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Comparing Coro/Coro/State.xs (file contents):
Revision 1.141 by root, Mon Jan 22 18:45:17 2007 UTC vs.
Revision 1.190 by root, Fri Oct 5 20:39:39 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
…		…
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
38	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))	40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
39	#else	41	#else
40	# define REGISTER_STACK(cctx,start,end)	42	# define REGISTER_STACK(cctx,start,end)
41	#endif	43	#endif
…		…
73	/* 5.8.7 */	75	/* 5.8.7 */
74	#ifndef SvRV_set	76	#ifndef SvRV_set
75	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
76	#endif	78	#endif
77		79
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84
78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	85	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
79	# undef STACKGUARD	86	# undef CORO_STACKGUARD
80	#endif	87	#endif
81		88
82	#ifndef STACKGUARD	89	#ifndef CORO_STACKGUARD
83	# define STACKGUARD 0	90	# define CORO_STACKGUARD 0
84	#endif	91	#endif
85		92
86	/* prefer perl internal functions over our own? */	93	/* prefer perl internal functions over our own? */
87	#ifndef PREFER_PERL_FUNCTIONS	94	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define PREFER_PERL_FUNCTIONS 0	95	# define CORO_PREFER_PERL_FUNCTIONS 0
89	#endif	96	#endif
90		97
91	/* The next macro should declare a variable stacklevel that contains and approximation	98	/* The next macros try to return the current stack pointer, in an as
92	* to the current C stack pointer. Its property is that it changes with each call	99	* portable way as possible. */
93	* and should be unique. */
94	#define dSTACKLEVEL int stacklevel	100	#define dSTACKLEVEL volatile char stacklevel
95	#define STACKLEVEL ((void *)&stacklevel)	101	#define STACKLEVEL ((void *)&stacklevel)
96		102
97	#define IN_DESTRUCT (PL_main_cv == Nullcv)	103	#define IN_DESTRUCT (PL_main_cv == Nullcv)
98		104
99	#if __GNUC__ >= 3	105	#if __GNUC__ >= 3
…		…
124	I32 laststype;	130	I32 laststype;
125	int laststatval;	131	int laststatval;
126	Stat_t statcache;	132	Stat_t statcache;
127	};	133	};
128		134
		135	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	136	static struct CoroAPI coroapi;
130	static AV *main_mainstack; /* used to differentiate between $main and others */	137	static AV *main_mainstack; /* used to differentiate between $main and others */
		138	static JMPENV *main_top_env;
131	static HV *coro_state_stash, *coro_stash;	139	static HV *coro_state_stash, *coro_stash;
132	static SV *coro_mortal; /* will be freed after next transfer */	140	static SV *coro_mortal; /* will be freed after next transfer */
133		141
		142	static GV *irsgv; /* $/ */
		143	static GV *stdoutgv; /* *STDOUT */
		144
		145	/* async_pool helper stuff */
		146	static SV *sv_pool_rss;
		147	static SV *sv_pool_size;
		148	static AV *av_async_pool;
		149
134	static struct coro_cctx *cctx_first;	150	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	151	static int cctx_count, cctx_idle;
		152
		153	enum {
		154	CC_MAPPED = 0x01,
		155	CC_NOREUSE = 0x02, /* throw this away after tracing */
		156	CC_TRACE = 0x04,
		157	CC_TRACE_SUB = 0x08, /* trace sub calls */
		158	CC_TRACE_LINE = 0x10, /* trace each statement */
		159	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		160	};
136		161
137	/* this is a structure representing a c-level coroutine */	162	/* this is a structure representing a c-level coroutine */
138	typedef struct coro_cctx {	163	typedef struct coro_cctx {
139	struct coro_cctx *next;	164	struct coro_cctx *next;
140		165
141	/* the stack */	166	/* the stack */
142	void *sptr;	167	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	168	size_t ssize;
144		169
145	/* cpu state */	170	/* cpu state */
146	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	171	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
147	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	172	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	173	JMPENV *top_env;
149	coro_context cctx;	174	coro_context cctx;
150		175
151	int inuse;
152
153	#if USE_VALGRIND	176	#if CORO_USE_VALGRIND
154	int valgrind_id;	177	int valgrind_id;
155	#endif	178	#endif
		179	unsigned char flags;
156	} coro_cctx;	180	} coro_cctx;
157		181
158	enum {	182	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	183	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	184	CF_READY = 0x0002, /* coroutine is ready */
…		…
168	coro_cctx *cctx;	192	coro_cctx *cctx;
169		193
170	/* data associated with this coroutine (initial args) */	194	/* data associated with this coroutine (initial args) */
171	AV *args;	195	AV *args;
172	int refcnt;	196	int refcnt;
173	int save; /* CORO_SAVE flags */
174	int flags; /* CF_ flags */	197	int flags; /* CF_ flags */
175		198
176	/* optionally saved, might be zero */	199	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	200	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	201	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	202	SV *errsv; /* $@ */
		203	SV *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	204	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	205	SV *irssv_sv; /* real $/ cache */
182		206
183	#define VAR(name,type) type name;	207	#define VAR(name,type) type name;
184	# include "state.h"	208	# include "state.h"
185	#undef VAR	209	#undef VAR
186		210
		211	/* statistics */
		212	int usecount; /* number of transfers to this coro */
		213
187	/* coro process data */	214	/* coro process data */
188	int prio;	215	int prio;
		216	//SV *throw;
		217
		218	/* async_pool */
		219	SV *saved_deffh;
		220
		221	/* linked list */
		222	struct coro *next, *prev;
		223	HV *hv; /* the perl hash associated with this coro, if any */
189	};	224	};
190		225
191	typedef struct coro *Coro__State;	226	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	227	typedef struct coro *Coro__State_or_hashref;
193		228
…		…
202		237
203	/* for Coro.pm */	238	/* for Coro.pm */
204	static SV *coro_current;	239	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	240	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	241	static int coro_nready;
		242	static struct coro *coro_first;
207		243
208	/** lowlevel stuff **********************************************************/	244	/** lowlevel stuff **********************************************************/
209		245
210	static AV *	246	static AV *
211	coro_clone_padlist (CV *cv)	247	coro_clone_padlist (pTHX_ CV *cv)
212	{	248	{
213	AV *padlist = CvPADLIST (cv);	249	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	250	AV *newpadlist, *newpad;
215		251
216	newpadlist = newAV ();	252	newpadlist = newAV ();
…		…
228		264
229	return newpadlist;	265	return newpadlist;
230	}	266	}
231		267
232	static void	268	static void
233	free_padlist (AV *padlist)	269	free_padlist (pTHX_ AV *padlist)
234	{	270	{
235	/* may be during global destruction */	271	/* may be during global destruction */
236	if (SvREFCNT (padlist))	272	if (SvREFCNT (padlist))
237	{	273	{
238	I32 i = AvFILLp (padlist);	274	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	295	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	296	AV *av = (AV *)mg->mg_obj;
261		297
262	/* casting is fun. */	298	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	299	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	300	free_padlist (aTHX_ padlist);
265		301
266	SvREFCNT_dec (av);	302	SvREFCNT_dec (av);
267		303
268	return 0;	304	return 0;
269	}	305	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	313	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	314	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	315	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	316	: 0
281		317
		318	static struct coro *
		319	SvSTATE_ (pTHX_ SV *coro)
		320	{
		321	HV *stash;
		322	MAGIC *mg;
		323
		324	if (SvROK (coro))
		325	coro = SvRV (coro);
		326
		327	if (SvTYPE (coro) != SVt_PVHV)
		328	croak ("Coro::State object required");
		329
		330	stash = SvSTASH (coro);
		331	if (stash != coro_stash && stash != coro_state_stash)
		332	{
		333	/* very slow, but rare, check */
		334	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		335	croak ("Coro::State object required");
		336	}
		337
		338	mg = CORO_MAGIC (coro);
		339	return (struct coro *)mg->mg_ptr;
		340	}
		341
		342	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		343
282	/* the next two functions merely cache the padlists */	344	/* the next two functions merely cache the padlists */
283	static void	345	static void
284	get_padlist (CV *cv)	346	get_padlist (pTHX_ CV *cv)
285	{	347	{
286	MAGIC *mg = CORO_MAGIC (cv);	348	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	349	AV *av;
288		350
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	351	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	352	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291	else	353	else
292	{	354	{
293	#if PREFER_PERL_FUNCTIONS	355	#if CORO_PREFER_PERL_FUNCTIONS
294	/* this is probably cleaner, but also slower? */	356	/* this is probably cleaner, but also slower? */
295	CV *cp = Perl_cv_clone (cv);	357	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	358	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	359	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	360	SvREFCNT_dec (cp);
299	#else	361	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	362	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	363	#endif
302	}	364	}
303	}	365	}
304		366
305	static void	367	static void
306	put_padlist (CV *cv)	368	put_padlist (pTHX_ CV *cv)
307	{	369	{
308	MAGIC *mg = CORO_MAGIC (cv);	370	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	371	AV *av;
310		372
311	if (!mg)	373	if (!mg)
…		…
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	386	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	387	}
326		388
327	/** load & save, init *******************************************************/	389	/** load & save, init *******************************************************/
328		390
329	#define SB do {
330	#define SE } while (0)
331
332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333
334	static void	391	static void
335	load_perl (Coro__State c)	392	load_perl (pTHX_ Coro__State c)
336	{	393	{
337	#define VAR(name,type) PL_ ## name = c->name;	394	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	395	# include "state.h"
339	#undef VAR	396	#undef VAR
340		397
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	398	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	399	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	400	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	401	GvSV (irsgv) = c->irssv_sv;
345	{
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347	SvREFCNT_dec (c->irssv);
348	else
349	{
350	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);
353	}
354	}
355		402
356	{	403	{
357	dSP;	404	dSP;
358	CV *cv;	405	CV *cv;
359		406
360	/* now do the ugly restore mess */	407	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	408	while ((cv = (CV *)POPs))
362	{	409	{
363	put_padlist (cv); /* mark this padlist as available */	410	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	411	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	412	CvPADLIST (cv) = (AV *)POPs;
366	}	413	}
367		414
368	PUTBACK;	415	PUTBACK;
369	}	416	}
370	}	417	}
371		418
372	static void	419	static void
373	save_perl (Coro__State c)	420	save_perl (pTHX_ Coro__State c)
374	{	421	{
375	{	422	{
376	dSP;	423	dSP;
377	I32 cxix = cxstack_ix;	424	I32 cxix = cxstack_ix;
378	PERL_CONTEXT *ccstk = cxstack;	425	PERL_CONTEXT *ccstk = cxstack;
…		…
381	/*	428	/*
382	* the worst thing you can imagine happens first - we have to save	429	* the worst thing you can imagine happens first - we have to save
383	* (and reinitialize) all cv's in the whole callchain :(	430	* (and reinitialize) all cv's in the whole callchain :(
384	*/	431	*/
385		432
386	EXTEND (SP, 3 + 1);
387	PUSHs (Nullsv);	433	XPUSHs (Nullsv);
388	/* this loop was inspired by pp_caller */	434	/* this loop was inspired by pp_caller */
389	for (;;)	435	for (;;)
390	{	436	{
391	while (cxix >= 0)	437	while (cxix >= 0)
392	{	438	{
393	PERL_CONTEXT *cx = &ccstk[cxix--];	439	PERL_CONTEXT *cx = &ccstk[cxix--];
394		440
395	if (CxTYPE (cx) == CXt_SUB)	441	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
396	{	442	{
397	CV *cv = cx->blk_sub.cv;	443	CV *cv = cx->blk_sub.cv;
398		444
399	if (CvDEPTH (cv))	445	if (CvDEPTH (cv))
400	{	446	{
…		…
402	PUSHs ((SV *)CvPADLIST (cv));	448	PUSHs ((SV *)CvPADLIST (cv));
403	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	449	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
404	PUSHs ((SV *)cv);	450	PUSHs ((SV *)cv);
405		451
406	CvDEPTH (cv) = 0;	452	CvDEPTH (cv) = 0;
407	get_padlist (cv);	453	get_padlist (aTHX_ cv);
408	}	454	}
409	}	455	}
410	}	456	}
411		457
412	if (top_si->si_type == PERLSI_MAIN)	458	if (top_si->si_type == PERLSI_MAIN)
413	break;	459	break;
414		460
415	top_si = top_si->si_prev;	461	top_si = top_si->si_prev;
416	ccstk = top_si->si_cxstack;	462	ccstk = top_si->si_cxstack;
417	cxix = top_si->si_cxix;	463	cxix = top_si->si_cxix;
418	}	464	}
419		465
420	PUTBACK;	466	PUTBACK;
421	}	467	}
422		468
423	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	469	c->defav = GvAV (PL_defgv);
424	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	470	c->defsv = DEFSV;
425	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	471	c->errsv = ERRSV;
426	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	472	c->irssv_sv = GvSV (irsgv);
427		473
428	#define VAR(name,type)c->name = PL_ ## name;	474	#define VAR(name,type)c->name = PL_ ## name;
429	# include "state.h"	475	# include "state.h"
430	#undef VAR	476	#undef VAR
431	}	477	}
…		…
434	* allocate various perl stacks. This is an exact copy	480	* allocate various perl stacks. This is an exact copy
435	* of perl.c:init_stacks, except that it uses less memory	481	* of perl.c:init_stacks, except that it uses less memory
436	* on the (sometimes correct) assumption that coroutines do	482	* on the (sometimes correct) assumption that coroutines do
437	* not usually need a lot of stackspace.	483	* not usually need a lot of stackspace.
438	*/	484	*/
439	#if PREFER_PERL_FUNCTIONS	485	#if CORO_PREFER_PERL_FUNCTIONS
440	# define coro_init_stacks init_stacks	486	# define coro_init_stacks init_stacks
441	#else	487	#else
442	static void	488	static void
443	coro_init_stacks ()	489	coro_init_stacks (pTHX)
444	{	490	{
445	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	491	PL_curstackinfo = new_stackinfo(64, 6);
446	PL_curstackinfo->si_type = PERLSI_MAIN;	492	PL_curstackinfo->si_type = PERLSI_MAIN;
447	PL_curstack = PL_curstackinfo->si_stack;	493	PL_curstack = PL_curstackinfo->si_stack;
448	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	494	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
449		495
450	PL_stack_base = AvARRAY(PL_curstack);	496	PL_stack_base = AvARRAY(PL_curstack);
451	PL_stack_sp = PL_stack_base;	497	PL_stack_sp = PL_stack_base;
452	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	498	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
453		499
454	New(50,PL_tmps_stack,128,SV*);	500	New(50,PL_tmps_stack,64,SV*);
455	PL_tmps_floor = -1;	501	PL_tmps_floor = -1;
456	PL_tmps_ix = -1;	502	PL_tmps_ix = -1;
457	PL_tmps_max = 128;	503	PL_tmps_max = 64;
458		504
459	New(54,PL_markstack,32,I32);	505	New(54,PL_markstack,16,I32);
460	PL_markstack_ptr = PL_markstack;	506	PL_markstack_ptr = PL_markstack;
461	PL_markstack_max = PL_markstack + 32;	507	PL_markstack_max = PL_markstack + 16;
462		508
463	#ifdef SET_MARK_OFFSET	509	#ifdef SET_MARK_OFFSET
464	SET_MARK_OFFSET;	510	SET_MARK_OFFSET;
465	#endif	511	#endif
466		512
467	New(54,PL_scopestack,32,I32);	513	New(54,PL_scopestack,16,I32);
468	PL_scopestack_ix = 0;	514	PL_scopestack_ix = 0;
469	PL_scopestack_max = 32;	515	PL_scopestack_max = 16;
470		516
471	New(54,PL_savestack,64,ANY);	517	New(54,PL_savestack,64,ANY);
472	PL_savestack_ix = 0;	518	PL_savestack_ix = 0;
473	PL_savestack_max = 64;	519	PL_savestack_max = 64;
474		520
475	#if !PERL_VERSION_ATLEAST (5,9,0)	521	#if !PERL_VERSION_ATLEAST (5,9,0)
476	New(54,PL_retstack,16,OP*);	522	New(54,PL_retstack,4,OP*);
477	PL_retstack_ix = 0;	523	PL_retstack_ix = 0;
478	PL_retstack_max = 16;	524	PL_retstack_max = 4;
479	#endif	525	#endif
480	}	526	}
481	#endif	527	#endif
482		528
483	/*	529	/*
484	* destroy the stacks, the callchain etc...	530	* destroy the stacks, the callchain etc...
485	*/	531	*/
486	static void	532	static void
487	coro_destroy_stacks ()	533	coro_destroy_stacks (pTHX)
488	{	534	{
489	if (!IN_DESTRUCT)
490	{
491	/* restore all saved variables and stuff */
492	LEAVE_SCOPE (0);
493	assert (PL_tmps_floor == -1);
494
495	/* free all temporaries */
496	FREETMPS;
497	assert (PL_tmps_ix == -1);
498
499	/* unwind all extra stacks */
500	POPSTACK_TO (PL_mainstack);
501
502	/* unwind main stack */
503	dounwind (-1);
504	}
505
506	while (PL_curstackinfo->si_next)	535	while (PL_curstackinfo->si_next)
507	PL_curstackinfo = PL_curstackinfo->si_next;	536	PL_curstackinfo = PL_curstackinfo->si_next;
508		537
509	while (PL_curstackinfo)	538	while (PL_curstackinfo)
510	{	539	{
…		…
525	#if !PERL_VERSION_ATLEAST (5,9,0)	554	#if !PERL_VERSION_ATLEAST (5,9,0)
526	Safefree (PL_retstack);	555	Safefree (PL_retstack);
527	#endif	556	#endif
528	}	557	}
529		558
		559	static size_t
		560	coro_rss (pTHX_ struct coro *coro)
		561	{
		562	size_t rss = sizeof (*coro);
		563
		564	if (coro->mainstack)
		565	{
		566	if (coro->flags & CF_RUNNING)
		567	{
		568	#define VAR(name,type)coro->name = PL_ ## name;
		569	# include "state.h"
		570	#undef VAR
		571	}
		572
		573	rss += sizeof (coro->curstackinfo);
		574	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		575	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		576	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		577	rss += coro->tmps_max * sizeof (SV *);
		578	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		579	rss += coro->scopestack_max * sizeof (I32);
		580	rss += coro->savestack_max * sizeof (ANY);
		581
		582	#if !PERL_VERSION_ATLEAST (5,9,0)
		583	rss += coro->retstack_max * sizeof (OP *);
		584	#endif
		585	}
		586
		587	return rss;
		588	}
		589
530	/** coroutine stack handling ************************************************/	590	/** coroutine stack handling ************************************************/
531		591
532	static void	592	static void
533	setup_coro (struct coro *coro)	593	coro_setup (pTHX_ struct coro *coro)
534	{	594	{
535	/*	595	/*
536	* emulate part of the perl startup here.	596	* emulate part of the perl startup here.
537	*/	597	*/
538
539	coro_init_stacks ();	598	coro_init_stacks (aTHX);
540		599
		600	PL_runops = RUNOPS_DEFAULT;
541	PL_curcop = &PL_compiling;	601	PL_curcop = &PL_compiling;
542	PL_in_eval = EVAL_NULL;	602	PL_in_eval = EVAL_NULL;
		603	PL_comppad = 0;
543	PL_curpm = 0;	604	PL_curpm = 0;
544	PL_localizing = 0;	605	PL_localizing = 0;
545	PL_dirty = 0;	606	PL_dirty = 0;
546	PL_restartop = 0;	607	PL_restartop = 0;
		608
		609	GvSV (PL_defgv) = NEWSV (0, 0);
		610	GvAV (PL_defgv) = coro->args; coro->args = 0;
		611	GvSV (PL_errgv) = NEWSV (0, 0);
		612	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		613	PL_rs = newSVsv (GvSV (irsgv));
		614	PL_defoutgv = SvREFCNT_inc (stdoutgv);
547		615
548	{	616	{
549	dSP;	617	dSP;
550	LOGOP myop;	618	LOGOP myop;
551		619
552	SvREFCNT_dec (GvAV (PL_defgv));
553	GvAV (PL_defgv) = coro->args; coro->args = 0;
554
555	Zero (&myop, 1, LOGOP);	620	Zero (&myop, 1, LOGOP);
556	myop.op_next = Nullop;	621	myop.op_next = Nullop;
557	myop.op_flags = OPf_WANT_VOID;	622	myop.op_flags = OPf_WANT_VOID;
558		623
559	PUSHMARK (SP);	624	PUSHMARK (SP);
560	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	625	XPUSHs (av_shift (GvAV (PL_defgv)));
561	PUTBACK;	626	PUTBACK;
562	PL_op = (OP *)&myop;	627	PL_op = (OP *)&myop;
563	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	628	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
564	SPAGAIN;	629	SPAGAIN;
565	}	630	}
566		631
567	ENTER; /* necessary e.g. for dounwind */	632	ENTER; /* necessary e.g. for dounwind */
568	}	633	}
569		634
570	static void	635	static void
		636	coro_destroy (pTHX_ struct coro *coro)
		637	{
		638	if (!IN_DESTRUCT)
		639	{
		640	/* restore all saved variables and stuff */
		641	LEAVE_SCOPE (0);
		642	assert (PL_tmps_floor == -1);
		643
		644	/* free all temporaries */
		645	FREETMPS;
		646	assert (PL_tmps_ix == -1);
		647
		648	/* unwind all extra stacks */
		649	POPSTACK_TO (PL_mainstack);
		650
		651	/* unwind main stack */
		652	dounwind (-1);
		653	}
		654
		655	SvREFCNT_dec (GvSV (PL_defgv));
		656	SvREFCNT_dec (GvAV (PL_defgv));
		657	SvREFCNT_dec (GvSV (PL_errgv));
		658	SvREFCNT_dec (PL_defoutgv);
		659	SvREFCNT_dec (PL_rs);
		660	SvREFCNT_dec (GvSV (irsgv));
		661
		662	SvREFCNT_dec (coro->saved_deffh);
		663	//SvREFCNT_dec (coro->throw);
		664
		665	coro_destroy_stacks (aTHX);
		666	}
		667
		668	static void
571	free_coro_mortal ()	669	free_coro_mortal (pTHX)
572	{	670	{
573	if (coro_mortal)	671	if (coro_mortal)
574	{	672	{
575	SvREFCNT_dec (coro_mortal);	673	SvREFCNT_dec (coro_mortal);
576	coro_mortal = 0;	674	coro_mortal = 0;
577	}	675	}
578	}	676	}
579		677
		678	static int
		679	runops_trace (pTHX)
		680	{
		681	COP *oldcop = 0;
		682	int oldcxix = -2;
		683	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		684	coro_cctx *cctx = coro->cctx;
		685
		686	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		687	{
		688	PERL_ASYNC_CHECK ();
		689
		690	if (cctx->flags & CC_TRACE_ALL)
		691	{
		692	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		693	{
		694	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		695	SV **bot, **top;
		696	AV *av = newAV (); /* return values */
		697	SV **cb;
		698	dSP;
		699
		700	GV *gv = CvGV (cx->blk_sub.cv);
		701	SV *fullname = sv_2mortal (newSV (0));
		702	if (isGV (gv))
		703	gv_efullname3 (fullname, gv, 0);
		704
		705	bot = PL_stack_base + cx->blk_oldsp + 1;
		706	top = cx->blk_gimme == G_ARRAY ? SP + 1
		707	: cx->blk_gimme == G_SCALAR ? bot + 1
		708	: bot;
		709
		710	while (bot < top)
		711	av_push (av, SvREFCNT_inc (*bot++));
		712
		713	PL_runops = RUNOPS_DEFAULT;
		714	ENTER;
		715	SAVETMPS;
		716	EXTEND (SP, 3);
		717	PUSHMARK (SP);
		718	PUSHs (&PL_sv_no);
		719	PUSHs (fullname);
		720	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		721	PUTBACK;
		722	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		723	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		724	SPAGAIN;
		725	FREETMPS;
		726	LEAVE;
		727	PL_runops = runops_trace;
		728	}
		729
		730	if (oldcop != PL_curcop)
		731	{
		732	oldcop = PL_curcop;
		733
		734	if (PL_curcop != &PL_compiling)
		735	{
		736	SV **cb;
		737
		738	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		739	{
		740	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		741
		742	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		743	{
		744	runops_proc_t old_runops = PL_runops;
		745	dSP;
		746	GV *gv = CvGV (cx->blk_sub.cv);
		747	SV *fullname = sv_2mortal (newSV (0));
		748
		749	if (isGV (gv))
		750	gv_efullname3 (fullname, gv, 0);
		751
		752	PL_runops = RUNOPS_DEFAULT;
		753	ENTER;
		754	SAVETMPS;
		755	EXTEND (SP, 3);
		756	PUSHMARK (SP);
		757	PUSHs (&PL_sv_yes);
		758	PUSHs (fullname);
		759	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		760	PUTBACK;
		761	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		762	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		763	SPAGAIN;
		764	FREETMPS;
		765	LEAVE;
		766	PL_runops = runops_trace;
		767	}
		768
		769	oldcxix = cxstack_ix;
		770	}
		771
		772	if (cctx->flags & CC_TRACE_LINE)
		773	{
		774	dSP;
		775
		776	PL_runops = RUNOPS_DEFAULT;
		777	ENTER;
		778	SAVETMPS;
		779	EXTEND (SP, 3);
		780	PL_runops = RUNOPS_DEFAULT;
		781	PUSHMARK (SP);
		782	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		783	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		784	PUTBACK;
		785	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		786	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		787	SPAGAIN;
		788	FREETMPS;
		789	LEAVE;
		790	PL_runops = runops_trace;
		791	}
		792	}
		793	}
		794	}
		795	}
		796
		797	TAINT_NOT;
		798	return 0;
		799	}
		800
580	/* inject a fake call to Coro::State::_cctx_init into the execution */	801	/* inject a fake call to Coro::State::_cctx_init into the execution */
		802	/* _cctx_init should be careful, as it could be called at almost any time */
		803	/* during execution of a perl program */
581	static void NOINLINE	804	static void NOINLINE
582	prepare_cctx (coro_cctx *cctx)	805	prepare_cctx (pTHX_ coro_cctx *cctx)
583	{	806	{
584	dSP;	807	dSP;
585	LOGOP myop;	808	LOGOP myop;
		809
		810	PL_top_env = &PL_start_env;
		811
		812	if (cctx->flags & CC_TRACE)
		813	PL_runops = runops_trace;
586		814
587	Zero (&myop, 1, LOGOP);	815	Zero (&myop, 1, LOGOP);
588	myop.op_next = PL_op;	816	myop.op_next = PL_op;
589	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	817	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
590		818
…		…
596	PL_op = (OP *)&myop;	824	PL_op = (OP *)&myop;
597	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	825	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
598	SPAGAIN;	826	SPAGAIN;
599	}	827	}
600		828
		829	/*
		830	* this is a _very_ stripped down perl interpreter ;)
		831	*/
601	static void	832	static void
602	coro_run (void *arg)	833	coro_run (void *arg)
603	{	834	{
		835	dTHX;
		836
604	/* coro_run is the alternative tail of transfer(), so unlock here. */	837	/* coro_run is the alternative tail of transfer(), so unlock here. */
605	UNLOCK;	838	UNLOCK;
606		839
607	/*	840	/* we now skip the entersub that lead to transfer() */
608	* this is a _very_ stripped down perl interpreter ;)	841	PL_op = PL_op->op_next;
609	*/
610	PL_top_env = &PL_start_env;
611		842
612	/* inject call to cctx_init */	843	/* inject a fake subroutine call to cctx_init */
613	prepare_cctx ((coro_cctx *)arg);	844	prepare_cctx (aTHX_ (coro_cctx *)arg);
614		845
615	/* somebody will hit me for both perl_run and PL_restartop */	846	/* somebody or something will hit me for both perl_run and PL_restartop */
616	PL_restartop = PL_op;	847	PL_restartop = PL_op;
617	perl_run (PL_curinterp);	848	perl_run (PL_curinterp);
618		849
619	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	850	/*
620	abort ();	851	* If perl-run returns we assume exit() was being called or the coro
		852	* fell off the end, which seems to be the only valid (non-bug)
		853	* reason for perl_run to return. We try to exit by jumping to the
		854	* bootstrap-time "top" top_env, as we cannot restore the "main"
		855	* coroutine as Coro has no such concept
		856	*/
		857	PL_top_env = main_top_env;
		858	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
621	}	859	}
622		860
623	static coro_cctx *	861	static coro_cctx *
624	cctx_new ()	862	cctx_new ()
625	{	863	{
626	coro_cctx *cctx;	864	coro_cctx *cctx;
		865	void *stack_start;
		866	size_t stack_size;
627		867
628	++cctx_count;	868	++cctx_count;
629		869
630	Newz (0, cctx, 1, coro_cctx);	870	Newz (0, cctx, 1, coro_cctx);
631		871
632	#if HAVE_MMAP	872	#if HAVE_MMAP
633		873
634	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	874	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
635	/* mmap supposedly does allocate-on-write for us */	875	/* mmap supposedly does allocate-on-write for us */
636	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	876	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
637		877
638	if (cctx->sptr != (void *)-1)	878	if (cctx->sptr != (void *)-1)
639	{	879	{
640	# if STACKGUARD	880	# if CORO_STACKGUARD
641	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	881	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
642	# endif	882	# endif
643	REGISTER_STACK (
644	cctx,
645	STACKGUARD * PAGESIZE + (char *)cctx->sptr,	883	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
646	cctx->ssize + (char *)cctx->sptr	884	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
647	);	885	cctx->flags |= CC_MAPPED;
648
649	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
650	}	886	}
651	else	887	else
652	#endif	888	#endif
653	{	889	{
654	cctx->ssize = -STACKSIZE * (long)sizeof (long);	890	cctx->ssize = coro_stacksize * (long)sizeof (long);
655	New (0, cctx->sptr, STACKSIZE, long);	891	New (0, cctx->sptr, coro_stacksize, long);
656		892
657	if (!cctx->sptr)	893	if (!cctx->sptr)
658	{	894	{
659	perror ("FATAL: unable to allocate stack for coroutine");	895	perror ("FATAL: unable to allocate stack for coroutine");
660	_exit (EXIT_FAILURE);	896	_exit (EXIT_FAILURE);
661	}	897	}
662		898
663	REGISTER_STACK (	899	stack_start = cctx->sptr;
664	cctx,	900	stack_size = cctx->ssize;
665	(char *)cctx->sptr,	901	}
666	(char *)cctx->sptr - cctx->ssize
667	);
668		902
		903	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
669	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	904	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
670	}
671		905
672	return cctx;	906	return cctx;
673	}	907	}
674		908
675	static void	909	static void
…		…
678	if (!cctx)	912	if (!cctx)
679	return;	913	return;
680		914
681	--cctx_count;	915	--cctx_count;
682		916
683	#if USE_VALGRIND	917	#if CORO_USE_VALGRIND
684	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	918	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
685	#endif	919	#endif
686		920
687	#if HAVE_MMAP	921	#if HAVE_MMAP
688	if (cctx->ssize > 0)	922	if (cctx->flags & CC_MAPPED)
689	munmap (cctx->sptr, cctx->ssize);	923	munmap (cctx->sptr, cctx->ssize);
690	else	924	else
691	#endif	925	#endif
692	Safefree (cctx->sptr);	926	Safefree (cctx->sptr);
693		927
694	Safefree (cctx);	928	Safefree (cctx);
695	}	929	}
696		930
697	static coro_cctx *	931	static coro_cctx *
698	cctx_get ()	932	cctx_get (pTHX)
699	{	933	{
700	coro_cctx *cctx;
701
702	if (cctx_first)	934	while (cctx_first)
703	{	935	{
704	cctx = cctx_first;	936	coro_cctx *cctx = cctx_first;
705	cctx_first = cctx->next;	937	cctx_first = cctx->next;
706	--cctx_idle;	938	--cctx_idle;
707	}	939
708	else	940	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
709	{	941	return cctx;
710	cctx = cctx_new ();	942
711	PL_op = PL_op->op_next;	943	cctx_destroy (cctx);
712	}	944	}
713		945
714	return cctx;	946	return cctx_new ();
715	}	947	}
716		948
717	static void	949	static void
718	cctx_put (coro_cctx *cctx)	950	cctx_put (coro_cctx *cctx)
719	{	951	{
…		…
722	{	954	{
723	coro_cctx *first = cctx_first;	955	coro_cctx *first = cctx_first;
724	cctx_first = first->next;	956	cctx_first = first->next;
725	--cctx_idle;	957	--cctx_idle;
726		958
727	assert (!first->inuse);
728	cctx_destroy (first);	959	cctx_destroy (first);
729	}	960	}
730		961
731	++cctx_idle;	962	++cctx_idle;
732	cctx->next = cctx_first;	963	cctx->next = cctx_first;
733	cctx_first = cctx;	964	cctx_first = cctx;
734	}	965	}
735		966
736	/** coroutine switching *****************************************************/	967	/** coroutine switching *****************************************************/
737		968
738	/* never call directly, always through the coro_state_transfer global variable */
739	static void NOINLINE	969	static void NOINLINE
		970	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		971	{
		972	if (prev != next)
		973	{
		974	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		975	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		976
		977	if (next->flags & CF_RUNNING)
		978	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		979
		980	if (next->flags & CF_DESTROYED)
		981	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		982
		983	if (PL_lex_state != LEX_NOTPARSING)
		984	croak ("Coro::State::transfer called while parsing, but this is not supported");
		985	}
		986	}
		987
		988	/* always use the TRANSFER macro */
		989	static void NOINLINE
740	transfer (struct coro *prev, struct coro *next)	990	transfer (pTHX_ struct coro *prev, struct coro *next)
741	{	991	{
742	dSTACKLEVEL;	992	dSTACKLEVEL;
743		993
744	/* sometimes transfer is only called to set idle_sp */	994	/* sometimes transfer is only called to set idle_sp */
745	if (!next)	995	if (!next)
…		…
753		1003
754	if (prev->flags & CF_NEW)	1004	if (prev->flags & CF_NEW)
755	{	1005	{
756	/* create a new empty context */	1006	/* create a new empty context */
757	Newz (0, prev->cctx, 1, coro_cctx);	1007	Newz (0, prev->cctx, 1, coro_cctx);
758	prev->cctx->inuse = 1;
759	prev->flags &= ~CF_NEW;	1008	prev->flags &= ~CF_NEW;
760	prev->flags |= CF_RUNNING;	1009	prev->flags |= CF_RUNNING;
761	}	1010	}
762
763	/*TODO: must not croak here */
764	if (!prev->flags & CF_RUNNING)
765	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
766
767	if (next->flags & CF_RUNNING)
768	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
769
770	if (next->flags & CF_DESTROYED)
771	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
772		1011
773	prev->flags &= ~CF_RUNNING;	1012	prev->flags &= ~CF_RUNNING;
774	next->flags |= CF_RUNNING;	1013	next->flags |= CF_RUNNING;
775		1014
776	LOCK;	1015	LOCK;
…		…
778	if (next->flags & CF_NEW)	1017	if (next->flags & CF_NEW)
779	{	1018	{
780	/* need to start coroutine */	1019	/* need to start coroutine */
781	next->flags &= ~CF_NEW;	1020	next->flags &= ~CF_NEW;
782	/* first get rid of the old state */	1021	/* first get rid of the old state */
783	save_perl (prev);	1022	save_perl (aTHX_ prev);
784	/* setup coroutine call */	1023	/* setup coroutine call */
785	setup_coro (next);	1024	coro_setup (aTHX_ next);
786	/* need a new stack */
787	assert (!next->cctx);
788	}	1025	}
789	else	1026	else
790	{	1027	{
791	/* coroutine already started */	1028	/* coroutine already started */
792	save_perl (prev);	1029	save_perl (aTHX_ prev);
793	load_perl (next);	1030	load_perl (aTHX_ next);
794	}	1031	}
795		1032
796	prev__cctx = prev->cctx;	1033	prev__cctx = prev->cctx;
797		1034
798	/* possibly "free" the cctx */	1035	/* possibly "free" the cctx */
799	if (prev__cctx->idle_sp == STACKLEVEL)	1036	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
800	{	1037	{
801	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1038	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
802	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1039	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
803		1040
804	prev->cctx = 0;	1041	prev->cctx = 0;
805		1042
806	cctx_put (prev__cctx);	1043	cctx_put (prev__cctx);
807	prev__cctx->inuse = 0;
808	}	1044	}
809		1045
		1046	++next->usecount;
		1047
810	if (!next->cctx)	1048	if (!next->cctx)
811	{
812	next->cctx = cctx_get ();	1049	next->cctx = cctx_get (aTHX);
813	assert (!next->cctx->inuse);
814	next->cctx->inuse = 1;
815	}
816		1050
817	if (prev__cctx != next->cctx)	1051	if (prev__cctx != next->cctx)
818	{	1052	{
819	prev__cctx->top_env = PL_top_env;	1053	prev__cctx->top_env = PL_top_env;
820	PL_top_env = next->cctx->top_env;	1054	PL_top_env = next->cctx->top_env;
821	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1055	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
822	}	1056	}
823		1057
824	free_coro_mortal ();	1058	free_coro_mortal (aTHX);
825	UNLOCK;	1059	UNLOCK;
826	}	1060	}
827	}	1061	}
828		1062
829	struct transfer_args	1063	struct transfer_args
830	{	1064	{
831	struct coro *prev, *next;	1065	struct coro *prev, *next;
832	};	1066	};
833		1067
834	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1068	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1069	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
835		1070
836	/** high level stuff ********************************************************/	1071	/** high level stuff ********************************************************/
837		1072
838	static int	1073	static int
839	coro_state_destroy (struct coro *coro)	1074	coro_state_destroy (pTHX_ struct coro *coro)
840	{	1075	{
841	if (coro->flags & CF_DESTROYED)	1076	if (coro->flags & CF_DESTROYED)
842	return 0;	1077	return 0;
843		1078
844	coro->flags |= CF_DESTROYED;	1079	coro->flags |= CF_DESTROYED;
…		…
856		1091
857	if (coro->mainstack && coro->mainstack != main_mainstack)	1092	if (coro->mainstack && coro->mainstack != main_mainstack)
858	{	1093	{
859	struct coro temp;	1094	struct coro temp;
860		1095
861	assert (!(coro->flags & CF_RUNNING));
862
863	Zero (&temp, 1, struct coro);
864	temp.save = CORO_SAVE_ALL;
865
866	if (coro->flags & CF_RUNNING)	1096	if (coro->flags & CF_RUNNING)
867	croak ("FATAL: tried to destroy currently running coroutine");	1097	croak ("FATAL: tried to destroy currently running coroutine");
868		1098
869	save_perl (&temp);	1099	save_perl (aTHX_ &temp);
870	load_perl (coro);	1100	load_perl (aTHX_ coro);
871		1101
872	coro_destroy_stacks ();	1102	coro_destroy (aTHX_ coro);
873		1103
874	load_perl (&temp); /* this will get rid of defsv etc.. */	1104	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
875		1105
876	coro->mainstack = 0;	1106	coro->mainstack = 0;
877	}	1107	}
878		1108
879	cctx_destroy (coro->cctx);	1109	cctx_destroy (coro->cctx);
880	SvREFCNT_dec (coro->args);	1110	SvREFCNT_dec (coro->args);
881		1111
		1112	if (coro->next) coro->next->prev = coro->prev;
		1113	if (coro->prev) coro->prev->next = coro->next;
		1114	if (coro == coro_first) coro_first = coro->next;
		1115
882	return 1;	1116	return 1;
883	}	1117	}
884		1118
885	static int	1119	static int
886	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1120	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
887	{	1121	{
888	struct coro *coro = (struct coro *)mg->mg_ptr;	1122	struct coro *coro = (struct coro *)mg->mg_ptr;
889	mg->mg_ptr = 0;	1123	mg->mg_ptr = 0;
890		1124
		1125	coro->hv = 0;
		1126
891	if (--coro->refcnt < 0)	1127	if (--coro->refcnt < 0)
892	{	1128	{
893	coro_state_destroy (coro);	1129	coro_state_destroy (aTHX_ coro);
894	Safefree (coro);	1130	Safefree (coro);
895	}	1131	}
896		1132
897	return 0;	1133	return 0;
898	}	1134	}
…		…
916	#else	1152	#else
917	# define MGf_DUP 0	1153	# define MGf_DUP 0
918	#endif	1154	#endif
919	};	1155	};
920		1156
921	static struct coro *
922	SvSTATE (SV *coro)
923	{
924	HV *stash;
925	MAGIC *mg;
926
927	if (SvROK (coro))
928	coro = SvRV (coro);
929
930	stash = SvSTASH (coro);
931	if (stash != coro_stash && stash != coro_state_stash)
932	{
933	/* very slow, but rare, check */
934	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
935	croak ("Coro::State object required");
936	}
937
938	mg = SvMAGIC (coro);
939	assert (mg->mg_type == PERL_MAGIC_ext);
940	return (struct coro *)mg->mg_ptr;
941	}
942
943	static void	1157	static void
944	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1158	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
945	{	1159	{
946	ta->prev = SvSTATE (prev_sv);	1160	ta->prev = SvSTATE (prev_sv);
947	ta->next = SvSTATE (next_sv);	1161	ta->next = SvSTATE (next_sv);
		1162	TRANSFER_CHECK (*ta);
948	}	1163	}
949		1164
950	static void	1165	static void
951	api_transfer (SV *prev_sv, SV *next_sv)	1166	api_transfer (SV *prev_sv, SV *next_sv)
952	{	1167	{
		1168	dTHX;
953	struct transfer_args ta;	1169	struct transfer_args ta;
954		1170
955	prepare_transfer (&ta, prev_sv, next_sv);	1171	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
956	TRANSFER (ta);	1172	TRANSFER (ta);
957	}	1173	}
958		1174
959	static int
960	api_save (SV *coro_sv, int new_save)
961	{
962	struct coro *coro = SvSTATE (coro_sv);
963	int old_save = coro->save;
964
965	if (new_save >= 0)
966	coro->save = new_save;
967
968	return old_save;
969	}
970
971	/** Coro ********************************************************************/	1175	/** Coro ********************************************************************/
972		1176
973	static void	1177	static void
974	coro_enq (SV *coro_sv)	1178	coro_enq (pTHX_ SV *coro_sv)
975	{	1179	{
976	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1180	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
977	}	1181	}
978		1182
979	static SV *	1183	static SV *
980	coro_deq (int min_prio)	1184	coro_deq (pTHX_ int min_prio)
981	{	1185	{
982	int prio = PRIO_MAX - PRIO_MIN;	1186	int prio = PRIO_MAX - PRIO_MIN;
983		1187
984	min_prio -= PRIO_MIN;	1188	min_prio -= PRIO_MIN;
985	if (min_prio < 0)	1189	if (min_prio < 0)
…		…
993	}	1197	}
994		1198
995	static int	1199	static int
996	api_ready (SV *coro_sv)	1200	api_ready (SV *coro_sv)
997	{	1201	{
		1202	dTHX;
998	struct coro *coro;	1203	struct coro *coro;
999		1204
1000	if (SvROK (coro_sv))	1205	if (SvROK (coro_sv))
1001	coro_sv = SvRV (coro_sv);	1206	coro_sv = SvRV (coro_sv);
1002		1207
…		…
1006	return 0;	1211	return 0;
1007		1212
1008	coro->flags |= CF_READY;	1213	coro->flags |= CF_READY;
1009		1214
1010	LOCK;	1215	LOCK;
1011	coro_enq (SvREFCNT_inc (coro_sv));	1216	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1012	++coro_nready;	1217	++coro_nready;
1013	UNLOCK;	1218	UNLOCK;
1014		1219
1015	return 1;	1220	return 1;
1016	}	1221	}
1017		1222
1018	static int	1223	static int
1019	api_is_ready (SV *coro_sv)	1224	api_is_ready (SV *coro_sv)
1020	{	1225	{
		1226	dTHX;
1021	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1227	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1022	}	1228	}
1023		1229
1024	static void	1230	static void
1025	prepare_schedule (struct transfer_args *ta)	1231	prepare_schedule (pTHX_ struct transfer_args *ta)
1026	{	1232	{
1027	SV *prev_sv, *next_sv;	1233	SV *prev_sv, *next_sv;
1028		1234
1029	for (;;)	1235	for (;;)
1030	{	1236	{
1031	LOCK;	1237	LOCK;
1032	next_sv = coro_deq (PRIO_MIN);	1238	next_sv = coro_deq (aTHX_ PRIO_MIN);
1033		1239
1034	/* nothing to schedule: call the idle handler */	1240	/* nothing to schedule: call the idle handler */
1035	if (!next_sv)	1241	if (!next_sv)
1036	{	1242	{
1037	dSP;	1243	dSP;
…		…
1065	break;	1271	break;
1066	}	1272	}
1067		1273
1068	/* free this only after the transfer */	1274	/* free this only after the transfer */
1069	prev_sv = SvRV (coro_current);	1275	prev_sv = SvRV (coro_current);
1070	SvRV_set (coro_current, next_sv);
1071	ta->prev = SvSTATE (prev_sv);	1276	ta->prev = SvSTATE (prev_sv);
1072		1277	TRANSFER_CHECK (*ta);
1073	assert (ta->next->flags & CF_READY);	1278	assert (ta->next->flags & CF_READY);
1074	ta->next->flags &= ~CF_READY;	1279	ta->next->flags &= ~CF_READY;
		1280	SvRV_set (coro_current, next_sv);
1075		1281
1076	LOCK;	1282	LOCK;
1077	free_coro_mortal ();	1283	free_coro_mortal (aTHX);
1078	coro_mortal = prev_sv;	1284	coro_mortal = prev_sv;
1079	UNLOCK;	1285	UNLOCK;
1080	}	1286	}
1081		1287
1082	static void	1288	static void
1083	prepare_cede (struct transfer_args *ta)	1289	prepare_cede (pTHX_ struct transfer_args *ta)
1084	{	1290	{
1085	api_ready (coro_current);	1291	api_ready (coro_current);
1086	prepare_schedule (ta);	1292	prepare_schedule (aTHX_ ta);
1087	}	1293	}
1088		1294
1089	static int	1295	static int
1090	prepare_cede_notself (struct transfer_args *ta)	1296	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1091	{	1297	{
1092	if (coro_nready)	1298	if (coro_nready)
1093	{	1299	{
1094	SV *prev = SvRV (coro_current);	1300	SV *prev = SvRV (coro_current);
1095	prepare_schedule (ta);	1301	prepare_schedule (aTHX_ ta);
1096	api_ready (prev);	1302	api_ready (prev);
1097	return 1;	1303	return 1;
1098	}	1304	}
1099	else	1305	else
1100	return 0;	1306	return 0;
1101	}	1307	}
1102		1308
1103	static void	1309	static void
1104	api_schedule (void)	1310	api_schedule (void)
1105	{	1311	{
		1312	dTHX;
1106	struct transfer_args ta;	1313	struct transfer_args ta;
1107		1314
1108	prepare_schedule (&ta);	1315	prepare_schedule (aTHX_ &ta);
1109	TRANSFER (ta);	1316	TRANSFER (ta);
1110	}	1317	}
1111		1318
1112	static int	1319	static int
1113	api_cede (void)	1320	api_cede (void)
1114	{	1321	{
		1322	dTHX;
1115	struct transfer_args ta;	1323	struct transfer_args ta;
1116		1324
1117	prepare_cede (&ta);	1325	prepare_cede (aTHX_ &ta);
1118		1326
1119	if (ta.prev != ta.next)	1327	if (ta.prev != ta.next)
1120	{	1328	{
1121	TRANSFER (ta);	1329	TRANSFER (ta);
1122	return 1;	1330	return 1;
…		…
1126	}	1334	}
1127		1335
1128	static int	1336	static int
1129	api_cede_notself (void)	1337	api_cede_notself (void)
1130	{	1338	{
		1339	dTHX;
1131	struct transfer_args ta;	1340	struct transfer_args ta;
1132		1341
1133	if (prepare_cede_notself (&ta))	1342	if (prepare_cede_notself (aTHX_ &ta))
1134	{	1343	{
1135	TRANSFER (ta);	1344	TRANSFER (ta);
1136	return 1;	1345	return 1;
1137	}	1346	}
1138	else	1347	else
1139	return 0;	1348	return 0;
1140	}	1349	}
1141		1350
		1351	static void
		1352	api_trace (SV *coro_sv, int flags)
		1353	{
		1354	dTHX;
		1355	struct coro *coro = SvSTATE (coro_sv);
		1356
		1357	if (flags & CC_TRACE)
		1358	{
		1359	if (!coro->cctx)
		1360	coro->cctx = cctx_new ();
		1361	else if (!(coro->cctx->flags & CC_TRACE))
		1362	croak ("cannot enable tracing on coroutine with custom stack");
		1363
		1364	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1365	}
		1366	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1367	{
		1368	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1369
		1370	if (coro->flags & CF_RUNNING)
		1371	PL_runops = RUNOPS_DEFAULT;
		1372	else
		1373	coro->runops = RUNOPS_DEFAULT;
		1374	}
		1375	}
		1376
1142	MODULE = Coro::State PACKAGE = Coro::State	1377	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1143		1378
1144	PROTOTYPES: DISABLE	1379	PROTOTYPES: DISABLE
1145		1380
1146	BOOT:	1381	BOOT:
1147	{	1382	{
1148	#ifdef USE_ITHREADS	1383	#ifdef USE_ITHREADS
1149	MUTEX_INIT (&coro_mutex);	1384	MUTEX_INIT (&coro_mutex);
1150	#endif	1385	#endif
1151	BOOT_PAGESIZE;	1386	BOOT_PAGESIZE;
1152		1387
		1388	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1389	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1390
1153	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1391	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1154		1392
		1393	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1394	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1155	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1395	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1156	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1157	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1158	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1159	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1160		1397
1161	main_mainstack = PL_mainstack;	1398	main_mainstack = PL_mainstack;
		1399	main_top_env = PL_top_env;
		1400
		1401	while (main_top_env->je_prev)
		1402	main_top_env = main_top_env->je_prev;
1162		1403
1163	coroapi.ver = CORO_API_VERSION;	1404	coroapi.ver = CORO_API_VERSION;
1164	coroapi.transfer = api_transfer;	1405	coroapi.transfer = api_transfer;
1165		1406
1166	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1407	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1173	struct coro *coro;	1414	struct coro *coro;
1174	HV *hv;	1415	HV *hv;
1175	int i;	1416	int i;
1176		1417
1177	Newz (0, coro, 1, struct coro);	1418	Newz (0, coro, 1, struct coro);
1178	coro->args = newAV ();	1419	coro->args = newAV ();
1179	coro->save = CORO_SAVE_ALL;
1180	coro->flags = CF_NEW;	1420	coro->flags = CF_NEW;
1181		1421
		1422	if (coro_first) coro_first->prev = coro;
		1423	coro->next = coro_first;
		1424	coro_first = coro;
		1425
1182	hv = newHV ();	1426	coro->hv = hv = newHV ();
1183	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1427	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1184	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1428	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1185		1429
1186	for (i = 1; i < items; i++)	1430	for (i = 1; i < items; i++)
1187	av_push (coro->args, newSVsv (ST (i)));	1431	av_push (coro->args, newSVsv (ST (i)));
1188	}	1432	}
1189	OUTPUT:	1433	OUTPUT:
1190	RETVAL	1434	RETVAL
1191		1435
1192	int	1436	# these not obviously related functions are all rolled into the same xs
1193	save (SV *coro, int new_save = -1)	1437	# function to increase chances that they all will call transfer with the same
1194	CODE:	1438	# stack offset
1195	RETVAL = api_save (coro, new_save);
1196	OUTPUT:
1197	RETVAL
1198
1199	void	1439	void
1200	_set_stacklevel (...)	1440	_set_stacklevel (...)
1201	ALIAS:	1441	ALIAS:
1202	Coro::State::transfer = 1	1442	Coro::State::transfer = 1
1203	Coro::schedule = 2	1443	Coro::schedule = 2
…		…
1216		1456
1217	case 1:	1457	case 1:
1218	if (items != 2)	1458	if (items != 2)
1219	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1459	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1220		1460
1221	prepare_transfer (&ta, ST (0), ST (1));	1461	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1222	break;	1462	break;
1223		1463
1224	case 2:	1464	case 2:
1225	prepare_schedule (&ta);	1465	prepare_schedule (aTHX_ &ta);
1226	break;	1466	break;
1227		1467
1228	case 3:	1468	case 3:
1229	prepare_cede (&ta);	1469	prepare_cede (aTHX_ &ta);
1230	break;	1470	break;
1231		1471
1232	case 4:	1472	case 4:
1233	if (!prepare_cede_notself (&ta))	1473	if (!prepare_cede_notself (aTHX_ &ta))
1234	XSRETURN_EMPTY;	1474	XSRETURN_EMPTY;
1235		1475
1236	break;	1476	break;
1237	}	1477	}
1238		1478
…		…
1244	}	1484	}
1245		1485
1246	bool	1486	bool
1247	_destroy (SV *coro_sv)	1487	_destroy (SV *coro_sv)
1248	CODE:	1488	CODE:
1249	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1489	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1250	OUTPUT:	1490	OUTPUT:
1251	RETVAL	1491	RETVAL
1252		1492
1253	void	1493	void
1254	_exit (code)	1494	_exit (code)
…		…
1256	PROTOTYPE: $	1496	PROTOTYPE: $
1257	CODE:	1497	CODE:
1258	_exit (code);	1498	_exit (code);
1259		1499
1260	int	1500	int
		1501	cctx_stacksize (int new_stacksize = 0)
		1502	CODE:
		1503	RETVAL = coro_stacksize;
		1504	if (new_stacksize)
		1505	coro_stacksize = new_stacksize;
		1506	OUTPUT:
		1507	RETVAL
		1508
		1509	int
1261	cctx_count ()	1510	cctx_count ()
1262	CODE:	1511	CODE:
1263	RETVAL = cctx_count;	1512	RETVAL = cctx_count;
1264	OUTPUT:	1513	OUTPUT:
1265	RETVAL	1514	RETVAL
…		…
1269	CODE:	1518	CODE:
1270	RETVAL = cctx_idle;	1519	RETVAL = cctx_idle;
1271	OUTPUT:	1520	OUTPUT:
1272	RETVAL	1521	RETVAL
1273		1522
		1523	void
		1524	list ()
		1525	PPCODE:
		1526	{
		1527	struct coro *coro;
		1528	for (coro = coro_first; coro; coro = coro->next)
		1529	if (coro->hv)
		1530	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1531	}
		1532
		1533	void
		1534	call (Coro::State coro, SV *coderef)
		1535	ALIAS:
		1536	eval = 1
		1537	CODE:
		1538	{
		1539	if (coro->mainstack)
		1540	{
		1541	struct coro temp;
		1542	Zero (&temp, 1, struct coro);
		1543
		1544	if (!(coro->flags & CF_RUNNING))
		1545	{
		1546	save_perl (aTHX_ &temp);
		1547	load_perl (aTHX_ coro);
		1548	}
		1549
		1550	{
		1551	dSP;
		1552	ENTER;
		1553	SAVETMPS;
		1554	PUSHMARK (SP);
		1555	PUTBACK;
		1556	if (ix)
		1557	eval_sv (coderef, 0);
		1558	else
		1559	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1560	SPAGAIN;
		1561	FREETMPS;
		1562	LEAVE;
		1563	PUTBACK;
		1564	}
		1565
		1566	if (!(coro->flags & CF_RUNNING))
		1567	{
		1568	save_perl (aTHX_ coro);
		1569	load_perl (aTHX_ &temp);
		1570	}
		1571	}
		1572	}
		1573
		1574	SV *
		1575	is_ready (Coro::State coro)
		1576	PROTOTYPE: $
		1577	ALIAS:
		1578	is_ready = CF_READY
		1579	is_running = CF_RUNNING
		1580	is_new = CF_NEW
		1581	is_destroyed = CF_DESTROYED
		1582	CODE:
		1583	RETVAL = boolSV (coro->flags & ix);
		1584	OUTPUT:
		1585	RETVAL
		1586
		1587	void
		1588	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1589
		1590	SV *
		1591	has_stack (Coro::State coro)
		1592	PROTOTYPE: $
		1593	CODE:
		1594	RETVAL = boolSV (!!coro->cctx);
		1595	OUTPUT:
		1596	RETVAL
		1597
		1598	int
		1599	is_traced (Coro::State coro)
		1600	PROTOTYPE: $
		1601	CODE:
		1602	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1603	OUTPUT:
		1604	RETVAL
		1605
		1606	IV
		1607	rss (Coro::State coro)
		1608	PROTOTYPE: $
		1609	ALIAS:
		1610	usecount = 1
		1611	CODE:
		1612	switch (ix)
		1613	{
		1614	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1615	case 1: RETVAL = coro->usecount; break;
		1616	}
		1617	OUTPUT:
		1618	RETVAL
		1619
		1620
1274	MODULE = Coro::State PACKAGE = Coro	1621	MODULE = Coro::State PACKAGE = Coro
1275		1622
1276	BOOT:	1623	BOOT:
1277	{	1624	{
1278	int i;	1625	int i;
		1626
		1627	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1628	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1629	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1630
		1631	coro_current = get_sv ("Coro::current", FALSE);
		1632	SvREADONLY_on (coro_current);
1279		1633
1280	coro_stash = gv_stashpv ("Coro", TRUE);	1634	coro_stash = gv_stashpv ("Coro", TRUE);
1281		1635
1282	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1636	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1283	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1637	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1284	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1638	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1285	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1639	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1286	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1640	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1287	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1641	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1288		1642
1289	coro_current = get_sv ("Coro::current", FALSE);
1290	SvREADONLY_on (coro_current);
1291
1292	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1643	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1293	coro_ready[i] = newAV ();	1644	coro_ready[i] = newAV ();
1294		1645
1295	{	1646	{
1296	SV *sv = perl_get_sv("Coro::API", 1);	1647	SV *sv = perl_get_sv("Coro::API", 1);
1297		1648
1298	coroapi.schedule = api_schedule;	1649	coroapi.schedule = api_schedule;
1299	coroapi.save = api_save;
1300	coroapi.cede = api_cede;	1650	coroapi.cede = api_cede;
1301	coroapi.cede_notself = api_cede_notself;	1651	coroapi.cede_notself = api_cede_notself;
1302	coroapi.ready = api_ready;	1652	coroapi.ready = api_ready;
1303	coroapi.is_ready = api_is_ready;	1653	coroapi.is_ready = api_is_ready;
1304	coroapi.nready = &coro_nready;	1654	coroapi.nready = &coro_nready;
…		…
1345	CODE:	1695	CODE:
1346	RETVAL = boolSV (api_ready (self));	1696	RETVAL = boolSV (api_ready (self));
1347	OUTPUT:	1697	OUTPUT:
1348	RETVAL	1698	RETVAL
1349		1699
1350	SV *
1351	is_ready (SV *self)
1352	PROTOTYPE: $
1353	CODE:
1354	RETVAL = boolSV (api_is_ready (self));
1355	OUTPUT:
1356	RETVAL
1357
1358	int	1700	int
1359	nready (...)	1701	nready (...)
1360	PROTOTYPE:	1702	PROTOTYPE:
1361	CODE:	1703	CODE:
1362	RETVAL = coro_nready;	1704	RETVAL = coro_nready;
1363	OUTPUT:	1705	OUTPUT:
1364	RETVAL	1706	RETVAL
1365		1707
		1708	# for async_pool speedup
		1709	void
		1710	_pool_1 (SV *cb)
		1711	CODE:
		1712	{
		1713	struct coro *coro = SvSTATE (coro_current);
		1714	HV *hv = (HV *)SvRV (coro_current);
		1715	AV *defav = GvAV (PL_defgv);
		1716	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1717	AV *invoke_av;
		1718	int i, len;
		1719
		1720	if (!invoke)
		1721	croak ("\3terminate\2\n");
		1722
		1723	SvREFCNT_dec (coro->saved_deffh);
		1724	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1725
		1726	hv_store (hv, "desc", sizeof ("desc") - 1,
		1727	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1728
		1729	invoke_av = (AV *)SvRV (invoke);
		1730	len = av_len (invoke_av);
		1731
		1732	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1733
		1734	if (len > 0)
		1735	{
		1736	av_fill (defav, len - 1);
		1737	for (i = 0; i < len; ++i)
		1738	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1739	}
		1740
		1741	SvREFCNT_dec (invoke);
		1742	}
		1743
		1744	void
		1745	_pool_2 (SV *cb)
		1746	CODE:
		1747	{
		1748	struct coro *coro = SvSTATE (coro_current);
		1749
		1750	sv_setsv (cb, &PL_sv_undef);
		1751
		1752	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1753	coro->saved_deffh = 0;
		1754
		1755	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1756	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1757	croak ("\3terminate\2\n");
		1758
		1759	av_clear (GvAV (PL_defgv));
		1760	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1761	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1762
		1763	coro->prio = 0;
		1764
		1765	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1766	api_trace (coro_current, 0);
		1767
		1768	av_push (av_async_pool, newSVsv (coro_current));
		1769	}
		1770
		1771
1366	MODULE = Coro::State PACKAGE = Coro::AIO	1772	MODULE = Coro::State PACKAGE = Coro::AIO
1367		1773
1368	SV *	1774	SV *
1369	_get_state ()	1775	_get_state ()
1370	CODE:	1776	CODE:

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