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1 | #include "libcoro/coro.c" |
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2 | |
1 | #define PERL_NO_GET_CONTEXT |
3 | #define PERL_NO_GET_CONTEXT |
2 | |
4 | #define PERL_EXT |
3 | #include "libcoro/coro.c" |
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4 | |
5 | |
5 | #include "EXTERN.h" |
6 | #include "EXTERN.h" |
6 | #include "perl.h" |
7 | #include "perl.h" |
7 | #include "XSUB.h" |
8 | #include "XSUB.h" |
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9 | #include "perliol.h" |
8 | |
10 | |
9 | #include "patchlevel.h" |
11 | #include "patchlevel.h" |
10 | |
12 | |
11 | #if PERL_VERSION < 6 |
13 | #include <stdio.h> |
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14 | #include <errno.h> |
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15 | #include <assert.h> |
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16 | |
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17 | #ifdef WIN32 |
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18 | # undef setjmp |
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19 | # undef longjmp |
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20 | # undef _exit |
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21 | # define setjmp _setjmp // deep magic, don't ask |
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22 | #else |
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23 | # include <inttypes.h> /* most portable stdint.h */ |
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24 | #endif |
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25 | |
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26 | #ifdef HAVE_MMAP |
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27 | # include <unistd.h> |
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28 | # include <sys/mman.h> |
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29 | # ifndef MAP_ANONYMOUS |
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30 | # ifdef MAP_ANON |
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31 | # define MAP_ANONYMOUS MAP_ANON |
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32 | # else |
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33 | # undef HAVE_MMAP |
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34 | # endif |
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35 | # endif |
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36 | # include <limits.h> |
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37 | # ifndef PAGESIZE |
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38 | # define PAGESIZE pagesize |
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39 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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40 | static long pagesize; |
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41 | # else |
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42 | # define BOOT_PAGESIZE (void)0 |
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43 | # endif |
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44 | #else |
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45 | # define PAGESIZE 0 |
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46 | # define BOOT_PAGESIZE (void)0 |
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47 | #endif |
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48 | |
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49 | #if CORO_USE_VALGRIND |
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50 | # include <valgrind/valgrind.h> |
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51 | # define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end)) |
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52 | #else |
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53 | # define REGISTER_STACK(cctx,start,end) |
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54 | #endif |
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55 | |
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56 | /* the maximum number of idle cctx that will be pooled */ |
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57 | #define MAX_IDLE_CCTX 8 |
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58 | |
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59 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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60 | (PERL_REVISION > (a) \ |
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61 | || (PERL_REVISION == (a) \ |
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62 | && (PERL_VERSION > (b) \ |
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63 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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64 | |
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65 | #if !PERL_VERSION_ATLEAST (5,6,0) |
12 | # ifndef PL_ppaddr |
66 | # ifndef PL_ppaddr |
13 | # define PL_ppaddr ppaddr |
67 | # define PL_ppaddr ppaddr |
14 | # endif |
68 | # endif |
15 | # ifndef call_sv |
69 | # ifndef call_sv |
16 | # define call_sv perl_call_sv |
70 | # define call_sv perl_call_sv |
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… | |
27 | # ifndef IS_PADCONST |
81 | # ifndef IS_PADCONST |
28 | # define IS_PADCONST(v) 0 |
82 | # define IS_PADCONST(v) 0 |
29 | # endif |
83 | # endif |
30 | #endif |
84 | #endif |
31 | |
85 | |
32 | #include <errno.h> |
86 | /* 5.8.8 */ |
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87 | #ifndef GV_NOTQUAL |
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88 | # define GV_NOTQUAL 0 |
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89 | #endif |
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90 | #ifndef newSV |
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91 | # define newSV(l) NEWSV(0,l) |
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92 | #endif |
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93 | #ifndef SvREFCNT_inc_NN |
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94 | # define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv) |
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95 | #endif |
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96 | |
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97 | /* 5.11 */ |
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98 | #ifndef CxHASARGS |
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99 | # define CxHASARGS(cx) (cx)->blk_sub.hasargs |
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100 | #endif |
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101 | |
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102 | /* 5.8.7 */ |
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103 | #ifndef SvRV_set |
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104 | # define SvRV_set(s,v) SvRV(s) = (v) |
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105 | #endif |
33 | |
106 | |
34 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
107 | #if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64 |
35 | # undef STACKGUARD |
108 | # undef CORO_STACKGUARD |
36 | #endif |
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37 | |
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38 | #ifndef STACKGUARD |
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39 | # define STACKGUARD 0 |
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40 | #endif |
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41 | |
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42 | #ifdef HAVE_MMAP |
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43 | # include <unistd.h> |
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44 | # include <sys/mman.h> |
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45 | # ifndef MAP_ANONYMOUS |
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46 | # ifdef MAP_ANON |
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47 | # define MAP_ANONYMOUS MAP_ANON |
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48 | # else |
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49 | # undef HAVE_MMAP |
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50 | # endif |
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51 | # endif |
109 | #endif |
52 | # include <limits.h> |
110 | |
53 | # ifndef PAGESIZE |
111 | #ifndef CORO_STACKGUARD |
54 | # define PAGESIZE pagesize |
112 | # define CORO_STACKGUARD 0 |
55 | # define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE) |
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56 | static long pagesize; |
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57 | # else |
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58 | # define BOOT_PAGESIZE |
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59 | # endif |
113 | #endif |
60 | #endif |
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61 | |
114 | |
62 | #define SUB_INIT "Coro::State::initialize" |
115 | /* prefer perl internal functions over our own? */ |
63 | #define UCORO_STATE "_coro_state" |
116 | #ifndef CORO_PREFER_PERL_FUNCTIONS |
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117 | # define CORO_PREFER_PERL_FUNCTIONS 0 |
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118 | #endif |
64 | |
119 | |
65 | /* The next macro should declare a variable stacklevel that contains and approximation |
120 | /* The next macros try to return the current stack pointer, in an as |
66 | * to the current C stack pointer. Its property is that it changes with each call |
121 | * portable way as possible. */ |
67 | * and should be unique. */ |
122 | #define dSTACKLEVEL volatile char stacklevel |
68 | #define dSTACKLEVEL void *stacklevel = &stacklevel |
123 | #define STACKLEVEL ((void *)&stacklevel) |
69 | |
124 | |
70 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
125 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
71 | |
126 | |
72 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
127 | #if __GNUC__ >= 3 |
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128 | # define attribute(x) __attribute__(x) |
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129 | # define BARRIER __asm__ __volatile__ ("" : : : "memory") |
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130 | # define expect(expr,value) __builtin_expect ((expr),(value)) |
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131 | #else |
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132 | # define attribute(x) |
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133 | # define BARRIER |
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134 | # define expect(expr,value) (expr) |
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135 | #endif |
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136 | |
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137 | #define expect_false(expr) expect ((expr) != 0, 0) |
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138 | #define expect_true(expr) expect ((expr) != 0, 1) |
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139 | |
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140 | #define NOINLINE attribute ((noinline)) |
73 | |
141 | |
74 | #include "CoroAPI.h" |
142 | #include "CoroAPI.h" |
75 | |
143 | |
76 | #ifdef USE_ITHREADS |
144 | #ifdef USE_ITHREADS |
77 | static perl_mutex coro_mutex; |
145 | static perl_mutex coro_mutex; |
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80 | #else |
148 | #else |
81 | # define LOCK (void)0 |
149 | # define LOCK (void)0 |
82 | # define UNLOCK (void)0 |
150 | # define UNLOCK (void)0 |
83 | #endif |
151 | #endif |
84 | |
152 | |
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153 | /* helper storage struct for Coro::AIO */ |
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154 | struct io_state |
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155 | { |
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156 | AV *res; |
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157 | int errorno; |
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158 | I32 laststype; |
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159 | int laststatval; |
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160 | Stat_t statcache; |
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161 | }; |
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162 | |
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163 | static double (*nvtime)(); /* so why doesn't it take void? */ |
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164 | |
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165 | static size_t coro_stacksize = CORO_STACKSIZE; |
85 | static struct CoroAPI coroapi; |
166 | static struct CoroAPI coroapi; |
86 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
167 | static AV *main_mainstack; /* used to differentiate between $main and others */ |
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168 | static JMPENV *main_top_env; |
87 | static HV *coro_state_stash; |
169 | static HV *coro_state_stash, *coro_stash; |
88 | static SV *ucoro_state_sv; |
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89 | static U32 ucoro_state_hash; |
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90 | static SV *coro_mortal; /* will be freed after next transfer */ |
170 | static volatile SV *coro_mortal; /* will be freed after next transfer */ |
91 | |
171 | |
92 | /* this is actually not only the c stack but also c registers etc... */ |
172 | static GV *irsgv; /* $/ */ |
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173 | static GV *stdoutgv; /* *STDOUT */ |
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174 | static SV *rv_diehook; |
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175 | static SV *rv_warnhook; |
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176 | static HV *hv_sig; /* %SIG */ |
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177 | |
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178 | /* async_pool helper stuff */ |
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179 | static SV *sv_pool_rss; |
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180 | static SV *sv_pool_size; |
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181 | static AV *av_async_pool; |
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182 | |
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183 | /* Coro::AnyEvent */ |
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184 | static SV *sv_activity; |
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185 | |
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186 | static struct coro_cctx *cctx_first; |
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187 | static int cctx_count, cctx_idle; |
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188 | |
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189 | enum { |
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190 | CC_MAPPED = 0x01, |
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191 | CC_NOREUSE = 0x02, /* throw this away after tracing */ |
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192 | CC_TRACE = 0x04, |
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193 | CC_TRACE_SUB = 0x08, /* trace sub calls */ |
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194 | CC_TRACE_LINE = 0x10, /* trace each statement */ |
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195 | CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE, |
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196 | }; |
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197 | |
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198 | /* this is a structure representing a c-level coroutine */ |
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199 | typedef struct coro_cctx { |
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200 | struct coro_cctx *next; |
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201 | |
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202 | /* the stack */ |
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203 | void *sptr; |
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204 | size_t ssize; |
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205 | |
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206 | /* cpu state */ |
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207 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
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208 | JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */ |
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209 | JMPENV *top_env; |
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210 | coro_context cctx; |
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211 | |
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212 | #if CORO_USE_VALGRIND |
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213 | int valgrind_id; |
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214 | #endif |
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215 | unsigned char flags; |
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216 | } coro_cctx; |
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217 | |
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218 | enum { |
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219 | CF_RUNNING = 0x0001, /* coroutine is running */ |
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220 | CF_READY = 0x0002, /* coroutine is ready */ |
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221 | CF_NEW = 0x0004, /* has never been switched to */ |
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222 | CF_DESTROYED = 0x0008, /* coroutine data has been freed */ |
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223 | }; |
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224 | |
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225 | /* the structure where most of the perl state is stored, overlaid on the cxstack */ |
93 | typedef struct { |
226 | typedef struct { |
94 | int refcnt; /* pointer reference counter */ |
227 | SV *defsv; |
95 | int usecnt; /* shared by how many coroutines */ |
228 | AV *defav; |
96 | int gencnt; /* generation counter */ |
229 | SV *errsv; |
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230 | SV *irsgv; |
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231 | #define VAR(name,type) type name; |
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232 | # include "state.h" |
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233 | #undef VAR |
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234 | } perl_slots; |
97 | |
235 | |
98 | coro_context cctx; |
236 | #define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT)) |
99 | |
237 | |
100 | void *sptr; |
238 | /* this is a structure representing a perl-level coroutine */ |
101 | long ssize; /* positive == mmap, otherwise malloc */ |
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102 | } coro_stack; |
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103 | |
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104 | struct coro { |
239 | struct coro { |
105 | /* the optional C context */ |
240 | /* the c coroutine allocated to this perl coroutine, if any */ |
106 | coro_stack *stack; |
241 | coro_cctx *cctx; |
107 | void *cursp; |
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108 | int gencnt; |
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109 | |
242 | |
110 | /* optionally saved, might be zero */ |
243 | /* process data */ |
111 | AV *defav; |
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112 | SV *defsv; |
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113 | SV *errsv; |
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114 | |
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115 | /* saved global state not related to stacks */ |
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116 | U8 dowarn; |
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117 | I32 in_eval; |
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118 | |
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119 | /* the stacks and related info (callchain etc..) */ |
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120 | PERL_SI *curstackinfo; |
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121 | AV *curstack; |
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122 | AV *mainstack; |
244 | AV *mainstack; |
123 | SV **stack_sp; |
245 | perl_slots *slot; /* basically the saved sp */ |
124 | OP *op; |
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125 | SV **curpad; |
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126 | AV *comppad; |
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127 | CV *compcv; |
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128 | SV **stack_base; |
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129 | SV **stack_max; |
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130 | SV **tmps_stack; |
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131 | I32 tmps_floor; |
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132 | I32 tmps_ix; |
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133 | I32 tmps_max; |
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134 | I32 *markstack; |
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135 | I32 *markstack_ptr; |
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136 | I32 *markstack_max; |
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137 | I32 *scopestack; |
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138 | I32 scopestack_ix; |
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139 | I32 scopestack_max; |
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140 | ANY *savestack; |
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141 | I32 savestack_ix; |
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142 | I32 savestack_max; |
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143 | OP **retstack; |
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144 | I32 retstack_ix; |
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145 | I32 retstack_max; |
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146 | PMOP *curpm; |
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147 | COP *curcop; |
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148 | JMPENV *top_env; |
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149 | |
246 | |
150 | /* data associated with this coroutine (initial args) */ |
247 | AV *args; /* data associated with this coroutine (initial args) */ |
151 | AV *args; |
248 | int refcnt; /* coroutines are refcounted, yes */ |
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249 | int flags; /* CF_ flags */ |
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250 | HV *hv; /* the perl hash associated with this coro, if any */ |
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251 | |
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252 | /* statistics */ |
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253 | int usecount; /* number of transfers to this coro */ |
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254 | |
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255 | /* coro process data */ |
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256 | int prio; |
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257 | SV *throw; /* exception to be thrown */ |
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258 | |
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259 | /* async_pool */ |
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260 | SV *saved_deffh; |
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261 | |
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262 | /* linked list */ |
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263 | struct coro *next, *prev; |
152 | }; |
264 | }; |
153 | |
265 | |
154 | typedef struct coro *Coro__State; |
266 | typedef struct coro *Coro__State; |
155 | typedef struct coro *Coro__State_or_hashref; |
267 | typedef struct coro *Coro__State_or_hashref; |
156 | |
268 | |
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269 | /** Coro ********************************************************************/ |
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270 | |
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271 | #define PRIO_MAX 3 |
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272 | #define PRIO_HIGH 1 |
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273 | #define PRIO_NORMAL 0 |
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274 | #define PRIO_LOW -1 |
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275 | #define PRIO_IDLE -3 |
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276 | #define PRIO_MIN -4 |
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277 | |
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278 | /* for Coro.pm */ |
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279 | static SV *coro_current; |
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280 | static SV *coro_readyhook; |
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281 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
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282 | static int coro_nready; |
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283 | static struct coro *coro_first; |
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284 | |
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285 | /** lowlevel stuff **********************************************************/ |
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286 | |
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287 | static SV * |
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288 | coro_get_sv (pTHX_ const char *name, int create) |
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289 | { |
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290 | #if PERL_VERSION_ATLEAST (5,10,0) |
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291 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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292 | get_sv (name, create); |
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293 | #endif |
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294 | return get_sv (name, create); |
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295 | } |
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296 | |
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297 | static AV * |
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298 | coro_get_av (pTHX_ const char *name, int create) |
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299 | { |
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300 | #if PERL_VERSION_ATLEAST (5,10,0) |
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301 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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302 | get_av (name, create); |
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303 | #endif |
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304 | return get_av (name, create); |
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305 | } |
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306 | |
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307 | static HV * |
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308 | coro_get_hv (pTHX_ const char *name, int create) |
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309 | { |
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310 | #if PERL_VERSION_ATLEAST (5,10,0) |
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311 | /* silence stupid and wrong 5.10 warning that I am unable to switch off */ |
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312 | get_hv (name, create); |
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313 | #endif |
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314 | return get_hv (name, create); |
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315 | } |
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316 | |
157 | static AV * |
317 | static AV * |
158 | coro_clone_padlist (pTHX_ CV *cv) |
318 | coro_clone_padlist (pTHX_ CV *cv) |
159 | { |
319 | { |
160 | AV *padlist = CvPADLIST (cv); |
320 | AV *padlist = CvPADLIST (cv); |
161 | AV *newpadlist, *newpad; |
321 | AV *newpadlist, *newpad; |
162 | |
322 | |
163 | newpadlist = newAV (); |
323 | newpadlist = newAV (); |
164 | AvREAL_off (newpadlist); |
324 | AvREAL_off (newpadlist); |
165 | #if PERL_VERSION < 9 |
325 | #if PERL_VERSION_ATLEAST (5,10,0) |
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326 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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327 | #else |
166 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
328 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
167 | #else |
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168 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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169 | #endif |
329 | #endif |
170 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
330 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
171 | --AvFILLp (padlist); |
331 | --AvFILLp (padlist); |
172 | |
332 | |
173 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
333 | av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE))); |
174 | av_store (newpadlist, 1, (SV *)newpad); |
334 | av_store (newpadlist, 1, (SV *)newpad); |
175 | |
335 | |
176 | return newpadlist; |
336 | return newpadlist; |
177 | } |
337 | } |
178 | |
338 | |
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208 | |
368 | |
209 | /* casting is fun. */ |
369 | /* casting is fun. */ |
210 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
370 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
211 | free_padlist (aTHX_ padlist); |
371 | free_padlist (aTHX_ padlist); |
212 | |
372 | |
213 | SvREFCNT_dec (av); |
373 | SvREFCNT_dec (av); /* sv_magicext increased the refcount */ |
214 | |
374 | |
215 | return 0; |
375 | return 0; |
216 | } |
376 | } |
217 | |
377 | |
218 | #define PERL_MAGIC_coro PERL_MAGIC_ext |
378 | #define CORO_MAGIC_type_cv PERL_MAGIC_ext |
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379 | #define CORO_MAGIC_type_state PERL_MAGIC_ext |
219 | |
380 | |
220 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
381 | static MGVTBL coro_cv_vtbl = { |
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382 | 0, 0, 0, 0, |
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383 | coro_cv_free |
|
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384 | }; |
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385 | |
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386 | #define CORO_MAGIC(sv,type) \ |
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387 | SvMAGIC (sv) \ |
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388 | ? SvMAGIC (sv)->mg_type == type \ |
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389 | ? SvMAGIC (sv) \ |
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390 | : mg_find (sv, type) \ |
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391 | : 0 |
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392 | |
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393 | #define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv) |
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394 | #define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state) |
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395 | |
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396 | static struct coro * |
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397 | SvSTATE_ (pTHX_ SV *coro) |
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398 | { |
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399 | HV *stash; |
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400 | MAGIC *mg; |
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401 | |
|
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402 | if (SvROK (coro)) |
|
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403 | coro = SvRV (coro); |
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404 | |
|
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405 | if (expect_false (SvTYPE (coro) != SVt_PVHV)) |
|
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406 | croak ("Coro::State object required"); |
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407 | |
|
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408 | stash = SvSTASH (coro); |
|
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409 | if (expect_false (stash != coro_stash && stash != coro_state_stash)) |
|
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410 | { |
|
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411 | /* very slow, but rare, check */ |
|
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412 | if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State")) |
|
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413 | croak ("Coro::State object required"); |
|
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414 | } |
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415 | |
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416 | mg = CORO_MAGIC_state (coro); |
|
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417 | return (struct coro *)mg->mg_ptr; |
|
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418 | } |
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419 | |
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420 | #define SvSTATE(sv) SvSTATE_ (aTHX_ (sv)) |
221 | |
421 | |
222 | /* the next two functions merely cache the padlists */ |
422 | /* the next two functions merely cache the padlists */ |
223 | static void |
423 | static void |
224 | get_padlist (pTHX_ CV *cv) |
424 | get_padlist (pTHX_ CV *cv) |
225 | { |
425 | { |
226 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
426 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
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427 | AV *av; |
227 | |
428 | |
228 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
429 | if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)) |
229 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
430 | CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--]; |
230 | else |
431 | else |
231 | { |
432 | { |
232 | #if 0 |
433 | #if CORO_PREFER_PERL_FUNCTIONS |
233 | /* this should work - but it doesn't :( */ |
434 | /* this is probably cleaner? but also slower! */ |
|
|
435 | /* in practise, it seems to be less stable */ |
234 | CV *cp = Perl_cv_clone (aTHX_ cv); |
436 | CV *cp = Perl_cv_clone (cv); |
235 | CvPADLIST (cv) = CvPADLIST (cp); |
437 | CvPADLIST (cv) = CvPADLIST (cp); |
236 | CvPADLIST (cp) = 0; |
438 | CvPADLIST (cp) = 0; |
237 | SvREFCNT_dec (cp); |
439 | SvREFCNT_dec (cp); |
238 | #else |
440 | #else |
239 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
441 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
… | |
… | |
242 | } |
444 | } |
243 | |
445 | |
244 | static void |
446 | static void |
245 | put_padlist (pTHX_ CV *cv) |
447 | put_padlist (pTHX_ CV *cv) |
246 | { |
448 | { |
247 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
449 | MAGIC *mg = CORO_MAGIC_cv (cv); |
|
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450 | AV *av; |
248 | |
451 | |
249 | if (!mg) |
452 | if (expect_false (!mg)) |
250 | { |
453 | mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0); |
251 | sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0); |
|
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252 | mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
|
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253 | mg->mg_virtual = &vtbl_coro; |
|
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254 | mg->mg_obj = (SV *)newAV (); |
|
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255 | } |
|
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256 | |
454 | |
257 | av_push ((AV *)mg->mg_obj, (SV *)CvPADLIST (cv)); |
455 | av = (AV *)mg->mg_obj; |
258 | } |
|
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259 | |
456 | |
260 | #define SB do { |
457 | if (expect_false (AvFILLp (av) >= AvMAX (av))) |
261 | #define SE } while (0) |
458 | av_extend (av, AvMAX (av) + 1); |
262 | |
459 | |
263 | #define LOAD(state) load_state(aTHX_ (state)); |
460 | AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv); |
264 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
461 | } |
265 | |
462 | |
266 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
463 | /** load & save, init *******************************************************/ |
267 | |
464 | |
268 | static void |
465 | static void |
269 | load_state(pTHX_ Coro__State c) |
466 | load_perl (pTHX_ Coro__State c) |
270 | { |
467 | { |
271 | PL_dowarn = c->dowarn; |
468 | perl_slots *slot = c->slot; |
272 | PL_in_eval = c->in_eval; |
469 | c->slot = 0; |
273 | |
470 | |
274 | PL_curstackinfo = c->curstackinfo; |
|
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275 | PL_curstack = c->curstack; |
|
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276 | PL_mainstack = c->mainstack; |
471 | PL_mainstack = c->mainstack; |
277 | PL_stack_sp = c->stack_sp; |
|
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278 | PL_op = c->op; |
|
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279 | PL_curpad = c->curpad; |
|
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280 | PL_comppad = c->comppad; |
|
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281 | PL_compcv = c->compcv; |
|
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282 | PL_stack_base = c->stack_base; |
|
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283 | PL_stack_max = c->stack_max; |
|
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284 | PL_tmps_stack = c->tmps_stack; |
|
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285 | PL_tmps_floor = c->tmps_floor; |
|
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286 | PL_tmps_ix = c->tmps_ix; |
|
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287 | PL_tmps_max = c->tmps_max; |
|
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288 | PL_markstack = c->markstack; |
|
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289 | PL_markstack_ptr = c->markstack_ptr; |
|
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290 | PL_markstack_max = c->markstack_max; |
|
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291 | PL_scopestack = c->scopestack; |
|
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292 | PL_scopestack_ix = c->scopestack_ix; |
|
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293 | PL_scopestack_max = c->scopestack_max; |
|
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294 | PL_savestack = c->savestack; |
|
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295 | PL_savestack_ix = c->savestack_ix; |
|
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296 | PL_savestack_max = c->savestack_max; |
|
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297 | #if PERL_VERSION < 9 |
|
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298 | PL_retstack = c->retstack; |
|
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299 | PL_retstack_ix = c->retstack_ix; |
|
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300 | PL_retstack_max = c->retstack_max; |
|
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301 | #endif |
|
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302 | PL_curpm = c->curpm; |
|
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303 | PL_curcop = c->curcop; |
|
|
304 | PL_top_env = c->top_env; |
|
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305 | |
472 | |
306 | if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav); |
473 | GvSV (PL_defgv) = slot->defsv; |
307 | if (c->defsv) REPLACE_SV (DEFSV , c->defsv); |
474 | GvAV (PL_defgv) = slot->defav; |
308 | if (c->errsv) REPLACE_SV (ERRSV , c->errsv); |
475 | GvSV (PL_errgv) = slot->errsv; |
|
|
476 | GvSV (irsgv) = slot->irsgv; |
|
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477 | |
|
|
478 | #define VAR(name,type) PL_ ## name = slot->name; |
|
|
479 | # include "state.h" |
|
|
480 | #undef VAR |
309 | |
481 | |
310 | { |
482 | { |
311 | dSP; |
483 | dSP; |
|
|
484 | |
312 | CV *cv; |
485 | CV *cv; |
313 | |
486 | |
314 | /* now do the ugly restore mess */ |
487 | /* now do the ugly restore mess */ |
315 | while ((cv = (CV *)POPs)) |
488 | while (expect_true (cv = (CV *)POPs)) |
316 | { |
489 | { |
317 | AV *padlist = (AV *)POPs; |
|
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318 | |
|
|
319 | if (padlist) |
|
|
320 | { |
|
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321 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
490 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
322 | CvPADLIST(cv) = padlist; |
491 | CvDEPTH (cv) = PTR2IV (POPs); |
323 | } |
492 | CvPADLIST (cv) = (AV *)POPs; |
324 | |
|
|
325 | ++CvDEPTH(cv); |
|
|
326 | } |
493 | } |
327 | |
494 | |
328 | PUTBACK; |
495 | PUTBACK; |
329 | } |
496 | } |
330 | } |
497 | } |
331 | |
498 | |
332 | static void |
499 | static void |
333 | save_state(pTHX_ Coro__State c, int flags) |
500 | save_perl (pTHX_ Coro__State c) |
334 | { |
501 | { |
335 | { |
502 | { |
336 | dSP; |
503 | dSP; |
337 | I32 cxix = cxstack_ix; |
504 | I32 cxix = cxstack_ix; |
338 | PERL_CONTEXT *ccstk = cxstack; |
505 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
341 | /* |
508 | /* |
342 | * the worst thing you can imagine happens first - we have to save |
509 | * the worst thing you can imagine happens first - we have to save |
343 | * (and reinitialize) all cv's in the whole callchain :( |
510 | * (and reinitialize) all cv's in the whole callchain :( |
344 | */ |
511 | */ |
345 | |
512 | |
346 | PUSHs (Nullsv); |
513 | XPUSHs (Nullsv); |
347 | /* this loop was inspired by pp_caller */ |
514 | /* this loop was inspired by pp_caller */ |
348 | for (;;) |
515 | for (;;) |
349 | { |
516 | { |
350 | while (cxix >= 0) |
517 | while (expect_true (cxix >= 0)) |
351 | { |
518 | { |
352 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
519 | PERL_CONTEXT *cx = &ccstk[cxix--]; |
353 | |
520 | |
354 | if (CxTYPE(cx) == CXt_SUB) |
521 | if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)) |
355 | { |
522 | { |
356 | CV *cv = cx->blk_sub.cv; |
523 | CV *cv = cx->blk_sub.cv; |
|
|
524 | |
357 | if (CvDEPTH(cv)) |
525 | if (expect_true (CvDEPTH (cv))) |
358 | { |
526 | { |
359 | EXTEND (SP, CvDEPTH(cv)*2); |
527 | EXTEND (SP, 3); |
360 | |
|
|
361 | while (--CvDEPTH(cv)) |
|
|
362 | { |
|
|
363 | /* this tells the restore code to increment CvDEPTH */ |
|
|
364 | PUSHs (Nullsv); |
|
|
365 | PUSHs ((SV *)cv); |
|
|
366 | } |
|
|
367 | |
|
|
368 | PUSHs ((SV *)CvPADLIST(cv)); |
528 | PUSHs ((SV *)CvPADLIST (cv)); |
|
|
529 | PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv))); |
369 | PUSHs ((SV *)cv); |
530 | PUSHs ((SV *)cv); |
370 | |
531 | |
|
|
532 | CvDEPTH (cv) = 0; |
371 | get_padlist (aTHX_ cv); |
533 | get_padlist (aTHX_ cv); |
372 | } |
534 | } |
373 | } |
535 | } |
374 | #ifdef CXt_FORMAT |
|
|
375 | else if (CxTYPE(cx) == CXt_FORMAT) |
|
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376 | { |
|
|
377 | /* I never used formats, so how should I know how these are implemented? */ |
|
|
378 | /* my bold guess is as a simple, plain sub... */ |
|
|
379 | croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats"); |
|
|
380 | } |
|
|
381 | #endif |
|
|
382 | } |
536 | } |
383 | |
537 | |
384 | if (top_si->si_type == PERLSI_MAIN) |
538 | if (expect_true (top_si->si_type == PERLSI_MAIN)) |
385 | break; |
539 | break; |
386 | |
540 | |
387 | top_si = top_si->si_prev; |
541 | top_si = top_si->si_prev; |
388 | ccstk = top_si->si_cxstack; |
542 | ccstk = top_si->si_cxstack; |
389 | cxix = top_si->si_cxix; |
543 | cxix = top_si->si_cxix; |
390 | } |
544 | } |
391 | |
545 | |
392 | PUTBACK; |
546 | PUTBACK; |
393 | } |
547 | } |
394 | |
548 | |
395 | c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0; |
549 | /* allocate some space on the context stack for our purposes */ |
396 | c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0; |
550 | /* we manually unroll here, as usually 2 slots is enough */ |
397 | c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0; |
551 | if (SLOT_COUNT >= 1) CXINC; |
|
|
552 | if (SLOT_COUNT >= 2) CXINC; |
|
|
553 | if (SLOT_COUNT >= 3) CXINC; |
|
|
554 | { |
|
|
555 | int i; |
|
|
556 | for (i = 3; i < SLOT_COUNT; ++i) |
|
|
557 | CXINC; |
|
|
558 | } |
|
|
559 | cxstack_ix -= SLOT_COUNT; /* undo allocation */ |
398 | |
560 | |
399 | c->dowarn = PL_dowarn; |
|
|
400 | c->in_eval = PL_in_eval; |
|
|
401 | |
|
|
402 | c->curstackinfo = PL_curstackinfo; |
|
|
403 | c->curstack = PL_curstack; |
|
|
404 | c->mainstack = PL_mainstack; |
561 | c->mainstack = PL_mainstack; |
405 | c->stack_sp = PL_stack_sp; |
562 | |
406 | c->op = PL_op; |
563 | { |
407 | c->curpad = PL_curpad; |
564 | perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1); |
408 | c->comppad = PL_comppad; |
565 | |
409 | c->compcv = PL_compcv; |
566 | slot->defav = GvAV (PL_defgv); |
410 | c->stack_base = PL_stack_base; |
567 | slot->defsv = DEFSV; |
411 | c->stack_max = PL_stack_max; |
568 | slot->errsv = ERRSV; |
412 | c->tmps_stack = PL_tmps_stack; |
569 | slot->irsgv = GvSV (irsgv); |
413 | c->tmps_floor = PL_tmps_floor; |
570 | |
414 | c->tmps_ix = PL_tmps_ix; |
571 | #define VAR(name,type) slot->name = PL_ ## name; |
415 | c->tmps_max = PL_tmps_max; |
572 | # include "state.h" |
416 | c->markstack = PL_markstack; |
573 | #undef VAR |
417 | c->markstack_ptr = PL_markstack_ptr; |
574 | } |
418 | c->markstack_max = PL_markstack_max; |
|
|
419 | c->scopestack = PL_scopestack; |
|
|
420 | c->scopestack_ix = PL_scopestack_ix; |
|
|
421 | c->scopestack_max = PL_scopestack_max; |
|
|
422 | c->savestack = PL_savestack; |
|
|
423 | c->savestack_ix = PL_savestack_ix; |
|
|
424 | c->savestack_max = PL_savestack_max; |
|
|
425 | #if PERL_VERSION < 9 |
|
|
426 | c->retstack = PL_retstack; |
|
|
427 | c->retstack_ix = PL_retstack_ix; |
|
|
428 | c->retstack_max = PL_retstack_max; |
|
|
429 | #endif |
|
|
430 | c->curpm = PL_curpm; |
|
|
431 | c->curcop = PL_curcop; |
|
|
432 | c->top_env = PL_top_env; |
|
|
433 | } |
575 | } |
434 | |
576 | |
435 | /* |
577 | /* |
436 | * allocate various perl stacks. This is an exact copy |
578 | * allocate various perl stacks. This is an exact copy |
437 | * of perl.c:init_stacks, except that it uses less memory |
579 | * of perl.c:init_stacks, except that it uses less memory |
438 | * on the (sometimes correct) assumption that coroutines do |
580 | * on the (sometimes correct) assumption that coroutines do |
439 | * not usually need a lot of stackspace. |
581 | * not usually need a lot of stackspace. |
440 | */ |
582 | */ |
|
|
583 | #if CORO_PREFER_PERL_FUNCTIONS |
|
|
584 | # define coro_init_stacks init_stacks |
|
|
585 | #else |
441 | static void |
586 | static void |
442 | coro_init_stacks (pTHX) |
587 | coro_init_stacks (pTHX) |
443 | { |
588 | { |
444 | LOCK; |
589 | PL_curstackinfo = new_stackinfo(32, 8); |
445 | |
|
|
446 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
|
|
447 | PL_curstackinfo->si_type = PERLSI_MAIN; |
590 | PL_curstackinfo->si_type = PERLSI_MAIN; |
448 | PL_curstack = PL_curstackinfo->si_stack; |
591 | PL_curstack = PL_curstackinfo->si_stack; |
449 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
592 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
450 | |
593 | |
451 | PL_stack_base = AvARRAY(PL_curstack); |
594 | PL_stack_base = AvARRAY(PL_curstack); |
452 | PL_stack_sp = PL_stack_base; |
595 | PL_stack_sp = PL_stack_base; |
453 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
596 | PL_stack_max = PL_stack_base + AvMAX(PL_curstack); |
454 | |
597 | |
455 | New(50,PL_tmps_stack,96,SV*); |
598 | New(50,PL_tmps_stack,32,SV*); |
456 | PL_tmps_floor = -1; |
599 | PL_tmps_floor = -1; |
457 | PL_tmps_ix = -1; |
600 | PL_tmps_ix = -1; |
458 | PL_tmps_max = 96; |
601 | PL_tmps_max = 32; |
459 | |
602 | |
460 | New(54,PL_markstack,16,I32); |
603 | New(54,PL_markstack,16,I32); |
461 | PL_markstack_ptr = PL_markstack; |
604 | PL_markstack_ptr = PL_markstack; |
462 | PL_markstack_max = PL_markstack + 16; |
605 | PL_markstack_max = PL_markstack + 16; |
463 | |
606 | |
464 | #ifdef SET_MARK_OFFSET |
607 | #ifdef SET_MARK_OFFSET |
465 | SET_MARK_OFFSET; |
608 | SET_MARK_OFFSET; |
466 | #endif |
609 | #endif |
467 | |
610 | |
468 | New(54,PL_scopestack,16,I32); |
611 | New(54,PL_scopestack,8,I32); |
469 | PL_scopestack_ix = 0; |
612 | PL_scopestack_ix = 0; |
470 | PL_scopestack_max = 16; |
613 | PL_scopestack_max = 8; |
471 | |
614 | |
472 | New(54,PL_savestack,96,ANY); |
615 | New(54,PL_savestack,24,ANY); |
473 | PL_savestack_ix = 0; |
616 | PL_savestack_ix = 0; |
474 | PL_savestack_max = 96; |
617 | PL_savestack_max = 24; |
475 | |
618 | |
476 | #if PERL_VERSION < 9 |
619 | #if !PERL_VERSION_ATLEAST (5,10,0) |
477 | New(54,PL_retstack,8,OP*); |
620 | New(54,PL_retstack,4,OP*); |
478 | PL_retstack_ix = 0; |
621 | PL_retstack_ix = 0; |
479 | PL_retstack_max = 8; |
622 | PL_retstack_max = 4; |
480 | #endif |
623 | #endif |
481 | |
|
|
482 | UNLOCK; |
|
|
483 | } |
624 | } |
|
|
625 | #endif |
484 | |
626 | |
485 | /* |
627 | /* |
486 | * destroy the stacks, the callchain etc... |
628 | * destroy the stacks, the callchain etc... |
487 | */ |
629 | */ |
488 | static void |
630 | static void |
489 | destroy_stacks(pTHX) |
631 | coro_destroy_stacks (pTHX) |
490 | { |
632 | { |
491 | if (!IN_DESTRUCT) |
|
|
492 | { |
|
|
493 | /* is this ugly, I ask? */ |
|
|
494 | LEAVE_SCOPE (0); |
|
|
495 | |
|
|
496 | /* sure it is, but more important: is it correct?? :/ */ |
|
|
497 | FREETMPS; |
|
|
498 | |
|
|
499 | /*POPSTACK_TO (PL_mainstack);*//*D*//*use*/ |
|
|
500 | } |
|
|
501 | |
|
|
502 | while (PL_curstackinfo->si_next) |
633 | while (PL_curstackinfo->si_next) |
503 | PL_curstackinfo = PL_curstackinfo->si_next; |
634 | PL_curstackinfo = PL_curstackinfo->si_next; |
504 | |
635 | |
505 | while (PL_curstackinfo) |
636 | while (PL_curstackinfo) |
506 | { |
637 | { |
507 | PERL_SI *p = PL_curstackinfo->si_prev; |
638 | PERL_SI *p = PL_curstackinfo->si_prev; |
508 | |
639 | |
509 | { /*D*//*remove*/ |
|
|
510 | dSP; |
|
|
511 | SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack); |
|
|
512 | PUTBACK; /* possibly superfluous */ |
|
|
513 | } |
|
|
514 | |
|
|
515 | if (!IN_DESTRUCT) |
640 | if (!IN_DESTRUCT) |
516 | { |
|
|
517 | dounwind (-1);/*D*//*remove*/ |
|
|
518 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
641 | SvREFCNT_dec (PL_curstackinfo->si_stack); |
519 | } |
|
|
520 | |
642 | |
521 | Safefree (PL_curstackinfo->si_cxstack); |
643 | Safefree (PL_curstackinfo->si_cxstack); |
522 | Safefree (PL_curstackinfo); |
644 | Safefree (PL_curstackinfo); |
523 | PL_curstackinfo = p; |
645 | PL_curstackinfo = p; |
524 | } |
646 | } |
525 | |
647 | |
526 | Safefree (PL_tmps_stack); |
648 | Safefree (PL_tmps_stack); |
527 | Safefree (PL_markstack); |
649 | Safefree (PL_markstack); |
528 | Safefree (PL_scopestack); |
650 | Safefree (PL_scopestack); |
529 | Safefree (PL_savestack); |
651 | Safefree (PL_savestack); |
530 | #if PERL_VERSION < 9 |
652 | #if !PERL_VERSION_ATLEAST (5,10,0) |
531 | Safefree (PL_retstack); |
653 | Safefree (PL_retstack); |
532 | #endif |
654 | #endif |
533 | } |
655 | } |
534 | |
656 | |
535 | static void |
657 | static size_t |
536 | allocate_stack (Coro__State ctx, int alloc) |
658 | coro_rss (pTHX_ struct coro *coro) |
537 | { |
659 | { |
538 | coro_stack *stack; |
660 | size_t rss = sizeof (*coro); |
539 | |
661 | |
540 | New (0, stack, 1, coro_stack); |
662 | if (coro->mainstack) |
541 | |
|
|
542 | stack->refcnt = 1; |
|
|
543 | stack->usecnt = 1; |
|
|
544 | stack->gencnt = ctx->gencnt = 0; |
|
|
545 | |
|
|
546 | if (alloc) |
|
|
547 | { |
663 | { |
548 | #if HAVE_MMAP |
664 | perl_slots tmp_slot; |
549 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
665 | perl_slots *slot; |
550 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
666 | |
551 | if (stack->sptr != (void *)-1) |
667 | if (coro->flags & CF_RUNNING) |
552 | { |
668 | { |
553 | # if STACKGUARD |
669 | slot = &tmp_slot; |
554 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
670 | |
555 | # endif |
671 | #define VAR(name,type) slot->name = PL_ ## name; |
|
|
672 | # include "state.h" |
|
|
673 | #undef VAR |
556 | } |
674 | } |
557 | else |
675 | else |
558 | #endif |
676 | slot = coro->slot; |
|
|
677 | |
|
|
678 | if (slot) |
559 | { |
679 | { |
560 | stack->ssize = - (STACKSIZE * (long)sizeof (long)); |
680 | rss += sizeof (slot->curstackinfo); |
561 | New (0, stack->sptr, STACKSIZE, long); |
681 | rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT); |
|
|
682 | rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *); |
|
|
683 | rss += slot->tmps_max * sizeof (SV *); |
|
|
684 | rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32); |
|
|
685 | rss += slot->scopestack_max * sizeof (I32); |
|
|
686 | rss += slot->savestack_max * sizeof (ANY); |
|
|
687 | |
|
|
688 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
689 | rss += slot->retstack_max * sizeof (OP *); |
|
|
690 | #endif |
562 | } |
691 | } |
563 | } |
692 | } |
564 | else |
|
|
565 | stack->sptr = 0; |
|
|
566 | |
693 | |
567 | ctx->stack = stack; |
694 | return rss; |
|
|
695 | } |
|
|
696 | |
|
|
697 | /** coroutine stack handling ************************************************/ |
|
|
698 | |
|
|
699 | static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg); |
|
|
700 | static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg); |
|
|
701 | static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg); |
|
|
702 | |
|
|
703 | /* apparently < 5.8.8 */ |
|
|
704 | #ifndef MgPV_nolen_const |
|
|
705 | #define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \ |
|
|
706 | SvPV_nolen((SV*)((mg)->mg_ptr)) : \ |
|
|
707 | (const char*)(mg)->mg_ptr) |
|
|
708 | #endif |
|
|
709 | |
|
|
710 | /* |
|
|
711 | * This overrides the default magic get method of %SIG elements. |
|
|
712 | * The original one doesn't provide for reading back of PL_diehook/PL_warnhook |
|
|
713 | * and instead of tryign to save and restore the hash elements, we just provide |
|
|
714 | * readback here. |
|
|
715 | * We only do this when the hook is != 0, as they are often set to 0 temporarily, |
|
|
716 | * not expecting this to actually change the hook. This is a potential problem |
|
|
717 | * when a schedule happens then, but we ignore this. |
|
|
718 | */ |
|
|
719 | static int |
|
|
720 | coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg) |
|
|
721 | { |
|
|
722 | const char *s = MgPV_nolen_const (mg); |
|
|
723 | |
|
|
724 | if (*s == '_') |
|
|
725 | { |
|
|
726 | SV **svp = 0; |
|
|
727 | |
|
|
728 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
729 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
730 | |
|
|
731 | if (svp) |
|
|
732 | { |
|
|
733 | sv_setsv (sv, *svp ? *svp : &PL_sv_undef); |
|
|
734 | return 0; |
|
|
735 | } |
|
|
736 | } |
|
|
737 | |
|
|
738 | return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0; |
|
|
739 | } |
|
|
740 | |
|
|
741 | static int |
|
|
742 | coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg) |
|
|
743 | { |
|
|
744 | const char *s = MgPV_nolen_const (mg); |
|
|
745 | |
|
|
746 | if (*s == '_') |
|
|
747 | { |
|
|
748 | SV **svp = 0; |
|
|
749 | |
|
|
750 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
751 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
752 | |
|
|
753 | if (svp) |
|
|
754 | { |
|
|
755 | SV *old = *svp; |
|
|
756 | *svp = 0; |
|
|
757 | SvREFCNT_dec (old); |
|
|
758 | return 0; |
|
|
759 | } |
|
|
760 | } |
|
|
761 | |
|
|
762 | return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0; |
|
|
763 | } |
|
|
764 | |
|
|
765 | static int |
|
|
766 | coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg) |
|
|
767 | { |
|
|
768 | const char *s = MgPV_nolen_const (mg); |
|
|
769 | |
|
|
770 | if (*s == '_') |
|
|
771 | { |
|
|
772 | SV **svp = 0; |
|
|
773 | |
|
|
774 | if (strEQ (s, "__DIE__" )) svp = &PL_diehook; |
|
|
775 | if (strEQ (s, "__WARN__")) svp = &PL_warnhook; |
|
|
776 | |
|
|
777 | if (svp) |
|
|
778 | { |
|
|
779 | SV *old = *svp; |
|
|
780 | *svp = newSVsv (sv); |
|
|
781 | SvREFCNT_dec (old); |
|
|
782 | return 0; |
|
|
783 | } |
|
|
784 | } |
|
|
785 | |
|
|
786 | return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0; |
568 | } |
787 | } |
569 | |
788 | |
570 | static void |
789 | static void |
571 | deallocate_stack (Coro__State ctx) |
790 | coro_setup (pTHX_ struct coro *coro) |
572 | { |
|
|
573 | coro_stack *stack = ctx->stack; |
|
|
574 | |
|
|
575 | ctx->stack = 0; |
|
|
576 | |
|
|
577 | if (stack) |
|
|
578 | { |
|
|
579 | if (!--stack->refcnt) |
|
|
580 | { |
|
|
581 | #ifdef HAVE_MMAP |
|
|
582 | if (stack->ssize > 0 && stack->sptr) |
|
|
583 | munmap (stack->sptr, stack->ssize); |
|
|
584 | else |
|
|
585 | #endif |
|
|
586 | Safefree (stack->sptr); |
|
|
587 | |
|
|
588 | Safefree (stack); |
|
|
589 | } |
|
|
590 | else if (ctx->gencnt == stack->gencnt) |
|
|
591 | --stack->usecnt; |
|
|
592 | } |
|
|
593 | } |
|
|
594 | |
|
|
595 | static void |
|
|
596 | setup_coro (void *arg) |
|
|
597 | { |
791 | { |
598 | /* |
792 | /* |
599 | * emulate part of the perl startup here. |
793 | * emulate part of the perl startup here. |
600 | */ |
794 | */ |
601 | dTHX; |
|
|
602 | dSP; |
|
|
603 | Coro__State ctx = (Coro__State)arg; |
|
|
604 | SV *sub_init = (SV *)get_cv (SUB_INIT, FALSE); |
|
|
605 | |
|
|
606 | coro_init_stacks (aTHX); |
795 | coro_init_stacks (aTHX); |
607 | /*PL_curcop = 0;*/ |
796 | |
608 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
797 | PL_runops = RUNOPS_DEFAULT; |
|
|
798 | PL_curcop = &PL_compiling; |
|
|
799 | PL_in_eval = EVAL_NULL; |
|
|
800 | PL_comppad = 0; |
|
|
801 | PL_curpm = 0; |
|
|
802 | PL_curpad = 0; |
|
|
803 | PL_localizing = 0; |
|
|
804 | PL_dirty = 0; |
|
|
805 | PL_restartop = 0; |
|
|
806 | #if PERL_VERSION_ATLEAST (5,10,0) |
|
|
807 | PL_parser = 0; |
|
|
808 | #endif |
|
|
809 | |
|
|
810 | /* recreate the die/warn hooks */ |
|
|
811 | PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook ); |
|
|
812 | PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook); |
|
|
813 | |
|
|
814 | GvSV (PL_defgv) = newSV (0); |
|
|
815 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
|
|
816 | GvSV (PL_errgv) = newSV (0); |
|
|
817 | GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0); |
|
|
818 | PL_rs = newSVsv (GvSV (irsgv)); |
|
|
819 | PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv); |
|
|
820 | |
|
|
821 | { |
|
|
822 | dSP; |
|
|
823 | LOGOP myop; |
|
|
824 | |
|
|
825 | Zero (&myop, 1, LOGOP); |
|
|
826 | myop.op_next = Nullop; |
|
|
827 | myop.op_flags = OPf_WANT_VOID; |
|
|
828 | |
|
|
829 | PUSHMARK (SP); |
|
|
830 | XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv)))); |
|
|
831 | PUTBACK; |
|
|
832 | PL_op = (OP *)&myop; |
|
|
833 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
834 | SPAGAIN; |
|
|
835 | } |
|
|
836 | |
|
|
837 | /* this newly created coroutine might be run on an existing cctx which most |
|
|
838 | * likely was suspended in set_stacklevel, called from entersub. |
|
|
839 | * set_stacklevl doesn't do anything on return, but entersub does LEAVE, |
|
|
840 | * so we ENTER here for symmetry |
|
|
841 | */ |
|
|
842 | ENTER; |
|
|
843 | } |
|
|
844 | |
|
|
845 | static void |
|
|
846 | coro_destroy (pTHX_ struct coro *coro) |
|
|
847 | { |
|
|
848 | if (!IN_DESTRUCT) |
|
|
849 | { |
|
|
850 | /* restore all saved variables and stuff */ |
|
|
851 | LEAVE_SCOPE (0); |
|
|
852 | assert (PL_tmps_floor == -1); |
|
|
853 | |
|
|
854 | /* free all temporaries */ |
|
|
855 | FREETMPS; |
|
|
856 | assert (PL_tmps_ix == -1); |
|
|
857 | |
|
|
858 | /* unwind all extra stacks */ |
|
|
859 | POPSTACK_TO (PL_mainstack); |
|
|
860 | |
|
|
861 | /* unwind main stack */ |
|
|
862 | dounwind (-1); |
|
|
863 | } |
|
|
864 | |
|
|
865 | SvREFCNT_dec (GvSV (PL_defgv)); |
609 | SvREFCNT_dec (GvAV (PL_defgv)); |
866 | SvREFCNT_dec (GvAV (PL_defgv)); |
610 | GvAV (PL_defgv) = ctx->args; ctx->args = 0; |
867 | SvREFCNT_dec (GvSV (PL_errgv)); |
|
|
868 | SvREFCNT_dec (PL_defoutgv); |
|
|
869 | SvREFCNT_dec (PL_rs); |
|
|
870 | SvREFCNT_dec (GvSV (irsgv)); |
611 | |
871 | |
612 | SPAGAIN; |
872 | SvREFCNT_dec (PL_diehook); |
|
|
873 | SvREFCNT_dec (PL_warnhook); |
|
|
874 | |
|
|
875 | SvREFCNT_dec (coro->saved_deffh); |
|
|
876 | SvREFCNT_dec (coro->throw); |
613 | |
877 | |
614 | if (ctx->stack) |
878 | coro_destroy_stacks (aTHX); |
615 | { |
|
|
616 | ctx->cursp = 0; |
|
|
617 | |
|
|
618 | PUSHMARK(SP); |
|
|
619 | PUTBACK; |
|
|
620 | (void) call_sv (sub_init, G_VOID|G_NOARGS|G_EVAL); |
|
|
621 | |
|
|
622 | if (SvTRUE (ERRSV)) |
|
|
623 | croak (NULL); |
|
|
624 | else |
|
|
625 | croak ("FATAL: CCTXT coroutine returned!"); |
|
|
626 | } |
|
|
627 | else |
|
|
628 | { |
|
|
629 | UNOP myop; |
|
|
630 | |
|
|
631 | Zero(&myop, 1, UNOP); |
|
|
632 | myop.op_next = Nullop; |
|
|
633 | myop.op_flags = OPf_WANT_VOID; |
|
|
634 | |
|
|
635 | PL_op = (OP *)&myop; |
|
|
636 | |
|
|
637 | PUSHMARK(SP); |
|
|
638 | XPUSHs (sub_init); |
|
|
639 | /* |
|
|
640 | * the next line is slightly wrong, as PL_op->op_next |
|
|
641 | * is actually being executed so we skip the first op. |
|
|
642 | * that doesn't matter, though, since it is only |
|
|
643 | * pp_nextstate and we never return... |
|
|
644 | * ah yes, and I don't care anyways ;) |
|
|
645 | */ |
|
|
646 | PUTBACK; |
|
|
647 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
648 | SPAGAIN; |
|
|
649 | |
|
|
650 | ENTER; /* necessary e.g. for dounwind */ |
|
|
651 | } |
|
|
652 | } |
879 | } |
653 | |
880 | |
654 | static void |
881 | static void |
655 | continue_coro (void *arg) |
882 | free_coro_mortal (pTHX) |
656 | { |
883 | { |
657 | /* |
884 | if (expect_true (coro_mortal)) |
658 | * this is a _very_ stripped down perl interpreter ;) |
885 | { |
659 | */ |
886 | SvREFCNT_dec (coro_mortal); |
660 | dTHX; |
887 | coro_mortal = 0; |
661 | Coro__State ctx = (Coro__State)arg; |
|
|
662 | |
|
|
663 | PL_top_env = &PL_start_env; |
|
|
664 | |
|
|
665 | ctx->cursp = 0; |
|
|
666 | PL_op = PL_op->op_next; |
|
|
667 | CALLRUNOPS(aTHX); |
|
|
668 | |
|
|
669 | abort (); |
|
|
670 | } |
|
|
671 | |
|
|
672 | /* never call directly, always through the coro_state_transfer global variable */ |
|
|
673 | static void |
|
|
674 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
|
|
675 | { |
|
|
676 | dSTACKLEVEL; |
|
|
677 | |
|
|
678 | if (prev != next) |
|
|
679 | { |
888 | } |
680 | /* has this coro been created yet? */ |
889 | } |
681 | if (next->mainstack) |
890 | |
|
|
891 | static int |
|
|
892 | runops_trace (pTHX) |
|
|
893 | { |
|
|
894 | COP *oldcop = 0; |
|
|
895 | int oldcxix = -2; |
|
|
896 | struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */ |
|
|
897 | coro_cctx *cctx = coro->cctx; |
|
|
898 | |
|
|
899 | while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX))) |
|
|
900 | { |
|
|
901 | PERL_ASYNC_CHECK (); |
|
|
902 | |
|
|
903 | if (cctx->flags & CC_TRACE_ALL) |
682 | { |
904 | { |
683 | LOCK; |
905 | if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB) |
684 | SAVE (prev, flags); |
|
|
685 | LOAD (next); |
|
|
686 | UNLOCK; |
|
|
687 | |
|
|
688 | /* mark this state as in-use */ |
|
|
689 | next->mainstack = 0; |
|
|
690 | next->tmps_ix = -2; |
|
|
691 | |
|
|
692 | /* stacklevel changed? if yes, grab the stack for us! */ |
|
|
693 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
694 | { |
906 | { |
695 | if (!prev->stack) |
907 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
696 | allocate_stack (prev, 0); |
908 | SV **bot, **top; |
697 | else if (prev->cursp != stacklevel |
909 | AV *av = newAV (); /* return values */ |
698 | && prev->stack->usecnt > 1) |
910 | SV **cb; |
|
|
911 | dSP; |
|
|
912 | |
|
|
913 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
914 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
915 | if (isGV (gv)) |
|
|
916 | gv_efullname3 (fullname, gv, 0); |
|
|
917 | |
|
|
918 | bot = PL_stack_base + cx->blk_oldsp + 1; |
|
|
919 | top = cx->blk_gimme == G_ARRAY ? SP + 1 |
|
|
920 | : cx->blk_gimme == G_SCALAR ? bot + 1 |
|
|
921 | : bot; |
|
|
922 | |
|
|
923 | av_extend (av, top - bot); |
|
|
924 | while (bot < top) |
|
|
925 | av_push (av, SvREFCNT_inc_NN (*bot++)); |
|
|
926 | |
|
|
927 | PL_runops = RUNOPS_DEFAULT; |
|
|
928 | ENTER; |
|
|
929 | SAVETMPS; |
|
|
930 | EXTEND (SP, 3); |
|
|
931 | PUSHMARK (SP); |
|
|
932 | PUSHs (&PL_sv_no); |
|
|
933 | PUSHs (fullname); |
|
|
934 | PUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
935 | PUTBACK; |
|
|
936 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
937 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
938 | SPAGAIN; |
|
|
939 | FREETMPS; |
|
|
940 | LEAVE; |
|
|
941 | PL_runops = runops_trace; |
|
|
942 | } |
|
|
943 | |
|
|
944 | if (oldcop != PL_curcop) |
|
|
945 | { |
|
|
946 | oldcop = PL_curcop; |
|
|
947 | |
|
|
948 | if (PL_curcop != &PL_compiling) |
699 | { |
949 | { |
700 | prev->gencnt = ++prev->stack->gencnt; |
950 | SV **cb; |
701 | prev->stack->usecnt = 1; |
|
|
702 | } |
|
|
703 | |
951 | |
704 | /* has our stack been invalidated? */ |
952 | if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB) |
705 | if (next->stack && next->stack->gencnt != next->gencnt) |
|
|
706 | { |
953 | { |
707 | deallocate_stack (next); |
954 | PERL_CONTEXT *cx = &cxstack[cxstack_ix]; |
708 | allocate_stack (next, 1); |
955 | |
709 | coro_create (&(next->stack->cctx), |
956 | if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix) |
710 | continue_coro, (void *)next, |
957 | { |
711 | next->stack->sptr, labs (next->stack->ssize)); |
958 | runops_proc_t old_runops = PL_runops; |
|
|
959 | dSP; |
|
|
960 | GV *gv = CvGV (cx->blk_sub.cv); |
|
|
961 | SV *fullname = sv_2mortal (newSV (0)); |
|
|
962 | |
|
|
963 | if (isGV (gv)) |
|
|
964 | gv_efullname3 (fullname, gv, 0); |
|
|
965 | |
|
|
966 | PL_runops = RUNOPS_DEFAULT; |
|
|
967 | ENTER; |
|
|
968 | SAVETMPS; |
|
|
969 | EXTEND (SP, 3); |
|
|
970 | PUSHMARK (SP); |
|
|
971 | PUSHs (&PL_sv_yes); |
|
|
972 | PUSHs (fullname); |
|
|
973 | PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef); |
|
|
974 | PUTBACK; |
|
|
975 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0); |
|
|
976 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
977 | SPAGAIN; |
|
|
978 | FREETMPS; |
|
|
979 | LEAVE; |
|
|
980 | PL_runops = runops_trace; |
|
|
981 | } |
|
|
982 | |
|
|
983 | oldcxix = cxstack_ix; |
712 | } |
984 | } |
713 | |
985 | |
714 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
986 | if (cctx->flags & CC_TRACE_LINE) |
715 | prev->cursp = stacklevel; |
|
|
716 | /* don't add any code here */ |
|
|
717 | } |
|
|
718 | else |
|
|
719 | next->cursp = stacklevel; |
|
|
720 | } |
|
|
721 | else if (next->tmps_ix == -2) |
|
|
722 | croak ("tried to transfer to running coroutine"); |
|
|
723 | else |
|
|
724 | { |
|
|
725 | LOCK; |
|
|
726 | SAVE (prev, -1); /* first get rid of the old state */ |
|
|
727 | UNLOCK; |
|
|
728 | |
|
|
729 | /* create the coroutine for the first time */ |
|
|
730 | if (flags & TRANSFER_SAVE_CCTXT) |
|
|
731 | { |
|
|
732 | if (!prev->stack) |
|
|
733 | allocate_stack (prev, 0); |
|
|
734 | |
|
|
735 | /* the new coroutine starts with start_env again */ |
|
|
736 | PL_top_env = &PL_start_env; |
|
|
737 | |
|
|
738 | if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK) |
|
|
739 | { |
987 | { |
740 | setup_coro (next); |
988 | dSP; |
741 | next->cursp = stacklevel; |
|
|
742 | |
989 | |
743 | prev->stack->refcnt++; |
990 | PL_runops = RUNOPS_DEFAULT; |
744 | prev->stack->usecnt++; |
991 | ENTER; |
745 | next->stack = prev->stack; |
992 | SAVETMPS; |
746 | next->gencnt = prev->gencnt; |
993 | EXTEND (SP, 3); |
|
|
994 | PL_runops = RUNOPS_DEFAULT; |
|
|
995 | PUSHMARK (SP); |
|
|
996 | PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0))); |
|
|
997 | PUSHs (sv_2mortal (newSViv (CopLINE (oldcop)))); |
|
|
998 | PUTBACK; |
|
|
999 | cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0); |
|
|
1000 | if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1001 | SPAGAIN; |
|
|
1002 | FREETMPS; |
|
|
1003 | LEAVE; |
|
|
1004 | PL_runops = runops_trace; |
747 | } |
1005 | } |
748 | else |
|
|
749 | { |
|
|
750 | assert (!next->stack); |
|
|
751 | allocate_stack (next, 1); |
|
|
752 | coro_create (&(next->stack->cctx), |
|
|
753 | setup_coro, (void *)next, |
|
|
754 | next->stack->sptr, labs (next->stack->ssize)); |
|
|
755 | coro_transfer (&(prev->stack->cctx), &(next->stack->cctx)); |
|
|
756 | prev->cursp = stacklevel; |
|
|
757 | /* don't add any code here */ |
|
|
758 | } |
1006 | } |
759 | } |
1007 | } |
|
|
1008 | } |
|
|
1009 | } |
|
|
1010 | |
|
|
1011 | TAINT_NOT; |
|
|
1012 | return 0; |
|
|
1013 | } |
|
|
1014 | |
|
|
1015 | /* inject a fake call to Coro::State::_cctx_init into the execution */ |
|
|
1016 | /* _cctx_init should be careful, as it could be called at almost any time */ |
|
|
1017 | /* during execution of a perl program */ |
|
|
1018 | static void NOINLINE |
|
|
1019 | cctx_prepare (pTHX_ coro_cctx *cctx) |
|
|
1020 | { |
|
|
1021 | dSP; |
|
|
1022 | LOGOP myop; |
|
|
1023 | |
|
|
1024 | PL_top_env = &PL_start_env; |
|
|
1025 | |
|
|
1026 | if (cctx->flags & CC_TRACE) |
|
|
1027 | PL_runops = runops_trace; |
|
|
1028 | |
|
|
1029 | Zero (&myop, 1, LOGOP); |
|
|
1030 | myop.op_next = PL_op; |
|
|
1031 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
|
|
1032 | |
|
|
1033 | PUSHMARK (SP); |
|
|
1034 | EXTEND (SP, 2); |
|
|
1035 | PUSHs (sv_2mortal (newSViv (PTR2IV (cctx)))); |
|
|
1036 | PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE)); |
|
|
1037 | PUTBACK; |
|
|
1038 | PL_op = (OP *)&myop; |
|
|
1039 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
|
|
1040 | SPAGAIN; |
|
|
1041 | } |
|
|
1042 | |
|
|
1043 | /* |
|
|
1044 | * this is a _very_ stripped down perl interpreter ;) |
|
|
1045 | */ |
|
|
1046 | static void |
|
|
1047 | cctx_run (void *arg) |
|
|
1048 | { |
|
|
1049 | dTHX; |
|
|
1050 | |
|
|
1051 | /* cctx_run is the alternative tail of transfer(), so unlock here. */ |
|
|
1052 | UNLOCK; |
|
|
1053 | |
|
|
1054 | /* we now skip the entersub that lead to transfer() */ |
|
|
1055 | PL_op = PL_op->op_next; |
|
|
1056 | |
|
|
1057 | /* inject a fake subroutine call to cctx_init */ |
|
|
1058 | cctx_prepare (aTHX_ (coro_cctx *)arg); |
|
|
1059 | |
|
|
1060 | /* somebody or something will hit me for both perl_run and PL_restartop */ |
|
|
1061 | PL_restartop = PL_op; |
|
|
1062 | perl_run (PL_curinterp); |
|
|
1063 | |
|
|
1064 | /* |
|
|
1065 | * If perl-run returns we assume exit() was being called or the coro |
|
|
1066 | * fell off the end, which seems to be the only valid (non-bug) |
|
|
1067 | * reason for perl_run to return. We try to exit by jumping to the |
|
|
1068 | * bootstrap-time "top" top_env, as we cannot restore the "main" |
|
|
1069 | * coroutine as Coro has no such concept |
|
|
1070 | */ |
|
|
1071 | PL_top_env = main_top_env; |
|
|
1072 | JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */ |
|
|
1073 | } |
|
|
1074 | |
|
|
1075 | static coro_cctx * |
|
|
1076 | cctx_new () |
|
|
1077 | { |
|
|
1078 | coro_cctx *cctx; |
|
|
1079 | void *stack_start; |
|
|
1080 | size_t stack_size; |
|
|
1081 | |
|
|
1082 | ++cctx_count; |
|
|
1083 | |
|
|
1084 | Newz (0, cctx, 1, coro_cctx); |
|
|
1085 | |
|
|
1086 | #if HAVE_MMAP |
|
|
1087 | cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE; |
|
|
1088 | /* mmap supposedly does allocate-on-write for us */ |
|
|
1089 | cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
|
|
1090 | |
|
|
1091 | if (cctx->sptr != (void *)-1) |
|
|
1092 | { |
|
|
1093 | # if CORO_STACKGUARD |
|
|
1094 | mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
1095 | # endif |
|
|
1096 | stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr; |
|
|
1097 | stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE; |
|
|
1098 | cctx->flags |= CC_MAPPED; |
|
|
1099 | } |
|
|
1100 | else |
|
|
1101 | #endif |
|
|
1102 | { |
|
|
1103 | cctx->ssize = coro_stacksize * (long)sizeof (long); |
|
|
1104 | New (0, cctx->sptr, coro_stacksize, long); |
|
|
1105 | |
|
|
1106 | if (!cctx->sptr) |
|
|
1107 | { |
|
|
1108 | perror ("FATAL: unable to allocate stack for coroutine"); |
|
|
1109 | _exit (EXIT_FAILURE); |
|
|
1110 | } |
|
|
1111 | |
|
|
1112 | stack_start = cctx->sptr; |
|
|
1113 | stack_size = cctx->ssize; |
|
|
1114 | } |
|
|
1115 | |
|
|
1116 | REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size); |
|
|
1117 | coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size); |
|
|
1118 | |
|
|
1119 | return cctx; |
|
|
1120 | } |
|
|
1121 | |
|
|
1122 | static void |
|
|
1123 | cctx_destroy (coro_cctx *cctx) |
|
|
1124 | { |
|
|
1125 | if (!cctx) |
|
|
1126 | return; |
|
|
1127 | |
|
|
1128 | --cctx_count; |
|
|
1129 | |
|
|
1130 | #if CORO_USE_VALGRIND |
|
|
1131 | VALGRIND_STACK_DEREGISTER (cctx->valgrind_id); |
|
|
1132 | #endif |
|
|
1133 | |
|
|
1134 | #if HAVE_MMAP |
|
|
1135 | if (cctx->flags & CC_MAPPED) |
|
|
1136 | munmap (cctx->sptr, cctx->ssize); |
|
|
1137 | else |
|
|
1138 | #endif |
|
|
1139 | Safefree (cctx->sptr); |
|
|
1140 | |
|
|
1141 | Safefree (cctx); |
|
|
1142 | } |
|
|
1143 | |
|
|
1144 | /* wether this cctx should be destructed */ |
|
|
1145 | #define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE)) |
|
|
1146 | |
|
|
1147 | static coro_cctx * |
|
|
1148 | cctx_get (pTHX) |
|
|
1149 | { |
|
|
1150 | while (expect_true (cctx_first)) |
|
|
1151 | { |
|
|
1152 | coro_cctx *cctx = cctx_first; |
|
|
1153 | cctx_first = cctx->next; |
|
|
1154 | --cctx_idle; |
|
|
1155 | |
|
|
1156 | if (expect_true (!CCTX_EXPIRED (cctx))) |
|
|
1157 | return cctx; |
|
|
1158 | |
|
|
1159 | cctx_destroy (cctx); |
|
|
1160 | } |
|
|
1161 | |
|
|
1162 | return cctx_new (); |
|
|
1163 | } |
|
|
1164 | |
|
|
1165 | static void |
|
|
1166 | cctx_put (coro_cctx *cctx) |
|
|
1167 | { |
|
|
1168 | /* free another cctx if overlimit */ |
|
|
1169 | if (expect_false (cctx_idle >= MAX_IDLE_CCTX)) |
|
|
1170 | { |
|
|
1171 | coro_cctx *first = cctx_first; |
|
|
1172 | cctx_first = first->next; |
|
|
1173 | --cctx_idle; |
|
|
1174 | |
|
|
1175 | cctx_destroy (first); |
|
|
1176 | } |
|
|
1177 | |
|
|
1178 | ++cctx_idle; |
|
|
1179 | cctx->next = cctx_first; |
|
|
1180 | cctx_first = cctx; |
|
|
1181 | } |
|
|
1182 | |
|
|
1183 | /** coroutine switching *****************************************************/ |
|
|
1184 | |
|
|
1185 | static void |
|
|
1186 | transfer_check (pTHX_ struct coro *prev, struct coro *next) |
|
|
1187 | { |
|
|
1188 | if (expect_true (prev != next)) |
|
|
1189 | { |
|
|
1190 | if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW)))) |
|
|
1191 | croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states"); |
|
|
1192 | |
|
|
1193 | if (expect_false (next->flags & CF_RUNNING)) |
|
|
1194 | croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states"); |
|
|
1195 | |
|
|
1196 | if (expect_false (next->flags & CF_DESTROYED)) |
|
|
1197 | croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states"); |
|
|
1198 | |
|
|
1199 | #if !PERL_VERSION_ATLEAST (5,10,0) |
|
|
1200 | if (expect_false (PL_lex_state != LEX_NOTPARSING)) |
|
|
1201 | croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version"); |
|
|
1202 | #endif |
|
|
1203 | } |
|
|
1204 | } |
|
|
1205 | |
|
|
1206 | /* always use the TRANSFER macro */ |
|
|
1207 | static void NOINLINE |
|
|
1208 | transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx) |
|
|
1209 | { |
|
|
1210 | dSTACKLEVEL; |
|
|
1211 | static volatile int has_throw; |
|
|
1212 | |
|
|
1213 | /* sometimes transfer is only called to set idle_sp */ |
|
|
1214 | if (expect_false (!next)) |
|
|
1215 | { |
|
|
1216 | ((coro_cctx *)prev)->idle_sp = STACKLEVEL; |
|
|
1217 | assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */ |
|
|
1218 | } |
|
|
1219 | else if (expect_true (prev != next)) |
|
|
1220 | { |
|
|
1221 | coro_cctx *prev__cctx; |
|
|
1222 | |
|
|
1223 | if (expect_false (prev->flags & CF_NEW)) |
|
|
1224 | { |
|
|
1225 | /* create a new empty context */ |
|
|
1226 | Newz (0, prev->cctx, 1, coro_cctx); |
|
|
1227 | prev->flags &= ~CF_NEW; |
|
|
1228 | prev->flags |= CF_RUNNING; |
|
|
1229 | } |
|
|
1230 | |
|
|
1231 | prev->flags &= ~CF_RUNNING; |
|
|
1232 | next->flags |= CF_RUNNING; |
|
|
1233 | |
|
|
1234 | LOCK; |
|
|
1235 | |
|
|
1236 | /* first get rid of the old state */ |
|
|
1237 | save_perl (aTHX_ prev); |
|
|
1238 | |
|
|
1239 | if (expect_false (next->flags & CF_NEW)) |
|
|
1240 | { |
|
|
1241 | /* need to start coroutine */ |
|
|
1242 | next->flags &= ~CF_NEW; |
|
|
1243 | /* setup coroutine call */ |
|
|
1244 | coro_setup (aTHX_ next); |
|
|
1245 | } |
760 | else |
1246 | else |
|
|
1247 | load_perl (aTHX_ next); |
|
|
1248 | |
|
|
1249 | prev__cctx = prev->cctx; |
|
|
1250 | |
|
|
1251 | /* possibly "free" the cctx */ |
|
|
1252 | if (expect_true ( |
|
|
1253 | prev__cctx->idle_sp == STACKLEVEL |
|
|
1254 | && !(prev__cctx->flags & CC_TRACE) |
|
|
1255 | && !force_cctx |
|
|
1256 | )) |
|
|
1257 | { |
|
|
1258 | /* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */ |
|
|
1259 | assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te)); |
|
|
1260 | |
|
|
1261 | prev->cctx = 0; |
|
|
1262 | |
|
|
1263 | /* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */ |
|
|
1264 | /* without this the next cctx_get might destroy the prev__cctx while still in use */ |
|
|
1265 | if (expect_false (CCTX_EXPIRED (prev__cctx))) |
|
|
1266 | if (!next->cctx) |
|
|
1267 | next->cctx = cctx_get (aTHX); |
|
|
1268 | |
|
|
1269 | cctx_put (prev__cctx); |
|
|
1270 | } |
|
|
1271 | |
|
|
1272 | ++next->usecount; |
|
|
1273 | |
|
|
1274 | if (expect_true (!next->cctx)) |
|
|
1275 | next->cctx = cctx_get (aTHX); |
|
|
1276 | |
|
|
1277 | has_throw = !!next->throw; |
|
|
1278 | |
|
|
1279 | if (expect_false (prev__cctx != next->cctx)) |
|
|
1280 | { |
|
|
1281 | prev__cctx->top_env = PL_top_env; |
|
|
1282 | PL_top_env = next->cctx->top_env; |
|
|
1283 | coro_transfer (&prev__cctx->cctx, &next->cctx->cctx); |
|
|
1284 | } |
|
|
1285 | |
|
|
1286 | free_coro_mortal (aTHX); |
|
|
1287 | UNLOCK; |
|
|
1288 | |
|
|
1289 | if (expect_false (has_throw)) |
|
|
1290 | { |
|
|
1291 | struct coro *coro = SvSTATE (coro_current); |
|
|
1292 | |
|
|
1293 | if (coro->throw) |
761 | { |
1294 | { |
|
|
1295 | SV *exception = coro->throw; |
|
|
1296 | coro->throw = 0; |
|
|
1297 | sv_setsv (ERRSV, exception); |
762 | setup_coro (next); |
1298 | croak (0); |
763 | next->cursp = stacklevel; |
|
|
764 | } |
1299 | } |
765 | } |
1300 | } |
766 | } |
1301 | } |
|
|
1302 | } |
|
|
1303 | |
|
|
1304 | struct transfer_args |
|
|
1305 | { |
|
|
1306 | struct coro *prev, *next; |
|
|
1307 | }; |
|
|
1308 | |
|
|
1309 | #define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx)) |
|
|
1310 | #define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next) |
|
|
1311 | |
|
|
1312 | /** high level stuff ********************************************************/ |
|
|
1313 | |
|
|
1314 | static int |
|
|
1315 | coro_state_destroy (pTHX_ struct coro *coro) |
|
|
1316 | { |
|
|
1317 | if (coro->flags & CF_DESTROYED) |
|
|
1318 | return 0; |
|
|
1319 | |
|
|
1320 | coro->flags |= CF_DESTROYED; |
|
|
1321 | |
|
|
1322 | if (coro->flags & CF_READY) |
|
|
1323 | { |
|
|
1324 | /* reduce nready, as destroying a ready coro effectively unreadies it */ |
|
|
1325 | /* alternative: look through all ready queues and remove the coro */ |
|
|
1326 | LOCK; |
|
|
1327 | --coro_nready; |
|
|
1328 | UNLOCK; |
|
|
1329 | } |
|
|
1330 | else |
|
|
1331 | coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */ |
|
|
1332 | |
|
|
1333 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
1334 | { |
|
|
1335 | struct coro temp; |
|
|
1336 | |
|
|
1337 | if (coro->flags & CF_RUNNING) |
|
|
1338 | croak ("FATAL: tried to destroy currently running coroutine"); |
|
|
1339 | |
|
|
1340 | save_perl (aTHX_ &temp); |
|
|
1341 | load_perl (aTHX_ coro); |
|
|
1342 | |
|
|
1343 | coro_destroy (aTHX_ coro); |
|
|
1344 | |
|
|
1345 | load_perl (aTHX_ &temp); |
|
|
1346 | |
|
|
1347 | coro->slot = 0; |
|
|
1348 | } |
|
|
1349 | |
|
|
1350 | cctx_destroy (coro->cctx); |
|
|
1351 | SvREFCNT_dec (coro->args); |
|
|
1352 | |
|
|
1353 | if (coro->next) coro->next->prev = coro->prev; |
|
|
1354 | if (coro->prev) coro->prev->next = coro->next; |
|
|
1355 | if (coro == coro_first) coro_first = coro->next; |
|
|
1356 | |
|
|
1357 | return 1; |
|
|
1358 | } |
|
|
1359 | |
|
|
1360 | static int |
|
|
1361 | coro_state_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1362 | { |
|
|
1363 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1364 | mg->mg_ptr = 0; |
|
|
1365 | |
|
|
1366 | coro->hv = 0; |
|
|
1367 | |
|
|
1368 | if (--coro->refcnt < 0) |
|
|
1369 | { |
|
|
1370 | coro_state_destroy (aTHX_ coro); |
|
|
1371 | Safefree (coro); |
|
|
1372 | } |
|
|
1373 | |
|
|
1374 | return 0; |
|
|
1375 | } |
|
|
1376 | |
|
|
1377 | static int |
|
|
1378 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
|
|
1379 | { |
|
|
1380 | struct coro *coro = (struct coro *)mg->mg_ptr; |
|
|
1381 | |
|
|
1382 | ++coro->refcnt; |
|
|
1383 | |
|
|
1384 | return 0; |
|
|
1385 | } |
|
|
1386 | |
|
|
1387 | static MGVTBL coro_state_vtbl = { |
|
|
1388 | 0, 0, 0, 0, |
|
|
1389 | coro_state_free, |
|
|
1390 | 0, |
|
|
1391 | #ifdef MGf_DUP |
|
|
1392 | coro_state_dup, |
|
|
1393 | #else |
|
|
1394 | # define MGf_DUP 0 |
|
|
1395 | #endif |
|
|
1396 | }; |
|
|
1397 | |
|
|
1398 | static void |
|
|
1399 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv) |
|
|
1400 | { |
|
|
1401 | ta->prev = SvSTATE (prev_sv); |
|
|
1402 | ta->next = SvSTATE (next_sv); |
|
|
1403 | TRANSFER_CHECK (*ta); |
|
|
1404 | } |
|
|
1405 | |
|
|
1406 | static void |
|
|
1407 | api_transfer (SV *prev_sv, SV *next_sv) |
|
|
1408 | { |
|
|
1409 | dTHX; |
|
|
1410 | struct transfer_args ta; |
|
|
1411 | |
|
|
1412 | prepare_transfer (aTHX_ &ta, prev_sv, next_sv); |
|
|
1413 | TRANSFER (ta, 1); |
|
|
1414 | } |
|
|
1415 | |
|
|
1416 | /** Coro ********************************************************************/ |
|
|
1417 | |
|
|
1418 | static void |
|
|
1419 | coro_enq (pTHX_ SV *coro_sv) |
|
|
1420 | { |
|
|
1421 | av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv); |
|
|
1422 | } |
|
|
1423 | |
|
|
1424 | static SV * |
|
|
1425 | coro_deq (pTHX) |
|
|
1426 | { |
|
|
1427 | int prio; |
|
|
1428 | |
|
|
1429 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; ) |
|
|
1430 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
1431 | return av_shift (coro_ready [prio]); |
|
|
1432 | |
|
|
1433 | return 0; |
|
|
1434 | } |
|
|
1435 | |
|
|
1436 | static int |
|
|
1437 | api_ready (SV *coro_sv) |
|
|
1438 | { |
|
|
1439 | dTHX; |
|
|
1440 | struct coro *coro; |
|
|
1441 | SV *sv_hook; |
|
|
1442 | void (*xs_hook)(void); |
|
|
1443 | |
|
|
1444 | if (SvROK (coro_sv)) |
|
|
1445 | coro_sv = SvRV (coro_sv); |
|
|
1446 | |
|
|
1447 | coro = SvSTATE (coro_sv); |
|
|
1448 | |
|
|
1449 | if (coro->flags & CF_READY) |
|
|
1450 | return 0; |
|
|
1451 | |
|
|
1452 | coro->flags |= CF_READY; |
767 | |
1453 | |
768 | LOCK; |
1454 | LOCK; |
769 | if (coro_mortal) |
1455 | |
770 | { |
1456 | sv_hook = coro_nready ? 0 : coro_readyhook; |
771 | SvREFCNT_dec (coro_mortal); |
1457 | xs_hook = coro_nready ? 0 : coroapi.readyhook; |
772 | coro_mortal = 0; |
1458 | |
773 | } |
1459 | coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv)); |
|
|
1460 | ++coro_nready; |
|
|
1461 | |
774 | UNLOCK; |
1462 | UNLOCK; |
775 | } |
1463 | |
|
|
1464 | if (sv_hook) |
|
|
1465 | { |
|
|
1466 | dSP; |
776 | |
1467 | |
777 | /* use this function pointer to call the above function */ |
1468 | ENTER; |
778 | /* this is done to increase chances of the compiler not inlining the call */ |
1469 | SAVETMPS; |
779 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
780 | |
1470 | |
781 | #define SV_CORO(sv,func) \ |
1471 | PUSHMARK (SP); |
782 | do { \ |
1472 | PUTBACK; |
783 | if (SvROK (sv)) \ |
1473 | call_sv (sv_hook, G_DISCARD); |
784 | sv = SvRV (sv); \ |
1474 | SPAGAIN; |
785 | \ |
|
|
786 | if (SvTYPE (sv) == SVt_PVHV) \ |
|
|
787 | { \ |
|
|
788 | HE *he = hv_fetch_ent ((HV *)sv, ucoro_state_sv, 0, ucoro_state_hash); \ |
|
|
789 | \ |
|
|
790 | if (!he) \ |
|
|
791 | croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \ |
|
|
792 | \ |
|
|
793 | (sv) = SvRV (HeVAL(he)); \ |
|
|
794 | } \ |
|
|
795 | \ |
|
|
796 | /* must also be changed inside Coro::Cont::yield */ \ |
|
|
797 | if (!SvOBJECT (sv) || SvSTASH (sv) != coro_state_stash) \ |
|
|
798 | croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \ |
|
|
799 | \ |
|
|
800 | } while(0) |
|
|
801 | |
1475 | |
802 | #define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv)) |
1476 | FREETMPS; |
|
|
1477 | LEAVE; |
|
|
1478 | } |
|
|
1479 | |
|
|
1480 | if (xs_hook) |
|
|
1481 | xs_hook (); |
|
|
1482 | |
|
|
1483 | return 1; |
|
|
1484 | } |
|
|
1485 | |
|
|
1486 | static int |
|
|
1487 | api_is_ready (SV *coro_sv) |
|
|
1488 | { |
|
|
1489 | dTHX; |
|
|
1490 | return !!(SvSTATE (coro_sv)->flags & CF_READY); |
|
|
1491 | } |
803 | |
1492 | |
804 | static void |
1493 | static void |
805 | api_transfer (pTHX_ SV *prev, SV *next, int flags) |
1494 | prepare_schedule (pTHX_ struct transfer_args *ta) |
806 | { |
1495 | { |
807 | SV_CORO (prev, "Coro::transfer"); |
1496 | SV *prev_sv, *next_sv; |
808 | SV_CORO (next, "Coro::transfer"); |
|
|
809 | |
1497 | |
810 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1498 | for (;;) |
811 | } |
1499 | { |
|
|
1500 | LOCK; |
|
|
1501 | next_sv = coro_deq (aTHX); |
812 | |
1502 | |
813 | /** Coro ********************************************************************/ |
1503 | /* nothing to schedule: call the idle handler */ |
|
|
1504 | if (expect_false (!next_sv)) |
|
|
1505 | { |
|
|
1506 | dSP; |
|
|
1507 | UNLOCK; |
814 | |
1508 | |
815 | #define PRIO_MAX 3 |
1509 | ENTER; |
816 | #define PRIO_HIGH 1 |
1510 | SAVETMPS; |
817 | #define PRIO_NORMAL 0 |
|
|
818 | #define PRIO_LOW -1 |
|
|
819 | #define PRIO_IDLE -3 |
|
|
820 | #define PRIO_MIN -4 |
|
|
821 | |
1511 | |
822 | /* for Coro.pm */ |
1512 | PUSHMARK (SP); |
823 | static GV *coro_current, *coro_idle; |
1513 | PUTBACK; |
824 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
1514 | call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD); |
825 | static int coro_nready; |
1515 | SPAGAIN; |
|
|
1516 | |
|
|
1517 | FREETMPS; |
|
|
1518 | LEAVE; |
|
|
1519 | continue; |
|
|
1520 | } |
|
|
1521 | |
|
|
1522 | ta->next = SvSTATE (next_sv); |
|
|
1523 | |
|
|
1524 | /* cannot transfer to destroyed coros, skip and look for next */ |
|
|
1525 | if (expect_false (ta->next->flags & CF_DESTROYED)) |
|
|
1526 | { |
|
|
1527 | UNLOCK; |
|
|
1528 | SvREFCNT_dec (next_sv); |
|
|
1529 | /* coro_nready is already taken care of by destroy */ |
|
|
1530 | continue; |
|
|
1531 | } |
|
|
1532 | |
|
|
1533 | --coro_nready; |
|
|
1534 | UNLOCK; |
|
|
1535 | break; |
|
|
1536 | } |
|
|
1537 | |
|
|
1538 | /* free this only after the transfer */ |
|
|
1539 | prev_sv = SvRV (coro_current); |
|
|
1540 | ta->prev = SvSTATE (prev_sv); |
|
|
1541 | TRANSFER_CHECK (*ta); |
|
|
1542 | assert (ta->next->flags & CF_READY); |
|
|
1543 | ta->next->flags &= ~CF_READY; |
|
|
1544 | SvRV_set (coro_current, next_sv); |
|
|
1545 | |
|
|
1546 | LOCK; |
|
|
1547 | free_coro_mortal (aTHX); |
|
|
1548 | coro_mortal = prev_sv; |
|
|
1549 | UNLOCK; |
|
|
1550 | } |
826 | |
1551 | |
827 | static void |
1552 | static void |
828 | coro_enq (pTHX_ SV *sv) |
1553 | prepare_cede (pTHX_ struct transfer_args *ta) |
829 | { |
1554 | { |
830 | SV **xprio; |
1555 | api_ready (coro_current); |
831 | int prio; |
1556 | prepare_schedule (aTHX_ ta); |
|
|
1557 | } |
832 | |
1558 | |
833 | if (SvTYPE (sv) != SVt_PVHV) |
1559 | static int |
834 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
1560 | prepare_cede_notself (pTHX_ struct transfer_args *ta) |
835 | |
1561 | { |
836 | xprio = hv_fetch ((HV *)sv, "prio", 4, 0); |
|
|
837 | prio = xprio ? SvIV (*xprio) : PRIO_NORMAL; |
|
|
838 | |
|
|
839 | prio = prio > PRIO_MAX ? PRIO_MAX |
|
|
840 | : prio < PRIO_MIN ? PRIO_MIN |
|
|
841 | : prio; |
|
|
842 | |
|
|
843 | av_push (coro_ready [prio - PRIO_MIN], sv); |
|
|
844 | coro_nready++; |
1562 | if (coro_nready) |
845 | } |
|
|
846 | |
|
|
847 | static SV * |
|
|
848 | coro_deq (pTHX_ int min_prio) |
|
|
849 | { |
|
|
850 | int prio = PRIO_MAX - PRIO_MIN; |
|
|
851 | |
|
|
852 | min_prio -= PRIO_MIN; |
|
|
853 | if (min_prio < 0) |
|
|
854 | min_prio = 0; |
|
|
855 | |
|
|
856 | for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; ) |
|
|
857 | if (AvFILLp (coro_ready [prio]) >= 0) |
|
|
858 | { |
1563 | { |
859 | coro_nready--; |
1564 | SV *prev = SvRV (coro_current); |
860 | return av_shift (coro_ready [prio]); |
1565 | prepare_schedule (aTHX_ ta); |
|
|
1566 | api_ready (prev); |
|
|
1567 | return 1; |
861 | } |
1568 | } |
862 | |
1569 | else |
863 | return 0; |
1570 | return 0; |
864 | } |
|
|
865 | |
|
|
866 | static void |
|
|
867 | api_ready (SV *coro) |
|
|
868 | { |
|
|
869 | dTHX; |
|
|
870 | |
|
|
871 | if (SvROK (coro)) |
|
|
872 | coro = SvRV (coro); |
|
|
873 | |
|
|
874 | LOCK; |
|
|
875 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
|
|
876 | UNLOCK; |
|
|
877 | } |
1571 | } |
878 | |
1572 | |
879 | static void |
1573 | static void |
880 | api_schedule (void) |
1574 | api_schedule (void) |
881 | { |
1575 | { |
882 | dTHX; |
1576 | dTHX; |
|
|
1577 | struct transfer_args ta; |
883 | |
1578 | |
884 | SV *prev, *next; |
1579 | prepare_schedule (aTHX_ &ta); |
|
|
1580 | TRANSFER (ta, 1); |
|
|
1581 | } |
885 | |
1582 | |
886 | LOCK; |
1583 | static int |
|
|
1584 | api_cede (void) |
|
|
1585 | { |
|
|
1586 | dTHX; |
|
|
1587 | struct transfer_args ta; |
887 | |
1588 | |
888 | prev = SvRV (GvSV (coro_current)); |
1589 | prepare_cede (aTHX_ &ta); |
889 | next = coro_deq (aTHX_ PRIO_MIN); |
|
|
890 | |
1590 | |
891 | if (!next) |
1591 | if (expect_true (ta.prev != ta.next)) |
892 | next = SvREFCNT_inc (SvRV (GvSV (coro_idle))); |
1592 | { |
|
|
1593 | TRANSFER (ta, 1); |
|
|
1594 | return 1; |
|
|
1595 | } |
|
|
1596 | else |
|
|
1597 | return 0; |
|
|
1598 | } |
893 | |
1599 | |
894 | /* free this only after the transfer */ |
1600 | static int |
895 | coro_mortal = prev; |
1601 | api_cede_notself (void) |
896 | SV_CORO (prev, "Coro::schedule"); |
1602 | { |
|
|
1603 | dTHX; |
|
|
1604 | struct transfer_args ta; |
897 | |
1605 | |
898 | SvRV (GvSV (coro_current)) = next; |
1606 | if (prepare_cede_notself (aTHX_ &ta)) |
899 | |
1607 | { |
900 | SV_CORO (next, "Coro::schedule"); |
1608 | TRANSFER (ta, 1); |
901 | |
1609 | return 1; |
902 | UNLOCK; |
1610 | } |
903 | |
1611 | else |
904 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), |
1612 | return 0; |
905 | TRANSFER_SAVE_ALL | TRANSFER_LAZY_STACK); |
|
|
906 | } |
1613 | } |
907 | |
1614 | |
908 | static void |
1615 | static void |
909 | api_cede (void) |
1616 | api_trace (SV *coro_sv, int flags) |
910 | { |
1617 | { |
911 | dTHX; |
1618 | dTHX; |
|
|
1619 | struct coro *coro = SvSTATE (coro_sv); |
912 | |
1620 | |
913 | LOCK; |
1621 | if (flags & CC_TRACE) |
914 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
1622 | { |
915 | UNLOCK; |
1623 | if (!coro->cctx) |
|
|
1624 | coro->cctx = cctx_new (); |
|
|
1625 | else if (!(coro->cctx->flags & CC_TRACE)) |
|
|
1626 | croak ("cannot enable tracing on coroutine with custom stack"); |
916 | |
1627 | |
|
|
1628 | coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL)); |
|
|
1629 | } |
|
|
1630 | else if (coro->cctx && coro->cctx->flags & CC_TRACE) |
|
|
1631 | { |
|
|
1632 | coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL); |
|
|
1633 | |
|
|
1634 | if (coro->flags & CF_RUNNING) |
|
|
1635 | PL_runops = RUNOPS_DEFAULT; |
|
|
1636 | else |
|
|
1637 | coro->slot->runops = RUNOPS_DEFAULT; |
|
|
1638 | } |
|
|
1639 | } |
|
|
1640 | |
|
|
1641 | static int |
|
|
1642 | coro_gensub_free (pTHX_ SV *sv, MAGIC *mg) |
|
|
1643 | { |
|
|
1644 | AV *padlist; |
|
|
1645 | AV *av = (AV *)mg->mg_obj; |
|
|
1646 | |
|
|
1647 | abort (); |
|
|
1648 | |
|
|
1649 | return 0; |
|
|
1650 | } |
|
|
1651 | |
|
|
1652 | static MGVTBL coro_gensub_vtbl = { |
|
|
1653 | 0, 0, 0, 0, |
|
|
1654 | coro_gensub_free |
|
|
1655 | }; |
|
|
1656 | |
|
|
1657 | /*****************************************************************************/ |
|
|
1658 | /* PerlIO::cede */ |
|
|
1659 | |
|
|
1660 | typedef struct |
|
|
1661 | { |
|
|
1662 | PerlIOBuf base; |
|
|
1663 | NV next, every; |
|
|
1664 | } PerlIOCede; |
|
|
1665 | |
|
|
1666 | static IV |
|
|
1667 | PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab) |
|
|
1668 | { |
|
|
1669 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1670 | |
|
|
1671 | self->every = SvCUR (arg) ? SvNV (arg) : 0.01; |
|
|
1672 | self->next = nvtime () + self->every; |
|
|
1673 | |
|
|
1674 | return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab); |
|
|
1675 | } |
|
|
1676 | |
|
|
1677 | static SV * |
|
|
1678 | PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags) |
|
|
1679 | { |
|
|
1680 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1681 | |
|
|
1682 | return newSVnv (self->every); |
|
|
1683 | } |
|
|
1684 | |
|
|
1685 | static IV |
|
|
1686 | PerlIOCede_flush (pTHX_ PerlIO *f) |
|
|
1687 | { |
|
|
1688 | PerlIOCede *self = PerlIOSelf (f, PerlIOCede); |
|
|
1689 | double now = nvtime (); |
|
|
1690 | |
|
|
1691 | if (now >= self->next) |
|
|
1692 | { |
917 | api_schedule (); |
1693 | api_cede (); |
918 | } |
1694 | self->next = now + self->every; |
|
|
1695 | } |
919 | |
1696 | |
|
|
1697 | return PerlIOBuf_flush (aTHX_ f); |
|
|
1698 | } |
|
|
1699 | |
|
|
1700 | static PerlIO_funcs PerlIO_cede = |
|
|
1701 | { |
|
|
1702 | sizeof(PerlIO_funcs), |
|
|
1703 | "cede", |
|
|
1704 | sizeof(PerlIOCede), |
|
|
1705 | PERLIO_K_DESTRUCT | PERLIO_K_RAW, |
|
|
1706 | PerlIOCede_pushed, |
|
|
1707 | PerlIOBuf_popped, |
|
|
1708 | PerlIOBuf_open, |
|
|
1709 | PerlIOBase_binmode, |
|
|
1710 | PerlIOCede_getarg, |
|
|
1711 | PerlIOBase_fileno, |
|
|
1712 | PerlIOBuf_dup, |
|
|
1713 | PerlIOBuf_read, |
|
|
1714 | PerlIOBuf_unread, |
|
|
1715 | PerlIOBuf_write, |
|
|
1716 | PerlIOBuf_seek, |
|
|
1717 | PerlIOBuf_tell, |
|
|
1718 | PerlIOBuf_close, |
|
|
1719 | PerlIOCede_flush, |
|
|
1720 | PerlIOBuf_fill, |
|
|
1721 | PerlIOBase_eof, |
|
|
1722 | PerlIOBase_error, |
|
|
1723 | PerlIOBase_clearerr, |
|
|
1724 | PerlIOBase_setlinebuf, |
|
|
1725 | PerlIOBuf_get_base, |
|
|
1726 | PerlIOBuf_bufsiz, |
|
|
1727 | PerlIOBuf_get_ptr, |
|
|
1728 | PerlIOBuf_get_cnt, |
|
|
1729 | PerlIOBuf_set_ptrcnt, |
|
|
1730 | }; |
|
|
1731 | |
|
|
1732 | |
920 | MODULE = Coro::State PACKAGE = Coro::State |
1733 | MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_ |
921 | |
1734 | |
922 | PROTOTYPES: ENABLE |
1735 | PROTOTYPES: DISABLE |
923 | |
1736 | |
924 | BOOT: |
1737 | BOOT: |
925 | { /* {} necessary for stoopid perl-5.6.x */ |
1738 | { |
926 | #ifdef USE_ITHREADS |
1739 | #ifdef USE_ITHREADS |
927 | MUTEX_INIT (&coro_mutex); |
1740 | MUTEX_INIT (&coro_mutex); |
928 | #endif |
1741 | #endif |
929 | BOOT_PAGESIZE; |
1742 | BOOT_PAGESIZE; |
930 | |
1743 | |
931 | ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1744 | irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV); |
932 | PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1); |
1745 | stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO); |
|
|
1746 | |
|
|
1747 | orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get; |
|
|
1748 | orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set; |
|
|
1749 | orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr; |
|
|
1750 | |
|
|
1751 | hv_sig = coro_get_hv (aTHX_ "SIG", TRUE); |
|
|
1752 | rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV)); |
|
|
1753 | rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV)); |
|
|
1754 | |
933 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
1755 | coro_state_stash = gv_stashpv ("Coro::State", TRUE); |
934 | |
1756 | |
935 | newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV)); |
1757 | newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE)); |
936 | newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV)); |
1758 | newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB)); |
937 | newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV)); |
1759 | newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE)); |
938 | newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT)); |
1760 | newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL)); |
939 | |
1761 | |
940 | main_mainstack = PL_mainstack; |
1762 | main_mainstack = PL_mainstack; |
|
|
1763 | main_top_env = PL_top_env; |
941 | |
1764 | |
|
|
1765 | while (main_top_env->je_prev) |
|
|
1766 | main_top_env = main_top_env->je_prev; |
|
|
1767 | |
942 | coroapi.ver = CORO_API_VERSION; |
1768 | coroapi.ver = CORO_API_VERSION; |
|
|
1769 | coroapi.rev = CORO_API_REVISION; |
943 | coroapi.transfer = api_transfer; |
1770 | coroapi.transfer = api_transfer; |
944 | } |
|
|
945 | |
1771 | |
946 | Coro::State |
1772 | { |
|
|
1773 | SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0); |
|
|
1774 | |
|
|
1775 | if (!svp) croak ("Time::HiRes is required"); |
|
|
1776 | if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer"); |
|
|
1777 | |
|
|
1778 | nvtime = INT2PTR (double (*)(), SvIV (*svp)); |
|
|
1779 | } |
|
|
1780 | |
|
|
1781 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
|
|
1782 | } |
|
|
1783 | |
|
|
1784 | SV * |
947 | new (char *klass, ...) |
1785 | new (char *klass, ...) |
948 | PROTOTYPE: $@ |
|
|
949 | CODE: |
1786 | CODE: |
950 | { |
1787 | { |
951 | Coro__State coro; |
1788 | struct coro *coro; |
|
|
1789 | MAGIC *mg; |
|
|
1790 | HV *hv; |
952 | int i; |
1791 | int i; |
953 | |
1792 | |
954 | if (!SvOK (ST (1))) |
|
|
955 | croak ("Coro::State::new needs something callable as first argument"); |
|
|
956 | |
|
|
957 | Newz (0, coro, 1, struct coro); |
1793 | Newz (0, coro, 1, struct coro); |
958 | coro->args = newAV (); |
1794 | coro->args = newAV (); |
|
|
1795 | coro->flags = CF_NEW; |
959 | |
1796 | |
|
|
1797 | if (coro_first) coro_first->prev = coro; |
|
|
1798 | coro->next = coro_first; |
|
|
1799 | coro_first = coro; |
|
|
1800 | |
|
|
1801 | coro->hv = hv = newHV (); |
|
|
1802 | mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0); |
|
|
1803 | mg->mg_flags |= MGf_DUP; |
|
|
1804 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
|
|
1805 | |
|
|
1806 | av_extend (coro->args, items - 1); |
960 | for (i = 1; i < items; i++) |
1807 | for (i = 1; i < items; i++) |
961 | av_push (coro->args, newSVsv (ST (i))); |
1808 | av_push (coro->args, newSVsv (ST (i))); |
962 | |
|
|
963 | RETVAL = coro; |
|
|
964 | |
|
|
965 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
|
|
966 | /*coro->stack = 0;*/ |
|
|
967 | } |
1809 | } |
968 | OUTPUT: |
1810 | OUTPUT: |
969 | RETVAL |
1811 | RETVAL |
970 | |
1812 | |
|
|
1813 | # these not obviously related functions are all rolled into the same xs |
|
|
1814 | # function to increase chances that they all will call transfer with the same |
|
|
1815 | # stack offset |
971 | void |
1816 | void |
972 | transfer(prev, next, flags) |
1817 | _set_stacklevel (...) |
973 | SV *prev |
1818 | ALIAS: |
974 | SV *next |
1819 | Coro::State::transfer = 1 |
975 | int flags |
1820 | Coro::schedule = 2 |
976 | PROTOTYPE: @ |
1821 | Coro::cede = 3 |
|
|
1822 | Coro::cede_notself = 4 |
977 | CODE: |
1823 | CODE: |
|
|
1824 | { |
|
|
1825 | struct transfer_args ta; |
|
|
1826 | |
978 | PUTBACK; |
1827 | PUTBACK; |
979 | SV_CORO (next, "Coro::transfer"); |
1828 | switch (ix) |
980 | SV_CORO (prev, "Coro::transfer"); |
1829 | { |
981 | coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags); |
1830 | case 0: |
|
|
1831 | ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0))); |
|
|
1832 | ta.next = 0; |
|
|
1833 | break; |
|
|
1834 | |
|
|
1835 | case 1: |
|
|
1836 | if (items != 2) |
|
|
1837 | croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items); |
|
|
1838 | |
|
|
1839 | prepare_transfer (aTHX_ &ta, ST (0), ST (1)); |
|
|
1840 | break; |
|
|
1841 | |
|
|
1842 | case 2: |
|
|
1843 | prepare_schedule (aTHX_ &ta); |
|
|
1844 | break; |
|
|
1845 | |
|
|
1846 | case 3: |
|
|
1847 | prepare_cede (aTHX_ &ta); |
|
|
1848 | break; |
|
|
1849 | |
|
|
1850 | case 4: |
|
|
1851 | if (!prepare_cede_notself (aTHX_ &ta)) |
|
|
1852 | XSRETURN_EMPTY; |
|
|
1853 | |
|
|
1854 | break; |
|
|
1855 | } |
982 | SPAGAIN; |
1856 | SPAGAIN; |
983 | |
1857 | |
|
|
1858 | BARRIER; |
|
|
1859 | PUTBACK; |
|
|
1860 | TRANSFER (ta, 0); |
|
|
1861 | SPAGAIN; /* might be the sp of a different coroutine now */ |
|
|
1862 | /* be extra careful not to ever do anything after TRANSFER */ |
|
|
1863 | } |
|
|
1864 | |
|
|
1865 | bool |
|
|
1866 | _destroy (SV *coro_sv) |
|
|
1867 | CODE: |
|
|
1868 | RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv)); |
|
|
1869 | OUTPUT: |
|
|
1870 | RETVAL |
|
|
1871 | |
984 | void |
1872 | void |
985 | DESTROY(coro) |
|
|
986 | Coro::State coro |
|
|
987 | CODE: |
|
|
988 | |
|
|
989 | if (coro->mainstack && coro->mainstack != main_mainstack) |
|
|
990 | { |
|
|
991 | struct coro temp; |
|
|
992 | |
|
|
993 | PUTBACK; |
|
|
994 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
|
|
995 | LOAD (aTHX_ coro); |
|
|
996 | SPAGAIN; |
|
|
997 | |
|
|
998 | destroy_stacks (aTHX); |
|
|
999 | |
|
|
1000 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
|
|
1001 | SPAGAIN; |
|
|
1002 | |
|
|
1003 | coro->mainstack = 0; |
|
|
1004 | } |
|
|
1005 | |
|
|
1006 | deallocate_stack (coro); |
|
|
1007 | SvREFCNT_dec (coro->args); |
|
|
1008 | Safefree (coro); |
|
|
1009 | |
|
|
1010 | void |
|
|
1011 | _exit(code) |
1873 | _exit (int code) |
1012 | int code |
|
|
1013 | PROTOTYPE: $ |
1874 | PROTOTYPE: $ |
1014 | CODE: |
1875 | CODE: |
1015 | _exit (code); |
1876 | _exit (code); |
1016 | |
1877 | |
1017 | MODULE = Coro::State PACKAGE = Coro::Cont |
1878 | int |
|
|
1879 | cctx_stacksize (int new_stacksize = 0) |
|
|
1880 | CODE: |
|
|
1881 | RETVAL = coro_stacksize; |
|
|
1882 | if (new_stacksize) |
|
|
1883 | coro_stacksize = new_stacksize; |
|
|
1884 | OUTPUT: |
|
|
1885 | RETVAL |
|
|
1886 | |
|
|
1887 | int |
|
|
1888 | cctx_count () |
|
|
1889 | CODE: |
|
|
1890 | RETVAL = cctx_count; |
|
|
1891 | OUTPUT: |
|
|
1892 | RETVAL |
|
|
1893 | |
|
|
1894 | int |
|
|
1895 | cctx_idle () |
|
|
1896 | CODE: |
|
|
1897 | RETVAL = cctx_idle; |
|
|
1898 | OUTPUT: |
|
|
1899 | RETVAL |
1018 | |
1900 | |
1019 | void |
1901 | void |
1020 | yield(...) |
1902 | list () |
1021 | PROTOTYPE: @ |
1903 | PPCODE: |
|
|
1904 | { |
|
|
1905 | struct coro *coro; |
|
|
1906 | for (coro = coro_first; coro; coro = coro->next) |
|
|
1907 | if (coro->hv) |
|
|
1908 | XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv))); |
|
|
1909 | } |
|
|
1910 | |
|
|
1911 | void |
|
|
1912 | call (Coro::State coro, SV *coderef) |
|
|
1913 | ALIAS: |
|
|
1914 | eval = 1 |
|
|
1915 | CODE: |
|
|
1916 | { |
|
|
1917 | if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot)) |
|
|
1918 | { |
|
|
1919 | struct coro temp; |
|
|
1920 | |
|
|
1921 | if (!(coro->flags & CF_RUNNING)) |
|
|
1922 | { |
|
|
1923 | PUTBACK; |
|
|
1924 | save_perl (aTHX_ &temp); |
|
|
1925 | load_perl (aTHX_ coro); |
|
|
1926 | } |
|
|
1927 | |
|
|
1928 | { |
|
|
1929 | dSP; |
|
|
1930 | ENTER; |
|
|
1931 | SAVETMPS; |
|
|
1932 | PUTBACK; |
|
|
1933 | PUSHSTACK; |
|
|
1934 | PUSHMARK (SP); |
|
|
1935 | |
|
|
1936 | if (ix) |
|
|
1937 | eval_sv (coderef, 0); |
|
|
1938 | else |
|
|
1939 | call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD); |
|
|
1940 | |
|
|
1941 | POPSTACK; |
|
|
1942 | SPAGAIN; |
|
|
1943 | FREETMPS; |
|
|
1944 | LEAVE; |
|
|
1945 | PUTBACK; |
|
|
1946 | } |
|
|
1947 | |
|
|
1948 | if (!(coro->flags & CF_RUNNING)) |
|
|
1949 | { |
|
|
1950 | save_perl (aTHX_ coro); |
|
|
1951 | load_perl (aTHX_ &temp); |
|
|
1952 | SPAGAIN; |
|
|
1953 | } |
|
|
1954 | } |
|
|
1955 | } |
|
|
1956 | |
|
|
1957 | SV * |
|
|
1958 | is_ready (Coro::State coro) |
|
|
1959 | PROTOTYPE: $ |
|
|
1960 | ALIAS: |
|
|
1961 | is_ready = CF_READY |
|
|
1962 | is_running = CF_RUNNING |
|
|
1963 | is_new = CF_NEW |
|
|
1964 | is_destroyed = CF_DESTROYED |
|
|
1965 | CODE: |
|
|
1966 | RETVAL = boolSV (coro->flags & ix); |
|
|
1967 | OUTPUT: |
|
|
1968 | RETVAL |
|
|
1969 | |
|
|
1970 | void |
|
|
1971 | api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB) |
|
|
1972 | |
|
|
1973 | SV * |
|
|
1974 | has_cctx (Coro::State coro) |
|
|
1975 | PROTOTYPE: $ |
|
|
1976 | CODE: |
|
|
1977 | RETVAL = boolSV (!!coro->cctx); |
|
|
1978 | OUTPUT: |
|
|
1979 | RETVAL |
|
|
1980 | |
|
|
1981 | int |
|
|
1982 | is_traced (Coro::State coro) |
|
|
1983 | PROTOTYPE: $ |
|
|
1984 | CODE: |
|
|
1985 | RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL; |
|
|
1986 | OUTPUT: |
|
|
1987 | RETVAL |
|
|
1988 | |
|
|
1989 | IV |
|
|
1990 | rss (Coro::State coro) |
|
|
1991 | PROTOTYPE: $ |
|
|
1992 | ALIAS: |
|
|
1993 | usecount = 1 |
1022 | CODE: |
1994 | CODE: |
1023 | SV *yieldstack; |
1995 | switch (ix) |
1024 | SV *sv; |
1996 | { |
1025 | AV *defav = GvAV (PL_defgv); |
1997 | case 0: RETVAL = coro_rss (aTHX_ coro); break; |
1026 | struct coro *prev, *next; |
1998 | case 1: RETVAL = coro->usecount; break; |
1027 | |
|
|
1028 | yieldstack = *hv_fetch ( |
|
|
1029 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1030 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1031 | 0 |
1999 | } |
1032 | ); |
2000 | OUTPUT: |
|
|
2001 | RETVAL |
1033 | |
2002 | |
1034 | /* set up @_ -- ugly */ |
2003 | void |
1035 | av_clear (defav); |
2004 | force_cctx () |
1036 | av_fill (defav, items - 1); |
2005 | CODE: |
1037 | while (items--) |
2006 | struct coro *coro = SvSTATE (coro_current); |
1038 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
2007 | coro->cctx->idle_sp = 0; |
1039 | |
2008 | |
1040 | sv = av_pop ((AV *)SvRV (yieldstack)); |
2009 | void |
1041 | prev = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 0, 0))); |
2010 | throw (Coro::State self, SV *throw = &PL_sv_undef) |
1042 | next = SvSTATE ((SV*)SvRV (*av_fetch ((AV *)SvRV (sv), 1, 0))); |
2011 | PROTOTYPE: $;$ |
|
|
2012 | CODE: |
1043 | SvREFCNT_dec (sv); |
2013 | SvREFCNT_dec (self->throw); |
|
|
2014 | self->throw = SvOK (throw) ? newSVsv (throw) : 0; |
1044 | |
2015 | |
1045 | coro_state_transfer (aTHX_ prev, next, 0); |
2016 | void |
|
|
2017 | swap_defsv (Coro::State self) |
|
|
2018 | PROTOTYPE: $ |
|
|
2019 | ALIAS: |
|
|
2020 | swap_defav = 1 |
|
|
2021 | CODE: |
|
|
2022 | if (!self->slot) |
|
|
2023 | croak ("cannot swap state with coroutine that has no saved state"); |
|
|
2024 | else |
|
|
2025 | { |
|
|
2026 | SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv); |
|
|
2027 | SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv; |
|
|
2028 | |
|
|
2029 | SV *tmp = *src; *src = *dst; *dst = tmp; |
|
|
2030 | } |
1046 | |
2031 | |
1047 | MODULE = Coro::State PACKAGE = Coro |
2032 | MODULE = Coro::State PACKAGE = Coro |
1048 | |
2033 | |
1049 | BOOT: |
2034 | BOOT: |
1050 | { |
2035 | { |
1051 | int i; |
2036 | int i; |
|
|
2037 | |
|
|
2038 | av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE); |
|
|
2039 | sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE); |
|
|
2040 | sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE); |
|
|
2041 | |
|
|
2042 | coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE); |
|
|
2043 | SvREADONLY_on (coro_current); |
|
|
2044 | |
1052 | HV *stash = gv_stashpv ("Coro", TRUE); |
2045 | coro_stash = gv_stashpv ("Coro", TRUE); |
1053 | |
2046 | |
1054 | newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
2047 | newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX)); |
1055 | newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
2048 | newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH)); |
1056 | newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
2049 | newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL)); |
1057 | newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
2050 | newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW)); |
1058 | newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
2051 | newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE)); |
1059 | newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
2052 | newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN)); |
1060 | |
|
|
1061 | coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV); |
|
|
1062 | coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV); |
|
|
1063 | |
2053 | |
1064 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
2054 | for (i = PRIO_MAX - PRIO_MIN + 1; i--; ) |
1065 | coro_ready[i] = newAV (); |
2055 | coro_ready[i] = newAV (); |
1066 | |
2056 | |
1067 | { |
2057 | { |
1068 | SV *sv = perl_get_sv("Coro::API", 1); |
2058 | SV *sv = perl_get_sv ("Coro::API", TRUE); |
|
|
2059 | perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */ |
1069 | |
2060 | |
1070 | coroapi.schedule = api_schedule; |
2061 | coroapi.schedule = api_schedule; |
1071 | coroapi.cede = api_cede; |
2062 | coroapi.cede = api_cede; |
|
|
2063 | coroapi.cede_notself = api_cede_notself; |
1072 | coroapi.ready = api_ready; |
2064 | coroapi.ready = api_ready; |
|
|
2065 | coroapi.is_ready = api_is_ready; |
1073 | coroapi.nready = &coro_nready; |
2066 | coroapi.nready = &coro_nready; |
1074 | coroapi.current = coro_current; |
2067 | coroapi.current = coro_current; |
1075 | |
2068 | |
1076 | GCoroAPI = &coroapi; |
2069 | GCoroAPI = &coroapi; |
1077 | sv_setiv (sv, (IV)&coroapi); |
2070 | sv_setiv (sv, (IV)&coroapi); |
1078 | SvREADONLY_on (sv); |
2071 | SvREADONLY_on (sv); |
1079 | } |
2072 | } |
1080 | } |
2073 | } |
1081 | |
2074 | |
1082 | #if !PERL_MICRO |
|
|
1083 | |
|
|
1084 | void |
2075 | void |
1085 | ready(self) |
2076 | _set_current (SV *current) |
1086 | SV * self |
|
|
1087 | PROTOTYPE: $ |
2077 | PROTOTYPE: $ |
1088 | CODE: |
2078 | CODE: |
1089 | api_ready (self); |
2079 | SvREFCNT_dec (SvRV (coro_current)); |
|
|
2080 | SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current))); |
1090 | |
2081 | |
1091 | #endif |
2082 | void |
|
|
2083 | _set_readyhook (SV *hook) |
|
|
2084 | PROTOTYPE: $ |
|
|
2085 | CODE: |
|
|
2086 | LOCK; |
|
|
2087 | SvREFCNT_dec (coro_readyhook); |
|
|
2088 | coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0; |
|
|
2089 | UNLOCK; |
1092 | |
2090 | |
1093 | int |
2091 | int |
|
|
2092 | prio (Coro::State coro, int newprio = 0) |
|
|
2093 | ALIAS: |
|
|
2094 | nice = 1 |
|
|
2095 | CODE: |
|
|
2096 | { |
|
|
2097 | RETVAL = coro->prio; |
|
|
2098 | |
|
|
2099 | if (items > 1) |
|
|
2100 | { |
|
|
2101 | if (ix) |
|
|
2102 | newprio = coro->prio - newprio; |
|
|
2103 | |
|
|
2104 | if (newprio < PRIO_MIN) newprio = PRIO_MIN; |
|
|
2105 | if (newprio > PRIO_MAX) newprio = PRIO_MAX; |
|
|
2106 | |
|
|
2107 | coro->prio = newprio; |
|
|
2108 | } |
|
|
2109 | } |
|
|
2110 | OUTPUT: |
|
|
2111 | RETVAL |
|
|
2112 | |
|
|
2113 | SV * |
|
|
2114 | ready (SV *self) |
|
|
2115 | PROTOTYPE: $ |
|
|
2116 | CODE: |
|
|
2117 | RETVAL = boolSV (api_ready (self)); |
|
|
2118 | OUTPUT: |
|
|
2119 | RETVAL |
|
|
2120 | |
|
|
2121 | int |
1094 | nready(...) |
2122 | nready (...) |
1095 | PROTOTYPE: |
2123 | PROTOTYPE: |
1096 | CODE: |
2124 | CODE: |
1097 | RETVAL = coro_nready; |
2125 | RETVAL = coro_nready; |
1098 | OUTPUT: |
2126 | OUTPUT: |
1099 | RETVAL |
2127 | RETVAL |
1100 | |
2128 | |
|
|
2129 | # for async_pool speedup |
1101 | void |
2130 | void |
1102 | schedule(...) |
2131 | _pool_1 (SV *cb) |
1103 | PROTOTYPE: |
|
|
1104 | CODE: |
2132 | CODE: |
1105 | api_schedule (); |
2133 | { |
|
|
2134 | struct coro *coro = SvSTATE (coro_current); |
|
|
2135 | HV *hv = (HV *)SvRV (coro_current); |
|
|
2136 | AV *defav = GvAV (PL_defgv); |
|
|
2137 | SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0); |
|
|
2138 | AV *invoke_av; |
|
|
2139 | int i, len; |
|
|
2140 | |
|
|
2141 | if (!invoke) |
|
|
2142 | { |
|
|
2143 | SV *old = PL_diehook; |
|
|
2144 | PL_diehook = 0; |
|
|
2145 | SvREFCNT_dec (old); |
|
|
2146 | croak ("\3async_pool terminate\2\n"); |
|
|
2147 | } |
|
|
2148 | |
|
|
2149 | SvREFCNT_dec (coro->saved_deffh); |
|
|
2150 | coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv); |
|
|
2151 | |
|
|
2152 | hv_store (hv, "desc", sizeof ("desc") - 1, |
|
|
2153 | newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0); |
|
|
2154 | |
|
|
2155 | invoke_av = (AV *)SvRV (invoke); |
|
|
2156 | len = av_len (invoke_av); |
|
|
2157 | |
|
|
2158 | sv_setsv (cb, AvARRAY (invoke_av)[0]); |
|
|
2159 | |
|
|
2160 | if (len > 0) |
|
|
2161 | { |
|
|
2162 | av_fill (defav, len - 1); |
|
|
2163 | for (i = 0; i < len; ++i) |
|
|
2164 | av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1])); |
|
|
2165 | } |
|
|
2166 | |
|
|
2167 | SvREFCNT_dec (invoke); |
|
|
2168 | } |
1106 | |
2169 | |
1107 | void |
2170 | void |
1108 | cede(...) |
2171 | _pool_2 (SV *cb) |
1109 | PROTOTYPE: |
|
|
1110 | CODE: |
2172 | CODE: |
1111 | api_cede (); |
2173 | { |
|
|
2174 | struct coro *coro = SvSTATE (coro_current); |
1112 | |
2175 | |
1113 | # and these are hacks |
2176 | sv_setsv (cb, &PL_sv_undef); |
|
|
2177 | |
|
|
2178 | SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh; |
|
|
2179 | coro->saved_deffh = 0; |
|
|
2180 | |
|
|
2181 | if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss) |
|
|
2182 | || av_len (av_async_pool) + 1 >= SvIV (sv_pool_size)) |
|
|
2183 | { |
|
|
2184 | SV *old = PL_diehook; |
|
|
2185 | PL_diehook = 0; |
|
|
2186 | SvREFCNT_dec (old); |
|
|
2187 | croak ("\3async_pool terminate\2\n"); |
|
|
2188 | } |
|
|
2189 | |
|
|
2190 | av_clear (GvAV (PL_defgv)); |
|
|
2191 | hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1, |
|
|
2192 | newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0); |
|
|
2193 | |
|
|
2194 | coro->prio = 0; |
|
|
2195 | |
|
|
2196 | if (coro->cctx && (coro->cctx->flags & CC_TRACE)) |
|
|
2197 | api_trace (coro_current, 0); |
|
|
2198 | |
|
|
2199 | av_push (av_async_pool, newSVsv (coro_current)); |
|
|
2200 | } |
|
|
2201 | |
|
|
2202 | #if 0 |
|
|
2203 | |
|
|
2204 | void |
|
|
2205 | _generator_call (...) |
|
|
2206 | PROTOTYPE: @ |
|
|
2207 | PPCODE: |
|
|
2208 | fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr); |
|
|
2209 | xxxx |
|
|
2210 | abort (); |
|
|
2211 | |
1114 | SV * |
2212 | SV * |
1115 | _aio_get_state () |
2213 | gensub (SV *sub, ...) |
1116 | CODE: |
2214 | PROTOTYPE: &;@ |
|
|
2215 | CODE: |
1117 | { |
2216 | { |
1118 | struct { |
2217 | struct coro *coro; |
1119 | int errorno; |
2218 | MAGIC *mg; |
1120 | int laststype; |
2219 | CV *xcv; |
1121 | int laststatval; |
2220 | CV *ncv = (CV *)newSV_type (SVt_PVCV); |
1122 | Stat_t statcache; |
2221 | int i; |
1123 | } data; |
|
|
1124 | |
2222 | |
1125 | data.errorno = errno; |
2223 | CvGV (ncv) = CvGV (cv); |
1126 | data.laststype = PL_laststype; |
2224 | CvFILE (ncv) = CvFILE (cv); |
1127 | data.laststatval = PL_laststatval; |
|
|
1128 | data.statcache = PL_statcache; |
|
|
1129 | |
2225 | |
1130 | RETVAL = newSVpvn ((char *)&data, sizeof data); |
2226 | Newz (0, coro, 1, struct coro); |
|
|
2227 | coro->args = newAV (); |
|
|
2228 | coro->flags = CF_NEW; |
|
|
2229 | |
|
|
2230 | av_extend (coro->args, items - 1); |
|
|
2231 | for (i = 1; i < items; i++) |
|
|
2232 | av_push (coro->args, newSVsv (ST (i))); |
|
|
2233 | |
|
|
2234 | CvISXSUB_on (ncv); |
|
|
2235 | CvXSUBANY (ncv).any_ptr = (void *)coro; |
|
|
2236 | |
|
|
2237 | xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV)); |
|
|
2238 | |
|
|
2239 | CvXSUB (ncv) = CvXSUB (xcv); |
|
|
2240 | CvANON_on (ncv); |
|
|
2241 | |
|
|
2242 | mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0); |
|
|
2243 | RETVAL = newRV_noinc ((SV *)ncv); |
1131 | } |
2244 | } |
1132 | OUTPUT: |
2245 | OUTPUT: |
1133 | RETVAL |
2246 | RETVAL |
1134 | |
2247 | |
|
|
2248 | #endif |
|
|
2249 | |
|
|
2250 | |
|
|
2251 | MODULE = Coro::State PACKAGE = Coro::AIO |
|
|
2252 | |
1135 | void |
2253 | void |
1136 | _aio_set_state (char *data_) |
2254 | _get_state (SV *self) |
|
|
2255 | PPCODE: |
|
|
2256 | { |
|
|
2257 | AV *defav = GvAV (PL_defgv); |
|
|
2258 | AV *av = newAV (); |
|
|
2259 | int i; |
|
|
2260 | SV *data_sv = newSV (sizeof (struct io_state)); |
|
|
2261 | struct io_state *data = (struct io_state *)SvPVX (data_sv); |
|
|
2262 | SvCUR_set (data_sv, sizeof (struct io_state)); |
|
|
2263 | SvPOK_only (data_sv); |
|
|
2264 | |
|
|
2265 | data->errorno = errno; |
|
|
2266 | data->laststype = PL_laststype; |
|
|
2267 | data->laststatval = PL_laststatval; |
|
|
2268 | data->statcache = PL_statcache; |
|
|
2269 | |
|
|
2270 | av_extend (av, AvFILLp (defav) + 1 + 1); |
|
|
2271 | |
|
|
2272 | for (i = 0; i <= AvFILLp (defav); ++i) |
|
|
2273 | av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i])); |
|
|
2274 | |
|
|
2275 | av_push (av, data_sv); |
|
|
2276 | |
|
|
2277 | XPUSHs (sv_2mortal (newRV_noinc ((SV *)av))); |
|
|
2278 | |
|
|
2279 | api_ready (self); |
|
|
2280 | } |
|
|
2281 | |
|
|
2282 | void |
|
|
2283 | _set_state (SV *state) |
1137 | PROTOTYPE: $ |
2284 | PROTOTYPE: $ |
|
|
2285 | PPCODE: |
|
|
2286 | { |
|
|
2287 | AV *av = (AV *)SvRV (state); |
|
|
2288 | struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]); |
|
|
2289 | int i; |
|
|
2290 | |
|
|
2291 | errno = data->errorno; |
|
|
2292 | PL_laststype = data->laststype; |
|
|
2293 | PL_laststatval = data->laststatval; |
|
|
2294 | PL_statcache = data->statcache; |
|
|
2295 | |
|
|
2296 | EXTEND (SP, AvFILLp (av)); |
|
|
2297 | for (i = 0; i < AvFILLp (av); ++i) |
|
|
2298 | PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i]))); |
|
|
2299 | } |
|
|
2300 | |
|
|
2301 | |
|
|
2302 | MODULE = Coro::State PACKAGE = Coro::AnyEvent |
|
|
2303 | |
|
|
2304 | BOOT: |
|
|
2305 | sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE); |
|
|
2306 | |
|
|
2307 | SV * |
|
|
2308 | _schedule (...) |
|
|
2309 | PROTOTYPE: @ |
1138 | CODE: |
2310 | CODE: |
1139 | { |
2311 | { |
1140 | struct { |
2312 | static int incede; |
1141 | int errorno; |
|
|
1142 | int laststype; |
|
|
1143 | int laststatval; |
|
|
1144 | Stat_t statcache; |
|
|
1145 | } *data = (void *)data_; |
|
|
1146 | |
2313 | |
1147 | errno = data->errorno; |
2314 | api_cede_notself (); |
1148 | PL_laststype = data->laststype; |
2315 | |
1149 | PL_laststatval = data->laststatval; |
2316 | ++incede; |
1150 | PL_statcache = data->statcache; |
2317 | while (coro_nready >= incede && api_cede ()) |
|
|
2318 | ; |
|
|
2319 | |
|
|
2320 | sv_setsv (sv_activity, &PL_sv_undef); |
|
|
2321 | if (coro_nready >= incede) |
|
|
2322 | { |
|
|
2323 | PUSHMARK (SP); |
|
|
2324 | PUTBACK; |
|
|
2325 | call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL); |
|
|
2326 | SPAGAIN; |
|
|
2327 | } |
|
|
2328 | |
|
|
2329 | --incede; |
1151 | } |
2330 | } |
|
|
2331 | |
|
|
2332 | |
|
|
2333 | MODULE = Coro::State PACKAGE = PerlIO::cede |
|
|
2334 | |
|
|
2335 | BOOT: |
|
|
2336 | PerlIO_define_layer (aTHX_ &PerlIO_cede); |