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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 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	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		39	#else
		40	# define REGISTER_STACK(cctx,start,end)
		41	#endif
		42
		43	/* the maximum number of idle cctx that will be pooled */
		44	#define MAX_IDLE_CCTX 8
		45
		46	#define PERL_VERSION_ATLEAST(a,b,c) \
		47	(PERL_REVISION > (a) \
		48	\|\| (PERL_REVISION == (a) \
		49	&& (PERL_VERSION > (b) \
		50	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		51
		52	#if !PERL_VERSION_ATLEAST (5,6,0)
		53	# ifndef PL_ppaddr
		54	# define PL_ppaddr ppaddr
		55	# endif
		56	# ifndef call_sv
		57	# define call_sv perl_call_sv
		58	# endif
		59	# ifndef get_sv
		60	# define get_sv perl_get_sv
		61	# endif
		62	# ifndef get_cv
		63	# define get_cv perl_get_cv
		64	# endif
		65	# ifndef IS_PADGV
		66	# define IS_PADGV(v) 0
		67	# endif
		68	# ifndef IS_PADCONST
		69	# define IS_PADCONST(v) 0
		70	# endif
		71	#endif
		72
		73	/* 5.8.7 */
		74	#ifndef SvRV_set
		75	# define SvRV_set(s,v) SvRV(s) = (v)
		76	#endif
		77
		78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		79	# undef STACKGUARD
		80	#endif
		81
		82	#ifndef STACKGUARD
		83	# define STACKGUARD 0
		84	#endif
		85
		86	/* prefer perl internal functions over our own? */
		87	#ifndef PREFER_PERL_FUNCTIONS
		88	# define PREFER_PERL_FUNCTIONS 0
		89	#endif
		90
83	/* 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
84	* 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
85	* and should be unique. */	93	* and should be unique. */
86	#define dSTACKLEVEL int stacklevel	94	#define dSTACKLEVEL int stacklevel
87	#define STACKLEVEL ((void *)&stacklevel)	95	#define STACKLEVEL ((void *)&stacklevel)
88		96
89	#define IN_DESTRUCT (PL_main_cv == Nullcv)	97	#define IN_DESTRUCT (PL_main_cv == Nullcv)
90		98
91	#if __GNUC__ >= 3	99	#if __GNUC__ >= 3
92	# define attribute(x) __attribute__(x)	100	# define attribute(x) __attribute__(x)
		101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
93	#else	102	#else
94	# define attribute(x)	103	# define attribute(x)
		104	# define BARRIER
95	#endif	105	#endif
96		106
97	#define NOINLINE attribute ((noinline))	107	#define NOINLINE attribute ((noinline))
98		108
99	#include "CoroAPI.h"	109	#include "CoroAPI.h"
…		…
105	#else	115	#else
106	# define LOCK (void)0	116	# define LOCK (void)0
107	# define UNLOCK (void)0	117	# define UNLOCK (void)0
108	#endif	118	#endif
109		119
		120	/* helper storage struct for Coro::AIO */
110	struct io_state	121	struct io_state
111	{	122	{
112	int errorno;	123	int errorno;
113	I32 laststype;	124	I32 laststype;
114	int laststatval;	125	int laststatval;
…		…
127	typedef struct coro_cctx {	138	typedef struct coro_cctx {
128	struct coro_cctx *next;	139	struct coro_cctx *next;
129		140
130	/* the stack */	141	/* the stack */
131	void *sptr;	142	void *sptr;
132	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
133		144
134	/* cpu state */	145	/* cpu state */
135	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 */
136	JMPENV *top_env;	148	JMPENV *top_env;
137	coro_context cctx;	149	coro_context cctx;
138		150
139	int inuse;	151	int inuse;
140		152
…		…
142	int valgrind_id;	154	int valgrind_id;
143	#endif	155	#endif
144	} coro_cctx;	156	} coro_cctx;
145		157
146	enum {	158	enum {
147	CF_RUNNING = 0x0001, /* coroutine is running */	159	CF_RUNNING = 0x0001, /* coroutine is running */
148	CF_READY = 0x0002, /* coroutine is ready */	160	CF_READY = 0x0002, /* coroutine is ready */
149	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 */
150	};	163	};
151		164
152	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
153	struct coro {	166	struct coro {
154	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
…		…
176	};	189	};
177		190
178	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
179	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
180		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
181	static AV *	210	static AV *
182	coro_clone_padlist (CV *cv)	211	coro_clone_padlist (CV *cv)
183	{	212	{
184	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
185	AV newpadlist, newpad;	214	AV newpadlist, newpad;
…		…
259		288
260	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
261	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
262	else	291	else
263	{	292	{
264	#if 0	293	#if PREFER_PERL_FUNCTIONS
265	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
266	CV *cp = Perl_cv_clone (cv);	295	CV *cp = Perl_cv_clone (cv);
267	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
268	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
269	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
…		…
292	if (AvFILLp (av) >= AvMAX (av))	321	if (AvFILLp (av) >= AvMAX (av))
293	av_extend (av, AvMAX (av) + 1);	322	av_extend (av, AvMAX (av) + 1);
294		323
295	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
296	}	325	}
		326
		327	/ load & save, init *****************************************************/
297		328
298	#define SB do {	329	#define SB do {
299	#define SE } while (0)	330	#define SE } while (0)
300		331
301	#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
…		…
334	CvPADLIST (cv) = (AV *)POPs;	365	CvPADLIST (cv) = (AV *)POPs;
335	}	366	}
336		367
337	PUTBACK;	368	PUTBACK;
338	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
339	}	371	}
340		372
341	static void	373	static void
342	save_perl (Coro__State c)	374	save_perl (Coro__State c)
343	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
344	{	377	{
345	dSP;	378	dSP;
346	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
347	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
348	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
403	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
404	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
405	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
406	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
407	*/	440	*/
408	#if USE_PERL_INIT_STACKS	441	#if PREFER_PERL_FUNCTIONS
409	# define coro_init_stacks init_stacks	442	# define coro_init_stacks init_stacks
410	#else	443	#else
411
412	static void	444	static void
413	coro_init_stacks ()	445	coro_init_stacks ()
414	{	446	{
415	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
416	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
446	New(54,PL_retstack,16,OP*);	478	New(54,PL_retstack,16,OP*);
447	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
448	PL_retstack_max = 16;	480	PL_retstack_max = 16;
449	#endif	481	#endif
450	}	482	}
		483	#endif
451		484
452	/*	485	/*
453	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
454	*/	487	*/
455	static void	488	static void
…		…
463		496
464	/* free all temporaries */	497	/* free all temporaries */
465	FREETMPS;	498	FREETMPS;
466	assert (PL_tmps_ix == -1);	499	assert (PL_tmps_ix == -1);
467		500
		501	/* unwind all extra stacks */
468	POPSTACK_TO (PL_mainstack);	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
469	}	506	}
470		507
471	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
472	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
473		510
…		…
489	Safefree (PL_savestack);	526	Safefree (PL_savestack);
490	#if !PERL_VERSION_ATLEAST (5,9,0)	527	#if !PERL_VERSION_ATLEAST (5,9,0)
491	Safefree (PL_retstack);	528	Safefree (PL_retstack);
492	#endif	529	#endif
493	}	530	}
494	#endif	531
		532	/ coroutine stack handling **********************************************/
495		533
496	static void	534	static void
497	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
498	{	536	{
499	/*	537	/*
…		…
502		540
503	coro_init_stacks ();	541	coro_init_stacks ();
504		542
505	PL_curcop = &PL_compiling;	543	PL_curcop = &PL_compiling;
506	PL_in_eval = EVAL_NULL;	544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
507	PL_curpm = 0;	546	PL_curpm = 0;
508	PL_localizing = 0;	547	PL_localizing = 0;
509	PL_dirty = 0;	548	PL_dirty = 0;
510	PL_restartop = 0;	549	PL_restartop = 0;
511		550
…		…
597		636
598	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	637	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
599	/* mmap supposedly does allocate-on-write for us */	638	/* mmap supposedly does allocate-on-write for us */
600	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);
601		640
602	if (cctx->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
603	{
604	perror ("FATAL: unable to mmap stack for coroutine");
605	_exit (EXIT_FAILURE);
606	}	642	{
607
608	# if STACKGUARD	643	# if STACKGUARD
609	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	644	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
610	# endif	645	# endif
611		646	REGISTER_STACK (
612	#else	647	cctx,
613
614	cctx->ssize = STACKSIZE * (long)sizeof (long);
615	New (0, cctx->sptr, STACKSIZE, long);
616
617	if (!cctx->sptr)
618	{
619	perror ("FATAL: unable to malloc stack for coroutine");
620	_exit (EXIT_FAILURE);
621	}
622
623	#endif
624
625	#if USE_VALGRIND
626	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
627	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	648	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
628	cctx->ssize + (char *)cctx->sptr	649	cctx->ssize + (char *)cctx->sptr
629	);	650	);
630	#endif
631		651
632	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 = -STACKSIZE * (long)sizeof (long);
		658	New (0, cctx->sptr, 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	}
633		674
634	return cctx;	675	return cctx;
635	}	676	}
636		677
637	static void	678	static void
…		…
645	#if USE_VALGRIND	686	#if USE_VALGRIND
646	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
647	#endif	688	#endif
648		689
649	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
650	munmap (cctx->sptr, cctx->ssize);	692	munmap (cctx->sptr, cctx->ssize);
651	#else	693	else
		694	#endif
652	Safefree (cctx->sptr);	695	Safefree (cctx->sptr);
653	#endif
654		696
655	Safefree (cctx);	697	Safefree (cctx);
656	}	698	}
657		699
658	static coro_cctx *	700	static coro_cctx *
…		…
692	++cctx_idle;	734	++cctx_idle;
693	cctx->next = cctx_first;	735	cctx->next = cctx_first;
694	cctx_first = cctx;	736	cctx_first = cctx;
695	}	737	}
696		738
		739	/ coroutine switching ***************************************************/
		740
697	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
698	static void NOINLINE	742	static void NOINLINE
699	transfer (struct coro prev, struct coro next)	743	transfer (struct coro prev, struct coro next)
700	{	744	{
701	dSTACKLEVEL;	745	dSTACKLEVEL;
702		746
703	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
704	if (!next)	748	if (!next)
705	{	749	{
706	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
707	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 */
708	}	752	}
709	else if (prev != next)	753	else if (prev != next)
710	{	754	{
711	coro_cctx *prev__cctx;	755	coro_cctx *prev__cctx;
712		756
…		…
723	if (!prev->flags & CF_RUNNING)	767	if (!prev->flags & CF_RUNNING)
724	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");
725		769
726	if (next->flags & CF_RUNNING)	770	if (next->flags & CF_RUNNING)
727	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");
728		775
729	prev->flags &= ~CF_RUNNING;	776	prev->flags &= ~CF_RUNNING;
730	next->flags \|= CF_RUNNING;	777	next->flags \|= CF_RUNNING;
731		778
732	LOCK;	779	LOCK;
…		…
753		800
754	/* possibly "free" the cctx */	801	/* possibly "free" the cctx */
755	if (prev__cctx->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
756	{	803	{
757	/* 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 */
758	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));
759		806
760	prev->cctx = 0;	807	prev->cctx = 0;
761		808
762	cctx_put (prev__cctx);	809	cctx_put (prev__cctx);
763	prev__cctx->inuse = 0;	810	prev__cctx->inuse = 0;
…		…
776	PL_top_env = next->cctx->top_env;	823	PL_top_env = next->cctx->top_env;
777	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
778	}	825	}
779		826
780	free_coro_mortal ();	827	free_coro_mortal ();
781
782	UNLOCK;	828	UNLOCK;
783	}	829	}
784	}	830	}
785		831
786	struct transfer_args	832	struct transfer_args
…		…
788	struct coro prev, next;	834	struct coro prev, next;
789	};	835	};
790		836
791	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
792		838
		839	/ high level stuff ******************************************************/
		840
793	static void	841	static int
794	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
795	{	843	{
796	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
797	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 */
798		859
799	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
800	{	861	{
801	struct coro temp;	862	struct coro temp;
		863
		864	assert (!(coro->flags & CF_RUNNING));
		865
802	Zero (&temp, 1, struct coro);	866	Zero (&temp, 1, struct coro);
803	temp.save = CORO_SAVE_ALL;	867	temp.save = CORO_SAVE_ALL;
804		868
805	if (coro->flags & CF_RUNNING)	869	if (coro->flags & CF_RUNNING)
806	croak ("FATAL: tried to destroy currently running coroutine");	870	croak ("FATAL: tried to destroy currently running coroutine");
…		…
815	coro->mainstack = 0;	879	coro->mainstack = 0;
816	}	880	}
817		881
818	cctx_destroy (coro->cctx);	882	cctx_destroy (coro->cctx);
819	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
820	Safefree (coro);	884
		885	return 1;
821	}	886	}
822		887
823	static int	888	static int
824	coro_state_clear (pTHX_ SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
825	{	890	{
826	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
827	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
828		893
		894	if (--coro->refcnt < 0)
		895	{
829	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
830		899
831	return 0;	900	return 0;
832	}	901	}
833		902
834	static int	903	static int
…		…
841	return 0;	910	return 0;
842	}	911	}
843		912
844	static MGVTBL coro_state_vtbl = {	913	static MGVTBL coro_state_vtbl = {
845	0, 0, 0, 0,	914	0, 0, 0, 0,
846	coro_state_clear,	915	coro_state_free,
847	0,	916	0,
848	#ifdef MGf_DUP	917	#ifdef MGf_DUP
849	coro_state_dup,	918	coro_state_dup,
850	#else	919	#else
851	# define MGf_DUP 0	920	# define MGf_DUP 0
…		…
902	return old_save;	971	return old_save;
903	}	972	}
904		973
905	/ Coro ******************************************************************/	974	/ Coro ******************************************************************/
906		975
907	#define PRIO_MAX 3
908	#define PRIO_HIGH 1
909	#define PRIO_NORMAL 0
910	#define PRIO_LOW -1
911	#define PRIO_IDLE -3
912	#define PRIO_MIN -4
913
914	/* for Coro.pm */
915	static SV *coro_current;
916	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
917	static int coro_nready;
918
919	static void	976	static void
920	coro_enq (SV *coro_sv)	977	coro_enq (SV *coro_sv)
921	{	978	{
922	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
923	coro_nready++;
924	}	980	}
925		981
926	static SV *	982	static SV *
927	coro_deq (int min_prio)	983	coro_deq (int min_prio)
928	{	984	{
…		…
932	if (min_prio < 0)	988	if (min_prio < 0)
933	min_prio = 0;	989	min_prio = 0;
934		990
935	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	991	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
936	if (AvFILLp (coro_ready [prio]) >= 0)	992	if (AvFILLp (coro_ready [prio]) >= 0)
937	{
938	coro_nready--;
939	return av_shift (coro_ready [prio]);	993	return av_shift (coro_ready [prio]);
940	}
941		994
942	return 0;	995	return 0;
943	}	996	}
944		997
945	static int	998	static int
…		…
953	coro = SvSTATE (coro_sv);	1006	coro = SvSTATE (coro_sv);
954		1007
955	if (coro->flags & CF_READY)	1008	if (coro->flags & CF_READY)
956	return 0;	1009	return 0;
957		1010
958	#if 0 /* this is actually harmless */
959	if (coro->flags & CF_RUNNING)
960	croak ("Coro::ready called on currently running coroutine");
961	#endif
962
963	coro->flags \|= CF_READY;	1011	coro->flags \|= CF_READY;
964		1012
965	LOCK;	1013	LOCK;
966	coro_enq (SvREFCNT_inc (coro_sv));	1014	coro_enq (SvREFCNT_inc (coro_sv));
		1015	++coro_nready;
967	UNLOCK;	1016	UNLOCK;
968		1017
969	return 1;	1018	return 1;
970	}	1019	}
971		1020
972	static int	1021	static int
973	api_is_ready (SV *coro_sv)	1022	api_is_ready (SV *coro_sv)
974	{	1023	{
975	return !!SvSTATE (coro_sv)->flags & CF_READY;	1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);
976	}	1025	}
977		1026
978	static void	1027	static void
979	prepare_schedule (struct transfer_args *ta)	1028	prepare_schedule (struct transfer_args *ta)
980	{	1029	{
981	SV prev, next;	1030	SV prev_sv, next_sv;
982		1031
983	for (;;)	1032	for (;;)
984	{	1033	{
985	LOCK;	1034	LOCK;
986	next = coro_deq (PRIO_MIN);	1035	next_sv = coro_deq (PRIO_MIN);
		1036
		1037	/* nothing to schedule: call the idle handler */
		1038	if (!next_sv)
		1039	{
		1040	dSP;
		1041	UNLOCK;
		1042
		1043	ENTER;
		1044	SAVETMPS;
		1045
		1046	PUSHMARK (SP);
		1047	PUTBACK;
		1048	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1049
		1050	FREETMPS;
		1051	LEAVE;
		1052	continue;
		1053	}
		1054
		1055	ta->next = SvSTATE (next_sv);
		1056
		1057	/* cannot transfer to destroyed coros, skip and look for next */
		1058	if (ta->next->flags & CF_DESTROYED)
		1059	{
		1060	UNLOCK;
		1061	SvREFCNT_dec (next_sv);
		1062	/* coro_nready is already taken care of by destroy */
		1063	continue;
		1064	}
		1065
		1066	--coro_nready;
987	UNLOCK;	1067	UNLOCK;
988
989	if (next)
990	break;	1068	break;
991
992	{
993	dSP;
994
995	ENTER;
996	SAVETMPS;
997
998	PUSHMARK (SP);
999	PUTBACK;
1000	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1001
1002	FREETMPS;
1003	LEAVE;
1004	}	1069	}
1005	}
1006
1007	prev = SvRV (coro_current);
1008	SvRV_set (coro_current, next);
1009		1070
1010	/* free this only after the transfer */	1071	/* free this only after the transfer */
		1072	prev_sv = SvRV (coro_current);
		1073	SvRV_set (coro_current, next_sv);
		1074	ta->prev = SvSTATE (prev_sv);
		1075
		1076	assert (ta->next->flags & CF_READY);
		1077	ta->next->flags &= ~CF_READY;
		1078
1011	LOCK;	1079	LOCK;
1012	free_coro_mortal ();	1080	free_coro_mortal ();
		1081	coro_mortal = prev_sv;
1013	UNLOCK;	1082	UNLOCK;
1014	coro_mortal = prev;
1015
1016	assert (!SvROK(prev));//D
1017	assert (!SvROK(next));//D
1018
1019	ta->prev = SvSTATE (prev);
1020	ta->next = SvSTATE (next);
1021
1022	assert (ta->next->flags & CF_READY);
1023	ta->next->flags &= ~CF_READY;
1024	}	1083	}
1025		1084
1026	static void	1085	static void
1027	prepare_cede (struct transfer_args *ta)	1086	prepare_cede (struct transfer_args *ta)
1028	{	1087	{
1029	api_ready (coro_current);	1088	api_ready (coro_current);
1030
1031	prepare_schedule (ta);	1089	prepare_schedule (ta);
		1090	}
		1091
		1092	static int
		1093	prepare_cede_notself (struct transfer_args *ta)
		1094	{
		1095	if (coro_nready)
		1096	{
		1097	SV *prev = SvRV (coro_current);
		1098	prepare_schedule (ta);
		1099	api_ready (prev);
		1100	return 1;
		1101	}
		1102	else
		1103	return 0;
1032	}	1104	}
1033		1105
1034	static void	1106	static void
1035	api_schedule (void)	1107	api_schedule (void)
1036	{	1108	{
…		…
1038		1110
1039	prepare_schedule (&ta);	1111	prepare_schedule (&ta);
1040	TRANSFER (ta);	1112	TRANSFER (ta);
1041	}	1113	}
1042		1114
1043	static void	1115	static int
1044	api_cede (void)	1116	api_cede (void)
1045	{	1117	{
1046	struct transfer_args ta;	1118	struct transfer_args ta;
1047		1119
1048	prepare_cede (&ta);	1120	prepare_cede (&ta);
		1121
		1122	if (ta.prev != ta.next)
		1123	{
1049	TRANSFER (ta);	1124	TRANSFER (ta);
		1125	return 1;
		1126	}
		1127	else
		1128	return 0;
		1129	}
		1130
		1131	static int
		1132	api_cede_notself (void)
		1133	{
		1134	struct transfer_args ta;
		1135
		1136	if (prepare_cede_notself (&ta))
		1137	{
		1138	TRANSFER (ta);
		1139	return 1;
		1140	}
		1141	else
		1142	return 0;
1050	}	1143	}
1051		1144
1052	MODULE = Coro::State PACKAGE = Coro::State	1145	MODULE = Coro::State PACKAGE = Coro::State
1053		1146
1054	PROTOTYPES: DISABLE	1147	PROTOTYPES: DISABLE
…		…
1110	_set_stacklevel (...)	1203	_set_stacklevel (...)
1111	ALIAS:	1204	ALIAS:
1112	Coro::State::transfer = 1	1205	Coro::State::transfer = 1
1113	Coro::schedule = 2	1206	Coro::schedule = 2
1114	Coro::cede = 3	1207	Coro::cede = 3
		1208	Coro::cede_notself = 4
1115	CODE:	1209	CODE:
1116	{	1210	{
1117	struct transfer_args ta;	1211	struct transfer_args ta;
1118		1212
1119	switch (ix)	1213	switch (ix)
…		…
1135	break;	1229	break;
1136		1230
1137	case 3:	1231	case 3:
1138	prepare_cede (&ta);	1232	prepare_cede (&ta);
1139	break;	1233	break;
		1234
		1235	case 4:
		1236	if (!prepare_cede_notself (&ta))
		1237	XSRETURN_EMPTY;
		1238
		1239	break;
1140	}	1240	}
1141		1241
		1242	BARRIER;
1142	TRANSFER (ta);	1243	TRANSFER (ta);
1143	}
1144		1244
1145	void	1245	if (GIMME_V != G_VOID && ta.next != ta.prev)
1146	_clone_state_from (SV dst, SV src)	1246	XSRETURN_YES;
		1247	}
		1248
		1249	bool
		1250	_destroy (SV *coro_sv)
1147	CODE:	1251	CODE:
1148	{	1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1149	struct coro *coro_src = SvSTATE (src);	1253	OUTPUT:
1150		1254	RETVAL
1151	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1152
1153	++coro_src->refcnt;
1154	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1155	}
1156		1255
1157	void	1256	void
1158	_exit (code)	1257	_exit (code)
1159	int code	1258	int code
1160	PROTOTYPE: $	1259	PROTOTYPE: $
…		…
1197	coro_ready[i] = newAV ();	1296	coro_ready[i] = newAV ();
1198		1297
1199	{	1298	{
1200	SV *sv = perl_get_sv("Coro::API", 1);	1299	SV *sv = perl_get_sv("Coro::API", 1);
1201		1300
1202	coroapi.schedule = api_schedule;	1301	coroapi.schedule = api_schedule;
1203	coroapi.save = api_save;	1302	coroapi.save = api_save;
1204	coroapi.cede = api_cede;	1303	coroapi.cede = api_cede;
		1304	coroapi.cede_notself = api_cede_notself;
1205	coroapi.ready = api_ready;	1305	coroapi.ready = api_ready;
1206	coroapi.is_ready = api_is_ready;	1306	coroapi.is_ready = api_is_ready;
1207	coroapi.nready = &coro_nready;	1307	coroapi.nready = &coro_nready;
1208	coroapi.current = coro_current;	1308	coroapi.current = coro_current;
1209		1309
1210	GCoroAPI = &coroapi;	1310	GCoroAPI = &coroapi;
1211	sv_setiv (sv, (IV)&coroapi);	1311	sv_setiv (sv, (IV)&coroapi);
1212	SvREADONLY_on (sv);	1312	SvREADONLY_on (sv);
1213	}	1313	}
…		…
1229	RETVAL = coro->prio;	1329	RETVAL = coro->prio;
1230		1330
1231	if (items > 1)	1331	if (items > 1)
1232	{	1332	{
1233	if (ix)	1333	if (ix)
1234	newprio += coro->prio;	1334	newprio = coro->prio - newprio;
1235		1335
1236	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1336	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1237	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1337	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1238		1338
1239	coro->prio = newprio;	1339	coro->prio = newprio;
1240	}	1340	}
1241	}	1341	}
		1342	OUTPUT:
		1343	RETVAL
1242		1344
1243	SV *	1345	SV *
1244	ready (SV *self)	1346	ready (SV *self)
1245	PROTOTYPE: $	1347	PROTOTYPE: $
1246	CODE:	1348	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs. Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.126 by root, Tue Dec 12 04:19:56 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC