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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.124 by root, Tue Dec 5 12:50:04 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	#include <assert.h>	13	#include <assert.h>
46
47	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
48	# undef STACKGUARD
49	#endif
50
51	#ifndef STACKGUARD
52	# define STACKGUARD 0
53	#endif
54		14
55	#ifdef HAVE_MMAP	15	#ifdef HAVE_MMAP
56	# include <unistd.h>	16	# include <unistd.h>
57	# include <sys/mman.h>	17	# include <sys/mman.h>
58	# ifndef MAP_ANONYMOUS	18	# ifndef MAP_ANONYMOUS
73	#else	33	#else
74	# define PAGESIZE 0	34	# define PAGESIZE 0
75	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
76	#endif	36	#endif
77		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
78	/* 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
79	* 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
80	* and should be unique. */	95	* and should be unique. */
81	#define dSTACKLEVEL int stacklevel	96	#define dSTACKLEVEL int stacklevel
82	#define STACKLEVEL ((void *)&stacklevel)	97	#define STACKLEVEL ((void *)&stacklevel)
83		98
84	#define IN_DESTRUCT (PL_main_cv == Nullcv)	99	#define IN_DESTRUCT (PL_main_cv == Nullcv)
85		100
86	#if __GNUC__ >= 3	101	#if __GNUC__ >= 3
87	# define attribute(x) __attribute__(x)	102	# define attribute(x) __attribute__(x)
		103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
88	#else	104	#else
89	# define attribute(x)	105	# define attribute(x)
		106	# define BARRIER
90	#endif	107	#endif
91		108
92	#define NOINLINE attribute ((noinline))	109	#define NOINLINE attribute ((noinline))
93		110
94	#include "CoroAPI.h"	111	#include "CoroAPI.h"
…		…
100	#else	117	#else
101	# define LOCK (void)0	118	# define LOCK (void)0
102	# define UNLOCK (void)0	119	# define UNLOCK (void)0
103	#endif	120	#endif
104		121
		122	/* helper storage struct for Coro::AIO */
105	struct io_state	123	struct io_state
106	{	124	{
107	int errorno;	125	int errorno;
108	I32 laststype;	126	I32 laststype;
109	int laststatval;	127	int laststatval;
110	Stat_t statcache;	128	Stat_t statcache;
111	};	129	};
112		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
113	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
114	static AV main_mainstack; / used to differentiate between $main and others */	133	static AV main_mainstack; / used to differentiate between $main and others */
115	static HV coro_state_stash, coro_stash;	134	static HV coro_state_stash, coro_stash;
116	static SV coro_mortal; / will be freed after next transfer */	135	static SV coro_mortal; / will be freed after next transfer */
117		136
…		…
122	typedef struct coro_cctx {	141	typedef struct coro_cctx {
123	struct coro_cctx *next;	142	struct coro_cctx *next;
124		143
125	/* the stack */	144	/* the stack */
126	void *sptr;	145	void *sptr;
127	long ssize; /* positive == mmap, otherwise malloc */	146	size_t ssize;
128		147
129	/* cpu state */	148	/* cpu state */
130	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 */
131	JMPENV *top_env;	151	JMPENV *top_env;
132	coro_context cctx;	152	coro_context cctx;
133		153
134	int inuse;
135
136	#if USE_VALGRIND	154	#if CORO_USE_VALGRIND
137	int valgrind_id;	155	int valgrind_id;
138	#endif	156	#endif
		157	char inuse, mapped;
139	} coro_cctx;	158	} coro_cctx;
140		159
141	enum {	160	enum {
142	CF_RUNNING = 0x0001, /* coroutine is running */	161	CF_RUNNING = 0x0001, /* coroutine is running */
143	CF_READY = 0x0002, /* coroutine is ready */	162	CF_READY = 0x0002, /* coroutine is ready */
144	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 */
145	};	165	};
146		166
147	/* this is a structure representing a perl-level coroutine */	167	/* this is a structure representing a perl-level coroutine */
148	struct coro {	168	struct coro {
149	/* the c coroutine allocated to this perl coroutine, if any */	169	/* the c coroutine allocated to this perl coroutine, if any */
…		…
157		177
158	/* optionally saved, might be zero */	178	/* optionally saved, might be zero */
159	AV defav; / @_ */	179	AV defav; / @_ */
160	SV defsv; / $_ */	180	SV defsv; / $_ */
161	SV errsv; / $@ */	181	SV errsv; / $@ */
		182	GV deffh; / default filehandle */
162	SV irssv; / $/ */	183	SV irssv; / $/ */
163	SV irssv_sv; / real $/ cache */	184	SV irssv_sv; / real $/ cache */
164		185
165	#define VAR(name,type) type name;	186	#define VAR(name,type) type name;
166	# include "state.h"	187	# include "state.h"
…		…
171	};	192	};
172		193
173	typedef struct coro *Coro__State;	194	typedef struct coro *Coro__State;
174	typedef struct coro *Coro__State_or_hashref;	195	typedef struct coro *Coro__State_or_hashref;
175		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
176	static AV *	213	static AV *
177	coro_clone_padlist (CV *cv)	214	coro_clone_padlist (pTHX_ CV *cv)
178	{	215	{
179	AV *padlist = CvPADLIST (cv);	216	AV *padlist = CvPADLIST (cv);
180	AV newpadlist, newpad;	217	AV newpadlist, newpad;
181		218
182	newpadlist = newAV ();	219	newpadlist = newAV ();
…		…
194		231
195	return newpadlist;	232	return newpadlist;
196	}	233	}
197		234
198	static void	235	static void
199	free_padlist (AV *padlist)	236	free_padlist (pTHX_ AV *padlist)
200	{	237	{
201	/* may be during global destruction */	238	/* may be during global destruction */
202	if (SvREFCNT (padlist))	239	if (SvREFCNT (padlist))
203	{	240	{
204	I32 i = AvFILLp (padlist);	241	I32 i = AvFILLp (padlist);
…		…
225	AV *padlist;	262	AV *padlist;
226	AV av = (AV )mg->mg_obj;	263	AV av = (AV )mg->mg_obj;
227		264
228	/* casting is fun. */	265	/* casting is fun. */
229	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	266	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
230	free_padlist (padlist);	267	free_padlist (aTHX_ padlist);
231		268
232	SvREFCNT_dec (av);	269	SvREFCNT_dec (av);
233		270
234	return 0;	271	return 0;
235	}	272	}
…		…
245	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
246	: 0	283	: 0
247		284
248	/* the next two functions merely cache the padlists */	285	/* the next two functions merely cache the padlists */
249	static void	286	static void
250	get_padlist (CV *cv)	287	get_padlist (pTHX_ CV *cv)
251	{	288	{
252	MAGIC *mg = CORO_MAGIC (cv);	289	MAGIC *mg = CORO_MAGIC (cv);
253	AV *av;	290	AV *av;
254		291
255	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
256	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
257	else	294	else
258	{	295	{
259	#if 0	296	#if CORO_PREFER_PERL_FUNCTIONS
260	/* this is probably cleaner, but also slower? */	297	/* this is probably cleaner, but also slower? */
261	CV *cp = Perl_cv_clone (cv);	298	CV *cp = Perl_cv_clone (cv);
262	CvPADLIST (cv) = CvPADLIST (cp);	299	CvPADLIST (cv) = CvPADLIST (cp);
263	CvPADLIST (cp) = 0;	300	CvPADLIST (cp) = 0;
264	SvREFCNT_dec (cp);	301	SvREFCNT_dec (cp);
265	#else	302	#else
266	CvPADLIST (cv) = coro_clone_padlist (cv);	303	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
267	#endif	304	#endif
268	}	305	}
269	}	306	}
270		307
271	static void	308	static void
272	put_padlist (CV *cv)	309	put_padlist (pTHX_ CV *cv)
273	{	310	{
274	MAGIC *mg = CORO_MAGIC (cv);	311	MAGIC *mg = CORO_MAGIC (cv);
275	AV *av;	312	AV *av;
276		313
277	if (!mg)	314	if (!mg)
…		…
288	av_extend (av, AvMAX (av) + 1);	325	av_extend (av, AvMAX (av) + 1);
289		326
290	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
291	}	328	}
292		329
		330	/ load & save, init *****************************************************/
		331
293	#define SB do {	332	#define SB do {
294	#define SE } while (0)	333	#define SE } while (0)
295		334
296	#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
297		336
298	static void	337	static void
299	load_perl (Coro__State c)	338	load_perl (pTHX_ Coro__State c)
300	{	339	{
301	#define VAR(name,type) PL_ ## name = c->name;	340	#define VAR(name,type) PL_ ## name = c->name;
302	# include "state.h"	341	# include "state.h"
303	#undef VAR	342	#undef VAR
304		343
305	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
306	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
307	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
308	if (c->irssv)	349	if (c->irssv)
309	{	350	{
310	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	351	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		352	{
311	SvREFCNT_dec (c->irssv);	353	SvREFCNT_dec (c->irssv);
		354	c->irssv = 0;
		355	}
312	else	356	else
313	{	357	{
314	REPLACE_SV (PL_rs, c->irssv);	358	REPLACE_SV (PL_rs, c->irssv);
315	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
316	sv_setsv (c->irssv_sv, PL_rs);	360	sv_setsv (c->irssv_sv, PL_rs);
…		…
322	CV *cv;	366	CV *cv;
323		367
324	/* now do the ugly restore mess */	368	/* now do the ugly restore mess */
325	while ((cv = (CV *)POPs))	369	while ((cv = (CV *)POPs))
326	{	370	{
327	put_padlist (cv); /* mark this padlist as available */	371	put_padlist (aTHX_ cv); /* mark this padlist as available */
328	CvDEPTH (cv) = PTR2IV (POPs);	372	CvDEPTH (cv) = PTR2IV (POPs);
329	CvPADLIST (cv) = (AV *)POPs;	373	CvPADLIST (cv) = (AV *)POPs;
330	}	374	}
331		375
332	PUTBACK;	376	PUTBACK;
333	}	377	}
		378	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
334	}	379	}
335		380
336	static void	381	static void
337	save_perl (Coro__State c)	382	save_perl (pTHX_ Coro__State c)
338	{	383	{
		384	assert (!PL_comppad \|\| AvARRAY (PL_comppad));//D
339	{	385	{
340	dSP;	386	dSP;
341	I32 cxix = cxstack_ix;	387	I32 cxix = cxstack_ix;
342	PERL_CONTEXT *ccstk = cxstack;	388	PERL_CONTEXT *ccstk = cxstack;
343	PERL_SI *top_si = PL_curstackinfo;	389	PERL_SI *top_si = PL_curstackinfo;
…		…
345	/*	391	/*
346	* 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
347	* (and reinitialize) all cv's in the whole callchain :(	393	* (and reinitialize) all cv's in the whole callchain :(
348	*/	394	*/
349		395
		396	EXTEND (SP, 3 + 1);
350	PUSHs (Nullsv);	397	PUSHs (Nullsv);
351	/* this loop was inspired by pp_caller */	398	/* this loop was inspired by pp_caller */
352	for (;;)	399	for (;;)
353	{	400	{
354	while (cxix >= 0)	401	while (cxix >= 0)
…		…
360	CV *cv = cx->blk_sub.cv;	407	CV *cv = cx->blk_sub.cv;
361		408
362	if (CvDEPTH (cv))	409	if (CvDEPTH (cv))
363	{	410	{
364	EXTEND (SP, 3);	411	EXTEND (SP, 3);
365
366	PUSHs ((SV *)CvPADLIST (cv));	412	PUSHs ((SV *)CvPADLIST (cv));
367	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
368	PUSHs ((SV *)cv);	414	PUSHs ((SV *)cv);
369		415
370	CvDEPTH (cv) = 0;	416	CvDEPTH (cv) = 0;
371	get_padlist (cv);	417	get_padlist (aTHX_ cv);
372	}	418	}
373	}	419	}
374	#ifdef CXt_FORMAT
375	else if (CxTYPE (cx) == CXt_FORMAT)
376	{
377	/* I never used formats, so how should I know how these are implemented? */
378	/* my bold guess is as a simple, plain sub... */
379	croak ("CXt_FORMAT not yet handled. Don't switch coroutines from within formats");
380	}
381	#endif
382	}	420	}
383		421
384	if (top_si->si_type == PERLSI_MAIN)	422	if (top_si->si_type == PERLSI_MAIN)
385	break;	423	break;
386		424
…		…
393	}	431	}
394		432
395	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;
396	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
397	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;
398	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;
399		438
400	#define VAR(name,type)c->name = PL_ ## name;	439	#define VAR(name,type)c->name = PL_ ## name;
401	# include "state.h"	440	# include "state.h"
402	#undef VAR	441	#undef VAR
…		…
406	* allocate various perl stacks. This is an exact copy	445	* allocate various perl stacks. This is an exact copy
407	* of perl.c:init_stacks, except that it uses less memory	446	* of perl.c:init_stacks, except that it uses less memory
408	* on the (sometimes correct) assumption that coroutines do	447	* on the (sometimes correct) assumption that coroutines do
409	* not usually need a lot of stackspace.	448	* not usually need a lot of stackspace.
410	*/	449	*/
		450	#if CORO_PREFER_PERL_FUNCTIONS
		451	# define coro_init_stacks init_stacks
		452	#else
411	static void	453	static void
412	coro_init_stacks ()	454	coro_init_stacks (pTHX)
413	{	455	{
414	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
415	PL_curstackinfo->si_type = PERLSI_MAIN;	457	PL_curstackinfo->si_type = PERLSI_MAIN;
416	PL_curstack = PL_curstackinfo->si_stack;	458	PL_curstack = PL_curstackinfo->si_stack;
417	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
445	New(54,PL_retstack,16,OP*);	487	New(54,PL_retstack,16,OP*);
446	PL_retstack_ix = 0;	488	PL_retstack_ix = 0;
447	PL_retstack_max = 16;	489	PL_retstack_max = 16;
448	#endif	490	#endif
449	}	491	}
		492	#endif
450		493
451	/*	494	/*
452	* destroy the stacks, the callchain etc...	495	* destroy the stacks, the callchain etc...
453	*/	496	*/
454	static void	497	static void
455	coro_destroy_stacks ()	498	coro_destroy_stacks (pTHX)
456	{	499	{
457	if (!IN_DESTRUCT)	500	if (!IN_DESTRUCT)
458	{	501	{
459	/* is this ugly, I ask? */	502	/* restore all saved variables and stuff */
460	LEAVE_SCOPE (0);	503	LEAVE_SCOPE (0);
		504	assert (PL_tmps_floor == -1);
461		505
462	/* sure it is, but more important: is it correct?? :/ */	506	/* free all temporaries */
463	FREETMPS;	507	FREETMPS;
		508	assert (PL_tmps_ix == -1);
464		509
		510	/* unwind all extra stacks */
465	/POPSTACK_TO (PL_mainstack);//D//use/	511	POPSTACK_TO (PL_mainstack);
		512
		513	/* unwind main stack */
		514	dounwind (-1);
466	}	515	}
467		516
468	while (PL_curstackinfo->si_next)	517	while (PL_curstackinfo->si_next)
469	PL_curstackinfo = PL_curstackinfo->si_next;	518	PL_curstackinfo = PL_curstackinfo->si_next;
470		519
471	while (PL_curstackinfo)	520	while (PL_curstackinfo)
472	{	521	{
473	PERL_SI *p = PL_curstackinfo->si_prev;	522	PERL_SI *p = PL_curstackinfo->si_prev;
474		523
475	{ /D//remove/
476	dSP;
477	SWITCHSTACK (PL_curstack, PL_curstackinfo->si_stack);
478	PUTBACK; /* possibly superfluous */
479	}
480
481	if (!IN_DESTRUCT)	524	if (!IN_DESTRUCT)
482	{
483	dounwind (-1);/D//remove/
484	SvREFCNT_dec (PL_curstackinfo->si_stack);	525	SvREFCNT_dec (PL_curstackinfo->si_stack);
485	}
486		526
487	Safefree (PL_curstackinfo->si_cxstack);	527	Safefree (PL_curstackinfo->si_cxstack);
488	Safefree (PL_curstackinfo);	528	Safefree (PL_curstackinfo);
489	PL_curstackinfo = p;	529	PL_curstackinfo = p;
490	}	530	}
…		…
496	#if !PERL_VERSION_ATLEAST (5,9,0)	536	#if !PERL_VERSION_ATLEAST (5,9,0)
497	Safefree (PL_retstack);	537	Safefree (PL_retstack);
498	#endif	538	#endif
499	}	539	}
500		540
		541	/ coroutine stack handling **********************************************/
		542
501	static void	543	static void
502	setup_coro (struct coro *coro)	544	setup_coro (pTHX_ struct coro *coro)
503	{	545	{
504	/*	546	/*
505	* emulate part of the perl startup here.	547	* emulate part of the perl startup here.
506	*/	548	*/
507
508	coro_init_stacks ();	549	coro_init_stacks (aTHX);
509		550
510	PL_curcop = &PL_compiling;	551	PL_curcop = &PL_compiling;
511	PL_in_eval = EVAL_NULL;	552	PL_in_eval = EVAL_NULL;
		553	PL_comppad = 0;
512	PL_curpm = 0;	554	PL_curpm = 0;
513	PL_localizing = 0;	555	PL_localizing = 0;
514	PL_dirty = 0;	556	PL_dirty = 0;
515	PL_restartop = 0;	557	PL_restartop = 0;
516		558
…		…
535		577
536	ENTER; /* necessary e.g. for dounwind */	578	ENTER; /* necessary e.g. for dounwind */
537	}	579	}
538		580
539	static void	581	static void
540	free_coro_mortal ()	582	free_coro_mortal (pTHX)
541	{	583	{
542	if (coro_mortal)	584	if (coro_mortal)
543	{	585	{
544	SvREFCNT_dec (coro_mortal);	586	SvREFCNT_dec (coro_mortal);
545	coro_mortal = 0;	587	coro_mortal = 0;
546	}	588	}
547	}	589	}
548		590
549	/* 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 */
550	static void NOINLINE	592	static void NOINLINE
551	prepare_cctx (coro_cctx *cctx)	593	prepare_cctx (pTHX_ coro_cctx *cctx)
552	{	594	{
553	dSP;	595	dSP;
554	LOGOP myop;	596	LOGOP myop;
555		597
556	Zero (&myop, 1, LOGOP);	598	Zero (&myop, 1, LOGOP);
…		…
568	}	610	}
569		611
570	static void	612	static void
571	coro_run (void *arg)	613	coro_run (void *arg)
572	{	614	{
		615	dTHX;
		616
573	/* coro_run is the alternative tail of transfer(), so unlock here. */	617	/* coro_run is the alternative tail of transfer(), so unlock here. */
574	UNLOCK;	618	UNLOCK;
575		619
576	/*	620	/*
577	* this is a _very_ stripped down perl interpreter ;)	621	* this is a _very_ stripped down perl interpreter ;)
578	*/	622	*/
579	PL_top_env = &PL_start_env;	623	PL_top_env = &PL_start_env;
580		624
581	/* inject call to cctx_init */	625	/* inject call to cctx_init */
582	prepare_cctx ((coro_cctx *)arg);	626	prepare_cctx (aTHX_ (coro_cctx *)arg);
583		627
584	/* somebody will hit me for both perl_run and PL_restartop */	628	/* somebody will hit me for both perl_run and PL_restartop */
585	PL_restartop = PL_op;	629	PL_restartop = PL_op;
586	perl_run (PL_curinterp);	630	perl_run (PL_curinterp);
587		631
…		…
591		635
592	static coro_cctx *	636	static coro_cctx *
593	cctx_new ()	637	cctx_new ()
594	{	638	{
595	coro_cctx *cctx;	639	coro_cctx *cctx;
		640	void *stack_start;
		641	size_t stack_size;
596		642
597	++cctx_count;	643	++cctx_count;
598		644
599	Newz (0, cctx, 1, coro_cctx);	645	Newz (0, cctx, 1, coro_cctx);
600		646
601	#if HAVE_MMAP	647	#if HAVE_MMAP
602		648
603	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
604	/* mmap supposedly does allocate-on-write for us */	650	/* mmap supposedly does allocate-on-write for us */
605	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);
606		652
607	if (cctx->sptr == (void *)-1)	653	if (cctx->sptr != (void *)-1)
608	{
609	perror ("FATAL: unable to mmap stack for coroutine");
610	_exit (EXIT_FAILURE);
611	}	654	{
612
613	# if STACKGUARD	655	# if CORO_STACKGUARD
614	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
615	# 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);
616		667
617	#else
618
619	cctx->ssize = STACKSIZE * (long)sizeof (long);
620	New (0, cctx->sptr, STACKSIZE, long);
621
622	if (!cctx->sptr)	668	if (!cctx->sptr)
623	{	669	{
624	perror ("FATAL: unable to malloc stack for coroutine");	670	perror ("FATAL: unable to allocate stack for coroutine");
625	_exit (EXIT_FAILURE);	671	_exit (EXIT_FAILURE);
626	}	672	}
627		673
628	#endif	674	stack_start = cctx->sptr;
		675	stack_size = cctx->ssize;
		676	}
629		677
630	#if USE_VALGRIND	678	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
631	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
632	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
633	cctx->ssize + (char *)cctx->sptr
634	);
635	#endif
636
637	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);
638		680
639	return cctx;	681	return cctx;
640	}	682	}
641		683
642	static void	684	static void
…		…
645	if (!cctx)	687	if (!cctx)
646	return;	688	return;
647		689
648	--cctx_count;	690	--cctx_count;
649		691
650	#if USE_VALGRIND	692	#if CORO_USE_VALGRIND
651	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
652	#endif	694	#endif
653		695
654	#if HAVE_MMAP	696	#if HAVE_MMAP
		697	if (cctx->mapped)
655	munmap (cctx->sptr, cctx->ssize);	698	munmap (cctx->sptr, cctx->ssize);
656	#else	699	else
		700	#endif
657	Safefree (cctx->sptr);	701	Safefree (cctx->sptr);
658	#endif
659		702
660	Safefree (cctx);	703	Safefree (cctx);
661	}	704	}
662		705
663	static coro_cctx *	706	static coro_cctx *
664	cctx_get ()	707	cctx_get (pTHX)
665	{	708	{
666	coro_cctx *cctx;
667
668	if (cctx_first)	709	while (cctx_first)
669	{	710	{
670	cctx = cctx_first;	711	coro_cctx *cctx = cctx_first;
671	cctx_first = cctx->next;	712	cctx_first = cctx->next;
672	--cctx_idle;	713	--cctx_idle;
		714
		715	if (cctx->ssize >= coro_stacksize)
		716	return cctx;
		717
		718	cctx_destroy (cctx);
673	}	719	}
674	else	720
675	{
676	cctx = cctx_new ();
677	PL_op = PL_op->op_next;	721	PL_op = PL_op->op_next;
678	}
679
680	return cctx;	722	return cctx_new ();
681	}	723	}
682		724
683	static void	725	static void
684	cctx_put (coro_cctx *cctx)	726	cctx_put (coro_cctx *cctx)
685	{	727	{
…		…
697	++cctx_idle;	739	++cctx_idle;
698	cctx->next = cctx_first;	740	cctx->next = cctx_first;
699	cctx_first = cctx;	741	cctx_first = cctx;
700	}	742	}
701		743
		744	/ coroutine switching ***************************************************/
		745
702	/* never call directly, always through the coro_state_transfer global variable */	746	/* never call directly, always through the coro_state_transfer global variable */
703	static void NOINLINE	747	static void NOINLINE
704	transfer (struct coro prev, struct coro next)	748	transfer (pTHX_ struct coro prev, struct coro next)
705	{	749	{
706	dSTACKLEVEL;	750	dSTACKLEVEL;
707		751
708	/* sometimes transfer is only called to set idle_sp */	752	/* sometimes transfer is only called to set idle_sp */
709	if (!next)	753	if (!next)
710	{	754	{
711	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
712	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	756	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
713	}	757	}
714	else if (prev != next)	758	else if (prev != next)
715	{	759	{
716	coro_cctx *prev__cctx;	760	coro_cctx *prev__cctx;
717		761
…		…
729	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");
730		774
731	if (next->flags & CF_RUNNING)	775	if (next->flags & CF_RUNNING)
732	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");
733		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
734	prev->flags &= ~CF_RUNNING;	781	prev->flags &= ~CF_RUNNING;
735	next->flags \|= CF_RUNNING;	782	next->flags \|= CF_RUNNING;
736		783
737	LOCK;	784	LOCK;
738		785
739	if (next->flags & CF_NEW)	786	if (next->flags & CF_NEW)
740	{	787	{
741	/* need to start coroutine */	788	/* need to start coroutine */
742	next->flags &= ~CF_NEW;	789	next->flags &= ~CF_NEW;
743	/* first get rid of the old state */	790	/* first get rid of the old state */
744	save_perl (prev);	791	save_perl (aTHX_ prev);
745	/* setup coroutine call */	792	/* setup coroutine call */
746	setup_coro (next);	793	setup_coro (aTHX_ next);
747	/* need a new stack */	794	/* need a new stack */
748	assert (!next->cctx);	795	assert (!next->cctx);
749	}	796	}
750	else	797	else
751	{	798	{
752	/* coroutine already started */	799	/* coroutine already started */
753	save_perl (prev);	800	save_perl (aTHX_ prev);
754	load_perl (next);	801	load_perl (aTHX_ next);
755	}	802	}
756		803
757	prev__cctx = prev->cctx;	804	prev__cctx = prev->cctx;
758		805
759	/* possibly "free" the cctx */	806	/* possibly "free" the cctx */
760	if (prev__cctx->idle_sp == STACKLEVEL)	807	if (prev__cctx->idle_sp == STACKLEVEL)
761	{	808	{
762	/* 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 */
763	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));
764		811
765	prev->cctx = 0;	812	prev->cctx = 0;
766		813
767	cctx_put (prev__cctx);	814	cctx_put (prev__cctx);
768	prev__cctx->inuse = 0;	815	prev__cctx->inuse = 0;
769	}	816	}
770		817
771	if (!next->cctx)	818	if (!next->cctx)
772	{	819	{
773	next->cctx = cctx_get ();	820	next->cctx = cctx_get (aTHX);
774	assert (!next->cctx->inuse);	821	assert (!next->cctx->inuse);
775	next->cctx->inuse = 1;	822	next->cctx->inuse = 1;
776	}	823	}
777		824
778	if (prev__cctx != next->cctx)	825	if (prev__cctx != next->cctx)
…		…
780	prev__cctx->top_env = PL_top_env;	827	prev__cctx->top_env = PL_top_env;
781	PL_top_env = next->cctx->top_env;	828	PL_top_env = next->cctx->top_env;
782	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
783	}	830	}
784		831
785	free_coro_mortal ();	832	free_coro_mortal (aTHX);
786
787	UNLOCK;	833	UNLOCK;
788	}	834	}
789	}	835	}
790		836
791	struct transfer_args	837	struct transfer_args
792	{	838	{
793	struct coro prev, next;	839	struct coro prev, next;
794	};	840	};
795		841
796	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
797		843
		844	/ high level stuff ******************************************************/
		845
798	static void	846	static int
799	coro_state_destroy (struct coro *coro)	847	coro_state_destroy (pTHX_ struct coro *coro)
800	{	848	{
801	if (coro->refcnt--)	849	if (coro->flags & CF_DESTROYED)
802	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 */
803		864
804	if (coro->mainstack && coro->mainstack != main_mainstack)	865	if (coro->mainstack && coro->mainstack != main_mainstack)
805	{	866	{
806	struct coro temp;	867	struct coro temp;
		868
		869	assert (!(coro->flags & CF_RUNNING));
		870
807	Zero (&temp, 1, struct coro);	871	Zero (&temp, 1, struct coro);
808	temp.save = CORO_SAVE_ALL;	872	temp.save = CORO_SAVE_DEF;
809		873
810	if (coro->flags & CF_RUNNING)	874	if (coro->flags & CF_RUNNING)
811	croak ("FATAL: tried to destroy currently running coroutine");	875	croak ("FATAL: tried to destroy currently running coroutine");
812		876
813	save_perl (&temp);	877	save_perl (aTHX_ &temp);
814	load_perl (coro);	878	load_perl (aTHX_ coro);
815		879
816	coro_destroy_stacks ();	880	coro_destroy_stacks (aTHX);
817		881
818	load_perl (&temp); /* this will get rid of defsv etc.. */	882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
819		883
820	coro->mainstack = 0;	884	coro->mainstack = 0;
821	}	885	}
822		886
823	cctx_destroy (coro->cctx);	887	cctx_destroy (coro->cctx);
824	SvREFCNT_dec (coro->args);	888	SvREFCNT_dec (coro->args);
825	Safefree (coro);	889
		890	return 1;
826	}	891	}
827		892
828	static int	893	static int
829	coro_state_clear (pTHX_ SV sv, MAGIC mg)	894	coro_state_free (pTHX_ SV sv, MAGIC mg)
830	{	895	{
831	struct coro coro = (struct coro )mg->mg_ptr;	896	struct coro coro = (struct coro )mg->mg_ptr;
832	mg->mg_ptr = 0;	897	mg->mg_ptr = 0;
833		898
		899	if (--coro->refcnt < 0)
		900	{
834	coro_state_destroy (coro);	901	coro_state_destroy (aTHX_ coro);
		902	Safefree (coro);
		903	}
835		904
836	return 0;	905	return 0;
837	}	906	}
838		907
839	static int	908	static int
…		…
846	return 0;	915	return 0;
847	}	916	}
848		917
849	static MGVTBL coro_state_vtbl = {	918	static MGVTBL coro_state_vtbl = {
850	0, 0, 0, 0,	919	0, 0, 0, 0,
851	coro_state_clear,	920	coro_state_free,
852	0,	921	0,
853	#ifdef MGf_DUP	922	#ifdef MGf_DUP
854	coro_state_dup,	923	coro_state_dup,
855	#else	924	#else
856	# define MGf_DUP 0	925	# define MGf_DUP 0
857	#endif	926	#endif
858	};	927	};
859		928
860	static struct coro *	929	static struct coro *
861	SvSTATE (SV *coro)	930	SvSTATE_ (pTHX_ SV *coro)
862	{	931	{
863	HV *stash;	932	HV *stash;
864	MAGIC *mg;	933	MAGIC *mg;
865		934
866	if (SvROK (coro))	935	if (SvROK (coro))
…		…
872	/* very slow, but rare, check */	941	/* very slow, but rare, check */
873	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
874	croak ("Coro::State object required");	943	croak ("Coro::State object required");
875	}	944	}
876		945
877	mg = SvMAGIC (coro);	946	mg = CORO_MAGIC (coro);
878	assert (mg->mg_type == PERL_MAGIC_ext);
879	return (struct coro *)mg->mg_ptr;	947	return (struct coro *)mg->mg_ptr;
880	}	948	}
881		949
		950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		951
882	static void	952	static void
883	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)
884	{	954	{
885	ta->prev = SvSTATE (prev_sv);	955	ta->prev = SvSTATE (prev_sv);
886	ta->next = SvSTATE (next_sv);	956	ta->next = SvSTATE (next_sv);
887	}	957	}
888		958
889	static void	959	static void
890	api_transfer (SV prev_sv, SV next_sv)	960	api_transfer (SV prev_sv, SV next_sv)
891	{	961	{
		962	dTHX;
892	struct transfer_args ta;	963	struct transfer_args ta;
893		964
894	prepare_transfer (&ta, prev_sv, next_sv);	965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
895	TRANSFER (ta);	966	TRANSFER (ta);
896	}	967	}
897		968
898	static int	969	static int
899	api_save (SV *coro_sv, int new_save)	970	api_save (SV *coro_sv, int new_save)
900	{	971	{
		972	dTHX;
901	struct coro *coro = SvSTATE (coro_sv);	973	struct coro *coro = SvSTATE (coro_sv);
902	int old_save = coro->save;	974	int old_save = coro->save;
903		975
904	if (new_save >= 0)	976	if (new_save >= 0)
905	coro->save = new_save;	977	coro->save = new_save;
…		…
907	return old_save;	979	return old_save;
908	}	980	}
909		981
910	/ Coro ******************************************************************/	982	/ Coro ******************************************************************/
911		983
912	#define PRIO_MAX 3
913	#define PRIO_HIGH 1
914	#define PRIO_NORMAL 0
915	#define PRIO_LOW -1
916	#define PRIO_IDLE -3
917	#define PRIO_MIN -4
918
919	/* for Coro.pm */
920	static SV *coro_current;
921	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
922	static int coro_nready;
923
924	static void	984	static void
925	coro_enq (SV *coro_sv)	985	coro_enq (pTHX_ SV *coro_sv)
926	{	986	{
927	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);
928	coro_nready++;
929	}	988	}
930		989
931	static SV *	990	static SV *
932	coro_deq (int min_prio)	991	coro_deq (pTHX_ int min_prio)
933	{	992	{
934	int prio = PRIO_MAX - PRIO_MIN;	993	int prio = PRIO_MAX - PRIO_MIN;
935		994
936	min_prio -= PRIO_MIN;	995	min_prio -= PRIO_MIN;
937	if (min_prio < 0)	996	if (min_prio < 0)
938	min_prio = 0;	997	min_prio = 0;
939		998
940	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	999	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
941	if (AvFILLp (coro_ready [prio]) >= 0)	1000	if (AvFILLp (coro_ready [prio]) >= 0)
942	{
943	coro_nready--;
944	return av_shift (coro_ready [prio]);	1001	return av_shift (coro_ready [prio]);
945	}
946		1002
947	return 0;	1003	return 0;
948	}	1004	}
949		1005
950	static int	1006	static int
951	api_ready (SV *coro_sv)	1007	api_ready (SV *coro_sv)
952	{	1008	{
		1009	dTHX;
953	struct coro *coro;	1010	struct coro *coro;
954		1011
955	if (SvROK (coro_sv))	1012	if (SvROK (coro_sv))
956	coro_sv = SvRV (coro_sv);	1013	coro_sv = SvRV (coro_sv);
957		1014
958	coro = SvSTATE (coro_sv);	1015	coro = SvSTATE (coro_sv);
959		1016
960	if (coro->flags & CF_READY)	1017	if (coro->flags & CF_READY)
961	return 0;	1018	return 0;
962		1019
963	#if 0 /* this is actually harmless */
964	if (coro->flags & CF_RUNNING)
965	croak ("Coro::ready called on currently running coroutine");
966	#endif
967
968	coro->flags \|= CF_READY;	1020	coro->flags \|= CF_READY;
969		1021
970	LOCK;	1022	LOCK;
971	coro_enq (SvREFCNT_inc (coro_sv));	1023	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1024	++coro_nready;
972	UNLOCK;	1025	UNLOCK;
973		1026
974	return 1;	1027	return 1;
975	}	1028	}
976		1029
977	static int	1030	static int
978	api_is_ready (SV *coro_sv)	1031	api_is_ready (SV *coro_sv)
979	{	1032	{
		1033	dTHX;
980	return !!SvSTATE (coro_sv)->flags & CF_READY;	1034	return !!(SvSTATE (coro_sv)->flags & CF_READY);
981	}	1035	}
982		1036
983	static void	1037	static void
984	prepare_schedule (struct transfer_args *ta)	1038	prepare_schedule (pTHX_ struct transfer_args *ta)
985	{	1039	{
986	SV prev, next;	1040	SV prev_sv, next_sv;
987		1041
988	for (;;)	1042	for (;;)
989	{	1043	{
990	LOCK;	1044	LOCK;
991	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;
992	UNLOCK;	1077	UNLOCK;
993
994	if (next)
995	break;	1078	break;
996
997	{
998	dSP;
999
1000	ENTER;
1001	SAVETMPS;
1002
1003	PUSHMARK (SP);
1004	PUTBACK;
1005	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1006
1007	FREETMPS;
1008	LEAVE;
1009	}	1079	}
1010	}
1011
1012	prev = SvRV (coro_current);
1013	SvRV_set (coro_current, next);
1014		1080
1015	/* free this only after the transfer */	1081	/* free this only after the transfer */
1016	LOCK;	1082	prev_sv = SvRV (coro_current);
1017	free_coro_mortal ();	1083	SvRV_set (coro_current, next_sv);
1018	UNLOCK;
1019	coro_mortal = prev;
1020
1021	assert (!SvROK(prev));//D
1022	assert (!SvROK(next));//D
1023
1024	ta->prev = SvSTATE (prev);	1084	ta->prev = SvSTATE (prev_sv);
1025	ta->next = SvSTATE (next);
1026		1085
1027	assert (ta->next->flags & CF_READY);	1086	assert (ta->next->flags & CF_READY);
1028	ta->next->flags &= ~CF_READY;	1087	ta->next->flags &= ~CF_READY;
1029	}
1030		1088
		1089	LOCK;
		1090	free_coro_mortal (aTHX);
		1091	coro_mortal = prev_sv;
		1092	UNLOCK;
		1093	}
		1094
1031	static void	1095	static void
1032	prepare_cede (struct transfer_args *ta)	1096	prepare_cede (pTHX_ struct transfer_args *ta)
1033	{	1097	{
1034	api_ready (coro_current);	1098	api_ready (coro_current);
1035
1036	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;
1037	}	1114	}
1038		1115
1039	static void	1116	static void
1040	api_schedule (void)	1117	api_schedule (void)
1041	{	1118	{
		1119	dTHX;
1042	struct transfer_args ta;	1120	struct transfer_args ta;
1043		1121
1044	prepare_schedule (&ta);	1122	prepare_schedule (aTHX_ &ta);
1045	TRANSFER (ta);	1123	TRANSFER (ta);
1046	}	1124	}
1047		1125
1048	static void	1126	static int
1049	api_cede (void)	1127	api_cede (void)
1050	{	1128	{
		1129	dTHX;
1051	struct transfer_args ta;	1130	struct transfer_args ta;
1052		1131
1053	prepare_cede (&ta);	1132	prepare_cede (aTHX_ &ta);
		1133
		1134	if (ta.prev != ta.next)
		1135	{
1054	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;
1055	}	1156	}
1056		1157
1057	MODULE = Coro::State PACKAGE = Coro::State	1158	MODULE = Coro::State PACKAGE = Coro::State
1058		1159
1059	PROTOTYPES: DISABLE	1160	PROTOTYPES: DISABLE
…		…
1069		1170
1070	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1071	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1072	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1073	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));
1074	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1075		1178
1076	main_mainstack = PL_mainstack;	1179	main_mainstack = PL_mainstack;
1077		1180
1078	coroapi.ver = CORO_API_VERSION;	1181	coroapi.ver = CORO_API_VERSION;
…		…
1089	HV *hv;	1192	HV *hv;
1090	int i;	1193	int i;
1091		1194
1092	Newz (0, coro, 1, struct coro);	1195	Newz (0, coro, 1, struct coro);
1093	coro->args = newAV ();	1196	coro->args = newAV ();
1094	coro->save = CORO_SAVE_ALL;	1197	coro->save = CORO_SAVE_DEF;
1095	coro->flags = CF_NEW;	1198	coro->flags = CF_NEW;
1096		1199
1097	hv = newHV ();	1200	hv = newHV ();
1098	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;
1099	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
…		…
1109	CODE:	1212	CODE:
1110	RETVAL = api_save (coro, new_save);	1213	RETVAL = api_save (coro, new_save);
1111	OUTPUT:	1214	OUTPUT:
1112	RETVAL	1215	RETVAL
1113		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
1114	void	1228	void
1115	_set_stacklevel (...)	1229	_set_stacklevel (...)
1116	ALIAS:	1230	ALIAS:
1117	Coro::State::transfer = 1	1231	Coro::State::transfer = 1
1118	Coro::schedule = 2	1232	Coro::schedule = 2
1119	Coro::cede = 3	1233	Coro::cede = 3
		1234	Coro::cede_notself = 4
1120	CODE:	1235	CODE:
1121	{	1236	{
1122	struct transfer_args ta;	1237	struct transfer_args ta;
1123		1238
1124	switch (ix)	1239	switch (ix)
…		…
1130		1245
1131	case 1:	1246	case 1:
1132	if (items != 2)	1247	if (items != 2)
1133	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);
1134		1249
1135	prepare_transfer (&ta, ST (0), ST (1));	1250	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1136	break;	1251	break;
1137		1252
1138	case 2:	1253	case 2:
1139	prepare_schedule (&ta);	1254	prepare_schedule (aTHX_ &ta);
1140	break;	1255	break;
1141		1256
1142	case 3:	1257	case 3:
1143	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
1144	break;	1265	break;
1145	}	1266	}
1146		1267
		1268	BARRIER;
1147	TRANSFER (ta);	1269	TRANSFER (ta);
1148	}
1149		1270
1150	void	1271	if (GIMME_V != G_VOID && ta.next != ta.prev)
1151	_clone_state_from (SV dst, SV src)	1272	XSRETURN_YES;
		1273	}
		1274
		1275	bool
		1276	_destroy (SV *coro_sv)
1152	CODE:	1277	CODE:
1153	{	1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1154	struct coro *coro_src = SvSTATE (src);	1279	OUTPUT:
1155		1280	RETVAL
1156	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1157
1158	++coro_src->refcnt;
1159	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1160	}
1161		1281
1162	void	1282	void
1163	_exit (code)	1283	_exit (code)
1164	int code	1284	int code
1165	PROTOTYPE: $	1285	PROTOTYPE: $
1166	CODE:	1286	CODE:
1167	_exit (code);	1287	_exit (code);
1168		1288
1169	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
1170	cctx_count ()	1299	cctx_count ()
1171	CODE:	1300	CODE:
1172	RETVAL = cctx_count;	1301	RETVAL = cctx_count;
1173	OUTPUT:	1302	OUTPUT:
1174	RETVAL	1303	RETVAL
…		…
1202	coro_ready[i] = newAV ();	1331	coro_ready[i] = newAV ();
1203		1332
1204	{	1333	{
1205	SV *sv = perl_get_sv("Coro::API", 1);	1334	SV *sv = perl_get_sv("Coro::API", 1);
1206		1335
1207	coroapi.schedule = api_schedule;	1336	coroapi.schedule = api_schedule;
1208	coroapi.save = api_save;	1337	coroapi.save = api_save;
1209	coroapi.cede = api_cede;	1338	coroapi.cede = api_cede;
		1339	coroapi.cede_notself = api_cede_notself;
1210	coroapi.ready = api_ready;	1340	coroapi.ready = api_ready;
1211	coroapi.is_ready = api_is_ready;	1341	coroapi.is_ready = api_is_ready;
1212	coroapi.nready = &coro_nready;	1342	coroapi.nready = &coro_nready;
1213	coroapi.current = coro_current;	1343	coroapi.current = coro_current;
1214		1344
1215	GCoroAPI = &coroapi;	1345	GCoroAPI = &coroapi;
1216	sv_setiv (sv, (IV)&coroapi);	1346	sv_setiv (sv, (IV)&coroapi);
1217	SvREADONLY_on (sv);	1347	SvREADONLY_on (sv);
1218	}	1348	}
…		…
1234	RETVAL = coro->prio;	1364	RETVAL = coro->prio;
1235		1365
1236	if (items > 1)	1366	if (items > 1)
1237	{	1367	{
1238	if (ix)	1368	if (ix)
1239	newprio += coro->prio;	1369	newprio = coro->prio - newprio;
1240		1370
1241	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	1371	if (newprio < PRIO_MIN) newprio = PRIO_MIN;
1242	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	1372	if (newprio > PRIO_MAX) newprio = PRIO_MAX;
1243		1373
1244	coro->prio = newprio;	1374	coro->prio = newprio;
1245	}	1375	}
1246	}	1376	}
		1377	OUTPUT:
		1378	RETVAL
1247		1379
1248	SV *	1380	SV *
1249	ready (SV *self)	1381	ready (SV *self)
1250	PROTOTYPE: $	1382	PROTOTYPE: $
1251	CODE:	1383	CODE:

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Comparing Coro/Coro/State.xs (file contents): Revision 1.124 by root, Tue Dec 5 12:50:04 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 1.124 by root, Tue Dec 5 12:50:04 2006 UTC vs.
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC