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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.77 by root, Tue Oct 31 23:55:33 2006 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC

…		…
29	# endif	29	# endif
30	#endif	30	#endif
31		31
32	#include <errno.h>	32	#include <errno.h>
33		33
		34	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		35	# undef STACKGUARD
		36	#endif
		37
		38	#ifndef STACKGUARD
		39	# define STACKGUARD 0
		40	#endif
		41
34	#ifdef HAVE_MMAP	42	#ifdef HAVE_MMAP
35	# include <unistd.h>	43	# include <unistd.h>
36	# include <sys/mman.h>	44	# include <sys/mman.h>
37	# ifndef MAP_ANONYMOUS	45	# ifndef MAP_ANONYMOUS
38	# ifdef MAP_ANON	46	# ifdef MAP_ANON
39	# define MAP_ANONYMOUS MAP_ANON	47	# define MAP_ANONYMOUS MAP_ANON
40	# else	48	# else
41	# undef HAVE_MMAP	49	# undef HAVE_MMAP
42	# endif	50	# endif
43	# endif	51	# endif
		52	# include <limits.h>
		53	# ifndef PAGESIZE
		54	# define PAGESIZE pagesize
		55	# define BOOT_PAGESIZE pagesize = sysconf (_SC_PAGESIZE)
		56	static long pagesize;
		57	# else
		58	# define BOOT_PAGESIZE
44	#endif	59	# endif
		60	#endif
45		61
46	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
47	#define UCORO_STATE "_coro_state"
48		63
49	/* The next macro should declare a variable stacklevel that contains and approximation	64	/* The next macro should declare a variable stacklevel that contains and approximation
50	* to the current C stack pointer. Its property is that it changes with each call	65	* to the current C stack pointer. Its property is that it changes with each call
51	* and should be unique. */	66	* and should be unique. */
52	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
…		…
66	# define UNLOCK (void)0	81	# define UNLOCK (void)0
67	#endif	82	#endif
68		83
69	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
70	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
71	static HV *coro_state_stash;	86	static HV coro_state_stash, coro_stash;
72	static SV *ucoro_state_sv;
73	static U32 ucoro_state_hash;
74	static SV coro_mortal; / will be freed after next transfer */	87	static SV coro_mortal; / will be freed after next transfer */
75		88
76	/* this is actually not only the c stack but also c registers etc... */	89	/* this is actually not just the c stack but also c registers etc... */
77	typedef struct {	90	typedef struct coro_stack {
78	int refcnt; /* pointer reference counter */	91	struct coro_stack *next;
79	int usecnt; /* shared by how many coroutines */
80	int gencnt; /* generation counter */
81		92
82	coro_context cctx;	93	void *idle_sp;
83
84	void *sptr;	94	void *sptr;
85	long ssize; /* positive == mmap, otherwise malloc */	95	long ssize; /* positive == mmap, otherwise malloc */
		96
		97	/* cpu state */
		98	coro_context cctx;
86	} coro_stack;	99	} coro_stack;
87		100
		101	static coro_stack *main_stack;
		102
88	struct coro {	103	struct coro {
89	/* the top-level JMPENV for each coroutine, needed to catch dies. */
90	JMPENV start_env;
91
92	/* the optional C context */
93	coro_stack *stack;
94	void *cursp;
95	int gencnt;
96
97	/* optionally saved, might be zero */	104	/* optionally saved, might be zero */
98	AV *defav;	105	AV *defav;
99	SV *defsv;	106	SV *defsv;
100	SV *errsv;	107	SV *errsv;
101		108
102	/* saved global state not related to stacks */	109	/* saved global state not related to stacks */
103	U8 dowarn;	110	U8 dowarn;
104	I32 in_eval;	111	I32 in_eval;
		112
		113	/* the c stack, if any */
		114	coro_stack *stack;
105		115
106	/* the stacks and related info (callchain etc..) */	116	/* the stacks and related info (callchain etc..) */
107	PERL_SI *curstackinfo;	117	PERL_SI *curstackinfo;
108	AV *curstack;	118	AV *curstack;
109	AV *mainstack;	119	AV *mainstack;
…		…
132	I32 retstack_max;	142	I32 retstack_max;
133	PMOP *curpm;	143	PMOP *curpm;
134	COP *curcop;	144	COP *curcop;
135	JMPENV *top_env;	145	JMPENV *top_env;
136		146
		147	/* coro process data */
		148	int prio;
		149
137	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
138	AV *args;	151	AV *args;
		152	int refcnt;
139	};	153	};
140		154
141	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
142	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
143		157
…		…
147	AV *padlist = CvPADLIST (cv);	161	AV *padlist = CvPADLIST (cv);
148	AV newpadlist, newpad;	162	AV newpadlist, newpad;
149		163
150	newpadlist = newAV ();	164	newpadlist = newAV ();
151	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
		166	#if PERL_VERSION < 9
152	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	167	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
		168	#else
		169	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
		170	#endif
153	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
154	--AvFILLp (padlist);	172	--AvFILLp (padlist);
155		173
156	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
157	av_store (newpadlist, 1, (SV *)newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
…		…
514	Safefree (PL_retstack);	532	Safefree (PL_retstack);
515	#endif	533	#endif
516	}	534	}
517		535
518	static void	536	static void
519	allocate_stack (Coro__State ctx, int alloc)	537	setup_coro (struct coro *coro)
520	{
521	coro_stack *stack;
522
523	New (0, stack, 1, coro_stack);
524
525	stack->refcnt = 1;
526	stack->usecnt = 1;
527	stack->gencnt = ctx->gencnt = 0;
528
529	if (alloc)
530	{
531	#if HAVE_MMAP
532	stack->ssize = STACKSIZE * sizeof (long); /* mmap should do allocate-on-write for us */
533	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
534	if (stack->sptr == (void *)-1)
535	#endif
536	{
537	stack->ssize = - (STACKSIZE * (long)sizeof (long));
538	New (0, stack->sptr, STACKSIZE, long);
539	}
540	}
541	else
542	stack->sptr = 0;
543
544	ctx->stack = stack;
545	}
546
547	static void
548	deallocate_stack (Coro__State ctx)
549	{
550	coro_stack *stack = ctx->stack;
551
552	ctx->stack = 0;
553
554	if (stack)
555	{
556	if (!--stack->refcnt)
557	{
558	#ifdef HAVE_MMAP
559	if (stack->ssize > 0 && stack->sptr)
560	munmap (stack->sptr, stack->ssize);
561	else
562	#endif
563	Safefree (stack->sptr);
564
565	Safefree (stack);
566	}
567	else if (ctx->gencnt == stack->gencnt)
568	--stack->usecnt;
569	}
570	}
571
572	static void
573	setup_coro (void *arg)
574	{	538	{
575	/*	539	/*
576	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
577	*/	541	*/
578	dTHX;	542	dTHX;
579	dSP;	543	dSP;
580	Coro__State ctx = (Coro__State)arg;	544	UNOP myop;
581	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
582		546
583	coro_init_stacks (aTHX);	547	coro_init_stacks (aTHX);
584	/PL_curcop = 0;/	548	/PL_curcop = 0;/
585	/PL_in_eval = PL_in_eval;/ /* inherit */	549	/PL_in_eval = PL_in_eval;/ /* inherit */
586	SvREFCNT_dec (GvAV (PL_defgv));	550	SvREFCNT_dec (GvAV (PL_defgv));
587	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	551	GvAV (PL_defgv) = coro->args; coro->args = 0;
588		552
589	SPAGAIN;	553	SPAGAIN;
590		554
591	if (ctx->stack)	555	Zero (&myop, 1, UNOP);
592	{	556	myop.op_next = Nullop;
593	ctx->cursp = 0;	557	myop.op_flags = OPf_WANT_VOID;
594		558
		559	PL_op = (OP *)&myop;
		560
595	PUSHMARK(SP);	561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
596	PUTBACK;	563	PUTBACK;
597	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		565	SPAGAIN;
598		566
599	if (SvTRUE (ERRSV))	567	ENTER; /* necessary e.g. for dounwind */
600	croak (NULL);	568	}
601	else	569
602	croak ("FATAL: CCTXT coroutine returned!");	570	static void
		571	transfer_tail ()
		572	{
		573	if (coro_mortal)
		574	{
		575	SvREFCNT_dec (coro_mortal);
		576	coro_mortal = 0;
603	}	577	}
604	else
605	{
606	UNOP myop;
607		578
608	PL_op = (OP *)&myop;	579	UNLOCK;
609
610	Zero(&myop, 1, UNOP);
611	myop.op_next = Nullop;
612	myop.op_flags = OPf_WANT_VOID;
613
614	PUSHMARK(SP);
615	XPUSHs (sub_init);
616	/*
617	* the next line is slightly wrong, as PL_op->op_next
618	* is actually being executed so we skip the first op.
619	* that doesn't matter, though, since it is only
620	* pp_nextstate and we never return...
621	* ah yes, and I don't care anyways ;)
622	*/
623	PUTBACK;
624	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
625	SPAGAIN;
626
627	ENTER; /* necessary e.g. for dounwind */
628	}
629	}	580	}
630		581
631	static void	582	static void
632	continue_coro (void *arg)	583	coro_run (void *arg)
633	{	584	{
634	/*	585	/*
635	* this is a _very_ stripped down perl interpreter ;)	586	* this is a _very_ stripped down perl interpreter ;)
636	*/	587	*/
637	dTHX;	588	dTHX;
638	Coro__State ctx = (Coro__State)arg;
639		589
		590	transfer_tail ();
		591
640	PL_top_env = &ctx->start_env;	592	PL_top_env = &PL_start_env;
641
642	ctx->cursp = 0;
643	PL_op = PL_op->op_next;	593	PL_restartop = PL_op->op_next;
644	CALLRUNOPS(aTHX);	594	/* somebody will hit me for both perl_run and PL_restart_top */
		595	perl_run (aTHX_ PERL_GET_CONTEXT);
645		596
646	abort ();	597	abort ();
647	}	598	}
648		599
		600	static coro_stack *
		601	stack_new ()
		602	{
		603	coro_stack *stack;
		604
		605	New (0, stack, 1, coro_stack);
		606
		607	#if HAVE_MMAP
		608
		609	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
		610	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
		611
		612	if (stack->sptr == (void *)-1)
		613	{
		614	fprintf (stderr, "FATAL: unable to mmap stack for coroutine\n");
		615	_exit (EXIT_FAILURE);
		616	}
		617
		618	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
		619
		620	#else
		621
		622	stack->ssize = STACKSIZE * (long)sizeof (long);
		623	New (0, stack->sptr, STACKSIZE, long);
		624
		625	if (!stack->sptr)
		626	{
		627	fprintf (stderr, "FATAL: unable to malloc stack for coroutine\n");
		628	_exit (EXIT_FAILURE);
		629	}
		630
		631	#endif
		632
		633	coro_create (&stack->cctx, coro_run, 0, stack->sptr, stack->ssize);
		634
		635	return stack;
		636	}
		637
649	static void	638	static void
		639	stack_free (coro_stack *stack)
		640	{
		641	if (!stack \|\| stack == main_stack)
		642	return;
		643
		644	#if HAVE_MMAP
		645	munmap (stack->sptr, stack->ssize);
		646	#else
		647	Safefree (stack->sptr);
		648	#endif
		649
		650	Safefree (stack);
		651	}
		652
		653	static coro_stack *stack_first;
		654
		655	static void
		656	stack_get (struct coro *coro)
		657	{
		658	if (stack_first)
		659	{
		660	coro->stack = stack_first;
		661	stack_first = stack_first->next;
		662	}
		663	else
		664	coro->stack = stack_new ();
		665	}
		666
		667	static void
		668	stack_put (coro_stack *stack)
		669	{
		670	stack->next = stack_first;
		671	stack_first = stack;
		672	}
		673
		674	/* never call directly, always through the coro_state_transfer global variable */
		675	static void
650	transfer (pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
651	{	677	{
652	dSTACKLEVEL;	678	dSTACKLEVEL;
653		679
		680	/* sometimes transfer is only called to set idle_sp */
		681	if (!prev->stack->idle_sp)
		682	prev->stack->idle_sp = stacklevel;
		683
		684	LOCK;
		685
654	if (prev != next)	686	if (prev != next)
655	{	687	{
656	if (next->mainstack)	688	coro_stack *prev_stack = prev->stack;
		689
		690	/* possibly "free" the stack */
		691	if (prev_stack->idle_sp == stacklevel)
657	{	692	{
658	LOCK;	693	stack_put (prev_stack);
		694	prev->stack = 0;
		695	}
		696
		697	if (!next->mainstack)
		698	{
		699	/* first get rid of the old state */
		700	SAVE (prev, -1);
		701	/* setup coroutine call */
		702	setup_coro (next);
		703	next->stack = 0;
		704	}
		705	else
		706	{
659	SAVE (prev, flags);	707	SAVE (prev, flags);
660	LOAD (next);	708	LOAD (next);
661	UNLOCK;
662
663	/* mark this state as in-use */
664	next->mainstack = 0;
665	next->tmps_ix = -2;
666
667	/* stacklevel changed? if yes, grab the stack for us! */
668	if (flags & TRANSFER_SAVE_CCTXT)
669	{
670	if (!prev->stack)
671	allocate_stack (prev, 0);
672	else if (prev->cursp != stacklevel
673	&& prev->stack->usecnt > 1)
674	{
675	prev->gencnt = ++prev->stack->gencnt;
676	prev->stack->usecnt = 1;
677	}
678
679	/* has our stack been invalidated? */
680	if (next->stack && next->stack->gencnt != next->gencnt)
681	{
682	deallocate_stack (next);
683	allocate_stack (next, 1);
684	coro_create (&(next->stack->cctx),
685	continue_coro, (void *)next,
686	next->stack->sptr, labs (next->stack->ssize));
687	}
688
689	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
690	prev->cursp = stacklevel;
691	/* don't add any code here */
692	}
693	else
694	next->cursp = stacklevel;
695	}	709	}
696	else if (next->tmps_ix == -2)
697	croak ("tried to transfer to running coroutine");
698	else
699	{
700	LOCK;
701	SAVE (prev, -1); /* first get rid of the old state */
702	UNLOCK;
703		710
704	if (flags & TRANSFER_SAVE_CCTXT)	711	if (!next->stack)
705	{	712	stack_get (next);
706	if (!prev->stack)
707	allocate_stack (prev, 0);
708		713
709	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	714	if (prev_stack != next->stack)
710	{
711	PL_top_env = &next->start_env;
712
713	setup_coro (next);
714	next->cursp = stacklevel;
715
716	prev->stack->refcnt++;
717	prev->stack->usecnt++;
718	next->stack = prev->stack;
719	next->gencnt = prev->gencnt;
720	}
721	else
722	{
723	assert (!next->stack);
724	allocate_stack (next, 1);
725	coro_create (&(next->stack->cctx),
726	setup_coro, (void *)next,
727	next->stack->sptr, labs (next->stack->ssize));
728	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&prev_stack->cctx, &next->stack->cctx);
729	prev->cursp = stacklevel;
730	/* don't add any code here */
731	}
732	}
733	else
734	{
735	setup_coro (next);
736	next->cursp = stacklevel;
737	}
738	}
739	}	716	}
740		717
741	LOCK;	718	transfer_tail ();
742	if (coro_mortal)	719	}
		720
		721	/* use this function pointer to call the above function */
		722	/* this is done to increase chances of the compiler not inlining the call */
		723	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		724
		725	static void
		726	coro_state_destroy (struct coro *coro)
		727	{
		728	if (coro->refcnt--)
		729	return;
		730
		731	if (coro->mainstack && coro->mainstack != main_mainstack)
743	{	732	{
744	SvREFCNT_dec (coro_mortal);	733	struct coro temp;
		734
		735	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		736	LOAD (aTHX_ coro);
		737
		738	destroy_stacks (aTHX);
		739
		740	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		741
745	coro_mortal = 0;	742	coro->mainstack = 0;
746	}	743	}
747	UNLOCK;
748	}
749		744
750	#define SV_CORO(sv,func) \	745	stack_free (coro->stack);
751	do { \	746	SvREFCNT_dec (coro->args);
752	if (SvROK (sv)) \	747	Safefree (coro);
753	sv = SvRV (sv); \	748	}
754	\
755	if (SvTYPE (sv) == SVt_PVHV) \
756	{ \
757	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
758	\
759	if (!he) \
760	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
761	\
762	(sv) = SvRV (HeVAL(he)); \
763	} \
764	\
765	/* must also be changed inside Coro::Cont::yield */ \
766	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
767	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
768	\
769	} while(0)
770		749
771	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
772
773	static void	750	static int
		751	coro_state_clear (SV sv, MAGIC mg)
		752	{
		753	struct coro coro = (struct coro )mg->mg_ptr;
		754	mg->mg_ptr = 0;
		755
		756	coro_state_destroy (coro);
		757
		758	return 0;
		759	}
		760
		761	static int
		762	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		763	{
		764	struct coro coro = (struct coro )mg->mg_ptr;
		765
		766	++coro->refcnt;
		767
		768	return 0;
		769	}
		770
		771	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		772
		773	static struct coro *
		774	SvSTATE (SV *coro)
		775	{
		776	HV *stash;
		777	MAGIC *mg;
		778
		779	if (SvROK (coro))
		780	coro = SvRV (coro);
		781
		782	stash = SvSTASH (coro);
		783	if (stash != coro_stash && stash != coro_state_stash)
		784	{
		785	/* very slow, but rare, check */
		786	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		787	croak ("Coro::State object required");
		788	}
		789
		790	mg = SvMAGIC (coro);
		791	assert (mg->mg_type == PERL_MAGIC_ext);
		792	return (struct coro *)mg->mg_ptr;
		793	}
		794
		795	static void
774	api_transfer(pTHX_ SV prev, SV next, int flags)	796	api_transfer (pTHX_ SV prev, SV next, int flags)
775	{	797	{
776	SV_CORO (prev, "Coro::transfer");
777	SV_CORO (next, "Coro::transfer");
778
779	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	798	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
780	}	799	}
781		800
782	/ Coro ******************************************************************/	801	/ Coro ******************************************************************/
783		802
784	#define PRIO_MAX 3	803	#define PRIO_MAX 3
…		…
788	#define PRIO_IDLE -3	807	#define PRIO_IDLE -3
789	#define PRIO_MIN -4	808	#define PRIO_MIN -4
790		809
791	/* for Coro.pm */	810	/* for Coro.pm */
792	static GV coro_current, coro_idle;	811	static GV coro_current, coro_idle;
793	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	812	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
794	static int coro_nready;	813	static int coro_nready;
795		814
796	static void	815	static void
797	coro_enq (pTHX_ SV *sv)	816	coro_enq (pTHX_ SV *sv)
798	{	817	{
799	SV **xprio;
800	int prio;	818	int prio;
801		819
802	if (SvTYPE (sv) != SVt_PVHV)	820	if (SvTYPE (sv) != SVt_PVHV)
803	croak ("Coro::ready tried to enqueue something that is not a coroutine");	821	croak ("Coro::ready tried to enqueue something that is not a coroutine");
804		822
805	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	823	prio = SvSTATE (sv)->prio;
806	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
807
808	prio = prio > PRIO_MAX ? PRIO_MAX
809	: prio < PRIO_MIN ? PRIO_MIN
810	: prio;
811		824
812	av_push (coro_ready [prio - PRIO_MIN], sv);	825	av_push (coro_ready [prio - PRIO_MIN], sv);
813	coro_nready++;	826	coro_nready++;
814	}	827	}
815		828
…		…
821	min_prio -= PRIO_MIN;	834	min_prio -= PRIO_MIN;
822	if (min_prio < 0)	835	if (min_prio < 0)
823	min_prio = 0;	836	min_prio = 0;
824		837
825	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	838	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
826	if (av_len (coro_ready[prio]) >= 0)	839	if (AvFILLp (coro_ready [prio]) >= 0)
827	{	840	{
828	coro_nready--;	841	coro_nready--;
829	return av_shift (coro_ready[prio]);	842	return av_shift (coro_ready [prio]);
830	}	843	}
831		844
832	return 0;	845	return 0;
833	}	846	}
834		847
…		…
849	api_schedule (void)	862	api_schedule (void)
850	{	863	{
851	dTHX;	864	dTHX;
852		865
853	SV prev, next;	866	SV prev, next;
		867	SV *current = GvSV (coro_current);
854		868
		869	for (;;)
		870	{
855	LOCK;	871	LOCK;
856		872
857	prev = SvRV (GvSV (coro_current));
858	next = coro_deq (aTHX_ PRIO_MIN);	873	next = coro_deq (aTHX_ PRIO_MIN);
859		874
860	if (!next)	875	if (next)
861	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	876	break;
		877
		878	UNLOCK;
		879
		880	{
		881	dSP;
		882
		883	ENTER;
		884	SAVETMPS;
		885
		886	PUSHMARK (SP);
		887	PUTBACK;
		888	call_sv (GvSV (coro_idle), G_DISCARD);
		889
		890	FREETMPS;
		891	LEAVE;
		892	}
		893	}
		894
		895	prev = SvRV (current);
		896	SvRV (current) = next;
862		897
863	/* free this only after the transfer */	898	/* free this only after the transfer */
864	coro_mortal = prev;	899	coro_mortal = prev;
865	SV_CORO (prev, "Coro::schedule");
866
867	SvRV (GvSV (coro_current)) = next;
868
869	SV_CORO (next, "Coro::schedule");
870		900
871	UNLOCK;	901	UNLOCK;
872		902
873	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	903	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
874	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
875	}	904	}
		905
		906	static int coro_cede_self;
876		907
877	static void	908	static void
878	api_cede (void)	909	api_cede (void)
879	{	910	{
880	dTHX;	911	dTHX;
		912	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
881		913
882	LOCK;	914	LOCK;
883	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	915
		916	if (coro_cede_self)
		917	{
		918	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
		919	av_unshift (runqueue, 1);
		920	av_store (runqueue, 0, current);
		921	coro_nready++;
		922	coro_cede_self = 0;
		923	}
		924	else
		925	coro_enq (aTHX_ current);
		926
884	UNLOCK;	927	UNLOCK;
885		928
886	api_schedule ();	929	api_schedule ();
887	}	930	}
888		931
889	MODULE = Coro::State PACKAGE = Coro::State	932	MODULE = Coro::State PACKAGE = Coro::State
890		933
891	PROTOTYPES: ENABLE	934	PROTOTYPES: DISABLE
892		935
893	BOOT:	936	BOOT:
894	{ /* {} necessary for stoopid perl-5.6.x */	937	{
895	#ifdef USE_ITHREADS	938	#ifdef USE_ITHREADS
896	MUTEX_INIT (&coro_mutex);	939	MUTEX_INIT (&coro_mutex);
897	#endif	940	#endif
		941	BOOT_PAGESIZE;
898		942
899	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
900	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
901	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	943	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
902		944
903	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	945	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
904	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	946	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
905	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	947	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
906	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
907		948
908	main_mainstack = PL_mainstack;	949	main_mainstack = PL_mainstack;
909		950
910	coroapi.ver = CORO_API_VERSION;	951	coroapi.ver = CORO_API_VERSION;
911	coroapi.transfer = api_transfer;	952	coroapi.transfer = api_transfer;
912	}
913		953
914	Coro::State	954	Newz (0, main_stack, 1, coro_stack);
915	_newprocess(args)	955	main_stack->idle_sp = (void *)-1;
916	SV * args	956
917	PROTOTYPE: $	957	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		958	}
		959
		960	SV *
		961	new (char *klass, ...)
918	CODE:	962	CODE:
919	Coro__State coro;	963	{
		964	struct coro *coro;
		965	HV *hv;
		966	int i;
920		967
921	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
922	croak ("Coro::State::_newprocess expects an arrayref");
923
924	Newz (0, coro, 1, struct coro);	968	Newz (0, coro, 1, struct coro);
		969	coro->args = newAV ();
925		970
926	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	971	hv = newHV ();
		972	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		973	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		974
		975	av_push (coro->args, newSVsv (RETVAL));
		976	for (i = 1; i < items; i++)
		977	av_push (coro->args, newSVsv (ST (i)));
		978
		979	coro->stack = main_stack;
927	/coro->mainstack = 0; //actual work is done inside transfer /	980	/coro->mainstack = 0; //actual work is done inside transfer /
928	/coro->stack = 0;/	981	/coro->stack = 0;/
929		982	}
930	/* same as JMPENV_BOOTSTRAP */
931	/* we might be able to recycle start_env, but safe is safe */
932	/Zero(&coro->start_env, 1, JMPENV);/
933	coro->start_env.je_ret = -1;
934	coro->start_env.je_mustcatch = TRUE;
935
936	RETVAL = coro;
937	OUTPUT:	983	OUTPUT:
938	RETVAL	984	RETVAL
939		985
940	void	986	void
941	transfer(prev, next, flags)	987	transfer (prev, next, flags)
942	SV *prev	988	SV *prev
943	SV *next	989	SV *next
944	int flags	990	int flags
945	PROTOTYPE: @
946	CODE:	991	CODE:
947	PUTBACK;	992	PUTBACK;
948	SV_CORO (next, "Coro::transfer");
949	SV_CORO (prev, "Coro::transfer");
950	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	993	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
951	SPAGAIN;	994	SPAGAIN;
952		995
		996	int
		997	prio (Coro::State coro, int newprio = 0)
		998	ALIAS:
		999	nice = 1
		1000	CODE:
		1001	{
		1002	RETVAL = coro->prio;
		1003
		1004	if (items > 1)
		1005	{
		1006	if (ix)
		1007	newprio += coro->prio;
		1008
		1009	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1010	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1011
		1012	coro->prio = newprio;
		1013	}
		1014	}
		1015
953	void	1016	void
954	DESTROY(coro)	1017	_clear_idle_sp (Coro::State self)
955	Coro::State coro	1018	CODE:
956	CODE:	1019	self->stack->idle_sp = 0;
957
958	if (coro->mainstack && coro->mainstack != main_mainstack)
959	{
960	struct coro temp;
961
962	PUTBACK;
963	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
964	LOAD (aTHX_ coro);
965	SPAGAIN;
966
967	destroy_stacks (aTHX);
968
969	LOAD ((&temp)); /* this will get rid of defsv etc.. */
970	SPAGAIN;
971
972	coro->mainstack = 0;
973	}
974
975	deallocate_stack (coro);
976	SvREFCNT_dec (coro->args);
977	Safefree (coro);
978		1020
979	void	1021	void
		1022	_clone_state_from (SV dst, SV src)
		1023	CODE:
		1024	{
		1025	struct coro *coro_src = SvSTATE (src);
		1026
		1027	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
		1028
		1029	++coro_src->refcnt;
		1030	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
		1031	}
		1032
		1033	void
980	_exit(code)	1034	_exit (code)
981	int code	1035	int code
982	PROTOTYPE: $	1036	PROTOTYPE: $
983	CODE:	1037	CODE:
984	_exit (code);	1038	_exit (code);
985		1039
986	MODULE = Coro::State PACKAGE = Coro::Cont	1040	MODULE = Coro::State PACKAGE = Coro::Cont
987		1041
988	# this is slightly dirty (should expose a c-level api)
989
990	void	1042	void
991	yield(...)	1043	yield (...)
992	PROTOTYPE: @	1044	PROTOTYPE: @
993	CODE:	1045	CODE:
		1046	{
994	SV *yieldstack;	1047	SV *yieldstack;
995	SV *sv;	1048	SV *sv;
996	AV *defav = GvAV (PL_defgv);	1049	AV *defav = GvAV (PL_defgv);
997	struct coro prev, next;	1050	struct coro prev, next;
998		1051
…		…
1007	av_fill (defav, items - 1);	1060	av_fill (defav, items - 1);
1008	while (items--)	1061	while (items--)
1009	av_store (defav, items, SvREFCNT_inc (ST(items)));	1062	av_store (defav, items, SvREFCNT_inc (ST(items)));
1010		1063
1011	sv = av_pop ((AV *)SvRV (yieldstack));	1064	sv = av_pop ((AV *)SvRV (yieldstack));
1012	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));	1065	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1013	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));	1066	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1014	SvREFCNT_dec (sv);	1067	SvREFCNT_dec (sv);
1015		1068
1016	transfer (aTHX_ prev, next, 0);	1069	coro_state_transfer (aTHX_ prev, next, 0);
		1070	}
1017		1071
1018	MODULE = Coro::State PACKAGE = Coro	1072	MODULE = Coro::State PACKAGE = Coro
1019		1073
1020	# this is slightly dirty (should expose a c-level api)
1021
1022	BOOT:	1074	BOOT:
1023	{	1075	{
1024	int i;	1076	int i;
		1077
1025	HV *stash = gv_stashpv ("Coro", TRUE);	1078	coro_stash = gv_stashpv ("Coro", TRUE);
1026		1079
1027	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1080	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1028	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1081	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1029	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1082	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1030	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1083	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1031	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1084	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1032	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1085	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1033		1086
1034	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1087	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1035	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1088	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1036		1089
1037	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1090	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1045	coroapi.ready = api_ready;	1098	coroapi.ready = api_ready;
1046	coroapi.nready = &coro_nready;	1099	coroapi.nready = &coro_nready;
1047	coroapi.current = coro_current;	1100	coroapi.current = coro_current;
1048		1101
1049	GCoroAPI = &coroapi;	1102	GCoroAPI = &coroapi;
1050	sv_setiv(sv, (IV)&coroapi);	1103	sv_setiv (sv, (IV)&coroapi);
1051	SvREADONLY_on(sv);	1104	SvREADONLY_on (sv);
1052	}	1105	}
1053	}	1106	}
1054		1107
1055	#if !PERL_MICRO
1056
1057	void	1108	void
1058	ready(self)	1109	ready (SV *self)
1059	SV * self
1060	PROTOTYPE: $	1110	PROTOTYPE: $
1061	CODE:	1111	CODE:
1062	api_ready (self);	1112	api_ready (self);
1063		1113
1064	#endif
1065
1066	int	1114	int
1067	nready(...)	1115	nready (...)
1068	PROTOTYPE:	1116	PROTOTYPE:
1069	CODE:	1117	CODE:
1070	RETVAL = coro_nready;	1118	RETVAL = coro_nready;
1071	OUTPUT:	1119	OUTPUT:
1072	RETVAL	1120	RETVAL
1073		1121
1074	void	1122	void
1075	schedule(...)	1123	schedule (...)
1076	PROTOTYPE:	1124	PROTOTYPE:
1077	CODE:	1125	CODE:
1078	api_schedule ();	1126	api_schedule ();
1079		1127
1080	void	1128	void
		1129	_set_cede_self ()
		1130	CODE:
		1131	coro_cede_self = 1;
		1132
		1133	void
1081	cede(...)	1134	cede (...)
1082	PROTOTYPE:	1135	PROTOTYPE:
1083	CODE:	1136	CODE:
1084	api_cede ();	1137	api_cede ();
1085		1138
1086	# and these are hacks	1139	MODULE = Coro::State PACKAGE = Coro::AIO
		1140
1087	SV *	1141	SV *
1088	_aio_get_state ()	1142	_get_state ()
1089	CODE:	1143	CODE:
1090	{	1144	{
1091	struct {	1145	struct {
1092	int errorno;	1146	int errorno;
1093	int laststype;	1147	int laststype;
…		…
1104	}	1158	}
1105	OUTPUT:	1159	OUTPUT:
1106	RETVAL	1160	RETVAL
1107		1161
1108	void	1162	void
1109	_aio_set_state (char *data_)	1163	_set_state (char *data_)
1110	PROTOTYPE: $	1164	PROTOTYPE: $
1111	CODE:	1165	CODE:
1112	{	1166	{
1113	struct {	1167	struct {
1114	int errorno;	1168	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.77 by root, Tue Oct 31 23:55:33 2006 UTC vs. Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.77 by root, Tue Oct 31 23:55:33 2006 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC