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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs.
Revision 1.152 by root, Thu Sep 20 12:02:25 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 */
		151	JMPENV idle_te; / same as idle_sp, but for top_env, TODO: remove once stable */
143	JMPENV *top_env;	152	JMPENV *top_env;
144	coro_context cctx;	153	coro_context cctx;
145		154
146	int inuse;
147
148	#if USE_VALGRIND	155	#if CORO_USE_VALGRIND
149	int valgrind_id;	156	int valgrind_id;
150	#endif	157	#endif
		158	char inuse, mapped;
151	} coro_cctx;	159	} coro_cctx;
152		160
153	enum {	161	enum {
154	CF_RUNNING = 0x0001, /* coroutine is running */	162	CF_RUNNING = 0x0001, /* coroutine is running */
155	CF_READY = 0x0002, /* coroutine is ready */	163	CF_READY = 0x0002, /* coroutine is ready */
156	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 */
157	};	166	};
158		167
159	/* this is a structure representing a perl-level coroutine */	168	/* this is a structure representing a perl-level coroutine */
160	struct coro {	169	struct coro {
161	/* the c coroutine allocated to this perl coroutine, if any */	170	/* the c coroutine allocated to this perl coroutine, if any */
…		…
169		178
170	/* optionally saved, might be zero */	179	/* optionally saved, might be zero */
171	AV defav; / @_ */	180	AV defav; / @_ */
172	SV defsv; / $_ */	181	SV defsv; / $_ */
173	SV errsv; / $@ */	182	SV errsv; / $@ */
		183	GV deffh; / default filehandle */
174	SV irssv; / $/ */	184	SV irssv; / $/ */
175	SV irssv_sv; / real $/ cache */	185	SV irssv_sv; / real $/ cache */
176		186
177	#define VAR(name,type) type name;	187	#define VAR(name,type) type name;
178	# include "state.h"	188	# include "state.h"
179	#undef VAR	189	#undef VAR
180		190
181	/* coro process data */	191	/* coro process data */
182	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 */
183	};	197	};
184		198
185	typedef struct coro *Coro__State;	199	typedef struct coro *Coro__State;
186	typedef struct coro *Coro__State_or_hashref;	200	typedef struct coro *Coro__State_or_hashref;
187		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 *first;
		216
		217	/ lowlevel stuff ********************************************************/
		218
188	static AV *	219	static AV *
189	coro_clone_padlist (CV *cv)	220	coro_clone_padlist (pTHX_ CV *cv)
190	{	221	{
191	AV *padlist = CvPADLIST (cv);	222	AV *padlist = CvPADLIST (cv);
192	AV newpadlist, newpad;	223	AV newpadlist, newpad;
193		224
194	newpadlist = newAV ();	225	newpadlist = newAV ();
…		…
206		237
207	return newpadlist;	238	return newpadlist;
208	}	239	}
209		240
210	static void	241	static void
211	free_padlist (AV *padlist)	242	free_padlist (pTHX_ AV *padlist)
212	{	243	{
213	/* may be during global destruction */	244	/* may be during global destruction */
214	if (SvREFCNT (padlist))	245	if (SvREFCNT (padlist))
215	{	246	{
216	I32 i = AvFILLp (padlist);	247	I32 i = AvFILLp (padlist);
…		…
237	AV *padlist;	268	AV *padlist;
238	AV av = (AV )mg->mg_obj;	269	AV av = (AV )mg->mg_obj;
239		270
240	/* casting is fun. */	271	/* casting is fun. */
241	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))	272	while (&PL_sv_undef != (SV )(padlist = (AV )av_pop (av)))
242	free_padlist (padlist);	273	free_padlist (aTHX_ padlist);
243		274
244	SvREFCNT_dec (av);	275	SvREFCNT_dec (av);
245		276
246	return 0;	277	return 0;
247	}	278	}
…		…
257	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	288	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
258	: 0	289	: 0
259		290
260	/* the next two functions merely cache the padlists */	291	/* the next two functions merely cache the padlists */
261	static void	292	static void
262	get_padlist (CV *cv)	293	get_padlist (pTHX_ CV *cv)
263	{	294	{
264	MAGIC *mg = CORO_MAGIC (cv);	295	MAGIC *mg = CORO_MAGIC (cv);
265	AV *av;	296	AV *av;
266		297
267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	298	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	299	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
269	else	300	else
270	{	301	{
271	#if PREFER_PERL_FUNCTIONS	302	#if CORO_PREFER_PERL_FUNCTIONS
272	/* this is probably cleaner, but also slower? */	303	/* this is probably cleaner, but also slower? */
273	CV *cp = Perl_cv_clone (cv);	304	CV *cp = Perl_cv_clone (cv);
274	CvPADLIST (cv) = CvPADLIST (cp);	305	CvPADLIST (cv) = CvPADLIST (cp);
275	CvPADLIST (cp) = 0;	306	CvPADLIST (cp) = 0;
276	SvREFCNT_dec (cp);	307	SvREFCNT_dec (cp);
277	#else	308	#else
278	CvPADLIST (cv) = coro_clone_padlist (cv);	309	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
279	#endif	310	#endif
280	}	311	}
281	}	312	}
282		313
283	static void	314	static void
284	put_padlist (CV *cv)	315	put_padlist (pTHX_ CV *cv)
285	{	316	{
286	MAGIC *mg = CORO_MAGIC (cv);	317	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	318	AV *av;
288		319
289	if (!mg)	320	if (!mg)
…		…
300	av_extend (av, AvMAX (av) + 1);	331	av_extend (av, AvMAX (av) + 1);
301		332
302	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	333	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
303	}	334	}
304		335
		336	/ load & save, init *****************************************************/
		337
305	#define SB do {	338	#define SB do {
306	#define SE } while (0)	339	#define SE } while (0)
307		340
308	#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
309		342
310	static void	343	static void
311	load_perl (Coro__State c)	344	load_perl (pTHX_ Coro__State c)
312	{	345	{
313	#define VAR(name,type) PL_ ## name = c->name;	346	#define VAR(name,type) PL_ ## name = c->name;
314	# include "state.h"	347	# include "state.h"
315	#undef VAR	348	#undef VAR
316		349
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	350	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	351	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
319	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
320	if (c->irssv)	355	if (c->irssv)
321	{	356	{
322	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))	357	if (c->irssv == PL_rs \|\| sv_eq (PL_rs, c->irssv))
		358	{
323	SvREFCNT_dec (c->irssv);	359	SvREFCNT_dec (c->irssv);
		360	c->irssv = 0;
		361	}
324	else	362	else
325	{	363	{
326	REPLACE_SV (PL_rs, c->irssv);	364	REPLACE_SV (PL_rs, c->irssv);
327	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	365	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
328	sv_setsv (c->irssv_sv, PL_rs);	366	sv_setsv (c->irssv_sv, PL_rs);
…		…
334	CV *cv;	372	CV *cv;
335		373
336	/* now do the ugly restore mess */	374	/* now do the ugly restore mess */
337	while ((cv = (CV *)POPs))	375	while ((cv = (CV *)POPs))
338	{	376	{
339	put_padlist (cv); /* mark this padlist as available */	377	put_padlist (aTHX_ cv); /* mark this padlist as available */
340	CvDEPTH (cv) = PTR2IV (POPs);	378	CvDEPTH (cv) = PTR2IV (POPs);
341	CvPADLIST (cv) = (AV *)POPs;	379	CvPADLIST (cv) = (AV *)POPs;
342	}	380	}
343		381
344	PUTBACK;	382	PUTBACK;
345	}	383	}
346	}	384	}
347		385
348	static void	386	static void
349	save_perl (Coro__State c)	387	save_perl (pTHX_ Coro__State c)
350	{	388	{
351	{	389	{
352	dSP;	390	dSP;
353	I32 cxix = cxstack_ix;	391	I32 cxix = cxstack_ix;
354	PERL_CONTEXT *ccstk = cxstack;	392	PERL_CONTEXT *ccstk = cxstack;
…		…
366	{	404	{
367	while (cxix >= 0)	405	while (cxix >= 0)
368	{	406	{
369	PERL_CONTEXT *cx = &ccstk[cxix--];	407	PERL_CONTEXT *cx = &ccstk[cxix--];
370		408
371	if (CxTYPE (cx) == CXt_SUB)	409	if (CxTYPE (cx) == CXt_SUB \|\| CxTYPE (cx) == CXt_FORMAT)
372	{	410	{
373	CV *cv = cx->blk_sub.cv;	411	CV *cv = cx->blk_sub.cv;
374		412
375	if (CvDEPTH (cv))	413	if (CvDEPTH (cv))
376	{	414	{
…		…
378	PUSHs ((SV *)CvPADLIST (cv));	416	PUSHs ((SV *)CvPADLIST (cv));
379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	417	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
380	PUSHs ((SV *)cv);	418	PUSHs ((SV *)cv);
381		419
382	CvDEPTH (cv) = 0;	420	CvDEPTH (cv) = 0;
383	get_padlist (cv);	421	get_padlist (aTHX_ cv);
384	}	422	}
385	}	423	}
386	}	424	}
387		425
388	if (top_si->si_type == PERLSI_MAIN)	426	if (top_si->si_type == PERLSI_MAIN)
…		…
397	}	435	}
398		436
399	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;
400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	438	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
401	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;
402	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;
403		442
404	#define VAR(name,type)c->name = PL_ ## name;	443	#define VAR(name,type)c->name = PL_ ## name;
405	# include "state.h"	444	# include "state.h"
406	#undef VAR	445	#undef VAR
…		…
410	* allocate various perl stacks. This is an exact copy	449	* allocate various perl stacks. This is an exact copy
411	* of perl.c:init_stacks, except that it uses less memory	450	* of perl.c:init_stacks, except that it uses less memory
412	* on the (sometimes correct) assumption that coroutines do	451	* on the (sometimes correct) assumption that coroutines do
413	* not usually need a lot of stackspace.	452	* not usually need a lot of stackspace.
414	*/	453	*/
415	#if PREFER_PERL_FUNCTIONS	454	#if CORO_PREFER_PERL_FUNCTIONS
416	# define coro_init_stacks init_stacks	455	# define coro_init_stacks init_stacks
417	#else	456	#else
418	static void	457	static void
419	coro_init_stacks ()	458	coro_init_stacks (pTHX)
420	{	459	{
421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	460	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));
422	PL_curstackinfo->si_type = PERLSI_MAIN;	461	PL_curstackinfo->si_type = PERLSI_MAIN;
423	PL_curstack = PL_curstackinfo->si_stack;	462	PL_curstack = PL_curstackinfo->si_stack;
424	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	463	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
…		…
458		497
459	/*	498	/*
460	* destroy the stacks, the callchain etc...	499	* destroy the stacks, the callchain etc...
461	*/	500	*/
462	static void	501	static void
463	coro_destroy_stacks ()	502	coro_destroy_stacks (pTHX)
464	{	503	{
465	if (!IN_DESTRUCT)	504	if (!IN_DESTRUCT)
466	{	505	{
467	/* restore all saved variables and stuff */	506	/* restore all saved variables and stuff */
468	LEAVE_SCOPE (0);	507	LEAVE_SCOPE (0);
…		…
470		509
471	/* free all temporaries */	510	/* free all temporaries */
472	FREETMPS;	511	FREETMPS;
473	assert (PL_tmps_ix == -1);	512	assert (PL_tmps_ix == -1);
474		513
		514	/* unwind all extra stacks */
475	POPSTACK_TO (PL_mainstack);	515	POPSTACK_TO (PL_mainstack);
		516
		517	/* unwind main stack */
		518	dounwind (-1);
476	}	519	}
477		520
478	while (PL_curstackinfo->si_next)	521	while (PL_curstackinfo->si_next)
479	PL_curstackinfo = PL_curstackinfo->si_next;	522	PL_curstackinfo = PL_curstackinfo->si_next;
480		523
…		…
497	#if !PERL_VERSION_ATLEAST (5,9,0)	540	#if !PERL_VERSION_ATLEAST (5,9,0)
498	Safefree (PL_retstack);	541	Safefree (PL_retstack);
499	#endif	542	#endif
500	}	543	}
501		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	rss += sizeof (coro->curstackinfo);
		553	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		554	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		555
		556	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		557
		558	rss += coro->tmps_max * sizeof (SV *);
		559
		560	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		561
		562	rss += coro->scopestack_max * sizeof (I32);
		563
		564	rss += coro->savestack_max * sizeof (ANY);
		565
		566	#if !PERL_VERSION_ATLEAST (5,9,0)
		567	rss += coro->retstack_max * sizeof (OP *);
		568	#endif
		569	}
		570
		571	return rss;
		572	}
		573
		574	/ coroutine stack handling **********************************************/
		575
502	static void	576	static void
503	setup_coro (struct coro *coro)	577	setup_coro (pTHX_ struct coro *coro)
504	{	578	{
505	/*	579	/*
506	* emulate part of the perl startup here.	580	* emulate part of the perl startup here.
507	*/	581	*/
508
509	coro_init_stacks ();	582	coro_init_stacks (aTHX);
510		583
511	PL_curcop = &PL_compiling;	584	PL_curcop = &PL_compiling;
512	PL_in_eval = EVAL_NULL;	585	PL_in_eval = EVAL_NULL;
		586	PL_comppad = 0;
513	PL_curpm = 0;	587	PL_curpm = 0;
514	PL_localizing = 0;	588	PL_localizing = 0;
515	PL_dirty = 0;	589	PL_dirty = 0;
516	PL_restartop = 0;	590	PL_restartop = 0;
517		591
…		…
525	Zero (&myop, 1, LOGOP);	599	Zero (&myop, 1, LOGOP);
526	myop.op_next = Nullop;	600	myop.op_next = Nullop;
527	myop.op_flags = OPf_WANT_VOID;	601	myop.op_flags = OPf_WANT_VOID;
528		602
529	PUSHMARK (SP);	603	PUSHMARK (SP);
530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	604	XPUSHs (av_shift (GvAV (PL_defgv)));
531	PUTBACK;	605	PUTBACK;
532	PL_op = (OP *)&myop;	606	PL_op = (OP *)&myop;
533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	607	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
534	SPAGAIN;	608	SPAGAIN;
535	}	609	}
536		610
537	ENTER; /* necessary e.g. for dounwind */	611	ENTER; /* necessary e.g. for dounwind */
538	}	612	}
539		613
540	static void	614	static void
541	free_coro_mortal ()	615	free_coro_mortal (pTHX)
542	{	616	{
543	if (coro_mortal)	617	if (coro_mortal)
544	{	618	{
545	SvREFCNT_dec (coro_mortal);	619	SvREFCNT_dec (coro_mortal);
546	coro_mortal = 0;	620	coro_mortal = 0;
547	}	621	}
548	}	622	}
549		623
550	/* inject a fake call to Coro::State::_cctx_init into the execution */	624	/* inject a fake call to Coro::State::_cctx_init into the execution */
		625	/* _cctx_init should be careful, as it could be called at almost any time */
		626	/* during execution of a perl program */
551	static void NOINLINE	627	static void NOINLINE
552	prepare_cctx (coro_cctx *cctx)	628	prepare_cctx (pTHX_ coro_cctx *cctx)
553	{	629	{
554	dSP;	630	dSP;
555	LOGOP myop;	631	LOGOP myop;
556		632
557	Zero (&myop, 1, LOGOP);	633	Zero (&myop, 1, LOGOP);
…		…
566	PL_op = (OP *)&myop;	642	PL_op = (OP *)&myop;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	643	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	644	SPAGAIN;
569	}	645	}
570		646
		647	/*
		648	* this is a _very_ stripped down perl interpreter ;)
		649	*/
571	static void	650	static void
572	coro_run (void *arg)	651	coro_run (void *arg)
573	{	652	{
		653	dTHX;
		654
574	/* coro_run is the alternative tail of transfer(), so unlock here. */	655	/* coro_run is the alternative tail of transfer(), so unlock here. */
575	UNLOCK;	656	UNLOCK;
576		657
577	/*
578	* this is a _very_ stripped down perl interpreter ;)
579	*/
580	PL_top_env = &PL_start_env;	658	PL_top_env = &PL_start_env;
581		659
582	/* inject call to cctx_init */	660	/* inject a fake subroutine call to cctx_init */
583	prepare_cctx ((coro_cctx *)arg);	661	prepare_cctx (aTHX_ (coro_cctx *)arg);
584		662
585	/* somebody will hit me for both perl_run and PL_restartop */	663	/* somebody or something will hit me for both perl_run and PL_restartop */
586	PL_restartop = PL_op;	664	PL_restartop = PL_op;
587	perl_run (PL_curinterp);	665	perl_run (PL_curinterp);
588		666
589	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	667	/*
590	abort ();	668	* If perl-run returns we assume exit() was being called or the coro
		669	* fell off the end, which seems to be the only valid (non-bug)
		670	* reason for perl_run to return. We try to exit by jumping to the
		671	* bootstrap-time "top" top_env, as we cannot restore the "main"
		672	* coroutine as Coro has no such concept
		673	*/
		674	PL_top_env = main_top_env;
		675	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
591	}	676	}
592		677
593	static coro_cctx *	678	static coro_cctx *
594	cctx_new ()	679	cctx_new ()
595	{	680	{
596	coro_cctx *cctx;	681	coro_cctx *cctx;
		682	void *stack_start;
		683	size_t stack_size;
597		684
598	++cctx_count;	685	++cctx_count;
599		686
600	Newz (0, cctx, 1, coro_cctx);	687	Newz (0, cctx, 1, coro_cctx);
601		688
602	#if HAVE_MMAP	689	#if HAVE_MMAP
603		690
604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	691	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
605	/* mmap supposedly does allocate-on-write for us */	692	/* mmap supposedly does allocate-on-write for us */
606	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);	693	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC\|PROT_READ\|PROT_WRITE, MAP_PRIVATE\|MAP_ANONYMOUS, 0, 0);
607		694
608	if (cctx->sptr == (void *)-1)	695	if (cctx->sptr != (void *)-1)
609	{
610	perror ("FATAL: unable to mmap stack for coroutine");
611	_exit (EXIT_FAILURE);
612	}	696	{
613
614	# if STACKGUARD	697	# if CORO_STACKGUARD
615	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	698	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
616	# endif	699	# endif
		700	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		701	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		702	cctx->mapped = 1;
		703	}
		704	else
		705	#endif
		706	{
		707	cctx->ssize = coro_stacksize * (long)sizeof (long);
		708	New (0, cctx->sptr, coro_stacksize, long);
617		709
618	#else
619
620	cctx->ssize = STACKSIZE * (long)sizeof (long);
621	New (0, cctx->sptr, STACKSIZE, long);
622
623	if (!cctx->sptr)	710	if (!cctx->sptr)
624	{	711	{
625	perror ("FATAL: unable to malloc stack for coroutine");	712	perror ("FATAL: unable to allocate stack for coroutine");
626	_exit (EXIT_FAILURE);	713	_exit (EXIT_FAILURE);
627	}	714	}
628		715
629	#endif	716	stack_start = cctx->sptr;
		717	stack_size = cctx->ssize;
		718	}
630		719
631	#if USE_VALGRIND	720	REGISTER_STACK (cctx, (char )stack_start, (char )stack_start + stack_size);
632	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
633	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
634	cctx->ssize + (char *)cctx->sptr
635	);
636	#endif
637
638	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	721	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
639		722
640	return cctx;	723	return cctx;
641	}	724	}
642		725
643	static void	726	static void
…		…
646	if (!cctx)	729	if (!cctx)
647	return;	730	return;
648		731
649	--cctx_count;	732	--cctx_count;
650		733
651	#if USE_VALGRIND	734	#if CORO_USE_VALGRIND
652	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	735	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
653	#endif	736	#endif
654		737
655	#if HAVE_MMAP	738	#if HAVE_MMAP
		739	if (cctx->mapped)
656	munmap (cctx->sptr, cctx->ssize);	740	munmap (cctx->sptr, cctx->ssize);
657	#else	741	else
		742	#endif
658	Safefree (cctx->sptr);	743	Safefree (cctx->sptr);
659	#endif
660		744
661	Safefree (cctx);	745	Safefree (cctx);
662	}	746	}
663		747
664	static coro_cctx *	748	static coro_cctx *
665	cctx_get ()	749	cctx_get (pTHX)
666	{	750	{
667	coro_cctx *cctx;
668
669	if (cctx_first)	751	while (cctx_first)
670	{	752	{
671	cctx = cctx_first;	753	coro_cctx *cctx = cctx_first;
672	cctx_first = cctx->next;	754	cctx_first = cctx->next;
673	--cctx_idle;	755	--cctx_idle;
		756
		757	if (cctx->ssize >= coro_stacksize)
		758	return cctx;
		759
		760	cctx_destroy (cctx);
674	}	761	}
675	else	762
676	{
677	cctx = cctx_new ();
678	PL_op = PL_op->op_next;	763	PL_op = PL_op->op_next;
679	}
680
681	return cctx;	764	return cctx_new ();
682	}	765	}
683		766
684	static void	767	static void
685	cctx_put (coro_cctx *cctx)	768	cctx_put (coro_cctx *cctx)
686	{	769	{
…		…
698	++cctx_idle;	781	++cctx_idle;
699	cctx->next = cctx_first;	782	cctx->next = cctx_first;
700	cctx_first = cctx;	783	cctx_first = cctx;
701	}	784	}
702		785
		786	/ coroutine switching ***************************************************/
		787
703	/* never call directly, always through the coro_state_transfer global variable */	788	/* never call directly, always through the coro_state_transfer global variable */
704	static void NOINLINE	789	static void NOINLINE
705	transfer (struct coro prev, struct coro next)	790	transfer (pTHX_ struct coro prev, struct coro next)
706	{	791	{
707	dSTACKLEVEL;	792	dSTACKLEVEL;
708		793
709	/* sometimes transfer is only called to set idle_sp */	794	/* sometimes transfer is only called to set idle_sp */
710	if (!next)	795	if (!next)
711	{	796	{
712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	797	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
713	assert (((coro_cctx )prev)->top_env = PL_top_env); / just for the side effetc when assert is enabled */	798	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */
714	}	799	}
715	else if (prev != next)	800	else if (prev != next)
716	{	801	{
717	coro_cctx *prev__cctx;	802	coro_cctx *prev__cctx;
718		803
…		…
730	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");	815	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
731		816
732	if (next->flags & CF_RUNNING)	817	if (next->flags & CF_RUNNING)
733	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	818	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
734		819
		820	if (next->flags & CF_DESTROYED)
		821	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		822
735	prev->flags &= ~CF_RUNNING;	823	prev->flags &= ~CF_RUNNING;
736	next->flags \|= CF_RUNNING;	824	next->flags \|= CF_RUNNING;
737		825
738	LOCK;	826	LOCK;
739		827
740	if (next->flags & CF_NEW)	828	if (next->flags & CF_NEW)
741	{	829	{
742	/* need to start coroutine */	830	/* need to start coroutine */
743	next->flags &= ~CF_NEW;	831	next->flags &= ~CF_NEW;
744	/* first get rid of the old state */	832	/* first get rid of the old state */
745	save_perl (prev);	833	save_perl (aTHX_ prev);
746	/* setup coroutine call */	834	/* setup coroutine call */
747	setup_coro (next);	835	setup_coro (aTHX_ next);
748	/* need a new stack */	836	/* need a new stack */
749	assert (!next->cctx);	837	assert (!next->cctx);
750	}	838	}
751	else	839	else
752	{	840	{
753	/* coroutine already started */	841	/* coroutine already started */
754	save_perl (prev);	842	save_perl (aTHX_ prev);
755	load_perl (next);	843	load_perl (aTHX_ next);
756	}	844	}
757		845
758	prev__cctx = prev->cctx;	846	prev__cctx = prev->cctx;
759		847
760	/* possibly "free" the cctx */	848	/* possibly "free" the cctx */
761	if (prev__cctx->idle_sp == STACKLEVEL)	849	if (prev__cctx->idle_sp == STACKLEVEL)
762	{	850	{
763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	851	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764	assert (PL_top_env == prev__cctx->top_env);	852	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765		853
766	prev->cctx = 0;	854	prev->cctx = 0;
767		855
768	cctx_put (prev__cctx);	856	cctx_put (prev__cctx);
769	prev__cctx->inuse = 0;	857	prev__cctx->inuse = 0;
770	}	858	}
771		859
772	if (!next->cctx)	860	if (!next->cctx)
773	{	861	{
774	next->cctx = cctx_get ();	862	next->cctx = cctx_get (aTHX);
775	assert (!next->cctx->inuse);	863	assert (!next->cctx->inuse);
776	next->cctx->inuse = 1;	864	next->cctx->inuse = 1;
777	}	865	}
778		866
779	if (prev__cctx != next->cctx)	867	if (prev__cctx != next->cctx)
…		…
781	prev__cctx->top_env = PL_top_env;	869	prev__cctx->top_env = PL_top_env;
782	PL_top_env = next->cctx->top_env;	870	PL_top_env = next->cctx->top_env;
783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	871	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
784	}	872	}
785		873
786	free_coro_mortal ();	874	free_coro_mortal (aTHX);
787
788	UNLOCK;	875	UNLOCK;
789	}	876	}
790	}	877	}
791		878
792	struct transfer_args	879	struct transfer_args
793	{	880	{
794	struct coro prev, next;	881	struct coro prev, next;
795	};	882	};
796		883
797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	884	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
798		885
		886	/ high level stuff ******************************************************/
		887
799	static void	888	static int
800	coro_state_destroy (struct coro *coro)	889	coro_state_destroy (pTHX_ struct coro *coro)
801	{	890	{
802	if (coro->refcnt--)	891	if (coro->flags & CF_DESTROYED)
803	return;	892	return 0;
		893
		894	coro->flags \|= CF_DESTROYED;
		895
		896	if (coro->flags & CF_READY)
		897	{
		898	/* reduce nready, as destroying a ready coro effectively unreadies it */
		899	/* alternative: look through all ready queues and remove the coro */
		900	LOCK;
		901	--coro_nready;
		902	UNLOCK;
		903	}
		904	else
		905	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
804		906
805	if (coro->mainstack && coro->mainstack != main_mainstack)	907	if (coro->mainstack && coro->mainstack != main_mainstack)
806	{	908	{
807	struct coro temp;	909	struct coro temp;
		910
		911	assert (!(coro->flags & CF_RUNNING));
		912
808	Zero (&temp, 1, struct coro);	913	Zero (&temp, 1, struct coro);
809	temp.save = CORO_SAVE_ALL;	914	temp.save = CORO_SAVE_ALL;
810		915
811	if (coro->flags & CF_RUNNING)	916	if (coro->flags & CF_RUNNING)
812	croak ("FATAL: tried to destroy currently running coroutine");	917	croak ("FATAL: tried to destroy currently running coroutine");
813		918
814	save_perl (&temp);	919	save_perl (aTHX_ &temp);
815	load_perl (coro);	920	load_perl (aTHX_ coro);
816		921
817	coro_destroy_stacks ();	922	coro_destroy_stacks (aTHX);
818		923
819	load_perl (&temp); /* this will get rid of defsv etc.. */	924	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
820		925
821	coro->mainstack = 0;	926	coro->mainstack = 0;
822	}	927	}
823		928
824	cctx_destroy (coro->cctx);	929	cctx_destroy (coro->cctx);
825	SvREFCNT_dec (coro->args);	930	SvREFCNT_dec (coro->args);
826	Safefree (coro);	931
		932	if (coro->next) coro->next->prev = coro->prev;
		933	if (coro->prev) coro->prev->next = coro->next;
		934	if (coro == first) first = coro->next;
		935
		936	return 1;
827	}	937	}
828		938
829	static int	939	static int
830	coro_state_clear (pTHX_ SV sv, MAGIC mg)	940	coro_state_free (pTHX_ SV sv, MAGIC mg)
831	{	941	{
832	struct coro coro = (struct coro )mg->mg_ptr;	942	struct coro coro = (struct coro )mg->mg_ptr;
833	mg->mg_ptr = 0;	943	mg->mg_ptr = 0;
834		944
		945	coro->hv = 0;
		946
		947	if (--coro->refcnt < 0)
		948	{
835	coro_state_destroy (coro);	949	coro_state_destroy (aTHX_ coro);
		950	Safefree (coro);
		951	}
836		952
837	return 0;	953	return 0;
838	}	954	}
839		955
840	static int	956	static int
…		…
847	return 0;	963	return 0;
848	}	964	}
849		965
850	static MGVTBL coro_state_vtbl = {	966	static MGVTBL coro_state_vtbl = {
851	0, 0, 0, 0,	967	0, 0, 0, 0,
852	coro_state_clear,	968	coro_state_free,
853	0,	969	0,
854	#ifdef MGf_DUP	970	#ifdef MGf_DUP
855	coro_state_dup,	971	coro_state_dup,
856	#else	972	#else
857	# define MGf_DUP 0	973	# define MGf_DUP 0
858	#endif	974	#endif
859	};	975	};
860		976
861	static struct coro *	977	static struct coro *
862	SvSTATE (SV *coro)	978	SvSTATE_ (pTHX_ SV *coro)
863	{	979	{
864	HV *stash;	980	HV *stash;
865	MAGIC *mg;	981	MAGIC *mg;
866		982
867	if (SvROK (coro))	983	if (SvROK (coro))
…		…
873	/* very slow, but rare, check */	989	/* very slow, but rare, check */
874	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	990	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
875	croak ("Coro::State object required");	991	croak ("Coro::State object required");
876	}	992	}
877		993
878	mg = SvMAGIC (coro);	994	mg = CORO_MAGIC (coro);
879	assert (mg->mg_type == PERL_MAGIC_ext);
880	return (struct coro *)mg->mg_ptr;	995	return (struct coro *)mg->mg_ptr;
881	}	996	}
882		997
		998	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		999
883	static void	1000	static void
884	prepare_transfer (struct transfer_args ta, SV prev_sv, SV *next_sv)	1001	prepare_transfer (pTHX_ struct transfer_args ta, SV prev_sv, SV *next_sv)
885	{	1002	{
886	ta->prev = SvSTATE (prev_sv);	1003	ta->prev = SvSTATE (prev_sv);
887	ta->next = SvSTATE (next_sv);	1004	ta->next = SvSTATE (next_sv);
888	}	1005	}
889		1006
890	static void	1007	static void
891	api_transfer (SV prev_sv, SV next_sv)	1008	api_transfer (SV prev_sv, SV next_sv)
892	{	1009	{
		1010	dTHX;
893	struct transfer_args ta;	1011	struct transfer_args ta;
894		1012
895	prepare_transfer (&ta, prev_sv, next_sv);	1013	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
896	TRANSFER (ta);	1014	TRANSFER (ta);
897	}	1015	}
898		1016
899	static int	1017	static int
900	api_save (SV *coro_sv, int new_save)	1018	api_save (SV *coro_sv, int new_save)
901	{	1019	{
		1020	dTHX;
902	struct coro *coro = SvSTATE (coro_sv);	1021	struct coro *coro = SvSTATE (coro_sv);
903	int old_save = coro->save;	1022	int old_save = coro->save;
904		1023
905	if (new_save >= 0)	1024	if (new_save >= 0)
906	coro->save = new_save;	1025	coro->save = new_save;
…		…
908	return old_save;	1027	return old_save;
909	}	1028	}
910		1029
911	/ Coro ******************************************************************/	1030	/ Coro ******************************************************************/
912		1031
913	#define PRIO_MAX 3
914	#define PRIO_HIGH 1
915	#define PRIO_NORMAL 0
916	#define PRIO_LOW -1
917	#define PRIO_IDLE -3
918	#define PRIO_MIN -4
919
920	/* for Coro.pm */
921	static SV *coro_current;
922	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
923	static int coro_nready;
924
925	static void	1032	static void
926	coro_enq (SV *coro_sv)	1033	coro_enq (pTHX_ SV *coro_sv)
927	{	1034	{
928	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1035	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
929	coro_nready++;
930	}	1036	}
931		1037
932	static SV *	1038	static SV *
933	coro_deq (int min_prio)	1039	coro_deq (pTHX_ int min_prio)
934	{	1040	{
935	int prio = PRIO_MAX - PRIO_MIN;	1041	int prio = PRIO_MAX - PRIO_MIN;
936		1042
937	min_prio -= PRIO_MIN;	1043	min_prio -= PRIO_MIN;
938	if (min_prio < 0)	1044	if (min_prio < 0)
939	min_prio = 0;	1045	min_prio = 0;
940		1046
941	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1047	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
942	if (AvFILLp (coro_ready [prio]) >= 0)	1048	if (AvFILLp (coro_ready [prio]) >= 0)
943	{
944	coro_nready--;
945	return av_shift (coro_ready [prio]);	1049	return av_shift (coro_ready [prio]);
946	}
947		1050
948	return 0;	1051	return 0;
949	}	1052	}
950		1053
951	static int	1054	static int
952	api_ready (SV *coro_sv)	1055	api_ready (SV *coro_sv)
953	{	1056	{
		1057	dTHX;
954	struct coro *coro;	1058	struct coro *coro;
955		1059
956	if (SvROK (coro_sv))	1060	if (SvROK (coro_sv))
957	coro_sv = SvRV (coro_sv);	1061	coro_sv = SvRV (coro_sv);
958		1062
…		…
962	return 0;	1066	return 0;
963		1067
964	coro->flags \|= CF_READY;	1068	coro->flags \|= CF_READY;
965		1069
966	LOCK;	1070	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1071	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1072	++coro_nready;
968	UNLOCK;	1073	UNLOCK;
969		1074
970	return 1;	1075	return 1;
971	}	1076	}
972		1077
973	static int	1078	static int
974	api_is_ready (SV *coro_sv)	1079	api_is_ready (SV *coro_sv)
975	{	1080	{
		1081	dTHX;
976	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1082	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1083	}
978		1084
979	static void	1085	static void
980	prepare_schedule (struct transfer_args *ta)	1086	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1087	{
982	SV prev, next;	1088	SV prev_sv, next_sv;
983		1089
984	for (;;)	1090	for (;;)
985	{	1091	{
986	LOCK;	1092	LOCK;
987	next = coro_deq (PRIO_MIN);	1093	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1094
		1095	/* nothing to schedule: call the idle handler */
		1096	if (!next_sv)
		1097	{
		1098	dSP;
		1099	UNLOCK;
		1100
		1101	ENTER;
		1102	SAVETMPS;
		1103
		1104	PUSHMARK (SP);
		1105	PUTBACK;
		1106	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1107
		1108	FREETMPS;
		1109	LEAVE;
		1110	continue;
		1111	}
		1112
		1113	ta->next = SvSTATE (next_sv);
		1114
		1115	/* cannot transfer to destroyed coros, skip and look for next */
		1116	if (ta->next->flags & CF_DESTROYED)
		1117	{
		1118	UNLOCK;
		1119	SvREFCNT_dec (next_sv);
		1120	/* coro_nready is already taken care of by destroy */
		1121	continue;
		1122	}
		1123
		1124	--coro_nready;
988	UNLOCK;	1125	UNLOCK;
989
990	if (next)
991	break;	1126	break;
992
993	{
994	dSP;
995
996	ENTER;
997	SAVETMPS;
998
999	PUSHMARK (SP);
1000	PUTBACK;
1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002
1003	FREETMPS;
1004	LEAVE;
1005	}	1127	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1128
1011	/* free this only after the transfer */	1129	/* free this only after the transfer */
1012	LOCK;	1130	prev_sv = SvRV (coro_current);
1013	free_coro_mortal ();	1131	SvRV_set (coro_current, next_sv);
1014	UNLOCK;
1015	coro_mortal = prev;
1016
1017	assert (!SvROK(prev));//D
1018	assert (!SvROK(next));//D
1019
1020	ta->prev = SvSTATE (prev);	1132	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);
1022		1133
1023	assert (ta->next->flags & CF_READY);	1134	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;	1135	ta->next->flags &= ~CF_READY;
1025	}
1026		1136
		1137	LOCK;
		1138	free_coro_mortal (aTHX);
		1139	coro_mortal = prev_sv;
		1140	UNLOCK;
		1141	}
		1142
1027	static void	1143	static void
1028	prepare_cede (struct transfer_args *ta)	1144	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1145	{
1030	api_ready (coro_current);	1146	api_ready (coro_current);
1031	prepare_schedule (ta);	1147	prepare_schedule (aTHX_ ta);
1032	}	1148	}
1033		1149
1034	static int	1150	static int
1035	prepare_cede_notself (struct transfer_args *ta)	1151	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1036	{	1152	{
1037	if (coro_nready)	1153	if (coro_nready)
1038	{	1154	{
1039	SV *prev = SvRV (coro_current);	1155	SV *prev = SvRV (coro_current);
1040	prepare_schedule (ta);	1156	prepare_schedule (aTHX_ ta);
1041	api_ready (prev);	1157	api_ready (prev);
1042	return 1;	1158	return 1;
1043	}	1159	}
1044	else	1160	else
1045	return 0;	1161	return 0;
1046	}	1162	}
1047		1163
1048	static void	1164	static void
1049	api_schedule (void)	1165	api_schedule (void)
1050	{	1166	{
		1167	dTHX;
1051	struct transfer_args ta;	1168	struct transfer_args ta;
1052		1169
1053	prepare_schedule (&ta);	1170	prepare_schedule (aTHX_ &ta);
1054	TRANSFER (ta);	1171	TRANSFER (ta);
1055	}	1172	}
1056		1173
1057	static int	1174	static int
1058	api_cede (void)	1175	api_cede (void)
1059	{	1176	{
		1177	dTHX;
1060	struct transfer_args ta;	1178	struct transfer_args ta;
1061		1179
1062	prepare_cede (&ta);	1180	prepare_cede (aTHX_ &ta);
1063		1181
1064	if (ta.prev != ta.next)	1182	if (ta.prev != ta.next)
1065	{	1183	{
1066	TRANSFER (ta);	1184	TRANSFER (ta);
1067	return 1;	1185	return 1;
…		…
1071	}	1189	}
1072		1190
1073	static int	1191	static int
1074	api_cede_notself (void)	1192	api_cede_notself (void)
1075	{	1193	{
		1194	dTHX;
1076	struct transfer_args ta;	1195	struct transfer_args ta;
1077		1196
1078	if (prepare_cede_notself (&ta))	1197	if (prepare_cede_notself (aTHX_ &ta))
1079	{	1198	{
1080	TRANSFER (ta);	1199	TRANSFER (ta);
1081	return 1;	1200	return 1;
1082	}	1201	}
1083	else	1202	else
…		…
1099		1218
1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1219	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1101	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1220	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1102	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1221	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1103	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1222	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1223	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1224	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1104	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1225	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1105		1226
1106	main_mainstack = PL_mainstack;	1227	main_mainstack = PL_mainstack;
		1228	main_top_env = PL_top_env;
		1229
		1230	while (main_top_env->je_prev)
		1231	main_top_env = main_top_env->je_prev;
1107		1232
1108	coroapi.ver = CORO_API_VERSION;	1233	coroapi.ver = CORO_API_VERSION;
1109	coroapi.transfer = api_transfer;	1234	coroapi.transfer = api_transfer;
1110		1235
1111	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1236	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1119	HV *hv;	1244	HV *hv;
1120	int i;	1245	int i;
1121		1246
1122	Newz (0, coro, 1, struct coro);	1247	Newz (0, coro, 1, struct coro);
1123	coro->args = newAV ();	1248	coro->args = newAV ();
1124	coro->save = CORO_SAVE_ALL;	1249	coro->save = CORO_SAVE_DEF;
1125	coro->flags = CF_NEW;	1250	coro->flags = CF_NEW;
1126		1251
		1252	if (first) first->prev = coro;
		1253	coro->next = first;
		1254	first = coro;
		1255
1127	hv = newHV ();	1256	coro->hv = hv = newHV ();
1128	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;	1257	sv_magicext ((SV )hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char )coro, 0)->mg_flags \|= MGf_DUP;
1129	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1258	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1130		1259
1131	for (i = 1; i < items; i++)	1260	for (i = 1; i < items; i++)
1132	av_push (coro->args, newSVsv (ST (i)));	1261	av_push (coro->args, newSVsv (ST (i)));
…		…
1136		1265
1137	int	1266	int
1138	save (SV *coro, int new_save = -1)	1267	save (SV *coro, int new_save = -1)
1139	CODE:	1268	CODE:
1140	RETVAL = api_save (coro, new_save);	1269	RETVAL = api_save (coro, new_save);
		1270	OUTPUT:
		1271	RETVAL
		1272
		1273	int
		1274	save_also (SV *coro_sv, int save_also)
		1275	CODE:
		1276	{
		1277	struct coro *coro = SvSTATE (coro_sv);
		1278	RETVAL = coro->save;
		1279	coro->save \|= save_also;
		1280	}
1141	OUTPUT:	1281	OUTPUT:
1142	RETVAL	1282	RETVAL
1143		1283
1144	void	1284	void
1145	_set_stacklevel (...)	1285	_set_stacklevel (...)
…		…
1161		1301
1162	case 1:	1302	case 1:
1163	if (items != 2)	1303	if (items != 2)
1164	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1304	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1165		1305
1166	prepare_transfer (&ta, ST (0), ST (1));	1306	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1167	break;	1307	break;
1168		1308
1169	case 2:	1309	case 2:
1170	prepare_schedule (&ta);	1310	prepare_schedule (aTHX_ &ta);
1171	break;	1311	break;
1172		1312
1173	case 3:	1313	case 3:
1174	prepare_cede (&ta);	1314	prepare_cede (aTHX_ &ta);
1175	break;	1315	break;
1176		1316
1177	case 4:	1317	case 4:
1178	if (!prepare_cede_notself (&ta))	1318	if (!prepare_cede_notself (aTHX_ &ta))
1179	XSRETURN_EMPTY;	1319	XSRETURN_EMPTY;
1180		1320
1181	break;	1321	break;
1182	}	1322	}
1183		1323
1184	BARRIER;	1324	BARRIER;
1185	TRANSFER (ta);	1325	TRANSFER (ta);
1186	}
1187		1326
1188	void	1327	if (GIMME_V != G_VOID && ta.next != ta.prev)
1189	_clone_state_from (SV dst, SV src)	1328	XSRETURN_YES;
		1329	}
		1330
		1331	bool
		1332	_destroy (SV *coro_sv)
1190	CODE:	1333	CODE:
1191	{	1334	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1192	struct coro *coro_src = SvSTATE (src);	1335	OUTPUT:
1193		1336	RETVAL
1194	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1195
1196	++coro_src->refcnt;
1197	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags \|= MGf_DUP;
1198	}
1199		1337
1200	void	1338	void
1201	_exit (code)	1339	_exit (code)
1202	int code	1340	int code
1203	PROTOTYPE: $	1341	PROTOTYPE: $
1204	CODE:	1342	CODE:
1205	_exit (code);	1343	_exit (code);
1206		1344
1207	int	1345	int
		1346	cctx_stacksize (int new_stacksize = 0)
		1347	CODE:
		1348	RETVAL = coro_stacksize;
		1349	if (new_stacksize)
		1350	coro_stacksize = new_stacksize;
		1351	OUTPUT:
		1352	RETVAL
		1353
		1354	int
1208	cctx_count ()	1355	cctx_count ()
1209	CODE:	1356	CODE:
1210	RETVAL = cctx_count;	1357	RETVAL = cctx_count;
1211	OUTPUT:	1358	OUTPUT:
1212	RETVAL	1359	RETVAL
…		…
1215	cctx_idle ()	1362	cctx_idle ()
1216	CODE:	1363	CODE:
1217	RETVAL = cctx_idle;	1364	RETVAL = cctx_idle;
1218	OUTPUT:	1365	OUTPUT:
1219	RETVAL	1366	RETVAL
		1367
		1368	void
		1369	list ()
		1370	PPCODE:
		1371	{
		1372	struct coro *coro;
		1373	for (coro = first; coro; coro = coro->next)
		1374	if (coro->hv)
		1375	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1376	}
		1377
		1378	void
		1379	_eval (Coro::State coro, SV *coderef)
		1380	CODE:
		1381	{
		1382	if (coro->mainstack)
		1383	{
		1384	struct coro temp;
		1385	Zero (&temp, 1, struct coro);
		1386	temp.save = CORO_SAVE_ALL;
		1387
		1388	if (!(coro->flags & CF_RUNNING))
		1389	{
		1390	save_perl (aTHX_ &temp);
		1391	load_perl (aTHX_ coro);
		1392	}
		1393
		1394	{
		1395	dSP;
		1396	ENTER;
		1397	SAVETMPS;
		1398	PUSHMARK (SP);
		1399	PUTBACK;
		1400	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
		1401	SPAGAIN;
		1402	FREETMPS;
		1403	LEAVE;
		1404	PUTBACK;
		1405	}
		1406
		1407	if (!(coro->flags & CF_RUNNING))
		1408	{
		1409	save_perl (aTHX_ coro);
		1410	load_perl (aTHX_ &temp);
		1411	}
		1412	}
		1413	}
		1414
		1415	SV *
		1416	is_ready (Coro::State coro)
		1417	PROTOTYPE: $
		1418	ALIAS:
		1419	is_ready = CF_READY
		1420	is_running = CF_RUNNING
		1421	is_new = CF_NEW
		1422	is_destroyed = CF_DESTROYED
		1423	CODE:
		1424	RETVAL = boolSV (coro->flags & ix);
		1425	OUTPUT:
		1426	RETVAL
		1427
		1428	IV
		1429	rss (Coro::State coro)
		1430	PROTOTYPE: $
		1431	CODE:
		1432	RETVAL = coro_rss (coro);
		1433	OUTPUT:
		1434	RETVAL
		1435
1220		1436
1221	MODULE = Coro::State PACKAGE = Coro	1437	MODULE = Coro::State PACKAGE = Coro
1222		1438
1223	BOOT:	1439	BOOT:
1224	{	1440	{
…		…
1292	CODE:	1508	CODE:
1293	RETVAL = boolSV (api_ready (self));	1509	RETVAL = boolSV (api_ready (self));
1294	OUTPUT:	1510	OUTPUT:
1295	RETVAL	1511	RETVAL
1296		1512
1297	SV *
1298	is_ready (SV *self)
1299	PROTOTYPE: $
1300	CODE:
1301	RETVAL = boolSV (api_is_ready (self));
1302	OUTPUT:
1303	RETVAL
1304
1305	int	1513	int
1306	nready (...)	1514	nready (...)
1307	PROTOTYPE:	1515	PROTOTYPE:
1308	CODE:	1516	CODE:
1309	RETVAL = coro_nready;	1517	RETVAL = coro_nready;

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Comparing Coro/Coro/State.xs (file contents): Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs. Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC

Diff Legend

Comparing Coro/Coro/State.xs (file contents):
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs.
Revision 1.152 by root, Thu Sep 20 12:02:25 2007 UTC