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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 PATCHLEVEL < 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 |
… | |
… | |
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 <signal.h> |
83 | /* 5.11 */ |
33 | |
84 | #ifndef CxHASARGS |
34 | #ifdef HAVE_MMAP |
85 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
35 | # include <unistd.h> |
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36 | # include <sys/mman.h> |
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37 | # ifndef MAP_ANONYMOUS |
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38 | # ifdef MAP_ANON |
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39 | # define MAP_ANONYMOUS MAP_ANON |
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40 | # else |
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41 | # undef HAVE_MMAP |
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42 | # endif |
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 |
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105 | |
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106 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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107 | # undef CORO_STACKGUARD |
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108 | #endif |
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109 | |
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110 | #ifndef CORO_STACKGUARD |
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111 | # define CORO_STACKGUARD 0 |
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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 | |
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148 | static perl_mutex coro_lock; |
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149 | # define LOCK do { MUTEX_LOCK (&coro_lock); } while (0) |
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150 | # define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0) |
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151 | # if CORO_PTHREAD |
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152 | static void *coro_thx; |
43 | # endif |
153 | # endif |
44 | #endif |
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45 | |
154 | |
46 | #define SUB_INIT "Coro::State::initialize" |
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47 | #define UCORO_STATE "_coro_state" |
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48 | |
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49 | /* The next macro should declare a variable stacklevel that contains and approximation |
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50 | * to the current C stack pointer. Its property is that it changes with each call |
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51 | * and should be unique. */ |
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52 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
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53 | |
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54 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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55 | |
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56 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
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57 | |
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58 | #include "CoroAPI.h" |
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59 | |
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60 | #ifdef USE_ITHREADS |
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61 | static perl_mutex coro_mutex; |
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62 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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63 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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64 | #else |
155 | #else |
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156 | |
65 | # define LOCK 0 |
157 | # define LOCK (void)0 |
66 | # define UNLOCK 0 |
158 | # define UNLOCK (void)0 |
67 | #endif |
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68 | |
159 | |
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160 | #endif |
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161 | |
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162 | # undef LOCK |
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163 | # define LOCK (void)0 |
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164 | # undef UNLOCK |
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165 | # define UNLOCK (void)0 |
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166 | |
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167 | /* helper storage struct for Coro::AIO */ |
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168 | struct io_state |
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169 | { |
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170 | AV *res; |
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171 | int errorno; |
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172 | I32 laststype; /* U16 in 5.10.0 */ |
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173 | int laststatval; |
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174 | Stat_t statcache; |
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175 | }; |
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176 | |
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177 | static double (*nvtime)(); /* so why doesn't it take void? */ |
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178 | |
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179 | static U32 cctx_gen; |
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180 | static size_t cctx_stacksize = CORO_STACKSIZE; |
69 | static struct CoroAPI coroapi; |
181 | static struct CoroAPI coroapi; |
70 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
182 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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183 | static JMPENV *main_top_env; |
71 | static HV *coro_state_stash; |
184 | static HV *coro_state_stash, *coro_stash; |
72 | static SV *ucoro_state_sv; |
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73 | static U32 ucoro_state_hash; |
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74 | static SV *coro_mortal; /* will be freed after next transfer */ |
185 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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186 | static volatile struct coro *transfer_next; |
75 | |
187 | |
76 | /* this is actually not only the c stack but also c registers etc... */ |
188 | static GV *irsgv; /* $/ */ |
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189 | static GV *stdoutgv; /* *STDOUT */ |
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190 | static SV *rv_diehook; |
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191 | static SV *rv_warnhook; |
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192 | static HV *hv_sig; /* %SIG */ |
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193 | |
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194 | /* async_pool helper stuff */ |
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195 | static SV *sv_pool_rss; |
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196 | static SV *sv_pool_size; |
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197 | static AV *av_async_pool; |
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198 | |
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199 | /* Coro::AnyEvent */ |
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200 | static SV *sv_activity; |
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201 | |
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202 | static struct coro_cctx *cctx_first; |
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203 | static int cctx_count, cctx_idle; |
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204 | |
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205 | enum { |
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206 | CC_MAPPED = 0x01, |
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207 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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208 | CC_TRACE = 0x04, |
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209 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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210 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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211 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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212 | }; |
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213 | |
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214 | /* this is a structure representing a c-level coroutine */ |
77 | typedef struct { |
215 | typedef struct coro_cctx |
78 | int refcnt; /* pointer reference counter */ |
216 | { |
79 | int usecnt; /* shared by how many coroutines */ |
217 | struct coro_cctx *next; |
80 | int gencnt; /* generation counter */ |
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81 | |
218 | |
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219 | /* the stack */ |
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220 | void *sptr; |
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221 | size_t ssize; |
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222 | |
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223 | /* cpu state */ |
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224 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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225 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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226 | JMPENV *top_env; |
82 | coro_context cctx; |
227 | coro_context cctx; |
83 | |
228 | |
84 | void *sptr; |
229 | U32 gen; |
85 | long ssize; /* positive == mmap, otherwise malloc */ |
230 | #if CORO_USE_VALGRIND |
86 | } coro_stack; |
231 | int valgrind_id; |
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232 | #endif |
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233 | unsigned char flags; |
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234 | } coro_cctx; |
87 | |
235 | |
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236 | enum { |
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237 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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238 | CF_READY = 0x0002, /* coroutine is ready */ |
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239 | CF_NEW = 0x0004, /* has never been switched to */ |
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240 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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241 | }; |
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242 | |
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243 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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244 | typedef struct |
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245 | { |
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246 | SV *defsv; |
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247 | AV *defav; |
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248 | SV *errsv; |
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249 | SV *irsgv; |
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250 | #define VAR(name,type) type name; |
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251 | # include "state.h" |
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252 | #undef VAR |
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253 | } perl_slots; |
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254 | |
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255 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
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256 | |
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257 | /* this is the per-perl-coro slf frame info */ |
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258 | /* it is treated like other "global" interpreter data */ |
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259 | /* and unfortunately is copied around, so kepe it small */ |
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260 | struct slf_frame |
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261 | { |
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262 | void (*prepare) (struct coro_transfer_args *ta); /* 0 means not yet initialised */ |
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263 | int (*check) (pTHX); |
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264 | }; |
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265 | |
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266 | /* this is a structure representing a perl-level coroutine */ |
88 | struct coro { |
267 | struct coro { |
89 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
268 | /* the C coroutine allocated to this perl coroutine, if any */ |
90 | JMPENV start_env; |
269 | coro_cctx *cctx; |
91 | |
270 | |
92 | /* the optional C context */ |
271 | /* process data */ |
93 | coro_stack *stack; |
272 | struct slf_frame slf_frame; /* saved slf frame */ |
94 | void *cursp; |
273 | void *slf_data; |
95 | int gencnt; |
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96 | |
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97 | /* optionally saved, might be zero */ |
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98 | AV *defav; |
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99 | SV *defsv; |
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100 | SV *errsv; |
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101 | |
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102 | /* saved global state not related to stacks */ |
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103 | U8 dowarn; |
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104 | I32 in_eval; |
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105 | |
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106 | /* the stacks and related info (callchain etc..) */ |
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107 | PERL_SI *curstackinfo; |
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108 | AV *curstack; |
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109 | AV *mainstack; |
274 | AV *mainstack; |
110 | SV **stack_sp; |
275 | perl_slots *slot; /* basically the saved sp */ |
111 | OP *op; |
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112 | SV **curpad; |
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113 | AV *comppad; |
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114 | CV *compcv; |
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115 | SV **stack_base; |
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116 | SV **stack_max; |
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117 | SV **tmps_stack; |
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118 | I32 tmps_floor; |
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119 | I32 tmps_ix; |
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120 | I32 tmps_max; |
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121 | I32 *markstack; |
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122 | I32 *markstack_ptr; |
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123 | I32 *markstack_max; |
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124 | I32 *scopestack; |
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125 | I32 scopestack_ix; |
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126 | I32 scopestack_max; |
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127 | ANY *savestack; |
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128 | I32 savestack_ix; |
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129 | I32 savestack_max; |
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130 | OP **retstack; |
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131 | I32 retstack_ix; |
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132 | I32 retstack_max; |
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133 | COP *curcop; |
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134 | JMPENV *top_env; |
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135 | |
276 | |
136 | /* data associated with this coroutine (initial args) */ |
277 | AV *args; /* data associated with this coroutine (initial args) */ |
137 | AV *args; |
278 | int refcnt; /* coroutines are refcounted, yes */ |
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279 | int flags; /* CF_ flags */ |
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280 | HV *hv; /* the perl hash associated with this coro, if any */ |
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281 | |
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282 | /* statistics */ |
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283 | int usecount; /* number of transfers to this coro */ |
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284 | |
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285 | /* coro process data */ |
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286 | int prio; |
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287 | SV *throw; /* exception to be thrown */ |
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288 | |
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289 | /* async_pool */ |
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290 | SV *saved_deffh; |
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291 | |
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292 | /* linked list */ |
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293 | struct coro *next, *prev; |
138 | }; |
294 | }; |
139 | |
295 | |
140 | typedef struct coro *Coro__State; |
296 | typedef struct coro *Coro__State; |
141 | typedef struct coro *Coro__State_or_hashref; |
297 | typedef struct coro *Coro__State_or_hashref; |
142 | |
298 | |
143 | /* mostly copied from op.c:cv_clone2 */ |
299 | static struct slf_frame slf_frame; /* the current slf frame */ |
144 | STATIC AV * |
300 | |
145 | clone_padlist (pTHX_ AV *protopadlist) |
301 | /** Coro ********************************************************************/ |
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302 | |
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303 | #define PRIO_MAX 3 |
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304 | #define PRIO_HIGH 1 |
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305 | #define PRIO_NORMAL 0 |
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306 | #define PRIO_LOW -1 |
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307 | #define PRIO_IDLE -3 |
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308 | #define PRIO_MIN -4 |
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309 | |
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310 | /* for Coro.pm */ |
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311 | static SV *coro_current; |
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312 | static SV *coro_readyhook; |
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313 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
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314 | static struct coro *coro_first; |
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315 | #define coro_nready coroapi.nready |
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316 | |
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317 | /** lowlevel stuff **********************************************************/ |
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318 | |
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319 | static SV * |
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320 | coro_get_sv (pTHX_ const char *name, int create) |
146 | { |
321 | { |
147 | AV *av; |
322 | #if PERL_VERSION_ATLEAST (5,10,0) |
148 | I32 ix; |
323 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
149 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
324 | get_sv (name, create); |
150 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
325 | #endif |
151 | SV **pname = AvARRAY (protopad_name); |
326 | return get_sv (name, create); |
152 | SV **ppad = AvARRAY (protopad); |
327 | } |
153 | I32 fname = AvFILLp (protopad_name); |
328 | |
154 | I32 fpad = AvFILLp (protopad); |
329 | static AV * |
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330 | coro_get_av (pTHX_ const char *name, int create) |
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331 | { |
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332 | #if PERL_VERSION_ATLEAST (5,10,0) |
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333 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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334 | get_av (name, create); |
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335 | #endif |
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336 | return get_av (name, create); |
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337 | } |
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338 | |
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339 | static HV * |
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340 | coro_get_hv (pTHX_ const char *name, int create) |
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341 | { |
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342 | #if PERL_VERSION_ATLEAST (5,10,0) |
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343 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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344 | get_hv (name, create); |
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345 | #endif |
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346 | return get_hv (name, create); |
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347 | } |
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348 | |
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349 | static AV * |
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350 | coro_clone_padlist (pTHX_ CV *cv) |
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351 | { |
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352 | AV *padlist = CvPADLIST (cv); |
155 | AV *newpadlist, *newpad_name, *newpad; |
353 | AV *newpadlist, *newpad; |
156 | SV **npad; |
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157 | |
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158 | newpad_name = newAV (); |
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159 | for (ix = fname; ix >= 0; ix--) |
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160 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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161 | |
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162 | newpad = newAV (); |
|
|
163 | av_fill (newpad, AvFILLp (protopad)); |
|
|
164 | npad = AvARRAY (newpad); |
|
|
165 | |
354 | |
166 | newpadlist = newAV (); |
355 | newpadlist = newAV (); |
167 | AvREAL_off (newpadlist); |
356 | AvREAL_off (newpadlist); |
168 | av_store (newpadlist, 0, (SV *) newpad_name); |
357 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
358 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
359 | #else |
|
|
360 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
|
|
361 | #endif |
|
|
362 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
|
|
363 | --AvFILLp (padlist); |
|
|
364 | |
|
|
365 | av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
169 | av_store (newpadlist, 1, (SV *) newpad); |
366 | av_store (newpadlist, 1, (SV *)newpad); |
170 | |
|
|
171 | av = newAV (); /* will be @_ */ |
|
|
172 | av_extend (av, 0); |
|
|
173 | av_store (newpad, 0, (SV *) av); |
|
|
174 | AvFLAGS (av) = AVf_REIFY; |
|
|
175 | |
|
|
176 | for (ix = fpad; ix > 0; ix--) |
|
|
177 | { |
|
|
178 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
|
|
179 | |
|
|
180 | if (namesv && namesv != &PL_sv_undef) |
|
|
181 | { |
|
|
182 | char *name = SvPVX (namesv); /* XXX */ |
|
|
183 | |
|
|
184 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
|
|
185 | { /* lexical from outside? */ |
|
|
186 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
|
187 | } |
|
|
188 | else |
|
|
189 | { /* our own lexical */ |
|
|
190 | SV *sv; |
|
|
191 | if (*name == '&') |
|
|
192 | sv = SvREFCNT_inc (ppad[ix]); |
|
|
193 | else if (*name == '@') |
|
|
194 | sv = (SV *) newAV (); |
|
|
195 | else if (*name == '%') |
|
|
196 | sv = (SV *) newHV (); |
|
|
197 | else |
|
|
198 | sv = NEWSV (0, 0); |
|
|
199 | |
|
|
200 | #ifdef SvPADBUSY |
|
|
201 | if (!SvPADBUSY (sv)) |
|
|
202 | #endif |
|
|
203 | SvPADMY_on (sv); |
|
|
204 | |
|
|
205 | npad[ix] = sv; |
|
|
206 | } |
|
|
207 | } |
|
|
208 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
|
|
209 | { |
|
|
210 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
|
211 | } |
|
|
212 | else |
|
|
213 | { |
|
|
214 | SV *sv = NEWSV (0, 0); |
|
|
215 | SvPADTMP_on (sv); |
|
|
216 | npad[ix] = sv; |
|
|
217 | } |
|
|
218 | } |
|
|
219 | |
|
|
220 | #if 0 /* return -ENOTUNDERSTOOD */ |
|
|
221 | /* Now that vars are all in place, clone nested closures. */ |
|
|
222 | |
|
|
223 | for (ix = fpad; ix > 0; ix--) { |
|
|
224 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
|
|
225 | if (namesv |
|
|
226 | && namesv != &PL_sv_undef |
|
|
227 | && !(SvFLAGS(namesv) & SVf_FAKE) |
|
|
228 | && *SvPVX(namesv) == '&' |
|
|
229 | && CvCLONE(ppad[ix])) |
|
|
230 | { |
|
|
231 | CV *kid = cv_clone((CV*)ppad[ix]); |
|
|
232 | SvREFCNT_dec(ppad[ix]); |
|
|
233 | CvCLONE_on(kid); |
|
|
234 | SvPADMY_on(kid); |
|
|
235 | npad[ix] = (SV*)kid; |
|
|
236 | } |
|
|
237 | } |
|
|
238 | #endif |
|
|
239 | |
367 | |
240 | return newpadlist; |
368 | return newpadlist; |
241 | } |
369 | } |
242 | |
370 | |
243 | STATIC void |
371 | static void |
244 | free_padlist (pTHX_ AV *padlist) |
372 | free_padlist (pTHX_ AV *padlist) |
245 | { |
373 | { |
246 | /* may be during global destruction */ |
374 | /* may be during global destruction */ |
247 | if (SvREFCNT (padlist)) |
375 | if (SvREFCNT (padlist)) |
248 | { |
376 | { |
… | |
… | |
262 | |
390 | |
263 | SvREFCNT_dec ((SV*)padlist); |
391 | SvREFCNT_dec ((SV*)padlist); |
264 | } |
392 | } |
265 | } |
393 | } |
266 | |
394 | |
267 | STATIC int |
395 | static int |
268 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
396 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
269 | { |
397 | { |
270 | AV *padlist; |
398 | AV *padlist; |
271 | AV *av = (AV *)mg->mg_obj; |
399 | AV *av = (AV *)mg->mg_obj; |
272 | |
400 | |
273 | /* casting is fun. */ |
401 | /* casting is fun. */ |
274 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
402 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
275 | free_padlist (aTHX_ padlist); |
403 | free_padlist (aTHX_ padlist); |
276 | |
404 | |
277 | SvREFCNT_dec (av); |
405 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
278 | } |
|
|
279 | |
406 | |
|
|
407 | return 0; |
|
|
408 | } |
|
|
409 | |
280 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
410 | #define CORO_MAGIC_type_cv PERL_MAGIC_ext |
|
|
411 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
281 | |
412 | |
282 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
413 | static MGVTBL coro_cv_vtbl = { |
|
|
414 | 0, 0, 0, 0, |
|
|
415 | coro_cv_free |
|
|
416 | }; |
|
|
417 | |
|
|
418 | #define CORO_MAGIC(sv, type) \ |
|
|
419 | SvMAGIC (sv) \ |
|
|
420 | ? SvMAGIC (sv)->mg_type == type \ |
|
|
421 | ? SvMAGIC (sv) \ |
|
|
422 | : mg_find (sv, type) \ |
|
|
423 | : 0 |
|
|
424 | |
|
|
425 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
426 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
427 | |
|
|
428 | INLINE struct coro * |
|
|
429 | SvSTATE_ (pTHX_ SV *coro) |
|
|
430 | { |
|
|
431 | HV *stash; |
|
|
432 | MAGIC *mg; |
|
|
433 | |
|
|
434 | if (SvROK (coro)) |
|
|
435 | coro = SvRV (coro); |
|
|
436 | |
|
|
437 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
438 | croak ("Coro::State object required"); |
|
|
439 | |
|
|
440 | stash = SvSTASH (coro); |
|
|
441 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
442 | { |
|
|
443 | /* very slow, but rare, check */ |
|
|
444 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
445 | croak ("Coro::State object required"); |
|
|
446 | } |
|
|
447 | |
|
|
448 | mg = CORO_MAGIC_state (coro); |
|
|
449 | return (struct coro *)mg->mg_ptr; |
|
|
450 | } |
|
|
451 | |
|
|
452 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
283 | |
453 | |
284 | /* the next two functions merely cache the padlists */ |
454 | /* the next two functions merely cache the padlists */ |
285 | STATIC void |
455 | static void |
286 | get_padlist (pTHX_ CV *cv) |
456 | get_padlist (pTHX_ CV *cv) |
287 | { |
457 | { |
288 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
458 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
459 | AV *av; |
289 | |
460 | |
290 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
461 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
291 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
462 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
292 | else |
463 | else |
|
|
464 | { |
|
|
465 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
466 | /* this is probably cleaner? but also slower! */ |
|
|
467 | /* in practise, it seems to be less stable */ |
|
|
468 | CV *cp = Perl_cv_clone (cv); |
|
|
469 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
470 | CvPADLIST (cp) = 0; |
|
|
471 | SvREFCNT_dec (cp); |
|
|
472 | #else |
293 | CvPADLIST (cv) = clone_padlist (aTHX_ CvPADLIST (cv)); |
473 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
|
|
474 | #endif |
|
|
475 | } |
294 | } |
476 | } |
295 | |
477 | |
296 | STATIC void |
478 | static void |
297 | put_padlist (pTHX_ CV *cv) |
479 | put_padlist (pTHX_ CV *cv) |
298 | { |
480 | { |
299 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
481 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
482 | AV *av; |
300 | |
483 | |
301 | if (!mg) |
484 | if (expect_false (!mg)) |
302 | { |
485 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
303 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
|
|
304 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
305 | mg->mg_virtual = &vtbl_coro; |
|
|
306 | mg->mg_obj = (SV *)newAV (); |
|
|
307 | } |
|
|
308 | |
486 | |
309 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
487 | av = (AV *)mg->mg_obj; |
310 | } |
|
|
311 | |
488 | |
312 | #define SB do { |
489 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
313 | #define SE } while (0) |
490 | av_extend (av, AvMAX (av) + 1); |
314 | |
491 | |
315 | #define LOAD(state) load_state(aTHX_ (state)); |
492 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
316 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
493 | } |
317 | |
494 | |
318 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
495 | /** load & save, init *******************************************************/ |
319 | |
496 | |
320 | static void |
497 | static void |
321 | load_state(pTHX_ Coro__State c) |
498 | load_perl (pTHX_ Coro__State c) |
322 | { |
499 | { |
323 | PL_dowarn = c->dowarn; |
500 | perl_slots *slot = c->slot; |
324 | PL_in_eval = c->in_eval; |
501 | c->slot = 0; |
325 | |
502 | |
326 | PL_curstackinfo = c->curstackinfo; |
|
|
327 | PL_curstack = c->curstack; |
|
|
328 | PL_mainstack = c->mainstack; |
503 | PL_mainstack = c->mainstack; |
329 | PL_stack_sp = c->stack_sp; |
|
|
330 | PL_op = c->op; |
|
|
331 | PL_curpad = c->curpad; |
|
|
332 | PL_comppad = c->comppad; |
|
|
333 | PL_compcv = c->compcv; |
|
|
334 | PL_stack_base = c->stack_base; |
|
|
335 | PL_stack_max = c->stack_max; |
|
|
336 | PL_tmps_stack = c->tmps_stack; |
|
|
337 | PL_tmps_floor = c->tmps_floor; |
|
|
338 | PL_tmps_ix = c->tmps_ix; |
|
|
339 | PL_tmps_max = c->tmps_max; |
|
|
340 | PL_markstack = c->markstack; |
|
|
341 | PL_markstack_ptr = c->markstack_ptr; |
|
|
342 | PL_markstack_max = c->markstack_max; |
|
|
343 | PL_scopestack = c->scopestack; |
|
|
344 | PL_scopestack_ix = c->scopestack_ix; |
|
|
345 | PL_scopestack_max = c->scopestack_max; |
|
|
346 | PL_savestack = c->savestack; |
|
|
347 | PL_savestack_ix = c->savestack_ix; |
|
|
348 | PL_savestack_max = c->savestack_max; |
|
|
349 | PL_retstack = c->retstack; |
|
|
350 | PL_retstack_ix = c->retstack_ix; |
|
|
351 | PL_retstack_max = c->retstack_max; |
|
|
352 | PL_curcop = c->curcop; |
|
|
353 | PL_top_env = c->top_env; |
|
|
354 | |
504 | |
355 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
505 | GvSV (PL_defgv) = slot->defsv; |
356 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
506 | GvAV (PL_defgv) = slot->defav; |
357 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
507 | GvSV (PL_errgv) = slot->errsv; |
|
|
508 | GvSV (irsgv) = slot->irsgv; |
|
|
509 | |
|
|
510 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
511 | # include "state.h" |
|
|
512 | #undef VAR |
358 | |
513 | |
359 | { |
514 | { |
360 | dSP; |
515 | dSP; |
|
|
516 | |
361 | CV *cv; |
517 | CV *cv; |
362 | |
518 | |
363 | /* now do the ugly restore mess */ |
519 | /* now do the ugly restore mess */ |
364 | while ((cv = (CV *)POPs)) |
520 | while (expect_true (cv = (CV *)POPs)) |
365 | { |
521 | { |
366 | AV *padlist = (AV *)POPs; |
|
|
367 | |
|
|
368 | if (padlist) |
|
|
369 | { |
|
|
370 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
522 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
371 | CvPADLIST(cv) = padlist; |
523 | CvDEPTH (cv) = PTR2IV (POPs); |
372 | } |
524 | CvPADLIST (cv) = (AV *)POPs; |
373 | |
|
|
374 | ++CvDEPTH(cv); |
|
|
375 | } |
525 | } |
376 | |
526 | |
377 | PUTBACK; |
527 | PUTBACK; |
378 | } |
528 | } |
|
|
529 | |
|
|
530 | slf_frame = c->slf_frame; |
|
|
531 | coroapi.slf_data = c->slf_data; |
379 | } |
532 | } |
380 | |
533 | |
381 | static void |
534 | static void |
382 | save_state(pTHX_ Coro__State c, int flags) |
535 | save_perl (pTHX_ Coro__State c) |
383 | { |
536 | { |
|
|
537 | c->slf_data = coroapi.slf_data; |
|
|
538 | c->slf_frame = slf_frame; |
|
|
539 | |
384 | { |
540 | { |
385 | dSP; |
541 | dSP; |
386 | I32 cxix = cxstack_ix; |
542 | I32 cxix = cxstack_ix; |
387 | PERL_CONTEXT *ccstk = cxstack; |
543 | PERL_CONTEXT *ccstk = cxstack; |
388 | PERL_SI *top_si = PL_curstackinfo; |
544 | PERL_SI *top_si = PL_curstackinfo; |
… | |
… | |
390 | /* |
546 | /* |
391 | * the worst thing you can imagine happens first - we have to save |
547 | * the worst thing you can imagine happens first - we have to save |
392 | * (and reinitialize) all cv's in the whole callchain :( |
548 | * (and reinitialize) all cv's in the whole callchain :( |
393 | */ |
549 | */ |
394 | |
550 | |
395 | PUSHs (Nullsv); |
551 | XPUSHs (Nullsv); |
396 | /* this loop was inspired by pp_caller */ |
552 | /* this loop was inspired by pp_caller */ |
397 | for (;;) |
553 | for (;;) |
398 | { |
554 | { |
399 | while (cxix >= 0) |
555 | while (expect_true (cxix >= 0)) |
400 | { |
556 | { |
401 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
557 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
402 | |
558 | |
403 | if (CxTYPE(cx) == CXt_SUB) |
559 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
404 | { |
560 | { |
405 | CV *cv = cx->blk_sub.cv; |
561 | CV *cv = cx->blk_sub.cv; |
|
|
562 | |
406 | if (CvDEPTH(cv)) |
563 | if (expect_true (CvDEPTH (cv))) |
407 | { |
564 | { |
408 | EXTEND (SP, CvDEPTH(cv)*2); |
565 | EXTEND (SP, 3); |
409 | |
|
|
410 | while (--CvDEPTH(cv)) |
|
|
411 | { |
|
|
412 | /* this tells the restore code to increment CvDEPTH */ |
|
|
413 | PUSHs (Nullsv); |
|
|
414 | PUSHs ((SV *)cv); |
|
|
415 | } |
|
|
416 | |
|
|
417 | PUSHs ((SV *)CvPADLIST(cv)); |
566 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
567 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
418 | PUSHs ((SV *)cv); |
568 | PUSHs ((SV *)cv); |
419 | |
569 | |
|
|
570 | CvDEPTH (cv) = 0; |
420 | get_padlist (aTHX_ cv); /* this is a monster */ |
571 | get_padlist (aTHX_ cv); |
421 | } |
572 | } |
422 | } |
573 | } |
423 | #ifdef CXt_FORMAT |
|
|
424 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
425 | { |
|
|
426 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
427 | /* my bold guess is as a simple, plain sub... */ |
|
|
428 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
429 | } |
|
|
430 | #endif |
|
|
431 | } |
574 | } |
432 | |
575 | |
433 | if (top_si->si_type == PERLSI_MAIN) |
576 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
434 | break; |
577 | break; |
435 | |
578 | |
436 | top_si = top_si->si_prev; |
579 | top_si = top_si->si_prev; |
437 | ccstk = top_si->si_cxstack; |
580 | ccstk = top_si->si_cxstack; |
438 | cxix = top_si->si_cxix; |
581 | cxix = top_si->si_cxix; |
439 | } |
582 | } |
440 | |
583 | |
441 | PUTBACK; |
584 | PUTBACK; |
442 | } |
585 | } |
443 | |
586 | |
444 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
587 | /* allocate some space on the context stack for our purposes */ |
445 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
588 | /* we manually unroll here, as usually 2 slots is enough */ |
446 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
589 | if (SLOT_COUNT >= 1) CXINC; |
|
|
590 | if (SLOT_COUNT >= 2) CXINC; |
|
|
591 | if (SLOT_COUNT >= 3) CXINC; |
|
|
592 | { |
|
|
593 | int i; |
|
|
594 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
595 | CXINC; |
|
|
596 | } |
|
|
597 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
447 | |
598 | |
448 | c->dowarn = PL_dowarn; |
|
|
449 | c->in_eval = PL_in_eval; |
|
|
450 | |
|
|
451 | c->curstackinfo = PL_curstackinfo; |
|
|
452 | c->curstack = PL_curstack; |
|
|
453 | c->mainstack = PL_mainstack; |
599 | c->mainstack = PL_mainstack; |
454 | c->stack_sp = PL_stack_sp; |
600 | |
455 | c->op = PL_op; |
601 | { |
456 | c->curpad = PL_curpad; |
602 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
457 | c->comppad = PL_comppad; |
603 | |
458 | c->compcv = PL_compcv; |
604 | slot->defav = GvAV (PL_defgv); |
459 | c->stack_base = PL_stack_base; |
605 | slot->defsv = DEFSV; |
460 | c->stack_max = PL_stack_max; |
606 | slot->errsv = ERRSV; |
461 | c->tmps_stack = PL_tmps_stack; |
607 | slot->irsgv = GvSV (irsgv); |
462 | c->tmps_floor = PL_tmps_floor; |
608 | |
463 | c->tmps_ix = PL_tmps_ix; |
609 | #define VAR(name,type) slot->name = PL_ ## name; |
464 | c->tmps_max = PL_tmps_max; |
610 | # include "state.h" |
465 | c->markstack = PL_markstack; |
611 | #undef VAR |
466 | c->markstack_ptr = PL_markstack_ptr; |
612 | } |
467 | c->markstack_max = PL_markstack_max; |
|
|
468 | c->scopestack = PL_scopestack; |
|
|
469 | c->scopestack_ix = PL_scopestack_ix; |
|
|
470 | c->scopestack_max = PL_scopestack_max; |
|
|
471 | c->savestack = PL_savestack; |
|
|
472 | c->savestack_ix = PL_savestack_ix; |
|
|
473 | c->savestack_max = PL_savestack_max; |
|
|
474 | c->retstack = PL_retstack; |
|
|
475 | c->retstack_ix = PL_retstack_ix; |
|
|
476 | c->retstack_max = PL_retstack_max; |
|
|
477 | c->curcop = PL_curcop; |
|
|
478 | c->top_env = PL_top_env; |
|
|
479 | } |
613 | } |
480 | |
614 | |
481 | /* |
615 | /* |
482 | * allocate various perl stacks. This is an exact copy |
616 | * allocate various perl stacks. This is almost an exact copy |
483 | * of perl.c:init_stacks, except that it uses less memory |
617 | * of perl.c:init_stacks, except that it uses less memory |
484 | * on the (sometimes correct) assumption that coroutines do |
618 | * on the (sometimes correct) assumption that coroutines do |
485 | * not usually need a lot of stackspace. |
619 | * not usually need a lot of stackspace. |
486 | */ |
620 | */ |
487 | STATIC void |
621 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
622 | # define coro_init_stacks init_stacks |
|
|
623 | #else |
|
|
624 | static void |
488 | coro_init_stacks (pTHX) |
625 | coro_init_stacks (pTHX) |
489 | { |
626 | { |
490 | LOCK; |
627 | PL_curstackinfo = new_stackinfo(32, 8); |
491 | |
|
|
492 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
493 | PL_curstackinfo->si_type = PERLSI_MAIN; |
628 | PL_curstackinfo->si_type = PERLSI_MAIN; |
494 | PL_curstack = PL_curstackinfo->si_stack; |
629 | PL_curstack = PL_curstackinfo->si_stack; |
495 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
630 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
496 | |
631 | |
497 | PL_stack_base = AvARRAY(PL_curstack); |
632 | PL_stack_base = AvARRAY(PL_curstack); |
498 | PL_stack_sp = PL_stack_base; |
633 | PL_stack_sp = PL_stack_base; |
499 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
634 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
500 | |
635 | |
501 | New(50,PL_tmps_stack,96,SV*); |
636 | New(50,PL_tmps_stack,32,SV*); |
502 | PL_tmps_floor = -1; |
637 | PL_tmps_floor = -1; |
503 | PL_tmps_ix = -1; |
638 | PL_tmps_ix = -1; |
504 | PL_tmps_max = 96; |
639 | PL_tmps_max = 32; |
505 | |
640 | |
506 | New(54,PL_markstack,16,I32); |
641 | New(54,PL_markstack,16,I32); |
507 | PL_markstack_ptr = PL_markstack; |
642 | PL_markstack_ptr = PL_markstack; |
508 | PL_markstack_max = PL_markstack + 16; |
643 | PL_markstack_max = PL_markstack + 16; |
509 | |
644 | |
510 | #ifdef SET_MARK_OFFSET |
645 | #ifdef SET_MARK_OFFSET |
511 | SET_MARK_OFFSET; |
646 | SET_MARK_OFFSET; |
512 | #endif |
647 | #endif |
513 | |
648 | |
514 | New(54,PL_scopestack,16,I32); |
649 | New(54,PL_scopestack,8,I32); |
515 | PL_scopestack_ix = 0; |
650 | PL_scopestack_ix = 0; |
516 | PL_scopestack_max = 16; |
651 | PL_scopestack_max = 8; |
517 | |
652 | |
518 | New(54,PL_savestack,96,ANY); |
653 | New(54,PL_savestack,24,ANY); |
519 | PL_savestack_ix = 0; |
654 | PL_savestack_ix = 0; |
520 | PL_savestack_max = 96; |
655 | PL_savestack_max = 24; |
521 | |
656 | |
|
|
657 | #if !PERL_VERSION_ATLEAST (5,10,0) |
522 | New(54,PL_retstack,8,OP*); |
658 | New(54,PL_retstack,4,OP*); |
523 | PL_retstack_ix = 0; |
659 | PL_retstack_ix = 0; |
524 | PL_retstack_max = 8; |
660 | PL_retstack_max = 4; |
525 | |
661 | #endif |
526 | UNLOCK; |
|
|
527 | } |
662 | } |
|
|
663 | #endif |
528 | |
664 | |
529 | /* |
665 | /* |
530 | * destroy the stacks, the callchain etc... |
666 | * destroy the stacks, the callchain etc... |
531 | */ |
667 | */ |
532 | STATIC void |
668 | static void |
533 | destroy_stacks(pTHX) |
669 | coro_destruct_stacks (pTHX) |
534 | { |
670 | { |
535 | if (!IN_DESTRUCT) |
|
|
536 | { |
|
|
537 | /* is this ugly, I ask? */ |
|
|
538 | LEAVE_SCOPE (0); |
|
|
539 | |
|
|
540 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
541 | FREETMPS; |
|
|
542 | |
|
|
543 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
544 | } |
|
|
545 | |
|
|
546 | while (PL_curstackinfo->si_next) |
671 | while (PL_curstackinfo->si_next) |
547 | PL_curstackinfo = PL_curstackinfo->si_next; |
672 | PL_curstackinfo = PL_curstackinfo->si_next; |
548 | |
673 | |
549 | while (PL_curstackinfo) |
674 | while (PL_curstackinfo) |
550 | { |
675 | { |
551 | PERL_SI *p = PL_curstackinfo->si_prev; |
676 | PERL_SI *p = PL_curstackinfo->si_prev; |
552 | |
677 | |
553 | { /*D*//*remove*/ |
|
|
554 | dSP; |
|
|
555 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
556 | PUTBACK; /* possibly superfluous */ |
|
|
557 | } |
|
|
558 | |
|
|
559 | if (!IN_DESTRUCT) |
678 | if (!IN_DESTRUCT) |
560 | { |
|
|
561 | dounwind (-1);/*D*//*remove*/ |
|
|
562 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
679 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
563 | } |
|
|
564 | |
680 | |
565 | Safefree (PL_curstackinfo->si_cxstack); |
681 | Safefree (PL_curstackinfo->si_cxstack); |
566 | Safefree (PL_curstackinfo); |
682 | Safefree (PL_curstackinfo); |
567 | PL_curstackinfo = p; |
683 | PL_curstackinfo = p; |
568 | } |
684 | } |
569 | |
685 | |
570 | Safefree (PL_tmps_stack); |
686 | Safefree (PL_tmps_stack); |
571 | Safefree (PL_markstack); |
687 | Safefree (PL_markstack); |
572 | Safefree (PL_scopestack); |
688 | Safefree (PL_scopestack); |
573 | Safefree (PL_savestack); |
689 | Safefree (PL_savestack); |
|
|
690 | #if !PERL_VERSION_ATLEAST (5,10,0) |
574 | Safefree (PL_retstack); |
691 | Safefree (PL_retstack); |
|
|
692 | #endif |
|
|
693 | } |
|
|
694 | |
|
|
695 | static size_t |
|
|
696 | coro_rss (pTHX_ struct coro *coro) |
|
|
697 | { |
|
|
698 | size_t rss = sizeof (*coro); |
|
|
699 | |
|
|
700 | if (coro->mainstack) |
|
|
701 | { |
|
|
702 | perl_slots tmp_slot; |
|
|
703 | perl_slots *slot; |
|
|
704 | |
|
|
705 | if (coro->flags & CF_RUNNING) |
|
|
706 | { |
|
|
707 | slot = &tmp_slot; |
|
|
708 | |
|
|
709 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
710 | # include "state.h" |
|
|
711 | #undef VAR |
|
|
712 | } |
|
|
713 | else |
|
|
714 | slot = coro->slot; |
|
|
715 | |
|
|
716 | if (slot) |
|
|
717 | { |
|
|
718 | rss += sizeof (slot->curstackinfo); |
|
|
719 | rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
|
|
720 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
|
|
721 | rss += slot->tmps_max * sizeof (SV *); |
|
|
722 | rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
|
|
723 | rss += slot->scopestack_max * sizeof (I32); |
|
|
724 | rss += slot->savestack_max * sizeof (ANY); |
|
|
725 | |
|
|
726 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
727 | rss += slot->retstack_max * sizeof (OP *); |
|
|
728 | #endif |
|
|
729 | } |
|
|
730 | } |
|
|
731 | |
|
|
732 | return rss; |
|
|
733 | } |
|
|
734 | |
|
|
735 | /** coroutine stack handling ************************************************/ |
|
|
736 | |
|
|
737 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
738 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
739 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
740 | |
|
|
741 | /* apparently < 5.8.8 */ |
|
|
742 | #ifndef MgPV_nolen_const |
|
|
743 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
744 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
745 | (const char*)(mg)->mg_ptr) |
|
|
746 | #endif |
|
|
747 | |
|
|
748 | /* |
|
|
749 | * This overrides the default magic get method of %SIG elements. |
|
|
750 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
751 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
752 | * readback here. |
|
|
753 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
754 | * not expecting this to actually change the hook. This is a potential problem |
|
|
755 | * when a schedule happens then, but we ignore this. |
|
|
756 | */ |
|
|
757 | static int |
|
|
758 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
759 | { |
|
|
760 | const char *s = MgPV_nolen_const (mg); |
|
|
761 | |
|
|
762 | if (*s == '_') |
|
|
763 | { |
|
|
764 | SV **svp = 0; |
|
|
765 | |
|
|
766 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
767 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
768 | |
|
|
769 | if (svp) |
|
|
770 | { |
|
|
771 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
772 | return 0; |
|
|
773 | } |
|
|
774 | } |
|
|
775 | |
|
|
776 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
777 | } |
|
|
778 | |
|
|
779 | static int |
|
|
780 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
781 | { |
|
|
782 | const char *s = MgPV_nolen_const (mg); |
|
|
783 | |
|
|
784 | if (*s == '_') |
|
|
785 | { |
|
|
786 | SV **svp = 0; |
|
|
787 | |
|
|
788 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
789 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
790 | |
|
|
791 | if (svp) |
|
|
792 | { |
|
|
793 | SV *old = *svp; |
|
|
794 | *svp = 0; |
|
|
795 | SvREFCNT_dec (old); |
|
|
796 | return 0; |
|
|
797 | } |
|
|
798 | } |
|
|
799 | |
|
|
800 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
801 | } |
|
|
802 | |
|
|
803 | static int |
|
|
804 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
805 | { |
|
|
806 | const char *s = MgPV_nolen_const (mg); |
|
|
807 | |
|
|
808 | if (*s == '_') |
|
|
809 | { |
|
|
810 | SV **svp = 0; |
|
|
811 | |
|
|
812 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
813 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
814 | |
|
|
815 | if (svp) |
|
|
816 | { |
|
|
817 | SV *old = *svp; |
|
|
818 | *svp = newSVsv (sv); |
|
|
819 | SvREFCNT_dec (old); |
|
|
820 | return 0; |
|
|
821 | } |
|
|
822 | } |
|
|
823 | |
|
|
824 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
575 | } |
825 | } |
576 | |
826 | |
577 | static void |
827 | static void |
578 | allocate_stack (Coro__State ctx, int alloc) |
828 | prepare_nop (aTHX_ struct coro_transfer_args *ta) |
579 | { |
829 | { |
580 | coro_stack *stack; |
830 | /* kind of mega-hacky, but works */ |
|
|
831 | ta->next = ta->prev = (struct coro *)ta; |
|
|
832 | } |
581 | |
833 | |
582 | New (0, stack, 1, coro_stack); |
834 | static int |
583 | |
835 | slf_check_nop (aTHX) |
584 | stack->refcnt = 1; |
836 | { |
585 | stack->usecnt = 1; |
837 | return 0; |
586 | stack->gencnt = ctx->gencnt = 0; |
|
|
587 | |
|
|
588 | if (alloc) |
|
|
589 | { |
|
|
590 | #if HAVE_MMAP |
|
|
591 | stack->ssize = 16384 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
592 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
593 | if (stack->sptr == (void *)-1) |
|
|
594 | #endif |
|
|
595 | { |
|
|
596 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
597 | stack->ssize = - (8192 * sizeof (long)); |
|
|
598 | New (0, stack->sptr, 8192, long); |
|
|
599 | } |
|
|
600 | } |
|
|
601 | else |
|
|
602 | stack->sptr = 0; |
|
|
603 | |
|
|
604 | ctx->stack = stack; |
|
|
605 | } |
838 | } |
606 | |
839 | |
607 | static void |
840 | static void |
608 | deallocate_stack (Coro__State ctx) |
841 | coro_setup (pTHX_ struct coro *coro) |
609 | { |
|
|
610 | coro_stack *stack = ctx->stack; |
|
|
611 | |
|
|
612 | ctx->stack = 0; |
|
|
613 | |
|
|
614 | if (stack) |
|
|
615 | { |
|
|
616 | if (!--stack->refcnt) |
|
|
617 | { |
|
|
618 | #ifdef HAVE_MMAP |
|
|
619 | if (stack->ssize > 0 && stack->sptr) |
|
|
620 | munmap (stack->sptr, stack->ssize); |
|
|
621 | else |
|
|
622 | #endif |
|
|
623 | Safefree (stack->sptr); |
|
|
624 | |
|
|
625 | Safefree (stack); |
|
|
626 | } |
|
|
627 | else if (ctx->gencnt == stack->gencnt) |
|
|
628 | --stack->usecnt; |
|
|
629 | } |
|
|
630 | } |
|
|
631 | |
|
|
632 | static void |
|
|
633 | setup_coro (void *arg) |
|
|
634 | { |
842 | { |
635 | /* |
843 | /* |
636 | * emulate part of the perl startup here. |
844 | * emulate part of the perl startup here. |
637 | */ |
845 | */ |
638 | dTHX; |
|
|
639 | dSP; |
|
|
640 | Coro__State ctx = (Coro__State)arg; |
|
|
641 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
|
|
642 | |
|
|
643 | coro_init_stacks (aTHX); |
846 | coro_init_stacks (aTHX); |
644 | /*PL_curcop = 0;*/ |
847 | |
645 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
848 | PL_runops = RUNOPS_DEFAULT; |
|
|
849 | PL_curcop = &PL_compiling; |
|
|
850 | PL_in_eval = EVAL_NULL; |
|
|
851 | PL_comppad = 0; |
|
|
852 | PL_curpm = 0; |
|
|
853 | PL_curpad = 0; |
|
|
854 | PL_localizing = 0; |
|
|
855 | PL_dirty = 0; |
|
|
856 | PL_restartop = 0; |
|
|
857 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
858 | PL_parser = 0; |
|
|
859 | #endif |
|
|
860 | |
|
|
861 | /* recreate the die/warn hooks */ |
|
|
862 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
863 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
864 | |
|
|
865 | GvSV (PL_defgv) = newSV (0); |
|
|
866 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
867 | GvSV (PL_errgv) = newSV (0); |
|
|
868 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
869 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
870 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
871 | |
|
|
872 | { |
|
|
873 | dSP; |
|
|
874 | UNOP myop; |
|
|
875 | |
|
|
876 | Zero (&myop, 1, UNOP); |
|
|
877 | myop.op_next = Nullop; |
|
|
878 | myop.op_flags = OPf_WANT_VOID; |
|
|
879 | |
|
|
880 | PUSHMARK (SP); |
|
|
881 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
|
|
882 | PUTBACK; |
|
|
883 | PL_op = (OP *)&myop; |
|
|
884 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
885 | SPAGAIN; |
|
|
886 | } |
|
|
887 | |
|
|
888 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
889 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
890 | */ |
|
|
891 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
892 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
893 | } |
|
|
894 | |
|
|
895 | static void |
|
|
896 | coro_destruct (pTHX_ struct coro *coro) |
|
|
897 | { |
|
|
898 | if (!IN_DESTRUCT) |
|
|
899 | { |
|
|
900 | /* restore all saved variables and stuff */ |
|
|
901 | LEAVE_SCOPE (0); |
|
|
902 | assert (PL_tmps_floor == -1); |
|
|
903 | |
|
|
904 | /* free all temporaries */ |
|
|
905 | FREETMPS; |
|
|
906 | assert (PL_tmps_ix == -1); |
|
|
907 | |
|
|
908 | /* unwind all extra stacks */ |
|
|
909 | POPSTACK_TO (PL_mainstack); |
|
|
910 | |
|
|
911 | /* unwind main stack */ |
|
|
912 | dounwind (-1); |
|
|
913 | } |
|
|
914 | |
|
|
915 | SvREFCNT_dec (GvSV (PL_defgv)); |
646 | SvREFCNT_dec (GvAV (PL_defgv)); |
916 | SvREFCNT_dec (GvAV (PL_defgv)); |
647 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
917 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
918 | SvREFCNT_dec (PL_defoutgv); |
|
|
919 | SvREFCNT_dec (PL_rs); |
|
|
920 | SvREFCNT_dec (GvSV (irsgv)); |
648 | |
921 | |
649 | SPAGAIN; |
922 | SvREFCNT_dec (PL_diehook); |
|
|
923 | SvREFCNT_dec (PL_warnhook); |
|
|
924 | |
|
|
925 | SvREFCNT_dec (coro->saved_deffh); |
|
|
926 | SvREFCNT_dec (coro->throw); |
650 | |
927 | |
651 | if (ctx->stack) |
928 | coro_destruct_stacks (aTHX); |
652 | { |
929 | } |
653 | ctx->cursp = 0; |
|
|
654 | |
930 | |
655 | PUSHMARK(SP); |
931 | INLINE void |
656 | PUTBACK; |
932 | free_coro_mortal (pTHX) |
657 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
933 | { |
658 | |
934 | if (expect_true (coro_mortal)) |
659 | if (SvTRUE (ERRSV)) |
|
|
660 | croak (NULL); |
|
|
661 | else |
|
|
662 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
663 | } |
935 | { |
664 | else |
936 | SvREFCNT_dec (coro_mortal); |
|
|
937 | coro_mortal = 0; |
665 | { |
938 | } |
666 | UNOP myop; |
939 | } |
667 | |
940 | |
668 | PL_op = (OP *)&myop; |
941 | static int |
|
|
942 | runops_trace (pTHX) |
|
|
943 | { |
|
|
944 | COP *oldcop = 0; |
|
|
945 | int oldcxix = -2; |
|
|
946 | struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
|
|
947 | coro_cctx *cctx = coro->cctx; |
669 | |
948 | |
670 | Zero(&myop, 1, UNOP); |
949 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
671 | myop.op_next = Nullop; |
|
|
672 | myop.op_flags = OPf_WANT_VOID; |
|
|
673 | |
|
|
674 | PUSHMARK(SP); |
|
|
675 | XPUSHs (sub_init); |
|
|
676 | /* |
|
|
677 | * the next line is slightly wrong, as PL_op->op_next |
|
|
678 | * is actually being executed so we skip the first op. |
|
|
679 | * that doesn't matter, though, since it is only |
|
|
680 | * pp_nextstate and we never return... |
|
|
681 | * ah yes, and I don't care anyways ;) |
|
|
682 | */ |
|
|
683 | PUTBACK; |
|
|
684 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
685 | SPAGAIN; |
|
|
686 | |
|
|
687 | ENTER; /* necessary e.g. for dounwind */ |
|
|
688 | } |
950 | { |
689 | } |
951 | PERL_ASYNC_CHECK (); |
690 | |
952 | |
691 | static void |
953 | if (cctx->flags & CC_TRACE_ALL) |
692 | continue_coro (void *arg) |
|
|
693 | { |
|
|
694 | /* |
|
|
695 | * this is a _very_ stripped down perl interpreter ;) |
|
|
696 | */ |
|
|
697 | dTHX; |
|
|
698 | Coro__State ctx = (Coro__State)arg; |
|
|
699 | JMPENV coro_start_env; |
|
|
700 | |
|
|
701 | PL_top_env = &ctx->start_env; |
|
|
702 | |
|
|
703 | ctx->cursp = 0; |
|
|
704 | PL_op = PL_op->op_next; |
|
|
705 | CALLRUNOPS(aTHX); |
|
|
706 | |
|
|
707 | abort (); |
|
|
708 | } |
|
|
709 | |
|
|
710 | STATIC void |
|
|
711 | transfer (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
712 | { |
|
|
713 | dSTACKLEVEL; |
|
|
714 | |
|
|
715 | if (prev != next) |
|
|
716 | { |
|
|
717 | if (next->mainstack) |
|
|
718 | { |
954 | { |
719 | LOCK; |
955 | if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
720 | SAVE (prev, flags); |
|
|
721 | LOAD (next); |
|
|
722 | UNLOCK; |
|
|
723 | |
|
|
724 | /* mark this state as in-use */ |
|
|
725 | next->mainstack = 0; |
|
|
726 | next->tmps_ix = -2; |
|
|
727 | |
|
|
728 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
729 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
730 | { |
956 | { |
731 | if (!prev->stack) |
957 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
732 | allocate_stack (prev, 0); |
958 | SV **bot, **top; |
733 | else if (prev->cursp != stacklevel |
959 | AV *av = newAV (); /* return values */ |
734 | && prev->stack->usecnt > 1) |
960 | SV **cb; |
|
|
961 | dSP; |
|
|
962 | |
|
|
963 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
964 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
965 | if (isGV (gv)) |
|
|
966 | gv_efullname3 (fullname, gv, 0); |
|
|
967 | |
|
|
968 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
969 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
970 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
971 | : bot; |
|
|
972 | |
|
|
973 | av_extend (av, top - bot); |
|
|
974 | while (bot < top) |
|
|
975 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
976 | |
|
|
977 | PL_runops = RUNOPS_DEFAULT; |
|
|
978 | ENTER; |
|
|
979 | SAVETMPS; |
|
|
980 | EXTEND (SP, 3); |
|
|
981 | PUSHMARK (SP); |
|
|
982 | PUSHs (&PL_sv_no); |
|
|
983 | PUSHs (fullname); |
|
|
984 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
985 | PUTBACK; |
|
|
986 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
987 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
988 | SPAGAIN; |
|
|
989 | FREETMPS; |
|
|
990 | LEAVE; |
|
|
991 | PL_runops = runops_trace; |
|
|
992 | } |
|
|
993 | |
|
|
994 | if (oldcop != PL_curcop) |
|
|
995 | { |
|
|
996 | oldcop = PL_curcop; |
|
|
997 | |
|
|
998 | if (PL_curcop != &PL_compiling) |
735 | { |
999 | { |
736 | prev->gencnt = ++prev->stack->gencnt; |
1000 | SV **cb; |
737 | prev->stack->usecnt = 1; |
|
|
738 | } |
|
|
739 | |
1001 | |
740 | /* has our stack been invalidated? */ |
1002 | if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
741 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
742 | { |
1003 | { |
743 | deallocate_stack (next); |
1004 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
744 | allocate_stack (next, 1); |
1005 | |
745 | coro_create (&(next->stack->cctx), |
1006 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
746 | continue_coro, (void *)next, |
1007 | { |
747 | next->stack->sptr, labs (next->stack->ssize)); |
1008 | runops_proc_t old_runops = PL_runops; |
|
|
1009 | dSP; |
|
|
1010 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1011 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1012 | |
|
|
1013 | if (isGV (gv)) |
|
|
1014 | gv_efullname3 (fullname, gv, 0); |
|
|
1015 | |
|
|
1016 | PL_runops = RUNOPS_DEFAULT; |
|
|
1017 | ENTER; |
|
|
1018 | SAVETMPS; |
|
|
1019 | EXTEND (SP, 3); |
|
|
1020 | PUSHMARK (SP); |
|
|
1021 | PUSHs (&PL_sv_yes); |
|
|
1022 | PUSHs (fullname); |
|
|
1023 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1024 | PUTBACK; |
|
|
1025 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1026 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1027 | SPAGAIN; |
|
|
1028 | FREETMPS; |
|
|
1029 | LEAVE; |
|
|
1030 | PL_runops = runops_trace; |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | oldcxix = cxstack_ix; |
748 | } |
1034 | } |
749 | |
1035 | |
750 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
1036 | if (cctx->flags & CC_TRACE_LINE) |
751 | prev->cursp = stacklevel; |
|
|
752 | /* don't add any code here */ |
|
|
753 | } |
|
|
754 | else |
|
|
755 | next->cursp = stacklevel; |
|
|
756 | } |
|
|
757 | else if (next->tmps_ix == -2) |
|
|
758 | croak ("tried to transfer to running coroutine"); |
|
|
759 | else |
|
|
760 | { |
|
|
761 | LOCK; |
|
|
762 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
763 | UNLOCK; |
|
|
764 | |
|
|
765 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
766 | { |
|
|
767 | if (!prev->stack) |
|
|
768 | allocate_stack (prev, 0); |
|
|
769 | |
|
|
770 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
771 | { |
1037 | { |
772 | PL_top_env = &next->start_env; |
1038 | dSP; |
773 | |
1039 | |
774 | setup_coro (next); |
1040 | PL_runops = RUNOPS_DEFAULT; |
775 | next->cursp = stacklevel; |
1041 | ENTER; |
776 | |
1042 | SAVETMPS; |
777 | prev->stack->refcnt++; |
1043 | EXTEND (SP, 3); |
778 | prev->stack->usecnt++; |
1044 | PL_runops = RUNOPS_DEFAULT; |
779 | next->stack = prev->stack; |
1045 | PUSHMARK (SP); |
780 | next->gencnt = prev->gencnt; |
1046 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1047 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1048 | PUTBACK; |
|
|
1049 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1050 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1051 | SPAGAIN; |
|
|
1052 | FREETMPS; |
|
|
1053 | LEAVE; |
|
|
1054 | PL_runops = runops_trace; |
781 | } |
1055 | } |
782 | else |
|
|
783 | { |
|
|
784 | assert (!next->stack); |
|
|
785 | allocate_stack (next, 1); |
|
|
786 | coro_create (&(next->stack->cctx), |
|
|
787 | setup_coro, (void *)next, |
|
|
788 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
789 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
790 | prev->cursp = stacklevel; |
|
|
791 | /* don't add any code here */ |
|
|
792 | } |
1056 | } |
793 | } |
1057 | } |
794 | else |
|
|
795 | { |
|
|
796 | setup_coro (next); |
|
|
797 | next->cursp = stacklevel; |
|
|
798 | } |
|
|
799 | } |
1058 | } |
800 | } |
1059 | } |
801 | |
1060 | |
|
|
1061 | TAINT_NOT; |
|
|
1062 | return 0; |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | static void |
|
|
1066 | prepare_set_stacklevel (struct coro_transfer_args *ta, struct coro_cctx *cctx) |
|
|
1067 | { |
|
|
1068 | ta->prev = (struct coro *)cctx; |
|
|
1069 | ta->next = 0; |
|
|
1070 | } |
|
|
1071 | |
|
|
1072 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
1073 | /* _cctx_init should be careful, as it could be called at almost any time */ |
|
|
1074 | /* during execution of a perl program */ |
|
|
1075 | /* also initialises PL_top_env */ |
|
|
1076 | static void NOINLINE |
|
|
1077 | cctx_prepare (pTHX_ coro_cctx *cctx) |
|
|
1078 | { |
|
|
1079 | dSP; |
|
|
1080 | UNOP myop; |
|
|
1081 | |
|
|
1082 | PL_top_env = &PL_start_env; |
|
|
1083 | |
|
|
1084 | if (cctx->flags & CC_TRACE) |
|
|
1085 | PL_runops = runops_trace; |
|
|
1086 | |
|
|
1087 | Zero (&myop, 1, UNOP); |
|
|
1088 | myop.op_next = PL_op; |
|
|
1089 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
|
|
1090 | |
|
|
1091 | PUSHMARK (SP); |
|
|
1092 | EXTEND (SP, 2); |
|
|
1093 | PUSHs (sv_2mortal (newSViv ((IV)cctx))); |
|
|
1094 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
1095 | PUTBACK; |
|
|
1096 | PL_op = (OP *)&myop; |
|
|
1097 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1098 | SPAGAIN; |
|
|
1099 | } |
|
|
1100 | |
|
|
1101 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1102 | INLINE void |
|
|
1103 | transfer_tail (pTHX) |
|
|
1104 | { |
|
|
1105 | struct coro *next = (struct coro *)transfer_next; |
|
|
1106 | assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */ |
|
|
1107 | assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next)); |
|
|
1108 | |
|
|
1109 | free_coro_mortal (aTHX); |
|
|
1110 | UNLOCK; |
|
|
1111 | |
|
|
1112 | if (expect_false (next->throw)) |
|
|
1113 | { |
|
|
1114 | SV *exception = sv_2mortal (next->throw); |
|
|
1115 | |
|
|
1116 | next->throw = 0; |
|
|
1117 | sv_setsv (ERRSV, exception); |
|
|
1118 | croak (0); |
|
|
1119 | } |
|
|
1120 | } |
|
|
1121 | |
|
|
1122 | /* |
|
|
1123 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1124 | */ |
|
|
1125 | static void |
|
|
1126 | cctx_run (void *arg) |
|
|
1127 | { |
|
|
1128 | #ifdef USE_ITHREADS |
|
|
1129 | # if CORO_PTHREAD |
|
|
1130 | PERL_SET_CONTEXT (coro_thx); |
|
|
1131 | # endif |
|
|
1132 | #endif |
|
|
1133 | { |
|
|
1134 | dTHX; |
|
|
1135 | |
|
|
1136 | /* normally we would need to skip the entersub here */ |
|
|
1137 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1138 | /* PL_nop = PL_nop->op_next */ |
|
|
1139 | |
|
|
1140 | /* inject a fake subroutine call to cctx_init */ |
|
|
1141 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
|
|
1142 | |
|
|
1143 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1144 | /* TODO: throwing an exception here might be deadly, VERIFY */ |
|
|
1145 | transfer_tail (aTHX); |
|
|
1146 | |
|
|
1147 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1148 | PL_restartop = PL_op; |
|
|
1149 | perl_run (PL_curinterp); |
|
|
1150 | |
|
|
1151 | /* |
|
|
1152 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1153 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1154 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1155 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1156 | * coroutine as Coro has no such concept |
|
|
1157 | */ |
|
|
1158 | PL_top_env = main_top_env; |
|
|
1159 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1160 | } |
|
|
1161 | } |
|
|
1162 | |
|
|
1163 | static coro_cctx * |
|
|
1164 | cctx_new () |
|
|
1165 | { |
|
|
1166 | coro_cctx *cctx; |
|
|
1167 | |
|
|
1168 | ++cctx_count; |
|
|
1169 | New (0, cctx, 1, coro_cctx); |
|
|
1170 | |
|
|
1171 | cctx->gen = cctx_gen; |
|
|
1172 | cctx->flags = 0; |
|
|
1173 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1174 | |
|
|
1175 | return cctx; |
|
|
1176 | } |
|
|
1177 | |
|
|
1178 | /* create a new cctx only suitable as source */ |
|
|
1179 | static coro_cctx * |
|
|
1180 | cctx_new_empty () |
|
|
1181 | { |
|
|
1182 | coro_cctx *cctx = cctx_new (); |
|
|
1183 | |
|
|
1184 | cctx->sptr = 0; |
|
|
1185 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1186 | |
|
|
1187 | return cctx; |
|
|
1188 | } |
|
|
1189 | |
|
|
1190 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1191 | static coro_cctx * |
|
|
1192 | cctx_new_run () |
|
|
1193 | { |
|
|
1194 | coro_cctx *cctx = cctx_new (); |
|
|
1195 | void *stack_start; |
|
|
1196 | size_t stack_size; |
|
|
1197 | |
|
|
1198 | #if HAVE_MMAP |
|
|
1199 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1200 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1201 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1202 | |
|
|
1203 | if (cctx->sptr != (void *)-1) |
|
|
1204 | { |
|
|
1205 | #if CORO_STACKGUARD |
|
|
1206 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1207 | #endif |
|
|
1208 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1209 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1210 | cctx->flags |= CC_MAPPED; |
|
|
1211 | } |
|
|
1212 | else |
|
|
1213 | #endif |
|
|
1214 | { |
|
|
1215 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1216 | New (0, cctx->sptr, cctx_stacksize, long); |
|
|
1217 | |
|
|
1218 | if (!cctx->sptr) |
|
|
1219 | { |
|
|
1220 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1221 | _exit (EXIT_FAILURE); |
|
|
1222 | } |
|
|
1223 | |
|
|
1224 | stack_start = cctx->sptr; |
|
|
1225 | stack_size = cctx->ssize; |
|
|
1226 | } |
|
|
1227 | |
|
|
1228 | #if CORO_USE_VALGRIND |
|
|
1229 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1230 | #endif |
|
|
1231 | |
|
|
1232 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1233 | |
|
|
1234 | return cctx; |
|
|
1235 | } |
|
|
1236 | |
|
|
1237 | static void |
|
|
1238 | cctx_destroy (coro_cctx *cctx) |
|
|
1239 | { |
|
|
1240 | if (!cctx) |
|
|
1241 | return; |
|
|
1242 | |
|
|
1243 | --cctx_count; |
|
|
1244 | coro_destroy (&cctx->cctx); |
|
|
1245 | |
|
|
1246 | /* coro_transfer creates new, empty cctx's */ |
|
|
1247 | if (cctx->sptr) |
|
|
1248 | { |
|
|
1249 | #if CORO_USE_VALGRIND |
|
|
1250 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1251 | #endif |
|
|
1252 | |
|
|
1253 | #if HAVE_MMAP |
|
|
1254 | if (cctx->flags & CC_MAPPED) |
|
|
1255 | munmap (cctx->sptr, cctx->ssize); |
|
|
1256 | else |
|
|
1257 | #endif |
|
|
1258 | Safefree (cctx->sptr); |
|
|
1259 | } |
|
|
1260 | |
|
|
1261 | Safefree (cctx); |
|
|
1262 | } |
|
|
1263 | |
|
|
1264 | /* wether this cctx should be destructed */ |
|
|
1265 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1266 | |
|
|
1267 | static coro_cctx * |
|
|
1268 | cctx_get (pTHX) |
|
|
1269 | { |
|
|
1270 | while (expect_true (cctx_first)) |
|
|
1271 | { |
|
|
1272 | coro_cctx *cctx = cctx_first; |
|
|
1273 | cctx_first = cctx->next; |
|
|
1274 | --cctx_idle; |
|
|
1275 | |
|
|
1276 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1277 | return cctx; |
|
|
1278 | |
|
|
1279 | cctx_destroy (cctx); |
|
|
1280 | } |
|
|
1281 | |
|
|
1282 | return cctx_new_run (); |
|
|
1283 | } |
|
|
1284 | |
|
|
1285 | static void |
|
|
1286 | cctx_put (coro_cctx *cctx) |
|
|
1287 | { |
|
|
1288 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1289 | |
|
|
1290 | /* free another cctx if overlimit */ |
|
|
1291 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1292 | { |
|
|
1293 | coro_cctx *first = cctx_first; |
|
|
1294 | cctx_first = first->next; |
|
|
1295 | --cctx_idle; |
|
|
1296 | |
|
|
1297 | cctx_destroy (first); |
|
|
1298 | } |
|
|
1299 | |
|
|
1300 | ++cctx_idle; |
|
|
1301 | cctx->next = cctx_first; |
|
|
1302 | cctx_first = cctx; |
|
|
1303 | } |
|
|
1304 | |
|
|
1305 | /** coroutine switching *****************************************************/ |
|
|
1306 | |
|
|
1307 | static void |
|
|
1308 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1309 | { |
|
|
1310 | if (expect_true (prev != next)) |
|
|
1311 | { |
|
|
1312 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1313 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
|
|
1314 | |
|
|
1315 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1316 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
1317 | |
|
|
1318 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1319 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
1320 | |
|
|
1321 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1322 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1323 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); |
|
|
1324 | #endif |
|
|
1325 | } |
|
|
1326 | } |
|
|
1327 | |
|
|
1328 | /* always use the TRANSFER macro */ |
|
|
1329 | static void NOINLINE |
|
|
1330 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1331 | { |
|
|
1332 | dSTACKLEVEL; |
|
|
1333 | |
|
|
1334 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1335 | if (expect_false (!next)) |
|
|
1336 | { |
|
|
1337 | ((coro_cctx *)prev)->idle_sp = stacklevel; |
|
|
1338 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1339 | } |
|
|
1340 | else if (expect_true (prev != next)) |
|
|
1341 | { |
|
|
1342 | coro_cctx *prev__cctx; |
|
|
1343 | |
|
|
1344 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1345 | { |
|
|
1346 | /* create a new empty/source context */ |
|
|
1347 | prev->cctx = cctx_new_empty (); |
|
|
1348 | prev->flags &= ~CF_NEW; |
|
|
1349 | prev->flags |= CF_RUNNING; |
|
|
1350 | } |
|
|
1351 | |
|
|
1352 | prev->flags &= ~CF_RUNNING; |
|
|
1353 | next->flags |= CF_RUNNING; |
|
|
1354 | |
|
|
1355 | LOCK; |
|
|
1356 | |
|
|
1357 | /* first get rid of the old state */ |
|
|
1358 | save_perl (aTHX_ prev); |
|
|
1359 | |
|
|
1360 | if (expect_false (next->flags & CF_NEW)) |
|
|
1361 | { |
|
|
1362 | /* need to start coroutine */ |
|
|
1363 | next->flags &= ~CF_NEW; |
|
|
1364 | /* setup coroutine call */ |
|
|
1365 | coro_setup (aTHX_ next); |
|
|
1366 | } |
|
|
1367 | else |
|
|
1368 | load_perl (aTHX_ next); |
|
|
1369 | |
|
|
1370 | prev__cctx = prev->cctx; |
|
|
1371 | |
|
|
1372 | /* possibly untie and reuse the cctx */ |
|
|
1373 | if (expect_true ( |
|
|
1374 | prev__cctx->idle_sp == stacklevel |
|
|
1375 | && !(prev__cctx->flags & CC_TRACE) |
|
|
1376 | && !force_cctx |
|
|
1377 | )) |
|
|
1378 | { |
|
|
1379 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1380 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
|
|
1381 | |
|
|
1382 | prev->cctx = 0; |
|
|
1383 | |
|
|
1384 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
|
|
1385 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
|
|
1386 | if (expect_false (CCTX_EXPIRED (prev__cctx))) |
|
|
1387 | if (!next->cctx) |
|
|
1388 | next->cctx = cctx_get (aTHX); |
|
|
1389 | |
|
|
1390 | cctx_put (prev__cctx); |
|
|
1391 | } |
|
|
1392 | |
|
|
1393 | ++next->usecount; |
|
|
1394 | |
|
|
1395 | if (expect_true (!next->cctx)) |
|
|
1396 | next->cctx = cctx_get (aTHX); |
|
|
1397 | |
|
|
1398 | assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next)); |
|
|
1399 | transfer_next = next; |
|
|
1400 | |
|
|
1401 | if (expect_false (prev__cctx != next->cctx)) |
|
|
1402 | { |
|
|
1403 | prev__cctx->top_env = PL_top_env; |
|
|
1404 | PL_top_env = next->cctx->top_env; |
|
|
1405 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
1406 | } |
|
|
1407 | |
|
|
1408 | transfer_tail (aTHX); |
|
|
1409 | } |
|
|
1410 | } |
|
|
1411 | |
|
|
1412 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1413 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1414 | |
|
|
1415 | /** high level stuff ********************************************************/ |
|
|
1416 | |
|
|
1417 | static int |
|
|
1418 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1419 | { |
|
|
1420 | if (coro->flags & CF_DESTROYED) |
|
|
1421 | return 0; |
|
|
1422 | |
|
|
1423 | coro->flags |= CF_DESTROYED; |
|
|
1424 | |
|
|
1425 | if (coro->flags & CF_READY) |
|
|
1426 | { |
|
|
1427 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1428 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1429 | LOCK; |
|
|
1430 | --coro_nready; |
|
|
1431 | UNLOCK; |
|
|
1432 | } |
|
|
1433 | else |
|
|
1434 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1435 | |
|
|
1436 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
1437 | { |
|
|
1438 | struct coro temp; |
|
|
1439 | |
|
|
1440 | if (coro->flags & CF_RUNNING) |
|
|
1441 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
1442 | |
|
|
1443 | save_perl (aTHX_ &temp); |
|
|
1444 | load_perl (aTHX_ coro); |
|
|
1445 | |
|
|
1446 | coro_destruct (aTHX_ coro); |
|
|
1447 | |
|
|
1448 | load_perl (aTHX_ &temp); |
|
|
1449 | |
|
|
1450 | coro->slot = 0; |
|
|
1451 | } |
|
|
1452 | |
|
|
1453 | cctx_destroy (coro->cctx); |
|
|
1454 | SvREFCNT_dec (coro->args); |
|
|
1455 | |
|
|
1456 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1457 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1458 | if (coro == coro_first) coro_first = coro->next; |
|
|
1459 | |
|
|
1460 | return 1; |
|
|
1461 | } |
|
|
1462 | |
|
|
1463 | static int |
|
|
1464 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1465 | { |
|
|
1466 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1467 | mg->mg_ptr = 0; |
|
|
1468 | |
|
|
1469 | coro->hv = 0; |
|
|
1470 | |
|
|
1471 | if (--coro->refcnt < 0) |
|
|
1472 | { |
|
|
1473 | coro_state_destroy (aTHX_ coro); |
|
|
1474 | Safefree (coro); |
|
|
1475 | } |
|
|
1476 | |
|
|
1477 | return 0; |
|
|
1478 | } |
|
|
1479 | |
|
|
1480 | static int |
|
|
1481 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1482 | { |
|
|
1483 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1484 | |
|
|
1485 | ++coro->refcnt; |
|
|
1486 | |
|
|
1487 | return 0; |
|
|
1488 | } |
|
|
1489 | |
|
|
1490 | static MGVTBL coro_state_vtbl = { |
|
|
1491 | 0, 0, 0, 0, |
|
|
1492 | coro_state_free, |
|
|
1493 | 0, |
|
|
1494 | #ifdef MGf_DUP |
|
|
1495 | coro_state_dup, |
|
|
1496 | #else |
|
|
1497 | # define MGf_DUP 0 |
|
|
1498 | #endif |
|
|
1499 | }; |
|
|
1500 | |
|
|
1501 | static void |
|
|
1502 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1503 | { |
|
|
1504 | ta->prev = SvSTATE (prev_sv); |
|
|
1505 | ta->next = SvSTATE (next_sv); |
|
|
1506 | TRANSFER_CHECK (*ta); |
|
|
1507 | } |
|
|
1508 | |
|
|
1509 | static void |
|
|
1510 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1511 | { |
|
|
1512 | struct coro_transfer_args ta; |
|
|
1513 | |
|
|
1514 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1515 | TRANSFER (ta, 1); |
|
|
1516 | } |
|
|
1517 | |
|
|
1518 | /** Coro ********************************************************************/ |
|
|
1519 | |
|
|
1520 | static void |
|
|
1521 | coro_enq (pTHX_ SV *coro_sv) |
|
|
1522 | { |
|
|
1523 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
|
|
1524 | } |
|
|
1525 | |
|
|
1526 | static SV * |
|
|
1527 | coro_deq (pTHX) |
|
|
1528 | { |
|
|
1529 | int prio; |
|
|
1530 | |
|
|
1531 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
|
|
1532 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1533 | return av_shift (coro_ready [prio]); |
|
|
1534 | |
|
|
1535 | return 0; |
|
|
1536 | } |
|
|
1537 | |
|
|
1538 | static int |
|
|
1539 | api_ready (pTHX_ SV *coro_sv) |
|
|
1540 | { |
|
|
1541 | struct coro *coro; |
|
|
1542 | SV *sv_hook; |
|
|
1543 | void (*xs_hook)(void); |
|
|
1544 | |
|
|
1545 | if (SvROK (coro_sv)) |
|
|
1546 | coro_sv = SvRV (coro_sv); |
|
|
1547 | |
|
|
1548 | coro = SvSTATE (coro_sv); |
|
|
1549 | |
|
|
1550 | if (coro->flags & CF_READY) |
|
|
1551 | return 0; |
|
|
1552 | |
|
|
1553 | coro->flags |= CF_READY; |
|
|
1554 | |
802 | LOCK; |
1555 | LOCK; |
803 | if (coro_mortal) |
1556 | |
804 | { |
1557 | sv_hook = coro_nready ? 0 : coro_readyhook; |
805 | SvREFCNT_dec (coro_mortal); |
1558 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
806 | coro_mortal = 0; |
1559 | |
807 | } |
1560 | coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); |
|
|
1561 | ++coro_nready; |
|
|
1562 | |
808 | UNLOCK; |
1563 | UNLOCK; |
809 | } |
1564 | |
|
|
1565 | if (sv_hook) |
|
|
1566 | { |
|
|
1567 | dSP; |
810 | |
1568 | |
811 | #define SV_CORO(sv,func) \ |
1569 | ENTER; |
812 | do { \ |
1570 | SAVETMPS; |
813 | if (SvROK (sv)) \ |
|
|
814 | sv = SvRV (sv); \ |
|
|
815 | \ |
|
|
816 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
817 | { \ |
|
|
818 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
819 | \ |
|
|
820 | if (!he) \ |
|
|
821 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
822 | \ |
|
|
823 | (sv) = SvRV (HeVAL(he)); \ |
|
|
824 | } \ |
|
|
825 | \ |
|
|
826 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
827 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
828 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
829 | \ |
|
|
830 | } while(0) |
|
|
831 | |
1571 | |
832 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
1572 | PUSHMARK (SP); |
|
|
1573 | PUTBACK; |
|
|
1574 | call_sv (sv_hook, G_DISCARD); |
|
|
1575 | SPAGAIN; |
|
|
1576 | |
|
|
1577 | FREETMPS; |
|
|
1578 | LEAVE; |
|
|
1579 | } |
|
|
1580 | |
|
|
1581 | if (xs_hook) |
|
|
1582 | xs_hook (); |
|
|
1583 | |
|
|
1584 | return 1; |
|
|
1585 | } |
|
|
1586 | |
|
|
1587 | static int |
|
|
1588 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1589 | { |
|
|
1590 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1591 | } |
|
|
1592 | |
|
|
1593 | INLINE void |
|
|
1594 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1595 | { |
|
|
1596 | SV *prev_sv, *next_sv; |
|
|
1597 | |
|
|
1598 | for (;;) |
|
|
1599 | { |
|
|
1600 | LOCK; |
|
|
1601 | next_sv = coro_deq (aTHX); |
|
|
1602 | |
|
|
1603 | /* nothing to schedule: call the idle handler */ |
|
|
1604 | if (expect_false (!next_sv)) |
|
|
1605 | { |
|
|
1606 | dSP; |
|
|
1607 | UNLOCK; |
|
|
1608 | |
|
|
1609 | ENTER; |
|
|
1610 | SAVETMPS; |
|
|
1611 | |
|
|
1612 | PUSHMARK (SP); |
|
|
1613 | PUTBACK; |
|
|
1614 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1615 | SPAGAIN; |
|
|
1616 | |
|
|
1617 | FREETMPS; |
|
|
1618 | LEAVE; |
|
|
1619 | continue; |
|
|
1620 | } |
|
|
1621 | |
|
|
1622 | ta->next = SvSTATE (next_sv); |
|
|
1623 | |
|
|
1624 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1625 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
|
|
1626 | { |
|
|
1627 | UNLOCK; |
|
|
1628 | SvREFCNT_dec (next_sv); |
|
|
1629 | /* coro_nready has already been taken care of by destroy */ |
|
|
1630 | continue; |
|
|
1631 | } |
|
|
1632 | |
|
|
1633 | --coro_nready; |
|
|
1634 | UNLOCK; |
|
|
1635 | break; |
|
|
1636 | } |
|
|
1637 | |
|
|
1638 | /* free this only after the transfer */ |
|
|
1639 | prev_sv = SvRV (coro_current); |
|
|
1640 | ta->prev = SvSTATE (prev_sv); |
|
|
1641 | TRANSFER_CHECK (*ta); |
|
|
1642 | assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
|
|
1643 | ta->next->flags &= ~CF_READY; |
|
|
1644 | SvRV_set (coro_current, next_sv); |
|
|
1645 | |
|
|
1646 | LOCK; |
|
|
1647 | free_coro_mortal (aTHX); |
|
|
1648 | coro_mortal = prev_sv; |
|
|
1649 | UNLOCK; |
|
|
1650 | } |
|
|
1651 | |
|
|
1652 | INLINE void |
|
|
1653 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1654 | { |
|
|
1655 | api_ready (aTHX_ coro_current); |
|
|
1656 | prepare_schedule (aTHX_ ta); |
|
|
1657 | } |
|
|
1658 | |
|
|
1659 | INLINE void |
|
|
1660 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1661 | { |
|
|
1662 | SV *prev = SvRV (coro_current); |
|
|
1663 | |
|
|
1664 | if (coro_nready) |
|
|
1665 | { |
|
|
1666 | prepare_schedule (aTHX_ ta); |
|
|
1667 | api_ready (aTHX_ prev); |
|
|
1668 | } |
|
|
1669 | else |
|
|
1670 | prepare_nop (aTHX_ ta); |
|
|
1671 | } |
833 | |
1672 | |
834 | static void |
1673 | static void |
835 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
1674 | api_schedule (pTHX) |
836 | { |
1675 | { |
837 | SV_CORO (prev, "Coro::transfer"); |
1676 | struct coro_transfer_args ta; |
838 | SV_CORO (next, "Coro::transfer"); |
|
|
839 | |
1677 | |
840 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1678 | prepare_schedule (aTHX_ &ta); |
|
|
1679 | TRANSFER (ta, 1); |
841 | } |
1680 | } |
842 | |
1681 | |
843 | /** Coro ********************************************************************/ |
1682 | static int |
|
|
1683 | api_cede (pTHX) |
|
|
1684 | { |
|
|
1685 | struct coro_transfer_args ta; |
844 | |
1686 | |
845 | #define PRIO_MAX 3 |
1687 | prepare_cede (aTHX_ &ta); |
846 | #define PRIO_HIGH 1 |
|
|
847 | #define PRIO_NORMAL 0 |
|
|
848 | #define PRIO_LOW -1 |
|
|
849 | #define PRIO_IDLE -3 |
|
|
850 | #define PRIO_MIN -4 |
|
|
851 | |
1688 | |
852 | /* for Coro.pm */ |
1689 | if (expect_true (ta.prev != ta.next)) |
853 | static GV *coro_current, *coro_idle; |
1690 | { |
854 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
1691 | TRANSFER (ta, 1); |
855 | static int coro_nready; |
1692 | return 1; |
|
|
1693 | } |
|
|
1694 | else |
|
|
1695 | return 0; |
|
|
1696 | } |
|
|
1697 | |
|
|
1698 | static int |
|
|
1699 | api_cede_notself (pTHX) |
|
|
1700 | { |
|
|
1701 | if (coro_nready) |
|
|
1702 | { |
|
|
1703 | struct coro_transfer_args ta; |
|
|
1704 | |
|
|
1705 | prepare_cede_notself (aTHX_ &ta); |
|
|
1706 | TRANSFER (ta, 1); |
|
|
1707 | return 1; |
|
|
1708 | } |
|
|
1709 | else |
|
|
1710 | return 0; |
|
|
1711 | } |
856 | |
1712 | |
857 | static void |
1713 | static void |
858 | coro_enq (pTHX_ SV *sv) |
1714 | api_trace (pTHX_ SV *coro_sv, int flags) |
859 | { |
1715 | { |
860 | if (SvTYPE (sv) == SVt_PVHV) |
1716 | struct coro *coro = SvSTATE (coro_sv); |
861 | { |
|
|
862 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
863 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
864 | |
1717 | |
865 | prio = prio > PRIO_MAX ? PRIO_MAX |
1718 | if (flags & CC_TRACE) |
866 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
867 | : prio; |
|
|
868 | |
|
|
869 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
870 | coro_nready++; |
|
|
871 | |
|
|
872 | return; |
|
|
873 | } |
1719 | { |
|
|
1720 | if (!coro->cctx) |
|
|
1721 | coro->cctx = cctx_new_run (); |
|
|
1722 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1723 | croak ("cannot enable tracing on coroutine with custom stack"); |
874 | |
1724 | |
875 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
1725 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1726 | } |
|
|
1727 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1728 | { |
|
|
1729 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1730 | |
|
|
1731 | if (coro->flags & CF_RUNNING) |
|
|
1732 | PL_runops = RUNOPS_DEFAULT; |
|
|
1733 | else |
|
|
1734 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1735 | } |
|
|
1736 | } |
|
|
1737 | |
|
|
1738 | #if 0 |
|
|
1739 | static int |
|
|
1740 | coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1741 | { |
|
|
1742 | AV *padlist; |
|
|
1743 | AV *av = (AV *)mg->mg_obj; |
|
|
1744 | |
|
|
1745 | abort (); |
|
|
1746 | |
|
|
1747 | return 0; |
|
|
1748 | } |
|
|
1749 | |
|
|
1750 | static MGVTBL coro_gensub_vtbl = { |
|
|
1751 | 0, 0, 0, 0, |
|
|
1752 | coro_gensub_free |
|
|
1753 | }; |
|
|
1754 | #endif |
|
|
1755 | |
|
|
1756 | /*****************************************************************************/ |
|
|
1757 | /* PerlIO::cede */ |
|
|
1758 | |
|
|
1759 | typedef struct |
|
|
1760 | { |
|
|
1761 | PerlIOBuf base; |
|
|
1762 | NV next, every; |
|
|
1763 | } PerlIOCede; |
|
|
1764 | |
|
|
1765 | static IV |
|
|
1766 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
1767 | { |
|
|
1768 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1769 | |
|
|
1770 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
1771 | self->next = nvtime () + self->every; |
|
|
1772 | |
|
|
1773 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
876 | } |
1774 | } |
877 | |
1775 | |
878 | static SV * |
1776 | static SV * |
879 | coro_deq (pTHX_ int min_prio) |
1777 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
880 | { |
1778 | { |
881 | int prio = PRIO_MAX - PRIO_MIN; |
1779 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
882 | |
1780 | |
883 | min_prio -= PRIO_MIN; |
1781 | return newSVnv (self->every); |
884 | if (min_prio < 0) |
1782 | } |
885 | min_prio = 0; |
|
|
886 | |
1783 | |
887 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1784 | static IV |
888 | if (av_len (coro_ready[prio]) >= 0) |
1785 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
1786 | { |
|
|
1787 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1788 | double now = nvtime (); |
|
|
1789 | |
|
|
1790 | if (now >= self->next) |
|
|
1791 | { |
|
|
1792 | api_cede (aTHX); |
|
|
1793 | self->next = now + self->every; |
|
|
1794 | } |
|
|
1795 | |
|
|
1796 | return PerlIOBuf_flush (aTHX_ f); |
|
|
1797 | } |
|
|
1798 | |
|
|
1799 | static PerlIO_funcs PerlIO_cede = |
|
|
1800 | { |
|
|
1801 | sizeof(PerlIO_funcs), |
|
|
1802 | "cede", |
|
|
1803 | sizeof(PerlIOCede), |
|
|
1804 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
1805 | PerlIOCede_pushed, |
|
|
1806 | PerlIOBuf_popped, |
|
|
1807 | PerlIOBuf_open, |
|
|
1808 | PerlIOBase_binmode, |
|
|
1809 | PerlIOCede_getarg, |
|
|
1810 | PerlIOBase_fileno, |
|
|
1811 | PerlIOBuf_dup, |
|
|
1812 | PerlIOBuf_read, |
|
|
1813 | PerlIOBuf_unread, |
|
|
1814 | PerlIOBuf_write, |
|
|
1815 | PerlIOBuf_seek, |
|
|
1816 | PerlIOBuf_tell, |
|
|
1817 | PerlIOBuf_close, |
|
|
1818 | PerlIOCede_flush, |
|
|
1819 | PerlIOBuf_fill, |
|
|
1820 | PerlIOBase_eof, |
|
|
1821 | PerlIOBase_error, |
|
|
1822 | PerlIOBase_clearerr, |
|
|
1823 | PerlIOBase_setlinebuf, |
|
|
1824 | PerlIOBuf_get_base, |
|
|
1825 | PerlIOBuf_bufsiz, |
|
|
1826 | PerlIOBuf_get_ptr, |
|
|
1827 | PerlIOBuf_get_cnt, |
|
|
1828 | PerlIOBuf_set_ptrcnt, |
|
|
1829 | }; |
|
|
1830 | |
|
|
1831 | /*****************************************************************************/ |
|
|
1832 | |
|
|
1833 | static const CV *slf_cv; /* for quick consistency check */ |
|
|
1834 | |
|
|
1835 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1836 | static SV *slf_arg0; |
|
|
1837 | static SV *slf_arg1; |
|
|
1838 | |
|
|
1839 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1840 | /* recreate the stack frame as perl will on following calls */ |
|
|
1841 | /* since entersub cleared the stack */ |
|
|
1842 | static OP * |
|
|
1843 | pp_restore (pTHX) |
|
|
1844 | { |
|
|
1845 | dSP; |
|
|
1846 | |
|
|
1847 | PUSHMARK (SP); |
|
|
1848 | |
|
|
1849 | EXTEND (SP, 3); |
|
|
1850 | if (slf_arg0) PUSHs (sv_2mortal (slf_arg0)); |
|
|
1851 | if (slf_arg1) PUSHs (sv_2mortal (slf_arg1)); |
|
|
1852 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1853 | |
|
|
1854 | RETURNOP (slf_restore.op_first); |
|
|
1855 | } |
|
|
1856 | |
|
|
1857 | static void |
|
|
1858 | slf_init_set_stacklevel (pTHX_ SV **arg, int items) |
|
|
1859 | { |
|
|
1860 | assert (("FATAL: set_stacklevel needs the coro cctx as sole argument", items == 1)); |
|
|
1861 | CORO_SLF_DATA = (void *)SvIV (arg [0]); |
|
|
1862 | } |
|
|
1863 | |
|
|
1864 | static void |
|
|
1865 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1866 | { |
|
|
1867 | prepare_set_stacklevel (ta, (struct coro_cctx *)CORO_SLF_DATA); |
|
|
1868 | } |
|
|
1869 | |
|
|
1870 | static void |
|
|
1871 | slf_init_transfer (pTHX_ SV **arg, int items) |
|
|
1872 | { |
|
|
1873 | if (items != 2) |
|
|
1874 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items); |
|
|
1875 | |
|
|
1876 | CORO_SLF_DATA = (void *)arg; /* let's hope it will stay valid */ |
|
|
1877 | } |
|
|
1878 | |
|
|
1879 | static void |
|
|
1880 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1881 | { |
|
|
1882 | SV **arg = (SV **)CORO_SLF_DATA; |
|
|
1883 | |
|
|
1884 | prepare_transfer (ta, arg [0], arg [1]); |
|
|
1885 | } |
|
|
1886 | |
|
|
1887 | static void |
|
|
1888 | slf_init_nop (pTHX_ SV **arg, int items) |
|
|
1889 | { |
|
|
1890 | } |
|
|
1891 | |
|
|
1892 | /* slf_prepare_schedule == prepare_schedule */ |
|
|
1893 | /* slf_prepare_cede == prepare_cede */ |
|
|
1894 | /* slf_prepare_notself == prepare_notself */ |
|
|
1895 | |
|
|
1896 | /* we hijack an hopefully unused CV flag for our purposes */ |
|
|
1897 | #define CVf_SLF 0x4000 |
|
|
1898 | |
|
|
1899 | /* |
|
|
1900 | * these not obviously related functions are all rolled into one |
|
|
1901 | * function to increase chances that they all will call transfer with the same |
|
|
1902 | * stack offset |
|
|
1903 | * SLF stands for "schedule-like-function". |
|
|
1904 | */ |
|
|
1905 | static OP * |
|
|
1906 | pp_slf (pTHX) |
|
|
1907 | { |
|
|
1908 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1909 | |
|
|
1910 | if (expect_true (!slf_frame.prepare)) |
|
|
1911 | { |
|
|
1912 | /* first iteration */ |
|
|
1913 | dSP; |
|
|
1914 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1915 | int items = SP - arg; /* args without function object */ |
|
|
1916 | SV *gv = *sp; |
|
|
1917 | struct CoroSLF *slf; |
|
|
1918 | |
|
|
1919 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1920 | /* for us, divert to the real entersub */ |
|
|
1921 | if (SvTYPE (gv) != SVt_PVGV || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1922 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1923 | |
|
|
1924 | /* pop args */ |
|
|
1925 | SP = PL_stack_base + POPMARK; |
|
|
1926 | |
|
|
1927 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1928 | { |
|
|
1929 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1930 | AV *av = GvAV (PL_defgv); |
|
|
1931 | arg = AvARRAY (av); |
|
|
1932 | items = AvFILLp (av) + 1; |
|
|
1933 | } |
|
|
1934 | |
|
|
1935 | PUTBACK; |
|
|
1936 | |
|
|
1937 | slf = (struct CoroSLF *)CvXSUBANY (GvCV (gv)).any_ptr; |
|
|
1938 | slf_frame.prepare = slf->prepare; |
|
|
1939 | slf_frame.check = slf->check; |
|
|
1940 | slf->init (aTHX_ arg, items); |
|
|
1941 | } |
|
|
1942 | |
|
|
1943 | /* now interpret the slf_frame */ |
|
|
1944 | /* we use a callback system not to make the code needlessly */ |
|
|
1945 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1946 | |
|
|
1947 | do |
|
|
1948 | { |
|
|
1949 | struct coro_transfer_args ta; |
|
|
1950 | |
|
|
1951 | slf_frame.prepare (aTHX_ &ta); |
|
|
1952 | TRANSFER (ta, 0); |
|
|
1953 | |
|
|
1954 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1955 | } |
|
|
1956 | while (slf_frame.check (aTHX)); |
|
|
1957 | |
|
|
1958 | { |
|
|
1959 | dSP; |
|
|
1960 | SV **bot = PL_stack_base + checkmark; |
|
|
1961 | int gimme = GIMME_V; |
|
|
1962 | |
|
|
1963 | slf_frame.prepare = 0; /* signal pp_slf that we need a new frame */ |
|
|
1964 | |
|
|
1965 | /* make sure we put something on the stack in scalar context */ |
|
|
1966 | if (gimme == G_SCALAR) |
889 | { |
1967 | { |
890 | coro_nready--; |
1968 | if (sp == bot) |
891 | return av_shift (coro_ready[prio]); |
1969 | XPUSHs (&PL_sv_undef); |
|
|
1970 | |
|
|
1971 | SP = bot + 1; |
892 | } |
1972 | } |
893 | |
1973 | |
894 | return 0; |
1974 | PUTBACK; |
|
|
1975 | } |
|
|
1976 | |
|
|
1977 | return NORMAL; |
895 | } |
1978 | } |
896 | |
1979 | |
897 | static void |
1980 | static void |
898 | api_ready (SV *coro) |
1981 | api_execute_slf (pTHX_ CV *cv, const struct CoroSLF *slf, SV **arg, int items) |
899 | { |
1982 | { |
900 | dTHX; |
1983 | assert (("FATAL: SLF call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_slf)); |
|
|
1984 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
901 | |
1985 | |
902 | if (SvROK (coro)) |
1986 | if (items > 2) |
903 | coro = SvRV (coro); |
1987 | croak ("Coro only supports a max of two arguments to SLF functions."); |
904 | |
1988 | |
905 | LOCK; |
1989 | CvFLAGS (cv) |= CVf_SLF; |
906 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
1990 | CvXSUBANY (cv).any_ptr = (void *)slf; |
907 | UNLOCK; |
1991 | slf_cv = cv; |
908 | } |
|
|
909 | |
1992 | |
910 | static void |
1993 | /* we patch the op, and then re-run the whole call */ |
911 | api_schedule (void) |
1994 | /* we have to put the same argument on the stack for this to work */ |
912 | { |
1995 | /* and this will be done by pp_restore */ |
913 | dTHX; |
1996 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
1997 | slf_restore.op_type = OP_NULL; |
|
|
1998 | slf_restore.op_ppaddr = pp_restore; |
|
|
1999 | slf_restore.op_first = PL_op; |
914 | |
2000 | |
915 | SV *prev, *next; |
2001 | slf_arg0 = items > 0 ? SvREFCNT_inc (arg [0]) : 0; |
|
|
2002 | slf_arg1 = items > 1 ? SvREFCNT_inc (arg [1]) : 0; |
916 | |
2003 | |
917 | LOCK; |
2004 | PL_op->op_ppaddr = pp_slf; |
918 | |
2005 | |
919 | prev = SvRV (GvSV (coro_current)); |
2006 | PL_op = (OP *)&slf_restore; |
920 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
921 | |
|
|
922 | if (!next) |
|
|
923 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
|
|
924 | |
|
|
925 | /* free this only after the transfer */ |
|
|
926 | coro_mortal = prev; |
|
|
927 | SV_CORO (prev, "Coro::schedule"); |
|
|
928 | |
|
|
929 | SvRV (GvSV (coro_current)) = next; |
|
|
930 | |
|
|
931 | SV_CORO (next, "Coro::schedule"); |
|
|
932 | |
|
|
933 | UNLOCK; |
|
|
934 | |
|
|
935 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
936 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
937 | } |
2007 | } |
938 | |
2008 | |
939 | static void |
|
|
940 | api_cede (void) |
|
|
941 | { |
|
|
942 | dTHX; |
|
|
943 | |
|
|
944 | LOCK; |
|
|
945 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
|
|
946 | UNLOCK; |
|
|
947 | |
|
|
948 | api_schedule (); |
|
|
949 | } |
|
|
950 | |
|
|
951 | MODULE = Coro::State PACKAGE = Coro::State |
2009 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
952 | |
2010 | |
953 | PROTOTYPES: ENABLE |
2011 | PROTOTYPES: DISABLE |
954 | |
2012 | |
955 | BOOT: |
2013 | BOOT: |
956 | { /* {} necessary for stoopid perl-5.6.x */ |
2014 | { |
957 | #ifdef USE_ITHREADS |
2015 | #ifdef USE_ITHREADS |
958 | MUTEX_INIT (&coro_mutex); |
2016 | MUTEX_INIT (&coro_lock); |
|
|
2017 | # if CORO_PTHREAD |
|
|
2018 | coro_thx = PERL_GET_CONTEXT; |
959 | #endif |
2019 | # endif |
|
|
2020 | #endif |
|
|
2021 | BOOT_PAGESIZE; |
960 | |
2022 | |
961 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2023 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
962 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2024 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
2025 | |
|
|
2026 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
2027 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
2028 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
2029 | |
|
|
2030 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
2031 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
2032 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
2033 | |
963 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2034 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
964 | |
2035 | |
965 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
2036 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
966 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
2037 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
967 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
2038 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
968 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
2039 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
969 | |
2040 | |
970 | main_mainstack = PL_mainstack; |
2041 | main_mainstack = PL_mainstack; |
|
|
2042 | main_top_env = PL_top_env; |
971 | |
2043 | |
|
|
2044 | while (main_top_env->je_prev) |
|
|
2045 | main_top_env = main_top_env->je_prev; |
|
|
2046 | |
972 | coroapi.ver = CORO_API_VERSION; |
2047 | coroapi.ver = CORO_API_VERSION; |
|
|
2048 | coroapi.rev = CORO_API_REVISION; |
973 | coroapi.transfer = api_transfer; |
2049 | coroapi.transfer = api_transfer; |
974 | } |
2050 | coroapi.execute_slf = api_execute_slf; |
|
|
2051 | coroapi.sv_state = SvSTATE_; |
975 | |
2052 | |
976 | Coro::State |
2053 | { |
977 | _newprocess(args) |
2054 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
978 | SV * args |
2055 | |
979 | PROTOTYPE: $ |
2056 | if (!svp) croak ("Time::HiRes is required"); |
|
|
2057 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
2058 | |
|
|
2059 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
2060 | } |
|
|
2061 | |
|
|
2062 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
2063 | } |
|
|
2064 | |
|
|
2065 | SV * |
|
|
2066 | new (char *klass, ...) |
980 | CODE: |
2067 | CODE: |
981 | Coro__State coro; |
2068 | { |
|
|
2069 | struct coro *coro; |
|
|
2070 | MAGIC *mg; |
|
|
2071 | HV *hv; |
|
|
2072 | int i; |
982 | |
2073 | |
983 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
984 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
985 | |
|
|
986 | Newz (0, coro, 1, struct coro); |
2074 | Newz (0, coro, 1, struct coro); |
|
|
2075 | coro->args = newAV (); |
|
|
2076 | coro->flags = CF_NEW; |
987 | |
2077 | |
988 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
2078 | if (coro_first) coro_first->prev = coro; |
989 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
2079 | coro->next = coro_first; |
990 | /*coro->stack = 0;*/ |
2080 | coro_first = coro; |
991 | |
2081 | |
992 | /* same as JMPENV_BOOTSTRAP */ |
2082 | coro->hv = hv = newHV (); |
993 | /* we might be able to recycle start_env, but safe is safe */ |
2083 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
994 | /*Zero(&coro->start_env, 1, JMPENV);*/ |
2084 | mg->mg_flags |= MGf_DUP; |
995 | coro->start_env.je_ret = -1; |
2085 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
996 | coro->start_env.je_mustcatch = TRUE; |
|
|
997 | |
2086 | |
998 | RETVAL = coro; |
2087 | av_extend (coro->args, items - 1); |
|
|
2088 | for (i = 1; i < items; i++) |
|
|
2089 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2090 | } |
999 | OUTPUT: |
2091 | OUTPUT: |
1000 | RETVAL |
2092 | RETVAL |
1001 | |
2093 | |
1002 | void |
2094 | void |
1003 | transfer(prev, next, flags) |
2095 | _set_stacklevel (...) |
1004 | SV *prev |
2096 | CODE: |
1005 | SV *next |
2097 | { |
1006 | int flags |
2098 | static struct CoroSLF slf = { slf_init_set_stacklevel, slf_prepare_set_stacklevel, slf_check_nop }; |
1007 | PROTOTYPE: @ |
2099 | api_execute_slf (aTHX_ cv, &slf, &ST (0), items); |
1008 | CODE: |
2100 | } |
1009 | PUTBACK; |
|
|
1010 | SV_CORO (next, "Coro::transfer"); |
|
|
1011 | SV_CORO (prev, "Coro::transfer"); |
|
|
1012 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
|
|
1013 | SPAGAIN; |
|
|
1014 | |
2101 | |
1015 | void |
2102 | void |
1016 | DESTROY(coro) |
2103 | transfer (...) |
1017 | Coro::State coro |
2104 | CODE: |
1018 | CODE: |
2105 | { |
|
|
2106 | static struct CoroSLF slf = { slf_init_transfer, slf_prepare_transfer, slf_check_nop }; |
|
|
2107 | api_execute_slf (aTHX_ cv, &slf, &ST (0), items); |
|
|
2108 | } |
1019 | |
2109 | |
1020 | if (coro->mainstack && coro->mainstack != main_mainstack) |
2110 | bool |
1021 | { |
2111 | _destroy (SV *coro_sv) |
1022 | struct coro temp; |
2112 | CODE: |
1023 | |
2113 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
1024 | PUTBACK; |
2114 | OUTPUT: |
1025 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
2115 | RETVAL |
1026 | LOAD (aTHX_ coro); |
|
|
1027 | SPAGAIN; |
|
|
1028 | |
|
|
1029 | destroy_stacks (aTHX); |
|
|
1030 | |
|
|
1031 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
1032 | SPAGAIN; |
|
|
1033 | |
|
|
1034 | coro->mainstack = 0; |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | deallocate_stack (coro); |
|
|
1038 | SvREFCNT_dec (coro->args); |
|
|
1039 | Safefree (coro); |
|
|
1040 | |
2116 | |
1041 | void |
2117 | void |
1042 | _exit(code) |
2118 | _exit (int code) |
1043 | int code |
|
|
1044 | PROTOTYPE: $ |
2119 | PROTOTYPE: $ |
1045 | CODE: |
2120 | CODE: |
1046 | _exit (code); |
2121 | _exit (code); |
1047 | |
2122 | |
1048 | MODULE = Coro::State PACKAGE = Coro::Cont |
2123 | int |
|
|
2124 | cctx_stacksize (int new_stacksize = 0) |
|
|
2125 | CODE: |
|
|
2126 | RETVAL = cctx_stacksize; |
|
|
2127 | if (new_stacksize) |
|
|
2128 | { |
|
|
2129 | cctx_stacksize = new_stacksize; |
|
|
2130 | ++cctx_gen; |
|
|
2131 | } |
|
|
2132 | OUTPUT: |
|
|
2133 | RETVAL |
1049 | |
2134 | |
1050 | # this is slightly dirty (should expose a c-level api) |
2135 | int |
|
|
2136 | cctx_max_idle (int max_idle = 0) |
|
|
2137 | CODE: |
|
|
2138 | RETVAL = cctx_max_idle; |
|
|
2139 | if (max_idle > 1) |
|
|
2140 | cctx_max_idle = max_idle; |
|
|
2141 | OUTPUT: |
|
|
2142 | RETVAL |
|
|
2143 | |
|
|
2144 | int |
|
|
2145 | cctx_count () |
|
|
2146 | CODE: |
|
|
2147 | RETVAL = cctx_count; |
|
|
2148 | OUTPUT: |
|
|
2149 | RETVAL |
|
|
2150 | |
|
|
2151 | int |
|
|
2152 | cctx_idle () |
|
|
2153 | CODE: |
|
|
2154 | RETVAL = cctx_idle; |
|
|
2155 | OUTPUT: |
|
|
2156 | RETVAL |
1051 | |
2157 | |
1052 | void |
2158 | void |
1053 | yield(...) |
2159 | list () |
|
|
2160 | PPCODE: |
|
|
2161 | { |
|
|
2162 | struct coro *coro; |
|
|
2163 | for (coro = coro_first; coro; coro = coro->next) |
|
|
2164 | if (coro->hv) |
|
|
2165 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
2166 | } |
|
|
2167 | |
|
|
2168 | void |
|
|
2169 | call (Coro::State coro, SV *coderef) |
|
|
2170 | ALIAS: |
|
|
2171 | eval = 1 |
|
|
2172 | CODE: |
|
|
2173 | { |
|
|
2174 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
2175 | { |
|
|
2176 | struct coro temp; |
|
|
2177 | |
|
|
2178 | if (!(coro->flags & CF_RUNNING)) |
|
|
2179 | { |
|
|
2180 | PUTBACK; |
|
|
2181 | save_perl (aTHX_ &temp); |
|
|
2182 | load_perl (aTHX_ coro); |
|
|
2183 | } |
|
|
2184 | |
|
|
2185 | { |
|
|
2186 | dSP; |
|
|
2187 | ENTER; |
|
|
2188 | SAVETMPS; |
|
|
2189 | PUTBACK; |
|
|
2190 | PUSHSTACK; |
|
|
2191 | PUSHMARK (SP); |
|
|
2192 | |
|
|
2193 | if (ix) |
|
|
2194 | eval_sv (coderef, 0); |
|
|
2195 | else |
|
|
2196 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
2197 | |
|
|
2198 | POPSTACK; |
|
|
2199 | SPAGAIN; |
|
|
2200 | FREETMPS; |
|
|
2201 | LEAVE; |
|
|
2202 | PUTBACK; |
|
|
2203 | } |
|
|
2204 | |
|
|
2205 | if (!(coro->flags & CF_RUNNING)) |
|
|
2206 | { |
|
|
2207 | save_perl (aTHX_ coro); |
|
|
2208 | load_perl (aTHX_ &temp); |
|
|
2209 | SPAGAIN; |
|
|
2210 | } |
|
|
2211 | } |
|
|
2212 | } |
|
|
2213 | |
|
|
2214 | SV * |
|
|
2215 | is_ready (Coro::State coro) |
|
|
2216 | PROTOTYPE: $ |
|
|
2217 | ALIAS: |
|
|
2218 | is_ready = CF_READY |
|
|
2219 | is_running = CF_RUNNING |
|
|
2220 | is_new = CF_NEW |
|
|
2221 | is_destroyed = CF_DESTROYED |
|
|
2222 | CODE: |
|
|
2223 | RETVAL = boolSV (coro->flags & ix); |
|
|
2224 | OUTPUT: |
|
|
2225 | RETVAL |
|
|
2226 | |
|
|
2227 | void |
|
|
2228 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
1054 | PROTOTYPE: @ |
2229 | PROTOTYPE: $;$ |
1055 | CODE: |
2230 | CODE: |
1056 | SV *yieldstack; |
2231 | SvREFCNT_dec (self->throw); |
1057 | SV *sv; |
2232 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
1058 | AV *defav = GvAV (PL_defgv); |
|
|
1059 | struct coro *prev, *next; |
|
|
1060 | |
2233 | |
1061 | yieldstack = *hv_fetch ( |
2234 | void |
1062 | (HV *)SvRV (GvSV (coro_current)), |
2235 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
1063 | "yieldstack", sizeof ("yieldstack") - 1, |
2236 | C_ARGS: aTHX_ coro, flags |
|
|
2237 | |
|
|
2238 | SV * |
|
|
2239 | has_cctx (Coro::State coro) |
|
|
2240 | PROTOTYPE: $ |
|
|
2241 | CODE: |
|
|
2242 | RETVAL = boolSV (!!coro->cctx); |
|
|
2243 | OUTPUT: |
|
|
2244 | RETVAL |
|
|
2245 | |
|
|
2246 | int |
|
|
2247 | is_traced (Coro::State coro) |
|
|
2248 | PROTOTYPE: $ |
|
|
2249 | CODE: |
|
|
2250 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
2251 | OUTPUT: |
|
|
2252 | RETVAL |
|
|
2253 | |
|
|
2254 | UV |
|
|
2255 | rss (Coro::State coro) |
|
|
2256 | PROTOTYPE: $ |
|
|
2257 | ALIAS: |
|
|
2258 | usecount = 1 |
|
|
2259 | CODE: |
|
|
2260 | switch (ix) |
|
|
2261 | { |
|
|
2262 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
2263 | case 1: RETVAL = coro->usecount; break; |
1064 | 0 |
2264 | } |
|
|
2265 | OUTPUT: |
|
|
2266 | RETVAL |
|
|
2267 | |
|
|
2268 | void |
|
|
2269 | force_cctx () |
|
|
2270 | CODE: |
|
|
2271 | struct coro *coro = SvSTATE (coro_current); |
|
|
2272 | coro->cctx->idle_sp = 0; |
|
|
2273 | |
|
|
2274 | void |
|
|
2275 | swap_defsv (Coro::State self) |
|
|
2276 | PROTOTYPE: $ |
|
|
2277 | ALIAS: |
|
|
2278 | swap_defav = 1 |
|
|
2279 | CODE: |
|
|
2280 | if (!self->slot) |
|
|
2281 | croak ("cannot swap state with coroutine that has no saved state"); |
|
|
2282 | else |
1065 | ); |
2283 | { |
|
|
2284 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
2285 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
1066 | |
2286 | |
1067 | /* set up @_ -- ugly */ |
2287 | SV *tmp = *src; *src = *dst; *dst = tmp; |
1068 | av_clear (defav); |
2288 | } |
1069 | av_fill (defav, items - 1); |
|
|
1070 | while (items--) |
|
|
1071 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1072 | |
|
|
1073 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1074 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1075 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1076 | SvREFCNT_dec (sv); |
|
|
1077 | |
|
|
1078 | transfer (aTHX_ prev, next, 0); |
|
|
1079 | |
2289 | |
1080 | MODULE = Coro::State PACKAGE = Coro |
2290 | MODULE = Coro::State PACKAGE = Coro |
1081 | |
2291 | |
1082 | # this is slightly dirty (should expose a c-level api) |
|
|
1083 | |
|
|
1084 | BOOT: |
2292 | BOOT: |
1085 | { |
2293 | { |
1086 | int i; |
2294 | int i; |
|
|
2295 | |
|
|
2296 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
2297 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
2298 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
2299 | |
|
|
2300 | coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
|
|
2301 | SvREADONLY_on (coro_current); |
|
|
2302 | |
1087 | HV *stash = gv_stashpv ("Coro", TRUE); |
2303 | coro_stash = gv_stashpv ("Coro", TRUE); |
1088 | |
2304 | |
1089 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2305 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1090 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2306 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1091 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2307 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1092 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2308 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1093 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2309 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1094 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2310 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1095 | |
|
|
1096 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1097 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1098 | |
2311 | |
1099 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2312 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1100 | coro_ready[i] = newAV (); |
2313 | coro_ready[i] = newAV (); |
1101 | |
2314 | |
1102 | { |
2315 | { |
1103 | SV *sv = perl_get_sv("Coro::API", 1); |
2316 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
1104 | |
2317 | |
1105 | coroapi.schedule = api_schedule; |
2318 | coroapi.schedule = api_schedule; |
1106 | coroapi.cede = api_cede; |
2319 | coroapi.cede = api_cede; |
|
|
2320 | coroapi.cede_notself = api_cede_notself; |
1107 | coroapi.ready = api_ready; |
2321 | coroapi.ready = api_ready; |
|
|
2322 | coroapi.is_ready = api_is_ready; |
1108 | coroapi.nready = &coro_nready; |
2323 | coroapi.nready = coro_nready; |
1109 | coroapi.current = coro_current; |
2324 | coroapi.current = coro_current; |
1110 | |
2325 | |
1111 | GCoroAPI = &coroapi; |
2326 | GCoroAPI = &coroapi; |
1112 | sv_setiv(sv, (IV)&coroapi); |
2327 | sv_setiv (sv, (IV)&coroapi); |
1113 | SvREADONLY_on(sv); |
2328 | SvREADONLY_on (sv); |
1114 | } |
2329 | } |
1115 | } |
2330 | } |
1116 | |
2331 | |
1117 | #if !PERL_MICRO |
|
|
1118 | |
|
|
1119 | void |
2332 | void |
1120 | ready(self) |
2333 | schedule (...) |
1121 | SV * self |
2334 | CODE: |
|
|
2335 | { |
|
|
2336 | static struct CoroSLF slf = { slf_init_nop, prepare_schedule, slf_check_nop }; |
|
|
2337 | api_execute_slf (aTHX_ cv, &slf, &ST (0), items); |
|
|
2338 | } |
|
|
2339 | |
|
|
2340 | void |
|
|
2341 | cede (...) |
|
|
2342 | CODE: |
|
|
2343 | { |
|
|
2344 | static struct CoroSLF slf = { slf_init_nop, prepare_cede, slf_check_nop }; |
|
|
2345 | api_execute_slf (aTHX_ cv, &slf, &ST (0), items); |
|
|
2346 | } |
|
|
2347 | |
|
|
2348 | void |
|
|
2349 | cede_notself (...) |
|
|
2350 | CODE: |
|
|
2351 | { |
|
|
2352 | static struct CoroSLF slf = { slf_init_nop, prepare_cede_notself, slf_check_nop }; |
|
|
2353 | api_execute_slf (aTHX_ cv, &slf, &ST (0), items); |
|
|
2354 | } |
|
|
2355 | |
|
|
2356 | void |
|
|
2357 | _set_current (SV *current) |
1122 | PROTOTYPE: $ |
2358 | PROTOTYPE: $ |
1123 | CODE: |
2359 | CODE: |
1124 | api_ready (self); |
2360 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
2361 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
1125 | |
2362 | |
1126 | #endif |
2363 | void |
|
|
2364 | _set_readyhook (SV *hook) |
|
|
2365 | PROTOTYPE: $ |
|
|
2366 | CODE: |
|
|
2367 | LOCK; |
|
|
2368 | SvREFCNT_dec (coro_readyhook); |
|
|
2369 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
|
|
2370 | UNLOCK; |
1127 | |
2371 | |
1128 | int |
2372 | int |
|
|
2373 | prio (Coro::State coro, int newprio = 0) |
|
|
2374 | ALIAS: |
|
|
2375 | nice = 1 |
|
|
2376 | CODE: |
|
|
2377 | { |
|
|
2378 | RETVAL = coro->prio; |
|
|
2379 | |
|
|
2380 | if (items > 1) |
|
|
2381 | { |
|
|
2382 | if (ix) |
|
|
2383 | newprio = coro->prio - newprio; |
|
|
2384 | |
|
|
2385 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
2386 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
2387 | |
|
|
2388 | coro->prio = newprio; |
|
|
2389 | } |
|
|
2390 | } |
|
|
2391 | OUTPUT: |
|
|
2392 | RETVAL |
|
|
2393 | |
|
|
2394 | SV * |
|
|
2395 | ready (SV *self) |
|
|
2396 | PROTOTYPE: $ |
|
|
2397 | CODE: |
|
|
2398 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
2399 | OUTPUT: |
|
|
2400 | RETVAL |
|
|
2401 | |
|
|
2402 | int |
1129 | nready(...) |
2403 | nready (...) |
1130 | PROTOTYPE: |
2404 | PROTOTYPE: |
1131 | CODE: |
2405 | CODE: |
1132 | RETVAL = coro_nready; |
2406 | RETVAL = coro_nready; |
1133 | OUTPUT: |
2407 | OUTPUT: |
1134 | RETVAL |
2408 | RETVAL |
1135 | |
2409 | |
|
|
2410 | # for async_pool speedup |
1136 | void |
2411 | void |
1137 | schedule(...) |
2412 | _pool_1 (SV *cb) |
1138 | PROTOTYPE: |
|
|
1139 | CODE: |
2413 | CODE: |
1140 | api_schedule (); |
2414 | { |
|
|
2415 | struct coro *coro = SvSTATE (coro_current); |
|
|
2416 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2417 | AV *defav = GvAV (PL_defgv); |
|
|
2418 | SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
|
|
2419 | AV *invoke_av; |
|
|
2420 | int i, len; |
|
|
2421 | |
|
|
2422 | if (!invoke) |
|
|
2423 | { |
|
|
2424 | SV *old = PL_diehook; |
|
|
2425 | PL_diehook = 0; |
|
|
2426 | SvREFCNT_dec (old); |
|
|
2427 | croak ("\3async_pool terminate\2\n"); |
|
|
2428 | } |
|
|
2429 | |
|
|
2430 | SvREFCNT_dec (coro->saved_deffh); |
|
|
2431 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2432 | |
|
|
2433 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2434 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2435 | |
|
|
2436 | invoke_av = (AV *)SvRV (invoke); |
|
|
2437 | len = av_len (invoke_av); |
|
|
2438 | |
|
|
2439 | sv_setsv (cb, AvARRAY (invoke_av)[0]); |
|
|
2440 | |
|
|
2441 | if (len > 0) |
|
|
2442 | { |
|
|
2443 | av_fill (defav, len - 1); |
|
|
2444 | for (i = 0; i < len; ++i) |
|
|
2445 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
|
|
2446 | } |
|
|
2447 | |
|
|
2448 | SvREFCNT_dec (invoke); |
|
|
2449 | } |
1141 | |
2450 | |
1142 | void |
2451 | void |
1143 | cede(...) |
2452 | _pool_2 (SV *cb) |
1144 | PROTOTYPE: |
|
|
1145 | CODE: |
2453 | CODE: |
|
|
2454 | { |
|
|
2455 | struct coro *coro = SvSTATE (coro_current); |
|
|
2456 | |
|
|
2457 | sv_setsv (cb, &PL_sv_undef); |
|
|
2458 | |
|
|
2459 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2460 | coro->saved_deffh = 0; |
|
|
2461 | |
|
|
2462 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
2463 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2464 | { |
|
|
2465 | SV *old = PL_diehook; |
|
|
2466 | PL_diehook = 0; |
|
|
2467 | SvREFCNT_dec (old); |
|
|
2468 | croak ("\3async_pool terminate\2\n"); |
|
|
2469 | } |
|
|
2470 | |
|
|
2471 | av_clear (GvAV (PL_defgv)); |
|
|
2472 | hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
|
|
2473 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
|
|
2474 | |
|
|
2475 | coro->prio = 0; |
|
|
2476 | |
|
|
2477 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
2478 | api_trace (aTHX_ coro_current, 0); |
|
|
2479 | |
|
|
2480 | av_push (av_async_pool, newSVsv (coro_current)); |
|
|
2481 | } |
|
|
2482 | |
|
|
2483 | #if 0 |
|
|
2484 | |
|
|
2485 | void |
|
|
2486 | _generator_call (...) |
|
|
2487 | PROTOTYPE: @ |
|
|
2488 | PPCODE: |
|
|
2489 | fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); |
|
|
2490 | xxxx |
|
|
2491 | abort (); |
|
|
2492 | |
|
|
2493 | SV * |
|
|
2494 | gensub (SV *sub, ...) |
|
|
2495 | PROTOTYPE: &;@ |
|
|
2496 | CODE: |
|
|
2497 | { |
|
|
2498 | struct coro *coro; |
|
|
2499 | MAGIC *mg; |
|
|
2500 | CV *xcv; |
|
|
2501 | CV *ncv = (CV *)newSV_type (SVt_PVCV); |
|
|
2502 | int i; |
|
|
2503 | |
|
|
2504 | CvGV (ncv) = CvGV (cv); |
|
|
2505 | CvFILE (ncv) = CvFILE (cv); |
|
|
2506 | |
|
|
2507 | Newz (0, coro, 1, struct coro); |
|
|
2508 | coro->args = newAV (); |
|
|
2509 | coro->flags = CF_NEW; |
|
|
2510 | |
|
|
2511 | av_extend (coro->args, items - 1); |
|
|
2512 | for (i = 1; i < items; i++) |
|
|
2513 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2514 | |
|
|
2515 | CvISXSUB_on (ncv); |
|
|
2516 | CvXSUBANY (ncv).any_ptr = (void *)coro; |
|
|
2517 | |
|
|
2518 | xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV)); |
|
|
2519 | |
|
|
2520 | CvXSUB (ncv) = CvXSUB (xcv); |
|
|
2521 | CvANON_on (ncv); |
|
|
2522 | |
|
|
2523 | mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0); |
|
|
2524 | RETVAL = newRV_noinc ((SV *)ncv); |
|
|
2525 | } |
|
|
2526 | OUTPUT: |
|
|
2527 | RETVAL |
|
|
2528 | |
|
|
2529 | #endif |
|
|
2530 | |
|
|
2531 | |
|
|
2532 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
2533 | |
|
|
2534 | void |
|
|
2535 | _get_state (SV *self) |
|
|
2536 | PPCODE: |
|
|
2537 | { |
|
|
2538 | AV *defav = GvAV (PL_defgv); |
|
|
2539 | AV *av = newAV (); |
|
|
2540 | int i; |
|
|
2541 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2542 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2543 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2544 | SvPOK_only (data_sv); |
|
|
2545 | |
|
|
2546 | data->errorno = errno; |
|
|
2547 | data->laststype = PL_laststype; |
|
|
2548 | data->laststatval = PL_laststatval; |
|
|
2549 | data->statcache = PL_statcache; |
|
|
2550 | |
|
|
2551 | av_extend (av, AvFILLp (defav) + 1 + 1); |
|
|
2552 | |
|
|
2553 | for (i = 0; i <= AvFILLp (defav); ++i) |
|
|
2554 | av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
|
|
2555 | |
|
|
2556 | av_push (av, data_sv); |
|
|
2557 | |
|
|
2558 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
2559 | |
|
|
2560 | api_ready (aTHX_ self); |
|
|
2561 | } |
|
|
2562 | |
|
|
2563 | void |
|
|
2564 | _set_state (SV *state) |
|
|
2565 | PROTOTYPE: $ |
|
|
2566 | PPCODE: |
|
|
2567 | { |
|
|
2568 | AV *av = (AV *)SvRV (state); |
|
|
2569 | struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
|
|
2570 | int i; |
|
|
2571 | |
|
|
2572 | errno = data->errorno; |
|
|
2573 | PL_laststype = data->laststype; |
|
|
2574 | PL_laststatval = data->laststatval; |
|
|
2575 | PL_statcache = data->statcache; |
|
|
2576 | |
|
|
2577 | EXTEND (SP, AvFILLp (av)); |
|
|
2578 | for (i = 0; i < AvFILLp (av); ++i) |
|
|
2579 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
|
|
2580 | } |
|
|
2581 | |
|
|
2582 | |
|
|
2583 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
2584 | |
|
|
2585 | BOOT: |
|
|
2586 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
2587 | |
|
|
2588 | SV * |
|
|
2589 | _schedule (...) |
|
|
2590 | PROTOTYPE: @ |
|
|
2591 | CODE: |
|
|
2592 | { |
|
|
2593 | static int incede; |
|
|
2594 | |
1146 | api_cede (); |
2595 | api_cede_notself (aTHX); |
1147 | |
2596 | |
|
|
2597 | ++incede; |
|
|
2598 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
2599 | ; |
|
|
2600 | |
|
|
2601 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
2602 | if (coro_nready >= incede) |
|
|
2603 | { |
|
|
2604 | PUSHMARK (SP); |
|
|
2605 | PUTBACK; |
|
|
2606 | call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
|
|
2607 | SPAGAIN; |
|
|
2608 | } |
|
|
2609 | |
|
|
2610 | --incede; |
|
|
2611 | } |
|
|
2612 | |
|
|
2613 | |
|
|
2614 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
2615 | |
|
|
2616 | BOOT: |
|
|
2617 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
2618 | |