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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.155 by root, Fri Sep 21 01:09:36 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
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	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)
38	#endif	43	#endif
39		44
40	/* the maximum number of idle cctx that will be pooled */	45	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	46	#define MAX_IDLE_CCTX 8
42		47
…		…
71	#ifndef SvRV_set	76	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	78	#endif
74		79
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	81	# undef CORO_STACKGUARD
77	#endif	82	#endif
78		83
79	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
81	#endif	86	#endif
82		87
83	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	91	#endif
87		92
88	/* 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
89	* 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
90	* and should be unique. */	95	* and should be unique. */
…		…
112	#else	117	#else
113	# define LOCK (void)0	118	# define LOCK (void)0
114	# define UNLOCK (void)0	119	# define UNLOCK (void)0
115	#endif	120	#endif
116		121
		122	/* helper storage struct for Coro::AIO */
117	struct io_state	123	struct io_state
118	{	124	{
119	int errorno;	125	int errorno;
120	I32 laststype;	126	I32 laststype;
121	int laststatval;	127	int laststatval;
122	Stat_t statcache;	128	Stat_t statcache;
123	};	129	};
124		130
		131	static size_t coro_stacksize = CORO_STACKSIZE;
125	static struct CoroAPI coroapi;	132	static struct CoroAPI coroapi;
126	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;
127	static HV coro_state_stash, coro_stash;	135	static HV coro_state_stash, coro_stash;
128	static SV coro_mortal; / will be freed after next transfer */	136	static SV coro_mortal; / will be freed after next transfer */
129		137
130	static struct coro_cctx *cctx_first;	138	static struct coro_cctx *cctx_first;
131	static int cctx_count, cctx_idle;	139	static int cctx_count, cctx_idle;
…		…
134	typedef struct coro_cctx {	142	typedef struct coro_cctx {
135	struct coro_cctx *next;	143	struct coro_cctx *next;
136		144
137	/* the stack */	145	/* the stack */
138	void *sptr;	146	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	147	size_t ssize;
140		148
141	/* cpu state */	149	/* cpu state */
142	void idle_sp; / sp of top-level transfer/schedule/cede call */	150	void idle_sp; / sp of top-level transfer/schedule/cede call */
143	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */	151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
144	JMPENV *top_env;	152	JMPENV *top_env;
145	coro_context cctx;	153	coro_context cctx;
146		154
147	int inuse;
148
149	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
150	int valgrind_id;	156	int valgrind_id;
151	#endif	157	#endif
		158	char inuse, mapped;
152	} coro_cctx;	159	} coro_cctx;
153		160
154	enum {	161	enum {
155	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
156	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
157	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 */
158	};	166	};
159		167
160	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
161	struct coro {	169	struct coro {
162	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
…		…
170		178
171	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
172	AV defav; / @_ */	180	AV defav; / @_ */
173	SV defsv; / $_ */	181	SV defsv; / $_ */
174	SV errsv; / $@ */	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
175	SV irssv; / $/ */	184	SV irssv; / $/ */
176	SV irssv_sv; / real $/ cache */	185	SV irssv_sv; / real $/ cache */
177		186
178	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
179	# include "state.h"	188	# include "state.h"
180	#undef VAR	189	#undef VAR
181		190
182	/* coro process data */	191	/* coro process data */
183	int prio;	192	int prio;
		193
		194	/* linked list */
		195	struct coro next, prev;
		196	HV hv; / the perl hash associated with this coro, if any */
184	};	197	};
185		198
186	typedef struct coro *Coro__State;	199	typedef struct coro *Coro__State;
187	typedef struct coro *Coro__State_or_hashref;	200	typedef struct coro *Coro__State_or_hashref;
188		201
		202	/ Coro ******************************************************************/
		203
		204	#define PRIO_MAX 3
		205	#define PRIO_HIGH 1
		206	#define PRIO_NORMAL 0
		207	#define PRIO_LOW -1
		208	#define PRIO_IDLE -3
		209	#define PRIO_MIN -4
		210
		211	/* for Coro.pm */
		212	static SV *coro_current;
		213	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		214	static int coro_nready;
		215	static struct coro *coro_first;
		216
		217	/ lowlevel stuff ********************************************************/
		218
189	static AV *	219	static AV *
190	coro_clone_padlist (CV *cv)	220	coro_clone_padlist (pTHX_ CV *cv)
191	{	221	{
192	AV *padlist = CvPADLIST (cv);	222	AV *padlist = CvPADLIST (cv);
193	AV newpadlist, newpad;	223	AV newpadlist, newpad;
194		224
195	newpadlist = newAV ();	225	newpadlist = newAV ();
…		…
207		237
208	return newpadlist;	238	return newpadlist;
209	}	239	}
210		240
211	static void	241	static void
212	free_padlist (AV *padlist)	242	free_padlist (pTHX_ AV *padlist)
213	{	243	{
214	/* may be during global destruction */	244	/* may be during global destruction */
215	if (SvREFCNT (padlist))	245	if (SvREFCNT (padlist))
216	{	246	{
217	I32 i = AvFILLp (padlist);	247	I32 i = AvFILLp (padlist);
…		…
238	AV *padlist;	268	AV *padlist;
239	AV av = (AV )mg->mg_obj;	269	AV av = (AV )mg->mg_obj;
240		270
241	/* casting is fun. */	271	/* casting is fun. */
242	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
243	free_padlist (padlist);	273	free_padlist (aTHX_ padlist);
244		274
245	SvREFCNT_dec (av);	275	SvREFCNT_dec (av);
246		276
247	return 0;	277	return 0;
248	}	278	}
…		…
258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
259	: 0	289	: 0
260		290
261	/* the next two functions merely cache the padlists */	291	/* the next two functions merely cache the padlists */
262	static void	292	static void
263	get_padlist (CV *cv)	293	get_padlist (pTHX_ CV *cv)
264	{	294	{
265	MAGIC *mg = CORO_MAGIC (cv);	295	MAGIC *mg = CORO_MAGIC (cv);
266	AV *av;	296	AV *av;
267		297
268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
270	else	300	else
271	{	301	{
272	#if PREFER_PERL_FUNCTIONS	302	#if CORO_PREFER_PERL_FUNCTIONS
273	/* this is probably cleaner, but also slower? */	303	/* this is probably cleaner, but also slower? */
274	CV *cp = Perl_cv_clone (cv);	304	CV *cp = Perl_cv_clone (cv);
275	CvPADLIST (cv) = CvPADLIST (cp);	305	CvPADLIST (cv) = CvPADLIST (cp);
276	CvPADLIST (cp) = 0;	306	CvPADLIST (cp) = 0;
277	SvREFCNT_dec (cp);	307	SvREFCNT_dec (cp);
278	#else	308	#else
279	CvPADLIST (cv) = coro_clone_padlist (cv);	309	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
280	#endif	310	#endif
281	}	311	}
282	}	312	}
283		313
284	static void	314	static void
285	put_padlist (CV *cv)	315	put_padlist (pTHX_ CV *cv)
286	{	316	{
287	MAGIC *mg = CORO_MAGIC (cv);	317	MAGIC *mg = CORO_MAGIC (cv);
288	AV *av;	318	AV *av;
289		319
290	if (!mg)	320	if (!mg)
…		…
301	av_extend (av, AvMAX (av) + 1);	331	av_extend (av, AvMAX (av) + 1);
302		332
303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
304	}	334	}
305		335
		336	/ load & save, init *****************************************************/
		337
306	#define SB do {	338	#define SB do {
307	#define SE } while (0)	339	#define SE } while (0)
308		340
309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	341	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
310		342
311	static void	343	static void
312	load_perl (Coro__State c)	344	load_perl (pTHX_ Coro__State c)
313	{	345	{
314	#define VAR(name,type) PL_ ## name = c->name;	346	#define VAR(name,type) PL_ ## name = c->name;
315	# include "state.h"	347	# include "state.h"
316	#undef VAR	348	#undef VAR
317		349
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	352	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		353	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		354
321	if (c->irssv)	355	if (c->irssv)
322	{	356	{
323	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		358	{
324	SvREFCNT_dec (c->irssv);	359	SvREFCNT_dec (c->irssv);
		360	c->irssv = 0;
		361	}
325	else	362	else
326	{	363	{
327	REPLACE_SV (PL_rs, c->irssv);	364	REPLACE_SV (PL_rs, c->irssv);
328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
329	sv_setsv (c->irssv_sv, PL_rs);	366	sv_setsv (c->irssv_sv, PL_rs);
…		…
335	CV *cv;	372	CV *cv;
336		373
337	/* now do the ugly restore mess */	374	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	375	while ((cv = (CV *)POPs))
339	{	376	{
340	put_padlist (cv); /* mark this padlist as available */	377	put_padlist (aTHX_ cv); /* mark this padlist as available */
341	CvDEPTH (cv) = PTR2IV (POPs);	378	CvDEPTH (cv) = PTR2IV (POPs);
342	CvPADLIST (cv) = (AV *)POPs;	379	CvPADLIST (cv) = (AV *)POPs;
343	}	380	}
344		381
345	PUTBACK;	382	PUTBACK;
346	}	383	}
347	}	384	}
348		385
349	static void	386	static void
350	save_perl (Coro__State c)	387	save_perl (pTHX_ Coro__State c)
351	{	388	{
352	{	389	{
353	dSP;	390	dSP;
354	I32 cxix = cxstack_ix;	391	I32 cxix = cxstack_ix;
355	PERL_CONTEXT *ccstk = cxstack;	392	PERL_CONTEXT *ccstk = cxstack;
…		…
367	{	404	{
368	while (cxix >= 0)	405	while (cxix >= 0)
369	{	406	{
370	PERL_CONTEXT *cx = &ccstk[cxix--];	407	PERL_CONTEXT *cx = &ccstk[cxix--];
371		408
372	if (CxTYPE (cx) == CXt_SUB)	409	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
373	{	410	{
374	CV *cv = cx->blk_sub.cv;	411	CV *cv = cx->blk_sub.cv;
375		412
376	if (CvDEPTH (cv))	413	if (CvDEPTH (cv))
377	{	414	{
…		…
379	PUSHs ((SV *)CvPADLIST (cv));	416	PUSHs ((SV *)CvPADLIST (cv));
380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	418	PUSHs ((SV *)cv);
382		419
383	CvDEPTH (cv) = 0;	420	CvDEPTH (cv) = 0;
384	get_padlist (cv);	421	get_padlist (aTHX_ cv);
385	}	422	}
386	}	423	}
387	}	424	}
388		425
389	if (top_si->si_type == PERLSI_MAIN)	426	if (top_si->si_type == PERLSI_MAIN)
…		…
398	}	435	}
399		436
400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	437	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	439	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		440	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	441	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
404		442
405	#define VAR(name,type)c->name = PL_ ## name;	443	#define VAR(name,type)c->name = PL_ ## name;
406	# include "state.h"	444	# include "state.h"
407	#undef VAR	445	#undef VAR
…		…
411	* allocate various perl stacks. This is an exact copy	449	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	450	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	451	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	452	* not usually need a lot of stackspace.
415	*/	453	*/
416	#if PREFER_PERL_FUNCTIONS	454	#if CORO_PREFER_PERL_FUNCTIONS
417	# define coro_init_stacks init_stacks	455	# define coro_init_stacks init_stacks
418	#else	456	#else
419	static void	457	static void
420	coro_init_stacks ()	458	coro_init_stacks (pTHX)
421	{	459	{
422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	460	PL_curstackinfo = new_stackinfo(64, 4);
423	PL_curstackinfo->si_type = PERLSI_MAIN;	461	PL_curstackinfo->si_type = PERLSI_MAIN;
424	PL_curstack = PL_curstackinfo->si_stack;	462	PL_curstack = PL_curstackinfo->si_stack;
425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
426		464
427	PL_stack_base = AvARRAY(PL_curstack);	465	PL_stack_base = AvARRAY(PL_curstack);
428	PL_stack_sp = PL_stack_base;	466	PL_stack_sp = PL_stack_base;
429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
430		468
431	New(50,PL_tmps_stack,128,SV*);	469	New(50,PL_tmps_stack,64,SV*);
432	PL_tmps_floor = -1;	470	PL_tmps_floor = -1;
433	PL_tmps_ix = -1;	471	PL_tmps_ix = -1;
434	PL_tmps_max = 128;	472	PL_tmps_max = 64;
435		473
436	New(54,PL_markstack,32,I32);	474	New(54,PL_markstack,16,I32);
437	PL_markstack_ptr = PL_markstack;	475	PL_markstack_ptr = PL_markstack;
438	PL_markstack_max = PL_markstack + 32;	476	PL_markstack_max = PL_markstack + 16;
439		477
440	#ifdef SET_MARK_OFFSET	478	#ifdef SET_MARK_OFFSET
441	SET_MARK_OFFSET;	479	SET_MARK_OFFSET;
442	#endif	480	#endif
443		481
444	New(54,PL_scopestack,32,I32);	482	New(54,PL_scopestack,16,I32);
445	PL_scopestack_ix = 0;	483	PL_scopestack_ix = 0;
446	PL_scopestack_max = 32;	484	PL_scopestack_max = 16;
447		485
448	New(54,PL_savestack,64,ANY);	486	New(54,PL_savestack,64,ANY);
449	PL_savestack_ix = 0;	487	PL_savestack_ix = 0;
450	PL_savestack_max = 64;	488	PL_savestack_max = 64;
451		489
452	#if !PERL_VERSION_ATLEAST (5,9,0)	490	#if !PERL_VERSION_ATLEAST (5,9,0)
453	New(54,PL_retstack,16,OP*);	491	New(54,PL_retstack,8,OP*);
454	PL_retstack_ix = 0;	492	PL_retstack_ix = 0;
455	PL_retstack_max = 16;	493	PL_retstack_max = 8;
456	#endif	494	#endif
457	}	495	}
458	#endif	496	#endif
459		497
460	/*	498	/*
461	* destroy the stacks, the callchain etc...	499	* destroy the stacks, the callchain etc...
462	*/	500	*/
463	static void	501	static void
464	coro_destroy_stacks ()	502	coro_destroy_stacks (pTHX)
465	{	503	{
466	if (!IN_DESTRUCT)	504	if (!IN_DESTRUCT)
467	{	505	{
468	/* restore all saved variables and stuff */	506	/* restore all saved variables and stuff */
469	LEAVE_SCOPE (0);	507	LEAVE_SCOPE (0);
…		…
471		509
472	/* free all temporaries */	510	/* free all temporaries */
473	FREETMPS;	511	FREETMPS;
474	assert (PL_tmps_ix == -1);	512	assert (PL_tmps_ix == -1);
475		513
		514	/* unwind all extra stacks */
476	POPSTACK_TO (PL_mainstack);	515	POPSTACK_TO (PL_mainstack);
		516
		517	/* unwind main stack */
		518	dounwind (-1);
477	}	519	}
478		520
479	while (PL_curstackinfo->si_next)	521	while (PL_curstackinfo->si_next)
480	PL_curstackinfo = PL_curstackinfo->si_next;	522	PL_curstackinfo = PL_curstackinfo->si_next;
481		523
…		…
498	#if !PERL_VERSION_ATLEAST (5,9,0)	540	#if !PERL_VERSION_ATLEAST (5,9,0)
499	Safefree (PL_retstack);	541	Safefree (PL_retstack);
500	#endif	542	#endif
501	}	543	}
502		544
		545	static size_t
		546	coro_rss (struct coro *coro)
		547	{
		548	size_t rss = sizeof (coro);
		549
		550	if (coro->mainstack)
		551	{
		552	if (coro->flags & CF_RUNNING)
		553	{
		554	#define VAR(name,type)coro->name = PL_ ## name;
		555	# include "state.h"
		556	#undef VAR
		557	}
		558
		559	rss += sizeof (coro->curstackinfo);
		560	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		561	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		562	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		563	rss += coro->tmps_max * sizeof (SV *);
		564	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		565	rss += coro->scopestack_max * sizeof (I32);
		566	rss += coro->savestack_max * sizeof (ANY);
		567
		568	#if !PERL_VERSION_ATLEAST (5,9,0)
		569	rss += coro->retstack_max * sizeof (OP *);
		570	#endif
		571	}
		572
		573	return rss;
		574	}
		575
		576	/ coroutine stack handling **********************************************/
		577
503	static void	578	static void
504	setup_coro (struct coro *coro)	579	setup_coro (pTHX_ struct coro *coro)
505	{	580	{
506	/*	581	/*
507	* emulate part of the perl startup here.	582	* emulate part of the perl startup here.
508	*/	583	*/
509
510	coro_init_stacks ();	584	coro_init_stacks (aTHX);
511		585
512	PL_curcop = &PL_compiling;	586	PL_curcop = &PL_compiling;
513	PL_in_eval = EVAL_NULL;	587	PL_in_eval = EVAL_NULL;
		588	PL_comppad = 0;
514	PL_curpm = 0;	589	PL_curpm = 0;
515	PL_localizing = 0;	590	PL_localizing = 0;
516	PL_dirty = 0;	591	PL_dirty = 0;
517	PL_restartop = 0;	592	PL_restartop = 0;
518		593
…		…
526	Zero (&myop, 1, LOGOP);	601	Zero (&myop, 1, LOGOP);
527	myop.op_next = Nullop;	602	myop.op_next = Nullop;
528	myop.op_flags = OPf_WANT_VOID;	603	myop.op_flags = OPf_WANT_VOID;
529		604
530	PUSHMARK (SP);	605	PUSHMARK (SP);
531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	606	XPUSHs (av_shift (GvAV (PL_defgv)));
532	PUTBACK;	607	PUTBACK;
533	PL_op = (OP *)&myop;	608	PL_op = (OP *)&myop;
534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	609	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	610	SPAGAIN;
536	}	611	}
537		612
538	ENTER; /* necessary e.g. for dounwind */	613	ENTER; /* necessary e.g. for dounwind */
539	}	614	}
540		615
541	static void	616	static void
542	free_coro_mortal ()	617	free_coro_mortal (pTHX)
543	{	618	{
544	if (coro_mortal)	619	if (coro_mortal)
545	{	620	{
546	SvREFCNT_dec (coro_mortal);	621	SvREFCNT_dec (coro_mortal);
547	coro_mortal = 0;	622	coro_mortal = 0;
548	}	623	}
549	}	624	}
550		625
551	/* inject a fake call to Coro::State::_cctx_init into the execution */	626	/* inject a fake call to Coro::State::_cctx_init into the execution */
		627	/* _cctx_init should be careful, as it could be called at almost any time */
		628	/* during execution of a perl program */
552	static void NOINLINE	629	static void NOINLINE
553	prepare_cctx (coro_cctx *cctx)	630	prepare_cctx (pTHX_ coro_cctx *cctx)
554	{	631	{
555	dSP;	632	dSP;
556	LOGOP myop;	633	LOGOP myop;
557		634
558	Zero (&myop, 1, LOGOP);	635	Zero (&myop, 1, LOGOP);
…		…
567	PL_op = (OP *)&myop;	644	PL_op = (OP *)&myop;
568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
569	SPAGAIN;	646	SPAGAIN;
570	}	647	}
571		648
		649	/*
		650	* this is a _very_ stripped down perl interpreter ;)
		651	*/
572	static void	652	static void
573	coro_run (void *arg)	653	coro_run (void *arg)
574	{	654	{
		655	dTHX;
		656
575	/* coro_run is the alternative tail of transfer(), so unlock here. */	657	/* coro_run is the alternative tail of transfer(), so unlock here. */
576	UNLOCK;	658	UNLOCK;
577		659
578	/*
579	* this is a _very_ stripped down perl interpreter ;)
580	*/
581	PL_top_env = &PL_start_env;	660	PL_top_env = &PL_start_env;
582		661
583	/* inject call to cctx_init */	662	/* inject a fake subroutine call to cctx_init */
584	prepare_cctx ((coro_cctx *)arg);	663	prepare_cctx (aTHX_ (coro_cctx *)arg);
585		664
586	/* somebody will hit me for both perl_run and PL_restartop */	665	/* somebody or something will hit me for both perl_run and PL_restartop */
587	PL_restartop = PL_op;	666	PL_restartop = PL_op;
588	perl_run (PL_curinterp);	667	perl_run (PL_curinterp);
589		668
590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	669	/*
591	abort ();	670	* If perl-run returns we assume exit() was being called or the coro
		671	* fell off the end, which seems to be the only valid (non-bug)
		672	* reason for perl_run to return. We try to exit by jumping to the
		673	* bootstrap-time "top" top_env, as we cannot restore the "main"
		674	* coroutine as Coro has no such concept
		675	*/
		676	PL_top_env = main_top_env;
		677	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
592	}	678	}
593		679
594	static coro_cctx *	680	static coro_cctx *
595	cctx_new ()	681	cctx_new ()
596	{	682	{
597	coro_cctx *cctx;	683	coro_cctx *cctx;
		684	void *stack_start;
		685	size_t stack_size;
598		686
599	++cctx_count;	687	++cctx_count;
600		688
601	Newz (0, cctx, 1, coro_cctx);	689	Newz (0, cctx, 1, coro_cctx);
602		690
603	#if HAVE_MMAP	691	#if HAVE_MMAP
604		692
605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	693	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
606	/* mmap supposedly does allocate-on-write for us */	694	/* mmap supposedly does allocate-on-write for us */
607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	695	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
608		696
609	if (cctx->sptr == (void *)-1)	697	if (cctx->sptr != (void *)-1)
610	{
611	perror ("FATAL: unable to mmap stack for coroutine");
612	_exit (EXIT_FAILURE);
613	}	698	{
614
615	# if STACKGUARD	699	# if CORO_STACKGUARD
616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	700	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
617	# endif	701	# endif
		702	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		703	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		704	cctx->mapped = 1;
		705	}
		706	else
		707	#endif
		708	{
		709	cctx->ssize = coro_stacksize * (long)sizeof (long);
		710	New (0, cctx->sptr, coro_stacksize, long);
618		711
619	#else
620
621	cctx->ssize = STACKSIZE * (long)sizeof (long);
622	New (0, cctx->sptr, STACKSIZE, long);
623
624	if (!cctx->sptr)	712	if (!cctx->sptr)
625	{	713	{
626	perror ("FATAL: unable to malloc stack for coroutine");	714	perror ("FATAL: unable to allocate stack for coroutine");
627	_exit (EXIT_FAILURE);	715	_exit (EXIT_FAILURE);
628	}	716	}
629		717
630	#endif	718	stack_start = cctx->sptr;
		719	stack_size = cctx->ssize;
		720	}
631		721
632	#if USE_VALGRIND	722	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
633	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
634	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
635	cctx->ssize + (char *)cctx->sptr
636	);
637	#endif
638
639	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	723	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
640		724
641	return cctx;	725	return cctx;
642	}	726	}
643		727
644	static void	728	static void
…		…
647	if (!cctx)	731	if (!cctx)
648	return;	732	return;
649		733
650	--cctx_count;	734	--cctx_count;
651		735
652	#if USE_VALGRIND	736	#if CORO_USE_VALGRIND
653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	737	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
654	#endif	738	#endif
655		739
656	#if HAVE_MMAP	740	#if HAVE_MMAP
		741	if (cctx->mapped)
657	munmap (cctx->sptr, cctx->ssize);	742	munmap (cctx->sptr, cctx->ssize);
658	#else	743	else
		744	#endif
659	Safefree (cctx->sptr);	745	Safefree (cctx->sptr);
660	#endif
661		746
662	Safefree (cctx);	747	Safefree (cctx);
663	}	748	}
664		749
665	static coro_cctx *	750	static coro_cctx *
666	cctx_get ()	751	cctx_get (pTHX)
667	{	752	{
668	coro_cctx *cctx;
669
670	if (cctx_first)	753	while (cctx_first)
671	{	754	{
672	cctx = cctx_first;	755	coro_cctx *cctx = cctx_first;
673	cctx_first = cctx->next;	756	cctx_first = cctx->next;
674	--cctx_idle;	757	--cctx_idle;
		758
		759	if (cctx->ssize >= coro_stacksize)
		760	return cctx;
		761
		762	cctx_destroy (cctx);
675	}	763	}
676	else	764
677	{
678	cctx = cctx_new ();
679	PL_op = PL_op->op_next;	765	PL_op = PL_op->op_next;
680	}
681
682	return cctx;	766	return cctx_new ();
683	}	767	}
684		768
685	static void	769	static void
686	cctx_put (coro_cctx *cctx)	770	cctx_put (coro_cctx *cctx)
687	{	771	{
…		…
699	++cctx_idle;	783	++cctx_idle;
700	cctx->next = cctx_first;	784	cctx->next = cctx_first;
701	cctx_first = cctx;	785	cctx_first = cctx;
702	}	786	}
703		787
		788	/ coroutine switching ***************************************************/
		789
704	/* never call directly, always through the coro_state_transfer global variable */	790	/* never call directly, always through the coro_state_transfer global variable */
705	static void NOINLINE	791	static void NOINLINE
706	transfer (struct coro prev, struct coro next)	792	transfer (pTHX_ struct coro prev, struct coro next)
707	{	793	{
708	dSTACKLEVEL;	794	dSTACKLEVEL;
709		795
710	/* sometimes transfer is only called to set idle_sp */	796	/* sometimes transfer is only called to set idle_sp */
711	if (!next)	797	if (!next)
…		…
731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	817	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
732		818
733	if (next->flags & CF_RUNNING)	819	if (next->flags & CF_RUNNING)
734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	820	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
735		821
		822	if (next->flags & CF_DESTROYED)
		823	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		824
736	prev->flags &= ~CF_RUNNING;	825	prev->flags &= ~CF_RUNNING;
737	next->flags \|= CF_RUNNING;	826	next->flags \|= CF_RUNNING;
738		827
739	LOCK;	828	LOCK;
740		829
741	if (next->flags & CF_NEW)	830	if (next->flags & CF_NEW)
742	{	831	{
743	/* need to start coroutine */	832	/* need to start coroutine */
744	next->flags &= ~CF_NEW;	833	next->flags &= ~CF_NEW;
745	/* first get rid of the old state */	834	/* first get rid of the old state */
746	save_perl (prev);	835	save_perl (aTHX_ prev);
747	/* setup coroutine call */	836	/* setup coroutine call */
748	setup_coro (next);	837	setup_coro (aTHX_ next);
749	/* need a new stack */	838	/* need a new stack */
750	assert (!next->cctx);	839	assert (!next->cctx);
751	}	840	}
752	else	841	else
753	{	842	{
754	/* coroutine already started */	843	/* coroutine already started */
755	save_perl (prev);	844	save_perl (aTHX_ prev);
756	load_perl (next);	845	load_perl (aTHX_ next);
757	}	846	}
758		847
759	prev__cctx = prev->cctx;	848	prev__cctx = prev->cctx;
760		849
761	/* possibly "free" the cctx */	850	/* possibly "free" the cctx */
…		…
770	prev__cctx->inuse = 0;	859	prev__cctx->inuse = 0;
771	}	860	}
772		861
773	if (!next->cctx)	862	if (!next->cctx)
774	{	863	{
775	next->cctx = cctx_get ();	864	next->cctx = cctx_get (aTHX);
776	assert (!next->cctx->inuse);	865	assert (!next->cctx->inuse);
777	next->cctx->inuse = 1;	866	next->cctx->inuse = 1;
778	}	867	}
779		868
780	if (prev__cctx != next->cctx)	869	if (prev__cctx != next->cctx)
…		…
782	prev__cctx->top_env = PL_top_env;	871	prev__cctx->top_env = PL_top_env;
783	PL_top_env = next->cctx->top_env;	872	PL_top_env = next->cctx->top_env;
784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	873	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
785	}	874	}
786		875
787	free_coro_mortal ();	876	free_coro_mortal (aTHX);
788
789	UNLOCK;	877	UNLOCK;
790	}	878	}
791	}	879	}
792		880
793	struct transfer_args	881	struct transfer_args
794	{	882	{
795	struct coro prev, next;	883	struct coro prev, next;
796	};	884	};
797		885
798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	886	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
799		887
		888	/ high level stuff ******************************************************/
		889
800	static void	890	static int
801	coro_state_destroy (struct coro *coro)	891	coro_state_destroy (pTHX_ struct coro *coro)
802	{	892	{
803	if (coro->refcnt--)	893	if (coro->flags & CF_DESTROYED)
804	return;	894	return 0;
		895
		896	coro->flags \|= CF_DESTROYED;
		897
		898	if (coro->flags & CF_READY)
		899	{
		900	/* reduce nready, as destroying a ready coro effectively unreadies it */
		901	/* alternative: look through all ready queues and remove the coro */
		902	LOCK;
		903	--coro_nready;
		904	UNLOCK;
		905	}
		906	else
		907	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
805		908
806	if (coro->mainstack && coro->mainstack != main_mainstack)	909	if (coro->mainstack && coro->mainstack != main_mainstack)
807	{	910	{
808	struct coro temp;	911	struct coro temp;
		912
		913	assert (!(coro->flags & CF_RUNNING));
		914
809	Zero (&temp, 1, struct coro);	915	Zero (&temp, 1, struct coro);
810	temp.save = CORO_SAVE_ALL;	916	temp.save = CORO_SAVE_ALL;
811		917
812	if (coro->flags & CF_RUNNING)	918	if (coro->flags & CF_RUNNING)
813	croak ("FATAL: tried to destroy currently running coroutine");	919	croak ("FATAL: tried to destroy currently running coroutine");
814		920
815	save_perl (&temp);	921	save_perl (aTHX_ &temp);
816	load_perl (coro);	922	load_perl (aTHX_ coro);
817		923
818	coro_destroy_stacks ();	924	coro_destroy_stacks (aTHX);
819		925
820	load_perl (&temp); /* this will get rid of defsv etc.. */	926	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
821		927
822	coro->mainstack = 0;	928	coro->mainstack = 0;
823	}	929	}
824		930
825	cctx_destroy (coro->cctx);	931	cctx_destroy (coro->cctx);
826	SvREFCNT_dec (coro->args);	932	SvREFCNT_dec (coro->args);
827	Safefree (coro);	933
		934	if (coro->next) coro->next->prev = coro->prev;
		935	if (coro->prev) coro->prev->next = coro->next;
		936	if (coro == coro_first) coro_first = coro->next;
		937
		938	return 1;
828	}	939	}
829		940
830	static int	941	static int
831	coro_state_clear (pTHX_ SV sv, MAGIC mg)	942	coro_state_free (pTHX_ SV sv, MAGIC mg)
832	{	943	{
833	struct coro coro = (struct coro )mg->mg_ptr;	944	struct coro coro = (struct coro )mg->mg_ptr;
834	mg->mg_ptr = 0;	945	mg->mg_ptr = 0;
835		946
		947	coro->hv = 0;
		948
		949	if (--coro->refcnt < 0)
		950	{
836	coro_state_destroy (coro);	951	coro_state_destroy (aTHX_ coro);
		952	Safefree (coro);
		953	}
837		954
838	return 0;	955	return 0;
839	}	956	}
840		957
841	static int	958	static int
…		…
848	return 0;	965	return 0;
849	}	966	}
850		967
851	static MGVTBL coro_state_vtbl = {	968	static MGVTBL coro_state_vtbl = {
852	0, 0, 0, 0,	969	0, 0, 0, 0,
853	coro_state_clear,	970	coro_state_free,
854	0,	971	0,
855	#ifdef MGf_DUP	972	#ifdef MGf_DUP
856	coro_state_dup,	973	coro_state_dup,
857	#else	974	#else
858	# define MGf_DUP 0	975	# define MGf_DUP 0
859	#endif	976	#endif
860	};	977	};
861		978
862	static struct coro *	979	static struct coro *
863	SvSTATE (SV *coro)	980	SvSTATE_ (pTHX_ SV *coro)
864	{	981	{
865	HV *stash;	982	HV *stash;
866	MAGIC *mg;	983	MAGIC *mg;
867		984
868	if (SvROK (coro))	985	if (SvROK (coro))
…		…
874	/* very slow, but rare, check */	991	/* very slow, but rare, check */
875	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	992	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
876	croak ("Coro::State object required");	993	croak ("Coro::State object required");
877	}	994	}
878		995
879	mg = SvMAGIC (coro);	996	mg = CORO_MAGIC (coro);
880	assert (mg->mg_type == PERL_MAGIC_ext);
881	return (struct coro *)mg->mg_ptr;	997	return (struct coro *)mg->mg_ptr;
882	}	998	}
883		999
		1000	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1001
884	static void	1002	static void
885	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1003	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
886	{	1004	{
887	ta->prev = SvSTATE (prev_sv);	1005	ta->prev = SvSTATE (prev_sv);
888	ta->next = SvSTATE (next_sv);	1006	ta->next = SvSTATE (next_sv);
889	}	1007	}
890		1008
891	static void	1009	static void
892	api_transfer (SV prev_sv, SV next_sv)	1010	api_transfer (SV prev_sv, SV next_sv)
893	{	1011	{
		1012	dTHX;
894	struct transfer_args ta;	1013	struct transfer_args ta;
895		1014
896	prepare_transfer (&ta, prev_sv, next_sv);	1015	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
897	TRANSFER (ta);	1016	TRANSFER (ta);
898	}	1017	}
899		1018
900	static int	1019	static int
901	api_save (SV *coro_sv, int new_save)	1020	api_save (SV *coro_sv, int new_save)
902	{	1021	{
		1022	dTHX;
903	struct coro *coro = SvSTATE (coro_sv);	1023	struct coro *coro = SvSTATE (coro_sv);
904	int old_save = coro->save;	1024	int old_save = coro->save;
905		1025
906	if (new_save >= 0)	1026	if (new_save >= 0)
907	coro->save = new_save;	1027	coro->save = new_save;
…		…
909	return old_save;	1029	return old_save;
910	}	1030	}
911		1031
912	/ Coro ******************************************************************/	1032	/ Coro ******************************************************************/
913		1033
914	#define PRIO_MAX 3
915	#define PRIO_HIGH 1
916	#define PRIO_NORMAL 0
917	#define PRIO_LOW -1
918	#define PRIO_IDLE -3
919	#define PRIO_MIN -4
920
921	/* for Coro.pm */
922	static SV *coro_current;
923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
924	static int coro_nready;
925
926	static void	1034	static void
927	coro_enq (SV *coro_sv)	1035	coro_enq (pTHX_ SV *coro_sv)
928	{	1036	{
929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1037	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
930	coro_nready++;
931	}	1038	}
932		1039
933	static SV *	1040	static SV *
934	coro_deq (int min_prio)	1041	coro_deq (pTHX_ int min_prio)
935	{	1042	{
936	int prio = PRIO_MAX - PRIO_MIN;	1043	int prio = PRIO_MAX - PRIO_MIN;
937		1044
938	min_prio -= PRIO_MIN;	1045	min_prio -= PRIO_MIN;
939	if (min_prio < 0)	1046	if (min_prio < 0)
940	min_prio = 0;	1047	min_prio = 0;
941		1048
942	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1049	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
943	if (AvFILLp (coro_ready [prio]) >= 0)	1050	if (AvFILLp (coro_ready [prio]) >= 0)
944	{
945	coro_nready--;
946	return av_shift (coro_ready [prio]);	1051	return av_shift (coro_ready [prio]);
947	}
948		1052
949	return 0;	1053	return 0;
950	}	1054	}
951		1055
952	static int	1056	static int
953	api_ready (SV *coro_sv)	1057	api_ready (SV *coro_sv)
954	{	1058	{
		1059	dTHX;
955	struct coro *coro;	1060	struct coro *coro;
956		1061
957	if (SvROK (coro_sv))	1062	if (SvROK (coro_sv))
958	coro_sv = SvRV (coro_sv);	1063	coro_sv = SvRV (coro_sv);
959		1064
…		…
963	return 0;	1068	return 0;
964		1069
965	coro->flags \|= CF_READY;	1070	coro->flags \|= CF_READY;
966		1071
967	LOCK;	1072	LOCK;
968	coro_enq (SvREFCNT_inc (coro_sv));	1073	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1074	++coro_nready;
969	UNLOCK;	1075	UNLOCK;
970		1076
971	return 1;	1077	return 1;
972	}	1078	}
973		1079
974	static int	1080	static int
975	api_is_ready (SV *coro_sv)	1081	api_is_ready (SV *coro_sv)
976	{	1082	{
		1083	dTHX;
977	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1084	return !!(SvSTATE (coro_sv)->flags & CF_READY);
978	}	1085	}
979		1086
980	static void	1087	static void
981	prepare_schedule (struct transfer_args *ta)	1088	prepare_schedule (pTHX_ struct transfer_args *ta)
982	{	1089	{
983	SV prev, next;	1090	SV prev_sv, next_sv;
984		1091
985	for (;;)	1092	for (;;)
986	{	1093	{
987	LOCK;	1094	LOCK;
988	next = coro_deq (PRIO_MIN);	1095	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1096
		1097	/* nothing to schedule: call the idle handler */
		1098	if (!next_sv)
		1099	{
		1100	dSP;
		1101	UNLOCK;
		1102
		1103	ENTER;
		1104	SAVETMPS;
		1105
		1106	PUSHMARK (SP);
		1107	PUTBACK;
		1108	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1109
		1110	FREETMPS;
		1111	LEAVE;
		1112	continue;
		1113	}
		1114
		1115	ta->next = SvSTATE (next_sv);
		1116
		1117	/* cannot transfer to destroyed coros, skip and look for next */
		1118	if (ta->next->flags & CF_DESTROYED)
		1119	{
		1120	UNLOCK;
		1121	SvREFCNT_dec (next_sv);
		1122	/* coro_nready is already taken care of by destroy */
		1123	continue;
		1124	}
		1125
		1126	--coro_nready;
989	UNLOCK;	1127	UNLOCK;
990
991	if (next)
992	break;	1128	break;
993
994	{
995	dSP;
996
997	ENTER;
998	SAVETMPS;
999
1000	PUSHMARK (SP);
1001	PUTBACK;
1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1003
1004	FREETMPS;
1005	LEAVE;
1006	}	1129	}
1007	}
1008
1009	prev = SvRV (coro_current);
1010	SvRV_set (coro_current, next);
1011		1130
1012	/* free this only after the transfer */	1131	/* free this only after the transfer */
1013	LOCK;	1132	prev_sv = SvRV (coro_current);
1014	free_coro_mortal ();	1133	SvRV_set (coro_current, next_sv);
1015	UNLOCK;
1016	coro_mortal = prev;
1017
1018	assert (!SvROK(prev));//D
1019	assert (!SvROK(next));//D
1020
1021	ta->prev = SvSTATE (prev);	1134	ta->prev = SvSTATE (prev_sv);
1022	ta->next = SvSTATE (next);
1023		1135
1024	assert (ta->next->flags & CF_READY);	1136	assert (ta->next->flags & CF_READY);
1025	ta->next->flags &= ~CF_READY;	1137	ta->next->flags &= ~CF_READY;
1026	}
1027		1138
		1139	LOCK;
		1140	free_coro_mortal (aTHX);
		1141	coro_mortal = prev_sv;
		1142	UNLOCK;
		1143	}
		1144
1028	static void	1145	static void
1029	prepare_cede (struct transfer_args *ta)	1146	prepare_cede (pTHX_ struct transfer_args *ta)
1030	{	1147	{
1031	api_ready (coro_current);	1148	api_ready (coro_current);
1032	prepare_schedule (ta);	1149	prepare_schedule (aTHX_ ta);
1033	}	1150	}
1034		1151
1035	static int	1152	static int
1036	prepare_cede_notself (struct transfer_args *ta)	1153	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1037	{	1154	{
1038	if (coro_nready)	1155	if (coro_nready)
1039	{	1156	{
1040	SV *prev = SvRV (coro_current);	1157	SV *prev = SvRV (coro_current);
1041	prepare_schedule (ta);	1158	prepare_schedule (aTHX_ ta);
1042	api_ready (prev);	1159	api_ready (prev);
1043	return 1;	1160	return 1;
1044	}	1161	}
1045	else	1162	else
1046	return 0;	1163	return 0;
1047	}	1164	}
1048		1165
1049	static void	1166	static void
1050	api_schedule (void)	1167	api_schedule (void)
1051	{	1168	{
		1169	dTHX;
1052	struct transfer_args ta;	1170	struct transfer_args ta;
1053		1171
1054	prepare_schedule (&ta);	1172	prepare_schedule (aTHX_ &ta);
1055	TRANSFER (ta);	1173	TRANSFER (ta);
1056	}	1174	}
1057		1175
1058	static int	1176	static int
1059	api_cede (void)	1177	api_cede (void)
1060	{	1178	{
		1179	dTHX;
1061	struct transfer_args ta;	1180	struct transfer_args ta;
1062		1181
1063	prepare_cede (&ta);	1182	prepare_cede (aTHX_ &ta);
1064		1183
1065	if (ta.prev != ta.next)	1184	if (ta.prev != ta.next)
1066	{	1185	{
1067	TRANSFER (ta);	1186	TRANSFER (ta);
1068	return 1;	1187	return 1;
…		…
1072	}	1191	}
1073		1192
1074	static int	1193	static int
1075	api_cede_notself (void)	1194	api_cede_notself (void)
1076	{	1195	{
		1196	dTHX;
1077	struct transfer_args ta;	1197	struct transfer_args ta;
1078		1198
1079	if (prepare_cede_notself (&ta))	1199	if (prepare_cede_notself (aTHX_ &ta))
1080	{	1200	{
1081	TRANSFER (ta);	1201	TRANSFER (ta);
1082	return 1;	1202	return 1;
1083	}	1203	}
1084	else	1204	else
…		…
1100		1220
1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1221	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1222	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1223	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1224	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1225	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1226	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1227	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1106		1228
1107	main_mainstack = PL_mainstack;	1229	main_mainstack = PL_mainstack;
		1230	main_top_env = PL_top_env;
		1231
		1232	while (main_top_env->je_prev)
		1233	main_top_env = main_top_env->je_prev;
1108		1234
1109	coroapi.ver = CORO_API_VERSION;	1235	coroapi.ver = CORO_API_VERSION;
1110	coroapi.transfer = api_transfer;	1236	coroapi.transfer = api_transfer;
1111		1237
1112	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1238	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1120	HV *hv;	1246	HV *hv;
1121	int i;	1247	int i;
1122		1248
1123	Newz (0, coro, 1, struct coro);	1249	Newz (0, coro, 1, struct coro);
1124	coro->args = newAV ();	1250	coro->args = newAV ();
1125	coro->save = CORO_SAVE_ALL;	1251	coro->save = CORO_SAVE_DEF;
1126	coro->flags = CF_NEW;	1252	coro->flags = CF_NEW;
1127		1253
		1254	if (coro_first) coro_first->prev = coro;
		1255	coro->next = coro_first;
		1256	coro_first = coro;
		1257
1128	hv = newHV ();	1258	coro->hv = hv = newHV ();
1129	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1259	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1260	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1131		1261
1132	for (i = 1; i < items; i++)	1262	for (i = 1; i < items; i++)
1133	av_push (coro->args, newSVsv (ST (i)));	1263	av_push (coro->args, newSVsv (ST (i)));
…		…
1137		1267
1138	int	1268	int
1139	save (SV *coro, int new_save = -1)	1269	save (SV *coro, int new_save = -1)
1140	CODE:	1270	CODE:
1141	RETVAL = api_save (coro, new_save);	1271	RETVAL = api_save (coro, new_save);
		1272	OUTPUT:
		1273	RETVAL
		1274
		1275	int
		1276	save_also (SV *coro_sv, int save_also)
		1277	CODE:
		1278	{
		1279	struct coro *coro = SvSTATE (coro_sv);
		1280	RETVAL = coro->save;
		1281	coro->save \|= save_also;
		1282	}
1142	OUTPUT:	1283	OUTPUT:
1143	RETVAL	1284	RETVAL
1144		1285
1145	void	1286	void
1146	_set_stacklevel (...)	1287	_set_stacklevel (...)
…		…
1162		1303
1163	case 1:	1304	case 1:
1164	if (items != 2)	1305	if (items != 2)
1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1306	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1166		1307
1167	prepare_transfer (&ta, ST (0), ST (1));	1308	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1168	break;	1309	break;
1169		1310
1170	case 2:	1311	case 2:
1171	prepare_schedule (&ta);	1312	prepare_schedule (aTHX_ &ta);
1172	break;	1313	break;
1173		1314
1174	case 3:	1315	case 3:
1175	prepare_cede (&ta);	1316	prepare_cede (aTHX_ &ta);
1176	break;	1317	break;
1177		1318
1178	case 4:	1319	case 4:
1179	if (!prepare_cede_notself (&ta))	1320	if (!prepare_cede_notself (aTHX_ &ta))
1180	XSRETURN_EMPTY;	1321	XSRETURN_EMPTY;
1181		1322
1182	break;	1323	break;
1183	}	1324	}
1184		1325
1185	BARRIER;	1326	BARRIER;
1186	TRANSFER (ta);	1327	TRANSFER (ta);
1187	}
1188		1328
1189	void	1329	if (GIMME_V != G_VOID && ta.next != ta.prev)
1190	_clone_state_from (SV dst, SV src)	1330	XSRETURN_YES;
		1331	}
		1332
		1333	bool
		1334	_destroy (SV *coro_sv)
1191	CODE:	1335	CODE:
1192	{	1336	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1193	struct coro *coro_src = SvSTATE (src);	1337	OUTPUT:
1194		1338	RETVAL
1195	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1196
1197	++coro_src->refcnt;
1198	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1199	}
1200		1339
1201	void	1340	void
1202	_exit (code)	1341	_exit (code)
1203	int code	1342	int code
1204	PROTOTYPE: $	1343	PROTOTYPE: $
1205	CODE:	1344	CODE:
1206	_exit (code);	1345	_exit (code);
1207		1346
1208	int	1347	int
		1348	cctx_stacksize (int new_stacksize = 0)
		1349	CODE:
		1350	RETVAL = coro_stacksize;
		1351	if (new_stacksize)
		1352	coro_stacksize = new_stacksize;
		1353	OUTPUT:
		1354	RETVAL
		1355
		1356	int
1209	cctx_count ()	1357	cctx_count ()
1210	CODE:	1358	CODE:
1211	RETVAL = cctx_count;	1359	RETVAL = cctx_count;
1212	OUTPUT:	1360	OUTPUT:
1213	RETVAL	1361	RETVAL
…		…
1216	cctx_idle ()	1364	cctx_idle ()
1217	CODE:	1365	CODE:
1218	RETVAL = cctx_idle;	1366	RETVAL = cctx_idle;
1219	OUTPUT:	1367	OUTPUT:
1220	RETVAL	1368	RETVAL
		1369
		1370	void
		1371	list ()
		1372	PPCODE:
		1373	{
		1374	struct coro *coro;
		1375	for (coro = coro_first; coro; coro = coro->next)
		1376	if (coro->hv)
		1377	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1378	}
		1379
		1380	void
		1381	_eval (Coro::State coro, SV *coderef)
		1382	CODE:
		1383	{
		1384	if (coro->mainstack)
		1385	{
		1386	struct coro temp;
		1387	Zero (&temp, 1, struct coro);
		1388	temp.save = CORO_SAVE_ALL;
		1389
		1390	if (!(coro->flags & CF_RUNNING))
		1391	{
		1392	save_perl (aTHX_ &temp);
		1393	load_perl (aTHX_ coro);
		1394	}
		1395
		1396	{
		1397	dSP;
		1398	ENTER;
		1399	SAVETMPS;
		1400	PUSHMARK (SP);
		1401	PUTBACK;
		1402	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1403	SPAGAIN;
		1404	FREETMPS;
		1405	LEAVE;
		1406	PUTBACK;
		1407	}
		1408
		1409	if (!(coro->flags & CF_RUNNING))
		1410	{
		1411	save_perl (aTHX_ coro);
		1412	load_perl (aTHX_ &temp);
		1413	}
		1414	}
		1415	}
		1416
		1417	SV *
		1418	is_ready (Coro::State coro)
		1419	PROTOTYPE: $
		1420	ALIAS:
		1421	is_ready = CF_READY
		1422	is_running = CF_RUNNING
		1423	is_new = CF_NEW
		1424	is_destroyed = CF_DESTROYED
		1425	CODE:
		1426	RETVAL = boolSV (coro->flags & ix);
		1427	OUTPUT:
		1428	RETVAL
		1429
		1430	IV
		1431	rss (Coro::State coro)
		1432	PROTOTYPE: $
		1433	CODE:
		1434	RETVAL = coro_rss (coro);
		1435	OUTPUT:
		1436	RETVAL
		1437
1221		1438
1222	MODULE = Coro::State PACKAGE = Coro	1439	MODULE = Coro::State PACKAGE = Coro
1223		1440
1224	BOOT:	1441	BOOT:
1225	{	1442	{
…		…
1293	CODE:	1510	CODE:
1294	RETVAL = boolSV (api_ready (self));	1511	RETVAL = boolSV (api_ready (self));
1295	OUTPUT:	1512	OUTPUT:
1296	RETVAL	1513	RETVAL
1297		1514
1298	SV *
1299	is_ready (SV *self)
1300	PROTOTYPE: $
1301	CODE:
1302	RETVAL = boolSV (api_is_ready (self));
1303	OUTPUT:
1304	RETVAL
1305
1306	int	1515	int
1307	nready (...)	1516	nready (...)
1308	PROTOTYPE:	1517	PROTOTYPE:
1309	CODE:	1518	CODE:
1310	RETVAL = coro_nready;	1519	RETVAL = coro_nready;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs. Revision 1.155 by root, Fri Sep 21 01:09:36 2007 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.155 by root, Fri Sep 21 01:09:36 2007 UTC