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1 | #include "libcoro/coro.c" |
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2 | |
1 | #define PERL_NO_GET_CONTEXT |
3 | #define PERL_NO_GET_CONTEXT |
2 | |
4 | #define PERL_EXT |
3 | #include "libcoro/coro.c" |
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4 | |
5 | |
5 | #include "EXTERN.h" |
6 | #include "EXTERN.h" |
6 | #include "perl.h" |
7 | #include "perl.h" |
7 | #include "XSUB.h" |
8 | #include "XSUB.h" |
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9 | #include "perliol.h" |
8 | |
10 | |
9 | #include "patchlevel.h" |
11 | #include "patchlevel.h" |
10 | |
12 | |
11 | #if PERL_VERSION < 6 |
13 | #include <stdio.h> |
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14 | #include <errno.h> |
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15 | #include <assert.h> |
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16 | |
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17 | #ifdef WIN32 |
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18 | # undef setjmp |
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19 | # undef longjmp |
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20 | # undef _exit |
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21 | # define setjmp _setjmp /* deep magic */ |
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22 | #else |
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23 | # include <inttypes.h> /* most portable stdint.h */ |
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24 | #endif |
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25 | |
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26 | #ifdef HAVE_MMAP |
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27 | # include <unistd.h> |
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28 | # include <sys/mman.h> |
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29 | # ifndef MAP_ANONYMOUS |
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30 | # ifdef MAP_ANON |
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31 | # define MAP_ANONYMOUS MAP_ANON |
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32 | # else |
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33 | # undef HAVE_MMAP |
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34 | # endif |
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35 | # endif |
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36 | # include <limits.h> |
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37 | # ifndef PAGESIZE |
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38 | # define PAGESIZE pagesize |
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39 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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40 | static long pagesize; |
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41 | # else |
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42 | # define BOOT_PAGESIZE (void)0 |
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43 | # endif |
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44 | #else |
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45 | # define PAGESIZE 0 |
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46 | # define BOOT_PAGESIZE (void)0 |
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47 | #endif |
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48 | |
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49 | #if CORO_USE_VALGRIND |
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50 | # include <valgrind/valgrind.h> |
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51 | #endif |
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52 | |
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53 | /* the maximum number of idle cctx that will be pooled */ |
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54 | static int cctx_max_idle = 4; |
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55 | |
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56 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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57 | (PERL_REVISION > (a) \ |
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58 | || (PERL_REVISION == (a) \ |
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59 | && (PERL_VERSION > (b) \ |
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60 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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61 | |
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62 | #if !PERL_VERSION_ATLEAST (5,6,0) |
12 | # ifndef PL_ppaddr |
63 | # ifndef PL_ppaddr |
13 | # define PL_ppaddr ppaddr |
64 | # define PL_ppaddr ppaddr |
14 | # endif |
65 | # endif |
15 | # ifndef call_sv |
66 | # ifndef call_sv |
16 | # define call_sv perl_call_sv |
67 | # define call_sv perl_call_sv |
… | |
… | |
27 | # ifndef IS_PADCONST |
78 | # ifndef IS_PADCONST |
28 | # define IS_PADCONST(v) 0 |
79 | # define IS_PADCONST(v) 0 |
29 | # endif |
80 | # endif |
30 | #endif |
81 | #endif |
31 | |
82 | |
32 | #include <errno.h> |
83 | /* 5.11 */ |
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84 | #ifndef CxHASARGS |
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85 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
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86 | #endif |
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87 | |
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88 | /* 5.10.0 */ |
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89 | #ifndef SvREFCNT_inc_NN |
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90 | # define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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91 | #endif |
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92 | |
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93 | /* 5.8.8 */ |
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94 | #ifndef GV_NOTQUAL |
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95 | # define GV_NOTQUAL 0 |
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96 | #endif |
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97 | #ifndef newSV |
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98 | # define newSV(l) NEWSV(0,l) |
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99 | #endif |
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100 | #ifndef CvISXSUB_on |
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101 | # define CvISXSUB_on(cv) (void)cv |
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102 | #endif |
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103 | |
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104 | /* 5.8.7 */ |
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105 | #ifndef SvRV_set |
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106 | # define SvRV_set(s,v) SvRV(s) = (v) |
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107 | #endif |
33 | |
108 | |
34 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
109 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
35 | # undef STACKGUARD |
110 | # undef CORO_STACKGUARD |
36 | #endif |
111 | #endif |
37 | |
112 | |
38 | #ifndef STACKGUARD |
113 | #ifndef CORO_STACKGUARD |
39 | # define STACKGUARD 0 |
114 | # define CORO_STACKGUARD 0 |
40 | #endif |
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41 | |
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42 | #ifdef HAVE_MMAP |
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43 | # include <unistd.h> |
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44 | # include <sys/mman.h> |
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45 | # ifndef MAP_ANONYMOUS |
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46 | # ifdef MAP_ANON |
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47 | # define MAP_ANONYMOUS MAP_ANON |
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48 | # else |
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49 | # undef HAVE_MMAP |
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50 | # endif |
115 | #endif |
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116 | |
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117 | /* prefer perl internal functions over our own? */ |
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118 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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119 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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120 | #endif |
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121 | |
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122 | /* The next macros try to return the current stack pointer, in an as |
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123 | * portable way as possible. */ |
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124 | #if __GNUC__ >= 4 |
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125 | # define dSTACKLEVEL int stacklevel_dummy |
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126 | # define STACKLEVEL __builtin_frame_address (0) |
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127 | #else |
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128 | # define dSTACKLEVEL volatile void *stacklevel |
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129 | # define STACKLEVEL ((void *)&stacklevel) |
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130 | #endif |
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131 | |
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132 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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133 | |
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134 | #if __GNUC__ >= 3 |
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135 | # define attribute(x) __attribute__(x) |
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136 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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137 | # define INLINE static inline |
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138 | #else |
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139 | # define attribute(x) |
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140 | # define expect(expr,value) (expr) |
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141 | # define INLINE static |
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142 | #endif |
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143 | |
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144 | #define expect_false(expr) expect ((expr) != 0, 0) |
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145 | #define expect_true(expr) expect ((expr) != 0, 1) |
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146 | |
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147 | #define NOINLINE attribute ((noinline)) |
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148 | |
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149 | #include "CoroAPI.h" |
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150 | #define GCoroAPI (&coroapi) /* very sneaky */ |
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151 | |
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152 | #ifdef USE_ITHREADS |
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153 | # if CORO_PTHREAD |
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154 | static void *coro_thx; |
51 | # endif |
155 | # endif |
52 | # include <limits.h> |
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53 | # ifndef PAGESIZE |
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54 | # define PAGESIZE pagesize |
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55 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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56 | static long pagesize; |
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57 | # else |
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58 | # define BOOT_PAGESIZE |
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59 | # endif |
156 | #endif |
60 | #endif |
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61 | |
157 | |
62 | #define SUB_INIT "Coro::State::initialize" |
158 | static double (*nvtime)(); /* so why doesn't it take void? */ |
63 | #define UCORO_STATE "_coro_state" |
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64 | |
159 | |
65 | /* The next macro should declare a variable stacklevel that contains and approximation |
160 | /* we hijack an hopefully unused CV flag for our purposes */ |
66 | * to the current C stack pointer. Its property is that it changes with each call |
161 | #define CVf_SLF 0x4000 |
67 | * and should be unique. */ |
162 | static OP *pp_slf (pTHX); |
68 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
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69 | |
163 | |
70 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
164 | static U32 cctx_gen; |
71 | |
165 | static size_t cctx_stacksize = CORO_STACKSIZE; |
72 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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73 | |
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74 | #include "CoroAPI.h" |
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75 | |
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76 | #ifdef USE_ITHREADS |
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77 | static perl_mutex coro_mutex; |
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78 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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79 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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80 | #else |
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81 | # define LOCK (void)0 |
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82 | # define UNLOCK (void)0 |
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83 | #endif |
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84 | |
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85 | static struct CoroAPI coroapi; |
166 | static struct CoroAPI coroapi; |
86 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
167 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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168 | static JMPENV *main_top_env; |
87 | static HV *coro_state_stash; |
169 | static HV *coro_state_stash, *coro_stash; |
88 | static SV *ucoro_state_sv; |
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89 | static U32 ucoro_state_hash; |
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90 | static SV *coro_mortal; /* will be freed after next transfer */ |
170 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
91 | |
171 | |
92 | /* this is actually not only the c stack but also c registers etc... */ |
172 | static GV *irsgv; /* $/ */ |
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173 | static GV *stdoutgv; /* *STDOUT */ |
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174 | static SV *rv_diehook; |
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175 | static SV *rv_warnhook; |
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176 | static HV *hv_sig; /* %SIG */ |
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177 | |
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178 | /* async_pool helper stuff */ |
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179 | static SV *sv_pool_rss; |
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180 | static SV *sv_pool_size; |
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181 | static AV *av_async_pool; |
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182 | |
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183 | /* Coro::AnyEvent */ |
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184 | static SV *sv_activity; |
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185 | |
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186 | static struct coro_cctx *cctx_first; |
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187 | static int cctx_count, cctx_idle; |
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188 | |
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189 | enum { |
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190 | CC_MAPPED = 0x01, |
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191 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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192 | CC_TRACE = 0x04, |
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193 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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194 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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195 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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196 | }; |
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197 | |
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198 | /* this is a structure representing a c-level coroutine */ |
93 | typedef struct { |
199 | typedef struct coro_cctx |
94 | int refcnt; /* pointer reference counter */ |
200 | { |
95 | int usecnt; /* shared by how many coroutines */ |
201 | struct coro_cctx *next; |
96 | int gencnt; /* generation counter */ |
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97 | |
202 | |
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203 | /* the stack */ |
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204 | void *sptr; |
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205 | size_t ssize; |
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206 | |
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207 | /* cpu state */ |
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208 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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209 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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210 | JMPENV *top_env; |
98 | coro_context cctx; |
211 | coro_context cctx; |
99 | |
212 | |
100 | void *sptr; |
213 | U32 gen; |
101 | long ssize; /* positive == mmap, otherwise malloc */ |
214 | #if CORO_USE_VALGRIND |
102 | } coro_stack; |
215 | int valgrind_id; |
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216 | #endif |
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217 | unsigned char flags; |
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218 | } coro_cctx; |
103 | |
219 | |
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220 | enum { |
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221 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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222 | CF_READY = 0x0002, /* coroutine is ready */ |
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223 | CF_NEW = 0x0004, /* has never been switched to */ |
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224 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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225 | }; |
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226 | |
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227 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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228 | typedef struct |
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229 | { |
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230 | SV *defsv; |
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231 | AV *defav; |
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232 | SV *errsv; |
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233 | SV *irsgv; |
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234 | #define VAR(name,type) type name; |
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235 | # include "state.h" |
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236 | #undef VAR |
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237 | } perl_slots; |
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238 | |
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239 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
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240 | |
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241 | /* this is a structure representing a perl-level coroutine */ |
104 | struct coro { |
242 | struct coro { |
105 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
243 | /* the C coroutine allocated to this perl coroutine, if any */ |
106 | JMPENV start_env; |
244 | coro_cctx *cctx; |
107 | |
245 | |
108 | /* the optional C context */ |
246 | /* state data */ |
109 | coro_stack *stack; |
247 | struct CoroSLF slf_frame; /* saved slf frame */ |
110 | void *cursp; |
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111 | int gencnt; |
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112 | |
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113 | /* optionally saved, might be zero */ |
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114 | AV *defav; |
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115 | SV *defsv; |
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116 | SV *errsv; |
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117 | |
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118 | /* saved global state not related to stacks */ |
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119 | U8 dowarn; |
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120 | I32 in_eval; |
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121 | |
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122 | /* the stacks and related info (callchain etc..) */ |
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123 | PERL_SI *curstackinfo; |
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124 | AV *curstack; |
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125 | AV *mainstack; |
248 | AV *mainstack; |
126 | SV **stack_sp; |
249 | perl_slots *slot; /* basically the saved sp */ |
127 | OP *op; |
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128 | SV **curpad; |
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129 | AV *comppad; |
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130 | CV *compcv; |
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131 | SV **stack_base; |
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132 | SV **stack_max; |
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133 | SV **tmps_stack; |
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134 | I32 tmps_floor; |
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135 | I32 tmps_ix; |
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136 | I32 tmps_max; |
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137 | I32 *markstack; |
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138 | I32 *markstack_ptr; |
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139 | I32 *markstack_max; |
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140 | I32 *scopestack; |
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141 | I32 scopestack_ix; |
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142 | I32 scopestack_max; |
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143 | ANY *savestack; |
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144 | I32 savestack_ix; |
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145 | I32 savestack_max; |
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146 | OP **retstack; |
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147 | I32 retstack_ix; |
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148 | I32 retstack_max; |
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149 | PMOP *curpm; |
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150 | COP *curcop; |
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151 | JMPENV *top_env; |
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152 | |
250 | |
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251 | CV *startcv; /* the CV to execute */ |
153 | /* data associated with this coroutine (initial args) */ |
252 | AV *args; /* data associated with this coroutine (initial args) */ |
154 | AV *args; |
253 | int refcnt; /* coroutines are refcounted, yes */ |
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254 | int flags; /* CF_ flags */ |
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255 | HV *hv; /* the perl hash associated with this coro, if any */ |
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256 | void (*on_destroy)(pTHX_ struct coro *coro); |
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257 | |
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258 | /* statistics */ |
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259 | int usecount; /* number of transfers to this coro */ |
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260 | |
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261 | /* coro process data */ |
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262 | int prio; |
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263 | SV *except; /* exception to be thrown */ |
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264 | SV *rouse_cb; |
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265 | |
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266 | /* async_pool */ |
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267 | SV *saved_deffh; |
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268 | |
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269 | /* linked list */ |
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270 | struct coro *next, *prev; |
155 | }; |
271 | }; |
156 | |
272 | |
157 | typedef struct coro *Coro__State; |
273 | typedef struct coro *Coro__State; |
158 | typedef struct coro *Coro__State_or_hashref; |
274 | typedef struct coro *Coro__State_or_hashref; |
159 | |
275 | |
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276 | /* the following variables are effectively part of the perl context */ |
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277 | /* and get copied between struct coro and these variables */ |
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278 | /* the mainr easonw e don't support windows process emulation */ |
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279 | static struct CoroSLF slf_frame; /* the current slf frame */ |
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280 | |
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281 | /** Coro ********************************************************************/ |
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282 | |
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283 | #define PRIO_MAX 3 |
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284 | #define PRIO_HIGH 1 |
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285 | #define PRIO_NORMAL 0 |
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286 | #define PRIO_LOW -1 |
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287 | #define PRIO_IDLE -3 |
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288 | #define PRIO_MIN -4 |
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289 | |
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290 | /* for Coro.pm */ |
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291 | static SV *coro_current; |
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292 | static SV *coro_readyhook; |
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293 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
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294 | static struct coro *coro_first; |
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295 | #define coro_nready coroapi.nready |
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296 | |
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297 | /** lowlevel stuff **********************************************************/ |
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298 | |
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299 | static SV * |
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300 | coro_get_sv (pTHX_ const char *name, int create) |
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301 | { |
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302 | #if PERL_VERSION_ATLEAST (5,10,0) |
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303 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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304 | get_sv (name, create); |
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305 | #endif |
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306 | return get_sv (name, create); |
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307 | } |
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308 | |
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309 | static AV * |
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310 | coro_get_av (pTHX_ const char *name, int create) |
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311 | { |
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312 | #if PERL_VERSION_ATLEAST (5,10,0) |
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313 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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314 | get_av (name, create); |
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315 | #endif |
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316 | return get_av (name, create); |
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317 | } |
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318 | |
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319 | static HV * |
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320 | coro_get_hv (pTHX_ const char *name, int create) |
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321 | { |
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322 | #if PERL_VERSION_ATLEAST (5,10,0) |
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323 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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324 | get_hv (name, create); |
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325 | #endif |
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326 | return get_hv (name, create); |
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327 | } |
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328 | |
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329 | /* may croak */ |
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330 | INLINE CV * |
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331 | coro_sv_2cv (SV *sv) |
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332 | { |
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333 | HV *st; |
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334 | GV *gvp; |
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335 | return sv_2cv (sv, &st, &gvp, 0); |
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336 | } |
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337 | |
160 | static AV * |
338 | static AV * |
161 | coro_clone_padlist (pTHX_ CV *cv) |
339 | coro_clone_padlist (pTHX_ CV *cv) |
162 | { |
340 | { |
163 | AV *padlist = CvPADLIST (cv); |
341 | AV *padlist = CvPADLIST (cv); |
164 | AV *newpadlist, *newpad; |
342 | AV *newpadlist, *newpad; |
165 | |
343 | |
166 | newpadlist = newAV (); |
344 | newpadlist = newAV (); |
167 | AvREAL_off (newpadlist); |
345 | AvREAL_off (newpadlist); |
168 | #if PERL_VERSION < 9 |
346 | #if PERL_VERSION_ATLEAST (5,10,0) |
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347 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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348 | #else |
169 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
349 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
170 | #else |
|
|
171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
172 | #endif |
350 | #endif |
173 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
351 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
174 | --AvFILLp (padlist); |
352 | --AvFILLp (padlist); |
175 | |
353 | |
176 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
354 | av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
177 | av_store (newpadlist, 1, (SV *)newpad); |
355 | av_store (newpadlist, 1, (SV *)newpad); |
178 | |
356 | |
179 | return newpadlist; |
357 | return newpadlist; |
180 | } |
358 | } |
181 | |
359 | |
… | |
… | |
211 | |
389 | |
212 | /* casting is fun. */ |
390 | /* casting is fun. */ |
213 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
391 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
214 | free_padlist (aTHX_ padlist); |
392 | free_padlist (aTHX_ padlist); |
215 | |
393 | |
216 | SvREFCNT_dec (av); |
394 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
217 | |
395 | |
218 | return 0; |
396 | return 0; |
219 | } |
397 | } |
220 | |
398 | |
|
|
399 | #define CORO_MAGIC_type_cv 26 |
221 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
400 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
222 | |
401 | |
223 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
402 | static MGVTBL coro_cv_vtbl = { |
|
|
403 | 0, 0, 0, 0, |
|
|
404 | coro_cv_free |
|
|
405 | }; |
|
|
406 | |
|
|
407 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
408 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
409 | ? SvMAGIC (sv) \ |
|
|
410 | : mg_find (sv, type)) |
|
|
411 | |
|
|
412 | #define CORO_MAGIC(sv, type) \ |
|
|
413 | (expect_true (SvMAGIC (sv)) \ |
|
|
414 | ? CORO_MAGIC_NN (sv, type) \ |
|
|
415 | : 0) |
|
|
416 | |
|
|
417 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
418 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
419 | |
|
|
420 | INLINE struct coro * |
|
|
421 | SvSTATE_ (pTHX_ SV *coro) |
|
|
422 | { |
|
|
423 | HV *stash; |
|
|
424 | MAGIC *mg; |
|
|
425 | |
|
|
426 | if (SvROK (coro)) |
|
|
427 | coro = SvRV (coro); |
|
|
428 | |
|
|
429 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
430 | croak ("Coro::State object required"); |
|
|
431 | |
|
|
432 | stash = SvSTASH (coro); |
|
|
433 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
434 | { |
|
|
435 | /* very slow, but rare, check */ |
|
|
436 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
437 | croak ("Coro::State object required"); |
|
|
438 | } |
|
|
439 | |
|
|
440 | mg = CORO_MAGIC_state (coro); |
|
|
441 | return (struct coro *)mg->mg_ptr; |
|
|
442 | } |
|
|
443 | |
|
|
444 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
445 | |
|
|
446 | /* faster than SvSTATE, but expects a coroutine hv */ |
|
|
447 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
|
|
448 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
224 | |
449 | |
225 | /* the next two functions merely cache the padlists */ |
450 | /* the next two functions merely cache the padlists */ |
226 | static void |
451 | static void |
227 | get_padlist (pTHX_ CV *cv) |
452 | get_padlist (pTHX_ CV *cv) |
228 | { |
453 | { |
229 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
454 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
455 | AV *av; |
230 | |
456 | |
231 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
457 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
232 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
458 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
233 | else |
459 | else |
234 | { |
460 | { |
235 | #if 0 |
461 | #if CORO_PREFER_PERL_FUNCTIONS |
236 | /* this should work - but it doesn't :( */ |
462 | /* this is probably cleaner? but also slower! */ |
|
|
463 | /* in practise, it seems to be less stable */ |
237 | CV *cp = Perl_cv_clone (aTHX_ cv); |
464 | CV *cp = Perl_cv_clone (aTHX_ cv); |
238 | CvPADLIST (cv) = CvPADLIST (cp); |
465 | CvPADLIST (cv) = CvPADLIST (cp); |
239 | CvPADLIST (cp) = 0; |
466 | CvPADLIST (cp) = 0; |
240 | SvREFCNT_dec (cp); |
467 | SvREFCNT_dec (cp); |
241 | #else |
468 | #else |
… | |
… | |
245 | } |
472 | } |
246 | |
473 | |
247 | static void |
474 | static void |
248 | put_padlist (pTHX_ CV *cv) |
475 | put_padlist (pTHX_ CV *cv) |
249 | { |
476 | { |
250 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
477 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
478 | AV *av; |
251 | |
479 | |
252 | if (!mg) |
480 | if (expect_false (!mg)) |
253 | { |
481 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
254 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
|
|
255 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
256 | mg->mg_virtual = &vtbl_coro; |
|
|
257 | mg->mg_obj = (SV *)newAV (); |
|
|
258 | } |
|
|
259 | |
482 | |
260 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
483 | av = (AV *)mg->mg_obj; |
261 | } |
|
|
262 | |
484 | |
263 | #define SB do { |
485 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
264 | #define SE } while (0) |
486 | av_extend (av, AvMAX (av) + 1); |
265 | |
487 | |
266 | #define LOAD(state) load_state(aTHX_ (state)); |
488 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
267 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
489 | } |
268 | |
490 | |
269 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
491 | /** load & save, init *******************************************************/ |
270 | |
492 | |
271 | static void |
493 | static void |
272 | load_state(pTHX_ Coro__State c) |
494 | load_perl (pTHX_ Coro__State c) |
273 | { |
495 | { |
274 | PL_dowarn = c->dowarn; |
496 | perl_slots *slot = c->slot; |
275 | PL_in_eval = c->in_eval; |
497 | c->slot = 0; |
276 | |
498 | |
277 | PL_curstackinfo = c->curstackinfo; |
|
|
278 | PL_curstack = c->curstack; |
|
|
279 | PL_mainstack = c->mainstack; |
499 | PL_mainstack = c->mainstack; |
280 | PL_stack_sp = c->stack_sp; |
|
|
281 | PL_op = c->op; |
|
|
282 | PL_curpad = c->curpad; |
|
|
283 | PL_comppad = c->comppad; |
|
|
284 | PL_compcv = c->compcv; |
|
|
285 | PL_stack_base = c->stack_base; |
|
|
286 | PL_stack_max = c->stack_max; |
|
|
287 | PL_tmps_stack = c->tmps_stack; |
|
|
288 | PL_tmps_floor = c->tmps_floor; |
|
|
289 | PL_tmps_ix = c->tmps_ix; |
|
|
290 | PL_tmps_max = c->tmps_max; |
|
|
291 | PL_markstack = c->markstack; |
|
|
292 | PL_markstack_ptr = c->markstack_ptr; |
|
|
293 | PL_markstack_max = c->markstack_max; |
|
|
294 | PL_scopestack = c->scopestack; |
|
|
295 | PL_scopestack_ix = c->scopestack_ix; |
|
|
296 | PL_scopestack_max = c->scopestack_max; |
|
|
297 | PL_savestack = c->savestack; |
|
|
298 | PL_savestack_ix = c->savestack_ix; |
|
|
299 | PL_savestack_max = c->savestack_max; |
|
|
300 | #if PERL_VERSION < 9 |
|
|
301 | PL_retstack = c->retstack; |
|
|
302 | PL_retstack_ix = c->retstack_ix; |
|
|
303 | PL_retstack_max = c->retstack_max; |
|
|
304 | #endif |
|
|
305 | PL_curpm = c->curpm; |
|
|
306 | PL_curcop = c->curcop; |
|
|
307 | PL_top_env = c->top_env; |
|
|
308 | |
500 | |
309 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
501 | GvSV (PL_defgv) = slot->defsv; |
310 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
502 | GvAV (PL_defgv) = slot->defav; |
311 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
503 | GvSV (PL_errgv) = slot->errsv; |
|
|
504 | GvSV (irsgv) = slot->irsgv; |
|
|
505 | |
|
|
506 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
507 | # include "state.h" |
|
|
508 | #undef VAR |
312 | |
509 | |
313 | { |
510 | { |
314 | dSP; |
511 | dSP; |
|
|
512 | |
315 | CV *cv; |
513 | CV *cv; |
316 | |
514 | |
317 | /* now do the ugly restore mess */ |
515 | /* now do the ugly restore mess */ |
318 | while ((cv = (CV *)POPs)) |
516 | while (expect_true (cv = (CV *)POPs)) |
319 | { |
517 | { |
320 | AV *padlist = (AV *)POPs; |
|
|
321 | |
|
|
322 | if (padlist) |
|
|
323 | { |
|
|
324 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
518 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
325 | CvPADLIST(cv) = padlist; |
519 | CvDEPTH (cv) = PTR2IV (POPs); |
326 | } |
520 | CvPADLIST (cv) = (AV *)POPs; |
327 | |
|
|
328 | ++CvDEPTH(cv); |
|
|
329 | } |
521 | } |
330 | |
522 | |
331 | PUTBACK; |
523 | PUTBACK; |
332 | } |
524 | } |
333 | } |
|
|
334 | |
525 | |
|
|
526 | slf_frame = c->slf_frame; |
|
|
527 | CORO_THROW = c->except; |
|
|
528 | } |
|
|
529 | |
335 | static void |
530 | static void |
336 | save_state(pTHX_ Coro__State c, int flags) |
531 | save_perl (pTHX_ Coro__State c) |
337 | { |
532 | { |
|
|
533 | c->except = CORO_THROW; |
|
|
534 | c->slf_frame = slf_frame; |
|
|
535 | |
338 | { |
536 | { |
339 | dSP; |
537 | dSP; |
340 | I32 cxix = cxstack_ix; |
538 | I32 cxix = cxstack_ix; |
341 | PERL_CONTEXT *ccstk = cxstack; |
539 | PERL_CONTEXT *ccstk = cxstack; |
342 | PERL_SI *top_si = PL_curstackinfo; |
540 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
344 | /* |
542 | /* |
345 | * the worst thing you can imagine happens first - we have to save |
543 | * the worst thing you can imagine happens first - we have to save |
346 | * (and reinitialize) all cv's in the whole callchain :( |
544 | * (and reinitialize) all cv's in the whole callchain :( |
347 | */ |
545 | */ |
348 | |
546 | |
349 | PUSHs (Nullsv); |
547 | XPUSHs (Nullsv); |
350 | /* this loop was inspired by pp_caller */ |
548 | /* this loop was inspired by pp_caller */ |
351 | for (;;) |
549 | for (;;) |
352 | { |
550 | { |
353 | while (cxix >= 0) |
551 | while (expect_true (cxix >= 0)) |
354 | { |
552 | { |
355 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
553 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
356 | |
554 | |
357 | if (CxTYPE(cx) == CXt_SUB) |
555 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
358 | { |
556 | { |
359 | CV *cv = cx->blk_sub.cv; |
557 | CV *cv = cx->blk_sub.cv; |
|
|
558 | |
360 | if (CvDEPTH(cv)) |
559 | if (expect_true (CvDEPTH (cv))) |
361 | { |
560 | { |
362 | EXTEND (SP, CvDEPTH(cv)*2); |
561 | EXTEND (SP, 3); |
363 | |
|
|
364 | while (--CvDEPTH(cv)) |
|
|
365 | { |
|
|
366 | /* this tells the restore code to increment CvDEPTH */ |
|
|
367 | PUSHs (Nullsv); |
|
|
368 | PUSHs ((SV *)cv); |
|
|
369 | } |
|
|
370 | |
|
|
371 | PUSHs ((SV *)CvPADLIST(cv)); |
562 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
563 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
372 | PUSHs ((SV *)cv); |
564 | PUSHs ((SV *)cv); |
373 | |
565 | |
|
|
566 | CvDEPTH (cv) = 0; |
374 | get_padlist (aTHX_ cv); |
567 | get_padlist (aTHX_ cv); |
375 | } |
568 | } |
376 | } |
569 | } |
377 | #ifdef CXt_FORMAT |
|
|
378 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
379 | { |
|
|
380 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
381 | /* my bold guess is as a simple, plain sub... */ |
|
|
382 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
383 | } |
|
|
384 | #endif |
|
|
385 | } |
570 | } |
386 | |
571 | |
387 | if (top_si->si_type == PERLSI_MAIN) |
572 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
388 | break; |
573 | break; |
389 | |
574 | |
390 | top_si = top_si->si_prev; |
575 | top_si = top_si->si_prev; |
391 | ccstk = top_si->si_cxstack; |
576 | ccstk = top_si->si_cxstack; |
392 | cxix = top_si->si_cxix; |
577 | cxix = top_si->si_cxix; |
393 | } |
578 | } |
394 | |
579 | |
395 | PUTBACK; |
580 | PUTBACK; |
396 | } |
581 | } |
397 | |
582 | |
398 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
583 | /* allocate some space on the context stack for our purposes */ |
399 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
584 | /* we manually unroll here, as usually 2 slots is enough */ |
400 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
585 | if (SLOT_COUNT >= 1) CXINC; |
|
|
586 | if (SLOT_COUNT >= 2) CXINC; |
|
|
587 | if (SLOT_COUNT >= 3) CXINC; |
|
|
588 | { |
|
|
589 | int i; |
|
|
590 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
591 | CXINC; |
|
|
592 | } |
|
|
593 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
401 | |
594 | |
402 | c->dowarn = PL_dowarn; |
|
|
403 | c->in_eval = PL_in_eval; |
|
|
404 | |
|
|
405 | c->curstackinfo = PL_curstackinfo; |
|
|
406 | c->curstack = PL_curstack; |
|
|
407 | c->mainstack = PL_mainstack; |
595 | c->mainstack = PL_mainstack; |
408 | c->stack_sp = PL_stack_sp; |
596 | |
409 | c->op = PL_op; |
597 | { |
410 | c->curpad = PL_curpad; |
598 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
411 | c->comppad = PL_comppad; |
599 | |
412 | c->compcv = PL_compcv; |
600 | slot->defav = GvAV (PL_defgv); |
413 | c->stack_base = PL_stack_base; |
601 | slot->defsv = DEFSV; |
414 | c->stack_max = PL_stack_max; |
602 | slot->errsv = ERRSV; |
415 | c->tmps_stack = PL_tmps_stack; |
603 | slot->irsgv = GvSV (irsgv); |
416 | c->tmps_floor = PL_tmps_floor; |
604 | |
417 | c->tmps_ix = PL_tmps_ix; |
605 | #define VAR(name,type) slot->name = PL_ ## name; |
418 | c->tmps_max = PL_tmps_max; |
606 | # include "state.h" |
419 | c->markstack = PL_markstack; |
607 | #undef VAR |
420 | c->markstack_ptr = PL_markstack_ptr; |
608 | } |
421 | c->markstack_max = PL_markstack_max; |
|
|
422 | c->scopestack = PL_scopestack; |
|
|
423 | c->scopestack_ix = PL_scopestack_ix; |
|
|
424 | c->scopestack_max = PL_scopestack_max; |
|
|
425 | c->savestack = PL_savestack; |
|
|
426 | c->savestack_ix = PL_savestack_ix; |
|
|
427 | c->savestack_max = PL_savestack_max; |
|
|
428 | #if PERL_VERSION < 9 |
|
|
429 | c->retstack = PL_retstack; |
|
|
430 | c->retstack_ix = PL_retstack_ix; |
|
|
431 | c->retstack_max = PL_retstack_max; |
|
|
432 | #endif |
|
|
433 | c->curpm = PL_curpm; |
|
|
434 | c->curcop = PL_curcop; |
|
|
435 | c->top_env = PL_top_env; |
|
|
436 | } |
609 | } |
437 | |
610 | |
438 | /* |
611 | /* |
439 | * allocate various perl stacks. This is an exact copy |
612 | * allocate various perl stacks. This is almost an exact copy |
440 | * of perl.c:init_stacks, except that it uses less memory |
613 | * of perl.c:init_stacks, except that it uses less memory |
441 | * on the (sometimes correct) assumption that coroutines do |
614 | * on the (sometimes correct) assumption that coroutines do |
442 | * not usually need a lot of stackspace. |
615 | * not usually need a lot of stackspace. |
443 | */ |
616 | */ |
|
|
617 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
618 | # define coro_init_stacks(thx) init_stacks () |
|
|
619 | #else |
444 | static void |
620 | static void |
445 | coro_init_stacks (pTHX) |
621 | coro_init_stacks (pTHX) |
446 | { |
622 | { |
447 | LOCK; |
623 | PL_curstackinfo = new_stackinfo(32, 8); |
448 | |
|
|
449 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
450 | PL_curstackinfo->si_type = PERLSI_MAIN; |
624 | PL_curstackinfo->si_type = PERLSI_MAIN; |
451 | PL_curstack = PL_curstackinfo->si_stack; |
625 | PL_curstack = PL_curstackinfo->si_stack; |
452 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
626 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
453 | |
627 | |
454 | PL_stack_base = AvARRAY(PL_curstack); |
628 | PL_stack_base = AvARRAY(PL_curstack); |
455 | PL_stack_sp = PL_stack_base; |
629 | PL_stack_sp = PL_stack_base; |
456 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
630 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
457 | |
631 | |
458 | New(50,PL_tmps_stack,96,SV*); |
632 | New(50,PL_tmps_stack,32,SV*); |
459 | PL_tmps_floor = -1; |
633 | PL_tmps_floor = -1; |
460 | PL_tmps_ix = -1; |
634 | PL_tmps_ix = -1; |
461 | PL_tmps_max = 96; |
635 | PL_tmps_max = 32; |
462 | |
636 | |
463 | New(54,PL_markstack,16,I32); |
637 | New(54,PL_markstack,16,I32); |
464 | PL_markstack_ptr = PL_markstack; |
638 | PL_markstack_ptr = PL_markstack; |
465 | PL_markstack_max = PL_markstack + 16; |
639 | PL_markstack_max = PL_markstack + 16; |
466 | |
640 | |
467 | #ifdef SET_MARK_OFFSET |
641 | #ifdef SET_MARK_OFFSET |
468 | SET_MARK_OFFSET; |
642 | SET_MARK_OFFSET; |
469 | #endif |
643 | #endif |
470 | |
644 | |
471 | New(54,PL_scopestack,16,I32); |
645 | New(54,PL_scopestack,8,I32); |
472 | PL_scopestack_ix = 0; |
646 | PL_scopestack_ix = 0; |
473 | PL_scopestack_max = 16; |
647 | PL_scopestack_max = 8; |
474 | |
648 | |
475 | New(54,PL_savestack,96,ANY); |
649 | New(54,PL_savestack,24,ANY); |
476 | PL_savestack_ix = 0; |
650 | PL_savestack_ix = 0; |
477 | PL_savestack_max = 96; |
651 | PL_savestack_max = 24; |
478 | |
652 | |
479 | #if PERL_VERSION < 9 |
653 | #if !PERL_VERSION_ATLEAST (5,10,0) |
480 | New(54,PL_retstack,8,OP*); |
654 | New(54,PL_retstack,4,OP*); |
481 | PL_retstack_ix = 0; |
655 | PL_retstack_ix = 0; |
482 | PL_retstack_max = 8; |
656 | PL_retstack_max = 4; |
483 | #endif |
657 | #endif |
484 | |
|
|
485 | UNLOCK; |
|
|
486 | } |
658 | } |
|
|
659 | #endif |
487 | |
660 | |
488 | /* |
661 | /* |
489 | * destroy the stacks, the callchain etc... |
662 | * destroy the stacks, the callchain etc... |
490 | */ |
663 | */ |
491 | static void |
664 | static void |
492 | destroy_stacks(pTHX) |
665 | coro_destruct_stacks (pTHX) |
493 | { |
666 | { |
494 | if (!IN_DESTRUCT) |
|
|
495 | { |
|
|
496 | /* is this ugly, I ask? */ |
|
|
497 | LEAVE_SCOPE (0); |
|
|
498 | |
|
|
499 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
500 | FREETMPS; |
|
|
501 | |
|
|
502 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
503 | } |
|
|
504 | |
|
|
505 | while (PL_curstackinfo->si_next) |
667 | while (PL_curstackinfo->si_next) |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
668 | PL_curstackinfo = PL_curstackinfo->si_next; |
507 | |
669 | |
508 | while (PL_curstackinfo) |
670 | while (PL_curstackinfo) |
509 | { |
671 | { |
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
672 | PERL_SI *p = PL_curstackinfo->si_prev; |
511 | |
673 | |
512 | { /*D*//*remove*/ |
|
|
513 | dSP; |
|
|
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
515 | PUTBACK; /* possibly superfluous */ |
|
|
516 | } |
|
|
517 | |
|
|
518 | if (!IN_DESTRUCT) |
674 | if (!IN_DESTRUCT) |
519 | { |
|
|
520 | dounwind (-1);/*D*//*remove*/ |
|
|
521 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
675 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
522 | } |
|
|
523 | |
676 | |
524 | Safefree (PL_curstackinfo->si_cxstack); |
677 | Safefree (PL_curstackinfo->si_cxstack); |
525 | Safefree (PL_curstackinfo); |
678 | Safefree (PL_curstackinfo); |
526 | PL_curstackinfo = p; |
679 | PL_curstackinfo = p; |
527 | } |
680 | } |
528 | |
681 | |
529 | Safefree (PL_tmps_stack); |
682 | Safefree (PL_tmps_stack); |
530 | Safefree (PL_markstack); |
683 | Safefree (PL_markstack); |
531 | Safefree (PL_scopestack); |
684 | Safefree (PL_scopestack); |
532 | Safefree (PL_savestack); |
685 | Safefree (PL_savestack); |
533 | #if PERL_VERSION < 9 |
686 | #if !PERL_VERSION_ATLEAST (5,10,0) |
534 | Safefree (PL_retstack); |
687 | Safefree (PL_retstack); |
535 | #endif |
688 | #endif |
536 | } |
689 | } |
537 | |
690 | |
538 | static void |
691 | static size_t |
539 | allocate_stack (Coro__State ctx, int alloc) |
692 | coro_rss (pTHX_ struct coro *coro) |
540 | { |
693 | { |
541 | coro_stack *stack; |
694 | size_t rss = sizeof (*coro); |
542 | |
695 | |
543 | New (0, stack, 1, coro_stack); |
696 | if (coro->mainstack) |
544 | |
|
|
545 | stack->refcnt = 1; |
|
|
546 | stack->usecnt = 1; |
|
|
547 | stack->gencnt = ctx->gencnt = 0; |
|
|
548 | |
|
|
549 | if (alloc) |
|
|
550 | { |
697 | { |
551 | #if HAVE_MMAP |
698 | perl_slots tmp_slot; |
552 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
699 | perl_slots *slot; |
553 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
700 | |
554 | if (stack->sptr != (void *)-1) |
701 | if (coro->flags & CF_RUNNING) |
555 | { |
702 | { |
556 | # if STACKGUARD |
703 | slot = &tmp_slot; |
557 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
704 | |
558 | # endif |
705 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
706 | # include "state.h" |
|
|
707 | #undef VAR |
559 | } |
708 | } |
560 | else |
709 | else |
561 | #endif |
710 | slot = coro->slot; |
|
|
711 | |
|
|
712 | if (slot) |
562 | { |
713 | { |
563 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
714 | rss += sizeof (slot->curstackinfo); |
564 | New (0, stack->sptr, STACKSIZE, long); |
715 | rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
|
|
716 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
|
|
717 | rss += slot->tmps_max * sizeof (SV *); |
|
|
718 | rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
|
|
719 | rss += slot->scopestack_max * sizeof (I32); |
|
|
720 | rss += slot->savestack_max * sizeof (ANY); |
|
|
721 | |
|
|
722 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
723 | rss += slot->retstack_max * sizeof (OP *); |
|
|
724 | #endif |
565 | } |
725 | } |
566 | } |
726 | } |
567 | else |
|
|
568 | stack->sptr = 0; |
|
|
569 | |
727 | |
570 | ctx->stack = stack; |
728 | return rss; |
571 | } |
729 | } |
572 | |
730 | |
|
|
731 | /** coroutine stack handling ************************************************/ |
|
|
732 | |
|
|
733 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
734 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
735 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
736 | |
|
|
737 | /* apparently < 5.8.8 */ |
|
|
738 | #ifndef MgPV_nolen_const |
|
|
739 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
740 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
741 | (const char*)(mg)->mg_ptr) |
|
|
742 | #endif |
|
|
743 | |
|
|
744 | /* |
|
|
745 | * This overrides the default magic get method of %SIG elements. |
|
|
746 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
747 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
748 | * readback here. |
|
|
749 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
750 | * not expecting this to actually change the hook. This is a potential problem |
|
|
751 | * when a schedule happens then, but we ignore this. |
|
|
752 | */ |
573 | static void |
753 | static int |
574 | deallocate_stack (Coro__State ctx) |
754 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
575 | { |
755 | { |
576 | coro_stack *stack = ctx->stack; |
756 | const char *s = MgPV_nolen_const (mg); |
577 | |
757 | |
578 | ctx->stack = 0; |
758 | if (*s == '_') |
579 | |
|
|
580 | if (stack) |
|
|
581 | { |
759 | { |
582 | if (!--stack->refcnt) |
760 | SV **svp = 0; |
|
|
761 | |
|
|
762 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
763 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
764 | |
|
|
765 | if (svp) |
583 | { |
766 | { |
584 | #ifdef HAVE_MMAP |
767 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
585 | if (stack->ssize > 0 && stack->sptr) |
768 | return 0; |
586 | munmap (stack->sptr, stack->ssize); |
|
|
587 | else |
|
|
588 | #endif |
|
|
589 | Safefree (stack->sptr); |
|
|
590 | |
|
|
591 | Safefree (stack); |
|
|
592 | } |
769 | } |
593 | else if (ctx->gencnt == stack->gencnt) |
770 | } |
594 | --stack->usecnt; |
771 | |
|
|
772 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
773 | } |
|
|
774 | |
|
|
775 | static int |
|
|
776 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
777 | { |
|
|
778 | const char *s = MgPV_nolen_const (mg); |
|
|
779 | |
|
|
780 | if (*s == '_') |
595 | } |
781 | { |
596 | } |
782 | SV **svp = 0; |
597 | |
783 | |
|
|
784 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
785 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
786 | |
|
|
787 | if (svp) |
|
|
788 | { |
|
|
789 | SV *old = *svp; |
|
|
790 | *svp = 0; |
|
|
791 | SvREFCNT_dec (old); |
|
|
792 | return 0; |
|
|
793 | } |
|
|
794 | } |
|
|
795 | |
|
|
796 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
797 | } |
|
|
798 | |
598 | static void |
799 | static int |
599 | setup_coro (void *arg) |
800 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
801 | { |
|
|
802 | const char *s = MgPV_nolen_const (mg); |
|
|
803 | |
|
|
804 | if (*s == '_') |
|
|
805 | { |
|
|
806 | SV **svp = 0; |
|
|
807 | |
|
|
808 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
809 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
810 | |
|
|
811 | if (svp) |
|
|
812 | { |
|
|
813 | SV *old = *svp; |
|
|
814 | *svp = newSVsv (sv); |
|
|
815 | SvREFCNT_dec (old); |
|
|
816 | return 0; |
|
|
817 | } |
|
|
818 | } |
|
|
819 | |
|
|
820 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
821 | } |
|
|
822 | |
|
|
823 | static void |
|
|
824 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
825 | { |
|
|
826 | /* kind of mega-hacky, but works */ |
|
|
827 | ta->next = ta->prev = (struct coro *)ta; |
|
|
828 | } |
|
|
829 | |
|
|
830 | static int |
|
|
831 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
832 | { |
|
|
833 | return 0; |
|
|
834 | } |
|
|
835 | |
|
|
836 | static UNOP coro_setup_op; |
|
|
837 | |
|
|
838 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
839 | coro_setup (pTHX_ struct coro *coro) |
600 | { |
840 | { |
601 | /* |
841 | /* |
602 | * emulate part of the perl startup here. |
842 | * emulate part of the perl startup here. |
603 | */ |
843 | */ |
604 | dTHX; |
|
|
605 | dSP; |
|
|
606 | Coro__State ctx = (Coro__State)arg; |
|
|
607 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
|
|
608 | |
|
|
609 | coro_init_stacks (aTHX); |
844 | coro_init_stacks (aTHX); |
610 | /*PL_curcop = 0;*/ |
845 | |
611 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
846 | PL_runops = RUNOPS_DEFAULT; |
|
|
847 | PL_curcop = &PL_compiling; |
|
|
848 | PL_in_eval = EVAL_NULL; |
|
|
849 | PL_comppad = 0; |
|
|
850 | PL_curpm = 0; |
|
|
851 | PL_curpad = 0; |
|
|
852 | PL_localizing = 0; |
|
|
853 | PL_dirty = 0; |
|
|
854 | PL_restartop = 0; |
|
|
855 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
856 | PL_parser = 0; |
|
|
857 | #endif |
|
|
858 | |
|
|
859 | /* recreate the die/warn hooks */ |
|
|
860 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
861 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
862 | |
|
|
863 | GvSV (PL_defgv) = newSV (0); |
|
|
864 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
865 | GvSV (PL_errgv) = newSV (0); |
|
|
866 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
867 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
868 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
869 | |
|
|
870 | { |
|
|
871 | dSP; |
|
|
872 | UNOP myop; |
|
|
873 | |
|
|
874 | Zero (&myop, 1, UNOP); |
|
|
875 | myop.op_next = Nullop; |
|
|
876 | myop.op_flags = OPf_WANT_VOID; |
|
|
877 | |
|
|
878 | PUSHMARK (SP); |
|
|
879 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
|
|
880 | PUTBACK; |
|
|
881 | PL_op = (OP *)&myop; |
|
|
882 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
883 | SPAGAIN; |
|
|
884 | } |
|
|
885 | |
|
|
886 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
887 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
888 | */ |
|
|
889 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
890 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
891 | |
|
|
892 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
893 | coro_setup_op.op_next = PL_op; |
|
|
894 | coro_setup_op.op_type = OP_CUSTOM; |
|
|
895 | coro_setup_op.op_ppaddr = pp_slf; |
|
|
896 | /* no flags required, as an init function won't be called */ |
|
|
897 | |
|
|
898 | PL_op = (OP *)&coro_setup_op; |
|
|
899 | |
|
|
900 | /* copy throw, in case it was set before coro_setup */ |
|
|
901 | CORO_THROW = coro->except; |
|
|
902 | } |
|
|
903 | |
|
|
904 | static void |
|
|
905 | coro_destruct (pTHX_ struct coro *coro) |
|
|
906 | { |
|
|
907 | if (!IN_DESTRUCT) |
|
|
908 | { |
|
|
909 | /* restore all saved variables and stuff */ |
|
|
910 | LEAVE_SCOPE (0); |
|
|
911 | assert (PL_tmps_floor == -1); |
|
|
912 | |
|
|
913 | /* free all temporaries */ |
|
|
914 | FREETMPS; |
|
|
915 | assert (PL_tmps_ix == -1); |
|
|
916 | |
|
|
917 | /* unwind all extra stacks */ |
|
|
918 | POPSTACK_TO (PL_mainstack); |
|
|
919 | |
|
|
920 | /* unwind main stack */ |
|
|
921 | dounwind (-1); |
|
|
922 | } |
|
|
923 | |
|
|
924 | SvREFCNT_dec (GvSV (PL_defgv)); |
612 | SvREFCNT_dec (GvAV (PL_defgv)); |
925 | SvREFCNT_dec (GvAV (PL_defgv)); |
613 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
926 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
927 | SvREFCNT_dec (PL_defoutgv); |
|
|
928 | SvREFCNT_dec (PL_rs); |
|
|
929 | SvREFCNT_dec (GvSV (irsgv)); |
614 | |
930 | |
615 | SPAGAIN; |
931 | SvREFCNT_dec (PL_diehook); |
|
|
932 | SvREFCNT_dec (PL_warnhook); |
|
|
933 | |
|
|
934 | SvREFCNT_dec (CORO_THROW); |
|
|
935 | SvREFCNT_dec (coro->saved_deffh); |
|
|
936 | SvREFCNT_dec (coro->rouse_cb); |
616 | |
937 | |
617 | if (ctx->stack) |
938 | coro_destruct_stacks (aTHX); |
618 | { |
939 | } |
619 | ctx->cursp = 0; |
|
|
620 | |
940 | |
621 | PUSHMARK(SP); |
941 | INLINE void |
622 | PUTBACK; |
942 | free_coro_mortal (pTHX) |
623 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
943 | { |
624 | |
944 | if (expect_true (coro_mortal)) |
625 | if (SvTRUE (ERRSV)) |
|
|
626 | croak (NULL); |
|
|
627 | else |
|
|
628 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
629 | } |
945 | { |
630 | else |
946 | SvREFCNT_dec (coro_mortal); |
|
|
947 | coro_mortal = 0; |
631 | { |
948 | } |
632 | UNOP myop; |
949 | } |
633 | |
950 | |
634 | Zero(&myop, 1, UNOP); |
951 | static int |
635 | myop.op_next = Nullop; |
952 | runops_trace (pTHX) |
636 | myop.op_flags = OPf_WANT_VOID; |
953 | { |
|
|
954 | COP *oldcop = 0; |
|
|
955 | int oldcxix = -2; |
|
|
956 | struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */ |
|
|
957 | coro_cctx *cctx = coro->cctx; |
637 | |
958 | |
638 | PL_op = (OP *)&myop; |
959 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
639 | |
|
|
640 | PUSHMARK(SP); |
|
|
641 | XPUSHs (sub_init); |
|
|
642 | /* |
|
|
643 | * the next line is slightly wrong, as PL_op->op_next |
|
|
644 | * is actually being executed so we skip the first op. |
|
|
645 | * that doesn't matter, though, since it is only |
|
|
646 | * pp_nextstate and we never return... |
|
|
647 | * ah yes, and I don't care anyways ;) |
|
|
648 | */ |
|
|
649 | PUTBACK; |
|
|
650 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
651 | SPAGAIN; |
|
|
652 | |
|
|
653 | ENTER; /* necessary e.g. for dounwind */ |
|
|
654 | } |
960 | { |
655 | } |
961 | PERL_ASYNC_CHECK (); |
656 | |
962 | |
657 | static void |
963 | if (cctx->flags & CC_TRACE_ALL) |
658 | continue_coro (void *arg) |
|
|
659 | { |
|
|
660 | /* |
|
|
661 | * this is a _very_ stripped down perl interpreter ;) |
|
|
662 | */ |
|
|
663 | dTHX; |
|
|
664 | Coro__State ctx = (Coro__State)arg; |
|
|
665 | |
|
|
666 | PL_top_env = &ctx->start_env; |
|
|
667 | |
|
|
668 | ctx->cursp = 0; |
|
|
669 | PL_op = PL_op->op_next; |
|
|
670 | CALLRUNOPS(aTHX); |
|
|
671 | |
|
|
672 | abort (); |
|
|
673 | } |
|
|
674 | |
|
|
675 | static void |
|
|
676 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
677 | { |
|
|
678 | dSTACKLEVEL; |
|
|
679 | |
|
|
680 | if (prev != next) |
|
|
681 | { |
|
|
682 | if (next->mainstack) |
|
|
683 | { |
964 | { |
684 | LOCK; |
965 | if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
685 | SAVE (prev, flags); |
|
|
686 | LOAD (next); |
|
|
687 | UNLOCK; |
|
|
688 | |
|
|
689 | /* mark this state as in-use */ |
|
|
690 | next->mainstack = 0; |
|
|
691 | next->tmps_ix = -2; |
|
|
692 | |
|
|
693 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
694 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
695 | { |
966 | { |
696 | if (!prev->stack) |
967 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
697 | allocate_stack (prev, 0); |
968 | SV **bot, **top; |
698 | else if (prev->cursp != stacklevel |
969 | AV *av = newAV (); /* return values */ |
699 | && prev->stack->usecnt > 1) |
970 | SV **cb; |
|
|
971 | dSP; |
|
|
972 | |
|
|
973 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
974 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
975 | if (isGV (gv)) |
|
|
976 | gv_efullname3 (fullname, gv, 0); |
|
|
977 | |
|
|
978 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
979 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
980 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
981 | : bot; |
|
|
982 | |
|
|
983 | av_extend (av, top - bot); |
|
|
984 | while (bot < top) |
|
|
985 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
986 | |
|
|
987 | PL_runops = RUNOPS_DEFAULT; |
|
|
988 | ENTER; |
|
|
989 | SAVETMPS; |
|
|
990 | EXTEND (SP, 3); |
|
|
991 | PUSHMARK (SP); |
|
|
992 | PUSHs (&PL_sv_no); |
|
|
993 | PUSHs (fullname); |
|
|
994 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
995 | PUTBACK; |
|
|
996 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
997 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
998 | SPAGAIN; |
|
|
999 | FREETMPS; |
|
|
1000 | LEAVE; |
|
|
1001 | PL_runops = runops_trace; |
|
|
1002 | } |
|
|
1003 | |
|
|
1004 | if (oldcop != PL_curcop) |
|
|
1005 | { |
|
|
1006 | oldcop = PL_curcop; |
|
|
1007 | |
|
|
1008 | if (PL_curcop != &PL_compiling) |
700 | { |
1009 | { |
701 | prev->gencnt = ++prev->stack->gencnt; |
1010 | SV **cb; |
702 | prev->stack->usecnt = 1; |
|
|
703 | } |
|
|
704 | |
1011 | |
705 | /* has our stack been invalidated? */ |
1012 | if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
706 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
707 | { |
1013 | { |
708 | deallocate_stack (next); |
1014 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
709 | allocate_stack (next, 1); |
1015 | |
710 | coro_create (&(next->stack->cctx), |
1016 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
711 | continue_coro, (void *)next, |
1017 | { |
712 | next->stack->sptr, labs (next->stack->ssize)); |
1018 | runops_proc_t old_runops = PL_runops; |
|
|
1019 | dSP; |
|
|
1020 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1021 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1022 | |
|
|
1023 | if (isGV (gv)) |
|
|
1024 | gv_efullname3 (fullname, gv, 0); |
|
|
1025 | |
|
|
1026 | PL_runops = RUNOPS_DEFAULT; |
|
|
1027 | ENTER; |
|
|
1028 | SAVETMPS; |
|
|
1029 | EXTEND (SP, 3); |
|
|
1030 | PUSHMARK (SP); |
|
|
1031 | PUSHs (&PL_sv_yes); |
|
|
1032 | PUSHs (fullname); |
|
|
1033 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1034 | PUTBACK; |
|
|
1035 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1036 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1037 | SPAGAIN; |
|
|
1038 | FREETMPS; |
|
|
1039 | LEAVE; |
|
|
1040 | PL_runops = runops_trace; |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | oldcxix = cxstack_ix; |
713 | } |
1044 | } |
714 | |
1045 | |
715 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
1046 | if (cctx->flags & CC_TRACE_LINE) |
716 | prev->cursp = stacklevel; |
|
|
717 | /* don't add any code here */ |
|
|
718 | } |
|
|
719 | else |
|
|
720 | next->cursp = stacklevel; |
|
|
721 | } |
|
|
722 | else if (next->tmps_ix == -2) |
|
|
723 | croak ("tried to transfer to running coroutine"); |
|
|
724 | else |
|
|
725 | { |
|
|
726 | LOCK; |
|
|
727 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
728 | UNLOCK; |
|
|
729 | |
|
|
730 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
731 | { |
|
|
732 | if (!prev->stack) |
|
|
733 | allocate_stack (prev, 0); |
|
|
734 | |
|
|
735 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
736 | { |
1047 | { |
737 | PL_top_env = &next->start_env; |
1048 | dSP; |
738 | |
1049 | |
739 | setup_coro (next); |
1050 | PL_runops = RUNOPS_DEFAULT; |
740 | next->cursp = stacklevel; |
1051 | ENTER; |
741 | |
1052 | SAVETMPS; |
742 | prev->stack->refcnt++; |
1053 | EXTEND (SP, 3); |
743 | prev->stack->usecnt++; |
1054 | PL_runops = RUNOPS_DEFAULT; |
744 | next->stack = prev->stack; |
1055 | PUSHMARK (SP); |
745 | next->gencnt = prev->gencnt; |
1056 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1057 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1058 | PUTBACK; |
|
|
1059 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1060 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1061 | SPAGAIN; |
|
|
1062 | FREETMPS; |
|
|
1063 | LEAVE; |
|
|
1064 | PL_runops = runops_trace; |
746 | } |
1065 | } |
747 | else |
|
|
748 | { |
|
|
749 | assert (!next->stack); |
|
|
750 | allocate_stack (next, 1); |
|
|
751 | coro_create (&(next->stack->cctx), |
|
|
752 | setup_coro, (void *)next, |
|
|
753 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
754 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
755 | prev->cursp = stacklevel; |
|
|
756 | /* don't add any code here */ |
|
|
757 | } |
1066 | } |
758 | } |
1067 | } |
759 | else |
|
|
760 | { |
|
|
761 | setup_coro (next); |
|
|
762 | next->cursp = stacklevel; |
|
|
763 | } |
|
|
764 | } |
1068 | } |
765 | } |
1069 | } |
766 | |
1070 | |
767 | LOCK; |
1071 | TAINT_NOT; |
768 | if (coro_mortal) |
1072 | return 0; |
|
|
1073 | } |
|
|
1074 | |
|
|
1075 | static struct coro_cctx *cctx_ssl_cctx; |
|
|
1076 | static struct CoroSLF cctx_ssl_frame; |
|
|
1077 | |
|
|
1078 | static void |
|
|
1079 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1080 | { |
|
|
1081 | ta->prev = (struct coro *)cctx_ssl_cctx; |
|
|
1082 | ta->next = 0; |
|
|
1083 | } |
|
|
1084 | |
|
|
1085 | static int |
|
|
1086 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
|
|
1087 | { |
|
|
1088 | *frame = cctx_ssl_frame; |
|
|
1089 | |
|
|
1090 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1091 | } |
|
|
1092 | |
|
|
1093 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
|
|
1094 | static void NOINLINE |
|
|
1095 | cctx_prepare (pTHX_ coro_cctx *cctx) |
|
|
1096 | { |
|
|
1097 | PL_top_env = &PL_start_env; |
|
|
1098 | |
|
|
1099 | if (cctx->flags & CC_TRACE) |
|
|
1100 | PL_runops = runops_trace; |
|
|
1101 | |
|
|
1102 | /* we already must be executing an SLF op, there is no other valid way |
|
|
1103 | * that can lead to creation of a new cctx */ |
|
|
1104 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1105 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
|
|
1106 | |
|
|
1107 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
|
|
1108 | cctx_ssl_cctx = cctx; |
|
|
1109 | cctx_ssl_frame = slf_frame; |
|
|
1110 | |
|
|
1111 | slf_frame.prepare = slf_prepare_set_stacklevel; |
|
|
1112 | slf_frame.check = slf_check_set_stacklevel; |
|
|
1113 | } |
|
|
1114 | |
|
|
1115 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1116 | INLINE void |
|
|
1117 | transfer_tail (pTHX) |
|
|
1118 | { |
|
|
1119 | free_coro_mortal (aTHX); |
|
|
1120 | } |
|
|
1121 | |
|
|
1122 | /* |
|
|
1123 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1124 | */ |
|
|
1125 | static void |
|
|
1126 | cctx_run (void *arg) |
|
|
1127 | { |
|
|
1128 | #ifdef USE_ITHREADS |
|
|
1129 | # if CORO_PTHREAD |
|
|
1130 | PERL_SET_CONTEXT (coro_thx); |
|
|
1131 | # endif |
|
|
1132 | #endif |
769 | { |
1133 | { |
770 | SvREFCNT_dec (coro_mortal); |
1134 | dTHX; |
771 | coro_mortal = 0; |
1135 | |
|
|
1136 | /* normally we would need to skip the entersub here */ |
|
|
1137 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1138 | /* PL_nop = PL_nop->op_next */ |
|
|
1139 | |
|
|
1140 | /* inject a fake subroutine call to cctx_init */ |
|
|
1141 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
|
|
1142 | |
|
|
1143 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1144 | transfer_tail (aTHX); |
|
|
1145 | |
|
|
1146 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1147 | PL_restartop = PL_op; |
|
|
1148 | perl_run (PL_curinterp); |
|
|
1149 | |
|
|
1150 | /* |
|
|
1151 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1152 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1153 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1154 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1155 | * coroutine as Coro has no such concept |
|
|
1156 | */ |
|
|
1157 | PL_top_env = main_top_env; |
|
|
1158 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1159 | } |
|
|
1160 | } |
|
|
1161 | |
|
|
1162 | static coro_cctx * |
|
|
1163 | cctx_new () |
|
|
1164 | { |
|
|
1165 | coro_cctx *cctx; |
|
|
1166 | |
|
|
1167 | ++cctx_count; |
|
|
1168 | New (0, cctx, 1, coro_cctx); |
|
|
1169 | |
|
|
1170 | cctx->gen = cctx_gen; |
|
|
1171 | cctx->flags = 0; |
|
|
1172 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1173 | |
|
|
1174 | return cctx; |
|
|
1175 | } |
|
|
1176 | |
|
|
1177 | /* create a new cctx only suitable as source */ |
|
|
1178 | static coro_cctx * |
|
|
1179 | cctx_new_empty () |
|
|
1180 | { |
|
|
1181 | coro_cctx *cctx = cctx_new (); |
|
|
1182 | |
|
|
1183 | cctx->sptr = 0; |
|
|
1184 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1185 | |
|
|
1186 | return cctx; |
|
|
1187 | } |
|
|
1188 | |
|
|
1189 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1190 | static coro_cctx * |
|
|
1191 | cctx_new_run () |
|
|
1192 | { |
|
|
1193 | coro_cctx *cctx = cctx_new (); |
|
|
1194 | void *stack_start; |
|
|
1195 | size_t stack_size; |
|
|
1196 | |
|
|
1197 | #if HAVE_MMAP |
|
|
1198 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1199 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1200 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1201 | |
|
|
1202 | if (cctx->sptr != (void *)-1) |
772 | } |
1203 | { |
773 | UNLOCK; |
1204 | #if CORO_STACKGUARD |
774 | } |
1205 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1206 | #endif |
|
|
1207 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1208 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1209 | cctx->flags |= CC_MAPPED; |
|
|
1210 | } |
|
|
1211 | else |
|
|
1212 | #endif |
|
|
1213 | { |
|
|
1214 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1215 | New (0, cctx->sptr, cctx_stacksize, long); |
775 | |
1216 | |
776 | #define SV_CORO(sv,func) \ |
1217 | if (!cctx->sptr) |
777 | do { \ |
1218 | { |
778 | if (SvROK (sv)) \ |
1219 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
779 | sv = SvRV (sv); \ |
1220 | _exit (EXIT_FAILURE); |
780 | \ |
1221 | } |
781 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
782 | { \ |
|
|
783 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
784 | \ |
|
|
785 | if (!he) \ |
|
|
786 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
787 | \ |
|
|
788 | (sv) = SvRV (HeVAL(he)); \ |
|
|
789 | } \ |
|
|
790 | \ |
|
|
791 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
792 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
793 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
794 | \ |
|
|
795 | } while(0) |
|
|
796 | |
1222 | |
797 | #define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv)) |
1223 | stack_start = cctx->sptr; |
|
|
1224 | stack_size = cctx->ssize; |
|
|
1225 | } |
798 | |
1226 | |
|
|
1227 | #if CORO_USE_VALGRIND |
|
|
1228 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1229 | #endif |
|
|
1230 | |
|
|
1231 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1232 | |
|
|
1233 | return cctx; |
|
|
1234 | } |
|
|
1235 | |
|
|
1236 | static void |
|
|
1237 | cctx_destroy (coro_cctx *cctx) |
|
|
1238 | { |
|
|
1239 | if (!cctx) |
|
|
1240 | return; |
|
|
1241 | |
|
|
1242 | --cctx_count; |
|
|
1243 | coro_destroy (&cctx->cctx); |
|
|
1244 | |
|
|
1245 | /* coro_transfer creates new, empty cctx's */ |
|
|
1246 | if (cctx->sptr) |
|
|
1247 | { |
|
|
1248 | #if CORO_USE_VALGRIND |
|
|
1249 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1250 | #endif |
|
|
1251 | |
|
|
1252 | #if HAVE_MMAP |
|
|
1253 | if (cctx->flags & CC_MAPPED) |
|
|
1254 | munmap (cctx->sptr, cctx->ssize); |
|
|
1255 | else |
|
|
1256 | #endif |
|
|
1257 | Safefree (cctx->sptr); |
|
|
1258 | } |
|
|
1259 | |
|
|
1260 | Safefree (cctx); |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | /* wether this cctx should be destructed */ |
|
|
1264 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1265 | |
|
|
1266 | static coro_cctx * |
|
|
1267 | cctx_get (pTHX) |
|
|
1268 | { |
|
|
1269 | while (expect_true (cctx_first)) |
|
|
1270 | { |
|
|
1271 | coro_cctx *cctx = cctx_first; |
|
|
1272 | cctx_first = cctx->next; |
|
|
1273 | --cctx_idle; |
|
|
1274 | |
|
|
1275 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1276 | return cctx; |
|
|
1277 | |
|
|
1278 | cctx_destroy (cctx); |
|
|
1279 | } |
|
|
1280 | |
|
|
1281 | return cctx_new_run (); |
|
|
1282 | } |
|
|
1283 | |
|
|
1284 | static void |
|
|
1285 | cctx_put (coro_cctx *cctx) |
|
|
1286 | { |
|
|
1287 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1288 | |
|
|
1289 | /* free another cctx if overlimit */ |
|
|
1290 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1291 | { |
|
|
1292 | coro_cctx *first = cctx_first; |
|
|
1293 | cctx_first = first->next; |
|
|
1294 | --cctx_idle; |
|
|
1295 | |
|
|
1296 | cctx_destroy (first); |
|
|
1297 | } |
|
|
1298 | |
|
|
1299 | ++cctx_idle; |
|
|
1300 | cctx->next = cctx_first; |
|
|
1301 | cctx_first = cctx; |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | /** coroutine switching *****************************************************/ |
|
|
1305 | |
|
|
1306 | static void |
|
|
1307 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1308 | { |
|
|
1309 | /* TODO: throwing up here is considered harmful */ |
|
|
1310 | |
|
|
1311 | if (expect_true (prev != next)) |
|
|
1312 | { |
|
|
1313 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1314 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
|
|
1315 | |
|
|
1316 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1317 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
|
|
1318 | |
|
|
1319 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1320 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
|
|
1321 | |
|
|
1322 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1323 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1324 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1325 | #endif |
|
|
1326 | } |
|
|
1327 | } |
|
|
1328 | |
|
|
1329 | /* always use the TRANSFER macro */ |
|
|
1330 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
|
|
1331 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1332 | { |
|
|
1333 | dSTACKLEVEL; |
|
|
1334 | |
|
|
1335 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1336 | if (expect_false (!next)) |
|
|
1337 | { |
|
|
1338 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
1339 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1340 | } |
|
|
1341 | else if (expect_true (prev != next)) |
|
|
1342 | { |
|
|
1343 | coro_cctx *prev__cctx; |
|
|
1344 | |
|
|
1345 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1346 | { |
|
|
1347 | /* create a new empty/source context */ |
|
|
1348 | prev->cctx = cctx_new_empty (); |
|
|
1349 | prev->flags &= ~CF_NEW; |
|
|
1350 | prev->flags |= CF_RUNNING; |
|
|
1351 | } |
|
|
1352 | |
|
|
1353 | prev->flags &= ~CF_RUNNING; |
|
|
1354 | next->flags |= CF_RUNNING; |
|
|
1355 | |
|
|
1356 | /* first get rid of the old state */ |
|
|
1357 | save_perl (aTHX_ prev); |
|
|
1358 | |
|
|
1359 | if (expect_false (next->flags & CF_NEW)) |
|
|
1360 | { |
|
|
1361 | /* need to start coroutine */ |
|
|
1362 | next->flags &= ~CF_NEW; |
|
|
1363 | /* setup coroutine call */ |
|
|
1364 | coro_setup (aTHX_ next); |
|
|
1365 | } |
|
|
1366 | else |
|
|
1367 | load_perl (aTHX_ next); |
|
|
1368 | |
|
|
1369 | prev__cctx = prev->cctx; |
|
|
1370 | |
|
|
1371 | /* possibly untie and reuse the cctx */ |
|
|
1372 | if (expect_true ( |
|
|
1373 | prev__cctx->idle_sp == STACKLEVEL |
|
|
1374 | && !(prev__cctx->flags & CC_TRACE) |
|
|
1375 | && !force_cctx |
|
|
1376 | )) |
|
|
1377 | { |
|
|
1378 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1379 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
|
|
1380 | |
|
|
1381 | prev->cctx = 0; |
|
|
1382 | |
|
|
1383 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
|
|
1384 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
|
|
1385 | if (expect_false (CCTX_EXPIRED (prev__cctx))) |
|
|
1386 | if (!next->cctx) |
|
|
1387 | next->cctx = cctx_get (aTHX); |
|
|
1388 | |
|
|
1389 | cctx_put (prev__cctx); |
|
|
1390 | } |
|
|
1391 | |
|
|
1392 | ++next->usecount; |
|
|
1393 | |
|
|
1394 | if (expect_true (!next->cctx)) |
|
|
1395 | next->cctx = cctx_get (aTHX); |
|
|
1396 | |
|
|
1397 | if (expect_false (prev__cctx != next->cctx)) |
|
|
1398 | { |
|
|
1399 | prev__cctx->top_env = PL_top_env; |
|
|
1400 | PL_top_env = next->cctx->top_env; |
|
|
1401 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
1402 | } |
|
|
1403 | |
|
|
1404 | transfer_tail (aTHX); |
|
|
1405 | } |
|
|
1406 | } |
|
|
1407 | |
|
|
1408 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1409 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1410 | |
|
|
1411 | /** high level stuff ********************************************************/ |
|
|
1412 | |
799 | static void |
1413 | static int |
|
|
1414 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1415 | { |
|
|
1416 | if (coro->flags & CF_DESTROYED) |
|
|
1417 | return 0; |
|
|
1418 | |
|
|
1419 | if (coro->on_destroy) |
|
|
1420 | coro->on_destroy (aTHX_ coro); |
|
|
1421 | |
|
|
1422 | coro->flags |= CF_DESTROYED; |
|
|
1423 | |
|
|
1424 | if (coro->flags & CF_READY) |
|
|
1425 | { |
|
|
1426 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1427 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1428 | --coro_nready; |
|
|
1429 | } |
|
|
1430 | else |
|
|
1431 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1432 | |
|
|
1433 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
1434 | { |
|
|
1435 | struct coro temp; |
|
|
1436 | |
|
|
1437 | assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
|
|
1438 | |
|
|
1439 | save_perl (aTHX_ &temp); |
|
|
1440 | load_perl (aTHX_ coro); |
|
|
1441 | |
|
|
1442 | coro_destruct (aTHX_ coro); |
|
|
1443 | |
|
|
1444 | load_perl (aTHX_ &temp); |
|
|
1445 | |
|
|
1446 | coro->slot = 0; |
|
|
1447 | } |
|
|
1448 | |
|
|
1449 | cctx_destroy (coro->cctx); |
|
|
1450 | SvREFCNT_dec (coro->startcv); |
|
|
1451 | SvREFCNT_dec (coro->args); |
|
|
1452 | |
|
|
1453 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1454 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1455 | if (coro == coro_first) coro_first = coro->next; |
|
|
1456 | |
|
|
1457 | return 1; |
|
|
1458 | } |
|
|
1459 | |
|
|
1460 | static int |
|
|
1461 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1462 | { |
|
|
1463 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1464 | mg->mg_ptr = 0; |
|
|
1465 | |
|
|
1466 | coro->hv = 0; |
|
|
1467 | |
|
|
1468 | if (--coro->refcnt < 0) |
|
|
1469 | { |
|
|
1470 | coro_state_destroy (aTHX_ coro); |
|
|
1471 | Safefree (coro); |
|
|
1472 | } |
|
|
1473 | |
|
|
1474 | return 0; |
|
|
1475 | } |
|
|
1476 | |
|
|
1477 | static int |
|
|
1478 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1479 | { |
|
|
1480 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1481 | |
|
|
1482 | ++coro->refcnt; |
|
|
1483 | |
|
|
1484 | return 0; |
|
|
1485 | } |
|
|
1486 | |
|
|
1487 | static MGVTBL coro_state_vtbl = { |
|
|
1488 | 0, 0, 0, 0, |
|
|
1489 | coro_state_free, |
|
|
1490 | 0, |
|
|
1491 | #ifdef MGf_DUP |
|
|
1492 | coro_state_dup, |
|
|
1493 | #else |
|
|
1494 | # define MGf_DUP 0 |
|
|
1495 | #endif |
|
|
1496 | }; |
|
|
1497 | |
|
|
1498 | static void |
|
|
1499 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1500 | { |
|
|
1501 | ta->prev = SvSTATE (prev_sv); |
|
|
1502 | ta->next = SvSTATE (next_sv); |
|
|
1503 | TRANSFER_CHECK (*ta); |
|
|
1504 | } |
|
|
1505 | |
|
|
1506 | static void |
800 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
1507 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
801 | { |
1508 | { |
802 | SV_CORO (prev, "Coro::transfer"); |
1509 | struct coro_transfer_args ta; |
803 | SV_CORO (next, "Coro::transfer"); |
|
|
804 | |
1510 | |
805 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1511 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1512 | TRANSFER (ta, 1); |
|
|
1513 | } |
|
|
1514 | |
|
|
1515 | /*****************************************************************************/ |
|
|
1516 | /* gensub: simple closure generation utility */ |
|
|
1517 | |
|
|
1518 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
1519 | |
|
|
1520 | /* create a closure from XS, returns a code reference */ |
|
|
1521 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
1522 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
1523 | static SV * |
|
|
1524 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
1525 | { |
|
|
1526 | CV *cv = (CV *)newSV (0); |
|
|
1527 | |
|
|
1528 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
1529 | |
|
|
1530 | CvANON_on (cv); |
|
|
1531 | CvISXSUB_on (cv); |
|
|
1532 | CvXSUB (cv) = xsub; |
|
|
1533 | GENSUB_ARG = arg; |
|
|
1534 | |
|
|
1535 | return newRV_noinc ((SV *)cv); |
806 | } |
1536 | } |
807 | |
1537 | |
808 | /** Coro ********************************************************************/ |
1538 | /** Coro ********************************************************************/ |
809 | |
1539 | |
810 | #define PRIO_MAX 3 |
1540 | INLINE void |
811 | #define PRIO_HIGH 1 |
1541 | coro_enq (pTHX_ struct coro *coro) |
812 | #define PRIO_NORMAL 0 |
|
|
813 | #define PRIO_LOW -1 |
|
|
814 | #define PRIO_IDLE -3 |
|
|
815 | #define PRIO_MIN -4 |
|
|
816 | |
|
|
817 | /* for Coro.pm */ |
|
|
818 | static GV *coro_current, *coro_idle; |
|
|
819 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
|
|
820 | static int coro_nready; |
|
|
821 | |
|
|
822 | static void |
|
|
823 | coro_enq (pTHX_ SV *sv) |
|
|
824 | { |
1542 | { |
825 | SV **xprio; |
1543 | av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
|
|
1544 | } |
|
|
1545 | |
|
|
1546 | INLINE SV * |
|
|
1547 | coro_deq (pTHX) |
|
|
1548 | { |
826 | int prio; |
1549 | int prio; |
827 | |
1550 | |
828 | if (SvTYPE (sv) != SVt_PVHV) |
1551 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
829 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
1552 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1553 | return av_shift (coro_ready [prio]); |
830 | |
1554 | |
831 | xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
1555 | return 0; |
832 | prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
1556 | } |
833 | |
1557 | |
834 | prio = prio > PRIO_MAX ? PRIO_MAX |
1558 | static int |
835 | : prio < PRIO_MIN ? PRIO_MIN |
1559 | api_ready (pTHX_ SV *coro_sv) |
836 | : prio; |
1560 | { |
|
|
1561 | struct coro *coro; |
|
|
1562 | SV *sv_hook; |
|
|
1563 | void (*xs_hook)(void); |
837 | |
1564 | |
838 | av_push (coro_ready [prio - PRIO_MIN], sv); |
1565 | if (SvROK (coro_sv)) |
|
|
1566 | coro_sv = SvRV (coro_sv); |
|
|
1567 | |
|
|
1568 | coro = SvSTATE (coro_sv); |
|
|
1569 | |
|
|
1570 | if (coro->flags & CF_READY) |
|
|
1571 | return 0; |
|
|
1572 | |
|
|
1573 | coro->flags |= CF_READY; |
|
|
1574 | |
|
|
1575 | sv_hook = coro_nready ? 0 : coro_readyhook; |
|
|
1576 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
|
|
1577 | |
|
|
1578 | coro_enq (aTHX_ coro); |
839 | coro_nready++; |
1579 | ++coro_nready; |
|
|
1580 | |
|
|
1581 | if (sv_hook) |
|
|
1582 | { |
|
|
1583 | dSP; |
|
|
1584 | |
|
|
1585 | ENTER; |
|
|
1586 | SAVETMPS; |
|
|
1587 | |
|
|
1588 | PUSHMARK (SP); |
|
|
1589 | PUTBACK; |
|
|
1590 | call_sv (sv_hook, G_VOID | G_DISCARD); |
|
|
1591 | |
|
|
1592 | FREETMPS; |
|
|
1593 | LEAVE; |
|
|
1594 | } |
|
|
1595 | |
|
|
1596 | if (xs_hook) |
|
|
1597 | xs_hook (); |
|
|
1598 | |
|
|
1599 | return 1; |
|
|
1600 | } |
|
|
1601 | |
|
|
1602 | static int |
|
|
1603 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1604 | { |
|
|
1605 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1606 | } |
|
|
1607 | |
|
|
1608 | INLINE void |
|
|
1609 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1610 | { |
|
|
1611 | SV *prev_sv, *next_sv; |
|
|
1612 | |
|
|
1613 | for (;;) |
|
|
1614 | { |
|
|
1615 | next_sv = coro_deq (aTHX); |
|
|
1616 | |
|
|
1617 | /* nothing to schedule: call the idle handler */ |
|
|
1618 | if (expect_false (!next_sv)) |
|
|
1619 | { |
|
|
1620 | dSP; |
|
|
1621 | |
|
|
1622 | ENTER; |
|
|
1623 | SAVETMPS; |
|
|
1624 | |
|
|
1625 | PUSHMARK (SP); |
|
|
1626 | PUTBACK; |
|
|
1627 | call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); |
|
|
1628 | |
|
|
1629 | FREETMPS; |
|
|
1630 | LEAVE; |
|
|
1631 | continue; |
|
|
1632 | } |
|
|
1633 | |
|
|
1634 | ta->next = SvSTATE_hv (next_sv); |
|
|
1635 | |
|
|
1636 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1637 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
|
|
1638 | { |
|
|
1639 | SvREFCNT_dec (next_sv); |
|
|
1640 | /* coro_nready has already been taken care of by destroy */ |
|
|
1641 | continue; |
|
|
1642 | } |
|
|
1643 | |
|
|
1644 | --coro_nready; |
|
|
1645 | break; |
|
|
1646 | } |
|
|
1647 | |
|
|
1648 | /* free this only after the transfer */ |
|
|
1649 | prev_sv = SvRV (coro_current); |
|
|
1650 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1651 | TRANSFER_CHECK (*ta); |
|
|
1652 | assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
|
|
1653 | ta->next->flags &= ~CF_READY; |
|
|
1654 | SvRV_set (coro_current, next_sv); |
|
|
1655 | |
|
|
1656 | free_coro_mortal (aTHX); |
|
|
1657 | coro_mortal = prev_sv; |
|
|
1658 | } |
|
|
1659 | |
|
|
1660 | INLINE void |
|
|
1661 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1662 | { |
|
|
1663 | api_ready (aTHX_ coro_current); |
|
|
1664 | prepare_schedule (aTHX_ ta); |
|
|
1665 | } |
|
|
1666 | |
|
|
1667 | INLINE void |
|
|
1668 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1669 | { |
|
|
1670 | SV *prev = SvRV (coro_current); |
|
|
1671 | |
|
|
1672 | if (coro_nready) |
|
|
1673 | { |
|
|
1674 | prepare_schedule (aTHX_ ta); |
|
|
1675 | api_ready (aTHX_ prev); |
|
|
1676 | } |
|
|
1677 | else |
|
|
1678 | prepare_nop (aTHX_ ta); |
|
|
1679 | } |
|
|
1680 | |
|
|
1681 | static void |
|
|
1682 | api_schedule (pTHX) |
|
|
1683 | { |
|
|
1684 | struct coro_transfer_args ta; |
|
|
1685 | |
|
|
1686 | prepare_schedule (aTHX_ &ta); |
|
|
1687 | TRANSFER (ta, 1); |
|
|
1688 | } |
|
|
1689 | |
|
|
1690 | static int |
|
|
1691 | api_cede (pTHX) |
|
|
1692 | { |
|
|
1693 | struct coro_transfer_args ta; |
|
|
1694 | |
|
|
1695 | prepare_cede (aTHX_ &ta); |
|
|
1696 | |
|
|
1697 | if (expect_true (ta.prev != ta.next)) |
|
|
1698 | { |
|
|
1699 | TRANSFER (ta, 1); |
|
|
1700 | return 1; |
|
|
1701 | } |
|
|
1702 | else |
|
|
1703 | return 0; |
|
|
1704 | } |
|
|
1705 | |
|
|
1706 | static int |
|
|
1707 | api_cede_notself (pTHX) |
|
|
1708 | { |
|
|
1709 | if (coro_nready) |
|
|
1710 | { |
|
|
1711 | struct coro_transfer_args ta; |
|
|
1712 | |
|
|
1713 | prepare_cede_notself (aTHX_ &ta); |
|
|
1714 | TRANSFER (ta, 1); |
|
|
1715 | return 1; |
|
|
1716 | } |
|
|
1717 | else |
|
|
1718 | return 0; |
|
|
1719 | } |
|
|
1720 | |
|
|
1721 | static void |
|
|
1722 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1723 | { |
|
|
1724 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1725 | |
|
|
1726 | if (flags & CC_TRACE) |
|
|
1727 | { |
|
|
1728 | if (!coro->cctx) |
|
|
1729 | coro->cctx = cctx_new_run (); |
|
|
1730 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1731 | croak ("cannot enable tracing on coroutine with custom stack,"); |
|
|
1732 | |
|
|
1733 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1734 | } |
|
|
1735 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1736 | { |
|
|
1737 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1738 | |
|
|
1739 | if (coro->flags & CF_RUNNING) |
|
|
1740 | PL_runops = RUNOPS_DEFAULT; |
|
|
1741 | else |
|
|
1742 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1743 | } |
|
|
1744 | } |
|
|
1745 | |
|
|
1746 | /*****************************************************************************/ |
|
|
1747 | /* rouse callback */ |
|
|
1748 | |
|
|
1749 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
1750 | |
|
|
1751 | static void |
|
|
1752 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
1753 | { |
|
|
1754 | dXSARGS; |
|
|
1755 | SV *data = (SV *)GENSUB_ARG; |
|
|
1756 | |
|
|
1757 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1758 | { |
|
|
1759 | /* first call, set args */ |
|
|
1760 | int i; |
|
|
1761 | AV *av = newAV (); |
|
|
1762 | SV *coro = SvRV (data); |
|
|
1763 | |
|
|
1764 | SvRV_set (data, (SV *)av); |
|
|
1765 | api_ready (aTHX_ coro); |
|
|
1766 | SvREFCNT_dec (coro); |
|
|
1767 | |
|
|
1768 | /* better take a full copy of the arguments */ |
|
|
1769 | while (items--) |
|
|
1770 | av_store (av, items, newSVsv (ST (items))); |
|
|
1771 | } |
|
|
1772 | |
|
|
1773 | XSRETURN_EMPTY; |
|
|
1774 | } |
|
|
1775 | |
|
|
1776 | static int |
|
|
1777 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
1778 | { |
|
|
1779 | SV *data = (SV *)frame->data; |
|
|
1780 | |
|
|
1781 | if (CORO_THROW) |
|
|
1782 | return 0; |
|
|
1783 | |
|
|
1784 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1785 | return 1; |
|
|
1786 | |
|
|
1787 | /* now push all results on the stack */ |
|
|
1788 | { |
|
|
1789 | dSP; |
|
|
1790 | AV *av = (AV *)SvRV (data); |
|
|
1791 | int i; |
|
|
1792 | |
|
|
1793 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
1794 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
1795 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
1796 | |
|
|
1797 | /* we have stolen the elements, so ste length to zero and free */ |
|
|
1798 | AvFILLp (av) = -1; |
|
|
1799 | av_undef (av); |
|
|
1800 | |
|
|
1801 | PUTBACK; |
|
|
1802 | } |
|
|
1803 | |
|
|
1804 | return 0; |
|
|
1805 | } |
|
|
1806 | |
|
|
1807 | static void |
|
|
1808 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1809 | { |
|
|
1810 | SV *cb; |
|
|
1811 | |
|
|
1812 | if (items) |
|
|
1813 | cb = arg [0]; |
|
|
1814 | else |
|
|
1815 | { |
|
|
1816 | struct coro *coro = SvSTATE_current; |
|
|
1817 | |
|
|
1818 | if (!coro->rouse_cb) |
|
|
1819 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
1820 | |
|
|
1821 | cb = sv_2mortal (coro->rouse_cb); |
|
|
1822 | coro->rouse_cb = 0; |
|
|
1823 | } |
|
|
1824 | |
|
|
1825 | if (!SvROK (cb) |
|
|
1826 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
1827 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
1828 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
1829 | |
|
|
1830 | { |
|
|
1831 | CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ |
|
|
1832 | SV *data = (SV *)GENSUB_ARG; |
|
|
1833 | |
|
|
1834 | frame->data = (void *)data; |
|
|
1835 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
1836 | frame->check = slf_check_rouse_wait; |
|
|
1837 | } |
840 | } |
1838 | } |
841 | |
1839 | |
842 | static SV * |
1840 | static SV * |
843 | coro_deq (pTHX_ int min_prio) |
1841 | coro_new_rouse_cb (pTHX) |
844 | { |
1842 | { |
845 | int prio = PRIO_MAX - PRIO_MIN; |
1843 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1844 | struct coro *coro = SvSTATE_hv (hv); |
|
|
1845 | SV *data = newRV_inc ((SV *)hv); |
|
|
1846 | SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); |
846 | |
1847 | |
847 | min_prio -= PRIO_MIN; |
1848 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
848 | if (min_prio < 0) |
1849 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
849 | min_prio = 0; |
|
|
850 | |
1850 | |
851 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1851 | SvREFCNT_dec (coro->rouse_cb); |
852 | if (av_len (coro_ready[prio]) >= 0) |
1852 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
1853 | |
|
|
1854 | return cb; |
|
|
1855 | } |
|
|
1856 | |
|
|
1857 | /*****************************************************************************/ |
|
|
1858 | /* schedule-like-function opcode (SLF) */ |
|
|
1859 | |
|
|
1860 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1861 | static const CV *slf_cv; |
|
|
1862 | static SV **slf_argv; |
|
|
1863 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
1864 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
1865 | |
|
|
1866 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1867 | /* recreate the stack frame as perl will on following calls */ |
|
|
1868 | /* since entersub cleared the stack */ |
|
|
1869 | static OP * |
|
|
1870 | pp_restore (pTHX) |
|
|
1871 | { |
|
|
1872 | int i; |
|
|
1873 | SV **SP = PL_stack_base + slf_ax; |
|
|
1874 | |
|
|
1875 | PUSHMARK (SP); |
|
|
1876 | |
|
|
1877 | EXTEND (SP, slf_argc + 1); |
|
|
1878 | |
|
|
1879 | for (i = 0; i < slf_argc; ++i) |
|
|
1880 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
1881 | |
|
|
1882 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1883 | |
|
|
1884 | RETURNOP (slf_restore.op_first); |
|
|
1885 | } |
|
|
1886 | |
|
|
1887 | static void |
|
|
1888 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1889 | { |
|
|
1890 | SV **arg = (SV **)slf_frame.data; |
|
|
1891 | |
|
|
1892 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | static void |
|
|
1896 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1897 | { |
|
|
1898 | if (items != 2) |
|
|
1899 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1900 | |
|
|
1901 | frame->prepare = slf_prepare_transfer; |
|
|
1902 | frame->check = slf_check_nop; |
|
|
1903 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1904 | } |
|
|
1905 | |
|
|
1906 | static void |
|
|
1907 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1908 | { |
|
|
1909 | frame->prepare = prepare_schedule; |
|
|
1910 | frame->check = slf_check_nop; |
|
|
1911 | } |
|
|
1912 | |
|
|
1913 | static void |
|
|
1914 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1915 | { |
|
|
1916 | frame->prepare = prepare_cede; |
|
|
1917 | frame->check = slf_check_nop; |
|
|
1918 | } |
|
|
1919 | |
|
|
1920 | static void |
|
|
1921 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1922 | { |
|
|
1923 | frame->prepare = prepare_cede_notself; |
|
|
1924 | frame->check = slf_check_nop; |
|
|
1925 | } |
|
|
1926 | |
|
|
1927 | /* |
|
|
1928 | * these not obviously related functions are all rolled into one |
|
|
1929 | * function to increase chances that they all will call transfer with the same |
|
|
1930 | * stack offset |
|
|
1931 | * SLF stands for "schedule-like-function". |
|
|
1932 | */ |
|
|
1933 | static OP * |
|
|
1934 | pp_slf (pTHX) |
|
|
1935 | { |
|
|
1936 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1937 | |
|
|
1938 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1939 | /* the latter happens when a new coro has been started */ |
|
|
1940 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1941 | if (expect_true (!slf_frame.prepare)) |
|
|
1942 | { |
|
|
1943 | /* first iteration */ |
|
|
1944 | dSP; |
|
|
1945 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1946 | int items = SP - arg; /* args without function object */ |
|
|
1947 | SV *gv = *sp; |
|
|
1948 | |
|
|
1949 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1950 | /* for us, divert to the real entersub */ |
|
|
1951 | if (SvTYPE (gv) != SVt_PVGV |
|
|
1952 | || !GvCV (gv) |
|
|
1953 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1954 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1955 | |
|
|
1956 | if (!(PL_op->op_flags & OPf_STACKED)) |
853 | { |
1957 | { |
854 | coro_nready--; |
1958 | /* ampersand-form of call, use @_ instead of stack */ |
855 | return av_shift (coro_ready[prio]); |
1959 | AV *av = GvAV (PL_defgv); |
|
|
1960 | arg = AvARRAY (av); |
|
|
1961 | items = AvFILLp (av) + 1; |
856 | } |
1962 | } |
|
|
1963 | |
|
|
1964 | /* now call the init function, which needs to set up slf_frame */ |
|
|
1965 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
1966 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
1967 | |
|
|
1968 | /* pop args */ |
|
|
1969 | SP = PL_stack_base + POPMARK; |
|
|
1970 | |
|
|
1971 | PUTBACK; |
|
|
1972 | } |
|
|
1973 | |
|
|
1974 | /* now that we have a slf_frame, interpret it! */ |
|
|
1975 | /* we use a callback system not to make the code needlessly */ |
|
|
1976 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1977 | |
|
|
1978 | do |
|
|
1979 | { |
|
|
1980 | struct coro_transfer_args ta; |
|
|
1981 | |
|
|
1982 | slf_frame.prepare (aTHX_ &ta); |
|
|
1983 | TRANSFER (ta, 0); |
|
|
1984 | |
|
|
1985 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1986 | } |
|
|
1987 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1988 | |
|
|
1989 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
1990 | |
|
|
1991 | /* exception handling */ |
|
|
1992 | if (expect_false (CORO_THROW)) |
|
|
1993 | { |
|
|
1994 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
1995 | |
|
|
1996 | CORO_THROW = 0; |
|
|
1997 | sv_setsv (ERRSV, exception); |
|
|
1998 | croak (0); |
|
|
1999 | } |
|
|
2000 | |
|
|
2001 | /* return value handling - mostly like entersub */ |
|
|
2002 | /* make sure we put something on the stack in scalar context */ |
|
|
2003 | if (GIMME_V == G_SCALAR) |
|
|
2004 | { |
|
|
2005 | dSP; |
|
|
2006 | SV **bot = PL_stack_base + checkmark; |
|
|
2007 | |
|
|
2008 | if (sp == bot) /* too few, push undef */ |
|
|
2009 | bot [1] = &PL_sv_undef; |
|
|
2010 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
2011 | bot [1] = *sp; |
|
|
2012 | |
|
|
2013 | SP = bot + 1; |
|
|
2014 | |
|
|
2015 | PUTBACK; |
|
|
2016 | } |
|
|
2017 | |
|
|
2018 | return NORMAL; |
|
|
2019 | } |
|
|
2020 | |
|
|
2021 | static void |
|
|
2022 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2023 | { |
|
|
2024 | int i; |
|
|
2025 | SV **arg = PL_stack_base + ax; |
|
|
2026 | int items = PL_stack_sp - arg + 1; |
|
|
2027 | |
|
|
2028 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2029 | |
|
|
2030 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2031 | && PL_op->op_ppaddr != pp_slf) |
|
|
2032 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2033 | |
|
|
2034 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2035 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2036 | slf_cv = cv; |
|
|
2037 | |
|
|
2038 | /* we patch the op, and then re-run the whole call */ |
|
|
2039 | /* we have to put the same argument on the stack for this to work */ |
|
|
2040 | /* and this will be done by pp_restore */ |
|
|
2041 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2042 | slf_restore.op_type = OP_CUSTOM; |
|
|
2043 | slf_restore.op_ppaddr = pp_restore; |
|
|
2044 | slf_restore.op_first = PL_op; |
|
|
2045 | |
|
|
2046 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2047 | |
|
|
2048 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2049 | { |
|
|
2050 | if (items > slf_arga) |
|
|
2051 | { |
|
|
2052 | slf_arga = items; |
|
|
2053 | free (slf_argv); |
|
|
2054 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
2055 | } |
|
|
2056 | |
|
|
2057 | slf_argc = items; |
|
|
2058 | |
|
|
2059 | for (i = 0; i < items; ++i) |
|
|
2060 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2061 | } |
|
|
2062 | else |
|
|
2063 | slf_argc = 0; |
|
|
2064 | |
|
|
2065 | PL_op->op_ppaddr = pp_slf; |
|
|
2066 | PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
|
|
2067 | |
|
|
2068 | PL_op = (OP *)&slf_restore; |
|
|
2069 | } |
|
|
2070 | |
|
|
2071 | /*****************************************************************************/ |
|
|
2072 | /* PerlIO::cede */ |
|
|
2073 | |
|
|
2074 | typedef struct |
|
|
2075 | { |
|
|
2076 | PerlIOBuf base; |
|
|
2077 | NV next, every; |
|
|
2078 | } PerlIOCede; |
|
|
2079 | |
|
|
2080 | static IV |
|
|
2081 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
2082 | { |
|
|
2083 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2084 | |
|
|
2085 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
2086 | self->next = nvtime () + self->every; |
|
|
2087 | |
|
|
2088 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
2089 | } |
|
|
2090 | |
|
|
2091 | static SV * |
|
|
2092 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
2093 | { |
|
|
2094 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2095 | |
|
|
2096 | return newSVnv (self->every); |
|
|
2097 | } |
|
|
2098 | |
|
|
2099 | static IV |
|
|
2100 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
2101 | { |
|
|
2102 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2103 | double now = nvtime (); |
|
|
2104 | |
|
|
2105 | if (now >= self->next) |
|
|
2106 | { |
|
|
2107 | api_cede (aTHX); |
|
|
2108 | self->next = now + self->every; |
|
|
2109 | } |
|
|
2110 | |
|
|
2111 | return PerlIOBuf_flush (aTHX_ f); |
|
|
2112 | } |
|
|
2113 | |
|
|
2114 | static PerlIO_funcs PerlIO_cede = |
|
|
2115 | { |
|
|
2116 | sizeof(PerlIO_funcs), |
|
|
2117 | "cede", |
|
|
2118 | sizeof(PerlIOCede), |
|
|
2119 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
2120 | PerlIOCede_pushed, |
|
|
2121 | PerlIOBuf_popped, |
|
|
2122 | PerlIOBuf_open, |
|
|
2123 | PerlIOBase_binmode, |
|
|
2124 | PerlIOCede_getarg, |
|
|
2125 | PerlIOBase_fileno, |
|
|
2126 | PerlIOBuf_dup, |
|
|
2127 | PerlIOBuf_read, |
|
|
2128 | PerlIOBuf_unread, |
|
|
2129 | PerlIOBuf_write, |
|
|
2130 | PerlIOBuf_seek, |
|
|
2131 | PerlIOBuf_tell, |
|
|
2132 | PerlIOBuf_close, |
|
|
2133 | PerlIOCede_flush, |
|
|
2134 | PerlIOBuf_fill, |
|
|
2135 | PerlIOBase_eof, |
|
|
2136 | PerlIOBase_error, |
|
|
2137 | PerlIOBase_clearerr, |
|
|
2138 | PerlIOBase_setlinebuf, |
|
|
2139 | PerlIOBuf_get_base, |
|
|
2140 | PerlIOBuf_bufsiz, |
|
|
2141 | PerlIOBuf_get_ptr, |
|
|
2142 | PerlIOBuf_get_cnt, |
|
|
2143 | PerlIOBuf_set_ptrcnt, |
|
|
2144 | }; |
|
|
2145 | |
|
|
2146 | /*****************************************************************************/ |
|
|
2147 | /* Coro::Semaphore & Coro::Signal */ |
|
|
2148 | |
|
|
2149 | static SV * |
|
|
2150 | coro_waitarray_new (pTHX_ int count) |
|
|
2151 | { |
|
|
2152 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2153 | AV *av = newAV (); |
|
|
2154 | SV **ary; |
|
|
2155 | |
|
|
2156 | /* unfortunately, building manually saves memory */ |
|
|
2157 | Newx (ary, 2, SV *); |
|
|
2158 | AvALLOC (av) = ary; |
|
|
2159 | /*AvARRAY (av) = ary;*/ |
|
|
2160 | SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ |
|
|
2161 | AvMAX (av) = 1; |
|
|
2162 | AvFILLp (av) = 0; |
|
|
2163 | ary [0] = newSViv (count); |
|
|
2164 | |
|
|
2165 | return newRV_noinc ((SV *)av); |
|
|
2166 | } |
|
|
2167 | |
|
|
2168 | /* semaphore */ |
|
|
2169 | |
|
|
2170 | static void |
|
|
2171 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2172 | { |
|
|
2173 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2174 | IV count = SvIVX (count_sv); |
|
|
2175 | |
|
|
2176 | count += adjust; |
|
|
2177 | SvIVX (count_sv) = count; |
|
|
2178 | |
|
|
2179 | /* now wake up as many waiters as are expected to lock */ |
|
|
2180 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2181 | { |
|
|
2182 | SV *cb; |
|
|
2183 | |
|
|
2184 | /* swap first two elements so we can shift a waiter */ |
|
|
2185 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2186 | AvARRAY (av)[1] = count_sv; |
|
|
2187 | cb = av_shift (av); |
|
|
2188 | |
|
|
2189 | if (SvOBJECT (cb)) |
|
|
2190 | { |
|
|
2191 | api_ready (aTHX_ cb); |
|
|
2192 | --count; |
|
|
2193 | } |
|
|
2194 | else if (SvTYPE (cb) == SVt_PVCV) |
|
|
2195 | { |
|
|
2196 | dSP; |
|
|
2197 | PUSHMARK (SP); |
|
|
2198 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2199 | PUTBACK; |
|
|
2200 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2201 | } |
|
|
2202 | |
|
|
2203 | SvREFCNT_dec (cb); |
|
|
2204 | } |
|
|
2205 | } |
|
|
2206 | |
|
|
2207 | static void |
|
|
2208 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2209 | { |
|
|
2210 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2211 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2212 | } |
|
|
2213 | |
|
|
2214 | static int |
|
|
2215 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
|
|
2216 | { |
|
|
2217 | AV *av = (AV *)frame->data; |
|
|
2218 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2219 | |
|
|
2220 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
|
|
2221 | if (CORO_THROW) |
|
|
2222 | return 0; |
|
|
2223 | else if (SvIVX (count_sv) > 0) |
|
|
2224 | { |
|
|
2225 | SvSTATE_current->on_destroy = 0; |
|
|
2226 | |
|
|
2227 | if (acquire) |
|
|
2228 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2229 | else |
|
|
2230 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2231 | |
|
|
2232 | return 0; |
|
|
2233 | } |
|
|
2234 | else |
|
|
2235 | { |
|
|
2236 | int i; |
|
|
2237 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2238 | /* waiters list and only add us if we aren't in there already */ |
|
|
2239 | /* this avoids some degenerate memory usage cases */ |
|
|
2240 | |
|
|
2241 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2242 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2243 | return 1; |
|
|
2244 | |
|
|
2245 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2246 | return 1; |
|
|
2247 | } |
|
|
2248 | } |
|
|
2249 | |
|
|
2250 | static int |
|
|
2251 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2252 | { |
|
|
2253 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2254 | } |
|
|
2255 | |
|
|
2256 | static int |
|
|
2257 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2258 | { |
|
|
2259 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2260 | } |
|
|
2261 | |
|
|
2262 | static void |
|
|
2263 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2264 | { |
|
|
2265 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2266 | |
|
|
2267 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2268 | { |
|
|
2269 | frame->data = (void *)av; |
|
|
2270 | frame->prepare = prepare_nop; |
|
|
2271 | } |
|
|
2272 | else |
|
|
2273 | { |
|
|
2274 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2275 | |
|
|
2276 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2277 | frame->prepare = prepare_schedule; |
|
|
2278 | |
|
|
2279 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2280 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2281 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2282 | } |
|
|
2283 | } |
|
|
2284 | |
|
|
2285 | static void |
|
|
2286 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2287 | { |
|
|
2288 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2289 | frame->check = slf_check_semaphore_down; |
|
|
2290 | } |
|
|
2291 | |
|
|
2292 | static void |
|
|
2293 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2294 | { |
|
|
2295 | if (items >= 2) |
|
|
2296 | { |
|
|
2297 | /* callback form */ |
|
|
2298 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2299 | CV *cb_cv = coro_sv_2cv (arg [1]); |
|
|
2300 | |
|
|
2301 | av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); |
|
|
2302 | |
|
|
2303 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2304 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2305 | |
|
|
2306 | frame->prepare = prepare_nop; |
|
|
2307 | frame->check = slf_check_nop; |
|
|
2308 | } |
|
|
2309 | else |
|
|
2310 | { |
|
|
2311 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2312 | frame->check = slf_check_semaphore_wait; |
|
|
2313 | } |
|
|
2314 | } |
|
|
2315 | |
|
|
2316 | /* signal */ |
|
|
2317 | |
|
|
2318 | static void |
|
|
2319 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
2320 | { |
|
|
2321 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2322 | |
|
|
2323 | /* now signal count waiters */ |
|
|
2324 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2325 | { |
|
|
2326 | SV *cb; |
|
|
2327 | |
|
|
2328 | /* swap first two elements so we can shift a waiter */ |
|
|
2329 | cb = AvARRAY (av)[0]; |
|
|
2330 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2331 | AvARRAY (av)[1] = cb; |
|
|
2332 | |
|
|
2333 | cb = av_shift (av); |
|
|
2334 | |
|
|
2335 | api_ready (aTHX_ cb); |
|
|
2336 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
2337 | SvREFCNT_dec (cb); |
|
|
2338 | |
|
|
2339 | --count; |
|
|
2340 | } |
|
|
2341 | } |
|
|
2342 | |
|
|
2343 | static int |
|
|
2344 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
2345 | { |
|
|
2346 | /* if we are about to throw, also stop waiting */ |
|
|
2347 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
2348 | } |
|
|
2349 | |
|
|
2350 | static void |
|
|
2351 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2352 | { |
|
|
2353 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2354 | |
|
|
2355 | if (SvIVX (AvARRAY (av)[0])) |
|
|
2356 | { |
|
|
2357 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2358 | frame->prepare = prepare_nop; |
|
|
2359 | frame->check = slf_check_nop; |
|
|
2360 | } |
|
|
2361 | else |
|
|
2362 | { |
|
|
2363 | SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ |
|
|
2364 | |
|
|
2365 | av_push (av, waiter); |
|
|
2366 | |
|
|
2367 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
2368 | frame->prepare = prepare_schedule; |
|
|
2369 | frame->check = slf_check_signal_wait; |
|
|
2370 | } |
|
|
2371 | } |
|
|
2372 | |
|
|
2373 | /*****************************************************************************/ |
|
|
2374 | /* Coro::AIO */ |
|
|
2375 | |
|
|
2376 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
2377 | |
|
|
2378 | /* helper storage struct */ |
|
|
2379 | struct io_state |
|
|
2380 | { |
|
|
2381 | int errorno; |
|
|
2382 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
2383 | int laststatval; |
|
|
2384 | Stat_t statcache; |
|
|
2385 | }; |
|
|
2386 | |
|
|
2387 | static void |
|
|
2388 | coro_aio_callback (pTHX_ CV *cv) |
|
|
2389 | { |
|
|
2390 | dXSARGS; |
|
|
2391 | AV *state = (AV *)GENSUB_ARG; |
|
|
2392 | SV *coro = av_pop (state); |
|
|
2393 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2394 | |
|
|
2395 | av_extend (state, items); |
|
|
2396 | |
|
|
2397 | sv_upgrade (data_sv, SVt_PV); |
|
|
2398 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2399 | SvPOK_only (data_sv); |
|
|
2400 | |
|
|
2401 | { |
|
|
2402 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2403 | |
|
|
2404 | data->errorno = errno; |
|
|
2405 | data->laststype = PL_laststype; |
|
|
2406 | data->laststatval = PL_laststatval; |
|
|
2407 | data->statcache = PL_statcache; |
|
|
2408 | } |
|
|
2409 | |
|
|
2410 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
2411 | { |
|
|
2412 | int i; |
|
|
2413 | |
|
|
2414 | for (i = 0; i < items; ++i) |
|
|
2415 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
2416 | } |
|
|
2417 | |
|
|
2418 | av_push (state, data_sv); |
|
|
2419 | |
|
|
2420 | api_ready (aTHX_ coro); |
|
|
2421 | SvREFCNT_dec (coro); |
|
|
2422 | SvREFCNT_dec ((AV *)state); |
|
|
2423 | } |
|
|
2424 | |
|
|
2425 | static int |
|
|
2426 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
2427 | { |
|
|
2428 | AV *state = (AV *)frame->data; |
|
|
2429 | |
|
|
2430 | /* if we are about to throw, return early */ |
|
|
2431 | /* this does not cancel the aio request, but at least */ |
|
|
2432 | /* it quickly returns */ |
|
|
2433 | if (CORO_THROW) |
|
|
2434 | return 0; |
|
|
2435 | |
|
|
2436 | /* one element that is an RV? repeat! */ |
|
|
2437 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
2438 | return 1; |
|
|
2439 | |
|
|
2440 | /* restore status */ |
|
|
2441 | { |
|
|
2442 | SV *data_sv = av_pop (state); |
|
|
2443 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2444 | |
|
|
2445 | errno = data->errorno; |
|
|
2446 | PL_laststype = data->laststype; |
|
|
2447 | PL_laststatval = data->laststatval; |
|
|
2448 | PL_statcache = data->statcache; |
|
|
2449 | |
|
|
2450 | SvREFCNT_dec (data_sv); |
|
|
2451 | } |
|
|
2452 | |
|
|
2453 | /* push result values */ |
|
|
2454 | { |
|
|
2455 | dSP; |
|
|
2456 | int i; |
|
|
2457 | |
|
|
2458 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
2459 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
2460 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
2461 | |
|
|
2462 | PUTBACK; |
|
|
2463 | } |
857 | |
2464 | |
858 | return 0; |
2465 | return 0; |
859 | } |
2466 | } |
860 | |
2467 | |
861 | static void |
2468 | static void |
862 | api_ready (SV *coro) |
2469 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
863 | { |
2470 | { |
864 | dTHX; |
2471 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
865 | |
|
|
866 | if (SvROK (coro)) |
|
|
867 | coro = SvRV (coro); |
|
|
868 | |
|
|
869 | LOCK; |
|
|
870 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
871 | UNLOCK; |
|
|
872 | } |
|
|
873 | |
|
|
874 | static void |
|
|
875 | api_schedule (void) |
|
|
876 | { |
|
|
877 | dTHX; |
|
|
878 | |
|
|
879 | SV *prev, *next; |
|
|
880 | |
|
|
881 | LOCK; |
|
|
882 | |
|
|
883 | prev = SvRV (GvSV (coro_current)); |
2472 | SV *coro_hv = SvRV (coro_current); |
884 | next = coro_deq (aTHX_ PRIO_MIN); |
2473 | struct coro *coro = SvSTATE_hv (coro_hv); |
885 | |
2474 | |
886 | if (!next) |
2475 | /* put our coroutine id on the state arg */ |
887 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
2476 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
888 | |
2477 | |
889 | /* free this only after the transfer */ |
2478 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
890 | coro_mortal = prev; |
2479 | if (coro->prio) |
891 | SV_CORO (prev, "Coro::schedule"); |
2480 | { |
|
|
2481 | dSP; |
892 | |
2482 | |
893 | SvRV (GvSV (coro_current)) = next; |
2483 | static SV *prio_cv; |
|
|
2484 | static SV *prio_sv; |
894 | |
2485 | |
895 | SV_CORO (next, "Coro::schedule"); |
2486 | if (expect_false (!prio_cv)) |
|
|
2487 | { |
|
|
2488 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
2489 | prio_sv = newSViv (0); |
|
|
2490 | } |
896 | |
2491 | |
897 | UNLOCK; |
2492 | PUSHMARK (SP); |
|
|
2493 | sv_setiv (prio_sv, coro->prio); |
|
|
2494 | XPUSHs (prio_sv); |
898 | |
2495 | |
899 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
2496 | PUTBACK; |
900 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
2497 | call_sv (prio_cv, G_VOID | G_DISCARD); |
901 | } |
2498 | } |
902 | |
2499 | |
903 | static void |
2500 | /* now call the original request */ |
904 | api_cede (void) |
2501 | { |
905 | { |
2502 | dSP; |
906 | dTHX; |
2503 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
2504 | int i; |
907 | |
2505 | |
908 | LOCK; |
2506 | PUSHMARK (SP); |
909 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
910 | UNLOCK; |
|
|
911 | |
2507 | |
912 | api_schedule (); |
2508 | /* first push all args to the stack */ |
913 | } |
2509 | EXTEND (SP, items + 1); |
914 | |
2510 | |
|
|
2511 | for (i = 0; i < items; ++i) |
|
|
2512 | PUSHs (arg [i]); |
|
|
2513 | |
|
|
2514 | /* now push the callback closure */ |
|
|
2515 | PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
2516 | |
|
|
2517 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
2518 | PUTBACK; |
|
|
2519 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
2520 | } |
|
|
2521 | |
|
|
2522 | /* now that the requets is going, we loop toll we have a result */ |
|
|
2523 | frame->data = (void *)state; |
|
|
2524 | frame->prepare = prepare_schedule; |
|
|
2525 | frame->check = slf_check_aio_req; |
|
|
2526 | } |
|
|
2527 | |
|
|
2528 | static void |
|
|
2529 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
2530 | { |
|
|
2531 | dXSARGS; |
|
|
2532 | |
|
|
2533 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
2534 | |
|
|
2535 | XSRETURN_EMPTY; |
|
|
2536 | } |
|
|
2537 | |
|
|
2538 | /*****************************************************************************/ |
|
|
2539 | |
915 | MODULE = Coro::State PACKAGE = Coro::State |
2540 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
916 | |
2541 | |
917 | PROTOTYPES: ENABLE |
2542 | PROTOTYPES: DISABLE |
918 | |
2543 | |
919 | BOOT: |
2544 | BOOT: |
920 | { /* {} necessary for stoopid perl-5.6.x */ |
2545 | { |
921 | #ifdef USE_ITHREADS |
2546 | #ifdef USE_ITHREADS |
922 | MUTEX_INIT (&coro_mutex); |
2547 | # if CORO_PTHREAD |
|
|
2548 | coro_thx = PERL_GET_CONTEXT; |
|
|
2549 | # endif |
923 | #endif |
2550 | #endif |
924 | BOOT_PAGESIZE; |
2551 | BOOT_PAGESIZE; |
925 | |
2552 | |
926 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2553 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
927 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2554 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
2555 | |
|
|
2556 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
2557 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
2558 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
2559 | |
|
|
2560 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
2561 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
2562 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
2563 | |
928 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2564 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
929 | |
2565 | |
930 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
2566 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
931 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
2567 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
932 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
2568 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
933 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
2569 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
934 | |
2570 | |
935 | main_mainstack = PL_mainstack; |
2571 | main_mainstack = PL_mainstack; |
|
|
2572 | main_top_env = PL_top_env; |
936 | |
2573 | |
|
|
2574 | while (main_top_env->je_prev) |
|
|
2575 | main_top_env = main_top_env->je_prev; |
|
|
2576 | |
|
|
2577 | { |
|
|
2578 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
2579 | |
|
|
2580 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
2581 | hv_store_ent (PL_custom_op_names, slf, |
|
|
2582 | newSVpv ("coro_slf", 0), 0); |
|
|
2583 | |
|
|
2584 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
2585 | hv_store_ent (PL_custom_op_descs, slf, |
|
|
2586 | newSVpv ("coro schedule like function", 0), 0); |
|
|
2587 | } |
|
|
2588 | |
937 | coroapi.ver = CORO_API_VERSION; |
2589 | coroapi.ver = CORO_API_VERSION; |
|
|
2590 | coroapi.rev = CORO_API_REVISION; |
|
|
2591 | |
938 | coroapi.transfer = api_transfer; |
2592 | coroapi.transfer = api_transfer; |
939 | } |
|
|
940 | |
2593 | |
941 | Coro::State |
2594 | coroapi.sv_state = SvSTATE_; |
942 | _newprocess(args) |
2595 | coroapi.execute_slf = api_execute_slf; |
943 | SV * args |
2596 | coroapi.prepare_nop = prepare_nop; |
944 | PROTOTYPE: $ |
2597 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2598 | coroapi.prepare_cede = prepare_cede; |
|
|
2599 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
2600 | |
|
|
2601 | { |
|
|
2602 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
2603 | |
|
|
2604 | if (!svp) croak ("Time::HiRes is required"); |
|
|
2605 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
2606 | |
|
|
2607 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
2608 | } |
|
|
2609 | |
|
|
2610 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
2611 | } |
|
|
2612 | |
|
|
2613 | SV * |
|
|
2614 | new (char *klass, ...) |
945 | CODE: |
2615 | CODE: |
946 | Coro__State coro; |
2616 | { |
|
|
2617 | struct coro *coro; |
|
|
2618 | MAGIC *mg; |
|
|
2619 | HV *hv; |
|
|
2620 | CV *cb; |
|
|
2621 | int i; |
947 | |
2622 | |
948 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
2623 | if (items > 1) |
949 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
950 | |
2624 | { |
|
|
2625 | cb = coro_sv_2cv (ST (1)); |
|
|
2626 | |
|
|
2627 | if (CvISXSUB (cb)) |
|
|
2628 | croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
|
|
2629 | |
|
|
2630 | if (!CvROOT (cb)) |
|
|
2631 | croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
|
|
2632 | } |
|
|
2633 | |
951 | Newz (0, coro, 1, struct coro); |
2634 | Newz (0, coro, 1, struct coro); |
|
|
2635 | coro->args = newAV (); |
|
|
2636 | coro->flags = CF_NEW; |
952 | |
2637 | |
953 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
2638 | if (coro_first) coro_first->prev = coro; |
954 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
2639 | coro->next = coro_first; |
955 | /*coro->stack = 0;*/ |
2640 | coro_first = coro; |
956 | |
2641 | |
957 | /* same as JMPENV_BOOTSTRAP */ |
2642 | coro->hv = hv = newHV (); |
958 | /* we might be able to recycle start_env, but safe is safe */ |
2643 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
959 | /*Zero (&coro->start_env, 1, JMPENV);*/ |
2644 | mg->mg_flags |= MGf_DUP; |
960 | coro->start_env.je_ret = -1; |
2645 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
961 | coro->start_env.je_mustcatch = TRUE; |
|
|
962 | |
2646 | |
963 | RETVAL = coro; |
2647 | if (items > 1) |
|
|
2648 | { |
|
|
2649 | coro->startcv = SvREFCNT_inc_NN (cb); |
|
|
2650 | |
|
|
2651 | av_extend (coro->args, items - 1); |
|
|
2652 | av_push (coro->args, SvREFCNT_inc (cb)); |
|
|
2653 | for (i = 2; i < items; i++) |
|
|
2654 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2655 | } |
|
|
2656 | } |
964 | OUTPUT: |
2657 | OUTPUT: |
965 | RETVAL |
2658 | RETVAL |
966 | |
2659 | |
967 | void |
2660 | void |
968 | transfer(prev, next, flags) |
2661 | transfer (...) |
969 | SV *prev |
|
|
970 | SV *next |
|
|
971 | int flags |
|
|
972 | PROTOTYPE: @ |
2662 | PROTOTYPE: $$ |
973 | CODE: |
2663 | CODE: |
974 | PUTBACK; |
2664 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
975 | SV_CORO (next, "Coro::transfer"); |
2665 | |
976 | SV_CORO (prev, "Coro::transfer"); |
2666 | bool |
977 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
2667 | _destroy (SV *coro_sv) |
978 | SPAGAIN; |
2668 | CODE: |
|
|
2669 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
|
|
2670 | OUTPUT: |
|
|
2671 | RETVAL |
979 | |
2672 | |
980 | void |
2673 | void |
981 | DESTROY(coro) |
|
|
982 | Coro::State coro |
|
|
983 | CODE: |
|
|
984 | |
|
|
985 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
986 | { |
|
|
987 | struct coro temp; |
|
|
988 | |
|
|
989 | PUTBACK; |
|
|
990 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
991 | LOAD (aTHX_ coro); |
|
|
992 | SPAGAIN; |
|
|
993 | |
|
|
994 | destroy_stacks (aTHX); |
|
|
995 | |
|
|
996 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
997 | SPAGAIN; |
|
|
998 | |
|
|
999 | coro->mainstack = 0; |
|
|
1000 | } |
|
|
1001 | |
|
|
1002 | deallocate_stack (coro); |
|
|
1003 | SvREFCNT_dec (coro->args); |
|
|
1004 | Safefree (coro); |
|
|
1005 | |
|
|
1006 | void |
|
|
1007 | _exit(code) |
2674 | _exit (int code) |
1008 | int code |
|
|
1009 | PROTOTYPE: $ |
2675 | PROTOTYPE: $ |
1010 | CODE: |
2676 | CODE: |
1011 | _exit (code); |
2677 | _exit (code); |
1012 | |
2678 | |
1013 | MODULE = Coro::State PACKAGE = Coro::Cont |
2679 | int |
|
|
2680 | cctx_stacksize (int new_stacksize = 0) |
|
|
2681 | PROTOTYPE: ;$ |
|
|
2682 | CODE: |
|
|
2683 | RETVAL = cctx_stacksize; |
|
|
2684 | if (new_stacksize) |
|
|
2685 | { |
|
|
2686 | cctx_stacksize = new_stacksize; |
|
|
2687 | ++cctx_gen; |
|
|
2688 | } |
|
|
2689 | OUTPUT: |
|
|
2690 | RETVAL |
1014 | |
2691 | |
1015 | # this is slightly dirty (should expose a c-level api) |
2692 | int |
|
|
2693 | cctx_max_idle (int max_idle = 0) |
|
|
2694 | PROTOTYPE: ;$ |
|
|
2695 | CODE: |
|
|
2696 | RETVAL = cctx_max_idle; |
|
|
2697 | if (max_idle > 1) |
|
|
2698 | cctx_max_idle = max_idle; |
|
|
2699 | OUTPUT: |
|
|
2700 | RETVAL |
|
|
2701 | |
|
|
2702 | int |
|
|
2703 | cctx_count () |
|
|
2704 | PROTOTYPE: |
|
|
2705 | CODE: |
|
|
2706 | RETVAL = cctx_count; |
|
|
2707 | OUTPUT: |
|
|
2708 | RETVAL |
|
|
2709 | |
|
|
2710 | int |
|
|
2711 | cctx_idle () |
|
|
2712 | PROTOTYPE: |
|
|
2713 | CODE: |
|
|
2714 | RETVAL = cctx_idle; |
|
|
2715 | OUTPUT: |
|
|
2716 | RETVAL |
1016 | |
2717 | |
1017 | void |
2718 | void |
1018 | yield(...) |
2719 | list () |
1019 | PROTOTYPE: @ |
2720 | PROTOTYPE: |
|
|
2721 | PPCODE: |
|
|
2722 | { |
|
|
2723 | struct coro *coro; |
|
|
2724 | for (coro = coro_first; coro; coro = coro->next) |
|
|
2725 | if (coro->hv) |
|
|
2726 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
2727 | } |
|
|
2728 | |
|
|
2729 | void |
|
|
2730 | call (Coro::State coro, SV *coderef) |
|
|
2731 | ALIAS: |
|
|
2732 | eval = 1 |
|
|
2733 | CODE: |
|
|
2734 | { |
|
|
2735 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
2736 | { |
|
|
2737 | struct coro temp; |
|
|
2738 | |
|
|
2739 | if (!(coro->flags & CF_RUNNING)) |
|
|
2740 | { |
|
|
2741 | PUTBACK; |
|
|
2742 | save_perl (aTHX_ &temp); |
|
|
2743 | load_perl (aTHX_ coro); |
|
|
2744 | } |
|
|
2745 | |
|
|
2746 | { |
|
|
2747 | dSP; |
|
|
2748 | ENTER; |
|
|
2749 | SAVETMPS; |
|
|
2750 | PUTBACK; |
|
|
2751 | PUSHSTACK; |
|
|
2752 | PUSHMARK (SP); |
|
|
2753 | |
|
|
2754 | if (ix) |
|
|
2755 | eval_sv (coderef, 0); |
|
|
2756 | else |
|
|
2757 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
2758 | |
|
|
2759 | POPSTACK; |
|
|
2760 | SPAGAIN; |
|
|
2761 | FREETMPS; |
|
|
2762 | LEAVE; |
|
|
2763 | PUTBACK; |
|
|
2764 | } |
|
|
2765 | |
|
|
2766 | if (!(coro->flags & CF_RUNNING)) |
|
|
2767 | { |
|
|
2768 | save_perl (aTHX_ coro); |
|
|
2769 | load_perl (aTHX_ &temp); |
|
|
2770 | SPAGAIN; |
|
|
2771 | } |
|
|
2772 | } |
|
|
2773 | } |
|
|
2774 | |
|
|
2775 | SV * |
|
|
2776 | is_ready (Coro::State coro) |
|
|
2777 | PROTOTYPE: $ |
|
|
2778 | ALIAS: |
|
|
2779 | is_ready = CF_READY |
|
|
2780 | is_running = CF_RUNNING |
|
|
2781 | is_new = CF_NEW |
|
|
2782 | is_destroyed = CF_DESTROYED |
|
|
2783 | CODE: |
|
|
2784 | RETVAL = boolSV (coro->flags & ix); |
|
|
2785 | OUTPUT: |
|
|
2786 | RETVAL |
|
|
2787 | |
|
|
2788 | void |
|
|
2789 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
|
|
2790 | PROTOTYPE: $;$ |
1020 | CODE: |
2791 | CODE: |
1021 | SV *yieldstack; |
2792 | { |
1022 | SV *sv; |
2793 | struct coro *current = SvSTATE_current; |
1023 | AV *defav = GvAV (PL_defgv); |
2794 | SV **throwp = self == current ? &CORO_THROW : &self->except; |
1024 | struct coro *prev, *next; |
2795 | SvREFCNT_dec (*throwp); |
|
|
2796 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
2797 | } |
1025 | |
2798 | |
1026 | yieldstack = *hv_fetch ( |
2799 | void |
1027 | (HV *)SvRV (GvSV (coro_current)), |
2800 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
1028 | "yieldstack", sizeof ("yieldstack") - 1, |
2801 | PROTOTYPE: $;$ |
|
|
2802 | C_ARGS: aTHX_ coro, flags |
|
|
2803 | |
|
|
2804 | SV * |
|
|
2805 | has_cctx (Coro::State coro) |
|
|
2806 | PROTOTYPE: $ |
|
|
2807 | CODE: |
|
|
2808 | RETVAL = boolSV (!!coro->cctx); |
|
|
2809 | OUTPUT: |
|
|
2810 | RETVAL |
|
|
2811 | |
|
|
2812 | int |
|
|
2813 | is_traced (Coro::State coro) |
|
|
2814 | PROTOTYPE: $ |
|
|
2815 | CODE: |
|
|
2816 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
2817 | OUTPUT: |
|
|
2818 | RETVAL |
|
|
2819 | |
|
|
2820 | UV |
|
|
2821 | rss (Coro::State coro) |
|
|
2822 | PROTOTYPE: $ |
|
|
2823 | ALIAS: |
|
|
2824 | usecount = 1 |
|
|
2825 | CODE: |
|
|
2826 | switch (ix) |
|
|
2827 | { |
|
|
2828 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
2829 | case 1: RETVAL = coro->usecount; break; |
1029 | 0 |
2830 | } |
|
|
2831 | OUTPUT: |
|
|
2832 | RETVAL |
|
|
2833 | |
|
|
2834 | void |
|
|
2835 | force_cctx () |
|
|
2836 | PROTOTYPE: |
|
|
2837 | CODE: |
|
|
2838 | SvSTATE_current->cctx->idle_sp = 0; |
|
|
2839 | |
|
|
2840 | void |
|
|
2841 | swap_defsv (Coro::State self) |
|
|
2842 | PROTOTYPE: $ |
|
|
2843 | ALIAS: |
|
|
2844 | swap_defav = 1 |
|
|
2845 | CODE: |
|
|
2846 | if (!self->slot) |
|
|
2847 | croak ("cannot swap state with coroutine that has no saved state,"); |
|
|
2848 | else |
1030 | ); |
2849 | { |
|
|
2850 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
2851 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
1031 | |
2852 | |
1032 | /* set up @_ -- ugly */ |
2853 | SV *tmp = *src; *src = *dst; *dst = tmp; |
1033 | av_clear (defav); |
2854 | } |
1034 | av_fill (defav, items - 1); |
|
|
1035 | while (items--) |
|
|
1036 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1037 | |
2855 | |
1038 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1039 | prev = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0)))); |
|
|
1040 | next = INT2PTR (struct coro *, SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0)))); |
|
|
1041 | SvREFCNT_dec (sv); |
|
|
1042 | |
|
|
1043 | transfer (aTHX_ prev, next, 0); |
|
|
1044 | |
2856 | |
1045 | MODULE = Coro::State PACKAGE = Coro |
2857 | MODULE = Coro::State PACKAGE = Coro |
1046 | |
2858 | |
1047 | # this is slightly dirty (should expose a c-level api) |
|
|
1048 | |
|
|
1049 | BOOT: |
2859 | BOOT: |
1050 | { |
2860 | { |
1051 | int i; |
2861 | int i; |
|
|
2862 | |
|
|
2863 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
2864 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
2865 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
2866 | |
|
|
2867 | coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
|
|
2868 | SvREADONLY_on (coro_current); |
|
|
2869 | |
1052 | HV *stash = gv_stashpv ("Coro", TRUE); |
2870 | coro_stash = gv_stashpv ("Coro", TRUE); |
1053 | |
2871 | |
1054 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2872 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1055 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2873 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1056 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2874 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1057 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2875 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1058 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2876 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1059 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2877 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1060 | |
|
|
1061 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1062 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1063 | |
2878 | |
1064 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2879 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1065 | coro_ready[i] = newAV (); |
2880 | coro_ready[i] = newAV (); |
1066 | |
2881 | |
1067 | { |
2882 | { |
1068 | SV *sv = perl_get_sv("Coro::API", 1); |
2883 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
1069 | |
2884 | |
1070 | coroapi.schedule = api_schedule; |
2885 | coroapi.schedule = api_schedule; |
1071 | coroapi.cede = api_cede; |
2886 | coroapi.cede = api_cede; |
|
|
2887 | coroapi.cede_notself = api_cede_notself; |
1072 | coroapi.ready = api_ready; |
2888 | coroapi.ready = api_ready; |
|
|
2889 | coroapi.is_ready = api_is_ready; |
1073 | coroapi.nready = &coro_nready; |
2890 | coroapi.nready = coro_nready; |
1074 | coroapi.current = coro_current; |
2891 | coroapi.current = coro_current; |
1075 | |
2892 | |
1076 | GCoroAPI = &coroapi; |
2893 | /*GCoroAPI = &coroapi;*/ |
1077 | sv_setiv(sv, (IV)&coroapi); |
2894 | sv_setiv (sv, (IV)&coroapi); |
1078 | SvREADONLY_on(sv); |
2895 | SvREADONLY_on (sv); |
1079 | } |
2896 | } |
1080 | } |
2897 | } |
1081 | |
2898 | |
1082 | #if !PERL_MICRO |
|
|
1083 | |
|
|
1084 | void |
2899 | void |
1085 | ready(self) |
2900 | schedule (...) |
1086 | SV * self |
2901 | CODE: |
|
|
2902 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
2903 | |
|
|
2904 | void |
|
|
2905 | cede (...) |
|
|
2906 | CODE: |
|
|
2907 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
2908 | |
|
|
2909 | void |
|
|
2910 | cede_notself (...) |
|
|
2911 | CODE: |
|
|
2912 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
2913 | |
|
|
2914 | void |
|
|
2915 | _set_current (SV *current) |
1087 | PROTOTYPE: $ |
2916 | PROTOTYPE: $ |
1088 | CODE: |
2917 | CODE: |
1089 | api_ready (self); |
2918 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
2919 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
1090 | |
2920 | |
1091 | #endif |
2921 | void |
|
|
2922 | _set_readyhook (SV *hook) |
|
|
2923 | PROTOTYPE: $ |
|
|
2924 | CODE: |
|
|
2925 | SvREFCNT_dec (coro_readyhook); |
|
|
2926 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
1092 | |
2927 | |
1093 | int |
2928 | int |
|
|
2929 | prio (Coro::State coro, int newprio = 0) |
|
|
2930 | PROTOTYPE: $;$ |
|
|
2931 | ALIAS: |
|
|
2932 | nice = 1 |
|
|
2933 | CODE: |
|
|
2934 | { |
|
|
2935 | RETVAL = coro->prio; |
|
|
2936 | |
|
|
2937 | if (items > 1) |
|
|
2938 | { |
|
|
2939 | if (ix) |
|
|
2940 | newprio = coro->prio - newprio; |
|
|
2941 | |
|
|
2942 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
2943 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
2944 | |
|
|
2945 | coro->prio = newprio; |
|
|
2946 | } |
|
|
2947 | } |
|
|
2948 | OUTPUT: |
|
|
2949 | RETVAL |
|
|
2950 | |
|
|
2951 | SV * |
|
|
2952 | ready (SV *self) |
|
|
2953 | PROTOTYPE: $ |
|
|
2954 | CODE: |
|
|
2955 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
2956 | OUTPUT: |
|
|
2957 | RETVAL |
|
|
2958 | |
|
|
2959 | int |
1094 | nready(...) |
2960 | nready (...) |
1095 | PROTOTYPE: |
2961 | PROTOTYPE: |
1096 | CODE: |
2962 | CODE: |
1097 | RETVAL = coro_nready; |
2963 | RETVAL = coro_nready; |
1098 | OUTPUT: |
2964 | OUTPUT: |
1099 | RETVAL |
2965 | RETVAL |
1100 | |
2966 | |
|
|
2967 | # for async_pool speedup |
1101 | void |
2968 | void |
1102 | schedule(...) |
2969 | _pool_1 (SV *cb) |
1103 | PROTOTYPE: |
|
|
1104 | CODE: |
2970 | CODE: |
1105 | api_schedule (); |
2971 | { |
|
|
2972 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2973 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2974 | AV *defav = GvAV (PL_defgv); |
|
|
2975 | SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
|
|
2976 | AV *invoke_av; |
|
|
2977 | int i, len; |
|
|
2978 | |
|
|
2979 | if (!invoke) |
|
|
2980 | { |
|
|
2981 | SV *old = PL_diehook; |
|
|
2982 | PL_diehook = 0; |
|
|
2983 | SvREFCNT_dec (old); |
|
|
2984 | croak ("\3async_pool terminate\2\n"); |
|
|
2985 | } |
|
|
2986 | |
|
|
2987 | SvREFCNT_dec (coro->saved_deffh); |
|
|
2988 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2989 | |
|
|
2990 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2991 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2992 | |
|
|
2993 | invoke_av = (AV *)SvRV (invoke); |
|
|
2994 | len = av_len (invoke_av); |
|
|
2995 | |
|
|
2996 | sv_setsv (cb, AvARRAY (invoke_av)[0]); |
|
|
2997 | |
|
|
2998 | if (len > 0) |
|
|
2999 | { |
|
|
3000 | av_fill (defav, len - 1); |
|
|
3001 | for (i = 0; i < len; ++i) |
|
|
3002 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
|
|
3003 | } |
|
|
3004 | } |
1106 | |
3005 | |
1107 | void |
3006 | void |
1108 | cede(...) |
3007 | _pool_2 (SV *cb) |
1109 | PROTOTYPE: |
|
|
1110 | CODE: |
3008 | CODE: |
1111 | api_cede (); |
3009 | { |
|
|
3010 | HV *hv = (HV *)SvRV (coro_current); |
|
|
3011 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
1112 | |
3012 | |
1113 | # and these are hacks |
3013 | sv_setsv (cb, &PL_sv_undef); |
|
|
3014 | |
|
|
3015 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
3016 | coro->saved_deffh = 0; |
|
|
3017 | |
|
|
3018 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
3019 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
3020 | { |
|
|
3021 | SV *old = PL_diehook; |
|
|
3022 | PL_diehook = 0; |
|
|
3023 | SvREFCNT_dec (old); |
|
|
3024 | croak ("\3async_pool terminate\2\n"); |
|
|
3025 | } |
|
|
3026 | |
|
|
3027 | av_clear (GvAV (PL_defgv)); |
|
|
3028 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
3029 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
|
|
3030 | |
|
|
3031 | coro->prio = 0; |
|
|
3032 | |
|
|
3033 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
3034 | api_trace (aTHX_ coro_current, 0); |
|
|
3035 | |
|
|
3036 | av_push (av_async_pool, newSVsv (coro_current)); |
|
|
3037 | } |
|
|
3038 | |
1114 | SV * |
3039 | SV * |
1115 | _aio_get_state () |
3040 | rouse_cb () |
|
|
3041 | PROTOTYPE: |
1116 | CODE: |
3042 | CODE: |
1117 | { |
3043 | RETVAL = coro_new_rouse_cb (aTHX); |
1118 | struct { |
|
|
1119 | int errorno; |
|
|
1120 | int laststype; |
|
|
1121 | int laststatval; |
|
|
1122 | Stat_t statcache; |
|
|
1123 | } data; |
|
|
1124 | |
|
|
1125 | data.errorno = errno; |
|
|
1126 | data.laststype = PL_laststype; |
|
|
1127 | data.laststatval = PL_laststatval; |
|
|
1128 | data.statcache = PL_statcache; |
|
|
1129 | |
|
|
1130 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1131 | } |
|
|
1132 | OUTPUT: |
3044 | OUTPUT: |
1133 | RETVAL |
3045 | RETVAL |
1134 | |
3046 | |
1135 | void |
3047 | void |
1136 | _aio_set_state (char *data_) |
3048 | rouse_wait (...) |
1137 | PROTOTYPE: $ |
3049 | PROTOTYPE: ;$ |
|
|
3050 | PPCODE: |
|
|
3051 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
|
|
3052 | |
|
|
3053 | |
|
|
3054 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
3055 | |
|
|
3056 | BOOT: |
|
|
3057 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
3058 | |
|
|
3059 | |
|
|
3060 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
3061 | |
|
|
3062 | SV * |
|
|
3063 | new (SV *klass, SV *count = 0) |
1138 | CODE: |
3064 | CODE: |
|
|
3065 | RETVAL = sv_bless ( |
|
|
3066 | coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), |
|
|
3067 | GvSTASH (CvGV (cv)) |
|
|
3068 | ); |
|
|
3069 | OUTPUT: |
|
|
3070 | RETVAL |
|
|
3071 | |
|
|
3072 | # helper for Coro::Channel |
|
|
3073 | SV * |
|
|
3074 | _alloc (int count) |
|
|
3075 | CODE: |
|
|
3076 | RETVAL = coro_waitarray_new (aTHX_ count); |
|
|
3077 | OUTPUT: |
|
|
3078 | RETVAL |
|
|
3079 | |
|
|
3080 | SV * |
|
|
3081 | count (SV *self) |
|
|
3082 | CODE: |
|
|
3083 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
3084 | OUTPUT: |
|
|
3085 | RETVAL |
|
|
3086 | |
|
|
3087 | void |
|
|
3088 | up (SV *self, int adjust = 1) |
|
|
3089 | ALIAS: |
|
|
3090 | adjust = 1 |
|
|
3091 | CODE: |
|
|
3092 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
|
|
3093 | |
|
|
3094 | void |
|
|
3095 | down (...) |
|
|
3096 | CODE: |
|
|
3097 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
3098 | |
|
|
3099 | void |
|
|
3100 | wait (...) |
|
|
3101 | CODE: |
|
|
3102 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
|
|
3103 | |
|
|
3104 | void |
|
|
3105 | try (SV *self) |
|
|
3106 | PPCODE: |
1139 | { |
3107 | { |
1140 | struct { |
3108 | AV *av = (AV *)SvRV (self); |
|
|
3109 | SV *count_sv = AvARRAY (av)[0]; |
|
|
3110 | IV count = SvIVX (count_sv); |
|
|
3111 | |
|
|
3112 | if (count > 0) |
|
|
3113 | { |
|
|
3114 | --count; |
|
|
3115 | SvIVX (count_sv) = count; |
|
|
3116 | XSRETURN_YES; |
|
|
3117 | } |
|
|
3118 | else |
|
|
3119 | XSRETURN_NO; |
|
|
3120 | } |
|
|
3121 | |
|
|
3122 | void |
|
|
3123 | waiters (SV *self) |
|
|
3124 | PPCODE: |
|
|
3125 | { |
|
|
3126 | AV *av = (AV *)SvRV (self); |
|
|
3127 | int wcount = AvFILLp (av) + 1 - 1; |
|
|
3128 | |
|
|
3129 | if (GIMME_V == G_SCALAR) |
|
|
3130 | XPUSHs (sv_2mortal (newSViv (wcount))); |
|
|
3131 | else |
|
|
3132 | { |
1141 | int errorno; |
3133 | int i; |
1142 | int laststype; |
3134 | EXTEND (SP, wcount); |
1143 | int laststatval; |
3135 | for (i = 1; i <= wcount; ++i) |
1144 | Stat_t statcache; |
3136 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
1145 | } *data = (void *)data_; |
3137 | } |
1146 | |
|
|
1147 | errno = data->errorno; |
|
|
1148 | PL_laststype = data->laststype; |
|
|
1149 | PL_laststatval = data->laststatval; |
|
|
1150 | PL_statcache = data->statcache; |
|
|
1151 | } |
3138 | } |
|
|
3139 | |
|
|
3140 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
3141 | |
|
|
3142 | SV * |
|
|
3143 | new (SV *klass) |
|
|
3144 | CODE: |
|
|
3145 | RETVAL = sv_bless ( |
|
|
3146 | coro_waitarray_new (aTHX_ 0), |
|
|
3147 | GvSTASH (CvGV (cv)) |
|
|
3148 | ); |
|
|
3149 | OUTPUT: |
|
|
3150 | RETVAL |
|
|
3151 | |
|
|
3152 | void |
|
|
3153 | wait (...) |
|
|
3154 | CODE: |
|
|
3155 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
|
|
3156 | |
|
|
3157 | void |
|
|
3158 | broadcast (SV *self) |
|
|
3159 | CODE: |
|
|
3160 | { |
|
|
3161 | AV *av = (AV *)SvRV (self); |
|
|
3162 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
3163 | } |
|
|
3164 | |
|
|
3165 | void |
|
|
3166 | send (SV *self) |
|
|
3167 | CODE: |
|
|
3168 | { |
|
|
3169 | AV *av = (AV *)SvRV (self); |
|
|
3170 | |
|
|
3171 | if (AvFILLp (av)) |
|
|
3172 | coro_signal_wake (aTHX_ av, 1); |
|
|
3173 | else |
|
|
3174 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
3175 | } |
|
|
3176 | |
|
|
3177 | IV |
|
|
3178 | awaited (SV *self) |
|
|
3179 | CODE: |
|
|
3180 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
3181 | OUTPUT: |
|
|
3182 | RETVAL |
|
|
3183 | |
|
|
3184 | |
|
|
3185 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
3186 | |
|
|
3187 | BOOT: |
|
|
3188 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
3189 | |
|
|
3190 | void |
|
|
3191 | _schedule (...) |
|
|
3192 | CODE: |
|
|
3193 | { |
|
|
3194 | static int incede; |
|
|
3195 | |
|
|
3196 | api_cede_notself (aTHX); |
|
|
3197 | |
|
|
3198 | ++incede; |
|
|
3199 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
3200 | ; |
|
|
3201 | |
|
|
3202 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
3203 | if (coro_nready >= incede) |
|
|
3204 | { |
|
|
3205 | PUSHMARK (SP); |
|
|
3206 | PUTBACK; |
|
|
3207 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3208 | } |
|
|
3209 | |
|
|
3210 | --incede; |
|
|
3211 | } |
|
|
3212 | |
|
|
3213 | |
|
|
3214 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
3215 | |
|
|
3216 | void |
|
|
3217 | _register (char *target, char *proto, SV *req) |
|
|
3218 | CODE: |
|
|
3219 | { |
|
|
3220 | CV *req_cv = coro_sv_2cv (req); |
|
|
3221 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
3222 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
3223 | sv_setpv ((SV *)slf_cv, proto); |
|
|
3224 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
3225 | } |
|
|
3226 | |