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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.85 by root, Fri Nov 24 00:32:04 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
		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
672	/* never call directly, always through the coro_state_transfer global variable */	674	/* never call directly, always through the coro_state_transfer global variable */
673	static void	675	static void
674	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
675	{	677	{
676	dSTACKLEVEL;	678	dSTACKLEVEL;
677		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
678	if (prev != next)	686	if (prev != next)
679	{	687	{
680	/* 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
681	if (next->mainstack)	697	if (next->mainstack)
682	{	698	{
683	LOCK;	699	/* coroutine already started */
684	SAVE (prev, flags);	700	SAVE (prev, flags);
685	LOAD (next);	701	LOAD (next);
686	UNLOCK;
687
688	/* mark this state as in-use */
689	next->mainstack = 0;
690	next->tmps_ix = -2;
691
692	/* stacklevel changed? if yes, grab the stack for us! */
693	if (flags & TRANSFER_SAVE_CCTXT)
694	{
695	if (!prev->stack)
696	allocate_stack (prev, 0);
697	else if (prev->cursp != stacklevel
698	&& prev->stack->usecnt > 1)
699	{
700	prev->gencnt = ++prev->stack->gencnt;
701	prev->stack->usecnt = 1;
702	}
703
704	/* has our stack been invalidated? */
705	if (next->stack && next->stack->gencnt != next->gencnt)
706	{
707	deallocate_stack (next);
708	allocate_stack (next, 1);
709	coro_create (&(next->stack->cctx),
710	continue_coro, (void *)next,
711	next->stack->sptr, labs (next->stack->ssize));
712	}
713
714	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
715	prev->cursp = stacklevel;
716	/* don't add any code here */
717	}
718	else
719	next->cursp = stacklevel;
720	}	702	}
721	else if (next->tmps_ix == -2)
722	croak ("tried to transfer to running coroutine");
723	else	703	else
724	{	704	{
725	LOCK;	705	/* need to start coroutine */
726	SAVE (prev, -1); /* first get rid of the old state */	706	/* first get rid of the old state */
727	UNLOCK;	707	SAVE (prev, -1);
728		708	/* setup coroutine call */
729	/* create the coroutine for the first time */
730	if (flags & TRANSFER_SAVE_CCTXT)
731	{
732	if (!prev->stack)
733	allocate_stack (prev, 0);
734
735	/* the new coroutine starts with start_env again */
736	PL_top_env = &PL_start_env;
737
738	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)
739	{
740	setup_coro (next);
741	next->cursp = stacklevel;
742
743	prev->stack->refcnt++;
744	prev->stack->usecnt++;
745	next->stack = prev->stack;
746	next->gencnt = prev->gencnt;
747	}
748	else
749	{
750	assert (!next->stack);
751	allocate_stack (next, 1);
752	coro_create (&(next->stack->cctx),
753	setup_coro, (void *)next,
754	next->stack->sptr, labs (next->stack->ssize));
755	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
756	prev->cursp = stacklevel;
757	/* don't add any code here */
758	}
759	}
760	else
761	{
762	setup_coro (next);	709	setup_coro (next);
763	next->cursp = stacklevel;	710	/* need to change stack from main_stack to real one */
764	}	711	next->stack = 0;
765	}	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);
766	}	719	}
767		720
768	LOCK;	721	transfer_tail ();
769	if (coro_mortal)
770	{
771	SvREFCNT_dec (coro_mortal);
772	coro_mortal = 0;
773	}
774	UNLOCK;
775	}	722	}
776		723
777	/* use this function pointer to call the above function */	724	/* use this function pointer to call the above function */
778	/* this is done to increase chances of the compiler not inlining the call */	725	/* this is done to increase chances of the compiler not inlining the call */
779	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;	726	void (coro_state_transfer)(pTHX_ struct coro prev, struct coro *next, int flags) = transfer_impl;
780		727
781	#define SV_CORO(sv,func) \	728	static void
782	do { \	729	coro_state_destroy (struct coro *coro)
783	if (SvROK (sv)) \	730	{
784	sv = SvRV (sv); \	731	if (coro->refcnt--)
785	\	732	return;
786	if (SvTYPE (sv) == SVt_PVHV) \
787	{ \
788	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
789	\
790	if (!he) \
791	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
792	\
793	(sv) = SvRV (HeVAL(he)); \
794	} \
795	\
796	/* must also be changed inside Coro::Cont::yield */ \
797	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
798	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
799	\
800	} while(0)
801		733
802	#define SvSTATE(sv) INT2PTR (struct coro *, SvIVX (sv))	734	if (coro->mainstack && coro->mainstack != main_mainstack)
		735	{
		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
		745	coro->mainstack = 0;
		746	}
		747
		748	stack_free (coro->stack);
		749	SvREFCNT_dec (coro->args);
		750	Safefree (coro);
		751	}
		752
		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	}
803		797
804	static void	798	static void
805	api_transfer (pTHX_ SV prev, SV next, int flags)	799	api_transfer (pTHX_ SV prev, SV next, int flags)
806	{	800	{
807	SV_CORO (prev, "Coro::transfer");
808	SV_CORO (next, "Coro::transfer");
809
810	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	801	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
811	}	802	}
812		803
813	/ Coro ******************************************************************/	804	/ Coro ******************************************************************/
814		805
…		…
825	static int coro_nready;	816	static int coro_nready;
826		817
827	static void	818	static void
828	coro_enq (pTHX_ SV *sv)	819	coro_enq (pTHX_ SV *sv)
829	{	820	{
830	SV **xprio;
831	int prio;	821	int prio;
832		822
833	if (SvTYPE (sv) != SVt_PVHV)	823	if (SvTYPE (sv) != SVt_PVHV)
834	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");
835		825
836	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	826	prio = SvSTATE (sv)->prio;
837	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
838
839	prio = prio > PRIO_MAX ? PRIO_MAX
840	: prio < PRIO_MIN ? PRIO_MIN
841	: prio;
842		827
843	av_push (coro_ready [prio - PRIO_MIN], sv);	828	av_push (coro_ready [prio - PRIO_MIN], sv);
844	coro_nready++;	829	coro_nready++;
845	}	830	}
846		831
…		…
880	api_schedule (void)	865	api_schedule (void)
881	{	866	{
882	dTHX;	867	dTHX;
883		868
884	SV prev, next;	869	SV prev, next;
		870	SV *current = GvSV (coro_current);
885		871
		872	for (;;)
		873	{
886	LOCK;	874	LOCK;
887		875
888	prev = SvRV (GvSV (coro_current));
889	next = coro_deq (aTHX_ PRIO_MIN);	876	next = coro_deq (aTHX_ PRIO_MIN);
890		877
891	if (!next)	878	if (next)
892	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;
893		900
894	/* free this only after the transfer */	901	/* free this only after the transfer */
895	coro_mortal = prev;	902	coro_mortal = prev;
896	SV_CORO (prev, "Coro::schedule");
897
898	SvRV (GvSV (coro_current)) = next;
899
900	SV_CORO (next, "Coro::schedule");
901		903
902	UNLOCK;	904	UNLOCK;
903		905
904	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	906	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
905	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
906	}	907	}
		908
		909	static int coro_cede_self;
907		910
908	static void	911	static void
909	api_cede (void)	912	api_cede (void)
910	{	913	{
911	dTHX;	914	dTHX;
		915	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
912		916
913	LOCK;	917	LOCK;
914	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
915	UNLOCK;	930	UNLOCK;
916		931
917	api_schedule ();	932	api_schedule ();
918	}	933	}
919		934
920	MODULE = Coro::State PACKAGE = Coro::State	935	MODULE = Coro::State PACKAGE = Coro::State
921		936
922	PROTOTYPES: ENABLE	937	PROTOTYPES: DISABLE
923		938
924	BOOT:	939	BOOT:
925	{ /* {} necessary for stoopid perl-5.6.x */	940	{
926	#ifdef USE_ITHREADS	941	#ifdef USE_ITHREADS
927	MUTEX_INIT (&coro_mutex);	942	MUTEX_INIT (&coro_mutex);
928	#endif	943	#endif
929	BOOT_PAGESIZE;	944	BOOT_PAGESIZE;
930		945
931	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
932	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
933	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	946	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
934		947
935	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	948	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
936	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	949	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
937	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	950	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
938	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
939		951
940	main_mainstack = PL_mainstack;	952	main_mainstack = PL_mainstack;
941		953
942	coroapi.ver = CORO_API_VERSION;	954	coroapi.ver = CORO_API_VERSION;
943	coroapi.transfer = api_transfer;	955	coroapi.transfer = api_transfer;
944	}
945		956
946	Coro::State	957	Newz (0, main_stack, 1, coro_stack);
947	_newprocess(args)	958	main_stack->idle_sp = (void *)-1;
948	SV * args	959
949	PROTOTYPE: $	960	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		961	}
		962
		963	SV *
		964	new (char *klass, ...)
950	CODE:	965	CODE:
951	Coro__State coro;	966	{
		967	struct coro *coro;
		968	HV *hv;
		969	int i;
952		970
953	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
954	croak ("Coro::State::_newprocess expects an arrayref");
955
956	Newz (0, coro, 1, struct coro);	971	Newz (0, coro, 1, struct coro);
		972	coro->args = newAV ();
957		973
958	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;
959	/coro->mainstack = 0; //actual work is done inside transfer /	983	/coro->mainstack = 0; //actual work is done inside transfer /
960	/coro->stack = 0;/	984	/coro->stack = 0;/
961		985	}
962	RETVAL = coro;
963	OUTPUT:	986	OUTPUT:
964	RETVAL	987	RETVAL
965		988
966	void	989	void
967	transfer(prev, next, flags)	990	transfer (prev, next, flags)
968	SV *prev	991	SV *prev
969	SV *next	992	SV *next
970	int flags	993	int flags
971	PROTOTYPE: @
972	CODE:	994	CODE:
973	PUTBACK;	995	PUTBACK;
974	SV_CORO (next, "Coro::transfer");
975	SV_CORO (prev, "Coro::transfer");
976	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	996	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
977	SPAGAIN;	997	SPAGAIN;
978		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
979	void	1019	void
980	DESTROY(coro)	1020	_clear_idle_sp (Coro::State self)
981	Coro::State coro	1021	CODE:
982	CODE:	1022	self->stack->idle_sp = 0;
983
984	if (coro->mainstack && coro->mainstack != main_mainstack)
985	{
986	struct coro temp;
987
988	PUTBACK;
989	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
990	LOAD (aTHX_ coro);
991	SPAGAIN;
992
993	destroy_stacks (aTHX);
994
995	LOAD ((&temp)); /* this will get rid of defsv etc.. */
996	SPAGAIN;
997
998	coro->mainstack = 0;
999	}
1000
1001	deallocate_stack (coro);
1002	SvREFCNT_dec (coro->args);
1003	Safefree (coro);
1004		1023
1005	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
1006	_exit(code)	1037	_exit (code)
1007	int code	1038	int code
1008	PROTOTYPE: $	1039	PROTOTYPE: $
1009	CODE:	1040	CODE:
1010	_exit (code);	1041	_exit (code);
1011		1042
1012	MODULE = Coro::State PACKAGE = Coro::Cont	1043	MODULE = Coro::State PACKAGE = Coro::Cont
1013		1044
1014	void	1045	void
1015	yield(...)	1046	yield (...)
1016	PROTOTYPE: @	1047	PROTOTYPE: @
1017	CODE:	1048	CODE:
		1049	{
1018	SV *yieldstack;	1050	SV *yieldstack;
1019	SV *sv;	1051	SV *sv;
1020	AV *defav = GvAV (PL_defgv);	1052	AV *defav = GvAV (PL_defgv);
1021	struct coro prev, next;	1053	struct coro prev, next;
1022		1054
…		…
1031	av_fill (defav, items - 1);	1063	av_fill (defav, items - 1);
1032	while (items--)	1064	while (items--)
1033	av_store (defav, items, SvREFCNT_inc (ST(items)));	1065	av_store (defav, items, SvREFCNT_inc (ST(items)));
1034		1066
1035	sv = av_pop ((AV *)SvRV (yieldstack));	1067	sv = av_pop ((AV *)SvRV (yieldstack));
1036	prev = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 0, 0)));	1068	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1037	next = SvSTATE ((SV)SvRV (av_fetch ((AV *)SvRV (sv), 1, 0)));	1069	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1038	SvREFCNT_dec (sv);	1070	SvREFCNT_dec (sv);
1039		1071
1040	coro_state_transfer (aTHX_ prev, next, 0);	1072	coro_state_transfer (aTHX_ prev, next, 0);
		1073	}
1041		1074
1042	MODULE = Coro::State PACKAGE = Coro	1075	MODULE = Coro::State PACKAGE = Coro
1043		1076
1044	BOOT:	1077	BOOT:
1045	{	1078	{
1046	int i;	1079	int i;
		1080
1047	HV *stash = gv_stashpv ("Coro", TRUE);	1081	coro_stash = gv_stashpv ("Coro", TRUE);
1048		1082
1049	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1083	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1050	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1084	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1051	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1085	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1052	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1086	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1053	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1087	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1054	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1088	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1055		1089
1056	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1090	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1057	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1091	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1058		1092
1059	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1093	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1072	sv_setiv (sv, (IV)&coroapi);	1106	sv_setiv (sv, (IV)&coroapi);
1073	SvREADONLY_on (sv);	1107	SvREADONLY_on (sv);
1074	}	1108	}
1075	}	1109	}
1076		1110
1077	#if !PERL_MICRO
1078
1079	void	1111	void
1080	ready(self)	1112	ready (SV *self)
1081	SV * self
1082	PROTOTYPE: $	1113	PROTOTYPE: $
1083	CODE:	1114	CODE:
1084	api_ready (self);	1115	api_ready (self);
1085		1116
1086	#endif
1087
1088	int	1117	int
1089	nready(...)	1118	nready (...)
1090	PROTOTYPE:	1119	PROTOTYPE:
1091	CODE:	1120	CODE:
1092	RETVAL = coro_nready;	1121	RETVAL = coro_nready;
1093	OUTPUT:	1122	OUTPUT:
1094	RETVAL	1123	RETVAL
1095		1124
1096	void	1125	void
1097	schedule(...)	1126	schedule (...)
1098	PROTOTYPE:	1127	PROTOTYPE:
1099	CODE:	1128	CODE:
1100	api_schedule ();	1129	api_schedule ();
1101		1130
1102	void	1131	void
		1132	_set_cede_self ()
		1133	CODE:
		1134	coro_cede_self = 1;
		1135
		1136	void
1103	cede(...)	1137	cede (...)
1104	PROTOTYPE:	1138	PROTOTYPE:
1105	CODE:	1139	CODE:
1106	api_cede ();	1140	api_cede ();
1107		1141
1108	# and these are hacks	1142	MODULE = Coro::State PACKAGE = Coro::AIO
		1143
1109	SV *	1144	SV *
1110	_aio_get_state ()	1145	_get_state ()
1111	CODE:	1146	CODE:
1112	{	1147	{
1113	struct {	1148	struct {
1114	int errorno;	1149	int errorno;
1115	int laststype;	1150	int laststype;
…		…
1126	}	1161	}
1127	OUTPUT:	1162	OUTPUT:
1128	RETVAL	1163	RETVAL
1129		1164
1130	void	1165	void
1131	_aio_set_state (char *data_)	1166	_set_state (char *data_)
1132	PROTOTYPE: $	1167	PROTOTYPE: $
1133	CODE:	1168	CODE:
1134	{	1169	{
1135	struct {	1170	struct {
1136	int errorno;	1171	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.85 by root, Fri Nov 24 00:32:04 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 1.85 by root, Fri Nov 24 00:32:04 2006 UTC vs.
Revision 1.90 by root, Sat Nov 25 00:56:35 2006 UTC