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

Comparing Coro/Coro/State.xs (file contents):
Revision 1.316 by root, Thu Nov 20 06:01:40 2008 UTC vs.
Revision 1.339 by root, Mon Dec 15 00:28:30 2008 UTC

…		…
101	# define CvISXSUB_on(cv) (void)cv	101	# define CvISXSUB_on(cv) (void)cv
102	#endif	102	#endif
103	#ifndef CvISXSUB	103	#ifndef CvISXSUB
104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)	104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105	#endif	105	#endif
		106	#ifndef Newx
		107	# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
		108	#endif
106		109
107	/* 5.8.7 */	110	/* 5.8.7 */
108	#ifndef SvRV_set	111	#ifndef SvRV_set
109	# define SvRV_set(s,v) SvRV(s) = (v)	112	# define SvRV_set(s,v) SvRV(s) = (v)
110	#endif	113	#endif
…		…
130	#else	133	#else
131	# define dSTACKLEVEL volatile void *stacklevel	134	# define dSTACKLEVEL volatile void *stacklevel
132	# define STACKLEVEL ((void *)&stacklevel)	135	# define STACKLEVEL ((void *)&stacklevel)
133	#endif	136	#endif
134		137
135	#define IN_DESTRUCT (PL_main_cv == Nullcv)	138	#define IN_DESTRUCT PL_dirty
136		139
137	#if __GNUC__ >= 3	140	#if __GNUC__ >= 3
138	# define attribute(x) __attribute__(x)	141	# define attribute(x) __attribute__(x)
139	# define expect(expr,value) __builtin_expect ((expr),(value))	142	# define expect(expr,value) __builtin_expect ((expr),(value))
140	# define INLINE static inline	143	# define INLINE static inline
…		…
170	static AV main_mainstack; / used to differentiate between $main and others */	173	static AV main_mainstack; / used to differentiate between $main and others */
171	static JMPENV *main_top_env;	174	static JMPENV *main_top_env;
172	static HV coro_state_stash, coro_stash;	175	static HV coro_state_stash, coro_stash;
173	static volatile SV coro_mortal; / will be freed/thrown after next transfer */	176	static volatile SV coro_mortal; / will be freed/thrown after next transfer */
174		177
		178	static AV av_destroy; / destruction queue */
		179	static SV sv_manager; / the manager coro */
		180	static SV sv_idle; / $Coro::idle */
		181
175	static GV irsgv; / $/ */	182	static GV irsgv; / $/ */
176	static GV stdoutgv; / STDOUT /	183	static GV stdoutgv; / STDOUT /
177	static SV *rv_diehook;	184	static SV *rv_diehook;
178	static SV *rv_warnhook;	185	static SV *rv_warnhook;
179	static HV hv_sig; / %SIG */	186	static HV hv_sig; / %SIG */
180		187
181	/* async_pool helper stuff */	188	/* async_pool helper stuff */
182	static SV *sv_pool_rss;	189	static SV *sv_pool_rss;
183	static SV *sv_pool_size;	190	static SV *sv_pool_size;
184	static SV *sv_async_pool_idle;	191	static SV sv_async_pool_idle; / description string */
185	static AV *av_async_pool;	192	static AV av_async_pool; / idle pool */
186	static SV *sv_Coro;	193	static SV sv_Coro; / class string */
187	static CV *cv_pool_handler;	194	static CV *cv_pool_handler;
188	static CV *cv_coro_state_new;	195	static CV *cv_coro_state_new;
189		196
190	/* Coro::AnyEvent */	197	/* Coro::AnyEvent */
191	static SV *sv_activity;	198	static SV *sv_activity;
…		…
222	int valgrind_id;	229	int valgrind_id;
223	#endif	230	#endif
224	unsigned char flags;	231	unsigned char flags;
225	} coro_cctx;	232	} coro_cctx;
226		233
		234	coro_cctx cctx_current; / the currently running cctx */
		235
		236	/*****************************************************************************/
		237
227	enum {	238	enum {
228	CF_RUNNING = 0x0001, /* coroutine is running */	239	CF_RUNNING = 0x0001, /* coroutine is running */
229	CF_READY = 0x0002, /* coroutine is ready */	240	CF_READY = 0x0002, /* coroutine is ready */
230	CF_NEW = 0x0004, /* has never been switched to */	241	CF_NEW = 0x0004, /* has never been switched to */
231	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	242	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
…		…
236	{	247	{
237	SV *defsv;	248	SV *defsv;
238	AV *defav;	249	AV *defav;
239	SV *errsv;	250	SV *errsv;
240	SV *irsgv;	251	SV *irsgv;
		252	HV *hinthv;
241	#define VAR(name,type) type name;	253	#define VAR(name,type) type name;
242	# include "state.h"	254	# include "state.h"
243	#undef VAR	255	#undef VAR
244	} perl_slots;	256	} perl_slots;
245		257
…		…
272		284
273	/* async_pool */	285	/* async_pool */
274	SV *saved_deffh;	286	SV *saved_deffh;
275	SV *invoke_cb;	287	SV *invoke_cb;
276	AV *invoke_av;	288	AV *invoke_av;
		289
		290	/* on_enter/on_leave */
		291	AV *on_enter;
		292	AV *on_leave;
277		293
278	/* linked list */	294	/* linked list */
279	struct coro next, prev;	295	struct coro next, prev;
280	};	296	};
281		297
…		…
340	INLINE CV *	356	INLINE CV *
341	coro_sv_2cv (pTHX_ SV *sv)	357	coro_sv_2cv (pTHX_ SV *sv)
342	{	358	{
343	HV *st;	359	HV *st;
344	GV *gvp;	360	GV *gvp;
345	return sv_2cv (sv, &st, &gvp, 0);	361	CV *cv = sv_2cv (sv, &st, &gvp, 0);
		362
		363	if (!cv)
		364	croak ("code reference expected");
		365
		366	return cv;
346	}	367	}
		368
		369	/*****************************************************************************/
		370	/* magic glue */
		371
		372	#define CORO_MAGIC_type_cv 26
		373	#define CORO_MAGIC_type_state PERL_MAGIC_ext
		374
		375	#define CORO_MAGIC_NN(sv, type) \
		376	(expect_true (SvMAGIC (sv)->mg_type == type) \
		377	? SvMAGIC (sv) \
		378	: mg_find (sv, type))
		379
		380	#define CORO_MAGIC(sv, type) \
		381	(expect_true (SvMAGIC (sv)) \
		382	? CORO_MAGIC_NN (sv, type) \
		383	: 0)
		384
		385	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		386	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
		387
		388	INLINE struct coro *
		389	SvSTATE_ (pTHX_ SV *coro)
		390	{
		391	HV *stash;
		392	MAGIC *mg;
		393
		394	if (SvROK (coro))
		395	coro = SvRV (coro);
		396
		397	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		398	croak ("Coro::State object required");
		399
		400	stash = SvSTASH (coro);
		401	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		402	{
		403	/* very slow, but rare, check */
		404	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		405	croak ("Coro::State object required");
		406	}
		407
		408	mg = CORO_MAGIC_state (coro);
		409	return (struct coro *)mg->mg_ptr;
		410	}
		411
		412	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		413
		414	/* faster than SvSTATE, but expects a coroutine hv */
		415	#define SvSTATE_hv(hv) ((struct coro )CORO_MAGIC_NN ((SV )hv, CORO_MAGIC_type_state)->mg_ptr)
		416	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
		417
		418	/*****************************************************************************/
		419	/* padlist management and caching */
347		420
348	static AV *	421	static AV *
349	coro_clone_padlist (pTHX_ CV *cv)	422	coro_derive_padlist (pTHX_ CV *cv)
350	{	423	{
351	AV *padlist = CvPADLIST (cv);	424	AV *padlist = CvPADLIST (cv);
352	AV newpadlist, newpad;	425	AV newpadlist, newpad;
353		426
354	newpadlist = newAV ();	427	newpadlist = newAV ();
…		…
359	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	432	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
360	#endif	433	#endif
361	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	434	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
362	--AvFILLp (padlist);	435	--AvFILLp (padlist);
363		436
364	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));	437	av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
365	av_store (newpadlist, 1, (SV *)newpad);	438	av_store (newpadlist, 1, (SV *)newpad);
366		439
367	return newpadlist;	440	return newpadlist;
368	}	441	}
369		442
370	static void	443	static void
371	free_padlist (pTHX_ AV *padlist)	444	free_padlist (pTHX_ AV *padlist)
372	{	445	{
373	/* may be during global destruction */	446	/* may be during global destruction */
374	if (SvREFCNT (padlist))	447	if (!IN_DESTRUCT)
375	{	448	{
376	I32 i = AvFILLp (padlist);	449	I32 i = AvFILLp (padlist);
377	while (i >= 0)	450
		451	while (i > 0) /* special-case index 0 */
378	{	452	{
379	SV **svp = av_fetch (padlist, i--, FALSE);	453	/* we try to be extra-careful here */
380	if (svp)	454	AV av = (AV )AvARRAY (padlist)[i--];
381	{	455	I32 j = AvFILLp (av);
382	SV *sv;	456
383	while (&PL_sv_undef != (sv = av_pop ((AV )svp)))	457	while (j >= 0)
		458	SvREFCNT_dec (AvARRAY (av)[j--]);
		459
		460	AvFILLp (av) = -1;
384	SvREFCNT_dec (sv);	461	SvREFCNT_dec (av);
385
386	SvREFCNT_dec (*svp);
387	}
388	}	462	}
389		463
		464	SvREFCNT_dec (AvARRAY (padlist)[0]);
		465
		466	AvFILLp (padlist) = -1;
390	SvREFCNT_dec ((SV*)padlist);	467	SvREFCNT_dec ((SV*)padlist);
391	}	468	}
392	}	469	}
393		470
394	static int	471	static int
…		…
403		480
404	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	481	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
405		482
406	return 0;	483	return 0;
407	}	484	}
408
409	#define CORO_MAGIC_type_cv 26
410	#define CORO_MAGIC_type_state PERL_MAGIC_ext
411		485
412	static MGVTBL coro_cv_vtbl = {	486	static MGVTBL coro_cv_vtbl = {
413	0, 0, 0, 0,	487	0, 0, 0, 0,
414	coro_cv_free	488	coro_cv_free
415	};	489	};
416
417	#define CORO_MAGIC_NN(sv, type) \
418	(expect_true (SvMAGIC (sv)->mg_type == type) \
419	? SvMAGIC (sv) \
420	: mg_find (sv, type))
421
422	#define CORO_MAGIC(sv, type) \
423	(expect_true (SvMAGIC (sv)) \
424	? CORO_MAGIC_NN (sv, type) \
425	: 0)
426
427	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
428	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
429
430	INLINE struct coro *
431	SvSTATE_ (pTHX_ SV *coro)
432	{
433	HV *stash;
434	MAGIC *mg;
435
436	if (SvROK (coro))
437	coro = SvRV (coro);
438
439	if (expect_false (SvTYPE (coro) != SVt_PVHV))
440	croak ("Coro::State object required");
441
442	stash = SvSTASH (coro);
443	if (expect_false (stash != coro_stash && stash != coro_state_stash))
444	{
445	/* very slow, but rare, check */
446	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
447	croak ("Coro::State object required");
448	}
449
450	mg = CORO_MAGIC_state (coro);
451	return (struct coro *)mg->mg_ptr;
452	}
453
454	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456	/* faster than SvSTATE, but expects a coroutine hv */
457	#define SvSTATE_hv(hv) ((struct coro )CORO_MAGIC_NN ((SV )hv, CORO_MAGIC_type_state)->mg_ptr)
458	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
459		490
460	/* the next two functions merely cache the padlists */	491	/* the next two functions merely cache the padlists */
461	static void	492	static void
462	get_padlist (pTHX_ CV *cv)	493	get_padlist (pTHX_ CV *cv)
463	{	494	{
…		…
474	CV *cp = Perl_cv_clone (aTHX_ cv);	505	CV *cp = Perl_cv_clone (aTHX_ cv);
475	CvPADLIST (cv) = CvPADLIST (cp);	506	CvPADLIST (cv) = CvPADLIST (cp);
476	CvPADLIST (cp) = 0;	507	CvPADLIST (cp) = 0;
477	SvREFCNT_dec (cp);	508	SvREFCNT_dec (cp);
478	#else	509	#else
479	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	510	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
480	#endif	511	#endif
481	}	512	}
482	}	513	}
483		514
484	static void	515	static void
…		…
491	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);	522	mg = sv_magicext ((SV )cv, (SV )newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
492		523
493	av = (AV *)mg->mg_obj;	524	av = (AV *)mg->mg_obj;
494		525
495	if (expect_false (AvFILLp (av) >= AvMAX (av)))	526	if (expect_false (AvFILLp (av) >= AvMAX (av)))
496	av_extend (av, AvMAX (av) + 1);	527	av_extend (av, AvFILLp (av) + 1);
497		528
498	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	529	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
499	}	530	}
500		531
501	/ load & save, init *****************************************************/	532	/ load & save, init *****************************************************/
		533
		534	static void
		535	on_enterleave_call (pTHX_ SV *cb);
502		536
503	static void	537	static void
504	load_perl (pTHX_ Coro__State c)	538	load_perl (pTHX_ Coro__State c)
505	{	539	{
506	perl_slots *slot = c->slot;	540	perl_slots *slot = c->slot;
507	c->slot = 0;	541	c->slot = 0;
508		542
509	PL_mainstack = c->mainstack;	543	PL_mainstack = c->mainstack;
510		544
511	GvSV (PL_defgv) = slot->defsv;	545	GvSV (PL_defgv) = slot->defsv;
512	GvAV (PL_defgv) = slot->defav;	546	GvAV (PL_defgv) = slot->defav;
513	GvSV (PL_errgv) = slot->errsv;	547	GvSV (PL_errgv) = slot->errsv;
514	GvSV (irsgv) = slot->irsgv;	548	GvSV (irsgv) = slot->irsgv;
		549	GvHV (PL_hintgv) = slot->hinthv;
515		550
516	#define VAR(name,type) PL_ ## name = slot->name;	551	#define VAR(name,type) PL_ ## name = slot->name;
517	# include "state.h"	552	# include "state.h"
518	#undef VAR	553	#undef VAR
519		554
…		…
533	PUTBACK;	568	PUTBACK;
534	}	569	}
535		570
536	slf_frame = c->slf_frame;	571	slf_frame = c->slf_frame;
537	CORO_THROW = c->except;	572	CORO_THROW = c->except;
		573
		574	if (expect_false (c->on_enter))
		575	{
		576	int i;
		577
		578	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
		579	on_enterleave_call (AvARRAY (c->on_enter)[i]);
		580	}
538	}	581	}
539		582
540	static void	583	static void
541	save_perl (pTHX_ Coro__State c)	584	save_perl (pTHX_ Coro__State c)
542	{	585	{
		586	if (expect_false (c->on_leave))
		587	{
		588	int i;
		589
		590	for (i = AvFILLp (c->on_leave); i >= 0; --i)
		591	on_enterleave_call (AvARRAY (c->on_leave)[i]);
		592	}
		593
543	c->except = CORO_THROW;	594	c->except = CORO_THROW;
544	c->slf_frame = slf_frame;	595	c->slf_frame = slf_frame;
545		596
546	{	597	{
547	dSP;	598	dSP;
…		…
605	c->mainstack = PL_mainstack;	656	c->mainstack = PL_mainstack;
606		657
607	{	658	{
608	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);	659	perl_slots slot = c->slot = (perl_slots )(cxstack + cxstack_ix + 1);
609		660
610	slot->defav = GvAV (PL_defgv);	661	slot->defav = GvAV (PL_defgv);
611	slot->defsv = DEFSV;	662	slot->defsv = DEFSV;
612	slot->errsv = ERRSV;	663	slot->errsv = ERRSV;
613	slot->irsgv = GvSV (irsgv);	664	slot->irsgv = GvSV (irsgv);
		665	slot->hinthv = GvHV (PL_hintgv);
614		666
615	#define VAR(name,type) slot->name = PL_ ## name;	667	#define VAR(name,type) slot->name = PL_ ## name;
616	# include "state.h"	668	# include "state.h"
617	#undef VAR	669	#undef VAR
618	}	670	}
…		…
745	#endif	797	#endif
746		798
747	/*	799	/*
748	* This overrides the default magic get method of %SIG elements.	800	* This overrides the default magic get method of %SIG elements.
749	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	801	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
750	* and instead of tryign to save and restore the hash elements, we just provide	802	* and instead of trying to save and restore the hash elements, we just provide
751	* readback here.	803	* readback here.
752	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
753	* not expecting this to actually change the hook. This is a potential problem
754	* when a schedule happens then, but we ignore this.
755	*/	804	*/
756	static int	805	static int
757	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)	806	coro_sigelem_get (pTHX_ SV sv, MAGIC mg)
758	{	807	{
759	const char *s = MgPV_nolen_const (mg);	808	const char *s = MgPV_nolen_const (mg);
…		…
812	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;	861	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813		862
814	if (svp)	863	if (svp)
815	{	864	{
816	SV old = svp;	865	SV old = svp;
817	*svp = newSVsv (sv);	866	*svp = SvOK (sv) ? newSVsv (sv) : 0;
818	SvREFCNT_dec (old);	867	SvREFCNT_dec (old);
819	return 0;	868	return 0;
820	}	869	}
821	}	870	}
822		871
…		…
832		881
833	static int	882	static int
834	slf_check_nop (pTHX_ struct CoroSLF *frame)	883	slf_check_nop (pTHX_ struct CoroSLF *frame)
835	{	884	{
836	return 0;	885	return 0;
		886	}
		887
		888	static int
		889	slf_check_repeat (pTHX_ struct CoroSLF *frame)
		890	{
		891	return 1;
837	}	892	}
838		893
839	static UNOP coro_setup_op;	894	static UNOP coro_setup_op;
840		895
841	static void NOINLINE /* noinline to keep it out of the transfer fast path */	896	static void NOINLINE /* noinline to keep it out of the transfer fast path */
…		…
848		903
849	PL_runops = RUNOPS_DEFAULT;	904	PL_runops = RUNOPS_DEFAULT;
850	PL_curcop = &PL_compiling;	905	PL_curcop = &PL_compiling;
851	PL_in_eval = EVAL_NULL;	906	PL_in_eval = EVAL_NULL;
852	PL_comppad = 0;	907	PL_comppad = 0;
		908	PL_comppad_name = 0;
		909	PL_comppad_name_fill = 0;
		910	PL_comppad_name_floor = 0;
853	PL_curpm = 0;	911	PL_curpm = 0;
854	PL_curpad = 0;	912	PL_curpad = 0;
855	PL_localizing = 0;	913	PL_localizing = 0;
856	PL_dirty = 0;	914	PL_dirty = 0;
857	PL_restartop = 0;	915	PL_restartop = 0;
858	#if PERL_VERSION_ATLEAST (5,10,0)	916	#if PERL_VERSION_ATLEAST (5,10,0)
859	PL_parser = 0;	917	PL_parser = 0;
860	#endif	918	#endif
		919	PL_hints = 0;
861		920
862	/* recreate the die/warn hooks */	921	/* recreate the die/warn hooks */
863	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	922	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
864	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);	923	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
865		924
866	GvSV (PL_defgv) = newSV (0);	925	GvSV (PL_defgv) = newSV (0);
867	GvAV (PL_defgv) = coro->args; coro->args = 0;	926	GvAV (PL_defgv) = coro->args; coro->args = 0;
868	GvSV (PL_errgv) = newSV (0);	927	GvSV (PL_errgv) = newSV (0);
869	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	928	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		929	GvHV (PL_hintgv) = 0;
870	PL_rs = newSVsv (GvSV (irsgv));	930	PL_rs = newSVsv (GvSV (irsgv));
871	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	931	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
872		932
873	{	933	{
874	dSP;	934	dSP;
…		…
892	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	952	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	953	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894		954
895	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	955	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896	coro_setup_op.op_next = PL_op;	956	coro_setup_op.op_next = PL_op;
897	coro_setup_op.op_type = OP_CUSTOM;	957	coro_setup_op.op_type = OP_ENTERSUB;
898	coro_setup_op.op_ppaddr = pp_slf;	958	coro_setup_op.op_ppaddr = pp_slf;
899	/* no flags etc. required, as an init function won't be called */	959	/* no flags etc. required, as an init function won't be called */
900		960
901	PL_op = (OP *)&coro_setup_op;	961	PL_op = (OP *)&coro_setup_op;
902		962
903	/* copy throw, in case it was set before coro_setup */	963	/* copy throw, in case it was set before coro_setup */
904	CORO_THROW = coro->except;	964	CORO_THROW = coro->except;
905	}	965	}
906		966
907	static void	967	static void
908	coro_destruct (pTHX_ struct coro *coro)	968	coro_unwind_stacks (pTHX)
909	{	969	{
910	if (!IN_DESTRUCT)	970	if (!IN_DESTRUCT)
911	{	971	{
912	/* restore all saved variables and stuff */	972	/* restore all saved variables and stuff */
913	LEAVE_SCOPE (0);	973	LEAVE_SCOPE (0);
…		…
921	POPSTACK_TO (PL_mainstack);	981	POPSTACK_TO (PL_mainstack);
922		982
923	/* unwind main stack */	983	/* unwind main stack */
924	dounwind (-1);	984	dounwind (-1);
925	}	985	}
		986	}
		987
		988	static void
		989	coro_destruct_perl (pTHX_ struct coro *coro)
		990	{
		991	coro_unwind_stacks (aTHX);
926		992
927	SvREFCNT_dec (GvSV (PL_defgv));	993	SvREFCNT_dec (GvSV (PL_defgv));
928	SvREFCNT_dec (GvAV (PL_defgv));	994	SvREFCNT_dec (GvAV (PL_defgv));
929	SvREFCNT_dec (GvSV (PL_errgv));	995	SvREFCNT_dec (GvSV (PL_errgv));
930	SvREFCNT_dec (PL_defoutgv);	996	SvREFCNT_dec (PL_defoutgv);
931	SvREFCNT_dec (PL_rs);	997	SvREFCNT_dec (PL_rs);
932	SvREFCNT_dec (GvSV (irsgv));	998	SvREFCNT_dec (GvSV (irsgv));
		999	SvREFCNT_dec (GvHV (PL_hintgv));
933		1000
934	SvREFCNT_dec (PL_diehook);	1001	SvREFCNT_dec (PL_diehook);
935	SvREFCNT_dec (PL_warnhook);	1002	SvREFCNT_dec (PL_warnhook);
936		1003
937	SvREFCNT_dec (coro->saved_deffh);	1004	SvREFCNT_dec (coro->saved_deffh);
…		…
955	static int	1022	static int
956	runops_trace (pTHX)	1023	runops_trace (pTHX)
957	{	1024	{
958	COP *oldcop = 0;	1025	COP *oldcop = 0;
959	int oldcxix = -2;	1026	int oldcxix = -2;
960	struct coro coro = SvSTATE_current; / trace cctx is tied to specific coro */
961	coro_cctx *cctx = coro->cctx;
962		1027
963	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	1028	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
964	{	1029	{
965	PERL_ASYNC_CHECK ();	1030	PERL_ASYNC_CHECK ();
966		1031
967	if (cctx->flags & CC_TRACE_ALL)	1032	if (cctx_current->flags & CC_TRACE_ALL)
968	{	1033	{
969	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	1034	if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
970	{	1035	{
971	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1036	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
972	SV bot, top;	1037	SV bot, top;
973	AV av = newAV (); / return values */	1038	AV av = newAV (); / return values */
974	SV **cb;	1039	SV **cb;
…		…
1011		1076
1012	if (PL_curcop != &PL_compiling)	1077	if (PL_curcop != &PL_compiling)
1013	{	1078	{
1014	SV **cb;	1079	SV **cb;
1015		1080
1016	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	1081	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1017	{	1082	{
1018	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1083	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1019		1084
1020	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1085	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1021	{	1086	{
1022	runops_proc_t old_runops = PL_runops;
1023	dSP;	1087	dSP;
1024	GV *gv = CvGV (cx->blk_sub.cv);	1088	GV *gv = CvGV (cx->blk_sub.cv);
1025	SV *fullname = sv_2mortal (newSV (0));	1089	SV *fullname = sv_2mortal (newSV (0));
1026		1090
1027	if (isGV (gv))	1091	if (isGV (gv))
…		…
1045	}	1109	}
1046		1110
1047	oldcxix = cxstack_ix;	1111	oldcxix = cxstack_ix;
1048	}	1112	}
1049		1113
1050	if (cctx->flags & CC_TRACE_LINE)	1114	if (cctx_current->flags & CC_TRACE_LINE)
1051	{	1115	{
1052	dSP;	1116	dSP;
1053		1117
1054	PL_runops = RUNOPS_DEFAULT;	1118	PL_runops = RUNOPS_DEFAULT;
1055	ENTER;	1119	ENTER;
…		…
1074		1138
1075	TAINT_NOT;	1139	TAINT_NOT;
1076	return 0;	1140	return 0;
1077	}	1141	}
1078		1142
1079	static struct coro_cctx *cctx_ssl_cctx;
1080	static struct CoroSLF cctx_ssl_frame;	1143	static struct CoroSLF cctx_ssl_frame;
1081		1144
1082	static void	1145	static void
1083	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	1146	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084	{	1147	{
1085	ta->prev = (struct coro *)cctx_ssl_cctx;
1086	ta->next = 0;	1148	ta->prev = 0;
1087	}	1149	}
1088		1150
1089	static int	1151	static int
1090	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)	1152	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091	{	1153	{
…		…
1094	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */	1156	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095	}	1157	}
1096		1158
1097	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */	1159	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1098	static void NOINLINE	1160	static void NOINLINE
1099	cctx_prepare (pTHX_ coro_cctx *cctx)	1161	cctx_prepare (pTHX)
1100	{	1162	{
1101	PL_top_env = &PL_start_env;	1163	PL_top_env = &PL_start_env;
1102		1164
1103	if (cctx->flags & CC_TRACE)	1165	if (cctx_current->flags & CC_TRACE)
1104	PL_runops = runops_trace;	1166	PL_runops = runops_trace;
1105		1167
1106	/* we already must be executing an SLF op, there is no other valid way	1168	/* we already must be executing an SLF op, there is no other valid way
1107	* that can lead to creation of a new cctx */	1169	* that can lead to creation of a new cctx */
1108	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",	1170	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));	1171	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1110		1172
1111	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */	1173	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1112	cctx_ssl_cctx = cctx;
1113	cctx_ssl_frame = slf_frame;	1174	cctx_ssl_frame = slf_frame;
1114		1175
1115	slf_frame.prepare = slf_prepare_set_stacklevel;	1176	slf_frame.prepare = slf_prepare_set_stacklevel;
1116	slf_frame.check = slf_check_set_stacklevel;	1177	slf_frame.check = slf_check_set_stacklevel;
1117	}	1178	}
…		…
1140	/* normally we would need to skip the entersub here */	1201	/* normally we would need to skip the entersub here */
1141	/* not doing so will re-execute it, which is exactly what we want */	1202	/* not doing so will re-execute it, which is exactly what we want */
1142	/* PL_nop = PL_nop->op_next */	1203	/* PL_nop = PL_nop->op_next */
1143		1204
1144	/* inject a fake subroutine call to cctx_init */	1205	/* inject a fake subroutine call to cctx_init */
1145	cctx_prepare (aTHX_ (coro_cctx *)arg);	1206	cctx_prepare (aTHX);
1146		1207
1147	/* cctx_run is the alternative tail of transfer() */	1208	/* cctx_run is the alternative tail of transfer() */
1148	transfer_tail (aTHX);	1209	transfer_tail (aTHX);
1149		1210
1150	/* somebody or something will hit me for both perl_run and PL_restartop */	1211	/* somebody or something will hit me for both perl_run and PL_restartop */
…		…
1158	/*	1219	/*
1159	* If perl-run returns we assume exit() was being called or the coro	1220	* If perl-run returns we assume exit() was being called or the coro
1160	* fell off the end, which seems to be the only valid (non-bug)	1221	* fell off the end, which seems to be the only valid (non-bug)
1161	* reason for perl_run to return. We try to exit by jumping to the	1222	* reason for perl_run to return. We try to exit by jumping to the
1162	* bootstrap-time "top" top_env, as we cannot restore the "main"	1223	* bootstrap-time "top" top_env, as we cannot restore the "main"
1163	* coroutine as Coro has no such concept	1224	* coroutine as Coro has no such concept.
		1225	* This actually isn't valid with the pthread backend, but OSes requiring
		1226	* that backend are too broken to do it in a standards-compliant way.
1164	*/	1227	*/
1165	PL_top_env = main_top_env;	1228	PL_top_env = main_top_env;
1166	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1229	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167	}	1230	}
1168	}	1231	}
…		…
1245	cctx_destroy (coro_cctx *cctx)	1308	cctx_destroy (coro_cctx *cctx)
1246	{	1309	{
1247	if (!cctx)	1310	if (!cctx)
1248	return;	1311	return;
1249		1312
		1313	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
		1314
1250	--cctx_count;	1315	--cctx_count;
1251	coro_destroy (&cctx->cctx);	1316	coro_destroy (&cctx->cctx);
1252		1317
1253	/* coro_transfer creates new, empty cctx's */	1318	/* coro_transfer creates new, empty cctx's */
1254	if (cctx->sptr)	1319	if (cctx->sptr)
…		…
1317	/* TODO: throwing up here is considered harmful */	1382	/* TODO: throwing up here is considered harmful */
1318		1383
1319	if (expect_true (prev != next))	1384	if (expect_true (prev != next))
1320	{	1385	{
1321	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))	1386	if (expect_false (!(prev->flags & (CF_RUNNING \| CF_NEW))))
1322	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1387	croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");
1323		1388
1324	if (expect_false (next->flags & CF_RUNNING))	1389	if (expect_false (next->flags & CF_RUNNING))
1325	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");	1390	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1326		1391
1327	if (expect_false (next->flags & CF_DESTROYED))	1392	if (expect_false (next->flags & CF_DESTROYED))
…		…
1339	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)	1404	transfer (pTHX_ struct coro prev, struct coro next, int force_cctx)
1340	{	1405	{
1341	dSTACKLEVEL;	1406	dSTACKLEVEL;
1342		1407
1343	/* sometimes transfer is only called to set idle_sp */	1408	/* sometimes transfer is only called to set idle_sp */
1344	if (expect_false (!next))	1409	if (expect_false (!prev))
1345	{	1410	{
1346	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1411	cctx_current->idle_sp = STACKLEVEL;
1347	assert (((coro_cctx )prev)->idle_te = PL_top_env); / just for the side-effect when asserts are enabled */	1412	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1348	}	1413	}
1349	else if (expect_true (prev != next))	1414	else if (expect_true (prev != next))
1350	{	1415	{
1351	coro_cctx *prev__cctx;	1416	coro_cctx *cctx_prev;
1352		1417
1353	if (expect_false (prev->flags & CF_NEW))	1418	if (expect_false (prev->flags & CF_NEW))
1354	{	1419	{
1355	/* create a new empty/source context */	1420	/* create a new empty/source context */
1356	prev->cctx = cctx_new_empty ();
1357	prev->flags &= ~CF_NEW;	1421	prev->flags &= ~CF_NEW;
1358	prev->flags \|= CF_RUNNING;	1422	prev->flags \|= CF_RUNNING;
1359	}	1423	}
1360		1424
1361	prev->flags &= ~CF_RUNNING;	1425	prev->flags &= ~CF_RUNNING;
…		…
1372	coro_setup (aTHX_ next);	1436	coro_setup (aTHX_ next);
1373	}	1437	}
1374	else	1438	else
1375	load_perl (aTHX_ next);	1439	load_perl (aTHX_ next);
1376		1440
1377	prev__cctx = prev->cctx;
1378
1379	/* possibly untie and reuse the cctx */	1441	/* possibly untie and reuse the cctx */
1380	if (expect_true (	1442	if (expect_true (
1381	prev__cctx->idle_sp == STACKLEVEL	1443	cctx_current->idle_sp == STACKLEVEL
1382	&& !(prev__cctx->flags & CC_TRACE)	1444	&& !(cctx_current->flags & CC_TRACE)
1383	&& !force_cctx	1445	&& !force_cctx
1384	))	1446	))
1385	{	1447	{
1386	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1448	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1387	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1449	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1388		1450
1389	prev->cctx = 0;
1390
1391	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1451	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1392	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1452	/* without this the next cctx_get might destroy the running cctx while still in use */
1393	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1453	if (expect_false (CCTX_EXPIRED (cctx_current)))
1394	if (!next->cctx)	1454	if (expect_true (!next->cctx))
1395	next->cctx = cctx_get (aTHX);	1455	next->cctx = cctx_get (aTHX);
1396		1456
1397	cctx_put (prev__cctx);	1457	cctx_put (cctx_current);
1398	}	1458	}
		1459	else
		1460	prev->cctx = cctx_current;
1399		1461
1400	++next->usecount;	1462	++next->usecount;
1401		1463
1402	if (expect_true (!next->cctx))	1464	cctx_prev = cctx_current;
1403	next->cctx = cctx_get (aTHX);	1465	cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1404		1466
1405	if (expect_false (prev__cctx != next->cctx))	1467	next->cctx = 0;
		1468
		1469	if (expect_false (cctx_prev != cctx_current))
1406	{	1470	{
1407	prev__cctx->top_env = PL_top_env;	1471	cctx_prev->top_env = PL_top_env;
1408	PL_top_env = next->cctx->top_env;	1472	PL_top_env = cctx_current->top_env;
1409	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1473	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1410	}	1474	}
1411		1475
1412	transfer_tail (aTHX);	1476	transfer_tail (aTHX);
1413	}	1477	}
1414	}	1478	}
…		…
1436	--coro_nready;	1500	--coro_nready;
1437	}	1501	}
1438	else	1502	else
1439	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */	1503	coro->flags \|= CF_READY; /* make sure it is NOT put into the readyqueue */
1440		1504
1441	if (coro->mainstack && coro->mainstack != main_mainstack)	1505	if (coro->mainstack
		1506	&& coro->mainstack != main_mainstack
		1507	&& coro->slot
		1508	&& !PL_dirty)
1442	{	1509	{
1443	struct coro temp;	1510	struct coro *current = SvSTATE_current;
1444		1511
1445	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));	1512	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1446		1513
1447	save_perl (aTHX_ &temp);	1514	save_perl (aTHX_ current);
1448	load_perl (aTHX_ coro);	1515	load_perl (aTHX_ coro);
1449		1516
1450	coro_destruct (aTHX_ coro);	1517	coro_destruct_perl (aTHX_ coro);
1451		1518
1452	load_perl (aTHX_ &temp);	1519	load_perl (aTHX_ current);
1453		1520
1454	coro->slot = 0;	1521	coro->slot = 0;
1455	}	1522	}
1456		1523
1457	cctx_destroy (coro->cctx);	1524	cctx_destroy (coro->cctx);
…		…
1569	{	1636	{
1570	struct coro *coro;	1637	struct coro *coro;
1571	SV *sv_hook;	1638	SV *sv_hook;
1572	void (*xs_hook)(void);	1639	void (*xs_hook)(void);
1573		1640
1574	if (SvROK (coro_sv))
1575	coro_sv = SvRV (coro_sv);
1576
1577	coro = SvSTATE (coro_sv);	1641	coro = SvSTATE (coro_sv);
1578		1642
1579	if (coro->flags & CF_READY)	1643	if (coro->flags & CF_READY)
1580	return 0;	1644	return 0;
1581		1645
…		…
1614	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1678	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1615	}	1679	}
1616		1680
1617	/* expects to own a reference to next->hv */	1681	/* expects to own a reference to next->hv */
1618	INLINE void	1682	INLINE void
1619	prepare_cede_to (pTHX_ struct coro_transfer_args ta, struct coro next)	1683	prepare_schedule_to (pTHX_ struct coro_transfer_args ta, struct coro next)
1620	{	1684	{
1621	SV *prev_sv = SvRV (coro_current);	1685	SV *prev_sv = SvRV (coro_current);
1622		1686
1623	ta->prev = SvSTATE_hv (prev_sv);	1687	ta->prev = SvSTATE_hv (prev_sv);
1624	ta->next = next;	1688	ta->next = next;
1625		1689
1626	TRANSFER_CHECK (*ta);	1690	TRANSFER_CHECK (*ta);
1627		1691
1628	SvRV_set (coro_current, next->hv);	1692	SvRV_set (coro_current, (SV *)next->hv);
1629		1693
1630	free_coro_mortal (aTHX);	1694	free_coro_mortal (aTHX);
1631	coro_mortal = prev_sv;	1695	coro_mortal = prev_sv;
1632	}	1696	}
1633		1697
…		…
1636	{	1700	{
1637	for (;;)	1701	for (;;)
1638	{	1702	{
1639	SV *next_sv = coro_deq (aTHX);	1703	SV *next_sv = coro_deq (aTHX);
1640		1704
1641	if (expect_false (!next_sv))	1705	if (expect_true (next_sv))
1642	{
1643	/* nothing to schedule: call the idle handler */
1644	dSP;
1645
1646	ENTER;
1647	SAVETMPS;
1648
1649	PUSHMARK (SP);
1650	PUTBACK;
1651	call_sv (get_sv ("Coro::idle", FALSE), G_VOID \| G_DISCARD);
1652
1653	FREETMPS;
1654	LEAVE;
1655	}
1656	else
1657	{	1706	{
1658	struct coro *next = SvSTATE_hv (next_sv);	1707	struct coro *next = SvSTATE_hv (next_sv);
1659		1708
1660	/* cannot transfer to destroyed coros, skip and look for next */	1709	/* cannot transfer to destroyed coros, skip and look for next */
1661	if (expect_false (next->flags & CF_DESTROYED))	1710	if (expect_false (next->flags & CF_DESTROYED))
…		…
1663	else	1712	else
1664	{	1713	{
1665	next->flags &= ~CF_READY;	1714	next->flags &= ~CF_READY;
1666	--coro_nready;	1715	--coro_nready;
1667		1716
1668	return prepare_cede_to (aTHX_ ta, next);	1717	prepare_schedule_to (aTHX_ ta, next);
		1718	break;
1669	}	1719	}
1670	}	1720	}
		1721	else
		1722	{
		1723	/* nothing to schedule: call the idle handler */
		1724	if (SvROK (sv_idle)
		1725	&& SvOBJECT (SvRV (sv_idle)))
		1726	{
		1727	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
		1728	api_ready (aTHX_ SvRV (sv_idle));
		1729	--coro_nready;
		1730	}
		1731	else
		1732	{
		1733	dSP;
		1734
		1735	ENTER;
		1736	SAVETMPS;
		1737
		1738	PUSHMARK (SP);
		1739	PUTBACK;
		1740	call_sv (sv_idle, G_VOID \| G_DISCARD);
		1741
		1742	FREETMPS;
		1743	LEAVE;
		1744	}
		1745	}
1671	}	1746	}
1672	}	1747	}
1673		1748
1674	INLINE void	1749	INLINE void
1675	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1750	prepare_cede (pTHX_ struct coro_transfer_args *ta)
…		…
1697	{	1772	{
1698	struct coro_transfer_args ta;	1773	struct coro_transfer_args ta;
1699		1774
1700	prepare_schedule (aTHX_ &ta);	1775	prepare_schedule (aTHX_ &ta);
1701	TRANSFER (ta, 1);	1776	TRANSFER (ta, 1);
		1777	}
		1778
		1779	static void
		1780	api_schedule_to (pTHX_ SV *coro_sv)
		1781	{
		1782	struct coro_transfer_args ta;
		1783	struct coro *next = SvSTATE (coro_sv);
		1784
		1785	SvREFCNT_inc_NN (coro_sv);
		1786	prepare_schedule_to (aTHX_ &ta, next);
1702	}	1787	}
1703		1788
1704	static int	1789	static int
1705	api_cede (pTHX)	1790	api_cede (pTHX)
1706	{	1791	{
…		…
1735	static void	1820	static void
1736	api_trace (pTHX_ SV *coro_sv, int flags)	1821	api_trace (pTHX_ SV *coro_sv, int flags)
1737	{	1822	{
1738	struct coro *coro = SvSTATE (coro_sv);	1823	struct coro *coro = SvSTATE (coro_sv);
1739		1824
		1825	if (coro->flags & CF_RUNNING)
		1826	croak ("cannot enable tracing on a running coroutine, caught");
		1827
1740	if (flags & CC_TRACE)	1828	if (flags & CC_TRACE)
1741	{	1829	{
1742	if (!coro->cctx)	1830	if (!coro->cctx)
1743	coro->cctx = cctx_new_run ();	1831	coro->cctx = cctx_new_run ();
1744	else if (!(coro->cctx->flags & CC_TRACE))	1832	else if (!(coro->cctx->flags & CC_TRACE))
1745	croak ("cannot enable tracing on coroutine with custom stack,");	1833	croak ("cannot enable tracing on coroutine with custom stack, caught");
1746		1834
1747	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));	1835	coro->cctx->flags \|= CC_NOREUSE \| (flags & (CC_TRACE \| CC_TRACE_ALL));
1748	}	1836	}
1749	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1837	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1750	{	1838	{
…		…
1753	if (coro->flags & CF_RUNNING)	1841	if (coro->flags & CF_RUNNING)
1754	PL_runops = RUNOPS_DEFAULT;	1842	PL_runops = RUNOPS_DEFAULT;
1755	else	1843	else
1756	coro->slot->runops = RUNOPS_DEFAULT;	1844	coro->slot->runops = RUNOPS_DEFAULT;
1757	}	1845	}
		1846	}
		1847
		1848	static void
		1849	coro_call_on_destroy (pTHX_ struct coro *coro)
		1850	{
		1851	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
		1852	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		1853
		1854	if (on_destroyp)
		1855	{
		1856	AV on_destroy = (AV )SvRV (*on_destroyp);
		1857
		1858	while (AvFILLp (on_destroy) >= 0)
		1859	{
		1860	dSP; /* don't disturb outer sp */
		1861	SV *cb = av_pop (on_destroy);
		1862
		1863	PUSHMARK (SP);
		1864
		1865	if (statusp)
		1866	{
		1867	int i;
		1868	AV status = (AV )SvRV (*statusp);
		1869	EXTEND (SP, AvFILLp (status) + 1);
		1870
		1871	for (i = 0; i <= AvFILLp (status); ++i)
		1872	PUSHs (AvARRAY (status)[i]);
		1873	}
		1874
		1875	PUTBACK;
		1876	call_sv (sv_2mortal (cb), G_VOID \| G_DISCARD);
		1877	}
		1878	}
		1879	}
		1880
		1881	static void
		1882	slf_init_terminate (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		1883	{
		1884	int i;
		1885	HV hv = (HV )SvRV (coro_current);
		1886	AV *av = newAV ();
		1887
		1888	av_extend (av, items - 1);
		1889	for (i = 0; i < items; ++i)
		1890	av_push (av, SvREFCNT_inc_NN (arg [i]));
		1891
		1892	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		1893
		1894	av_push (av_destroy, (SV )newRV_inc ((SV )hv)); /* RVinc for perl */
		1895	api_ready (aTHX_ sv_manager);
		1896
		1897	frame->prepare = prepare_schedule;
		1898	frame->check = slf_check_repeat;
		1899
		1900	/* as a minor optimisation, we could unwind all stacks here */
		1901	/* but that puts extra pressure on pp_slf, and is not worth much */
		1902	/coro_unwind_stacks (aTHX);/
1758	}	1903	}
1759		1904
1760	/*****************************************************************************/	1905	/*****************************************************************************/
1761	/* async pool handler */	1906	/* async pool handler */
1762		1907
…		…
1995	static void	2140	static void
1996	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)	2141	slf_init_schedule (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
1997	{	2142	{
1998	frame->prepare = prepare_schedule;	2143	frame->prepare = prepare_schedule;
1999	frame->check = slf_check_nop;	2144	frame->check = slf_check_nop;
		2145	}
		2146
		2147	static void
		2148	slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
		2149	{
		2150	struct coro next = (struct coro )slf_frame.data;
		2151
		2152	SvREFCNT_inc_NN (next->hv);
		2153	prepare_schedule_to (aTHX_ ta, next);
		2154	}
		2155
		2156	static void
		2157	slf_init_schedule_to (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2158	{
		2159	if (!items)
		2160	croak ("Coro::schedule_to expects a coroutine argument, caught");
		2161
		2162	frame->data = (void *)SvSTATE (arg [0]);
		2163	frame->prepare = slf_prepare_schedule_to;
		2164	frame->check = slf_check_nop;
		2165	}
		2166
		2167	static void
		2168	slf_init_cede_to (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
		2169	{
		2170	api_ready (aTHX_ SvRV (coro_current));
		2171
		2172	slf_init_schedule_to (aTHX_ frame, cv, arg, items);
2000	}	2173	}
2001		2174
2002	static void	2175	static void
2003	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)	2176	slf_init_cede (pTHX_ struct CoroSLF frame, CV cv, SV **arg, int items)
2004	{	2177	{
…		…
2150	}	2323	}
2151	else	2324	else
2152	slf_argc = 0;	2325	slf_argc = 0;
2153		2326
2154	PL_op->op_ppaddr = pp_slf;	2327	PL_op->op_ppaddr = pp_slf;
2155	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */	2328	/PL_op->op_type = OP_CUSTOM; / we do behave like entersub still */
2156		2329
2157	PL_op = (OP *)&slf_restore;	2330	PL_op = (OP *)&slf_restore;
		2331	}
		2332
		2333	/*****************************************************************************/
		2334	/* dynamic wind */
		2335
		2336	static void
		2337	on_enterleave_call (pTHX_ SV *cb)
		2338	{
		2339	dSP;
		2340
		2341	PUSHSTACK;
		2342
		2343	PUSHMARK (SP);
		2344	PUTBACK;
		2345	call_sv (cb, G_VOID \| G_DISCARD);
		2346	SPAGAIN;
		2347
		2348	POPSTACK;
		2349	}
		2350
		2351	static SV *
		2352	coro_avp_pop_and_free (AV **avp)
		2353	{
		2354	AV av = avp;
		2355	SV *res = av_pop (av);
		2356
		2357	if (AvFILLp (av) < 0)
		2358	{
		2359	*avp = 0;
		2360	SvREFCNT_dec (av);
		2361	}
		2362
		2363	return res;
		2364	}
		2365
		2366	static void
		2367	coro_pop_on_enter (pTHX_ void *coro)
		2368	{
		2369	SV cb = coro_avp_pop_and_free (&((struct coro )coro)->on_enter);
		2370	SvREFCNT_dec (cb);
		2371	}
		2372
		2373	static void
		2374	coro_pop_on_leave (pTHX_ void *coro)
		2375	{
		2376	SV cb = coro_avp_pop_and_free (&((struct coro )coro)->on_leave);
		2377	on_enterleave_call (sv_2mortal (cb));
2158	}	2378	}
2159		2379
2160	/*****************************************************************************/	2380	/*****************************************************************************/
2161	/* PerlIO::cede */	2381	/* PerlIO::cede */
2162		2382
…		…
2243	SV **ary;	2463	SV **ary;
2244		2464
2245	/* unfortunately, building manually saves memory */	2465	/* unfortunately, building manually saves memory */
2246	Newx (ary, 2, SV *);	2466	Newx (ary, 2, SV *);
2247	AvALLOC (av) = ary;	2467	AvALLOC (av) = ary;
		2468	#if PERL_VERSION_ATLEAST (5,10,0)
2248	/AvARRAY (av) = ary;/	2469	AvARRAY (av) = ary;
		2470	#else
2249	SvPVX ((SV )av) = (char )ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */	2471	/* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
		2472	/* -DDEBUGGING flags this as a bug, despite it perfectly working */
		2473	SvPVX ((SV )av) = (char )ary;
		2474	#endif
2250	AvMAX (av) = 1;	2475	AvMAX (av) = 1;
2251	AvFILLp (av) = 0;	2476	AvFILLp (av) = 0;
2252	ary [0] = newSViv (count);	2477	ary [0] = newSViv (count);
2253		2478
2254	return newRV_noinc ((SV *)av);	2479	return newRV_noinc ((SV *)av);
…		…
2624	XSRETURN_EMPTY;	2849	XSRETURN_EMPTY;
2625	}	2850	}
2626		2851
2627	/*****************************************************************************/	2852	/*****************************************************************************/
2628		2853
		2854	#if CORO_CLONE
		2855	# include "clone.c"
		2856	#endif
		2857
2629	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2858	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2630		2859
2631	PROTOTYPES: DISABLE	2860	PROTOTYPES: DISABLE
2632		2861
2633	BOOT:	2862	BOOT:
…		…
2637	coro_thx = PERL_GET_CONTEXT;	2866	coro_thx = PERL_GET_CONTEXT;
2638	# endif	2867	# endif
2639	#endif	2868	#endif
2640	BOOT_PAGESIZE;	2869	BOOT_PAGESIZE;
2641		2870
		2871	cctx_current = cctx_new_empty ();
		2872
2642	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);	2873	irsgv = gv_fetchpv ("/" , GV_ADD\|GV_NOTQUAL, SVt_PV);
2643	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);	2874	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD\|GV_NOTQUAL, SVt_PVIO);
2644		2875
2645	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;	2876	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2646	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;	2877	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
…		…
2665		2896
2666	{	2897	{
2667	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));	2898	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2668		2899
2669	if (!PL_custom_op_names) PL_custom_op_names = newHV ();	2900	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2670	hv_store_ent (PL_custom_op_names, slf,	2901	hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2671	newSVpv ("coro_slf", 0), 0);
2672		2902
2673	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();	2903	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2674	hv_store_ent (PL_custom_op_descs, slf,	2904	hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2675	newSVpv ("coro schedule like function", 0), 0);
2676	}	2905	}
2677		2906
2678	coroapi.ver = CORO_API_VERSION;	2907	coroapi.ver = CORO_API_VERSION;
2679	coroapi.rev = CORO_API_REVISION;	2908	coroapi.rev = CORO_API_REVISION;
2680		2909
…		…
2773	void	3002	void
2774	_exit (int code)	3003	_exit (int code)
2775	PROTOTYPE: $	3004	PROTOTYPE: $
2776	CODE:	3005	CODE:
2777	_exit (code);	3006	_exit (code);
		3007
		3008	SV *
		3009	clone (Coro::State coro)
		3010	CODE:
		3011	{
		3012	#if CORO_CLONE
		3013	struct coro *ncoro = coro_clone (aTHX_ coro);
		3014	MAGIC *mg;
		3015	/* TODO: too much duplication */
		3016	ncoro->hv = newHV ();
		3017	mg = sv_magicext ((SV )ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char )ncoro, 0);
		3018	mg->mg_flags \|= MGf_DUP;
		3019	RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
		3020	#else
		3021	croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
		3022	#endif
		3023	}
		3024	OUTPUT:
		3025	RETVAL
2778		3026
2779	int	3027	int
2780	cctx_stacksize (int new_stacksize = 0)	3028	cctx_stacksize (int new_stacksize = 0)
2781	PROTOTYPE: ;$	3029	PROTOTYPE: ;$
2782	CODE:	3030	CODE:
…		…
2832	eval = 1	3080	eval = 1
2833	CODE:	3081	CODE:
2834	{	3082	{
2835	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))	3083	if (coro->mainstack && ((coro->flags & CF_RUNNING) \|\| coro->slot))
2836	{	3084	{
2837	struct coro temp;	3085	struct coro *current = SvSTATE_current;
2838		3086
2839	if (!(coro->flags & CF_RUNNING))	3087	if (current != coro)
2840	{	3088	{
2841	PUTBACK;	3089	PUTBACK;
2842	save_perl (aTHX_ &temp);	3090	save_perl (aTHX_ current);
2843	load_perl (aTHX_ coro);	3091	load_perl (aTHX_ coro);
		3092	SPAGAIN;
2844	}	3093	}
2845		3094
2846	{
2847	dSP;
2848	ENTER;
2849	SAVETMPS;
2850	PUTBACK;
2851	PUSHSTACK;	3095	PUSHSTACK;
		3096
2852	PUSHMARK (SP);	3097	PUSHMARK (SP);
		3098	PUTBACK;
2853		3099
2854	if (ix)	3100	if (ix)
2855	eval_sv (coderef, 0);	3101	eval_sv (coderef, 0);
2856	else	3102	else
2857	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);	3103	call_sv (coderef, G_KEEPERR \| G_EVAL \| G_VOID \| G_DISCARD);
2858		3104
		3105	SPAGAIN;
2859	POPSTACK;	3106	POPSTACK;
2860	SPAGAIN;
2861	FREETMPS;
2862	LEAVE;
2863	PUTBACK;
2864	}
2865		3107
2866	if (!(coro->flags & CF_RUNNING))	3108	if (current != coro)
2867	{	3109	{
		3110	PUTBACK;
2868	save_perl (aTHX_ coro);	3111	save_perl (aTHX_ coro);
2869	load_perl (aTHX_ &temp);	3112	load_perl (aTHX_ current);
2870	SPAGAIN;	3113	SPAGAIN;
2871	}	3114	}
2872	}	3115	}
2873	}	3116	}
2874		3117
…		…
2903		3146
2904	SV *	3147	SV *
2905	has_cctx (Coro::State coro)	3148	has_cctx (Coro::State coro)
2906	PROTOTYPE: $	3149	PROTOTYPE: $
2907	CODE:	3150	CODE:
2908	RETVAL = boolSV (!!coro->cctx);	3151	/* maybe manage the running flag differently */
		3152	RETVAL = boolSV (!!coro->cctx \|\| (coro->flags & CF_RUNNING));
2909	OUTPUT:	3153	OUTPUT:
2910	RETVAL	3154	RETVAL
2911		3155
2912	int	3156	int
2913	is_traced (Coro::State coro)	3157	is_traced (Coro::State coro)
…		…
2933		3177
2934	void	3178	void
2935	force_cctx ()	3179	force_cctx ()
2936	PROTOTYPE:	3180	PROTOTYPE:
2937	CODE:	3181	CODE:
2938	SvSTATE_current->cctx->idle_sp = 0;	3182	cctx_current->idle_sp = 0;
2939		3183
2940	void	3184	void
2941	swap_defsv (Coro::State self)	3185	swap_defsv (Coro::State self)
2942	PROTOTYPE: $	3186	PROTOTYPE: $
2943	ALIAS:	3187	ALIAS:
…		…
2958		3202
2959	BOOT:	3203	BOOT:
2960	{	3204	{
2961	int i;	3205	int i;
2962		3206
2963	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2964	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3207	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2965	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3208	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2966	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);	3209	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2967	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);	3210	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2968	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3211	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
		3212	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		3213	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
		3214	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3215	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2969		3216
2970	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3217	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2971	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3218	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2972	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3219	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2973	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3220	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
…		…
2986		3233
2987	{	3234	{
2988	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3235	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2989		3236
2990	coroapi.schedule = api_schedule;	3237	coroapi.schedule = api_schedule;
		3238	coroapi.schedule_to = api_schedule_to;
2991	coroapi.cede = api_cede;	3239	coroapi.cede = api_cede;
2992	coroapi.cede_notself = api_cede_notself;	3240	coroapi.cede_notself = api_cede_notself;
2993	coroapi.ready = api_ready;	3241	coroapi.ready = api_ready;
2994	coroapi.is_ready = api_is_ready;	3242	coroapi.is_ready = api_is_ready;
2995	coroapi.nready = coro_nready;	3243	coroapi.nready = coro_nready;
…		…
3000	SvREADONLY_on (sv);	3248	SvREADONLY_on (sv);
3001	}	3249	}
3002	}	3250	}
3003		3251
3004	void	3252	void
		3253	terminate (...)
		3254	CODE:
		3255	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3256
		3257	void
3005	schedule (...)	3258	schedule (...)
3006	CODE:	3259	CODE:
3007	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3260	CORO_EXECUTE_SLF_XS (slf_init_schedule);
		3261
		3262	void
		3263	schedule_to (...)
		3264	CODE:
		3265	CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
		3266
		3267	void
		3268	cede_to (...)
		3269	CODE:
		3270	CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3008		3271
3009	void	3272	void
3010	cede (...)	3273	cede (...)
3011	CODE:	3274	CODE:
3012	CORO_EXECUTE_SLF_XS (slf_init_cede);	3275	CORO_EXECUTE_SLF_XS (slf_init_cede);
3013		3276
3014	void	3277	void
3015	cede_notself (...)	3278	cede_notself (...)
3016	CODE:	3279	CODE:
3017	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);	3280	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
		3281
		3282	void
		3283	_cancel (Coro::State self)
		3284	CODE:
		3285	coro_state_destroy (aTHX_ self);
		3286	coro_call_on_destroy (aTHX_ self);
3018		3287
3019	void	3288	void
3020	_set_current (SV *current)	3289	_set_current (SV *current)
3021	PROTOTYPE: $	3290	PROTOTYPE: $
3022	CODE:	3291	CODE:
…		…
3130	rouse_wait (...)	3399	rouse_wait (...)
3131	PROTOTYPE: ;$	3400	PROTOTYPE: ;$
3132	PPCODE:	3401	PPCODE:
3133	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);	3402	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3134		3403
		3404	void
		3405	on_enter (SV *block)
		3406	ALIAS:
		3407	on_leave = 1
		3408	PROTOTYPE: &
		3409	CODE:
		3410	{
		3411	struct coro *coro = SvSTATE_current;
		3412	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
		3413
		3414	block = (SV *)coro_sv_2cv (block);
		3415
		3416	if (!*avp)
		3417	*avp = newAV ();
		3418
		3419	av_push (*avp, SvREFCNT_inc (block));
		3420
		3421	if (!ix)
		3422	on_enterleave_call (aTHX_ block);
		3423
		3424	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
		3425	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
		3426	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */
		3427	}
		3428
3135		3429
3136	MODULE = Coro::State PACKAGE = PerlIO::cede	3430	MODULE = Coro::State PACKAGE = PerlIO::cede
3137		3431
3138	BOOT:	3432	BOOT:
3139	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3433	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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Comparing Coro/Coro/State.xs (file contents): Revision 1.316 by root, Thu Nov 20 06:01:40 2008 UTC vs. Revision 1.339 by root, Mon Dec 15 00:28:30 2008 UTC

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Comparing Coro/Coro/State.xs (file contents):
Revision 1.316 by root, Thu Nov 20 06:01:40 2008 UTC vs.
Revision 1.339 by root, Mon Dec 15 00:28:30 2008 UTC