1 | #define PERL_NO_GET_CONTEXT |
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2 | |
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3 | #include "libcoro/coro.c" |
1 | #include "libcoro/coro.c" |
4 | |
2 | |
5 | #include "EXTERN.h" |
3 | #include "EXTERN.h" |
6 | #include "perl.h" |
4 | #include "perl.h" |
7 | #include "XSUB.h" |
5 | #include "XSUB.h" |
8 | |
6 | |
9 | #include "patchlevel.h" |
7 | #include "patchlevel.h" |
10 | |
8 | |
11 | #if PERL_VERSION < 6 |
9 | #define PERL_VERSION_ATLEAST(a,b,c) \ |
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10 | (PERL_REVISION > (a) \ |
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11 | || (PERL_REVISION == (a) \ |
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12 | && (PERL_VERSION > (b) \ |
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13 | || (PERL_VERSION == (b) && PERLSUBVERSION >= (c))))) |
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14 | |
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15 | #if !PERL_VERSION_ATLEAST (5,6,0) |
12 | # ifndef PL_ppaddr |
16 | # ifndef PL_ppaddr |
13 | # define PL_ppaddr ppaddr |
17 | # define PL_ppaddr ppaddr |
14 | # endif |
18 | # endif |
15 | # ifndef call_sv |
19 | # ifndef call_sv |
16 | # define call_sv perl_call_sv |
20 | # define call_sv perl_call_sv |
… | |
… | |
66 | #define dSTACKLEVEL int stacklevel |
70 | #define dSTACKLEVEL int stacklevel |
67 | #define STACKLEVEL ((void *)&stacklevel) |
71 | #define STACKLEVEL ((void *)&stacklevel) |
68 | |
72 | |
69 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
73 | #define IN_DESTRUCT (PL_main_cv == Nullcv) |
70 | |
74 | |
71 | #define labs(l) ((l) >= 0 ? (l) : -(l)) |
75 | #if __GNUC__ >= 3 |
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76 | # define attribute(x) __attribute__(x) |
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77 | #else |
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78 | # define attribute(x) |
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79 | #endif |
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80 | |
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81 | #define NOINLINE attribute ((noinline)) |
72 | |
82 | |
73 | #include "CoroAPI.h" |
83 | #include "CoroAPI.h" |
74 | |
84 | |
75 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
85 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
76 | |
86 | |
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95 | /* the stack */ |
105 | /* the stack */ |
96 | void *sptr; |
106 | void *sptr; |
97 | long ssize; /* positive == mmap, otherwise malloc */ |
107 | long ssize; /* positive == mmap, otherwise malloc */ |
98 | |
108 | |
99 | /* cpu state */ |
109 | /* cpu state */ |
100 | void *idle_sp; /* original stacklevel when coroutine was created */ |
110 | void *idle_sp; /* sp of top-level transfer/schedule/cede call */ |
101 | JMPENV *top_env; |
111 | JMPENV *top_env; |
102 | coro_context cctx; |
112 | coro_context cctx; |
103 | } coro_stack; |
113 | } coro_stack; |
104 | |
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105 | /* the (fake) coro_stack representing the main program */ |
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106 | static coro_stack *main_stack; |
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107 | |
114 | |
108 | /* this is a structure representing a perl-level coroutine */ |
115 | /* this is a structure representing a perl-level coroutine */ |
109 | struct coro { |
116 | struct coro { |
110 | /* the c coroutine allocated to this perl coroutine, if any */ |
117 | /* the c coroutine allocated to this perl coroutine, if any */ |
111 | coro_stack *stack; |
118 | coro_stack *stack; |
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159 | |
166 | |
160 | typedef struct coro *Coro__State; |
167 | typedef struct coro *Coro__State; |
161 | typedef struct coro *Coro__State_or_hashref; |
168 | typedef struct coro *Coro__State_or_hashref; |
162 | |
169 | |
163 | static AV * |
170 | static AV * |
164 | coro_clone_padlist (pTHX_ CV *cv) |
171 | coro_clone_padlist (CV *cv) |
165 | { |
172 | { |
166 | AV *padlist = CvPADLIST (cv); |
173 | AV *padlist = CvPADLIST (cv); |
167 | AV *newpadlist, *newpad; |
174 | AV *newpadlist, *newpad; |
168 | |
175 | |
169 | newpadlist = newAV (); |
176 | newpadlist = newAV (); |
170 | AvREAL_off (newpadlist); |
177 | AvREAL_off (newpadlist); |
171 | #if PERL_VERSION < 9 |
178 | #if PERL_VERSION_ATLEAST (5,9,0) |
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179 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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180 | #else |
172 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
181 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
173 | #else |
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174 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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175 | #endif |
182 | #endif |
176 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
183 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
177 | --AvFILLp (padlist); |
184 | --AvFILLp (padlist); |
178 | |
185 | |
179 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
186 | av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE))); |
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181 | |
188 | |
182 | return newpadlist; |
189 | return newpadlist; |
183 | } |
190 | } |
184 | |
191 | |
185 | static void |
192 | static void |
186 | free_padlist (pTHX_ AV *padlist) |
193 | free_padlist (AV *padlist) |
187 | { |
194 | { |
188 | /* may be during global destruction */ |
195 | /* may be during global destruction */ |
189 | if (SvREFCNT (padlist)) |
196 | if (SvREFCNT (padlist)) |
190 | { |
197 | { |
191 | I32 i = AvFILLp (padlist); |
198 | I32 i = AvFILLp (padlist); |
… | |
… | |
212 | AV *padlist; |
219 | AV *padlist; |
213 | AV *av = (AV *)mg->mg_obj; |
220 | AV *av = (AV *)mg->mg_obj; |
214 | |
221 | |
215 | /* casting is fun. */ |
222 | /* casting is fun. */ |
216 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
223 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
217 | free_padlist (aTHX_ padlist); |
224 | free_padlist (padlist); |
218 | |
225 | |
219 | SvREFCNT_dec (av); |
226 | SvREFCNT_dec (av); |
220 | |
227 | |
221 | return 0; |
228 | return 0; |
222 | } |
229 | } |
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225 | |
232 | |
226 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
233 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
227 | |
234 | |
228 | /* the next two functions merely cache the padlists */ |
235 | /* the next two functions merely cache the padlists */ |
229 | static void |
236 | static void |
230 | get_padlist (pTHX_ CV *cv) |
237 | get_padlist (CV *cv) |
231 | { |
238 | { |
232 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
239 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
233 | |
240 | |
234 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
241 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
235 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
242 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
236 | else |
243 | else |
237 | { |
244 | { |
238 | #if 0 |
245 | #if 0 |
239 | /* this should work - but it doesn't :( */ |
246 | /* this is probably cleaner, but also slower? */ |
240 | CV *cp = Perl_cv_clone (aTHX_ cv); |
247 | CV *cp = Perl_cv_clone (cv); |
241 | CvPADLIST (cv) = CvPADLIST (cp); |
248 | CvPADLIST (cv) = CvPADLIST (cp); |
242 | CvPADLIST (cp) = 0; |
249 | CvPADLIST (cp) = 0; |
243 | SvREFCNT_dec (cp); |
250 | SvREFCNT_dec (cp); |
244 | #else |
251 | #else |
245 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
252 | CvPADLIST (cv) = coro_clone_padlist (cv); |
246 | #endif |
253 | #endif |
247 | } |
254 | } |
248 | } |
255 | } |
249 | |
256 | |
250 | static void |
257 | static void |
251 | put_padlist (pTHX_ CV *cv) |
258 | put_padlist (CV *cv) |
252 | { |
259 | { |
253 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
260 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
254 | |
261 | |
255 | if (!mg) |
262 | if (!mg) |
256 | { |
263 | { |
… | |
… | |
264 | } |
271 | } |
265 | |
272 | |
266 | #define SB do { |
273 | #define SB do { |
267 | #define SE } while (0) |
274 | #define SE } while (0) |
268 | |
275 | |
269 | #define LOAD(state) load_state(aTHX_ (state)); |
276 | #define LOAD(state) load_state((state)); |
270 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
277 | #define SAVE(state,flags) save_state((state),(flags)); |
271 | |
278 | |
272 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
279 | #define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE |
273 | |
280 | |
274 | static void |
281 | static void |
275 | load_state(pTHX_ Coro__State c) |
282 | load_state(Coro__State c) |
276 | { |
283 | { |
277 | PL_dowarn = c->dowarn; |
284 | PL_dowarn = c->dowarn; |
278 | PL_in_eval = c->in_eval; |
285 | PL_in_eval = c->in_eval; |
279 | |
286 | |
280 | PL_curstackinfo = c->curstackinfo; |
287 | PL_curstackinfo = c->curstackinfo; |
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298 | PL_scopestack_ix = c->scopestack_ix; |
305 | PL_scopestack_ix = c->scopestack_ix; |
299 | PL_scopestack_max = c->scopestack_max; |
306 | PL_scopestack_max = c->scopestack_max; |
300 | PL_savestack = c->savestack; |
307 | PL_savestack = c->savestack; |
301 | PL_savestack_ix = c->savestack_ix; |
308 | PL_savestack_ix = c->savestack_ix; |
302 | PL_savestack_max = c->savestack_max; |
309 | PL_savestack_max = c->savestack_max; |
303 | #if PERL_VERSION < 9 |
310 | #if !PERL_VERSION_ATLEAST (5,9,0) |
304 | PL_retstack = c->retstack; |
311 | PL_retstack = c->retstack; |
305 | PL_retstack_ix = c->retstack_ix; |
312 | PL_retstack_ix = c->retstack_ix; |
306 | PL_retstack_max = c->retstack_max; |
313 | PL_retstack_max = c->retstack_max; |
307 | #endif |
314 | #endif |
308 | PL_curpm = c->curpm; |
315 | PL_curpm = c->curpm; |
… | |
… | |
321 | { |
328 | { |
322 | AV *padlist = (AV *)POPs; |
329 | AV *padlist = (AV *)POPs; |
323 | |
330 | |
324 | if (padlist) |
331 | if (padlist) |
325 | { |
332 | { |
326 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
333 | put_padlist (cv); /* mark this padlist as available */ |
327 | CvPADLIST(cv) = padlist; |
334 | CvPADLIST(cv) = padlist; |
328 | } |
335 | } |
329 | |
336 | |
330 | ++CvDEPTH(cv); |
337 | ++CvDEPTH(cv); |
331 | } |
338 | } |
… | |
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333 | PUTBACK; |
340 | PUTBACK; |
334 | } |
341 | } |
335 | } |
342 | } |
336 | |
343 | |
337 | static void |
344 | static void |
338 | save_state(pTHX_ Coro__State c, int flags) |
345 | save_state(Coro__State c, int flags) |
339 | { |
346 | { |
340 | { |
347 | { |
341 | dSP; |
348 | dSP; |
342 | I32 cxix = cxstack_ix; |
349 | I32 cxix = cxstack_ix; |
343 | PERL_CONTEXT *ccstk = cxstack; |
350 | PERL_CONTEXT *ccstk = cxstack; |
… | |
… | |
371 | } |
378 | } |
372 | |
379 | |
373 | PUSHs ((SV *)CvPADLIST(cv)); |
380 | PUSHs ((SV *)CvPADLIST(cv)); |
374 | PUSHs ((SV *)cv); |
381 | PUSHs ((SV *)cv); |
375 | |
382 | |
376 | get_padlist (aTHX_ cv); |
383 | get_padlist (cv); |
377 | } |
384 | } |
378 | } |
385 | } |
379 | #ifdef CXt_FORMAT |
386 | #ifdef CXt_FORMAT |
380 | else if (CxTYPE(cx) == CXt_FORMAT) |
387 | else if (CxTYPE(cx) == CXt_FORMAT) |
381 | { |
388 | { |
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425 | c->scopestack_ix = PL_scopestack_ix; |
432 | c->scopestack_ix = PL_scopestack_ix; |
426 | c->scopestack_max = PL_scopestack_max; |
433 | c->scopestack_max = PL_scopestack_max; |
427 | c->savestack = PL_savestack; |
434 | c->savestack = PL_savestack; |
428 | c->savestack_ix = PL_savestack_ix; |
435 | c->savestack_ix = PL_savestack_ix; |
429 | c->savestack_max = PL_savestack_max; |
436 | c->savestack_max = PL_savestack_max; |
430 | #if PERL_VERSION < 9 |
437 | #if !PERL_VERSION_ATLEAST (5,9,0) |
431 | c->retstack = PL_retstack; |
438 | c->retstack = PL_retstack; |
432 | c->retstack_ix = PL_retstack_ix; |
439 | c->retstack_ix = PL_retstack_ix; |
433 | c->retstack_max = PL_retstack_max; |
440 | c->retstack_max = PL_retstack_max; |
434 | #endif |
441 | #endif |
435 | c->curpm = PL_curpm; |
442 | c->curpm = PL_curpm; |
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441 | * of perl.c:init_stacks, except that it uses less memory |
448 | * of perl.c:init_stacks, except that it uses less memory |
442 | * on the (sometimes correct) assumption that coroutines do |
449 | * on the (sometimes correct) assumption that coroutines do |
443 | * not usually need a lot of stackspace. |
450 | * not usually need a lot of stackspace. |
444 | */ |
451 | */ |
445 | static void |
452 | static void |
446 | coro_init_stacks (pTHX) |
453 | coro_init_stacks () |
447 | { |
454 | { |
448 | LOCK; |
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449 | |
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450 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
455 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
451 | PL_curstackinfo->si_type = PERLSI_MAIN; |
456 | PL_curstackinfo->si_type = PERLSI_MAIN; |
452 | PL_curstack = PL_curstackinfo->si_stack; |
457 | PL_curstack = PL_curstackinfo->si_stack; |
453 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
458 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
454 | |
459 | |
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475 | |
480 | |
476 | New(54,PL_savestack,96,ANY); |
481 | New(54,PL_savestack,96,ANY); |
477 | PL_savestack_ix = 0; |
482 | PL_savestack_ix = 0; |
478 | PL_savestack_max = 96; |
483 | PL_savestack_max = 96; |
479 | |
484 | |
480 | #if PERL_VERSION < 9 |
485 | #if !PERL_VERSION_ATLEAST (5,9,0) |
481 | New(54,PL_retstack,8,OP*); |
486 | New(54,PL_retstack,8,OP*); |
482 | PL_retstack_ix = 0; |
487 | PL_retstack_ix = 0; |
483 | PL_retstack_max = 8; |
488 | PL_retstack_max = 8; |
484 | #endif |
489 | #endif |
485 | |
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486 | UNLOCK; |
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487 | } |
490 | } |
488 | |
491 | |
489 | /* |
492 | /* |
490 | * destroy the stacks, the callchain etc... |
493 | * destroy the stacks, the callchain etc... |
491 | */ |
494 | */ |
492 | static void |
495 | static void |
493 | destroy_stacks(pTHX) |
496 | destroy_stacks() |
494 | { |
497 | { |
495 | if (!IN_DESTRUCT) |
498 | if (!IN_DESTRUCT) |
496 | { |
499 | { |
497 | /* is this ugly, I ask? */ |
500 | /* is this ugly, I ask? */ |
498 | LEAVE_SCOPE (0); |
501 | LEAVE_SCOPE (0); |
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529 | |
532 | |
530 | Safefree (PL_tmps_stack); |
533 | Safefree (PL_tmps_stack); |
531 | Safefree (PL_markstack); |
534 | Safefree (PL_markstack); |
532 | Safefree (PL_scopestack); |
535 | Safefree (PL_scopestack); |
533 | Safefree (PL_savestack); |
536 | Safefree (PL_savestack); |
534 | #if PERL_VERSION < 9 |
537 | #if !PERL_VERSION_ATLEAST (5,9,0) |
535 | Safefree (PL_retstack); |
538 | Safefree (PL_retstack); |
536 | #endif |
539 | #endif |
537 | } |
540 | } |
538 | |
541 | |
539 | static void |
542 | static void |
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545 | dTHX; |
548 | dTHX; |
546 | dSP; |
549 | dSP; |
547 | UNOP myop; |
550 | UNOP myop; |
548 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
551 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
549 | |
552 | |
550 | coro_init_stacks (aTHX); |
553 | coro_init_stacks (); |
551 | /*PL_curcop = 0;*/ |
554 | /*PL_curcop = 0;*/ |
552 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
555 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
553 | SvREFCNT_dec (GvAV (PL_defgv)); |
556 | SvREFCNT_dec (GvAV (PL_defgv)); |
554 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
557 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
555 | |
558 | |
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578 | SvREFCNT_dec (coro_mortal); |
581 | SvREFCNT_dec (coro_mortal); |
579 | coro_mortal = 0; |
582 | coro_mortal = 0; |
580 | } |
583 | } |
581 | } |
584 | } |
582 | |
585 | |
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586 | static void NOINLINE |
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587 | prepare_cctx (coro_stack *cctx) |
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588 | { |
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589 | dSP; |
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590 | UNOP myop; |
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591 | |
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592 | Zero (&myop, 1, UNOP); |
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593 | myop.op_next = PL_op; |
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594 | myop.op_flags = OPf_WANT_VOID | OPf_STACKED; |
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595 | |
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596 | PUSHMARK(SP); |
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597 | EXTEND (SP, 2); |
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598 | PUSHs (newSViv (PTR2IV (cctx))); |
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599 | PUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE)); |
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600 | PUTBACK; |
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601 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
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602 | SPAGAIN; |
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603 | } |
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604 | |
583 | static void |
605 | static void |
584 | coro_run (void *arg) |
606 | coro_run (void *arg) |
585 | { |
607 | { |
586 | /* |
608 | /* |
587 | * this is a _very_ stripped down perl interpreter ;) |
609 | * this is a _very_ stripped down perl interpreter ;) |
588 | */ |
610 | */ |
589 | dTHX; |
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590 | |
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591 | UNLOCK; |
611 | UNLOCK; |
592 | |
612 | |
593 | PL_top_env = &PL_start_env; |
613 | PL_top_env = &PL_start_env; |
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614 | prepare_cctx ((coro_stack *)arg); |
594 | |
615 | |
595 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
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596 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
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597 | |
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598 | /* continue at cctx_init, without entersub */ |
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599 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
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600 | |
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601 | /* somebody will hit me for both perl_run and PL_restart_op */ |
616 | /* somebody will hit me for both perl_run and PL_restartop */ |
602 | perl_run (aTHX_ PERL_GET_CONTEXT); |
617 | perl_run (PERL_GET_CONTEXT); |
603 | |
618 | |
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619 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
604 | abort (); |
620 | abort (); |
605 | } |
621 | } |
606 | |
622 | |
607 | static coro_stack * |
623 | static coro_stack * |
608 | stack_new () |
624 | stack_new () |
… | |
… | |
611 | |
627 | |
612 | New (0, stack, 1, coro_stack); |
628 | New (0, stack, 1, coro_stack); |
613 | |
629 | |
614 | #if HAVE_MMAP |
630 | #if HAVE_MMAP |
615 | |
631 | |
616 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */ |
632 | stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; |
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633 | /* mmap suppsedly does allocate-on-write for us */ |
617 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
634 | stack->sptr = mmap (0, stack->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0); |
618 | |
635 | |
619 | if (stack->sptr == (void *)-1) |
636 | if (stack->sptr == (void *)-1) |
620 | { |
637 | { |
621 | perror ("FATAL: unable to mmap stack for coroutine"); |
638 | perror ("FATAL: unable to mmap stack for coroutine"); |
622 | _exit (EXIT_FAILURE); |
639 | _exit (EXIT_FAILURE); |
623 | } |
640 | } |
624 | |
641 | |
|
|
642 | # if STACKGUARD |
625 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
643 | mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE); |
|
|
644 | # endif |
626 | |
645 | |
627 | #else |
646 | #else |
628 | |
647 | |
629 | stack->ssize = STACKSIZE * (long)sizeof (long); |
648 | stack->ssize = STACKSIZE * (long)sizeof (long); |
630 | New (0, stack->sptr, STACKSIZE, long); |
649 | New (0, stack->sptr, STACKSIZE, long); |
… | |
… | |
643 | } |
662 | } |
644 | |
663 | |
645 | static void |
664 | static void |
646 | stack_free (coro_stack *stack) |
665 | stack_free (coro_stack *stack) |
647 | { |
666 | { |
648 | if (!stack || stack == main_stack) |
667 | if (!stack) |
649 | return; |
668 | return; |
650 | |
669 | |
651 | #if HAVE_MMAP |
670 | #if HAVE_MMAP |
652 | munmap (stack->sptr, stack->ssize); |
671 | munmap (stack->sptr, stack->ssize); |
653 | #else |
672 | #else |
… | |
… | |
684 | stack->next = stack_first; |
703 | stack->next = stack_first; |
685 | stack_first = stack; |
704 | stack_first = stack; |
686 | } |
705 | } |
687 | |
706 | |
688 | /* never call directly, always through the coro_state_transfer global variable */ |
707 | /* never call directly, always through the coro_state_transfer global variable */ |
689 | static void |
708 | static void NOINLINE |
690 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
709 | transfer (struct coro *prev, struct coro *next, int flags) |
691 | { |
710 | { |
692 | dSTACKLEVEL; |
711 | dSTACKLEVEL; |
693 | |
712 | |
694 | /* sometimes transfer is only called to set idle_sp */ |
713 | /* sometimes transfer is only called to set idle_sp */ |
695 | if (flags == TRANSFER_SET_STACKLEVEL) |
714 | if (flags == TRANSFER_SET_STACKLEVEL) |
… | |
… | |
715 | setup_coro (next); |
734 | setup_coro (next); |
716 | /* need a stack */ |
735 | /* need a stack */ |
717 | next->stack = 0; |
736 | next->stack = 0; |
718 | } |
737 | } |
719 | |
738 | |
|
|
739 | if (!prev->stack) |
|
|
740 | /* create a new empty context */ |
|
|
741 | Newz (0, prev->stack, 1, coro_stack); |
|
|
742 | |
720 | prev__stack = prev->stack; |
743 | prev__stack = prev->stack; |
721 | |
744 | |
722 | /* possibly "free" the stack */ |
745 | /* possibly "free" the stack */ |
723 | if (prev__stack->idle_sp == STACKLEVEL) |
746 | if (prev__stack->idle_sp == STACKLEVEL) |
724 | { |
747 | { |
… | |
… | |
740 | |
763 | |
741 | UNLOCK; |
764 | UNLOCK; |
742 | } |
765 | } |
743 | } |
766 | } |
744 | |
767 | |
745 | /* use this function pointer to call the above function */ |
|
|
746 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
747 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
748 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
749 | |
|
|
750 | struct transfer_args |
768 | struct transfer_args |
751 | { |
769 | { |
752 | struct coro *prev, *next; |
770 | struct coro *prev, *next; |
753 | int flags; |
771 | int flags; |
754 | }; |
772 | }; |
755 | |
773 | |
756 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
774 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
757 | |
775 | |
758 | static void |
776 | static void |
759 | coro_state_destroy (struct coro *coro) |
777 | coro_state_destroy (struct coro *coro) |
760 | { |
778 | { |
761 | if (coro->refcnt--) |
779 | if (coro->refcnt--) |
… | |
… | |
763 | |
781 | |
764 | if (coro->mainstack && coro->mainstack != main_mainstack) |
782 | if (coro->mainstack && coro->mainstack != main_mainstack) |
765 | { |
783 | { |
766 | struct coro temp; |
784 | struct coro temp; |
767 | |
785 | |
768 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
786 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
769 | LOAD (aTHX_ coro); |
787 | LOAD (coro); |
770 | |
788 | |
771 | destroy_stacks (aTHX); |
789 | destroy_stacks (); |
772 | |
790 | |
773 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
791 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
774 | |
792 | |
775 | coro->mainstack = 0; |
793 | coro->mainstack = 0; |
776 | } |
794 | } |
… | |
… | |
779 | SvREFCNT_dec (coro->args); |
797 | SvREFCNT_dec (coro->args); |
780 | Safefree (coro); |
798 | Safefree (coro); |
781 | } |
799 | } |
782 | |
800 | |
783 | static int |
801 | static int |
784 | coro_state_clear (SV *sv, MAGIC *mg) |
802 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
785 | { |
803 | { |
786 | struct coro *coro = (struct coro *)mg->mg_ptr; |
804 | struct coro *coro = (struct coro *)mg->mg_ptr; |
787 | mg->mg_ptr = 0; |
805 | mg->mg_ptr = 0; |
788 | |
806 | |
789 | coro_state_destroy (coro); |
807 | coro_state_destroy (coro); |
790 | |
808 | |
791 | return 0; |
809 | return 0; |
792 | } |
810 | } |
793 | |
811 | |
794 | static int |
812 | static int |
795 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
813 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
796 | { |
814 | { |
797 | struct coro *coro = (struct coro *)mg->mg_ptr; |
815 | struct coro *coro = (struct coro *)mg->mg_ptr; |
798 | |
816 | |
799 | ++coro->refcnt; |
817 | ++coro->refcnt; |
800 | |
818 | |
801 | return 0; |
819 | return 0; |
802 | } |
820 | } |
803 | |
821 | |
804 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
822 | static MGVTBL coro_state_vtbl = { |
|
|
823 | 0, 0, 0, 0, |
|
|
824 | coro_state_clear, |
|
|
825 | 0, |
|
|
826 | #ifdef MGf_DUP |
|
|
827 | coro_state_dup, |
|
|
828 | #endif |
|
|
829 | }; |
805 | |
830 | |
806 | static struct coro * |
831 | static struct coro * |
807 | SvSTATE (SV *coro) |
832 | SvSTATE (SV *coro) |
808 | { |
833 | { |
809 | HV *stash; |
834 | HV *stash; |
… | |
… | |
824 | assert (mg->mg_type == PERL_MAGIC_ext); |
849 | assert (mg->mg_type == PERL_MAGIC_ext); |
825 | return (struct coro *)mg->mg_ptr; |
850 | return (struct coro *)mg->mg_ptr; |
826 | } |
851 | } |
827 | |
852 | |
828 | static void |
853 | static void |
829 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
854 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
830 | { |
855 | { |
831 | ta->prev = SvSTATE (prev); |
856 | ta->prev = SvSTATE (prev); |
832 | ta->next = SvSTATE (next); |
857 | ta->next = SvSTATE (next); |
833 | ta->flags = flags; |
858 | ta->flags = flags; |
834 | } |
859 | } |
… | |
… | |
837 | api_transfer (SV *prev, SV *next, int flags) |
862 | api_transfer (SV *prev, SV *next, int flags) |
838 | { |
863 | { |
839 | dTHX; |
864 | dTHX; |
840 | struct transfer_args ta; |
865 | struct transfer_args ta; |
841 | |
866 | |
842 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
867 | prepare_transfer (&ta, prev, next, flags); |
843 | TRANSFER (ta); |
868 | TRANSFER (ta); |
844 | } |
869 | } |
845 | |
870 | |
846 | /** Coro ********************************************************************/ |
871 | /** Coro ********************************************************************/ |
847 | |
872 | |
… | |
… | |
856 | static GV *coro_current, *coro_idle; |
881 | static GV *coro_current, *coro_idle; |
857 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
882 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
858 | static int coro_nready; |
883 | static int coro_nready; |
859 | |
884 | |
860 | static void |
885 | static void |
861 | coro_enq (pTHX_ SV *sv) |
886 | coro_enq (SV *sv) |
862 | { |
887 | { |
863 | int prio; |
888 | int prio; |
864 | |
889 | |
865 | if (SvTYPE (sv) != SVt_PVHV) |
890 | if (SvTYPE (sv) != SVt_PVHV) |
866 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
891 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
… | |
… | |
870 | av_push (coro_ready [prio - PRIO_MIN], sv); |
895 | av_push (coro_ready [prio - PRIO_MIN], sv); |
871 | coro_nready++; |
896 | coro_nready++; |
872 | } |
897 | } |
873 | |
898 | |
874 | static SV * |
899 | static SV * |
875 | coro_deq (pTHX_ int min_prio) |
900 | coro_deq (int min_prio) |
876 | { |
901 | { |
877 | int prio = PRIO_MAX - PRIO_MIN; |
902 | int prio = PRIO_MAX - PRIO_MIN; |
878 | |
903 | |
879 | min_prio -= PRIO_MIN; |
904 | min_prio -= PRIO_MIN; |
880 | if (min_prio < 0) |
905 | if (min_prio < 0) |
… | |
… | |
897 | |
922 | |
898 | if (SvROK (coro)) |
923 | if (SvROK (coro)) |
899 | coro = SvRV (coro); |
924 | coro = SvRV (coro); |
900 | |
925 | |
901 | LOCK; |
926 | LOCK; |
902 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
927 | coro_enq (SvREFCNT_inc (coro)); |
903 | UNLOCK; |
928 | UNLOCK; |
904 | } |
929 | } |
905 | |
930 | |
906 | static void |
931 | static void |
907 | prepare_schedule (aTHX_ struct transfer_args *ta) |
932 | prepare_schedule (struct transfer_args *ta) |
908 | { |
933 | { |
909 | SV *current, *prev, *next; |
934 | SV *current, *prev, *next; |
910 | |
|
|
911 | LOCK; |
|
|
912 | |
935 | |
913 | current = GvSV (coro_current); |
936 | current = GvSV (coro_current); |
914 | |
937 | |
915 | for (;;) |
938 | for (;;) |
916 | { |
939 | { |
917 | LOCK; |
940 | LOCK; |
918 | |
|
|
919 | next = coro_deq (aTHX_ PRIO_MIN); |
941 | next = coro_deq (PRIO_MIN); |
|
|
942 | UNLOCK; |
920 | |
943 | |
921 | if (next) |
944 | if (next) |
922 | break; |
945 | break; |
923 | |
|
|
924 | UNLOCK; |
|
|
925 | |
946 | |
926 | { |
947 | { |
927 | dSP; |
948 | dSP; |
928 | |
949 | |
929 | ENTER; |
950 | ENTER; |
… | |
… | |
940 | |
961 | |
941 | prev = SvRV (current); |
962 | prev = SvRV (current); |
942 | SvRV (current) = next; |
963 | SvRV (current) = next; |
943 | |
964 | |
944 | /* free this only after the transfer */ |
965 | /* free this only after the transfer */ |
|
|
966 | LOCK; |
945 | free_coro_mortal (); |
967 | free_coro_mortal (); |
|
|
968 | UNLOCK; |
946 | coro_mortal = prev; |
969 | coro_mortal = prev; |
947 | |
970 | |
948 | ta->prev = SvSTATE (prev); |
971 | ta->prev = SvSTATE (prev); |
949 | ta->next = SvSTATE (next); |
972 | ta->next = SvSTATE (next); |
950 | ta->flags = TRANSFER_SAVE_ALL; |
973 | ta->flags = TRANSFER_SAVE_ALL; |
951 | |
|
|
952 | UNLOCK; |
|
|
953 | } |
974 | } |
954 | |
975 | |
955 | static void |
976 | static void |
956 | prepare_cede (aTHX_ struct transfer_args *ta) |
977 | prepare_cede (struct transfer_args *ta) |
957 | { |
978 | { |
958 | LOCK; |
979 | LOCK; |
959 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
980 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
960 | UNLOCK; |
981 | UNLOCK; |
961 | |
982 | |
962 | prepare_schedule (ta); |
983 | prepare_schedule (ta); |
963 | } |
984 | } |
964 | |
985 | |
… | |
… | |
1002 | main_mainstack = PL_mainstack; |
1023 | main_mainstack = PL_mainstack; |
1003 | |
1024 | |
1004 | coroapi.ver = CORO_API_VERSION; |
1025 | coroapi.ver = CORO_API_VERSION; |
1005 | coroapi.transfer = api_transfer; |
1026 | coroapi.transfer = api_transfer; |
1006 | |
1027 | |
1007 | Newz (0, main_stack, 1, coro_stack); |
|
|
1008 | main_stack->idle_sp = (void *)-1; |
|
|
1009 | |
|
|
1010 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1028 | assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL)); |
1011 | } |
1029 | } |
1012 | |
1030 | |
1013 | SV * |
1031 | SV * |
1014 | new (char *klass, ...) |
1032 | new (char *klass, ...) |
… | |
… | |
1026 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1044 | RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1)); |
1027 | |
1045 | |
1028 | for (i = 1; i < items; i++) |
1046 | for (i = 1; i < items; i++) |
1029 | av_push (coro->args, newSVsv (ST (i))); |
1047 | av_push (coro->args, newSVsv (ST (i))); |
1030 | |
1048 | |
1031 | coro->stack = main_stack; |
|
|
1032 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
1049 | /*coro->mainstack = 0; *//*actual work is done inside transfer */ |
1033 | /*coro->stack = 0;*/ |
1050 | /*coro->stack = 0;*/ |
1034 | } |
1051 | } |
1035 | OUTPUT: |
1052 | OUTPUT: |
1036 | RETVAL |
1053 | RETVAL |
1037 | |
1054 | |
1038 | void |
1055 | void |
1039 | transfer (...) |
1056 | _set_stacklevel (...) |
1040 | ALIAS: |
1057 | ALIAS: |
1041 | Coro::schedule = 1 |
1058 | Coro::State::transfer = 1 |
1042 | Coro::cede = 2 |
1059 | Coro::schedule = 2 |
1043 | _set_stacklevel = 3 |
1060 | Coro::cede = 3 |
|
|
1061 | Coro::Cont::yield = 4 |
1044 | CODE: |
1062 | CODE: |
1045 | { |
1063 | { |
1046 | struct transfer_args ta; |
1064 | struct transfer_args ta; |
1047 | |
1065 | |
1048 | switch (ix) |
1066 | switch (ix) |
1049 | { |
1067 | { |
1050 | case 0: |
1068 | case 0: |
1051 | if (items != 3) |
|
|
1052 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1053 | |
|
|
1054 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1055 | break; |
|
|
1056 | |
|
|
1057 | case 1: |
|
|
1058 | prepare_schedule (&ta); |
|
|
1059 | break; |
|
|
1060 | |
|
|
1061 | case 2: |
|
|
1062 | prepare_cede (&ta); |
|
|
1063 | break; |
|
|
1064 | |
|
|
1065 | case 3: |
|
|
1066 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
1069 | ta.prev = (struct coro *)INT2PTR (coro_stack *, SvIV (ST (0))); |
1067 | ta.next = 0; |
1070 | ta.next = 0; |
1068 | ta.flags = TRANSFER_SET_STACKLEVEL; |
1071 | ta.flags = TRANSFER_SET_STACKLEVEL; |
1069 | break; |
1072 | break; |
|
|
1073 | |
|
|
1074 | case 1: |
|
|
1075 | if (items != 3) |
|
|
1076 | croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items); |
|
|
1077 | |
|
|
1078 | prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2))); |
|
|
1079 | break; |
|
|
1080 | |
|
|
1081 | case 2: |
|
|
1082 | prepare_schedule (&ta); |
|
|
1083 | break; |
|
|
1084 | |
|
|
1085 | case 3: |
|
|
1086 | prepare_cede (&ta); |
|
|
1087 | break; |
|
|
1088 | |
|
|
1089 | case 4: |
|
|
1090 | { |
|
|
1091 | SV *yieldstack; |
|
|
1092 | SV *sv; |
|
|
1093 | AV *defav = GvAV (PL_defgv); |
|
|
1094 | |
|
|
1095 | yieldstack = *hv_fetch ( |
|
|
1096 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1097 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1098 | 0 |
|
|
1099 | ); |
|
|
1100 | |
|
|
1101 | /* set up @_ -- ugly */ |
|
|
1102 | av_clear (defav); |
|
|
1103 | av_fill (defav, items - 1); |
|
|
1104 | while (items--) |
|
|
1105 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1106 | |
|
|
1107 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1108 | ta.prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1109 | ta.next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1110 | ta.flags = 0; |
|
|
1111 | SvREFCNT_dec (sv); |
|
|
1112 | } |
|
|
1113 | break; |
|
|
1114 | |
1070 | } |
1115 | } |
1071 | |
1116 | |
1072 | TRANSFER (ta); |
1117 | TRANSFER (ta); |
1073 | } |
1118 | } |
1074 | |
1119 | |
… | |
… | |
1081 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
1126 | sv_unmagic (SvRV (dst), PERL_MAGIC_ext); |
1082 | |
1127 | |
1083 | ++coro_src->refcnt; |
1128 | ++coro_src->refcnt; |
1084 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
1129 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
1085 | } |
1130 | } |
1086 | |
|
|
1087 | void |
|
|
1088 | _nonlocal_goto (IV nextop) |
|
|
1089 | CODE: |
|
|
1090 | /* uuh, somebody will kill me again for this */ |
|
|
1091 | PL_op->op_next = INT2PTR (OP *, nextop); |
|
|
1092 | |
1131 | |
1093 | void |
1132 | void |
1094 | _exit (code) |
1133 | _exit (code) |
1095 | int code |
1134 | int code |
1096 | PROTOTYPE: $ |
1135 | PROTOTYPE: $ |
1097 | CODE: |
1136 | CODE: |
1098 | _exit (code); |
1137 | _exit (code); |
1099 | |
|
|
1100 | MODULE = Coro::State PACKAGE = Coro::Cont |
|
|
1101 | |
|
|
1102 | void |
|
|
1103 | yield (...) |
|
|
1104 | PROTOTYPE: @ |
|
|
1105 | CODE: |
|
|
1106 | { |
|
|
1107 | SV *yieldstack; |
|
|
1108 | SV *sv; |
|
|
1109 | AV *defav = GvAV (PL_defgv); |
|
|
1110 | struct coro *prev, *next; |
|
|
1111 | |
|
|
1112 | yieldstack = *hv_fetch ( |
|
|
1113 | (HV *)SvRV (GvSV (coro_current)), |
|
|
1114 | "yieldstack", sizeof ("yieldstack") - 1, |
|
|
1115 | 0 |
|
|
1116 | ); |
|
|
1117 | |
|
|
1118 | /* set up @_ -- ugly */ |
|
|
1119 | av_clear (defav); |
|
|
1120 | av_fill (defav, items - 1); |
|
|
1121 | while (items--) |
|
|
1122 | av_store (defav, items, SvREFCNT_inc (ST(items))); |
|
|
1123 | |
|
|
1124 | sv = av_pop ((AV *)SvRV (yieldstack)); |
|
|
1125 | prev = SvSTATE (*av_fetch ((AV *)SvRV (sv), 0, 0)); |
|
|
1126 | next = SvSTATE (*av_fetch ((AV *)SvRV (sv), 1, 0)); |
|
|
1127 | SvREFCNT_dec (sv); |
|
|
1128 | |
|
|
1129 | coro_state_transfer (aTHX_ prev, next, 0); |
|
|
1130 | } |
|
|
1131 | |
1138 | |
1132 | MODULE = Coro::State PACKAGE = Coro |
1139 | MODULE = Coro::State PACKAGE = Coro |
1133 | |
1140 | |
1134 | BOOT: |
1141 | BOOT: |
1135 | { |
1142 | { |