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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC vs.
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC

…		…
4	#include "perl.h"	4	#include "perl.h"
5	#include "XSUB.h"	5	#include "XSUB.h"
6		6
7	#include "patchlevel.h"	7	#include "patchlevel.h"
8		8
9	#if USE_VALGRIND
10	# include <valgrind/valgrind.h>
11	#endif
12
13	/* the maximum number of idle cctx that will be pooled */
14	#define MAX_IDLE_CCTX 8
15
16	#define PERL_VERSION_ATLEAST(a,b,c) \
17	(PERL_REVISION > (a) \
18	\|\| (PERL_REVISION == (a) \
19	&& (PERL_VERSION > (b) \
20	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
21
22	#if !PERL_VERSION_ATLEAST (5,6,0)
23	# ifndef PL_ppaddr
24	# define PL_ppaddr ppaddr
25	# endif
26	# ifndef call_sv
27	# define call_sv perl_call_sv
28	# endif
29	# ifndef get_sv
30	# define get_sv perl_get_sv
31	# endif
32	# ifndef get_cv
33	# define get_cv perl_get_cv
34	# endif
35	# ifndef IS_PADGV
36	# define IS_PADGV(v) 0
37	# endif
38	# ifndef IS_PADCONST
39	# define IS_PADCONST(v) 0
40	# endif
41	#endif
42
43	#include <stdio.h>	9	#include <stdio.h>
44	#include <errno.h>	10	#include <errno.h>
45		11	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		12
54	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
55	# include <unistd.h>	14	# include <unistd.h>
56	# include <sys/mman.h>	15	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
72	#else	31	#else
73	# define PAGESIZE 0	32	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
75	#endif	34	#endif
76		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
		50	# ifndef PL_ppaddr
		51	# define PL_ppaddr ppaddr
		52	# endif
		53	# ifndef call_sv
		54	# define call_sv perl_call_sv
		55	# endif
		56	# ifndef get_sv
		57	# define get_sv perl_get_sv
		58	# endif
		59	# ifndef get_cv
		60	# define get_cv perl_get_cv
		61	# endif
		62	# ifndef IS_PADGV
		63	# define IS_PADGV(v) 0
		64	# endif
		65	# ifndef IS_PADCONST
		66	# define IS_PADCONST(v) 0
		67	# endif
		68	#endif
		69
		70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
		74
		75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
		87
77	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
78	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
79	* and should be unique. */	90	* and should be unique. */
80	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
82		93
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		95
85	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	99	#else
88	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
89	#endif	102	#endif
90		103
91	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
92		105
93	#include "CoroAPI.h"	106	#include "CoroAPI.h"
…		…
99	#else	112	#else
100	# define LOCK (void)0	113	# define LOCK (void)0
101	# define UNLOCK (void)0	114	# define UNLOCK (void)0
102	#endif	115	#endif
103		116
		117	/* helper storage struct for Coro::AIO */
104	struct io_state	118	struct io_state
105	{	119	{
106	int errorno;	120	int errorno;
107	I32 laststype;	121	I32 laststype;
108	int laststatval;	122	int laststatval;
…		…
124	/* the stack */	138	/* the stack */
125	void *sptr;	139	void *sptr;
126	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
127		141
128	/* cpu state */	142	/* cpu state */
129	void idle_sp; / sp of top-level transfer/schedule/cede call */	143	void idle_sp; / sp of top-level transfer/schedule/cede call */
		144	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
130	JMPENV *top_env;	145	JMPENV *top_env;
131	coro_context cctx;	146	coro_context cctx;
132		147
133	int inuse;	148	int inuse;
134		149
…		…
136	int valgrind_id;	151	int valgrind_id;
137	#endif	152	#endif
138	} coro_cctx;	153	} coro_cctx;
139		154
140	enum {	155	enum {
141	CF_RUNNING = 0x0001, /* coroutine is running */	156	CF_RUNNING = 0x0001, /* coroutine is running */
142	CF_READY = 0x0002, /* coroutine is ready */	157	CF_READY = 0x0002, /* coroutine is ready */
143	CF_NEW = 0x0004, /* ahs never been switched to */	158	CF_NEW = 0x0004, /* has never been switched to */
		159	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
144	};	160	};
145		161
146	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
147	struct coro {	163	struct coro {
148	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
…		…
157	/* optionally saved, might be zero */	173	/* optionally saved, might be zero */
158	AV defav; / @_ */	174	AV defav; / @_ */
159	SV defsv; / $_ */	175	SV defsv; / $_ */
160	SV errsv; / $@ */	176	SV errsv; / $@ */
161	SV irssv; / $/ */	177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
162		179
163	#define VAR(name,type) type name;	180	#define VAR(name,type) type name;
164	# include "state.h"	181	# include "state.h"
165	#undef VAR	182	#undef VAR
166		183
…		…
252		269
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	270	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	271	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	272	else
256	{	273	{
257	#if 0	274	#if PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	275	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	276	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	277	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	278	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	279	SvREFCNT_dec (cp);
…		…
301	#undef VAR	318	#undef VAR
302		319
303	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	320	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
304	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	321	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
305	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	322	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
306	if (c->irssv) REPLACE_SV (PL_rs , c->irssv);	323	if (c->irssv)
		324	{
		325	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		326	SvREFCNT_dec (c->irssv);
		327	else
		328	{
		329	REPLACE_SV (PL_rs, c->irssv);
		330	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		331	sv_setsv (c->irssv_sv, PL_rs);
		332	}
		333	}
307		334
308	{	335	{
309	dSP;	336	dSP;
310	CV *cv;	337	CV *cv;
311		338
…		…
333	/*	360	/*
334	* the worst thing you can imagine happens first - we have to save	361	* the worst thing you can imagine happens first - we have to save
335	* (and reinitialize) all cv's in the whole callchain :(	362	* (and reinitialize) all cv's in the whole callchain :(
336	*/	363	*/
337		364
		365	EXTEND (SP, 3 + 1);
338	PUSHs (Nullsv);	366	PUSHs (Nullsv);
339	/* this loop was inspired by pp_caller */	367	/* this loop was inspired by pp_caller */
340	for (;;)	368	for (;;)
341	{	369	{
342	while (cxix >= 0)	370	while (cxix >= 0)
…		…
348	CV *cv = cx->blk_sub.cv;	376	CV *cv = cx->blk_sub.cv;
349		377
350	if (CvDEPTH (cv))	378	if (CvDEPTH (cv))
351	{	379	{
352	EXTEND (SP, 3);	380	EXTEND (SP, 3);
353
354	PUSHs ((SV *)CvPADLIST (cv));	381	PUSHs ((SV *)CvPADLIST (cv));
355	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	382	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
356	PUSHs ((SV *)cv);	383	PUSHs ((SV *)cv);
357		384
358	CvDEPTH (cv) = 0;	385	CvDEPTH (cv) = 0;
359	get_padlist (cv);	386	get_padlist (cv);
360	}	387	}
361	}	388	}
362	#ifdef CXt_FORMAT
363	else if (CxTYPE (cx) == CXt_FORMAT)
364	{
365	/* I never used formats, so how should I know how these are implemented? */
366	/* my bold guess is as a simple, plain sub... */
367	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
368	}
369	#endif
370	}	389	}
371		390
372	if (top_si->si_type == PERLSI_MAIN)	391	if (top_si->si_type == PERLSI_MAIN)
373	break;	392	break;
374		393
…		…
394	* allocate various perl stacks. This is an exact copy	413	* allocate various perl stacks. This is an exact copy
395	* of perl.c:init_stacks, except that it uses less memory	414	* of perl.c:init_stacks, except that it uses less memory
396	* on the (sometimes correct) assumption that coroutines do	415	* on the (sometimes correct) assumption that coroutines do
397	* not usually need a lot of stackspace.	416	* not usually need a lot of stackspace.
398	*/	417	*/
		418	#if PREFER_PERL_FUNCTIONS
		419	# define coro_init_stacks init_stacks
		420	#else
399	static void	421	static void
400	coro_init_stacks ()	422	coro_init_stacks ()
401	{	423	{
402	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	424	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
403	PL_curstackinfo->si_type = PERLSI_MAIN;	425	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
433	New(54,PL_retstack,16,OP*);	455	New(54,PL_retstack,16,OP*);
434	PL_retstack_ix = 0;	456	PL_retstack_ix = 0;
435	PL_retstack_max = 16;	457	PL_retstack_max = 16;
436	#endif	458	#endif
437	}	459	}
		460	#endif
438		461
439	/*	462	/*
440	* destroy the stacks, the callchain etc...	463	* destroy the stacks, the callchain etc...
441	*/	464	*/
442	static void	465	static void
443	coro_destroy_stacks ()	466	coro_destroy_stacks ()
444	{	467	{
445	if (!IN_DESTRUCT)	468	if (!IN_DESTRUCT)
446	{	469	{
447	/* is this ugly, I ask? */	470	/* restore all saved variables and stuff */
448	LEAVE_SCOPE (0);	471	LEAVE_SCOPE (0);
		472	assert (PL_tmps_floor == -1);
449		473
450	/* sure it is, but more important: is it correct?? :/ */	474	/* free all temporaries */
451	FREETMPS;	475	FREETMPS;
		476	assert (PL_tmps_ix == -1);
452		477
		478	/* unwind all extra stacks */
453	/POPSTACK_TO (PL_mainstack);//D//use/	479	POPSTACK_TO (PL_mainstack);
		480
		481	/* unwind main stack */
		482	dounwind (-1);
454	}	483	}
455		484
456	while (PL_curstackinfo->si_next)	485	while (PL_curstackinfo->si_next)
457	PL_curstackinfo = PL_curstackinfo->si_next;	486	PL_curstackinfo = PL_curstackinfo->si_next;
458		487
459	while (PL_curstackinfo)	488	while (PL_curstackinfo)
460	{	489	{
461	PERL_SI *p = PL_curstackinfo->si_prev;	490	PERL_SI *p = PL_curstackinfo->si_prev;
462		491
463	{ /D//remove/
464	dSP;
465	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
466	PUTBACK; /* possibly superfluous */
467	}
468
469	if (!IN_DESTRUCT)	492	if (!IN_DESTRUCT)
470	{
471	dounwind (-1);/D//remove/
472	SvREFCNT_dec (PL_curstackinfo->si_stack);	493	SvREFCNT_dec (PL_curstackinfo->si_stack);
473	}
474		494
475	Safefree (PL_curstackinfo->si_cxstack);	495	Safefree (PL_curstackinfo->si_cxstack);
476	Safefree (PL_curstackinfo);	496	Safefree (PL_curstackinfo);
477	PL_curstackinfo = p;	497	PL_curstackinfo = p;
478	}	498	}
…		…
582	{	602	{
583	coro_cctx *cctx;	603	coro_cctx *cctx;
584		604
585	++cctx_count;	605	++cctx_count;
586		606
587	New (0, cctx, 1, coro_cctx);	607	Newz (0, cctx, 1, coro_cctx);
588		608
589	#if HAVE_MMAP	609	#if HAVE_MMAP
590		610
591	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	611	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
592	/* mmap supposedly does allocate-on-write for us */	612	/* mmap supposedly does allocate-on-write for us */
…		…
693	{	713	{
694	dSTACKLEVEL;	714	dSTACKLEVEL;
695		715
696	/* sometimes transfer is only called to set idle_sp */	716	/* sometimes transfer is only called to set idle_sp */
697	if (!next)	717	if (!next)
		718	{
698	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	719	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		720	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		721	}
699	else if (prev != next)	722	else if (prev != next)
700	{	723	{
701	coro_cctx *prev__cctx;	724	coro_cctx *prev__cctx;
702		725
703	if (prev->flags & CF_NEW)	726	if (prev->flags & CF_NEW)
…		…
713	if (!prev->flags & CF_RUNNING)	736	if (!prev->flags & CF_RUNNING)
714	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	737	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
715		738
716	if (next->flags & CF_RUNNING)	739	if (next->flags & CF_RUNNING)
717	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	740	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		741
		742	if (next->flags & CF_DESTROYED)
		743	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
718		744
719	prev->flags &= ~CF_RUNNING;	745	prev->flags &= ~CF_RUNNING;
720	next->flags \|= CF_RUNNING;	746	next->flags \|= CF_RUNNING;
721		747
722	LOCK;	748	LOCK;
…		…
728	/* first get rid of the old state */	754	/* first get rid of the old state */
729	save_perl (prev);	755	save_perl (prev);
730	/* setup coroutine call */	756	/* setup coroutine call */
731	setup_coro (next);	757	setup_coro (next);
732	/* need a new stack */	758	/* need a new stack */
733	assert (!next->stack);	759	assert (!next->cctx);
734	}	760	}
735	else	761	else
736	{	762	{
737	/* coroutine already started */	763	/* coroutine already started */
738	save_perl (prev);	764	save_perl (prev);
…		…
743		769
744	/* possibly "free" the cctx */	770	/* possibly "free" the cctx */
745	if (prev__cctx->idle_sp == STACKLEVEL)	771	if (prev__cctx->idle_sp == STACKLEVEL)
746	{	772	{
747	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	773	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
748	assert (PL_top_env == prev__cctx->top_env);	774	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
749		775
750	prev->cctx = 0;	776	prev->cctx = 0;
751		777
752	cctx_put (prev__cctx);	778	cctx_put (prev__cctx);
753	prev__cctx->inuse = 0;	779	prev__cctx->inuse = 0;
…		…
766	PL_top_env = next->cctx->top_env;	792	PL_top_env = next->cctx->top_env;
767	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	793	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
768	}	794	}
769		795
770	free_coro_mortal ();	796	free_coro_mortal ();
771
772	UNLOCK;	797	UNLOCK;
773	}	798	}
774	}	799	}
775		800
776	struct transfer_args	801	struct transfer_args
…		…
778	struct coro prev, next;	803	struct coro prev, next;
779	};	804	};
780		805
781	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	806	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
782		807
783	static void	808	static int
784	coro_state_destroy (struct coro *coro)	809	coro_state_destroy (struct coro *coro)
785	{	810	{
786	if (coro->refcnt--)	811	if (coro->flags & CF_DESTROYED)
787	return;	812	return 0;
		813
		814	coro->flags \|= CF_DESTROYED;
788		815
789	if (coro->mainstack && coro->mainstack != main_mainstack)	816	if (coro->mainstack && coro->mainstack != main_mainstack)
790	{	817	{
		818	assert (!(coro->flags & CF_RUNNING));
		819
791	struct coro temp;	820	struct coro temp;
792	Zero (&temp, 1, struct coro);	821	Zero (&temp, 1, struct coro);
793	temp.save = CORO_SAVE_ALL;	822	temp.save = CORO_SAVE_ALL;
794		823
795	if (coro->flags & CF_RUNNING)	824	if (coro->flags & CF_RUNNING)
…		…
805	coro->mainstack = 0;	834	coro->mainstack = 0;
806	}	835	}
807		836
808	cctx_destroy (coro->cctx);	837	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	838	SvREFCNT_dec (coro->args);
810	Safefree (coro);	839
		840	return 1;
811	}	841	}
812		842
813	static int	843	static int
814	coro_state_clear (pTHX_ SV sv, MAGIC mg)	844	coro_state_free (pTHX_ SV sv, MAGIC mg)
815	{	845	{
816	struct coro coro = (struct coro )mg->mg_ptr;	846	struct coro coro = (struct coro )mg->mg_ptr;
817	mg->mg_ptr = 0;	847	mg->mg_ptr = 0;
818		848
		849	if (--coro->refcnt < 0)
		850	{
819	coro_state_destroy (coro);	851	coro_state_destroy (coro);
		852	Safefree (coro);
		853	}
820		854
821	return 0;	855	return 0;
822	}	856	}
823		857
824	static int	858	static int
…		…
831	return 0;	865	return 0;
832	}	866	}
833		867
834	static MGVTBL coro_state_vtbl = {	868	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	869	0, 0, 0, 0,
836	coro_state_clear,	870	coro_state_free,
837	0,	871	0,
838	#ifdef MGf_DUP	872	#ifdef MGf_DUP
839	coro_state_dup,	873	coro_state_dup,
840	#else	874	#else
841	# define MGf_DUP 0	875	# define MGf_DUP 0
…		…
943	coro = SvSTATE (coro_sv);	977	coro = SvSTATE (coro_sv);
944		978
945	if (coro->flags & CF_READY)	979	if (coro->flags & CF_READY)
946	return 0;	980	return 0;
947		981
948	#if 0 /* this is actually harmless */
949	if (coro->flags & CF_RUNNING)
950	croak ("Coro::ready called on currently running coroutine");
951	#endif
952
953	coro->flags \|= CF_READY;	982	coro->flags \|= CF_READY;
954		983
955	LOCK;	984	LOCK;
956	coro_enq (SvREFCNT_inc (coro_sv));	985	coro_enq (SvREFCNT_inc (coro_sv));
957	UNLOCK;	986	UNLOCK;
…		…
960	}	989	}
961		990
962	static int	991	static int
963	api_is_ready (SV *coro_sv)	992	api_is_ready (SV *coro_sv)
964	{	993	{
965	return !!SvSTATE (coro_sv)->flags & CF_READY;	994	return !!(SvSTATE (coro_sv)->flags & CF_READY);
966	}	995	}
967		996
968	static void	997	static void
969	prepare_schedule (struct transfer_args *ta)	998	prepare_schedule (struct transfer_args *ta)
970	{	999	{
971	SV prev, next;	1000	SV prev_sv, next_sv;
972		1001
973	for (;;)	1002	for (;;)
974	{	1003	{
975	LOCK;	1004	LOCK;
976	next = coro_deq (PRIO_MIN);	1005	next_sv = coro_deq (PRIO_MIN);
977	UNLOCK;	1006	UNLOCK;
978		1007
		1008	/* nothing to schedule: call the idle handler */
979	if (next)	1009	if (!next_sv)
980	break;
981
982	{	1010	{
983	dSP;	1011	dSP;
984		1012
985	ENTER;	1013	ENTER;
986	SAVETMPS;	1014	SAVETMPS;
987		1015
988	PUSHMARK (SP);	1016	PUSHMARK (SP);
989	PUTBACK;	1017	PUTBACK;
990	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1018	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
991		1019
992	FREETMPS;	1020	FREETMPS;
993	LEAVE;	1021	LEAVE;
		1022	continue;
994	}	1023	}
995	}
996		1024
997	prev = SvRV (coro_current);	1025	ta->next = SvSTATE (next_sv);
998	SvRV_set (coro_current, next);	1026
		1027	/* cannot transfer to destroyed coros, skip and look for next */
		1028	if (ta->next->flags & CF_DESTROYED)
		1029	{
		1030	SvREFCNT_dec (next_sv);
		1031	continue;
		1032	}
		1033
		1034	break;
		1035	}
999		1036
1000	/* free this only after the transfer */	1037	/* free this only after the transfer */
		1038	prev_sv = SvRV (coro_current);
		1039	SvRV_set (coro_current, next_sv);
		1040	ta->prev = SvSTATE (prev_sv);
		1041
		1042	assert (ta->next->flags & CF_READY);
		1043	ta->next->flags &= ~CF_READY;
		1044
1001	LOCK;	1045	LOCK;
1002	free_coro_mortal ();	1046	free_coro_mortal ();
		1047	coro_mortal = prev_sv;
1003	UNLOCK;	1048	UNLOCK;
1004	coro_mortal = prev;
1005
1006	assert (!SvROK(prev));//D
1007	assert (!SvROK(next));//D
1008
1009	ta->prev = SvSTATE (prev);
1010	ta->next = SvSTATE (next);
1011
1012	assert (ta->next->flags & CF_READY);
1013	ta->next->flags &= ~CF_READY;
1014	}	1049	}
1015		1050
1016	static void	1051	static void
1017	prepare_cede (struct transfer_args *ta)	1052	prepare_cede (struct transfer_args *ta)
1018	{	1053	{
1019	api_ready (coro_current);	1054	api_ready (coro_current);
1020
1021	prepare_schedule (ta);	1055	prepare_schedule (ta);
		1056	}
		1057
		1058	static int
		1059	prepare_cede_notself (struct transfer_args *ta)
		1060	{
		1061	if (coro_nready)
		1062	{
		1063	SV *prev = SvRV (coro_current);
		1064	prepare_schedule (ta);
		1065	api_ready (prev);
		1066	return 1;
		1067	}
		1068	else
		1069	return 0;
1022	}	1070	}
1023		1071
1024	static void	1072	static void
1025	api_schedule (void)	1073	api_schedule (void)
1026	{	1074	{
…		…
1028		1076
1029	prepare_schedule (&ta);	1077	prepare_schedule (&ta);
1030	TRANSFER (ta);	1078	TRANSFER (ta);
1031	}	1079	}
1032		1080
1033	static void	1081	static int
1034	api_cede (void)	1082	api_cede (void)
1035	{	1083	{
1036	struct transfer_args ta;	1084	struct transfer_args ta;
1037		1085
1038	prepare_cede (&ta);	1086	prepare_cede (&ta);
		1087
		1088	if (ta.prev != ta.next)
		1089	{
1039	TRANSFER (ta);	1090	TRANSFER (ta);
		1091	return 1;
		1092	}
		1093	else
		1094	return 0;
		1095	}
		1096
		1097	static int
		1098	api_cede_notself (void)
		1099	{
		1100	struct transfer_args ta;
		1101
		1102	if (prepare_cede_notself (&ta))
		1103	{
		1104	TRANSFER (ta);
		1105	return 1;
		1106	}
		1107	else
		1108	return 0;
1040	}	1109	}
1041		1110
1042	MODULE = Coro::State PACKAGE = Coro::State	1111	MODULE = Coro::State PACKAGE = Coro::State
1043		1112
1044	PROTOTYPES: DISABLE	1113	PROTOTYPES: DISABLE
…		…
1100	_set_stacklevel (...)	1169	_set_stacklevel (...)
1101	ALIAS:	1170	ALIAS:
1102	Coro::State::transfer = 1	1171	Coro::State::transfer = 1
1103	Coro::schedule = 2	1172	Coro::schedule = 2
1104	Coro::cede = 3	1173	Coro::cede = 3
		1174	Coro::cede_notself = 4
1105	CODE:	1175	CODE:
1106	{	1176	{
1107	struct transfer_args ta;	1177	struct transfer_args ta;
1108		1178
1109	switch (ix)	1179	switch (ix)
…		…
1125	break;	1195	break;
1126		1196
1127	case 3:	1197	case 3:
1128	prepare_cede (&ta);	1198	prepare_cede (&ta);
1129	break;	1199	break;
		1200
		1201	case 4:
		1202	if (!prepare_cede_notself (&ta))
		1203	XSRETURN_EMPTY;
		1204
		1205	break;
1130	}	1206	}
1131		1207
		1208	BARRIER;
1132	TRANSFER (ta);	1209	TRANSFER (ta);
1133	}
1134		1210
1135	void	1211	if (GIMME_V != G_VOID && ta.next != ta.prev)
1136	_clone_state_from (SV dst, SV src)	1212	XSRETURN_YES;
		1213	}
		1214
		1215	bool
		1216	_destroy (SV *coro_sv)
1137	CODE:	1217	CODE:
1138	{	1218	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1139	struct coro *coro_src = SvSTATE (src);	1219	OUTPUT:
1140		1220	RETVAL
1141	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1142
1143	++coro_src->refcnt;
1144	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1145	}
1146		1221
1147	void	1222	void
1148	_exit (code)	1223	_exit (code)
1149	int code	1224	int code
1150	PROTOTYPE: $	1225	PROTOTYPE: $
…		…
1187	coro_ready[i] = newAV ();	1262	coro_ready[i] = newAV ();
1188		1263
1189	{	1264	{
1190	SV *sv = perl_get_sv("Coro::API", 1);	1265	SV *sv = perl_get_sv("Coro::API", 1);
1191		1266
1192	coroapi.schedule = api_schedule;	1267	coroapi.schedule = api_schedule;
1193	coroapi.save = api_save;	1268	coroapi.save = api_save;
1194	coroapi.cede = api_cede;	1269	coroapi.cede = api_cede;
		1270	coroapi.cede_notself = api_cede_notself;
1195	coroapi.ready = api_ready;	1271	coroapi.ready = api_ready;
1196	coroapi.is_ready = api_is_ready;	1272	coroapi.is_ready = api_is_ready;
1197	coroapi.nready = &coro_nready;	1273	coroapi.nready = &coro_nready;
1198	coroapi.current = coro_current;	1274	coroapi.current = coro_current;
1199		1275
1200	GCoroAPI = &coroapi;	1276	GCoroAPI = &coroapi;
1201	sv_setiv (sv, (IV)&coroapi);	1277	sv_setiv (sv, (IV)&coroapi);
1202	SvREADONLY_on (sv);	1278	SvREADONLY_on (sv);
1203	}	1279	}
…		…
1219	RETVAL = coro->prio;	1295	RETVAL = coro->prio;
1220		1296
1221	if (items > 1)	1297	if (items > 1)
1222	{	1298	{
1223	if (ix)	1299	if (ix)
1224	newprio += coro->prio;	1300	newprio = coro->prio - newprio;
1225		1301
1226	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1302	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1227	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1303	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1228		1304
1229	coro->prio = newprio;	1305	coro->prio = newprio;
1230	}	1306	}
1231	}	1307	}
		1308	OUTPUT:
		1309	RETVAL
1232		1310
1233	SV *	1311	SV *
1234	ready (SV *self)	1312	ready (SV *self)
1235	PROTOTYPE: $	1313	PROTOTYPE: $
1236	CODE:	1314	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC vs. Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.122 by root, Mon Dec 4 13:47:56 2006 UTC vs.
Revision 1.136 by root, Fri Jan 12 01:05:55 2007 UTC