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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" |
4 | |
9 | |
5 | #include "libcoro/coro.c" |
10 | #include "patchlevel.h" |
6 | |
11 | |
7 | #include <signal.h> |
12 | #include <stdio.h> |
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13 | #include <errno.h> |
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14 | #include <assert.h> |
8 | |
15 | |
9 | #ifdef HAVE_MMAP |
16 | #ifdef HAVE_MMAP |
10 | # include <unistd.h> |
17 | # include <unistd.h> |
11 | # include <sys/mman.h> |
18 | # include <sys/mman.h> |
12 | # ifndef MAP_ANON |
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13 | # ifdef MAP_ANONYMOUS |
19 | # ifndef MAP_ANONYMOUS |
14 | # define MAP_ANON MAP_ANONYMOUS |
20 | # ifdef MAP_ANON |
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21 | # define MAP_ANONYMOUS MAP_ANON |
15 | # else |
22 | # else |
16 | # undef HAVE_MMAP |
23 | # undef HAVE_MMAP |
17 | # endif |
24 | # endif |
18 | # endif |
25 | # endif |
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26 | # include <limits.h> |
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27 | # ifndef PAGESIZE |
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28 | # define PAGESIZE pagesize |
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29 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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30 | static long pagesize; |
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31 | # else |
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32 | # define BOOT_PAGESIZE (void)0 |
19 | #endif |
33 | # endif |
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34 | #else |
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35 | # define PAGESIZE 0 |
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36 | # define BOOT_PAGESIZE (void)0 |
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37 | #endif |
20 | |
38 | |
21 | #define MAY_FLUSH /* increases codesize and is rarely used */ |
39 | #if CORO_USE_VALGRIND |
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40 | # include <valgrind/valgrind.h> |
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41 | # define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
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42 | #else |
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43 | # define REGISTER_STACK(cctx,start,end) |
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44 | #endif |
22 | |
45 | |
23 | #define SUB_INIT "Coro::State::initialize" |
46 | /* the maximum number of idle cctx that will be pooled */ |
24 | #define UCORO_STATE "_coro_state" |
47 | #define MAX_IDLE_CCTX 8 |
25 | |
48 | |
26 | /* The next macro should declare a variable stacklevel that contains and approximation |
49 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
27 | * to the current C stack pointer. Its property is that it changes with each call |
50 | (PERL_REVISION > (a) \ |
28 | * and should be unique. */ |
51 | || (PERL_REVISION == (a) \ |
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52 | && (PERL_VERSION > (b) \ |
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53 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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54 | |
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55 | #if !PERL_VERSION_ATLEAST (5,6,0) |
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56 | # ifndef PL_ppaddr |
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57 | # define PL_ppaddr ppaddr |
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58 | # endif |
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59 | # ifndef call_sv |
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60 | # define call_sv perl_call_sv |
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61 | # endif |
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62 | # ifndef get_sv |
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63 | # define get_sv perl_get_sv |
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64 | # endif |
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65 | # ifndef get_cv |
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66 | # define get_cv perl_get_cv |
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67 | # endif |
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68 | # ifndef IS_PADGV |
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69 | # define IS_PADGV(v) 0 |
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70 | # endif |
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71 | # ifndef IS_PADCONST |
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72 | # define IS_PADCONST(v) 0 |
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73 | # endif |
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74 | #endif |
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75 | |
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76 | /* 5.8.7 */ |
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77 | #ifndef SvRV_set |
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78 | # define SvRV_set(s,v) SvRV(s) = (v) |
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79 | #endif |
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80 | |
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81 | /* 5.8.8 */ |
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82 | #ifndef GV_NOTQUAL |
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83 | # define GV_NOTQUAL 0 |
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84 | #endif |
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85 | #ifndef newSV |
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86 | # define newSV(l) NEWSV(0,l) |
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87 | #endif |
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88 | |
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89 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
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90 | # undef CORO_STACKGUARD |
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91 | #endif |
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92 | |
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93 | #ifndef CORO_STACKGUARD |
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94 | # define CORO_STACKGUARD 0 |
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95 | #endif |
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96 | |
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97 | /* prefer perl internal functions over our own? */ |
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98 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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99 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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100 | #endif |
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101 | |
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102 | /* The next macros try to return the current stack pointer, in an as |
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103 | * portable way as possible. */ |
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104 | #define dSTACKLEVEL volatile char stacklevel |
29 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
105 | #define STACKLEVEL ((void *)&stacklevel) |
30 | |
106 | |
31 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
107 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
32 | |
108 | |
33 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
109 | #if __GNUC__ >= 3 |
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110 | # define attribute(x) __attribute__(x) |
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111 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
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112 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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113 | #else |
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114 | # define attribute(x) |
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115 | # define BARRIER |
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116 | # define expect(expr,value) (expr) |
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117 | #endif |
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118 | |
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119 | #define expect_false(expr) expect ((expr) != 0, 0) |
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120 | #define expect_true(expr) expect ((expr) != 0, 1) |
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121 | |
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122 | #define NOINLINE attribute ((noinline)) |
34 | |
123 | |
35 | #include "CoroAPI.h" |
124 | #include "CoroAPI.h" |
36 | |
125 | |
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126 | #ifdef USE_ITHREADS |
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127 | static perl_mutex coro_mutex; |
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128 | # define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0) |
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129 | # define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0) |
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130 | #else |
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131 | # define LOCK (void)0 |
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132 | # define UNLOCK (void)0 |
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133 | #endif |
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134 | |
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135 | #define strpair(const) const, sizeof (const) - 1 |
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136 | |
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137 | /* helper storage struct for Coro::AIO */ |
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138 | struct io_state |
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139 | { |
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140 | int errorno; |
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141 | I32 laststype; |
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142 | int laststatval; |
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143 | Stat_t statcache; |
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144 | }; |
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145 | |
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146 | static size_t coro_stacksize = CORO_STACKSIZE; |
37 | static struct CoroAPI coroapi; |
147 | static struct CoroAPI coroapi; |
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148 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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149 | static JMPENV *main_top_env; |
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150 | static HV *coro_state_stash, *coro_stash; |
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151 | static SV *coro_mortal; /* will be freed after next transfer */ |
38 | |
152 | |
39 | /* this is actually not only the c stack but also c registers etc... */ |
153 | static GV *irsgv; /* $/ */ |
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154 | static GV *stdoutgv; /* *STDOUT */ |
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155 | |
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156 | static HV *hv_sig; /* %SIG */ |
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157 | static SV *sv_diehook; |
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158 | static SV *sv_warnhook; |
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159 | |
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160 | /* async_pool helper stuff */ |
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161 | static SV *sv_pool_rss; |
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162 | static SV *sv_pool_size; |
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163 | static AV *av_async_pool; |
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164 | |
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165 | static struct coro_cctx *cctx_first; |
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166 | static int cctx_count, cctx_idle; |
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167 | |
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168 | enum { |
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169 | CC_MAPPED = 0x01, |
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170 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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171 | CC_TRACE = 0x04, |
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172 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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173 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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174 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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175 | }; |
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176 | |
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177 | /* this is a structure representing a c-level coroutine */ |
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178 | typedef struct coro_cctx { |
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179 | struct coro_cctx *next; |
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180 | |
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181 | /* the stack */ |
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182 | void *sptr; |
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183 | size_t ssize; |
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184 | |
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185 | /* cpu state */ |
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186 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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187 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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188 | JMPENV *top_env; |
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189 | coro_context cctx; |
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190 | |
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191 | #if CORO_USE_VALGRIND |
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192 | int valgrind_id; |
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193 | #endif |
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194 | unsigned char flags; |
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195 | } coro_cctx; |
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196 | |
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197 | enum { |
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198 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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199 | CF_READY = 0x0002, /* coroutine is ready */ |
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200 | CF_NEW = 0x0004, /* has never been switched to */ |
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201 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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202 | }; |
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203 | |
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204 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
40 | typedef struct { |
205 | typedef struct { |
41 | int refcnt; /* pointer reference counter */ |
206 | SV *defsv; |
42 | int usecnt; /* shared by how many coroutines */ |
207 | AV *defav; |
43 | int gencnt; /* generation counter */ |
208 | SV *errsv; |
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209 | SV *irsgv; |
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210 | #define VAR(name,type) type name; |
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211 | # include "state.h" |
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212 | #undef VAR |
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213 | } perl_slots; |
44 | |
214 | |
45 | coro_context cctx; |
215 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
46 | |
216 | |
47 | void *sptr; |
217 | /* this is a structure representing a perl-level coroutine */ |
48 | long ssize; /* positive == mmap, otherwise malloc */ |
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49 | } coro_stack; |
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50 | |
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51 | struct coro { |
218 | struct coro { |
52 | /* the optional C context */ |
219 | /* the c coroutine allocated to this perl coroutine, if any */ |
53 | coro_stack *stack; |
220 | coro_cctx *cctx; |
54 | void *cursp; |
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55 | int gencnt; |
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56 | |
221 | |
57 | /* optionally saved, might be zero */ |
222 | /* process data */ |
58 | AV *defav; |
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59 | SV *defsv; |
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60 | SV *errsv; |
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61 | |
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62 | /* saved global state not related to stacks */ |
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63 | U8 dowarn; |
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64 | I32 in_eval; |
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65 | |
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66 | /* the stacks and related info (callchain etc..) */ |
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67 | PERL_SI *curstackinfo; |
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68 | AV *curstack; |
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69 | AV *mainstack; |
223 | AV *mainstack; |
70 | SV **stack_sp; |
224 | perl_slots *slot; /* basically the saved sp */ |
71 | OP *op; |
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72 | SV **curpad; |
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73 | SV **stack_base; |
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74 | SV **stack_max; |
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75 | SV **tmps_stack; |
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76 | I32 tmps_floor; |
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77 | I32 tmps_ix; |
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78 | I32 tmps_max; |
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79 | I32 *markstack; |
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80 | I32 *markstack_ptr; |
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81 | I32 *markstack_max; |
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82 | I32 *scopestack; |
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83 | I32 scopestack_ix; |
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84 | I32 scopestack_max; |
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85 | ANY *savestack; |
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86 | I32 savestack_ix; |
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87 | I32 savestack_max; |
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88 | OP **retstack; |
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89 | I32 retstack_ix; |
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90 | I32 retstack_max; |
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91 | COP *curcop; |
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92 | JMPENV *top_env; |
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93 | |
225 | |
94 | /* data associated with this coroutine (initial args) */ |
226 | AV *args; /* data associated with this coroutine (initial args) */ |
95 | AV *args; |
227 | int refcnt; /* coroutines are refcounted, yes */ |
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228 | int flags; /* CF_ flags */ |
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229 | HV *hv; /* the perl hash associated with this coro, if any */ |
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230 | |
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231 | /* statistics */ |
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232 | int usecount; /* number of transfers to this coro */ |
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233 | |
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234 | /* coro process data */ |
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235 | int prio; |
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236 | SV *throw; /* exception to be thrown */ |
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237 | |
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238 | /* async_pool */ |
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239 | SV *saved_deffh; |
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240 | |
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241 | /* linked list */ |
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242 | struct coro *next, *prev; |
96 | }; |
243 | }; |
97 | |
244 | |
98 | typedef struct coro *Coro__State; |
245 | typedef struct coro *Coro__State; |
99 | typedef struct coro *Coro__State_or_hashref; |
246 | typedef struct coro *Coro__State_or_hashref; |
100 | |
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101 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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102 | static HV *coro_state_stash; |
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103 | static SV *ucoro_state_sv; |
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104 | static U32 ucoro_state_hash; |
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105 | static HV *padlist_cache; |
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106 | |
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107 | /* mostly copied from op.c:cv_clone2 */ |
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108 | STATIC AV * |
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109 | clone_padlist (AV *protopadlist) |
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110 | { |
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111 | AV *av; |
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112 | I32 ix; |
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113 | AV *protopad_name = (AV *) * av_fetch (protopadlist, 0, FALSE); |
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114 | AV *protopad = (AV *) * av_fetch (protopadlist, 1, FALSE); |
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115 | SV **pname = AvARRAY (protopad_name); |
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116 | SV **ppad = AvARRAY (protopad); |
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117 | I32 fname = AvFILLp (protopad_name); |
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118 | I32 fpad = AvFILLp (protopad); |
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119 | AV *newpadlist, *newpad_name, *newpad; |
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120 | SV **npad; |
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121 | |
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122 | newpad_name = newAV (); |
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123 | for (ix = fname; ix >= 0; ix--) |
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124 | av_store (newpad_name, ix, SvREFCNT_inc (pname[ix])); |
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125 | |
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126 | newpad = newAV (); |
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127 | av_fill (newpad, AvFILLp (protopad)); |
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128 | npad = AvARRAY (newpad); |
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129 | |
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130 | newpadlist = newAV (); |
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131 | AvREAL_off (newpadlist); |
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132 | av_store (newpadlist, 0, (SV *) newpad_name); |
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133 | av_store (newpadlist, 1, (SV *) newpad); |
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134 | |
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135 | av = newAV (); /* will be @_ */ |
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136 | av_extend (av, 0); |
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137 | av_store (newpad, 0, (SV *) av); |
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138 | AvFLAGS (av) = AVf_REIFY; |
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139 | |
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140 | for (ix = fpad; ix > 0; ix--) |
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141 | { |
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142 | SV *namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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143 | if (namesv && namesv != &PL_sv_undef) |
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144 | { |
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145 | char *name = SvPVX (namesv); /* XXX */ |
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146 | if (SvFLAGS (namesv) & SVf_FAKE || *name == '&') |
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147 | { /* lexical from outside? */ |
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148 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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149 | } |
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150 | else |
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151 | { /* our own lexical */ |
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152 | SV *sv; |
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153 | if (*name == '&') |
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154 | sv = SvREFCNT_inc (ppad[ix]); |
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155 | else if (*name == '@') |
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156 | sv = (SV *) newAV (); |
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157 | else if (*name == '%') |
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158 | sv = (SV *) newHV (); |
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159 | else |
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160 | sv = NEWSV (0, 0); |
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161 | if (!SvPADBUSY (sv)) |
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162 | SvPADMY_on (sv); |
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163 | npad[ix] = sv; |
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164 | } |
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165 | } |
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166 | else if (IS_PADGV (ppad[ix]) || IS_PADCONST (ppad[ix])) |
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167 | { |
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168 | npad[ix] = SvREFCNT_inc (ppad[ix]); |
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169 | } |
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170 | else |
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171 | { |
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172 | SV *sv = NEWSV (0, 0); |
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173 | SvPADTMP_on (sv); |
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174 | npad[ix] = sv; |
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175 | } |
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176 | } |
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177 | |
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178 | #if 0 /* return -ENOTUNDERSTOOD */ |
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179 | /* Now that vars are all in place, clone nested closures. */ |
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180 | |
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181 | for (ix = fpad; ix > 0; ix--) { |
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182 | SV* namesv = (ix <= fname) ? pname[ix] : Nullsv; |
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183 | if (namesv |
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184 | && namesv != &PL_sv_undef |
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185 | && !(SvFLAGS(namesv) & SVf_FAKE) |
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186 | && *SvPVX(namesv) == '&' |
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187 | && CvCLONE(ppad[ix])) |
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188 | { |
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189 | CV *kid = cv_clone((CV*)ppad[ix]); |
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190 | SvREFCNT_dec(ppad[ix]); |
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191 | CvCLONE_on(kid); |
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192 | SvPADMY_on(kid); |
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193 | npad[ix] = (SV*)kid; |
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194 | } |
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195 | } |
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196 | #endif |
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197 | |
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198 | return newpadlist; |
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199 | } |
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200 | |
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201 | #ifdef MAY_FLUSH |
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202 | STATIC void |
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203 | free_padlist (AV *padlist) |
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204 | { |
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205 | /* may be during global destruction */ |
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206 | if (SvREFCNT(padlist)) |
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207 | { |
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208 | I32 i = AvFILLp(padlist); |
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209 | while (i >= 0) |
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210 | { |
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211 | SV **svp = av_fetch(padlist, i--, FALSE); |
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212 | SV *sv = svp ? *svp : Nullsv; |
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213 | if (sv) |
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214 | SvREFCNT_dec(sv); |
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215 | } |
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216 | |
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217 | SvREFCNT_dec((SV*)padlist); |
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218 | } |
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219 | } |
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220 | #endif |
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221 | |
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222 | /* the next two functions merely cache the padlists */ |
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223 | STATIC void |
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224 | get_padlist (CV *cv) |
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225 | { |
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226 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 0); |
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227 | |
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228 | if (he && AvFILLp ((AV *)*he) >= 0) |
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229 | CvPADLIST (cv) = (AV *)av_pop ((AV *)*he); |
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230 | else |
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231 | CvPADLIST (cv) = clone_padlist (CvPADLIST (cv)); |
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232 | } |
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233 | |
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234 | STATIC void |
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235 | put_padlist (CV *cv) |
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236 | { |
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237 | SV **he = hv_fetch (padlist_cache, (void *)&cv, sizeof (CV *), 1); |
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238 | |
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239 | if (SvTYPE (*he) != SVt_PVAV) |
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240 | { |
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241 | SvREFCNT_dec (*he); |
|
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242 | *he = (SV *)newAV (); |
|
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243 | } |
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244 | |
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245 | av_push ((AV *)*he, (SV *)CvPADLIST (cv)); |
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246 | } |
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247 | |
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|
248 | #ifdef MAY_FLUSH |
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249 | STATIC void |
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250 | flush_padlist_cache () |
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251 | { |
|
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252 | HV *hv = padlist_cache; |
|
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253 | padlist_cache = newHV (); |
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254 | |
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|
255 | if (hv_iterinit (hv)) |
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256 | { |
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257 | HE *he; |
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258 | AV *padlist; |
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259 | |
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260 | while (!!(he = hv_iternext (hv))) |
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261 | { |
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262 | AV *av = (AV *)HeVAL(he); |
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263 | |
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264 | /* casting is fun. */ |
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265 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
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266 | free_padlist (padlist); |
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267 | } |
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268 | } |
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269 | |
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270 | SvREFCNT_dec (hv); |
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271 | } |
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272 | #endif |
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273 | |
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274 | #define SB do { |
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275 | #define SE } while (0) |
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276 | |
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277 | #define LOAD(state) load_state(aTHX_ (state)); |
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278 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
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279 | |
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280 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE |
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281 | |
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282 | static void |
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283 | load_state(pTHX_ Coro__State c) |
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284 | { |
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285 | PL_dowarn = c->dowarn; |
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286 | PL_in_eval = c->in_eval; |
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287 | |
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288 | PL_curstackinfo = c->curstackinfo; |
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289 | PL_curstack = c->curstack; |
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290 | PL_mainstack = c->mainstack; |
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291 | PL_stack_sp = c->stack_sp; |
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292 | PL_op = c->op; |
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293 | PL_curpad = c->curpad; |
|
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294 | PL_stack_base = c->stack_base; |
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295 | PL_stack_max = c->stack_max; |
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296 | PL_tmps_stack = c->tmps_stack; |
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297 | PL_tmps_floor = c->tmps_floor; |
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298 | PL_tmps_ix = c->tmps_ix; |
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299 | PL_tmps_max = c->tmps_max; |
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300 | PL_markstack = c->markstack; |
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301 | PL_markstack_ptr = c->markstack_ptr; |
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302 | PL_markstack_max = c->markstack_max; |
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303 | PL_scopestack = c->scopestack; |
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304 | PL_scopestack_ix = c->scopestack_ix; |
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305 | PL_scopestack_max = c->scopestack_max; |
|
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306 | PL_savestack = c->savestack; |
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307 | PL_savestack_ix = c->savestack_ix; |
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308 | PL_savestack_max = c->savestack_max; |
|
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309 | PL_retstack = c->retstack; |
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310 | PL_retstack_ix = c->retstack_ix; |
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311 | PL_retstack_max = c->retstack_max; |
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312 | PL_curcop = c->curcop; |
|
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313 | PL_top_env = c->top_env; |
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314 | |
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315 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
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316 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
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317 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
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318 | |
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319 | { |
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320 | dSP; |
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321 | CV *cv; |
|
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322 | |
|
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323 | /* now do the ugly restore mess */ |
|
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324 | while ((cv = (CV *)POPs)) |
|
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325 | { |
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326 | AV *padlist = (AV *)POPs; |
|
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327 | |
|
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328 | if (padlist) |
|
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329 | { |
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330 | put_padlist (cv); /* mark this padlist as available */ |
|
|
331 | CvPADLIST(cv) = padlist; |
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332 | #ifdef USE_THREADS |
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333 | /*CvOWNER(cv) = (struct perl_thread *)POPs;*/ |
|
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334 | #endif |
|
|
335 | } |
|
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336 | |
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337 | ++CvDEPTH(cv); |
|
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338 | } |
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|
339 | |
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340 | PUTBACK; |
|
|
341 | } |
|
|
342 | } |
|
|
343 | |
|
|
344 | static void |
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|
345 | save_state(pTHX_ Coro__State c, int flags) |
|
|
346 | { |
|
|
347 | { |
|
|
348 | dSP; |
|
|
349 | I32 cxix = cxstack_ix; |
|
|
350 | PERL_CONTEXT *ccstk = cxstack; |
|
|
351 | PERL_SI *top_si = PL_curstackinfo; |
|
|
352 | |
|
|
353 | /* |
|
|
354 | * the worst thing you can imagine happens first - we have to save |
|
|
355 | * (and reinitialize) all cv's in the whole callchain :( |
|
|
356 | */ |
|
|
357 | |
|
|
358 | PUSHs (Nullsv); |
|
|
359 | /* this loop was inspired by pp_caller */ |
|
|
360 | for (;;) |
|
|
361 | { |
|
|
362 | while (cxix >= 0) |
|
|
363 | { |
|
|
364 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
|
|
365 | |
|
|
366 | if (CxTYPE(cx) == CXt_SUB) |
|
|
367 | { |
|
|
368 | CV *cv = cx->blk_sub.cv; |
|
|
369 | if (CvDEPTH(cv)) |
|
|
370 | { |
|
|
371 | #ifdef USE_THREADS |
|
|
372 | /*XPUSHs ((SV *)CvOWNER(cv));*/ |
|
|
373 | /*CvOWNER(cv) = 0;*/ |
|
|
374 | /*error must unlock this cv etc.. etc...*/ |
|
|
375 | #endif |
|
|
376 | EXTEND (SP, CvDEPTH(cv)*2); |
|
|
377 | |
|
|
378 | while (--CvDEPTH(cv)) |
|
|
379 | { |
|
|
380 | /* this tells the restore code to increment CvDEPTH */ |
|
|
381 | PUSHs (Nullsv); |
|
|
382 | PUSHs ((SV *)cv); |
|
|
383 | } |
|
|
384 | |
|
|
385 | PUSHs ((SV *)CvPADLIST(cv)); |
|
|
386 | PUSHs ((SV *)cv); |
|
|
387 | |
|
|
388 | get_padlist (cv); /* this is a monster */ |
|
|
389 | } |
|
|
390 | } |
|
|
391 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
|
392 | { |
|
|
393 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
394 | /* my bold guess is as a simple, plain sub... */ |
|
|
395 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
396 | } |
|
|
397 | } |
|
|
398 | |
|
|
399 | if (top_si->si_type == PERLSI_MAIN) |
|
|
400 | break; |
|
|
401 | |
|
|
402 | top_si = top_si->si_prev; |
|
|
403 | ccstk = top_si->si_cxstack; |
|
|
404 | cxix = top_si->si_cxix; |
|
|
405 | } |
|
|
406 | |
|
|
407 | PUTBACK; |
|
|
408 | } |
|
|
409 | |
|
|
410 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
|
|
411 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
|
|
412 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
|
|
413 | |
|
|
414 | c->dowarn = PL_dowarn; |
|
|
415 | c->in_eval = PL_in_eval; |
|
|
416 | |
|
|
417 | c->curstackinfo = PL_curstackinfo; |
|
|
418 | c->curstack = PL_curstack; |
|
|
419 | c->mainstack = PL_mainstack; |
|
|
420 | c->stack_sp = PL_stack_sp; |
|
|
421 | c->op = PL_op; |
|
|
422 | c->curpad = PL_curpad; |
|
|
423 | c->stack_base = PL_stack_base; |
|
|
424 | c->stack_max = PL_stack_max; |
|
|
425 | c->tmps_stack = PL_tmps_stack; |
|
|
426 | c->tmps_floor = PL_tmps_floor; |
|
|
427 | c->tmps_ix = PL_tmps_ix; |
|
|
428 | c->tmps_max = PL_tmps_max; |
|
|
429 | c->markstack = PL_markstack; |
|
|
430 | c->markstack_ptr = PL_markstack_ptr; |
|
|
431 | c->markstack_max = PL_markstack_max; |
|
|
432 | c->scopestack = PL_scopestack; |
|
|
433 | c->scopestack_ix = PL_scopestack_ix; |
|
|
434 | c->scopestack_max = PL_scopestack_max; |
|
|
435 | c->savestack = PL_savestack; |
|
|
436 | c->savestack_ix = PL_savestack_ix; |
|
|
437 | c->savestack_max = PL_savestack_max; |
|
|
438 | c->retstack = PL_retstack; |
|
|
439 | c->retstack_ix = PL_retstack_ix; |
|
|
440 | c->retstack_max = PL_retstack_max; |
|
|
441 | c->curcop = PL_curcop; |
|
|
442 | c->top_env = PL_top_env; |
|
|
443 | } |
|
|
444 | |
|
|
445 | /* |
|
|
446 | * allocate various perl stacks. This is an exact copy |
|
|
447 | * of perl.c:init_stacks, except that it uses less memory |
|
|
448 | * on the assumption that coroutines do not usually need |
|
|
449 | * a lot of stackspace. |
|
|
450 | */ |
|
|
451 | STATIC void |
|
|
452 | coro_init_stacks (pTHX) |
|
|
453 | { |
|
|
454 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
455 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
456 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
457 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
458 | |
|
|
459 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
460 | PL_stack_sp = PL_stack_base; |
|
|
461 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
462 | |
|
|
463 | New(50,PL_tmps_stack,96,SV*); |
|
|
464 | PL_tmps_floor = -1; |
|
|
465 | PL_tmps_ix = -1; |
|
|
466 | PL_tmps_max = 96; |
|
|
467 | |
|
|
468 | New(54,PL_markstack,16,I32); |
|
|
469 | PL_markstack_ptr = PL_markstack; |
|
|
470 | PL_markstack_max = PL_markstack + 16; |
|
|
471 | |
|
|
472 | SET_MARK_OFFSET; |
|
|
473 | |
|
|
474 | New(54,PL_scopestack,16,I32); |
|
|
475 | PL_scopestack_ix = 0; |
|
|
476 | PL_scopestack_max = 16; |
|
|
477 | |
|
|
478 | New(54,PL_savestack,96,ANY); |
|
|
479 | PL_savestack_ix = 0; |
|
|
480 | PL_savestack_max = 96; |
|
|
481 | |
|
|
482 | New(54,PL_retstack,8,OP*); |
|
|
483 | PL_retstack_ix = 0; |
|
|
484 | PL_retstack_max = 8; |
|
|
485 | } |
|
|
486 | |
|
|
487 | /* |
|
|
488 | * destroy the stacks, the callchain etc... |
|
|
489 | * still there is a memleak of 128 bytes... |
|
|
490 | */ |
|
|
491 | STATIC void |
|
|
492 | destroy_stacks(pTHX) |
|
|
493 | { |
|
|
494 | if (!IN_DESTRUCT) |
|
|
495 | { |
|
|
496 | /* is this ugly, I ask? */ |
|
|
497 | while (PL_scopestack_ix) |
|
|
498 | LEAVE; |
|
|
499 | |
|
|
500 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
501 | while (PL_tmps_ix > PL_tmps_floor) /* should only ever be one iteration */ |
|
|
502 | FREETMPS; |
|
|
503 | } |
|
|
504 | |
|
|
505 | while (PL_curstackinfo->si_next) |
|
|
506 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
507 | |
|
|
508 | while (PL_curstackinfo) |
|
|
509 | { |
|
|
510 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
511 | |
|
|
512 | { |
|
|
513 | dSP; |
|
|
514 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
515 | PUTBACK; /* possibly superfluous */ |
|
|
516 | } |
|
|
517 | |
|
|
518 | if (!IN_DESTRUCT) |
|
|
519 | { |
|
|
520 | dounwind(-1); |
|
|
521 | SvREFCNT_dec(PL_curstackinfo->si_stack); |
|
|
522 | } |
|
|
523 | |
|
|
524 | Safefree(PL_curstackinfo->si_cxstack); |
|
|
525 | Safefree(PL_curstackinfo); |
|
|
526 | PL_curstackinfo = p; |
|
|
527 | } |
|
|
528 | |
|
|
529 | Safefree(PL_tmps_stack); |
|
|
530 | Safefree(PL_markstack); |
|
|
531 | Safefree(PL_scopestack); |
|
|
532 | Safefree(PL_savestack); |
|
|
533 | Safefree(PL_retstack); |
|
|
534 | } |
|
|
535 | |
|
|
536 | static void |
|
|
537 | allocate_stack (Coro__State ctx, int alloc) |
|
|
538 | { |
|
|
539 | coro_stack *stack; |
|
|
540 | |
|
|
541 | New (0, stack, 1, coro_stack); |
|
|
542 | |
|
|
543 | stack->refcnt = 1; |
|
|
544 | stack->usecnt = 1; |
|
|
545 | stack->gencnt = ctx->gencnt = 0; |
|
|
546 | if (alloc) |
|
|
547 | { |
|
|
548 | #ifdef HAVE_MMAP |
|
|
549 | stack->ssize = 128 * 1024 * sizeof (long); /* mmap should do allocate-on-write for us */ |
|
|
550 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANON, 0, 0); |
|
|
551 | if (stack->sptr == (void *)-1) |
|
|
552 | #endif |
|
|
553 | { |
|
|
554 | /*FIXME*//*D*//* reasonable stack size! */ |
|
|
555 | stack->ssize = -4096 * sizeof (long); |
|
|
556 | New (0, stack->sptr, 4096, long); |
|
|
557 | } |
|
|
558 | } |
|
|
559 | else |
|
|
560 | stack->sptr = 0; |
|
|
561 | |
|
|
562 | ctx->stack = stack; |
|
|
563 | } |
|
|
564 | |
|
|
565 | static void |
|
|
566 | deallocate_stack (Coro__State ctx) |
|
|
567 | { |
|
|
568 | coro_stack *stack = ctx->stack; |
|
|
569 | |
|
|
570 | ctx->stack = 0; |
|
|
571 | |
|
|
572 | if (stack) |
|
|
573 | { |
|
|
574 | if (!--stack->refcnt) |
|
|
575 | { |
|
|
576 | #ifdef HAVE_MMAP |
|
|
577 | if (stack->ssize > 0 && stack->sptr) |
|
|
578 | munmap (stack->sptr, stack->ssize); |
|
|
579 | else |
|
|
580 | #else |
|
|
581 | Safefree (stack->sptr); |
|
|
582 | #endif |
|
|
583 | Safefree (stack); |
|
|
584 | } |
|
|
585 | else if (ctx->gencnt == stack->gencnt) |
|
|
586 | --stack->usecnt; |
|
|
587 | } |
|
|
588 | } |
|
|
589 | |
|
|
590 | static void |
|
|
591 | setup_coro (void *arg) |
|
|
592 | { |
|
|
593 | /* |
|
|
594 | * emulate part of the perl startup here. |
|
|
595 | */ |
|
|
596 | dSP; |
|
|
597 | Coro__State ctx = (Coro__State)arg; |
|
|
598 | SV *sub_init = (SV*)get_cv(SUB_INIT, FALSE); |
|
|
599 | |
|
|
600 | coro_init_stacks (aTHX); |
|
|
601 | /*PL_curcop = 0;*/ |
|
|
602 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
|
|
603 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
604 | GvAV (PL_defgv) = ctx->args; |
|
|
605 | |
|
|
606 | SPAGAIN; |
|
|
607 | |
|
|
608 | if (ctx->stack) |
|
|
609 | { |
|
|
610 | ctx->cursp = 0; |
|
|
611 | |
|
|
612 | PUSHMARK(SP); |
|
|
613 | PUTBACK; |
|
|
614 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
615 | |
|
|
616 | if (SvTRUE (ERRSV)) |
|
|
617 | croak (NULL); |
|
|
618 | else |
|
|
619 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
620 | } |
|
|
621 | else |
|
|
622 | { |
|
|
623 | UNOP myop; |
|
|
624 | |
|
|
625 | PL_op = (OP *)&myop; |
|
|
626 | |
|
|
627 | Zero(&myop, 1, UNOP); |
|
|
628 | myop.op_next = Nullop; |
|
|
629 | myop.op_flags = OPf_WANT_VOID; |
|
|
630 | |
|
|
631 | PUSHMARK(SP); |
|
|
632 | XPUSHs (sub_init); |
|
|
633 | /* |
|
|
634 | * the next line is slightly wrong, as PL_op->op_next |
|
|
635 | * is actually being executed so we skip the first op. |
|
|
636 | * that doesn't matter, though, since it is only |
|
|
637 | * pp_nextstate and we never return... |
|
|
638 | * ah yes, and I don't care anyways ;) |
|
|
639 | */ |
|
|
640 | PUTBACK; |
|
|
641 | PL_op = pp_entersub(); |
|
|
642 | SPAGAIN; |
|
|
643 | |
|
|
644 | ENTER; /* necessary e.g. for dounwind */ |
|
|
645 | } |
|
|
646 | } |
|
|
647 | |
|
|
648 | static void |
|
|
649 | continue_coro (void *arg) |
|
|
650 | { |
|
|
651 | /* |
|
|
652 | * this is a _very_ stripped down perl interpreter ;) |
|
|
653 | */ |
|
|
654 | Coro__State ctx = (Coro__State)arg; |
|
|
655 | JMPENV coro_start_env; |
|
|
656 | |
|
|
657 | /* same as JMPENV_BOOTSTRAP */ |
|
|
658 | Zero(&coro_start_env, 1, JMPENV); |
|
|
659 | coro_start_env.je_ret = -1; |
|
|
660 | coro_start_env.je_mustcatch = TRUE; |
|
|
661 | PL_top_env = &coro_start_env; |
|
|
662 | |
|
|
663 | ctx->cursp = 0; |
|
|
664 | PL_op = PL_op->op_next; |
|
|
665 | CALLRUNOPS(aTHX); |
|
|
666 | |
|
|
667 | abort (); |
|
|
668 | } |
|
|
669 | |
|
|
670 | STATIC void |
|
|
671 | transfer(pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
672 | { |
|
|
673 | dSTACKLEVEL; |
|
|
674 | static struct coro *xnext; |
|
|
675 | |
|
|
676 | if (prev != next) |
|
|
677 | { |
|
|
678 | xnext = next; |
|
|
679 | |
|
|
680 | if (next->mainstack) |
|
|
681 | { |
|
|
682 | SAVE (prev, flags); |
|
|
683 | LOAD (next); |
|
|
684 | |
|
|
685 | /* mark this state as in-use */ |
|
|
686 | next->mainstack = 0; |
|
|
687 | next->tmps_ix = -2; |
|
|
688 | |
|
|
689 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
690 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
691 | { |
|
|
692 | if (!prev->stack) |
|
|
693 | allocate_stack (prev, 0); |
|
|
694 | else if (prev->cursp != stacklevel |
|
|
695 | && prev->stack->usecnt > 1) |
|
|
696 | { |
|
|
697 | prev->gencnt = ++prev->stack->gencnt; |
|
|
698 | prev->stack->usecnt = 1; |
|
|
699 | } |
|
|
700 | |
|
|
701 | /* has our stack been invalidated? */ |
|
|
702 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
703 | { |
|
|
704 | deallocate_stack (next); |
|
|
705 | allocate_stack (next, 1); |
|
|
706 | coro_create (&(next->stack->cctx), |
|
|
707 | continue_coro, (void *)next, |
|
|
708 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
709 | } |
|
|
710 | |
|
|
711 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
712 | /* don't add any code here */ |
|
|
713 | } |
|
|
714 | |
|
|
715 | } |
|
|
716 | else if (next->tmps_ix == -2) |
|
|
717 | croak ("tried to transfer to running coroutine"); |
|
|
718 | else |
|
|
719 | { |
|
|
720 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
721 | |
|
|
722 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
723 | { |
|
|
724 | if (!prev->stack) |
|
|
725 | allocate_stack (prev, 0); |
|
|
726 | |
|
|
727 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
728 | { |
|
|
729 | setup_coro (next); |
|
|
730 | |
|
|
731 | prev->stack->refcnt++; |
|
|
732 | prev->stack->usecnt++; |
|
|
733 | next->stack = prev->stack; |
|
|
734 | next->gencnt = prev->gencnt; |
|
|
735 | } |
|
|
736 | else |
|
|
737 | { |
|
|
738 | allocate_stack (next, 1); |
|
|
739 | coro_create (&(next->stack->cctx), |
|
|
740 | setup_coro, (void *)next, |
|
|
741 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
742 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
743 | /* don't add any code here */ |
|
|
744 | } |
|
|
745 | } |
|
|
746 | else |
|
|
747 | setup_coro (next); |
|
|
748 | } |
|
|
749 | |
|
|
750 | /* |
|
|
751 | * xnext is now either prev or next, depending on wether |
|
|
752 | * we switched the c stack or not. that's why i use a global |
|
|
753 | * variable, that should become thread-specific at one point. |
|
|
754 | */ |
|
|
755 | xnext->cursp = stacklevel; |
|
|
756 | } |
|
|
757 | } |
|
|
758 | |
|
|
759 | static struct coro * |
|
|
760 | sv_to_coro (SV *arg, const char *funcname, const char *varname) |
|
|
761 | { |
|
|
762 | if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV) |
|
|
763 | { |
|
|
764 | HE *he = hv_fetch_ent((HV *)SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash); |
|
|
765 | |
|
|
766 | if (!he) |
|
|
767 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname); |
|
|
768 | |
|
|
769 | arg = HeVAL(he); |
|
|
770 | } |
|
|
771 | |
|
|
772 | /* must also be changed inside Coro::Cont::yield */ |
|
|
773 | if (SvROK(arg) && SvOBJECT(SvRV(arg)) |
|
|
774 | && SvSTASH(SvRV(arg)) == coro_state_stash) |
|
|
775 | return (struct coro *) SvIV((SV*)SvRV(arg)); |
|
|
776 | |
|
|
777 | croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname); |
|
|
778 | /*NORETURN*/ |
|
|
779 | } |
|
|
780 | |
|
|
781 | static void |
|
|
782 | api_transfer(pTHX_ SV *prev, SV *next, int flags) |
|
|
783 | { |
|
|
784 | transfer(aTHX_ |
|
|
785 | sv_to_coro (prev, "Coro::transfer", "prev"), |
|
|
786 | sv_to_coro (next, "Coro::transfer", "next"), |
|
|
787 | flags); |
|
|
788 | } |
|
|
789 | |
247 | |
790 | /** Coro ********************************************************************/ |
248 | /** Coro ********************************************************************/ |
791 | |
249 | |
792 | #define PRIO_MAX 3 |
250 | #define PRIO_MAX 3 |
793 | #define PRIO_HIGH 1 |
251 | #define PRIO_HIGH 1 |
… | |
… | |
795 | #define PRIO_LOW -1 |
253 | #define PRIO_LOW -1 |
796 | #define PRIO_IDLE -3 |
254 | #define PRIO_IDLE -3 |
797 | #define PRIO_MIN -4 |
255 | #define PRIO_MIN -4 |
798 | |
256 | |
799 | /* for Coro.pm */ |
257 | /* for Coro.pm */ |
800 | static GV *coro_current, *coro_idle; |
258 | static SV *coro_current; |
801 | static AV *coro_ready[PRIO_MAX-PRIO_MIN+1]; |
259 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
802 | static int coro_nready; |
260 | static int coro_nready; |
|
|
261 | static struct coro *coro_first; |
803 | |
262 | |
804 | static void |
263 | /** lowlevel stuff **********************************************************/ |
805 | coro_enq (SV *sv) |
264 | |
|
|
265 | static SV * |
|
|
266 | coro_get_sv (const char *name, int create) |
806 | { |
267 | { |
807 | if (SvROK (sv)) |
268 | #if PERL_VERSION_ATLEAST (5,9,0) |
|
|
269 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
270 | get_sv (name, create); |
|
|
271 | #endif |
|
|
272 | return get_sv (name, create); |
|
|
273 | } |
|
|
274 | |
|
|
275 | static AV * |
|
|
276 | coro_get_av (const char *name, int create) |
|
|
277 | { |
|
|
278 | #if PERL_VERSION_ATLEAST (5,9,0) |
|
|
279 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
280 | get_av (name, create); |
|
|
281 | #endif |
|
|
282 | return get_av (name, create); |
|
|
283 | } |
|
|
284 | |
|
|
285 | static HV * |
|
|
286 | coro_get_hv (const char *name, int create) |
|
|
287 | { |
|
|
288 | #if PERL_VERSION_ATLEAST (5,9,0) |
|
|
289 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
|
|
290 | get_hv (name, create); |
|
|
291 | #endif |
|
|
292 | return get_hv (name, create); |
|
|
293 | } |
|
|
294 | |
|
|
295 | static AV * |
|
|
296 | coro_clone_padlist (pTHX_ CV *cv) |
|
|
297 | { |
|
|
298 | AV *padlist = CvPADLIST (cv); |
|
|
299 | AV *newpadlist, *newpad; |
|
|
300 | |
|
|
301 | newpadlist = newAV (); |
|
|
302 | AvREAL_off (newpadlist); |
|
|
303 | #if PERL_VERSION_ATLEAST (5,9,0) |
|
|
304 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
|
|
305 | #else |
|
|
306 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
|
|
307 | #endif |
|
|
308 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
|
|
309 | --AvFILLp (padlist); |
|
|
310 | |
|
|
311 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
|
|
312 | av_store (newpadlist, 1, (SV *)newpad); |
|
|
313 | |
|
|
314 | return newpadlist; |
|
|
315 | } |
|
|
316 | |
|
|
317 | static void |
|
|
318 | free_padlist (pTHX_ AV *padlist) |
|
|
319 | { |
|
|
320 | /* may be during global destruction */ |
|
|
321 | if (SvREFCNT (padlist)) |
808 | { |
322 | { |
809 | SV *hv = SvRV (sv); |
323 | I32 i = AvFILLp (padlist); |
810 | if (SvTYPE (hv) == SVt_PVHV) |
324 | while (i >= 0) |
811 | { |
325 | { |
812 | SV **xprio = hv_fetch ((HV *)hv, "prio", 4, 0); |
326 | SV **svp = av_fetch (padlist, i--, FALSE); |
813 | int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
327 | if (svp) |
|
|
328 | { |
|
|
329 | SV *sv; |
|
|
330 | while (&PL_sv_undef != (sv = av_pop ((AV *)*svp))) |
|
|
331 | SvREFCNT_dec (sv); |
814 | |
332 | |
815 | prio = prio > PRIO_MAX ? PRIO_MAX |
333 | SvREFCNT_dec (*svp); |
816 | : prio < PRIO_MIN ? PRIO_MIN |
334 | } |
817 | : prio; |
|
|
818 | |
|
|
819 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
820 | coro_nready++; |
|
|
821 | |
|
|
822 | return; |
|
|
823 | } |
335 | } |
|
|
336 | |
|
|
337 | SvREFCNT_dec ((SV*)padlist); |
|
|
338 | } |
|
|
339 | } |
|
|
340 | |
|
|
341 | static int |
|
|
342 | coro_cv_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
343 | { |
|
|
344 | AV *padlist; |
|
|
345 | AV *av = (AV *)mg->mg_obj; |
|
|
346 | |
|
|
347 | /* casting is fun. */ |
|
|
348 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
|
|
349 | free_padlist (aTHX_ padlist); |
|
|
350 | |
|
|
351 | SvREFCNT_dec (av); |
|
|
352 | |
|
|
353 | return 0; |
|
|
354 | } |
|
|
355 | |
|
|
356 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
|
|
357 | |
|
|
358 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
|
|
359 | |
|
|
360 | #define CORO_MAGIC(cv) \ |
|
|
361 | SvMAGIC (cv) \ |
|
|
362 | ? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \ |
|
|
363 | ? SvMAGIC (cv) \ |
|
|
364 | : mg_find ((SV *)cv, PERL_MAGIC_coro) \ |
|
|
365 | : 0 |
|
|
366 | |
|
|
367 | static struct coro * |
|
|
368 | SvSTATE_ (pTHX_ SV *coro) |
|
|
369 | { |
|
|
370 | HV *stash; |
|
|
371 | MAGIC *mg; |
|
|
372 | |
|
|
373 | if (SvROK (coro)) |
|
|
374 | coro = SvRV (coro); |
|
|
375 | |
|
|
376 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
|
377 | croak ("Coro::State object required"); |
|
|
378 | |
|
|
379 | stash = SvSTASH (coro); |
|
|
380 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
|
381 | { |
|
|
382 | /* very slow, but rare, check */ |
|
|
383 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
|
384 | croak ("Coro::State object required"); |
|
|
385 | } |
|
|
386 | |
|
|
387 | mg = CORO_MAGIC (coro); |
|
|
388 | return (struct coro *)mg->mg_ptr; |
|
|
389 | } |
|
|
390 | |
|
|
391 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
|
|
392 | |
|
|
393 | /* the next two functions merely cache the padlists */ |
|
|
394 | static void |
|
|
395 | get_padlist (pTHX_ CV *cv) |
|
|
396 | { |
|
|
397 | MAGIC *mg = CORO_MAGIC (cv); |
|
|
398 | AV *av; |
|
|
399 | |
|
|
400 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
|
|
401 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
|
|
402 | else |
|
|
403 | { |
|
|
404 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
405 | /* this is probably cleaner, but also slower? */ |
|
|
406 | CV *cp = Perl_cv_clone (cv); |
|
|
407 | CvPADLIST (cv) = CvPADLIST (cp); |
|
|
408 | CvPADLIST (cp) = 0; |
|
|
409 | SvREFCNT_dec (cp); |
|
|
410 | #else |
|
|
411 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
|
|
412 | #endif |
824 | } |
413 | } |
|
|
414 | } |
825 | |
415 | |
826 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
416 | static void |
|
|
417 | put_padlist (pTHX_ CV *cv) |
|
|
418 | { |
|
|
419 | MAGIC *mg = CORO_MAGIC (cv); |
|
|
420 | AV *av; |
|
|
421 | |
|
|
422 | if (expect_false (!mg)) |
|
|
423 | { |
|
|
424 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
|
|
425 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
|
426 | mg->mg_virtual = &vtbl_coro; |
|
|
427 | mg->mg_obj = (SV *)newAV (); |
|
|
428 | } |
|
|
429 | |
|
|
430 | av = (AV *)mg->mg_obj; |
|
|
431 | |
|
|
432 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
|
|
433 | av_extend (av, AvMAX (av) + 1); |
|
|
434 | |
|
|
435 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
|
|
436 | } |
|
|
437 | |
|
|
438 | /** load & save, init *******************************************************/ |
|
|
439 | |
|
|
440 | static void |
|
|
441 | load_perl (pTHX_ Coro__State c) |
|
|
442 | { |
|
|
443 | perl_slots *slot = c->slot; |
|
|
444 | c->slot = 0; |
|
|
445 | |
|
|
446 | PL_mainstack = c->mainstack; |
|
|
447 | |
|
|
448 | GvSV (PL_defgv) = slot->defsv; |
|
|
449 | GvAV (PL_defgv) = slot->defav; |
|
|
450 | GvSV (PL_errgv) = slot->errsv; |
|
|
451 | GvSV (irsgv) = slot->irsgv; |
|
|
452 | |
|
|
453 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
454 | # include "state.h" |
|
|
455 | #undef VAR |
|
|
456 | |
|
|
457 | /*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/ |
|
|
458 | /*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/ |
|
|
459 | |
|
|
460 | { |
|
|
461 | dSP; |
|
|
462 | |
|
|
463 | CV *cv; |
|
|
464 | |
|
|
465 | /* now do the ugly restore mess */ |
|
|
466 | while (expect_true (cv = (CV *)POPs)) |
|
|
467 | { |
|
|
468 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
|
|
469 | CvDEPTH (cv) = PTR2IV (POPs); |
|
|
470 | CvPADLIST (cv) = (AV *)POPs; |
|
|
471 | } |
|
|
472 | |
|
|
473 | PUTBACK; |
|
|
474 | } |
|
|
475 | } |
|
|
476 | |
|
|
477 | static void |
|
|
478 | save_perl (pTHX_ Coro__State c) |
|
|
479 | { |
|
|
480 | { |
|
|
481 | dSP; |
|
|
482 | I32 cxix = cxstack_ix; |
|
|
483 | PERL_CONTEXT *ccstk = cxstack; |
|
|
484 | PERL_SI *top_si = PL_curstackinfo; |
|
|
485 | |
|
|
486 | /* |
|
|
487 | * the worst thing you can imagine happens first - we have to save |
|
|
488 | * (and reinitialize) all cv's in the whole callchain :( |
|
|
489 | */ |
|
|
490 | |
|
|
491 | XPUSHs (Nullsv); |
|
|
492 | /* this loop was inspired by pp_caller */ |
|
|
493 | for (;;) |
|
|
494 | { |
|
|
495 | while (expect_true (cxix >= 0)) |
|
|
496 | { |
|
|
497 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
|
|
498 | |
|
|
499 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
|
|
500 | { |
|
|
501 | CV *cv = cx->blk_sub.cv; |
|
|
502 | |
|
|
503 | if (expect_true (CvDEPTH (cv))) |
|
|
504 | { |
|
|
505 | EXTEND (SP, 3); |
|
|
506 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
507 | PUSHs (INT2PTR (SV *, CvDEPTH (cv))); |
|
|
508 | PUSHs ((SV *)cv); |
|
|
509 | |
|
|
510 | CvDEPTH (cv) = 0; |
|
|
511 | get_padlist (aTHX_ cv); |
|
|
512 | } |
|
|
513 | } |
|
|
514 | } |
|
|
515 | |
|
|
516 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
|
|
517 | break; |
|
|
518 | |
|
|
519 | top_si = top_si->si_prev; |
|
|
520 | ccstk = top_si->si_cxstack; |
|
|
521 | cxix = top_si->si_cxix; |
|
|
522 | } |
|
|
523 | |
|
|
524 | PUTBACK; |
|
|
525 | } |
|
|
526 | |
|
|
527 | /* allocate some space on the context stack for our purposes */ |
|
|
528 | /* we manually unroll here, as usually 2 slots is enough */ |
|
|
529 | if (SLOT_COUNT >= 1) CXINC; |
|
|
530 | if (SLOT_COUNT >= 2) CXINC; |
|
|
531 | if (SLOT_COUNT >= 3) CXINC; |
|
|
532 | { |
|
|
533 | int i; |
|
|
534 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
535 | CXINC; |
|
|
536 | } |
|
|
537 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
|
|
538 | |
|
|
539 | c->mainstack = PL_mainstack; |
|
|
540 | |
|
|
541 | { |
|
|
542 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
|
|
543 | |
|
|
544 | slot->defav = GvAV (PL_defgv); |
|
|
545 | slot->defsv = DEFSV; |
|
|
546 | slot->errsv = ERRSV; |
|
|
547 | slot->irsgv = GvSV (irsgv); |
|
|
548 | |
|
|
549 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
550 | # include "state.h" |
|
|
551 | #undef VAR |
|
|
552 | } |
|
|
553 | } |
|
|
554 | |
|
|
555 | /* |
|
|
556 | * allocate various perl stacks. This is an exact copy |
|
|
557 | * of perl.c:init_stacks, except that it uses less memory |
|
|
558 | * on the (sometimes correct) assumption that coroutines do |
|
|
559 | * not usually need a lot of stackspace. |
|
|
560 | */ |
|
|
561 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
562 | # define coro_init_stacks init_stacks |
|
|
563 | #else |
|
|
564 | static void |
|
|
565 | coro_init_stacks (pTHX) |
|
|
566 | { |
|
|
567 | PL_curstackinfo = new_stackinfo(32, 8); |
|
|
568 | PL_curstackinfo->si_type = PERLSI_MAIN; |
|
|
569 | PL_curstack = PL_curstackinfo->si_stack; |
|
|
570 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
|
|
571 | |
|
|
572 | PL_stack_base = AvARRAY(PL_curstack); |
|
|
573 | PL_stack_sp = PL_stack_base; |
|
|
574 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
|
|
575 | |
|
|
576 | New(50,PL_tmps_stack,32,SV*); |
|
|
577 | PL_tmps_floor = -1; |
|
|
578 | PL_tmps_ix = -1; |
|
|
579 | PL_tmps_max = 32; |
|
|
580 | |
|
|
581 | New(54,PL_markstack,16,I32); |
|
|
582 | PL_markstack_ptr = PL_markstack; |
|
|
583 | PL_markstack_max = PL_markstack + 16; |
|
|
584 | |
|
|
585 | #ifdef SET_MARK_OFFSET |
|
|
586 | SET_MARK_OFFSET; |
|
|
587 | #endif |
|
|
588 | |
|
|
589 | New(54,PL_scopestack,8,I32); |
|
|
590 | PL_scopestack_ix = 0; |
|
|
591 | PL_scopestack_max = 8; |
|
|
592 | |
|
|
593 | New(54,PL_savestack,24,ANY); |
|
|
594 | PL_savestack_ix = 0; |
|
|
595 | PL_savestack_max = 24; |
|
|
596 | |
|
|
597 | #if !PERL_VERSION_ATLEAST (5,9,0) |
|
|
598 | New(54,PL_retstack,4,OP*); |
|
|
599 | PL_retstack_ix = 0; |
|
|
600 | PL_retstack_max = 4; |
|
|
601 | #endif |
|
|
602 | } |
|
|
603 | #endif |
|
|
604 | |
|
|
605 | /* |
|
|
606 | * destroy the stacks, the callchain etc... |
|
|
607 | */ |
|
|
608 | static void |
|
|
609 | coro_destroy_stacks (pTHX) |
|
|
610 | { |
|
|
611 | while (PL_curstackinfo->si_next) |
|
|
612 | PL_curstackinfo = PL_curstackinfo->si_next; |
|
|
613 | |
|
|
614 | while (PL_curstackinfo) |
|
|
615 | { |
|
|
616 | PERL_SI *p = PL_curstackinfo->si_prev; |
|
|
617 | |
|
|
618 | if (!IN_DESTRUCT) |
|
|
619 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
|
|
620 | |
|
|
621 | Safefree (PL_curstackinfo->si_cxstack); |
|
|
622 | Safefree (PL_curstackinfo); |
|
|
623 | PL_curstackinfo = p; |
|
|
624 | } |
|
|
625 | |
|
|
626 | Safefree (PL_tmps_stack); |
|
|
627 | Safefree (PL_markstack); |
|
|
628 | Safefree (PL_scopestack); |
|
|
629 | Safefree (PL_savestack); |
|
|
630 | #if !PERL_VERSION_ATLEAST (5,9,0) |
|
|
631 | Safefree (PL_retstack); |
|
|
632 | #endif |
|
|
633 | } |
|
|
634 | |
|
|
635 | static size_t |
|
|
636 | coro_rss (pTHX_ struct coro *coro) |
|
|
637 | { |
|
|
638 | size_t rss = sizeof (*coro); |
|
|
639 | |
|
|
640 | if (coro->mainstack) |
|
|
641 | { |
|
|
642 | perl_slots tmp_slot; |
|
|
643 | perl_slots *slot; |
|
|
644 | |
|
|
645 | if (coro->flags & CF_RUNNING) |
|
|
646 | { |
|
|
647 | slot = &tmp_slot; |
|
|
648 | |
|
|
649 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
650 | # include "state.h" |
|
|
651 | #undef VAR |
|
|
652 | } |
|
|
653 | else |
|
|
654 | slot = coro->slot; |
|
|
655 | |
|
|
656 | rss += sizeof (slot->curstackinfo); |
|
|
657 | rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
|
|
658 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
|
|
659 | rss += slot->tmps_max * sizeof (SV *); |
|
|
660 | rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
|
|
661 | rss += slot->scopestack_max * sizeof (I32); |
|
|
662 | rss += slot->savestack_max * sizeof (ANY); |
|
|
663 | |
|
|
664 | #if !PERL_VERSION_ATLEAST (5,9,0) |
|
|
665 | rss += slot->retstack_max * sizeof (OP *); |
|
|
666 | #endif |
|
|
667 | } |
|
|
668 | |
|
|
669 | return rss; |
|
|
670 | } |
|
|
671 | |
|
|
672 | /** coroutine stack handling ************************************************/ |
|
|
673 | |
|
|
674 | static void |
|
|
675 | coro_setup (pTHX_ struct coro *coro) |
|
|
676 | { |
|
|
677 | /* |
|
|
678 | * emulate part of the perl startup here. |
|
|
679 | */ |
|
|
680 | coro_init_stacks (aTHX); |
|
|
681 | |
|
|
682 | PL_runops = RUNOPS_DEFAULT; |
|
|
683 | PL_curcop = &PL_compiling; |
|
|
684 | PL_in_eval = EVAL_NULL; |
|
|
685 | PL_comppad = 0; |
|
|
686 | PL_curpm = 0; |
|
|
687 | PL_curpad = 0; |
|
|
688 | PL_localizing = 0; |
|
|
689 | PL_dirty = 0; |
|
|
690 | PL_restartop = 0; |
|
|
691 | PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); |
|
|
692 | PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); |
|
|
693 | |
|
|
694 | GvSV (PL_defgv) = newSV (0); |
|
|
695 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
696 | GvSV (PL_errgv) = newSV (0); |
|
|
697 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
698 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
699 | PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv); |
|
|
700 | |
|
|
701 | { |
|
|
702 | dSP; |
|
|
703 | LOGOP myop; |
|
|
704 | |
|
|
705 | Zero (&myop, 1, LOGOP); |
|
|
706 | myop.op_next = Nullop; |
|
|
707 | myop.op_flags = OPf_WANT_VOID; |
|
|
708 | |
|
|
709 | PUSHMARK (SP); |
|
|
710 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
|
|
711 | PUTBACK; |
|
|
712 | PL_op = (OP *)&myop; |
|
|
713 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
714 | SPAGAIN; |
|
|
715 | } |
|
|
716 | |
|
|
717 | ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */ |
|
|
718 | } |
|
|
719 | |
|
|
720 | static void |
|
|
721 | coro_destroy (pTHX_ struct coro *coro) |
|
|
722 | { |
|
|
723 | if (!IN_DESTRUCT) |
|
|
724 | { |
|
|
725 | /* restore all saved variables and stuff */ |
|
|
726 | LEAVE_SCOPE (0); |
|
|
727 | assert (PL_tmps_floor == -1); |
|
|
728 | |
|
|
729 | /* free all temporaries */ |
|
|
730 | FREETMPS; |
|
|
731 | assert (PL_tmps_ix == -1); |
|
|
732 | |
|
|
733 | /* unwind all extra stacks */ |
|
|
734 | POPSTACK_TO (PL_mainstack); |
|
|
735 | |
|
|
736 | /* unwind main stack */ |
|
|
737 | dounwind (-1); |
|
|
738 | } |
|
|
739 | |
|
|
740 | SvREFCNT_dec (GvSV (PL_defgv)); |
|
|
741 | SvREFCNT_dec (GvAV (PL_defgv)); |
|
|
742 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
743 | SvREFCNT_dec (PL_defoutgv); |
|
|
744 | SvREFCNT_dec (PL_rs); |
|
|
745 | SvREFCNT_dec (GvSV (irsgv)); |
|
|
746 | |
|
|
747 | SvREFCNT_dec (PL_diehook); |
|
|
748 | SvREFCNT_dec (PL_warnhook); |
|
|
749 | |
|
|
750 | SvREFCNT_dec (coro->saved_deffh); |
|
|
751 | SvREFCNT_dec (coro->throw); |
|
|
752 | |
|
|
753 | coro_destroy_stacks (aTHX); |
|
|
754 | } |
|
|
755 | |
|
|
756 | static void |
|
|
757 | free_coro_mortal (pTHX) |
|
|
758 | { |
|
|
759 | if (expect_true (coro_mortal)) |
|
|
760 | { |
|
|
761 | SvREFCNT_dec (coro_mortal); |
|
|
762 | coro_mortal = 0; |
|
|
763 | } |
|
|
764 | } |
|
|
765 | |
|
|
766 | static int |
|
|
767 | runops_trace (pTHX) |
|
|
768 | { |
|
|
769 | COP *oldcop = 0; |
|
|
770 | int oldcxix = -2; |
|
|
771 | struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
|
|
772 | coro_cctx *cctx = coro->cctx; |
|
|
773 | |
|
|
774 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
775 | { |
|
|
776 | PERL_ASYNC_CHECK (); |
|
|
777 | |
|
|
778 | if (cctx->flags & CC_TRACE_ALL) |
|
|
779 | { |
|
|
780 | if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
|
|
781 | { |
|
|
782 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
783 | SV **bot, **top; |
|
|
784 | AV *av = newAV (); /* return values */ |
|
|
785 | SV **cb; |
|
|
786 | dSP; |
|
|
787 | |
|
|
788 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
789 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
790 | if (isGV (gv)) |
|
|
791 | gv_efullname3 (fullname, gv, 0); |
|
|
792 | |
|
|
793 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
794 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
795 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
796 | : bot; |
|
|
797 | |
|
|
798 | av_extend (av, top - bot); |
|
|
799 | while (bot < top) |
|
|
800 | av_push (av, SvREFCNT_inc (*bot++)); |
|
|
801 | |
|
|
802 | PL_runops = RUNOPS_DEFAULT; |
|
|
803 | ENTER; |
|
|
804 | SAVETMPS; |
|
|
805 | EXTEND (SP, 3); |
|
|
806 | PUSHMARK (SP); |
|
|
807 | PUSHs (&PL_sv_no); |
|
|
808 | PUSHs (fullname); |
|
|
809 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
810 | PUTBACK; |
|
|
811 | cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); |
|
|
812 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
813 | SPAGAIN; |
|
|
814 | FREETMPS; |
|
|
815 | LEAVE; |
|
|
816 | PL_runops = runops_trace; |
|
|
817 | } |
|
|
818 | |
|
|
819 | if (oldcop != PL_curcop) |
|
|
820 | { |
|
|
821 | oldcop = PL_curcop; |
|
|
822 | |
|
|
823 | if (PL_curcop != &PL_compiling) |
|
|
824 | { |
|
|
825 | SV **cb; |
|
|
826 | |
|
|
827 | if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
|
|
828 | { |
|
|
829 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
|
|
830 | |
|
|
831 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
|
|
832 | { |
|
|
833 | runops_proc_t old_runops = PL_runops; |
|
|
834 | dSP; |
|
|
835 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
836 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
837 | |
|
|
838 | if (isGV (gv)) |
|
|
839 | gv_efullname3 (fullname, gv, 0); |
|
|
840 | |
|
|
841 | PL_runops = RUNOPS_DEFAULT; |
|
|
842 | ENTER; |
|
|
843 | SAVETMPS; |
|
|
844 | EXTEND (SP, 3); |
|
|
845 | PUSHMARK (SP); |
|
|
846 | PUSHs (&PL_sv_yes); |
|
|
847 | PUSHs (fullname); |
|
|
848 | PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
849 | PUTBACK; |
|
|
850 | cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0); |
|
|
851 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
852 | SPAGAIN; |
|
|
853 | FREETMPS; |
|
|
854 | LEAVE; |
|
|
855 | PL_runops = runops_trace; |
|
|
856 | } |
|
|
857 | |
|
|
858 | oldcxix = cxstack_ix; |
|
|
859 | } |
|
|
860 | |
|
|
861 | if (cctx->flags & CC_TRACE_LINE) |
|
|
862 | { |
|
|
863 | dSP; |
|
|
864 | |
|
|
865 | PL_runops = RUNOPS_DEFAULT; |
|
|
866 | ENTER; |
|
|
867 | SAVETMPS; |
|
|
868 | EXTEND (SP, 3); |
|
|
869 | PL_runops = RUNOPS_DEFAULT; |
|
|
870 | PUSHMARK (SP); |
|
|
871 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
872 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
873 | PUTBACK; |
|
|
874 | cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0); |
|
|
875 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
876 | SPAGAIN; |
|
|
877 | FREETMPS; |
|
|
878 | LEAVE; |
|
|
879 | PL_runops = runops_trace; |
|
|
880 | } |
|
|
881 | } |
|
|
882 | } |
|
|
883 | } |
|
|
884 | } |
|
|
885 | |
|
|
886 | TAINT_NOT; |
|
|
887 | return 0; |
|
|
888 | } |
|
|
889 | |
|
|
890 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
891 | /* _cctx_init should be careful, as it could be called at almost any time */ |
|
|
892 | /* during execution of a perl program */ |
|
|
893 | static void NOINLINE |
|
|
894 | cctx_prepare (pTHX_ coro_cctx *cctx) |
|
|
895 | { |
|
|
896 | dSP; |
|
|
897 | LOGOP myop; |
|
|
898 | |
|
|
899 | PL_top_env = &PL_start_env; |
|
|
900 | |
|
|
901 | if (cctx->flags & CC_TRACE) |
|
|
902 | PL_runops = runops_trace; |
|
|
903 | |
|
|
904 | Zero (&myop, 1, LOGOP); |
|
|
905 | myop.op_next = PL_op; |
|
|
906 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
|
|
907 | |
|
|
908 | PUSHMARK (SP); |
|
|
909 | EXTEND (SP, 2); |
|
|
910 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
|
|
911 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
912 | PUTBACK; |
|
|
913 | PL_op = (OP *)&myop; |
|
|
914 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
915 | SPAGAIN; |
|
|
916 | } |
|
|
917 | |
|
|
918 | /* |
|
|
919 | * this is a _very_ stripped down perl interpreter ;) |
|
|
920 | */ |
|
|
921 | static void |
|
|
922 | cctx_run (void *arg) |
|
|
923 | { |
|
|
924 | dTHX; |
|
|
925 | |
|
|
926 | /* cctx_run is the alternative tail of transfer(), so unlock here. */ |
|
|
927 | UNLOCK; |
|
|
928 | |
|
|
929 | /* we now skip the entersub that lead to transfer() */ |
|
|
930 | PL_op = PL_op->op_next; |
|
|
931 | |
|
|
932 | /* inject a fake subroutine call to cctx_init */ |
|
|
933 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
|
|
934 | |
|
|
935 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
936 | PL_restartop = PL_op; |
|
|
937 | perl_run (PL_curinterp); |
|
|
938 | |
|
|
939 | /* |
|
|
940 | * If perl-run returns we assume exit() was being called or the coro |
|
|
941 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
942 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
943 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
944 | * coroutine as Coro has no such concept |
|
|
945 | */ |
|
|
946 | PL_top_env = main_top_env; |
|
|
947 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
948 | } |
|
|
949 | |
|
|
950 | static coro_cctx * |
|
|
951 | cctx_new () |
|
|
952 | { |
|
|
953 | coro_cctx *cctx; |
|
|
954 | void *stack_start; |
|
|
955 | size_t stack_size; |
|
|
956 | |
|
|
957 | ++cctx_count; |
|
|
958 | |
|
|
959 | Newz (0, cctx, 1, coro_cctx); |
|
|
960 | |
|
|
961 | #if HAVE_MMAP |
|
|
962 | cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
963 | /* mmap supposedly does allocate-on-write for us */ |
|
|
964 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
965 | |
|
|
966 | if (cctx->sptr != (void *)-1) |
|
|
967 | { |
|
|
968 | # if CORO_STACKGUARD |
|
|
969 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
970 | # endif |
|
|
971 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
|
|
972 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
973 | cctx->flags |= CC_MAPPED; |
|
|
974 | } |
|
|
975 | else |
|
|
976 | #endif |
|
|
977 | { |
|
|
978 | cctx->ssize = coro_stacksize * (long)sizeof (long); |
|
|
979 | New (0, cctx->sptr, coro_stacksize, long); |
|
|
980 | |
|
|
981 | if (!cctx->sptr) |
|
|
982 | { |
|
|
983 | perror ("FATAL: unable to allocate stack for coroutine"); |
|
|
984 | _exit (EXIT_FAILURE); |
|
|
985 | } |
|
|
986 | |
|
|
987 | stack_start = cctx->sptr; |
|
|
988 | stack_size = cctx->ssize; |
|
|
989 | } |
|
|
990 | |
|
|
991 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
|
|
992 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
993 | |
|
|
994 | return cctx; |
|
|
995 | } |
|
|
996 | |
|
|
997 | static void |
|
|
998 | cctx_destroy (coro_cctx *cctx) |
|
|
999 | { |
|
|
1000 | if (!cctx) |
|
|
1001 | return; |
|
|
1002 | |
|
|
1003 | --cctx_count; |
|
|
1004 | |
|
|
1005 | #if CORO_USE_VALGRIND |
|
|
1006 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1007 | #endif |
|
|
1008 | |
|
|
1009 | #if HAVE_MMAP |
|
|
1010 | if (cctx->flags & CC_MAPPED) |
|
|
1011 | munmap (cctx->sptr, cctx->ssize); |
|
|
1012 | else |
|
|
1013 | #endif |
|
|
1014 | Safefree (cctx->sptr); |
|
|
1015 | |
|
|
1016 | Safefree (cctx); |
|
|
1017 | } |
|
|
1018 | |
|
|
1019 | /* wether this cctx should be destructed */ |
|
|
1020 | #define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) |
|
|
1021 | |
|
|
1022 | static coro_cctx * |
|
|
1023 | cctx_get (pTHX) |
|
|
1024 | { |
|
|
1025 | while (expect_true (cctx_first)) |
|
|
1026 | { |
|
|
1027 | coro_cctx *cctx = cctx_first; |
|
|
1028 | cctx_first = cctx->next; |
|
|
1029 | --cctx_idle; |
|
|
1030 | |
|
|
1031 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1032 | return cctx; |
|
|
1033 | |
|
|
1034 | cctx_destroy (cctx); |
|
|
1035 | } |
|
|
1036 | |
|
|
1037 | return cctx_new (); |
|
|
1038 | } |
|
|
1039 | |
|
|
1040 | static void |
|
|
1041 | cctx_put (coro_cctx *cctx) |
|
|
1042 | { |
|
|
1043 | /* free another cctx if overlimit */ |
|
|
1044 | if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) |
|
|
1045 | { |
|
|
1046 | coro_cctx *first = cctx_first; |
|
|
1047 | cctx_first = first->next; |
|
|
1048 | --cctx_idle; |
|
|
1049 | |
|
|
1050 | cctx_destroy (first); |
|
|
1051 | } |
|
|
1052 | |
|
|
1053 | ++cctx_idle; |
|
|
1054 | cctx->next = cctx_first; |
|
|
1055 | cctx_first = cctx; |
|
|
1056 | } |
|
|
1057 | |
|
|
1058 | /** coroutine switching *****************************************************/ |
|
|
1059 | |
|
|
1060 | static void |
|
|
1061 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1062 | { |
|
|
1063 | if (expect_true (prev != next)) |
|
|
1064 | { |
|
|
1065 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1066 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
|
|
1067 | |
|
|
1068 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1069 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
1070 | |
|
|
1071 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1072 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
1073 | |
|
|
1074 | if ( |
|
|
1075 | #if PERL_VERSION_ATLEAST (5,9,0) |
|
|
1076 | expect_false (PL_parser) |
|
|
1077 | #else |
|
|
1078 | expect_false (PL_lex_state != LEX_NOTPARSING) |
|
|
1079 | #endif |
|
|
1080 | ) |
|
|
1081 | croak ("Coro::State::transfer called while parsing, but this is not supported"); |
|
|
1082 | } |
|
|
1083 | } |
|
|
1084 | |
|
|
1085 | /* always use the TRANSFER macro */ |
|
|
1086 | static void NOINLINE |
|
|
1087 | transfer (pTHX_ struct coro *prev, struct coro *next) |
|
|
1088 | { |
|
|
1089 | dSTACKLEVEL; |
|
|
1090 | |
|
|
1091 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1092 | if (expect_false (!next)) |
|
|
1093 | { |
|
|
1094 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
1095 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1096 | } |
|
|
1097 | else if (expect_true (prev != next)) |
|
|
1098 | { |
|
|
1099 | coro_cctx *prev__cctx; |
|
|
1100 | |
|
|
1101 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1102 | { |
|
|
1103 | /* create a new empty context */ |
|
|
1104 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
1105 | prev->flags &= ~CF_NEW; |
|
|
1106 | prev->flags |= CF_RUNNING; |
|
|
1107 | } |
|
|
1108 | |
|
|
1109 | prev->flags &= ~CF_RUNNING; |
|
|
1110 | next->flags |= CF_RUNNING; |
|
|
1111 | |
|
|
1112 | LOCK; |
|
|
1113 | |
|
|
1114 | if (expect_false (next->flags & CF_NEW)) |
|
|
1115 | { |
|
|
1116 | /* need to start coroutine */ |
|
|
1117 | next->flags &= ~CF_NEW; |
|
|
1118 | /* first get rid of the old state */ |
|
|
1119 | save_perl (aTHX_ prev); |
|
|
1120 | /* setup coroutine call */ |
|
|
1121 | coro_setup (aTHX_ next); |
|
|
1122 | } |
|
|
1123 | else |
|
|
1124 | { |
|
|
1125 | /* coroutine already started */ |
|
|
1126 | save_perl (aTHX_ prev); |
|
|
1127 | load_perl (aTHX_ next); |
|
|
1128 | } |
|
|
1129 | |
|
|
1130 | prev__cctx = prev->cctx; |
|
|
1131 | |
|
|
1132 | /* possibly "free" the cctx */ |
|
|
1133 | if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))) |
|
|
1134 | { |
|
|
1135 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
1136 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
|
|
1137 | |
|
|
1138 | prev->cctx = 0; |
|
|
1139 | |
|
|
1140 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
|
|
1141 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
|
|
1142 | if (expect_false (CCTX_EXPIRED (prev__cctx))) |
|
|
1143 | if (!next->cctx) |
|
|
1144 | next->cctx = cctx_get (aTHX); |
|
|
1145 | |
|
|
1146 | cctx_put (prev__cctx); |
|
|
1147 | } |
|
|
1148 | |
|
|
1149 | ++next->usecount; |
|
|
1150 | |
|
|
1151 | if (expect_true (!next->cctx)) |
|
|
1152 | next->cctx = cctx_get (aTHX); |
|
|
1153 | |
|
|
1154 | if (expect_false (prev__cctx != next->cctx)) |
|
|
1155 | { |
|
|
1156 | prev__cctx->top_env = PL_top_env; |
|
|
1157 | PL_top_env = next->cctx->top_env; |
|
|
1158 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
1159 | } |
|
|
1160 | |
|
|
1161 | free_coro_mortal (aTHX); |
|
|
1162 | UNLOCK; |
|
|
1163 | |
|
|
1164 | if (expect_false (prev->throw || next->throw)) |
|
|
1165 | { |
|
|
1166 | struct coro *coro = SvSTATE (coro_current); |
|
|
1167 | |
|
|
1168 | if (coro->throw) |
|
|
1169 | { |
|
|
1170 | SV *exception = coro->throw; |
|
|
1171 | coro->throw = 0; |
|
|
1172 | sv_setsv (ERRSV, exception); |
|
|
1173 | croak (0); |
|
|
1174 | } |
|
|
1175 | } |
|
|
1176 | } |
|
|
1177 | } |
|
|
1178 | |
|
|
1179 | struct transfer_args |
|
|
1180 | { |
|
|
1181 | struct coro *prev, *next; |
|
|
1182 | }; |
|
|
1183 | |
|
|
1184 | #define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next) |
|
|
1185 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1186 | |
|
|
1187 | /** high level stuff ********************************************************/ |
|
|
1188 | |
|
|
1189 | static int |
|
|
1190 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1191 | { |
|
|
1192 | if (coro->flags & CF_DESTROYED) |
|
|
1193 | return 0; |
|
|
1194 | |
|
|
1195 | coro->flags |= CF_DESTROYED; |
|
|
1196 | |
|
|
1197 | if (coro->flags & CF_READY) |
|
|
1198 | { |
|
|
1199 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1200 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1201 | LOCK; |
|
|
1202 | --coro_nready; |
|
|
1203 | UNLOCK; |
|
|
1204 | } |
|
|
1205 | else |
|
|
1206 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1207 | |
|
|
1208 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
1209 | { |
|
|
1210 | struct coro temp; |
|
|
1211 | |
|
|
1212 | if (coro->flags & CF_RUNNING) |
|
|
1213 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
1214 | |
|
|
1215 | save_perl (aTHX_ &temp); |
|
|
1216 | load_perl (aTHX_ coro); |
|
|
1217 | |
|
|
1218 | coro_destroy (aTHX_ coro); |
|
|
1219 | |
|
|
1220 | load_perl (aTHX_ &temp); |
|
|
1221 | |
|
|
1222 | coro->slot = 0; |
|
|
1223 | } |
|
|
1224 | |
|
|
1225 | cctx_destroy (coro->cctx); |
|
|
1226 | SvREFCNT_dec (coro->args); |
|
|
1227 | |
|
|
1228 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1229 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1230 | if (coro == coro_first) coro_first = coro->next; |
|
|
1231 | |
|
|
1232 | return 1; |
|
|
1233 | } |
|
|
1234 | |
|
|
1235 | static int |
|
|
1236 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1237 | { |
|
|
1238 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1239 | mg->mg_ptr = 0; |
|
|
1240 | |
|
|
1241 | coro->hv = 0; |
|
|
1242 | |
|
|
1243 | if (--coro->refcnt < 0) |
|
|
1244 | { |
|
|
1245 | coro_state_destroy (aTHX_ coro); |
|
|
1246 | Safefree (coro); |
|
|
1247 | } |
|
|
1248 | |
|
|
1249 | return 0; |
|
|
1250 | } |
|
|
1251 | |
|
|
1252 | static int |
|
|
1253 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1254 | { |
|
|
1255 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1256 | |
|
|
1257 | ++coro->refcnt; |
|
|
1258 | |
|
|
1259 | return 0; |
|
|
1260 | } |
|
|
1261 | |
|
|
1262 | static MGVTBL coro_state_vtbl = { |
|
|
1263 | 0, 0, 0, 0, |
|
|
1264 | coro_state_free, |
|
|
1265 | 0, |
|
|
1266 | #ifdef MGf_DUP |
|
|
1267 | coro_state_dup, |
|
|
1268 | #else |
|
|
1269 | # define MGf_DUP 0 |
|
|
1270 | #endif |
|
|
1271 | }; |
|
|
1272 | |
|
|
1273 | static void |
|
|
1274 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1275 | { |
|
|
1276 | ta->prev = SvSTATE (prev_sv); |
|
|
1277 | ta->next = SvSTATE (next_sv); |
|
|
1278 | TRANSFER_CHECK (*ta); |
|
|
1279 | } |
|
|
1280 | |
|
|
1281 | static void |
|
|
1282 | api_transfer (SV *prev_sv, SV *next_sv) |
|
|
1283 | { |
|
|
1284 | dTHX; |
|
|
1285 | struct transfer_args ta; |
|
|
1286 | |
|
|
1287 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1288 | TRANSFER (ta); |
|
|
1289 | } |
|
|
1290 | |
|
|
1291 | /** Coro ********************************************************************/ |
|
|
1292 | |
|
|
1293 | static void |
|
|
1294 | coro_enq (pTHX_ SV *coro_sv) |
|
|
1295 | { |
|
|
1296 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
827 | } |
1297 | } |
828 | |
1298 | |
829 | static SV * |
1299 | static SV * |
830 | coro_deq (int min_prio) |
1300 | coro_deq (pTHX_ int min_prio) |
831 | { |
1301 | { |
832 | int prio = PRIO_MAX - PRIO_MIN; |
1302 | int prio = PRIO_MAX - PRIO_MIN; |
833 | |
1303 | |
834 | min_prio -= PRIO_MIN; |
1304 | min_prio -= PRIO_MIN; |
835 | if (min_prio < 0) |
1305 | if (min_prio < 0) |
836 | min_prio = 0; |
1306 | min_prio = 0; |
837 | |
1307 | |
838 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
1308 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
839 | if (av_len (coro_ready[prio]) >= 0) |
1309 | if (AvFILLp (coro_ready [prio]) >= 0) |
840 | { |
|
|
841 | coro_nready--; |
|
|
842 | return av_shift (coro_ready[prio]); |
1310 | return av_shift (coro_ready [prio]); |
843 | } |
|
|
844 | |
1311 | |
845 | return 0; |
1312 | return 0; |
846 | } |
1313 | } |
847 | |
1314 | |
848 | static void |
1315 | static int |
849 | api_ready (SV *coro) |
1316 | api_ready (SV *coro_sv) |
850 | { |
1317 | { |
|
|
1318 | dTHX; |
|
|
1319 | struct coro *coro; |
|
|
1320 | |
|
|
1321 | if (SvROK (coro_sv)) |
|
|
1322 | coro_sv = SvRV (coro_sv); |
|
|
1323 | |
|
|
1324 | coro = SvSTATE (coro_sv); |
|
|
1325 | |
|
|
1326 | if (coro->flags & CF_READY) |
|
|
1327 | return 0; |
|
|
1328 | |
|
|
1329 | coro->flags |= CF_READY; |
|
|
1330 | |
|
|
1331 | LOCK; |
851 | coro_enq (SvREFCNT_inc (coro)); |
1332 | coro_enq (aTHX_ SvREFCNT_inc (coro_sv)); |
852 | } |
1333 | ++coro_nready; |
|
|
1334 | UNLOCK; |
853 | |
1335 | |
|
|
1336 | return 1; |
|
|
1337 | } |
|
|
1338 | |
854 | static void |
1339 | static int |
855 | api_schedule (int cede) |
1340 | api_is_ready (SV *coro_sv) |
856 | { |
1341 | { |
|
|
1342 | dTHX; |
|
|
1343 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1344 | } |
|
|
1345 | |
|
|
1346 | static void |
|
|
1347 | prepare_schedule (pTHX_ struct transfer_args *ta) |
|
|
1348 | { |
857 | SV *prev, *next; |
1349 | SV *prev_sv, *next_sv; |
858 | |
1350 | |
|
|
1351 | for (;;) |
|
|
1352 | { |
|
|
1353 | LOCK; |
|
|
1354 | next_sv = coro_deq (aTHX_ PRIO_MIN); |
|
|
1355 | |
|
|
1356 | /* nothing to schedule: call the idle handler */ |
|
|
1357 | if (expect_false (!next_sv)) |
|
|
1358 | { |
|
|
1359 | dSP; |
|
|
1360 | UNLOCK; |
|
|
1361 | |
|
|
1362 | ENTER; |
|
|
1363 | SAVETMPS; |
|
|
1364 | |
|
|
1365 | PUSHMARK (SP); |
|
|
1366 | PUTBACK; |
|
|
1367 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
|
|
1368 | |
|
|
1369 | FREETMPS; |
|
|
1370 | LEAVE; |
|
|
1371 | continue; |
|
|
1372 | } |
|
|
1373 | |
|
|
1374 | ta->next = SvSTATE (next_sv); |
|
|
1375 | |
|
|
1376 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1377 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
|
|
1378 | { |
|
|
1379 | UNLOCK; |
|
|
1380 | SvREFCNT_dec (next_sv); |
|
|
1381 | /* coro_nready is already taken care of by destroy */ |
|
|
1382 | continue; |
|
|
1383 | } |
|
|
1384 | |
|
|
1385 | --coro_nready; |
|
|
1386 | UNLOCK; |
|
|
1387 | break; |
|
|
1388 | } |
|
|
1389 | |
|
|
1390 | /* free this only after the transfer */ |
859 | prev = GvSV (coro_current); |
1391 | prev_sv = SvRV (coro_current); |
|
|
1392 | ta->prev = SvSTATE (prev_sv); |
|
|
1393 | TRANSFER_CHECK (*ta); |
|
|
1394 | assert (ta->next->flags & CF_READY); |
|
|
1395 | ta->next->flags &= ~CF_READY; |
|
|
1396 | SvRV_set (coro_current, next_sv); |
860 | |
1397 | |
861 | if (cede) |
1398 | LOCK; |
862 | coro_enq (SvREFCNT_inc (prev)); |
1399 | free_coro_mortal (aTHX); |
863 | |
1400 | coro_mortal = prev_sv; |
864 | next = coro_deq (PRIO_MIN); |
1401 | UNLOCK; |
865 | |
|
|
866 | if (!next) |
|
|
867 | next = SvREFCNT_inc (GvSV (coro_idle)); |
|
|
868 | |
|
|
869 | GvSV (coro_current) = SvREFCNT_inc (next); |
|
|
870 | transfer (aTHX_ |
|
|
871 | sv_to_coro (prev, "Coro::schedule", "current coroutine"), |
|
|
872 | sv_to_coro (next, "Coro::schedule", "next coroutine"), |
|
|
873 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
874 | SvREFCNT_dec (next); |
|
|
875 | SvREFCNT_dec (prev); |
|
|
876 | } |
1402 | } |
877 | |
1403 | |
|
|
1404 | static void |
|
|
1405 | prepare_cede (pTHX_ struct transfer_args *ta) |
|
|
1406 | { |
|
|
1407 | api_ready (coro_current); |
|
|
1408 | prepare_schedule (aTHX_ ta); |
|
|
1409 | } |
|
|
1410 | |
|
|
1411 | static int |
|
|
1412 | prepare_cede_notself (pTHX_ struct transfer_args *ta) |
|
|
1413 | { |
|
|
1414 | if (coro_nready) |
|
|
1415 | { |
|
|
1416 | SV *prev = SvRV (coro_current); |
|
|
1417 | prepare_schedule (aTHX_ ta); |
|
|
1418 | api_ready (prev); |
|
|
1419 | return 1; |
|
|
1420 | } |
|
|
1421 | else |
|
|
1422 | return 0; |
|
|
1423 | } |
|
|
1424 | |
|
|
1425 | static void |
|
|
1426 | api_schedule (void) |
|
|
1427 | { |
|
|
1428 | dTHX; |
|
|
1429 | struct transfer_args ta; |
|
|
1430 | |
|
|
1431 | prepare_schedule (aTHX_ &ta); |
|
|
1432 | TRANSFER (ta); |
|
|
1433 | } |
|
|
1434 | |
|
|
1435 | static int |
|
|
1436 | api_cede (void) |
|
|
1437 | { |
|
|
1438 | dTHX; |
|
|
1439 | struct transfer_args ta; |
|
|
1440 | |
|
|
1441 | prepare_cede (aTHX_ &ta); |
|
|
1442 | |
|
|
1443 | if (expect_true (ta.prev != ta.next)) |
|
|
1444 | { |
|
|
1445 | TRANSFER (ta); |
|
|
1446 | return 1; |
|
|
1447 | } |
|
|
1448 | else |
|
|
1449 | return 0; |
|
|
1450 | } |
|
|
1451 | |
|
|
1452 | static int |
|
|
1453 | api_cede_notself (void) |
|
|
1454 | { |
|
|
1455 | dTHX; |
|
|
1456 | struct transfer_args ta; |
|
|
1457 | |
|
|
1458 | if (prepare_cede_notself (aTHX_ &ta)) |
|
|
1459 | { |
|
|
1460 | TRANSFER (ta); |
|
|
1461 | return 1; |
|
|
1462 | } |
|
|
1463 | else |
|
|
1464 | return 0; |
|
|
1465 | } |
|
|
1466 | |
|
|
1467 | static void |
|
|
1468 | api_trace (SV *coro_sv, int flags) |
|
|
1469 | { |
|
|
1470 | dTHX; |
|
|
1471 | struct coro *coro = SvSTATE (coro_sv); |
|
|
1472 | |
|
|
1473 | if (flags & CC_TRACE) |
|
|
1474 | { |
|
|
1475 | if (!coro->cctx) |
|
|
1476 | coro->cctx = cctx_new (); |
|
|
1477 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1478 | croak ("cannot enable tracing on coroutine with custom stack"); |
|
|
1479 | |
|
|
1480 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1481 | } |
|
|
1482 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1483 | { |
|
|
1484 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1485 | |
|
|
1486 | if (coro->flags & CF_RUNNING) |
|
|
1487 | PL_runops = RUNOPS_DEFAULT; |
|
|
1488 | else |
|
|
1489 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1490 | } |
|
|
1491 | } |
|
|
1492 | |
878 | MODULE = Coro::State PACKAGE = Coro::State |
1493 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
879 | |
1494 | |
880 | PROTOTYPES: ENABLE |
1495 | PROTOTYPES: DISABLE |
881 | |
1496 | |
882 | BOOT: |
1497 | BOOT: |
883 | { /* {} necessary for stoopid perl-5.6.x */ |
1498 | { |
884 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1499 | #ifdef USE_ITHREADS |
885 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1500 | MUTEX_INIT (&coro_mutex); |
|
|
1501 | #endif |
|
|
1502 | BOOT_PAGESIZE; |
|
|
1503 | |
|
|
1504 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
|
|
1505 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
1506 | |
|
|
1507 | hv_sig = coro_get_hv ("SIG", TRUE); |
|
|
1508 | sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE); |
|
|
1509 | sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE); |
|
|
1510 | |
|
|
1511 | if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0); |
|
|
1512 | if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0); |
|
|
1513 | |
886 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1514 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
887 | |
1515 | |
888 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1516 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
889 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1517 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
890 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1518 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
891 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
1519 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
892 | |
|
|
893 | if (!padlist_cache) |
|
|
894 | padlist_cache = newHV (); |
|
|
895 | |
1520 | |
896 | main_mainstack = PL_mainstack; |
1521 | main_mainstack = PL_mainstack; |
|
|
1522 | main_top_env = PL_top_env; |
|
|
1523 | |
|
|
1524 | while (main_top_env->je_prev) |
|
|
1525 | main_top_env = main_top_env->je_prev; |
897 | |
1526 | |
898 | coroapi.ver = CORO_API_VERSION; |
1527 | coroapi.ver = CORO_API_VERSION; |
899 | coroapi.transfer = api_transfer; |
1528 | coroapi.transfer = api_transfer; |
900 | } |
|
|
901 | |
1529 | |
902 | Coro::State |
1530 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
903 | _newprocess(args) |
1531 | } |
904 | SV * args |
1532 | |
905 | PROTOTYPE: $ |
1533 | SV * |
|
|
1534 | new (char *klass, ...) |
906 | CODE: |
1535 | CODE: |
907 | Coro__State coro; |
1536 | { |
|
|
1537 | struct coro *coro; |
|
|
1538 | HV *hv; |
|
|
1539 | int i; |
908 | |
1540 | |
909 | if (!SvROK (args) || SvTYPE (SvRV (args)) != SVt_PVAV) |
|
|
910 | croak ("Coro::State::_newprocess expects an arrayref"); |
|
|
911 | |
|
|
912 | New (0, coro, 1, struct coro); |
1541 | Newz (0, coro, 1, struct coro); |
|
|
1542 | coro->args = newAV (); |
|
|
1543 | coro->flags = CF_NEW; |
913 | |
1544 | |
914 | coro->args = (AV *)SvREFCNT_inc (SvRV (args)); |
1545 | if (coro_first) coro_first->prev = coro; |
915 | coro->mainstack = 0; /* actual work is done inside transfer */ |
1546 | coro->next = coro_first; |
916 | coro->stack = 0; |
1547 | coro_first = coro; |
917 | |
1548 | |
918 | RETVAL = coro; |
1549 | coro->hv = hv = newHV (); |
|
|
1550 | sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP; |
|
|
1551 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1552 | |
|
|
1553 | av_extend (coro->args, items - 1); |
|
|
1554 | for (i = 1; i < items; i++) |
|
|
1555 | av_push (coro->args, newSVsv (ST (i))); |
|
|
1556 | } |
919 | OUTPUT: |
1557 | OUTPUT: |
920 | RETVAL |
1558 | RETVAL |
921 | |
1559 | |
|
|
1560 | # these not obviously related functions are all rolled into the same xs |
|
|
1561 | # function to increase chances that they all will call transfer with the same |
|
|
1562 | # stack offset |
922 | void |
1563 | void |
923 | transfer(prev, next, flags) |
1564 | _set_stacklevel (...) |
924 | Coro::State_or_hashref prev |
1565 | ALIAS: |
925 | Coro::State_or_hashref next |
1566 | Coro::State::transfer = 1 |
926 | int flags |
1567 | Coro::schedule = 2 |
927 | PROTOTYPE: @ |
1568 | Coro::cede = 3 |
|
|
1569 | Coro::cede_notself = 4 |
928 | CODE: |
1570 | CODE: |
929 | PUTBACK; |
1571 | { |
930 | transfer (aTHX_ prev, next, flags); |
1572 | struct transfer_args ta; |
931 | SPAGAIN; |
1573 | |
|
|
1574 | switch (ix) |
|
|
1575 | { |
|
|
1576 | case 0: |
|
|
1577 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1578 | ta.next = 0; |
|
|
1579 | break; |
|
|
1580 | |
|
|
1581 | case 1: |
|
|
1582 | if (items != 2) |
|
|
1583 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
|
|
1584 | |
|
|
1585 | prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
|
|
1586 | break; |
|
|
1587 | |
|
|
1588 | case 2: |
|
|
1589 | prepare_schedule (aTHX_ &ta); |
|
|
1590 | break; |
|
|
1591 | |
|
|
1592 | case 3: |
|
|
1593 | prepare_cede (aTHX_ &ta); |
|
|
1594 | break; |
|
|
1595 | |
|
|
1596 | case 4: |
|
|
1597 | if (!prepare_cede_notself (aTHX_ &ta)) |
|
|
1598 | XSRETURN_EMPTY; |
|
|
1599 | |
|
|
1600 | break; |
|
|
1601 | } |
|
|
1602 | |
|
|
1603 | BARRIER; |
|
|
1604 | TRANSFER (ta); |
|
|
1605 | |
|
|
1606 | if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev)) |
|
|
1607 | XSRETURN_YES; |
|
|
1608 | } |
|
|
1609 | |
|
|
1610 | bool |
|
|
1611 | _destroy (SV *coro_sv) |
|
|
1612 | CODE: |
|
|
1613 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
|
|
1614 | OUTPUT: |
|
|
1615 | RETVAL |
932 | |
1616 | |
933 | void |
1617 | void |
934 | DESTROY(coro) |
|
|
935 | Coro::State coro |
|
|
936 | CODE: |
|
|
937 | |
|
|
938 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
939 | { |
|
|
940 | struct coro temp; |
|
|
941 | |
|
|
942 | PUTBACK; |
|
|
943 | SAVE(aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
944 | LOAD(aTHX_ coro); |
|
|
945 | SPAGAIN; |
|
|
946 | |
|
|
947 | destroy_stacks (aTHX); |
|
|
948 | |
|
|
949 | LOAD((&temp)); /* this will get rid of defsv etc.. */ |
|
|
950 | SPAGAIN; |
|
|
951 | |
|
|
952 | coro->mainstack = 0; |
|
|
953 | } |
|
|
954 | |
|
|
955 | deallocate_stack (coro); |
|
|
956 | |
|
|
957 | Safefree (coro); |
|
|
958 | |
|
|
959 | void |
|
|
960 | flush() |
|
|
961 | CODE: |
|
|
962 | #ifdef MAY_FLUSH |
|
|
963 | flush_padlist_cache (); |
|
|
964 | #endif |
|
|
965 | |
|
|
966 | void |
|
|
967 | _exit(code) |
1618 | _exit (code) |
968 | int code |
1619 | int code |
969 | PROTOTYPE: $ |
1620 | PROTOTYPE: $ |
970 | CODE: |
1621 | CODE: |
971 | #if defined(__GLIBC__) || _POSIX_C_SOURCE |
|
|
972 | _exit (code); |
1622 | _exit (code); |
973 | #else |
|
|
974 | signal (SIGTERM, SIG_DFL); |
|
|
975 | raise (SIGTERM); |
|
|
976 | exit (code); |
|
|
977 | #endif |
|
|
978 | |
1623 | |
979 | MODULE = Coro::State PACKAGE = Coro::Cont |
1624 | int |
|
|
1625 | cctx_stacksize (int new_stacksize = 0) |
|
|
1626 | CODE: |
|
|
1627 | RETVAL = coro_stacksize; |
|
|
1628 | if (new_stacksize) |
|
|
1629 | coro_stacksize = new_stacksize; |
|
|
1630 | OUTPUT: |
|
|
1631 | RETVAL |
980 | |
1632 | |
981 | # this is slightly dirty (should expose a c-level api) |
1633 | int |
|
|
1634 | cctx_count () |
|
|
1635 | CODE: |
|
|
1636 | RETVAL = cctx_count; |
|
|
1637 | OUTPUT: |
|
|
1638 | RETVAL |
|
|
1639 | |
|
|
1640 | int |
|
|
1641 | cctx_idle () |
|
|
1642 | CODE: |
|
|
1643 | RETVAL = cctx_idle; |
|
|
1644 | OUTPUT: |
|
|
1645 | RETVAL |
982 | |
1646 | |
983 | void |
1647 | void |
984 | yield(...) |
1648 | list () |
985 | PROTOTYPE: @ |
1649 | PPCODE: |
|
|
1650 | { |
|
|
1651 | struct coro *coro; |
|
|
1652 | for (coro = coro_first; coro; coro = coro->next) |
|
|
1653 | if (coro->hv) |
|
|
1654 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
1655 | } |
|
|
1656 | |
|
|
1657 | void |
|
|
1658 | call (Coro::State coro, SV *coderef) |
|
|
1659 | ALIAS: |
|
|
1660 | eval = 1 |
|
|
1661 | CODE: |
|
|
1662 | { |
|
|
1663 | if (coro->mainstack) |
|
|
1664 | { |
|
|
1665 | struct coro temp; |
|
|
1666 | |
|
|
1667 | if (!(coro->flags & CF_RUNNING)) |
|
|
1668 | { |
|
|
1669 | save_perl (aTHX_ &temp); |
|
|
1670 | load_perl (aTHX_ coro); |
|
|
1671 | } |
|
|
1672 | |
|
|
1673 | { |
|
|
1674 | dSP; |
|
|
1675 | ENTER; |
|
|
1676 | SAVETMPS; |
|
|
1677 | PUSHMARK (SP); |
|
|
1678 | PUTBACK; |
|
|
1679 | |
|
|
1680 | if (ix) |
|
|
1681 | eval_sv (coderef, 0); |
|
|
1682 | else |
|
|
1683 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1684 | |
|
|
1685 | SPAGAIN; |
|
|
1686 | FREETMPS; |
|
|
1687 | LEAVE; |
|
|
1688 | PUTBACK; |
|
|
1689 | } |
|
|
1690 | |
|
|
1691 | if (!(coro->flags & CF_RUNNING)) |
|
|
1692 | { |
|
|
1693 | save_perl (aTHX_ coro); |
|
|
1694 | load_perl (aTHX_ &temp); |
|
|
1695 | } |
|
|
1696 | } |
|
|
1697 | } |
|
|
1698 | |
|
|
1699 | SV * |
|
|
1700 | is_ready (Coro::State coro) |
|
|
1701 | PROTOTYPE: $ |
|
|
1702 | ALIAS: |
|
|
1703 | is_ready = CF_READY |
|
|
1704 | is_running = CF_RUNNING |
|
|
1705 | is_new = CF_NEW |
|
|
1706 | is_destroyed = CF_DESTROYED |
|
|
1707 | CODE: |
|
|
1708 | RETVAL = boolSV (coro->flags & ix); |
|
|
1709 | OUTPUT: |
|
|
1710 | RETVAL |
|
|
1711 | |
|
|
1712 | void |
|
|
1713 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
1714 | |
|
|
1715 | SV * |
|
|
1716 | has_stack (Coro::State coro) |
|
|
1717 | PROTOTYPE: $ |
|
|
1718 | CODE: |
|
|
1719 | RETVAL = boolSV (!!coro->cctx); |
|
|
1720 | OUTPUT: |
|
|
1721 | RETVAL |
|
|
1722 | |
|
|
1723 | int |
|
|
1724 | is_traced (Coro::State coro) |
|
|
1725 | PROTOTYPE: $ |
|
|
1726 | CODE: |
|
|
1727 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
1728 | OUTPUT: |
|
|
1729 | RETVAL |
|
|
1730 | |
|
|
1731 | IV |
|
|
1732 | rss (Coro::State coro) |
|
|
1733 | PROTOTYPE: $ |
|
|
1734 | ALIAS: |
|
|
1735 | usecount = 1 |
986 | CODE: |
1736 | CODE: |
987 | static SV *returnstk; |
1737 | switch (ix) |
988 | SV *sv; |
1738 | { |
989 | AV *defav = GvAV (PL_defgv); |
1739 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
990 | struct coro *prev, *next; |
1740 | case 1: RETVAL = coro->usecount; break; |
|
|
1741 | } |
|
|
1742 | OUTPUT: |
|
|
1743 | RETVAL |
991 | |
1744 | |
992 | if (!returnstk) |
|
|
993 | returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE)); |
|
|
994 | |
|
|
995 | /* set up @_ -- ugly */ |
|
|
996 | av_clear (defav); |
|
|
997 | av_fill (defav, items - 1); |
|
|
998 | while (items--) |
|
|
999 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1000 | |
|
|
1001 | mg_get (returnstk); /* isn't documentation wrong for mg_get? */ |
|
|
1002 | sv = av_pop ((AV *)SvRV (returnstk)); |
|
|
1003 | prev = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
|
|
1004 | next = (struct coro *)SvIV ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
|
|
1005 | SvREFCNT_dec (sv); |
|
|
1006 | |
|
|
1007 | transfer(aTHX_ prev, next, 0); |
|
|
1008 | |
1745 | |
1009 | MODULE = Coro::State PACKAGE = Coro |
1746 | MODULE = Coro::State PACKAGE = Coro |
1010 | |
1747 | |
1011 | # this is slightly dirty (should expose a c-level api) |
|
|
1012 | |
|
|
1013 | BOOT: |
1748 | BOOT: |
1014 | { |
1749 | { |
1015 | int i; |
1750 | int i; |
|
|
1751 | |
|
|
1752 | sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE); |
|
|
1753 | sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE); |
|
|
1754 | av_async_pool = coro_get_av ("Coro::async_pool", TRUE); |
|
|
1755 | |
|
|
1756 | coro_current = coro_get_sv ("Coro::current", FALSE); |
|
|
1757 | SvREADONLY_on (coro_current); |
|
|
1758 | |
1016 | HV *stash = gv_stashpv ("Coro", TRUE); |
1759 | coro_stash = gv_stashpv ("Coro", TRUE); |
1017 | |
1760 | |
1018 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1761 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1019 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1762 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1020 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1763 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1021 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1764 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1022 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1765 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1023 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1766 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1024 | |
|
|
1025 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1026 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1027 | |
1767 | |
1028 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1768 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1029 | coro_ready[i] = newAV (); |
1769 | coro_ready[i] = newAV (); |
1030 | |
1770 | |
1031 | { |
1771 | { |
1032 | SV *sv = perl_get_sv("Coro::API", 1); |
1772 | SV *sv = perl_get_sv ("Coro::API", TRUE); |
|
|
1773 | perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */ |
1033 | |
1774 | |
1034 | coroapi.schedule = api_schedule; |
1775 | coroapi.schedule = api_schedule; |
|
|
1776 | coroapi.cede = api_cede; |
|
|
1777 | coroapi.cede_notself = api_cede_notself; |
1035 | coroapi.ready = api_ready; |
1778 | coroapi.ready = api_ready; |
|
|
1779 | coroapi.is_ready = api_is_ready; |
1036 | coroapi.nready = &coro_nready; |
1780 | coroapi.nready = &coro_nready; |
1037 | coroapi.current = coro_current; |
1781 | coroapi.current = coro_current; |
1038 | |
1782 | |
1039 | GCoroAPI = &coroapi; |
1783 | GCoroAPI = &coroapi; |
1040 | sv_setiv(sv, (IV)&coroapi); |
1784 | sv_setiv (sv, (IV)&coroapi); |
1041 | SvREADONLY_on(sv); |
1785 | SvREADONLY_on (sv); |
1042 | } |
1786 | } |
1043 | } |
1787 | } |
1044 | |
1788 | |
1045 | void |
1789 | void |
1046 | ready(self) |
1790 | _set_current (SV *current) |
1047 | SV * self |
|
|
1048 | PROTOTYPE: $ |
1791 | PROTOTYPE: $ |
1049 | CODE: |
1792 | CODE: |
1050 | api_ready (self); |
1793 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
1794 | SvRV_set (coro_current, SvREFCNT_inc (SvRV (current))); |
1051 | |
1795 | |
1052 | int |
1796 | int |
|
|
1797 | prio (Coro::State coro, int newprio = 0) |
|
|
1798 | ALIAS: |
|
|
1799 | nice = 1 |
|
|
1800 | CODE: |
|
|
1801 | { |
|
|
1802 | RETVAL = coro->prio; |
|
|
1803 | |
|
|
1804 | if (items > 1) |
|
|
1805 | { |
|
|
1806 | if (ix) |
|
|
1807 | newprio = coro->prio - newprio; |
|
|
1808 | |
|
|
1809 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
1810 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
1811 | |
|
|
1812 | coro->prio = newprio; |
|
|
1813 | } |
|
|
1814 | } |
|
|
1815 | OUTPUT: |
|
|
1816 | RETVAL |
|
|
1817 | |
|
|
1818 | SV * |
|
|
1819 | ready (SV *self) |
|
|
1820 | PROTOTYPE: $ |
|
|
1821 | CODE: |
|
|
1822 | RETVAL = boolSV (api_ready (self)); |
|
|
1823 | OUTPUT: |
|
|
1824 | RETVAL |
|
|
1825 | |
|
|
1826 | int |
1053 | nready(...) |
1827 | nready (...) |
1054 | PROTOTYPE: |
1828 | PROTOTYPE: |
1055 | CODE: |
1829 | CODE: |
1056 | RETVAL = coro_nready; |
1830 | RETVAL = coro_nready; |
1057 | OUTPUT: |
1831 | OUTPUT: |
1058 | RETVAL |
1832 | RETVAL |
1059 | |
1833 | |
1060 | void |
1834 | void |
1061 | schedule(...) |
1835 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
1062 | PROTOTYPE: |
1836 | PROTOTYPE: $;$ |
1063 | ALIAS: |
1837 | CODE: |
1064 | cede = 1 |
1838 | SvREFCNT_dec (self->throw); |
|
|
1839 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
|
|
1840 | |
|
|
1841 | # for async_pool speedup |
|
|
1842 | void |
|
|
1843 | _pool_1 (SV *cb) |
1065 | CODE: |
1844 | CODE: |
1066 | api_schedule (ix); |
1845 | { |
|
|
1846 | struct coro *coro = SvSTATE (coro_current); |
|
|
1847 | HV *hv = (HV *)SvRV (coro_current); |
|
|
1848 | AV *defav = GvAV (PL_defgv); |
|
|
1849 | SV *invoke = hv_delete (hv, strpair ("_invoke"), 0); |
|
|
1850 | AV *invoke_av; |
|
|
1851 | int i, len; |
1067 | |
1852 | |
|
|
1853 | if (!invoke) |
|
|
1854 | croak ("\3async_pool terminate\2\n"); |
|
|
1855 | |
|
|
1856 | SvREFCNT_dec (coro->saved_deffh); |
|
|
1857 | coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv); |
|
|
1858 | |
|
|
1859 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
1860 | newSVpvn (strpair ("[async_pool]")), 0); |
|
|
1861 | |
|
|
1862 | invoke_av = (AV *)SvRV (invoke); |
|
|
1863 | len = av_len (invoke_av); |
|
|
1864 | |
|
|
1865 | sv_setsv (cb, AvARRAY (invoke_av)[0]); |
|
|
1866 | |
|
|
1867 | if (len > 0) |
|
|
1868 | { |
|
|
1869 | av_fill (defav, len - 1); |
|
|
1870 | for (i = 0; i < len; ++i) |
|
|
1871 | av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1])); |
|
|
1872 | } |
|
|
1873 | |
|
|
1874 | SvREFCNT_dec (invoke); |
|
|
1875 | } |
|
|
1876 | |
|
|
1877 | void |
|
|
1878 | _pool_2 (SV *cb) |
|
|
1879 | CODE: |
|
|
1880 | { |
|
|
1881 | struct coro *coro = SvSTATE (coro_current); |
|
|
1882 | |
|
|
1883 | sv_setsv (cb, &PL_sv_undef); |
|
|
1884 | |
|
|
1885 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
1886 | coro->saved_deffh = 0; |
|
|
1887 | |
|
|
1888 | if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) |
|
|
1889 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
1890 | croak ("\3async_pool terminate\2\n"); |
|
|
1891 | |
|
|
1892 | av_clear (GvAV (PL_defgv)); |
|
|
1893 | hv_store ((HV *)SvRV (coro_current), strpair ("desc"), |
|
|
1894 | newSVpvn (strpair ("[async_pool idle]")), 0); |
|
|
1895 | |
|
|
1896 | coro->prio = 0; |
|
|
1897 | |
|
|
1898 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
1899 | api_trace (coro_current, 0); |
|
|
1900 | |
|
|
1901 | av_push (av_async_pool, newSVsv (coro_current)); |
|
|
1902 | } |
|
|
1903 | |
|
|
1904 | |
|
|
1905 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
1906 | |
|
|
1907 | SV * |
|
|
1908 | _get_state () |
|
|
1909 | CODE: |
|
|
1910 | { |
|
|
1911 | struct io_state *data; |
|
|
1912 | |
|
|
1913 | RETVAL = newSV (sizeof (struct io_state)); |
|
|
1914 | data = (struct io_state *)SvPVX (RETVAL); |
|
|
1915 | SvCUR_set (RETVAL, sizeof (struct io_state)); |
|
|
1916 | SvPOK_only (RETVAL); |
|
|
1917 | |
|
|
1918 | data->errorno = errno; |
|
|
1919 | data->laststype = PL_laststype; |
|
|
1920 | data->laststatval = PL_laststatval; |
|
|
1921 | data->statcache = PL_statcache; |
|
|
1922 | } |
|
|
1923 | OUTPUT: |
|
|
1924 | RETVAL |
|
|
1925 | |
|
|
1926 | void |
|
|
1927 | _set_state (char *data_) |
|
|
1928 | PROTOTYPE: $ |
|
|
1929 | CODE: |
|
|
1930 | { |
|
|
1931 | struct io_state *data = (void *)data_; |
|
|
1932 | |
|
|
1933 | errno = data->errorno; |
|
|
1934 | PL_laststype = data->laststype; |
|
|
1935 | PL_laststatval = data->laststatval; |
|
|
1936 | PL_statcache = data->statcache; |
|
|
1937 | } |
|
|
1938 | |