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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.138 by root, Sun Jan 14 20:49:45 2007 UTC

…		…
112	#else	112	#else
113	# define LOCK (void)0	113	# define LOCK (void)0
114	# define UNLOCK (void)0	114	# define UNLOCK (void)0
115	#endif	115	#endif
116		116
		117	/* helper storage struct for Coro::AIO */
117	struct io_state	118	struct io_state
118	{	119	{
119	int errorno;	120	int errorno;
120	I32 laststype;	121	I32 laststype;
121	int laststatval;	122	int laststatval;
…		…
150	int valgrind_id;	151	int valgrind_id;
151	#endif	152	#endif
152	} coro_cctx;	153	} coro_cctx;
153		154
154	enum {	155	enum {
155	CF_RUNNING = 0x0001, /* coroutine is running */	156	CF_RUNNING = 0x0001, /* coroutine is running */
156	CF_READY = 0x0002, /* coroutine is ready */	157	CF_READY = 0x0002, /* coroutine is ready */
157	CF_NEW = 0x0004, /* ahs never been switched to */	158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
158	};	160	};
159		161
160	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
161	struct coro {	163	struct coro {
162	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
…		…
183	int prio;	185	int prio;
184	};	186	};
185		187
186	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
187	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
		190
		191	/ Coro ******************************************************************/
		192
		193	#define PRIO_MAX 3
		194	#define PRIO_HIGH 1
		195	#define PRIO_NORMAL 0
		196	#define PRIO_LOW -1
		197	#define PRIO_IDLE -3
		198	#define PRIO_MIN -4
		199
		200	/* for Coro.pm */
		201	static SV *coro_current;
		202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		203	static int coro_nready;
		204
		205	/ lowlevel stuff ********************************************************/
188		206
189	static AV *	207	static AV *
190	coro_clone_padlist (CV *cv)	208	coro_clone_padlist (CV *cv)
191	{	209	{
192	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
…		…
301	av_extend (av, AvMAX (av) + 1);	319	av_extend (av, AvMAX (av) + 1);
302		320
303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
304	}	322	}
305		323
		324	/ load & save, init *****************************************************/
		325
306	#define SB do {	326	#define SB do {
307	#define SE } while (0)	327	#define SE } while (0)
308		328
309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
310		330
…		…
471		491
472	/* free all temporaries */	492	/* free all temporaries */
473	FREETMPS;	493	FREETMPS;
474	assert (PL_tmps_ix == -1);	494	assert (PL_tmps_ix == -1);
475		495
		496	/* unwind all extra stacks */
476	POPSTACK_TO (PL_mainstack);	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
477	}	501	}
478		502
479	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
480	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
481		505
…		…
497	Safefree (PL_savestack);	521	Safefree (PL_savestack);
498	#if !PERL_VERSION_ATLEAST (5,9,0)	522	#if !PERL_VERSION_ATLEAST (5,9,0)
499	Safefree (PL_retstack);	523	Safefree (PL_retstack);
500	#endif	524	#endif
501	}	525	}
		526
		527	/ coroutine stack handling **********************************************/
502		528
503	static void	529	static void
504	setup_coro (struct coro *coro)	530	setup_coro (struct coro *coro)
505	{	531	{
506	/*	532	/*
…		…
699	++cctx_idle;	725	++cctx_idle;
700	cctx->next = cctx_first;	726	cctx->next = cctx_first;
701	cctx_first = cctx;	727	cctx_first = cctx;
702	}	728	}
703		729
		730	/ coroutine switching ***************************************************/
		731
704	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
705	static void NOINLINE	733	static void NOINLINE
706	transfer (struct coro prev, struct coro next)	734	transfer (struct coro prev, struct coro next)
707	{	735	{
708	dSTACKLEVEL;	736	dSTACKLEVEL;
…		…
730	if (!prev->flags & CF_RUNNING)	758	if (!prev->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
732		760
733	if (next->flags & CF_RUNNING)	761	if (next->flags & CF_RUNNING)
734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		763
		764	if (next->flags & CF_DESTROYED)
		765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
735		766
736	prev->flags &= ~CF_RUNNING;	767	prev->flags &= ~CF_RUNNING;
737	next->flags \|= CF_RUNNING;	768	next->flags \|= CF_RUNNING;
738		769
739	LOCK;	770	LOCK;
…		…
783	PL_top_env = next->cctx->top_env;	814	PL_top_env = next->cctx->top_env;
784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
785	}	816	}
786		817
787	free_coro_mortal ();	818	free_coro_mortal ();
788
789	UNLOCK;	819	UNLOCK;
790	}	820	}
791	}	821	}
792		822
793	struct transfer_args	823	struct transfer_args
…		…
795	struct coro prev, next;	825	struct coro prev, next;
796	};	826	};
797		827
798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
799		829
		830	/ high level stuff ******************************************************/
		831
800	static void	832	static int
801	coro_state_destroy (struct coro *coro)	833	coro_state_destroy (struct coro *coro)
802	{	834	{
803	if (coro->refcnt--)	835	if (coro->flags & CF_DESTROYED)
804	return;	836	return 0;
		837
		838	coro->flags \|= CF_DESTROYED;
		839
		840	if (coro->flags & CF_READY)
		841	{
		842	/* reduce nready, as destroying a ready coro effectively unreadies it */
		843	/* alternative: look through all ready queues and remove it */
		844	LOCK;
		845	--coro_nready;
		846	UNLOCK;
		847	}
		848	else
		849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
805		850
806	if (coro->mainstack && coro->mainstack != main_mainstack)	851	if (coro->mainstack && coro->mainstack != main_mainstack)
807	{	852	{
		853	assert (!(coro->flags & CF_RUNNING));
		854
808	struct coro temp;	855	struct coro temp;
809	Zero (&temp, 1, struct coro);	856	Zero (&temp, 1, struct coro);
810	temp.save = CORO_SAVE_ALL;	857	temp.save = CORO_SAVE_ALL;
811		858
812	if (coro->flags & CF_RUNNING)	859	if (coro->flags & CF_RUNNING)
…		…
822	coro->mainstack = 0;	869	coro->mainstack = 0;
823	}	870	}
824		871
825	cctx_destroy (coro->cctx);	872	cctx_destroy (coro->cctx);
826	SvREFCNT_dec (coro->args);	873	SvREFCNT_dec (coro->args);
827	Safefree (coro);	874
		875	return 1;
828	}	876	}
829		877
830	static int	878	static int
831	coro_state_clear (pTHX_ SV sv, MAGIC mg)	879	coro_state_free (pTHX_ SV sv, MAGIC mg)
832	{	880	{
833	struct coro coro = (struct coro )mg->mg_ptr;	881	struct coro coro = (struct coro )mg->mg_ptr;
834	mg->mg_ptr = 0;	882	mg->mg_ptr = 0;
835		883
		884	if (--coro->refcnt < 0)
		885	{
836	coro_state_destroy (coro);	886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
837		889
838	return 0;	890	return 0;
839	}	891	}
840		892
841	static int	893	static int
…		…
848	return 0;	900	return 0;
849	}	901	}
850		902
851	static MGVTBL coro_state_vtbl = {	903	static MGVTBL coro_state_vtbl = {
852	0, 0, 0, 0,	904	0, 0, 0, 0,
853	coro_state_clear,	905	coro_state_free,
854	0,	906	0,
855	#ifdef MGf_DUP	907	#ifdef MGf_DUP
856	coro_state_dup,	908	coro_state_dup,
857	#else	909	#else
858	# define MGf_DUP 0	910	# define MGf_DUP 0
…		…
909	return old_save;	961	return old_save;
910	}	962	}
911		963
912	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
913		965
914	#define PRIO_MAX 3
915	#define PRIO_HIGH 1
916	#define PRIO_NORMAL 0
917	#define PRIO_LOW -1
918	#define PRIO_IDLE -3
919	#define PRIO_MIN -4
920
921	/* for Coro.pm */
922	static SV *coro_current;
923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
924	static int coro_nready;
925
926	static void	966	static void
927	coro_enq (SV *coro_sv)	967	coro_enq (SV *coro_sv)
928	{	968	{
929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
930	coro_nready++;
931	}	970	}
932		971
933	static SV *	972	static SV *
934	coro_deq (int min_prio)	973	coro_deq (int min_prio)
935	{	974	{
…		…
939	if (min_prio < 0)	978	if (min_prio < 0)
940	min_prio = 0;	979	min_prio = 0;
941		980
942	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
943	if (AvFILLp (coro_ready [prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
944	{
945	coro_nready--;
946	return av_shift (coro_ready [prio]);	983	return av_shift (coro_ready [prio]);
947	}
948		984
949	return 0;	985	return 0;
950	}	986	}
951		987
952	static int	988	static int
…		…
964		1000
965	coro->flags \|= CF_READY;	1001	coro->flags \|= CF_READY;
966		1002
967	LOCK;	1003	LOCK;
968	coro_enq (SvREFCNT_inc (coro_sv));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
969	UNLOCK;	1006	UNLOCK;
970		1007
971	return 1;	1008	return 1;
972	}	1009	}
973		1010
…		…
978	}	1015	}
979		1016
980	static void	1017	static void
981	prepare_schedule (struct transfer_args *ta)	1018	prepare_schedule (struct transfer_args *ta)
982	{	1019	{
983	SV prev, next;	1020	SV prev_sv, next_sv;
984		1021
985	for (;;)	1022	for (;;)
986	{	1023	{
987	LOCK;	1024	LOCK;
988	next = coro_deq (PRIO_MIN);	1025	next_sv = coro_deq (PRIO_MIN);
		1026
		1027	/* nothing to schedule: call the idle handler */
		1028	if (!next_sv)
		1029	{
		1030	UNLOCK;
		1031	dSP;
		1032
		1033	ENTER;
		1034	SAVETMPS;
		1035
		1036	PUSHMARK (SP);
		1037	PUTBACK;
		1038	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1039
		1040	FREETMPS;
		1041	LEAVE;
		1042	continue;
		1043	}
		1044
		1045	ta->next = SvSTATE (next_sv);
		1046
		1047	/* cannot transfer to destroyed coros, skip and look for next */
		1048	if (ta->next->flags & CF_DESTROYED)
		1049	{
		1050	UNLOCK;
		1051	SvREFCNT_dec (next_sv);
		1052	/* coro_nready is already taken care of by destroy */
		1053	continue;
		1054	}
		1055
		1056	--coro_nready;
989	UNLOCK;	1057	UNLOCK;
990
991	if (next)
992	break;	1058	break;
993
994	{
995	dSP;
996
997	ENTER;
998	SAVETMPS;
999
1000	PUSHMARK (SP);
1001	PUTBACK;
1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1003
1004	FREETMPS;
1005	LEAVE;
1006	}	1059	}
1007	}
1008
1009	prev = SvRV (coro_current);
1010	SvRV_set (coro_current, next);
1011		1060
1012	/* free this only after the transfer */	1061	/* free this only after the transfer */
		1062	prev_sv = SvRV (coro_current);
		1063	SvRV_set (coro_current, next_sv);
		1064	ta->prev = SvSTATE (prev_sv);
		1065
		1066	assert (ta->next->flags & CF_READY);
		1067	ta->next->flags &= ~CF_READY;
		1068
1013	LOCK;	1069	LOCK;
1014	free_coro_mortal ();	1070	free_coro_mortal ();
		1071	coro_mortal = prev_sv;
1015	UNLOCK;	1072	UNLOCK;
1016	coro_mortal = prev;
1017
1018	assert (!SvROK(prev));//D
1019	assert (!SvROK(next));//D
1020
1021	ta->prev = SvSTATE (prev);
1022	ta->next = SvSTATE (next);
1023
1024	assert (ta->next->flags & CF_READY);
1025	ta->next->flags &= ~CF_READY;
1026	}	1073	}
1027		1074
1028	static void	1075	static void
1029	prepare_cede (struct transfer_args *ta)	1076	prepare_cede (struct transfer_args *ta)
1030	{	1077	{
…		…
1182	break;	1229	break;
1183	}	1230	}
1184		1231
1185	BARRIER;	1232	BARRIER;
1186	TRANSFER (ta);	1233	TRANSFER (ta);
1187	}
1188		1234
1189	void	1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
1190	_clone_state_from (SV dst, SV src)	1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
1191	CODE:	1241	CODE:
1192	{	1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1193	struct coro *coro_src = SvSTATE (src);	1243	OUTPUT:
1194		1244	RETVAL
1195	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1196
1197	++coro_src->refcnt;
1198	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1199	}
1200		1245
1201	void	1246	void
1202	_exit (code)	1247	_exit (code)
1203	int code	1248	int code
1204	PROTOTYPE: $	1249	PROTOTYPE: $

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Comparing Coro/Coro/State.xs (file contents): Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs. Revision 1.138 by root, Sun Jan 14 20:49:45 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.138 by root, Sun Jan 14 20:49:45 2007 UTC