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1 | /* this works around a bug in mingw32 providing a non-working setjmp */ |
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2 | #define USE_NO_MINGW_SETJMP_TWO_ARGS |
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3 | |
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4 | #define NDEBUG 1 |
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5 | |
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6 | #include "libcoro/coro.c" |
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7 | |
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8 | #define PERL_NO_GET_CONTEXT |
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9 | #define PERL_EXT |
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10 | |
1 | #include "EXTERN.h" |
11 | #include "EXTERN.h" |
2 | #include "perl.h" |
12 | #include "perl.h" |
3 | #include "XSUB.h" |
13 | #include "XSUB.h" |
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14 | #include "perliol.h" |
4 | |
15 | |
5 | #if 0 |
16 | #include "schmorp.h" |
6 | # define CHK(x) (void *)0 |
17 | |
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18 | #include <stdio.h> |
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19 | #include <errno.h> |
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20 | #include <assert.h> |
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21 | |
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22 | #ifndef SVs_PADSTALE |
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23 | # define SVs_PADSTALE 0 |
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24 | #endif |
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25 | |
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26 | #if defined(_WIN32) |
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27 | # undef HAS_GETTIMEOFDAY |
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28 | # undef setjmp |
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29 | # undef longjmp |
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30 | # undef _exit |
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31 | # define setjmp _setjmp /* deep magic */ |
7 | #else |
32 | #else |
8 | # define CHK(x) if (!(x)) croak("FATAL, CHK: " #x) |
33 | # include <inttypes.h> /* most portable stdint.h */ |
9 | #endif |
34 | #endif |
10 | |
35 | |
11 | struct coro { |
36 | #ifdef HAVE_MMAP |
12 | U8 dowarn; |
37 | # include <unistd.h> |
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38 | # include <sys/mman.h> |
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39 | # ifndef MAP_ANONYMOUS |
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40 | # ifdef MAP_ANON |
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41 | # define MAP_ANONYMOUS MAP_ANON |
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42 | # else |
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43 | # undef HAVE_MMAP |
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44 | # endif |
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45 | # endif |
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46 | # include <limits.h> |
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47 | # ifndef PAGESIZE |
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48 | # define PAGESIZE pagesize |
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49 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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50 | static long pagesize; |
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51 | # else |
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52 | # define BOOT_PAGESIZE (void)0 |
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53 | # endif |
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54 | #else |
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55 | # define PAGESIZE 0 |
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56 | # define BOOT_PAGESIZE (void)0 |
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57 | #endif |
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58 | |
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59 | #if CORO_USE_VALGRIND |
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60 | # include <valgrind/valgrind.h> |
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61 | #endif |
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62 | |
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63 | /* the maximum number of idle cctx that will be pooled */ |
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64 | static int cctx_max_idle = 4; |
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65 | |
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66 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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67 | # undef CORO_STACKGUARD |
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68 | #endif |
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69 | |
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70 | #ifndef CORO_STACKGUARD |
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71 | # define CORO_STACKGUARD 0 |
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72 | #endif |
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73 | |
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74 | /* prefer perl internal functions over our own? */ |
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75 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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76 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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77 | #endif |
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78 | |
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79 | /* The next macros try to return the current stack pointer, in an as |
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80 | * portable way as possible. */ |
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81 | #if __GNUC__ >= 4 |
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82 | # define dSTACKLEVEL int stacklevel_dummy |
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83 | # define STACKLEVEL __builtin_frame_address (0) |
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84 | #else |
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85 | # define dSTACKLEVEL volatile void *stacklevel |
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86 | # define STACKLEVEL ((void *)&stacklevel) |
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87 | #endif |
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88 | |
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89 | #define IN_DESTRUCT PL_dirty |
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90 | |
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91 | #if __GNUC__ >= 3 |
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92 | # define attribute(x) __attribute__(x) |
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93 | # define expect(expr,value) __builtin_expect ((expr), (value)) |
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94 | # define INLINE static inline |
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95 | #else |
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96 | # define attribute(x) |
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97 | # define expect(expr,value) (expr) |
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98 | # define INLINE static |
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99 | #endif |
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100 | |
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101 | #define expect_false(expr) expect ((expr) != 0, 0) |
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102 | #define expect_true(expr) expect ((expr) != 0, 1) |
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103 | |
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104 | #define NOINLINE attribute ((noinline)) |
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105 | |
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106 | #include "CoroAPI.h" |
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107 | #define GCoroAPI (&coroapi) /* very sneaky */ |
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108 | |
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109 | #ifdef USE_ITHREADS |
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110 | # if CORO_PTHREAD |
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111 | static void *coro_thx; |
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112 | # endif |
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113 | #endif |
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114 | |
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115 | #ifdef __linux |
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116 | # include <time.h> /* for timespec */ |
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117 | # include <syscall.h> /* for SYS_* */ |
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118 | # ifdef SYS_clock_gettime |
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119 | # define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts)) |
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120 | # define CORO_CLOCK_MONOTONIC 1 |
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121 | # define CORO_CLOCK_THREAD_CPUTIME_ID 3 |
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122 | # endif |
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123 | #endif |
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124 | |
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125 | static double (*nvtime)(); /* so why doesn't it take void? */ |
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126 | static void (*u2time)(pTHX_ UV ret[2]); |
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127 | |
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128 | /* we hijack an hopefully unused CV flag for our purposes */ |
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129 | #define CVf_SLF 0x4000 |
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130 | static OP *pp_slf (pTHX); |
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131 | static void slf_destroy (pTHX_ struct coro *coro); |
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132 | |
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133 | static U32 cctx_gen; |
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134 | static size_t cctx_stacksize = CORO_STACKSIZE; |
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135 | static struct CoroAPI coroapi; |
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136 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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137 | static JMPENV *main_top_env; |
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138 | static HV *coro_state_stash, *coro_stash; |
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139 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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140 | |
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141 | static AV *av_destroy; /* destruction queue */ |
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142 | static SV *sv_manager; /* the manager coro */ |
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143 | static SV *sv_idle; /* $Coro::idle */ |
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144 | |
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145 | static GV *irsgv; /* $/ */ |
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146 | static GV *stdoutgv; /* *STDOUT */ |
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147 | static SV *rv_diehook; |
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148 | static SV *rv_warnhook; |
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149 | static HV *hv_sig; /* %SIG */ |
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150 | |
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151 | /* async_pool helper stuff */ |
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152 | static SV *sv_pool_rss; |
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153 | static SV *sv_pool_size; |
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154 | static SV *sv_async_pool_idle; /* description string */ |
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155 | static AV *av_async_pool; /* idle pool */ |
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156 | static SV *sv_Coro; /* class string */ |
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157 | static CV *cv_pool_handler; |
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158 | |
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159 | /* Coro::AnyEvent */ |
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160 | static SV *sv_activity; |
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161 | |
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162 | /* enable processtime/realtime profiling */ |
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163 | static char enable_times; |
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164 | typedef U32 coro_ts[2]; |
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165 | static coro_ts time_real, time_cpu; |
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166 | static char times_valid; |
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167 | |
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168 | static struct coro_cctx *cctx_first; |
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169 | static int cctx_count, cctx_idle; |
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170 | |
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171 | enum |
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172 | { |
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173 | CC_MAPPED = 0x01, |
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174 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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175 | CC_TRACE = 0x04, |
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176 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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177 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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178 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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179 | }; |
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180 | |
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181 | /* this is a structure representing a c-level coroutine */ |
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182 | typedef struct coro_cctx |
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183 | { |
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184 | struct coro_cctx *next; |
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185 | |
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186 | /* the stack */ |
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187 | void *sptr; |
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188 | size_t ssize; |
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189 | |
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190 | /* cpu state */ |
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191 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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192 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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193 | JMPENV *top_env; |
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194 | coro_context cctx; |
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195 | |
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196 | U32 gen; |
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197 | #if CORO_USE_VALGRIND |
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198 | int valgrind_id; |
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199 | #endif |
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200 | unsigned char flags; |
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201 | } coro_cctx; |
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202 | |
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203 | static coro_cctx *cctx_current; /* the currently running cctx */ |
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204 | |
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205 | /*****************************************************************************/ |
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206 | |
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207 | static MGVTBL coro_state_vtbl; |
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208 | |
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209 | enum |
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210 | { |
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211 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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212 | CF_READY = 0x0002, /* coroutine is ready */ |
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213 | CF_NEW = 0x0004, /* has never been switched to */ |
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214 | CF_ZOMBIE = 0x0008, /* coroutine data has been freed */ |
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215 | CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */ |
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216 | CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */ |
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217 | }; |
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218 | |
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219 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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220 | typedef struct |
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221 | { |
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222 | SV *defsv; |
13 | AV *defav; |
223 | AV *defav; |
14 | |
224 | SV *errsv; |
15 | PERL_SI *curstackinfo; |
225 | SV *irsgv; |
16 | AV *curstack; |
226 | HV *hinthv; |
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227 | #define VAR(name,type) type name; |
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228 | # include "state.h" |
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229 | #undef VAR |
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230 | } perl_slots; |
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231 | |
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232 | // how many context stack entries do we need for perl_slots |
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233 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
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234 | |
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235 | /* this is a structure representing a perl-level coroutine */ |
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236 | struct coro |
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237 | { |
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238 | /* the C coroutine allocated to this perl coroutine, if any */ |
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239 | coro_cctx *cctx; |
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240 | |
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241 | /* ready queue */ |
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242 | struct coro *next_ready; |
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243 | |
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244 | /* state data */ |
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245 | struct CoroSLF slf_frame; /* saved slf frame */ |
17 | AV *mainstack; |
246 | AV *mainstack; |
18 | SV **stack_sp; |
247 | perl_slots *slot; /* basically the saved sp */ |
19 | OP *op; |
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20 | SV **curpad; |
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21 | SV **stack_base; |
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22 | SV **stack_max; |
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23 | SV **tmps_stack; |
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24 | I32 tmps_floor; |
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25 | I32 tmps_ix; |
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26 | I32 tmps_max; |
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27 | I32 *markstack; |
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28 | I32 *markstack_ptr; |
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29 | I32 *markstack_max; |
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30 | I32 *scopestack; |
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31 | I32 scopestack_ix; |
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32 | I32 scopestack_max; |
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33 | ANY *savestack; |
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34 | I32 savestack_ix; |
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35 | I32 savestack_max; |
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36 | OP **retstack; |
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37 | I32 retstack_ix; |
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38 | I32 retstack_max; |
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39 | COP *curcop; |
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40 | |
248 | |
41 | AV *args; |
249 | CV *startcv; /* the CV to execute */ |
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250 | AV *args; /* data associated with this coroutine (initial args) */ |
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251 | int flags; /* CF_ flags */ |
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252 | HV *hv; /* the perl hash associated with this coro, if any */ |
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253 | |
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254 | /* statistics */ |
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255 | int usecount; /* number of transfers to this coro */ |
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256 | |
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257 | /* coro process data */ |
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258 | int prio; |
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259 | SV *except; /* exception to be thrown */ |
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260 | SV *rouse_cb; /* last rouse callback */ |
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261 | AV *on_destroy; /* callbacks or coros to notify on destroy */ |
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262 | AV *status; /* the exit status list */ |
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263 | |
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264 | /* async_pool */ |
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265 | SV *saved_deffh; |
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266 | SV *invoke_cb; |
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267 | AV *invoke_av; |
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268 | |
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269 | /* on_enter/on_leave */ |
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270 | AV *on_enter; |
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271 | AV *on_leave; |
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272 | |
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273 | /* swap_sv */ |
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274 | AV *swap_sv; |
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275 | |
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276 | /* times */ |
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277 | coro_ts t_cpu, t_real; |
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278 | |
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279 | /* linked list */ |
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280 | struct coro *next, *prev; |
42 | }; |
281 | }; |
43 | |
282 | |
44 | typedef struct coro *Coro__State; |
283 | typedef struct coro *Coro__State; |
45 | typedef struct coro *Coro__State_or_hashref; |
284 | typedef struct coro *Coro__State_or_hashref; |
46 | |
285 | |
47 | static HV *padlist_cache; |
286 | /* the following variables are effectively part of the perl context */ |
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287 | /* and get copied between struct coro and these variables */ |
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288 | /* the main reason we don't support windows process emulation */ |
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289 | static struct CoroSLF slf_frame; /* the current slf frame */ |
48 | |
290 | |
49 | /* mostly copied from op.c:cv_clone2 */ |
291 | /** Coro ********************************************************************/ |
50 | STATIC AV * |
292 | |
51 | clone_padlist (AV *protopadlist) |
293 | #define CORO_PRIO_MAX 3 |
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294 | #define CORO_PRIO_HIGH 1 |
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295 | #define CORO_PRIO_NORMAL 0 |
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296 | #define CORO_PRIO_LOW -1 |
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297 | #define CORO_PRIO_IDLE -3 |
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298 | #define CORO_PRIO_MIN -4 |
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299 | |
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300 | /* for Coro.pm */ |
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301 | static SV *coro_current; |
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302 | static SV *coro_readyhook; |
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303 | static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */ |
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304 | static CV *cv_coro_run; |
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305 | static struct coro *coro_first; |
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306 | #define coro_nready coroapi.nready |
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307 | |
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308 | /** Coro::Select ************************************************************/ |
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309 | |
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310 | static OP *(*coro_old_pp_sselect) (pTHX); |
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311 | static SV *coro_select_select; |
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312 | |
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313 | /* horrible hack, but if it works... */ |
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314 | static OP * |
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315 | coro_pp_sselect (pTHX) |
52 | { |
316 | { |
53 | AV *av; |
317 | dSP; |
54 | I32 ix; |
318 | PUSHMARK (SP - 4); /* fake argument list */ |
55 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
319 | XPUSHs (coro_select_select); |
56 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
320 | PUTBACK; |
57 | SV **pname = AvARRAY (protopad_name); |
321 | |
58 | SV **ppad = AvARRAY (protopad); |
322 | /* entersub is an UNOP, select a LISTOP... keep your fingers crossed */ |
59 | I32 fname = AvFILLp (protopad_name); |
323 | PL_op->op_flags |= OPf_STACKED; |
60 | I32 fpad = AvFILLp (protopad); |
324 | PL_op->op_private = 0; |
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325 | return PL_ppaddr [OP_ENTERSUB](aTHX); |
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326 | } |
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327 | |
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328 | /** time stuff **************************************************************/ |
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329 | |
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330 | #ifdef HAS_GETTIMEOFDAY |
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331 | |
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332 | static void |
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333 | coro_u2time (pTHX_ UV ret[2]) |
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334 | { |
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335 | struct timeval tv; |
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336 | gettimeofday (&tv, 0); |
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337 | |
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338 | ret [0] = tv.tv_sec; |
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339 | ret [1] = tv.tv_usec; |
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340 | } |
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341 | |
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342 | static double |
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343 | coro_nvtime () |
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344 | { |
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345 | struct timeval tv; |
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346 | gettimeofday (&tv, 0); |
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347 | |
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348 | return tv.tv_sec + tv.tv_usec * 1e-6; |
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349 | } |
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350 | |
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351 | static void |
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352 | time_init (pTHX) |
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353 | { |
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354 | nvtime = coro_nvtime; |
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355 | u2time = coro_u2time; |
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356 | } |
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357 | |
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358 | #else |
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359 | |
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360 | static void |
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361 | time_init (pTHX) |
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362 | { |
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363 | SV **svp; |
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364 | |
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365 | require_pv ("Time/HiRes.pm"); |
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366 | |
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367 | svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
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368 | |
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369 | if (!svp) croak ("Time::HiRes is required, but missing. Caught"); |
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370 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught"); |
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371 | |
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372 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
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373 | |
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374 | svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0); |
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375 | u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp)); |
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376 | } |
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377 | |
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378 | #endif |
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379 | |
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380 | /** lowlevel stuff **********************************************************/ |
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381 | |
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382 | static SV * |
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383 | coro_get_sv (pTHX_ const char *name, int create) |
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384 | { |
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385 | #if PERL_VERSION_ATLEAST (5,10,0) |
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386 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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387 | get_sv (name, create); |
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388 | #endif |
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389 | return get_sv (name, create); |
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390 | } |
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391 | |
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392 | static AV * |
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393 | coro_get_av (pTHX_ const char *name, int create) |
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394 | { |
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395 | #if PERL_VERSION_ATLEAST (5,10,0) |
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396 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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397 | get_av (name, create); |
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398 | #endif |
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399 | return get_av (name, create); |
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400 | } |
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401 | |
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402 | static HV * |
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403 | coro_get_hv (pTHX_ const char *name, int create) |
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404 | { |
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405 | #if PERL_VERSION_ATLEAST (5,10,0) |
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406 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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407 | get_hv (name, create); |
|
|
408 | #endif |
|
|
409 | return get_hv (name, create); |
|
|
410 | } |
|
|
411 | |
|
|
412 | INLINE void |
|
|
413 | coro_times_update () |
|
|
414 | { |
|
|
415 | #ifdef coro_clock_gettime |
|
|
416 | struct timespec ts; |
|
|
417 | |
|
|
418 | ts.tv_sec = ts.tv_nsec = 0; |
|
|
419 | coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts); |
|
|
420 | time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec; |
|
|
421 | |
|
|
422 | ts.tv_sec = ts.tv_nsec = 0; |
|
|
423 | coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts); |
|
|
424 | time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec; |
|
|
425 | #else |
|
|
426 | dTHX; |
|
|
427 | UV tv[2]; |
|
|
428 | |
|
|
429 | u2time (aTHX_ tv); |
|
|
430 | time_real [0] = tv [0]; |
|
|
431 | time_real [1] = tv [1] * 1000; |
|
|
432 | #endif |
|
|
433 | } |
|
|
434 | |
|
|
435 | INLINE void |
|
|
436 | coro_times_add (struct coro *c) |
|
|
437 | { |
|
|
438 | c->t_real [1] += time_real [1]; |
|
|
439 | if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; } |
|
|
440 | c->t_real [0] += time_real [0]; |
|
|
441 | |
|
|
442 | c->t_cpu [1] += time_cpu [1]; |
|
|
443 | if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; } |
|
|
444 | c->t_cpu [0] += time_cpu [0]; |
|
|
445 | } |
|
|
446 | |
|
|
447 | INLINE void |
|
|
448 | coro_times_sub (struct coro *c) |
|
|
449 | { |
|
|
450 | if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; } |
|
|
451 | c->t_real [1] -= time_real [1]; |
|
|
452 | c->t_real [0] -= time_real [0]; |
|
|
453 | |
|
|
454 | if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; } |
|
|
455 | c->t_cpu [1] -= time_cpu [1]; |
|
|
456 | c->t_cpu [0] -= time_cpu [0]; |
|
|
457 | } |
|
|
458 | |
|
|
459 | /*****************************************************************************/ |
|
|
460 | /* magic glue */ |
|
|
461 | |
|
|
462 | #define CORO_MAGIC_type_cv 26 |
|
|
463 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
|
|
464 | |
|
|
465 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
466 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
467 | ? SvMAGIC (sv) \ |
|
|
468 | : mg_find (sv, type)) |
|
|
469 | |
|
|
470 | #define CORO_MAGIC(sv, type) \ |
|
|
471 | (expect_true (SvMAGIC (sv)) \ |
|
|
472 | ? CORO_MAGIC_NN (sv, type) \ |
|
|
473 | : 0) |
|
|
474 | |
|
|
475 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
476 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
477 | |
|
|
478 | INLINE MAGIC * |
|
|
479 | SvSTATEhv_p (pTHX_ SV *coro) |
|
|
480 | { |
|
|
481 | MAGIC *mg; |
|
|
482 | |
|
|
483 | if (expect_true ( |
|
|
484 | SvTYPE (coro) == SVt_PVHV |
|
|
485 | && (mg = CORO_MAGIC_state (coro)) |
|
|
486 | && mg->mg_virtual == &coro_state_vtbl |
|
|
487 | )) |
|
|
488 | return mg; |
|
|
489 | |
|
|
490 | return 0; |
|
|
491 | } |
|
|
492 | |
|
|
493 | INLINE struct coro * |
|
|
494 | SvSTATE_ (pTHX_ SV *coro) |
|
|
495 | { |
|
|
496 | MAGIC *mg; |
|
|
497 | |
|
|
498 | if (SvROK (coro)) |
|
|
499 | coro = SvRV (coro); |
|
|
500 | |
|
|
501 | mg = SvSTATEhv_p (coro); |
|
|
502 | if (!mg) |
|
|
503 | croak ("Coro::State object required"); |
|
|
504 | |
|
|
505 | return (struct coro *)mg->mg_ptr; |
|
|
506 | } |
|
|
507 | |
|
|
508 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
509 | |
|
|
510 | /* faster than SvSTATE, but expects a coroutine hv */ |
|
|
511 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
|
|
512 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
|
|
513 | |
|
|
514 | /*****************************************************************************/ |
|
|
515 | /* padlist management and caching */ |
|
|
516 | |
|
|
517 | static AV * |
|
|
518 | coro_derive_padlist (pTHX_ CV *cv) |
|
|
519 | { |
|
|
520 | AV *padlist = CvPADLIST (cv); |
61 | AV *newpadlist, *newpad_name, *newpad; |
521 | AV *newpadlist, *newpad; |
62 | SV **npad; |
|
|
63 | |
|
|
64 | newpad_name = newAV (); |
|
|
65 | for (ix = fname; ix >= 0; ix--) |
|
|
66 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
|
|
67 | |
|
|
68 | newpad = newAV (); |
|
|
69 | av_fill (newpad, AvFILLp (protopad)); |
|
|
70 | npad = AvARRAY (newpad); |
|
|
71 | |
522 | |
72 | newpadlist = newAV (); |
523 | newpadlist = newAV (); |
73 | AvREAL_off (newpadlist); |
524 | AvREAL_off (newpadlist); |
74 | av_store (newpadlist, 0, (SV *) newpad_name); |
525 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
526 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
527 | #else |
|
|
528 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
|
|
529 | #endif |
|
|
530 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
|
|
531 | --AvFILLp (padlist); |
|
|
532 | |
|
|
533 | av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); |
75 | av_store (newpadlist, 1, (SV *) newpad); |
534 | av_store (newpadlist, 1, (SV *)newpad); |
76 | |
535 | |
77 | av = newAV (); /* will be @_ */ |
536 | return newpadlist; |
78 | av_extend (av, 0); |
537 | } |
79 | av_store (newpad, 0, (SV *) av); |
|
|
80 | AvFLAGS (av) = AVf_REIFY; |
|
|
81 | |
538 | |
82 | for (ix = fpad; ix > 0; ix--) |
539 | static void |
|
|
540 | free_padlist (pTHX_ AV *padlist) |
|
|
541 | { |
|
|
542 | /* may be during global destruction */ |
|
|
543 | if (!IN_DESTRUCT) |
83 | { |
544 | { |
84 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
545 | I32 i = AvFILLp (padlist); |
85 | if (namesv && namesv != &PL_sv_undef) |
546 | |
|
|
547 | while (i > 0) /* special-case index 0 */ |
86 | { |
548 | { |
87 | char *name = SvPVX (namesv); /* XXX */ |
549 | /* we try to be extra-careful here */ |
88 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
550 | AV *av = (AV *)AvARRAY (padlist)[i--]; |
89 | { /* lexical from outside? */ |
551 | I32 j = AvFILLp (av); |
90 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
552 | |
91 | } |
553 | while (j >= 0) |
92 | else |
554 | SvREFCNT_dec (AvARRAY (av)[j--]); |
93 | { /* our own lexical */ |
555 | |
94 | SV *sv; |
556 | AvFILLp (av) = -1; |
95 | if (*name == '&') |
557 | SvREFCNT_dec (av); |
96 | sv = SvREFCNT_inc (ppad[ix]); |
|
|
97 | else if (*name == '@') |
|
|
98 | sv = (SV *) newAV (); |
|
|
99 | else if (*name == '%') |
|
|
100 | sv = (SV *) newHV (); |
|
|
101 | else |
|
|
102 | sv = NEWSV (0, 0); |
|
|
103 | if (!SvPADBUSY (sv)) |
|
|
104 | SvPADMY_on (sv); |
|
|
105 | npad[ix] = sv; |
|
|
106 | } |
|
|
107 | } |
558 | } |
108 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
559 | |
109 | { |
560 | SvREFCNT_dec (AvARRAY (padlist)[0]); |
110 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
561 | |
111 | } |
562 | AvFILLp (padlist) = -1; |
|
|
563 | SvREFCNT_dec ((SV*)padlist); |
|
|
564 | } |
|
|
565 | } |
|
|
566 | |
|
|
567 | static int |
|
|
568 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
569 | { |
|
|
570 | AV *padlist; |
|
|
571 | AV *av = (AV *)mg->mg_obj; |
|
|
572 | |
|
|
573 | /* perl manages to free our internal AV and _then_ call us */ |
|
|
574 | if (IN_DESTRUCT) |
|
|
575 | return 0; |
|
|
576 | |
|
|
577 | /* casting is fun. */ |
|
|
578 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
579 | free_padlist (aTHX_ padlist); |
|
|
580 | |
|
|
581 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
|
|
582 | |
|
|
583 | return 0; |
|
|
584 | } |
|
|
585 | |
|
|
586 | static MGVTBL coro_cv_vtbl = { |
|
|
587 | 0, 0, 0, 0, |
|
|
588 | coro_cv_free |
|
|
589 | }; |
|
|
590 | |
|
|
591 | /* the next two functions merely cache the padlists */ |
|
|
592 | static void |
|
|
593 | get_padlist (pTHX_ CV *cv) |
|
|
594 | { |
|
|
595 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
596 | AV *av; |
|
|
597 | |
|
|
598 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
|
|
599 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
112 | else |
600 | else |
113 | { |
601 | { |
114 | SV *sv = NEWSV (0, 0); |
602 | #if CORO_PREFER_PERL_FUNCTIONS |
115 | SvPADTMP_on (sv); |
603 | /* this is probably cleaner? but also slower! */ |
116 | npad[ix] = sv; |
604 | /* in practise, it seems to be less stable */ |
117 | } |
605 | CV *cp = Perl_cv_clone (aTHX_ cv); |
118 | } |
606 | CvPADLIST (cv) = CvPADLIST (cp); |
119 | |
607 | CvPADLIST (cp) = 0; |
120 | #if 0 /* NONOTUNDERSTOOD */ |
608 | SvREFCNT_dec (cp); |
121 | /* Now that vars are all in place, clone nested closures. */ |
609 | #else |
122 | |
610 | CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); |
123 | for (ix = fpad; ix > 0; ix--) { |
|
|
124 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
|
|
125 | if (namesv |
|
|
126 | && namesv != &PL_sv_undef |
|
|
127 | && !(SvFLAGS(namesv) & SVf_FAKE) |
|
|
128 | && *SvPVX(namesv) == '&' |
|
|
129 | && CvCLONE(ppad[ix])) |
|
|
130 | { |
|
|
131 | CV *kid = cv_clone((CV*)ppad[ix]); |
|
|
132 | SvREFCNT_dec(ppad[ix]); |
|
|
133 | CvCLONE_on(kid); |
|
|
134 | SvPADMY_on(kid); |
|
|
135 | npad[ix] = (SV*)kid; |
|
|
136 | } |
|
|
137 | } |
|
|
138 | #endif |
611 | #endif |
139 | |
612 | } |
140 | return newpadlist; |
|
|
141 | } |
613 | } |
142 | |
614 | |
143 | STATIC AV * |
615 | static void |
144 | free_padlist (AV *padlist) |
616 | put_padlist (pTHX_ CV *cv) |
145 | { |
617 | { |
146 | /* may be during global destruction */ |
618 | MAGIC *mg = CORO_MAGIC_cv (cv); |
147 | if (SvREFCNT(padlist)) |
619 | AV *av; |
|
|
620 | |
|
|
621 | if (expect_false (!mg)) |
|
|
622 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
|
|
623 | |
|
|
624 | av = (AV *)mg->mg_obj; |
|
|
625 | |
|
|
626 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
|
|
627 | av_extend (av, AvFILLp (av) + 1); |
|
|
628 | |
|
|
629 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
|
|
630 | } |
|
|
631 | |
|
|
632 | /** load & save, init *******************************************************/ |
|
|
633 | |
|
|
634 | /* swap sv heads, at least logically */ |
|
|
635 | static void |
|
|
636 | swap_svs (pTHX_ Coro__State c) |
|
|
637 | { |
|
|
638 | int i; |
|
|
639 | |
|
|
640 | for (i = 0; i <= AvFILLp (c->swap_sv); ) |
148 | { |
641 | { |
149 | I32 i = AvFILLp(padlist); |
642 | SV *a = AvARRAY (c->swap_sv)[i++]; |
150 | while (i >= 0) |
643 | SV *b = AvARRAY (c->swap_sv)[i++]; |
|
|
644 | |
|
|
645 | const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */ |
|
|
646 | SV tmp; |
|
|
647 | |
|
|
648 | /* swap sv_any */ |
|
|
649 | SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp); |
|
|
650 | |
|
|
651 | /* swap sv_flags */ |
|
|
652 | SvFLAGS (&tmp) = SvFLAGS (a); |
|
|
653 | SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep); |
|
|
654 | SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep); |
|
|
655 | |
|
|
656 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
657 | /* perl 5.10 complicates this _quite_ a bit, but it also is |
|
|
658 | * much faster, so no quarrels here. alternatively, we could |
|
|
659 | * sv_upgrade to avoid this. |
|
|
660 | */ |
151 | { |
661 | { |
152 | SV **svp = av_fetch(padlist, i--, FALSE); |
662 | /* swap sv_u */ |
153 | SV *sv = svp ? *svp : Nullsv; |
663 | tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u; |
154 | if (sv) |
664 | |
155 | SvREFCNT_dec(sv); |
665 | /* if SvANY points to the head, we need to adjust the pointers, |
|
|
666 | * as the pointer for a still points to b, and maybe vice versa. |
|
|
667 | */ |
|
|
668 | #define svany_in_head(type) \ |
|
|
669 | (((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type))) |
|
|
670 | |
|
|
671 | if (svany_in_head (SvTYPE (a))) |
|
|
672 | SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a); |
|
|
673 | |
|
|
674 | if (svany_in_head (SvTYPE (b))) |
|
|
675 | SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b); |
156 | } |
676 | } |
|
|
677 | #endif |
|
|
678 | } |
|
|
679 | } |
157 | |
680 | |
158 | SvREFCNT_dec((SV*)padlist); |
681 | #define SWAP_SVS(coro) \ |
|
|
682 | if (expect_false ((coro)->swap_sv)) \ |
|
|
683 | swap_svs (aTHX_ (coro)) |
|
|
684 | |
|
|
685 | static void |
|
|
686 | on_enterleave_call (pTHX_ SV *cb); |
|
|
687 | |
|
|
688 | static void |
|
|
689 | load_perl (pTHX_ Coro__State c) |
|
|
690 | { |
|
|
691 | perl_slots *slot = c->slot; |
|
|
692 | c->slot = 0; |
|
|
693 | |
|
|
694 | PL_mainstack = c->mainstack; |
|
|
695 | |
|
|
696 | GvSV (PL_defgv) = slot->defsv; |
|
|
697 | GvAV (PL_defgv) = slot->defav; |
|
|
698 | GvSV (PL_errgv) = slot->errsv; |
|
|
699 | GvSV (irsgv) = slot->irsgv; |
|
|
700 | GvHV (PL_hintgv) = slot->hinthv; |
|
|
701 | |
|
|
702 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
703 | # include "state.h" |
|
|
704 | #undef VAR |
|
|
705 | |
|
|
706 | { |
|
|
707 | dSP; |
|
|
708 | |
|
|
709 | CV *cv; |
|
|
710 | |
|
|
711 | /* now do the ugly restore mess */ |
|
|
712 | while (expect_true (cv = (CV *)POPs)) |
|
|
713 | { |
|
|
714 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
|
|
715 | CvDEPTH (cv) = PTR2IV (POPs); |
|
|
716 | CvPADLIST (cv) = (AV *)POPs; |
|
|
717 | } |
|
|
718 | |
|
|
719 | PUTBACK; |
159 | } |
720 | } |
160 | } |
|
|
161 | |
721 | |
162 | /* the next tow functions merely cache the padlists */ |
722 | slf_frame = c->slf_frame; |
163 | STATIC void |
723 | CORO_THROW = c->except; |
164 | get_padlist (CV *cv) |
|
|
165 | { |
|
|
166 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
|
|
167 | |
724 | |
168 | if (he && AvFILLp ((AV *)*he) >= 0) |
725 | if (expect_false (enable_times)) |
169 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
|
|
170 | else |
|
|
171 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
|
|
172 | } |
|
|
173 | |
|
|
174 | STATIC void |
|
|
175 | put_padlist (CV *cv) |
|
|
176 | { |
|
|
177 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
|
|
178 | |
|
|
179 | if (SvTYPE (*he) != SVt_PVAV) |
|
|
180 | { |
|
|
181 | SvREFCNT_dec (*he); |
|
|
182 | *he = (SV *)newAV (); |
|
|
183 | } |
726 | { |
|
|
727 | if (expect_false (!times_valid)) |
|
|
728 | coro_times_update (); |
184 | |
729 | |
185 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
730 | coro_times_sub (c); |
186 | } |
731 | } |
187 | |
732 | |
|
|
733 | if (expect_false (c->on_enter)) |
|
|
734 | { |
|
|
735 | int i; |
|
|
736 | |
|
|
737 | for (i = 0; i <= AvFILLp (c->on_enter); ++i) |
|
|
738 | on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]); |
|
|
739 | } |
|
|
740 | |
|
|
741 | SWAP_SVS (c); |
|
|
742 | } |
|
|
743 | |
188 | static void |
744 | static void |
189 | save_state(pTHX_ Coro__State c) |
745 | save_perl (pTHX_ Coro__State c) |
190 | { |
746 | { |
|
|
747 | SWAP_SVS (c); |
|
|
748 | |
|
|
749 | if (expect_false (c->on_leave)) |
|
|
750 | { |
|
|
751 | int i; |
|
|
752 | |
|
|
753 | for (i = AvFILLp (c->on_leave); i >= 0; --i) |
|
|
754 | on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]); |
|
|
755 | } |
|
|
756 | |
|
|
757 | times_valid = 0; |
|
|
758 | |
|
|
759 | if (expect_false (enable_times)) |
|
|
760 | { |
|
|
761 | coro_times_update (); times_valid = 1; |
|
|
762 | coro_times_add (c); |
|
|
763 | } |
|
|
764 | |
|
|
765 | c->except = CORO_THROW; |
|
|
766 | c->slf_frame = slf_frame; |
|
|
767 | |
191 | { |
768 | { |
192 | dSP; |
769 | dSP; |
193 | I32 cxix = cxstack_ix; |
770 | I32 cxix = cxstack_ix; |
|
|
771 | PERL_CONTEXT *ccstk = cxstack; |
194 | PERL_SI *top_si = PL_curstackinfo; |
772 | PERL_SI *top_si = PL_curstackinfo; |
195 | PERL_CONTEXT *ccstk = cxstack; |
|
|
196 | |
773 | |
197 | /* |
774 | /* |
198 | * the worst thing you can imagine happens first - we have to save |
775 | * the worst thing you can imagine happens first - we have to save |
199 | * (and reinitialize) all cv's in the whole callchain :( |
776 | * (and reinitialize) all cv's in the whole callchain :( |
200 | */ |
777 | */ |
201 | |
778 | |
202 | PUSHs (Nullsv); |
779 | XPUSHs (Nullsv); |
203 | /* this loop was inspired by pp_caller */ |
780 | /* this loop was inspired by pp_caller */ |
204 | for (;;) |
781 | for (;;) |
205 | { |
782 | { |
206 | while (cxix >= 0) |
783 | while (expect_true (cxix >= 0)) |
207 | { |
784 | { |
208 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
785 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
209 | |
786 | |
210 | if (CxTYPE(cx) == CXt_SUB) |
787 | if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT)) |
211 | { |
788 | { |
212 | CV *cv = cx->blk_sub.cv; |
789 | CV *cv = cx->blk_sub.cv; |
|
|
790 | |
213 | if (CvDEPTH(cv)) |
791 | if (expect_true (CvDEPTH (cv))) |
214 | { |
792 | { |
215 | #ifdef USE_THREADS |
|
|
216 | XPUSHs ((SV *)CvOWNER(cv)); |
|
|
217 | #endif |
|
|
218 | EXTEND (SP, 3); |
793 | EXTEND (SP, 3); |
219 | PUSHs ((SV *)CvDEPTH(cv)); |
|
|
220 | PUSHs ((SV *)CvPADLIST(cv)); |
794 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
795 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
221 | PUSHs ((SV *)cv); |
796 | PUSHs ((SV *)cv); |
222 | |
797 | |
223 | get_padlist (cv); |
|
|
224 | |
|
|
225 | CvDEPTH(cv) = 0; |
798 | CvDEPTH (cv) = 0; |
226 | #ifdef USE_THREADS |
799 | get_padlist (aTHX_ cv); |
227 | CvOWNER(cv) = 0; |
|
|
228 | error must unlock this cv etc.. etc... |
|
|
229 | if you are here wondering about this error message then |
|
|
230 | the reason is that it will not work as advertised yet |
|
|
231 | #endif |
|
|
232 | } |
800 | } |
233 | } |
801 | } |
234 | else if (CxTYPE(cx) == CXt_FORMAT) |
802 | } |
|
|
803 | |
|
|
804 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
|
|
805 | break; |
|
|
806 | |
|
|
807 | top_si = top_si->si_prev; |
|
|
808 | ccstk = top_si->si_cxstack; |
|
|
809 | cxix = top_si->si_cxix; |
|
|
810 | } |
|
|
811 | |
|
|
812 | PUTBACK; |
|
|
813 | } |
|
|
814 | |
|
|
815 | /* allocate some space on the context stack for our purposes */ |
|
|
816 | if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max)) |
|
|
817 | { |
|
|
818 | unsigned int i; |
|
|
819 | |
|
|
820 | for (i = 0; i < SLOT_COUNT; ++i) |
|
|
821 | CXINC; |
|
|
822 | |
|
|
823 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
|
|
824 | } |
|
|
825 | |
|
|
826 | c->mainstack = PL_mainstack; |
|
|
827 | |
|
|
828 | { |
|
|
829 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
|
|
830 | |
|
|
831 | slot->defav = GvAV (PL_defgv); |
|
|
832 | slot->defsv = DEFSV; |
|
|
833 | slot->errsv = ERRSV; |
|
|
834 | slot->irsgv = GvSV (irsgv); |
|
|
835 | slot->hinthv = GvHV (PL_hintgv); |
|
|
836 | |
|
|
837 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
838 | # include "state.h" |
|
|
839 | #undef VAR |
|
|
840 | } |
|
|
841 | } |
|
|
842 | |
|
|
843 | /* |
|
|
844 | * allocate various perl stacks. This is almost an exact copy |
|
|
845 | * of perl.c:init_stacks, except that it uses less memory |
|
|
846 | * on the (sometimes correct) assumption that coroutines do |
|
|
847 | * not usually need a lot of stackspace. |
|
|
848 | */ |
|
|
849 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
850 | # define coro_init_stacks(thx) init_stacks () |
|
|
851 | #else |
|
|
852 | static void |
|
|
853 | coro_init_stacks (pTHX) |
|
|
854 | { |
|
|
855 | PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */ |
|
|
856 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
857 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
858 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
859 | |
|
|
860 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
861 | PL_stack_sp = PL_stack_base; |
|
|
862 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
863 | |
|
|
864 | New(50,PL_tmps_stack,32,SV*); |
|
|
865 | PL_tmps_floor = -1; |
|
|
866 | PL_tmps_ix = -1; |
|
|
867 | PL_tmps_max = 32; |
|
|
868 | |
|
|
869 | New(54,PL_markstack,16,I32); |
|
|
870 | PL_markstack_ptr = PL_markstack; |
|
|
871 | PL_markstack_max = PL_markstack + 16; |
|
|
872 | |
|
|
873 | #ifdef SET_MARK_OFFSET |
|
|
874 | SET_MARK_OFFSET; |
|
|
875 | #endif |
|
|
876 | |
|
|
877 | New(54,PL_scopestack,8,I32); |
|
|
878 | PL_scopestack_ix = 0; |
|
|
879 | PL_scopestack_max = 8; |
|
|
880 | |
|
|
881 | New(54,PL_savestack,24,ANY); |
|
|
882 | PL_savestack_ix = 0; |
|
|
883 | PL_savestack_max = 24; |
|
|
884 | |
|
|
885 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
886 | New(54,PL_retstack,4,OP*); |
|
|
887 | PL_retstack_ix = 0; |
|
|
888 | PL_retstack_max = 4; |
|
|
889 | #endif |
|
|
890 | } |
|
|
891 | #endif |
|
|
892 | |
|
|
893 | /* |
|
|
894 | * destroy the stacks, the callchain etc... |
|
|
895 | */ |
|
|
896 | static void |
|
|
897 | coro_destruct_stacks (pTHX) |
|
|
898 | { |
|
|
899 | while (PL_curstackinfo->si_next) |
|
|
900 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
901 | |
|
|
902 | while (PL_curstackinfo) |
|
|
903 | { |
|
|
904 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
905 | |
|
|
906 | if (!IN_DESTRUCT) |
|
|
907 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
908 | |
|
|
909 | Safefree (PL_curstackinfo->si_cxstack); |
|
|
910 | Safefree (PL_curstackinfo); |
|
|
911 | PL_curstackinfo = p; |
|
|
912 | } |
|
|
913 | |
|
|
914 | Safefree (PL_tmps_stack); |
|
|
915 | Safefree (PL_markstack); |
|
|
916 | Safefree (PL_scopestack); |
|
|
917 | Safefree (PL_savestack); |
|
|
918 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
919 | Safefree (PL_retstack); |
|
|
920 | #endif |
|
|
921 | } |
|
|
922 | |
|
|
923 | #define CORO_RSS \ |
|
|
924 | rss += sizeof (SYM (curstackinfo)); \ |
|
|
925 | rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
|
|
926 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
|
|
927 | rss += SYM (tmps_max) * sizeof (SV *); \ |
|
|
928 | rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
|
|
929 | rss += SYM (scopestack_max) * sizeof (I32); \ |
|
|
930 | rss += SYM (savestack_max) * sizeof (ANY); |
|
|
931 | |
|
|
932 | static size_t |
|
|
933 | coro_rss (pTHX_ struct coro *coro) |
|
|
934 | { |
|
|
935 | size_t rss = sizeof (*coro); |
|
|
936 | |
|
|
937 | if (coro->mainstack) |
|
|
938 | { |
|
|
939 | if (coro->flags & CF_RUNNING) |
|
|
940 | { |
|
|
941 | #define SYM(sym) PL_ ## sym |
|
|
942 | CORO_RSS; |
|
|
943 | #undef SYM |
|
|
944 | } |
|
|
945 | else |
|
|
946 | { |
|
|
947 | #define SYM(sym) coro->slot->sym |
|
|
948 | CORO_RSS; |
|
|
949 | #undef SYM |
|
|
950 | } |
|
|
951 | } |
|
|
952 | |
|
|
953 | return rss; |
|
|
954 | } |
|
|
955 | |
|
|
956 | /** coroutine stack handling ************************************************/ |
|
|
957 | |
|
|
958 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
959 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
960 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
961 | |
|
|
962 | /* apparently < 5.8.8 */ |
|
|
963 | #ifndef MgPV_nolen_const |
|
|
964 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
965 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
966 | (const char*)(mg)->mg_ptr) |
|
|
967 | #endif |
|
|
968 | |
|
|
969 | /* |
|
|
970 | * This overrides the default magic get method of %SIG elements. |
|
|
971 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
972 | * and instead of trying to save and restore the hash elements, we just provide |
|
|
973 | * readback here. |
|
|
974 | */ |
|
|
975 | static int |
|
|
976 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
977 | { |
|
|
978 | const char *s = MgPV_nolen_const (mg); |
|
|
979 | |
|
|
980 | if (*s == '_') |
|
|
981 | { |
|
|
982 | SV **svp = 0; |
|
|
983 | |
|
|
984 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
985 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
986 | |
|
|
987 | if (svp) |
|
|
988 | { |
|
|
989 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
990 | return 0; |
|
|
991 | } |
|
|
992 | } |
|
|
993 | |
|
|
994 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
995 | } |
|
|
996 | |
|
|
997 | static int |
|
|
998 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
999 | { |
|
|
1000 | const char *s = MgPV_nolen_const (mg); |
|
|
1001 | |
|
|
1002 | if (*s == '_') |
|
|
1003 | { |
|
|
1004 | SV **svp = 0; |
|
|
1005 | |
|
|
1006 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
1007 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
1008 | |
|
|
1009 | if (svp) |
|
|
1010 | { |
|
|
1011 | SV *old = *svp; |
|
|
1012 | *svp = 0; |
|
|
1013 | SvREFCNT_dec (old); |
|
|
1014 | return 0; |
|
|
1015 | } |
|
|
1016 | } |
|
|
1017 | |
|
|
1018 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
1019 | } |
|
|
1020 | |
|
|
1021 | static int |
|
|
1022 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
1023 | { |
|
|
1024 | const char *s = MgPV_nolen_const (mg); |
|
|
1025 | |
|
|
1026 | if (*s == '_') |
|
|
1027 | { |
|
|
1028 | SV **svp = 0; |
|
|
1029 | |
|
|
1030 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
1031 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
1032 | |
|
|
1033 | if (svp) |
|
|
1034 | { |
|
|
1035 | SV *old = *svp; |
|
|
1036 | *svp = SvOK (sv) ? newSVsv (sv) : 0; |
|
|
1037 | SvREFCNT_dec (old); |
|
|
1038 | return 0; |
|
|
1039 | } |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
1043 | } |
|
|
1044 | |
|
|
1045 | static void |
|
|
1046 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
1047 | { |
|
|
1048 | /* kind of mega-hacky, but works */ |
|
|
1049 | ta->next = ta->prev = (struct coro *)ta; |
|
|
1050 | } |
|
|
1051 | |
|
|
1052 | static int |
|
|
1053 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
1054 | { |
|
|
1055 | return 0; |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | static int |
|
|
1059 | slf_check_repeat (pTHX_ struct CoroSLF *frame) |
|
|
1060 | { |
|
|
1061 | return 1; |
|
|
1062 | } |
|
|
1063 | |
|
|
1064 | static UNOP init_perl_op; |
|
|
1065 | |
|
|
1066 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
1067 | init_perl (pTHX_ struct coro *coro) |
|
|
1068 | { |
|
|
1069 | /* |
|
|
1070 | * emulate part of the perl startup here. |
|
|
1071 | */ |
|
|
1072 | coro_init_stacks (aTHX); |
|
|
1073 | |
|
|
1074 | PL_runops = RUNOPS_DEFAULT; |
|
|
1075 | PL_curcop = &PL_compiling; |
|
|
1076 | PL_in_eval = EVAL_NULL; |
|
|
1077 | PL_comppad = 0; |
|
|
1078 | PL_comppad_name = 0; |
|
|
1079 | PL_comppad_name_fill = 0; |
|
|
1080 | PL_comppad_name_floor = 0; |
|
|
1081 | PL_curpm = 0; |
|
|
1082 | PL_curpad = 0; |
|
|
1083 | PL_localizing = 0; |
|
|
1084 | PL_restartop = 0; |
|
|
1085 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
1086 | PL_parser = 0; |
|
|
1087 | #endif |
|
|
1088 | PL_hints = 0; |
|
|
1089 | |
|
|
1090 | /* recreate the die/warn hooks */ |
|
|
1091 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
1092 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
1093 | |
|
|
1094 | GvSV (PL_defgv) = newSV (0); |
|
|
1095 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
1096 | GvSV (PL_errgv) = newSV (0); |
|
|
1097 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
1098 | GvHV (PL_hintgv) = 0; |
|
|
1099 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
1100 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
1101 | |
|
|
1102 | { |
|
|
1103 | dSP; |
|
|
1104 | UNOP myop; |
|
|
1105 | |
|
|
1106 | Zero (&myop, 1, UNOP); |
|
|
1107 | myop.op_next = Nullop; |
|
|
1108 | myop.op_type = OP_ENTERSUB; |
|
|
1109 | myop.op_flags = OPf_WANT_VOID; |
|
|
1110 | |
|
|
1111 | PUSHMARK (SP); |
|
|
1112 | PUSHs ((SV *)coro->startcv); |
|
|
1113 | PUTBACK; |
|
|
1114 | PL_op = (OP *)&myop; |
|
|
1115 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1116 | } |
|
|
1117 | |
|
|
1118 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
1119 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
1120 | */ |
|
|
1121 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
1122 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
1123 | slf_frame.destroy = 0; |
|
|
1124 | |
|
|
1125 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
1126 | init_perl_op.op_next = PL_op; |
|
|
1127 | init_perl_op.op_type = OP_ENTERSUB; |
|
|
1128 | init_perl_op.op_ppaddr = pp_slf; |
|
|
1129 | /* no flags etc. required, as an init function won't be called */ |
|
|
1130 | |
|
|
1131 | PL_op = (OP *)&init_perl_op; |
|
|
1132 | |
|
|
1133 | /* copy throw, in case it was set before init_perl */ |
|
|
1134 | CORO_THROW = coro->except; |
|
|
1135 | |
|
|
1136 | SWAP_SVS (coro); |
|
|
1137 | |
|
|
1138 | if (expect_false (enable_times)) |
|
|
1139 | { |
|
|
1140 | coro_times_update (); |
|
|
1141 | coro_times_sub (coro); |
|
|
1142 | } |
|
|
1143 | } |
|
|
1144 | |
|
|
1145 | static void |
|
|
1146 | coro_unwind_stacks (pTHX) |
|
|
1147 | { |
|
|
1148 | if (!IN_DESTRUCT) |
|
|
1149 | { |
|
|
1150 | /* restore all saved variables and stuff */ |
|
|
1151 | LEAVE_SCOPE (0); |
|
|
1152 | assert (PL_tmps_floor == -1); |
|
|
1153 | |
|
|
1154 | /* free all temporaries */ |
|
|
1155 | FREETMPS; |
|
|
1156 | assert (PL_tmps_ix == -1); |
|
|
1157 | |
|
|
1158 | /* unwind all extra stacks */ |
|
|
1159 | POPSTACK_TO (PL_mainstack); |
|
|
1160 | |
|
|
1161 | /* unwind main stack */ |
|
|
1162 | dounwind (-1); |
|
|
1163 | } |
|
|
1164 | } |
|
|
1165 | |
|
|
1166 | static void |
|
|
1167 | destroy_perl (pTHX_ struct coro *coro) |
|
|
1168 | { |
|
|
1169 | SV *svf [9]; |
|
|
1170 | |
|
|
1171 | { |
|
|
1172 | SV *old_current = SvRV (coro_current); |
|
|
1173 | struct coro *current = SvSTATE (old_current); |
|
|
1174 | |
|
|
1175 | assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); |
|
|
1176 | |
|
|
1177 | save_perl (aTHX_ current); |
|
|
1178 | |
|
|
1179 | /* this will cause transfer_check to croak on block*/ |
|
|
1180 | SvRV_set (coro_current, (SV *)coro->hv); |
|
|
1181 | |
|
|
1182 | load_perl (aTHX_ coro); |
|
|
1183 | |
|
|
1184 | coro_unwind_stacks (aTHX); |
|
|
1185 | |
|
|
1186 | /* restore swapped sv's */ |
|
|
1187 | SWAP_SVS (coro); |
|
|
1188 | |
|
|
1189 | coro_destruct_stacks (aTHX); |
|
|
1190 | |
|
|
1191 | // now save some sv's to be free'd later |
|
|
1192 | svf [0] = GvSV (PL_defgv); |
|
|
1193 | svf [1] = (SV *)GvAV (PL_defgv); |
|
|
1194 | svf [2] = GvSV (PL_errgv); |
|
|
1195 | svf [3] = (SV *)PL_defoutgv; |
|
|
1196 | svf [4] = PL_rs; |
|
|
1197 | svf [5] = GvSV (irsgv); |
|
|
1198 | svf [6] = (SV *)GvHV (PL_hintgv); |
|
|
1199 | svf [7] = PL_diehook; |
|
|
1200 | svf [8] = PL_warnhook; |
|
|
1201 | assert (9 == sizeof (svf) / sizeof (*svf)); |
|
|
1202 | |
|
|
1203 | SvRV_set (coro_current, old_current); |
|
|
1204 | |
|
|
1205 | load_perl (aTHX_ current); |
|
|
1206 | } |
|
|
1207 | |
|
|
1208 | { |
|
|
1209 | unsigned int i; |
|
|
1210 | |
|
|
1211 | for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i) |
|
|
1212 | SvREFCNT_dec (svf [i]); |
|
|
1213 | |
|
|
1214 | SvREFCNT_dec (coro->saved_deffh); |
|
|
1215 | SvREFCNT_dec (coro->rouse_cb); |
|
|
1216 | SvREFCNT_dec (coro->invoke_cb); |
|
|
1217 | SvREFCNT_dec (coro->invoke_av); |
|
|
1218 | } |
|
|
1219 | } |
|
|
1220 | |
|
|
1221 | INLINE void |
|
|
1222 | free_coro_mortal (pTHX) |
|
|
1223 | { |
|
|
1224 | if (expect_true (coro_mortal)) |
|
|
1225 | { |
|
|
1226 | SvREFCNT_dec ((SV *)coro_mortal); |
|
|
1227 | coro_mortal = 0; |
|
|
1228 | } |
|
|
1229 | } |
|
|
1230 | |
|
|
1231 | static int |
|
|
1232 | runops_trace (pTHX) |
|
|
1233 | { |
|
|
1234 | COP *oldcop = 0; |
|
|
1235 | int oldcxix = -2; |
|
|
1236 | |
|
|
1237 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
1238 | { |
|
|
1239 | PERL_ASYNC_CHECK (); |
|
|
1240 | |
|
|
1241 | if (cctx_current->flags & CC_TRACE_ALL) |
|
|
1242 | { |
|
|
1243 | if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB) |
|
|
1244 | { |
|
|
1245 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1246 | SV **bot, **top; |
|
|
1247 | AV *av = newAV (); /* return values */ |
|
|
1248 | SV **cb; |
|
|
1249 | dSP; |
|
|
1250 | |
|
|
1251 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1252 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1253 | if (isGV (gv)) |
|
|
1254 | gv_efullname3 (fullname, gv, 0); |
|
|
1255 | |
|
|
1256 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
1257 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
1258 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
1259 | : bot; |
|
|
1260 | |
|
|
1261 | av_extend (av, top - bot); |
|
|
1262 | while (bot < top) |
|
|
1263 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
1264 | |
|
|
1265 | PL_runops = RUNOPS_DEFAULT; |
|
|
1266 | ENTER; |
|
|
1267 | SAVETMPS; |
|
|
1268 | EXTEND (SP, 3); |
|
|
1269 | PUSHMARK (SP); |
|
|
1270 | PUSHs (&PL_sv_no); |
|
|
1271 | PUSHs (fullname); |
|
|
1272 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
1273 | PUTBACK; |
|
|
1274 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1275 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1276 | SPAGAIN; |
|
|
1277 | FREETMPS; |
|
|
1278 | LEAVE; |
|
|
1279 | PL_runops = runops_trace; |
|
|
1280 | } |
|
|
1281 | |
|
|
1282 | if (oldcop != PL_curcop) |
|
|
1283 | { |
|
|
1284 | oldcop = PL_curcop; |
|
|
1285 | |
|
|
1286 | if (PL_curcop != &PL_compiling) |
|
|
1287 | { |
|
|
1288 | SV **cb; |
|
|
1289 | |
|
|
1290 | if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) |
|
|
1291 | { |
|
|
1292 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1293 | |
|
|
1294 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
1295 | { |
|
|
1296 | dSP; |
|
|
1297 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1298 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1299 | |
|
|
1300 | if (isGV (gv)) |
|
|
1301 | gv_efullname3 (fullname, gv, 0); |
|
|
1302 | |
|
|
1303 | PL_runops = RUNOPS_DEFAULT; |
|
|
1304 | ENTER; |
|
|
1305 | SAVETMPS; |
|
|
1306 | EXTEND (SP, 3); |
|
|
1307 | PUSHMARK (SP); |
|
|
1308 | PUSHs (&PL_sv_yes); |
|
|
1309 | PUSHs (fullname); |
|
|
1310 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1311 | PUTBACK; |
|
|
1312 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1313 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1314 | SPAGAIN; |
|
|
1315 | FREETMPS; |
|
|
1316 | LEAVE; |
|
|
1317 | PL_runops = runops_trace; |
|
|
1318 | } |
|
|
1319 | |
|
|
1320 | oldcxix = cxstack_ix; |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | if (cctx_current->flags & CC_TRACE_LINE) |
|
|
1324 | { |
|
|
1325 | dSP; |
|
|
1326 | |
|
|
1327 | PL_runops = RUNOPS_DEFAULT; |
|
|
1328 | ENTER; |
|
|
1329 | SAVETMPS; |
|
|
1330 | EXTEND (SP, 3); |
|
|
1331 | PL_runops = RUNOPS_DEFAULT; |
|
|
1332 | PUSHMARK (SP); |
|
|
1333 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1334 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1335 | PUTBACK; |
|
|
1336 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1337 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1338 | SPAGAIN; |
|
|
1339 | FREETMPS; |
|
|
1340 | LEAVE; |
|
|
1341 | PL_runops = runops_trace; |
|
|
1342 | } |
|
|
1343 | } |
|
|
1344 | } |
|
|
1345 | } |
|
|
1346 | } |
|
|
1347 | |
|
|
1348 | TAINT_NOT; |
|
|
1349 | return 0; |
|
|
1350 | } |
|
|
1351 | |
|
|
1352 | static struct CoroSLF cctx_ssl_frame; |
|
|
1353 | |
|
|
1354 | static void |
|
|
1355 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1356 | { |
|
|
1357 | ta->prev = 0; |
|
|
1358 | } |
|
|
1359 | |
|
|
1360 | static int |
|
|
1361 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
|
|
1362 | { |
|
|
1363 | *frame = cctx_ssl_frame; |
|
|
1364 | |
|
|
1365 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1366 | } |
|
|
1367 | |
|
|
1368 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
|
|
1369 | static void NOINLINE |
|
|
1370 | cctx_prepare (pTHX) |
|
|
1371 | { |
|
|
1372 | PL_top_env = &PL_start_env; |
|
|
1373 | |
|
|
1374 | if (cctx_current->flags & CC_TRACE) |
|
|
1375 | PL_runops = runops_trace; |
|
|
1376 | |
|
|
1377 | /* we already must be executing an SLF op, there is no other valid way |
|
|
1378 | * that can lead to creation of a new cctx */ |
|
|
1379 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1380 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
|
|
1381 | |
|
|
1382 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
|
|
1383 | cctx_ssl_frame = slf_frame; |
|
|
1384 | |
|
|
1385 | slf_frame.prepare = slf_prepare_set_stacklevel; |
|
|
1386 | slf_frame.check = slf_check_set_stacklevel; |
|
|
1387 | } |
|
|
1388 | |
|
|
1389 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1390 | INLINE void |
|
|
1391 | transfer_tail (pTHX) |
|
|
1392 | { |
|
|
1393 | free_coro_mortal (aTHX); |
|
|
1394 | } |
|
|
1395 | |
|
|
1396 | /* |
|
|
1397 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1398 | */ |
|
|
1399 | static void |
|
|
1400 | cctx_run (void *arg) |
|
|
1401 | { |
|
|
1402 | #ifdef USE_ITHREADS |
|
|
1403 | # if CORO_PTHREAD |
|
|
1404 | PERL_SET_CONTEXT (coro_thx); |
|
|
1405 | # endif |
|
|
1406 | #endif |
|
|
1407 | { |
|
|
1408 | dTHX; |
|
|
1409 | |
|
|
1410 | /* normally we would need to skip the entersub here */ |
|
|
1411 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1412 | /* PL_nop = PL_nop->op_next */ |
|
|
1413 | |
|
|
1414 | /* inject a fake subroutine call to cctx_init */ |
|
|
1415 | cctx_prepare (aTHX); |
|
|
1416 | |
|
|
1417 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1418 | transfer_tail (aTHX); |
|
|
1419 | |
|
|
1420 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1421 | PL_restartop = PL_op; |
|
|
1422 | perl_run (PL_curinterp); |
|
|
1423 | /* |
|
|
1424 | * Unfortunately, there is no way to get at the return values of the |
|
|
1425 | * coro body here, as perl_run destroys these. Likewise, we cannot catch |
|
|
1426 | * runtime errors here, as this is just a random interpreter, not a thread. |
|
|
1427 | */ |
|
|
1428 | |
|
|
1429 | /* |
|
|
1430 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1431 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1432 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1433 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1434 | * coroutine as Coro has no such concept. |
|
|
1435 | * This actually isn't valid with the pthread backend, but OSes requiring |
|
|
1436 | * that backend are too broken to do it in a standards-compliant way. |
|
|
1437 | */ |
|
|
1438 | PL_top_env = main_top_env; |
|
|
1439 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1440 | } |
|
|
1441 | } |
|
|
1442 | |
|
|
1443 | static coro_cctx * |
|
|
1444 | cctx_new () |
|
|
1445 | { |
|
|
1446 | coro_cctx *cctx; |
|
|
1447 | |
|
|
1448 | ++cctx_count; |
|
|
1449 | New (0, cctx, 1, coro_cctx); |
|
|
1450 | |
|
|
1451 | cctx->gen = cctx_gen; |
|
|
1452 | cctx->flags = 0; |
|
|
1453 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1454 | |
|
|
1455 | return cctx; |
|
|
1456 | } |
|
|
1457 | |
|
|
1458 | /* create a new cctx only suitable as source */ |
|
|
1459 | static coro_cctx * |
|
|
1460 | cctx_new_empty () |
|
|
1461 | { |
|
|
1462 | coro_cctx *cctx = cctx_new (); |
|
|
1463 | |
|
|
1464 | cctx->sptr = 0; |
|
|
1465 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1466 | |
|
|
1467 | return cctx; |
|
|
1468 | } |
|
|
1469 | |
|
|
1470 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1471 | static coro_cctx * |
|
|
1472 | cctx_new_run () |
|
|
1473 | { |
|
|
1474 | coro_cctx *cctx = cctx_new (); |
|
|
1475 | void *stack_start; |
|
|
1476 | size_t stack_size; |
|
|
1477 | |
|
|
1478 | #if HAVE_MMAP |
|
|
1479 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1480 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1481 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1482 | |
|
|
1483 | if (cctx->sptr != (void *)-1) |
|
|
1484 | { |
|
|
1485 | #if CORO_STACKGUARD |
|
|
1486 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1487 | #endif |
|
|
1488 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1489 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1490 | cctx->flags |= CC_MAPPED; |
|
|
1491 | } |
|
|
1492 | else |
|
|
1493 | #endif |
|
|
1494 | { |
|
|
1495 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1496 | New (0, cctx->sptr, cctx_stacksize, long); |
|
|
1497 | |
|
|
1498 | if (!cctx->sptr) |
|
|
1499 | { |
|
|
1500 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1501 | _exit (EXIT_FAILURE); |
|
|
1502 | } |
|
|
1503 | |
|
|
1504 | stack_start = cctx->sptr; |
|
|
1505 | stack_size = cctx->ssize; |
|
|
1506 | } |
|
|
1507 | |
|
|
1508 | #if CORO_USE_VALGRIND |
|
|
1509 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1510 | #endif |
|
|
1511 | |
|
|
1512 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1513 | |
|
|
1514 | return cctx; |
|
|
1515 | } |
|
|
1516 | |
|
|
1517 | static void |
|
|
1518 | cctx_destroy (coro_cctx *cctx) |
|
|
1519 | { |
|
|
1520 | if (!cctx) |
|
|
1521 | return; |
|
|
1522 | |
|
|
1523 | assert (("FATAL: tried to destroy current cctx", cctx != cctx_current)); |
|
|
1524 | |
|
|
1525 | --cctx_count; |
|
|
1526 | coro_destroy (&cctx->cctx); |
|
|
1527 | |
|
|
1528 | /* coro_transfer creates new, empty cctx's */ |
|
|
1529 | if (cctx->sptr) |
|
|
1530 | { |
|
|
1531 | #if CORO_USE_VALGRIND |
|
|
1532 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1533 | #endif |
|
|
1534 | |
|
|
1535 | #if HAVE_MMAP |
|
|
1536 | if (cctx->flags & CC_MAPPED) |
|
|
1537 | munmap (cctx->sptr, cctx->ssize); |
|
|
1538 | else |
|
|
1539 | #endif |
|
|
1540 | Safefree (cctx->sptr); |
|
|
1541 | } |
|
|
1542 | |
|
|
1543 | Safefree (cctx); |
|
|
1544 | } |
|
|
1545 | |
|
|
1546 | /* wether this cctx should be destructed */ |
|
|
1547 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1548 | |
|
|
1549 | static coro_cctx * |
|
|
1550 | cctx_get (pTHX) |
|
|
1551 | { |
|
|
1552 | while (expect_true (cctx_first)) |
|
|
1553 | { |
|
|
1554 | coro_cctx *cctx = cctx_first; |
|
|
1555 | cctx_first = cctx->next; |
|
|
1556 | --cctx_idle; |
|
|
1557 | |
|
|
1558 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1559 | return cctx; |
|
|
1560 | |
|
|
1561 | cctx_destroy (cctx); |
|
|
1562 | } |
|
|
1563 | |
|
|
1564 | return cctx_new_run (); |
|
|
1565 | } |
|
|
1566 | |
|
|
1567 | static void |
|
|
1568 | cctx_put (coro_cctx *cctx) |
|
|
1569 | { |
|
|
1570 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1571 | |
|
|
1572 | /* free another cctx if overlimit */ |
|
|
1573 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1574 | { |
|
|
1575 | coro_cctx *first = cctx_first; |
|
|
1576 | cctx_first = first->next; |
|
|
1577 | --cctx_idle; |
|
|
1578 | |
|
|
1579 | cctx_destroy (first); |
|
|
1580 | } |
|
|
1581 | |
|
|
1582 | ++cctx_idle; |
|
|
1583 | cctx->next = cctx_first; |
|
|
1584 | cctx_first = cctx; |
|
|
1585 | } |
|
|
1586 | |
|
|
1587 | /** coroutine switching *****************************************************/ |
|
|
1588 | |
|
|
1589 | static void |
|
|
1590 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1591 | { |
|
|
1592 | /* TODO: throwing up here is considered harmful */ |
|
|
1593 | |
|
|
1594 | if (expect_true (prev != next)) |
|
|
1595 | { |
|
|
1596 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1597 | croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,"); |
|
|
1598 | |
|
|
1599 | if (expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED))) |
|
|
1600 | croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,"); |
|
|
1601 | |
|
|
1602 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1603 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1604 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1605 | #endif |
|
|
1606 | } |
|
|
1607 | } |
|
|
1608 | |
|
|
1609 | /* always use the TRANSFER macro */ |
|
|
1610 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
|
|
1611 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1612 | { |
|
|
1613 | dSTACKLEVEL; |
|
|
1614 | |
|
|
1615 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1616 | if (expect_false (!prev)) |
|
|
1617 | { |
|
|
1618 | cctx_current->idle_sp = STACKLEVEL; |
|
|
1619 | assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1620 | } |
|
|
1621 | else if (expect_true (prev != next)) |
|
|
1622 | { |
|
|
1623 | coro_cctx *cctx_prev; |
|
|
1624 | |
|
|
1625 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1626 | { |
|
|
1627 | /* create a new empty/source context */ |
|
|
1628 | prev->flags &= ~CF_NEW; |
|
|
1629 | prev->flags |= CF_RUNNING; |
|
|
1630 | } |
|
|
1631 | |
|
|
1632 | prev->flags &= ~CF_RUNNING; |
|
|
1633 | next->flags |= CF_RUNNING; |
|
|
1634 | |
|
|
1635 | /* first get rid of the old state */ |
|
|
1636 | save_perl (aTHX_ prev); |
|
|
1637 | |
|
|
1638 | if (expect_false (next->flags & CF_NEW)) |
|
|
1639 | { |
|
|
1640 | /* need to start coroutine */ |
|
|
1641 | next->flags &= ~CF_NEW; |
|
|
1642 | /* setup coroutine call */ |
|
|
1643 | init_perl (aTHX_ next); |
|
|
1644 | } |
|
|
1645 | else |
|
|
1646 | load_perl (aTHX_ next); |
|
|
1647 | |
|
|
1648 | /* possibly untie and reuse the cctx */ |
|
|
1649 | if (expect_true ( |
|
|
1650 | cctx_current->idle_sp == STACKLEVEL |
|
|
1651 | && !(cctx_current->flags & CC_TRACE) |
|
|
1652 | && !force_cctx |
|
|
1653 | )) |
|
|
1654 | { |
|
|
1655 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1656 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); |
|
|
1657 | |
|
|
1658 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ |
|
|
1659 | /* without this the next cctx_get might destroy the running cctx while still in use */ |
|
|
1660 | if (expect_false (CCTX_EXPIRED (cctx_current))) |
|
|
1661 | if (expect_true (!next->cctx)) |
|
|
1662 | next->cctx = cctx_get (aTHX); |
|
|
1663 | |
|
|
1664 | cctx_put (cctx_current); |
|
|
1665 | } |
|
|
1666 | else |
|
|
1667 | prev->cctx = cctx_current; |
|
|
1668 | |
|
|
1669 | ++next->usecount; |
|
|
1670 | |
|
|
1671 | cctx_prev = cctx_current; |
|
|
1672 | cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); |
|
|
1673 | |
|
|
1674 | next->cctx = 0; |
|
|
1675 | |
|
|
1676 | if (expect_false (cctx_prev != cctx_current)) |
|
|
1677 | { |
|
|
1678 | cctx_prev->top_env = PL_top_env; |
|
|
1679 | PL_top_env = cctx_current->top_env; |
|
|
1680 | coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); |
|
|
1681 | } |
|
|
1682 | |
|
|
1683 | transfer_tail (aTHX); |
|
|
1684 | } |
|
|
1685 | } |
|
|
1686 | |
|
|
1687 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1688 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1689 | |
|
|
1690 | /** high level stuff ********************************************************/ |
|
|
1691 | |
|
|
1692 | /* this function is actually Coro, not Coro::State, but we call it from here */ |
|
|
1693 | /* because it is convenient - but it hasn't been declared yet for that reason */ |
|
|
1694 | static void |
|
|
1695 | coro_call_on_destroy (pTHX_ struct coro *coro); |
|
|
1696 | |
|
|
1697 | static void |
|
|
1698 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1699 | { |
|
|
1700 | if (coro->flags & CF_ZOMBIE) |
|
|
1701 | return; |
|
|
1702 | |
|
|
1703 | slf_destroy (aTHX_ coro); |
|
|
1704 | |
|
|
1705 | coro->flags |= CF_ZOMBIE; |
|
|
1706 | |
|
|
1707 | if (coro->flags & CF_READY) |
|
|
1708 | { |
|
|
1709 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1710 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1711 | --coro_nready; |
|
|
1712 | } |
|
|
1713 | else |
|
|
1714 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1715 | |
|
|
1716 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1717 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1718 | if (coro == coro_first) coro_first = coro->next; |
|
|
1719 | |
|
|
1720 | if (coro->mainstack |
|
|
1721 | && coro->mainstack != main_mainstack |
|
|
1722 | && coro->slot |
|
|
1723 | && !PL_dirty) |
|
|
1724 | destroy_perl (aTHX_ coro); |
|
|
1725 | |
|
|
1726 | cctx_destroy (coro->cctx); |
|
|
1727 | SvREFCNT_dec (coro->startcv); |
|
|
1728 | SvREFCNT_dec (coro->args); |
|
|
1729 | SvREFCNT_dec (coro->swap_sv); |
|
|
1730 | SvREFCNT_dec (CORO_THROW); |
|
|
1731 | |
|
|
1732 | coro_call_on_destroy (coro); |
|
|
1733 | |
|
|
1734 | /* more destruction mayhem in coro_state_free */ |
|
|
1735 | } |
|
|
1736 | |
|
|
1737 | static int |
|
|
1738 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1739 | { |
|
|
1740 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1741 | mg->mg_ptr = 0; |
|
|
1742 | |
|
|
1743 | coro_state_destroy (coro); |
|
|
1744 | SvREFCNT_dec (coro->on_destroy); |
|
|
1745 | SvREFCNT_dec (coro->status); |
|
|
1746 | |
|
|
1747 | Safefree (coro); |
|
|
1748 | |
|
|
1749 | return 0; |
|
|
1750 | } |
|
|
1751 | |
|
|
1752 | static int |
|
|
1753 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1754 | { |
|
|
1755 | /* called when perl clones the current process the slow way (windows process emulation) */ |
|
|
1756 | /* WE SIMply nuke the pointers in the copy, causing perl to croak */ |
|
|
1757 | mg->mg_ptr = 0; |
|
|
1758 | mg->mg_virtual = 0; |
|
|
1759 | |
|
|
1760 | return 0; |
|
|
1761 | } |
|
|
1762 | |
|
|
1763 | static MGVTBL coro_state_vtbl = { |
|
|
1764 | 0, 0, 0, 0, |
|
|
1765 | coro_state_free, |
|
|
1766 | 0, |
|
|
1767 | #ifdef MGf_DUP |
|
|
1768 | coro_state_dup, |
|
|
1769 | #else |
|
|
1770 | # define MGf_DUP 0 |
|
|
1771 | #endif |
|
|
1772 | }; |
|
|
1773 | |
|
|
1774 | static void |
|
|
1775 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1776 | { |
|
|
1777 | ta->prev = SvSTATE (prev_sv); |
|
|
1778 | ta->next = SvSTATE (next_sv); |
|
|
1779 | TRANSFER_CHECK (*ta); |
|
|
1780 | } |
|
|
1781 | |
|
|
1782 | static void |
|
|
1783 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1784 | { |
|
|
1785 | struct coro_transfer_args ta; |
|
|
1786 | |
|
|
1787 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1788 | TRANSFER (ta, 1); |
|
|
1789 | } |
|
|
1790 | |
|
|
1791 | /** Coro ********************************************************************/ |
|
|
1792 | |
|
|
1793 | INLINE void |
|
|
1794 | coro_enq (pTHX_ struct coro *coro) |
|
|
1795 | { |
|
|
1796 | struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN]; |
|
|
1797 | |
|
|
1798 | SvREFCNT_inc_NN (coro->hv); |
|
|
1799 | |
|
|
1800 | coro->next_ready = 0; |
|
|
1801 | *(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro; |
|
|
1802 | ready [1] = coro; |
|
|
1803 | } |
|
|
1804 | |
|
|
1805 | INLINE struct coro * |
|
|
1806 | coro_deq (pTHX) |
|
|
1807 | { |
|
|
1808 | int prio; |
|
|
1809 | |
|
|
1810 | for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; ) |
|
|
1811 | { |
|
|
1812 | struct coro **ready = coro_ready [prio]; |
|
|
1813 | |
|
|
1814 | if (ready [0]) |
|
|
1815 | { |
|
|
1816 | struct coro *coro = ready [0]; |
|
|
1817 | ready [0] = coro->next_ready; |
|
|
1818 | return coro; |
|
|
1819 | } |
|
|
1820 | } |
|
|
1821 | |
|
|
1822 | return 0; |
|
|
1823 | } |
|
|
1824 | |
|
|
1825 | static void |
|
|
1826 | invoke_sv_ready_hook_helper (void) |
|
|
1827 | { |
|
|
1828 | dTHX; |
|
|
1829 | dSP; |
|
|
1830 | |
|
|
1831 | ENTER; |
|
|
1832 | SAVETMPS; |
|
|
1833 | |
|
|
1834 | PUSHMARK (SP); |
|
|
1835 | PUTBACK; |
|
|
1836 | call_sv (coro_readyhook, G_VOID | G_DISCARD); |
|
|
1837 | |
|
|
1838 | FREETMPS; |
|
|
1839 | LEAVE; |
|
|
1840 | } |
|
|
1841 | |
|
|
1842 | static int |
|
|
1843 | api_ready (pTHX_ SV *coro_sv) |
|
|
1844 | { |
|
|
1845 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1846 | |
|
|
1847 | if (coro->flags & CF_READY) |
|
|
1848 | return 0; |
|
|
1849 | |
|
|
1850 | coro->flags |= CF_READY; |
|
|
1851 | |
|
|
1852 | coro_enq (aTHX_ coro); |
|
|
1853 | |
|
|
1854 | if (!coro_nready++) |
|
|
1855 | if (coroapi.readyhook) |
|
|
1856 | coroapi.readyhook (); |
|
|
1857 | |
|
|
1858 | return 1; |
|
|
1859 | } |
|
|
1860 | |
|
|
1861 | static int |
|
|
1862 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1863 | { |
|
|
1864 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1865 | } |
|
|
1866 | |
|
|
1867 | /* expects to own a reference to next->hv */ |
|
|
1868 | INLINE void |
|
|
1869 | prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
|
|
1870 | { |
|
|
1871 | SV *prev_sv = SvRV (coro_current); |
|
|
1872 | |
|
|
1873 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1874 | ta->next = next; |
|
|
1875 | |
|
|
1876 | TRANSFER_CHECK (*ta); |
|
|
1877 | |
|
|
1878 | SvRV_set (coro_current, (SV *)next->hv); |
|
|
1879 | |
|
|
1880 | free_coro_mortal (aTHX); |
|
|
1881 | coro_mortal = prev_sv; |
|
|
1882 | } |
|
|
1883 | |
|
|
1884 | static void |
|
|
1885 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1886 | { |
|
|
1887 | for (;;) |
|
|
1888 | { |
|
|
1889 | struct coro *next = coro_deq (aTHX); |
|
|
1890 | |
|
|
1891 | if (expect_true (next)) |
|
|
1892 | { |
|
|
1893 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1894 | if (expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED))) |
|
|
1895 | SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */ |
|
|
1896 | else |
|
|
1897 | { |
|
|
1898 | next->flags &= ~CF_READY; |
|
|
1899 | --coro_nready; |
|
|
1900 | |
|
|
1901 | prepare_schedule_to (aTHX_ ta, next); |
|
|
1902 | break; |
|
|
1903 | } |
|
|
1904 | } |
|
|
1905 | else |
|
|
1906 | { |
|
|
1907 | /* nothing to schedule: call the idle handler */ |
|
|
1908 | if (SvROK (sv_idle) |
|
|
1909 | && SvOBJECT (SvRV (sv_idle))) |
|
|
1910 | { |
|
|
1911 | if (SvRV (sv_idle) == SvRV (coro_current)) |
|
|
1912 | croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught"); |
|
|
1913 | |
|
|
1914 | ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ |
|
|
1915 | api_ready (aTHX_ SvRV (sv_idle)); |
|
|
1916 | --coro_nready; |
|
|
1917 | } |
|
|
1918 | else |
|
|
1919 | { |
|
|
1920 | /* TODO: deprecated, remove, cannot work reliably *//*D*/ |
|
|
1921 | dSP; |
|
|
1922 | |
|
|
1923 | ENTER; |
|
|
1924 | SAVETMPS; |
|
|
1925 | |
|
|
1926 | PUSHMARK (SP); |
|
|
1927 | PUTBACK; |
|
|
1928 | call_sv (sv_idle, G_VOID | G_DISCARD); |
|
|
1929 | |
|
|
1930 | FREETMPS; |
|
|
1931 | LEAVE; |
|
|
1932 | } |
|
|
1933 | } |
|
|
1934 | } |
|
|
1935 | } |
|
|
1936 | |
|
|
1937 | INLINE void |
|
|
1938 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1939 | { |
|
|
1940 | api_ready (aTHX_ coro_current); |
|
|
1941 | prepare_schedule (aTHX_ ta); |
|
|
1942 | } |
|
|
1943 | |
|
|
1944 | INLINE void |
|
|
1945 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1946 | { |
|
|
1947 | SV *prev = SvRV (coro_current); |
|
|
1948 | |
|
|
1949 | if (coro_nready) |
|
|
1950 | { |
|
|
1951 | prepare_schedule (aTHX_ ta); |
|
|
1952 | api_ready (aTHX_ prev); |
|
|
1953 | } |
|
|
1954 | else |
|
|
1955 | prepare_nop (aTHX_ ta); |
|
|
1956 | } |
|
|
1957 | |
|
|
1958 | static void |
|
|
1959 | api_schedule (pTHX) |
|
|
1960 | { |
|
|
1961 | struct coro_transfer_args ta; |
|
|
1962 | |
|
|
1963 | prepare_schedule (aTHX_ &ta); |
|
|
1964 | TRANSFER (ta, 1); |
|
|
1965 | } |
|
|
1966 | |
|
|
1967 | static void |
|
|
1968 | api_schedule_to (pTHX_ SV *coro_sv) |
|
|
1969 | { |
|
|
1970 | struct coro_transfer_args ta; |
|
|
1971 | struct coro *next = SvSTATE (coro_sv); |
|
|
1972 | |
|
|
1973 | SvREFCNT_inc_NN (coro_sv); |
|
|
1974 | prepare_schedule_to (aTHX_ &ta, next); |
|
|
1975 | } |
|
|
1976 | |
|
|
1977 | static int |
|
|
1978 | api_cede (pTHX) |
|
|
1979 | { |
|
|
1980 | struct coro_transfer_args ta; |
|
|
1981 | |
|
|
1982 | prepare_cede (aTHX_ &ta); |
|
|
1983 | |
|
|
1984 | if (expect_true (ta.prev != ta.next)) |
|
|
1985 | { |
|
|
1986 | TRANSFER (ta, 1); |
|
|
1987 | return 1; |
|
|
1988 | } |
|
|
1989 | else |
|
|
1990 | return 0; |
|
|
1991 | } |
|
|
1992 | |
|
|
1993 | static int |
|
|
1994 | api_cede_notself (pTHX) |
|
|
1995 | { |
|
|
1996 | if (coro_nready) |
|
|
1997 | { |
|
|
1998 | struct coro_transfer_args ta; |
|
|
1999 | |
|
|
2000 | prepare_cede_notself (aTHX_ &ta); |
|
|
2001 | TRANSFER (ta, 1); |
|
|
2002 | return 1; |
|
|
2003 | } |
|
|
2004 | else |
|
|
2005 | return 0; |
|
|
2006 | } |
|
|
2007 | |
|
|
2008 | static void |
|
|
2009 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
2010 | { |
|
|
2011 | struct coro *coro = SvSTATE (coro_sv); |
|
|
2012 | |
|
|
2013 | if (coro->flags & CF_RUNNING) |
|
|
2014 | croak ("cannot enable tracing on a running coroutine, caught"); |
|
|
2015 | |
|
|
2016 | if (flags & CC_TRACE) |
|
|
2017 | { |
|
|
2018 | if (!coro->cctx) |
|
|
2019 | coro->cctx = cctx_new_run (); |
|
|
2020 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
2021 | croak ("cannot enable tracing on coroutine with custom stack, caught"); |
|
|
2022 | |
|
|
2023 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
2024 | } |
|
|
2025 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
2026 | { |
|
|
2027 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
2028 | |
|
|
2029 | if (coro->flags & CF_RUNNING) |
|
|
2030 | PL_runops = RUNOPS_DEFAULT; |
|
|
2031 | else |
|
|
2032 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
2033 | } |
|
|
2034 | } |
|
|
2035 | |
|
|
2036 | static void |
|
|
2037 | coro_push_av (pTHX_ AV *av, I32 gimme_v) |
|
|
2038 | { |
|
|
2039 | if (AvFILLp (av) >= 0 && gimme_v != G_VOID) |
|
|
2040 | { |
|
|
2041 | dSP; |
|
|
2042 | |
|
|
2043 | if (gimme_v == G_SCALAR) |
|
|
2044 | XPUSHs (AvARRAY (av)[AvFILLp (av)]); |
|
|
2045 | else |
|
|
2046 | { |
|
|
2047 | int i; |
|
|
2048 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
2049 | |
|
|
2050 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
2051 | PUSHs (AvARRAY (av)[i]); |
|
|
2052 | } |
|
|
2053 | |
|
|
2054 | PUTBACK; |
|
|
2055 | } |
|
|
2056 | } |
|
|
2057 | |
|
|
2058 | static void |
|
|
2059 | coro_push_on_destroy (aTHX_ struct coro *coro, SV *cb) |
|
|
2060 | { |
|
|
2061 | if (!coro->on_destroy) |
|
|
2062 | coro->on_destroy = newAV (); |
|
|
2063 | |
|
|
2064 | av_push (coro->on_destroy, cb); |
|
|
2065 | } |
|
|
2066 | |
|
|
2067 | static void |
|
|
2068 | slf_destroy_join (pTHX_ struct CoroSLF *frame) |
|
|
2069 | { |
|
|
2070 | SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv); |
|
|
2071 | } |
|
|
2072 | |
|
|
2073 | static int |
|
|
2074 | slf_check_join (pTHX_ struct CoroSLF *frame) |
|
|
2075 | { |
|
|
2076 | struct coro *coro = (struct coro *)frame->data; |
|
|
2077 | |
|
|
2078 | if (!coro->status) |
|
|
2079 | return 1; |
|
|
2080 | |
|
|
2081 | frame->destroy = 0; |
|
|
2082 | |
|
|
2083 | coro_push_av (coro->status, GIMME_V); |
|
|
2084 | |
|
|
2085 | SvREFCNT_dec ((SV *)coro->hv); |
|
|
2086 | |
|
|
2087 | return 0; |
|
|
2088 | } |
|
|
2089 | |
|
|
2090 | static void |
|
|
2091 | slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2092 | { |
|
|
2093 | struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef); |
|
|
2094 | |
|
|
2095 | if (items > 1) |
|
|
2096 | croak ("join called with too many arguments"); |
|
|
2097 | |
|
|
2098 | if (coro->status) |
|
|
2099 | frame->prepare = prepare_nop; |
|
|
2100 | else |
|
|
2101 | { |
|
|
2102 | coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current))); |
|
|
2103 | frame->prepare = prepare_schedule; |
|
|
2104 | } |
|
|
2105 | |
|
|
2106 | frame->check = slf_check_join; |
|
|
2107 | frame->destroy = slf_destroy_join; |
|
|
2108 | frame->data = (void *)coro; |
|
|
2109 | SvREFCNT_inc (coro->hv); |
|
|
2110 | } |
|
|
2111 | |
|
|
2112 | static void |
|
|
2113 | coro_call_on_destroy (pTHX_ struct coro *coro) |
|
|
2114 | { |
|
|
2115 | AV *od = coro->on_destroy; |
|
|
2116 | |
|
|
2117 | if (!od) |
|
|
2118 | return; |
|
|
2119 | |
|
|
2120 | while (AvFILLp (od) >= 0) |
|
|
2121 | { |
|
|
2122 | SV *cb = sv_2mortal (av_pop (od)); |
|
|
2123 | |
|
|
2124 | /* coro hv's (and only hv's at the moment) are supported as well */ |
|
|
2125 | if (SvSTATEhv_p (aTHX_ cb)) |
|
|
2126 | api_ready (aTHX_ cb); |
|
|
2127 | else |
|
|
2128 | { |
|
|
2129 | dSP; /* don't disturb outer sp */ |
|
|
2130 | PUSHMARK (SP); |
|
|
2131 | |
|
|
2132 | if (coro->status) |
|
|
2133 | { |
|
|
2134 | PUTBACK; |
|
|
2135 | coro_push_av (aTHX_ coro->status, G_ARRAY); |
|
|
2136 | SPAGAIN; |
|
|
2137 | } |
|
|
2138 | |
|
|
2139 | PUTBACK; |
|
|
2140 | call_sv (cb, G_VOID | G_DISCARD); |
|
|
2141 | } |
|
|
2142 | } |
|
|
2143 | } |
|
|
2144 | |
|
|
2145 | static void |
|
|
2146 | coro_set_status (pTHX_ struct coro *coro, SV **arg, int items) |
|
|
2147 | { |
|
|
2148 | AV *av; |
|
|
2149 | |
|
|
2150 | if (coro->status) |
|
|
2151 | { |
|
|
2152 | av = coro->status; |
|
|
2153 | av_clear (av); |
|
|
2154 | } |
|
|
2155 | else |
|
|
2156 | av = coro->status = newAV (); |
|
|
2157 | |
|
|
2158 | /* items are actually not so common, so optimise for this case */ |
|
|
2159 | if (items) |
|
|
2160 | { |
|
|
2161 | int i; |
|
|
2162 | |
|
|
2163 | av_extend (av, items - 1); |
|
|
2164 | |
|
|
2165 | for (i = 0; i < items; ++i) |
|
|
2166 | av_push (av, SvREFCNT_inc_NN (arg [i])); |
|
|
2167 | } |
|
|
2168 | } |
|
|
2169 | |
|
|
2170 | static void |
|
|
2171 | slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv) |
|
|
2172 | { |
|
|
2173 | av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */ |
|
|
2174 | api_ready (aTHX_ sv_manager); |
|
|
2175 | |
|
|
2176 | frame->prepare = prepare_schedule; |
|
|
2177 | frame->check = slf_check_repeat; |
|
|
2178 | |
|
|
2179 | /* as a minor optimisation, we could unwind all stacks here */ |
|
|
2180 | /* but that puts extra pressure on pp_slf, and is not worth much */ |
|
|
2181 | /*coro_unwind_stacks (aTHX);*/ |
|
|
2182 | } |
|
|
2183 | |
|
|
2184 | static void |
|
|
2185 | slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2186 | { |
|
|
2187 | HV *coro_hv = (HV *)SvRV (coro_current); |
|
|
2188 | |
|
|
2189 | coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items); |
|
|
2190 | slf_init_terminate_cancel_common (aTHX_ frame, coro_hv); |
|
|
2191 | } |
|
|
2192 | |
|
|
2193 | static void |
|
|
2194 | slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2195 | { |
|
|
2196 | HV *coro_hv; |
|
|
2197 | struct coro *coro; |
|
|
2198 | |
|
|
2199 | if (items <= 0) |
|
|
2200 | croak ("Coro::cancel called without coro object,"); |
|
|
2201 | |
|
|
2202 | coro = SvSTATE (arg [0]); |
|
|
2203 | coro_hv = coro->hv; |
|
|
2204 | |
|
|
2205 | coro_set_status (aTHX_ coro, arg + 1, items - 1); |
|
|
2206 | |
|
|
2207 | if (expect_false (coro->flags & CF_NOCANCEL)) |
|
|
2208 | { |
|
|
2209 | /* coro currently busy cancelling something, so just notify it */ |
|
|
2210 | coro->slf_frame.data = (void *)coro; |
|
|
2211 | |
|
|
2212 | frame->prepare = prepare_nop; |
|
|
2213 | frame->check = slf_check_nop; |
|
|
2214 | } |
|
|
2215 | else if (coro_hv == (HV *)SvRV (coro_current)) |
|
|
2216 | { |
|
|
2217 | /* cancelling the current coro is allowed, and equals terminate */ |
|
|
2218 | slf_init_terminate_cancel_common (aTHX_ frame, coro_hv); |
|
|
2219 | } |
|
|
2220 | else |
|
|
2221 | { |
|
|
2222 | struct coro *self = SvSTATE_current; |
|
|
2223 | |
|
|
2224 | /* otherwise we cancel directly, purely for speed reasons |
|
|
2225 | * unfortunately, this requires some magic trickery, as |
|
|
2226 | * somebody else could cancel us, so we have to fight the cancellation. |
|
|
2227 | * this is ugly, and hopefully fully worth the extra speed. |
|
|
2228 | * besides, I can't get the slow-but-safe version working... |
|
|
2229 | */ |
|
|
2230 | slf_frame.data = 0; |
|
|
2231 | self->flags |= CF_NOCANCEL; |
|
|
2232 | coro_state_destroy (aTHX_ coro); |
|
|
2233 | self->flags &= ~CF_NOCANCEL; |
|
|
2234 | |
|
|
2235 | if (slf_frame.data) |
|
|
2236 | { |
|
|
2237 | /* while we were busy we have been cancelled, so terminate */ |
|
|
2238 | slf_init_terminate_cancel_common (aTHX_ frame, self->hv); |
|
|
2239 | } |
|
|
2240 | else |
|
|
2241 | { |
|
|
2242 | frame->prepare = prepare_nop; |
|
|
2243 | frame->check = slf_check_nop; |
|
|
2244 | } |
|
|
2245 | } |
|
|
2246 | } |
|
|
2247 | |
|
|
2248 | static int |
|
|
2249 | slf_check_safe_cancel (pTHX_ struct CoroSLF *frame) |
|
|
2250 | { |
|
|
2251 | frame->prepare = 0; |
|
|
2252 | coro_unwind_stacks (aTHX); |
|
|
2253 | |
|
|
2254 | slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current)); |
|
|
2255 | |
|
|
2256 | return 1; |
|
|
2257 | } |
|
|
2258 | |
|
|
2259 | static int |
|
|
2260 | safe_cancel (pTHX_ struct coro *coro, SV **arg, int items) |
|
|
2261 | { |
|
|
2262 | if (coro->cctx) |
|
|
2263 | croak ("coro inside C callback, unable to cancel at this time, caught"); |
|
|
2264 | |
|
|
2265 | if (coro->flags & CF_NEW) |
|
|
2266 | { |
|
|
2267 | coro_set_status (aTHX_ coro, arg, items); |
|
|
2268 | coro_state_destroy (aTHX_ coro); |
|
|
2269 | } |
|
|
2270 | else |
|
|
2271 | { |
|
|
2272 | if (!coro->slf_frame.prepare) |
|
|
2273 | croak ("coro outside an SLF function, unable to cancel at this time, caught"); |
|
|
2274 | |
|
|
2275 | slf_destroy (aTHX_ coro); |
|
|
2276 | |
|
|
2277 | coro_set_status (aTHX_ coro, arg, items); |
|
|
2278 | coro->slf_frame.prepare = prepare_nop; |
|
|
2279 | coro->slf_frame.check = slf_check_safe_cancel; |
|
|
2280 | |
|
|
2281 | api_ready (aTHX_ (SV *)coro->hv); |
|
|
2282 | } |
|
|
2283 | |
|
|
2284 | return 1; |
|
|
2285 | } |
|
|
2286 | |
|
|
2287 | /*****************************************************************************/ |
|
|
2288 | /* async pool handler */ |
|
|
2289 | |
|
|
2290 | static int |
|
|
2291 | slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
|
|
2292 | { |
|
|
2293 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2294 | struct coro *coro = (struct coro *)frame->data; |
|
|
2295 | |
|
|
2296 | if (!coro->invoke_cb) |
|
|
2297 | return 1; /* loop till we have invoke */ |
|
|
2298 | else |
|
|
2299 | { |
|
|
2300 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2301 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2302 | |
|
|
2303 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2304 | |
|
|
2305 | { |
|
|
2306 | dSP; |
|
|
2307 | XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
|
|
2308 | PUTBACK; |
|
|
2309 | } |
|
|
2310 | |
|
|
2311 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
2312 | GvAV (PL_defgv) = coro->invoke_av; |
|
|
2313 | coro->invoke_av = 0; |
|
|
2314 | |
|
|
2315 | return 0; |
|
|
2316 | } |
|
|
2317 | } |
|
|
2318 | |
|
|
2319 | static void |
|
|
2320 | slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2321 | { |
|
|
2322 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2323 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2324 | |
|
|
2325 | if (expect_true (coro->saved_deffh)) |
|
|
2326 | { |
|
|
2327 | /* subsequent iteration */ |
|
|
2328 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2329 | coro->saved_deffh = 0; |
|
|
2330 | |
|
|
2331 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
2332 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2333 | { |
|
|
2334 | slf_init_terminate_cancel_common (aTHX_ frame, hv); |
|
|
2335 | return; |
|
|
2336 | } |
|
|
2337 | else |
|
|
2338 | { |
|
|
2339 | av_clear (GvAV (PL_defgv)); |
|
|
2340 | hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
|
|
2341 | |
|
|
2342 | coro->prio = 0; |
|
|
2343 | |
|
|
2344 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
2345 | api_trace (aTHX_ coro_current, 0); |
|
|
2346 | |
|
|
2347 | frame->prepare = prepare_schedule; |
|
|
2348 | av_push (av_async_pool, SvREFCNT_inc (hv)); |
|
|
2349 | } |
|
|
2350 | } |
|
|
2351 | else |
|
|
2352 | { |
|
|
2353 | /* first iteration, simply fall through */ |
|
|
2354 | frame->prepare = prepare_nop; |
|
|
2355 | } |
|
|
2356 | |
|
|
2357 | frame->check = slf_check_pool_handler; |
|
|
2358 | frame->data = (void *)coro; |
|
|
2359 | } |
|
|
2360 | |
|
|
2361 | /*****************************************************************************/ |
|
|
2362 | /* rouse callback */ |
|
|
2363 | |
|
|
2364 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
2365 | |
|
|
2366 | static void |
|
|
2367 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
2368 | { |
|
|
2369 | dXSARGS; |
|
|
2370 | SV *data = (SV *)S_GENSUB_ARG; |
|
|
2371 | |
|
|
2372 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
2373 | { |
|
|
2374 | /* first call, set args */ |
|
|
2375 | SV *coro = SvRV (data); |
|
|
2376 | AV *av = newAV (); |
|
|
2377 | |
|
|
2378 | SvRV_set (data, (SV *)av); |
|
|
2379 | |
|
|
2380 | /* better take a full copy of the arguments */ |
|
|
2381 | while (items--) |
|
|
2382 | av_store (av, items, newSVsv (ST (items))); |
|
|
2383 | |
|
|
2384 | api_ready (aTHX_ coro); |
|
|
2385 | SvREFCNT_dec (coro); |
|
|
2386 | } |
|
|
2387 | |
|
|
2388 | XSRETURN_EMPTY; |
|
|
2389 | } |
|
|
2390 | |
|
|
2391 | static int |
|
|
2392 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
2393 | { |
|
|
2394 | SV *data = (SV *)frame->data; |
|
|
2395 | |
|
|
2396 | if (CORO_THROW) |
|
|
2397 | return 0; |
|
|
2398 | |
|
|
2399 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
2400 | return 1; |
|
|
2401 | |
|
|
2402 | /* now push all results on the stack */ |
|
|
2403 | { |
|
|
2404 | dSP; |
|
|
2405 | AV *av = (AV *)SvRV (data); |
|
|
2406 | int i; |
|
|
2407 | |
|
|
2408 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
2409 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
2410 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
2411 | |
|
|
2412 | /* we have stolen the elements, so set length to zero and free */ |
|
|
2413 | AvFILLp (av) = -1; |
|
|
2414 | av_undef (av); |
|
|
2415 | |
|
|
2416 | PUTBACK; |
|
|
2417 | } |
|
|
2418 | |
|
|
2419 | return 0; |
|
|
2420 | } |
|
|
2421 | |
|
|
2422 | static void |
|
|
2423 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2424 | { |
|
|
2425 | SV *cb; |
|
|
2426 | |
|
|
2427 | if (items) |
|
|
2428 | cb = arg [0]; |
|
|
2429 | else |
|
|
2430 | { |
|
|
2431 | struct coro *coro = SvSTATE_current; |
|
|
2432 | |
|
|
2433 | if (!coro->rouse_cb) |
|
|
2434 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
2435 | |
|
|
2436 | cb = sv_2mortal (coro->rouse_cb); |
|
|
2437 | coro->rouse_cb = 0; |
|
|
2438 | } |
|
|
2439 | |
|
|
2440 | if (!SvROK (cb) |
|
|
2441 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
2442 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
2443 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
2444 | |
|
|
2445 | { |
|
|
2446 | CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */ |
|
|
2447 | SV *data = (SV *)S_GENSUB_ARG; |
|
|
2448 | |
|
|
2449 | frame->data = (void *)data; |
|
|
2450 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
2451 | frame->check = slf_check_rouse_wait; |
|
|
2452 | } |
|
|
2453 | } |
|
|
2454 | |
|
|
2455 | static SV * |
|
|
2456 | coro_new_rouse_cb (pTHX) |
|
|
2457 | { |
|
|
2458 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2459 | struct coro *coro = SvSTATE_hv (hv); |
|
|
2460 | SV *data = newRV_inc ((SV *)hv); |
|
|
2461 | SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data); |
|
|
2462 | |
|
|
2463 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
|
|
2464 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
|
|
2465 | |
|
|
2466 | SvREFCNT_dec (coro->rouse_cb); |
|
|
2467 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
2468 | |
|
|
2469 | return cb; |
|
|
2470 | } |
|
|
2471 | |
|
|
2472 | /*****************************************************************************/ |
|
|
2473 | /* schedule-like-function opcode (SLF) */ |
|
|
2474 | |
|
|
2475 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
2476 | static const CV *slf_cv; |
|
|
2477 | static SV **slf_argv; |
|
|
2478 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
2479 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
2480 | |
|
|
2481 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
2482 | /* recreate the stack frame as perl will on following calls */ |
|
|
2483 | /* since entersub cleared the stack */ |
|
|
2484 | static OP * |
|
|
2485 | pp_restore (pTHX) |
|
|
2486 | { |
|
|
2487 | int i; |
|
|
2488 | SV **SP = PL_stack_base + slf_ax; |
|
|
2489 | |
|
|
2490 | PUSHMARK (SP); |
|
|
2491 | |
|
|
2492 | EXTEND (SP, slf_argc + 1); |
|
|
2493 | |
|
|
2494 | for (i = 0; i < slf_argc; ++i) |
|
|
2495 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
2496 | |
|
|
2497 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
2498 | |
|
|
2499 | RETURNOP (slf_restore.op_first); |
|
|
2500 | } |
|
|
2501 | |
|
|
2502 | static void |
|
|
2503 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
2504 | { |
|
|
2505 | SV **arg = (SV **)slf_frame.data; |
|
|
2506 | |
|
|
2507 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
2508 | } |
|
|
2509 | |
|
|
2510 | static void |
|
|
2511 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2512 | { |
|
|
2513 | if (items != 2) |
|
|
2514 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
2515 | |
|
|
2516 | frame->prepare = slf_prepare_transfer; |
|
|
2517 | frame->check = slf_check_nop; |
|
|
2518 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
2519 | } |
|
|
2520 | |
|
|
2521 | static void |
|
|
2522 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2523 | { |
|
|
2524 | frame->prepare = prepare_schedule; |
|
|
2525 | frame->check = slf_check_nop; |
|
|
2526 | } |
|
|
2527 | |
|
|
2528 | static void |
|
|
2529 | slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta) |
|
|
2530 | { |
|
|
2531 | struct coro *next = (struct coro *)slf_frame.data; |
|
|
2532 | |
|
|
2533 | SvREFCNT_inc_NN (next->hv); |
|
|
2534 | prepare_schedule_to (aTHX_ ta, next); |
|
|
2535 | } |
|
|
2536 | |
|
|
2537 | static void |
|
|
2538 | slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2539 | { |
|
|
2540 | if (!items) |
|
|
2541 | croak ("Coro::schedule_to expects a coroutine argument, caught"); |
|
|
2542 | |
|
|
2543 | frame->data = (void *)SvSTATE (arg [0]); |
|
|
2544 | frame->prepare = slf_prepare_schedule_to; |
|
|
2545 | frame->check = slf_check_nop; |
|
|
2546 | } |
|
|
2547 | |
|
|
2548 | static void |
|
|
2549 | slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2550 | { |
|
|
2551 | api_ready (aTHX_ SvRV (coro_current)); |
|
|
2552 | |
|
|
2553 | slf_init_schedule_to (aTHX_ frame, cv, arg, items); |
|
|
2554 | } |
|
|
2555 | |
|
|
2556 | static void |
|
|
2557 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2558 | { |
|
|
2559 | frame->prepare = prepare_cede; |
|
|
2560 | frame->check = slf_check_nop; |
|
|
2561 | } |
|
|
2562 | |
|
|
2563 | static void |
|
|
2564 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2565 | { |
|
|
2566 | frame->prepare = prepare_cede_notself; |
|
|
2567 | frame->check = slf_check_nop; |
|
|
2568 | } |
|
|
2569 | |
|
|
2570 | /* "undo"/cancel a running slf call - used when cancelling a coro, mainly */ |
|
|
2571 | static void |
|
|
2572 | slf_destroy (pTHX_ struct coro *coro) |
|
|
2573 | { |
|
|
2574 | /* this callback is reserved for slf functions needing to do cleanup */ |
|
|
2575 | if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty) |
|
|
2576 | coro->slf_frame.destroy (aTHX_ &coro->slf_frame); |
|
|
2577 | |
|
|
2578 | /* |
|
|
2579 | * The on_destroy above most likely is from an SLF call. |
|
|
2580 | * Since by definition the SLF call will not finish when we destroy |
|
|
2581 | * the coro, we will have to force-finish it here, otherwise |
|
|
2582 | * cleanup functions cannot call SLF functions. |
|
|
2583 | */ |
|
|
2584 | coro->slf_frame.prepare = 0; |
|
|
2585 | } |
|
|
2586 | |
|
|
2587 | /* |
|
|
2588 | * these not obviously related functions are all rolled into one |
|
|
2589 | * function to increase chances that they all will call transfer with the same |
|
|
2590 | * stack offset |
|
|
2591 | * SLF stands for "schedule-like-function". |
|
|
2592 | */ |
|
|
2593 | static OP * |
|
|
2594 | pp_slf (pTHX) |
|
|
2595 | { |
|
|
2596 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
2597 | |
|
|
2598 | /* set up the slf frame, unless it has already been set-up */ |
|
|
2599 | /* the latter happens when a new coro has been started */ |
|
|
2600 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
2601 | if (expect_true (!slf_frame.prepare)) |
|
|
2602 | { |
|
|
2603 | /* first iteration */ |
|
|
2604 | dSP; |
|
|
2605 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
2606 | int items = SP - arg; /* args without function object */ |
|
|
2607 | SV *gv = *sp; |
|
|
2608 | |
|
|
2609 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
2610 | /* for us, divert to the real entersub */ |
|
|
2611 | if (SvTYPE (gv) != SVt_PVGV |
|
|
2612 | || !GvCV (gv) |
|
|
2613 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
2614 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
2615 | |
|
|
2616 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
2617 | { |
|
|
2618 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
2619 | AV *av = GvAV (PL_defgv); |
|
|
2620 | arg = AvARRAY (av); |
|
|
2621 | items = AvFILLp (av) + 1; |
|
|
2622 | } |
|
|
2623 | |
|
|
2624 | /* now call the init function, which needs to set up slf_frame */ |
|
|
2625 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
2626 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
2627 | |
|
|
2628 | /* pop args */ |
|
|
2629 | SP = PL_stack_base + POPMARK; |
|
|
2630 | |
|
|
2631 | PUTBACK; |
|
|
2632 | } |
|
|
2633 | |
|
|
2634 | /* now that we have a slf_frame, interpret it! */ |
|
|
2635 | /* we use a callback system not to make the code needlessly */ |
|
|
2636 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
2637 | |
|
|
2638 | do |
|
|
2639 | { |
|
|
2640 | struct coro_transfer_args ta; |
|
|
2641 | |
|
|
2642 | slf_frame.prepare (aTHX_ &ta); |
|
|
2643 | TRANSFER (ta, 0); |
|
|
2644 | |
|
|
2645 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
2646 | } |
|
|
2647 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
2648 | |
|
|
2649 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
2650 | |
|
|
2651 | /* exception handling */ |
|
|
2652 | if (expect_false (CORO_THROW)) |
|
|
2653 | { |
|
|
2654 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
2655 | |
|
|
2656 | CORO_THROW = 0; |
|
|
2657 | sv_setsv (ERRSV, exception); |
|
|
2658 | croak (0); |
|
|
2659 | } |
|
|
2660 | |
|
|
2661 | /* return value handling - mostly like entersub */ |
|
|
2662 | /* make sure we put something on the stack in scalar context */ |
|
|
2663 | if (GIMME_V == G_SCALAR |
|
|
2664 | && expect_false (PL_stack_sp != PL_stack_base + checkmark + 1)) |
|
|
2665 | { |
|
|
2666 | dSP; |
|
|
2667 | SV **bot = PL_stack_base + checkmark; |
|
|
2668 | |
|
|
2669 | if (sp == bot) /* too few, push undef */ |
|
|
2670 | bot [1] = &PL_sv_undef; |
|
|
2671 | else /* too many, take last one */ |
|
|
2672 | bot [1] = *sp; |
|
|
2673 | |
|
|
2674 | SP = bot + 1; |
|
|
2675 | |
|
|
2676 | PUTBACK; |
|
|
2677 | } |
|
|
2678 | |
|
|
2679 | return NORMAL; |
|
|
2680 | } |
|
|
2681 | |
|
|
2682 | static void |
|
|
2683 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2684 | { |
|
|
2685 | int i; |
|
|
2686 | SV **arg = PL_stack_base + ax; |
|
|
2687 | int items = PL_stack_sp - arg + 1; |
|
|
2688 | |
|
|
2689 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2690 | |
|
|
2691 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2692 | && PL_op->op_ppaddr != pp_slf) |
|
|
2693 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2694 | |
|
|
2695 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2696 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2697 | slf_cv = cv; |
|
|
2698 | |
|
|
2699 | /* we patch the op, and then re-run the whole call */ |
|
|
2700 | /* we have to put the same argument on the stack for this to work */ |
|
|
2701 | /* and this will be done by pp_restore */ |
|
|
2702 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2703 | slf_restore.op_type = OP_CUSTOM; |
|
|
2704 | slf_restore.op_ppaddr = pp_restore; |
|
|
2705 | slf_restore.op_first = PL_op; |
|
|
2706 | |
|
|
2707 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2708 | |
|
|
2709 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2710 | { |
|
|
2711 | if (items > slf_arga) |
|
|
2712 | { |
|
|
2713 | slf_arga = items; |
|
|
2714 | Safefree (slf_argv); |
|
|
2715 | New (0, slf_argv, slf_arga, SV *); |
|
|
2716 | } |
|
|
2717 | |
|
|
2718 | slf_argc = items; |
|
|
2719 | |
|
|
2720 | for (i = 0; i < items; ++i) |
|
|
2721 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2722 | } |
|
|
2723 | else |
|
|
2724 | slf_argc = 0; |
|
|
2725 | |
|
|
2726 | PL_op->op_ppaddr = pp_slf; |
|
|
2727 | /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ |
|
|
2728 | |
|
|
2729 | PL_op = (OP *)&slf_restore; |
|
|
2730 | } |
|
|
2731 | |
|
|
2732 | /*****************************************************************************/ |
|
|
2733 | /* dynamic wind */ |
|
|
2734 | |
|
|
2735 | static void |
|
|
2736 | on_enterleave_call (pTHX_ SV *cb) |
|
|
2737 | { |
|
|
2738 | dSP; |
|
|
2739 | |
|
|
2740 | PUSHSTACK; |
|
|
2741 | |
|
|
2742 | PUSHMARK (SP); |
|
|
2743 | PUTBACK; |
|
|
2744 | call_sv (cb, G_VOID | G_DISCARD); |
|
|
2745 | SPAGAIN; |
|
|
2746 | |
|
|
2747 | POPSTACK; |
|
|
2748 | } |
|
|
2749 | |
|
|
2750 | static SV * |
|
|
2751 | coro_avp_pop_and_free (pTHX_ AV **avp) |
|
|
2752 | { |
|
|
2753 | AV *av = *avp; |
|
|
2754 | SV *res = av_pop (av); |
|
|
2755 | |
|
|
2756 | if (AvFILLp (av) < 0) |
|
|
2757 | { |
|
|
2758 | *avp = 0; |
|
|
2759 | SvREFCNT_dec (av); |
|
|
2760 | } |
|
|
2761 | |
|
|
2762 | return res; |
|
|
2763 | } |
|
|
2764 | |
|
|
2765 | static void |
|
|
2766 | coro_pop_on_enter (pTHX_ void *coro) |
|
|
2767 | { |
|
|
2768 | SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter); |
|
|
2769 | SvREFCNT_dec (cb); |
|
|
2770 | } |
|
|
2771 | |
|
|
2772 | static void |
|
|
2773 | coro_pop_on_leave (pTHX_ void *coro) |
|
|
2774 | { |
|
|
2775 | SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave); |
|
|
2776 | on_enterleave_call (aTHX_ sv_2mortal (cb)); |
|
|
2777 | } |
|
|
2778 | |
|
|
2779 | /*****************************************************************************/ |
|
|
2780 | /* PerlIO::cede */ |
|
|
2781 | |
|
|
2782 | typedef struct |
|
|
2783 | { |
|
|
2784 | PerlIOBuf base; |
|
|
2785 | NV next, every; |
|
|
2786 | } PerlIOCede; |
|
|
2787 | |
|
|
2788 | static IV |
|
|
2789 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
2790 | { |
|
|
2791 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2792 | |
|
|
2793 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
2794 | self->next = nvtime () + self->every; |
|
|
2795 | |
|
|
2796 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
2797 | } |
|
|
2798 | |
|
|
2799 | static SV * |
|
|
2800 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
2801 | { |
|
|
2802 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2803 | |
|
|
2804 | return newSVnv (self->every); |
|
|
2805 | } |
|
|
2806 | |
|
|
2807 | static IV |
|
|
2808 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
2809 | { |
|
|
2810 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2811 | double now = nvtime (); |
|
|
2812 | |
|
|
2813 | if (now >= self->next) |
|
|
2814 | { |
|
|
2815 | api_cede (aTHX); |
|
|
2816 | self->next = now + self->every; |
|
|
2817 | } |
|
|
2818 | |
|
|
2819 | return PerlIOBuf_flush (aTHX_ f); |
|
|
2820 | } |
|
|
2821 | |
|
|
2822 | static PerlIO_funcs PerlIO_cede = |
|
|
2823 | { |
|
|
2824 | sizeof(PerlIO_funcs), |
|
|
2825 | "cede", |
|
|
2826 | sizeof(PerlIOCede), |
|
|
2827 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
2828 | PerlIOCede_pushed, |
|
|
2829 | PerlIOBuf_popped, |
|
|
2830 | PerlIOBuf_open, |
|
|
2831 | PerlIOBase_binmode, |
|
|
2832 | PerlIOCede_getarg, |
|
|
2833 | PerlIOBase_fileno, |
|
|
2834 | PerlIOBuf_dup, |
|
|
2835 | PerlIOBuf_read, |
|
|
2836 | PerlIOBuf_unread, |
|
|
2837 | PerlIOBuf_write, |
|
|
2838 | PerlIOBuf_seek, |
|
|
2839 | PerlIOBuf_tell, |
|
|
2840 | PerlIOBuf_close, |
|
|
2841 | PerlIOCede_flush, |
|
|
2842 | PerlIOBuf_fill, |
|
|
2843 | PerlIOBase_eof, |
|
|
2844 | PerlIOBase_error, |
|
|
2845 | PerlIOBase_clearerr, |
|
|
2846 | PerlIOBase_setlinebuf, |
|
|
2847 | PerlIOBuf_get_base, |
|
|
2848 | PerlIOBuf_bufsiz, |
|
|
2849 | PerlIOBuf_get_ptr, |
|
|
2850 | PerlIOBuf_get_cnt, |
|
|
2851 | PerlIOBuf_set_ptrcnt, |
|
|
2852 | }; |
|
|
2853 | |
|
|
2854 | /*****************************************************************************/ |
|
|
2855 | /* Coro::Semaphore & Coro::Signal */ |
|
|
2856 | |
|
|
2857 | static SV * |
|
|
2858 | coro_waitarray_new (pTHX_ int count) |
|
|
2859 | { |
|
|
2860 | /* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2861 | AV *av = newAV (); |
|
|
2862 | SV **ary; |
|
|
2863 | |
|
|
2864 | /* unfortunately, building manually saves memory */ |
|
|
2865 | Newx (ary, 2, SV *); |
|
|
2866 | AvALLOC (av) = ary; |
|
|
2867 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
2868 | AvARRAY (av) = ary; |
|
|
2869 | #else |
|
|
2870 | /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */ |
|
|
2871 | /* -DDEBUGGING flags this as a bug, despite it perfectly working */ |
|
|
2872 | SvPVX ((SV *)av) = (char *)ary; |
|
|
2873 | #endif |
|
|
2874 | AvMAX (av) = 1; |
|
|
2875 | AvFILLp (av) = 0; |
|
|
2876 | ary [0] = newSViv (count); |
|
|
2877 | |
|
|
2878 | return newRV_noinc ((SV *)av); |
|
|
2879 | } |
|
|
2880 | |
|
|
2881 | /* semaphore */ |
|
|
2882 | |
|
|
2883 | static void |
|
|
2884 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2885 | { |
|
|
2886 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2887 | IV count = SvIVX (count_sv); |
|
|
2888 | |
|
|
2889 | count += adjust; |
|
|
2890 | SvIVX (count_sv) = count; |
|
|
2891 | |
|
|
2892 | /* now wake up as many waiters as are expected to lock */ |
|
|
2893 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2894 | { |
|
|
2895 | SV *cb; |
|
|
2896 | |
|
|
2897 | /* swap first two elements so we can shift a waiter */ |
|
|
2898 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2899 | AvARRAY (av)[1] = count_sv; |
|
|
2900 | cb = av_shift (av); |
|
|
2901 | |
|
|
2902 | if (SvOBJECT (cb)) |
|
|
2903 | { |
|
|
2904 | api_ready (aTHX_ cb); |
|
|
2905 | --count; |
|
|
2906 | } |
|
|
2907 | else if (SvTYPE (cb) == SVt_PVCV) |
|
|
2908 | { |
|
|
2909 | dSP; |
|
|
2910 | PUSHMARK (SP); |
|
|
2911 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2912 | PUTBACK; |
|
|
2913 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2914 | } |
|
|
2915 | |
|
|
2916 | SvREFCNT_dec (cb); |
|
|
2917 | } |
|
|
2918 | } |
|
|
2919 | |
|
|
2920 | static void |
|
|
2921 | coro_semaphore_destroy (pTHX_ struct CoroSLF *frame) |
|
|
2922 | { |
|
|
2923 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2924 | coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0); |
|
|
2925 | } |
|
|
2926 | |
|
|
2927 | static int |
|
|
2928 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
|
|
2929 | { |
|
|
2930 | AV *av = (AV *)frame->data; |
|
|
2931 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2932 | SV *coro_hv = SvRV (coro_current); |
|
|
2933 | |
|
|
2934 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
|
|
2935 | if (CORO_THROW) |
|
|
2936 | return 0; |
|
|
2937 | else if (SvIVX (count_sv) > 0) |
|
|
2938 | { |
|
|
2939 | frame->destroy = 0; |
|
|
2940 | |
|
|
2941 | if (acquire) |
|
|
2942 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2943 | else |
|
|
2944 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2945 | |
|
|
2946 | return 0; |
|
|
2947 | } |
|
|
2948 | else |
|
|
2949 | { |
|
|
2950 | int i; |
|
|
2951 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2952 | /* waiters list and only add us if we aren't in there already */ |
|
|
2953 | /* this avoids some degenerate memory usage cases */ |
|
|
2954 | for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug |
|
|
2955 | if (AvARRAY (av)[i] == coro_hv) |
|
|
2956 | return 1; |
|
|
2957 | |
|
|
2958 | av_push (av, SvREFCNT_inc (coro_hv)); |
|
|
2959 | return 1; |
|
|
2960 | } |
|
|
2961 | } |
|
|
2962 | |
|
|
2963 | static int |
|
|
2964 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2965 | { |
|
|
2966 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2967 | } |
|
|
2968 | |
|
|
2969 | static int |
|
|
2970 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2971 | { |
|
|
2972 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2973 | } |
|
|
2974 | |
|
|
2975 | static void |
|
|
2976 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2977 | { |
|
|
2978 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2979 | |
|
|
2980 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2981 | { |
|
|
2982 | frame->data = (void *)av; |
|
|
2983 | frame->prepare = prepare_nop; |
|
|
2984 | } |
|
|
2985 | else |
|
|
2986 | { |
|
|
2987 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2988 | |
|
|
2989 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2990 | frame->prepare = prepare_schedule; |
|
|
2991 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2992 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2993 | frame->destroy = coro_semaphore_destroy; |
|
|
2994 | } |
|
|
2995 | } |
|
|
2996 | |
|
|
2997 | static void |
|
|
2998 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2999 | { |
|
|
3000 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
3001 | frame->check = slf_check_semaphore_down; |
|
|
3002 | } |
|
|
3003 | |
|
|
3004 | static void |
|
|
3005 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
3006 | { |
|
|
3007 | if (items >= 2) |
|
|
3008 | { |
|
|
3009 | /* callback form */ |
|
|
3010 | AV *av = (AV *)SvRV (arg [0]); |
|
|
3011 | SV *cb_cv = s_get_cv_croak (arg [1]); |
|
|
3012 | |
|
|
3013 | av_push (av, SvREFCNT_inc_NN (cb_cv)); |
|
|
3014 | |
|
|
3015 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
3016 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
3017 | |
|
|
3018 | frame->prepare = prepare_nop; |
|
|
3019 | frame->check = slf_check_nop; |
|
|
3020 | } |
|
|
3021 | else |
|
|
3022 | { |
|
|
3023 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
3024 | frame->check = slf_check_semaphore_wait; |
|
|
3025 | } |
|
|
3026 | } |
|
|
3027 | |
|
|
3028 | /* signal */ |
|
|
3029 | |
|
|
3030 | static void |
|
|
3031 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
3032 | { |
|
|
3033 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
3034 | |
|
|
3035 | /* now signal count waiters */ |
|
|
3036 | while (count > 0 && AvFILLp (av) > 0) |
|
|
3037 | { |
|
|
3038 | SV *cb; |
|
|
3039 | |
|
|
3040 | /* swap first two elements so we can shift a waiter */ |
|
|
3041 | cb = AvARRAY (av)[0]; |
|
|
3042 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
3043 | AvARRAY (av)[1] = cb; |
|
|
3044 | |
|
|
3045 | cb = av_shift (av); |
|
|
3046 | |
|
|
3047 | if (SvTYPE (cb) == SVt_PVCV) |
|
|
3048 | { |
|
|
3049 | dSP; |
|
|
3050 | PUSHMARK (SP); |
|
|
3051 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
3052 | PUTBACK; |
|
|
3053 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
3054 | } |
|
|
3055 | else |
|
|
3056 | { |
|
|
3057 | api_ready (aTHX_ cb); |
|
|
3058 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
3059 | } |
|
|
3060 | |
|
|
3061 | SvREFCNT_dec (cb); |
|
|
3062 | |
|
|
3063 | --count; |
|
|
3064 | } |
|
|
3065 | } |
|
|
3066 | |
|
|
3067 | static int |
|
|
3068 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
3069 | { |
|
|
3070 | /* if we are about to throw, also stop waiting */ |
|
|
3071 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
3072 | } |
|
|
3073 | |
|
|
3074 | static void |
|
|
3075 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
3076 | { |
|
|
3077 | AV *av = (AV *)SvRV (arg [0]); |
|
|
3078 | |
|
|
3079 | if (items >= 2) |
|
|
3080 | { |
|
|
3081 | SV *cb_cv = s_get_cv_croak (arg [1]); |
|
|
3082 | av_push (av, SvREFCNT_inc_NN (cb_cv)); |
|
|
3083 | |
|
|
3084 | if (SvIVX (AvARRAY (av)[0])) |
|
|
3085 | coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */ |
|
|
3086 | |
|
|
3087 | frame->prepare = prepare_nop; |
|
|
3088 | frame->check = slf_check_nop; |
|
|
3089 | } |
|
|
3090 | else if (SvIVX (AvARRAY (av)[0])) |
|
|
3091 | { |
|
|
3092 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
3093 | frame->prepare = prepare_nop; |
|
|
3094 | frame->check = slf_check_nop; |
|
|
3095 | } |
|
|
3096 | else |
|
|
3097 | { |
|
|
3098 | SV *waiter = newSVsv (coro_current); /* owned by signal av */ |
|
|
3099 | |
|
|
3100 | av_push (av, waiter); |
|
|
3101 | |
|
|
3102 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
3103 | frame->prepare = prepare_schedule; |
|
|
3104 | frame->check = slf_check_signal_wait; |
|
|
3105 | } |
|
|
3106 | } |
|
|
3107 | |
|
|
3108 | /*****************************************************************************/ |
|
|
3109 | /* Coro::AIO */ |
|
|
3110 | |
|
|
3111 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
3112 | |
|
|
3113 | /* helper storage struct */ |
|
|
3114 | struct io_state |
|
|
3115 | { |
|
|
3116 | int errorno; |
|
|
3117 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
3118 | int laststatval; |
|
|
3119 | Stat_t statcache; |
|
|
3120 | }; |
|
|
3121 | |
|
|
3122 | static void |
|
|
3123 | coro_aio_callback (pTHX_ CV *cv) |
|
|
3124 | { |
|
|
3125 | dXSARGS; |
|
|
3126 | AV *state = (AV *)S_GENSUB_ARG; |
|
|
3127 | SV *coro = av_pop (state); |
|
|
3128 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
3129 | |
|
|
3130 | av_extend (state, items - 1); |
|
|
3131 | |
|
|
3132 | sv_upgrade (data_sv, SVt_PV); |
|
|
3133 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
3134 | SvPOK_only (data_sv); |
|
|
3135 | |
|
|
3136 | { |
|
|
3137 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
3138 | |
|
|
3139 | data->errorno = errno; |
|
|
3140 | data->laststype = PL_laststype; |
|
|
3141 | data->laststatval = PL_laststatval; |
|
|
3142 | data->statcache = PL_statcache; |
|
|
3143 | } |
|
|
3144 | |
|
|
3145 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
3146 | { |
|
|
3147 | int i; |
|
|
3148 | |
|
|
3149 | for (i = 0; i < items; ++i) |
|
|
3150 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
3151 | } |
|
|
3152 | |
|
|
3153 | av_push (state, data_sv); |
|
|
3154 | |
|
|
3155 | api_ready (aTHX_ coro); |
|
|
3156 | SvREFCNT_dec (coro); |
|
|
3157 | SvREFCNT_dec ((AV *)state); |
|
|
3158 | } |
|
|
3159 | |
|
|
3160 | static int |
|
|
3161 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
3162 | { |
|
|
3163 | AV *state = (AV *)frame->data; |
|
|
3164 | |
|
|
3165 | /* if we are about to throw, return early */ |
|
|
3166 | /* this does not cancel the aio request, but at least */ |
|
|
3167 | /* it quickly returns */ |
|
|
3168 | if (CORO_THROW) |
|
|
3169 | return 0; |
|
|
3170 | |
|
|
3171 | /* one element that is an RV? repeat! */ |
|
|
3172 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
3173 | return 1; |
|
|
3174 | |
|
|
3175 | /* restore status */ |
|
|
3176 | { |
|
|
3177 | SV *data_sv = av_pop (state); |
|
|
3178 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
3179 | |
|
|
3180 | errno = data->errorno; |
|
|
3181 | PL_laststype = data->laststype; |
|
|
3182 | PL_laststatval = data->laststatval; |
|
|
3183 | PL_statcache = data->statcache; |
|
|
3184 | |
|
|
3185 | SvREFCNT_dec (data_sv); |
|
|
3186 | } |
|
|
3187 | |
|
|
3188 | /* push result values */ |
|
|
3189 | { |
|
|
3190 | dSP; |
|
|
3191 | int i; |
|
|
3192 | |
|
|
3193 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
3194 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
3195 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
3196 | |
|
|
3197 | PUTBACK; |
|
|
3198 | } |
|
|
3199 | |
|
|
3200 | return 0; |
|
|
3201 | } |
|
|
3202 | |
|
|
3203 | static void |
|
|
3204 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
3205 | { |
|
|
3206 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
3207 | SV *coro_hv = SvRV (coro_current); |
|
|
3208 | struct coro *coro = SvSTATE_hv (coro_hv); |
|
|
3209 | |
|
|
3210 | /* put our coroutine id on the state arg */ |
|
|
3211 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
|
|
3212 | |
|
|
3213 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
3214 | if (coro->prio) |
|
|
3215 | { |
|
|
3216 | dSP; |
|
|
3217 | |
|
|
3218 | static SV *prio_cv; |
|
|
3219 | static SV *prio_sv; |
|
|
3220 | |
|
|
3221 | if (expect_false (!prio_cv)) |
|
|
3222 | { |
|
|
3223 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
3224 | prio_sv = newSViv (0); |
|
|
3225 | } |
|
|
3226 | |
|
|
3227 | PUSHMARK (SP); |
|
|
3228 | sv_setiv (prio_sv, coro->prio); |
|
|
3229 | XPUSHs (prio_sv); |
|
|
3230 | |
|
|
3231 | PUTBACK; |
|
|
3232 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
3233 | } |
|
|
3234 | |
|
|
3235 | /* now call the original request */ |
|
|
3236 | { |
|
|
3237 | dSP; |
|
|
3238 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
3239 | int i; |
|
|
3240 | |
|
|
3241 | PUSHMARK (SP); |
|
|
3242 | |
|
|
3243 | /* first push all args to the stack */ |
|
|
3244 | EXTEND (SP, items + 1); |
|
|
3245 | |
|
|
3246 | for (i = 0; i < items; ++i) |
|
|
3247 | PUSHs (arg [i]); |
|
|
3248 | |
|
|
3249 | /* now push the callback closure */ |
|
|
3250 | PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
3251 | |
|
|
3252 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
3253 | PUTBACK; |
|
|
3254 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
3255 | } |
|
|
3256 | |
|
|
3257 | /* now that the request is going, we loop till we have a result */ |
|
|
3258 | frame->data = (void *)state; |
|
|
3259 | frame->prepare = prepare_schedule; |
|
|
3260 | frame->check = slf_check_aio_req; |
|
|
3261 | } |
|
|
3262 | |
|
|
3263 | static void |
|
|
3264 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
3265 | { |
|
|
3266 | dXSARGS; |
|
|
3267 | |
|
|
3268 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
3269 | |
|
|
3270 | XSRETURN_EMPTY; |
|
|
3271 | } |
|
|
3272 | |
|
|
3273 | /*****************************************************************************/ |
|
|
3274 | |
|
|
3275 | #if CORO_CLONE |
|
|
3276 | # include "clone.c" |
|
|
3277 | #endif |
|
|
3278 | |
|
|
3279 | /*****************************************************************************/ |
|
|
3280 | |
|
|
3281 | static SV * |
|
|
3282 | coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro) |
|
|
3283 | { |
|
|
3284 | SV *coro_sv; |
|
|
3285 | struct coro *coro; |
|
|
3286 | MAGIC *mg; |
|
|
3287 | HV *hv; |
|
|
3288 | SV *cb; |
|
|
3289 | int i; |
|
|
3290 | |
|
|
3291 | if (argc > 0) |
|
|
3292 | { |
|
|
3293 | cb = s_get_cv_croak (argv [0]); |
|
|
3294 | |
|
|
3295 | if (!is_coro) |
|
|
3296 | { |
|
|
3297 | if (CvISXSUB (cb)) |
|
|
3298 | croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
|
|
3299 | |
|
|
3300 | if (!CvROOT (cb)) |
|
|
3301 | croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
|
|
3302 | } |
|
|
3303 | } |
|
|
3304 | |
|
|
3305 | Newz (0, coro, 1, struct coro); |
|
|
3306 | coro->args = newAV (); |
|
|
3307 | coro->flags = CF_NEW; |
|
|
3308 | |
|
|
3309 | if (coro_first) coro_first->prev = coro; |
|
|
3310 | coro->next = coro_first; |
|
|
3311 | coro_first = coro; |
|
|
3312 | |
|
|
3313 | coro->hv = hv = newHV (); |
|
|
3314 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
3315 | mg->mg_flags |= MGf_DUP; |
|
|
3316 | coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash); |
|
|
3317 | |
|
|
3318 | if (argc > 0) |
|
|
3319 | { |
|
|
3320 | av_extend (coro->args, argc + is_coro - 1); |
|
|
3321 | |
|
|
3322 | if (is_coro) |
|
|
3323 | { |
|
|
3324 | av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
|
|
3325 | cb = (SV *)cv_coro_run; |
|
|
3326 | } |
|
|
3327 | |
|
|
3328 | coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
|
|
3329 | |
|
|
3330 | for (i = 1; i < argc; i++) |
|
|
3331 | av_push (coro->args, newSVsv (argv [i])); |
|
|
3332 | } |
|
|
3333 | |
|
|
3334 | return coro_sv; |
|
|
3335 | } |
|
|
3336 | |
|
|
3337 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
|
|
3338 | |
|
|
3339 | PROTOTYPES: DISABLE |
|
|
3340 | |
|
|
3341 | BOOT: |
|
|
3342 | { |
|
|
3343 | #ifdef USE_ITHREADS |
|
|
3344 | # if CORO_PTHREAD |
|
|
3345 | coro_thx = PERL_GET_CONTEXT; |
|
|
3346 | # endif |
|
|
3347 | #endif |
|
|
3348 | BOOT_PAGESIZE; |
|
|
3349 | |
|
|
3350 | cctx_current = cctx_new_empty (); |
|
|
3351 | |
|
|
3352 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
3353 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
3354 | |
|
|
3355 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
3356 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
3357 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
3358 | |
|
|
3359 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
3360 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
3361 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
3362 | |
|
|
3363 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
|
|
3364 | |
|
|
3365 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
|
|
3366 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
|
|
3367 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
|
|
3368 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
|
|
3369 | |
|
|
3370 | main_mainstack = PL_mainstack; |
|
|
3371 | main_top_env = PL_top_env; |
|
|
3372 | |
|
|
3373 | while (main_top_env->je_prev) |
|
|
3374 | main_top_env = main_top_env->je_prev; |
|
|
3375 | |
|
|
3376 | { |
|
|
3377 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
3378 | |
|
|
3379 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
3380 | hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0); |
|
|
3381 | |
|
|
3382 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
3383 | hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0); |
|
|
3384 | } |
|
|
3385 | |
|
|
3386 | coroapi.ver = CORO_API_VERSION; |
|
|
3387 | coroapi.rev = CORO_API_REVISION; |
|
|
3388 | |
|
|
3389 | coroapi.transfer = api_transfer; |
|
|
3390 | |
|
|
3391 | coroapi.sv_state = SvSTATE_; |
|
|
3392 | coroapi.execute_slf = api_execute_slf; |
|
|
3393 | coroapi.prepare_nop = prepare_nop; |
|
|
3394 | coroapi.prepare_schedule = prepare_schedule; |
|
|
3395 | coroapi.prepare_cede = prepare_cede; |
|
|
3396 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
3397 | |
|
|
3398 | time_init (aTHX); |
|
|
3399 | |
|
|
3400 | assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL)); |
|
|
3401 | } |
|
|
3402 | |
|
|
3403 | SV * |
|
|
3404 | new (SV *klass, ...) |
|
|
3405 | ALIAS: |
|
|
3406 | Coro::new = 1 |
|
|
3407 | CODE: |
|
|
3408 | RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix); |
|
|
3409 | OUTPUT: |
|
|
3410 | RETVAL |
|
|
3411 | |
|
|
3412 | void |
|
|
3413 | transfer (...) |
|
|
3414 | PROTOTYPE: $$ |
|
|
3415 | CODE: |
|
|
3416 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
|
|
3417 | |
|
|
3418 | void |
|
|
3419 | _exit (int code) |
|
|
3420 | PROTOTYPE: $ |
|
|
3421 | CODE: |
|
|
3422 | _exit (code); |
|
|
3423 | |
|
|
3424 | SV * |
|
|
3425 | clone (Coro::State coro) |
|
|
3426 | CODE: |
|
|
3427 | { |
|
|
3428 | #if CORO_CLONE |
|
|
3429 | struct coro *ncoro = coro_clone (aTHX_ coro); |
|
|
3430 | MAGIC *mg; |
|
|
3431 | /* TODO: too much duplication */ |
|
|
3432 | ncoro->hv = newHV (); |
|
|
3433 | mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); |
|
|
3434 | mg->mg_flags |= MGf_DUP; |
|
|
3435 | RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); |
|
|
3436 | #else |
|
|
3437 | croak ("Coro::State->clone has not been configured into this installation of Coro, realised"); |
|
|
3438 | #endif |
|
|
3439 | } |
|
|
3440 | OUTPUT: |
|
|
3441 | RETVAL |
|
|
3442 | |
|
|
3443 | int |
|
|
3444 | cctx_stacksize (int new_stacksize = 0) |
|
|
3445 | PROTOTYPE: ;$ |
|
|
3446 | CODE: |
|
|
3447 | RETVAL = cctx_stacksize; |
|
|
3448 | if (new_stacksize) |
|
|
3449 | { |
|
|
3450 | cctx_stacksize = new_stacksize; |
|
|
3451 | ++cctx_gen; |
|
|
3452 | } |
|
|
3453 | OUTPUT: |
|
|
3454 | RETVAL |
|
|
3455 | |
|
|
3456 | int |
|
|
3457 | cctx_max_idle (int max_idle = 0) |
|
|
3458 | PROTOTYPE: ;$ |
|
|
3459 | CODE: |
|
|
3460 | RETVAL = cctx_max_idle; |
|
|
3461 | if (max_idle > 1) |
|
|
3462 | cctx_max_idle = max_idle; |
|
|
3463 | OUTPUT: |
|
|
3464 | RETVAL |
|
|
3465 | |
|
|
3466 | int |
|
|
3467 | cctx_count () |
|
|
3468 | PROTOTYPE: |
|
|
3469 | CODE: |
|
|
3470 | RETVAL = cctx_count; |
|
|
3471 | OUTPUT: |
|
|
3472 | RETVAL |
|
|
3473 | |
|
|
3474 | int |
|
|
3475 | cctx_idle () |
|
|
3476 | PROTOTYPE: |
|
|
3477 | CODE: |
|
|
3478 | RETVAL = cctx_idle; |
|
|
3479 | OUTPUT: |
|
|
3480 | RETVAL |
|
|
3481 | |
|
|
3482 | void |
|
|
3483 | list () |
|
|
3484 | PROTOTYPE: |
|
|
3485 | PPCODE: |
|
|
3486 | { |
|
|
3487 | struct coro *coro; |
|
|
3488 | for (coro = coro_first; coro; coro = coro->next) |
|
|
3489 | if (coro->hv) |
|
|
3490 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
3491 | } |
|
|
3492 | |
|
|
3493 | void |
|
|
3494 | call (Coro::State coro, SV *coderef) |
|
|
3495 | ALIAS: |
|
|
3496 | eval = 1 |
|
|
3497 | CODE: |
|
|
3498 | { |
|
|
3499 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
3500 | { |
|
|
3501 | struct coro *current = SvSTATE_current; |
|
|
3502 | struct CoroSLF slf_save; |
|
|
3503 | |
|
|
3504 | if (current != coro) |
235 | { |
3505 | { |
236 | /* I never used formats, so how should I know how these are implemented? */ |
3506 | PUTBACK; |
237 | /* my bold guess is as a simple, plain sub... */ |
3507 | save_perl (aTHX_ current); |
238 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
3508 | load_perl (aTHX_ coro); |
|
|
3509 | /* the coro is most likely in an active SLF call. |
|
|
3510 | * while not strictly required (the code we execute is |
|
|
3511 | * not allowed to call any SLF functions), it's cleaner |
|
|
3512 | * to reinitialise the slf_frame and restore it later. |
|
|
3513 | * This might one day allow us to actually do SLF calls |
|
|
3514 | * from code executed here. |
|
|
3515 | */ |
|
|
3516 | slf_save = slf_frame; |
|
|
3517 | slf_frame.prepare = 0; |
|
|
3518 | SPAGAIN; |
|
|
3519 | } |
|
|
3520 | |
|
|
3521 | PUSHSTACK; |
|
|
3522 | |
|
|
3523 | PUSHMARK (SP); |
|
|
3524 | PUTBACK; |
|
|
3525 | |
|
|
3526 | if (ix) |
|
|
3527 | eval_sv (coderef, 0); |
|
|
3528 | else |
|
|
3529 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3530 | |
|
|
3531 | POPSTACK; |
|
|
3532 | SPAGAIN; |
|
|
3533 | |
|
|
3534 | if (current != coro) |
|
|
3535 | { |
|
|
3536 | PUTBACK; |
|
|
3537 | slf_frame = slf_save; |
|
|
3538 | save_perl (aTHX_ coro); |
|
|
3539 | load_perl (aTHX_ current); |
|
|
3540 | SPAGAIN; |
239 | } |
3541 | } |
240 | } |
3542 | } |
241 | |
|
|
242 | if (top_si->si_type == PERLSI_MAIN) |
|
|
243 | break; |
|
|
244 | |
|
|
245 | top_si = top_si->si_prev; |
|
|
246 | ccstk = top_si->si_cxstack; |
|
|
247 | cxix = top_si->si_cxix; |
|
|
248 | } |
|
|
249 | |
|
|
250 | PUTBACK; |
|
|
251 | } |
|
|
252 | |
|
|
253 | c->dowarn = PL_dowarn; |
|
|
254 | c->defav = GvAV (PL_defgv); |
|
|
255 | c->curstackinfo = PL_curstackinfo; |
|
|
256 | c->curstack = PL_curstack; |
|
|
257 | c->mainstack = PL_mainstack; |
|
|
258 | c->stack_sp = PL_stack_sp; |
|
|
259 | c->op = PL_op; |
|
|
260 | c->curpad = PL_curpad; |
|
|
261 | c->stack_base = PL_stack_base; |
|
|
262 | c->stack_max = PL_stack_max; |
|
|
263 | c->tmps_stack = PL_tmps_stack; |
|
|
264 | c->tmps_floor = PL_tmps_floor; |
|
|
265 | c->tmps_ix = PL_tmps_ix; |
|
|
266 | c->tmps_max = PL_tmps_max; |
|
|
267 | c->markstack = PL_markstack; |
|
|
268 | c->markstack_ptr = PL_markstack_ptr; |
|
|
269 | c->markstack_max = PL_markstack_max; |
|
|
270 | c->scopestack = PL_scopestack; |
|
|
271 | c->scopestack_ix = PL_scopestack_ix; |
|
|
272 | c->scopestack_max = PL_scopestack_max; |
|
|
273 | c->savestack = PL_savestack; |
|
|
274 | c->savestack_ix = PL_savestack_ix; |
|
|
275 | c->savestack_max = PL_savestack_max; |
|
|
276 | c->retstack = PL_retstack; |
|
|
277 | c->retstack_ix = PL_retstack_ix; |
|
|
278 | c->retstack_max = PL_retstack_max; |
|
|
279 | c->curcop = PL_curcop; |
|
|
280 | } |
3543 | } |
281 | |
3544 | |
282 | #define LOAD(state) do { load_state(aTHX_ state); SPAGAIN; } while (0) |
3545 | SV * |
283 | #define SAVE(state) do { PUTBACK; save_state(aTHX_ state); } while (0) |
3546 | is_ready (Coro::State coro) |
284 | |
|
|
285 | static void |
|
|
286 | load_state(pTHX_ Coro__State c) |
|
|
287 | { |
|
|
288 | PL_dowarn = c->dowarn; |
|
|
289 | GvAV (PL_defgv) = c->defav; |
|
|
290 | PL_curstackinfo = c->curstackinfo; |
|
|
291 | PL_curstack = c->curstack; |
|
|
292 | PL_mainstack = c->mainstack; |
|
|
293 | PL_stack_sp = c->stack_sp; |
|
|
294 | PL_op = c->op; |
|
|
295 | PL_curpad = c->curpad; |
|
|
296 | PL_stack_base = c->stack_base; |
|
|
297 | PL_stack_max = c->stack_max; |
|
|
298 | PL_tmps_stack = c->tmps_stack; |
|
|
299 | PL_tmps_floor = c->tmps_floor; |
|
|
300 | PL_tmps_ix = c->tmps_ix; |
|
|
301 | PL_tmps_max = c->tmps_max; |
|
|
302 | PL_markstack = c->markstack; |
|
|
303 | PL_markstack_ptr = c->markstack_ptr; |
|
|
304 | PL_markstack_max = c->markstack_max; |
|
|
305 | PL_scopestack = c->scopestack; |
|
|
306 | PL_scopestack_ix = c->scopestack_ix; |
|
|
307 | PL_scopestack_max = c->scopestack_max; |
|
|
308 | PL_savestack = c->savestack; |
|
|
309 | PL_savestack_ix = c->savestack_ix; |
|
|
310 | PL_savestack_max = c->savestack_max; |
|
|
311 | PL_retstack = c->retstack; |
|
|
312 | PL_retstack_ix = c->retstack_ix; |
|
|
313 | PL_retstack_max = c->retstack_max; |
|
|
314 | PL_curcop = c->curcop; |
|
|
315 | |
|
|
316 | { |
|
|
317 | dSP; |
|
|
318 | CV *cv; |
|
|
319 | |
|
|
320 | /* now do the ugly restore mess */ |
|
|
321 | while ((cv = (CV *)POPs)) |
|
|
322 | { |
|
|
323 | AV *padlist = (AV *)POPs; |
|
|
324 | |
|
|
325 | put_padlist (cv); |
|
|
326 | CvPADLIST(cv) = padlist; |
|
|
327 | CvDEPTH(cv) = (I32)POPs; |
|
|
328 | |
|
|
329 | #ifdef USE_THREADS |
|
|
330 | CvOWNER(cv) = (struct perl_thread *)POPs; |
|
|
331 | error does not work either |
|
|
332 | #endif |
|
|
333 | } |
|
|
334 | |
|
|
335 | PUTBACK; |
|
|
336 | } |
|
|
337 | } |
|
|
338 | |
|
|
339 | /* this is an EXACT copy of S_nuke_stacks in perl.c, which is unfortunately static */ |
|
|
340 | STATIC void |
|
|
341 | destroy_stacks(pTHX) |
|
|
342 | { |
|
|
343 | /* die does this while calling POPSTACK, but I just don't see why. */ |
|
|
344 | /* OTOH, die does not have a memleak, but we do... */ |
|
|
345 | dounwind(-1); |
|
|
346 | |
|
|
347 | /* is this ugly, I ask? */ |
|
|
348 | while (PL_scopestack_ix) |
|
|
349 | LEAVE; |
|
|
350 | |
|
|
351 | while (PL_curstackinfo->si_next) |
|
|
352 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
353 | |
|
|
354 | while (PL_curstackinfo) |
|
|
355 | { |
|
|
356 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
357 | |
|
|
358 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
|
|
359 | Safefree(PL_curstackinfo->si_cxstack); |
|
|
360 | Safefree(PL_curstackinfo); |
|
|
361 | PL_curstackinfo = p; |
|
|
362 | } |
|
|
363 | |
|
|
364 | if (PL_scopestack_ix != 0) |
|
|
365 | Perl_warner(aTHX_ WARN_INTERNAL, |
|
|
366 | "Unbalanced scopes: %ld more ENTERs than LEAVEs\n", |
|
|
367 | (long)PL_scopestack_ix); |
|
|
368 | if (PL_savestack_ix != 0) |
|
|
369 | Perl_warner(aTHX_ WARN_INTERNAL, |
|
|
370 | "Unbalanced saves: %ld more saves than restores\n", |
|
|
371 | (long)PL_savestack_ix); |
|
|
372 | if (PL_tmps_floor != -1) |
|
|
373 | Perl_warner(aTHX_ WARN_INTERNAL,"Unbalanced tmps: %ld more allocs than frees\n", |
|
|
374 | (long)PL_tmps_floor + 1); |
|
|
375 | /* |
|
|
376 | */ |
|
|
377 | Safefree(PL_tmps_stack); |
|
|
378 | Safefree(PL_markstack); |
|
|
379 | Safefree(PL_scopestack); |
|
|
380 | Safefree(PL_savestack); |
|
|
381 | Safefree(PL_retstack); |
|
|
382 | } |
|
|
383 | |
|
|
384 | #define SUB_INIT "Coro::State::_newcoro" |
|
|
385 | |
|
|
386 | MODULE = Coro::State PACKAGE = Coro::State |
|
|
387 | |
|
|
388 | PROTOTYPES: ENABLE |
|
|
389 | |
|
|
390 | BOOT: |
|
|
391 | if (!padlist_cache) |
|
|
392 | padlist_cache = newHV (); |
|
|
393 | |
|
|
394 | Coro::State |
|
|
395 | _newprocess(args) |
|
|
396 | SV * args |
|
|
397 | PROTOTYPE: $ |
3547 | PROTOTYPE: $ |
|
|
3548 | ALIAS: |
|
|
3549 | is_ready = CF_READY |
|
|
3550 | is_running = CF_RUNNING |
|
|
3551 | is_new = CF_NEW |
|
|
3552 | is_destroyed = CF_ZOMBIE |
|
|
3553 | is_zombie = CF_ZOMBIE |
|
|
3554 | is_suspended = CF_SUSPENDED |
|
|
3555 | CODE: |
|
|
3556 | RETVAL = boolSV (coro->flags & ix); |
|
|
3557 | OUTPUT: |
|
|
3558 | RETVAL |
|
|
3559 | |
|
|
3560 | void |
|
|
3561 | throw (Coro::State self, SV *exception = &PL_sv_undef) |
|
|
3562 | PROTOTYPE: $;$ |
398 | CODE: |
3563 | CODE: |
399 | Coro__State coro; |
3564 | { |
|
|
3565 | struct coro *current = SvSTATE_current; |
|
|
3566 | SV **exceptionp = self == current ? &CORO_THROW : &self->except; |
|
|
3567 | SvREFCNT_dec (*exceptionp); |
|
|
3568 | SvGETMAGIC (exception); |
|
|
3569 | *exceptionp = SvOK (exception) ? newSVsv (exception) : 0; |
|
|
3570 | } |
400 | |
3571 | |
401 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
3572 | void |
402 | croak ("Coro::State::newprocess expects an arrayref"); |
3573 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
3574 | PROTOTYPE: $;$ |
|
|
3575 | C_ARGS: aTHX_ coro, flags |
|
|
3576 | |
|
|
3577 | SV * |
|
|
3578 | has_cctx (Coro::State coro) |
|
|
3579 | PROTOTYPE: $ |
|
|
3580 | CODE: |
|
|
3581 | /* maybe manage the running flag differently */ |
|
|
3582 | RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING)); |
|
|
3583 | OUTPUT: |
|
|
3584 | RETVAL |
|
|
3585 | |
|
|
3586 | int |
|
|
3587 | is_traced (Coro::State coro) |
|
|
3588 | PROTOTYPE: $ |
|
|
3589 | CODE: |
|
|
3590 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
3591 | OUTPUT: |
|
|
3592 | RETVAL |
|
|
3593 | |
|
|
3594 | UV |
|
|
3595 | rss (Coro::State coro) |
|
|
3596 | PROTOTYPE: $ |
|
|
3597 | ALIAS: |
|
|
3598 | usecount = 1 |
|
|
3599 | CODE: |
|
|
3600 | switch (ix) |
|
|
3601 | { |
|
|
3602 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
3603 | case 1: RETVAL = coro->usecount; break; |
403 | |
3604 | } |
404 | New (0, coro, 1, struct coro); |
3605 | OUTPUT: |
405 | |
|
|
406 | coro->mainstack = 0; /* actual work is done inside transfer */ |
|
|
407 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
|
|
408 | |
|
|
409 | RETVAL = coro; |
3606 | RETVAL |
|
|
3607 | |
|
|
3608 | void |
|
|
3609 | force_cctx () |
|
|
3610 | PROTOTYPE: |
|
|
3611 | CODE: |
|
|
3612 | cctx_current->idle_sp = 0; |
|
|
3613 | |
|
|
3614 | void |
|
|
3615 | swap_defsv (Coro::State self) |
|
|
3616 | PROTOTYPE: $ |
|
|
3617 | ALIAS: |
|
|
3618 | swap_defav = 1 |
|
|
3619 | CODE: |
|
|
3620 | if (!self->slot) |
|
|
3621 | croak ("cannot swap state with coroutine that has no saved state,"); |
|
|
3622 | else |
|
|
3623 | { |
|
|
3624 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
3625 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
|
|
3626 | |
|
|
3627 | SV *tmp = *src; *src = *dst; *dst = tmp; |
|
|
3628 | } |
|
|
3629 | |
|
|
3630 | void |
|
|
3631 | cancel (Coro::State self) |
|
|
3632 | CODE: |
|
|
3633 | coro_state_destroy (aTHX_ self); |
|
|
3634 | |
|
|
3635 | SV * |
|
|
3636 | enable_times (int enabled = enable_times) |
|
|
3637 | CODE: |
|
|
3638 | { |
|
|
3639 | RETVAL = boolSV (enable_times); |
|
|
3640 | |
|
|
3641 | if (enabled != enable_times) |
|
|
3642 | { |
|
|
3643 | enable_times = enabled; |
|
|
3644 | |
|
|
3645 | coro_times_update (); |
|
|
3646 | (enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current)); |
|
|
3647 | } |
|
|
3648 | } |
410 | OUTPUT: |
3649 | OUTPUT: |
411 | RETVAL |
3650 | RETVAL |
412 | |
3651 | |
413 | void |
3652 | void |
414 | transfer(prev,next) |
3653 | times (Coro::State self) |
415 | Coro::State_or_hashref prev |
3654 | PPCODE: |
416 | Coro::State_or_hashref next |
3655 | { |
|
|
3656 | struct coro *current = SvSTATE (coro_current); |
|
|
3657 | |
|
|
3658 | if (expect_false (current == self)) |
|
|
3659 | { |
|
|
3660 | coro_times_update (); |
|
|
3661 | coro_times_add (SvSTATE (coro_current)); |
|
|
3662 | } |
|
|
3663 | |
|
|
3664 | EXTEND (SP, 2); |
|
|
3665 | PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9))); |
|
|
3666 | PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9))); |
|
|
3667 | |
|
|
3668 | if (expect_false (current == self)) |
|
|
3669 | coro_times_sub (SvSTATE (coro_current)); |
|
|
3670 | } |
|
|
3671 | |
|
|
3672 | void |
|
|
3673 | swap_sv (Coro::State coro, SV *sv, SV *swapsv) |
|
|
3674 | CODE: |
|
|
3675 | { |
|
|
3676 | struct coro *current = SvSTATE_current; |
|
|
3677 | |
|
|
3678 | if (current == coro) |
|
|
3679 | SWAP_SVS (current); |
|
|
3680 | |
|
|
3681 | if (!coro->swap_sv) |
|
|
3682 | coro->swap_sv = newAV (); |
|
|
3683 | |
|
|
3684 | av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv ))); |
|
|
3685 | av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv))); |
|
|
3686 | |
|
|
3687 | if (current == coro) |
|
|
3688 | SWAP_SVS (current); |
|
|
3689 | } |
|
|
3690 | |
|
|
3691 | |
|
|
3692 | MODULE = Coro::State PACKAGE = Coro |
|
|
3693 | |
|
|
3694 | BOOT: |
|
|
3695 | { |
|
|
3696 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
3697 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
3698 | cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); |
|
|
3699 | coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
|
|
3700 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
3701 | av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); |
|
|
3702 | sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); |
|
|
3703 | sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); |
|
|
3704 | |
|
|
3705 | sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
|
|
3706 | sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
|
|
3707 | cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
|
|
3708 | CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */ |
|
|
3709 | |
|
|
3710 | coro_stash = gv_stashpv ("Coro", TRUE); |
|
|
3711 | |
|
|
3712 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX)); |
|
|
3713 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH)); |
|
|
3714 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL)); |
|
|
3715 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW)); |
|
|
3716 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE)); |
|
|
3717 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN)); |
|
|
3718 | |
|
|
3719 | { |
|
|
3720 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
|
|
3721 | |
|
|
3722 | coroapi.schedule = api_schedule; |
|
|
3723 | coroapi.schedule_to = api_schedule_to; |
|
|
3724 | coroapi.cede = api_cede; |
|
|
3725 | coroapi.cede_notself = api_cede_notself; |
|
|
3726 | coroapi.ready = api_ready; |
|
|
3727 | coroapi.is_ready = api_is_ready; |
|
|
3728 | coroapi.nready = coro_nready; |
|
|
3729 | coroapi.current = coro_current; |
|
|
3730 | |
|
|
3731 | /*GCoroAPI = &coroapi;*/ |
|
|
3732 | sv_setiv (sv, (IV)&coroapi); |
|
|
3733 | SvREADONLY_on (sv); |
|
|
3734 | } |
|
|
3735 | } |
|
|
3736 | |
|
|
3737 | SV * |
|
|
3738 | async (...) |
|
|
3739 | PROTOTYPE: &@ |
417 | CODE: |
3740 | CODE: |
|
|
3741 | RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1); |
|
|
3742 | api_ready (aTHX_ RETVAL); |
|
|
3743 | OUTPUT: |
|
|
3744 | RETVAL |
418 | |
3745 | |
419 | if (prev != next) |
3746 | void |
|
|
3747 | _destroy (Coro::State coro) |
|
|
3748 | CODE: |
|
|
3749 | /* used by the manager thread */ |
|
|
3750 | coro_state_destroy (aTHX_ coro); |
|
|
3751 | |
|
|
3752 | void |
|
|
3753 | on_destroy (Coro::State coro, SV *cb) |
|
|
3754 | CODE: |
|
|
3755 | coro_push_on_destroy (aTHX_ coro, newSVsv (cb)); |
|
|
3756 | |
|
|
3757 | void |
|
|
3758 | join (...) |
|
|
3759 | CODE: |
|
|
3760 | CORO_EXECUTE_SLF_XS (slf_init_join); |
|
|
3761 | |
|
|
3762 | void |
|
|
3763 | terminate (...) |
|
|
3764 | CODE: |
|
|
3765 | CORO_EXECUTE_SLF_XS (slf_init_terminate); |
|
|
3766 | |
|
|
3767 | void |
|
|
3768 | cancel (...) |
|
|
3769 | CODE: |
|
|
3770 | CORO_EXECUTE_SLF_XS (slf_init_cancel); |
|
|
3771 | |
|
|
3772 | int |
|
|
3773 | safe_cancel (Coro::State self, ...) |
|
|
3774 | C_ARGS: aTHX_ self, &ST (1), items - 1 |
|
|
3775 | |
|
|
3776 | void |
|
|
3777 | schedule (...) |
|
|
3778 | CODE: |
|
|
3779 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
3780 | |
|
|
3781 | void |
|
|
3782 | schedule_to (...) |
|
|
3783 | CODE: |
|
|
3784 | CORO_EXECUTE_SLF_XS (slf_init_schedule_to); |
|
|
3785 | |
|
|
3786 | void |
|
|
3787 | cede_to (...) |
|
|
3788 | CODE: |
|
|
3789 | CORO_EXECUTE_SLF_XS (slf_init_cede_to); |
|
|
3790 | |
|
|
3791 | void |
|
|
3792 | cede (...) |
|
|
3793 | CODE: |
|
|
3794 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
3795 | |
|
|
3796 | void |
|
|
3797 | cede_notself (...) |
|
|
3798 | CODE: |
|
|
3799 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
3800 | |
|
|
3801 | void |
|
|
3802 | _set_current (SV *current) |
|
|
3803 | PROTOTYPE: $ |
|
|
3804 | CODE: |
|
|
3805 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
3806 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
3807 | |
|
|
3808 | void |
|
|
3809 | _set_readyhook (SV *hook) |
|
|
3810 | PROTOTYPE: $ |
|
|
3811 | CODE: |
|
|
3812 | SvREFCNT_dec (coro_readyhook); |
|
|
3813 | SvGETMAGIC (hook); |
|
|
3814 | if (SvOK (hook)) |
|
|
3815 | { |
|
|
3816 | coro_readyhook = newSVsv (hook); |
|
|
3817 | CORO_READYHOOK = invoke_sv_ready_hook_helper; |
|
|
3818 | } |
|
|
3819 | else |
420 | { |
3820 | { |
421 | /* |
3821 | coro_readyhook = 0; |
422 | * this could be done in newprocess which would lead to |
3822 | CORO_READYHOOK = 0; |
423 | * extremely elegant and fast (just SAVE/LOAD) |
|
|
424 | * code here, but lazy allocation of stacks has also |
|
|
425 | * some virtues and the overhead of the if() is nil. |
|
|
426 | */ |
|
|
427 | if (next->mainstack) |
|
|
428 | { |
|
|
429 | SAVE (prev); |
|
|
430 | LOAD (next); |
|
|
431 | /* mark this state as in-use */ |
|
|
432 | next->mainstack = 0; |
|
|
433 | next->tmps_ix = -2; |
|
|
434 | } |
|
|
435 | else if (next->tmps_ix == -2) |
|
|
436 | { |
|
|
437 | croak ("tried to transfer to running coroutine"); |
|
|
438 | } |
|
|
439 | else |
|
|
440 | { |
|
|
441 | SAVE (prev); |
|
|
442 | |
|
|
443 | /* |
|
|
444 | * emulate part of the perl startup here. |
|
|
445 | */ |
|
|
446 | UNOP myop; |
|
|
447 | |
|
|
448 | init_stacks (); /* from perl.c */ |
|
|
449 | PL_op = (OP *)&myop; |
|
|
450 | /*PL_curcop = 0;*/ |
|
|
451 | GvAV (PL_defgv) = (AV *)SvREFCNT_inc ((SV *)next->args); |
|
|
452 | |
|
|
453 | SPAGAIN; |
|
|
454 | Zero(&myop, 1, UNOP); |
|
|
455 | myop.op_next = Nullop; |
|
|
456 | myop.op_flags = OPf_WANT_VOID; |
|
|
457 | |
|
|
458 | PUSHMARK(SP); |
|
|
459 | XPUSHs ((SV*)get_cv(SUB_INIT, TRUE)); |
|
|
460 | PUTBACK; |
|
|
461 | /* |
|
|
462 | * the next line is slightly wrong, as PL_op->op_next |
|
|
463 | * is actually being executed so we skip the first op. |
|
|
464 | * that doesn't matter, though, since it is only |
|
|
465 | * pp_nextstate and we never return... |
|
|
466 | */ |
|
|
467 | PL_op = Perl_pp_entersub(aTHX); |
|
|
468 | SPAGAIN; |
|
|
469 | |
|
|
470 | ENTER; |
|
|
471 | } |
|
|
472 | } |
3823 | } |
473 | |
3824 | |
|
|
3825 | int |
|
|
3826 | prio (Coro::State coro, int newprio = 0) |
|
|
3827 | PROTOTYPE: $;$ |
|
|
3828 | ALIAS: |
|
|
3829 | nice = 1 |
|
|
3830 | CODE: |
|
|
3831 | { |
|
|
3832 | RETVAL = coro->prio; |
|
|
3833 | |
|
|
3834 | if (items > 1) |
|
|
3835 | { |
|
|
3836 | if (ix) |
|
|
3837 | newprio = coro->prio - newprio; |
|
|
3838 | |
|
|
3839 | if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN; |
|
|
3840 | if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX; |
|
|
3841 | |
|
|
3842 | coro->prio = newprio; |
|
|
3843 | } |
|
|
3844 | } |
|
|
3845 | OUTPUT: |
|
|
3846 | RETVAL |
|
|
3847 | |
|
|
3848 | SV * |
|
|
3849 | ready (SV *self) |
|
|
3850 | PROTOTYPE: $ |
|
|
3851 | CODE: |
|
|
3852 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
3853 | OUTPUT: |
|
|
3854 | RETVAL |
|
|
3855 | |
|
|
3856 | int |
|
|
3857 | nready (...) |
|
|
3858 | PROTOTYPE: |
|
|
3859 | CODE: |
|
|
3860 | RETVAL = coro_nready; |
|
|
3861 | OUTPUT: |
|
|
3862 | RETVAL |
|
|
3863 | |
474 | void |
3864 | void |
475 | DESTROY(coro) |
3865 | suspend (Coro::State self) |
476 | Coro::State coro |
3866 | PROTOTYPE: $ |
|
|
3867 | CODE: |
|
|
3868 | self->flags |= CF_SUSPENDED; |
|
|
3869 | |
|
|
3870 | void |
|
|
3871 | resume (Coro::State self) |
|
|
3872 | PROTOTYPE: $ |
|
|
3873 | CODE: |
|
|
3874 | self->flags &= ~CF_SUSPENDED; |
|
|
3875 | |
|
|
3876 | void |
|
|
3877 | _pool_handler (...) |
|
|
3878 | CODE: |
|
|
3879 | CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
|
|
3880 | |
|
|
3881 | void |
|
|
3882 | async_pool (SV *cv, ...) |
|
|
3883 | PROTOTYPE: &@ |
|
|
3884 | PPCODE: |
|
|
3885 | { |
|
|
3886 | HV *hv = (HV *)av_pop (av_async_pool); |
|
|
3887 | AV *av = newAV (); |
|
|
3888 | SV *cb = ST (0); |
|
|
3889 | int i; |
|
|
3890 | |
|
|
3891 | av_extend (av, items - 2); |
|
|
3892 | for (i = 1; i < items; ++i) |
|
|
3893 | av_push (av, SvREFCNT_inc_NN (ST (i))); |
|
|
3894 | |
|
|
3895 | if ((SV *)hv == &PL_sv_undef) |
|
|
3896 | { |
|
|
3897 | SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1); |
|
|
3898 | hv = (HV *)SvREFCNT_inc_NN (SvRV (sv)); |
|
|
3899 | SvREFCNT_dec (sv); |
|
|
3900 | } |
|
|
3901 | |
|
|
3902 | { |
|
|
3903 | struct coro *coro = SvSTATE_hv (hv); |
|
|
3904 | |
|
|
3905 | assert (!coro->invoke_cb); |
|
|
3906 | assert (!coro->invoke_av); |
|
|
3907 | coro->invoke_cb = SvREFCNT_inc (cb); |
|
|
3908 | coro->invoke_av = av; |
|
|
3909 | } |
|
|
3910 | |
|
|
3911 | api_ready (aTHX_ (SV *)hv); |
|
|
3912 | |
|
|
3913 | if (GIMME_V != G_VOID) |
|
|
3914 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
|
|
3915 | else |
|
|
3916 | SvREFCNT_dec (hv); |
|
|
3917 | } |
|
|
3918 | |
|
|
3919 | SV * |
|
|
3920 | rouse_cb () |
|
|
3921 | PROTOTYPE: |
|
|
3922 | CODE: |
|
|
3923 | RETVAL = coro_new_rouse_cb (aTHX); |
|
|
3924 | OUTPUT: |
|
|
3925 | RETVAL |
|
|
3926 | |
|
|
3927 | void |
|
|
3928 | rouse_wait (...) |
|
|
3929 | PROTOTYPE: ;$ |
|
|
3930 | PPCODE: |
|
|
3931 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
|
|
3932 | |
|
|
3933 | void |
|
|
3934 | on_enter (SV *block) |
|
|
3935 | ALIAS: |
|
|
3936 | on_leave = 1 |
|
|
3937 | PROTOTYPE: & |
|
|
3938 | CODE: |
|
|
3939 | { |
|
|
3940 | struct coro *coro = SvSTATE_current; |
|
|
3941 | AV **avp = ix ? &coro->on_leave : &coro->on_enter; |
|
|
3942 | |
|
|
3943 | block = s_get_cv_croak (block); |
|
|
3944 | |
|
|
3945 | if (!*avp) |
|
|
3946 | *avp = newAV (); |
|
|
3947 | |
|
|
3948 | av_push (*avp, SvREFCNT_inc (block)); |
|
|
3949 | |
|
|
3950 | if (!ix) |
|
|
3951 | on_enterleave_call (aTHX_ block); |
|
|
3952 | |
|
|
3953 | LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
|
|
3954 | SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro); |
|
|
3955 | ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */ |
|
|
3956 | } |
|
|
3957 | |
|
|
3958 | |
|
|
3959 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
3960 | |
|
|
3961 | BOOT: |
|
|
3962 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
3963 | |
|
|
3964 | |
|
|
3965 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
3966 | |
|
|
3967 | SV * |
|
|
3968 | new (SV *klass, SV *count = 0) |
|
|
3969 | CODE: |
|
|
3970 | { |
|
|
3971 | int semcnt = 1; |
|
|
3972 | |
|
|
3973 | if (count) |
|
|
3974 | { |
|
|
3975 | SvGETMAGIC (count); |
|
|
3976 | |
|
|
3977 | if (SvOK (count)) |
|
|
3978 | semcnt = SvIV (count); |
|
|
3979 | } |
|
|
3980 | |
|
|
3981 | RETVAL = sv_bless ( |
|
|
3982 | coro_waitarray_new (aTHX_ semcnt), |
|
|
3983 | GvSTASH (CvGV (cv)) |
|
|
3984 | ); |
|
|
3985 | } |
|
|
3986 | OUTPUT: |
|
|
3987 | RETVAL |
|
|
3988 | |
|
|
3989 | # helper for Coro::Channel and others |
|
|
3990 | SV * |
|
|
3991 | _alloc (int count) |
|
|
3992 | CODE: |
|
|
3993 | RETVAL = coro_waitarray_new (aTHX_ count); |
|
|
3994 | OUTPUT: |
|
|
3995 | RETVAL |
|
|
3996 | |
|
|
3997 | SV * |
|
|
3998 | count (SV *self) |
|
|
3999 | CODE: |
|
|
4000 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
4001 | OUTPUT: |
|
|
4002 | RETVAL |
|
|
4003 | |
|
|
4004 | void |
|
|
4005 | up (SV *self, int adjust = 1) |
|
|
4006 | ALIAS: |
|
|
4007 | adjust = 1 |
477 | CODE: |
4008 | CODE: |
|
|
4009 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
478 | |
4010 | |
479 | if (coro->mainstack) |
4011 | void |
|
|
4012 | down (...) |
|
|
4013 | CODE: |
|
|
4014 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
4015 | |
|
|
4016 | void |
|
|
4017 | wait (...) |
|
|
4018 | CODE: |
|
|
4019 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
|
|
4020 | |
|
|
4021 | void |
|
|
4022 | try (SV *self) |
|
|
4023 | PPCODE: |
|
|
4024 | { |
|
|
4025 | AV *av = (AV *)SvRV (self); |
|
|
4026 | SV *count_sv = AvARRAY (av)[0]; |
|
|
4027 | IV count = SvIVX (count_sv); |
|
|
4028 | |
|
|
4029 | if (count > 0) |
480 | { |
4030 | { |
481 | struct coro temp; |
4031 | --count; |
482 | |
4032 | SvIVX (count_sv) = count; |
483 | SAVE(aTHX_ (&temp)); |
4033 | XSRETURN_YES; |
484 | LOAD(aTHX_ coro); |
|
|
485 | |
|
|
486 | destroy_stacks (); |
|
|
487 | SvREFCNT_dec ((SV *)GvAV (PL_defgv)); |
|
|
488 | |
|
|
489 | LOAD((&temp)); |
|
|
490 | } |
4034 | } |
|
|
4035 | else |
|
|
4036 | XSRETURN_NO; |
|
|
4037 | } |
491 | |
4038 | |
492 | SvREFCNT_dec (coro->args); |
4039 | void |
493 | Safefree (coro); |
4040 | waiters (SV *self) |
|
|
4041 | PPCODE: |
|
|
4042 | { |
|
|
4043 | AV *av = (AV *)SvRV (self); |
|
|
4044 | int wcount = AvFILLp (av) + 1 - 1; |
494 | |
4045 | |
|
|
4046 | if (GIMME_V == G_SCALAR) |
|
|
4047 | XPUSHs (sv_2mortal (newSViv (wcount))); |
|
|
4048 | else |
|
|
4049 | { |
|
|
4050 | int i; |
|
|
4051 | EXTEND (SP, wcount); |
|
|
4052 | for (i = 1; i <= wcount; ++i) |
|
|
4053 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
|
|
4054 | } |
|
|
4055 | } |
495 | |
4056 | |
|
|
4057 | MODULE = Coro::State PACKAGE = Coro::SemaphoreSet |
|
|
4058 | |
|
|
4059 | void |
|
|
4060 | _may_delete (SV *sem, int count, int extra_refs) |
|
|
4061 | PPCODE: |
|
|
4062 | { |
|
|
4063 | AV *av = (AV *)SvRV (sem); |
|
|
4064 | |
|
|
4065 | if (SvREFCNT ((SV *)av) == 1 + extra_refs |
|
|
4066 | && AvFILLp (av) == 0 /* no waiters, just count */ |
|
|
4067 | && SvIV (AvARRAY (av)[0]) == count) |
|
|
4068 | XSRETURN_YES; |
|
|
4069 | |
|
|
4070 | XSRETURN_NO; |
|
|
4071 | } |
|
|
4072 | |
|
|
4073 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
4074 | |
|
|
4075 | SV * |
|
|
4076 | new (SV *klass) |
|
|
4077 | CODE: |
|
|
4078 | RETVAL = sv_bless ( |
|
|
4079 | coro_waitarray_new (aTHX_ 0), |
|
|
4080 | GvSTASH (CvGV (cv)) |
|
|
4081 | ); |
|
|
4082 | OUTPUT: |
|
|
4083 | RETVAL |
|
|
4084 | |
|
|
4085 | void |
|
|
4086 | wait (...) |
|
|
4087 | CODE: |
|
|
4088 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
|
|
4089 | |
|
|
4090 | void |
|
|
4091 | broadcast (SV *self) |
|
|
4092 | CODE: |
|
|
4093 | { |
|
|
4094 | AV *av = (AV *)SvRV (self); |
|
|
4095 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
4096 | } |
|
|
4097 | |
|
|
4098 | void |
|
|
4099 | send (SV *self) |
|
|
4100 | CODE: |
|
|
4101 | { |
|
|
4102 | AV *av = (AV *)SvRV (self); |
|
|
4103 | |
|
|
4104 | if (AvFILLp (av)) |
|
|
4105 | coro_signal_wake (aTHX_ av, 1); |
|
|
4106 | else |
|
|
4107 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
4108 | } |
|
|
4109 | |
|
|
4110 | IV |
|
|
4111 | awaited (SV *self) |
|
|
4112 | CODE: |
|
|
4113 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
4114 | OUTPUT: |
|
|
4115 | RETVAL |
|
|
4116 | |
|
|
4117 | |
|
|
4118 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
4119 | |
|
|
4120 | BOOT: |
|
|
4121 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
4122 | |
|
|
4123 | void |
|
|
4124 | _schedule (...) |
|
|
4125 | CODE: |
|
|
4126 | { |
|
|
4127 | static int incede; |
|
|
4128 | |
|
|
4129 | api_cede_notself (aTHX); |
|
|
4130 | |
|
|
4131 | ++incede; |
|
|
4132 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
4133 | ; |
|
|
4134 | |
|
|
4135 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
4136 | if (coro_nready >= incede) |
|
|
4137 | { |
|
|
4138 | PUSHMARK (SP); |
|
|
4139 | PUTBACK; |
|
|
4140 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
4141 | } |
|
|
4142 | |
|
|
4143 | --incede; |
|
|
4144 | } |
|
|
4145 | |
|
|
4146 | |
|
|
4147 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
4148 | |
|
|
4149 | void |
|
|
4150 | _register (char *target, char *proto, SV *req) |
|
|
4151 | CODE: |
|
|
4152 | { |
|
|
4153 | SV *req_cv = s_get_cv_croak (req); |
|
|
4154 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
4155 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
4156 | sv_setpv ((SV *)slf_cv, proto); |
|
|
4157 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
4158 | } |
|
|
4159 | |
|
|
4160 | MODULE = Coro::State PACKAGE = Coro::Select |
|
|
4161 | |
|
|
4162 | void |
|
|
4163 | patch_pp_sselect () |
|
|
4164 | CODE: |
|
|
4165 | if (!coro_old_pp_sselect) |
|
|
4166 | { |
|
|
4167 | coro_select_select = (SV *)get_cv ("Coro::Select::select", 0); |
|
|
4168 | coro_old_pp_sselect = PL_ppaddr [OP_SSELECT]; |
|
|
4169 | PL_ppaddr [OP_SSELECT] = coro_pp_sselect; |
|
|
4170 | } |
|
|
4171 | |
|
|
4172 | void |
|
|
4173 | unpatch_pp_sselect () |
|
|
4174 | CODE: |
|
|
4175 | if (coro_old_pp_sselect) |
|
|
4176 | { |
|
|
4177 | PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect; |
|
|
4178 | coro_old_pp_sselect = 0; |
|
|
4179 | } |
|
|
4180 | |