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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 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 */
		121	struct io_state
		122	{
		123	int errorno;
		124	I32 laststype;
		125	int laststatval;
		126	Stat_t statcache;
		127	};
		128
106	static struct CoroAPI coroapi;	129	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	130	static AV main_mainstack; / used to differentiate between $main and others */
108	static HV coro_state_stash, coro_stash;	131	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	132	static SV coro_mortal; / will be freed after next transfer */
110		133
…		…
115	typedef struct coro_cctx {	138	typedef struct coro_cctx {
116	struct coro_cctx *next;	139	struct coro_cctx *next;
117		140
118	/* the stack */	141	/* the stack */
119	void *sptr;	142	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	143	ssize_t ssize; /* positive == mmap, otherwise malloc */
121		144
122	/* cpu state */	145	/* cpu state */
123	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 */
124	JMPENV *top_env;	148	JMPENV *top_env;
125	coro_context cctx;	149	coro_context cctx;
126		150
127	int inuse;	151	int inuse;
128		152
…		…
130	int valgrind_id;	154	int valgrind_id;
131	#endif	155	#endif
132	} coro_cctx;	156	} coro_cctx;
133		157
134	enum {	158	enum {
135	CF_RUNNING = 0x0001, /* coroutine is running */	159	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY = 0x0002, /* coroutine is ready */	160	CF_READY = 0x0002, /* coroutine is ready */
137	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 */
138	};	163	};
139		164
140	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
141	struct coro {	166	struct coro {
142	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
143	coro_cctx *cctx;	168	coro_cctx *cctx;
144		169
145	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
146	AV *args;	171	AV *args;
147	int refcnt;	172	int refcnt;
148	int flags;	173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
149		175
150	/* optionally saved, might be zero */	176	/* optionally saved, might be zero */
151	AV *defav;	177	AV defav; / @_ */
152	SV *defsv;	178	SV defsv; / $_ */
153	SV *errsv;	179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
154		182
155	#define VAR(name,type) type name;	183	#define VAR(name,type) type name;
156	# include "state.h"	184	# include "state.h"
157	#undef VAR	185	#undef VAR
158		186
…		…
160	int prio;	188	int prio;
161	};	189	};
162		190
163	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
164	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 ********************************************************/
165		209
166	static AV *	210	static AV *
167	coro_clone_padlist (CV *cv)	211	coro_clone_padlist (CV *cv)
168	{	212	{
169	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
…		…
244		288
245	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
246	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
247	else	291	else
248	{	292	{
249	#if 0	293	#if PREFER_PERL_FUNCTIONS
250	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
251	CV *cp = Perl_cv_clone (cv);	295	CV *cp = Perl_cv_clone (cv);
252	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
253	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
254	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
…		…
278	av_extend (av, AvMAX (av) + 1);	322	av_extend (av, AvMAX (av) + 1);
279		323
280	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
281	}	325	}
282		326
		327	/ load & save, init *****************************************************/
		328
283	#define SB do {	329	#define SB do {
284	#define SE } while (0)	330	#define SE } while (0)
285		331
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	332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
290		333
291	static void	334	static void
292	load_state (Coro__State c)	335	load_perl (Coro__State c)
293	{	336	{
294	#define VAR(name,type) PL_ ## name = c->name;	337	#define VAR(name,type) PL_ ## name = c->name;
295	# include "state.h"	338	# include "state.h"
296	#undef VAR	339	#undef VAR
297		340
298	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
299	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
300	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	}
301		355
302	{	356	{
303	dSP;	357	dSP;
304	CV *cv;	358	CV *cv;
305		359
…		…
311	CvPADLIST (cv) = (AV *)POPs;	365	CvPADLIST (cv) = (AV *)POPs;
312	}	366	}
313		367
314	PUTBACK;	368	PUTBACK;
315	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
316	}	371	}
317		372
318	static void	373	static void
319	save_state (Coro__State c, int flags)	374	save_perl (Coro__State c)
320	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
321	{	377	{
322	dSP;	378	dSP;
323	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
324	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
325	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
327	/*	383	/*
328	* 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
329	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
330	*/	386	*/
331		387
		388	EXTEND (SP, 3 + 1);
332	PUSHs (Nullsv);	389	PUSHs (Nullsv);
333	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
334	for (;;)	391	for (;;)
335	{	392	{
336	while (cxix >= 0)	393	while (cxix >= 0)
…		…
342	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
343		400
344	if (CvDEPTH (cv))	401	if (CvDEPTH (cv))
345	{	402	{
346	EXTEND (SP, 3);	403	EXTEND (SP, 3);
347
348	PUSHs ((SV *)CvPADLIST (cv));	404	PUSHs ((SV *)CvPADLIST (cv));
349	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
350	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
351		407
352	CvDEPTH (cv) = 0;	408	CvDEPTH (cv) = 0;
353	get_padlist (cv);	409	get_padlist (cv);
354	}	410	}
355	}	411	}
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	}	412	}
365		413
366	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
367	break;	415	break;
368		416
…		…
372	}	420	}
373		421
374	PUTBACK;	422	PUTBACK;
375	}	423	}
376		424
377	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;
378	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
379	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;
380		429
381	#define VAR(name,type)c->name = PL_ ## name;	430	#define VAR(name,type)c->name = PL_ ## name;
382	# include "state.h"	431	# include "state.h"
383	#undef VAR	432	#undef VAR
384	}	433	}
…		…
387	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
388	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
389	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
390	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
391	*/	440	*/
		441	#if PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
392	static void	444	static void
393	coro_init_stacks ()	445	coro_init_stacks ()
394	{	446	{
395	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
396	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
426	New(54,PL_retstack,16,OP*);	478	New(54,PL_retstack,16,OP*);
427	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
428	PL_retstack_max = 16;	480	PL_retstack_max = 16;
429	#endif	481	#endif
430	}	482	}
		483	#endif
431		484
432	/*	485	/*
433	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
434	*/	487	*/
435	static void	488	static void
436	coro_destroy_stacks ()	489	coro_destroy_stacks ()
437	{	490	{
438	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
439	{	492	{
440	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
441	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
442		496
443	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
444	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
445		500
		501	/* unwind all extra stacks */
446	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
447	}	506	}
448		507
449	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
450	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
451		510
452	while (PL_curstackinfo)	511	while (PL_curstackinfo)
453	{	512	{
454	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
455		514
456	{ /D//remove/
457	dSP;
458	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
459	PUTBACK; /* possibly superfluous */
460	}
461
462	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
463	{
464	dounwind (-1);/D//remove/
465	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
466	}
467		517
468	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
469	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
470	PL_curstackinfo = p;	520	PL_curstackinfo = p;
471	}	521	}
…		…
477	#if !PERL_VERSION_ATLEAST (5,9,0)	527	#if !PERL_VERSION_ATLEAST (5,9,0)
478	Safefree (PL_retstack);	528	Safefree (PL_retstack);
479	#endif	529	#endif
480	}	530	}
481		531
		532	/ coroutine stack handling **********************************************/
		533
482	static void	534	static void
483	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
484	{	536	{
485	/*	537	/*
486	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
…		…
488		540
489	coro_init_stacks ();	541	coro_init_stacks ();
490		542
491	PL_curcop = &PL_compiling;	543	PL_curcop = &PL_compiling;
492	PL_in_eval = EVAL_NULL;	544	PL_in_eval = EVAL_NULL;
		545	PL_comppad = 0;
493	PL_curpm = 0;	546	PL_curpm = 0;
494	PL_localizing = 0;	547	PL_localizing = 0;
495	PL_dirty = 0;	548	PL_dirty = 0;
496	PL_restartop = 0;	549	PL_restartop = 0;
497		550
498	{	551	{
499	dSP;	552	dSP;
500	LOGOP myop;	553	LOGOP myop;
501		554
502	/* I have no idea why this is needed, but it is */
503	PUSHMARK (SP);
504
505	SvREFCNT_dec (GvAV (PL_defgv));	555	SvREFCNT_dec (GvAV (PL_defgv));
506	GvAV (PL_defgv) = coro->args; coro->args = 0;	556	GvAV (PL_defgv) = coro->args; coro->args = 0;
507		557
508	Zero (&myop, 1, LOGOP);	558	Zero (&myop, 1, LOGOP);
509	myop.op_next = Nullop;	559	myop.op_next = Nullop;
510	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID;
511		561
512	PL_op = (OP *)&myop;
513
514	PUSHMARK (SP);	562	PUSHMARK (SP);
515	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
516	PUTBACK;	564	PUTBACK;
		565	PL_op = (OP *)&myop;
517	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
518	SPAGAIN;	567	SPAGAIN;
519	}	568	}
520		569
521	ENTER; /* necessary e.g. for dounwind */	570	ENTER; /* necessary e.g. for dounwind */
…		…
529	SvREFCNT_dec (coro_mortal);	578	SvREFCNT_dec (coro_mortal);
530	coro_mortal = 0;	579	coro_mortal = 0;
531	}	580	}
532	}	581	}
533		582
		583	/* inject a fake call to Coro::State::_cctx_init into the execution */
534	static void NOINLINE	584	static void NOINLINE
535	prepare_cctx (coro_cctx *cctx)	585	prepare_cctx (coro_cctx *cctx)
536	{	586	{
537	dSP;	587	dSP;
538	LOGOP myop;	588	LOGOP myop;
539		589
540	Zero (&myop, 1, LOGOP);	590	Zero (&myop, 1, LOGOP);
541	myop.op_next = PL_op;	591	myop.op_next = PL_op;
542	myop.op_flags = OPf_WANT_VOID;	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
543
544	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
545		593
546	PUSHMARK (SP);	594	PUSHMARK (SP);
		595	EXTEND (SP, 2);
		596	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
547	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	597	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
548	PUTBACK;	598	PUTBACK;
		599	PL_op = (OP *)&myop;
549	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
550	SPAGAIN;	601	SPAGAIN;
551	}	602	}
552		603
553	static void	604	static void
554	coro_run (void *arg)	605	coro_run (void *arg)
555	{	606	{
556	/* coro_run is the alternative epilogue of transfer() */	607	/* coro_run is the alternative tail of transfer(), so unlock here. */
557	UNLOCK;	608	UNLOCK;
558		609
559	/*	610	/*
560	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
561	*/	612	*/
…		…
563		614
564	/* inject call to cctx_init */	615	/* inject call to cctx_init */
565	prepare_cctx ((coro_cctx *)arg);	616	prepare_cctx ((coro_cctx *)arg);
566		617
567	/* somebody will hit me for both perl_run and PL_restartop */	618	/* somebody will hit me for both perl_run and PL_restartop */
		619	PL_restartop = PL_op;
568	perl_run (PL_curinterp);	620	perl_run (PL_curinterp);
569		621
570	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);
571	abort ();	623	abort ();
572	}	624	}
…		…
576	{	628	{
577	coro_cctx *cctx;	629	coro_cctx *cctx;
578		630
579	++cctx_count;	631	++cctx_count;
580		632
581	New (0, cctx, 1, coro_cctx);	633	Newz (0, cctx, 1, coro_cctx);
582		634
583	#if HAVE_MMAP	635	#if HAVE_MMAP
584		636
585	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	637	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;
586	/* mmap suppsedly does allocate-on-write for us */	638	/* 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);	639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
588		640
589	if (cctx->sptr == (void *)-1)	641	if (cctx->sptr != (void *)-1)
590	{
591	perror ("FATAL: unable to mmap stack for coroutine");
592	_exit (EXIT_FAILURE);
593	}	642	{
594
595	# if STACKGUARD	643	# if STACKGUARD
596	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	644	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);
597	# endif	645	# endif
598		646	REGISTER_STACK (
599	#else	647	cctx,
600
601	cctx->ssize = STACKSIZE * (long)sizeof (long);
602	New (0, cctx->sptr, STACKSIZE, long);
603
604	if (!cctx->sptr)
605	{
606	perror ("FATAL: unable to malloc stack for coroutine");
607	_exit (EXIT_FAILURE);
608	}
609
610	#endif
611
612	#if USE_VALGRIND
613	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
614	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	648	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
615	cctx->ssize + (char *)cctx->sptr	649	cctx->ssize + (char *)cctx->sptr
616	);	650	);
617	#endif
618		651
619	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	}
620		674
621	return cctx;	675	return cctx;
622	}	676	}
623		677
624	static void	678	static void
…		…
632	#if USE_VALGRIND	686	#if USE_VALGRIND
633	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
634	#endif	688	#endif
635		689
636	#if HAVE_MMAP	690	#if HAVE_MMAP
		691	if (cctx->ssize > 0)
637	munmap (cctx->sptr, cctx->ssize);	692	munmap (cctx->sptr, cctx->ssize);
638	#else	693	else
		694	#endif
639	Safefree (cctx->sptr);	695	Safefree (cctx->sptr);
640	#endif
641		696
642	Safefree (cctx);	697	Safefree (cctx);
643	}	698	}
644		699
645	static coro_cctx *	700	static coro_cctx *
…		…
679	++cctx_idle;	734	++cctx_idle;
680	cctx->next = cctx_first;	735	cctx->next = cctx_first;
681	cctx_first = cctx;	736	cctx_first = cctx;
682	}	737	}
683		738
		739	/ coroutine switching ***************************************************/
		740
684	/* never call directly, always through the coro_state_transfer global variable */	741	/* never call directly, always through the coro_state_transfer global variable */
685	static void NOINLINE	742	static void NOINLINE
686	transfer (struct coro prev, struct coro next, int flags)	743	transfer (struct coro prev, struct coro next)
687	{	744	{
688	dSTACKLEVEL;	745	dSTACKLEVEL;
689		746
690	/* sometimes transfer is only called to set idle_sp */	747	/* sometimes transfer is only called to set idle_sp */
691	if (flags == TRANSFER_SET_STACKLEVEL)	748	if (!next)
		749	{
692	((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	}
693	else if (prev != next)	753	else if (prev != next)
694	{	754	{
695	coro_cctx *prev__cctx;	755	coro_cctx *prev__cctx;
696		756
697	if (prev->flags & CF_NEW)	757	if (prev->flags & CF_NEW)
…		…
708	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");
709		769
710	if (next->flags & CF_RUNNING)	770	if (next->flags & CF_RUNNING)
711	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");
712		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
713	prev->flags &= ~CF_RUNNING;	776	prev->flags &= ~CF_RUNNING;
714	next->flags \|= CF_RUNNING;	777	next->flags \|= CF_RUNNING;
715		778
716	LOCK;	779	LOCK;
717		780
718	if (next->flags & CF_NEW)	781	if (next->flags & CF_NEW)
719	{	782	{
720	/* need to start coroutine */	783	/* need to start coroutine */
721	next->flags &= ~CF_NEW;	784	next->flags &= ~CF_NEW;
722	/* first get rid of the old state */	785	/* first get rid of the old state */
723	SAVE (prev, -1);	786	save_perl (prev);
724	/* setup coroutine call */	787	/* setup coroutine call */
725	setup_coro (next);	788	setup_coro (next);
726	/* need a new stack */	789	/* need a new stack */
727	assert (!next->stack);	790	assert (!next->cctx);
728	}	791	}
729	else	792	else
730	{	793	{
731	/* coroutine already started */	794	/* coroutine already started */
732	SAVE (prev, flags);	795	save_perl (prev);
733	LOAD (next);	796	load_perl (next);
734	}	797	}
735		798
736	prev__cctx = prev->cctx;	799	prev__cctx = prev->cctx;
737		800
738	/* possibly "free" the cctx */	801	/* possibly "free" the cctx */
739	if (prev__cctx->idle_sp == STACKLEVEL)	802	if (prev__cctx->idle_sp == STACKLEVEL)
740	{	803	{
741	/* 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 */
742	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));
743		806
744	prev->cctx = 0;	807	prev->cctx = 0;
745		808
746	cctx_put (prev__cctx);	809	cctx_put (prev__cctx);
747	prev__cctx->inuse = 0;	810	prev__cctx->inuse = 0;
…		…
760	PL_top_env = next->cctx->top_env;	823	PL_top_env = next->cctx->top_env;
761	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
762	}	825	}
763		826
764	free_coro_mortal ();	827	free_coro_mortal ();
765
766	UNLOCK;	828	UNLOCK;
767	}	829	}
768	}	830	}
769		831
770	struct transfer_args	832	struct transfer_args
771	{	833	{
772	struct coro prev, next;	834	struct coro prev, next;
773	int flags;
774	};	835	};
775		836
776	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
777		838
		839	/ high level stuff ******************************************************/
		840
778	static void	841	static int
779	coro_state_destroy (struct coro *coro)	842	coro_state_destroy (struct coro *coro)
780	{	843	{
781	if (coro->refcnt--)	844	if (coro->flags & CF_DESTROYED)
782	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 */
783		859
784	if (coro->mainstack && coro->mainstack != main_mainstack)	860	if (coro->mainstack && coro->mainstack != main_mainstack)
785	{	861	{
786	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;
787		868
788	if (coro->flags & CF_RUNNING)	869	if (coro->flags & CF_RUNNING)
789	croak ("FATAL: tried to destroy currently running coroutine");	870	croak ("FATAL: tried to destroy currently running coroutine");
790		871
791	SAVE ((&temp), TRANSFER_SAVE_ALL);	872	save_perl (&temp);
792	LOAD (coro);	873	load_perl (coro);
793		874
794	coro_destroy_stacks ();	875	coro_destroy_stacks ();
795		876
796	LOAD ((&temp)); /* this will get rid of defsv etc.. */	877	load_perl (&temp); /* this will get rid of defsv etc.. */
797		878
798	coro->mainstack = 0;	879	coro->mainstack = 0;
799	}	880	}
800		881
801	cctx_destroy (coro->cctx);	882	cctx_destroy (coro->cctx);
802	SvREFCNT_dec (coro->args);	883	SvREFCNT_dec (coro->args);
803	Safefree (coro);	884
		885	return 1;
804	}	886	}
805		887
806	static int	888	static int
807	coro_state_clear (pTHX_ SV sv, MAGIC mg)	889	coro_state_free (pTHX_ SV sv, MAGIC mg)
808	{	890	{
809	struct coro coro = (struct coro )mg->mg_ptr;	891	struct coro coro = (struct coro )mg->mg_ptr;
810	mg->mg_ptr = 0;	892	mg->mg_ptr = 0;
811		893
		894	if (--coro->refcnt < 0)
		895	{
812	coro_state_destroy (coro);	896	coro_state_destroy (coro);
		897	Safefree (coro);
		898	}
813		899
814	return 0;	900	return 0;
815	}	901	}
816		902
817	static int	903	static int
…		…
824	return 0;	910	return 0;
825	}	911	}
826		912
827	static MGVTBL coro_state_vtbl = {	913	static MGVTBL coro_state_vtbl = {
828	0, 0, 0, 0,	914	0, 0, 0, 0,
829	coro_state_clear,	915	coro_state_free,
830	0,	916	0,
831	#ifdef MGf_DUP	917	#ifdef MGf_DUP
832	coro_state_dup,	918	coro_state_dup,
833	#else	919	#else
834	# define MGf_DUP 0	920	# define MGf_DUP 0
…		…
856	assert (mg->mg_type == PERL_MAGIC_ext);	942	assert (mg->mg_type == PERL_MAGIC_ext);
857	return (struct coro *)mg->mg_ptr;	943	return (struct coro *)mg->mg_ptr;
858	}	944	}
859		945
860	static void	946	static void
861	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)
862	{	948	{
863	ta->prev = SvSTATE (prev);	949	ta->prev = SvSTATE (prev_sv);
864	ta->next = SvSTATE (next);	950	ta->next = SvSTATE (next_sv);
865	ta->flags = flags;
866	}	951	}
867		952
868	static void	953	static void
869	api_transfer (SV prev, SV next, int flags)	954	api_transfer (SV prev_sv, SV next_sv)
870	{	955	{
871	struct transfer_args ta;	956	struct transfer_args ta;
872		957
873	prepare_transfer (&ta, prev, next, flags);	958	prepare_transfer (&ta, prev_sv, next_sv);
874	TRANSFER (ta);	959	TRANSFER (ta);
875	}	960	}
876		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
877	/ Coro ******************************************************************/	974	/ Coro ******************************************************************/
878		975
879	#define PRIO_MAX 3
880	#define PRIO_HIGH 1
881	#define PRIO_NORMAL 0
882	#define PRIO_LOW -1
883	#define PRIO_IDLE -3
884	#define PRIO_MIN -4
885
886	/* for Coro.pm */
887	static SV *coro_current;
888	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
889	static int coro_nready;
890
891	static void	976	static void
892	coro_enq (SV *coro_sv)	977	coro_enq (SV *coro_sv)
893	{	978	{
894	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);
895	coro_nready++;
896	}	980	}
897		981
898	static SV *	982	static SV *
899	coro_deq (int min_prio)	983	coro_deq (int min_prio)
900	{	984	{
…		…
904	if (min_prio < 0)	988	if (min_prio < 0)
905	min_prio = 0;	989	min_prio = 0;
906		990
907	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	991	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
908	if (AvFILLp (coro_ready [prio]) >= 0)	992	if (AvFILLp (coro_ready [prio]) >= 0)
909	{
910	coro_nready--;
911	return av_shift (coro_ready [prio]);	993	return av_shift (coro_ready [prio]);
912	}
913		994
914	return 0;	995	return 0;
915	}	996	}
916		997
917	static int	998	static int
…		…
925	coro = SvSTATE (coro_sv);	1006	coro = SvSTATE (coro_sv);
926		1007
927	if (coro->flags & CF_READY)	1008	if (coro->flags & CF_READY)
928	return 0;	1009	return 0;
929		1010
930	#if 0 /* this is actually harmless */
931	if (coro->flags & CF_RUNNING)
932	croak ("Coro::ready called on currently running coroutine");
933	#endif
934
935	coro->flags \|= CF_READY;	1011	coro->flags \|= CF_READY;
936		1012
937	LOCK;	1013	LOCK;
938	coro_enq (SvREFCNT_inc (coro_sv));	1014	coro_enq (SvREFCNT_inc (coro_sv));
		1015	++coro_nready;
939	UNLOCK;	1016	UNLOCK;
940		1017
941	return 1;	1018	return 1;
942	}	1019	}
943		1020
944	static int	1021	static int
945	api_is_ready (SV *coro_sv)	1022	api_is_ready (SV *coro_sv)
946	{	1023	{
947	return !!SvSTATE (coro_sv)->flags & CF_READY;	1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);
948	}	1025	}
949		1026
950	static void	1027	static void
951	prepare_schedule (struct transfer_args *ta)	1028	prepare_schedule (struct transfer_args *ta)
952	{	1029	{
953	SV prev, next;	1030	SV prev_sv, next_sv;
954		1031
955	for (;;)	1032	for (;;)
956	{	1033	{
957	LOCK;	1034	LOCK;
958	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;
959	UNLOCK;	1067	UNLOCK;
960
961	if (next)
962	break;	1068	break;
963
964	{
965	dSP;
966
967	ENTER;
968	SAVETMPS;
969
970	PUSHMARK (SP);
971	PUTBACK;
972	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
973
974	FREETMPS;
975	LEAVE;
976	}	1069	}
977	}
978
979	prev = SvRV (coro_current);
980	SvRV_set (coro_current, next);
981		1070
982	/* 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
983	LOCK;	1079	LOCK;
984	free_coro_mortal ();	1080	free_coro_mortal ();
		1081	coro_mortal = prev_sv;
985	UNLOCK;	1082	UNLOCK;
986	coro_mortal = prev;
987
988	assert (!SvROK(prev));//D
989	assert (!SvROK(next));//D
990
991	ta->prev = SvSTATE (prev);
992	ta->next = SvSTATE (next);
993	ta->flags = TRANSFER_SAVE_ALL;
994
995	assert (ta->flags & CF_READY);
996	ta->next->flags &= ~CF_READY;
997	}	1083	}
998		1084
999	static void	1085	static void
1000	prepare_cede (struct transfer_args *ta)	1086	prepare_cede (struct transfer_args *ta)
1001	{	1087	{
1002	api_ready (coro_current);	1088	api_ready (coro_current);
1003
1004	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;
1005	}	1104	}
1006		1105
1007	static void	1106	static void
1008	api_schedule (void)	1107	api_schedule (void)
1009	{	1108	{
…		…
1011		1110
1012	prepare_schedule (&ta);	1111	prepare_schedule (&ta);
1013	TRANSFER (ta);	1112	TRANSFER (ta);
1014	}	1113	}
1015		1114
1016	static void	1115	static int
1017	api_cede (void)	1116	api_cede (void)
1018	{	1117	{
1019	struct transfer_args ta;	1118	struct transfer_args ta;
1020		1119
1021	prepare_cede (&ta);	1120	prepare_cede (&ta);
		1121
		1122	if (ta.prev != ta.next)
		1123	{
1022	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;
1023	}	1143	}
1024		1144
1025	MODULE = Coro::State PACKAGE = Coro::State	1145	MODULE = Coro::State PACKAGE = Coro::State
1026		1146
1027	PROTOTYPES: DISABLE	1147	PROTOTYPES: DISABLE
…		…
1033	#endif	1153	#endif
1034	BOOT_PAGESIZE;	1154	BOOT_PAGESIZE;
1035		1155
1036	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1037		1157
1038	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1039	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1040	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));
1041		1163
1042	main_mainstack = PL_mainstack;	1164	main_mainstack = PL_mainstack;
1043		1165
1044	coroapi.ver = CORO_API_VERSION;	1166	coroapi.ver = CORO_API_VERSION;
1045	coroapi.transfer = api_transfer;	1167	coroapi.transfer = api_transfer;
…		…
1055	HV *hv;	1177	HV *hv;
1056	int i;	1178	int i;
1057		1179
1058	Newz (0, coro, 1, struct coro);	1180	Newz (0, coro, 1, struct coro);
1059	coro->args = newAV ();	1181	coro->args = newAV ();
		1182	coro->save = CORO_SAVE_ALL;
1060	coro->flags = CF_NEW;	1183	coro->flags = CF_NEW;
1061		1184
1062	hv = newHV ();	1185	hv = newHV ();
1063	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;
1064	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1065		1188
1066	for (i = 1; i < items; i++)	1189	for (i = 1; i < items; i++)
1067	av_push (coro->args, newSVsv (ST (i)));	1190	av_push (coro->args, newSVsv (ST (i)));
1068	}	1191	}
1069	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:
1070	RETVAL	1200	RETVAL
1071		1201
1072	void	1202	void
1073	_set_stacklevel (...)	1203	_set_stacklevel (...)
1074	ALIAS:	1204	ALIAS:
1075	Coro::State::transfer = 1	1205	Coro::State::transfer = 1
1076	Coro::schedule = 2	1206	Coro::schedule = 2
1077	Coro::cede = 3	1207	Coro::cede = 3
		1208	Coro::cede_notself = 4
1078	CODE:	1209	CODE:
1079	{	1210	{
1080	struct transfer_args ta;	1211	struct transfer_args ta;
1081		1212
1082	switch (ix)	1213	switch (ix)
1083	{	1214	{
1084	case 0:	1215	case 0:
1085	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1216	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1086	ta.next = 0;	1217	ta.next = 0;
1087	ta.flags = TRANSFER_SET_STACKLEVEL;
1088	break;	1218	break;
1089		1219
1090	case 1:	1220	case 1:
1091	if (items != 3)	1221	if (items != 2)
1092	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);
1093		1223
1094	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1224	prepare_transfer (&ta, ST (0), ST (1));
1095	break;	1225	break;
1096		1226
1097	case 2:	1227	case 2:
1098	prepare_schedule (&ta);	1228	prepare_schedule (&ta);
1099	break;	1229	break;
1100		1230
1101	case 3:	1231	case 3:
1102	prepare_cede (&ta);	1232	prepare_cede (&ta);
1103	break;	1233	break;
		1234
		1235	case 4:
		1236	if (!prepare_cede_notself (&ta))
		1237	XSRETURN_EMPTY;
		1238
		1239	break;
1104	}	1240	}
1105		1241
		1242	BARRIER;
1106	TRANSFER (ta);	1243	TRANSFER (ta);
1107	}
1108		1244
1109	void	1245	if (GIMME_V != G_VOID && ta.next != ta.prev)
1110	_clone_state_from (SV dst, SV src)	1246	XSRETURN_YES;
		1247	}
		1248
		1249	bool
		1250	_destroy (SV *coro_sv)
1111	CODE:	1251	CODE:
1112	{	1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1113	struct coro *coro_src = SvSTATE (src);	1253	OUTPUT:
1114		1254	RETVAL
1115	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1116
1117	++coro_src->refcnt;
1118	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1119	}
1120		1255
1121	void	1256	void
1122	_exit (code)	1257	_exit (code)
1123	int code	1258	int code
1124	PROTOTYPE: $	1259	PROTOTYPE: $
…		…
1161	coro_ready[i] = newAV ();	1296	coro_ready[i] = newAV ();
1162		1297
1163	{	1298	{
1164	SV *sv = perl_get_sv("Coro::API", 1);	1299	SV *sv = perl_get_sv("Coro::API", 1);
1165		1300
1166	coroapi.schedule = api_schedule;	1301	coroapi.schedule = api_schedule;
		1302	coroapi.save = api_save;
1167	coroapi.cede = api_cede;	1303	coroapi.cede = api_cede;
		1304	coroapi.cede_notself = api_cede_notself;
1168	coroapi.ready = api_ready;	1305	coroapi.ready = api_ready;
1169	coroapi.is_ready = api_is_ready;	1306	coroapi.is_ready = api_is_ready;
1170	coroapi.nready = &coro_nready;	1307	coroapi.nready = &coro_nready;
1171	coroapi.current = coro_current;	1308	coroapi.current = coro_current;
1172		1309
1173	GCoroAPI = &coroapi;	1310	GCoroAPI = &coroapi;
1174	sv_setiv (sv, (IV)&coroapi);	1311	sv_setiv (sv, (IV)&coroapi);
1175	SvREADONLY_on (sv);	1312	SvREADONLY_on (sv);
1176	}	1313	}
1177	}	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)));
1178		1322
1179	int	1323	int
1180	prio (Coro::State coro, int newprio = 0)	1324	prio (Coro::State coro, int newprio = 0)
1181	ALIAS:	1325	ALIAS:
1182	nice = 1	1326	nice = 1
…		…
1185	RETVAL = coro->prio;	1329	RETVAL = coro->prio;
1186		1330
1187	if (items > 1)	1331	if (items > 1)
1188	{	1332	{
1189	if (ix)	1333	if (ix)
1190	newprio += coro->prio;	1334	newprio = coro->prio - newprio;
1191		1335
1192	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1336	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1193	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1337	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1194		1338
1195	coro->prio = newprio;	1339	coro->prio = newprio;
1196	}	1340	}
1197	}	1341	}
		1342	OUTPUT:
		1343	RETVAL
1198		1344
1199	SV *	1345	SV *
1200	ready (SV *self)	1346	ready (SV *self)
1201	PROTOTYPE: $	1347	PROTOTYPE: $
1202	CODE:	1348	CODE:
…		…
1218	CODE:	1364	CODE:
1219	RETVAL = coro_nready;	1365	RETVAL = coro_nready;
1220	OUTPUT:	1366	OUTPUT:
1221	RETVAL	1367	RETVAL
1222		1368
1223	void
1224	_set_current (SV *current)
1225	PROTOTYPE: $
1226	CODE:
1227	SvREFCNT_dec (SvRV (coro_current));
1228	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1229
1230	MODULE = Coro::State PACKAGE = Coro::AIO	1369	MODULE = Coro::State PACKAGE = Coro::AIO
1231		1370
1232	SV *	1371	SV *
1233	_get_state ()	1372	_get_state ()
1234	CODE:	1373	CODE:
1235	{	1374	{
1236	struct {	1375	struct io_state *data;
1237	int errorno;
1238	int laststype;
1239	int laststatval;
1240	Stat_t statcache;
1241	} data;
1242		1376
		1377	RETVAL = newSV (sizeof (struct io_state));
		1378	data = (struct io_state *)SvPVX (RETVAL);
		1379	SvCUR_set (RETVAL, sizeof (struct io_state));
		1380	SvPOK_only (RETVAL);
		1381
1243	data.errorno = errno;	1382	data->errorno = errno;
1244	data.laststype = PL_laststype;	1383	data->laststype = PL_laststype;
1245	data.laststatval = PL_laststatval;	1384	data->laststatval = PL_laststatval;
1246	data.statcache = PL_statcache;	1385	data->statcache = PL_statcache;
1247
1248	RETVAL = newSVpvn ((char *)&data, sizeof data);
1249	}	1386	}
1250	OUTPUT:	1387	OUTPUT:
1251	RETVAL	1388	RETVAL
1252		1389
1253	void	1390	void
1254	_set_state (char *data_)	1391	_set_state (char *data_)
1255	PROTOTYPE: $	1392	PROTOTYPE: $
1256	CODE:	1393	CODE:
1257	{	1394	{
1258	struct {	1395	struct io_state data = (void )data_;
1259	int errorno;
1260	int laststype;
1261	int laststatval;
1262	Stat_t statcache;
1263	} data = (void )data_;
1264		1396
1265	errno = data->errorno;	1397	errno = data->errorno;
1266	PL_laststype = data->laststype;	1398	PL_laststype = data->laststype;
1267	PL_laststatval = data->laststatval;	1399	PL_laststatval = data->laststatval;
1268	PL_statcache = data->statcache;	1400	PL_statcache = data->statcache;
1269	}	1401	}
		1402

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing Coro/Coro/State.xs (file contents): Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs. Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.119 by root, Sat Dec 2 15:41:28 2006 UTC vs.
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC