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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.38 by root, Wed Nov 7 00:21:06 2001 UTC vs.
Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC

…		…
1	#include "EXTERN.h"	1	#include "EXTERN.h"
2	#include "perl.h"	2	#include "perl.h"
3	#include "XSUB.h"	3	#include "XSUB.h"
		4
		5	#include "patchlevel.h"
		6
		7	#if PATCHLEVEL < 6
		8	# ifndef PL_ppaddr
		9	# define PL_ppaddr ppaddr
		10	# endif
		11	# ifndef call_sv
		12	# define call_sv perl_call_sv
		13	# endif
		14	# ifndef get_sv
		15	# define get_sv perl_get_sv
		16	# endif
		17	# ifndef get_cv
		18	# define get_cv perl_get_cv
		19	# endif
		20	# ifndef IS_PADGV
		21	# define IS_PADGV(v) 0
		22	# endif
		23	# ifndef IS_PADCONST
		24	# define IS_PADCONST(v) 0
		25	# endif
		26	#endif
4		27
5	#include "libcoro/coro.c"	28	#include "libcoro/coro.c"
6		29
7	#include <signal.h>	30	#include <signal.h>
8		31
47	void *sptr;	70	void *sptr;
48	long ssize; /* positive == mmap, otherwise malloc */	71	long ssize; /* positive == mmap, otherwise malloc */
49	} coro_stack;	72	} coro_stack;
50		73
51	struct coro {	74	struct coro {
		75	/* the top-level JMPENV for each coroutine, needed to catch dies. */
		76	JMPENV start_env;
		77
52	/* the optional C context */	78	/* the optional C context */
53	coro_stack *stack;	79	coro_stack *stack;
54	void *cursp;	80	void *cursp;
55	int gencnt;	81	int gencnt;
56		82
57	/* optionally saved, might be zero */	83	/* optionally saved, might be zero */
58	AV *defav;	84	AV *defav;
59	SV *defsv;	85	SV *defsv;
60	SV *errsv;	86	SV *errsv;
61	/* TODO: PL_pmop might be nice && effortless to save. */
62		87
63	/* saved global state not related to stacks */	88	/* saved global state not related to stacks */
64	U8 dowarn;	89	U8 dowarn;
65	I32 in_eval;	90	I32 in_eval;
66		91
…		…
69	AV *curstack;	94	AV *curstack;
70	AV *mainstack;	95	AV *mainstack;
71	SV **stack_sp;	96	SV **stack_sp;
72	OP *op;	97	OP *op;
73	SV **curpad;	98	SV **curpad;
		99	AV *comppad;
74	SV **stack_base;	100	SV **stack_base;
75	SV **stack_max;	101	SV **stack_max;
76	SV **tmps_stack;	102	SV **tmps_stack;
77	I32 tmps_floor;	103	I32 tmps_floor;
78	I32 tmps_ix;	104	I32 tmps_ix;
…		…
102	static AV main_mainstack; / used to differentiate between $main and others */	128	static AV main_mainstack; / used to differentiate between $main and others */
103	static HV *coro_state_stash;	129	static HV *coro_state_stash;
104	static SV *ucoro_state_sv;	130	static SV *ucoro_state_sv;
105	static U32 ucoro_state_hash;	131	static U32 ucoro_state_hash;
106	static HV *padlist_cache;	132	static HV *padlist_cache;
		133	static SV coro_mortal; / will be freed after next transfer */
107		134
108	/* mostly copied from op.c:cv_clone2 */	135	/* mostly copied from op.c:cv_clone2 */
109	STATIC AV *	136	STATIC AV *
110	clone_padlist (AV *protopadlist)	137	clone_padlist (AV *protopadlist)
111	{	138	{
…		…
276	#define SE } while (0)	303	#define SE } while (0)
277		304
278	#define LOAD(state) load_state(aTHX_ (state));	305	#define LOAD(state) load_state(aTHX_ (state));
279	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));	306	#define SAVE(state,flags) save_state(aTHX_ (state),(flags));
280		307
281	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); SE	308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec(sv); (sv) = (val); (val) = 0; SE
282		309
283	static void	310	static void
284	load_state(pTHX_ Coro__State c)	311	load_state(pTHX_ Coro__State c)
285	{	312	{
286	PL_dowarn = c->dowarn;	313	PL_dowarn = c->dowarn;
…		…
290	PL_curstack = c->curstack;	317	PL_curstack = c->curstack;
291	PL_mainstack = c->mainstack;	318	PL_mainstack = c->mainstack;
292	PL_stack_sp = c->stack_sp;	319	PL_stack_sp = c->stack_sp;
293	PL_op = c->op;	320	PL_op = c->op;
294	PL_curpad = c->curpad;	321	PL_curpad = c->curpad;
		322	PL_comppad = c->comppad;
295	PL_stack_base = c->stack_base;	323	PL_stack_base = c->stack_base;
296	PL_stack_max = c->stack_max;	324	PL_stack_max = c->stack_max;
297	PL_tmps_stack = c->tmps_stack;	325	PL_tmps_stack = c->tmps_stack;
298	PL_tmps_floor = c->tmps_floor;	326	PL_tmps_floor = c->tmps_floor;
299	PL_tmps_ix = c->tmps_ix;	327	PL_tmps_ix = c->tmps_ix;
…		…
387	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
388		416
389	get_padlist (cv); /* this is a monster */	417	get_padlist (cv); /* this is a monster */
390	}	418	}
391	}	419	}
		420	#ifdef CXt_FORMAT
392	else if (CxTYPE(cx) == CXt_FORMAT)	421	else if (CxTYPE(cx) == CXt_FORMAT)
393	{	422	{
394	/* I never used formats, so how should I know how these are implemented? */	423	/* I never used formats, so how should I know how these are implemented? */
395	/* my bold guess is as a simple, plain sub... */	424	/* my bold guess is as a simple, plain sub... */
396	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");	425	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
397	}	426	}
		427	#endif
398	}	428	}
399		429
400	if (top_si->si_type == PERLSI_MAIN)	430	if (top_si->si_type == PERLSI_MAIN)
401	break;	431	break;
402		432
…		…
419	c->curstack = PL_curstack;	449	c->curstack = PL_curstack;
420	c->mainstack = PL_mainstack;	450	c->mainstack = PL_mainstack;
421	c->stack_sp = PL_stack_sp;	451	c->stack_sp = PL_stack_sp;
422	c->op = PL_op;	452	c->op = PL_op;
423	c->curpad = PL_curpad;	453	c->curpad = PL_curpad;
		454	c->comppad = PL_comppad;
424	c->stack_base = PL_stack_base;	455	c->stack_base = PL_stack_base;
425	c->stack_max = PL_stack_max;	456	c->stack_max = PL_stack_max;
426	c->tmps_stack = PL_tmps_stack;	457	c->tmps_stack = PL_tmps_stack;
427	c->tmps_floor = PL_tmps_floor;	458	c->tmps_floor = PL_tmps_floor;
428	c->tmps_ix = PL_tmps_ix;	459	c->tmps_ix = PL_tmps_ix;
…		…
468		499
469	New(54,PL_markstack,16,I32);	500	New(54,PL_markstack,16,I32);
470	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
471	PL_markstack_max = PL_markstack + 16;	502	PL_markstack_max = PL_markstack + 16;
472		503
		504	#ifdef SET_MARK_OFFSET
473	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
		506	#endif
474		507
475	New(54,PL_scopestack,16,I32);	508	New(54,PL_scopestack,16,I32);
476	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
477	PL_scopestack_max = 16;	510	PL_scopestack_max = 16;
478		511
…		…
576	{	609	{
577	#ifdef HAVE_MMAP	610	#ifdef HAVE_MMAP
578	if (stack->ssize > 0 && stack->sptr)	611	if (stack->ssize > 0 && stack->sptr)
579	munmap (stack->sptr, stack->ssize);	612	munmap (stack->sptr, stack->ssize);
580	else	613	else
581	#else	614	#endif
582	Safefree (stack->sptr);	615	Safefree (stack->sptr);
583	#endif	616
584	Safefree (stack);	617	Safefree (stack);
585	}	618	}
586	else if (ctx->gencnt == stack->gencnt)	619	else if (ctx->gencnt == stack->gencnt)
587	--stack->usecnt;	620	--stack->usecnt;
588	}	621	}
…		…
600		633
601	coro_init_stacks (aTHX);	634	coro_init_stacks (aTHX);
602	/PL_curcop = 0;/	635	/PL_curcop = 0;/
603	/PL_in_eval = PL_in_eval;/ /* inherit */	636	/PL_in_eval = PL_in_eval;/ /* inherit */
604	SvREFCNT_dec (GvAV (PL_defgv));	637	SvREFCNT_dec (GvAV (PL_defgv));
605	GvAV (PL_defgv) = ctx->args;	638	GvAV (PL_defgv) = ctx->args; ctx->args = 0;
606		639
607	SPAGAIN;	640	SPAGAIN;
608		641
609	if (ctx->stack)	642	if (ctx->stack)
610	{	643	{
…		…
637	* that doesn't matter, though, since it is only	670	* that doesn't matter, though, since it is only
638	* pp_nextstate and we never return...	671	* pp_nextstate and we never return...
639	* ah yes, and I don't care anyways ;)	672	* ah yes, and I don't care anyways ;)
640	*/	673	*/
641	PUTBACK;	674	PUTBACK;
642	PL_op = pp_entersub();	675	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
643	SPAGAIN;	676	SPAGAIN;
644		677
645	ENTER; /* necessary e.g. for dounwind */	678	ENTER; /* necessary e.g. for dounwind */
646	}	679	}
647	}	680	}
…		…
653	* this is a _very_ stripped down perl interpreter ;)	686	* this is a _very_ stripped down perl interpreter ;)
654	*/	687	*/
655	Coro__State ctx = (Coro__State)arg;	688	Coro__State ctx = (Coro__State)arg;
656	JMPENV coro_start_env;	689	JMPENV coro_start_env;
657		690
658	/* same as JMPENV_BOOTSTRAP */
659	Zero(&coro_start_env, 1, JMPENV);
660	coro_start_env.je_ret = -1;
661	coro_start_env.je_mustcatch = TRUE;
662	PL_top_env = &coro_start_env;	691	PL_top_env = &ctx->start_env;
663		692
664	ctx->cursp = 0;	693	ctx->cursp = 0;
665	PL_op = PL_op->op_next;	694	PL_op = PL_op->op_next;
666	CALLRUNOPS(aTHX);	695	CALLRUNOPS(aTHX);
667		696
…		…
725	if (!prev->stack)	754	if (!prev->stack)
726	allocate_stack (prev, 0);	755	allocate_stack (prev, 0);
727		756
728	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	757	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
729	{	758	{
		759	PL_top_env = &next->start_env;
		760
730	setup_coro (next);	761	setup_coro (next);
731		762
732	prev->stack->refcnt++;	763	prev->stack->refcnt++;
733	prev->stack->usecnt++;	764	prev->stack->usecnt++;
734	next->stack = prev->stack;	765	next->stack = prev->stack;
735	next->gencnt = prev->gencnt;	766	next->gencnt = prev->gencnt;
736	}	767	}
737	else	768	else
738	{	769	{
		770	assert (!next->stack);
739	allocate_stack (next, 1);	771	allocate_stack (next, 1);
740	coro_create (&(next->stack->cctx),	772	coro_create (&(next->stack->cctx),
741	setup_coro, (void *)next,	773	setup_coro, (void *)next,
742	next->stack->sptr, labs (next->stack->ssize));	774	next->stack->sptr, labs (next->stack->ssize));
743	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	775	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
…		…
748	setup_coro (next);	780	setup_coro (next);
749	}	781	}
750		782
751	/*	783	/*
752	* xnext is now either prev or next, depending on wether	784	* xnext is now either prev or next, depending on wether
753	* we switched the c stack or not. that's why i use a global	785	* we switched the c stack or not. that's why I use a global
754	* variable, that should become thread-specific at one point.	786	* variable, that should become thread-specific at one point.
755	*/	787	*/
756	xnext->cursp = stacklevel;	788	xnext->cursp = stacklevel;
757	}	789	}
758	}
759		790
760	static struct coro *	791	if (coro_mortal)
761	sv_to_coro (SV arg, const char funcname, const char *varname)
762	{
763	if (SvROK(arg) && SvTYPE(SvRV(arg)) == SVt_PVHV)
764	{	792	{
765	HE he = hv_fetch_ent((HV )SvRV(arg), ucoro_state_sv, 0, ucoro_state_hash);	793	SvREFCNT_dec (coro_mortal);
766		794	coro_mortal = 0;
767	if (!he)
768	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", funcname, varname);
769
770	arg = HeVAL(he);
771	}	795	}
772		796	}
		797
		798	#define SV_CORO(sv,func) \
		799	do { \
		800	if (SvROK (sv)) \
		801	sv = SvRV (sv); \
		802	\
		803	if (SvTYPE(sv) == SVt_PVHV) \
		804	{ \
		805	HE he = hv_fetch_ent((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
		806	\
		807	if (!he) \
		808	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
		809	\
		810	(sv) = SvRV (HeVAL(he)); \
		811	} \
		812	\
773	/* must also be changed inside Coro::Cont::yield */	813	/* must also be changed inside Coro::Cont::yield */ \
774	if (SvROK(arg) && SvOBJECT(SvRV(arg))	814	if (!SvOBJECT(sv) \|\| SvSTASH(sv) != coro_state_stash) \
775	&& SvSTASH(SvRV(arg)) == coro_state_stash)
776	return (struct coro ) SvIV((SV)SvRV(arg));
777
778	croak ("%s() -- %s is not (and contains not) a Coro::State object", funcname, varname);	815	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
779	/NORETURN/	816	\
780	}	817	} while(0)
		818
		819	#define SvSTATE(sv) (struct coro *)SvIV (sv)
781		820
782	static void	821	static void
783	api_transfer(pTHX_ SV prev, SV next, int flags)	822	api_transfer(pTHX_ SV prev, SV next, int flags)
784	{	823	{
785	transfer(aTHX_	824	SV_CORO (prev, "Coro::transfer");
786	sv_to_coro (prev, "Coro::transfer", "prev"),	825	SV_CORO (next, "Coro::transfer");
787	sv_to_coro (next, "Coro::transfer", "next"),	826
788	flags);	827	transfer(aTHX_ SvSTATE(prev), SvSTATE(next), flags);
789	}	828	}
790		829
791	/ Coro ******************************************************************/	830	/ Coro ******************************************************************/
792		831
793	#define PRIO_MAX 3	832	#define PRIO_MAX 3
…		…
803	static int coro_nready;	842	static int coro_nready;
804		843
805	static void	844	static void
806	coro_enq (SV *sv)	845	coro_enq (SV *sv)
807	{	846	{
808	if (SvROK (sv))
809	{
810	SV *hv = SvRV (sv);
811	if (SvTYPE (hv) == SVt_PVHV)	847	if (SvTYPE (sv) == SVt_PVHV)
812	{	848	{
813	SV *xprio = hv_fetch ((HV )hv, "prio", 4, 0);	849	SV *xprio = hv_fetch ((HV )sv, "prio", 4, 0);
814	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;	850	int prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
815		851
816	prio = prio > PRIO_MAX ? PRIO_MAX	852	prio = prio > PRIO_MAX ? PRIO_MAX
817	: prio < PRIO_MIN ? PRIO_MIN	853	: prio < PRIO_MIN ? PRIO_MIN
818	: prio;	854	: prio;
819		855
820	av_push (coro_ready [prio - PRIO_MIN], sv);	856	av_push (coro_ready [prio - PRIO_MIN], sv);
821	coro_nready++;	857	coro_nready++;
822		858
823	return;	859	return;
824	}
825	}	860	}
826		861
827	croak ("Coro::ready tried to enqueue something that is not a coroutine");	862	croak ("Coro::ready tried to enqueue something that is not a coroutine");
828	}	863	}
829		864
…		…
847	}	882	}
848		883
849	static void	884	static void
850	api_ready (SV *coro)	885	api_ready (SV *coro)
851	{	886	{
		887	if (SvROK (coro))
		888	coro = SvRV (coro);
		889
852	coro_enq (SvREFCNT_inc (coro));	890	coro_enq (SvREFCNT_inc (coro));
853	}	891	}
854		892
855	static void	893	static void
856	api_schedule (int cede)	894	api_schedule (void)
857	{	895	{
858	SV prev, next;	896	SV prev, next;
859		897
860	prev = GvSV (coro_current);	898	prev = SvRV (GvSV (coro_current));
861
862	if (cede)
863	coro_enq (SvREFCNT_inc (prev));
864
865	next = coro_deq (PRIO_MIN);	899	next = coro_deq (PRIO_MIN);
866		900
867	if (!next)	901	if (!next)
868	next = SvREFCNT_inc (GvSV (coro_idle));	902	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));
869		903
870	GvSV (coro_current) = SvREFCNT_inc (next);	904	/* free this only after the transfer */
871	transfer (aTHX_	905	coro_mortal = prev;
872	sv_to_coro (prev, "Coro::schedule", "current coroutine"),	906	SV_CORO (prev, "Coro::schedule");
873	sv_to_coro (next, "Coro::schedule", "next coroutine"),	907
		908	SvRV (GvSV (coro_current)) = next;
		909
		910	SV_CORO (next, "Coro::schedule");
		911
		912	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
874	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);	913	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
875	SvREFCNT_dec (next);	914	}
876	SvREFCNT_dec (prev);	915
		916	static void
		917	api_cede (void)
		918	{
		919	coro_enq (SvREFCNT_inc (SvRV (GvSV (coro_current))));
		920
		921	api_schedule ();
877	}	922	}
878		923
879	MODULE = Coro::State PACKAGE = Coro::State	924	MODULE = Coro::State PACKAGE = Coro::State
880		925
881	PROTOTYPES: ENABLE	926	PROTOTYPES: ENABLE
…		…
908	Coro__State coro;	953	Coro__State coro;
909		954
910	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)	955	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
911	croak ("Coro::State::_newprocess expects an arrayref");	956	croak ("Coro::State::_newprocess expects an arrayref");
912		957
913	New (0, coro, 1, struct coro);	958	Newz (0, coro, 1, struct coro);
914		959
915	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	960	coro->args = (AV *)SvREFCNT_inc (SvRV (args));
916	coro->mainstack = 0; /* actual work is done inside transfer */	961	coro->mainstack = 0; /* actual work is done inside transfer */
917	coro->stack = 0;	962	coro->stack = 0;
918		963
		964	/* same as JMPENV_BOOTSTRAP */
		965	/* we might be able to recycle start_env, but safe is safe */
		966	//Zero(&coro->start_env, 1, JMPENV);
		967	coro->start_env.je_ret = -1;
		968	coro->start_env.je_mustcatch = TRUE;
		969
919	RETVAL = coro;	970	RETVAL = coro;
920	OUTPUT:	971	OUTPUT:
921	RETVAL	972	RETVAL
922		973
923	void	974	void
924	transfer(prev, next, flags)	975	transfer(prev, next, flags)
925	Coro::State_or_hashref prev	976	SV *prev
926	Coro::State_or_hashref next	977	SV *next
927	int flags	978	int flags
928	PROTOTYPE: @	979	PROTOTYPE: @
929	CODE:	980	CODE:
930	PUTBACK;	981	PUTBACK;
		982	SV_CORO (next, "Coro::transfer");
		983	SV_CORO (prev, "Coro::transfer");
931	transfer (aTHX_ prev, next, flags);	984	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
932	SPAGAIN;	985	SPAGAIN;
933		986
934	void	987	void
935	DESTROY(coro)	988	DESTROY(coro)
936	Coro::State coro	989	Coro::State coro
…		…
952		1005
953	coro->mainstack = 0;	1006	coro->mainstack = 0;
954	}	1007	}
955		1008
956	deallocate_stack (coro);	1009	deallocate_stack (coro);
957		1010	SvREFCNT_dec (coro->args);
958	Safefree (coro);	1011	Safefree (coro);
959		1012
960	void	1013	void
961	flush()	1014	flush()
962	CODE:	1015	CODE:
…		…
989	SV *sv;	1042	SV *sv;
990	AV *defav = GvAV (PL_defgv);	1043	AV *defav = GvAV (PL_defgv);
991	struct coro prev, next;	1044	struct coro prev, next;
992		1045
993	if (!returnstk)	1046	if (!returnstk)
994	returnstk = SvRV (get_sv ("Coro::Cont::return", FALSE));	1047	returnstk = SvRV ((SV *)get_sv ("Coro::Cont::return", FALSE));
995		1048
996	/* set up @_ -- ugly */	1049	/* set up @_ -- ugly */
997	av_clear (defav);	1050	av_clear (defav);
998	av_fill (defav, items - 1);	1051	av_fill (defav, items - 1);
999	while (items--)	1052	while (items--)
…		…
1031		1084
1032	{	1085	{
1033	SV *sv = perl_get_sv("Coro::API", 1);	1086	SV *sv = perl_get_sv("Coro::API", 1);
1034		1087
1035	coroapi.schedule = api_schedule;	1088	coroapi.schedule = api_schedule;
		1089	coroapi.cede = api_cede;
1036	coroapi.ready = api_ready;	1090	coroapi.ready = api_ready;
1037	coroapi.nready = &coro_nready;	1091	coroapi.nready = &coro_nready;
1038	coroapi.current = coro_current;	1092	coroapi.current = coro_current;
1039		1093
1040	GCoroAPI = &coroapi;	1094	GCoroAPI = &coroapi;
…		…
1059	RETVAL	1113	RETVAL
1060		1114
1061	void	1115	void
1062	schedule(...)	1116	schedule(...)
1063	PROTOTYPE:	1117	PROTOTYPE:
1064	ALIAS:
1065	cede = 1
1066	CODE:	1118	CODE:
1067	api_schedule (ix);	1119	api_schedule ();
1068		1120
		1121	void
		1122	cede(...)
		1123	PROTOTYPE:
		1124	CODE:
		1125	api_cede ();
		1126

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Comparing Coro/Coro/State.xs (file contents): Revision 1.38 by root, Wed Nov 7 00:21:06 2001 UTC vs. Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.38 by root, Wed Nov 7 00:21:06 2001 UTC vs.
Revision 1.47 by pcg, Sat Nov 15 03:53:10 2003 UTC