[ViewVC] Diff of: cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC

…		…
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if USE_VALGRIND	9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>	10	# include <valgrind/valgrind.h>
11	#endif	11	#endif
		12
		13	/* the maximum number of idle cctx that will be pooled */
		14	#define MAX_IDLE_CCTX 8
12		15
13	#define PERL_VERSION_ATLEAST(a,b,c) \	16	#define PERL_VERSION_ATLEAST(a,b,c) \
14	(PERL_REVISION > (a) \	17	(PERL_REVISION > (a) \
15	\|\| (PERL_REVISION == (a) \	18	\|\| (PERL_REVISION == (a) \
16	&& (PERL_VERSION > (b) \	19	&& (PERL_VERSION > (b) \
…		…
119	/* cpu state */	122	/* cpu state */
120	void idle_sp; / sp of top-level transfer/schedule/cede call */	123	void idle_sp; / sp of top-level transfer/schedule/cede call */
121	JMPENV *top_env;	124	JMPENV *top_env;
122	coro_context cctx;	125	coro_context cctx;
123		126
		127	int inuse;
		128
124	#if USE_VALGRIND	129	#if USE_VALGRIND
125	int valgrind_id;	130	int valgrind_id;
126	#endif	131	#endif
127	} coro_cctx;	132	} coro_cctx;
		133
		134	enum {
		135	CF_RUNNING = 0x0001, /* coroutine is running */
		136	CF_READY = 0x0002, /* coroutine is ready */
		137	CF_NEW = 0x0004, /* ahs never been switched to */
		138	};
128		139
129	/* this is a structure representing a perl-level coroutine */	140	/* this is a structure representing a perl-level coroutine */
130	struct coro {	141	struct coro {
131	/* the c coroutine allocated to this perl coroutine, if any */	142	/* the c coroutine allocated to this perl coroutine, if any */
132	coro_cctx *cctx;	143	coro_cctx *cctx;
133		144
134	/* data associated with this coroutine (initial args) */	145	/* data associated with this coroutine (initial args) */
135	AV *args;	146	AV *args;
136	int refcnt;	147	int refcnt;
		148	int flags;
137		149
138	/* optionally saved, might be zero */	150	/* optionally saved, might be zero */
139	AV *defav;	151	AV *defav;
140	SV *defsv;	152	SV *defsv;
141	SV *errsv;	153	SV *errsv;
142		154
143	/* saved global state not related to stacks */	155	#define VAR(name,type) type name;
144	U8 dowarn;	156	# include "state.h"
145	I32 in_eval;	157	#undef VAR
146
147	/* the stacks and related info (callchain etc..) */
148	PERL_SI *curstackinfo;
149	AV *curstack;
150	AV *mainstack;
151	SV **stack_sp;
152	OP *op;
153	SV **curpad;
154	AV *comppad;
155	CV *compcv;
156	SV **stack_base;
157	SV **stack_max;
158	SV **tmps_stack;
159	I32 tmps_floor;
160	I32 tmps_ix;
161	I32 tmps_max;
162	I32 *markstack;
163	I32 *markstack_ptr;
164	I32 *markstack_max;
165	I32 *scopestack;
166	I32 scopestack_ix;
167	I32 scopestack_max;
168	ANY *savestack;
169	I32 savestack_ix;
170	I32 savestack_max;
171	OP **retstack;
172	I32 retstack_ix;
173	I32 retstack_max;
174	PMOP *curpm;
175	COP *curcop;
176		158
177	/* coro process data */	159	/* coro process data */
178	int prio;	160	int prio;
179	};	161	};
180		162
…		…
244		226
245	#define PERL_MAGIC_coro PERL_MAGIC_ext	227	#define PERL_MAGIC_coro PERL_MAGIC_ext
246		228
247	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	229	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};
248		230
		231	#define CORO_MAGIC(cv) \
		232	SvMAGIC (cv) \
		233	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
		234	? SvMAGIC (cv) \
		235	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
		236	: 0
		237
249	/* the next two functions merely cache the padlists */	238	/* the next two functions merely cache the padlists */
250	static void	239	static void
251	get_padlist (CV *cv)	240	get_padlist (CV *cv)
252	{	241	{
253	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	242	MAGIC *mg = CORO_MAGIC (cv);
		243	AV *av;
254		244
255	if (mg && AvFILLp ((AV *)mg->mg_obj) >= 0)	245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV )av_pop ((AV )mg->mg_obj);	246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	247	else
258	{	248	{
259	#if 0	249	#if 0
260	/* this is probably cleaner, but also slower? */	250	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	251	CV *cp = Perl_cv_clone (cv);
…		…
269	}	259	}
270		260
271	static void	261	static void
272	put_padlist (CV *cv)	262	put_padlist (CV *cv)
273	{	263	{
274	MAGIC mg = mg_find ((SV )cv, PERL_MAGIC_coro);	264	MAGIC *mg = CORO_MAGIC (cv);
		265	AV *av;
275		266
276	if (!mg)	267	if (!mg)
277	{	268	{
278	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	269	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
279	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	270	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
280	mg->mg_virtual = &vtbl_coro;	271	mg->mg_virtual = &vtbl_coro;
281	mg->mg_obj = (SV *)newAV ();	272	mg->mg_obj = (SV *)newAV ();
282	}	273	}
283		274
284	av_push ((AV )mg->mg_obj, (SV )CvPADLIST (cv));	275	av = (AV *)mg->mg_obj;
		276
		277	if (AvFILLp (av) >= AvMAX (av))
		278	av_extend (av, AvMAX (av) + 1);
		279
		280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
285	}	281	}
286		282
287	#define SB do {	283	#define SB do {
288	#define SE } while (0)	284	#define SE } while (0)
289		285
290	#define LOAD(state) load_state((state));	286	#define LOAD(state) load_state ((state))
291	#define SAVE(state,flags) save_state((state),(flags));	287	#define SAVE(state,flags) save_state ((state),(flags))
292		288
293	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE	289	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
294		290
295	static void	291	static void
296	load_state(Coro__State c)	292	load_state (Coro__State c)
297	{	293	{
298	PL_dowarn = c->dowarn;	294	#define VAR(name,type) PL_ ## name = c->name;
299	PL_in_eval = c->in_eval;	295	# include "state.h"
300		296	#undef VAR
301	PL_curstackinfo = c->curstackinfo;
302	PL_curstack = c->curstack;
303	PL_mainstack = c->mainstack;
304	PL_stack_sp = c->stack_sp;
305	PL_op = c->op;
306	PL_curpad = c->curpad;
307	PL_comppad = c->comppad;
308	PL_compcv = c->compcv;
309	PL_stack_base = c->stack_base;
310	PL_stack_max = c->stack_max;
311	PL_tmps_stack = c->tmps_stack;
312	PL_tmps_floor = c->tmps_floor;
313	PL_tmps_ix = c->tmps_ix;
314	PL_tmps_max = c->tmps_max;
315	PL_markstack = c->markstack;
316	PL_markstack_ptr = c->markstack_ptr;
317	PL_markstack_max = c->markstack_max;
318	PL_scopestack = c->scopestack;
319	PL_scopestack_ix = c->scopestack_ix;
320	PL_scopestack_max = c->scopestack_max;
321	PL_savestack = c->savestack;
322	PL_savestack_ix = c->savestack_ix;
323	PL_savestack_max = c->savestack_max;
324	#if !PERL_VERSION_ATLEAST (5,9,0)
325	PL_retstack = c->retstack;
326	PL_retstack_ix = c->retstack_ix;
327	PL_retstack_max = c->retstack_max;
328	#endif
329	PL_curpm = c->curpm;
330	PL_curcop = c->curcop;
331		297
332	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
333	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
334	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
335		301
…		…
338	CV *cv;	304	CV *cv;
339		305
340	/* now do the ugly restore mess */	306	/* now do the ugly restore mess */
341	while ((cv = (CV *)POPs))	307	while ((cv = (CV *)POPs))
342	{	308	{
343	AV padlist = (AV )POPs;
344
345	if (padlist)
346	{
347	put_padlist (cv); /* mark this padlist as available */	309	put_padlist (cv); /* mark this padlist as available */
348	CvPADLIST(cv) = padlist;	310	CvDEPTH (cv) = PTR2IV (POPs);
349	}	311	CvPADLIST (cv) = (AV *)POPs;
350
351	++CvDEPTH(cv);
352	}	312	}
353		313
354	PUTBACK;	314	PUTBACK;
355	}	315	}
356	}	316	}
357		317
358	static void	318	static void
359	save_state(Coro__State c, int flags)	319	save_state (Coro__State c, int flags)
360	{	320	{
361	{	321	{
362	dSP;	322	dSP;
363	I32 cxix = cxstack_ix;	323	I32 cxix = cxstack_ix;
364	PERL_CONTEXT *ccstk = cxstack;	324	PERL_CONTEXT *ccstk = cxstack;
…		…
375	{	335	{
376	while (cxix >= 0)	336	while (cxix >= 0)
377	{	337	{
378	PERL_CONTEXT *cx = &ccstk[cxix--];	338	PERL_CONTEXT *cx = &ccstk[cxix--];
379		339
380	if (CxTYPE(cx) == CXt_SUB)	340	if (CxTYPE (cx) == CXt_SUB)
381	{	341	{
382	CV *cv = cx->blk_sub.cv;	342	CV *cv = cx->blk_sub.cv;
		343
383	if (CvDEPTH(cv))	344	if (CvDEPTH (cv))
384	{	345	{
385	EXTEND (SP, CvDEPTH(cv)*2);	346	EXTEND (SP, 3);
386		347
387	while (--CvDEPTH(cv))
388	{
389	/* this tells the restore code to increment CvDEPTH */
390	PUSHs (Nullsv);
391	PUSHs ((SV *)cv);
392	}
393
394	PUSHs ((SV *)CvPADLIST(cv));	348	PUSHs ((SV *)CvPADLIST (cv));
		349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
395	PUSHs ((SV *)cv);	350	PUSHs ((SV *)cv);
396		351
		352	CvDEPTH (cv) = 0;
397	get_padlist (cv);	353	get_padlist (cv);
398	}	354	}
399	}	355	}
400	#ifdef CXt_FORMAT	356	#ifdef CXt_FORMAT
401	else if (CxTYPE(cx) == CXt_FORMAT)	357	else if (CxTYPE (cx) == CXt_FORMAT)
402	{	358	{
403	/* I never used formats, so how should I know how these are implemented? */	359	/* I never used formats, so how should I know how these are implemented? */
404	/* my bold guess is as a simple, plain sub... */	360	/* my bold guess is as a simple, plain sub... */
405	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
406	}	362	}
…		…
420		376
421	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
422	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
423	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
424		380
425	c->dowarn = PL_dowarn;	381	#define VAR(name,type)c->name = PL_ ## name;
426	c->in_eval = PL_in_eval;	382	# include "state.h"
427		383	#undef VAR
428	c->curstackinfo = PL_curstackinfo;
429	c->curstack = PL_curstack;
430	c->mainstack = PL_mainstack;
431	c->stack_sp = PL_stack_sp;
432	c->op = PL_op;
433	c->curpad = PL_curpad;
434	c->comppad = PL_comppad;
435	c->compcv = PL_compcv;
436	c->stack_base = PL_stack_base;
437	c->stack_max = PL_stack_max;
438	c->tmps_stack = PL_tmps_stack;
439	c->tmps_floor = PL_tmps_floor;
440	c->tmps_ix = PL_tmps_ix;
441	c->tmps_max = PL_tmps_max;
442	c->markstack = PL_markstack;
443	c->markstack_ptr = PL_markstack_ptr;
444	c->markstack_max = PL_markstack_max;
445	c->scopestack = PL_scopestack;
446	c->scopestack_ix = PL_scopestack_ix;
447	c->scopestack_max = PL_scopestack_max;
448	c->savestack = PL_savestack;
449	c->savestack_ix = PL_savestack_ix;
450	c->savestack_max = PL_savestack_max;
451	#if !PERL_VERSION_ATLEAST (5,9,0)
452	c->retstack = PL_retstack;
453	c->retstack_ix = PL_retstack_ix;
454	c->retstack_max = PL_retstack_max;
455	#endif
456	c->curpm = PL_curpm;
457	c->curcop = PL_curcop;
458	}	384	}
459		385
460	/*	386	/*
461	* allocate various perl stacks. This is an exact copy	387	* allocate various perl stacks. This is an exact copy
462	* of perl.c:init_stacks, except that it uses less memory	388	* of perl.c:init_stacks, except that it uses less memory
…		…
464	* not usually need a lot of stackspace.	390	* not usually need a lot of stackspace.
465	*/	391	*/
466	static void	392	static void
467	coro_init_stacks ()	393	coro_init_stacks ()
468	{	394	{
469	PL_curstackinfo = new_stackinfo(96, 1024/sizeof(PERL_CONTEXT) - 1);	395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
470	PL_curstackinfo->si_type = PERLSI_MAIN;	396	PL_curstackinfo->si_type = PERLSI_MAIN;
471	PL_curstack = PL_curstackinfo->si_stack;	397	PL_curstack = PL_curstackinfo->si_stack;
472	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	398	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
473		399
474	PL_stack_base = AvARRAY(PL_curstack);	400	PL_stack_base = AvARRAY(PL_curstack);
475	PL_stack_sp = PL_stack_base;	401	PL_stack_sp = PL_stack_base;
476	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	402	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
477		403
478	New(50,PL_tmps_stack,96,SV*);	404	New(50,PL_tmps_stack,128,SV*);
479	PL_tmps_floor = -1;	405	PL_tmps_floor = -1;
480	PL_tmps_ix = -1;	406	PL_tmps_ix = -1;
481	PL_tmps_max = 96;	407	PL_tmps_max = 128;
482		408
483	New(54,PL_markstack,16,I32);	409	New(54,PL_markstack,32,I32);
484	PL_markstack_ptr = PL_markstack;	410	PL_markstack_ptr = PL_markstack;
485	PL_markstack_max = PL_markstack + 16;	411	PL_markstack_max = PL_markstack + 32;
486		412
487	#ifdef SET_MARK_OFFSET	413	#ifdef SET_MARK_OFFSET
488	SET_MARK_OFFSET;	414	SET_MARK_OFFSET;
489	#endif	415	#endif
490		416
491	New(54,PL_scopestack,16,I32);	417	New(54,PL_scopestack,32,I32);
492	PL_scopestack_ix = 0;	418	PL_scopestack_ix = 0;
493	PL_scopestack_max = 16;	419	PL_scopestack_max = 32;
494		420
495	New(54,PL_savestack,96,ANY);	421	New(54,PL_savestack,64,ANY);
496	PL_savestack_ix = 0;	422	PL_savestack_ix = 0;
497	PL_savestack_max = 96;	423	PL_savestack_max = 64;
498		424
499	#if !PERL_VERSION_ATLEAST (5,9,0)	425	#if !PERL_VERSION_ATLEAST (5,9,0)
500	New(54,PL_retstack,8,OP*);	426	New(54,PL_retstack,16,OP*);
501	PL_retstack_ix = 0;	427	PL_retstack_ix = 0;
502	PL_retstack_max = 8;	428	PL_retstack_max = 16;
503	#endif	429	#endif
504	}	430	}
505		431
506	/*	432	/*
507	* destroy the stacks, the callchain etc...	433	* destroy the stacks, the callchain etc...
…		…
560	* emulate part of the perl startup here.	486	* emulate part of the perl startup here.
561	*/	487	*/
562		488
563	coro_init_stacks ();	489	coro_init_stacks ();
564		490
565	PL_curcop = 0;	491	PL_curcop = &PL_compiling;
566	PL_in_eval = 0;	492	PL_in_eval = EVAL_NULL;
567	PL_curpm = 0;	493	PL_curpm = 0;
		494	PL_localizing = 0;
		495	PL_dirty = 0;
		496	PL_restartop = 0;
568		497
569	{	498	{
570	dSP;	499	dSP;
571	LOGOP myop;	500	LOGOP myop;
572		501
…		…
585	PUSHMARK (SP);	514	PUSHMARK (SP);
586	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
587	PUTBACK;	516	PUTBACK;
588	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
589	SPAGAIN;	518	SPAGAIN;
590
591	ENTER; /* necessary e.g. for dounwind */
592	}	519	}
		520
		521	ENTER; /* necessary e.g. for dounwind */
593	}	522	}
594		523
595	static void	524	static void
596	free_coro_mortal ()	525	free_coro_mortal ()
597	{	526	{
…		…
691		620
692	return cctx;	621	return cctx;
693	}	622	}
694		623
695	static void	624	static void
696	cctx_free (coro_cctx *cctx)	625	cctx_destroy (coro_cctx *cctx)
697	{	626	{
698	if (!cctx)	627	if (!cctx)
699	return;	628	return;
700		629
701	--cctx_count;	630	--cctx_count;
…		…
718	{	647	{
719	coro_cctx *cctx;	648	coro_cctx *cctx;
720		649
721	if (cctx_first)	650	if (cctx_first)
722	{	651	{
723	--cctx_idle;
724	cctx = cctx_first;	652	cctx = cctx_first;
725	cctx_first = cctx->next;	653	cctx_first = cctx->next;
		654	--cctx_idle;
726	}	655	}
727	else	656	else
728	{	657	{
729	cctx = cctx_new ();	658	cctx = cctx_new ();
730	PL_op = PL_op->op_next;	659	PL_op = PL_op->op_next;
…		…
734	}	663	}
735		664
736	static void	665	static void
737	cctx_put (coro_cctx *cctx)	666	cctx_put (coro_cctx *cctx)
738	{	667	{
		668	/* free another cctx if overlimit */
		669	if (cctx_idle >= MAX_IDLE_CCTX)
		670	{
		671	coro_cctx *first = cctx_first;
		672	cctx_first = first->next;
		673	--cctx_idle;
		674
		675	assert (!first->inuse);
		676	cctx_destroy (first);
		677	}
		678
739	++cctx_idle;	679	++cctx_idle;
740	cctx->next = cctx_first;	680	cctx->next = cctx_first;
741	cctx_first = cctx;	681	cctx_first = cctx;
742	}	682	}
743		683
…		…
752	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
753	else if (prev != next)	693	else if (prev != next)
754	{	694	{
755	coro_cctx *prev__cctx;	695	coro_cctx *prev__cctx;
756		696
		697	if (prev->flags & CF_NEW)
		698	{
		699	/* create a new empty context */
		700	Newz (0, prev->cctx, 1, coro_cctx);
		701	prev->cctx->inuse = 1;
		702	prev->flags &= ~CF_NEW;
		703	prev->flags \|= CF_RUNNING;
		704	}
		705
		706	/TODO: must not croak here /
		707	if (!prev->flags & CF_RUNNING)
		708	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
		709
		710	if (next->flags & CF_RUNNING)
		711	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		712
		713	prev->flags &= ~CF_RUNNING;
		714	next->flags \|= CF_RUNNING;
		715
757	LOCK;	716	LOCK;
758		717
759	if (next->mainstack)	718	if (next->flags & CF_NEW)
		719	{
		720	/* need to start coroutine */
		721	next->flags &= ~CF_NEW;
		722	/* first get rid of the old state */
		723	SAVE (prev, -1);
		724	/* setup coroutine call */
		725	setup_coro (next);
		726	/* need a new stack */
		727	assert (!next->stack);
		728	}
		729	else
760	{	730	{
761	/* coroutine already started */	731	/* coroutine already started */
762	SAVE (prev, flags);	732	SAVE (prev, flags);
763	LOAD (next);	733	LOAD (next);
764	}	734	}
765	else
766	{
767	/* need to start coroutine */
768	/* first get rid of the old state */
769	SAVE (prev, -1);
770	/* setup coroutine call */
771	setup_coro (next);
772	/* need a stack */
773	next->cctx = 0;
774	}
775
776	if (!prev->cctx)
777	/* create a new empty context */
778	Newz (0, prev->cctx, 1, coro_cctx);
779		735
780	prev__cctx = prev->cctx;	736	prev__cctx = prev->cctx;
781		737
782	/* possibly "free" the cctx */	738	/* possibly "free" the cctx */
783	if (prev__cctx->idle_sp == STACKLEVEL)	739	if (prev__cctx->idle_sp == STACKLEVEL)
784	{	740	{
		741	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
		742	assert (PL_top_env == prev__cctx->top_env);
		743
		744	prev->cctx = 0;
		745
785	cctx_put (prev__cctx);	746	cctx_put (prev__cctx);
786	prev->cctx = 0;	747	prev__cctx->inuse = 0;
787	}	748	}
788		749
789	if (!next->cctx)	750	if (!next->cctx)
		751	{
790	next->cctx = cctx_get ();	752	next->cctx = cctx_get ();
		753	assert (!next->cctx->inuse);
		754	next->cctx->inuse = 1;
		755	}
791		756
792	if (prev__cctx != next->cctx)	757	if (prev__cctx != next->cctx)
793	{	758	{
794	prev__cctx->top_env = PL_top_env;	759	prev__cctx->top_env = PL_top_env;
795	PL_top_env = next->cctx->top_env;	760	PL_top_env = next->cctx->top_env;
…		…
818		783
819	if (coro->mainstack && coro->mainstack != main_mainstack)	784	if (coro->mainstack && coro->mainstack != main_mainstack)
820	{	785	{
821	struct coro temp;	786	struct coro temp;
822		787
		788	if (coro->flags & CF_RUNNING)
		789	croak ("FATAL: tried to destroy currently running coroutine");
		790
823	SAVE ((&temp), TRANSFER_SAVE_ALL);	791	SAVE ((&temp), TRANSFER_SAVE_ALL);
824	LOAD (coro);	792	LOAD (coro);
825		793
826	coro_destroy_stacks ();	794	coro_destroy_stacks ();
827		795
828	LOAD ((&temp)); /* this will get rid of defsv etc.. */	796	LOAD ((&temp)); /* this will get rid of defsv etc.. */
829		797
830	coro->mainstack = 0;	798	coro->mainstack = 0;
831	}	799	}
832		800
833	cctx_free (coro->cctx);	801	cctx_destroy (coro->cctx);
834	SvREFCNT_dec (coro->args);	802	SvREFCNT_dec (coro->args);
835	Safefree (coro);	803	Safefree (coro);
836	}	804	}
837		805
838	static int	806	static int
…		…
898	}	866	}
899		867
900	static void	868	static void
901	api_transfer (SV prev, SV next, int flags)	869	api_transfer (SV prev, SV next, int flags)
902	{	870	{
903	dTHX;
904	struct transfer_args ta;	871	struct transfer_args ta;
905		872
906	prepare_transfer (&ta, prev, next, flags);	873	prepare_transfer (&ta, prev, next, flags);
907	TRANSFER (ta);	874	TRANSFER (ta);
908	}	875	}
…		…
915	#define PRIO_LOW -1	882	#define PRIO_LOW -1
916	#define PRIO_IDLE -3	883	#define PRIO_IDLE -3
917	#define PRIO_MIN -4	884	#define PRIO_MIN -4
918		885
919	/* for Coro.pm */	886	/* for Coro.pm */
920	static GV coro_current, coro_idle;	887	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;	889	static int coro_nready;
923		890
924	static void	891	static void
925	coro_enq (SV *sv)	892	coro_enq (SV *coro_sv)
926	{	893	{
927	int prio;
928
929	if (SvTYPE (sv) != SVt_PVHV)
930	croak ("Coro::ready tried to enqueue something that is not a coroutine");
931
932	prio = SvSTATE (sv)->prio;
933
934	av_push (coro_ready [prio - PRIO_MIN], sv);	894	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
935	coro_nready++;	895	coro_nready++;
936	}	896	}
937		897
938	static SV *	898	static SV *
939	coro_deq (int min_prio)	899	coro_deq (int min_prio)
…		…
952	}	912	}
953		913
954	return 0;	914	return 0;
955	}	915	}
956		916
957	static void	917	static int
958	api_ready (SV *coro)	918	api_ready (SV *coro_sv)
959	{	919	{
960	dTHX;	920	struct coro *coro;
961		921
962	if (SvROK (coro))	922	if (SvROK (coro_sv))
963	coro = SvRV (coro);	923	coro_sv = SvRV (coro_sv);
		924
		925	coro = SvSTATE (coro_sv);
		926
		927	if (coro->flags & CF_READY)
		928	return 0;
		929
		930	#if 0 /* this is actually harmless */
		931	if (coro->flags & CF_RUNNING)
		932	croak ("Coro::ready called on currently running coroutine");
		933	#endif
		934
		935	coro->flags \|= CF_READY;
964		936
965	LOCK;	937	LOCK;
966	coro_enq (SvREFCNT_inc (coro));	938	coro_enq (SvREFCNT_inc (coro_sv));
967	UNLOCK;	939	UNLOCK;
		940
		941	return 1;
		942	}
		943
		944	static int
		945	api_is_ready (SV *coro_sv)
		946	{
		947	return !!SvSTATE (coro_sv)->flags & CF_READY;
968	}	948	}
969		949
970	static void	950	static void
971	prepare_schedule (struct transfer_args *ta)	951	prepare_schedule (struct transfer_args *ta)
972	{	952	{
973	SV current, prev, *next;	953	SV prev, next;
974
975	current = GvSV (coro_current);
976		954
977	for (;;)	955	for (;;)
978	{	956	{
979	LOCK;	957	LOCK;
980	next = coro_deq (PRIO_MIN);	958	next = coro_deq (PRIO_MIN);
…		…
989	ENTER;	967	ENTER;
990	SAVETMPS;	968	SAVETMPS;
991		969
992	PUSHMARK (SP);	970	PUSHMARK (SP);
993	PUTBACK;	971	PUTBACK;
994	call_sv (GvSV (coro_idle), G_DISCARD);	972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
995		973
996	FREETMPS;	974	FREETMPS;
997	LEAVE;	975	LEAVE;
998	}	976	}
999	}	977	}
1000		978
1001	prev = SvRV (current);	979	prev = SvRV (coro_current);
1002	SvRV (current) = next;	980	SvRV_set (coro_current, next);
1003		981
1004	/* free this only after the transfer */	982	/* free this only after the transfer */
1005	LOCK;	983	LOCK;
1006	free_coro_mortal ();	984	free_coro_mortal ();
1007	UNLOCK;	985	UNLOCK;
1008	coro_mortal = prev;	986	coro_mortal = prev;
1009		987
		988	assert (!SvROK(prev));//D
		989	assert (!SvROK(next));//D
		990
1010	ta->prev = SvSTATE (prev);	991	ta->prev = SvSTATE (prev);
1011	ta->next = SvSTATE (next);	992	ta->next = SvSTATE (next);
1012	ta->flags = TRANSFER_SAVE_ALL;	993	ta->flags = TRANSFER_SAVE_ALL;
		994
		995	assert (ta->flags & CF_READY);
		996	ta->next->flags &= ~CF_READY;
1013	}	997	}
1014		998
1015	static void	999	static void
1016	prepare_cede (struct transfer_args *ta)	1000	prepare_cede (struct transfer_args *ta)
1017	{	1001	{
1018	LOCK;	1002	api_ready (coro_current);
1019	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
1020	UNLOCK;
1021		1003
1022	prepare_schedule (ta);	1004	prepare_schedule (ta);
1023	}	1005	}
1024		1006
1025	static void	1007	static void
1026	api_schedule (void)	1008	api_schedule (void)
1027	{	1009	{
1028	dTHX;
1029	struct transfer_args ta;	1010	struct transfer_args ta;
1030		1011
1031	prepare_schedule (&ta);	1012	prepare_schedule (&ta);
1032	TRANSFER (ta);	1013	TRANSFER (ta);
1033	}	1014	}
1034		1015
1035	static void	1016	static void
1036	api_cede (void)	1017	api_cede (void)
1037	{	1018	{
1038	dTHX;
1039	struct transfer_args ta;	1019	struct transfer_args ta;
1040		1020
1041	prepare_cede (&ta);	1021	prepare_cede (&ta);
1042	TRANSFER (ta);	1022	TRANSFER (ta);
1043	}	1023	}
…		…
1075	HV *hv;	1055	HV *hv;
1076	int i;	1056	int i;
1077		1057
1078	Newz (0, coro, 1, struct coro);	1058	Newz (0, coro, 1, struct coro);
1079	coro->args = newAV ();	1059	coro->args = newAV ();
		1060	coro->flags = CF_NEW;
1080		1061
1081	hv = newHV ();	1062	hv = newHV ();
1082	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1063	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1083	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1084		1065
…		…
1092	_set_stacklevel (...)	1073	_set_stacklevel (...)
1093	ALIAS:	1074	ALIAS:
1094	Coro::State::transfer = 1	1075	Coro::State::transfer = 1
1095	Coro::schedule = 2	1076	Coro::schedule = 2
1096	Coro::cede = 3	1077	Coro::cede = 3
1097	Coro::Cont::yield = 4
1098	CODE:	1078	CODE:
1099	{	1079	{
1100	struct transfer_args ta;	1080	struct transfer_args ta;
1101		1081
1102	switch (ix)	1082	switch (ix)
…		…
1107	ta.flags = TRANSFER_SET_STACKLEVEL;	1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1108	break;	1088	break;
1109		1089
1110	case 1:	1090	case 1:
1111	if (items != 3)	1091	if (items != 3)
1112	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1092	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);
1113		1093
1114	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1115	break;	1095	break;
1116		1096
1117	case 2:	1097	case 2:
…		…
1119	break;	1099	break;
1120		1100
1121	case 3:	1101	case 3:
1122	prepare_cede (&ta);	1102	prepare_cede (&ta);
1123	break;	1103	break;
1124
1125	case 4:
1126	{
1127	SV *yieldstack;
1128	SV *sv;
1129	AV *defav = GvAV (PL_defgv);
1130
1131	yieldstack = *hv_fetch (
1132	(HV *)SvRV (GvSV (coro_current)),
1133	"yieldstack", sizeof ("yieldstack") - 1,
1134	0
1135	);
1136
1137	/* set up @_ -- ugly */
1138	av_clear (defav);
1139	av_fill (defav, items - 1);
1140	while (items--)
1141	av_store (defav, items, SvREFCNT_inc (ST(items)));
1142
1143	sv = av_pop ((AV *)SvRV (yieldstack));
1144	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1145	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1146	ta.flags = 0;
1147	SvREFCNT_dec (sv);
1148	}
1149	break;
1150
1151	}	1104	}
1152		1105
1153	TRANSFER (ta);	1106	TRANSFER (ta);
1154	}	1107	}
1155		1108
…		…
1199	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1152	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1200	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1153	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1201	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1154	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1202	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1155	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1203		1156
1204	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1157	coro_current = get_sv ("Coro::current", FALSE);
1205	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1158	SvREADONLY_on (coro_current);
1206		1159
1207	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1160	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1208	coro_ready[i] = newAV ();	1161	coro_ready[i] = newAV ();
1209		1162
1210	{	1163	{
1211	SV *sv = perl_get_sv("Coro::API", 1);	1164	SV *sv = perl_get_sv("Coro::API", 1);
1212		1165
1213	coroapi.schedule = api_schedule;	1166	coroapi.schedule = api_schedule;
1214	coroapi.cede = api_cede;	1167	coroapi.cede = api_cede;
1215	coroapi.ready = api_ready;	1168	coroapi.ready = api_ready;
		1169	coroapi.is_ready = api_is_ready;
1216	coroapi.nready = &coro_nready;	1170	coroapi.nready = &coro_nready;
1217	coroapi.current = coro_current;	1171	coroapi.current = coro_current;
1218		1172
1219	GCoroAPI = &coroapi;	1173	GCoroAPI = &coroapi;
1220	sv_setiv (sv, (IV)&coroapi);	1174	sv_setiv (sv, (IV)&coroapi);
…		…
1240		1194
1241	coro->prio = newprio;	1195	coro->prio = newprio;
1242	}	1196	}
1243	}	1197	}
1244		1198
1245	void	1199	SV *
1246	ready (SV *self)	1200	ready (SV *self)
1247	PROTOTYPE: $	1201	PROTOTYPE: $
1248	CODE:	1202	CODE:
1249	api_ready (self);	1203	RETVAL = boolSV (api_ready (self));
		1204	OUTPUT:
		1205	RETVAL
		1206
		1207	SV *
		1208	is_ready (SV *self)
		1209	PROTOTYPE: $
		1210	CODE:
		1211	RETVAL = boolSV (api_is_ready (self));
		1212	OUTPUT:
		1213	RETVAL
1250		1214
1251	int	1215	int
1252	nready (...)	1216	nready (...)
1253	PROTOTYPE:	1217	PROTOTYPE:
1254	CODE:	1218	CODE:
1255	RETVAL = coro_nready;	1219	RETVAL = coro_nready;
1256	OUTPUT:	1220	OUTPUT:
1257	RETVAL	1221	RETVAL
1258		1222
		1223	void
		1224	_set_current (SV *current)
		1225	PROTOTYPE: $
		1226	CODE:
		1227	SvREFCNT_dec (SvRV (coro_current));
		1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
		1229
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1230	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1231
1261	SV *	1232	SV *
1262	_get_state ()	1233	_get_state ()
1263	CODE:	1234	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs. Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.107 by root, Mon Nov 27 02:15:51 2006 UTC vs.
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC