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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC vs.
Revision 1.145 by root, Mon Mar 12 21:40:14 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 CORO_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 CORO_STACKGUARD
		80	#endif
		81
		82	#ifndef CORO_STACKGUARD
		83	# define CORO_STACKGUARD 0
		84	#endif
		85
		86	/* prefer perl internal functions over our own? */
		87	#ifndef CORO_PREFER_PERL_FUNCTIONS
		88	# define CORO_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
		129	static size_t coro_stacksize = CORO_STACKSIZE;
106	static struct CoroAPI coroapi;	130	static struct CoroAPI coroapi;
107	static AV main_mainstack; / used to differentiate between $main and others */	131	static AV main_mainstack; / used to differentiate between $main and others */
108	static HV coro_state_stash, coro_stash;	132	static HV coro_state_stash, coro_stash;
109	static SV coro_mortal; / will be freed after next transfer */	133	static SV coro_mortal; / will be freed after next transfer */
110		134
…		…
115	typedef struct coro_cctx {	139	typedef struct coro_cctx {
116	struct coro_cctx *next;	140	struct coro_cctx *next;
117		141
118	/* the stack */	142	/* the stack */
119	void *sptr;	143	void *sptr;
120	long ssize; /* positive == mmap, otherwise malloc */	144	size_t ssize;
121		145
122	/* cpu state */	146	/* cpu state */
123	void idle_sp; / sp of top-level transfer/schedule/cede call */	147	void idle_sp; / sp of top-level transfer/schedule/cede call */
		148	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
124	JMPENV *top_env;	149	JMPENV *top_env;
125	coro_context cctx;	150	coro_context cctx;
126		151
127	int inuse;
128
129	#if USE_VALGRIND	152	#if CORO_USE_VALGRIND
130	int valgrind_id;	153	int valgrind_id;
131	#endif	154	#endif
		155	char inuse, mapped;
132	} coro_cctx;	156	} coro_cctx;
133		157
134	enum {	158	enum {
135	CF_RUNNING, /* coroutine is running */	159	CF_RUNNING = 0x0001, /* coroutine is running */
136	CF_READY, /* coroutine is ready */	160	CF_READY = 0x0002, /* coroutine is ready */
		161	CF_NEW = 0x0004, /* has never been switched to */
		162	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
137	};	163	};
138		164
139	/* this is a structure representing a perl-level coroutine */	165	/* this is a structure representing a perl-level coroutine */
140	struct coro {	166	struct coro {
141	/* the c coroutine allocated to this perl coroutine, if any */	167	/* the c coroutine allocated to this perl coroutine, if any */
142	coro_cctx *cctx;	168	coro_cctx *cctx;
143		169
144	/* data associated with this coroutine (initial args) */	170	/* data associated with this coroutine (initial args) */
145	AV *args;	171	AV *args;
146	int refcnt;	172	int refcnt;
147	int flags;	173	int save; /* CORO_SAVE flags */
		174	int flags; /* CF_ flags */
148		175
149	/* optionally saved, might be zero */	176	/* optionally saved, might be zero */
150	AV *defav;	177	AV defav; / @_ */
151	SV *defsv;	178	SV defsv; / $_ */
152	SV *errsv;	179	SV errsv; / $@ */
		180	SV irssv; / $/ */
		181	SV irssv_sv; / real $/ cache */
153		182
154	#define VAR(name,type) type name;	183	#define VAR(name,type) type name;
155	# include "state.h"	184	# include "state.h"
156	#undef VAR	185	#undef VAR
157		186
…		…
159	int prio;	188	int prio;
160	};	189	};
161		190
162	typedef struct coro *Coro__State;	191	typedef struct coro *Coro__State;
163	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 ********************************************************/
164		209
165	static AV *	210	static AV *
166	coro_clone_padlist (CV *cv)	211	coro_clone_padlist (CV *cv)
167	{	212	{
168	AV *padlist = CvPADLIST (cv);	213	AV *padlist = CvPADLIST (cv);
…		…
243		288
244	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
245	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
246	else	291	else
247	{	292	{
248	#if 0	293	#if CORO_PREFER_PERL_FUNCTIONS
249	/* this is probably cleaner, but also slower? */	294	/* this is probably cleaner, but also slower? */
250	CV *cp = Perl_cv_clone (cv);	295	CV *cp = Perl_cv_clone (cv);
251	CvPADLIST (cv) = CvPADLIST (cp);	296	CvPADLIST (cv) = CvPADLIST (cp);
252	CvPADLIST (cp) = 0;	297	CvPADLIST (cp) = 0;
253	SvREFCNT_dec (cp);	298	SvREFCNT_dec (cp);
…		…
277	av_extend (av, AvMAX (av) + 1);	322	av_extend (av, AvMAX (av) + 1);
278		323
279	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
280	}	325	}
281		326
		327	/ load & save, init *****************************************************/
		328
282	#define SB do {	329	#define SB do {
283	#define SE } while (0)	330	#define SE } while (0)
284		331
285	#define LOAD(state) load_state((state));
286	#define SAVE(state,flags) save_state((state),(flags));
287
288	#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
289		333
290	static void	334	static void
291	load_state(Coro__State c)	335	load_perl (Coro__State c)
292	{	336	{
293	#define VAR(name,type) PL_ ## name = c->name;	337	#define VAR(name,type) PL_ ## name = c->name;
294	# include "state.h"	338	# include "state.h"
295	#undef VAR	339	#undef VAR
296		340
297	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
298	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
299	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	}
300		355
301	{	356	{
302	dSP;	357	dSP;
303	CV *cv;	358	CV *cv;
304		359
…		…
310	CvPADLIST (cv) = (AV *)POPs;	365	CvPADLIST (cv) = (AV *)POPs;
311	}	366	}
312		367
313	PUTBACK;	368	PUTBACK;
314	}	369	}
		370	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
315	}	371	}
316		372
317	static void	373	static void
318	save_state(Coro__State c, int flags)	374	save_perl (Coro__State c)
319	{	375	{
		376	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
320	{	377	{
321	dSP;	378	dSP;
322	I32 cxix = cxstack_ix;	379	I32 cxix = cxstack_ix;
323	PERL_CONTEXT *ccstk = cxstack;	380	PERL_CONTEXT *ccstk = cxstack;
324	PERL_SI *top_si = PL_curstackinfo;	381	PERL_SI *top_si = PL_curstackinfo;
…		…
326	/*	383	/*
327	* 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
328	* (and reinitialize) all cv's in the whole callchain :(	385	* (and reinitialize) all cv's in the whole callchain :(
329	*/	386	*/
330		387
		388	EXTEND (SP, 3 + 1);
331	PUSHs (Nullsv);	389	PUSHs (Nullsv);
332	/* this loop was inspired by pp_caller */	390	/* this loop was inspired by pp_caller */
333	for (;;)	391	for (;;)
334	{	392	{
335	while (cxix >= 0)	393	while (cxix >= 0)
336	{	394	{
337	PERL_CONTEXT *cx = &ccstk[cxix--];	395	PERL_CONTEXT *cx = &ccstk[cxix--];
338		396
339	if (CxTYPE(cx) == CXt_SUB)	397	if (CxTYPE (cx) == CXt_SUB)
340	{	398	{
341	CV *cv = cx->blk_sub.cv;	399	CV *cv = cx->blk_sub.cv;
342		400
343	if (CvDEPTH (cv))	401	if (CvDEPTH (cv))
344	{	402	{
345	EXTEND (SP, 3);	403	EXTEND (SP, 3);
346
347	PUSHs ((SV *)CvPADLIST(cv));	404	PUSHs ((SV *)CvPADLIST (cv));
348	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
349	PUSHs ((SV *)cv);	406	PUSHs ((SV *)cv);
350		407
351	CvDEPTH (cv) = 0;	408	CvDEPTH (cv) = 0;
352	get_padlist (cv);	409	get_padlist (cv);
353	}	410	}
354	}	411	}
355	#ifdef CXt_FORMAT
356	else if (CxTYPE(cx) == CXt_FORMAT)
357	{
358	/* I never used formats, so how should I know how these are implemented? */
359	/* my bold guess is as a simple, plain sub... */
360	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
361	}
362	#endif
363	}	412	}
364		413
365	if (top_si->si_type == PERLSI_MAIN)	414	if (top_si->si_type == PERLSI_MAIN)
366	break;	415	break;
367		416
…		…
371	}	420	}
372		421
373	PUTBACK;	422	PUTBACK;
374	}	423	}
375		424
376	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;
377	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
378	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;
379		429
380	#define VAR(name,type)c->name = PL_ ## name;	430	#define VAR(name,type)c->name = PL_ ## name;
381	# include "state.h"	431	# include "state.h"
382	#undef VAR	432	#undef VAR
383	}	433	}
…		…
386	* allocate various perl stacks. This is an exact copy	436	* allocate various perl stacks. This is an exact copy
387	* of perl.c:init_stacks, except that it uses less memory	437	* of perl.c:init_stacks, except that it uses less memory
388	* on the (sometimes correct) assumption that coroutines do	438	* on the (sometimes correct) assumption that coroutines do
389	* not usually need a lot of stackspace.	439	* not usually need a lot of stackspace.
390	*/	440	*/
		441	#if CORO_PREFER_PERL_FUNCTIONS
		442	# define coro_init_stacks init_stacks
		443	#else
391	static void	444	static void
392	coro_init_stacks ()	445	coro_init_stacks ()
393	{	446	{
394	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
395	PL_curstackinfo->si_type = PERLSI_MAIN;	448	PL_curstackinfo->si_type = PERLSI_MAIN;
…		…
425	New(54,PL_retstack,16,OP*);	478	New(54,PL_retstack,16,OP*);
426	PL_retstack_ix = 0;	479	PL_retstack_ix = 0;
427	PL_retstack_max = 16;	480	PL_retstack_max = 16;
428	#endif	481	#endif
429	}	482	}
		483	#endif
430		484
431	/*	485	/*
432	* destroy the stacks, the callchain etc...	486	* destroy the stacks, the callchain etc...
433	*/	487	*/
434	static void	488	static void
435	coro_destroy_stacks ()	489	coro_destroy_stacks ()
436	{	490	{
437	if (!IN_DESTRUCT)	491	if (!IN_DESTRUCT)
438	{	492	{
439	/* is this ugly, I ask? */	493	/* restore all saved variables and stuff */
440	LEAVE_SCOPE (0);	494	LEAVE_SCOPE (0);
		495	assert (PL_tmps_floor == -1);
441		496
442	/* sure it is, but more important: is it correct?? :/ */	497	/* free all temporaries */
443	FREETMPS;	498	FREETMPS;
		499	assert (PL_tmps_ix == -1);
444		500
		501	/* unwind all extra stacks */
445	/POPSTACK_TO (PL_mainstack);//D//use/	502	POPSTACK_TO (PL_mainstack);
		503
		504	/* unwind main stack */
		505	dounwind (-1);
446	}	506	}
447		507
448	while (PL_curstackinfo->si_next)	508	while (PL_curstackinfo->si_next)
449	PL_curstackinfo = PL_curstackinfo->si_next;	509	PL_curstackinfo = PL_curstackinfo->si_next;
450		510
451	while (PL_curstackinfo)	511	while (PL_curstackinfo)
452	{	512	{
453	PERL_SI *p = PL_curstackinfo->si_prev;	513	PERL_SI *p = PL_curstackinfo->si_prev;
454		514
455	{ /D//remove/
456	dSP;
457	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
458	PUTBACK; /* possibly superfluous */
459	}
460
461	if (!IN_DESTRUCT)	515	if (!IN_DESTRUCT)
462	{
463	dounwind (-1);/D//remove/
464	SvREFCNT_dec (PL_curstackinfo->si_stack);	516	SvREFCNT_dec (PL_curstackinfo->si_stack);
465	}
466		517
467	Safefree (PL_curstackinfo->si_cxstack);	518	Safefree (PL_curstackinfo->si_cxstack);
468	Safefree (PL_curstackinfo);	519	Safefree (PL_curstackinfo);
469	PL_curstackinfo = p;	520	PL_curstackinfo = p;
470	}	521	}
…		…
476	#if !PERL_VERSION_ATLEAST (5,9,0)	527	#if !PERL_VERSION_ATLEAST (5,9,0)
477	Safefree (PL_retstack);	528	Safefree (PL_retstack);
478	#endif	529	#endif
479	}	530	}
480		531
		532	/ coroutine stack handling **********************************************/
		533
481	static void	534	static void
482	setup_coro (struct coro *coro)	535	setup_coro (struct coro *coro)
483	{	536	{
484	/*	537	/*
485	* emulate part of the perl startup here.	538	* emulate part of the perl startup here.
486	*/	539	*/
487		540
488	coro_init_stacks ();	541	coro_init_stacks ();
489		542
		543	PL_curcop = &PL_compiling;
		544	PL_in_eval = EVAL_NULL;
490	PL_curcop = 0;	545	PL_comppad = 0;
491	PL_in_eval = 0;
492	PL_curpm = 0;	546	PL_curpm = 0;
		547	PL_localizing = 0;
		548	PL_dirty = 0;
		549	PL_restartop = 0;
493		550
494	{	551	{
495	dSP;	552	dSP;
496	LOGOP myop;	553	LOGOP myop;
497		554
498	/* I have no idea why this is needed, but it is */
499	PUSHMARK (SP);
500
501	SvREFCNT_dec (GvAV (PL_defgv));	555	SvREFCNT_dec (GvAV (PL_defgv));
502	GvAV (PL_defgv) = coro->args; coro->args = 0;	556	GvAV (PL_defgv) = coro->args; coro->args = 0;
503		557
504	Zero (&myop, 1, LOGOP);	558	Zero (&myop, 1, LOGOP);
505	myop.op_next = Nullop;	559	myop.op_next = Nullop;
506	myop.op_flags = OPf_WANT_VOID;	560	myop.op_flags = OPf_WANT_VOID;
507		561
508	PL_op = (OP *)&myop;
509
510	PUSHMARK (SP);	562	PUSHMARK (SP);
511	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));
512	PUTBACK;	564	PUTBACK;
		565	PL_op = (OP *)&myop;
513	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
514	SPAGAIN;	567	SPAGAIN;
515
516	ENTER; /* necessary e.g. for dounwind */
517	}	568	}
		569
		570	ENTER; /* necessary e.g. for dounwind */
518	}	571	}
519		572
520	static void	573	static void
521	free_coro_mortal ()	574	free_coro_mortal ()
522	{	575	{
…		…
525	SvREFCNT_dec (coro_mortal);	578	SvREFCNT_dec (coro_mortal);
526	coro_mortal = 0;	579	coro_mortal = 0;
527	}	580	}
528	}	581	}
529		582
		583	/* inject a fake call to Coro::State::_cctx_init into the execution */
530	static void NOINLINE	584	static void NOINLINE
531	prepare_cctx (coro_cctx *cctx)	585	prepare_cctx (coro_cctx *cctx)
532	{	586	{
533	dSP;	587	dSP;
534	LOGOP myop;	588	LOGOP myop;
535		589
536	Zero (&myop, 1, LOGOP);	590	Zero (&myop, 1, LOGOP);
537	myop.op_next = PL_op;	591	myop.op_next = PL_op;
538	myop.op_flags = OPf_WANT_VOID;	592	myop.op_flags = OPf_WANT_VOID \| OPf_STACKED;
539
540	sv_setiv (get_sv ("Coro::State::_cctx", FALSE), PTR2IV (cctx));
541		593
542	PUSHMARK (SP);	594	PUSHMARK (SP);
		595	EXTEND (SP, 2);
		596	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));
543	XPUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	597	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
544	PUTBACK;	598	PUTBACK;
		599	PL_op = (OP *)&myop;
545	PL_restartop = PL_ppaddr[OP_ENTERSUB](aTHX);	600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
546	SPAGAIN;	601	SPAGAIN;
547	}	602	}
548		603
549	static void	604	static void
550	coro_run (void *arg)	605	coro_run (void *arg)
551	{	606	{
552	/* coro_run is the alternative epilogue of transfer() */	607	/* coro_run is the alternative tail of transfer(), so unlock here. */
553	UNLOCK;	608	UNLOCK;
554		609
555	/*	610	/*
556	* this is a _very_ stripped down perl interpreter ;)	611	* this is a _very_ stripped down perl interpreter ;)
557	*/	612	*/
…		…
559		614
560	/* inject call to cctx_init */	615	/* inject call to cctx_init */
561	prepare_cctx ((coro_cctx *)arg);	616	prepare_cctx ((coro_cctx *)arg);
562		617
563	/* 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;
564	perl_run (PL_curinterp);	620	perl_run (PL_curinterp);
565		621
566	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);
567	abort ();	623	abort ();
568	}	624	}
569		625
570	static coro_cctx *	626	static coro_cctx *
571	cctx_new ()	627	cctx_new ()
572	{	628	{
573	coro_cctx *cctx;	629	coro_cctx *cctx;
		630	void *stack_start;
		631	size_t stack_size;
574		632
575	++cctx_count;	633	++cctx_count;
576		634
577	New (0, cctx, 1, coro_cctx);	635	Newz (0, cctx, 1, coro_cctx);
578		636
579	#if HAVE_MMAP	637	#if HAVE_MMAP
580		638
581	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	639	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
582	/* mmap suppsedly does allocate-on-write for us */	640	/* mmap supposedly does allocate-on-write for us */
583	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	641	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
584		642
585	if (cctx->sptr == (void *)-1)	643	if (cctx->sptr != (void *)-1)
586	{
587	perror ("FATAL: unable to mmap stack for coroutine");
588	_exit (EXIT_FAILURE);
589	}	644	{
590
591	# if STACKGUARD	645	# if CORO_STACKGUARD
592	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	646	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
593	# endif	647	# endif
		648	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		649	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		650	cctx->mapped = 1;
		651	}
		652	else
		653	#endif
		654	{
		655	cctx->ssize = coro_stacksize * (long)sizeof (long);
		656	New (0, cctx->sptr, coro_stacksize, long);
594		657
595	#else
596
597	cctx->ssize = STACKSIZE * (long)sizeof (long);
598	New (0, cctx->sptr, STACKSIZE, long);
599
600	if (!cctx->sptr)	658	if (!cctx->sptr)
601	{	659	{
602	perror ("FATAL: unable to malloc stack for coroutine");	660	perror ("FATAL: unable to allocate stack for coroutine");
603	_exit (EXIT_FAILURE);	661	_exit (EXIT_FAILURE);
604	}	662	}
605		663
606	#endif	664	stack_start = cctx->sptr;
		665	stack_size = cctx->ssize;
		666	}
607		667
608	#if USE_VALGRIND	668	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
609	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
610	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
611	cctx->ssize + (char *)cctx->sptr
612	);
613	#endif
614
615	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	669	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
616		670
617	return cctx;	671	return cctx;
618	}	672	}
619		673
620	static void	674	static void
…		…
623	if (!cctx)	677	if (!cctx)
624	return;	678	return;
625		679
626	--cctx_count;	680	--cctx_count;
627		681
628	#if USE_VALGRIND	682	#if CORO_USE_VALGRIND
629	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	683	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
630	#endif	684	#endif
631		685
632	#if HAVE_MMAP	686	#if HAVE_MMAP
		687	if (cctx->mapped)
633	munmap (cctx->sptr, cctx->ssize);	688	munmap (cctx->sptr, cctx->ssize);
634	#else	689	else
		690	#endif
635	Safefree (cctx->sptr);	691	Safefree (cctx->sptr);
636	#endif
637		692
638	Safefree (cctx);	693	Safefree (cctx);
639	}	694	}
640		695
641	static coro_cctx *	696	static coro_cctx *
642	cctx_get ()	697	cctx_get ()
643	{	698	{
644	coro_cctx *cctx;
645
646	if (cctx_first)	699	while (cctx_first)
647	{	700	{
648	cctx = cctx_first;	701	coro_cctx *cctx = cctx_first;
649	cctx_first = cctx->next;	702	cctx_first = cctx->next;
650	--cctx_idle;	703	--cctx_idle;
		704
		705	if (cctx->ssize >= coro_stacksize)
		706	return cctx;
		707
		708	cctx_destroy (cctx);
651	}	709	}
652	else	710
653	{
654	cctx = cctx_new ();
655	PL_op = PL_op->op_next;	711	PL_op = PL_op->op_next;
656	}
657
658	return cctx;	712	return cctx_new ();
659	}	713	}
660		714
661	static void	715	static void
662	cctx_put (coro_cctx *cctx)	716	cctx_put (coro_cctx *cctx)
663	{	717	{
…		…
675	++cctx_idle;	729	++cctx_idle;
676	cctx->next = cctx_first;	730	cctx->next = cctx_first;
677	cctx_first = cctx;	731	cctx_first = cctx;
678	}	732	}
679		733
		734	/ coroutine switching ***************************************************/
		735
680	/* never call directly, always through the coro_state_transfer global variable */	736	/* never call directly, always through the coro_state_transfer global variable */
681	static void NOINLINE	737	static void NOINLINE
682	transfer (struct coro prev, struct coro next, int flags)	738	transfer (struct coro prev, struct coro next)
683	{	739	{
684	dSTACKLEVEL;	740	dSTACKLEVEL;
685		741
686	/* sometimes transfer is only called to set idle_sp */	742	/* sometimes transfer is only called to set idle_sp */
687	if (flags == TRANSFER_SET_STACKLEVEL)	743	if (!next)
		744	{
688	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	745	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		746	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		747	}
689	else if (prev != next)	748	else if (prev != next)
690	{	749	{
691	coro_cctx *prev__cctx;	750	coro_cctx *prev__cctx;
692		751
693	if (!prev->cctx)	752	if (prev->flags & CF_NEW)
694	{	753	{
695	/* create a new empty context */	754	/* create a new empty context */
696	Newz (0, prev->cctx, 1, coro_cctx);	755	Newz (0, prev->cctx, 1, coro_cctx);
697	prev->cctx->inuse = 1;	756	prev->cctx->inuse = 1;
		757	prev->flags &= ~CF_NEW;
698	prev->flags \|= CF_RUNNING;	758	prev->flags \|= CF_RUNNING;
699	}	759	}
700		760
		761	/TODO: must not croak here /
701	if (!prev->flags & CF_RUNNING)	762	if (!prev->flags & CF_RUNNING)
702	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	763	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
703		764
704	if (next->flags & CF_RUNNING)	765	if (next->flags & CF_RUNNING)
705	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	766	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
706		767
		768	if (next->flags & CF_DESTROYED)
		769	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		770
707	prev->flags &= ~CF_RUNNING;	771	prev->flags &= ~CF_RUNNING;
708	next->flags \|= CF_RUNNING;	772	next->flags \|= CF_RUNNING;
709		773
710	LOCK;	774	LOCK;
711		775
712	if (next->mainstack)	776	if (next->flags & CF_NEW)
713	{	777	{
714	/* coroutine already started */	778	/* need to start coroutine */
715	SAVE (prev, flags);	779	next->flags &= ~CF_NEW;
716	LOAD (next);	780	/* first get rid of the old state */
		781	save_perl (prev);
		782	/* setup coroutine call */
		783	setup_coro (next);
		784	/* need a new stack */
		785	assert (!next->cctx);
717	}	786	}
718	else	787	else
719	{	788	{
720	/* need to start coroutine */	789	/* coroutine already started */
721	/* first get rid of the old state */	790	save_perl (prev);
722	SAVE (prev, -1);	791	load_perl (next);
723	/* setup coroutine call */
724	setup_coro (next);
725	/* need a new stack */
726	assert (!next->stack);
727	}	792	}
728		793
729	prev__cctx = prev->cctx;	794	prev__cctx = prev->cctx;
730		795
731	/* possibly "free" the cctx */	796	/* possibly "free" the cctx */
732	if (prev__cctx->idle_sp == STACKLEVEL)	797	if (prev__cctx->idle_sp == STACKLEVEL)
733	{	798	{
734	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	799	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
735	assert (PL_top_env == prev__cctx->top_env);	800	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
		801
		802	prev->cctx = 0;
736		803
737	cctx_put (prev__cctx);	804	cctx_put (prev__cctx);
738	prev->cctx = 0;	805	prev__cctx->inuse = 0;
739	}	806	}
740		807
741	if (!next->cctx)	808	if (!next->cctx)
		809	{
742	next->cctx = cctx_get ();	810	next->cctx = cctx_get ();
		811	assert (!next->cctx->inuse);
		812	next->cctx->inuse = 1;
		813	}
743		814
744	if (prev__cctx != next->cctx)	815	if (prev__cctx != next->cctx)
745	{	816	{
746	assert ( prev__cctx->inuse);
747	assert (!next->cctx->inuse);
748
749	prev__cctx->inuse = 0;
750	next->cctx->inuse = 1;
751
752	prev__cctx->top_env = PL_top_env;	817	prev__cctx->top_env = PL_top_env;
753	PL_top_env = next->cctx->top_env;	818	PL_top_env = next->cctx->top_env;
754	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	819	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
755	}	820	}
756		821
757	free_coro_mortal ();	822	free_coro_mortal ();
758
759	UNLOCK;	823	UNLOCK;
760	}	824	}
761	}	825	}
762		826
763	struct transfer_args	827	struct transfer_args
764	{	828	{
765	struct coro prev, next;	829	struct coro prev, next;
766	int flags;
767	};	830	};
768		831
769	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	832	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)
770		833
		834	/ high level stuff ******************************************************/
		835
771	static void	836	static int
772	coro_state_destroy (struct coro *coro)	837	coro_state_destroy (struct coro *coro)
773	{	838	{
774	if (coro->refcnt--)	839	if (coro->flags & CF_DESTROYED)
775	return;	840	return 0;
776		841
		842	coro->flags \|= CF_DESTROYED;
		843
777	if (coro->flags & CF_RUNNING)	844	if (coro->flags & CF_READY)
778	croak ("FATAL: tried to destroy currently running coroutine");	845	{
		846	/* reduce nready, as destroying a ready coro effectively unreadies it */
		847	/* alternative: look through all ready queues and remove the coro */
		848	LOCK;
		849	--coro_nready;
		850	UNLOCK;
		851	}
		852	else
		853	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
779		854
780	if (coro->mainstack && coro->mainstack != main_mainstack)	855	if (coro->mainstack && coro->mainstack != main_mainstack)
781	{	856	{
782	struct coro temp;	857	struct coro temp;
783		858
784	SAVE ((&temp), TRANSFER_SAVE_ALL);	859	assert (!(coro->flags & CF_RUNNING));
785	LOAD (coro);	860
		861	Zero (&temp, 1, struct coro);
		862	temp.save = CORO_SAVE_ALL;
		863
		864	if (coro->flags & CF_RUNNING)
		865	croak ("FATAL: tried to destroy currently running coroutine");
		866
		867	save_perl (&temp);
		868	load_perl (coro);
786		869
787	coro_destroy_stacks ();	870	coro_destroy_stacks ();
788		871
789	LOAD ((&temp)); /* this will get rid of defsv etc.. */	872	load_perl (&temp); /* this will get rid of defsv etc.. */
790		873
791	coro->mainstack = 0;	874	coro->mainstack = 0;
792	}	875	}
793		876
794	cctx_destroy (coro->cctx);	877	cctx_destroy (coro->cctx);
795	SvREFCNT_dec (coro->args);	878	SvREFCNT_dec (coro->args);
796	Safefree (coro);	879
		880	return 1;
797	}	881	}
798		882
799	static int	883	static int
800	coro_state_clear (pTHX_ SV sv, MAGIC mg)	884	coro_state_free (pTHX_ SV sv, MAGIC mg)
801	{	885	{
802	struct coro coro = (struct coro )mg->mg_ptr;	886	struct coro coro = (struct coro )mg->mg_ptr;
803	mg->mg_ptr = 0;	887	mg->mg_ptr = 0;
804		888
		889	if (--coro->refcnt < 0)
		890	{
805	coro_state_destroy (coro);	891	coro_state_destroy (coro);
		892	Safefree (coro);
		893	}
806		894
807	return 0;	895	return 0;
808	}	896	}
809		897
810	static int	898	static int
…		…
817	return 0;	905	return 0;
818	}	906	}
819		907
820	static MGVTBL coro_state_vtbl = {	908	static MGVTBL coro_state_vtbl = {
821	0, 0, 0, 0,	909	0, 0, 0, 0,
822	coro_state_clear,	910	coro_state_free,
823	0,	911	0,
824	#ifdef MGf_DUP	912	#ifdef MGf_DUP
825	coro_state_dup,	913	coro_state_dup,
826	#else	914	#else
827	# define MGf_DUP 0	915	# define MGf_DUP 0
…		…
843	/* very slow, but rare, check */	931	/* very slow, but rare, check */
844	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	932	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
845	croak ("Coro::State object required");	933	croak ("Coro::State object required");
846	}	934	}
847		935
848	mg = SvMAGIC (coro);	936	mg = CORO_MAGIC (coro);
849	assert (mg->mg_type == PERL_MAGIC_ext);
850	return (struct coro *)mg->mg_ptr;	937	return (struct coro *)mg->mg_ptr;
851	}	938	}
852		939
853	static void	940	static void
854	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	941	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)
855	{	942	{
856	ta->prev = SvSTATE (prev);	943	ta->prev = SvSTATE (prev_sv);
857	ta->next = SvSTATE (next);	944	ta->next = SvSTATE (next_sv);
858	ta->flags = flags;
859	}	945	}
860		946
861	static void	947	static void
862	api_transfer (SV prev, SV next, int flags)	948	api_transfer (SV prev_sv, SV next_sv)
863	{	949	{
864	dTHX;
865	struct transfer_args ta;	950	struct transfer_args ta;
866		951
867	prepare_transfer (&ta, prev, next, flags);	952	prepare_transfer (&ta, prev_sv, next_sv);
868	TRANSFER (ta);	953	TRANSFER (ta);
869	}	954	}
870		955
		956	static int
		957	api_save (SV *coro_sv, int new_save)
		958	{
		959	struct coro *coro = SvSTATE (coro_sv);
		960	int old_save = coro->save;
		961
		962	if (new_save >= 0)
		963	coro->save = new_save;
		964
		965	return old_save;
		966	}
		967
871	/ Coro ******************************************************************/	968	/ Coro ******************************************************************/
872		969
873	#define PRIO_MAX 3
874	#define PRIO_HIGH 1
875	#define PRIO_NORMAL 0
876	#define PRIO_LOW -1
877	#define PRIO_IDLE -3
878	#define PRIO_MIN -4
879
880	/* for Coro.pm */
881	static GV coro_current, coro_idle;
882	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
883	static int coro_nready;
884
885	static void	970	static void
886	coro_enq (SV *coro_sv)	971	coro_enq (SV *coro_sv)
887	{	972	{
888	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	973	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
889	coro_nready++;
890	}	974	}
891		975
892	static SV *	976	static SV *
893	coro_deq (int min_prio)	977	coro_deq (int min_prio)
894	{	978	{
…		…
898	if (min_prio < 0)	982	if (min_prio < 0)
899	min_prio = 0;	983	min_prio = 0;
900		984
901	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	985	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
902	if (AvFILLp (coro_ready [prio]) >= 0)	986	if (AvFILLp (coro_ready [prio]) >= 0)
903	{
904	coro_nready--;
905	return av_shift (coro_ready [prio]);	987	return av_shift (coro_ready [prio]);
906	}
907		988
908	return 0;	989	return 0;
909	}	990	}
910		991
911	static int	992	static int
…		…
919	coro = SvSTATE (coro_sv);	1000	coro = SvSTATE (coro_sv);
920		1001
921	if (coro->flags & CF_READY)	1002	if (coro->flags & CF_READY)
922	return 0;	1003	return 0;
923		1004
924	if (coro->flags & CF_RUNNING)
925	croak ("Coro::ready called on currently running coroutine");
926
927	coro->flags \|= CF_READY;	1005	coro->flags \|= CF_READY;
928		1006
929	LOCK;	1007	LOCK;
930	coro_enq (SvREFCNT_inc (coro_sv));	1008	coro_enq (SvREFCNT_inc (coro_sv));
		1009	++coro_nready;
931	UNLOCK;	1010	UNLOCK;
932		1011
933	return 1;	1012	return 1;
934	}	1013	}
935		1014
936	static int	1015	static int
937	api_is_ready (SV *coro_sv)	1016	api_is_ready (SV *coro_sv)
938	{	1017	{
939	return !!SvSTATE (coro_sv)->flags & CF_READY;	1018	return !!(SvSTATE (coro_sv)->flags & CF_READY);
940	}	1019	}
941		1020
942	static void	1021	static void
943	prepare_schedule (struct transfer_args *ta)	1022	prepare_schedule (struct transfer_args *ta)
944	{	1023	{
945	SV current, prev, *next;	1024	SV prev_sv, next_sv;
946
947	current = GvSV (coro_current);
948		1025
949	for (;;)	1026	for (;;)
950	{	1027	{
951	LOCK;	1028	LOCK;
952	next = coro_deq (PRIO_MIN);	1029	next_sv = coro_deq (PRIO_MIN);
		1030
		1031	/* nothing to schedule: call the idle handler */
		1032	if (!next_sv)
		1033	{
		1034	dSP;
		1035	UNLOCK;
		1036
		1037	ENTER;
		1038	SAVETMPS;
		1039
		1040	PUSHMARK (SP);
		1041	PUTBACK;
		1042	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1043
		1044	FREETMPS;
		1045	LEAVE;
		1046	continue;
		1047	}
		1048
		1049	ta->next = SvSTATE (next_sv);
		1050
		1051	/* cannot transfer to destroyed coros, skip and look for next */
		1052	if (ta->next->flags & CF_DESTROYED)
		1053	{
		1054	UNLOCK;
		1055	SvREFCNT_dec (next_sv);
		1056	/* coro_nready is already taken care of by destroy */
		1057	continue;
		1058	}
		1059
		1060	--coro_nready;
953	UNLOCK;	1061	UNLOCK;
954
955	if (next)
956	break;	1062	break;
957
958	{
959	dSP;
960
961	ENTER;
962	SAVETMPS;
963
964	PUSHMARK (SP);
965	PUTBACK;
966	call_sv (GvSV (coro_idle), G_DISCARD);
967
968	FREETMPS;
969	LEAVE;
970	}	1063	}
971	}
972
973	prev = SvRV (current);
974	SvRV (current) = next;
975		1064
976	/* free this only after the transfer */	1065	/* free this only after the transfer */
		1066	prev_sv = SvRV (coro_current);
		1067	SvRV_set (coro_current, next_sv);
		1068	ta->prev = SvSTATE (prev_sv);
		1069
		1070	assert (ta->next->flags & CF_READY);
		1071	ta->next->flags &= ~CF_READY;
		1072
977	LOCK;	1073	LOCK;
978	free_coro_mortal ();	1074	free_coro_mortal ();
		1075	coro_mortal = prev_sv;
979	UNLOCK;	1076	UNLOCK;
980	coro_mortal = prev;
981
982	ta->prev = SvSTATE (prev);
983	ta->next = SvSTATE (next);
984	ta->flags = TRANSFER_SAVE_ALL;
985
986	ta->next->flags &= ~CF_READY;
987	}	1077	}
988		1078
989	static void	1079	static void
990	prepare_cede (struct transfer_args *ta)	1080	prepare_cede (struct transfer_args *ta)
991	{	1081	{
992	api_ready (GvSV (coro_current));	1082	api_ready (coro_current);
993
994	prepare_schedule (ta);	1083	prepare_schedule (ta);
995	}	1084	}
996		1085
		1086	static int
		1087	prepare_cede_notself (struct transfer_args *ta)
		1088	{
		1089	if (coro_nready)
		1090	{
		1091	SV *prev = SvRV (coro_current);
		1092	prepare_schedule (ta);
		1093	api_ready (prev);
		1094	return 1;
		1095	}
		1096	else
		1097	return 0;
		1098	}
		1099
997	static void	1100	static void
998	api_schedule (void)	1101	api_schedule (void)
999	{	1102	{
1000	dTHX;
1001	struct transfer_args ta;	1103	struct transfer_args ta;
1002		1104
1003	prepare_schedule (&ta);	1105	prepare_schedule (&ta);
1004	TRANSFER (ta);	1106	TRANSFER (ta);
1005	}	1107	}
1006		1108
1007	static void	1109	static int
1008	api_cede (void)	1110	api_cede (void)
1009	{	1111	{
1010	dTHX;
1011	struct transfer_args ta;	1112	struct transfer_args ta;
1012		1113
1013	prepare_cede (&ta);	1114	prepare_cede (&ta);
		1115
		1116	if (ta.prev != ta.next)
		1117	{
1014	TRANSFER (ta);	1118	TRANSFER (ta);
		1119	return 1;
		1120	}
		1121	else
		1122	return 0;
		1123	}
		1124
		1125	static int
		1126	api_cede_notself (void)
		1127	{
		1128	struct transfer_args ta;
		1129
		1130	if (prepare_cede_notself (&ta))
		1131	{
		1132	TRANSFER (ta);
		1133	return 1;
		1134	}
		1135	else
		1136	return 0;
1015	}	1137	}
1016		1138
1017	MODULE = Coro::State PACKAGE = Coro::State	1139	MODULE = Coro::State PACKAGE = Coro::State
1018		1140
1019	PROTOTYPES: DISABLE	1141	PROTOTYPES: DISABLE
…		…
1025	#endif	1147	#endif
1026	BOOT_PAGESIZE;	1148	BOOT_PAGESIZE;
1027		1149
1028	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1150	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1029		1151
1030	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1152	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1031	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1153	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1032	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1154	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1155	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1156	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1033		1157
1034	main_mainstack = PL_mainstack;	1158	main_mainstack = PL_mainstack;
1035		1159
1036	coroapi.ver = CORO_API_VERSION;	1160	coroapi.ver = CORO_API_VERSION;
1037	coroapi.transfer = api_transfer;	1161	coroapi.transfer = api_transfer;
…		…
1047	HV *hv;	1171	HV *hv;
1048	int i;	1172	int i;
1049		1173
1050	Newz (0, coro, 1, struct coro);	1174	Newz (0, coro, 1, struct coro);
1051	coro->args = newAV ();	1175	coro->args = newAV ();
		1176	coro->save = CORO_SAVE_ALL;
		1177	coro->flags = CF_NEW;
1052		1178
1053	hv = newHV ();	1179	hv = newHV ();
1054	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1180	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1055	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1181	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1056		1182
1057	for (i = 1; i < items; i++)	1183	for (i = 1; i < items; i++)
1058	av_push (coro->args, newSVsv (ST (i)));	1184	av_push (coro->args, newSVsv (ST (i)));
1059	}	1185	}
1060	OUTPUT:	1186	OUTPUT:
		1187	RETVAL
		1188
		1189	int
		1190	save (SV *coro, int new_save = -1)
		1191	CODE:
		1192	RETVAL = api_save (coro, new_save);
		1193	OUTPUT:
1061	RETVAL	1194	RETVAL
1062		1195
1063	void	1196	void
1064	_set_stacklevel (...)	1197	_set_stacklevel (...)
1065	ALIAS:	1198	ALIAS:
1066	Coro::State::transfer = 1	1199	Coro::State::transfer = 1
1067	Coro::schedule = 2	1200	Coro::schedule = 2
1068	Coro::cede = 3	1201	Coro::cede = 3
1069	Coro::Cont::yield = 4	1202	Coro::cede_notself = 4
1070	CODE:	1203	CODE:
1071	{	1204	{
1072	struct transfer_args ta;	1205	struct transfer_args ta;
1073		1206
1074	switch (ix)	1207	switch (ix)
1075	{	1208	{
1076	case 0:	1209	case 0:
1077	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1210	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1078	ta.next = 0;	1211	ta.next = 0;
1079	ta.flags = TRANSFER_SET_STACKLEVEL;
1080	break;	1212	break;
1081		1213
1082	case 1:	1214	case 1:
1083	if (items != 3)	1215	if (items != 2)
1084	croak ("Coro::State::transfer(prev,next,flags) expects three arguments, not %d", items);	1216	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1085		1217
1086	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1218	prepare_transfer (&ta, ST (0), ST (1));
1087	break;	1219	break;
1088		1220
1089	case 2:	1221	case 2:
1090	prepare_schedule (&ta);	1222	prepare_schedule (&ta);
1091	break;	1223	break;
…		…
1093	case 3:	1225	case 3:
1094	prepare_cede (&ta);	1226	prepare_cede (&ta);
1095	break;	1227	break;
1096		1228
1097	case 4:	1229	case 4:
1098	{	1230	if (!prepare_cede_notself (&ta))
1099	SV *yieldstack;	1231	XSRETURN_EMPTY;
1100	SV *sv;
1101	AV *defav = GvAV (PL_defgv);
1102		1232
1103	yieldstack = *hv_fetch (
1104	(HV *)SvRV (GvSV (coro_current)),
1105	"yieldstack", sizeof ("yieldstack") - 1,
1106	0
1107	);
1108
1109	/* set up @_ -- ugly */
1110	av_clear (defav);
1111	av_fill (defav, items - 1);
1112	while (items--)
1113	av_store (defav, items, SvREFCNT_inc (ST(items)));
1114
1115	sv = av_pop ((AV *)SvRV (yieldstack));
1116	ta.prev = SvSTATE (av_fetch ((AV )SvRV (sv), 0, 0));
1117	ta.next = SvSTATE (av_fetch ((AV )SvRV (sv), 1, 0));
1118	ta.flags = 0;
1119	SvREFCNT_dec (sv);
1120	}
1121	break;	1233	break;
1122
1123	}	1234	}
1124		1235
		1236	BARRIER;
1125	TRANSFER (ta);	1237	TRANSFER (ta);
1126	}
1127		1238
1128	void	1239	if (GIMME_V != G_VOID && ta.next != ta.prev)
1129	_clone_state_from (SV dst, SV src)	1240	XSRETURN_YES;
		1241	}
		1242
		1243	bool
		1244	_destroy (SV *coro_sv)
1130	CODE:	1245	CODE:
1131	{	1246	RETVAL = coro_state_destroy (SvSTATE (coro_sv));
1132	struct coro *coro_src = SvSTATE (src);	1247	OUTPUT:
1133		1248	RETVAL
1134	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1135
1136	++coro_src->refcnt;
1137	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1138	}
1139		1249
1140	void	1250	void
1141	_exit (code)	1251	_exit (code)
1142	int code	1252	int code
1143	PROTOTYPE: $	1253	PROTOTYPE: $
1144	CODE:	1254	CODE:
1145	_exit (code);	1255	_exit (code);
1146		1256
1147	int	1257	int
		1258	cctx_stacksize (int new_stacksize = 0)
		1259	CODE:
		1260	RETVAL = coro_stacksize;
		1261	if (new_stacksize)
		1262	coro_stacksize = new_stacksize;
		1263	OUTPUT:
		1264	RETVAL
		1265
		1266	int
1148	cctx_count ()	1267	cctx_count ()
1149	CODE:	1268	CODE:
1150	RETVAL = cctx_count;	1269	RETVAL = cctx_count;
1151	OUTPUT:	1270	OUTPUT:
1152	RETVAL	1271	RETVAL
…		…
1171	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1290	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1172	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1291	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1173	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1292	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1174	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1293	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1175		1294
1176	coro_current = gv_fetchpv ("Coro::current", TRUE, SVt_PV);	1295	coro_current = get_sv ("Coro::current", FALSE);
1177	coro_idle = gv_fetchpv ("Coro::idle" , TRUE, SVt_PV);	1296	SvREADONLY_on (coro_current);
1178		1297
1179	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1298	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1180	coro_ready[i] = newAV ();	1299	coro_ready[i] = newAV ();
1181		1300
1182	{	1301	{
1183	SV *sv = perl_get_sv("Coro::API", 1);	1302	SV *sv = perl_get_sv("Coro::API", 1);
1184		1303
1185	coroapi.schedule = api_schedule;	1304	coroapi.schedule = api_schedule;
		1305	coroapi.save = api_save;
1186	coroapi.cede = api_cede;	1306	coroapi.cede = api_cede;
		1307	coroapi.cede_notself = api_cede_notself;
1187	coroapi.ready = api_ready;	1308	coroapi.ready = api_ready;
1188	coroapi.is_ready = api_is_ready;	1309	coroapi.is_ready = api_is_ready;
1189	coroapi.nready = &coro_nready;	1310	coroapi.nready = &coro_nready;
1190	coroapi.current = coro_current;	1311	coroapi.current = coro_current;
1191		1312
1192	GCoroAPI = &coroapi;	1313	GCoroAPI = &coroapi;
1193	sv_setiv (sv, (IV)&coroapi);	1314	sv_setiv (sv, (IV)&coroapi);
1194	SvREADONLY_on (sv);	1315	SvREADONLY_on (sv);
1195	}	1316	}
1196	}	1317	}
		1318
		1319	void
		1320	_set_current (SV *current)
		1321	PROTOTYPE: $
		1322	CODE:
		1323	SvREFCNT_dec (SvRV (coro_current));
		1324	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1197		1325
1198	int	1326	int
1199	prio (Coro::State coro, int newprio = 0)	1327	prio (Coro::State coro, int newprio = 0)
1200	ALIAS:	1328	ALIAS:
1201	nice = 1	1329	nice = 1
…		…
1204	RETVAL = coro->prio;	1332	RETVAL = coro->prio;
1205		1333
1206	if (items > 1)	1334	if (items > 1)
1207	{	1335	{
1208	if (ix)	1336	if (ix)
1209	newprio += coro->prio;	1337	newprio = coro->prio - newprio;
1210		1338
1211	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1339	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1212	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1340	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1213		1341
1214	coro->prio = newprio;	1342	coro->prio = newprio;
1215	}	1343	}
1216	}	1344	}
		1345	OUTPUT:
		1346	RETVAL
1217		1347
1218	SV *	1348	SV *
1219	ready (SV *self)	1349	ready (SV *self)
1220	PROTOTYPE: $	1350	PROTOTYPE: $
1221	CODE:	1351	CODE:
…		…
1243		1373
1244	SV *	1374	SV *
1245	_get_state ()	1375	_get_state ()
1246	CODE:	1376	CODE:
1247	{	1377	{
1248	struct {	1378	struct io_state *data;
1249	int errorno;
1250	int laststype;
1251	int laststatval;
1252	Stat_t statcache;
1253	} data;
1254		1379
		1380	RETVAL = newSV (sizeof (struct io_state));
		1381	data = (struct io_state *)SvPVX (RETVAL);
		1382	SvCUR_set (RETVAL, sizeof (struct io_state));
		1383	SvPOK_only (RETVAL);
		1384
1255	data.errorno = errno;	1385	data->errorno = errno;
1256	data.laststype = PL_laststype;	1386	data->laststype = PL_laststype;
1257	data.laststatval = PL_laststatval;	1387	data->laststatval = PL_laststatval;
1258	data.statcache = PL_statcache;	1388	data->statcache = PL_statcache;
1259
1260	RETVAL = newSVpvn ((char *)&data, sizeof data);
1261	}	1389	}
1262	OUTPUT:	1390	OUTPUT:
1263	RETVAL	1391	RETVAL
1264		1392
1265	void	1393	void
1266	_set_state (char *data_)	1394	_set_state (char *data_)
1267	PROTOTYPE: $	1395	PROTOTYPE: $
1268	CODE:	1396	CODE:
1269	{	1397	{
1270	struct {	1398	struct io_state data = (void )data_;
1271	int errorno;
1272	int laststype;
1273	int laststatval;
1274	Stat_t statcache;
1275	} data = (void )data_;
1276		1399
1277	errno = data->errorno;	1400	errno = data->errorno;
1278	PL_laststype = data->laststype;	1401	PL_laststype = data->laststype;
1279	PL_laststatval = data->laststatval;	1402	PL_laststatval = data->laststatval;
1280	PL_statcache = data->statcache;	1403	PL_statcache = data->statcache;
1281	}	1404	}
		1405

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Comparing Coro/Coro/State.xs (file contents): Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC vs. Revision 1.145 by root, Mon Mar 12 21:40:14 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.116 by root, Fri Dec 1 14:01:43 2006 UTC vs.
Revision 1.145 by root, Mon Mar 12 21:40:14 2007 UTC