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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 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
…		…
163	AV *padlist = CvPADLIST (cv);	161	AV *padlist = CvPADLIST (cv);
164	AV newpadlist, newpad;	162	AV newpadlist, newpad;
165		163
166	newpadlist = newAV ();	164	newpadlist = newAV ();
167	AvREAL_off (newpadlist);	165	AvREAL_off (newpadlist);
		166	#if PERL_VERSION < 9
168	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
169	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	171	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
170	--AvFILLp (padlist);	172	--AvFILLp (padlist);
171		173
172	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	174	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));
173	av_store (newpadlist, 1, (SV *)newpad);	175	av_store (newpadlist, 1, (SV *)newpad);
…		…
530	Safefree (PL_retstack);	532	Safefree (PL_retstack);
531	#endif	533	#endif
532	}	534	}
533		535
534	static void	536	static void
535	allocate_stack (Coro__State ctx, int alloc)	537	setup_coro (struct coro *coro)
536	{
537	coro_stack *stack;
538
539	New (0, stack, 1, coro_stack);
540
541	stack->refcnt = 1;
542	stack->usecnt = 1;
543	stack->gencnt = ctx->gencnt = 0;
544
545	if (alloc)
546	{
547	#if HAVE_MMAP
548	stack->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE; /* mmap should do allocate-on-write for us */
549	stack->sptr = mmap (0, stack->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
550	if (stack->sptr != (void *)-1)
551	{
552	# if STACKGUARD
553	mprotect (stack->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
554	# endif
555	}
556	else
557	#endif
558	{
559	stack->ssize = - (STACKSIZE * (long)sizeof (long));
560	New (0, stack->sptr, STACKSIZE, long);
561	}
562	}
563	else
564	stack->sptr = 0;
565
566	ctx->stack = stack;
567	}
568
569	static void
570	deallocate_stack (Coro__State ctx)
571	{
572	coro_stack *stack = ctx->stack;
573
574	ctx->stack = 0;
575
576	if (stack)
577	{
578	if (!--stack->refcnt)
579	{
580	#ifdef HAVE_MMAP
581	if (stack->ssize > 0 && stack->sptr)
582	munmap (stack->sptr, stack->ssize);
583	else
584	#endif
585	Safefree (stack->sptr);
586
587	Safefree (stack);
588	}
589	else if (ctx->gencnt == stack->gencnt)
590	--stack->usecnt;
591	}
592	}
593
594	static void
595	setup_coro (void *arg)
596	{	538	{
597	/*	539	/*
598	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
599	*/	541	*/
600	dTHX;	542	dTHX;
601	dSP;	543	dSP;
602	Coro__State ctx = (Coro__State)arg;	544	UNOP myop;
603	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);	545	SV sub_init = (SV )get_cv (SUB_INIT, FALSE);
604		546
605	coro_init_stacks (aTHX);	547	coro_init_stacks (aTHX);
606	/PL_curcop = 0;/	548	/PL_curcop = 0;/
607	/PL_in_eval = PL_in_eval;/ /* inherit */	549	/PL_in_eval = PL_in_eval;/ /* inherit */
608	SvREFCNT_dec (GvAV (PL_defgv));	550	SvREFCNT_dec (GvAV (PL_defgv));
609	GvAV (PL_defgv) = ctx->args; ctx->args = 0;	551	GvAV (PL_defgv) = coro->args; coro->args = 0;
610		552
611	SPAGAIN;	553	SPAGAIN;
612		554
613	if (ctx->stack)	555	Zero (&myop, 1, UNOP);
614	{	556	myop.op_next = Nullop;
615	ctx->cursp = 0;	557	myop.op_flags = OPf_WANT_VOID;
616		558
		559	PL_op = (OP *)&myop;
		560
617	PUSHMARK(SP);	561	PUSHMARK(SP);
		562	XPUSHs (sub_init);
618	PUTBACK;	563	PUTBACK;
619	(void) call_sv (sub_init, G_VOID\|G_NOARGS\|G_EVAL);	564	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
		565	SPAGAIN;
620		566
621	if (SvTRUE (ERRSV))	567	ENTER; /* necessary e.g. for dounwind */
622	croak (NULL);	568	}
623	else	569
624	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;
625	}	577	}
626	else
627	{
628	UNOP myop;
629		578
630	PL_op = (OP *)&myop;	579	UNLOCK;
631
632	Zero(&myop, 1, UNOP);
633	myop.op_next = Nullop;
634	myop.op_flags = OPf_WANT_VOID;
635
636	PUSHMARK(SP);
637	XPUSHs (sub_init);
638	/*
639	* the next line is slightly wrong, as PL_op->op_next
640	* is actually being executed so we skip the first op.
641	* that doesn't matter, though, since it is only
642	* pp_nextstate and we never return...
643	* ah yes, and I don't care anyways ;)
644	*/
645	PUTBACK;
646	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
647	SPAGAIN;
648
649	ENTER; /* necessary e.g. for dounwind */
650	}
651	}	580	}
652		581
653	static void	582	static void
654	continue_coro (void *arg)	583	coro_run (void *arg)
655	{	584	{
656	/*	585	/*
657	* this is a _very_ stripped down perl interpreter ;)	586	* this is a _very_ stripped down perl interpreter ;)
658	*/	587	*/
659	dTHX;	588	dTHX;
660	Coro__State ctx = (Coro__State)arg;
661		589
		590	transfer_tail ();
		591
662	PL_top_env = &ctx->start_env;	592	PL_top_env = &PL_start_env;
663
664	ctx->cursp = 0;
665	PL_op = PL_op->op_next;	593	PL_restartop = PL_op->op_next;
666	CALLRUNOPS(aTHX);	594	/* somebody will hit me for both perl_run and PL_restart_top */
		595	perl_run (aTHX_ PERL_GET_CONTEXT);
667		596
668	abort ();	597	abort ();
669	}	598	}
670		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
671	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
672	transfer (pTHX_ struct coro prev, struct coro next, int flags)	676	transfer_impl (pTHX_ struct coro prev, struct coro next, int flags)
673	{	677	{
674	dSTACKLEVEL;	678	dSTACKLEVEL;
675		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
676	if (prev != next)	686	if (prev != next)
677	{	687	{
678	if (next->mainstack)	688	coro_stack *prev_stack = prev->stack;
		689
		690	/* possibly "free" the stack */
		691	if (prev_stack->idle_sp == stacklevel)
679	{	692	{
680	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	{
681	SAVE (prev, flags);	707	SAVE (prev, flags);
682	LOAD (next);	708	LOAD (next);
683	UNLOCK;
684
685	/* mark this state as in-use */
686	next->mainstack = 0;
687	next->tmps_ix = -2;
688
689	/* stacklevel changed? if yes, grab the stack for us! */
690	if (flags & TRANSFER_SAVE_CCTXT)
691	{
692	if (!prev->stack)
693	allocate_stack (prev, 0);
694	else if (prev->cursp != stacklevel
695	&& prev->stack->usecnt > 1)
696	{
697	prev->gencnt = ++prev->stack->gencnt;
698	prev->stack->usecnt = 1;
699	}
700
701	/* has our stack been invalidated? */
702	if (next->stack && next->stack->gencnt != next->gencnt)
703	{
704	deallocate_stack (next);
705	allocate_stack (next, 1);
706	coro_create (&(next->stack->cctx),
707	continue_coro, (void *)next,
708	next->stack->sptr, labs (next->stack->ssize));
709	}
710
711	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));
712	prev->cursp = stacklevel;
713	/* don't add any code here */
714	}
715	else
716	next->cursp = stacklevel;
717	}	709	}
718	else if (next->tmps_ix == -2)
719	croak ("tried to transfer to running coroutine");
720	else
721	{
722	LOCK;
723	SAVE (prev, -1); /* first get rid of the old state */
724	UNLOCK;
725		710
726	if (flags & TRANSFER_SAVE_CCTXT)	711	if (!next->stack)
727	{	712	stack_get (next);
728	if (!prev->stack)
729	allocate_stack (prev, 0);
730		713
731	if (prev->stack->sptr && flags & TRANSFER_LAZY_STACK)	714	if (prev_stack != next->stack)
732	{
733	PL_top_env = &next->start_env;
734
735	setup_coro (next);
736	next->cursp = stacklevel;
737
738	prev->stack->refcnt++;
739	prev->stack->usecnt++;
740	next->stack = prev->stack;
741	next->gencnt = prev->gencnt;
742	}
743	else
744	{
745	assert (!next->stack);
746	allocate_stack (next, 1);
747	coro_create (&(next->stack->cctx),
748	setup_coro, (void *)next,
749	next->stack->sptr, labs (next->stack->ssize));
750	coro_transfer (&(prev->stack->cctx), &(next->stack->cctx));	715	coro_transfer (&prev_stack->cctx, &next->stack->cctx);
751	prev->cursp = stacklevel;
752	/* don't add any code here */
753	}
754	}
755	else
756	{
757	setup_coro (next);
758	next->cursp = stacklevel;
759	}
760	}
761	}	716	}
762		717
763	LOCK;	718	transfer_tail ();
764	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)
765	{	732	{
766	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
767	coro_mortal = 0;	742	coro->mainstack = 0;
768	}	743	}
769	UNLOCK;
770	}
771		744
772	#define SV_CORO(sv,func) \	745	stack_free (coro->stack);
773	do { \	746	SvREFCNT_dec (coro->args);
774	if (SvROK (sv)) \	747	Safefree (coro);
775	sv = SvRV (sv); \	748	}
776	\
777	if (SvTYPE (sv) == SVt_PVHV) \
778	{ \
779	HE he = hv_fetch_ent ((HV )sv, ucoro_state_sv, 0, ucoro_state_hash); \
780	\
781	if (!he) \
782	croak ("%s() -- %s is a hashref but lacks the " UCORO_STATE " key", func, # sv); \
783	\
784	(sv) = SvRV (HeVAL(he)); \
785	} \
786	\
787	/* must also be changed inside Coro::Cont::yield */ \
788	if (!SvOBJECT (sv) \|\| SvSTASH (sv) != coro_state_stash) \
789	croak ("%s() -- %s is not (and contains not) a Coro::State object", func, # sv); \
790	\
791	} while(0)
792		749
793	#define SvSTATE(sv) INT2PTR (struct coro *, SvIV (sv))
794
795	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
796	api_transfer(pTHX_ SV prev, SV next, int flags)	796	api_transfer (pTHX_ SV prev, SV next, int flags)
797	{	797	{
798	SV_CORO (prev, "Coro::transfer");
799	SV_CORO (next, "Coro::transfer");
800
801	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	798	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
802	}	799	}
803		800
804	/ Coro ******************************************************************/	801	/ Coro ******************************************************************/
805		802
806	#define PRIO_MAX 3	803	#define PRIO_MAX 3
…		…
810	#define PRIO_IDLE -3	807	#define PRIO_IDLE -3
811	#define PRIO_MIN -4	808	#define PRIO_MIN -4
812		809
813	/* for Coro.pm */	810	/* for Coro.pm */
814	static GV coro_current, coro_idle;	811	static GV coro_current, coro_idle;
815	static AV *coro_ready[PRIO_MAX-PRIO_MIN+1];	812	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
816	static int coro_nready;	813	static int coro_nready;
817		814
818	static void	815	static void
819	coro_enq (pTHX_ SV *sv)	816	coro_enq (pTHX_ SV *sv)
820	{	817	{
821	SV **xprio;
822	int prio;	818	int prio;
823		819
824	if (SvTYPE (sv) != SVt_PVHV)	820	if (SvTYPE (sv) != SVt_PVHV)
825	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");
826		822
827	xprio = hv_fetch ((HV *)sv, "prio", 4, 0);	823	prio = SvSTATE (sv)->prio;
828	prio = xprio ? SvIV (*xprio) : PRIO_NORMAL;
829
830	prio = prio > PRIO_MAX ? PRIO_MAX
831	: prio < PRIO_MIN ? PRIO_MIN
832	: prio;
833		824
834	av_push (coro_ready [prio - PRIO_MIN], sv);	825	av_push (coro_ready [prio - PRIO_MIN], sv);
835	coro_nready++;	826	coro_nready++;
836	}	827	}
837		828
…		…
843	min_prio -= PRIO_MIN;	834	min_prio -= PRIO_MIN;
844	if (min_prio < 0)	835	if (min_prio < 0)
845	min_prio = 0;	836	min_prio = 0;
846		837
847	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	838	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
848	if (av_len (coro_ready[prio]) >= 0)	839	if (AvFILLp (coro_ready [prio]) >= 0)
849	{	840	{
850	coro_nready--;	841	coro_nready--;
851	return av_shift (coro_ready[prio]);	842	return av_shift (coro_ready [prio]);
852	}	843	}
853		844
854	return 0;	845	return 0;
855	}	846	}
856		847
…		…
871	api_schedule (void)	862	api_schedule (void)
872	{	863	{
873	dTHX;	864	dTHX;
874		865
875	SV prev, next;	866	SV prev, next;
		867	SV *current = GvSV (coro_current);
876		868
		869	for (;;)
		870	{
877	LOCK;	871	LOCK;
878		872
879	prev = SvRV (GvSV (coro_current));
880	next = coro_deq (aTHX_ PRIO_MIN);	873	next = coro_deq (aTHX_ PRIO_MIN);
881		874
882	if (!next)	875	if (next)
883	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;
884		897
885	/* free this only after the transfer */	898	/* free this only after the transfer */
886	coro_mortal = prev;	899	coro_mortal = prev;
887	SV_CORO (prev, "Coro::schedule");
888
889	SvRV (GvSV (coro_current)) = next;
890
891	SV_CORO (next, "Coro::schedule");
892		900
893	UNLOCK;	901	UNLOCK;
894		902
895	transfer (aTHX_ SvSTATE (prev), SvSTATE (next),	903	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), TRANSFER_SAVE_ALL);
896	TRANSFER_SAVE_ALL \| TRANSFER_LAZY_STACK);
897	}	904	}
		905
		906	static int coro_cede_self;
898		907
899	static void	908	static void
900	api_cede (void)	909	api_cede (void)
901	{	910	{
902	dTHX;	911	dTHX;
		912	SV *current = SvREFCNT_inc (SvRV (GvSV (coro_current)));
903		913
904	LOCK;	914	LOCK;
905	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
906	UNLOCK;	927	UNLOCK;
907		928
908	api_schedule ();	929	api_schedule ();
909	}	930	}
910		931
911	MODULE = Coro::State PACKAGE = Coro::State	932	MODULE = Coro::State PACKAGE = Coro::State
912		933
913	PROTOTYPES: ENABLE	934	PROTOTYPES: DISABLE
914		935
915	BOOT:	936	BOOT:
916	{ /* {} necessary for stoopid perl-5.6.x */	937	{
917	#ifdef USE_ITHREADS	938	#ifdef USE_ITHREADS
918	MUTEX_INIT (&coro_mutex);	939	MUTEX_INIT (&coro_mutex);
919	#endif	940	#endif
920	BOOT_PAGESIZE;	941	BOOT_PAGESIZE;
921		942
922	ucoro_state_sv = newSVpv (UCORO_STATE, sizeof(UCORO_STATE) - 1);
923	PERL_HASH(ucoro_state_hash, UCORO_STATE, sizeof(UCORO_STATE) - 1);
924	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	943	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
925		944
926	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	945	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));
927	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	946	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));
928	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	947	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));
929	newCONSTSUB (coro_state_stash, "SAVE_CCTXT", newSViv (TRANSFER_SAVE_CCTXT));
930		948
931	main_mainstack = PL_mainstack;	949	main_mainstack = PL_mainstack;
932		950
933	coroapi.ver = CORO_API_VERSION;	951	coroapi.ver = CORO_API_VERSION;
934	coroapi.transfer = api_transfer;	952	coroapi.transfer = api_transfer;
935	}
936		953
937	Coro::State	954	Newz (0, main_stack, 1, coro_stack);
938	_newprocess(args)	955	main_stack->idle_sp = (void *)-1;
939	SV * args	956
940	PROTOTYPE: $	957	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
		958	}
		959
		960	SV *
		961	new (char *klass, ...)
941	CODE:	962	CODE:
942	Coro__State coro;	963	{
		964	struct coro *coro;
		965	HV *hv;
		966	int i;
943		967
944	if (!SvROK (args) \|\| SvTYPE (SvRV (args)) != SVt_PVAV)
945	croak ("Coro::State::_newprocess expects an arrayref");
946
947	Newz (0, coro, 1, struct coro);	968	Newz (0, coro, 1, struct coro);
		969	coro->args = newAV ();
948		970
949	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;
950	/coro->mainstack = 0; //actual work is done inside transfer /	980	/coro->mainstack = 0; //actual work is done inside transfer /
951	/coro->stack = 0;/	981	/coro->stack = 0;/
952		982	}
953	/* same as JMPENV_BOOTSTRAP */
954	/* we might be able to recycle start_env, but safe is safe */
955	/Zero(&coro->start_env, 1, JMPENV);/
956	coro->start_env.je_ret = -1;
957	coro->start_env.je_mustcatch = TRUE;
958
959	RETVAL = coro;
960	OUTPUT:	983	OUTPUT:
961	RETVAL	984	RETVAL
962		985
963	void	986	void
964	transfer(prev, next, flags)	987	transfer (prev, next, flags)
965	SV *prev	988	SV *prev
966	SV *next	989	SV *next
967	int flags	990	int flags
968	PROTOTYPE: @
969	CODE:	991	CODE:
970	PUTBACK;	992	PUTBACK;
971	SV_CORO (next, "Coro::transfer");
972	SV_CORO (prev, "Coro::transfer");
973	transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);	993	coro_state_transfer (aTHX_ SvSTATE (prev), SvSTATE (next), flags);
974	SPAGAIN;	994	SPAGAIN;
975		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
976	void	1016	void
977	DESTROY(coro)	1017	_clear_idle_sp (Coro::State self)
978	Coro::State coro	1018	CODE:
979	CODE:	1019	self->stack->idle_sp = 0;
980
981	if (coro->mainstack && coro->mainstack != main_mainstack)
982	{
983	struct coro temp;
984
985	PUTBACK;
986	SAVE (aTHX_ (&temp), TRANSFER_SAVE_ALL);
987	LOAD (aTHX_ coro);
988	SPAGAIN;
989
990	destroy_stacks (aTHX);
991
992	LOAD ((&temp)); /* this will get rid of defsv etc.. */
993	SPAGAIN;
994
995	coro->mainstack = 0;
996	}
997
998	deallocate_stack (coro);
999	SvREFCNT_dec (coro->args);
1000	Safefree (coro);
1001		1020
1002	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
1003	_exit(code)	1034	_exit (code)
1004	int code	1035	int code
1005	PROTOTYPE: $	1036	PROTOTYPE: $
1006	CODE:	1037	CODE:
1007	_exit (code);	1038	_exit (code);
1008		1039
1009	MODULE = Coro::State PACKAGE = Coro::Cont	1040	MODULE = Coro::State PACKAGE = Coro::Cont
1010		1041
1011	# this is slightly dirty (should expose a c-level api)
1012
1013	void	1042	void
1014	yield(...)	1043	yield (...)
1015	PROTOTYPE: @	1044	PROTOTYPE: @
1016	CODE:	1045	CODE:
		1046	{
1017	SV *yieldstack;	1047	SV *yieldstack;
1018	SV *sv;	1048	SV *sv;
1019	AV *defav = GvAV (PL_defgv);	1049	AV *defav = GvAV (PL_defgv);
1020	struct coro prev, next;	1050	struct coro prev, next;
1021		1051
…		…
1030	av_fill (defav, items - 1);	1060	av_fill (defav, items - 1);
1031	while (items--)	1061	while (items--)
1032	av_store (defav, items, SvREFCNT_inc (ST(items)));	1062	av_store (defav, items, SvREFCNT_inc (ST(items)));
1033		1063
1034	sv = av_pop ((AV *)SvRV (yieldstack));	1064	sv = av_pop ((AV *)SvRV (yieldstack));
1035	prev = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 0, 0))));	1065	prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1036	next = INT2PTR (struct coro , SvIV ((SV)SvRV (av_fetch ((AV )SvRV (sv), 1, 0))));	1066	next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1037	SvREFCNT_dec (sv);	1067	SvREFCNT_dec (sv);
1038		1068
1039	transfer (aTHX_ prev, next, 0);	1069	coro_state_transfer (aTHX_ prev, next, 0);
		1070	}
1040		1071
1041	MODULE = Coro::State PACKAGE = Coro	1072	MODULE = Coro::State PACKAGE = Coro
1042		1073
1043	# this is slightly dirty (should expose a c-level api)
1044
1045	BOOT:	1074	BOOT:
1046	{	1075	{
1047	int i;	1076	int i;
		1077
1048	HV *stash = gv_stashpv ("Coro", TRUE);	1078	coro_stash = gv_stashpv ("Coro", TRUE);
1049		1079
1050	newCONSTSUB (stash, "PRIO_MAX", newSViv (PRIO_MAX));	1080	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1051	newCONSTSUB (stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1081	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1052	newCONSTSUB (stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1082	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1053	newCONSTSUB (stash, "PRIO_LOW", newSViv (PRIO_LOW));	1083	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1054	newCONSTSUB (stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1084	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1055	newCONSTSUB (stash, "PRIO_MIN", newSViv (PRIO_MIN));	1085	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1056		1086
1057	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1087	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);
1058	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1088	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);
1059		1089
1060	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1090	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
…		…
1068	coroapi.ready = api_ready;	1098	coroapi.ready = api_ready;
1069	coroapi.nready = &coro_nready;	1099	coroapi.nready = &coro_nready;
1070	coroapi.current = coro_current;	1100	coroapi.current = coro_current;
1071		1101
1072	GCoroAPI = &coroapi;	1102	GCoroAPI = &coroapi;
1073	sv_setiv(sv, (IV)&coroapi);	1103	sv_setiv (sv, (IV)&coroapi);
1074	SvREADONLY_on(sv);	1104	SvREADONLY_on (sv);
1075	}	1105	}
1076	}	1106	}
1077		1107
1078	#if !PERL_MICRO
1079
1080	void	1108	void
1081	ready(self)	1109	ready (SV *self)
1082	SV * self
1083	PROTOTYPE: $	1110	PROTOTYPE: $
1084	CODE:	1111	CODE:
1085	api_ready (self);	1112	api_ready (self);
1086		1113
1087	#endif
1088
1089	int	1114	int
1090	nready(...)	1115	nready (...)
1091	PROTOTYPE:	1116	PROTOTYPE:
1092	CODE:	1117	CODE:
1093	RETVAL = coro_nready;	1118	RETVAL = coro_nready;
1094	OUTPUT:	1119	OUTPUT:
1095	RETVAL	1120	RETVAL
1096		1121
1097	void	1122	void
1098	schedule(...)	1123	schedule (...)
1099	PROTOTYPE:	1124	PROTOTYPE:
1100	CODE:	1125	CODE:
1101	api_schedule ();	1126	api_schedule ();
1102		1127
1103	void	1128	void
		1129	_set_cede_self ()
		1130	CODE:
		1131	coro_cede_self = 1;
		1132
		1133	void
1104	cede(...)	1134	cede (...)
1105	PROTOTYPE:	1135	PROTOTYPE:
1106	CODE:	1136	CODE:
1107	api_cede ();	1137	api_cede ();
1108		1138
1109	# and these are hacks	1139	MODULE = Coro::State PACKAGE = Coro::AIO
		1140
1110	SV *	1141	SV *
1111	_aio_get_state ()	1142	_get_state ()
1112	CODE:	1143	CODE:
1113	{	1144	{
1114	struct {	1145	struct {
1115	int errorno;	1146	int errorno;
1116	int laststype;	1147	int laststype;
…		…
1127	}	1158	}
1128	OUTPUT:	1159	OUTPUT:
1129	RETVAL	1160	RETVAL
1130		1161
1131	void	1162	void
1132	_aio_set_state (char *data_)	1163	_set_state (char *data_)
1133	PROTOTYPE: $	1164	PROTOTYPE: $
1134	CODE:	1165	CODE:
1135	{	1166	{
1136	struct {	1167	struct {
1137	int errorno;	1168	int errorno;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.78 by root, Wed Nov 1 01:21:21 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 1.78 by root, Wed Nov 1 01:21:21 2006 UTC vs.
Revision 1.89 by root, Sat Nov 25 00:40:26 2006 UTC