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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs.
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC

…		…
31	#else	31	#else
32	# define PAGESIZE 0	32	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
34	#endif	34	#endif
35		35
36	#if USE_VALGRIND	36	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	37	# include <valgrind/valgrind.h>
		38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		39	#else
		40	# define REGISTER_STACK(cctx,start,end)
38	#endif	41	#endif
39		42
40	/* the maximum number of idle cctx that will be pooled */	43	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	44	#define MAX_IDLE_CCTX 8
42		45
…		…
71	#ifndef SvRV_set	74	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	75	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	76	#endif
74		77
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	79	# undef CORO_STACKGUARD
77	#endif	80	#endif
78		81
79	#ifndef STACKGUARD	82	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	83	# define CORO_STACKGUARD 0
81	#endif	84	#endif
82		85
83	/* prefer perl internal functions over our own? */	86	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	87	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	88	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	89	#endif
87		90
88	/* The next macro should declare a variable stacklevel that contains and approximation	91	/* The next macro should declare a variable stacklevel that contains and approximation
89	* to the current C stack pointer. Its property is that it changes with each call	92	* to the current C stack pointer. Its property is that it changes with each call
90	* and should be unique. */	93	* and should be unique. */
…		…
112	#else	115	#else
113	# define LOCK (void)0	116	# define LOCK (void)0
114	# define UNLOCK (void)0	117	# define UNLOCK (void)0
115	#endif	118	#endif
116		119
		120	/* helper storage struct for Coro::AIO */
117	struct io_state	121	struct io_state
118	{	122	{
119	int errorno;	123	int errorno;
120	I32 laststype;	124	I32 laststype;
121	int laststatval;	125	int laststatval;
…		…
134	typedef struct coro_cctx {	138	typedef struct coro_cctx {
135	struct coro_cctx *next;	139	struct coro_cctx *next;
136		140
137	/* the stack */	141	/* the stack */
138	void *sptr;	142	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
140		144
141	/* cpu state */	145	/* cpu state */
142	void idle_sp; / sp of top-level transfer/schedule/cede call */	146	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 */
143	JMPENV *top_env;	148	JMPENV *top_env;
144	coro_context cctx;	149	coro_context cctx;
145		150
146	int inuse;	151	int inuse;
147		152
148	#if USE_VALGRIND	153	#if CORO_USE_VALGRIND
149	int valgrind_id;	154	int valgrind_id;
150	#endif	155	#endif
151	} coro_cctx;	156	} coro_cctx;
152		157
153	enum {	158	enum {
154	CF_RUNNING = 0x0001, /* coroutine is running */	159	CF_RUNNING = 0x0001, /* coroutine is running */
155	CF_READY = 0x0002, /* coroutine is ready */	160	CF_READY = 0x0002, /* coroutine is ready */
156	CF_NEW = 0x0004, /* ahs never been switched to */	161	CF_NEW = 0x0004, /* has never been switched to */
		162	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
157	};	163	};
158		164
159	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
160	struct coro {	166	struct coro {
161	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
…		…
183	};	189	};
184		190
185	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
186	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
187		193
		194	/ Coro ******************************************************************/
		195
		196	#define PRIO_MAX 3
		197	#define PRIO_HIGH 1
		198	#define PRIO_NORMAL 0
		199	#define PRIO_LOW -1
		200	#define PRIO_IDLE -3
		201	#define PRIO_MIN -4
		202
		203	/* for Coro.pm */
		204	static SV *coro_current;
		205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		206	static int coro_nready;
		207
		208	/ lowlevel stuff ********************************************************/
		209
188	static AV *	210	static AV *
189	coro_clone_padlist (CV *cv)	211	coro_clone_padlist (CV *cv)
190	{	212	{
191	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
192	AV newpadlist, newpad;	214	AV newpadlist, newpad;
…		…
266		288
267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
269	else	291	else
270	{	292	{
271	#if PREFER_PERL_FUNCTIONS	293	#if CORO_PREFER_PERL_FUNCTIONS
272	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
273	CV *cp = Perl_cv_clone (cv);	295	CV *cp = Perl_cv_clone (cv);
274	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
275	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
276	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
…		…
299	if (AvFILLp (av) >= AvMAX (av))	321	if (AvFILLp (av) >= AvMAX (av))
300	av_extend (av, AvMAX (av) + 1);	322	av_extend (av, AvMAX (av) + 1);
301		323
302	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
303	}	325	}
		326
		327	/ load & save, init *****************************************************/
304		328
305	#define SB do {	329	#define SB do {
306	#define SE } while (0)	330	#define SE } while (0)
307		331
308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
…		…
341	CvPADLIST (cv) = (AV *)POPs;	365	CvPADLIST (cv) = (AV *)POPs;
342	}	366	}
343		367
344	PUTBACK;	368	PUTBACK;
345	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
346	}	371	}
347		372
348	static void	373	static void
349	save_perl (Coro__State c)	374	save_perl (Coro__State c)
350	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
351	{	377	{
352	dSP;	378	dSP;
353	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
354	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
355	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
410	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
411	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
412	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
413	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
414	*/	440	*/
415	#if PREFER_PERL_FUNCTIONS	441	#if CORO_PREFER_PERL_FUNCTIONS
416	# define coro_init_stacks init_stacks	442	# define coro_init_stacks init_stacks
417	#else	443	#else
418	static void	444	static void
419	coro_init_stacks ()	445	coro_init_stacks ()
420	{	446	{
…		…
470		496
471	/* free all temporaries */	497	/* free all temporaries */
472	FREETMPS;	498	FREETMPS;
473	assert (PL_tmps_ix == -1);	499	assert (PL_tmps_ix == -1);
474		500
		501	/* unwind all extra stacks */
475	POPSTACK_TO (PL_mainstack);	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
476	}	506	}
477		507
478	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
479	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
480		510
…		…
497	#if !PERL_VERSION_ATLEAST (5,9,0)	527	#if !PERL_VERSION_ATLEAST (5,9,0)
498	Safefree (PL_retstack);	528	Safefree (PL_retstack);
499	#endif	529	#endif
500	}	530	}
501		531
		532	/ coroutine stack handling **********************************************/
		533
502	static void	534	static void
503	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
504	{	536	{
505	/*	537	/*
506	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
…		…
508		540
509	coro_init_stacks ();	541	coro_init_stacks ();
510		542
511	PL_curcop = &PL_compiling;	543	PL_curcop = &PL_compiling;
512	PL_in_eval = EVAL_NULL;	544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
513	PL_curpm = 0;	546	PL_curpm = 0;
514	PL_localizing = 0;	547	PL_localizing = 0;
515	PL_dirty = 0;	548	PL_dirty = 0;
516	PL_restartop = 0;	549	PL_restartop = 0;
517		550
…		…
599		632
600	Newz (0, cctx, 1, coro_cctx);	633	Newz (0, cctx, 1, coro_cctx);
601		634
602	#if HAVE_MMAP	635	#if HAVE_MMAP
603		636
604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
605	/* mmap supposedly does allocate-on-write for us */	638	/* mmap supposedly does allocate-on-write for us */
606	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
607		640
608	if (cctx->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
609	{
610	perror ("FATAL: unable to mmap stack for coroutine");
611	_exit (EXIT_FAILURE);
612	}	642	{
613
614	# if STACKGUARD	643	# if CORO_STACKGUARD
615	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
616	# endif	645	# endif
617		646	REGISTER_STACK (
618	#else	647	cctx,
619
620	cctx->ssize = STACKSIZE * (long)sizeof (long);
621	New (0, cctx->sptr, STACKSIZE, long);
622
623	if (!cctx->sptr)
624	{
625	perror ("FATAL: unable to malloc stack for coroutine");
626	_exit (EXIT_FAILURE);
627	}
628
629	#endif
630
631	#if USE_VALGRIND
632	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
633	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,
634	cctx->ssize + (char *)cctx->sptr	649	cctx->ssize + (char *)cctx->sptr
635	);	650	);
636	#endif
637		651
638	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		653	}
		654	else
		655	#endif
		656	{
		657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, CORO_STACKSIZE, long);
		659
		660	if (!cctx->sptr)
		661	{
		662	perror ("FATAL: unable to allocate stack for coroutine");
		663	_exit (EXIT_FAILURE);
		664	}
		665
		666	REGISTER_STACK (
		667	cctx,
		668	(char *)cctx->sptr,
		669	(char *)cctx->sptr - cctx->ssize
		670	);
		671
		672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
		673	}
639		674
640	return cctx;	675	return cctx;
641	}	676	}
642		677
643	static void	678	static void
…		…
646	if (!cctx)	681	if (!cctx)
647	return;	682	return;
648		683
649	--cctx_count;	684	--cctx_count;
650		685
651	#if USE_VALGRIND	686	#if CORO_USE_VALGRIND
652	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
653	#endif	688	#endif
654		689
655	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
656	munmap (cctx->sptr, cctx->ssize);	692	munmap (cctx->sptr, cctx->ssize);
657	#else	693	else
		694	#endif
658	Safefree (cctx->sptr);	695	Safefree (cctx->sptr);
659	#endif
660		696
661	Safefree (cctx);	697	Safefree (cctx);
662	}	698	}
663		699
664	static coro_cctx *	700	static coro_cctx *
…		…
698	++cctx_idle;	734	++cctx_idle;
699	cctx->next = cctx_first;	735	cctx->next = cctx_first;
700	cctx_first = cctx;	736	cctx_first = cctx;
701	}	737	}
702		738
		739	/ coroutine switching ***************************************************/
		740
703	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
704	static void NOINLINE	742	static void NOINLINE
705	transfer (struct coro prev, struct coro next)	743	transfer (struct coro prev, struct coro next)
706	{	744	{
707	dSTACKLEVEL;	745	dSTACKLEVEL;
708		746
709	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
710	if (!next)	748	if (!next)
711	{	749	{
712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
713	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	751	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
714	}	752	}
715	else if (prev != next)	753	else if (prev != next)
716	{	754	{
717	coro_cctx *prev__cctx;	755	coro_cctx *prev__cctx;
718		756
…		…
729	if (!prev->flags & CF_RUNNING)	767	if (!prev->flags & CF_RUNNING)
730	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
731		769
732	if (next->flags & CF_RUNNING)	770	if (next->flags & CF_RUNNING)
733	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		772
		773	if (next->flags & CF_DESTROYED)
		774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
734		775
735	prev->flags &= ~CF_RUNNING;	776	prev->flags &= ~CF_RUNNING;
736	next->flags \|= CF_RUNNING;	777	next->flags \|= CF_RUNNING;
737		778
738	LOCK;	779	LOCK;
…		…
759		800
760	/* possibly "free" the cctx */	801	/* possibly "free" the cctx */
761	if (prev__cctx->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
762	{	803	{
763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764	assert (PL_top_env == prev__cctx->top_env);	805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765		806
766	prev->cctx = 0;	807	prev->cctx = 0;
767		808
768	cctx_put (prev__cctx);	809	cctx_put (prev__cctx);
769	prev__cctx->inuse = 0;	810	prev__cctx->inuse = 0;
…		…
782	PL_top_env = next->cctx->top_env;	823	PL_top_env = next->cctx->top_env;
783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
784	}	825	}
785		826
786	free_coro_mortal ();	827	free_coro_mortal ();
787
788	UNLOCK;	828	UNLOCK;
789	}	829	}
790	}	830	}
791		831
792	struct transfer_args	832	struct transfer_args
…		…
794	struct coro prev, next;	834	struct coro prev, next;
795	};	835	};
796		836
797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
798		838
		839	/ high level stuff ******************************************************/
		840
799	static void	841	static int
800	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
801	{	843	{
802	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
803	return;	845	return 0;
		846
		847	coro->flags \|= CF_DESTROYED;
		848
		849	if (coro->flags & CF_READY)
		850	{
		851	/* reduce nready, as destroying a ready coro effectively unreadies it */
		852	/* alternative: look through all ready queues and remove the coro */
		853	LOCK;
		854	--coro_nready;
		855	UNLOCK;
		856	}
		857	else
		858	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
804		859
805	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
806	{	861	{
807	struct coro temp;	862	struct coro temp;
		863
		864	assert (!(coro->flags & CF_RUNNING));
		865
808	Zero (&temp, 1, struct coro);	866	Zero (&temp, 1, struct coro);
809	temp.save = CORO_SAVE_ALL;	867	temp.save = CORO_SAVE_ALL;
810		868
811	if (coro->flags & CF_RUNNING)	869	if (coro->flags & CF_RUNNING)
812	croak ("FATAL: tried to destroy currently running coroutine");	870	croak ("FATAL: tried to destroy currently running coroutine");
…		…
821	coro->mainstack = 0;	879	coro->mainstack = 0;
822	}	880	}
823		881
824	cctx_destroy (coro->cctx);	882	cctx_destroy (coro->cctx);
825	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
826	Safefree (coro);	884
		885	return 1;
827	}	886	}
828		887
829	static int	888	static int
830	coro_state_clear (pTHX_ SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
831	{	890	{
832	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
833	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
834		893
		894	if (--coro->refcnt < 0)
		895	{
835	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
836		899
837	return 0;	900	return 0;
838	}	901	}
839		902
840	static int	903	static int
…		…
847	return 0;	910	return 0;
848	}	911	}
849		912
850	static MGVTBL coro_state_vtbl = {	913	static MGVTBL coro_state_vtbl = {
851	0, 0, 0, 0,	914	0, 0, 0, 0,
852	coro_state_clear,	915	coro_state_free,
853	0,	916	0,
854	#ifdef MGf_DUP	917	#ifdef MGf_DUP
855	coro_state_dup,	918	coro_state_dup,
856	#else	919	#else
857	# define MGf_DUP 0	920	# define MGf_DUP 0
…		…
873	/* very slow, but rare, check */	936	/* very slow, but rare, check */
874	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
875	croak ("Coro::State object required");	938	croak ("Coro::State object required");
876	}	939	}
877		940
878	mg = SvMAGIC (coro);	941	mg = CORO_MAGIC (coro);
879	assert (mg->mg_type == PERL_MAGIC_ext);
880	return (struct coro *)mg->mg_ptr;	942	return (struct coro *)mg->mg_ptr;
881	}	943	}
882		944
883	static void	945	static void
884	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	946	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
…		…
908	return old_save;	970	return old_save;
909	}	971	}
910		972
911	/ Coro ******************************************************************/	973	/ Coro ******************************************************************/
912		974
913	#define PRIO_MAX 3
914	#define PRIO_HIGH 1
915	#define PRIO_NORMAL 0
916	#define PRIO_LOW -1
917	#define PRIO_IDLE -3
918	#define PRIO_MIN -4
919
920	/* for Coro.pm */
921	static SV *coro_current;
922	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
923	static int coro_nready;
924
925	static void	975	static void
926	coro_enq (SV *coro_sv)	976	coro_enq (SV *coro_sv)
927	{	977	{
928	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
929	coro_nready++;
930	}	979	}
931		980
932	static SV *	981	static SV *
933	coro_deq (int min_prio)	982	coro_deq (int min_prio)
934	{	983	{
…		…
938	if (min_prio < 0)	987	if (min_prio < 0)
939	min_prio = 0;	988	min_prio = 0;
940		989
941	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	990	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
942	if (AvFILLp (coro_ready [prio]) >= 0)	991	if (AvFILLp (coro_ready [prio]) >= 0)
943	{
944	coro_nready--;
945	return av_shift (coro_ready [prio]);	992	return av_shift (coro_ready [prio]);
946	}
947		993
948	return 0;	994	return 0;
949	}	995	}
950		996
951	static int	997	static int
…		…
963		1009
964	coro->flags \|= CF_READY;	1010	coro->flags \|= CF_READY;
965		1011
966	LOCK;	1012	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1013	coro_enq (SvREFCNT_inc (coro_sv));
		1014	++coro_nready;
968	UNLOCK;	1015	UNLOCK;
969		1016
970	return 1;	1017	return 1;
971	}	1018	}
972		1019
…		…
977	}	1024	}
978		1025
979	static void	1026	static void
980	prepare_schedule (struct transfer_args *ta)	1027	prepare_schedule (struct transfer_args *ta)
981	{	1028	{
982	SV prev, next;	1029	SV prev_sv, next_sv;
983		1030
984	for (;;)	1031	for (;;)
985	{	1032	{
986	LOCK;	1033	LOCK;
987	next = coro_deq (PRIO_MIN);	1034	next_sv = coro_deq (PRIO_MIN);
		1035
		1036	/* nothing to schedule: call the idle handler */
		1037	if (!next_sv)
		1038	{
		1039	dSP;
		1040	UNLOCK;
		1041
		1042	ENTER;
		1043	SAVETMPS;
		1044
		1045	PUSHMARK (SP);
		1046	PUTBACK;
		1047	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1048
		1049	FREETMPS;
		1050	LEAVE;
		1051	continue;
		1052	}
		1053
		1054	ta->next = SvSTATE (next_sv);
		1055
		1056	/* cannot transfer to destroyed coros, skip and look for next */
		1057	if (ta->next->flags & CF_DESTROYED)
		1058	{
		1059	UNLOCK;
		1060	SvREFCNT_dec (next_sv);
		1061	/* coro_nready is already taken care of by destroy */
		1062	continue;
		1063	}
		1064
		1065	--coro_nready;
988	UNLOCK;	1066	UNLOCK;
989
990	if (next)
991	break;	1067	break;
992
993	{
994	dSP;
995
996	ENTER;
997	SAVETMPS;
998
999	PUSHMARK (SP);
1000	PUTBACK;
1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002
1003	FREETMPS;
1004	LEAVE;
1005	}	1068	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1069
1011	/* free this only after the transfer */	1070	/* free this only after the transfer */
		1071	prev_sv = SvRV (coro_current);
		1072	SvRV_set (coro_current, next_sv);
		1073	ta->prev = SvSTATE (prev_sv);
		1074
		1075	assert (ta->next->flags & CF_READY);
		1076	ta->next->flags &= ~CF_READY;
		1077
1012	LOCK;	1078	LOCK;
1013	free_coro_mortal ();	1079	free_coro_mortal ();
		1080	coro_mortal = prev_sv;
1014	UNLOCK;	1081	UNLOCK;
1015	coro_mortal = prev;
1016
1017	assert (!SvROK(prev));//D
1018	assert (!SvROK(next));//D
1019
1020	ta->prev = SvSTATE (prev);
1021	ta->next = SvSTATE (next);
1022
1023	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;
1025	}	1082	}
1026		1083
1027	static void	1084	static void
1028	prepare_cede (struct transfer_args *ta)	1085	prepare_cede (struct transfer_args *ta)
1029	{	1086	{
…		…
1181	break;	1238	break;
1182	}	1239	}
1183		1240
1184	BARRIER;	1241	BARRIER;
1185	TRANSFER (ta);	1242	TRANSFER (ta);
1186	}
1187		1243
1188	void	1244	if (GIMME_V != G_VOID && ta.next != ta.prev)
1189	_clone_state_from (SV dst, SV src)	1245	XSRETURN_YES;
		1246	}
		1247
		1248	bool
		1249	_destroy (SV *coro_sv)
1190	CODE:	1250	CODE:
1191	{	1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1192	struct coro *coro_src = SvSTATE (src);	1252	OUTPUT:
1193		1253	RETVAL
1194	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1195
1196	++coro_src->refcnt;
1197	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1198	}
1199		1254
1200	void	1255	void
1201	_exit (code)	1256	_exit (code)
1202	int code	1257	int code
1203	PROTOTYPE: $	1258	PROTOTYPE: $

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Comparing Coro/Coro/State.xs (file contents): Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs. Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs.
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC