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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC vs.
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC

…		…
31	#else	31	#else
32	# define PAGESIZE 0	32	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
34	#endif	34	#endif
35		35
36	#if USE_VALGRIND	36	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	37	# include <valgrind/valgrind.h>
		38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		39	#else
		40	# define REGISTER_STACK(cctx,start,end)
38	#endif	41	#endif
39		42
40	/* the maximum number of idle cctx that will be pooled */	43	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	44	#define MAX_IDLE_CCTX 8
42		45
…		…
71	#ifndef SvRV_set	74	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	75	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	76	#endif
74		77
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	79	# undef CORO_STACKGUARD
77	#endif	80	#endif
78		81
79	#ifndef STACKGUARD	82	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	83	# define CORO_STACKGUARD 0
81	#endif	84	#endif
82		85
83	/* prefer perl internal functions over our own? */	86	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	87	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	88	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	89	#endif
87		90
88	/* The next macro should declare a variable stacklevel that contains and approximation	91	/* The next macro should declare a variable stacklevel that contains and approximation
89	* to the current C stack pointer. Its property is that it changes with each call	92	* to the current C stack pointer. Its property is that it changes with each call
90	* and should be unique. */	93	* and should be unique. */
…		…
93		96
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	97	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		98
96	#if __GNUC__ >= 3	99	#if __GNUC__ >= 3
97	# define attribute(x) __attribute__(x)	100	# define attribute(x) __attribute__(x)
		101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
98	#else	102	#else
99	# define attribute(x)	103	# define attribute(x)
		104	# define BARRIER
100	#endif	105	#endif
101		106
102	#define NOINLINE attribute ((noinline))	107	#define NOINLINE attribute ((noinline))
103		108
104	#include "CoroAPI.h"	109	#include "CoroAPI.h"
…		…
110	#else	115	#else
111	# define LOCK (void)0	116	# define LOCK (void)0
112	# define UNLOCK (void)0	117	# define UNLOCK (void)0
113	#endif	118	#endif
114		119
		120	/* helper storage struct for Coro::AIO */
115	struct io_state	121	struct io_state
116	{	122	{
117	int errorno;	123	int errorno;
118	I32 laststype;	124	I32 laststype;
119	int laststatval;	125	int laststatval;
…		…
132	typedef struct coro_cctx {	138	typedef struct coro_cctx {
133	struct coro_cctx *next;	139	struct coro_cctx *next;
134		140
135	/* the stack */	141	/* the stack */
136	void *sptr;	142	void *sptr;
137	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
138		144
139	/* cpu state */	145	/* cpu state */
140	void idle_sp; / sp of top-level transfer/schedule/cede call */	146	void idle_sp; / sp of top-level transfer/schedule/cede call */
		147	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
141	JMPENV *top_env;	148	JMPENV *top_env;
142	coro_context cctx;	149	coro_context cctx;
143		150
144	int inuse;	151	int inuse;
145		152
146	#if USE_VALGRIND	153	#if CORO_USE_VALGRIND
147	int valgrind_id;	154	int valgrind_id;
148	#endif	155	#endif
149	} coro_cctx;	156	} coro_cctx;
150		157
151	enum {	158	enum {
152	CF_RUNNING = 0x0001, /* coroutine is running */	159	CF_RUNNING = 0x0001, /* coroutine is running */
153	CF_READY = 0x0002, /* coroutine is ready */	160	CF_READY = 0x0002, /* coroutine is ready */
154	CF_NEW = 0x0004, /* ahs never been switched to */	161	CF_NEW = 0x0004, /* has never been switched to */
		162	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
155	};	163	};
156		164
157	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
158	struct coro {	166	struct coro {
159	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
…		…
181	};	189	};
182		190
183	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
184	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
185		193
		194	/ Coro ******************************************************************/
		195
		196	#define PRIO_MAX 3
		197	#define PRIO_HIGH 1
		198	#define PRIO_NORMAL 0
		199	#define PRIO_LOW -1
		200	#define PRIO_IDLE -3
		201	#define PRIO_MIN -4
		202
		203	/* for Coro.pm */
		204	static SV *coro_current;
		205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		206	static int coro_nready;
		207
		208	/ lowlevel stuff ********************************************************/
		209
186	static AV *	210	static AV *
187	coro_clone_padlist (CV *cv)	211	coro_clone_padlist (CV *cv)
188	{	212	{
189	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
190	AV newpadlist, newpad;	214	AV newpadlist, newpad;
…		…
264		288
265	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
266	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
267	else	291	else
268	{	292	{
269	#if PREFER_PERL_FUNCTIONS	293	#if CORO_PREFER_PERL_FUNCTIONS
270	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
271	CV *cp = Perl_cv_clone (cv);	295	CV *cp = Perl_cv_clone (cv);
272	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
273	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
274	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
…		…
297	if (AvFILLp (av) >= AvMAX (av))	321	if (AvFILLp (av) >= AvMAX (av))
298	av_extend (av, AvMAX (av) + 1);	322	av_extend (av, AvMAX (av) + 1);
299		323
300	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
301	}	325	}
		326
		327	/ load & save, init *****************************************************/
302		328
303	#define SB do {	329	#define SB do {
304	#define SE } while (0)	330	#define SE } while (0)
305		331
306	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
…		…
339	CvPADLIST (cv) = (AV *)POPs;	365	CvPADLIST (cv) = (AV *)POPs;
340	}	366	}
341		367
342	PUTBACK;	368	PUTBACK;
343	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
344	}	371	}
345		372
346	static void	373	static void
347	save_perl (Coro__State c)	374	save_perl (Coro__State c)
348	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
349	{	377	{
350	dSP;	378	dSP;
351	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
352	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
353	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
408	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
409	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
410	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
411	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
412	*/	440	*/
413	#if PREFER_PERL_FUNCTIONS	441	#if CORO_PREFER_PERL_FUNCTIONS
414	# define coro_init_stacks init_stacks	442	# define coro_init_stacks init_stacks
415	#else	443	#else
416	static void	444	static void
417	coro_init_stacks ()	445	coro_init_stacks ()
418	{	446	{
…		…
468		496
469	/* free all temporaries */	497	/* free all temporaries */
470	FREETMPS;	498	FREETMPS;
471	assert (PL_tmps_ix == -1);	499	assert (PL_tmps_ix == -1);
472		500
		501	/* unwind all extra stacks */
473	POPSTACK_TO (PL_mainstack);	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
474	}	506	}
475		507
476	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
477	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
478		510
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	527	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	528	Safefree (PL_retstack);
497	#endif	529	#endif
498	}	530	}
499		531
		532	/ coroutine stack handling **********************************************/
		533
500	static void	534	static void
501	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
502	{	536	{
503	/*	537	/*
504	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
…		…
506		540
507	coro_init_stacks ();	541	coro_init_stacks ();
508		542
509	PL_curcop = &PL_compiling;	543	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
511	PL_curpm = 0;	546	PL_curpm = 0;
512	PL_localizing = 0;	547	PL_localizing = 0;
513	PL_dirty = 0;	548	PL_dirty = 0;
514	PL_restartop = 0;	549	PL_restartop = 0;
515		550
…		…
597		632
598	Newz (0, cctx, 1, coro_cctx);	633	Newz (0, cctx, 1, coro_cctx);
599		634
600	#if HAVE_MMAP	635	#if HAVE_MMAP
601		636
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	638	/* mmap supposedly does allocate-on-write for us */
604	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605		640
606	if (cctx->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	642	{
611
612	# if STACKGUARD	643	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	645	# endif
615		646	REGISTER_STACK (
616	#else	647	cctx,
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)
622	{
623	perror ("FATAL: unable to malloc stack for coroutine");
624	_exit (EXIT_FAILURE);
625	}
626
627	#endif
628
629	#if USE_VALGRIND
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr	649	cctx->ssize + (char *)cctx->sptr
633	);	650	);
634	#endif
635		651
636	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
		653	}
		654	else
		655	#endif
		656	{
		657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, CORO_STACKSIZE, long);
		659
		660	if (!cctx->sptr)
		661	{
		662	perror ("FATAL: unable to allocate stack for coroutine");
		663	_exit (EXIT_FAILURE);
		664	}
		665
		666	REGISTER_STACK (
		667	cctx,
		668	(char *)cctx->sptr,
		669	(char *)cctx->sptr - cctx->ssize
		670	);
		671
		672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);
		673	}
637		674
638	return cctx;	675	return cctx;
639	}	676	}
640		677
641	static void	678	static void
…		…
644	if (!cctx)	681	if (!cctx)
645	return;	682	return;
646		683
647	--cctx_count;	684	--cctx_count;
648		685
649	#if USE_VALGRIND	686	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	688	#endif
652		689
653	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
654	munmap (cctx->sptr, cctx->ssize);	692	munmap (cctx->sptr, cctx->ssize);
655	#else	693	else
		694	#endif
656	Safefree (cctx->sptr);	695	Safefree (cctx->sptr);
657	#endif
658		696
659	Safefree (cctx);	697	Safefree (cctx);
660	}	698	}
661		699
662	static coro_cctx *	700	static coro_cctx *
…		…
696	++cctx_idle;	734	++cctx_idle;
697	cctx->next = cctx_first;	735	cctx->next = cctx_first;
698	cctx_first = cctx;	736	cctx_first = cctx;
699	}	737	}
700		738
		739	/ coroutine switching ***************************************************/
		740
701	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
702	static void NOINLINE	742	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	743	transfer (struct coro prev, struct coro next)
704	{	744	{
705	dSTACKLEVEL;	745	dSTACKLEVEL;
706		746
707	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	748	if (!next)
709	{	749	{
710	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
711	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	751	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
712	}	752	}
713	else if (prev != next)	753	else if (prev != next)
714	{	754	{
715	coro_cctx *prev__cctx;	755	coro_cctx *prev__cctx;
716		756
…		…
727	if (!prev->flags & CF_RUNNING)	767	if (!prev->flags & CF_RUNNING)
728	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
729		769
730	if (next->flags & CF_RUNNING)	770	if (next->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		772
		773	if (next->flags & CF_DESTROYED)
		774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
732		775
733	prev->flags &= ~CF_RUNNING;	776	prev->flags &= ~CF_RUNNING;
734	next->flags \|= CF_RUNNING;	777	next->flags \|= CF_RUNNING;
735		778
736	LOCK;	779	LOCK;
…		…
757		800
758	/* possibly "free" the cctx */	801	/* possibly "free" the cctx */
759	if (prev__cctx->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
760	{	803	{
761	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
762	assert (PL_top_env == prev__cctx->top_env);	805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
763		806
764	prev->cctx = 0;	807	prev->cctx = 0;
765		808
766	cctx_put (prev__cctx);	809	cctx_put (prev__cctx);
767	prev__cctx->inuse = 0;	810	prev__cctx->inuse = 0;
…		…
780	PL_top_env = next->cctx->top_env;	823	PL_top_env = next->cctx->top_env;
781	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
782	}	825	}
783		826
784	free_coro_mortal ();	827	free_coro_mortal ();
785
786	UNLOCK;	828	UNLOCK;
787	}	829	}
788	}	830	}
789		831
790	struct transfer_args	832	struct transfer_args
…		…
792	struct coro prev, next;	834	struct coro prev, next;
793	};	835	};
794		836
795	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
796		838
		839	/ high level stuff ******************************************************/
		840
797	static void	841	static int
798	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
799	{	843	{
800	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
801	return;	845	return 0;
		846
		847	coro->flags \|= CF_DESTROYED;
		848
		849	if (coro->flags & CF_READY)
		850	{
		851	/* reduce nready, as destroying a ready coro effectively unreadies it */
		852	/* alternative: look through all ready queues and remove the coro */
		853	LOCK;
		854	--coro_nready;
		855	UNLOCK;
		856	}
		857	else
		858	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
802		859
803	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
804	{	861	{
805	struct coro temp;	862	struct coro temp;
		863
		864	assert (!(coro->flags & CF_RUNNING));
		865
806	Zero (&temp, 1, struct coro);	866	Zero (&temp, 1, struct coro);
807	temp.save = CORO_SAVE_ALL;	867	temp.save = CORO_SAVE_ALL;
808		868
809	if (coro->flags & CF_RUNNING)	869	if (coro->flags & CF_RUNNING)
810	croak ("FATAL: tried to destroy currently running coroutine");	870	croak ("FATAL: tried to destroy currently running coroutine");
…		…
819	coro->mainstack = 0;	879	coro->mainstack = 0;
820	}	880	}
821		881
822	cctx_destroy (coro->cctx);	882	cctx_destroy (coro->cctx);
823	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
824	Safefree (coro);	884
		885	return 1;
825	}	886	}
826		887
827	static int	888	static int
828	coro_state_clear (pTHX_ SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
829	{	890	{
830	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
831	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
832		893
		894	if (--coro->refcnt < 0)
		895	{
833	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
834		899
835	return 0;	900	return 0;
836	}	901	}
837		902
838	static int	903	static int
…		…
845	return 0;	910	return 0;
846	}	911	}
847		912
848	static MGVTBL coro_state_vtbl = {	913	static MGVTBL coro_state_vtbl = {
849	0, 0, 0, 0,	914	0, 0, 0, 0,
850	coro_state_clear,	915	coro_state_free,
851	0,	916	0,
852	#ifdef MGf_DUP	917	#ifdef MGf_DUP
853	coro_state_dup,	918	coro_state_dup,
854	#else	919	#else
855	# define MGf_DUP 0	920	# define MGf_DUP 0
…		…
871	/* very slow, but rare, check */	936	/* very slow, but rare, check */
872	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
873	croak ("Coro::State object required");	938	croak ("Coro::State object required");
874	}	939	}
875		940
876	mg = SvMAGIC (coro);	941	mg = CORO_MAGIC (coro);
877	assert (mg->mg_type == PERL_MAGIC_ext);
878	return (struct coro *)mg->mg_ptr;	942	return (struct coro *)mg->mg_ptr;
879	}	943	}
880		944
881	static void	945	static void
882	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	946	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
…		…
906	return old_save;	970	return old_save;
907	}	971	}
908		972
909	/ Coro ******************************************************************/	973	/ Coro ******************************************************************/
910		974
911	#define PRIO_MAX 3
912	#define PRIO_HIGH 1
913	#define PRIO_NORMAL 0
914	#define PRIO_LOW -1
915	#define PRIO_IDLE -3
916	#define PRIO_MIN -4
917
918	/* for Coro.pm */
919	static SV *coro_current;
920	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
921	static int coro_nready;
922
923	static void	975	static void
924	coro_enq (SV *coro_sv)	976	coro_enq (SV *coro_sv)
925	{	977	{
926	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
927	coro_nready++;
928	}	979	}
929		980
930	static SV *	981	static SV *
931	coro_deq (int min_prio)	982	coro_deq (int min_prio)
932	{	983	{
…		…
936	if (min_prio < 0)	987	if (min_prio < 0)
937	min_prio = 0;	988	min_prio = 0;
938		989
939	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	990	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
940	if (AvFILLp (coro_ready [prio]) >= 0)	991	if (AvFILLp (coro_ready [prio]) >= 0)
941	{
942	coro_nready--;
943	return av_shift (coro_ready [prio]);	992	return av_shift (coro_ready [prio]);
944	}
945		993
946	return 0;	994	return 0;
947	}	995	}
948		996
949	static int	997	static int
…		…
957	coro = SvSTATE (coro_sv);	1005	coro = SvSTATE (coro_sv);
958		1006
959	if (coro->flags & CF_READY)	1007	if (coro->flags & CF_READY)
960	return 0;	1008	return 0;
961		1009
962	#if 0 /* this is actually harmless */
963	if (coro->flags & CF_RUNNING)
964	croak ("Coro::ready called on currently running coroutine");
965	#endif
966
967	coro->flags \|= CF_READY;	1010	coro->flags \|= CF_READY;
968		1011
969	LOCK;	1012	LOCK;
970	coro_enq (SvREFCNT_inc (coro_sv));	1013	coro_enq (SvREFCNT_inc (coro_sv));
		1014	++coro_nready;
971	UNLOCK;	1015	UNLOCK;
972		1016
973	return 1;	1017	return 1;
974	}	1018	}
975		1019
976	static int	1020	static int
977	api_is_ready (SV *coro_sv)	1021	api_is_ready (SV *coro_sv)
978	{	1022	{
979	return !!SvSTATE (coro_sv)->flags & CF_READY;	1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);
980	}	1024	}
981		1025
982	static void	1026	static void
983	prepare_schedule (struct transfer_args *ta)	1027	prepare_schedule (struct transfer_args *ta)
984	{	1028	{
985	SV prev, next;	1029	SV prev_sv, next_sv;
986		1030
987	for (;;)	1031	for (;;)
988	{	1032	{
989	LOCK;	1033	LOCK;
990	next = coro_deq (PRIO_MIN);	1034	next_sv = coro_deq (PRIO_MIN);
		1035
		1036	/* nothing to schedule: call the idle handler */
		1037	if (!next_sv)
		1038	{
		1039	dSP;
		1040	UNLOCK;
		1041
		1042	ENTER;
		1043	SAVETMPS;
		1044
		1045	PUSHMARK (SP);
		1046	PUTBACK;
		1047	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1048
		1049	FREETMPS;
		1050	LEAVE;
		1051	continue;
		1052	}
		1053
		1054	ta->next = SvSTATE (next_sv);
		1055
		1056	/* cannot transfer to destroyed coros, skip and look for next */
		1057	if (ta->next->flags & CF_DESTROYED)
		1058	{
		1059	UNLOCK;
		1060	SvREFCNT_dec (next_sv);
		1061	/* coro_nready is already taken care of by destroy */
		1062	continue;
		1063	}
		1064
		1065	--coro_nready;
991	UNLOCK;	1066	UNLOCK;
992
993	if (next)
994	break;	1067	break;
995
996	{
997	dSP;
998
999	ENTER;
1000	SAVETMPS;
1001
1002	PUSHMARK (SP);
1003	PUTBACK;
1004	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1005
1006	FREETMPS;
1007	LEAVE;
1008	}	1068	}
1009	}
1010
1011	prev = SvRV (coro_current);
1012	SvRV_set (coro_current, next);
1013		1069
1014	/* free this only after the transfer */	1070	/* free this only after the transfer */
		1071	prev_sv = SvRV (coro_current);
		1072	SvRV_set (coro_current, next_sv);
		1073	ta->prev = SvSTATE (prev_sv);
		1074
		1075	assert (ta->next->flags & CF_READY);
		1076	ta->next->flags &= ~CF_READY;
		1077
1015	LOCK;	1078	LOCK;
1016	free_coro_mortal ();	1079	free_coro_mortal ();
		1080	coro_mortal = prev_sv;
1017	UNLOCK;	1081	UNLOCK;
1018	coro_mortal = prev;
1019
1020	assert (!SvROK(prev));//D
1021	assert (!SvROK(next));//D
1022
1023	ta->prev = SvSTATE (prev);
1024	ta->next = SvSTATE (next);
1025
1026	assert (ta->next->flags & CF_READY);
1027	ta->next->flags &= ~CF_READY;
1028	}	1082	}
1029		1083
1030	static void	1084	static void
1031	prepare_cede (struct transfer_args *ta)	1085	prepare_cede (struct transfer_args *ta)
1032	{	1086	{
1033	api_ready (coro_current);	1087	api_ready (coro_current);
1034
1035	prepare_schedule (ta);	1088	prepare_schedule (ta);
		1089	}
		1090
		1091	static int
		1092	prepare_cede_notself (struct transfer_args *ta)
		1093	{
		1094	if (coro_nready)
		1095	{
		1096	SV *prev = SvRV (coro_current);
		1097	prepare_schedule (ta);
		1098	api_ready (prev);
		1099	return 1;
		1100	}
		1101	else
		1102	return 0;
1036	}	1103	}
1037		1104
1038	static void	1105	static void
1039	api_schedule (void)	1106	api_schedule (void)
1040	{	1107	{
…		…
1042		1109
1043	prepare_schedule (&ta);	1110	prepare_schedule (&ta);
1044	TRANSFER (ta);	1111	TRANSFER (ta);
1045	}	1112	}
1046		1113
1047	static void	1114	static int
1048	api_cede (void)	1115	api_cede (void)
1049	{	1116	{
1050	struct transfer_args ta;	1117	struct transfer_args ta;
1051		1118
1052	prepare_cede (&ta);	1119	prepare_cede (&ta);
		1120
		1121	if (ta.prev != ta.next)
		1122	{
1053	TRANSFER (ta);	1123	TRANSFER (ta);
		1124	return 1;
		1125	}
		1126	else
		1127	return 0;
		1128	}
		1129
		1130	static int
		1131	api_cede_notself (void)
		1132	{
		1133	struct transfer_args ta;
		1134
		1135	if (prepare_cede_notself (&ta))
		1136	{
		1137	TRANSFER (ta);
		1138	return 1;
		1139	}
		1140	else
		1141	return 0;
1054	}	1142	}
1055		1143
1056	MODULE = Coro::State PACKAGE = Coro::State	1144	MODULE = Coro::State PACKAGE = Coro::State
1057		1145
1058	PROTOTYPES: DISABLE	1146	PROTOTYPES: DISABLE
…		…
1114	_set_stacklevel (...)	1202	_set_stacklevel (...)
1115	ALIAS:	1203	ALIAS:
1116	Coro::State::transfer = 1	1204	Coro::State::transfer = 1
1117	Coro::schedule = 2	1205	Coro::schedule = 2
1118	Coro::cede = 3	1206	Coro::cede = 3
		1207	Coro::cede_notself = 4
1119	CODE:	1208	CODE:
1120	{	1209	{
1121	struct transfer_args ta;	1210	struct transfer_args ta;
1122		1211
1123	switch (ix)	1212	switch (ix)
…		…
1139	break;	1228	break;
1140		1229
1141	case 3:	1230	case 3:
1142	prepare_cede (&ta);	1231	prepare_cede (&ta);
1143	break;	1232	break;
		1233
		1234	case 4:
		1235	if (!prepare_cede_notself (&ta))
		1236	XSRETURN_EMPTY;
		1237
		1238	break;
1144	}	1239	}
1145		1240
		1241	BARRIER;
1146	TRANSFER (ta);	1242	TRANSFER (ta);
1147	}
1148		1243
1149	void	1244	if (GIMME_V != G_VOID && ta.next != ta.prev)
1150	_clone_state_from (SV dst, SV src)	1245	XSRETURN_YES;
		1246	}
		1247
		1248	bool
		1249	_destroy (SV *coro_sv)
1151	CODE:	1250	CODE:
1152	{	1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1153	struct coro *coro_src = SvSTATE (src);	1252	OUTPUT:
1154		1253	RETVAL
1155	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1156
1157	++coro_src->refcnt;
1158	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1159	}
1160		1254
1161	void	1255	void
1162	_exit (code)	1256	_exit (code)
1163	int code	1257	int code
1164	PROTOTYPE: $	1258	PROTOTYPE: $
…		…
1201	coro_ready[i] = newAV ();	1295	coro_ready[i] = newAV ();
1202		1296
1203	{	1297	{
1204	SV *sv = perl_get_sv("Coro::API", 1);	1298	SV *sv = perl_get_sv("Coro::API", 1);
1205		1299
1206	coroapi.schedule = api_schedule;	1300	coroapi.schedule = api_schedule;
1207	coroapi.save = api_save;	1301	coroapi.save = api_save;
1208	coroapi.cede = api_cede;	1302	coroapi.cede = api_cede;
		1303	coroapi.cede_notself = api_cede_notself;
1209	coroapi.ready = api_ready;	1304	coroapi.ready = api_ready;
1210	coroapi.is_ready = api_is_ready;	1305	coroapi.is_ready = api_is_ready;
1211	coroapi.nready = &coro_nready;	1306	coroapi.nready = &coro_nready;
1212	coroapi.current = coro_current;	1307	coroapi.current = coro_current;
1213		1308
1214	GCoroAPI = &coroapi;	1309	GCoroAPI = &coroapi;
1215	sv_setiv (sv, (IV)&coroapi);	1310	sv_setiv (sv, (IV)&coroapi);
1216	SvREADONLY_on (sv);	1311	SvREADONLY_on (sv);
1217	}	1312	}
…		…
1233	RETVAL = coro->prio;	1328	RETVAL = coro->prio;
1234		1329
1235	if (items > 1)	1330	if (items > 1)
1236	{	1331	{
1237	if (ix)	1332	if (ix)
1238	newprio += coro->prio;	1333	newprio = coro->prio - newprio;
1239		1334
1240	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1335	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1241	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1336	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1242		1337
1243	coro->prio = newprio;	1338	coro->prio = newprio;
1244	}	1339	}
1245	}	1340	}
		1341	OUTPUT:
		1342	RETVAL
1246		1343
1247	SV *	1344	SV *
1248	ready (SV *self)	1345	ready (SV *self)
1249	PROTOTYPE: $	1346	PROTOTYPE: $
1250	CODE:	1347	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC vs. Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.127 by root, Tue Dec 12 13:56:45 2006 UTC vs.
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC