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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.81 by root, Fri Nov 3 00:56:03 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 optional C context */
106	coro_stack *stack;
107	void *cursp;
108	int gencnt;
109
110	/* optionally saved, might be zero */	104	/* optionally saved, might be zero */
111	AV *defav;	105	AV *defav;
112	SV *defsv;	106	SV *defsv;
113	SV *errsv;	107	SV *errsv;
114		108
115	/* saved global state not related to stacks */	109	/* saved global state not related to stacks */
116	U8 dowarn;	110	U8 dowarn;
117	I32 in_eval;	111	I32 in_eval;
		112
		113	/* the c stack, if any */
		114	coro_stack *stack;
118		115
119	/* the stacks and related info (callchain etc..) */	116	/* the stacks and related info (callchain etc..) */
120	PERL_SI *curstackinfo;	117	PERL_SI *curstackinfo;
121	AV *curstack;	118	AV *curstack;
122	AV *mainstack;	119	AV *mainstack;
…		…
145	I32 retstack_max;	142	I32 retstack_max;
146	PMOP *curpm;	143	PMOP *curpm;
147	COP *curcop;	144	COP *curcop;
148	JMPENV *top_env;	145	JMPENV *top_env;
149		146
		147	/* coro process data */
		148	int prio;
		149
150	/* data associated with this coroutine (initial args) */	150	/* data associated with this coroutine (initial args) */
151	AV *args;	151	AV *args;
		152	int refcnt;
152	};	153	};
153		154
154	typedef struct coro *Coro__State;	155	typedef struct coro *Coro__State;
155	typedef struct coro *Coro__State_or_hashref;	156	typedef struct coro *Coro__State_or_hashref;
156		157
…		…
531	Safefree (PL_retstack);	532	Safefree (PL_retstack);
532	#endif	533	#endif
533	}	534	}
534		535
535	static void	536	static void
536	allocate_stack (Coro__State ctx, int alloc)	537	setup_coro (struct coro *coro)
537	{
538	coro_stack *stack;
539
540	New (0, stack, 1, coro_stack);
541
542	stack->refcnt = 1;
543	stack->usecnt = 1;
544	stack->gencnt = ctx->gencnt = 0;
545
546	if (alloc)
547	{
548	#if HAVE_MMAP
549	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
550	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
551	if (stack->sptr != (void *)-1)
552	{
553	# if STACKGUARD
554	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
555	# endif
556	}
557	else
558	#endif
559	{
560	stack->ssize = - (STACKSIZE * (long)sizeof (long));
561	New (0, stack->sptr, STACKSIZE, long);
562	}
563	}
564	else
565	stack->sptr = 0;
566
567	ctx->stack = stack;
568	}
569
570	static void
571	deallocate_stack (Coro__State ctx)
572	{
573	coro_stack *stack = ctx->stack;
574
575	ctx->stack = 0;
576
577	if (stack)
578	{
579	if (!--stack->refcnt)
580	{
581	#ifdef HAVE_MMAP
582	if (stack->ssize > 0 && stack->sptr)
583	munmap (stack->sptr, stack->ssize);
584	else
585	#endif
586	Safefree (stack->sptr);
587
588	Safefree (stack);
589	}
590	else if (ctx->gencnt == stack->gencnt)
591	--stack->usecnt;
592	}
593	}
594
595	static void
596	setup_coro (void *arg)
597	{	538	{
598	/*	539	/*
599	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
600	*/	541	*/
601	dTHX;	542	dTHX;
602	dSP;	543	dSP;
603	Coro__State ctx = (Coro__State)arg;	544	UNOP myop;
604	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
605		546
606	coro_init_stacks (aTHX);	547	coro_init_stacks (aTHX);
607	/PL_curcop = 0;/	548	/PL_curcop = 0;/
608	/PL_in_eval = PL_in_eval;/ /* inherit */	549	/PL_in_eval = PL_in_eval;/ /* inherit */
609	SvREFCNT_dec (GvAV (PL_defgv));	550	SvREFCNT_dec (GvAV (PL_defgv));
610	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	551	GvAV (PL_defgv) = coro->args; coro->args = 0;
611		552
612	SPAGAIN;	553	SPAGAIN;
613		554
614	if (ctx->stack)	555	Zero (&myop, 1, UNOP);
615	{	556	myop.op_next = Nullop;
616	ctx->cursp = 0;	557	myop.op_flags = OPf_WANT_VOID;
617		558
		559	PL_op = (OP *)&myop;
		560
618	PUSHMARK(SP);	561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
619	PUTBACK;	563	PUTBACK;
620	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		565	SPAGAIN;
621		566
622	if (SvTRUE (ERRSV))	567	ENTER; /* necessary e.g. for dounwind */
623	croak (NULL);	568	}
624	else	569
625	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;
626	}	577	}
627	else
628	{
629	UNOP myop;
630		578
631	Zero(&myop, 1, UNOP);	579	UNLOCK;
632	myop.op_next = Nullop;
633	myop.op_flags = OPf_WANT_VOID;
634
635	PL_op = (OP *)&myop;
636
637	PUSHMARK(SP);
638	XPUSHs (sub_init);
639	/*
640	* the next line is slightly wrong, as PL_op->op_next
641	* is actually being executed so we skip the first op.
642	* that doesn't matter, though, since it is only
643	* pp_nextstate and we never return...
644	* ah yes, and I don't care anyways ;)
645	*/
646	PUTBACK;
647	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
648	SPAGAIN;
649
650	ENTER; /* necessary e.g. for dounwind */
651	}
652	}	580	}
653		581
654	static void	582	static void
655	continue_coro (void *arg)	583	coro_run (void *arg)
656	{	584	{
657	/*	585	/*
658	* this is a _very_ stripped down perl interpreter ;)	586	* this is a _very_ stripped down perl interpreter ;)
659	*/	587	*/
660	dTHX;	588	dTHX;
661	Coro__State ctx = (Coro__State)arg;	589
		590	transfer_tail ();
662		591
663	PL_top_env = &PL_start_env;	592	PL_top_env = &PL_start_env;
664
665	ctx->cursp = 0;
666	PL_op = PL_op->op_next;	593	PL_restartop = PL_op->op_next;
667	CALLRUNOPS(aTHX);	594	/* somebody will hit me for both perl_run and PL_restart_top */
		595	perl_run (aTHX_ PERL_GET_CONTEXT);
668		596
669	abort ();	597	abort ();
670	}	598	}
671		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
672	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
673	transfer (pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
674	{	677	{
675	dSTACKLEVEL;	678	dSTACKLEVEL;
676		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
677	if (prev != next)	686	if (prev != next)
678	{	687	{
679	/* has this coro been created yet? */	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
680	if (next->mainstack)	697	if (next->mainstack)
681	{	698	{
682	LOCK;	699	/* coroutine already started */
683	SAVE (prev, flags);	700	SAVE (prev, flags);
684	LOAD (next);	701	LOAD (next);
685	UNLOCK;
686
687	/* mark this state as in-use */
688	next->mainstack = 0;
689	next->tmps_ix = -2;
690
691	/* stacklevel changed? if yes, grab the stack for us! */
692	if (flags & TRANSFER_SAVE_CCTXT)
693	{
694	if (!prev->stack)
695	allocate_stack (prev, 0);
696	else if (prev->cursp != stacklevel
697	&& prev->stack->usecnt > 1)
698	{
699	prev->gencnt = ++prev->stack->gencnt;
700	prev->stack->usecnt = 1;
701	}
702
703	/* has our stack been invalidated? */
704	if (next->stack && next->stack->gencnt != next->gencnt)
705	{
706	deallocate_stack (next);
707	allocate_stack (next, 1);
708	coro_create (&(next->stack->cctx),
709	continue_coro, (void *)next,
710	next->stack->sptr, labs (next->stack->ssize));
711	}
712
713	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
714	prev->cursp = stacklevel;
715	/* don't add any code here */
716	}
717	else
718	next->cursp = stacklevel;
719	}	702	}
720	else if (next->tmps_ix == -2)
721	croak ("tried to transfer to running coroutine");
722	else	703	else
723	{	704	{
724	LOCK;	705	/* need to start coroutine */
725	SAVE (prev, -1); /* first get rid of the old state */	706	/* first get rid of the old state */
726	UNLOCK;	707	SAVE (prev, -1);
727		708	/* setup coroutine call */
728	/* create the coroutine for the first time */
729	if (flags & TRANSFER_SAVE_CCTXT)
730	{
731	if (!prev->stack)
732	allocate_stack (prev, 0);
733
734	/* the new coroutine starts with start_env again */
735	PL_top_env = &PL_start_env;
736
737	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
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	RETVAL = coro;
958	OUTPUT:	986	OUTPUT:
959	RETVAL	987	RETVAL
960		988
961	void	989	void
962	transfer(prev, next, flags)	990	transfer (prev, next, flags)
963	SV *prev	991	SV *prev
964	SV *next	992	SV *next
965	int flags	993	int flags
966	PROTOTYPE: @
967	CODE:	994	CODE:
968	PUTBACK;	995	PUTBACK;
969	SV_CORO (next, "Coro::transfer");
970	SV_CORO (prev, "Coro::transfer");
971	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	996	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
972	SPAGAIN;	997	SPAGAIN;
973		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
974	void	1019	void
975	DESTROY(coro)	1020	_clear_idle_sp (Coro::State self)
976	Coro::State coro	1021	CODE:
977	CODE:	1022	self->stack->idle_sp = 0;
978
979	if (coro->mainstack && coro->mainstack != main_mainstack)
980	{
981	struct coro temp;
982
983	PUTBACK;
984	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
985	LOAD (aTHX_ coro);
986	SPAGAIN;
987
988	destroy_stacks (aTHX);
989
990	LOAD ((&temp)); /* this will get rid of defsv etc.. */
991	SPAGAIN;
992
993	coro->mainstack = 0;
994	}
995
996	deallocate_stack (coro);
997	SvREFCNT_dec (coro->args);
998	Safefree (coro);
999		1023
1000	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
1001	_exit(code)	1037	_exit (code)
1002	int code	1038	int code
1003	PROTOTYPE: $	1039	PROTOTYPE: $
1004	CODE:	1040	CODE:
1005	_exit (code);	1041	_exit (code);
1006		1042
1007	MODULE = Coro::State PACKAGE = Coro::Cont	1043	MODULE = Coro::State PACKAGE = Coro::Cont
1008		1044
1009	void	1045	void
1010	yield(...)	1046	yield (...)
1011	PROTOTYPE: @	1047	PROTOTYPE: @
1012	CODE:	1048	CODE:
		1049	{
1013	SV *yieldstack;	1050	SV *yieldstack;
1014	SV *sv;	1051	SV *sv;
1015	AV *defav = GvAV (PL_defgv);	1052	AV *defav = GvAV (PL_defgv);
1016	struct coro prev, next;	1053	struct coro prev, next;
1017		1054
…		…
1026	av_fill (defav, items - 1);	1063	av_fill (defav, items - 1);
1027	while (items--)	1064	while (items--)
1028	av_store (defav, items, SvREFCNT_inc (ST(items)));	1065	av_store (defav, items, SvREFCNT_inc (ST(items)));
1029		1066
1030	sv = av_pop ((AV *)SvRV (yieldstack));	1067	sv = av_pop ((AV *)SvRV (yieldstack));
1031	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));	1068	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1032	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));	1069	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1033	SvREFCNT_dec (sv);	1070	SvREFCNT_dec (sv);
1034		1071
1035	transfer (aTHX_ prev, next, 0);	1072	coro_state_transfer (aTHX_ prev, next, 0);
		1073	}
1036		1074
1037	MODULE = Coro::State PACKAGE = Coro	1075	MODULE = Coro::State PACKAGE = Coro
1038		1076
1039	BOOT:	1077	BOOT:
1040	{	1078	{
1041	int i;	1079	int i;
		1080
1042	HV *stash = gv_stashpv ("Coro", TRUE);	1081	coro_stash = gv_stashpv ("Coro", TRUE);
1043		1082
1044	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1083	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1045	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1084	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1046	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1085	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1047	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1086	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1048	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1087	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1049	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1088	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1050		1089
1051	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1090	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1052	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1091	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1053		1092
1054	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1093	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1067	sv_setiv (sv, (IV)&coroapi);	1106	sv_setiv (sv, (IV)&coroapi);
1068	SvREADONLY_on (sv);	1107	SvREADONLY_on (sv);
1069	}	1108	}
1070	}	1109	}
1071		1110
1072	#if !PERL_MICRO
1073
1074	void	1111	void
1075	ready(self)	1112	ready (SV *self)
1076	SV * self
1077	PROTOTYPE: $	1113	PROTOTYPE: $
1078	CODE:	1114	CODE:
1079	api_ready (self);	1115	api_ready (self);
1080		1116
1081	#endif
1082
1083	int	1117	int
1084	nready(...)	1118	nready (...)
1085	PROTOTYPE:	1119	PROTOTYPE:
1086	CODE:	1120	CODE:
1087	RETVAL = coro_nready;	1121	RETVAL = coro_nready;
1088	OUTPUT:	1122	OUTPUT:
1089	RETVAL	1123	RETVAL
1090		1124
1091	void	1125	void
1092	schedule(...)	1126	schedule (...)
1093	PROTOTYPE:	1127	PROTOTYPE:
1094	CODE:	1128	CODE:
1095	api_schedule ();	1129	api_schedule ();
1096		1130
1097	void	1131	void
		1132	_set_cede_self ()
		1133	CODE:
		1134	coro_cede_self = 1;
		1135
		1136	void
1098	cede(...)	1137	cede (...)
1099	PROTOTYPE:	1138	PROTOTYPE:
1100	CODE:	1139	CODE:
1101	api_cede ();	1140	api_cede ();
1102		1141
1103	# and these are hacks	1142	MODULE = Coro::State PACKAGE = Coro::AIO
		1143
1104	SV *	1144	SV *
1105	_aio_get_state ()	1145	_get_state ()
1106	CODE:	1146	CODE:
1107	{	1147	{
1108	struct {	1148	struct {
1109	int errorno;	1149	int errorno;
1110	int laststype;	1150	int laststype;
…		…
1121	}	1161	}
1122	OUTPUT:	1162	OUTPUT:
1123	RETVAL	1163	RETVAL
1124		1164
1125	void	1165	void
1126	_aio_set_state (char *data_)	1166	_set_state (char *data_)
1127	PROTOTYPE: $	1167	PROTOTYPE: $
1128	CODE:	1168	CODE:
1129	{	1169	{
1130	struct {	1170	struct {
1131	int errorno;	1171	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.81 by root, Fri Nov 3 00:56:03 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 1.81 by root, Fri Nov 3 00:56:03 2006 UTC vs.
Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC