[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 1.148 by root, Fri Apr 13 12:56:55 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
…		…
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 shoukld be careful, as it could be called at almost any time */
		594	/* during execution of a pelr 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	/* If perl-run returns we assume exit() was being called, which */
588	abort ();	636	/* seems to be the only valid (non-bug) reason for perl_run to return. */
		637	/* We try to exit by jumping to the bootstrap-time "top" top_env, as */
		638	/* we cannot restore the "main" coroutine as Coro has no such concept */
		639	PL_top_env = main_top_env;
		640	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
589	}	641	}
590		642
591	static coro_cctx *	643	static coro_cctx *
592	cctx_new ()	644	cctx_new ()
593	{	645	{
594	coro_cctx *cctx;	646	coro_cctx *cctx;
		647	void *stack_start;
		648	size_t stack_size;
595		649
596	++cctx_count;	650	++cctx_count;
597		651
598	New (0, cctx, 1, coro_cctx);	652	Newz (0, cctx, 1, coro_cctx);
599		653
600	#if HAVE_MMAP	654	#if HAVE_MMAP
601		655
602	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	656	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
603	/* mmap supposedly does allocate-on-write for us */	657	/* 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);	658	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
605		659
606	if (cctx->sptr == (void *)-1)	660	if (cctx->sptr != (void *)-1)
607	{
608	perror ("FATAL: unable to mmap stack for coroutine");
609	_exit (EXIT_FAILURE);
610	}	661	{
611
612	# if STACKGUARD	662	# if CORO_STACKGUARD
613	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	663	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
614	# endif	664	# endif
		665	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		666	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		667	cctx->mapped = 1;
		668	}
		669	else
		670	#endif
		671	{
		672	cctx->ssize = coro_stacksize * (long)sizeof (long);
		673	New (0, cctx->sptr, coro_stacksize, long);
615		674
616	#else
617
618	cctx->ssize = STACKSIZE * (long)sizeof (long);
619	New (0, cctx->sptr, STACKSIZE, long);
620
621	if (!cctx->sptr)	675	if (!cctx->sptr)
622	{	676	{
623	perror ("FATAL: unable to malloc stack for coroutine");	677	perror ("FATAL: unable to allocate stack for coroutine");
624	_exit (EXIT_FAILURE);	678	_exit (EXIT_FAILURE);
625	}	679	}
626		680
627	#endif	681	stack_start = cctx->sptr;
		682	stack_size = cctx->ssize;
		683	}
628		684
629	#if USE_VALGRIND	685	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);	686	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
637		687
638	return cctx;	688	return cctx;
639	}	689	}
640		690
641	static void	691	static void
…		…
644	if (!cctx)	694	if (!cctx)
645	return;	695	return;
646		696
647	--cctx_count;	697	--cctx_count;
648		698
649	#if USE_VALGRIND	699	#if CORO_USE_VALGRIND
650	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	700	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
651	#endif	701	#endif
652		702
653	#if HAVE_MMAP	703	#if HAVE_MMAP
		704	if (cctx->mapped)
654	munmap (cctx->sptr, cctx->ssize);	705	munmap (cctx->sptr, cctx->ssize);
655	#else	706	else
		707	#endif
656	Safefree (cctx->sptr);	708	Safefree (cctx->sptr);
657	#endif
658		709
659	Safefree (cctx);	710	Safefree (cctx);
660	}	711	}
661		712
662	static coro_cctx *	713	static coro_cctx *
663	cctx_get ()	714	cctx_get (pTHX)
664	{	715	{
665	coro_cctx *cctx;
666
667	if (cctx_first)	716	while (cctx_first)
668	{	717	{
669	cctx = cctx_first;	718	coro_cctx *cctx = cctx_first;
670	cctx_first = cctx->next;	719	cctx_first = cctx->next;
671	--cctx_idle;	720	--cctx_idle;
		721
		722	if (cctx->ssize >= coro_stacksize)
		723	return cctx;
		724
		725	cctx_destroy (cctx);
672	}	726	}
673	else	727
674	{
675	cctx = cctx_new ();
676	PL_op = PL_op->op_next;	728	PL_op = PL_op->op_next;
677	}
678
679	return cctx;	729	return cctx_new ();
680	}	730	}
681		731
682	static void	732	static void
683	cctx_put (coro_cctx *cctx)	733	cctx_put (coro_cctx *cctx)
684	{	734	{
…		…
696	++cctx_idle;	746	++cctx_idle;
697	cctx->next = cctx_first;	747	cctx->next = cctx_first;
698	cctx_first = cctx;	748	cctx_first = cctx;
699	}	749	}
700		750
		751	/ coroutine switching ***************************************************/
		752
701	/* never call directly, always through the coro_state_transfer global variable */	753	/* never call directly, always through the coro_state_transfer global variable */
702	static void NOINLINE	754	static void NOINLINE
703	transfer (struct coro prev, struct coro next)	755	transfer (pTHX_ struct coro prev, struct coro next)
704	{	756	{
705	dSTACKLEVEL;	757	dSTACKLEVEL;
706		758
707	/* sometimes transfer is only called to set idle_sp */	759	/* sometimes transfer is only called to set idle_sp */
708	if (!next)	760	if (!next)
		761	{
709	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	762	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
		763	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
		764	}
710	else if (prev != next)	765	else if (prev != next)
711	{	766	{
712	coro_cctx *prev__cctx;	767	coro_cctx *prev__cctx;
713		768
714	if (prev->flags & CF_NEW)	769	if (prev->flags & CF_NEW)
…		…
725	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	780	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
726		781
727	if (next->flags & CF_RUNNING)	782	if (next->flags & CF_RUNNING)
728	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	783	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
729		784
		785	if (next->flags & CF_DESTROYED)
		786	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		787
730	prev->flags &= ~CF_RUNNING;	788	prev->flags &= ~CF_RUNNING;
731	next->flags \|= CF_RUNNING;	789	next->flags \|= CF_RUNNING;
732		790
733	LOCK;	791	LOCK;
734		792
735	if (next->flags & CF_NEW)	793	if (next->flags & CF_NEW)
736	{	794	{
737	/* need to start coroutine */	795	/* need to start coroutine */
738	next->flags &= ~CF_NEW;	796	next->flags &= ~CF_NEW;
739	/* first get rid of the old state */	797	/* first get rid of the old state */
740	save_perl (prev);	798	save_perl (aTHX_ prev);
741	/* setup coroutine call */	799	/* setup coroutine call */
742	setup_coro (next);	800	setup_coro (aTHX_ next);
743	/* need a new stack */	801	/* need a new stack */
744	assert (!next->stack);	802	assert (!next->cctx);
745	}	803	}
746	else	804	else
747	{	805	{
748	/* coroutine already started */	806	/* coroutine already started */
749	save_perl (prev);	807	save_perl (aTHX_ prev);
750	load_perl (next);	808	load_perl (aTHX_ next);
751	}	809	}
752		810
753	prev__cctx = prev->cctx;	811	prev__cctx = prev->cctx;
754		812
755	/* possibly "free" the cctx */	813	/* possibly "free" the cctx */
756	if (prev__cctx->idle_sp == STACKLEVEL)	814	if (prev__cctx->idle_sp == STACKLEVEL)
757	{	815	{
758	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	816	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
759	assert (PL_top_env == prev__cctx->top_env);	817	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
760		818
761	prev->cctx = 0;	819	prev->cctx = 0;
762		820
763	cctx_put (prev__cctx);	821	cctx_put (prev__cctx);
764	prev__cctx->inuse = 0;	822	prev__cctx->inuse = 0;
765	}	823	}
766		824
767	if (!next->cctx)	825	if (!next->cctx)
768	{	826	{
769	next->cctx = cctx_get ();	827	next->cctx = cctx_get (aTHX);
770	assert (!next->cctx->inuse);	828	assert (!next->cctx->inuse);
771	next->cctx->inuse = 1;	829	next->cctx->inuse = 1;
772	}	830	}
773		831
774	if (prev__cctx != next->cctx)	832	if (prev__cctx != next->cctx)
…		…
776	prev__cctx->top_env = PL_top_env;	834	prev__cctx->top_env = PL_top_env;
777	PL_top_env = next->cctx->top_env;	835	PL_top_env = next->cctx->top_env;
778	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	836	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
779	}	837	}
780		838
781	free_coro_mortal ();	839	free_coro_mortal (aTHX);
782
783	UNLOCK;	840	UNLOCK;
784	}	841	}
785	}	842	}
786		843
787	struct transfer_args	844	struct transfer_args
788	{	845	{
789	struct coro prev, next;	846	struct coro prev, next;
790	};	847	};
791		848
792	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	849	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
793		850
		851	/ high level stuff ******************************************************/
		852
794	static void	853	static int
795	coro_state_destroy (struct coro *coro)	854	coro_state_destroy (pTHX_ struct coro *coro)
796	{	855	{
797	if (coro->refcnt--)	856	if (coro->flags & CF_DESTROYED)
798	return;	857	return 0;
		858
		859	coro->flags \|= CF_DESTROYED;
		860
		861	if (coro->flags & CF_READY)
		862	{
		863	/* reduce nready, as destroying a ready coro effectively unreadies it */
		864	/* alternative: look through all ready queues and remove the coro */
		865	LOCK;
		866	--coro_nready;
		867	UNLOCK;
		868	}
		869	else
		870	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
799		871
800	if (coro->mainstack && coro->mainstack != main_mainstack)	872	if (coro->mainstack && coro->mainstack != main_mainstack)
801	{	873	{
802	struct coro temp;	874	struct coro temp;
		875
		876	assert (!(coro->flags & CF_RUNNING));
		877
803	Zero (&temp, 1, struct coro);	878	Zero (&temp, 1, struct coro);
804	temp.save = CORO_SAVE_ALL;	879	temp.save = CORO_SAVE_DEF;
805		880
806	if (coro->flags & CF_RUNNING)	881	if (coro->flags & CF_RUNNING)
807	croak ("FATAL: tried to destroy currently running coroutine");	882	croak ("FATAL: tried to destroy currently running coroutine");
808		883
809	save_perl (&temp);	884	save_perl (aTHX_ &temp);
810	load_perl (coro);	885	load_perl (aTHX_ coro);
811		886
812	coro_destroy_stacks ();	887	coro_destroy_stacks (aTHX);
813		888
814	load_perl (&temp); /* this will get rid of defsv etc.. */	889	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
815		890
816	coro->mainstack = 0;	891	coro->mainstack = 0;
817	}	892	}
818		893
819	cctx_destroy (coro->cctx);	894	cctx_destroy (coro->cctx);
820	SvREFCNT_dec (coro->args);	895	SvREFCNT_dec (coro->args);
821	Safefree (coro);	896
		897	return 1;
822	}	898	}
823		899
824	static int	900	static int
825	coro_state_clear (pTHX_ SV sv, MAGIC mg)	901	coro_state_free (pTHX_ SV sv, MAGIC mg)
826	{	902	{
827	struct coro coro = (struct coro )mg->mg_ptr;	903	struct coro coro = (struct coro )mg->mg_ptr;
828	mg->mg_ptr = 0;	904	mg->mg_ptr = 0;
829		905
		906	if (--coro->refcnt < 0)
		907	{
830	coro_state_destroy (coro);	908	coro_state_destroy (aTHX_ coro);
		909	Safefree (coro);
		910	}
831		911
832	return 0;	912	return 0;
833	}	913	}
834		914
835	static int	915	static int
…		…
842	return 0;	922	return 0;
843	}	923	}
844		924
845	static MGVTBL coro_state_vtbl = {	925	static MGVTBL coro_state_vtbl = {
846	0, 0, 0, 0,	926	0, 0, 0, 0,
847	coro_state_clear,	927	coro_state_free,
848	0,	928	0,
849	#ifdef MGf_DUP	929	#ifdef MGf_DUP
850	coro_state_dup,	930	coro_state_dup,
851	#else	931	#else
852	# define MGf_DUP 0	932	# define MGf_DUP 0
853	#endif	933	#endif
854	};	934	};
855		935
856	static struct coro *	936	static struct coro *
857	SvSTATE (SV *coro)	937	SvSTATE_ (pTHX_ SV *coro)
858	{	938	{
859	HV *stash;	939	HV *stash;
860	MAGIC *mg;	940	MAGIC *mg;
861		941
862	if (SvROK (coro))	942	if (SvROK (coro))
…		…
868	/* very slow, but rare, check */	948	/* very slow, but rare, check */
869	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	949	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
870	croak ("Coro::State object required");	950	croak ("Coro::State object required");
871	}	951	}
872		952
873	mg = SvMAGIC (coro);	953	mg = CORO_MAGIC (coro);
874	assert (mg->mg_type == PERL_MAGIC_ext);
875	return (struct coro *)mg->mg_ptr;	954	return (struct coro *)mg->mg_ptr;
876	}	955	}
877		956
		957	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		958
878	static void	959	static void
879	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	960	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
880	{	961	{
881	ta->prev = SvSTATE (prev_sv);	962	ta->prev = SvSTATE (prev_sv);
882	ta->next = SvSTATE (next_sv);	963	ta->next = SvSTATE (next_sv);
883	}	964	}
884		965
885	static void	966	static void
886	api_transfer (SV prev_sv, SV next_sv)	967	api_transfer (SV prev_sv, SV next_sv)
887	{	968	{
		969	dTHX;
888	struct transfer_args ta;	970	struct transfer_args ta;
889		971
890	prepare_transfer (&ta, prev_sv, next_sv);	972	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
891	TRANSFER (ta);	973	TRANSFER (ta);
892	}	974	}
893		975
894	static int	976	static int
895	api_save (SV *coro_sv, int new_save)	977	api_save (SV *coro_sv, int new_save)
896	{	978	{
		979	dTHX;
897	struct coro *coro = SvSTATE (coro_sv);	980	struct coro *coro = SvSTATE (coro_sv);
898	int old_save = coro->save;	981	int old_save = coro->save;
899		982
900	if (new_save >= 0)	983	if (new_save >= 0)
901	coro->save = new_save;	984	coro->save = new_save;
…		…
903	return old_save;	986	return old_save;
904	}	987	}
905		988
906	/ Coro ******************************************************************/	989	/ Coro ******************************************************************/
907		990
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	991	static void
921	coro_enq (SV *coro_sv)	992	coro_enq (pTHX_ SV *coro_sv)
922	{	993	{
923	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	994	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
924	coro_nready++;
925	}	995	}
926		996
927	static SV *	997	static SV *
928	coro_deq (int min_prio)	998	coro_deq (pTHX_ int min_prio)
929	{	999	{
930	int prio = PRIO_MAX - PRIO_MIN;	1000	int prio = PRIO_MAX - PRIO_MIN;
931		1001
932	min_prio -= PRIO_MIN;	1002	min_prio -= PRIO_MIN;
933	if (min_prio < 0)	1003	if (min_prio < 0)
934	min_prio = 0;	1004	min_prio = 0;
935		1005
936	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1006	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
937	if (AvFILLp (coro_ready [prio]) >= 0)	1007	if (AvFILLp (coro_ready [prio]) >= 0)
938	{
939	coro_nready--;
940	return av_shift (coro_ready [prio]);	1008	return av_shift (coro_ready [prio]);
941	}
942		1009
943	return 0;	1010	return 0;
944	}	1011	}
945		1012
946	static int	1013	static int
947	api_ready (SV *coro_sv)	1014	api_ready (SV *coro_sv)
948	{	1015	{
		1016	dTHX;
949	struct coro *coro;	1017	struct coro *coro;
950		1018
951	if (SvROK (coro_sv))	1019	if (SvROK (coro_sv))
952	coro_sv = SvRV (coro_sv);	1020	coro_sv = SvRV (coro_sv);
953		1021
954	coro = SvSTATE (coro_sv);	1022	coro = SvSTATE (coro_sv);
955		1023
956	if (coro->flags & CF_READY)	1024	if (coro->flags & CF_READY)
957	return 0;	1025	return 0;
958		1026
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;	1027	coro->flags \|= CF_READY;
965		1028
966	LOCK;	1029	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1030	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1031	++coro_nready;
968	UNLOCK;	1032	UNLOCK;
969		1033
970	return 1;	1034	return 1;
971	}	1035	}
972		1036
973	static int	1037	static int
974	api_is_ready (SV *coro_sv)	1038	api_is_ready (SV *coro_sv)
975	{	1039	{
		1040	dTHX;
976	return !!SvSTATE (coro_sv)->flags & CF_READY;	1041	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1042	}
978		1043
979	static void	1044	static void
980	prepare_schedule (struct transfer_args *ta)	1045	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1046	{
982	SV prev, next;	1047	SV prev_sv, next_sv;
983		1048
984	for (;;)	1049	for (;;)
985	{	1050	{
986	LOCK;	1051	LOCK;
987	next = coro_deq (PRIO_MIN);	1052	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1053
		1054	/* nothing to schedule: call the idle handler */
		1055	if (!next_sv)
		1056	{
		1057	dSP;
		1058	UNLOCK;
		1059
		1060	ENTER;
		1061	SAVETMPS;
		1062
		1063	PUSHMARK (SP);
		1064	PUTBACK;
		1065	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1066
		1067	FREETMPS;
		1068	LEAVE;
		1069	continue;
		1070	}
		1071
		1072	ta->next = SvSTATE (next_sv);
		1073
		1074	/* cannot transfer to destroyed coros, skip and look for next */
		1075	if (ta->next->flags & CF_DESTROYED)
		1076	{
		1077	UNLOCK;
		1078	SvREFCNT_dec (next_sv);
		1079	/* coro_nready is already taken care of by destroy */
		1080	continue;
		1081	}
		1082
		1083	--coro_nready;
988	UNLOCK;	1084	UNLOCK;
989
990	if (next)
991	break;	1085	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	}	1086	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1087
1011	/* free this only after the transfer */	1088	/* free this only after the transfer */
1012	LOCK;	1089	prev_sv = SvRV (coro_current);
1013	free_coro_mortal ();	1090	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);	1091	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);
1022		1092
1023	assert (ta->next->flags & CF_READY);	1093	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;	1094	ta->next->flags &= ~CF_READY;
1025	}
1026		1095
		1096	LOCK;
		1097	free_coro_mortal (aTHX);
		1098	coro_mortal = prev_sv;
		1099	UNLOCK;
		1100	}
		1101
1027	static void	1102	static void
1028	prepare_cede (struct transfer_args *ta)	1103	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1104	{
1030	api_ready (coro_current);	1105	api_ready (coro_current);
1031
1032	prepare_schedule (ta);	1106	prepare_schedule (aTHX_ ta);
		1107	}
		1108
		1109	static int
		1110	prepare_cede_notself (pTHX_ struct transfer_args *ta)
		1111	{
		1112	if (coro_nready)
		1113	{
		1114	SV *prev = SvRV (coro_current);
		1115	prepare_schedule (aTHX_ ta);
		1116	api_ready (prev);
		1117	return 1;
		1118	}
		1119	else
		1120	return 0;
1033	}	1121	}
1034		1122
1035	static void	1123	static void
1036	api_schedule (void)	1124	api_schedule (void)
1037	{	1125	{
		1126	dTHX;
1038	struct transfer_args ta;	1127	struct transfer_args ta;
1039		1128
1040	prepare_schedule (&ta);	1129	prepare_schedule (aTHX_ &ta);
1041	TRANSFER (ta);	1130	TRANSFER (ta);
1042	}	1131	}
1043		1132
1044	static void	1133	static int
1045	api_cede (void)	1134	api_cede (void)
1046	{	1135	{
		1136	dTHX;
1047	struct transfer_args ta;	1137	struct transfer_args ta;
1048		1138
1049	prepare_cede (&ta);	1139	prepare_cede (aTHX_ &ta);
		1140
		1141	if (ta.prev != ta.next)
		1142	{
1050	TRANSFER (ta);	1143	TRANSFER (ta);
		1144	return 1;
		1145	}
		1146	else
		1147	return 0;
		1148	}
		1149
		1150	static int
		1151	api_cede_notself (void)
		1152	{
		1153	dTHX;
		1154	struct transfer_args ta;
		1155
		1156	if (prepare_cede_notself (aTHX_ &ta))
		1157	{
		1158	TRANSFER (ta);
		1159	return 1;
		1160	}
		1161	else
		1162	return 0;
1051	}	1163	}
1052		1164
1053	MODULE = Coro::State PACKAGE = Coro::State	1165	MODULE = Coro::State PACKAGE = Coro::State
1054		1166
1055	PROTOTYPES: DISABLE	1167	PROTOTYPES: DISABLE
…		…
1065		1177
1066	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1178	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1067	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1179	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1068	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1180	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1069	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1181	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1182	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1183	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1070	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1184	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1071		1185
1072	main_mainstack = PL_mainstack;	1186	main_mainstack = PL_mainstack;
		1187	main_top_env = PL_top_env;
		1188
		1189	while (main_top_env->je_prev)
		1190	main_top_env = main_top_env->je_prev;
1073		1191
1074	coroapi.ver = CORO_API_VERSION;	1192	coroapi.ver = CORO_API_VERSION;
1075	coroapi.transfer = api_transfer;	1193	coroapi.transfer = api_transfer;
1076		1194
1077	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1195	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1085	HV *hv;	1203	HV *hv;
1086	int i;	1204	int i;
1087		1205
1088	Newz (0, coro, 1, struct coro);	1206	Newz (0, coro, 1, struct coro);
1089	coro->args = newAV ();	1207	coro->args = newAV ();
1090	coro->save = CORO_SAVE_ALL;	1208	coro->save = CORO_SAVE_DEF;
1091	coro->flags = CF_NEW;	1209	coro->flags = CF_NEW;
1092		1210
1093	hv = newHV ();	1211	hv = newHV ();
1094	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1212	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));	1213	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1105	CODE:	1223	CODE:
1106	RETVAL = api_save (coro, new_save);	1224	RETVAL = api_save (coro, new_save);
1107	OUTPUT:	1225	OUTPUT:
1108	RETVAL	1226	RETVAL
1109		1227
		1228	int
		1229	save_also (SV *coro_sv, int save_also)
		1230	CODE:
		1231	{
		1232	struct coro *coro = SvSTATE (coro_sv);
		1233	RETVAL = coro->save;
		1234	coro->save \|= save_also;
		1235	}
		1236	OUTPUT:
		1237	RETVAL
		1238
1110	void	1239	void
1111	_set_stacklevel (...)	1240	_set_stacklevel (...)
1112	ALIAS:	1241	ALIAS:
1113	Coro::State::transfer = 1	1242	Coro::State::transfer = 1
1114	Coro::schedule = 2	1243	Coro::schedule = 2
1115	Coro::cede = 3	1244	Coro::cede = 3
		1245	Coro::cede_notself = 4
1116	CODE:	1246	CODE:
1117	{	1247	{
1118	struct transfer_args ta;	1248	struct transfer_args ta;
1119		1249
1120	switch (ix)	1250	switch (ix)
…		…
1126		1256
1127	case 1:	1257	case 1:
1128	if (items != 2)	1258	if (items != 2)
1129	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1259	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1130		1260
1131	prepare_transfer (&ta, ST (0), ST (1));	1261	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1132	break;	1262	break;
1133		1263
1134	case 2:	1264	case 2:
1135	prepare_schedule (&ta);	1265	prepare_schedule (aTHX_ &ta);
1136	break;	1266	break;
1137		1267
1138	case 3:	1268	case 3:
1139	prepare_cede (&ta);	1269	prepare_cede (aTHX_ &ta);
		1270	break;
		1271
		1272	case 4:
		1273	if (!prepare_cede_notself (aTHX_ &ta))
		1274	XSRETURN_EMPTY;
		1275
1140	break;	1276	break;
1141	}	1277	}
1142		1278
		1279	BARRIER;
1143	TRANSFER (ta);	1280	TRANSFER (ta);
1144	}
1145		1281
1146	void	1282	if (GIMME_V != G_VOID && ta.next != ta.prev)
1147	_clone_state_from (SV dst, SV src)	1283	XSRETURN_YES;
		1284	}
		1285
		1286	bool
		1287	_destroy (SV *coro_sv)
1148	CODE:	1288	CODE:
1149	{	1289	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1150	struct coro *coro_src = SvSTATE (src);	1290	OUTPUT:
1151		1291	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		1292
1158	void	1293	void
1159	_exit (code)	1294	_exit (code)
1160	int code	1295	int code
1161	PROTOTYPE: $	1296	PROTOTYPE: $
1162	CODE:	1297	CODE:
1163	_exit (code);	1298	_exit (code);
1164		1299
1165	int	1300	int
		1301	cctx_stacksize (int new_stacksize = 0)
		1302	CODE:
		1303	RETVAL = coro_stacksize;
		1304	if (new_stacksize)
		1305	coro_stacksize = new_stacksize;
		1306	OUTPUT:
		1307	RETVAL
		1308
		1309	int
1166	cctx_count ()	1310	cctx_count ()
1167	CODE:	1311	CODE:
1168	RETVAL = cctx_count;	1312	RETVAL = cctx_count;
1169	OUTPUT:	1313	OUTPUT:
1170	RETVAL	1314	RETVAL
…		…
1198	coro_ready[i] = newAV ();	1342	coro_ready[i] = newAV ();
1199		1343
1200	{	1344	{
1201	SV *sv = perl_get_sv("Coro::API", 1);	1345	SV *sv = perl_get_sv("Coro::API", 1);
1202		1346
1203	coroapi.schedule = api_schedule;	1347	coroapi.schedule = api_schedule;
1204	coroapi.save = api_save;	1348	coroapi.save = api_save;
1205	coroapi.cede = api_cede;	1349	coroapi.cede = api_cede;
		1350	coroapi.cede_notself = api_cede_notself;
1206	coroapi.ready = api_ready;	1351	coroapi.ready = api_ready;
1207	coroapi.is_ready = api_is_ready;	1352	coroapi.is_ready = api_is_ready;
1208	coroapi.nready = &coro_nready;	1353	coroapi.nready = &coro_nready;
1209	coroapi.current = coro_current;	1354	coroapi.current = coro_current;
1210		1355
1211	GCoroAPI = &coroapi;	1356	GCoroAPI = &coroapi;
1212	sv_setiv (sv, (IV)&coroapi);	1357	sv_setiv (sv, (IV)&coroapi);
1213	SvREADONLY_on (sv);	1358	SvREADONLY_on (sv);
1214	}	1359	}
…		…
1230	RETVAL = coro->prio;	1375	RETVAL = coro->prio;
1231		1376
1232	if (items > 1)	1377	if (items > 1)
1233	{	1378	{
1234	if (ix)	1379	if (ix)
1235	newprio += coro->prio;	1380	newprio = coro->prio - newprio;
1236		1381
1237	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1382	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1238	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1383	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1239		1384
1240	coro->prio = newprio;	1385	coro->prio = newprio;
1241	}	1386	}
1242	}	1387	}
		1388	OUTPUT:
		1389	RETVAL
1243		1390
1244	SV *	1391	SV *
1245	ready (SV *self)	1392	ready (SV *self)
1246	PROTOTYPE: $	1393	PROTOTYPE: $
1247	CODE:	1394	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 1.148 by root, Fri Apr 13 12:56:55 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 1.148 by root, Fri Apr 13 12:56:55 2007 UTC