[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 1.137 by root, Sun Jan 14 20:47:53 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;
…		…
137	/* the stack */	138	/* the stack */
138	void *sptr;	139	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
140		141
141	/* cpu state */	142	/* cpu state */
142	void idle_sp; / sp of top-level transfer/schedule/cede call */	143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
143	JMPENV *top_env;	145	JMPENV *top_env;
144	coro_context cctx;	146	coro_context cctx;
145		147
146	int inuse;	148	int inuse;
147		149
…		…
149	int valgrind_id;	151	int valgrind_id;
150	#endif	152	#endif
151	} coro_cctx;	153	} coro_cctx;
152		154
153	enum {	155	enum {
154	CF_RUNNING = 0x0001, /* coroutine is running */	156	CF_RUNNING = 0x0001, /* coroutine is running */
155	CF_READY = 0x0002, /* coroutine is ready */	157	CF_READY = 0x0002, /* coroutine is ready */
156	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 */
157	};	160	};
158		161
159	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
160	struct coro {	163	struct coro {
161	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
…		…
182	int prio;	185	int prio;
183	};	186	};
184		187
185	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
186	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 ********************************************************/
187		206
188	static AV *	207	static AV *
189	coro_clone_padlist (CV *cv)	208	coro_clone_padlist (CV *cv)
190	{	209	{
191	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
…		…
300	av_extend (av, AvMAX (av) + 1);	319	av_extend (av, AvMAX (av) + 1);
301		320
302	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
303	}	322	}
304		323
		324	/ load & save, init *****************************************************/
		325
305	#define SB do {	326	#define SB do {
306	#define SE } while (0)	327	#define SE } while (0)
307		328
308	#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
309		330
…		…
470		491
471	/* free all temporaries */	492	/* free all temporaries */
472	FREETMPS;	493	FREETMPS;
473	assert (PL_tmps_ix == -1);	494	assert (PL_tmps_ix == -1);
474		495
		496	/* unwind all extra stacks */
475	POPSTACK_TO (PL_mainstack);	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
476	}	501	}
477		502
478	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
479	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
480		505
…		…
496	Safefree (PL_savestack);	521	Safefree (PL_savestack);
497	#if !PERL_VERSION_ATLEAST (5,9,0)	522	#if !PERL_VERSION_ATLEAST (5,9,0)
498	Safefree (PL_retstack);	523	Safefree (PL_retstack);
499	#endif	524	#endif
500	}	525	}
		526
		527	/ coroutine stack handling **********************************************/
501		528
502	static void	529	static void
503	setup_coro (struct coro *coro)	530	setup_coro (struct coro *coro)
504	{	531	{
505	/*	532	/*
…		…
698	++cctx_idle;	725	++cctx_idle;
699	cctx->next = cctx_first;	726	cctx->next = cctx_first;
700	cctx_first = cctx;	727	cctx_first = cctx;
701	}	728	}
702		729
		730	/ coroutine switching ***************************************************/
		731
703	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
704	static void NOINLINE	733	static void NOINLINE
705	transfer (struct coro prev, struct coro next)	734	transfer (struct coro prev, struct coro next)
706	{	735	{
707	dSTACKLEVEL;	736	dSTACKLEVEL;
708		737
709	/* sometimes transfer is only called to set idle_sp */	738	/* sometimes transfer is only called to set idle_sp */
710	if (!next)	739	if (!next)
711	{	740	{
712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	741	((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 */	742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
714	}	743	}
715	else if (prev != next)	744	else if (prev != next)
716	{	745	{
717	coro_cctx *prev__cctx;	746	coro_cctx *prev__cctx;
718		747
…		…
729	if (!prev->flags & CF_RUNNING)	758	if (!prev->flags & CF_RUNNING)
730	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");
731		760
732	if (next->flags & CF_RUNNING)	761	if (next->flags & CF_RUNNING)
733	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");
734		766
735	prev->flags &= ~CF_RUNNING;	767	prev->flags &= ~CF_RUNNING;
736	next->flags \|= CF_RUNNING;	768	next->flags \|= CF_RUNNING;
737		769
738	LOCK;	770	LOCK;
…		…
759		791
760	/* possibly "free" the cctx */	792	/* possibly "free" the cctx */
761	if (prev__cctx->idle_sp == STACKLEVEL)	793	if (prev__cctx->idle_sp == STACKLEVEL)
762	{	794	{
763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764	assert (PL_top_env == prev__cctx->top_env);	796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765		797
766	prev->cctx = 0;	798	prev->cctx = 0;
767		799
768	cctx_put (prev__cctx);	800	cctx_put (prev__cctx);
769	prev__cctx->inuse = 0;	801	prev__cctx->inuse = 0;
…		…
782	PL_top_env = next->cctx->top_env;	814	PL_top_env = next->cctx->top_env;
783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
784	}	816	}
785		817
786	free_coro_mortal ();	818	free_coro_mortal ();
787
788	UNLOCK;	819	UNLOCK;
789	}	820	}
790	}	821	}
791		822
792	struct transfer_args	823	struct transfer_args
…		…
794	struct coro prev, next;	825	struct coro prev, next;
795	};	826	};
796		827
797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
798		829
		830	/ high level stuff ******************************************************/
		831
799	static void	832	static int
800	coro_state_destroy (struct coro *coro)	833	coro_state_destroy (struct coro *coro)
801	{	834	{
802	if (coro->refcnt--)	835	if (coro->flags & CF_DESTROYED)
803	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 */
804		850
805	if (coro->mainstack && coro->mainstack != main_mainstack)	851	if (coro->mainstack && coro->mainstack != main_mainstack)
806	{	852	{
		853	assert (!(coro->flags & CF_RUNNING));
		854
807	struct coro temp;	855	struct coro temp;
808	Zero (&temp, 1, struct coro);	856	Zero (&temp, 1, struct coro);
809	temp.save = CORO_SAVE_ALL;	857	temp.save = CORO_SAVE_ALL;
810		858
811	if (coro->flags & CF_RUNNING)	859	if (coro->flags & CF_RUNNING)
…		…
821	coro->mainstack = 0;	869	coro->mainstack = 0;
822	}	870	}
823		871
824	cctx_destroy (coro->cctx);	872	cctx_destroy (coro->cctx);
825	SvREFCNT_dec (coro->args);	873	SvREFCNT_dec (coro->args);
826	Safefree (coro);	874
		875	return 1;
827	}	876	}
828		877
829	static int	878	static int
830	coro_state_clear (pTHX_ SV sv, MAGIC mg)	879	coro_state_free (pTHX_ SV sv, MAGIC mg)
831	{	880	{
832	struct coro coro = (struct coro )mg->mg_ptr;	881	struct coro coro = (struct coro )mg->mg_ptr;
833	mg->mg_ptr = 0;	882	mg->mg_ptr = 0;
834		883
		884	if (--coro->refcnt < 0)
		885	{
835	coro_state_destroy (coro);	886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
836		889
837	return 0;	890	return 0;
838	}	891	}
839		892
840	static int	893	static int
…		…
847	return 0;	900	return 0;
848	}	901	}
849		902
850	static MGVTBL coro_state_vtbl = {	903	static MGVTBL coro_state_vtbl = {
851	0, 0, 0, 0,	904	0, 0, 0, 0,
852	coro_state_clear,	905	coro_state_free,
853	0,	906	0,
854	#ifdef MGf_DUP	907	#ifdef MGf_DUP
855	coro_state_dup,	908	coro_state_dup,
856	#else	909	#else
857	# define MGf_DUP 0	910	# define MGf_DUP 0
…		…
908	return old_save;	961	return old_save;
909	}	962	}
910		963
911	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
912		965
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	966	static void
926	coro_enq (SV *coro_sv)	967	coro_enq (SV *coro_sv)
927	{	968	{
928	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);
929	coro_nready++;
930	}	970	}
931		971
932	static SV *	972	static SV *
933	coro_deq (int min_prio)	973	coro_deq (int min_prio)
934	{	974	{
…		…
938	if (min_prio < 0)	978	if (min_prio < 0)
939	min_prio = 0;	979	min_prio = 0;
940		980
941	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
942	if (AvFILLp (coro_ready [prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
943	{
944	coro_nready--;
945	return av_shift (coro_ready [prio]);	983	return av_shift (coro_ready [prio]);
946	}
947		984
948	return 0;	985	return 0;
949	}	986	}
950		987
951	static int	988	static int
…		…
963		1000
964	coro->flags \|= CF_READY;	1001	coro->flags \|= CF_READY;
965		1002
966	LOCK;	1003	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
968	UNLOCK;	1006	UNLOCK;
969		1007
970	return 1;	1008	return 1;
971	}	1009	}
972		1010
…		…
977	}	1015	}
978		1016
979	static void	1017	static void
980	prepare_schedule (struct transfer_args *ta)	1018	prepare_schedule (struct transfer_args *ta)
981	{	1019	{
982	SV prev, next;	1020	SV prev_sv, next_sv;
983		1021
984	for (;;)	1022	for (;;)
985	{	1023	{
986	LOCK;	1024	LOCK;
987	next = coro_deq (PRIO_MIN);	1025	next_sv = coro_deq (PRIO_MIN);
988	UNLOCK;	1026	UNLOCK;
989		1027
		1028	/* nothing to schedule: call the idle handler */
990	if (next)	1029	if (!next_sv)
991	break;
992
993	{	1030	{
994	dSP;	1031	dSP;
995		1032
996	ENTER;	1033	ENTER;
997	SAVETMPS;	1034	SAVETMPS;
998		1035
999	PUSHMARK (SP);	1036	PUSHMARK (SP);
1000	PUTBACK;	1037	PUTBACK;
1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1038	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002		1039
1003	FREETMPS;	1040	FREETMPS;
1004	LEAVE;	1041	LEAVE;
		1042	continue;
1005	}	1043	}
1006	}
1007		1044
1008	prev = SvRV (coro_current);	1045	ta->next = SvSTATE (next_sv);
1009	SvRV_set (coro_current, next);	1046
		1047	/* cannot transfer to destroyed coros, skip and look for next */
		1048	if (ta->next->flags & CF_DESTROYED)
		1049	{
		1050	SvREFCNT_dec (next_sv);
		1051	/* coro_nready is already taken care of by destroy */
		1052	continue;
		1053	}
		1054
		1055	LOCK;
		1056	--coro_nready;
		1057	UNLOCK;
		1058	break;
		1059	}
1010		1060
1011	/* 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
1012	LOCK;	1069	LOCK;
1013	free_coro_mortal ();	1070	free_coro_mortal ();
		1071	coro_mortal = prev_sv;
1014	UNLOCK;	1072	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	}	1073	}
1026		1074
1027	static void	1075	static void
1028	prepare_cede (struct transfer_args *ta)	1076	prepare_cede (struct transfer_args *ta)
1029	{	1077	{
…		…
1181	break;	1229	break;
1182	}	1230	}
1183		1231
1184	BARRIER;	1232	BARRIER;
1185	TRANSFER (ta);	1233	TRANSFER (ta);
1186	}
1187		1234
1188	void	1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
1189	_clone_state_from (SV dst, SV src)	1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
1190	CODE:	1241	CODE:
1191	{	1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1192	struct coro *coro_src = SvSTATE (src);	1243	OUTPUT:
1193		1244	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		1245
1200	void	1246	void
1201	_exit (code)	1247	_exit (code)
1202	int code	1248	int code
1203	PROTOTYPE: $	1249	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 1.137 by root, Sun Jan 14 20:47:53 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs.
Revision 1.137 by root, Sun Jan 14 20:47:53 2007 UTC