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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.133 by root, Thu Jan 4 20:14:19 2007 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 */
…		…
171		178
172	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
173	AV defav; / @_ */	180	AV defav; / @_ */
174	SV defsv; / $_ */	181	SV defsv; / $_ */
175	SV errsv; / $@ */	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
176	SV irssv; / $/ */	184	SV irssv; / $/ */
177	SV irssv_sv; / real $/ cache */	185	SV irssv_sv; / real $/ cache */
178		186
179	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
180	# include "state.h"	188	# include "state.h"
181	#undef VAR	189	#undef VAR
182		190
183	/* coro process data */	191	/* coro process data */
184	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 */
185	};	197	};
186		198
187	typedef struct coro *Coro__State;	199	typedef struct coro *Coro__State;
188	typedef struct coro *Coro__State_or_hashref;	200	typedef struct coro *Coro__State_or_hashref;
189		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
190	static AV *	219	static AV *
191	coro_clone_padlist (CV *cv)	220	coro_clone_padlist (pTHX_ CV *cv)
192	{	221	{
193	AV *padlist = CvPADLIST (cv);	222	AV *padlist = CvPADLIST (cv);
194	AV newpadlist, newpad;	223	AV newpadlist, newpad;
195		224
196	newpadlist = newAV ();	225	newpadlist = newAV ();
…		…
208		237
209	return newpadlist;	238	return newpadlist;
210	}	239	}
211		240
212	static void	241	static void
213	free_padlist (AV *padlist)	242	free_padlist (pTHX_ AV *padlist)
214	{	243	{
215	/* may be during global destruction */	244	/* may be during global destruction */
216	if (SvREFCNT (padlist))	245	if (SvREFCNT (padlist))
217	{	246	{
218	I32 i = AvFILLp (padlist);	247	I32 i = AvFILLp (padlist);
…		…
239	AV *padlist;	268	AV *padlist;
240	AV av = (AV )mg->mg_obj;	269	AV av = (AV )mg->mg_obj;
241		270
242	/* casting is fun. */	271	/* casting is fun. */
243	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
244	free_padlist (padlist);	273	free_padlist (aTHX_ padlist);
245		274
246	SvREFCNT_dec (av);	275	SvREFCNT_dec (av);
247		276
248	return 0;	277	return 0;
249	}	278	}
…		…
259	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
260	: 0	289	: 0
261		290
262	/* the next two functions merely cache the padlists */	291	/* the next two functions merely cache the padlists */
263	static void	292	static void
264	get_padlist (CV *cv)	293	get_padlist (pTHX_ CV *cv)
265	{	294	{
266	MAGIC *mg = CORO_MAGIC (cv);	295	MAGIC *mg = CORO_MAGIC (cv);
267	AV *av;	296	AV *av;
268		297
269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271	else	300	else
272	{	301	{
273	#if PREFER_PERL_FUNCTIONS	302	#if CORO_PREFER_PERL_FUNCTIONS
274	/* this is probably cleaner, but also slower? */	303	/* this is probably cleaner, but also slower? */
275	CV *cp = Perl_cv_clone (cv);	304	CV *cp = Perl_cv_clone (cv);
276	CvPADLIST (cv) = CvPADLIST (cp);	305	CvPADLIST (cv) = CvPADLIST (cp);
277	CvPADLIST (cp) = 0;	306	CvPADLIST (cp) = 0;
278	SvREFCNT_dec (cp);	307	SvREFCNT_dec (cp);
279	#else	308	#else
280	CvPADLIST (cv) = coro_clone_padlist (cv);	309	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281	#endif	310	#endif
282	}	311	}
283	}	312	}
284		313
285	static void	314	static void
286	put_padlist (CV *cv)	315	put_padlist (pTHX_ CV *cv)
287	{	316	{
288	MAGIC *mg = CORO_MAGIC (cv);	317	MAGIC *mg = CORO_MAGIC (cv);
289	AV *av;	318	AV *av;
290		319
291	if (!mg)	320	if (!mg)
…		…
302	av_extend (av, AvMAX (av) + 1);	331	av_extend (av, AvMAX (av) + 1);
303		332
304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305	}	334	}
306		335
		336	/ load & save, init *****************************************************/
		337
307	#define SB do {	338	#define SB do {
308	#define SE } while (0)	339	#define SE } while (0)
309		340
310	#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
311		342
312	static void	343	static void
313	load_perl (Coro__State c)	344	load_perl (pTHX_ Coro__State c)
314	{	345	{
315	#define VAR(name,type) PL_ ## name = c->name;	346	#define VAR(name,type) PL_ ## name = c->name;
316	# include "state.h"	347	# include "state.h"
317	#undef VAR	348	#undef VAR
318		349
319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
321	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
322	if (c->irssv)	355	if (c->irssv)
323	{	356	{
324	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		358	{
325	SvREFCNT_dec (c->irssv);	359	SvREFCNT_dec (c->irssv);
		360	c->irssv = 0;
		361	}
326	else	362	else
327	{	363	{
328	REPLACE_SV (PL_rs, c->irssv);	364	REPLACE_SV (PL_rs, c->irssv);
329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
330	sv_setsv (c->irssv_sv, PL_rs);	366	sv_setsv (c->irssv_sv, PL_rs);
…		…
336	CV *cv;	372	CV *cv;
337		373
338	/* now do the ugly restore mess */	374	/* now do the ugly restore mess */
339	while ((cv = (CV *)POPs))	375	while ((cv = (CV *)POPs))
340	{	376	{
341	put_padlist (cv); /* mark this padlist as available */	377	put_padlist (aTHX_ cv); /* mark this padlist as available */
342	CvDEPTH (cv) = PTR2IV (POPs);	378	CvDEPTH (cv) = PTR2IV (POPs);
343	CvPADLIST (cv) = (AV *)POPs;	379	CvPADLIST (cv) = (AV *)POPs;
344	}	380	}
345		381
346	PUTBACK;	382	PUTBACK;
347	}	383	}
348	}	384	}
349		385
350	static void	386	static void
351	save_perl (Coro__State c)	387	save_perl (pTHX_ Coro__State c)
352	{	388	{
353	{	389	{
354	dSP;	390	dSP;
355	I32 cxix = cxstack_ix;	391	I32 cxix = cxstack_ix;
356	PERL_CONTEXT *ccstk = cxstack;	392	PERL_CONTEXT *ccstk = cxstack;
…		…
368	{	404	{
369	while (cxix >= 0)	405	while (cxix >= 0)
370	{	406	{
371	PERL_CONTEXT *cx = &ccstk[cxix--];	407	PERL_CONTEXT *cx = &ccstk[cxix--];
372		408
373	if (CxTYPE (cx) == CXt_SUB)	409	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
374	{	410	{
375	CV *cv = cx->blk_sub.cv;	411	CV *cv = cx->blk_sub.cv;
376		412
377	if (CvDEPTH (cv))	413	if (CvDEPTH (cv))
378	{	414	{
…		…
380	PUSHs ((SV *)CvPADLIST (cv));	416	PUSHs ((SV *)CvPADLIST (cv));
381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
382	PUSHs ((SV *)cv);	418	PUSHs ((SV *)cv);
383		419
384	CvDEPTH (cv) = 0;	420	CvDEPTH (cv) = 0;
385	get_padlist (cv);	421	get_padlist (aTHX_ cv);
386	}	422	}
387	}	423	}
388	}	424	}
389		425
390	if (top_si->si_type == PERLSI_MAIN)	426	if (top_si->si_type == PERLSI_MAIN)
…		…
399	}	435	}
400		436
401	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;
402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
403	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;
404	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;
405		442
406	#define VAR(name,type)c->name = PL_ ## name;	443	#define VAR(name,type)c->name = PL_ ## name;
407	# include "state.h"	444	# include "state.h"
408	#undef VAR	445	#undef VAR
…		…
412	* allocate various perl stacks. This is an exact copy	449	* allocate various perl stacks. This is an exact copy
413	* of perl.c:init_stacks, except that it uses less memory	450	* of perl.c:init_stacks, except that it uses less memory
414	* on the (sometimes correct) assumption that coroutines do	451	* on the (sometimes correct) assumption that coroutines do
415	* not usually need a lot of stackspace.	452	* not usually need a lot of stackspace.
416	*/	453	*/
417	#if PREFER_PERL_FUNCTIONS	454	#if CORO_PREFER_PERL_FUNCTIONS
418	# define coro_init_stacks init_stacks	455	# define coro_init_stacks init_stacks
419	#else	456	#else
420	static void	457	static void
421	coro_init_stacks ()	458	coro_init_stacks (pTHX)
422	{	459	{
423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	460	PL_curstackinfo = new_stackinfo(64, 4);
424	PL_curstackinfo->si_type = PERLSI_MAIN;	461	PL_curstackinfo->si_type = PERLSI_MAIN;
425	PL_curstack = PL_curstackinfo->si_stack;	462	PL_curstack = PL_curstackinfo->si_stack;
426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427		464
428	PL_stack_base = AvARRAY(PL_curstack);	465	PL_stack_base = AvARRAY(PL_curstack);
429	PL_stack_sp = PL_stack_base;	466	PL_stack_sp = PL_stack_base;
430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	467	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431		468
432	New(50,PL_tmps_stack,128,SV*);	469	New(50,PL_tmps_stack,64,SV*);
433	PL_tmps_floor = -1;	470	PL_tmps_floor = -1;
434	PL_tmps_ix = -1;	471	PL_tmps_ix = -1;
435	PL_tmps_max = 128;	472	PL_tmps_max = 64;
436		473
437	New(54,PL_markstack,32,I32);	474	New(54,PL_markstack,16,I32);
438	PL_markstack_ptr = PL_markstack;	475	PL_markstack_ptr = PL_markstack;
439	PL_markstack_max = PL_markstack + 32;	476	PL_markstack_max = PL_markstack + 16;
440		477
441	#ifdef SET_MARK_OFFSET	478	#ifdef SET_MARK_OFFSET
442	SET_MARK_OFFSET;	479	SET_MARK_OFFSET;
443	#endif	480	#endif
444		481
445	New(54,PL_scopestack,32,I32);	482	New(54,PL_scopestack,16,I32);
446	PL_scopestack_ix = 0;	483	PL_scopestack_ix = 0;
447	PL_scopestack_max = 32;	484	PL_scopestack_max = 16;
448		485
449	New(54,PL_savestack,64,ANY);	486	New(54,PL_savestack,64,ANY);
450	PL_savestack_ix = 0;	487	PL_savestack_ix = 0;
451	PL_savestack_max = 64;	488	PL_savestack_max = 64;
452		489
453	#if !PERL_VERSION_ATLEAST (5,9,0)	490	#if !PERL_VERSION_ATLEAST (5,9,0)
454	New(54,PL_retstack,16,OP*);	491	New(54,PL_retstack,8,OP*);
455	PL_retstack_ix = 0;	492	PL_retstack_ix = 0;
456	PL_retstack_max = 16;	493	PL_retstack_max = 8;
457	#endif	494	#endif
458	}	495	}
459	#endif	496	#endif
460		497
461	/*	498	/*
462	* destroy the stacks, the callchain etc...	499	* destroy the stacks, the callchain etc...
463	*/	500	*/
464	static void	501	static void
465	coro_destroy_stacks ()	502	coro_destroy_stacks (pTHX)
466	{	503	{
467	if (!IN_DESTRUCT)	504	if (!IN_DESTRUCT)
468	{	505	{
469	/* restore all saved variables and stuff */	506	/* restore all saved variables and stuff */
470	LEAVE_SCOPE (0);	507	LEAVE_SCOPE (0);
…		…
472		509
473	/* free all temporaries */	510	/* free all temporaries */
474	FREETMPS;	511	FREETMPS;
475	assert (PL_tmps_ix == -1);	512	assert (PL_tmps_ix == -1);
476		513
		514	/* unwind all extra stacks */
477	POPSTACK_TO (PL_mainstack);	515	POPSTACK_TO (PL_mainstack);
		516
		517	/* unwind main stack */
		518	dounwind (-1);
478	}	519	}
479		520
480	while (PL_curstackinfo->si_next)	521	while (PL_curstackinfo->si_next)
481	PL_curstackinfo = PL_curstackinfo->si_next;	522	PL_curstackinfo = PL_curstackinfo->si_next;
482		523
…		…
499	#if !PERL_VERSION_ATLEAST (5,9,0)	540	#if !PERL_VERSION_ATLEAST (5,9,0)
500	Safefree (PL_retstack);	541	Safefree (PL_retstack);
501	#endif	542	#endif
502	}	543	}
503		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
504	static void	578	static void
505	setup_coro (struct coro *coro)	579	setup_coro (pTHX_ struct coro *coro)
506	{	580	{
507	/*	581	/*
508	* emulate part of the perl startup here.	582	* emulate part of the perl startup here.
509	*/	583	*/
510
511	coro_init_stacks ();	584	coro_init_stacks (aTHX);
512		585
513	PL_curcop = &PL_compiling;	586	PL_curcop = &PL_compiling;
514	PL_in_eval = EVAL_NULL;	587	PL_in_eval = EVAL_NULL;
		588	PL_comppad = 0;
515	PL_curpm = 0;	589	PL_curpm = 0;
516	PL_localizing = 0;	590	PL_localizing = 0;
517	PL_dirty = 0;	591	PL_dirty = 0;
518	PL_restartop = 0;	592	PL_restartop = 0;
519		593
…		…
527	Zero (&myop, 1, LOGOP);	601	Zero (&myop, 1, LOGOP);
528	myop.op_next = Nullop;	602	myop.op_next = Nullop;
529	myop.op_flags = OPf_WANT_VOID;	603	myop.op_flags = OPf_WANT_VOID;
530		604
531	PUSHMARK (SP);	605	PUSHMARK (SP);
532	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	606	XPUSHs (av_shift (GvAV (PL_defgv)));
533	PUTBACK;	607	PUTBACK;
534	PL_op = (OP *)&myop;	608	PL_op = (OP *)&myop;
535	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	609	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
536	SPAGAIN;	610	SPAGAIN;
537	}	611	}
538		612
539	ENTER; /* necessary e.g. for dounwind */	613	ENTER; /* necessary e.g. for dounwind */
540	}	614	}
541		615
542	static void	616	static void
543	free_coro_mortal ()	617	free_coro_mortal (pTHX)
544	{	618	{
545	if (coro_mortal)	619	if (coro_mortal)
546	{	620	{
547	SvREFCNT_dec (coro_mortal);	621	SvREFCNT_dec (coro_mortal);
548	coro_mortal = 0;	622	coro_mortal = 0;
549	}	623	}
550	}	624	}
551		625
552	/* 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 */
553	static void NOINLINE	629	static void NOINLINE
554	prepare_cctx (coro_cctx *cctx)	630	prepare_cctx (pTHX_ coro_cctx *cctx)
555	{	631	{
556	dSP;	632	dSP;
557	LOGOP myop;	633	LOGOP myop;
558		634
559	Zero (&myop, 1, LOGOP);	635	Zero (&myop, 1, LOGOP);
…		…
568	PL_op = (OP *)&myop;	644	PL_op = (OP *)&myop;
569	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	645	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
570	SPAGAIN;	646	SPAGAIN;
571	}	647	}
572		648
		649	/*
		650	* this is a _very_ stripped down perl interpreter ;)
		651	*/
573	static void	652	static void
574	coro_run (void *arg)	653	coro_run (void *arg)
575	{	654	{
		655	dTHX;
		656
576	/* coro_run is the alternative tail of transfer(), so unlock here. */	657	/* coro_run is the alternative tail of transfer(), so unlock here. */
577	UNLOCK;	658	UNLOCK;
578		659
579	/*
580	* this is a _very_ stripped down perl interpreter ;)
581	*/
582	PL_top_env = &PL_start_env;	660	PL_top_env = &PL_start_env;
583		661
584	/* inject call to cctx_init */	662	/* inject a fake subroutine call to cctx_init */
585	prepare_cctx ((coro_cctx *)arg);	663	prepare_cctx (aTHX_ (coro_cctx *)arg);
586		664
587	/* 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 */
588	PL_restartop = PL_op;	666	PL_restartop = PL_op;
589	perl_run (PL_curinterp);	667	perl_run (PL_curinterp);
590		668
591	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	669	/*
592	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 */
593	}	678	}
594		679
595	static coro_cctx *	680	static coro_cctx *
596	cctx_new ()	681	cctx_new ()
597	{	682	{
598	coro_cctx *cctx;	683	coro_cctx *cctx;
		684	void *stack_start;
		685	size_t stack_size;
599		686
600	++cctx_count;	687	++cctx_count;
601		688
602	Newz (0, cctx, 1, coro_cctx);	689	Newz (0, cctx, 1, coro_cctx);
603		690
604	#if HAVE_MMAP	691	#if HAVE_MMAP
605		692
606	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	693	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
607	/* mmap supposedly does allocate-on-write for us */	694	/* mmap supposedly does allocate-on-write for us */
608	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);
609		696
610	if (cctx->sptr == (void *)-1)	697	if (cctx->sptr != (void *)-1)
611	{
612	perror ("FATAL: unable to mmap stack for coroutine");
613	_exit (EXIT_FAILURE);
614	}	698	{
615
616	# if STACKGUARD	699	# if CORO_STACKGUARD
617	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	700	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
618	# 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);
619		711
620	#else
621
622	cctx->ssize = STACKSIZE * (long)sizeof (long);
623	New (0, cctx->sptr, STACKSIZE, long);
624
625	if (!cctx->sptr)	712	if (!cctx->sptr)
626	{	713	{
627	perror ("FATAL: unable to malloc stack for coroutine");	714	perror ("FATAL: unable to allocate stack for coroutine");
628	_exit (EXIT_FAILURE);	715	_exit (EXIT_FAILURE);
629	}	716	}
630		717
631	#endif	718	stack_start = cctx->sptr;
		719	stack_size = cctx->ssize;
		720	}
632		721
633	#if USE_VALGRIND	722	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
634	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
635	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
636	cctx->ssize + (char *)cctx->sptr
637	);
638	#endif
639
640	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);
641		724
642	return cctx;	725	return cctx;
643	}	726	}
644		727
645	static void	728	static void
…		…
648	if (!cctx)	731	if (!cctx)
649	return;	732	return;
650		733
651	--cctx_count;	734	--cctx_count;
652		735
653	#if USE_VALGRIND	736	#if CORO_USE_VALGRIND
654	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	737	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
655	#endif	738	#endif
656		739
657	#if HAVE_MMAP	740	#if HAVE_MMAP
		741	if (cctx->mapped)
658	munmap (cctx->sptr, cctx->ssize);	742	munmap (cctx->sptr, cctx->ssize);
659	#else	743	else
		744	#endif
660	Safefree (cctx->sptr);	745	Safefree (cctx->sptr);
661	#endif
662		746
663	Safefree (cctx);	747	Safefree (cctx);
664	}	748	}
665		749
666	static coro_cctx *	750	static coro_cctx *
667	cctx_get ()	751	cctx_get (pTHX)
668	{	752	{
669	coro_cctx *cctx;
670
671	if (cctx_first)	753	while (cctx_first)
672	{	754	{
673	cctx = cctx_first;	755	coro_cctx *cctx = cctx_first;
674	cctx_first = cctx->next;	756	cctx_first = cctx->next;
675	--cctx_idle;	757	--cctx_idle;
		758
		759	if (cctx->ssize >= coro_stacksize)
		760	return cctx;
		761
		762	cctx_destroy (cctx);
676	}	763	}
677	else	764
678	{
679	cctx = cctx_new ();
680	PL_op = PL_op->op_next;	765	PL_op = PL_op->op_next;
681	}
682
683	return cctx;	766	return cctx_new ();
684	}	767	}
685		768
686	static void	769	static void
687	cctx_put (coro_cctx *cctx)	770	cctx_put (coro_cctx *cctx)
688	{	771	{
…		…
700	++cctx_idle;	783	++cctx_idle;
701	cctx->next = cctx_first;	784	cctx->next = cctx_first;
702	cctx_first = cctx;	785	cctx_first = cctx;
703	}	786	}
704		787
		788	/ coroutine switching ***************************************************/
		789
705	/* never call directly, always through the coro_state_transfer global variable */	790	/* never call directly, always through the coro_state_transfer global variable */
706	static void NOINLINE	791	static void NOINLINE
707	transfer (struct coro prev, struct coro next)	792	transfer (pTHX_ struct coro prev, struct coro next)
708	{	793	{
709	dSTACKLEVEL;	794	dSTACKLEVEL;
710		795
711	/* sometimes transfer is only called to set idle_sp */	796	/* sometimes transfer is only called to set idle_sp */
712	if (!next)	797	if (!next)
…		…
745	if (next->flags & CF_NEW)	830	if (next->flags & CF_NEW)
746	{	831	{
747	/* need to start coroutine */	832	/* need to start coroutine */
748	next->flags &= ~CF_NEW;	833	next->flags &= ~CF_NEW;
749	/* first get rid of the old state */	834	/* first get rid of the old state */
750	save_perl (prev);	835	save_perl (aTHX_ prev);
751	/* setup coroutine call */	836	/* setup coroutine call */
752	setup_coro (next);	837	setup_coro (aTHX_ next);
753	/* need a new stack */	838	/* need a new stack */
754	assert (!next->cctx);	839	assert (!next->cctx);
755	}	840	}
756	else	841	else
757	{	842	{
758	/* coroutine already started */	843	/* coroutine already started */
759	save_perl (prev);	844	save_perl (aTHX_ prev);
760	load_perl (next);	845	load_perl (aTHX_ next);
761	}	846	}
762		847
763	prev__cctx = prev->cctx;	848	prev__cctx = prev->cctx;
764		849
765	/* possibly "free" the cctx */	850	/* possibly "free" the cctx */
…		…
774	prev__cctx->inuse = 0;	859	prev__cctx->inuse = 0;
775	}	860	}
776		861
777	if (!next->cctx)	862	if (!next->cctx)
778	{	863	{
779	next->cctx = cctx_get ();	864	next->cctx = cctx_get (aTHX);
780	assert (!next->cctx->inuse);	865	assert (!next->cctx->inuse);
781	next->cctx->inuse = 1;	866	next->cctx->inuse = 1;
782	}	867	}
783		868
784	if (prev__cctx != next->cctx)	869	if (prev__cctx != next->cctx)
…		…
786	prev__cctx->top_env = PL_top_env;	871	prev__cctx->top_env = PL_top_env;
787	PL_top_env = next->cctx->top_env;	872	PL_top_env = next->cctx->top_env;
788	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	873	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
789	}	874	}
790		875
791	free_coro_mortal ();	876	free_coro_mortal (aTHX);
792	UNLOCK;	877	UNLOCK;
793	}	878	}
794	}	879	}
795		880
796	struct transfer_args	881	struct transfer_args
797	{	882	{
798	struct coro prev, next;	883	struct coro prev, next;
799	};	884	};
800		885
801	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	886	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		887
		888	/ high level stuff ******************************************************/
802		889
803	static int	890	static int
804	coro_state_destroy (struct coro *coro)	891	coro_state_destroy (pTHX_ struct coro *coro)
805	{	892	{
806	if (coro->refcnt--)
807	return 0;
808
809	if (coro->flags & CF_DESTROYED)	893	if (coro->flags & CF_DESTROYED)
810	return 0;	894	return 0;
811		895
812	coro->flags \|= CF_DESTROYED;	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 */
813		908
814	if (coro->mainstack && coro->mainstack != main_mainstack)	909	if (coro->mainstack && coro->mainstack != main_mainstack)
815	{	910	{
		911	struct coro temp;
		912
816	assert (!(coro->flags & CF_RUNNING));	913	assert (!(coro->flags & CF_RUNNING));
817		914
818	struct coro temp;
819	Zero (&temp, 1, struct coro);	915	Zero (&temp, 1, struct coro);
820	temp.save = CORO_SAVE_ALL;	916	temp.save = CORO_SAVE_ALL;
821		917
822	if (coro->flags & CF_RUNNING)	918	if (coro->flags & CF_RUNNING)
823	croak ("FATAL: tried to destroy currently running coroutine");	919	croak ("FATAL: tried to destroy currently running coroutine");
824		920
825	save_perl (&temp);	921	save_perl (aTHX_ &temp);
826	load_perl (coro);	922	load_perl (aTHX_ coro);
827		923
828	coro_destroy_stacks ();	924	coro_destroy_stacks (aTHX);
829		925
830	load_perl (&temp); /* this will get rid of defsv etc.. */	926	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
831		927
832	coro->mainstack = 0;	928	coro->mainstack = 0;
833	}	929	}
834		930
835	cctx_destroy (coro->cctx);	931	cctx_destroy (coro->cctx);
836	SvREFCNT_dec (coro->args);	932	SvREFCNT_dec (coro->args);
837		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
838	return 1;	938	return 1;
839	}	939	}
840		940
841	static int	941	static int
842	coro_state_clear (pTHX_ SV sv, MAGIC mg)	942	coro_state_free (pTHX_ SV sv, MAGIC mg)
843	{	943	{
844	struct coro coro = (struct coro )mg->mg_ptr;	944	struct coro coro = (struct coro )mg->mg_ptr;
845	mg->mg_ptr = 0;	945	mg->mg_ptr = 0;
846		946
		947	coro->hv = 0;
		948
		949	if (--coro->refcnt < 0)
		950	{
847	coro_state_destroy (coro);	951	coro_state_destroy (aTHX_ coro);
848
849	if (!coro->refcnt)
850	Safefree (coro);	952	Safefree (coro);
		953	}
851		954
852	return 0;	955	return 0;
853	}	956	}
854		957
855	static int	958	static int
…		…
862	return 0;	965	return 0;
863	}	966	}
864		967
865	static MGVTBL coro_state_vtbl = {	968	static MGVTBL coro_state_vtbl = {
866	0, 0, 0, 0,	969	0, 0, 0, 0,
867	coro_state_clear,	970	coro_state_free,
868	0,	971	0,
869	#ifdef MGf_DUP	972	#ifdef MGf_DUP
870	coro_state_dup,	973	coro_state_dup,
871	#else	974	#else
872	# define MGf_DUP 0	975	# define MGf_DUP 0
873	#endif	976	#endif
874	};	977	};
875		978
876	static struct coro *	979	static struct coro *
877	SvSTATE (SV *coro)	980	SvSTATE_ (pTHX_ SV *coro)
878	{	981	{
879	HV *stash;	982	HV *stash;
880	MAGIC *mg;	983	MAGIC *mg;
881		984
882	if (SvROK (coro))	985	if (SvROK (coro))
…		…
888	/* very slow, but rare, check */	991	/* very slow, but rare, check */
889	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	992	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
890	croak ("Coro::State object required");	993	croak ("Coro::State object required");
891	}	994	}
892		995
893	mg = SvMAGIC (coro);	996	mg = CORO_MAGIC (coro);
894	assert (mg->mg_type == PERL_MAGIC_ext);
895	return (struct coro *)mg->mg_ptr;	997	return (struct coro *)mg->mg_ptr;
896	}	998	}
897		999
		1000	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		1001
898	static void	1002	static void
899	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)
900	{	1004	{
901	ta->prev = SvSTATE (prev_sv);	1005	ta->prev = SvSTATE (prev_sv);
902	ta->next = SvSTATE (next_sv);	1006	ta->next = SvSTATE (next_sv);
903	}	1007	}
904		1008
905	static void	1009	static void
906	api_transfer (SV prev_sv, SV next_sv)	1010	api_transfer (SV prev_sv, SV next_sv)
907	{	1011	{
		1012	dTHX;
908	struct transfer_args ta;	1013	struct transfer_args ta;
909		1014
910	prepare_transfer (&ta, prev_sv, next_sv);	1015	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
911	TRANSFER (ta);	1016	TRANSFER (ta);
912	}	1017	}
913		1018
914	static int	1019	static int
915	api_save (SV *coro_sv, int new_save)	1020	api_save (SV *coro_sv, int new_save)
916	{	1021	{
		1022	dTHX;
917	struct coro *coro = SvSTATE (coro_sv);	1023	struct coro *coro = SvSTATE (coro_sv);
918	int old_save = coro->save;	1024	int old_save = coro->save;
919		1025
920	if (new_save >= 0)	1026	if (new_save >= 0)
921	coro->save = new_save;	1027	coro->save = new_save;
…		…
923	return old_save;	1029	return old_save;
924	}	1030	}
925		1031
926	/ Coro ******************************************************************/	1032	/ Coro ******************************************************************/
927		1033
928	#define PRIO_MAX 3
929	#define PRIO_HIGH 1
930	#define PRIO_NORMAL 0
931	#define PRIO_LOW -1
932	#define PRIO_IDLE -3
933	#define PRIO_MIN -4
934
935	/* for Coro.pm */
936	static SV *coro_current;
937	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
938	static int coro_nready;
939
940	static void	1034	static void
941	coro_enq (SV *coro_sv)	1035	coro_enq (pTHX_ SV *coro_sv)
942	{	1036	{
943	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);
944	coro_nready++;
945	}	1038	}
946		1039
947	static SV *	1040	static SV *
948	coro_deq (int min_prio)	1041	coro_deq (pTHX_ int min_prio)
949	{	1042	{
950	int prio = PRIO_MAX - PRIO_MIN;	1043	int prio = PRIO_MAX - PRIO_MIN;
951		1044
952	min_prio -= PRIO_MIN;	1045	min_prio -= PRIO_MIN;
953	if (min_prio < 0)	1046	if (min_prio < 0)
954	min_prio = 0;	1047	min_prio = 0;
955		1048
956	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1049	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
957	if (AvFILLp (coro_ready [prio]) >= 0)	1050	if (AvFILLp (coro_ready [prio]) >= 0)
958	{
959	coro_nready--;
960	return av_shift (coro_ready [prio]);	1051	return av_shift (coro_ready [prio]);
961	}
962		1052
963	return 0;	1053	return 0;
964	}	1054	}
965		1055
966	static int	1056	static int
967	api_ready (SV *coro_sv)	1057	api_ready (SV *coro_sv)
968	{	1058	{
		1059	dTHX;
969	struct coro *coro;	1060	struct coro *coro;
970		1061
971	if (SvROK (coro_sv))	1062	if (SvROK (coro_sv))
972	coro_sv = SvRV (coro_sv);	1063	coro_sv = SvRV (coro_sv);
973		1064
…		…
977	return 0;	1068	return 0;
978		1069
979	coro->flags \|= CF_READY;	1070	coro->flags \|= CF_READY;
980		1071
981	LOCK;	1072	LOCK;
982	coro_enq (SvREFCNT_inc (coro_sv));	1073	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1074	++coro_nready;
983	UNLOCK;	1075	UNLOCK;
984		1076
985	return 1;	1077	return 1;
986	}	1078	}
987		1079
988	static int	1080	static int
989	api_is_ready (SV *coro_sv)	1081	api_is_ready (SV *coro_sv)
990	{	1082	{
		1083	dTHX;
991	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1084	return !!(SvSTATE (coro_sv)->flags & CF_READY);
992	}	1085	}
993		1086
994	static void	1087	static void
995	prepare_schedule (struct transfer_args *ta)	1088	prepare_schedule (pTHX_ struct transfer_args *ta)
996	{	1089	{
997	SV prev_sv, next_sv;	1090	SV prev_sv, next_sv;
998		1091
999	for (;;)	1092	for (;;)
1000	{	1093	{
1001	LOCK;	1094	LOCK;
1002	next_sv = coro_deq (PRIO_MIN);	1095	next_sv = coro_deq (aTHX_ PRIO_MIN);
1003	UNLOCK;
1004		1096
1005	/* nothing to schedule: call the idle handler */	1097	/* nothing to schedule: call the idle handler */
1006	if (!next_sv)	1098	if (!next_sv)
1007	{	1099	{
1008	dSP;	1100	dSP;
		1101	UNLOCK;
1009		1102
1010	ENTER;	1103	ENTER;
1011	SAVETMPS;	1104	SAVETMPS;
1012		1105
1013	PUSHMARK (SP);	1106	PUSHMARK (SP);
…		…
1022	ta->next = SvSTATE (next_sv);	1115	ta->next = SvSTATE (next_sv);
1023		1116
1024	/* cannot transfer to destroyed coros, skip and look for next */	1117	/* cannot transfer to destroyed coros, skip and look for next */
1025	if (ta->next->flags & CF_DESTROYED)	1118	if (ta->next->flags & CF_DESTROYED)
1026	{	1119	{
		1120	UNLOCK;
1027	SvREFCNT_dec (next_sv);	1121	SvREFCNT_dec (next_sv);
		1122	/* coro_nready is already taken care of by destroy */
1028	continue;	1123	continue;
1029	}	1124	}
1030		1125
		1126	--coro_nready;
		1127	UNLOCK;
1031	break;	1128	break;
1032	}	1129	}
1033		1130
1034	/* free this only after the transfer */	1131	/* free this only after the transfer */
1035	prev_sv = SvRV (coro_current);	1132	prev_sv = SvRV (coro_current);
…		…
1038		1135
1039	assert (ta->next->flags & CF_READY);	1136	assert (ta->next->flags & CF_READY);
1040	ta->next->flags &= ~CF_READY;	1137	ta->next->flags &= ~CF_READY;
1041		1138
1042	LOCK;	1139	LOCK;
1043	free_coro_mortal ();	1140	free_coro_mortal (aTHX);
1044	coro_mortal = prev_sv;	1141	coro_mortal = prev_sv;
1045	UNLOCK;	1142	UNLOCK;
1046	}	1143	}
1047		1144
1048	static void	1145	static void
1049	prepare_cede (struct transfer_args *ta)	1146	prepare_cede (pTHX_ struct transfer_args *ta)
1050	{	1147	{
1051	api_ready (coro_current);	1148	api_ready (coro_current);
1052	prepare_schedule (ta);	1149	prepare_schedule (aTHX_ ta);
1053	}	1150	}
1054		1151
1055	static int	1152	static int
1056	prepare_cede_notself (struct transfer_args *ta)	1153	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1057	{	1154	{
1058	if (coro_nready)	1155	if (coro_nready)
1059	{	1156	{
1060	SV *prev = SvRV (coro_current);	1157	SV *prev = SvRV (coro_current);
1061	prepare_schedule (ta);	1158	prepare_schedule (aTHX_ ta);
1062	api_ready (prev);	1159	api_ready (prev);
1063	return 1;	1160	return 1;
1064	}	1161	}
1065	else	1162	else
1066	return 0;	1163	return 0;
1067	}	1164	}
1068		1165
1069	static void	1166	static void
1070	api_schedule (void)	1167	api_schedule (void)
1071	{	1168	{
		1169	dTHX;
1072	struct transfer_args ta;	1170	struct transfer_args ta;
1073		1171
1074	prepare_schedule (&ta);	1172	prepare_schedule (aTHX_ &ta);
1075	TRANSFER (ta);	1173	TRANSFER (ta);
1076	}	1174	}
1077		1175
1078	static int	1176	static int
1079	api_cede (void)	1177	api_cede (void)
1080	{	1178	{
		1179	dTHX;
1081	struct transfer_args ta;	1180	struct transfer_args ta;
1082		1181
1083	prepare_cede (&ta);	1182	prepare_cede (aTHX_ &ta);
1084		1183
1085	if (ta.prev != ta.next)	1184	if (ta.prev != ta.next)
1086	{	1185	{
1087	TRANSFER (ta);	1186	TRANSFER (ta);
1088	return 1;	1187	return 1;
…		…
1092	}	1191	}
1093		1192
1094	static int	1193	static int
1095	api_cede_notself (void)	1194	api_cede_notself (void)
1096	{	1195	{
		1196	dTHX;
1097	struct transfer_args ta;	1197	struct transfer_args ta;
1098		1198
1099	if (prepare_cede_notself (&ta))	1199	if (prepare_cede_notself (aTHX_ &ta))
1100	{	1200	{
1101	TRANSFER (ta);	1201	TRANSFER (ta);
1102	return 1;	1202	return 1;
1103	}	1203	}
1104	else	1204	else
…		…
1120		1220
1121	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1221	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1122	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1222	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1123	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1223	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1124	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));
1125	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1227	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1126		1228
1127	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;
1128		1234
1129	coroapi.ver = CORO_API_VERSION;	1235	coroapi.ver = CORO_API_VERSION;
1130	coroapi.transfer = api_transfer;	1236	coroapi.transfer = api_transfer;
1131		1237
1132	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1238	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1140	HV *hv;	1246	HV *hv;
1141	int i;	1247	int i;
1142		1248
1143	Newz (0, coro, 1, struct coro);	1249	Newz (0, coro, 1, struct coro);
1144	coro->args = newAV ();	1250	coro->args = newAV ();
1145	coro->save = CORO_SAVE_ALL;	1251	coro->save = CORO_SAVE_DEF;
1146	coro->flags = CF_NEW;	1252	coro->flags = CF_NEW;
1147		1253
		1254	if (coro_first) coro_first->prev = coro;
		1255	coro->next = coro_first;
		1256	coro_first = coro;
		1257
1148	hv = newHV ();	1258	coro->hv = hv = newHV ();
1149	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;
1150	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1260	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1151		1261
1152	for (i = 1; i < items; i++)	1262	for (i = 1; i < items; i++)
1153	av_push (coro->args, newSVsv (ST (i)));	1263	av_push (coro->args, newSVsv (ST (i)));
…		…
1157		1267
1158	int	1268	int
1159	save (SV *coro, int new_save = -1)	1269	save (SV *coro, int new_save = -1)
1160	CODE:	1270	CODE:
1161	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	}
1162	OUTPUT:	1283	OUTPUT:
1163	RETVAL	1284	RETVAL
1164		1285
1165	void	1286	void
1166	_set_stacklevel (...)	1287	_set_stacklevel (...)
…		…
1182		1303
1183	case 1:	1304	case 1:
1184	if (items != 2)	1305	if (items != 2)
1185	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);
1186		1307
1187	prepare_transfer (&ta, ST (0), ST (1));	1308	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1188	break;	1309	break;
1189		1310
1190	case 2:	1311	case 2:
1191	prepare_schedule (&ta);	1312	prepare_schedule (aTHX_ &ta);
1192	break;	1313	break;
1193		1314
1194	case 3:	1315	case 3:
1195	prepare_cede (&ta);	1316	prepare_cede (aTHX_ &ta);
1196	break;	1317	break;
1197		1318
1198	case 4:	1319	case 4:
1199	if (!prepare_cede_notself (&ta))	1320	if (!prepare_cede_notself (aTHX_ &ta))
1200	XSRETURN_EMPTY;	1321	XSRETURN_EMPTY;
1201		1322
1202	break;	1323	break;
1203	}	1324	}
1204		1325
1205	BARRIER;	1326	BARRIER;
1206	TRANSFER (ta);	1327	TRANSFER (ta);
		1328
		1329	if (GIMME_V != G_VOID && ta.next != ta.prev)
		1330	XSRETURN_YES;
1207	}	1331	}
1208		1332
1209	bool	1333	bool
1210	_destroy (SV *coro_sv)	1334	_destroy (SV *coro_sv)
1211	CODE:	1335	CODE:
1212	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1336	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1213	OUTPUT:	1337	OUTPUT:
1214	RETVAL	1338	RETVAL
1215		1339
1216	void	1340	void
1217	_exit (code)	1341	_exit (code)
…		…
1219	PROTOTYPE: $	1343	PROTOTYPE: $
1220	CODE:	1344	CODE:
1221	_exit (code);	1345	_exit (code);
1222		1346
1223	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
1224	cctx_count ()	1357	cctx_count ()
1225	CODE:	1358	CODE:
1226	RETVAL = cctx_count;	1359	RETVAL = cctx_count;
1227	OUTPUT:	1360	OUTPUT:
1228	RETVAL	1361	RETVAL
…		…
1231	cctx_idle ()	1364	cctx_idle ()
1232	CODE:	1365	CODE:
1233	RETVAL = cctx_idle;	1366	RETVAL = cctx_idle;
1234	OUTPUT:	1367	OUTPUT:
1235	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
1236		1438
1237	MODULE = Coro::State PACKAGE = Coro	1439	MODULE = Coro::State PACKAGE = Coro
1238		1440
1239	BOOT:	1441	BOOT:
1240	{	1442	{
…		…
1308	CODE:	1510	CODE:
1309	RETVAL = boolSV (api_ready (self));	1511	RETVAL = boolSV (api_ready (self));
1310	OUTPUT:	1512	OUTPUT:
1311	RETVAL	1513	RETVAL
1312		1514
1313	SV *
1314	is_ready (SV *self)
1315	PROTOTYPE: $
1316	CODE:
1317	RETVAL = boolSV (api_is_ready (self));
1318	OUTPUT:
1319	RETVAL
1320
1321	int	1515	int
1322	nready (...)	1516	nready (...)
1323	PROTOTYPE:	1517	PROTOTYPE:
1324	CODE:	1518	CODE:
1325	RETVAL = coro_nready;	1519	RETVAL = coro_nready;

Diff Legend

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

Comparing Coro/Coro/State.xs (file contents): Revision 1.133 by root, Thu Jan 4 20:14:19 2007 UTC vs. Revision 1.155 by root, Fri Sep 21 01:09:36 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.133 by root, Thu Jan 4 20:14:19 2007 UTC vs.
Revision 1.155 by root, Fri Sep 21 01:09:36 2007 UTC