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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 | #include "libcoro/coro.c" |
11 | #include "patchlevel.h" |
6 | |
12 | |
7 | #include <signal.h> |
13 | #include <stdio.h> |
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14 | #include <errno.h> |
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15 | #include <assert.h> |
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16 | |
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17 | #ifdef WIN32 |
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18 | # undef setjmp |
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19 | # undef longjmp |
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20 | # undef _exit |
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21 | # define setjmp _setjmp /* deep magic */ |
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22 | #else |
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23 | # include <inttypes.h> /* most portable stdint.h */ |
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24 | #endif |
8 | |
25 | |
9 | #ifdef HAVE_MMAP |
26 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
27 | # include <unistd.h> |
11 | # include <sys/mman.h> |
28 | # include <sys/mman.h> |
12 | # ifndef MAP_ANONYMOUS |
29 | # ifndef MAP_ANONYMOUS |
… | |
… | |
14 | # define MAP_ANONYMOUS MAP_ANON |
31 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
32 | # else |
16 | # undef HAVE_MMAP |
33 | # undef HAVE_MMAP |
17 | # endif |
34 | # endif |
18 | # 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 |
19 | #endif |
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 |
20 | |
48 | |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
49 | #if CORO_USE_VALGRIND |
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50 | # include <valgrind/valgrind.h> |
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51 | #endif |
22 | |
52 | |
23 | #define SUB_INIT "Coro::State::initialize" |
53 | /* the maximum number of idle cctx that will be pooled */ |
24 | #define UCORO_STATE "_coro_state" |
54 | static int cctx_max_idle = 4; |
25 | |
55 | |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
56 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
27 | * to the current C stack pointer. Its property is that it changes with each call |
57 | (PERL_REVISION > (a) \ |
28 | * and should be unique. */ |
58 | || (PERL_REVISION == (a) \ |
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59 | && (PERL_VERSION > (b) \ |
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60 | || (PERL_VERSION == (b) && PERL_SUBVERSION >= (c))))) |
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61 | |
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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 |
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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 | #ifndef CvISXSUB |
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104 | # define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE) |
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105 | #endif |
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106 | #ifndef Newx |
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107 | # define Newx(ptr,nitems,type) New (0,ptr,nitems,type) |
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108 | #endif |
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109 | |
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110 | /* 5.8.7 */ |
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111 | #ifndef SvRV_set |
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112 | # define SvRV_set(s,v) SvRV(s) = (v) |
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113 | #endif |
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114 | |
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115 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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116 | # undef CORO_STACKGUARD |
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117 | #endif |
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118 | |
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119 | #ifndef CORO_STACKGUARD |
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120 | # define CORO_STACKGUARD 0 |
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121 | #endif |
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122 | |
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123 | /* prefer perl internal functions over our own? */ |
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124 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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125 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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126 | #endif |
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127 | |
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128 | /* The next macros try to return the current stack pointer, in an as |
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129 | * portable way as possible. */ |
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130 | #if __GNUC__ >= 4 |
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131 | # define dSTACKLEVEL int stacklevel_dummy |
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132 | # define STACKLEVEL __builtin_frame_address (0) |
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133 | #else |
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134 | # define dSTACKLEVEL volatile void *stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
135 | # define STACKLEVEL ((void *)&stacklevel) |
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136 | #endif |
30 | |
137 | |
31 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
138 | #define IN_DESTRUCT PL_dirty |
32 | |
139 | |
33 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
140 | #if __GNUC__ >= 3 |
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141 | # define attribute(x) __attribute__(x) |
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142 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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143 | # define INLINE static inline |
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144 | #else |
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145 | # define attribute(x) |
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146 | # define expect(expr,value) (expr) |
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147 | # define INLINE static |
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148 | #endif |
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149 | |
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150 | #define expect_false(expr) expect ((expr) != 0, 0) |
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151 | #define expect_true(expr) expect ((expr) != 0, 1) |
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152 | |
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153 | #define NOINLINE attribute ((noinline)) |
34 | |
154 | |
35 | #include "CoroAPI.h" |
155 | #include "CoroAPI.h" |
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156 | #define GCoroAPI (&coroapi) /* very sneaky */ |
36 | |
157 | |
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158 | #ifdef USE_ITHREADS |
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159 | # if CORO_PTHREAD |
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160 | static void *coro_thx; |
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161 | # endif |
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162 | #endif |
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163 | |
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164 | static double (*nvtime)(); /* so why doesn't it take void? */ |
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165 | |
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166 | /* we hijack an hopefully unused CV flag for our purposes */ |
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167 | #define CVf_SLF 0x4000 |
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168 | static OP *pp_slf (pTHX); |
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169 | |
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170 | static U32 cctx_gen; |
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171 | static size_t cctx_stacksize = CORO_STACKSIZE; |
37 | static struct CoroAPI coroapi; |
172 | static struct CoroAPI coroapi; |
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173 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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174 | static JMPENV *main_top_env; |
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175 | static HV *coro_state_stash, *coro_stash; |
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176 | static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */ |
38 | |
177 | |
39 | /* this is actually not only the c stack but also c registers etc... */ |
178 | static AV *av_destroy; /* destruction queue */ |
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179 | static SV *sv_manager; /* the manager coro */ |
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180 | static SV *sv_idle; /* $Coro::idle */ |
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181 | |
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182 | static GV *irsgv; /* $/ */ |
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183 | static GV *stdoutgv; /* *STDOUT */ |
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184 | static SV *rv_diehook; |
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185 | static SV *rv_warnhook; |
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186 | static HV *hv_sig; /* %SIG */ |
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187 | |
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188 | /* async_pool helper stuff */ |
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189 | static SV *sv_pool_rss; |
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190 | static SV *sv_pool_size; |
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191 | static SV *sv_async_pool_idle; /* description string */ |
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192 | static AV *av_async_pool; /* idle pool */ |
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193 | static SV *sv_Coro; /* class string */ |
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194 | static CV *cv_pool_handler; |
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195 | static CV *cv_coro_state_new; |
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196 | |
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197 | /* Coro::AnyEvent */ |
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198 | static SV *sv_activity; |
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199 | |
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200 | static struct coro_cctx *cctx_first; |
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201 | static int cctx_count, cctx_idle; |
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202 | |
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203 | enum { |
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204 | CC_MAPPED = 0x01, |
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205 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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206 | CC_TRACE = 0x04, |
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207 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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208 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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209 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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210 | }; |
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211 | |
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212 | /* this is a structure representing a c-level coroutine */ |
40 | typedef struct { |
213 | typedef struct coro_cctx |
41 | int refcnt; /* pointer reference counter */ |
214 | { |
42 | int usecnt; /* shared by how many coroutines */ |
215 | struct coro_cctx *next; |
43 | int gencnt; /* generation counter */ |
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44 | |
216 | |
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217 | /* the stack */ |
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218 | void *sptr; |
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219 | size_t ssize; |
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220 | |
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221 | /* cpu state */ |
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222 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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223 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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224 | JMPENV *top_env; |
45 | coro_context cctx; |
225 | coro_context cctx; |
46 | |
226 | |
47 | void *sptr; |
227 | U32 gen; |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
228 | #if CORO_USE_VALGRIND |
49 | } coro_stack; |
229 | int valgrind_id; |
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230 | #endif |
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231 | unsigned char flags; |
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232 | } coro_cctx; |
50 | |
233 | |
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234 | coro_cctx *cctx_current; /* the currently running cctx */ |
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235 | |
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236 | /*****************************************************************************/ |
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237 | |
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238 | enum { |
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239 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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240 | CF_READY = 0x0002, /* coroutine is ready */ |
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241 | CF_NEW = 0x0004, /* has never been switched to */ |
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242 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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243 | }; |
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244 | |
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245 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
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246 | typedef struct |
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247 | { |
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248 | SV *defsv; |
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249 | AV *defav; |
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250 | SV *errsv; |
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251 | SV *irsgv; |
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252 | HV *hinthv; |
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253 | #define VAR(name,type) type name; |
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254 | # include "state.h" |
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255 | #undef VAR |
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256 | } perl_slots; |
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257 | |
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258 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
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259 | |
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260 | /* this is a structure representing a perl-level coroutine */ |
51 | struct coro { |
261 | struct coro { |
52 | /* the top-level JMPENV for each coroutine, needed to catch dies. */ |
262 | /* the C coroutine allocated to this perl coroutine, if any */ |
53 | JMPENV start_env; |
263 | coro_cctx *cctx; |
54 | |
264 | |
55 | /* the optional C context */ |
265 | /* state data */ |
56 | coro_stack *stack; |
266 | struct CoroSLF slf_frame; /* saved slf frame */ |
57 | void *cursp; |
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58 | int gencnt; |
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59 | |
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60 | /* optionally saved, might be zero */ |
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61 | AV *defav; |
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62 | SV *defsv; |
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63 | SV *errsv; |
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64 | |
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65 | /* saved global state not related to stacks */ |
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66 | U8 dowarn; |
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67 | I32 in_eval; |
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68 | |
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69 | /* the stacks and related info (callchain etc..) */ |
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70 | PERL_SI *curstackinfo; |
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71 | AV *curstack; |
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72 | AV *mainstack; |
267 | AV *mainstack; |
73 | SV **stack_sp; |
268 | perl_slots *slot; /* basically the saved sp */ |
74 | OP *op; |
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75 | SV **curpad; |
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76 | AV *comppad; |
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77 | SV **stack_base; |
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78 | SV **stack_max; |
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79 | SV **tmps_stack; |
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80 | I32 tmps_floor; |
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81 | I32 tmps_ix; |
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82 | I32 tmps_max; |
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83 | I32 *markstack; |
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84 | I32 *markstack_ptr; |
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85 | I32 *markstack_max; |
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86 | I32 *scopestack; |
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87 | I32 scopestack_ix; |
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88 | I32 scopestack_max; |
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89 | ANY *savestack; |
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90 | I32 savestack_ix; |
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91 | I32 savestack_max; |
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92 | OP **retstack; |
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93 | I32 retstack_ix; |
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94 | I32 retstack_max; |
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95 | COP *curcop; |
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96 | JMPENV *top_env; |
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97 | |
269 | |
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270 | CV *startcv; /* the CV to execute */ |
98 | /* data associated with this coroutine (initial args) */ |
271 | AV *args; /* data associated with this coroutine (initial args) */ |
99 | AV *args; |
272 | int refcnt; /* coroutines are refcounted, yes */ |
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273 | int flags; /* CF_ flags */ |
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274 | HV *hv; /* the perl hash associated with this coro, if any */ |
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275 | void (*on_destroy)(pTHX_ struct coro *coro); |
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276 | |
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277 | /* statistics */ |
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278 | int usecount; /* number of transfers to this coro */ |
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279 | |
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280 | /* coro process data */ |
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281 | int prio; |
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282 | SV *except; /* exception to be thrown */ |
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283 | SV *rouse_cb; |
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284 | |
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285 | /* async_pool */ |
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286 | SV *saved_deffh; |
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287 | SV *invoke_cb; |
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288 | AV *invoke_av; |
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289 | |
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290 | /* linked list */ |
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291 | struct coro *next, *prev; |
100 | }; |
292 | }; |
101 | |
293 | |
102 | typedef struct coro *Coro__State; |
294 | typedef struct coro *Coro__State; |
103 | typedef struct coro *Coro__State_or_hashref; |
295 | typedef struct coro *Coro__State_or_hashref; |
104 | |
296 | |
105 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
297 | /* the following variables are effectively part of the perl context */ |
106 | static HV *coro_state_stash; |
298 | /* and get copied between struct coro and these variables */ |
107 | static SV *ucoro_state_sv; |
299 | /* the mainr easonw e don't support windows process emulation */ |
108 | static U32 ucoro_state_hash; |
300 | static struct CoroSLF slf_frame; /* the current slf frame */ |
109 | static HV *padlist_cache; |
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110 | static SV *coro_mortal; /* will be freed after next transfer */ |
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111 | |
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112 | /* mostly copied from op.c:cv_clone2 */ |
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113 | STATIC AV * |
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114 | clone_padlist (AV *protopadlist) |
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115 | { |
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116 | AV *av; |
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117 | I32 ix; |
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118 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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119 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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120 | SV **pname = AvARRAY (protopad_name); |
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121 | SV **ppad = AvARRAY (protopad); |
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122 | I32 fname = AvFILLp (protopad_name); |
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123 | I32 fpad = AvFILLp (protopad); |
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124 | AV *newpadlist, *newpad_name, *newpad; |
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125 | SV **npad; |
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126 | |
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127 | newpad_name = newAV (); |
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128 | for (ix = fname; ix >= 0; ix--) |
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129 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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130 | |
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131 | newpad = newAV (); |
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132 | av_fill (newpad, AvFILLp (protopad)); |
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133 | npad = AvARRAY (newpad); |
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134 | |
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135 | newpadlist = newAV (); |
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136 | AvREAL_off (newpadlist); |
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137 | av_store (newpadlist, 0, (SV *) newpad_name); |
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138 | av_store (newpadlist, 1, (SV *) newpad); |
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139 | |
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140 | av = newAV (); /* will be @_ */ |
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141 | av_extend (av, 0); |
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142 | av_store (newpad, 0, (SV *) av); |
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143 | AvFLAGS (av) = AVf_REIFY; |
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144 | |
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145 | for (ix = fpad; ix > 0; ix--) |
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146 | { |
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147 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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148 | if (namesv && namesv != &PL_sv_undef) |
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149 | { |
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150 | char *name = SvPVX (namesv); /* XXX */ |
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151 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
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152 | { /* lexical from outside? */ |
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153 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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154 | } |
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155 | else |
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156 | { /* our own lexical */ |
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157 | SV *sv; |
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158 | if (*name == '&') |
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159 | sv = SvREFCNT_inc (ppad[ix]); |
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160 | else if (*name == '@') |
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161 | sv = (SV *) newAV (); |
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162 | else if (*name == '%') |
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163 | sv = (SV *) newHV (); |
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164 | else |
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165 | sv = NEWSV (0, 0); |
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166 | if (!SvPADBUSY (sv)) |
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167 | SvPADMY_on (sv); |
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168 | npad[ix] = sv; |
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169 | } |
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170 | } |
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171 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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172 | { |
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173 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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174 | } |
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175 | else |
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176 | { |
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177 | SV *sv = NEWSV (0, 0); |
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178 | SvPADTMP_on (sv); |
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179 | npad[ix] = sv; |
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180 | } |
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181 | } |
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182 | |
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183 | #if 0 /* return -ENOTUNDERSTOOD */ |
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184 | /* Now that vars are all in place, clone nested closures. */ |
|
|
185 | |
|
|
186 | for (ix = fpad; ix > 0; ix--) { |
|
|
187 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
|
|
188 | if (namesv |
|
|
189 | && namesv != &PL_sv_undef |
|
|
190 | && !(SvFLAGS(namesv) & SVf_FAKE) |
|
|
191 | && *SvPVX(namesv) == '&' |
|
|
192 | && CvCLONE(ppad[ix])) |
|
|
193 | { |
|
|
194 | CV *kid = cv_clone((CV*)ppad[ix]); |
|
|
195 | SvREFCNT_dec(ppad[ix]); |
|
|
196 | CvCLONE_on(kid); |
|
|
197 | SvPADMY_on(kid); |
|
|
198 | npad[ix] = (SV*)kid; |
|
|
199 | } |
|
|
200 | } |
|
|
201 | #endif |
|
|
202 | |
|
|
203 | return newpadlist; |
|
|
204 | } |
|
|
205 | |
|
|
206 | #ifdef MAY_FLUSH |
|
|
207 | STATIC void |
|
|
208 | free_padlist (AV *padlist) |
|
|
209 | { |
|
|
210 | /* may be during global destruction */ |
|
|
211 | if (SvREFCNT(padlist)) |
|
|
212 | { |
|
|
213 | I32 i = AvFILLp(padlist); |
|
|
214 | while (i >= 0) |
|
|
215 | { |
|
|
216 | SV **svp = av_fetch(padlist, i--, FALSE); |
|
|
217 | SV *sv = svp ? *svp : Nullsv; |
|
|
218 | if (sv) |
|
|
219 | SvREFCNT_dec(sv); |
|
|
220 | } |
|
|
221 | |
|
|
222 | SvREFCNT_dec((SV*)padlist); |
|
|
223 | } |
|
|
224 | } |
|
|
225 | #endif |
|
|
226 | |
|
|
227 | /* the next two functions merely cache the padlists */ |
|
|
228 | STATIC void |
|
|
229 | get_padlist (CV *cv) |
|
|
230 | { |
|
|
231 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
|
|
232 | |
|
|
233 | if (he && AvFILLp ((AV *)*he) >= 0) |
|
|
234 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
|
|
235 | else |
|
|
236 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
|
|
237 | } |
|
|
238 | |
|
|
239 | STATIC void |
|
|
240 | put_padlist (CV *cv) |
|
|
241 | { |
|
|
242 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
|
|
243 | |
|
|
244 | if (SvTYPE (*he) != SVt_PVAV) |
|
|
245 | { |
|
|
246 | SvREFCNT_dec (*he); |
|
|
247 | *he = (SV *)newAV (); |
|
|
248 | } |
|
|
249 | |
|
|
250 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
|
|
251 | } |
|
|
252 | |
|
|
253 | #ifdef MAY_FLUSH |
|
|
254 | STATIC void |
|
|
255 | flush_padlist_cache () |
|
|
256 | { |
|
|
257 | HV *hv = padlist_cache; |
|
|
258 | padlist_cache = newHV (); |
|
|
259 | |
|
|
260 | if (hv_iterinit (hv)) |
|
|
261 | { |
|
|
262 | HE *he; |
|
|
263 | AV *padlist; |
|
|
264 | |
|
|
265 | while (!!(he = hv_iternext (hv))) |
|
|
266 | { |
|
|
267 | AV *av = (AV *)HeVAL(he); |
|
|
268 | |
|
|
269 | /* casting is fun. */ |
|
|
270 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
271 | free_padlist (padlist); |
|
|
272 | } |
|
|
273 | } |
|
|
274 | |
|
|
275 | SvREFCNT_dec (hv); |
|
|
276 | } |
|
|
277 | #endif |
|
|
278 | |
|
|
279 | #define SB do { |
|
|
280 | #define SE } while (0) |
|
|
281 | |
|
|
282 | #define LOAD(state) load_state(aTHX_ (state)); |
|
|
283 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
|
|
284 | |
|
|
285 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
|
|
286 | |
|
|
287 | static void |
|
|
288 | load_state(pTHX_ Coro__State c) |
|
|
289 | { |
|
|
290 | PL_dowarn = c->dowarn; |
|
|
291 | PL_in_eval = c->in_eval; |
|
|
292 | |
|
|
293 | PL_curstackinfo = c->curstackinfo; |
|
|
294 | PL_curstack = c->curstack; |
|
|
295 | PL_mainstack = c->mainstack; |
|
|
296 | PL_stack_sp = c->stack_sp; |
|
|
297 | PL_op = c->op; |
|
|
298 | PL_curpad = c->curpad; |
|
|
299 | PL_comppad = c->comppad; |
|
|
300 | PL_stack_base = c->stack_base; |
|
|
301 | PL_stack_max = c->stack_max; |
|
|
302 | PL_tmps_stack = c->tmps_stack; |
|
|
303 | PL_tmps_floor = c->tmps_floor; |
|
|
304 | PL_tmps_ix = c->tmps_ix; |
|
|
305 | PL_tmps_max = c->tmps_max; |
|
|
306 | PL_markstack = c->markstack; |
|
|
307 | PL_markstack_ptr = c->markstack_ptr; |
|
|
308 | PL_markstack_max = c->markstack_max; |
|
|
309 | PL_scopestack = c->scopestack; |
|
|
310 | PL_scopestack_ix = c->scopestack_ix; |
|
|
311 | PL_scopestack_max = c->scopestack_max; |
|
|
312 | PL_savestack = c->savestack; |
|
|
313 | PL_savestack_ix = c->savestack_ix; |
|
|
314 | PL_savestack_max = c->savestack_max; |
|
|
315 | PL_retstack = c->retstack; |
|
|
316 | PL_retstack_ix = c->retstack_ix; |
|
|
317 | PL_retstack_max = c->retstack_max; |
|
|
318 | PL_curcop = c->curcop; |
|
|
319 | PL_top_env = c->top_env; |
|
|
320 | |
|
|
321 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
|
|
322 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
|
|
323 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
|
|
324 | |
|
|
325 | { |
|
|
326 | dSP; |
|
|
327 | CV *cv; |
|
|
328 | |
|
|
329 | /* now do the ugly restore mess */ |
|
|
330 | while ((cv = (CV *)POPs)) |
|
|
331 | { |
|
|
332 | AV *padlist = (AV *)POPs; |
|
|
333 | |
|
|
334 | if (padlist) |
|
|
335 | { |
|
|
336 | put_padlist (cv); /* mark this padlist as available */ |
|
|
337 | CvPADLIST(cv) = padlist; |
|
|
338 | #ifdef USE_THREADS |
|
|
339 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
|
340 | #endif |
|
|
341 | } |
|
|
342 | |
|
|
343 | ++CvDEPTH(cv); |
|
|
344 | } |
|
|
345 | |
|
|
346 | PUTBACK; |
|
|
347 | } |
|
|
348 | } |
|
|
349 | |
|
|
350 | static void |
|
|
351 | save_state(pTHX_ Coro__State c, int flags) |
|
|
352 | { |
|
|
353 | { |
|
|
354 | dSP; |
|
|
355 | I32 cxix = cxstack_ix; |
|
|
356 | PERL_CONTEXT *ccstk = cxstack; |
|
|
357 | PERL_SI *top_si = PL_curstackinfo; |
|
|
358 | |
|
|
359 | /* |
|
|
360 | * the worst thing you can imagine happens first - we have to save |
|
|
361 | * (and reinitialize) all cv's in the whole callchain :( |
|
|
362 | */ |
|
|
363 | |
|
|
364 | PUSHs (Nullsv); |
|
|
365 | /* this loop was inspired by pp_caller */ |
|
|
366 | for (;;) |
|
|
367 | { |
|
|
368 | while (cxix >= 0) |
|
|
369 | { |
|
|
370 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
|
|
371 | |
|
|
372 | if (CxTYPE(cx) == CXt_SUB) |
|
|
373 | { |
|
|
374 | CV *cv = cx->blk_sub.cv; |
|
|
375 | if (CvDEPTH(cv)) |
|
|
376 | { |
|
|
377 | #ifdef USE_THREADS |
|
|
378 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
379 | /*CvOWNER(cv) = 0;*/ |
|
|
380 | /*error must unlock this cv etc.. etc...*/ |
|
|
381 | #endif |
|
|
382 | EXTEND (SP, CvDEPTH(cv)*2); |
|
|
383 | |
|
|
384 | while (--CvDEPTH(cv)) |
|
|
385 | { |
|
|
386 | /* this tells the restore code to increment CvDEPTH */ |
|
|
387 | PUSHs (Nullsv); |
|
|
388 | PUSHs ((SV *)cv); |
|
|
389 | } |
|
|
390 | |
|
|
391 | PUSHs ((SV *)CvPADLIST(cv)); |
|
|
392 | PUSHs ((SV *)cv); |
|
|
393 | |
|
|
394 | get_padlist (cv); /* this is a monster */ |
|
|
395 | } |
|
|
396 | } |
|
|
397 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
398 | { |
|
|
399 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
400 | /* my bold guess is as a simple, plain sub... */ |
|
|
401 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
402 | } |
|
|
403 | } |
|
|
404 | |
|
|
405 | if (top_si->si_type == PERLSI_MAIN) |
|
|
406 | break; |
|
|
407 | |
|
|
408 | top_si = top_si->si_prev; |
|
|
409 | ccstk = top_si->si_cxstack; |
|
|
410 | cxix = top_si->si_cxix; |
|
|
411 | } |
|
|
412 | |
|
|
413 | PUTBACK; |
|
|
414 | } |
|
|
415 | |
|
|
416 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
|
|
417 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
|
|
418 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
419 | |
|
|
420 | c->dowarn = PL_dowarn; |
|
|
421 | c->in_eval = PL_in_eval; |
|
|
422 | |
|
|
423 | c->curstackinfo = PL_curstackinfo; |
|
|
424 | c->curstack = PL_curstack; |
|
|
425 | c->mainstack = PL_mainstack; |
|
|
426 | c->stack_sp = PL_stack_sp; |
|
|
427 | c->op = PL_op; |
|
|
428 | c->curpad = PL_curpad; |
|
|
429 | c->comppad = PL_comppad; |
|
|
430 | c->stack_base = PL_stack_base; |
|
|
431 | c->stack_max = PL_stack_max; |
|
|
432 | c->tmps_stack = PL_tmps_stack; |
|
|
433 | c->tmps_floor = PL_tmps_floor; |
|
|
434 | c->tmps_ix = PL_tmps_ix; |
|
|
435 | c->tmps_max = PL_tmps_max; |
|
|
436 | c->markstack = PL_markstack; |
|
|
437 | c->markstack_ptr = PL_markstack_ptr; |
|
|
438 | c->markstack_max = PL_markstack_max; |
|
|
439 | c->scopestack = PL_scopestack; |
|
|
440 | c->scopestack_ix = PL_scopestack_ix; |
|
|
441 | c->scopestack_max = PL_scopestack_max; |
|
|
442 | c->savestack = PL_savestack; |
|
|
443 | c->savestack_ix = PL_savestack_ix; |
|
|
444 | c->savestack_max = PL_savestack_max; |
|
|
445 | c->retstack = PL_retstack; |
|
|
446 | c->retstack_ix = PL_retstack_ix; |
|
|
447 | c->retstack_max = PL_retstack_max; |
|
|
448 | c->curcop = PL_curcop; |
|
|
449 | c->top_env = PL_top_env; |
|
|
450 | } |
|
|
451 | |
|
|
452 | /* |
|
|
453 | * allocate various perl stacks. This is an exact copy |
|
|
454 | * of perl.c:init_stacks, except that it uses less memory |
|
|
455 | * on the assumption that coroutines do not usually need |
|
|
456 | * a lot of stackspace. |
|
|
457 | */ |
|
|
458 | STATIC void |
|
|
459 | coro_init_stacks (pTHX) |
|
|
460 | { |
|
|
461 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
462 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
463 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
464 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
465 | |
|
|
466 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
467 | PL_stack_sp = PL_stack_base; |
|
|
468 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
469 | |
|
|
470 | New(50,PL_tmps_stack,96,SV*); |
|
|
471 | PL_tmps_floor = -1; |
|
|
472 | PL_tmps_ix = -1; |
|
|
473 | PL_tmps_max = 96; |
|
|
474 | |
|
|
475 | New(54,PL_markstack,16,I32); |
|
|
476 | PL_markstack_ptr = PL_markstack; |
|
|
477 | PL_markstack_max = PL_markstack + 16; |
|
|
478 | |
|
|
479 | SET_MARK_OFFSET; |
|
|
480 | |
|
|
481 | New(54,PL_scopestack,16,I32); |
|
|
482 | PL_scopestack_ix = 0; |
|
|
483 | PL_scopestack_max = 16; |
|
|
484 | |
|
|
485 | New(54,PL_savestack,96,ANY); |
|
|
486 | PL_savestack_ix = 0; |
|
|
487 | PL_savestack_max = 96; |
|
|
488 | |
|
|
489 | New(54,PL_retstack,8,OP*); |
|
|
490 | PL_retstack_ix = 0; |
|
|
491 | PL_retstack_max = 8; |
|
|
492 | } |
|
|
493 | |
|
|
494 | /* |
|
|
495 | * destroy the stacks, the callchain etc... |
|
|
496 | * still there is a memleak of 128 bytes... |
|
|
497 | */ |
|
|
498 | STATIC void |
|
|
499 | destroy_stacks(pTHX) |
|
|
500 | { |
|
|
501 | if (!IN_DESTRUCT) |
|
|
502 | { |
|
|
503 | /* is this ugly, I ask? */ |
|
|
504 | while (PL_scopestack_ix) |
|
|
505 | LEAVE; |
|
|
506 | |
|
|
507 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
508 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
509 | FREETMPS; |
|
|
510 | } |
|
|
511 | |
|
|
512 | while (PL_curstackinfo->si_next) |
|
|
513 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
514 | |
|
|
515 | while (PL_curstackinfo) |
|
|
516 | { |
|
|
517 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
518 | |
|
|
519 | { |
|
|
520 | dSP; |
|
|
521 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
522 | PUTBACK; /* possibly superfluous */ |
|
|
523 | } |
|
|
524 | |
|
|
525 | if (!IN_DESTRUCT) |
|
|
526 | { |
|
|
527 | dounwind(-1); |
|
|
528 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
|
|
529 | } |
|
|
530 | |
|
|
531 | Safefree(PL_curstackinfo->si_cxstack); |
|
|
532 | Safefree(PL_curstackinfo); |
|
|
533 | PL_curstackinfo = p; |
|
|
534 | } |
|
|
535 | |
|
|
536 | Safefree(PL_tmps_stack); |
|
|
537 | Safefree(PL_markstack); |
|
|
538 | Safefree(PL_scopestack); |
|
|
539 | Safefree(PL_savestack); |
|
|
540 | Safefree(PL_retstack); |
|
|
541 | } |
|
|
542 | |
|
|
543 | static void |
|
|
544 | allocate_stack (Coro__State ctx, int alloc) |
|
|
545 | { |
|
|
546 | coro_stack *stack; |
|
|
547 | |
|
|
548 | New (0, stack, 1, coro_stack); |
|
|
549 | |
|
|
550 | stack->refcnt = 1; |
|
|
551 | stack->usecnt = 1; |
|
|
552 | stack->gencnt = ctx->gencnt = 0; |
|
|
553 | if (alloc) |
|
|
554 | { |
|
|
555 | #if HAVE_MMAP |
|
|
556 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
557 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
558 | if (stack->sptr == (void *)-1) |
|
|
559 | #endif |
|
|
560 | { |
|
|
561 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
562 | stack->ssize = -4096 * sizeof (long); |
|
|
563 | New (0, stack->sptr, 4096, long); |
|
|
564 | } |
|
|
565 | } |
|
|
566 | else |
|
|
567 | stack->sptr = 0; |
|
|
568 | |
|
|
569 | ctx->stack = stack; |
|
|
570 | } |
|
|
571 | |
|
|
572 | static void |
|
|
573 | deallocate_stack (Coro__State ctx) |
|
|
574 | { |
|
|
575 | coro_stack *stack = ctx->stack; |
|
|
576 | |
|
|
577 | ctx->stack = 0; |
|
|
578 | |
|
|
579 | if (stack) |
|
|
580 | { |
|
|
581 | if (!--stack->refcnt) |
|
|
582 | { |
|
|
583 | #ifdef HAVE_MMAP |
|
|
584 | if (stack->ssize > 0 && stack->sptr) |
|
|
585 | munmap (stack->sptr, stack->ssize); |
|
|
586 | else |
|
|
587 | #else |
|
|
588 | Safefree (stack->sptr); |
|
|
589 | #endif |
|
|
590 | Safefree (stack); |
|
|
591 | } |
|
|
592 | else if (ctx->gencnt == stack->gencnt) |
|
|
593 | --stack->usecnt; |
|
|
594 | } |
|
|
595 | } |
|
|
596 | |
|
|
597 | static void |
|
|
598 | setup_coro (void *arg) |
|
|
599 | { |
|
|
600 | /* |
|
|
601 | * emulate part of the perl startup here. |
|
|
602 | */ |
|
|
603 | dSP; |
|
|
604 | Coro__State ctx = (Coro__State)arg; |
|
|
605 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
606 | |
|
|
607 | coro_init_stacks (aTHX); |
|
|
608 | /*PL_curcop = 0;*/ |
|
|
609 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
610 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
611 | GvAV (PL_defgv) = ctx->args; |
|
|
612 | |
|
|
613 | SPAGAIN; |
|
|
614 | |
|
|
615 | if (ctx->stack) |
|
|
616 | { |
|
|
617 | ctx->cursp = 0; |
|
|
618 | |
|
|
619 | PUSHMARK(SP); |
|
|
620 | PUTBACK; |
|
|
621 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
622 | |
|
|
623 | if (SvTRUE (ERRSV)) |
|
|
624 | croak (NULL); |
|
|
625 | else |
|
|
626 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
627 | } |
|
|
628 | else |
|
|
629 | { |
|
|
630 | UNOP myop; |
|
|
631 | |
|
|
632 | PL_op = (OP *)&myop; |
|
|
633 | |
|
|
634 | Zero(&myop, 1, UNOP); |
|
|
635 | myop.op_next = Nullop; |
|
|
636 | myop.op_flags = OPf_WANT_VOID; |
|
|
637 | |
|
|
638 | PUSHMARK(SP); |
|
|
639 | XPUSHs (sub_init); |
|
|
640 | /* |
|
|
641 | * the next line is slightly wrong, as PL_op->op_next |
|
|
642 | * is actually being executed so we skip the first op. |
|
|
643 | * that doesn't matter, though, since it is only |
|
|
644 | * pp_nextstate and we never return... |
|
|
645 | * ah yes, and I don't care anyways ;) |
|
|
646 | */ |
|
|
647 | PUTBACK; |
|
|
648 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
649 | SPAGAIN; |
|
|
650 | |
|
|
651 | ENTER; /* necessary e.g. for dounwind */ |
|
|
652 | } |
|
|
653 | } |
|
|
654 | |
|
|
655 | static void |
|
|
656 | continue_coro (void *arg) |
|
|
657 | { |
|
|
658 | /* |
|
|
659 | * this is a _very_ stripped down perl interpreter ;) |
|
|
660 | */ |
|
|
661 | Coro__State ctx = (Coro__State)arg; |
|
|
662 | JMPENV coro_start_env; |
|
|
663 | |
|
|
664 | PL_top_env = &ctx->start_env; |
|
|
665 | |
|
|
666 | ctx->cursp = 0; |
|
|
667 | PL_op = PL_op->op_next; |
|
|
668 | CALLRUNOPS(aTHX); |
|
|
669 | |
|
|
670 | abort (); |
|
|
671 | } |
|
|
672 | |
|
|
673 | STATIC void |
|
|
674 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
675 | { |
|
|
676 | dSTACKLEVEL; |
|
|
677 | static struct coro *xnext; |
|
|
678 | |
|
|
679 | if (prev != next) |
|
|
680 | { |
|
|
681 | xnext = next; |
|
|
682 | |
|
|
683 | if (next->mainstack) |
|
|
684 | { |
|
|
685 | SAVE (prev, flags); |
|
|
686 | LOAD (next); |
|
|
687 | |
|
|
688 | /* mark this state as in-use */ |
|
|
689 | next->mainstack = 0; |
|
|
690 | next->tmps_ix = -2; |
|
|
691 | |
|
|
692 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
693 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
694 | { |
|
|
695 | if (!prev->stack) |
|
|
696 | allocate_stack (prev, 0); |
|
|
697 | else if (prev->cursp != stacklevel |
|
|
698 | && prev->stack->usecnt > 1) |
|
|
699 | { |
|
|
700 | prev->gencnt = ++prev->stack->gencnt; |
|
|
701 | prev->stack->usecnt = 1; |
|
|
702 | } |
|
|
703 | |
|
|
704 | /* has our stack been invalidated? */ |
|
|
705 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
706 | { |
|
|
707 | deallocate_stack (next); |
|
|
708 | allocate_stack (next, 1); |
|
|
709 | coro_create (&(next->stack->cctx), |
|
|
710 | continue_coro, (void *)next, |
|
|
711 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
712 | } |
|
|
713 | |
|
|
714 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
715 | /* don't add any code here */ |
|
|
716 | } |
|
|
717 | |
|
|
718 | } |
|
|
719 | else if (next->tmps_ix == -2) |
|
|
720 | croak ("tried to transfer to running coroutine"); |
|
|
721 | else |
|
|
722 | { |
|
|
723 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
724 | |
|
|
725 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
726 | { |
|
|
727 | if (!prev->stack) |
|
|
728 | allocate_stack (prev, 0); |
|
|
729 | |
|
|
730 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
731 | { |
|
|
732 | PL_top_env = &next->start_env; |
|
|
733 | |
|
|
734 | setup_coro (next); |
|
|
735 | |
|
|
736 | prev->stack->refcnt++; |
|
|
737 | prev->stack->usecnt++; |
|
|
738 | next->stack = prev->stack; |
|
|
739 | next->gencnt = prev->gencnt; |
|
|
740 | } |
|
|
741 | else |
|
|
742 | { |
|
|
743 | allocate_stack (next, 1); |
|
|
744 | coro_create (&(next->stack->cctx), |
|
|
745 | setup_coro, (void *)next, |
|
|
746 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
747 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
748 | /* don't add any code here */ |
|
|
749 | } |
|
|
750 | } |
|
|
751 | else |
|
|
752 | setup_coro (next); |
|
|
753 | } |
|
|
754 | |
|
|
755 | /* |
|
|
756 | * xnext is now either prev or next, depending on wether |
|
|
757 | * we switched the c stack or not. that's why I use a global |
|
|
758 | * variable, that should become thread-specific at one point. |
|
|
759 | */ |
|
|
760 | xnext->cursp = stacklevel; |
|
|
761 | } |
|
|
762 | |
|
|
763 | if (coro_mortal) |
|
|
764 | { |
|
|
765 | SvREFCNT_dec (coro_mortal); |
|
|
766 | coro_mortal = 0; |
|
|
767 | } |
|
|
768 | } |
|
|
769 | |
|
|
770 | #define SV_CORO(sv,func) \ |
|
|
771 | do { \ |
|
|
772 | if (SvROK (sv)) \ |
|
|
773 | sv = SvRV (sv); \ |
|
|
774 | \ |
|
|
775 | if (SvTYPE(sv) == SVt_PVHV) \ |
|
|
776 | { \ |
|
|
777 | HE *he = hv_fetch_ent((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
778 | \ |
|
|
779 | if (!he) \ |
|
|
780 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
781 | \ |
|
|
782 | (sv) = SvRV (HeVAL(he)); \ |
|
|
783 | } \ |
|
|
784 | \ |
|
|
785 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
786 | if (!SvOBJECT(sv) || SvSTASH(sv) != coro_state_stash) \ |
|
|
787 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
788 | \ |
|
|
789 | } while(0) |
|
|
790 | |
|
|
791 | #define SvSTATE(sv) (struct coro *)SvIV (sv) |
|
|
792 | |
|
|
793 | static void |
|
|
794 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
|
|
795 | { |
|
|
796 | SV_CORO (prev, "Coro::transfer"); |
|
|
797 | SV_CORO (next, "Coro::transfer"); |
|
|
798 | |
|
|
799 | transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags); |
|
|
800 | } |
|
|
801 | |
301 | |
802 | /** Coro ********************************************************************/ |
302 | /** Coro ********************************************************************/ |
803 | |
303 | |
804 | #define PRIO_MAX 3 |
304 | #define PRIO_MAX 3 |
805 | #define PRIO_HIGH 1 |
305 | #define PRIO_HIGH 1 |
… | |
… | |
807 | #define PRIO_LOW -1 |
307 | #define PRIO_LOW -1 |
808 | #define PRIO_IDLE -3 |
308 | #define PRIO_IDLE -3 |
809 | #define PRIO_MIN -4 |
309 | #define PRIO_MIN -4 |
810 | |
310 | |
811 | /* for Coro.pm */ |
311 | /* for Coro.pm */ |
812 | static GV *coro_current, *coro_idle; |
312 | static SV *coro_current; |
|
|
313 | static SV *coro_readyhook; |
813 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
314 | static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1]; |
814 | static int coro_nready; |
315 | static CV *cv_coro_run, *cv_coro_terminate; |
|
|
316 | static struct coro *coro_first; |
|
|
317 | #define coro_nready coroapi.nready |
815 | |
318 | |
816 | static void |
319 | /** lowlevel stuff **********************************************************/ |
817 | coro_enq (SV *sv) |
|
|
818 | { |
|
|
819 | if (SvTYPE (sv) == SVt_PVHV) |
|
|
820 | { |
|
|
821 | SV **xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
822 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
823 | |
|
|
824 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
825 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
826 | : prio; |
|
|
827 | |
|
|
828 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
829 | coro_nready++; |
|
|
830 | |
|
|
831 | return; |
|
|
832 | } |
|
|
833 | |
|
|
834 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
|
|
835 | } |
|
|
836 | |
320 | |
837 | static SV * |
321 | static SV * |
838 | coro_deq (int min_prio) |
322 | coro_get_sv (pTHX_ const char *name, int create) |
839 | { |
323 | { |
840 | int prio = PRIO_MAX - PRIO_MIN; |
324 | #if PERL_VERSION_ATLEAST (5,10,0) |
841 | |
325 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
842 | min_prio -= PRIO_MIN; |
326 | get_sv (name, create); |
843 | if (min_prio < 0) |
327 | #endif |
844 | min_prio = 0; |
328 | return get_sv (name, create); |
845 | |
|
|
846 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
847 | if (av_len (coro_ready[prio]) >= 0) |
|
|
848 | { |
|
|
849 | coro_nready--; |
|
|
850 | return av_shift (coro_ready[prio]); |
|
|
851 | } |
|
|
852 | |
|
|
853 | return 0; |
|
|
854 | } |
329 | } |
855 | |
330 | |
856 | static void |
331 | static AV * |
857 | api_ready (SV *coro) |
332 | coro_get_av (pTHX_ const char *name, int create) |
858 | { |
333 | { |
|
|
334 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
335 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
336 | get_av (name, create); |
|
|
337 | #endif |
|
|
338 | return get_av (name, create); |
|
|
339 | } |
|
|
340 | |
|
|
341 | static HV * |
|
|
342 | coro_get_hv (pTHX_ const char *name, int create) |
|
|
343 | { |
|
|
344 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
345 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
346 | get_hv (name, create); |
|
|
347 | #endif |
|
|
348 | return get_hv (name, create); |
|
|
349 | } |
|
|
350 | |
|
|
351 | /* may croak */ |
|
|
352 | INLINE CV * |
|
|
353 | coro_sv_2cv (pTHX_ SV *sv) |
|
|
354 | { |
|
|
355 | HV *st; |
|
|
356 | GV *gvp; |
|
|
357 | return sv_2cv (sv, &st, &gvp, 0); |
|
|
358 | } |
|
|
359 | |
|
|
360 | /*****************************************************************************/ |
|
|
361 | /* magic glue */ |
|
|
362 | |
|
|
363 | #define CORO_MAGIC_type_cv 26 |
|
|
364 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
|
|
365 | |
|
|
366 | #define CORO_MAGIC_NN(sv, type) \ |
|
|
367 | (expect_true (SvMAGIC (sv)->mg_type == type) \ |
|
|
368 | ? SvMAGIC (sv) \ |
|
|
369 | : mg_find (sv, type)) |
|
|
370 | |
|
|
371 | #define CORO_MAGIC(sv, type) \ |
|
|
372 | (expect_true (SvMAGIC (sv)) \ |
|
|
373 | ? CORO_MAGIC_NN (sv, type) \ |
|
|
374 | : 0) |
|
|
375 | |
|
|
376 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
|
|
377 | #define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state) |
|
|
378 | |
|
|
379 | INLINE struct coro * |
|
|
380 | SvSTATE_ (pTHX_ SV *coro) |
|
|
381 | { |
|
|
382 | HV *stash; |
|
|
383 | MAGIC *mg; |
|
|
384 | |
859 | if (SvROK (coro)) |
385 | if (SvROK (coro)) |
860 | coro = SvRV (coro); |
386 | coro = SvRV (coro); |
861 | |
387 | |
862 | coro_enq (SvREFCNT_inc (coro)); |
388 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
863 | } |
389 | croak ("Coro::State object required"); |
864 | |
390 | |
|
|
391 | stash = SvSTASH (coro); |
|
|
392 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
393 | { |
|
|
394 | /* very slow, but rare, check */ |
|
|
395 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
396 | croak ("Coro::State object required"); |
|
|
397 | } |
|
|
398 | |
|
|
399 | mg = CORO_MAGIC_state (coro); |
|
|
400 | return (struct coro *)mg->mg_ptr; |
|
|
401 | } |
|
|
402 | |
|
|
403 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
404 | |
|
|
405 | /* faster than SvSTATE, but expects a coroutine hv */ |
|
|
406 | #define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr) |
|
|
407 | #define SvSTATE_current SvSTATE_hv (SvRV (coro_current)) |
|
|
408 | |
|
|
409 | /*****************************************************************************/ |
|
|
410 | /* padlist management and caching */ |
|
|
411 | |
|
|
412 | static AV * |
|
|
413 | coro_derive_padlist (pTHX_ CV *cv) |
|
|
414 | { |
|
|
415 | AV *padlist = CvPADLIST (cv); |
|
|
416 | AV *newpadlist, *newpad; |
|
|
417 | |
|
|
418 | newpadlist = newAV (); |
|
|
419 | AvREAL_off (newpadlist); |
|
|
420 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
421 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
422 | #else |
|
|
423 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
|
|
424 | #endif |
|
|
425 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
|
|
426 | --AvFILLp (padlist); |
|
|
427 | |
|
|
428 | av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0])); |
|
|
429 | av_store (newpadlist, 1, (SV *)newpad); |
|
|
430 | |
|
|
431 | return newpadlist; |
|
|
432 | } |
|
|
433 | |
|
|
434 | static void |
|
|
435 | free_padlist (pTHX_ AV *padlist) |
|
|
436 | { |
|
|
437 | /* may be during global destruction */ |
|
|
438 | if (!IN_DESTRUCT) |
|
|
439 | { |
|
|
440 | I32 i = AvFILLp (padlist); |
|
|
441 | |
|
|
442 | while (i > 0) /* special-case index 0 */ |
|
|
443 | { |
|
|
444 | /* we try to be extra-careful here */ |
|
|
445 | AV *av = (AV *)AvARRAY (padlist)[i--]; |
|
|
446 | I32 j = AvFILLp (av); |
|
|
447 | |
|
|
448 | while (j >= 0) |
|
|
449 | SvREFCNT_dec (AvARRAY (av)[j--]); |
|
|
450 | |
|
|
451 | AvFILLp (av) = -1; |
|
|
452 | SvREFCNT_dec (av); |
|
|
453 | } |
|
|
454 | |
|
|
455 | SvREFCNT_dec (AvARRAY (padlist)[0]); |
|
|
456 | |
|
|
457 | AvFILLp (padlist) = -1; |
|
|
458 | SvREFCNT_dec ((SV*)padlist); |
|
|
459 | } |
|
|
460 | } |
|
|
461 | |
865 | static void |
462 | static int |
866 | api_schedule (void) |
463 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
867 | { |
464 | { |
868 | SV *prev, *next; |
465 | AV *padlist; |
|
|
466 | AV *av = (AV *)mg->mg_obj; |
869 | |
467 | |
|
|
468 | /* casting is fun. */ |
|
|
469 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
470 | free_padlist (aTHX_ padlist); |
|
|
471 | |
|
|
472 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
|
|
473 | |
|
|
474 | return 0; |
|
|
475 | } |
|
|
476 | |
|
|
477 | static MGVTBL coro_cv_vtbl = { |
|
|
478 | 0, 0, 0, 0, |
|
|
479 | coro_cv_free |
|
|
480 | }; |
|
|
481 | |
|
|
482 | /* the next two functions merely cache the padlists */ |
|
|
483 | static void |
|
|
484 | get_padlist (pTHX_ CV *cv) |
|
|
485 | { |
|
|
486 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
487 | AV *av; |
|
|
488 | |
|
|
489 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
|
|
490 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
|
|
491 | else |
|
|
492 | { |
|
|
493 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
494 | /* this is probably cleaner? but also slower! */ |
|
|
495 | /* in practise, it seems to be less stable */ |
|
|
496 | CV *cp = Perl_cv_clone (aTHX_ cv); |
|
|
497 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
498 | CvPADLIST (cp) = 0; |
|
|
499 | SvREFCNT_dec (cp); |
|
|
500 | #else |
|
|
501 | CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv); |
|
|
502 | #endif |
|
|
503 | } |
|
|
504 | } |
|
|
505 | |
|
|
506 | static void |
|
|
507 | put_padlist (pTHX_ CV *cv) |
|
|
508 | { |
|
|
509 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
|
510 | AV *av; |
|
|
511 | |
|
|
512 | if (expect_false (!mg)) |
|
|
513 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
|
|
514 | |
|
|
515 | av = (AV *)mg->mg_obj; |
|
|
516 | |
|
|
517 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
|
|
518 | av_extend (av, AvFILLp (av) + 1); |
|
|
519 | |
|
|
520 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
|
|
521 | } |
|
|
522 | |
|
|
523 | /** load & save, init *******************************************************/ |
|
|
524 | |
|
|
525 | static void |
|
|
526 | load_perl (pTHX_ Coro__State c) |
|
|
527 | { |
|
|
528 | perl_slots *slot = c->slot; |
|
|
529 | c->slot = 0; |
|
|
530 | |
|
|
531 | PL_mainstack = c->mainstack; |
|
|
532 | |
|
|
533 | GvSV (PL_defgv) = slot->defsv; |
|
|
534 | GvAV (PL_defgv) = slot->defav; |
|
|
535 | GvSV (PL_errgv) = slot->errsv; |
|
|
536 | GvSV (irsgv) = slot->irsgv; |
|
|
537 | GvHV (PL_hintgv) = slot->hinthv; |
|
|
538 | |
|
|
539 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
540 | # include "state.h" |
|
|
541 | #undef VAR |
|
|
542 | |
|
|
543 | { |
|
|
544 | dSP; |
|
|
545 | |
|
|
546 | CV *cv; |
|
|
547 | |
|
|
548 | /* now do the ugly restore mess */ |
|
|
549 | while (expect_true (cv = (CV *)POPs)) |
|
|
550 | { |
|
|
551 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
|
|
552 | CvDEPTH (cv) = PTR2IV (POPs); |
|
|
553 | CvPADLIST (cv) = (AV *)POPs; |
|
|
554 | } |
|
|
555 | |
|
|
556 | PUTBACK; |
|
|
557 | } |
|
|
558 | |
|
|
559 | slf_frame = c->slf_frame; |
|
|
560 | CORO_THROW = c->except; |
|
|
561 | } |
|
|
562 | |
|
|
563 | static void |
|
|
564 | save_perl (pTHX_ Coro__State c) |
|
|
565 | { |
|
|
566 | c->except = CORO_THROW; |
|
|
567 | c->slf_frame = slf_frame; |
|
|
568 | |
|
|
569 | { |
|
|
570 | dSP; |
|
|
571 | I32 cxix = cxstack_ix; |
|
|
572 | PERL_CONTEXT *ccstk = cxstack; |
|
|
573 | PERL_SI *top_si = PL_curstackinfo; |
|
|
574 | |
|
|
575 | /* |
|
|
576 | * the worst thing you can imagine happens first - we have to save |
|
|
577 | * (and reinitialize) all cv's in the whole callchain :( |
|
|
578 | */ |
|
|
579 | |
|
|
580 | XPUSHs (Nullsv); |
|
|
581 | /* this loop was inspired by pp_caller */ |
|
|
582 | for (;;) |
|
|
583 | { |
|
|
584 | while (expect_true (cxix >= 0)) |
|
|
585 | { |
|
|
586 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
|
|
587 | |
|
|
588 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
|
|
589 | { |
|
|
590 | CV *cv = cx->blk_sub.cv; |
|
|
591 | |
|
|
592 | if (expect_true (CvDEPTH (cv))) |
|
|
593 | { |
|
|
594 | EXTEND (SP, 3); |
|
|
595 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
596 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
|
|
597 | PUSHs ((SV *)cv); |
|
|
598 | |
|
|
599 | CvDEPTH (cv) = 0; |
|
|
600 | get_padlist (aTHX_ cv); |
|
|
601 | } |
|
|
602 | } |
|
|
603 | } |
|
|
604 | |
|
|
605 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
|
|
606 | break; |
|
|
607 | |
|
|
608 | top_si = top_si->si_prev; |
|
|
609 | ccstk = top_si->si_cxstack; |
|
|
610 | cxix = top_si->si_cxix; |
|
|
611 | } |
|
|
612 | |
|
|
613 | PUTBACK; |
|
|
614 | } |
|
|
615 | |
|
|
616 | /* allocate some space on the context stack for our purposes */ |
|
|
617 | /* we manually unroll here, as usually 2 slots is enough */ |
|
|
618 | if (SLOT_COUNT >= 1) CXINC; |
|
|
619 | if (SLOT_COUNT >= 2) CXINC; |
|
|
620 | if (SLOT_COUNT >= 3) CXINC; |
|
|
621 | { |
|
|
622 | int i; |
|
|
623 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
624 | CXINC; |
|
|
625 | } |
|
|
626 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
|
|
627 | |
|
|
628 | c->mainstack = PL_mainstack; |
|
|
629 | |
|
|
630 | { |
|
|
631 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
|
|
632 | |
|
|
633 | slot->defav = GvAV (PL_defgv); |
|
|
634 | slot->defsv = DEFSV; |
|
|
635 | slot->errsv = ERRSV; |
|
|
636 | slot->irsgv = GvSV (irsgv); |
|
|
637 | slot->hinthv = GvHV (PL_hintgv); |
|
|
638 | |
|
|
639 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
640 | # include "state.h" |
|
|
641 | #undef VAR |
|
|
642 | } |
|
|
643 | } |
|
|
644 | |
|
|
645 | /* |
|
|
646 | * allocate various perl stacks. This is almost an exact copy |
|
|
647 | * of perl.c:init_stacks, except that it uses less memory |
|
|
648 | * on the (sometimes correct) assumption that coroutines do |
|
|
649 | * not usually need a lot of stackspace. |
|
|
650 | */ |
|
|
651 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
652 | # define coro_init_stacks(thx) init_stacks () |
|
|
653 | #else |
|
|
654 | static void |
|
|
655 | coro_init_stacks (pTHX) |
|
|
656 | { |
|
|
657 | PL_curstackinfo = new_stackinfo(32, 8); |
|
|
658 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
659 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
660 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
661 | |
|
|
662 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
663 | PL_stack_sp = PL_stack_base; |
|
|
664 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
665 | |
|
|
666 | New(50,PL_tmps_stack,32,SV*); |
|
|
667 | PL_tmps_floor = -1; |
|
|
668 | PL_tmps_ix = -1; |
|
|
669 | PL_tmps_max = 32; |
|
|
670 | |
|
|
671 | New(54,PL_markstack,16,I32); |
|
|
672 | PL_markstack_ptr = PL_markstack; |
|
|
673 | PL_markstack_max = PL_markstack + 16; |
|
|
674 | |
|
|
675 | #ifdef SET_MARK_OFFSET |
|
|
676 | SET_MARK_OFFSET; |
|
|
677 | #endif |
|
|
678 | |
|
|
679 | New(54,PL_scopestack,8,I32); |
|
|
680 | PL_scopestack_ix = 0; |
|
|
681 | PL_scopestack_max = 8; |
|
|
682 | |
|
|
683 | New(54,PL_savestack,24,ANY); |
|
|
684 | PL_savestack_ix = 0; |
|
|
685 | PL_savestack_max = 24; |
|
|
686 | |
|
|
687 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
688 | New(54,PL_retstack,4,OP*); |
|
|
689 | PL_retstack_ix = 0; |
|
|
690 | PL_retstack_max = 4; |
|
|
691 | #endif |
|
|
692 | } |
|
|
693 | #endif |
|
|
694 | |
|
|
695 | /* |
|
|
696 | * destroy the stacks, the callchain etc... |
|
|
697 | */ |
|
|
698 | static void |
|
|
699 | coro_destruct_stacks (pTHX) |
|
|
700 | { |
|
|
701 | while (PL_curstackinfo->si_next) |
|
|
702 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
703 | |
|
|
704 | while (PL_curstackinfo) |
|
|
705 | { |
|
|
706 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
707 | |
|
|
708 | if (!IN_DESTRUCT) |
|
|
709 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
710 | |
|
|
711 | Safefree (PL_curstackinfo->si_cxstack); |
|
|
712 | Safefree (PL_curstackinfo); |
|
|
713 | PL_curstackinfo = p; |
|
|
714 | } |
|
|
715 | |
|
|
716 | Safefree (PL_tmps_stack); |
|
|
717 | Safefree (PL_markstack); |
|
|
718 | Safefree (PL_scopestack); |
|
|
719 | Safefree (PL_savestack); |
|
|
720 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
721 | Safefree (PL_retstack); |
|
|
722 | #endif |
|
|
723 | } |
|
|
724 | |
|
|
725 | #define CORO_RSS \ |
|
|
726 | rss += sizeof (SYM (curstackinfo)); \ |
|
|
727 | rss += (SYM (curstackinfo->si_cxmax) + 1) * sizeof (PERL_CONTEXT); \ |
|
|
728 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (SYM (curstack))) * sizeof (SV *); \ |
|
|
729 | rss += SYM (tmps_max) * sizeof (SV *); \ |
|
|
730 | rss += (SYM (markstack_max) - SYM (markstack_ptr)) * sizeof (I32); \ |
|
|
731 | rss += SYM (scopestack_max) * sizeof (I32); \ |
|
|
732 | rss += SYM (savestack_max) * sizeof (ANY); |
|
|
733 | |
|
|
734 | static size_t |
|
|
735 | coro_rss (pTHX_ struct coro *coro) |
|
|
736 | { |
|
|
737 | size_t rss = sizeof (*coro); |
|
|
738 | |
|
|
739 | if (coro->mainstack) |
|
|
740 | { |
|
|
741 | if (coro->flags & CF_RUNNING) |
|
|
742 | { |
|
|
743 | #define SYM(sym) PL_ ## sym |
|
|
744 | CORO_RSS; |
|
|
745 | #undef SYM |
|
|
746 | } |
|
|
747 | else |
|
|
748 | { |
|
|
749 | #define SYM(sym) coro->slot->sym |
|
|
750 | CORO_RSS; |
|
|
751 | #undef SYM |
|
|
752 | } |
|
|
753 | } |
|
|
754 | |
|
|
755 | return rss; |
|
|
756 | } |
|
|
757 | |
|
|
758 | /** coroutine stack handling ************************************************/ |
|
|
759 | |
|
|
760 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
761 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
762 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
763 | |
|
|
764 | /* apparently < 5.8.8 */ |
|
|
765 | #ifndef MgPV_nolen_const |
|
|
766 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
767 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
768 | (const char*)(mg)->mg_ptr) |
|
|
769 | #endif |
|
|
770 | |
|
|
771 | /* |
|
|
772 | * This overrides the default magic get method of %SIG elements. |
|
|
773 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
774 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
775 | * readback here. |
|
|
776 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
777 | * not expecting this to actually change the hook. This is a potential problem |
|
|
778 | * when a schedule happens then, but we ignore this. |
|
|
779 | */ |
|
|
780 | static int |
|
|
781 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
782 | { |
|
|
783 | const char *s = MgPV_nolen_const (mg); |
|
|
784 | |
|
|
785 | if (*s == '_') |
|
|
786 | { |
|
|
787 | SV **svp = 0; |
|
|
788 | |
|
|
789 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
790 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
791 | |
|
|
792 | if (svp) |
|
|
793 | { |
|
|
794 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
795 | return 0; |
|
|
796 | } |
|
|
797 | } |
|
|
798 | |
|
|
799 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
800 | } |
|
|
801 | |
|
|
802 | static int |
|
|
803 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
804 | { |
|
|
805 | const char *s = MgPV_nolen_const (mg); |
|
|
806 | |
|
|
807 | if (*s == '_') |
|
|
808 | { |
|
|
809 | SV **svp = 0; |
|
|
810 | |
|
|
811 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
812 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
813 | |
|
|
814 | if (svp) |
|
|
815 | { |
|
|
816 | SV *old = *svp; |
|
|
817 | *svp = 0; |
|
|
818 | SvREFCNT_dec (old); |
|
|
819 | return 0; |
|
|
820 | } |
|
|
821 | } |
|
|
822 | |
|
|
823 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
824 | } |
|
|
825 | |
|
|
826 | static int |
|
|
827 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
828 | { |
|
|
829 | const char *s = MgPV_nolen_const (mg); |
|
|
830 | |
|
|
831 | if (*s == '_') |
|
|
832 | { |
|
|
833 | SV **svp = 0; |
|
|
834 | |
|
|
835 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
836 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
837 | |
|
|
838 | if (svp) |
|
|
839 | { |
|
|
840 | SV *old = *svp; |
|
|
841 | *svp = newSVsv (sv); |
|
|
842 | SvREFCNT_dec (old); |
|
|
843 | return 0; |
|
|
844 | } |
|
|
845 | } |
|
|
846 | |
|
|
847 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
|
|
848 | } |
|
|
849 | |
|
|
850 | static void |
|
|
851 | prepare_nop (pTHX_ struct coro_transfer_args *ta) |
|
|
852 | { |
|
|
853 | /* kind of mega-hacky, but works */ |
|
|
854 | ta->next = ta->prev = (struct coro *)ta; |
|
|
855 | } |
|
|
856 | |
|
|
857 | static int |
|
|
858 | slf_check_nop (pTHX_ struct CoroSLF *frame) |
|
|
859 | { |
|
|
860 | return 0; |
|
|
861 | } |
|
|
862 | |
|
|
863 | static int |
|
|
864 | slf_check_repeat (pTHX_ struct CoroSLF *frame) |
|
|
865 | { |
|
|
866 | return 1; |
|
|
867 | } |
|
|
868 | |
|
|
869 | static UNOP coro_setup_op; |
|
|
870 | |
|
|
871 | static void NOINLINE /* noinline to keep it out of the transfer fast path */ |
|
|
872 | coro_setup (pTHX_ struct coro *coro) |
|
|
873 | { |
|
|
874 | /* |
|
|
875 | * emulate part of the perl startup here. |
|
|
876 | */ |
|
|
877 | coro_init_stacks (aTHX); |
|
|
878 | |
|
|
879 | PL_runops = RUNOPS_DEFAULT; |
|
|
880 | PL_curcop = &PL_compiling; |
|
|
881 | PL_in_eval = EVAL_NULL; |
|
|
882 | PL_comppad = 0; |
|
|
883 | PL_comppad_name = 0; |
|
|
884 | PL_comppad_name_fill = 0; |
|
|
885 | PL_comppad_name_floor = 0; |
|
|
886 | PL_curpm = 0; |
|
|
887 | PL_curpad = 0; |
|
|
888 | PL_localizing = 0; |
|
|
889 | PL_dirty = 0; |
|
|
890 | PL_restartop = 0; |
|
|
891 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
892 | PL_parser = 0; |
|
|
893 | #endif |
|
|
894 | PL_hints = 0; |
|
|
895 | |
|
|
896 | /* recreate the die/warn hooks */ |
|
|
897 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
898 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
899 | |
|
|
900 | GvSV (PL_defgv) = newSV (0); |
|
|
901 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
902 | GvSV (PL_errgv) = newSV (0); |
|
|
903 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
904 | GvHV (PL_hintgv) = 0; |
|
|
905 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
906 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
907 | |
|
|
908 | { |
|
|
909 | dSP; |
|
|
910 | UNOP myop; |
|
|
911 | |
|
|
912 | Zero (&myop, 1, UNOP); |
|
|
913 | myop.op_next = Nullop; |
|
|
914 | myop.op_type = OP_ENTERSUB; |
|
|
915 | myop.op_flags = OPf_WANT_VOID; |
|
|
916 | |
|
|
917 | PUSHMARK (SP); |
|
|
918 | PUSHs ((SV *)coro->startcv); |
|
|
919 | PUTBACK; |
|
|
920 | PL_op = (OP *)&myop; |
|
|
921 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
922 | } |
|
|
923 | |
|
|
924 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
925 | * likely was suspended in pp_slf, so we have to emulate entering pp_slf here. |
|
|
926 | */ |
|
|
927 | slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */ |
|
|
928 | slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */ |
|
|
929 | |
|
|
930 | /* and we have to provide the pp_slf op in any case, so pp_slf can skip it */ |
|
|
931 | coro_setup_op.op_next = PL_op; |
|
|
932 | coro_setup_op.op_type = OP_ENTERSUB; |
|
|
933 | coro_setup_op.op_ppaddr = pp_slf; |
|
|
934 | /* no flags etc. required, as an init function won't be called */ |
|
|
935 | |
|
|
936 | PL_op = (OP *)&coro_setup_op; |
|
|
937 | |
|
|
938 | /* copy throw, in case it was set before coro_setup */ |
|
|
939 | CORO_THROW = coro->except; |
|
|
940 | } |
|
|
941 | |
|
|
942 | static void |
|
|
943 | coro_destruct_perl (pTHX_ struct coro *coro) |
|
|
944 | { |
|
|
945 | if (!IN_DESTRUCT) |
|
|
946 | { |
|
|
947 | /* restore all saved variables and stuff */ |
|
|
948 | LEAVE_SCOPE (0); |
|
|
949 | assert (PL_tmps_floor == -1); |
|
|
950 | |
|
|
951 | /* free all temporaries */ |
|
|
952 | FREETMPS; |
|
|
953 | assert (PL_tmps_ix == -1); |
|
|
954 | |
|
|
955 | /* unwind all extra stacks */ |
|
|
956 | POPSTACK_TO (PL_mainstack); |
|
|
957 | |
|
|
958 | /* unwind main stack */ |
|
|
959 | dounwind (-1); |
|
|
960 | } |
|
|
961 | |
|
|
962 | SvREFCNT_dec (GvSV (PL_defgv)); |
|
|
963 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
964 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
965 | SvREFCNT_dec (PL_defoutgv); |
|
|
966 | SvREFCNT_dec (PL_rs); |
|
|
967 | SvREFCNT_dec (GvSV (irsgv)); |
|
|
968 | SvREFCNT_dec (GvHV (PL_hintgv)); |
|
|
969 | |
|
|
970 | SvREFCNT_dec (PL_diehook); |
|
|
971 | SvREFCNT_dec (PL_warnhook); |
|
|
972 | |
|
|
973 | SvREFCNT_dec (coro->saved_deffh); |
|
|
974 | SvREFCNT_dec (coro->rouse_cb); |
|
|
975 | SvREFCNT_dec (coro->invoke_cb); |
|
|
976 | SvREFCNT_dec (coro->invoke_av); |
|
|
977 | |
|
|
978 | coro_destruct_stacks (aTHX); |
|
|
979 | } |
|
|
980 | |
|
|
981 | INLINE void |
|
|
982 | free_coro_mortal (pTHX) |
|
|
983 | { |
|
|
984 | if (expect_true (coro_mortal)) |
|
|
985 | { |
|
|
986 | SvREFCNT_dec (coro_mortal); |
|
|
987 | coro_mortal = 0; |
|
|
988 | } |
|
|
989 | } |
|
|
990 | |
|
|
991 | static int |
|
|
992 | runops_trace (pTHX) |
|
|
993 | { |
|
|
994 | COP *oldcop = 0; |
|
|
995 | int oldcxix = -2; |
|
|
996 | |
|
|
997 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
998 | { |
|
|
999 | PERL_ASYNC_CHECK (); |
|
|
1000 | |
|
|
1001 | if (cctx_current->flags & CC_TRACE_ALL) |
|
|
1002 | { |
|
|
1003 | if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB) |
|
|
1004 | { |
|
|
1005 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1006 | SV **bot, **top; |
|
|
1007 | AV *av = newAV (); /* return values */ |
|
|
1008 | SV **cb; |
|
|
1009 | dSP; |
|
|
1010 | |
|
|
1011 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1012 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1013 | if (isGV (gv)) |
|
|
1014 | gv_efullname3 (fullname, gv, 0); |
|
|
1015 | |
|
|
1016 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
1017 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
1018 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
1019 | : bot; |
|
|
1020 | |
|
|
1021 | av_extend (av, top - bot); |
|
|
1022 | while (bot < top) |
|
|
1023 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
1024 | |
|
|
1025 | PL_runops = RUNOPS_DEFAULT; |
|
|
1026 | ENTER; |
|
|
1027 | SAVETMPS; |
|
|
1028 | EXTEND (SP, 3); |
|
|
1029 | PUSHMARK (SP); |
|
|
1030 | PUSHs (&PL_sv_no); |
|
|
1031 | PUSHs (fullname); |
|
|
1032 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
1033 | PUTBACK; |
|
|
1034 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1035 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1036 | SPAGAIN; |
|
|
1037 | FREETMPS; |
|
|
1038 | LEAVE; |
|
|
1039 | PL_runops = runops_trace; |
|
|
1040 | } |
|
|
1041 | |
|
|
1042 | if (oldcop != PL_curcop) |
|
|
1043 | { |
|
|
1044 | oldcop = PL_curcop; |
|
|
1045 | |
|
|
1046 | if (PL_curcop != &PL_compiling) |
|
|
1047 | { |
|
|
1048 | SV **cb; |
|
|
1049 | |
|
|
1050 | if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB) |
|
|
1051 | { |
|
|
1052 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
1053 | |
|
|
1054 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
1055 | { |
|
|
1056 | dSP; |
|
|
1057 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
1058 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
1059 | |
|
|
1060 | if (isGV (gv)) |
|
|
1061 | gv_efullname3 (fullname, gv, 0); |
|
|
1062 | |
|
|
1063 | PL_runops = RUNOPS_DEFAULT; |
|
|
1064 | ENTER; |
|
|
1065 | SAVETMPS; |
|
|
1066 | EXTEND (SP, 3); |
|
|
1067 | PUSHMARK (SP); |
|
|
1068 | PUSHs (&PL_sv_yes); |
|
|
1069 | PUSHs (fullname); |
|
|
1070 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
1071 | PUTBACK; |
|
|
1072 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
1073 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1074 | SPAGAIN; |
|
|
1075 | FREETMPS; |
|
|
1076 | LEAVE; |
|
|
1077 | PL_runops = runops_trace; |
|
|
1078 | } |
|
|
1079 | |
|
|
1080 | oldcxix = cxstack_ix; |
|
|
1081 | } |
|
|
1082 | |
|
|
1083 | if (cctx_current->flags & CC_TRACE_LINE) |
|
|
1084 | { |
|
|
1085 | dSP; |
|
|
1086 | |
|
|
1087 | PL_runops = RUNOPS_DEFAULT; |
|
|
1088 | ENTER; |
|
|
1089 | SAVETMPS; |
|
|
1090 | EXTEND (SP, 3); |
|
|
1091 | PL_runops = RUNOPS_DEFAULT; |
|
|
1092 | PUSHMARK (SP); |
|
|
1093 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
1094 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
1095 | PUTBACK; |
|
|
1096 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1097 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1098 | SPAGAIN; |
|
|
1099 | FREETMPS; |
|
|
1100 | LEAVE; |
|
|
1101 | PL_runops = runops_trace; |
|
|
1102 | } |
|
|
1103 | } |
|
|
1104 | } |
|
|
1105 | } |
|
|
1106 | } |
|
|
1107 | |
|
|
1108 | TAINT_NOT; |
|
|
1109 | return 0; |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | static struct CoroSLF cctx_ssl_frame; |
|
|
1113 | |
|
|
1114 | static void |
|
|
1115 | slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta) |
|
|
1116 | { |
|
|
1117 | ta->prev = 0; |
|
|
1118 | } |
|
|
1119 | |
|
|
1120 | static int |
|
|
1121 | slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame) |
|
|
1122 | { |
|
|
1123 | *frame = cctx_ssl_frame; |
|
|
1124 | |
|
|
1125 | return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */ |
|
|
1126 | } |
|
|
1127 | |
|
|
1128 | /* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */ |
|
|
1129 | static void NOINLINE |
|
|
1130 | cctx_prepare (pTHX) |
|
|
1131 | { |
|
|
1132 | PL_top_env = &PL_start_env; |
|
|
1133 | |
|
|
1134 | if (cctx_current->flags & CC_TRACE) |
|
|
1135 | PL_runops = runops_trace; |
|
|
1136 | |
|
|
1137 | /* we already must be executing an SLF op, there is no other valid way |
|
|
1138 | * that can lead to creation of a new cctx */ |
|
|
1139 | assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)", |
|
|
1140 | slf_frame.prepare && PL_op->op_ppaddr == pp_slf)); |
|
|
1141 | |
|
|
1142 | /* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */ |
|
|
1143 | cctx_ssl_frame = slf_frame; |
|
|
1144 | |
|
|
1145 | slf_frame.prepare = slf_prepare_set_stacklevel; |
|
|
1146 | slf_frame.check = slf_check_set_stacklevel; |
|
|
1147 | } |
|
|
1148 | |
|
|
1149 | /* the tail of transfer: execute stuff we can only do after a transfer */ |
|
|
1150 | INLINE void |
|
|
1151 | transfer_tail (pTHX) |
|
|
1152 | { |
|
|
1153 | free_coro_mortal (aTHX); |
|
|
1154 | } |
|
|
1155 | |
|
|
1156 | /* |
|
|
1157 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1158 | */ |
|
|
1159 | static void |
|
|
1160 | cctx_run (void *arg) |
|
|
1161 | { |
|
|
1162 | #ifdef USE_ITHREADS |
|
|
1163 | # if CORO_PTHREAD |
|
|
1164 | PERL_SET_CONTEXT (coro_thx); |
|
|
1165 | # endif |
|
|
1166 | #endif |
|
|
1167 | { |
|
|
1168 | dTHX; |
|
|
1169 | |
|
|
1170 | /* normally we would need to skip the entersub here */ |
|
|
1171 | /* not doing so will re-execute it, which is exactly what we want */ |
|
|
1172 | /* PL_nop = PL_nop->op_next */ |
|
|
1173 | |
|
|
1174 | /* inject a fake subroutine call to cctx_init */ |
|
|
1175 | cctx_prepare (aTHX); |
|
|
1176 | |
|
|
1177 | /* cctx_run is the alternative tail of transfer() */ |
|
|
1178 | transfer_tail (aTHX); |
|
|
1179 | |
|
|
1180 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1181 | PL_restartop = PL_op; |
|
|
1182 | perl_run (PL_curinterp); |
|
|
1183 | /* |
|
|
1184 | * Unfortunately, there is no way to get at the return values of the |
|
|
1185 | * coro body here, as perl_run destroys these |
|
|
1186 | */ |
|
|
1187 | |
|
|
1188 | /* |
|
|
1189 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1190 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1191 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1192 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1193 | * coroutine as Coro has no such concept. |
|
|
1194 | * This actually isn't valid with the pthread backend, but OSes requiring |
|
|
1195 | * that backend are too broken to do it in a standards-compliant way. |
|
|
1196 | */ |
|
|
1197 | PL_top_env = main_top_env; |
|
|
1198 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1199 | } |
|
|
1200 | } |
|
|
1201 | |
|
|
1202 | static coro_cctx * |
|
|
1203 | cctx_new () |
|
|
1204 | { |
|
|
1205 | coro_cctx *cctx; |
|
|
1206 | |
|
|
1207 | ++cctx_count; |
|
|
1208 | New (0, cctx, 1, coro_cctx); |
|
|
1209 | |
|
|
1210 | cctx->gen = cctx_gen; |
|
|
1211 | cctx->flags = 0; |
|
|
1212 | cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */ |
|
|
1213 | |
|
|
1214 | return cctx; |
|
|
1215 | } |
|
|
1216 | |
|
|
1217 | /* create a new cctx only suitable as source */ |
|
|
1218 | static coro_cctx * |
|
|
1219 | cctx_new_empty () |
|
|
1220 | { |
|
|
1221 | coro_cctx *cctx = cctx_new (); |
|
|
1222 | |
|
|
1223 | cctx->sptr = 0; |
|
|
1224 | coro_create (&cctx->cctx, 0, 0, 0, 0); |
|
|
1225 | |
|
|
1226 | return cctx; |
|
|
1227 | } |
|
|
1228 | |
|
|
1229 | /* create a new cctx suitable as destination/running a perl interpreter */ |
|
|
1230 | static coro_cctx * |
|
|
1231 | cctx_new_run () |
|
|
1232 | { |
|
|
1233 | coro_cctx *cctx = cctx_new (); |
|
|
1234 | void *stack_start; |
|
|
1235 | size_t stack_size; |
|
|
1236 | |
|
|
1237 | #if HAVE_MMAP |
|
|
1238 | cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1239 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1240 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1241 | |
|
|
1242 | if (cctx->sptr != (void *)-1) |
|
|
1243 | { |
|
|
1244 | #if CORO_STACKGUARD |
|
|
1245 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1246 | #endif |
|
|
1247 | stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE; |
|
|
1248 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1249 | cctx->flags |= CC_MAPPED; |
|
|
1250 | } |
|
|
1251 | else |
|
|
1252 | #endif |
|
|
1253 | { |
|
|
1254 | cctx->ssize = cctx_stacksize * (long)sizeof (long); |
|
|
1255 | New (0, cctx->sptr, cctx_stacksize, long); |
|
|
1256 | |
|
|
1257 | if (!cctx->sptr) |
|
|
1258 | { |
|
|
1259 | perror ("FATAL: unable to allocate stack for coroutine, exiting."); |
|
|
1260 | _exit (EXIT_FAILURE); |
|
|
1261 | } |
|
|
1262 | |
|
|
1263 | stack_start = cctx->sptr; |
|
|
1264 | stack_size = cctx->ssize; |
|
|
1265 | } |
|
|
1266 | |
|
|
1267 | #if CORO_USE_VALGRIND |
|
|
1268 | cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size); |
|
|
1269 | #endif |
|
|
1270 | |
|
|
1271 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1272 | |
|
|
1273 | return cctx; |
|
|
1274 | } |
|
|
1275 | |
|
|
1276 | static void |
|
|
1277 | cctx_destroy (coro_cctx *cctx) |
|
|
1278 | { |
|
|
1279 | if (!cctx) |
|
|
1280 | return; |
|
|
1281 | |
|
|
1282 | assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary? |
|
|
1283 | |
|
|
1284 | --cctx_count; |
|
|
1285 | coro_destroy (&cctx->cctx); |
|
|
1286 | |
|
|
1287 | /* coro_transfer creates new, empty cctx's */ |
|
|
1288 | if (cctx->sptr) |
|
|
1289 | { |
|
|
1290 | #if CORO_USE_VALGRIND |
|
|
1291 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1292 | #endif |
|
|
1293 | |
|
|
1294 | #if HAVE_MMAP |
|
|
1295 | if (cctx->flags & CC_MAPPED) |
|
|
1296 | munmap (cctx->sptr, cctx->ssize); |
|
|
1297 | else |
|
|
1298 | #endif |
|
|
1299 | Safefree (cctx->sptr); |
|
|
1300 | } |
|
|
1301 | |
|
|
1302 | Safefree (cctx); |
|
|
1303 | } |
|
|
1304 | |
|
|
1305 | /* wether this cctx should be destructed */ |
|
|
1306 | #define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE)) |
|
|
1307 | |
|
|
1308 | static coro_cctx * |
|
|
1309 | cctx_get (pTHX) |
|
|
1310 | { |
|
|
1311 | while (expect_true (cctx_first)) |
|
|
1312 | { |
|
|
1313 | coro_cctx *cctx = cctx_first; |
|
|
1314 | cctx_first = cctx->next; |
|
|
1315 | --cctx_idle; |
|
|
1316 | |
|
|
1317 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1318 | return cctx; |
|
|
1319 | |
|
|
1320 | cctx_destroy (cctx); |
|
|
1321 | } |
|
|
1322 | |
|
|
1323 | return cctx_new_run (); |
|
|
1324 | } |
|
|
1325 | |
|
|
1326 | static void |
|
|
1327 | cctx_put (coro_cctx *cctx) |
|
|
1328 | { |
|
|
1329 | assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr)); |
|
|
1330 | |
|
|
1331 | /* free another cctx if overlimit */ |
|
|
1332 | if (expect_false (cctx_idle >= cctx_max_idle)) |
|
|
1333 | { |
|
|
1334 | coro_cctx *first = cctx_first; |
|
|
1335 | cctx_first = first->next; |
|
|
1336 | --cctx_idle; |
|
|
1337 | |
|
|
1338 | cctx_destroy (first); |
|
|
1339 | } |
|
|
1340 | |
|
|
1341 | ++cctx_idle; |
|
|
1342 | cctx->next = cctx_first; |
|
|
1343 | cctx_first = cctx; |
|
|
1344 | } |
|
|
1345 | |
|
|
1346 | /** coroutine switching *****************************************************/ |
|
|
1347 | |
|
|
1348 | static void |
|
|
1349 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1350 | { |
|
|
1351 | /* TODO: throwing up here is considered harmful */ |
|
|
1352 | |
|
|
1353 | if (expect_true (prev != next)) |
|
|
1354 | { |
|
|
1355 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1356 | croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,"); |
|
|
1357 | |
|
|
1358 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1359 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,"); |
|
|
1360 | |
|
|
1361 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1362 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,"); |
|
|
1363 | |
|
|
1364 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1365 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1366 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,"); |
|
|
1367 | #endif |
|
|
1368 | } |
|
|
1369 | } |
|
|
1370 | |
|
|
1371 | /* always use the TRANSFER macro */ |
|
|
1372 | static void NOINLINE /* noinline so we have a fixed stackframe */ |
|
|
1373 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1374 | { |
|
|
1375 | dSTACKLEVEL; |
|
|
1376 | |
|
|
1377 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1378 | if (expect_false (!prev)) |
|
|
1379 | { |
|
|
1380 | cctx_current->idle_sp = STACKLEVEL; |
|
|
1381 | assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1382 | } |
|
|
1383 | else if (expect_true (prev != next)) |
|
|
1384 | { |
|
|
1385 | coro_cctx *cctx_prev; |
|
|
1386 | |
|
|
1387 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1388 | { |
|
|
1389 | /* create a new empty/source context */ |
|
|
1390 | prev->flags &= ~CF_NEW; |
|
|
1391 | prev->flags |= CF_RUNNING; |
|
|
1392 | } |
|
|
1393 | |
|
|
1394 | prev->flags &= ~CF_RUNNING; |
|
|
1395 | next->flags |= CF_RUNNING; |
|
|
1396 | |
|
|
1397 | /* first get rid of the old state */ |
|
|
1398 | save_perl (aTHX_ prev); |
|
|
1399 | |
|
|
1400 | if (expect_false (next->flags & CF_NEW)) |
|
|
1401 | { |
|
|
1402 | /* need to start coroutine */ |
|
|
1403 | next->flags &= ~CF_NEW; |
|
|
1404 | /* setup coroutine call */ |
|
|
1405 | coro_setup (aTHX_ next); |
|
|
1406 | } |
|
|
1407 | else |
|
|
1408 | load_perl (aTHX_ next); |
|
|
1409 | |
|
|
1410 | /* possibly untie and reuse the cctx */ |
|
|
1411 | if (expect_true ( |
|
|
1412 | cctx_current->idle_sp == STACKLEVEL |
|
|
1413 | && !(cctx_current->flags & CC_TRACE) |
|
|
1414 | && !force_cctx |
|
|
1415 | )) |
|
|
1416 | { |
|
|
1417 | /* I assume that stacklevel is a stronger indicator than PL_top_env changes */ |
|
|
1418 | assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te)); |
|
|
1419 | |
|
|
1420 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */ |
|
|
1421 | /* without this the next cctx_get might destroy the running cctx while still in use */ |
|
|
1422 | if (expect_false (CCTX_EXPIRED (cctx_current))) |
|
|
1423 | if (expect_true (!next->cctx)) |
|
|
1424 | next->cctx = cctx_get (aTHX); |
|
|
1425 | |
|
|
1426 | cctx_put (cctx_current); |
|
|
1427 | } |
|
|
1428 | else |
|
|
1429 | prev->cctx = cctx_current; |
|
|
1430 | |
|
|
1431 | ++next->usecount; |
|
|
1432 | |
|
|
1433 | cctx_prev = cctx_current; |
|
|
1434 | cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX); |
|
|
1435 | |
|
|
1436 | next->cctx = 0; |
|
|
1437 | |
|
|
1438 | if (expect_false (cctx_prev != cctx_current)) |
|
|
1439 | { |
|
|
1440 | cctx_prev->top_env = PL_top_env; |
|
|
1441 | PL_top_env = cctx_current->top_env; |
|
|
1442 | coro_transfer (&cctx_prev->cctx, &cctx_current->cctx); |
|
|
1443 | } |
|
|
1444 | |
|
|
1445 | transfer_tail (aTHX); |
|
|
1446 | } |
|
|
1447 | } |
|
|
1448 | |
|
|
1449 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1450 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1451 | |
|
|
1452 | /** high level stuff ********************************************************/ |
|
|
1453 | |
|
|
1454 | static int |
|
|
1455 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1456 | { |
|
|
1457 | if (coro->flags & CF_DESTROYED) |
|
|
1458 | return 0; |
|
|
1459 | |
|
|
1460 | if (coro->on_destroy) |
|
|
1461 | coro->on_destroy (aTHX_ coro); |
|
|
1462 | |
|
|
1463 | coro->flags |= CF_DESTROYED; |
|
|
1464 | |
|
|
1465 | if (coro->flags & CF_READY) |
|
|
1466 | { |
|
|
1467 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1468 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1469 | --coro_nready; |
|
|
1470 | } |
|
|
1471 | else |
|
|
1472 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1473 | |
|
|
1474 | if (coro->mainstack |
|
|
1475 | && coro->mainstack != main_mainstack |
|
|
1476 | && coro->slot |
|
|
1477 | && !PL_dirty) |
|
|
1478 | { |
|
|
1479 | struct coro temp; |
|
|
1480 | |
|
|
1481 | assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack)); |
|
|
1482 | |
|
|
1483 | save_perl (aTHX_ &temp); |
|
|
1484 | load_perl (aTHX_ coro); |
|
|
1485 | |
|
|
1486 | coro_destruct_perl (aTHX_ coro); |
|
|
1487 | |
|
|
1488 | load_perl (aTHX_ &temp); |
|
|
1489 | |
|
|
1490 | coro->slot = 0; |
|
|
1491 | } |
|
|
1492 | |
|
|
1493 | cctx_destroy (coro->cctx); |
|
|
1494 | SvREFCNT_dec (coro->startcv); |
|
|
1495 | SvREFCNT_dec (coro->args); |
|
|
1496 | SvREFCNT_dec (CORO_THROW); |
|
|
1497 | |
|
|
1498 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1499 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1500 | if (coro == coro_first) coro_first = coro->next; |
|
|
1501 | |
|
|
1502 | return 1; |
|
|
1503 | } |
|
|
1504 | |
|
|
1505 | static int |
|
|
1506 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1507 | { |
|
|
1508 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1509 | mg->mg_ptr = 0; |
|
|
1510 | |
|
|
1511 | coro->hv = 0; |
|
|
1512 | |
|
|
1513 | if (--coro->refcnt < 0) |
|
|
1514 | { |
|
|
1515 | coro_state_destroy (aTHX_ coro); |
|
|
1516 | Safefree (coro); |
|
|
1517 | } |
|
|
1518 | |
|
|
1519 | return 0; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | static int |
|
|
1523 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1524 | { |
|
|
1525 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1526 | |
|
|
1527 | ++coro->refcnt; |
|
|
1528 | |
|
|
1529 | return 0; |
|
|
1530 | } |
|
|
1531 | |
|
|
1532 | static MGVTBL coro_state_vtbl = { |
|
|
1533 | 0, 0, 0, 0, |
|
|
1534 | coro_state_free, |
|
|
1535 | 0, |
|
|
1536 | #ifdef MGf_DUP |
|
|
1537 | coro_state_dup, |
|
|
1538 | #else |
|
|
1539 | # define MGf_DUP 0 |
|
|
1540 | #endif |
|
|
1541 | }; |
|
|
1542 | |
|
|
1543 | static void |
|
|
1544 | prepare_transfer (pTHX_ struct coro_transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1545 | { |
|
|
1546 | ta->prev = SvSTATE (prev_sv); |
|
|
1547 | ta->next = SvSTATE (next_sv); |
|
|
1548 | TRANSFER_CHECK (*ta); |
|
|
1549 | } |
|
|
1550 | |
|
|
1551 | static void |
|
|
1552 | api_transfer (pTHX_ SV *prev_sv, SV *next_sv) |
|
|
1553 | { |
|
|
1554 | struct coro_transfer_args ta; |
|
|
1555 | |
|
|
1556 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1557 | TRANSFER (ta, 1); |
|
|
1558 | } |
|
|
1559 | |
|
|
1560 | /*****************************************************************************/ |
|
|
1561 | /* gensub: simple closure generation utility */ |
|
|
1562 | |
|
|
1563 | #define GENSUB_ARG CvXSUBANY (cv).any_ptr |
|
|
1564 | |
|
|
1565 | /* create a closure from XS, returns a code reference */ |
|
|
1566 | /* the arg can be accessed via GENSUB_ARG from the callback */ |
|
|
1567 | /* the callback must use dXSARGS/XSRETURN */ |
|
|
1568 | static SV * |
|
|
1569 | gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg) |
|
|
1570 | { |
|
|
1571 | CV *cv = (CV *)newSV (0); |
|
|
1572 | |
|
|
1573 | sv_upgrade ((SV *)cv, SVt_PVCV); |
|
|
1574 | |
|
|
1575 | CvANON_on (cv); |
|
|
1576 | CvISXSUB_on (cv); |
|
|
1577 | CvXSUB (cv) = xsub; |
|
|
1578 | GENSUB_ARG = arg; |
|
|
1579 | |
|
|
1580 | return newRV_noinc ((SV *)cv); |
|
|
1581 | } |
|
|
1582 | |
|
|
1583 | /** Coro ********************************************************************/ |
|
|
1584 | |
|
|
1585 | INLINE void |
|
|
1586 | coro_enq (pTHX_ struct coro *coro) |
|
|
1587 | { |
|
|
1588 | av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv)); |
|
|
1589 | } |
|
|
1590 | |
|
|
1591 | INLINE SV * |
|
|
1592 | coro_deq (pTHX) |
|
|
1593 | { |
|
|
1594 | int prio; |
|
|
1595 | |
|
|
1596 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
|
|
1597 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1598 | return av_shift (coro_ready [prio]); |
|
|
1599 | |
|
|
1600 | return 0; |
|
|
1601 | } |
|
|
1602 | |
|
|
1603 | static int |
|
|
1604 | api_ready (pTHX_ SV *coro_sv) |
|
|
1605 | { |
|
|
1606 | struct coro *coro; |
|
|
1607 | SV *sv_hook; |
|
|
1608 | void (*xs_hook)(void); |
|
|
1609 | |
|
|
1610 | coro = SvSTATE (coro_sv); |
|
|
1611 | |
|
|
1612 | if (coro->flags & CF_READY) |
|
|
1613 | return 0; |
|
|
1614 | |
|
|
1615 | coro->flags |= CF_READY; |
|
|
1616 | |
|
|
1617 | sv_hook = coro_nready ? 0 : coro_readyhook; |
|
|
1618 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
|
|
1619 | |
|
|
1620 | coro_enq (aTHX_ coro); |
|
|
1621 | ++coro_nready; |
|
|
1622 | |
|
|
1623 | if (sv_hook) |
|
|
1624 | { |
|
|
1625 | dSP; |
|
|
1626 | |
|
|
1627 | ENTER; |
|
|
1628 | SAVETMPS; |
|
|
1629 | |
|
|
1630 | PUSHMARK (SP); |
|
|
1631 | PUTBACK; |
|
|
1632 | call_sv (sv_hook, G_VOID | G_DISCARD); |
|
|
1633 | |
|
|
1634 | FREETMPS; |
|
|
1635 | LEAVE; |
|
|
1636 | } |
|
|
1637 | |
|
|
1638 | if (xs_hook) |
|
|
1639 | xs_hook (); |
|
|
1640 | |
|
|
1641 | return 1; |
|
|
1642 | } |
|
|
1643 | |
|
|
1644 | static int |
|
|
1645 | api_is_ready (pTHX_ SV *coro_sv) |
|
|
1646 | { |
|
|
1647 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1648 | } |
|
|
1649 | |
|
|
1650 | /* expects to own a reference to next->hv */ |
|
|
1651 | INLINE void |
|
|
1652 | prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next) |
|
|
1653 | { |
870 | prev = SvRV (GvSV (coro_current)); |
1654 | SV *prev_sv = SvRV (coro_current); |
871 | next = coro_deq (PRIO_MIN); |
|
|
872 | |
1655 | |
873 | if (!next) |
1656 | ta->prev = SvSTATE_hv (prev_sv); |
874 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
1657 | ta->next = next; |
875 | |
1658 | |
876 | /* free this only after the transfer */ |
1659 | TRANSFER_CHECK (*ta); |
|
|
1660 | |
|
|
1661 | SvRV_set (coro_current, (SV *)next->hv); |
|
|
1662 | |
|
|
1663 | free_coro_mortal (aTHX); |
877 | coro_mortal = prev; |
1664 | coro_mortal = prev_sv; |
878 | SV_CORO (prev, "Coro::schedule"); |
|
|
879 | |
|
|
880 | SvRV (GvSV (coro_current)) = next; |
|
|
881 | |
|
|
882 | SV_CORO (next, "Coro::schedule"); |
|
|
883 | |
|
|
884 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
|
|
885 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
886 | } |
1665 | } |
887 | |
1666 | |
888 | static void |
1667 | static void |
889 | api_cede (void) |
1668 | prepare_schedule (pTHX_ struct coro_transfer_args *ta) |
890 | { |
1669 | { |
891 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
1670 | for (;;) |
|
|
1671 | { |
|
|
1672 | SV *next_sv = coro_deq (aTHX); |
892 | |
1673 | |
|
|
1674 | if (expect_true (next_sv)) |
|
|
1675 | { |
|
|
1676 | struct coro *next = SvSTATE_hv (next_sv); |
|
|
1677 | |
|
|
1678 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1679 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1680 | SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */ |
|
|
1681 | else |
|
|
1682 | { |
|
|
1683 | next->flags &= ~CF_READY; |
|
|
1684 | --coro_nready; |
|
|
1685 | |
|
|
1686 | prepare_schedule_to (aTHX_ ta, next); |
|
|
1687 | break; |
|
|
1688 | } |
|
|
1689 | } |
|
|
1690 | else |
|
|
1691 | { |
|
|
1692 | /* nothing to schedule: call the idle handler */ |
|
|
1693 | if (SvROK (sv_idle) |
|
|
1694 | && SvOBJECT (SvRV (sv_idle))) |
|
|
1695 | { |
|
|
1696 | ++coro_nready; /* hack so that api_ready doesn't invoke ready hook */ |
|
|
1697 | api_ready (aTHX_ SvRV (sv_idle)); |
|
|
1698 | --coro_nready; |
|
|
1699 | } |
|
|
1700 | else |
|
|
1701 | { |
|
|
1702 | dSP; |
|
|
1703 | |
|
|
1704 | ENTER; |
|
|
1705 | SAVETMPS; |
|
|
1706 | |
|
|
1707 | PUSHMARK (SP); |
|
|
1708 | PUTBACK; |
|
|
1709 | call_sv (sv_idle, G_VOID | G_DISCARD); |
|
|
1710 | |
|
|
1711 | FREETMPS; |
|
|
1712 | LEAVE; |
|
|
1713 | } |
|
|
1714 | } |
|
|
1715 | } |
|
|
1716 | } |
|
|
1717 | |
|
|
1718 | INLINE void |
|
|
1719 | prepare_cede (pTHX_ struct coro_transfer_args *ta) |
|
|
1720 | { |
|
|
1721 | api_ready (aTHX_ coro_current); |
|
|
1722 | prepare_schedule (aTHX_ ta); |
|
|
1723 | } |
|
|
1724 | |
|
|
1725 | INLINE void |
|
|
1726 | prepare_cede_notself (pTHX_ struct coro_transfer_args *ta) |
|
|
1727 | { |
|
|
1728 | SV *prev = SvRV (coro_current); |
|
|
1729 | |
|
|
1730 | if (coro_nready) |
|
|
1731 | { |
|
|
1732 | prepare_schedule (aTHX_ ta); |
|
|
1733 | api_ready (aTHX_ prev); |
|
|
1734 | } |
|
|
1735 | else |
|
|
1736 | prepare_nop (aTHX_ ta); |
|
|
1737 | } |
|
|
1738 | |
|
|
1739 | static void |
893 | api_schedule (); |
1740 | api_schedule (pTHX) |
894 | } |
1741 | { |
|
|
1742 | struct coro_transfer_args ta; |
895 | |
1743 | |
|
|
1744 | prepare_schedule (aTHX_ &ta); |
|
|
1745 | TRANSFER (ta, 1); |
|
|
1746 | } |
|
|
1747 | |
|
|
1748 | static void |
|
|
1749 | api_schedule_to (pTHX_ SV *coro_sv) |
|
|
1750 | { |
|
|
1751 | struct coro_transfer_args ta; |
|
|
1752 | struct coro *next = SvSTATE (coro_sv); |
|
|
1753 | |
|
|
1754 | SvREFCNT_inc_NN (coro_sv); |
|
|
1755 | prepare_schedule_to (aTHX_ &ta, next); |
|
|
1756 | } |
|
|
1757 | |
|
|
1758 | static int |
|
|
1759 | api_cede (pTHX) |
|
|
1760 | { |
|
|
1761 | struct coro_transfer_args ta; |
|
|
1762 | |
|
|
1763 | prepare_cede (aTHX_ &ta); |
|
|
1764 | |
|
|
1765 | if (expect_true (ta.prev != ta.next)) |
|
|
1766 | { |
|
|
1767 | TRANSFER (ta, 1); |
|
|
1768 | return 1; |
|
|
1769 | } |
|
|
1770 | else |
|
|
1771 | return 0; |
|
|
1772 | } |
|
|
1773 | |
|
|
1774 | static int |
|
|
1775 | api_cede_notself (pTHX) |
|
|
1776 | { |
|
|
1777 | if (coro_nready) |
|
|
1778 | { |
|
|
1779 | struct coro_transfer_args ta; |
|
|
1780 | |
|
|
1781 | prepare_cede_notself (aTHX_ &ta); |
|
|
1782 | TRANSFER (ta, 1); |
|
|
1783 | return 1; |
|
|
1784 | } |
|
|
1785 | else |
|
|
1786 | return 0; |
|
|
1787 | } |
|
|
1788 | |
|
|
1789 | static void |
|
|
1790 | api_trace (pTHX_ SV *coro_sv, int flags) |
|
|
1791 | { |
|
|
1792 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1793 | |
|
|
1794 | if (coro->flags & CF_RUNNING) |
|
|
1795 | croak ("cannot enable tracing on a running coroutine, caught"); |
|
|
1796 | |
|
|
1797 | if (flags & CC_TRACE) |
|
|
1798 | { |
|
|
1799 | if (!coro->cctx) |
|
|
1800 | coro->cctx = cctx_new_run (); |
|
|
1801 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1802 | croak ("cannot enable tracing on coroutine with custom stack, caught"); |
|
|
1803 | |
|
|
1804 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1805 | } |
|
|
1806 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1807 | { |
|
|
1808 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1809 | |
|
|
1810 | if (coro->flags & CF_RUNNING) |
|
|
1811 | PL_runops = RUNOPS_DEFAULT; |
|
|
1812 | else |
|
|
1813 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1814 | } |
|
|
1815 | } |
|
|
1816 | |
|
|
1817 | static void |
|
|
1818 | coro_call_on_destroy (pTHX_ struct coro *coro) |
|
|
1819 | { |
|
|
1820 | SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0); |
|
|
1821 | SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0); |
|
|
1822 | |
|
|
1823 | if (on_destroyp) |
|
|
1824 | { |
|
|
1825 | AV *on_destroy = (AV *)SvRV (*on_destroyp); |
|
|
1826 | |
|
|
1827 | while (AvFILLp (on_destroy) >= 0) |
|
|
1828 | { |
|
|
1829 | dSP; /* don't disturb outer sp */ |
|
|
1830 | SV *cb = av_pop (on_destroy); |
|
|
1831 | |
|
|
1832 | PUSHMARK (SP); |
|
|
1833 | |
|
|
1834 | if (statusp) |
|
|
1835 | { |
|
|
1836 | int i; |
|
|
1837 | AV *status = (AV *)SvRV (*statusp); |
|
|
1838 | EXTEND (SP, AvFILLp (status) + 1); |
|
|
1839 | |
|
|
1840 | for (i = 0; i <= AvFILLp (status); ++i) |
|
|
1841 | PUSHs (AvARRAY (status)[i]); |
|
|
1842 | } |
|
|
1843 | |
|
|
1844 | PUTBACK; |
|
|
1845 | call_sv (sv_2mortal (cb), G_VOID | G_DISCARD); |
|
|
1846 | } |
|
|
1847 | } |
|
|
1848 | } |
|
|
1849 | |
|
|
1850 | static void |
|
|
1851 | slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1852 | { |
|
|
1853 | int i; |
|
|
1854 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1855 | AV *av = newAV (); |
|
|
1856 | |
|
|
1857 | av_extend (av, items - 1); |
|
|
1858 | for (i = 0; i < items; ++i) |
|
|
1859 | av_push (av, SvREFCNT_inc_NN (arg [i])); |
|
|
1860 | |
|
|
1861 | hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0); |
|
|
1862 | |
|
|
1863 | av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */ |
|
|
1864 | api_ready (aTHX_ sv_manager); |
|
|
1865 | |
|
|
1866 | frame->prepare = prepare_schedule; |
|
|
1867 | frame->check = slf_check_repeat; |
|
|
1868 | } |
|
|
1869 | |
|
|
1870 | /*****************************************************************************/ |
|
|
1871 | /* async pool handler */ |
|
|
1872 | |
|
|
1873 | static int |
|
|
1874 | slf_check_pool_handler (pTHX_ struct CoroSLF *frame) |
|
|
1875 | { |
|
|
1876 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1877 | struct coro *coro = (struct coro *)frame->data; |
|
|
1878 | |
|
|
1879 | if (!coro->invoke_cb) |
|
|
1880 | return 1; /* loop till we have invoke */ |
|
|
1881 | else |
|
|
1882 | { |
|
|
1883 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
1884 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
1885 | |
|
|
1886 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
1887 | |
|
|
1888 | { |
|
|
1889 | dSP; |
|
|
1890 | XPUSHs (sv_2mortal (coro->invoke_cb)); coro->invoke_cb = 0; |
|
|
1891 | PUTBACK; |
|
|
1892 | } |
|
|
1893 | |
|
|
1894 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
1895 | GvAV (PL_defgv) = coro->invoke_av; |
|
|
1896 | coro->invoke_av = 0; |
|
|
1897 | |
|
|
1898 | return 0; |
|
|
1899 | } |
|
|
1900 | } |
|
|
1901 | |
|
|
1902 | static void |
|
|
1903 | slf_init_pool_handler (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
1904 | { |
|
|
1905 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1906 | struct coro *coro = SvSTATE_hv ((SV *)hv); |
|
|
1907 | |
|
|
1908 | if (expect_true (coro->saved_deffh)) |
|
|
1909 | { |
|
|
1910 | /* subsequent iteration */ |
|
|
1911 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
1912 | coro->saved_deffh = 0; |
|
|
1913 | |
|
|
1914 | if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss) |
|
|
1915 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
1916 | { |
|
|
1917 | coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate); |
|
|
1918 | coro->invoke_av = newAV (); |
|
|
1919 | |
|
|
1920 | frame->prepare = prepare_nop; |
|
|
1921 | } |
|
|
1922 | else |
|
|
1923 | { |
|
|
1924 | av_clear (GvAV (PL_defgv)); |
|
|
1925 | hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0); |
|
|
1926 | |
|
|
1927 | coro->prio = 0; |
|
|
1928 | |
|
|
1929 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
1930 | api_trace (aTHX_ coro_current, 0); |
|
|
1931 | |
|
|
1932 | frame->prepare = prepare_schedule; |
|
|
1933 | av_push (av_async_pool, SvREFCNT_inc (hv)); |
|
|
1934 | } |
|
|
1935 | } |
|
|
1936 | else |
|
|
1937 | { |
|
|
1938 | /* first iteration, simply fall through */ |
|
|
1939 | frame->prepare = prepare_nop; |
|
|
1940 | } |
|
|
1941 | |
|
|
1942 | frame->check = slf_check_pool_handler; |
|
|
1943 | frame->data = (void *)coro; |
|
|
1944 | } |
|
|
1945 | |
|
|
1946 | /*****************************************************************************/ |
|
|
1947 | /* rouse callback */ |
|
|
1948 | |
|
|
1949 | #define CORO_MAGIC_type_rouse PERL_MAGIC_ext |
|
|
1950 | |
|
|
1951 | static void |
|
|
1952 | coro_rouse_callback (pTHX_ CV *cv) |
|
|
1953 | { |
|
|
1954 | dXSARGS; |
|
|
1955 | SV *data = (SV *)GENSUB_ARG; |
|
|
1956 | |
|
|
1957 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1958 | { |
|
|
1959 | /* first call, set args */ |
|
|
1960 | AV *av = newAV (); |
|
|
1961 | SV *coro = SvRV (data); |
|
|
1962 | |
|
|
1963 | SvRV_set (data, (SV *)av); |
|
|
1964 | api_ready (aTHX_ coro); |
|
|
1965 | SvREFCNT_dec (coro); |
|
|
1966 | |
|
|
1967 | /* better take a full copy of the arguments */ |
|
|
1968 | while (items--) |
|
|
1969 | av_store (av, items, newSVsv (ST (items))); |
|
|
1970 | } |
|
|
1971 | |
|
|
1972 | XSRETURN_EMPTY; |
|
|
1973 | } |
|
|
1974 | |
|
|
1975 | static int |
|
|
1976 | slf_check_rouse_wait (pTHX_ struct CoroSLF *frame) |
|
|
1977 | { |
|
|
1978 | SV *data = (SV *)frame->data; |
|
|
1979 | |
|
|
1980 | if (CORO_THROW) |
|
|
1981 | return 0; |
|
|
1982 | |
|
|
1983 | if (SvTYPE (SvRV (data)) != SVt_PVAV) |
|
|
1984 | return 1; |
|
|
1985 | |
|
|
1986 | /* now push all results on the stack */ |
|
|
1987 | { |
|
|
1988 | dSP; |
|
|
1989 | AV *av = (AV *)SvRV (data); |
|
|
1990 | int i; |
|
|
1991 | |
|
|
1992 | EXTEND (SP, AvFILLp (av) + 1); |
|
|
1993 | for (i = 0; i <= AvFILLp (av); ++i) |
|
|
1994 | PUSHs (sv_2mortal (AvARRAY (av)[i])); |
|
|
1995 | |
|
|
1996 | /* we have stolen the elements, so ste length to zero and free */ |
|
|
1997 | AvFILLp (av) = -1; |
|
|
1998 | av_undef (av); |
|
|
1999 | |
|
|
2000 | PUTBACK; |
|
|
2001 | } |
|
|
2002 | |
|
|
2003 | return 0; |
|
|
2004 | } |
|
|
2005 | |
|
|
2006 | static void |
|
|
2007 | slf_init_rouse_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2008 | { |
|
|
2009 | SV *cb; |
|
|
2010 | |
|
|
2011 | if (items) |
|
|
2012 | cb = arg [0]; |
|
|
2013 | else |
|
|
2014 | { |
|
|
2015 | struct coro *coro = SvSTATE_current; |
|
|
2016 | |
|
|
2017 | if (!coro->rouse_cb) |
|
|
2018 | croak ("Coro::rouse_wait called without rouse callback, and no default rouse callback found either,"); |
|
|
2019 | |
|
|
2020 | cb = sv_2mortal (coro->rouse_cb); |
|
|
2021 | coro->rouse_cb = 0; |
|
|
2022 | } |
|
|
2023 | |
|
|
2024 | if (!SvROK (cb) |
|
|
2025 | || SvTYPE (SvRV (cb)) != SVt_PVCV |
|
|
2026 | || CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback) |
|
|
2027 | croak ("Coro::rouse_wait called with illegal callback argument,"); |
|
|
2028 | |
|
|
2029 | { |
|
|
2030 | CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */ |
|
|
2031 | SV *data = (SV *)GENSUB_ARG; |
|
|
2032 | |
|
|
2033 | frame->data = (void *)data; |
|
|
2034 | frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule; |
|
|
2035 | frame->check = slf_check_rouse_wait; |
|
|
2036 | } |
|
|
2037 | } |
|
|
2038 | |
|
|
2039 | static SV * |
|
|
2040 | coro_new_rouse_cb (pTHX) |
|
|
2041 | { |
|
|
2042 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2043 | struct coro *coro = SvSTATE_hv (hv); |
|
|
2044 | SV *data = newRV_inc ((SV *)hv); |
|
|
2045 | SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data); |
|
|
2046 | |
|
|
2047 | sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0); |
|
|
2048 | SvREFCNT_dec (data); /* magicext increases the refcount */ |
|
|
2049 | |
|
|
2050 | SvREFCNT_dec (coro->rouse_cb); |
|
|
2051 | coro->rouse_cb = SvREFCNT_inc_NN (cb); |
|
|
2052 | |
|
|
2053 | return cb; |
|
|
2054 | } |
|
|
2055 | |
|
|
2056 | /*****************************************************************************/ |
|
|
2057 | /* schedule-like-function opcode (SLF) */ |
|
|
2058 | |
|
|
2059 | static UNOP slf_restore; /* restore stack as entersub did, for first-re-run */ |
|
|
2060 | static const CV *slf_cv; |
|
|
2061 | static SV **slf_argv; |
|
|
2062 | static int slf_argc, slf_arga; /* count, allocated */ |
|
|
2063 | static I32 slf_ax; /* top of stack, for restore */ |
|
|
2064 | |
|
|
2065 | /* this restores the stack in the case we patched the entersub, to */ |
|
|
2066 | /* recreate the stack frame as perl will on following calls */ |
|
|
2067 | /* since entersub cleared the stack */ |
|
|
2068 | static OP * |
|
|
2069 | pp_restore (pTHX) |
|
|
2070 | { |
|
|
2071 | int i; |
|
|
2072 | SV **SP = PL_stack_base + slf_ax; |
|
|
2073 | |
|
|
2074 | PUSHMARK (SP); |
|
|
2075 | |
|
|
2076 | EXTEND (SP, slf_argc + 1); |
|
|
2077 | |
|
|
2078 | for (i = 0; i < slf_argc; ++i) |
|
|
2079 | PUSHs (sv_2mortal (slf_argv [i])); |
|
|
2080 | |
|
|
2081 | PUSHs ((SV *)CvGV (slf_cv)); |
|
|
2082 | |
|
|
2083 | RETURNOP (slf_restore.op_first); |
|
|
2084 | } |
|
|
2085 | |
|
|
2086 | static void |
|
|
2087 | slf_prepare_transfer (pTHX_ struct coro_transfer_args *ta) |
|
|
2088 | { |
|
|
2089 | SV **arg = (SV **)slf_frame.data; |
|
|
2090 | |
|
|
2091 | prepare_transfer (aTHX_ ta, arg [0], arg [1]); |
|
|
2092 | } |
|
|
2093 | |
|
|
2094 | static void |
|
|
2095 | slf_init_transfer (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2096 | { |
|
|
2097 | if (items != 2) |
|
|
2098 | croak ("Coro::State::transfer (prev, next) expects two arguments, not %d,", items); |
|
|
2099 | |
|
|
2100 | frame->prepare = slf_prepare_transfer; |
|
|
2101 | frame->check = slf_check_nop; |
|
|
2102 | frame->data = (void *)arg; /* let's hope it will stay valid */ |
|
|
2103 | } |
|
|
2104 | |
|
|
2105 | static void |
|
|
2106 | slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2107 | { |
|
|
2108 | frame->prepare = prepare_schedule; |
|
|
2109 | frame->check = slf_check_nop; |
|
|
2110 | } |
|
|
2111 | |
|
|
2112 | static void |
|
|
2113 | slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta) |
|
|
2114 | { |
|
|
2115 | struct coro *next = (struct coro *)slf_frame.data; |
|
|
2116 | |
|
|
2117 | SvREFCNT_inc_NN (next->hv); |
|
|
2118 | prepare_schedule_to (aTHX_ ta, next); |
|
|
2119 | } |
|
|
2120 | |
|
|
2121 | static void |
|
|
2122 | slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2123 | { |
|
|
2124 | if (!items) |
|
|
2125 | croak ("Coro::schedule_to expects a coroutine argument, caught"); |
|
|
2126 | |
|
|
2127 | frame->data = (void *)SvSTATE (arg [0]); |
|
|
2128 | frame->prepare = slf_prepare_schedule_to; |
|
|
2129 | frame->check = slf_check_nop; |
|
|
2130 | } |
|
|
2131 | |
|
|
2132 | static void |
|
|
2133 | slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2134 | { |
|
|
2135 | api_ready (aTHX_ SvRV (coro_current)); |
|
|
2136 | |
|
|
2137 | slf_init_schedule_to (aTHX_ frame, cv, arg, items); |
|
|
2138 | } |
|
|
2139 | |
|
|
2140 | static void |
|
|
2141 | slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2142 | { |
|
|
2143 | frame->prepare = prepare_cede; |
|
|
2144 | frame->check = slf_check_nop; |
|
|
2145 | } |
|
|
2146 | |
|
|
2147 | static void |
|
|
2148 | slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2149 | { |
|
|
2150 | frame->prepare = prepare_cede_notself; |
|
|
2151 | frame->check = slf_check_nop; |
|
|
2152 | } |
|
|
2153 | |
|
|
2154 | /* |
|
|
2155 | * these not obviously related functions are all rolled into one |
|
|
2156 | * function to increase chances that they all will call transfer with the same |
|
|
2157 | * stack offset |
|
|
2158 | * SLF stands for "schedule-like-function". |
|
|
2159 | */ |
|
|
2160 | static OP * |
|
|
2161 | pp_slf (pTHX) |
|
|
2162 | { |
|
|
2163 | I32 checkmark; /* mark SP to see how many elements check has pushed */ |
|
|
2164 | |
|
|
2165 | /* set up the slf frame, unless it has already been set-up */ |
|
|
2166 | /* the latter happens when a new coro has been started */ |
|
|
2167 | /* or when a new cctx was attached to an existing coroutine */ |
|
|
2168 | if (expect_true (!slf_frame.prepare)) |
|
|
2169 | { |
|
|
2170 | /* first iteration */ |
|
|
2171 | dSP; |
|
|
2172 | SV **arg = PL_stack_base + TOPMARK + 1; |
|
|
2173 | int items = SP - arg; /* args without function object */ |
|
|
2174 | SV *gv = *sp; |
|
|
2175 | |
|
|
2176 | /* do a quick consistency check on the "function" object, and if it isn't */ |
|
|
2177 | /* for us, divert to the real entersub */ |
|
|
2178 | if (SvTYPE (gv) != SVt_PVGV |
|
|
2179 | || !GvCV (gv) |
|
|
2180 | || !(CvFLAGS (GvCV (gv)) & CVf_SLF)) |
|
|
2181 | return PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
2182 | |
|
|
2183 | if (!(PL_op->op_flags & OPf_STACKED)) |
|
|
2184 | { |
|
|
2185 | /* ampersand-form of call, use @_ instead of stack */ |
|
|
2186 | AV *av = GvAV (PL_defgv); |
|
|
2187 | arg = AvARRAY (av); |
|
|
2188 | items = AvFILLp (av) + 1; |
|
|
2189 | } |
|
|
2190 | |
|
|
2191 | /* now call the init function, which needs to set up slf_frame */ |
|
|
2192 | ((coro_slf_cb)CvXSUBANY (GvCV (gv)).any_ptr) |
|
|
2193 | (aTHX_ &slf_frame, GvCV (gv), arg, items); |
|
|
2194 | |
|
|
2195 | /* pop args */ |
|
|
2196 | SP = PL_stack_base + POPMARK; |
|
|
2197 | |
|
|
2198 | PUTBACK; |
|
|
2199 | } |
|
|
2200 | |
|
|
2201 | /* now that we have a slf_frame, interpret it! */ |
|
|
2202 | /* we use a callback system not to make the code needlessly */ |
|
|
2203 | /* complicated, but so we can run multiple perl coros from one cctx */ |
|
|
2204 | |
|
|
2205 | do |
|
|
2206 | { |
|
|
2207 | struct coro_transfer_args ta; |
|
|
2208 | |
|
|
2209 | slf_frame.prepare (aTHX_ &ta); |
|
|
2210 | TRANSFER (ta, 0); |
|
|
2211 | |
|
|
2212 | checkmark = PL_stack_sp - PL_stack_base; |
|
|
2213 | } |
|
|
2214 | while (slf_frame.check (aTHX_ &slf_frame)); |
|
|
2215 | |
|
|
2216 | slf_frame.prepare = 0; /* invalidate the frame, we are done processing it */ |
|
|
2217 | |
|
|
2218 | /* exception handling */ |
|
|
2219 | if (expect_false (CORO_THROW)) |
|
|
2220 | { |
|
|
2221 | SV *exception = sv_2mortal (CORO_THROW); |
|
|
2222 | |
|
|
2223 | CORO_THROW = 0; |
|
|
2224 | sv_setsv (ERRSV, exception); |
|
|
2225 | croak (0); |
|
|
2226 | } |
|
|
2227 | |
|
|
2228 | /* return value handling - mostly like entersub */ |
|
|
2229 | /* make sure we put something on the stack in scalar context */ |
|
|
2230 | if (GIMME_V == G_SCALAR) |
|
|
2231 | { |
|
|
2232 | dSP; |
|
|
2233 | SV **bot = PL_stack_base + checkmark; |
|
|
2234 | |
|
|
2235 | if (sp == bot) /* too few, push undef */ |
|
|
2236 | bot [1] = &PL_sv_undef; |
|
|
2237 | else if (sp != bot + 1) /* too many, take last one */ |
|
|
2238 | bot [1] = *sp; |
|
|
2239 | |
|
|
2240 | SP = bot + 1; |
|
|
2241 | |
|
|
2242 | PUTBACK; |
|
|
2243 | } |
|
|
2244 | |
|
|
2245 | return NORMAL; |
|
|
2246 | } |
|
|
2247 | |
|
|
2248 | static void |
|
|
2249 | api_execute_slf (pTHX_ CV *cv, coro_slf_cb init_cb, I32 ax) |
|
|
2250 | { |
|
|
2251 | int i; |
|
|
2252 | SV **arg = PL_stack_base + ax; |
|
|
2253 | int items = PL_stack_sp - arg + 1; |
|
|
2254 | |
|
|
2255 | assert (("FATAL: SLF call with illegal CV value", !CvANON (cv))); |
|
|
2256 | |
|
|
2257 | if (PL_op->op_ppaddr != PL_ppaddr [OP_ENTERSUB] |
|
|
2258 | && PL_op->op_ppaddr != pp_slf) |
|
|
2259 | croak ("FATAL: Coro SLF calls can only be made normally, not via goto or any other means, caught"); |
|
|
2260 | |
|
|
2261 | CvFLAGS (cv) |= CVf_SLF; |
|
|
2262 | CvXSUBANY (cv).any_ptr = (void *)init_cb; |
|
|
2263 | slf_cv = cv; |
|
|
2264 | |
|
|
2265 | /* we patch the op, and then re-run the whole call */ |
|
|
2266 | /* we have to put the same argument on the stack for this to work */ |
|
|
2267 | /* and this will be done by pp_restore */ |
|
|
2268 | slf_restore.op_next = (OP *)&slf_restore; |
|
|
2269 | slf_restore.op_type = OP_CUSTOM; |
|
|
2270 | slf_restore.op_ppaddr = pp_restore; |
|
|
2271 | slf_restore.op_first = PL_op; |
|
|
2272 | |
|
|
2273 | slf_ax = ax - 1; /* undo the ax++ inside dAXMARK */ |
|
|
2274 | |
|
|
2275 | if (PL_op->op_flags & OPf_STACKED) |
|
|
2276 | { |
|
|
2277 | if (items > slf_arga) |
|
|
2278 | { |
|
|
2279 | slf_arga = items; |
|
|
2280 | free (slf_argv); |
|
|
2281 | slf_argv = malloc (slf_arga * sizeof (SV *)); |
|
|
2282 | } |
|
|
2283 | |
|
|
2284 | slf_argc = items; |
|
|
2285 | |
|
|
2286 | for (i = 0; i < items; ++i) |
|
|
2287 | slf_argv [i] = SvREFCNT_inc (arg [i]); |
|
|
2288 | } |
|
|
2289 | else |
|
|
2290 | slf_argc = 0; |
|
|
2291 | |
|
|
2292 | PL_op->op_ppaddr = pp_slf; |
|
|
2293 | /*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */ |
|
|
2294 | |
|
|
2295 | PL_op = (OP *)&slf_restore; |
|
|
2296 | } |
|
|
2297 | |
|
|
2298 | /*****************************************************************************/ |
|
|
2299 | /* PerlIO::cede */ |
|
|
2300 | |
|
|
2301 | typedef struct |
|
|
2302 | { |
|
|
2303 | PerlIOBuf base; |
|
|
2304 | NV next, every; |
|
|
2305 | } PerlIOCede; |
|
|
2306 | |
|
|
2307 | static IV |
|
|
2308 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
2309 | { |
|
|
2310 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2311 | |
|
|
2312 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
2313 | self->next = nvtime () + self->every; |
|
|
2314 | |
|
|
2315 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
2316 | } |
|
|
2317 | |
|
|
2318 | static SV * |
|
|
2319 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
2320 | { |
|
|
2321 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2322 | |
|
|
2323 | return newSVnv (self->every); |
|
|
2324 | } |
|
|
2325 | |
|
|
2326 | static IV |
|
|
2327 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
2328 | { |
|
|
2329 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
2330 | double now = nvtime (); |
|
|
2331 | |
|
|
2332 | if (now >= self->next) |
|
|
2333 | { |
|
|
2334 | api_cede (aTHX); |
|
|
2335 | self->next = now + self->every; |
|
|
2336 | } |
|
|
2337 | |
|
|
2338 | return PerlIOBuf_flush (aTHX_ f); |
|
|
2339 | } |
|
|
2340 | |
|
|
2341 | static PerlIO_funcs PerlIO_cede = |
|
|
2342 | { |
|
|
2343 | sizeof(PerlIO_funcs), |
|
|
2344 | "cede", |
|
|
2345 | sizeof(PerlIOCede), |
|
|
2346 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
2347 | PerlIOCede_pushed, |
|
|
2348 | PerlIOBuf_popped, |
|
|
2349 | PerlIOBuf_open, |
|
|
2350 | PerlIOBase_binmode, |
|
|
2351 | PerlIOCede_getarg, |
|
|
2352 | PerlIOBase_fileno, |
|
|
2353 | PerlIOBuf_dup, |
|
|
2354 | PerlIOBuf_read, |
|
|
2355 | PerlIOBuf_unread, |
|
|
2356 | PerlIOBuf_write, |
|
|
2357 | PerlIOBuf_seek, |
|
|
2358 | PerlIOBuf_tell, |
|
|
2359 | PerlIOBuf_close, |
|
|
2360 | PerlIOCede_flush, |
|
|
2361 | PerlIOBuf_fill, |
|
|
2362 | PerlIOBase_eof, |
|
|
2363 | PerlIOBase_error, |
|
|
2364 | PerlIOBase_clearerr, |
|
|
2365 | PerlIOBase_setlinebuf, |
|
|
2366 | PerlIOBuf_get_base, |
|
|
2367 | PerlIOBuf_bufsiz, |
|
|
2368 | PerlIOBuf_get_ptr, |
|
|
2369 | PerlIOBuf_get_cnt, |
|
|
2370 | PerlIOBuf_set_ptrcnt, |
|
|
2371 | }; |
|
|
2372 | |
|
|
2373 | /*****************************************************************************/ |
|
|
2374 | /* Coro::Semaphore & Coro::Signal */ |
|
|
2375 | |
|
|
2376 | static SV * |
|
|
2377 | coro_waitarray_new (pTHX_ int count) |
|
|
2378 | { |
|
|
2379 | /* a semaphore contains a counter IV in $sem->[0] and any waiters after that */ |
|
|
2380 | AV *av = newAV (); |
|
|
2381 | SV **ary; |
|
|
2382 | |
|
|
2383 | /* unfortunately, building manually saves memory */ |
|
|
2384 | Newx (ary, 2, SV *); |
|
|
2385 | AvALLOC (av) = ary; |
|
|
2386 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
2387 | AvARRAY (av) = ary; |
|
|
2388 | #else |
|
|
2389 | /* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */ |
|
|
2390 | /* -DDEBUGGING flags this as a bug, despite it perfectly working */ |
|
|
2391 | SvPVX ((SV *)av) = (char *)ary; |
|
|
2392 | #endif |
|
|
2393 | AvMAX (av) = 1; |
|
|
2394 | AvFILLp (av) = 0; |
|
|
2395 | ary [0] = newSViv (count); |
|
|
2396 | |
|
|
2397 | return newRV_noinc ((SV *)av); |
|
|
2398 | } |
|
|
2399 | |
|
|
2400 | /* semaphore */ |
|
|
2401 | |
|
|
2402 | static void |
|
|
2403 | coro_semaphore_adjust (pTHX_ AV *av, IV adjust) |
|
|
2404 | { |
|
|
2405 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2406 | IV count = SvIVX (count_sv); |
|
|
2407 | |
|
|
2408 | count += adjust; |
|
|
2409 | SvIVX (count_sv) = count; |
|
|
2410 | |
|
|
2411 | /* now wake up as many waiters as are expected to lock */ |
|
|
2412 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2413 | { |
|
|
2414 | SV *cb; |
|
|
2415 | |
|
|
2416 | /* swap first two elements so we can shift a waiter */ |
|
|
2417 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2418 | AvARRAY (av)[1] = count_sv; |
|
|
2419 | cb = av_shift (av); |
|
|
2420 | |
|
|
2421 | if (SvOBJECT (cb)) |
|
|
2422 | { |
|
|
2423 | api_ready (aTHX_ cb); |
|
|
2424 | --count; |
|
|
2425 | } |
|
|
2426 | else if (SvTYPE (cb) == SVt_PVCV) |
|
|
2427 | { |
|
|
2428 | dSP; |
|
|
2429 | PUSHMARK (SP); |
|
|
2430 | XPUSHs (sv_2mortal (newRV_inc ((SV *)av))); |
|
|
2431 | PUTBACK; |
|
|
2432 | call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR); |
|
|
2433 | } |
|
|
2434 | |
|
|
2435 | SvREFCNT_dec (cb); |
|
|
2436 | } |
|
|
2437 | } |
|
|
2438 | |
|
|
2439 | static void |
|
|
2440 | coro_semaphore_on_destroy (pTHX_ struct coro *coro) |
|
|
2441 | { |
|
|
2442 | /* call $sem->adjust (0) to possibly wake up some other waiters */ |
|
|
2443 | coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0); |
|
|
2444 | } |
|
|
2445 | |
|
|
2446 | static int |
|
|
2447 | slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire) |
|
|
2448 | { |
|
|
2449 | AV *av = (AV *)frame->data; |
|
|
2450 | SV *count_sv = AvARRAY (av)[0]; |
|
|
2451 | |
|
|
2452 | /* if we are about to throw, don't actually acquire the lock, just throw */ |
|
|
2453 | if (CORO_THROW) |
|
|
2454 | return 0; |
|
|
2455 | else if (SvIVX (count_sv) > 0) |
|
|
2456 | { |
|
|
2457 | SvSTATE_current->on_destroy = 0; |
|
|
2458 | |
|
|
2459 | if (acquire) |
|
|
2460 | SvIVX (count_sv) = SvIVX (count_sv) - 1; |
|
|
2461 | else |
|
|
2462 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2463 | |
|
|
2464 | return 0; |
|
|
2465 | } |
|
|
2466 | else |
|
|
2467 | { |
|
|
2468 | int i; |
|
|
2469 | /* if we were woken up but can't down, we look through the whole */ |
|
|
2470 | /* waiters list and only add us if we aren't in there already */ |
|
|
2471 | /* this avoids some degenerate memory usage cases */ |
|
|
2472 | |
|
|
2473 | for (i = 1; i <= AvFILLp (av); ++i) |
|
|
2474 | if (AvARRAY (av)[i] == SvRV (coro_current)) |
|
|
2475 | return 1; |
|
|
2476 | |
|
|
2477 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2478 | return 1; |
|
|
2479 | } |
|
|
2480 | } |
|
|
2481 | |
|
|
2482 | static int |
|
|
2483 | slf_check_semaphore_down (pTHX_ struct CoroSLF *frame) |
|
|
2484 | { |
|
|
2485 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 1); |
|
|
2486 | } |
|
|
2487 | |
|
|
2488 | static int |
|
|
2489 | slf_check_semaphore_wait (pTHX_ struct CoroSLF *frame) |
|
|
2490 | { |
|
|
2491 | return slf_check_semaphore_down_or_wait (aTHX_ frame, 0); |
|
|
2492 | } |
|
|
2493 | |
|
|
2494 | static void |
|
|
2495 | slf_init_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2496 | { |
|
|
2497 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2498 | |
|
|
2499 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2500 | { |
|
|
2501 | frame->data = (void *)av; |
|
|
2502 | frame->prepare = prepare_nop; |
|
|
2503 | } |
|
|
2504 | else |
|
|
2505 | { |
|
|
2506 | av_push (av, SvREFCNT_inc (SvRV (coro_current))); |
|
|
2507 | |
|
|
2508 | frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av)); |
|
|
2509 | frame->prepare = prepare_schedule; |
|
|
2510 | |
|
|
2511 | /* to avoid race conditions when a woken-up coro gets terminated */ |
|
|
2512 | /* we arrange for a temporary on_destroy that calls adjust (0) */ |
|
|
2513 | SvSTATE_current->on_destroy = coro_semaphore_on_destroy; |
|
|
2514 | } |
|
|
2515 | } |
|
|
2516 | |
|
|
2517 | static void |
|
|
2518 | slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2519 | { |
|
|
2520 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2521 | frame->check = slf_check_semaphore_down; |
|
|
2522 | } |
|
|
2523 | |
|
|
2524 | static void |
|
|
2525 | slf_init_semaphore_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2526 | { |
|
|
2527 | if (items >= 2) |
|
|
2528 | { |
|
|
2529 | /* callback form */ |
|
|
2530 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2531 | CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]); |
|
|
2532 | |
|
|
2533 | av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv)); |
|
|
2534 | |
|
|
2535 | if (SvIVX (AvARRAY (av)[0]) > 0) |
|
|
2536 | coro_semaphore_adjust (aTHX_ av, 0); |
|
|
2537 | |
|
|
2538 | frame->prepare = prepare_nop; |
|
|
2539 | frame->check = slf_check_nop; |
|
|
2540 | } |
|
|
2541 | else |
|
|
2542 | { |
|
|
2543 | slf_init_semaphore_down_or_wait (aTHX_ frame, cv, arg, items); |
|
|
2544 | frame->check = slf_check_semaphore_wait; |
|
|
2545 | } |
|
|
2546 | } |
|
|
2547 | |
|
|
2548 | /* signal */ |
|
|
2549 | |
|
|
2550 | static void |
|
|
2551 | coro_signal_wake (pTHX_ AV *av, int count) |
|
|
2552 | { |
|
|
2553 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2554 | |
|
|
2555 | /* now signal count waiters */ |
|
|
2556 | while (count > 0 && AvFILLp (av) > 0) |
|
|
2557 | { |
|
|
2558 | SV *cb; |
|
|
2559 | |
|
|
2560 | /* swap first two elements so we can shift a waiter */ |
|
|
2561 | cb = AvARRAY (av)[0]; |
|
|
2562 | AvARRAY (av)[0] = AvARRAY (av)[1]; |
|
|
2563 | AvARRAY (av)[1] = cb; |
|
|
2564 | |
|
|
2565 | cb = av_shift (av); |
|
|
2566 | |
|
|
2567 | api_ready (aTHX_ cb); |
|
|
2568 | sv_setiv (cb, 0); /* signal waiter */ |
|
|
2569 | SvREFCNT_dec (cb); |
|
|
2570 | |
|
|
2571 | --count; |
|
|
2572 | } |
|
|
2573 | } |
|
|
2574 | |
|
|
2575 | static int |
|
|
2576 | slf_check_signal_wait (pTHX_ struct CoroSLF *frame) |
|
|
2577 | { |
|
|
2578 | /* if we are about to throw, also stop waiting */ |
|
|
2579 | return SvROK ((SV *)frame->data) && !CORO_THROW; |
|
|
2580 | } |
|
|
2581 | |
|
|
2582 | static void |
|
|
2583 | slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2584 | { |
|
|
2585 | AV *av = (AV *)SvRV (arg [0]); |
|
|
2586 | |
|
|
2587 | if (SvIVX (AvARRAY (av)[0])) |
|
|
2588 | { |
|
|
2589 | SvIVX (AvARRAY (av)[0]) = 0; |
|
|
2590 | frame->prepare = prepare_nop; |
|
|
2591 | frame->check = slf_check_nop; |
|
|
2592 | } |
|
|
2593 | else |
|
|
2594 | { |
|
|
2595 | SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */ |
|
|
2596 | |
|
|
2597 | av_push (av, waiter); |
|
|
2598 | |
|
|
2599 | frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */ |
|
|
2600 | frame->prepare = prepare_schedule; |
|
|
2601 | frame->check = slf_check_signal_wait; |
|
|
2602 | } |
|
|
2603 | } |
|
|
2604 | |
|
|
2605 | /*****************************************************************************/ |
|
|
2606 | /* Coro::AIO */ |
|
|
2607 | |
|
|
2608 | #define CORO_MAGIC_type_aio PERL_MAGIC_ext |
|
|
2609 | |
|
|
2610 | /* helper storage struct */ |
|
|
2611 | struct io_state |
|
|
2612 | { |
|
|
2613 | int errorno; |
|
|
2614 | I32 laststype; /* U16 in 5.10.0 */ |
|
|
2615 | int laststatval; |
|
|
2616 | Stat_t statcache; |
|
|
2617 | }; |
|
|
2618 | |
|
|
2619 | static void |
|
|
2620 | coro_aio_callback (pTHX_ CV *cv) |
|
|
2621 | { |
|
|
2622 | dXSARGS; |
|
|
2623 | AV *state = (AV *)GENSUB_ARG; |
|
|
2624 | SV *coro = av_pop (state); |
|
|
2625 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2626 | |
|
|
2627 | av_extend (state, items - 1); |
|
|
2628 | |
|
|
2629 | sv_upgrade (data_sv, SVt_PV); |
|
|
2630 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2631 | SvPOK_only (data_sv); |
|
|
2632 | |
|
|
2633 | { |
|
|
2634 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2635 | |
|
|
2636 | data->errorno = errno; |
|
|
2637 | data->laststype = PL_laststype; |
|
|
2638 | data->laststatval = PL_laststatval; |
|
|
2639 | data->statcache = PL_statcache; |
|
|
2640 | } |
|
|
2641 | |
|
|
2642 | /* now build the result vector out of all the parameters and the data_sv */ |
|
|
2643 | { |
|
|
2644 | int i; |
|
|
2645 | |
|
|
2646 | for (i = 0; i < items; ++i) |
|
|
2647 | av_push (state, SvREFCNT_inc_NN (ST (i))); |
|
|
2648 | } |
|
|
2649 | |
|
|
2650 | av_push (state, data_sv); |
|
|
2651 | |
|
|
2652 | api_ready (aTHX_ coro); |
|
|
2653 | SvREFCNT_dec (coro); |
|
|
2654 | SvREFCNT_dec ((AV *)state); |
|
|
2655 | } |
|
|
2656 | |
|
|
2657 | static int |
|
|
2658 | slf_check_aio_req (pTHX_ struct CoroSLF *frame) |
|
|
2659 | { |
|
|
2660 | AV *state = (AV *)frame->data; |
|
|
2661 | |
|
|
2662 | /* if we are about to throw, return early */ |
|
|
2663 | /* this does not cancel the aio request, but at least */ |
|
|
2664 | /* it quickly returns */ |
|
|
2665 | if (CORO_THROW) |
|
|
2666 | return 0; |
|
|
2667 | |
|
|
2668 | /* one element that is an RV? repeat! */ |
|
|
2669 | if (AvFILLp (state) == 0 && SvROK (AvARRAY (state)[0])) |
|
|
2670 | return 1; |
|
|
2671 | |
|
|
2672 | /* restore status */ |
|
|
2673 | { |
|
|
2674 | SV *data_sv = av_pop (state); |
|
|
2675 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2676 | |
|
|
2677 | errno = data->errorno; |
|
|
2678 | PL_laststype = data->laststype; |
|
|
2679 | PL_laststatval = data->laststatval; |
|
|
2680 | PL_statcache = data->statcache; |
|
|
2681 | |
|
|
2682 | SvREFCNT_dec (data_sv); |
|
|
2683 | } |
|
|
2684 | |
|
|
2685 | /* push result values */ |
|
|
2686 | { |
|
|
2687 | dSP; |
|
|
2688 | int i; |
|
|
2689 | |
|
|
2690 | EXTEND (SP, AvFILLp (state) + 1); |
|
|
2691 | for (i = 0; i <= AvFILLp (state); ++i) |
|
|
2692 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (state)[i]))); |
|
|
2693 | |
|
|
2694 | PUTBACK; |
|
|
2695 | } |
|
|
2696 | |
|
|
2697 | return 0; |
|
|
2698 | } |
|
|
2699 | |
|
|
2700 | static void |
|
|
2701 | slf_init_aio_req (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items) |
|
|
2702 | { |
|
|
2703 | AV *state = (AV *)sv_2mortal ((SV *)newAV ()); |
|
|
2704 | SV *coro_hv = SvRV (coro_current); |
|
|
2705 | struct coro *coro = SvSTATE_hv (coro_hv); |
|
|
2706 | |
|
|
2707 | /* put our coroutine id on the state arg */ |
|
|
2708 | av_push (state, SvREFCNT_inc_NN (coro_hv)); |
|
|
2709 | |
|
|
2710 | /* first see whether we have a non-zero priority and set it as AIO prio */ |
|
|
2711 | if (coro->prio) |
|
|
2712 | { |
|
|
2713 | dSP; |
|
|
2714 | |
|
|
2715 | static SV *prio_cv; |
|
|
2716 | static SV *prio_sv; |
|
|
2717 | |
|
|
2718 | if (expect_false (!prio_cv)) |
|
|
2719 | { |
|
|
2720 | prio_cv = (SV *)get_cv ("IO::AIO::aioreq_pri", 0); |
|
|
2721 | prio_sv = newSViv (0); |
|
|
2722 | } |
|
|
2723 | |
|
|
2724 | PUSHMARK (SP); |
|
|
2725 | sv_setiv (prio_sv, coro->prio); |
|
|
2726 | XPUSHs (prio_sv); |
|
|
2727 | |
|
|
2728 | PUTBACK; |
|
|
2729 | call_sv (prio_cv, G_VOID | G_DISCARD); |
|
|
2730 | } |
|
|
2731 | |
|
|
2732 | /* now call the original request */ |
|
|
2733 | { |
|
|
2734 | dSP; |
|
|
2735 | CV *req = (CV *)CORO_MAGIC_NN ((SV *)cv, CORO_MAGIC_type_aio)->mg_obj; |
|
|
2736 | int i; |
|
|
2737 | |
|
|
2738 | PUSHMARK (SP); |
|
|
2739 | |
|
|
2740 | /* first push all args to the stack */ |
|
|
2741 | EXTEND (SP, items + 1); |
|
|
2742 | |
|
|
2743 | for (i = 0; i < items; ++i) |
|
|
2744 | PUSHs (arg [i]); |
|
|
2745 | |
|
|
2746 | /* now push the callback closure */ |
|
|
2747 | PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state)))); |
|
|
2748 | |
|
|
2749 | /* now call the AIO function - we assume our request is uncancelable */ |
|
|
2750 | PUTBACK; |
|
|
2751 | call_sv ((SV *)req, G_VOID | G_DISCARD); |
|
|
2752 | } |
|
|
2753 | |
|
|
2754 | /* now that the requets is going, we loop toll we have a result */ |
|
|
2755 | frame->data = (void *)state; |
|
|
2756 | frame->prepare = prepare_schedule; |
|
|
2757 | frame->check = slf_check_aio_req; |
|
|
2758 | } |
|
|
2759 | |
|
|
2760 | static void |
|
|
2761 | coro_aio_req_xs (pTHX_ CV *cv) |
|
|
2762 | { |
|
|
2763 | dXSARGS; |
|
|
2764 | |
|
|
2765 | CORO_EXECUTE_SLF_XS (slf_init_aio_req); |
|
|
2766 | |
|
|
2767 | XSRETURN_EMPTY; |
|
|
2768 | } |
|
|
2769 | |
|
|
2770 | /*****************************************************************************/ |
|
|
2771 | |
|
|
2772 | #if CORO_CLONE |
|
|
2773 | # include "clone.c" |
|
|
2774 | #endif |
|
|
2775 | |
896 | MODULE = Coro::State PACKAGE = Coro::State |
2776 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
897 | |
2777 | |
898 | PROTOTYPES: ENABLE |
2778 | PROTOTYPES: DISABLE |
899 | |
2779 | |
900 | BOOT: |
2780 | BOOT: |
901 | { /* {} necessary for stoopid perl-5.6.x */ |
2781 | { |
902 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2782 | #ifdef USE_ITHREADS |
903 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
2783 | # if CORO_PTHREAD |
|
|
2784 | coro_thx = PERL_GET_CONTEXT; |
|
|
2785 | # endif |
|
|
2786 | #endif |
|
|
2787 | BOOT_PAGESIZE; |
|
|
2788 | |
|
|
2789 | cctx_current = cctx_new_empty (); |
|
|
2790 | |
|
|
2791 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
2792 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
2793 | |
|
|
2794 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
2795 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
2796 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
2797 | |
|
|
2798 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
2799 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
2800 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
2801 | |
904 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
2802 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
905 | |
2803 | |
906 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
2804 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
907 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
2805 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
908 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
2806 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
909 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
2807 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
910 | |
|
|
911 | if (!padlist_cache) |
|
|
912 | padlist_cache = newHV (); |
|
|
913 | |
2808 | |
914 | main_mainstack = PL_mainstack; |
2809 | main_mainstack = PL_mainstack; |
|
|
2810 | main_top_env = PL_top_env; |
915 | |
2811 | |
|
|
2812 | while (main_top_env->je_prev) |
|
|
2813 | main_top_env = main_top_env->je_prev; |
|
|
2814 | |
|
|
2815 | { |
|
|
2816 | SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf))); |
|
|
2817 | |
|
|
2818 | if (!PL_custom_op_names) PL_custom_op_names = newHV (); |
|
|
2819 | hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0); |
|
|
2820 | |
|
|
2821 | if (!PL_custom_op_descs) PL_custom_op_descs = newHV (); |
|
|
2822 | hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0); |
|
|
2823 | } |
|
|
2824 | |
916 | coroapi.ver = CORO_API_VERSION; |
2825 | coroapi.ver = CORO_API_VERSION; |
|
|
2826 | coroapi.rev = CORO_API_REVISION; |
|
|
2827 | |
917 | coroapi.transfer = api_transfer; |
2828 | coroapi.transfer = api_transfer; |
918 | } |
|
|
919 | |
2829 | |
920 | Coro::State |
2830 | coroapi.sv_state = SvSTATE_; |
921 | _newprocess(args) |
2831 | coroapi.execute_slf = api_execute_slf; |
922 | SV * args |
2832 | coroapi.prepare_nop = prepare_nop; |
923 | PROTOTYPE: $ |
2833 | coroapi.prepare_schedule = prepare_schedule; |
|
|
2834 | coroapi.prepare_cede = prepare_cede; |
|
|
2835 | coroapi.prepare_cede_notself = prepare_cede_notself; |
|
|
2836 | |
|
|
2837 | { |
|
|
2838 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
2839 | |
|
|
2840 | if (!svp) croak ("Time::HiRes is required"); |
|
|
2841 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
2842 | |
|
|
2843 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
2844 | } |
|
|
2845 | |
|
|
2846 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
2847 | } |
|
|
2848 | |
|
|
2849 | SV * |
|
|
2850 | new (char *klass, ...) |
|
|
2851 | ALIAS: |
|
|
2852 | Coro::new = 1 |
924 | CODE: |
2853 | CODE: |
925 | Coro__State coro; |
2854 | { |
|
|
2855 | struct coro *coro; |
|
|
2856 | MAGIC *mg; |
|
|
2857 | HV *hv; |
|
|
2858 | CV *cb; |
|
|
2859 | int i; |
926 | |
2860 | |
927 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
2861 | if (items > 1) |
928 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
929 | |
2862 | { |
|
|
2863 | cb = coro_sv_2cv (aTHX_ ST (1)); |
|
|
2864 | |
|
|
2865 | if (!ix) |
|
|
2866 | { |
|
|
2867 | if (CvISXSUB (cb)) |
|
|
2868 | croak ("Coro::State doesn't support XS functions as coroutine start, caught"); |
|
|
2869 | |
|
|
2870 | if (!CvROOT (cb)) |
|
|
2871 | croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught"); |
|
|
2872 | } |
|
|
2873 | } |
|
|
2874 | |
930 | New (0, coro, 1, struct coro); |
2875 | Newz (0, coro, 1, struct coro); |
|
|
2876 | coro->args = newAV (); |
|
|
2877 | coro->flags = CF_NEW; |
931 | |
2878 | |
932 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
2879 | if (coro_first) coro_first->prev = coro; |
933 | coro->mainstack = 0; /* actual work is done inside transfer */ |
2880 | coro->next = coro_first; |
934 | coro->stack = 0; |
2881 | coro_first = coro; |
935 | |
2882 | |
936 | /* same as JMPENV_BOOTSTRAP */ |
2883 | coro->hv = hv = newHV (); |
937 | /* we might be able to recycle start_env, but safe is safe */ |
2884 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
938 | Zero(&coro->start_env, 1, JMPENV); |
2885 | mg->mg_flags |= MGf_DUP; |
939 | coro->start_env.je_ret = -1; |
2886 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
940 | coro->start_env.je_mustcatch = TRUE; |
|
|
941 | |
2887 | |
942 | RETVAL = coro; |
2888 | if (items > 1) |
|
|
2889 | { |
|
|
2890 | av_extend (coro->args, items - 1 + ix - 1); |
|
|
2891 | |
|
|
2892 | if (ix) |
|
|
2893 | { |
|
|
2894 | av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb)); |
|
|
2895 | cb = cv_coro_run; |
|
|
2896 | } |
|
|
2897 | |
|
|
2898 | coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb); |
|
|
2899 | |
|
|
2900 | for (i = 2; i < items; i++) |
|
|
2901 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2902 | } |
|
|
2903 | } |
943 | OUTPUT: |
2904 | OUTPUT: |
944 | RETVAL |
2905 | RETVAL |
945 | |
2906 | |
946 | void |
2907 | void |
947 | transfer(prev, next, flags) |
2908 | transfer (...) |
948 | SV *prev |
|
|
949 | SV *next |
|
|
950 | int flags |
|
|
951 | PROTOTYPE: @ |
2909 | PROTOTYPE: $$ |
952 | CODE: |
2910 | CODE: |
953 | PUTBACK; |
2911 | CORO_EXECUTE_SLF_XS (slf_init_transfer); |
954 | SV_CORO (next, "Coro::transfer"); |
2912 | |
955 | SV_CORO (prev, "Coro::transfer"); |
2913 | bool |
956 | transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
2914 | _destroy (SV *coro_sv) |
957 | SPAGAIN; |
2915 | CODE: |
|
|
2916 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
|
|
2917 | OUTPUT: |
|
|
2918 | RETVAL |
958 | |
2919 | |
959 | void |
2920 | void |
960 | DESTROY(coro) |
2921 | _exit (int code) |
961 | Coro::State coro |
2922 | PROTOTYPE: $ |
962 | CODE: |
2923 | CODE: |
|
|
2924 | _exit (code); |
963 | |
2925 | |
964 | if (coro->mainstack && coro->mainstack != main_mainstack) |
2926 | SV * |
|
|
2927 | clone (Coro::State coro) |
|
|
2928 | CODE: |
|
|
2929 | { |
|
|
2930 | #if CORO_CLONE |
|
|
2931 | struct coro *ncoro = coro_clone (aTHX_ coro); |
|
|
2932 | MAGIC *mg; |
|
|
2933 | /* TODO: too much duplication */ |
|
|
2934 | ncoro->hv = newHV (); |
|
|
2935 | mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0); |
|
|
2936 | mg->mg_flags |= MGf_DUP; |
|
|
2937 | RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv)); |
|
|
2938 | #else |
|
|
2939 | croak ("Coro::State->clone has not been configured into this installation of Coro, realised"); |
|
|
2940 | #endif |
|
|
2941 | } |
|
|
2942 | OUTPUT: |
|
|
2943 | RETVAL |
|
|
2944 | |
|
|
2945 | int |
|
|
2946 | cctx_stacksize (int new_stacksize = 0) |
|
|
2947 | PROTOTYPE: ;$ |
|
|
2948 | CODE: |
|
|
2949 | RETVAL = cctx_stacksize; |
|
|
2950 | if (new_stacksize) |
|
|
2951 | { |
|
|
2952 | cctx_stacksize = new_stacksize; |
|
|
2953 | ++cctx_gen; |
|
|
2954 | } |
|
|
2955 | OUTPUT: |
|
|
2956 | RETVAL |
|
|
2957 | |
|
|
2958 | int |
|
|
2959 | cctx_max_idle (int max_idle = 0) |
|
|
2960 | PROTOTYPE: ;$ |
|
|
2961 | CODE: |
|
|
2962 | RETVAL = cctx_max_idle; |
|
|
2963 | if (max_idle > 1) |
|
|
2964 | cctx_max_idle = max_idle; |
|
|
2965 | OUTPUT: |
|
|
2966 | RETVAL |
|
|
2967 | |
|
|
2968 | int |
|
|
2969 | cctx_count () |
|
|
2970 | PROTOTYPE: |
|
|
2971 | CODE: |
|
|
2972 | RETVAL = cctx_count; |
|
|
2973 | OUTPUT: |
|
|
2974 | RETVAL |
|
|
2975 | |
|
|
2976 | int |
|
|
2977 | cctx_idle () |
|
|
2978 | PROTOTYPE: |
|
|
2979 | CODE: |
|
|
2980 | RETVAL = cctx_idle; |
|
|
2981 | OUTPUT: |
|
|
2982 | RETVAL |
|
|
2983 | |
|
|
2984 | void |
|
|
2985 | list () |
|
|
2986 | PROTOTYPE: |
|
|
2987 | PPCODE: |
|
|
2988 | { |
|
|
2989 | struct coro *coro; |
|
|
2990 | for (coro = coro_first; coro; coro = coro->next) |
|
|
2991 | if (coro->hv) |
|
|
2992 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
2993 | } |
|
|
2994 | |
|
|
2995 | void |
|
|
2996 | call (Coro::State coro, SV *coderef) |
|
|
2997 | ALIAS: |
|
|
2998 | eval = 1 |
|
|
2999 | CODE: |
|
|
3000 | { |
|
|
3001 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
965 | { |
3002 | { |
966 | struct coro temp; |
3003 | struct coro temp; |
967 | |
3004 | |
|
|
3005 | if (!(coro->flags & CF_RUNNING)) |
|
|
3006 | { |
|
|
3007 | PUTBACK; |
|
|
3008 | save_perl (aTHX_ &temp); |
|
|
3009 | load_perl (aTHX_ coro); |
|
|
3010 | } |
|
|
3011 | |
|
|
3012 | { |
|
|
3013 | dSP; |
|
|
3014 | ENTER; |
|
|
3015 | SAVETMPS; |
968 | PUTBACK; |
3016 | PUTBACK; |
969 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
3017 | PUSHSTACK; |
970 | LOAD(aTHX_ coro); |
3018 | PUSHMARK (SP); |
|
|
3019 | |
|
|
3020 | if (ix) |
|
|
3021 | eval_sv (coderef, 0); |
|
|
3022 | else |
|
|
3023 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3024 | |
|
|
3025 | POPSTACK; |
971 | SPAGAIN; |
3026 | SPAGAIN; |
|
|
3027 | FREETMPS; |
|
|
3028 | LEAVE; |
|
|
3029 | PUTBACK; |
|
|
3030 | } |
972 | |
3031 | |
973 | destroy_stacks (aTHX); |
3032 | if (!(coro->flags & CF_RUNNING)) |
974 | |
3033 | { |
975 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
3034 | save_perl (aTHX_ coro); |
|
|
3035 | load_perl (aTHX_ &temp); |
976 | SPAGAIN; |
3036 | SPAGAIN; |
977 | |
3037 | } |
978 | coro->mainstack = 0; |
|
|
979 | } |
3038 | } |
|
|
3039 | } |
980 | |
3040 | |
981 | deallocate_stack (coro); |
3041 | SV * |
982 | |
3042 | is_ready (Coro::State coro) |
983 | Safefree (coro); |
3043 | PROTOTYPE: $ |
|
|
3044 | ALIAS: |
|
|
3045 | is_ready = CF_READY |
|
|
3046 | is_running = CF_RUNNING |
|
|
3047 | is_new = CF_NEW |
|
|
3048 | is_destroyed = CF_DESTROYED |
|
|
3049 | CODE: |
|
|
3050 | RETVAL = boolSV (coro->flags & ix); |
|
|
3051 | OUTPUT: |
|
|
3052 | RETVAL |
984 | |
3053 | |
985 | void |
3054 | void |
986 | flush() |
3055 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
987 | CODE: |
3056 | PROTOTYPE: $;$ |
988 | #ifdef MAY_FLUSH |
3057 | CODE: |
989 | flush_padlist_cache (); |
3058 | { |
990 | #endif |
3059 | struct coro *current = SvSTATE_current; |
|
|
3060 | SV **throwp = self == current ? &CORO_THROW : &self->except; |
|
|
3061 | SvREFCNT_dec (*throwp); |
|
|
3062 | *throwp = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
3063 | } |
991 | |
3064 | |
992 | void |
3065 | void |
993 | _exit(code) |
3066 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
994 | int code |
3067 | PROTOTYPE: $;$ |
|
|
3068 | C_ARGS: aTHX_ coro, flags |
|
|
3069 | |
|
|
3070 | SV * |
|
|
3071 | has_cctx (Coro::State coro) |
995 | PROTOTYPE: $ |
3072 | PROTOTYPE: $ |
996 | CODE: |
3073 | CODE: |
997 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
3074 | /* maybe manage the running flag differently */ |
998 | _exit (code); |
3075 | RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING)); |
999 | #else |
3076 | OUTPUT: |
1000 | signal (SIGTERM, SIG_DFL); |
3077 | RETVAL |
1001 | raise (SIGTERM); |
|
|
1002 | exit (code); |
|
|
1003 | #endif |
|
|
1004 | |
3078 | |
1005 | MODULE = Coro::State PACKAGE = Coro::Cont |
3079 | int |
|
|
3080 | is_traced (Coro::State coro) |
|
|
3081 | PROTOTYPE: $ |
|
|
3082 | CODE: |
|
|
3083 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
3084 | OUTPUT: |
|
|
3085 | RETVAL |
1006 | |
3086 | |
1007 | # this is slightly dirty (should expose a c-level api) |
3087 | UV |
|
|
3088 | rss (Coro::State coro) |
|
|
3089 | PROTOTYPE: $ |
|
|
3090 | ALIAS: |
|
|
3091 | usecount = 1 |
|
|
3092 | CODE: |
|
|
3093 | switch (ix) |
|
|
3094 | { |
|
|
3095 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
|
|
3096 | case 1: RETVAL = coro->usecount; break; |
|
|
3097 | } |
|
|
3098 | OUTPUT: |
|
|
3099 | RETVAL |
1008 | |
3100 | |
1009 | void |
3101 | void |
1010 | yield(...) |
3102 | force_cctx () |
|
|
3103 | PROTOTYPE: |
|
|
3104 | CODE: |
|
|
3105 | cctx_current->idle_sp = 0; |
|
|
3106 | |
|
|
3107 | void |
|
|
3108 | swap_defsv (Coro::State self) |
1011 | PROTOTYPE: @ |
3109 | PROTOTYPE: $ |
|
|
3110 | ALIAS: |
|
|
3111 | swap_defav = 1 |
1012 | CODE: |
3112 | CODE: |
1013 | static SV *returnstk; |
3113 | if (!self->slot) |
1014 | SV *sv; |
3114 | croak ("cannot swap state with coroutine that has no saved state,"); |
1015 | AV *defav = GvAV (PL_defgv); |
3115 | else |
1016 | struct coro *prev, *next; |
3116 | { |
|
|
3117 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
3118 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
1017 | |
3119 | |
1018 | if (!returnstk) |
3120 | SV *tmp = *src; *src = *dst; *dst = tmp; |
1019 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
3121 | } |
1020 | |
3122 | |
1021 | /* set up @_ -- ugly */ |
|
|
1022 | av_clear (defav); |
|
|
1023 | av_fill (defav, items - 1); |
|
|
1024 | while (items--) |
|
|
1025 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1026 | |
|
|
1027 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1028 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
1029 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1030 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1031 | SvREFCNT_dec (sv); |
|
|
1032 | |
|
|
1033 | transfer(aTHX_ prev, next, 0); |
|
|
1034 | |
3123 | |
1035 | MODULE = Coro::State PACKAGE = Coro |
3124 | MODULE = Coro::State PACKAGE = Coro |
1036 | |
3125 | |
1037 | # this is slightly dirty (should expose a c-level api) |
|
|
1038 | |
|
|
1039 | BOOT: |
3126 | BOOT: |
1040 | { |
3127 | { |
1041 | int i; |
3128 | int i; |
|
|
3129 | |
|
|
3130 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
3131 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
3132 | cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD); |
|
|
3133 | cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD); |
|
|
3134 | coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current); |
|
|
3135 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
3136 | av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE); |
|
|
3137 | sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE); |
|
|
3138 | sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE); |
|
|
3139 | |
|
|
3140 | sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle); |
|
|
3141 | sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro); |
|
|
3142 | cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler); |
|
|
3143 | cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new); |
|
|
3144 | |
1042 | HV *stash = gv_stashpv ("Coro", TRUE); |
3145 | coro_stash = gv_stashpv ("Coro", TRUE); |
1043 | |
3146 | |
1044 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
3147 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1045 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
3148 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1046 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
3149 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1047 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
3150 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1048 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
3151 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1049 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
3152 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1050 | |
|
|
1051 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1052 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1053 | |
3153 | |
1054 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
3154 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1055 | coro_ready[i] = newAV (); |
3155 | coro_ready[i] = newAV (); |
1056 | |
3156 | |
1057 | { |
3157 | { |
1058 | SV *sv = perl_get_sv("Coro::API", 1); |
3158 | SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE); |
1059 | |
3159 | |
1060 | coroapi.schedule = api_schedule; |
3160 | coroapi.schedule = api_schedule; |
|
|
3161 | coroapi.schedule_to = api_schedule_to; |
1061 | coroapi.cede = api_cede; |
3162 | coroapi.cede = api_cede; |
|
|
3163 | coroapi.cede_notself = api_cede_notself; |
1062 | coroapi.ready = api_ready; |
3164 | coroapi.ready = api_ready; |
|
|
3165 | coroapi.is_ready = api_is_ready; |
1063 | coroapi.nready = &coro_nready; |
3166 | coroapi.nready = coro_nready; |
1064 | coroapi.current = coro_current; |
3167 | coroapi.current = coro_current; |
1065 | |
3168 | |
1066 | GCoroAPI = &coroapi; |
3169 | /*GCoroAPI = &coroapi;*/ |
1067 | sv_setiv(sv, (IV)&coroapi); |
3170 | sv_setiv (sv, (IV)&coroapi); |
1068 | SvREADONLY_on(sv); |
3171 | SvREADONLY_on (sv); |
1069 | } |
3172 | } |
1070 | } |
3173 | } |
1071 | |
3174 | |
1072 | void |
3175 | void |
1073 | ready(self) |
3176 | terminate (...) |
1074 | SV * self |
3177 | CODE: |
|
|
3178 | CORO_EXECUTE_SLF_XS (slf_init_terminate); |
|
|
3179 | |
|
|
3180 | void |
|
|
3181 | schedule (...) |
|
|
3182 | CODE: |
|
|
3183 | CORO_EXECUTE_SLF_XS (slf_init_schedule); |
|
|
3184 | |
|
|
3185 | void |
|
|
3186 | schedule_to (...) |
|
|
3187 | CODE: |
|
|
3188 | CORO_EXECUTE_SLF_XS (slf_init_schedule_to); |
|
|
3189 | |
|
|
3190 | void |
|
|
3191 | cede_to (...) |
|
|
3192 | CODE: |
|
|
3193 | CORO_EXECUTE_SLF_XS (slf_init_cede_to); |
|
|
3194 | |
|
|
3195 | void |
|
|
3196 | cede (...) |
|
|
3197 | CODE: |
|
|
3198 | CORO_EXECUTE_SLF_XS (slf_init_cede); |
|
|
3199 | |
|
|
3200 | void |
|
|
3201 | cede_notself (...) |
|
|
3202 | CODE: |
|
|
3203 | CORO_EXECUTE_SLF_XS (slf_init_cede_notself); |
|
|
3204 | |
|
|
3205 | void |
|
|
3206 | _cancel (Coro::State self) |
|
|
3207 | CODE: |
|
|
3208 | coro_state_destroy (aTHX_ self); |
|
|
3209 | coro_call_on_destroy (aTHX_ self); |
|
|
3210 | |
|
|
3211 | void |
|
|
3212 | _set_current (SV *current) |
1075 | PROTOTYPE: $ |
3213 | PROTOTYPE: $ |
1076 | CODE: |
3214 | CODE: |
1077 | api_ready (self); |
3215 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
3216 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
|
|
3217 | |
|
|
3218 | void |
|
|
3219 | _set_readyhook (SV *hook) |
|
|
3220 | PROTOTYPE: $ |
|
|
3221 | CODE: |
|
|
3222 | SvREFCNT_dec (coro_readyhook); |
|
|
3223 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
1078 | |
3224 | |
1079 | int |
3225 | int |
|
|
3226 | prio (Coro::State coro, int newprio = 0) |
|
|
3227 | PROTOTYPE: $;$ |
|
|
3228 | ALIAS: |
|
|
3229 | nice = 1 |
|
|
3230 | CODE: |
|
|
3231 | { |
|
|
3232 | RETVAL = coro->prio; |
|
|
3233 | |
|
|
3234 | if (items > 1) |
|
|
3235 | { |
|
|
3236 | if (ix) |
|
|
3237 | newprio = coro->prio - newprio; |
|
|
3238 | |
|
|
3239 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
3240 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
3241 | |
|
|
3242 | coro->prio = newprio; |
|
|
3243 | } |
|
|
3244 | } |
|
|
3245 | OUTPUT: |
|
|
3246 | RETVAL |
|
|
3247 | |
|
|
3248 | SV * |
|
|
3249 | ready (SV *self) |
|
|
3250 | PROTOTYPE: $ |
|
|
3251 | CODE: |
|
|
3252 | RETVAL = boolSV (api_ready (aTHX_ self)); |
|
|
3253 | OUTPUT: |
|
|
3254 | RETVAL |
|
|
3255 | |
|
|
3256 | int |
1080 | nready(...) |
3257 | nready (...) |
1081 | PROTOTYPE: |
3258 | PROTOTYPE: |
1082 | CODE: |
3259 | CODE: |
1083 | RETVAL = coro_nready; |
3260 | RETVAL = coro_nready; |
1084 | OUTPUT: |
3261 | OUTPUT: |
1085 | RETVAL |
3262 | RETVAL |
1086 | |
3263 | |
1087 | void |
3264 | void |
1088 | schedule(...) |
3265 | _pool_handler (...) |
1089 | PROTOTYPE: |
|
|
1090 | CODE: |
3266 | CODE: |
1091 | api_schedule (); |
3267 | CORO_EXECUTE_SLF_XS (slf_init_pool_handler); |
1092 | |
3268 | |
1093 | void |
3269 | void |
1094 | cede(...) |
3270 | async_pool (SV *cv, ...) |
1095 | PROTOTYPE: |
3271 | PROTOTYPE: &@ |
|
|
3272 | PPCODE: |
|
|
3273 | { |
|
|
3274 | HV *hv = (HV *)av_pop (av_async_pool); |
|
|
3275 | AV *av = newAV (); |
|
|
3276 | SV *cb = ST (0); |
|
|
3277 | int i; |
|
|
3278 | |
|
|
3279 | av_extend (av, items - 2); |
|
|
3280 | for (i = 1; i < items; ++i) |
|
|
3281 | av_push (av, SvREFCNT_inc_NN (ST (i))); |
|
|
3282 | |
|
|
3283 | if ((SV *)hv == &PL_sv_undef) |
|
|
3284 | { |
|
|
3285 | PUSHMARK (SP); |
|
|
3286 | EXTEND (SP, 2); |
|
|
3287 | PUSHs (sv_Coro); |
|
|
3288 | PUSHs ((SV *)cv_pool_handler); |
|
|
3289 | PUTBACK; |
|
|
3290 | call_sv ((SV *)cv_coro_state_new, G_SCALAR); |
|
|
3291 | SPAGAIN; |
|
|
3292 | |
|
|
3293 | hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs)); |
|
|
3294 | } |
|
|
3295 | |
|
|
3296 | { |
|
|
3297 | struct coro *coro = SvSTATE_hv (hv); |
|
|
3298 | |
|
|
3299 | assert (!coro->invoke_cb); |
|
|
3300 | assert (!coro->invoke_av); |
|
|
3301 | coro->invoke_cb = SvREFCNT_inc (cb); |
|
|
3302 | coro->invoke_av = av; |
|
|
3303 | } |
|
|
3304 | |
|
|
3305 | api_ready (aTHX_ (SV *)hv); |
|
|
3306 | |
|
|
3307 | if (GIMME_V != G_VOID) |
|
|
3308 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)hv))); |
|
|
3309 | else |
|
|
3310 | SvREFCNT_dec (hv); |
|
|
3311 | } |
|
|
3312 | |
|
|
3313 | SV * |
|
|
3314 | rouse_cb () |
|
|
3315 | PROTOTYPE: |
1096 | CODE: |
3316 | CODE: |
|
|
3317 | RETVAL = coro_new_rouse_cb (aTHX); |
|
|
3318 | OUTPUT: |
|
|
3319 | RETVAL |
|
|
3320 | |
|
|
3321 | void |
|
|
3322 | rouse_wait (...) |
|
|
3323 | PROTOTYPE: ;$ |
|
|
3324 | PPCODE: |
|
|
3325 | CORO_EXECUTE_SLF_XS (slf_init_rouse_wait); |
|
|
3326 | |
|
|
3327 | |
|
|
3328 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
3329 | |
|
|
3330 | BOOT: |
|
|
3331 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |
|
|
3332 | |
|
|
3333 | |
|
|
3334 | MODULE = Coro::State PACKAGE = Coro::Semaphore |
|
|
3335 | |
|
|
3336 | SV * |
|
|
3337 | new (SV *klass, SV *count = 0) |
|
|
3338 | CODE: |
|
|
3339 | RETVAL = sv_bless ( |
|
|
3340 | coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1), |
|
|
3341 | GvSTASH (CvGV (cv)) |
|
|
3342 | ); |
|
|
3343 | OUTPUT: |
|
|
3344 | RETVAL |
|
|
3345 | |
|
|
3346 | # helper for Coro::Channel |
|
|
3347 | SV * |
|
|
3348 | _alloc (int count) |
|
|
3349 | CODE: |
|
|
3350 | RETVAL = coro_waitarray_new (aTHX_ count); |
|
|
3351 | OUTPUT: |
|
|
3352 | RETVAL |
|
|
3353 | |
|
|
3354 | SV * |
|
|
3355 | count (SV *self) |
|
|
3356 | CODE: |
|
|
3357 | RETVAL = newSVsv (AvARRAY ((AV *)SvRV (self))[0]); |
|
|
3358 | OUTPUT: |
|
|
3359 | RETVAL |
|
|
3360 | |
|
|
3361 | void |
|
|
3362 | up (SV *self, int adjust = 1) |
|
|
3363 | ALIAS: |
|
|
3364 | adjust = 1 |
|
|
3365 | CODE: |
|
|
3366 | coro_semaphore_adjust (aTHX_ (AV *)SvRV (self), ix ? adjust : 1); |
|
|
3367 | |
|
|
3368 | void |
|
|
3369 | down (...) |
|
|
3370 | CODE: |
|
|
3371 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_down); |
|
|
3372 | |
|
|
3373 | void |
|
|
3374 | wait (...) |
|
|
3375 | CODE: |
|
|
3376 | CORO_EXECUTE_SLF_XS (slf_init_semaphore_wait); |
|
|
3377 | |
|
|
3378 | void |
|
|
3379 | try (SV *self) |
|
|
3380 | PPCODE: |
|
|
3381 | { |
|
|
3382 | AV *av = (AV *)SvRV (self); |
|
|
3383 | SV *count_sv = AvARRAY (av)[0]; |
|
|
3384 | IV count = SvIVX (count_sv); |
|
|
3385 | |
|
|
3386 | if (count > 0) |
|
|
3387 | { |
|
|
3388 | --count; |
|
|
3389 | SvIVX (count_sv) = count; |
|
|
3390 | XSRETURN_YES; |
|
|
3391 | } |
|
|
3392 | else |
|
|
3393 | XSRETURN_NO; |
|
|
3394 | } |
|
|
3395 | |
|
|
3396 | void |
|
|
3397 | waiters (SV *self) |
|
|
3398 | PPCODE: |
|
|
3399 | { |
|
|
3400 | AV *av = (AV *)SvRV (self); |
|
|
3401 | int wcount = AvFILLp (av) + 1 - 1; |
|
|
3402 | |
|
|
3403 | if (GIMME_V == G_SCALAR) |
|
|
3404 | XPUSHs (sv_2mortal (newSViv (wcount))); |
|
|
3405 | else |
|
|
3406 | { |
|
|
3407 | int i; |
|
|
3408 | EXTEND (SP, wcount); |
|
|
3409 | for (i = 1; i <= wcount; ++i) |
|
|
3410 | PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i]))); |
|
|
3411 | } |
|
|
3412 | } |
|
|
3413 | |
|
|
3414 | MODULE = Coro::State PACKAGE = Coro::Signal |
|
|
3415 | |
|
|
3416 | SV * |
|
|
3417 | new (SV *klass) |
|
|
3418 | CODE: |
|
|
3419 | RETVAL = sv_bless ( |
|
|
3420 | coro_waitarray_new (aTHX_ 0), |
|
|
3421 | GvSTASH (CvGV (cv)) |
|
|
3422 | ); |
|
|
3423 | OUTPUT: |
|
|
3424 | RETVAL |
|
|
3425 | |
|
|
3426 | void |
|
|
3427 | wait (...) |
|
|
3428 | CODE: |
|
|
3429 | CORO_EXECUTE_SLF_XS (slf_init_signal_wait); |
|
|
3430 | |
|
|
3431 | void |
|
|
3432 | broadcast (SV *self) |
|
|
3433 | CODE: |
|
|
3434 | { |
|
|
3435 | AV *av = (AV *)SvRV (self); |
|
|
3436 | coro_signal_wake (aTHX_ av, AvFILLp (av)); |
|
|
3437 | } |
|
|
3438 | |
|
|
3439 | void |
|
|
3440 | send (SV *self) |
|
|
3441 | CODE: |
|
|
3442 | { |
|
|
3443 | AV *av = (AV *)SvRV (self); |
|
|
3444 | |
|
|
3445 | if (AvFILLp (av)) |
|
|
3446 | coro_signal_wake (aTHX_ av, 1); |
|
|
3447 | else |
|
|
3448 | SvIVX (AvARRAY (av)[0]) = 1; /* remember the signal */ |
|
|
3449 | } |
|
|
3450 | |
|
|
3451 | IV |
|
|
3452 | awaited (SV *self) |
|
|
3453 | CODE: |
|
|
3454 | RETVAL = AvFILLp ((AV *)SvRV (self)) + 1 - 1; |
|
|
3455 | OUTPUT: |
|
|
3456 | RETVAL |
|
|
3457 | |
|
|
3458 | |
|
|
3459 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
3460 | |
|
|
3461 | BOOT: |
|
|
3462 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
3463 | |
|
|
3464 | void |
|
|
3465 | _schedule (...) |
|
|
3466 | CODE: |
|
|
3467 | { |
|
|
3468 | static int incede; |
|
|
3469 | |
1097 | api_cede (); |
3470 | api_cede_notself (aTHX); |
1098 | |
3471 | |
|
|
3472 | ++incede; |
|
|
3473 | while (coro_nready >= incede && api_cede (aTHX)) |
|
|
3474 | ; |
|
|
3475 | |
|
|
3476 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
3477 | if (coro_nready >= incede) |
|
|
3478 | { |
|
|
3479 | PUSHMARK (SP); |
|
|
3480 | PUTBACK; |
|
|
3481 | call_pv ("Coro::AnyEvent::_activity", G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
3482 | } |
|
|
3483 | |
|
|
3484 | --incede; |
|
|
3485 | } |
|
|
3486 | |
|
|
3487 | |
|
|
3488 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
3489 | |
|
|
3490 | void |
|
|
3491 | _register (char *target, char *proto, SV *req) |
|
|
3492 | CODE: |
|
|
3493 | { |
|
|
3494 | CV *req_cv = coro_sv_2cv (aTHX_ req); |
|
|
3495 | /* newXSproto doesn't return the CV on 5.8 */ |
|
|
3496 | CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__); |
|
|
3497 | sv_setpv ((SV *)slf_cv, proto); |
|
|
3498 | sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0); |
|
|
3499 | } |
|
|
3500 | |