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1 | #include "libcoro/coro.c" |
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2 | |
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3 | #define PERL_NO_GET_CONTEXT |
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4 | #define PERL_EXT |
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5 | |
1 | #include "EXTERN.h" |
6 | #include "EXTERN.h" |
2 | #include "perl.h" |
7 | #include "perl.h" |
3 | #include "XSUB.h" |
8 | #include "XSUB.h" |
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9 | #include "perliol.h" |
4 | |
10 | |
5 | #if 1 |
11 | #include "patchlevel.h" |
6 | # define CHK(x) (void *)0 |
12 | |
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13 | #include <stdio.h> |
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14 | #include <errno.h> |
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15 | #include <assert.h> |
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16 | |
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17 | #ifdef WIN32 |
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18 | # undef setjmp |
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19 | # undef longjmp |
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20 | # undef _exit |
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21 | # define setjmp _setjmp /* deep magic */ |
7 | #else |
22 | #else |
8 | # define CHK(x) if (!(x)) croak("FATAL, CHK: " #x) |
23 | # include <inttypes.h> /* most portable stdint.h */ |
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24 | #endif |
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25 | |
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26 | #ifdef HAVE_MMAP |
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27 | # include <unistd.h> |
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28 | # include <sys/mman.h> |
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29 | # ifndef MAP_ANONYMOUS |
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30 | # ifdef MAP_ANON |
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31 | # define MAP_ANONYMOUS MAP_ANON |
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32 | # else |
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33 | # undef HAVE_MMAP |
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34 | # endif |
9 | #endif |
35 | # endif |
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36 | # include <limits.h> |
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37 | # ifndef PAGESIZE |
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38 | # define PAGESIZE pagesize |
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39 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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40 | static long pagesize; |
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41 | # else |
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42 | # define BOOT_PAGESIZE (void)0 |
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43 | # endif |
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44 | #else |
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45 | # define PAGESIZE 0 |
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46 | # define BOOT_PAGESIZE (void)0 |
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47 | #endif |
10 | |
48 | |
11 | #define MAY_FLUSH /* increases codesize */ |
49 | #if CORO_USE_VALGRIND |
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50 | # include <valgrind/valgrind.h> |
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51 | #endif |
12 | |
52 | |
13 | #define SUB_INIT "Coro::State::_newcoro" |
53 | /* the maximum number of idle cctx that will be pooled */ |
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54 | static int cctx_max_idle = 4; |
14 | |
55 | |
15 | #define SAVE_DEFAV 0x00000001 |
56 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
16 | #define SAVE_DEFSV 0x00000002 |
57 | (PERL_REVISION > (a) \ |
17 | #define SAVE_ERRSV 0x00000004 |
58 | || (PERL_REVISION == (a) \ |
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59 | && (PERL_VERSION > (b) \ |
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60 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
18 | |
61 | |
19 | #define SAVE_ALL -1 |
62 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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63 | # ifndef PL_ppaddr |
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64 | # define PL_ppaddr ppaddr |
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65 | # endif |
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66 | # ifndef call_sv |
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67 | # define call_sv perl_call_sv |
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68 | # endif |
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69 | # ifndef get_sv |
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70 | # define get_sv perl_get_sv |
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71 | # endif |
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72 | # ifndef get_cv |
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73 | # define get_cv perl_get_cv |
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74 | # endif |
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75 | # ifndef IS_PADGV |
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76 | # define IS_PADGV(v) 0 |
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77 | # endif |
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78 | # ifndef IS_PADCONST |
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79 | # define IS_PADCONST(v) 0 |
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80 | # endif |
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81 | #endif |
20 | |
82 | |
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83 | /* 5.11 */ |
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84 | #ifndef CxHASARGS |
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85 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
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86 | #endif |
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87 | |
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88 | /* 5.10.0 */ |
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89 | #ifndef SvREFCNT_inc_NN |
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90 | # define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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91 | #endif |
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92 | |
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93 | /* 5.8.8 */ |
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94 | #ifndef GV_NOTQUAL |
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95 | # define GV_NOTQUAL 0 |
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96 | #endif |
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97 | #ifndef newSV |
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98 | # define newSV(l) NEWSV(0,l) |
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99 | #endif |
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100 | #ifndef CvISXSUB_on |
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101 | # define CvISXSUB_on(cv) (void)cv |
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102 | #endif |
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103 | |
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104 | /* 5.8.7 */ |
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105 | #ifndef SvRV_set |
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106 | # define SvRV_set(s,v) SvRV(s) = (v) |
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107 | #endif |
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108 | |
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109 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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110 | # undef CORO_STACKGUARD |
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111 | #endif |
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112 | |
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113 | #ifndef CORO_STACKGUARD |
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114 | # define CORO_STACKGUARD 0 |
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115 | #endif |
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116 | |
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117 | /* prefer perl internal functions over our own? */ |
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118 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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119 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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120 | #endif |
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121 | |
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122 | /* The next macros try to return the current stack pointer, in an as |
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123 | * portable way as possible. */ |
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124 | #if __GNUC__ >= 4 |
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125 | # define dSTACKLEVEL int stacklevel_dummy |
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126 | # define STACKLEVEL __builtin_frame_address (0) |
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127 | #else |
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128 | # define dSTACKLEVEL volatile void *stacklevel |
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129 | # define STACKLEVEL ((void *)&stacklevel) |
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130 | #endif |
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131 | |
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132 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
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133 | |
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134 | #if __GNUC__ >= 3 |
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135 | # define attribute(x) __attribute__(x) |
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136 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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137 | # define INLINE static inline |
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138 | #else |
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139 | # define attribute(x) |
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140 | # define expect(expr,value) (expr) |
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141 | # define INLINE static |
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142 | #endif |
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143 | |
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144 | #define expect_false(expr) expect ((expr) != 0, 0) |
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145 | #define expect_true(expr) expect ((expr) != 0, 1) |
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146 | |
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147 | #define NOINLINE attribute ((noinline)) |
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148 | |
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149 | #include "CoroAPI.h" |
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150 | #define GCoroAPI (&coroapi) /* very sneaky */ |
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151 | |
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152 | #ifdef USE_ITHREADS |
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153 | # if CORO_PTHREAD |
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154 | static void *coro_thx; |
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155 | # endif |
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156 | #endif |
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157 | |
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158 | static double (*nvtime)(); /* so why doesn't it take void? */ |
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159 | |
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160 | /* we hijack an hopefully unused CV flag for our purposes */ |
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161 | #define CVf_SLF 0x4000 |
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162 | static OP *pp_slf (pTHX); |
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163 | |
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164 | static U32 cctx_gen; |
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165 | static size_t cctx_stacksize = CORO_STACKSIZE; |
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166 | static struct CoroAPI coroapi; |
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167 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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168 | static JMPENV *main_top_env; |
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169 | static HV *coro_state_stash, *coro_stash; |
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170 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
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171 | |
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172 | static GV *irsgv; /* $/ */ |
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173 | static GV *stdoutgv; /* *STDOUT */ |
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174 | static SV *rv_diehook; |
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175 | static SV *rv_warnhook; |
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176 | static HV *hv_sig; /* %SIG */ |
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177 | |
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178 | /* async_pool helper stuff */ |
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179 | static SV *sv_pool_rss; |
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180 | static SV *sv_pool_size; |
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181 | static AV *av_async_pool; |
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182 | |
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183 | /* Coro::AnyEvent */ |
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184 | static SV *sv_activity; |
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185 | |
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186 | static struct coro_cctx *cctx_first; |
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187 | static int cctx_count, cctx_idle; |
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188 | |
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189 | enum { |
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190 | CC_MAPPED = 0x01, |
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191 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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192 | CC_TRACE = 0x04, |
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193 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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194 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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195 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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196 | }; |
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197 | |
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198 | /* this is a structure representing a c-level coroutine */ |
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199 | typedef struct coro_cctx |
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200 | { |
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201 | struct coro_cctx *next; |
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202 | |
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203 | /* the stack */ |
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204 | void *sptr; |
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205 | size_t ssize; |
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206 | |
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207 | /* cpu state */ |
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208 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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209 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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210 | JMPENV *top_env; |
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211 | coro_context cctx; |
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212 | |
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213 | U32 gen; |
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214 | #if CORO_USE_VALGRIND |
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215 | int valgrind_id; |
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216 | #endif |
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217 | unsigned char flags; |
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218 | } coro_cctx; |
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219 | |
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220 | enum { |
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221 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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222 | CF_READY = 0x0002, /* coroutine is ready */ |
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223 | CF_NEW = 0x0004, /* has never been switched to */ |
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224 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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225 | }; |
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226 | |
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227 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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228 | typedef struct |
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229 | { |
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230 | SV *defsv; |
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231 | AV *defav; |
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232 | SV *errsv; |
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233 | SV *irsgv; |
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234 | #define VAR(name,type) type name; |
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235 | # include "state.h" |
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236 | #undef VAR |
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237 | } perl_slots; |
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238 | |
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239 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
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240 | |
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241 | /* this is a structure representing a perl-level coroutine */ |
21 | struct coro { |
242 | struct coro { |
22 | /* optionally saved, might be zero */ |
243 | /* the C coroutine allocated to this perl coroutine, if any */ |
23 | AV *defav; |
244 | coro_cctx *cctx; |
24 | SV *defsv; |
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25 | SV *errsv; |
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26 | |
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27 | /* saved global state not related to stacks */ |
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28 | U8 dowarn; |
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29 | |
245 | |
30 | /* the stacks and related info (callchain etc..) */ |
246 | /* state data */ |
31 | PERL_SI *curstackinfo; |
247 | struct CoroSLF slf_frame; /* saved slf frame */ |
32 | AV *curstack; |
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33 | AV *mainstack; |
248 | AV *mainstack; |
34 | SV **stack_sp; |
249 | perl_slots *slot; /* basically the saved sp */ |
35 | OP *op; |
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36 | SV **curpad; |
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37 | SV **stack_base; |
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38 | SV **stack_max; |
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39 | SV **tmps_stack; |
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40 | I32 tmps_floor; |
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41 | I32 tmps_ix; |
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42 | I32 tmps_max; |
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43 | I32 *markstack; |
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44 | I32 *markstack_ptr; |
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45 | I32 *markstack_max; |
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46 | I32 *scopestack; |
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47 | I32 scopestack_ix; |
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48 | I32 scopestack_max; |
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49 | ANY *savestack; |
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50 | I32 savestack_ix; |
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51 | I32 savestack_max; |
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52 | OP **retstack; |
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53 | I32 retstack_ix; |
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54 | I32 retstack_max; |
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55 | COP *curcop; |
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56 | |
250 | |
57 | /* data associated with this coroutine (initial args) */ |
251 | AV *args; /* data associated with this coroutine (initial args) */ |
58 | AV *args; |
252 | int refcnt; /* coroutines are refcounted, yes */ |
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253 | int flags; /* CF_ flags */ |
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254 | HV *hv; /* the perl hash associated with this coro, if any */ |
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255 | void (*on_destroy)(pTHX_ struct coro *coro); |
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256 | |
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257 | /* statistics */ |
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258 | int usecount; /* number of transfers to this coro */ |
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259 | |
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260 | /* coro process data */ |
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261 | int prio; |
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262 | SV *except; /* exception to be thrown */ |
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263 | SV *rouse_cb; |
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264 | |
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265 | /* async_pool */ |
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266 | SV *saved_deffh; |
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267 | |
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268 | /* linked list */ |
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269 | struct coro *next, *prev; |
59 | }; |
270 | }; |
60 | |
271 | |
61 | typedef struct coro *Coro__State; |
272 | typedef struct coro *Coro__State; |
62 | typedef struct coro *Coro__State_or_hashref; |
273 | typedef struct coro *Coro__State_or_hashref; |
63 | |
274 | |
64 | static HV *padlist_cache; |
275 | /* the following variables are effectively part of the perl context */ |
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276 | /* and get copied between struct coro and these variables */ |
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277 | /* the mainr easonw e don't support windows process emulation */ |
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278 | static struct CoroSLF slf_frame; /* the current slf frame */ |
65 | |
279 | |
66 | /* mostly copied from op.c:cv_clone2 */ |
280 | /** Coro ********************************************************************/ |
67 | STATIC AV * |
281 | |
68 | clone_padlist (AV *protopadlist) |
282 | #define PRIO_MAX 3 |
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283 | #define PRIO_HIGH 1 |
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284 | #define PRIO_NORMAL 0 |
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285 | #define PRIO_LOW -1 |
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286 | #define PRIO_IDLE -3 |
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287 | #define PRIO_MIN -4 |
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288 | |
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289 | /* for Coro.pm */ |
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290 | static SV *coro_current; |
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291 | static SV *coro_readyhook; |
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292 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
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293 | static struct coro *coro_first; |
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294 | #define coro_nready coroapi.nready |
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295 | |
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296 | /** lowlevel stuff **********************************************************/ |
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297 | |
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298 | static SV * |
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299 | coro_get_sv (pTHX_ const char *name, int create) |
69 | { |
300 | { |
70 | AV *av; |
301 | #if PERL_VERSION_ATLEAST (5,10,0) |
71 | I32 ix; |
302 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
72 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
303 | get_sv (name, create); |
73 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
304 | #endif |
74 | SV **pname = AvARRAY (protopad_name); |
305 | return get_sv (name, create); |
75 | SV **ppad = AvARRAY (protopad); |
306 | } |
76 | I32 fname = AvFILLp (protopad_name); |
307 | |
77 | I32 fpad = AvFILLp (protopad); |
308 | static AV * |
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309 | coro_get_av (pTHX_ const char *name, int create) |
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310 | { |
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311 | #if PERL_VERSION_ATLEAST (5,10,0) |
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312 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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313 | get_av (name, create); |
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314 | #endif |
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315 | return get_av (name, create); |
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316 | } |
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317 | |
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318 | static HV * |
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319 | coro_get_hv (pTHX_ const char *name, int create) |
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320 | { |
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321 | #if PERL_VERSION_ATLEAST (5,10,0) |
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322 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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323 | get_hv (name, create); |
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324 | #endif |
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325 | return get_hv (name, create); |
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326 | } |
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327 | |
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328 | static AV * |
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329 | coro_clone_padlist (pTHX_ CV *cv) |
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330 | { |
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331 | AV *padlist = CvPADLIST (cv); |
78 | AV *newpadlist, *newpad_name, *newpad; |
332 | AV *newpadlist, *newpad; |
79 | SV **npad; |
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80 | |
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81 | newpad_name = newAV (); |
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82 | for (ix = fname; ix >= 0; ix--) |
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83 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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84 | |
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85 | newpad = newAV (); |
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86 | av_fill (newpad, AvFILLp (protopad)); |
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87 | npad = AvARRAY (newpad); |
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88 | |
333 | |
89 | newpadlist = newAV (); |
334 | newpadlist = newAV (); |
90 | AvREAL_off (newpadlist); |
335 | AvREAL_off (newpadlist); |
91 | av_store (newpadlist, 0, (SV *) newpad_name); |
336 | #if PERL_VERSION_ATLEAST (5,10,0) |
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337 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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338 | #else |
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339 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
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340 | #endif |
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341 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
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342 | --AvFILLp (padlist); |
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343 | |
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344 | av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
92 | av_store (newpadlist, 1, (SV *) newpad); |
345 | av_store (newpadlist, 1, (SV *)newpad); |
93 | |
346 | |
94 | av = newAV (); /* will be @_ */ |
347 | return newpadlist; |
95 | av_extend (av, 0); |
348 | } |
96 | av_store (newpad, 0, (SV *) av); |
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97 | AvFLAGS (av) = AVf_REIFY; |
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98 | |
349 | |
99 | for (ix = fpad; ix > 0; ix--) |
350 | static void |
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351 | free_padlist (pTHX_ AV *padlist) |
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352 | { |
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353 | /* may be during global destruction */ |
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354 | if (SvREFCNT (padlist)) |
100 | { |
355 | { |
101 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
356 | I32 i = AvFILLp (padlist); |
102 | if (namesv && namesv != &PL_sv_undef) |
357 | while (i >= 0) |
103 | { |
358 | { |
104 | char *name = SvPVX (namesv); /* XXX */ |
359 | SV **svp = av_fetch (padlist, i--, FALSE); |
105 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
360 | if (svp) |
106 | { /* lexical from outside? */ |
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107 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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108 | } |
361 | { |
109 | else |
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110 | { /* our own lexical */ |
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111 | SV *sv; |
362 | SV *sv; |
112 | if (*name == '&') |
363 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
113 | sv = SvREFCNT_inc (ppad[ix]); |
364 | SvREFCNT_dec (sv); |
114 | else if (*name == '@') |
365 | |
115 | sv = (SV *) newAV (); |
366 | SvREFCNT_dec (*svp); |
116 | else if (*name == '%') |
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117 | sv = (SV *) newHV (); |
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118 | else |
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119 | sv = NEWSV (0, 0); |
|
|
120 | if (!SvPADBUSY (sv)) |
|
|
121 | SvPADMY_on (sv); |
|
|
122 | npad[ix] = sv; |
|
|
123 | } |
367 | } |
124 | } |
368 | } |
125 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
|
|
126 | { |
|
|
127 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
|
|
128 | } |
|
|
129 | else |
|
|
130 | { |
|
|
131 | SV *sv = NEWSV (0, 0); |
|
|
132 | SvPADTMP_on (sv); |
|
|
133 | npad[ix] = sv; |
|
|
134 | } |
|
|
135 | } |
|
|
136 | |
369 | |
137 | #if 0 /* return -ENOTUNDERSTOOD */ |
|
|
138 | /* Now that vars are all in place, clone nested closures. */ |
|
|
139 | |
|
|
140 | for (ix = fpad; ix > 0; ix--) { |
|
|
141 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
|
|
142 | if (namesv |
|
|
143 | && namesv != &PL_sv_undef |
|
|
144 | && !(SvFLAGS(namesv) & SVf_FAKE) |
|
|
145 | && *SvPVX(namesv) == '&' |
|
|
146 | && CvCLONE(ppad[ix])) |
|
|
147 | { |
|
|
148 | CV *kid = cv_clone((CV*)ppad[ix]); |
|
|
149 | SvREFCNT_dec(ppad[ix]); |
|
|
150 | CvCLONE_on(kid); |
|
|
151 | SvPADMY_on(kid); |
|
|
152 | npad[ix] = (SV*)kid; |
|
|
153 | } |
|
|
154 | } |
|
|
155 | #endif |
|
|
156 | |
|
|
157 | return newpadlist; |
|
|
158 | } |
|
|
159 | |
|
|
160 | #ifdef MAY_FLUSH |
|
|
161 | STATIC AV * |
|
|
162 | free_padlist (AV *padlist) |
|
|
163 | { |
|
|
164 | /* may be during global destruction */ |
|
|
165 | if (SvREFCNT(padlist)) |
|
|
166 | { |
|
|
167 | I32 i = AvFILLp(padlist); |
|
|
168 | while (i >= 0) |
|
|
169 | { |
|
|
170 | SV **svp = av_fetch(padlist, i--, FALSE); |
|
|
171 | SV *sv = svp ? *svp : Nullsv; |
|
|
172 | if (sv) |
|
|
173 | SvREFCNT_dec(sv); |
|
|
174 | } |
|
|
175 | |
|
|
176 | SvREFCNT_dec((SV*)padlist); |
370 | SvREFCNT_dec ((SV*)padlist); |
177 | } |
371 | } |
178 | } |
372 | } |
179 | #endif |
373 | |
|
|
374 | static int |
|
|
375 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
376 | { |
|
|
377 | AV *padlist; |
|
|
378 | AV *av = (AV *)mg->mg_obj; |
|
|
379 | |
|
|
380 | /* casting is fun. */ |
|
|
381 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
382 | free_padlist (aTHX_ padlist); |
|
|
383 | |
|
|
384 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
|
|
385 | |
|
|
386 | return 0; |
|
|
387 | } |
|
|
388 | |
|
|
389 | #define CORO_MAGIC_type_cv 26 |
|
|
390 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
|
|
391 | |
|
|
392 | static MGVTBL coro_cv_vtbl = { |
|
|
393 | 0, 0, 0, 0, |
|
|
394 | coro_cv_free |
|
|
395 | }; |
|
|
396 | |
|
|
397 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
398 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
399 | ? SvMAGIC (sv) \ |
|
|
400 | : mg_find (sv, type)) |
|
|
401 | |
|
|
402 | #define CORO_MAGIC(sv, type) \ |
|
|
403 | (expect_true (SvMAGIC (sv)) \ |
|
|
404 | ? CORO_MAGIC_NN (sv, type) \ |
|
|
405 | : 0) |
|
|
406 | |
|
|
407 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
408 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
409 | |
|
|
410 | INLINE struct coro * |
|
|
411 | SvSTATE_ (pTHX_ SV *coro) |
|
|
412 | { |
|
|
413 | HV *stash; |
|
|
414 | MAGIC *mg; |
|
|
415 | |
|
|
416 | if (SvROK (coro)) |
|
|
417 | coro = SvRV (coro); |
|
|
418 | |
|
|
419 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
420 | croak ("Coro::State object required"); |
|
|
421 | |
|
|
422 | stash = SvSTASH (coro); |
|
|
423 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
424 | { |
|
|
425 | /* very slow, but rare, check */ |
|
|
426 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
427 | croak ("Coro::State object required"); |
|
|
428 | } |
|
|
429 | |
|
|
430 | mg = CORO_MAGIC_state (coro); |
|
|
431 | return (struct coro *)mg->mg_ptr; |
|
|
432 | } |
|
|
433 | |
|
|
434 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
435 | |
|
|
436 | /* faster than SvSTATE, but expects a coroutine hv */ |
|
|
437 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
|
|
438 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
180 | |
439 | |
181 | /* the next two functions merely cache the padlists */ |
440 | /* the next two functions merely cache the padlists */ |
182 | STATIC void |
441 | static void |
183 | get_padlist (CV *cv) |
442 | get_padlist (pTHX_ CV *cv) |
184 | { |
443 | { |
185 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
444 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
445 | AV *av; |
186 | |
446 | |
187 | if (he && AvFILLp ((AV *)*he) >= 0) |
447 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
188 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
448 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
189 | else |
449 | else |
190 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
|
|
191 | } |
|
|
192 | |
|
|
193 | STATIC void |
|
|
194 | put_padlist (CV *cv) |
|
|
195 | { |
|
|
196 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
|
|
197 | |
|
|
198 | if (SvTYPE (*he) != SVt_PVAV) |
|
|
199 | { |
450 | { |
|
|
451 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
452 | /* this is probably cleaner? but also slower! */ |
|
|
453 | /* in practise, it seems to be less stable */ |
|
|
454 | CV *cp = Perl_cv_clone (aTHX_ cv); |
|
|
455 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
456 | CvPADLIST (cp) = 0; |
200 | SvREFCNT_dec (*he); |
457 | SvREFCNT_dec (cp); |
201 | *he = (SV *)newAV (); |
458 | #else |
|
|
459 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
|
|
460 | #endif |
202 | } |
461 | } |
203 | |
|
|
204 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
|
|
205 | } |
462 | } |
206 | |
463 | |
207 | #ifdef MAY_FLUSH |
|
|
208 | STATIC void |
|
|
209 | flush_padlist_cache () |
|
|
210 | { |
|
|
211 | HV *hv = padlist_cache; |
|
|
212 | padlist_cache = newHV (); |
|
|
213 | |
|
|
214 | if (hv_iterinit (hv)) |
|
|
215 | { |
|
|
216 | HE *he; |
|
|
217 | AV *padlist; |
|
|
218 | |
|
|
219 | while (!!(he = hv_iternext (hv))) |
|
|
220 | { |
|
|
221 | AV *av = (AV *)HeVAL(he); |
|
|
222 | |
|
|
223 | /* casting is fun. */ |
|
|
224 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
225 | free_padlist (padlist); |
|
|
226 | } |
|
|
227 | } |
|
|
228 | |
|
|
229 | SvREFCNT_dec (hv); |
|
|
230 | } |
|
|
231 | #endif |
|
|
232 | |
|
|
233 | #define SB do { |
|
|
234 | #define SE } while (0) |
|
|
235 | |
|
|
236 | #define LOAD(state) SB load_state(aTHX_ state); SPAGAIN; SE |
|
|
237 | #define SAVE(state,flags) SB PUTBACK; save_state(aTHX_ state,flags); SE |
|
|
238 | |
|
|
239 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
|
|
240 | |
|
|
241 | static void |
464 | static void |
|
|
465 | put_padlist (pTHX_ CV *cv) |
|
|
466 | { |
|
|
467 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
468 | AV *av; |
|
|
469 | |
|
|
470 | if (expect_false (!mg)) |
|
|
471 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
|
|
472 | |
|
|
473 | av = (AV *)mg->mg_obj; |
|
|
474 | |
|
|
475 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
|
|
476 | av_extend (av, AvMAX (av) + 1); |
|
|
477 | |
|
|
478 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
|
|
479 | } |
|
|
480 | |
|
|
481 | /** load & save, init *******************************************************/ |
|
|
482 | |
|
|
483 | static void |
242 | load_state(pTHX_ Coro__State c) |
484 | load_perl (pTHX_ Coro__State c) |
243 | { |
485 | { |
244 | PL_dowarn = c->dowarn; |
486 | perl_slots *slot = c->slot; |
|
|
487 | c->slot = 0; |
245 | |
488 | |
246 | PL_curstackinfo = c->curstackinfo; |
|
|
247 | PL_curstack = c->curstack; |
|
|
248 | PL_mainstack = c->mainstack; |
489 | PL_mainstack = c->mainstack; |
249 | PL_stack_sp = c->stack_sp; |
|
|
250 | PL_op = c->op; |
|
|
251 | PL_curpad = c->curpad; |
|
|
252 | PL_stack_base = c->stack_base; |
|
|
253 | PL_stack_max = c->stack_max; |
|
|
254 | PL_tmps_stack = c->tmps_stack; |
|
|
255 | PL_tmps_floor = c->tmps_floor; |
|
|
256 | PL_tmps_ix = c->tmps_ix; |
|
|
257 | PL_tmps_max = c->tmps_max; |
|
|
258 | PL_markstack = c->markstack; |
|
|
259 | PL_markstack_ptr = c->markstack_ptr; |
|
|
260 | PL_markstack_max = c->markstack_max; |
|
|
261 | PL_scopestack = c->scopestack; |
|
|
262 | PL_scopestack_ix = c->scopestack_ix; |
|
|
263 | PL_scopestack_max = c->scopestack_max; |
|
|
264 | PL_savestack = c->savestack; |
|
|
265 | PL_savestack_ix = c->savestack_ix; |
|
|
266 | PL_savestack_max = c->savestack_max; |
|
|
267 | PL_retstack = c->retstack; |
|
|
268 | PL_retstack_ix = c->retstack_ix; |
|
|
269 | PL_retstack_max = c->retstack_max; |
|
|
270 | PL_curcop = c->curcop; |
|
|
271 | |
490 | |
272 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
491 | GvSV (PL_defgv) = slot->defsv; |
273 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
492 | GvAV (PL_defgv) = slot->defav; |
274 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
493 | GvSV (PL_errgv) = slot->errsv; |
|
|
494 | GvSV (irsgv) = slot->irsgv; |
|
|
495 | |
|
|
496 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
497 | # include "state.h" |
|
|
498 | #undef VAR |
275 | |
499 | |
276 | { |
500 | { |
277 | dSP; |
501 | dSP; |
|
|
502 | |
278 | CV *cv; |
503 | CV *cv; |
279 | |
504 | |
280 | /* now do the ugly restore mess */ |
505 | /* now do the ugly restore mess */ |
281 | while ((cv = (CV *)POPs)) |
506 | while (expect_true (cv = (CV *)POPs)) |
282 | { |
507 | { |
283 | AV *padlist = (AV *)POPs; |
|
|
284 | |
|
|
285 | if (padlist) |
|
|
286 | { |
|
|
287 | put_padlist (cv); /* mark this padlist as available */ |
508 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
288 | CvPADLIST(cv) = padlist; |
509 | CvDEPTH (cv) = PTR2IV (POPs); |
289 | #ifdef USE_THREADS |
510 | CvPADLIST (cv) = (AV *)POPs; |
290 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
291 | #endif |
|
|
292 | } |
|
|
293 | |
|
|
294 | ++CvDEPTH(cv); |
|
|
295 | } |
511 | } |
296 | |
512 | |
297 | PUTBACK; |
513 | PUTBACK; |
298 | } |
514 | } |
299 | } |
|
|
300 | |
515 | |
|
|
516 | slf_frame = c->slf_frame; |
|
|
517 | CORO_THROW = c->except; |
|
|
518 | } |
|
|
519 | |
301 | static void |
520 | static void |
302 | save_state(pTHX_ Coro__State c, int flags) |
521 | save_perl (pTHX_ Coro__State c) |
303 | { |
522 | { |
|
|
523 | c->except = CORO_THROW; |
|
|
524 | c->slf_frame = slf_frame; |
|
|
525 | |
304 | { |
526 | { |
305 | dSP; |
527 | dSP; |
306 | I32 cxix = cxstack_ix; |
528 | I32 cxix = cxstack_ix; |
|
|
529 | PERL_CONTEXT *ccstk = cxstack; |
307 | PERL_SI *top_si = PL_curstackinfo; |
530 | PERL_SI *top_si = PL_curstackinfo; |
308 | PERL_CONTEXT *ccstk = cxstack; |
|
|
309 | |
531 | |
310 | /* |
532 | /* |
311 | * the worst thing you can imagine happens first - we have to save |
533 | * the worst thing you can imagine happens first - we have to save |
312 | * (and reinitialize) all cv's in the whole callchain :( |
534 | * (and reinitialize) all cv's in the whole callchain :( |
313 | */ |
535 | */ |
314 | |
536 | |
315 | PUSHs (Nullsv); |
537 | XPUSHs (Nullsv); |
316 | /* this loop was inspired by pp_caller */ |
538 | /* this loop was inspired by pp_caller */ |
317 | for (;;) |
539 | for (;;) |
318 | { |
540 | { |
319 | do |
541 | while (expect_true (cxix >= 0)) |
320 | { |
542 | { |
321 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
543 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
322 | |
544 | |
323 | if (CxTYPE(cx) == CXt_SUB) |
545 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
324 | { |
546 | { |
325 | CV *cv = cx->blk_sub.cv; |
547 | CV *cv = cx->blk_sub.cv; |
|
|
548 | |
326 | if (CvDEPTH(cv)) |
549 | if (expect_true (CvDEPTH (cv))) |
327 | { |
550 | { |
328 | #ifdef USE_THREADS |
|
|
329 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
330 | /*CvOWNER(cv) = 0;*/ |
|
|
331 | /*error must unlock this cv etc.. etc...*/ |
|
|
332 | #endif |
|
|
333 | EXTEND (SP, CvDEPTH(cv)*2); |
551 | EXTEND (SP, 3); |
334 | |
|
|
335 | while (--CvDEPTH(cv)) |
|
|
336 | { |
|
|
337 | /* this tells the restore code to increment CvDEPTH */ |
|
|
338 | PUSHs (Nullsv); |
|
|
339 | PUSHs ((SV *)cv); |
|
|
340 | } |
|
|
341 | |
|
|
342 | PUSHs ((SV *)CvPADLIST(cv)); |
552 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
553 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
343 | PUSHs ((SV *)cv); |
554 | PUSHs ((SV *)cv); |
344 | |
555 | |
345 | get_padlist (cv); /* this is a monster */ |
556 | CvDEPTH (cv) = 0; |
|
|
557 | get_padlist (aTHX_ cv); |
346 | } |
558 | } |
347 | } |
559 | } |
348 | else if (CxTYPE(cx) == CXt_FORMAT) |
560 | } |
|
|
561 | |
|
|
562 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
|
|
563 | break; |
|
|
564 | |
|
|
565 | top_si = top_si->si_prev; |
|
|
566 | ccstk = top_si->si_cxstack; |
|
|
567 | cxix = top_si->si_cxix; |
|
|
568 | } |
|
|
569 | |
|
|
570 | PUTBACK; |
|
|
571 | } |
|
|
572 | |
|
|
573 | /* allocate some space on the context stack for our purposes */ |
|
|
574 | /* we manually unroll here, as usually 2 slots is enough */ |
|
|
575 | if (SLOT_COUNT >= 1) CXINC; |
|
|
576 | if (SLOT_COUNT >= 2) CXINC; |
|
|
577 | if (SLOT_COUNT >= 3) CXINC; |
|
|
578 | { |
|
|
579 | int i; |
|
|
580 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
581 | CXINC; |
|
|
582 | } |
|
|
583 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
|
|
584 | |
|
|
585 | c->mainstack = PL_mainstack; |
|
|
586 | |
|
|
587 | { |
|
|
588 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
|
|
589 | |
|
|
590 | slot->defav = GvAV (PL_defgv); |
|
|
591 | slot->defsv = DEFSV; |
|
|
592 | slot->errsv = ERRSV; |
|
|
593 | slot->irsgv = GvSV (irsgv); |
|
|
594 | |
|
|
595 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
596 | # include "state.h" |
|
|
597 | #undef VAR |
|
|
598 | } |
|
|
599 | } |
|
|
600 | |
|
|
601 | /* |
|
|
602 | * allocate various perl stacks. This is almost an exact copy |
|
|
603 | * of perl.c:init_stacks, except that it uses less memory |
|
|
604 | * on the (sometimes correct) assumption that coroutines do |
|
|
605 | * not usually need a lot of stackspace. |
|
|
606 | */ |
|
|
607 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
608 | # define coro_init_stacks(thx) init_stacks () |
|
|
609 | #else |
|
|
610 | static void |
|
|
611 | coro_init_stacks (pTHX) |
|
|
612 | { |
|
|
613 | PL_curstackinfo = new_stackinfo(32, 8); |
|
|
614 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
615 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
616 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
617 | |
|
|
618 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
619 | PL_stack_sp = PL_stack_base; |
|
|
620 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
621 | |
|
|
622 | New(50,PL_tmps_stack,32,SV*); |
|
|
623 | PL_tmps_floor = -1; |
|
|
624 | PL_tmps_ix = -1; |
|
|
625 | PL_tmps_max = 32; |
|
|
626 | |
|
|
627 | New(54,PL_markstack,16,I32); |
|
|
628 | PL_markstack_ptr = PL_markstack; |
|
|
629 | PL_markstack_max = PL_markstack + 16; |
|
|
630 | |
|
|
631 | #ifdef SET_MARK_OFFSET |
|
|
632 | SET_MARK_OFFSET; |
|
|
633 | #endif |
|
|
634 | |
|
|
635 | New(54,PL_scopestack,8,I32); |
|
|
636 | PL_scopestack_ix = 0; |
|
|
637 | PL_scopestack_max = 8; |
|
|
638 | |
|
|
639 | New(54,PL_savestack,24,ANY); |
|
|
640 | PL_savestack_ix = 0; |
|
|
641 | PL_savestack_max = 24; |
|
|
642 | |
|
|
643 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
644 | New(54,PL_retstack,4,OP*); |
|
|
645 | PL_retstack_ix = 0; |
|
|
646 | PL_retstack_max = 4; |
|
|
647 | #endif |
|
|
648 | } |
|
|
649 | #endif |
|
|
650 | |
|
|
651 | /* |
|
|
652 | * destroy the stacks, the callchain etc... |
|
|
653 | */ |
|
|
654 | static void |
|
|
655 | coro_destruct_stacks (pTHX) |
|
|
656 | { |
|
|
657 | while (PL_curstackinfo->si_next) |
|
|
658 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
659 | |
|
|
660 | while (PL_curstackinfo) |
|
|
661 | { |
|
|
662 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
663 | |
|
|
664 | if (!IN_DESTRUCT) |
|
|
665 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
666 | |
|
|
667 | Safefree (PL_curstackinfo->si_cxstack); |
|
|
668 | Safefree (PL_curstackinfo); |
|
|
669 | PL_curstackinfo = p; |
|
|
670 | } |
|
|
671 | |
|
|
672 | Safefree (PL_tmps_stack); |
|
|
673 | Safefree (PL_markstack); |
|
|
674 | Safefree (PL_scopestack); |
|
|
675 | Safefree (PL_savestack); |
|
|
676 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
677 | Safefree (PL_retstack); |
|
|
678 | #endif |
|
|
679 | } |
|
|
680 | |
|
|
681 | static size_t |
|
|
682 | coro_rss (pTHX_ struct coro *coro) |
|
|
683 | { |
|
|
684 | size_t rss = sizeof (*coro); |
|
|
685 | |
|
|
686 | if (coro->mainstack) |
|
|
687 | { |
|
|
688 | perl_slots tmp_slot; |
|
|
689 | perl_slots *slot; |
|
|
690 | |
|
|
691 | if (coro->flags & CF_RUNNING) |
|
|
692 | { |
|
|
693 | slot = &tmp_slot; |
|
|
694 | |
|
|
695 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
696 | # include "state.h" |
|
|
697 | #undef VAR |
|
|
698 | } |
|
|
699 | else |
|
|
700 | slot = coro->slot; |
|
|
701 | |
|
|
702 | if (slot) |
|
|
703 | { |
|
|
704 | rss += sizeof (slot->curstackinfo); |
|
|
705 | rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
|
|
706 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
|
|
707 | rss += slot->tmps_max * sizeof (SV *); |
|
|
708 | rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
|
|
709 | rss += slot->scopestack_max * sizeof (I32); |
|
|
710 | rss += slot->savestack_max * sizeof (ANY); |
|
|
711 | |
|
|
712 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
713 | rss += slot->retstack_max * sizeof (OP *); |
|
|
714 | #endif |
|
|
715 | } |
|
|
716 | } |
|
|
717 | |
|
|
718 | return rss; |
|
|
719 | } |
|
|
720 | |
|
|
721 | /** coroutine stack handling ************************************************/ |
|
|
722 | |
|
|
723 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
724 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
725 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
726 | |
|
|
727 | /* apparently < 5.8.8 */ |
|
|
728 | #ifndef MgPV_nolen_const |
|
|
729 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
730 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
731 | (const char*)(mg)->mg_ptr) |
|
|
732 | #endif |
|
|
733 | |
|
|
734 | /* |
|
|
735 | * This overrides the default magic get method of %SIG elements. |
|
|
736 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
737 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
738 | * readback here. |
|
|
739 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
740 | * not expecting this to actually change the hook. This is a potential problem |
|
|
741 | * when a schedule happens then, but we ignore this. |
|
|
742 | */ |
|
|
743 | static int |
|
|
744 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
745 | { |
|
|
746 | const char *s = MgPV_nolen_const (mg); |
|
|
747 | |
|
|
748 | if (*s == '_') |
|
|
749 | { |
|
|
750 | SV **svp = 0; |
|
|
751 | |
|
|
752 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
753 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
754 | |
|
|
755 | if (svp) |
|
|
756 | { |
|
|
757 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
758 | return 0; |
|
|
759 | } |
|
|
760 | } |
|
|
761 | |
|
|
762 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
763 | } |
|
|
764 | |
|
|
765 | static int |
|
|
766 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
767 | { |
|
|
768 | const char *s = MgPV_nolen_const (mg); |
|
|
769 | |
|
|
770 | if (*s == '_') |
|
|
771 | { |
|
|
772 | SV **svp = 0; |
|
|
773 | |
|
|
774 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
775 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
776 | |
|
|
777 | if (svp) |
|
|
778 | { |
|
|
779 | SV *old = *svp; |
|
|
780 | *svp = 0; |
|
|
781 | SvREFCNT_dec (old); |
|
|
782 | return 0; |
|
|
783 | } |
|
|
784 | } |
|
|
785 | |
|
|
786 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
787 | } |
|
|
788 | |
|
|
789 | static int |
|
|
790 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
791 | { |
|
|
792 | const char *s = MgPV_nolen_const (mg); |
|
|
793 | |
|
|
794 | if (*s == '_') |
|
|
795 | { |
|
|
796 | SV **svp = 0; |
|
|
797 | |
|
|
798 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
799 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
800 | |
|
|
801 | if (svp) |
|
|
802 | { |
|
|
803 | SV *old = *svp; |
|
|
804 | *svp = newSVsv (sv); |
|
|
805 | SvREFCNT_dec (old); |
|
|
806 | return 0; |
|
|
807 | } |
|
|
808 | } |
|
|
809 | |
|
|
810 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
811 | } |
|
|
812 | |
|
|
813 | static void |
|
|
814 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
815 | { |
|
|
816 | /* kind of mega-hacky, but works */ |
|
|
817 | ta->next = ta->prev = (struct coro *)ta; |
|
|
818 | } |
|
|
819 | |
|
|
820 | static int |
|
|
821 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
822 | { |
|
|
823 | return 0; |
|
|
824 | } |
|
|
825 | |
|
|
826 | static UNOP coro_setup_op; |
|
|
827 | |
|
|
828 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
829 | coro_setup (pTHX_ struct coro *coro) |
|
|
830 | { |
|
|
831 | /* |
|
|
832 | * emulate part of the perl startup here. |
|
|
833 | */ |
|
|
834 | coro_init_stacks (aTHX); |
|
|
835 | |
|
|
836 | PL_runops = RUNOPS_DEFAULT; |
|
|
837 | PL_curcop = &PL_compiling; |
|
|
838 | PL_in_eval = EVAL_NULL; |
|
|
839 | PL_comppad = 0; |
|
|
840 | PL_curpm = 0; |
|
|
841 | PL_curpad = 0; |
|
|
842 | PL_localizing = 0; |
|
|
843 | PL_dirty = 0; |
|
|
844 | PL_restartop = 0; |
|
|
845 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
846 | PL_parser = 0; |
|
|
847 | #endif |
|
|
848 | |
|
|
849 | /* recreate the die/warn hooks */ |
|
|
850 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
851 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
852 | |
|
|
853 | GvSV (PL_defgv) = newSV (0); |
|
|
854 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
855 | GvSV (PL_errgv) = newSV (0); |
|
|
856 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
857 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
858 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
859 | |
|
|
860 | { |
|
|
861 | dSP; |
|
|
862 | UNOP myop; |
|
|
863 | |
|
|
864 | Zero (&myop, 1, UNOP); |
|
|
865 | myop.op_next = Nullop; |
|
|
866 | myop.op_flags = OPf_WANT_VOID; |
|
|
867 | |
|
|
868 | PUSHMARK (SP); |
|
|
869 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
|
|
870 | PUTBACK; |
|
|
871 | PL_op = (OP *)&myop; |
|
|
872 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
873 | SPAGAIN; |
|
|
874 | } |
|
|
875 | |
|
|
876 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
877 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
878 | */ |
|
|
879 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
880 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
881 | |
|
|
882 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
883 | coro_setup_op.op_next = PL_op; |
|
|
884 | coro_setup_op.op_type = OP_CUSTOM; |
|
|
885 | coro_setup_op.op_ppaddr = pp_slf; |
|
|
886 | /* no flags required, as an init function won't be called */ |
|
|
887 | |
|
|
888 | PL_op = (OP *)&coro_setup_op; |
|
|
889 | |
|
|
890 | /* copy throw, in case it was set before coro_setup */ |
|
|
891 | CORO_THROW = coro->except; |
|
|
892 | } |
|
|
893 | |
|
|
894 | static void |
|
|
895 | coro_destruct (pTHX_ struct coro *coro) |
|
|
896 | { |
|
|
897 | if (!IN_DESTRUCT) |
|
|
898 | { |
|
|
899 | /* restore all saved variables and stuff */ |
|
|
900 | LEAVE_SCOPE (0); |
|
|
901 | assert (PL_tmps_floor == -1); |
|
|
902 | |
|
|
903 | /* free all temporaries */ |
|
|
904 | FREETMPS; |
|
|
905 | assert (PL_tmps_ix == -1); |
|
|
906 | |
|
|
907 | /* unwind all extra stacks */ |
|
|
908 | POPSTACK_TO (PL_mainstack); |
|
|
909 | |
|
|
910 | /* unwind main stack */ |
|
|
911 | dounwind (-1); |
|
|
912 | } |
|
|
913 | |
|
|
914 | SvREFCNT_dec (GvSV (PL_defgv)); |
|
|
915 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
916 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
917 | SvREFCNT_dec (PL_defoutgv); |
|
|
918 | SvREFCNT_dec (PL_rs); |
|
|
919 | SvREFCNT_dec (GvSV (irsgv)); |
|
|
920 | |
|
|
921 | SvREFCNT_dec (PL_diehook); |
|
|
922 | SvREFCNT_dec (PL_warnhook); |
|
|
923 | |
|
|
924 | SvREFCNT_dec (CORO_THROW); |
|
|
925 | SvREFCNT_dec (coro->saved_deffh); |
|
|
926 | SvREFCNT_dec (coro->rouse_cb); |
|
|
927 | |
|
|
928 | coro_destruct_stacks (aTHX); |
|
|
929 | } |
|
|
930 | |
|
|
931 | INLINE void |
|
|
932 | free_coro_mortal (pTHX) |
|
|
933 | { |
|
|
934 | if (expect_true (coro_mortal)) |
|
|
935 | { |
|
|
936 | SvREFCNT_dec (coro_mortal); |
|
|
937 | coro_mortal = 0; |
|
|
938 | } |
|
|
939 | } |
|
|
940 | |
|
|
941 | static int |
|
|
942 | runops_trace (pTHX) |
|
|
943 | { |
|
|
944 | COP *oldcop = 0; |
|
|
945 | int oldcxix = -2; |
|
|
946 | struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */ |
|
|
947 | coro_cctx *cctx = coro->cctx; |
|
|
948 | |
|
|
949 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
950 | { |
|
|
951 | PERL_ASYNC_CHECK (); |
|
|
952 | |
|
|
953 | if (cctx->flags & CC_TRACE_ALL) |
|
|
954 | { |
|
|
955 | if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
|
|
956 | { |
|
|
957 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
958 | SV **bot, **top; |
|
|
959 | AV *av = newAV (); /* return values */ |
|
|
960 | SV **cb; |
|
|
961 | dSP; |
|
|
962 | |
|
|
963 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
964 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
965 | if (isGV (gv)) |
|
|
966 | gv_efullname3 (fullname, gv, 0); |
|
|
967 | |
|
|
968 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
969 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
970 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
971 | : bot; |
|
|
972 | |
|
|
973 | av_extend (av, top - bot); |
|
|
974 | while (bot < top) |
|
|
975 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
976 | |
|
|
977 | PL_runops = RUNOPS_DEFAULT; |
|
|
978 | ENTER; |
|
|
979 | SAVETMPS; |
|
|
980 | EXTEND (SP, 3); |
|
|
981 | PUSHMARK (SP); |
|
|
982 | PUSHs (&PL_sv_no); |
|
|
983 | PUSHs (fullname); |
|
|
984 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
985 | PUTBACK; |
|
|
986 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
987 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
988 | SPAGAIN; |
|
|
989 | FREETMPS; |
|
|
990 | LEAVE; |
|
|
991 | PL_runops = runops_trace; |
|
|
992 | } |
|
|
993 | |
|
|
994 | if (oldcop != PL_curcop) |
|
|
995 | { |
|
|
996 | oldcop = PL_curcop; |
|
|
997 | |
|
|
998 | if (PL_curcop != &PL_compiling) |
|
|
999 | { |
|
|
1000 | SV **cb; |
|
|
1001 | |
|
|
1002 | if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
|
|
1003 | { |
|
|
1004 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1005 | |
|
|
1006 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
1007 | { |
|
|
1008 | runops_proc_t old_runops = PL_runops; |
|
|
1009 | dSP; |
|
|
1010 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1011 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1012 | |
|
|
1013 | if (isGV (gv)) |
|
|
1014 | gv_efullname3 (fullname, gv, 0); |
|
|
1015 | |
|
|
1016 | PL_runops = RUNOPS_DEFAULT; |
|
|
1017 | ENTER; |
|
|
1018 | SAVETMPS; |
|
|
1019 | EXTEND (SP, 3); |
|
|
1020 | PUSHMARK (SP); |
|
|
1021 | PUSHs (&PL_sv_yes); |
|
|
1022 | PUSHs (fullname); |
|
|
1023 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1024 | PUTBACK; |
|
|
1025 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1026 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1027 | SPAGAIN; |
|
|
1028 | FREETMPS; |
|
|
1029 | LEAVE; |
|
|
1030 | PL_runops = runops_trace; |
|
|
1031 | } |
|
|
1032 | |
|
|
1033 | oldcxix = cxstack_ix; |
|
|
1034 | } |
|
|
1035 | |
|
|
1036 | if (cctx->flags & CC_TRACE_LINE) |
|
|
1037 | { |
|
|
1038 | dSP; |
|
|
1039 | |
|
|
1040 | PL_runops = RUNOPS_DEFAULT; |
|
|
1041 | ENTER; |
|
|
1042 | SAVETMPS; |
|
|
1043 | EXTEND (SP, 3); |
|
|
1044 | PL_runops = RUNOPS_DEFAULT; |
|
|
1045 | PUSHMARK (SP); |
|
|
1046 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1047 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1048 | PUTBACK; |
|
|
1049 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1050 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1051 | SPAGAIN; |
|
|
1052 | FREETMPS; |
|
|
1053 | LEAVE; |
|
|
1054 | PL_runops = runops_trace; |
|
|
1055 | } |
|
|
1056 | } |
|
|
1057 | } |
|
|
1058 | } |
|
|
1059 | } |
|
|
1060 | |
|
|
1061 | TAINT_NOT; |
|
|
1062 | return 0; |
|
|
1063 | } |
|
|
1064 | |
|
|
1065 | static struct coro_cctx *cctx_ssl_cctx; |
|
|
1066 | static struct CoroSLF cctx_ssl_frame; |
|
|
1067 | |
|
|
1068 | static void |
|
|
1069 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1070 | { |
|
|
1071 | ta->prev = (struct coro *)cctx_ssl_cctx; |
|
|
1072 | ta->next = 0; |
|
|
1073 | } |
|
|
1074 | |
|
|
1075 | static int |
|
|
1076 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
|
|
1077 | { |
|
|
1078 | *frame = cctx_ssl_frame; |
|
|
1079 | |
|
|
1080 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
|
|
1084 | static void NOINLINE |
|
|
1085 | cctx_prepare (pTHX_ coro_cctx *cctx) |
|
|
1086 | { |
|
|
1087 | PL_top_env = &PL_start_env; |
|
|
1088 | |
|
|
1089 | if (cctx->flags & CC_TRACE) |
|
|
1090 | PL_runops = runops_trace; |
|
|
1091 | |
|
|
1092 | /* we already must be executing an SLF op, there is no other valid way |
|
|
1093 | * that can lead to creation of a new cctx */ |
|
|
1094 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1095 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
|
|
1096 | |
|
|
1097 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
|
|
1098 | cctx_ssl_cctx = cctx; |
|
|
1099 | cctx_ssl_frame = slf_frame; |
|
|
1100 | |
|
|
1101 | slf_frame.prepare = slf_prepare_set_stacklevel; |
|
|
1102 | slf_frame.check = slf_check_set_stacklevel; |
|
|
1103 | } |
|
|
1104 | |
|
|
1105 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1106 | INLINE void |
|
|
1107 | transfer_tail (pTHX) |
|
|
1108 | { |
|
|
1109 | free_coro_mortal (aTHX); |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | /* |
|
|
1113 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1114 | */ |
|
|
1115 | static void |
|
|
1116 | cctx_run (void *arg) |
|
|
1117 | { |
|
|
1118 | #ifdef USE_ITHREADS |
|
|
1119 | # if CORO_PTHREAD |
|
|
1120 | PERL_SET_CONTEXT (coro_thx); |
|
|
1121 | # endif |
|
|
1122 | #endif |
|
|
1123 | { |
|
|
1124 | dTHX; |
|
|
1125 | |
|
|
1126 | /* normally we would need to skip the entersub here */ |
|
|
1127 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1128 | /* PL_nop = PL_nop->op_next */ |
|
|
1129 | |
|
|
1130 | /* inject a fake subroutine call to cctx_init */ |
|
|
1131 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
|
|
1132 | |
|
|
1133 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1134 | transfer_tail (aTHX); |
|
|
1135 | |
|
|
1136 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1137 | PL_restartop = PL_op; |
|
|
1138 | perl_run (PL_curinterp); |
|
|
1139 | |
|
|
1140 | /* |
|
|
1141 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1142 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1143 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1144 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1145 | * coroutine as Coro has no such concept |
|
|
1146 | */ |
|
|
1147 | PL_top_env = main_top_env; |
|
|
1148 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1149 | } |
|
|
1150 | } |
|
|
1151 | |
|
|
1152 | static coro_cctx * |
|
|
1153 | cctx_new () |
|
|
1154 | { |
|
|
1155 | coro_cctx *cctx; |
|
|
1156 | |
|
|
1157 | ++cctx_count; |
|
|
1158 | New (0, cctx, 1, coro_cctx); |
|
|
1159 | |
|
|
1160 | cctx->gen = cctx_gen; |
|
|
1161 | cctx->flags = 0; |
|
|
1162 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1163 | |
|
|
1164 | return cctx; |
|
|
1165 | } |
|
|
1166 | |
|
|
1167 | /* create a new cctx only suitable as source */ |
|
|
1168 | static coro_cctx * |
|
|
1169 | cctx_new_empty () |
|
|
1170 | { |
|
|
1171 | coro_cctx *cctx = cctx_new (); |
|
|
1172 | |
|
|
1173 | cctx->sptr = 0; |
|
|
1174 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1175 | |
|
|
1176 | return cctx; |
|
|
1177 | } |
|
|
1178 | |
|
|
1179 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1180 | static coro_cctx * |
|
|
1181 | cctx_new_run () |
|
|
1182 | { |
|
|
1183 | coro_cctx *cctx = cctx_new (); |
|
|
1184 | void *stack_start; |
|
|
1185 | size_t stack_size; |
|
|
1186 | |
|
|
1187 | #if HAVE_MMAP |
|
|
1188 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1189 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1190 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1191 | |
|
|
1192 | if (cctx->sptr != (void *)-1) |
|
|
1193 | { |
|
|
1194 | #if CORO_STACKGUARD |
|
|
1195 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1196 | #endif |
|
|
1197 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1198 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1199 | cctx->flags |= CC_MAPPED; |
|
|
1200 | } |
|
|
1201 | else |
|
|
1202 | #endif |
|
|
1203 | { |
|
|
1204 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1205 | New (0, cctx->sptr, cctx_stacksize, long); |
|
|
1206 | |
|
|
1207 | if (!cctx->sptr) |
|
|
1208 | { |
|
|
1209 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1210 | _exit (EXIT_FAILURE); |
|
|
1211 | } |
|
|
1212 | |
|
|
1213 | stack_start = cctx->sptr; |
|
|
1214 | stack_size = cctx->ssize; |
|
|
1215 | } |
|
|
1216 | |
|
|
1217 | #if CORO_USE_VALGRIND |
|
|
1218 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1219 | #endif |
|
|
1220 | |
|
|
1221 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1222 | |
|
|
1223 | return cctx; |
|
|
1224 | } |
|
|
1225 | |
|
|
1226 | static void |
|
|
1227 | cctx_destroy (coro_cctx *cctx) |
|
|
1228 | { |
|
|
1229 | if (!cctx) |
|
|
1230 | return; |
|
|
1231 | |
|
|
1232 | --cctx_count; |
|
|
1233 | coro_destroy (&cctx->cctx); |
|
|
1234 | |
|
|
1235 | /* coro_transfer creates new, empty cctx's */ |
|
|
1236 | if (cctx->sptr) |
|
|
1237 | { |
|
|
1238 | #if CORO_USE_VALGRIND |
|
|
1239 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1240 | #endif |
|
|
1241 | |
|
|
1242 | #if HAVE_MMAP |
|
|
1243 | if (cctx->flags & CC_MAPPED) |
|
|
1244 | munmap (cctx->sptr, cctx->ssize); |
|
|
1245 | else |
|
|
1246 | #endif |
|
|
1247 | Safefree (cctx->sptr); |
|
|
1248 | } |
|
|
1249 | |
|
|
1250 | Safefree (cctx); |
|
|
1251 | } |
|
|
1252 | |
|
|
1253 | /* wether this cctx should be destructed */ |
|
|
1254 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1255 | |
|
|
1256 | static coro_cctx * |
|
|
1257 | cctx_get (pTHX) |
|
|
1258 | { |
|
|
1259 | while (expect_true (cctx_first)) |
|
|
1260 | { |
|
|
1261 | coro_cctx *cctx = cctx_first; |
|
|
1262 | cctx_first = cctx->next; |
|
|
1263 | --cctx_idle; |
|
|
1264 | |
|
|
1265 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1266 | return cctx; |
|
|
1267 | |
|
|
1268 | cctx_destroy (cctx); |
|
|
1269 | } |
|
|
1270 | |
|
|
1271 | return cctx_new_run (); |
|
|
1272 | } |
|
|
1273 | |
|
|
1274 | static void |
|
|
1275 | cctx_put (coro_cctx *cctx) |
|
|
1276 | { |
|
|
1277 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1278 | |
|
|
1279 | /* free another cctx if overlimit */ |
|
|
1280 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1281 | { |
|
|
1282 | coro_cctx *first = cctx_first; |
|
|
1283 | cctx_first = first->next; |
|
|
1284 | --cctx_idle; |
|
|
1285 | |
|
|
1286 | cctx_destroy (first); |
|
|
1287 | } |
|
|
1288 | |
|
|
1289 | ++cctx_idle; |
|
|
1290 | cctx->next = cctx_first; |
|
|
1291 | cctx_first = cctx; |
|
|
1292 | } |
|
|
1293 | |
|
|
1294 | /** coroutine switching *****************************************************/ |
|
|
1295 | |
|
|
1296 | static void |
|
|
1297 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1298 | { |
|
|
1299 | /* TODO: throwing up here is considered harmful */ |
|
|
1300 | |
|
|
1301 | if (expect_true (prev != next)) |
|
|
1302 | { |
|
|
1303 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1304 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,"); |
|
|
1305 | |
|
|
1306 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1307 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
|
|
1308 | |
|
|
1309 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1310 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
|
|
1311 | |
|
|
1312 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1313 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1314 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1315 | #endif |
|
|
1316 | } |
|
|
1317 | } |
|
|
1318 | |
|
|
1319 | /* always use the TRANSFER macro */ |
|
|
1320 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
|
|
1321 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1322 | { |
|
|
1323 | dSTACKLEVEL; |
|
|
1324 | |
|
|
1325 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1326 | if (expect_false (!next)) |
|
|
1327 | { |
|
|
1328 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
1329 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1330 | } |
|
|
1331 | else if (expect_true (prev != next)) |
|
|
1332 | { |
|
|
1333 | coro_cctx *prev__cctx; |
|
|
1334 | |
|
|
1335 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1336 | { |
|
|
1337 | /* create a new empty/source context */ |
|
|
1338 | prev->cctx = cctx_new_empty (); |
|
|
1339 | prev->flags &= ~CF_NEW; |
|
|
1340 | prev->flags |= CF_RUNNING; |
|
|
1341 | } |
|
|
1342 | |
|
|
1343 | prev->flags &= ~CF_RUNNING; |
|
|
1344 | next->flags |= CF_RUNNING; |
|
|
1345 | |
|
|
1346 | /* first get rid of the old state */ |
|
|
1347 | save_perl (aTHX_ prev); |
|
|
1348 | |
|
|
1349 | if (expect_false (next->flags & CF_NEW)) |
|
|
1350 | { |
|
|
1351 | /* need to start coroutine */ |
|
|
1352 | next->flags &= ~CF_NEW; |
|
|
1353 | /* setup coroutine call */ |
|
|
1354 | coro_setup (aTHX_ next); |
|
|
1355 | } |
|
|
1356 | else |
|
|
1357 | load_perl (aTHX_ next); |
|
|
1358 | |
|
|
1359 | prev__cctx = prev->cctx; |
|
|
1360 | |
|
|
1361 | /* possibly untie and reuse the cctx */ |
|
|
1362 | if (expect_true ( |
|
|
1363 | prev__cctx->idle_sp == STACKLEVEL |
|
|
1364 | && !(prev__cctx->flags & CC_TRACE) |
|
|
1365 | && !force_cctx |
|
|
1366 | )) |
|
|
1367 | { |
|
|
1368 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1369 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te)); |
|
|
1370 | |
|
|
1371 | prev->cctx = 0; |
|
|
1372 | |
|
|
1373 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
|
|
1374 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
|
|
1375 | if (expect_false (CCTX_EXPIRED (prev__cctx))) |
|
|
1376 | if (!next->cctx) |
|
|
1377 | next->cctx = cctx_get (aTHX); |
|
|
1378 | |
|
|
1379 | cctx_put (prev__cctx); |
|
|
1380 | } |
|
|
1381 | |
|
|
1382 | ++next->usecount; |
|
|
1383 | |
|
|
1384 | if (expect_true (!next->cctx)) |
|
|
1385 | next->cctx = cctx_get (aTHX); |
|
|
1386 | |
|
|
1387 | if (expect_false (prev__cctx != next->cctx)) |
|
|
1388 | { |
|
|
1389 | prev__cctx->top_env = PL_top_env; |
|
|
1390 | PL_top_env = next->cctx->top_env; |
|
|
1391 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
1392 | } |
|
|
1393 | |
|
|
1394 | transfer_tail (aTHX); |
|
|
1395 | } |
|
|
1396 | } |
|
|
1397 | |
|
|
1398 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1399 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1400 | |
|
|
1401 | /** high level stuff ********************************************************/ |
|
|
1402 | |
|
|
1403 | static int |
|
|
1404 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1405 | { |
|
|
1406 | if (coro->flags & CF_DESTROYED) |
|
|
1407 | return 0; |
|
|
1408 | |
|
|
1409 | if (coro->on_destroy) |
|
|
1410 | coro->on_destroy (aTHX_ coro); |
|
|
1411 | |
|
|
1412 | coro->flags |= CF_DESTROYED; |
|
|
1413 | |
|
|
1414 | if (coro->flags & CF_READY) |
|
|
1415 | { |
|
|
1416 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1417 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1418 | --coro_nready; |
|
|
1419 | } |
|
|
1420 | else |
|
|
1421 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1422 | |
|
|
1423 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
1424 | { |
|
|
1425 | struct coro temp; |
|
|
1426 | |
|
|
1427 | assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING))); |
|
|
1428 | |
|
|
1429 | save_perl (aTHX_ &temp); |
|
|
1430 | load_perl (aTHX_ coro); |
|
|
1431 | |
|
|
1432 | coro_destruct (aTHX_ coro); |
|
|
1433 | |
|
|
1434 | load_perl (aTHX_ &temp); |
|
|
1435 | |
|
|
1436 | coro->slot = 0; |
|
|
1437 | } |
|
|
1438 | |
|
|
1439 | cctx_destroy (coro->cctx); |
|
|
1440 | SvREFCNT_dec (coro->args); |
|
|
1441 | |
|
|
1442 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1443 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1444 | if (coro == coro_first) coro_first = coro->next; |
|
|
1445 | |
|
|
1446 | return 1; |
|
|
1447 | } |
|
|
1448 | |
|
|
1449 | static int |
|
|
1450 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1451 | { |
|
|
1452 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1453 | mg->mg_ptr = 0; |
|
|
1454 | |
|
|
1455 | coro->hv = 0; |
|
|
1456 | |
|
|
1457 | if (--coro->refcnt < 0) |
|
|
1458 | { |
|
|
1459 | coro_state_destroy (aTHX_ coro); |
|
|
1460 | Safefree (coro); |
|
|
1461 | } |
|
|
1462 | |
|
|
1463 | return 0; |
|
|
1464 | } |
|
|
1465 | |
|
|
1466 | static int |
|
|
1467 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1468 | { |
|
|
1469 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1470 | |
|
|
1471 | ++coro->refcnt; |
|
|
1472 | |
|
|
1473 | return 0; |
|
|
1474 | } |
|
|
1475 | |
|
|
1476 | static MGVTBL coro_state_vtbl = { |
|
|
1477 | 0, 0, 0, 0, |
|
|
1478 | coro_state_free, |
|
|
1479 | 0, |
|
|
1480 | #ifdef MGf_DUP |
|
|
1481 | coro_state_dup, |
|
|
1482 | #else |
|
|
1483 | # define MGf_DUP 0 |
|
|
1484 | #endif |
|
|
1485 | }; |
|
|
1486 | |
|
|
1487 | static void |
|
|
1488 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1489 | { |
|
|
1490 | ta->prev = SvSTATE (prev_sv); |
|
|
1491 | ta->next = SvSTATE (next_sv); |
|
|
1492 | TRANSFER_CHECK (*ta); |
|
|
1493 | } |
|
|
1494 | |
|
|
1495 | static void |
|
|
1496 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1497 | { |
|
|
1498 | struct coro_transfer_args ta; |
|
|
1499 | |
|
|
1500 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1501 | TRANSFER (ta, 1); |
|
|
1502 | } |
|
|
1503 | |
|
|
1504 | /*****************************************************************************/ |
|
|
1505 | /* gensub: simple closure generation utility */ |
|
|
1506 | |
|
|
1507 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
1508 | |
|
|
1509 | /* create a closure from XS, returns a code reference */ |
|
|
1510 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
1511 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
1512 | static SV * |
|
|
1513 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
1514 | { |
|
|
1515 | CV *cv = (CV *)newSV (0); |
|
|
1516 | |
|
|
1517 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
1518 | |
|
|
1519 | CvANON_on (cv); |
|
|
1520 | CvISXSUB_on (cv); |
|
|
1521 | CvXSUB (cv) = xsub; |
|
|
1522 | GENSUB_ARG = arg; |
|
|
1523 | |
|
|
1524 | return newRV_noinc ((SV *)cv); |
|
|
1525 | } |
|
|
1526 | |
|
|
1527 | /** Coro ********************************************************************/ |
|
|
1528 | |
|
|
1529 | INLINE void |
|
|
1530 | coro_enq (pTHX_ struct coro *coro) |
|
|
1531 | { |
|
|
1532 | av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
|
|
1533 | } |
|
|
1534 | |
|
|
1535 | INLINE SV * |
|
|
1536 | coro_deq (pTHX) |
|
|
1537 | { |
|
|
1538 | int prio; |
|
|
1539 | |
|
|
1540 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
|
|
1541 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1542 | return av_shift (coro_ready [prio]); |
|
|
1543 | |
|
|
1544 | return 0; |
|
|
1545 | } |
|
|
1546 | |
|
|
1547 | static int |
|
|
1548 | api_ready (pTHX_ SV *coro_sv) |
|
|
1549 | { |
|
|
1550 | struct coro *coro; |
|
|
1551 | SV *sv_hook; |
|
|
1552 | void (*xs_hook)(void); |
|
|
1553 | |
|
|
1554 | if (SvROK (coro_sv)) |
|
|
1555 | coro_sv = SvRV (coro_sv); |
|
|
1556 | |
|
|
1557 | coro = SvSTATE (coro_sv); |
|
|
1558 | |
|
|
1559 | if (coro->flags & CF_READY) |
|
|
1560 | return 0; |
|
|
1561 | |
|
|
1562 | coro->flags |= CF_READY; |
|
|
1563 | |
|
|
1564 | sv_hook = coro_nready ? 0 : coro_readyhook; |
|
|
1565 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
|
|
1566 | |
|
|
1567 | coro_enq (aTHX_ coro); |
|
|
1568 | ++coro_nready; |
|
|
1569 | |
|
|
1570 | if (sv_hook) |
|
|
1571 | { |
|
|
1572 | dSP; |
|
|
1573 | |
|
|
1574 | ENTER; |
|
|
1575 | SAVETMPS; |
|
|
1576 | |
|
|
1577 | PUSHMARK (SP); |
|
|
1578 | PUTBACK; |
|
|
1579 | call_sv (sv_hook, G_VOID | G_DISCARD); |
|
|
1580 | |
|
|
1581 | FREETMPS; |
|
|
1582 | LEAVE; |
|
|
1583 | } |
|
|
1584 | |
|
|
1585 | if (xs_hook) |
|
|
1586 | xs_hook (); |
|
|
1587 | |
|
|
1588 | return 1; |
|
|
1589 | } |
|
|
1590 | |
|
|
1591 | static int |
|
|
1592 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1593 | { |
|
|
1594 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1595 | } |
|
|
1596 | |
|
|
1597 | INLINE void |
|
|
1598 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
|
|
1599 | { |
|
|
1600 | SV *prev_sv, *next_sv; |
|
|
1601 | |
|
|
1602 | for (;;) |
|
|
1603 | { |
|
|
1604 | next_sv = coro_deq (aTHX); |
|
|
1605 | |
|
|
1606 | /* nothing to schedule: call the idle handler */ |
|
|
1607 | if (expect_false (!next_sv)) |
|
|
1608 | { |
|
|
1609 | dSP; |
|
|
1610 | |
|
|
1611 | ENTER; |
|
|
1612 | SAVETMPS; |
|
|
1613 | |
|
|
1614 | PUSHMARK (SP); |
|
|
1615 | PUTBACK; |
|
|
1616 | call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD); |
|
|
1617 | |
|
|
1618 | FREETMPS; |
|
|
1619 | LEAVE; |
|
|
1620 | continue; |
|
|
1621 | } |
|
|
1622 | |
|
|
1623 | ta->next = SvSTATE_hv (next_sv); |
|
|
1624 | |
|
|
1625 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1626 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
|
|
1627 | { |
|
|
1628 | SvREFCNT_dec (next_sv); |
|
|
1629 | /* coro_nready has already been taken care of by destroy */ |
|
|
1630 | continue; |
|
|
1631 | } |
|
|
1632 | |
|
|
1633 | --coro_nready; |
|
|
1634 | break; |
|
|
1635 | } |
|
|
1636 | |
|
|
1637 | /* free this only after the transfer */ |
|
|
1638 | prev_sv = SvRV (coro_current); |
|
|
1639 | ta->prev = SvSTATE_hv (prev_sv); |
|
|
1640 | TRANSFER_CHECK (*ta); |
|
|
1641 | assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY)); |
|
|
1642 | ta->next->flags &= ~CF_READY; |
|
|
1643 | SvRV_set (coro_current, next_sv); |
|
|
1644 | |
|
|
1645 | free_coro_mortal (aTHX); |
|
|
1646 | coro_mortal = prev_sv; |
|
|
1647 | } |
|
|
1648 | |
|
|
1649 | INLINE void |
|
|
1650 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1651 | { |
|
|
1652 | api_ready (aTHX_ coro_current); |
|
|
1653 | prepare_schedule (aTHX_ ta); |
|
|
1654 | } |
|
|
1655 | |
|
|
1656 | INLINE void |
|
|
1657 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1658 | { |
|
|
1659 | SV *prev = SvRV (coro_current); |
|
|
1660 | |
|
|
1661 | if (coro_nready) |
|
|
1662 | { |
|
|
1663 | prepare_schedule (aTHX_ ta); |
|
|
1664 | api_ready (aTHX_ prev); |
|
|
1665 | } |
|
|
1666 | else |
|
|
1667 | prepare_nop (aTHX_ ta); |
|
|
1668 | } |
|
|
1669 | |
|
|
1670 | static void |
|
|
1671 | api_schedule (pTHX) |
|
|
1672 | { |
|
|
1673 | struct coro_transfer_args ta; |
|
|
1674 | |
|
|
1675 | prepare_schedule (aTHX_ &ta); |
|
|
1676 | TRANSFER (ta, 1); |
|
|
1677 | } |
|
|
1678 | |
|
|
1679 | static int |
|
|
1680 | api_cede (pTHX) |
|
|
1681 | { |
|
|
1682 | struct coro_transfer_args ta; |
|
|
1683 | |
|
|
1684 | prepare_cede (aTHX_ &ta); |
|
|
1685 | |
|
|
1686 | if (expect_true (ta.prev != ta.next)) |
|
|
1687 | { |
|
|
1688 | TRANSFER (ta, 1); |
|
|
1689 | return 1; |
|
|
1690 | } |
|
|
1691 | else |
|
|
1692 | return 0; |
|
|
1693 | } |
|
|
1694 | |
|
|
1695 | static int |
|
|
1696 | api_cede_notself (pTHX) |
|
|
1697 | { |
|
|
1698 | if (coro_nready) |
|
|
1699 | { |
|
|
1700 | struct coro_transfer_args ta; |
|
|
1701 | |
|
|
1702 | prepare_cede_notself (aTHX_ &ta); |
|
|
1703 | TRANSFER (ta, 1); |
|
|
1704 | return 1; |
|
|
1705 | } |
|
|
1706 | else |
|
|
1707 | return 0; |
|
|
1708 | } |
|
|
1709 | |
|
|
1710 | static void |
|
|
1711 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1712 | { |
|
|
1713 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1714 | |
|
|
1715 | if (flags & CC_TRACE) |
|
|
1716 | { |
|
|
1717 | if (!coro->cctx) |
|
|
1718 | coro->cctx = cctx_new_run (); |
|
|
1719 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1720 | croak ("cannot enable tracing on coroutine with custom stack,"); |
|
|
1721 | |
|
|
1722 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1723 | } |
|
|
1724 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1725 | { |
|
|
1726 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1727 | |
|
|
1728 | if (coro->flags & CF_RUNNING) |
|
|
1729 | PL_runops = RUNOPS_DEFAULT; |
|
|
1730 | else |
|
|
1731 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1732 | } |
|
|
1733 | } |
|
|
1734 | |
|
|
1735 | /*****************************************************************************/ |
|
|
1736 | /* rouse callback */ |
|
|
1737 | |
|
|
1738 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
1739 | |
|
|
1740 | static void |
|
|
1741 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
1742 | { |
|
|
1743 | dXSARGS; |
|
|
1744 | SV *data = (SV *)GENSUB_ARG; |
|
|
1745 | |
|
|
1746 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1747 | { |
|
|
1748 | /* first call, set args */ |
|
|
1749 | int i; |
|
|
1750 | AV *av = newAV (); |
|
|
1751 | SV *coro = SvRV (data); |
|
|
1752 | |
|
|
1753 | SvRV_set (data, (SV *)av); |
|
|
1754 | api_ready (aTHX_ coro); |
|
|
1755 | SvREFCNT_dec (coro); |
|
|
1756 | |
|
|
1757 | /* better take a full copy of the arguments */ |
|
|
1758 | while (items--) |
|
|
1759 | av_store (av, items, newSVsv (ST (items))); |
|
|
1760 | } |
|
|
1761 | |
|
|
1762 | XSRETURN_EMPTY; |
|
|
1763 | } |
|
|
1764 | |
|
|
1765 | static int |
|
|
1766 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
1767 | { |
|
|
1768 | SV *data = (SV *)frame->data; |
|
|
1769 | |
|
|
1770 | if (CORO_THROW) |
|
|
1771 | return 0; |
|
|
1772 | |
|
|
1773 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1774 | return 1; |
|
|
1775 | |
|
|
1776 | /* now push all results on the stack */ |
|
|
1777 | { |
|
|
1778 | dSP; |
|
|
1779 | AV *av = (AV *)SvRV (data); |
|
|
1780 | int i; |
|
|
1781 | |
|
|
1782 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
1783 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
1784 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
1785 | |
|
|
1786 | /* we have stolen the elements, so ste length to zero and free */ |
|
|
1787 | AvFILLp (av) = -1; |
|
|
1788 | av_undef (av); |
|
|
1789 | |
|
|
1790 | PUTBACK; |
|
|
1791 | } |
|
|
1792 | |
|
|
1793 | return 0; |
|
|
1794 | } |
|
|
1795 | |
|
|
1796 | static void |
|
|
1797 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1798 | { |
|
|
1799 | SV *cb; |
|
|
1800 | |
|
|
1801 | if (items) |
|
|
1802 | cb = arg [0]; |
|
|
1803 | else |
|
|
1804 | { |
|
|
1805 | struct coro *coro = SvSTATE_current; |
|
|
1806 | |
|
|
1807 | if (!coro->rouse_cb) |
|
|
1808 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
1809 | |
|
|
1810 | cb = sv_2mortal (coro->rouse_cb); |
|
|
1811 | coro->rouse_cb = 0; |
|
|
1812 | } |
|
|
1813 | |
|
|
1814 | if (!SvROK (cb) |
|
|
1815 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
1816 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
1817 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
1818 | |
|
|
1819 | { |
|
|
1820 | CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ |
|
|
1821 | SV *data = (SV *)GENSUB_ARG; |
|
|
1822 | |
|
|
1823 | frame->data = (void *)data; |
|
|
1824 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
1825 | frame->check = slf_check_rouse_wait; |
|
|
1826 | } |
|
|
1827 | } |
|
|
1828 | |
|
|
1829 | static SV * |
|
|
1830 | coro_new_rouse_cb (pTHX) |
|
|
1831 | { |
|
|
1832 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1833 | struct coro *coro = SvSTATE_hv (hv); |
|
|
1834 | SV *data = newRV_inc ((SV *)hv); |
|
|
1835 | SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); |
|
|
1836 | |
|
|
1837 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
|
|
1838 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
|
|
1839 | |
|
|
1840 | SvREFCNT_dec (coro->rouse_cb); |
|
|
1841 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
1842 | |
|
|
1843 | return cb; |
|
|
1844 | } |
|
|
1845 | |
|
|
1846 | /*****************************************************************************/ |
|
|
1847 | /* schedule-like-function opcode (SLF) */ |
|
|
1848 | |
|
|
1849 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
1850 | static const CV *slf_cv; |
|
|
1851 | static SV **slf_argv; |
|
|
1852 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
1853 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
1854 | |
|
|
1855 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
1856 | /* recreate the stack frame as perl will on following calls */ |
|
|
1857 | /* since entersub cleared the stack */ |
|
|
1858 | static OP * |
|
|
1859 | pp_restore (pTHX) |
|
|
1860 | { |
|
|
1861 | int i; |
|
|
1862 | SV **SP = PL_stack_base + slf_ax; |
|
|
1863 | |
|
|
1864 | PUSHMARK (SP); |
|
|
1865 | |
|
|
1866 | EXTEND (SP, slf_argc + 1); |
|
|
1867 | |
|
|
1868 | for (i = 0; i < slf_argc; ++i) |
|
|
1869 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
1870 | |
|
|
1871 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
1872 | |
|
|
1873 | RETURNOP (slf_restore.op_first); |
|
|
1874 | } |
|
|
1875 | |
|
|
1876 | static void |
|
|
1877 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
1878 | { |
|
|
1879 | SV **arg = (SV **)slf_frame.data; |
|
|
1880 | |
|
|
1881 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
1882 | } |
|
|
1883 | |
|
|
1884 | static void |
|
|
1885 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1886 | { |
|
|
1887 | if (items != 2) |
|
|
1888 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
1889 | |
|
|
1890 | frame->prepare = slf_prepare_transfer; |
|
|
1891 | frame->check = slf_check_nop; |
|
|
1892 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
1893 | } |
|
|
1894 | |
|
|
1895 | static void |
|
|
1896 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1897 | { |
|
|
1898 | frame->prepare = prepare_schedule; |
|
|
1899 | frame->check = slf_check_nop; |
|
|
1900 | } |
|
|
1901 | |
|
|
1902 | static void |
|
|
1903 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1904 | { |
|
|
1905 | frame->prepare = prepare_cede; |
|
|
1906 | frame->check = slf_check_nop; |
|
|
1907 | } |
|
|
1908 | |
|
|
1909 | static void |
|
|
1910 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1911 | { |
|
|
1912 | frame->prepare = prepare_cede_notself; |
|
|
1913 | frame->check = slf_check_nop; |
|
|
1914 | } |
|
|
1915 | |
|
|
1916 | /* |
|
|
1917 | * these not obviously related functions are all rolled into one |
|
|
1918 | * function to increase chances that they all will call transfer with the same |
|
|
1919 | * stack offset |
|
|
1920 | * SLF stands for "schedule-like-function". |
|
|
1921 | */ |
|
|
1922 | static OP * |
|
|
1923 | pp_slf (pTHX) |
|
|
1924 | { |
|
|
1925 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
1926 | |
|
|
1927 | /* set up the slf frame, unless it has already been set-up */ |
|
|
1928 | /* the latter happens when a new coro has been started */ |
|
|
1929 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
1930 | if (expect_true (!slf_frame.prepare)) |
|
|
1931 | { |
|
|
1932 | /* first iteration */ |
|
|
1933 | dSP; |
|
|
1934 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
1935 | int items = SP - arg; /* args without function object */ |
|
|
1936 | SV *gv = *sp; |
|
|
1937 | |
|
|
1938 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
1939 | /* for us, divert to the real entersub */ |
|
|
1940 | if (SvTYPE (gv) != SVt_PVGV |
|
|
1941 | || !GvCV (gv) |
|
|
1942 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
1943 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1944 | |
|
|
1945 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
1946 | { |
|
|
1947 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
1948 | AV *av = GvAV (PL_defgv); |
|
|
1949 | arg = AvARRAY (av); |
|
|
1950 | items = AvFILLp (av) + 1; |
|
|
1951 | } |
|
|
1952 | |
|
|
1953 | /* now call the init function, which needs to set up slf_frame */ |
|
|
1954 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
1955 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
1956 | |
|
|
1957 | /* pop args */ |
|
|
1958 | SP = PL_stack_base + POPMARK; |
|
|
1959 | |
|
|
1960 | PUTBACK; |
|
|
1961 | } |
|
|
1962 | |
|
|
1963 | /* now that we have a slf_frame, interpret it! */ |
|
|
1964 | /* we use a callback system not to make the code needlessly */ |
|
|
1965 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
1966 | |
|
|
1967 | do |
|
|
1968 | { |
|
|
1969 | struct coro_transfer_args ta; |
|
|
1970 | |
|
|
1971 | slf_frame.prepare (aTHX_ &ta); |
|
|
1972 | TRANSFER (ta, 0); |
|
|
1973 | |
|
|
1974 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
1975 | } |
|
|
1976 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
1977 | |
|
|
1978 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
1979 | |
|
|
1980 | /* exception handling */ |
|
|
1981 | if (expect_false (CORO_THROW)) |
|
|
1982 | { |
|
|
1983 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
1984 | |
|
|
1985 | CORO_THROW = 0; |
|
|
1986 | sv_setsv (ERRSV, exception); |
|
|
1987 | croak (0); |
|
|
1988 | } |
|
|
1989 | |
|
|
1990 | /* return value handling - mostly like entersub */ |
|
|
1991 | /* make sure we put something on the stack in scalar context */ |
|
|
1992 | if (GIMME_V == G_SCALAR) |
|
|
1993 | { |
|
|
1994 | dSP; |
|
|
1995 | SV **bot = PL_stack_base + checkmark; |
|
|
1996 | |
|
|
1997 | if (sp == bot) /* too few, push undef */ |
|
|
1998 | bot [1] = &PL_sv_undef; |
|
|
1999 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
2000 | bot [1] = *sp; |
|
|
2001 | |
|
|
2002 | SP = bot + 1; |
|
|
2003 | |
|
|
2004 | PUTBACK; |
|
|
2005 | } |
|
|
2006 | |
|
|
2007 | return NORMAL; |
|
|
2008 | } |
|
|
2009 | |
|
|
2010 | static void |
|
|
2011 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2012 | { |
|
|
2013 | int i; |
|
|
2014 | SV **arg = PL_stack_base + ax; |
|
|
2015 | int items = PL_stack_sp - arg + 1; |
|
|
2016 | |
|
|
2017 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2018 | |
|
|
2019 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2020 | && PL_op->op_ppaddr != pp_slf) |
|
|
2021 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2022 | |
|
|
2023 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2024 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2025 | slf_cv = cv; |
|
|
2026 | |
|
|
2027 | /* we patch the op, and then re-run the whole call */ |
|
|
2028 | /* we have to put the same argument on the stack for this to work */ |
|
|
2029 | /* and this will be done by pp_restore */ |
|
|
2030 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2031 | slf_restore.op_type = OP_CUSTOM; |
|
|
2032 | slf_restore.op_ppaddr = pp_restore; |
|
|
2033 | slf_restore.op_first = PL_op; |
|
|
2034 | |
|
|
2035 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2036 | |
|
|
2037 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2038 | { |
|
|
2039 | if (items > slf_arga) |
|
|
2040 | { |
|
|
2041 | slf_arga = items; |
|
|
2042 | free (slf_argv); |
|
|
2043 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
2044 | } |
|
|
2045 | |
|
|
2046 | slf_argc = items; |
|
|
2047 | |
|
|
2048 | for (i = 0; i < items; ++i) |
|
|
2049 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2050 | } |
|
|
2051 | else |
|
|
2052 | slf_argc = 0; |
|
|
2053 | |
|
|
2054 | PL_op->op_ppaddr = pp_slf; |
|
|
2055 | PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */ |
|
|
2056 | |
|
|
2057 | PL_op = (OP *)&slf_restore; |
|
|
2058 | } |
|
|
2059 | |
|
|
2060 | /*****************************************************************************/ |
|
|
2061 | /* PerlIO::cede */ |
|
|
2062 | |
|
|
2063 | typedef struct |
|
|
2064 | { |
|
|
2065 | PerlIOBuf base; |
|
|
2066 | NV next, every; |
|
|
2067 | } PerlIOCede; |
|
|
2068 | |
|
|
2069 | static IV |
|
|
2070 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
2071 | { |
|
|
2072 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2073 | |
|
|
2074 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
2075 | self->next = nvtime () + self->every; |
|
|
2076 | |
|
|
2077 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
2078 | } |
|
|
2079 | |
|
|
2080 | static SV * |
|
|
2081 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
2082 | { |
|
|
2083 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2084 | |
|
|
2085 | return newSVnv (self->every); |
|
|
2086 | } |
|
|
2087 | |
|
|
2088 | static IV |
|
|
2089 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
2090 | { |
|
|
2091 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2092 | double now = nvtime (); |
|
|
2093 | |
|
|
2094 | if (now >= self->next) |
|
|
2095 | { |
|
|
2096 | api_cede (aTHX); |
|
|
2097 | self->next = now + self->every; |
|
|
2098 | } |
|
|
2099 | |
|
|
2100 | return PerlIOBuf_flush (aTHX_ f); |
|
|
2101 | } |
|
|
2102 | |
|
|
2103 | static PerlIO_funcs PerlIO_cede = |
|
|
2104 | { |
|
|
2105 | sizeof(PerlIO_funcs), |
|
|
2106 | "cede", |
|
|
2107 | sizeof(PerlIOCede), |
|
|
2108 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
2109 | PerlIOCede_pushed, |
|
|
2110 | PerlIOBuf_popped, |
|
|
2111 | PerlIOBuf_open, |
|
|
2112 | PerlIOBase_binmode, |
|
|
2113 | PerlIOCede_getarg, |
|
|
2114 | PerlIOBase_fileno, |
|
|
2115 | PerlIOBuf_dup, |
|
|
2116 | PerlIOBuf_read, |
|
|
2117 | PerlIOBuf_unread, |
|
|
2118 | PerlIOBuf_write, |
|
|
2119 | PerlIOBuf_seek, |
|
|
2120 | PerlIOBuf_tell, |
|
|
2121 | PerlIOBuf_close, |
|
|
2122 | PerlIOCede_flush, |
|
|
2123 | PerlIOBuf_fill, |
|
|
2124 | PerlIOBase_eof, |
|
|
2125 | PerlIOBase_error, |
|
|
2126 | PerlIOBase_clearerr, |
|
|
2127 | PerlIOBase_setlinebuf, |
|
|
2128 | PerlIOBuf_get_base, |
|
|
2129 | PerlIOBuf_bufsiz, |
|
|
2130 | PerlIOBuf_get_ptr, |
|
|
2131 | PerlIOBuf_get_cnt, |
|
|
2132 | PerlIOBuf_set_ptrcnt, |
|
|
2133 | }; |
|
|
2134 | |
|
|
2135 | /*****************************************************************************/ |
|
|
2136 | /* Coro::Semaphore & Coro::Signal */ |
|
|
2137 | |
|
|
2138 | static SV * |
|
|
2139 | coro_waitarray_new (pTHX_ int count) |
|
|
2140 | { |
|
|
2141 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2142 | AV *av = newAV (); |
|
|
2143 | SV **ary; |
|
|
2144 | |
|
|
2145 | /* unfortunately, building manually saves memory */ |
|
|
2146 | Newx (ary, 2, SV *); |
|
|
2147 | AvALLOC (av) = ary; |
|
|
2148 | /*AvARRAY (av) = ary;*/ |
|
|
2149 | SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */ |
|
|
2150 | AvMAX (av) = 1; |
|
|
2151 | AvFILLp (av) = 0; |
|
|
2152 | ary [0] = newSViv (count); |
|
|
2153 | |
|
|
2154 | return newRV_noinc ((SV *)av); |
|
|
2155 | } |
|
|
2156 | |
|
|
2157 | /* semaphore */ |
|
|
2158 | |
|
|
2159 | static void |
|
|
2160 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2161 | { |
|
|
2162 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2163 | IV count = SvIVX (count_sv); |
|
|
2164 | |
|
|
2165 | count += adjust; |
|
|
2166 | SvIVX (count_sv) = count; |
|
|
2167 | |
|
|
2168 | /* now wake up as many waiters as are expected to lock */ |
|
|
2169 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2170 | { |
|
|
2171 | SV *cb; |
|
|
2172 | |
|
|
2173 | /* swap first two elements so we can shift a waiter */ |
|
|
2174 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2175 | AvARRAY (av)[1] = count_sv; |
|
|
2176 | cb = av_shift (av); |
|
|
2177 | |
|
|
2178 | if (SvOBJECT (cb)) |
|
|
2179 | { |
|
|
2180 | api_ready (aTHX_ cb); |
|
|
2181 | --count; |
|
|
2182 | } |
|
|
2183 | else if (SvTYPE (cb) == SVt_PVCV) |
|
|
2184 | { |
|
|
2185 | dSP; |
|
|
2186 | PUSHMARK (SP); |
|
|
2187 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2188 | PUTBACK; |
|
|
2189 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2190 | } |
|
|
2191 | |
|
|
2192 | SvREFCNT_dec (cb); |
|
|
2193 | } |
|
|
2194 | } |
|
|
2195 | |
|
|
2196 | static void |
|
|
2197 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2198 | { |
|
|
2199 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2200 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2201 | } |
|
|
2202 | |
|
|
2203 | static int |
|
|
2204 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
|
|
2205 | { |
|
|
2206 | AV *av = (AV *)frame->data; |
|
|
2207 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2208 | |
|
|
2209 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
|
|
2210 | if (CORO_THROW) |
|
|
2211 | return 0; |
|
|
2212 | else if (SvIVX (count_sv) > 0) |
|
|
2213 | { |
|
|
2214 | SvSTATE_current->on_destroy = 0; |
|
|
2215 | |
|
|
2216 | if (acquire) |
|
|
2217 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2218 | else |
|
|
2219 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2220 | |
|
|
2221 | return 0; |
|
|
2222 | } |
|
|
2223 | else |
|
|
2224 | { |
|
|
2225 | int i; |
|
|
2226 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2227 | /* waiters list and only add us if we aren't in there already */ |
|
|
2228 | /* this avoids some degenerate memory usage cases */ |
|
|
2229 | |
|
|
2230 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2231 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2232 | return 1; |
|
|
2233 | |
|
|
2234 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2235 | return 1; |
|
|
2236 | } |
|
|
2237 | } |
|
|
2238 | |
|
|
2239 | static int |
|
|
2240 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2241 | { |
|
|
2242 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2243 | } |
|
|
2244 | |
|
|
2245 | static int |
|
|
2246 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2247 | { |
|
|
2248 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2249 | } |
|
|
2250 | |
|
|
2251 | static void |
|
|
2252 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2253 | { |
|
|
2254 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2255 | |
|
|
2256 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2257 | { |
|
|
2258 | frame->data = (void *)av; |
|
|
2259 | frame->prepare = prepare_nop; |
|
|
2260 | } |
|
|
2261 | else |
|
|
2262 | { |
|
|
2263 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2264 | |
|
|
2265 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2266 | frame->prepare = prepare_schedule; |
|
|
2267 | |
|
|
2268 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2269 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2270 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2271 | } |
|
|
2272 | } |
|
|
2273 | |
|
|
2274 | static void |
|
|
2275 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2276 | { |
|
|
2277 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2278 | frame->check = slf_check_semaphore_down; |
|
|
2279 | } |
|
|
2280 | |
|
|
2281 | static void |
|
|
2282 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2283 | { |
|
|
2284 | if (items >= 2) |
|
|
2285 | { |
|
|
2286 | /* callback form */ |
|
|
2287 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2288 | HV *st; |
|
|
2289 | GV *gvp; |
|
|
2290 | CV *cb_cv = sv_2cv (arg [1], &st, &gvp, 0); |
|
|
2291 | |
|
|
2292 | av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); |
|
|
2293 | |
|
|
2294 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2295 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2296 | |
|
|
2297 | frame->prepare = prepare_nop; |
|
|
2298 | frame->check = slf_check_nop; |
|
|
2299 | } |
|
|
2300 | else |
|
|
2301 | { |
|
|
2302 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2303 | frame->check = slf_check_semaphore_wait; |
|
|
2304 | } |
|
|
2305 | } |
|
|
2306 | |
|
|
2307 | /* signal */ |
|
|
2308 | |
|
|
2309 | static void |
|
|
2310 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
2311 | { |
|
|
2312 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2313 | |
|
|
2314 | /* now signal count waiters */ |
|
|
2315 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2316 | { |
|
|
2317 | SV *cb; |
|
|
2318 | |
|
|
2319 | /* swap first two elements so we can shift a waiter */ |
|
|
2320 | cb = AvARRAY (av)[0]; |
|
|
2321 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2322 | AvARRAY (av)[1] = cb; |
|
|
2323 | |
|
|
2324 | cb = av_shift (av); |
|
|
2325 | |
|
|
2326 | api_ready (aTHX_ cb); |
|
|
2327 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
2328 | SvREFCNT_dec (cb); |
|
|
2329 | |
|
|
2330 | --count; |
|
|
2331 | } |
|
|
2332 | } |
|
|
2333 | |
|
|
2334 | static int |
|
|
2335 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
2336 | { |
|
|
2337 | /* if we are about to throw, also stop waiting */ |
|
|
2338 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
2339 | } |
|
|
2340 | |
|
|
2341 | static void |
|
|
2342 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2343 | { |
|
|
2344 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2345 | |
|
|
2346 | if (SvIVX (AvARRAY (av)[0])) |
|
|
2347 | { |
|
|
2348 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2349 | frame->prepare = prepare_nop; |
|
|
2350 | frame->check = slf_check_nop; |
|
|
2351 | } |
|
|
2352 | else |
|
|
2353 | { |
|
|
2354 | SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ |
|
|
2355 | |
|
|
2356 | av_push (av, waiter); |
|
|
2357 | |
|
|
2358 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
2359 | frame->prepare = prepare_schedule; |
|
|
2360 | frame->check = slf_check_signal_wait; |
|
|
2361 | } |
|
|
2362 | } |
|
|
2363 | |
|
|
2364 | /*****************************************************************************/ |
|
|
2365 | /* Coro::AIO */ |
|
|
2366 | |
|
|
2367 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
2368 | |
|
|
2369 | /* helper storage struct */ |
|
|
2370 | struct io_state |
|
|
2371 | { |
|
|
2372 | int errorno; |
|
|
2373 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
2374 | int laststatval; |
|
|
2375 | Stat_t statcache; |
|
|
2376 | }; |
|
|
2377 | |
|
|
2378 | static void |
|
|
2379 | coro_aio_callback (pTHX_ CV *cv) |
|
|
2380 | { |
|
|
2381 | dXSARGS; |
|
|
2382 | AV *state = (AV *)GENSUB_ARG; |
|
|
2383 | SV *coro = av_pop (state); |
|
|
2384 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2385 | |
|
|
2386 | av_extend (state, items); |
|
|
2387 | |
|
|
2388 | sv_upgrade (data_sv, SVt_PV); |
|
|
2389 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2390 | SvPOK_only (data_sv); |
|
|
2391 | |
|
|
2392 | { |
|
|
2393 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2394 | |
|
|
2395 | data->errorno = errno; |
|
|
2396 | data->laststype = PL_laststype; |
|
|
2397 | data->laststatval = PL_laststatval; |
|
|
2398 | data->statcache = PL_statcache; |
|
|
2399 | } |
|
|
2400 | |
|
|
2401 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
2402 | { |
|
|
2403 | int i; |
|
|
2404 | |
|
|
2405 | for (i = 0; i < items; ++i) |
|
|
2406 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
2407 | } |
|
|
2408 | |
|
|
2409 | av_push (state, data_sv); |
|
|
2410 | |
|
|
2411 | api_ready (aTHX_ coro); |
|
|
2412 | SvREFCNT_dec (coro); |
|
|
2413 | SvREFCNT_dec ((AV *)state); |
|
|
2414 | } |
|
|
2415 | |
|
|
2416 | static int |
|
|
2417 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
2418 | { |
|
|
2419 | AV *state = (AV *)frame->data; |
|
|
2420 | |
|
|
2421 | /* if we are about to throw, return early */ |
|
|
2422 | /* this does not cancel the aio request, but at least */ |
|
|
2423 | /* it quickly returns */ |
|
|
2424 | if (CORO_THROW) |
|
|
2425 | return 0; |
|
|
2426 | |
|
|
2427 | /* one element that is an RV? repeat! */ |
|
|
2428 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
2429 | return 1; |
|
|
2430 | |
|
|
2431 | /* restore status */ |
|
|
2432 | { |
|
|
2433 | SV *data_sv = av_pop (state); |
|
|
2434 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2435 | |
|
|
2436 | errno = data->errorno; |
|
|
2437 | PL_laststype = data->laststype; |
|
|
2438 | PL_laststatval = data->laststatval; |
|
|
2439 | PL_statcache = data->statcache; |
|
|
2440 | |
|
|
2441 | SvREFCNT_dec (data_sv); |
|
|
2442 | } |
|
|
2443 | |
|
|
2444 | /* push result values */ |
|
|
2445 | { |
|
|
2446 | dSP; |
|
|
2447 | int i; |
|
|
2448 | |
|
|
2449 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
2450 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
2451 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
2452 | |
|
|
2453 | PUTBACK; |
|
|
2454 | } |
|
|
2455 | |
|
|
2456 | return 0; |
|
|
2457 | } |
|
|
2458 | |
|
|
2459 | static void |
|
|
2460 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2461 | { |
|
|
2462 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
2463 | SV *coro_hv = SvRV (coro_current); |
|
|
2464 | struct coro *coro = SvSTATE_hv (coro_hv); |
|
|
2465 | |
|
|
2466 | /* put our coroutine id on the state arg */ |
|
|
2467 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
|
|
2468 | |
|
|
2469 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
2470 | if (coro->prio) |
|
|
2471 | { |
|
|
2472 | dSP; |
|
|
2473 | |
|
|
2474 | static SV *prio_cv; |
|
|
2475 | static SV *prio_sv; |
|
|
2476 | |
|
|
2477 | if (expect_false (!prio_cv)) |
|
|
2478 | { |
|
|
2479 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
2480 | prio_sv = newSViv (0); |
|
|
2481 | } |
|
|
2482 | |
|
|
2483 | PUSHMARK (SP); |
|
|
2484 | sv_setiv (prio_sv, coro->prio); |
|
|
2485 | XPUSHs (prio_sv); |
|
|
2486 | |
|
|
2487 | PUTBACK; |
|
|
2488 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
2489 | } |
|
|
2490 | |
|
|
2491 | /* now call the original request */ |
|
|
2492 | { |
|
|
2493 | dSP; |
|
|
2494 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
2495 | int i; |
|
|
2496 | |
|
|
2497 | PUSHMARK (SP); |
|
|
2498 | |
|
|
2499 | /* first push all args to the stack */ |
|
|
2500 | EXTEND (SP, items + 1); |
|
|
2501 | |
|
|
2502 | for (i = 0; i < items; ++i) |
|
|
2503 | PUSHs (arg [i]); |
|
|
2504 | |
|
|
2505 | /* now push the callback closure */ |
|
|
2506 | PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
2507 | |
|
|
2508 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
2509 | PUTBACK; |
|
|
2510 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
2511 | } |
|
|
2512 | |
|
|
2513 | /* now that the requets is going, we loop toll we have a result */ |
|
|
2514 | frame->data = (void *)state; |
|
|
2515 | frame->prepare = prepare_schedule; |
|
|
2516 | frame->check = slf_check_aio_req; |
|
|
2517 | } |
|
|
2518 | |
|
|
2519 | static void |
|
|
2520 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
2521 | { |
|
|
2522 | dXSARGS; |
|
|
2523 | |
|
|
2524 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
2525 | |
|
|
2526 | XSRETURN_EMPTY; |
|
|
2527 | } |
|
|
2528 | |
|
|
2529 | /*****************************************************************************/ |
|
|
2530 | |
|
|
2531 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
|
|
2532 | |
|
|
2533 | PROTOTYPES: DISABLE |
|
|
2534 | |
|
|
2535 | BOOT: |
|
|
2536 | { |
|
|
2537 | #ifdef USE_ITHREADS |
|
|
2538 | # if CORO_PTHREAD |
|
|
2539 | coro_thx = PERL_GET_CONTEXT; |
|
|
2540 | # endif |
|
|
2541 | #endif |
|
|
2542 | BOOT_PAGESIZE; |
|
|
2543 | |
|
|
2544 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
2545 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
2546 | |
|
|
2547 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
2548 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
2549 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
2550 | |
|
|
2551 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
2552 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
2553 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
2554 | |
|
|
2555 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
|
|
2556 | |
|
|
2557 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
|
|
2558 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
|
|
2559 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
|
|
2560 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
|
|
2561 | |
|
|
2562 | main_mainstack = PL_mainstack; |
|
|
2563 | main_top_env = PL_top_env; |
|
|
2564 | |
|
|
2565 | while (main_top_env->je_prev) |
|
|
2566 | main_top_env = main_top_env->je_prev; |
|
|
2567 | |
|
|
2568 | { |
|
|
2569 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
2570 | |
|
|
2571 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
2572 | hv_store_ent (PL_custom_op_names, slf, |
|
|
2573 | newSVpv ("coro_slf", 0), 0); |
|
|
2574 | |
|
|
2575 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
2576 | hv_store_ent (PL_custom_op_descs, slf, |
|
|
2577 | newSVpv ("coro schedule like function", 0), 0); |
|
|
2578 | } |
|
|
2579 | |
|
|
2580 | coroapi.ver = CORO_API_VERSION; |
|
|
2581 | coroapi.rev = CORO_API_REVISION; |
|
|
2582 | |
|
|
2583 | coroapi.transfer = api_transfer; |
|
|
2584 | |
|
|
2585 | coroapi.sv_state = SvSTATE_; |
|
|
2586 | coroapi.execute_slf = api_execute_slf; |
|
|
2587 | coroapi.prepare_nop = prepare_nop; |
|
|
2588 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2589 | coroapi.prepare_cede = prepare_cede; |
|
|
2590 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
2591 | |
|
|
2592 | { |
|
|
2593 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
2594 | |
|
|
2595 | if (!svp) croak ("Time::HiRes is required"); |
|
|
2596 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
2597 | |
|
|
2598 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
2599 | } |
|
|
2600 | |
|
|
2601 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
2602 | } |
|
|
2603 | |
|
|
2604 | SV * |
|
|
2605 | new (char *klass, ...) |
|
|
2606 | CODE: |
|
|
2607 | { |
|
|
2608 | struct coro *coro; |
|
|
2609 | MAGIC *mg; |
|
|
2610 | HV *hv; |
|
|
2611 | int i; |
|
|
2612 | |
|
|
2613 | Newz (0, coro, 1, struct coro); |
|
|
2614 | coro->args = newAV (); |
|
|
2615 | coro->flags = CF_NEW; |
|
|
2616 | |
|
|
2617 | if (coro_first) coro_first->prev = coro; |
|
|
2618 | coro->next = coro_first; |
|
|
2619 | coro_first = coro; |
|
|
2620 | |
|
|
2621 | coro->hv = hv = newHV (); |
|
|
2622 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
2623 | mg->mg_flags |= MGf_DUP; |
|
|
2624 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
2625 | |
|
|
2626 | av_extend (coro->args, items - 1); |
|
|
2627 | for (i = 1; i < items; i++) |
|
|
2628 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2629 | } |
|
|
2630 | OUTPUT: |
|
|
2631 | RETVAL |
|
|
2632 | |
|
|
2633 | void |
|
|
2634 | transfer (...) |
|
|
2635 | PROTOTYPE: $$ |
|
|
2636 | CODE: |
|
|
2637 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
|
|
2638 | |
|
|
2639 | bool |
|
|
2640 | _destroy (SV *coro_sv) |
|
|
2641 | CODE: |
|
|
2642 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
|
|
2643 | OUTPUT: |
|
|
2644 | RETVAL |
|
|
2645 | |
|
|
2646 | void |
|
|
2647 | _exit (int code) |
|
|
2648 | PROTOTYPE: $ |
|
|
2649 | CODE: |
|
|
2650 | _exit (code); |
|
|
2651 | |
|
|
2652 | int |
|
|
2653 | cctx_stacksize (int new_stacksize = 0) |
|
|
2654 | PROTOTYPE: ;$ |
|
|
2655 | CODE: |
|
|
2656 | RETVAL = cctx_stacksize; |
|
|
2657 | if (new_stacksize) |
|
|
2658 | { |
|
|
2659 | cctx_stacksize = new_stacksize; |
|
|
2660 | ++cctx_gen; |
|
|
2661 | } |
|
|
2662 | OUTPUT: |
|
|
2663 | RETVAL |
|
|
2664 | |
|
|
2665 | int |
|
|
2666 | cctx_max_idle (int max_idle = 0) |
|
|
2667 | PROTOTYPE: ;$ |
|
|
2668 | CODE: |
|
|
2669 | RETVAL = cctx_max_idle; |
|
|
2670 | if (max_idle > 1) |
|
|
2671 | cctx_max_idle = max_idle; |
|
|
2672 | OUTPUT: |
|
|
2673 | RETVAL |
|
|
2674 | |
|
|
2675 | int |
|
|
2676 | cctx_count () |
|
|
2677 | PROTOTYPE: |
|
|
2678 | CODE: |
|
|
2679 | RETVAL = cctx_count; |
|
|
2680 | OUTPUT: |
|
|
2681 | RETVAL |
|
|
2682 | |
|
|
2683 | int |
|
|
2684 | cctx_idle () |
|
|
2685 | PROTOTYPE: |
|
|
2686 | CODE: |
|
|
2687 | RETVAL = cctx_idle; |
|
|
2688 | OUTPUT: |
|
|
2689 | RETVAL |
|
|
2690 | |
|
|
2691 | void |
|
|
2692 | list () |
|
|
2693 | PROTOTYPE: |
|
|
2694 | PPCODE: |
|
|
2695 | { |
|
|
2696 | struct coro *coro; |
|
|
2697 | for (coro = coro_first; coro; coro = coro->next) |
|
|
2698 | if (coro->hv) |
|
|
2699 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
2700 | } |
|
|
2701 | |
|
|
2702 | void |
|
|
2703 | call (Coro::State coro, SV *coderef) |
|
|
2704 | ALIAS: |
|
|
2705 | eval = 1 |
|
|
2706 | CODE: |
|
|
2707 | { |
|
|
2708 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
2709 | { |
|
|
2710 | struct coro temp; |
|
|
2711 | |
|
|
2712 | if (!(coro->flags & CF_RUNNING)) |
349 | { |
2713 | { |
350 | /* I never used formats, so how should I know how these are implemented? */ |
2714 | PUTBACK; |
351 | /* my bold guess is as a simple, plain sub... */ |
2715 | save_perl (aTHX_ &temp); |
352 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
2716 | load_perl (aTHX_ coro); |
|
|
2717 | } |
|
|
2718 | |
|
|
2719 | { |
|
|
2720 | dSP; |
|
|
2721 | ENTER; |
|
|
2722 | SAVETMPS; |
|
|
2723 | PUTBACK; |
|
|
2724 | PUSHSTACK; |
|
|
2725 | PUSHMARK (SP); |
|
|
2726 | |
|
|
2727 | if (ix) |
|
|
2728 | eval_sv (coderef, 0); |
|
|
2729 | else |
|
|
2730 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
2731 | |
|
|
2732 | POPSTACK; |
|
|
2733 | SPAGAIN; |
|
|
2734 | FREETMPS; |
|
|
2735 | LEAVE; |
|
|
2736 | PUTBACK; |
|
|
2737 | } |
|
|
2738 | |
|
|
2739 | if (!(coro->flags & CF_RUNNING)) |
|
|
2740 | { |
|
|
2741 | save_perl (aTHX_ coro); |
|
|
2742 | load_perl (aTHX_ &temp); |
|
|
2743 | SPAGAIN; |
353 | } |
2744 | } |
354 | } |
2745 | } |
355 | while (cxix >= 0); |
2746 | } |
356 | |
2747 | |
357 | if (top_si->si_type == PERLSI_MAIN) |
2748 | SV * |
358 | break; |
2749 | is_ready (Coro::State coro) |
|
|
2750 | PROTOTYPE: $ |
|
|
2751 | ALIAS: |
|
|
2752 | is_ready = CF_READY |
|
|
2753 | is_running = CF_RUNNING |
|
|
2754 | is_new = CF_NEW |
|
|
2755 | is_destroyed = CF_DESTROYED |
|
|
2756 | CODE: |
|
|
2757 | RETVAL = boolSV (coro->flags & ix); |
|
|
2758 | OUTPUT: |
|
|
2759 | RETVAL |
359 | |
2760 | |
360 | top_si = top_si->si_prev; |
2761 | void |
361 | ccstk = top_si->si_cxstack; |
2762 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
362 | cxix = top_si->si_cxix; |
2763 | PROTOTYPE: $;$ |
|
|
2764 | CODE: |
|
|
2765 | { |
|
|
2766 | struct coro *current = SvSTATE_current; |
|
|
2767 | SV **throwp = self == current ? &CORO_THROW : &self->except; |
|
|
2768 | SvREFCNT_dec (*throwp); |
|
|
2769 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
2770 | } |
|
|
2771 | |
|
|
2772 | void |
|
|
2773 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
2774 | PROTOTYPE: $;$ |
|
|
2775 | C_ARGS: aTHX_ coro, flags |
|
|
2776 | |
|
|
2777 | SV * |
|
|
2778 | has_cctx (Coro::State coro) |
|
|
2779 | PROTOTYPE: $ |
|
|
2780 | CODE: |
|
|
2781 | RETVAL = boolSV (!!coro->cctx); |
|
|
2782 | OUTPUT: |
|
|
2783 | RETVAL |
|
|
2784 | |
|
|
2785 | int |
|
|
2786 | is_traced (Coro::State coro) |
|
|
2787 | PROTOTYPE: $ |
|
|
2788 | CODE: |
|
|
2789 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
2790 | OUTPUT: |
|
|
2791 | RETVAL |
|
|
2792 | |
|
|
2793 | UV |
|
|
2794 | rss (Coro::State coro) |
|
|
2795 | PROTOTYPE: $ |
|
|
2796 | ALIAS: |
|
|
2797 | usecount = 1 |
|
|
2798 | CODE: |
|
|
2799 | switch (ix) |
|
|
2800 | { |
|
|
2801 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
2802 | case 1: RETVAL = coro->usecount; break; |
363 | } |
2803 | } |
|
|
2804 | OUTPUT: |
|
|
2805 | RETVAL |
364 | |
2806 | |
365 | PUTBACK; |
2807 | void |
366 | } |
2808 | force_cctx () |
|
|
2809 | PROTOTYPE: |
|
|
2810 | CODE: |
|
|
2811 | SvSTATE_current->cctx->idle_sp = 0; |
367 | |
2812 | |
368 | c->defav = flags & SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
2813 | void |
369 | c->defsv = flags & SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
2814 | swap_defsv (Coro::State self) |
370 | c->errsv = flags & SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
2815 | PROTOTYPE: $ |
371 | |
2816 | ALIAS: |
372 | c->dowarn = PL_dowarn; |
2817 | swap_defav = 1 |
373 | |
2818 | CODE: |
374 | c->curstackinfo = PL_curstackinfo; |
2819 | if (!self->slot) |
375 | c->curstack = PL_curstack; |
2820 | croak ("cannot swap state with coroutine that has no saved state,"); |
376 | c->mainstack = PL_mainstack; |
2821 | else |
377 | c->stack_sp = PL_stack_sp; |
|
|
378 | c->op = PL_op; |
|
|
379 | c->curpad = PL_curpad; |
|
|
380 | c->stack_base = PL_stack_base; |
|
|
381 | c->stack_max = PL_stack_max; |
|
|
382 | c->tmps_stack = PL_tmps_stack; |
|
|
383 | c->tmps_floor = PL_tmps_floor; |
|
|
384 | c->tmps_ix = PL_tmps_ix; |
|
|
385 | c->tmps_max = PL_tmps_max; |
|
|
386 | c->markstack = PL_markstack; |
|
|
387 | c->markstack_ptr = PL_markstack_ptr; |
|
|
388 | c->markstack_max = PL_markstack_max; |
|
|
389 | c->scopestack = PL_scopestack; |
|
|
390 | c->scopestack_ix = PL_scopestack_ix; |
|
|
391 | c->scopestack_max = PL_scopestack_max; |
|
|
392 | c->savestack = PL_savestack; |
|
|
393 | c->savestack_ix = PL_savestack_ix; |
|
|
394 | c->savestack_max = PL_savestack_max; |
|
|
395 | c->retstack = PL_retstack; |
|
|
396 | c->retstack_ix = PL_retstack_ix; |
|
|
397 | c->retstack_max = PL_retstack_max; |
|
|
398 | c->curcop = PL_curcop; |
|
|
399 | } |
|
|
400 | |
|
|
401 | /* |
|
|
402 | * destroy the stacks, the callchain etc... |
|
|
403 | * still there is a memleak of 128 bytes... |
|
|
404 | */ |
|
|
405 | STATIC void |
|
|
406 | destroy_stacks(pTHX) |
|
|
407 | { |
|
|
408 | /* is this ugly, I ask? */ |
|
|
409 | while (PL_scopestack_ix) |
|
|
410 | LEAVE; |
|
|
411 | |
|
|
412 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
413 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
414 | FREETMPS; |
|
|
415 | |
|
|
416 | while (PL_curstackinfo->si_next) |
|
|
417 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
418 | |
|
|
419 | while (PL_curstackinfo) |
|
|
420 | { |
|
|
421 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
422 | |
|
|
423 | { |
2822 | { |
424 | dSP; |
2823 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
425 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
2824 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
426 | PUTBACK; /* possibly superfluous */ |
2825 | |
|
|
2826 | SV *tmp = *src; *src = *dst; *dst = tmp; |
427 | } |
2827 | } |
428 | |
2828 | |
429 | dounwind(-1); |
|
|
430 | |
2829 | |
431 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
2830 | MODULE = Coro::State PACKAGE = Coro |
432 | Safefree(PL_curstackinfo->si_cxstack); |
|
|
433 | Safefree(PL_curstackinfo); |
|
|
434 | PL_curstackinfo = p; |
|
|
435 | } |
|
|
436 | |
2831 | |
437 | Safefree(PL_tmps_stack); |
2832 | BOOT: |
438 | Safefree(PL_markstack); |
|
|
439 | Safefree(PL_scopestack); |
|
|
440 | Safefree(PL_savestack); |
|
|
441 | Safefree(PL_retstack); |
|
|
442 | } |
|
|
443 | |
|
|
444 | STATIC void |
|
|
445 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
446 | { |
2833 | { |
447 | dSP; |
2834 | int i; |
448 | |
2835 | |
449 | if (prev != next) |
2836 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
450 | { |
2837 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
451 | /* |
2838 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
452 | * this could be done in newprocess which would lead to |
2839 | |
453 | * extremely elegant and fast (just SAVE/LOAD) |
2840 | coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
454 | * code here, but lazy allocation of stacks has also |
2841 | SvREADONLY_on (coro_current); |
455 | * some virtues and the overhead of the if() is nil. |
2842 | |
456 | */ |
2843 | coro_stash = gv_stashpv ("Coro", TRUE); |
457 | if (next->mainstack) |
2844 | |
|
|
2845 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
|
|
2846 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
|
|
2847 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
|
|
2848 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
|
|
2849 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
|
|
2850 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
|
|
2851 | |
|
|
2852 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
|
|
2853 | coro_ready[i] = newAV (); |
|
|
2854 | |
458 | { |
2855 | { |
459 | SAVE (prev, flags); |
2856 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
460 | LOAD (next); |
2857 | |
461 | /* mark this state as in-use */ |
2858 | coroapi.schedule = api_schedule; |
462 | next->mainstack = 0; |
2859 | coroapi.cede = api_cede; |
463 | next->tmps_ix = -2; |
2860 | coroapi.cede_notself = api_cede_notself; |
|
|
2861 | coroapi.ready = api_ready; |
|
|
2862 | coroapi.is_ready = api_is_ready; |
|
|
2863 | coroapi.nready = coro_nready; |
|
|
2864 | coroapi.current = coro_current; |
|
|
2865 | |
|
|
2866 | /*GCoroAPI = &coroapi;*/ |
|
|
2867 | sv_setiv (sv, (IV)&coroapi); |
|
|
2868 | SvREADONLY_on (sv); |
464 | } |
2869 | } |
465 | else if (next->tmps_ix == -2) |
2870 | } |
|
|
2871 | |
|
|
2872 | void |
|
|
2873 | schedule (...) |
|
|
2874 | CODE: |
|
|
2875 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
2876 | |
|
|
2877 | void |
|
|
2878 | cede (...) |
|
|
2879 | CODE: |
|
|
2880 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
2881 | |
|
|
2882 | void |
|
|
2883 | cede_notself (...) |
|
|
2884 | CODE: |
|
|
2885 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
2886 | |
|
|
2887 | void |
|
|
2888 | _set_current (SV *current) |
|
|
2889 | PROTOTYPE: $ |
|
|
2890 | CODE: |
|
|
2891 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
2892 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
2893 | |
|
|
2894 | void |
|
|
2895 | _set_readyhook (SV *hook) |
|
|
2896 | PROTOTYPE: $ |
|
|
2897 | CODE: |
|
|
2898 | SvREFCNT_dec (coro_readyhook); |
|
|
2899 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
|
|
2900 | |
|
|
2901 | int |
|
|
2902 | prio (Coro::State coro, int newprio = 0) |
|
|
2903 | PROTOTYPE: $;$ |
|
|
2904 | ALIAS: |
|
|
2905 | nice = 1 |
|
|
2906 | CODE: |
|
|
2907 | { |
|
|
2908 | RETVAL = coro->prio; |
|
|
2909 | |
|
|
2910 | if (items > 1) |
466 | { |
2911 | { |
467 | croak ("tried to transfer to running coroutine"); |
2912 | if (ix) |
|
|
2913 | newprio = coro->prio - newprio; |
|
|
2914 | |
|
|
2915 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
2916 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
2917 | |
|
|
2918 | coro->prio = newprio; |
468 | } |
2919 | } |
469 | else |
2920 | } |
|
|
2921 | OUTPUT: |
|
|
2922 | RETVAL |
|
|
2923 | |
|
|
2924 | SV * |
|
|
2925 | ready (SV *self) |
|
|
2926 | PROTOTYPE: $ |
|
|
2927 | CODE: |
|
|
2928 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
2929 | OUTPUT: |
|
|
2930 | RETVAL |
|
|
2931 | |
|
|
2932 | int |
|
|
2933 | nready (...) |
|
|
2934 | PROTOTYPE: |
|
|
2935 | CODE: |
|
|
2936 | RETVAL = coro_nready; |
|
|
2937 | OUTPUT: |
|
|
2938 | RETVAL |
|
|
2939 | |
|
|
2940 | # for async_pool speedup |
|
|
2941 | void |
|
|
2942 | _pool_1 (SV *cb) |
|
|
2943 | CODE: |
|
|
2944 | { |
|
|
2945 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2946 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2947 | AV *defav = GvAV (PL_defgv); |
|
|
2948 | SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
|
|
2949 | AV *invoke_av; |
|
|
2950 | int i, len; |
|
|
2951 | |
|
|
2952 | if (!invoke) |
470 | { |
2953 | { |
471 | /* |
2954 | SV *old = PL_diehook; |
472 | * emulate part of the perl startup here. |
2955 | PL_diehook = 0; |
473 | */ |
|
|
474 | UNOP myop; |
|
|
475 | |
|
|
476 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
477 | |
|
|
478 | init_stacks (); /* from perl.c */ |
|
|
479 | SPAGAIN; |
|
|
480 | |
|
|
481 | PL_op = (OP *)&myop; |
|
|
482 | /*PL_curcop = 0;*/ |
|
|
483 | SvREFCNT_dec (GvAV (PL_defgv)); |
2956 | SvREFCNT_dec (old); |
484 | GvAV (PL_defgv) = next->args; |
2957 | croak ("\3async_pool terminate\2\n"); |
485 | |
|
|
486 | Zero(&myop, 1, UNOP); |
|
|
487 | myop.op_next = Nullop; |
|
|
488 | myop.op_flags = OPf_WANT_VOID; |
|
|
489 | |
|
|
490 | PUSHMARK(SP); |
|
|
491 | XPUSHs ((SV*)get_cv(SUB_INIT, TRUE)); |
|
|
492 | /* |
|
|
493 | * the next line is slightly wrong, as PL_op->op_next |
|
|
494 | * is actually being executed so we skip the first op. |
|
|
495 | * that doesn't matter, though, since it is only |
|
|
496 | * pp_nextstate and we never return... |
|
|
497 | * ah yes, and I don't care anyways ;) |
|
|
498 | */ |
|
|
499 | PUTBACK; |
|
|
500 | PL_op = pp_entersub(aTHX); |
|
|
501 | SPAGAIN; |
|
|
502 | |
|
|
503 | ENTER; /* necessary e.g. for dounwind */ |
|
|
504 | } |
2958 | } |
505 | } |
|
|
506 | } |
|
|
507 | |
2959 | |
|
|
2960 | SvREFCNT_dec (coro->saved_deffh); |
|
|
2961 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2962 | |
|
|
2963 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2964 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2965 | |
|
|
2966 | invoke_av = (AV *)SvRV (invoke); |
|
|
2967 | len = av_len (invoke_av); |
|
|
2968 | |
|
|
2969 | sv_setsv (cb, AvARRAY (invoke_av)[0]); |
|
|
2970 | |
|
|
2971 | if (len > 0) |
|
|
2972 | { |
|
|
2973 | av_fill (defav, len - 1); |
|
|
2974 | for (i = 0; i < len; ++i) |
|
|
2975 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
|
|
2976 | } |
|
|
2977 | } |
|
|
2978 | |
|
|
2979 | void |
|
|
2980 | _pool_2 (SV *cb) |
|
|
2981 | CODE: |
|
|
2982 | { |
|
|
2983 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2984 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
2985 | |
|
|
2986 | sv_setsv (cb, &PL_sv_undef); |
|
|
2987 | |
|
|
2988 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2989 | coro->saved_deffh = 0; |
|
|
2990 | |
|
|
2991 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
2992 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2993 | { |
|
|
2994 | SV *old = PL_diehook; |
|
|
2995 | PL_diehook = 0; |
|
|
2996 | SvREFCNT_dec (old); |
|
|
2997 | croak ("\3async_pool terminate\2\n"); |
|
|
2998 | } |
|
|
2999 | |
|
|
3000 | av_clear (GvAV (PL_defgv)); |
|
|
3001 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
3002 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
|
|
3003 | |
|
|
3004 | coro->prio = 0; |
|
|
3005 | |
|
|
3006 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
3007 | api_trace (aTHX_ coro_current, 0); |
|
|
3008 | |
|
|
3009 | av_push (av_async_pool, newSVsv (coro_current)); |
|
|
3010 | } |
|
|
3011 | |
|
|
3012 | SV * |
|
|
3013 | rouse_cb () |
|
|
3014 | PROTOTYPE: |
|
|
3015 | CODE: |
|
|
3016 | RETVAL = coro_new_rouse_cb (aTHX); |
|
|
3017 | OUTPUT: |
|
|
3018 | RETVAL |
|
|
3019 | |
|
|
3020 | void |
|
|
3021 | rouse_wait (...) |
|
|
3022 | PROTOTYPE: ;$ |
|
|
3023 | PPCODE: |
|
|
3024 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
|
|
3025 | |
|
|
3026 | |
508 | MODULE = Coro::State PACKAGE = Coro::State |
3027 | MODULE = Coro::State PACKAGE = PerlIO::cede |
509 | |
|
|
510 | PROTOTYPES: ENABLE |
|
|
511 | |
3028 | |
512 | BOOT: |
3029 | BOOT: |
513 | { /* {} necessary for stoopid perl-5.6.x */ |
3030 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
514 | HV * stash = gv_stashpvn("Coro::State", 10, TRUE); |
|
|
515 | |
3031 | |
516 | newCONSTSUB (stash, "SAVE_DEFAV", newSViv (SAVE_DEFAV)); |
|
|
517 | newCONSTSUB (stash, "SAVE_DEFSV", newSViv (SAVE_DEFSV)); |
|
|
518 | newCONSTSUB (stash, "SAVE_ERRSV", newSViv (SAVE_ERRSV)); |
|
|
519 | |
3032 | |
520 | if (!padlist_cache) |
3033 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
521 | padlist_cache = newHV (); |
|
|
522 | } |
|
|
523 | |
3034 | |
524 | Coro::State |
3035 | SV * |
525 | _newprocess(args) |
3036 | new (SV *klass, SV *count = 0) |
526 | SV * args |
3037 | CODE: |
527 | PROTOTYPE: $ |
3038 | RETVAL = sv_bless ( |
|
|
3039 | coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), |
|
|
3040 | GvSTASH (CvGV (cv)) |
|
|
3041 | ); |
|
|
3042 | OUTPUT: |
|
|
3043 | RETVAL |
|
|
3044 | |
|
|
3045 | # helper for Coro::Channel |
|
|
3046 | SV * |
|
|
3047 | _alloc (int count) |
|
|
3048 | CODE: |
|
|
3049 | RETVAL = coro_waitarray_new (aTHX_ count); |
|
|
3050 | OUTPUT: |
|
|
3051 | RETVAL |
|
|
3052 | |
|
|
3053 | SV * |
|
|
3054 | count (SV *self) |
|
|
3055 | CODE: |
|
|
3056 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
3057 | OUTPUT: |
|
|
3058 | RETVAL |
|
|
3059 | |
|
|
3060 | void |
|
|
3061 | up (SV *self, int adjust = 1) |
|
|
3062 | ALIAS: |
|
|
3063 | adjust = 1 |
528 | CODE: |
3064 | CODE: |
529 | Coro__State coro; |
3065 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
530 | |
3066 | |
531 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
3067 | void |
532 | croak ("Coro::State::_newprocess expects an arrayref"); |
3068 | down (...) |
|
|
3069 | CODE: |
|
|
3070 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
3071 | |
|
|
3072 | void |
|
|
3073 | wait (...) |
|
|
3074 | CODE: |
|
|
3075 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
|
|
3076 | |
|
|
3077 | void |
|
|
3078 | try (SV *self) |
|
|
3079 | PPCODE: |
|
|
3080 | { |
|
|
3081 | AV *av = (AV *)SvRV (self); |
|
|
3082 | SV *count_sv = AvARRAY (av)[0]; |
|
|
3083 | IV count = SvIVX (count_sv); |
|
|
3084 | |
|
|
3085 | if (count > 0) |
533 | |
3086 | { |
534 | New (0, coro, 1, struct coro); |
3087 | --count; |
|
|
3088 | SvIVX (count_sv) = count; |
|
|
3089 | XSRETURN_YES; |
|
|
3090 | } |
|
|
3091 | else |
|
|
3092 | XSRETURN_NO; |
|
|
3093 | } |
535 | |
3094 | |
536 | coro->mainstack = 0; /* actual work is done inside transfer */ |
3095 | void |
537 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
3096 | waiters (SV *self) |
|
|
3097 | PPCODE: |
|
|
3098 | { |
|
|
3099 | AV *av = (AV *)SvRV (self); |
|
|
3100 | int wcount = AvFILLp (av) + 1 - 1; |
538 | |
3101 | |
539 | RETVAL = coro; |
3102 | if (GIMME_V == G_SCALAR) |
|
|
3103 | XPUSHs (sv_2mortal (newSViv (wcount))); |
|
|
3104 | else |
|
|
3105 | { |
|
|
3106 | int i; |
|
|
3107 | EXTEND (SP, wcount); |
|
|
3108 | for (i = 1; i <= wcount; ++i) |
|
|
3109 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
|
|
3110 | } |
|
|
3111 | } |
|
|
3112 | |
|
|
3113 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
3114 | |
|
|
3115 | SV * |
|
|
3116 | new (SV *klass) |
|
|
3117 | CODE: |
|
|
3118 | RETVAL = sv_bless ( |
|
|
3119 | coro_waitarray_new (aTHX_ 0), |
|
|
3120 | GvSTASH (CvGV (cv)) |
|
|
3121 | ); |
540 | OUTPUT: |
3122 | OUTPUT: |
541 | RETVAL |
3123 | RETVAL |
542 | |
3124 | |
543 | void |
3125 | void |
544 | transfer(prev, next, flags = SAVE_DEFAV) |
3126 | wait (...) |
545 | Coro::State_or_hashref prev |
|
|
546 | Coro::State_or_hashref next |
|
|
547 | int flags |
|
|
548 | PROTOTYPE: @ |
|
|
549 | CODE: |
3127 | CODE: |
550 | |
3128 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
551 | transfer (aTHX_ prev, next, flags); |
|
|
552 | |
3129 | |
553 | void |
3130 | void |
554 | DESTROY(coro) |
3131 | broadcast (SV *self) |
555 | Coro::State coro |
|
|
556 | CODE: |
3132 | CODE: |
|
|
3133 | { |
|
|
3134 | AV *av = (AV *)SvRV (self); |
|
|
3135 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
3136 | } |
557 | |
3137 | |
558 | if (coro->mainstack) |
3138 | void |
|
|
3139 | send (SV *self) |
|
|
3140 | CODE: |
|
|
3141 | { |
|
|
3142 | AV *av = (AV *)SvRV (self); |
|
|
3143 | |
|
|
3144 | if (AvFILLp (av)) |
|
|
3145 | coro_signal_wake (aTHX_ av, 1); |
|
|
3146 | else |
|
|
3147 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
3148 | } |
|
|
3149 | |
|
|
3150 | IV |
|
|
3151 | awaited (SV *self) |
|
|
3152 | CODE: |
|
|
3153 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
3154 | OUTPUT: |
|
|
3155 | RETVAL |
|
|
3156 | |
|
|
3157 | |
|
|
3158 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
3159 | |
|
|
3160 | BOOT: |
|
|
3161 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
3162 | |
|
|
3163 | void |
|
|
3164 | _schedule (...) |
|
|
3165 | CODE: |
|
|
3166 | { |
|
|
3167 | static int incede; |
|
|
3168 | |
|
|
3169 | api_cede_notself (aTHX); |
|
|
3170 | |
|
|
3171 | ++incede; |
|
|
3172 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
3173 | ; |
|
|
3174 | |
|
|
3175 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
3176 | if (coro_nready >= incede) |
559 | { |
3177 | { |
560 | struct coro temp; |
3178 | PUSHMARK (SP); |
561 | |
3179 | PUTBACK; |
562 | SAVE(aTHX_ (&temp), SAVE_ALL); |
3180 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
563 | LOAD(aTHX_ coro); |
|
|
564 | |
|
|
565 | destroy_stacks (); |
|
|
566 | |
|
|
567 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
568 | } |
3181 | } |
569 | |
3182 | |
570 | Safefree (coro); |
3183 | --incede; |
|
|
3184 | } |
|
|
3185 | |
|
|
3186 | |
|
|
3187 | MODULE = Coro::State PACKAGE = Coro::AIO |
571 | |
3188 | |
572 | void |
3189 | void |
573 | flush() |
3190 | _register (char *target, char *proto, SV *req) |
574 | CODE: |
3191 | CODE: |
575 | #ifdef MAY_FLUSH |
3192 | { |
576 | flush_padlist_cache (); |
3193 | HV *st; |
577 | #endif |
|
|
578 | |
|
|
579 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
580 | |
|
|
581 | # this is dirty and should be in it's own .xs |
|
|
582 | |
|
|
583 | void |
|
|
584 | result(...) |
|
|
585 | PROTOTYPE: @ |
|
|
586 | CODE: |
|
|
587 | static SV *returnstk; |
|
|
588 | SV *sv; |
3194 | GV *gvp; |
589 | AV *defav = GvAV (PL_defgv); |
3195 | CV *req_cv = sv_2cv (req, &st, &gvp, 0); |
590 | struct coro *prev, *next; |
3196 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
3197 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
3198 | sv_setpv ((SV *)slf_cv, proto); |
|
|
3199 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
3200 | } |
591 | |
3201 | |
592 | if (!returnstk) |
|
|
593 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
594 | |
|
|
595 | /* set up @_ */ |
|
|
596 | av_clear (defav); |
|
|
597 | av_fill (defav, items - 1); |
|
|
598 | while (items--) |
|
|
599 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
600 | |
|
|
601 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
602 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
603 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
604 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
605 | SvREFCNT_dec (sv); |
|
|
606 | transfer(prev, next, 0); |
|
|
607 | |
|
|