[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 1.147 by root, Mon Mar 19 15:50:48 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 */
114	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
115	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
116		136
…		…
121	typedef struct coro_cctx {	141	typedef struct coro_cctx {
122	struct coro_cctx *next;	142	struct coro_cctx *next;
123		143
124	/* the stack */	144	/* the stack */
125	void *sptr;	145	void *sptr;
126	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
127		147
128	/* cpu state */	148	/* cpu state */
129	void idle_sp; / sp of top-level transfer/schedule/cede call */	149	void idle_sp; / sp of top-level transfer/schedule/cede call */
		150	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
130	JMPENV *top_env;	151	JMPENV *top_env;
131	coro_context cctx;	152	coro_context cctx;
132		153
133	int inuse;
134
135	#if USE_VALGRIND	154	#if CORO_USE_VALGRIND
136	int valgrind_id;	155	int valgrind_id;
137	#endif	156	#endif
		157	char inuse, mapped;
138	} coro_cctx;	158	} coro_cctx;
139		159
140	enum {	160	enum {
141	CF_RUNNING = 0x0001, /* coroutine is running */	161	CF_RUNNING = 0x0001, /* coroutine is running */
142	CF_READY = 0x0002, /* coroutine is ready */	162	CF_READY = 0x0002, /* coroutine is ready */
143	CF_NEW = 0x0004, /* ahs never been switched to */	163	CF_NEW = 0x0004, /* has never been switched to */
		164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
144	};	165	};
145		166
146	/* this is a structure representing a perl-level coroutine */	167	/* this is a structure representing a perl-level coroutine */
147	struct coro {	168	struct coro {
148	/* the c coroutine allocated to this perl coroutine, if any */	169	/* the c coroutine allocated to this perl coroutine, if any */
…		…
156		177
157	/* optionally saved, might be zero */	178	/* optionally saved, might be zero */
158	AV defav; / @_ */	179	AV defav; / @_ */
159	SV defsv; / $_ */	180	SV defsv; / $_ */
160	SV errsv; / $@ */	181	SV errsv; / $@ */
		182	GV deffh; / default filehandle */
161	SV irssv; / $/ */	183	SV irssv; / $/ */
162	SV irssv_sv; / real $/ cache */	184	SV irssv_sv; / real $/ cache */
163		185
164	#define VAR(name,type) type name;	186	#define VAR(name,type) type name;
165	# include "state.h"	187	# include "state.h"
…		…
170	};	192	};
171		193
172	typedef struct coro *Coro__State;	194	typedef struct coro *Coro__State;
173	typedef struct coro *Coro__State_or_hashref;	195	typedef struct coro *Coro__State_or_hashref;
174		196
		197	/ Coro ******************************************************************/
		198
		199	#define PRIO_MAX 3
		200	#define PRIO_HIGH 1
		201	#define PRIO_NORMAL 0
		202	#define PRIO_LOW -1
		203	#define PRIO_IDLE -3
		204	#define PRIO_MIN -4
		205
		206	/* for Coro.pm */
		207	static SV *coro_current;
		208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		209	static int coro_nready;
		210
		211	/ lowlevel stuff ********************************************************/
		212
175	static AV *	213	static AV *
176	coro_clone_padlist (CV *cv)	214	coro_clone_padlist (pTHX_ CV *cv)
177	{	215	{
178	AV *padlist = CvPADLIST (cv);	216	AV *padlist = CvPADLIST (cv);
179	AV newpadlist, newpad;	217	AV newpadlist, newpad;
180		218
181	newpadlist = newAV ();	219	newpadlist = newAV ();
…		…
193		231
194	return newpadlist;	232	return newpadlist;
195	}	233	}
196		234
197	static void	235	static void
198	free_padlist (AV *padlist)	236	free_padlist (pTHX_ AV *padlist)
199	{	237	{
200	/* may be during global destruction */	238	/* may be during global destruction */
201	if (SvREFCNT (padlist))	239	if (SvREFCNT (padlist))
202	{	240	{
203	I32 i = AvFILLp (padlist);	241	I32 i = AvFILLp (padlist);
…		…
224	AV *padlist;	262	AV *padlist;
225	AV av = (AV )mg->mg_obj;	263	AV av = (AV )mg->mg_obj;
226		264
227	/* casting is fun. */	265	/* casting is fun. */
228	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	266	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
229	free_padlist (padlist);	267	free_padlist (aTHX_ padlist);
230		268
231	SvREFCNT_dec (av);	269	SvREFCNT_dec (av);
232		270
233	return 0;	271	return 0;
234	}	272	}
…		…
244	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
245	: 0	283	: 0
246		284
247	/* the next two functions merely cache the padlists */	285	/* the next two functions merely cache the padlists */
248	static void	286	static void
249	get_padlist (CV *cv)	287	get_padlist (pTHX_ CV *cv)
250	{	288	{
251	MAGIC *mg = CORO_MAGIC (cv);	289	MAGIC *mg = CORO_MAGIC (cv);
252	AV *av;	290	AV *av;
253		291
254	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
255	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
256	else	294	else
257	{	295	{
258	#if 0	296	#if CORO_PREFER_PERL_FUNCTIONS
259	/* this is probably cleaner, but also slower? */	297	/* this is probably cleaner, but also slower? */
260	CV *cp = Perl_cv_clone (cv);	298	CV *cp = Perl_cv_clone (cv);
261	CvPADLIST (cv) = CvPADLIST (cp);	299	CvPADLIST (cv) = CvPADLIST (cp);
262	CvPADLIST (cp) = 0;	300	CvPADLIST (cp) = 0;
263	SvREFCNT_dec (cp);	301	SvREFCNT_dec (cp);
264	#else	302	#else
265	CvPADLIST (cv) = coro_clone_padlist (cv);	303	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
266	#endif	304	#endif
267	}	305	}
268	}	306	}
269		307
270	static void	308	static void
271	put_padlist (CV *cv)	309	put_padlist (pTHX_ CV *cv)
272	{	310	{
273	MAGIC *mg = CORO_MAGIC (cv);	311	MAGIC *mg = CORO_MAGIC (cv);
274	AV *av;	312	AV *av;
275		313
276	if (!mg)	314	if (!mg)
…		…
287	av_extend (av, AvMAX (av) + 1);	325	av_extend (av, AvMAX (av) + 1);
288		326
289	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
290	}	328	}
291		329
		330	/ load & save, init *****************************************************/
		331
292	#define SB do {	332	#define SB do {
293	#define SE } while (0)	333	#define SE } while (0)
294		334
295	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
296		336
297	static void	337	static void
298	load_perl (Coro__State c)	338	load_perl (pTHX_ Coro__State c)
299	{	339	{
300	#define VAR(name,type) PL_ ## name = c->name;	340	#define VAR(name,type) PL_ ## name = c->name;
301	# include "state.h"	341	# include "state.h"
302	#undef VAR	342	#undef VAR
303		343
304	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
305	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
306	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		348
307	if (c->irssv)	349	if (c->irssv)
308	{	350	{
309	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	351	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		352	{
310	SvREFCNT_dec (c->irssv);	353	SvREFCNT_dec (c->irssv);
		354	c->irssv = 0;
		355	}
311	else	356	else
312	{	357	{
313	REPLACE_SV (PL_rs, c->irssv);	358	REPLACE_SV (PL_rs, c->irssv);
314	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
315	sv_setsv (c->irssv_sv, PL_rs);	360	sv_setsv (c->irssv_sv, PL_rs);
…		…
321	CV *cv;	366	CV *cv;
322		367
323	/* now do the ugly restore mess */	368	/* now do the ugly restore mess */
324	while ((cv = (CV *)POPs))	369	while ((cv = (CV *)POPs))
325	{	370	{
326	put_padlist (cv); /* mark this padlist as available */	371	put_padlist (aTHX_ cv); /* mark this padlist as available */
327	CvDEPTH (cv) = PTR2IV (POPs);	372	CvDEPTH (cv) = PTR2IV (POPs);
328	CvPADLIST (cv) = (AV *)POPs;	373	CvPADLIST (cv) = (AV *)POPs;
329	}	374	}
330		375
331	PUTBACK;	376	PUTBACK;
332	}	377	}
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
333	}	379	}
334		380
335	static void	381	static void
336	save_perl (Coro__State c)	382	save_perl (pTHX_ Coro__State c)
337	{	383	{
		384	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
338	{	385	{
339	dSP;	386	dSP;
340	I32 cxix = cxstack_ix;	387	I32 cxix = cxstack_ix;
341	PERL_CONTEXT *ccstk = cxstack;	388	PERL_CONTEXT *ccstk = cxstack;
342	PERL_SI *top_si = PL_curstackinfo;	389	PERL_SI *top_si = PL_curstackinfo;
…		…
344	/*	391	/*
345	* the worst thing you can imagine happens first - we have to save	392	* the worst thing you can imagine happens first - we have to save
346	* (and reinitialize) all cv's in the whole callchain :(	393	* (and reinitialize) all cv's in the whole callchain :(
347	*/	394	*/
348		395
		396	EXTEND (SP, 3 + 1);
349	PUSHs (Nullsv);	397	PUSHs (Nullsv);
350	/* this loop was inspired by pp_caller */	398	/* this loop was inspired by pp_caller */
351	for (;;)	399	for (;;)
352	{	400	{
353	while (cxix >= 0)	401	while (cxix >= 0)
…		…
359	CV *cv = cx->blk_sub.cv;	407	CV *cv = cx->blk_sub.cv;
360		408
361	if (CvDEPTH (cv))	409	if (CvDEPTH (cv))
362	{	410	{
363	EXTEND (SP, 3);	411	EXTEND (SP, 3);
364
365	PUSHs ((SV *)CvPADLIST (cv));	412	PUSHs ((SV *)CvPADLIST (cv));
366	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
367	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
368		415
369	CvDEPTH (cv) = 0;	416	CvDEPTH (cv) = 0;
370	get_padlist (cv);	417	get_padlist (aTHX_ cv);
371	}	418	}
372	}	419	}
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	}	420	}
382		421
383	if (top_si->si_type == PERLSI_MAIN)	422	if (top_si->si_type == PERLSI_MAIN)
384	break;	423	break;
385		424
…		…
392	}	431	}
393		432
394	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	433	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;	434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
396	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		436	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;	437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
398		438
399	#define VAR(name,type)c->name = PL_ ## name;	439	#define VAR(name,type)c->name = PL_ ## name;
400	# include "state.h"	440	# include "state.h"
401	#undef VAR	441	#undef VAR
…		…
405	* allocate various perl stacks. This is an exact copy	445	* allocate various perl stacks. This is an exact copy
406	* of perl.c:init_stacks, except that it uses less memory	446	* of perl.c:init_stacks, except that it uses less memory
407	* on the (sometimes correct) assumption that coroutines do	447	* on the (sometimes correct) assumption that coroutines do
408	* not usually need a lot of stackspace.	448	* not usually need a lot of stackspace.
409	*/	449	*/
		450	#if CORO_PREFER_PERL_FUNCTIONS
		451	# define coro_init_stacks init_stacks
		452	#else
410	static void	453	static void
411	coro_init_stacks ()	454	coro_init_stacks (pTHX)
412	{	455	{
413	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
414	PL_curstackinfo->si_type = PERLSI_MAIN;	457	PL_curstackinfo->si_type = PERLSI_MAIN;
415	PL_curstack = PL_curstackinfo->si_stack;	458	PL_curstack = PL_curstackinfo->si_stack;
416	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
444	New(54,PL_retstack,16,OP*);	487	New(54,PL_retstack,16,OP*);
445	PL_retstack_ix = 0;	488	PL_retstack_ix = 0;
446	PL_retstack_max = 16;	489	PL_retstack_max = 16;
447	#endif	490	#endif
448	}	491	}
		492	#endif
449		493
450	/*	494	/*
451	* destroy the stacks, the callchain etc...	495	* destroy the stacks, the callchain etc...
452	*/	496	*/
453	static void	497	static void
454	coro_destroy_stacks ()	498	coro_destroy_stacks (pTHX)
455	{	499	{
456	if (!IN_DESTRUCT)	500	if (!IN_DESTRUCT)
457	{	501	{
458	/* is this ugly, I ask? */	502	/* restore all saved variables and stuff */
459	LEAVE_SCOPE (0);	503	LEAVE_SCOPE (0);
		504	assert (PL_tmps_floor == -1);
460		505
461	/* sure it is, but more important: is it correct?? :/ */	506	/* free all temporaries */
462	FREETMPS;	507	FREETMPS;
		508	assert (PL_tmps_ix == -1);
463		509
		510	/* unwind all extra stacks */
464	/POPSTACK_TO (PL_mainstack);//D//use/	511	POPSTACK_TO (PL_mainstack);
		512
		513	/* unwind main stack */
		514	dounwind (-1);
465	}	515	}
466		516
467	while (PL_curstackinfo->si_next)	517	while (PL_curstackinfo->si_next)
468	PL_curstackinfo = PL_curstackinfo->si_next;	518	PL_curstackinfo = PL_curstackinfo->si_next;
469		519
470	while (PL_curstackinfo)	520	while (PL_curstackinfo)
471	{	521	{
472	PERL_SI *p = PL_curstackinfo->si_prev;	522	PERL_SI *p = PL_curstackinfo->si_prev;
473		523
474	{ /D//remove/
475	dSP;
476	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
477	PUTBACK; /* possibly superfluous */
478	}
479
480	if (!IN_DESTRUCT)	524	if (!IN_DESTRUCT)
481	{
482	dounwind (-1);/D//remove/
483	SvREFCNT_dec (PL_curstackinfo->si_stack);	525	SvREFCNT_dec (PL_curstackinfo->si_stack);
484	}
485		526
486	Safefree (PL_curstackinfo->si_cxstack);	527	Safefree (PL_curstackinfo->si_cxstack);
487	Safefree (PL_curstackinfo);	528	Safefree (PL_curstackinfo);
488	PL_curstackinfo = p;	529	PL_curstackinfo = p;
489	}	530	}
…		…
495	#if !PERL_VERSION_ATLEAST (5,9,0)	536	#if !PERL_VERSION_ATLEAST (5,9,0)
496	Safefree (PL_retstack);	537	Safefree (PL_retstack);
497	#endif	538	#endif
498	}	539	}
499		540
		541	/ coroutine stack handling **********************************************/
		542
500	static void	543	static void
501	setup_coro (struct coro *coro)	544	setup_coro (pTHX_ struct coro *coro)
502	{	545	{
503	/*	546	/*
504	* emulate part of the perl startup here.	547	* emulate part of the perl startup here.
505	*/	548	*/
506
507	coro_init_stacks ();	549	coro_init_stacks (aTHX);
508		550
509	PL_curcop = &PL_compiling;	551	PL_curcop = &PL_compiling;
510	PL_in_eval = EVAL_NULL;	552	PL_in_eval = EVAL_NULL;
		553	PL_comppad = 0;
511	PL_curpm = 0;	554	PL_curpm = 0;
512	PL_localizing = 0;	555	PL_localizing = 0;
513	PL_dirty = 0;	556	PL_dirty = 0;
514	PL_restartop = 0;	557	PL_restartop = 0;
515		558
…		…
534		577
535	ENTER; /* necessary e.g. for dounwind */	578	ENTER; /* necessary e.g. for dounwind */
536	}	579	}
537		580
538	static void	581	static void
539	free_coro_mortal ()	582	free_coro_mortal (pTHX)
540	{	583	{
541	if (coro_mortal)	584	if (coro_mortal)
542	{	585	{
543	SvREFCNT_dec (coro_mortal);	586	SvREFCNT_dec (coro_mortal);
544	coro_mortal = 0;	587	coro_mortal = 0;
545	}	588	}
546	}	589	}
547		590
548	/* inject a fake call to Coro::State::_cctx_init into the execution */	591	/* inject a fake call to Coro::State::_cctx_init into the execution */
549	static void NOINLINE	592	static void NOINLINE
550	prepare_cctx (coro_cctx *cctx)	593	prepare_cctx (pTHX_ coro_cctx *cctx)
551	{	594	{
552	dSP;	595	dSP;
553	LOGOP myop;	596	LOGOP myop;
554		597
555	Zero (&myop, 1, LOGOP);	598	Zero (&myop, 1, LOGOP);
…		…
567	}	610	}
568		611
569	static void	612	static void
570	coro_run (void *arg)	613	coro_run (void *arg)
571	{	614	{
		615	dTHX;
		616
572	/* coro_run is the alternative tail of transfer(), so unlock here. */	617	/* coro_run is the alternative tail of transfer(), so unlock here. */
573	UNLOCK;	618	UNLOCK;
574		619
575	/*	620	/*
576	* this is a _very_ stripped down perl interpreter ;)	621	* this is a _very_ stripped down perl interpreter ;)
577	*/	622	*/
578	PL_top_env = &PL_start_env;	623	PL_top_env = &PL_start_env;
579		624
580	/* inject call to cctx_init */	625	/* inject call to cctx_init */
581	prepare_cctx ((coro_cctx *)arg);	626	prepare_cctx (aTHX_ (coro_cctx *)arg);
582		627
583	/* somebody will hit me for both perl_run and PL_restartop */	628	/* somebody will hit me for both perl_run and PL_restartop */
584	PL_restartop = PL_op;	629	PL_restartop = PL_op;
585	perl_run (PL_curinterp);	630	perl_run (PL_curinterp);
586		631
…		…
590		635
591	static coro_cctx *	636	static coro_cctx *
592	cctx_new ()	637	cctx_new ()
593	{	638	{
594	coro_cctx *cctx;	639	coro_cctx *cctx;
		640	void *stack_start;
		641	size_t stack_size;
595		642
596	++cctx_count;	643	++cctx_count;
597		644
598	New (0, cctx, 1, coro_cctx);	645	Newz (0, cctx, 1, coro_cctx);
599		646
600	#if HAVE_MMAP	647	#if HAVE_MMAP
601		648
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	650	/* 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);	651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605		652
606	if (cctx->sptr == (void *)-1)	653	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	654	{
611
612	# if STACKGUARD	655	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	657	# endif
		658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		660	cctx->mapped = 1;
		661	}
		662	else
		663	#endif
		664	{
		665	cctx->ssize = coro_stacksize * (long)sizeof (long);
		666	New (0, cctx->sptr, coro_stacksize, long);
615		667
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	668	if (!cctx->sptr)
622	{	669	{
623	perror ("FATAL: unable to malloc stack for coroutine");	670	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	671	_exit (EXIT_FAILURE);
625	}	672	}
626		673
627	#endif	674	stack_start = cctx->sptr;
		675	stack_size = cctx->ssize;
		676	}
628		677
629	#if USE_VALGRIND	678	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);	679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		680
638	return cctx;	681	return cctx;
639	}	682	}
640		683
641	static void	684	static void
…		…
644	if (!cctx)	687	if (!cctx)
645	return;	688	return;
646		689
647	--cctx_count;	690	--cctx_count;
648		691
649	#if USE_VALGRIND	692	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	694	#endif
652		695
653	#if HAVE_MMAP	696	#if HAVE_MMAP
		697	if (cctx->mapped)
654	munmap (cctx->sptr, cctx->ssize);	698	munmap (cctx->sptr, cctx->ssize);
655	#else	699	else
		700	#endif
656	Safefree (cctx->sptr);	701	Safefree (cctx->sptr);
657	#endif
658		702
659	Safefree (cctx);	703	Safefree (cctx);
660	}	704	}
661		705
662	static coro_cctx *	706	static coro_cctx *
663	cctx_get ()	707	cctx_get (pTHX)
664	{	708	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	709	while (cctx_first)
668	{	710	{
669	cctx = cctx_first;	711	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	712	cctx_first = cctx->next;
671	--cctx_idle;	713	--cctx_idle;
		714
		715	if (cctx->ssize >= coro_stacksize)
		716	return cctx;
		717
		718	cctx_destroy (cctx);
672	}	719	}
673	else	720
674	{
675	cctx = cctx_new ();
676	PL_op = PL_op->op_next;	721	PL_op = PL_op->op_next;
677	}
678
679	return cctx;	722	return cctx_new ();
680	}	723	}
681		724
682	static void	725	static void
683	cctx_put (coro_cctx *cctx)	726	cctx_put (coro_cctx *cctx)
684	{	727	{
…		…
696	++cctx_idle;	739	++cctx_idle;
697	cctx->next = cctx_first;	740	cctx->next = cctx_first;
698	cctx_first = cctx;	741	cctx_first = cctx;
699	}	742	}
700		743
		744	/ coroutine switching ***************************************************/
		745
701	/* never call directly, always through the coro_state_transfer global variable */	746	/* never call directly, always through the coro_state_transfer global variable */
702	static void NOINLINE	747	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	748	transfer (pTHX_ struct coro prev, struct coro next)
704	{	749	{
705	dSTACKLEVEL;	750	dSTACKLEVEL;
706		751
707	/* sometimes transfer is only called to set idle_sp */	752	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	753	if (!next)
		754	{
709	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		756	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		757	}
710	else if (prev != next)	758	else if (prev != next)
711	{	759	{
712	coro_cctx *prev__cctx;	760	coro_cctx *prev__cctx;
713		761
714	if (prev->flags & CF_NEW)	762	if (prev->flags & CF_NEW)
…		…
725	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
726		774
727	if (next->flags & CF_RUNNING)	775	if (next->flags & CF_RUNNING)
728	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
729		777
		778	if (next->flags & CF_DESTROYED)
		779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		780
730	prev->flags &= ~CF_RUNNING;	781	prev->flags &= ~CF_RUNNING;
731	next->flags \|= CF_RUNNING;	782	next->flags \|= CF_RUNNING;
732		783
733	LOCK;	784	LOCK;
734		785
735	if (next->flags & CF_NEW)	786	if (next->flags & CF_NEW)
736	{	787	{
737	/* need to start coroutine */	788	/* need to start coroutine */
738	next->flags &= ~CF_NEW;	789	next->flags &= ~CF_NEW;
739	/* first get rid of the old state */	790	/* first get rid of the old state */
740	save_perl (prev);	791	save_perl (aTHX_ prev);
741	/* setup coroutine call */	792	/* setup coroutine call */
742	setup_coro (next);	793	setup_coro (aTHX_ next);
743	/* need a new stack */	794	/* need a new stack */
744	assert (!next->stack);	795	assert (!next->cctx);
745	}	796	}
746	else	797	else
747	{	798	{
748	/* coroutine already started */	799	/* coroutine already started */
749	save_perl (prev);	800	save_perl (aTHX_ prev);
750	load_perl (next);	801	load_perl (aTHX_ next);
751	}	802	}
752		803
753	prev__cctx = prev->cctx;	804	prev__cctx = prev->cctx;
754		805
755	/* possibly "free" the cctx */	806	/* possibly "free" the cctx */
756	if (prev__cctx->idle_sp == STACKLEVEL)	807	if (prev__cctx->idle_sp == STACKLEVEL)
757	{	808	{
758	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
759	assert (PL_top_env == prev__cctx->top_env);	810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
760		811
761	prev->cctx = 0;	812	prev->cctx = 0;
762		813
763	cctx_put (prev__cctx);	814	cctx_put (prev__cctx);
764	prev__cctx->inuse = 0;	815	prev__cctx->inuse = 0;
765	}	816	}
766		817
767	if (!next->cctx)	818	if (!next->cctx)
768	{	819	{
769	next->cctx = cctx_get ();	820	next->cctx = cctx_get (aTHX);
770	assert (!next->cctx->inuse);	821	assert (!next->cctx->inuse);
771	next->cctx->inuse = 1;	822	next->cctx->inuse = 1;
772	}	823	}
773		824
774	if (prev__cctx != next->cctx)	825	if (prev__cctx != next->cctx)
…		…
776	prev__cctx->top_env = PL_top_env;	827	prev__cctx->top_env = PL_top_env;
777	PL_top_env = next->cctx->top_env;	828	PL_top_env = next->cctx->top_env;
778	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
779	}	830	}
780		831
781	free_coro_mortal ();	832	free_coro_mortal (aTHX);
782
783	UNLOCK;	833	UNLOCK;
784	}	834	}
785	}	835	}
786		836
787	struct transfer_args	837	struct transfer_args
788	{	838	{
789	struct coro prev, next;	839	struct coro prev, next;
790	};	840	};
791		841
792	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
793		843
		844	/ high level stuff ******************************************************/
		845
794	static void	846	static int
795	coro_state_destroy (struct coro *coro)	847	coro_state_destroy (pTHX_ struct coro *coro)
796	{	848	{
797	if (coro->refcnt--)	849	if (coro->flags & CF_DESTROYED)
798	return;	850	return 0;
		851
		852	coro->flags \|= CF_DESTROYED;
		853
		854	if (coro->flags & CF_READY)
		855	{
		856	/* reduce nready, as destroying a ready coro effectively unreadies it */
		857	/* alternative: look through all ready queues and remove the coro */
		858	LOCK;
		859	--coro_nready;
		860	UNLOCK;
		861	}
		862	else
		863	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
799		864
800	if (coro->mainstack && coro->mainstack != main_mainstack)	865	if (coro->mainstack && coro->mainstack != main_mainstack)
801	{	866	{
802	struct coro temp;	867	struct coro temp;
		868
		869	assert (!(coro->flags & CF_RUNNING));
		870
803	Zero (&temp, 1, struct coro);	871	Zero (&temp, 1, struct coro);
804	temp.save = CORO_SAVE_ALL;	872	temp.save = CORO_SAVE_DEF;
805		873
806	if (coro->flags & CF_RUNNING)	874	if (coro->flags & CF_RUNNING)
807	croak ("FATAL: tried to destroy currently running coroutine");	875	croak ("FATAL: tried to destroy currently running coroutine");
808		876
809	save_perl (&temp);	877	save_perl (aTHX_ &temp);
810	load_perl (coro);	878	load_perl (aTHX_ coro);
811		879
812	coro_destroy_stacks ();	880	coro_destroy_stacks (aTHX);
813		881
814	load_perl (&temp); /* this will get rid of defsv etc.. */	882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
815		883
816	coro->mainstack = 0;	884	coro->mainstack = 0;
817	}	885	}
818		886
819	cctx_destroy (coro->cctx);	887	cctx_destroy (coro->cctx);
820	SvREFCNT_dec (coro->args);	888	SvREFCNT_dec (coro->args);
821	Safefree (coro);	889
		890	return 1;
822	}	891	}
823		892
824	static int	893	static int
825	coro_state_clear (pTHX_ SV sv, MAGIC mg)	894	coro_state_free (pTHX_ SV sv, MAGIC mg)
826	{	895	{
827	struct coro coro = (struct coro )mg->mg_ptr;	896	struct coro coro = (struct coro )mg->mg_ptr;
828	mg->mg_ptr = 0;	897	mg->mg_ptr = 0;
829		898
		899	if (--coro->refcnt < 0)
		900	{
830	coro_state_destroy (coro);	901	coro_state_destroy (aTHX_ coro);
		902	Safefree (coro);
		903	}
831		904
832	return 0;	905	return 0;
833	}	906	}
834		907
835	static int	908	static int
…		…
842	return 0;	915	return 0;
843	}	916	}
844		917
845	static MGVTBL coro_state_vtbl = {	918	static MGVTBL coro_state_vtbl = {
846	0, 0, 0, 0,	919	0, 0, 0, 0,
847	coro_state_clear,	920	coro_state_free,
848	0,	921	0,
849	#ifdef MGf_DUP	922	#ifdef MGf_DUP
850	coro_state_dup,	923	coro_state_dup,
851	#else	924	#else
852	# define MGf_DUP 0	925	# define MGf_DUP 0
853	#endif	926	#endif
854	};	927	};
855		928
856	static struct coro *	929	static struct coro *
857	SvSTATE (SV *coro)	930	SvSTATE_ (pTHX_ SV *coro)
858	{	931	{
859	HV *stash;	932	HV *stash;
860	MAGIC *mg;	933	MAGIC *mg;
861		934
862	if (SvROK (coro))	935	if (SvROK (coro))
…		…
868	/* very slow, but rare, check */	941	/* very slow, but rare, check */
869	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
870	croak ("Coro::State object required");	943	croak ("Coro::State object required");
871	}	944	}
872		945
873	mg = SvMAGIC (coro);	946	mg = CORO_MAGIC (coro);
874	assert (mg->mg_type == PERL_MAGIC_ext);
875	return (struct coro *)mg->mg_ptr;	947	return (struct coro *)mg->mg_ptr;
876	}	948	}
877		949
		950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		951
878	static void	952	static void
879	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	953	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
880	{	954	{
881	ta->prev = SvSTATE (prev_sv);	955	ta->prev = SvSTATE (prev_sv);
882	ta->next = SvSTATE (next_sv);	956	ta->next = SvSTATE (next_sv);
883	}	957	}
884		958
885	static void	959	static void
886	api_transfer (SV prev_sv, SV next_sv)	960	api_transfer (SV prev_sv, SV next_sv)
887	{	961	{
		962	dTHX;
888	struct transfer_args ta;	963	struct transfer_args ta;
889		964
890	prepare_transfer (&ta, prev_sv, next_sv);	965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
891	TRANSFER (ta);	966	TRANSFER (ta);
892	}	967	}
893		968
894	static int	969	static int
895	api_save (SV *coro_sv, int new_save)	970	api_save (SV *coro_sv, int new_save)
896	{	971	{
		972	dTHX;
897	struct coro *coro = SvSTATE (coro_sv);	973	struct coro *coro = SvSTATE (coro_sv);
898	int old_save = coro->save;	974	int old_save = coro->save;
899		975
900	if (new_save >= 0)	976	if (new_save >= 0)
901	coro->save = new_save;	977	coro->save = new_save;
…		…
903	return old_save;	979	return old_save;
904	}	980	}
905		981
906	/ Coro ******************************************************************/	982	/ Coro ******************************************************************/
907		983
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	984	static void
921	coro_enq (SV *coro_sv)	985	coro_enq (pTHX_ SV *coro_sv)
922	{	986	{
923	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	987	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
924	coro_nready++;
925	}	988	}
926		989
927	static SV *	990	static SV *
928	coro_deq (int min_prio)	991	coro_deq (pTHX_ int min_prio)
929	{	992	{
930	int prio = PRIO_MAX - PRIO_MIN;	993	int prio = PRIO_MAX - PRIO_MIN;
931		994
932	min_prio -= PRIO_MIN;	995	min_prio -= PRIO_MIN;
933	if (min_prio < 0)	996	if (min_prio < 0)
934	min_prio = 0;	997	min_prio = 0;
935		998
936	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
937	if (AvFILLp (coro_ready [prio]) >= 0)	1000	if (AvFILLp (coro_ready [prio]) >= 0)
938	{
939	coro_nready--;
940	return av_shift (coro_ready [prio]);	1001	return av_shift (coro_ready [prio]);
941	}
942		1002
943	return 0;	1003	return 0;
944	}	1004	}
945		1005
946	static int	1006	static int
947	api_ready (SV *coro_sv)	1007	api_ready (SV *coro_sv)
948	{	1008	{
		1009	dTHX;
949	struct coro *coro;	1010	struct coro *coro;
950		1011
951	if (SvROK (coro_sv))	1012	if (SvROK (coro_sv))
952	coro_sv = SvRV (coro_sv);	1013	coro_sv = SvRV (coro_sv);
953		1014
954	coro = SvSTATE (coro_sv);	1015	coro = SvSTATE (coro_sv);
955		1016
956	if (coro->flags & CF_READY)	1017	if (coro->flags & CF_READY)
957	return 0;	1018	return 0;
958		1019
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;	1020	coro->flags \|= CF_READY;
965		1021
966	LOCK;	1022	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1024	++coro_nready;
968	UNLOCK;	1025	UNLOCK;
969		1026
970	return 1;	1027	return 1;
971	}	1028	}
972		1029
973	static int	1030	static int
974	api_is_ready (SV *coro_sv)	1031	api_is_ready (SV *coro_sv)
975	{	1032	{
		1033	dTHX;
976	return !!SvSTATE (coro_sv)->flags & CF_READY;	1034	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1035	}
978		1036
979	static void	1037	static void
980	prepare_schedule (struct transfer_args *ta)	1038	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1039	{
982	SV prev, next;	1040	SV prev_sv, next_sv;
983		1041
984	for (;;)	1042	for (;;)
985	{	1043	{
986	LOCK;	1044	LOCK;
987	next = coro_deq (PRIO_MIN);	1045	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1046
		1047	/* nothing to schedule: call the idle handler */
		1048	if (!next_sv)
		1049	{
		1050	dSP;
		1051	UNLOCK;
		1052
		1053	ENTER;
		1054	SAVETMPS;
		1055
		1056	PUSHMARK (SP);
		1057	PUTBACK;
		1058	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1059
		1060	FREETMPS;
		1061	LEAVE;
		1062	continue;
		1063	}
		1064
		1065	ta->next = SvSTATE (next_sv);
		1066
		1067	/* cannot transfer to destroyed coros, skip and look for next */
		1068	if (ta->next->flags & CF_DESTROYED)
		1069	{
		1070	UNLOCK;
		1071	SvREFCNT_dec (next_sv);
		1072	/* coro_nready is already taken care of by destroy */
		1073	continue;
		1074	}
		1075
		1076	--coro_nready;
988	UNLOCK;	1077	UNLOCK;
989
990	if (next)
991	break;	1078	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	}	1079	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1080
1011	/* free this only after the transfer */	1081	/* free this only after the transfer */
1012	LOCK;	1082	prev_sv = SvRV (coro_current);
1013	free_coro_mortal ();	1083	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);	1084	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);
1022		1085
1023	assert (ta->next->flags & CF_READY);	1086	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;	1087	ta->next->flags &= ~CF_READY;
1025	}
1026		1088
		1089	LOCK;
		1090	free_coro_mortal (aTHX);
		1091	coro_mortal = prev_sv;
		1092	UNLOCK;
		1093	}
		1094
1027	static void	1095	static void
1028	prepare_cede (struct transfer_args *ta)	1096	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1097	{
1030	api_ready (coro_current);	1098	api_ready (coro_current);
1031
1032	prepare_schedule (ta);	1099	prepare_schedule (aTHX_ ta);
		1100	}
		1101
		1102	static int
		1103	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1104	{
		1105	if (coro_nready)
		1106	{
		1107	SV *prev = SvRV (coro_current);
		1108	prepare_schedule (aTHX_ ta);
		1109	api_ready (prev);
		1110	return 1;
		1111	}
		1112	else
		1113	return 0;
1033	}	1114	}
1034		1115
1035	static void	1116	static void
1036	api_schedule (void)	1117	api_schedule (void)
1037	{	1118	{
		1119	dTHX;
1038	struct transfer_args ta;	1120	struct transfer_args ta;
1039		1121
1040	prepare_schedule (&ta);	1122	prepare_schedule (aTHX_ &ta);
1041	TRANSFER (ta);	1123	TRANSFER (ta);
1042	}	1124	}
1043		1125
1044	static void	1126	static int
1045	api_cede (void)	1127	api_cede (void)
1046	{	1128	{
		1129	dTHX;
1047	struct transfer_args ta;	1130	struct transfer_args ta;
1048		1131
1049	prepare_cede (&ta);	1132	prepare_cede (aTHX_ &ta);
		1133
		1134	if (ta.prev != ta.next)
		1135	{
1050	TRANSFER (ta);	1136	TRANSFER (ta);
		1137	return 1;
		1138	}
		1139	else
		1140	return 0;
		1141	}
		1142
		1143	static int
		1144	api_cede_notself (void)
		1145	{
		1146	dTHX;
		1147	struct transfer_args ta;
		1148
		1149	if (prepare_cede_notself (aTHX_ &ta))
		1150	{
		1151	TRANSFER (ta);
		1152	return 1;
		1153	}
		1154	else
		1155	return 0;
1051	}	1156	}
1052		1157
1053	MODULE = Coro::State PACKAGE = Coro::State	1158	MODULE = Coro::State PACKAGE = Coro::State
1054		1159
1055	PROTOTYPES: DISABLE	1160	PROTOTYPES: DISABLE
…		…
1065		1170
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1067	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1069	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1070	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1071		1178
1072	main_mainstack = PL_mainstack;	1179	main_mainstack = PL_mainstack;
1073		1180
1074	coroapi.ver = CORO_API_VERSION;	1181	coroapi.ver = CORO_API_VERSION;
…		…
1085	HV *hv;	1192	HV *hv;
1086	int i;	1193	int i;
1087		1194
1088	Newz (0, coro, 1, struct coro);	1195	Newz (0, coro, 1, struct coro);
1089	coro->args = newAV ();	1196	coro->args = newAV ();
1090	coro->save = CORO_SAVE_ALL;	1197	coro->save = CORO_SAVE_DEF;
1091	coro->flags = CF_NEW;	1198	coro->flags = CF_NEW;
1092		1199
1093	hv = newHV ();	1200	hv = newHV ();
1094	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1201	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));	1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1105	CODE:	1212	CODE:
1106	RETVAL = api_save (coro, new_save);	1213	RETVAL = api_save (coro, new_save);
1107	OUTPUT:	1214	OUTPUT:
1108	RETVAL	1215	RETVAL
1109		1216
		1217	int
		1218	save_also (SV *coro_sv, int save_also)
		1219	CODE:
		1220	{
		1221	struct coro *coro = SvSTATE (coro_sv);
		1222	RETVAL = coro->save;
		1223	coro->save \|= save_also;
		1224	}
		1225	OUTPUT:
		1226	RETVAL
		1227
1110	void	1228	void
1111	_set_stacklevel (...)	1229	_set_stacklevel (...)
1112	ALIAS:	1230	ALIAS:
1113	Coro::State::transfer = 1	1231	Coro::State::transfer = 1
1114	Coro::schedule = 2	1232	Coro::schedule = 2
1115	Coro::cede = 3	1233	Coro::cede = 3
		1234	Coro::cede_notself = 4
1116	CODE:	1235	CODE:
1117	{	1236	{
1118	struct transfer_args ta;	1237	struct transfer_args ta;
1119		1238
1120	switch (ix)	1239	switch (ix)
…		…
1126		1245
1127	case 1:	1246	case 1:
1128	if (items != 2)	1247	if (items != 2)
1129	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1248	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1130		1249
1131	prepare_transfer (&ta, ST (0), ST (1));	1250	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1132	break;	1251	break;
1133		1252
1134	case 2:	1253	case 2:
1135	prepare_schedule (&ta);	1254	prepare_schedule (aTHX_ &ta);
1136	break;	1255	break;
1137		1256
1138	case 3:	1257	case 3:
1139	prepare_cede (&ta);	1258	prepare_cede (aTHX_ &ta);
		1259	break;
		1260
		1261	case 4:
		1262	if (!prepare_cede_notself (aTHX_ &ta))
		1263	XSRETURN_EMPTY;
		1264
1140	break;	1265	break;
1141	}	1266	}
1142		1267
		1268	BARRIER;
1143	TRANSFER (ta);	1269	TRANSFER (ta);
1144	}
1145		1270
1146	void	1271	if (GIMME_V != G_VOID && ta.next != ta.prev)
1147	_clone_state_from (SV dst, SV src)	1272	XSRETURN_YES;
		1273	}
		1274
		1275	bool
		1276	_destroy (SV *coro_sv)
1148	CODE:	1277	CODE:
1149	{	1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1150	struct coro *coro_src = SvSTATE (src);	1279	OUTPUT:
1151		1280	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		1281
1158	void	1282	void
1159	_exit (code)	1283	_exit (code)
1160	int code	1284	int code
1161	PROTOTYPE: $	1285	PROTOTYPE: $
1162	CODE:	1286	CODE:
1163	_exit (code);	1287	_exit (code);
1164		1288
1165	int	1289	int
		1290	cctx_stacksize (int new_stacksize = 0)
		1291	CODE:
		1292	RETVAL = coro_stacksize;
		1293	if (new_stacksize)
		1294	coro_stacksize = new_stacksize;
		1295	OUTPUT:
		1296	RETVAL
		1297
		1298	int
1166	cctx_count ()	1299	cctx_count ()
1167	CODE:	1300	CODE:
1168	RETVAL = cctx_count;	1301	RETVAL = cctx_count;
1169	OUTPUT:	1302	OUTPUT:
1170	RETVAL	1303	RETVAL
…		…
1198	coro_ready[i] = newAV ();	1331	coro_ready[i] = newAV ();
1199		1332
1200	{	1333	{
1201	SV *sv = perl_get_sv("Coro::API", 1);	1334	SV *sv = perl_get_sv("Coro::API", 1);
1202		1335
1203	coroapi.schedule = api_schedule;	1336	coroapi.schedule = api_schedule;
1204	coroapi.save = api_save;	1337	coroapi.save = api_save;
1205	coroapi.cede = api_cede;	1338	coroapi.cede = api_cede;
		1339	coroapi.cede_notself = api_cede_notself;
1206	coroapi.ready = api_ready;	1340	coroapi.ready = api_ready;
1207	coroapi.is_ready = api_is_ready;	1341	coroapi.is_ready = api_is_ready;
1208	coroapi.nready = &coro_nready;	1342	coroapi.nready = &coro_nready;
1209	coroapi.current = coro_current;	1343	coroapi.current = coro_current;
1210		1344
1211	GCoroAPI = &coroapi;	1345	GCoroAPI = &coroapi;
1212	sv_setiv (sv, (IV)&coroapi);	1346	sv_setiv (sv, (IV)&coroapi);
1213	SvREADONLY_on (sv);	1347	SvREADONLY_on (sv);
1214	}	1348	}
…		…
1230	RETVAL = coro->prio;	1364	RETVAL = coro->prio;
1231		1365
1232	if (items > 1)	1366	if (items > 1)
1233	{	1367	{
1234	if (ix)	1368	if (ix)
1235	newprio += coro->prio;	1369	newprio = coro->prio - newprio;
1236		1370
1237	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1371	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1238	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1372	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1239		1373
1240	coro->prio = newprio;	1374	coro->prio = newprio;
1241	}	1375	}
1242	}	1376	}
		1377	OUTPUT:
		1378	RETVAL
1243		1379
1244	SV *	1380	SV *
1245	ready (SV *self)	1381	ready (SV *self)
1246	PROTOTYPE: $	1382	PROTOTYPE: $
1247	CODE:	1383	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC vs. Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.123 by root, Mon Dec 4 21:56:00 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC