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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 1.179 by root, Wed Oct 3 16:03:17 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	GvIOp(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 = GvIOp (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), irsgv, PERL_MAGIC_sv, "/", 1);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	GvIOp(PL_defoutgv) = io;
		612	IoTYPE (io) = IoTYPE_WRONLY;
		613	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		614	IoFLAGS (io) |= IOf_FLUSH;
		615	}
550		616
551	{	617	{
552	dSP;	618	dSP;
553	LOGOP myop;	619	LOGOP myop;
554		620
555	SvREFCNT_dec (GvAV (PL_defgv));
556	GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558	Zero (&myop, 1, LOGOP);	621	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	622	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	623	myop.op_flags = OPf_WANT_VOID;
561		624
562	PUSHMARK (SP);	625	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	626	XPUSHs (av_shift (GvAV (PL_defgv)));
564	PUTBACK;	627	PUTBACK;
565	PL_op = (OP *)&myop;	628	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	629	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	630	SPAGAIN;
568	}	631	}
569		632
570	ENTER; /* necessary e.g. for dounwind */	633	ENTER; /* necessary e.g. for dounwind */
571	}	634	}
572		635
573	static void	636	static void
		637	coro_destroy (pTHX_ struct coro *coro)
		638	{
		639	if (!IN_DESTRUCT)
		640	{
		641	/* restore all saved variables and stuff */
		642	LEAVE_SCOPE (0);
		643	assert (PL_tmps_floor == -1);
		644
		645	/* free all temporaries */
		646	FREETMPS;
		647	assert (PL_tmps_ix == -1);
		648
		649	/* unwind all extra stacks */
		650	POPSTACK_TO (PL_mainstack);
		651
		652	/* unwind main stack */
		653	dounwind (-1);
		654	}
		655
		656	SvREFCNT_dec (GvSV (PL_defgv));
		657	SvREFCNT_dec (GvAV (PL_defgv));
		658	SvREFCNT_dec (GvSV (PL_errgv));
		659	SvREFCNT_dec (GvIOp(PL_defoutgv));
		660	SvREFCNT_dec (PL_rs);
		661	SvREFCNT_dec (GvSV (irsgv));
		662
		663	coro_destroy_stacks (aTHX);
		664	}
		665
		666	static void
574	free_coro_mortal ()	667	free_coro_mortal (pTHX)
575	{	668	{
576	if (coro_mortal)	669	if (coro_mortal)
577	{	670	{
578	SvREFCNT_dec (coro_mortal);	671	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	672	coro_mortal = 0;
580	}	673	}
581	}	674	}
582		675
		676	static int
		677	runops_trace (pTHX)
		678	{
		679	COP *oldcop = 0;
		680	int oldcxix = -2;
		681	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		682	coro_cctx *cctx = coro->cctx;
		683
		684	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		685	{
		686	PERL_ASYNC_CHECK ();
		687
		688	if (cctx->flags & CC_TRACE_ALL)
		689	{
		690	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		691	{
		692	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		693	SV **bot, **top;
		694	AV *av = newAV (); /* return values */
		695	SV **cb;
		696	dSP;
		697
		698	GV *gv = CvGV (cx->blk_sub.cv);
		699	SV *fullname = sv_2mortal (newSV (0));
		700	if (isGV (gv))
		701	gv_efullname3 (fullname, gv, 0);
		702
		703	bot = PL_stack_base + cx->blk_oldsp + 1;
		704	top = cx->blk_gimme == G_ARRAY ? SP + 1
		705	: cx->blk_gimme == G_SCALAR ? bot + 1
		706	: bot;
		707
		708	while (bot < top)
		709	av_push (av, SvREFCNT_inc (*bot++));
		710
		711	PL_runops = RUNOPS_DEFAULT;
		712	ENTER;
		713	SAVETMPS;
		714	EXTEND (SP, 3);
		715	PUSHMARK (SP);
		716	PUSHs (&PL_sv_no);
		717	PUSHs (fullname);
		718	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		719	PUTBACK;
		720	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		721	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		722	SPAGAIN;
		723	FREETMPS;
		724	LEAVE;
		725	PL_runops = runops_trace;
		726	}
		727
		728	if (oldcop != PL_curcop)
		729	{
		730	oldcop = PL_curcop;
		731
		732	if (PL_curcop != &PL_compiling)
		733	{
		734	SV **cb;
		735
		736	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		737	{
		738	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		739
		740	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		741	{
		742	runops_proc_t old_runops = PL_runops;
		743	dSP;
		744	GV *gv = CvGV (cx->blk_sub.cv);
		745	SV *fullname = sv_2mortal (newSV (0));
		746
		747	if (isGV (gv))
		748	gv_efullname3 (fullname, gv, 0);
		749
		750	PL_runops = RUNOPS_DEFAULT;
		751	ENTER;
		752	SAVETMPS;
		753	EXTEND (SP, 3);
		754	PUSHMARK (SP);
		755	PUSHs (&PL_sv_yes);
		756	PUSHs (fullname);
		757	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		758	PUTBACK;
		759	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		760	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		761	SPAGAIN;
		762	FREETMPS;
		763	LEAVE;
		764	PL_runops = runops_trace;
		765	}
		766
		767	oldcxix = cxstack_ix;
		768	}
		769
		770	if (cctx->flags & CC_TRACE_LINE)
		771	{
		772	dSP;
		773
		774	PL_runops = RUNOPS_DEFAULT;
		775	ENTER;
		776	SAVETMPS;
		777	EXTEND (SP, 3);
		778	PL_runops = RUNOPS_DEFAULT;
		779	PUSHMARK (SP);
		780	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		781	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		782	PUTBACK;
		783	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		784	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		785	SPAGAIN;
		786	FREETMPS;
		787	LEAVE;
		788	PL_runops = runops_trace;
		789	}
		790	}
		791	}
		792	}
		793	}
		794
		795	TAINT_NOT;
		796	return 0;
		797	}
		798
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	799	/* inject a fake call to Coro::State::_cctx_init into the execution */
		800	/* _cctx_init should be careful, as it could be called at almost any time */
		801	/* during execution of a perl program */
584	static void NOINLINE	802	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	803	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	804	{
587	dSP;	805	dSP;
588	LOGOP myop;	806	LOGOP myop;
		807
		808	PL_top_env = &PL_start_env;
		809
		810	if (cctx->flags & CC_TRACE)
		811	PL_runops = runops_trace;
589		812
590	Zero (&myop, 1, LOGOP);	813	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	814	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	815	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		816
…		…
599	PL_op = (OP *)&myop;	822	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	823	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	824	SPAGAIN;
602	}	825	}
603		826
		827	/*
		828	* this is a _very_ stripped down perl interpreter ;)
		829	*/
604	static void	830	static void
605	coro_run (void *arg)	831	coro_run (void *arg)
606	{	832	{
		833	dTHX;
		834
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	835	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	836	UNLOCK;
609		837
610	/*	838	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	839	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		840
615	/* inject call to cctx_init */	841	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	842	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		843
618	/* somebody will hit me for both perl_run and PL_restartop */	844	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	845	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	846	perl_run (PL_curinterp);
621		847
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	848	/*
623	abort ();	849	* If perl-run returns we assume exit() was being called or the coro
		850	* fell off the end, which seems to be the only valid (non-bug)
		851	* reason for perl_run to return. We try to exit by jumping to the
		852	* bootstrap-time "top" top_env, as we cannot restore the "main"
		853	* coroutine as Coro has no such concept
		854	*/
		855	PL_top_env = main_top_env;
		856	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	857	}
625		858
626	static coro_cctx *	859	static coro_cctx *
627	cctx_new ()	860	cctx_new ()
628	{	861	{
629	coro_cctx *cctx;	862	coro_cctx *cctx;
		863	void *stack_start;
		864	size_t stack_size;
630		865
631	++cctx_count;	866	++cctx_count;
632		867
633	Newz (0, cctx, 1, coro_cctx);	868	Newz (0, cctx, 1, coro_cctx);
634		869
635	#if HAVE_MMAP	870	#if HAVE_MMAP
636		871
637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	872	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	873	/* 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);	874	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640		875
641	if (cctx->sptr != (void *)-1)	876	if (cctx->sptr != (void *)-1)
642	{	877	{
643	# if CORO_STACKGUARD	878	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	879	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	880	# endif
646	REGISTER_STACK (
647	cctx,
648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,	881	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	882	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	883	cctx->flags |= CC_MAPPED;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	884	}
654	else	885	else
655	#endif	886	#endif
656	{	887	{
657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);	888	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, CORO_STACKSIZE, long);	889	New (0, cctx->sptr, coro_stacksize, long);
659		890
660	if (!cctx->sptr)	891	if (!cctx->sptr)
661	{	892	{
662	perror ("FATAL: unable to allocate stack for coroutine");	893	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	894	_exit (EXIT_FAILURE);
664	}	895	}
665		896
666	REGISTER_STACK (	897	stack_start = cctx->sptr;
667	cctx,	898	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	899	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		900
		901	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	902	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		903
675	return cctx;	904	return cctx;
676	}	905	}
677		906
678	static void	907	static void
…		…
686	#if CORO_USE_VALGRIND	915	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	916	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	917	#endif
689		918
690	#if HAVE_MMAP	919	#if HAVE_MMAP
691	if (cctx->ssize > 0)	920	if (cctx->flags & CC_MAPPED)
692	munmap (cctx->sptr, cctx->ssize);	921	munmap (cctx->sptr, cctx->ssize);
693	else	922	else
694	#endif	923	#endif
695	Safefree (cctx->sptr);	924	Safefree (cctx->sptr);
696		925
697	Safefree (cctx);	926	Safefree (cctx);
698	}	927	}
699		928
700	static coro_cctx *	929	static coro_cctx *
701	cctx_get ()	930	cctx_get (pTHX)
702	{	931	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	932	while (cctx_first)
706	{	933	{
707	cctx = cctx_first;	934	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	935	cctx_first = cctx->next;
709	--cctx_idle;	936	--cctx_idle;
710	}	937
711	else	938	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
712	{	939	return cctx;
713	cctx = cctx_new ();	940
714	PL_op = PL_op->op_next;	941	cctx_destroy (cctx);
715	}	942	}
716		943
717	return cctx;	944	return cctx_new ();
718	}	945	}
719		946
720	static void	947	static void
721	cctx_put (coro_cctx *cctx)	948	cctx_put (coro_cctx *cctx)
722	{	949	{
…		…
725	{	952	{
726	coro_cctx *first = cctx_first;	953	coro_cctx *first = cctx_first;
727	cctx_first = first->next;	954	cctx_first = first->next;
728	--cctx_idle;	955	--cctx_idle;
729		956
730	assert (!first->inuse);
731	cctx_destroy (first);	957	cctx_destroy (first);
732	}	958	}
733		959
734	++cctx_idle;	960	++cctx_idle;
735	cctx->next = cctx_first;	961	cctx->next = cctx_first;
736	cctx_first = cctx;	962	cctx_first = cctx;
737	}	963	}
738		964
739	/** coroutine switching *****************************************************/	965	/** coroutine switching *****************************************************/
740		966
741	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	967	static void NOINLINE
		968	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		969	{
		970	if (prev != next)
		971	{
		972	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		973	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		974
		975	if (next->flags & CF_RUNNING)
		976	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		977
		978	if (next->flags & CF_DESTROYED)
		979	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		980
		981	if (PL_lex_state != LEX_NOTPARSING)
		982	croak ("Coro::State::transfer called while parsing, but this is not supported");
		983	}
		984	}
		985
		986	/* always use the TRANSFER macro */
		987	static void NOINLINE
743	transfer (struct coro *prev, struct coro *next)	988	transfer (pTHX_ struct coro *prev, struct coro *next)
744	{	989	{
745	dSTACKLEVEL;	990	dSTACKLEVEL;
746		991
747	/* sometimes transfer is only called to set idle_sp */	992	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	993	if (!next)
…		…
756		1001
757	if (prev->flags & CF_NEW)	1002	if (prev->flags & CF_NEW)
758	{	1003	{
759	/* create a new empty context */	1004	/* create a new empty context */
760	Newz (0, prev->cctx, 1, coro_cctx);	1005	Newz (0, prev->cctx, 1, coro_cctx);
761	prev->cctx->inuse = 1;
762	prev->flags &= ~CF_NEW;	1006	prev->flags &= ~CF_NEW;
763	prev->flags |= CF_RUNNING;	1007	prev->flags |= CF_RUNNING;
764	}	1008	}
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		1009
776	prev->flags &= ~CF_RUNNING;	1010	prev->flags &= ~CF_RUNNING;
777	next->flags |= CF_RUNNING;	1011	next->flags |= CF_RUNNING;
778		1012
779	LOCK;	1013	LOCK;
…		…
781	if (next->flags & CF_NEW)	1015	if (next->flags & CF_NEW)
782	{	1016	{
783	/* need to start coroutine */	1017	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	1018	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	1019	/* first get rid of the old state */
786	save_perl (prev);	1020	save_perl (aTHX_ prev);
787	/* setup coroutine call */	1021	/* setup coroutine call */
788	setup_coro (next);	1022	coro_setup (aTHX_ next);
789	/* need a new stack */
790	assert (!next->cctx);
791	}	1023	}
792	else	1024	else
793	{	1025	{
794	/* coroutine already started */	1026	/* coroutine already started */
795	save_perl (prev);	1027	save_perl (aTHX_ prev);
796	load_perl (next);	1028	load_perl (aTHX_ next);
797	}	1029	}
798		1030
799	prev__cctx = prev->cctx;	1031	prev__cctx = prev->cctx;
800		1032
801	/* possibly "free" the cctx */	1033	/* possibly "free" the cctx */
802	if (prev__cctx->idle_sp == STACKLEVEL)	1034	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
803	{	1035	{
804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1036	/* 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));	1037	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806		1038
807	prev->cctx = 0;	1039	prev->cctx = 0;
808		1040
809	cctx_put (prev__cctx);	1041	cctx_put (prev__cctx);
810	prev__cctx->inuse = 0;
811	}	1042	}
812		1043
		1044	++next->usecount;
		1045
813	if (!next->cctx)	1046	if (!next->cctx)
814	{
815	next->cctx = cctx_get ();	1047	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;
818	}
819		1048
820	if (prev__cctx != next->cctx)	1049	if (prev__cctx != next->cctx)
821	{	1050	{
822	prev__cctx->top_env = PL_top_env;	1051	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	1052	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1053	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	1054	}
826		1055
827	free_coro_mortal ();	1056	free_coro_mortal (aTHX);
828	UNLOCK;	1057	UNLOCK;
829	}	1058	}
830	}	1059	}
831		1060
832	struct transfer_args	1061	struct transfer_args
833	{	1062	{
834	struct coro *prev, *next;	1063	struct coro *prev, *next;
835	};	1064	};
836		1065
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1066	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1067	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838		1068
839	/** high level stuff ********************************************************/	1069	/** high level stuff ********************************************************/
840		1070
841	static int	1071	static int
842	coro_state_destroy (struct coro *coro)	1072	coro_state_destroy (pTHX_ struct coro *coro)
843	{	1073	{
844	if (coro->flags & CF_DESTROYED)	1074	if (coro->flags & CF_DESTROYED)
845	return 0;	1075	return 0;
846		1076
847	coro->flags |= CF_DESTROYED;	1077	coro->flags |= CF_DESTROYED;
…		…
859		1089
860	if (coro->mainstack && coro->mainstack != main_mainstack)	1090	if (coro->mainstack && coro->mainstack != main_mainstack)
861	{	1091	{
862	struct coro temp;	1092	struct coro temp;
863		1093
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)	1094	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	1095	croak ("FATAL: tried to destroy currently running coroutine");
871		1096
872	save_perl (&temp);	1097	save_perl (aTHX_ &temp);
873	load_perl (coro);	1098	load_perl (aTHX_ coro);
874		1099
875	coro_destroy_stacks ();	1100	coro_destroy (aTHX_ coro);
876		1101
877	load_perl (&temp); /* this will get rid of defsv etc.. */	1102	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		1103
879	coro->mainstack = 0;	1104	coro->mainstack = 0;
880	}	1105	}
881		1106
882	cctx_destroy (coro->cctx);	1107	cctx_destroy (coro->cctx);
883	SvREFCNT_dec (coro->args);	1108	SvREFCNT_dec (coro->args);
884		1109
		1110	if (coro->next) coro->next->prev = coro->prev;
		1111	if (coro->prev) coro->prev->next = coro->next;
		1112	if (coro == coro_first) coro_first = coro->next;
		1113
885	return 1;	1114	return 1;
886	}	1115	}
887		1116
888	static int	1117	static int
889	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1118	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890	{	1119	{
891	struct coro *coro = (struct coro *)mg->mg_ptr;	1120	struct coro *coro = (struct coro *)mg->mg_ptr;
892	mg->mg_ptr = 0;	1121	mg->mg_ptr = 0;
893		1122
		1123	coro->hv = 0;
		1124
894	if (--coro->refcnt < 0)	1125	if (--coro->refcnt < 0)
895	{	1126	{
896	coro_state_destroy (coro);	1127	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	1128	Safefree (coro);
898	}	1129	}
899		1130
900	return 0;	1131	return 0;
901	}	1132	}
…		…
919	#else	1150	#else
920	# define MGf_DUP 0	1151	# define MGf_DUP 0
921	#endif	1152	#endif
922	};	1153	};
923		1154
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	1155	static void
946	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1156	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947	{	1157	{
948	ta->prev = SvSTATE (prev_sv);	1158	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	1159	ta->next = SvSTATE (next_sv);
		1160	TRANSFER_CHECK (*ta);
950	}	1161	}
951		1162
952	static void	1163	static void
953	api_transfer (SV *prev_sv, SV *next_sv)	1164	api_transfer (SV *prev_sv, SV *next_sv)
954	{	1165	{
		1166	dTHX;
955	struct transfer_args ta;	1167	struct transfer_args ta;
956		1168
957	prepare_transfer (&ta, prev_sv, next_sv);	1169	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
958	TRANSFER (ta);	1170	TRANSFER (ta);
959	}	1171	}
960		1172
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 ********************************************************************/	1173	/** Coro ********************************************************************/
974		1174
975	static void	1175	static void
976	coro_enq (SV *coro_sv)	1176	coro_enq (pTHX_ SV *coro_sv)
977	{	1177	{
978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1178	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
979	}	1179	}
980		1180
981	static SV *	1181	static SV *
982	coro_deq (int min_prio)	1182	coro_deq (pTHX_ int min_prio)
983	{	1183	{
984	int prio = PRIO_MAX - PRIO_MIN;	1184	int prio = PRIO_MAX - PRIO_MIN;
985		1185
986	min_prio -= PRIO_MIN;	1186	min_prio -= PRIO_MIN;
987	if (min_prio < 0)	1187	if (min_prio < 0)
…		…
995	}	1195	}
996		1196
997	static int	1197	static int
998	api_ready (SV *coro_sv)	1198	api_ready (SV *coro_sv)
999	{	1199	{
		1200	dTHX;
1000	struct coro *coro;	1201	struct coro *coro;
1001		1202
1002	if (SvROK (coro_sv))	1203	if (SvROK (coro_sv))
1003	coro_sv = SvRV (coro_sv);	1204	coro_sv = SvRV (coro_sv);
1004		1205
…		…
1008	return 0;	1209	return 0;
1009		1210
1010	coro->flags |= CF_READY;	1211	coro->flags |= CF_READY;
1011		1212
1012	LOCK;	1213	LOCK;
1013	coro_enq (SvREFCNT_inc (coro_sv));	1214	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1014	++coro_nready;	1215	++coro_nready;
1015	UNLOCK;	1216	UNLOCK;
1016		1217
1017	return 1;	1218	return 1;
1018	}	1219	}
1019		1220
1020	static int	1221	static int
1021	api_is_ready (SV *coro_sv)	1222	api_is_ready (SV *coro_sv)
1022	{	1223	{
		1224	dTHX;
1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1225	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1024	}	1226	}
1025		1227
1026	static void	1228	static void
1027	prepare_schedule (struct transfer_args *ta)	1229	prepare_schedule (pTHX_ struct transfer_args *ta)
1028	{	1230	{
1029	SV *prev_sv, *next_sv;	1231	SV *prev_sv, *next_sv;
1030		1232
1031	for (;;)	1233	for (;;)
1032	{	1234	{
1033	LOCK;	1235	LOCK;
1034	next_sv = coro_deq (PRIO_MIN);	1236	next_sv = coro_deq (aTHX_ PRIO_MIN);
1035		1237
1036	/* nothing to schedule: call the idle handler */	1238	/* nothing to schedule: call the idle handler */
1037	if (!next_sv)	1239	if (!next_sv)
1038	{	1240	{
1039	dSP;	1241	dSP;
…		…
1067	break;	1269	break;
1068	}	1270	}
1069		1271
1070	/* free this only after the transfer */	1272	/* free this only after the transfer */
1071	prev_sv = SvRV (coro_current);	1273	prev_sv = SvRV (coro_current);
1072	SvRV_set (coro_current, next_sv);
1073	ta->prev = SvSTATE (prev_sv);	1274	ta->prev = SvSTATE (prev_sv);
1074		1275	TRANSFER_CHECK (*ta);
1075	assert (ta->next->flags & CF_READY);	1276	assert (ta->next->flags & CF_READY);
1076	ta->next->flags &= ~CF_READY;	1277	ta->next->flags &= ~CF_READY;
		1278	SvRV_set (coro_current, next_sv);
1077		1279
1078	LOCK;	1280	LOCK;
1079	free_coro_mortal ();	1281	free_coro_mortal (aTHX);
1080	coro_mortal = prev_sv;	1282	coro_mortal = prev_sv;
1081	UNLOCK;	1283	UNLOCK;
1082	}	1284	}
1083		1285
1084	static void	1286	static void
1085	prepare_cede (struct transfer_args *ta)	1287	prepare_cede (pTHX_ struct transfer_args *ta)
1086	{	1288	{
1087	api_ready (coro_current);	1289	api_ready (coro_current);
1088	prepare_schedule (ta);	1290	prepare_schedule (aTHX_ ta);
1089	}	1291	}
1090		1292
1091	static int	1293	static int
1092	prepare_cede_notself (struct transfer_args *ta)	1294	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1093	{	1295	{
1094	if (coro_nready)	1296	if (coro_nready)
1095	{	1297	{
1096	SV *prev = SvRV (coro_current);	1298	SV *prev = SvRV (coro_current);
1097	prepare_schedule (ta);	1299	prepare_schedule (aTHX_ ta);
1098	api_ready (prev);	1300	api_ready (prev);
1099	return 1;	1301	return 1;
1100	}	1302	}
1101	else	1303	else
1102	return 0;	1304	return 0;
1103	}	1305	}
1104		1306
1105	static void	1307	static void
1106	api_schedule (void)	1308	api_schedule (void)
1107	{	1309	{
		1310	dTHX;
1108	struct transfer_args ta;	1311	struct transfer_args ta;
1109		1312
1110	prepare_schedule (&ta);	1313	prepare_schedule (aTHX_ &ta);
1111	TRANSFER (ta);	1314	TRANSFER (ta);
1112	}	1315	}
1113		1316
1114	static int	1317	static int
1115	api_cede (void)	1318	api_cede (void)
1116	{	1319	{
		1320	dTHX;
1117	struct transfer_args ta;	1321	struct transfer_args ta;
1118		1322
1119	prepare_cede (&ta);	1323	prepare_cede (aTHX_ &ta);
1120		1324
1121	if (ta.prev != ta.next)	1325	if (ta.prev != ta.next)
1122	{	1326	{
1123	TRANSFER (ta);	1327	TRANSFER (ta);
1124	return 1;	1328	return 1;
…		…
1128	}	1332	}
1129		1333
1130	static int	1334	static int
1131	api_cede_notself (void)	1335	api_cede_notself (void)
1132	{	1336	{
		1337	dTHX;
1133	struct transfer_args ta;	1338	struct transfer_args ta;
1134		1339
1135	if (prepare_cede_notself (&ta))	1340	if (prepare_cede_notself (aTHX_ &ta))
1136	{	1341	{
1137	TRANSFER (ta);	1342	TRANSFER (ta);
1138	return 1;	1343	return 1;
1139	}	1344	}
1140	else	1345	else
1141	return 0;	1346	return 0;
1142	}	1347	}
1143		1348
		1349	static void
		1350	api_trace (SV *coro_sv, int flags)
		1351	{
		1352	dTHX;
		1353	struct coro *coro = SvSTATE (coro_sv);
		1354
		1355	if (flags & CC_TRACE)
		1356	{
		1357	if (!coro->cctx)
		1358	coro->cctx = cctx_new ();
		1359	else if (!(coro->cctx->flags & CC_TRACE))
		1360	croak ("cannot enable tracing on coroutine with custom stack");
		1361
		1362	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1363	}
		1364	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1365	{
		1366	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1367
		1368	if (coro->flags & CF_RUNNING)
		1369	PL_runops = RUNOPS_DEFAULT;
		1370	else
		1371	coro->runops = RUNOPS_DEFAULT;
		1372	}
		1373	}
		1374
1144	MODULE = Coro::State PACKAGE = Coro::State	1375	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1145		1376
1146	PROTOTYPES: DISABLE	1377	PROTOTYPES: DISABLE
1147		1378
1148	BOOT:	1379	BOOT:
1149	{	1380	{
1150	#ifdef USE_ITHREADS	1381	#ifdef USE_ITHREADS
1151	MUTEX_INIT (&coro_mutex);	1382	MUTEX_INIT (&coro_mutex);
1152	#endif	1383	#endif
1153	BOOT_PAGESIZE;	1384	BOOT_PAGESIZE;
1154		1385
		1386	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1387
1155	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1388	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1156		1389
		1390	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1391	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1157	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1392	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));	1393	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1162		1394
1163	main_mainstack = PL_mainstack;	1395	main_mainstack = PL_mainstack;
		1396	main_top_env = PL_top_env;
		1397
		1398	while (main_top_env->je_prev)
		1399	main_top_env = main_top_env->je_prev;
1164		1400
1165	coroapi.ver = CORO_API_VERSION;	1401	coroapi.ver = CORO_API_VERSION;
1166	coroapi.transfer = api_transfer;	1402	coroapi.transfer = api_transfer;
1167		1403
1168	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1404	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1175	struct coro *coro;	1411	struct coro *coro;
1176	HV *hv;	1412	HV *hv;
1177	int i;	1413	int i;
1178		1414
1179	Newz (0, coro, 1, struct coro);	1415	Newz (0, coro, 1, struct coro);
1180	coro->args = newAV ();	1416	coro->args = newAV ();
1181	coro->save = CORO_SAVE_ALL;
1182	coro->flags = CF_NEW;	1417	coro->flags = CF_NEW;
1183		1418
		1419	if (coro_first) coro_first->prev = coro;
		1420	coro->next = coro_first;
		1421	coro_first = coro;
		1422
1184	hv = newHV ();	1423	coro->hv = hv = newHV ();
1185	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1424	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));	1425	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1187		1426
1188	for (i = 1; i < items; i++)	1427	for (i = 1; i < items; i++)
1189	av_push (coro->args, newSVsv (ST (i)));	1428	av_push (coro->args, newSVsv (ST (i)));
1190	}	1429	}
1191	OUTPUT:	1430	OUTPUT:
1192	RETVAL	1431	RETVAL
1193		1432
1194	int	1433	# these not obviously related functions are all rolled into the same xs
1195	save (SV *coro, int new_save = -1)	1434	# function to increase chances that they all will call transfer with the same
1196	CODE:	1435	# stack offset
1197	RETVAL = api_save (coro, new_save);
1198	OUTPUT:
1199	RETVAL
1200
1201	void	1436	void
1202	_set_stacklevel (...)	1437	_set_stacklevel (...)
1203	ALIAS:	1438	ALIAS:
1204	Coro::State::transfer = 1	1439	Coro::State::transfer = 1
1205	Coro::schedule = 2	1440	Coro::schedule = 2
…		…
1218		1453
1219	case 1:	1454	case 1:
1220	if (items != 2)	1455	if (items != 2)
1221	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1456	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1222		1457
1223	prepare_transfer (&ta, ST (0), ST (1));	1458	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1224	break;	1459	break;
1225		1460
1226	case 2:	1461	case 2:
1227	prepare_schedule (&ta);	1462	prepare_schedule (aTHX_ &ta);
1228	break;	1463	break;
1229		1464
1230	case 3:	1465	case 3:
1231	prepare_cede (&ta);	1466	prepare_cede (aTHX_ &ta);
1232	break;	1467	break;
1233		1468
1234	case 4:	1469	case 4:
1235	if (!prepare_cede_notself (&ta))	1470	if (!prepare_cede_notself (aTHX_ &ta))
1236	XSRETURN_EMPTY;	1471	XSRETURN_EMPTY;
1237		1472
1238	break;	1473	break;
1239	}	1474	}
1240		1475
…		…
1246	}	1481	}
1247		1482
1248	bool	1483	bool
1249	_destroy (SV *coro_sv)	1484	_destroy (SV *coro_sv)
1250	CODE:	1485	CODE:
1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1486	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1252	OUTPUT:	1487	OUTPUT:
1253	RETVAL	1488	RETVAL
1254		1489
1255	void	1490	void
1256	_exit (code)	1491	_exit (code)
…		…
1258	PROTOTYPE: $	1493	PROTOTYPE: $
1259	CODE:	1494	CODE:
1260	_exit (code);	1495	_exit (code);
1261		1496
1262	int	1497	int
		1498	cctx_stacksize (int new_stacksize = 0)
		1499	CODE:
		1500	RETVAL = coro_stacksize;
		1501	if (new_stacksize)
		1502	coro_stacksize = new_stacksize;
		1503	OUTPUT:
		1504	RETVAL
		1505
		1506	int
1263	cctx_count ()	1507	cctx_count ()
1264	CODE:	1508	CODE:
1265	RETVAL = cctx_count;	1509	RETVAL = cctx_count;
1266	OUTPUT:	1510	OUTPUT:
1267	RETVAL	1511	RETVAL
…		…
1271	CODE:	1515	CODE:
1272	RETVAL = cctx_idle;	1516	RETVAL = cctx_idle;
1273	OUTPUT:	1517	OUTPUT:
1274	RETVAL	1518	RETVAL
1275		1519
		1520	void
		1521	list ()
		1522	PPCODE:
		1523	{
		1524	struct coro *coro;
		1525	for (coro = coro_first; coro; coro = coro->next)
		1526	if (coro->hv)
		1527	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1528	}
		1529
		1530	void
		1531	call (Coro::State coro, SV *coderef)
		1532	ALIAS:
		1533	eval = 1
		1534	CODE:
		1535	{
		1536	if (coro->mainstack)
		1537	{
		1538	struct coro temp;
		1539	Zero (&temp, 1, struct coro);
		1540
		1541	if (!(coro->flags & CF_RUNNING))
		1542	{
		1543	save_perl (aTHX_ &temp);
		1544	load_perl (aTHX_ coro);
		1545	}
		1546
		1547	{
		1548	dSP;
		1549	ENTER;
		1550	SAVETMPS;
		1551	PUSHMARK (SP);
		1552	PUTBACK;
		1553	if (ix)
		1554	eval_sv (coderef, 0);
		1555	else
		1556	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1557	SPAGAIN;
		1558	FREETMPS;
		1559	LEAVE;
		1560	PUTBACK;
		1561	}
		1562
		1563	if (!(coro->flags & CF_RUNNING))
		1564	{
		1565	save_perl (aTHX_ coro);
		1566	load_perl (aTHX_ &temp);
		1567	}
		1568	}
		1569	}
		1570
		1571	SV *
		1572	is_ready (Coro::State coro)
		1573	PROTOTYPE: $
		1574	ALIAS:
		1575	is_ready = CF_READY
		1576	is_running = CF_RUNNING
		1577	is_new = CF_NEW
		1578	is_destroyed = CF_DESTROYED
		1579	CODE:
		1580	RETVAL = boolSV (coro->flags & ix);
		1581	OUTPUT:
		1582	RETVAL
		1583
		1584	void
		1585	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1586
		1587	SV *
		1588	has_stack (Coro::State coro)
		1589	PROTOTYPE: $
		1590	CODE:
		1591	RETVAL = boolSV (!!coro->cctx);
		1592	OUTPUT:
		1593	RETVAL
		1594
		1595	int
		1596	is_traced (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	IV
		1604	rss (Coro::State coro)
		1605	PROTOTYPE: $
		1606	ALIAS:
		1607	usecount = 1
		1608	CODE:
		1609	switch (ix)
		1610	{
		1611	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1612	case 1: RETVAL = coro->usecount; break;
		1613	}
		1614	OUTPUT:
		1615	RETVAL
		1616
		1617
1276	MODULE = Coro::State PACKAGE = Coro	1618	MODULE = Coro::State PACKAGE = Coro
1277		1619
1278	BOOT:	1620	BOOT:
1279	{	1621	{
1280	int i;	1622	int i;
		1623
		1624	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1625	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1626	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1627
		1628	coro_current = get_sv ("Coro::current", FALSE);
		1629	SvREADONLY_on (coro_current);
1281		1630
1282	coro_stash = gv_stashpv ("Coro", TRUE);	1631	coro_stash = gv_stashpv ("Coro", TRUE);
1283		1632
1284	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1633	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1285	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1634	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1286	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1635	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1287	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1636	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1288	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1637	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1289	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1638	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1290		1639
1291	coro_current = get_sv ("Coro::current", FALSE);
1292	SvREADONLY_on (coro_current);
1293
1294	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1640	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1295	coro_ready[i] = newAV ();	1641	coro_ready[i] = newAV ();
1296		1642
1297	{	1643	{
1298	SV *sv = perl_get_sv("Coro::API", 1);	1644	SV *sv = perl_get_sv("Coro::API", 1);
1299		1645
1300	coroapi.schedule = api_schedule;	1646	coroapi.schedule = api_schedule;
1301	coroapi.save = api_save;
1302	coroapi.cede = api_cede;	1647	coroapi.cede = api_cede;
1303	coroapi.cede_notself = api_cede_notself;	1648	coroapi.cede_notself = api_cede_notself;
1304	coroapi.ready = api_ready;	1649	coroapi.ready = api_ready;
1305	coroapi.is_ready = api_is_ready;	1650	coroapi.is_ready = api_is_ready;
1306	coroapi.nready = &coro_nready;	1651	coroapi.nready = &coro_nready;
…		…
1347	CODE:	1692	CODE:
1348	RETVAL = boolSV (api_ready (self));	1693	RETVAL = boolSV (api_ready (self));
1349	OUTPUT:	1694	OUTPUT:
1350	RETVAL	1695	RETVAL
1351		1696
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	1697	int
1361	nready (...)	1698	nready (...)
1362	PROTOTYPE:	1699	PROTOTYPE:
1363	CODE:	1700	CODE:
1364	RETVAL = coro_nready;	1701	RETVAL = coro_nready;
1365	OUTPUT:	1702	OUTPUT:
1366	RETVAL	1703	RETVAL
1367		1704
		1705	# for async_pool speedup
		1706	void
		1707	_pool_1 (SV *cb)
		1708	CODE:
		1709	{
		1710	int i, len;
		1711	HV *hv = (HV *)SvRV (coro_current);
		1712	AV *defav = GvAV (PL_defgv);
		1713	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1714	AV *invoke_av;
		1715
		1716	if (!invoke)
		1717	croak ("\3terminate\2\n");
		1718
		1719	hv_store (hv, "desc", sizeof ("desc") - 1,
		1720	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1721
		1722	invoke_av = (AV *)SvRV (invoke);
		1723	len = av_len (invoke_av);
		1724
		1725	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1726
		1727	if (len > 0)
		1728	{
		1729	av_fill (defav, len - 1);
		1730	for (i = 0; i < len; ++i)
		1731	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1732	}
		1733
		1734	SvREFCNT_dec (invoke);
		1735	}
		1736
		1737	void
		1738	_pool_2 (SV *cb)
		1739	CODE:
		1740	{
		1741	struct coro *coro = SvSTATE (coro_current);
		1742
		1743	sv_setsv (cb, &PL_sv_undef);
		1744
		1745	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1746	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1747	croak ("\3terminate\2\n");
		1748
		1749	av_clear (GvAV (PL_defgv));
		1750	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1751	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1752
		1753	coro->prio = 0;
		1754
		1755	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1756	api_trace (coro_current, 0);
		1757
		1758	av_push (av_async_pool, newSVsv (coro_current));
		1759	}
		1760
		1761
1368	MODULE = Coro::State PACKAGE = Coro::AIO	1762	MODULE = Coro::State PACKAGE = Coro::AIO
1369		1763
1370	SV *	1764	SV *
1371	_get_state ()	1765	_get_state ()
1372	CODE:	1766	CODE:

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