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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.121 by root, Sat Dec 2 20:40:25 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	#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	# 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
77	/* 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
78	* 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
79	* and should be unique. */	93	* and should be unique. */
80	#define dSTACKLEVEL int stacklevel	94	#define dSTACKLEVEL int stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	95	#define STACKLEVEL ((void *)&stacklevel)
82		96
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	97	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		98
85	#if __GNUC__ >= 3	99	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	100	# define attribute(x) __attribute__(x)
		101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	102	#else
88	# define attribute(x)	103	# define attribute(x)
		104	# define BARRIER
89	#endif	105	#endif
90		106
91	#define NOINLINE attribute ((noinline))	107	#define NOINLINE attribute ((noinline))
92		108
93	#include "CoroAPI.h"	109	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		110
97	#ifdef USE_ITHREADS	111	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	112	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	113	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	114	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	115	#else
102	# define LOCK (void)0	116	# define LOCK (void)0
103	# define UNLOCK (void)0	117	# define UNLOCK (void)0
104	#endif	118	#endif
105		119
		120	/* helper storage struct for Coro::AIO */
106	struct io_state	121	struct io_state
107	{	122	{
108	int errorno;	123	int errorno;
109	I32 laststype;	124	I32 laststype;
110	int laststatval;	125	int laststatval;
…		…
123	typedef struct coro_cctx {	138	typedef struct coro_cctx {
124	struct coro_cctx *next;	139	struct coro_cctx *next;
125		140
126	/* the stack */	141	/* the stack */
127	void *sptr;	142	void *sptr;
128	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
129		144
130	/* cpu state */	145	/* cpu state */
131	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 */
132	JMPENV *top_env;	148	JMPENV *top_env;
133	coro_context cctx;	149	coro_context cctx;
134		150
135	int inuse;	151	int inuse;
136		152
…		…
138	int valgrind_id;	154	int valgrind_id;
139	#endif	155	#endif
140	} coro_cctx;	156	} coro_cctx;
141		157
142	enum {	158	enum {
143	CF_RUNNING = 0x0001, /* coroutine is running */	159	CF_RUNNING = 0x0001, /* coroutine is running */
144	CF_READY = 0x0002, /* coroutine is ready */	160	CF_READY = 0x0002, /* coroutine is ready */
145	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 */
146	};	163	};
147		164
148	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
149	struct coro {	166	struct coro {
150	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
151	coro_cctx *cctx;	168	coro_cctx *cctx;
152		169
153	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
154	AV *args;	171	AV *args;
155	int refcnt;	172	int refcnt;
156	int flags;	173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
157		175
158	/* optionally saved, might be zero */	176	/* optionally saved, might be zero */
159	AV *defav;	177	AV defav; / @_ */
160	SV *defsv;	178	SV defsv; / $_ */
161	SV *errsv;	179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
162		182
163	#define VAR(name,type) type name;	183	#define VAR(name,type) type name;
164	# include "state.h"	184	# include "state.h"
165	#undef VAR	185	#undef VAR
166		186
…		…
168	int prio;	188	int prio;
169	};	189	};
170		190
171	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
172	typedef struct coro *Coro__State_or_hashref;	192	typedef struct coro *Coro__State_or_hashref;
		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 ********************************************************/
173		209
174	static AV *	210	static AV *
175	coro_clone_padlist (CV *cv)	211	coro_clone_padlist (CV *cv)
176	{	212	{
177	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
…		…
252		288
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	291	else
256	{	292	{
257	#if 0	293	#if PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	295	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
…		…
286	av_extend (av, AvMAX (av) + 1);	322	av_extend (av, AvMAX (av) + 1);
287		323
288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289	}	325	}
290		326
		327	/ load & save, init *****************************************************/
		328
291	#define SB do {	329	#define SB do {
292	#define SE } while (0)	330	#define SE } while (0)
293		331
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	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
298		333
299	static void	334	static void
300	load_state (Coro__State c)	335	load_perl (Coro__State c)
301	{	336	{
302	#define VAR(name,type) PL_ ## name = c->name;	337	#define VAR(name,type) PL_ ## name = c->name;
303	# include "state.h"	338	# include "state.h"
304	#undef VAR	339	#undef VAR
305		340
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		344	if (c->irssv)
		345	{
		346	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		347	SvREFCNT_dec (c->irssv);
		348	else
		349	{
		350	REPLACE_SV (PL_rs, c->irssv);
		351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		352	sv_setsv (c->irssv_sv, PL_rs);
		353	}
		354	}
309		355
310	{	356	{
311	dSP;	357	dSP;
312	CV *cv;	358	CV *cv;
313		359
…		…
319	CvPADLIST (cv) = (AV *)POPs;	365	CvPADLIST (cv) = (AV *)POPs;
320	}	366	}
321		367
322	PUTBACK;	368	PUTBACK;
323	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
324	}	371	}
325		372
326	static void	373	static void
327	save_state (Coro__State c, int flags)	374	save_perl (Coro__State c)
328	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
329	{	377	{
330	dSP;	378	dSP;
331	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
332	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
333	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
335	/*	383	/*
336	* the worst thing you can imagine happens first - we have to save	384	* the worst thing you can imagine happens first - we have to save
337	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
338	*/	386	*/
339		387
		388	EXTEND (SP, 3 + 1);
340	PUSHs (Nullsv);	389	PUSHs (Nullsv);
341	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
342	for (;;)	391	for (;;)
343	{	392	{
344	while (cxix >= 0)	393	while (cxix >= 0)
…		…
350	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
351		400
352	if (CvDEPTH (cv))	401	if (CvDEPTH (cv))
353	{	402	{
354	EXTEND (SP, 3);	403	EXTEND (SP, 3);
355
356	PUSHs ((SV *)CvPADLIST (cv));	404	PUSHs ((SV *)CvPADLIST (cv));
357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
358	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
359		407
360	CvDEPTH (cv) = 0;	408	CvDEPTH (cv) = 0;
361	get_padlist (cv);	409	get_padlist (cv);
362	}	410	}
363	}	411	}
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	}	412	}
373		413
374	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
375	break;	415	break;
376		416
…		…
380	}	420	}
381		421
382	PUTBACK;	422	PUTBACK;
383	}	423	}
384		424
385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	425	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;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
388		429
389	#define VAR(name,type)c->name = PL_ ## name;	430	#define VAR(name,type)c->name = PL_ ## name;
390	# include "state.h"	431	# include "state.h"
391	#undef VAR	432	#undef VAR
392	}	433	}
…		…
395	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
396	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
397	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
398	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
399	*/	440	*/
		441	#if PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
400	static void	444	static void
401	coro_init_stacks ()	445	coro_init_stacks ()
402	{	446	{
403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
404	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
434	New(54,PL_retstack,16,OP*);	478	New(54,PL_retstack,16,OP*);
435	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
436	PL_retstack_max = 16;	480	PL_retstack_max = 16;
437	#endif	481	#endif
438	}	482	}
		483	#endif
439		484
440	/*	485	/*
441	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
442	*/	487	*/
443	static void	488	static void
444	coro_destroy_stacks ()	489	coro_destroy_stacks ()
445	{	490	{
446	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
447	{	492	{
448	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
449	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
450		496
451	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
452	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
453		500
		501	/* unwind all extra stacks */
454	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
455	}	506	}
456		507
457	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
458	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
459		510
460	while (PL_curstackinfo)	511	while (PL_curstackinfo)
461	{	512	{
462	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
463		514
464	{ /D//remove/
465	dSP;
466	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
467	PUTBACK; /* possibly superfluous */
468	}
469
470	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
471	{
472	dounwind (-1);/D//remove/
473	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
474	}
475		517
476	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
477	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
478	PL_curstackinfo = p;	520	PL_curstackinfo = p;
479	}	521	}
…		…
485	#if !PERL_VERSION_ATLEAST (5,9,0)	527	#if !PERL_VERSION_ATLEAST (5,9,0)
486	Safefree (PL_retstack);	528	Safefree (PL_retstack);
487	#endif	529	#endif
488	}	530	}
489		531
		532	/ coroutine stack handling **********************************************/
		533
490	static void	534	static void
491	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
492	{	536	{
493	/*	537	/*
494	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
…		…
496		540
497	coro_init_stacks ();	541	coro_init_stacks ();
498		542
499	PL_curcop = &PL_compiling;	543	PL_curcop = &PL_compiling;
500	PL_in_eval = EVAL_NULL;	544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
501	PL_curpm = 0;	546	PL_curpm = 0;
502	PL_localizing = 0;	547	PL_localizing = 0;
503	PL_dirty = 0;	548	PL_dirty = 0;
504	PL_restartop = 0;	549	PL_restartop = 0;
505		550
…		…
583	{	628	{
584	coro_cctx *cctx;	629	coro_cctx *cctx;
585		630
586	++cctx_count;	631	++cctx_count;
587		632
588	New (0, cctx, 1, coro_cctx);	633	Newz (0, cctx, 1, coro_cctx);
589		634
590	#if HAVE_MMAP	635	#if HAVE_MMAP
591		636
592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	637	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
593	/* mmap supposedly does allocate-on-write for us */	638	/* mmap supposedly does allocate-on-write for us */
594	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);
595		640
596	if (cctx->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
597	{
598	perror ("FATAL: unable to mmap stack for coroutine");
599	_exit (EXIT_FAILURE);
600	}	642	{
601
602	# if STACKGUARD	643	# if STACKGUARD
603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	644	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
604	# endif	645	# endif
605		646	REGISTER_STACK (
606	#else	647	cctx,
607
608	cctx->ssize = STACKSIZE * (long)sizeof (long);
609	New (0, cctx->sptr, STACKSIZE, long);
610
611	if (!cctx->sptr)
612	{
613	perror ("FATAL: unable to malloc stack for coroutine");
614	_exit (EXIT_FAILURE);
615	}
616
617	#endif
618
619	#if USE_VALGRIND
620	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
621	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	648	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
622	cctx->ssize + (char *)cctx->sptr	649	cctx->ssize + (char *)cctx->sptr
623	);	650	);
624	#endif
625		651
626	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	}
627		674
628	return cctx;	675	return cctx;
629	}	676	}
630		677
631	static void	678	static void
…		…
639	#if USE_VALGRIND	686	#if USE_VALGRIND
640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
641	#endif	688	#endif
642		689
643	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
644	munmap (cctx->sptr, cctx->ssize);	692	munmap (cctx->sptr, cctx->ssize);
645	#else	693	else
		694	#endif
646	Safefree (cctx->sptr);	695	Safefree (cctx->sptr);
647	#endif
648		696
649	Safefree (cctx);	697	Safefree (cctx);
650	}	698	}
651		699
652	static coro_cctx *	700	static coro_cctx *
…		…
686	++cctx_idle;	734	++cctx_idle;
687	cctx->next = cctx_first;	735	cctx->next = cctx_first;
688	cctx_first = cctx;	736	cctx_first = cctx;
689	}	737	}
690		738
		739	/ coroutine switching ***************************************************/
		740
691	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
692	static void NOINLINE	742	static void NOINLINE
693	transfer (struct coro prev, struct coro next, int flags)	743	transfer (struct coro prev, struct coro next)
694	{	744	{
695	dSTACKLEVEL;	745	dSTACKLEVEL;
696		746
697	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	748	if (!next)
		749	{
699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		751	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		752	}
700	else if (prev != next)	753	else if (prev != next)
701	{	754	{
702	coro_cctx *prev__cctx;	755	coro_cctx *prev__cctx;
703		756
704	if (prev->flags & CF_NEW)	757	if (prev->flags & CF_NEW)
…		…
715	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");
716		769
717	if (next->flags & CF_RUNNING)	770	if (next->flags & CF_RUNNING)
718	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");
719		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");
		775
720	prev->flags &= ~CF_RUNNING;	776	prev->flags &= ~CF_RUNNING;
721	next->flags \|= CF_RUNNING;	777	next->flags \|= CF_RUNNING;
722		778
723	LOCK;	779	LOCK;
724		780
725	if (next->flags & CF_NEW)	781	if (next->flags & CF_NEW)
726	{	782	{
727	/* need to start coroutine */	783	/* need to start coroutine */
728	next->flags &= ~CF_NEW;	784	next->flags &= ~CF_NEW;
729	/* first get rid of the old state */	785	/* first get rid of the old state */
730	SAVE (prev, -1);	786	save_perl (prev);
731	/* setup coroutine call */	787	/* setup coroutine call */
732	setup_coro (next);	788	setup_coro (next);
733	/* need a new stack */	789	/* need a new stack */
734	assert (!next->stack);	790	assert (!next->cctx);
735	}	791	}
736	else	792	else
737	{	793	{
738	/* coroutine already started */	794	/* coroutine already started */
739	SAVE (prev, flags);	795	save_perl (prev);
740	LOAD (next);	796	load_perl (next);
741	}	797	}
742		798
743	prev__cctx = prev->cctx;	799	prev__cctx = prev->cctx;
744		800
745	/* possibly "free" the cctx */	801	/* possibly "free" the cctx */
746	if (prev__cctx->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	803	{
748	/* 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 */
749	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));
750		806
751	prev->cctx = 0;	807	prev->cctx = 0;
752		808
753	cctx_put (prev__cctx);	809	cctx_put (prev__cctx);
754	prev__cctx->inuse = 0;	810	prev__cctx->inuse = 0;
…		…
767	PL_top_env = next->cctx->top_env;	823	PL_top_env = next->cctx->top_env;
768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769	}	825	}
770		826
771	free_coro_mortal ();	827	free_coro_mortal ();
772
773	UNLOCK;	828	UNLOCK;
774	}	829	}
775	}	830	}
776		831
777	struct transfer_args	832	struct transfer_args
778	{	833	{
779	struct coro prev, next;	834	struct coro prev, next;
780	int flags;
781	};	835	};
782		836
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
784		838
		839	/ high level stuff ******************************************************/
		840
785	static void	841	static int
786	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
787	{	843	{
788	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
789	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 */
790		859
791	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	861	{
793	struct coro temp;	862	struct coro temp;
		863
		864	assert (!(coro->flags & CF_RUNNING));
		865
		866	Zero (&temp, 1, struct coro);
		867	temp.save = CORO_SAVE_ALL;
794		868
795	if (coro->flags & CF_RUNNING)	869	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	870	croak ("FATAL: tried to destroy currently running coroutine");
797		871
798	SAVE ((&temp), TRANSFER_SAVE_ALL);	872	save_perl (&temp);
799	LOAD (coro);	873	load_perl (coro);
800		874
801	coro_destroy_stacks ();	875	coro_destroy_stacks ();
802		876
803	LOAD ((&temp)); /* this will get rid of defsv etc.. */	877	load_perl (&temp); /* this will get rid of defsv etc.. */
804		878
805	coro->mainstack = 0;	879	coro->mainstack = 0;
806	}	880	}
807		881
808	cctx_destroy (coro->cctx);	882	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
810	Safefree (coro);	884
		885	return 1;
811	}	886	}
812		887
813	static int	888	static int
814	coro_state_clear (pTHX_ SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
815	{	890	{
816	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
817	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
818		893
		894	if (--coro->refcnt < 0)
		895	{
819	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
820		899
821	return 0;	900	return 0;
822	}	901	}
823		902
824	static int	903	static int
…		…
831	return 0;	910	return 0;
832	}	911	}
833		912
834	static MGVTBL coro_state_vtbl = {	913	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	914	0, 0, 0, 0,
836	coro_state_clear,	915	coro_state_free,
837	0,	916	0,
838	#ifdef MGf_DUP	917	#ifdef MGf_DUP
839	coro_state_dup,	918	coro_state_dup,
840	#else	919	#else
841	# define MGf_DUP 0	920	# define MGf_DUP 0
…		…
863	assert (mg->mg_type == PERL_MAGIC_ext);	942	assert (mg->mg_type == PERL_MAGIC_ext);
864	return (struct coro *)mg->mg_ptr;	943	return (struct coro *)mg->mg_ptr;
865	}	944	}
866		945
867	static void	946	static void
868	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	947	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
869	{	948	{
870	ta->prev = SvSTATE (prev);	949	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next);	950	ta->next = SvSTATE (next_sv);
872	ta->flags = flags;
873	}	951	}
874		952
875	static void	953	static void
876	api_transfer (SV prev, SV next, int flags)	954	api_transfer (SV prev_sv, SV next_sv)
877	{	955	{
878	struct transfer_args ta;	956	struct transfer_args ta;
879		957
880	prepare_transfer (&ta, prev, next, flags);	958	prepare_transfer (&ta, prev_sv, next_sv);
881	TRANSFER (ta);	959	TRANSFER (ta);
882	}	960	}
883		961
		962	static int
		963	api_save (SV *coro_sv, int new_save)
		964	{
		965	struct coro *coro = SvSTATE (coro_sv);
		966	int old_save = coro->save;
		967
		968	if (new_save >= 0)
		969	coro->save = new_save;
		970
		971	return old_save;
		972	}
		973
884	/ Coro ******************************************************************/	974	/ Coro ******************************************************************/
885		975
886	#define PRIO_MAX 3
887	#define PRIO_HIGH 1
888	#define PRIO_NORMAL 0
889	#define PRIO_LOW -1
890	#define PRIO_IDLE -3
891	#define PRIO_MIN -4
892
893	/* for Coro.pm */
894	static SV *coro_current;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;
897
898	static void	976	static void
899	coro_enq (SV *coro_sv)	977	coro_enq (SV *coro_sv)
900	{	978	{
901	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);
902	coro_nready++;
903	}	980	}
904		981
905	static SV *	982	static SV *
906	coro_deq (int min_prio)	983	coro_deq (int min_prio)
907	{	984	{
…		…
911	if (min_prio < 0)	988	if (min_prio < 0)
912	min_prio = 0;	989	min_prio = 0;
913		990
914	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	991	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
915	if (AvFILLp (coro_ready [prio]) >= 0)	992	if (AvFILLp (coro_ready [prio]) >= 0)
916	{
917	coro_nready--;
918	return av_shift (coro_ready [prio]);	993	return av_shift (coro_ready [prio]);
919	}
920		994
921	return 0;	995	return 0;
922	}	996	}
923		997
924	static int	998	static int
…		…
932	coro = SvSTATE (coro_sv);	1006	coro = SvSTATE (coro_sv);
933		1007
934	if (coro->flags & CF_READY)	1008	if (coro->flags & CF_READY)
935	return 0;	1009	return 0;
936		1010
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;	1011	coro->flags \|= CF_READY;
943		1012
944	LOCK;	1013	LOCK;
945	coro_enq (SvREFCNT_inc (coro_sv));	1014	coro_enq (SvREFCNT_inc (coro_sv));
		1015	++coro_nready;
946	UNLOCK;	1016	UNLOCK;
947		1017
948	return 1;	1018	return 1;
949	}	1019	}
950		1020
951	static int	1021	static int
952	api_is_ready (SV *coro_sv)	1022	api_is_ready (SV *coro_sv)
953	{	1023	{
954	return !!SvSTATE (coro_sv)->flags & CF_READY;	1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);
955	}	1025	}
956		1026
957	static void	1027	static void
958	prepare_schedule (struct transfer_args *ta)	1028	prepare_schedule (struct transfer_args *ta)
959	{	1029	{
960	SV prev, next;	1030	SV prev_sv, next_sv;
961		1031
962	for (;;)	1032	for (;;)
963	{	1033	{
964	LOCK;	1034	LOCK;
965	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;
966	UNLOCK;	1067	UNLOCK;
967
968	if (next)
969	break;	1068	break;
970
971	{
972	dSP;
973
974	ENTER;
975	SAVETMPS;
976
977	PUSHMARK (SP);
978	PUTBACK;
979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
980
981	FREETMPS;
982	LEAVE;
983	}	1069	}
984	}
985
986	prev = SvRV (coro_current);
987	SvRV_set (coro_current, next);
988		1070
989	/* 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
990	LOCK;	1079	LOCK;
991	free_coro_mortal ();	1080	free_coro_mortal ();
		1081	coro_mortal = prev_sv;
992	UNLOCK;	1082	UNLOCK;
993	coro_mortal = prev;
994
995	assert (!SvROK(prev));//D
996	assert (!SvROK(next));//D
997
998	ta->prev = SvSTATE (prev);
999	ta->next = SvSTATE (next);
1000	ta->flags = TRANSFER_SAVE_ALL;
1001
1002	assert (ta->flags & CF_READY);
1003	ta->next->flags &= ~CF_READY;
1004	}	1083	}
1005		1084
1006	static void	1085	static void
1007	prepare_cede (struct transfer_args *ta)	1086	prepare_cede (struct transfer_args *ta)
1008	{	1087	{
1009	api_ready (coro_current);	1088	api_ready (coro_current);
1010
1011	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;
1012	}	1104	}
1013		1105
1014	static void	1106	static void
1015	api_schedule (void)	1107	api_schedule (void)
1016	{	1108	{
…		…
1018		1110
1019	prepare_schedule (&ta);	1111	prepare_schedule (&ta);
1020	TRANSFER (ta);	1112	TRANSFER (ta);
1021	}	1113	}
1022		1114
1023	static void	1115	static int
1024	api_cede (void)	1116	api_cede (void)
1025	{	1117	{
1026	struct transfer_args ta;	1118	struct transfer_args ta;
1027		1119
1028	prepare_cede (&ta);	1120	prepare_cede (&ta);
		1121
		1122	if (ta.prev != ta.next)
		1123	{
1029	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;
1030	}	1143	}
1031		1144
1032	MODULE = Coro::State PACKAGE = Coro::State	1145	MODULE = Coro::State PACKAGE = Coro::State
1033		1146
1034	PROTOTYPES: DISABLE	1147	PROTOTYPES: DISABLE
…		…
1040	#endif	1153	#endif
1041	BOOT_PAGESIZE;	1154	BOOT_PAGESIZE;
1042		1155
1043	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1044		1157
1045	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1046	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1047	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1160	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1161	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1162	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1048		1163
1049	main_mainstack = PL_mainstack;	1164	main_mainstack = PL_mainstack;
1050		1165
1051	coroapi.ver = CORO_API_VERSION;	1166	coroapi.ver = CORO_API_VERSION;
1052	coroapi.transfer = api_transfer;	1167	coroapi.transfer = api_transfer;
…		…
1062	HV *hv;	1177	HV *hv;
1063	int i;	1178	int i;
1064		1179
1065	Newz (0, coro, 1, struct coro);	1180	Newz (0, coro, 1, struct coro);
1066	coro->args = newAV ();	1181	coro->args = newAV ();
		1182	coro->save = CORO_SAVE_ALL;
1067	coro->flags = CF_NEW;	1183	coro->flags = CF_NEW;
1068		1184
1069	hv = newHV ();	1185	hv = newHV ();
1070	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1186	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));	1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1072		1188
1073	for (i = 1; i < items; i++)	1189	for (i = 1; i < items; i++)
1074	av_push (coro->args, newSVsv (ST (i)));	1190	av_push (coro->args, newSVsv (ST (i)));
1075	}	1191	}
1076	OUTPUT:	1192	OUTPUT:
		1193	RETVAL
		1194
		1195	int
		1196	save (SV *coro, int new_save = -1)
		1197	CODE:
		1198	RETVAL = api_save (coro, new_save);
		1199	OUTPUT:
1077	RETVAL	1200	RETVAL
1078		1201
1079	void	1202	void
1080	_set_stacklevel (...)	1203	_set_stacklevel (...)
1081	ALIAS:	1204	ALIAS:
1082	Coro::State::transfer = 1	1205	Coro::State::transfer = 1
1083	Coro::schedule = 2	1206	Coro::schedule = 2
1084	Coro::cede = 3	1207	Coro::cede = 3
		1208	Coro::cede_notself = 4
1085	CODE:	1209	CODE:
1086	{	1210	{
1087	struct transfer_args ta;	1211	struct transfer_args ta;
1088		1212
1089	switch (ix)	1213	switch (ix)
1090	{	1214	{
1091	case 0:	1215	case 0:
1092	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1216	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1093	ta.next = 0;	1217	ta.next = 0;
1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1095	break;	1218	break;
1096		1219
1097	case 1:	1220	case 1:
1098	if (items != 3)	1221	if (items != 2)
1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1100		1223
1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1224	prepare_transfer (&ta, ST (0), ST (1));
1102	break;	1225	break;
1103		1226
1104	case 2:	1227	case 2:
1105	prepare_schedule (&ta);	1228	prepare_schedule (&ta);
1106	break;	1229	break;
1107		1230
1108	case 3:	1231	case 3:
1109	prepare_cede (&ta);	1232	prepare_cede (&ta);
1110	break;	1233	break;
		1234
		1235	case 4:
		1236	if (!prepare_cede_notself (&ta))
		1237	XSRETURN_EMPTY;
		1238
		1239	break;
1111	}	1240	}
1112		1241
		1242	BARRIER;
1113	TRANSFER (ta);	1243	TRANSFER (ta);
1114	}
1115		1244
1116	void	1245	if (GIMME_V != G_VOID && ta.next != ta.prev)
1117	_clone_state_from (SV dst, SV src)	1246	XSRETURN_YES;
		1247	}
		1248
		1249	bool
		1250	_destroy (SV *coro_sv)
1118	CODE:	1251	CODE:
1119	{	1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1120	struct coro *coro_src = SvSTATE (src);	1253	OUTPUT:
1121		1254	RETVAL
1122	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1123
1124	++coro_src->refcnt;
1125	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1126	}
1127		1255
1128	void	1256	void
1129	_exit (code)	1257	_exit (code)
1130	int code	1258	int code
1131	PROTOTYPE: $	1259	PROTOTYPE: $
…		…
1168	coro_ready[i] = newAV ();	1296	coro_ready[i] = newAV ();
1169		1297
1170	{	1298	{
1171	SV *sv = perl_get_sv("Coro::API", 1);	1299	SV *sv = perl_get_sv("Coro::API", 1);
1172		1300
1173	coroapi.schedule = api_schedule;	1301	coroapi.schedule = api_schedule;
		1302	coroapi.save = api_save;
1174	coroapi.cede = api_cede;	1303	coroapi.cede = api_cede;
		1304	coroapi.cede_notself = api_cede_notself;
1175	coroapi.ready = api_ready;	1305	coroapi.ready = api_ready;
1176	coroapi.is_ready = api_is_ready;	1306	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1307	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1308	coroapi.current = coro_current;
1179		1309
1180	GCoroAPI = &coroapi;	1310	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1311	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1312	SvREADONLY_on (sv);
1183	}	1313	}
1184	}	1314	}
		1315
		1316	void
		1317	_set_current (SV *current)
		1318	PROTOTYPE: $
		1319	CODE:
		1320	SvREFCNT_dec (SvRV (coro_current));
		1321	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1322
1186	int	1323	int
1187	prio (Coro::State coro, int newprio = 0)	1324	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1325	ALIAS:
1189	nice = 1	1326	nice = 1
…		…
1192	RETVAL = coro->prio;	1329	RETVAL = coro->prio;
1193		1330
1194	if (items > 1)	1331	if (items > 1)
1195	{	1332	{
1196	if (ix)	1333	if (ix)
1197	newprio += coro->prio;	1334	newprio = coro->prio - newprio;
1198		1335
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1336	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1337	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1338
1202	coro->prio = newprio;	1339	coro->prio = newprio;
1203	}	1340	}
1204	}	1341	}
		1342	OUTPUT:
		1343	RETVAL
1205		1344
1206	SV *	1345	SV *
1207	ready (SV *self)	1346	ready (SV *self)
1208	PROTOTYPE: $	1347	PROTOTYPE: $
1209	CODE:	1348	CODE:
…		…
1225	CODE:	1364	CODE:
1226	RETVAL = coro_nready;	1365	RETVAL = coro_nready;
1227	OUTPUT:	1366	OUTPUT:
1228	RETVAL	1367	RETVAL
1229		1368
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	1369	MODULE = Coro::State PACKAGE = Coro::AIO
1238		1370
1239	SV *	1371	SV *
1240	_get_state ()	1372	_get_state ()
1241	CODE:	1373	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.121 by root, Sat Dec 2 20:40:25 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 1.121 by root, Sat Dec 2 20:40:25 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC