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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.117 by root, Fri Dec 1 19:41:06 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	#include <stdio.h>	9	#include <stdio.h>
44	#include <errno.h>	10	#include <errno.h>
45		11	#include <assert.h>
46	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
47	# undef STACKGUARD
48	#endif
49
50	#ifndef STACKGUARD
51	# define STACKGUARD 0
52	#endif
53		12
54	#ifdef HAVE_MMAP	13	#ifdef HAVE_MMAP
55	# include <unistd.h>	14	# include <unistd.h>
56	# include <sys/mman.h>	15	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	16	# ifndef MAP_ANONYMOUS
…		…
72	#else	31	#else
73	# define PAGESIZE 0	32	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	33	# define BOOT_PAGESIZE (void)0
75	#endif	34	#endif
76		35
		36	#if USE_VALGRIND
		37	# include <valgrind/valgrind.h>
		38	#endif
		39
		40	/* the maximum number of idle cctx that will be pooled */
		41	#define MAX_IDLE_CCTX 8
		42
		43	#define PERL_VERSION_ATLEAST(a,b,c) \
		44	(PERL_REVISION > (a) \
		45	\|\| (PERL_REVISION == (a) \
		46	&& (PERL_VERSION > (b) \
		47	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		48
		49	#if !PERL_VERSION_ATLEAST (5,6,0)
		50	# ifndef PL_ppaddr
		51	# define PL_ppaddr ppaddr
		52	# endif
		53	# ifndef call_sv
		54	# define call_sv perl_call_sv
		55	# endif
		56	# ifndef get_sv
		57	# define get_sv perl_get_sv
		58	# endif
		59	# ifndef get_cv
		60	# define get_cv perl_get_cv
		61	# endif
		62	# ifndef IS_PADGV
		63	# define IS_PADGV(v) 0
		64	# endif
		65	# ifndef IS_PADCONST
		66	# define IS_PADCONST(v) 0
		67	# endif
		68	#endif
		69
		70	/* 5.8.7 */
		71	#ifndef SvRV_set
		72	# define SvRV_set(s,v) SvRV(s) = (v)
		73	#endif
		74
		75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		76	# undef STACKGUARD
		77	#endif
		78
		79	#ifndef STACKGUARD
		80	# define STACKGUARD 0
		81	#endif
		82
		83	/* prefer perl internal functions over our own? */
		84	#ifndef PREFER_PERL_FUNCTIONS
		85	# define PREFER_PERL_FUNCTIONS 0
		86	#endif
		87
77	/* The next macro should declare a variable stacklevel that contains and approximation	88	/* The next macro should declare a variable stacklevel that contains and approximation
78	* to the current C stack pointer. Its property is that it changes with each call	89	* to the current C stack pointer. Its property is that it changes with each call
79	* and should be unique. */	90	* and should be unique. */
80	#define dSTACKLEVEL int stacklevel	91	#define dSTACKLEVEL int stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	92	#define STACKLEVEL ((void *)&stacklevel)
82		93
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	94	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		95
85	#if __GNUC__ >= 3	96	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	97	# define attribute(x) __attribute__(x)
		98	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	99	#else
88	# define attribute(x)	100	# define attribute(x)
		101	# define BARRIER
89	#endif	102	#endif
90		103
91	#define NOINLINE attribute ((noinline))	104	#define NOINLINE attribute ((noinline))
92		105
93	#include "CoroAPI.h"	106	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		107
97	#ifdef USE_ITHREADS	108	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	109	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	110	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	111	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	112	#else
102	# define LOCK (void)0	113	# define LOCK (void)0
103	# define UNLOCK (void)0	114	# define UNLOCK (void)0
104	#endif	115	#endif
105		116
		117	/* helper storage struct for Coro::AIO */
		118	struct io_state
		119	{
		120	int errorno;
		121	I32 laststype;
		122	int laststatval;
		123	Stat_t statcache;
		124	};
		125
106	static struct CoroAPI coroapi;	126	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	127	static AV main_mainstack; / used to differentiate between $main and others */
108	static HV coro_state_stash, coro_stash;	128	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	129	static SV coro_mortal; / will be freed after next transfer */
110		130
…		…
118	/* the stack */	138	/* the stack */
119	void *sptr;	139	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	140	long ssize; /* positive == mmap, otherwise malloc */
121		141
122	/* cpu state */	142	/* cpu state */
123	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 */
124	JMPENV *top_env;	145	JMPENV *top_env;
125	coro_context cctx;	146	coro_context cctx;
126		147
127	int inuse;	148	int inuse;
128		149
…		…
130	int valgrind_id;	151	int valgrind_id;
131	#endif	152	#endif
132	} coro_cctx;	153	} coro_cctx;
133		154
134	enum {	155	enum {
135	CF_RUNNING = 0x0001, /* coroutine is running */	156	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY = 0x0002, /* coroutine is ready */	157	CF_READY = 0x0002, /* coroutine is ready */
137	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 */
138	};	160	};
139		161
140	/* this is a structure representing a perl-level coroutine */	162	/* this is a structure representing a perl-level coroutine */
141	struct coro {	163	struct coro {
142	/* the c coroutine allocated to this perl coroutine, if any */	164	/* the c coroutine allocated to this perl coroutine, if any */
143	coro_cctx *cctx;	165	coro_cctx *cctx;
144		166
145	/* data associated with this coroutine (initial args) */	167	/* data associated with this coroutine (initial args) */
146	AV *args;	168	AV *args;
147	int refcnt;	169	int refcnt;
148	int flags;	170	int save; /* CORO_SAVE flags */
		171	int flags; /* CF_ flags */
149		172
150	/* optionally saved, might be zero */	173	/* optionally saved, might be zero */
151	AV *defav;	174	AV defav; / @_ */
152	SV *defsv;	175	SV defsv; / $_ */
153	SV *errsv;	176	SV errsv; / $@ */
		177	SV irssv; / $/ */
		178	SV irssv_sv; / real $/ cache */
154		179
155	#define VAR(name,type) type name;	180	#define VAR(name,type) type name;
156	# include "state.h"	181	# include "state.h"
157	#undef VAR	182	#undef VAR
158		183
…		…
160	int prio;	185	int prio;
161	};	186	};
162		187
163	typedef struct coro *Coro__State;	188	typedef struct coro *Coro__State;
164	typedef struct coro *Coro__State_or_hashref;	189	typedef struct coro *Coro__State_or_hashref;
		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 ********************************************************/
165		206
166	static AV *	207	static AV *
167	coro_clone_padlist (CV *cv)	208	coro_clone_padlist (CV *cv)
168	{	209	{
169	AV *padlist = CvPADLIST (cv);	210	AV *padlist = CvPADLIST (cv);
…		…
244		285
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	286	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	287	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	288	else
248	{	289	{
249	#if 0	290	#if PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	291	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	292	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	293	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	294	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	295	SvREFCNT_dec (cp);
…		…
278	av_extend (av, AvMAX (av) + 1);	319	av_extend (av, AvMAX (av) + 1);
279		320
280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	321	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281	}	322	}
282		323
		324	/ load & save, init *****************************************************/
		325
283	#define SB do {	326	#define SB do {
284	#define SE } while (0)	327	#define SE } while (0)
285		328
286	#define LOAD(state) load_state ((state))
287	#define SAVE(state,flags) save_state ((state),(flags))
288
289	#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
290		330
291	static void	331	static void
292	load_state (Coro__State c)	332	load_perl (Coro__State c)
293	{	333	{
294	#define VAR(name,type) PL_ ## name = c->name;	334	#define VAR(name,type) PL_ ## name = c->name;
295	# include "state.h"	335	# include "state.h"
296	#undef VAR	336	#undef VAR
297		337
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	338	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	339	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	340	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		341	if (c->irssv)
		342	{
		343	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		344	SvREFCNT_dec (c->irssv);
		345	else
		346	{
		347	REPLACE_SV (PL_rs, c->irssv);
		348	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		349	sv_setsv (c->irssv_sv, PL_rs);
		350	}
		351	}
301		352
302	{	353	{
303	dSP;	354	dSP;
304	CV *cv;	355	CV *cv;
305		356
…		…
314	PUTBACK;	365	PUTBACK;
315	}	366	}
316	}	367	}
317		368
318	static void	369	static void
319	save_state (Coro__State c, int flags)	370	save_perl (Coro__State c)
320	{	371	{
321	{	372	{
322	dSP;	373	dSP;
323	I32 cxix = cxstack_ix;	374	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	375	PERL_CONTEXT *ccstk = cxstack;
…		…
327	/*	378	/*
328	* 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
329	* (and reinitialize) all cv's in the whole callchain :(	380	* (and reinitialize) all cv's in the whole callchain :(
330	*/	381	*/
331		382
		383	EXTEND (SP, 3 + 1);
332	PUSHs (Nullsv);	384	PUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	385	/* this loop was inspired by pp_caller */
334	for (;;)	386	for (;;)
335	{	387	{
336	while (cxix >= 0)	388	while (cxix >= 0)
…		…
342	CV *cv = cx->blk_sub.cv;	394	CV *cv = cx->blk_sub.cv;
343		395
344	if (CvDEPTH (cv))	396	if (CvDEPTH (cv))
345	{	397	{
346	EXTEND (SP, 3);	398	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	399	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	400	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	401	PUSHs ((SV *)cv);
351		402
352	CvDEPTH (cv) = 0;	403	CvDEPTH (cv) = 0;
353	get_padlist (cv);	404	get_padlist (cv);
354	}	405	}
355	}	406	}
356	#ifdef CXt_FORMAT
357	else if (CxTYPE (cx) == CXt_FORMAT)
358	{
359	/* I never used formats, so how should I know how these are implemented? */
360	/* my bold guess is as a simple, plain sub... */
361	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
362	}
363	#endif
364	}	407	}
365		408
366	if (top_si->si_type == PERLSI_MAIN)	409	if (top_si->si_type == PERLSI_MAIN)
367	break;	410	break;
368		411
…		…
372	}	415	}
373		416
374	PUTBACK;	417	PUTBACK;
375	}	418	}
376		419
377	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	420	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	421	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
379	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	422	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		423	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
380		424
381	#define VAR(name,type)c->name = PL_ ## name;	425	#define VAR(name,type)c->name = PL_ ## name;
382	# include "state.h"	426	# include "state.h"
383	#undef VAR	427	#undef VAR
384	}	428	}
…		…
387	* allocate various perl stacks. This is an exact copy	431	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	432	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	433	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	434	* not usually need a lot of stackspace.
391	*/	435	*/
		436	#if PREFER_PERL_FUNCTIONS
		437	# define coro_init_stacks init_stacks
		438	#else
392	static void	439	static void
393	coro_init_stacks ()	440	coro_init_stacks ()
394	{	441	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	442	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
396	PL_curstackinfo->si_type = PERLSI_MAIN;	443	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
426	New(54,PL_retstack,16,OP*);	473	New(54,PL_retstack,16,OP*);
427	PL_retstack_ix = 0;	474	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	475	PL_retstack_max = 16;
429	#endif	476	#endif
430	}	477	}
		478	#endif
431		479
432	/*	480	/*
433	* destroy the stacks, the callchain etc...	481	* destroy the stacks, the callchain etc...
434	*/	482	*/
435	static void	483	static void
436	coro_destroy_stacks ()	484	coro_destroy_stacks ()
437	{	485	{
438	if (!IN_DESTRUCT)	486	if (!IN_DESTRUCT)
439	{	487	{
440	/* is this ugly, I ask? */	488	/* restore all saved variables and stuff */
441	LEAVE_SCOPE (0);	489	LEAVE_SCOPE (0);
		490	assert (PL_tmps_floor == -1);
442		491
443	/* sure it is, but more important: is it correct?? :/ */	492	/* free all temporaries */
444	FREETMPS;	493	FREETMPS;
		494	assert (PL_tmps_ix == -1);
445		495
		496	/* unwind all extra stacks */
446	/POPSTACK_TO (PL_mainstack);//D//use/	497	POPSTACK_TO (PL_mainstack);
		498
		499	/* unwind main stack */
		500	dounwind (-1);
447	}	501	}
448		502
449	while (PL_curstackinfo->si_next)	503	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	504	PL_curstackinfo = PL_curstackinfo->si_next;
451		505
452	while (PL_curstackinfo)	506	while (PL_curstackinfo)
453	{	507	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	508	PERL_SI *p = PL_curstackinfo->si_prev;
455		509
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	510	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	511	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		512
468	Safefree (PL_curstackinfo->si_cxstack);	513	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	514	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	515	PL_curstackinfo = p;
471	}	516	}
…		…
477	#if !PERL_VERSION_ATLEAST (5,9,0)	522	#if !PERL_VERSION_ATLEAST (5,9,0)
478	Safefree (PL_retstack);	523	Safefree (PL_retstack);
479	#endif	524	#endif
480	}	525	}
481		526
		527	/ coroutine stack handling **********************************************/
		528
482	static void	529	static void
483	setup_coro (struct coro *coro)	530	setup_coro (struct coro *coro)
484	{	531	{
485	/*	532	/*
486	* emulate part of the perl startup here.	533	* emulate part of the perl startup here.
…		…
497		544
498	{	545	{
499	dSP;	546	dSP;
500	LOGOP myop;	547	LOGOP myop;
501		548
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));	549	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;	550	GvAV (PL_defgv) = coro->args; coro->args = 0;
507		551
508	Zero (&myop, 1, LOGOP);	552	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	553	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	554	myop.op_flags = OPf_WANT_VOID;
511		555
512	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);	556	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	557	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;	558	PUTBACK;
		559	PL_op = (OP *)&myop;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	560	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	561	SPAGAIN;
519	}	562	}
520		563
521	ENTER; /* necessary e.g. for dounwind */	564	ENTER; /* necessary e.g. for dounwind */
…		…
529	SvREFCNT_dec (coro_mortal);	572	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	573	coro_mortal = 0;
531	}	574	}
532	}	575	}
533		576
		577	/* inject a fake call to Coro::State::_cctx_init into the execution */
534	static void NOINLINE	578	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	579	prepare_cctx (coro_cctx *cctx)
536	{	580	{
537	dSP;	581	dSP;
538	LOGOP myop;	582	LOGOP myop;
539		583
540	Zero (&myop, 1, LOGOP);	584	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	585	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	586	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		587
546	PUSHMARK (SP);	588	PUSHMARK (SP);
		589	EXTEND (SP, 2);
		590	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	591	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	592	PUTBACK;
		593	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	594	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	595	SPAGAIN;
551	}	596	}
552		597
553	static void	598	static void
554	coro_run (void *arg)	599	coro_run (void *arg)
555	{	600	{
556	/* coro_run is the alternative epilogue of transfer() */	601	/* coro_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	602	UNLOCK;
558		603
559	/*	604	/*
560	* this is a _very_ stripped down perl interpreter ;)	605	* this is a _very_ stripped down perl interpreter ;)
561	*/	606	*/
…		…
563		608
564	/* inject call to cctx_init */	609	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);	610	prepare_cctx ((coro_cctx *)arg);
566		611
567	/* somebody will hit me for both perl_run and PL_restartop */	612	/* somebody will hit me for both perl_run and PL_restartop */
		613	PL_restartop = PL_op;
568	perl_run (PL_curinterp);	614	perl_run (PL_curinterp);
569		615
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	616	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();	617	abort ();
572	}	618	}
…		…
576	{	622	{
577	coro_cctx *cctx;	623	coro_cctx *cctx;
578		624
579	++cctx_count;	625	++cctx_count;
580		626
581	New (0, cctx, 1, coro_cctx);	627	Newz (0, cctx, 1, coro_cctx);
582		628
583	#if HAVE_MMAP	629	#if HAVE_MMAP
584		630
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	631	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	632	/* mmap supposedly does allocate-on-write for us */
587	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	633	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		634
589	if (cctx->sptr == (void *)-1)	635	if (cctx->sptr == (void *)-1)
590	{	636	{
591	perror ("FATAL: unable to mmap stack for coroutine");	637	perror ("FATAL: unable to mmap stack for coroutine");
…		…
679	++cctx_idle;	725	++cctx_idle;
680	cctx->next = cctx_first;	726	cctx->next = cctx_first;
681	cctx_first = cctx;	727	cctx_first = cctx;
682	}	728	}
683		729
		730	/ coroutine switching ***************************************************/
		731
684	/* never call directly, always through the coro_state_transfer global variable */	732	/* never call directly, always through the coro_state_transfer global variable */
685	static void NOINLINE	733	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	734	transfer (struct coro prev, struct coro next)
687	{	735	{
688	dSTACKLEVEL;	736	dSTACKLEVEL;
689		737
690	/* sometimes transfer is only called to set idle_sp */	738	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	739	if (!next)
		740	{
692	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	741	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		742	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		743	}
693	else if (prev != next)	744	else if (prev != next)
694	{	745	{
695	coro_cctx *prev__cctx;	746	coro_cctx *prev__cctx;
696		747
697	if (prev->flags & CF_NEW)	748	if (prev->flags & CF_NEW)
…		…
708	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");
709		760
710	if (next->flags & CF_RUNNING)	761	if (next->flags & CF_RUNNING)
711	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");
712		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");
		766
713	prev->flags &= ~CF_RUNNING;	767	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	768	next->flags \|= CF_RUNNING;
715		769
716	LOCK;	770	LOCK;
717		771
718	if (next->mainstack)	772	if (next->flags & CF_NEW)
719	{	773	{
720	/* coroutine already started */	774	/* need to start coroutine */
721	SAVE (prev, flags);	775	next->flags &= ~CF_NEW;
722	LOAD (next);	776	/* first get rid of the old state */
		777	save_perl (prev);
		778	/* setup coroutine call */
		779	setup_coro (next);
		780	/* need a new stack */
		781	assert (!next->cctx);
723	}	782	}
724	else	783	else
725	{	784	{
726	/* need to start coroutine */	785	/* coroutine already started */
727	assert (next->flags & CF_NEW);	786	save_perl (prev);
728	next->flags &= ~CF_NEW;	787	load_perl (next);
729	/* first get rid of the old state */
730	SAVE (prev, -1);
731	/* setup coroutine call */
732	setup_coro (next);
733	/* need a new stack */
734	assert (!next->stack);
735	}	788	}
736		789
737	prev__cctx = prev->cctx;	790	prev__cctx = prev->cctx;
738		791
739	/* possibly "free" the cctx */	792	/* possibly "free" the cctx */
740	if (prev__cctx->idle_sp == STACKLEVEL && 0)	793	if (prev__cctx->idle_sp == STACKLEVEL)
741	{	794	{
742	/* 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 */
743	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));
744		797
745	prev->cctx = 0;	798	prev->cctx = 0;
746		799
747	cctx_put (prev__cctx);	800	cctx_put (prev__cctx);
748	prev__cctx->inuse = 0;	801	prev__cctx->inuse = 0;
…		…
761	PL_top_env = next->cctx->top_env;	814	PL_top_env = next->cctx->top_env;
762	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	815	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
763	}	816	}
764		817
765	free_coro_mortal ();	818	free_coro_mortal ();
766
767	UNLOCK;	819	UNLOCK;
768	}	820	}
769	}	821	}
770		822
771	struct transfer_args	823	struct transfer_args
772	{	824	{
773	struct coro prev, next;	825	struct coro prev, next;
774	int flags;
775	};	826	};
776		827
777	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	828	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
778		829
		830	/ high level stuff ******************************************************/
		831
779	static void	832	static int
780	coro_state_destroy (struct coro *coro)	833	coro_state_destroy (struct coro *coro)
781	{	834	{
782	if (coro->refcnt--)	835	if (coro->flags & CF_DESTROYED)
783	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 */
784		850
785	if (coro->mainstack && coro->mainstack != main_mainstack)	851	if (coro->mainstack && coro->mainstack != main_mainstack)
786	{	852	{
		853	assert (!(coro->flags & CF_RUNNING));
		854
787	struct coro temp;	855	struct coro temp;
		856	Zero (&temp, 1, struct coro);
		857	temp.save = CORO_SAVE_ALL;
788		858
789	if (coro->flags & CF_RUNNING)	859	if (coro->flags & CF_RUNNING)
790	croak ("FATAL: tried to destroy currently running coroutine");	860	croak ("FATAL: tried to destroy currently running coroutine");
791		861
792	SAVE ((&temp), TRANSFER_SAVE_ALL);	862	save_perl (&temp);
793	LOAD (coro);	863	load_perl (coro);
794		864
795	coro_destroy_stacks ();	865	coro_destroy_stacks ();
796		866
797	LOAD ((&temp)); /* this will get rid of defsv etc.. */	867	load_perl (&temp); /* this will get rid of defsv etc.. */
798		868
799	coro->mainstack = 0;	869	coro->mainstack = 0;
800	}	870	}
801		871
802	cctx_destroy (coro->cctx);	872	cctx_destroy (coro->cctx);
803	SvREFCNT_dec (coro->args);	873	SvREFCNT_dec (coro->args);
804	Safefree (coro);	874
		875	return 1;
805	}	876	}
806		877
807	static int	878	static int
808	coro_state_clear (pTHX_ SV sv, MAGIC mg)	879	coro_state_free (pTHX_ SV sv, MAGIC mg)
809	{	880	{
810	struct coro coro = (struct coro )mg->mg_ptr;	881	struct coro coro = (struct coro )mg->mg_ptr;
811	mg->mg_ptr = 0;	882	mg->mg_ptr = 0;
812		883
		884	if (--coro->refcnt < 0)
		885	{
813	coro_state_destroy (coro);	886	coro_state_destroy (coro);
		887	Safefree (coro);
		888	}
814		889
815	return 0;	890	return 0;
816	}	891	}
817		892
818	static int	893	static int
…		…
825	return 0;	900	return 0;
826	}	901	}
827		902
828	static MGVTBL coro_state_vtbl = {	903	static MGVTBL coro_state_vtbl = {
829	0, 0, 0, 0,	904	0, 0, 0, 0,
830	coro_state_clear,	905	coro_state_free,
831	0,	906	0,
832	#ifdef MGf_DUP	907	#ifdef MGf_DUP
833	coro_state_dup,	908	coro_state_dup,
834	#else	909	#else
835	# define MGf_DUP 0	910	# define MGf_DUP 0
…		…
857	assert (mg->mg_type == PERL_MAGIC_ext);	932	assert (mg->mg_type == PERL_MAGIC_ext);
858	return (struct coro *)mg->mg_ptr;	933	return (struct coro *)mg->mg_ptr;
859	}	934	}
860		935
861	static void	936	static void
862	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	937	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
863	{	938	{
864	ta->prev = SvSTATE (prev);	939	ta->prev = SvSTATE (prev_sv);
865	ta->next = SvSTATE (next);	940	ta->next = SvSTATE (next_sv);
866	ta->flags = flags;
867	}	941	}
868		942
869	static void	943	static void
870	api_transfer (SV prev, SV next, int flags)	944	api_transfer (SV prev_sv, SV next_sv)
871	{	945	{
872	struct transfer_args ta;	946	struct transfer_args ta;
873		947
874	prepare_transfer (&ta, prev, next, flags);	948	prepare_transfer (&ta, prev_sv, next_sv);
875	TRANSFER (ta);	949	TRANSFER (ta);
876	}	950	}
877		951
		952	static int
		953	api_save (SV *coro_sv, int new_save)
		954	{
		955	struct coro *coro = SvSTATE (coro_sv);
		956	int old_save = coro->save;
		957
		958	if (new_save >= 0)
		959	coro->save = new_save;
		960
		961	return old_save;
		962	}
		963
878	/ Coro ******************************************************************/	964	/ Coro ******************************************************************/
879		965
880	#define PRIO_MAX 3
881	#define PRIO_HIGH 1
882	#define PRIO_NORMAL 0
883	#define PRIO_LOW -1
884	#define PRIO_IDLE -3
885	#define PRIO_MIN -4
886
887	/* for Coro.pm */
888	static SV *coro_current;
889	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
890	static int coro_nready;
891
892	static void	966	static void
893	coro_enq (SV *coro_sv)	967	coro_enq (SV *coro_sv)
894	{	968	{
895	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);
896	coro_nready++;
897	}	970	}
898		971
899	static SV *	972	static SV *
900	coro_deq (int min_prio)	973	coro_deq (int min_prio)
901	{	974	{
…		…
905	if (min_prio < 0)	978	if (min_prio < 0)
906	min_prio = 0;	979	min_prio = 0;
907		980
908	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	981	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
909	if (AvFILLp (coro_ready [prio]) >= 0)	982	if (AvFILLp (coro_ready [prio]) >= 0)
910	{
911	coro_nready--;
912	return av_shift (coro_ready [prio]);	983	return av_shift (coro_ready [prio]);
913	}
914		984
915	return 0;	985	return 0;
916	}	986	}
917		987
918	static int	988	static int
…		…
926	coro = SvSTATE (coro_sv);	996	coro = SvSTATE (coro_sv);
927		997
928	if (coro->flags & CF_READY)	998	if (coro->flags & CF_READY)
929	return 0;	999	return 0;
930		1000
931	#if 0 /* this is actually harmless */
932	if (coro->flags & CF_RUNNING)
933	croak ("Coro::ready called on currently running coroutine");
934	#endif
935
936	coro->flags \|= CF_READY;	1001	coro->flags \|= CF_READY;
937		1002
938	LOCK;	1003	LOCK;
939	coro_enq (SvREFCNT_inc (coro_sv));	1004	coro_enq (SvREFCNT_inc (coro_sv));
		1005	++coro_nready;
940	UNLOCK;	1006	UNLOCK;
941		1007
942	return 1;	1008	return 1;
943	}	1009	}
944		1010
945	static int	1011	static int
946	api_is_ready (SV *coro_sv)	1012	api_is_ready (SV *coro_sv)
947	{	1013	{
948	return !!SvSTATE (coro_sv)->flags & CF_READY;	1014	return !!(SvSTATE (coro_sv)->flags & CF_READY);
949	}	1015	}
950		1016
951	static void	1017	static void
952	prepare_schedule (struct transfer_args *ta)	1018	prepare_schedule (struct transfer_args *ta)
953	{	1019	{
954	SV prev, next;	1020	SV prev_sv, next_sv;
955		1021
956	for (;;)	1022	for (;;)
957	{	1023	{
958	LOCK;	1024	LOCK;
959	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;
960	UNLOCK;	1057	UNLOCK;
961
962	if (next)
963	break;	1058	break;
964
965	{
966	dSP;
967
968	ENTER;
969	SAVETMPS;
970
971	PUSHMARK (SP);
972	PUTBACK;
973	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
974
975	FREETMPS;
976	LEAVE;
977	}	1059	}
978	}
979
980	prev = SvRV (coro_current);
981	SvRV_set (coro_current, next);
982		1060
983	/* 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
984	LOCK;	1069	LOCK;
985	free_coro_mortal ();	1070	free_coro_mortal ();
		1071	coro_mortal = prev_sv;
986	UNLOCK;	1072	UNLOCK;
987	coro_mortal = prev;
988
989	assert (!SvROK(prev));//D
990	assert (!SvROK(next));//D
991
992	ta->prev = SvSTATE (prev);
993	ta->next = SvSTATE (next);
994	ta->flags = TRANSFER_SAVE_ALL;
995
996	assert (ta->flags & CF_READY);
997	ta->next->flags &= ~CF_READY;
998	}	1073	}
999		1074
1000	static void	1075	static void
1001	prepare_cede (struct transfer_args *ta)	1076	prepare_cede (struct transfer_args *ta)
1002	{	1077	{
1003	api_ready (coro_current);	1078	api_ready (coro_current);
1004
1005	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;
1006	}	1094	}
1007		1095
1008	static void	1096	static void
1009	api_schedule (void)	1097	api_schedule (void)
1010	{	1098	{
…		…
1012		1100
1013	prepare_schedule (&ta);	1101	prepare_schedule (&ta);
1014	TRANSFER (ta);	1102	TRANSFER (ta);
1015	}	1103	}
1016		1104
1017	static void	1105	static int
1018	api_cede (void)	1106	api_cede (void)
1019	{	1107	{
1020	struct transfer_args ta;	1108	struct transfer_args ta;
1021		1109
1022	prepare_cede (&ta);	1110	prepare_cede (&ta);
		1111
		1112	if (ta.prev != ta.next)
		1113	{
1023	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;
1024	}	1133	}
1025		1134
1026	MODULE = Coro::State PACKAGE = Coro::State	1135	MODULE = Coro::State PACKAGE = Coro::State
1027		1136
1028	PROTOTYPES: DISABLE	1137	PROTOTYPES: DISABLE
…		…
1034	#endif	1143	#endif
1035	BOOT_PAGESIZE;	1144	BOOT_PAGESIZE;
1036		1145
1037	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1146	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1038		1147
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1148	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1040	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1149	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1041	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1150	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1151	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1152	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1042		1153
1043	main_mainstack = PL_mainstack;	1154	main_mainstack = PL_mainstack;
1044		1155
1045	coroapi.ver = CORO_API_VERSION;	1156	coroapi.ver = CORO_API_VERSION;
1046	coroapi.transfer = api_transfer;	1157	coroapi.transfer = api_transfer;
…		…
1056	HV *hv;	1167	HV *hv;
1057	int i;	1168	int i;
1058		1169
1059	Newz (0, coro, 1, struct coro);	1170	Newz (0, coro, 1, struct coro);
1060	coro->args = newAV ();	1171	coro->args = newAV ();
		1172	coro->save = CORO_SAVE_ALL;
1061	coro->flags = CF_NEW;	1173	coro->flags = CF_NEW;
1062		1174
1063	hv = newHV ();	1175	hv = newHV ();
1064	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1176	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1065	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1177	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1066		1178
1067	for (i = 1; i < items; i++)	1179	for (i = 1; i < items; i++)
1068	av_push (coro->args, newSVsv (ST (i)));	1180	av_push (coro->args, newSVsv (ST (i)));
1069	}	1181	}
1070	OUTPUT:	1182	OUTPUT:
		1183	RETVAL
		1184
		1185	int
		1186	save (SV *coro, int new_save = -1)
		1187	CODE:
		1188	RETVAL = api_save (coro, new_save);
		1189	OUTPUT:
1071	RETVAL	1190	RETVAL
1072		1191
1073	void	1192	void
1074	_set_stacklevel (...)	1193	_set_stacklevel (...)
1075	ALIAS:	1194	ALIAS:
1076	Coro::State::transfer = 1	1195	Coro::State::transfer = 1
1077	Coro::schedule = 2	1196	Coro::schedule = 2
1078	Coro::cede = 3	1197	Coro::cede = 3
1079	Coro::Cont::yield = 4	1198	Coro::cede_notself = 4
1080	CODE:	1199	CODE:
1081	{	1200	{
1082	struct transfer_args ta;	1201	struct transfer_args ta;
1083		1202
1084	switch (ix)	1203	switch (ix)
1085	{	1204	{
1086	case 0:	1205	case 0:
1087	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1206	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1088	ta.next = 0;	1207	ta.next = 0;
1089	ta.flags = TRANSFER_SET_STACKLEVEL;
1090	break;	1208	break;
1091		1209
1092	case 1:	1210	case 1:
1093	if (items != 3)	1211	if (items != 2)
1094	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1212	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1095		1213
1096	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1214	prepare_transfer (&ta, ST (0), ST (1));
1097	break;	1215	break;
1098		1216
1099	case 2:	1217	case 2:
1100	prepare_schedule (&ta);	1218	prepare_schedule (&ta);
1101	break;	1219	break;
…		…
1103	case 3:	1221	case 3:
1104	prepare_cede (&ta);	1222	prepare_cede (&ta);
1105	break;	1223	break;
1106		1224
1107	case 4:	1225	case 4:
1108	{	1226	if (!prepare_cede_notself (&ta))
1109	SV *yieldstack;	1227	XSRETURN_EMPTY;
1110	SV *sv;
1111	AV *defav = GvAV (PL_defgv);
1112		1228
1113	yieldstack = *hv_fetch (
1114	(HV *)SvRV (coro_current),
1115	"yieldstack", sizeof ("yieldstack") - 1,
1116	0
1117	);
1118
1119	/* set up @_ -- ugly */
1120	av_clear (defav);
1121	av_fill (defav, items - 1);
1122	while (items--)
1123	av_store (defav, items, SvREFCNT_inc (ST(items)));
1124
1125	sv = av_pop ((AV *)SvRV (yieldstack));
1126	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1127	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1128	ta.flags = 0;
1129	SvREFCNT_dec (sv);
1130	}
1131	break;	1229	break;
1132
1133	}	1230	}
1134		1231
		1232	BARRIER;
1135	TRANSFER (ta);	1233	TRANSFER (ta);
1136	}
1137		1234
1138	void	1235	if (GIMME_V != G_VOID && ta.next != ta.prev)
1139	_clone_state_from (SV dst, SV src)	1236	XSRETURN_YES;
		1237	}
		1238
		1239	bool
		1240	_destroy (SV *coro_sv)
1140	CODE:	1241	CODE:
1141	{	1242	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1142	struct coro *coro_src = SvSTATE (src);	1243	OUTPUT:
1143		1244	RETVAL
1144	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1145
1146	++coro_src->refcnt;
1147	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1148	}
1149		1245
1150	void	1246	void
1151	_exit (code)	1247	_exit (code)
1152	int code	1248	int code
1153	PROTOTYPE: $	1249	PROTOTYPE: $
…		…
1190	coro_ready[i] = newAV ();	1286	coro_ready[i] = newAV ();
1191		1287
1192	{	1288	{
1193	SV *sv = perl_get_sv("Coro::API", 1);	1289	SV *sv = perl_get_sv("Coro::API", 1);
1194		1290
1195	coroapi.schedule = api_schedule;	1291	coroapi.schedule = api_schedule;
		1292	coroapi.save = api_save;
1196	coroapi.cede = api_cede;	1293	coroapi.cede = api_cede;
		1294	coroapi.cede_notself = api_cede_notself;
1197	coroapi.ready = api_ready;	1295	coroapi.ready = api_ready;
1198	coroapi.is_ready = api_is_ready;	1296	coroapi.is_ready = api_is_ready;
1199	coroapi.nready = &coro_nready;	1297	coroapi.nready = &coro_nready;
1200	coroapi.current = coro_current;	1298	coroapi.current = coro_current;
1201		1299
1202	GCoroAPI = &coroapi;	1300	GCoroAPI = &coroapi;
1203	sv_setiv (sv, (IV)&coroapi);	1301	sv_setiv (sv, (IV)&coroapi);
1204	SvREADONLY_on (sv);	1302	SvREADONLY_on (sv);
1205	}	1303	}
1206	}	1304	}
		1305
		1306	void
		1307	_set_current (SV *current)
		1308	PROTOTYPE: $
		1309	CODE:
		1310	SvREFCNT_dec (SvRV (coro_current));
		1311	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1207		1312
1208	int	1313	int
1209	prio (Coro::State coro, int newprio = 0)	1314	prio (Coro::State coro, int newprio = 0)
1210	ALIAS:	1315	ALIAS:
1211	nice = 1	1316	nice = 1
…		…
1214	RETVAL = coro->prio;	1319	RETVAL = coro->prio;
1215		1320
1216	if (items > 1)	1321	if (items > 1)
1217	{	1322	{
1218	if (ix)	1323	if (ix)
1219	newprio += coro->prio;	1324	newprio = coro->prio - newprio;
1220		1325
1221	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1326	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1222	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1327	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1223		1328
1224	coro->prio = newprio;	1329	coro->prio = newprio;
1225	}	1330	}
1226	}	1331	}
		1332	OUTPUT:
		1333	RETVAL
1227		1334
1228	SV *	1335	SV *
1229	ready (SV *self)	1336	ready (SV *self)
1230	PROTOTYPE: $	1337	PROTOTYPE: $
1231	CODE:	1338	CODE:
…		…
1247	CODE:	1354	CODE:
1248	RETVAL = coro_nready;	1355	RETVAL = coro_nready;
1249	OUTPUT:	1356	OUTPUT:
1250	RETVAL	1357	RETVAL
1251		1358
1252	void
1253	_set_current (SV *current)
1254	PROTOTYPE: $
1255	CODE:
1256	SvREFCNT_dec (SvRV (coro_current));
1257	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1258
1259	MODULE = Coro::State PACKAGE = Coro::AIO	1359	MODULE = Coro::State PACKAGE = Coro::AIO
1260		1360
1261	SV *	1361	SV *
1262	_get_state ()	1362	_get_state ()
1263	CODE:	1363	CODE:
1264	{	1364	{
1265	struct {	1365	struct io_state *data;
1266	int errorno;
1267	int laststype;
1268	int laststatval;
1269	Stat_t statcache;
1270	} data;
1271		1366
		1367	RETVAL = newSV (sizeof (struct io_state));
		1368	data = (struct io_state *)SvPVX (RETVAL);
		1369	SvCUR_set (RETVAL, sizeof (struct io_state));
		1370	SvPOK_only (RETVAL);
		1371
1272	data.errorno = errno;	1372	data->errorno = errno;
1273	data.laststype = PL_laststype;	1373	data->laststype = PL_laststype;
1274	data.laststatval = PL_laststatval;	1374	data->laststatval = PL_laststatval;
1275	data.statcache = PL_statcache;	1375	data->statcache = PL_statcache;
1276
1277	RETVAL = newSVpvn ((char *)&data, sizeof data);
1278	}	1376	}
1279	OUTPUT:	1377	OUTPUT:
1280	RETVAL	1378	RETVAL
1281		1379
1282	void	1380	void
1283	_set_state (char *data_)	1381	_set_state (char *data_)
1284	PROTOTYPE: $	1382	PROTOTYPE: $
1285	CODE:	1383	CODE:
1286	{	1384	{
1287	struct {	1385	struct io_state data = (void )data_;
1288	int errorno;
1289	int laststype;
1290	int laststatval;
1291	Stat_t statcache;
1292	} data = (void )data_;
1293		1386
1294	errno = data->errorno;	1387	errno = data->errorno;
1295	PL_laststype = data->laststype;	1388	PL_laststype = data->laststype;
1296	PL_laststatval = data->laststatval;	1389	PL_laststatval = data->laststatval;
1297	PL_statcache = data->statcache;	1390	PL_statcache = data->statcache;
1298	}	1391	}
		1392

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Comparing Coro/Coro/State.xs (file contents): Revision 1.117 by root, Fri Dec 1 19:41:06 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 1.117 by root, Fri Dec 1 19:41:06 2006 UTC vs.
Revision 1.139 by root, Sun Jan 14 21:13:41 2007 UTC