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1 | /* this works around a bug in mingw32 providing a non-working setjmp */ |
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2 | #define USE_NO_MINGW_SETJMP_TWO_ARGS |
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3 | |
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4 | #define NDEBUG 1 |
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5 | |
1 | #include "libcoro/coro.c" |
6 | #include "libcoro/coro.c" |
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7 | |
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8 | #define PERL_NO_GET_CONTEXT |
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9 | #define PERL_EXT |
2 | |
10 | |
3 | #include "EXTERN.h" |
11 | #include "EXTERN.h" |
4 | #include "perl.h" |
12 | #include "perl.h" |
5 | #include "XSUB.h" |
13 | #include "XSUB.h" |
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14 | #include "perliol.h" |
6 | |
15 | |
7 | #include "patchlevel.h" |
16 | #include "schmorp.h" |
8 | |
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9 | #if USE_VALGRIND |
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10 | # include <valgrind/valgrind.h> |
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11 | #endif |
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12 | |
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13 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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14 | (PERL_REVISION > (a) \ |
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15 | || (PERL_REVISION == (a) \ |
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16 | && (PERL_VERSION > (b) \ |
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17 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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18 | |
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19 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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20 | # ifndef PL_ppaddr |
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21 | # define PL_ppaddr ppaddr |
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22 | # endif |
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23 | # ifndef call_sv |
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24 | # define call_sv perl_call_sv |
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25 | # endif |
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26 | # ifndef get_sv |
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27 | # define get_sv perl_get_sv |
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28 | # endif |
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29 | # ifndef get_cv |
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30 | # define get_cv perl_get_cv |
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31 | # endif |
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32 | # ifndef IS_PADGV |
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33 | # define IS_PADGV(v) 0 |
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34 | # endif |
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35 | # ifndef IS_PADCONST |
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36 | # define IS_PADCONST(v) 0 |
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37 | # endif |
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38 | #endif |
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39 | |
17 | |
40 | #include <stdio.h> |
18 | #include <stdio.h> |
41 | #include <errno.h> |
19 | #include <errno.h> |
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20 | #include <assert.h> |
42 | |
21 | |
43 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
22 | #ifndef SVs_PADSTALE |
44 | # undef STACKGUARD |
23 | # define SVs_PADSTALE 0 |
45 | #endif |
24 | #endif |
46 | |
25 | |
47 | #ifndef STACKGUARD |
26 | #if defined(_WIN32) |
48 | # define STACKGUARD 0 |
27 | # undef HAS_GETTIMEOFDAY |
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28 | # undef setjmp |
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29 | # undef longjmp |
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30 | # undef _exit |
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31 | # define setjmp _setjmp /* deep magic */ |
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32 | #else |
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33 | # include <inttypes.h> /* most portable stdint.h */ |
49 | #endif |
34 | #endif |
50 | |
35 | |
51 | #ifdef HAVE_MMAP |
36 | #ifdef HAVE_MMAP |
52 | # include <unistd.h> |
37 | # include <unistd.h> |
53 | # include <sys/mman.h> |
38 | # include <sys/mman.h> |
… | |
… | |
69 | #else |
54 | #else |
70 | # define PAGESIZE 0 |
55 | # define PAGESIZE 0 |
71 | # define BOOT_PAGESIZE (void)0 |
56 | # define BOOT_PAGESIZE (void)0 |
72 | #endif |
57 | #endif |
73 | |
58 | |
74 | /* The next macro should declare a variable stacklevel that contains and approximation |
59 | #if CORO_USE_VALGRIND |
75 | * to the current C stack pointer. Its property is that it changes with each call |
60 | # include <valgrind/valgrind.h> |
76 | * and should be unique. */ |
61 | #endif |
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62 | |
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63 | /* the maximum number of idle cctx that will be pooled */ |
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64 | static int cctx_max_idle = 4; |
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65 | |
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66 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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67 | # undef CORO_STACKGUARD |
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68 | #endif |
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69 | |
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70 | #ifndef CORO_STACKGUARD |
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71 | # define CORO_STACKGUARD 0 |
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72 | #endif |
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73 | |
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74 | /* prefer perl internal functions over our own? */ |
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75 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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76 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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77 | #endif |
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78 | |
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79 | /* The next macros try to return the current stack pointer, in an as |
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80 | * portable way as possible. */ |
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81 | #if __GNUC__ >= 4 |
77 | #define dSTACKLEVEL int stacklevel |
82 | # define dSTACKLEVEL int stacklevel_dummy |
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83 | # define STACKLEVEL __builtin_frame_address (0) |
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84 | #else |
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85 | # define dSTACKLEVEL volatile void *stacklevel |
78 | #define STACKLEVEL ((void *)&stacklevel) |
86 | # define STACKLEVEL ((void *)&stacklevel) |
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87 | #endif |
79 | |
88 | |
80 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
89 | #define IN_DESTRUCT PL_dirty |
81 | |
90 | |
82 | #if __GNUC__ >= 3 |
91 | #if __GNUC__ >= 3 |
83 | # define attribute(x) __attribute__(x) |
92 | # define attribute(x) __attribute__(x) |
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93 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
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94 | # define INLINE static inline |
84 | #else |
95 | #else |
85 | # define attribute(x) |
96 | # define attribute(x) |
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97 | # define expect(expr,value) (expr) |
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98 | # define INLINE static |
86 | #endif |
99 | #endif |
87 | |
100 | |
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101 | #define expect_false(expr) expect ((expr) != 0, 0) |
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102 | #define expect_true(expr) expect ((expr) != 0, 1) |
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103 | |
88 | #define NOINLINE attribute ((noinline)) |
104 | #define NOINLINE attribute ((noinline)) |
89 | |
105 | |
90 | #include "CoroAPI.h" |
106 | #include "CoroAPI.h" |
91 | |
107 | #define GCoroAPI (&coroapi) /* very sneaky */ |
92 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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93 | |
108 | |
94 | #ifdef USE_ITHREADS |
109 | #ifdef USE_ITHREADS |
95 | static perl_mutex coro_mutex; |
110 | # if CORO_PTHREAD |
96 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
111 | static void *coro_thx; |
97 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
112 | # endif |
98 | #else |
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99 | # define LOCK (void)0 |
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100 | # define UNLOCK (void)0 |
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101 | #endif |
113 | #endif |
102 | |
114 | |
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115 | #ifdef __linux |
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116 | # include <time.h> /* for timespec */ |
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117 | # include <syscall.h> /* for SYS_* */ |
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118 | # ifdef SYS_clock_gettime |
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119 | # define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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120 | # define CORO_CLOCK_MONOTONIC 1 |
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121 | # define CORO_CLOCK_THREAD_CPUTIME_ID 3 |
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122 | # endif |
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123 | #endif |
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124 | |
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125 | static double (*nvtime)(); /* so why doesn't it take void? */ |
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126 | static void (*u2time)(pTHX_ UV ret[2]); |
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127 | |
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128 | /* we hijack an hopefully unused CV flag for our purposes */ |
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129 | #define CVf_SLF 0x4000 |
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130 | static OP *pp_slf (pTHX); |
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131 | static void slf_destroy (pTHX_ struct coro *coro); |
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132 | |
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133 | static U32 cctx_gen; |
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134 | static size_t cctx_stacksize = CORO_STACKSIZE; |
103 | static struct CoroAPI coroapi; |
135 | static struct CoroAPI coroapi; |
104 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
136 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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137 | static JMPENV *main_top_env; |
105 | static HV *coro_state_stash, *coro_stash; |
138 | static HV *coro_state_stash, *coro_stash; |
106 | static SV *coro_mortal; /* will be freed after next transfer */ |
139 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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140 | |
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141 | static AV *av_destroy; /* destruction queue */ |
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142 | static SV *sv_manager; /* the manager coro */ |
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143 | static SV *sv_idle; /* $Coro::idle */ |
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144 | |
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145 | static GV *irsgv; /* $/ */ |
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146 | static GV *stdoutgv; /* *STDOUT */ |
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147 | static SV *rv_diehook; |
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148 | static SV *rv_warnhook; |
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149 | static HV *hv_sig; /* %SIG */ |
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150 | |
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151 | /* async_pool helper stuff */ |
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152 | static SV *sv_pool_rss; |
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153 | static SV *sv_pool_size; |
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154 | static SV *sv_async_pool_idle; /* description string */ |
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155 | static AV *av_async_pool; /* idle pool */ |
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156 | static SV *sv_Coro; /* class string */ |
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157 | static CV *cv_pool_handler; |
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158 | |
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159 | /* Coro::AnyEvent */ |
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160 | static SV *sv_activity; |
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161 | |
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162 | /* enable processtime/realtime profiling */ |
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163 | static char enable_times; |
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164 | typedef U32 coro_ts[2]; |
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165 | static coro_ts time_real, time_cpu; |
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166 | static char times_valid; |
107 | |
167 | |
108 | static struct coro_cctx *cctx_first; |
168 | static struct coro_cctx *cctx_first; |
109 | static int cctx_count, cctx_idle; |
169 | static int cctx_count, cctx_idle; |
110 | |
170 | |
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171 | enum { |
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172 | CC_MAPPED = 0x01, |
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173 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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174 | CC_TRACE = 0x04, |
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175 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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176 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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177 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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178 | }; |
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179 | |
111 | /* this is a structure representing a c-level coroutine */ |
180 | /* this is a structure representing a c-level coroutine */ |
112 | typedef struct coro_cctx { |
181 | typedef struct coro_cctx |
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182 | { |
113 | struct coro_cctx *next; |
183 | struct coro_cctx *next; |
114 | |
184 | |
115 | /* the stack */ |
185 | /* the stack */ |
116 | void *sptr; |
186 | void *sptr; |
117 | long ssize; /* positive == mmap, otherwise malloc */ |
187 | size_t ssize; |
118 | |
188 | |
119 | /* cpu state */ |
189 | /* cpu state */ |
120 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
190 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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191 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
121 | JMPENV *top_env; |
192 | JMPENV *top_env; |
122 | coro_context cctx; |
193 | coro_context cctx; |
123 | |
194 | |
124 | int inuse; |
195 | U32 gen; |
125 | |
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126 | #if USE_VALGRIND |
196 | #if CORO_USE_VALGRIND |
127 | int valgrind_id; |
197 | int valgrind_id; |
128 | #endif |
198 | #endif |
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199 | unsigned char flags; |
129 | } coro_cctx; |
200 | } coro_cctx; |
130 | |
201 | |
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202 | static coro_cctx *cctx_current; /* the currently running cctx */ |
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203 | |
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204 | /*****************************************************************************/ |
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205 | |
131 | enum { |
206 | enum { |
132 | CF_RUNNING, /* coroutine is running */ |
207 | CF_RUNNING = 0x0001, /* coroutine is running */ |
133 | CF_READY, /* coroutine is ready */ |
208 | CF_READY = 0x0002, /* coroutine is ready */ |
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209 | CF_NEW = 0x0004, /* has never been switched to */ |
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210 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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211 | CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ |
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212 | CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */ |
134 | }; |
213 | }; |
135 | |
214 | |
136 | /* this is a structure representing a perl-level coroutine */ |
215 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
137 | struct coro { |
216 | typedef struct |
138 | /* the c coroutine allocated to this perl coroutine, if any */ |
217 | { |
139 | coro_cctx *cctx; |
218 | SV *defsv; |
140 | |
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141 | /* data associated with this coroutine (initial args) */ |
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142 | AV *args; |
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143 | int refcnt; |
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144 | int flags; |
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145 | |
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146 | /* optionally saved, might be zero */ |
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147 | AV *defav; |
219 | AV *defav; |
148 | SV *defsv; |
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149 | SV *errsv; |
220 | SV *errsv; |
150 | |
221 | SV *irsgv; |
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222 | HV *hinthv; |
151 | #define VAR(name,type) type name; |
223 | #define VAR(name,type) type name; |
152 | # include "state.h" |
224 | # include "state.h" |
153 | #undef VAR |
225 | #undef VAR |
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226 | } perl_slots; |
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227 | |
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228 | // how many context stack entries do we need for perl_slots |
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229 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
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230 | |
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231 | /* this is a structure representing a perl-level coroutine */ |
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232 | struct coro { |
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233 | /* the C coroutine allocated to this perl coroutine, if any */ |
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234 | coro_cctx *cctx; |
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235 | |
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236 | /* ready queue */ |
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237 | struct coro *next_ready; |
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238 | |
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239 | /* state data */ |
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240 | struct CoroSLF slf_frame; /* saved slf frame */ |
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241 | AV *mainstack; |
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242 | perl_slots *slot; /* basically the saved sp */ |
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243 | |
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244 | CV *startcv; /* the CV to execute */ |
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245 | AV *args; /* data associated with this coroutine (initial args) */ |
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246 | int refcnt; /* coroutines are refcounted, yes */ |
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247 | int flags; /* CF_ flags */ |
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248 | HV *hv; /* the perl hash associated with this coro, if any */ |
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249 | |
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250 | /* statistics */ |
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251 | int usecount; /* number of transfers to this coro */ |
154 | |
252 | |
155 | /* coro process data */ |
253 | /* coro process data */ |
156 | int prio; |
254 | int prio; |
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255 | SV *except; /* exception to be thrown */ |
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256 | SV *rouse_cb; |
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257 | |
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258 | /* async_pool */ |
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259 | SV *saved_deffh; |
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260 | SV *invoke_cb; |
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261 | AV *invoke_av; |
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262 | |
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263 | /* on_enter/on_leave */ |
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264 | AV *on_enter; |
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265 | AV *on_leave; |
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266 | |
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267 | /* swap_sv */ |
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268 | AV *swap_sv; |
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269 | |
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270 | /* times */ |
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271 | coro_ts t_cpu, t_real; |
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272 | |
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273 | /* linked list */ |
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274 | struct coro *next, *prev; |
157 | }; |
275 | }; |
158 | |
276 | |
159 | typedef struct coro *Coro__State; |
277 | typedef struct coro *Coro__State; |
160 | typedef struct coro *Coro__State_or_hashref; |
278 | typedef struct coro *Coro__State_or_hashref; |
161 | |
279 | |
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280 | /* the following variables are effectively part of the perl context */ |
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281 | /* and get copied between struct coro and these variables */ |
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282 | /* the main reason we don't support windows process emulation */ |
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283 | static struct CoroSLF slf_frame; /* the current slf frame */ |
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284 | |
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285 | /** Coro ********************************************************************/ |
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286 | |
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287 | #define CORO_PRIO_MAX 3 |
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288 | #define CORO_PRIO_HIGH 1 |
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289 | #define CORO_PRIO_NORMAL 0 |
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290 | #define CORO_PRIO_LOW -1 |
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291 | #define CORO_PRIO_IDLE -3 |
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292 | #define CORO_PRIO_MIN -4 |
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293 | |
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294 | /* for Coro.pm */ |
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295 | static SV *coro_current; |
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296 | static SV *coro_readyhook; |
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297 | static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ |
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298 | static CV *cv_coro_run; |
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299 | static struct coro *coro_first; |
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300 | #define coro_nready coroapi.nready |
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301 | |
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302 | /** Coro::Select ************************************************************/ |
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303 | |
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304 | static OP *(*coro_old_pp_sselect) (pTHX); |
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305 | static SV *coro_select_select; |
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306 | |
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307 | /* horrible hack, but if it works... */ |
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308 | static OP * |
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309 | coro_pp_sselect (pTHX) |
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310 | { |
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311 | dSP; |
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312 | PUSHMARK (SP - 4); /* fake argument list */ |
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313 | XPUSHs (coro_select_select); |
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314 | PUTBACK; |
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315 | |
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316 | /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */ |
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317 | PL_op->op_flags |= OPf_STACKED; |
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318 | PL_op->op_private = 0; |
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319 | return PL_ppaddr [OP_ENTERSUB](aTHX); |
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320 | } |
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321 | |
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322 | /** time stuff **************************************************************/ |
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323 | |
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324 | #ifdef HAS_GETTIMEOFDAY |
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325 | |
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326 | static void |
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327 | coro_u2time (pTHX_ UV ret[2]) |
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328 | { |
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329 | struct timeval tv; |
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330 | gettimeofday (&tv, 0); |
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331 | |
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332 | ret [0] = tv.tv_sec; |
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333 | ret [1] = tv.tv_usec; |
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334 | } |
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335 | |
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336 | static double |
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337 | coro_nvtime () |
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338 | { |
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339 | struct timeval tv; |
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340 | gettimeofday (&tv, 0); |
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341 | |
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342 | return tv.tv_sec + tv.tv_usec * 1e-6; |
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343 | } |
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344 | |
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345 | static void |
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346 | time_init (pTHX) |
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347 | { |
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348 | nvtime = coro_nvtime; |
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349 | u2time = coro_u2time; |
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350 | } |
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351 | |
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352 | #else |
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353 | |
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354 | static void |
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355 | time_init (pTHX) |
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356 | { |
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357 | SV **svp; |
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358 | |
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359 | require_pv ("Time/HiRes.pm"); |
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360 | |
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361 | svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
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362 | |
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363 | if (!svp) croak ("Time::HiRes is required, but missing. Caught"); |
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364 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught"); |
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365 | |
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366 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
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367 | |
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368 | svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0); |
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369 | u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp)); |
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370 | } |
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371 | |
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372 | #endif |
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373 | |
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374 | /** lowlevel stuff **********************************************************/ |
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375 | |
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376 | static SV * |
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377 | coro_get_sv (pTHX_ const char *name, int create) |
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378 | { |
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379 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
380 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
381 | get_sv (name, create); |
|
|
382 | #endif |
|
|
383 | return get_sv (name, create); |
|
|
384 | } |
|
|
385 | |
162 | static AV * |
386 | static AV * |
|
|
387 | coro_get_av (pTHX_ const char *name, int create) |
|
|
388 | { |
|
|
389 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
390 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
391 | get_av (name, create); |
|
|
392 | #endif |
|
|
393 | return get_av (name, create); |
|
|
394 | } |
|
|
395 | |
|
|
396 | static HV * |
|
|
397 | coro_get_hv (pTHX_ const char *name, int create) |
|
|
398 | { |
|
|
399 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
400 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
401 | get_hv (name, create); |
|
|
402 | #endif |
|
|
403 | return get_hv (name, create); |
|
|
404 | } |
|
|
405 | |
|
|
406 | INLINE void |
|
|
407 | coro_times_update () |
|
|
408 | { |
|
|
409 | #ifdef coro_clock_gettime |
|
|
410 | struct timespec ts; |
|
|
411 | |
|
|
412 | ts.tv_sec = ts.tv_nsec = 0; |
|
|
413 | coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts); |
|
|
414 | time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec; |
|
|
415 | |
|
|
416 | ts.tv_sec = ts.tv_nsec = 0; |
|
|
417 | coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts); |
|
|
418 | time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec; |
|
|
419 | #else |
|
|
420 | dTHX; |
|
|
421 | UV tv[2]; |
|
|
422 | |
|
|
423 | u2time (aTHX_ tv); |
|
|
424 | time_real [0] = tv [0]; |
|
|
425 | time_real [1] = tv [1] * 1000; |
|
|
426 | #endif |
|
|
427 | } |
|
|
428 | |
|
|
429 | INLINE void |
|
|
430 | coro_times_add (struct coro *c) |
|
|
431 | { |
|
|
432 | c->t_real [1] += time_real [1]; |
|
|
433 | if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } |
|
|
434 | c->t_real [0] += time_real [0]; |
|
|
435 | |
|
|
436 | c->t_cpu [1] += time_cpu [1]; |
|
|
437 | if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } |
|
|
438 | c->t_cpu [0] += time_cpu [0]; |
|
|
439 | } |
|
|
440 | |
|
|
441 | INLINE void |
|
|
442 | coro_times_sub (struct coro *c) |
|
|
443 | { |
|
|
444 | if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } |
|
|
445 | c->t_real [1] -= time_real [1]; |
|
|
446 | c->t_real [0] -= time_real [0]; |
|
|
447 | |
|
|
448 | if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; } |
|
|
449 | c->t_cpu [1] -= time_cpu [1]; |
|
|
450 | c->t_cpu [0] -= time_cpu [0]; |
|
|
451 | } |
|
|
452 | |
|
|
453 | /*****************************************************************************/ |
|
|
454 | /* magic glue */ |
|
|
455 | |
|
|
456 | #define CORO_MAGIC_type_cv 26 |
|
|
457 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
|
|
458 | |
|
|
459 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
460 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
461 | ? SvMAGIC (sv) \ |
|
|
462 | : mg_find (sv, type)) |
|
|
463 | |
|
|
464 | #define CORO_MAGIC(sv, type) \ |
|
|
465 | (expect_true (SvMAGIC (sv)) \ |
|
|
466 | ? CORO_MAGIC_NN (sv, type) \ |
|
|
467 | : 0) |
|
|
468 | |
|
|
469 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
470 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
471 | |
|
|
472 | INLINE struct coro * |
|
|
473 | SvSTATE_ (pTHX_ SV *coro) |
|
|
474 | { |
|
|
475 | HV *stash; |
|
|
476 | MAGIC *mg; |
|
|
477 | |
|
|
478 | if (SvROK (coro)) |
|
|
479 | coro = SvRV (coro); |
|
|
480 | |
|
|
481 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
482 | croak ("Coro::State object required"); |
|
|
483 | |
|
|
484 | stash = SvSTASH (coro); |
|
|
485 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
486 | { |
|
|
487 | /* very slow, but rare, check */ |
|
|
488 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
489 | croak ("Coro::State object required"); |
|
|
490 | } |
|
|
491 | |
|
|
492 | mg = CORO_MAGIC_state (coro); |
|
|
493 | return (struct coro *)mg->mg_ptr; |
|
|
494 | } |
|
|
495 | |
|
|
496 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
497 | |
|
|
498 | /* faster than SvSTATE, but expects a coroutine hv */ |
|
|
499 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
|
|
500 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
|
|
501 | |
|
|
502 | /*****************************************************************************/ |
|
|
503 | /* padlist management and caching */ |
|
|
504 | |
|
|
505 | static AV * |
163 | coro_clone_padlist (CV *cv) |
506 | coro_derive_padlist (pTHX_ CV *cv) |
164 | { |
507 | { |
165 | AV *padlist = CvPADLIST (cv); |
508 | AV *padlist = CvPADLIST (cv); |
166 | AV *newpadlist, *newpad; |
509 | AV *newpadlist, *newpad; |
167 | |
510 | |
168 | newpadlist = newAV (); |
511 | newpadlist = newAV (); |
169 | AvREAL_off (newpadlist); |
512 | AvREAL_off (newpadlist); |
170 | #if PERL_VERSION_ATLEAST (5,9,0) |
513 | #if PERL_VERSION_ATLEAST (5,10,0) |
171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
514 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
172 | #else |
515 | #else |
173 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
516 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
174 | #endif |
517 | #endif |
175 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
518 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
176 | --AvFILLp (padlist); |
519 | --AvFILLp (padlist); |
177 | |
520 | |
178 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
521 | av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); |
179 | av_store (newpadlist, 1, (SV *)newpad); |
522 | av_store (newpadlist, 1, (SV *)newpad); |
180 | |
523 | |
181 | return newpadlist; |
524 | return newpadlist; |
182 | } |
525 | } |
183 | |
526 | |
184 | static void |
527 | static void |
185 | free_padlist (AV *padlist) |
528 | free_padlist (pTHX_ AV *padlist) |
186 | { |
529 | { |
187 | /* may be during global destruction */ |
530 | /* may be during global destruction */ |
188 | if (SvREFCNT (padlist)) |
531 | if (!IN_DESTRUCT) |
189 | { |
532 | { |
190 | I32 i = AvFILLp (padlist); |
533 | I32 i = AvFILLp (padlist); |
191 | while (i >= 0) |
534 | |
|
|
535 | while (i > 0) /* special-case index 0 */ |
192 | { |
536 | { |
193 | SV **svp = av_fetch (padlist, i--, FALSE); |
537 | /* we try to be extra-careful here */ |
194 | if (svp) |
538 | AV *av = (AV *)AvARRAY (padlist)[i--]; |
195 | { |
539 | I32 j = AvFILLp (av); |
196 | SV *sv; |
540 | |
197 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
541 | while (j >= 0) |
|
|
542 | SvREFCNT_dec (AvARRAY (av)[j--]); |
|
|
543 | |
|
|
544 | AvFILLp (av) = -1; |
198 | SvREFCNT_dec (sv); |
545 | SvREFCNT_dec (av); |
199 | |
|
|
200 | SvREFCNT_dec (*svp); |
|
|
201 | } |
|
|
202 | } |
546 | } |
203 | |
547 | |
|
|
548 | SvREFCNT_dec (AvARRAY (padlist)[0]); |
|
|
549 | |
|
|
550 | AvFILLp (padlist) = -1; |
204 | SvREFCNT_dec ((SV*)padlist); |
551 | SvREFCNT_dec ((SV*)padlist); |
205 | } |
552 | } |
206 | } |
553 | } |
207 | |
554 | |
208 | static int |
555 | static int |
209 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
556 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
210 | { |
557 | { |
211 | AV *padlist; |
558 | AV *padlist; |
212 | AV *av = (AV *)mg->mg_obj; |
559 | AV *av = (AV *)mg->mg_obj; |
213 | |
560 | |
|
|
561 | /* perl manages to free our internal AV and _then_ call us */ |
|
|
562 | if (IN_DESTRUCT) |
|
|
563 | return 0; |
|
|
564 | |
214 | /* casting is fun. */ |
565 | /* casting is fun. */ |
215 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
566 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
216 | free_padlist (padlist); |
567 | free_padlist (aTHX_ padlist); |
217 | |
568 | |
218 | SvREFCNT_dec (av); |
569 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
219 | |
570 | |
220 | return 0; |
571 | return 0; |
221 | } |
572 | } |
222 | |
573 | |
223 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
574 | static MGVTBL coro_cv_vtbl = { |
224 | |
575 | 0, 0, 0, 0, |
225 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
576 | coro_cv_free |
226 | |
577 | }; |
227 | #define CORO_MAGIC(cv) \ |
|
|
228 | SvMAGIC (cv) \ |
|
|
229 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
|
|
230 | ? SvMAGIC (cv) \ |
|
|
231 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
|
|
232 | : 0 |
|
|
233 | |
578 | |
234 | /* the next two functions merely cache the padlists */ |
579 | /* the next two functions merely cache the padlists */ |
235 | static void |
580 | static void |
236 | get_padlist (CV *cv) |
581 | get_padlist (pTHX_ CV *cv) |
237 | { |
582 | { |
238 | MAGIC *mg = CORO_MAGIC (cv); |
583 | MAGIC *mg = CORO_MAGIC_cv (cv); |
239 | AV *av; |
584 | AV *av; |
240 | |
585 | |
241 | if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0) |
586 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
242 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
587 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
243 | else |
588 | else |
244 | { |
589 | { |
245 | #if 0 |
590 | #if CORO_PREFER_PERL_FUNCTIONS |
246 | /* this is probably cleaner, but also slower? */ |
591 | /* this is probably cleaner? but also slower! */ |
|
|
592 | /* in practise, it seems to be less stable */ |
247 | CV *cp = Perl_cv_clone (cv); |
593 | CV *cp = Perl_cv_clone (aTHX_ cv); |
248 | CvPADLIST (cv) = CvPADLIST (cp); |
594 | CvPADLIST (cv) = CvPADLIST (cp); |
249 | CvPADLIST (cp) = 0; |
595 | CvPADLIST (cp) = 0; |
250 | SvREFCNT_dec (cp); |
596 | SvREFCNT_dec (cp); |
251 | #else |
597 | #else |
252 | CvPADLIST (cv) = coro_clone_padlist (cv); |
598 | CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); |
253 | #endif |
599 | #endif |
254 | } |
600 | } |
255 | } |
601 | } |
256 | |
602 | |
257 | static void |
603 | static void |
258 | put_padlist (CV *cv) |
604 | put_padlist (pTHX_ CV *cv) |
259 | { |
605 | { |
260 | MAGIC *mg = CORO_MAGIC (cv); |
606 | MAGIC *mg = CORO_MAGIC_cv (cv); |
261 | AV *av; |
607 | AV *av; |
262 | |
608 | |
263 | if (!mg) |
609 | if (expect_false (!mg)) |
264 | { |
610 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
265 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
|
|
266 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
267 | mg->mg_virtual = &vtbl_coro; |
|
|
268 | mg->mg_obj = (SV *)newAV (); |
|
|
269 | } |
|
|
270 | |
611 | |
271 | av = (AV *)mg->mg_obj; |
612 | av = (AV *)mg->mg_obj; |
272 | |
613 | |
273 | if (AvFILLp (av) >= AvMAX (av)) |
614 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
274 | av_extend (av, AvMAX (av) + 1); |
615 | av_extend (av, AvFILLp (av) + 1); |
275 | |
616 | |
276 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
617 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
277 | } |
618 | } |
278 | |
619 | |
279 | #define SB do { |
620 | /** load & save, init *******************************************************/ |
280 | #define SE } while (0) |
|
|
281 | |
621 | |
282 | #define LOAD(state) load_state((state)); |
622 | /* swap sv heads, at least logically */ |
283 | #define SAVE(state,flags) save_state((state),(flags)); |
|
|
284 | |
|
|
285 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
|
|
286 | |
|
|
287 | static void |
623 | static void |
|
|
624 | swap_svs (pTHX_ Coro__State c) |
|
|
625 | { |
|
|
626 | int i; |
|
|
627 | |
|
|
628 | for (i = 0; i <= AvFILLp (c->swap_sv); ) |
|
|
629 | { |
|
|
630 | SV *a = AvARRAY (c->swap_sv)[i++]; |
|
|
631 | SV *b = AvARRAY (c->swap_sv)[i++]; |
|
|
632 | |
|
|
633 | const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */ |
|
|
634 | SV tmp; |
|
|
635 | |
|
|
636 | /* swap sv_any */ |
|
|
637 | SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp); |
|
|
638 | |
|
|
639 | /* swap sv_flags */ |
|
|
640 | SvFLAGS (&tmp) = SvFLAGS (a); |
|
|
641 | SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep); |
|
|
642 | SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep); |
|
|
643 | |
|
|
644 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
645 | /* perl 5.10 complicates this _quite_ a bit, but it also is |
|
|
646 | * much faster, so no quarrels here. alternatively, we could |
|
|
647 | * sv_upgrade to avoid this. |
|
|
648 | */ |
|
|
649 | { |
|
|
650 | /* swap sv_u */ |
|
|
651 | tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u; |
|
|
652 | |
|
|
653 | /* if SvANY points to the head, we need to adjust the pointers, |
|
|
654 | * as the pointer for a still points to b, and maybe vice versa. |
|
|
655 | */ |
|
|
656 | #define svany_in_head(type) \ |
|
|
657 | (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type))) |
|
|
658 | |
|
|
659 | if (svany_in_head (SvTYPE (a))) |
|
|
660 | SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a); |
|
|
661 | |
|
|
662 | if (svany_in_head (SvTYPE (b))) |
|
|
663 | SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b); |
|
|
664 | } |
|
|
665 | #endif |
|
|
666 | } |
|
|
667 | } |
|
|
668 | |
|
|
669 | #define SWAP_SVS(coro) \ |
|
|
670 | if (expect_false ((coro)->swap_sv)) \ |
|
|
671 | swap_svs (aTHX_ (coro)) |
|
|
672 | |
|
|
673 | static void |
|
|
674 | on_enterleave_call (pTHX_ SV *cb); |
|
|
675 | |
|
|
676 | static void |
288 | load_state(Coro__State c) |
677 | load_perl (pTHX_ Coro__State c) |
289 | { |
678 | { |
|
|
679 | perl_slots *slot = c->slot; |
|
|
680 | c->slot = 0; |
|
|
681 | |
|
|
682 | PL_mainstack = c->mainstack; |
|
|
683 | |
|
|
684 | GvSV (PL_defgv) = slot->defsv; |
|
|
685 | GvAV (PL_defgv) = slot->defav; |
|
|
686 | GvSV (PL_errgv) = slot->errsv; |
|
|
687 | GvSV (irsgv) = slot->irsgv; |
|
|
688 | GvHV (PL_hintgv) = slot->hinthv; |
|
|
689 | |
290 | #define VAR(name,type) PL_ ## name = c->name; |
690 | #define VAR(name,type) PL_ ## name = slot->name; |
291 | # include "state.h" |
691 | # include "state.h" |
292 | #undef VAR |
692 | #undef VAR |
293 | |
|
|
294 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
|
|
295 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
|
|
296 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
|
|
297 | |
693 | |
298 | { |
694 | { |
299 | dSP; |
695 | dSP; |
|
|
696 | |
300 | CV *cv; |
697 | CV *cv; |
301 | |
698 | |
302 | /* now do the ugly restore mess */ |
699 | /* now do the ugly restore mess */ |
303 | while ((cv = (CV *)POPs)) |
700 | while (expect_true (cv = (CV *)POPs)) |
304 | { |
701 | { |
305 | put_padlist (cv); /* mark this padlist as available */ |
702 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
306 | CvDEPTH (cv) = PTR2IV (POPs); |
703 | CvDEPTH (cv) = PTR2IV (POPs); |
307 | CvPADLIST (cv) = (AV *)POPs; |
704 | CvPADLIST (cv) = (AV *)POPs; |
308 | } |
705 | } |
309 | |
706 | |
310 | PUTBACK; |
707 | PUTBACK; |
311 | } |
708 | } |
312 | } |
|
|
313 | |
709 | |
|
|
710 | slf_frame = c->slf_frame; |
|
|
711 | CORO_THROW = c->except; |
|
|
712 | |
|
|
713 | if (expect_false (enable_times)) |
|
|
714 | { |
|
|
715 | if (expect_false (!times_valid)) |
|
|
716 | coro_times_update (); |
|
|
717 | |
|
|
718 | coro_times_sub (c); |
|
|
719 | } |
|
|
720 | |
|
|
721 | if (expect_false (c->on_enter)) |
|
|
722 | { |
|
|
723 | int i; |
|
|
724 | |
|
|
725 | for (i = 0; i <= AvFILLp (c->on_enter); ++i) |
|
|
726 | on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); |
|
|
727 | } |
|
|
728 | |
|
|
729 | SWAP_SVS (c); |
|
|
730 | } |
|
|
731 | |
314 | static void |
732 | static void |
315 | save_state(Coro__State c, int flags) |
733 | save_perl (pTHX_ Coro__State c) |
316 | { |
734 | { |
|
|
735 | SWAP_SVS (c); |
|
|
736 | |
|
|
737 | if (expect_false (c->on_leave)) |
|
|
738 | { |
|
|
739 | int i; |
|
|
740 | |
|
|
741 | for (i = AvFILLp (c->on_leave); i >= 0; --i) |
|
|
742 | on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); |
|
|
743 | } |
|
|
744 | |
|
|
745 | times_valid = 0; |
|
|
746 | |
|
|
747 | if (expect_false (enable_times)) |
|
|
748 | { |
|
|
749 | coro_times_update (); times_valid = 1; |
|
|
750 | coro_times_add (c); |
|
|
751 | } |
|
|
752 | |
|
|
753 | c->except = CORO_THROW; |
|
|
754 | c->slf_frame = slf_frame; |
|
|
755 | |
317 | { |
756 | { |
318 | dSP; |
757 | dSP; |
319 | I32 cxix = cxstack_ix; |
758 | I32 cxix = cxstack_ix; |
320 | PERL_CONTEXT *ccstk = cxstack; |
759 | PERL_CONTEXT *ccstk = cxstack; |
321 | PERL_SI *top_si = PL_curstackinfo; |
760 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
323 | /* |
762 | /* |
324 | * the worst thing you can imagine happens first - we have to save |
763 | * the worst thing you can imagine happens first - we have to save |
325 | * (and reinitialize) all cv's in the whole callchain :( |
764 | * (and reinitialize) all cv's in the whole callchain :( |
326 | */ |
765 | */ |
327 | |
766 | |
328 | PUSHs (Nullsv); |
767 | XPUSHs (Nullsv); |
329 | /* this loop was inspired by pp_caller */ |
768 | /* this loop was inspired by pp_caller */ |
330 | for (;;) |
769 | for (;;) |
331 | { |
770 | { |
332 | while (cxix >= 0) |
771 | while (expect_true (cxix >= 0)) |
333 | { |
772 | { |
334 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
773 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
335 | |
774 | |
336 | if (CxTYPE(cx) == CXt_SUB) |
775 | if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) |
337 | { |
776 | { |
338 | CV *cv = cx->blk_sub.cv; |
777 | CV *cv = cx->blk_sub.cv; |
339 | |
778 | |
340 | if (CvDEPTH (cv)) |
779 | if (expect_true (CvDEPTH (cv))) |
341 | { |
780 | { |
342 | EXTEND (SP, 3); |
781 | EXTEND (SP, 3); |
343 | |
|
|
344 | PUSHs ((SV *)CvPADLIST(cv)); |
782 | PUSHs ((SV *)CvPADLIST (cv)); |
345 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
783 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
346 | PUSHs ((SV *)cv); |
784 | PUSHs ((SV *)cv); |
347 | |
785 | |
348 | CvDEPTH (cv) = 0; |
786 | CvDEPTH (cv) = 0; |
349 | get_padlist (cv); |
787 | get_padlist (aTHX_ cv); |
350 | } |
788 | } |
351 | } |
789 | } |
352 | #ifdef CXt_FORMAT |
|
|
353 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
354 | { |
|
|
355 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
356 | /* my bold guess is as a simple, plain sub... */ |
|
|
357 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
358 | } |
|
|
359 | #endif |
|
|
360 | } |
790 | } |
361 | |
791 | |
362 | if (top_si->si_type == PERLSI_MAIN) |
792 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
363 | break; |
793 | break; |
364 | |
794 | |
365 | top_si = top_si->si_prev; |
795 | top_si = top_si->si_prev; |
366 | ccstk = top_si->si_cxstack; |
796 | ccstk = top_si->si_cxstack; |
367 | cxix = top_si->si_cxix; |
797 | cxix = top_si->si_cxix; |
368 | } |
798 | } |
369 | |
799 | |
370 | PUTBACK; |
800 | PUTBACK; |
371 | } |
801 | } |
372 | |
802 | |
373 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
803 | /* allocate some space on the context stack for our purposes */ |
374 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
804 | if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max)) |
375 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
805 | { |
|
|
806 | unsigned int i; |
376 | |
807 | |
|
|
808 | for (i = 0; i < SLOT_COUNT; ++i) |
|
|
809 | CXINC; |
|
|
810 | |
|
|
811 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
|
|
812 | } |
|
|
813 | |
|
|
814 | c->mainstack = PL_mainstack; |
|
|
815 | |
|
|
816 | { |
|
|
817 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
|
|
818 | |
|
|
819 | slot->defav = GvAV (PL_defgv); |
|
|
820 | slot->defsv = DEFSV; |
|
|
821 | slot->errsv = ERRSV; |
|
|
822 | slot->irsgv = GvSV (irsgv); |
|
|
823 | slot->hinthv = GvHV (PL_hintgv); |
|
|
824 | |
377 | #define VAR(name,type)c->name = PL_ ## name; |
825 | #define VAR(name,type) slot->name = PL_ ## name; |
378 | # include "state.h" |
826 | # include "state.h" |
379 | #undef VAR |
827 | #undef VAR |
|
|
828 | } |
380 | } |
829 | } |
381 | |
830 | |
382 | /* |
831 | /* |
383 | * allocate various perl stacks. This is an exact copy |
832 | * allocate various perl stacks. This is almost an exact copy |
384 | * of perl.c:init_stacks, except that it uses less memory |
833 | * of perl.c:init_stacks, except that it uses less memory |
385 | * on the (sometimes correct) assumption that coroutines do |
834 | * on the (sometimes correct) assumption that coroutines do |
386 | * not usually need a lot of stackspace. |
835 | * not usually need a lot of stackspace. |
387 | */ |
836 | */ |
|
|
837 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
838 | # define coro_init_stacks(thx) init_stacks () |
|
|
839 | #else |
388 | static void |
840 | static void |
389 | coro_init_stacks () |
841 | coro_init_stacks (pTHX) |
390 | { |
842 | { |
391 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
843 | PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */ |
392 | PL_curstackinfo->si_type = PERLSI_MAIN; |
844 | PL_curstackinfo->si_type = PERLSI_MAIN; |
393 | PL_curstack = PL_curstackinfo->si_stack; |
845 | PL_curstack = PL_curstackinfo->si_stack; |
394 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
846 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
395 | |
847 | |
396 | PL_stack_base = AvARRAY(PL_curstack); |
848 | PL_stack_base = AvARRAY(PL_curstack); |
397 | PL_stack_sp = PL_stack_base; |
849 | PL_stack_sp = PL_stack_base; |
398 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
850 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
399 | |
851 | |
400 | New(50,PL_tmps_stack,96,SV*); |
852 | New(50,PL_tmps_stack,32,SV*); |
401 | PL_tmps_floor = -1; |
853 | PL_tmps_floor = -1; |
402 | PL_tmps_ix = -1; |
854 | PL_tmps_ix = -1; |
403 | PL_tmps_max = 96; |
855 | PL_tmps_max = 32; |
404 | |
856 | |
405 | New(54,PL_markstack,16,I32); |
857 | New(54,PL_markstack,16,I32); |
406 | PL_markstack_ptr = PL_markstack; |
858 | PL_markstack_ptr = PL_markstack; |
407 | PL_markstack_max = PL_markstack + 16; |
859 | PL_markstack_max = PL_markstack + 16; |
408 | |
860 | |
409 | #ifdef SET_MARK_OFFSET |
861 | #ifdef SET_MARK_OFFSET |
410 | SET_MARK_OFFSET; |
862 | SET_MARK_OFFSET; |
411 | #endif |
863 | #endif |
412 | |
864 | |
413 | New(54,PL_scopestack,16,I32); |
865 | New(54,PL_scopestack,8,I32); |
414 | PL_scopestack_ix = 0; |
866 | PL_scopestack_ix = 0; |
415 | PL_scopestack_max = 16; |
867 | PL_scopestack_max = 8; |
416 | |
868 | |
417 | New(54,PL_savestack,96,ANY); |
869 | New(54,PL_savestack,24,ANY); |
418 | PL_savestack_ix = 0; |
870 | PL_savestack_ix = 0; |
419 | PL_savestack_max = 96; |
871 | PL_savestack_max = 24; |
420 | |
872 | |
421 | #if !PERL_VERSION_ATLEAST (5,9,0) |
873 | #if !PERL_VERSION_ATLEAST (5,10,0) |
422 | New(54,PL_retstack,8,OP*); |
874 | New(54,PL_retstack,4,OP*); |
423 | PL_retstack_ix = 0; |
875 | PL_retstack_ix = 0; |
424 | PL_retstack_max = 8; |
876 | PL_retstack_max = 4; |
425 | #endif |
877 | #endif |
426 | } |
878 | } |
|
|
879 | #endif |
427 | |
880 | |
428 | /* |
881 | /* |
429 | * destroy the stacks, the callchain etc... |
882 | * destroy the stacks, the callchain etc... |
430 | */ |
883 | */ |
431 | static void |
884 | static void |
432 | coro_destroy_stacks () |
885 | coro_destruct_stacks (pTHX) |
433 | { |
886 | { |
434 | if (!IN_DESTRUCT) |
|
|
435 | { |
|
|
436 | /* is this ugly, I ask? */ |
|
|
437 | LEAVE_SCOPE (0); |
|
|
438 | |
|
|
439 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
440 | FREETMPS; |
|
|
441 | |
|
|
442 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
443 | } |
|
|
444 | |
|
|
445 | while (PL_curstackinfo->si_next) |
887 | while (PL_curstackinfo->si_next) |
446 | PL_curstackinfo = PL_curstackinfo->si_next; |
888 | PL_curstackinfo = PL_curstackinfo->si_next; |
447 | |
889 | |
448 | while (PL_curstackinfo) |
890 | while (PL_curstackinfo) |
449 | { |
891 | { |
450 | PERL_SI *p = PL_curstackinfo->si_prev; |
892 | PERL_SI *p = PL_curstackinfo->si_prev; |
451 | |
893 | |
452 | { /*D*//*remove*/ |
|
|
453 | dSP; |
|
|
454 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
455 | PUTBACK; /* possibly superfluous */ |
|
|
456 | } |
|
|
457 | |
|
|
458 | if (!IN_DESTRUCT) |
894 | if (!IN_DESTRUCT) |
459 | { |
|
|
460 | dounwind (-1);/*D*//*remove*/ |
|
|
461 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
895 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
462 | } |
|
|
463 | |
896 | |
464 | Safefree (PL_curstackinfo->si_cxstack); |
897 | Safefree (PL_curstackinfo->si_cxstack); |
465 | Safefree (PL_curstackinfo); |
898 | Safefree (PL_curstackinfo); |
466 | PL_curstackinfo = p; |
899 | PL_curstackinfo = p; |
467 | } |
900 | } |
468 | |
901 | |
469 | Safefree (PL_tmps_stack); |
902 | Safefree (PL_tmps_stack); |
470 | Safefree (PL_markstack); |
903 | Safefree (PL_markstack); |
471 | Safefree (PL_scopestack); |
904 | Safefree (PL_scopestack); |
472 | Safefree (PL_savestack); |
905 | Safefree (PL_savestack); |
473 | #if !PERL_VERSION_ATLEAST (5,9,0) |
906 | #if !PERL_VERSION_ATLEAST (5,10,0) |
474 | Safefree (PL_retstack); |
907 | Safefree (PL_retstack); |
475 | #endif |
908 | #endif |
476 | } |
909 | } |
477 | |
910 | |
|
|
911 | #define CORO_RSS \ |
|
|
912 | rss += sizeof (SYM (curstackinfo)); \ |
|
|
913 | rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
|
|
914 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
|
|
915 | rss += SYM (tmps_max) * sizeof (SV *); \ |
|
|
916 | rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
|
|
917 | rss += SYM (scopestack_max) * sizeof (I32); \ |
|
|
918 | rss += SYM (savestack_max) * sizeof (ANY); |
|
|
919 | |
|
|
920 | static size_t |
|
|
921 | coro_rss (pTHX_ struct coro *coro) |
|
|
922 | { |
|
|
923 | size_t rss = sizeof (*coro); |
|
|
924 | |
|
|
925 | if (coro->mainstack) |
|
|
926 | { |
|
|
927 | if (coro->flags & CF_RUNNING) |
|
|
928 | { |
|
|
929 | #define SYM(sym) PL_ ## sym |
|
|
930 | CORO_RSS; |
|
|
931 | #undef SYM |
|
|
932 | } |
|
|
933 | else |
|
|
934 | { |
|
|
935 | #define SYM(sym) coro->slot->sym |
|
|
936 | CORO_RSS; |
|
|
937 | #undef SYM |
|
|
938 | } |
|
|
939 | } |
|
|
940 | |
|
|
941 | return rss; |
|
|
942 | } |
|
|
943 | |
|
|
944 | /** coroutine stack handling ************************************************/ |
|
|
945 | |
|
|
946 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
947 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
948 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
949 | |
|
|
950 | /* apparently < 5.8.8 */ |
|
|
951 | #ifndef MgPV_nolen_const |
|
|
952 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
953 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
954 | (const char*)(mg)->mg_ptr) |
|
|
955 | #endif |
|
|
956 | |
|
|
957 | /* |
|
|
958 | * This overrides the default magic get method of %SIG elements. |
|
|
959 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
960 | * and instead of trying to save and restore the hash elements, we just provide |
|
|
961 | * readback here. |
|
|
962 | */ |
478 | static void |
963 | static int |
479 | setup_coro (struct coro *coro) |
964 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
965 | { |
|
|
966 | const char *s = MgPV_nolen_const (mg); |
|
|
967 | |
|
|
968 | if (*s == '_') |
|
|
969 | { |
|
|
970 | SV **svp = 0; |
|
|
971 | |
|
|
972 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
973 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
974 | |
|
|
975 | if (svp) |
|
|
976 | { |
|
|
977 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
978 | return 0; |
|
|
979 | } |
|
|
980 | } |
|
|
981 | |
|
|
982 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
983 | } |
|
|
984 | |
|
|
985 | static int |
|
|
986 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
987 | { |
|
|
988 | const char *s = MgPV_nolen_const (mg); |
|
|
989 | |
|
|
990 | if (*s == '_') |
|
|
991 | { |
|
|
992 | SV **svp = 0; |
|
|
993 | |
|
|
994 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
995 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
996 | |
|
|
997 | if (svp) |
|
|
998 | { |
|
|
999 | SV *old = *svp; |
|
|
1000 | *svp = 0; |
|
|
1001 | SvREFCNT_dec (old); |
|
|
1002 | return 0; |
|
|
1003 | } |
|
|
1004 | } |
|
|
1005 | |
|
|
1006 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
1007 | } |
|
|
1008 | |
|
|
1009 | static int |
|
|
1010 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
1011 | { |
|
|
1012 | const char *s = MgPV_nolen_const (mg); |
|
|
1013 | |
|
|
1014 | if (*s == '_') |
|
|
1015 | { |
|
|
1016 | SV **svp = 0; |
|
|
1017 | |
|
|
1018 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
1019 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
1020 | |
|
|
1021 | if (svp) |
|
|
1022 | { |
|
|
1023 | SV *old = *svp; |
|
|
1024 | *svp = SvOK (sv) ? newSVsv (sv) : 0; |
|
|
1025 | SvREFCNT_dec (old); |
|
|
1026 | return 0; |
|
|
1027 | } |
|
|
1028 | } |
|
|
1029 | |
|
|
1030 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | static void |
|
|
1034 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
1035 | { |
|
|
1036 | /* kind of mega-hacky, but works */ |
|
|
1037 | ta->next = ta->prev = (struct coro *)ta; |
|
|
1038 | } |
|
|
1039 | |
|
|
1040 | static int |
|
|
1041 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
1042 | { |
|
|
1043 | return 0; |
|
|
1044 | } |
|
|
1045 | |
|
|
1046 | static int |
|
|
1047 | slf_check_repeat (pTHX_ struct CoroSLF *frame) |
|
|
1048 | { |
|
|
1049 | return 1; |
|
|
1050 | } |
|
|
1051 | |
|
|
1052 | static UNOP init_perl_op; |
|
|
1053 | |
|
|
1054 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
1055 | init_perl (pTHX_ struct coro *coro) |
480 | { |
1056 | { |
481 | /* |
1057 | /* |
482 | * emulate part of the perl startup here. |
1058 | * emulate part of the perl startup here. |
483 | */ |
1059 | */ |
484 | |
|
|
485 | coro_init_stacks (); |
1060 | coro_init_stacks (aTHX); |
486 | |
1061 | |
|
|
1062 | PL_runops = RUNOPS_DEFAULT; |
|
|
1063 | PL_curcop = &PL_compiling; |
|
|
1064 | PL_in_eval = EVAL_NULL; |
487 | PL_curcop = 0; |
1065 | PL_comppad = 0; |
488 | PL_in_eval = 0; |
1066 | PL_comppad_name = 0; |
|
|
1067 | PL_comppad_name_fill = 0; |
|
|
1068 | PL_comppad_name_floor = 0; |
489 | PL_curpm = 0; |
1069 | PL_curpm = 0; |
|
|
1070 | PL_curpad = 0; |
|
|
1071 | PL_localizing = 0; |
|
|
1072 | PL_restartop = 0; |
|
|
1073 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
1074 | PL_parser = 0; |
|
|
1075 | #endif |
|
|
1076 | PL_hints = 0; |
|
|
1077 | |
|
|
1078 | /* recreate the die/warn hooks */ |
|
|
1079 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
1080 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
1081 | |
|
|
1082 | GvSV (PL_defgv) = newSV (0); |
|
|
1083 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
1084 | GvSV (PL_errgv) = newSV (0); |
|
|
1085 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
1086 | GvHV (PL_hintgv) = 0; |
|
|
1087 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
1088 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
490 | |
1089 | |
491 | { |
1090 | { |
492 | dSP; |
1091 | dSP; |
493 | LOGOP myop; |
1092 | UNOP myop; |
494 | |
1093 | |
495 | /* I have no idea why this is needed, but it is */ |
1094 | Zero (&myop, 1, UNOP); |
|
|
1095 | myop.op_next = Nullop; |
|
|
1096 | myop.op_type = OP_ENTERSUB; |
|
|
1097 | myop.op_flags = OPf_WANT_VOID; |
|
|
1098 | |
496 | PUSHMARK (SP); |
1099 | PUSHMARK (SP); |
497 | |
1100 | PUSHs ((SV *)coro->startcv); |
498 | SvREFCNT_dec (GvAV (PL_defgv)); |
1101 | PUTBACK; |
499 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
500 | |
|
|
501 | Zero (&myop, 1, LOGOP); |
|
|
502 | myop.op_next = Nullop; |
|
|
503 | myop.op_flags = OPf_WANT_VOID; |
|
|
504 | |
|
|
505 | PL_op = (OP *)&myop; |
1102 | PL_op = (OP *)&myop; |
506 | |
|
|
507 | PUSHMARK (SP); |
|
|
508 | XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE)); |
|
|
509 | PUTBACK; |
|
|
510 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1103 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
511 | SPAGAIN; |
|
|
512 | |
|
|
513 | ENTER; /* necessary e.g. for dounwind */ |
|
|
514 | } |
1104 | } |
515 | } |
|
|
516 | |
1105 | |
|
|
1106 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
1107 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
1108 | */ |
|
|
1109 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
1110 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
1111 | |
|
|
1112 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
1113 | init_perl_op.op_next = PL_op; |
|
|
1114 | init_perl_op.op_type = OP_ENTERSUB; |
|
|
1115 | init_perl_op.op_ppaddr = pp_slf; |
|
|
1116 | /* no flags etc. required, as an init function won't be called */ |
|
|
1117 | |
|
|
1118 | PL_op = (OP *)&init_perl_op; |
|
|
1119 | |
|
|
1120 | /* copy throw, in case it was set before init_perl */ |
|
|
1121 | CORO_THROW = coro->except; |
|
|
1122 | |
|
|
1123 | SWAP_SVS (coro); |
|
|
1124 | |
|
|
1125 | if (expect_false (enable_times)) |
|
|
1126 | { |
|
|
1127 | coro_times_update (); |
|
|
1128 | coro_times_sub (coro); |
|
|
1129 | } |
|
|
1130 | } |
|
|
1131 | |
517 | static void |
1132 | static void |
|
|
1133 | coro_unwind_stacks (pTHX) |
|
|
1134 | { |
|
|
1135 | if (!IN_DESTRUCT) |
|
|
1136 | { |
|
|
1137 | /* restore all saved variables and stuff */ |
|
|
1138 | LEAVE_SCOPE (0); |
|
|
1139 | assert (PL_tmps_floor == -1); |
|
|
1140 | |
|
|
1141 | /* free all temporaries */ |
|
|
1142 | FREETMPS; |
|
|
1143 | assert (PL_tmps_ix == -1); |
|
|
1144 | |
|
|
1145 | /* unwind all extra stacks */ |
|
|
1146 | POPSTACK_TO (PL_mainstack); |
|
|
1147 | |
|
|
1148 | /* unwind main stack */ |
|
|
1149 | dounwind (-1); |
|
|
1150 | } |
|
|
1151 | } |
|
|
1152 | |
|
|
1153 | static void |
|
|
1154 | destroy_perl (pTHX_ struct coro *coro) |
|
|
1155 | { |
|
|
1156 | SV *svf [9]; |
|
|
1157 | |
|
|
1158 | { |
|
|
1159 | SV *old_current = SvRV (coro_current); |
|
|
1160 | struct coro *current = SvSTATE (old_current); |
|
|
1161 | |
|
|
1162 | assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); |
|
|
1163 | |
|
|
1164 | save_perl (aTHX_ current); |
|
|
1165 | |
|
|
1166 | /* this will cause transfer_check to croak on block*/ |
|
|
1167 | SvRV_set (coro_current, (SV *)coro->hv); |
|
|
1168 | |
|
|
1169 | load_perl (aTHX_ coro); |
|
|
1170 | |
|
|
1171 | coro_unwind_stacks (aTHX); |
|
|
1172 | coro_destruct_stacks (aTHX); |
|
|
1173 | |
|
|
1174 | /* restore swapped sv's */ |
|
|
1175 | SWAP_SVS (coro); |
|
|
1176 | |
|
|
1177 | // now save some sv's to be free'd later |
|
|
1178 | svf [0] = GvSV (PL_defgv); |
|
|
1179 | svf [1] = (SV *)GvAV (PL_defgv); |
|
|
1180 | svf [2] = GvSV (PL_errgv); |
|
|
1181 | svf [3] = (SV *)PL_defoutgv; |
|
|
1182 | svf [4] = PL_rs; |
|
|
1183 | svf [5] = GvSV (irsgv); |
|
|
1184 | svf [6] = (SV *)GvHV (PL_hintgv); |
|
|
1185 | svf [7] = PL_diehook; |
|
|
1186 | svf [8] = PL_warnhook; |
|
|
1187 | assert (9 == sizeof (svf) / sizeof (*svf)); |
|
|
1188 | |
|
|
1189 | SvRV_set (coro_current, old_current); |
|
|
1190 | |
|
|
1191 | load_perl (aTHX_ current); |
|
|
1192 | } |
|
|
1193 | |
|
|
1194 | { |
|
|
1195 | unsigned int i; |
|
|
1196 | |
|
|
1197 | for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i) |
|
|
1198 | SvREFCNT_dec (svf [i]); |
|
|
1199 | |
|
|
1200 | SvREFCNT_dec (coro->saved_deffh); |
|
|
1201 | SvREFCNT_dec (coro->rouse_cb); |
|
|
1202 | SvREFCNT_dec (coro->invoke_cb); |
|
|
1203 | SvREFCNT_dec (coro->invoke_av); |
|
|
1204 | } |
|
|
1205 | } |
|
|
1206 | |
|
|
1207 | INLINE void |
518 | free_coro_mortal () |
1208 | free_coro_mortal (pTHX) |
519 | { |
1209 | { |
520 | if (coro_mortal) |
1210 | if (expect_true (coro_mortal)) |
521 | { |
1211 | { |
522 | SvREFCNT_dec (coro_mortal); |
1212 | SvREFCNT_dec (coro_mortal); |
523 | coro_mortal = 0; |
1213 | coro_mortal = 0; |
524 | } |
1214 | } |
525 | } |
1215 | } |
526 | |
1216 | |
|
|
1217 | static int |
|
|
1218 | runops_trace (pTHX) |
|
|
1219 | { |
|
|
1220 | COP *oldcop = 0; |
|
|
1221 | int oldcxix = -2; |
|
|
1222 | |
|
|
1223 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
1224 | { |
|
|
1225 | PERL_ASYNC_CHECK (); |
|
|
1226 | |
|
|
1227 | if (cctx_current->flags & CC_TRACE_ALL) |
|
|
1228 | { |
|
|
1229 | if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB) |
|
|
1230 | { |
|
|
1231 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1232 | SV **bot, **top; |
|
|
1233 | AV *av = newAV (); /* return values */ |
|
|
1234 | SV **cb; |
|
|
1235 | dSP; |
|
|
1236 | |
|
|
1237 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1238 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1239 | if (isGV (gv)) |
|
|
1240 | gv_efullname3 (fullname, gv, 0); |
|
|
1241 | |
|
|
1242 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
1243 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
1244 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
1245 | : bot; |
|
|
1246 | |
|
|
1247 | av_extend (av, top - bot); |
|
|
1248 | while (bot < top) |
|
|
1249 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
1250 | |
|
|
1251 | PL_runops = RUNOPS_DEFAULT; |
|
|
1252 | ENTER; |
|
|
1253 | SAVETMPS; |
|
|
1254 | EXTEND (SP, 3); |
|
|
1255 | PUSHMARK (SP); |
|
|
1256 | PUSHs (&PL_sv_no); |
|
|
1257 | PUSHs (fullname); |
|
|
1258 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
1259 | PUTBACK; |
|
|
1260 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1261 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1262 | SPAGAIN; |
|
|
1263 | FREETMPS; |
|
|
1264 | LEAVE; |
|
|
1265 | PL_runops = runops_trace; |
|
|
1266 | } |
|
|
1267 | |
|
|
1268 | if (oldcop != PL_curcop) |
|
|
1269 | { |
|
|
1270 | oldcop = PL_curcop; |
|
|
1271 | |
|
|
1272 | if (PL_curcop != &PL_compiling) |
|
|
1273 | { |
|
|
1274 | SV **cb; |
|
|
1275 | |
|
|
1276 | if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) |
|
|
1277 | { |
|
|
1278 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1279 | |
|
|
1280 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
1281 | { |
|
|
1282 | dSP; |
|
|
1283 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1284 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1285 | |
|
|
1286 | if (isGV (gv)) |
|
|
1287 | gv_efullname3 (fullname, gv, 0); |
|
|
1288 | |
|
|
1289 | PL_runops = RUNOPS_DEFAULT; |
|
|
1290 | ENTER; |
|
|
1291 | SAVETMPS; |
|
|
1292 | EXTEND (SP, 3); |
|
|
1293 | PUSHMARK (SP); |
|
|
1294 | PUSHs (&PL_sv_yes); |
|
|
1295 | PUSHs (fullname); |
|
|
1296 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1297 | PUTBACK; |
|
|
1298 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1299 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1300 | SPAGAIN; |
|
|
1301 | FREETMPS; |
|
|
1302 | LEAVE; |
|
|
1303 | PL_runops = runops_trace; |
|
|
1304 | } |
|
|
1305 | |
|
|
1306 | oldcxix = cxstack_ix; |
|
|
1307 | } |
|
|
1308 | |
|
|
1309 | if (cctx_current->flags & CC_TRACE_LINE) |
|
|
1310 | { |
|
|
1311 | dSP; |
|
|
1312 | |
|
|
1313 | PL_runops = RUNOPS_DEFAULT; |
|
|
1314 | ENTER; |
|
|
1315 | SAVETMPS; |
|
|
1316 | EXTEND (SP, 3); |
|
|
1317 | PL_runops = RUNOPS_DEFAULT; |
|
|
1318 | PUSHMARK (SP); |
|
|
1319 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1320 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1321 | PUTBACK; |
|
|
1322 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1323 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1324 | SPAGAIN; |
|
|
1325 | FREETMPS; |
|
|
1326 | LEAVE; |
|
|
1327 | PL_runops = runops_trace; |
|
|
1328 | } |
|
|
1329 | } |
|
|
1330 | } |
|
|
1331 | } |
|
|
1332 | } |
|
|
1333 | |
|
|
1334 | TAINT_NOT; |
|
|
1335 | return 0; |
|
|
1336 | } |
|
|
1337 | |
|
|
1338 | static struct CoroSLF cctx_ssl_frame; |
|
|
1339 | |
|
|
1340 | static void |
|
|
1341 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1342 | { |
|
|
1343 | ta->prev = 0; |
|
|
1344 | } |
|
|
1345 | |
|
|
1346 | static int |
|
|
1347 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
|
|
1348 | { |
|
|
1349 | *frame = cctx_ssl_frame; |
|
|
1350 | |
|
|
1351 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1352 | } |
|
|
1353 | |
|
|
1354 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
527 | static void NOINLINE |
1355 | static void NOINLINE |
528 | prepare_cctx (coro_cctx *cctx) |
1356 | cctx_prepare (pTHX) |
529 | { |
1357 | { |
530 | dSP; |
|
|
531 | LOGOP myop; |
|
|
532 | |
|
|
533 | Zero (&myop, 1, LOGOP); |
|
|
534 | myop.op_next = PL_op; |
|
|
535 | myop.op_flags = OPf_WANT_VOID; |
|
|
536 | |
|
|
537 | sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx)); |
|
|
538 | |
|
|
539 | PUSHMARK (SP); |
|
|
540 | XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
541 | PUTBACK; |
|
|
542 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
543 | SPAGAIN; |
|
|
544 | } |
|
|
545 | |
|
|
546 | static void |
|
|
547 | coro_run (void *arg) |
|
|
548 | { |
|
|
549 | /* coro_run is the alternative epilogue of transfer() */ |
|
|
550 | UNLOCK; |
|
|
551 | |
|
|
552 | /* |
|
|
553 | * this is a _very_ stripped down perl interpreter ;) |
|
|
554 | */ |
|
|
555 | PL_top_env = &PL_start_env; |
1358 | PL_top_env = &PL_start_env; |
556 | |
1359 | |
|
|
1360 | if (cctx_current->flags & CC_TRACE) |
|
|
1361 | PL_runops = runops_trace; |
|
|
1362 | |
|
|
1363 | /* we already must be executing an SLF op, there is no other valid way |
|
|
1364 | * that can lead to creation of a new cctx */ |
|
|
1365 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1366 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
|
|
1367 | |
|
|
1368 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
|
|
1369 | cctx_ssl_frame = slf_frame; |
|
|
1370 | |
|
|
1371 | slf_frame.prepare = slf_prepare_set_stacklevel; |
|
|
1372 | slf_frame.check = slf_check_set_stacklevel; |
|
|
1373 | } |
|
|
1374 | |
|
|
1375 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1376 | INLINE void |
|
|
1377 | transfer_tail (pTHX) |
|
|
1378 | { |
|
|
1379 | free_coro_mortal (aTHX); |
|
|
1380 | } |
|
|
1381 | |
|
|
1382 | /* |
|
|
1383 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1384 | */ |
|
|
1385 | static void |
|
|
1386 | cctx_run (void *arg) |
|
|
1387 | { |
|
|
1388 | #ifdef USE_ITHREADS |
|
|
1389 | # if CORO_PTHREAD |
|
|
1390 | PERL_SET_CONTEXT (coro_thx); |
|
|
1391 | # endif |
|
|
1392 | #endif |
|
|
1393 | { |
|
|
1394 | dTHX; |
|
|
1395 | |
|
|
1396 | /* normally we would need to skip the entersub here */ |
|
|
1397 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1398 | /* PL_nop = PL_nop->op_next */ |
|
|
1399 | |
557 | /* inject call to cctx_init */ |
1400 | /* inject a fake subroutine call to cctx_init */ |
558 | prepare_cctx ((coro_cctx *)arg); |
1401 | cctx_prepare (aTHX); |
559 | |
1402 | |
|
|
1403 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1404 | transfer_tail (aTHX); |
|
|
1405 | |
560 | /* somebody will hit me for both perl_run and PL_restartop */ |
1406 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1407 | PL_restartop = PL_op; |
561 | perl_run (PL_curinterp); |
1408 | perl_run (PL_curinterp); |
|
|
1409 | /* |
|
|
1410 | * Unfortunately, there is no way to get at the return values of the |
|
|
1411 | * coro body here, as perl_run destroys these. Likewise, we cannot catch |
|
|
1412 | * runtime errors here, as this is just a random interpreter, not a thread. |
|
|
1413 | */ |
562 | |
1414 | |
563 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr); |
1415 | /* |
564 | abort (); |
1416 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1417 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1418 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1419 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1420 | * coroutine as Coro has no such concept. |
|
|
1421 | * This actually isn't valid with the pthread backend, but OSes requiring |
|
|
1422 | * that backend are too broken to do it in a standards-compliant way. |
|
|
1423 | */ |
|
|
1424 | PL_top_env = main_top_env; |
|
|
1425 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1426 | } |
565 | } |
1427 | } |
566 | |
1428 | |
567 | static coro_cctx * |
1429 | static coro_cctx * |
568 | cctx_new () |
1430 | cctx_new () |
569 | { |
1431 | { |
570 | coro_cctx *cctx; |
1432 | coro_cctx *cctx; |
571 | |
1433 | |
572 | ++cctx_count; |
1434 | ++cctx_count; |
573 | |
|
|
574 | New (0, cctx, 1, coro_cctx); |
1435 | New (0, cctx, 1, coro_cctx); |
575 | |
1436 | |
|
|
1437 | cctx->gen = cctx_gen; |
|
|
1438 | cctx->flags = 0; |
|
|
1439 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1440 | |
|
|
1441 | return cctx; |
|
|
1442 | } |
|
|
1443 | |
|
|
1444 | /* create a new cctx only suitable as source */ |
|
|
1445 | static coro_cctx * |
|
|
1446 | cctx_new_empty () |
|
|
1447 | { |
|
|
1448 | coro_cctx *cctx = cctx_new (); |
|
|
1449 | |
|
|
1450 | cctx->sptr = 0; |
|
|
1451 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1452 | |
|
|
1453 | return cctx; |
|
|
1454 | } |
|
|
1455 | |
|
|
1456 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1457 | static coro_cctx * |
|
|
1458 | cctx_new_run () |
|
|
1459 | { |
|
|
1460 | coro_cctx *cctx = cctx_new (); |
|
|
1461 | void *stack_start; |
|
|
1462 | size_t stack_size; |
|
|
1463 | |
576 | #if HAVE_MMAP |
1464 | #if HAVE_MMAP |
577 | |
|
|
578 | cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
1465 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
579 | /* mmap suppsedly does allocate-on-write for us */ |
1466 | /* mmap supposedly does allocate-on-write for us */ |
580 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1467 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
581 | |
1468 | |
582 | if (cctx->sptr == (void *)-1) |
1469 | if (cctx->sptr != (void *)-1) |
583 | { |
|
|
584 | perror ("FATAL: unable to mmap stack for coroutine"); |
|
|
585 | _exit (EXIT_FAILURE); |
|
|
586 | } |
1470 | { |
587 | |
1471 | #if CORO_STACKGUARD |
588 | # if STACKGUARD |
|
|
589 | mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
1472 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
590 | # endif |
1473 | #endif |
591 | |
1474 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
592 | #else |
1475 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
593 | |
1476 | cctx->flags |= CC_MAPPED; |
594 | cctx->ssize = STACKSIZE * (long)sizeof (long); |
|
|
595 | New (0, cctx->sptr, STACKSIZE, long); |
|
|
596 | |
|
|
597 | if (!cctx->sptr) |
|
|
598 | { |
1477 | } |
599 | perror ("FATAL: unable to malloc stack for coroutine"); |
1478 | else |
600 | _exit (EXIT_FAILURE); |
|
|
601 | } |
|
|
602 | |
|
|
603 | #endif |
1479 | #endif |
|
|
1480 | { |
|
|
1481 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1482 | New (0, cctx->sptr, cctx_stacksize, long); |
604 | |
1483 | |
|
|
1484 | if (!cctx->sptr) |
|
|
1485 | { |
|
|
1486 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1487 | _exit (EXIT_FAILURE); |
|
|
1488 | } |
|
|
1489 | |
|
|
1490 | stack_start = cctx->sptr; |
|
|
1491 | stack_size = cctx->ssize; |
|
|
1492 | } |
|
|
1493 | |
605 | #if USE_VALGRIND |
1494 | #if CORO_USE_VALGRIND |
606 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ( |
1495 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
607 | STACKGUARD * PAGESIZE + (char *)cctx->sptr, |
|
|
608 | cctx->ssize + (char *)cctx->sptr |
|
|
609 | ); |
|
|
610 | #endif |
1496 | #endif |
611 | |
1497 | |
612 | coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize); |
1498 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
613 | |
1499 | |
614 | return cctx; |
1500 | return cctx; |
615 | } |
1501 | } |
616 | |
1502 | |
617 | static void |
1503 | static void |
618 | cctx_free (coro_cctx *cctx) |
1504 | cctx_destroy (coro_cctx *cctx) |
619 | { |
1505 | { |
620 | if (!cctx) |
1506 | if (!cctx) |
621 | return; |
1507 | return; |
622 | |
1508 | |
|
|
1509 | assert (("FATAL: tried to destroy current cctx", cctx != cctx_current)); |
|
|
1510 | |
623 | --cctx_count; |
1511 | --cctx_count; |
|
|
1512 | coro_destroy (&cctx->cctx); |
624 | |
1513 | |
625 | #if USE_VALGRIND |
1514 | /* coro_transfer creates new, empty cctx's */ |
|
|
1515 | if (cctx->sptr) |
|
|
1516 | { |
|
|
1517 | #if CORO_USE_VALGRIND |
626 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
1518 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1519 | #endif |
|
|
1520 | |
|
|
1521 | #if HAVE_MMAP |
|
|
1522 | if (cctx->flags & CC_MAPPED) |
|
|
1523 | munmap (cctx->sptr, cctx->ssize); |
|
|
1524 | else |
627 | #endif |
1525 | #endif |
628 | |
|
|
629 | #if HAVE_MMAP |
|
|
630 | munmap (cctx->sptr, cctx->ssize); |
|
|
631 | #else |
|
|
632 | Safefree (cctx->sptr); |
1526 | Safefree (cctx->sptr); |
633 | #endif |
1527 | } |
634 | |
1528 | |
635 | Safefree (cctx); |
1529 | Safefree (cctx); |
636 | } |
1530 | } |
637 | |
1531 | |
|
|
1532 | /* wether this cctx should be destructed */ |
|
|
1533 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1534 | |
638 | static coro_cctx * |
1535 | static coro_cctx * |
639 | cctx_get () |
1536 | cctx_get (pTHX) |
640 | { |
1537 | { |
641 | coro_cctx *cctx; |
1538 | while (expect_true (cctx_first)) |
642 | |
|
|
643 | if (cctx_first) |
|
|
644 | { |
1539 | { |
|
|
1540 | coro_cctx *cctx = cctx_first; |
|
|
1541 | cctx_first = cctx->next; |
645 | --cctx_idle; |
1542 | --cctx_idle; |
646 | cctx = cctx_first; |
1543 | |
647 | cctx_first = cctx->next; |
1544 | if (expect_true (!CCTX_EXPIRED (cctx))) |
648 | } |
1545 | return cctx; |
649 | else |
1546 | |
650 | { |
1547 | cctx_destroy (cctx); |
651 | cctx = cctx_new (); |
|
|
652 | PL_op = PL_op->op_next; |
|
|
653 | } |
1548 | } |
654 | |
1549 | |
655 | return cctx; |
1550 | return cctx_new_run (); |
656 | } |
1551 | } |
657 | |
1552 | |
658 | static void |
1553 | static void |
659 | cctx_put (coro_cctx *cctx) |
1554 | cctx_put (coro_cctx *cctx) |
660 | { |
1555 | { |
|
|
1556 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1557 | |
|
|
1558 | /* free another cctx if overlimit */ |
|
|
1559 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1560 | { |
|
|
1561 | coro_cctx *first = cctx_first; |
|
|
1562 | cctx_first = first->next; |
|
|
1563 | --cctx_idle; |
|
|
1564 | |
|
|
1565 | cctx_destroy (first); |
|
|
1566 | } |
|
|
1567 | |
661 | ++cctx_idle; |
1568 | ++cctx_idle; |
662 | cctx->next = cctx_first; |
1569 | cctx->next = cctx_first; |
663 | cctx_first = cctx; |
1570 | cctx_first = cctx; |
664 | } |
1571 | } |
665 | |
1572 | |
666 | /* never call directly, always through the coro_state_transfer global variable */ |
1573 | /** coroutine switching *****************************************************/ |
667 | static void NOINLINE |
1574 | |
|
|
1575 | static void |
|
|
1576 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1577 | { |
|
|
1578 | /* TODO: throwing up here is considered harmful */ |
|
|
1579 | |
|
|
1580 | if (expect_true (prev != next)) |
|
|
1581 | { |
|
|
1582 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1583 | croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); |
|
|
1584 | |
|
|
1585 | if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED))) |
|
|
1586 | croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); |
|
|
1587 | |
|
|
1588 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1589 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1590 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1591 | #endif |
|
|
1592 | } |
|
|
1593 | } |
|
|
1594 | |
|
|
1595 | /* always use the TRANSFER macro */ |
|
|
1596 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
668 | transfer (struct coro *prev, struct coro *next, int flags) |
1597 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
669 | { |
1598 | { |
670 | dSTACKLEVEL; |
1599 | dSTACKLEVEL; |
671 | |
1600 | |
672 | /* sometimes transfer is only called to set idle_sp */ |
1601 | /* sometimes transfer is only called to set idle_sp */ |
673 | if (flags == TRANSFER_SET_STACKLEVEL) |
1602 | if (expect_false (!prev)) |
|
|
1603 | { |
674 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
1604 | cctx_current->idle_sp = STACKLEVEL; |
675 | else if (prev != next) |
1605 | assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
676 | { |
1606 | } |
|
|
1607 | else if (expect_true (prev != next)) |
|
|
1608 | { |
677 | coro_cctx *prev__cctx; |
1609 | coro_cctx *cctx_prev; |
678 | |
1610 | |
679 | if (!prev->cctx) |
1611 | if (expect_false (prev->flags & CF_NEW)) |
680 | { |
1612 | { |
681 | /* create a new empty context */ |
1613 | /* create a new empty/source context */ |
682 | Newz (0, prev->cctx, 1, coro_cctx); |
1614 | prev->flags &= ~CF_NEW; |
683 | prev->cctx->inuse = 1; |
|
|
684 | prev->flags |= CF_RUNNING; |
1615 | prev->flags |= CF_RUNNING; |
685 | } |
1616 | } |
686 | |
|
|
687 | if (!prev->flags & CF_RUNNING) |
|
|
688 | croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states"); |
|
|
689 | |
|
|
690 | if (next->flags & CF_RUNNING) |
|
|
691 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
692 | |
1617 | |
693 | prev->flags &= ~CF_RUNNING; |
1618 | prev->flags &= ~CF_RUNNING; |
694 | next->flags |= CF_RUNNING; |
1619 | next->flags |= CF_RUNNING; |
695 | |
1620 | |
696 | LOCK; |
1621 | /* first get rid of the old state */ |
|
|
1622 | save_perl (aTHX_ prev); |
697 | |
1623 | |
698 | if (next->mainstack) |
1624 | if (expect_false (next->flags & CF_NEW)) |
699 | { |
1625 | { |
700 | /* coroutine already started */ |
1626 | /* need to start coroutine */ |
701 | SAVE (prev, flags); |
1627 | next->flags &= ~CF_NEW; |
702 | LOAD (next); |
1628 | /* setup coroutine call */ |
|
|
1629 | init_perl (aTHX_ next); |
703 | } |
1630 | } |
704 | else |
1631 | else |
|
|
1632 | load_perl (aTHX_ next); |
|
|
1633 | |
|
|
1634 | /* possibly untie and reuse the cctx */ |
|
|
1635 | if (expect_true ( |
|
|
1636 | cctx_current->idle_sp == STACKLEVEL |
|
|
1637 | && !(cctx_current->flags & CC_TRACE) |
|
|
1638 | && !force_cctx |
|
|
1639 | )) |
705 | { |
1640 | { |
706 | /* need to start coroutine */ |
1641 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
707 | /* first get rid of the old state */ |
1642 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); |
708 | SAVE (prev, -1); |
1643 | |
709 | /* setup coroutine call */ |
1644 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ |
710 | setup_coro (next); |
1645 | /* without this the next cctx_get might destroy the running cctx while still in use */ |
711 | /* need a new stack */ |
1646 | if (expect_false (CCTX_EXPIRED (cctx_current))) |
712 | assert (!next->stack); |
1647 | if (expect_true (!next->cctx)) |
|
|
1648 | next->cctx = cctx_get (aTHX); |
|
|
1649 | |
|
|
1650 | cctx_put (cctx_current); |
713 | } |
1651 | } |
|
|
1652 | else |
|
|
1653 | prev->cctx = cctx_current; |
714 | |
1654 | |
715 | prev__cctx = prev->cctx; |
1655 | ++next->usecount; |
716 | |
1656 | |
717 | /* possibly "free" the cctx */ |
1657 | cctx_prev = cctx_current; |
718 | if (prev__cctx->idle_sp == STACKLEVEL) |
1658 | cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); |
|
|
1659 | |
|
|
1660 | next->cctx = 0; |
|
|
1661 | |
|
|
1662 | if (expect_false (cctx_prev != cctx_current)) |
719 | { |
1663 | { |
720 | assert (PL_top_env == prev__cctx->top_env); |
1664 | cctx_prev->top_env = PL_top_env; |
721 | |
1665 | PL_top_env = cctx_current->top_env; |
722 | cctx_put (prev__cctx); |
1666 | coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); |
723 | prev->cctx = 0; |
|
|
724 | } |
1667 | } |
725 | else if (prev__cctx->idle_sp) //D |
|
|
726 | fprintf (stderr, "coro %p has own stack %p-%p\n", prev__cctx, prev__cctx->idle_sp, STACKLEVEL);//D |
|
|
727 | |
1668 | |
728 | if (!next->cctx) |
1669 | transfer_tail (aTHX); |
729 | next->cctx = cctx_get (); |
|
|
730 | |
|
|
731 | if (prev__cctx != next->cctx) |
|
|
732 | { |
|
|
733 | assert ( prev__cctx->inuse); |
|
|
734 | assert (!next->cctx->inuse); |
|
|
735 | |
|
|
736 | prev__cctx->inuse = 0; |
|
|
737 | next->cctx->inuse = 1; |
|
|
738 | |
|
|
739 | prev__cctx->top_env = PL_top_env; |
|
|
740 | PL_top_env = next->cctx->top_env; |
|
|
741 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
742 | } |
|
|
743 | |
|
|
744 | free_coro_mortal (); |
|
|
745 | |
|
|
746 | UNLOCK; |
|
|
747 | } |
1670 | } |
748 | } |
1671 | } |
749 | |
1672 | |
750 | struct transfer_args |
1673 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
751 | { |
|
|
752 | struct coro *prev, *next; |
|
|
753 | int flags; |
|
|
754 | }; |
|
|
755 | |
|
|
756 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
1674 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
757 | |
1675 | |
|
|
1676 | /** high level stuff ********************************************************/ |
|
|
1677 | |
758 | static void |
1678 | static void |
759 | coro_state_destroy (struct coro *coro) |
1679 | coro_state_destroy (pTHX_ struct coro *coro) |
760 | { |
1680 | { |
761 | if (coro->refcnt--) |
1681 | if (coro->flags & CF_DESTROYED) |
762 | return; |
1682 | return; |
763 | |
1683 | |
|
|
1684 | slf_destroy (aTHX_ coro); |
|
|
1685 | |
|
|
1686 | coro->flags |= CF_DESTROYED; |
|
|
1687 | |
764 | if (coro->flags & CF_RUNNING) |
1688 | if (coro->flags & CF_READY) |
765 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
766 | |
|
|
767 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
768 | { |
|
|
769 | struct coro temp; |
|
|
770 | |
|
|
771 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
|
|
772 | LOAD (coro); |
|
|
773 | |
|
|
774 | coro_destroy_stacks (); |
|
|
775 | |
|
|
776 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
777 | |
|
|
778 | coro->mainstack = 0; |
|
|
779 | } |
1689 | { |
|
|
1690 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1691 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1692 | --coro_nready; |
|
|
1693 | } |
|
|
1694 | else |
|
|
1695 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
780 | |
1696 | |
|
|
1697 | if (coro->mainstack |
|
|
1698 | && coro->mainstack != main_mainstack |
|
|
1699 | && coro->slot |
|
|
1700 | && !PL_dirty) |
|
|
1701 | destroy_perl (aTHX_ coro); |
|
|
1702 | |
|
|
1703 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1704 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1705 | if (coro == coro_first) coro_first = coro->next; |
|
|
1706 | |
781 | cctx_free (coro->cctx); |
1707 | cctx_destroy (coro->cctx); |
|
|
1708 | SvREFCNT_dec (coro->startcv); |
782 | SvREFCNT_dec (coro->args); |
1709 | SvREFCNT_dec (coro->args); |
783 | Safefree (coro); |
1710 | SvREFCNT_dec (coro->swap_sv); |
|
|
1711 | SvREFCNT_dec (CORO_THROW); |
784 | } |
1712 | } |
785 | |
1713 | |
786 | static int |
1714 | static int |
787 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
1715 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
788 | { |
1716 | { |
789 | struct coro *coro = (struct coro *)mg->mg_ptr; |
1717 | struct coro *coro = (struct coro *)mg->mg_ptr; |
790 | mg->mg_ptr = 0; |
1718 | mg->mg_ptr = 0; |
791 | |
1719 | |
|
|
1720 | coro->hv = 0; |
|
|
1721 | |
|
|
1722 | if (--coro->refcnt < 0) |
|
|
1723 | { |
792 | coro_state_destroy (coro); |
1724 | coro_state_destroy (aTHX_ coro); |
|
|
1725 | Safefree (coro); |
|
|
1726 | } |
793 | |
1727 | |
794 | return 0; |
1728 | return 0; |
795 | } |
1729 | } |
796 | |
1730 | |
797 | static int |
1731 | static int |
… | |
… | |
804 | return 0; |
1738 | return 0; |
805 | } |
1739 | } |
806 | |
1740 | |
807 | static MGVTBL coro_state_vtbl = { |
1741 | static MGVTBL coro_state_vtbl = { |
808 | 0, 0, 0, 0, |
1742 | 0, 0, 0, 0, |
809 | coro_state_clear, |
1743 | coro_state_free, |
810 | 0, |
1744 | 0, |
811 | #ifdef MGf_DUP |
1745 | #ifdef MGf_DUP |
812 | coro_state_dup, |
1746 | coro_state_dup, |
813 | #else |
1747 | #else |
814 | # define MGf_DUP 0 |
1748 | # define MGf_DUP 0 |
815 | #endif |
1749 | #endif |
816 | }; |
1750 | }; |
817 | |
1751 | |
818 | static struct coro * |
|
|
819 | SvSTATE (SV *coro) |
|
|
820 | { |
|
|
821 | HV *stash; |
|
|
822 | MAGIC *mg; |
|
|
823 | |
|
|
824 | if (SvROK (coro)) |
|
|
825 | coro = SvRV (coro); |
|
|
826 | |
|
|
827 | stash = SvSTASH (coro); |
|
|
828 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
829 | { |
|
|
830 | /* very slow, but rare, check */ |
|
|
831 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
832 | croak ("Coro::State object required"); |
|
|
833 | } |
|
|
834 | |
|
|
835 | mg = SvMAGIC (coro); |
|
|
836 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
837 | return (struct coro *)mg->mg_ptr; |
|
|
838 | } |
|
|
839 | |
|
|
840 | static void |
1752 | static void |
841 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
1753 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
842 | { |
1754 | { |
843 | ta->prev = SvSTATE (prev); |
1755 | ta->prev = SvSTATE (prev_sv); |
844 | ta->next = SvSTATE (next); |
1756 | ta->next = SvSTATE (next_sv); |
845 | ta->flags = flags; |
1757 | TRANSFER_CHECK (*ta); |
846 | } |
1758 | } |
847 | |
1759 | |
848 | static void |
1760 | static void |
849 | api_transfer (SV *prev, SV *next, int flags) |
1761 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1762 | { |
|
|
1763 | struct coro_transfer_args ta; |
|
|
1764 | |
|
|
1765 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1766 | TRANSFER (ta, 1); |
|
|
1767 | } |
|
|
1768 | |
|
|
1769 | /** Coro ********************************************************************/ |
|
|
1770 | |
|
|
1771 | INLINE void |
|
|
1772 | coro_enq (pTHX_ struct coro *coro) |
|
|
1773 | { |
|
|
1774 | struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; |
|
|
1775 | |
|
|
1776 | SvREFCNT_inc_NN (coro->hv); |
|
|
1777 | |
|
|
1778 | coro->next_ready = 0; |
|
|
1779 | *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; |
|
|
1780 | ready [1] = coro; |
|
|
1781 | } |
|
|
1782 | |
|
|
1783 | INLINE struct coro * |
|
|
1784 | coro_deq (pTHX) |
|
|
1785 | { |
|
|
1786 | int prio; |
|
|
1787 | |
|
|
1788 | for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) |
|
|
1789 | { |
|
|
1790 | struct coro **ready = coro_ready [prio]; |
|
|
1791 | |
|
|
1792 | if (ready [0]) |
|
|
1793 | { |
|
|
1794 | struct coro *coro = ready [0]; |
|
|
1795 | ready [0] = coro->next_ready; |
|
|
1796 | return coro; |
|
|
1797 | } |
|
|
1798 | } |
|
|
1799 | |
|
|
1800 | return 0; |
|
|
1801 | } |
|
|
1802 | |
|
|
1803 | static void |
|
|
1804 | invoke_sv_ready_hook_helper (void) |
850 | { |
1805 | { |
851 | dTHX; |
1806 | dTHX; |
852 | struct transfer_args ta; |
1807 | dSP; |
853 | |
1808 | |
854 | prepare_transfer (&ta, prev, next, flags); |
1809 | ENTER; |
855 | TRANSFER (ta); |
1810 | SAVETMPS; |
856 | } |
|
|
857 | |
1811 | |
858 | /** Coro ********************************************************************/ |
1812 | PUSHMARK (SP); |
|
|
1813 | PUTBACK; |
|
|
1814 | call_sv (coro_readyhook, G_VOID | G_DISCARD); |
859 | |
1815 | |
860 | #define PRIO_MAX 3 |
1816 | FREETMPS; |
861 | #define PRIO_HIGH 1 |
1817 | LEAVE; |
862 | #define PRIO_NORMAL 0 |
|
|
863 | #define PRIO_LOW -1 |
|
|
864 | #define PRIO_IDLE -3 |
|
|
865 | #define PRIO_MIN -4 |
|
|
866 | |
|
|
867 | /* for Coro.pm */ |
|
|
868 | static GV *coro_current, *coro_idle; |
|
|
869 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
870 | static int coro_nready; |
|
|
871 | |
|
|
872 | static void |
|
|
873 | coro_enq (SV *coro_sv) |
|
|
874 | { |
|
|
875 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
|
|
876 | coro_nready++; |
|
|
877 | } |
|
|
878 | |
|
|
879 | static SV * |
|
|
880 | coro_deq (int min_prio) |
|
|
881 | { |
|
|
882 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
883 | |
|
|
884 | min_prio -= PRIO_MIN; |
|
|
885 | if (min_prio < 0) |
|
|
886 | min_prio = 0; |
|
|
887 | |
|
|
888 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
889 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
890 | { |
|
|
891 | coro_nready--; |
|
|
892 | return av_shift (coro_ready [prio]); |
|
|
893 | } |
|
|
894 | |
|
|
895 | return 0; |
|
|
896 | } |
1818 | } |
897 | |
1819 | |
898 | static int |
1820 | static int |
899 | api_ready (SV *coro_sv) |
1821 | api_ready (pTHX_ SV *coro_sv) |
900 | { |
1822 | { |
901 | struct coro *coro; |
|
|
902 | |
|
|
903 | if (SvROK (coro_sv)) |
|
|
904 | coro_sv = SvRV (coro_sv); |
|
|
905 | |
|
|
906 | coro = SvSTATE (coro_sv); |
1823 | struct coro *coro = SvSTATE (coro_sv); |
907 | |
1824 | |
908 | if (coro->flags & CF_READY) |
1825 | if (coro->flags & CF_READY) |
909 | return 0; |
1826 | return 0; |
910 | |
1827 | |
|
|
1828 | coro->flags |= CF_READY; |
|
|
1829 | |
|
|
1830 | coro_enq (aTHX_ coro); |
|
|
1831 | |
|
|
1832 | if (!coro_nready++) |
|
|
1833 | if (coroapi.readyhook) |
|
|
1834 | coroapi.readyhook (); |
|
|
1835 | |
|
|
1836 | return 1; |
|
|
1837 | } |
|
|
1838 | |
|
|
1839 | static int |
|
|
1840 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1841 | { |
|
|
1842 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1843 | } |
|
|
1844 | |
|
|
1845 | /* expects to own a reference to next->hv */ |
|
|
1846 | INLINE void |
|
|
1847 | prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
|
|
1848 | { |
|
|
1849 | SV *prev_sv = SvRV (coro_current); |
|
|
1850 | |
|
|
1851 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1852 | ta->next = next; |
|
|
1853 | |
|
|
1854 | TRANSFER_CHECK (*ta); |
|
|
1855 | |
|
|
1856 | SvRV_set (coro_current, (SV *)next->hv); |
|
|
1857 | |
|
|
1858 | free_coro_mortal (aTHX); |
|
|
1859 | coro_mortal = prev_sv; |
|
|
1860 | } |
|
|
1861 | |
|
|
1862 | static void |
|
|
1863 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1864 | { |
|
|
1865 | for (;;) |
|
|
1866 | { |
|
|
1867 | struct coro *next = coro_deq (aTHX); |
|
|
1868 | |
|
|
1869 | if (expect_true (next)) |
|
|
1870 | { |
|
|
1871 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1872 | if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED))) |
|
|
1873 | SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ |
|
|
1874 | else |
|
|
1875 | { |
|
|
1876 | next->flags &= ~CF_READY; |
|
|
1877 | --coro_nready; |
|
|
1878 | |
|
|
1879 | prepare_schedule_to (aTHX_ ta, next); |
|
|
1880 | break; |
|
|
1881 | } |
|
|
1882 | } |
|
|
1883 | else |
|
|
1884 | { |
|
|
1885 | /* nothing to schedule: call the idle handler */ |
|
|
1886 | if (SvROK (sv_idle) |
|
|
1887 | && SvOBJECT (SvRV (sv_idle))) |
|
|
1888 | { |
|
|
1889 | if (SvRV (sv_idle) == SvRV (coro_current)) |
|
|
1890 | croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught"); |
|
|
1891 | |
|
|
1892 | ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ |
|
|
1893 | api_ready (aTHX_ SvRV (sv_idle)); |
|
|
1894 | --coro_nready; |
|
|
1895 | } |
|
|
1896 | else |
|
|
1897 | { |
|
|
1898 | /* TODO: deprecated, remove, cannot work reliably *//*D*/ |
|
|
1899 | dSP; |
|
|
1900 | |
|
|
1901 | ENTER; |
|
|
1902 | SAVETMPS; |
|
|
1903 | |
|
|
1904 | PUSHMARK (SP); |
|
|
1905 | PUTBACK; |
|
|
1906 | call_sv (sv_idle, G_VOID | G_DISCARD); |
|
|
1907 | |
|
|
1908 | FREETMPS; |
|
|
1909 | LEAVE; |
|
|
1910 | } |
|
|
1911 | } |
|
|
1912 | } |
|
|
1913 | } |
|
|
1914 | |
|
|
1915 | INLINE void |
|
|
1916 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1917 | { |
|
|
1918 | api_ready (aTHX_ coro_current); |
|
|
1919 | prepare_schedule (aTHX_ ta); |
|
|
1920 | } |
|
|
1921 | |
|
|
1922 | INLINE void |
|
|
1923 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1924 | { |
|
|
1925 | SV *prev = SvRV (coro_current); |
|
|
1926 | |
|
|
1927 | if (coro_nready) |
|
|
1928 | { |
|
|
1929 | prepare_schedule (aTHX_ ta); |
|
|
1930 | api_ready (aTHX_ prev); |
|
|
1931 | } |
|
|
1932 | else |
|
|
1933 | prepare_nop (aTHX_ ta); |
|
|
1934 | } |
|
|
1935 | |
|
|
1936 | static void |
|
|
1937 | api_schedule (pTHX) |
|
|
1938 | { |
|
|
1939 | struct coro_transfer_args ta; |
|
|
1940 | |
|
|
1941 | prepare_schedule (aTHX_ &ta); |
|
|
1942 | TRANSFER (ta, 1); |
|
|
1943 | } |
|
|
1944 | |
|
|
1945 | static void |
|
|
1946 | api_schedule_to (pTHX_ SV *coro_sv) |
|
|
1947 | { |
|
|
1948 | struct coro_transfer_args ta; |
|
|
1949 | struct coro *next = SvSTATE (coro_sv); |
|
|
1950 | |
|
|
1951 | SvREFCNT_inc_NN (coro_sv); |
|
|
1952 | prepare_schedule_to (aTHX_ &ta, next); |
|
|
1953 | } |
|
|
1954 | |
|
|
1955 | static int |
|
|
1956 | api_cede (pTHX) |
|
|
1957 | { |
|
|
1958 | struct coro_transfer_args ta; |
|
|
1959 | |
|
|
1960 | prepare_cede (aTHX_ &ta); |
|
|
1961 | |
|
|
1962 | if (expect_true (ta.prev != ta.next)) |
|
|
1963 | { |
|
|
1964 | TRANSFER (ta, 1); |
|
|
1965 | return 1; |
|
|
1966 | } |
|
|
1967 | else |
|
|
1968 | return 0; |
|
|
1969 | } |
|
|
1970 | |
|
|
1971 | static int |
|
|
1972 | api_cede_notself (pTHX) |
|
|
1973 | { |
|
|
1974 | if (coro_nready) |
|
|
1975 | { |
|
|
1976 | struct coro_transfer_args ta; |
|
|
1977 | |
|
|
1978 | prepare_cede_notself (aTHX_ &ta); |
|
|
1979 | TRANSFER (ta, 1); |
|
|
1980 | return 1; |
|
|
1981 | } |
|
|
1982 | else |
|
|
1983 | return 0; |
|
|
1984 | } |
|
|
1985 | |
|
|
1986 | static void |
|
|
1987 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1988 | { |
|
|
1989 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1990 | |
911 | if (coro->flags & CF_RUNNING) |
1991 | if (coro->flags & CF_RUNNING) |
912 | croak ("Coro::ready called on currently running coroutine"); |
1992 | croak ("cannot enable tracing on a running coroutine, caught"); |
913 | |
1993 | |
914 | coro->flags |= CF_READY; |
1994 | if (flags & CC_TRACE) |
|
|
1995 | { |
|
|
1996 | if (!coro->cctx) |
|
|
1997 | coro->cctx = cctx_new_run (); |
|
|
1998 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1999 | croak ("cannot enable tracing on coroutine with custom stack, caught"); |
915 | |
2000 | |
916 | LOCK; |
2001 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
917 | coro_enq (SvREFCNT_inc (coro_sv)); |
2002 | } |
918 | UNLOCK; |
2003 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
2004 | { |
|
|
2005 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
2006 | |
|
|
2007 | if (coro->flags & CF_RUNNING) |
|
|
2008 | PL_runops = RUNOPS_DEFAULT; |
|
|
2009 | else |
|
|
2010 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
2011 | } |
|
|
2012 | } |
|
|
2013 | |
|
|
2014 | static void |
|
|
2015 | coro_call_on_destroy (pTHX_ struct coro *coro) |
|
|
2016 | { |
|
|
2017 | SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); |
|
|
2018 | |
|
|
2019 | if (on_destroyp) |
|
|
2020 | { |
|
|
2021 | SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0); |
|
|
2022 | AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp))); |
|
|
2023 | AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0; |
|
|
2024 | |
|
|
2025 | while (AvFILLp (on_destroy) >= 0) |
|
|
2026 | { |
|
|
2027 | dSP; /* don't disturb outer sp */ |
|
|
2028 | SV *cb = av_pop (on_destroy); |
|
|
2029 | |
|
|
2030 | PUSHMARK (SP); |
|
|
2031 | |
|
|
2032 | if (statusp) |
|
|
2033 | { |
|
|
2034 | int i; |
|
|
2035 | EXTEND (SP, AvFILLp (status) + 1); |
|
|
2036 | |
|
|
2037 | for (i = 0; i <= AvFILLp (status); ++i) |
|
|
2038 | PUSHs (AvARRAY (status)[i]); |
|
|
2039 | } |
|
|
2040 | |
|
|
2041 | PUTBACK; |
|
|
2042 | call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); |
|
|
2043 | } |
|
|
2044 | } |
|
|
2045 | } |
|
|
2046 | |
|
|
2047 | static void |
|
|
2048 | coro_set_status (pTHX_ HV *coro_hv, SV **arg, int items) |
|
|
2049 | { |
|
|
2050 | AV *av = newAV (); |
|
|
2051 | |
|
|
2052 | /* items are actually not so common, so optimise for this case */ |
|
|
2053 | if (items) |
|
|
2054 | { |
|
|
2055 | int i; |
|
|
2056 | |
|
|
2057 | av_extend (av, items - 1); |
|
|
2058 | |
|
|
2059 | for (i = 0; i < items; ++i) |
|
|
2060 | av_push (av, SvREFCNT_inc_NN (arg [i])); |
|
|
2061 | } |
|
|
2062 | |
|
|
2063 | hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); |
|
|
2064 | } |
|
|
2065 | |
|
|
2066 | static void |
|
|
2067 | slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv) |
|
|
2068 | { |
|
|
2069 | av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */ |
|
|
2070 | api_ready (aTHX_ sv_manager); |
|
|
2071 | |
|
|
2072 | frame->prepare = prepare_schedule; |
|
|
2073 | frame->check = slf_check_repeat; |
|
|
2074 | |
|
|
2075 | /* as a minor optimisation, we could unwind all stacks here */ |
|
|
2076 | /* but that puts extra pressure on pp_slf, and is not worth much */ |
|
|
2077 | /*coro_unwind_stacks (aTHX);*/ |
|
|
2078 | } |
|
|
2079 | |
|
|
2080 | static void |
|
|
2081 | slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2082 | { |
|
|
2083 | HV *coro_hv = (HV *)SvRV (coro_current); |
|
|
2084 | |
|
|
2085 | coro_set_status (aTHX_ coro_hv, arg, items); |
|
|
2086 | slf_init_terminate_cancel_common (aTHX_ frame, coro_hv); |
|
|
2087 | } |
|
|
2088 | |
|
|
2089 | static void |
|
|
2090 | slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2091 | { |
|
|
2092 | HV *coro_hv; |
|
|
2093 | struct coro *coro; |
|
|
2094 | |
|
|
2095 | if (items <= 0) |
|
|
2096 | croak ("Coro::cancel called without coro object,"); |
|
|
2097 | |
|
|
2098 | coro = SvSTATE (arg [0]); |
|
|
2099 | coro_hv = coro->hv; |
|
|
2100 | |
|
|
2101 | coro_set_status (aTHX_ coro_hv, arg + 1, items - 1); |
|
|
2102 | |
|
|
2103 | if (expect_false (coro->flags & CF_NOCANCEL)) |
|
|
2104 | { |
|
|
2105 | /* coro currently busy cancelling something, so just notify it */ |
|
|
2106 | coro->slf_frame.data = (void *)coro; |
|
|
2107 | |
|
|
2108 | frame->prepare = prepare_nop; |
|
|
2109 | frame->check = slf_check_nop; |
|
|
2110 | } |
|
|
2111 | else if (coro_hv == (HV *)SvRV (coro_current)) |
|
|
2112 | { |
|
|
2113 | /* cancelling the current coro is allowed, and equals terminate */ |
|
|
2114 | slf_init_terminate_cancel_common (aTHX_ frame, coro_hv); |
|
|
2115 | } |
|
|
2116 | else |
|
|
2117 | { |
|
|
2118 | struct coro *self = SvSTATE_current; |
|
|
2119 | |
|
|
2120 | /* otherwise we cancel directly, purely for speed reasons |
|
|
2121 | * unfortunately, this requires some magic trickery, as |
|
|
2122 | * somebody else could cancel us, so we have to fight the cancellation. |
|
|
2123 | * this is ugly, and hopefully fully worth the extra speed. |
|
|
2124 | * besides, I can't get the slow-but-safe version working... |
|
|
2125 | */ |
|
|
2126 | slf_frame.data = 0; |
|
|
2127 | self->flags |= CF_NOCANCEL; |
|
|
2128 | |
|
|
2129 | coro_state_destroy (aTHX_ coro); |
|
|
2130 | coro_call_on_destroy (aTHX_ coro); |
|
|
2131 | |
|
|
2132 | self->flags &= ~CF_NOCANCEL; |
|
|
2133 | |
|
|
2134 | if (slf_frame.data) |
|
|
2135 | { |
|
|
2136 | /* while we were busy we have been cancelled, so terminate */ |
|
|
2137 | slf_init_terminate_cancel_common (aTHX_ frame, self->hv); |
|
|
2138 | } |
|
|
2139 | else |
|
|
2140 | { |
|
|
2141 | frame->prepare = prepare_nop; |
|
|
2142 | frame->check = slf_check_nop; |
|
|
2143 | } |
|
|
2144 | } |
|
|
2145 | } |
|
|
2146 | |
|
|
2147 | static int |
|
|
2148 | slf_check_safe_cancel (pTHX_ struct CoroSLF *frame) |
|
|
2149 | { |
|
|
2150 | frame->prepare = 0; |
|
|
2151 | coro_unwind_stacks (aTHX); |
|
|
2152 | |
|
|
2153 | slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current)); |
919 | |
2154 | |
920 | return 1; |
2155 | return 1; |
921 | } |
2156 | } |
922 | |
2157 | |
923 | static int |
2158 | static int |
924 | api_is_ready (SV *coro_sv) |
2159 | safe_cancel (pTHX_ struct coro *coro, SV **arg, int items) |
925 | { |
2160 | { |
926 | return !!SvSTATE (coro_sv)->flags & CF_READY; |
2161 | if (coro->cctx) |
927 | } |
2162 | croak ("coro inside C callback, unable to cancel at this time, caught"); |
928 | |
2163 | |
929 | static void |
2164 | if (coro->flags & CF_NEW) |
930 | prepare_schedule (struct transfer_args *ta) |
2165 | { |
931 | { |
2166 | coro_set_status (aTHX_ coro->hv, arg, items); |
932 | SV *current, *prev, *next; |
2167 | coro_state_destroy (aTHX_ coro); |
933 | |
2168 | coro_call_on_destroy (aTHX_ coro); |
934 | current = GvSV (coro_current); |
|
|
935 | |
|
|
936 | for (;;) |
|
|
937 | { |
2169 | } |
938 | LOCK; |
2170 | else |
939 | next = coro_deq (PRIO_MIN); |
2171 | { |
940 | UNLOCK; |
2172 | if (!coro->slf_frame.prepare) |
|
|
2173 | croak ("coro outside an SLF function, unable to cancel at this time, caught"); |
941 | |
2174 | |
942 | if (next) |
2175 | slf_destroy (aTHX_ coro); |
943 | break; |
2176 | |
|
|
2177 | coro_set_status (aTHX_ coro->hv, arg, items); |
|
|
2178 | coro->slf_frame.prepare = prepare_nop; |
|
|
2179 | coro->slf_frame.check = slf_check_safe_cancel; |
|
|
2180 | |
|
|
2181 | api_ready (aTHX_ coro->hv); |
|
|
2182 | } |
|
|
2183 | |
|
|
2184 | return 1; |
|
|
2185 | } |
|
|
2186 | |
|
|
2187 | /*****************************************************************************/ |
|
|
2188 | /* async pool handler */ |
|
|
2189 | |
|
|
2190 | static int |
|
|
2191 | slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
|
|
2192 | { |
|
|
2193 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2194 | struct coro *coro = (struct coro *)frame->data; |
|
|
2195 | |
|
|
2196 | if (!coro->invoke_cb) |
|
|
2197 | return 1; /* loop till we have invoke */ |
|
|
2198 | else |
|
|
2199 | { |
|
|
2200 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2201 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2202 | |
|
|
2203 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
944 | |
2204 | |
945 | { |
2205 | { |
946 | dSP; |
2206 | dSP; |
947 | |
2207 | XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
948 | ENTER; |
|
|
949 | SAVETMPS; |
|
|
950 | |
|
|
951 | PUSHMARK (SP); |
|
|
952 | PUTBACK; |
2208 | PUTBACK; |
953 | call_sv (GvSV (coro_idle), G_DISCARD); |
|
|
954 | |
|
|
955 | FREETMPS; |
|
|
956 | LEAVE; |
|
|
957 | } |
2209 | } |
|
|
2210 | |
|
|
2211 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
2212 | GvAV (PL_defgv) = coro->invoke_av; |
|
|
2213 | coro->invoke_av = 0; |
|
|
2214 | |
|
|
2215 | return 0; |
|
|
2216 | } |
|
|
2217 | } |
|
|
2218 | |
|
|
2219 | static void |
|
|
2220 | slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2221 | { |
|
|
2222 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2223 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2224 | |
|
|
2225 | if (expect_true (coro->saved_deffh)) |
958 | } |
2226 | { |
|
|
2227 | /* subsequent iteration */ |
|
|
2228 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2229 | coro->saved_deffh = 0; |
959 | |
2230 | |
960 | prev = SvRV (current); |
2231 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
961 | SvRV (current) = next; |
2232 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2233 | { |
|
|
2234 | slf_init_terminate_cancel_common (aTHX_ frame, hv); |
|
|
2235 | return; |
|
|
2236 | } |
|
|
2237 | else |
|
|
2238 | { |
|
|
2239 | av_clear (GvAV (PL_defgv)); |
|
|
2240 | hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
962 | |
2241 | |
963 | /* free this only after the transfer */ |
2242 | coro->prio = 0; |
964 | LOCK; |
|
|
965 | free_coro_mortal (); |
|
|
966 | UNLOCK; |
|
|
967 | coro_mortal = prev; |
|
|
968 | |
2243 | |
969 | ta->prev = SvSTATE (prev); |
2244 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
970 | ta->next = SvSTATE (next); |
2245 | api_trace (aTHX_ coro_current, 0); |
971 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
972 | |
2246 | |
973 | ta->next->flags &= ~CF_READY; |
2247 | frame->prepare = prepare_schedule; |
974 | } |
2248 | av_push (av_async_pool, SvREFCNT_inc (hv)); |
|
|
2249 | } |
|
|
2250 | } |
|
|
2251 | else |
|
|
2252 | { |
|
|
2253 | /* first iteration, simply fall through */ |
|
|
2254 | frame->prepare = prepare_nop; |
|
|
2255 | } |
975 | |
2256 | |
|
|
2257 | frame->check = slf_check_pool_handler; |
|
|
2258 | frame->data = (void *)coro; |
|
|
2259 | } |
|
|
2260 | |
|
|
2261 | /*****************************************************************************/ |
|
|
2262 | /* rouse callback */ |
|
|
2263 | |
|
|
2264 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
2265 | |
|
|
2266 | static void |
|
|
2267 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
2268 | { |
|
|
2269 | dXSARGS; |
|
|
2270 | SV *data = (SV *)S_GENSUB_ARG; |
|
|
2271 | |
|
|
2272 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
2273 | { |
|
|
2274 | /* first call, set args */ |
|
|
2275 | SV *coro = SvRV (data); |
|
|
2276 | AV *av = newAV (); |
|
|
2277 | |
|
|
2278 | SvRV_set (data, (SV *)av); |
|
|
2279 | |
|
|
2280 | /* better take a full copy of the arguments */ |
|
|
2281 | while (items--) |
|
|
2282 | av_store (av, items, newSVsv (ST (items))); |
|
|
2283 | |
|
|
2284 | api_ready (aTHX_ coro); |
|
|
2285 | SvREFCNT_dec (coro); |
|
|
2286 | } |
|
|
2287 | |
|
|
2288 | XSRETURN_EMPTY; |
|
|
2289 | } |
|
|
2290 | |
976 | static void |
2291 | static int |
|
|
2292 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
2293 | { |
|
|
2294 | SV *data = (SV *)frame->data; |
|
|
2295 | |
|
|
2296 | if (CORO_THROW) |
|
|
2297 | return 0; |
|
|
2298 | |
|
|
2299 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
2300 | return 1; |
|
|
2301 | |
|
|
2302 | /* now push all results on the stack */ |
|
|
2303 | { |
|
|
2304 | dSP; |
|
|
2305 | AV *av = (AV *)SvRV (data); |
|
|
2306 | int i; |
|
|
2307 | |
|
|
2308 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
2309 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
2310 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
2311 | |
|
|
2312 | /* we have stolen the elements, so set length to zero and free */ |
|
|
2313 | AvFILLp (av) = -1; |
|
|
2314 | av_undef (av); |
|
|
2315 | |
|
|
2316 | PUTBACK; |
|
|
2317 | } |
|
|
2318 | |
|
|
2319 | return 0; |
|
|
2320 | } |
|
|
2321 | |
|
|
2322 | static void |
|
|
2323 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2324 | { |
|
|
2325 | SV *cb; |
|
|
2326 | |
|
|
2327 | if (items) |
|
|
2328 | cb = arg [0]; |
|
|
2329 | else |
|
|
2330 | { |
|
|
2331 | struct coro *coro = SvSTATE_current; |
|
|
2332 | |
|
|
2333 | if (!coro->rouse_cb) |
|
|
2334 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
2335 | |
|
|
2336 | cb = sv_2mortal (coro->rouse_cb); |
|
|
2337 | coro->rouse_cb = 0; |
|
|
2338 | } |
|
|
2339 | |
|
|
2340 | if (!SvROK (cb) |
|
|
2341 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
2342 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
2343 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
2344 | |
|
|
2345 | { |
|
|
2346 | CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ |
|
|
2347 | SV *data = (SV *)S_GENSUB_ARG; |
|
|
2348 | |
|
|
2349 | frame->data = (void *)data; |
|
|
2350 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
2351 | frame->check = slf_check_rouse_wait; |
|
|
2352 | } |
|
|
2353 | } |
|
|
2354 | |
|
|
2355 | static SV * |
|
|
2356 | coro_new_rouse_cb (pTHX) |
|
|
2357 | { |
|
|
2358 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2359 | struct coro *coro = SvSTATE_hv (hv); |
|
|
2360 | SV *data = newRV_inc ((SV *)hv); |
|
|
2361 | SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data); |
|
|
2362 | |
|
|
2363 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
|
|
2364 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
|
|
2365 | |
|
|
2366 | SvREFCNT_dec (coro->rouse_cb); |
|
|
2367 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
2368 | |
|
|
2369 | return cb; |
|
|
2370 | } |
|
|
2371 | |
|
|
2372 | /*****************************************************************************/ |
|
|
2373 | /* schedule-like-function opcode (SLF) */ |
|
|
2374 | |
|
|
2375 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
2376 | static const CV *slf_cv; |
|
|
2377 | static SV **slf_argv; |
|
|
2378 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
2379 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
2380 | |
|
|
2381 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
2382 | /* recreate the stack frame as perl will on following calls */ |
|
|
2383 | /* since entersub cleared the stack */ |
|
|
2384 | static OP * |
|
|
2385 | pp_restore (pTHX) |
|
|
2386 | { |
|
|
2387 | int i; |
|
|
2388 | SV **SP = PL_stack_base + slf_ax; |
|
|
2389 | |
|
|
2390 | PUSHMARK (SP); |
|
|
2391 | |
|
|
2392 | EXTEND (SP, slf_argc + 1); |
|
|
2393 | |
|
|
2394 | for (i = 0; i < slf_argc; ++i) |
|
|
2395 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
2396 | |
|
|
2397 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
2398 | |
|
|
2399 | RETURNOP (slf_restore.op_first); |
|
|
2400 | } |
|
|
2401 | |
|
|
2402 | static void |
|
|
2403 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
2404 | { |
|
|
2405 | SV **arg = (SV **)slf_frame.data; |
|
|
2406 | |
|
|
2407 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
2408 | } |
|
|
2409 | |
|
|
2410 | static void |
|
|
2411 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2412 | { |
|
|
2413 | if (items != 2) |
|
|
2414 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
2415 | |
|
|
2416 | frame->prepare = slf_prepare_transfer; |
|
|
2417 | frame->check = slf_check_nop; |
|
|
2418 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
2419 | } |
|
|
2420 | |
|
|
2421 | static void |
|
|
2422 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2423 | { |
|
|
2424 | frame->prepare = prepare_schedule; |
|
|
2425 | frame->check = slf_check_nop; |
|
|
2426 | } |
|
|
2427 | |
|
|
2428 | static void |
977 | prepare_cede (struct transfer_args *ta) |
2429 | slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta) |
978 | { |
2430 | { |
|
|
2431 | struct coro *next = (struct coro *)slf_frame.data; |
|
|
2432 | |
|
|
2433 | SvREFCNT_inc_NN (next->hv); |
|
|
2434 | prepare_schedule_to (aTHX_ ta, next); |
|
|
2435 | } |
|
|
2436 | |
|
|
2437 | static void |
|
|
2438 | slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2439 | { |
|
|
2440 | if (!items) |
|
|
2441 | croak ("Coro::schedule_to expects a coroutine argument, caught"); |
|
|
2442 | |
|
|
2443 | frame->data = (void *)SvSTATE (arg [0]); |
|
|
2444 | frame->prepare = slf_prepare_schedule_to; |
|
|
2445 | frame->check = slf_check_nop; |
|
|
2446 | } |
|
|
2447 | |
|
|
2448 | static void |
|
|
2449 | slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2450 | { |
979 | api_ready (GvSV (coro_current)); |
2451 | api_ready (aTHX_ SvRV (coro_current)); |
980 | |
2452 | |
981 | prepare_schedule (ta); |
2453 | slf_init_schedule_to (aTHX_ frame, cv, arg, items); |
982 | } |
2454 | } |
983 | |
2455 | |
984 | static void |
2456 | static void |
985 | api_schedule (void) |
2457 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
986 | { |
2458 | { |
987 | dTHX; |
2459 | frame->prepare = prepare_cede; |
|
|
2460 | frame->check = slf_check_nop; |
|
|
2461 | } |
|
|
2462 | |
|
|
2463 | static void |
|
|
2464 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2465 | { |
|
|
2466 | frame->prepare = prepare_cede_notself; |
|
|
2467 | frame->check = slf_check_nop; |
|
|
2468 | } |
|
|
2469 | |
|
|
2470 | /* "undo"/cancel a running slf call - used when cancelling a coro, mainly */ |
|
|
2471 | static void |
|
|
2472 | slf_destroy (pTHX_ struct coro *coro) |
|
|
2473 | { |
|
|
2474 | /* this callback is reserved for slf functions needing to do cleanup */ |
|
|
2475 | if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty) |
|
|
2476 | coro->slf_frame.destroy (aTHX_ coro); |
|
|
2477 | |
|
|
2478 | /* |
|
|
2479 | * The on_destroy above most likely is from an SLF call. |
|
|
2480 | * Since by definition the SLF call will not finish when we destroy |
|
|
2481 | * the coro, we will have to force-finish it here, otherwise |
|
|
2482 | * cleanup functions cannot call SLF functions. |
|
|
2483 | */ |
|
|
2484 | coro->slf_frame.prepare = 0; |
|
|
2485 | } |
|
|
2486 | |
|
|
2487 | /* |
|
|
2488 | * these not obviously related functions are all rolled into one |
|
|
2489 | * function to increase chances that they all will call transfer with the same |
|
|
2490 | * stack offset |
|
|
2491 | * SLF stands for "schedule-like-function". |
|
|
2492 | */ |
|
|
2493 | static OP * |
|
|
2494 | pp_slf (pTHX) |
|
|
2495 | { |
|
|
2496 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
2497 | |
|
|
2498 | /* set up the slf frame, unless it has already been set-up */ |
|
|
2499 | /* the latter happens when a new coro has been started */ |
|
|
2500 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
2501 | if (expect_true (!slf_frame.prepare)) |
|
|
2502 | { |
|
|
2503 | /* first iteration */ |
|
|
2504 | dSP; |
|
|
2505 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
2506 | int items = SP - arg; /* args without function object */ |
|
|
2507 | SV *gv = *sp; |
|
|
2508 | |
|
|
2509 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
2510 | /* for us, divert to the real entersub */ |
|
|
2511 | if (SvTYPE (gv) != SVt_PVGV |
|
|
2512 | || !GvCV (gv) |
|
|
2513 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
2514 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
2515 | |
|
|
2516 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
2517 | { |
|
|
2518 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
2519 | AV *av = GvAV (PL_defgv); |
|
|
2520 | arg = AvARRAY (av); |
|
|
2521 | items = AvFILLp (av) + 1; |
|
|
2522 | } |
|
|
2523 | |
|
|
2524 | /* now call the init function, which needs to set up slf_frame */ |
|
|
2525 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
2526 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
2527 | |
|
|
2528 | /* pop args */ |
|
|
2529 | SP = PL_stack_base + POPMARK; |
|
|
2530 | |
|
|
2531 | PUTBACK; |
|
|
2532 | } |
|
|
2533 | |
|
|
2534 | /* now that we have a slf_frame, interpret it! */ |
|
|
2535 | /* we use a callback system not to make the code needlessly */ |
|
|
2536 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
2537 | |
|
|
2538 | do |
|
|
2539 | { |
988 | struct transfer_args ta; |
2540 | struct coro_transfer_args ta; |
989 | |
2541 | |
990 | prepare_schedule (&ta); |
2542 | slf_frame.prepare (aTHX_ &ta); |
991 | TRANSFER (ta); |
2543 | TRANSFER (ta, 0); |
992 | } |
|
|
993 | |
2544 | |
|
|
2545 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
2546 | } |
|
|
2547 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
2548 | |
|
|
2549 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
2550 | |
|
|
2551 | /* exception handling */ |
|
|
2552 | if (expect_false (CORO_THROW)) |
|
|
2553 | { |
|
|
2554 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
2555 | |
|
|
2556 | CORO_THROW = 0; |
|
|
2557 | sv_setsv (ERRSV, exception); |
|
|
2558 | croak (0); |
|
|
2559 | } |
|
|
2560 | |
|
|
2561 | /* return value handling - mostly like entersub */ |
|
|
2562 | /* make sure we put something on the stack in scalar context */ |
|
|
2563 | if (GIMME_V == G_SCALAR) |
|
|
2564 | { |
|
|
2565 | dSP; |
|
|
2566 | SV **bot = PL_stack_base + checkmark; |
|
|
2567 | |
|
|
2568 | if (sp == bot) /* too few, push undef */ |
|
|
2569 | bot [1] = &PL_sv_undef; |
|
|
2570 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
2571 | bot [1] = *sp; |
|
|
2572 | |
|
|
2573 | SP = bot + 1; |
|
|
2574 | |
|
|
2575 | PUTBACK; |
|
|
2576 | } |
|
|
2577 | |
|
|
2578 | return NORMAL; |
|
|
2579 | } |
|
|
2580 | |
|
|
2581 | static void |
|
|
2582 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2583 | { |
|
|
2584 | int i; |
|
|
2585 | SV **arg = PL_stack_base + ax; |
|
|
2586 | int items = PL_stack_sp - arg + 1; |
|
|
2587 | |
|
|
2588 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2589 | |
|
|
2590 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2591 | && PL_op->op_ppaddr != pp_slf) |
|
|
2592 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2593 | |
|
|
2594 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2595 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2596 | slf_cv = cv; |
|
|
2597 | |
|
|
2598 | /* we patch the op, and then re-run the whole call */ |
|
|
2599 | /* we have to put the same argument on the stack for this to work */ |
|
|
2600 | /* and this will be done by pp_restore */ |
|
|
2601 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2602 | slf_restore.op_type = OP_CUSTOM; |
|
|
2603 | slf_restore.op_ppaddr = pp_restore; |
|
|
2604 | slf_restore.op_first = PL_op; |
|
|
2605 | |
|
|
2606 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2607 | |
|
|
2608 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2609 | { |
|
|
2610 | if (items > slf_arga) |
|
|
2611 | { |
|
|
2612 | slf_arga = items; |
|
|
2613 | Safefree (slf_argv); |
|
|
2614 | New (0, slf_argv, slf_arga, SV *); |
|
|
2615 | } |
|
|
2616 | |
|
|
2617 | slf_argc = items; |
|
|
2618 | |
|
|
2619 | for (i = 0; i < items; ++i) |
|
|
2620 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2621 | } |
|
|
2622 | else |
|
|
2623 | slf_argc = 0; |
|
|
2624 | |
|
|
2625 | PL_op->op_ppaddr = pp_slf; |
|
|
2626 | /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ |
|
|
2627 | |
|
|
2628 | PL_op = (OP *)&slf_restore; |
|
|
2629 | } |
|
|
2630 | |
|
|
2631 | /*****************************************************************************/ |
|
|
2632 | /* dynamic wind */ |
|
|
2633 | |
|
|
2634 | static void |
|
|
2635 | on_enterleave_call (pTHX_ SV *cb) |
|
|
2636 | { |
|
|
2637 | dSP; |
|
|
2638 | |
|
|
2639 | PUSHSTACK; |
|
|
2640 | |
|
|
2641 | PUSHMARK (SP); |
|
|
2642 | PUTBACK; |
|
|
2643 | call_sv (cb, G_VOID | G_DISCARD); |
|
|
2644 | SPAGAIN; |
|
|
2645 | |
|
|
2646 | POPSTACK; |
|
|
2647 | } |
|
|
2648 | |
|
|
2649 | static SV * |
|
|
2650 | coro_avp_pop_and_free (pTHX_ AV **avp) |
|
|
2651 | { |
|
|
2652 | AV *av = *avp; |
|
|
2653 | SV *res = av_pop (av); |
|
|
2654 | |
|
|
2655 | if (AvFILLp (av) < 0) |
|
|
2656 | { |
|
|
2657 | *avp = 0; |
|
|
2658 | SvREFCNT_dec (av); |
|
|
2659 | } |
|
|
2660 | |
|
|
2661 | return res; |
|
|
2662 | } |
|
|
2663 | |
|
|
2664 | static void |
|
|
2665 | coro_pop_on_enter (pTHX_ void *coro) |
|
|
2666 | { |
|
|
2667 | SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter); |
|
|
2668 | SvREFCNT_dec (cb); |
|
|
2669 | } |
|
|
2670 | |
|
|
2671 | static void |
|
|
2672 | coro_pop_on_leave (pTHX_ void *coro) |
|
|
2673 | { |
|
|
2674 | SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); |
|
|
2675 | on_enterleave_call (aTHX_ sv_2mortal (cb)); |
|
|
2676 | } |
|
|
2677 | |
|
|
2678 | /*****************************************************************************/ |
|
|
2679 | /* PerlIO::cede */ |
|
|
2680 | |
|
|
2681 | typedef struct |
|
|
2682 | { |
|
|
2683 | PerlIOBuf base; |
|
|
2684 | NV next, every; |
|
|
2685 | } PerlIOCede; |
|
|
2686 | |
|
|
2687 | static IV |
|
|
2688 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
2689 | { |
|
|
2690 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2691 | |
|
|
2692 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
2693 | self->next = nvtime () + self->every; |
|
|
2694 | |
|
|
2695 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
2696 | } |
|
|
2697 | |
|
|
2698 | static SV * |
|
|
2699 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
2700 | { |
|
|
2701 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2702 | |
|
|
2703 | return newSVnv (self->every); |
|
|
2704 | } |
|
|
2705 | |
|
|
2706 | static IV |
|
|
2707 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
2708 | { |
|
|
2709 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2710 | double now = nvtime (); |
|
|
2711 | |
|
|
2712 | if (now >= self->next) |
|
|
2713 | { |
|
|
2714 | api_cede (aTHX); |
|
|
2715 | self->next = now + self->every; |
|
|
2716 | } |
|
|
2717 | |
|
|
2718 | return PerlIOBuf_flush (aTHX_ f); |
|
|
2719 | } |
|
|
2720 | |
|
|
2721 | static PerlIO_funcs PerlIO_cede = |
|
|
2722 | { |
|
|
2723 | sizeof(PerlIO_funcs), |
|
|
2724 | "cede", |
|
|
2725 | sizeof(PerlIOCede), |
|
|
2726 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
2727 | PerlIOCede_pushed, |
|
|
2728 | PerlIOBuf_popped, |
|
|
2729 | PerlIOBuf_open, |
|
|
2730 | PerlIOBase_binmode, |
|
|
2731 | PerlIOCede_getarg, |
|
|
2732 | PerlIOBase_fileno, |
|
|
2733 | PerlIOBuf_dup, |
|
|
2734 | PerlIOBuf_read, |
|
|
2735 | PerlIOBuf_unread, |
|
|
2736 | PerlIOBuf_write, |
|
|
2737 | PerlIOBuf_seek, |
|
|
2738 | PerlIOBuf_tell, |
|
|
2739 | PerlIOBuf_close, |
|
|
2740 | PerlIOCede_flush, |
|
|
2741 | PerlIOBuf_fill, |
|
|
2742 | PerlIOBase_eof, |
|
|
2743 | PerlIOBase_error, |
|
|
2744 | PerlIOBase_clearerr, |
|
|
2745 | PerlIOBase_setlinebuf, |
|
|
2746 | PerlIOBuf_get_base, |
|
|
2747 | PerlIOBuf_bufsiz, |
|
|
2748 | PerlIOBuf_get_ptr, |
|
|
2749 | PerlIOBuf_get_cnt, |
|
|
2750 | PerlIOBuf_set_ptrcnt, |
|
|
2751 | }; |
|
|
2752 | |
|
|
2753 | /*****************************************************************************/ |
|
|
2754 | /* Coro::Semaphore & Coro::Signal */ |
|
|
2755 | |
|
|
2756 | static SV * |
|
|
2757 | coro_waitarray_new (pTHX_ int count) |
|
|
2758 | { |
|
|
2759 | /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2760 | AV *av = newAV (); |
|
|
2761 | SV **ary; |
|
|
2762 | |
|
|
2763 | /* unfortunately, building manually saves memory */ |
|
|
2764 | Newx (ary, 2, SV *); |
|
|
2765 | AvALLOC (av) = ary; |
|
|
2766 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
2767 | AvARRAY (av) = ary; |
|
|
2768 | #else |
|
|
2769 | /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */ |
|
|
2770 | /* -DDEBUGGING flags this as a bug, despite it perfectly working */ |
|
|
2771 | SvPVX ((SV *)av) = (char *)ary; |
|
|
2772 | #endif |
|
|
2773 | AvMAX (av) = 1; |
|
|
2774 | AvFILLp (av) = 0; |
|
|
2775 | ary [0] = newSViv (count); |
|
|
2776 | |
|
|
2777 | return newRV_noinc ((SV *)av); |
|
|
2778 | } |
|
|
2779 | |
|
|
2780 | /* semaphore */ |
|
|
2781 | |
|
|
2782 | static void |
|
|
2783 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2784 | { |
|
|
2785 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2786 | IV count = SvIVX (count_sv); |
|
|
2787 | |
|
|
2788 | count += adjust; |
|
|
2789 | SvIVX (count_sv) = count; |
|
|
2790 | |
|
|
2791 | /* now wake up as many waiters as are expected to lock */ |
|
|
2792 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2793 | { |
|
|
2794 | SV *cb; |
|
|
2795 | |
|
|
2796 | /* swap first two elements so we can shift a waiter */ |
|
|
2797 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2798 | AvARRAY (av)[1] = count_sv; |
|
|
2799 | cb = av_shift (av); |
|
|
2800 | |
|
|
2801 | if (SvOBJECT (cb)) |
|
|
2802 | { |
|
|
2803 | api_ready (aTHX_ cb); |
|
|
2804 | --count; |
|
|
2805 | } |
|
|
2806 | else if (SvTYPE (cb) == SVt_PVCV) |
|
|
2807 | { |
|
|
2808 | dSP; |
|
|
2809 | PUSHMARK (SP); |
|
|
2810 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2811 | PUTBACK; |
|
|
2812 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2813 | } |
|
|
2814 | |
|
|
2815 | SvREFCNT_dec (cb); |
|
|
2816 | } |
|
|
2817 | } |
|
|
2818 | |
|
|
2819 | static void |
|
|
2820 | coro_semaphore_destroy (pTHX_ struct coro *coro) |
|
|
2821 | { |
|
|
2822 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2823 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2824 | } |
|
|
2825 | |
994 | static void |
2826 | static int |
995 | api_cede (void) |
2827 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
996 | { |
2828 | { |
997 | dTHX; |
2829 | AV *av = (AV *)frame->data; |
998 | struct transfer_args ta; |
2830 | SV *count_sv = AvARRAY (av)[0]; |
999 | |
2831 | |
1000 | prepare_cede (&ta); |
2832 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
1001 | TRANSFER (ta); |
2833 | if (CORO_THROW) |
1002 | } |
2834 | return 0; |
|
|
2835 | else if (SvIVX (count_sv) > 0) |
|
|
2836 | { |
|
|
2837 | frame->destroy = 0; |
1003 | |
2838 | |
|
|
2839 | if (acquire) |
|
|
2840 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2841 | else |
|
|
2842 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2843 | |
|
|
2844 | return 0; |
|
|
2845 | } |
|
|
2846 | else |
|
|
2847 | { |
|
|
2848 | int i; |
|
|
2849 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2850 | /* waiters list and only add us if we aren't in there already */ |
|
|
2851 | /* this avoids some degenerate memory usage cases */ |
|
|
2852 | |
|
|
2853 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2854 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2855 | return 1; |
|
|
2856 | |
|
|
2857 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2858 | return 1; |
|
|
2859 | } |
|
|
2860 | } |
|
|
2861 | |
|
|
2862 | static int |
|
|
2863 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2864 | { |
|
|
2865 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2866 | } |
|
|
2867 | |
|
|
2868 | static int |
|
|
2869 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2870 | { |
|
|
2871 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2872 | } |
|
|
2873 | |
|
|
2874 | static void |
|
|
2875 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2876 | { |
|
|
2877 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2878 | |
|
|
2879 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2880 | { |
|
|
2881 | frame->data = (void *)av; |
|
|
2882 | frame->prepare = prepare_nop; |
|
|
2883 | } |
|
|
2884 | else |
|
|
2885 | { |
|
|
2886 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2887 | |
|
|
2888 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2889 | frame->prepare = prepare_schedule; |
|
|
2890 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2891 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2892 | frame->destroy = coro_semaphore_destroy; |
|
|
2893 | } |
|
|
2894 | } |
|
|
2895 | |
|
|
2896 | static void |
|
|
2897 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2898 | { |
|
|
2899 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2900 | frame->check = slf_check_semaphore_down; |
|
|
2901 | } |
|
|
2902 | |
|
|
2903 | static void |
|
|
2904 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2905 | { |
|
|
2906 | if (items >= 2) |
|
|
2907 | { |
|
|
2908 | /* callback form */ |
|
|
2909 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2910 | SV *cb_cv = s_get_cv_croak (arg [1]); |
|
|
2911 | |
|
|
2912 | av_push (av, SvREFCNT_inc_NN (cb_cv)); |
|
|
2913 | |
|
|
2914 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2915 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2916 | |
|
|
2917 | frame->prepare = prepare_nop; |
|
|
2918 | frame->check = slf_check_nop; |
|
|
2919 | } |
|
|
2920 | else |
|
|
2921 | { |
|
|
2922 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2923 | frame->check = slf_check_semaphore_wait; |
|
|
2924 | } |
|
|
2925 | } |
|
|
2926 | |
|
|
2927 | /* signal */ |
|
|
2928 | |
|
|
2929 | static void |
|
|
2930 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
2931 | { |
|
|
2932 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2933 | |
|
|
2934 | /* now signal count waiters */ |
|
|
2935 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2936 | { |
|
|
2937 | SV *cb; |
|
|
2938 | |
|
|
2939 | /* swap first two elements so we can shift a waiter */ |
|
|
2940 | cb = AvARRAY (av)[0]; |
|
|
2941 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2942 | AvARRAY (av)[1] = cb; |
|
|
2943 | |
|
|
2944 | cb = av_shift (av); |
|
|
2945 | |
|
|
2946 | if (SvTYPE (cb) == SVt_PVCV) |
|
|
2947 | { |
|
|
2948 | dSP; |
|
|
2949 | PUSHMARK (SP); |
|
|
2950 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2951 | PUTBACK; |
|
|
2952 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2953 | } |
|
|
2954 | else |
|
|
2955 | { |
|
|
2956 | api_ready (aTHX_ cb); |
|
|
2957 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
2958 | } |
|
|
2959 | |
|
|
2960 | SvREFCNT_dec (cb); |
|
|
2961 | |
|
|
2962 | --count; |
|
|
2963 | } |
|
|
2964 | } |
|
|
2965 | |
|
|
2966 | static int |
|
|
2967 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
2968 | { |
|
|
2969 | /* if we are about to throw, also stop waiting */ |
|
|
2970 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
2971 | } |
|
|
2972 | |
|
|
2973 | static void |
|
|
2974 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2975 | { |
|
|
2976 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2977 | |
|
|
2978 | if (items >= 2) |
|
|
2979 | { |
|
|
2980 | SV *cb_cv = s_get_cv_croak (arg [1]); |
|
|
2981 | av_push (av, SvREFCNT_inc_NN (cb_cv)); |
|
|
2982 | |
|
|
2983 | if (SvIVX (AvARRAY (av)[0])) |
|
|
2984 | coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */ |
|
|
2985 | |
|
|
2986 | frame->prepare = prepare_nop; |
|
|
2987 | frame->check = slf_check_nop; |
|
|
2988 | } |
|
|
2989 | else if (SvIVX (AvARRAY (av)[0])) |
|
|
2990 | { |
|
|
2991 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2992 | frame->prepare = prepare_nop; |
|
|
2993 | frame->check = slf_check_nop; |
|
|
2994 | } |
|
|
2995 | else |
|
|
2996 | { |
|
|
2997 | SV *waiter = newSVsv (coro_current); /* owned by signal av */ |
|
|
2998 | |
|
|
2999 | av_push (av, waiter); |
|
|
3000 | |
|
|
3001 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
3002 | frame->prepare = prepare_schedule; |
|
|
3003 | frame->check = slf_check_signal_wait; |
|
|
3004 | } |
|
|
3005 | } |
|
|
3006 | |
|
|
3007 | /*****************************************************************************/ |
|
|
3008 | /* Coro::AIO */ |
|
|
3009 | |
|
|
3010 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
3011 | |
|
|
3012 | /* helper storage struct */ |
|
|
3013 | struct io_state |
|
|
3014 | { |
|
|
3015 | int errorno; |
|
|
3016 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
3017 | int laststatval; |
|
|
3018 | Stat_t statcache; |
|
|
3019 | }; |
|
|
3020 | |
|
|
3021 | static void |
|
|
3022 | coro_aio_callback (pTHX_ CV *cv) |
|
|
3023 | { |
|
|
3024 | dXSARGS; |
|
|
3025 | AV *state = (AV *)S_GENSUB_ARG; |
|
|
3026 | SV *coro = av_pop (state); |
|
|
3027 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
3028 | |
|
|
3029 | av_extend (state, items - 1); |
|
|
3030 | |
|
|
3031 | sv_upgrade (data_sv, SVt_PV); |
|
|
3032 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
3033 | SvPOK_only (data_sv); |
|
|
3034 | |
|
|
3035 | { |
|
|
3036 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
3037 | |
|
|
3038 | data->errorno = errno; |
|
|
3039 | data->laststype = PL_laststype; |
|
|
3040 | data->laststatval = PL_laststatval; |
|
|
3041 | data->statcache = PL_statcache; |
|
|
3042 | } |
|
|
3043 | |
|
|
3044 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
3045 | { |
|
|
3046 | int i; |
|
|
3047 | |
|
|
3048 | for (i = 0; i < items; ++i) |
|
|
3049 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
3050 | } |
|
|
3051 | |
|
|
3052 | av_push (state, data_sv); |
|
|
3053 | |
|
|
3054 | api_ready (aTHX_ coro); |
|
|
3055 | SvREFCNT_dec (coro); |
|
|
3056 | SvREFCNT_dec ((AV *)state); |
|
|
3057 | } |
|
|
3058 | |
|
|
3059 | static int |
|
|
3060 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
3061 | { |
|
|
3062 | AV *state = (AV *)frame->data; |
|
|
3063 | |
|
|
3064 | /* if we are about to throw, return early */ |
|
|
3065 | /* this does not cancel the aio request, but at least */ |
|
|
3066 | /* it quickly returns */ |
|
|
3067 | if (CORO_THROW) |
|
|
3068 | return 0; |
|
|
3069 | |
|
|
3070 | /* one element that is an RV? repeat! */ |
|
|
3071 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
3072 | return 1; |
|
|
3073 | |
|
|
3074 | /* restore status */ |
|
|
3075 | { |
|
|
3076 | SV *data_sv = av_pop (state); |
|
|
3077 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
3078 | |
|
|
3079 | errno = data->errorno; |
|
|
3080 | PL_laststype = data->laststype; |
|
|
3081 | PL_laststatval = data->laststatval; |
|
|
3082 | PL_statcache = data->statcache; |
|
|
3083 | |
|
|
3084 | SvREFCNT_dec (data_sv); |
|
|
3085 | } |
|
|
3086 | |
|
|
3087 | /* push result values */ |
|
|
3088 | { |
|
|
3089 | dSP; |
|
|
3090 | int i; |
|
|
3091 | |
|
|
3092 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
3093 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
3094 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
3095 | |
|
|
3096 | PUTBACK; |
|
|
3097 | } |
|
|
3098 | |
|
|
3099 | return 0; |
|
|
3100 | } |
|
|
3101 | |
|
|
3102 | static void |
|
|
3103 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
3104 | { |
|
|
3105 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
3106 | SV *coro_hv = SvRV (coro_current); |
|
|
3107 | struct coro *coro = SvSTATE_hv (coro_hv); |
|
|
3108 | |
|
|
3109 | /* put our coroutine id on the state arg */ |
|
|
3110 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
|
|
3111 | |
|
|
3112 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
3113 | if (coro->prio) |
|
|
3114 | { |
|
|
3115 | dSP; |
|
|
3116 | |
|
|
3117 | static SV *prio_cv; |
|
|
3118 | static SV *prio_sv; |
|
|
3119 | |
|
|
3120 | if (expect_false (!prio_cv)) |
|
|
3121 | { |
|
|
3122 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
3123 | prio_sv = newSViv (0); |
|
|
3124 | } |
|
|
3125 | |
|
|
3126 | PUSHMARK (SP); |
|
|
3127 | sv_setiv (prio_sv, coro->prio); |
|
|
3128 | XPUSHs (prio_sv); |
|
|
3129 | |
|
|
3130 | PUTBACK; |
|
|
3131 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
3132 | } |
|
|
3133 | |
|
|
3134 | /* now call the original request */ |
|
|
3135 | { |
|
|
3136 | dSP; |
|
|
3137 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
3138 | int i; |
|
|
3139 | |
|
|
3140 | PUSHMARK (SP); |
|
|
3141 | |
|
|
3142 | /* first push all args to the stack */ |
|
|
3143 | EXTEND (SP, items + 1); |
|
|
3144 | |
|
|
3145 | for (i = 0; i < items; ++i) |
|
|
3146 | PUSHs (arg [i]); |
|
|
3147 | |
|
|
3148 | /* now push the callback closure */ |
|
|
3149 | PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
3150 | |
|
|
3151 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
3152 | PUTBACK; |
|
|
3153 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
3154 | } |
|
|
3155 | |
|
|
3156 | /* now that the request is going, we loop till we have a result */ |
|
|
3157 | frame->data = (void *)state; |
|
|
3158 | frame->prepare = prepare_schedule; |
|
|
3159 | frame->check = slf_check_aio_req; |
|
|
3160 | } |
|
|
3161 | |
|
|
3162 | static void |
|
|
3163 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
3164 | { |
|
|
3165 | dXSARGS; |
|
|
3166 | |
|
|
3167 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
3168 | |
|
|
3169 | XSRETURN_EMPTY; |
|
|
3170 | } |
|
|
3171 | |
|
|
3172 | /*****************************************************************************/ |
|
|
3173 | |
|
|
3174 | #if CORO_CLONE |
|
|
3175 | # include "clone.c" |
|
|
3176 | #endif |
|
|
3177 | |
|
|
3178 | /*****************************************************************************/ |
|
|
3179 | |
|
|
3180 | static SV * |
|
|
3181 | coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro) |
|
|
3182 | { |
|
|
3183 | SV *coro_sv; |
|
|
3184 | struct coro *coro; |
|
|
3185 | MAGIC *mg; |
|
|
3186 | HV *hv; |
|
|
3187 | SV *cb; |
|
|
3188 | int i; |
|
|
3189 | |
|
|
3190 | if (argc > 0) |
|
|
3191 | { |
|
|
3192 | cb = s_get_cv_croak (argv [0]); |
|
|
3193 | |
|
|
3194 | if (!is_coro) |
|
|
3195 | { |
|
|
3196 | if (CvISXSUB (cb)) |
|
|
3197 | croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
|
|
3198 | |
|
|
3199 | if (!CvROOT (cb)) |
|
|
3200 | croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
|
|
3201 | } |
|
|
3202 | } |
|
|
3203 | |
|
|
3204 | Newz (0, coro, 1, struct coro); |
|
|
3205 | coro->args = newAV (); |
|
|
3206 | coro->flags = CF_NEW; |
|
|
3207 | |
|
|
3208 | if (coro_first) coro_first->prev = coro; |
|
|
3209 | coro->next = coro_first; |
|
|
3210 | coro_first = coro; |
|
|
3211 | |
|
|
3212 | coro->hv = hv = newHV (); |
|
|
3213 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
3214 | mg->mg_flags |= MGf_DUP; |
|
|
3215 | coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash); |
|
|
3216 | |
|
|
3217 | if (argc > 0) |
|
|
3218 | { |
|
|
3219 | av_extend (coro->args, argc + is_coro - 1); |
|
|
3220 | |
|
|
3221 | if (is_coro) |
|
|
3222 | { |
|
|
3223 | av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
|
|
3224 | cb = (SV *)cv_coro_run; |
|
|
3225 | } |
|
|
3226 | |
|
|
3227 | coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
|
|
3228 | |
|
|
3229 | for (i = 1; i < argc; i++) |
|
|
3230 | av_push (coro->args, newSVsv (argv [i])); |
|
|
3231 | } |
|
|
3232 | |
|
|
3233 | return coro_sv; |
|
|
3234 | } |
|
|
3235 | |
1004 | MODULE = Coro::State PACKAGE = Coro::State |
3236 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
1005 | |
3237 | |
1006 | PROTOTYPES: DISABLE |
3238 | PROTOTYPES: DISABLE |
1007 | |
3239 | |
1008 | BOOT: |
3240 | BOOT: |
1009 | { |
3241 | { |
1010 | #ifdef USE_ITHREADS |
3242 | #ifdef USE_ITHREADS |
1011 | MUTEX_INIT (&coro_mutex); |
3243 | # if CORO_PTHREAD |
|
|
3244 | coro_thx = PERL_GET_CONTEXT; |
|
|
3245 | # endif |
1012 | #endif |
3246 | #endif |
1013 | BOOT_PAGESIZE; |
3247 | BOOT_PAGESIZE; |
1014 | |
3248 | |
|
|
3249 | cctx_current = cctx_new_empty (); |
|
|
3250 | |
|
|
3251 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
3252 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
3253 | |
|
|
3254 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
3255 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
3256 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
3257 | |
|
|
3258 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
3259 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
3260 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
3261 | |
1015 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
3262 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1016 | |
3263 | |
1017 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
3264 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
1018 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
3265 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
1019 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
3266 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
|
|
3267 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
1020 | |
3268 | |
1021 | main_mainstack = PL_mainstack; |
3269 | main_mainstack = PL_mainstack; |
|
|
3270 | main_top_env = PL_top_env; |
1022 | |
3271 | |
|
|
3272 | while (main_top_env->je_prev) |
|
|
3273 | main_top_env = main_top_env->je_prev; |
|
|
3274 | |
|
|
3275 | { |
|
|
3276 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
3277 | |
|
|
3278 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
3279 | hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0); |
|
|
3280 | |
|
|
3281 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
3282 | hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0); |
|
|
3283 | } |
|
|
3284 | |
1023 | coroapi.ver = CORO_API_VERSION; |
3285 | coroapi.ver = CORO_API_VERSION; |
|
|
3286 | coroapi.rev = CORO_API_REVISION; |
|
|
3287 | |
1024 | coroapi.transfer = api_transfer; |
3288 | coroapi.transfer = api_transfer; |
1025 | |
3289 | |
|
|
3290 | coroapi.sv_state = SvSTATE_; |
|
|
3291 | coroapi.execute_slf = api_execute_slf; |
|
|
3292 | coroapi.prepare_nop = prepare_nop; |
|
|
3293 | coroapi.prepare_schedule = prepare_schedule; |
|
|
3294 | coroapi.prepare_cede = prepare_cede; |
|
|
3295 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
3296 | |
|
|
3297 | time_init (aTHX); |
|
|
3298 | |
1026 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
3299 | assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); |
1027 | } |
3300 | } |
1028 | |
3301 | |
1029 | SV * |
3302 | SV * |
1030 | new (char *klass, ...) |
3303 | new (SV *klass, ...) |
|
|
3304 | ALIAS: |
|
|
3305 | Coro::new = 1 |
1031 | CODE: |
3306 | CODE: |
1032 | { |
3307 | RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix); |
1033 | struct coro *coro; |
3308 | OUTPUT: |
1034 | HV *hv; |
|
|
1035 | int i; |
|
|
1036 | |
|
|
1037 | Newz (0, coro, 1, struct coro); |
|
|
1038 | coro->args = newAV (); |
|
|
1039 | |
|
|
1040 | hv = newHV (); |
|
|
1041 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
1042 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1043 | |
|
|
1044 | for (i = 1; i < items; i++) |
|
|
1045 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1046 | } |
|
|
1047 | OUTPUT: |
|
|
1048 | RETVAL |
3309 | RETVAL |
1049 | |
3310 | |
1050 | void |
3311 | void |
1051 | _set_stacklevel (...) |
3312 | transfer (...) |
1052 | ALIAS: |
3313 | PROTOTYPE: $$ |
1053 | Coro::State::transfer = 1 |
3314 | CODE: |
1054 | Coro::schedule = 2 |
3315 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
1055 | Coro::cede = 3 |
|
|
1056 | Coro::Cont::yield = 4 |
|
|
1057 | CODE: |
|
|
1058 | { |
|
|
1059 | struct transfer_args ta; |
|
|
1060 | |
|
|
1061 | switch (ix) |
|
|
1062 | { |
|
|
1063 | case 0: |
|
|
1064 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1065 | ta.next = 0; |
|
|
1066 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1067 | break; |
|
|
1068 | |
|
|
1069 | case 1: |
|
|
1070 | if (items != 3) |
|
|
1071 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1072 | |
|
|
1073 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1074 | break; |
|
|
1075 | |
|
|
1076 | case 2: |
|
|
1077 | prepare_schedule (&ta); |
|
|
1078 | break; |
|
|
1079 | |
|
|
1080 | case 3: |
|
|
1081 | prepare_cede (&ta); |
|
|
1082 | break; |
|
|
1083 | |
|
|
1084 | case 4: |
|
|
1085 | { |
|
|
1086 | SV *yieldstack; |
|
|
1087 | SV *sv; |
|
|
1088 | AV *defav = GvAV (PL_defgv); |
|
|
1089 | |
|
|
1090 | yieldstack = *hv_fetch ( |
|
|
1091 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1092 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1093 | 0 |
|
|
1094 | ); |
|
|
1095 | |
|
|
1096 | /* set up @_ -- ugly */ |
|
|
1097 | av_clear (defav); |
|
|
1098 | av_fill (defav, items - 1); |
|
|
1099 | while (items--) |
|
|
1100 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1101 | |
|
|
1102 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1103 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1104 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1105 | ta.flags = 0; |
|
|
1106 | SvREFCNT_dec (sv); |
|
|
1107 | } |
|
|
1108 | break; |
|
|
1109 | |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | TRANSFER (ta); |
|
|
1113 | } |
|
|
1114 | |
3316 | |
1115 | void |
3317 | void |
1116 | _clone_state_from (SV *dst, SV *src) |
|
|
1117 | CODE: |
|
|
1118 | { |
|
|
1119 | struct coro *coro_src = SvSTATE (src); |
|
|
1120 | |
|
|
1121 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1122 | |
|
|
1123 | ++coro_src->refcnt; |
|
|
1124 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1125 | } |
|
|
1126 | |
|
|
1127 | void |
|
|
1128 | _exit (code) |
3318 | _exit (int code) |
1129 | int code |
|
|
1130 | PROTOTYPE: $ |
3319 | PROTOTYPE: $ |
1131 | CODE: |
3320 | CODE: |
1132 | _exit (code); |
3321 | _exit (code); |
1133 | |
3322 | |
|
|
3323 | SV * |
|
|
3324 | clone (Coro::State coro) |
|
|
3325 | CODE: |
|
|
3326 | { |
|
|
3327 | #if CORO_CLONE |
|
|
3328 | struct coro *ncoro = coro_clone (aTHX_ coro); |
|
|
3329 | MAGIC *mg; |
|
|
3330 | /* TODO: too much duplication */ |
|
|
3331 | ncoro->hv = newHV (); |
|
|
3332 | mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); |
|
|
3333 | mg->mg_flags |= MGf_DUP; |
|
|
3334 | RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); |
|
|
3335 | #else |
|
|
3336 | croak ("Coro::State->clone has not been configured into this installation of Coro, realised"); |
|
|
3337 | #endif |
|
|
3338 | } |
|
|
3339 | OUTPUT: |
|
|
3340 | RETVAL |
|
|
3341 | |
|
|
3342 | int |
|
|
3343 | cctx_stacksize (int new_stacksize = 0) |
|
|
3344 | PROTOTYPE: ;$ |
|
|
3345 | CODE: |
|
|
3346 | RETVAL = cctx_stacksize; |
|
|
3347 | if (new_stacksize) |
|
|
3348 | { |
|
|
3349 | cctx_stacksize = new_stacksize; |
|
|
3350 | ++cctx_gen; |
|
|
3351 | } |
|
|
3352 | OUTPUT: |
|
|
3353 | RETVAL |
|
|
3354 | |
|
|
3355 | int |
|
|
3356 | cctx_max_idle (int max_idle = 0) |
|
|
3357 | PROTOTYPE: ;$ |
|
|
3358 | CODE: |
|
|
3359 | RETVAL = cctx_max_idle; |
|
|
3360 | if (max_idle > 1) |
|
|
3361 | cctx_max_idle = max_idle; |
|
|
3362 | OUTPUT: |
|
|
3363 | RETVAL |
|
|
3364 | |
1134 | int |
3365 | int |
1135 | cctx_count () |
3366 | cctx_count () |
|
|
3367 | PROTOTYPE: |
1136 | CODE: |
3368 | CODE: |
1137 | RETVAL = cctx_count; |
3369 | RETVAL = cctx_count; |
1138 | OUTPUT: |
3370 | OUTPUT: |
1139 | RETVAL |
3371 | RETVAL |
1140 | |
3372 | |
1141 | int |
3373 | int |
1142 | cctx_idle () |
3374 | cctx_idle () |
|
|
3375 | PROTOTYPE: |
1143 | CODE: |
3376 | CODE: |
1144 | RETVAL = cctx_idle; |
3377 | RETVAL = cctx_idle; |
1145 | OUTPUT: |
3378 | OUTPUT: |
1146 | RETVAL |
3379 | RETVAL |
1147 | |
3380 | |
|
|
3381 | void |
|
|
3382 | list () |
|
|
3383 | PROTOTYPE: |
|
|
3384 | PPCODE: |
|
|
3385 | { |
|
|
3386 | struct coro *coro; |
|
|
3387 | for (coro = coro_first; coro; coro = coro->next) |
|
|
3388 | if (coro->hv) |
|
|
3389 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
3390 | } |
|
|
3391 | |
|
|
3392 | void |
|
|
3393 | call (Coro::State coro, SV *coderef) |
|
|
3394 | ALIAS: |
|
|
3395 | eval = 1 |
|
|
3396 | CODE: |
|
|
3397 | { |
|
|
3398 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
3399 | { |
|
|
3400 | struct coro *current = SvSTATE_current; |
|
|
3401 | struct CoroSLF slf_save; |
|
|
3402 | |
|
|
3403 | if (current != coro) |
|
|
3404 | { |
|
|
3405 | PUTBACK; |
|
|
3406 | save_perl (aTHX_ current); |
|
|
3407 | load_perl (aTHX_ coro); |
|
|
3408 | /* the coro is most likely in an active SLF call. |
|
|
3409 | * while not strictly required (the code we execute is |
|
|
3410 | * not allowed to call any SLF functions), it's cleaner |
|
|
3411 | * to reinitialise the slf_frame and restore it later. |
|
|
3412 | * This might one day allow us to actually do SLF calls |
|
|
3413 | * from code executed here. |
|
|
3414 | */ |
|
|
3415 | slf_save = slf_frame; |
|
|
3416 | slf_frame.prepare = 0; |
|
|
3417 | SPAGAIN; |
|
|
3418 | } |
|
|
3419 | |
|
|
3420 | PUSHSTACK; |
|
|
3421 | |
|
|
3422 | PUSHMARK (SP); |
|
|
3423 | PUTBACK; |
|
|
3424 | |
|
|
3425 | if (ix) |
|
|
3426 | eval_sv (coderef, 0); |
|
|
3427 | else |
|
|
3428 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3429 | |
|
|
3430 | POPSTACK; |
|
|
3431 | SPAGAIN; |
|
|
3432 | |
|
|
3433 | if (current != coro) |
|
|
3434 | { |
|
|
3435 | PUTBACK; |
|
|
3436 | slf_frame = slf_save; |
|
|
3437 | save_perl (aTHX_ coro); |
|
|
3438 | load_perl (aTHX_ current); |
|
|
3439 | SPAGAIN; |
|
|
3440 | } |
|
|
3441 | } |
|
|
3442 | } |
|
|
3443 | |
|
|
3444 | SV * |
|
|
3445 | is_ready (Coro::State coro) |
|
|
3446 | PROTOTYPE: $ |
|
|
3447 | ALIAS: |
|
|
3448 | is_ready = CF_READY |
|
|
3449 | is_running = CF_RUNNING |
|
|
3450 | is_new = CF_NEW |
|
|
3451 | is_destroyed = CF_DESTROYED |
|
|
3452 | is_suspended = CF_SUSPENDED |
|
|
3453 | CODE: |
|
|
3454 | RETVAL = boolSV (coro->flags & ix); |
|
|
3455 | OUTPUT: |
|
|
3456 | RETVAL |
|
|
3457 | |
|
|
3458 | void |
|
|
3459 | throw (Coro::State self, SV *exception = &PL_sv_undef) |
|
|
3460 | PROTOTYPE: $;$ |
|
|
3461 | CODE: |
|
|
3462 | { |
|
|
3463 | struct coro *current = SvSTATE_current; |
|
|
3464 | SV **exceptionp = self == current ? &CORO_THROW : &self->except; |
|
|
3465 | SvREFCNT_dec (*exceptionp); |
|
|
3466 | SvGETMAGIC (exception); |
|
|
3467 | *exceptionp = SvOK (exception) ? newSVsv (exception) : 0; |
|
|
3468 | } |
|
|
3469 | |
|
|
3470 | void |
|
|
3471 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
3472 | PROTOTYPE: $;$ |
|
|
3473 | C_ARGS: aTHX_ coro, flags |
|
|
3474 | |
|
|
3475 | SV * |
|
|
3476 | has_cctx (Coro::State coro) |
|
|
3477 | PROTOTYPE: $ |
|
|
3478 | CODE: |
|
|
3479 | /* maybe manage the running flag differently */ |
|
|
3480 | RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING)); |
|
|
3481 | OUTPUT: |
|
|
3482 | RETVAL |
|
|
3483 | |
|
|
3484 | int |
|
|
3485 | is_traced (Coro::State coro) |
|
|
3486 | PROTOTYPE: $ |
|
|
3487 | CODE: |
|
|
3488 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
3489 | OUTPUT: |
|
|
3490 | RETVAL |
|
|
3491 | |
|
|
3492 | UV |
|
|
3493 | rss (Coro::State coro) |
|
|
3494 | PROTOTYPE: $ |
|
|
3495 | ALIAS: |
|
|
3496 | usecount = 1 |
|
|
3497 | CODE: |
|
|
3498 | switch (ix) |
|
|
3499 | { |
|
|
3500 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
3501 | case 1: RETVAL = coro->usecount; break; |
|
|
3502 | } |
|
|
3503 | OUTPUT: |
|
|
3504 | RETVAL |
|
|
3505 | |
|
|
3506 | void |
|
|
3507 | force_cctx () |
|
|
3508 | PROTOTYPE: |
|
|
3509 | CODE: |
|
|
3510 | cctx_current->idle_sp = 0; |
|
|
3511 | |
|
|
3512 | void |
|
|
3513 | swap_defsv (Coro::State self) |
|
|
3514 | PROTOTYPE: $ |
|
|
3515 | ALIAS: |
|
|
3516 | swap_defav = 1 |
|
|
3517 | CODE: |
|
|
3518 | if (!self->slot) |
|
|
3519 | croak ("cannot swap state with coroutine that has no saved state,"); |
|
|
3520 | else |
|
|
3521 | { |
|
|
3522 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
3523 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
|
|
3524 | |
|
|
3525 | SV *tmp = *src; *src = *dst; *dst = tmp; |
|
|
3526 | } |
|
|
3527 | |
|
|
3528 | void |
|
|
3529 | cancel (Coro::State self) |
|
|
3530 | CODE: |
|
|
3531 | coro_state_destroy (aTHX_ self); |
|
|
3532 | |
|
|
3533 | SV * |
|
|
3534 | enable_times (int enabled = enable_times) |
|
|
3535 | CODE: |
|
|
3536 | { |
|
|
3537 | RETVAL = boolSV (enable_times); |
|
|
3538 | |
|
|
3539 | if (enabled != enable_times) |
|
|
3540 | { |
|
|
3541 | enable_times = enabled; |
|
|
3542 | |
|
|
3543 | coro_times_update (); |
|
|
3544 | (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current)); |
|
|
3545 | } |
|
|
3546 | } |
|
|
3547 | OUTPUT: |
|
|
3548 | RETVAL |
|
|
3549 | |
|
|
3550 | void |
|
|
3551 | times (Coro::State self) |
|
|
3552 | PPCODE: |
|
|
3553 | { |
|
|
3554 | struct coro *current = SvSTATE (coro_current); |
|
|
3555 | |
|
|
3556 | if (expect_false (current == self)) |
|
|
3557 | { |
|
|
3558 | coro_times_update (); |
|
|
3559 | coro_times_add (SvSTATE (coro_current)); |
|
|
3560 | } |
|
|
3561 | |
|
|
3562 | EXTEND (SP, 2); |
|
|
3563 | PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); |
|
|
3564 | PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); |
|
|
3565 | |
|
|
3566 | if (expect_false (current == self)) |
|
|
3567 | coro_times_sub (SvSTATE (coro_current)); |
|
|
3568 | } |
|
|
3569 | |
|
|
3570 | void |
|
|
3571 | swap_sv (Coro::State coro, SV *sv, SV *swapsv) |
|
|
3572 | CODE: |
|
|
3573 | { |
|
|
3574 | struct coro *current = SvSTATE_current; |
|
|
3575 | |
|
|
3576 | if (current == coro) |
|
|
3577 | SWAP_SVS (current); |
|
|
3578 | |
|
|
3579 | if (!coro->swap_sv) |
|
|
3580 | coro->swap_sv = newAV (); |
|
|
3581 | |
|
|
3582 | av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv ))); |
|
|
3583 | av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv))); |
|
|
3584 | |
|
|
3585 | if (current == coro) |
|
|
3586 | SWAP_SVS (current); |
|
|
3587 | } |
|
|
3588 | |
|
|
3589 | |
1148 | MODULE = Coro::State PACKAGE = Coro |
3590 | MODULE = Coro::State PACKAGE = Coro |
1149 | |
3591 | |
1150 | BOOT: |
3592 | BOOT: |
1151 | { |
3593 | { |
1152 | int i; |
3594 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
3595 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
3596 | cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); |
|
|
3597 | coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
|
|
3598 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
3599 | av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); |
|
|
3600 | sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); |
|
|
3601 | sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); |
1153 | |
3602 | |
|
|
3603 | sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
|
|
3604 | sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
|
|
3605 | cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
|
|
3606 | CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ |
|
|
3607 | |
1154 | coro_stash = gv_stashpv ("Coro", TRUE); |
3608 | coro_stash = gv_stashpv ("Coro", TRUE); |
1155 | |
3609 | |
1156 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
3610 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); |
1157 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
3611 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); |
1158 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
3612 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); |
1159 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
3613 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW)); |
1160 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
3614 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE)); |
1161 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
3615 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN)); |
1162 | |
|
|
1163 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1164 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1165 | |
|
|
1166 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
1167 | coro_ready[i] = newAV (); |
|
|
1168 | |
3616 | |
1169 | { |
3617 | { |
1170 | SV *sv = perl_get_sv("Coro::API", 1); |
3618 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
1171 | |
3619 | |
1172 | coroapi.schedule = api_schedule; |
3620 | coroapi.schedule = api_schedule; |
|
|
3621 | coroapi.schedule_to = api_schedule_to; |
1173 | coroapi.cede = api_cede; |
3622 | coroapi.cede = api_cede; |
|
|
3623 | coroapi.cede_notself = api_cede_notself; |
1174 | coroapi.ready = api_ready; |
3624 | coroapi.ready = api_ready; |
1175 | coroapi.is_ready = api_is_ready; |
3625 | coroapi.is_ready = api_is_ready; |
1176 | coroapi.nready = &coro_nready; |
3626 | coroapi.nready = coro_nready; |
1177 | coroapi.current = coro_current; |
3627 | coroapi.current = coro_current; |
1178 | |
3628 | |
1179 | GCoroAPI = &coroapi; |
3629 | /*GCoroAPI = &coroapi;*/ |
1180 | sv_setiv (sv, (IV)&coroapi); |
3630 | sv_setiv (sv, (IV)&coroapi); |
1181 | SvREADONLY_on (sv); |
3631 | SvREADONLY_on (sv); |
1182 | } |
3632 | } |
1183 | } |
3633 | } |
1184 | |
3634 | |
|
|
3635 | SV * |
|
|
3636 | async (...) |
|
|
3637 | PROTOTYPE: &@ |
|
|
3638 | CODE: |
|
|
3639 | RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1); |
|
|
3640 | api_ready (aTHX_ RETVAL); |
|
|
3641 | OUTPUT: |
|
|
3642 | RETVAL |
|
|
3643 | |
|
|
3644 | void |
|
|
3645 | _destroy (Coro::State coro) |
|
|
3646 | CODE: |
|
|
3647 | /* used by the manager thread */ |
|
|
3648 | coro_state_destroy (aTHX_ coro); |
|
|
3649 | coro_call_on_destroy (aTHX_ coro); |
|
|
3650 | |
|
|
3651 | void |
|
|
3652 | terminate (...) |
|
|
3653 | CODE: |
|
|
3654 | CORO_EXECUTE_SLF_XS (slf_init_terminate); |
|
|
3655 | |
|
|
3656 | void |
|
|
3657 | cancel (...) |
|
|
3658 | CODE: |
|
|
3659 | CORO_EXECUTE_SLF_XS (slf_init_cancel); |
|
|
3660 | |
|
|
3661 | int |
|
|
3662 | safe_cancel (Coro::State self, ...) |
|
|
3663 | C_ARGS: aTHX_ self, &ST (1), items - 1 |
|
|
3664 | |
|
|
3665 | void |
|
|
3666 | schedule (...) |
|
|
3667 | CODE: |
|
|
3668 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
3669 | |
|
|
3670 | void |
|
|
3671 | schedule_to (...) |
|
|
3672 | CODE: |
|
|
3673 | CORO_EXECUTE_SLF_XS (slf_init_schedule_to); |
|
|
3674 | |
|
|
3675 | void |
|
|
3676 | cede_to (...) |
|
|
3677 | CODE: |
|
|
3678 | CORO_EXECUTE_SLF_XS (slf_init_cede_to); |
|
|
3679 | |
|
|
3680 | void |
|
|
3681 | cede (...) |
|
|
3682 | CODE: |
|
|
3683 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
3684 | |
|
|
3685 | void |
|
|
3686 | cede_notself (...) |
|
|
3687 | CODE: |
|
|
3688 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
3689 | |
|
|
3690 | void |
|
|
3691 | _set_current (SV *current) |
|
|
3692 | PROTOTYPE: $ |
|
|
3693 | CODE: |
|
|
3694 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
3695 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
3696 | |
|
|
3697 | void |
|
|
3698 | _set_readyhook (SV *hook) |
|
|
3699 | PROTOTYPE: $ |
|
|
3700 | CODE: |
|
|
3701 | SvREFCNT_dec (coro_readyhook); |
|
|
3702 | SvGETMAGIC (hook); |
|
|
3703 | if (SvOK (hook)) |
|
|
3704 | { |
|
|
3705 | coro_readyhook = newSVsv (hook); |
|
|
3706 | CORO_READYHOOK = invoke_sv_ready_hook_helper; |
|
|
3707 | } |
|
|
3708 | else |
|
|
3709 | { |
|
|
3710 | coro_readyhook = 0; |
|
|
3711 | CORO_READYHOOK = 0; |
|
|
3712 | } |
|
|
3713 | |
1185 | int |
3714 | int |
1186 | prio (Coro::State coro, int newprio = 0) |
3715 | prio (Coro::State coro, int newprio = 0) |
|
|
3716 | PROTOTYPE: $;$ |
1187 | ALIAS: |
3717 | ALIAS: |
1188 | nice = 1 |
3718 | nice = 1 |
1189 | CODE: |
3719 | CODE: |
1190 | { |
3720 | { |
1191 | RETVAL = coro->prio; |
3721 | RETVAL = coro->prio; |
1192 | |
3722 | |
1193 | if (items > 1) |
3723 | if (items > 1) |
1194 | { |
3724 | { |
1195 | if (ix) |
3725 | if (ix) |
1196 | newprio += coro->prio; |
3726 | newprio = coro->prio - newprio; |
1197 | |
3727 | |
1198 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
3728 | if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN; |
1199 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
3729 | if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX; |
1200 | |
3730 | |
1201 | coro->prio = newprio; |
3731 | coro->prio = newprio; |
1202 | } |
3732 | } |
1203 | } |
3733 | } |
|
|
3734 | OUTPUT: |
|
|
3735 | RETVAL |
1204 | |
3736 | |
1205 | SV * |
3737 | SV * |
1206 | ready (SV *self) |
3738 | ready (SV *self) |
1207 | PROTOTYPE: $ |
3739 | PROTOTYPE: $ |
1208 | CODE: |
3740 | CODE: |
1209 | RETVAL = boolSV (api_ready (self)); |
3741 | RETVAL = boolSV (api_ready (aTHX_ self)); |
1210 | OUTPUT: |
|
|
1211 | RETVAL |
|
|
1212 | |
|
|
1213 | SV * |
|
|
1214 | is_ready (SV *self) |
|
|
1215 | PROTOTYPE: $ |
|
|
1216 | CODE: |
|
|
1217 | RETVAL = boolSV (api_is_ready (self)); |
|
|
1218 | OUTPUT: |
3742 | OUTPUT: |
1219 | RETVAL |
3743 | RETVAL |
1220 | |
3744 | |
1221 | int |
3745 | int |
1222 | nready (...) |
3746 | nready (...) |
… | |
… | |
1224 | CODE: |
3748 | CODE: |
1225 | RETVAL = coro_nready; |
3749 | RETVAL = coro_nready; |
1226 | OUTPUT: |
3750 | OUTPUT: |
1227 | RETVAL |
3751 | RETVAL |
1228 | |
3752 | |
1229 | MODULE = Coro::State PACKAGE = Coro::AIO |
3753 | void |
|
|
3754 | suspend (Coro::State self) |
|
|
3755 | PROTOTYPE: $ |
|
|
3756 | CODE: |
|
|
3757 | self->flags |= CF_SUSPENDED; |
|
|
3758 | |
|
|
3759 | void |
|
|
3760 | resume (Coro::State self) |
|
|
3761 | PROTOTYPE: $ |
|
|
3762 | CODE: |
|
|
3763 | self->flags &= ~CF_SUSPENDED; |
|
|
3764 | |
|
|
3765 | void |
|
|
3766 | _pool_handler (...) |
|
|
3767 | CODE: |
|
|
3768 | CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
|
|
3769 | |
|
|
3770 | void |
|
|
3771 | async_pool (SV *cv, ...) |
|
|
3772 | PROTOTYPE: &@ |
|
|
3773 | PPCODE: |
|
|
3774 | { |
|
|
3775 | HV *hv = (HV *)av_pop (av_async_pool); |
|
|
3776 | AV *av = newAV (); |
|
|
3777 | SV *cb = ST (0); |
|
|
3778 | int i; |
|
|
3779 | |
|
|
3780 | av_extend (av, items - 2); |
|
|
3781 | for (i = 1; i < items; ++i) |
|
|
3782 | av_push (av, SvREFCNT_inc_NN (ST (i))); |
|
|
3783 | |
|
|
3784 | if ((SV *)hv == &PL_sv_undef) |
|
|
3785 | { |
|
|
3786 | SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1); |
|
|
3787 | hv = (HV *)SvREFCNT_inc_NN (SvRV (sv)); |
|
|
3788 | SvREFCNT_dec (sv); |
|
|
3789 | } |
|
|
3790 | |
|
|
3791 | { |
|
|
3792 | struct coro *coro = SvSTATE_hv (hv); |
|
|
3793 | |
|
|
3794 | assert (!coro->invoke_cb); |
|
|
3795 | assert (!coro->invoke_av); |
|
|
3796 | coro->invoke_cb = SvREFCNT_inc (cb); |
|
|
3797 | coro->invoke_av = av; |
|
|
3798 | } |
|
|
3799 | |
|
|
3800 | api_ready (aTHX_ (SV *)hv); |
|
|
3801 | |
|
|
3802 | if (GIMME_V != G_VOID) |
|
|
3803 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
|
|
3804 | else |
|
|
3805 | SvREFCNT_dec (hv); |
|
|
3806 | } |
1230 | |
3807 | |
1231 | SV * |
3808 | SV * |
1232 | _get_state () |
3809 | rouse_cb () |
|
|
3810 | PROTOTYPE: |
1233 | CODE: |
3811 | CODE: |
1234 | { |
3812 | RETVAL = coro_new_rouse_cb (aTHX); |
1235 | struct { |
|
|
1236 | int errorno; |
|
|
1237 | int laststype; |
|
|
1238 | int laststatval; |
|
|
1239 | Stat_t statcache; |
|
|
1240 | } data; |
|
|
1241 | |
|
|
1242 | data.errorno = errno; |
|
|
1243 | data.laststype = PL_laststype; |
|
|
1244 | data.laststatval = PL_laststatval; |
|
|
1245 | data.statcache = PL_statcache; |
|
|
1246 | |
|
|
1247 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1248 | } |
|
|
1249 | OUTPUT: |
3813 | OUTPUT: |
1250 | RETVAL |
3814 | RETVAL |
1251 | |
3815 | |
1252 | void |
3816 | void |
1253 | _set_state (char *data_) |
3817 | rouse_wait (...) |
|
|
3818 | PROTOTYPE: ;$ |
|
|
3819 | PPCODE: |
|
|
3820 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
|
|
3821 | |
|
|
3822 | void |
|
|
3823 | on_enter (SV *block) |
|
|
3824 | ALIAS: |
|
|
3825 | on_leave = 1 |
1254 | PROTOTYPE: $ |
3826 | PROTOTYPE: & |
1255 | CODE: |
3827 | CODE: |
1256 | { |
3828 | { |
1257 | struct { |
3829 | struct coro *coro = SvSTATE_current; |
|
|
3830 | AV **avp = ix ? &coro->on_leave : &coro->on_enter; |
|
|
3831 | |
|
|
3832 | block = s_get_cv_croak (block); |
|
|
3833 | |
|
|
3834 | if (!*avp) |
|
|
3835 | *avp = newAV (); |
|
|
3836 | |
|
|
3837 | av_push (*avp, SvREFCNT_inc (block)); |
|
|
3838 | |
|
|
3839 | if (!ix) |
|
|
3840 | on_enterleave_call (aTHX_ block); |
|
|
3841 | |
|
|
3842 | LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
|
|
3843 | SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro); |
|
|
3844 | ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
|
|
3845 | } |
|
|
3846 | |
|
|
3847 | |
|
|
3848 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
3849 | |
|
|
3850 | BOOT: |
|
|
3851 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
3852 | |
|
|
3853 | |
|
|
3854 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
3855 | |
|
|
3856 | SV * |
|
|
3857 | new (SV *klass, SV *count = 0) |
|
|
3858 | CODE: |
|
|
3859 | { |
|
|
3860 | int semcnt = 1; |
|
|
3861 | |
|
|
3862 | if (count) |
|
|
3863 | { |
|
|
3864 | SvGETMAGIC (count); |
|
|
3865 | |
|
|
3866 | if (SvOK (count)) |
|
|
3867 | semcnt = SvIV (count); |
|
|
3868 | } |
|
|
3869 | |
|
|
3870 | RETVAL = sv_bless ( |
|
|
3871 | coro_waitarray_new (aTHX_ semcnt), |
|
|
3872 | GvSTASH (CvGV (cv)) |
|
|
3873 | ); |
|
|
3874 | } |
|
|
3875 | OUTPUT: |
|
|
3876 | RETVAL |
|
|
3877 | |
|
|
3878 | # helper for Coro::Channel and others |
|
|
3879 | SV * |
|
|
3880 | _alloc (int count) |
|
|
3881 | CODE: |
|
|
3882 | RETVAL = coro_waitarray_new (aTHX_ count); |
|
|
3883 | OUTPUT: |
|
|
3884 | RETVAL |
|
|
3885 | |
|
|
3886 | SV * |
|
|
3887 | count (SV *self) |
|
|
3888 | CODE: |
|
|
3889 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
3890 | OUTPUT: |
|
|
3891 | RETVAL |
|
|
3892 | |
|
|
3893 | void |
|
|
3894 | up (SV *self, int adjust = 1) |
|
|
3895 | ALIAS: |
|
|
3896 | adjust = 1 |
|
|
3897 | CODE: |
|
|
3898 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
|
|
3899 | |
|
|
3900 | void |
|
|
3901 | down (...) |
|
|
3902 | CODE: |
|
|
3903 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
3904 | |
|
|
3905 | void |
|
|
3906 | wait (...) |
|
|
3907 | CODE: |
|
|
3908 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
|
|
3909 | |
|
|
3910 | void |
|
|
3911 | try (SV *self) |
|
|
3912 | PPCODE: |
|
|
3913 | { |
|
|
3914 | AV *av = (AV *)SvRV (self); |
|
|
3915 | SV *count_sv = AvARRAY (av)[0]; |
|
|
3916 | IV count = SvIVX (count_sv); |
|
|
3917 | |
|
|
3918 | if (count > 0) |
|
|
3919 | { |
|
|
3920 | --count; |
|
|
3921 | SvIVX (count_sv) = count; |
|
|
3922 | XSRETURN_YES; |
|
|
3923 | } |
|
|
3924 | else |
|
|
3925 | XSRETURN_NO; |
|
|
3926 | } |
|
|
3927 | |
|
|
3928 | void |
|
|
3929 | waiters (SV *self) |
|
|
3930 | PPCODE: |
|
|
3931 | { |
|
|
3932 | AV *av = (AV *)SvRV (self); |
|
|
3933 | int wcount = AvFILLp (av) + 1 - 1; |
|
|
3934 | |
|
|
3935 | if (GIMME_V == G_SCALAR) |
|
|
3936 | XPUSHs (sv_2mortal (newSViv (wcount))); |
|
|
3937 | else |
|
|
3938 | { |
1258 | int errorno; |
3939 | int i; |
1259 | int laststype; |
3940 | EXTEND (SP, wcount); |
1260 | int laststatval; |
3941 | for (i = 1; i <= wcount; ++i) |
1261 | Stat_t statcache; |
3942 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
1262 | } *data = (void *)data_; |
3943 | } |
1263 | |
|
|
1264 | errno = data->errorno; |
|
|
1265 | PL_laststype = data->laststype; |
|
|
1266 | PL_laststatval = data->laststatval; |
|
|
1267 | PL_statcache = data->statcache; |
|
|
1268 | } |
3944 | } |
|
|
3945 | |
|
|
3946 | MODULE = Coro::State PACKAGE = Coro::SemaphoreSet |
|
|
3947 | |
|
|
3948 | void |
|
|
3949 | _may_delete (SV *sem, int count, int extra_refs) |
|
|
3950 | PPCODE: |
|
|
3951 | { |
|
|
3952 | AV *av = (AV *)SvRV (sem); |
|
|
3953 | |
|
|
3954 | if (SvREFCNT ((SV *)av) == 1 + extra_refs |
|
|
3955 | && AvFILLp (av) == 0 /* no waiters, just count */ |
|
|
3956 | && SvIV (AvARRAY (av)[0]) == count) |
|
|
3957 | XSRETURN_YES; |
|
|
3958 | |
|
|
3959 | XSRETURN_NO; |
|
|
3960 | } |
|
|
3961 | |
|
|
3962 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
3963 | |
|
|
3964 | SV * |
|
|
3965 | new (SV *klass) |
|
|
3966 | CODE: |
|
|
3967 | RETVAL = sv_bless ( |
|
|
3968 | coro_waitarray_new (aTHX_ 0), |
|
|
3969 | GvSTASH (CvGV (cv)) |
|
|
3970 | ); |
|
|
3971 | OUTPUT: |
|
|
3972 | RETVAL |
|
|
3973 | |
|
|
3974 | void |
|
|
3975 | wait (...) |
|
|
3976 | CODE: |
|
|
3977 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
|
|
3978 | |
|
|
3979 | void |
|
|
3980 | broadcast (SV *self) |
|
|
3981 | CODE: |
|
|
3982 | { |
|
|
3983 | AV *av = (AV *)SvRV (self); |
|
|
3984 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
3985 | } |
|
|
3986 | |
|
|
3987 | void |
|
|
3988 | send (SV *self) |
|
|
3989 | CODE: |
|
|
3990 | { |
|
|
3991 | AV *av = (AV *)SvRV (self); |
|
|
3992 | |
|
|
3993 | if (AvFILLp (av)) |
|
|
3994 | coro_signal_wake (aTHX_ av, 1); |
|
|
3995 | else |
|
|
3996 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
3997 | } |
|
|
3998 | |
|
|
3999 | IV |
|
|
4000 | awaited (SV *self) |
|
|
4001 | CODE: |
|
|
4002 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
4003 | OUTPUT: |
|
|
4004 | RETVAL |
|
|
4005 | |
|
|
4006 | |
|
|
4007 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
4008 | |
|
|
4009 | BOOT: |
|
|
4010 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
4011 | |
|
|
4012 | void |
|
|
4013 | _schedule (...) |
|
|
4014 | CODE: |
|
|
4015 | { |
|
|
4016 | static int incede; |
|
|
4017 | |
|
|
4018 | api_cede_notself (aTHX); |
|
|
4019 | |
|
|
4020 | ++incede; |
|
|
4021 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
4022 | ; |
|
|
4023 | |
|
|
4024 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
4025 | if (coro_nready >= incede) |
|
|
4026 | { |
|
|
4027 | PUSHMARK (SP); |
|
|
4028 | PUTBACK; |
|
|
4029 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
4030 | } |
|
|
4031 | |
|
|
4032 | --incede; |
|
|
4033 | } |
|
|
4034 | |
|
|
4035 | |
|
|
4036 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
4037 | |
|
|
4038 | void |
|
|
4039 | _register (char *target, char *proto, SV *req) |
|
|
4040 | CODE: |
|
|
4041 | { |
|
|
4042 | SV *req_cv = s_get_cv_croak (req); |
|
|
4043 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
4044 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
4045 | sv_setpv ((SV *)slf_cv, proto); |
|
|
4046 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
4047 | } |
|
|
4048 | |
|
|
4049 | MODULE = Coro::State PACKAGE = Coro::Select |
|
|
4050 | |
|
|
4051 | void |
|
|
4052 | patch_pp_sselect () |
|
|
4053 | CODE: |
|
|
4054 | if (!coro_old_pp_sselect) |
|
|
4055 | { |
|
|
4056 | coro_select_select = (SV *)get_cv ("Coro::Select::select", 0); |
|
|
4057 | coro_old_pp_sselect = PL_ppaddr [OP_SSELECT]; |
|
|
4058 | PL_ppaddr [OP_SSELECT] = coro_pp_sselect; |
|
|
4059 | } |
|
|
4060 | |
|
|
4061 | void |
|
|
4062 | unpatch_pp_sselect () |
|
|
4063 | CODE: |
|
|
4064 | if (coro_old_pp_sselect) |
|
|
4065 | { |
|
|
4066 | PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; |
|
|
4067 | coro_old_pp_sselect = 0; |
|
|
4068 | } |
|
|
4069 | |