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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.131 by root, Fri Dec 29 11:37:49 2006 UTC vs.
Revision 1.184 by root, Thu Oct 4 13:45:56 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
		2
		3	#define PERL_NO_GET_CONTEXT
2		4
3	#include "EXTERN.h"	5	#include "EXTERN.h"
4	#include "perl.h"	6	#include "perl.h"
5	#include "XSUB.h"	7	#include "XSUB.h"
6		8
…		…
31	#else	33	#else
32	# define PAGESIZE 0	34	# define PAGESIZE 0
33	# define BOOT_PAGESIZE (void)0	35	# define BOOT_PAGESIZE (void)0
34	#endif	36	#endif
35		37
36	#if USE_VALGRIND	38	#if CORO_USE_VALGRIND
37	# include <valgrind/valgrind.h>	39	# include <valgrind/valgrind.h>
		40	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
		41	#else
		42	# define REGISTER_STACK(cctx,start,end)
38	#endif	43	#endif
39		44
40	/* the maximum number of idle cctx that will be pooled */	45	/* the maximum number of idle cctx that will be pooled */
41	#define MAX_IDLE_CCTX 8	46	#define MAX_IDLE_CCTX 8
42		47
…		…
71	#ifndef SvRV_set	76	#ifndef SvRV_set
72	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
73	#endif	78	#endif
74		79
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	81	# undef CORO_STACKGUARD
77	#endif	82	#endif
78		83
79	#ifndef STACKGUARD	84	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	85	# define CORO_STACKGUARD 0
81	#endif	86	#endif
82		87
83	/* prefer perl internal functions over our own? */	88	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	89	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	90	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	91	#endif
87		92
88	/* The next macro should declare a variable stacklevel that contains and approximation	93	/* The next macros try to return the current stack pointer, in an as
89	* to the current C stack pointer. Its property is that it changes with each call	94	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	95	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	96	#define STACKLEVEL ((void *)&stacklevel)
93		97
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	98	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		99
96	#if __GNUC__ >= 3	100	#if __GNUC__ >= 3
…		…
112	#else	116	#else
113	# define LOCK (void)0	117	# define LOCK (void)0
114	# define UNLOCK (void)0	118	# define UNLOCK (void)0
115	#endif	119	#endif
116		120
		121	/* helper storage struct for Coro::AIO */
117	struct io_state	122	struct io_state
118	{	123	{
119	int errorno;	124	int errorno;
120	I32 laststype;	125	I32 laststype;
121	int laststatval;	126	int laststatval;
122	Stat_t statcache;	127	Stat_t statcache;
123	};	128	};
124		129
		130	static size_t coro_stacksize = CORO_STACKSIZE;
125	static struct CoroAPI coroapi;	131	static struct CoroAPI coroapi;
126	static AV *main_mainstack; /* used to differentiate between $main and others */	132	static AV *main_mainstack; /* used to differentiate between $main and others */
		133	static JMPENV *main_top_env;
127	static HV *coro_state_stash, *coro_stash;	134	static HV *coro_state_stash, *coro_stash;
128	static SV *coro_mortal; /* will be freed after next transfer */	135	static SV *coro_mortal; /* will be freed after next transfer */
129		136
		137	static GV *irsgv; /* $/ */
		138
		139	/* async_pool helper stuff */
		140	static SV *sv_pool_rss;
		141	static SV *sv_pool_size;
		142	static AV *av_async_pool;
		143
130	static struct coro_cctx *cctx_first;	144	static struct coro_cctx *cctx_first;
131	static int cctx_count, cctx_idle;	145	static int cctx_count, cctx_idle;
		146
		147	enum {
		148	CC_MAPPED = 0x01,
		149	CC_NOREUSE = 0x02, /* throw this away after tracing */
		150	CC_TRACE = 0x04,
		151	CC_TRACE_SUB = 0x08, /* trace sub calls */
		152	CC_TRACE_LINE = 0x10, /* trace each statement */
		153	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		154	};
132		155
133	/* this is a structure representing a c-level coroutine */	156	/* this is a structure representing a c-level coroutine */
134	typedef struct coro_cctx {	157	typedef struct coro_cctx {
135	struct coro_cctx *next;	158	struct coro_cctx *next;
136		159
137	/* the stack */	160	/* the stack */
138	void *sptr;	161	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	162	size_t ssize;
140		163
141	/* cpu state */	164	/* cpu state */
142	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	165	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
		166	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
143	JMPENV *top_env;	167	JMPENV *top_env;
144	coro_context cctx;	168	coro_context cctx;
145		169
146	int inuse;
147
148	#if USE_VALGRIND	170	#if CORO_USE_VALGRIND
149	int valgrind_id;	171	int valgrind_id;
150	#endif	172	#endif
		173	unsigned char flags;
151	} coro_cctx;	174	} coro_cctx;
152		175
153	enum {	176	enum {
154	CF_RUNNING = 0x0001, /* coroutine is running */	177	CF_RUNNING = 0x0001, /* coroutine is running */
155	CF_READY = 0x0002, /* coroutine is ready */	178	CF_READY = 0x0002, /* coroutine is ready */
156	CF_NEW = 0x0004, /* ahs never been switched to */	179	CF_NEW = 0x0004, /* has never been switched to */
		180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
157	};	181	};
158		182
159	/* this is a structure representing a perl-level coroutine */	183	/* this is a structure representing a perl-level coroutine */
160	struct coro {	184	struct coro {
161	/* the c coroutine allocated to this perl coroutine, if any */	185	/* the c coroutine allocated to this perl coroutine, if any */
162	coro_cctx *cctx;	186	coro_cctx *cctx;
163		187
164	/* data associated with this coroutine (initial args) */	188	/* data associated with this coroutine (initial args) */
165	AV *args;	189	AV *args;
166	int refcnt;	190	int refcnt;
167	int save; /* CORO_SAVE flags */
168	int flags; /* CF_ flags */	191	int flags; /* CF_ flags */
169		192
170	/* optionally saved, might be zero */	193	/* optionally saved, might be zero */
171	AV *defav; /* @_ */	194	AV *defav; /* @_ */
172	SV *defsv; /* $_ */	195	SV *defsv; /* $_ */
173	SV *errsv; /* $@ */	196	SV *errsv; /* $@ */
		197	SV *deffh; /* default filehandle */
174	SV *irssv; /* $/ */	198	SV *irssv; /* $/ */
175	SV *irssv_sv; /* real $/ cache */	199	SV *irssv_sv; /* real $/ cache */
176		200
177	#define VAR(name,type) type name;	201	#define VAR(name,type) type name;
178	# include "state.h"	202	# include "state.h"
179	#undef VAR	203	#undef VAR
180		204
		205	/* statistics */
		206	int usecount; /* number of transfers to this coro */
		207
181	/* coro process data */	208	/* coro process data */
182	int prio;	209	int prio;
		210	//SV *throw;
		211
		212	/* async_pool */
		213	SV *saved_deffh;
		214
		215	/* linked list */
		216	struct coro *next, *prev;
		217	HV *hv; /* the perl hash associated with this coro, if any */
183	};	218	};
184		219
185	typedef struct coro *Coro__State;	220	typedef struct coro *Coro__State;
186	typedef struct coro *Coro__State_or_hashref;	221	typedef struct coro *Coro__State_or_hashref;
187		222
		223	/** Coro ********************************************************************/
		224
		225	#define PRIO_MAX 3
		226	#define PRIO_HIGH 1
		227	#define PRIO_NORMAL 0
		228	#define PRIO_LOW -1
		229	#define PRIO_IDLE -3
		230	#define PRIO_MIN -4
		231
		232	/* for Coro.pm */
		233	static SV *coro_current;
		234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		235	static int coro_nready;
		236	static struct coro *coro_first;
		237
		238	/** lowlevel stuff **********************************************************/
		239
188	static AV *	240	static AV *
189	coro_clone_padlist (CV *cv)	241	coro_clone_padlist (pTHX_ CV *cv)
190	{	242	{
191	AV *padlist = CvPADLIST (cv);	243	AV *padlist = CvPADLIST (cv);
192	AV *newpadlist, *newpad;	244	AV *newpadlist, *newpad;
193		245
194	newpadlist = newAV ();	246	newpadlist = newAV ();
…		…
206		258
207	return newpadlist;	259	return newpadlist;
208	}	260	}
209		261
210	static void	262	static void
211	free_padlist (AV *padlist)	263	free_padlist (pTHX_ AV *padlist)
212	{	264	{
213	/* may be during global destruction */	265	/* may be during global destruction */
214	if (SvREFCNT (padlist))	266	if (SvREFCNT (padlist))
215	{	267	{
216	I32 i = AvFILLp (padlist);	268	I32 i = AvFILLp (padlist);
…		…
237	AV *padlist;	289	AV *padlist;
238	AV *av = (AV *)mg->mg_obj;	290	AV *av = (AV *)mg->mg_obj;
239		291
240	/* casting is fun. */	292	/* casting is fun. */
241	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
242	free_padlist (padlist);	294	free_padlist (aTHX_ padlist);
243		295
244	SvREFCNT_dec (av);	296	SvREFCNT_dec (av);
245		297
246	return 0;	298	return 0;
247	}	299	}
…		…
255	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
256	? SvMAGIC (cv) \	308	? SvMAGIC (cv) \
257	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
258	: 0	310	: 0
259		311
		312	static struct coro *
		313	SvSTATE_ (pTHX_ SV *coro)
		314	{
		315	HV *stash;
		316	MAGIC *mg;
		317
		318	if (SvROK (coro))
		319	coro = SvRV (coro);
		320
		321	if (SvTYPE (coro) != SVt_PVHV)
		322	croak ("Coro::State object required");
		323
		324	stash = SvSTASH (coro);
		325	if (stash != coro_stash && stash != coro_state_stash)
		326	{
		327	/* very slow, but rare, check */
		328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		329	croak ("Coro::State object required");
		330	}
		331
		332	mg = CORO_MAGIC (coro);
		333	return (struct coro *)mg->mg_ptr;
		334	}
		335
		336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		337
260	/* the next two functions merely cache the padlists */	338	/* the next two functions merely cache the padlists */
261	static void	339	static void
262	get_padlist (CV *cv)	340	get_padlist (pTHX_ CV *cv)
263	{	341	{
264	MAGIC *mg = CORO_MAGIC (cv);	342	MAGIC *mg = CORO_MAGIC (cv);
265	AV *av;	343	AV *av;
266		344
267	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
268	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
269	else	347	else
270	{	348	{
271	#if PREFER_PERL_FUNCTIONS	349	#if CORO_PREFER_PERL_FUNCTIONS
272	/* this is probably cleaner, but also slower? */	350	/* this is probably cleaner, but also slower? */
273	CV *cp = Perl_cv_clone (cv);	351	CV *cp = Perl_cv_clone (cv);
274	CvPADLIST (cv) = CvPADLIST (cp);	352	CvPADLIST (cv) = CvPADLIST (cp);
275	CvPADLIST (cp) = 0;	353	CvPADLIST (cp) = 0;
276	SvREFCNT_dec (cp);	354	SvREFCNT_dec (cp);
277	#else	355	#else
278	CvPADLIST (cv) = coro_clone_padlist (cv);	356	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
279	#endif	357	#endif
280	}	358	}
281	}	359	}
282		360
283	static void	361	static void
284	put_padlist (CV *cv)	362	put_padlist (pTHX_ CV *cv)
285	{	363	{
286	MAGIC *mg = CORO_MAGIC (cv);	364	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	365	AV *av;
288		366
289	if (!mg)	367	if (!mg)
…		…
300	av_extend (av, AvMAX (av) + 1);	378	av_extend (av, AvMAX (av) + 1);
301		379
302	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
303	}	381	}
304		382
305	#define SB do {	383	/** load & save, init *******************************************************/
306	#define SE } while (0)
307		384
308	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
309
310	static void	385	static void
311	load_perl (Coro__State c)	386	load_perl (pTHX_ Coro__State c)
312	{	387	{
313	#define VAR(name,type) PL_ ## name = c->name;	388	#define VAR(name,type) PL_ ## name = c->name;
314	# include "state.h"	389	# include "state.h"
315	#undef VAR	390	#undef VAR
316		391
317	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	392	GvSV (PL_defgv) = c->defsv;
318	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	393	GvAV (PL_defgv) = c->defav;
319	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	394	GvSV (PL_errgv) = c->errsv;
320	if (c->irssv)	395	GvSV (irsgv) = c->irssv_sv;
321	{
322	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
323	SvREFCNT_dec (c->irssv);
324	else
325	{
326	REPLACE_SV (PL_rs, c->irssv);
327	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
328	sv_setsv (c->irssv_sv, PL_rs);
329	}
330	}
331		396
332	{	397	{
333	dSP;	398	dSP;
334	CV *cv;	399	CV *cv;
335		400
336	/* now do the ugly restore mess */	401	/* now do the ugly restore mess */
337	while ((cv = (CV *)POPs))	402	while ((cv = (CV *)POPs))
338	{	403	{
339	put_padlist (cv); /* mark this padlist as available */	404	put_padlist (aTHX_ cv); /* mark this padlist as available */
340	CvDEPTH (cv) = PTR2IV (POPs);	405	CvDEPTH (cv) = PTR2IV (POPs);
341	CvPADLIST (cv) = (AV *)POPs;	406	CvPADLIST (cv) = (AV *)POPs;
342	}	407	}
343		408
344	PUTBACK;	409	PUTBACK;
345	}	410	}
346	}	411	}
347		412
348	static void	413	static void
349	save_perl (Coro__State c)	414	save_perl (pTHX_ Coro__State c)
350	{	415	{
351	{	416	{
352	dSP;	417	dSP;
353	I32 cxix = cxstack_ix;	418	I32 cxix = cxstack_ix;
354	PERL_CONTEXT *ccstk = cxstack;	419	PERL_CONTEXT *ccstk = cxstack;
…		…
357	/*	422	/*
358	* the worst thing you can imagine happens first - we have to save	423	* the worst thing you can imagine happens first - we have to save
359	* (and reinitialize) all cv's in the whole callchain :(	424	* (and reinitialize) all cv's in the whole callchain :(
360	*/	425	*/
361		426
362	EXTEND (SP, 3 + 1);
363	PUSHs (Nullsv);	427	XPUSHs (Nullsv);
364	/* this loop was inspired by pp_caller */	428	/* this loop was inspired by pp_caller */
365	for (;;)	429	for (;;)
366	{	430	{
367	while (cxix >= 0)	431	while (cxix >= 0)
368	{	432	{
369	PERL_CONTEXT *cx = &ccstk[cxix--];	433	PERL_CONTEXT *cx = &ccstk[cxix--];
370		434
371	if (CxTYPE (cx) == CXt_SUB)	435	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
372	{	436	{
373	CV *cv = cx->blk_sub.cv;	437	CV *cv = cx->blk_sub.cv;
374		438
375	if (CvDEPTH (cv))	439	if (CvDEPTH (cv))
376	{	440	{
…		…
378	PUSHs ((SV *)CvPADLIST (cv));	442	PUSHs ((SV *)CvPADLIST (cv));
379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	443	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
380	PUSHs ((SV *)cv);	444	PUSHs ((SV *)cv);
381		445
382	CvDEPTH (cv) = 0;	446	CvDEPTH (cv) = 0;
383	get_padlist (cv);	447	get_padlist (aTHX_ cv);
384	}	448	}
385	}	449	}
386	}	450	}
387		451
388	if (top_si->si_type == PERLSI_MAIN)	452	if (top_si->si_type == PERLSI_MAIN)
389	break;	453	break;
390		454
391	top_si = top_si->si_prev;	455	top_si = top_si->si_prev;
392	ccstk = top_si->si_cxstack;	456	ccstk = top_si->si_cxstack;
393	cxix = top_si->si_cxix;	457	cxix = top_si->si_cxix;
394	}	458	}
395		459
396	PUTBACK;	460	PUTBACK;
397	}	461	}
398		462
399	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	463	c->defav = GvAV (PL_defgv);
400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	464	c->defsv = DEFSV;
401	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	465	c->errsv = ERRSV;
402	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	466	c->irssv_sv = GvSV (irsgv);
403		467
404	#define VAR(name,type)c->name = PL_ ## name;	468	#define VAR(name,type)c->name = PL_ ## name;
405	# include "state.h"	469	# include "state.h"
406	#undef VAR	470	#undef VAR
407	}	471	}
…		…
410	* allocate various perl stacks. This is an exact copy	474	* allocate various perl stacks. This is an exact copy
411	* of perl.c:init_stacks, except that it uses less memory	475	* of perl.c:init_stacks, except that it uses less memory
412	* on the (sometimes correct) assumption that coroutines do	476	* on the (sometimes correct) assumption that coroutines do
413	* not usually need a lot of stackspace.	477	* not usually need a lot of stackspace.
414	*/	478	*/
415	#if PREFER_PERL_FUNCTIONS	479	#if CORO_PREFER_PERL_FUNCTIONS
416	# define coro_init_stacks init_stacks	480	# define coro_init_stacks init_stacks
417	#else	481	#else
418	static void	482	static void
419	coro_init_stacks ()	483	coro_init_stacks (pTHX)
420	{	484	{
421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	485	PL_curstackinfo = new_stackinfo(64, 6);
422	PL_curstackinfo->si_type = PERLSI_MAIN;	486	PL_curstackinfo->si_type = PERLSI_MAIN;
423	PL_curstack = PL_curstackinfo->si_stack;	487	PL_curstack = PL_curstackinfo->si_stack;
424	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	488	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
425		489
426	PL_stack_base = AvARRAY(PL_curstack);	490	PL_stack_base = AvARRAY(PL_curstack);
427	PL_stack_sp = PL_stack_base;	491	PL_stack_sp = PL_stack_base;
428	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	492	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
429		493
430	New(50,PL_tmps_stack,128,SV*);	494	New(50,PL_tmps_stack,64,SV*);
431	PL_tmps_floor = -1;	495	PL_tmps_floor = -1;
432	PL_tmps_ix = -1;	496	PL_tmps_ix = -1;
433	PL_tmps_max = 128;	497	PL_tmps_max = 64;
434		498
435	New(54,PL_markstack,32,I32);	499	New(54,PL_markstack,16,I32);
436	PL_markstack_ptr = PL_markstack;	500	PL_markstack_ptr = PL_markstack;
437	PL_markstack_max = PL_markstack + 32;	501	PL_markstack_max = PL_markstack + 16;
438		502
439	#ifdef SET_MARK_OFFSET	503	#ifdef SET_MARK_OFFSET
440	SET_MARK_OFFSET;	504	SET_MARK_OFFSET;
441	#endif	505	#endif
442		506
443	New(54,PL_scopestack,32,I32);	507	New(54,PL_scopestack,16,I32);
444	PL_scopestack_ix = 0;	508	PL_scopestack_ix = 0;
445	PL_scopestack_max = 32;	509	PL_scopestack_max = 16;
446		510
447	New(54,PL_savestack,64,ANY);	511	New(54,PL_savestack,64,ANY);
448	PL_savestack_ix = 0;	512	PL_savestack_ix = 0;
449	PL_savestack_max = 64;	513	PL_savestack_max = 64;
450		514
451	#if !PERL_VERSION_ATLEAST (5,9,0)	515	#if !PERL_VERSION_ATLEAST (5,9,0)
452	New(54,PL_retstack,16,OP*);	516	New(54,PL_retstack,4,OP*);
453	PL_retstack_ix = 0;	517	PL_retstack_ix = 0;
454	PL_retstack_max = 16;	518	PL_retstack_max = 4;
455	#endif	519	#endif
456	}	520	}
457	#endif	521	#endif
458		522
459	/*	523	/*
460	* destroy the stacks, the callchain etc...	524	* destroy the stacks, the callchain etc...
461	*/	525	*/
462	static void	526	static void
463	coro_destroy_stacks ()	527	coro_destroy_stacks (pTHX)
464	{	528	{
465	if (!IN_DESTRUCT)
466	{
467	/* restore all saved variables and stuff */
468	LEAVE_SCOPE (0);
469	assert (PL_tmps_floor == -1);
470
471	/* free all temporaries */
472	FREETMPS;
473	assert (PL_tmps_ix == -1);
474
475	POPSTACK_TO (PL_mainstack);
476	}
477
478	while (PL_curstackinfo->si_next)	529	while (PL_curstackinfo->si_next)
479	PL_curstackinfo = PL_curstackinfo->si_next;	530	PL_curstackinfo = PL_curstackinfo->si_next;
480		531
481	while (PL_curstackinfo)	532	while (PL_curstackinfo)
482	{	533	{
…		…
497	#if !PERL_VERSION_ATLEAST (5,9,0)	548	#if !PERL_VERSION_ATLEAST (5,9,0)
498	Safefree (PL_retstack);	549	Safefree (PL_retstack);
499	#endif	550	#endif
500	}	551	}
501		552
502	static void	553	static size_t
503	setup_coro (struct coro *coro)	554	coro_rss (pTHX_ struct coro *coro)
		555	{
		556	size_t rss = sizeof (*coro);
		557
		558	if (coro->mainstack)
		559	{
		560	if (coro->flags & CF_RUNNING)
		561	{
		562	#define VAR(name,type)coro->name = PL_ ## name;
		563	# include "state.h"
		564	#undef VAR
		565	}
		566
		567	rss += sizeof (coro->curstackinfo);
		568	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		569	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		570	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		571	rss += coro->tmps_max * sizeof (SV *);
		572	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		573	rss += coro->scopestack_max * sizeof (I32);
		574	rss += coro->savestack_max * sizeof (ANY);
		575
		576	#if !PERL_VERSION_ATLEAST (5,9,0)
		577	rss += coro->retstack_max * sizeof (OP *);
		578	#endif
		579	}
		580
		581	return rss;
		582	}
		583
		584	/** coroutine stack handling ************************************************/
		585
		586	static void
		587	coro_setup (pTHX_ struct coro *coro)
504	{	588	{
505	/*	589	/*
506	* emulate part of the perl startup here.	590	* emulate part of the perl startup here.
507	*/	591	*/
508
509	coro_init_stacks ();	592	coro_init_stacks (aTHX);
510		593
		594	PL_runops = RUNOPS_DEFAULT;
511	PL_curcop = &PL_compiling;	595	PL_curcop = &PL_compiling;
512	PL_in_eval = EVAL_NULL;	596	PL_in_eval = EVAL_NULL;
		597	PL_comppad = 0;
513	PL_curpm = 0;	598	PL_curpm = 0;
514	PL_localizing = 0;	599	PL_localizing = 0;
515	PL_dirty = 0;	600	PL_dirty = 0;
516	PL_restartop = 0;	601	PL_restartop = 0;
		602
		603	GvSV (PL_defgv) = NEWSV (0, 0);
		604	GvAV (PL_defgv) = coro->args; coro->args = 0;
		605	GvSV (PL_errgv) = NEWSV (0, 0);
		606	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		607	PL_rs = newSVsv (GvSV (irsgv));
		608
		609	{
		610	IO *io = newIO ();
		611	PL_defoutgv = newGVgen ("Coro");
		612	GvIOp(PL_defoutgv) = io;
		613	IoTYPE (io) = IoTYPE_WRONLY;
		614	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		615	IoFLAGS (io) |= IOf_FLUSH;
		616	}
517		617
518	{	618	{
519	dSP;	619	dSP;
520	LOGOP myop;	620	LOGOP myop;
521		621
522	SvREFCNT_dec (GvAV (PL_defgv));
523	GvAV (PL_defgv) = coro->args; coro->args = 0;
524
525	Zero (&myop, 1, LOGOP);	622	Zero (&myop, 1, LOGOP);
526	myop.op_next = Nullop;	623	myop.op_next = Nullop;
527	myop.op_flags = OPf_WANT_VOID;	624	myop.op_flags = OPf_WANT_VOID;
528		625
529	PUSHMARK (SP);	626	PUSHMARK (SP);
530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	627	XPUSHs (av_shift (GvAV (PL_defgv)));
531	PUTBACK;	628	PUTBACK;
532	PL_op = (OP *)&myop;	629	PL_op = (OP *)&myop;
533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	630	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
534	SPAGAIN;	631	SPAGAIN;
535	}	632	}
536		633
537	ENTER; /* necessary e.g. for dounwind */	634	ENTER; /* necessary e.g. for dounwind */
538	}	635	}
539		636
540	static void	637	static void
		638	coro_destroy (pTHX_ struct coro *coro)
		639	{
		640	if (!IN_DESTRUCT)
		641	{
		642	/* restore all saved variables and stuff */
		643	LEAVE_SCOPE (0);
		644	assert (PL_tmps_floor == -1);
		645
		646	/* free all temporaries */
		647	FREETMPS;
		648	assert (PL_tmps_ix == -1);
		649
		650	/* unwind all extra stacks */
		651	POPSTACK_TO (PL_mainstack);
		652
		653	/* unwind main stack */
		654	dounwind (-1);
		655	}
		656
		657	SvREFCNT_dec (GvSV (PL_defgv));
		658	SvREFCNT_dec (GvAV (PL_defgv));
		659	SvREFCNT_dec (GvSV (PL_errgv));
		660	SvREFCNT_dec (PL_defoutgv);
		661	SvREFCNT_dec (PL_rs);
		662	SvREFCNT_dec (GvSV (irsgv));
		663
		664	SvREFCNT_dec (coro->saved_deffh);
		665	//SvREFCNT_dec (coro->throw);
		666
		667	coro_destroy_stacks (aTHX);
		668	}
		669
		670	static void
541	free_coro_mortal ()	671	free_coro_mortal (pTHX)
542	{	672	{
543	if (coro_mortal)	673	if (coro_mortal)
544	{	674	{
545	SvREFCNT_dec (coro_mortal);	675	SvREFCNT_dec (coro_mortal);
546	coro_mortal = 0;	676	coro_mortal = 0;
547	}	677	}
548	}	678	}
549		679
		680	static int
		681	runops_trace (pTHX)
		682	{
		683	COP *oldcop = 0;
		684	int oldcxix = -2;
		685	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		686	coro_cctx *cctx = coro->cctx;
		687
		688	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		689	{
		690	PERL_ASYNC_CHECK ();
		691
		692	if (cctx->flags & CC_TRACE_ALL)
		693	{
		694	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		695	{
		696	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		697	SV **bot, **top;
		698	AV *av = newAV (); /* return values */
		699	SV **cb;
		700	dSP;
		701
		702	GV *gv = CvGV (cx->blk_sub.cv);
		703	SV *fullname = sv_2mortal (newSV (0));
		704	if (isGV (gv))
		705	gv_efullname3 (fullname, gv, 0);
		706
		707	bot = PL_stack_base + cx->blk_oldsp + 1;
		708	top = cx->blk_gimme == G_ARRAY ? SP + 1
		709	: cx->blk_gimme == G_SCALAR ? bot + 1
		710	: bot;
		711
		712	while (bot < top)
		713	av_push (av, SvREFCNT_inc (*bot++));
		714
		715	PL_runops = RUNOPS_DEFAULT;
		716	ENTER;
		717	SAVETMPS;
		718	EXTEND (SP, 3);
		719	PUSHMARK (SP);
		720	PUSHs (&PL_sv_no);
		721	PUSHs (fullname);
		722	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		723	PUTBACK;
		724	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		725	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		726	SPAGAIN;
		727	FREETMPS;
		728	LEAVE;
		729	PL_runops = runops_trace;
		730	}
		731
		732	if (oldcop != PL_curcop)
		733	{
		734	oldcop = PL_curcop;
		735
		736	if (PL_curcop != &PL_compiling)
		737	{
		738	SV **cb;
		739
		740	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		741	{
		742	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		743
		744	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		745	{
		746	runops_proc_t old_runops = PL_runops;
		747	dSP;
		748	GV *gv = CvGV (cx->blk_sub.cv);
		749	SV *fullname = sv_2mortal (newSV (0));
		750
		751	if (isGV (gv))
		752	gv_efullname3 (fullname, gv, 0);
		753
		754	PL_runops = RUNOPS_DEFAULT;
		755	ENTER;
		756	SAVETMPS;
		757	EXTEND (SP, 3);
		758	PUSHMARK (SP);
		759	PUSHs (&PL_sv_yes);
		760	PUSHs (fullname);
		761	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		762	PUTBACK;
		763	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		764	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		765	SPAGAIN;
		766	FREETMPS;
		767	LEAVE;
		768	PL_runops = runops_trace;
		769	}
		770
		771	oldcxix = cxstack_ix;
		772	}
		773
		774	if (cctx->flags & CC_TRACE_LINE)
		775	{
		776	dSP;
		777
		778	PL_runops = RUNOPS_DEFAULT;
		779	ENTER;
		780	SAVETMPS;
		781	EXTEND (SP, 3);
		782	PL_runops = RUNOPS_DEFAULT;
		783	PUSHMARK (SP);
		784	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		785	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		786	PUTBACK;
		787	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		788	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		789	SPAGAIN;
		790	FREETMPS;
		791	LEAVE;
		792	PL_runops = runops_trace;
		793	}
		794	}
		795	}
		796	}
		797	}
		798
		799	TAINT_NOT;
		800	return 0;
		801	}
		802
550	/* inject a fake call to Coro::State::_cctx_init into the execution */	803	/* inject a fake call to Coro::State::_cctx_init into the execution */
		804	/* _cctx_init should be careful, as it could be called at almost any time */
		805	/* during execution of a perl program */
551	static void NOINLINE	806	static void NOINLINE
552	prepare_cctx (coro_cctx *cctx)	807	prepare_cctx (pTHX_ coro_cctx *cctx)
553	{	808	{
554	dSP;	809	dSP;
555	LOGOP myop;	810	LOGOP myop;
		811
		812	PL_top_env = &PL_start_env;
		813
		814	if (cctx->flags & CC_TRACE)
		815	PL_runops = runops_trace;
556		816
557	Zero (&myop, 1, LOGOP);	817	Zero (&myop, 1, LOGOP);
558	myop.op_next = PL_op;	818	myop.op_next = PL_op;
559	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	819	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
560		820
…		…
566	PL_op = (OP *)&myop;	826	PL_op = (OP *)&myop;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	827	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	828	SPAGAIN;
569	}	829	}
570		830
		831	/*
		832	* this is a _very_ stripped down perl interpreter ;)
		833	*/
571	static void	834	static void
572	coro_run (void *arg)	835	coro_run (void *arg)
573	{	836	{
		837	dTHX;
		838
574	/* coro_run is the alternative tail of transfer(), so unlock here. */	839	/* coro_run is the alternative tail of transfer(), so unlock here. */
575	UNLOCK;	840	UNLOCK;
576		841
577	/*	842	/* we now skip the entersub that lead to transfer() */
578	* this is a _very_ stripped down perl interpreter ;)	843	PL_op = PL_op->op_next;
579	*/
580	PL_top_env = &PL_start_env;
581		844
582	/* inject call to cctx_init */	845	/* inject a fake subroutine call to cctx_init */
583	prepare_cctx ((coro_cctx *)arg);	846	prepare_cctx (aTHX_ (coro_cctx *)arg);
584		847
585	/* somebody will hit me for both perl_run and PL_restartop */	848	/* somebody or something will hit me for both perl_run and PL_restartop */
586	PL_restartop = PL_op;	849	PL_restartop = PL_op;
587	perl_run (PL_curinterp);	850	perl_run (PL_curinterp);
588		851
589	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	852	/*
590	abort ();	853	* If perl-run returns we assume exit() was being called or the coro
		854	* fell off the end, which seems to be the only valid (non-bug)
		855	* reason for perl_run to return. We try to exit by jumping to the
		856	* bootstrap-time "top" top_env, as we cannot restore the "main"
		857	* coroutine as Coro has no such concept
		858	*/
		859	PL_top_env = main_top_env;
		860	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
591	}	861	}
592		862
593	static coro_cctx *	863	static coro_cctx *
594	cctx_new ()	864	cctx_new ()
595	{	865	{
596	coro_cctx *cctx;	866	coro_cctx *cctx;
		867	void *stack_start;
		868	size_t stack_size;
597		869
598	++cctx_count;	870	++cctx_count;
599		871
600	Newz (0, cctx, 1, coro_cctx);	872	Newz (0, cctx, 1, coro_cctx);
601		873
602	#if HAVE_MMAP	874	#if HAVE_MMAP
603		875
604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	876	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
605	/* mmap supposedly does allocate-on-write for us */	877	/* mmap supposedly does allocate-on-write for us */
606	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	878	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
607		879
608	if (cctx->sptr == (void *)-1)	880	if (cctx->sptr != (void *)-1)
609	{
610	perror ("FATAL: unable to mmap stack for coroutine");
611	_exit (EXIT_FAILURE);
612	}	881	{
613
614	# if STACKGUARD	882	# if CORO_STACKGUARD
615	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	883	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
616	# endif	884	# endif
		885	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		886	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		887	cctx->flags |= CC_MAPPED;
		888	}
		889	else
		890	#endif
		891	{
		892	cctx->ssize = coro_stacksize * (long)sizeof (long);
		893	New (0, cctx->sptr, coro_stacksize, long);
617		894
618	#else
619
620	cctx->ssize = STACKSIZE * (long)sizeof (long);
621	New (0, cctx->sptr, STACKSIZE, long);
622
623	if (!cctx->sptr)	895	if (!cctx->sptr)
624	{	896	{
625	perror ("FATAL: unable to malloc stack for coroutine");	897	perror ("FATAL: unable to allocate stack for coroutine");
626	_exit (EXIT_FAILURE);	898	_exit (EXIT_FAILURE);
627	}	899	}
628		900
629	#endif	901	stack_start = cctx->sptr;
		902	stack_size = cctx->ssize;
		903	}
630		904
631	#if USE_VALGRIND	905	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
632	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
633	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
634	cctx->ssize + (char *)cctx->sptr
635	);
636	#endif
637
638	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	906	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
639		907
640	return cctx;	908	return cctx;
641	}	909	}
642		910
643	static void	911	static void
…		…
646	if (!cctx)	914	if (!cctx)
647	return;	915	return;
648		916
649	--cctx_count;	917	--cctx_count;
650		918
651	#if USE_VALGRIND	919	#if CORO_USE_VALGRIND
652	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	920	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
653	#endif	921	#endif
654		922
655	#if HAVE_MMAP	923	#if HAVE_MMAP
		924	if (cctx->flags & CC_MAPPED)
656	munmap (cctx->sptr, cctx->ssize);	925	munmap (cctx->sptr, cctx->ssize);
657	#else	926	else
		927	#endif
658	Safefree (cctx->sptr);	928	Safefree (cctx->sptr);
659	#endif
660		929
661	Safefree (cctx);	930	Safefree (cctx);
662	}	931	}
663		932
664	static coro_cctx *	933	static coro_cctx *
665	cctx_get ()	934	cctx_get (pTHX)
666	{	935	{
667	coro_cctx *cctx;
668
669	if (cctx_first)	936	while (cctx_first)
670	{	937	{
671	cctx = cctx_first;	938	coro_cctx *cctx = cctx_first;
672	cctx_first = cctx->next;	939	cctx_first = cctx->next;
673	--cctx_idle;	940	--cctx_idle;
674	}	941
675	else	942	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
676	{	943	return cctx;
677	cctx = cctx_new ();	944
678	PL_op = PL_op->op_next;	945	cctx_destroy (cctx);
679	}	946	}
680		947
681	return cctx;	948	return cctx_new ();
682	}	949	}
683		950
684	static void	951	static void
685	cctx_put (coro_cctx *cctx)	952	cctx_put (coro_cctx *cctx)
686	{	953	{
…		…
689	{	956	{
690	coro_cctx *first = cctx_first;	957	coro_cctx *first = cctx_first;
691	cctx_first = first->next;	958	cctx_first = first->next;
692	--cctx_idle;	959	--cctx_idle;
693		960
694	assert (!first->inuse);
695	cctx_destroy (first);	961	cctx_destroy (first);
696	}	962	}
697		963
698	++cctx_idle;	964	++cctx_idle;
699	cctx->next = cctx_first;	965	cctx->next = cctx_first;
700	cctx_first = cctx;	966	cctx_first = cctx;
701	}	967	}
702		968
703	/* never call directly, always through the coro_state_transfer global variable */	969	/** coroutine switching *****************************************************/
		970
704	static void NOINLINE	971	static void NOINLINE
		972	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		973	{
		974	if (prev != next)
		975	{
		976	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		977	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		978
		979	if (next->flags & CF_RUNNING)
		980	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		981
		982	if (next->flags & CF_DESTROYED)
		983	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		984
		985	if (PL_lex_state != LEX_NOTPARSING)
		986	croak ("Coro::State::transfer called while parsing, but this is not supported");
		987	}
		988	}
		989
		990	/* always use the TRANSFER macro */
		991	static void NOINLINE
705	transfer (struct coro *prev, struct coro *next)	992	transfer (pTHX_ struct coro *prev, struct coro *next)
706	{	993	{
707	dSTACKLEVEL;	994	dSTACKLEVEL;
708		995
709	/* sometimes transfer is only called to set idle_sp */	996	/* sometimes transfer is only called to set idle_sp */
710	if (!next)	997	if (!next)
711	{	998	{
712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	999	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
713	assert (((coro_cctx *)prev)->top_env = PL_top_env); /* just for the side effetc when assert is enabled */	1000	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
714	}	1001	}
715	else if (prev != next)	1002	else if (prev != next)
716	{	1003	{
717	coro_cctx *prev__cctx;	1004	coro_cctx *prev__cctx;
718		1005
719	if (prev->flags & CF_NEW)	1006	if (prev->flags & CF_NEW)
720	{	1007	{
721	/* create a new empty context */	1008	/* create a new empty context */
722	Newz (0, prev->cctx, 1, coro_cctx);	1009	Newz (0, prev->cctx, 1, coro_cctx);
723	prev->cctx->inuse = 1;
724	prev->flags &= ~CF_NEW;	1010	prev->flags &= ~CF_NEW;
725	prev->flags |= CF_RUNNING;	1011	prev->flags |= CF_RUNNING;
726	}	1012	}
727
728	/*TODO: must not croak here */
729	if (!prev->flags & CF_RUNNING)
730	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
731
732	if (next->flags & CF_RUNNING)
733	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
734		1013
735	prev->flags &= ~CF_RUNNING;	1014	prev->flags &= ~CF_RUNNING;
736	next->flags |= CF_RUNNING;	1015	next->flags |= CF_RUNNING;
737		1016
738	LOCK;	1017	LOCK;
…		…
740	if (next->flags & CF_NEW)	1019	if (next->flags & CF_NEW)
741	{	1020	{
742	/* need to start coroutine */	1021	/* need to start coroutine */
743	next->flags &= ~CF_NEW;	1022	next->flags &= ~CF_NEW;
744	/* first get rid of the old state */	1023	/* first get rid of the old state */
745	save_perl (prev);	1024	save_perl (aTHX_ prev);
746	/* setup coroutine call */	1025	/* setup coroutine call */
747	setup_coro (next);	1026	coro_setup (aTHX_ next);
748	/* need a new stack */
749	assert (!next->cctx);
750	}	1027	}
751	else	1028	else
752	{	1029	{
753	/* coroutine already started */	1030	/* coroutine already started */
754	save_perl (prev);	1031	save_perl (aTHX_ prev);
755	load_perl (next);	1032	load_perl (aTHX_ next);
756	}	1033	}
757		1034
758	prev__cctx = prev->cctx;	1035	prev__cctx = prev->cctx;
759		1036
760	/* possibly "free" the cctx */	1037	/* possibly "free" the cctx */
761	if (prev__cctx->idle_sp == STACKLEVEL)	1038	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
762	{	1039	{
763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1040	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764	assert (PL_top_env == prev__cctx->top_env);	1041	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765		1042
766	prev->cctx = 0;	1043	prev->cctx = 0;
767		1044
768	cctx_put (prev__cctx);	1045	cctx_put (prev__cctx);
769	prev__cctx->inuse = 0;
770	}	1046	}
771		1047
		1048	++next->usecount;
		1049
772	if (!next->cctx)	1050	if (!next->cctx)
773	{
774	next->cctx = cctx_get ();	1051	next->cctx = cctx_get (aTHX);
775	assert (!next->cctx->inuse);
776	next->cctx->inuse = 1;
777	}
778		1052
779	if (prev__cctx != next->cctx)	1053	if (prev__cctx != next->cctx)
780	{	1054	{
781	prev__cctx->top_env = PL_top_env;	1055	prev__cctx->top_env = PL_top_env;
782	PL_top_env = next->cctx->top_env;	1056	PL_top_env = next->cctx->top_env;
783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1057	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
784	}	1058	}
785		1059
786	free_coro_mortal ();	1060	free_coro_mortal (aTHX);
787
788	UNLOCK;	1061	UNLOCK;
789	}	1062	}
790	}	1063	}
791		1064
792	struct transfer_args	1065	struct transfer_args
793	{	1066	{
794	struct coro *prev, *next;	1067	struct coro *prev, *next;
795	};	1068	};
796		1069
797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1070	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1071	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
798		1072
		1073	/** high level stuff ********************************************************/
		1074
799	static void	1075	static int
800	coro_state_destroy (struct coro *coro)	1076	coro_state_destroy (pTHX_ struct coro *coro)
801	{	1077	{
802	if (coro->refcnt--)	1078	if (coro->flags & CF_DESTROYED)
803	return;	1079	return 0;
		1080
		1081	coro->flags |= CF_DESTROYED;
		1082
		1083	if (coro->flags & CF_READY)
		1084	{
		1085	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1086	/* alternative: look through all ready queues and remove the coro */
		1087	LOCK;
		1088	--coro_nready;
		1089	UNLOCK;
		1090	}
		1091	else
		1092	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
804		1093
805	if (coro->mainstack && coro->mainstack != main_mainstack)	1094	if (coro->mainstack && coro->mainstack != main_mainstack)
806	{	1095	{
807	struct coro temp;	1096	struct coro temp;
808	Zero (&temp, 1, struct coro);
809	temp.save = CORO_SAVE_ALL;
810		1097
811	if (coro->flags & CF_RUNNING)	1098	if (coro->flags & CF_RUNNING)
812	croak ("FATAL: tried to destroy currently running coroutine");	1099	croak ("FATAL: tried to destroy currently running coroutine");
813		1100
814	save_perl (&temp);	1101	save_perl (aTHX_ &temp);
815	load_perl (coro);	1102	load_perl (aTHX_ coro);
816		1103
817	coro_destroy_stacks ();	1104	coro_destroy (aTHX_ coro);
818		1105
819	load_perl (&temp); /* this will get rid of defsv etc.. */	1106	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
820		1107
821	coro->mainstack = 0;	1108	coro->mainstack = 0;
822	}	1109	}
823		1110
824	cctx_destroy (coro->cctx);	1111	cctx_destroy (coro->cctx);
825	SvREFCNT_dec (coro->args);	1112	SvREFCNT_dec (coro->args);
826	Safefree (coro);	1113
		1114	if (coro->next) coro->next->prev = coro->prev;
		1115	if (coro->prev) coro->prev->next = coro->next;
		1116	if (coro == coro_first) coro_first = coro->next;
		1117
		1118	return 1;
827	}	1119	}
828		1120
829	static int	1121	static int
830	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1122	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
831	{	1123	{
832	struct coro *coro = (struct coro *)mg->mg_ptr;	1124	struct coro *coro = (struct coro *)mg->mg_ptr;
833	mg->mg_ptr = 0;	1125	mg->mg_ptr = 0;
834		1126
		1127	coro->hv = 0;
		1128
		1129	if (--coro->refcnt < 0)
		1130	{
835	coro_state_destroy (coro);	1131	coro_state_destroy (aTHX_ coro);
		1132	Safefree (coro);
		1133	}
836		1134
837	return 0;	1135	return 0;
838	}	1136	}
839		1137
840	static int	1138	static int
…		…
847	return 0;	1145	return 0;
848	}	1146	}
849		1147
850	static MGVTBL coro_state_vtbl = {	1148	static MGVTBL coro_state_vtbl = {
851	0, 0, 0, 0,	1149	0, 0, 0, 0,
852	coro_state_clear,	1150	coro_state_free,
853	0,	1151	0,
854	#ifdef MGf_DUP	1152	#ifdef MGf_DUP
855	coro_state_dup,	1153	coro_state_dup,
856	#else	1154	#else
857	# define MGf_DUP 0	1155	# define MGf_DUP 0
858	#endif	1156	#endif
859	};	1157	};
860		1158
861	static struct coro *
862	SvSTATE (SV *coro)
863	{
864	HV *stash;
865	MAGIC *mg;
866
867	if (SvROK (coro))
868	coro = SvRV (coro);
869
870	stash = SvSTASH (coro);
871	if (stash != coro_stash && stash != coro_state_stash)
872	{
873	/* very slow, but rare, check */
874	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
875	croak ("Coro::State object required");
876	}
877
878	mg = SvMAGIC (coro);
879	assert (mg->mg_type == PERL_MAGIC_ext);
880	return (struct coro *)mg->mg_ptr;
881	}
882
883	static void	1159	static void
884	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1160	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
885	{	1161	{
886	ta->prev = SvSTATE (prev_sv);	1162	ta->prev = SvSTATE (prev_sv);
887	ta->next = SvSTATE (next_sv);	1163	ta->next = SvSTATE (next_sv);
		1164	TRANSFER_CHECK (*ta);
888	}	1165	}
889		1166
890	static void	1167	static void
891	api_transfer (SV *prev_sv, SV *next_sv)	1168	api_transfer (SV *prev_sv, SV *next_sv)
892	{	1169	{
		1170	dTHX;
893	struct transfer_args ta;	1171	struct transfer_args ta;
894		1172
895	prepare_transfer (&ta, prev_sv, next_sv);	1173	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
896	TRANSFER (ta);	1174	TRANSFER (ta);
897	}	1175	}
898		1176
899	static int
900	api_save (SV *coro_sv, int new_save)
901	{
902	struct coro *coro = SvSTATE (coro_sv);
903	int old_save = coro->save;
904
905	if (new_save >= 0)
906	coro->save = new_save;
907
908	return old_save;
909	}
910
911	/** Coro ********************************************************************/	1177	/** Coro ********************************************************************/
912		1178
913	#define PRIO_MAX 3
914	#define PRIO_HIGH 1
915	#define PRIO_NORMAL 0
916	#define PRIO_LOW -1
917	#define PRIO_IDLE -3
918	#define PRIO_MIN -4
919
920	/* for Coro.pm */
921	static SV *coro_current;
922	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
923	static int coro_nready;
924
925	static void	1179	static void
926	coro_enq (SV *coro_sv)	1180	coro_enq (pTHX_ SV *coro_sv)
927	{	1181	{
928	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1182	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
929	coro_nready++;
930	}	1183	}
931		1184
932	static SV *	1185	static SV *
933	coro_deq (int min_prio)	1186	coro_deq (pTHX_ int min_prio)
934	{	1187	{
935	int prio = PRIO_MAX - PRIO_MIN;	1188	int prio = PRIO_MAX - PRIO_MIN;
936		1189
937	min_prio -= PRIO_MIN;	1190	min_prio -= PRIO_MIN;
938	if (min_prio < 0)	1191	if (min_prio < 0)
939	min_prio = 0;	1192	min_prio = 0;
940		1193
941	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1194	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
942	if (AvFILLp (coro_ready [prio]) >= 0)	1195	if (AvFILLp (coro_ready [prio]) >= 0)
943	{
944	coro_nready--;
945	return av_shift (coro_ready [prio]);	1196	return av_shift (coro_ready [prio]);
946	}
947		1197
948	return 0;	1198	return 0;
949	}	1199	}
950		1200
951	static int	1201	static int
952	api_ready (SV *coro_sv)	1202	api_ready (SV *coro_sv)
953	{	1203	{
		1204	dTHX;
954	struct coro *coro;	1205	struct coro *coro;
955		1206
956	if (SvROK (coro_sv))	1207	if (SvROK (coro_sv))
957	coro_sv = SvRV (coro_sv);	1208	coro_sv = SvRV (coro_sv);
958		1209
…		…
962	return 0;	1213	return 0;
963		1214
964	coro->flags |= CF_READY;	1215	coro->flags |= CF_READY;
965		1216
966	LOCK;	1217	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1218	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1219	++coro_nready;
968	UNLOCK;	1220	UNLOCK;
969		1221
970	return 1;	1222	return 1;
971	}	1223	}
972		1224
973	static int	1225	static int
974	api_is_ready (SV *coro_sv)	1226	api_is_ready (SV *coro_sv)
975	{	1227	{
		1228	dTHX;
976	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1229	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1230	}
978		1231
979	static void	1232	static void
980	prepare_schedule (struct transfer_args *ta)	1233	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1234	{
982	SV *prev, *next;	1235	SV *prev_sv, *next_sv;
983		1236
984	for (;;)	1237	for (;;)
985	{	1238	{
986	LOCK;	1239	LOCK;
987	next = coro_deq (PRIO_MIN);	1240	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1241
		1242	/* nothing to schedule: call the idle handler */
		1243	if (!next_sv)
		1244	{
		1245	dSP;
		1246	UNLOCK;
		1247
		1248	ENTER;
		1249	SAVETMPS;
		1250
		1251	PUSHMARK (SP);
		1252	PUTBACK;
		1253	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1254
		1255	FREETMPS;
		1256	LEAVE;
		1257	continue;
		1258	}
		1259
		1260	ta->next = SvSTATE (next_sv);
		1261
		1262	/* cannot transfer to destroyed coros, skip and look for next */
		1263	if (ta->next->flags & CF_DESTROYED)
		1264	{
		1265	UNLOCK;
		1266	SvREFCNT_dec (next_sv);
		1267	/* coro_nready is already taken care of by destroy */
		1268	continue;
		1269	}
		1270
		1271	--coro_nready;
988	UNLOCK;	1272	UNLOCK;
989
990	if (next)
991	break;	1273	break;
992
993	{
994	dSP;
995
996	ENTER;
997	SAVETMPS;
998
999	PUSHMARK (SP);
1000	PUTBACK;
1001	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1002
1003	FREETMPS;
1004	LEAVE;
1005	}	1274	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1275
1011	/* free this only after the transfer */	1276	/* free this only after the transfer */
1012	LOCK;	1277	prev_sv = SvRV (coro_current);
1013	free_coro_mortal ();
1014	UNLOCK;
1015	coro_mortal = prev;
1016
1017	assert (!SvROK(prev));//D
1018	assert (!SvROK(next));//D
1019
1020	ta->prev = SvSTATE (prev);	1278	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);	1279	TRANSFER_CHECK (*ta);
1022
1023	assert (ta->next->flags & CF_READY);	1280	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;	1281	ta->next->flags &= ~CF_READY;
1025	}	1282	SvRV_set (coro_current, next_sv);
1026		1283
		1284	LOCK;
		1285	free_coro_mortal (aTHX);
		1286	coro_mortal = prev_sv;
		1287	UNLOCK;
		1288	}
		1289
1027	static void	1290	static void
1028	prepare_cede (struct transfer_args *ta)	1291	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1292	{
1030	api_ready (coro_current);	1293	api_ready (coro_current);
1031	prepare_schedule (ta);	1294	prepare_schedule (aTHX_ ta);
1032	}	1295	}
1033		1296
1034	static int	1297	static int
1035	prepare_cede_notself (struct transfer_args *ta)	1298	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1036	{	1299	{
1037	if (coro_nready)	1300	if (coro_nready)
1038	{	1301	{
1039	SV *prev = SvRV (coro_current);	1302	SV *prev = SvRV (coro_current);
1040	prepare_schedule (ta);	1303	prepare_schedule (aTHX_ ta);
1041	api_ready (prev);	1304	api_ready (prev);
1042	return 1;	1305	return 1;
1043	}	1306	}
1044	else	1307	else
1045	return 0;	1308	return 0;
1046	}	1309	}
1047		1310
1048	static void	1311	static void
1049	api_schedule (void)	1312	api_schedule (void)
1050	{	1313	{
		1314	dTHX;
1051	struct transfer_args ta;	1315	struct transfer_args ta;
1052		1316
1053	prepare_schedule (&ta);	1317	prepare_schedule (aTHX_ &ta);
1054	TRANSFER (ta);	1318	TRANSFER (ta);
1055	}	1319	}
1056		1320
1057	static int	1321	static int
1058	api_cede (void)	1322	api_cede (void)
1059	{	1323	{
		1324	dTHX;
1060	struct transfer_args ta;	1325	struct transfer_args ta;
1061		1326
1062	prepare_cede (&ta);	1327	prepare_cede (aTHX_ &ta);
1063		1328
1064	if (ta.prev != ta.next)	1329	if (ta.prev != ta.next)
1065	{	1330	{
1066	TRANSFER (ta);	1331	TRANSFER (ta);
1067	return 1;	1332	return 1;
…		…
1071	}	1336	}
1072		1337
1073	static int	1338	static int
1074	api_cede_notself (void)	1339	api_cede_notself (void)
1075	{	1340	{
		1341	dTHX;
1076	struct transfer_args ta;	1342	struct transfer_args ta;
1077		1343
1078	if (prepare_cede_notself (&ta))	1344	if (prepare_cede_notself (aTHX_ &ta))
1079	{	1345	{
1080	TRANSFER (ta);	1346	TRANSFER (ta);
1081	return 1;	1347	return 1;
1082	}	1348	}
1083	else	1349	else
1084	return 0;	1350	return 0;
1085	}	1351	}
1086		1352
		1353	static void
		1354	api_trace (SV *coro_sv, int flags)
		1355	{
		1356	dTHX;
		1357	struct coro *coro = SvSTATE (coro_sv);
		1358
		1359	if (flags & CC_TRACE)
		1360	{
		1361	if (!coro->cctx)
		1362	coro->cctx = cctx_new ();
		1363	else if (!(coro->cctx->flags & CC_TRACE))
		1364	croak ("cannot enable tracing on coroutine with custom stack");
		1365
		1366	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1367	}
		1368	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1369	{
		1370	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1371
		1372	if (coro->flags & CF_RUNNING)
		1373	PL_runops = RUNOPS_DEFAULT;
		1374	else
		1375	coro->runops = RUNOPS_DEFAULT;
		1376	}
		1377	}
		1378
1087	MODULE = Coro::State PACKAGE = Coro::State	1379	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1088		1380
1089	PROTOTYPES: DISABLE	1381	PROTOTYPES: DISABLE
1090		1382
1091	BOOT:	1383	BOOT:
1092	{	1384	{
1093	#ifdef USE_ITHREADS	1385	#ifdef USE_ITHREADS
1094	MUTEX_INIT (&coro_mutex);	1386	MUTEX_INIT (&coro_mutex);
1095	#endif	1387	#endif
1096	BOOT_PAGESIZE;	1388	BOOT_PAGESIZE;
1097		1389
		1390	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1391
1098	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1392	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1099		1393
		1394	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1395	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1396	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1101	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1102	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1103	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1104	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1397	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1105		1398
1106	main_mainstack = PL_mainstack;	1399	main_mainstack = PL_mainstack;
		1400	main_top_env = PL_top_env;
		1401
		1402	while (main_top_env->je_prev)
		1403	main_top_env = main_top_env->je_prev;
1107		1404
1108	coroapi.ver = CORO_API_VERSION;	1405	coroapi.ver = CORO_API_VERSION;
1109	coroapi.transfer = api_transfer;	1406	coroapi.transfer = api_transfer;
1110		1407
1111	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1408	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1118	struct coro *coro;	1415	struct coro *coro;
1119	HV *hv;	1416	HV *hv;
1120	int i;	1417	int i;
1121		1418
1122	Newz (0, coro, 1, struct coro);	1419	Newz (0, coro, 1, struct coro);
1123	coro->args = newAV ();	1420	coro->args = newAV ();
1124	coro->save = CORO_SAVE_ALL;
1125	coro->flags = CF_NEW;	1421	coro->flags = CF_NEW;
1126		1422
		1423	if (coro_first) coro_first->prev = coro;
		1424	coro->next = coro_first;
		1425	coro_first = coro;
		1426
1127	hv = newHV ();	1427	coro->hv = hv = newHV ();
1128	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1428	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1129	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1429	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1130		1430
1131	for (i = 1; i < items; i++)	1431	for (i = 1; i < items; i++)
1132	av_push (coro->args, newSVsv (ST (i)));	1432	av_push (coro->args, newSVsv (ST (i)));
1133	}	1433	}
1134	OUTPUT:	1434	OUTPUT:
1135	RETVAL	1435	RETVAL
1136		1436
1137	int	1437	# these not obviously related functions are all rolled into the same xs
1138	save (SV *coro, int new_save = -1)	1438	# function to increase chances that they all will call transfer with the same
1139	CODE:	1439	# stack offset
1140	RETVAL = api_save (coro, new_save);
1141	OUTPUT:
1142	RETVAL
1143
1144	void	1440	void
1145	_set_stacklevel (...)	1441	_set_stacklevel (...)
1146	ALIAS:	1442	ALIAS:
1147	Coro::State::transfer = 1	1443	Coro::State::transfer = 1
1148	Coro::schedule = 2	1444	Coro::schedule = 2
…		…
1161		1457
1162	case 1:	1458	case 1:
1163	if (items != 2)	1459	if (items != 2)
1164	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1460	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1165		1461
1166	prepare_transfer (&ta, ST (0), ST (1));	1462	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1167	break;	1463	break;
1168		1464
1169	case 2:	1465	case 2:
1170	prepare_schedule (&ta);	1466	prepare_schedule (aTHX_ &ta);
1171	break;	1467	break;
1172		1468
1173	case 3:	1469	case 3:
1174	prepare_cede (&ta);	1470	prepare_cede (aTHX_ &ta);
1175	break;	1471	break;
1176		1472
1177	case 4:	1473	case 4:
1178	if (!prepare_cede_notself (&ta))	1474	if (!prepare_cede_notself (aTHX_ &ta))
1179	XSRETURN_EMPTY;	1475	XSRETURN_EMPTY;
1180		1476
1181	break;	1477	break;
1182	}	1478	}
1183		1479
1184	BARRIER;	1480	BARRIER;
1185	TRANSFER (ta);	1481	TRANSFER (ta);
1186	}
1187		1482
1188	void	1483	if (GIMME_V != G_VOID && ta.next != ta.prev)
1189	_clone_state_from (SV *dst, SV *src)	1484	XSRETURN_YES;
		1485	}
		1486
		1487	bool
		1488	_destroy (SV *coro_sv)
1190	CODE:	1489	CODE:
1191	{	1490	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1192	struct coro *coro_src = SvSTATE (src);	1491	OUTPUT:
1193		1492	RETVAL
1194	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1195
1196	++coro_src->refcnt;
1197	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1198	}
1199		1493
1200	void	1494	void
1201	_exit (code)	1495	_exit (code)
1202	int code	1496	int code
1203	PROTOTYPE: $	1497	PROTOTYPE: $
1204	CODE:	1498	CODE:
1205	_exit (code);	1499	_exit (code);
1206		1500
1207	int	1501	int
		1502	cctx_stacksize (int new_stacksize = 0)
		1503	CODE:
		1504	RETVAL = coro_stacksize;
		1505	if (new_stacksize)
		1506	coro_stacksize = new_stacksize;
		1507	OUTPUT:
		1508	RETVAL
		1509
		1510	int
1208	cctx_count ()	1511	cctx_count ()
1209	CODE:	1512	CODE:
1210	RETVAL = cctx_count;	1513	RETVAL = cctx_count;
1211	OUTPUT:	1514	OUTPUT:
1212	RETVAL	1515	RETVAL
…		…
1216	CODE:	1519	CODE:
1217	RETVAL = cctx_idle;	1520	RETVAL = cctx_idle;
1218	OUTPUT:	1521	OUTPUT:
1219	RETVAL	1522	RETVAL
1220		1523
		1524	void
		1525	list ()
		1526	PPCODE:
		1527	{
		1528	struct coro *coro;
		1529	for (coro = coro_first; coro; coro = coro->next)
		1530	if (coro->hv)
		1531	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1532	}
		1533
		1534	void
		1535	call (Coro::State coro, SV *coderef)
		1536	ALIAS:
		1537	eval = 1
		1538	CODE:
		1539	{
		1540	if (coro->mainstack)
		1541	{
		1542	struct coro temp;
		1543	Zero (&temp, 1, struct coro);
		1544
		1545	if (!(coro->flags & CF_RUNNING))
		1546	{
		1547	save_perl (aTHX_ &temp);
		1548	load_perl (aTHX_ coro);
		1549	}
		1550
		1551	{
		1552	dSP;
		1553	ENTER;
		1554	SAVETMPS;
		1555	PUSHMARK (SP);
		1556	PUTBACK;
		1557	if (ix)
		1558	eval_sv (coderef, 0);
		1559	else
		1560	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1561	SPAGAIN;
		1562	FREETMPS;
		1563	LEAVE;
		1564	PUTBACK;
		1565	}
		1566
		1567	if (!(coro->flags & CF_RUNNING))
		1568	{
		1569	save_perl (aTHX_ coro);
		1570	load_perl (aTHX_ &temp);
		1571	}
		1572	}
		1573	}
		1574
		1575	SV *
		1576	is_ready (Coro::State coro)
		1577	PROTOTYPE: $
		1578	ALIAS:
		1579	is_ready = CF_READY
		1580	is_running = CF_RUNNING
		1581	is_new = CF_NEW
		1582	is_destroyed = CF_DESTROYED
		1583	CODE:
		1584	RETVAL = boolSV (coro->flags & ix);
		1585	OUTPUT:
		1586	RETVAL
		1587
		1588	void
		1589	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1590
		1591	SV *
		1592	has_stack (Coro::State coro)
		1593	PROTOTYPE: $
		1594	CODE:
		1595	RETVAL = boolSV (!!coro->cctx);
		1596	OUTPUT:
		1597	RETVAL
		1598
		1599	int
		1600	is_traced (Coro::State coro)
		1601	PROTOTYPE: $
		1602	CODE:
		1603	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1604	OUTPUT:
		1605	RETVAL
		1606
		1607	IV
		1608	rss (Coro::State coro)
		1609	PROTOTYPE: $
		1610	ALIAS:
		1611	usecount = 1
		1612	CODE:
		1613	switch (ix)
		1614	{
		1615	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1616	case 1: RETVAL = coro->usecount; break;
		1617	}
		1618	OUTPUT:
		1619	RETVAL
		1620
		1621
1221	MODULE = Coro::State PACKAGE = Coro	1622	MODULE = Coro::State PACKAGE = Coro
1222		1623
1223	BOOT:	1624	BOOT:
1224	{	1625	{
1225	int i;	1626	int i;
		1627
		1628	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1629	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1630	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1631
		1632	coro_current = get_sv ("Coro::current", FALSE);
		1633	SvREADONLY_on (coro_current);
1226		1634
1227	coro_stash = gv_stashpv ("Coro", TRUE);	1635	coro_stash = gv_stashpv ("Coro", TRUE);
1228		1636
1229	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1637	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1230	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1638	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1639	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1640	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1641	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1642	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1235		1643
1236	coro_current = get_sv ("Coro::current", FALSE);
1237	SvREADONLY_on (coro_current);
1238
1239	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1644	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1240	coro_ready[i] = newAV ();	1645	coro_ready[i] = newAV ();
1241		1646
1242	{	1647	{
1243	SV *sv = perl_get_sv("Coro::API", 1);	1648	SV *sv = perl_get_sv("Coro::API", 1);
1244		1649
1245	coroapi.schedule = api_schedule;	1650	coroapi.schedule = api_schedule;
1246	coroapi.save = api_save;
1247	coroapi.cede = api_cede;	1651	coroapi.cede = api_cede;
1248	coroapi.cede_notself = api_cede_notself;	1652	coroapi.cede_notself = api_cede_notself;
1249	coroapi.ready = api_ready;	1653	coroapi.ready = api_ready;
1250	coroapi.is_ready = api_is_ready;	1654	coroapi.is_ready = api_is_ready;
1251	coroapi.nready = &coro_nready;	1655	coroapi.nready = &coro_nready;
…		…
1292	CODE:	1696	CODE:
1293	RETVAL = boolSV (api_ready (self));	1697	RETVAL = boolSV (api_ready (self));
1294	OUTPUT:	1698	OUTPUT:
1295	RETVAL	1699	RETVAL
1296		1700
1297	SV *
1298	is_ready (SV *self)
1299	PROTOTYPE: $
1300	CODE:
1301	RETVAL = boolSV (api_is_ready (self));
1302	OUTPUT:
1303	RETVAL
1304
1305	int	1701	int
1306	nready (...)	1702	nready (...)
1307	PROTOTYPE:	1703	PROTOTYPE:
1308	CODE:	1704	CODE:
1309	RETVAL = coro_nready;	1705	RETVAL = coro_nready;
1310	OUTPUT:	1706	OUTPUT:
1311	RETVAL	1707	RETVAL
1312		1708
		1709	# for async_pool speedup
		1710	void
		1711	_pool_1 (SV *cb)
		1712	CODE:
		1713	{
		1714	struct coro *coro = SvSTATE (coro_current);
		1715	HV *hv = (HV *)SvRV (coro_current);
		1716	AV *defav = GvAV (PL_defgv);
		1717	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1718	AV *invoke_av;
		1719	int i, len;
		1720
		1721	if (!invoke)
		1722	croak ("\3terminate\2\n");
		1723
		1724	SvREFCNT_dec (coro->saved_deffh);
		1725	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1726
		1727	hv_store (hv, "desc", sizeof ("desc") - 1,
		1728	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1729
		1730	invoke_av = (AV *)SvRV (invoke);
		1731	len = av_len (invoke_av);
		1732
		1733	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1734
		1735	if (len > 0)
		1736	{
		1737	av_fill (defav, len - 1);
		1738	for (i = 0; i < len; ++i)
		1739	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1740	}
		1741
		1742	SvREFCNT_dec (invoke);
		1743	}
		1744
		1745	void
		1746	_pool_2 (SV *cb)
		1747	CODE:
		1748	{
		1749	struct coro *coro = SvSTATE (coro_current);
		1750
		1751	sv_setsv (cb, &PL_sv_undef);
		1752
		1753	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1754	coro->saved_deffh = 0;
		1755
		1756	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1757	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1758	croak ("\3terminate\2\n");
		1759
		1760	av_clear (GvAV (PL_defgv));
		1761	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1762	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1763
		1764	coro->prio = 0;
		1765
		1766	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1767	api_trace (coro_current, 0);
		1768
		1769	av_push (av_async_pool, newSVsv (coro_current));
		1770	}
		1771
		1772
1313	MODULE = Coro::State PACKAGE = Coro::AIO	1773	MODULE = Coro::State PACKAGE = Coro::AIO
1314		1774
1315	SV *	1775	SV *
1316	_get_state ()	1776	_get_state ()
1317	CODE:	1777	CODE:

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