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 |
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65 | * and should be unique. */ |
69 | * and should be unique. */ |
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) |
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74 | |
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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)) |
70 | |
82 | |
71 | #include "CoroAPI.h" |
83 | #include "CoroAPI.h" |
72 | |
84 | |
73 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
85 | #define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */ |
74 | |
86 | |
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154 | |
166 | |
155 | typedef struct coro *Coro__State; |
167 | typedef struct coro *Coro__State; |
156 | typedef struct coro *Coro__State_or_hashref; |
168 | typedef struct coro *Coro__State_or_hashref; |
157 | |
169 | |
158 | static AV * |
170 | static AV * |
159 | coro_clone_padlist (pTHX_ CV *cv) |
171 | coro_clone_padlist (CV *cv) |
160 | { |
172 | { |
161 | AV *padlist = CvPADLIST (cv); |
173 | AV *padlist = CvPADLIST (cv); |
162 | AV *newpadlist, *newpad; |
174 | AV *newpadlist, *newpad; |
163 | |
175 | |
164 | newpadlist = newAV (); |
176 | newpadlist = newAV (); |
165 | AvREAL_off (newpadlist); |
177 | AvREAL_off (newpadlist); |
166 | #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 |
167 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
181 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1); |
168 | #else |
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169 | Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1); |
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170 | #endif |
182 | #endif |
171 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
183 | newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)]; |
172 | --AvFILLp (padlist); |
184 | --AvFILLp (padlist); |
173 | |
185 | |
174 | 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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176 | |
188 | |
177 | return newpadlist; |
189 | return newpadlist; |
178 | } |
190 | } |
179 | |
191 | |
180 | static void |
192 | static void |
181 | free_padlist (pTHX_ AV *padlist) |
193 | free_padlist (AV *padlist) |
182 | { |
194 | { |
183 | /* may be during global destruction */ |
195 | /* may be during global destruction */ |
184 | if (SvREFCNT (padlist)) |
196 | if (SvREFCNT (padlist)) |
185 | { |
197 | { |
186 | I32 i = AvFILLp (padlist); |
198 | I32 i = AvFILLp (padlist); |
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207 | AV *padlist; |
219 | AV *padlist; |
208 | AV *av = (AV *)mg->mg_obj; |
220 | AV *av = (AV *)mg->mg_obj; |
209 | |
221 | |
210 | /* casting is fun. */ |
222 | /* casting is fun. */ |
211 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
223 | while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av))) |
212 | free_padlist (aTHX_ padlist); |
224 | free_padlist (padlist); |
213 | |
225 | |
214 | SvREFCNT_dec (av); |
226 | SvREFCNT_dec (av); |
215 | |
227 | |
216 | return 0; |
228 | return 0; |
217 | } |
229 | } |
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220 | |
232 | |
221 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
233 | static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free}; |
222 | |
234 | |
223 | /* the next two functions merely cache the padlists */ |
235 | /* the next two functions merely cache the padlists */ |
224 | static void |
236 | static void |
225 | get_padlist (pTHX_ CV *cv) |
237 | get_padlist (CV *cv) |
226 | { |
238 | { |
227 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
239 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
228 | |
240 | |
229 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
241 | if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0) |
230 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
242 | CvPADLIST (cv) = (AV *)av_pop ((AV *)mg->mg_obj); |
231 | else |
243 | else |
232 | { |
244 | { |
233 | #if 0 |
245 | #if 0 |
234 | /* this is probably cleaner, but also slower? */ |
246 | /* this is probably cleaner, but also slower? */ |
235 | CV *cp = Perl_cv_clone (aTHX_ cv); |
247 | CV *cp = Perl_cv_clone (cv); |
236 | CvPADLIST (cv) = CvPADLIST (cp); |
248 | CvPADLIST (cv) = CvPADLIST (cp); |
237 | CvPADLIST (cp) = 0; |
249 | CvPADLIST (cp) = 0; |
238 | SvREFCNT_dec (cp); |
250 | SvREFCNT_dec (cp); |
239 | #else |
251 | #else |
240 | CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv); |
252 | CvPADLIST (cv) = coro_clone_padlist (cv); |
241 | #endif |
253 | #endif |
242 | } |
254 | } |
243 | } |
255 | } |
244 | |
256 | |
245 | static void |
257 | static void |
246 | put_padlist (pTHX_ CV *cv) |
258 | put_padlist (CV *cv) |
247 | { |
259 | { |
248 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
260 | MAGIC *mg = mg_find ((SV *)cv, PERL_MAGIC_coro); |
249 | |
261 | |
250 | if (!mg) |
262 | if (!mg) |
251 | { |
263 | { |
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259 | } |
271 | } |
260 | |
272 | |
261 | #define SB do { |
273 | #define SB do { |
262 | #define SE } while (0) |
274 | #define SE } while (0) |
263 | |
275 | |
264 | #define LOAD(state) load_state(aTHX_ (state)); |
276 | #define LOAD(state) load_state((state)); |
265 | #define SAVE(state,flags) save_state(aTHX_ (state),(flags)); |
277 | #define SAVE(state,flags) save_state((state),(flags)); |
266 | |
278 | |
267 | #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 |
268 | |
280 | |
269 | static void |
281 | static void |
270 | load_state(pTHX_ Coro__State c) |
282 | load_state(Coro__State c) |
271 | { |
283 | { |
272 | PL_dowarn = c->dowarn; |
284 | PL_dowarn = c->dowarn; |
273 | PL_in_eval = c->in_eval; |
285 | PL_in_eval = c->in_eval; |
274 | |
286 | |
275 | PL_curstackinfo = c->curstackinfo; |
287 | PL_curstackinfo = c->curstackinfo; |
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293 | PL_scopestack_ix = c->scopestack_ix; |
305 | PL_scopestack_ix = c->scopestack_ix; |
294 | PL_scopestack_max = c->scopestack_max; |
306 | PL_scopestack_max = c->scopestack_max; |
295 | PL_savestack = c->savestack; |
307 | PL_savestack = c->savestack; |
296 | PL_savestack_ix = c->savestack_ix; |
308 | PL_savestack_ix = c->savestack_ix; |
297 | PL_savestack_max = c->savestack_max; |
309 | PL_savestack_max = c->savestack_max; |
298 | #if PERL_VERSION < 9 |
310 | #if !PERL_VERSION_ATLEAST (5,9,0) |
299 | PL_retstack = c->retstack; |
311 | PL_retstack = c->retstack; |
300 | PL_retstack_ix = c->retstack_ix; |
312 | PL_retstack_ix = c->retstack_ix; |
301 | PL_retstack_max = c->retstack_max; |
313 | PL_retstack_max = c->retstack_max; |
302 | #endif |
314 | #endif |
303 | PL_curpm = c->curpm; |
315 | PL_curpm = c->curpm; |
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316 | { |
328 | { |
317 | AV *padlist = (AV *)POPs; |
329 | AV *padlist = (AV *)POPs; |
318 | |
330 | |
319 | if (padlist) |
331 | if (padlist) |
320 | { |
332 | { |
321 | put_padlist (aTHX_ cv); /* mark this padlist as available */ |
333 | put_padlist (cv); /* mark this padlist as available */ |
322 | CvPADLIST(cv) = padlist; |
334 | CvPADLIST(cv) = padlist; |
323 | } |
335 | } |
324 | |
336 | |
325 | ++CvDEPTH(cv); |
337 | ++CvDEPTH(cv); |
326 | } |
338 | } |
… | |
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328 | PUTBACK; |
340 | PUTBACK; |
329 | } |
341 | } |
330 | } |
342 | } |
331 | |
343 | |
332 | static void |
344 | static void |
333 | save_state(pTHX_ Coro__State c, int flags) |
345 | save_state(Coro__State c, int flags) |
334 | { |
346 | { |
335 | { |
347 | { |
336 | dSP; |
348 | dSP; |
337 | I32 cxix = cxstack_ix; |
349 | I32 cxix = cxstack_ix; |
338 | PERL_CONTEXT *ccstk = cxstack; |
350 | PERL_CONTEXT *ccstk = cxstack; |
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366 | } |
378 | } |
367 | |
379 | |
368 | PUSHs ((SV *)CvPADLIST(cv)); |
380 | PUSHs ((SV *)CvPADLIST(cv)); |
369 | PUSHs ((SV *)cv); |
381 | PUSHs ((SV *)cv); |
370 | |
382 | |
371 | get_padlist (aTHX_ cv); |
383 | get_padlist (cv); |
372 | } |
384 | } |
373 | } |
385 | } |
374 | #ifdef CXt_FORMAT |
386 | #ifdef CXt_FORMAT |
375 | else if (CxTYPE(cx) == CXt_FORMAT) |
387 | else if (CxTYPE(cx) == CXt_FORMAT) |
376 | { |
388 | { |
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420 | c->scopestack_ix = PL_scopestack_ix; |
432 | c->scopestack_ix = PL_scopestack_ix; |
421 | c->scopestack_max = PL_scopestack_max; |
433 | c->scopestack_max = PL_scopestack_max; |
422 | c->savestack = PL_savestack; |
434 | c->savestack = PL_savestack; |
423 | c->savestack_ix = PL_savestack_ix; |
435 | c->savestack_ix = PL_savestack_ix; |
424 | c->savestack_max = PL_savestack_max; |
436 | c->savestack_max = PL_savestack_max; |
425 | #if PERL_VERSION < 9 |
437 | #if !PERL_VERSION_ATLEAST (5,9,0) |
426 | c->retstack = PL_retstack; |
438 | c->retstack = PL_retstack; |
427 | c->retstack_ix = PL_retstack_ix; |
439 | c->retstack_ix = PL_retstack_ix; |
428 | c->retstack_max = PL_retstack_max; |
440 | c->retstack_max = PL_retstack_max; |
429 | #endif |
441 | #endif |
430 | c->curpm = PL_curpm; |
442 | c->curpm = PL_curpm; |
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436 | * of perl.c:init_stacks, except that it uses less memory |
448 | * of perl.c:init_stacks, except that it uses less memory |
437 | * on the (sometimes correct) assumption that coroutines do |
449 | * on the (sometimes correct) assumption that coroutines do |
438 | * not usually need a lot of stackspace. |
450 | * not usually need a lot of stackspace. |
439 | */ |
451 | */ |
440 | static void |
452 | static void |
441 | coro_init_stacks (pTHX) |
453 | coro_init_stacks () |
442 | { |
454 | { |
443 | LOCK; |
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444 | |
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445 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
455 | PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1); |
446 | PL_curstackinfo->si_type = PERLSI_MAIN; |
456 | PL_curstackinfo->si_type = PERLSI_MAIN; |
447 | PL_curstack = PL_curstackinfo->si_stack; |
457 | PL_curstack = PL_curstackinfo->si_stack; |
448 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
458 | PL_mainstack = PL_curstack; /* remember in case we switch stacks */ |
449 | |
459 | |
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470 | |
480 | |
471 | New(54,PL_savestack,96,ANY); |
481 | New(54,PL_savestack,96,ANY); |
472 | PL_savestack_ix = 0; |
482 | PL_savestack_ix = 0; |
473 | PL_savestack_max = 96; |
483 | PL_savestack_max = 96; |
474 | |
484 | |
475 | #if PERL_VERSION < 9 |
485 | #if !PERL_VERSION_ATLEAST (5,9,0) |
476 | New(54,PL_retstack,8,OP*); |
486 | New(54,PL_retstack,8,OP*); |
477 | PL_retstack_ix = 0; |
487 | PL_retstack_ix = 0; |
478 | PL_retstack_max = 8; |
488 | PL_retstack_max = 8; |
479 | #endif |
489 | #endif |
480 | |
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481 | UNLOCK; |
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482 | } |
490 | } |
483 | |
491 | |
484 | /* |
492 | /* |
485 | * destroy the stacks, the callchain etc... |
493 | * destroy the stacks, the callchain etc... |
486 | */ |
494 | */ |
487 | static void |
495 | static void |
488 | destroy_stacks(pTHX) |
496 | coro_destroy_stacks() |
489 | { |
497 | { |
490 | if (!IN_DESTRUCT) |
498 | if (!IN_DESTRUCT) |
491 | { |
499 | { |
492 | /* is this ugly, I ask? */ |
500 | /* is this ugly, I ask? */ |
493 | LEAVE_SCOPE (0); |
501 | LEAVE_SCOPE (0); |
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524 | |
532 | |
525 | Safefree (PL_tmps_stack); |
533 | Safefree (PL_tmps_stack); |
526 | Safefree (PL_markstack); |
534 | Safefree (PL_markstack); |
527 | Safefree (PL_scopestack); |
535 | Safefree (PL_scopestack); |
528 | Safefree (PL_savestack); |
536 | Safefree (PL_savestack); |
529 | #if PERL_VERSION < 9 |
537 | #if !PERL_VERSION_ATLEAST (5,9,0) |
530 | Safefree (PL_retstack); |
538 | Safefree (PL_retstack); |
531 | #endif |
539 | #endif |
532 | } |
540 | } |
533 | |
541 | |
534 | static void |
542 | static void |
535 | setup_coro (struct coro *coro) |
543 | setup_coro (struct coro *coro) |
536 | { |
544 | { |
537 | /* |
545 | /* |
538 | * emulate part of the perl startup here. |
546 | * emulate part of the perl startup here. |
539 | */ |
547 | */ |
540 | dTHX; |
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541 | dSP; |
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542 | UNOP myop; |
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543 | SV *sub_init = (SV *)get_cv ("Coro::State::coro_init", FALSE); |
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544 | |
548 | |
545 | coro_init_stacks (aTHX); |
549 | coro_init_stacks (); |
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550 | |
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551 | { |
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552 | dSP; |
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553 | LOGOP myop; |
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554 | |
546 | /*PL_curcop = 0;*/ |
555 | /*PL_curcop = 0;*/ |
547 | /*PL_in_eval = PL_in_eval;*/ /* inherit */ |
556 | PL_in_eval = 0; |
548 | SvREFCNT_dec (GvAV (PL_defgv)); |
557 | SvREFCNT_dec (GvAV (PL_defgv)); |
549 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
558 | GvAV (PL_defgv) = coro->args; coro->args = 0; |
550 | |
559 | |
551 | SPAGAIN; |
560 | SPAGAIN; |
552 | |
561 | |
553 | Zero (&myop, 1, UNOP); |
562 | Zero (&myop, 1, LOGOP); |
554 | myop.op_next = Nullop; |
563 | myop.op_next = Nullop; |
555 | myop.op_flags = OPf_WANT_VOID; |
564 | myop.op_flags = OPf_WANT_VOID; |
556 | |
565 | |
557 | PL_op = (OP *)&myop; |
566 | PL_op = (OP *)&myop; |
558 | |
567 | |
559 | PUSHMARK(SP); |
568 | PUSHMARK (SP); |
560 | XPUSHs (sub_init); |
569 | PUSHMARK (SP); |
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570 | XPUSHs ((SV *)get_cv ("Coro::State::coro_init", FALSE)); |
561 | PUTBACK; |
571 | PUTBACK; |
562 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
572 | PL_op = PL_ppaddr[OP_ENTERSUB](aTHX); |
563 | SPAGAIN; |
573 | SPAGAIN; |
564 | |
574 | |
565 | ENTER; /* necessary e.g. for dounwind */ |
575 | ENTER; /* necessary e.g. for dounwind */ |
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576 | } |
566 | } |
577 | } |
567 | |
578 | |
568 | static void |
579 | static void |
569 | free_coro_mortal () |
580 | free_coro_mortal () |
570 | { |
581 | { |
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573 | SvREFCNT_dec (coro_mortal); |
584 | SvREFCNT_dec (coro_mortal); |
574 | coro_mortal = 0; |
585 | coro_mortal = 0; |
575 | } |
586 | } |
576 | } |
587 | } |
577 | |
588 | |
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589 | static void NOINLINE |
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590 | prepare_cctx (coro_stack *cctx) |
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591 | { |
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592 | dSP; |
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593 | LOGOP myop; |
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594 | |
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595 | Zero (&myop, 1, LOGOP); |
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596 | myop.op_next = PL_op; |
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597 | myop.op_flags = OPf_WANT_VOID; |
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598 | |
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599 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV (cctx)); |
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600 | |
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601 | PUSHMARK (SP); |
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602 | XPUSHs ((SV *)get_cv ("Coro::State::cctx_init", FALSE)); |
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603 | PUTBACK; |
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604 | PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX); |
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605 | SPAGAIN; |
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606 | } |
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607 | |
578 | static void |
608 | static void |
579 | coro_run (void *arg) |
609 | coro_run (void *arg) |
580 | { |
610 | { |
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611 | /* coro_run is the alternative epilogue of transfer() */ |
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612 | UNLOCK; |
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613 | |
581 | /* |
614 | /* |
582 | * this is a _very_ stripped down perl interpreter ;) |
615 | * this is a _very_ stripped down perl interpreter ;) |
583 | */ |
616 | */ |
584 | dTHX; |
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585 | int ret; |
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586 | |
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587 | UNLOCK; |
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588 | |
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589 | PL_top_env = &PL_start_env; |
617 | PL_top_env = &PL_start_env; |
590 | |
618 | /* inject call to cctx_init */ |
591 | sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg)); |
619 | prepare_cctx ((coro_stack *)arg); |
592 | sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op)); |
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593 | |
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594 | /* continue at cctx_init, without entersub */ |
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595 | PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE)); |
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596 | |
620 | |
597 | /* somebody will hit me for both perl_run and PL_restartop */ |
621 | /* somebody will hit me for both perl_run and PL_restartop */ |
598 | ret = perl_run (aTHX_ PERL_GET_CONTEXT); |
622 | perl_run (PL_curinterp); |
599 | printf ("ret %d\n", ret);//D |
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600 | |
623 | |
601 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
624 | fputs ("FATAL: C coroutine fell over the edge of the world, aborting.\n", stderr); |
602 | abort (); |
625 | abort (); |
603 | } |
626 | } |
604 | |
627 | |
… | |
… | |
657 | |
680 | |
658 | Safefree (stack); |
681 | Safefree (stack); |
659 | } |
682 | } |
660 | |
683 | |
661 | static coro_stack *stack_first; |
684 | static coro_stack *stack_first; |
|
|
685 | static int cctx_count, cctx_idle; |
662 | |
686 | |
663 | static coro_stack * |
687 | static coro_stack * |
664 | stack_get () |
688 | stack_get () |
665 | { |
689 | { |
666 | coro_stack *stack; |
690 | coro_stack *stack; |
667 | |
691 | |
668 | if (stack_first) |
692 | if (stack_first) |
669 | { |
693 | { |
|
|
694 | --cctx_idle; |
670 | stack = stack_first; |
695 | stack = stack_first; |
671 | stack_first = stack->next; |
696 | stack_first = stack->next; |
672 | } |
697 | } |
673 | else |
698 | else |
674 | { |
699 | { |
|
|
700 | ++cctx_count; |
675 | stack = stack_new (); |
701 | stack = stack_new (); |
676 | PL_op = PL_op->op_next; |
702 | PL_op = PL_op->op_next; |
677 | } |
703 | } |
678 | |
704 | |
679 | return stack; |
705 | return stack; |
680 | } |
706 | } |
681 | |
707 | |
682 | static void |
708 | static void |
683 | stack_put (coro_stack *stack) |
709 | stack_put (coro_stack *stack) |
684 | { |
710 | { |
|
|
711 | ++cctx_idle; |
685 | stack->next = stack_first; |
712 | stack->next = stack_first; |
686 | stack_first = stack; |
713 | stack_first = stack; |
687 | } |
714 | } |
688 | |
715 | |
689 | /* never call directly, always through the coro_state_transfer global variable */ |
716 | /* never call directly, always through the coro_state_transfer global variable */ |
690 | static void |
717 | static void NOINLINE |
691 | transfer_impl (pTHX_ struct coro *prev, struct coro *next, int flags) |
718 | transfer (struct coro *prev, struct coro *next, int flags) |
692 | { |
719 | { |
693 | dSTACKLEVEL; |
720 | dSTACKLEVEL; |
694 | |
721 | |
695 | /* sometimes transfer is only called to set idle_sp */ |
722 | /* sometimes transfer is only called to set idle_sp */ |
696 | if (flags == TRANSFER_SET_STACKLEVEL) |
723 | if (flags == TRANSFER_SET_STACKLEVEL) |
… | |
… | |
745 | |
772 | |
746 | UNLOCK; |
773 | UNLOCK; |
747 | } |
774 | } |
748 | } |
775 | } |
749 | |
776 | |
750 | /* use this function pointer to call the above function */ |
|
|
751 | /* this is done to increase chances of the compiler not inlining the call */ |
|
|
752 | /* not static to make it even harder for the compiler (and theoretically impossible in most cases */ |
|
|
753 | void (*coro_state_transfer)(pTHX_ struct coro *prev, struct coro *next, int flags) = transfer_impl; |
|
|
754 | |
|
|
755 | struct transfer_args |
777 | struct transfer_args |
756 | { |
778 | { |
757 | struct coro *prev, *next; |
779 | struct coro *prev, *next; |
758 | int flags; |
780 | int flags; |
759 | }; |
781 | }; |
760 | |
782 | |
761 | #define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags) |
783 | #define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags) |
762 | |
784 | |
763 | static void |
785 | static void |
764 | coro_state_destroy (struct coro *coro) |
786 | coro_state_destroy (struct coro *coro) |
765 | { |
787 | { |
766 | if (coro->refcnt--) |
788 | if (coro->refcnt--) |
… | |
… | |
768 | |
790 | |
769 | if (coro->mainstack && coro->mainstack != main_mainstack) |
791 | if (coro->mainstack && coro->mainstack != main_mainstack) |
770 | { |
792 | { |
771 | struct coro temp; |
793 | struct coro temp; |
772 | |
794 | |
773 | SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL); |
795 | SAVE ((&temp), TRANSFER_SAVE_ALL); |
774 | LOAD (aTHX_ coro); |
796 | LOAD (coro); |
775 | |
797 | |
776 | destroy_stacks (aTHX); |
798 | coro_destroy_stacks (); |
777 | |
799 | |
778 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
800 | LOAD ((&temp)); /* this will get rid of defsv etc.. */ |
779 | |
801 | |
780 | coro->mainstack = 0; |
802 | coro->mainstack = 0; |
781 | } |
803 | } |
… | |
… | |
784 | SvREFCNT_dec (coro->args); |
806 | SvREFCNT_dec (coro->args); |
785 | Safefree (coro); |
807 | Safefree (coro); |
786 | } |
808 | } |
787 | |
809 | |
788 | static int |
810 | static int |
789 | coro_state_clear (SV *sv, MAGIC *mg) |
811 | coro_state_clear (pTHX_ SV *sv, MAGIC *mg) |
790 | { |
812 | { |
791 | struct coro *coro = (struct coro *)mg->mg_ptr; |
813 | struct coro *coro = (struct coro *)mg->mg_ptr; |
792 | mg->mg_ptr = 0; |
814 | mg->mg_ptr = 0; |
793 | |
815 | |
794 | coro_state_destroy (coro); |
816 | coro_state_destroy (coro); |
795 | |
817 | |
796 | return 0; |
818 | return 0; |
797 | } |
819 | } |
798 | |
820 | |
799 | static int |
821 | static int |
800 | coro_state_dup (MAGIC *mg, CLONE_PARAMS *params) |
822 | coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params) |
801 | { |
823 | { |
802 | struct coro *coro = (struct coro *)mg->mg_ptr; |
824 | struct coro *coro = (struct coro *)mg->mg_ptr; |
803 | |
825 | |
804 | ++coro->refcnt; |
826 | ++coro->refcnt; |
805 | |
827 | |
806 | return 0; |
828 | return 0; |
807 | } |
829 | } |
808 | |
830 | |
809 | static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 }; |
831 | static MGVTBL coro_state_vtbl = { |
|
|
832 | 0, 0, 0, 0, |
|
|
833 | coro_state_clear, |
|
|
834 | 0, |
|
|
835 | #ifdef MGf_DUP |
|
|
836 | coro_state_dup, |
|
|
837 | #else |
|
|
838 | # define MGf_DUP 0 |
|
|
839 | #endif |
|
|
840 | }; |
810 | |
841 | |
811 | static struct coro * |
842 | static struct coro * |
812 | SvSTATE (SV *coro) |
843 | SvSTATE (SV *coro) |
813 | { |
844 | { |
814 | HV *stash; |
845 | HV *stash; |
… | |
… | |
829 | assert (mg->mg_type == PERL_MAGIC_ext); |
860 | assert (mg->mg_type == PERL_MAGIC_ext); |
830 | return (struct coro *)mg->mg_ptr; |
861 | return (struct coro *)mg->mg_ptr; |
831 | } |
862 | } |
832 | |
863 | |
833 | static void |
864 | static void |
834 | prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev, SV *next, int flags) |
865 | prepare_transfer (struct transfer_args *ta, SV *prev, SV *next, int flags) |
835 | { |
866 | { |
836 | ta->prev = SvSTATE (prev); |
867 | ta->prev = SvSTATE (prev); |
837 | ta->next = SvSTATE (next); |
868 | ta->next = SvSTATE (next); |
838 | ta->flags = flags; |
869 | ta->flags = flags; |
839 | } |
870 | } |
… | |
… | |
842 | api_transfer (SV *prev, SV *next, int flags) |
873 | api_transfer (SV *prev, SV *next, int flags) |
843 | { |
874 | { |
844 | dTHX; |
875 | dTHX; |
845 | struct transfer_args ta; |
876 | struct transfer_args ta; |
846 | |
877 | |
847 | prepare_transfer (aTHX_ &ta, prev, next, flags); |
878 | prepare_transfer (&ta, prev, next, flags); |
848 | TRANSFER (ta); |
879 | TRANSFER (ta); |
849 | } |
880 | } |
850 | |
881 | |
851 | /** Coro ********************************************************************/ |
882 | /** Coro ********************************************************************/ |
852 | |
883 | |
… | |
… | |
861 | static GV *coro_current, *coro_idle; |
892 | static GV *coro_current, *coro_idle; |
862 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
893 | static AV *coro_ready [PRIO_MAX-PRIO_MIN+1]; |
863 | static int coro_nready; |
894 | static int coro_nready; |
864 | |
895 | |
865 | static void |
896 | static void |
866 | coro_enq (pTHX_ SV *sv) |
897 | coro_enq (SV *sv) |
867 | { |
898 | { |
868 | int prio; |
899 | int prio; |
869 | |
900 | |
870 | if (SvTYPE (sv) != SVt_PVHV) |
901 | if (SvTYPE (sv) != SVt_PVHV) |
871 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
902 | croak ("Coro::ready tried to enqueue something that is not a coroutine"); |
… | |
… | |
875 | av_push (coro_ready [prio - PRIO_MIN], sv); |
906 | av_push (coro_ready [prio - PRIO_MIN], sv); |
876 | coro_nready++; |
907 | coro_nready++; |
877 | } |
908 | } |
878 | |
909 | |
879 | static SV * |
910 | static SV * |
880 | coro_deq (pTHX_ int min_prio) |
911 | coro_deq (int min_prio) |
881 | { |
912 | { |
882 | int prio = PRIO_MAX - PRIO_MIN; |
913 | int prio = PRIO_MAX - PRIO_MIN; |
883 | |
914 | |
884 | min_prio -= PRIO_MIN; |
915 | min_prio -= PRIO_MIN; |
885 | if (min_prio < 0) |
916 | if (min_prio < 0) |
… | |
… | |
902 | |
933 | |
903 | if (SvROK (coro)) |
934 | if (SvROK (coro)) |
904 | coro = SvRV (coro); |
935 | coro = SvRV (coro); |
905 | |
936 | |
906 | LOCK; |
937 | LOCK; |
907 | coro_enq (aTHX_ SvREFCNT_inc (coro)); |
938 | coro_enq (SvREFCNT_inc (coro)); |
908 | UNLOCK; |
939 | UNLOCK; |
909 | } |
940 | } |
910 | |
941 | |
911 | static void |
942 | static void |
912 | prepare_schedule (aTHX_ struct transfer_args *ta) |
943 | prepare_schedule (struct transfer_args *ta) |
913 | { |
944 | { |
914 | SV *current, *prev, *next; |
945 | SV *current, *prev, *next; |
915 | |
|
|
916 | LOCK; |
|
|
917 | |
946 | |
918 | current = GvSV (coro_current); |
947 | current = GvSV (coro_current); |
919 | |
948 | |
920 | for (;;) |
949 | for (;;) |
921 | { |
950 | { |
922 | LOCK; |
951 | LOCK; |
923 | |
|
|
924 | next = coro_deq (aTHX_ PRIO_MIN); |
952 | next = coro_deq (PRIO_MIN); |
|
|
953 | UNLOCK; |
925 | |
954 | |
926 | if (next) |
955 | if (next) |
927 | break; |
956 | break; |
928 | |
|
|
929 | UNLOCK; |
|
|
930 | |
957 | |
931 | { |
958 | { |
932 | dSP; |
959 | dSP; |
933 | |
960 | |
934 | ENTER; |
961 | ENTER; |
… | |
… | |
945 | |
972 | |
946 | prev = SvRV (current); |
973 | prev = SvRV (current); |
947 | SvRV (current) = next; |
974 | SvRV (current) = next; |
948 | |
975 | |
949 | /* free this only after the transfer */ |
976 | /* free this only after the transfer */ |
|
|
977 | LOCK; |
950 | free_coro_mortal (); |
978 | free_coro_mortal (); |
|
|
979 | UNLOCK; |
951 | coro_mortal = prev; |
980 | coro_mortal = prev; |
952 | |
981 | |
953 | ta->prev = SvSTATE (prev); |
982 | ta->prev = SvSTATE (prev); |
954 | ta->next = SvSTATE (next); |
983 | ta->next = SvSTATE (next); |
955 | ta->flags = TRANSFER_SAVE_ALL; |
984 | ta->flags = TRANSFER_SAVE_ALL; |
956 | |
|
|
957 | UNLOCK; |
|
|
958 | } |
985 | } |
959 | |
986 | |
960 | static void |
987 | static void |
961 | prepare_cede (aTHX_ struct transfer_args *ta) |
988 | prepare_cede (struct transfer_args *ta) |
962 | { |
989 | { |
963 | LOCK; |
990 | LOCK; |
964 | coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
991 | coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current)))); |
965 | UNLOCK; |
992 | UNLOCK; |
966 | |
993 | |
967 | prepare_schedule (ta); |
994 | prepare_schedule (ta); |
968 | } |
995 | } |
969 | |
996 | |
… | |
… | |
1112 | ++coro_src->refcnt; |
1139 | ++coro_src->refcnt; |
1113 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
1140 | sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP; |
1114 | } |
1141 | } |
1115 | |
1142 | |
1116 | void |
1143 | void |
1117 | _nonlocal_goto (IV nextop) |
|
|
1118 | CODE: |
|
|
1119 | /* uuh, somebody will kill me again for this */ |
|
|
1120 | PL_op->op_next = INT2PTR (OP *, nextop); |
|
|
1121 | |
|
|
1122 | void |
|
|
1123 | _exit (code) |
1144 | _exit (code) |
1124 | int code |
1145 | int code |
1125 | PROTOTYPE: $ |
1146 | PROTOTYPE: $ |
1126 | CODE: |
1147 | CODE: |
1127 | _exit (code); |
1148 | _exit (code); |