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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC

…		…
27	# ifndef IS_PADCONST	27	# ifndef IS_PADCONST
28	# define IS_PADCONST(v) 0	28	# define IS_PADCONST(v) 0
29	# endif	29	# endif
30	#endif	30	#endif
31		31
		32	#include <stdio.h>
32	#include <errno.h>	33	#include <errno.h>
33		34
34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	35	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
35	# undef STACKGUARD	36	# undef STACKGUARD
36	#endif	37	#endif
…		…
57	# else	58	# else
58	# define BOOT_PAGESIZE	59	# define BOOT_PAGESIZE
59	# endif	60	# endif
60	#endif	61	#endif
61		62
62	#define SUB_INIT "Coro::State::initialize"
63
64	/* The next macro should declare a variable stacklevel that contains and approximation	63	/* The next macro should declare a variable stacklevel that contains and approximation
65	* to the current C stack pointer. Its property is that it changes with each call	64	* to the current C stack pointer. Its property is that it changes with each call
66	* and should be unique. */	65	* and should be unique. */
		66	#define dSTACKLEVEL int stacklevel
67	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define STACKLEVEL ((void *)&stacklevel)
68		68
69	#define IN_DESTRUCT (PL_main_cv == Nullcv)	69	#define IN_DESTRUCT (PL_main_cv == Nullcv)
70		70
71	#define labs(l) ((l) >= 0 ? (l) : -(l))	71	#define labs(l) ((l) >= 0 ? (l) : -(l))
72		72
73	#include "CoroAPI.h"	73	#include "CoroAPI.h"
		74
		75	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
74		76
75	#ifdef USE_ITHREADS	77	#ifdef USE_ITHREADS
76	static perl_mutex coro_mutex;	78	static perl_mutex coro_mutex;
77	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	79	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
78	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	80	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
84	static struct CoroAPI coroapi;	86	static struct CoroAPI coroapi;
85	static AV main_mainstack; / used to differentiate between $main and others */	87	static AV main_mainstack; / used to differentiate between $main and others */
86	static HV coro_state_stash, coro_stash;	88	static HV coro_state_stash, coro_stash;
87	static SV coro_mortal; / will be freed after next transfer */	89	static SV coro_mortal; / will be freed after next transfer */
88		90
89	/* this is actually not only the c stack but also c registers etc... */	91	/* this is a structure representing a c-level coroutine */
90	typedef struct {	92	typedef struct coro_stack {
91	int refcnt; /* pointer reference counter */	93	struct coro_stack *next;
92	int usecnt; /* shared by how many coroutines */
93	int gencnt; /* generation counter */
94		94
95	coro_context cctx;	95	void idle_sp; / original stacklevel when coroutine was created */
96
97	void *sptr;	96	void *sptr;
98	long ssize; /* positive == mmap, otherwise malloc */	97	long ssize; /* positive == mmap, otherwise malloc */
		98
		99	/* cpu state */
		100	coro_context cctx;
		101	JMPENV *top_env;
99	} coro_stack;	102	} coro_stack;
100		103
		104	/* the (fake) coro_stack representing the main program */
		105	static coro_stack *main_stack;
		106
		107	/* this is a structure representing a perl-level coroutine */
101	struct coro {	108	struct coro {
102	/* the optional C context */	109	/* the c coroutine allocated to this perl coroutine, if any */
103	coro_stack *stack;	110	coro_stack *stack;
104	void *cursp;	111
		112	/* data associated with this coroutine (initial args) */
		113	AV *args;
105	int gencnt;	114	int refcnt;
106		115
107	/* optionally saved, might be zero */	116	/* optionally saved, might be zero */
108	AV *defav;	117	AV *defav;
109	SV *defsv;	118	SV *defsv;
110	SV *errsv;	119	SV *errsv;
…		…
140	OP **retstack;	149	OP **retstack;
141	I32 retstack_ix;	150	I32 retstack_ix;
142	I32 retstack_max;	151	I32 retstack_max;
143	PMOP *curpm;	152	PMOP *curpm;
144	COP *curcop;	153	COP *curcop;
145	JMPENV *top_env;
146		154
147	/* coro process data */	155	/* coro process data */
148	int prio;	156	int prio;
149
150	/* data associated with this coroutine (initial args) */
151	AV *args;
152	int refcnt;
153	};	157	};
154		158
155	typedef struct coro *Coro__State;	159	typedef struct coro *Coro__State;
156	typedef struct coro *Coro__State_or_hashref;	160	typedef struct coro *Coro__State_or_hashref;
157		161
…		…
300	PL_retstack_ix = c->retstack_ix;	304	PL_retstack_ix = c->retstack_ix;
301	PL_retstack_max = c->retstack_max;	305	PL_retstack_max = c->retstack_max;
302	#endif	306	#endif
303	PL_curpm = c->curpm;	307	PL_curpm = c->curpm;
304	PL_curcop = c->curcop;	308	PL_curcop = c->curcop;
305	PL_top_env = c->top_env;
306		309
307	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	310	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
308	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	311	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
309	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	312	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
310		313
…		…
428	c->retstack_ix = PL_retstack_ix;	431	c->retstack_ix = PL_retstack_ix;
429	c->retstack_max = PL_retstack_max;	432	c->retstack_max = PL_retstack_max;
430	#endif	433	#endif
431	c->curpm = PL_curpm;	434	c->curpm = PL_curpm;
432	c->curcop = PL_curcop;	435	c->curcop = PL_curcop;
433	c->top_env = PL_top_env;
434	}	436	}
435		437
436	/*	438	/*
437	* allocate various perl stacks. This is an exact copy	439	* allocate various perl stacks. This is an exact copy
438	* of perl.c:init_stacks, except that it uses less memory	440	* of perl.c:init_stacks, except that it uses less memory
…		…
532	Safefree (PL_retstack);	534	Safefree (PL_retstack);
533	#endif	535	#endif
534	}	536	}
535		537
536	static void	538	static void
537	allocate_stack (Coro__State ctx, int alloc)	539	setup_coro (struct coro *coro)
538	{
539	coro_stack *stack;
540
541	New (0, stack, 1, coro_stack);
542
543	stack->refcnt = 1;
544	stack->usecnt = 1;
545	stack->gencnt = ctx->gencnt = 0;
546
547	if (alloc)
548	{
549	#if HAVE_MMAP
550	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
551	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
552	if (stack->sptr != (void *)-1)
553	{
554	# if STACKGUARD
555	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
556	# endif
557	}
558	else
559	#endif
560	{
561	stack->ssize = - (STACKSIZE * (long)sizeof (long));
562	New (0, stack->sptr, STACKSIZE, long);
563	}
564	}
565	else
566	stack->sptr = 0;
567
568	ctx->stack = stack;
569	}
570
571	static void
572	deallocate_stack (Coro__State ctx)
573	{
574	coro_stack *stack = ctx->stack;
575
576	ctx->stack = 0;
577
578	if (stack)
579	{
580	if (!--stack->refcnt)
581	{
582	#ifdef HAVE_MMAP
583	if (stack->ssize > 0 && stack->sptr)
584	munmap (stack->sptr, stack->ssize);
585	else
586	#endif
587	Safefree (stack->sptr);
588
589	Safefree (stack);
590	}
591	else if (ctx->gencnt == stack->gencnt)
592	--stack->usecnt;
593	}
594	}
595
596	static void
597	setup_coro (void *arg)
598	{	540	{
599	/*	541	/*
600	* emulate part of the perl startup here.	542	* emulate part of the perl startup here.
601	*/	543	*/
602	dTHX;	544	dTHX;
603	dSP;	545	dSP;
604	Coro__State ctx = (Coro__State)arg;	546	UNOP myop;
605	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	547	SV sub_init = (SV )get_cv ("Coro::State::coro_init", FALSE);
606		548
607	coro_init_stacks (aTHX);	549	coro_init_stacks (aTHX);
608	/PL_curcop = 0;/	550	/PL_curcop = 0;/
609	/PL_in_eval = PL_in_eval;/ /* inherit */	551	/PL_in_eval = PL_in_eval;/ /* inherit */
610	SvREFCNT_dec (GvAV (PL_defgv));	552	SvREFCNT_dec (GvAV (PL_defgv));
611	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	553	GvAV (PL_defgv) = coro->args; coro->args = 0;
612		554
613	SPAGAIN;	555	SPAGAIN;
614		556
615	if (ctx->stack)
616	{
617	ctx->cursp = 0;
618
619	PUSHMARK(SP);
620	PUTBACK;
621	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);
622
623	if (SvTRUE (ERRSV))
624	croak (NULL);
625	else
626	croak ("FATAL: CCTXT coroutine returned!");
627	}
628	else
629	{
630	UNOP myop;
631
632	Zero(&myop, 1, UNOP);	557	Zero (&myop, 1, UNOP);
633	myop.op_next = Nullop;	558	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;	559	myop.op_flags = OPf_WANT_VOID;
635		560
636	PL_op = (OP *)&myop;	561	PL_op = (OP *)&myop;
637		562
638	PUSHMARK(SP);	563	PUSHMARK(SP);
639	XPUSHs (sub_init);	564	XPUSHs (sub_init);
640	/*
641	* the next line is slightly wrong, as PL_op->op_next
642	* is actually being executed so we skip the first op.
643	* that doesn't matter, though, since it is only
644	* pp_nextstate and we never return...
645	* ah yes, and I don't care anyways ;)
646	*/
647	PUTBACK;	565	PUTBACK;
648	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
649	SPAGAIN;	567	SPAGAIN;
650		568
651	ENTER; /* necessary e.g. for dounwind */	569	ENTER; /* necessary e.g. for dounwind */
652	}
653	}	570	}
654		571
655	static void	572	static void
656	continue_coro (void *arg)	573	free_coro_mortal ()
657	{	574	{
658	/*
659	* this is a _very_ stripped down perl interpreter ;)
660	*/
661	dTHX;
662	Coro__State ctx = (Coro__State)arg;
663
664	PL_top_env = &PL_start_env;
665
666	ctx->cursp = 0;
667	PL_op = PL_op->op_next;
668	CALLRUNOPS(aTHX);
669
670	abort ();
671	}
672
673	/* never call directly, always through the coro_state_transfer global variable */
674	static void
675	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
676	{
677	dSTACKLEVEL;
678
679	if (prev != next)
680	{
681	/* has this coro been created yet? */
682	if (next->mainstack)
683	{
684	LOCK;
685	SAVE (prev, flags);
686	LOAD (next);
687	UNLOCK;
688
689	/* mark this state as in-use */
690	next->mainstack = 0;
691	next->tmps_ix = -2;
692
693	/* stacklevel changed? if yes, grab the stack for us! */
694	if (flags & TRANSFER_SAVE_CCTXT)
695	{
696	if (!prev->stack)
697	allocate_stack (prev, 0);
698	else if (prev->cursp != stacklevel
699	&& prev->stack->usecnt > 1)
700	{
701	prev->gencnt = ++prev->stack->gencnt;
702	prev->stack->usecnt = 1;
703	}
704
705	/* has our stack been invalidated? */
706	if (next->stack && next->stack->gencnt != next->gencnt)
707	{
708	deallocate_stack (next);
709	allocate_stack (next, 1);
710	coro_create (&(next->stack->cctx),
711	continue_coro, (void *)next,
712	next->stack->sptr, labs (next->stack->ssize));
713	}
714
715	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
716	prev->cursp = stacklevel;
717	/* don't add any code here */
718	}
719	else
720	next->cursp = stacklevel;
721	}
722	else if (next->tmps_ix == -2)
723	croak ("tried to transfer to running coroutine");
724	else
725	{
726	LOCK;
727	SAVE (prev, -1); /* first get rid of the old state */
728	UNLOCK;
729
730	/* create the coroutine for the first time */
731	if (flags & TRANSFER_SAVE_CCTXT)
732	{
733	if (!prev->stack)
734	allocate_stack (prev, 0);
735
736	/* the new coroutine starts with start_env again */
737	PL_top_env = &PL_start_env;
738
739	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
740	{
741	setup_coro (next);
742	next->cursp = stacklevel;
743
744	prev->stack->refcnt++;
745	prev->stack->usecnt++;
746	next->stack = prev->stack;
747	next->gencnt = prev->gencnt;
748	}
749	else
750	{
751	assert (!next->stack);
752	allocate_stack (next, 1);
753	coro_create (&(next->stack->cctx),
754	setup_coro, (void *)next,
755	next->stack->sptr, labs (next->stack->ssize));
756	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
757	prev->cursp = stacklevel;
758	/* don't add any code here */
759	}
760	}
761	else
762	{
763	setup_coro (next);
764	next->cursp = stacklevel;
765	}
766	}
767	}
768
769	LOCK;
770	if (coro_mortal)	575	if (coro_mortal)
771	{	576	{
772	SvREFCNT_dec (coro_mortal);	577	SvREFCNT_dec (coro_mortal);
773	coro_mortal = 0;	578	coro_mortal = 0;
774	}	579	}
		580	}
		581
		582	static void
		583	coro_run (void *arg)
		584	{
		585	/*
		586	* this is a _very_ stripped down perl interpreter ;)
		587	*/
		588	dTHX;
		589	PL_top_env = &PL_start_env;
		590
775	UNLOCK;	591	UNLOCK;
		592
		593	sv_setiv (get_sv ("Coro::State::cctx_stack", FALSE), PTR2IV ((coro_stack *)arg));
		594	sv_setiv (get_sv ("Coro::State::cctx_restartop", FALSE), PTR2IV (PL_op));
		595	PL_restartop = CvSTART (get_cv ("Coro::State::cctx_init", FALSE));
		596
		597	/* somebody will hit me for both perl_run and PL_restart_op */
		598	perl_run (aTHX_ PERL_GET_CONTEXT);
		599
		600	abort ();
		601	}
		602
		603	static coro_stack *
		604	stack_new ()
		605	{
		606	coro_stack *stack;
		607
		608	New (0, stack, 1, coro_stack);
		609
		610	#if HAVE_MMAP
		611
		612	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		613	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		614
		615	if (stack->sptr == (void *)-1)
		616	{
		617	perror ("FATAL: unable to mmap stack for coroutine");
		618	_exit (EXIT_FAILURE);
		619	}
		620
		621	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		622
		623	#else
		624
		625	stack->ssize = STACKSIZE * (long)sizeof (long);
		626	New (0, stack->sptr, STACKSIZE, long);
		627
		628	if (!stack->sptr)
		629	{
		630	perror (stderr, "FATAL: unable to malloc stack for coroutine");
		631	_exit (EXIT_FAILURE);
		632	}
		633
		634	#endif
		635
		636	coro_create (&stack->cctx, coro_run, (void *)stack, stack->sptr, stack->ssize);
		637
		638	return stack;
		639	}
		640
		641	static void
		642	stack_free (coro_stack *stack)
		643	{
		644	if (!stack \|\| stack == main_stack)
		645	return;
		646
		647	#if HAVE_MMAP
		648	munmap (stack->sptr, stack->ssize);
		649	#else
		650	Safefree (stack->sptr);
		651	#endif
		652
		653	Safefree (stack);
		654	}
		655
		656	static coro_stack *stack_first;
		657
		658	static coro_stack *
		659	stack_get ()
		660	{
		661	coro_stack *stack;
		662
		663	if (stack_first)
		664	{
		665	stack = stack_first;
		666	stack_first = stack->next;
		667	}
		668	else
		669	{
		670	stack = stack_new ();
		671	PL_op = PL_op->op_next;
		672	}
		673
		674	return stack;
		675	}
		676
		677	static void
		678	stack_put (coro_stack *stack)
		679	{
		680	stack->next = stack_first;
		681	stack_first = stack;
		682	}
		683
		684	/* never call directly, always through the coro_state_transfer global variable */
		685	static void
		686	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
		687	{
		688	dSTACKLEVEL;
		689
		690	/* sometimes transfer is only called to set idle_sp */
		691	if (flags == TRANSFER_SET_STACKLEVEL)
		692	((coro_stack *)prev)->idle_sp = STACKLEVEL;
		693	else if (prev != next)
		694	{
		695	coro_stack *prev__stack;
		696
		697	LOCK;
		698
		699	if (next->mainstack)
		700	{
		701	/* coroutine already started */
		702	SAVE (prev, flags);
		703	LOAD (next);
		704	}
		705	else
		706	{
		707	/* need to start coroutine */
		708	/* first get rid of the old state */
		709	SAVE (prev, -1);
		710	/* setup coroutine call */
		711	setup_coro (next);
		712	/* need a stack */
		713	next->stack = 0;
		714	}
		715
		716	prev__stack = prev->stack;
		717
		718	/* possibly "free" the stack */
		719	if (prev__stack->idle_sp == STACKLEVEL)
		720	{
		721	stack_put (prev__stack);
		722	prev->stack = 0;
		723	}
		724
		725	if (!next->stack)
		726	next->stack = stack_get ();
		727
		728	if (prev__stack != next->stack)
		729	{
		730	prev__stack->top_env = PL_top_env;
		731	PL_top_env = next->stack->top_env;
		732	coro_transfer (&prev__stack->cctx, &next->stack->cctx);
		733	}
		734
		735	free_coro_mortal ();
		736
		737	UNLOCK;
		738	}
776	}	739	}
777		740
778	/* use this function pointer to call the above function */	741	/* use this function pointer to call the above function */
779	/* this is done to increase chances of the compiler not inlining the call */	742	/* this is done to increase chances of the compiler not inlining the call */
		743	/* not static to make it even harder for the compiler (and theoretically impossible in most cases */
780	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	744	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		745
		746	struct transfer_args
		747	{
		748	struct coro prev, next;
		749	int flags;
		750	};
		751
		752	#define TRANSFER(ta) coro_state_transfer ((ta).prev, (ta).next, (ta).flags)
781		753
782	static void	754	static void
783	coro_state_destroy (struct coro *coro)	755	coro_state_destroy (struct coro *coro)
784	{	756	{
785	if (coro->refcnt--)	757	if (coro->refcnt--)
…		…
797	LOAD ((&temp)); /* this will get rid of defsv etc.. */	769	LOAD ((&temp)); /* this will get rid of defsv etc.. */
798		770
799	coro->mainstack = 0;	771	coro->mainstack = 0;
800	}	772	}
801		773
802	deallocate_stack (coro);	774	stack_free (coro->stack);
803	SvREFCNT_dec (coro->args);	775	SvREFCNT_dec (coro->args);
804	Safefree (coro);	776	Safefree (coro);
805	}	777	}
806		778
807	static int	779	static int
…		…
848	assert (mg->mg_type == PERL_MAGIC_ext);	820	assert (mg->mg_type == PERL_MAGIC_ext);
849	return (struct coro *)mg->mg_ptr;	821	return (struct coro *)mg->mg_ptr;
850	}	822	}
851		823
852	static void	824	static void
		825	prepare_transfer (pTHX_ struct transfer_args ta, SV prev, SV *next, int flags)
		826	{
		827	ta->prev = SvSTATE (prev);
		828	ta->next = SvSTATE (next);
		829	ta->flags = flags;
		830	}
		831
		832	static void
853	api_transfer (pTHX_ SV prev, SV next, int flags)	833	api_transfer (SV prev, SV next, int flags)
854	{	834	{
855	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	835	dTHX;
		836	struct transfer_args ta;
		837
		838	prepare_transfer (aTHX_ &ta, prev, next, flags);
		839	TRANSFER (ta);
856	}	840	}
857		841
858	/ Coro ******************************************************************/	842	/ Coro ******************************************************************/
859		843
860	#define PRIO_MAX 3	844	#define PRIO_MAX 3
…		…
914	coro_enq (aTHX_ SvREFCNT_inc (coro));	898	coro_enq (aTHX_ SvREFCNT_inc (coro));
915	UNLOCK;	899	UNLOCK;
916	}	900	}
917		901
918	static void	902	static void
919	api_schedule (void)	903	prepare_schedule (aTHX_ struct transfer_args *ta)
920	{	904	{
921	dTHX;
922
923	SV prev, next;	905	SV current, prev, *next;
		906
		907	LOCK;
		908
924	SV *current = GvSV (coro_current);	909	current = GvSV (coro_current);
925		910
926	for (;;)	911	for (;;)
927	{	912	{
928	LOCK;	913	LOCK;
929		914
…		…
951		936
952	prev = SvRV (current);	937	prev = SvRV (current);
953	SvRV (current) = next;	938	SvRV (current) = next;
954		939
955	/* free this only after the transfer */	940	/* free this only after the transfer */
		941	free_coro_mortal ();
956	coro_mortal = prev;	942	coro_mortal = prev;
957		943
		944	ta->prev = SvSTATE (prev);
		945	ta->next = SvSTATE (next);
		946	ta->flags = TRANSFER_SAVE_ALL;
		947
958	UNLOCK;	948	UNLOCK;
959
960	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),
961	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
962	}	949	}
963		950
964	static void	951	static void
965	api_cede (void)	952	prepare_cede (aTHX_ struct transfer_args *ta)
966	{	953	{
967	dTHX;
968
969	LOCK;	954	LOCK;
970	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	955	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));
971	UNLOCK;	956	UNLOCK;
972		957
		958	prepare_schedule (ta);
		959	}
		960
		961	static void
973	api_schedule ();	962	api_schedule (void)
		963	{
		964	dTHX;
		965	struct transfer_args ta;
		966
		967	prepare_schedule (&ta);
		968	TRANSFER (ta);
		969	}
		970
		971	static void
		972	api_cede (void)
		973	{
		974	dTHX;
		975	struct transfer_args ta;
		976
		977	prepare_cede (&ta);
		978	TRANSFER (ta);
974	}	979	}
975		980
976	MODULE = Coro::State PACKAGE = Coro::State	981	MODULE = Coro::State PACKAGE = Coro::State
977		982
978	PROTOTYPES: DISABLE	983	PROTOTYPES: DISABLE
…		…
987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	992	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
988		993
989	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	994	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
990	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	995	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
991	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	996	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
992	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
993		997
994	main_mainstack = PL_mainstack;	998	main_mainstack = PL_mainstack;
995		999
996	coroapi.ver = CORO_API_VERSION;	1000	coroapi.ver = CORO_API_VERSION;
997	coroapi.transfer = api_transfer;	1001	coroapi.transfer = api_transfer;
		1002
		1003	Newz (0, main_stack, 1, coro_stack);
		1004	main_stack->idle_sp = (void *)-1;
998		1005
999	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1006	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1000	}	1007	}
1001		1008
1002	SV *	1009	SV *
…		…
1008	int i;	1015	int i;
1009		1016
1010	Newz (0, coro, 1, struct coro);	1017	Newz (0, coro, 1, struct coro);
1011	coro->args = newAV ();	1018	coro->args = newAV ();
1012		1019
1013	for (i = 1; i < items; i++)
1014	av_push (coro->args, newSVsv (ST (i)));
1015
1016	/coro->mainstack = 0; //actual work is done inside transfer /
1017	/coro->stack = 0;/
1018
1019	hv = newHV ();	1020	hv = newHV ();
1020	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1021	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1021	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1022	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		1023
		1024	for (i = 1; i < items; i++)
		1025	av_push (coro->args, newSVsv (ST (i)));
		1026
		1027	coro->stack = main_stack;
		1028	/coro->mainstack = 0; //actual work is done inside transfer /
		1029	/coro->stack = 0;/
1022	}	1030	}
1023	OUTPUT:	1031	OUTPUT:
1024	RETVAL	1032	RETVAL
1025		1033
1026	void	1034	void
1027	transfer(prev, next, flags)	1035	transfer (...)
1028	SV *prev	1036	ALIAS:
1029	SV *next	1037	Coro::schedule = 1
1030	int flags	1038	Coro::cede = 2
		1039	_set_stacklevel = 3
1031	CODE:	1040	CODE:
1032	PUTBACK;
1033	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
1034	SPAGAIN;
1035
1036	int
1037	prio (Coro::State coro, int newprio = 0)
1038	ALIAS:
1039	nice = 1
1040	CODE:
1041	{	1041	{
1042	RETVAL = coro->prio;	1042	struct transfer_args ta;
1043		1043
1044	if (items > 1)	1044	switch (ix)
1045	{	1045	{
		1046	case 0:
1046	if (ix)	1047	if (items != 3)
1047	newprio += coro->prio;	1048	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);
1048		1049
1049	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1050	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));
1050	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1051	break;
1051		1052
1052	coro->prio = newprio;	1053	case 1:
		1054	prepare_schedule (&ta);
		1055	break;
		1056
		1057	case 2:
		1058	prepare_cede (&ta);
		1059	break;
		1060
		1061	case 3:
		1062	ta.prev = (struct coro )INT2PTR (coro_stack , SvIV (ST (0)));
		1063	ta.next = 0;
		1064	ta.flags = TRANSFER_SET_STACKLEVEL;
		1065	break;
1053	}	1066	}
		1067
		1068	TRANSFER (ta);
1054	}	1069	}
1055		1070
1056	void	1071	void
1057	_clone_state_from (SV dst, SV src)	1072	_clone_state_from (SV dst, SV src)
1058	CODE:	1073	CODE:
…		…
1062	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);	1077	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1063		1078
1064	++coro_src->refcnt;	1079	++coro_src->refcnt;
1065	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;	1080	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1066	}	1081	}
		1082
		1083	void
		1084	_nonlocal_goto (IV nextop)
		1085	CODE:
		1086	/* uuh, somebody will kill me again for this */
		1087	PL_op->op_next = INT2PTR (OP *, nextop);
1067		1088
1068	void	1089	void
1069	_exit (code)	1090	_exit (code)
1070	int code	1091	int code
1071	PROTOTYPE: $	1092	PROTOTYPE: $
…		…
1138	sv_setiv (sv, (IV)&coroapi);	1159	sv_setiv (sv, (IV)&coroapi);
1139	SvREADONLY_on (sv);	1160	SvREADONLY_on (sv);
1140	}	1161	}
1141	}	1162	}
1142		1163
1143	#if !PERL_MICRO	1164	int
		1165	prio (Coro::State coro, int newprio = 0)
		1166	ALIAS:
		1167	nice = 1
		1168	CODE:
		1169	{
		1170	RETVAL = coro->prio;
		1171
		1172	if (items > 1)
		1173	{
		1174	if (ix)
		1175	newprio += coro->prio;
		1176
		1177	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1178	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1179
		1180	coro->prio = newprio;
		1181	}
		1182	}
1144		1183
1145	void	1184	void
1146	ready (self)	1185	ready (SV *self)
1147	SV * self
1148	PROTOTYPE: $	1186	PROTOTYPE: $
1149	CODE:	1187	CODE:
1150	api_ready (self);	1188	api_ready (self);
1151
1152	#endif
1153		1189
1154	int	1190	int
1155	nready (...)	1191	nready (...)
1156	PROTOTYPE:	1192	PROTOTYPE:
1157	CODE:	1193	CODE:
1158	RETVAL = coro_nready;	1194	RETVAL = coro_nready;
1159	OUTPUT:	1195	OUTPUT:
1160	RETVAL	1196	RETVAL
1161		1197
1162	void	1198	MODULE = Coro::State PACKAGE = Coro::AIO
1163	schedule (...)
1164	PROTOTYPE:
1165	CODE:
1166	api_schedule ();
1167		1199
1168	void
1169	cede (...)
1170	PROTOTYPE:
1171	CODE:
1172	api_cede ();
1173
1174	# and these are hacks
1175	SV *	1200	SV *
1176	_aio_get_state ()	1201	_get_state ()
1177	CODE:	1202	CODE:
1178	{	1203	{
1179	struct {	1204	struct {
1180	int errorno;	1205	int errorno;
1181	int laststype;	1206	int laststype;
…		…
1192	}	1217	}
1193	OUTPUT:	1218	OUTPUT:
1194	RETVAL	1219	RETVAL
1195		1220
1196	void	1221	void
1197	_aio_set_state (char *data_)	1222	_set_state (char *data_)
1198	PROTOTYPE: $	1223	PROTOTYPE: $
1199	CODE:	1224	CODE:
1200	{	1225	{
1201	struct {	1226	struct {
1202	int errorno;	1227	int errorno;

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs. Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.88 by root, Fri Nov 24 15:34:33 2006 UTC vs.
Revision 1.92 by root, Sun Nov 26 02:16:19 2006 UTC