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Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.189 by root, Fri Oct 5 20:38:43 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>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
38	#endif	43	#endif
39		44
40	/* the maximum number of idle cctx that will be pooled */	45	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	46	#define MAX_IDLE_CCTX 8
42		47
…		…
71	#ifndef SvRV_set	76	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	78	#endif
74		79
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	81	# undef CORO_STACKGUARD
77	#endif	82	#endif
78		83
79	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
81	#endif	86	#endif
82		87
83	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	91	#endif
87		92
88	/* 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
89	* to the current C stack pointer. Its property is that it changes with each call	94	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
93		97
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		99
96	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
…		…
112	#else	116	#else
113	# define LOCK (void)0	117	# define LOCK (void)0
114	# define UNLOCK (void)0	118	# define UNLOCK (void)0
115	#endif	119	#endif
116		120
		121	/* helper storage struct for Coro::AIO */
117	struct io_state	122	struct io_state
118	{	123	{
119	int errorno;	124	int errorno;
120	I32 laststype;	125	I32 laststype;
121	int laststatval;	126	int laststatval;
122	Stat_t statcache;	127	Stat_t statcache;
123	};	128	};
124		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
125	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
126	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;
127	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
128	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
129		136
		137	static GV *irsgv; /* $/ */
		138	static GV *stdoutgv; /* *STDOUT */
		139
		140	/* async_pool helper stuff */
		141	static SV *sv_pool_rss;
		142	static SV *sv_pool_size;
		143	static AV *av_async_pool;
		144
130	static struct coro_cctx *cctx_first;	145	static struct coro_cctx *cctx_first;
131	static int cctx_count, cctx_idle;	146	static int cctx_count, cctx_idle;
		147
		148	enum {
		149	CC_MAPPED = 0x01,
		150	CC_NOREUSE = 0x02, /* throw this away after tracing */
		151	CC_TRACE = 0x04,
		152	CC_TRACE_SUB = 0x08, /* trace sub calls */
		153	CC_TRACE_LINE = 0x10, /* trace each statement */
		154	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		155	};
132		156
133	/* this is a structure representing a c-level coroutine */	157	/* this is a structure representing a c-level coroutine */
134	typedef struct coro_cctx {	158	typedef struct coro_cctx {
135	struct coro_cctx *next;	159	struct coro_cctx *next;
136		160
137	/* the stack */	161	/* the stack */
138	void *sptr;	162	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	163	size_t ssize;
140		164
141	/* cpu state */	165	/* cpu state */
142	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	166	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
143	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	167	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144	JMPENV *top_env;	168	JMPENV *top_env;
145	coro_context cctx;	169	coro_context cctx;
146		170
147	int inuse;
148
149	#if USE_VALGRIND	171	#if CORO_USE_VALGRIND
150	int valgrind_id;	172	int valgrind_id;
151	#endif	173	#endif
		174	unsigned char flags;
152	} coro_cctx;	175	} coro_cctx;
153		176
154	enum {	177	enum {
155	CF_RUNNING = 0x0001, /* coroutine is running */	178	CF_RUNNING = 0x0001, /* coroutine is running */
156	CF_READY = 0x0002, /* coroutine is ready */	179	CF_READY = 0x0002, /* coroutine is ready */
157	CF_NEW = 0x0004, /* ahs never been switched to */	180	CF_NEW = 0x0004, /* has never been switched to */
		181	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
158	};	182	};
159		183
160	/* this is a structure representing a perl-level coroutine */	184	/* this is a structure representing a perl-level coroutine */
161	struct coro {	185	struct coro {
162	/* the c coroutine allocated to this perl coroutine, if any */	186	/* the c coroutine allocated to this perl coroutine, if any */
163	coro_cctx *cctx;	187	coro_cctx *cctx;
164		188
165	/* data associated with this coroutine (initial args) */	189	/* data associated with this coroutine (initial args) */
166	AV *args;	190	AV *args;
167	int refcnt;	191	int refcnt;
168	int save; /* CORO_SAVE flags */
169	int flags; /* CF_ flags */	192	int flags; /* CF_ flags */
170		193
171	/* optionally saved, might be zero */	194	/* optionally saved, might be zero */
172	AV *defav; /* @_ */	195	AV *defav; /* @_ */
173	SV *defsv; /* $_ */	196	SV *defsv; /* $_ */
174	SV *errsv; /* $@ */	197	SV *errsv; /* $@ */
		198	SV *deffh; /* default filehandle */
175	SV *irssv; /* $/ */	199	SV *irssv; /* $/ */
176	SV *irssv_sv; /* real $/ cache */	200	SV *irssv_sv; /* real $/ cache */
177		201
178	#define VAR(name,type) type name;	202	#define VAR(name,type) type name;
179	# include "state.h"	203	# include "state.h"
180	#undef VAR	204	#undef VAR
181		205
		206	/* statistics */
		207	int usecount; /* number of transfers to this coro */
		208
182	/* coro process data */	209	/* coro process data */
183	int prio;	210	int prio;
		211	//SV *throw;
		212
		213	/* async_pool */
		214	SV *saved_deffh;
		215
		216	/* linked list */
		217	struct coro *next, *prev;
		218	HV *hv; /* the perl hash associated with this coro, if any */
184	};	219	};
185		220
186	typedef struct coro *Coro__State;	221	typedef struct coro *Coro__State;
187	typedef struct coro *Coro__State_or_hashref;	222	typedef struct coro *Coro__State_or_hashref;
188		223
		224	/** Coro ********************************************************************/
		225
		226	#define PRIO_MAX 3
		227	#define PRIO_HIGH 1
		228	#define PRIO_NORMAL 0
		229	#define PRIO_LOW -1
		230	#define PRIO_IDLE -3
		231	#define PRIO_MIN -4
		232
		233	/* for Coro.pm */
		234	static SV *coro_current;
		235	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		236	static int coro_nready;
		237	static struct coro *coro_first;
		238
		239	/** lowlevel stuff **********************************************************/
		240
189	static AV *	241	static AV *
190	coro_clone_padlist (CV *cv)	242	coro_clone_padlist (pTHX_ CV *cv)
191	{	243	{
192	AV *padlist = CvPADLIST (cv);	244	AV *padlist = CvPADLIST (cv);
193	AV *newpadlist, *newpad;	245	AV *newpadlist, *newpad;
194		246
195	newpadlist = newAV ();	247	newpadlist = newAV ();
…		…
207		259
208	return newpadlist;	260	return newpadlist;
209	}	261	}
210		262
211	static void	263	static void
212	free_padlist (AV *padlist)	264	free_padlist (pTHX_ AV *padlist)
213	{	265	{
214	/* may be during global destruction */	266	/* may be during global destruction */
215	if (SvREFCNT (padlist))	267	if (SvREFCNT (padlist))
216	{	268	{
217	I32 i = AvFILLp (padlist);	269	I32 i = AvFILLp (padlist);
…		…
238	AV *padlist;	290	AV *padlist;
239	AV *av = (AV *)mg->mg_obj;	291	AV *av = (AV *)mg->mg_obj;
240		292
241	/* casting is fun. */	293	/* casting is fun. */
242	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	294	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
243	free_padlist (padlist);	295	free_padlist (aTHX_ padlist);
244		296
245	SvREFCNT_dec (av);	297	SvREFCNT_dec (av);
246		298
247	return 0;	299	return 0;
248	}	300	}
…		…
256	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	308	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
257	? SvMAGIC (cv) \	309	? SvMAGIC (cv) \
258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	310	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
259	: 0	311	: 0
260		312
		313	static struct coro *
		314	SvSTATE_ (pTHX_ SV *coro)
		315	{
		316	HV *stash;
		317	MAGIC *mg;
		318
		319	if (SvROK (coro))
		320	coro = SvRV (coro);
		321
		322	if (SvTYPE (coro) != SVt_PVHV)
		323	croak ("Coro::State object required");
		324
		325	stash = SvSTASH (coro);
		326	if (stash != coro_stash && stash != coro_state_stash)
		327	{
		328	/* very slow, but rare, check */
		329	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		330	croak ("Coro::State object required");
		331	}
		332
		333	mg = CORO_MAGIC (coro);
		334	return (struct coro *)mg->mg_ptr;
		335	}
		336
		337	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		338
261	/* the next two functions merely cache the padlists */	339	/* the next two functions merely cache the padlists */
262	static void	340	static void
263	get_padlist (CV *cv)	341	get_padlist (pTHX_ CV *cv)
264	{	342	{
265	MAGIC *mg = CORO_MAGIC (cv);	343	MAGIC *mg = CORO_MAGIC (cv);
266	AV *av;	344	AV *av;
267		345
268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	346	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	347	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
270	else	348	else
271	{	349	{
272	#if PREFER_PERL_FUNCTIONS	350	#if CORO_PREFER_PERL_FUNCTIONS
273	/* this is probably cleaner, but also slower? */	351	/* this is probably cleaner, but also slower? */
274	CV *cp = Perl_cv_clone (cv);	352	CV *cp = Perl_cv_clone (cv);
275	CvPADLIST (cv) = CvPADLIST (cp);	353	CvPADLIST (cv) = CvPADLIST (cp);
276	CvPADLIST (cp) = 0;	354	CvPADLIST (cp) = 0;
277	SvREFCNT_dec (cp);	355	SvREFCNT_dec (cp);
278	#else	356	#else
279	CvPADLIST (cv) = coro_clone_padlist (cv);	357	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
280	#endif	358	#endif
281	}	359	}
282	}	360	}
283		361
284	static void	362	static void
285	put_padlist (CV *cv)	363	put_padlist (pTHX_ CV *cv)
286	{	364	{
287	MAGIC *mg = CORO_MAGIC (cv);	365	MAGIC *mg = CORO_MAGIC (cv);
288	AV *av;	366	AV *av;
289		367
290	if (!mg)	368	if (!mg)
…		…
301	av_extend (av, AvMAX (av) + 1);	379	av_extend (av, AvMAX (av) + 1);
302		380
303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	381	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
304	}	382	}
305		383
306	#define SB do {	384	/** load & save, init *******************************************************/
307	#define SE } while (0)
308		385
309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
310
311	static void	386	static void
312	load_perl (Coro__State c)	387	load_perl (pTHX_ Coro__State c)
313	{	388	{
314	#define VAR(name,type) PL_ ## name = c->name;	389	#define VAR(name,type) PL_ ## name = c->name;
315	# include "state.h"	390	# include "state.h"
316	#undef VAR	391	#undef VAR
317		392
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	393	GvSV (PL_defgv) = c->defsv;
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	394	GvAV (PL_defgv) = c->defav;
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	395	GvSV (PL_errgv) = c->errsv;
321	if (c->irssv)	396	GvSV (irsgv) = c->irssv_sv;
322	{
323	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
324	SvREFCNT_dec (c->irssv);
325	else
326	{
327	REPLACE_SV (PL_rs, c->irssv);
328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
329	sv_setsv (c->irssv_sv, PL_rs);
330	}
331	}
332		397
333	{	398	{
334	dSP;	399	dSP;
335	CV *cv;	400	CV *cv;
336		401
337	/* now do the ugly restore mess */	402	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	403	while ((cv = (CV *)POPs))
339	{	404	{
340	put_padlist (cv); /* mark this padlist as available */	405	put_padlist (aTHX_ cv); /* mark this padlist as available */
341	CvDEPTH (cv) = PTR2IV (POPs);	406	CvDEPTH (cv) = PTR2IV (POPs);
342	CvPADLIST (cv) = (AV *)POPs;	407	CvPADLIST (cv) = (AV *)POPs;
343	}	408	}
344		409
345	PUTBACK;	410	PUTBACK;
346	}	411	}
347	}	412	}
348		413
349	static void	414	static void
350	save_perl (Coro__State c)	415	save_perl (pTHX_ Coro__State c)
351	{	416	{
352	{	417	{
353	dSP;	418	dSP;
354	I32 cxix = cxstack_ix;	419	I32 cxix = cxstack_ix;
355	PERL_CONTEXT *ccstk = cxstack;	420	PERL_CONTEXT *ccstk = cxstack;
…		…
358	/*	423	/*
359	* the worst thing you can imagine happens first - we have to save	424	* the worst thing you can imagine happens first - we have to save
360	* (and reinitialize) all cv's in the whole callchain :(	425	* (and reinitialize) all cv's in the whole callchain :(
361	*/	426	*/
362		427
363	EXTEND (SP, 3 + 1);
364	PUSHs (Nullsv);	428	XPUSHs (Nullsv);
365	/* this loop was inspired by pp_caller */	429	/* this loop was inspired by pp_caller */
366	for (;;)	430	for (;;)
367	{	431	{
368	while (cxix >= 0)	432	while (cxix >= 0)
369	{	433	{
370	PERL_CONTEXT *cx = &ccstk[cxix--];	434	PERL_CONTEXT *cx = &ccstk[cxix--];
371		435
372	if (CxTYPE (cx) == CXt_SUB)	436	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
373	{	437	{
374	CV *cv = cx->blk_sub.cv;	438	CV *cv = cx->blk_sub.cv;
375		439
376	if (CvDEPTH (cv))	440	if (CvDEPTH (cv))
377	{	441	{
…		…
379	PUSHs ((SV *)CvPADLIST (cv));	443	PUSHs ((SV *)CvPADLIST (cv));
380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	444	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	445	PUSHs ((SV *)cv);
382		446
383	CvDEPTH (cv) = 0;	447	CvDEPTH (cv) = 0;
384	get_padlist (cv);	448	get_padlist (aTHX_ cv);
385	}	449	}
386	}	450	}
387	}	451	}
388		452
389	if (top_si->si_type == PERLSI_MAIN)	453	if (top_si->si_type == PERLSI_MAIN)
390	break;	454	break;
391		455
392	top_si = top_si->si_prev;	456	top_si = top_si->si_prev;
393	ccstk = top_si->si_cxstack;	457	ccstk = top_si->si_cxstack;
394	cxix = top_si->si_cxix;	458	cxix = top_si->si_cxix;
395	}	459	}
396		460
397	PUTBACK;	461	PUTBACK;
398	}	462	}
399		463
400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	464	c->defav = GvAV (PL_defgv);
401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	465	c->defsv = DEFSV;
402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	466	c->errsv = ERRSV;
403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	467	c->irssv_sv = GvSV (irsgv);
404		468
405	#define VAR(name,type)c->name = PL_ ## name;	469	#define VAR(name,type)c->name = PL_ ## name;
406	# include "state.h"	470	# include "state.h"
407	#undef VAR	471	#undef VAR
408	}	472	}
…		…
411	* allocate various perl stacks. This is an exact copy	475	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	476	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	477	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	478	* not usually need a lot of stackspace.
415	*/	479	*/
416	#if PREFER_PERL_FUNCTIONS	480	#if CORO_PREFER_PERL_FUNCTIONS
417	# define coro_init_stacks init_stacks	481	# define coro_init_stacks init_stacks
418	#else	482	#else
419	static void	483	static void
420	coro_init_stacks ()	484	coro_init_stacks (pTHX)
421	{	485	{
422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	486	PL_curstackinfo = new_stackinfo(64, 6);
423	PL_curstackinfo->si_type = PERLSI_MAIN;	487	PL_curstackinfo->si_type = PERLSI_MAIN;
424	PL_curstack = PL_curstackinfo->si_stack;	488	PL_curstack = PL_curstackinfo->si_stack;
425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	489	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
426		490
427	PL_stack_base = AvARRAY(PL_curstack);	491	PL_stack_base = AvARRAY(PL_curstack);
428	PL_stack_sp = PL_stack_base;	492	PL_stack_sp = PL_stack_base;
429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	493	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
430		494
431	New(50,PL_tmps_stack,128,SV*);	495	New(50,PL_tmps_stack,64,SV*);
432	PL_tmps_floor = -1;	496	PL_tmps_floor = -1;
433	PL_tmps_ix = -1;	497	PL_tmps_ix = -1;
434	PL_tmps_max = 128;	498	PL_tmps_max = 64;
435		499
436	New(54,PL_markstack,32,I32);	500	New(54,PL_markstack,16,I32);
437	PL_markstack_ptr = PL_markstack;	501	PL_markstack_ptr = PL_markstack;
438	PL_markstack_max = PL_markstack + 32;	502	PL_markstack_max = PL_markstack + 16;
439		503
440	#ifdef SET_MARK_OFFSET	504	#ifdef SET_MARK_OFFSET
441	SET_MARK_OFFSET;	505	SET_MARK_OFFSET;
442	#endif	506	#endif
443		507
444	New(54,PL_scopestack,32,I32);	508	New(54,PL_scopestack,16,I32);
445	PL_scopestack_ix = 0;	509	PL_scopestack_ix = 0;
446	PL_scopestack_max = 32;	510	PL_scopestack_max = 16;
447		511
448	New(54,PL_savestack,64,ANY);	512	New(54,PL_savestack,64,ANY);
449	PL_savestack_ix = 0;	513	PL_savestack_ix = 0;
450	PL_savestack_max = 64;	514	PL_savestack_max = 64;
451		515
452	#if !PERL_VERSION_ATLEAST (5,9,0)	516	#if !PERL_VERSION_ATLEAST (5,9,0)
453	New(54,PL_retstack,16,OP*);	517	New(54,PL_retstack,4,OP*);
454	PL_retstack_ix = 0;	518	PL_retstack_ix = 0;
455	PL_retstack_max = 16;	519	PL_retstack_max = 4;
456	#endif	520	#endif
457	}	521	}
458	#endif	522	#endif
459		523
460	/*	524	/*
461	* destroy the stacks, the callchain etc...	525	* destroy the stacks, the callchain etc...
462	*/	526	*/
463	static void	527	static void
464	coro_destroy_stacks ()	528	coro_destroy_stacks (pTHX)
465	{	529	{
466	if (!IN_DESTRUCT)
467	{
468	/* restore all saved variables and stuff */
469	LEAVE_SCOPE (0);
470	assert (PL_tmps_floor == -1);
471
472	/* free all temporaries */
473	FREETMPS;
474	assert (PL_tmps_ix == -1);
475
476	POPSTACK_TO (PL_mainstack);
477	}
478
479	while (PL_curstackinfo->si_next)	530	while (PL_curstackinfo->si_next)
480	PL_curstackinfo = PL_curstackinfo->si_next;	531	PL_curstackinfo = PL_curstackinfo->si_next;
481		532
482	while (PL_curstackinfo)	533	while (PL_curstackinfo)
483	{	534	{
…		…
498	#if !PERL_VERSION_ATLEAST (5,9,0)	549	#if !PERL_VERSION_ATLEAST (5,9,0)
499	Safefree (PL_retstack);	550	Safefree (PL_retstack);
500	#endif	551	#endif
501	}	552	}
502		553
503	static void	554	static size_t
504	setup_coro (struct coro *coro)	555	coro_rss (pTHX_ struct coro *coro)
		556	{
		557	size_t rss = sizeof (*coro);
		558
		559	if (coro->mainstack)
		560	{
		561	if (coro->flags & CF_RUNNING)
		562	{
		563	#define VAR(name,type)coro->name = PL_ ## name;
		564	# include "state.h"
		565	#undef VAR
		566	}
		567
		568	rss += sizeof (coro->curstackinfo);
		569	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		570	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		571	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		572	rss += coro->tmps_max * sizeof (SV *);
		573	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		574	rss += coro->scopestack_max * sizeof (I32);
		575	rss += coro->savestack_max * sizeof (ANY);
		576
		577	#if !PERL_VERSION_ATLEAST (5,9,0)
		578	rss += coro->retstack_max * sizeof (OP *);
		579	#endif
		580	}
		581
		582	return rss;
		583	}
		584
		585	/** coroutine stack handling ************************************************/
		586
		587	static void
		588	coro_setup (pTHX_ struct coro *coro)
505	{	589	{
506	/*	590	/*
507	* emulate part of the perl startup here.	591	* emulate part of the perl startup here.
508	*/	592	*/
509
510	coro_init_stacks ();	593	coro_init_stacks (aTHX);
511		594
		595	PL_runops = RUNOPS_DEFAULT;
512	PL_curcop = &PL_compiling;	596	PL_curcop = &PL_compiling;
513	PL_in_eval = EVAL_NULL;	597	PL_in_eval = EVAL_NULL;
		598	PL_comppad = 0;
514	PL_curpm = 0;	599	PL_curpm = 0;
515	PL_localizing = 0;	600	PL_localizing = 0;
516	PL_dirty = 0;	601	PL_dirty = 0;
517	PL_restartop = 0;	602	PL_restartop = 0;
		603
		604	GvSV (PL_defgv) = NEWSV (0, 0);
		605	GvAV (PL_defgv) = coro->args; coro->args = 0;
		606	GvSV (PL_errgv) = NEWSV (0, 0);
		607	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		608	PL_rs = newSVsv (GvSV (irsgv));
		609	PL_defoutgv = SvREFCNT_inc (stdoutgv);
518		610
519	{	611	{
520	dSP;	612	dSP;
521	LOGOP myop;	613	LOGOP myop;
522		614
523	SvREFCNT_dec (GvAV (PL_defgv));
524	GvAV (PL_defgv) = coro->args; coro->args = 0;
525
526	Zero (&myop, 1, LOGOP);	615	Zero (&myop, 1, LOGOP);
527	myop.op_next = Nullop;	616	myop.op_next = Nullop;
528	myop.op_flags = OPf_WANT_VOID;	617	myop.op_flags = OPf_WANT_VOID;
529		618
530	PUSHMARK (SP);	619	PUSHMARK (SP);
531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	620	XPUSHs (av_shift (GvAV (PL_defgv)));
532	PUTBACK;	621	PUTBACK;
533	PL_op = (OP *)&myop;	622	PL_op = (OP *)&myop;
534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	623	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	624	SPAGAIN;
536	}	625	}
537		626
538	ENTER; /* necessary e.g. for dounwind */	627	ENTER; /* necessary e.g. for dounwind */
539	}	628	}
540		629
541	static void	630	static void
		631	coro_destroy (pTHX_ struct coro *coro)
		632	{
		633	if (!IN_DESTRUCT)
		634	{
		635	/* restore all saved variables and stuff */
		636	LEAVE_SCOPE (0);
		637	assert (PL_tmps_floor == -1);
		638
		639	/* free all temporaries */
		640	FREETMPS;
		641	assert (PL_tmps_ix == -1);
		642
		643	/* unwind all extra stacks */
		644	POPSTACK_TO (PL_mainstack);
		645
		646	/* unwind main stack */
		647	dounwind (-1);
		648	}
		649
		650	SvREFCNT_dec (GvSV (PL_defgv));
		651	SvREFCNT_dec (GvAV (PL_defgv));
		652	SvREFCNT_dec (GvSV (PL_errgv));
		653	SvREFCNT_dec (PL_defoutgv);
		654	SvREFCNT_dec (PL_rs);
		655	SvREFCNT_dec (GvSV (irsgv));
		656
		657	SvREFCNT_dec (coro->saved_deffh);
		658	//SvREFCNT_dec (coro->throw);
		659
		660	coro_destroy_stacks (aTHX);
		661	}
		662
		663	static void
542	free_coro_mortal ()	664	free_coro_mortal (pTHX)
543	{	665	{
544	if (coro_mortal)	666	if (coro_mortal)
545	{	667	{
546	SvREFCNT_dec (coro_mortal);	668	SvREFCNT_dec (coro_mortal);
547	coro_mortal = 0;	669	coro_mortal = 0;
548	}	670	}
549	}	671	}
550		672
		673	static int
		674	runops_trace (pTHX)
		675	{
		676	COP *oldcop = 0;
		677	int oldcxix = -2;
		678	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		679	coro_cctx *cctx = coro->cctx;
		680
		681	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		682	{
		683	PERL_ASYNC_CHECK ();
		684
		685	if (cctx->flags & CC_TRACE_ALL)
		686	{
		687	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		688	{
		689	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		690	SV **bot, **top;
		691	AV *av = newAV (); /* return values */
		692	SV **cb;
		693	dSP;
		694
		695	GV *gv = CvGV (cx->blk_sub.cv);
		696	SV *fullname = sv_2mortal (newSV (0));
		697	if (isGV (gv))
		698	gv_efullname3 (fullname, gv, 0);
		699
		700	bot = PL_stack_base + cx->blk_oldsp + 1;
		701	top = cx->blk_gimme == G_ARRAY ? SP + 1
		702	: cx->blk_gimme == G_SCALAR ? bot + 1
		703	: bot;
		704
		705	while (bot < top)
		706	av_push (av, SvREFCNT_inc (*bot++));
		707
		708	PL_runops = RUNOPS_DEFAULT;
		709	ENTER;
		710	SAVETMPS;
		711	EXTEND (SP, 3);
		712	PUSHMARK (SP);
		713	PUSHs (&PL_sv_no);
		714	PUSHs (fullname);
		715	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		716	PUTBACK;
		717	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		718	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		719	SPAGAIN;
		720	FREETMPS;
		721	LEAVE;
		722	PL_runops = runops_trace;
		723	}
		724
		725	if (oldcop != PL_curcop)
		726	{
		727	oldcop = PL_curcop;
		728
		729	if (PL_curcop != &PL_compiling)
		730	{
		731	SV **cb;
		732
		733	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		734	{
		735	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		736
		737	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		738	{
		739	runops_proc_t old_runops = PL_runops;
		740	dSP;
		741	GV *gv = CvGV (cx->blk_sub.cv);
		742	SV *fullname = sv_2mortal (newSV (0));
		743
		744	if (isGV (gv))
		745	gv_efullname3 (fullname, gv, 0);
		746
		747	PL_runops = RUNOPS_DEFAULT;
		748	ENTER;
		749	SAVETMPS;
		750	EXTEND (SP, 3);
		751	PUSHMARK (SP);
		752	PUSHs (&PL_sv_yes);
		753	PUSHs (fullname);
		754	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		755	PUTBACK;
		756	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		757	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		758	SPAGAIN;
		759	FREETMPS;
		760	LEAVE;
		761	PL_runops = runops_trace;
		762	}
		763
		764	oldcxix = cxstack_ix;
		765	}
		766
		767	if (cctx->flags & CC_TRACE_LINE)
		768	{
		769	dSP;
		770
		771	PL_runops = RUNOPS_DEFAULT;
		772	ENTER;
		773	SAVETMPS;
		774	EXTEND (SP, 3);
		775	PL_runops = RUNOPS_DEFAULT;
		776	PUSHMARK (SP);
		777	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		778	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		779	PUTBACK;
		780	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		781	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		782	SPAGAIN;
		783	FREETMPS;
		784	LEAVE;
		785	PL_runops = runops_trace;
		786	}
		787	}
		788	}
		789	}
		790	}
		791
		792	TAINT_NOT;
		793	return 0;
		794	}
		795
551	/* inject a fake call to Coro::State::_cctx_init into the execution */	796	/* inject a fake call to Coro::State::_cctx_init into the execution */
		797	/* _cctx_init should be careful, as it could be called at almost any time */
		798	/* during execution of a perl program */
552	static void NOINLINE	799	static void NOINLINE
553	prepare_cctx (coro_cctx *cctx)	800	prepare_cctx (pTHX_ coro_cctx *cctx)
554	{	801	{
555	dSP;	802	dSP;
556	LOGOP myop;	803	LOGOP myop;
		804
		805	PL_top_env = &PL_start_env;
		806
		807	if (cctx->flags & CC_TRACE)
		808	PL_runops = runops_trace;
557		809
558	Zero (&myop, 1, LOGOP);	810	Zero (&myop, 1, LOGOP);
559	myop.op_next = PL_op;	811	myop.op_next = PL_op;
560	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	812	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
561		813
…		…
567	PL_op = (OP *)&myop;	819	PL_op = (OP *)&myop;
568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	820	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
569	SPAGAIN;	821	SPAGAIN;
570	}	822	}
571		823
		824	/*
		825	* this is a _very_ stripped down perl interpreter ;)
		826	*/
572	static void	827	static void
573	coro_run (void *arg)	828	coro_run (void *arg)
574	{	829	{
		830	dTHX;
		831
575	/* coro_run is the alternative tail of transfer(), so unlock here. */	832	/* coro_run is the alternative tail of transfer(), so unlock here. */
576	UNLOCK;	833	UNLOCK;
577		834
578	/*	835	/* we now skip the entersub that lead to transfer() */
579	* this is a _very_ stripped down perl interpreter ;)	836	PL_op = PL_op->op_next;
580	*/
581	PL_top_env = &PL_start_env;
582		837
583	/* inject call to cctx_init */	838	/* inject a fake subroutine call to cctx_init */
584	prepare_cctx ((coro_cctx *)arg);	839	prepare_cctx (aTHX_ (coro_cctx *)arg);
585		840
586	/* somebody will hit me for both perl_run and PL_restartop */	841	/* somebody or something will hit me for both perl_run and PL_restartop */
587	PL_restartop = PL_op;	842	PL_restartop = PL_op;
588	perl_run (PL_curinterp);	843	perl_run (PL_curinterp);
589		844
590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	845	/*
591	abort ();	846	* If perl-run returns we assume exit() was being called or the coro
		847	* fell off the end, which seems to be the only valid (non-bug)
		848	* reason for perl_run to return. We try to exit by jumping to the
		849	* bootstrap-time "top" top_env, as we cannot restore the "main"
		850	* coroutine as Coro has no such concept
		851	*/
		852	PL_top_env = main_top_env;
		853	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
592	}	854	}
593		855
594	static coro_cctx *	856	static coro_cctx *
595	cctx_new ()	857	cctx_new ()
596	{	858	{
597	coro_cctx *cctx;	859	coro_cctx *cctx;
		860	void *stack_start;
		861	size_t stack_size;
598		862
599	++cctx_count;	863	++cctx_count;
600		864
601	Newz (0, cctx, 1, coro_cctx);	865	Newz (0, cctx, 1, coro_cctx);
602		866
603	#if HAVE_MMAP	867	#if HAVE_MMAP
604		868
605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	869	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
606	/* mmap supposedly does allocate-on-write for us */	870	/* mmap supposedly does allocate-on-write for us */
607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	871	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
608		872
609	if (cctx->sptr == (void *)-1)	873	if (cctx->sptr != (void *)-1)
610	{
611	perror ("FATAL: unable to mmap stack for coroutine");
612	_exit (EXIT_FAILURE);
613	}	874	{
614
615	# if STACKGUARD	875	# if CORO_STACKGUARD
616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	876	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
617	# endif	877	# endif
		878	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		879	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		880	cctx->flags |= CC_MAPPED;
		881	}
		882	else
		883	#endif
		884	{
		885	cctx->ssize = coro_stacksize * (long)sizeof (long);
		886	New (0, cctx->sptr, coro_stacksize, long);
618		887
619	#else
620
621	cctx->ssize = STACKSIZE * (long)sizeof (long);
622	New (0, cctx->sptr, STACKSIZE, long);
623
624	if (!cctx->sptr)	888	if (!cctx->sptr)
625	{	889	{
626	perror ("FATAL: unable to malloc stack for coroutine");	890	perror ("FATAL: unable to allocate stack for coroutine");
627	_exit (EXIT_FAILURE);	891	_exit (EXIT_FAILURE);
628	}	892	}
629		893
630	#endif	894	stack_start = cctx->sptr;
		895	stack_size = cctx->ssize;
		896	}
631		897
632	#if USE_VALGRIND	898	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
633	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
634	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
635	cctx->ssize + (char *)cctx->sptr
636	);
637	#endif
638
639	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	899	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
640		900
641	return cctx;	901	return cctx;
642	}	902	}
643		903
644	static void	904	static void
…		…
647	if (!cctx)	907	if (!cctx)
648	return;	908	return;
649		909
650	--cctx_count;	910	--cctx_count;
651		911
652	#if USE_VALGRIND	912	#if CORO_USE_VALGRIND
653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	913	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
654	#endif	914	#endif
655		915
656	#if HAVE_MMAP	916	#if HAVE_MMAP
		917	if (cctx->flags & CC_MAPPED)
657	munmap (cctx->sptr, cctx->ssize);	918	munmap (cctx->sptr, cctx->ssize);
658	#else	919	else
		920	#endif
659	Safefree (cctx->sptr);	921	Safefree (cctx->sptr);
660	#endif
661		922
662	Safefree (cctx);	923	Safefree (cctx);
663	}	924	}
664		925
665	static coro_cctx *	926	static coro_cctx *
666	cctx_get ()	927	cctx_get (pTHX)
667	{	928	{
668	coro_cctx *cctx;
669
670	if (cctx_first)	929	while (cctx_first)
671	{	930	{
672	cctx = cctx_first;	931	coro_cctx *cctx = cctx_first;
673	cctx_first = cctx->next;	932	cctx_first = cctx->next;
674	--cctx_idle;	933	--cctx_idle;
675	}	934
676	else	935	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
677	{	936	return cctx;
678	cctx = cctx_new ();	937
679	PL_op = PL_op->op_next;	938	cctx_destroy (cctx);
680	}	939	}
681		940
682	return cctx;	941	return cctx_new ();
683	}	942	}
684		943
685	static void	944	static void
686	cctx_put (coro_cctx *cctx)	945	cctx_put (coro_cctx *cctx)
687	{	946	{
…		…
690	{	949	{
691	coro_cctx *first = cctx_first;	950	coro_cctx *first = cctx_first;
692	cctx_first = first->next;	951	cctx_first = first->next;
693	--cctx_idle;	952	--cctx_idle;
694		953
695	assert (!first->inuse);
696	cctx_destroy (first);	954	cctx_destroy (first);
697	}	955	}
698		956
699	++cctx_idle;	957	++cctx_idle;
700	cctx->next = cctx_first;	958	cctx->next = cctx_first;
701	cctx_first = cctx;	959	cctx_first = cctx;
702	}	960	}
703		961
704	/* never call directly, always through the coro_state_transfer global variable */	962	/** coroutine switching *****************************************************/
		963
705	static void NOINLINE	964	static void NOINLINE
		965	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		966	{
		967	if (prev != next)
		968	{
		969	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		970	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		971
		972	if (next->flags & CF_RUNNING)
		973	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		974
		975	if (next->flags & CF_DESTROYED)
		976	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		977
		978	if (PL_lex_state != LEX_NOTPARSING)
		979	croak ("Coro::State::transfer called while parsing, but this is not supported");
		980	}
		981	}
		982
		983	/* always use the TRANSFER macro */
		984	static void NOINLINE
706	transfer (struct coro *prev, struct coro *next)	985	transfer (pTHX_ struct coro *prev, struct coro *next)
707	{	986	{
708	dSTACKLEVEL;	987	dSTACKLEVEL;
709		988
710	/* sometimes transfer is only called to set idle_sp */	989	/* sometimes transfer is only called to set idle_sp */
711	if (!next)	990	if (!next)
…		…
719		998
720	if (prev->flags & CF_NEW)	999	if (prev->flags & CF_NEW)
721	{	1000	{
722	/* create a new empty context */	1001	/* create a new empty context */
723	Newz (0, prev->cctx, 1, coro_cctx);	1002	Newz (0, prev->cctx, 1, coro_cctx);
724	prev->cctx->inuse = 1;
725	prev->flags &= ~CF_NEW;	1003	prev->flags &= ~CF_NEW;
726	prev->flags |= CF_RUNNING;	1004	prev->flags |= CF_RUNNING;
727	}	1005	}
728
729	/*TODO: must not croak here */
730	if (!prev->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
732
733	if (next->flags & CF_RUNNING)
734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
735		1006
736	prev->flags &= ~CF_RUNNING;	1007	prev->flags &= ~CF_RUNNING;
737	next->flags |= CF_RUNNING;	1008	next->flags |= CF_RUNNING;
738		1009
739	LOCK;	1010	LOCK;
…		…
741	if (next->flags & CF_NEW)	1012	if (next->flags & CF_NEW)
742	{	1013	{
743	/* need to start coroutine */	1014	/* need to start coroutine */
744	next->flags &= ~CF_NEW;	1015	next->flags &= ~CF_NEW;
745	/* first get rid of the old state */	1016	/* first get rid of the old state */
746	save_perl (prev);	1017	save_perl (aTHX_ prev);
747	/* setup coroutine call */	1018	/* setup coroutine call */
748	setup_coro (next);	1019	coro_setup (aTHX_ next);
749	/* need a new stack */
750	assert (!next->cctx);
751	}	1020	}
752	else	1021	else
753	{	1022	{
754	/* coroutine already started */	1023	/* coroutine already started */
755	save_perl (prev);	1024	save_perl (aTHX_ prev);
756	load_perl (next);	1025	load_perl (aTHX_ next);
757	}	1026	}
758		1027
759	prev__cctx = prev->cctx;	1028	prev__cctx = prev->cctx;
760		1029
761	/* possibly "free" the cctx */	1030	/* possibly "free" the cctx */
762	if (prev__cctx->idle_sp == STACKLEVEL)	1031	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
763	{	1032	{
764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1033	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1034	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
766		1035
767	prev->cctx = 0;	1036	prev->cctx = 0;
768		1037
769	cctx_put (prev__cctx);	1038	cctx_put (prev__cctx);
770	prev__cctx->inuse = 0;
771	}	1039	}
772		1040
		1041	++next->usecount;
		1042
773	if (!next->cctx)	1043	if (!next->cctx)
774	{
775	next->cctx = cctx_get ();	1044	next->cctx = cctx_get (aTHX);
776	assert (!next->cctx->inuse);
777	next->cctx->inuse = 1;
778	}
779		1045
780	if (prev__cctx != next->cctx)	1046	if (prev__cctx != next->cctx)
781	{	1047	{
782	prev__cctx->top_env = PL_top_env;	1048	prev__cctx->top_env = PL_top_env;
783	PL_top_env = next->cctx->top_env;	1049	PL_top_env = next->cctx->top_env;
784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1050	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
785	}	1051	}
786		1052
787	free_coro_mortal ();	1053	free_coro_mortal (aTHX);
788
789	UNLOCK;	1054	UNLOCK;
790	}	1055	}
791	}	1056	}
792		1057
793	struct transfer_args	1058	struct transfer_args
794	{	1059	{
795	struct coro *prev, *next;	1060	struct coro *prev, *next;
796	};	1061	};
797		1062
798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1063	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1064	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
799		1065
		1066	/** high level stuff ********************************************************/
		1067
800	static void	1068	static int
801	coro_state_destroy (struct coro *coro)	1069	coro_state_destroy (pTHX_ struct coro *coro)
802	{	1070	{
803	if (coro->refcnt--)	1071	if (coro->flags & CF_DESTROYED)
804	return;	1072	return 0;
		1073
		1074	coro->flags |= CF_DESTROYED;
		1075
		1076	if (coro->flags & CF_READY)
		1077	{
		1078	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1079	/* alternative: look through all ready queues and remove the coro */
		1080	LOCK;
		1081	--coro_nready;
		1082	UNLOCK;
		1083	}
		1084	else
		1085	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
805		1086
806	if (coro->mainstack && coro->mainstack != main_mainstack)	1087	if (coro->mainstack && coro->mainstack != main_mainstack)
807	{	1088	{
808	struct coro temp;	1089	struct coro temp;
809	Zero (&temp, 1, struct coro);
810	temp.save = CORO_SAVE_ALL;
811		1090
812	if (coro->flags & CF_RUNNING)	1091	if (coro->flags & CF_RUNNING)
813	croak ("FATAL: tried to destroy currently running coroutine");	1092	croak ("FATAL: tried to destroy currently running coroutine");
814		1093
815	save_perl (&temp);	1094	save_perl (aTHX_ &temp);
816	load_perl (coro);	1095	load_perl (aTHX_ coro);
817		1096
818	coro_destroy_stacks ();	1097	coro_destroy (aTHX_ coro);
819		1098
820	load_perl (&temp); /* this will get rid of defsv etc.. */	1099	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
821		1100
822	coro->mainstack = 0;	1101	coro->mainstack = 0;
823	}	1102	}
824		1103
825	cctx_destroy (coro->cctx);	1104	cctx_destroy (coro->cctx);
826	SvREFCNT_dec (coro->args);	1105	SvREFCNT_dec (coro->args);
827	Safefree (coro);	1106
		1107	if (coro->next) coro->next->prev = coro->prev;
		1108	if (coro->prev) coro->prev->next = coro->next;
		1109	if (coro == coro_first) coro_first = coro->next;
		1110
		1111	return 1;
828	}	1112	}
829		1113
830	static int	1114	static int
831	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1115	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
832	{	1116	{
833	struct coro *coro = (struct coro *)mg->mg_ptr;	1117	struct coro *coro = (struct coro *)mg->mg_ptr;
834	mg->mg_ptr = 0;	1118	mg->mg_ptr = 0;
835		1119
		1120	coro->hv = 0;
		1121
		1122	if (--coro->refcnt < 0)
		1123	{
836	coro_state_destroy (coro);	1124	coro_state_destroy (aTHX_ coro);
		1125	Safefree (coro);
		1126	}
837		1127
838	return 0;	1128	return 0;
839	}	1129	}
840		1130
841	static int	1131	static int
…		…
848	return 0;	1138	return 0;
849	}	1139	}
850		1140
851	static MGVTBL coro_state_vtbl = {	1141	static MGVTBL coro_state_vtbl = {
852	0, 0, 0, 0,	1142	0, 0, 0, 0,
853	coro_state_clear,	1143	coro_state_free,
854	0,	1144	0,
855	#ifdef MGf_DUP	1145	#ifdef MGf_DUP
856	coro_state_dup,	1146	coro_state_dup,
857	#else	1147	#else
858	# define MGf_DUP 0	1148	# define MGf_DUP 0
859	#endif	1149	#endif
860	};	1150	};
861		1151
862	static struct coro *
863	SvSTATE (SV *coro)
864	{
865	HV *stash;
866	MAGIC *mg;
867
868	if (SvROK (coro))
869	coro = SvRV (coro);
870
871	stash = SvSTASH (coro);
872	if (stash != coro_stash && stash != coro_state_stash)
873	{
874	/* very slow, but rare, check */
875	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
876	croak ("Coro::State object required");
877	}
878
879	mg = SvMAGIC (coro);
880	assert (mg->mg_type == PERL_MAGIC_ext);
881	return (struct coro *)mg->mg_ptr;
882	}
883
884	static void	1152	static void
885	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1153	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
886	{	1154	{
887	ta->prev = SvSTATE (prev_sv);	1155	ta->prev = SvSTATE (prev_sv);
888	ta->next = SvSTATE (next_sv);	1156	ta->next = SvSTATE (next_sv);
		1157	TRANSFER_CHECK (*ta);
889	}	1158	}
890		1159
891	static void	1160	static void
892	api_transfer (SV *prev_sv, SV *next_sv)	1161	api_transfer (SV *prev_sv, SV *next_sv)
893	{	1162	{
		1163	dTHX;
894	struct transfer_args ta;	1164	struct transfer_args ta;
895		1165
896	prepare_transfer (&ta, prev_sv, next_sv);	1166	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
897	TRANSFER (ta);	1167	TRANSFER (ta);
898	}	1168	}
899		1169
900	static int
901	api_save (SV *coro_sv, int new_save)
902	{
903	struct coro *coro = SvSTATE (coro_sv);
904	int old_save = coro->save;
905
906	if (new_save >= 0)
907	coro->save = new_save;
908
909	return old_save;
910	}
911
912	/** Coro ********************************************************************/	1170	/** Coro ********************************************************************/
913		1171
914	#define PRIO_MAX 3
915	#define PRIO_HIGH 1
916	#define PRIO_NORMAL 0
917	#define PRIO_LOW -1
918	#define PRIO_IDLE -3
919	#define PRIO_MIN -4
920
921	/* for Coro.pm */
922	static SV *coro_current;
923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
924	static int coro_nready;
925
926	static void	1172	static void
927	coro_enq (SV *coro_sv)	1173	coro_enq (pTHX_ SV *coro_sv)
928	{	1174	{
929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1175	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
930	coro_nready++;
931	}	1176	}
932		1177
933	static SV *	1178	static SV *
934	coro_deq (int min_prio)	1179	coro_deq (pTHX_ int min_prio)
935	{	1180	{
936	int prio = PRIO_MAX - PRIO_MIN;	1181	int prio = PRIO_MAX - PRIO_MIN;
937		1182
938	min_prio -= PRIO_MIN;	1183	min_prio -= PRIO_MIN;
939	if (min_prio < 0)	1184	if (min_prio < 0)
940	min_prio = 0;	1185	min_prio = 0;
941		1186
942	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1187	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
943	if (AvFILLp (coro_ready [prio]) >= 0)	1188	if (AvFILLp (coro_ready [prio]) >= 0)
944	{
945	coro_nready--;
946	return av_shift (coro_ready [prio]);	1189	return av_shift (coro_ready [prio]);
947	}
948		1190
949	return 0;	1191	return 0;
950	}	1192	}
951		1193
952	static int	1194	static int
953	api_ready (SV *coro_sv)	1195	api_ready (SV *coro_sv)
954	{	1196	{
		1197	dTHX;
955	struct coro *coro;	1198	struct coro *coro;
956		1199
957	if (SvROK (coro_sv))	1200	if (SvROK (coro_sv))
958	coro_sv = SvRV (coro_sv);	1201	coro_sv = SvRV (coro_sv);
959		1202
…		…
963	return 0;	1206	return 0;
964		1207
965	coro->flags |= CF_READY;	1208	coro->flags |= CF_READY;
966		1209
967	LOCK;	1210	LOCK;
968	coro_enq (SvREFCNT_inc (coro_sv));	1211	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1212	++coro_nready;
969	UNLOCK;	1213	UNLOCK;
970		1214
971	return 1;	1215	return 1;
972	}	1216	}
973		1217
974	static int	1218	static int
975	api_is_ready (SV *coro_sv)	1219	api_is_ready (SV *coro_sv)
976	{	1220	{
		1221	dTHX;
977	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1222	return !!(SvSTATE (coro_sv)->flags & CF_READY);
978	}	1223	}
979		1224
980	static void	1225	static void
981	prepare_schedule (struct transfer_args *ta)	1226	prepare_schedule (pTHX_ struct transfer_args *ta)
982	{	1227	{
983	SV *prev, *next;	1228	SV *prev_sv, *next_sv;
984		1229
985	for (;;)	1230	for (;;)
986	{	1231	{
987	LOCK;	1232	LOCK;
988	next = coro_deq (PRIO_MIN);	1233	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1234
		1235	/* nothing to schedule: call the idle handler */
		1236	if (!next_sv)
		1237	{
		1238	dSP;
		1239	UNLOCK;
		1240
		1241	ENTER;
		1242	SAVETMPS;
		1243
		1244	PUSHMARK (SP);
		1245	PUTBACK;
		1246	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1247
		1248	FREETMPS;
		1249	LEAVE;
		1250	continue;
		1251	}
		1252
		1253	ta->next = SvSTATE (next_sv);
		1254
		1255	/* cannot transfer to destroyed coros, skip and look for next */
		1256	if (ta->next->flags & CF_DESTROYED)
		1257	{
		1258	UNLOCK;
		1259	SvREFCNT_dec (next_sv);
		1260	/* coro_nready is already taken care of by destroy */
		1261	continue;
		1262	}
		1263
		1264	--coro_nready;
989	UNLOCK;	1265	UNLOCK;
990
991	if (next)
992	break;	1266	break;
993
994	{
995	dSP;
996
997	ENTER;
998	SAVETMPS;
999
1000	PUSHMARK (SP);
1001	PUTBACK;
1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1003
1004	FREETMPS;
1005	LEAVE;
1006	}	1267	}
1007	}
1008
1009	prev = SvRV (coro_current);
1010	SvRV_set (coro_current, next);
1011		1268
1012	/* free this only after the transfer */	1269	/* free this only after the transfer */
1013	LOCK;	1270	prev_sv = SvRV (coro_current);
1014	free_coro_mortal ();
1015	UNLOCK;
1016	coro_mortal = prev;
1017
1018	assert (!SvROK(prev));//D
1019	assert (!SvROK(next));//D
1020
1021	ta->prev = SvSTATE (prev);	1271	ta->prev = SvSTATE (prev_sv);
1022	ta->next = SvSTATE (next);	1272	TRANSFER_CHECK (*ta);
1023
1024	assert (ta->next->flags & CF_READY);	1273	assert (ta->next->flags & CF_READY);
1025	ta->next->flags &= ~CF_READY;	1274	ta->next->flags &= ~CF_READY;
1026	}	1275	SvRV_set (coro_current, next_sv);
1027		1276
		1277	LOCK;
		1278	free_coro_mortal (aTHX);
		1279	coro_mortal = prev_sv;
		1280	UNLOCK;
		1281	}
		1282
1028	static void	1283	static void
1029	prepare_cede (struct transfer_args *ta)	1284	prepare_cede (pTHX_ struct transfer_args *ta)
1030	{	1285	{
1031	api_ready (coro_current);	1286	api_ready (coro_current);
1032	prepare_schedule (ta);	1287	prepare_schedule (aTHX_ ta);
1033	}	1288	}
1034		1289
1035	static int	1290	static int
1036	prepare_cede_notself (struct transfer_args *ta)	1291	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1037	{	1292	{
1038	if (coro_nready)	1293	if (coro_nready)
1039	{	1294	{
1040	SV *prev = SvRV (coro_current);	1295	SV *prev = SvRV (coro_current);
1041	prepare_schedule (ta);	1296	prepare_schedule (aTHX_ ta);
1042	api_ready (prev);	1297	api_ready (prev);
1043	return 1;	1298	return 1;
1044	}	1299	}
1045	else	1300	else
1046	return 0;	1301	return 0;
1047	}	1302	}
1048		1303
1049	static void	1304	static void
1050	api_schedule (void)	1305	api_schedule (void)
1051	{	1306	{
		1307	dTHX;
1052	struct transfer_args ta;	1308	struct transfer_args ta;
1053		1309
1054	prepare_schedule (&ta);	1310	prepare_schedule (aTHX_ &ta);
1055	TRANSFER (ta);	1311	TRANSFER (ta);
1056	}	1312	}
1057		1313
1058	static int	1314	static int
1059	api_cede (void)	1315	api_cede (void)
1060	{	1316	{
		1317	dTHX;
1061	struct transfer_args ta;	1318	struct transfer_args ta;
1062		1319
1063	prepare_cede (&ta);	1320	prepare_cede (aTHX_ &ta);
1064		1321
1065	if (ta.prev != ta.next)	1322	if (ta.prev != ta.next)
1066	{	1323	{
1067	TRANSFER (ta);	1324	TRANSFER (ta);
1068	return 1;	1325	return 1;
…		…
1072	}	1329	}
1073		1330
1074	static int	1331	static int
1075	api_cede_notself (void)	1332	api_cede_notself (void)
1076	{	1333	{
		1334	dTHX;
1077	struct transfer_args ta;	1335	struct transfer_args ta;
1078		1336
1079	if (prepare_cede_notself (&ta))	1337	if (prepare_cede_notself (aTHX_ &ta))
1080	{	1338	{
1081	TRANSFER (ta);	1339	TRANSFER (ta);
1082	return 1;	1340	return 1;
1083	}	1341	}
1084	else	1342	else
1085	return 0;	1343	return 0;
1086	}	1344	}
1087		1345
		1346	static void
		1347	api_trace (SV *coro_sv, int flags)
		1348	{
		1349	dTHX;
		1350	struct coro *coro = SvSTATE (coro_sv);
		1351
		1352	if (flags & CC_TRACE)
		1353	{
		1354	if (!coro->cctx)
		1355	coro->cctx = cctx_new ();
		1356	else if (!(coro->cctx->flags & CC_TRACE))
		1357	croak ("cannot enable tracing on coroutine with custom stack");
		1358
		1359	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1360	}
		1361	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1362	{
		1363	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1364
		1365	if (coro->flags & CF_RUNNING)
		1366	PL_runops = RUNOPS_DEFAULT;
		1367	else
		1368	coro->runops = RUNOPS_DEFAULT;
		1369	}
		1370	}
		1371
1088	MODULE = Coro::State PACKAGE = Coro::State	1372	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1089		1373
1090	PROTOTYPES: DISABLE	1374	PROTOTYPES: DISABLE
1091		1375
1092	BOOT:	1376	BOOT:
1093	{	1377	{
1094	#ifdef USE_ITHREADS	1378	#ifdef USE_ITHREADS
1095	MUTEX_INIT (&coro_mutex);	1379	MUTEX_INIT (&coro_mutex);
1096	#endif	1380	#endif
1097	BOOT_PAGESIZE;	1381	BOOT_PAGESIZE;
1098		1382
		1383	irsgv = gv_fetchpv ("/" , GV_ADD, SVt_PV);
		1384	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD, SVt_PVIO);
		1385
1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1386	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1100		1387
		1388	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1389	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1390	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1391	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1106		1392
1107	main_mainstack = PL_mainstack;	1393	main_mainstack = PL_mainstack;
		1394	main_top_env = PL_top_env;
		1395
		1396	while (main_top_env->je_prev)
		1397	main_top_env = main_top_env->je_prev;
1108		1398
1109	coroapi.ver = CORO_API_VERSION;	1399	coroapi.ver = CORO_API_VERSION;
1110	coroapi.transfer = api_transfer;	1400	coroapi.transfer = api_transfer;
1111		1401
1112	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1402	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1119	struct coro *coro;	1409	struct coro *coro;
1120	HV *hv;	1410	HV *hv;
1121	int i;	1411	int i;
1122		1412
1123	Newz (0, coro, 1, struct coro);	1413	Newz (0, coro, 1, struct coro);
1124	coro->args = newAV ();	1414	coro->args = newAV ();
1125	coro->save = CORO_SAVE_ALL;
1126	coro->flags = CF_NEW;	1415	coro->flags = CF_NEW;
1127		1416
		1417	if (coro_first) coro_first->prev = coro;
		1418	coro->next = coro_first;
		1419	coro_first = coro;
		1420
1128	hv = newHV ();	1421	coro->hv = hv = newHV ();
1129	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1422	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1423	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1131		1424
1132	for (i = 1; i < items; i++)	1425	for (i = 1; i < items; i++)
1133	av_push (coro->args, newSVsv (ST (i)));	1426	av_push (coro->args, newSVsv (ST (i)));
1134	}	1427	}
1135	OUTPUT:	1428	OUTPUT:
1136	RETVAL	1429	RETVAL
1137		1430
1138	int	1431	# these not obviously related functions are all rolled into the same xs
1139	save (SV *coro, int new_save = -1)	1432	# function to increase chances that they all will call transfer with the same
1140	CODE:	1433	# stack offset
1141	RETVAL = api_save (coro, new_save);
1142	OUTPUT:
1143	RETVAL
1144
1145	void	1434	void
1146	_set_stacklevel (...)	1435	_set_stacklevel (...)
1147	ALIAS:	1436	ALIAS:
1148	Coro::State::transfer = 1	1437	Coro::State::transfer = 1
1149	Coro::schedule = 2	1438	Coro::schedule = 2
…		…
1162		1451
1163	case 1:	1452	case 1:
1164	if (items != 2)	1453	if (items != 2)
1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1454	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1166		1455
1167	prepare_transfer (&ta, ST (0), ST (1));	1456	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1168	break;	1457	break;
1169		1458
1170	case 2:	1459	case 2:
1171	prepare_schedule (&ta);	1460	prepare_schedule (aTHX_ &ta);
1172	break;	1461	break;
1173		1462
1174	case 3:	1463	case 3:
1175	prepare_cede (&ta);	1464	prepare_cede (aTHX_ &ta);
1176	break;	1465	break;
1177		1466
1178	case 4:	1467	case 4:
1179	if (!prepare_cede_notself (&ta))	1468	if (!prepare_cede_notself (aTHX_ &ta))
1180	XSRETURN_EMPTY;	1469	XSRETURN_EMPTY;
1181		1470
1182	break;	1471	break;
1183	}	1472	}
1184		1473
1185	BARRIER;	1474	BARRIER;
1186	TRANSFER (ta);	1475	TRANSFER (ta);
1187	}
1188		1476
1189	void	1477	if (GIMME_V != G_VOID && ta.next != ta.prev)
1190	_clone_state_from (SV *dst, SV *src)	1478	XSRETURN_YES;
		1479	}
		1480
		1481	bool
		1482	_destroy (SV *coro_sv)
1191	CODE:	1483	CODE:
1192	{	1484	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1193	struct coro *coro_src = SvSTATE (src);	1485	OUTPUT:
1194		1486	RETVAL
1195	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1196
1197	++coro_src->refcnt;
1198	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1199	}
1200		1487
1201	void	1488	void
1202	_exit (code)	1489	_exit (code)
1203	int code	1490	int code
1204	PROTOTYPE: $	1491	PROTOTYPE: $
1205	CODE:	1492	CODE:
1206	_exit (code);	1493	_exit (code);
1207		1494
1208	int	1495	int
		1496	cctx_stacksize (int new_stacksize = 0)
		1497	CODE:
		1498	RETVAL = coro_stacksize;
		1499	if (new_stacksize)
		1500	coro_stacksize = new_stacksize;
		1501	OUTPUT:
		1502	RETVAL
		1503
		1504	int
1209	cctx_count ()	1505	cctx_count ()
1210	CODE:	1506	CODE:
1211	RETVAL = cctx_count;	1507	RETVAL = cctx_count;
1212	OUTPUT:	1508	OUTPUT:
1213	RETVAL	1509	RETVAL
…		…
1217	CODE:	1513	CODE:
1218	RETVAL = cctx_idle;	1514	RETVAL = cctx_idle;
1219	OUTPUT:	1515	OUTPUT:
1220	RETVAL	1516	RETVAL
1221		1517
		1518	void
		1519	list ()
		1520	PPCODE:
		1521	{
		1522	struct coro *coro;
		1523	for (coro = coro_first; coro; coro = coro->next)
		1524	if (coro->hv)
		1525	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1526	}
		1527
		1528	void
		1529	call (Coro::State coro, SV *coderef)
		1530	ALIAS:
		1531	eval = 1
		1532	CODE:
		1533	{
		1534	if (coro->mainstack)
		1535	{
		1536	struct coro temp;
		1537	Zero (&temp, 1, struct coro);
		1538
		1539	if (!(coro->flags & CF_RUNNING))
		1540	{
		1541	save_perl (aTHX_ &temp);
		1542	load_perl (aTHX_ coro);
		1543	}
		1544
		1545	{
		1546	dSP;
		1547	ENTER;
		1548	SAVETMPS;
		1549	PUSHMARK (SP);
		1550	PUTBACK;
		1551	if (ix)
		1552	eval_sv (coderef, 0);
		1553	else
		1554	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1555	SPAGAIN;
		1556	FREETMPS;
		1557	LEAVE;
		1558	PUTBACK;
		1559	}
		1560
		1561	if (!(coro->flags & CF_RUNNING))
		1562	{
		1563	save_perl (aTHX_ coro);
		1564	load_perl (aTHX_ &temp);
		1565	}
		1566	}
		1567	}
		1568
		1569	SV *
		1570	is_ready (Coro::State coro)
		1571	PROTOTYPE: $
		1572	ALIAS:
		1573	is_ready = CF_READY
		1574	is_running = CF_RUNNING
		1575	is_new = CF_NEW
		1576	is_destroyed = CF_DESTROYED
		1577	CODE:
		1578	RETVAL = boolSV (coro->flags & ix);
		1579	OUTPUT:
		1580	RETVAL
		1581
		1582	void
		1583	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1584
		1585	SV *
		1586	has_stack (Coro::State coro)
		1587	PROTOTYPE: $
		1588	CODE:
		1589	RETVAL = boolSV (!!coro->cctx);
		1590	OUTPUT:
		1591	RETVAL
		1592
		1593	int
		1594	is_traced (Coro::State coro)
		1595	PROTOTYPE: $
		1596	CODE:
		1597	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1598	OUTPUT:
		1599	RETVAL
		1600
		1601	IV
		1602	rss (Coro::State coro)
		1603	PROTOTYPE: $
		1604	ALIAS:
		1605	usecount = 1
		1606	CODE:
		1607	switch (ix)
		1608	{
		1609	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1610	case 1: RETVAL = coro->usecount; break;
		1611	}
		1612	OUTPUT:
		1613	RETVAL
		1614
		1615
1222	MODULE = Coro::State PACKAGE = Coro	1616	MODULE = Coro::State PACKAGE = Coro
1223		1617
1224	BOOT:	1618	BOOT:
1225	{	1619	{
1226	int i;	1620	int i;
		1621
		1622	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1623	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1624	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1625
		1626	coro_current = get_sv ("Coro::current", FALSE);
		1627	SvREADONLY_on (coro_current);
1227		1628
1228	coro_stash = gv_stashpv ("Coro", TRUE);	1629	coro_stash = gv_stashpv ("Coro", TRUE);
1229		1630
1230	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1631	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1231	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1632	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1633	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1634	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1635	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1636	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1236		1637
1237	coro_current = get_sv ("Coro::current", FALSE);
1238	SvREADONLY_on (coro_current);
1239
1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1638	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1241	coro_ready[i] = newAV ();	1639	coro_ready[i] = newAV ();
1242		1640
1243	{	1641	{
1244	SV *sv = perl_get_sv("Coro::API", 1);	1642	SV *sv = perl_get_sv("Coro::API", 1);
1245		1643
1246	coroapi.schedule = api_schedule;	1644	coroapi.schedule = api_schedule;
1247	coroapi.save = api_save;
1248	coroapi.cede = api_cede;	1645	coroapi.cede = api_cede;
1249	coroapi.cede_notself = api_cede_notself;	1646	coroapi.cede_notself = api_cede_notself;
1250	coroapi.ready = api_ready;	1647	coroapi.ready = api_ready;
1251	coroapi.is_ready = api_is_ready;	1648	coroapi.is_ready = api_is_ready;
1252	coroapi.nready = &coro_nready;	1649	coroapi.nready = &coro_nready;
…		…
1293	CODE:	1690	CODE:
1294	RETVAL = boolSV (api_ready (self));	1691	RETVAL = boolSV (api_ready (self));
1295	OUTPUT:	1692	OUTPUT:
1296	RETVAL	1693	RETVAL
1297		1694
1298	SV *
1299	is_ready (SV *self)
1300	PROTOTYPE: $
1301	CODE:
1302	RETVAL = boolSV (api_is_ready (self));
1303	OUTPUT:
1304	RETVAL
1305
1306	int	1695	int
1307	nready (...)	1696	nready (...)
1308	PROTOTYPE:	1697	PROTOTYPE:
1309	CODE:	1698	CODE:
1310	RETVAL = coro_nready;	1699	RETVAL = coro_nready;
1311	OUTPUT:	1700	OUTPUT:
1312	RETVAL	1701	RETVAL
1313		1702
		1703	# for async_pool speedup
		1704	void
		1705	_pool_1 (SV *cb)
		1706	CODE:
		1707	{
		1708	struct coro *coro = SvSTATE (coro_current);
		1709	HV *hv = (HV *)SvRV (coro_current);
		1710	AV *defav = GvAV (PL_defgv);
		1711	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1712	AV *invoke_av;
		1713	int i, len;
		1714
		1715	if (!invoke)
		1716	croak ("\3terminate\2\n");
		1717
		1718	SvREFCNT_dec (coro->saved_deffh);
		1719	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1720
		1721	hv_store (hv, "desc", sizeof ("desc") - 1,
		1722	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1723
		1724	invoke_av = (AV *)SvRV (invoke);
		1725	len = av_len (invoke_av);
		1726
		1727	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1728
		1729	if (len > 0)
		1730	{
		1731	av_fill (defav, len - 1);
		1732	for (i = 0; i < len; ++i)
		1733	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1734	}
		1735
		1736	SvREFCNT_dec (invoke);
		1737	}
		1738
		1739	void
		1740	_pool_2 (SV *cb)
		1741	CODE:
		1742	{
		1743	struct coro *coro = SvSTATE (coro_current);
		1744
		1745	sv_setsv (cb, &PL_sv_undef);
		1746
		1747	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1748	coro->saved_deffh = 0;
		1749
		1750	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1751	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1752	croak ("\3terminate\2\n");
		1753
		1754	av_clear (GvAV (PL_defgv));
		1755	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1756	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1757
		1758	coro->prio = 0;
		1759
		1760	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1761	api_trace (coro_current, 0);
		1762
		1763	av_push (av_async_pool, newSVsv (coro_current));
		1764	}
		1765
		1766
1314	MODULE = Coro::State PACKAGE = Coro::AIO	1767	MODULE = Coro::State PACKAGE = Coro::AIO
1315		1768
1316	SV *	1769	SV *
1317	_get_state ()	1770	_get_state ()
1318	CODE:	1771	CODE:

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