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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 1.186 by root, Fri Oct 5 20:10:42 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
…		…
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
78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
79	# undef STACKGUARD	81	# undef CORO_STACKGUARD
80	#endif	82	#endif
81		83
82	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
83	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
84	#endif	86	#endif
85		87
86	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
87	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define 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 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	SV *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 transfers to this coro */
		207
187	/* coro process data */	208	/* coro process data */
188	int prio;	209	int prio;
		210	//SV *throw;
		211
		212	/* async_pool */
		213	SV *saved_deffh;
		214
		215	/* linked list */
		216	struct coro *next, *prev;
		217	HV *hv; /* the perl hash associated with this coro, if any */
189	};	218	};
190		219
191	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
193		222
…		…
202		231
203	/* for Coro.pm */	232	/* for Coro.pm */
204	static SV *coro_current;	233	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	235	static int coro_nready;
		236	static struct coro *coro_first;
207		237
208	/** lowlevel stuff **********************************************************/	238	/** lowlevel stuff **********************************************************/
209		239
210	static AV *	240	static AV *
211	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
212	{	242	{
213	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	244	AV *newpadlist, *newpad;
215		245
216	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
228		258
229	return newpadlist;	259	return newpadlist;
230	}	260	}
231		261
232	static void	262	static void
233	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
234	{	264	{
235	/* may be during global destruction */	265	/* may be during global destruction */
236	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
237	{	267	{
238	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	289	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	290	AV *av = (AV *)mg->mg_obj;
261		291
262	/* casting is fun. */	292	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
265		295
266	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
267		297
268	return 0;	298	return 0;
269	}	299	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	310	: 0
281		311
		312	static struct coro *
		313	SvSTATE_ (pTHX_ SV *coro)
		314	{
		315	HV *stash;
		316	MAGIC *mg;
		317
		318	if (SvROK (coro))
		319	coro = SvRV (coro);
		320
		321	if (SvTYPE (coro) != SVt_PVHV)
		322	croak ("Coro::State object required");
		323
		324	stash = SvSTASH (coro);
		325	if (stash != coro_stash && stash != coro_state_stash)
		326	{
		327	/* very slow, but rare, check */
		328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		329	croak ("Coro::State object required");
		330	}
		331
		332	mg = CORO_MAGIC (coro);
		333	return (struct coro *)mg->mg_ptr;
		334	}
		335
		336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		337
282	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
283	static void	339	static void
284	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
285	{	341	{
286	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	343	AV *av;
288		344
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291	else	347	else
292	{	348	{
293	#if PREFER_PERL_FUNCTIONS	349	#if CORO_PREFER_PERL_FUNCTIONS
294	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
295	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
299	#else	355	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	357	#endif
302	}	358	}
303	}	359	}
304		360
305	static void	361	static void
306	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
307	{	363	{
308	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	365	AV *av;
310		366
311	if (!mg)	367	if (!mg)
…		…
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	381	}
326		382
327	/** load & save, init *******************************************************/	383	/** load & save, init *******************************************************/
328		384
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	385	static void
335	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
336	{	387	{
337	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	389	# include "state.h"
339	#undef VAR	390	#undef VAR
340		391
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	395	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		396
356	{	397	{
357	dSP;	398	dSP;
358	CV *cv;	399	CV *cv;
359		400
360	/* now do the ugly restore mess */	401	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	402	while ((cv = (CV *)POPs))
362	{	403	{
363	put_padlist (cv); /* mark this padlist as available */	404	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	405	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	406	CvPADLIST (cv) = (AV *)POPs;
366	}	407	}
367		408
368	PUTBACK;	409	PUTBACK;
369	}	410	}
370	assert (!PL_comppad || AvARRAY (PL_comppad));//D
371	}	411	}
372		412
373	static void	413	static void
374	save_perl (Coro__State c)	414	save_perl (pTHX_ Coro__State c)
375	{	415	{
376	assert (!PL_comppad || AvARRAY (PL_comppad));//D
377	{	416	{
378	dSP;	417	dSP;
379	I32 cxix = cxstack_ix;	418	I32 cxix = cxstack_ix;
380	PERL_CONTEXT *ccstk = cxstack;	419	PERL_CONTEXT *ccstk = cxstack;
381	PERL_SI *top_si = PL_curstackinfo;	420	PERL_SI *top_si = PL_curstackinfo;
…		…
383	/*	422	/*
384	* the worst thing you can imagine happens first - we have to save	423	* the worst thing you can imagine happens first - we have to save
385	* (and reinitialize) all cv's in the whole callchain :(	424	* (and reinitialize) all cv's in the whole callchain :(
386	*/	425	*/
387		426
388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	427	XPUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	428	/* this loop was inspired by pp_caller */
391	for (;;)	429	for (;;)
392	{	430	{
393	while (cxix >= 0)	431	while (cxix >= 0)
394	{	432	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	433	PERL_CONTEXT *cx = &ccstk[cxix--];
396		434
397	if (CxTYPE (cx) == CXt_SUB)	435	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
398	{	436	{
399	CV *cv = cx->blk_sub.cv;	437	CV *cv = cx->blk_sub.cv;
400		438
401	if (CvDEPTH (cv))	439	if (CvDEPTH (cv))
402	{	440	{
…		…
404	PUSHs ((SV *)CvPADLIST (cv));	442	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	444	PUSHs ((SV *)cv);
407		445
408	CvDEPTH (cv) = 0;	446	CvDEPTH (cv) = 0;
409	get_padlist (cv);	447	get_padlist (aTHX_ cv);
410	}	448	}
411	}	449	}
412	}	450	}
413		451
414	if (top_si->si_type == PERLSI_MAIN)	452	if (top_si->si_type == PERLSI_MAIN)
415	break;	453	break;
416		454
417	top_si = top_si->si_prev;	455	top_si = top_si->si_prev;
418	ccstk = top_si->si_cxstack;	456	ccstk = top_si->si_cxstack;
419	cxix = top_si->si_cxix;	457	cxix = top_si->si_cxix;
420	}	458	}
421		459
422	PUTBACK;	460	PUTBACK;
423	}	461	}
424		462
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	463	c->defav = GvAV (PL_defgv);
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	464	c->defsv = DEFSV;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	465	c->errsv = ERRSV;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	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	}
…		…
436	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
437	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
438	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
439	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
440	*/	478	*/
441	#if 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 (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
532	/** coroutine stack handling ************************************************/	584	/** coroutine stack handling ************************************************/
533		585
534	static void	586	static void
535	setup_coro (struct coro *coro)	587	coro_setup (pTHX_ struct coro *coro)
536	{	588	{
537	/*	589	/*
538	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
539	*/	591	*/
540
541	coro_init_stacks ();	592	coro_init_stacks (aTHX);
542		593
		594	PL_runops = RUNOPS_DEFAULT;
543	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	597	PL_comppad = 0;
546	PL_curpm = 0;	598	PL_curpm = 0;
547	PL_localizing = 0;	599	PL_localizing = 0;
548	PL_dirty = 0;	600	PL_dirty = 0;
549	PL_restartop = 0;	601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = (GV *)NEWSV (0, 0);
		612	gv_init (PL_defoutgv, coro_state_stash, "stdout", sizeof ("stdout") - 1, 0);
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) |= IOf_FLUSH;
		616	GvIOp (PL_defoutgv) = io;
		617	}
550		618
551	{	619	{
552	dSP;	620	dSP;
553	LOGOP myop;	621	LOGOP myop;
554		622
555	SvREFCNT_dec (GvAV (PL_defgv));
556	GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558	Zero (&myop, 1, LOGOP);	623	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	624	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	625	myop.op_flags = OPf_WANT_VOID;
561		626
562	PUSHMARK (SP);	627	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	628	XPUSHs (av_shift (GvAV (PL_defgv)));
564	PUTBACK;	629	PUTBACK;
565	PL_op = (OP *)&myop;	630	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	631	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	632	SPAGAIN;
568	}	633	}
569		634
570	ENTER; /* necessary e.g. for dounwind */	635	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	while (bot < top)
		714	av_push (av, SvREFCNT_inc (*bot++));
		715
		716	PL_runops = RUNOPS_DEFAULT;
		717	ENTER;
		718	SAVETMPS;
		719	EXTEND (SP, 3);
		720	PUSHMARK (SP);
		721	PUSHs (&PL_sv_no);
		722	PUSHs (fullname);
		723	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		724	PUTBACK;
		725	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		726	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		727	SPAGAIN;
		728	FREETMPS;
		729	LEAVE;
		730	PL_runops = runops_trace;
		731	}
		732
		733	if (oldcop != PL_curcop)
		734	{
		735	oldcop = PL_curcop;
		736
		737	if (PL_curcop != &PL_compiling)
		738	{
		739	SV **cb;
		740
		741	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		742	{
		743	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		744
		745	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		746	{
		747	runops_proc_t old_runops = PL_runops;
		748	dSP;
		749	GV *gv = CvGV (cx->blk_sub.cv);
		750	SV *fullname = sv_2mortal (newSV (0));
		751
		752	if (isGV (gv))
		753	gv_efullname3 (fullname, gv, 0);
		754
		755	PL_runops = RUNOPS_DEFAULT;
		756	ENTER;
		757	SAVETMPS;
		758	EXTEND (SP, 3);
		759	PUSHMARK (SP);
		760	PUSHs (&PL_sv_yes);
		761	PUSHs (fullname);
		762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		766	SPAGAIN;
		767	FREETMPS;
		768	LEAVE;
		769	PL_runops = runops_trace;
		770	}
		771
		772	oldcxix = cxstack_ix;
		773	}
		774
		775	if (cctx->flags & CC_TRACE_LINE)
		776	{
		777	dSP;
		778
		779	PL_runops = RUNOPS_DEFAULT;
		780	ENTER;
		781	SAVETMPS;
		782	EXTEND (SP, 3);
		783	PL_runops = RUNOPS_DEFAULT;
		784	PUSHMARK (SP);
		785	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		786	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		787	PUTBACK;
		788	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		789	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		790	SPAGAIN;
		791	FREETMPS;
		792	LEAVE;
		793	PL_runops = runops_trace;
		794	}
		795	}
		796	}
		797	}
		798	}
		799
		800	TAINT_NOT;
		801	return 0;
		802	}
		803
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	804	/* inject a fake call to Coro::State::_cctx_init into the execution */
		805	/* _cctx_init should be careful, as it could be called at almost any time */
		806	/* during execution of a perl program */
584	static void NOINLINE	807	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	809	{
587	dSP;	810	dSP;
588	LOGOP myop;	811	LOGOP myop;
		812
		813	PL_top_env = &PL_start_env;
		814
		815	if (cctx->flags & CC_TRACE)
		816	PL_runops = runops_trace;
589		817
590	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	819	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	820	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		821
…		…
599	PL_op = (OP *)&myop;	827	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	829	SPAGAIN;
602	}	830	}
603		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
604	static void	835	static void
605	coro_run (void *arg)	836	coro_run (void *arg)
606	{	837	{
		838	dTHX;
		839
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	841	UNLOCK;
609		842
610	/*	843	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	844	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		845
615	/* inject call to cctx_init */	846	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	847	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		848
618	/* somebody will hit me for both perl_run and PL_restartop */	849	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	850	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	851	perl_run (PL_curinterp);
621		852
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	853	/*
623	abort ();	854	* If perl-run returns we assume exit() was being called or the coro
		855	* fell off the end, which seems to be the only valid (non-bug)
		856	* reason for perl_run to return. We try to exit by jumping to the
		857	* bootstrap-time "top" top_env, as we cannot restore the "main"
		858	* coroutine as Coro has no such concept
		859	*/
		860	PL_top_env = main_top_env;
		861	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	862	}
625		863
626	static coro_cctx *	864	static coro_cctx *
627	cctx_new ()	865	cctx_new ()
628	{	866	{
629	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
630		870
631	++cctx_count;	871	++cctx_count;
632		872
633	Newz (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
634		874
635	#if HAVE_MMAP	875	#if HAVE_MMAP
636		876
637	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	878	/* 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);	879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640		880
641	if (cctx->sptr != (void *)-1)	881	if (cctx->sptr != (void *)-1)
642	{	882	{
643	# if STACKGUARD	883	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	885	# endif
646	REGISTER_STACK (
647	cctx,
648	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	886	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	887	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	888	cctx->flags |= CC_MAPPED;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	889	}
654	else	890	else
655	#endif	891	#endif
656	{	892	{
657	cctx->ssize = -STACKSIZE * (long)sizeof (long);	893	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, STACKSIZE, long);	894	New (0, cctx->sptr, coro_stacksize, long);
659		895
660	if (!cctx->sptr)	896	if (!cctx->sptr)
661	{	897	{
662	perror ("FATAL: unable to allocate stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
664	}	900	}
665		901
666	REGISTER_STACK (	902	stack_start = cctx->sptr;
667	cctx,	903	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	904	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		905
		906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		908
675	return cctx;	909	return cctx;
676	}	910	}
677		911
678	static void	912	static void
…		…
681	if (!cctx)	915	if (!cctx)
682	return;	916	return;
683		917
684	--cctx_count;	918	--cctx_count;
685		919
686	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	922	#endif
689		923
690	#if HAVE_MMAP	924	#if HAVE_MMAP
691	if (cctx->ssize > 0)	925	if (cctx->flags & CC_MAPPED)
692	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
693	else	927	else
694	#endif	928	#endif
695	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
696		930
697	Safefree (cctx);	931	Safefree (cctx);
698	}	932	}
699		933
700	static coro_cctx *	934	static coro_cctx *
701	cctx_get ()	935	cctx_get (pTHX)
702	{	936	{
703	coro_cctx *cctx;
704
705	if (cctx_first)	937	while (cctx_first)
706	{	938	{
707	cctx = cctx_first;	939	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	940	cctx_first = cctx->next;
709	--cctx_idle;	941	--cctx_idle;
710	}	942
711	else	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
712	{	944	return cctx;
713	cctx = cctx_new ();	945
714	PL_op = PL_op->op_next;	946	cctx_destroy (cctx);
715	}	947	}
716		948
717	return cctx;	949	return cctx_new ();
718	}	950	}
719		951
720	static void	952	static void
721	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
722	{	954	{
…		…
725	{	957	{
726	coro_cctx *first = cctx_first;	958	coro_cctx *first = cctx_first;
727	cctx_first = first->next;	959	cctx_first = first->next;
728	--cctx_idle;	960	--cctx_idle;
729		961
730	assert (!first->inuse);
731	cctx_destroy (first);	962	cctx_destroy (first);
732	}	963	}
733		964
734	++cctx_idle;	965	++cctx_idle;
735	cctx->next = cctx_first;	966	cctx->next = cctx_first;
736	cctx_first = cctx;	967	cctx_first = cctx;
737	}	968	}
738		969
739	/** coroutine switching *****************************************************/	970	/** coroutine switching *****************************************************/
740		971
741	/* never call directly, always through the coro_state_transfer global variable */
742	static void NOINLINE	972	static void NOINLINE
		973	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		974	{
		975	if (prev != next)
		976	{
		977	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		979
		980	if (next->flags & CF_RUNNING)
		981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		982
		983	if (next->flags & CF_DESTROYED)
		984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		985
		986	if (PL_lex_state != LEX_NOTPARSING)
		987	croak ("Coro::State::transfer called while parsing, but this is not supported");
		988	}
		989	}
		990
		991	/* always use the TRANSFER macro */
		992	static void NOINLINE
743	transfer (struct coro *prev, struct coro *next)	993	transfer (pTHX_ struct coro *prev, struct coro *next)
744	{	994	{
745	dSTACKLEVEL;	995	dSTACKLEVEL;
746		996
747	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	998	if (!next)
…		…
756		1006
757	if (prev->flags & CF_NEW)	1007	if (prev->flags & CF_NEW)
758	{	1008	{
759	/* create a new empty context */	1009	/* create a new empty context */
760	Newz (0, prev->cctx, 1, coro_cctx);	1010	Newz (0, prev->cctx, 1, coro_cctx);
761	prev->cctx->inuse = 1;
762	prev->flags &= ~CF_NEW;	1011	prev->flags &= ~CF_NEW;
763	prev->flags |= CF_RUNNING;	1012	prev->flags |= CF_RUNNING;
764	}	1013	}
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		1014
776	prev->flags &= ~CF_RUNNING;	1015	prev->flags &= ~CF_RUNNING;
777	next->flags |= CF_RUNNING;	1016	next->flags |= CF_RUNNING;
778		1017
779	LOCK;	1018	LOCK;
…		…
781	if (next->flags & CF_NEW)	1020	if (next->flags & CF_NEW)
782	{	1021	{
783	/* need to start coroutine */	1022	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	1023	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	1024	/* first get rid of the old state */
786	save_perl (prev);	1025	save_perl (aTHX_ prev);
787	/* setup coroutine call */	1026	/* setup coroutine call */
788	setup_coro (next);	1027	coro_setup (aTHX_ next);
789	/* need a new stack */
790	assert (!next->cctx);
791	}	1028	}
792	else	1029	else
793	{	1030	{
794	/* coroutine already started */	1031	/* coroutine already started */
795	save_perl (prev);	1032	save_perl (aTHX_ prev);
796	load_perl (next);	1033	load_perl (aTHX_ next);
797	}	1034	}
798		1035
799	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
800		1037
801	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
802	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
803	{	1040	{
804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1041	/* 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));	1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806		1043
807	prev->cctx = 0;	1044	prev->cctx = 0;
808		1045
809	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
810	prev__cctx->inuse = 0;
811	}	1047	}
812		1048
		1049	++next->usecount;
		1050
813	if (!next->cctx)	1051	if (!next->cctx)
814	{
815	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;
818	}
819		1053
820	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
821	{	1055	{
822	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	1059	}
826		1060
827	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
828	UNLOCK;	1062	UNLOCK;
829	}	1063	}
830	}	1064	}
831		1065
832	struct transfer_args	1066	struct transfer_args
833	{	1067	{
834	struct coro *prev, *next;	1068	struct coro *prev, *next;
835	};	1069	};
836		1070
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838		1073
839	/** high level stuff ********************************************************/	1074	/** high level stuff ********************************************************/
840		1075
841	static int	1076	static int
842	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
843	{	1078	{
844	if (coro->flags & CF_DESTROYED)	1079	if (coro->flags & CF_DESTROYED)
845	return 0;	1080	return 0;
846		1081
847	coro->flags |= CF_DESTROYED;	1082	coro->flags |= CF_DESTROYED;
…		…
859		1094
860	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
861	{	1096	{
862	struct coro temp;	1097	struct coro temp;
863		1098
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)	1099	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	1100	croak ("FATAL: tried to destroy currently running coroutine");
871		1101
872	save_perl (&temp);	1102	save_perl (aTHX_ &temp);
873	load_perl (coro);	1103	load_perl (aTHX_ coro);
874		1104
875	coro_destroy_stacks ();	1105	coro_destroy (aTHX_ coro);
876		1106
877	load_perl (&temp); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		1108
879	coro->mainstack = 0;	1109	coro->mainstack = 0;
880	}	1110	}
881		1111
882	cctx_destroy (coro->cctx);	1112	cctx_destroy (coro->cctx);
883	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
884		1114
		1115	if (coro->next) coro->next->prev = coro->prev;
		1116	if (coro->prev) coro->prev->next = coro->next;
		1117	if (coro == coro_first) coro_first = coro->next;
		1118
885	return 1;	1119	return 1;
886	}	1120	}
887		1121
888	static int	1122	static int
889	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1123	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890	{	1124	{
891	struct coro *coro = (struct coro *)mg->mg_ptr;	1125	struct coro *coro = (struct coro *)mg->mg_ptr;
892	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
893		1127
		1128	coro->hv = 0;
		1129
894	if (--coro->refcnt < 0)	1130	if (--coro->refcnt < 0)
895	{	1131	{
896	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	1133	Safefree (coro);
898	}	1134	}
899		1135
900	return 0;	1136	return 0;
901	}	1137	}
…		…
919	#else	1155	#else
920	# define MGf_DUP 0	1156	# define MGf_DUP 0
921	#endif	1157	#endif
922	};	1158	};
923		1159
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	1160	static void
947	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1161	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
948	{	1162	{
949	ta->prev = SvSTATE (prev_sv);	1163	ta->prev = SvSTATE (prev_sv);
950	ta->next = SvSTATE (next_sv);	1164	ta->next = SvSTATE (next_sv);
		1165	TRANSFER_CHECK (*ta);
951	}	1166	}
952		1167
953	static void	1168	static void
954	api_transfer (SV *prev_sv, SV *next_sv)	1169	api_transfer (SV *prev_sv, SV *next_sv)
955	{	1170	{
		1171	dTHX;
956	struct transfer_args ta;	1172	struct transfer_args ta;
957		1173
958	prepare_transfer (&ta, prev_sv, next_sv);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
959	TRANSFER (ta);	1175	TRANSFER (ta);
960	}	1176	}
961		1177
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 ********************************************************************/	1178	/** Coro ********************************************************************/
975		1179
976	static void	1180	static void
977	coro_enq (SV *coro_sv)	1181	coro_enq (pTHX_ SV *coro_sv)
978	{	1182	{
979	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
980	}	1184	}
981		1185
982	static SV *	1186	static SV *
983	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
984	{	1188	{
985	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
986		1190
987	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
988	if (min_prio < 0)	1192	if (min_prio < 0)
…		…
996	}	1200	}
997		1201
998	static int	1202	static int
999	api_ready (SV *coro_sv)	1203	api_ready (SV *coro_sv)
1000	{	1204	{
		1205	dTHX;
1001	struct coro *coro;	1206	struct coro *coro;
1002		1207
1003	if (SvROK (coro_sv))	1208	if (SvROK (coro_sv))
1004	coro_sv = SvRV (coro_sv);	1209	coro_sv = SvRV (coro_sv);
1005		1210
…		…
1009	return 0;	1214	return 0;
1010		1215
1011	coro->flags |= CF_READY;	1216	coro->flags |= CF_READY;
1012		1217
1013	LOCK;	1218	LOCK;
1014	coro_enq (SvREFCNT_inc (coro_sv));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1015	++coro_nready;	1220	++coro_nready;
1016	UNLOCK;	1221	UNLOCK;
1017		1222
1018	return 1;	1223	return 1;
1019	}	1224	}
1020		1225
1021	static int	1226	static int
1022	api_is_ready (SV *coro_sv)	1227	api_is_ready (SV *coro_sv)
1023	{	1228	{
		1229	dTHX;
1024	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1025	}	1231	}
1026		1232
1027	static void	1233	static void
1028	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
1029	{	1235	{
1030	SV *prev_sv, *next_sv;	1236	SV *prev_sv, *next_sv;
1031		1237
1032	for (;;)	1238	for (;;)
1033	{	1239	{
1034	LOCK;	1240	LOCK;
1035	next_sv = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
1036		1242
1037	/* nothing to schedule: call the idle handler */	1243	/* nothing to schedule: call the idle handler */
1038	if (!next_sv)	1244	if (!next_sv)
1039	{	1245	{
1040	dSP;	1246	dSP;
…		…
1068	break;	1274	break;
1069	}	1275	}
1070		1276
1071	/* free this only after the transfer */	1277	/* free this only after the transfer */
1072	prev_sv = SvRV (coro_current);	1278	prev_sv = SvRV (coro_current);
1073	SvRV_set (coro_current, next_sv);
1074	ta->prev = SvSTATE (prev_sv);	1279	ta->prev = SvSTATE (prev_sv);
1075		1280	TRANSFER_CHECK (*ta);
1076	assert (ta->next->flags & CF_READY);	1281	assert (ta->next->flags & CF_READY);
1077	ta->next->flags &= ~CF_READY;	1282	ta->next->flags &= ~CF_READY;
		1283	SvRV_set (coro_current, next_sv);
1078		1284
1079	LOCK;	1285	LOCK;
1080	free_coro_mortal ();	1286	free_coro_mortal (aTHX);
1081	coro_mortal = prev_sv;	1287	coro_mortal = prev_sv;
1082	UNLOCK;	1288	UNLOCK;
1083	}	1289	}
1084		1290
1085	static void	1291	static void
1086	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
1087	{	1293	{
1088	api_ready (coro_current);	1294	api_ready (coro_current);
1089	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
1090	}	1296	}
1091		1297
1092	static int	1298	static int
1093	prepare_cede_notself (struct transfer_args *ta)	1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1094	{	1300	{
1095	if (coro_nready)	1301	if (coro_nready)
1096	{	1302	{
1097	SV *prev = SvRV (coro_current);	1303	SV *prev = SvRV (coro_current);
1098	prepare_schedule (ta);	1304	prepare_schedule (aTHX_ ta);
1099	api_ready (prev);	1305	api_ready (prev);
1100	return 1;	1306	return 1;
1101	}	1307	}
1102	else	1308	else
1103	return 0;	1309	return 0;
1104	}	1310	}
1105		1311
1106	static void	1312	static void
1107	api_schedule (void)	1313	api_schedule (void)
1108	{	1314	{
		1315	dTHX;
1109	struct transfer_args ta;	1316	struct transfer_args ta;
1110		1317
1111	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
1112	TRANSFER (ta);	1319	TRANSFER (ta);
1113	}	1320	}
1114		1321
1115	static int	1322	static int
1116	api_cede (void)	1323	api_cede (void)
1117	{	1324	{
		1325	dTHX;
1118	struct transfer_args ta;	1326	struct transfer_args ta;
1119		1327
1120	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
1121		1329
1122	if (ta.prev != ta.next)	1330	if (ta.prev != ta.next)
1123	{	1331	{
1124	TRANSFER (ta);	1332	TRANSFER (ta);
1125	return 1;	1333	return 1;
…		…
1129	}	1337	}
1130		1338
1131	static int	1339	static int
1132	api_cede_notself (void)	1340	api_cede_notself (void)
1133	{	1341	{
		1342	dTHX;
1134	struct transfer_args ta;	1343	struct transfer_args ta;
1135		1344
1136	if (prepare_cede_notself (&ta))	1345	if (prepare_cede_notself (aTHX_ &ta))
1137	{	1346	{
1138	TRANSFER (ta);	1347	TRANSFER (ta);
1139	return 1;	1348	return 1;
1140	}	1349	}
1141	else	1350	else
1142	return 0;	1351	return 0;
1143	}	1352	}
1144		1353
		1354	static void
		1355	api_trace (SV *coro_sv, int flags)
		1356	{
		1357	dTHX;
		1358	struct coro *coro = SvSTATE (coro_sv);
		1359
		1360	if (flags & CC_TRACE)
		1361	{
		1362	if (!coro->cctx)
		1363	coro->cctx = cctx_new ();
		1364	else if (!(coro->cctx->flags & CC_TRACE))
		1365	croak ("cannot enable tracing on coroutine with custom stack");
		1366
		1367	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1368	}
		1369	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1370	{
		1371	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1372
		1373	if (coro->flags & CF_RUNNING)
		1374	PL_runops = RUNOPS_DEFAULT;
		1375	else
		1376	coro->runops = RUNOPS_DEFAULT;
		1377	}
		1378	}
		1379
1145	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1146		1381
1147	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1148		1383
1149	BOOT:	1384	BOOT:
1150	{	1385	{
1151	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1152	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1153	#endif	1388	#endif
1154	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1155		1390
		1391	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1392
1156	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1393	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1157		1394
		1395	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1396	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1158	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1397	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));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1163		1399
1164	main_mainstack = PL_mainstack;	1400	main_mainstack = PL_mainstack;
		1401	main_top_env = PL_top_env;
		1402
		1403	while (main_top_env->je_prev)
		1404	main_top_env = main_top_env->je_prev;
1165		1405
1166	coroapi.ver = CORO_API_VERSION;	1406	coroapi.ver = CORO_API_VERSION;
1167	coroapi.transfer = api_transfer;	1407	coroapi.transfer = api_transfer;
1168		1408
1169	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1409	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1176	struct coro *coro;	1416	struct coro *coro;
1177	HV *hv;	1417	HV *hv;
1178	int i;	1418	int i;
1179		1419
1180	Newz (0, coro, 1, struct coro);	1420	Newz (0, coro, 1, struct coro);
1181	coro->args = newAV ();	1421	coro->args = newAV ();
1182	coro->save = CORO_SAVE_ALL;
1183	coro->flags = CF_NEW;	1422	coro->flags = CF_NEW;
1184		1423
		1424	if (coro_first) coro_first->prev = coro;
		1425	coro->next = coro_first;
		1426	coro_first = coro;
		1427
1185	hv = newHV ();	1428	coro->hv = hv = newHV ();
1186	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1429	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));	1430	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1188		1431
1189	for (i = 1; i < items; i++)	1432	for (i = 1; i < items; i++)
1190	av_push (coro->args, newSVsv (ST (i)));	1433	av_push (coro->args, newSVsv (ST (i)));
1191	}	1434	}
1192	OUTPUT:	1435	OUTPUT:
1193	RETVAL	1436	RETVAL
1194		1437
1195	int	1438	# these not obviously related functions are all rolled into the same xs
1196	save (SV *coro, int new_save = -1)	1439	# function to increase chances that they all will call transfer with the same
1197	CODE:	1440	# stack offset
1198	RETVAL = api_save (coro, new_save);
1199	OUTPUT:
1200	RETVAL
1201
1202	void	1441	void
1203	_set_stacklevel (...)	1442	_set_stacklevel (...)
1204	ALIAS:	1443	ALIAS:
1205	Coro::State::transfer = 1	1444	Coro::State::transfer = 1
1206	Coro::schedule = 2	1445	Coro::schedule = 2
…		…
1219		1458
1220	case 1:	1459	case 1:
1221	if (items != 2)	1460	if (items != 2)
1222	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1461	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1223		1462
1224	prepare_transfer (&ta, ST (0), ST (1));	1463	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1225	break;	1464	break;
1226		1465
1227	case 2:	1466	case 2:
1228	prepare_schedule (&ta);	1467	prepare_schedule (aTHX_ &ta);
1229	break;	1468	break;
1230		1469
1231	case 3:	1470	case 3:
1232	prepare_cede (&ta);	1471	prepare_cede (aTHX_ &ta);
1233	break;	1472	break;
1234		1473
1235	case 4:	1474	case 4:
1236	if (!prepare_cede_notself (&ta))	1475	if (!prepare_cede_notself (aTHX_ &ta))
1237	XSRETURN_EMPTY;	1476	XSRETURN_EMPTY;
1238		1477
1239	break;	1478	break;
1240	}	1479	}
1241		1480
…		…
1247	}	1486	}
1248		1487
1249	bool	1488	bool
1250	_destroy (SV *coro_sv)	1489	_destroy (SV *coro_sv)
1251	CODE:	1490	CODE:
1252	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1491	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1253	OUTPUT:	1492	OUTPUT:
1254	RETVAL	1493	RETVAL
1255		1494
1256	void	1495	void
1257	_exit (code)	1496	_exit (code)
…		…
1259	PROTOTYPE: $	1498	PROTOTYPE: $
1260	CODE:	1499	CODE:
1261	_exit (code);	1500	_exit (code);
1262		1501
1263	int	1502	int
		1503	cctx_stacksize (int new_stacksize = 0)
		1504	CODE:
		1505	RETVAL = coro_stacksize;
		1506	if (new_stacksize)
		1507	coro_stacksize = new_stacksize;
		1508	OUTPUT:
		1509	RETVAL
		1510
		1511	int
1264	cctx_count ()	1512	cctx_count ()
1265	CODE:	1513	CODE:
1266	RETVAL = cctx_count;	1514	RETVAL = cctx_count;
1267	OUTPUT:	1515	OUTPUT:
1268	RETVAL	1516	RETVAL
…		…
1272	CODE:	1520	CODE:
1273	RETVAL = cctx_idle;	1521	RETVAL = cctx_idle;
1274	OUTPUT:	1522	OUTPUT:
1275	RETVAL	1523	RETVAL
1276		1524
		1525	void
		1526	list ()
		1527	PPCODE:
		1528	{
		1529	struct coro *coro;
		1530	for (coro = coro_first; coro; coro = coro->next)
		1531	if (coro->hv)
		1532	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1533	}
		1534
		1535	void
		1536	call (Coro::State coro, SV *coderef)
		1537	ALIAS:
		1538	eval = 1
		1539	CODE:
		1540	{
		1541	if (coro->mainstack)
		1542	{
		1543	struct coro temp;
		1544	Zero (&temp, 1, struct coro);
		1545
		1546	if (!(coro->flags & CF_RUNNING))
		1547	{
		1548	save_perl (aTHX_ &temp);
		1549	load_perl (aTHX_ coro);
		1550	}
		1551
		1552	{
		1553	dSP;
		1554	ENTER;
		1555	SAVETMPS;
		1556	PUSHMARK (SP);
		1557	PUTBACK;
		1558	if (ix)
		1559	eval_sv (coderef, 0);
		1560	else
		1561	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1562	SPAGAIN;
		1563	FREETMPS;
		1564	LEAVE;
		1565	PUTBACK;
		1566	}
		1567
		1568	if (!(coro->flags & CF_RUNNING))
		1569	{
		1570	save_perl (aTHX_ coro);
		1571	load_perl (aTHX_ &temp);
		1572	}
		1573	}
		1574	}
		1575
		1576	SV *
		1577	is_ready (Coro::State coro)
		1578	PROTOTYPE: $
		1579	ALIAS:
		1580	is_ready = CF_READY
		1581	is_running = CF_RUNNING
		1582	is_new = CF_NEW
		1583	is_destroyed = CF_DESTROYED
		1584	CODE:
		1585	RETVAL = boolSV (coro->flags & ix);
		1586	OUTPUT:
		1587	RETVAL
		1588
		1589	void
		1590	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1591
		1592	SV *
		1593	has_stack (Coro::State coro)
		1594	PROTOTYPE: $
		1595	CODE:
		1596	RETVAL = boolSV (!!coro->cctx);
		1597	OUTPUT:
		1598	RETVAL
		1599
		1600	int
		1601	is_traced (Coro::State coro)
		1602	PROTOTYPE: $
		1603	CODE:
		1604	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1605	OUTPUT:
		1606	RETVAL
		1607
		1608	IV
		1609	rss (Coro::State coro)
		1610	PROTOTYPE: $
		1611	ALIAS:
		1612	usecount = 1
		1613	CODE:
		1614	switch (ix)
		1615	{
		1616	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1617	case 1: RETVAL = coro->usecount; break;
		1618	}
		1619	OUTPUT:
		1620	RETVAL
		1621
		1622
1277	MODULE = Coro::State PACKAGE = Coro	1623	MODULE = Coro::State PACKAGE = Coro
1278		1624
1279	BOOT:	1625	BOOT:
1280	{	1626	{
1281	int i;	1627	int i;
		1628
		1629	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1630	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1631	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1632
		1633	coro_current = get_sv ("Coro::current", FALSE);
		1634	SvREADONLY_on (coro_current);
1282		1635
1283	coro_stash = gv_stashpv ("Coro", TRUE);	1636	coro_stash = gv_stashpv ("Coro", TRUE);
1284		1637
1285	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1638	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1286	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1639	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1287	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1640	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1288	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1641	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1289	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1642	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1290	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1643	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1291		1644
1292	coro_current = get_sv ("Coro::current", FALSE);
1293	SvREADONLY_on (coro_current);
1294
1295	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1645	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1296	coro_ready[i] = newAV ();	1646	coro_ready[i] = newAV ();
1297		1647
1298	{	1648	{
1299	SV *sv = perl_get_sv("Coro::API", 1);	1649	SV *sv = perl_get_sv("Coro::API", 1);
1300		1650
1301	coroapi.schedule = api_schedule;	1651	coroapi.schedule = api_schedule;
1302	coroapi.save = api_save;
1303	coroapi.cede = api_cede;	1652	coroapi.cede = api_cede;
1304	coroapi.cede_notself = api_cede_notself;	1653	coroapi.cede_notself = api_cede_notself;
1305	coroapi.ready = api_ready;	1654	coroapi.ready = api_ready;
1306	coroapi.is_ready = api_is_ready;	1655	coroapi.is_ready = api_is_ready;
1307	coroapi.nready = &coro_nready;	1656	coroapi.nready = &coro_nready;
…		…
1348	CODE:	1697	CODE:
1349	RETVAL = boolSV (api_ready (self));	1698	RETVAL = boolSV (api_ready (self));
1350	OUTPUT:	1699	OUTPUT:
1351	RETVAL	1700	RETVAL
1352		1701
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	1702	int
1362	nready (...)	1703	nready (...)
1363	PROTOTYPE:	1704	PROTOTYPE:
1364	CODE:	1705	CODE:
1365	RETVAL = coro_nready;	1706	RETVAL = coro_nready;
1366	OUTPUT:	1707	OUTPUT:
1367	RETVAL	1708	RETVAL
1368		1709
		1710	# for async_pool speedup
		1711	void
		1712	_pool_1 (SV *cb)
		1713	CODE:
		1714	{
		1715	struct coro *coro = SvSTATE (coro_current);
		1716	HV *hv = (HV *)SvRV (coro_current);
		1717	AV *defav = GvAV (PL_defgv);
		1718	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1719	AV *invoke_av;
		1720	int i, len;
		1721
		1722	if (!invoke)
		1723	croak ("\3terminate\2\n");
		1724
		1725	SvREFCNT_dec (coro->saved_deffh);
		1726	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1727
		1728	hv_store (hv, "desc", sizeof ("desc") - 1,
		1729	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1730
		1731	invoke_av = (AV *)SvRV (invoke);
		1732	len = av_len (invoke_av);
		1733
		1734	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1735
		1736	if (len > 0)
		1737	{
		1738	av_fill (defav, len - 1);
		1739	for (i = 0; i < len; ++i)
		1740	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1741	}
		1742
		1743	SvREFCNT_dec (invoke);
		1744	}
		1745
		1746	void
		1747	_pool_2 (SV *cb)
		1748	CODE:
		1749	{
		1750	struct coro *coro = SvSTATE (coro_current);
		1751
		1752	sv_setsv (cb, &PL_sv_undef);
		1753
		1754	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1755	coro->saved_deffh = 0;
		1756
		1757	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1758	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1759	croak ("\3terminate\2\n");
		1760
		1761	av_clear (GvAV (PL_defgv));
		1762	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1763	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1764
		1765	coro->prio = 0;
		1766
		1767	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1768	api_trace (coro_current, 0);
		1769
		1770	av_push (av_async_pool, newSVsv (coro_current));
		1771	}
		1772
		1773
1369	MODULE = Coro::State PACKAGE = Coro::AIO	1774	MODULE = Coro::State PACKAGE = Coro::AIO
1370		1775
1371	SV *	1776	SV *
1372	_get_state ()	1777	_get_state ()
1373	CODE:	1778	CODE:

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