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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 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"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		107
97	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
…		…
126	/* the stack */	137	/* the stack */
127	void *sptr;	138	void *sptr;
128	long ssize; /* positive == mmap, otherwise malloc */	139	long ssize; /* positive == mmap, otherwise malloc */
129		140
130	/* cpu state */	141	/* cpu state */
131	void idle_sp; / sp of top-level transfer/schedule/cede call */	142	void idle_sp; / sp of top-level transfer/schedule/cede call */
		143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
132	JMPENV *top_env;	144	JMPENV *top_env;
133	coro_context cctx;	145	coro_context cctx;
134		146
135	int inuse;	147	int inuse;
136		148
…		…
151	coro_cctx *cctx;	163	coro_cctx *cctx;
152		164
153	/* data associated with this coroutine (initial args) */	165	/* data associated with this coroutine (initial args) */
154	AV *args;	166	AV *args;
155	int refcnt;	167	int refcnt;
156	int flags;	168	int save; /* CORO_SAVE flags */
		169	int flags; /* CF_ flags */
157		170
158	/* optionally saved, might be zero */	171	/* optionally saved, might be zero */
159	AV *defav;	172	AV defav; / @_ */
160	SV *defsv;	173	SV defsv; / $_ */
161	SV *errsv;	174	SV errsv; / $@ */
		175	SV irssv; / $/ */
		176	SV irssv_sv; / real $/ cache */
162		177
163	#define VAR(name,type) type name;	178	#define VAR(name,type) type name;
164	# include "state.h"	179	# include "state.h"
165	#undef VAR	180	#undef VAR
166		181
…		…
252		267
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	270	else
256	{	271	{
257	#if 0	272	#if PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	273	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	274	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	275	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	276	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	277	SvREFCNT_dec (cp);
…		…
289	}	304	}
290		305
291	#define SB do {	306	#define SB do {
292	#define SE } while (0)	307	#define SE } while (0)
293		308
294	#define LOAD(state) load_state ((state))
295	#define SAVE(state,flags) save_state ((state),(flags))
296
297	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
298		310
299	static void	311	static void
300	load_state (Coro__State c)	312	load_perl (Coro__State c)
301	{	313	{
302	#define VAR(name,type) PL_ ## name = c->name;	314	#define VAR(name,type) PL_ ## name = c->name;
303	# include "state.h"	315	# include "state.h"
304	#undef VAR	316	#undef VAR
305		317
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		321	if (c->irssv)
		322	{
		323	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		324	SvREFCNT_dec (c->irssv);
		325	else
		326	{
		327	REPLACE_SV (PL_rs, c->irssv);
		328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		329	sv_setsv (c->irssv_sv, PL_rs);
		330	}
		331	}
309		332
310	{	333	{
311	dSP;	334	dSP;
312	CV *cv;	335	CV *cv;
313		336
…		…
322	PUTBACK;	345	PUTBACK;
323	}	346	}
324	}	347	}
325		348
326	static void	349	static void
327	save_state (Coro__State c, int flags)	350	save_perl (Coro__State c)
328	{	351	{
329	{	352	{
330	dSP;	353	dSP;
331	I32 cxix = cxstack_ix;	354	I32 cxix = cxstack_ix;
332	PERL_CONTEXT *ccstk = cxstack;	355	PERL_CONTEXT *ccstk = cxstack;
…		…
335	/*	358	/*
336	* the worst thing you can imagine happens first - we have to save	359	* the worst thing you can imagine happens first - we have to save
337	* (and reinitialize) all cv's in the whole callchain :(	360	* (and reinitialize) all cv's in the whole callchain :(
338	*/	361	*/
339		362
		363	EXTEND (SP, 3 + 1);
340	PUSHs (Nullsv);	364	PUSHs (Nullsv);
341	/* this loop was inspired by pp_caller */	365	/* this loop was inspired by pp_caller */
342	for (;;)	366	for (;;)
343	{	367	{
344	while (cxix >= 0)	368	while (cxix >= 0)
…		…
350	CV *cv = cx->blk_sub.cv;	374	CV *cv = cx->blk_sub.cv;
351		375
352	if (CvDEPTH (cv))	376	if (CvDEPTH (cv))
353	{	377	{
354	EXTEND (SP, 3);	378	EXTEND (SP, 3);
355
356	PUSHs ((SV *)CvPADLIST (cv));	379	PUSHs ((SV *)CvPADLIST (cv));
357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
358	PUSHs ((SV *)cv);	381	PUSHs ((SV *)cv);
359		382
360	CvDEPTH (cv) = 0;	383	CvDEPTH (cv) = 0;
361	get_padlist (cv);	384	get_padlist (cv);
362	}	385	}
363	}	386	}
364	#ifdef CXt_FORMAT
365	else if (CxTYPE (cx) == CXt_FORMAT)
366	{
367	/* I never used formats, so how should I know how these are implemented? */
368	/* my bold guess is as a simple, plain sub... */
369	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
370	}
371	#endif
372	}	387	}
373		388
374	if (top_si->si_type == PERLSI_MAIN)	389	if (top_si->si_type == PERLSI_MAIN)
375	break;	390	break;
376		391
…		…
380	}	395	}
381		396
382	PUTBACK;	397	PUTBACK;
383	}	398	}
384		399
385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
388		404
389	#define VAR(name,type)c->name = PL_ ## name;	405	#define VAR(name,type)c->name = PL_ ## name;
390	# include "state.h"	406	# include "state.h"
391	#undef VAR	407	#undef VAR
392	}	408	}
…		…
395	* allocate various perl stacks. This is an exact copy	411	* allocate various perl stacks. This is an exact copy
396	* of perl.c:init_stacks, except that it uses less memory	412	* of perl.c:init_stacks, except that it uses less memory
397	* on the (sometimes correct) assumption that coroutines do	413	* on the (sometimes correct) assumption that coroutines do
398	* not usually need a lot of stackspace.	414	* not usually need a lot of stackspace.
399	*/	415	*/
		416	#if PREFER_PERL_FUNCTIONS
		417	# define coro_init_stacks init_stacks
		418	#else
400	static void	419	static void
401	coro_init_stacks ()	420	coro_init_stacks ()
402	{	421	{
403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
404	PL_curstackinfo->si_type = PERLSI_MAIN;	423	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
434	New(54,PL_retstack,16,OP*);	453	New(54,PL_retstack,16,OP*);
435	PL_retstack_ix = 0;	454	PL_retstack_ix = 0;
436	PL_retstack_max = 16;	455	PL_retstack_max = 16;
437	#endif	456	#endif
438	}	457	}
		458	#endif
439		459
440	/*	460	/*
441	* destroy the stacks, the callchain etc...	461	* destroy the stacks, the callchain etc...
442	*/	462	*/
443	static void	463	static void
444	coro_destroy_stacks ()	464	coro_destroy_stacks ()
445	{	465	{
446	if (!IN_DESTRUCT)	466	if (!IN_DESTRUCT)
447	{	467	{
448	/* is this ugly, I ask? */	468	/* restore all saved variables and stuff */
449	LEAVE_SCOPE (0);	469	LEAVE_SCOPE (0);
		470	assert (PL_tmps_floor == -1);
450		471
451	/* sure it is, but more important: is it correct?? :/ */	472	/* free all temporaries */
452	FREETMPS;	473	FREETMPS;
		474	assert (PL_tmps_ix == -1);
453		475
454	/POPSTACK_TO (PL_mainstack);//D//use/	476	POPSTACK_TO (PL_mainstack);
455	}	477	}
456		478
457	while (PL_curstackinfo->si_next)	479	while (PL_curstackinfo->si_next)
458	PL_curstackinfo = PL_curstackinfo->si_next;	480	PL_curstackinfo = PL_curstackinfo->si_next;
459		481
460	while (PL_curstackinfo)	482	while (PL_curstackinfo)
461	{	483	{
462	PERL_SI *p = PL_curstackinfo->si_prev;	484	PERL_SI *p = PL_curstackinfo->si_prev;
463		485
464	{ /D//remove/
465	dSP;
466	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
467	PUTBACK; /* possibly superfluous */
468	}
469
470	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
471	{
472	dounwind (-1);/D//remove/
473	SvREFCNT_dec (PL_curstackinfo->si_stack);	487	SvREFCNT_dec (PL_curstackinfo->si_stack);
474	}
475		488
476	Safefree (PL_curstackinfo->si_cxstack);	489	Safefree (PL_curstackinfo->si_cxstack);
477	Safefree (PL_curstackinfo);	490	Safefree (PL_curstackinfo);
478	PL_curstackinfo = p;	491	PL_curstackinfo = p;
479	}	492	}
…		…
583	{	596	{
584	coro_cctx *cctx;	597	coro_cctx *cctx;
585		598
586	++cctx_count;	599	++cctx_count;
587		600
588	New (0, cctx, 1, coro_cctx);	601	Newz (0, cctx, 1, coro_cctx);
589		602
590	#if HAVE_MMAP	603	#if HAVE_MMAP
591		604
592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
593	/* mmap supposedly does allocate-on-write for us */	606	/* mmap supposedly does allocate-on-write for us */
…		…
688	cctx_first = cctx;	701	cctx_first = cctx;
689	}	702	}
690		703
691	/* never call directly, always through the coro_state_transfer global variable */	704	/* never call directly, always through the coro_state_transfer global variable */
692	static void NOINLINE	705	static void NOINLINE
693	transfer (struct coro prev, struct coro next, int flags)	706	transfer (struct coro prev, struct coro next)
694	{	707	{
695	dSTACKLEVEL;	708	dSTACKLEVEL;
696		709
697	/* sometimes transfer is only called to set idle_sp */	710	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	711	if (!next)
		712	{
699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	713	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		714	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		715	}
700	else if (prev != next)	716	else if (prev != next)
701	{	717	{
702	coro_cctx *prev__cctx;	718	coro_cctx *prev__cctx;
703		719
704	if (prev->flags & CF_NEW)	720	if (prev->flags & CF_NEW)
…		…
725	if (next->flags & CF_NEW)	741	if (next->flags & CF_NEW)
726	{	742	{
727	/* need to start coroutine */	743	/* need to start coroutine */
728	next->flags &= ~CF_NEW;	744	next->flags &= ~CF_NEW;
729	/* first get rid of the old state */	745	/* first get rid of the old state */
730	SAVE (prev, -1);	746	save_perl (prev);
731	/* setup coroutine call */	747	/* setup coroutine call */
732	setup_coro (next);	748	setup_coro (next);
733	/* need a new stack */	749	/* need a new stack */
734	assert (!next->stack);	750	assert (!next->cctx);
735	}	751	}
736	else	752	else
737	{	753	{
738	/* coroutine already started */	754	/* coroutine already started */
739	SAVE (prev, flags);	755	save_perl (prev);
740	LOAD (next);	756	load_perl (next);
741	}	757	}
742		758
743	prev__cctx = prev->cctx;	759	prev__cctx = prev->cctx;
744		760
745	/* possibly "free" the cctx */	761	/* possibly "free" the cctx */
746	if (prev__cctx->idle_sp == STACKLEVEL)	762	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	763	{
748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
749	assert (PL_top_env == prev__cctx->top_env);	765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
750		766
751	prev->cctx = 0;	767	prev->cctx = 0;
752		768
753	cctx_put (prev__cctx);	769	cctx_put (prev__cctx);
754	prev__cctx->inuse = 0;	770	prev__cctx->inuse = 0;
…		…
775	}	791	}
776		792
777	struct transfer_args	793	struct transfer_args
778	{	794	{
779	struct coro prev, next;	795	struct coro prev, next;
780	int flags;
781	};	796	};
782		797
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
784		799
785	static void	800	static void
786	coro_state_destroy (struct coro *coro)	801	coro_state_destroy (struct coro *coro)
787	{	802	{
788	if (coro->refcnt--)	803	if (coro->refcnt--)
789	return;	804	return;
790		805
791	if (coro->mainstack && coro->mainstack != main_mainstack)	806	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	807	{
793	struct coro temp;	808	struct coro temp;
		809	Zero (&temp, 1, struct coro);
		810	temp.save = CORO_SAVE_ALL;
794		811
795	if (coro->flags & CF_RUNNING)	812	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	813	croak ("FATAL: tried to destroy currently running coroutine");
797		814
798	SAVE ((&temp), TRANSFER_SAVE_ALL);	815	save_perl (&temp);
799	LOAD (coro);	816	load_perl (coro);
800		817
801	coro_destroy_stacks ();	818	coro_destroy_stacks ();
802		819
803	LOAD ((&temp)); /* this will get rid of defsv etc.. */	820	load_perl (&temp); /* this will get rid of defsv etc.. */
804		821
805	coro->mainstack = 0;	822	coro->mainstack = 0;
806	}	823	}
807		824
808	cctx_destroy (coro->cctx);	825	cctx_destroy (coro->cctx);
…		…
863	assert (mg->mg_type == PERL_MAGIC_ext);	880	assert (mg->mg_type == PERL_MAGIC_ext);
864	return (struct coro *)mg->mg_ptr;	881	return (struct coro *)mg->mg_ptr;
865	}	882	}
866		883
867	static void	884	static void
868	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
869	{	886	{
870	ta->prev = SvSTATE (prev);	887	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next);	888	ta->next = SvSTATE (next_sv);
872	ta->flags = flags;
873	}	889	}
874		890
875	static void	891	static void
876	api_transfer (SV prev, SV next, int flags)	892	api_transfer (SV prev_sv, SV next_sv)
877	{	893	{
878	struct transfer_args ta;	894	struct transfer_args ta;
879		895
880	prepare_transfer (&ta, prev, next, flags);	896	prepare_transfer (&ta, prev_sv, next_sv);
881	TRANSFER (ta);	897	TRANSFER (ta);
		898	}
		899
		900	static int
		901	api_save (SV *coro_sv, int new_save)
		902	{
		903	struct coro *coro = SvSTATE (coro_sv);
		904	int old_save = coro->save;
		905
		906	if (new_save >= 0)
		907	coro->save = new_save;
		908
		909	return old_save;
882	}	910	}
883		911
884	/ Coro ******************************************************************/	912	/ Coro ******************************************************************/
885		913
886	#define PRIO_MAX 3	914	#define PRIO_MAX 3
…		…
932	coro = SvSTATE (coro_sv);	960	coro = SvSTATE (coro_sv);
933		961
934	if (coro->flags & CF_READY)	962	if (coro->flags & CF_READY)
935	return 0;	963	return 0;
936		964
937	#if 0 /* this is actually harmless */
938	if (coro->flags & CF_RUNNING)
939	croak ("Coro::ready called on currently running coroutine");
940	#endif
941
942	coro->flags \|= CF_READY;	965	coro->flags \|= CF_READY;
943		966
944	LOCK;	967	LOCK;
945	coro_enq (SvREFCNT_inc (coro_sv));	968	coro_enq (SvREFCNT_inc (coro_sv));
946	UNLOCK;	969	UNLOCK;
…		…
949	}	972	}
950		973
951	static int	974	static int
952	api_is_ready (SV *coro_sv)	975	api_is_ready (SV *coro_sv)
953	{	976	{
954	return !!SvSTATE (coro_sv)->flags & CF_READY;	977	return !!(SvSTATE (coro_sv)->flags & CF_READY);
955	}	978	}
956		979
957	static void	980	static void
958	prepare_schedule (struct transfer_args *ta)	981	prepare_schedule (struct transfer_args *ta)
959	{	982	{
…		…
995	assert (!SvROK(prev));//D	1018	assert (!SvROK(prev));//D
996	assert (!SvROK(next));//D	1019	assert (!SvROK(next));//D
997		1020
998	ta->prev = SvSTATE (prev);	1021	ta->prev = SvSTATE (prev);
999	ta->next = SvSTATE (next);	1022	ta->next = SvSTATE (next);
1000	ta->flags = TRANSFER_SAVE_ALL;
1001		1023
1002	assert (ta->flags & CF_READY);	1024	assert (ta->next->flags & CF_READY);
1003	ta->next->flags &= ~CF_READY;	1025	ta->next->flags &= ~CF_READY;
1004	}	1026	}
1005		1027
1006	static void	1028	static void
1007	prepare_cede (struct transfer_args *ta)	1029	prepare_cede (struct transfer_args *ta)
1008	{	1030	{
1009	api_ready (coro_current);	1031	api_ready (coro_current);
1010
1011	prepare_schedule (ta);	1032	prepare_schedule (ta);
		1033	}
		1034
		1035	static int
		1036	prepare_cede_notself (struct transfer_args *ta)
		1037	{
		1038	if (coro_nready)
		1039	{
		1040	SV *prev = SvRV (coro_current);
		1041	prepare_schedule (ta);
		1042	api_ready (prev);
		1043	return 1;
		1044	}
		1045	else
		1046	return 0;
1012	}	1047	}
1013		1048
1014	static void	1049	static void
1015	api_schedule (void)	1050	api_schedule (void)
1016	{	1051	{
…		…
1018		1053
1019	prepare_schedule (&ta);	1054	prepare_schedule (&ta);
1020	TRANSFER (ta);	1055	TRANSFER (ta);
1021	}	1056	}
1022		1057
1023	static void	1058	static int
1024	api_cede (void)	1059	api_cede (void)
1025	{	1060	{
1026	struct transfer_args ta;	1061	struct transfer_args ta;
1027		1062
1028	prepare_cede (&ta);	1063	prepare_cede (&ta);
		1064
		1065	if (ta.prev != ta.next)
		1066	{
1029	TRANSFER (ta);	1067	TRANSFER (ta);
		1068	return 1;
		1069	}
		1070	else
		1071	return 0;
		1072	}
		1073
		1074	static int
		1075	api_cede_notself (void)
		1076	{
		1077	struct transfer_args ta;
		1078
		1079	if (prepare_cede_notself (&ta))
		1080	{
		1081	TRANSFER (ta);
		1082	return 1;
		1083	}
		1084	else
		1085	return 0;
1030	}	1086	}
1031		1087
1032	MODULE = Coro::State PACKAGE = Coro::State	1088	MODULE = Coro::State PACKAGE = Coro::State
1033		1089
1034	PROTOTYPES: DISABLE	1090	PROTOTYPES: DISABLE
…		…
1040	#endif	1096	#endif
1041	BOOT_PAGESIZE;	1097	BOOT_PAGESIZE;
1042		1098
1043	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1044		1100
1045	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1046	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1047	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1048		1106
1049	main_mainstack = PL_mainstack;	1107	main_mainstack = PL_mainstack;
1050		1108
1051	coroapi.ver = CORO_API_VERSION;	1109	coroapi.ver = CORO_API_VERSION;
1052	coroapi.transfer = api_transfer;	1110	coroapi.transfer = api_transfer;
…		…
1062	HV *hv;	1120	HV *hv;
1063	int i;	1121	int i;
1064		1122
1065	Newz (0, coro, 1, struct coro);	1123	Newz (0, coro, 1, struct coro);
1066	coro->args = newAV ();	1124	coro->args = newAV ();
		1125	coro->save = CORO_SAVE_ALL;
1067	coro->flags = CF_NEW;	1126	coro->flags = CF_NEW;
1068		1127
1069	hv = newHV ();	1128	hv = newHV ();
1070	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1072		1131
1073	for (i = 1; i < items; i++)	1132	for (i = 1; i < items; i++)
1074	av_push (coro->args, newSVsv (ST (i)));	1133	av_push (coro->args, newSVsv (ST (i)));
1075	}	1134	}
1076	OUTPUT:	1135	OUTPUT:
		1136	RETVAL
		1137
		1138	int
		1139	save (SV *coro, int new_save = -1)
		1140	CODE:
		1141	RETVAL = api_save (coro, new_save);
		1142	OUTPUT:
1077	RETVAL	1143	RETVAL
1078		1144
1079	void	1145	void
1080	_set_stacklevel (...)	1146	_set_stacklevel (...)
1081	ALIAS:	1147	ALIAS:
1082	Coro::State::transfer = 1	1148	Coro::State::transfer = 1
1083	Coro::schedule = 2	1149	Coro::schedule = 2
1084	Coro::cede = 3	1150	Coro::cede = 3
		1151	Coro::cede_notself = 4
1085	CODE:	1152	CODE:
1086	{	1153	{
1087	struct transfer_args ta;	1154	struct transfer_args ta;
1088		1155
1089	switch (ix)	1156	switch (ix)
1090	{	1157	{
1091	case 0:	1158	case 0:
1092	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1159	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1093	ta.next = 0;	1160	ta.next = 0;
1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1095	break;	1161	break;
1096		1162
1097	case 1:	1163	case 1:
1098	if (items != 3)	1164	if (items != 2)
1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1100		1166
1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1167	prepare_transfer (&ta, ST (0), ST (1));
1102	break;	1168	break;
1103		1169
1104	case 2:	1170	case 2:
1105	prepare_schedule (&ta);	1171	prepare_schedule (&ta);
1106	break;	1172	break;
1107		1173
1108	case 3:	1174	case 3:
1109	prepare_cede (&ta);	1175	prepare_cede (&ta);
1110	break;	1176	break;
		1177
		1178	case 4:
		1179	if (!prepare_cede_notself (&ta))
		1180	XSRETURN_EMPTY;
		1181
		1182	break;
1111	}	1183	}
1112		1184
		1185	BARRIER;
1113	TRANSFER (ta);	1186	TRANSFER (ta);
1114	}	1187	}
1115		1188
1116	void	1189	void
1117	_clone_state_from (SV dst, SV src)	1190	_clone_state_from (SV dst, SV src)
…		…
1168	coro_ready[i] = newAV ();	1241	coro_ready[i] = newAV ();
1169		1242
1170	{	1243	{
1171	SV *sv = perl_get_sv("Coro::API", 1);	1244	SV *sv = perl_get_sv("Coro::API", 1);
1172		1245
1173	coroapi.schedule = api_schedule;	1246	coroapi.schedule = api_schedule;
		1247	coroapi.save = api_save;
1174	coroapi.cede = api_cede;	1248	coroapi.cede = api_cede;
		1249	coroapi.cede_notself = api_cede_notself;
1175	coroapi.ready = api_ready;	1250	coroapi.ready = api_ready;
1176	coroapi.is_ready = api_is_ready;	1251	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1252	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1253	coroapi.current = coro_current;
1179		1254
1180	GCoroAPI = &coroapi;	1255	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1256	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1257	SvREADONLY_on (sv);
1183	}	1258	}
1184	}	1259	}
		1260
		1261	void
		1262	_set_current (SV *current)
		1263	PROTOTYPE: $
		1264	CODE:
		1265	SvREFCNT_dec (SvRV (coro_current));
		1266	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1267
1186	int	1268	int
1187	prio (Coro::State coro, int newprio = 0)	1269	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1270	ALIAS:
1189	nice = 1	1271	nice = 1
…		…
1192	RETVAL = coro->prio;	1274	RETVAL = coro->prio;
1193		1275
1194	if (items > 1)	1276	if (items > 1)
1195	{	1277	{
1196	if (ix)	1278	if (ix)
1197	newprio += coro->prio;	1279	newprio = coro->prio - newprio;
1198		1280
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1281	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1282	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1283
1202	coro->prio = newprio;	1284	coro->prio = newprio;
1203	}	1285	}
1204	}	1286	}
		1287	OUTPUT:
		1288	RETVAL
1205		1289
1206	SV *	1290	SV *
1207	ready (SV *self)	1291	ready (SV *self)
1208	PROTOTYPE: $	1292	PROTOTYPE: $
1209	CODE:	1293	CODE:
…		…
1225	CODE:	1309	CODE:
1226	RETVAL = coro_nready;	1310	RETVAL = coro_nready;
1227	OUTPUT:	1311	OUTPUT:
1228	RETVAL	1312	RETVAL
1229		1313
1230	void
1231	_set_current (SV *current)
1232	PROTOTYPE: $
1233	CODE:
1234	SvREFCNT_dec (SvRV (coro_current));
1235	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1236
1237	MODULE = Coro::State PACKAGE = Coro::AIO	1314	MODULE = Coro::State PACKAGE = Coro::AIO
1238		1315
1239	SV *	1316	SV *
1240	_get_state ()	1317	_get_state ()
1241	CODE:	1318	CODE:
1242	{	1319	{
		1320	struct io_state *data;
		1321
1243	RETVAL = newSV (sizeof (struct io_state));	1322	RETVAL = newSV (sizeof (struct io_state));
1244	struct io_state data = (struct io_state )SvPVX (RETVAL);	1323	data = (struct io_state *)SvPVX (RETVAL);
1245	SvCUR_set (RETVAL, sizeof (struct io_state));	1324	SvCUR_set (RETVAL, sizeof (struct io_state));
1246	SvPOK_only (RETVAL);	1325	SvPOK_only (RETVAL);
1247		1326
1248	data->errorno = errno;	1327	data->errorno = errno;
1249	data->laststype = PL_laststype;	1328	data->laststype = PL_laststype;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs. Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs.
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC