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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC vs.
Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
124	I32 laststype;	126	I32 laststype;
125	int laststatval;	127	int laststatval;
126	Stat_t statcache;	128	Stat_t statcache;
127	};	129	};
128		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
130	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
		134	static JMPENV *main_top_env;
131	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
132	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
133		137
134	static struct coro_cctx *cctx_first;	138	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	139	static int cctx_count, cctx_idle;
…		…
138	typedef struct coro_cctx {	142	typedef struct coro_cctx {
139	struct coro_cctx *next;	143	struct coro_cctx *next;
140		144
141	/* the stack */	145	/* the stack */
142	void *sptr;	146	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
144		148
145	/* cpu state */	149	/* cpu state */
146	void idle_sp; / sp of top-level transfer/schedule/cede call */	150	void idle_sp; / sp of top-level transfer/schedule/cede call */
147	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	152	JMPENV *top_env;
149	coro_context cctx;	153	coro_context cctx;
150		154
151	int inuse;
152
153	#if CORO_USE_VALGRIND	155	#if CORO_USE_VALGRIND
154	int valgrind_id;	156	int valgrind_id;
155	#endif	157	#endif
		158	char inuse, mapped;
156	} coro_cctx;	159	} coro_cctx;
157		160
158	enum {	161	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
…		…
175		178
176	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
177	AV defav; / @_ */	180	AV defav; / @_ */
178	SV defsv; / $_ */	181	SV defsv; / $_ */
179	SV errsv; / $@ */	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
180	SV irssv; / $/ */	184	SV irssv; / $/ */
181	SV irssv_sv; / real $/ cache */	185	SV irssv_sv; / real $/ cache */
182		186
183	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
184	# include "state.h"	188	# include "state.h"
…		…
206	static int coro_nready;	210	static int coro_nready;
207		211
208	/ lowlevel stuff ********************************************************/	212	/ lowlevel stuff ********************************************************/
209		213
210	static AV *	214	static AV *
211	coro_clone_padlist (CV *cv)	215	coro_clone_padlist (pTHX_ CV *cv)
212	{	216	{
213	AV *padlist = CvPADLIST (cv);	217	AV *padlist = CvPADLIST (cv);
214	AV newpadlist, newpad;	218	AV newpadlist, newpad;
215		219
216	newpadlist = newAV ();	220	newpadlist = newAV ();
…		…
228		232
229	return newpadlist;	233	return newpadlist;
230	}	234	}
231		235
232	static void	236	static void
233	free_padlist (AV *padlist)	237	free_padlist (pTHX_ AV *padlist)
234	{	238	{
235	/* may be during global destruction */	239	/* may be during global destruction */
236	if (SvREFCNT (padlist))	240	if (SvREFCNT (padlist))
237	{	241	{
238	I32 i = AvFILLp (padlist);	242	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	263	AV *padlist;
260	AV av = (AV )mg->mg_obj;	264	AV av = (AV )mg->mg_obj;
261		265
262	/* casting is fun. */	266	/* casting is fun. */
263	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
264	free_padlist (padlist);	268	free_padlist (aTHX_ padlist);
265		269
266	SvREFCNT_dec (av);	270	SvREFCNT_dec (av);
267		271
268	return 0;	272	return 0;
269	}	273	}
…		…
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	284	: 0
281		285
282	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
283	static void	287	static void
284	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
285	{	289	{
286	MAGIC *mg = CORO_MAGIC (cv);	290	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	291	AV *av;
288		292
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
…		…
295	CV *cp = Perl_cv_clone (cv);	299	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	300	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	301	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	302	SvREFCNT_dec (cp);
299	#else	303	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	304	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	305	#endif
302	}	306	}
303	}	307	}
304		308
305	static void	309	static void
306	put_padlist (CV *cv)	310	put_padlist (pTHX_ CV *cv)
307	{	311	{
308	MAGIC *mg = CORO_MAGIC (cv);	312	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	313	AV *av;
310		314
311	if (!mg)	315	if (!mg)
…		…
330	#define SE } while (0)	334	#define SE } while (0)
331		335
332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	336	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333		337
334	static void	338	static void
335	load_perl (Coro__State c)	339	load_perl (pTHX_ Coro__State c)
336	{	340	{
337	#define VAR(name,type) PL_ ## name = c->name;	341	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	342	# include "state.h"
339	#undef VAR	343	#undef VAR
340		344
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	347	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		348	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		349
344	if (c->irssv)	350	if (c->irssv)
345	{	351	{
346	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	352	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		353	{
347	SvREFCNT_dec (c->irssv);	354	SvREFCNT_dec (c->irssv);
		355	c->irssv = 0;
		356	}
348	else	357	else
349	{	358	{
350	REPLACE_SV (PL_rs, c->irssv);	359	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);	361	sv_setsv (c->irssv_sv, PL_rs);
…		…
358	CV *cv;	367	CV *cv;
359		368
360	/* now do the ugly restore mess */	369	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	370	while ((cv = (CV *)POPs))
362	{	371	{
363	put_padlist (cv); /* mark this padlist as available */	372	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	373	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	374	CvPADLIST (cv) = (AV *)POPs;
366	}	375	}
367		376
368	PUTBACK;	377	PUTBACK;
369	}	378	}
370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D	379	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
371	}	380	}
372		381
373	static void	382	static void
374	save_perl (Coro__State c)	383	save_perl (pTHX_ Coro__State c)
375	{	384	{
376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D	385	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
377	{	386	{
378	dSP;	387	dSP;
379	I32 cxix = cxstack_ix;	388	I32 cxix = cxstack_ix;
…		…
404	PUSHs ((SV *)CvPADLIST (cv));	413	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
407		416
408	CvDEPTH (cv) = 0;	417	CvDEPTH (cv) = 0;
409	get_padlist (cv);	418	get_padlist (aTHX_ cv);
410	}	419	}
411	}	420	}
412	}	421	}
413		422
414	if (top_si->si_type == PERLSI_MAIN)	423	if (top_si->si_type == PERLSI_MAIN)
…		…
423	}	432	}
424		433
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	434	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	436	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		437	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	438	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
429		439
430	#define VAR(name,type)c->name = PL_ ## name;	440	#define VAR(name,type)c->name = PL_ ## name;
431	# include "state.h"	441	# include "state.h"
432	#undef VAR	442	#undef VAR
…		…
440	*/	450	*/
441	#if CORO_PREFER_PERL_FUNCTIONS	451	#if CORO_PREFER_PERL_FUNCTIONS
442	# define coro_init_stacks init_stacks	452	# define coro_init_stacks init_stacks
443	#else	453	#else
444	static void	454	static void
445	coro_init_stacks ()	455	coro_init_stacks (pTHX)
446	{	456	{
447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
448	PL_curstackinfo->si_type = PERLSI_MAIN;	458	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	459	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
484		494
485	/*	495	/*
486	* destroy the stacks, the callchain etc...	496	* destroy the stacks, the callchain etc...
487	*/	497	*/
488	static void	498	static void
489	coro_destroy_stacks ()	499	coro_destroy_stacks (pTHX)
490	{	500	{
491	if (!IN_DESTRUCT)	501	if (!IN_DESTRUCT)
492	{	502	{
493	/* restore all saved variables and stuff */	503	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);	504	LEAVE_SCOPE (0);
…		…
530	}	540	}
531		541
532	/ coroutine stack handling **********************************************/	542	/ coroutine stack handling **********************************************/
533		543
534	static void	544	static void
535	setup_coro (struct coro *coro)	545	setup_coro (pTHX_ struct coro *coro)
536	{	546	{
537	/*	547	/*
538	* emulate part of the perl startup here.	548	* emulate part of the perl startup here.
539	*/	549	*/
540
541	coro_init_stacks ();	550	coro_init_stacks (aTHX);
542		551
543	PL_curcop = &PL_compiling;	552	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	553	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	554	PL_comppad = 0;
546	PL_curpm = 0;	555	PL_curpm = 0;
…		…
569		578
570	ENTER; /* necessary e.g. for dounwind */	579	ENTER; /* necessary e.g. for dounwind */
571	}	580	}
572		581
573	static void	582	static void
574	free_coro_mortal ()	583	free_coro_mortal (pTHX)
575	{	584	{
576	if (coro_mortal)	585	if (coro_mortal)
577	{	586	{
578	SvREFCNT_dec (coro_mortal);	587	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	588	coro_mortal = 0;
580	}	589	}
581	}	590	}
582		591
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	592	/* inject a fake call to Coro::State::_cctx_init into the execution */
		593	/* _cctx_init shoukld be careful, as it could be called at almost any time */
		594	/* during execution of a pelr program */
584	static void NOINLINE	595	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	596	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	597	{
587	dSP;	598	dSP;
588	LOGOP myop;	599	LOGOP myop;
589		600
590	Zero (&myop, 1, LOGOP);	601	Zero (&myop, 1, LOGOP);
…		…
599	PL_op = (OP *)&myop;	610	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	611	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	612	SPAGAIN;
602	}	613	}
603		614
		615	/*
		616	* this is a _very_ stripped down perl interpreter ;)
		617	*/
604	static void	618	static void
605	coro_run (void *arg)	619	coro_run (void *arg)
606	{	620	{
		621	dTHX;
		622
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	623	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	624	UNLOCK;
609		625
610	/*
611	* this is a _very_ stripped down perl interpreter ;)
612	*/
613	PL_top_env = &PL_start_env;	626	PL_top_env = &PL_start_env;
614		627
615	/* inject call to cctx_init */	628	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	629	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		630
618	/* somebody will hit me for both perl_run and PL_restartop */	631	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	632	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	633	perl_run (PL_curinterp);
621		634
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	635	/* If perl-run returns we assume exit() was being called, which */
623	abort ();	636	/* seems to be the only valid (non-bug) reason for perl_run to return. */
		637	/* We try to exit by jumping to the bootstrap-time "top" top_env, as */
		638	/* we cannot restore the "main" coroutine as Coro has no such concept */
		639	PL_top_env = main_top_env;
		640	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	641	}
625		642
626	static coro_cctx *	643	static coro_cctx *
627	cctx_new ()	644	cctx_new ()
628	{	645	{
629	coro_cctx *cctx;	646	coro_cctx *cctx;
		647	void *stack_start;
		648	size_t stack_size;
630		649
631	++cctx_count;	650	++cctx_count;
632		651
633	Newz (0, cctx, 1, coro_cctx);	652	Newz (0, cctx, 1, coro_cctx);
634		653
635	#if HAVE_MMAP	654	#if HAVE_MMAP
636		655
637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	656	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	657	/* mmap supposedly does allocate-on-write for us */
639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
640		659
641	if (cctx->sptr != (void *)-1)	660	if (cctx->sptr != (void *)-1)
642	{	661	{
643	# if CORO_STACKGUARD	662	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	663	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	664	# endif
646	REGISTER_STACK (
647	cctx,
648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,	665	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	666	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	667	cctx->mapped = 1;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	668	}
654	else	669	else
655	#endif	670	#endif
656	{	671	{
657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);	672	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, CORO_STACKSIZE, long);	673	New (0, cctx->sptr, coro_stacksize, long);
659		674
660	if (!cctx->sptr)	675	if (!cctx->sptr)
661	{	676	{
662	perror ("FATAL: unable to allocate stack for coroutine");	677	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	678	_exit (EXIT_FAILURE);
664	}	679	}
665		680
666	REGISTER_STACK (	681	stack_start = cctx->sptr;
667	cctx,	682	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	683	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		684
		685	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	686	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		687
675	return cctx;	688	return cctx;
676	}	689	}
677		690
678	static void	691	static void
…		…
686	#if CORO_USE_VALGRIND	699	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	700	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	701	#endif
689		702
690	#if HAVE_MMAP	703	#if HAVE_MMAP
691	if (cctx->ssize > 0)	704	if (cctx->mapped)
692	munmap (cctx->sptr, cctx->ssize);	705	munmap (cctx->sptr, cctx->ssize);
693	else	706	else
694	#endif	707	#endif
695	Safefree (cctx->sptr);	708	Safefree (cctx->sptr);
696		709
697	Safefree (cctx);	710	Safefree (cctx);
698	}	711	}
699		712
700	static coro_cctx *	713	static coro_cctx *
701	cctx_get ()	714	cctx_get (pTHX)
702	{	715	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	716	while (cctx_first)
706	{	717	{
707	cctx = cctx_first;	718	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	719	cctx_first = cctx->next;
709	--cctx_idle;	720	--cctx_idle;
		721
		722	if (cctx->ssize >= coro_stacksize)
		723	return cctx;
		724
		725	cctx_destroy (cctx);
710	}	726	}
711	else	727
712	{
713	cctx = cctx_new ();
714	PL_op = PL_op->op_next;	728	PL_op = PL_op->op_next;
715	}
716
717	return cctx;	729	return cctx_new ();
718	}	730	}
719		731
720	static void	732	static void
721	cctx_put (coro_cctx *cctx)	733	cctx_put (coro_cctx *cctx)
722	{	734	{
…		…
738		750
739	/ coroutine switching ***************************************************/	751	/ coroutine switching ***************************************************/
740		752
741	/* never call directly, always through the coro_state_transfer global variable */	753	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	754	static void NOINLINE
743	transfer (struct coro prev, struct coro next)	755	transfer (pTHX_ struct coro prev, struct coro next)
744	{	756	{
745	dSTACKLEVEL;	757	dSTACKLEVEL;
746		758
747	/* sometimes transfer is only called to set idle_sp */	759	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	760	if (!next)
…		…
781	if (next->flags & CF_NEW)	793	if (next->flags & CF_NEW)
782	{	794	{
783	/* need to start coroutine */	795	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	796	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	797	/* first get rid of the old state */
786	save_perl (prev);	798	save_perl (aTHX_ prev);
787	/* setup coroutine call */	799	/* setup coroutine call */
788	setup_coro (next);	800	setup_coro (aTHX_ next);
789	/* need a new stack */	801	/* need a new stack */
790	assert (!next->cctx);	802	assert (!next->cctx);
791	}	803	}
792	else	804	else
793	{	805	{
794	/* coroutine already started */	806	/* coroutine already started */
795	save_perl (prev);	807	save_perl (aTHX_ prev);
796	load_perl (next);	808	load_perl (aTHX_ next);
797	}	809	}
798		810
799	prev__cctx = prev->cctx;	811	prev__cctx = prev->cctx;
800		812
801	/* possibly "free" the cctx */	813	/* possibly "free" the cctx */
…		…
810	prev__cctx->inuse = 0;	822	prev__cctx->inuse = 0;
811	}	823	}
812		824
813	if (!next->cctx)	825	if (!next->cctx)
814	{	826	{
815	next->cctx = cctx_get ();	827	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);	828	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;	829	next->cctx->inuse = 1;
818	}	830	}
819		831
820	if (prev__cctx != next->cctx)	832	if (prev__cctx != next->cctx)
…		…
822	prev__cctx->top_env = PL_top_env;	834	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	835	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	836	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	837	}
826		838
827	free_coro_mortal ();	839	free_coro_mortal (aTHX);
828	UNLOCK;	840	UNLOCK;
829	}	841	}
830	}	842	}
831		843
832	struct transfer_args	844	struct transfer_args
833	{	845	{
834	struct coro prev, next;	846	struct coro prev, next;
835	};	847	};
836		848
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	849	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
838		850
839	/ high level stuff ******************************************************/	851	/ high level stuff ******************************************************/
840		852
841	static int	853	static int
842	coro_state_destroy (struct coro *coro)	854	coro_state_destroy (pTHX_ struct coro *coro)
843	{	855	{
844	if (coro->flags & CF_DESTROYED)	856	if (coro->flags & CF_DESTROYED)
845	return 0;	857	return 0;
846		858
847	coro->flags \|= CF_DESTROYED;	859	coro->flags \|= CF_DESTROYED;
…		…
862	struct coro temp;	874	struct coro temp;
863		875
864	assert (!(coro->flags & CF_RUNNING));	876	assert (!(coro->flags & CF_RUNNING));
865		877
866	Zero (&temp, 1, struct coro);	878	Zero (&temp, 1, struct coro);
867	temp.save = CORO_SAVE_ALL;	879	temp.save = CORO_SAVE_DEF;
868		880
869	if (coro->flags & CF_RUNNING)	881	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	882	croak ("FATAL: tried to destroy currently running coroutine");
871		883
872	save_perl (&temp);	884	save_perl (aTHX_ &temp);
873	load_perl (coro);	885	load_perl (aTHX_ coro);
874		886
875	coro_destroy_stacks ();	887	coro_destroy_stacks (aTHX);
876		888
877	load_perl (&temp); /* this will get rid of defsv etc.. */	889	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		890
879	coro->mainstack = 0;	891	coro->mainstack = 0;
880	}	892	}
881		893
882	cctx_destroy (coro->cctx);	894	cctx_destroy (coro->cctx);
…		…
891	struct coro coro = (struct coro )mg->mg_ptr;	903	struct coro coro = (struct coro )mg->mg_ptr;
892	mg->mg_ptr = 0;	904	mg->mg_ptr = 0;
893		905
894	if (--coro->refcnt < 0)	906	if (--coro->refcnt < 0)
895	{	907	{
896	coro_state_destroy (coro);	908	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	909	Safefree (coro);
898	}	910	}
899		911
900	return 0;	912	return 0;
901	}	913	}
…		…
920	# define MGf_DUP 0	932	# define MGf_DUP 0
921	#endif	933	#endif
922	};	934	};
923		935
924	static struct coro *	936	static struct coro *
925	SvSTATE (SV *coro)	937	SvSTATE_ (pTHX_ SV *coro)
926	{	938	{
927	HV *stash;	939	HV *stash;
928	MAGIC *mg;	940	MAGIC *mg;
929		941
930	if (SvROK (coro))	942	if (SvROK (coro))
…		…
940		952
941	mg = CORO_MAGIC (coro);	953	mg = CORO_MAGIC (coro);
942	return (struct coro *)mg->mg_ptr;	954	return (struct coro *)mg->mg_ptr;
943	}	955	}
944		956
		957	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		958
945	static void	959	static void
946	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	960	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
947	{	961	{
948	ta->prev = SvSTATE (prev_sv);	962	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	963	ta->next = SvSTATE (next_sv);
950	}	964	}
951		965
952	static void	966	static void
953	api_transfer (SV prev_sv, SV next_sv)	967	api_transfer (SV prev_sv, SV next_sv)
954	{	968	{
		969	dTHX;
955	struct transfer_args ta;	970	struct transfer_args ta;
956		971
957	prepare_transfer (&ta, prev_sv, next_sv);	972	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
958	TRANSFER (ta);	973	TRANSFER (ta);
959	}	974	}
960		975
961	static int	976	static int
962	api_save (SV *coro_sv, int new_save)	977	api_save (SV *coro_sv, int new_save)
963	{	978	{
		979	dTHX;
964	struct coro *coro = SvSTATE (coro_sv);	980	struct coro *coro = SvSTATE (coro_sv);
965	int old_save = coro->save;	981	int old_save = coro->save;
966		982
967	if (new_save >= 0)	983	if (new_save >= 0)
968	coro->save = new_save;	984	coro->save = new_save;
…		…
971	}	987	}
972		988
973	/ Coro ******************************************************************/	989	/ Coro ******************************************************************/
974		990
975	static void	991	static void
976	coro_enq (SV *coro_sv)	992	coro_enq (pTHX_ SV *coro_sv)
977	{	993	{
978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	994	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
979	}	995	}
980		996
981	static SV *	997	static SV *
982	coro_deq (int min_prio)	998	coro_deq (pTHX_ int min_prio)
983	{	999	{
984	int prio = PRIO_MAX - PRIO_MIN;	1000	int prio = PRIO_MAX - PRIO_MIN;
985		1001
986	min_prio -= PRIO_MIN;	1002	min_prio -= PRIO_MIN;
987	if (min_prio < 0)	1003	if (min_prio < 0)
…		…
995	}	1011	}
996		1012
997	static int	1013	static int
998	api_ready (SV *coro_sv)	1014	api_ready (SV *coro_sv)
999	{	1015	{
		1016	dTHX;
1000	struct coro *coro;	1017	struct coro *coro;
1001		1018
1002	if (SvROK (coro_sv))	1019	if (SvROK (coro_sv))
1003	coro_sv = SvRV (coro_sv);	1020	coro_sv = SvRV (coro_sv);
1004		1021
…		…
1008	return 0;	1025	return 0;
1009		1026
1010	coro->flags \|= CF_READY;	1027	coro->flags \|= CF_READY;
1011		1028
1012	LOCK;	1029	LOCK;
1013	coro_enq (SvREFCNT_inc (coro_sv));	1030	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1014	++coro_nready;	1031	++coro_nready;
1015	UNLOCK;	1032	UNLOCK;
1016		1033
1017	return 1;	1034	return 1;
1018	}	1035	}
1019		1036
1020	static int	1037	static int
1021	api_is_ready (SV *coro_sv)	1038	api_is_ready (SV *coro_sv)
1022	{	1039	{
		1040	dTHX;
1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1041	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1024	}	1042	}
1025		1043
1026	static void	1044	static void
1027	prepare_schedule (struct transfer_args *ta)	1045	prepare_schedule (pTHX_ struct transfer_args *ta)
1028	{	1046	{
1029	SV prev_sv, next_sv;	1047	SV prev_sv, next_sv;
1030		1048
1031	for (;;)	1049	for (;;)
1032	{	1050	{
1033	LOCK;	1051	LOCK;
1034	next_sv = coro_deq (PRIO_MIN);	1052	next_sv = coro_deq (aTHX_ PRIO_MIN);
1035		1053
1036	/* nothing to schedule: call the idle handler */	1054	/* nothing to schedule: call the idle handler */
1037	if (!next_sv)	1055	if (!next_sv)
1038	{	1056	{
1039	dSP;	1057	dSP;
…		…
1074		1092
1075	assert (ta->next->flags & CF_READY);	1093	assert (ta->next->flags & CF_READY);
1076	ta->next->flags &= ~CF_READY;	1094	ta->next->flags &= ~CF_READY;
1077		1095
1078	LOCK;	1096	LOCK;
1079	free_coro_mortal ();	1097	free_coro_mortal (aTHX);
1080	coro_mortal = prev_sv;	1098	coro_mortal = prev_sv;
1081	UNLOCK;	1099	UNLOCK;
1082	}	1100	}
1083		1101
1084	static void	1102	static void
1085	prepare_cede (struct transfer_args *ta)	1103	prepare_cede (pTHX_ struct transfer_args *ta)
1086	{	1104	{
1087	api_ready (coro_current);	1105	api_ready (coro_current);
1088	prepare_schedule (ta);	1106	prepare_schedule (aTHX_ ta);
1089	}	1107	}
1090		1108
1091	static int	1109	static int
1092	prepare_cede_notself (struct transfer_args *ta)	1110	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1093	{	1111	{
1094	if (coro_nready)	1112	if (coro_nready)
1095	{	1113	{
1096	SV *prev = SvRV (coro_current);	1114	SV *prev = SvRV (coro_current);
1097	prepare_schedule (ta);	1115	prepare_schedule (aTHX_ ta);
1098	api_ready (prev);	1116	api_ready (prev);
1099	return 1;	1117	return 1;
1100	}	1118	}
1101	else	1119	else
1102	return 0;	1120	return 0;
1103	}	1121	}
1104		1122
1105	static void	1123	static void
1106	api_schedule (void)	1124	api_schedule (void)
1107	{	1125	{
		1126	dTHX;
1108	struct transfer_args ta;	1127	struct transfer_args ta;
1109		1128
1110	prepare_schedule (&ta);	1129	prepare_schedule (aTHX_ &ta);
1111	TRANSFER (ta);	1130	TRANSFER (ta);
1112	}	1131	}
1113		1132
1114	static int	1133	static int
1115	api_cede (void)	1134	api_cede (void)
1116	{	1135	{
		1136	dTHX;
1117	struct transfer_args ta;	1137	struct transfer_args ta;
1118		1138
1119	prepare_cede (&ta);	1139	prepare_cede (aTHX_ &ta);
1120		1140
1121	if (ta.prev != ta.next)	1141	if (ta.prev != ta.next)
1122	{	1142	{
1123	TRANSFER (ta);	1143	TRANSFER (ta);
1124	return 1;	1144	return 1;
…		…
1128	}	1148	}
1129		1149
1130	static int	1150	static int
1131	api_cede_notself (void)	1151	api_cede_notself (void)
1132	{	1152	{
		1153	dTHX;
1133	struct transfer_args ta;	1154	struct transfer_args ta;
1134		1155
1135	if (prepare_cede_notself (&ta))	1156	if (prepare_cede_notself (aTHX_ &ta))
1136	{	1157	{
1137	TRANSFER (ta);	1158	TRANSFER (ta);
1138	return 1;	1159	return 1;
1139	}	1160	}
1140	else	1161	else
…		…
1156		1177
1157	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1178	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1158	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1179	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1159	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1180	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1160	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1181	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1182	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1183	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1161	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1184	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1162		1185
1163	main_mainstack = PL_mainstack;	1186	main_mainstack = PL_mainstack;
		1187	main_top_env = PL_top_env;
		1188
		1189	while (main_top_env->je_prev)
		1190	main_top_env = main_top_env->je_prev;
1164		1191
1165	coroapi.ver = CORO_API_VERSION;	1192	coroapi.ver = CORO_API_VERSION;
1166	coroapi.transfer = api_transfer;	1193	coroapi.transfer = api_transfer;
1167		1194
1168	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1195	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1176	HV *hv;	1203	HV *hv;
1177	int i;	1204	int i;
1178		1205
1179	Newz (0, coro, 1, struct coro);	1206	Newz (0, coro, 1, struct coro);
1180	coro->args = newAV ();	1207	coro->args = newAV ();
1181	coro->save = CORO_SAVE_ALL;	1208	coro->save = CORO_SAVE_DEF;
1182	coro->flags = CF_NEW;	1209	coro->flags = CF_NEW;
1183		1210
1184	hv = newHV ();	1211	hv = newHV ();
1185	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1212	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1186	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1213	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1193		1220
1194	int	1221	int
1195	save (SV *coro, int new_save = -1)	1222	save (SV *coro, int new_save = -1)
1196	CODE:	1223	CODE:
1197	RETVAL = api_save (coro, new_save);	1224	RETVAL = api_save (coro, new_save);
		1225	OUTPUT:
		1226	RETVAL
		1227
		1228	int
		1229	save_also (SV *coro_sv, int save_also)
		1230	CODE:
		1231	{
		1232	struct coro *coro = SvSTATE (coro_sv);
		1233	RETVAL = coro->save;
		1234	coro->save \|= save_also;
		1235	}
1198	OUTPUT:	1236	OUTPUT:
1199	RETVAL	1237	RETVAL
1200		1238
1201	void	1239	void
1202	_set_stacklevel (...)	1240	_set_stacklevel (...)
…		…
1218		1256
1219	case 1:	1257	case 1:
1220	if (items != 2)	1258	if (items != 2)
1221	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1259	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1222		1260
1223	prepare_transfer (&ta, ST (0), ST (1));	1261	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1224	break;	1262	break;
1225		1263
1226	case 2:	1264	case 2:
1227	prepare_schedule (&ta);	1265	prepare_schedule (aTHX_ &ta);
1228	break;	1266	break;
1229		1267
1230	case 3:	1268	case 3:
1231	prepare_cede (&ta);	1269	prepare_cede (aTHX_ &ta);
1232	break;	1270	break;
1233		1271
1234	case 4:	1272	case 4:
1235	if (!prepare_cede_notself (&ta))	1273	if (!prepare_cede_notself (aTHX_ &ta))
1236	XSRETURN_EMPTY;	1274	XSRETURN_EMPTY;
1237		1275
1238	break;	1276	break;
1239	}	1277	}
1240		1278
…		…
1246	}	1284	}
1247		1285
1248	bool	1286	bool
1249	_destroy (SV *coro_sv)	1287	_destroy (SV *coro_sv)
1250	CODE:	1288	CODE:
1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1289	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1252	OUTPUT:	1290	OUTPUT:
1253	RETVAL	1291	RETVAL
1254		1292
1255	void	1293	void
1256	_exit (code)	1294	_exit (code)
1257	int code	1295	int code
1258	PROTOTYPE: $	1296	PROTOTYPE: $
1259	CODE:	1297	CODE:
1260	_exit (code);	1298	_exit (code);
		1299
		1300	int
		1301	cctx_stacksize (int new_stacksize = 0)
		1302	CODE:
		1303	RETVAL = coro_stacksize;
		1304	if (new_stacksize)
		1305	coro_stacksize = new_stacksize;
		1306	OUTPUT:
		1307	RETVAL
1261		1308
1262	int	1309	int
1263	cctx_count ()	1310	cctx_count ()
1264	CODE:	1311	CODE:
1265	RETVAL = cctx_count;	1312	RETVAL = cctx_count;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC vs. Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC vs.
Revision 1.148 by root, Fri Apr 13 12:56:55 2007 UTC