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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs.
Revision 1.139 by root, Sun Jan 14 21:13:41 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	/* 5.8.7 */
44	#ifndef SvRV_set
45	# define SvRV_set(s,v) SvRV(s) = (v)
46	#endif
47
48	#include <stdio.h>	9	#include <stdio.h>
49	#include <errno.h>	10	#include <errno.h>
50	#include <assert.h>	11	#include <assert.h>
51
52	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
53	# undef STACKGUARD
54	#endif
55
56	#ifndef STACKGUARD
57	# define STACKGUARD 0
58	#endif
59		12
60	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
61	# include <unistd.h>	14	# include <unistd.h>
62	# include <sys/mman.h>	15	# include <sys/mman.h>
63	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
78	#else	31	#else
79	# define PAGESIZE 0	32	# define PAGESIZE 0
80	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
81	#endif	34	#endif
82		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
83	/* 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
84	* 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
85	* and should be unique. */	90	* and should be unique. */
86	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
88		93
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		95
91	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93	#else	99	#else
94	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
95	#endif	102	#endif
96		103
97	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
98		105
99	#include "CoroAPI.h"	106	#include "CoroAPI.h"
…		…
105	#else	112	#else
106	# define LOCK (void)0	113	# define LOCK (void)0
107	# define UNLOCK (void)0	114	# define UNLOCK (void)0
108	#endif	115	#endif
109		116
		117	/* helper storage struct for Coro::AIO */
110	struct io_state	118	struct io_state
111	{	119	{
112	int errorno;	120	int errorno;
113	I32 laststype;	121	I32 laststype;
114	int laststatval;	122	int laststatval;
…		…
130	/* the stack */	138	/* the stack */
131	void *sptr;	139	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
133		141
134	/* cpu state */	142	/* cpu state */
135	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 */
136	JMPENV *top_env;	145	JMPENV *top_env;
137	coro_context cctx;	146	coro_context cctx;
138		147
139	int inuse;	148	int inuse;
140		149
…		…
142	int valgrind_id;	151	int valgrind_id;
143	#endif	152	#endif
144	} coro_cctx;	153	} coro_cctx;
145		154
146	enum {	155	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	156	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	157	CF_READY = 0x0002, /* coroutine is ready */
149	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 */
150	};	160	};
151		161
152	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
153	struct coro {	163	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
…		…
176	};	186	};
177		187
178	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
180		190
		191	/ Coro ******************************************************************/
		192
		193	#define PRIO_MAX 3
		194	#define PRIO_HIGH 1
		195	#define PRIO_NORMAL 0
		196	#define PRIO_LOW -1
		197	#define PRIO_IDLE -3
		198	#define PRIO_MIN -4
		199
		200	/* for Coro.pm */
		201	static SV *coro_current;
		202	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		203	static int coro_nready;
		204
		205	/ lowlevel stuff ********************************************************/
		206
181	static AV *	207	static AV *
182	coro_clone_padlist (CV *cv)	208	coro_clone_padlist (CV *cv)
183	{	209	{
184	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	211	AV newpadlist, newpad;
…		…
259		285
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	288	else
263	{	289	{
264	#if 0	290	#if PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	291	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	292	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	293	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	294	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	295	SvREFCNT_dec (cp);
…		…
292	if (AvFILLp (av) >= AvMAX (av))	318	if (AvFILLp (av) >= AvMAX (av))
293	av_extend (av, AvMAX (av) + 1);	319	av_extend (av, AvMAX (av) + 1);
294		320
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	322	}
		323
		324	/ load & save, init *****************************************************/
297		325
298	#define SB do {	326	#define SB do {
299	#define SE } while (0)	327	#define SE } while (0)
300		328
301	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	329	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
…		…
350	/*	378	/*
351	* the worst thing you can imagine happens first - we have to save	379	* the worst thing you can imagine happens first - we have to save
352	* (and reinitialize) all cv's in the whole callchain :(	380	* (and reinitialize) all cv's in the whole callchain :(
353	*/	381	*/
354		382
		383	EXTEND (SP, 3 + 1);
355	PUSHs (Nullsv);	384	PUSHs (Nullsv);
356	/* this loop was inspired by pp_caller */	385	/* this loop was inspired by pp_caller */
357	for (;;)	386	for (;;)
358	{	387	{
359	while (cxix >= 0)	388	while (cxix >= 0)
…		…
365	CV *cv = cx->blk_sub.cv;	394	CV *cv = cx->blk_sub.cv;
366		395
367	if (CvDEPTH (cv))	396	if (CvDEPTH (cv))
368	{	397	{
369	EXTEND (SP, 3);	398	EXTEND (SP, 3);
370
371	PUSHs ((SV *)CvPADLIST (cv));	399	PUSHs ((SV *)CvPADLIST (cv));
372	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
373	PUSHs ((SV *)cv);	401	PUSHs ((SV *)cv);
374		402
375	CvDEPTH (cv) = 0;	403	CvDEPTH (cv) = 0;
376	get_padlist (cv);	404	get_padlist (cv);
377	}	405	}
378	}	406	}
379	#ifdef CXt_FORMAT
380	else if (CxTYPE (cx) == CXt_FORMAT)
381	{
382	/* I never used formats, so how should I know how these are implemented? */
383	/* my bold guess is as a simple, plain sub... */
384	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
385	}
386	#endif
387	}	407	}
388		408
389	if (top_si->si_type == PERLSI_MAIN)	409	if (top_si->si_type == PERLSI_MAIN)
390	break;	410	break;
391		411
…		…
411	* allocate various perl stacks. This is an exact copy	431	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	432	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	433	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	434	* not usually need a lot of stackspace.
415	*/	435	*/
		436	#if PREFER_PERL_FUNCTIONS
		437	# define coro_init_stacks init_stacks
		438	#else
416	static void	439	static void
417	coro_init_stacks ()	440	coro_init_stacks ()
418	{	441	{
419	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
420	PL_curstackinfo->si_type = PERLSI_MAIN;	443	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
450	New(54,PL_retstack,16,OP*);	473	New(54,PL_retstack,16,OP*);
451	PL_retstack_ix = 0;	474	PL_retstack_ix = 0;
452	PL_retstack_max = 16;	475	PL_retstack_max = 16;
453	#endif	476	#endif
454	}	477	}
		478	#endif
455		479
456	/*	480	/*
457	* destroy the stacks, the callchain etc...	481	* destroy the stacks, the callchain etc...
458	*/	482	*/
459	static void	483	static void
460	coro_destroy_stacks ()	484	coro_destroy_stacks ()
461	{	485	{
462	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
463	{	487	{
464	/* is this ugly, I ask? */	488	/* restore all saved variables and stuff */
465	LEAVE_SCOPE (0);	489	LEAVE_SCOPE (0);
		490	assert (PL_tmps_floor == -1);
466		491
467	/* sure it is, but more important: is it correct?? :/ */	492	/* free all temporaries */
468	FREETMPS;	493	FREETMPS;
		494	assert (PL_tmps_ix == -1);
469		495
		496	/* unwind all extra stacks */
470	/POPSTACK_TO (PL_mainstack);//D//use/	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
471	}	501	}
472		502
473	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
474	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
475		505
476	while (PL_curstackinfo)	506	while (PL_curstackinfo)
477	{	507	{
478	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
479		509
480	{ /D//remove/
481	dSP;
482	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
483	PUTBACK; /* possibly superfluous */
484	}
485
486	if (!IN_DESTRUCT)	510	if (!IN_DESTRUCT)
487	{
488	dounwind (-1);/D//remove/
489	SvREFCNT_dec (PL_curstackinfo->si_stack);	511	SvREFCNT_dec (PL_curstackinfo->si_stack);
490	}
491		512
492	Safefree (PL_curstackinfo->si_cxstack);	513	Safefree (PL_curstackinfo->si_cxstack);
493	Safefree (PL_curstackinfo);	514	Safefree (PL_curstackinfo);
494	PL_curstackinfo = p;	515	PL_curstackinfo = p;
495	}	516	}
…		…
500	Safefree (PL_savestack);	521	Safefree (PL_savestack);
501	#if !PERL_VERSION_ATLEAST (5,9,0)	522	#if !PERL_VERSION_ATLEAST (5,9,0)
502	Safefree (PL_retstack);	523	Safefree (PL_retstack);
503	#endif	524	#endif
504	}	525	}
		526
		527	/ coroutine stack handling **********************************************/
505		528
506	static void	529	static void
507	setup_coro (struct coro *coro)	530	setup_coro (struct coro *coro)
508	{	531	{
509	/*	532	/*
…		…
702	++cctx_idle;	725	++cctx_idle;
703	cctx->next = cctx_first;	726	cctx->next = cctx_first;
704	cctx_first = cctx;	727	cctx_first = cctx;
705	}	728	}
706		729
		730	/ coroutine switching ***************************************************/
		731
707	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
708	static void NOINLINE	733	static void NOINLINE
709	transfer (struct coro prev, struct coro next)	734	transfer (struct coro prev, struct coro next)
710	{	735	{
711	dSTACKLEVEL;	736	dSTACKLEVEL;
712		737
713	/* sometimes transfer is only called to set idle_sp */	738	/* sometimes transfer is only called to set idle_sp */
714	if (!next)	739	if (!next)
715	{	740	{
716	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
717	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
718	}	743	}
719	else if (prev != next)	744	else if (prev != next)
720	{	745	{
721	coro_cctx *prev__cctx;	746	coro_cctx *prev__cctx;
722		747
…		…
733	if (!prev->flags & CF_RUNNING)	758	if (!prev->flags & CF_RUNNING)
734	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	759	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
735		760
736	if (next->flags & CF_RUNNING)	761	if (next->flags & CF_RUNNING)
737	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	762	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		763
		764	if (next->flags & CF_DESTROYED)
		765	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
738		766
739	prev->flags &= ~CF_RUNNING;	767	prev->flags &= ~CF_RUNNING;
740	next->flags \|= CF_RUNNING;	768	next->flags \|= CF_RUNNING;
741		769
742	LOCK;	770	LOCK;
…		…
763		791
764	/* possibly "free" the cctx */	792	/* possibly "free" the cctx */
765	if (prev__cctx->idle_sp == STACKLEVEL)	793	if (prev__cctx->idle_sp == STACKLEVEL)
766	{	794	{
767	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	795	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
768	assert (PL_top_env == prev__cctx->top_env);	796	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
769		797
770	prev->cctx = 0;	798	prev->cctx = 0;
771		799
772	cctx_put (prev__cctx);	800	cctx_put (prev__cctx);
773	prev__cctx->inuse = 0;	801	prev__cctx->inuse = 0;
…		…
786	PL_top_env = next->cctx->top_env;	814	PL_top_env = next->cctx->top_env;
787	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
788	}	816	}
789		817
790	free_coro_mortal ();	818	free_coro_mortal ();
791
792	UNLOCK;	819	UNLOCK;
793	}	820	}
794	}	821	}
795		822
796	struct transfer_args	823	struct transfer_args
…		…
798	struct coro prev, next;	825	struct coro prev, next;
799	};	826	};
800		827
801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
802		829
		830	/ high level stuff ******************************************************/
		831
803	static void	832	static int
804	coro_state_destroy (struct coro *coro)	833	coro_state_destroy (struct coro *coro)
805	{	834	{
806	if (coro->refcnt--)	835	if (coro->flags & CF_DESTROYED)
807	return;	836	return 0;
		837
		838	coro->flags \|= CF_DESTROYED;
		839
		840	if (coro->flags & CF_READY)
		841	{
		842	/* reduce nready, as destroying a ready coro effectively unreadies it */
		843	/* alternative: look through all ready queues and remove the coro */
		844	LOCK;
		845	--coro_nready;
		846	UNLOCK;
		847	}
		848	else
		849	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
808		850
809	if (coro->mainstack && coro->mainstack != main_mainstack)	851	if (coro->mainstack && coro->mainstack != main_mainstack)
810	{	852	{
		853	assert (!(coro->flags & CF_RUNNING));
		854
811	struct coro temp;	855	struct coro temp;
812	Zero (&temp, 1, struct coro);	856	Zero (&temp, 1, struct coro);
813	temp.save = CORO_SAVE_ALL;	857	temp.save = CORO_SAVE_ALL;
814		858
815	if (coro->flags & CF_RUNNING)	859	if (coro->flags & CF_RUNNING)
…		…
825	coro->mainstack = 0;	869	coro->mainstack = 0;
826	}	870	}
827		871
828	cctx_destroy (coro->cctx);	872	cctx_destroy (coro->cctx);
829	SvREFCNT_dec (coro->args);	873	SvREFCNT_dec (coro->args);
830	Safefree (coro);	874
		875	return 1;
831	}	876	}
832		877
833	static int	878	static int
834	coro_state_clear (pTHX_ SV sv, MAGIC mg)	879	coro_state_free (pTHX_ SV sv, MAGIC mg)
835	{	880	{
836	struct coro coro = (struct coro )mg->mg_ptr;	881	struct coro coro = (struct coro )mg->mg_ptr;
837	mg->mg_ptr = 0;	882	mg->mg_ptr = 0;
838		883
		884	if (--coro->refcnt < 0)
		885	{
839	coro_state_destroy (coro);	886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
840		889
841	return 0;	890	return 0;
842	}	891	}
843		892
844	static int	893	static int
…		…
851	return 0;	900	return 0;
852	}	901	}
853		902
854	static MGVTBL coro_state_vtbl = {	903	static MGVTBL coro_state_vtbl = {
855	0, 0, 0, 0,	904	0, 0, 0, 0,
856	coro_state_clear,	905	coro_state_free,
857	0,	906	0,
858	#ifdef MGf_DUP	907	#ifdef MGf_DUP
859	coro_state_dup,	908	coro_state_dup,
860	#else	909	#else
861	# define MGf_DUP 0	910	# define MGf_DUP 0
…		…
912	return old_save;	961	return old_save;
913	}	962	}
914		963
915	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
916		965
917	#define PRIO_MAX 3
918	#define PRIO_HIGH 1
919	#define PRIO_NORMAL 0
920	#define PRIO_LOW -1
921	#define PRIO_IDLE -3
922	#define PRIO_MIN -4
923
924	/* for Coro.pm */
925	static SV *coro_current;
926	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
927	static int coro_nready;
928
929	static void	966	static void
930	coro_enq (SV *coro_sv)	967	coro_enq (SV *coro_sv)
931	{	968	{
932	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	969	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
933	coro_nready++;
934	}	970	}
935		971
936	static SV *	972	static SV *
937	coro_deq (int min_prio)	973	coro_deq (int min_prio)
938	{	974	{
…		…
942	if (min_prio < 0)	978	if (min_prio < 0)
943	min_prio = 0;	979	min_prio = 0;
944		980
945	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
946	if (AvFILLp (coro_ready [prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
947	{
948	coro_nready--;
949	return av_shift (coro_ready [prio]);	983	return av_shift (coro_ready [prio]);
950	}
951		984
952	return 0;	985	return 0;
953	}	986	}
954		987
955	static int	988	static int
…		…
963	coro = SvSTATE (coro_sv);	996	coro = SvSTATE (coro_sv);
964		997
965	if (coro->flags & CF_READY)	998	if (coro->flags & CF_READY)
966	return 0;	999	return 0;
967		1000
968	#if 0 /* this is actually harmless */
969	if (coro->flags & CF_RUNNING)
970	croak ("Coro::ready called on currently running coroutine");
971	#endif
972
973	coro->flags \|= CF_READY;	1001	coro->flags \|= CF_READY;
974		1002
975	LOCK;	1003	LOCK;
976	coro_enq (SvREFCNT_inc (coro_sv));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
977	UNLOCK;	1006	UNLOCK;
978		1007
979	return 1;	1008	return 1;
980	}	1009	}
981		1010
982	static int	1011	static int
983	api_is_ready (SV *coro_sv)	1012	api_is_ready (SV *coro_sv)
984	{	1013	{
985	return !!SvSTATE (coro_sv)->flags & CF_READY;	1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);
986	}	1015	}
987		1016
988	static void	1017	static void
989	prepare_schedule (struct transfer_args *ta)	1018	prepare_schedule (struct transfer_args *ta)
990	{	1019	{
991	SV prev, next;	1020	SV prev_sv, next_sv;
992		1021
993	for (;;)	1022	for (;;)
994	{	1023	{
995	LOCK;	1024	LOCK;
996	next = coro_deq (PRIO_MIN);	1025	next_sv = coro_deq (PRIO_MIN);
		1026
		1027	/* nothing to schedule: call the idle handler */
		1028	if (!next_sv)
		1029	{
		1030	UNLOCK;
		1031	dSP;
		1032
		1033	ENTER;
		1034	SAVETMPS;
		1035
		1036	PUSHMARK (SP);
		1037	PUTBACK;
		1038	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1039
		1040	FREETMPS;
		1041	LEAVE;
		1042	continue;
		1043	}
		1044
		1045	ta->next = SvSTATE (next_sv);
		1046
		1047	/* cannot transfer to destroyed coros, skip and look for next */
		1048	if (ta->next->flags & CF_DESTROYED)
		1049	{
		1050	UNLOCK;
		1051	SvREFCNT_dec (next_sv);
		1052	/* coro_nready is already taken care of by destroy */
		1053	continue;
		1054	}
		1055
		1056	--coro_nready;
997	UNLOCK;	1057	UNLOCK;
998
999	if (next)
1000	break;	1058	break;
1001
1002	{
1003	dSP;
1004
1005	ENTER;
1006	SAVETMPS;
1007
1008	PUSHMARK (SP);
1009	PUTBACK;
1010	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1011
1012	FREETMPS;
1013	LEAVE;
1014	}	1059	}
1015	}
1016
1017	prev = SvRV (coro_current);
1018	SvRV_set (coro_current, next);
1019		1060
1020	/* free this only after the transfer */	1061	/* free this only after the transfer */
		1062	prev_sv = SvRV (coro_current);
		1063	SvRV_set (coro_current, next_sv);
		1064	ta->prev = SvSTATE (prev_sv);
		1065
		1066	assert (ta->next->flags & CF_READY);
		1067	ta->next->flags &= ~CF_READY;
		1068
1021	LOCK;	1069	LOCK;
1022	free_coro_mortal ();	1070	free_coro_mortal ();
		1071	coro_mortal = prev_sv;
1023	UNLOCK;	1072	UNLOCK;
1024	coro_mortal = prev;
1025
1026	assert (!SvROK(prev));//D
1027	assert (!SvROK(next));//D
1028
1029	ta->prev = SvSTATE (prev);
1030	ta->next = SvSTATE (next);
1031
1032	assert (ta->next->flags & CF_READY);
1033	ta->next->flags &= ~CF_READY;
1034	}	1073	}
1035		1074
1036	static void	1075	static void
1037	prepare_cede (struct transfer_args *ta)	1076	prepare_cede (struct transfer_args *ta)
1038	{	1077	{
1039	api_ready (coro_current);	1078	api_ready (coro_current);
1040
1041	prepare_schedule (ta);	1079	prepare_schedule (ta);
		1080	}
		1081
		1082	static int
		1083	prepare_cede_notself (struct transfer_args *ta)
		1084	{
		1085	if (coro_nready)
		1086	{
		1087	SV *prev = SvRV (coro_current);
		1088	prepare_schedule (ta);
		1089	api_ready (prev);
		1090	return 1;
		1091	}
		1092	else
		1093	return 0;
1042	}	1094	}
1043		1095
1044	static void	1096	static void
1045	api_schedule (void)	1097	api_schedule (void)
1046	{	1098	{
…		…
1048		1100
1049	prepare_schedule (&ta);	1101	prepare_schedule (&ta);
1050	TRANSFER (ta);	1102	TRANSFER (ta);
1051	}	1103	}
1052		1104
1053	static void	1105	static int
1054	api_cede (void)	1106	api_cede (void)
1055	{	1107	{
1056	struct transfer_args ta;	1108	struct transfer_args ta;
1057		1109
1058	prepare_cede (&ta);	1110	prepare_cede (&ta);
		1111
		1112	if (ta.prev != ta.next)
		1113	{
1059	TRANSFER (ta);	1114	TRANSFER (ta);
		1115	return 1;
		1116	}
		1117	else
		1118	return 0;
		1119	}
		1120
		1121	static int
		1122	api_cede_notself (void)
		1123	{
		1124	struct transfer_args ta;
		1125
		1126	if (prepare_cede_notself (&ta))
		1127	{
		1128	TRANSFER (ta);
		1129	return 1;
		1130	}
		1131	else
		1132	return 0;
1060	}	1133	}
1061		1134
1062	MODULE = Coro::State PACKAGE = Coro::State	1135	MODULE = Coro::State PACKAGE = Coro::State
1063		1136
1064	PROTOTYPES: DISABLE	1137	PROTOTYPES: DISABLE
…		…
1120	_set_stacklevel (...)	1193	_set_stacklevel (...)
1121	ALIAS:	1194	ALIAS:
1122	Coro::State::transfer = 1	1195	Coro::State::transfer = 1
1123	Coro::schedule = 2	1196	Coro::schedule = 2
1124	Coro::cede = 3	1197	Coro::cede = 3
		1198	Coro::cede_notself = 4
1125	CODE:	1199	CODE:
1126	{	1200	{
1127	struct transfer_args ta;	1201	struct transfer_args ta;
1128		1202
1129	switch (ix)	1203	switch (ix)
…		…
1145	break;	1219	break;
1146		1220
1147	case 3:	1221	case 3:
1148	prepare_cede (&ta);	1222	prepare_cede (&ta);
1149	break;	1223	break;
		1224
		1225	case 4:
		1226	if (!prepare_cede_notself (&ta))
		1227	XSRETURN_EMPTY;
		1228
		1229	break;
1150	}	1230	}
1151		1231
		1232	BARRIER;
1152	TRANSFER (ta);	1233	TRANSFER (ta);
1153	}
1154		1234
1155	void	1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
1156	_clone_state_from (SV dst, SV src)	1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
1157	CODE:	1241	CODE:
1158	{	1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1159	struct coro *coro_src = SvSTATE (src);	1243	OUTPUT:
1160		1244	RETVAL
1161	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1162
1163	++coro_src->refcnt;
1164	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1165	}
1166		1245
1167	void	1246	void
1168	_exit (code)	1247	_exit (code)
1169	int code	1248	int code
1170	PROTOTYPE: $	1249	PROTOTYPE: $
…		…
1207	coro_ready[i] = newAV ();	1286	coro_ready[i] = newAV ();
1208		1287
1209	{	1288	{
1210	SV *sv = perl_get_sv("Coro::API", 1);	1289	SV *sv = perl_get_sv("Coro::API", 1);
1211		1290
1212	coroapi.schedule = api_schedule;	1291	coroapi.schedule = api_schedule;
1213	coroapi.save = api_save;	1292	coroapi.save = api_save;
1214	coroapi.cede = api_cede;	1293	coroapi.cede = api_cede;
		1294	coroapi.cede_notself = api_cede_notself;
1215	coroapi.ready = api_ready;	1295	coroapi.ready = api_ready;
1216	coroapi.is_ready = api_is_ready;	1296	coroapi.is_ready = api_is_ready;
1217	coroapi.nready = &coro_nready;	1297	coroapi.nready = &coro_nready;
1218	coroapi.current = coro_current;	1298	coroapi.current = coro_current;
1219		1299
1220	GCoroAPI = &coroapi;	1300	GCoroAPI = &coroapi;
1221	sv_setiv (sv, (IV)&coroapi);	1301	sv_setiv (sv, (IV)&coroapi);
1222	SvREADONLY_on (sv);	1302	SvREADONLY_on (sv);
1223	}	1303	}
…		…
1239	RETVAL = coro->prio;	1319	RETVAL = coro->prio;
1240		1320
1241	if (items > 1)	1321	if (items > 1)
1242	{	1322	{
1243	if (ix)	1323	if (ix)
1244	newprio += coro->prio;	1324	newprio = coro->prio - newprio;
1245		1325
1246	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1326	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1247	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1327	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1248		1328
1249	coro->prio = newprio;	1329	coro->prio = newprio;
1250	}	1330	}
1251	}	1331	}
		1332	OUTPUT:
		1333	RETVAL
1252		1334
1253	SV *	1335	SV *
1254	ready (SV *self)	1336	ready (SV *self)
1255	PROTOTYPE: $	1337	PROTOTYPE: $
1256	CODE:	1338	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs. Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.125 by root, Mon Dec 11 20:54:45 2006 UTC vs.
Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC