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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 1.180 by root, Wed Oct 3 17:12:20 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
…		…
86	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
87	#ifndef CORO_PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define CORO_PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
89	#endif	91	#endif
90		92
91	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* 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	94	* portable way as possible. */
93	* and should be unique. */
94	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
95	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
96		97
97	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
98		99
99	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
…		…
124	I32 laststype;	125	I32 laststype;
125	int laststatval;	126	int laststatval;
126	Stat_t statcache;	127	Stat_t statcache;
127	};	128	};
128		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
130	static AV *main_mainstack; /* used to differentiate between $main and others */	132	static AV *main_mainstack; /* used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
131	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
132	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
133		136
		137	static GV *irsgv; /* $/ */
		138
		139	/* async_pool helper stuff */
		140	static SV *sv_pool_rss;
		141	static SV *sv_pool_size;
		142	static AV *av_async_pool;
		143
134	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	145	static int cctx_count, cctx_idle;
		146
		147	enum {
		148	CC_MAPPED = 0x01,
		149	CC_NOREUSE = 0x02, /* throw this away after tracing */
		150	CC_TRACE = 0x04,
		151	CC_TRACE_SUB = 0x08, /* trace sub calls */
		152	CC_TRACE_LINE = 0x10, /* trace each statement */
		153	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		154	};
136		155
137	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
138	typedef struct coro_cctx {	157	typedef struct coro_cctx {
139	struct coro_cctx *next;	158	struct coro_cctx *next;
140		159
141	/* the stack */	160	/* the stack */
142	void *sptr;	161	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
144		163
145	/* cpu state */	164	/* cpu state */
146	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	165	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 */	166	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	167	JMPENV *top_env;
149	coro_context cctx;	168	coro_context cctx;
150		169
151	int inuse;
152
153	#if CORO_USE_VALGRIND	170	#if CORO_USE_VALGRIND
154	int valgrind_id;	171	int valgrind_id;
155	#endif	172	#endif
		173	unsigned char flags;
156	} coro_cctx;	174	} coro_cctx;
157		175
158	enum {	176	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	177	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	178	CF_READY = 0x0002, /* coroutine is ready */
…		…
168	coro_cctx *cctx;	186	coro_cctx *cctx;
169		187
170	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
171	AV *args;	189	AV *args;
172	int refcnt;	190	int refcnt;
173	int save; /* CORO_SAVE flags */
174	int flags; /* CF_ flags */	191	int flags; /* CF_ flags */
175		192
176	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	194	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	195	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	196	SV *errsv; /* $@ */
		197	IO *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	198	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	199	SV *irssv_sv; /* real $/ cache */
182		200
183	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
184	# include "state.h"	202	# include "state.h"
185	#undef VAR	203	#undef VAR
186		204
		205	/* statistics */
		206	int usecount; /* number of switches to this coro */
		207
187	/* coro process data */	208	/* coro process data */
188	int prio;	209	int prio;
		210
		211	/* linked list */
		212	struct coro *next, *prev;
		213	HV *hv; /* the perl hash associated with this coro, if any */
189	};	214	};
190		215
191	typedef struct coro *Coro__State;	216	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	217	typedef struct coro *Coro__State_or_hashref;
193		218
…		…
202		227
203	/* for Coro.pm */	228	/* for Coro.pm */
204	static SV *coro_current;	229	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	230	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	231	static int coro_nready;
		232	static struct coro *coro_first;
207		233
208	/** lowlevel stuff **********************************************************/	234	/** lowlevel stuff **********************************************************/
209		235
210	static AV *	236	static AV *
211	coro_clone_padlist (CV *cv)	237	coro_clone_padlist (pTHX_ CV *cv)
212	{	238	{
213	AV *padlist = CvPADLIST (cv);	239	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	240	AV *newpadlist, *newpad;
215		241
216	newpadlist = newAV ();	242	newpadlist = newAV ();
…		…
228		254
229	return newpadlist;	255	return newpadlist;
230	}	256	}
231		257
232	static void	258	static void
233	free_padlist (AV *padlist)	259	free_padlist (pTHX_ AV *padlist)
234	{	260	{
235	/* may be during global destruction */	261	/* may be during global destruction */
236	if (SvREFCNT (padlist))	262	if (SvREFCNT (padlist))
237	{	263	{
238	I32 i = AvFILLp (padlist);	264	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	285	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	286	AV *av = (AV *)mg->mg_obj;
261		287
262	/* casting is fun. */	288	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	289	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	290	free_padlist (aTHX_ padlist);
265		291
266	SvREFCNT_dec (av);	292	SvREFCNT_dec (av);
267		293
268	return 0;	294	return 0;
269	}	295	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	303	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	304	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	305	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	306	: 0
281		307
		308	static struct coro *
		309	SvSTATE_ (pTHX_ SV *coro)
		310	{
		311	HV *stash;
		312	MAGIC *mg;
		313
		314	if (SvROK (coro))
		315	coro = SvRV (coro);
		316
		317	if (SvTYPE (coro) != SVt_PVHV)
		318	croak ("Coro::State object required");
		319
		320	stash = SvSTASH (coro);
		321	if (stash != coro_stash && stash != coro_state_stash)
		322	{
		323	/* very slow, but rare, check */
		324	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		325	croak ("Coro::State object required");
		326	}
		327
		328	mg = CORO_MAGIC (coro);
		329	return (struct coro *)mg->mg_ptr;
		330	}
		331
		332	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		333
282	/* the next two functions merely cache the padlists */	334	/* the next two functions merely cache the padlists */
283	static void	335	static void
284	get_padlist (CV *cv)	336	get_padlist (pTHX_ CV *cv)
285	{	337	{
286	MAGIC *mg = CORO_MAGIC (cv);	338	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	339	AV *av;
288		340
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	341	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
…		…
295	CV *cp = Perl_cv_clone (cv);	347	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	348	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	349	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	350	SvREFCNT_dec (cp);
299	#else	351	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	352	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	353	#endif
302	}	354	}
303	}	355	}
304		356
305	static void	357	static void
306	put_padlist (CV *cv)	358	put_padlist (pTHX_ CV *cv)
307	{	359	{
308	MAGIC *mg = CORO_MAGIC (cv);	360	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	361	AV *av;
310		362
311	if (!mg)	363	if (!mg)
…		…
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	376	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	377	}
326		378
327	/** load & save, init *******************************************************/	379	/** load & save, init *******************************************************/
328		380
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	381	static void
335	load_perl (Coro__State c)	382	load_perl (pTHX_ Coro__State c)
336	{	383	{
337	#define VAR(name,type) PL_ ## name = c->name;	384	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	385	# include "state.h"
339	#undef VAR	386	#undef VAR
340		387
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	388	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	389	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	390	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	391	PL_defoutgv = c->deffh;
345	{	392	PL_rs = c->irssv;
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	393	GvSV (irsgv) = c->irssv_sv;
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		394
356	{	395	{
357	dSP;	396	dSP;
358	CV *cv;	397	CV *cv;
359		398
360	/* now do the ugly restore mess */	399	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	400	while ((cv = (CV *)POPs))
362	{	401	{
363	put_padlist (cv); /* mark this padlist as available */	402	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	403	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	404	CvPADLIST (cv) = (AV *)POPs;
366	}	405	}
367		406
368	PUTBACK;	407	PUTBACK;
369	}	408	}
370	assert (!PL_comppad || AvARRAY (PL_comppad));//D
371	}	409	}
372		410
373	static void	411	static void
374	save_perl (Coro__State c)	412	save_perl (pTHX_ Coro__State c)
375	{	413	{
376	assert (!PL_comppad || AvARRAY (PL_comppad));//D
377	{	414	{
378	dSP;	415	dSP;
379	I32 cxix = cxstack_ix;	416	I32 cxix = cxstack_ix;
380	PERL_CONTEXT *ccstk = cxstack;	417	PERL_CONTEXT *ccstk = cxstack;
381	PERL_SI *top_si = PL_curstackinfo;	418	PERL_SI *top_si = PL_curstackinfo;
…		…
383	/*	420	/*
384	* the worst thing you can imagine happens first - we have to save	421	* the worst thing you can imagine happens first - we have to save
385	* (and reinitialize) all cv's in the whole callchain :(	422	* (and reinitialize) all cv's in the whole callchain :(
386	*/	423	*/
387		424
388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	425	XPUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	426	/* this loop was inspired by pp_caller */
391	for (;;)	427	for (;;)
392	{	428	{
393	while (cxix >= 0)	429	while (cxix >= 0)
394	{	430	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	431	PERL_CONTEXT *cx = &ccstk[cxix--];
396		432
397	if (CxTYPE (cx) == CXt_SUB)	433	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
398	{	434	{
399	CV *cv = cx->blk_sub.cv;	435	CV *cv = cx->blk_sub.cv;
400		436
401	if (CvDEPTH (cv))	437	if (CvDEPTH (cv))
402	{	438	{
…		…
404	PUSHs ((SV *)CvPADLIST (cv));	440	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	441	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	442	PUSHs ((SV *)cv);
407		443
408	CvDEPTH (cv) = 0;	444	CvDEPTH (cv) = 0;
409	get_padlist (cv);	445	get_padlist (aTHX_ cv);
410	}	446	}
411	}	447	}
412	}	448	}
413		449
414	if (top_si->si_type == PERLSI_MAIN)	450	if (top_si->si_type == PERLSI_MAIN)
415	break;	451	break;
416		452
417	top_si = top_si->si_prev;	453	top_si = top_si->si_prev;
418	ccstk = top_si->si_cxstack;	454	ccstk = top_si->si_cxstack;
419	cxix = top_si->si_cxix;	455	cxix = top_si->si_cxix;
420	}	456	}
421		457
422	PUTBACK;	458	PUTBACK;
423	}	459	}
424		460
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	461	c->defav = GvAV (PL_defgv);
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	462	c->defsv = DEFSV;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	463	c->errsv = ERRSV;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	464	c->deffh = PL_defoutgv;
		465	c->irssv = PL_rs;
		466	c->irssv_sv = GvSV (irsgv);
429		467
430	#define VAR(name,type)c->name = PL_ ## name;	468	#define VAR(name,type)c->name = PL_ ## name;
431	# include "state.h"	469	# include "state.h"
432	#undef VAR	470	#undef VAR
433	}	471	}
…		…
440	*/	478	*/
441	#if CORO_PREFER_PERL_FUNCTIONS	479	#if CORO_PREFER_PERL_FUNCTIONS
442	# define coro_init_stacks init_stacks	480	# define coro_init_stacks init_stacks
443	#else	481	#else
444	static void	482	static void
445	coro_init_stacks ()	483	coro_init_stacks (pTHX)
446	{	484	{
447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	485	PL_curstackinfo = new_stackinfo(64, 6);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		489
452	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		493
456	New(50,PL_tmps_stack,128,SV*);	494	New(50,PL_tmps_stack,64,SV*);
457	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
459	PL_tmps_max = 128;	497	PL_tmps_max = 64;
460		498
461	New(54,PL_markstack,32,I32);	499	New(54,PL_markstack,16,I32);
462	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 32;	501	PL_markstack_max = PL_markstack + 16;
464		502
465	#ifdef SET_MARK_OFFSET	503	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	504	SET_MARK_OFFSET;
467	#endif	505	#endif
468		506
469	New(54,PL_scopestack,32,I32);	507	New(54,PL_scopestack,16,I32);
470	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
471	PL_scopestack_max = 32;	509	PL_scopestack_max = 16;
472		510
473	New(54,PL_savestack,64,ANY);	511	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
475	PL_savestack_max = 64;	513	PL_savestack_max = 64;
476		514
477	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,16,OP*);	516	New(54,PL_retstack,4,OP*);
479	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
480	PL_retstack_max = 16;	518	PL_retstack_max = 4;
481	#endif	519	#endif
482	}	520	}
483	#endif	521	#endif
484		522
485	/*	523	/*
486	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
487	*/	525	*/
488	static void	526	static void
489	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
490	{	528	{
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)	529	while (PL_curstackinfo->si_next)
509	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
510		531
511	while (PL_curstackinfo)	532	while (PL_curstackinfo)
512	{	533	{
…		…
527	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	549	Safefree (PL_retstack);
529	#endif	550	#endif
530	}	551	}
531		552
		553	static size_t
		554	coro_rss (pTHX_ struct coro *coro)
		555	{
		556	size_t rss = sizeof (coro);
		557
		558	if (coro->mainstack)
		559	{
		560	if (coro->flags & CF_RUNNING)
		561	{
		562	#define VAR(name,type)coro->name = PL_ ## name;
		563	# include "state.h"
		564	#undef VAR
		565	}
		566
		567	rss += sizeof (coro->curstackinfo);
		568	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
532	/** coroutine stack handling ************************************************/	584	/** coroutine stack handling ************************************************/
533		585
534	static void	586	static void
535	setup_coro (struct coro *coro)	587	coro_setup (pTHX_ struct coro *coro)
536	{	588	{
537	/*	589	/*
538	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
539	*/	591	*/
540
541	coro_init_stacks ();	592	coro_init_stacks (aTHX);
542		593
		594	PL_runops = RUNOPS_DEFAULT;
543	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	597	PL_comppad = 0;
546	PL_curpm = 0;	598	PL_curpm = 0;
547	PL_localizing = 0;	599	PL_localizing = 0;
548	PL_dirty = 0;	600	PL_dirty = 0;
549	PL_restartop = 0;	601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = newGVgen ("Coro");
		612	GvIOp(PL_defoutgv) = io;
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) |= IOf_FLUSH;
		616	}
550		617
551	{	618	{
552	dSP;	619	dSP;
553	LOGOP myop;	620	LOGOP myop;
554		621
555	SvREFCNT_dec (GvAV (PL_defgv));
556	GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558	Zero (&myop, 1, LOGOP);	622	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	623	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	624	myop.op_flags = OPf_WANT_VOID;
561		625
562	PUSHMARK (SP);	626	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	627	XPUSHs (av_shift (GvAV (PL_defgv)));
564	PUTBACK;	628	PUTBACK;
565	PL_op = (OP *)&myop;	629	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	631	SPAGAIN;
568	}	632	}
569		633
570	ENTER; /* necessary e.g. for dounwind */	634	ENTER; /* necessary e.g. for dounwind */
571	}	635	}
572		636
573	static void	637	static void
		638	coro_destroy (pTHX_ struct coro *coro)
		639	{
		640	if (!IN_DESTRUCT)
		641	{
		642	/* restore all saved variables and stuff */
		643	LEAVE_SCOPE (0);
		644	assert (PL_tmps_floor == -1);
		645
		646	/* free all temporaries */
		647	FREETMPS;
		648	assert (PL_tmps_ix == -1);
		649
		650	/* unwind all extra stacks */
		651	POPSTACK_TO (PL_mainstack);
		652
		653	/* unwind main stack */
		654	dounwind (-1);
		655	}
		656
		657	SvREFCNT_dec (GvSV (PL_defgv));
		658	SvREFCNT_dec (GvAV (PL_defgv));
		659	SvREFCNT_dec (GvSV (PL_errgv));
		660	SvREFCNT_dec (PL_defoutgv);
		661	SvREFCNT_dec (PL_rs);
		662	SvREFCNT_dec (GvSV (irsgv));
		663
		664	coro_destroy_stacks (aTHX);
		665	}
		666
		667	static void
574	free_coro_mortal ()	668	free_coro_mortal (pTHX)
575	{	669	{
576	if (coro_mortal)	670	if (coro_mortal)
577	{	671	{
578	SvREFCNT_dec (coro_mortal);	672	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	673	coro_mortal = 0;
580	}	674	}
581	}	675	}
582		676
		677	static int
		678	runops_trace (pTHX)
		679	{
		680	COP *oldcop = 0;
		681	int oldcxix = -2;
		682	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		683	coro_cctx *cctx = coro->cctx;
		684
		685	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		686	{
		687	PERL_ASYNC_CHECK ();
		688
		689	if (cctx->flags & CC_TRACE_ALL)
		690	{
		691	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		692	{
		693	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		694	SV **bot, **top;
		695	AV *av = newAV (); /* return values */
		696	SV **cb;
		697	dSP;
		698
		699	GV *gv = CvGV (cx->blk_sub.cv);
		700	SV *fullname = sv_2mortal (newSV (0));
		701	if (isGV (gv))
		702	gv_efullname3 (fullname, gv, 0);
		703
		704	bot = PL_stack_base + cx->blk_oldsp + 1;
		705	top = cx->blk_gimme == G_ARRAY ? SP + 1
		706	: cx->blk_gimme == G_SCALAR ? bot + 1
		707	: bot;
		708
		709	while (bot < top)
		710	av_push (av, SvREFCNT_inc (*bot++));
		711
		712	PL_runops = RUNOPS_DEFAULT;
		713	ENTER;
		714	SAVETMPS;
		715	EXTEND (SP, 3);
		716	PUSHMARK (SP);
		717	PUSHs (&PL_sv_no);
		718	PUSHs (fullname);
		719	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		720	PUTBACK;
		721	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		722	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		723	SPAGAIN;
		724	FREETMPS;
		725	LEAVE;
		726	PL_runops = runops_trace;
		727	}
		728
		729	if (oldcop != PL_curcop)
		730	{
		731	oldcop = PL_curcop;
		732
		733	if (PL_curcop != &PL_compiling)
		734	{
		735	SV **cb;
		736
		737	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		738	{
		739	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		740
		741	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		742	{
		743	runops_proc_t old_runops = PL_runops;
		744	dSP;
		745	GV *gv = CvGV (cx->blk_sub.cv);
		746	SV *fullname = sv_2mortal (newSV (0));
		747
		748	if (isGV (gv))
		749	gv_efullname3 (fullname, gv, 0);
		750
		751	PL_runops = RUNOPS_DEFAULT;
		752	ENTER;
		753	SAVETMPS;
		754	EXTEND (SP, 3);
		755	PUSHMARK (SP);
		756	PUSHs (&PL_sv_yes);
		757	PUSHs (fullname);
		758	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		759	PUTBACK;
		760	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		761	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		762	SPAGAIN;
		763	FREETMPS;
		764	LEAVE;
		765	PL_runops = runops_trace;
		766	}
		767
		768	oldcxix = cxstack_ix;
		769	}
		770
		771	if (cctx->flags & CC_TRACE_LINE)
		772	{
		773	dSP;
		774
		775	PL_runops = RUNOPS_DEFAULT;
		776	ENTER;
		777	SAVETMPS;
		778	EXTEND (SP, 3);
		779	PL_runops = RUNOPS_DEFAULT;
		780	PUSHMARK (SP);
		781	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		782	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		783	PUTBACK;
		784	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		785	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		786	SPAGAIN;
		787	FREETMPS;
		788	LEAVE;
		789	PL_runops = runops_trace;
		790	}
		791	}
		792	}
		793	}
		794	}
		795
		796	TAINT_NOT;
		797	return 0;
		798	}
		799
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	800	/* inject a fake call to Coro::State::_cctx_init into the execution */
		801	/* _cctx_init should be careful, as it could be called at almost any time */
		802	/* during execution of a perl program */
584	static void NOINLINE	803	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	804	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	805	{
587	dSP;	806	dSP;
588	LOGOP myop;	807	LOGOP myop;
		808
		809	PL_top_env = &PL_start_env;
		810
		811	if (cctx->flags & CC_TRACE)
		812	PL_runops = runops_trace;
589		813
590	Zero (&myop, 1, LOGOP);	814	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	815	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	816	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		817
…		…
599	PL_op = (OP *)&myop;	823	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	824	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	825	SPAGAIN;
602	}	826	}
603		827
		828	/*
		829	* this is a _very_ stripped down perl interpreter ;)
		830	*/
604	static void	831	static void
605	coro_run (void *arg)	832	coro_run (void *arg)
606	{	833	{
		834	dTHX;
		835
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	836	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	837	UNLOCK;
609		838
610	/*	839	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	840	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		841
615	/* inject call to cctx_init */	842	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	843	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		844
618	/* somebody will hit me for both perl_run and PL_restartop */	845	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	846	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	847	perl_run (PL_curinterp);
621		848
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	849	/*
623	abort ();	850	* If perl-run returns we assume exit() was being called or the coro
		851	* fell off the end, which seems to be the only valid (non-bug)
		852	* reason for perl_run to return. We try to exit by jumping to the
		853	* bootstrap-time "top" top_env, as we cannot restore the "main"
		854	* coroutine as Coro has no such concept
		855	*/
		856	PL_top_env = main_top_env;
		857	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	858	}
625		859
626	static coro_cctx *	860	static coro_cctx *
627	cctx_new ()	861	cctx_new ()
628	{	862	{
629	coro_cctx *cctx;	863	coro_cctx *cctx;
		864	void *stack_start;
		865	size_t stack_size;
630		866
631	++cctx_count;	867	++cctx_count;
632		868
633	Newz (0, cctx, 1, coro_cctx);	869	Newz (0, cctx, 1, coro_cctx);
634		870
635	#if HAVE_MMAP	871	#if HAVE_MMAP
636		872
637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	873	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	874	/* 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);	875	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640		876
641	if (cctx->sptr != (void *)-1)	877	if (cctx->sptr != (void *)-1)
642	{	878	{
643	# if CORO_STACKGUARD	879	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	880	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	881	# endif
646	REGISTER_STACK (
647	cctx,
648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,	882	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	883	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	884	cctx->flags |= CC_MAPPED;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	885	}
654	else	886	else
655	#endif	887	#endif
656	{	888	{
657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);	889	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, CORO_STACKSIZE, long);	890	New (0, cctx->sptr, coro_stacksize, long);
659		891
660	if (!cctx->sptr)	892	if (!cctx->sptr)
661	{	893	{
662	perror ("FATAL: unable to allocate stack for coroutine");	894	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	895	_exit (EXIT_FAILURE);
664	}	896	}
665		897
666	REGISTER_STACK (	898	stack_start = cctx->sptr;
667	cctx,	899	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	900	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		901
		902	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	903	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		904
675	return cctx;	905	return cctx;
676	}	906	}
677		907
678	static void	908	static void
…		…
686	#if CORO_USE_VALGRIND	916	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	917	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	918	#endif
689		919
690	#if HAVE_MMAP	920	#if HAVE_MMAP
691	if (cctx->ssize > 0)	921	if (cctx->flags & CC_MAPPED)
692	munmap (cctx->sptr, cctx->ssize);	922	munmap (cctx->sptr, cctx->ssize);
693	else	923	else
694	#endif	924	#endif
695	Safefree (cctx->sptr);	925	Safefree (cctx->sptr);
696		926
697	Safefree (cctx);	927	Safefree (cctx);
698	}	928	}
699		929
700	static coro_cctx *	930	static coro_cctx *
701	cctx_get ()	931	cctx_get (pTHX)
702	{	932	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	933	while (cctx_first)
706	{	934	{
707	cctx = cctx_first;	935	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	936	cctx_first = cctx->next;
709	--cctx_idle;	937	--cctx_idle;
710	}	938
711	else	939	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
712	{	940	return cctx;
713	cctx = cctx_new ();	941
714	PL_op = PL_op->op_next;	942	cctx_destroy (cctx);
715	}	943	}
716		944
717	return cctx;	945	return cctx_new ();
718	}	946	}
719		947
720	static void	948	static void
721	cctx_put (coro_cctx *cctx)	949	cctx_put (coro_cctx *cctx)
722	{	950	{
…		…
725	{	953	{
726	coro_cctx *first = cctx_first;	954	coro_cctx *first = cctx_first;
727	cctx_first = first->next;	955	cctx_first = first->next;
728	--cctx_idle;	956	--cctx_idle;
729		957
730	assert (!first->inuse);
731	cctx_destroy (first);	958	cctx_destroy (first);
732	}	959	}
733		960
734	++cctx_idle;	961	++cctx_idle;
735	cctx->next = cctx_first;	962	cctx->next = cctx_first;
736	cctx_first = cctx;	963	cctx_first = cctx;
737	}	964	}
738		965
739	/** coroutine switching *****************************************************/	966	/** coroutine switching *****************************************************/
740		967
741	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	968	static void NOINLINE
		969	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		970	{
		971	if (prev != next)
		972	{
		973	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		974	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		975
		976	if (next->flags & CF_RUNNING)
		977	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		978
		979	if (next->flags & CF_DESTROYED)
		980	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		981
		982	if (PL_lex_state != LEX_NOTPARSING)
		983	croak ("Coro::State::transfer called while parsing, but this is not supported");
		984	}
		985	}
		986
		987	/* always use the TRANSFER macro */
		988	static void NOINLINE
743	transfer (struct coro *prev, struct coro *next)	989	transfer (pTHX_ struct coro *prev, struct coro *next)
744	{	990	{
745	dSTACKLEVEL;	991	dSTACKLEVEL;
746		992
747	/* sometimes transfer is only called to set idle_sp */	993	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	994	if (!next)
…		…
756		1002
757	if (prev->flags & CF_NEW)	1003	if (prev->flags & CF_NEW)
758	{	1004	{
759	/* create a new empty context */	1005	/* create a new empty context */
760	Newz (0, prev->cctx, 1, coro_cctx);	1006	Newz (0, prev->cctx, 1, coro_cctx);
761	prev->cctx->inuse = 1;
762	prev->flags &= ~CF_NEW;	1007	prev->flags &= ~CF_NEW;
763	prev->flags |= CF_RUNNING;	1008	prev->flags |= CF_RUNNING;
764	}	1009	}
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		1010
776	prev->flags &= ~CF_RUNNING;	1011	prev->flags &= ~CF_RUNNING;
777	next->flags |= CF_RUNNING;	1012	next->flags |= CF_RUNNING;
778		1013
779	LOCK;	1014	LOCK;
…		…
781	if (next->flags & CF_NEW)	1016	if (next->flags & CF_NEW)
782	{	1017	{
783	/* need to start coroutine */	1018	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	1019	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	1020	/* first get rid of the old state */
786	save_perl (prev);	1021	save_perl (aTHX_ prev);
787	/* setup coroutine call */	1022	/* setup coroutine call */
788	setup_coro (next);	1023	coro_setup (aTHX_ next);
789	/* need a new stack */
790	assert (!next->cctx);
791	}	1024	}
792	else	1025	else
793	{	1026	{
794	/* coroutine already started */	1027	/* coroutine already started */
795	save_perl (prev);	1028	save_perl (aTHX_ prev);
796	load_perl (next);	1029	load_perl (aTHX_ next);
797	}	1030	}
798		1031
799	prev__cctx = prev->cctx;	1032	prev__cctx = prev->cctx;
800		1033
801	/* possibly "free" the cctx */	1034	/* possibly "free" the cctx */
802	if (prev__cctx->idle_sp == STACKLEVEL)	1035	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
803	{	1036	{
804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1037	/* 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));	1038	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806		1039
807	prev->cctx = 0;	1040	prev->cctx = 0;
808		1041
809	cctx_put (prev__cctx);	1042	cctx_put (prev__cctx);
810	prev__cctx->inuse = 0;
811	}	1043	}
812		1044
		1045	++next->usecount;
		1046
813	if (!next->cctx)	1047	if (!next->cctx)
814	{
815	next->cctx = cctx_get ();	1048	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;
818	}
819		1049
820	if (prev__cctx != next->cctx)	1050	if (prev__cctx != next->cctx)
821	{	1051	{
822	prev__cctx->top_env = PL_top_env;	1052	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	1053	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1054	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	1055	}
826		1056
827	free_coro_mortal ();	1057	free_coro_mortal (aTHX);
828	UNLOCK;	1058	UNLOCK;
829	}	1059	}
830	}	1060	}
831		1061
832	struct transfer_args	1062	struct transfer_args
833	{	1063	{
834	struct coro *prev, *next;	1064	struct coro *prev, *next;
835	};	1065	};
836		1066
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1067	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1068	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838		1069
839	/** high level stuff ********************************************************/	1070	/** high level stuff ********************************************************/
840		1071
841	static int	1072	static int
842	coro_state_destroy (struct coro *coro)	1073	coro_state_destroy (pTHX_ struct coro *coro)
843	{	1074	{
844	if (coro->flags & CF_DESTROYED)	1075	if (coro->flags & CF_DESTROYED)
845	return 0;	1076	return 0;
846		1077
847	coro->flags |= CF_DESTROYED;	1078	coro->flags |= CF_DESTROYED;
…		…
859		1090
860	if (coro->mainstack && coro->mainstack != main_mainstack)	1091	if (coro->mainstack && coro->mainstack != main_mainstack)
861	{	1092	{
862	struct coro temp;	1093	struct coro temp;
863		1094
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)	1095	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	1096	croak ("FATAL: tried to destroy currently running coroutine");
871		1097
872	save_perl (&temp);	1098	save_perl (aTHX_ &temp);
873	load_perl (coro);	1099	load_perl (aTHX_ coro);
874		1100
875	coro_destroy_stacks ();	1101	coro_destroy (aTHX_ coro);
876		1102
877	load_perl (&temp); /* this will get rid of defsv etc.. */	1103	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		1104
879	coro->mainstack = 0;	1105	coro->mainstack = 0;
880	}	1106	}
881		1107
882	cctx_destroy (coro->cctx);	1108	cctx_destroy (coro->cctx);
883	SvREFCNT_dec (coro->args);	1109	SvREFCNT_dec (coro->args);
884		1110
		1111	if (coro->next) coro->next->prev = coro->prev;
		1112	if (coro->prev) coro->prev->next = coro->next;
		1113	if (coro == coro_first) coro_first = coro->next;
		1114
885	return 1;	1115	return 1;
886	}	1116	}
887		1117
888	static int	1118	static int
889	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1119	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890	{	1120	{
891	struct coro *coro = (struct coro *)mg->mg_ptr;	1121	struct coro *coro = (struct coro *)mg->mg_ptr;
892	mg->mg_ptr = 0;	1122	mg->mg_ptr = 0;
893		1123
		1124	coro->hv = 0;
		1125
894	if (--coro->refcnt < 0)	1126	if (--coro->refcnt < 0)
895	{	1127	{
896	coro_state_destroy (coro);	1128	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	1129	Safefree (coro);
898	}	1130	}
899		1131
900	return 0;	1132	return 0;
901	}	1133	}
…		…
919	#else	1151	#else
920	# define MGf_DUP 0	1152	# define MGf_DUP 0
921	#endif	1153	#endif
922	};	1154	};
923		1155
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	1156	static void
946	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1157	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947	{	1158	{
948	ta->prev = SvSTATE (prev_sv);	1159	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	1160	ta->next = SvSTATE (next_sv);
		1161	TRANSFER_CHECK (*ta);
950	}	1162	}
951		1163
952	static void	1164	static void
953	api_transfer (SV *prev_sv, SV *next_sv)	1165	api_transfer (SV *prev_sv, SV *next_sv)
954	{	1166	{
		1167	dTHX;
955	struct transfer_args ta;	1168	struct transfer_args ta;
956		1169
957	prepare_transfer (&ta, prev_sv, next_sv);	1170	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
958	TRANSFER (ta);	1171	TRANSFER (ta);
959	}	1172	}
960		1173
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 ********************************************************************/	1174	/** Coro ********************************************************************/
974		1175
975	static void	1176	static void
976	coro_enq (SV *coro_sv)	1177	coro_enq (pTHX_ SV *coro_sv)
977	{	1178	{
978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1179	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
979	}	1180	}
980		1181
981	static SV *	1182	static SV *
982	coro_deq (int min_prio)	1183	coro_deq (pTHX_ int min_prio)
983	{	1184	{
984	int prio = PRIO_MAX - PRIO_MIN;	1185	int prio = PRIO_MAX - PRIO_MIN;
985		1186
986	min_prio -= PRIO_MIN;	1187	min_prio -= PRIO_MIN;
987	if (min_prio < 0)	1188	if (min_prio < 0)
…		…
995	}	1196	}
996		1197
997	static int	1198	static int
998	api_ready (SV *coro_sv)	1199	api_ready (SV *coro_sv)
999	{	1200	{
		1201	dTHX;
1000	struct coro *coro;	1202	struct coro *coro;
1001		1203
1002	if (SvROK (coro_sv))	1204	if (SvROK (coro_sv))
1003	coro_sv = SvRV (coro_sv);	1205	coro_sv = SvRV (coro_sv);
1004		1206
…		…
1008	return 0;	1210	return 0;
1009		1211
1010	coro->flags |= CF_READY;	1212	coro->flags |= CF_READY;
1011		1213
1012	LOCK;	1214	LOCK;
1013	coro_enq (SvREFCNT_inc (coro_sv));	1215	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1014	++coro_nready;	1216	++coro_nready;
1015	UNLOCK;	1217	UNLOCK;
1016		1218
1017	return 1;	1219	return 1;
1018	}	1220	}
1019		1221
1020	static int	1222	static int
1021	api_is_ready (SV *coro_sv)	1223	api_is_ready (SV *coro_sv)
1022	{	1224	{
		1225	dTHX;
1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1226	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1024	}	1227	}
1025		1228
1026	static void	1229	static void
1027	prepare_schedule (struct transfer_args *ta)	1230	prepare_schedule (pTHX_ struct transfer_args *ta)
1028	{	1231	{
1029	SV *prev_sv, *next_sv;	1232	SV *prev_sv, *next_sv;
1030		1233
1031	for (;;)	1234	for (;;)
1032	{	1235	{
1033	LOCK;	1236	LOCK;
1034	next_sv = coro_deq (PRIO_MIN);	1237	next_sv = coro_deq (aTHX_ PRIO_MIN);
1035		1238
1036	/* nothing to schedule: call the idle handler */	1239	/* nothing to schedule: call the idle handler */
1037	if (!next_sv)	1240	if (!next_sv)
1038	{	1241	{
1039	dSP;	1242	dSP;
…		…
1067	break;	1270	break;
1068	}	1271	}
1069		1272
1070	/* free this only after the transfer */	1273	/* free this only after the transfer */
1071	prev_sv = SvRV (coro_current);	1274	prev_sv = SvRV (coro_current);
1072	SvRV_set (coro_current, next_sv);
1073	ta->prev = SvSTATE (prev_sv);	1275	ta->prev = SvSTATE (prev_sv);
1074		1276	TRANSFER_CHECK (*ta);
1075	assert (ta->next->flags & CF_READY);	1277	assert (ta->next->flags & CF_READY);
1076	ta->next->flags &= ~CF_READY;	1278	ta->next->flags &= ~CF_READY;
		1279	SvRV_set (coro_current, next_sv);
1077		1280
1078	LOCK;	1281	LOCK;
1079	free_coro_mortal ();	1282	free_coro_mortal (aTHX);
1080	coro_mortal = prev_sv;	1283	coro_mortal = prev_sv;
1081	UNLOCK;	1284	UNLOCK;
1082	}	1285	}
1083		1286
1084	static void	1287	static void
1085	prepare_cede (struct transfer_args *ta)	1288	prepare_cede (pTHX_ struct transfer_args *ta)
1086	{	1289	{
1087	api_ready (coro_current);	1290	api_ready (coro_current);
1088	prepare_schedule (ta);	1291	prepare_schedule (aTHX_ ta);
1089	}	1292	}
1090		1293
1091	static int	1294	static int
1092	prepare_cede_notself (struct transfer_args *ta)	1295	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1093	{	1296	{
1094	if (coro_nready)	1297	if (coro_nready)
1095	{	1298	{
1096	SV *prev = SvRV (coro_current);	1299	SV *prev = SvRV (coro_current);
1097	prepare_schedule (ta);	1300	prepare_schedule (aTHX_ ta);
1098	api_ready (prev);	1301	api_ready (prev);
1099	return 1;	1302	return 1;
1100	}	1303	}
1101	else	1304	else
1102	return 0;	1305	return 0;
1103	}	1306	}
1104		1307
1105	static void	1308	static void
1106	api_schedule (void)	1309	api_schedule (void)
1107	{	1310	{
		1311	dTHX;
1108	struct transfer_args ta;	1312	struct transfer_args ta;
1109		1313
1110	prepare_schedule (&ta);	1314	prepare_schedule (aTHX_ &ta);
1111	TRANSFER (ta);	1315	TRANSFER (ta);
1112	}	1316	}
1113		1317
1114	static int	1318	static int
1115	api_cede (void)	1319	api_cede (void)
1116	{	1320	{
		1321	dTHX;
1117	struct transfer_args ta;	1322	struct transfer_args ta;
1118		1323
1119	prepare_cede (&ta);	1324	prepare_cede (aTHX_ &ta);
1120		1325
1121	if (ta.prev != ta.next)	1326	if (ta.prev != ta.next)
1122	{	1327	{
1123	TRANSFER (ta);	1328	TRANSFER (ta);
1124	return 1;	1329	return 1;
…		…
1128	}	1333	}
1129		1334
1130	static int	1335	static int
1131	api_cede_notself (void)	1336	api_cede_notself (void)
1132	{	1337	{
		1338	dTHX;
1133	struct transfer_args ta;	1339	struct transfer_args ta;
1134		1340
1135	if (prepare_cede_notself (&ta))	1341	if (prepare_cede_notself (aTHX_ &ta))
1136	{	1342	{
1137	TRANSFER (ta);	1343	TRANSFER (ta);
1138	return 1;	1344	return 1;
1139	}	1345	}
1140	else	1346	else
1141	return 0;	1347	return 0;
1142	}	1348	}
1143		1349
		1350	static void
		1351	api_trace (SV *coro_sv, int flags)
		1352	{
		1353	dTHX;
		1354	struct coro *coro = SvSTATE (coro_sv);
		1355
		1356	if (flags & CC_TRACE)
		1357	{
		1358	if (!coro->cctx)
		1359	coro->cctx = cctx_new ();
		1360	else if (!(coro->cctx->flags & CC_TRACE))
		1361	croak ("cannot enable tracing on coroutine with custom stack");
		1362
		1363	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1364	}
		1365	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1366	{
		1367	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1368
		1369	if (coro->flags & CF_RUNNING)
		1370	PL_runops = RUNOPS_DEFAULT;
		1371	else
		1372	coro->runops = RUNOPS_DEFAULT;
		1373	}
		1374	}
		1375
1144	MODULE = Coro::State PACKAGE = Coro::State	1376	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1145		1377
1146	PROTOTYPES: DISABLE	1378	PROTOTYPES: DISABLE
1147		1379
1148	BOOT:	1380	BOOT:
1149	{	1381	{
1150	#ifdef USE_ITHREADS	1382	#ifdef USE_ITHREADS
1151	MUTEX_INIT (&coro_mutex);	1383	MUTEX_INIT (&coro_mutex);
1152	#endif	1384	#endif
1153	BOOT_PAGESIZE;	1385	BOOT_PAGESIZE;
1154		1386
		1387	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1388
1155	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1389	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1156		1390
		1391	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1392	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1157	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1393	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));	1394	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1162		1395
1163	main_mainstack = PL_mainstack;	1396	main_mainstack = PL_mainstack;
		1397	main_top_env = PL_top_env;
		1398
		1399	while (main_top_env->je_prev)
		1400	main_top_env = main_top_env->je_prev;
1164		1401
1165	coroapi.ver = CORO_API_VERSION;	1402	coroapi.ver = CORO_API_VERSION;
1166	coroapi.transfer = api_transfer;	1403	coroapi.transfer = api_transfer;
1167		1404
1168	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1405	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1175	struct coro *coro;	1412	struct coro *coro;
1176	HV *hv;	1413	HV *hv;
1177	int i;	1414	int i;
1178		1415
1179	Newz (0, coro, 1, struct coro);	1416	Newz (0, coro, 1, struct coro);
1180	coro->args = newAV ();	1417	coro->args = newAV ();
1181	coro->save = CORO_SAVE_ALL;
1182	coro->flags = CF_NEW;	1418	coro->flags = CF_NEW;
1183		1419
		1420	if (coro_first) coro_first->prev = coro;
		1421	coro->next = coro_first;
		1422	coro_first = coro;
		1423
1184	hv = newHV ();	1424	coro->hv = hv = newHV ();
1185	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1425	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));	1426	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1187		1427
1188	for (i = 1; i < items; i++)	1428	for (i = 1; i < items; i++)
1189	av_push (coro->args, newSVsv (ST (i)));	1429	av_push (coro->args, newSVsv (ST (i)));
1190	}	1430	}
1191	OUTPUT:	1431	OUTPUT:
1192	RETVAL	1432	RETVAL
1193		1433
1194	int	1434	# these not obviously related functions are all rolled into the same xs
1195	save (SV *coro, int new_save = -1)	1435	# function to increase chances that they all will call transfer with the same
1196	CODE:	1436	# stack offset
1197	RETVAL = api_save (coro, new_save);
1198	OUTPUT:
1199	RETVAL
1200
1201	void	1437	void
1202	_set_stacklevel (...)	1438	_set_stacklevel (...)
1203	ALIAS:	1439	ALIAS:
1204	Coro::State::transfer = 1	1440	Coro::State::transfer = 1
1205	Coro::schedule = 2	1441	Coro::schedule = 2
…		…
1218		1454
1219	case 1:	1455	case 1:
1220	if (items != 2)	1456	if (items != 2)
1221	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1457	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1222		1458
1223	prepare_transfer (&ta, ST (0), ST (1));	1459	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1224	break;	1460	break;
1225		1461
1226	case 2:	1462	case 2:
1227	prepare_schedule (&ta);	1463	prepare_schedule (aTHX_ &ta);
1228	break;	1464	break;
1229		1465
1230	case 3:	1466	case 3:
1231	prepare_cede (&ta);	1467	prepare_cede (aTHX_ &ta);
1232	break;	1468	break;
1233		1469
1234	case 4:	1470	case 4:
1235	if (!prepare_cede_notself (&ta))	1471	if (!prepare_cede_notself (aTHX_ &ta))
1236	XSRETURN_EMPTY;	1472	XSRETURN_EMPTY;
1237		1473
1238	break;	1474	break;
1239	}	1475	}
1240		1476
…		…
1246	}	1482	}
1247		1483
1248	bool	1484	bool
1249	_destroy (SV *coro_sv)	1485	_destroy (SV *coro_sv)
1250	CODE:	1486	CODE:
1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1487	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1252	OUTPUT:	1488	OUTPUT:
1253	RETVAL	1489	RETVAL
1254		1490
1255	void	1491	void
1256	_exit (code)	1492	_exit (code)
…		…
1258	PROTOTYPE: $	1494	PROTOTYPE: $
1259	CODE:	1495	CODE:
1260	_exit (code);	1496	_exit (code);
1261		1497
1262	int	1498	int
		1499	cctx_stacksize (int new_stacksize = 0)
		1500	CODE:
		1501	RETVAL = coro_stacksize;
		1502	if (new_stacksize)
		1503	coro_stacksize = new_stacksize;
		1504	OUTPUT:
		1505	RETVAL
		1506
		1507	int
1263	cctx_count ()	1508	cctx_count ()
1264	CODE:	1509	CODE:
1265	RETVAL = cctx_count;	1510	RETVAL = cctx_count;
1266	OUTPUT:	1511	OUTPUT:
1267	RETVAL	1512	RETVAL
…		…
1271	CODE:	1516	CODE:
1272	RETVAL = cctx_idle;	1517	RETVAL = cctx_idle;
1273	OUTPUT:	1518	OUTPUT:
1274	RETVAL	1519	RETVAL
1275		1520
		1521	void
		1522	list ()
		1523	PPCODE:
		1524	{
		1525	struct coro *coro;
		1526	for (coro = coro_first; coro; coro = coro->next)
		1527	if (coro->hv)
		1528	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1529	}
		1530
		1531	void
		1532	call (Coro::State coro, SV *coderef)
		1533	ALIAS:
		1534	eval = 1
		1535	CODE:
		1536	{
		1537	if (coro->mainstack)
		1538	{
		1539	struct coro temp;
		1540	Zero (&temp, 1, struct coro);
		1541
		1542	if (!(coro->flags & CF_RUNNING))
		1543	{
		1544	save_perl (aTHX_ &temp);
		1545	load_perl (aTHX_ coro);
		1546	}
		1547
		1548	{
		1549	dSP;
		1550	ENTER;
		1551	SAVETMPS;
		1552	PUSHMARK (SP);
		1553	PUTBACK;
		1554	if (ix)
		1555	eval_sv (coderef, 0);
		1556	else
		1557	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1558	SPAGAIN;
		1559	FREETMPS;
		1560	LEAVE;
		1561	PUTBACK;
		1562	}
		1563
		1564	if (!(coro->flags & CF_RUNNING))
		1565	{
		1566	save_perl (aTHX_ coro);
		1567	load_perl (aTHX_ &temp);
		1568	}
		1569	}
		1570	}
		1571
		1572	SV *
		1573	is_ready (Coro::State coro)
		1574	PROTOTYPE: $
		1575	ALIAS:
		1576	is_ready = CF_READY
		1577	is_running = CF_RUNNING
		1578	is_new = CF_NEW
		1579	is_destroyed = CF_DESTROYED
		1580	CODE:
		1581	RETVAL = boolSV (coro->flags & ix);
		1582	OUTPUT:
		1583	RETVAL
		1584
		1585	void
		1586	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1587
		1588	SV *
		1589	has_stack (Coro::State coro)
		1590	PROTOTYPE: $
		1591	CODE:
		1592	RETVAL = boolSV (!!coro->cctx);
		1593	OUTPUT:
		1594	RETVAL
		1595
		1596	int
		1597	is_traced (Coro::State coro)
		1598	PROTOTYPE: $
		1599	CODE:
		1600	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1601	OUTPUT:
		1602	RETVAL
		1603
		1604	IV
		1605	rss (Coro::State coro)
		1606	PROTOTYPE: $
		1607	ALIAS:
		1608	usecount = 1
		1609	CODE:
		1610	switch (ix)
		1611	{
		1612	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1613	case 1: RETVAL = coro->usecount; break;
		1614	}
		1615	OUTPUT:
		1616	RETVAL
		1617
		1618
1276	MODULE = Coro::State PACKAGE = Coro	1619	MODULE = Coro::State PACKAGE = Coro
1277		1620
1278	BOOT:	1621	BOOT:
1279	{	1622	{
1280	int i;	1623	int i;
		1624
		1625	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1626	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1627	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1628
		1629	coro_current = get_sv ("Coro::current", FALSE);
		1630	SvREADONLY_on (coro_current);
1281		1631
1282	coro_stash = gv_stashpv ("Coro", TRUE);	1632	coro_stash = gv_stashpv ("Coro", TRUE);
1283		1633
1284	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1634	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1285	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1635	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1286	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1636	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1287	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1637	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1288	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1638	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1289	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1639	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1290		1640
1291	coro_current = get_sv ("Coro::current", FALSE);
1292	SvREADONLY_on (coro_current);
1293
1294	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1641	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1295	coro_ready[i] = newAV ();	1642	coro_ready[i] = newAV ();
1296		1643
1297	{	1644	{
1298	SV *sv = perl_get_sv("Coro::API", 1);	1645	SV *sv = perl_get_sv("Coro::API", 1);
1299		1646
1300	coroapi.schedule = api_schedule;	1647	coroapi.schedule = api_schedule;
1301	coroapi.save = api_save;
1302	coroapi.cede = api_cede;	1648	coroapi.cede = api_cede;
1303	coroapi.cede_notself = api_cede_notself;	1649	coroapi.cede_notself = api_cede_notself;
1304	coroapi.ready = api_ready;	1650	coroapi.ready = api_ready;
1305	coroapi.is_ready = api_is_ready;	1651	coroapi.is_ready = api_is_ready;
1306	coroapi.nready = &coro_nready;	1652	coroapi.nready = &coro_nready;
…		…
1347	CODE:	1693	CODE:
1348	RETVAL = boolSV (api_ready (self));	1694	RETVAL = boolSV (api_ready (self));
1349	OUTPUT:	1695	OUTPUT:
1350	RETVAL	1696	RETVAL
1351		1697
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	1698	int
1361	nready (...)	1699	nready (...)
1362	PROTOTYPE:	1700	PROTOTYPE:
1363	CODE:	1701	CODE:
1364	RETVAL = coro_nready;	1702	RETVAL = coro_nready;
1365	OUTPUT:	1703	OUTPUT:
1366	RETVAL	1704	RETVAL
1367		1705
		1706	# for async_pool speedup
		1707	void
		1708	_pool_1 (SV *cb)
		1709	CODE:
		1710	{
		1711	int i, len;
		1712	HV *hv = (HV *)SvRV (coro_current);
		1713	AV *defav = GvAV (PL_defgv);
		1714	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1715	AV *invoke_av;
		1716
		1717	if (!invoke)
		1718	croak ("\3terminate\2\n");
		1719
		1720	hv_store (hv, "desc", sizeof ("desc") - 1,
		1721	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1722
		1723	invoke_av = (AV *)SvRV (invoke);
		1724	len = av_len (invoke_av);
		1725
		1726	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1727
		1728	if (len > 0)
		1729	{
		1730	av_fill (defav, len - 1);
		1731	for (i = 0; i < len; ++i)
		1732	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1733	}
		1734
		1735	SvREFCNT_dec (invoke);
		1736	}
		1737
		1738	void
		1739	_pool_2 (SV *cb)
		1740	CODE:
		1741	{
		1742	struct coro *coro = SvSTATE (coro_current);
		1743
		1744	sv_setsv (cb, &PL_sv_undef);
		1745
		1746	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1747	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1748	croak ("\3terminate\2\n");
		1749
		1750	av_clear (GvAV (PL_defgv));
		1751	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1752	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1753
		1754	coro->prio = 0;
		1755
		1756	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1757	api_trace (coro_current, 0);
		1758
		1759	av_push (av_async_pool, newSVsv (coro_current));
		1760	}
		1761
		1762
1368	MODULE = Coro::State PACKAGE = Coro::AIO	1763	MODULE = Coro::State PACKAGE = Coro::AIO
1369		1764
1370	SV *	1765	SV *
1371	_get_state ()	1766	_get_state ()
1372	CODE:	1767	CODE:

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