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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC vs.
Revision 1.150 by root, Wed Jun 13 21:04:48 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;
…		…
558	Zero (&myop, 1, LOGOP);	567	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	568	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	569	myop.op_flags = OPf_WANT_VOID;
561		570
562	PUSHMARK (SP);	571	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	572	XPUSHs (av_shift (GvAV (PL_defgv)));
564	PUTBACK;	573	PUTBACK;
565	PL_op = (OP *)&myop;	574	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	575	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	576	SPAGAIN;
568	}	577	}
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 should be careful, as it could be called at almost any time */
		594	/* during execution of a perl 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	/*
623	abort ();	636	* If perl-run returns we assume exit() was being called or the coro
		637	* fell off the end, which seems to be the only valid (non-bug)
		638	* reason for perl_run to return. We try to exit by jumping to the
		639	* bootstrap-time "top" top_env, as we cannot restore the "main"
		640	* coroutine as Coro has no such concept
		641	*/
		642	PL_top_env = main_top_env;
		643	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	644	}
625		645
626	static coro_cctx *	646	static coro_cctx *
627	cctx_new ()	647	cctx_new ()
628	{	648	{
629	coro_cctx *cctx;	649	coro_cctx *cctx;
		650	void *stack_start;
		651	size_t stack_size;
630		652
631	++cctx_count;	653	++cctx_count;
632		654
633	Newz (0, cctx, 1, coro_cctx);	655	Newz (0, cctx, 1, coro_cctx);
634		656
635	#if HAVE_MMAP	657	#if HAVE_MMAP
636		658
637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	659	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	660	/* 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);	661	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
640		662
641	if (cctx->sptr != (void *)-1)	663	if (cctx->sptr != (void *)-1)
642	{	664	{
643	# if CORO_STACKGUARD	665	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	666	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	667	# endif
646	REGISTER_STACK (
647	cctx,
648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,	668	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	669	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	670	cctx->mapped = 1;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	671	}
654	else	672	else
655	#endif	673	#endif
656	{	674	{
657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);	675	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, CORO_STACKSIZE, long);	676	New (0, cctx->sptr, coro_stacksize, long);
659		677
660	if (!cctx->sptr)	678	if (!cctx->sptr)
661	{	679	{
662	perror ("FATAL: unable to allocate stack for coroutine");	680	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	681	_exit (EXIT_FAILURE);
664	}	682	}
665		683
666	REGISTER_STACK (	684	stack_start = cctx->sptr;
667	cctx,	685	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	686	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		687
		688	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	689	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		690
675	return cctx;	691	return cctx;
676	}	692	}
677		693
678	static void	694	static void
…		…
686	#if CORO_USE_VALGRIND	702	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	703	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	704	#endif
689		705
690	#if HAVE_MMAP	706	#if HAVE_MMAP
691	if (cctx->ssize > 0)	707	if (cctx->mapped)
692	munmap (cctx->sptr, cctx->ssize);	708	munmap (cctx->sptr, cctx->ssize);
693	else	709	else
694	#endif	710	#endif
695	Safefree (cctx->sptr);	711	Safefree (cctx->sptr);
696		712
697	Safefree (cctx);	713	Safefree (cctx);
698	}	714	}
699		715
700	static coro_cctx *	716	static coro_cctx *
701	cctx_get ()	717	cctx_get (pTHX)
702	{	718	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	719	while (cctx_first)
706	{	720	{
707	cctx = cctx_first;	721	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	722	cctx_first = cctx->next;
709	--cctx_idle;	723	--cctx_idle;
		724
		725	if (cctx->ssize >= coro_stacksize)
		726	return cctx;
		727
		728	cctx_destroy (cctx);
710	}	729	}
711	else	730
712	{
713	cctx = cctx_new ();
714	PL_op = PL_op->op_next;	731	PL_op = PL_op->op_next;
715	}
716
717	return cctx;	732	return cctx_new ();
718	}	733	}
719		734
720	static void	735	static void
721	cctx_put (coro_cctx *cctx)	736	cctx_put (coro_cctx *cctx)
722	{	737	{
…		…
738		753
739	/ coroutine switching ***************************************************/	754	/ coroutine switching ***************************************************/
740		755
741	/* never call directly, always through the coro_state_transfer global variable */	756	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	757	static void NOINLINE
743	transfer (struct coro prev, struct coro next)	758	transfer (pTHX_ struct coro prev, struct coro next)
744	{	759	{
745	dSTACKLEVEL;	760	dSTACKLEVEL;
746		761
747	/* sometimes transfer is only called to set idle_sp */	762	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	763	if (!next)
…		…
781	if (next->flags & CF_NEW)	796	if (next->flags & CF_NEW)
782	{	797	{
783	/* need to start coroutine */	798	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	799	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	800	/* first get rid of the old state */
786	save_perl (prev);	801	save_perl (aTHX_ prev);
787	/* setup coroutine call */	802	/* setup coroutine call */
788	setup_coro (next);	803	setup_coro (aTHX_ next);
789	/* need a new stack */	804	/* need a new stack */
790	assert (!next->cctx);	805	assert (!next->cctx);
791	}	806	}
792	else	807	else
793	{	808	{
794	/* coroutine already started */	809	/* coroutine already started */
795	save_perl (prev);	810	save_perl (aTHX_ prev);
796	load_perl (next);	811	load_perl (aTHX_ next);
797	}	812	}
798		813
799	prev__cctx = prev->cctx;	814	prev__cctx = prev->cctx;
800		815
801	/* possibly "free" the cctx */	816	/* possibly "free" the cctx */
…		…
810	prev__cctx->inuse = 0;	825	prev__cctx->inuse = 0;
811	}	826	}
812		827
813	if (!next->cctx)	828	if (!next->cctx)
814	{	829	{
815	next->cctx = cctx_get ();	830	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);	831	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;	832	next->cctx->inuse = 1;
818	}	833	}
819		834
820	if (prev__cctx != next->cctx)	835	if (prev__cctx != next->cctx)
…		…
822	prev__cctx->top_env = PL_top_env;	837	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	838	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	839	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	840	}
826		841
827	free_coro_mortal ();	842	free_coro_mortal (aTHX);
828	UNLOCK;	843	UNLOCK;
829	}	844	}
830	}	845	}
831		846
832	struct transfer_args	847	struct transfer_args
833	{	848	{
834	struct coro prev, next;	849	struct coro prev, next;
835	};	850	};
836		851
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	852	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
838		853
839	/ high level stuff ******************************************************/	854	/ high level stuff ******************************************************/
840		855
841	static int	856	static int
842	coro_state_destroy (struct coro *coro)	857	coro_state_destroy (pTHX_ struct coro *coro)
843	{	858	{
844	if (coro->flags & CF_DESTROYED)	859	if (coro->flags & CF_DESTROYED)
845	return 0;	860	return 0;
846		861
847	coro->flags \|= CF_DESTROYED;	862	coro->flags \|= CF_DESTROYED;
…		…
862	struct coro temp;	877	struct coro temp;
863		878
864	assert (!(coro->flags & CF_RUNNING));	879	assert (!(coro->flags & CF_RUNNING));
865		880
866	Zero (&temp, 1, struct coro);	881	Zero (&temp, 1, struct coro);
867	temp.save = CORO_SAVE_ALL;	882	temp.save = CORO_SAVE_DEF;
868		883
869	if (coro->flags & CF_RUNNING)	884	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	885	croak ("FATAL: tried to destroy currently running coroutine");
871		886
872	save_perl (&temp);	887	save_perl (aTHX_ &temp);
873	load_perl (coro);	888	load_perl (aTHX_ coro);
874		889
875	coro_destroy_stacks ();	890	coro_destroy_stacks (aTHX);
876		891
877	load_perl (&temp); /* this will get rid of defsv etc.. */	892	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		893
879	coro->mainstack = 0;	894	coro->mainstack = 0;
880	}	895	}
881		896
882	cctx_destroy (coro->cctx);	897	cctx_destroy (coro->cctx);
…		…
891	struct coro coro = (struct coro )mg->mg_ptr;	906	struct coro coro = (struct coro )mg->mg_ptr;
892	mg->mg_ptr = 0;	907	mg->mg_ptr = 0;
893		908
894	if (--coro->refcnt < 0)	909	if (--coro->refcnt < 0)
895	{	910	{
896	coro_state_destroy (coro);	911	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	912	Safefree (coro);
898	}	913	}
899		914
900	return 0;	915	return 0;
901	}	916	}
…		…
920	# define MGf_DUP 0	935	# define MGf_DUP 0
921	#endif	936	#endif
922	};	937	};
923		938
924	static struct coro *	939	static struct coro *
925	SvSTATE (SV *coro)	940	SvSTATE_ (pTHX_ SV *coro)
926	{	941	{
927	HV *stash;	942	HV *stash;
928	MAGIC *mg;	943	MAGIC *mg;
929		944
930	if (SvROK (coro))	945	if (SvROK (coro))
…		…
936	/* very slow, but rare, check */	951	/* very slow, but rare, check */
937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	952	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
938	croak ("Coro::State object required");	953	croak ("Coro::State object required");
939	}	954	}
940		955
941	mg = SvMAGIC (coro);	956	mg = CORO_MAGIC (coro);
942	assert (mg->mg_type == PERL_MAGIC_ext);
943	return (struct coro *)mg->mg_ptr;	957	return (struct coro *)mg->mg_ptr;
944	}	958	}
945		959
		960	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		961
946	static void	962	static void
947	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	963	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
948	{	964	{
949	ta->prev = SvSTATE (prev_sv);	965	ta->prev = SvSTATE (prev_sv);
950	ta->next = SvSTATE (next_sv);	966	ta->next = SvSTATE (next_sv);
951	}	967	}
952		968
953	static void	969	static void
954	api_transfer (SV prev_sv, SV next_sv)	970	api_transfer (SV prev_sv, SV next_sv)
955	{	971	{
		972	dTHX;
956	struct transfer_args ta;	973	struct transfer_args ta;
957		974
958	prepare_transfer (&ta, prev_sv, next_sv);	975	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
959	TRANSFER (ta);	976	TRANSFER (ta);
960	}	977	}
961		978
962	static int	979	static int
963	api_save (SV *coro_sv, int new_save)	980	api_save (SV *coro_sv, int new_save)
964	{	981	{
		982	dTHX;
965	struct coro *coro = SvSTATE (coro_sv);	983	struct coro *coro = SvSTATE (coro_sv);
966	int old_save = coro->save;	984	int old_save = coro->save;
967		985
968	if (new_save >= 0)	986	if (new_save >= 0)
969	coro->save = new_save;	987	coro->save = new_save;
…		…
972	}	990	}
973		991
974	/ Coro ******************************************************************/	992	/ Coro ******************************************************************/
975		993
976	static void	994	static void
977	coro_enq (SV *coro_sv)	995	coro_enq (pTHX_ SV *coro_sv)
978	{	996	{
979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	997	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
980	}	998	}
981		999
982	static SV *	1000	static SV *
983	coro_deq (int min_prio)	1001	coro_deq (pTHX_ int min_prio)
984	{	1002	{
985	int prio = PRIO_MAX - PRIO_MIN;	1003	int prio = PRIO_MAX - PRIO_MIN;
986		1004
987	min_prio -= PRIO_MIN;	1005	min_prio -= PRIO_MIN;
988	if (min_prio < 0)	1006	if (min_prio < 0)
…		…
996	}	1014	}
997		1015
998	static int	1016	static int
999	api_ready (SV *coro_sv)	1017	api_ready (SV *coro_sv)
1000	{	1018	{
		1019	dTHX;
1001	struct coro *coro;	1020	struct coro *coro;
1002		1021
1003	if (SvROK (coro_sv))	1022	if (SvROK (coro_sv))
1004	coro_sv = SvRV (coro_sv);	1023	coro_sv = SvRV (coro_sv);
1005		1024
…		…
1009	return 0;	1028	return 0;
1010		1029
1011	coro->flags \|= CF_READY;	1030	coro->flags \|= CF_READY;
1012		1031
1013	LOCK;	1032	LOCK;
1014	coro_enq (SvREFCNT_inc (coro_sv));	1033	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1015	++coro_nready;	1034	++coro_nready;
1016	UNLOCK;	1035	UNLOCK;
1017		1036
1018	return 1;	1037	return 1;
1019	}	1038	}
1020		1039
1021	static int	1040	static int
1022	api_is_ready (SV *coro_sv)	1041	api_is_ready (SV *coro_sv)
1023	{	1042	{
		1043	dTHX;
1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1044	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1025	}	1045	}
1026		1046
1027	static void	1047	static void
1028	prepare_schedule (struct transfer_args *ta)	1048	prepare_schedule (pTHX_ struct transfer_args *ta)
1029	{	1049	{
1030	SV prev_sv, next_sv;	1050	SV prev_sv, next_sv;
1031		1051
1032	for (;;)	1052	for (;;)
1033	{	1053	{
1034	LOCK;	1054	LOCK;
1035	next_sv = coro_deq (PRIO_MIN);	1055	next_sv = coro_deq (aTHX_ PRIO_MIN);
1036		1056
1037	/* nothing to schedule: call the idle handler */	1057	/* nothing to schedule: call the idle handler */
1038	if (!next_sv)	1058	if (!next_sv)
1039	{	1059	{
1040	dSP;	1060	dSP;
…		…
1075		1095
1076	assert (ta->next->flags & CF_READY);	1096	assert (ta->next->flags & CF_READY);
1077	ta->next->flags &= ~CF_READY;	1097	ta->next->flags &= ~CF_READY;
1078		1098
1079	LOCK;	1099	LOCK;
1080	free_coro_mortal ();	1100	free_coro_mortal (aTHX);
1081	coro_mortal = prev_sv;	1101	coro_mortal = prev_sv;
1082	UNLOCK;	1102	UNLOCK;
1083	}	1103	}
1084		1104
1085	static void	1105	static void
1086	prepare_cede (struct transfer_args *ta)	1106	prepare_cede (pTHX_ struct transfer_args *ta)
1087	{	1107	{
1088	api_ready (coro_current);	1108	api_ready (coro_current);
1089	prepare_schedule (ta);	1109	prepare_schedule (aTHX_ ta);
1090	}	1110	}
1091		1111
1092	static int	1112	static int
1093	prepare_cede_notself (struct transfer_args *ta)	1113	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1094	{	1114	{
1095	if (coro_nready)	1115	if (coro_nready)
1096	{	1116	{
1097	SV *prev = SvRV (coro_current);	1117	SV *prev = SvRV (coro_current);
1098	prepare_schedule (ta);	1118	prepare_schedule (aTHX_ ta);
1099	api_ready (prev);	1119	api_ready (prev);
1100	return 1;	1120	return 1;
1101	}	1121	}
1102	else	1122	else
1103	return 0;	1123	return 0;
1104	}	1124	}
1105		1125
1106	static void	1126	static void
1107	api_schedule (void)	1127	api_schedule (void)
1108	{	1128	{
		1129	dTHX;
1109	struct transfer_args ta;	1130	struct transfer_args ta;
1110		1131
1111	prepare_schedule (&ta);	1132	prepare_schedule (aTHX_ &ta);
1112	TRANSFER (ta);	1133	TRANSFER (ta);
1113	}	1134	}
1114		1135
1115	static int	1136	static int
1116	api_cede (void)	1137	api_cede (void)
1117	{	1138	{
		1139	dTHX;
1118	struct transfer_args ta;	1140	struct transfer_args ta;
1119		1141
1120	prepare_cede (&ta);	1142	prepare_cede (aTHX_ &ta);
1121		1143
1122	if (ta.prev != ta.next)	1144	if (ta.prev != ta.next)
1123	{	1145	{
1124	TRANSFER (ta);	1146	TRANSFER (ta);
1125	return 1;	1147	return 1;
…		…
1129	}	1151	}
1130		1152
1131	static int	1153	static int
1132	api_cede_notself (void)	1154	api_cede_notself (void)
1133	{	1155	{
		1156	dTHX;
1134	struct transfer_args ta;	1157	struct transfer_args ta;
1135		1158
1136	if (prepare_cede_notself (&ta))	1159	if (prepare_cede_notself (aTHX_ &ta))
1137	{	1160	{
1138	TRANSFER (ta);	1161	TRANSFER (ta);
1139	return 1;	1162	return 1;
1140	}	1163	}
1141	else	1164	else
…		…
1157		1180
1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1181	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1182	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1160	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1183	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1161	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1184	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1185	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1186	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1162	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1187	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1163		1188
1164	main_mainstack = PL_mainstack;	1189	main_mainstack = PL_mainstack;
		1190	main_top_env = PL_top_env;
		1191
		1192	while (main_top_env->je_prev)
		1193	main_top_env = main_top_env->je_prev;
1165		1194
1166	coroapi.ver = CORO_API_VERSION;	1195	coroapi.ver = CORO_API_VERSION;
1167	coroapi.transfer = api_transfer;	1196	coroapi.transfer = api_transfer;
1168		1197
1169	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1198	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1177	HV *hv;	1206	HV *hv;
1178	int i;	1207	int i;
1179		1208
1180	Newz (0, coro, 1, struct coro);	1209	Newz (0, coro, 1, struct coro);
1181	coro->args = newAV ();	1210	coro->args = newAV ();
1182	coro->save = CORO_SAVE_ALL;	1211	coro->save = CORO_SAVE_DEF;
1183	coro->flags = CF_NEW;	1212	coro->flags = CF_NEW;
1184		1213
1185	hv = newHV ();	1214	hv = newHV ();
1186	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1215	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1216	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1194		1223
1195	int	1224	int
1196	save (SV *coro, int new_save = -1)	1225	save (SV *coro, int new_save = -1)
1197	CODE:	1226	CODE:
1198	RETVAL = api_save (coro, new_save);	1227	RETVAL = api_save (coro, new_save);
		1228	OUTPUT:
		1229	RETVAL
		1230
		1231	int
		1232	save_also (SV *coro_sv, int save_also)
		1233	CODE:
		1234	{
		1235	struct coro *coro = SvSTATE (coro_sv);
		1236	RETVAL = coro->save;
		1237	coro->save \|= save_also;
		1238	}
1199	OUTPUT:	1239	OUTPUT:
1200	RETVAL	1240	RETVAL
1201		1241
1202	void	1242	void
1203	_set_stacklevel (...)	1243	_set_stacklevel (...)
…		…
1219		1259
1220	case 1:	1260	case 1:
1221	if (items != 2)	1261	if (items != 2)
1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1262	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1223		1263
1224	prepare_transfer (&ta, ST (0), ST (1));	1264	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1225	break;	1265	break;
1226		1266
1227	case 2:	1267	case 2:
1228	prepare_schedule (&ta);	1268	prepare_schedule (aTHX_ &ta);
1229	break;	1269	break;
1230		1270
1231	case 3:	1271	case 3:
1232	prepare_cede (&ta);	1272	prepare_cede (aTHX_ &ta);
1233	break;	1273	break;
1234		1274
1235	case 4:	1275	case 4:
1236	if (!prepare_cede_notself (&ta))	1276	if (!prepare_cede_notself (aTHX_ &ta))
1237	XSRETURN_EMPTY;	1277	XSRETURN_EMPTY;
1238		1278
1239	break;	1279	break;
1240	}	1280	}
1241		1281
…		…
1247	}	1287	}
1248		1288
1249	bool	1289	bool
1250	_destroy (SV *coro_sv)	1290	_destroy (SV *coro_sv)
1251	CODE:	1291	CODE:
1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1292	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1253	OUTPUT:	1293	OUTPUT:
1254	RETVAL	1294	RETVAL
1255		1295
1256	void	1296	void
1257	_exit (code)	1297	_exit (code)
1258	int code	1298	int code
1259	PROTOTYPE: $	1299	PROTOTYPE: $
1260	CODE:	1300	CODE:
1261	_exit (code);	1301	_exit (code);
		1302
		1303	int
		1304	cctx_stacksize (int new_stacksize = 0)
		1305	CODE:
		1306	RETVAL = coro_stacksize;
		1307	if (new_stacksize)
		1308	coro_stacksize = new_stacksize;
		1309	OUTPUT:
		1310	RETVAL
1262		1311
1263	int	1312	int
1264	cctx_count ()	1313	cctx_count ()
1265	CODE:	1314	CODE:
1266	RETVAL = cctx_count;	1315	RETVAL = cctx_count;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC vs. Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.143 by root, Wed Feb 28 11:43:03 2007 UTC vs.
Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC