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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC vs.
Revision 1.150 by root, Wed Jun 13 21:04:48 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"
…		…
99	#else	117	#else
100	# define LOCK (void)0	118	# define LOCK (void)0
101	# define UNLOCK (void)0	119	# define UNLOCK (void)0
102	#endif	120	#endif
103		121
		122	/* helper storage struct for Coro::AIO */
104	struct io_state	123	struct io_state
105	{	124	{
106	int errorno;	125	int errorno;
107	I32 laststype;	126	I32 laststype;
108	int laststatval;	127	int laststatval;
109	Stat_t statcache;	128	Stat_t statcache;
110	};	129	};
111		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
112	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
113	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;
114	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
115	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
116		137
117	static struct coro_cctx *cctx_first;	138	static struct coro_cctx *cctx_first;
118	static int cctx_count, cctx_idle;	139	static int cctx_count, cctx_idle;
…		…
121	typedef struct coro_cctx {	142	typedef struct coro_cctx {
122	struct coro_cctx *next;	143	struct coro_cctx *next;
123		144
124	/* the stack */	145	/* the stack */
125	void *sptr;	146	void *sptr;
126	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
127		148
128	/* cpu state */	149	/* cpu state */
129	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 */
130	JMPENV *top_env;	152	JMPENV *top_env;
131	coro_context cctx;	153	coro_context cctx;
132		154
133	int inuse;
134
135	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
136	int valgrind_id;	156	int valgrind_id;
137	#endif	157	#endif
		158	char inuse, mapped;
138	} coro_cctx;	159	} coro_cctx;
139		160
140	enum {	161	enum {
141	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
142	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
143	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 */
144	};	166	};
145		167
146	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
147	struct coro {	169	struct coro {
148	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
…		…
156		178
157	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
158	AV defav; / @_ */	180	AV defav; / @_ */
159	SV defsv; / $_ */	181	SV defsv; / $_ */
160	SV errsv; / $@ */	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
161	SV irssv; / $/ */	184	SV irssv; / $/ */
162	SV irssv_sv; / real $/ cache */	185	SV irssv_sv; / real $/ cache */
163		186
164	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
165	# include "state.h"	188	# include "state.h"
…		…
170	};	193	};
171		194
172	typedef struct coro *Coro__State;	195	typedef struct coro *Coro__State;
173	typedef struct coro *Coro__State_or_hashref;	196	typedef struct coro *Coro__State_or_hashref;
174		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
175	static AV *	214	static AV *
176	coro_clone_padlist (CV *cv)	215	coro_clone_padlist (pTHX_ CV *cv)
177	{	216	{
178	AV *padlist = CvPADLIST (cv);	217	AV *padlist = CvPADLIST (cv);
179	AV newpadlist, newpad;	218	AV newpadlist, newpad;
180		219
181	newpadlist = newAV ();	220	newpadlist = newAV ();
…		…
193		232
194	return newpadlist;	233	return newpadlist;
195	}	234	}
196		235
197	static void	236	static void
198	free_padlist (AV *padlist)	237	free_padlist (pTHX_ AV *padlist)
199	{	238	{
200	/* may be during global destruction */	239	/* may be during global destruction */
201	if (SvREFCNT (padlist))	240	if (SvREFCNT (padlist))
202	{	241	{
203	I32 i = AvFILLp (padlist);	242	I32 i = AvFILLp (padlist);
…		…
224	AV *padlist;	263	AV *padlist;
225	AV av = (AV )mg->mg_obj;	264	AV av = (AV )mg->mg_obj;
226		265
227	/* casting is fun. */	266	/* casting is fun. */
228	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	267	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
229	free_padlist (padlist);	268	free_padlist (aTHX_ padlist);
230		269
231	SvREFCNT_dec (av);	270	SvREFCNT_dec (av);
232		271
233	return 0;	272	return 0;
234	}	273	}
…		…
244	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
245	: 0	284	: 0
246		285
247	/* the next two functions merely cache the padlists */	286	/* the next two functions merely cache the padlists */
248	static void	287	static void
249	get_padlist (CV *cv)	288	get_padlist (pTHX_ CV *cv)
250	{	289	{
251	MAGIC *mg = CORO_MAGIC (cv);	290	MAGIC *mg = CORO_MAGIC (cv);
252	AV *av;	291	AV *av;
253		292
254	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
255	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	294	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
256	else	295	else
257	{	296	{
258	#if 0	297	#if CORO_PREFER_PERL_FUNCTIONS
259	/* this is probably cleaner, but also slower? */	298	/* this is probably cleaner, but also slower? */
260	CV *cp = Perl_cv_clone (cv);	299	CV *cp = Perl_cv_clone (cv);
261	CvPADLIST (cv) = CvPADLIST (cp);	300	CvPADLIST (cv) = CvPADLIST (cp);
262	CvPADLIST (cp) = 0;	301	CvPADLIST (cp) = 0;
263	SvREFCNT_dec (cp);	302	SvREFCNT_dec (cp);
264	#else	303	#else
265	CvPADLIST (cv) = coro_clone_padlist (cv);	304	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
266	#endif	305	#endif
267	}	306	}
268	}	307	}
269		308
270	static void	309	static void
271	put_padlist (CV *cv)	310	put_padlist (pTHX_ CV *cv)
272	{	311	{
273	MAGIC *mg = CORO_MAGIC (cv);	312	MAGIC *mg = CORO_MAGIC (cv);
274	AV *av;	313	AV *av;
275		314
276	if (!mg)	315	if (!mg)
…		…
287	av_extend (av, AvMAX (av) + 1);	326	av_extend (av, AvMAX (av) + 1);
288		327
289	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	328	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
290	}	329	}
291		330
		331	/ load & save, init *****************************************************/
		332
292	#define SB do {	333	#define SB do {
293	#define SE } while (0)	334	#define SE } while (0)
294		335
295	#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
296		337
297	static void	338	static void
298	load_perl (Coro__State c)	339	load_perl (pTHX_ Coro__State c)
299	{	340	{
300	#define VAR(name,type) PL_ ## name = c->name;	341	#define VAR(name,type) PL_ ## name = c->name;
301	# include "state.h"	342	# include "state.h"
302	#undef VAR	343	#undef VAR
303		344
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	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
307	if (c->irssv)	350	if (c->irssv)
308	{	351	{
309	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	352	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		353	{
310	SvREFCNT_dec (c->irssv);	354	SvREFCNT_dec (c->irssv);
		355	c->irssv = 0;
		356	}
311	else	357	else
312	{	358	{
313	REPLACE_SV (PL_rs, c->irssv);	359	REPLACE_SV (PL_rs, c->irssv);
314	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
315	sv_setsv (c->irssv_sv, PL_rs);	361	sv_setsv (c->irssv_sv, PL_rs);
…		…
321	CV *cv;	367	CV *cv;
322		368
323	/* now do the ugly restore mess */	369	/* now do the ugly restore mess */
324	while ((cv = (CV *)POPs))	370	while ((cv = (CV *)POPs))
325	{	371	{
326	put_padlist (cv); /* mark this padlist as available */	372	put_padlist (aTHX_ cv); /* mark this padlist as available */
327	CvDEPTH (cv) = PTR2IV (POPs);	373	CvDEPTH (cv) = PTR2IV (POPs);
328	CvPADLIST (cv) = (AV *)POPs;	374	CvPADLIST (cv) = (AV *)POPs;
329	}	375	}
330		376
331	PUTBACK;	377	PUTBACK;
332	}	378	}
		379	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
333	}	380	}
334		381
335	static void	382	static void
336	save_perl (Coro__State c)	383	save_perl (pTHX_ Coro__State c)
337	{	384	{
		385	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
338	{	386	{
339	dSP;	387	dSP;
340	I32 cxix = cxstack_ix;	388	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	389	PERL_CONTEXT *ccstk = cxstack;
342	PERL_SI *top_si = PL_curstackinfo;	390	PERL_SI *top_si = PL_curstackinfo;
…		…
344	/*	392	/*
345	* 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
346	* (and reinitialize) all cv's in the whole callchain :(	394	* (and reinitialize) all cv's in the whole callchain :(
347	*/	395	*/
348		396
		397	EXTEND (SP, 3 + 1);
349	PUSHs (Nullsv);	398	PUSHs (Nullsv);
350	/* this loop was inspired by pp_caller */	399	/* this loop was inspired by pp_caller */
351	for (;;)	400	for (;;)
352	{	401	{
353	while (cxix >= 0)	402	while (cxix >= 0)
…		…
359	CV *cv = cx->blk_sub.cv;	408	CV *cv = cx->blk_sub.cv;
360		409
361	if (CvDEPTH (cv))	410	if (CvDEPTH (cv))
362	{	411	{
363	EXTEND (SP, 3);	412	EXTEND (SP, 3);
364
365	PUSHs ((SV *)CvPADLIST (cv));	413	PUSHs ((SV *)CvPADLIST (cv));
366	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	415	PUSHs ((SV *)cv);
368		416
369	CvDEPTH (cv) = 0;	417	CvDEPTH (cv) = 0;
370	get_padlist (cv);	418	get_padlist (aTHX_ cv);
371	}	419	}
372	}	420	}
373	#ifdef CXt_FORMAT
374	else if (CxTYPE (cx) == CXt_FORMAT)
375	{
376	/* I never used formats, so how should I know how these are implemented? */
377	/* my bold guess is as a simple, plain sub... */
378	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
379	}
380	#endif
381	}	421	}
382		422
383	if (top_si->si_type == PERLSI_MAIN)	423	if (top_si->si_type == PERLSI_MAIN)
384	break;	424	break;
385		425
…		…
392	}	432	}
393		433
394	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	434	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
395	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
396	c->errsv = c->save & CORO_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;
397	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	438	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		439
399	#define VAR(name,type)c->name = PL_ ## name;	440	#define VAR(name,type)c->name = PL_ ## name;
400	# include "state.h"	441	# include "state.h"
401	#undef VAR	442	#undef VAR
…		…
405	* allocate various perl stacks. This is an exact copy	446	* allocate various perl stacks. This is an exact copy
406	* of perl.c:init_stacks, except that it uses less memory	447	* of perl.c:init_stacks, except that it uses less memory
407	* on the (sometimes correct) assumption that coroutines do	448	* on the (sometimes correct) assumption that coroutines do
408	* not usually need a lot of stackspace.	449	* not usually need a lot of stackspace.
409	*/	450	*/
		451	#if CORO_PREFER_PERL_FUNCTIONS
		452	# define coro_init_stacks init_stacks
		453	#else
410	static void	454	static void
411	coro_init_stacks ()	455	coro_init_stacks (pTHX)
412	{	456	{
413	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
414	PL_curstackinfo->si_type = PERLSI_MAIN;	458	PL_curstackinfo->si_type = PERLSI_MAIN;
415	PL_curstack = PL_curstackinfo->si_stack;	459	PL_curstack = PL_curstackinfo->si_stack;
416	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
444	New(54,PL_retstack,16,OP*);	488	New(54,PL_retstack,16,OP*);
445	PL_retstack_ix = 0;	489	PL_retstack_ix = 0;
446	PL_retstack_max = 16;	490	PL_retstack_max = 16;
447	#endif	491	#endif
448	}	492	}
		493	#endif
449		494
450	/*	495	/*
451	* destroy the stacks, the callchain etc...	496	* destroy the stacks, the callchain etc...
452	*/	497	*/
453	static void	498	static void
454	coro_destroy_stacks ()	499	coro_destroy_stacks (pTHX)
455	{	500	{
456	if (!IN_DESTRUCT)	501	if (!IN_DESTRUCT)
457	{	502	{
458	/* is this ugly, I ask? */	503	/* restore all saved variables and stuff */
459	LEAVE_SCOPE (0);	504	LEAVE_SCOPE (0);
		505	assert (PL_tmps_floor == -1);
460		506
461	/* sure it is, but more important: is it correct?? :/ */	507	/* free all temporaries */
462	FREETMPS;	508	FREETMPS;
		509	assert (PL_tmps_ix == -1);
463		510
		511	/* unwind all extra stacks */
464	/POPSTACK_TO (PL_mainstack);//D//use/	512	POPSTACK_TO (PL_mainstack);
		513
		514	/* unwind main stack */
		515	dounwind (-1);
465	}	516	}
466		517
467	while (PL_curstackinfo->si_next)	518	while (PL_curstackinfo->si_next)
468	PL_curstackinfo = PL_curstackinfo->si_next;	519	PL_curstackinfo = PL_curstackinfo->si_next;
469		520
470	while (PL_curstackinfo)	521	while (PL_curstackinfo)
471	{	522	{
472	PERL_SI *p = PL_curstackinfo->si_prev;	523	PERL_SI *p = PL_curstackinfo->si_prev;
473		524
474	{ /D//remove/
475	dSP;
476	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
477	PUTBACK; /* possibly superfluous */
478	}
479
480	if (!IN_DESTRUCT)	525	if (!IN_DESTRUCT)
481	{
482	dounwind (-1);/D//remove/
483	SvREFCNT_dec (PL_curstackinfo->si_stack);	526	SvREFCNT_dec (PL_curstackinfo->si_stack);
484	}
485		527
486	Safefree (PL_curstackinfo->si_cxstack);	528	Safefree (PL_curstackinfo->si_cxstack);
487	Safefree (PL_curstackinfo);	529	Safefree (PL_curstackinfo);
488	PL_curstackinfo = p;	530	PL_curstackinfo = p;
489	}	531	}
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	537	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	538	Safefree (PL_retstack);
497	#endif	539	#endif
498	}	540	}
499		541
		542	/ coroutine stack handling **********************************************/
		543
500	static void	544	static void
501	setup_coro (struct coro *coro)	545	setup_coro (pTHX_ struct coro *coro)
502	{	546	{
503	/*	547	/*
504	* emulate part of the perl startup here.	548	* emulate part of the perl startup here.
505	*/	549	*/
506
507	coro_init_stacks ();	550	coro_init_stacks (aTHX);
508		551
509	PL_curcop = &PL_compiling;	552	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	553	PL_in_eval = EVAL_NULL;
		554	PL_comppad = 0;
511	PL_curpm = 0;	555	PL_curpm = 0;
512	PL_localizing = 0;	556	PL_localizing = 0;
513	PL_dirty = 0;	557	PL_dirty = 0;
514	PL_restartop = 0;	558	PL_restartop = 0;
515		559
…		…
523	Zero (&myop, 1, LOGOP);	567	Zero (&myop, 1, LOGOP);
524	myop.op_next = Nullop;	568	myop.op_next = Nullop;
525	myop.op_flags = OPf_WANT_VOID;	569	myop.op_flags = OPf_WANT_VOID;
526		570
527	PUSHMARK (SP);	571	PUSHMARK (SP);
528	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	572	XPUSHs (av_shift (GvAV (PL_defgv)));
529	PUTBACK;	573	PUTBACK;
530	PL_op = (OP *)&myop;	574	PL_op = (OP *)&myop;
531	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	575	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
532	SPAGAIN;	576	SPAGAIN;
533	}	577	}
534		578
535	ENTER; /* necessary e.g. for dounwind */	579	ENTER; /* necessary e.g. for dounwind */
536	}	580	}
537		581
538	static void	582	static void
539	free_coro_mortal ()	583	free_coro_mortal (pTHX)
540	{	584	{
541	if (coro_mortal)	585	if (coro_mortal)
542	{	586	{
543	SvREFCNT_dec (coro_mortal);	587	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	588	coro_mortal = 0;
545	}	589	}
546	}	590	}
547		591
548	/* 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 should be careful, as it could be called at almost any time */
		594	/* during execution of a perl program */
549	static void NOINLINE	595	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	596	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	597	{
552	dSP;	598	dSP;
553	LOGOP myop;	599	LOGOP myop;
554		600
555	Zero (&myop, 1, LOGOP);	601	Zero (&myop, 1, LOGOP);
…		…
564	PL_op = (OP *)&myop;	610	PL_op = (OP *)&myop;
565	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	611	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
566	SPAGAIN;	612	SPAGAIN;
567	}	613	}
568		614
		615	/*
		616	* this is a _very_ stripped down perl interpreter ;)
		617	*/
569	static void	618	static void
570	coro_run (void *arg)	619	coro_run (void *arg)
571	{	620	{
		621	dTHX;
		622
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	623	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	624	UNLOCK;
574		625
575	/*
576	* this is a _very_ stripped down perl interpreter ;)
577	*/
578	PL_top_env = &PL_start_env;	626	PL_top_env = &PL_start_env;
579		627
580	/* inject call to cctx_init */	628	/* inject a fake subroutine call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	629	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		630
583	/* 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 */
584	PL_restartop = PL_op;	632	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	633	perl_run (PL_curinterp);
586		634
587	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	635	/*
588	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 */
589	}	644	}
590		645
591	static coro_cctx *	646	static coro_cctx *
592	cctx_new ()	647	cctx_new ()
593	{	648	{
594	coro_cctx *cctx;	649	coro_cctx *cctx;
		650	void *stack_start;
		651	size_t stack_size;
595		652
596	++cctx_count;	653	++cctx_count;
597		654
598	New (0, cctx, 1, coro_cctx);	655	Newz (0, cctx, 1, coro_cctx);
599		656
600	#if HAVE_MMAP	657	#if HAVE_MMAP
601		658
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	659	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	660	/* mmap supposedly does allocate-on-write for us */
604	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);
605		662
606	if (cctx->sptr == (void *)-1)	663	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	664	{
611
612	# if STACKGUARD	665	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	666	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# 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);
615		677
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	678	if (!cctx->sptr)
622	{	679	{
623	perror ("FATAL: unable to malloc stack for coroutine");	680	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	681	_exit (EXIT_FAILURE);
625	}	682	}
626		683
627	#endif	684	stack_start = cctx->sptr;
		685	stack_size = cctx->ssize;
		686	}
628		687
629	#if USE_VALGRIND	688	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
630	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
631	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
632	cctx->ssize + (char *)cctx->sptr
633	);
634	#endif
635
636	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);
637		690
638	return cctx;	691	return cctx;
639	}	692	}
640		693
641	static void	694	static void
…		…
644	if (!cctx)	697	if (!cctx)
645	return;	698	return;
646		699
647	--cctx_count;	700	--cctx_count;
648		701
649	#if USE_VALGRIND	702	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	703	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	704	#endif
652		705
653	#if HAVE_MMAP	706	#if HAVE_MMAP
		707	if (cctx->mapped)
654	munmap (cctx->sptr, cctx->ssize);	708	munmap (cctx->sptr, cctx->ssize);
655	#else	709	else
		710	#endif
656	Safefree (cctx->sptr);	711	Safefree (cctx->sptr);
657	#endif
658		712
659	Safefree (cctx);	713	Safefree (cctx);
660	}	714	}
661		715
662	static coro_cctx *	716	static coro_cctx *
663	cctx_get ()	717	cctx_get (pTHX)
664	{	718	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	719	while (cctx_first)
668	{	720	{
669	cctx = cctx_first;	721	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	722	cctx_first = cctx->next;
671	--cctx_idle;	723	--cctx_idle;
		724
		725	if (cctx->ssize >= coro_stacksize)
		726	return cctx;
		727
		728	cctx_destroy (cctx);
672	}	729	}
673	else	730
674	{
675	cctx = cctx_new ();
676	PL_op = PL_op->op_next;	731	PL_op = PL_op->op_next;
677	}
678
679	return cctx;	732	return cctx_new ();
680	}	733	}
681		734
682	static void	735	static void
683	cctx_put (coro_cctx *cctx)	736	cctx_put (coro_cctx *cctx)
684	{	737	{
…		…
696	++cctx_idle;	749	++cctx_idle;
697	cctx->next = cctx_first;	750	cctx->next = cctx_first;
698	cctx_first = cctx;	751	cctx_first = cctx;
699	}	752	}
700		753
		754	/ coroutine switching ***************************************************/
		755
701	/* never call directly, always through the coro_state_transfer global variable */	756	/* never call directly, always through the coro_state_transfer global variable */
702	static void NOINLINE	757	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	758	transfer (pTHX_ struct coro prev, struct coro next)
704	{	759	{
705	dSTACKLEVEL;	760	dSTACKLEVEL;
706		761
707	/* sometimes transfer is only called to set idle_sp */	762	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	763	if (!next)
		764	{
709	((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	}
710	else if (prev != next)	768	else if (prev != next)
711	{	769	{
712	coro_cctx *prev__cctx;	770	coro_cctx *prev__cctx;
713		771
714	if (prev->flags & CF_NEW)	772	if (prev->flags & CF_NEW)
…		…
725	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");
726		784
727	if (next->flags & CF_RUNNING)	785	if (next->flags & CF_RUNNING)
728	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");
729		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
730	prev->flags &= ~CF_RUNNING;	791	prev->flags &= ~CF_RUNNING;
731	next->flags \|= CF_RUNNING;	792	next->flags \|= CF_RUNNING;
732		793
733	LOCK;	794	LOCK;
734		795
735	if (next->flags & CF_NEW)	796	if (next->flags & CF_NEW)
736	{	797	{
737	/* need to start coroutine */	798	/* need to start coroutine */
738	next->flags &= ~CF_NEW;	799	next->flags &= ~CF_NEW;
739	/* first get rid of the old state */	800	/* first get rid of the old state */
740	save_perl (prev);	801	save_perl (aTHX_ prev);
741	/* setup coroutine call */	802	/* setup coroutine call */
742	setup_coro (next);	803	setup_coro (aTHX_ next);
743	/* need a new stack */	804	/* need a new stack */
744	assert (!next->stack);	805	assert (!next->cctx);
745	}	806	}
746	else	807	else
747	{	808	{
748	/* coroutine already started */	809	/* coroutine already started */
749	save_perl (prev);	810	save_perl (aTHX_ prev);
750	load_perl (next);	811	load_perl (aTHX_ next);
751	}	812	}
752		813
753	prev__cctx = prev->cctx;	814	prev__cctx = prev->cctx;
754		815
755	/* possibly "free" the cctx */	816	/* possibly "free" the cctx */
756	if (prev__cctx->idle_sp == STACKLEVEL)	817	if (prev__cctx->idle_sp == STACKLEVEL)
757	{	818	{
758	/* 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 */
759	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));
760		821
761	prev->cctx = 0;	822	prev->cctx = 0;
762		823
763	cctx_put (prev__cctx);	824	cctx_put (prev__cctx);
764	prev__cctx->inuse = 0;	825	prev__cctx->inuse = 0;
765	}	826	}
766		827
767	if (!next->cctx)	828	if (!next->cctx)
768	{	829	{
769	next->cctx = cctx_get ();	830	next->cctx = cctx_get (aTHX);
770	assert (!next->cctx->inuse);	831	assert (!next->cctx->inuse);
771	next->cctx->inuse = 1;	832	next->cctx->inuse = 1;
772	}	833	}
773		834
774	if (prev__cctx != next->cctx)	835	if (prev__cctx != next->cctx)
…		…
776	prev__cctx->top_env = PL_top_env;	837	prev__cctx->top_env = PL_top_env;
777	PL_top_env = next->cctx->top_env;	838	PL_top_env = next->cctx->top_env;
778	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	839	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
779	}	840	}
780		841
781	free_coro_mortal ();	842	free_coro_mortal (aTHX);
782
783	UNLOCK;	843	UNLOCK;
784	}	844	}
785	}	845	}
786		846
787	struct transfer_args	847	struct transfer_args
788	{	848	{
789	struct coro prev, next;	849	struct coro prev, next;
790	};	850	};
791		851
792	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	852	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
793		853
		854	/ high level stuff ******************************************************/
		855
794	static void	856	static int
795	coro_state_destroy (struct coro *coro)	857	coro_state_destroy (pTHX_ struct coro *coro)
796	{	858	{
797	if (coro->refcnt--)	859	if (coro->flags & CF_DESTROYED)
798	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 */
799		874
800	if (coro->mainstack && coro->mainstack != main_mainstack)	875	if (coro->mainstack && coro->mainstack != main_mainstack)
801	{	876	{
802	struct coro temp;	877	struct coro temp;
		878
		879	assert (!(coro->flags & CF_RUNNING));
		880
803	Zero (&temp, 1, struct coro);	881	Zero (&temp, 1, struct coro);
804	temp.save = CORO_SAVE_ALL;	882	temp.save = CORO_SAVE_DEF;
805		883
806	if (coro->flags & CF_RUNNING)	884	if (coro->flags & CF_RUNNING)
807	croak ("FATAL: tried to destroy currently running coroutine");	885	croak ("FATAL: tried to destroy currently running coroutine");
808		886
809	save_perl (&temp);	887	save_perl (aTHX_ &temp);
810	load_perl (coro);	888	load_perl (aTHX_ coro);
811		889
812	coro_destroy_stacks ();	890	coro_destroy_stacks (aTHX);
813		891
814	load_perl (&temp); /* this will get rid of defsv etc.. */	892	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
815		893
816	coro->mainstack = 0;	894	coro->mainstack = 0;
817	}	895	}
818		896
819	cctx_destroy (coro->cctx);	897	cctx_destroy (coro->cctx);
820	SvREFCNT_dec (coro->args);	898	SvREFCNT_dec (coro->args);
821	Safefree (coro);	899
		900	return 1;
822	}	901	}
823		902
824	static int	903	static int
825	coro_state_clear (pTHX_ SV sv, MAGIC mg)	904	coro_state_free (pTHX_ SV sv, MAGIC mg)
826	{	905	{
827	struct coro coro = (struct coro )mg->mg_ptr;	906	struct coro coro = (struct coro )mg->mg_ptr;
828	mg->mg_ptr = 0;	907	mg->mg_ptr = 0;
829		908
		909	if (--coro->refcnt < 0)
		910	{
830	coro_state_destroy (coro);	911	coro_state_destroy (aTHX_ coro);
		912	Safefree (coro);
		913	}
831		914
832	return 0;	915	return 0;
833	}	916	}
834		917
835	static int	918	static int
…		…
842	return 0;	925	return 0;
843	}	926	}
844		927
845	static MGVTBL coro_state_vtbl = {	928	static MGVTBL coro_state_vtbl = {
846	0, 0, 0, 0,	929	0, 0, 0, 0,
847	coro_state_clear,	930	coro_state_free,
848	0,	931	0,
849	#ifdef MGf_DUP	932	#ifdef MGf_DUP
850	coro_state_dup,	933	coro_state_dup,
851	#else	934	#else
852	# define MGf_DUP 0	935	# define MGf_DUP 0
853	#endif	936	#endif
854	};	937	};
855		938
856	static struct coro *	939	static struct coro *
857	SvSTATE (SV *coro)	940	SvSTATE_ (pTHX_ SV *coro)
858	{	941	{
859	HV *stash;	942	HV *stash;
860	MAGIC *mg;	943	MAGIC *mg;
861		944
862	if (SvROK (coro))	945	if (SvROK (coro))
…		…
868	/* very slow, but rare, check */	951	/* very slow, but rare, check */
869	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	952	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
870	croak ("Coro::State object required");	953	croak ("Coro::State object required");
871	}	954	}
872		955
873	mg = SvMAGIC (coro);	956	mg = CORO_MAGIC (coro);
874	assert (mg->mg_type == PERL_MAGIC_ext);
875	return (struct coro *)mg->mg_ptr;	957	return (struct coro *)mg->mg_ptr;
876	}	958	}
877		959
		960	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		961
878	static void	962	static void
879	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	963	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
880	{	964	{
881	ta->prev = SvSTATE (prev_sv);	965	ta->prev = SvSTATE (prev_sv);
882	ta->next = SvSTATE (next_sv);	966	ta->next = SvSTATE (next_sv);
883	}	967	}
884		968
885	static void	969	static void
886	api_transfer (SV prev_sv, SV next_sv)	970	api_transfer (SV prev_sv, SV next_sv)
887	{	971	{
		972	dTHX;
888	struct transfer_args ta;	973	struct transfer_args ta;
889		974
890	prepare_transfer (&ta, prev_sv, next_sv);	975	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
891	TRANSFER (ta);	976	TRANSFER (ta);
892	}	977	}
893		978
894	static int	979	static int
895	api_save (SV *coro_sv, int new_save)	980	api_save (SV *coro_sv, int new_save)
896	{	981	{
		982	dTHX;
897	struct coro *coro = SvSTATE (coro_sv);	983	struct coro *coro = SvSTATE (coro_sv);
898	int old_save = coro->save;	984	int old_save = coro->save;
899		985
900	if (new_save >= 0)	986	if (new_save >= 0)
901	coro->save = new_save;	987	coro->save = new_save;
…		…
903	return old_save;	989	return old_save;
904	}	990	}
905		991
906	/ Coro ******************************************************************/	992	/ Coro ******************************************************************/
907		993
908	#define PRIO_MAX 3
909	#define PRIO_HIGH 1
910	#define PRIO_NORMAL 0
911	#define PRIO_LOW -1
912	#define PRIO_IDLE -3
913	#define PRIO_MIN -4
914
915	/* for Coro.pm */
916	static SV *coro_current;
917	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
918	static int coro_nready;
919
920	static void	994	static void
921	coro_enq (SV *coro_sv)	995	coro_enq (pTHX_ SV *coro_sv)
922	{	996	{
923	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);
924	coro_nready++;
925	}	998	}
926		999
927	static SV *	1000	static SV *
928	coro_deq (int min_prio)	1001	coro_deq (pTHX_ int min_prio)
929	{	1002	{
930	int prio = PRIO_MAX - PRIO_MIN;	1003	int prio = PRIO_MAX - PRIO_MIN;
931		1004
932	min_prio -= PRIO_MIN;	1005	min_prio -= PRIO_MIN;
933	if (min_prio < 0)	1006	if (min_prio < 0)
934	min_prio = 0;	1007	min_prio = 0;
935		1008
936	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1009	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
937	if (AvFILLp (coro_ready [prio]) >= 0)	1010	if (AvFILLp (coro_ready [prio]) >= 0)
938	{
939	coro_nready--;
940	return av_shift (coro_ready [prio]);	1011	return av_shift (coro_ready [prio]);
941	}
942		1012
943	return 0;	1013	return 0;
944	}	1014	}
945		1015
946	static int	1016	static int
947	api_ready (SV *coro_sv)	1017	api_ready (SV *coro_sv)
948	{	1018	{
		1019	dTHX;
949	struct coro *coro;	1020	struct coro *coro;
950		1021
951	if (SvROK (coro_sv))	1022	if (SvROK (coro_sv))
952	coro_sv = SvRV (coro_sv);	1023	coro_sv = SvRV (coro_sv);
953		1024
954	coro = SvSTATE (coro_sv);	1025	coro = SvSTATE (coro_sv);
955		1026
956	if (coro->flags & CF_READY)	1027	if (coro->flags & CF_READY)
957	return 0;	1028	return 0;
958		1029
959	#if 0 /* this is actually harmless */
960	if (coro->flags & CF_RUNNING)
961	croak ("Coro::ready called on currently running coroutine");
962	#endif
963
964	coro->flags \|= CF_READY;	1030	coro->flags \|= CF_READY;
965		1031
966	LOCK;	1032	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1033	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1034	++coro_nready;
968	UNLOCK;	1035	UNLOCK;
969		1036
970	return 1;	1037	return 1;
971	}	1038	}
972		1039
973	static int	1040	static int
974	api_is_ready (SV *coro_sv)	1041	api_is_ready (SV *coro_sv)
975	{	1042	{
		1043	dTHX;
976	return !!SvSTATE (coro_sv)->flags & CF_READY;	1044	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1045	}
978		1046
979	static void	1047	static void
980	prepare_schedule (struct transfer_args *ta)	1048	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1049	{
982	SV prev, next;	1050	SV prev_sv, next_sv;
983		1051
984	for (;;)	1052	for (;;)
985	{	1053	{
986	LOCK;	1054	LOCK;
987	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;
988	UNLOCK;	1087	UNLOCK;
989
990	if (next)
991	break;	1088	break;
992
993	{
994	dSP;
995
996	ENTER;
997	SAVETMPS;
998
999	PUSHMARK (SP);
1000	PUTBACK;
1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002
1003	FREETMPS;
1004	LEAVE;
1005	}	1089	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1090
1011	/* free this only after the transfer */	1091	/* free this only after the transfer */
1012	LOCK;	1092	prev_sv = SvRV (coro_current);
1013	free_coro_mortal ();	1093	SvRV_set (coro_current, next_sv);
1014	UNLOCK;
1015	coro_mortal = prev;
1016
1017	assert (!SvROK(prev));//D
1018	assert (!SvROK(next));//D
1019
1020	ta->prev = SvSTATE (prev);	1094	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);
1022		1095
1023	assert (ta->next->flags & CF_READY);	1096	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;	1097	ta->next->flags &= ~CF_READY;
1025	}
1026		1098
		1099	LOCK;
		1100	free_coro_mortal (aTHX);
		1101	coro_mortal = prev_sv;
		1102	UNLOCK;
		1103	}
		1104
1027	static void	1105	static void
1028	prepare_cede (struct transfer_args *ta)	1106	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1107	{
1030	api_ready (coro_current);	1108	api_ready (coro_current);
1031
1032	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;
1033	}	1124	}
1034		1125
1035	static void	1126	static void
1036	api_schedule (void)	1127	api_schedule (void)
1037	{	1128	{
		1129	dTHX;
1038	struct transfer_args ta;	1130	struct transfer_args ta;
1039		1131
1040	prepare_schedule (&ta);	1132	prepare_schedule (aTHX_ &ta);
1041	TRANSFER (ta);	1133	TRANSFER (ta);
1042	}	1134	}
1043		1135
1044	static void	1136	static int
1045	api_cede (void)	1137	api_cede (void)
1046	{	1138	{
		1139	dTHX;
1047	struct transfer_args ta;	1140	struct transfer_args ta;
1048		1141
1049	prepare_cede (&ta);	1142	prepare_cede (aTHX_ &ta);
		1143
		1144	if (ta.prev != ta.next)
		1145	{
1050	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;
1051	}	1166	}
1052		1167
1053	MODULE = Coro::State PACKAGE = Coro::State	1168	MODULE = Coro::State PACKAGE = Coro::State
1054		1169
1055	PROTOTYPES: DISABLE	1170	PROTOTYPES: DISABLE
…		…
1065		1180
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1181	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1067	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1182	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1183	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1069	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	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));
1070	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1187	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1071		1188
1072	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;
1073		1194
1074	coroapi.ver = CORO_API_VERSION;	1195	coroapi.ver = CORO_API_VERSION;
1075	coroapi.transfer = api_transfer;	1196	coroapi.transfer = api_transfer;
1076		1197
1077	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1198	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1085	HV *hv;	1206	HV *hv;
1086	int i;	1207	int i;
1087		1208
1088	Newz (0, coro, 1, struct coro);	1209	Newz (0, coro, 1, struct coro);
1089	coro->args = newAV ();	1210	coro->args = newAV ();
1090	coro->save = CORO_SAVE_ALL;	1211	coro->save = CORO_SAVE_DEF;
1091	coro->flags = CF_NEW;	1212	coro->flags = CF_NEW;
1092		1213
1093	hv = newHV ();	1214	hv = newHV ();
1094	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;
1095	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1216	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1105	CODE:	1226	CODE:
1106	RETVAL = api_save (coro, new_save);	1227	RETVAL = api_save (coro, new_save);
1107	OUTPUT:	1228	OUTPUT:
1108	RETVAL	1229	RETVAL
1109		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:
		1240	RETVAL
		1241
1110	void	1242	void
1111	_set_stacklevel (...)	1243	_set_stacklevel (...)
1112	ALIAS:	1244	ALIAS:
1113	Coro::State::transfer = 1	1245	Coro::State::transfer = 1
1114	Coro::schedule = 2	1246	Coro::schedule = 2
1115	Coro::cede = 3	1247	Coro::cede = 3
		1248	Coro::cede_notself = 4
1116	CODE:	1249	CODE:
1117	{	1250	{
1118	struct transfer_args ta;	1251	struct transfer_args ta;
1119		1252
1120	switch (ix)	1253	switch (ix)
…		…
1126		1259
1127	case 1:	1260	case 1:
1128	if (items != 2)	1261	if (items != 2)
1129	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1262	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1130		1263
1131	prepare_transfer (&ta, ST (0), ST (1));	1264	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1132	break;	1265	break;
1133		1266
1134	case 2:	1267	case 2:
1135	prepare_schedule (&ta);	1268	prepare_schedule (aTHX_ &ta);
1136	break;	1269	break;
1137		1270
1138	case 3:	1271	case 3:
1139	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
1140	break;	1279	break;
1141	}	1280	}
1142		1281
		1282	BARRIER;
1143	TRANSFER (ta);	1283	TRANSFER (ta);
1144	}
1145		1284
1146	void	1285	if (GIMME_V != G_VOID && ta.next != ta.prev)
1147	_clone_state_from (SV dst, SV src)	1286	XSRETURN_YES;
		1287	}
		1288
		1289	bool
		1290	_destroy (SV *coro_sv)
1148	CODE:	1291	CODE:
1149	{	1292	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1150	struct coro *coro_src = SvSTATE (src);	1293	OUTPUT:
1151		1294	RETVAL
1152	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1153
1154	++coro_src->refcnt;
1155	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1156	}
1157		1295
1158	void	1296	void
1159	_exit (code)	1297	_exit (code)
1160	int code	1298	int code
1161	PROTOTYPE: $	1299	PROTOTYPE: $
1162	CODE:	1300	CODE:
1163	_exit (code);	1301	_exit (code);
1164		1302
1165	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
1166	cctx_count ()	1313	cctx_count ()
1167	CODE:	1314	CODE:
1168	RETVAL = cctx_count;	1315	RETVAL = cctx_count;
1169	OUTPUT:	1316	OUTPUT:
1170	RETVAL	1317	RETVAL
…		…
1198	coro_ready[i] = newAV ();	1345	coro_ready[i] = newAV ();
1199		1346
1200	{	1347	{
1201	SV *sv = perl_get_sv("Coro::API", 1);	1348	SV *sv = perl_get_sv("Coro::API", 1);
1202		1349
1203	coroapi.schedule = api_schedule;	1350	coroapi.schedule = api_schedule;
1204	coroapi.save = api_save;	1351	coroapi.save = api_save;
1205	coroapi.cede = api_cede;	1352	coroapi.cede = api_cede;
		1353	coroapi.cede_notself = api_cede_notself;
1206	coroapi.ready = api_ready;	1354	coroapi.ready = api_ready;
1207	coroapi.is_ready = api_is_ready;	1355	coroapi.is_ready = api_is_ready;
1208	coroapi.nready = &coro_nready;	1356	coroapi.nready = &coro_nready;
1209	coroapi.current = coro_current;	1357	coroapi.current = coro_current;
1210		1358
1211	GCoroAPI = &coroapi;	1359	GCoroAPI = &coroapi;
1212	sv_setiv (sv, (IV)&coroapi);	1360	sv_setiv (sv, (IV)&coroapi);
1213	SvREADONLY_on (sv);	1361	SvREADONLY_on (sv);
1214	}	1362	}
…		…
1230	RETVAL = coro->prio;	1378	RETVAL = coro->prio;
1231		1379
1232	if (items > 1)	1380	if (items > 1)
1233	{	1381	{
1234	if (ix)	1382	if (ix)
1235	newprio += coro->prio;	1383	newprio = coro->prio - newprio;
1236		1384
1237	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1385	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1238	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1386	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1239		1387
1240	coro->prio = newprio;	1388	coro->prio = newprio;
1241	}	1389	}
1242	}	1390	}
		1391	OUTPUT:
		1392	RETVAL
1243		1393
1244	SV *	1394	SV *
1245	ready (SV *self)	1395	ready (SV *self)
1246	PROTOTYPE: $	1396	PROTOTYPE: $
1247	CODE:	1397	CODE:

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC vs. Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC vs.
Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC