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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.142 by root, Tue Feb 13 19:21:29 2007 UTC vs.
Revision 1.193 by root, Fri Oct 5 23:38:40 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
…		…
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
39	#else	41	#else
40	# define REGISTER_STACK(cctx,start,end)	42	# define REGISTER_STACK(cctx,start,end)
41	#endif	43	#endif
…		…
73	/* 5.8.7 */	75	/* 5.8.7 */
74	#ifndef SvRV_set	76	#ifndef SvRV_set
75	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
76	#endif	78	#endif
77		79
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
		87
78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
79	# undef STACKGUARD	89	# undef CORO_STACKGUARD
80	#endif	90	#endif
81		91
82	#ifndef STACKGUARD	92	#ifndef CORO_STACKGUARD
83	# define STACKGUARD 0	93	# define CORO_STACKGUARD 0
84	#endif	94	#endif
85		95
86	/* prefer perl internal functions over our own? */	96	/* prefer perl internal functions over our own? */
87	#ifndef PREFER_PERL_FUNCTIONS	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define PREFER_PERL_FUNCTIONS 0	98	# define CORO_PREFER_PERL_FUNCTIONS 0
89	#endif	99	#endif
90		100
91	/* The next macro should declare a variable stacklevel that contains and approximation	101	/* 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	102	* portable way as possible. */
93	* and should be unique. */
94	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
95	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
96		105
97	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
98		107
99	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
…		…
124	I32 laststype;	133	I32 laststype;
125	int laststatval;	134	int laststatval;
126	Stat_t statcache;	135	Stat_t statcache;
127	};	136	};
128		137
		138	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	139	static struct CoroAPI coroapi;
130	static AV *main_mainstack; /* used to differentiate between $main and others */	140	static AV *main_mainstack; /* used to differentiate between $main and others */
		141	static JMPENV *main_top_env;
131	static HV *coro_state_stash, *coro_stash;	142	static HV *coro_state_stash, *coro_stash;
132	static SV *coro_mortal; /* will be freed after next transfer */	143	static SV *coro_mortal; /* will be freed after next transfer */
133		144
		145	static GV *irsgv; /* $/ */
		146	static GV *stdoutgv; /* *STDOUT */
		147
		148	/* async_pool helper stuff */
		149	static SV *sv_pool_rss;
		150	static SV *sv_pool_size;
		151	static AV *av_async_pool;
		152
134	static struct coro_cctx *cctx_first;	153	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	154	static int cctx_count, cctx_idle;
		155
		156	enum {
		157	CC_MAPPED = 0x01,
		158	CC_NOREUSE = 0x02, /* throw this away after tracing */
		159	CC_TRACE = 0x04,
		160	CC_TRACE_SUB = 0x08, /* trace sub calls */
		161	CC_TRACE_LINE = 0x10, /* trace each statement */
		162	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		163	};
136		164
137	/* this is a structure representing a c-level coroutine */	165	/* this is a structure representing a c-level coroutine */
138	typedef struct coro_cctx {	166	typedef struct coro_cctx {
139	struct coro_cctx *next;	167	struct coro_cctx *next;
140		168
141	/* the stack */	169	/* the stack */
142	void *sptr;	170	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	171	size_t ssize;
144		172
145	/* cpu state */	173	/* cpu state */
146	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	174	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 */	175	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	176	JMPENV *top_env;
149	coro_context cctx;	177	coro_context cctx;
150		178
151	int inuse;
152
153	#if USE_VALGRIND	179	#if CORO_USE_VALGRIND
154	int valgrind_id;	180	int valgrind_id;
155	#endif	181	#endif
		182	unsigned char flags;
156	} coro_cctx;	183	} coro_cctx;
157		184
158	enum {	185	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	186	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	187	CF_READY = 0x0002, /* coroutine is ready */
…		…
168	coro_cctx *cctx;	195	coro_cctx *cctx;
169		196
170	/* data associated with this coroutine (initial args) */	197	/* data associated with this coroutine (initial args) */
171	AV *args;	198	AV *args;
172	int refcnt;	199	int refcnt;
173	int save; /* CORO_SAVE flags */
174	int flags; /* CF_ flags */	200	int flags; /* CF_ flags */
175		201
176	/* optionally saved, might be zero */	202	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	203	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	204	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	205	SV *errsv; /* $@ */
		206	SV *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	207	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	208	SV *irssv_sv; /* real $/ cache */
182		209
183	#define VAR(name,type) type name;	210	#define VAR(name,type) type name;
184	# include "state.h"	211	# include "state.h"
185	#undef VAR	212	#undef VAR
186		213
		214	/* statistics */
		215	int usecount; /* number of transfers to this coro */
		216
187	/* coro process data */	217	/* coro process data */
188	int prio;	218	int prio;
		219	//SV *throw;
		220
		221	/* async_pool */
		222	SV *saved_deffh;
		223
		224	/* linked list */
		225	struct coro *next, *prev;
		226	HV *hv; /* the perl hash associated with this coro, if any */
189	};	227	};
190		228
191	typedef struct coro *Coro__State;	229	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	230	typedef struct coro *Coro__State_or_hashref;
193		231
…		…
202		240
203	/* for Coro.pm */	241	/* for Coro.pm */
204	static SV *coro_current;	242	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	243	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	244	static int coro_nready;
		245	static struct coro *coro_first;
207		246
208	/** lowlevel stuff **********************************************************/	247	/** lowlevel stuff **********************************************************/
209		248
210	static AV *	249	static AV *
211	coro_clone_padlist (CV *cv)	250	coro_clone_padlist (pTHX_ CV *cv)
212	{	251	{
213	AV *padlist = CvPADLIST (cv);	252	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	253	AV *newpadlist, *newpad;
215		254
216	newpadlist = newAV ();	255	newpadlist = newAV ();
…		…
228		267
229	return newpadlist;	268	return newpadlist;
230	}	269	}
231		270
232	static void	271	static void
233	free_padlist (AV *padlist)	272	free_padlist (pTHX_ AV *padlist)
234	{	273	{
235	/* may be during global destruction */	274	/* may be during global destruction */
236	if (SvREFCNT (padlist))	275	if (SvREFCNT (padlist))
237	{	276	{
238	I32 i = AvFILLp (padlist);	277	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	298	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	299	AV *av = (AV *)mg->mg_obj;
261		300
262	/* casting is fun. */	301	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	303	free_padlist (aTHX_ padlist);
265		304
266	SvREFCNT_dec (av);	305	SvREFCNT_dec (av);
267		306
268	return 0;	307	return 0;
269	}	308	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	317	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	319	: 0
281		320
		321	static struct coro *
		322	SvSTATE_ (pTHX_ SV *coro)
		323	{
		324	HV *stash;
		325	MAGIC *mg;
		326
		327	if (SvROK (coro))
		328	coro = SvRV (coro);
		329
		330	if (SvTYPE (coro) != SVt_PVHV)
		331	croak ("Coro::State object required");
		332
		333	stash = SvSTASH (coro);
		334	if (stash != coro_stash && stash != coro_state_stash)
		335	{
		336	/* very slow, but rare, check */
		337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		338	croak ("Coro::State object required");
		339	}
		340
		341	mg = CORO_MAGIC (coro);
		342	return (struct coro *)mg->mg_ptr;
		343	}
		344
		345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		346
282	/* the next two functions merely cache the padlists */	347	/* the next two functions merely cache the padlists */
283	static void	348	static void
284	get_padlist (CV *cv)	349	get_padlist (pTHX_ CV *cv)
285	{	350	{
286	MAGIC *mg = CORO_MAGIC (cv);	351	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	352	AV *av;
288		353
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291	else	356	else
292	{	357	{
293	#if PREFER_PERL_FUNCTIONS	358	#if CORO_PREFER_PERL_FUNCTIONS
294	/* this is probably cleaner, but also slower? */	359	/* this is probably cleaner, but also slower? */
295	CV *cp = Perl_cv_clone (cv);	360	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	361	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	362	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	363	SvREFCNT_dec (cp);
299	#else	364	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	365	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	366	#endif
302	}	367	}
303	}	368	}
304		369
305	static void	370	static void
306	put_padlist (CV *cv)	371	put_padlist (pTHX_ CV *cv)
307	{	372	{
308	MAGIC *mg = CORO_MAGIC (cv);	373	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	374	AV *av;
310		375
311	if (!mg)	376	if (!mg)
…		…
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	390	}
326		391
327	/** load & save, init *******************************************************/	392	/** load & save, init *******************************************************/
328		393
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	394	static void
335	load_perl (Coro__State c)	395	load_perl (pTHX_ Coro__State c)
336	{	396	{
337	#define VAR(name,type) PL_ ## name = c->name;	397	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	398	# include "state.h"
339	#undef VAR	399	#undef VAR
340		400
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	401	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	402	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	403	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	404	GvSV (irsgv) = c->irssv_sv;
345	{
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347	SvREFCNT_dec (c->irssv);
348	else
349	{
350	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);
353	}
354	}
355		405
356	{	406	{
357	dSP;	407	dSP;
358	CV *cv;	408	CV *cv;
359		409
360	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
362	{	412	{
363	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
366	}	416	}
367		417
368	PUTBACK;	418	PUTBACK;
369	}	419	}
370	assert (!PL_comppad || AvARRAY (PL_comppad));//D
371	}	420	}
372		421
373	static void	422	static void
374	save_perl (Coro__State c)	423	save_perl (pTHX_ Coro__State c)
375	{	424	{
376	assert (!PL_comppad || AvARRAY (PL_comppad));//D
377	{	425	{
378	dSP;	426	dSP;
379	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
380	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
381	PERL_SI *top_si = PL_curstackinfo;	429	PERL_SI *top_si = PL_curstackinfo;
…		…
383	/*	431	/*
384	* the worst thing you can imagine happens first - we have to save	432	* the worst thing you can imagine happens first - we have to save
385	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
386	*/	434	*/
387		435
388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
391	for (;;)	438	for (;;)
392	{	439	{
393	while (cxix >= 0)	440	while (cxix >= 0)
394	{	441	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
396		443
397	if (CxTYPE (cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
398	{	445	{
399	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
400		447
401	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
402	{	449	{
…		…
404	PUSHs ((SV *)CvPADLIST (cv));	451	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
407		454
408	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
409	get_padlist (cv);	456	get_padlist (aTHX_ cv);
410	}	457	}
411	}	458	}
412	}	459	}
413		460
414	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
415	break;	462	break;
416		463
417	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
418	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
419	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
420	}	467	}
421		468
422	PUTBACK;	469	PUTBACK;
423	}	470	}
424		471
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = GvAV (PL_defgv);
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = DEFSV;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = ERRSV;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	475	c->irssv_sv = GvSV (irsgv);
429		476
430	#define VAR(name,type)c->name = PL_ ## name;	477	#define VAR(name,type)c->name = PL_ ## name;
431	# include "state.h"	478	# include "state.h"
432	#undef VAR	479	#undef VAR
433	}	480	}
…		…
436	* allocate various perl stacks. This is an exact copy	483	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	484	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	485	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	486	* not usually need a lot of stackspace.
440	*/	487	*/
441	#if PREFER_PERL_FUNCTIONS	488	#if CORO_PREFER_PERL_FUNCTIONS
442	# define coro_init_stacks init_stacks	489	# define coro_init_stacks init_stacks
443	#else	490	#else
444	static void	491	static void
445	coro_init_stacks ()	492	coro_init_stacks (pTHX)
446	{	493	{
447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	494	PL_curstackinfo = new_stackinfo(64, 6);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	495	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	496	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		498
452	PL_stack_base = AvARRAY(PL_curstack);	499	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	500	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		502
456	New(50,PL_tmps_stack,128,SV*);	503	New(50,PL_tmps_stack,64,SV*);
457	PL_tmps_floor = -1;	504	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	505	PL_tmps_ix = -1;
459	PL_tmps_max = 128;	506	PL_tmps_max = 64;
460		507
461	New(54,PL_markstack,32,I32);	508	New(54,PL_markstack,16,I32);
462	PL_markstack_ptr = PL_markstack;	509	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 32;	510	PL_markstack_max = PL_markstack + 16;
464		511
465	#ifdef SET_MARK_OFFSET	512	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	513	SET_MARK_OFFSET;
467	#endif	514	#endif
468		515
469	New(54,PL_scopestack,32,I32);	516	New(54,PL_scopestack,16,I32);
470	PL_scopestack_ix = 0;	517	PL_scopestack_ix = 0;
471	PL_scopestack_max = 32;	518	PL_scopestack_max = 16;
472		519
473	New(54,PL_savestack,64,ANY);	520	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	521	PL_savestack_ix = 0;
475	PL_savestack_max = 64;	522	PL_savestack_max = 64;
476		523
477	#if !PERL_VERSION_ATLEAST (5,9,0)	524	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,16,OP*);	525	New(54,PL_retstack,4,OP*);
479	PL_retstack_ix = 0;	526	PL_retstack_ix = 0;
480	PL_retstack_max = 16;	527	PL_retstack_max = 4;
481	#endif	528	#endif
482	}	529	}
483	#endif	530	#endif
484		531
485	/*	532	/*
486	* destroy the stacks, the callchain etc...	533	* destroy the stacks, the callchain etc...
487	*/	534	*/
488	static void	535	static void
489	coro_destroy_stacks ()	536	coro_destroy_stacks (pTHX)
490	{	537	{
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)	538	while (PL_curstackinfo->si_next)
509	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
510		540
511	while (PL_curstackinfo)	541	while (PL_curstackinfo)
512	{	542	{
…		…
527	#if !PERL_VERSION_ATLEAST (5,9,0)	557	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	558	Safefree (PL_retstack);
529	#endif	559	#endif
530	}	560	}
531		561
		562	static size_t
		563	coro_rss (pTHX_ struct coro *coro)
		564	{
		565	size_t rss = sizeof (*coro);
		566
		567	if (coro->mainstack)
		568	{
		569	if (coro->flags & CF_RUNNING)
		570	{
		571	#define VAR(name,type)coro->name = PL_ ## name;
		572	# include "state.h"
		573	#undef VAR
		574	}
		575
		576	rss += sizeof (coro->curstackinfo);
		577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		580	rss += coro->tmps_max * sizeof (SV *);
		581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		582	rss += coro->scopestack_max * sizeof (I32);
		583	rss += coro->savestack_max * sizeof (ANY);
		584
		585	#if !PERL_VERSION_ATLEAST (5,9,0)
		586	rss += coro->retstack_max * sizeof (OP *);
		587	#endif
		588	}
		589
		590	return rss;
		591	}
		592
532	/** coroutine stack handling ************************************************/	593	/** coroutine stack handling ************************************************/
533		594
534	static void	595	static void
535	setup_coro (struct coro *coro)	596	coro_setup (pTHX_ struct coro *coro)
536	{	597	{
537	/*	598	/*
538	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
539	*/	600	*/
540
541	coro_init_stacks ();	601	coro_init_stacks (aTHX);
542		602
		603	PL_runops = RUNOPS_DEFAULT;
543	PL_curcop = &PL_compiling;	604	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	605	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	606	PL_comppad = 0;
546	PL_curpm = 0;	607	PL_curpm = 0;
547	PL_localizing = 0;	608	PL_localizing = 0;
548	PL_dirty = 0;	609	PL_dirty = 0;
549	PL_restartop = 0;	610	PL_restartop = 0;
		611
		612	GvSV (PL_defgv) = newSV (0);
		613	GvAV (PL_defgv) = coro->args; coro->args = 0;
		614	GvSV (PL_errgv) = newSV (0);
		615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		616	PL_rs = newSVsv (GvSV (irsgv));
		617	PL_defoutgv = SvREFCNT_inc (stdoutgv);
		618
		619	ENTER; /* necessary e.g. for dounwind */
550		620
551	{	621	{
552	dSP;	622	dSP;
553	LOGOP myop;	623	LOGOP myop;
554		624
555	SvREFCNT_dec (GvAV (PL_defgv));
556	GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558	Zero (&myop, 1, LOGOP);	625	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	626	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	627	myop.op_flags = OPf_WANT_VOID;
561		628
562	PUSHMARK (SP);	629	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	630	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
564	PUTBACK;	631	PUTBACK;
565	PL_op = (OP *)&myop;	632	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	633	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	634	SPAGAIN;
568	}	635	}
569
570	ENTER; /* necessary e.g. for dounwind */
571	}	636	}
572		637
573	static void	638	static void
		639	coro_destroy (pTHX_ struct coro *coro)
		640	{
		641	if (!IN_DESTRUCT)
		642	{
		643	/* restore all saved variables and stuff */
		644	LEAVE_SCOPE (0);
		645	assert (PL_tmps_floor == -1);
		646
		647	/* free all temporaries */
		648	FREETMPS;
		649	assert (PL_tmps_ix == -1);
		650
		651	/* unwind all extra stacks */
		652	POPSTACK_TO (PL_mainstack);
		653
		654	/* unwind main stack */
		655	dounwind (-1);
		656	}
		657
		658	SvREFCNT_dec (GvSV (PL_defgv));
		659	SvREFCNT_dec (GvAV (PL_defgv));
		660	SvREFCNT_dec (GvSV (PL_errgv));
		661	SvREFCNT_dec (PL_defoutgv);
		662	SvREFCNT_dec (PL_rs);
		663	SvREFCNT_dec (GvSV (irsgv));
		664
		665	SvREFCNT_dec (coro->saved_deffh);
		666	//SvREFCNT_dec (coro->throw);
		667
		668	coro_destroy_stacks (aTHX);
		669	}
		670
		671	static void
574	free_coro_mortal ()	672	free_coro_mortal (pTHX)
575	{	673	{
576	if (coro_mortal)	674	if (coro_mortal)
577	{	675	{
578	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	677	coro_mortal = 0;
580	}	678	}
581	}	679	}
582		680
		681	static int
		682	runops_trace (pTHX)
		683	{
		684	COP *oldcop = 0;
		685	int oldcxix = -2;
		686	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		687	coro_cctx *cctx = coro->cctx;
		688
		689	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		690	{
		691	PERL_ASYNC_CHECK ();
		692
		693	if (cctx->flags & CC_TRACE_ALL)
		694	{
		695	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		696	{
		697	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		698	SV **bot, **top;
		699	AV *av = newAV (); /* return values */
		700	SV **cb;
		701	dSP;
		702
		703	GV *gv = CvGV (cx->blk_sub.cv);
		704	SV *fullname = sv_2mortal (newSV (0));
		705	if (isGV (gv))
		706	gv_efullname3 (fullname, gv, 0);
		707
		708	bot = PL_stack_base + cx->blk_oldsp + 1;
		709	top = cx->blk_gimme == G_ARRAY ? SP + 1
		710	: cx->blk_gimme == G_SCALAR ? bot + 1
		711	: bot;
		712
		713	av_extend (av, top - bot);
		714	while (bot < top)
		715	av_push (av, SvREFCNT_inc (*bot++));
		716
		717	PL_runops = RUNOPS_DEFAULT;
		718	ENTER;
		719	SAVETMPS;
		720	EXTEND (SP, 3);
		721	PUSHMARK (SP);
		722	PUSHs (&PL_sv_no);
		723	PUSHs (fullname);
		724	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		725	PUTBACK;
		726	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		727	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		728	SPAGAIN;
		729	FREETMPS;
		730	LEAVE;
		731	PL_runops = runops_trace;
		732	}
		733
		734	if (oldcop != PL_curcop)
		735	{
		736	oldcop = PL_curcop;
		737
		738	if (PL_curcop != &PL_compiling)
		739	{
		740	SV **cb;
		741
		742	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		743	{
		744	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		745
		746	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		747	{
		748	runops_proc_t old_runops = PL_runops;
		749	dSP;
		750	GV *gv = CvGV (cx->blk_sub.cv);
		751	SV *fullname = sv_2mortal (newSV (0));
		752
		753	if (isGV (gv))
		754	gv_efullname3 (fullname, gv, 0);
		755
		756	PL_runops = RUNOPS_DEFAULT;
		757	ENTER;
		758	SAVETMPS;
		759	EXTEND (SP, 3);
		760	PUSHMARK (SP);
		761	PUSHs (&PL_sv_yes);
		762	PUSHs (fullname);
		763	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		764	PUTBACK;
		765	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		766	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		767	SPAGAIN;
		768	FREETMPS;
		769	LEAVE;
		770	PL_runops = runops_trace;
		771	}
		772
		773	oldcxix = cxstack_ix;
		774	}
		775
		776	if (cctx->flags & CC_TRACE_LINE)
		777	{
		778	dSP;
		779
		780	PL_runops = RUNOPS_DEFAULT;
		781	ENTER;
		782	SAVETMPS;
		783	EXTEND (SP, 3);
		784	PL_runops = RUNOPS_DEFAULT;
		785	PUSHMARK (SP);
		786	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		787	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		788	PUTBACK;
		789	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		790	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		791	SPAGAIN;
		792	FREETMPS;
		793	LEAVE;
		794	PL_runops = runops_trace;
		795	}
		796	}
		797	}
		798	}
		799	}
		800
		801	TAINT_NOT;
		802	return 0;
		803	}
		804
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	805	/* inject a fake call to Coro::State::_cctx_init into the execution */
		806	/* _cctx_init should be careful, as it could be called at almost any time */
		807	/* during execution of a perl program */
584	static void NOINLINE	808	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	809	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	810	{
587	dSP;	811	dSP;
588	LOGOP myop;	812	LOGOP myop;
		813
		814	PL_top_env = &PL_start_env;
		815
		816	if (cctx->flags & CC_TRACE)
		817	PL_runops = runops_trace;
589		818
590	Zero (&myop, 1, LOGOP);	819	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	820	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	821	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		822
…		…
599	PL_op = (OP *)&myop;	828	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	829	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	830	SPAGAIN;
602	}	831	}
603		832
		833	/*
		834	* this is a _very_ stripped down perl interpreter ;)
		835	*/
604	static void	836	static void
605	coro_run (void *arg)	837	coro_run (void *arg)
606	{	838	{
		839	dTHX;
		840
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	841	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	842	UNLOCK;
609		843
610	/*	844	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	845	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		846
615	/* inject call to cctx_init */	847	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	848	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		849
618	/* somebody will hit me for both perl_run and PL_restartop */	850	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	851	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	852	perl_run (PL_curinterp);
621		853
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	854	/*
623	abort ();	855	* If perl-run returns we assume exit() was being called or the coro
		856	* fell off the end, which seems to be the only valid (non-bug)
		857	* reason for perl_run to return. We try to exit by jumping to the
		858	* bootstrap-time "top" top_env, as we cannot restore the "main"
		859	* coroutine as Coro has no such concept
		860	*/
		861	PL_top_env = main_top_env;
		862	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	863	}
625		864
626	static coro_cctx *	865	static coro_cctx *
627	cctx_new ()	866	cctx_new ()
628	{	867	{
629	coro_cctx *cctx;	868	coro_cctx *cctx;
		869	void *stack_start;
		870	size_t stack_size;
630		871
631	++cctx_count;	872	++cctx_count;
632		873
633	Newz (0, cctx, 1, coro_cctx);	874	Newz (0, cctx, 1, coro_cctx);
634		875
635	#if HAVE_MMAP	876	#if HAVE_MMAP
636		877
637	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	878	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	879	/* 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);	880	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640		881
641	if (cctx->sptr != (void *)-1)	882	if (cctx->sptr != (void *)-1)
642	{	883	{
643	# if STACKGUARD	884	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	885	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	886	# endif
646	REGISTER_STACK (
647	cctx,
648	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	887	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	888	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	889	cctx->flags |= CC_MAPPED;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	890	}
654	else	891	else
655	#endif	892	#endif
656	{	893	{
657	cctx->ssize = -STACKSIZE * (long)sizeof (long);	894	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, STACKSIZE, long);	895	New (0, cctx->sptr, coro_stacksize, long);
659		896
660	if (!cctx->sptr)	897	if (!cctx->sptr)
661	{	898	{
662	perror ("FATAL: unable to allocate stack for coroutine");	899	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	900	_exit (EXIT_FAILURE);
664	}	901	}
665		902
666	REGISTER_STACK (	903	stack_start = cctx->sptr;
667	cctx,	904	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	905	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		906
		907	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	908	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		909
675	return cctx;	910	return cctx;
676	}	911	}
677		912
678	static void	913	static void
…		…
681	if (!cctx)	916	if (!cctx)
682	return;	917	return;
683		918
684	--cctx_count;	919	--cctx_count;
685		920
686	#if USE_VALGRIND	921	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	922	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	923	#endif
689		924
690	#if HAVE_MMAP	925	#if HAVE_MMAP
691	if (cctx->ssize > 0)	926	if (cctx->flags & CC_MAPPED)
692	munmap (cctx->sptr, cctx->ssize);	927	munmap (cctx->sptr, cctx->ssize);
693	else	928	else
694	#endif	929	#endif
695	Safefree (cctx->sptr);	930	Safefree (cctx->sptr);
696		931
697	Safefree (cctx);	932	Safefree (cctx);
698	}	933	}
699		934
		935	/* wether this cctx should be destructed */
		936	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		937
700	static coro_cctx *	938	static coro_cctx *
701	cctx_get ()	939	cctx_get (pTHX)
702	{	940	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	941	while (cctx_first)
706	{	942	{
707	cctx = cctx_first;	943	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	944	cctx_first = cctx->next;
709	--cctx_idle;	945	--cctx_idle;
710	}	946
711	else	947	if (!CCTX_EXPIRED (cctx))
712	{	948	return cctx;
713	cctx = cctx_new ();	949
714	PL_op = PL_op->op_next;	950	cctx_destroy (cctx);
715	}	951	}
716		952
717	return cctx;	953	return cctx_new ();
718	}	954	}
719		955
720	static void	956	static void
721	cctx_put (coro_cctx *cctx)	957	cctx_put (coro_cctx *cctx)
722	{	958	{
…		…
725	{	961	{
726	coro_cctx *first = cctx_first;	962	coro_cctx *first = cctx_first;
727	cctx_first = first->next;	963	cctx_first = first->next;
728	--cctx_idle;	964	--cctx_idle;
729		965
730	assert (!first->inuse);
731	cctx_destroy (first);	966	cctx_destroy (first);
732	}	967	}
733		968
734	++cctx_idle;	969	++cctx_idle;
735	cctx->next = cctx_first;	970	cctx->next = cctx_first;
736	cctx_first = cctx;	971	cctx_first = cctx;
737	}	972	}
738		973
739	/** coroutine switching *****************************************************/	974	/** coroutine switching *****************************************************/
740		975
741	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	976	static void NOINLINE
		977	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		978	{
		979	if (prev != next)
		980	{
		981	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		982	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		983
		984	if (next->flags & CF_RUNNING)
		985	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		986
		987	if (next->flags & CF_DESTROYED)
		988	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		989
		990	if (PL_lex_state != LEX_NOTPARSING)
		991	croak ("Coro::State::transfer called while parsing, but this is not supported");
		992	}
		993	}
		994
		995	/* always use the TRANSFER macro */
		996	static void NOINLINE
743	transfer (struct coro *prev, struct coro *next)	997	transfer (pTHX_ struct coro *prev, struct coro *next)
744	{	998	{
745	dSTACKLEVEL;	999	dSTACKLEVEL;
746		1000
747	/* sometimes transfer is only called to set idle_sp */	1001	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	1002	if (!next)
…		…
756		1010
757	if (prev->flags & CF_NEW)	1011	if (prev->flags & CF_NEW)
758	{	1012	{
759	/* create a new empty context */	1013	/* create a new empty context */
760	Newz (0, prev->cctx, 1, coro_cctx);	1014	Newz (0, prev->cctx, 1, coro_cctx);
761	prev->cctx->inuse = 1;
762	prev->flags &= ~CF_NEW;	1015	prev->flags &= ~CF_NEW;
763	prev->flags |= CF_RUNNING;	1016	prev->flags |= CF_RUNNING;
764	}	1017	}
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		1018
776	prev->flags &= ~CF_RUNNING;	1019	prev->flags &= ~CF_RUNNING;
777	next->flags |= CF_RUNNING;	1020	next->flags |= CF_RUNNING;
778		1021
779	LOCK;	1022	LOCK;
…		…
781	if (next->flags & CF_NEW)	1024	if (next->flags & CF_NEW)
782	{	1025	{
783	/* need to start coroutine */	1026	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	1027	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	1028	/* first get rid of the old state */
786	save_perl (prev);	1029	save_perl (aTHX_ prev);
787	/* setup coroutine call */	1030	/* setup coroutine call */
788	setup_coro (next);	1031	coro_setup (aTHX_ next);
789	/* need a new stack */
790	assert (!next->cctx);
791	}	1032	}
792	else	1033	else
793	{	1034	{
794	/* coroutine already started */	1035	/* coroutine already started */
795	save_perl (prev);	1036	save_perl (aTHX_ prev);
796	load_perl (next);	1037	load_perl (aTHX_ next);
797	}	1038	}
798		1039
799	prev__cctx = prev->cctx;	1040	prev__cctx = prev->cctx;
800		1041
801	/* possibly "free" the cctx */	1042	/* possibly "free" the cctx */
802	if (prev__cctx->idle_sp == STACKLEVEL)	1043	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
803	{	1044	{
804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1045	/* 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));	1046	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806		1047
807	prev->cctx = 0;	1048	prev->cctx = 0;
808		1049
		1050	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1051	if (CCTX_EXPIRED (prev__cctx))
		1052	next->cctx = cctx_get (aTHX);
		1053
809	cctx_put (prev__cctx);	1054	cctx_put (prev__cctx);
810	prev__cctx->inuse = 0;
811	}	1055	}
812		1056
		1057	++next->usecount;
		1058
813	if (!next->cctx)	1059	if (!next->cctx)
814	{
815	next->cctx = cctx_get ();	1060	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;
818	}
819		1061
820	if (prev__cctx != next->cctx)	1062	if (prev__cctx != next->cctx)
821	{	1063	{
822	prev__cctx->top_env = PL_top_env;	1064	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	1065	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1066	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	1067	}
826		1068
827	free_coro_mortal ();	1069	free_coro_mortal (aTHX);
828	UNLOCK;	1070	UNLOCK;
829	}	1071	}
830	}	1072	}
831		1073
832	struct transfer_args	1074	struct transfer_args
833	{	1075	{
834	struct coro *prev, *next;	1076	struct coro *prev, *next;
835	};	1077	};
836		1078
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1079	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1080	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838		1081
839	/** high level stuff ********************************************************/	1082	/** high level stuff ********************************************************/
840		1083
841	static int	1084	static int
842	coro_state_destroy (struct coro *coro)	1085	coro_state_destroy (pTHX_ struct coro *coro)
843	{	1086	{
844	if (coro->flags & CF_DESTROYED)	1087	if (coro->flags & CF_DESTROYED)
845	return 0;	1088	return 0;
846		1089
847	coro->flags |= CF_DESTROYED;	1090	coro->flags |= CF_DESTROYED;
…		…
859		1102
860	if (coro->mainstack && coro->mainstack != main_mainstack)	1103	if (coro->mainstack && coro->mainstack != main_mainstack)
861	{	1104	{
862	struct coro temp;	1105	struct coro temp;
863		1106
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)	1107	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	1108	croak ("FATAL: tried to destroy currently running coroutine");
871		1109
872	save_perl (&temp);	1110	save_perl (aTHX_ &temp);
873	load_perl (coro);	1111	load_perl (aTHX_ coro);
874		1112
875	coro_destroy_stacks ();	1113	coro_destroy (aTHX_ coro);
876		1114
877	load_perl (&temp); /* this will get rid of defsv etc.. */	1115	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		1116
879	coro->mainstack = 0;	1117	coro->mainstack = 0;
880	}	1118	}
881		1119
882	cctx_destroy (coro->cctx);	1120	cctx_destroy (coro->cctx);
883	SvREFCNT_dec (coro->args);	1121	SvREFCNT_dec (coro->args);
884		1122
		1123	if (coro->next) coro->next->prev = coro->prev;
		1124	if (coro->prev) coro->prev->next = coro->next;
		1125	if (coro == coro_first) coro_first = coro->next;
		1126
885	return 1;	1127	return 1;
886	}	1128	}
887		1129
888	static int	1130	static int
889	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1131	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890	{	1132	{
891	struct coro *coro = (struct coro *)mg->mg_ptr;	1133	struct coro *coro = (struct coro *)mg->mg_ptr;
892	mg->mg_ptr = 0;	1134	mg->mg_ptr = 0;
893		1135
		1136	coro->hv = 0;
		1137
894	if (--coro->refcnt < 0)	1138	if (--coro->refcnt < 0)
895	{	1139	{
896	coro_state_destroy (coro);	1140	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	1141	Safefree (coro);
898	}	1142	}
899		1143
900	return 0;	1144	return 0;
901	}	1145	}
…		…
919	#else	1163	#else
920	# define MGf_DUP 0	1164	# define MGf_DUP 0
921	#endif	1165	#endif
922	};	1166	};
923		1167
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 = SvMAGIC (coro);
942	assert (mg->mg_type == PERL_MAGIC_ext);
943	return (struct coro *)mg->mg_ptr;
944	}
945
946	static void	1168	static void
947	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1169	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
948	{	1170	{
949	ta->prev = SvSTATE (prev_sv);	1171	ta->prev = SvSTATE (prev_sv);
950	ta->next = SvSTATE (next_sv);	1172	ta->next = SvSTATE (next_sv);
		1173	TRANSFER_CHECK (*ta);
951	}	1174	}
952		1175
953	static void	1176	static void
954	api_transfer (SV *prev_sv, SV *next_sv)	1177	api_transfer (SV *prev_sv, SV *next_sv)
955	{	1178	{
		1179	dTHX;
956	struct transfer_args ta;	1180	struct transfer_args ta;
957		1181
958	prepare_transfer (&ta, prev_sv, next_sv);	1182	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
959	TRANSFER (ta);	1183	TRANSFER (ta);
960	}	1184	}
961		1185
962	static int
963	api_save (SV *coro_sv, int new_save)
964	{
965	struct coro *coro = SvSTATE (coro_sv);
966	int old_save = coro->save;
967
968	if (new_save >= 0)
969	coro->save = new_save;
970
971	return old_save;
972	}
973
974	/** Coro ********************************************************************/	1186	/** Coro ********************************************************************/
975		1187
976	static void	1188	static void
977	coro_enq (SV *coro_sv)	1189	coro_enq (pTHX_ SV *coro_sv)
978	{	1190	{
979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1191	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
980	}	1192	}
981		1193
982	static SV *	1194	static SV *
983	coro_deq (int min_prio)	1195	coro_deq (pTHX_ int min_prio)
984	{	1196	{
985	int prio = PRIO_MAX - PRIO_MIN;	1197	int prio = PRIO_MAX - PRIO_MIN;
986		1198
987	min_prio -= PRIO_MIN;	1199	min_prio -= PRIO_MIN;
988	if (min_prio < 0)	1200	if (min_prio < 0)
…		…
996	}	1208	}
997		1209
998	static int	1210	static int
999	api_ready (SV *coro_sv)	1211	api_ready (SV *coro_sv)
1000	{	1212	{
		1213	dTHX;
1001	struct coro *coro;	1214	struct coro *coro;
1002		1215
1003	if (SvROK (coro_sv))	1216	if (SvROK (coro_sv))
1004	coro_sv = SvRV (coro_sv);	1217	coro_sv = SvRV (coro_sv);
1005		1218
…		…
1009	return 0;	1222	return 0;
1010		1223
1011	coro->flags |= CF_READY;	1224	coro->flags |= CF_READY;
1012		1225
1013	LOCK;	1226	LOCK;
1014	coro_enq (SvREFCNT_inc (coro_sv));	1227	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1015	++coro_nready;	1228	++coro_nready;
1016	UNLOCK;	1229	UNLOCK;
1017		1230
1018	return 1;	1231	return 1;
1019	}	1232	}
1020		1233
1021	static int	1234	static int
1022	api_is_ready (SV *coro_sv)	1235	api_is_ready (SV *coro_sv)
1023	{	1236	{
		1237	dTHX;
1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1238	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1025	}	1239	}
1026		1240
1027	static void	1241	static void
1028	prepare_schedule (struct transfer_args *ta)	1242	prepare_schedule (pTHX_ struct transfer_args *ta)
1029	{	1243	{
1030	SV *prev_sv, *next_sv;	1244	SV *prev_sv, *next_sv;
1031		1245
1032	for (;;)	1246	for (;;)
1033	{	1247	{
1034	LOCK;	1248	LOCK;
1035	next_sv = coro_deq (PRIO_MIN);	1249	next_sv = coro_deq (aTHX_ PRIO_MIN);
1036		1250
1037	/* nothing to schedule: call the idle handler */	1251	/* nothing to schedule: call the idle handler */
1038	if (!next_sv)	1252	if (!next_sv)
1039	{	1253	{
1040	dSP;	1254	dSP;
…		…
1068	break;	1282	break;
1069	}	1283	}
1070		1284
1071	/* free this only after the transfer */	1285	/* free this only after the transfer */
1072	prev_sv = SvRV (coro_current);	1286	prev_sv = SvRV (coro_current);
1073	SvRV_set (coro_current, next_sv);
1074	ta->prev = SvSTATE (prev_sv);	1287	ta->prev = SvSTATE (prev_sv);
1075		1288	TRANSFER_CHECK (*ta);
1076	assert (ta->next->flags & CF_READY);	1289	assert (ta->next->flags & CF_READY);
1077	ta->next->flags &= ~CF_READY;	1290	ta->next->flags &= ~CF_READY;
		1291	SvRV_set (coro_current, next_sv);
1078		1292
1079	LOCK;	1293	LOCK;
1080	free_coro_mortal ();	1294	free_coro_mortal (aTHX);
1081	coro_mortal = prev_sv;	1295	coro_mortal = prev_sv;
1082	UNLOCK;	1296	UNLOCK;
1083	}	1297	}
1084		1298
1085	static void	1299	static void
1086	prepare_cede (struct transfer_args *ta)	1300	prepare_cede (pTHX_ struct transfer_args *ta)
1087	{	1301	{
1088	api_ready (coro_current);	1302	api_ready (coro_current);
1089	prepare_schedule (ta);	1303	prepare_schedule (aTHX_ ta);
1090	}	1304	}
1091		1305
1092	static int	1306	static int
1093	prepare_cede_notself (struct transfer_args *ta)	1307	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1094	{	1308	{
1095	if (coro_nready)	1309	if (coro_nready)
1096	{	1310	{
1097	SV *prev = SvRV (coro_current);	1311	SV *prev = SvRV (coro_current);
1098	prepare_schedule (ta);	1312	prepare_schedule (aTHX_ ta);
1099	api_ready (prev);	1313	api_ready (prev);
1100	return 1;	1314	return 1;
1101	}	1315	}
1102	else	1316	else
1103	return 0;	1317	return 0;
1104	}	1318	}
1105		1319
1106	static void	1320	static void
1107	api_schedule (void)	1321	api_schedule (void)
1108	{	1322	{
		1323	dTHX;
1109	struct transfer_args ta;	1324	struct transfer_args ta;
1110		1325
1111	prepare_schedule (&ta);	1326	prepare_schedule (aTHX_ &ta);
1112	TRANSFER (ta);	1327	TRANSFER (ta);
1113	}	1328	}
1114		1329
1115	static int	1330	static int
1116	api_cede (void)	1331	api_cede (void)
1117	{	1332	{
		1333	dTHX;
1118	struct transfer_args ta;	1334	struct transfer_args ta;
1119		1335
1120	prepare_cede (&ta);	1336	prepare_cede (aTHX_ &ta);
1121		1337
1122	if (ta.prev != ta.next)	1338	if (ta.prev != ta.next)
1123	{	1339	{
1124	TRANSFER (ta);	1340	TRANSFER (ta);
1125	return 1;	1341	return 1;
…		…
1129	}	1345	}
1130		1346
1131	static int	1347	static int
1132	api_cede_notself (void)	1348	api_cede_notself (void)
1133	{	1349	{
		1350	dTHX;
1134	struct transfer_args ta;	1351	struct transfer_args ta;
1135		1352
1136	if (prepare_cede_notself (&ta))	1353	if (prepare_cede_notself (aTHX_ &ta))
1137	{	1354	{
1138	TRANSFER (ta);	1355	TRANSFER (ta);
1139	return 1;	1356	return 1;
1140	}	1357	}
1141	else	1358	else
1142	return 0;	1359	return 0;
1143	}	1360	}
1144		1361
		1362	static void
		1363	api_trace (SV *coro_sv, int flags)
		1364	{
		1365	dTHX;
		1366	struct coro *coro = SvSTATE (coro_sv);
		1367
		1368	if (flags & CC_TRACE)
		1369	{
		1370	if (!coro->cctx)
		1371	coro->cctx = cctx_new ();
		1372	else if (!(coro->cctx->flags & CC_TRACE))
		1373	croak ("cannot enable tracing on coroutine with custom stack");
		1374
		1375	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1376	}
		1377	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1378	{
		1379	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1380
		1381	if (coro->flags & CF_RUNNING)
		1382	PL_runops = RUNOPS_DEFAULT;
		1383	else
		1384	coro->runops = RUNOPS_DEFAULT;
		1385	}
		1386	}
		1387
1145	MODULE = Coro::State PACKAGE = Coro::State	1388	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1146		1389
1147	PROTOTYPES: DISABLE	1390	PROTOTYPES: DISABLE
1148		1391
1149	BOOT:	1392	BOOT:
1150	{	1393	{
1151	#ifdef USE_ITHREADS	1394	#ifdef USE_ITHREADS
1152	MUTEX_INIT (&coro_mutex);	1395	MUTEX_INIT (&coro_mutex);
1153	#endif	1396	#endif
1154	BOOT_PAGESIZE;	1397	BOOT_PAGESIZE;
1155		1398
		1399	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1400	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1401
1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1402	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1157		1403
		1404	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1405	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1406	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1159	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1160	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1161	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1162	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1407	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1163		1408
1164	main_mainstack = PL_mainstack;	1409	main_mainstack = PL_mainstack;
		1410	main_top_env = PL_top_env;
		1411
		1412	while (main_top_env->je_prev)
		1413	main_top_env = main_top_env->je_prev;
1165		1414
1166	coroapi.ver = CORO_API_VERSION;	1415	coroapi.ver = CORO_API_VERSION;
1167	coroapi.transfer = api_transfer;	1416	coroapi.transfer = api_transfer;
1168		1417
1169	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1418	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1176	struct coro *coro;	1425	struct coro *coro;
1177	HV *hv;	1426	HV *hv;
1178	int i;	1427	int i;
1179		1428
1180	Newz (0, coro, 1, struct coro);	1429	Newz (0, coro, 1, struct coro);
1181	coro->args = newAV ();	1430	coro->args = newAV ();
1182	coro->save = CORO_SAVE_ALL;
1183	coro->flags = CF_NEW;	1431	coro->flags = CF_NEW;
1184		1432
		1433	if (coro_first) coro_first->prev = coro;
		1434	coro->next = coro_first;
		1435	coro_first = coro;
		1436
1185	hv = newHV ();	1437	coro->hv = hv = newHV ();
1186	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1438	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1187	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1439	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1188		1440
		1441	av_extend (coro->args, items - 1);
1189	for (i = 1; i < items; i++)	1442	for (i = 1; i < items; i++)
1190	av_push (coro->args, newSVsv (ST (i)));	1443	av_push (coro->args, newSVsv (ST (i)));
1191	}	1444	}
1192	OUTPUT:	1445	OUTPUT:
1193	RETVAL	1446	RETVAL
1194		1447
1195	int	1448	# these not obviously related functions are all rolled into the same xs
1196	save (SV *coro, int new_save = -1)	1449	# function to increase chances that they all will call transfer with the same
1197	CODE:	1450	# stack offset
1198	RETVAL = api_save (coro, new_save);
1199	OUTPUT:
1200	RETVAL
1201
1202	void	1451	void
1203	_set_stacklevel (...)	1452	_set_stacklevel (...)
1204	ALIAS:	1453	ALIAS:
1205	Coro::State::transfer = 1	1454	Coro::State::transfer = 1
1206	Coro::schedule = 2	1455	Coro::schedule = 2
…		…
1219		1468
1220	case 1:	1469	case 1:
1221	if (items != 2)	1470	if (items != 2)
1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1471	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1223		1472
1224	prepare_transfer (&ta, ST (0), ST (1));	1473	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1225	break;	1474	break;
1226		1475
1227	case 2:	1476	case 2:
1228	prepare_schedule (&ta);	1477	prepare_schedule (aTHX_ &ta);
1229	break;	1478	break;
1230		1479
1231	case 3:	1480	case 3:
1232	prepare_cede (&ta);	1481	prepare_cede (aTHX_ &ta);
1233	break;	1482	break;
1234		1483
1235	case 4:	1484	case 4:
1236	if (!prepare_cede_notself (&ta))	1485	if (!prepare_cede_notself (aTHX_ &ta))
1237	XSRETURN_EMPTY;	1486	XSRETURN_EMPTY;
1238		1487
1239	break;	1488	break;
1240	}	1489	}
1241		1490
…		…
1247	}	1496	}
1248		1497
1249	bool	1498	bool
1250	_destroy (SV *coro_sv)	1499	_destroy (SV *coro_sv)
1251	CODE:	1500	CODE:
1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1501	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1253	OUTPUT:	1502	OUTPUT:
1254	RETVAL	1503	RETVAL
1255		1504
1256	void	1505	void
1257	_exit (code)	1506	_exit (code)
…		…
1259	PROTOTYPE: $	1508	PROTOTYPE: $
1260	CODE:	1509	CODE:
1261	_exit (code);	1510	_exit (code);
1262		1511
1263	int	1512	int
		1513	cctx_stacksize (int new_stacksize = 0)
		1514	CODE:
		1515	RETVAL = coro_stacksize;
		1516	if (new_stacksize)
		1517	coro_stacksize = new_stacksize;
		1518	OUTPUT:
		1519	RETVAL
		1520
		1521	int
1264	cctx_count ()	1522	cctx_count ()
1265	CODE:	1523	CODE:
1266	RETVAL = cctx_count;	1524	RETVAL = cctx_count;
1267	OUTPUT:	1525	OUTPUT:
1268	RETVAL	1526	RETVAL
…		…
1272	CODE:	1530	CODE:
1273	RETVAL = cctx_idle;	1531	RETVAL = cctx_idle;
1274	OUTPUT:	1532	OUTPUT:
1275	RETVAL	1533	RETVAL
1276		1534
		1535	void
		1536	list ()
		1537	PPCODE:
		1538	{
		1539	struct coro *coro;
		1540	for (coro = coro_first; coro; coro = coro->next)
		1541	if (coro->hv)
		1542	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1543	}
		1544
		1545	void
		1546	call (Coro::State coro, SV *coderef)
		1547	ALIAS:
		1548	eval = 1
		1549	CODE:
		1550	{
		1551	if (coro->mainstack)
		1552	{
		1553	struct coro temp;
		1554	Zero (&temp, 1, struct coro);
		1555
		1556	if (!(coro->flags & CF_RUNNING))
		1557	{
		1558	save_perl (aTHX_ &temp);
		1559	load_perl (aTHX_ coro);
		1560	}
		1561
		1562	{
		1563	dSP;
		1564	ENTER;
		1565	SAVETMPS;
		1566	PUSHMARK (SP);
		1567	PUTBACK;
		1568	if (ix)
		1569	eval_sv (coderef, 0);
		1570	else
		1571	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1572	SPAGAIN;
		1573	FREETMPS;
		1574	LEAVE;
		1575	PUTBACK;
		1576	}
		1577
		1578	if (!(coro->flags & CF_RUNNING))
		1579	{
		1580	save_perl (aTHX_ coro);
		1581	load_perl (aTHX_ &temp);
		1582	}
		1583	}
		1584	}
		1585
		1586	SV *
		1587	is_ready (Coro::State coro)
		1588	PROTOTYPE: $
		1589	ALIAS:
		1590	is_ready = CF_READY
		1591	is_running = CF_RUNNING
		1592	is_new = CF_NEW
		1593	is_destroyed = CF_DESTROYED
		1594	CODE:
		1595	RETVAL = boolSV (coro->flags & ix);
		1596	OUTPUT:
		1597	RETVAL
		1598
		1599	void
		1600	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1601
		1602	SV *
		1603	has_stack (Coro::State coro)
		1604	PROTOTYPE: $
		1605	CODE:
		1606	RETVAL = boolSV (!!coro->cctx);
		1607	OUTPUT:
		1608	RETVAL
		1609
		1610	int
		1611	is_traced (Coro::State coro)
		1612	PROTOTYPE: $
		1613	CODE:
		1614	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1615	OUTPUT:
		1616	RETVAL
		1617
		1618	IV
		1619	rss (Coro::State coro)
		1620	PROTOTYPE: $
		1621	ALIAS:
		1622	usecount = 1
		1623	CODE:
		1624	switch (ix)
		1625	{
		1626	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1627	case 1: RETVAL = coro->usecount; break;
		1628	}
		1629	OUTPUT:
		1630	RETVAL
		1631
		1632
1277	MODULE = Coro::State PACKAGE = Coro	1633	MODULE = Coro::State PACKAGE = Coro
1278		1634
1279	BOOT:	1635	BOOT:
1280	{	1636	{
1281	int i;	1637	int i;
		1638
		1639	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1640	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1641	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1642
		1643	coro_current = get_sv ("Coro::current", FALSE);
		1644	SvREADONLY_on (coro_current);
1282		1645
1283	coro_stash = gv_stashpv ("Coro", TRUE);	1646	coro_stash = gv_stashpv ("Coro", TRUE);
1284		1647
1285	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1648	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1286	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1649	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1287	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1650	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1288	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1651	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1289	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1652	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1290	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1653	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1291		1654
1292	coro_current = get_sv ("Coro::current", FALSE);
1293	SvREADONLY_on (coro_current);
1294
1295	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1655	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1296	coro_ready[i] = newAV ();	1656	coro_ready[i] = newAV ();
1297		1657
1298	{	1658	{
1299	SV *sv = perl_get_sv("Coro::API", 1);	1659	SV *sv = perl_get_sv("Coro::API", 1);
1300		1660
1301	coroapi.schedule = api_schedule;	1661	coroapi.schedule = api_schedule;
1302	coroapi.save = api_save;
1303	coroapi.cede = api_cede;	1662	coroapi.cede = api_cede;
1304	coroapi.cede_notself = api_cede_notself;	1663	coroapi.cede_notself = api_cede_notself;
1305	coroapi.ready = api_ready;	1664	coroapi.ready = api_ready;
1306	coroapi.is_ready = api_is_ready;	1665	coroapi.is_ready = api_is_ready;
1307	coroapi.nready = &coro_nready;	1666	coroapi.nready = &coro_nready;
…		…
1348	CODE:	1707	CODE:
1349	RETVAL = boolSV (api_ready (self));	1708	RETVAL = boolSV (api_ready (self));
1350	OUTPUT:	1709	OUTPUT:
1351	RETVAL	1710	RETVAL
1352		1711
1353	SV *
1354	is_ready (SV *self)
1355	PROTOTYPE: $
1356	CODE:
1357	RETVAL = boolSV (api_is_ready (self));
1358	OUTPUT:
1359	RETVAL
1360
1361	int	1712	int
1362	nready (...)	1713	nready (...)
1363	PROTOTYPE:	1714	PROTOTYPE:
1364	CODE:	1715	CODE:
1365	RETVAL = coro_nready;	1716	RETVAL = coro_nready;
1366	OUTPUT:	1717	OUTPUT:
1367	RETVAL	1718	RETVAL
1368		1719
		1720	# for async_pool speedup
		1721	void
		1722	_pool_1 (SV *cb)
		1723	CODE:
		1724	{
		1725	struct coro *coro = SvSTATE (coro_current);
		1726	HV *hv = (HV *)SvRV (coro_current);
		1727	AV *defav = GvAV (PL_defgv);
		1728	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1729	AV *invoke_av;
		1730	int i, len;
		1731
		1732	if (!invoke)
		1733	croak ("\3terminate\2\n");
		1734
		1735	SvREFCNT_dec (coro->saved_deffh);
		1736	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1737
		1738	hv_store (hv, "desc", sizeof ("desc") - 1,
		1739	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1740
		1741	invoke_av = (AV *)SvRV (invoke);
		1742	len = av_len (invoke_av);
		1743
		1744	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1745
		1746	if (len > 0)
		1747	{
		1748	av_fill (defav, len - 1);
		1749	for (i = 0; i < len; ++i)
		1750	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1751	}
		1752
		1753	SvREFCNT_dec (invoke);
		1754	}
		1755
		1756	void
		1757	_pool_2 (SV *cb)
		1758	CODE:
		1759	{
		1760	struct coro *coro = SvSTATE (coro_current);
		1761
		1762	sv_setsv (cb, &PL_sv_undef);
		1763
		1764	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1765	coro->saved_deffh = 0;
		1766
		1767	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1768	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1769	croak ("\3terminate\2\n");
		1770
		1771	av_clear (GvAV (PL_defgv));
		1772	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1773	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1774
		1775	coro->prio = 0;
		1776
		1777	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1778	api_trace (coro_current, 0);
		1779
		1780	av_push (av_async_pool, newSVsv (coro_current));
		1781	}
		1782
		1783
1369	MODULE = Coro::State PACKAGE = Coro::AIO	1784	MODULE = Coro::State PACKAGE = Coro::AIO
1370		1785
1371	SV *	1786	SV *
1372	_get_state ()	1787	_get_state ()
1373	CODE:	1788	CODE:

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