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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC vs.
Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC

…		…
57	# else	57	# else
58	# define BOOT_PAGESIZE	58	# define BOOT_PAGESIZE
59	# endif	59	# endif
60	#endif	60	#endif
61		61
62	#define SUB_INIT "Coro::State::initialize"	62	#define SUB_INIT "Coro::State::initialize"
63	#define UCORO_STATE "_coro_state"
64		63
65	/* 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
66	* 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
67	* and should be unique. */	66	* and should be unique. */
68	#define dSTACKLEVEL void *stacklevel = &stacklevel	67	#define dSTACKLEVEL void *stacklevel = &stacklevel
…		…
82	# define UNLOCK (void)0	81	# define UNLOCK (void)0
83	#endif	82	#endif
84		83
85	static struct CoroAPI coroapi;	84	static struct CoroAPI coroapi;
86	static AV main_mainstack; / used to differentiate between $main and others */	85	static AV main_mainstack; / used to differentiate between $main and others */
87	static HV *coro_state_stash;	86	static HV coro_state_stash, coro_stash;
88	static SV *ucoro_state_sv;
89	static U32 ucoro_state_hash;
90	static SV coro_mortal; / will be freed after next transfer */	87	static SV coro_mortal; / will be freed after next transfer */
91		88
92	/* 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... */
93	typedef struct {	90	typedef struct coro_stack {
94	int refcnt; /* pointer reference counter */	91	struct coro_stack *next;
95	int usecnt; /* shared by how many coroutines */
96	int gencnt; /* generation counter */
97		92
98	coro_context cctx;	93	void *idle_sp;
99
100	void *sptr;	94	void *sptr;
101	long ssize; /* positive == mmap, otherwise malloc */	95	long ssize; /* positive == mmap, otherwise malloc */
		96
		97	/* cpu state */
		98	coro_context cctx;
102	} coro_stack;	99	} coro_stack;
103		100
		101	static coro_stack *main_stack;
		102
104	struct coro {	103	struct coro {
105	/* the top-level JMPENV for each coroutine, needed to catch dies. */
106	JMPENV start_env;
107
108	/* the optional C context */
109	coro_stack *stack;
110	void *cursp;
111	int gencnt;
112
113	/* optionally saved, might be zero */	104	/* optionally saved, might be zero */
114	AV *defav;	105	AV *defav;
115	SV *defsv;	106	SV *defsv;
116	SV *errsv;	107	SV *errsv;
117		108
118	/* saved global state not related to stacks */	109	/* saved global state not related to stacks */
119	U8 dowarn;	110	U8 dowarn;
120	I32 in_eval;	111	I32 in_eval;
		112
		113	/* the c stack, if any */
		114	coro_stack *stack;
121		115
122	/* the stacks and related info (callchain etc..) */	116	/* the stacks and related info (callchain etc..) */
123	PERL_SI *curstackinfo;	117	PERL_SI *curstackinfo;
124	AV *curstack;	118	AV *curstack;
125	AV *mainstack;	119	AV *mainstack;
…		…
148	I32 retstack_max;	142	I32 retstack_max;
149	PMOP *curpm;	143	PMOP *curpm;
150	COP *curcop;	144	COP *curcop;
151	JMPENV *top_env;	145	JMPENV *top_env;
152		146
		147	/* coro process data */
		148	int prio;
		149
153	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
154	AV *args;	151	AV *args;
		152	int refcnt;
155	};	153	};
156		154
157	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
158	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
159		157
…		…
534	Safefree (PL_retstack);	532	Safefree (PL_retstack);
535	#endif	533	#endif
536	}	534	}
537		535
538	static void	536	static void
539	allocate_stack (Coro__State ctx, int alloc)	537	setup_coro (struct coro *coro)
540	{
541	coro_stack *stack;
542
543	New (0, stack, 1, coro_stack);
544
545	stack->refcnt = 1;
546	stack->usecnt = 1;
547	stack->gencnt = ctx->gencnt = 0;
548
549	if (alloc)
550	{
551	#if HAVE_MMAP
552	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
553	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
554	if (stack->sptr != (void *)-1)
555	{
556	# if STACKGUARD
557	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
558	# endif
559	}
560	else
561	#endif
562	{
563	stack->ssize = - (STACKSIZE * (long)sizeof (long));
564	New (0, stack->sptr, STACKSIZE, long);
565	}
566	}
567	else
568	stack->sptr = 0;
569
570	ctx->stack = stack;
571	}
572
573	static void
574	deallocate_stack (Coro__State ctx)
575	{
576	coro_stack *stack = ctx->stack;
577
578	ctx->stack = 0;
579
580	if (stack)
581	{
582	if (!--stack->refcnt)
583	{
584	#ifdef HAVE_MMAP
585	if (stack->ssize > 0 && stack->sptr)
586	munmap (stack->sptr, stack->ssize);
587	else
588	#endif
589	Safefree (stack->sptr);
590
591	Safefree (stack);
592	}
593	else if (ctx->gencnt == stack->gencnt)
594	--stack->usecnt;
595	}
596	}
597
598	static void
599	setup_coro (void *arg)
600	{	538	{
601	/*	539	/*
602	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
603	*/	541	*/
604	dTHX;	542	dTHX;
605	dSP;	543	dSP;
606	Coro__State ctx = (Coro__State)arg;	544	UNOP myop;
607	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
608		546
609	coro_init_stacks (aTHX);	547	coro_init_stacks (aTHX);
610	/PL_curcop = 0;/	548	/PL_curcop = 0;/
611	/PL_in_eval = PL_in_eval;/ /* inherit */	549	/PL_in_eval = PL_in_eval;/ /* inherit */
612	SvREFCNT_dec (GvAV (PL_defgv));	550	SvREFCNT_dec (GvAV (PL_defgv));
613	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	551	GvAV (PL_defgv) = coro->args; coro->args = 0;
614		552
615	SPAGAIN;	553	SPAGAIN;
616		554
617	if (ctx->stack)	555	Zero (&myop, 1, UNOP);
618	{	556	myop.op_next = Nullop;
619	ctx->cursp = 0;	557	myop.op_flags = OPf_WANT_VOID;
620		558
		559	PL_op = (OP *)&myop;
		560
621	PUSHMARK(SP);	561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
622	PUTBACK;	563	PUTBACK;
623	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		565	SPAGAIN;
624		566
625	if (SvTRUE (ERRSV))	567	ENTER; /* necessary e.g. for dounwind */
626	croak (NULL);	568	}
627	else	569
628	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;
629	}	577	}
630	else
631	{
632	UNOP myop;
633		578
634	Zero(&myop, 1, UNOP);	579	UNLOCK;
635	myop.op_next = Nullop;
636	myop.op_flags = OPf_WANT_VOID;
637
638	PL_op = (OP *)&myop;
639
640	PUSHMARK(SP);
641	XPUSHs (sub_init);
642	/*
643	* the next line is slightly wrong, as PL_op->op_next
644	* is actually being executed so we skip the first op.
645	* that doesn't matter, though, since it is only
646	* pp_nextstate and we never return...
647	* ah yes, and I don't care anyways ;)
648	*/
649	PUTBACK;
650	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
651	SPAGAIN;
652
653	ENTER; /* necessary e.g. for dounwind */
654	}
655	}	580	}
656		581
657	static void	582	static void
658	continue_coro (void *arg)	583	coro_run (void *arg)
659	{	584	{
660	/*	585	/*
661	* this is a _very_ stripped down perl interpreter ;)	586	* this is a _very_ stripped down perl interpreter ;)
662	*/	587	*/
663	dTHX;	588	dTHX;
664	Coro__State ctx = (Coro__State)arg;
665		589
		590	transfer_tail ();
		591
666	PL_top_env = &ctx->start_env;	592	PL_top_env = &PL_start_env;
667
668	ctx->cursp = 0;
669	PL_op = PL_op->op_next;	593	PL_restartop = PL_op->op_next;
670	CALLRUNOPS(aTHX);	594	/* somebody will hit me for both perl_run and PL_restart_top */
		595	perl_run (aTHX_ PERL_GET_CONTEXT);
671		596
672	abort ();	597	abort ();
673	}	598	}
674		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
675	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
676	transfer (pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
677	{	677	{
678	dSTACKLEVEL;	678	dSTACKLEVEL;
679		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
680	if (prev != next)	686	if (prev != next)
681	{	687	{
		688	coro_stack *prev_stack = prev->stack;
		689
		690	/* possibly "free" the stack */
		691	if (prev_stack->idle_sp == stacklevel)
		692	{
		693	stack_put (prev_stack);
		694	prev->stack = 0;
		695	}
		696
682	if (next->mainstack)	697	if (next->mainstack)
683	{	698	{
684	LOCK;	699	/* coroutine already started */
685	SAVE (prev, flags);	700	SAVE (prev, flags);
686	LOAD (next);	701	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	}	702	}
722	else if (next->tmps_ix == -2)
723	croak ("tried to transfer to running coroutine");
724	else	703	else
725	{	704	{
726	LOCK;	705	/* need to start coroutine */
727	SAVE (prev, -1); /* first get rid of the old state */	706	/* first get rid of the old state */
728	UNLOCK;	707	SAVE (prev, -1);
729		708	/* setup coroutine call */
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
736	{
737	PL_top_env = &next->start_env;
738
739	setup_coro (next);
740	next->cursp = stacklevel;
741
742	prev->stack->refcnt++;
743	prev->stack->usecnt++;
744	next->stack = prev->stack;
745	next->gencnt = prev->gencnt;
746	}
747	else
748	{
749	assert (!next->stack);
750	allocate_stack (next, 1);
751	coro_create (&(next->stack->cctx),
752	setup_coro, (void *)next,
753	next->stack->sptr, labs (next->stack->ssize));
754	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
755	prev->cursp = stacklevel;
756	/* don't add any code here */
757	}
758	}
759	else
760	{
761	setup_coro (next);	709	setup_coro (next);
762	next->cursp = stacklevel;	710	/* need to change stack from main_stack to real one */
763	}	711	next->stack = 0;
764	}	712	}
		713
		714	if (!next->stack)
		715	stack_get (next);
		716
		717	if (prev_stack != next->stack)
		718	coro_transfer (&prev_stack->cctx, &next->stack->cctx);
765	}	719	}
766		720
767	LOCK;	721	transfer_tail ();
768	if (coro_mortal)	722	}
		723
		724	/* use this function pointer to call the above function */
		725	/* this is done to increase chances of the compiler not inlining the call */
		726	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
		727
		728	static void
		729	coro_state_destroy (struct coro *coro)
		730	{
		731	if (coro->refcnt--)
		732	return;
		733
		734	if (coro->mainstack && coro->mainstack != main_mainstack)
769	{	735	{
770	SvREFCNT_dec (coro_mortal);	736	struct coro temp;
		737
		738	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
		739	LOAD (aTHX_ coro);
		740
		741	destroy_stacks (aTHX);
		742
		743	LOAD ((&temp)); /* this will get rid of defsv etc.. */
		744
771	coro_mortal = 0;	745	coro->mainstack = 0;
772	}	746	}
773	UNLOCK;
774	}
775		747
776	#define SV_CORO(sv,func) \	748	stack_free (coro->stack);
777	do { \	749	SvREFCNT_dec (coro->args);
778	if (SvROK (sv)) \	750	Safefree (coro);
779	sv = SvRV (sv); \	751	}
780	\
781	if (SvTYPE (sv) == SVt_PVHV) \
782	{ \
783	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
784	\
785	if (!he) \
786	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
787	\
788	(sv) = SvRV (HeVAL(he)); \
789	} \
790	\
791	/* must also be changed inside Coro::Cont::yield */ \
792	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
793	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
794	\
795	} while(0)
796		752
797	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
798
799	static void	753	static int
		754	coro_state_clear (SV sv, MAGIC mg)
		755	{
		756	struct coro coro = (struct coro )mg->mg_ptr;
		757	mg->mg_ptr = 0;
		758
		759	coro_state_destroy (coro);
		760
		761	return 0;
		762	}
		763
		764	static int
		765	coro_state_dup (MAGIC mg, CLONE_PARAMS params)
		766	{
		767	struct coro coro = (struct coro )mg->mg_ptr;
		768
		769	++coro->refcnt;
		770
		771	return 0;
		772	}
		773
		774	static MGVTBL coro_state_vtbl = { 0, 0, 0, 0, coro_state_clear, 0, coro_state_dup, 0 };
		775
		776	static struct coro *
		777	SvSTATE (SV *coro)
		778	{
		779	HV *stash;
		780	MAGIC *mg;
		781
		782	if (SvROK (coro))
		783	coro = SvRV (coro);
		784
		785	stash = SvSTASH (coro);
		786	if (stash != coro_stash && stash != coro_state_stash)
		787	{
		788	/* very slow, but rare, check */
		789	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		790	croak ("Coro::State object required");
		791	}
		792
		793	mg = SvMAGIC (coro);
		794	assert (mg->mg_type == PERL_MAGIC_ext);
		795	return (struct coro *)mg->mg_ptr;
		796	}
		797
		798	static void
800	api_transfer(pTHX_ SV prev, SV next, int flags)	799	api_transfer (pTHX_ SV prev, SV next, int flags)
801	{	800	{
802	SV_CORO (prev, "Coro::transfer");
803	SV_CORO (next, "Coro::transfer");
804
805	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	801	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
806	}	802	}
807		803
808	/ Coro ******************************************************************/	804	/ Coro ******************************************************************/
809		805
810	#define PRIO_MAX 3	806	#define PRIO_MAX 3
…		…
814	#define PRIO_IDLE -3	810	#define PRIO_IDLE -3
815	#define PRIO_MIN -4	811	#define PRIO_MIN -4
816		812
817	/* for Coro.pm */	813	/* for Coro.pm */
818	static GV coro_current, coro_idle;	814	static GV coro_current, coro_idle;
819	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	815	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
820	static int coro_nready;	816	static int coro_nready;
821		817
822	static void	818	static void
823	coro_enq (pTHX_ SV *sv)	819	coro_enq (pTHX_ SV *sv)
824	{	820	{
825	SV **xprio;
826	int prio;	821	int prio;
827		822
828	if (SvTYPE (sv) != SVt_PVHV)	823	if (SvTYPE (sv) != SVt_PVHV)
829	croak ("Coro::ready tried to enqueue something that is not a coroutine");	824	croak ("Coro::ready tried to enqueue something that is not a coroutine");
830		825
831	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	826	prio = SvSTATE (sv)->prio;
832	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
833
834	prio = prio > PRIO_MAX ? PRIO_MAX
835	: prio < PRIO_MIN ? PRIO_MIN
836	: prio;
837		827
838	av_push (coro_ready [prio - PRIO_MIN], sv);	828	av_push (coro_ready [prio - PRIO_MIN], sv);
839	coro_nready++;	829	coro_nready++;
840	}	830	}
841		831
…		…
847	min_prio -= PRIO_MIN;	837	min_prio -= PRIO_MIN;
848	if (min_prio < 0)	838	if (min_prio < 0)
849	min_prio = 0;	839	min_prio = 0;
850		840
851	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	841	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
852	if (av_len (coro_ready[prio]) >= 0)	842	if (AvFILLp (coro_ready [prio]) >= 0)
853	{	843	{
854	coro_nready--;	844	coro_nready--;
855	return av_shift (coro_ready[prio]);	845	return av_shift (coro_ready [prio]);
856	}	846	}
857		847
858	return 0;	848	return 0;
859	}	849	}
860		850
…		…
875	api_schedule (void)	865	api_schedule (void)
876	{	866	{
877	dTHX;	867	dTHX;
878		868
879	SV prev, next;	869	SV prev, next;
		870	SV *current = GvSV (coro_current);
880		871
		872	for (;;)
		873	{
881	LOCK;	874	LOCK;
882		875
883	prev = SvRV (GvSV (coro_current));
884	next = coro_deq (aTHX_ PRIO_MIN);	876	next = coro_deq (aTHX_ PRIO_MIN);
885		877
886	if (!next)	878	if (next)
887	next = SvREFCNT_inc (SvRV (GvSV (coro_idle)));	879	break;
		880
		881	UNLOCK;
		882
		883	{
		884	dSP;
		885
		886	ENTER;
		887	SAVETMPS;
		888
		889	PUSHMARK (SP);
		890	PUTBACK;
		891	call_sv (GvSV (coro_idle), G_DISCARD);
		892
		893	FREETMPS;
		894	LEAVE;
		895	}
		896	}
		897
		898	prev = SvRV (current);
		899	SvRV (current) = next;
888		900
889	/* free this only after the transfer */	901	/* free this only after the transfer */
890	coro_mortal = prev;	902	coro_mortal = prev;
891	SV_CORO (prev, "Coro::schedule");
892
893	SvRV (GvSV (coro_current)) = next;
894
895	SV_CORO (next, "Coro::schedule");
896		903
897	UNLOCK;	904	UNLOCK;
898		905
899	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	906	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
900	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
901	}	907	}
		908
		909	static int coro_cede_self;
902		910
903	static void	911	static void
904	api_cede (void)	912	api_cede (void)
905	{	913	{
906	dTHX;	914	dTHX;
		915	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
907		916
908	LOCK;	917	LOCK;
909	coro_enq (aTHX_ SvREFCNT_inc (SvRV (GvSV (coro_current))));	918
		919	if (coro_cede_self)
		920	{
		921	AV *runqueue = coro_ready [PRIO_MAX - PRIO_MIN];
		922	av_unshift (runqueue, 1);
		923	av_store (runqueue, 0, current);
		924	coro_nready++;
		925	coro_cede_self = 0;
		926	}
		927	else
		928	coro_enq (aTHX_ current);
		929
910	UNLOCK;	930	UNLOCK;
911		931
912	api_schedule ();	932	api_schedule ();
913	}	933	}
914		934
915	MODULE = Coro::State PACKAGE = Coro::State	935	MODULE = Coro::State PACKAGE = Coro::State
916		936
917	PROTOTYPES: ENABLE	937	PROTOTYPES: DISABLE
918		938
919	BOOT:	939	BOOT:
920	{ /* {} necessary for stoopid perl-5.6.x */	940	{
921	#ifdef USE_ITHREADS	941	#ifdef USE_ITHREADS
922	MUTEX_INIT (&coro_mutex);	942	MUTEX_INIT (&coro_mutex);
923	#endif	943	#endif
924	BOOT_PAGESIZE;	944	BOOT_PAGESIZE;
925		945
926	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
927	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
928	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	946	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
929		947
930	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	948	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
931	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	949	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
932	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	950	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
933	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
934		951
935	main_mainstack = PL_mainstack;	952	main_mainstack = PL_mainstack;
936		953
937	coroapi.ver = CORO_API_VERSION;	954	coroapi.ver = CORO_API_VERSION;
938	coroapi.transfer = api_transfer;	955	coroapi.transfer = api_transfer;
939	}
940		956
941	Coro::State	957	Newz (0, main_stack, 1, coro_stack);
942	_newprocess(args)	958	main_stack->idle_sp = (void *)-1;
943	SV * args	959
944	PROTOTYPE: $	960	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		961	}
		962
		963	SV *
		964	new (char *klass, ...)
945	CODE:	965	CODE:
946	Coro__State coro;	966	{
		967	struct coro *coro;
		968	HV *hv;
		969	int i;
947		970
948	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
949	croak ("Coro::State::_newprocess expects an arrayref");
950
951	Newz (0, coro, 1, struct coro);	971	Newz (0, coro, 1, struct coro);
		972	coro->args = newAV ();
952		973
953	coro->args = (AV *)SvREFCNT_inc (SvRV (args));	974	hv = newHV ();
		975	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
		976	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		977
		978	av_push (coro->args, newSVsv (RETVAL));
		979	for (i = 1; i < items; i++)
		980	av_push (coro->args, newSVsv (ST (i)));
		981
		982	coro->stack = main_stack;
954	/coro->mainstack = 0; //actual work is done inside transfer /	983	/coro->mainstack = 0; //actual work is done inside transfer /
955	/coro->stack = 0;/	984	/coro->stack = 0;/
956		985	}
957	/* same as JMPENV_BOOTSTRAP */
958	/* we might be able to recycle start_env, but safe is safe */
959	/Zero (&coro->start_env, 1, JMPENV);/
960	coro->start_env.je_ret = -1;
961	coro->start_env.je_mustcatch = TRUE;
962
963	RETVAL = coro;
964	OUTPUT:	986	OUTPUT:
965	RETVAL	987	RETVAL
966		988
967	void	989	void
968	transfer(prev, next, flags)	990	transfer (prev, next, flags)
969	SV *prev	991	SV *prev
970	SV *next	992	SV *next
971	int flags	993	int flags
972	PROTOTYPE: @
973	CODE:	994	CODE:
974	PUTBACK;	995	PUTBACK;
975	SV_CORO (next, "Coro::transfer");
976	SV_CORO (prev, "Coro::transfer");
977	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	996	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
978	SPAGAIN;	997	SPAGAIN;
979		998
		999	int
		1000	prio (Coro::State coro, int newprio = 0)
		1001	ALIAS:
		1002	nice = 1
		1003	CODE:
		1004	{
		1005	RETVAL = coro->prio;
		1006
		1007	if (items > 1)
		1008	{
		1009	if (ix)
		1010	newprio += coro->prio;
		1011
		1012	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
		1013	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
		1014
		1015	coro->prio = newprio;
		1016	}
		1017	}
		1018
980	void	1019	void
981	DESTROY(coro)	1020	_clear_idle_sp (Coro::State self)
982	Coro::State coro	1021	CODE:
983	CODE:	1022	self->stack->idle_sp = 0;
984
985	if (coro->mainstack && coro->mainstack != main_mainstack)
986	{
987	struct coro temp;
988
989	PUTBACK;
990	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
991	LOAD (aTHX_ coro);
992	SPAGAIN;
993
994	destroy_stacks (aTHX);
995
996	LOAD ((&temp)); /* this will get rid of defsv etc.. */
997	SPAGAIN;
998
999	coro->mainstack = 0;
1000	}
1001
1002	deallocate_stack (coro);
1003	SvREFCNT_dec (coro->args);
1004	Safefree (coro);
1005		1023
1006	void	1024	void
		1025	_clone_state_from (SV dst, SV src)
		1026	CODE:
		1027	{
		1028	struct coro *coro_src = SvSTATE (src);
		1029
		1030	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
		1031
		1032	++coro_src->refcnt;
		1033	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
		1034	}
		1035
		1036	void
1007	_exit(code)	1037	_exit (code)
1008	int code	1038	int code
1009	PROTOTYPE: $	1039	PROTOTYPE: $
1010	CODE:	1040	CODE:
1011	_exit (code);	1041	_exit (code);
1012		1042
1013	MODULE = Coro::State PACKAGE = Coro::Cont	1043	MODULE = Coro::State PACKAGE = Coro::Cont
1014		1044
1015	# this is slightly dirty (should expose a c-level api)
1016
1017	void	1045	void
1018	yield(...)	1046	yield (...)
1019	PROTOTYPE: @	1047	PROTOTYPE: @
1020	CODE:	1048	CODE:
		1049	{
1021	SV *yieldstack;	1050	SV *yieldstack;
1022	SV *sv;	1051	SV *sv;
1023	AV *defav = GvAV (PL_defgv);	1052	AV *defav = GvAV (PL_defgv);
1024	struct coro prev, next;	1053	struct coro prev, next;
1025		1054
…		…
1034	av_fill (defav, items - 1);	1063	av_fill (defav, items - 1);
1035	while (items--)	1064	while (items--)
1036	av_store (defav, items, SvREFCNT_inc (ST(items)));	1065	av_store (defav, items, SvREFCNT_inc (ST(items)));
1037		1066
1038	sv = av_pop ((AV *)SvRV (yieldstack));	1067	sv = av_pop ((AV *)SvRV (yieldstack));
1039	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));	1068	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1040	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));	1069	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1041	SvREFCNT_dec (sv);	1070	SvREFCNT_dec (sv);
1042		1071
1043	transfer (aTHX_ prev, next, 0);	1072	coro_state_transfer (aTHX_ prev, next, 0);
		1073	}
1044		1074
1045	MODULE = Coro::State PACKAGE = Coro	1075	MODULE = Coro::State PACKAGE = Coro
1046		1076
1047	# this is slightly dirty (should expose a c-level api)
1048
1049	BOOT:	1077	BOOT:
1050	{	1078	{
1051	int i;	1079	int i;
		1080
1052	HV *stash = gv_stashpv ("Coro", TRUE);	1081	coro_stash = gv_stashpv ("Coro", TRUE);
1053		1082
1054	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1083	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1055	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1084	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1056	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1085	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1057	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1086	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1058	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1087	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1059	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1088	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1060		1089
1061	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1090	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1062	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1091	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1063		1092
1064	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1093	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1072	coroapi.ready = api_ready;	1101	coroapi.ready = api_ready;
1073	coroapi.nready = &coro_nready;	1102	coroapi.nready = &coro_nready;
1074	coroapi.current = coro_current;	1103	coroapi.current = coro_current;
1075		1104
1076	GCoroAPI = &coroapi;	1105	GCoroAPI = &coroapi;
1077	sv_setiv(sv, (IV)&coroapi);	1106	sv_setiv (sv, (IV)&coroapi);
1078	SvREADONLY_on(sv);	1107	SvREADONLY_on (sv);
1079	}	1108	}
1080	}	1109	}
1081		1110
1082	#if !PERL_MICRO
1083
1084	void	1111	void
1085	ready(self)	1112	ready (SV *self)
1086	SV * self
1087	PROTOTYPE: $	1113	PROTOTYPE: $
1088	CODE:	1114	CODE:
1089	api_ready (self);	1115	api_ready (self);
1090		1116
1091	#endif
1092
1093	int	1117	int
1094	nready(...)	1118	nready (...)
1095	PROTOTYPE:	1119	PROTOTYPE:
1096	CODE:	1120	CODE:
1097	RETVAL = coro_nready;	1121	RETVAL = coro_nready;
1098	OUTPUT:	1122	OUTPUT:
1099	RETVAL	1123	RETVAL
1100		1124
1101	void	1125	void
1102	schedule(...)	1126	schedule (...)
1103	PROTOTYPE:	1127	PROTOTYPE:
1104	CODE:	1128	CODE:
1105	api_schedule ();	1129	api_schedule ();
1106		1130
1107	void	1131	void
		1132	_set_cede_self ()
		1133	CODE:
		1134	coro_cede_self = 1;
		1135
		1136	void
1108	cede(...)	1137	cede (...)
1109	PROTOTYPE:	1138	PROTOTYPE:
1110	CODE:	1139	CODE:
1111	api_cede ();	1140	api_cede ();
1112		1141
1113	# and these are hacks	1142	MODULE = Coro::State PACKAGE = Coro::AIO
		1143
1114	SV *	1144	SV *
1115	_aio_get_state ()	1145	_get_state ()
1116	CODE:	1146	CODE:
1117	{	1147	{
1118	struct {	1148	struct {
1119	int errorno;	1149	int errorno;
1120	int laststype;	1150	int laststype;
…		…
1131	}	1161	}
1132	OUTPUT:	1162	OUTPUT:
1133	RETVAL	1163	RETVAL
1134		1164
1135	void	1165	void
1136	_aio_set_state (char *data_)	1166	_set_state (char *data_)
1137	PROTOTYPE: $	1167	PROTOTYPE: $
1138	CODE:	1168	CODE:
1139	{	1169	{
1140	struct {	1170	struct {
1141	int errorno;	1171	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC vs. Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.80 by root, Thu Nov 2 20:00:00 2006 UTC vs.
Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC