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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC vs.
Revision 1.190 by root, Fri Oct 5 20:39:39 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
…		…
73	/* 5.8.7 */	75	/* 5.8.7 */
74	#ifndef SvRV_set	76	#ifndef SvRV_set
75	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
76	#endif	78	#endif
77		79
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84
78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	85	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
79	# undef CORO_STACKGUARD	86	# undef CORO_STACKGUARD
80	#endif	87	#endif
81		88
82	#ifndef CORO_STACKGUARD	89	#ifndef CORO_STACKGUARD
…		…
86	/* prefer perl internal functions over our own? */	93	/* prefer perl internal functions over our own? */
87	#ifndef CORO_PREFER_PERL_FUNCTIONS	94	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define CORO_PREFER_PERL_FUNCTIONS 0	95	# define CORO_PREFER_PERL_FUNCTIONS 0
89	#endif	96	#endif
90		97
91	/* The next macro should declare a variable stacklevel that contains and approximation	98	/* The next macros try to return the current stack pointer, in an as
92	* to the current C stack pointer. Its property is that it changes with each call	99	* portable way as possible. */
93	* and should be unique. */
94	#define dSTACKLEVEL int stacklevel	100	#define dSTACKLEVEL volatile char stacklevel
95	#define STACKLEVEL ((void *)&stacklevel)	101	#define STACKLEVEL ((void *)&stacklevel)
96		102
97	#define IN_DESTRUCT (PL_main_cv == Nullcv)	103	#define IN_DESTRUCT (PL_main_cv == Nullcv)
98		104
99	#if __GNUC__ >= 3	105	#if __GNUC__ >= 3
…		…
124	I32 laststype;	130	I32 laststype;
125	int laststatval;	131	int laststatval;
126	Stat_t statcache;	132	Stat_t statcache;
127	};	133	};
128		134
		135	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	136	static struct CoroAPI coroapi;
130	static AV *main_mainstack; /* used to differentiate between $main and others */	137	static AV *main_mainstack; /* used to differentiate between $main and others */
		138	static JMPENV *main_top_env;
131	static HV *coro_state_stash, *coro_stash;	139	static HV *coro_state_stash, *coro_stash;
132	static SV *coro_mortal; /* will be freed after next transfer */	140	static SV *coro_mortal; /* will be freed after next transfer */
133		141
		142	static GV *irsgv; /* $/ */
		143	static GV *stdoutgv; /* *STDOUT */
		144
		145	/* async_pool helper stuff */
		146	static SV *sv_pool_rss;
		147	static SV *sv_pool_size;
		148	static AV *av_async_pool;
		149
134	static struct coro_cctx *cctx_first;	150	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	151	static int cctx_count, cctx_idle;
		152
		153	enum {
		154	CC_MAPPED = 0x01,
		155	CC_NOREUSE = 0x02, /* throw this away after tracing */
		156	CC_TRACE = 0x04,
		157	CC_TRACE_SUB = 0x08, /* trace sub calls */
		158	CC_TRACE_LINE = 0x10, /* trace each statement */
		159	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		160	};
136		161
137	/* this is a structure representing a c-level coroutine */	162	/* this is a structure representing a c-level coroutine */
138	typedef struct coro_cctx {	163	typedef struct coro_cctx {
139	struct coro_cctx *next;	164	struct coro_cctx *next;
140		165
141	/* the stack */	166	/* the stack */
142	void *sptr;	167	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	168	size_t ssize;
144		169
145	/* cpu state */	170	/* cpu state */
146	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	171	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
147	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	172	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	173	JMPENV *top_env;
149	coro_context cctx;	174	coro_context cctx;
150		175
151	int inuse;
152
153	#if CORO_USE_VALGRIND	176	#if CORO_USE_VALGRIND
154	int valgrind_id;	177	int valgrind_id;
155	#endif	178	#endif
		179	unsigned char flags;
156	} coro_cctx;	180	} coro_cctx;
157		181
158	enum {	182	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	183	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	184	CF_READY = 0x0002, /* coroutine is ready */
…		…
168	coro_cctx *cctx;	192	coro_cctx *cctx;
169		193
170	/* data associated with this coroutine (initial args) */	194	/* data associated with this coroutine (initial args) */
171	AV *args;	195	AV *args;
172	int refcnt;	196	int refcnt;
173	int save; /* CORO_SAVE flags */
174	int flags; /* CF_ flags */	197	int flags; /* CF_ flags */
175		198
176	/* optionally saved, might be zero */	199	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	200	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	201	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	202	SV *errsv; /* $@ */
		203	SV *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	204	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	205	SV *irssv_sv; /* real $/ cache */
182		206
183	#define VAR(name,type) type name;	207	#define VAR(name,type) type name;
184	# include "state.h"	208	# include "state.h"
185	#undef VAR	209	#undef VAR
186		210
		211	/* statistics */
		212	int usecount; /* number of transfers to this coro */
		213
187	/* coro process data */	214	/* coro process data */
188	int prio;	215	int prio;
		216	//SV *throw;
		217
		218	/* async_pool */
		219	SV *saved_deffh;
		220
		221	/* linked list */
		222	struct coro *next, *prev;
		223	HV *hv; /* the perl hash associated with this coro, if any */
189	};	224	};
190		225
191	typedef struct coro *Coro__State;	226	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	227	typedef struct coro *Coro__State_or_hashref;
193		228
…		…
202		237
203	/* for Coro.pm */	238	/* for Coro.pm */
204	static SV *coro_current;	239	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	240	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	241	static int coro_nready;
		242	static struct coro *coro_first;
207		243
208	/** lowlevel stuff **********************************************************/	244	/** lowlevel stuff **********************************************************/
209		245
210	static AV *	246	static AV *
211	coro_clone_padlist (CV *cv)	247	coro_clone_padlist (pTHX_ CV *cv)
212	{	248	{
213	AV *padlist = CvPADLIST (cv);	249	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	250	AV *newpadlist, *newpad;
215		251
216	newpadlist = newAV ();	252	newpadlist = newAV ();
…		…
228		264
229	return newpadlist;	265	return newpadlist;
230	}	266	}
231		267
232	static void	268	static void
233	free_padlist (AV *padlist)	269	free_padlist (pTHX_ AV *padlist)
234	{	270	{
235	/* may be during global destruction */	271	/* may be during global destruction */
236	if (SvREFCNT (padlist))	272	if (SvREFCNT (padlist))
237	{	273	{
238	I32 i = AvFILLp (padlist);	274	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	295	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	296	AV *av = (AV *)mg->mg_obj;
261		297
262	/* casting is fun. */	298	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	299	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	300	free_padlist (aTHX_ padlist);
265		301
266	SvREFCNT_dec (av);	302	SvREFCNT_dec (av);
267		303
268	return 0;	304	return 0;
269	}	305	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	313	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	314	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	315	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	316	: 0
281		317
		318	static struct coro *
		319	SvSTATE_ (pTHX_ SV *coro)
		320	{
		321	HV *stash;
		322	MAGIC *mg;
		323
		324	if (SvROK (coro))
		325	coro = SvRV (coro);
		326
		327	if (SvTYPE (coro) != SVt_PVHV)
		328	croak ("Coro::State object required");
		329
		330	stash = SvSTASH (coro);
		331	if (stash != coro_stash && stash != coro_state_stash)
		332	{
		333	/* very slow, but rare, check */
		334	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		335	croak ("Coro::State object required");
		336	}
		337
		338	mg = CORO_MAGIC (coro);
		339	return (struct coro *)mg->mg_ptr;
		340	}
		341
		342	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		343
282	/* the next two functions merely cache the padlists */	344	/* the next two functions merely cache the padlists */
283	static void	345	static void
284	get_padlist (CV *cv)	346	get_padlist (pTHX_ CV *cv)
285	{	347	{
286	MAGIC *mg = CORO_MAGIC (cv);	348	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	349	AV *av;
288		350
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	351	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
…		…
295	CV *cp = Perl_cv_clone (cv);	357	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	358	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	359	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	360	SvREFCNT_dec (cp);
299	#else	361	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	362	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	363	#endif
302	}	364	}
303	}	365	}
304		366
305	static void	367	static void
306	put_padlist (CV *cv)	368	put_padlist (pTHX_ CV *cv)
307	{	369	{
308	MAGIC *mg = CORO_MAGIC (cv);	370	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	371	AV *av;
310		372
311	if (!mg)	373	if (!mg)
…		…
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	386	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	387	}
326		388
327	/** load & save, init *******************************************************/	389	/** load & save, init *******************************************************/
328		390
329	#define SB do {
330	#define SE } while (0)
331
332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333
334	static void	391	static void
335	load_perl (Coro__State c)	392	load_perl (pTHX_ Coro__State c)
336	{	393	{
337	#define VAR(name,type) PL_ ## name = c->name;	394	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	395	# include "state.h"
339	#undef VAR	396	#undef VAR
340		397
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	398	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	399	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	400	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	401	GvSV (irsgv) = c->irssv_sv;
345	{
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347	SvREFCNT_dec (c->irssv);
348	else
349	{
350	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);
353	}
354	}
355		402
356	{	403	{
357	dSP;	404	dSP;
358	CV *cv;	405	CV *cv;
359		406
360	/* now do the ugly restore mess */	407	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	408	while ((cv = (CV *)POPs))
362	{	409	{
363	put_padlist (cv); /* mark this padlist as available */	410	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	411	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	412	CvPADLIST (cv) = (AV *)POPs;
366	}	413	}
367		414
368	PUTBACK;	415	PUTBACK;
369	}	416	}
370	assert (!PL_comppad || AvARRAY (PL_comppad));//D
371	}	417	}
372		418
373	static void	419	static void
374	save_perl (Coro__State c)	420	save_perl (pTHX_ Coro__State c)
375	{	421	{
376	assert (!PL_comppad || AvARRAY (PL_comppad));//D
377	{	422	{
378	dSP;	423	dSP;
379	I32 cxix = cxstack_ix;	424	I32 cxix = cxstack_ix;
380	PERL_CONTEXT *ccstk = cxstack;	425	PERL_CONTEXT *ccstk = cxstack;
381	PERL_SI *top_si = PL_curstackinfo;	426	PERL_SI *top_si = PL_curstackinfo;
…		…
383	/*	428	/*
384	* the worst thing you can imagine happens first - we have to save	429	* the worst thing you can imagine happens first - we have to save
385	* (and reinitialize) all cv's in the whole callchain :(	430	* (and reinitialize) all cv's in the whole callchain :(
386	*/	431	*/
387		432
388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	433	XPUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	434	/* this loop was inspired by pp_caller */
391	for (;;)	435	for (;;)
392	{	436	{
393	while (cxix >= 0)	437	while (cxix >= 0)
394	{	438	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	439	PERL_CONTEXT *cx = &ccstk[cxix--];
396		440
397	if (CxTYPE (cx) == CXt_SUB)	441	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
398	{	442	{
399	CV *cv = cx->blk_sub.cv;	443	CV *cv = cx->blk_sub.cv;
400		444
401	if (CvDEPTH (cv))	445	if (CvDEPTH (cv))
402	{	446	{
…		…
404	PUSHs ((SV *)CvPADLIST (cv));	448	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	449	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	450	PUSHs ((SV *)cv);
407		451
408	CvDEPTH (cv) = 0;	452	CvDEPTH (cv) = 0;
409	get_padlist (cv);	453	get_padlist (aTHX_ cv);
410	}	454	}
411	}	455	}
412	}	456	}
413		457
414	if (top_si->si_type == PERLSI_MAIN)	458	if (top_si->si_type == PERLSI_MAIN)
415	break;	459	break;
416		460
417	top_si = top_si->si_prev;	461	top_si = top_si->si_prev;
418	ccstk = top_si->si_cxstack;	462	ccstk = top_si->si_cxstack;
419	cxix = top_si->si_cxix;	463	cxix = top_si->si_cxix;
420	}	464	}
421		465
422	PUTBACK;	466	PUTBACK;
423	}	467	}
424		468
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	469	c->defav = GvAV (PL_defgv);
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	470	c->defsv = DEFSV;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	471	c->errsv = ERRSV;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	472	c->irssv_sv = GvSV (irsgv);
429		473
430	#define VAR(name,type)c->name = PL_ ## name;	474	#define VAR(name,type)c->name = PL_ ## name;
431	# include "state.h"	475	# include "state.h"
432	#undef VAR	476	#undef VAR
433	}	477	}
…		…
440	*/	484	*/
441	#if CORO_PREFER_PERL_FUNCTIONS	485	#if CORO_PREFER_PERL_FUNCTIONS
442	# define coro_init_stacks init_stacks	486	# define coro_init_stacks init_stacks
443	#else	487	#else
444	static void	488	static void
445	coro_init_stacks ()	489	coro_init_stacks (pTHX)
446	{	490	{
447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	491	PL_curstackinfo = new_stackinfo(64, 6);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	492	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	493	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	494	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		495
452	PL_stack_base = AvARRAY(PL_curstack);	496	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	497	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	498	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		499
456	New(50,PL_tmps_stack,128,SV*);	500	New(50,PL_tmps_stack,64,SV*);
457	PL_tmps_floor = -1;	501	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	502	PL_tmps_ix = -1;
459	PL_tmps_max = 128;	503	PL_tmps_max = 64;
460		504
461	New(54,PL_markstack,32,I32);	505	New(54,PL_markstack,16,I32);
462	PL_markstack_ptr = PL_markstack;	506	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 32;	507	PL_markstack_max = PL_markstack + 16;
464		508
465	#ifdef SET_MARK_OFFSET	509	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	510	SET_MARK_OFFSET;
467	#endif	511	#endif
468		512
469	New(54,PL_scopestack,32,I32);	513	New(54,PL_scopestack,16,I32);
470	PL_scopestack_ix = 0;	514	PL_scopestack_ix = 0;
471	PL_scopestack_max = 32;	515	PL_scopestack_max = 16;
472		516
473	New(54,PL_savestack,64,ANY);	517	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	518	PL_savestack_ix = 0;
475	PL_savestack_max = 64;	519	PL_savestack_max = 64;
476		520
477	#if !PERL_VERSION_ATLEAST (5,9,0)	521	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,16,OP*);	522	New(54,PL_retstack,4,OP*);
479	PL_retstack_ix = 0;	523	PL_retstack_ix = 0;
480	PL_retstack_max = 16;	524	PL_retstack_max = 4;
481	#endif	525	#endif
482	}	526	}
483	#endif	527	#endif
484		528
485	/*	529	/*
486	* destroy the stacks, the callchain etc...	530	* destroy the stacks, the callchain etc...
487	*/	531	*/
488	static void	532	static void
489	coro_destroy_stacks ()	533	coro_destroy_stacks (pTHX)
490	{	534	{
491	if (!IN_DESTRUCT)
492	{
493	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);
495	assert (PL_tmps_floor == -1);
496
497	/* free all temporaries */
498	FREETMPS;
499	assert (PL_tmps_ix == -1);
500
501	/* unwind all extra stacks */
502	POPSTACK_TO (PL_mainstack);
503
504	/* unwind main stack */
505	dounwind (-1);
506	}
507
508	while (PL_curstackinfo->si_next)	535	while (PL_curstackinfo->si_next)
509	PL_curstackinfo = PL_curstackinfo->si_next;	536	PL_curstackinfo = PL_curstackinfo->si_next;
510		537
511	while (PL_curstackinfo)	538	while (PL_curstackinfo)
512	{	539	{
…		…
527	#if !PERL_VERSION_ATLEAST (5,9,0)	554	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	555	Safefree (PL_retstack);
529	#endif	556	#endif
530	}	557	}
531		558
		559	static size_t
		560	coro_rss (pTHX_ struct coro *coro)
		561	{
		562	size_t rss = sizeof (*coro);
		563
		564	if (coro->mainstack)
		565	{
		566	if (coro->flags & CF_RUNNING)
		567	{
		568	#define VAR(name,type)coro->name = PL_ ## name;
		569	# include "state.h"
		570	#undef VAR
		571	}
		572
		573	rss += sizeof (coro->curstackinfo);
		574	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		575	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		576	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		577	rss += coro->tmps_max * sizeof (SV *);
		578	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		579	rss += coro->scopestack_max * sizeof (I32);
		580	rss += coro->savestack_max * sizeof (ANY);
		581
		582	#if !PERL_VERSION_ATLEAST (5,9,0)
		583	rss += coro->retstack_max * sizeof (OP *);
		584	#endif
		585	}
		586
		587	return rss;
		588	}
		589
532	/** coroutine stack handling ************************************************/	590	/** coroutine stack handling ************************************************/
533		591
534	static void	592	static void
535	setup_coro (struct coro *coro)	593	coro_setup (pTHX_ struct coro *coro)
536	{	594	{
537	/*	595	/*
538	* emulate part of the perl startup here.	596	* emulate part of the perl startup here.
539	*/	597	*/
540
541	coro_init_stacks ();	598	coro_init_stacks (aTHX);
542		599
		600	PL_runops = RUNOPS_DEFAULT;
543	PL_curcop = &PL_compiling;	601	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	602	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	603	PL_comppad = 0;
546	PL_curpm = 0;	604	PL_curpm = 0;
547	PL_localizing = 0;	605	PL_localizing = 0;
548	PL_dirty = 0;	606	PL_dirty = 0;
549	PL_restartop = 0;	607	PL_restartop = 0;
		608
		609	GvSV (PL_defgv) = NEWSV (0, 0);
		610	GvAV (PL_defgv) = coro->args; coro->args = 0;
		611	GvSV (PL_errgv) = NEWSV (0, 0);
		612	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		613	PL_rs = newSVsv (GvSV (irsgv));
		614	PL_defoutgv = SvREFCNT_inc (stdoutgv);
550		615
551	{	616	{
552	dSP;	617	dSP;
553	LOGOP myop;	618	LOGOP myop;
554		619
555	SvREFCNT_dec (GvAV (PL_defgv));
556	GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558	Zero (&myop, 1, LOGOP);	620	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	621	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	622	myop.op_flags = OPf_WANT_VOID;
561		623
562	PUSHMARK (SP);	624	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	625	XPUSHs (av_shift (GvAV (PL_defgv)));
564	PUTBACK;	626	PUTBACK;
565	PL_op = (OP *)&myop;	627	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	628	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	629	SPAGAIN;
568	}	630	}
569		631
570	ENTER; /* necessary e.g. for dounwind */	632	ENTER; /* necessary e.g. for dounwind */
571	}	633	}
572		634
573	static void	635	static void
		636	coro_destroy (pTHX_ struct coro *coro)
		637	{
		638	if (!IN_DESTRUCT)
		639	{
		640	/* restore all saved variables and stuff */
		641	LEAVE_SCOPE (0);
		642	assert (PL_tmps_floor == -1);
		643
		644	/* free all temporaries */
		645	FREETMPS;
		646	assert (PL_tmps_ix == -1);
		647
		648	/* unwind all extra stacks */
		649	POPSTACK_TO (PL_mainstack);
		650
		651	/* unwind main stack */
		652	dounwind (-1);
		653	}
		654
		655	SvREFCNT_dec (GvSV (PL_defgv));
		656	SvREFCNT_dec (GvAV (PL_defgv));
		657	SvREFCNT_dec (GvSV (PL_errgv));
		658	SvREFCNT_dec (PL_defoutgv);
		659	SvREFCNT_dec (PL_rs);
		660	SvREFCNT_dec (GvSV (irsgv));
		661
		662	SvREFCNT_dec (coro->saved_deffh);
		663	//SvREFCNT_dec (coro->throw);
		664
		665	coro_destroy_stacks (aTHX);
		666	}
		667
		668	static void
574	free_coro_mortal ()	669	free_coro_mortal (pTHX)
575	{	670	{
576	if (coro_mortal)	671	if (coro_mortal)
577	{	672	{
578	SvREFCNT_dec (coro_mortal);	673	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	674	coro_mortal = 0;
580	}	675	}
581	}	676	}
582		677
		678	static int
		679	runops_trace (pTHX)
		680	{
		681	COP *oldcop = 0;
		682	int oldcxix = -2;
		683	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		684	coro_cctx *cctx = coro->cctx;
		685
		686	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		687	{
		688	PERL_ASYNC_CHECK ();
		689
		690	if (cctx->flags & CC_TRACE_ALL)
		691	{
		692	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		693	{
		694	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		695	SV **bot, **top;
		696	AV *av = newAV (); /* return values */
		697	SV **cb;
		698	dSP;
		699
		700	GV *gv = CvGV (cx->blk_sub.cv);
		701	SV *fullname = sv_2mortal (newSV (0));
		702	if (isGV (gv))
		703	gv_efullname3 (fullname, gv, 0);
		704
		705	bot = PL_stack_base + cx->blk_oldsp + 1;
		706	top = cx->blk_gimme == G_ARRAY ? SP + 1
		707	: cx->blk_gimme == G_SCALAR ? bot + 1
		708	: bot;
		709
		710	while (bot < top)
		711	av_push (av, SvREFCNT_inc (*bot++));
		712
		713	PL_runops = RUNOPS_DEFAULT;
		714	ENTER;
		715	SAVETMPS;
		716	EXTEND (SP, 3);
		717	PUSHMARK (SP);
		718	PUSHs (&PL_sv_no);
		719	PUSHs (fullname);
		720	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		721	PUTBACK;
		722	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		723	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		724	SPAGAIN;
		725	FREETMPS;
		726	LEAVE;
		727	PL_runops = runops_trace;
		728	}
		729
		730	if (oldcop != PL_curcop)
		731	{
		732	oldcop = PL_curcop;
		733
		734	if (PL_curcop != &PL_compiling)
		735	{
		736	SV **cb;
		737
		738	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		739	{
		740	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		741
		742	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		743	{
		744	runops_proc_t old_runops = PL_runops;
		745	dSP;
		746	GV *gv = CvGV (cx->blk_sub.cv);
		747	SV *fullname = sv_2mortal (newSV (0));
		748
		749	if (isGV (gv))
		750	gv_efullname3 (fullname, gv, 0);
		751
		752	PL_runops = RUNOPS_DEFAULT;
		753	ENTER;
		754	SAVETMPS;
		755	EXTEND (SP, 3);
		756	PUSHMARK (SP);
		757	PUSHs (&PL_sv_yes);
		758	PUSHs (fullname);
		759	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		760	PUTBACK;
		761	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		762	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		763	SPAGAIN;
		764	FREETMPS;
		765	LEAVE;
		766	PL_runops = runops_trace;
		767	}
		768
		769	oldcxix = cxstack_ix;
		770	}
		771
		772	if (cctx->flags & CC_TRACE_LINE)
		773	{
		774	dSP;
		775
		776	PL_runops = RUNOPS_DEFAULT;
		777	ENTER;
		778	SAVETMPS;
		779	EXTEND (SP, 3);
		780	PL_runops = RUNOPS_DEFAULT;
		781	PUSHMARK (SP);
		782	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		783	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		784	PUTBACK;
		785	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		786	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		787	SPAGAIN;
		788	FREETMPS;
		789	LEAVE;
		790	PL_runops = runops_trace;
		791	}
		792	}
		793	}
		794	}
		795	}
		796
		797	TAINT_NOT;
		798	return 0;
		799	}
		800
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	801	/* inject a fake call to Coro::State::_cctx_init into the execution */
		802	/* _cctx_init should be careful, as it could be called at almost any time */
		803	/* during execution of a perl program */
584	static void NOINLINE	804	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	805	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	806	{
587	dSP;	807	dSP;
588	LOGOP myop;	808	LOGOP myop;
		809
		810	PL_top_env = &PL_start_env;
		811
		812	if (cctx->flags & CC_TRACE)
		813	PL_runops = runops_trace;
589		814
590	Zero (&myop, 1, LOGOP);	815	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	816	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	817	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		818
…		…
599	PL_op = (OP *)&myop;	824	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	825	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	826	SPAGAIN;
602	}	827	}
603		828
		829	/*
		830	* this is a _very_ stripped down perl interpreter ;)
		831	*/
604	static void	832	static void
605	coro_run (void *arg)	833	coro_run (void *arg)
606	{	834	{
		835	dTHX;
		836
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	837	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	838	UNLOCK;
609		839
610	/*	840	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	841	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		842
615	/* inject call to cctx_init */	843	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	844	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		845
618	/* somebody will hit me for both perl_run and PL_restartop */	846	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	847	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	848	perl_run (PL_curinterp);
621		849
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	850	/*
623	abort ();	851	* If perl-run returns we assume exit() was being called or the coro
		852	* fell off the end, which seems to be the only valid (non-bug)
		853	* reason for perl_run to return. We try to exit by jumping to the
		854	* bootstrap-time "top" top_env, as we cannot restore the "main"
		855	* coroutine as Coro has no such concept
		856	*/
		857	PL_top_env = main_top_env;
		858	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	859	}
625		860
626	static coro_cctx *	861	static coro_cctx *
627	cctx_new ()	862	cctx_new ()
628	{	863	{
629	coro_cctx *cctx;	864	coro_cctx *cctx;
		865	void *stack_start;
		866	size_t stack_size;
630		867
631	++cctx_count;	868	++cctx_count;
632		869
633	Newz (0, cctx, 1, coro_cctx);	870	Newz (0, cctx, 1, coro_cctx);
634		871
635	#if HAVE_MMAP	872	#if HAVE_MMAP
636		873
637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	874	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	875	/* mmap supposedly does allocate-on-write for us */
639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	876	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640		877
641	if (cctx->sptr != (void *)-1)	878	if (cctx->sptr != (void *)-1)
642	{	879	{
643	# if CORO_STACKGUARD	880	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	881	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	882	# endif
646	REGISTER_STACK (
647	cctx,
648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,	883	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	884	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	885	cctx->flags |= CC_MAPPED;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	886	}
654	else	887	else
655	#endif	888	#endif
656	{	889	{
657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);	890	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, CORO_STACKSIZE, long);	891	New (0, cctx->sptr, coro_stacksize, long);
659		892
660	if (!cctx->sptr)	893	if (!cctx->sptr)
661	{	894	{
662	perror ("FATAL: unable to allocate stack for coroutine");	895	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	896	_exit (EXIT_FAILURE);
664	}	897	}
665		898
666	REGISTER_STACK (	899	stack_start = cctx->sptr;
667	cctx,	900	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	901	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		902
		903	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	904	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		905
675	return cctx;	906	return cctx;
676	}	907	}
677		908
678	static void	909	static void
…		…
686	#if CORO_USE_VALGRIND	917	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	918	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	919	#endif
689		920
690	#if HAVE_MMAP	921	#if HAVE_MMAP
691	if (cctx->ssize > 0)	922	if (cctx->flags & CC_MAPPED)
692	munmap (cctx->sptr, cctx->ssize);	923	munmap (cctx->sptr, cctx->ssize);
693	else	924	else
694	#endif	925	#endif
695	Safefree (cctx->sptr);	926	Safefree (cctx->sptr);
696		927
697	Safefree (cctx);	928	Safefree (cctx);
698	}	929	}
699		930
700	static coro_cctx *	931	static coro_cctx *
701	cctx_get ()	932	cctx_get (pTHX)
702	{	933	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	934	while (cctx_first)
706	{	935	{
707	cctx = cctx_first;	936	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	937	cctx_first = cctx->next;
709	--cctx_idle;	938	--cctx_idle;
710	}	939
711	else	940	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
712	{	941	return cctx;
713	cctx = cctx_new ();	942
714	PL_op = PL_op->op_next;	943	cctx_destroy (cctx);
715	}	944	}
716		945
717	return cctx;	946	return cctx_new ();
718	}	947	}
719		948
720	static void	949	static void
721	cctx_put (coro_cctx *cctx)	950	cctx_put (coro_cctx *cctx)
722	{	951	{
…		…
725	{	954	{
726	coro_cctx *first = cctx_first;	955	coro_cctx *first = cctx_first;
727	cctx_first = first->next;	956	cctx_first = first->next;
728	--cctx_idle;	957	--cctx_idle;
729		958
730	assert (!first->inuse);
731	cctx_destroy (first);	959	cctx_destroy (first);
732	}	960	}
733		961
734	++cctx_idle;	962	++cctx_idle;
735	cctx->next = cctx_first;	963	cctx->next = cctx_first;
736	cctx_first = cctx;	964	cctx_first = cctx;
737	}	965	}
738		966
739	/** coroutine switching *****************************************************/	967	/** coroutine switching *****************************************************/
740		968
741	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	969	static void NOINLINE
		970	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		971	{
		972	if (prev != next)
		973	{
		974	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		975	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		976
		977	if (next->flags & CF_RUNNING)
		978	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		979
		980	if (next->flags & CF_DESTROYED)
		981	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		982
		983	if (PL_lex_state != LEX_NOTPARSING)
		984	croak ("Coro::State::transfer called while parsing, but this is not supported");
		985	}
		986	}
		987
		988	/* always use the TRANSFER macro */
		989	static void NOINLINE
743	transfer (struct coro *prev, struct coro *next)	990	transfer (pTHX_ struct coro *prev, struct coro *next)
744	{	991	{
745	dSTACKLEVEL;	992	dSTACKLEVEL;
746		993
747	/* sometimes transfer is only called to set idle_sp */	994	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	995	if (!next)
…		…
756		1003
757	if (prev->flags & CF_NEW)	1004	if (prev->flags & CF_NEW)
758	{	1005	{
759	/* create a new empty context */	1006	/* create a new empty context */
760	Newz (0, prev->cctx, 1, coro_cctx);	1007	Newz (0, prev->cctx, 1, coro_cctx);
761	prev->cctx->inuse = 1;
762	prev->flags &= ~CF_NEW;	1008	prev->flags &= ~CF_NEW;
763	prev->flags |= CF_RUNNING;	1009	prev->flags |= CF_RUNNING;
764	}	1010	}
765
766	/*TODO: must not croak here */
767	if (!prev->flags & CF_RUNNING)
768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
769
770	if (next->flags & CF_RUNNING)
771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
772
773	if (next->flags & CF_DESTROYED)
774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
775		1011
776	prev->flags &= ~CF_RUNNING;	1012	prev->flags &= ~CF_RUNNING;
777	next->flags |= CF_RUNNING;	1013	next->flags |= CF_RUNNING;
778		1014
779	LOCK;	1015	LOCK;
…		…
781	if (next->flags & CF_NEW)	1017	if (next->flags & CF_NEW)
782	{	1018	{
783	/* need to start coroutine */	1019	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	1020	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	1021	/* first get rid of the old state */
786	save_perl (prev);	1022	save_perl (aTHX_ prev);
787	/* setup coroutine call */	1023	/* setup coroutine call */
788	setup_coro (next);	1024	coro_setup (aTHX_ next);
789	/* need a new stack */
790	assert (!next->cctx);
791	}	1025	}
792	else	1026	else
793	{	1027	{
794	/* coroutine already started */	1028	/* coroutine already started */
795	save_perl (prev);	1029	save_perl (aTHX_ prev);
796	load_perl (next);	1030	load_perl (aTHX_ next);
797	}	1031	}
798		1032
799	prev__cctx = prev->cctx;	1033	prev__cctx = prev->cctx;
800		1034
801	/* possibly "free" the cctx */	1035	/* possibly "free" the cctx */
802	if (prev__cctx->idle_sp == STACKLEVEL)	1036	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
803	{	1037	{
804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1038	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1039	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806		1040
807	prev->cctx = 0;	1041	prev->cctx = 0;
808		1042
809	cctx_put (prev__cctx);	1043	cctx_put (prev__cctx);
810	prev__cctx->inuse = 0;
811	}	1044	}
812		1045
		1046	++next->usecount;
		1047
813	if (!next->cctx)	1048	if (!next->cctx)
814	{
815	next->cctx = cctx_get ();	1049	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;
818	}
819		1050
820	if (prev__cctx != next->cctx)	1051	if (prev__cctx != next->cctx)
821	{	1052	{
822	prev__cctx->top_env = PL_top_env;	1053	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	1054	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1055	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	1056	}
826		1057
827	free_coro_mortal ();	1058	free_coro_mortal (aTHX);
828	UNLOCK;	1059	UNLOCK;
829	}	1060	}
830	}	1061	}
831		1062
832	struct transfer_args	1063	struct transfer_args
833	{	1064	{
834	struct coro *prev, *next;	1065	struct coro *prev, *next;
835	};	1066	};
836		1067
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1068	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1069	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838		1070
839	/** high level stuff ********************************************************/	1071	/** high level stuff ********************************************************/
840		1072
841	static int	1073	static int
842	coro_state_destroy (struct coro *coro)	1074	coro_state_destroy (pTHX_ struct coro *coro)
843	{	1075	{
844	if (coro->flags & CF_DESTROYED)	1076	if (coro->flags & CF_DESTROYED)
845	return 0;	1077	return 0;
846		1078
847	coro->flags |= CF_DESTROYED;	1079	coro->flags |= CF_DESTROYED;
…		…
859		1091
860	if (coro->mainstack && coro->mainstack != main_mainstack)	1092	if (coro->mainstack && coro->mainstack != main_mainstack)
861	{	1093	{
862	struct coro temp;	1094	struct coro temp;
863		1095
864	assert (!(coro->flags & CF_RUNNING));
865
866	Zero (&temp, 1, struct coro);
867	temp.save = CORO_SAVE_ALL;
868
869	if (coro->flags & CF_RUNNING)	1096	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	1097	croak ("FATAL: tried to destroy currently running coroutine");
871		1098
872	save_perl (&temp);	1099	save_perl (aTHX_ &temp);
873	load_perl (coro);	1100	load_perl (aTHX_ coro);
874		1101
875	coro_destroy_stacks ();	1102	coro_destroy (aTHX_ coro);
876		1103
877	load_perl (&temp); /* this will get rid of defsv etc.. */	1104	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		1105
879	coro->mainstack = 0;	1106	coro->mainstack = 0;
880	}	1107	}
881		1108
882	cctx_destroy (coro->cctx);	1109	cctx_destroy (coro->cctx);
883	SvREFCNT_dec (coro->args);	1110	SvREFCNT_dec (coro->args);
884		1111
		1112	if (coro->next) coro->next->prev = coro->prev;
		1113	if (coro->prev) coro->prev->next = coro->next;
		1114	if (coro == coro_first) coro_first = coro->next;
		1115
885	return 1;	1116	return 1;
886	}	1117	}
887		1118
888	static int	1119	static int
889	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1120	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890	{	1121	{
891	struct coro *coro = (struct coro *)mg->mg_ptr;	1122	struct coro *coro = (struct coro *)mg->mg_ptr;
892	mg->mg_ptr = 0;	1123	mg->mg_ptr = 0;
893		1124
		1125	coro->hv = 0;
		1126
894	if (--coro->refcnt < 0)	1127	if (--coro->refcnt < 0)
895	{	1128	{
896	coro_state_destroy (coro);	1129	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	1130	Safefree (coro);
898	}	1131	}
899		1132
900	return 0;	1133	return 0;
901	}	1134	}
…		…
919	#else	1152	#else
920	# define MGf_DUP 0	1153	# define MGf_DUP 0
921	#endif	1154	#endif
922	};	1155	};
923		1156
924	static struct coro *
925	SvSTATE (SV *coro)
926	{
927	HV *stash;
928	MAGIC *mg;
929
930	if (SvROK (coro))
931	coro = SvRV (coro);
932
933	stash = SvSTASH (coro);
934	if (stash != coro_stash && stash != coro_state_stash)
935	{
936	/* very slow, but rare, check */
937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
938	croak ("Coro::State object required");
939	}
940
941	mg = CORO_MAGIC (coro);
942	return (struct coro *)mg->mg_ptr;
943	}
944
945	static void	1157	static void
946	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1158	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947	{	1159	{
948	ta->prev = SvSTATE (prev_sv);	1160	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	1161	ta->next = SvSTATE (next_sv);
		1162	TRANSFER_CHECK (*ta);
950	}	1163	}
951		1164
952	static void	1165	static void
953	api_transfer (SV *prev_sv, SV *next_sv)	1166	api_transfer (SV *prev_sv, SV *next_sv)
954	{	1167	{
		1168	dTHX;
955	struct transfer_args ta;	1169	struct transfer_args ta;
956		1170
957	prepare_transfer (&ta, prev_sv, next_sv);	1171	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
958	TRANSFER (ta);	1172	TRANSFER (ta);
959	}	1173	}
960		1174
961	static int
962	api_save (SV *coro_sv, int new_save)
963	{
964	struct coro *coro = SvSTATE (coro_sv);
965	int old_save = coro->save;
966
967	if (new_save >= 0)
968	coro->save = new_save;
969
970	return old_save;
971	}
972
973	/** Coro ********************************************************************/	1175	/** Coro ********************************************************************/
974		1176
975	static void	1177	static void
976	coro_enq (SV *coro_sv)	1178	coro_enq (pTHX_ SV *coro_sv)
977	{	1179	{
978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1180	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
979	}	1181	}
980		1182
981	static SV *	1183	static SV *
982	coro_deq (int min_prio)	1184	coro_deq (pTHX_ int min_prio)
983	{	1185	{
984	int prio = PRIO_MAX - PRIO_MIN;	1186	int prio = PRIO_MAX - PRIO_MIN;
985		1187
986	min_prio -= PRIO_MIN;	1188	min_prio -= PRIO_MIN;
987	if (min_prio < 0)	1189	if (min_prio < 0)
…		…
995	}	1197	}
996		1198
997	static int	1199	static int
998	api_ready (SV *coro_sv)	1200	api_ready (SV *coro_sv)
999	{	1201	{
		1202	dTHX;
1000	struct coro *coro;	1203	struct coro *coro;
1001		1204
1002	if (SvROK (coro_sv))	1205	if (SvROK (coro_sv))
1003	coro_sv = SvRV (coro_sv);	1206	coro_sv = SvRV (coro_sv);
1004		1207
…		…
1008	return 0;	1211	return 0;
1009		1212
1010	coro->flags |= CF_READY;	1213	coro->flags |= CF_READY;
1011		1214
1012	LOCK;	1215	LOCK;
1013	coro_enq (SvREFCNT_inc (coro_sv));	1216	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1014	++coro_nready;	1217	++coro_nready;
1015	UNLOCK;	1218	UNLOCK;
1016		1219
1017	return 1;	1220	return 1;
1018	}	1221	}
1019		1222
1020	static int	1223	static int
1021	api_is_ready (SV *coro_sv)	1224	api_is_ready (SV *coro_sv)
1022	{	1225	{
		1226	dTHX;
1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1227	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1024	}	1228	}
1025		1229
1026	static void	1230	static void
1027	prepare_schedule (struct transfer_args *ta)	1231	prepare_schedule (pTHX_ struct transfer_args *ta)
1028	{	1232	{
1029	SV *prev_sv, *next_sv;	1233	SV *prev_sv, *next_sv;
1030		1234
1031	for (;;)	1235	for (;;)
1032	{	1236	{
1033	LOCK;	1237	LOCK;
1034	next_sv = coro_deq (PRIO_MIN);	1238	next_sv = coro_deq (aTHX_ PRIO_MIN);
1035		1239
1036	/* nothing to schedule: call the idle handler */	1240	/* nothing to schedule: call the idle handler */
1037	if (!next_sv)	1241	if (!next_sv)
1038	{	1242	{
1039	dSP;	1243	dSP;
…		…
1067	break;	1271	break;
1068	}	1272	}
1069		1273
1070	/* free this only after the transfer */	1274	/* free this only after the transfer */
1071	prev_sv = SvRV (coro_current);	1275	prev_sv = SvRV (coro_current);
1072	SvRV_set (coro_current, next_sv);
1073	ta->prev = SvSTATE (prev_sv);	1276	ta->prev = SvSTATE (prev_sv);
1074		1277	TRANSFER_CHECK (*ta);
1075	assert (ta->next->flags & CF_READY);	1278	assert (ta->next->flags & CF_READY);
1076	ta->next->flags &= ~CF_READY;	1279	ta->next->flags &= ~CF_READY;
		1280	SvRV_set (coro_current, next_sv);
1077		1281
1078	LOCK;	1282	LOCK;
1079	free_coro_mortal ();	1283	free_coro_mortal (aTHX);
1080	coro_mortal = prev_sv;	1284	coro_mortal = prev_sv;
1081	UNLOCK;	1285	UNLOCK;
1082	}	1286	}
1083		1287
1084	static void	1288	static void
1085	prepare_cede (struct transfer_args *ta)	1289	prepare_cede (pTHX_ struct transfer_args *ta)
1086	{	1290	{
1087	api_ready (coro_current);	1291	api_ready (coro_current);
1088	prepare_schedule (ta);	1292	prepare_schedule (aTHX_ ta);
1089	}	1293	}
1090		1294
1091	static int	1295	static int
1092	prepare_cede_notself (struct transfer_args *ta)	1296	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1093	{	1297	{
1094	if (coro_nready)	1298	if (coro_nready)
1095	{	1299	{
1096	SV *prev = SvRV (coro_current);	1300	SV *prev = SvRV (coro_current);
1097	prepare_schedule (ta);	1301	prepare_schedule (aTHX_ ta);
1098	api_ready (prev);	1302	api_ready (prev);
1099	return 1;	1303	return 1;
1100	}	1304	}
1101	else	1305	else
1102	return 0;	1306	return 0;
1103	}	1307	}
1104		1308
1105	static void	1309	static void
1106	api_schedule (void)	1310	api_schedule (void)
1107	{	1311	{
		1312	dTHX;
1108	struct transfer_args ta;	1313	struct transfer_args ta;
1109		1314
1110	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1111	TRANSFER (ta);	1316	TRANSFER (ta);
1112	}	1317	}
1113		1318
1114	static int	1319	static int
1115	api_cede (void)	1320	api_cede (void)
1116	{	1321	{
		1322	dTHX;
1117	struct transfer_args ta;	1323	struct transfer_args ta;
1118		1324
1119	prepare_cede (&ta);	1325	prepare_cede (aTHX_ &ta);
1120		1326
1121	if (ta.prev != ta.next)	1327	if (ta.prev != ta.next)
1122	{	1328	{
1123	TRANSFER (ta);	1329	TRANSFER (ta);
1124	return 1;	1330	return 1;
…		…
1128	}	1334	}
1129		1335
1130	static int	1336	static int
1131	api_cede_notself (void)	1337	api_cede_notself (void)
1132	{	1338	{
		1339	dTHX;
1133	struct transfer_args ta;	1340	struct transfer_args ta;
1134		1341
1135	if (prepare_cede_notself (&ta))	1342	if (prepare_cede_notself (aTHX_ &ta))
1136	{	1343	{
1137	TRANSFER (ta);	1344	TRANSFER (ta);
1138	return 1;	1345	return 1;
1139	}	1346	}
1140	else	1347	else
1141	return 0;	1348	return 0;
1142	}	1349	}
1143		1350
		1351	static void
		1352	api_trace (SV *coro_sv, int flags)
		1353	{
		1354	dTHX;
		1355	struct coro *coro = SvSTATE (coro_sv);
		1356
		1357	if (flags & CC_TRACE)
		1358	{
		1359	if (!coro->cctx)
		1360	coro->cctx = cctx_new ();
		1361	else if (!(coro->cctx->flags & CC_TRACE))
		1362	croak ("cannot enable tracing on coroutine with custom stack");
		1363
		1364	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1365	}
		1366	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1367	{
		1368	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1369
		1370	if (coro->flags & CF_RUNNING)
		1371	PL_runops = RUNOPS_DEFAULT;
		1372	else
		1373	coro->runops = RUNOPS_DEFAULT;
		1374	}
		1375	}
		1376
1144	MODULE = Coro::State PACKAGE = Coro::State	1377	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1145		1378
1146	PROTOTYPES: DISABLE	1379	PROTOTYPES: DISABLE
1147		1380
1148	BOOT:	1381	BOOT:
1149	{	1382	{
1150	#ifdef USE_ITHREADS	1383	#ifdef USE_ITHREADS
1151	MUTEX_INIT (&coro_mutex);	1384	MUTEX_INIT (&coro_mutex);
1152	#endif	1385	#endif
1153	BOOT_PAGESIZE;	1386	BOOT_PAGESIZE;
1154		1387
		1388	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1389	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1390
1155	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1391	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1156		1392
		1393	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1394	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1157	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1395	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1158	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1159	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1160	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1161	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1162		1397
1163	main_mainstack = PL_mainstack;	1398	main_mainstack = PL_mainstack;
		1399	main_top_env = PL_top_env;
		1400
		1401	while (main_top_env->je_prev)
		1402	main_top_env = main_top_env->je_prev;
1164		1403
1165	coroapi.ver = CORO_API_VERSION;	1404	coroapi.ver = CORO_API_VERSION;
1166	coroapi.transfer = api_transfer;	1405	coroapi.transfer = api_transfer;
1167		1406
1168	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1407	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1175	struct coro *coro;	1414	struct coro *coro;
1176	HV *hv;	1415	HV *hv;
1177	int i;	1416	int i;
1178		1417
1179	Newz (0, coro, 1, struct coro);	1418	Newz (0, coro, 1, struct coro);
1180	coro->args = newAV ();	1419	coro->args = newAV ();
1181	coro->save = CORO_SAVE_ALL;
1182	coro->flags = CF_NEW;	1420	coro->flags = CF_NEW;
1183		1421
		1422	if (coro_first) coro_first->prev = coro;
		1423	coro->next = coro_first;
		1424	coro_first = coro;
		1425
1184	hv = newHV ();	1426	coro->hv = hv = newHV ();
1185	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1427	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1186	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1428	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1187		1429
1188	for (i = 1; i < items; i++)	1430	for (i = 1; i < items; i++)
1189	av_push (coro->args, newSVsv (ST (i)));	1431	av_push (coro->args, newSVsv (ST (i)));
1190	}	1432	}
1191	OUTPUT:	1433	OUTPUT:
1192	RETVAL	1434	RETVAL
1193		1435
1194	int	1436	# these not obviously related functions are all rolled into the same xs
1195	save (SV *coro, int new_save = -1)	1437	# function to increase chances that they all will call transfer with the same
1196	CODE:	1438	# stack offset
1197	RETVAL = api_save (coro, new_save);
1198	OUTPUT:
1199	RETVAL
1200
1201	void	1439	void
1202	_set_stacklevel (...)	1440	_set_stacklevel (...)
1203	ALIAS:	1441	ALIAS:
1204	Coro::State::transfer = 1	1442	Coro::State::transfer = 1
1205	Coro::schedule = 2	1443	Coro::schedule = 2
…		…
1218		1456
1219	case 1:	1457	case 1:
1220	if (items != 2)	1458	if (items != 2)
1221	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1459	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1222		1460
1223	prepare_transfer (&ta, ST (0), ST (1));	1461	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1224	break;	1462	break;
1225		1463
1226	case 2:	1464	case 2:
1227	prepare_schedule (&ta);	1465	prepare_schedule (aTHX_ &ta);
1228	break;	1466	break;
1229		1467
1230	case 3:	1468	case 3:
1231	prepare_cede (&ta);	1469	prepare_cede (aTHX_ &ta);
1232	break;	1470	break;
1233		1471
1234	case 4:	1472	case 4:
1235	if (!prepare_cede_notself (&ta))	1473	if (!prepare_cede_notself (aTHX_ &ta))
1236	XSRETURN_EMPTY;	1474	XSRETURN_EMPTY;
1237		1475
1238	break;	1476	break;
1239	}	1477	}
1240		1478
…		…
1246	}	1484	}
1247		1485
1248	bool	1486	bool
1249	_destroy (SV *coro_sv)	1487	_destroy (SV *coro_sv)
1250	CODE:	1488	CODE:
1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1489	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1252	OUTPUT:	1490	OUTPUT:
1253	RETVAL	1491	RETVAL
1254		1492
1255	void	1493	void
1256	_exit (code)	1494	_exit (code)
…		…
1258	PROTOTYPE: $	1496	PROTOTYPE: $
1259	CODE:	1497	CODE:
1260	_exit (code);	1498	_exit (code);
1261		1499
1262	int	1500	int
		1501	cctx_stacksize (int new_stacksize = 0)
		1502	CODE:
		1503	RETVAL = coro_stacksize;
		1504	if (new_stacksize)
		1505	coro_stacksize = new_stacksize;
		1506	OUTPUT:
		1507	RETVAL
		1508
		1509	int
1263	cctx_count ()	1510	cctx_count ()
1264	CODE:	1511	CODE:
1265	RETVAL = cctx_count;	1512	RETVAL = cctx_count;
1266	OUTPUT:	1513	OUTPUT:
1267	RETVAL	1514	RETVAL
…		…
1271	CODE:	1518	CODE:
1272	RETVAL = cctx_idle;	1519	RETVAL = cctx_idle;
1273	OUTPUT:	1520	OUTPUT:
1274	RETVAL	1521	RETVAL
1275		1522
		1523	void
		1524	list ()
		1525	PPCODE:
		1526	{
		1527	struct coro *coro;
		1528	for (coro = coro_first; coro; coro = coro->next)
		1529	if (coro->hv)
		1530	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1531	}
		1532
		1533	void
		1534	call (Coro::State coro, SV *coderef)
		1535	ALIAS:
		1536	eval = 1
		1537	CODE:
		1538	{
		1539	if (coro->mainstack)
		1540	{
		1541	struct coro temp;
		1542	Zero (&temp, 1, struct coro);
		1543
		1544	if (!(coro->flags & CF_RUNNING))
		1545	{
		1546	save_perl (aTHX_ &temp);
		1547	load_perl (aTHX_ coro);
		1548	}
		1549
		1550	{
		1551	dSP;
		1552	ENTER;
		1553	SAVETMPS;
		1554	PUSHMARK (SP);
		1555	PUTBACK;
		1556	if (ix)
		1557	eval_sv (coderef, 0);
		1558	else
		1559	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1560	SPAGAIN;
		1561	FREETMPS;
		1562	LEAVE;
		1563	PUTBACK;
		1564	}
		1565
		1566	if (!(coro->flags & CF_RUNNING))
		1567	{
		1568	save_perl (aTHX_ coro);
		1569	load_perl (aTHX_ &temp);
		1570	}
		1571	}
		1572	}
		1573
		1574	SV *
		1575	is_ready (Coro::State coro)
		1576	PROTOTYPE: $
		1577	ALIAS:
		1578	is_ready = CF_READY
		1579	is_running = CF_RUNNING
		1580	is_new = CF_NEW
		1581	is_destroyed = CF_DESTROYED
		1582	CODE:
		1583	RETVAL = boolSV (coro->flags & ix);
		1584	OUTPUT:
		1585	RETVAL
		1586
		1587	void
		1588	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1589
		1590	SV *
		1591	has_stack (Coro::State coro)
		1592	PROTOTYPE: $
		1593	CODE:
		1594	RETVAL = boolSV (!!coro->cctx);
		1595	OUTPUT:
		1596	RETVAL
		1597
		1598	int
		1599	is_traced (Coro::State coro)
		1600	PROTOTYPE: $
		1601	CODE:
		1602	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	IV
		1607	rss (Coro::State coro)
		1608	PROTOTYPE: $
		1609	ALIAS:
		1610	usecount = 1
		1611	CODE:
		1612	switch (ix)
		1613	{
		1614	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1615	case 1: RETVAL = coro->usecount; break;
		1616	}
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620
1276	MODULE = Coro::State PACKAGE = Coro	1621	MODULE = Coro::State PACKAGE = Coro
1277		1622
1278	BOOT:	1623	BOOT:
1279	{	1624	{
1280	int i;	1625	int i;
		1626
		1627	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1628	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1629	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1630
		1631	coro_current = get_sv ("Coro::current", FALSE);
		1632	SvREADONLY_on (coro_current);
1281		1633
1282	coro_stash = gv_stashpv ("Coro", TRUE);	1634	coro_stash = gv_stashpv ("Coro", TRUE);
1283		1635
1284	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1285	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1286	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1287	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1288	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1640	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1289	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1641	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1290		1642
1291	coro_current = get_sv ("Coro::current", FALSE);
1292	SvREADONLY_on (coro_current);
1293
1294	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1295	coro_ready[i] = newAV ();	1644	coro_ready[i] = newAV ();
1296		1645
1297	{	1646	{
1298	SV *sv = perl_get_sv("Coro::API", 1);	1647	SV *sv = perl_get_sv("Coro::API", 1);
1299		1648
1300	coroapi.schedule = api_schedule;	1649	coroapi.schedule = api_schedule;
1301	coroapi.save = api_save;
1302	coroapi.cede = api_cede;	1650	coroapi.cede = api_cede;
1303	coroapi.cede_notself = api_cede_notself;	1651	coroapi.cede_notself = api_cede_notself;
1304	coroapi.ready = api_ready;	1652	coroapi.ready = api_ready;
1305	coroapi.is_ready = api_is_ready;	1653	coroapi.is_ready = api_is_ready;
1306	coroapi.nready = &coro_nready;	1654	coroapi.nready = &coro_nready;
…		…
1347	CODE:	1695	CODE:
1348	RETVAL = boolSV (api_ready (self));	1696	RETVAL = boolSV (api_ready (self));
1349	OUTPUT:	1697	OUTPUT:
1350	RETVAL	1698	RETVAL
1351		1699
1352	SV *
1353	is_ready (SV *self)
1354	PROTOTYPE: $
1355	CODE:
1356	RETVAL = boolSV (api_is_ready (self));
1357	OUTPUT:
1358	RETVAL
1359
1360	int	1700	int
1361	nready (...)	1701	nready (...)
1362	PROTOTYPE:	1702	PROTOTYPE:
1363	CODE:	1703	CODE:
1364	RETVAL = coro_nready;	1704	RETVAL = coro_nready;
1365	OUTPUT:	1705	OUTPUT:
1366	RETVAL	1706	RETVAL
1367		1707
		1708	# for async_pool speedup
		1709	void
		1710	_pool_1 (SV *cb)
		1711	CODE:
		1712	{
		1713	struct coro *coro = SvSTATE (coro_current);
		1714	HV *hv = (HV *)SvRV (coro_current);
		1715	AV *defav = GvAV (PL_defgv);
		1716	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1717	AV *invoke_av;
		1718	int i, len;
		1719
		1720	if (!invoke)
		1721	croak ("\3terminate\2\n");
		1722
		1723	SvREFCNT_dec (coro->saved_deffh);
		1724	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1725
		1726	hv_store (hv, "desc", sizeof ("desc") - 1,
		1727	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1728
		1729	invoke_av = (AV *)SvRV (invoke);
		1730	len = av_len (invoke_av);
		1731
		1732	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1733
		1734	if (len > 0)
		1735	{
		1736	av_fill (defav, len - 1);
		1737	for (i = 0; i < len; ++i)
		1738	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1739	}
		1740
		1741	SvREFCNT_dec (invoke);
		1742	}
		1743
		1744	void
		1745	_pool_2 (SV *cb)
		1746	CODE:
		1747	{
		1748	struct coro *coro = SvSTATE (coro_current);
		1749
		1750	sv_setsv (cb, &PL_sv_undef);
		1751
		1752	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1753	coro->saved_deffh = 0;
		1754
		1755	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1756	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1757	croak ("\3terminate\2\n");
		1758
		1759	av_clear (GvAV (PL_defgv));
		1760	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1761	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1762
		1763	coro->prio = 0;
		1764
		1765	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1766	api_trace (coro_current, 0);
		1767
		1768	av_push (av_async_pool, newSVsv (coro_current));
		1769	}
		1770
		1771
1368	MODULE = Coro::State PACKAGE = Coro::AIO	1772	MODULE = Coro::State PACKAGE = Coro::AIO
1369		1773
1370	SV *	1774	SV *
1371	_get_state ()	1775	_get_state ()
1372	CODE:	1776	CODE:

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