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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC vs.
Revision 1.149 by root, Sat Apr 14 15:06:05 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 */
		134	static JMPENV *main_top_env;
116	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
117	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
118		137
119	static struct coro_cctx *cctx_first;	138	static struct coro_cctx *cctx_first;
120	static int cctx_count, cctx_idle;	139	static int cctx_count, cctx_idle;
…		…
123	typedef struct coro_cctx {	142	typedef struct coro_cctx {
124	struct coro_cctx *next;	143	struct coro_cctx *next;
125		144
126	/* the stack */	145	/* the stack */
127	void *sptr;	146	void *sptr;
128	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
129		148
130	/* cpu state */	149	/* cpu state */
131	void idle_sp; / sp of top-level transfer/schedule/cede call */	150	void idle_sp; / sp of top-level transfer/schedule/cede call */
		151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
132	JMPENV *top_env;	152	JMPENV *top_env;
133	coro_context cctx;	153	coro_context cctx;
134		154
135	int inuse;
136
137	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
138	int valgrind_id;	156	int valgrind_id;
139	#endif	157	#endif
		158	char inuse, mapped;
140	} coro_cctx;	159	} coro_cctx;
141		160
142	enum {	161	enum {
143	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
144	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
145	CF_NEW = 0x0004, /* ahs never been switched to */	164	CF_NEW = 0x0004, /* has never been switched to */
		165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
146	};	166	};
147		167
148	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
149	struct coro {	169	struct coro {
150	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
151	coro_cctx *cctx;	171	coro_cctx *cctx;
152		172
153	/* data associated with this coroutine (initial args) */	173	/* data associated with this coroutine (initial args) */
154	AV *args;	174	AV *args;
155	int refcnt;	175	int refcnt;
156	int flags;	176	int save; /* CORO_SAVE flags */
		177	int flags; /* CF_ flags */
157		178
158	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
159	AV *defav;	180	AV defav; / @_ */
160	SV *defsv;	181	SV defsv; / $_ */
161	SV *errsv;	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
		184	SV irssv; / $/ */
		185	SV irssv_sv; / real $/ cache */
162		186
163	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
164	# include "state.h"	188	# include "state.h"
165	#undef VAR	189	#undef VAR
166		190
…		…
169	};	193	};
170		194
171	typedef struct coro *Coro__State;	195	typedef struct coro *Coro__State;
172	typedef struct coro *Coro__State_or_hashref;	196	typedef struct coro *Coro__State_or_hashref;
173		197
		198	/ Coro ******************************************************************/
		199
		200	#define PRIO_MAX 3
		201	#define PRIO_HIGH 1
		202	#define PRIO_NORMAL 0
		203	#define PRIO_LOW -1
		204	#define PRIO_IDLE -3
		205	#define PRIO_MIN -4
		206
		207	/* for Coro.pm */
		208	static SV *coro_current;
		209	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		210	static int coro_nready;
		211
		212	/ lowlevel stuff ********************************************************/
		213
174	static AV *	214	static AV *
175	coro_clone_padlist (CV *cv)	215	coro_clone_padlist (pTHX_ CV *cv)
176	{	216	{
177	AV *padlist = CvPADLIST (cv);	217	AV *padlist = CvPADLIST (cv);
178	AV newpadlist, newpad;	218	AV newpadlist, newpad;
179		219
180	newpadlist = newAV ();	220	newpadlist = newAV ();
…		…
192		232
193	return newpadlist;	233	return newpadlist;
194	}	234	}
195		235
196	static void	236	static void
197	free_padlist (AV *padlist)	237	free_padlist (pTHX_ AV *padlist)
198	{	238	{
199	/* may be during global destruction */	239	/* may be during global destruction */
200	if (SvREFCNT (padlist))	240	if (SvREFCNT (padlist))
201	{	241	{
202	I32 i = AvFILLp (padlist);	242	I32 i = AvFILLp (padlist);
…		…
223	AV *padlist;	263	AV *padlist;
224	AV av = (AV )mg->mg_obj;	264	AV av = (AV )mg->mg_obj;
225		265
226	/* casting is fun. */	266	/* casting is fun. */
227	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
228	free_padlist (padlist);	268	free_padlist (aTHX_ padlist);
229		269
230	SvREFCNT_dec (av);	270	SvREFCNT_dec (av);
231		271
232	return 0;	272	return 0;
233	}	273	}
…		…
243	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
244	: 0	284	: 0
245		285
246	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
247	static void	287	static void
248	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
249	{	289	{
250	MAGIC *mg = CORO_MAGIC (cv);	290	MAGIC *mg = CORO_MAGIC (cv);
251	AV *av;	291	AV *av;
252		292
253	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
254	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	294	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
255	else	295	else
256	{	296	{
257	#if 0	297	#if CORO_PREFER_PERL_FUNCTIONS
258	/* this is probably cleaner, but also slower? */	298	/* this is probably cleaner, but also slower? */
259	CV *cp = Perl_cv_clone (cv);	299	CV *cp = Perl_cv_clone (cv);
260	CvPADLIST (cv) = CvPADLIST (cp);	300	CvPADLIST (cv) = CvPADLIST (cp);
261	CvPADLIST (cp) = 0;	301	CvPADLIST (cp) = 0;
262	SvREFCNT_dec (cp);	302	SvREFCNT_dec (cp);
263	#else	303	#else
264	CvPADLIST (cv) = coro_clone_padlist (cv);	304	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
265	#endif	305	#endif
266	}	306	}
267	}	307	}
268		308
269	static void	309	static void
270	put_padlist (CV *cv)	310	put_padlist (pTHX_ CV *cv)
271	{	311	{
272	MAGIC *mg = CORO_MAGIC (cv);	312	MAGIC *mg = CORO_MAGIC (cv);
273	AV *av;	313	AV *av;
274		314
275	if (!mg)	315	if (!mg)
…		…
286	av_extend (av, AvMAX (av) + 1);	326	av_extend (av, AvMAX (av) + 1);
287		327
288	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	328	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
289	}	329	}
290		330
		331	/ load & save, init *****************************************************/
		332
291	#define SB do {	333	#define SB do {
292	#define SE } while (0)	334	#define SE } while (0)
293		335
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	336	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
298		337
299	static void	338	static void
300	load_state (Coro__State c)	339	load_perl (pTHX_ Coro__State c)
301	{	340	{
302	#define VAR(name,type) PL_ ## name = c->name;	341	#define VAR(name,type) PL_ ## name = c->name;
303	# include "state.h"	342	# include "state.h"
304	#undef VAR	343	#undef VAR
305		344
306	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
307	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
308	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	347	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		348	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		349
		350	if (c->irssv)
		351	{
		352	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		353	{
		354	SvREFCNT_dec (c->irssv);
		355	c->irssv = 0;
		356	}
		357	else
		358	{
		359	REPLACE_SV (PL_rs, c->irssv);
		360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
		361	sv_setsv (c->irssv_sv, PL_rs);
		362	}
		363	}
309		364
310	{	365	{
311	dSP;	366	dSP;
312	CV *cv;	367	CV *cv;
313		368
314	/* now do the ugly restore mess */	369	/* now do the ugly restore mess */
315	while ((cv = (CV *)POPs))	370	while ((cv = (CV *)POPs))
316	{	371	{
317	put_padlist (cv); /* mark this padlist as available */	372	put_padlist (aTHX_ cv); /* mark this padlist as available */
318	CvDEPTH (cv) = PTR2IV (POPs);	373	CvDEPTH (cv) = PTR2IV (POPs);
319	CvPADLIST (cv) = (AV *)POPs;	374	CvPADLIST (cv) = (AV *)POPs;
320	}	375	}
321		376
322	PUTBACK;	377	PUTBACK;
323	}	378	}
		379	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
324	}	380	}
325		381
326	static void	382	static void
327	save_state (Coro__State c, int flags)	383	save_perl (pTHX_ Coro__State c)
328	{	384	{
		385	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
329	{	386	{
330	dSP;	387	dSP;
331	I32 cxix = cxstack_ix;	388	I32 cxix = cxstack_ix;
332	PERL_CONTEXT *ccstk = cxstack;	389	PERL_CONTEXT *ccstk = cxstack;
333	PERL_SI *top_si = PL_curstackinfo;	390	PERL_SI *top_si = PL_curstackinfo;
…		…
335	/*	392	/*
336	* the worst thing you can imagine happens first - we have to save	393	* the worst thing you can imagine happens first - we have to save
337	* (and reinitialize) all cv's in the whole callchain :(	394	* (and reinitialize) all cv's in the whole callchain :(
338	*/	395	*/
339		396
		397	EXTEND (SP, 3 + 1);
340	PUSHs (Nullsv);	398	PUSHs (Nullsv);
341	/* this loop was inspired by pp_caller */	399	/* this loop was inspired by pp_caller */
342	for (;;)	400	for (;;)
343	{	401	{
344	while (cxix >= 0)	402	while (cxix >= 0)
…		…
350	CV *cv = cx->blk_sub.cv;	408	CV *cv = cx->blk_sub.cv;
351		409
352	if (CvDEPTH (cv))	410	if (CvDEPTH (cv))
353	{	411	{
354	EXTEND (SP, 3);	412	EXTEND (SP, 3);
355
356	PUSHs ((SV *)CvPADLIST (cv));	413	PUSHs ((SV *)CvPADLIST (cv));
357	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
358	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
359		416
360	CvDEPTH (cv) = 0;	417	CvDEPTH (cv) = 0;
361	get_padlist (cv);	418	get_padlist (aTHX_ cv);
362	}	419	}
363	}	420	}
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	}	421	}
373		422
374	if (top_si->si_type == PERLSI_MAIN)	423	if (top_si->si_type == PERLSI_MAIN)
375	break;	424	break;
376		425
…		…
380	}	429	}
381		430
382	PUTBACK;	431	PUTBACK;
383	}	432	}
384		433
385	c->defav = flags & TRANSFER_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	434	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;	435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
387	c->errsv = flags & TRANSFER_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	436	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		437	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
		438	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
388		439
389	#define VAR(name,type)c->name = PL_ ## name;	440	#define VAR(name,type)c->name = PL_ ## name;
390	# include "state.h"	441	# include "state.h"
391	#undef VAR	442	#undef VAR
392	}	443	}
…		…
395	* allocate various perl stacks. This is an exact copy	446	* allocate various perl stacks. This is an exact copy
396	* of perl.c:init_stacks, except that it uses less memory	447	* of perl.c:init_stacks, except that it uses less memory
397	* on the (sometimes correct) assumption that coroutines do	448	* on the (sometimes correct) assumption that coroutines do
398	* not usually need a lot of stackspace.	449	* not usually need a lot of stackspace.
399	*/	450	*/
		451	#if CORO_PREFER_PERL_FUNCTIONS
		452	# define coro_init_stacks init_stacks
		453	#else
400	static void	454	static void
401	coro_init_stacks ()	455	coro_init_stacks (pTHX)
402	{	456	{
403	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
404	PL_curstackinfo->si_type = PERLSI_MAIN;	458	PL_curstackinfo->si_type = PERLSI_MAIN;
405	PL_curstack = PL_curstackinfo->si_stack;	459	PL_curstack = PL_curstackinfo->si_stack;
406	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
434	New(54,PL_retstack,16,OP*);	488	New(54,PL_retstack,16,OP*);
435	PL_retstack_ix = 0;	489	PL_retstack_ix = 0;
436	PL_retstack_max = 16;	490	PL_retstack_max = 16;
437	#endif	491	#endif
438	}	492	}
		493	#endif
439		494
440	/*	495	/*
441	* destroy the stacks, the callchain etc...	496	* destroy the stacks, the callchain etc...
442	*/	497	*/
443	static void	498	static void
444	coro_destroy_stacks ()	499	coro_destroy_stacks (pTHX)
445	{	500	{
446	if (!IN_DESTRUCT)	501	if (!IN_DESTRUCT)
447	{	502	{
448	/* is this ugly, I ask? */	503	/* restore all saved variables and stuff */
449	LEAVE_SCOPE (0);	504	LEAVE_SCOPE (0);
		505	assert (PL_tmps_floor == -1);
450		506
451	/* sure it is, but more important: is it correct?? :/ */	507	/* free all temporaries */
452	FREETMPS;	508	FREETMPS;
		509	assert (PL_tmps_ix == -1);
453		510
		511	/* unwind all extra stacks */
454	/POPSTACK_TO (PL_mainstack);//D//use/	512	POPSTACK_TO (PL_mainstack);
		513
		514	/* unwind main stack */
		515	dounwind (-1);
455	}	516	}
456		517
457	while (PL_curstackinfo->si_next)	518	while (PL_curstackinfo->si_next)
458	PL_curstackinfo = PL_curstackinfo->si_next;	519	PL_curstackinfo = PL_curstackinfo->si_next;
459		520
460	while (PL_curstackinfo)	521	while (PL_curstackinfo)
461	{	522	{
462	PERL_SI *p = PL_curstackinfo->si_prev;	523	PERL_SI *p = PL_curstackinfo->si_prev;
463		524
464	{ /D//remove/
465	dSP;
466	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
467	PUTBACK; /* possibly superfluous */
468	}
469
470	if (!IN_DESTRUCT)	525	if (!IN_DESTRUCT)
471	{
472	dounwind (-1);/D//remove/
473	SvREFCNT_dec (PL_curstackinfo->si_stack);	526	SvREFCNT_dec (PL_curstackinfo->si_stack);
474	}
475		527
476	Safefree (PL_curstackinfo->si_cxstack);	528	Safefree (PL_curstackinfo->si_cxstack);
477	Safefree (PL_curstackinfo);	529	Safefree (PL_curstackinfo);
478	PL_curstackinfo = p;	530	PL_curstackinfo = p;
479	}	531	}
…		…
485	#if !PERL_VERSION_ATLEAST (5,9,0)	537	#if !PERL_VERSION_ATLEAST (5,9,0)
486	Safefree (PL_retstack);	538	Safefree (PL_retstack);
487	#endif	539	#endif
488	}	540	}
489		541
		542	/ coroutine stack handling **********************************************/
		543
490	static void	544	static void
491	setup_coro (struct coro *coro)	545	setup_coro (pTHX_ struct coro *coro)
492	{	546	{
493	/*	547	/*
494	* emulate part of the perl startup here.	548	* emulate part of the perl startup here.
495	*/	549	*/
496
497	coro_init_stacks ();	550	coro_init_stacks (aTHX);
498		551
499	PL_curcop = &PL_compiling;	552	PL_curcop = &PL_compiling;
500	PL_in_eval = EVAL_NULL;	553	PL_in_eval = EVAL_NULL;
		554	PL_comppad = 0;
501	PL_curpm = 0;	555	PL_curpm = 0;
502	PL_localizing = 0;	556	PL_localizing = 0;
503	PL_dirty = 0;	557	PL_dirty = 0;
504	PL_restartop = 0;	558	PL_restartop = 0;
505		559
…		…
513	Zero (&myop, 1, LOGOP);	567	Zero (&myop, 1, LOGOP);
514	myop.op_next = Nullop;	568	myop.op_next = Nullop;
515	myop.op_flags = OPf_WANT_VOID;	569	myop.op_flags = OPf_WANT_VOID;
516		570
517	PUSHMARK (SP);	571	PUSHMARK (SP);
518	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	572	XPUSHs (av_shift (GvAV (PL_defgv)));
519	PUTBACK;	573	PUTBACK;
520	PL_op = (OP *)&myop;	574	PL_op = (OP *)&myop;
521	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	575	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
522	SPAGAIN;	576	SPAGAIN;
523	}	577	}
524		578
525	ENTER; /* necessary e.g. for dounwind */	579	ENTER; /* necessary e.g. for dounwind */
526	}	580	}
527		581
528	static void	582	static void
529	free_coro_mortal ()	583	free_coro_mortal (pTHX)
530	{	584	{
531	if (coro_mortal)	585	if (coro_mortal)
532	{	586	{
533	SvREFCNT_dec (coro_mortal);	587	SvREFCNT_dec (coro_mortal);
534	coro_mortal = 0;	588	coro_mortal = 0;
535	}	589	}
536	}	590	}
537		591
538	/* inject a fake call to Coro::State::_cctx_init into the execution */	592	/* inject a fake call to Coro::State::_cctx_init into the execution */
		593	/* _cctx_init shoukld be careful, as it could be called at almost any time */
		594	/* during execution of a pelr program */
539	static void NOINLINE	595	static void NOINLINE
540	prepare_cctx (coro_cctx *cctx)	596	prepare_cctx (pTHX_ coro_cctx *cctx)
541	{	597	{
542	dSP;	598	dSP;
543	LOGOP myop;	599	LOGOP myop;
544		600
545	Zero (&myop, 1, LOGOP);	601	Zero (&myop, 1, LOGOP);
…		…
554	PL_op = (OP *)&myop;	610	PL_op = (OP *)&myop;
555	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	611	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
556	SPAGAIN;	612	SPAGAIN;
557	}	613	}
558		614
		615	/*
		616	* this is a _very_ stripped down perl interpreter ;)
		617	*/
559	static void	618	static void
560	coro_run (void *arg)	619	coro_run (void *arg)
561	{	620	{
		621	dTHX;
		622
562	/* coro_run is the alternative tail of transfer(), so unlock here. */	623	/* coro_run is the alternative tail of transfer(), so unlock here. */
563	UNLOCK;	624	UNLOCK;
564		625
565	/*
566	* this is a _very_ stripped down perl interpreter ;)
567	*/
568	PL_top_env = &PL_start_env;	626	PL_top_env = &PL_start_env;
569		627
570	/* inject call to cctx_init */	628	/* inject a fake subroutine call to cctx_init */
571	prepare_cctx ((coro_cctx *)arg);	629	prepare_cctx (aTHX_ (coro_cctx *)arg);
572		630
573	/* somebody will hit me for both perl_run and PL_restartop */	631	/* somebody or something will hit me for both perl_run and PL_restartop */
574	PL_restartop = PL_op;	632	PL_restartop = PL_op;
575	perl_run (PL_curinterp);	633	perl_run (PL_curinterp);
576		634
577	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	635	/*
578	abort ();	636	* If perl-run returns we assume exit() was being called or the coro
		637	* fell off the end, which seems to be the only valid (non-bug)
		638	* reason for perl_run to return. We try to exit by jumping to the
		639	* bootstrap-time "top" top_env, as we cannot restore the "main"
		640	* coroutine as Coro has no such concept
		641	*/
		642	PL_top_env = main_top_env;
		643	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
579	}	644	}
580		645
581	static coro_cctx *	646	static coro_cctx *
582	cctx_new ()	647	cctx_new ()
583	{	648	{
584	coro_cctx *cctx;	649	coro_cctx *cctx;
		650	void *stack_start;
		651	size_t stack_size;
585		652
586	++cctx_count;	653	++cctx_count;
587		654
588	New (0, cctx, 1, coro_cctx);	655	Newz (0, cctx, 1, coro_cctx);
589		656
590	#if HAVE_MMAP	657	#if HAVE_MMAP
591		658
592	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	659	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
593	/* mmap supposedly does allocate-on-write for us */	660	/* 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);	661	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
595		662
596	if (cctx->sptr == (void *)-1)	663	if (cctx->sptr != (void *)-1)
597	{
598	perror ("FATAL: unable to mmap stack for coroutine");
599	_exit (EXIT_FAILURE);
600	}	664	{
601
602	# if STACKGUARD	665	# if CORO_STACKGUARD
603	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	666	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
604	# endif	667	# endif
		668	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		669	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		670	cctx->mapped = 1;
		671	}
		672	else
		673	#endif
		674	{
		675	cctx->ssize = coro_stacksize * (long)sizeof (long);
		676	New (0, cctx->sptr, coro_stacksize, long);
605		677
606	#else
607
608	cctx->ssize = STACKSIZE * (long)sizeof (long);
609	New (0, cctx->sptr, STACKSIZE, long);
610
611	if (!cctx->sptr)	678	if (!cctx->sptr)
612	{	679	{
613	perror ("FATAL: unable to malloc stack for coroutine");	680	perror ("FATAL: unable to allocate stack for coroutine");
614	_exit (EXIT_FAILURE);	681	_exit (EXIT_FAILURE);
615	}	682	}
616		683
617	#endif	684	stack_start = cctx->sptr;
		685	stack_size = cctx->ssize;
		686	}
618		687
619	#if USE_VALGRIND	688	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);	689	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
627		690
628	return cctx;	691	return cctx;
629	}	692	}
630		693
631	static void	694	static void
…		…
634	if (!cctx)	697	if (!cctx)
635	return;	698	return;
636		699
637	--cctx_count;	700	--cctx_count;
638		701
639	#if USE_VALGRIND	702	#if CORO_USE_VALGRIND
640	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	703	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
641	#endif	704	#endif
642		705
643	#if HAVE_MMAP	706	#if HAVE_MMAP
		707	if (cctx->mapped)
644	munmap (cctx->sptr, cctx->ssize);	708	munmap (cctx->sptr, cctx->ssize);
645	#else	709	else
		710	#endif
646	Safefree (cctx->sptr);	711	Safefree (cctx->sptr);
647	#endif
648		712
649	Safefree (cctx);	713	Safefree (cctx);
650	}	714	}
651		715
652	static coro_cctx *	716	static coro_cctx *
653	cctx_get ()	717	cctx_get (pTHX)
654	{	718	{
655	coro_cctx *cctx;
656
657	if (cctx_first)	719	while (cctx_first)
658	{	720	{
659	cctx = cctx_first;	721	coro_cctx *cctx = cctx_first;
660	cctx_first = cctx->next;	722	cctx_first = cctx->next;
661	--cctx_idle;	723	--cctx_idle;
		724
		725	if (cctx->ssize >= coro_stacksize)
		726	return cctx;
		727
		728	cctx_destroy (cctx);
662	}	729	}
663	else	730
664	{
665	cctx = cctx_new ();
666	PL_op = PL_op->op_next;	731	PL_op = PL_op->op_next;
667	}
668
669	return cctx;	732	return cctx_new ();
670	}	733	}
671		734
672	static void	735	static void
673	cctx_put (coro_cctx *cctx)	736	cctx_put (coro_cctx *cctx)
674	{	737	{
…		…
686	++cctx_idle;	749	++cctx_idle;
687	cctx->next = cctx_first;	750	cctx->next = cctx_first;
688	cctx_first = cctx;	751	cctx_first = cctx;
689	}	752	}
690		753
		754	/ coroutine switching ***************************************************/
		755
691	/* never call directly, always through the coro_state_transfer global variable */	756	/* never call directly, always through the coro_state_transfer global variable */
692	static void NOINLINE	757	static void NOINLINE
693	transfer (struct coro prev, struct coro next, int flags)	758	transfer (pTHX_ struct coro prev, struct coro next)
694	{	759	{
695	dSTACKLEVEL;	760	dSTACKLEVEL;
696		761
697	/* sometimes transfer is only called to set idle_sp */	762	/* sometimes transfer is only called to set idle_sp */
698	if (flags == TRANSFER_SET_STACKLEVEL)	763	if (!next)
		764	{
699	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	765	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		766	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		767	}
700	else if (prev != next)	768	else if (prev != next)
701	{	769	{
702	coro_cctx *prev__cctx;	770	coro_cctx *prev__cctx;
703		771
704	if (prev->flags & CF_NEW)	772	if (prev->flags & CF_NEW)
…		…
715	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	783	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
716		784
717	if (next->flags & CF_RUNNING)	785	if (next->flags & CF_RUNNING)
718	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	786	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
719		787
		788	if (next->flags & CF_DESTROYED)
		789	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		790
720	prev->flags &= ~CF_RUNNING;	791	prev->flags &= ~CF_RUNNING;
721	next->flags \|= CF_RUNNING;	792	next->flags \|= CF_RUNNING;
722		793
723	LOCK;	794	LOCK;
724		795
725	if (next->flags & CF_NEW)	796	if (next->flags & CF_NEW)
726	{	797	{
727	/* need to start coroutine */	798	/* need to start coroutine */
728	next->flags &= ~CF_NEW;	799	next->flags &= ~CF_NEW;
729	/* first get rid of the old state */	800	/* first get rid of the old state */
730	SAVE (prev, -1);	801	save_perl (aTHX_ prev);
731	/* setup coroutine call */	802	/* setup coroutine call */
732	setup_coro (next);	803	setup_coro (aTHX_ next);
733	/* need a new stack */	804	/* need a new stack */
734	assert (!next->stack);	805	assert (!next->cctx);
735	}	806	}
736	else	807	else
737	{	808	{
738	/* coroutine already started */	809	/* coroutine already started */
739	SAVE (prev, flags);	810	save_perl (aTHX_ prev);
740	LOAD (next);	811	load_perl (aTHX_ next);
741	}	812	}
742		813
743	prev__cctx = prev->cctx;	814	prev__cctx = prev->cctx;
744		815
745	/* possibly "free" the cctx */	816	/* possibly "free" the cctx */
746	if (prev__cctx->idle_sp == STACKLEVEL)	817	if (prev__cctx->idle_sp == STACKLEVEL)
747	{	818	{
748	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	819	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
749	assert (PL_top_env == prev__cctx->top_env);	820	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
750		821
751	prev->cctx = 0;	822	prev->cctx = 0;
752		823
753	cctx_put (prev__cctx);	824	cctx_put (prev__cctx);
754	prev__cctx->inuse = 0;	825	prev__cctx->inuse = 0;
755	}	826	}
756		827
757	if (!next->cctx)	828	if (!next->cctx)
758	{	829	{
759	next->cctx = cctx_get ();	830	next->cctx = cctx_get (aTHX);
760	assert (!next->cctx->inuse);	831	assert (!next->cctx->inuse);
761	next->cctx->inuse = 1;	832	next->cctx->inuse = 1;
762	}	833	}
763		834
764	if (prev__cctx != next->cctx)	835	if (prev__cctx != next->cctx)
…		…
766	prev__cctx->top_env = PL_top_env;	837	prev__cctx->top_env = PL_top_env;
767	PL_top_env = next->cctx->top_env;	838	PL_top_env = next->cctx->top_env;
768	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	839	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
769	}	840	}
770		841
771	free_coro_mortal ();	842	free_coro_mortal (aTHX);
772
773	UNLOCK;	843	UNLOCK;
774	}	844	}
775	}	845	}
776		846
777	struct transfer_args	847	struct transfer_args
778	{	848	{
779	struct coro prev, next;	849	struct coro prev, next;
780	int flags;
781	};	850	};
782		851
783	#define TRANSFER(ta) transfer ((ta).prev, (ta).next, (ta).flags)	852	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
784		853
		854	/ high level stuff ******************************************************/
		855
785	static void	856	static int
786	coro_state_destroy (struct coro *coro)	857	coro_state_destroy (pTHX_ struct coro *coro)
787	{	858	{
788	if (coro->refcnt--)	859	if (coro->flags & CF_DESTROYED)
789	return;	860	return 0;
		861
		862	coro->flags \|= CF_DESTROYED;
		863
		864	if (coro->flags & CF_READY)
		865	{
		866	/* reduce nready, as destroying a ready coro effectively unreadies it */
		867	/* alternative: look through all ready queues and remove the coro */
		868	LOCK;
		869	--coro_nready;
		870	UNLOCK;
		871	}
		872	else
		873	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
790		874
791	if (coro->mainstack && coro->mainstack != main_mainstack)	875	if (coro->mainstack && coro->mainstack != main_mainstack)
792	{	876	{
793	struct coro temp;	877	struct coro temp;
		878
		879	assert (!(coro->flags & CF_RUNNING));
		880
		881	Zero (&temp, 1, struct coro);
		882	temp.save = CORO_SAVE_DEF;
794		883
795	if (coro->flags & CF_RUNNING)	884	if (coro->flags & CF_RUNNING)
796	croak ("FATAL: tried to destroy currently running coroutine");	885	croak ("FATAL: tried to destroy currently running coroutine");
797		886
798	SAVE ((&temp), TRANSFER_SAVE_ALL);	887	save_perl (aTHX_ &temp);
799	LOAD (coro);	888	load_perl (aTHX_ coro);
800		889
801	coro_destroy_stacks ();	890	coro_destroy_stacks (aTHX);
802		891
803	LOAD ((&temp)); /* this will get rid of defsv etc.. */	892	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
804		893
805	coro->mainstack = 0;	894	coro->mainstack = 0;
806	}	895	}
807		896
808	cctx_destroy (coro->cctx);	897	cctx_destroy (coro->cctx);
809	SvREFCNT_dec (coro->args);	898	SvREFCNT_dec (coro->args);
810	Safefree (coro);	899
		900	return 1;
811	}	901	}
812		902
813	static int	903	static int
814	coro_state_clear (pTHX_ SV sv, MAGIC mg)	904	coro_state_free (pTHX_ SV sv, MAGIC mg)
815	{	905	{
816	struct coro coro = (struct coro )mg->mg_ptr;	906	struct coro coro = (struct coro )mg->mg_ptr;
817	mg->mg_ptr = 0;	907	mg->mg_ptr = 0;
818		908
		909	if (--coro->refcnt < 0)
		910	{
819	coro_state_destroy (coro);	911	coro_state_destroy (aTHX_ coro);
		912	Safefree (coro);
		913	}
820		914
821	return 0;	915	return 0;
822	}	916	}
823		917
824	static int	918	static int
…		…
831	return 0;	925	return 0;
832	}	926	}
833		927
834	static MGVTBL coro_state_vtbl = {	928	static MGVTBL coro_state_vtbl = {
835	0, 0, 0, 0,	929	0, 0, 0, 0,
836	coro_state_clear,	930	coro_state_free,
837	0,	931	0,
838	#ifdef MGf_DUP	932	#ifdef MGf_DUP
839	coro_state_dup,	933	coro_state_dup,
840	#else	934	#else
841	# define MGf_DUP 0	935	# define MGf_DUP 0
842	#endif	936	#endif
843	};	937	};
844		938
845	static struct coro *	939	static struct coro *
846	SvSTATE (SV *coro)	940	SvSTATE_ (pTHX_ SV *coro)
847	{	941	{
848	HV *stash;	942	HV *stash;
849	MAGIC *mg;	943	MAGIC *mg;
850		944
851	if (SvROK (coro))	945	if (SvROK (coro))
…		…
857	/* very slow, but rare, check */	951	/* very slow, but rare, check */
858	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	952	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
859	croak ("Coro::State object required");	953	croak ("Coro::State object required");
860	}	954	}
861		955
862	mg = SvMAGIC (coro);	956	mg = CORO_MAGIC (coro);
863	assert (mg->mg_type == PERL_MAGIC_ext);
864	return (struct coro *)mg->mg_ptr;	957	return (struct coro *)mg->mg_ptr;
865	}	958	}
866		959
		960	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		961
867	static void	962	static void
868	prepare_transfer (struct transfer_args ta, SV prev, SV *next, int flags)	963	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
869	{	964	{
870	ta->prev = SvSTATE (prev);	965	ta->prev = SvSTATE (prev_sv);
871	ta->next = SvSTATE (next);	966	ta->next = SvSTATE (next_sv);
872	ta->flags = flags;
873	}	967	}
874		968
875	static void	969	static void
876	api_transfer (SV prev, SV next, int flags)	970	api_transfer (SV prev_sv, SV next_sv)
877	{	971	{
		972	dTHX;
878	struct transfer_args ta;	973	struct transfer_args ta;
879		974
880	prepare_transfer (&ta, prev, next, flags);	975	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
881	TRANSFER (ta);	976	TRANSFER (ta);
882	}	977	}
883		978
		979	static int
		980	api_save (SV *coro_sv, int new_save)
		981	{
		982	dTHX;
		983	struct coro *coro = SvSTATE (coro_sv);
		984	int old_save = coro->save;
		985
		986	if (new_save >= 0)
		987	coro->save = new_save;
		988
		989	return old_save;
		990	}
		991
884	/ Coro ******************************************************************/	992	/ Coro ******************************************************************/
885		993
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	994	static void
899	coro_enq (SV *coro_sv)	995	coro_enq (pTHX_ SV *coro_sv)
900	{	996	{
901	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	997	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
902	coro_nready++;
903	}	998	}
904		999
905	static SV *	1000	static SV *
906	coro_deq (int min_prio)	1001	coro_deq (pTHX_ int min_prio)
907	{	1002	{
908	int prio = PRIO_MAX - PRIO_MIN;	1003	int prio = PRIO_MAX - PRIO_MIN;
909		1004
910	min_prio -= PRIO_MIN;	1005	min_prio -= PRIO_MIN;
911	if (min_prio < 0)	1006	if (min_prio < 0)
912	min_prio = 0;	1007	min_prio = 0;
913		1008
914	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1009	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
915	if (AvFILLp (coro_ready [prio]) >= 0)	1010	if (AvFILLp (coro_ready [prio]) >= 0)
916	{
917	coro_nready--;
918	return av_shift (coro_ready [prio]);	1011	return av_shift (coro_ready [prio]);
919	}
920		1012
921	return 0;	1013	return 0;
922	}	1014	}
923		1015
924	static int	1016	static int
925	api_ready (SV *coro_sv)	1017	api_ready (SV *coro_sv)
926	{	1018	{
		1019	dTHX;
927	struct coro *coro;	1020	struct coro *coro;
928		1021
929	if (SvROK (coro_sv))	1022	if (SvROK (coro_sv))
930	coro_sv = SvRV (coro_sv);	1023	coro_sv = SvRV (coro_sv);
931		1024
932	coro = SvSTATE (coro_sv);	1025	coro = SvSTATE (coro_sv);
933		1026
934	if (coro->flags & CF_READY)	1027	if (coro->flags & CF_READY)
935	return 0;	1028	return 0;
936		1029
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;	1030	coro->flags \|= CF_READY;
943		1031
944	LOCK;	1032	LOCK;
945	coro_enq (SvREFCNT_inc (coro_sv));	1033	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1034	++coro_nready;
946	UNLOCK;	1035	UNLOCK;
947		1036
948	return 1;	1037	return 1;
949	}	1038	}
950		1039
951	static int	1040	static int
952	api_is_ready (SV *coro_sv)	1041	api_is_ready (SV *coro_sv)
953	{	1042	{
		1043	dTHX;
954	return !!SvSTATE (coro_sv)->flags & CF_READY;	1044	return !!(SvSTATE (coro_sv)->flags & CF_READY);
955	}	1045	}
956		1046
957	static void	1047	static void
958	prepare_schedule (struct transfer_args *ta)	1048	prepare_schedule (pTHX_ struct transfer_args *ta)
959	{	1049	{
960	SV prev, next;	1050	SV prev_sv, next_sv;
961		1051
962	for (;;)	1052	for (;;)
963	{	1053	{
964	LOCK;	1054	LOCK;
965	next = coro_deq (PRIO_MIN);	1055	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1056
		1057	/* nothing to schedule: call the idle handler */
		1058	if (!next_sv)
		1059	{
		1060	dSP;
		1061	UNLOCK;
		1062
		1063	ENTER;
		1064	SAVETMPS;
		1065
		1066	PUSHMARK (SP);
		1067	PUTBACK;
		1068	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1069
		1070	FREETMPS;
		1071	LEAVE;
		1072	continue;
		1073	}
		1074
		1075	ta->next = SvSTATE (next_sv);
		1076
		1077	/* cannot transfer to destroyed coros, skip and look for next */
		1078	if (ta->next->flags & CF_DESTROYED)
		1079	{
		1080	UNLOCK;
		1081	SvREFCNT_dec (next_sv);
		1082	/* coro_nready is already taken care of by destroy */
		1083	continue;
		1084	}
		1085
		1086	--coro_nready;
966	UNLOCK;	1087	UNLOCK;
967
968	if (next)
969	break;	1088	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	}	1089	}
984	}
985
986	prev = SvRV (coro_current);
987	SvRV_set (coro_current, next);
988		1090
989	/* free this only after the transfer */	1091	/* free this only after the transfer */
		1092	prev_sv = SvRV (coro_current);
		1093	SvRV_set (coro_current, next_sv);
		1094	ta->prev = SvSTATE (prev_sv);
		1095
		1096	assert (ta->next->flags & CF_READY);
		1097	ta->next->flags &= ~CF_READY;
		1098
990	LOCK;	1099	LOCK;
991	free_coro_mortal ();	1100	free_coro_mortal (aTHX);
		1101	coro_mortal = prev_sv;
992	UNLOCK;	1102	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	}	1103	}
1005		1104
1006	static void	1105	static void
1007	prepare_cede (struct transfer_args *ta)	1106	prepare_cede (pTHX_ struct transfer_args *ta)
1008	{	1107	{
1009	api_ready (coro_current);	1108	api_ready (coro_current);
1010
1011	prepare_schedule (ta);	1109	prepare_schedule (aTHX_ ta);
		1110	}
		1111
		1112	static int
		1113	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1114	{
		1115	if (coro_nready)
		1116	{
		1117	SV *prev = SvRV (coro_current);
		1118	prepare_schedule (aTHX_ ta);
		1119	api_ready (prev);
		1120	return 1;
		1121	}
		1122	else
		1123	return 0;
1012	}	1124	}
1013		1125
1014	static void	1126	static void
1015	api_schedule (void)	1127	api_schedule (void)
1016	{	1128	{
		1129	dTHX;
1017	struct transfer_args ta;	1130	struct transfer_args ta;
1018		1131
1019	prepare_schedule (&ta);	1132	prepare_schedule (aTHX_ &ta);
1020	TRANSFER (ta);	1133	TRANSFER (ta);
1021	}	1134	}
1022		1135
1023	static void	1136	static int
1024	api_cede (void)	1137	api_cede (void)
1025	{	1138	{
		1139	dTHX;
1026	struct transfer_args ta;	1140	struct transfer_args ta;
1027		1141
1028	prepare_cede (&ta);	1142	prepare_cede (aTHX_ &ta);
		1143
		1144	if (ta.prev != ta.next)
		1145	{
1029	TRANSFER (ta);	1146	TRANSFER (ta);
		1147	return 1;
		1148	}
		1149	else
		1150	return 0;
		1151	}
		1152
		1153	static int
		1154	api_cede_notself (void)
		1155	{
		1156	dTHX;
		1157	struct transfer_args ta;
		1158
		1159	if (prepare_cede_notself (aTHX_ &ta))
		1160	{
		1161	TRANSFER (ta);
		1162	return 1;
		1163	}
		1164	else
		1165	return 0;
1030	}	1166	}
1031		1167
1032	MODULE = Coro::State PACKAGE = Coro::State	1168	MODULE = Coro::State PACKAGE = Coro::State
1033		1169
1034	PROTOTYPES: DISABLE	1170	PROTOTYPES: DISABLE
…		…
1040	#endif	1176	#endif
1041	BOOT_PAGESIZE;	1177	BOOT_PAGESIZE;
1042		1178
1043	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1179	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1044		1180
1045	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (TRANSFER_SAVE_DEFAV));	1181	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1046	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (TRANSFER_SAVE_DEFSV));	1182	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1047	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (TRANSFER_SAVE_ERRSV));	1183	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
		1184	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1185	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1186	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
		1187	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1048		1188
1049	main_mainstack = PL_mainstack;	1189	main_mainstack = PL_mainstack;
		1190	main_top_env = PL_top_env;
		1191
		1192	while (main_top_env->je_prev)
		1193	main_top_env = main_top_env->je_prev;
1050		1194
1051	coroapi.ver = CORO_API_VERSION;	1195	coroapi.ver = CORO_API_VERSION;
1052	coroapi.transfer = api_transfer;	1196	coroapi.transfer = api_transfer;
1053		1197
1054	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1198	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1062	HV *hv;	1206	HV *hv;
1063	int i;	1207	int i;
1064		1208
1065	Newz (0, coro, 1, struct coro);	1209	Newz (0, coro, 1, struct coro);
1066	coro->args = newAV ();	1210	coro->args = newAV ();
		1211	coro->save = CORO_SAVE_DEF;
1067	coro->flags = CF_NEW;	1212	coro->flags = CF_NEW;
1068		1213
1069	hv = newHV ();	1214	hv = newHV ();
1070	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1215	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));	1216	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1072		1217
1073	for (i = 1; i < items; i++)	1218	for (i = 1; i < items; i++)
1074	av_push (coro->args, newSVsv (ST (i)));	1219	av_push (coro->args, newSVsv (ST (i)));
1075	}	1220	}
1076	OUTPUT:	1221	OUTPUT:
		1222	RETVAL
		1223
		1224	int
		1225	save (SV *coro, int new_save = -1)
		1226	CODE:
		1227	RETVAL = api_save (coro, new_save);
		1228	OUTPUT:
		1229	RETVAL
		1230
		1231	int
		1232	save_also (SV *coro_sv, int save_also)
		1233	CODE:
		1234	{
		1235	struct coro *coro = SvSTATE (coro_sv);
		1236	RETVAL = coro->save;
		1237	coro->save \|= save_also;
		1238	}
		1239	OUTPUT:
1077	RETVAL	1240	RETVAL
1078		1241
1079	void	1242	void
1080	_set_stacklevel (...)	1243	_set_stacklevel (...)
1081	ALIAS:	1244	ALIAS:
1082	Coro::State::transfer = 1	1245	Coro::State::transfer = 1
1083	Coro::schedule = 2	1246	Coro::schedule = 2
1084	Coro::cede = 3	1247	Coro::cede = 3
		1248	Coro::cede_notself = 4
1085	CODE:	1249	CODE:
1086	{	1250	{
1087	struct transfer_args ta;	1251	struct transfer_args ta;
1088		1252
1089	switch (ix)	1253	switch (ix)
1090	{	1254	{
1091	case 0:	1255	case 0:
1092	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));	1256	ta.prev = (struct coro )INT2PTR (coro_cctx , SvIV (ST (0)));
1093	ta.next = 0;	1257	ta.next = 0;
1094	ta.flags = TRANSFER_SET_STACKLEVEL;
1095	break;	1258	break;
1096		1259
1097	case 1:	1260	case 1:
1098	if (items != 3)	1261	if (items != 2)
1099	croak ("Coro::State::transfer (prev,next,flags) expects three arguments, not %d", items);	1262	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1100		1263
1101	prepare_transfer (&ta, ST (0), ST (1), SvIV (ST (2)));	1264	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1102	break;	1265	break;
1103		1266
1104	case 2:	1267	case 2:
1105	prepare_schedule (&ta);	1268	prepare_schedule (aTHX_ &ta);
1106	break;	1269	break;
1107		1270
1108	case 3:	1271	case 3:
1109	prepare_cede (&ta);	1272	prepare_cede (aTHX_ &ta);
		1273	break;
		1274
		1275	case 4:
		1276	if (!prepare_cede_notself (aTHX_ &ta))
		1277	XSRETURN_EMPTY;
		1278
1110	break;	1279	break;
1111	}	1280	}
1112		1281
		1282	BARRIER;
1113	TRANSFER (ta);	1283	TRANSFER (ta);
1114	}
1115		1284
1116	void	1285	if (GIMME_V != G_VOID && ta.next != ta.prev)
1117	_clone_state_from (SV dst, SV src)	1286	XSRETURN_YES;
		1287	}
		1288
		1289	bool
		1290	_destroy (SV *coro_sv)
1118	CODE:	1291	CODE:
1119	{	1292	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1120	struct coro *coro_src = SvSTATE (src);	1293	OUTPUT:
1121		1294	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		1295
1128	void	1296	void
1129	_exit (code)	1297	_exit (code)
1130	int code	1298	int code
1131	PROTOTYPE: $	1299	PROTOTYPE: $
1132	CODE:	1300	CODE:
1133	_exit (code);	1301	_exit (code);
1134		1302
1135	int	1303	int
		1304	cctx_stacksize (int new_stacksize = 0)
		1305	CODE:
		1306	RETVAL = coro_stacksize;
		1307	if (new_stacksize)
		1308	coro_stacksize = new_stacksize;
		1309	OUTPUT:
		1310	RETVAL
		1311
		1312	int
1136	cctx_count ()	1313	cctx_count ()
1137	CODE:	1314	CODE:
1138	RETVAL = cctx_count;	1315	RETVAL = cctx_count;
1139	OUTPUT:	1316	OUTPUT:
1140	RETVAL	1317	RETVAL
…		…
1168	coro_ready[i] = newAV ();	1345	coro_ready[i] = newAV ();
1169		1346
1170	{	1347	{
1171	SV *sv = perl_get_sv("Coro::API", 1);	1348	SV *sv = perl_get_sv("Coro::API", 1);
1172		1349
1173	coroapi.schedule = api_schedule;	1350	coroapi.schedule = api_schedule;
		1351	coroapi.save = api_save;
1174	coroapi.cede = api_cede;	1352	coroapi.cede = api_cede;
		1353	coroapi.cede_notself = api_cede_notself;
1175	coroapi.ready = api_ready;	1354	coroapi.ready = api_ready;
1176	coroapi.is_ready = api_is_ready;	1355	coroapi.is_ready = api_is_ready;
1177	coroapi.nready = &coro_nready;	1356	coroapi.nready = &coro_nready;
1178	coroapi.current = coro_current;	1357	coroapi.current = coro_current;
1179		1358
1180	GCoroAPI = &coroapi;	1359	GCoroAPI = &coroapi;
1181	sv_setiv (sv, (IV)&coroapi);	1360	sv_setiv (sv, (IV)&coroapi);
1182	SvREADONLY_on (sv);	1361	SvREADONLY_on (sv);
1183	}	1362	}
1184	}	1363	}
		1364
		1365	void
		1366	_set_current (SV *current)
		1367	PROTOTYPE: $
		1368	CODE:
		1369	SvREFCNT_dec (SvRV (coro_current));
		1370	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));
1185		1371
1186	int	1372	int
1187	prio (Coro::State coro, int newprio = 0)	1373	prio (Coro::State coro, int newprio = 0)
1188	ALIAS:	1374	ALIAS:
1189	nice = 1	1375	nice = 1
…		…
1192	RETVAL = coro->prio;	1378	RETVAL = coro->prio;
1193		1379
1194	if (items > 1)	1380	if (items > 1)
1195	{	1381	{
1196	if (ix)	1382	if (ix)
1197	newprio += coro->prio;	1383	newprio = coro->prio - newprio;
1198		1384
1199	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1385	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1200	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1386	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1201		1387
1202	coro->prio = newprio;	1388	coro->prio = newprio;
1203	}	1389	}
1204	}	1390	}
		1391	OUTPUT:
		1392	RETVAL
1205		1393
1206	SV *	1394	SV *
1207	ready (SV *self)	1395	ready (SV *self)
1208	PROTOTYPE: $	1396	PROTOTYPE: $
1209	CODE:	1397	CODE:
…		…
1225	CODE:	1413	CODE:
1226	RETVAL = coro_nready;	1414	RETVAL = coro_nready;
1227	OUTPUT:	1415	OUTPUT:
1228	RETVAL	1416	RETVAL
1229		1417
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	1418	MODULE = Coro::State PACKAGE = Coro::AIO
1238		1419
1239	SV *	1420	SV *
1240	_get_state ()	1421	_get_state ()
1241	CODE:	1422	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC vs. Revision 1.149 by root, Sat Apr 14 15:06:05 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.121 by root, Sat Dec 2 20:40:25 2006 UTC vs.
Revision 1.149 by root, Sat Apr 14 15:06:05 2007 UTC