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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, don't ask |
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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 |
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… | |
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 <stdio.h> |
83 | /* 5.11 */ |
33 | #include <errno.h> |
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 | |
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101 | /* 5.8.7 */ |
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102 | #ifndef SvRV_set |
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103 | # define SvRV_set(s,v) SvRV(s) = (v) |
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104 | #endif |
34 | |
105 | |
35 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
106 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
36 | # undef STACKGUARD |
107 | # undef CORO_STACKGUARD |
37 | #endif |
108 | #endif |
38 | |
109 | |
39 | #ifndef STACKGUARD |
110 | #ifndef CORO_STACKGUARD |
40 | # define STACKGUARD 0 |
111 | # define CORO_STACKGUARD 0 |
41 | #endif |
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42 | |
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43 | #ifdef HAVE_MMAP |
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44 | # include <unistd.h> |
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45 | # include <sys/mman.h> |
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46 | # ifndef MAP_ANONYMOUS |
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47 | # ifdef MAP_ANON |
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48 | # define MAP_ANONYMOUS MAP_ANON |
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49 | # else |
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50 | # undef HAVE_MMAP |
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51 | # endif |
112 | #endif |
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113 | |
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114 | /* prefer perl internal functions over our own? */ |
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115 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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116 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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117 | #endif |
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118 | |
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119 | /* The next macros try to return the current stack pointer, in an as |
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120 | * portable way as possible. */ |
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121 | #if __GNUC__ >= 4 |
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122 | # define dSTACKLEVEL void *stacklevel = __builtin_frame_address (0) |
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123 | #else |
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124 | # define dSTACKLEVEL volatile void *stacklevel = (volatile void *)&stacklevel |
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125 | #endif |
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126 | |
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127 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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128 | |
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129 | #if __GNUC__ >= 3 |
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130 | # define attribute(x) __attribute__(x) |
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131 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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132 | # define INLINE static inline |
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133 | #else |
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134 | # define attribute(x) |
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135 | # define expect(expr,value) (expr) |
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136 | # define INLINE static |
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137 | #endif |
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138 | |
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139 | #define expect_false(expr) expect ((expr) != 0, 0) |
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140 | #define expect_true(expr) expect ((expr) != 0, 1) |
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141 | |
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142 | #define NOINLINE attribute ((noinline)) |
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143 | |
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144 | #include "CoroAPI.h" |
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145 | |
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146 | #ifdef USE_ITHREADS |
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147 | # if CORO_PTHREAD |
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148 | static void *coro_thx; |
52 | # endif |
149 | # endif |
53 | # include <limits.h> |
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54 | # ifndef PAGESIZE |
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55 | # define PAGESIZE pagesize |
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56 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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57 | static long pagesize; |
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58 | # else |
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59 | # define BOOT_PAGESIZE |
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60 | # endif |
150 | #endif |
61 | #endif |
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62 | |
151 | |
63 | /* The next macro should declare a variable stacklevel that contains and approximation |
152 | /* helper storage struct for Coro::AIO */ |
64 | * to the current C stack pointer. Its property is that it changes with each call |
153 | struct io_state |
65 | * and should be unique. */ |
154 | { |
66 | #define dSTACKLEVEL int stacklevel |
155 | AV *res; |
67 | #define STACKLEVEL ((void *)&stacklevel) |
156 | int errorno; |
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157 | I32 laststype; /* U16 in 5.10.0 */ |
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158 | int laststatval; |
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159 | Stat_t statcache; |
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160 | }; |
68 | |
161 | |
69 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
162 | static double (*nvtime)(); /* so why doesn't it take void? */ |
70 | |
163 | |
71 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
164 | static U32 cctx_gen; |
72 | |
165 | static size_t cctx_stacksize = CORO_STACKSIZE; |
73 | #include "CoroAPI.h" |
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74 | |
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75 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
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76 | |
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77 | #ifdef USE_ITHREADS |
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78 | static perl_mutex coro_mutex; |
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79 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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80 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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81 | #else |
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82 | # define LOCK (void)0 |
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83 | # define UNLOCK (void)0 |
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84 | #endif |
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85 | |
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86 | static struct CoroAPI coroapi; |
166 | static struct CoroAPI coroapi; |
87 | 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; |
88 | static HV *coro_state_stash, *coro_stash; |
169 | static HV *coro_state_stash, *coro_stash; |
89 | static SV *coro_mortal; /* will be freed after next transfer */ |
170 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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171 | static volatile struct coro *transfer_next; |
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172 | |
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173 | static GV *irsgv; /* $/ */ |
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174 | static GV *stdoutgv; /* *STDOUT */ |
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175 | static SV *rv_diehook; |
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176 | static SV *rv_warnhook; |
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177 | static HV *hv_sig; /* %SIG */ |
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178 | |
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179 | /* async_pool helper stuff */ |
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180 | static SV *sv_pool_rss; |
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181 | static SV *sv_pool_size; |
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182 | static AV *av_async_pool; |
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183 | |
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184 | /* Coro::AnyEvent */ |
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185 | static SV *sv_activity; |
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186 | |
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187 | static struct coro_cctx *cctx_first; |
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188 | static int cctx_count, cctx_idle; |
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189 | |
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190 | enum { |
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191 | CC_MAPPED = 0x01, |
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192 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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193 | CC_TRACE = 0x04, |
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194 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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195 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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196 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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197 | }; |
90 | |
198 | |
91 | /* this is a structure representing a c-level coroutine */ |
199 | /* this is a structure representing a c-level coroutine */ |
92 | typedef struct coro_stack { |
200 | typedef struct coro_cctx |
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201 | { |
93 | struct coro_stack *next; |
202 | struct coro_cctx *next; |
94 | |
203 | |
95 | void *idle_sp; /* original stacklevel when coroutine was created */ |
204 | /* the stack */ |
96 | void *sptr; |
205 | void *sptr; |
97 | long ssize; /* positive == mmap, otherwise malloc */ |
206 | size_t ssize; |
98 | |
207 | |
99 | /* cpu state */ |
208 | /* cpu state */ |
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209 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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210 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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211 | JMPENV *top_env; |
100 | coro_context cctx; |
212 | coro_context cctx; |
101 | JMPENV *top_env; |
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102 | } coro_stack; |
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103 | |
213 | |
104 | /* the (fake) coro_stack representing the main program */ |
214 | U32 gen; |
105 | static coro_stack *main_stack; |
215 | #if CORO_USE_VALGRIND |
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216 | int valgrind_id; |
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217 | #endif |
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218 | unsigned char flags; |
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219 | } coro_cctx; |
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220 | |
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221 | enum { |
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222 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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223 | CF_READY = 0x0002, /* coroutine is ready */ |
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224 | CF_NEW = 0x0004, /* has never been switched to */ |
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225 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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226 | }; |
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227 | |
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228 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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229 | typedef struct |
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230 | { |
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231 | SV *defsv; |
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232 | AV *defav; |
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233 | SV *errsv; |
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234 | SV *irsgv; |
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235 | #define VAR(name,type) type name; |
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236 | # include "state.h" |
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237 | #undef VAR |
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238 | } perl_slots; |
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239 | |
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240 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
106 | |
241 | |
107 | /* this is a structure representing a perl-level coroutine */ |
242 | /* this is a structure representing a perl-level coroutine */ |
108 | struct coro { |
243 | struct coro { |
109 | /* the c coroutine allocated to this perl coroutine, if any */ |
244 | /* the C coroutine allocated to this perl coroutine, if any */ |
110 | coro_stack *stack; |
245 | coro_cctx *cctx; |
111 | |
246 | |
112 | /* data associated with this coroutine (initial args) */ |
247 | /* process data */ |
113 | AV *args; |
248 | struct CoroSLF slf_frame; /* saved slf frame */ |
114 | int refcnt; |
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115 | |
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116 | /* optionally saved, might be zero */ |
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117 | AV *defav; |
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118 | SV *defsv; |
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119 | SV *errsv; |
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120 | |
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121 | /* saved global state not related to stacks */ |
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122 | U8 dowarn; |
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123 | I32 in_eval; |
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124 | |
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125 | /* the stacks and related info (callchain etc..) */ |
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126 | PERL_SI *curstackinfo; |
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127 | AV *curstack; |
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128 | AV *mainstack; |
249 | AV *mainstack; |
129 | SV **stack_sp; |
250 | perl_slots *slot; /* basically the saved sp */ |
130 | OP *op; |
251 | |
131 | SV **curpad; |
252 | AV *args; /* data associated with this coroutine (initial args) */ |
132 | AV *comppad; |
253 | int refcnt; /* coroutines are refcounted, yes */ |
133 | CV *compcv; |
254 | int flags; /* CF_ flags */ |
134 | SV **stack_base; |
255 | HV *hv; /* the perl hash associated with this coro, if any */ |
135 | SV **stack_max; |
256 | void (*on_destroy)(pTHX_ struct coro *coro); |
136 | SV **tmps_stack; |
257 | |
137 | I32 tmps_floor; |
258 | /* statistics */ |
138 | I32 tmps_ix; |
259 | int usecount; /* number of transfers to this coro */ |
139 | I32 tmps_max; |
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140 | I32 *markstack; |
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141 | I32 *markstack_ptr; |
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142 | I32 *markstack_max; |
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143 | I32 *scopestack; |
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144 | I32 scopestack_ix; |
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145 | I32 scopestack_max; |
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146 | ANY *savestack; |
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147 | I32 savestack_ix; |
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148 | I32 savestack_max; |
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149 | OP **retstack; |
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150 | I32 retstack_ix; |
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151 | I32 retstack_max; |
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152 | PMOP *curpm; |
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153 | COP *curcop; |
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154 | |
260 | |
155 | /* coro process data */ |
261 | /* coro process data */ |
156 | int prio; |
262 | int prio; |
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263 | SV *throw; /* exception to be thrown */ |
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264 | |
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265 | /* async_pool */ |
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266 | SV *saved_deffh; |
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267 | |
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268 | /* linked list */ |
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269 | struct coro *next, *prev; |
157 | }; |
270 | }; |
158 | |
271 | |
159 | typedef struct coro *Coro__State; |
272 | typedef struct coro *Coro__State; |
160 | typedef struct coro *Coro__State_or_hashref; |
273 | typedef struct coro *Coro__State_or_hashref; |
161 | |
274 | |
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275 | static struct CoroSLF slf_frame; /* the current slf frame */ |
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276 | |
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277 | /** Coro ********************************************************************/ |
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278 | |
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279 | #define PRIO_MAX 3 |
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280 | #define PRIO_HIGH 1 |
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281 | #define PRIO_NORMAL 0 |
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282 | #define PRIO_LOW -1 |
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283 | #define PRIO_IDLE -3 |
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284 | #define PRIO_MIN -4 |
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285 | |
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286 | /* for Coro.pm */ |
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287 | static SV *coro_current; |
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288 | static SV *coro_readyhook; |
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289 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
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290 | static struct coro *coro_first; |
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291 | #define coro_nready coroapi.nready |
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292 | |
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293 | /** lowlevel stuff **********************************************************/ |
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294 | |
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295 | static SV * |
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296 | coro_get_sv (pTHX_ const char *name, int create) |
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297 | { |
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298 | #if PERL_VERSION_ATLEAST (5,10,0) |
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299 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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300 | get_sv (name, create); |
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301 | #endif |
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302 | return get_sv (name, create); |
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303 | } |
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304 | |
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305 | static AV * |
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306 | coro_get_av (pTHX_ const char *name, int create) |
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307 | { |
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308 | #if PERL_VERSION_ATLEAST (5,10,0) |
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309 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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310 | get_av (name, create); |
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311 | #endif |
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312 | return get_av (name, create); |
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313 | } |
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314 | |
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315 | static HV * |
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316 | coro_get_hv (pTHX_ const char *name, int create) |
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317 | { |
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318 | #if PERL_VERSION_ATLEAST (5,10,0) |
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319 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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320 | get_hv (name, create); |
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321 | #endif |
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322 | return get_hv (name, create); |
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323 | } |
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324 | |
162 | static AV * |
325 | static AV * |
163 | coro_clone_padlist (pTHX_ CV *cv) |
326 | coro_clone_padlist (pTHX_ CV *cv) |
164 | { |
327 | { |
165 | AV *padlist = CvPADLIST (cv); |
328 | AV *padlist = CvPADLIST (cv); |
166 | AV *newpadlist, *newpad; |
329 | AV *newpadlist, *newpad; |
167 | |
330 | |
168 | newpadlist = newAV (); |
331 | newpadlist = newAV (); |
169 | AvREAL_off (newpadlist); |
332 | AvREAL_off (newpadlist); |
170 | #if PERL_VERSION < 9 |
333 | #if PERL_VERSION_ATLEAST (5,10,0) |
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334 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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335 | #else |
171 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
336 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
172 | #else |
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173 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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174 | #endif |
337 | #endif |
175 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
338 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
176 | --AvFILLp (padlist); |
339 | --AvFILLp (padlist); |
177 | |
340 | |
178 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
341 | av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
179 | av_store (newpadlist, 1, (SV *)newpad); |
342 | av_store (newpadlist, 1, (SV *)newpad); |
180 | |
343 | |
181 | return newpadlist; |
344 | return newpadlist; |
182 | } |
345 | } |
183 | |
346 | |
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213 | |
376 | |
214 | /* casting is fun. */ |
377 | /* casting is fun. */ |
215 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
378 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
216 | free_padlist (aTHX_ padlist); |
379 | free_padlist (aTHX_ padlist); |
217 | |
380 | |
218 | SvREFCNT_dec (av); |
381 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
219 | |
382 | |
220 | return 0; |
383 | return 0; |
221 | } |
384 | } |
222 | |
385 | |
223 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
386 | #define CORO_MAGIC_type_cv PERL_MAGIC_ext |
|
|
387 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
224 | |
388 | |
225 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
389 | static MGVTBL coro_cv_vtbl = { |
|
|
390 | 0, 0, 0, 0, |
|
|
391 | coro_cv_free |
|
|
392 | }; |
|
|
393 | |
|
|
394 | #define CORO_MAGIC(sv, type) \ |
|
|
395 | expect_true (SvMAGIC (sv)) \ |
|
|
396 | ? expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
397 | ? SvMAGIC (sv) \ |
|
|
398 | : mg_find (sv, type) \ |
|
|
399 | : 0 |
|
|
400 | |
|
|
401 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
402 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
403 | |
|
|
404 | INLINE struct coro * |
|
|
405 | SvSTATE_ (pTHX_ SV *coro) |
|
|
406 | { |
|
|
407 | HV *stash; |
|
|
408 | MAGIC *mg; |
|
|
409 | |
|
|
410 | if (SvROK (coro)) |
|
|
411 | coro = SvRV (coro); |
|
|
412 | |
|
|
413 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
414 | croak ("Coro::State object required"); |
|
|
415 | |
|
|
416 | stash = SvSTASH (coro); |
|
|
417 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
418 | { |
|
|
419 | /* very slow, but rare, check */ |
|
|
420 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
421 | croak ("Coro::State object required"); |
|
|
422 | } |
|
|
423 | |
|
|
424 | mg = CORO_MAGIC_state (coro); |
|
|
425 | return (struct coro *)mg->mg_ptr; |
|
|
426 | } |
|
|
427 | |
|
|
428 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
429 | |
|
|
430 | /* fastert than SvSTATE, but expects a coroutine hv */ |
|
|
431 | INLINE struct coro * |
|
|
432 | SvSTATE_hv (SV *sv) |
|
|
433 | { |
|
|
434 | MAGIC *mg = expect_true (SvMAGIC (sv)->mg_type == CORO_MAGIC_type_state) |
|
|
435 | ? SvMAGIC (sv) |
|
|
436 | : mg_find (sv, CORO_MAGIC_type_state); |
|
|
437 | |
|
|
438 | return (struct coro *)mg->mg_ptr; |
|
|
439 | } |
|
|
440 | |
|
|
441 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
226 | |
442 | |
227 | /* the next two functions merely cache the padlists */ |
443 | /* the next two functions merely cache the padlists */ |
228 | static void |
444 | static void |
229 | get_padlist (pTHX_ CV *cv) |
445 | get_padlist (pTHX_ CV *cv) |
230 | { |
446 | { |
231 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
447 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
448 | AV *av; |
232 | |
449 | |
233 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
450 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
234 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
451 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
235 | else |
452 | else |
236 | { |
453 | { |
237 | #if 0 |
454 | #if CORO_PREFER_PERL_FUNCTIONS |
238 | /* this should work - but it doesn't :( */ |
455 | /* this is probably cleaner? but also slower! */ |
|
|
456 | /* in practise, it seems to be less stable */ |
239 | CV *cp = Perl_cv_clone (aTHX_ cv); |
457 | CV *cp = Perl_cv_clone (cv); |
240 | CvPADLIST (cv) = CvPADLIST (cp); |
458 | CvPADLIST (cv) = CvPADLIST (cp); |
241 | CvPADLIST (cp) = 0; |
459 | CvPADLIST (cp) = 0; |
242 | SvREFCNT_dec (cp); |
460 | SvREFCNT_dec (cp); |
243 | #else |
461 | #else |
244 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
462 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
… | |
… | |
247 | } |
465 | } |
248 | |
466 | |
249 | static void |
467 | static void |
250 | put_padlist (pTHX_ CV *cv) |
468 | put_padlist (pTHX_ CV *cv) |
251 | { |
469 | { |
252 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
470 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
471 | AV *av; |
253 | |
472 | |
254 | if (!mg) |
473 | if (expect_false (!mg)) |
255 | { |
474 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
256 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
|
|
257 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
258 | mg->mg_virtual = &vtbl_coro; |
|
|
259 | mg->mg_obj = (SV *)newAV (); |
|
|
260 | } |
|
|
261 | |
475 | |
262 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
476 | av = (AV *)mg->mg_obj; |
263 | } |
|
|
264 | |
477 | |
265 | #define SB do { |
478 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
266 | #define SE } while (0) |
479 | av_extend (av, AvMAX (av) + 1); |
267 | |
480 | |
268 | #define LOAD(state) load_state(aTHX_ (state)); |
481 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
269 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
482 | } |
270 | |
483 | |
271 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
484 | /** load & save, init *******************************************************/ |
272 | |
485 | |
273 | static void |
486 | static void |
274 | load_state(pTHX_ Coro__State c) |
487 | load_perl (pTHX_ Coro__State c) |
275 | { |
488 | { |
276 | PL_dowarn = c->dowarn; |
489 | perl_slots *slot = c->slot; |
277 | PL_in_eval = c->in_eval; |
490 | c->slot = 0; |
278 | |
491 | |
279 | PL_curstackinfo = c->curstackinfo; |
|
|
280 | PL_curstack = c->curstack; |
|
|
281 | PL_mainstack = c->mainstack; |
492 | PL_mainstack = c->mainstack; |
282 | PL_stack_sp = c->stack_sp; |
|
|
283 | PL_op = c->op; |
|
|
284 | PL_curpad = c->curpad; |
|
|
285 | PL_comppad = c->comppad; |
|
|
286 | PL_compcv = c->compcv; |
|
|
287 | PL_stack_base = c->stack_base; |
|
|
288 | PL_stack_max = c->stack_max; |
|
|
289 | PL_tmps_stack = c->tmps_stack; |
|
|
290 | PL_tmps_floor = c->tmps_floor; |
|
|
291 | PL_tmps_ix = c->tmps_ix; |
|
|
292 | PL_tmps_max = c->tmps_max; |
|
|
293 | PL_markstack = c->markstack; |
|
|
294 | PL_markstack_ptr = c->markstack_ptr; |
|
|
295 | PL_markstack_max = c->markstack_max; |
|
|
296 | PL_scopestack = c->scopestack; |
|
|
297 | PL_scopestack_ix = c->scopestack_ix; |
|
|
298 | PL_scopestack_max = c->scopestack_max; |
|
|
299 | PL_savestack = c->savestack; |
|
|
300 | PL_savestack_ix = c->savestack_ix; |
|
|
301 | PL_savestack_max = c->savestack_max; |
|
|
302 | #if PERL_VERSION < 9 |
|
|
303 | PL_retstack = c->retstack; |
|
|
304 | PL_retstack_ix = c->retstack_ix; |
|
|
305 | PL_retstack_max = c->retstack_max; |
|
|
306 | #endif |
|
|
307 | PL_curpm = c->curpm; |
|
|
308 | PL_curcop = c->curcop; |
|
|
309 | |
493 | |
310 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
494 | GvSV (PL_defgv) = slot->defsv; |
311 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
495 | GvAV (PL_defgv) = slot->defav; |
312 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
496 | GvSV (PL_errgv) = slot->errsv; |
|
|
497 | GvSV (irsgv) = slot->irsgv; |
|
|
498 | |
|
|
499 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
500 | # include "state.h" |
|
|
501 | #undef VAR |
313 | |
502 | |
314 | { |
503 | { |
315 | dSP; |
504 | dSP; |
|
|
505 | |
316 | CV *cv; |
506 | CV *cv; |
317 | |
507 | |
318 | /* now do the ugly restore mess */ |
508 | /* now do the ugly restore mess */ |
319 | while ((cv = (CV *)POPs)) |
509 | while (expect_true (cv = (CV *)POPs)) |
320 | { |
510 | { |
321 | AV *padlist = (AV *)POPs; |
|
|
322 | |
|
|
323 | if (padlist) |
|
|
324 | { |
|
|
325 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
511 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
326 | CvPADLIST(cv) = padlist; |
512 | CvDEPTH (cv) = PTR2IV (POPs); |
327 | } |
513 | CvPADLIST (cv) = (AV *)POPs; |
328 | |
|
|
329 | ++CvDEPTH(cv); |
|
|
330 | } |
514 | } |
331 | |
515 | |
332 | PUTBACK; |
516 | PUTBACK; |
333 | } |
517 | } |
334 | } |
|
|
335 | |
518 | |
|
|
519 | slf_frame = c->slf_frame; |
|
|
520 | } |
|
|
521 | |
336 | static void |
522 | static void |
337 | save_state(pTHX_ Coro__State c, int flags) |
523 | save_perl (pTHX_ Coro__State c) |
338 | { |
524 | { |
|
|
525 | c->slf_frame = slf_frame; |
|
|
526 | |
339 | { |
527 | { |
340 | dSP; |
528 | dSP; |
341 | I32 cxix = cxstack_ix; |
529 | I32 cxix = cxstack_ix; |
342 | PERL_CONTEXT *ccstk = cxstack; |
530 | PERL_CONTEXT *ccstk = cxstack; |
343 | PERL_SI *top_si = PL_curstackinfo; |
531 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
345 | /* |
533 | /* |
346 | * the worst thing you can imagine happens first - we have to save |
534 | * the worst thing you can imagine happens first - we have to save |
347 | * (and reinitialize) all cv's in the whole callchain :( |
535 | * (and reinitialize) all cv's in the whole callchain :( |
348 | */ |
536 | */ |
349 | |
537 | |
350 | PUSHs (Nullsv); |
538 | XPUSHs (Nullsv); |
351 | /* this loop was inspired by pp_caller */ |
539 | /* this loop was inspired by pp_caller */ |
352 | for (;;) |
540 | for (;;) |
353 | { |
541 | { |
354 | while (cxix >= 0) |
542 | while (expect_true (cxix >= 0)) |
355 | { |
543 | { |
356 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
544 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
357 | |
545 | |
358 | if (CxTYPE(cx) == CXt_SUB) |
546 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
359 | { |
547 | { |
360 | CV *cv = cx->blk_sub.cv; |
548 | CV *cv = cx->blk_sub.cv; |
|
|
549 | |
361 | if (CvDEPTH(cv)) |
550 | if (expect_true (CvDEPTH (cv))) |
362 | { |
551 | { |
363 | EXTEND (SP, CvDEPTH(cv)*2); |
552 | EXTEND (SP, 3); |
364 | |
|
|
365 | while (--CvDEPTH(cv)) |
|
|
366 | { |
|
|
367 | /* this tells the restore code to increment CvDEPTH */ |
|
|
368 | PUSHs (Nullsv); |
|
|
369 | PUSHs ((SV *)cv); |
|
|
370 | } |
|
|
371 | |
|
|
372 | PUSHs ((SV *)CvPADLIST(cv)); |
553 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
554 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
373 | PUSHs ((SV *)cv); |
555 | PUSHs ((SV *)cv); |
374 | |
556 | |
|
|
557 | CvDEPTH (cv) = 0; |
375 | get_padlist (aTHX_ cv); |
558 | get_padlist (aTHX_ cv); |
376 | } |
559 | } |
377 | } |
560 | } |
378 | #ifdef CXt_FORMAT |
|
|
379 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
380 | { |
|
|
381 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
382 | /* my bold guess is as a simple, plain sub... */ |
|
|
383 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
384 | } |
|
|
385 | #endif |
|
|
386 | } |
561 | } |
387 | |
562 | |
388 | if (top_si->si_type == PERLSI_MAIN) |
563 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
389 | break; |
564 | break; |
390 | |
565 | |
391 | top_si = top_si->si_prev; |
566 | top_si = top_si->si_prev; |
392 | ccstk = top_si->si_cxstack; |
567 | ccstk = top_si->si_cxstack; |
393 | cxix = top_si->si_cxix; |
568 | cxix = top_si->si_cxix; |
394 | } |
569 | } |
395 | |
570 | |
396 | PUTBACK; |
571 | PUTBACK; |
397 | } |
572 | } |
398 | |
573 | |
399 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
574 | /* allocate some space on the context stack for our purposes */ |
400 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
575 | /* we manually unroll here, as usually 2 slots is enough */ |
401 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
576 | if (SLOT_COUNT >= 1) CXINC; |
|
|
577 | if (SLOT_COUNT >= 2) CXINC; |
|
|
578 | if (SLOT_COUNT >= 3) CXINC; |
|
|
579 | { |
|
|
580 | int i; |
|
|
581 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
582 | CXINC; |
|
|
583 | } |
|
|
584 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
402 | |
585 | |
403 | c->dowarn = PL_dowarn; |
|
|
404 | c->in_eval = PL_in_eval; |
|
|
405 | |
|
|
406 | c->curstackinfo = PL_curstackinfo; |
|
|
407 | c->curstack = PL_curstack; |
|
|
408 | c->mainstack = PL_mainstack; |
586 | c->mainstack = PL_mainstack; |
409 | c->stack_sp = PL_stack_sp; |
587 | |
410 | c->op = PL_op; |
588 | { |
411 | c->curpad = PL_curpad; |
589 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
412 | c->comppad = PL_comppad; |
590 | |
413 | c->compcv = PL_compcv; |
591 | slot->defav = GvAV (PL_defgv); |
414 | c->stack_base = PL_stack_base; |
592 | slot->defsv = DEFSV; |
415 | c->stack_max = PL_stack_max; |
593 | slot->errsv = ERRSV; |
416 | c->tmps_stack = PL_tmps_stack; |
594 | slot->irsgv = GvSV (irsgv); |
417 | c->tmps_floor = PL_tmps_floor; |
595 | |
418 | c->tmps_ix = PL_tmps_ix; |
596 | #define VAR(name,type) slot->name = PL_ ## name; |
419 | c->tmps_max = PL_tmps_max; |
597 | # include "state.h" |
420 | c->markstack = PL_markstack; |
598 | #undef VAR |
421 | c->markstack_ptr = PL_markstack_ptr; |
599 | } |
422 | c->markstack_max = PL_markstack_max; |
|
|
423 | c->scopestack = PL_scopestack; |
|
|
424 | c->scopestack_ix = PL_scopestack_ix; |
|
|
425 | c->scopestack_max = PL_scopestack_max; |
|
|
426 | c->savestack = PL_savestack; |
|
|
427 | c->savestack_ix = PL_savestack_ix; |
|
|
428 | c->savestack_max = PL_savestack_max; |
|
|
429 | #if PERL_VERSION < 9 |
|
|
430 | c->retstack = PL_retstack; |
|
|
431 | c->retstack_ix = PL_retstack_ix; |
|
|
432 | c->retstack_max = PL_retstack_max; |
|
|
433 | #endif |
|
|
434 | c->curpm = PL_curpm; |
|
|
435 | c->curcop = PL_curcop; |
|
|
436 | } |
600 | } |
437 | |
601 | |
438 | /* |
602 | /* |
439 | * allocate various perl stacks. This is an exact copy |
603 | * allocate various perl stacks. This is almost an exact copy |
440 | * of perl.c:init_stacks, except that it uses less memory |
604 | * of perl.c:init_stacks, except that it uses less memory |
441 | * on the (sometimes correct) assumption that coroutines do |
605 | * on the (sometimes correct) assumption that coroutines do |
442 | * not usually need a lot of stackspace. |
606 | * not usually need a lot of stackspace. |
443 | */ |
607 | */ |
|
|
608 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
609 | # define coro_init_stacks init_stacks |
|
|
610 | #else |
444 | static void |
611 | static void |
445 | coro_init_stacks (pTHX) |
612 | coro_init_stacks (pTHX) |
446 | { |
613 | { |
447 | LOCK; |
614 | 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; |
615 | PL_curstackinfo->si_type = PERLSI_MAIN; |
451 | PL_curstack = PL_curstackinfo->si_stack; |
616 | PL_curstack = PL_curstackinfo->si_stack; |
452 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
617 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
453 | |
618 | |
454 | PL_stack_base = AvARRAY(PL_curstack); |
619 | PL_stack_base = AvARRAY(PL_curstack); |
455 | PL_stack_sp = PL_stack_base; |
620 | PL_stack_sp = PL_stack_base; |
456 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
621 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
457 | |
622 | |
458 | New(50,PL_tmps_stack,96,SV*); |
623 | New(50,PL_tmps_stack,32,SV*); |
459 | PL_tmps_floor = -1; |
624 | PL_tmps_floor = -1; |
460 | PL_tmps_ix = -1; |
625 | PL_tmps_ix = -1; |
461 | PL_tmps_max = 96; |
626 | PL_tmps_max = 32; |
462 | |
627 | |
463 | New(54,PL_markstack,16,I32); |
628 | New(54,PL_markstack,16,I32); |
464 | PL_markstack_ptr = PL_markstack; |
629 | PL_markstack_ptr = PL_markstack; |
465 | PL_markstack_max = PL_markstack + 16; |
630 | PL_markstack_max = PL_markstack + 16; |
466 | |
631 | |
467 | #ifdef SET_MARK_OFFSET |
632 | #ifdef SET_MARK_OFFSET |
468 | SET_MARK_OFFSET; |
633 | SET_MARK_OFFSET; |
469 | #endif |
634 | #endif |
470 | |
635 | |
471 | New(54,PL_scopestack,16,I32); |
636 | New(54,PL_scopestack,8,I32); |
472 | PL_scopestack_ix = 0; |
637 | PL_scopestack_ix = 0; |
473 | PL_scopestack_max = 16; |
638 | PL_scopestack_max = 8; |
474 | |
639 | |
475 | New(54,PL_savestack,96,ANY); |
640 | New(54,PL_savestack,24,ANY); |
476 | PL_savestack_ix = 0; |
641 | PL_savestack_ix = 0; |
477 | PL_savestack_max = 96; |
642 | PL_savestack_max = 24; |
478 | |
643 | |
479 | #if PERL_VERSION < 9 |
644 | #if !PERL_VERSION_ATLEAST (5,10,0) |
480 | New(54,PL_retstack,8,OP*); |
645 | New(54,PL_retstack,4,OP*); |
481 | PL_retstack_ix = 0; |
646 | PL_retstack_ix = 0; |
482 | PL_retstack_max = 8; |
647 | PL_retstack_max = 4; |
483 | #endif |
648 | #endif |
484 | |
|
|
485 | UNLOCK; |
|
|
486 | } |
649 | } |
|
|
650 | #endif |
487 | |
651 | |
488 | /* |
652 | /* |
489 | * destroy the stacks, the callchain etc... |
653 | * destroy the stacks, the callchain etc... |
490 | */ |
654 | */ |
491 | static void |
655 | static void |
492 | destroy_stacks(pTHX) |
656 | coro_destruct_stacks (pTHX) |
493 | { |
657 | { |
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) |
658 | while (PL_curstackinfo->si_next) |
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
659 | PL_curstackinfo = PL_curstackinfo->si_next; |
507 | |
660 | |
508 | while (PL_curstackinfo) |
661 | while (PL_curstackinfo) |
509 | { |
662 | { |
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
663 | PERL_SI *p = PL_curstackinfo->si_prev; |
511 | |
664 | |
512 | { /*D*//*remove*/ |
|
|
513 | dSP; |
|
|
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
515 | PUTBACK; /* possibly superfluous */ |
|
|
516 | } |
|
|
517 | |
|
|
518 | if (!IN_DESTRUCT) |
665 | if (!IN_DESTRUCT) |
519 | { |
|
|
520 | dounwind (-1);/*D*//*remove*/ |
|
|
521 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
666 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
522 | } |
|
|
523 | |
667 | |
524 | Safefree (PL_curstackinfo->si_cxstack); |
668 | Safefree (PL_curstackinfo->si_cxstack); |
525 | Safefree (PL_curstackinfo); |
669 | Safefree (PL_curstackinfo); |
526 | PL_curstackinfo = p; |
670 | PL_curstackinfo = p; |
527 | } |
671 | } |
528 | |
672 | |
529 | Safefree (PL_tmps_stack); |
673 | Safefree (PL_tmps_stack); |
530 | Safefree (PL_markstack); |
674 | Safefree (PL_markstack); |
531 | Safefree (PL_scopestack); |
675 | Safefree (PL_scopestack); |
532 | Safefree (PL_savestack); |
676 | Safefree (PL_savestack); |
533 | #if PERL_VERSION < 9 |
677 | #if !PERL_VERSION_ATLEAST (5,10,0) |
534 | Safefree (PL_retstack); |
678 | Safefree (PL_retstack); |
535 | #endif |
679 | #endif |
536 | } |
680 | } |
537 | |
681 | |
|
|
682 | static size_t |
|
|
683 | coro_rss (pTHX_ struct coro *coro) |
|
|
684 | { |
|
|
685 | size_t rss = sizeof (*coro); |
|
|
686 | |
|
|
687 | if (coro->mainstack) |
|
|
688 | { |
|
|
689 | perl_slots tmp_slot; |
|
|
690 | perl_slots *slot; |
|
|
691 | |
|
|
692 | if (coro->flags & CF_RUNNING) |
|
|
693 | { |
|
|
694 | slot = &tmp_slot; |
|
|
695 | |
|
|
696 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
697 | # include "state.h" |
|
|
698 | #undef VAR |
|
|
699 | } |
|
|
700 | else |
|
|
701 | slot = coro->slot; |
|
|
702 | |
|
|
703 | if (slot) |
|
|
704 | { |
|
|
705 | rss += sizeof (slot->curstackinfo); |
|
|
706 | rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
|
|
707 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
|
|
708 | rss += slot->tmps_max * sizeof (SV *); |
|
|
709 | rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
|
|
710 | rss += slot->scopestack_max * sizeof (I32); |
|
|
711 | rss += slot->savestack_max * sizeof (ANY); |
|
|
712 | |
|
|
713 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
714 | rss += slot->retstack_max * sizeof (OP *); |
|
|
715 | #endif |
|
|
716 | } |
|
|
717 | } |
|
|
718 | |
|
|
719 | return rss; |
|
|
720 | } |
|
|
721 | |
|
|
722 | /** coroutine stack handling ************************************************/ |
|
|
723 | |
|
|
724 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
725 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
726 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
727 | |
|
|
728 | /* apparently < 5.8.8 */ |
|
|
729 | #ifndef MgPV_nolen_const |
|
|
730 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
731 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
732 | (const char*)(mg)->mg_ptr) |
|
|
733 | #endif |
|
|
734 | |
|
|
735 | /* |
|
|
736 | * This overrides the default magic get method of %SIG elements. |
|
|
737 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
738 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
739 | * readback here. |
|
|
740 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
741 | * not expecting this to actually change the hook. This is a potential problem |
|
|
742 | * when a schedule happens then, but we ignore this. |
|
|
743 | */ |
538 | static void |
744 | static int |
539 | setup_coro (struct coro *coro) |
745 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
746 | { |
|
|
747 | const char *s = MgPV_nolen_const (mg); |
|
|
748 | |
|
|
749 | if (*s == '_') |
|
|
750 | { |
|
|
751 | SV **svp = 0; |
|
|
752 | |
|
|
753 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
754 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
755 | |
|
|
756 | if (svp) |
|
|
757 | { |
|
|
758 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
759 | return 0; |
|
|
760 | } |
|
|
761 | } |
|
|
762 | |
|
|
763 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
764 | } |
|
|
765 | |
|
|
766 | static int |
|
|
767 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
768 | { |
|
|
769 | const char *s = MgPV_nolen_const (mg); |
|
|
770 | |
|
|
771 | if (*s == '_') |
|
|
772 | { |
|
|
773 | SV **svp = 0; |
|
|
774 | |
|
|
775 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
776 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
777 | |
|
|
778 | if (svp) |
|
|
779 | { |
|
|
780 | SV *old = *svp; |
|
|
781 | *svp = 0; |
|
|
782 | SvREFCNT_dec (old); |
|
|
783 | return 0; |
|
|
784 | } |
|
|
785 | } |
|
|
786 | |
|
|
787 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
788 | } |
|
|
789 | |
|
|
790 | static int |
|
|
791 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
792 | { |
|
|
793 | const char *s = MgPV_nolen_const (mg); |
|
|
794 | |
|
|
795 | if (*s == '_') |
|
|
796 | { |
|
|
797 | SV **svp = 0; |
|
|
798 | |
|
|
799 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
800 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
801 | |
|
|
802 | if (svp) |
|
|
803 | { |
|
|
804 | SV *old = *svp; |
|
|
805 | *svp = newSVsv (sv); |
|
|
806 | SvREFCNT_dec (old); |
|
|
807 | return 0; |
|
|
808 | } |
|
|
809 | } |
|
|
810 | |
|
|
811 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
812 | } |
|
|
813 | |
|
|
814 | static void |
|
|
815 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
816 | { |
|
|
817 | /* kind of mega-hacky, but works */ |
|
|
818 | ta->next = ta->prev = (struct coro *)ta; |
|
|
819 | } |
|
|
820 | |
|
|
821 | static int |
|
|
822 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
823 | { |
|
|
824 | return 0; |
|
|
825 | } |
|
|
826 | |
|
|
827 | static void |
|
|
828 | coro_setup (pTHX_ struct coro *coro) |
540 | { |
829 | { |
541 | /* |
830 | /* |
542 | * emulate part of the perl startup here. |
831 | * emulate part of the perl startup here. |
543 | */ |
832 | */ |
544 | dTHX; |
833 | coro_init_stacks (aTHX); |
|
|
834 | |
|
|
835 | PL_runops = RUNOPS_DEFAULT; |
|
|
836 | PL_curcop = &PL_compiling; |
|
|
837 | PL_in_eval = EVAL_NULL; |
|
|
838 | PL_comppad = 0; |
|
|
839 | PL_curpm = 0; |
|
|
840 | PL_curpad = 0; |
|
|
841 | PL_localizing = 0; |
|
|
842 | PL_dirty = 0; |
|
|
843 | PL_restartop = 0; |
|
|
844 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
845 | PL_parser = 0; |
|
|
846 | #endif |
|
|
847 | |
|
|
848 | /* recreate the die/warn hooks */ |
|
|
849 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
850 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
851 | |
|
|
852 | GvSV (PL_defgv) = newSV (0); |
|
|
853 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
854 | GvSV (PL_errgv) = newSV (0); |
|
|
855 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
856 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
857 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
858 | |
|
|
859 | { |
|
|
860 | dSP; |
|
|
861 | UNOP myop; |
|
|
862 | |
|
|
863 | Zero (&myop, 1, UNOP); |
|
|
864 | myop.op_next = Nullop; |
|
|
865 | myop.op_flags = OPf_WANT_VOID; |
|
|
866 | |
|
|
867 | PUSHMARK (SP); |
|
|
868 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
|
|
869 | PUTBACK; |
|
|
870 | PL_op = (OP *)&myop; |
|
|
871 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
872 | SPAGAIN; |
|
|
873 | } |
|
|
874 | |
|
|
875 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
876 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
877 | */ |
|
|
878 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
879 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
880 | } |
|
|
881 | |
|
|
882 | static void |
|
|
883 | coro_destruct (pTHX_ struct coro *coro) |
|
|
884 | { |
|
|
885 | if (!IN_DESTRUCT) |
|
|
886 | { |
|
|
887 | /* restore all saved variables and stuff */ |
|
|
888 | LEAVE_SCOPE (0); |
|
|
889 | assert (PL_tmps_floor == -1); |
|
|
890 | |
|
|
891 | /* free all temporaries */ |
|
|
892 | FREETMPS; |
|
|
893 | assert (PL_tmps_ix == -1); |
|
|
894 | |
|
|
895 | /* unwind all extra stacks */ |
|
|
896 | POPSTACK_TO (PL_mainstack); |
|
|
897 | |
|
|
898 | /* unwind main stack */ |
|
|
899 | dounwind (-1); |
|
|
900 | } |
|
|
901 | |
|
|
902 | SvREFCNT_dec (GvSV (PL_defgv)); |
|
|
903 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
904 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
905 | SvREFCNT_dec (PL_defoutgv); |
|
|
906 | SvREFCNT_dec (PL_rs); |
|
|
907 | SvREFCNT_dec (GvSV (irsgv)); |
|
|
908 | |
|
|
909 | SvREFCNT_dec (PL_diehook); |
|
|
910 | SvREFCNT_dec (PL_warnhook); |
|
|
911 | |
|
|
912 | SvREFCNT_dec (coro->saved_deffh); |
|
|
913 | SvREFCNT_dec (coro->throw); |
|
|
914 | |
|
|
915 | coro_destruct_stacks (aTHX); |
|
|
916 | } |
|
|
917 | |
|
|
918 | INLINE void |
|
|
919 | free_coro_mortal (pTHX) |
|
|
920 | { |
|
|
921 | if (expect_true (coro_mortal)) |
|
|
922 | { |
|
|
923 | SvREFCNT_dec (coro_mortal); |
|
|
924 | coro_mortal = 0; |
|
|
925 | } |
|
|
926 | } |
|
|
927 | |
|
|
928 | static int |
|
|
929 | runops_trace (pTHX) |
|
|
930 | { |
|
|
931 | COP *oldcop = 0; |
|
|
932 | int oldcxix = -2; |
|
|
933 | struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */ |
|
|
934 | coro_cctx *cctx = coro->cctx; |
|
|
935 | |
|
|
936 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
937 | { |
|
|
938 | PERL_ASYNC_CHECK (); |
|
|
939 | |
|
|
940 | if (cctx->flags & CC_TRACE_ALL) |
|
|
941 | { |
|
|
942 | if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
|
|
943 | { |
|
|
944 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
945 | SV **bot, **top; |
|
|
946 | AV *av = newAV (); /* return values */ |
|
|
947 | SV **cb; |
|
|
948 | dSP; |
|
|
949 | |
|
|
950 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
951 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
952 | if (isGV (gv)) |
|
|
953 | gv_efullname3 (fullname, gv, 0); |
|
|
954 | |
|
|
955 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
956 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
957 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
958 | : bot; |
|
|
959 | |
|
|
960 | av_extend (av, top - bot); |
|
|
961 | while (bot < top) |
|
|
962 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
963 | |
|
|
964 | PL_runops = RUNOPS_DEFAULT; |
|
|
965 | ENTER; |
|
|
966 | SAVETMPS; |
|
|
967 | EXTEND (SP, 3); |
|
|
968 | PUSHMARK (SP); |
|
|
969 | PUSHs (&PL_sv_no); |
|
|
970 | PUSHs (fullname); |
|
|
971 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
972 | PUTBACK; |
|
|
973 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
974 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
975 | SPAGAIN; |
|
|
976 | FREETMPS; |
|
|
977 | LEAVE; |
|
|
978 | PL_runops = runops_trace; |
|
|
979 | } |
|
|
980 | |
|
|
981 | if (oldcop != PL_curcop) |
|
|
982 | { |
|
|
983 | oldcop = PL_curcop; |
|
|
984 | |
|
|
985 | if (PL_curcop != &PL_compiling) |
|
|
986 | { |
|
|
987 | SV **cb; |
|
|
988 | |
|
|
989 | if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
|
|
990 | { |
|
|
991 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
992 | |
|
|
993 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
994 | { |
|
|
995 | runops_proc_t old_runops = PL_runops; |
|
|
996 | dSP; |
|
|
997 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
998 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
999 | |
|
|
1000 | if (isGV (gv)) |
|
|
1001 | gv_efullname3 (fullname, gv, 0); |
|
|
1002 | |
|
|
1003 | PL_runops = RUNOPS_DEFAULT; |
|
|
1004 | ENTER; |
|
|
1005 | SAVETMPS; |
|
|
1006 | EXTEND (SP, 3); |
|
|
1007 | PUSHMARK (SP); |
|
|
1008 | PUSHs (&PL_sv_yes); |
|
|
1009 | PUSHs (fullname); |
|
|
1010 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1011 | PUTBACK; |
|
|
1012 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1013 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1014 | SPAGAIN; |
|
|
1015 | FREETMPS; |
|
|
1016 | LEAVE; |
|
|
1017 | PL_runops = runops_trace; |
|
|
1018 | } |
|
|
1019 | |
|
|
1020 | oldcxix = cxstack_ix; |
|
|
1021 | } |
|
|
1022 | |
|
|
1023 | if (cctx->flags & CC_TRACE_LINE) |
|
|
1024 | { |
|
|
1025 | dSP; |
|
|
1026 | |
|
|
1027 | PL_runops = RUNOPS_DEFAULT; |
|
|
1028 | ENTER; |
|
|
1029 | SAVETMPS; |
|
|
1030 | EXTEND (SP, 3); |
|
|
1031 | PL_runops = RUNOPS_DEFAULT; |
|
|
1032 | PUSHMARK (SP); |
|
|
1033 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1034 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1035 | PUTBACK; |
|
|
1036 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1037 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1038 | SPAGAIN; |
|
|
1039 | FREETMPS; |
|
|
1040 | LEAVE; |
|
|
1041 | PL_runops = runops_trace; |
|
|
1042 | } |
|
|
1043 | } |
|
|
1044 | } |
|
|
1045 | } |
|
|
1046 | } |
|
|
1047 | |
|
|
1048 | TAINT_NOT; |
|
|
1049 | return 0; |
|
|
1050 | } |
|
|
1051 | |
|
|
1052 | static void |
|
|
1053 | prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) |
|
|
1054 | { |
|
|
1055 | ta->prev = (struct coro *)cctx; |
|
|
1056 | ta->next = 0; |
|
|
1057 | } |
|
|
1058 | |
|
|
1059 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
1060 | /* _cctx_init should be careful, as it could be called at almost any time */ |
|
|
1061 | /* during execution of a perl program */ |
|
|
1062 | /* also initialises PL_top_env */ |
|
|
1063 | static void NOINLINE |
|
|
1064 | cctx_prepare (pTHX_ coro_cctx *cctx) |
|
|
1065 | { |
545 | dSP; |
1066 | dSP; |
546 | UNOP myop; |
1067 | UNOP myop; |
547 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
|
|
548 | |
1068 | |
549 | coro_init_stacks (aTHX); |
1069 | PL_top_env = &PL_start_env; |
550 | /*PL_curcop = 0;*/ |
|
|
551 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
552 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
553 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
554 | |
1070 | |
555 | SPAGAIN; |
1071 | if (cctx->flags & CC_TRACE) |
|
|
1072 | PL_runops = runops_trace; |
556 | |
1073 | |
557 | Zero (&myop, 1, UNOP); |
1074 | Zero (&myop, 1, UNOP); |
558 | myop.op_next = Nullop; |
1075 | myop.op_next = PL_op; |
559 | myop.op_flags = OPf_WANT_VOID; |
1076 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
560 | |
1077 | |
|
|
1078 | PUSHMARK (SP); |
|
|
1079 | EXTEND (SP, 2); |
|
|
1080 | PUSHs (sv_2mortal (newSViv ((IV)cctx))); |
|
|
1081 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
1082 | PUTBACK; |
561 | PL_op = (OP *)&myop; |
1083 | PL_op = (OP *)&myop; |
562 | |
|
|
563 | PUSHMARK(SP); |
|
|
564 | XPUSHs (sub_init); |
|
|
565 | PUTBACK; |
|
|
566 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
1084 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
567 | SPAGAIN; |
1085 | SPAGAIN; |
568 | |
|
|
569 | ENTER; /* necessary e.g. for dounwind */ |
|
|
570 | } |
1086 | } |
571 | |
1087 | |
572 | static void |
1088 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1089 | INLINE void |
|
|
1090 | transfer_tail (pTHX) |
|
|
1091 | { |
|
|
1092 | struct coro *next = (struct coro *)transfer_next; |
|
|
1093 | assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */ |
|
|
1094 | assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next)); |
|
|
1095 | |
573 | free_coro_mortal () |
1096 | free_coro_mortal (aTHX); |
574 | { |
1097 | |
575 | if (coro_mortal) |
1098 | if (expect_false (next->throw)) |
576 | { |
|
|
577 | SvREFCNT_dec (coro_mortal); |
|
|
578 | coro_mortal = 0; |
|
|
579 | } |
1099 | { |
580 | } |
1100 | SV *exception = sv_2mortal (next->throw); |
581 | |
1101 | |
582 | static void |
1102 | next->throw = 0; |
583 | coro_run (void *arg) |
1103 | sv_setsv (ERRSV, exception); |
584 | { |
1104 | croak (0); |
585 | /* |
1105 | } |
|
|
1106 | } |
|
|
1107 | |
|
|
1108 | /* |
586 | * this is a _very_ stripped down perl interpreter ;) |
1109 | * this is a _very_ stripped down perl interpreter ;) |
587 | */ |
1110 | */ |
|
|
1111 | static void |
|
|
1112 | cctx_run (void *arg) |
|
|
1113 | { |
|
|
1114 | #ifdef USE_ITHREADS |
|
|
1115 | # if CORO_PTHREAD |
|
|
1116 | PERL_SET_CONTEXT (coro_thx); |
|
|
1117 | # endif |
|
|
1118 | #endif |
|
|
1119 | { |
588 | dTHX; |
1120 | dTHX; |
589 | PL_top_env = &PL_start_env; |
|
|
590 | |
1121 | |
591 | UNLOCK; |
1122 | /* normally we would need to skip the entersub here */ |
|
|
1123 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1124 | /* PL_nop = PL_nop->op_next */ |
592 | |
1125 | |
593 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
1126 | /* inject a fake subroutine call to cctx_init */ |
594 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
1127 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
595 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
|
|
596 | |
1128 | |
|
|
1129 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1130 | /* TODO: throwing an exception here might be deadly, VERIFY */ |
|
|
1131 | transfer_tail (aTHX); |
|
|
1132 | |
597 | /* somebody will hit me for both perl_run and PL_restart_op */ |
1133 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
598 | perl_run (aTHX_ PERL_GET_CONTEXT); |
1134 | PL_restartop = PL_op; |
|
|
1135 | perl_run (PL_curinterp); |
599 | |
1136 | |
600 | abort (); |
1137 | /* |
|
|
1138 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1139 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1140 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1141 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1142 | * coroutine as Coro has no such concept |
|
|
1143 | */ |
|
|
1144 | PL_top_env = main_top_env; |
|
|
1145 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1146 | } |
601 | } |
1147 | } |
602 | |
1148 | |
603 | static coro_stack * |
1149 | static coro_cctx * |
604 | stack_new () |
1150 | cctx_new () |
605 | { |
1151 | { |
606 | coro_stack *stack; |
1152 | coro_cctx *cctx; |
607 | |
1153 | |
|
|
1154 | ++cctx_count; |
608 | New (0, stack, 1, coro_stack); |
1155 | New (0, cctx, 1, coro_cctx); |
|
|
1156 | |
|
|
1157 | cctx->gen = cctx_gen; |
|
|
1158 | cctx->flags = 0; |
|
|
1159 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1160 | |
|
|
1161 | return cctx; |
|
|
1162 | } |
|
|
1163 | |
|
|
1164 | /* create a new cctx only suitable as source */ |
|
|
1165 | static coro_cctx * |
|
|
1166 | cctx_new_empty () |
|
|
1167 | { |
|
|
1168 | coro_cctx *cctx = cctx_new (); |
|
|
1169 | |
|
|
1170 | cctx->sptr = 0; |
|
|
1171 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1172 | |
|
|
1173 | return cctx; |
|
|
1174 | } |
|
|
1175 | |
|
|
1176 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1177 | static coro_cctx * |
|
|
1178 | cctx_new_run () |
|
|
1179 | { |
|
|
1180 | coro_cctx *cctx = cctx_new (); |
|
|
1181 | void *stack_start; |
|
|
1182 | size_t stack_size; |
609 | |
1183 | |
610 | #if HAVE_MMAP |
1184 | #if HAVE_MMAP |
611 | |
1185 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
612 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
1186 | /* mmap supposedly does allocate-on-write for us */ |
613 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
1187 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
614 | |
1188 | |
615 | if (stack->sptr == (void *)-1) |
1189 | if (cctx->sptr != (void *)-1) |
|
|
1190 | { |
|
|
1191 | #if CORO_STACKGUARD |
|
|
1192 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1193 | #endif |
|
|
1194 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1195 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1196 | cctx->flags |= CC_MAPPED; |
616 | { |
1197 | } |
|
|
1198 | else |
|
|
1199 | #endif |
|
|
1200 | { |
|
|
1201 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1202 | New (0, cctx->sptr, cctx_stacksize, long); |
|
|
1203 | |
|
|
1204 | if (!cctx->sptr) |
|
|
1205 | { |
617 | perror ("FATAL: unable to mmap stack for coroutine"); |
1206 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
618 | _exit (EXIT_FAILURE); |
1207 | _exit (EXIT_FAILURE); |
619 | } |
1208 | } |
620 | |
1209 | |
621 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
1210 | stack_start = cctx->sptr; |
622 | |
1211 | stack_size = cctx->ssize; |
623 | #else |
|
|
624 | |
|
|
625 | stack->ssize = STACKSIZE * (long)sizeof (long); |
|
|
626 | New (0, stack->sptr, STACKSIZE, long); |
|
|
627 | |
|
|
628 | if (!stack->sptr) |
|
|
629 | { |
1212 | } |
630 | perror (stderr, "FATAL: unable to malloc stack for coroutine"); |
|
|
631 | _exit (EXIT_FAILURE); |
|
|
632 | } |
|
|
633 | |
1213 | |
|
|
1214 | #if CORO_USE_VALGRIND |
|
|
1215 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
634 | #endif |
1216 | #endif |
635 | |
1217 | |
636 | coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize); |
1218 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
637 | |
1219 | |
638 | return stack; |
1220 | return cctx; |
639 | } |
1221 | } |
640 | |
1222 | |
641 | static void |
1223 | static void |
642 | stack_free (coro_stack *stack) |
1224 | cctx_destroy (coro_cctx *cctx) |
643 | { |
1225 | { |
644 | if (!stack || stack == main_stack) |
1226 | if (!cctx) |
645 | return; |
1227 | return; |
646 | |
1228 | |
|
|
1229 | --cctx_count; |
|
|
1230 | coro_destroy (&cctx->cctx); |
|
|
1231 | |
|
|
1232 | /* coro_transfer creates new, empty cctx's */ |
|
|
1233 | if (cctx->sptr) |
|
|
1234 | { |
|
|
1235 | #if CORO_USE_VALGRIND |
|
|
1236 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1237 | #endif |
|
|
1238 | |
647 | #if HAVE_MMAP |
1239 | #if HAVE_MMAP |
648 | munmap (stack->sptr, stack->ssize); |
1240 | if (cctx->flags & CC_MAPPED) |
649 | #else |
1241 | munmap (cctx->sptr, cctx->ssize); |
|
|
1242 | else |
|
|
1243 | #endif |
650 | Safefree (stack->sptr); |
1244 | Safefree (cctx->sptr); |
651 | #endif |
|
|
652 | |
|
|
653 | Safefree (stack); |
|
|
654 | } |
|
|
655 | |
|
|
656 | static coro_stack *stack_first; |
|
|
657 | |
|
|
658 | static coro_stack * |
|
|
659 | stack_get () |
|
|
660 | { |
|
|
661 | coro_stack *stack; |
|
|
662 | |
|
|
663 | if (stack_first) |
|
|
664 | { |
|
|
665 | stack = stack_first; |
|
|
666 | stack_first = stack->next; |
|
|
667 | } |
|
|
668 | else |
|
|
669 | { |
|
|
670 | stack = stack_new (); |
|
|
671 | PL_op = PL_op->op_next; |
|
|
672 | } |
1245 | } |
673 | |
1246 | |
674 | return stack; |
1247 | Safefree (cctx); |
675 | } |
1248 | } |
676 | |
1249 | |
677 | static void |
1250 | /* wether this cctx should be destructed */ |
678 | stack_put (coro_stack *stack) |
1251 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
679 | { |
|
|
680 | stack->next = stack_first; |
|
|
681 | stack_first = stack; |
|
|
682 | } |
|
|
683 | |
1252 | |
684 | /* never call directly, always through the coro_state_transfer global variable */ |
1253 | static coro_cctx * |
|
|
1254 | cctx_get (pTHX) |
|
|
1255 | { |
|
|
1256 | while (expect_true (cctx_first)) |
|
|
1257 | { |
|
|
1258 | coro_cctx *cctx = cctx_first; |
|
|
1259 | cctx_first = cctx->next; |
|
|
1260 | --cctx_idle; |
|
|
1261 | |
|
|
1262 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1263 | return cctx; |
|
|
1264 | |
|
|
1265 | cctx_destroy (cctx); |
|
|
1266 | } |
|
|
1267 | |
|
|
1268 | return cctx_new_run (); |
|
|
1269 | } |
|
|
1270 | |
685 | static void |
1271 | static void |
|
|
1272 | cctx_put (coro_cctx *cctx) |
|
|
1273 | { |
|
|
1274 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1275 | |
|
|
1276 | /* free another cctx if overlimit */ |
|
|
1277 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1278 | { |
|
|
1279 | coro_cctx *first = cctx_first; |
|
|
1280 | cctx_first = first->next; |
|
|
1281 | --cctx_idle; |
|
|
1282 | |
|
|
1283 | cctx_destroy (first); |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | ++cctx_idle; |
|
|
1287 | cctx->next = cctx_first; |
|
|
1288 | cctx_first = cctx; |
|
|
1289 | } |
|
|
1290 | |
|
|
1291 | /** coroutine switching *****************************************************/ |
|
|
1292 | |
|
|
1293 | static void |
|
|
1294 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1295 | { |
|
|
1296 | if (expect_true (prev != next)) |
|
|
1297 | { |
|
|
1298 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1299 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
|
|
1300 | |
|
|
1301 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1302 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
|
|
1303 | |
|
|
1304 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1305 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
|
|
1306 | |
|
|
1307 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1308 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1309 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1310 | #endif |
|
|
1311 | } |
|
|
1312 | } |
|
|
1313 | |
|
|
1314 | /* always use the TRANSFER macro */ |
|
|
1315 | static void NOINLINE |
686 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
1316 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
687 | { |
1317 | { |
688 | dSTACKLEVEL; |
1318 | dSTACKLEVEL; |
689 | |
1319 | |
690 | /* sometimes transfer is only called to set idle_sp */ |
1320 | /* sometimes transfer is only called to set idle_sp */ |
691 | if (flags == TRANSFER_SET_STACKLEVEL) |
1321 | if (expect_false (!next)) |
692 | ((coro_stack *)prev)->idle_sp = STACKLEVEL; |
1322 | { |
693 | else if (prev != next) |
1323 | ((coro_cctx *)prev)->idle_sp = (void *)stacklevel; |
|
|
1324 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
694 | { |
1325 | } |
|
|
1326 | else if (expect_true (prev != next)) |
|
|
1327 | { |
695 | coro_stack *prev__stack; |
1328 | coro_cctx *prev__cctx; |
696 | |
1329 | |
697 | LOCK; |
1330 | if (expect_false (prev->flags & CF_NEW)) |
698 | |
|
|
699 | if (next->mainstack) |
|
|
700 | { |
1331 | { |
701 | /* coroutine already started */ |
1332 | /* create a new empty/source context */ |
702 | SAVE (prev, flags); |
1333 | prev->cctx = cctx_new_empty (); |
703 | LOAD (next); |
1334 | prev->flags &= ~CF_NEW; |
|
|
1335 | prev->flags |= CF_RUNNING; |
|
|
1336 | } |
|
|
1337 | |
|
|
1338 | prev->flags &= ~CF_RUNNING; |
|
|
1339 | next->flags |= CF_RUNNING; |
|
|
1340 | |
|
|
1341 | /* first get rid of the old state */ |
|
|
1342 | save_perl (aTHX_ prev); |
|
|
1343 | |
|
|
1344 | if (expect_false (next->flags & CF_NEW)) |
|
|
1345 | { |
|
|
1346 | /* need to start coroutine */ |
|
|
1347 | next->flags &= ~CF_NEW; |
|
|
1348 | /* setup coroutine call */ |
|
|
1349 | coro_setup (aTHX_ next); |
704 | } |
1350 | } |
705 | else |
1351 | else |
|
|
1352 | load_perl (aTHX_ next); |
|
|
1353 | |
|
|
1354 | prev__cctx = prev->cctx; |
|
|
1355 | |
|
|
1356 | /* possibly untie and reuse the cctx */ |
|
|
1357 | if (expect_true ( |
|
|
1358 | prev__cctx->idle_sp == (void *)stacklevel |
|
|
1359 | && !(prev__cctx->flags & CC_TRACE) |
|
|
1360 | && !force_cctx |
|
|
1361 | )) |
706 | { |
1362 | { |
707 | /* need to start coroutine */ |
1363 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
708 | /* first get rid of the old state */ |
1364 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
709 | SAVE (prev, -1); |
1365 | |
710 | /* setup coroutine call */ |
1366 | prev->cctx = 0; |
711 | setup_coro (next); |
1367 | |
712 | /* need a stack */ |
1368 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
713 | next->stack = 0; |
1369 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
|
|
1370 | if (expect_false (CCTX_EXPIRED (prev__cctx))) |
|
|
1371 | if (!next->cctx) |
|
|
1372 | next->cctx = cctx_get (aTHX); |
|
|
1373 | |
|
|
1374 | cctx_put (prev__cctx); |
714 | } |
1375 | } |
715 | |
1376 | |
716 | prev__stack = prev->stack; |
1377 | ++next->usecount; |
717 | |
1378 | |
718 | /* possibly "free" the stack */ |
1379 | if (expect_true (!next->cctx)) |
719 | if (prev__stack->idle_sp == STACKLEVEL) |
1380 | next->cctx = cctx_get (aTHX); |
|
|
1381 | |
|
|
1382 | assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); |
|
|
1383 | transfer_next = next; |
|
|
1384 | |
|
|
1385 | if (expect_false (prev__cctx != next->cctx)) |
720 | { |
1386 | { |
721 | stack_put (prev__stack); |
1387 | prev__cctx->top_env = PL_top_env; |
722 | prev->stack = 0; |
1388 | PL_top_env = next->cctx->top_env; |
|
|
1389 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
723 | } |
1390 | } |
724 | |
1391 | |
725 | if (!next->stack) |
1392 | transfer_tail (aTHX); |
726 | next->stack = stack_get (); |
|
|
727 | |
|
|
728 | if (prev__stack != next->stack) |
|
|
729 | { |
|
|
730 | prev__stack->top_env = PL_top_env; |
|
|
731 | PL_top_env = next->stack->top_env; |
|
|
732 | coro_transfer (&prev__stack->cctx, &next->stack->cctx); |
|
|
733 | } |
|
|
734 | |
|
|
735 | free_coro_mortal (); |
|
|
736 | |
|
|
737 | UNLOCK; |
|
|
738 | } |
1393 | } |
739 | } |
1394 | } |
740 | |
1395 | |
741 | /* use this function pointer to call the above function */ |
1396 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
742 | /* this is done to increase chances of the compiler not inlining the call */ |
1397 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
743 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
744 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
745 | |
1398 | |
746 | struct transfer_args |
1399 | /** high level stuff ********************************************************/ |
747 | { |
|
|
748 | struct coro *prev, *next; |
|
|
749 | int flags; |
|
|
750 | }; |
|
|
751 | |
1400 | |
752 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
|
|
753 | |
|
|
754 | static void |
1401 | static int |
755 | coro_state_destroy (struct coro *coro) |
1402 | coro_state_destroy (pTHX_ struct coro *coro) |
756 | { |
1403 | { |
757 | if (coro->refcnt--) |
1404 | if (coro->flags & CF_DESTROYED) |
758 | return; |
1405 | return 0; |
|
|
1406 | |
|
|
1407 | if (coro->on_destroy) |
|
|
1408 | coro->on_destroy (aTHX_ coro); |
|
|
1409 | |
|
|
1410 | coro->flags |= CF_DESTROYED; |
|
|
1411 | |
|
|
1412 | if (coro->flags & CF_READY) |
|
|
1413 | { |
|
|
1414 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1415 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1416 | --coro_nready; |
|
|
1417 | } |
|
|
1418 | else |
|
|
1419 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
759 | |
1420 | |
760 | if (coro->mainstack && coro->mainstack != main_mainstack) |
1421 | if (coro->mainstack && coro->mainstack != main_mainstack) |
761 | { |
1422 | { |
762 | struct coro temp; |
1423 | struct coro temp; |
763 | |
1424 | |
764 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
1425 | assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
|
|
1426 | |
|
|
1427 | save_perl (aTHX_ &temp); |
765 | LOAD (aTHX_ coro); |
1428 | load_perl (aTHX_ coro); |
766 | |
1429 | |
767 | destroy_stacks (aTHX); |
1430 | coro_destruct (aTHX_ coro); |
768 | |
1431 | |
769 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
1432 | load_perl (aTHX_ &temp); |
770 | |
1433 | |
771 | coro->mainstack = 0; |
1434 | coro->slot = 0; |
772 | } |
1435 | } |
773 | |
1436 | |
774 | stack_free (coro->stack); |
1437 | cctx_destroy (coro->cctx); |
775 | SvREFCNT_dec (coro->args); |
1438 | SvREFCNT_dec (coro->args); |
776 | Safefree (coro); |
1439 | |
|
|
1440 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1441 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1442 | if (coro == coro_first) coro_first = coro->next; |
|
|
1443 | |
|
|
1444 | return 1; |
777 | } |
1445 | } |
778 | |
1446 | |
779 | static int |
1447 | static int |
780 | coro_state_clear (SV *sv, MAGIC *mg) |
1448 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
781 | { |
1449 | { |
782 | struct coro *coro = (struct coro *)mg->mg_ptr; |
1450 | struct coro *coro = (struct coro *)mg->mg_ptr; |
783 | mg->mg_ptr = 0; |
1451 | mg->mg_ptr = 0; |
784 | |
1452 | |
|
|
1453 | coro->hv = 0; |
|
|
1454 | |
|
|
1455 | if (--coro->refcnt < 0) |
|
|
1456 | { |
785 | coro_state_destroy (coro); |
1457 | coro_state_destroy (aTHX_ coro); |
|
|
1458 | Safefree (coro); |
|
|
1459 | } |
786 | |
1460 | |
787 | return 0; |
1461 | return 0; |
788 | } |
1462 | } |
789 | |
1463 | |
790 | static int |
1464 | static int |
791 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
1465 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
792 | { |
1466 | { |
793 | struct coro *coro = (struct coro *)mg->mg_ptr; |
1467 | struct coro *coro = (struct coro *)mg->mg_ptr; |
794 | |
1468 | |
795 | ++coro->refcnt; |
1469 | ++coro->refcnt; |
796 | |
1470 | |
797 | return 0; |
1471 | return 0; |
798 | } |
1472 | } |
799 | |
1473 | |
800 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
1474 | static MGVTBL coro_state_vtbl = { |
|
|
1475 | 0, 0, 0, 0, |
|
|
1476 | coro_state_free, |
|
|
1477 | 0, |
|
|
1478 | #ifdef MGf_DUP |
|
|
1479 | coro_state_dup, |
|
|
1480 | #else |
|
|
1481 | # define MGf_DUP 0 |
|
|
1482 | #endif |
|
|
1483 | }; |
801 | |
1484 | |
802 | static struct coro * |
|
|
803 | SvSTATE (SV *coro) |
|
|
804 | { |
|
|
805 | HV *stash; |
|
|
806 | MAGIC *mg; |
|
|
807 | |
|
|
808 | if (SvROK (coro)) |
|
|
809 | coro = SvRV (coro); |
|
|
810 | |
|
|
811 | stash = SvSTASH (coro); |
|
|
812 | if (stash != coro_stash && stash != coro_state_stash) |
|
|
813 | { |
|
|
814 | /* very slow, but rare, check */ |
|
|
815 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
816 | croak ("Coro::State object required"); |
|
|
817 | } |
|
|
818 | |
|
|
819 | mg = SvMAGIC (coro); |
|
|
820 | assert (mg->mg_type == PERL_MAGIC_ext); |
|
|
821 | return (struct coro *)mg->mg_ptr; |
|
|
822 | } |
|
|
823 | |
|
|
824 | static void |
1485 | static void |
825 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
1486 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
826 | { |
1487 | { |
827 | ta->prev = SvSTATE (prev); |
1488 | ta->prev = SvSTATE (prev_sv); |
828 | ta->next = SvSTATE (next); |
1489 | ta->next = SvSTATE (next_sv); |
829 | ta->flags = flags; |
1490 | TRANSFER_CHECK (*ta); |
830 | } |
1491 | } |
831 | |
1492 | |
832 | static void |
1493 | static void |
833 | api_transfer (SV *prev, SV *next, int flags) |
1494 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
834 | { |
1495 | { |
835 | dTHX; |
|
|
836 | struct transfer_args ta; |
1496 | struct coro_transfer_args ta; |
837 | |
1497 | |
838 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
1498 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
839 | TRANSFER (ta); |
1499 | TRANSFER (ta, 1); |
840 | } |
1500 | } |
841 | |
1501 | |
842 | /** Coro ********************************************************************/ |
1502 | /** Coro ********************************************************************/ |
843 | |
1503 | |
844 | #define PRIO_MAX 3 |
1504 | INLINE void |
845 | #define PRIO_HIGH 1 |
1505 | coro_enq (pTHX_ struct coro *coro) |
846 | #define PRIO_NORMAL 0 |
1506 | { |
847 | #define PRIO_LOW -1 |
1507 | av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
848 | #define PRIO_IDLE -3 |
1508 | } |
849 | #define PRIO_MIN -4 |
|
|
850 | |
1509 | |
851 | /* for Coro.pm */ |
1510 | INLINE SV * |
852 | static GV *coro_current, *coro_idle; |
1511 | coro_deq (pTHX) |
853 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
|
|
854 | static int coro_nready; |
|
|
855 | |
|
|
856 | static void |
|
|
857 | coro_enq (pTHX_ SV *sv) |
|
|
858 | { |
1512 | { |
859 | int prio; |
1513 | int prio; |
860 | |
1514 | |
861 | if (SvTYPE (sv) != SVt_PVHV) |
1515 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
862 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
1516 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1517 | return av_shift (coro_ready [prio]); |
863 | |
1518 | |
864 | prio = SvSTATE (sv)->prio; |
1519 | return 0; |
|
|
1520 | } |
865 | |
1521 | |
866 | av_push (coro_ready [prio - PRIO_MIN], sv); |
1522 | static int |
|
|
1523 | api_ready (pTHX_ SV *coro_sv) |
|
|
1524 | { |
|
|
1525 | struct coro *coro; |
|
|
1526 | SV *sv_hook; |
|
|
1527 | void (*xs_hook)(void); |
|
|
1528 | |
|
|
1529 | if (SvROK (coro_sv)) |
|
|
1530 | coro_sv = SvRV (coro_sv); |
|
|
1531 | |
|
|
1532 | coro = SvSTATE (coro_sv); |
|
|
1533 | |
|
|
1534 | if (coro->flags & CF_READY) |
|
|
1535 | return 0; |
|
|
1536 | |
|
|
1537 | coro->flags |= CF_READY; |
|
|
1538 | |
|
|
1539 | sv_hook = coro_nready ? 0 : coro_readyhook; |
|
|
1540 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
|
|
1541 | |
|
|
1542 | coro_enq (aTHX_ coro); |
867 | coro_nready++; |
1543 | ++coro_nready; |
|
|
1544 | |
|
|
1545 | if (sv_hook) |
|
|
1546 | { |
|
|
1547 | dSP; |
|
|
1548 | |
|
|
1549 | ENTER; |
|
|
1550 | SAVETMPS; |
|
|
1551 | |
|
|
1552 | PUSHMARK (SP); |
|
|
1553 | PUTBACK; |
|
|
1554 | call_sv (sv_hook, G_DISCARD); |
|
|
1555 | SPAGAIN; |
|
|
1556 | |
|
|
1557 | FREETMPS; |
|
|
1558 | LEAVE; |
|
|
1559 | } |
|
|
1560 | |
|
|
1561 | if (xs_hook) |
|
|
1562 | xs_hook (); |
|
|
1563 | |
|
|
1564 | return 1; |
|
|
1565 | } |
|
|
1566 | |
|
|
1567 | static int |
|
|
1568 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1569 | { |
|
|
1570 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1571 | } |
|
|
1572 | |
|
|
1573 | INLINE void |
|
|
1574 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1575 | { |
|
|
1576 | SV *prev_sv, *next_sv; |
|
|
1577 | |
|
|
1578 | for (;;) |
|
|
1579 | { |
|
|
1580 | next_sv = coro_deq (aTHX); |
|
|
1581 | |
|
|
1582 | /* nothing to schedule: call the idle handler */ |
|
|
1583 | if (expect_false (!next_sv)) |
|
|
1584 | { |
|
|
1585 | dSP; |
|
|
1586 | |
|
|
1587 | ENTER; |
|
|
1588 | SAVETMPS; |
|
|
1589 | |
|
|
1590 | PUSHMARK (SP); |
|
|
1591 | PUTBACK; |
|
|
1592 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1593 | SPAGAIN; |
|
|
1594 | |
|
|
1595 | FREETMPS; |
|
|
1596 | LEAVE; |
|
|
1597 | continue; |
|
|
1598 | } |
|
|
1599 | |
|
|
1600 | ta->next = SvSTATE_hv (next_sv); |
|
|
1601 | |
|
|
1602 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1603 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
|
|
1604 | { |
|
|
1605 | SvREFCNT_dec (next_sv); |
|
|
1606 | /* coro_nready has already been taken care of by destroy */ |
|
|
1607 | continue; |
|
|
1608 | } |
|
|
1609 | |
|
|
1610 | --coro_nready; |
|
|
1611 | break; |
|
|
1612 | } |
|
|
1613 | |
|
|
1614 | /* free this only after the transfer */ |
|
|
1615 | prev_sv = SvRV (coro_current); |
|
|
1616 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1617 | TRANSFER_CHECK (*ta); |
|
|
1618 | assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
|
|
1619 | ta->next->flags &= ~CF_READY; |
|
|
1620 | SvRV_set (coro_current, next_sv); |
|
|
1621 | |
|
|
1622 | free_coro_mortal (aTHX); |
|
|
1623 | coro_mortal = prev_sv; |
|
|
1624 | } |
|
|
1625 | |
|
|
1626 | INLINE void |
|
|
1627 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1628 | { |
|
|
1629 | api_ready (aTHX_ coro_current); |
|
|
1630 | prepare_schedule (aTHX_ ta); |
|
|
1631 | } |
|
|
1632 | |
|
|
1633 | INLINE void |
|
|
1634 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1635 | { |
|
|
1636 | SV *prev = SvRV (coro_current); |
|
|
1637 | |
|
|
1638 | if (coro_nready) |
|
|
1639 | { |
|
|
1640 | prepare_schedule (aTHX_ ta); |
|
|
1641 | api_ready (aTHX_ prev); |
|
|
1642 | } |
|
|
1643 | else |
|
|
1644 | prepare_nop (aTHX_ ta); |
|
|
1645 | } |
|
|
1646 | |
|
|
1647 | static void |
|
|
1648 | api_schedule (pTHX) |
|
|
1649 | { |
|
|
1650 | struct coro_transfer_args ta; |
|
|
1651 | |
|
|
1652 | prepare_schedule (aTHX_ &ta); |
|
|
1653 | TRANSFER (ta, 1); |
|
|
1654 | } |
|
|
1655 | |
|
|
1656 | static int |
|
|
1657 | api_cede (pTHX) |
|
|
1658 | { |
|
|
1659 | struct coro_transfer_args ta; |
|
|
1660 | |
|
|
1661 | prepare_cede (aTHX_ &ta); |
|
|
1662 | |
|
|
1663 | if (expect_true (ta.prev != ta.next)) |
|
|
1664 | { |
|
|
1665 | TRANSFER (ta, 1); |
|
|
1666 | return 1; |
|
|
1667 | } |
|
|
1668 | else |
|
|
1669 | return 0; |
|
|
1670 | } |
|
|
1671 | |
|
|
1672 | static int |
|
|
1673 | api_cede_notself (pTHX) |
|
|
1674 | { |
|
|
1675 | if (coro_nready) |
|
|
1676 | { |
|
|
1677 | struct coro_transfer_args ta; |
|
|
1678 | |
|
|
1679 | prepare_cede_notself (aTHX_ &ta); |
|
|
1680 | TRANSFER (ta, 1); |
|
|
1681 | return 1; |
|
|
1682 | } |
|
|
1683 | else |
|
|
1684 | return 0; |
|
|
1685 | } |
|
|
1686 | |
|
|
1687 | static void |
|
|
1688 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1689 | { |
|
|
1690 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1691 | |
|
|
1692 | if (flags & CC_TRACE) |
|
|
1693 | { |
|
|
1694 | if (!coro->cctx) |
|
|
1695 | coro->cctx = cctx_new_run (); |
|
|
1696 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1697 | croak ("cannot enable tracing on coroutine with custom stack,"); |
|
|
1698 | |
|
|
1699 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1700 | } |
|
|
1701 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1702 | { |
|
|
1703 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1704 | |
|
|
1705 | if (coro->flags & CF_RUNNING) |
|
|
1706 | PL_runops = RUNOPS_DEFAULT; |
|
|
1707 | else |
|
|
1708 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1709 | } |
|
|
1710 | } |
|
|
1711 | |
|
|
1712 | /*****************************************************************************/ |
|
|
1713 | /* PerlIO::cede */ |
|
|
1714 | |
|
|
1715 | typedef struct |
|
|
1716 | { |
|
|
1717 | PerlIOBuf base; |
|
|
1718 | NV next, every; |
|
|
1719 | } PerlIOCede; |
|
|
1720 | |
|
|
1721 | static IV |
|
|
1722 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
1723 | { |
|
|
1724 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1725 | |
|
|
1726 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
1727 | self->next = nvtime () + self->every; |
|
|
1728 | |
|
|
1729 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
868 | } |
1730 | } |
869 | |
1731 | |
870 | static SV * |
1732 | static SV * |
871 | coro_deq (pTHX_ int min_prio) |
1733 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
872 | { |
1734 | { |
873 | int prio = PRIO_MAX - PRIO_MIN; |
1735 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
874 | |
1736 | |
875 | min_prio -= PRIO_MIN; |
1737 | return newSVnv (self->every); |
876 | if (min_prio < 0) |
1738 | } |
877 | min_prio = 0; |
|
|
878 | |
1739 | |
879 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1740 | static IV |
880 | if (AvFILLp (coro_ready [prio]) >= 0) |
1741 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
1742 | { |
|
|
1743 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1744 | double now = nvtime (); |
|
|
1745 | |
|
|
1746 | if (now >= self->next) |
|
|
1747 | { |
|
|
1748 | api_cede (aTHX); |
|
|
1749 | self->next = now + self->every; |
|
|
1750 | } |
|
|
1751 | |
|
|
1752 | return PerlIOBuf_flush (aTHX_ f); |
|
|
1753 | } |
|
|
1754 | |
|
|
1755 | static PerlIO_funcs PerlIO_cede = |
|
|
1756 | { |
|
|
1757 | sizeof(PerlIO_funcs), |
|
|
1758 | "cede", |
|
|
1759 | sizeof(PerlIOCede), |
|
|
1760 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
1761 | PerlIOCede_pushed, |
|
|
1762 | PerlIOBuf_popped, |
|
|
1763 | PerlIOBuf_open, |
|
|
1764 | PerlIOBase_binmode, |
|
|
1765 | PerlIOCede_getarg, |
|
|
1766 | PerlIOBase_fileno, |
|
|
1767 | PerlIOBuf_dup, |
|
|
1768 | PerlIOBuf_read, |
|
|
1769 | PerlIOBuf_unread, |
|
|
1770 | PerlIOBuf_write, |
|
|
1771 | PerlIOBuf_seek, |
|
|
1772 | PerlIOBuf_tell, |
|
|
1773 | PerlIOBuf_close, |
|
|
1774 | PerlIOCede_flush, |
|
|
1775 | PerlIOBuf_fill, |
|
|
1776 | PerlIOBase_eof, |
|
|
1777 | PerlIOBase_error, |
|
|
1778 | PerlIOBase_clearerr, |
|
|
1779 | PerlIOBase_setlinebuf, |
|
|
1780 | PerlIOBuf_get_base, |
|
|
1781 | PerlIOBuf_bufsiz, |
|
|
1782 | PerlIOBuf_get_ptr, |
|
|
1783 | PerlIOBuf_get_cnt, |
|
|
1784 | PerlIOBuf_set_ptrcnt, |
|
|
1785 | }; |
|
|
1786 | |
|
|
1787 | /*****************************************************************************/ |
|
|
1788 | |
|
|
1789 | static const CV *slf_cv; /* for quick consistency check */ |
|
|
1790 | |
|
|
1791 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1792 | static SV *slf_arg0; |
|
|
1793 | static SV *slf_arg1; |
|
|
1794 | static SV *slf_arg2; |
|
|
1795 | |
|
|
1796 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1797 | /* recreate the stack frame as perl will on following calls */ |
|
|
1798 | /* since entersub cleared the stack */ |
|
|
1799 | static OP * |
|
|
1800 | pp_restore (pTHX) |
|
|
1801 | { |
|
|
1802 | dSP; |
|
|
1803 | |
|
|
1804 | PUSHMARK (SP); |
|
|
1805 | |
|
|
1806 | EXTEND (SP, 3); |
|
|
1807 | if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); |
|
|
1808 | if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); |
|
|
1809 | if (slf_arg2) PUSHs (sv_2mortal (slf_arg2)); |
|
|
1810 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1811 | |
|
|
1812 | RETURNOP (slf_restore.op_first); |
|
|
1813 | } |
|
|
1814 | |
|
|
1815 | static void |
|
|
1816 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1817 | { |
|
|
1818 | prepare_set_stacklevel (ta, (struct coro_cctx *)slf_frame.data); |
|
|
1819 | } |
|
|
1820 | |
|
|
1821 | static void |
|
|
1822 | slf_init_set_stacklevel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1823 | { |
|
|
1824 | assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); |
|
|
1825 | |
|
|
1826 | frame->prepare = slf_prepare_set_stacklevel; |
|
|
1827 | frame->check = slf_check_nop; |
|
|
1828 | frame->data = (void *)SvIV (arg [0]); |
|
|
1829 | } |
|
|
1830 | |
|
|
1831 | static void |
|
|
1832 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1833 | { |
|
|
1834 | SV **arg = (SV **)slf_frame.data; |
|
|
1835 | |
|
|
1836 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1837 | } |
|
|
1838 | |
|
|
1839 | static void |
|
|
1840 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1841 | { |
|
|
1842 | if (items != 2) |
|
|
1843 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1844 | |
|
|
1845 | frame->prepare = slf_prepare_transfer; |
|
|
1846 | frame->check = slf_check_nop; |
|
|
1847 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1848 | } |
|
|
1849 | |
|
|
1850 | static void |
|
|
1851 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1852 | { |
|
|
1853 | frame->prepare = prepare_schedule; |
|
|
1854 | frame->check = slf_check_nop; |
|
|
1855 | } |
|
|
1856 | |
|
|
1857 | static void |
|
|
1858 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1859 | { |
|
|
1860 | frame->prepare = prepare_cede; |
|
|
1861 | frame->check = slf_check_nop; |
|
|
1862 | } |
|
|
1863 | |
|
|
1864 | static void |
|
|
1865 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1866 | { |
|
|
1867 | frame->prepare = prepare_cede_notself; |
|
|
1868 | frame->check = slf_check_nop; |
|
|
1869 | } |
|
|
1870 | |
|
|
1871 | /* we hijack an hopefully unused CV flag for our purposes */ |
|
|
1872 | #define CVf_SLF 0x4000 |
|
|
1873 | |
|
|
1874 | /* |
|
|
1875 | * these not obviously related functions are all rolled into one |
|
|
1876 | * function to increase chances that they all will call transfer with the same |
|
|
1877 | * stack offset |
|
|
1878 | * SLF stands for "schedule-like-function". |
|
|
1879 | */ |
|
|
1880 | static OP * |
|
|
1881 | pp_slf (pTHX) |
|
|
1882 | { |
|
|
1883 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1884 | |
|
|
1885 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1886 | /* the latter happens when a new coro has been started */ |
|
|
1887 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1888 | if (expect_true (!slf_frame.prepare)) |
|
|
1889 | { |
|
|
1890 | /* first iteration */ |
|
|
1891 | dSP; |
|
|
1892 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1893 | int items = SP - arg; /* args without function object */ |
|
|
1894 | SV *gv = *sp; |
|
|
1895 | |
|
|
1896 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1897 | /* for us, divert to the real entersub */ |
|
|
1898 | if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1899 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1900 | |
|
|
1901 | /* pop args */ |
|
|
1902 | SP = PL_stack_base + POPMARK; |
|
|
1903 | |
|
|
1904 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1905 | { |
|
|
1906 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1907 | AV *av = GvAV (PL_defgv); |
|
|
1908 | arg = AvARRAY (av); |
|
|
1909 | items = AvFILLp (av) + 1; |
|
|
1910 | } |
|
|
1911 | |
|
|
1912 | PUTBACK; |
|
|
1913 | |
|
|
1914 | /* now call the init function, which needs to set up slf_frame */ |
|
|
1915 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
1916 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
1917 | } |
|
|
1918 | |
|
|
1919 | /* now that we have a slf_frame, interpret it! */ |
|
|
1920 | /* we use a callback system not to make the code needlessly */ |
|
|
1921 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1922 | |
|
|
1923 | do |
|
|
1924 | { |
|
|
1925 | struct coro_transfer_args ta; |
|
|
1926 | |
|
|
1927 | slf_frame.prepare (aTHX_ &ta); |
|
|
1928 | TRANSFER (ta, 0); |
|
|
1929 | |
|
|
1930 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1931 | } |
|
|
1932 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1933 | |
|
|
1934 | { |
|
|
1935 | dSP; |
|
|
1936 | SV **bot = PL_stack_base + checkmark; |
|
|
1937 | int gimme = GIMME_V; |
|
|
1938 | |
|
|
1939 | slf_frame.prepare = 0; /* invalidate the frame, so it gets initialised again next time */ |
|
|
1940 | |
|
|
1941 | /* make sure we put something on the stack in scalar context */ |
|
|
1942 | if (gimme == G_SCALAR) |
881 | { |
1943 | { |
882 | coro_nready--; |
1944 | if (sp == bot) |
883 | return av_shift (coro_ready [prio]); |
1945 | XPUSHs (&PL_sv_undef); |
|
|
1946 | |
|
|
1947 | SP = bot + 1; |
884 | } |
1948 | } |
885 | |
1949 | |
886 | return 0; |
|
|
887 | } |
|
|
888 | |
|
|
889 | static void |
|
|
890 | api_ready (SV *coro) |
|
|
891 | { |
|
|
892 | dTHX; |
|
|
893 | |
|
|
894 | if (SvROK (coro)) |
|
|
895 | coro = SvRV (coro); |
|
|
896 | |
|
|
897 | LOCK; |
|
|
898 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
899 | UNLOCK; |
|
|
900 | } |
|
|
901 | |
|
|
902 | static void |
|
|
903 | prepare_schedule (aTHX_ struct transfer_args *ta) |
|
|
904 | { |
|
|
905 | SV *current, *prev, *next; |
|
|
906 | |
|
|
907 | LOCK; |
|
|
908 | |
|
|
909 | current = GvSV (coro_current); |
|
|
910 | |
|
|
911 | for (;;) |
|
|
912 | { |
|
|
913 | LOCK; |
|
|
914 | |
|
|
915 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
916 | |
|
|
917 | if (next) |
|
|
918 | break; |
|
|
919 | |
|
|
920 | UNLOCK; |
|
|
921 | |
|
|
922 | { |
|
|
923 | dSP; |
|
|
924 | |
|
|
925 | ENTER; |
|
|
926 | SAVETMPS; |
|
|
927 | |
|
|
928 | PUSHMARK (SP); |
|
|
929 | PUTBACK; |
1950 | PUTBACK; |
930 | call_sv (GvSV (coro_idle), G_DISCARD); |
1951 | } |
931 | |
1952 | |
932 | FREETMPS; |
1953 | return NORMAL; |
933 | LEAVE; |
1954 | } |
|
|
1955 | |
|
|
1956 | static void |
|
|
1957 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, SV **arg, int items) |
|
|
1958 | { |
|
|
1959 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
1960 | |
|
|
1961 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
1962 | && PL_op->op_ppaddr != pp_slf) |
|
|
1963 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
1964 | |
|
|
1965 | if (items > 3) |
|
|
1966 | croak ("Coro only supports up to three arguments to SLF functions currently (not %d), caught", items); |
|
|
1967 | |
|
|
1968 | CvFLAGS (cv) |= CVf_SLF; |
|
|
1969 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
1970 | slf_cv = cv; |
|
|
1971 | |
|
|
1972 | /* we patch the op, and then re-run the whole call */ |
|
|
1973 | /* we have to put the same argument on the stack for this to work */ |
|
|
1974 | /* and this will be done by pp_restore */ |
|
|
1975 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
1976 | slf_restore.op_type = OP_CUSTOM; |
|
|
1977 | slf_restore.op_ppaddr = pp_restore; |
|
|
1978 | slf_restore.op_first = PL_op; |
|
|
1979 | |
|
|
1980 | slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; |
|
|
1981 | slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; |
|
|
1982 | slf_arg2 = items > 2 ? SvREFCNT_inc (arg [2]) : 0; |
|
|
1983 | |
|
|
1984 | PL_op->op_ppaddr = pp_slf; |
|
|
1985 | |
|
|
1986 | PL_op = (OP *)&slf_restore; |
|
|
1987 | } |
|
|
1988 | |
|
|
1989 | /*****************************************************************************/ |
|
|
1990 | |
|
|
1991 | static void |
|
|
1992 | coro_semaphore_adjust (pTHX_ AV *av, int adjust) |
|
|
1993 | { |
|
|
1994 | SV *count_sv = AvARRAY (av)[0]; |
|
|
1995 | IV count = SvIVX (count_sv); |
|
|
1996 | |
|
|
1997 | count += adjust; |
|
|
1998 | SvIVX (count_sv) = count; |
|
|
1999 | |
|
|
2000 | /* now wake up as many waiters as possible */ |
|
|
2001 | while (count > 0 && AvFILLp (av) >= count) |
|
|
2002 | { |
|
|
2003 | SV *cb; |
|
|
2004 | |
|
|
2005 | /* swap first two elements so we can shift a waiter */ |
|
|
2006 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2007 | AvARRAY (av)[1] = count_sv; |
|
|
2008 | cb = av_shift (av); |
|
|
2009 | |
|
|
2010 | if (SvOBJECT (cb)) |
|
|
2011 | api_ready (aTHX_ cb); |
|
|
2012 | else |
|
|
2013 | croak ("callbacks not yet supported"); |
|
|
2014 | |
|
|
2015 | SvREFCNT_dec (cb); |
|
|
2016 | |
|
|
2017 | --count; |
934 | } |
2018 | } |
|
|
2019 | } |
|
|
2020 | |
|
|
2021 | static void |
|
|
2022 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2023 | { |
|
|
2024 | /* call $sem->adjust (0) to possibly wake up some waiters */ |
|
|
2025 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2026 | } |
|
|
2027 | |
|
|
2028 | static int |
|
|
2029 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2030 | { |
|
|
2031 | AV *av = (AV *)frame->data; |
|
|
2032 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2033 | |
|
|
2034 | if (SvIVX (count_sv) > 0) |
935 | } |
2035 | { |
|
|
2036 | SvSTATE_current->on_destroy = 0; |
|
|
2037 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2038 | return 0; |
|
|
2039 | } |
|
|
2040 | else |
|
|
2041 | { |
|
|
2042 | int i; |
|
|
2043 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2044 | /* waiters list and only add us if we aren't in there already */ |
|
|
2045 | /* this avoids some degenerate memory usage cases */ |
936 | |
2046 | |
937 | prev = SvRV (current); |
2047 | for (i = 1; i <= AvFILLp (av); ++i) |
938 | SvRV (current) = next; |
2048 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2049 | return 1; |
939 | |
2050 | |
940 | /* free this only after the transfer */ |
2051 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
941 | free_coro_mortal (); |
2052 | return 1; |
942 | coro_mortal = prev; |
2053 | } |
943 | |
|
|
944 | ta->prev = SvSTATE (prev); |
|
|
945 | ta->next = SvSTATE (next); |
|
|
946 | ta->flags = TRANSFER_SAVE_ALL; |
|
|
947 | |
|
|
948 | UNLOCK; |
|
|
949 | } |
2054 | } |
950 | |
2055 | |
951 | static void |
2056 | static void |
952 | prepare_cede (aTHX_ struct transfer_args *ta) |
2057 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
953 | { |
2058 | { |
954 | LOCK; |
2059 | AV *av = (AV *)SvRV (arg [0]); |
955 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
956 | UNLOCK; |
|
|
957 | |
2060 | |
958 | prepare_schedule (ta); |
2061 | if (SvIVX (AvARRAY (av)[0]) > 0) |
959 | } |
2062 | { |
|
|
2063 | frame->data = (void *)av; |
|
|
2064 | frame->prepare = prepare_nop; |
|
|
2065 | } |
|
|
2066 | else |
|
|
2067 | { |
|
|
2068 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
960 | |
2069 | |
961 | static void |
2070 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
962 | api_schedule (void) |
2071 | frame->prepare = prepare_schedule; |
963 | { |
|
|
964 | dTHX; |
|
|
965 | struct transfer_args ta; |
|
|
966 | |
2072 | |
967 | prepare_schedule (&ta); |
2073 | /* to avoid race conditions when a woken-up coro gets terminated */ |
968 | TRANSFER (ta); |
2074 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
969 | } |
2075 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2076 | } |
970 | |
2077 | |
971 | static void |
2078 | frame->check = slf_check_semaphore_down; |
972 | api_cede (void) |
|
|
973 | { |
|
|
974 | dTHX; |
|
|
975 | struct transfer_args ta; |
|
|
976 | |
2079 | |
977 | prepare_cede (&ta); |
|
|
978 | TRANSFER (ta); |
|
|
979 | } |
2080 | } |
980 | |
2081 | |
|
|
2082 | /*****************************************************************************/ |
|
|
2083 | |
|
|
2084 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
2085 | |
|
|
2086 | /* create a closure from XS, returns a code reference */ |
|
|
2087 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
2088 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
2089 | static SV * |
|
|
2090 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
2091 | { |
|
|
2092 | CV *cv = (CV *)NEWSV (0, 0); |
|
|
2093 | |
|
|
2094 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
2095 | |
|
|
2096 | CvANON_on (cv); |
|
|
2097 | CvISXSUB_on (cv); |
|
|
2098 | CvXSUB (cv) = xsub; |
|
|
2099 | GENSUB_ARG = arg; |
|
|
2100 | |
|
|
2101 | return newRV_noinc ((SV *)cv); |
|
|
2102 | } |
|
|
2103 | |
|
|
2104 | /*****************************************************************************/ |
|
|
2105 | |
981 | MODULE = Coro::State PACKAGE = Coro::State |
2106 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
982 | |
2107 | |
983 | PROTOTYPES: DISABLE |
2108 | PROTOTYPES: DISABLE |
984 | |
2109 | |
985 | BOOT: |
2110 | BOOT: |
986 | { |
2111 | { |
987 | #ifdef USE_ITHREADS |
2112 | #ifdef USE_ITHREADS |
988 | MUTEX_INIT (&coro_mutex); |
2113 | # if CORO_PTHREAD |
|
|
2114 | coro_thx = PERL_GET_CONTEXT; |
|
|
2115 | # endif |
989 | #endif |
2116 | #endif |
990 | BOOT_PAGESIZE; |
2117 | BOOT_PAGESIZE; |
991 | |
2118 | |
|
|
2119 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
2120 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
2121 | |
|
|
2122 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
2123 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
2124 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
2125 | |
|
|
2126 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
2127 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
2128 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
2129 | |
992 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2130 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
993 | |
2131 | |
994 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
2132 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
995 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
2133 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
996 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
2134 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
|
|
2135 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
997 | |
2136 | |
998 | main_mainstack = PL_mainstack; |
2137 | main_mainstack = PL_mainstack; |
|
|
2138 | main_top_env = PL_top_env; |
999 | |
2139 | |
|
|
2140 | while (main_top_env->je_prev) |
|
|
2141 | main_top_env = main_top_env->je_prev; |
|
|
2142 | |
|
|
2143 | { |
|
|
2144 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
2145 | |
|
|
2146 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
2147 | hv_store_ent (PL_custom_op_names, slf, |
|
|
2148 | newSVpv ("coro_slf", 0), 0); |
|
|
2149 | |
|
|
2150 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
2151 | hv_store_ent (PL_custom_op_descs, slf, |
|
|
2152 | newSVpv ("coro schedule like function", 0), 0); |
|
|
2153 | } |
|
|
2154 | |
1000 | coroapi.ver = CORO_API_VERSION; |
2155 | coroapi.ver = CORO_API_VERSION; |
|
|
2156 | coroapi.rev = CORO_API_REVISION; |
|
|
2157 | |
1001 | coroapi.transfer = api_transfer; |
2158 | coroapi.transfer = api_transfer; |
1002 | |
2159 | |
1003 | Newz (0, main_stack, 1, coro_stack); |
2160 | coroapi.sv_state = SvSTATE_; |
1004 | main_stack->idle_sp = (void *)-1; |
2161 | coroapi.execute_slf = api_execute_slf; |
|
|
2162 | coroapi.prepare_nop = prepare_nop; |
|
|
2163 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2164 | coroapi.prepare_cede = prepare_cede; |
|
|
2165 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
2166 | |
|
|
2167 | { |
|
|
2168 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
2169 | |
|
|
2170 | if (!svp) croak ("Time::HiRes is required"); |
|
|
2171 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
2172 | |
|
|
2173 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
2174 | } |
1005 | |
2175 | |
1006 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
2176 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1007 | } |
2177 | } |
1008 | |
2178 | |
1009 | SV * |
2179 | SV * |
1010 | new (char *klass, ...) |
2180 | new (char *klass, ...) |
1011 | CODE: |
2181 | CODE: |
1012 | { |
2182 | { |
1013 | struct coro *coro; |
2183 | struct coro *coro; |
|
|
2184 | MAGIC *mg; |
1014 | HV *hv; |
2185 | HV *hv; |
1015 | int i; |
2186 | int i; |
1016 | |
2187 | |
1017 | Newz (0, coro, 1, struct coro); |
2188 | Newz (0, coro, 1, struct coro); |
1018 | coro->args = newAV (); |
2189 | coro->args = newAV (); |
|
|
2190 | coro->flags = CF_NEW; |
1019 | |
2191 | |
|
|
2192 | if (coro_first) coro_first->prev = coro; |
|
|
2193 | coro->next = coro_first; |
|
|
2194 | coro_first = coro; |
|
|
2195 | |
1020 | hv = newHV (); |
2196 | coro->hv = hv = newHV (); |
1021 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
2197 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
2198 | mg->mg_flags |= MGf_DUP; |
1022 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
2199 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1023 | |
2200 | |
|
|
2201 | av_extend (coro->args, items - 1); |
1024 | for (i = 1; i < items; i++) |
2202 | for (i = 1; i < items; i++) |
1025 | av_push (coro->args, newSVsv (ST (i))); |
2203 | av_push (coro->args, newSVsv (ST (i))); |
1026 | |
|
|
1027 | coro->stack = main_stack; |
|
|
1028 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
|
|
1029 | /*coro->stack = 0;*/ |
|
|
1030 | } |
2204 | } |
1031 | OUTPUT: |
2205 | OUTPUT: |
1032 | RETVAL |
2206 | RETVAL |
1033 | |
2207 | |
1034 | void |
2208 | void |
|
|
2209 | _set_stacklevel (...) |
|
|
2210 | CODE: |
|
|
2211 | api_execute_slf (aTHX_ cv, slf_init_set_stacklevel, &ST (0), items); |
|
|
2212 | |
|
|
2213 | void |
1035 | transfer (...) |
2214 | transfer (...) |
1036 | ALIAS: |
2215 | PROTOTYPE: $$ |
1037 | Coro::schedule = 1 |
2216 | CODE: |
1038 | Coro::cede = 2 |
2217 | api_execute_slf (aTHX_ cv, slf_init_transfer, &ST (0), items); |
1039 | _set_stacklevel = 3 |
|
|
1040 | CODE: |
|
|
1041 | { |
|
|
1042 | struct transfer_args ta; |
|
|
1043 | |
2218 | |
1044 | switch (ix) |
2219 | bool |
1045 | { |
2220 | _destroy (SV *coro_sv) |
1046 | case 0: |
2221 | CODE: |
1047 | if (items != 3) |
2222 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1048 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
2223 | OUTPUT: |
1049 | |
2224 | RETVAL |
1050 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1051 | break; |
|
|
1052 | |
|
|
1053 | case 1: |
|
|
1054 | prepare_schedule (&ta); |
|
|
1055 | break; |
|
|
1056 | |
|
|
1057 | case 2: |
|
|
1058 | prepare_cede (&ta); |
|
|
1059 | break; |
|
|
1060 | |
|
|
1061 | case 3: |
|
|
1062 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
|
|
1063 | ta.next = 0; |
|
|
1064 | ta.flags = TRANSFER_SET_STACKLEVEL; |
|
|
1065 | break; |
|
|
1066 | } |
|
|
1067 | |
|
|
1068 | TRANSFER (ta); |
|
|
1069 | } |
|
|
1070 | |
2225 | |
1071 | void |
2226 | void |
1072 | _clone_state_from (SV *dst, SV *src) |
|
|
1073 | CODE: |
|
|
1074 | { |
|
|
1075 | struct coro *coro_src = SvSTATE (src); |
|
|
1076 | |
|
|
1077 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
|
|
1078 | |
|
|
1079 | ++coro_src->refcnt; |
|
|
1080 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | void |
|
|
1084 | _nonlocal_goto (IV nextop) |
|
|
1085 | CODE: |
|
|
1086 | /* uuh, somebody will kill me again for this */ |
|
|
1087 | PL_op->op_next = INT2PTR (OP *, nextop); |
|
|
1088 | |
|
|
1089 | void |
|
|
1090 | _exit (code) |
2227 | _exit (int code) |
1091 | int code |
|
|
1092 | PROTOTYPE: $ |
2228 | PROTOTYPE: $ |
1093 | CODE: |
2229 | CODE: |
1094 | _exit (code); |
2230 | _exit (code); |
1095 | |
2231 | |
1096 | MODULE = Coro::State PACKAGE = Coro::Cont |
2232 | int |
|
|
2233 | cctx_stacksize (int new_stacksize = 0) |
|
|
2234 | PROTOTYPE: ;$ |
|
|
2235 | CODE: |
|
|
2236 | RETVAL = cctx_stacksize; |
|
|
2237 | if (new_stacksize) |
|
|
2238 | { |
|
|
2239 | cctx_stacksize = new_stacksize; |
|
|
2240 | ++cctx_gen; |
|
|
2241 | } |
|
|
2242 | OUTPUT: |
|
|
2243 | RETVAL |
|
|
2244 | |
|
|
2245 | int |
|
|
2246 | cctx_max_idle (int max_idle = 0) |
|
|
2247 | PROTOTYPE: ;$ |
|
|
2248 | CODE: |
|
|
2249 | RETVAL = cctx_max_idle; |
|
|
2250 | if (max_idle > 1) |
|
|
2251 | cctx_max_idle = max_idle; |
|
|
2252 | OUTPUT: |
|
|
2253 | RETVAL |
|
|
2254 | |
|
|
2255 | int |
|
|
2256 | cctx_count () |
|
|
2257 | PROTOTYPE: |
|
|
2258 | CODE: |
|
|
2259 | RETVAL = cctx_count; |
|
|
2260 | OUTPUT: |
|
|
2261 | RETVAL |
|
|
2262 | |
|
|
2263 | int |
|
|
2264 | cctx_idle () |
|
|
2265 | PROTOTYPE: |
|
|
2266 | CODE: |
|
|
2267 | RETVAL = cctx_idle; |
|
|
2268 | OUTPUT: |
|
|
2269 | RETVAL |
1097 | |
2270 | |
1098 | void |
2271 | void |
1099 | yield (...) |
2272 | list () |
1100 | PROTOTYPE: @ |
2273 | PROTOTYPE: |
|
|
2274 | PPCODE: |
|
|
2275 | { |
|
|
2276 | struct coro *coro; |
|
|
2277 | for (coro = coro_first; coro; coro = coro->next) |
|
|
2278 | if (coro->hv) |
|
|
2279 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
2280 | } |
|
|
2281 | |
|
|
2282 | void |
|
|
2283 | call (Coro::State coro, SV *coderef) |
|
|
2284 | ALIAS: |
|
|
2285 | eval = 1 |
|
|
2286 | CODE: |
|
|
2287 | { |
|
|
2288 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
2289 | { |
|
|
2290 | struct coro temp; |
|
|
2291 | |
|
|
2292 | if (!(coro->flags & CF_RUNNING)) |
|
|
2293 | { |
|
|
2294 | PUTBACK; |
|
|
2295 | save_perl (aTHX_ &temp); |
|
|
2296 | load_perl (aTHX_ coro); |
|
|
2297 | } |
|
|
2298 | |
|
|
2299 | { |
|
|
2300 | dSP; |
|
|
2301 | ENTER; |
|
|
2302 | SAVETMPS; |
|
|
2303 | PUTBACK; |
|
|
2304 | PUSHSTACK; |
|
|
2305 | PUSHMARK (SP); |
|
|
2306 | |
|
|
2307 | if (ix) |
|
|
2308 | eval_sv (coderef, 0); |
|
|
2309 | else |
|
|
2310 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
2311 | |
|
|
2312 | POPSTACK; |
|
|
2313 | SPAGAIN; |
|
|
2314 | FREETMPS; |
|
|
2315 | LEAVE; |
|
|
2316 | PUTBACK; |
|
|
2317 | } |
|
|
2318 | |
|
|
2319 | if (!(coro->flags & CF_RUNNING)) |
|
|
2320 | { |
|
|
2321 | save_perl (aTHX_ coro); |
|
|
2322 | load_perl (aTHX_ &temp); |
|
|
2323 | SPAGAIN; |
|
|
2324 | } |
|
|
2325 | } |
|
|
2326 | } |
|
|
2327 | |
|
|
2328 | SV * |
|
|
2329 | is_ready (Coro::State coro) |
|
|
2330 | PROTOTYPE: $ |
|
|
2331 | ALIAS: |
|
|
2332 | is_ready = CF_READY |
|
|
2333 | is_running = CF_RUNNING |
|
|
2334 | is_new = CF_NEW |
|
|
2335 | is_destroyed = CF_DESTROYED |
|
|
2336 | CODE: |
|
|
2337 | RETVAL = boolSV (coro->flags & ix); |
|
|
2338 | OUTPUT: |
|
|
2339 | RETVAL |
|
|
2340 | |
|
|
2341 | void |
|
|
2342 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
|
|
2343 | PROTOTYPE: $;$ |
1101 | CODE: |
2344 | CODE: |
1102 | { |
2345 | SvREFCNT_dec (self->throw); |
1103 | SV *yieldstack; |
2346 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
1104 | SV *sv; |
|
|
1105 | AV *defav = GvAV (PL_defgv); |
|
|
1106 | struct coro *prev, *next; |
|
|
1107 | |
2347 | |
1108 | yieldstack = *hv_fetch ( |
2348 | void |
1109 | (HV *)SvRV (GvSV (coro_current)), |
2349 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
1110 | "yieldstack", sizeof ("yieldstack") - 1, |
2350 | PROTOTYPE: $;$ |
|
|
2351 | C_ARGS: aTHX_ coro, flags |
|
|
2352 | |
|
|
2353 | SV * |
|
|
2354 | has_cctx (Coro::State coro) |
|
|
2355 | PROTOTYPE: $ |
|
|
2356 | CODE: |
|
|
2357 | RETVAL = boolSV (!!coro->cctx); |
|
|
2358 | OUTPUT: |
|
|
2359 | RETVAL |
|
|
2360 | |
|
|
2361 | int |
|
|
2362 | is_traced (Coro::State coro) |
|
|
2363 | PROTOTYPE: $ |
|
|
2364 | CODE: |
|
|
2365 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
2366 | OUTPUT: |
|
|
2367 | RETVAL |
|
|
2368 | |
|
|
2369 | UV |
|
|
2370 | rss (Coro::State coro) |
|
|
2371 | PROTOTYPE: $ |
|
|
2372 | ALIAS: |
|
|
2373 | usecount = 1 |
|
|
2374 | CODE: |
|
|
2375 | switch (ix) |
|
|
2376 | { |
|
|
2377 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
2378 | case 1: RETVAL = coro->usecount; break; |
1111 | 0 |
2379 | } |
|
|
2380 | OUTPUT: |
|
|
2381 | RETVAL |
|
|
2382 | |
|
|
2383 | void |
|
|
2384 | force_cctx () |
|
|
2385 | PROTOTYPE: |
|
|
2386 | CODE: |
|
|
2387 | SvSTATE_current->cctx->idle_sp = 0; |
|
|
2388 | |
|
|
2389 | void |
|
|
2390 | swap_defsv (Coro::State self) |
|
|
2391 | PROTOTYPE: $ |
|
|
2392 | ALIAS: |
|
|
2393 | swap_defav = 1 |
|
|
2394 | CODE: |
|
|
2395 | if (!self->slot) |
|
|
2396 | croak ("cannot swap state with coroutine that has no saved state,"); |
|
|
2397 | else |
1112 | ); |
2398 | { |
|
|
2399 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
2400 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
1113 | |
2401 | |
1114 | /* set up @_ -- ugly */ |
2402 | SV *tmp = *src; *src = *dst; *dst = tmp; |
1115 | av_clear (defav); |
2403 | } |
1116 | av_fill (defav, items - 1); |
|
|
1117 | while (items--) |
|
|
1118 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1119 | |
|
|
1120 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1121 | prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1122 | next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1123 | SvREFCNT_dec (sv); |
|
|
1124 | |
|
|
1125 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1126 | } |
|
|
1127 | |
2404 | |
1128 | MODULE = Coro::State PACKAGE = Coro |
2405 | MODULE = Coro::State PACKAGE = Coro |
1129 | |
2406 | |
1130 | BOOT: |
2407 | BOOT: |
1131 | { |
2408 | { |
1132 | int i; |
2409 | int i; |
1133 | |
2410 | |
|
|
2411 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
2412 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
2413 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
2414 | |
|
|
2415 | coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
|
|
2416 | SvREADONLY_on (coro_current); |
|
|
2417 | |
1134 | coro_stash = gv_stashpv ("Coro", TRUE); |
2418 | coro_stash = gv_stashpv ("Coro", TRUE); |
1135 | |
2419 | |
1136 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2420 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1137 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2421 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1138 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2422 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1139 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2423 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1140 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2424 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1141 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2425 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1142 | |
2426 | |
1143 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1144 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1145 | |
|
|
1146 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2427 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1147 | coro_ready[i] = newAV (); |
2428 | coro_ready[i] = newAV (); |
1148 | |
2429 | |
1149 | { |
2430 | { |
1150 | SV *sv = perl_get_sv("Coro::API", 1); |
2431 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
1151 | |
2432 | |
1152 | coroapi.schedule = api_schedule; |
2433 | coroapi.schedule = api_schedule; |
1153 | coroapi.cede = api_cede; |
2434 | coroapi.cede = api_cede; |
|
|
2435 | coroapi.cede_notself = api_cede_notself; |
1154 | coroapi.ready = api_ready; |
2436 | coroapi.ready = api_ready; |
|
|
2437 | coroapi.is_ready = api_is_ready; |
1155 | coroapi.nready = &coro_nready; |
2438 | coroapi.nready = coro_nready; |
1156 | coroapi.current = coro_current; |
2439 | coroapi.current = coro_current; |
1157 | |
2440 | |
1158 | GCoroAPI = &coroapi; |
2441 | GCoroAPI = &coroapi; |
1159 | sv_setiv (sv, (IV)&coroapi); |
2442 | sv_setiv (sv, (IV)&coroapi); |
1160 | SvREADONLY_on (sv); |
2443 | SvREADONLY_on (sv); |
1161 | } |
2444 | } |
1162 | } |
2445 | } |
1163 | |
2446 | |
|
|
2447 | void |
|
|
2448 | schedule (...) |
|
|
2449 | CODE: |
|
|
2450 | api_execute_slf (aTHX_ cv, slf_init_schedule, &ST (0), 0); |
|
|
2451 | |
|
|
2452 | void |
|
|
2453 | cede (...) |
|
|
2454 | CODE: |
|
|
2455 | api_execute_slf (aTHX_ cv, slf_init_cede, &ST (0), 0); |
|
|
2456 | |
|
|
2457 | void |
|
|
2458 | cede_notself (...) |
|
|
2459 | CODE: |
|
|
2460 | api_execute_slf (aTHX_ cv, slf_init_cede_notself, &ST (0), 0); |
|
|
2461 | |
|
|
2462 | void |
|
|
2463 | _set_current (SV *current) |
|
|
2464 | PROTOTYPE: $ |
|
|
2465 | CODE: |
|
|
2466 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
2467 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
2468 | |
|
|
2469 | void |
|
|
2470 | _set_readyhook (SV *hook) |
|
|
2471 | PROTOTYPE: $ |
|
|
2472 | CODE: |
|
|
2473 | SvREFCNT_dec (coro_readyhook); |
|
|
2474 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
|
|
2475 | |
1164 | int |
2476 | int |
1165 | prio (Coro::State coro, int newprio = 0) |
2477 | prio (Coro::State coro, int newprio = 0) |
|
|
2478 | PROTOTYPE: $;$ |
1166 | ALIAS: |
2479 | ALIAS: |
1167 | nice = 1 |
2480 | nice = 1 |
1168 | CODE: |
2481 | CODE: |
1169 | { |
2482 | { |
1170 | RETVAL = coro->prio; |
2483 | RETVAL = coro->prio; |
1171 | |
2484 | |
1172 | if (items > 1) |
2485 | if (items > 1) |
1173 | { |
2486 | { |
1174 | if (ix) |
2487 | if (ix) |
1175 | newprio += coro->prio; |
2488 | newprio = coro->prio - newprio; |
1176 | |
2489 | |
1177 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
2490 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
1178 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
2491 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
1179 | |
2492 | |
1180 | coro->prio = newprio; |
2493 | coro->prio = newprio; |
1181 | } |
2494 | } |
1182 | } |
2495 | } |
|
|
2496 | OUTPUT: |
|
|
2497 | RETVAL |
1183 | |
2498 | |
1184 | void |
2499 | SV * |
1185 | ready (SV *self) |
2500 | ready (SV *self) |
1186 | PROTOTYPE: $ |
2501 | PROTOTYPE: $ |
1187 | CODE: |
2502 | CODE: |
1188 | api_ready (self); |
2503 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
2504 | OUTPUT: |
|
|
2505 | RETVAL |
1189 | |
2506 | |
1190 | int |
2507 | int |
1191 | nready (...) |
2508 | nready (...) |
1192 | PROTOTYPE: |
2509 | PROTOTYPE: |
1193 | CODE: |
2510 | CODE: |
1194 | RETVAL = coro_nready; |
2511 | RETVAL = coro_nready; |
1195 | OUTPUT: |
2512 | OUTPUT: |
1196 | RETVAL |
2513 | RETVAL |
1197 | |
2514 | |
|
|
2515 | # for async_pool speedup |
|
|
2516 | void |
|
|
2517 | _pool_1 (SV *cb) |
|
|
2518 | CODE: |
|
|
2519 | { |
|
|
2520 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2521 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2522 | AV *defav = GvAV (PL_defgv); |
|
|
2523 | SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
|
|
2524 | AV *invoke_av; |
|
|
2525 | int i, len; |
|
|
2526 | |
|
|
2527 | if (!invoke) |
|
|
2528 | { |
|
|
2529 | SV *old = PL_diehook; |
|
|
2530 | PL_diehook = 0; |
|
|
2531 | SvREFCNT_dec (old); |
|
|
2532 | croak ("\3async_pool terminate\2\n"); |
|
|
2533 | } |
|
|
2534 | |
|
|
2535 | SvREFCNT_dec (coro->saved_deffh); |
|
|
2536 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2537 | |
|
|
2538 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2539 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2540 | |
|
|
2541 | invoke_av = (AV *)SvRV (invoke); |
|
|
2542 | len = av_len (invoke_av); |
|
|
2543 | |
|
|
2544 | sv_setsv (cb, AvARRAY (invoke_av)[0]); |
|
|
2545 | |
|
|
2546 | if (len > 0) |
|
|
2547 | { |
|
|
2548 | av_fill (defav, len - 1); |
|
|
2549 | for (i = 0; i < len; ++i) |
|
|
2550 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
|
|
2551 | } |
|
|
2552 | } |
|
|
2553 | |
|
|
2554 | void |
|
|
2555 | _pool_2 (SV *cb) |
|
|
2556 | CODE: |
|
|
2557 | { |
|
|
2558 | struct coro *coro = SvSTATE_current; |
|
|
2559 | |
|
|
2560 | sv_setsv (cb, &PL_sv_undef); |
|
|
2561 | |
|
|
2562 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2563 | coro->saved_deffh = 0; |
|
|
2564 | |
|
|
2565 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
2566 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2567 | { |
|
|
2568 | SV *old = PL_diehook; |
|
|
2569 | PL_diehook = 0; |
|
|
2570 | SvREFCNT_dec (old); |
|
|
2571 | croak ("\3async_pool terminate\2\n"); |
|
|
2572 | } |
|
|
2573 | |
|
|
2574 | av_clear (GvAV (PL_defgv)); |
|
|
2575 | hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
|
|
2576 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
|
|
2577 | |
|
|
2578 | coro->prio = 0; |
|
|
2579 | |
|
|
2580 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
2581 | api_trace (aTHX_ coro_current, 0); |
|
|
2582 | |
|
|
2583 | av_push (av_async_pool, newSVsv (coro_current)); |
|
|
2584 | } |
|
|
2585 | |
|
|
2586 | |
1198 | MODULE = Coro::State PACKAGE = Coro::AIO |
2587 | MODULE = Coro::State PACKAGE = Coro::AIO |
1199 | |
2588 | |
|
|
2589 | void |
|
|
2590 | _get_state (SV *self) |
|
|
2591 | PROTOTYPE: $ |
|
|
2592 | PPCODE: |
|
|
2593 | { |
|
|
2594 | AV *defav = GvAV (PL_defgv); |
|
|
2595 | AV *av = newAV (); |
|
|
2596 | int i; |
|
|
2597 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2598 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2599 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2600 | SvPOK_only (data_sv); |
|
|
2601 | |
|
|
2602 | data->errorno = errno; |
|
|
2603 | data->laststype = PL_laststype; |
|
|
2604 | data->laststatval = PL_laststatval; |
|
|
2605 | data->statcache = PL_statcache; |
|
|
2606 | |
|
|
2607 | av_extend (av, AvFILLp (defav) + 1 + 1); |
|
|
2608 | |
|
|
2609 | for (i = 0; i <= AvFILLp (defav); ++i) |
|
|
2610 | av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
|
|
2611 | |
|
|
2612 | av_push (av, data_sv); |
|
|
2613 | |
|
|
2614 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
2615 | |
|
|
2616 | api_ready (aTHX_ self); |
|
|
2617 | } |
|
|
2618 | |
|
|
2619 | void |
|
|
2620 | _set_state (SV *state) |
|
|
2621 | PROTOTYPE: $ |
|
|
2622 | PPCODE: |
|
|
2623 | { |
|
|
2624 | AV *av = (AV *)SvRV (state); |
|
|
2625 | struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
|
|
2626 | int i; |
|
|
2627 | |
|
|
2628 | errno = data->errorno; |
|
|
2629 | PL_laststype = data->laststype; |
|
|
2630 | PL_laststatval = data->laststatval; |
|
|
2631 | PL_statcache = data->statcache; |
|
|
2632 | |
|
|
2633 | EXTEND (SP, AvFILLp (av)); |
|
|
2634 | for (i = 0; i < AvFILLp (av); ++i) |
|
|
2635 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
|
|
2636 | } |
|
|
2637 | |
|
|
2638 | |
|
|
2639 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
2640 | |
|
|
2641 | BOOT: |
|
|
2642 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
2643 | |
|
|
2644 | void |
|
|
2645 | _schedule (...) |
|
|
2646 | CODE: |
|
|
2647 | { |
|
|
2648 | static int incede; |
|
|
2649 | |
|
|
2650 | api_cede_notself (aTHX); |
|
|
2651 | |
|
|
2652 | ++incede; |
|
|
2653 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
2654 | ; |
|
|
2655 | |
|
|
2656 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
2657 | if (coro_nready >= incede) |
|
|
2658 | { |
|
|
2659 | PUSHMARK (SP); |
|
|
2660 | PUTBACK; |
|
|
2661 | call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
|
|
2662 | SPAGAIN; |
|
|
2663 | } |
|
|
2664 | |
|
|
2665 | --incede; |
|
|
2666 | } |
|
|
2667 | |
|
|
2668 | |
|
|
2669 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
2670 | |
|
|
2671 | BOOT: |
|
|
2672 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
2673 | |
|
|
2674 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
2675 | |
1200 | SV * |
2676 | SV * |
1201 | _get_state () |
2677 | new (SV *klass, SV *count_ = 0) |
1202 | CODE: |
2678 | CODE: |
1203 | { |
2679 | { |
1204 | struct { |
2680 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
1205 | int errorno; |
2681 | AV *av = newAV (); |
1206 | int laststype; |
2682 | av_push (av, newSViv (count_ && SvOK (count_) ? SvIV (count_) : 1)); |
1207 | int laststatval; |
2683 | RETVAL = sv_bless (newRV_noinc ((SV *)av), GvSTASH (CvGV (cv))); |
1208 | Stat_t statcache; |
|
|
1209 | } data; |
|
|
1210 | |
|
|
1211 | data.errorno = errno; |
|
|
1212 | data.laststype = PL_laststype; |
|
|
1213 | data.laststatval = PL_laststatval; |
|
|
1214 | data.statcache = PL_statcache; |
|
|
1215 | |
|
|
1216 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
|
|
1217 | } |
2684 | } |
1218 | OUTPUT: |
2685 | OUTPUT: |
1219 | RETVAL |
2686 | RETVAL |
1220 | |
2687 | |
|
|
2688 | SV * |
|
|
2689 | count (SV *self) |
|
|
2690 | CODE: |
|
|
2691 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
2692 | OUTPUT: |
|
|
2693 | RETVAL |
|
|
2694 | |
1221 | void |
2695 | void |
1222 | _set_state (char *data_) |
2696 | up (SV *self, int adjust = 1) |
1223 | PROTOTYPE: $ |
2697 | ALIAS: |
|
|
2698 | adjust = 1 |
|
|
2699 | CODE: |
|
|
2700 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
|
|
2701 | |
|
|
2702 | void |
|
|
2703 | down (SV *self) |
|
|
2704 | CODE: |
|
|
2705 | api_execute_slf (aTHX_ cv, slf_init_semaphore_down, &ST (0), 1); |
|
|
2706 | |
|
|
2707 | void |
|
|
2708 | try (SV *self) |
|
|
2709 | PPCODE: |
|
|
2710 | { |
|
|
2711 | AV *av = (AV *)SvRV (self); |
|
|
2712 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2713 | IV count = SvIVX (count_sv); |
|
|
2714 | |
|
|
2715 | if (count > 0) |
|
|
2716 | { |
|
|
2717 | --count; |
|
|
2718 | SvIVX (count_sv) = count; |
|
|
2719 | XSRETURN_YES; |
|
|
2720 | } |
|
|
2721 | else |
|
|
2722 | XSRETURN_NO; |
|
|
2723 | } |
|
|
2724 | |
|
|
2725 | void |
|
|
2726 | waiters (SV *self) |
1224 | CODE: |
2727 | CODE: |
1225 | { |
2728 | { |
1226 | struct { |
2729 | AV *av = (AV *)SvRV (self); |
|
|
2730 | |
|
|
2731 | if (GIMME_V == G_SCALAR) |
|
|
2732 | XPUSHs (sv_2mortal (newSVsv (AvARRAY (av)[0]))); |
|
|
2733 | else |
|
|
2734 | { |
1227 | int errorno; |
2735 | int i; |
1228 | int laststype; |
2736 | EXTEND (SP, AvFILLp (av) + 1 - 1); |
1229 | int laststatval; |
2737 | for (i = 1; i <= AvFILLp (av); ++i) |
1230 | Stat_t statcache; |
2738 | PUSHs (newSVsv (AvARRAY (av)[i])); |
1231 | } *data = (void *)data_; |
2739 | } |
1232 | |
|
|
1233 | errno = data->errorno; |
|
|
1234 | PL_laststype = data->laststype; |
|
|
1235 | PL_laststatval = data->laststatval; |
|
|
1236 | PL_statcache = data->statcache; |
|
|
1237 | } |
2740 | } |
|
|
2741 | |