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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.172 by root, Sun Sep 30 13:15:01 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	/* async_pool helper stuff */
		138	static SV *sv_pool_rss;
		139	static SV *sv_pool_size;
		140	static AV *av_async_pool;
		141
130	static struct coro_cctx *cctx_first;	142	static struct coro_cctx *cctx_first;
131	static int cctx_count, cctx_idle;	143	static int cctx_count, cctx_idle;
		144
		145	enum {
		146	CC_MAPPED = 0x01,
		147	CC_NOREUSE = 0x02, /* throw this away after tracing */
		148	CC_TRACE = 0x04,
		149	CC_TRACE_SUB = 0x08, /* trace sub calls */
		150	CC_TRACE_LINE = 0x10, /* trace each statement */
		151	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		152	};
132		153
133	/* this is a structure representing a c-level coroutine */	154	/* this is a structure representing a c-level coroutine */
134	typedef struct coro_cctx {	155	typedef struct coro_cctx {
135	struct coro_cctx *next;	156	struct coro_cctx *next;
136		157
137	/* the stack */	158	/* the stack */
138	void *sptr;	159	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	160	size_t ssize;
140		161
141	/* cpu state */	162	/* cpu state */
142	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	163	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 */	164	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144	JMPENV *top_env;	165	JMPENV *top_env;
145	coro_context cctx;	166	coro_context cctx;
146		167
147	int inuse;
148
149	#if USE_VALGRIND	168	#if CORO_USE_VALGRIND
150	int valgrind_id;	169	int valgrind_id;
151	#endif	170	#endif
		171	unsigned char flags;
152	} coro_cctx;	172	} coro_cctx;
153		173
154	enum {	174	enum {
155	CF_RUNNING = 0x0001, /* coroutine is running */	175	CF_RUNNING = 0x0001, /* coroutine is running */
156	CF_READY = 0x0002, /* coroutine is ready */	176	CF_READY = 0x0002, /* coroutine is ready */
157	CF_NEW = 0x0004, /* ahs never been switched to */	177	CF_NEW = 0x0004, /* has never been switched to */
		178	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
158	};	179	};
159		180
160	/* this is a structure representing a perl-level coroutine */	181	/* this is a structure representing a perl-level coroutine */
161	struct coro {	182	struct coro {
162	/* the c coroutine allocated to this perl coroutine, if any */	183	/* the c coroutine allocated to this perl coroutine, if any */
…		…
170		191
171	/* optionally saved, might be zero */	192	/* optionally saved, might be zero */
172	AV *defav; /* @_ */	193	AV *defav; /* @_ */
173	SV *defsv; /* $_ */	194	SV *defsv; /* $_ */
174	SV *errsv; /* $@ */	195	SV *errsv; /* $@ */
		196	GV *deffh; /* default filehandle */
175	SV *irssv; /* $/ */	197	SV *irssv; /* $/ */
176	SV *irssv_sv; /* real $/ cache */	198	SV *irssv_sv; /* real $/ cache */
177		199
178	#define VAR(name,type) type name;	200	#define VAR(name,type) type name;
179	# include "state.h"	201	# include "state.h"
180	#undef VAR	202	#undef VAR
181		203
		204	/* statistics */
		205	int usecount; /* number of switches to this coro */
		206
182	/* coro process data */	207	/* coro process data */
183	int prio;	208	int prio;
		209
		210	/* linked list */
		211	struct coro *next, *prev;
		212	HV *hv; /* the perl hash associated with this coro, if any */
184	};	213	};
185		214
186	typedef struct coro *Coro__State;	215	typedef struct coro *Coro__State;
187	typedef struct coro *Coro__State_or_hashref;	216	typedef struct coro *Coro__State_or_hashref;
188		217
		218	/** Coro ********************************************************************/
		219
		220	#define PRIO_MAX 3
		221	#define PRIO_HIGH 1
		222	#define PRIO_NORMAL 0
		223	#define PRIO_LOW -1
		224	#define PRIO_IDLE -3
		225	#define PRIO_MIN -4
		226
		227	/* for Coro.pm */
		228	static SV *coro_current;
		229	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		230	static int coro_nready;
		231	static struct coro *coro_first;
		232
		233	/** lowlevel stuff **********************************************************/
		234
189	static AV *	235	static AV *
190	coro_clone_padlist (CV *cv)	236	coro_clone_padlist (pTHX_ CV *cv)
191	{	237	{
192	AV *padlist = CvPADLIST (cv);	238	AV *padlist = CvPADLIST (cv);
193	AV *newpadlist, *newpad;	239	AV *newpadlist, *newpad;
194		240
195	newpadlist = newAV ();	241	newpadlist = newAV ();
…		…
207		253
208	return newpadlist;	254	return newpadlist;
209	}	255	}
210		256
211	static void	257	static void
212	free_padlist (AV *padlist)	258	free_padlist (pTHX_ AV *padlist)
213	{	259	{
214	/* may be during global destruction */	260	/* may be during global destruction */
215	if (SvREFCNT (padlist))	261	if (SvREFCNT (padlist))
216	{	262	{
217	I32 i = AvFILLp (padlist);	263	I32 i = AvFILLp (padlist);
…		…
238	AV *padlist;	284	AV *padlist;
239	AV *av = (AV *)mg->mg_obj;	285	AV *av = (AV *)mg->mg_obj;
240		286
241	/* casting is fun. */	287	/* casting is fun. */
242	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	288	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
243	free_padlist (padlist);	289	free_padlist (aTHX_ padlist);
244		290
245	SvREFCNT_dec (av);	291	SvREFCNT_dec (av);
246		292
247	return 0;	293	return 0;
248	}	294	}
…		…
256	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	302	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
257	? SvMAGIC (cv) \	303	? SvMAGIC (cv) \
258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	304	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
259	: 0	305	: 0
260		306
		307	static struct coro *
		308	SvSTATE_ (pTHX_ SV *coro)
		309	{
		310	HV *stash;
		311	MAGIC *mg;
		312
		313	if (SvROK (coro))
		314	coro = SvRV (coro);
		315
		316	if (SvTYPE (coro) != SVt_PVHV)
		317	croak ("Coro::State object required");
		318
		319	stash = SvSTASH (coro);
		320	if (stash != coro_stash && stash != coro_state_stash)
		321	{
		322	/* very slow, but rare, check */
		323	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		324	croak ("Coro::State object required");
		325	}
		326
		327	mg = CORO_MAGIC (coro);
		328	return (struct coro *)mg->mg_ptr;
		329	}
		330
		331	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		332
261	/* the next two functions merely cache the padlists */	333	/* the next two functions merely cache the padlists */
262	static void	334	static void
263	get_padlist (CV *cv)	335	get_padlist (pTHX_ CV *cv)
264	{	336	{
265	MAGIC *mg = CORO_MAGIC (cv);	337	MAGIC *mg = CORO_MAGIC (cv);
266	AV *av;	338	AV *av;
267		339
268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	340	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	341	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
270	else	342	else
271	{	343	{
272	#if PREFER_PERL_FUNCTIONS	344	#if CORO_PREFER_PERL_FUNCTIONS
273	/* this is probably cleaner, but also slower? */	345	/* this is probably cleaner, but also slower? */
274	CV *cp = Perl_cv_clone (cv);	346	CV *cp = Perl_cv_clone (cv);
275	CvPADLIST (cv) = CvPADLIST (cp);	347	CvPADLIST (cv) = CvPADLIST (cp);
276	CvPADLIST (cp) = 0;	348	CvPADLIST (cp) = 0;
277	SvREFCNT_dec (cp);	349	SvREFCNT_dec (cp);
278	#else	350	#else
279	CvPADLIST (cv) = coro_clone_padlist (cv);	351	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
280	#endif	352	#endif
281	}	353	}
282	}	354	}
283		355
284	static void	356	static void
285	put_padlist (CV *cv)	357	put_padlist (pTHX_ CV *cv)
286	{	358	{
287	MAGIC *mg = CORO_MAGIC (cv);	359	MAGIC *mg = CORO_MAGIC (cv);
288	AV *av;	360	AV *av;
289		361
290	if (!mg)	362	if (!mg)
…		…
301	av_extend (av, AvMAX (av) + 1);	373	av_extend (av, AvMAX (av) + 1);
302		374
303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	375	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
304	}	376	}
305		377
		378	/** load & save, init *******************************************************/
		379
306	#define SB do {	380	#define SB do {
307	#define SE } while (0)	381	#define SE } while (0)
308		382
309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE	383	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
310		384
311	static void	385	static void
312	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
313	{	387	{
314	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
315	# include "state.h"	389	# include "state.h"
316	#undef VAR	390	#undef VAR
317		391
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
		395	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
		396
321	if (c->irssv)	397	if (c->irssv)
322	{	398	{
323	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	399	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
		400	{
324	SvREFCNT_dec (c->irssv);	401	SvREFCNT_dec (c->irssv);
		402	c->irssv = 0;
		403	}
325	else	404	else
326	{	405	{
327	REPLACE_SV (PL_rs, c->irssv);	406	REPLACE_SV (PL_rs, c->irssv);
328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);	407	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
329	sv_setsv (c->irssv_sv, PL_rs);	408	sv_setsv (c->irssv_sv, PL_rs);
…		…
335	CV *cv;	414	CV *cv;
336		415
337	/* now do the ugly restore mess */	416	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	417	while ((cv = (CV *)POPs))
339	{	418	{
340	put_padlist (cv); /* mark this padlist as available */	419	put_padlist (aTHX_ cv); /* mark this padlist as available */
341	CvDEPTH (cv) = PTR2IV (POPs);	420	CvDEPTH (cv) = PTR2IV (POPs);
342	CvPADLIST (cv) = (AV *)POPs;	421	CvPADLIST (cv) = (AV *)POPs;
343	}	422	}
344		423
345	PUTBACK;	424	PUTBACK;
346	}	425	}
347	}	426	}
348		427
349	static void	428	static void
350	save_perl (Coro__State c)	429	save_perl (pTHX_ Coro__State c)
351	{	430	{
352	{	431	{
353	dSP;	432	dSP;
354	I32 cxix = cxstack_ix;	433	I32 cxix = cxstack_ix;
355	PERL_CONTEXT *ccstk = cxstack;	434	PERL_CONTEXT *ccstk = cxstack;
…		…
358	/*	437	/*
359	* the worst thing you can imagine happens first - we have to save	438	* the worst thing you can imagine happens first - we have to save
360	* (and reinitialize) all cv's in the whole callchain :(	439	* (and reinitialize) all cv's in the whole callchain :(
361	*/	440	*/
362		441
363	EXTEND (SP, 3 + 1);
364	PUSHs (Nullsv);	442	XPUSHs (Nullsv);
365	/* this loop was inspired by pp_caller */	443	/* this loop was inspired by pp_caller */
366	for (;;)	444	for (;;)
367	{	445	{
368	while (cxix >= 0)	446	while (cxix >= 0)
369	{	447	{
370	PERL_CONTEXT *cx = &ccstk[cxix--];	448	PERL_CONTEXT *cx = &ccstk[cxix--];
371		449
372	if (CxTYPE (cx) == CXt_SUB)	450	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
373	{	451	{
374	CV *cv = cx->blk_sub.cv;	452	CV *cv = cx->blk_sub.cv;
375		453
376	if (CvDEPTH (cv))	454	if (CvDEPTH (cv))
377	{	455	{
…		…
379	PUSHs ((SV *)CvPADLIST (cv));	457	PUSHs ((SV *)CvPADLIST (cv));
380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	458	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	459	PUSHs ((SV *)cv);
382		460
383	CvDEPTH (cv) = 0;	461	CvDEPTH (cv) = 0;
384	get_padlist (cv);	462	get_padlist (aTHX_ cv);
385	}	463	}
386	}	464	}
387	}	465	}
388		466
389	if (top_si->si_type == PERLSI_MAIN)	467	if (top_si->si_type == PERLSI_MAIN)
390	break;	468	break;
391		469
392	top_si = top_si->si_prev;	470	top_si = top_si->si_prev;
393	ccstk = top_si->si_cxstack;	471	ccstk = top_si->si_cxstack;
394	cxix = top_si->si_cxix;	472	cxix = top_si->si_cxix;
395	}	473	}
396		474
397	PUTBACK;	475	PUTBACK;
398	}	476	}
399		477
400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	478	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;
401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	479	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;
402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	480	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;
		481	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;
403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	482	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;
404		483
405	#define VAR(name,type)c->name = PL_ ## name;	484	#define VAR(name,type)c->name = PL_ ## name;
406	# include "state.h"	485	# include "state.h"
407	#undef VAR	486	#undef VAR
…		…
411	* allocate various perl stacks. This is an exact copy	490	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	491	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	492	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	493	* not usually need a lot of stackspace.
415	*/	494	*/
416	#if PREFER_PERL_FUNCTIONS	495	#if CORO_PREFER_PERL_FUNCTIONS
417	# define coro_init_stacks init_stacks	496	# define coro_init_stacks init_stacks
418	#else	497	#else
419	static void	498	static void
420	coro_init_stacks ()	499	coro_init_stacks (pTHX)
421	{	500	{
422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	501	PL_curstackinfo = new_stackinfo(64, 6);
423	PL_curstackinfo->si_type = PERLSI_MAIN;	502	PL_curstackinfo->si_type = PERLSI_MAIN;
424	PL_curstack = PL_curstackinfo->si_stack;	503	PL_curstack = PL_curstackinfo->si_stack;
425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	504	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
426		505
427	PL_stack_base = AvARRAY(PL_curstack);	506	PL_stack_base = AvARRAY(PL_curstack);
428	PL_stack_sp = PL_stack_base;	507	PL_stack_sp = PL_stack_base;
429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	508	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
430		509
431	New(50,PL_tmps_stack,128,SV*);	510	New(50,PL_tmps_stack,64,SV*);
432	PL_tmps_floor = -1;	511	PL_tmps_floor = -1;
433	PL_tmps_ix = -1;	512	PL_tmps_ix = -1;
434	PL_tmps_max = 128;	513	PL_tmps_max = 64;
435		514
436	New(54,PL_markstack,32,I32);	515	New(54,PL_markstack,16,I32);
437	PL_markstack_ptr = PL_markstack;	516	PL_markstack_ptr = PL_markstack;
438	PL_markstack_max = PL_markstack + 32;	517	PL_markstack_max = PL_markstack + 16;
439		518
440	#ifdef SET_MARK_OFFSET	519	#ifdef SET_MARK_OFFSET
441	SET_MARK_OFFSET;	520	SET_MARK_OFFSET;
442	#endif	521	#endif
443		522
444	New(54,PL_scopestack,32,I32);	523	New(54,PL_scopestack,16,I32);
445	PL_scopestack_ix = 0;	524	PL_scopestack_ix = 0;
446	PL_scopestack_max = 32;	525	PL_scopestack_max = 16;
447		526
448	New(54,PL_savestack,64,ANY);	527	New(54,PL_savestack,64,ANY);
449	PL_savestack_ix = 0;	528	PL_savestack_ix = 0;
450	PL_savestack_max = 64;	529	PL_savestack_max = 64;
451		530
452	#if !PERL_VERSION_ATLEAST (5,9,0)	531	#if !PERL_VERSION_ATLEAST (5,9,0)
453	New(54,PL_retstack,16,OP*);	532	New(54,PL_retstack,4,OP*);
454	PL_retstack_ix = 0;	533	PL_retstack_ix = 0;
455	PL_retstack_max = 16;	534	PL_retstack_max = 4;
456	#endif	535	#endif
457	}	536	}
458	#endif	537	#endif
459		538
460	/*	539	/*
461	* destroy the stacks, the callchain etc...	540	* destroy the stacks, the callchain etc...
462	*/	541	*/
463	static void	542	static void
464	coro_destroy_stacks ()	543	coro_destroy_stacks (pTHX)
465	{	544	{
466	if (!IN_DESTRUCT)	545	if (!IN_DESTRUCT)
467	{	546	{
468	/* restore all saved variables and stuff */	547	/* restore all saved variables and stuff */
469	LEAVE_SCOPE (0);	548	LEAVE_SCOPE (0);
…		…
471		550
472	/* free all temporaries */	551	/* free all temporaries */
473	FREETMPS;	552	FREETMPS;
474	assert (PL_tmps_ix == -1);	553	assert (PL_tmps_ix == -1);
475		554
		555	/* unwind all extra stacks */
476	POPSTACK_TO (PL_mainstack);	556	POPSTACK_TO (PL_mainstack);
		557
		558	/* unwind main stack */
		559	dounwind (-1);
477	}	560	}
478		561
479	while (PL_curstackinfo->si_next)	562	while (PL_curstackinfo->si_next)
480	PL_curstackinfo = PL_curstackinfo->si_next;	563	PL_curstackinfo = PL_curstackinfo->si_next;
481		564
…		…
498	#if !PERL_VERSION_ATLEAST (5,9,0)	581	#if !PERL_VERSION_ATLEAST (5,9,0)
499	Safefree (PL_retstack);	582	Safefree (PL_retstack);
500	#endif	583	#endif
501	}	584	}
502		585
		586	static size_t
		587	coro_rss (pTHX_ struct coro *coro)
		588	{
		589	size_t rss = sizeof (coro);
		590
		591	if (coro->mainstack)
		592	{
		593	if (coro->flags & CF_RUNNING)
		594	{
		595	#define VAR(name,type)coro->name = PL_ ## name;
		596	# include "state.h"
		597	#undef VAR
		598	}
		599
		600	rss += sizeof (coro->curstackinfo);
		601	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		602	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		603	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		604	rss += coro->tmps_max * sizeof (SV *);
		605	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		606	rss += coro->scopestack_max * sizeof (I32);
		607	rss += coro->savestack_max * sizeof (ANY);
		608
		609	#if !PERL_VERSION_ATLEAST (5,9,0)
		610	rss += coro->retstack_max * sizeof (OP *);
		611	#endif
		612	}
		613
		614	return rss;
		615	}
		616
		617	/** coroutine stack handling ************************************************/
		618
503	static void	619	static void
504	setup_coro (struct coro *coro)	620	setup_coro (pTHX_ struct coro *coro)
505	{	621	{
506	/*	622	/*
507	* emulate part of the perl startup here.	623	* emulate part of the perl startup here.
508	*/	624	*/
509
510	coro_init_stacks ();	625	coro_init_stacks (aTHX);
511		626
		627	PL_runops = RUNOPS_DEFAULT;
512	PL_curcop = &PL_compiling;	628	PL_curcop = &PL_compiling;
513	PL_in_eval = EVAL_NULL;	629	PL_in_eval = EVAL_NULL;
		630	PL_comppad = 0;
514	PL_curpm = 0;	631	PL_curpm = 0;
515	PL_localizing = 0;	632	PL_localizing = 0;
516	PL_dirty = 0;	633	PL_dirty = 0;
517	PL_restartop = 0;	634	PL_restartop = 0;
518		635
…		…
526	Zero (&myop, 1, LOGOP);	643	Zero (&myop, 1, LOGOP);
527	myop.op_next = Nullop;	644	myop.op_next = Nullop;
528	myop.op_flags = OPf_WANT_VOID;	645	myop.op_flags = OPf_WANT_VOID;
529		646
530	PUSHMARK (SP);	647	PUSHMARK (SP);
531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	648	XPUSHs (av_shift (GvAV (PL_defgv)));
532	PUTBACK;	649	PUTBACK;
533	PL_op = (OP *)&myop;	650	PL_op = (OP *)&myop;
534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	651	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	652	SPAGAIN;
536	}	653	}
537		654
538	ENTER; /* necessary e.g. for dounwind */	655	ENTER; /* necessary e.g. for dounwind */
539	}	656	}
540		657
541	static void	658	static void
542	free_coro_mortal ()	659	free_coro_mortal (pTHX)
543	{	660	{
544	if (coro_mortal)	661	if (coro_mortal)
545	{	662	{
546	SvREFCNT_dec (coro_mortal);	663	SvREFCNT_dec (coro_mortal);
547	coro_mortal = 0;	664	coro_mortal = 0;
548	}	665	}
549	}	666	}
550		667
		668	static int
		669	runops_trace (pTHX)
		670	{
		671	COP *oldcop = 0;
		672	int oldcxix = -2;
		673	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		674	coro_cctx *cctx = coro->cctx;
		675
		676	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		677	{
		678	PERL_ASYNC_CHECK ();
		679
		680	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		681	{
		682	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		683	SV **bot, **top;
		684	AV *av = newAV (); /* return values */
		685	SV **cb;
		686	runops_proc_t old_runops = PL_runops;
		687	dSP;
		688	ENTER;
		689	SAVETMPS;
		690	EXTEND (SP, 3);
		691	PL_runops = RUNOPS_DEFAULT;
		692
		693	GV *gv = CvGV (cx->blk_sub.cv);
		694	SV *fullname = sv_2mortal (newSV (0));
		695	if (isGV (gv))
		696	gv_efullname3 (fullname, gv, 0);
		697
		698	bot = PL_stack_base + cx->blk_oldsp + 1;
		699	top = cx->blk_gimme == G_ARRAY ? SP + 1
		700	: cx->blk_gimme == G_SCALAR ? bot + 1
		701	: bot;
		702
		703	while (bot < top)
		704	av_push (av, SvREFCNT_inc (*bot++));
		705
		706	PUSHMARK (SP);
		707	PUSHs (&PL_sv_no);
		708	PUSHs (fullname);
		709	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		710	PUTBACK;
		711	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		712	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		713	SPAGAIN;
		714
		715	FREETMPS;
		716	LEAVE;
		717	PL_runops = old_runops;
		718	}
		719
		720	if (oldcop != PL_curcop)
		721	{
		722	oldcop = PL_curcop;
		723
		724	if (PL_curcop != &PL_compiling)
		725	{
		726	SV **cb;
		727	runops_proc_t old_runops = PL_runops;
		728	dSP;
		729	ENTER;
		730	SAVETMPS;
		731	EXTEND (SP, 3);
		732	PL_runops = RUNOPS_DEFAULT;
		733
		734	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		735	{
		736	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		737
		738	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		739	{
		740	GV *gv = CvGV (cx->blk_sub.cv);
		741	SV *fullname = sv_2mortal (newSV (0));
		742	if (isGV (gv))
		743	gv_efullname3 (fullname, gv, 0);
		744
		745	PUSHMARK (SP);
		746	PUSHs (&PL_sv_yes);
		747	PUSHs (fullname);
		748	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		749	PUTBACK;
		750	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		751	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		752	SPAGAIN;
		753	}
		754
		755	oldcxix = cxstack_ix;
		756	}
		757
		758	if (cctx->flags & CC_TRACE_LINE)
		759	{
		760	PUSHMARK (SP);
		761	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		762	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		766	SPAGAIN;
		767	}
		768
		769	FREETMPS;
		770	LEAVE;
		771	PL_runops = old_runops;
		772	}
		773	}
		774	}
		775
		776	TAINT_NOT;
		777	return 0;
		778	}
		779
551	/* inject a fake call to Coro::State::_cctx_init into the execution */	780	/* inject a fake call to Coro::State::_cctx_init into the execution */
		781	/* _cctx_init should be careful, as it could be called at almost any time */
		782	/* during execution of a perl program */
552	static void NOINLINE	783	static void NOINLINE
553	prepare_cctx (coro_cctx *cctx)	784	prepare_cctx (pTHX_ coro_cctx *cctx)
554	{	785	{
555	dSP;	786	dSP;
556	LOGOP myop;	787	LOGOP myop;
		788
		789	PL_top_env = &PL_start_env;
		790
		791	if (cctx->flags & CC_TRACE)
		792	PL_runops = runops_trace;
557		793
558	Zero (&myop, 1, LOGOP);	794	Zero (&myop, 1, LOGOP);
559	myop.op_next = PL_op;	795	myop.op_next = PL_op;
560	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	796	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
561		797
…		…
567	PL_op = (OP *)&myop;	803	PL_op = (OP *)&myop;
568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	804	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
569	SPAGAIN;	805	SPAGAIN;
570	}	806	}
571		807
		808	/*
		809	* this is a _very_ stripped down perl interpreter ;)
		810	*/
572	static void	811	static void
573	coro_run (void *arg)	812	coro_run (void *arg)
574	{	813	{
		814	dTHX;
		815
575	/* coro_run is the alternative tail of transfer(), so unlock here. */	816	/* coro_run is the alternative tail of transfer(), so unlock here. */
576	UNLOCK;	817	UNLOCK;
577		818
578	/*	819	/* we now skip the entersub that lead to transfer() */
579	* this is a _very_ stripped down perl interpreter ;)	820	PL_op = PL_op->op_next;
580	*/
581	PL_top_env = &PL_start_env;
582		821
583	/* inject call to cctx_init */	822	/* inject a fake subroutine call to cctx_init */
584	prepare_cctx ((coro_cctx *)arg);	823	prepare_cctx (aTHX_ (coro_cctx *)arg);
585		824
586	/* somebody will hit me for both perl_run and PL_restartop */	825	/* somebody or something will hit me for both perl_run and PL_restartop */
587	PL_restartop = PL_op;	826	PL_restartop = PL_op;
588	perl_run (PL_curinterp);	827	perl_run (PL_curinterp);
589		828
590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	829	/*
591	abort ();	830	* If perl-run returns we assume exit() was being called or the coro
		831	* fell off the end, which seems to be the only valid (non-bug)
		832	* reason for perl_run to return. We try to exit by jumping to the
		833	* bootstrap-time "top" top_env, as we cannot restore the "main"
		834	* coroutine as Coro has no such concept
		835	*/
		836	PL_top_env = main_top_env;
		837	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
592	}	838	}
593		839
594	static coro_cctx *	840	static coro_cctx *
595	cctx_new ()	841	cctx_new ()
596	{	842	{
597	coro_cctx *cctx;	843	coro_cctx *cctx;
		844	void *stack_start;
		845	size_t stack_size;
598		846
599	++cctx_count;	847	++cctx_count;
600		848
601	Newz (0, cctx, 1, coro_cctx);	849	Newz (0, cctx, 1, coro_cctx);
602		850
603	#if HAVE_MMAP	851	#if HAVE_MMAP
604		852
605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	853	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
606	/* mmap supposedly does allocate-on-write for us */	854	/* 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);	855	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
608		856
609	if (cctx->sptr == (void *)-1)	857	if (cctx->sptr != (void *)-1)
610	{
611	perror ("FATAL: unable to mmap stack for coroutine");
612	_exit (EXIT_FAILURE);
613	}	858	{
614
615	# if STACKGUARD	859	# if CORO_STACKGUARD
616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	860	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
617	# endif	861	# endif
		862	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		863	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		864	cctx->flags |= CC_MAPPED;
		865	}
		866	else
		867	#endif
		868	{
		869	cctx->ssize = coro_stacksize * (long)sizeof (long);
		870	New (0, cctx->sptr, coro_stacksize, long);
618		871
619	#else
620
621	cctx->ssize = STACKSIZE * (long)sizeof (long);
622	New (0, cctx->sptr, STACKSIZE, long);
623
624	if (!cctx->sptr)	872	if (!cctx->sptr)
625	{	873	{
626	perror ("FATAL: unable to malloc stack for coroutine");	874	perror ("FATAL: unable to allocate stack for coroutine");
627	_exit (EXIT_FAILURE);	875	_exit (EXIT_FAILURE);
628	}	876	}
629		877
630	#endif	878	stack_start = cctx->sptr;
		879	stack_size = cctx->ssize;
		880	}
631		881
632	#if USE_VALGRIND	882	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);	883	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
640		884
641	return cctx;	885	return cctx;
642	}	886	}
643		887
644	static void	888	static void
…		…
647	if (!cctx)	891	if (!cctx)
648	return;	892	return;
649		893
650	--cctx_count;	894	--cctx_count;
651		895
652	#if USE_VALGRIND	896	#if CORO_USE_VALGRIND
653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	897	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
654	#endif	898	#endif
655		899
656	#if HAVE_MMAP	900	#if HAVE_MMAP
		901	if (cctx->flags & CC_MAPPED)
657	munmap (cctx->sptr, cctx->ssize);	902	munmap (cctx->sptr, cctx->ssize);
658	#else	903	else
		904	#endif
659	Safefree (cctx->sptr);	905	Safefree (cctx->sptr);
660	#endif
661		906
662	Safefree (cctx);	907	Safefree (cctx);
663	}	908	}
664		909
665	static coro_cctx *	910	static coro_cctx *
666	cctx_get ()	911	cctx_get (pTHX)
667	{	912	{
668	coro_cctx *cctx;
669
670	if (cctx_first)	913	while (cctx_first)
671	{	914	{
672	cctx = cctx_first;	915	coro_cctx *cctx = cctx_first;
673	cctx_first = cctx->next;	916	cctx_first = cctx->next;
674	--cctx_idle;	917	--cctx_idle;
675	}	918
676	else	919	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
677	{	920	return cctx;
678	cctx = cctx_new ();	921
679	PL_op = PL_op->op_next;	922	cctx_destroy (cctx);
680	}	923	}
681		924
682	return cctx;	925	return cctx_new ();
683	}	926	}
684		927
685	static void	928	static void
686	cctx_put (coro_cctx *cctx)	929	cctx_put (coro_cctx *cctx)
687	{	930	{
…		…
690	{	933	{
691	coro_cctx *first = cctx_first;	934	coro_cctx *first = cctx_first;
692	cctx_first = first->next;	935	cctx_first = first->next;
693	--cctx_idle;	936	--cctx_idle;
694		937
695	assert (!first->inuse);
696	cctx_destroy (first);	938	cctx_destroy (first);
697	}	939	}
698		940
699	++cctx_idle;	941	++cctx_idle;
700	cctx->next = cctx_first;	942	cctx->next = cctx_first;
701	cctx_first = cctx;	943	cctx_first = cctx;
702	}	944	}
703		945
704	/* never call directly, always through the coro_state_transfer global variable */	946	/** coroutine switching *****************************************************/
		947
705	static void NOINLINE	948	static void NOINLINE
		949	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		950	{
		951	if (prev != next)
		952	{
		953	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		954	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		955
		956	if (next->flags & CF_RUNNING)
		957	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		958
		959	if (next->flags & CF_DESTROYED)
		960	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		961
		962	if (PL_lex_state != LEX_NOTPARSING)
		963	croak ("Coro::State::transfer called while parsing, but this is not supported");
		964	}
		965	}
		966
		967	/* always use the TRANSFER macro */
		968	static void NOINLINE
706	transfer (struct coro *prev, struct coro *next)	969	transfer (pTHX_ struct coro *prev, struct coro *next)
707	{	970	{
708	dSTACKLEVEL;	971	dSTACKLEVEL;
709		972
710	/* sometimes transfer is only called to set idle_sp */	973	/* sometimes transfer is only called to set idle_sp */
711	if (!next)	974	if (!next)
…		…
719		982
720	if (prev->flags & CF_NEW)	983	if (prev->flags & CF_NEW)
721	{	984	{
722	/* create a new empty context */	985	/* create a new empty context */
723	Newz (0, prev->cctx, 1, coro_cctx);	986	Newz (0, prev->cctx, 1, coro_cctx);
724	prev->cctx->inuse = 1;
725	prev->flags &= ~CF_NEW;	987	prev->flags &= ~CF_NEW;
726	prev->flags |= CF_RUNNING;	988	prev->flags |= CF_RUNNING;
727	}	989	}
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		990
736	prev->flags &= ~CF_RUNNING;	991	prev->flags &= ~CF_RUNNING;
737	next->flags |= CF_RUNNING;	992	next->flags |= CF_RUNNING;
738		993
739	LOCK;	994	LOCK;
…		…
741	if (next->flags & CF_NEW)	996	if (next->flags & CF_NEW)
742	{	997	{
743	/* need to start coroutine */	998	/* need to start coroutine */
744	next->flags &= ~CF_NEW;	999	next->flags &= ~CF_NEW;
745	/* first get rid of the old state */	1000	/* first get rid of the old state */
746	save_perl (prev);	1001	save_perl (aTHX_ prev);
747	/* setup coroutine call */	1002	/* setup coroutine call */
748	setup_coro (next);	1003	setup_coro (aTHX_ next);
749	/* need a new stack */
750	assert (!next->cctx);
751	}	1004	}
752	else	1005	else
753	{	1006	{
754	/* coroutine already started */	1007	/* coroutine already started */
755	save_perl (prev);	1008	save_perl (aTHX_ prev);
756	load_perl (next);	1009	load_perl (aTHX_ next);
757	}	1010	}
758		1011
759	prev__cctx = prev->cctx;	1012	prev__cctx = prev->cctx;
760		1013
761	/* possibly "free" the cctx */	1014	/* possibly "free" the cctx */
762	if (prev__cctx->idle_sp == STACKLEVEL)	1015	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
763	{	1016	{
764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1017	/* 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));	1018	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
766		1019
767	prev->cctx = 0;	1020	prev->cctx = 0;
768		1021
769	cctx_put (prev__cctx);	1022	cctx_put (prev__cctx);
770	prev__cctx->inuse = 0;
771	}	1023	}
772		1024
		1025	++next->usecount;
		1026
773	if (!next->cctx)	1027	if (!next->cctx)
774	{
775	next->cctx = cctx_get ();	1028	next->cctx = cctx_get (aTHX);
776	assert (!next->cctx->inuse);
777	next->cctx->inuse = 1;
778	}
779		1029
780	if (prev__cctx != next->cctx)	1030	if (prev__cctx != next->cctx)
781	{	1031	{
782	prev__cctx->top_env = PL_top_env;	1032	prev__cctx->top_env = PL_top_env;
783	PL_top_env = next->cctx->top_env;	1033	PL_top_env = next->cctx->top_env;
784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1034	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
785	}	1035	}
786		1036
787	free_coro_mortal ();	1037	free_coro_mortal (aTHX);
788
789	UNLOCK;	1038	UNLOCK;
790	}	1039	}
791	}	1040	}
792		1041
793	struct transfer_args	1042	struct transfer_args
794	{	1043	{
795	struct coro *prev, *next;	1044	struct coro *prev, *next;
796	};	1045	};
797		1046
798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1047	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1048	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
799		1049
		1050	/** high level stuff ********************************************************/
		1051
800	static void	1052	static int
801	coro_state_destroy (struct coro *coro)	1053	coro_state_destroy (pTHX_ struct coro *coro)
802	{	1054	{
803	if (coro->refcnt--)	1055	if (coro->flags & CF_DESTROYED)
804	return;	1056	return 0;
		1057
		1058	coro->flags |= CF_DESTROYED;
		1059
		1060	if (coro->flags & CF_READY)
		1061	{
		1062	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1063	/* alternative: look through all ready queues and remove the coro */
		1064	LOCK;
		1065	--coro_nready;
		1066	UNLOCK;
		1067	}
		1068	else
		1069	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
805		1070
806	if (coro->mainstack && coro->mainstack != main_mainstack)	1071	if (coro->mainstack && coro->mainstack != main_mainstack)
807	{	1072	{
808	struct coro temp;	1073	struct coro temp;
		1074
		1075	assert (!(coro->flags & CF_RUNNING));
		1076
809	Zero (&temp, 1, struct coro);	1077	Zero (&temp, 1, struct coro);
810	temp.save = CORO_SAVE_ALL;	1078	temp.save = CORO_SAVE_ALL;
811		1079
812	if (coro->flags & CF_RUNNING)	1080	if (coro->flags & CF_RUNNING)
813	croak ("FATAL: tried to destroy currently running coroutine");	1081	croak ("FATAL: tried to destroy currently running coroutine");
814		1082
815	save_perl (&temp);	1083	save_perl (aTHX_ &temp);
816	load_perl (coro);	1084	load_perl (aTHX_ coro);
817		1085
818	coro_destroy_stacks ();	1086	coro_destroy_stacks (aTHX);
819		1087
820	load_perl (&temp); /* this will get rid of defsv etc.. */	1088	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
821		1089
822	coro->mainstack = 0;	1090	coro->mainstack = 0;
823	}	1091	}
824		1092
825	cctx_destroy (coro->cctx);	1093	cctx_destroy (coro->cctx);
826	SvREFCNT_dec (coro->args);	1094	SvREFCNT_dec (coro->args);
827	Safefree (coro);	1095
		1096	if (coro->next) coro->next->prev = coro->prev;
		1097	if (coro->prev) coro->prev->next = coro->next;
		1098	if (coro == coro_first) coro_first = coro->next;
		1099
		1100	return 1;
828	}	1101	}
829		1102
830	static int	1103	static int
831	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1104	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
832	{	1105	{
833	struct coro *coro = (struct coro *)mg->mg_ptr;	1106	struct coro *coro = (struct coro *)mg->mg_ptr;
834	mg->mg_ptr = 0;	1107	mg->mg_ptr = 0;
835		1108
		1109	coro->hv = 0;
		1110
		1111	if (--coro->refcnt < 0)
		1112	{
836	coro_state_destroy (coro);	1113	coro_state_destroy (aTHX_ coro);
		1114	Safefree (coro);
		1115	}
837		1116
838	return 0;	1117	return 0;
839	}	1118	}
840		1119
841	static int	1120	static int
…		…
848	return 0;	1127	return 0;
849	}	1128	}
850		1129
851	static MGVTBL coro_state_vtbl = {	1130	static MGVTBL coro_state_vtbl = {
852	0, 0, 0, 0,	1131	0, 0, 0, 0,
853	coro_state_clear,	1132	coro_state_free,
854	0,	1133	0,
855	#ifdef MGf_DUP	1134	#ifdef MGf_DUP
856	coro_state_dup,	1135	coro_state_dup,
857	#else	1136	#else
858	# define MGf_DUP 0	1137	# define MGf_DUP 0
859	#endif	1138	#endif
860	};	1139	};
861		1140
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	1141	static void
885	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1142	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
886	{	1143	{
887	ta->prev = SvSTATE (prev_sv);	1144	ta->prev = SvSTATE (prev_sv);
888	ta->next = SvSTATE (next_sv);	1145	ta->next = SvSTATE (next_sv);
		1146	TRANSFER_CHECK (*ta);
889	}	1147	}
890		1148
891	static void	1149	static void
892	api_transfer (SV *prev_sv, SV *next_sv)	1150	api_transfer (SV *prev_sv, SV *next_sv)
893	{	1151	{
		1152	dTHX;
894	struct transfer_args ta;	1153	struct transfer_args ta;
895		1154
896	prepare_transfer (&ta, prev_sv, next_sv);	1155	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
897	TRANSFER (ta);	1156	TRANSFER (ta);
898	}	1157	}
899		1158
900	static int	1159	static int
901	api_save (SV *coro_sv, int new_save)	1160	api_save (SV *coro_sv, int new_save)
902	{	1161	{
		1162	dTHX;
903	struct coro *coro = SvSTATE (coro_sv);	1163	struct coro *coro = SvSTATE (coro_sv);
904	int old_save = coro->save;	1164	int old_save = coro->save;
905		1165
906	if (new_save >= 0)	1166	if (new_save >= 0)
907	coro->save = new_save;	1167	coro->save = new_save;
…		…
909	return old_save;	1169	return old_save;
910	}	1170	}
911		1171
912	/** Coro ********************************************************************/	1172	/** Coro ********************************************************************/
913		1173
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	1174	static void
927	coro_enq (SV *coro_sv)	1175	coro_enq (pTHX_ SV *coro_sv)
928	{	1176	{
929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1177	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
930	coro_nready++;
931	}	1178	}
932		1179
933	static SV *	1180	static SV *
934	coro_deq (int min_prio)	1181	coro_deq (pTHX_ int min_prio)
935	{	1182	{
936	int prio = PRIO_MAX - PRIO_MIN;	1183	int prio = PRIO_MAX - PRIO_MIN;
937		1184
938	min_prio -= PRIO_MIN;	1185	min_prio -= PRIO_MIN;
939	if (min_prio < 0)	1186	if (min_prio < 0)
940	min_prio = 0;	1187	min_prio = 0;
941		1188
942	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1189	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
943	if (AvFILLp (coro_ready [prio]) >= 0)	1190	if (AvFILLp (coro_ready [prio]) >= 0)
944	{
945	coro_nready--;
946	return av_shift (coro_ready [prio]);	1191	return av_shift (coro_ready [prio]);
947	}
948		1192
949	return 0;	1193	return 0;
950	}	1194	}
951		1195
952	static int	1196	static int
953	api_ready (SV *coro_sv)	1197	api_ready (SV *coro_sv)
954	{	1198	{
		1199	dTHX;
955	struct coro *coro;	1200	struct coro *coro;
956		1201
957	if (SvROK (coro_sv))	1202	if (SvROK (coro_sv))
958	coro_sv = SvRV (coro_sv);	1203	coro_sv = SvRV (coro_sv);
959		1204
…		…
963	return 0;	1208	return 0;
964		1209
965	coro->flags |= CF_READY;	1210	coro->flags |= CF_READY;
966		1211
967	LOCK;	1212	LOCK;
968	coro_enq (SvREFCNT_inc (coro_sv));	1213	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1214	++coro_nready;
969	UNLOCK;	1215	UNLOCK;
970		1216
971	return 1;	1217	return 1;
972	}	1218	}
973		1219
974	static int	1220	static int
975	api_is_ready (SV *coro_sv)	1221	api_is_ready (SV *coro_sv)
976	{	1222	{
		1223	dTHX;
977	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1224	return !!(SvSTATE (coro_sv)->flags & CF_READY);
978	}	1225	}
979		1226
980	static void	1227	static void
981	prepare_schedule (struct transfer_args *ta)	1228	prepare_schedule (pTHX_ struct transfer_args *ta)
982	{	1229	{
983	SV *prev, *next;	1230	SV *prev_sv, *next_sv;
984		1231
985	for (;;)	1232	for (;;)
986	{	1233	{
987	LOCK;	1234	LOCK;
988	next = coro_deq (PRIO_MIN);	1235	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1236
		1237	/* nothing to schedule: call the idle handler */
		1238	if (!next_sv)
		1239	{
		1240	dSP;
		1241	UNLOCK;
		1242
		1243	ENTER;
		1244	SAVETMPS;
		1245
		1246	PUSHMARK (SP);
		1247	PUTBACK;
		1248	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1249
		1250	FREETMPS;
		1251	LEAVE;
		1252	continue;
		1253	}
		1254
		1255	ta->next = SvSTATE (next_sv);
		1256
		1257	/* cannot transfer to destroyed coros, skip and look for next */
		1258	if (ta->next->flags & CF_DESTROYED)
		1259	{
		1260	UNLOCK;
		1261	SvREFCNT_dec (next_sv);
		1262	/* coro_nready is already taken care of by destroy */
		1263	continue;
		1264	}
		1265
		1266	--coro_nready;
989	UNLOCK;	1267	UNLOCK;
990
991	if (next)
992	break;	1268	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	}	1269	}
1007	}
1008
1009	prev = SvRV (coro_current);
1010	SvRV_set (coro_current, next);
1011		1270
1012	/* free this only after the transfer */	1271	/* free this only after the transfer */
1013	LOCK;	1272	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);	1273	ta->prev = SvSTATE (prev_sv);
1022	ta->next = SvSTATE (next);	1274	TRANSFER_CHECK (*ta);
1023
1024	assert (ta->next->flags & CF_READY);	1275	assert (ta->next->flags & CF_READY);
1025	ta->next->flags &= ~CF_READY;	1276	ta->next->flags &= ~CF_READY;
		1277	SvRV_set (coro_current, next_sv);
		1278
		1279	LOCK;
		1280	free_coro_mortal (aTHX);
		1281	coro_mortal = prev_sv;
		1282	UNLOCK;
1026	}	1283	}
1027		1284
1028	static void	1285	static void
1029	prepare_cede (struct transfer_args *ta)	1286	prepare_cede (pTHX_ struct transfer_args *ta)
1030	{	1287	{
1031	api_ready (coro_current);	1288	api_ready (coro_current);
1032	prepare_schedule (ta);	1289	prepare_schedule (aTHX_ ta);
1033	}	1290	}
1034		1291
1035	static int	1292	static int
1036	prepare_cede_notself (struct transfer_args *ta)	1293	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1037	{	1294	{
1038	if (coro_nready)	1295	if (coro_nready)
1039	{	1296	{
1040	SV *prev = SvRV (coro_current);	1297	SV *prev = SvRV (coro_current);
1041	prepare_schedule (ta);	1298	prepare_schedule (aTHX_ ta);
1042	api_ready (prev);	1299	api_ready (prev);
1043	return 1;	1300	return 1;
1044	}	1301	}
1045	else	1302	else
1046	return 0;	1303	return 0;
1047	}	1304	}
1048		1305
1049	static void	1306	static void
1050	api_schedule (void)	1307	api_schedule (void)
1051	{	1308	{
		1309	dTHX;
1052	struct transfer_args ta;	1310	struct transfer_args ta;
1053		1311
1054	prepare_schedule (&ta);	1312	prepare_schedule (aTHX_ &ta);
1055	TRANSFER (ta);	1313	TRANSFER (ta);
1056	}	1314	}
1057		1315
1058	static int	1316	static int
1059	api_cede (void)	1317	api_cede (void)
1060	{	1318	{
		1319	dTHX;
1061	struct transfer_args ta;	1320	struct transfer_args ta;
1062		1321
1063	prepare_cede (&ta);	1322	prepare_cede (aTHX_ &ta);
1064		1323
1065	if (ta.prev != ta.next)	1324	if (ta.prev != ta.next)
1066	{	1325	{
1067	TRANSFER (ta);	1326	TRANSFER (ta);
1068	return 1;	1327	return 1;
…		…
1072	}	1331	}
1073		1332
1074	static int	1333	static int
1075	api_cede_notself (void)	1334	api_cede_notself (void)
1076	{	1335	{
		1336	dTHX;
1077	struct transfer_args ta;	1337	struct transfer_args ta;
1078		1338
1079	if (prepare_cede_notself (&ta))	1339	if (prepare_cede_notself (aTHX_ &ta))
1080	{	1340	{
1081	TRANSFER (ta);	1341	TRANSFER (ta);
1082	return 1;	1342	return 1;
1083	}	1343	}
1084	else	1344	else
…		…
1095	MUTEX_INIT (&coro_mutex);	1355	MUTEX_INIT (&coro_mutex);
1096	#endif	1356	#endif
1097	BOOT_PAGESIZE;	1357	BOOT_PAGESIZE;
1098		1358
1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1359	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1360
		1361	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1362	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1363	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1364	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1100		1365
1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1366	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));
1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1367	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));	1368	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));	1369	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
		1370	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
		1371	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));
1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1372	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));
1106		1373
1107	main_mainstack = PL_mainstack;	1374	main_mainstack = PL_mainstack;
		1375	main_top_env = PL_top_env;
		1376
		1377	while (main_top_env->je_prev)
		1378	main_top_env = main_top_env->je_prev;
1108		1379
1109	coroapi.ver = CORO_API_VERSION;	1380	coroapi.ver = CORO_API_VERSION;
1110	coroapi.transfer = api_transfer;	1381	coroapi.transfer = api_transfer;
1111		1382
1112	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1383	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1120	HV *hv;	1391	HV *hv;
1121	int i;	1392	int i;
1122		1393
1123	Newz (0, coro, 1, struct coro);	1394	Newz (0, coro, 1, struct coro);
1124	coro->args = newAV ();	1395	coro->args = newAV ();
1125	coro->save = CORO_SAVE_ALL;	1396	coro->save = CORO_SAVE_DEF;
1126	coro->flags = CF_NEW;	1397	coro->flags = CF_NEW;
1127		1398
		1399	if (coro_first) coro_first->prev = coro;
		1400	coro->next = coro_first;
		1401	coro_first = coro;
		1402
1128	hv = newHV ();	1403	coro->hv = hv = newHV ();
1129	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1404	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));	1405	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1131		1406
1132	for (i = 1; i < items; i++)	1407	for (i = 1; i < items; i++)
1133	av_push (coro->args, newSVsv (ST (i)));	1408	av_push (coro->args, newSVsv (ST (i)));
…		…
1137		1412
1138	int	1413	int
1139	save (SV *coro, int new_save = -1)	1414	save (SV *coro, int new_save = -1)
1140	CODE:	1415	CODE:
1141	RETVAL = api_save (coro, new_save);	1416	RETVAL = api_save (coro, new_save);
		1417	OUTPUT:
		1418	RETVAL
		1419
		1420	int
		1421	save_also (SV *coro_sv, int save_also)
		1422	CODE:
		1423	{
		1424	struct coro *coro = SvSTATE (coro_sv);
		1425	RETVAL = coro->save;
		1426	coro->save |= save_also;
		1427	}
1142	OUTPUT:	1428	OUTPUT:
1143	RETVAL	1429	RETVAL
1144		1430
1145	void	1431	void
1146	_set_stacklevel (...)	1432	_set_stacklevel (...)
…		…
1162		1448
1163	case 1:	1449	case 1:
1164	if (items != 2)	1450	if (items != 2)
1165	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1451	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1166		1452
1167	prepare_transfer (&ta, ST (0), ST (1));	1453	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1168	break;	1454	break;
1169		1455
1170	case 2:	1456	case 2:
1171	prepare_schedule (&ta);	1457	prepare_schedule (aTHX_ &ta);
1172	break;	1458	break;
1173		1459
1174	case 3:	1460	case 3:
1175	prepare_cede (&ta);	1461	prepare_cede (aTHX_ &ta);
1176	break;	1462	break;
1177		1463
1178	case 4:	1464	case 4:
1179	if (!prepare_cede_notself (&ta))	1465	if (!prepare_cede_notself (aTHX_ &ta))
1180	XSRETURN_EMPTY;	1466	XSRETURN_EMPTY;
1181		1467
1182	break;	1468	break;
1183	}	1469	}
1184		1470
1185	BARRIER;	1471	BARRIER;
1186	TRANSFER (ta);	1472	TRANSFER (ta);
1187	}
1188		1473
1189	void	1474	if (GIMME_V != G_VOID && ta.next != ta.prev)
1190	_clone_state_from (SV *dst, SV *src)	1475	XSRETURN_YES;
		1476	}
		1477
		1478	bool
		1479	_destroy (SV *coro_sv)
1191	CODE:	1480	CODE:
1192	{	1481	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1193	struct coro *coro_src = SvSTATE (src);	1482	OUTPUT:
1194		1483	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		1484
1201	void	1485	void
1202	_exit (code)	1486	_exit (code)
1203	int code	1487	int code
1204	PROTOTYPE: $	1488	PROTOTYPE: $
1205	CODE:	1489	CODE:
1206	_exit (code);	1490	_exit (code);
1207		1491
1208	int	1492	int
		1493	cctx_stacksize (int new_stacksize = 0)
		1494	CODE:
		1495	RETVAL = coro_stacksize;
		1496	if (new_stacksize)
		1497	coro_stacksize = new_stacksize;
		1498	OUTPUT:
		1499	RETVAL
		1500
		1501	int
1209	cctx_count ()	1502	cctx_count ()
1210	CODE:	1503	CODE:
1211	RETVAL = cctx_count;	1504	RETVAL = cctx_count;
1212	OUTPUT:	1505	OUTPUT:
1213	RETVAL	1506	RETVAL
…		…
1217	CODE:	1510	CODE:
1218	RETVAL = cctx_idle;	1511	RETVAL = cctx_idle;
1219	OUTPUT:	1512	OUTPUT:
1220	RETVAL	1513	RETVAL
1221		1514
		1515	void
		1516	list ()
		1517	PPCODE:
		1518	{
		1519	struct coro *coro;
		1520	for (coro = coro_first; coro; coro = coro->next)
		1521	if (coro->hv)
		1522	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1523	}
		1524
		1525	void
		1526	call (Coro::State coro, SV *coderef)
		1527	ALIAS:
		1528	eval = 1
		1529	CODE:
		1530	{
		1531	if (coro->mainstack)
		1532	{
		1533	struct coro temp;
		1534	Zero (&temp, 1, struct coro);
		1535	temp.save = CORO_SAVE_ALL;
		1536
		1537	if (!(coro->flags & CF_RUNNING))
		1538	{
		1539	save_perl (aTHX_ &temp);
		1540	load_perl (aTHX_ coro);
		1541	}
		1542
		1543	{
		1544	dSP;
		1545	ENTER;
		1546	SAVETMPS;
		1547	PUSHMARK (SP);
		1548	PUTBACK;
		1549	if (ix)
		1550	eval_sv (coderef, 0);
		1551	else
		1552	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1553	SPAGAIN;
		1554	FREETMPS;
		1555	LEAVE;
		1556	PUTBACK;
		1557	}
		1558
		1559	if (!(coro->flags & CF_RUNNING))
		1560	{
		1561	save_perl (aTHX_ coro);
		1562	load_perl (aTHX_ &temp);
		1563	}
		1564	}
		1565	}
		1566
		1567	SV *
		1568	is_ready (Coro::State coro)
		1569	PROTOTYPE: $
		1570	ALIAS:
		1571	is_ready = CF_READY
		1572	is_running = CF_RUNNING
		1573	is_new = CF_NEW
		1574	is_destroyed = CF_DESTROYED
		1575	CODE:
		1576	RETVAL = boolSV (coro->flags & ix);
		1577	OUTPUT:
		1578	RETVAL
		1579
		1580	void
		1581	trace (Coro::State coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1582	CODE:
		1583	if (flags & CC_TRACE)
		1584	{
		1585	if (!coro->cctx)
		1586	coro->cctx = cctx_new ();
		1587	else if (!(coro->cctx->flags & CC_TRACE))
		1588	croak ("cannot enable tracing on coroutine with custom stack");
		1589
		1590	coro->cctx->flags |= flags & (CC_TRACE | CC_TRACE_ALL);
		1591	}
		1592	else
		1593	if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1594	{
		1595	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1596	coro->cctx->flags |= CC_NOREUSE;
		1597
		1598	if (coro->flags & CF_RUNNING)
		1599	PL_runops = RUNOPS_DEFAULT;
		1600	else
		1601	coro->runops = RUNOPS_DEFAULT;
		1602	}
		1603
		1604	SV *
		1605	has_stack (Coro::State coro)
		1606	PROTOTYPE: $
		1607	CODE:
		1608	RETVAL = boolSV (!!coro->cctx);
		1609	OUTPUT:
		1610	RETVAL
		1611
		1612	int
		1613	is_traced (Coro::State coro)
		1614	PROTOTYPE: $
		1615	CODE:
		1616	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620	IV
		1621	rss (Coro::State coro)
		1622	PROTOTYPE: $
		1623	ALIAS:
		1624	usecount = 1
		1625	CODE:
		1626	switch (ix)
		1627	{
		1628	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1629	case 1: RETVAL = coro->usecount; break;
		1630	}
		1631	OUTPUT:
		1632	RETVAL
		1633
		1634
1222	MODULE = Coro::State PACKAGE = Coro	1635	MODULE = Coro::State PACKAGE = Coro
1223		1636
1224	BOOT:	1637	BOOT:
1225	{	1638	{
1226	int i;	1639	int i;
		1640
		1641	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1642	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1643	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1644
		1645	coro_current = get_sv ("Coro::current", FALSE);
		1646	SvREADONLY_on (coro_current);
1227		1647
1228	coro_stash = gv_stashpv ("Coro", TRUE);	1648	coro_stash = gv_stashpv ("Coro", TRUE);
1229		1649
1230	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1650	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1231	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1651	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1652	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1653	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1654	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1655	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1236
1237	coro_current = get_sv ("Coro::current", FALSE);
1238	SvREADONLY_on (coro_current);
1239		1656
1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1657	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1241	coro_ready[i] = newAV ();	1658	coro_ready[i] = newAV ();
1242		1659
1243	{	1660	{
…		…
1293	CODE:	1710	CODE:
1294	RETVAL = boolSV (api_ready (self));	1711	RETVAL = boolSV (api_ready (self));
1295	OUTPUT:	1712	OUTPUT:
1296	RETVAL	1713	RETVAL
1297		1714
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	1715	int
1307	nready (...)	1716	nready (...)
1308	PROTOTYPE:	1717	PROTOTYPE:
1309	CODE:	1718	CODE:
1310	RETVAL = coro_nready;	1719	RETVAL = coro_nready;
1311	OUTPUT:	1720	OUTPUT:
1312	RETVAL	1721	RETVAL
1313		1722
		1723	# for async_pool speedup
		1724	void
		1725	_pool_1 (SV *cb)
		1726	CODE:
		1727	{
		1728	int i, len;
		1729	HV *hv = (HV *)SvRV (coro_current);
		1730	AV *defav = GvAV (PL_defgv);
		1731	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1732	AV *invoke_av;
		1733
		1734	if (!invoke)
		1735	croak ("\3terminate\2\n");
		1736
		1737	hv_store (hv, "desc", sizeof ("desc") - 1,
		1738	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1739
		1740	invoke_av = (AV *)SvRV (invoke);
		1741	len = av_len (invoke_av);
		1742
		1743	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1744
		1745	if (len > 0)
		1746	{
		1747	av_fill (defav, len - 1);
		1748	for (i = 0; i < len; ++i)
		1749	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1750	}
		1751
		1752	SvREFCNT_dec (invoke);
		1753	}
		1754
		1755	void
		1756	_pool_2 (SV *cb)
		1757	CODE:
		1758	{
		1759	struct coro *coro = SvSTATE (coro_current);
		1760
		1761	sv_setsv (cb, &PL_sv_undef);
		1762
		1763	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1764	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1765	croak ("\3terminate\2\n");
		1766
		1767	av_clear (GvAV (PL_defgv));
		1768	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1769	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1770	coro->save = CORO_SAVE_DEF;
		1771	coro->prio = 0;
		1772	av_push (av_async_pool, newSVsv (coro_current));
		1773	}
		1774
		1775
1314	MODULE = Coro::State PACKAGE = Coro::AIO	1776	MODULE = Coro::State PACKAGE = Coro::AIO
1315		1777
1316	SV *	1778	SV *
1317	_get_state ()	1779	_get_state ()
1318	CODE:	1780	CODE:

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