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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs.
Revision 1.146 by root, Sat Mar 17 19:51:57 2007 UTC

…		…
1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
7	#include "patchlevel.h"	9	#include "patchlevel.h"
8		10
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>	11	#include <stdio.h>
44	#include <errno.h>	12	#include <errno.h>
45		13	#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		14
54	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
55	# include <unistd.h>	16	# include <unistd.h>
56	# include <sys/mman.h>	17	# include <sys/mman.h>
57	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
72	#else	33	#else
73	# define PAGESIZE 0	34	# define PAGESIZE 0
74	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
75	#endif	36	#endif
76		37
		38	#if CORO_USE_VALGRIND
		39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
		43	#endif
		44
		45	/* the maximum number of idle cctx that will be pooled */
		46	#define MAX_IDLE_CCTX 8
		47
		48	#define PERL_VERSION_ATLEAST(a,b,c) \
		49	(PERL_REVISION > (a) \
		50	\|\| (PERL_REVISION == (a) \
		51	&& (PERL_VERSION > (b) \
		52	\|\| (PERL_VERSION == (b) && PERLSUBVERSION >= (c)))))
		53
		54	#if !PERL_VERSION_ATLEAST (5,6,0)
		55	# ifndef PL_ppaddr
		56	# define PL_ppaddr ppaddr
		57	# endif
		58	# ifndef call_sv
		59	# define call_sv perl_call_sv
		60	# endif
		61	# ifndef get_sv
		62	# define get_sv perl_get_sv
		63	# endif
		64	# ifndef get_cv
		65	# define get_cv perl_get_cv
		66	# endif
		67	# ifndef IS_PADGV
		68	# define IS_PADGV(v) 0
		69	# endif
		70	# ifndef IS_PADCONST
		71	# define IS_PADCONST(v) 0
		72	# endif
		73	#endif
		74
		75	/* 5.8.7 */
		76	#ifndef SvRV_set
		77	# define SvRV_set(s,v) SvRV(s) = (v)
		78	#endif
		79
		80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
		81	# undef CORO_STACKGUARD
		82	#endif
		83
		84	#ifndef CORO_STACKGUARD
		85	# define CORO_STACKGUARD 0
		86	#endif
		87
		88	/* prefer perl internal functions over our own? */
		89	#ifndef CORO_PREFER_PERL_FUNCTIONS
		90	# define CORO_PREFER_PERL_FUNCTIONS 0
		91	#endif
		92
77	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* 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	94	* to the current C stack pointer. Its property is that it changes with each call
79	* and should be unique. */	95	* and should be unique. */
80	#define dSTACKLEVEL int stacklevel	96	#define dSTACKLEVEL int stacklevel
81	#define STACKLEVEL ((void *)&stacklevel)	97	#define STACKLEVEL ((void *)&stacklevel)
82		98
83	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
84		100
85	#if __GNUC__ >= 3	101	#if __GNUC__ >= 3
86	# define attribute(x) __attribute__(x)	102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
87	#else	104	#else
88	# define attribute(x)	105	# define attribute(x)
		106	# define BARRIER
89	#endif	107	#endif
90		108
91	#define NOINLINE attribute ((noinline))	109	#define NOINLINE attribute ((noinline))
92		110
93	#include "CoroAPI.h"	111	#include "CoroAPI.h"
94
95	#define TRANSFER_SET_STACKLEVEL 0x8bfbfbfb /* magic cookie */
96		112
97	#ifdef USE_ITHREADS	113	#ifdef USE_ITHREADS
98	static perl_mutex coro_mutex;	114	static perl_mutex coro_mutex;
99	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	115	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)
100	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	116	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)
101	#else	117	#else
102	# define LOCK (void)0	118	# define LOCK (void)0
103	# define UNLOCK (void)0	119	# define UNLOCK (void)0
104	#endif	120	#endif
105		121
		122	/* helper storage struct for Coro::AIO */
106	struct io_state	123	struct io_state
107	{	124	{
108	int errorno;	125	int errorno;
109	I32 laststype;	126	I32 laststype;
110	int laststatval;	127	int laststatval;
111	Stat_t statcache;	128	Stat_t statcache;
112	};	129	};
113		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
114	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
115	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
116	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
117	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
118		136
…		…
123	typedef struct coro_cctx {	141	typedef struct coro_cctx {
124	struct coro_cctx *next;	142	struct coro_cctx *next;
125		143
126	/* the stack */	144	/* the stack */
127	void *sptr;	145	void *sptr;
128	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
129		147
130	/* cpu state */	148	/* cpu state */
131	void idle_sp; / sp of top-level transfer/schedule/cede call */	149	void idle_sp; / sp of top-level transfer/schedule/cede call */
		150	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
132	JMPENV *top_env;	151	JMPENV *top_env;
133	coro_context cctx;	152	coro_context cctx;
134		153
135	int inuse;
136
137	#if USE_VALGRIND	154	#if CORO_USE_VALGRIND
138	int valgrind_id;	155	int valgrind_id;
139	#endif	156	#endif
		157	char inuse, mapped;
140	} coro_cctx;	158	} coro_cctx;
141		159
142	enum {	160	enum {
143	CF_RUNNING = 0x0001, /* coroutine is running */	161	CF_RUNNING = 0x0001, /* coroutine is running */
144	CF_READY = 0x0002, /* coroutine is ready */	162	CF_READY = 0x0002, /* coroutine is ready */
145	CF_NEW = 0x0004, /* ahs never been switched to */	163	CF_NEW = 0x0004, /* has never been switched to */
		164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
146	};	165	};
147		166
148	/* this is a structure representing a perl-level coroutine */	167	/* this is a structure representing a perl-level coroutine */
149	struct coro {	168	struct coro {
150	/* the c coroutine allocated to this perl coroutine, if any */	169	/* the c coroutine allocated to this perl coroutine, if any */
151	coro_cctx *cctx;	170	coro_cctx *cctx;
152		171
153	/* data associated with this coroutine (initial args) */	172	/* data associated with this coroutine (initial args) */
154	AV *args;	173	AV *args;
155	int refcnt;	174	int refcnt;
156	int flags;	175	int save; /* CORO_SAVE flags */
		176	int flags; /* CF_ flags */
157		177
158	/* optionally saved, might be zero */	178	/* optionally saved, might be zero */
159	AV *defav;	179	AV defav; / @_ */
160	SV *defsv;	180	SV defsv; / $_ */
161	SV *errsv;	181	SV errsv; / $@ */
		182	SV irssv; / $/ */
		183	SV irssv_sv; / real $/ cache */
162		184
163	#define VAR(name,type) type name;	185	#define VAR(name,type) type name;
164	# include "state.h"	186	# include "state.h"
165	#undef VAR	187	#undef VAR
166		188
…		…
169	};	191	};
170		192
171	typedef struct coro *Coro__State;	193	typedef struct coro *Coro__State;
172	typedef struct coro *Coro__State_or_hashref;	194	typedef struct coro *Coro__State_or_hashref;
173		195
		196	/ Coro ******************************************************************/
		197
		198	#define PRIO_MAX 3
		199	#define PRIO_HIGH 1
		200	#define PRIO_NORMAL 0
		201	#define PRIO_LOW -1
		202	#define PRIO_IDLE -3
		203	#define PRIO_MIN -4
		204
		205	/* for Coro.pm */
		206	static SV *coro_current;
		207	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		208	static int coro_nready;
		209
		210	/ lowlevel stuff ********************************************************/
		211
174	static AV *	212	static AV *
175	coro_clone_padlist (CV *cv)	213	coro_clone_padlist (pTHX_ CV *cv)
176	{	214	{
177	AV *padlist = CvPADLIST (cv);	215	AV *padlist = CvPADLIST (cv);
178	AV newpadlist, newpad;	216	AV newpadlist, newpad;
179		217
180	newpadlist = newAV ();	218	newpadlist = newAV ();
…		…
192		230
193	return newpadlist;	231	return newpadlist;
194	}	232	}
195		233
196	static void	234	static void
197	free_padlist (AV *padlist)	235	free_padlist (pTHX_ AV *padlist)
198	{	236	{
199	/* may be during global destruction */	237	/* may be during global destruction */
200	if (SvREFCNT (padlist))	238	if (SvREFCNT (padlist))
201	{	239	{
202	I32 i = AvFILLp (padlist);	240	I32 i = AvFILLp (padlist);
…		…
223	AV *padlist;	261	AV *padlist;
224	AV av = (AV )mg->mg_obj;	262	AV av = (AV )mg->mg_obj;
225		263
226	/* casting is fun. */	264	/* casting is fun. */
227	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	265	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
228	free_padlist (padlist);	266	free_padlist (aTHX_ padlist);
229		267
230	SvREFCNT_dec (av);	268	SvREFCNT_dec (av);
231		269
232	return 0;	270	return 0;
233	}	271	}
…		…
243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	281	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
244	: 0	282	: 0
245		283
246	/* the next two functions merely cache the padlists */	284	/* the next two functions merely cache the padlists */
247	static void	285	static void
248	get_padlist (CV *cv)	286	get_padlist (pTHX_ CV *cv)
249	{	287	{
250	MAGIC *mg = CORO_MAGIC (cv);	288	MAGIC *mg = CORO_MAGIC (cv);
251	AV *av;	289	AV *av;
252		290
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	291	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	292	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	293	else
256	{	294	{
257	#if 0	295	#if CORO_PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	296	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	297	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	298	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	299	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	300	SvREFCNT_dec (cp);
263	#else	301	#else
264	CvPADLIST (cv) = coro_clone_padlist (cv);	302	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
265	#endif	303	#endif
266	}	304	}
267	}	305	}
268		306
269	static void	307	static void
270	put_padlist (CV *cv)	308	put_padlist (pTHX_ CV *cv)
271	{	309	{
272	MAGIC *mg = CORO_MAGIC (cv);	310	MAGIC *mg = CORO_MAGIC (cv);
273	AV *av;	311	AV *av;
274		312
275	if (!mg)	313	if (!mg)
…		…
286	av_extend (av, AvMAX (av) + 1);	324	av_extend (av, AvMAX (av) + 1);
287		325
288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	326	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289	}	327	}
290		328
		329	/ load & save, init *****************************************************/
		330
291	#define SB do {	331	#define SB do {
292	#define SE } while (0)	332	#define SE } while (0)
293		333
294	#define LOAD(state) load_state ((state))
295	#define SAVE(state,flags) save_state ((state),(flags))
296
297	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	334	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
298		335
299	static void	336	static void
300	load_state (Coro__State c)	337	load_perl (pTHX_ Coro__State c)
301	{	338	{
302	#define VAR(name,type) PL_ ## name = c->name;	339	#define VAR(name,type) PL_ ## name = c->name;
303	# include "state.h"	340	# include "state.h"
304	#undef VAR	341	#undef VAR
305		342
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	343	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	344	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	345	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		346	if (c->irssv)
		347	{
		348	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		349	SvREFCNT_dec (c->irssv);
		350	else
		351	{
		352	REPLACE_SV (PL_rs, c->irssv);
		353	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		354	sv_setsv (c->irssv_sv, PL_rs);
		355	}
		356	}
309		357
310	{	358	{
311	dSP;	359	dSP;
312	CV *cv;	360	CV *cv;
313		361
314	/* now do the ugly restore mess */	362	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	363	while ((cv = (CV *)POPs))
316	{	364	{
317	put_padlist (cv); /* mark this padlist as available */	365	put_padlist (aTHX_ cv); /* mark this padlist as available */
318	CvDEPTH (cv) = PTR2IV (POPs);	366	CvDEPTH (cv) = PTR2IV (POPs);
319	CvPADLIST (cv) = (AV *)POPs;	367	CvPADLIST (cv) = (AV *)POPs;
320	}	368	}
321		369
322	PUTBACK;	370	PUTBACK;
323	}	371	}
		372	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
324	}	373	}
325		374
326	static void	375	static void
327	save_state (Coro__State c, int flags)	376	save_perl (pTHX_ Coro__State c)
328	{	377	{
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
329	{	379	{
330	dSP;	380	dSP;
331	I32 cxix = cxstack_ix;	381	I32 cxix = cxstack_ix;
332	PERL_CONTEXT *ccstk = cxstack;	382	PERL_CONTEXT *ccstk = cxstack;
333	PERL_SI *top_si = PL_curstackinfo;	383	PERL_SI *top_si = PL_curstackinfo;
…		…
335	/*	385	/*
336	* the worst thing you can imagine happens first - we have to save	386	* the worst thing you can imagine happens first - we have to save
337	* (and reinitialize) all cv's in the whole callchain :(	387	* (and reinitialize) all cv's in the whole callchain :(
338	*/	388	*/
339		389
		390	EXTEND (SP, 3 + 1);
340	PUSHs (Nullsv);	391	PUSHs (Nullsv);
341	/* this loop was inspired by pp_caller */	392	/* this loop was inspired by pp_caller */
342	for (;;)	393	for (;;)
343	{	394	{
344	while (cxix >= 0)	395	while (cxix >= 0)
…		…
350	CV *cv = cx->blk_sub.cv;	401	CV *cv = cx->blk_sub.cv;
351		402
352	if (CvDEPTH (cv))	403	if (CvDEPTH (cv))
353	{	404	{
354	EXTEND (SP, 3);	405	EXTEND (SP, 3);
355
356	PUSHs ((SV *)CvPADLIST (cv));	406	PUSHs ((SV *)CvPADLIST (cv));
357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	407	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
358	PUSHs ((SV *)cv);	408	PUSHs ((SV *)cv);
359		409
360	CvDEPTH (cv) = 0;	410	CvDEPTH (cv) = 0;
361	get_padlist (cv);	411	get_padlist (aTHX_ cv);
362	}	412	}
363	}	413	}
364	#ifdef CXt_FORMAT
365	else if (CxTYPE (cx) == CXt_FORMAT)
366	{
367	/* I never used formats, so how should I know how these are implemented? */
368	/* my bold guess is as a simple, plain sub... */
369	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
370	}
371	#endif
372	}	414	}
373		415
374	if (top_si->si_type == PERLSI_MAIN)	416	if (top_si->si_type == PERLSI_MAIN)
375	break;	417	break;
376		418
…		…
380	}	422	}
381		423
382	PUTBACK;	424	PUTBACK;
383	}	425	}
384		426
385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	427	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
386	c->defsv = flags & TRANSFER_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	428	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	429	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		430	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
388		431
389	#define VAR(name,type)c->name = PL_ ## name;	432	#define VAR(name,type)c->name = PL_ ## name;
390	# include "state.h"	433	# include "state.h"
391	#undef VAR	434	#undef VAR
392	}	435	}
…		…
395	* allocate various perl stacks. This is an exact copy	438	* allocate various perl stacks. This is an exact copy
396	* of perl.c:init_stacks, except that it uses less memory	439	* of perl.c:init_stacks, except that it uses less memory
397	* on the (sometimes correct) assumption that coroutines do	440	* on the (sometimes correct) assumption that coroutines do
398	* not usually need a lot of stackspace.	441	* not usually need a lot of stackspace.
399	*/	442	*/
		443	#if CORO_PREFER_PERL_FUNCTIONS
		444	# define coro_init_stacks init_stacks
		445	#else
400	static void	446	static void
401	coro_init_stacks ()	447	coro_init_stacks (pTHX)
402	{	448	{
403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	449	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
404	PL_curstackinfo->si_type = PERLSI_MAIN;	450	PL_curstackinfo->si_type = PERLSI_MAIN;
405	PL_curstack = PL_curstackinfo->si_stack;	451	PL_curstack = PL_curstackinfo->si_stack;
406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	452	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
434	New(54,PL_retstack,16,OP*);	480	New(54,PL_retstack,16,OP*);
435	PL_retstack_ix = 0;	481	PL_retstack_ix = 0;
436	PL_retstack_max = 16;	482	PL_retstack_max = 16;
437	#endif	483	#endif
438	}	484	}
		485	#endif
439		486
440	/*	487	/*
441	* destroy the stacks, the callchain etc...	488	* destroy the stacks, the callchain etc...
442	*/	489	*/
443	static void	490	static void
444	coro_destroy_stacks ()	491	coro_destroy_stacks (pTHX)
445	{	492	{
446	if (!IN_DESTRUCT)	493	if (!IN_DESTRUCT)
447	{	494	{
448	/* is this ugly, I ask? */	495	/* restore all saved variables and stuff */
449	LEAVE_SCOPE (0);	496	LEAVE_SCOPE (0);
		497	assert (PL_tmps_floor == -1);
450		498
451	/* sure it is, but more important: is it correct?? :/ */	499	/* free all temporaries */
452	FREETMPS;	500	FREETMPS;
		501	assert (PL_tmps_ix == -1);
453		502
		503	/* unwind all extra stacks */
454	/POPSTACK_TO (PL_mainstack);//D//use/	504	POPSTACK_TO (PL_mainstack);
		505
		506	/* unwind main stack */
		507	dounwind (-1);
455	}	508	}
456		509
457	while (PL_curstackinfo->si_next)	510	while (PL_curstackinfo->si_next)
458	PL_curstackinfo = PL_curstackinfo->si_next;	511	PL_curstackinfo = PL_curstackinfo->si_next;
459		512
460	while (PL_curstackinfo)	513	while (PL_curstackinfo)
461	{	514	{
462	PERL_SI *p = PL_curstackinfo->si_prev;	515	PERL_SI *p = PL_curstackinfo->si_prev;
463		516
464	{ /D//remove/
465	dSP;
466	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
467	PUTBACK; /* possibly superfluous */
468	}
469
470	if (!IN_DESTRUCT)	517	if (!IN_DESTRUCT)
471	{
472	dounwind (-1);/D//remove/
473	SvREFCNT_dec (PL_curstackinfo->si_stack);	518	SvREFCNT_dec (PL_curstackinfo->si_stack);
474	}
475		519
476	Safefree (PL_curstackinfo->si_cxstack);	520	Safefree (PL_curstackinfo->si_cxstack);
477	Safefree (PL_curstackinfo);	521	Safefree (PL_curstackinfo);
478	PL_curstackinfo = p;	522	PL_curstackinfo = p;
479	}	523	}
…		…
485	#if !PERL_VERSION_ATLEAST (5,9,0)	529	#if !PERL_VERSION_ATLEAST (5,9,0)
486	Safefree (PL_retstack);	530	Safefree (PL_retstack);
487	#endif	531	#endif
488	}	532	}
489		533
		534	/ coroutine stack handling **********************************************/
		535
490	static void	536	static void
491	setup_coro (struct coro *coro)	537	setup_coro (pTHX_ struct coro *coro)
492	{	538	{
493	/*	539	/*
494	* emulate part of the perl startup here.	540	* emulate part of the perl startup here.
495	*/	541	*/
496
497	coro_init_stacks ();	542	coro_init_stacks (aTHX);
498		543
499	PL_curcop = &PL_compiling;	544	PL_curcop = &PL_compiling;
500	PL_in_eval = EVAL_NULL;	545	PL_in_eval = EVAL_NULL;
		546	PL_comppad = 0;
501	PL_curpm = 0;	547	PL_curpm = 0;
502	PL_localizing = 0;	548	PL_localizing = 0;
503	PL_dirty = 0;	549	PL_dirty = 0;
504	PL_restartop = 0;	550	PL_restartop = 0;
505		551
…		…
524		570
525	ENTER; /* necessary e.g. for dounwind */	571	ENTER; /* necessary e.g. for dounwind */
526	}	572	}
527		573
528	static void	574	static void
529	free_coro_mortal ()	575	free_coro_mortal (pTHX)
530	{	576	{
531	if (coro_mortal)	577	if (coro_mortal)
532	{	578	{
533	SvREFCNT_dec (coro_mortal);	579	SvREFCNT_dec (coro_mortal);
534	coro_mortal = 0;	580	coro_mortal = 0;
535	}	581	}
536	}	582	}
537		583
538	/* inject a fake call to Coro::State::_cctx_init into the execution */	584	/* inject a fake call to Coro::State::_cctx_init into the execution */
539	static void NOINLINE	585	static void NOINLINE
540	prepare_cctx (coro_cctx *cctx)	586	prepare_cctx (pTHX_ coro_cctx *cctx)
541	{	587	{
542	dSP;	588	dSP;
543	LOGOP myop;	589	LOGOP myop;
544		590
545	Zero (&myop, 1, LOGOP);	591	Zero (&myop, 1, LOGOP);
…		…
557	}	603	}
558		604
559	static void	605	static void
560	coro_run (void *arg)	606	coro_run (void *arg)
561	{	607	{
		608	dTHX;
		609
562	/* coro_run is the alternative tail of transfer(), so unlock here. */	610	/* coro_run is the alternative tail of transfer(), so unlock here. */
563	UNLOCK;	611	UNLOCK;
564		612
565	/*	613	/*
566	* this is a _very_ stripped down perl interpreter ;)	614	* this is a _very_ stripped down perl interpreter ;)
567	*/	615	*/
568	PL_top_env = &PL_start_env;	616	PL_top_env = &PL_start_env;
569		617
570	/* inject call to cctx_init */	618	/* inject call to cctx_init */
571	prepare_cctx ((coro_cctx *)arg);	619	prepare_cctx (aTHX_ (coro_cctx *)arg);
572		620
573	/* somebody will hit me for both perl_run and PL_restartop */	621	/* somebody will hit me for both perl_run and PL_restartop */
574	PL_restartop = PL_op;	622	PL_restartop = PL_op;
575	perl_run (PL_curinterp);	623	perl_run (PL_curinterp);
576		624
…		…
580		628
581	static coro_cctx *	629	static coro_cctx *
582	cctx_new ()	630	cctx_new ()
583	{	631	{
584	coro_cctx *cctx;	632	coro_cctx *cctx;
		633	void *stack_start;
		634	size_t stack_size;
585		635
586	++cctx_count;	636	++cctx_count;
587		637
588	New (0, cctx, 1, coro_cctx);	638	Newz (0, cctx, 1, coro_cctx);
589		639
590	#if HAVE_MMAP	640	#if HAVE_MMAP
591		641
592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	642	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
593	/* mmap supposedly does allocate-on-write for us */	643	/* mmap supposedly does allocate-on-write for us */
594	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	644	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
595		645
596	if (cctx->sptr == (void *)-1)	646	if (cctx->sptr != (void *)-1)
597	{
598	perror ("FATAL: unable to mmap stack for coroutine");
599	_exit (EXIT_FAILURE);
600	}	647	{
601
602	# if STACKGUARD	648	# if CORO_STACKGUARD
603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	649	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
604	# endif	650	# endif
		651	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		652	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		653	cctx->mapped = 1;
		654	}
		655	else
		656	#endif
		657	{
		658	cctx->ssize = coro_stacksize * (long)sizeof (long);
		659	New (0, cctx->sptr, coro_stacksize, long);
605		660
606	#else
607
608	cctx->ssize = STACKSIZE * (long)sizeof (long);
609	New (0, cctx->sptr, STACKSIZE, long);
610
611	if (!cctx->sptr)	661	if (!cctx->sptr)
612	{	662	{
613	perror ("FATAL: unable to malloc stack for coroutine");	663	perror ("FATAL: unable to allocate stack for coroutine");
614	_exit (EXIT_FAILURE);	664	_exit (EXIT_FAILURE);
615	}	665	}
616		666
617	#endif	667	stack_start = cctx->sptr;
		668	stack_size = cctx->ssize;
		669	}
618		670
619	#if USE_VALGRIND	671	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
620	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
621	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
622	cctx->ssize + (char *)cctx->sptr
623	);
624	#endif
625
626	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	672	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
627		673
628	return cctx;	674	return cctx;
629	}	675	}
630		676
631	static void	677	static void
…		…
634	if (!cctx)	680	if (!cctx)
635	return;	681	return;
636		682
637	--cctx_count;	683	--cctx_count;
638		684
639	#if USE_VALGRIND	685	#if CORO_USE_VALGRIND
640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	686	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
641	#endif	687	#endif
642		688
643	#if HAVE_MMAP	689	#if HAVE_MMAP
		690	if (cctx->mapped)
644	munmap (cctx->sptr, cctx->ssize);	691	munmap (cctx->sptr, cctx->ssize);
645	#else	692	else
		693	#endif
646	Safefree (cctx->sptr);	694	Safefree (cctx->sptr);
647	#endif
648		695
649	Safefree (cctx);	696	Safefree (cctx);
650	}	697	}
651		698
652	static coro_cctx *	699	static coro_cctx *
653	cctx_get ()	700	cctx_get (pTHX)
654	{	701	{
655	coro_cctx *cctx;
656
657	if (cctx_first)	702	while (cctx_first)
658	{	703	{
659	cctx = cctx_first;	704	coro_cctx *cctx = cctx_first;
660	cctx_first = cctx->next;	705	cctx_first = cctx->next;
661	--cctx_idle;	706	--cctx_idle;
		707
		708	if (cctx->ssize >= coro_stacksize)
		709	return cctx;
		710
		711	cctx_destroy (cctx);
662	}	712	}
663	else	713
664	{
665	cctx = cctx_new ();
666	PL_op = PL_op->op_next;	714	PL_op = PL_op->op_next;
667	}
668
669	return cctx;	715	return cctx_new ();
670	}	716	}
671		717
672	static void	718	static void
673	cctx_put (coro_cctx *cctx)	719	cctx_put (coro_cctx *cctx)
674	{	720	{
…		…
686	++cctx_idle;	732	++cctx_idle;
687	cctx->next = cctx_first;	733	cctx->next = cctx_first;
688	cctx_first = cctx;	734	cctx_first = cctx;
689	}	735	}
690		736
		737	/ coroutine switching ***************************************************/
		738
691	/* never call directly, always through the coro_state_transfer global variable */	739	/* never call directly, always through the coro_state_transfer global variable */
692	static void NOINLINE	740	static void NOINLINE
693	transfer (struct coro prev, struct coro next, int flags)	741	transfer (pTHX_ struct coro prev, struct coro next)
694	{	742	{
695	dSTACKLEVEL;	743	dSTACKLEVEL;
696		744
697	/* sometimes transfer is only called to set idle_sp */	745	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	746	if (!next)
		747	{
699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	748	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		749	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		750	}
700	else if (prev != next)	751	else if (prev != next)
701	{	752	{
702	coro_cctx *prev__cctx;	753	coro_cctx *prev__cctx;
703		754
704	if (prev->flags & CF_NEW)	755	if (prev->flags & CF_NEW)
…		…
715	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	766	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
716		767
717	if (next->flags & CF_RUNNING)	768	if (next->flags & CF_RUNNING)
718	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	769	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
719		770
		771	if (next->flags & CF_DESTROYED)
		772	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		773
720	prev->flags &= ~CF_RUNNING;	774	prev->flags &= ~CF_RUNNING;
721	next->flags \|= CF_RUNNING;	775	next->flags \|= CF_RUNNING;
722		776
723	LOCK;	777	LOCK;
724		778
725	if (next->flags & CF_NEW)	779	if (next->flags & CF_NEW)
726	{	780	{
727	/* need to start coroutine */	781	/* need to start coroutine */
728	next->flags &= ~CF_NEW;	782	next->flags &= ~CF_NEW;
729	/* first get rid of the old state */	783	/* first get rid of the old state */
730	SAVE (prev, -1);	784	save_perl (aTHX_ prev);
731	/* setup coroutine call */	785	/* setup coroutine call */
732	setup_coro (next);	786	setup_coro (aTHX_ next);
733	/* need a new stack */	787	/* need a new stack */
734	assert (!next->stack);	788	assert (!next->cctx);
735	}	789	}
736	else	790	else
737	{	791	{
738	/* coroutine already started */	792	/* coroutine already started */
739	SAVE (prev, flags);	793	save_perl (aTHX_ prev);
740	LOAD (next);	794	load_perl (aTHX_ next);
741	}	795	}
742		796
743	prev__cctx = prev->cctx;	797	prev__cctx = prev->cctx;
744		798
745	/* possibly "free" the cctx */	799	/* possibly "free" the cctx */
746	if (prev__cctx->idle_sp == STACKLEVEL)	800	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	801	{
748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	802	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
749	assert (PL_top_env == prev__cctx->top_env);	803	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
750		804
751	prev->cctx = 0;	805	prev->cctx = 0;
752		806
753	cctx_put (prev__cctx);	807	cctx_put (prev__cctx);
754	prev__cctx->inuse = 0;	808	prev__cctx->inuse = 0;
755	}	809	}
756		810
757	if (!next->cctx)	811	if (!next->cctx)
758	{	812	{
759	next->cctx = cctx_get ();	813	next->cctx = cctx_get (aTHX);
760	assert (!next->cctx->inuse);	814	assert (!next->cctx->inuse);
761	next->cctx->inuse = 1;	815	next->cctx->inuse = 1;
762	}	816	}
763		817
764	if (prev__cctx != next->cctx)	818	if (prev__cctx != next->cctx)
…		…
766	prev__cctx->top_env = PL_top_env;	820	prev__cctx->top_env = PL_top_env;
767	PL_top_env = next->cctx->top_env;	821	PL_top_env = next->cctx->top_env;
768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	822	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769	}	823	}
770		824
771	free_coro_mortal ();	825	free_coro_mortal (aTHX);
772
773	UNLOCK;	826	UNLOCK;
774	}	827	}
775	}	828	}
776		829
777	struct transfer_args	830	struct transfer_args
778	{	831	{
779	struct coro prev, next;	832	struct coro prev, next;
780	int flags;
781	};	833	};
782		834
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	835	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
784		836
		837	/ high level stuff ******************************************************/
		838
785	static void	839	static int
786	coro_state_destroy (struct coro *coro)	840	coro_state_destroy (pTHX_ struct coro *coro)
787	{	841	{
788	if (coro->refcnt--)	842	if (coro->flags & CF_DESTROYED)
789	return;	843	return 0;
		844
		845	coro->flags \|= CF_DESTROYED;
		846
		847	if (coro->flags & CF_READY)
		848	{
		849	/* reduce nready, as destroying a ready coro effectively unreadies it */
		850	/* alternative: look through all ready queues and remove the coro */
		851	LOCK;
		852	--coro_nready;
		853	UNLOCK;
		854	}
		855	else
		856	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
790		857
791	if (coro->mainstack && coro->mainstack != main_mainstack)	858	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	859	{
793	struct coro temp;	860	struct coro temp;
		861
		862	assert (!(coro->flags & CF_RUNNING));
		863
		864	Zero (&temp, 1, struct coro);
		865	temp.save = CORO_SAVE_ALL;
794		866
795	if (coro->flags & CF_RUNNING)	867	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	868	croak ("FATAL: tried to destroy currently running coroutine");
797		869
798	SAVE ((&temp), TRANSFER_SAVE_ALL);	870	save_perl (aTHX_ &temp);
799	LOAD (coro);	871	load_perl (aTHX_ coro);
800		872
801	coro_destroy_stacks ();	873	coro_destroy_stacks (aTHX);
802		874
803	LOAD ((&temp)); /* this will get rid of defsv etc.. */	875	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
804		876
805	coro->mainstack = 0;	877	coro->mainstack = 0;
806	}	878	}
807		879
808	cctx_destroy (coro->cctx);	880	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	881	SvREFCNT_dec (coro->args);
810	Safefree (coro);	882
		883	return 1;
811	}	884	}
812		885
813	static int	886	static int
814	coro_state_clear (pTHX_ SV sv, MAGIC mg)	887	coro_state_free (pTHX_ SV sv, MAGIC mg)
815	{	888	{
816	struct coro coro = (struct coro )mg->mg_ptr;	889	struct coro coro = (struct coro )mg->mg_ptr;
817	mg->mg_ptr = 0;	890	mg->mg_ptr = 0;
818		891
		892	if (--coro->refcnt < 0)
		893	{
819	coro_state_destroy (coro);	894	coro_state_destroy (aTHX_ coro);
		895	Safefree (coro);
		896	}
820		897
821	return 0;	898	return 0;
822	}	899	}
823		900
824	static int	901	static int
…		…
831	return 0;	908	return 0;
832	}	909	}
833		910
834	static MGVTBL coro_state_vtbl = {	911	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	912	0, 0, 0, 0,
836	coro_state_clear,	913	coro_state_free,
837	0,	914	0,
838	#ifdef MGf_DUP	915	#ifdef MGf_DUP
839	coro_state_dup,	916	coro_state_dup,
840	#else	917	#else
841	# define MGf_DUP 0	918	# define MGf_DUP 0
842	#endif	919	#endif
843	};	920	};
844		921
845	static struct coro *	922	static struct coro *
846	SvSTATE (SV *coro)	923	SvSTATE_ (pTHX_ SV *coro)
847	{	924	{
848	HV *stash;	925	HV *stash;
849	MAGIC *mg;	926	MAGIC *mg;
850		927
851	if (SvROK (coro))	928	if (SvROK (coro))
…		…
857	/* very slow, but rare, check */	934	/* very slow, but rare, check */
858	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	935	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
859	croak ("Coro::State object required");	936	croak ("Coro::State object required");
860	}	937	}
861		938
862	mg = SvMAGIC (coro);	939	mg = CORO_MAGIC (coro);
863	assert (mg->mg_type == PERL_MAGIC_ext);
864	return (struct coro *)mg->mg_ptr;	940	return (struct coro *)mg->mg_ptr;
865	}	941	}
866		942
		943	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		944
867	static void	945	static void
868	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	946	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
869	{	947	{
870	ta->prev = SvSTATE (prev);	948	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next);	949	ta->next = SvSTATE (next_sv);
872	ta->flags = flags;
873	}	950	}
874		951
875	static void	952	static void
876	api_transfer (SV prev, SV next, int flags)	953	api_transfer (SV prev_sv, SV next_sv)
877	{	954	{
		955	dTHX;
878	struct transfer_args ta;	956	struct transfer_args ta;
879		957
880	prepare_transfer (&ta, prev, next, flags);	958	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
881	TRANSFER (ta);	959	TRANSFER (ta);
882	}	960	}
883		961
		962	static int
		963	api_save (SV *coro_sv, int new_save)
		964	{
		965	dTHX;
		966	struct coro *coro = SvSTATE (coro_sv);
		967	int old_save = coro->save;
		968
		969	if (new_save >= 0)
		970	coro->save = new_save;
		971
		972	return old_save;
		973	}
		974
884	/ Coro ******************************************************************/	975	/ Coro ******************************************************************/
885		976
886	#define PRIO_MAX 3
887	#define PRIO_HIGH 1
888	#define PRIO_NORMAL 0
889	#define PRIO_LOW -1
890	#define PRIO_IDLE -3
891	#define PRIO_MIN -4
892
893	/* for Coro.pm */
894	static SV *coro_current;
895	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
896	static int coro_nready;
897
898	static void	977	static void
899	coro_enq (SV *coro_sv)	978	coro_enq (pTHX_ SV *coro_sv)
900	{	979	{
901	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	980	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
902	coro_nready++;
903	}	981	}
904		982
905	static SV *	983	static SV *
906	coro_deq (int min_prio)	984	coro_deq (pTHX_ int min_prio)
907	{	985	{
908	int prio = PRIO_MAX - PRIO_MIN;	986	int prio = PRIO_MAX - PRIO_MIN;
909		987
910	min_prio -= PRIO_MIN;	988	min_prio -= PRIO_MIN;
911	if (min_prio < 0)	989	if (min_prio < 0)
912	min_prio = 0;	990	min_prio = 0;
913		991
914	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	992	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
915	if (AvFILLp (coro_ready [prio]) >= 0)	993	if (AvFILLp (coro_ready [prio]) >= 0)
916	{
917	coro_nready--;
918	return av_shift (coro_ready [prio]);	994	return av_shift (coro_ready [prio]);
919	}
920		995
921	return 0;	996	return 0;
922	}	997	}
923		998
924	static int	999	static int
925	api_ready (SV *coro_sv)	1000	api_ready (SV *coro_sv)
926	{	1001	{
		1002	dTHX;
927	struct coro *coro;	1003	struct coro *coro;
928		1004
929	if (SvROK (coro_sv))	1005	if (SvROK (coro_sv))
930	coro_sv = SvRV (coro_sv);	1006	coro_sv = SvRV (coro_sv);
931		1007
932	coro = SvSTATE (coro_sv);	1008	coro = SvSTATE (coro_sv);
933		1009
934	if (coro->flags & CF_READY)	1010	if (coro->flags & CF_READY)
935	return 0;	1011	return 0;
936		1012
937	#if 0 /* this is actually harmless */
938	if (coro->flags & CF_RUNNING)
939	croak ("Coro::ready called on currently running coroutine");
940	#endif
941
942	coro->flags \|= CF_READY;	1013	coro->flags \|= CF_READY;
943		1014
944	LOCK;	1015	LOCK;
945	coro_enq (SvREFCNT_inc (coro_sv));	1016	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1017	++coro_nready;
946	UNLOCK;	1018	UNLOCK;
947		1019
948	return 1;	1020	return 1;
949	}	1021	}
950		1022
951	static int	1023	static int
952	api_is_ready (SV *coro_sv)	1024	api_is_ready (SV *coro_sv)
953	{	1025	{
		1026	dTHX;
954	return !!SvSTATE (coro_sv)->flags & CF_READY;	1027	return !!(SvSTATE (coro_sv)->flags & CF_READY);
955	}	1028	}
956		1029
957	static void	1030	static void
958	prepare_schedule (struct transfer_args *ta)	1031	prepare_schedule (pTHX_ struct transfer_args *ta)
959	{	1032	{
960	SV prev, next;	1033	SV prev_sv, next_sv;
961		1034
962	for (;;)	1035	for (;;)
963	{	1036	{
964	LOCK;	1037	LOCK;
965	next = coro_deq (PRIO_MIN);	1038	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1039
		1040	/* nothing to schedule: call the idle handler */
		1041	if (!next_sv)
		1042	{
		1043	dSP;
		1044	UNLOCK;
		1045
		1046	ENTER;
		1047	SAVETMPS;
		1048
		1049	PUSHMARK (SP);
		1050	PUTBACK;
		1051	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1052
		1053	FREETMPS;
		1054	LEAVE;
		1055	continue;
		1056	}
		1057
		1058	ta->next = SvSTATE (next_sv);
		1059
		1060	/* cannot transfer to destroyed coros, skip and look for next */
		1061	if (ta->next->flags & CF_DESTROYED)
		1062	{
		1063	UNLOCK;
		1064	SvREFCNT_dec (next_sv);
		1065	/* coro_nready is already taken care of by destroy */
		1066	continue;
		1067	}
		1068
		1069	--coro_nready;
966	UNLOCK;	1070	UNLOCK;
967
968	if (next)
969	break;	1071	break;
970
971	{
972	dSP;
973
974	ENTER;
975	SAVETMPS;
976
977	PUSHMARK (SP);
978	PUTBACK;
979	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
980
981	FREETMPS;
982	LEAVE;
983	}	1072	}
984	}
985
986	prev = SvRV (coro_current);
987	SvRV_set (coro_current, next);
988		1073
989	/* free this only after the transfer */	1074	/* free this only after the transfer */
		1075	prev_sv = SvRV (coro_current);
		1076	SvRV_set (coro_current, next_sv);
		1077	ta->prev = SvSTATE (prev_sv);
		1078
		1079	assert (ta->next->flags & CF_READY);
		1080	ta->next->flags &= ~CF_READY;
		1081
990	LOCK;	1082	LOCK;
991	free_coro_mortal ();	1083	free_coro_mortal (aTHX);
		1084	coro_mortal = prev_sv;
992	UNLOCK;	1085	UNLOCK;
993	coro_mortal = prev;
994
995	assert (!SvROK(prev));//D
996	assert (!SvROK(next));//D
997
998	ta->prev = SvSTATE (prev);
999	ta->next = SvSTATE (next);
1000	ta->flags = TRANSFER_SAVE_ALL;
1001
1002	assert (ta->flags & CF_READY);
1003	ta->next->flags &= ~CF_READY;
1004	}	1086	}
1005		1087
1006	static void	1088	static void
1007	prepare_cede (struct transfer_args *ta)	1089	prepare_cede (pTHX_ struct transfer_args *ta)
1008	{	1090	{
1009	api_ready (coro_current);	1091	api_ready (coro_current);
1010
1011	prepare_schedule (ta);	1092	prepare_schedule (aTHX_ ta);
		1093	}
		1094
		1095	static int
		1096	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1097	{
		1098	if (coro_nready)
		1099	{
		1100	SV *prev = SvRV (coro_current);
		1101	prepare_schedule (aTHX_ ta);
		1102	api_ready (prev);
		1103	return 1;
		1104	}
		1105	else
		1106	return 0;
1012	}	1107	}
1013		1108
1014	static void	1109	static void
1015	api_schedule (void)	1110	api_schedule (void)
1016	{	1111	{
		1112	dTHX;
1017	struct transfer_args ta;	1113	struct transfer_args ta;
1018		1114
1019	prepare_schedule (&ta);	1115	prepare_schedule (aTHX_ &ta);
1020	TRANSFER (ta);	1116	TRANSFER (ta);
1021	}	1117	}
1022		1118
1023	static void	1119	static int
1024	api_cede (void)	1120	api_cede (void)
1025	{	1121	{
		1122	dTHX;
1026	struct transfer_args ta;	1123	struct transfer_args ta;
1027		1124
1028	prepare_cede (&ta);	1125	prepare_cede (aTHX_ &ta);
		1126
		1127	if (ta.prev != ta.next)
		1128	{
1029	TRANSFER (ta);	1129	TRANSFER (ta);
		1130	return 1;
		1131	}
		1132	else
		1133	return 0;
		1134	}
		1135
		1136	static int
		1137	api_cede_notself (void)
		1138	{
		1139	dTHX;
		1140	struct transfer_args ta;
		1141
		1142	if (prepare_cede_notself (aTHX_ &ta))
		1143	{
		1144	TRANSFER (ta);
		1145	return 1;
		1146	}
		1147	else
		1148	return 0;
1030	}	1149	}
1031		1150
1032	MODULE = Coro::State PACKAGE = Coro::State	1151	MODULE = Coro::State PACKAGE = Coro::State
1033		1152
1034	PROTOTYPES: DISABLE	1153	PROTOTYPES: DISABLE
…		…
1040	#endif	1159	#endif
1041	BOOT_PAGESIZE;	1160	BOOT_PAGESIZE;
1042		1161
1043	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1162	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1044		1163
1045	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1164	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1046	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1165	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1047	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1166	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1167	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1168	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1048		1169
1049	main_mainstack = PL_mainstack;	1170	main_mainstack = PL_mainstack;
1050		1171
1051	coroapi.ver = CORO_API_VERSION;	1172	coroapi.ver = CORO_API_VERSION;
1052	coroapi.transfer = api_transfer;	1173	coroapi.transfer = api_transfer;
…		…
1062	HV *hv;	1183	HV *hv;
1063	int i;	1184	int i;
1064		1185
1065	Newz (0, coro, 1, struct coro);	1186	Newz (0, coro, 1, struct coro);
1066	coro->args = newAV ();	1187	coro->args = newAV ();
		1188	coro->save = CORO_SAVE_ALL;
1067	coro->flags = CF_NEW;	1189	coro->flags = CF_NEW;
1068		1190
1069	hv = newHV ();	1191	hv = newHV ();
1070	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1192	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1071	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1193	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1072		1194
1073	for (i = 1; i < items; i++)	1195	for (i = 1; i < items; i++)
1074	av_push (coro->args, newSVsv (ST (i)));	1196	av_push (coro->args, newSVsv (ST (i)));
1075	}	1197	}
1076	OUTPUT:	1198	OUTPUT:
		1199	RETVAL
		1200
		1201	int
		1202	save (SV *coro, int new_save = -1)
		1203	CODE:
		1204	RETVAL = api_save (coro, new_save);
		1205	OUTPUT:
1077	RETVAL	1206	RETVAL
1078		1207
1079	void	1208	void
1080	_set_stacklevel (...)	1209	_set_stacklevel (...)
1081	ALIAS:	1210	ALIAS:
1082	Coro::State::transfer = 1	1211	Coro::State::transfer = 1
1083	Coro::schedule = 2	1212	Coro::schedule = 2
1084	Coro::cede = 3	1213	Coro::cede = 3
		1214	Coro::cede_notself = 4
1085	CODE:	1215	CODE:
1086	{	1216	{
1087	struct transfer_args ta;	1217	struct transfer_args ta;
1088		1218
1089	switch (ix)	1219	switch (ix)
1090	{	1220	{
1091	case 0:	1221	case 0:
1092	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1222	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1093	ta.next = 0;	1223	ta.next = 0;
1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1095	break;	1224	break;
1096		1225
1097	case 1:	1226	case 1:
1098	if (items != 3)	1227	if (items != 2)
1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1228	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1100		1229
1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1230	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1102	break;	1231	break;
1103		1232
1104	case 2:	1233	case 2:
1105	prepare_schedule (&ta);	1234	prepare_schedule (aTHX_ &ta);
1106	break;	1235	break;
1107		1236
1108	case 3:	1237	case 3:
1109	prepare_cede (&ta);	1238	prepare_cede (aTHX_ &ta);
		1239	break;
		1240
		1241	case 4:
		1242	if (!prepare_cede_notself (aTHX_ &ta))
		1243	XSRETURN_EMPTY;
		1244
1110	break;	1245	break;
1111	}	1246	}
1112		1247
		1248	BARRIER;
1113	TRANSFER (ta);	1249	TRANSFER (ta);
1114	}
1115		1250
1116	void	1251	if (GIMME_V != G_VOID && ta.next != ta.prev)
1117	_clone_state_from (SV dst, SV src)	1252	XSRETURN_YES;
		1253	}
		1254
		1255	bool
		1256	_destroy (SV *coro_sv)
1118	CODE:	1257	CODE:
1119	{	1258	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1120	struct coro *coro_src = SvSTATE (src);	1259	OUTPUT:
1121		1260	RETVAL
1122	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1123
1124	++coro_src->refcnt;
1125	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1126	}
1127		1261
1128	void	1262	void
1129	_exit (code)	1263	_exit (code)
1130	int code	1264	int code
1131	PROTOTYPE: $	1265	PROTOTYPE: $
1132	CODE:	1266	CODE:
1133	_exit (code);	1267	_exit (code);
1134		1268
1135	int	1269	int
		1270	cctx_stacksize (int new_stacksize = 0)
		1271	CODE:
		1272	RETVAL = coro_stacksize;
		1273	if (new_stacksize)
		1274	coro_stacksize = new_stacksize;
		1275	OUTPUT:
		1276	RETVAL
		1277
		1278	int
1136	cctx_count ()	1279	cctx_count ()
1137	CODE:	1280	CODE:
1138	RETVAL = cctx_count;	1281	RETVAL = cctx_count;
1139	OUTPUT:	1282	OUTPUT:
1140	RETVAL	1283	RETVAL
…		…
1168	coro_ready[i] = newAV ();	1311	coro_ready[i] = newAV ();
1169		1312
1170	{	1313	{
1171	SV *sv = perl_get_sv("Coro::API", 1);	1314	SV *sv = perl_get_sv("Coro::API", 1);
1172		1315
1173	coroapi.schedule = api_schedule;	1316	coroapi.schedule = api_schedule;
		1317	coroapi.save = api_save;
1174	coroapi.cede = api_cede;	1318	coroapi.cede = api_cede;
		1319	coroapi.cede_notself = api_cede_notself;
1175	coroapi.ready = api_ready;	1320	coroapi.ready = api_ready;
1176	coroapi.is_ready = api_is_ready;	1321	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1322	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1323	coroapi.current = coro_current;
1179		1324
1180	GCoroAPI = &coroapi;	1325	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1326	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1327	SvREADONLY_on (sv);
1183	}	1328	}
1184	}	1329	}
		1330
		1331	void
		1332	_set_current (SV *current)
		1333	PROTOTYPE: $
		1334	CODE:
		1335	SvREFCNT_dec (SvRV (coro_current));
		1336	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1337
1186	int	1338	int
1187	prio (Coro::State coro, int newprio = 0)	1339	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1340	ALIAS:
1189	nice = 1	1341	nice = 1
…		…
1192	RETVAL = coro->prio;	1344	RETVAL = coro->prio;
1193		1345
1194	if (items > 1)	1346	if (items > 1)
1195	{	1347	{
1196	if (ix)	1348	if (ix)
1197	newprio += coro->prio;	1349	newprio = coro->prio - newprio;
1198		1350
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1351	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1352	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1353
1202	coro->prio = newprio;	1354	coro->prio = newprio;
1203	}	1355	}
1204	}	1356	}
		1357	OUTPUT:
		1358	RETVAL
1205		1359
1206	SV *	1360	SV *
1207	ready (SV *self)	1361	ready (SV *self)
1208	PROTOTYPE: $	1362	PROTOTYPE: $
1209	CODE:	1363	CODE:
…		…
1225	CODE:	1379	CODE:
1226	RETVAL = coro_nready;	1380	RETVAL = coro_nready;
1227	OUTPUT:	1381	OUTPUT:
1228	RETVAL	1382	RETVAL
1229		1383
1230	void
1231	_set_current (SV *current)
1232	PROTOTYPE: $
1233	CODE:
1234	SvREFCNT_dec (SvRV (coro_current));
1235	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1236
1237	MODULE = Coro::State PACKAGE = Coro::AIO	1384	MODULE = Coro::State PACKAGE = Coro::AIO
1238		1385
1239	SV *	1386	SV *
1240	_get_state ()	1387	_get_state ()
1241	CODE:	1388	CODE:
1242	{	1389	{
		1390	struct io_state *data;
		1391
1243	RETVAL = newSV (sizeof (struct io_state));	1392	RETVAL = newSV (sizeof (struct io_state));
1244	struct io_state data = (struct io_state )SvPVX (RETVAL);	1393	data = (struct io_state *)SvPVX (RETVAL);
1245	SvCUR_set (RETVAL, sizeof (struct io_state));	1394	SvCUR_set (RETVAL, sizeof (struct io_state));
1246	SvPOK_only (RETVAL);	1395	SvPOK_only (RETVAL);
1247		1396
1248	data->errorno = errno;	1397	data->errorno = errno;
1249	data->laststype = PL_laststype;	1398	data->laststype = PL_laststype;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs. Revision 1.146 by root, Sat Mar 17 19:51:57 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.120 by root, Sat Dec 2 18:01:30 2006 UTC vs.
Revision 1.146 by root, Sat Mar 17 19:51:57 2007 UTC