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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 1.181 by root, Wed Oct 3 17:37:33 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	GV *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	GV *defoutgv;
		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	PL_defoutgv = c->deffh;
321	{	396	PL_rs = c->irssv;
322	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))	397	GvSV (irsgv) = c->irssv_sv;
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		398
332	{	399	{
333	dSP;	400	dSP;
334	CV *cv;	401	CV *cv;
335		402
336	/* now do the ugly restore mess */	403	/* now do the ugly restore mess */
337	while ((cv = (CV *)POPs))	404	while ((cv = (CV *)POPs))
338	{	405	{
339	put_padlist (cv); /* mark this padlist as available */	406	put_padlist (aTHX_ cv); /* mark this padlist as available */
340	CvDEPTH (cv) = PTR2IV (POPs);	407	CvDEPTH (cv) = PTR2IV (POPs);
341	CvPADLIST (cv) = (AV *)POPs;	408	CvPADLIST (cv) = (AV *)POPs;
342	}	409	}
343		410
344	PUTBACK;	411	PUTBACK;
345	}	412	}
346	}	413	}
347		414
348	static void	415	static void
349	save_perl (Coro__State c)	416	save_perl (pTHX_ Coro__State c)
350	{	417	{
351	{	418	{
352	dSP;	419	dSP;
353	I32 cxix = cxstack_ix;	420	I32 cxix = cxstack_ix;
354	PERL_CONTEXT *ccstk = cxstack;	421	PERL_CONTEXT *ccstk = cxstack;
…		…
357	/*	424	/*
358	* the worst thing you can imagine happens first - we have to save	425	* the worst thing you can imagine happens first - we have to save
359	* (and reinitialize) all cv's in the whole callchain :(	426	* (and reinitialize) all cv's in the whole callchain :(
360	*/	427	*/
361		428
362	EXTEND (SP, 3 + 1);
363	PUSHs (Nullsv);	429	XPUSHs (Nullsv);
364	/* this loop was inspired by pp_caller */	430	/* this loop was inspired by pp_caller */
365	for (;;)	431	for (;;)
366	{	432	{
367	while (cxix >= 0)	433	while (cxix >= 0)
368	{	434	{
369	PERL_CONTEXT *cx = &ccstk[cxix--];	435	PERL_CONTEXT *cx = &ccstk[cxix--];
370		436
371	if (CxTYPE (cx) == CXt_SUB)	437	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
372	{	438	{
373	CV *cv = cx->blk_sub.cv;	439	CV *cv = cx->blk_sub.cv;
374		440
375	if (CvDEPTH (cv))	441	if (CvDEPTH (cv))
376	{	442	{
…		…
378	PUSHs ((SV *)CvPADLIST (cv));	444	PUSHs ((SV *)CvPADLIST (cv));
379	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	445	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
380	PUSHs ((SV *)cv);	446	PUSHs ((SV *)cv);
381		447
382	CvDEPTH (cv) = 0;	448	CvDEPTH (cv) = 0;
383	get_padlist (cv);	449	get_padlist (aTHX_ cv);
384	}	450	}
385	}	451	}
386	}	452	}
387		453
388	if (top_si->si_type == PERLSI_MAIN)	454	if (top_si->si_type == PERLSI_MAIN)
389	break;	455	break;
390		456
391	top_si = top_si->si_prev;	457	top_si = top_si->si_prev;
392	ccstk = top_si->si_cxstack;	458	ccstk = top_si->si_cxstack;
393	cxix = top_si->si_cxix;	459	cxix = top_si->si_cxix;
394	}	460	}
395		461
396	PUTBACK;	462	PUTBACK;
397	}	463	}
398		464
399	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	465	c->defav = GvAV (PL_defgv);
400	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	466	c->defsv = DEFSV;
401	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	467	c->errsv = ERRSV;
402	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	468	c->deffh = PL_defoutgv;
		469	c->irssv = PL_rs;
		470	c->irssv_sv = GvSV (irsgv);
403		471
404	#define VAR(name,type)c->name = PL_ ## name;	472	#define VAR(name,type)c->name = PL_ ## name;
405	# include "state.h"	473	# include "state.h"
406	#undef VAR	474	#undef VAR
407	}	475	}
…		…
410	* allocate various perl stacks. This is an exact copy	478	* allocate various perl stacks. This is an exact copy
411	* of perl.c:init_stacks, except that it uses less memory	479	* of perl.c:init_stacks, except that it uses less memory
412	* on the (sometimes correct) assumption that coroutines do	480	* on the (sometimes correct) assumption that coroutines do
413	* not usually need a lot of stackspace.	481	* not usually need a lot of stackspace.
414	*/	482	*/
415	#if PREFER_PERL_FUNCTIONS	483	#if CORO_PREFER_PERL_FUNCTIONS
416	# define coro_init_stacks init_stacks	484	# define coro_init_stacks init_stacks
417	#else	485	#else
418	static void	486	static void
419	coro_init_stacks ()	487	coro_init_stacks (pTHX)
420	{	488	{
421	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	489	PL_curstackinfo = new_stackinfo(64, 6);
422	PL_curstackinfo->si_type = PERLSI_MAIN;	490	PL_curstackinfo->si_type = PERLSI_MAIN;
423	PL_curstack = PL_curstackinfo->si_stack;	491	PL_curstack = PL_curstackinfo->si_stack;
424	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	492	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
425		493
426	PL_stack_base = AvARRAY(PL_curstack);	494	PL_stack_base = AvARRAY(PL_curstack);
427	PL_stack_sp = PL_stack_base;	495	PL_stack_sp = PL_stack_base;
428	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	496	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
429		497
430	New(50,PL_tmps_stack,128,SV*);	498	New(50,PL_tmps_stack,64,SV*);
431	PL_tmps_floor = -1;	499	PL_tmps_floor = -1;
432	PL_tmps_ix = -1;	500	PL_tmps_ix = -1;
433	PL_tmps_max = 128;	501	PL_tmps_max = 64;
434		502
435	New(54,PL_markstack,32,I32);	503	New(54,PL_markstack,16,I32);
436	PL_markstack_ptr = PL_markstack;	504	PL_markstack_ptr = PL_markstack;
437	PL_markstack_max = PL_markstack + 32;	505	PL_markstack_max = PL_markstack + 16;
438		506
439	#ifdef SET_MARK_OFFSET	507	#ifdef SET_MARK_OFFSET
440	SET_MARK_OFFSET;	508	SET_MARK_OFFSET;
441	#endif	509	#endif
442		510
443	New(54,PL_scopestack,32,I32);	511	New(54,PL_scopestack,16,I32);
444	PL_scopestack_ix = 0;	512	PL_scopestack_ix = 0;
445	PL_scopestack_max = 32;	513	PL_scopestack_max = 16;
446		514
447	New(54,PL_savestack,64,ANY);	515	New(54,PL_savestack,64,ANY);
448	PL_savestack_ix = 0;	516	PL_savestack_ix = 0;
449	PL_savestack_max = 64;	517	PL_savestack_max = 64;
450		518
451	#if !PERL_VERSION_ATLEAST (5,9,0)	519	#if !PERL_VERSION_ATLEAST (5,9,0)
452	New(54,PL_retstack,16,OP*);	520	New(54,PL_retstack,4,OP*);
453	PL_retstack_ix = 0;	521	PL_retstack_ix = 0;
454	PL_retstack_max = 16;	522	PL_retstack_max = 4;
455	#endif	523	#endif
456	}	524	}
457	#endif	525	#endif
458		526
459	/*	527	/*
460	* destroy the stacks, the callchain etc...	528	* destroy the stacks, the callchain etc...
461	*/	529	*/
462	static void	530	static void
463	coro_destroy_stacks ()	531	coro_destroy_stacks (pTHX)
464	{	532	{
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)	533	while (PL_curstackinfo->si_next)
479	PL_curstackinfo = PL_curstackinfo->si_next;	534	PL_curstackinfo = PL_curstackinfo->si_next;
480		535
481	while (PL_curstackinfo)	536	while (PL_curstackinfo)
482	{	537	{
…		…
497	#if !PERL_VERSION_ATLEAST (5,9,0)	552	#if !PERL_VERSION_ATLEAST (5,9,0)
498	Safefree (PL_retstack);	553	Safefree (PL_retstack);
499	#endif	554	#endif
500	}	555	}
501		556
502	static void	557	static size_t
503	setup_coro (struct coro *coro)	558	coro_rss (pTHX_ struct coro *coro)
		559	{
		560	size_t rss = sizeof (coro);
		561
		562	if (coro->mainstack)
		563	{
		564	if (coro->flags & CF_RUNNING)
		565	{
		566	#define VAR(name,type)coro->name = PL_ ## name;
		567	# include "state.h"
		568	#undef VAR
		569	}
		570
		571	rss += sizeof (coro->curstackinfo);
		572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		575	rss += coro->tmps_max * sizeof (SV *);
		576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		577	rss += coro->scopestack_max * sizeof (I32);
		578	rss += coro->savestack_max * sizeof (ANY);
		579
		580	#if !PERL_VERSION_ATLEAST (5,9,0)
		581	rss += coro->retstack_max * sizeof (OP *);
		582	#endif
		583	}
		584
		585	return rss;
		586	}
		587
		588	/** coroutine stack handling ************************************************/
		589
		590	static void
		591	coro_setup (pTHX_ struct coro *coro)
504	{	592	{
505	/*	593	/*
506	* emulate part of the perl startup here.	594	* emulate part of the perl startup here.
507	*/	595	*/
508
509	coro_init_stacks ();	596	coro_init_stacks (aTHX);
510		597
		598	PL_runops = RUNOPS_DEFAULT;
511	PL_curcop = &PL_compiling;	599	PL_curcop = &PL_compiling;
512	PL_in_eval = EVAL_NULL;	600	PL_in_eval = EVAL_NULL;
		601	PL_comppad = 0;
513	PL_curpm = 0;	602	PL_curpm = 0;
514	PL_localizing = 0;	603	PL_localizing = 0;
515	PL_dirty = 0;	604	PL_dirty = 0;
516	PL_restartop = 0;	605	PL_restartop = 0;
		606
		607	GvSV (PL_defgv) = NEWSV (0, 0);
		608	GvAV (PL_defgv) = coro->args; coro->args = 0;
		609	GvSV (PL_errgv) = NEWSV (0, 0);
		610	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		611	PL_rs = newSVsv (GvSV (irsgv));
		612
		613	{
		614	IO *io = newIO ();
		615	PL_defoutgv = newGVgen ("Coro");
		616	GvIOp(PL_defoutgv) = io;
		617	IoTYPE (io) = IoTYPE_WRONLY;
		618	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
		619	IoFLAGS (io) |= IOf_FLUSH;
		620	}
517		621
518	{	622	{
519	dSP;	623	dSP;
520	LOGOP myop;	624	LOGOP myop;
521		625
522	SvREFCNT_dec (GvAV (PL_defgv));
523	GvAV (PL_defgv) = coro->args; coro->args = 0;
524
525	Zero (&myop, 1, LOGOP);	626	Zero (&myop, 1, LOGOP);
526	myop.op_next = Nullop;	627	myop.op_next = Nullop;
527	myop.op_flags = OPf_WANT_VOID;	628	myop.op_flags = OPf_WANT_VOID;
528		629
529	PUSHMARK (SP);	630	PUSHMARK (SP);
530	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	631	XPUSHs (av_shift (GvAV (PL_defgv)));
531	PUTBACK;	632	PUTBACK;
532	PL_op = (OP *)&myop;	633	PL_op = (OP *)&myop;
533	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	634	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
534	SPAGAIN;	635	SPAGAIN;
535	}	636	}
536		637
537	ENTER; /* necessary e.g. for dounwind */	638	ENTER; /* necessary e.g. for dounwind */
538	}	639	}
539		640
540	static void	641	static void
		642	coro_destroy (pTHX_ struct coro *coro)
		643	{
		644	if (!IN_DESTRUCT)
		645	{
		646	/* restore all saved variables and stuff */
		647	LEAVE_SCOPE (0);
		648	assert (PL_tmps_floor == -1);
		649
		650	/* free all temporaries */
		651	FREETMPS;
		652	assert (PL_tmps_ix == -1);
		653
		654	/* unwind all extra stacks */
		655	POPSTACK_TO (PL_mainstack);
		656
		657	/* unwind main stack */
		658	dounwind (-1);
		659	}
		660
		661	SvREFCNT_dec (GvSV (PL_defgv));
		662	SvREFCNT_dec (GvAV (PL_defgv));
		663	SvREFCNT_dec (GvSV (PL_errgv));
		664	SvREFCNT_dec (PL_defoutgv);
		665	SvREFCNT_dec (PL_rs);
		666	SvREFCNT_dec (GvSV (irsgv));
		667
		668	SvREFCNT_dec (coro->defoutgv);
		669	//SvREFCNT_dec (coro->throw);
		670
		671	coro_destroy_stacks (aTHX);
		672	}
		673
		674	static void
541	free_coro_mortal ()	675	free_coro_mortal (pTHX)
542	{	676	{
543	if (coro_mortal)	677	if (coro_mortal)
544	{	678	{
545	SvREFCNT_dec (coro_mortal);	679	SvREFCNT_dec (coro_mortal);
546	coro_mortal = 0;	680	coro_mortal = 0;
547	}	681	}
548	}	682	}
549		683
		684	static int
		685	runops_trace (pTHX)
		686	{
		687	COP *oldcop = 0;
		688	int oldcxix = -2;
		689	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		690	coro_cctx *cctx = coro->cctx;
		691
		692	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		693	{
		694	PERL_ASYNC_CHECK ();
		695
		696	if (cctx->flags & CC_TRACE_ALL)
		697	{
		698	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		699	{
		700	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		701	SV **bot, **top;
		702	AV *av = newAV (); /* return values */
		703	SV **cb;
		704	dSP;
		705
		706	GV *gv = CvGV (cx->blk_sub.cv);
		707	SV *fullname = sv_2mortal (newSV (0));
		708	if (isGV (gv))
		709	gv_efullname3 (fullname, gv, 0);
		710
		711	bot = PL_stack_base + cx->blk_oldsp + 1;
		712	top = cx->blk_gimme == G_ARRAY ? SP + 1
		713	: cx->blk_gimme == G_SCALAR ? bot + 1
		714	: bot;
		715
		716	while (bot < top)
		717	av_push (av, SvREFCNT_inc (*bot++));
		718
		719	PL_runops = RUNOPS_DEFAULT;
		720	ENTER;
		721	SAVETMPS;
		722	EXTEND (SP, 3);
		723	PUSHMARK (SP);
		724	PUSHs (&PL_sv_no);
		725	PUSHs (fullname);
		726	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		727	PUTBACK;
		728	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		729	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		730	SPAGAIN;
		731	FREETMPS;
		732	LEAVE;
		733	PL_runops = runops_trace;
		734	}
		735
		736	if (oldcop != PL_curcop)
		737	{
		738	oldcop = PL_curcop;
		739
		740	if (PL_curcop != &PL_compiling)
		741	{
		742	SV **cb;
		743
		744	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		745	{
		746	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		747
		748	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		749	{
		750	runops_proc_t old_runops = PL_runops;
		751	dSP;
		752	GV *gv = CvGV (cx->blk_sub.cv);
		753	SV *fullname = sv_2mortal (newSV (0));
		754
		755	if (isGV (gv))
		756	gv_efullname3 (fullname, gv, 0);
		757
		758	PL_runops = RUNOPS_DEFAULT;
		759	ENTER;
		760	SAVETMPS;
		761	EXTEND (SP, 3);
		762	PUSHMARK (SP);
		763	PUSHs (&PL_sv_yes);
		764	PUSHs (fullname);
		765	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		766	PUTBACK;
		767	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		768	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		769	SPAGAIN;
		770	FREETMPS;
		771	LEAVE;
		772	PL_runops = runops_trace;
		773	}
		774
		775	oldcxix = cxstack_ix;
		776	}
		777
		778	if (cctx->flags & CC_TRACE_LINE)
		779	{
		780	dSP;
		781
		782	PL_runops = RUNOPS_DEFAULT;
		783	ENTER;
		784	SAVETMPS;
		785	EXTEND (SP, 3);
		786	PL_runops = RUNOPS_DEFAULT;
		787	PUSHMARK (SP);
		788	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		789	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		790	PUTBACK;
		791	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		792	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		793	SPAGAIN;
		794	FREETMPS;
		795	LEAVE;
		796	PL_runops = runops_trace;
		797	}
		798	}
		799	}
		800	}
		801	}
		802
		803	TAINT_NOT;
		804	return 0;
		805	}
		806
550	/* inject a fake call to Coro::State::_cctx_init into the execution */	807	/* inject a fake call to Coro::State::_cctx_init into the execution */
		808	/* _cctx_init should be careful, as it could be called at almost any time */
		809	/* during execution of a perl program */
551	static void NOINLINE	810	static void NOINLINE
552	prepare_cctx (coro_cctx *cctx)	811	prepare_cctx (pTHX_ coro_cctx *cctx)
553	{	812	{
554	dSP;	813	dSP;
555	LOGOP myop;	814	LOGOP myop;
		815
		816	PL_top_env = &PL_start_env;
		817
		818	if (cctx->flags & CC_TRACE)
		819	PL_runops = runops_trace;
556		820
557	Zero (&myop, 1, LOGOP);	821	Zero (&myop, 1, LOGOP);
558	myop.op_next = PL_op;	822	myop.op_next = PL_op;
559	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	823	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
560		824
…		…
566	PL_op = (OP *)&myop;	830	PL_op = (OP *)&myop;
567	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	831	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
568	SPAGAIN;	832	SPAGAIN;
569	}	833	}
570		834
		835	/*
		836	* this is a _very_ stripped down perl interpreter ;)
		837	*/
571	static void	838	static void
572	coro_run (void *arg)	839	coro_run (void *arg)
573	{	840	{
		841	dTHX;
		842
574	/* coro_run is the alternative tail of transfer(), so unlock here. */	843	/* coro_run is the alternative tail of transfer(), so unlock here. */
575	UNLOCK;	844	UNLOCK;
576		845
577	/*	846	/* we now skip the entersub that lead to transfer() */
578	* this is a _very_ stripped down perl interpreter ;)	847	PL_op = PL_op->op_next;
579	*/
580	PL_top_env = &PL_start_env;
581		848
582	/* inject call to cctx_init */	849	/* inject a fake subroutine call to cctx_init */
583	prepare_cctx ((coro_cctx *)arg);	850	prepare_cctx (aTHX_ (coro_cctx *)arg);
584		851
585	/* somebody will hit me for both perl_run and PL_restartop */	852	/* somebody or something will hit me for both perl_run and PL_restartop */
586	PL_restartop = PL_op;	853	PL_restartop = PL_op;
587	perl_run (PL_curinterp);	854	perl_run (PL_curinterp);
588		855
589	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	856	/*
590	abort ();	857	* If perl-run returns we assume exit() was being called or the coro
		858	* fell off the end, which seems to be the only valid (non-bug)
		859	* reason for perl_run to return. We try to exit by jumping to the
		860	* bootstrap-time "top" top_env, as we cannot restore the "main"
		861	* coroutine as Coro has no such concept
		862	*/
		863	PL_top_env = main_top_env;
		864	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
591	}	865	}
592		866
593	static coro_cctx *	867	static coro_cctx *
594	cctx_new ()	868	cctx_new ()
595	{	869	{
596	coro_cctx *cctx;	870	coro_cctx *cctx;
		871	void *stack_start;
		872	size_t stack_size;
597		873
598	++cctx_count;	874	++cctx_count;
599		875
600	Newz (0, cctx, 1, coro_cctx);	876	Newz (0, cctx, 1, coro_cctx);
601		877
602	#if HAVE_MMAP	878	#if HAVE_MMAP
603		879
604	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	880	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
605	/* mmap supposedly does allocate-on-write for us */	881	/* 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);	882	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
607		883
608	if (cctx->sptr == (void *)-1)	884	if (cctx->sptr != (void *)-1)
609	{
610	perror ("FATAL: unable to mmap stack for coroutine");
611	_exit (EXIT_FAILURE);
612	}	885	{
613
614	# if STACKGUARD	886	# if CORO_STACKGUARD
615	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	887	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
616	# endif	888	# endif
		889	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		890	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		891	cctx->flags |= CC_MAPPED;
		892	}
		893	else
		894	#endif
		895	{
		896	cctx->ssize = coro_stacksize * (long)sizeof (long);
		897	New (0, cctx->sptr, coro_stacksize, long);
617		898
618	#else
619
620	cctx->ssize = STACKSIZE * (long)sizeof (long);
621	New (0, cctx->sptr, STACKSIZE, long);
622
623	if (!cctx->sptr)	899	if (!cctx->sptr)
624	{	900	{
625	perror ("FATAL: unable to malloc stack for coroutine");	901	perror ("FATAL: unable to allocate stack for coroutine");
626	_exit (EXIT_FAILURE);	902	_exit (EXIT_FAILURE);
627	}	903	}
628		904
629	#endif	905	stack_start = cctx->sptr;
		906	stack_size = cctx->ssize;
		907	}
630		908
631	#if USE_VALGRIND	909	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);	910	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
639		911
640	return cctx;	912	return cctx;
641	}	913	}
642		914
643	static void	915	static void
…		…
646	if (!cctx)	918	if (!cctx)
647	return;	919	return;
648		920
649	--cctx_count;	921	--cctx_count;
650		922
651	#if USE_VALGRIND	923	#if CORO_USE_VALGRIND
652	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	924	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
653	#endif	925	#endif
654		926
655	#if HAVE_MMAP	927	#if HAVE_MMAP
		928	if (cctx->flags & CC_MAPPED)
656	munmap (cctx->sptr, cctx->ssize);	929	munmap (cctx->sptr, cctx->ssize);
657	#else	930	else
		931	#endif
658	Safefree (cctx->sptr);	932	Safefree (cctx->sptr);
659	#endif
660		933
661	Safefree (cctx);	934	Safefree (cctx);
662	}	935	}
663		936
664	static coro_cctx *	937	static coro_cctx *
665	cctx_get ()	938	cctx_get (pTHX)
666	{	939	{
667	coro_cctx *cctx;
668
669	if (cctx_first)	940	while (cctx_first)
670	{	941	{
671	cctx = cctx_first;	942	coro_cctx *cctx = cctx_first;
672	cctx_first = cctx->next;	943	cctx_first = cctx->next;
673	--cctx_idle;	944	--cctx_idle;
674	}	945
675	else	946	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
676	{	947	return cctx;
677	cctx = cctx_new ();	948
678	PL_op = PL_op->op_next;	949	cctx_destroy (cctx);
679	}	950	}
680		951
681	return cctx;	952	return cctx_new ();
682	}	953	}
683		954
684	static void	955	static void
685	cctx_put (coro_cctx *cctx)	956	cctx_put (coro_cctx *cctx)
686	{	957	{
…		…
689	{	960	{
690	coro_cctx *first = cctx_first;	961	coro_cctx *first = cctx_first;
691	cctx_first = first->next;	962	cctx_first = first->next;
692	--cctx_idle;	963	--cctx_idle;
693		964
694	assert (!first->inuse);
695	cctx_destroy (first);	965	cctx_destroy (first);
696	}	966	}
697		967
698	++cctx_idle;	968	++cctx_idle;
699	cctx->next = cctx_first;	969	cctx->next = cctx_first;
700	cctx_first = cctx;	970	cctx_first = cctx;
701	}	971	}
702		972
703	/* never call directly, always through the coro_state_transfer global variable */	973	/** coroutine switching *****************************************************/
		974
704	static void NOINLINE	975	static void NOINLINE
		976	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		977	{
		978	if (prev != next)
		979	{
		980	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		981	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		982
		983	if (next->flags & CF_RUNNING)
		984	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		985
		986	if (next->flags & CF_DESTROYED)
		987	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		988
		989	if (PL_lex_state != LEX_NOTPARSING)
		990	croak ("Coro::State::transfer called while parsing, but this is not supported");
		991	}
		992	}
		993
		994	/* always use the TRANSFER macro */
		995	static void NOINLINE
705	transfer (struct coro *prev, struct coro *next)	996	transfer (pTHX_ struct coro *prev, struct coro *next)
706	{	997	{
707	dSTACKLEVEL;	998	dSTACKLEVEL;
708		999
709	/* sometimes transfer is only called to set idle_sp */	1000	/* sometimes transfer is only called to set idle_sp */
710	if (!next)	1001	if (!next)
711	{	1002	{
712	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1003	((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 */	1004	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
714	}	1005	}
715	else if (prev != next)	1006	else if (prev != next)
716	{	1007	{
717	coro_cctx *prev__cctx;	1008	coro_cctx *prev__cctx;
718		1009
719	if (prev->flags & CF_NEW)	1010	if (prev->flags & CF_NEW)
720	{	1011	{
721	/* create a new empty context */	1012	/* create a new empty context */
722	Newz (0, prev->cctx, 1, coro_cctx);	1013	Newz (0, prev->cctx, 1, coro_cctx);
723	prev->cctx->inuse = 1;
724	prev->flags &= ~CF_NEW;	1014	prev->flags &= ~CF_NEW;
725	prev->flags |= CF_RUNNING;	1015	prev->flags |= CF_RUNNING;
726	}	1016	}
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		1017
735	prev->flags &= ~CF_RUNNING;	1018	prev->flags &= ~CF_RUNNING;
736	next->flags |= CF_RUNNING;	1019	next->flags |= CF_RUNNING;
737		1020
738	LOCK;	1021	LOCK;
…		…
740	if (next->flags & CF_NEW)	1023	if (next->flags & CF_NEW)
741	{	1024	{
742	/* need to start coroutine */	1025	/* need to start coroutine */
743	next->flags &= ~CF_NEW;	1026	next->flags &= ~CF_NEW;
744	/* first get rid of the old state */	1027	/* first get rid of the old state */
745	save_perl (prev);	1028	save_perl (aTHX_ prev);
746	/* setup coroutine call */	1029	/* setup coroutine call */
747	setup_coro (next);	1030	coro_setup (aTHX_ next);
748	/* need a new stack */
749	assert (!next->cctx);
750	}	1031	}
751	else	1032	else
752	{	1033	{
753	/* coroutine already started */	1034	/* coroutine already started */
754	save_perl (prev);	1035	save_perl (aTHX_ prev);
755	load_perl (next);	1036	load_perl (aTHX_ next);
756	}	1037	}
757		1038
758	prev__cctx = prev->cctx;	1039	prev__cctx = prev->cctx;
759		1040
760	/* possibly "free" the cctx */	1041	/* possibly "free" the cctx */
761	if (prev__cctx->idle_sp == STACKLEVEL)	1042	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
762	{	1043	{
763	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1044	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
764	assert (PL_top_env == prev__cctx->top_env);	1045	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
765		1046
766	prev->cctx = 0;	1047	prev->cctx = 0;
767		1048
768	cctx_put (prev__cctx);	1049	cctx_put (prev__cctx);
769	prev__cctx->inuse = 0;
770	}	1050	}
771		1051
		1052	++next->usecount;
		1053
772	if (!next->cctx)	1054	if (!next->cctx)
773	{
774	next->cctx = cctx_get ();	1055	next->cctx = cctx_get (aTHX);
775	assert (!next->cctx->inuse);
776	next->cctx->inuse = 1;
777	}
778		1056
779	if (prev__cctx != next->cctx)	1057	if (prev__cctx != next->cctx)
780	{	1058	{
781	prev__cctx->top_env = PL_top_env;	1059	prev__cctx->top_env = PL_top_env;
782	PL_top_env = next->cctx->top_env;	1060	PL_top_env = next->cctx->top_env;
783	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1061	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
784	}	1062	}
785		1063
786	free_coro_mortal ();	1064	free_coro_mortal (aTHX);
787
788	UNLOCK;	1065	UNLOCK;
789	}	1066	}
790	}	1067	}
791		1068
792	struct transfer_args	1069	struct transfer_args
793	{	1070	{
794	struct coro *prev, *next;	1071	struct coro *prev, *next;
795	};	1072	};
796		1073
797	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1074	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1075	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
798		1076
		1077	/** high level stuff ********************************************************/
		1078
799	static void	1079	static int
800	coro_state_destroy (struct coro *coro)	1080	coro_state_destroy (pTHX_ struct coro *coro)
801	{	1081	{
802	if (coro->refcnt--)	1082	if (coro->flags & CF_DESTROYED)
803	return;	1083	return 0;
		1084
		1085	coro->flags |= CF_DESTROYED;
		1086
		1087	if (coro->flags & CF_READY)
		1088	{
		1089	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1090	/* alternative: look through all ready queues and remove the coro */
		1091	LOCK;
		1092	--coro_nready;
		1093	UNLOCK;
		1094	}
		1095	else
		1096	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
804		1097
805	if (coro->mainstack && coro->mainstack != main_mainstack)	1098	if (coro->mainstack && coro->mainstack != main_mainstack)
806	{	1099	{
807	struct coro temp;	1100	struct coro temp;
808	Zero (&temp, 1, struct coro);
809	temp.save = CORO_SAVE_ALL;
810		1101
811	if (coro->flags & CF_RUNNING)	1102	if (coro->flags & CF_RUNNING)
812	croak ("FATAL: tried to destroy currently running coroutine");	1103	croak ("FATAL: tried to destroy currently running coroutine");
813		1104
814	save_perl (&temp);	1105	save_perl (aTHX_ &temp);
815	load_perl (coro);	1106	load_perl (aTHX_ coro);
816		1107
817	coro_destroy_stacks ();	1108	coro_destroy (aTHX_ coro);
818		1109
819	load_perl (&temp); /* this will get rid of defsv etc.. */	1110	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
820		1111
821	coro->mainstack = 0;	1112	coro->mainstack = 0;
822	}	1113	}
823		1114
824	cctx_destroy (coro->cctx);	1115	cctx_destroy (coro->cctx);
825	SvREFCNT_dec (coro->args);	1116	SvREFCNT_dec (coro->args);
826	Safefree (coro);	1117
		1118	if (coro->next) coro->next->prev = coro->prev;
		1119	if (coro->prev) coro->prev->next = coro->next;
		1120	if (coro == coro_first) coro_first = coro->next;
		1121
		1122	return 1;
827	}	1123	}
828		1124
829	static int	1125	static int
830	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1126	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
831	{	1127	{
832	struct coro *coro = (struct coro *)mg->mg_ptr;	1128	struct coro *coro = (struct coro *)mg->mg_ptr;
833	mg->mg_ptr = 0;	1129	mg->mg_ptr = 0;
834		1130
		1131	coro->hv = 0;
		1132
		1133	if (--coro->refcnt < 0)
		1134	{
835	coro_state_destroy (coro);	1135	coro_state_destroy (aTHX_ coro);
		1136	Safefree (coro);
		1137	}
836		1138
837	return 0;	1139	return 0;
838	}	1140	}
839		1141
840	static int	1142	static int
…		…
847	return 0;	1149	return 0;
848	}	1150	}
849		1151
850	static MGVTBL coro_state_vtbl = {	1152	static MGVTBL coro_state_vtbl = {
851	0, 0, 0, 0,	1153	0, 0, 0, 0,
852	coro_state_clear,	1154	coro_state_free,
853	0,	1155	0,
854	#ifdef MGf_DUP	1156	#ifdef MGf_DUP
855	coro_state_dup,	1157	coro_state_dup,
856	#else	1158	#else
857	# define MGf_DUP 0	1159	# define MGf_DUP 0
858	#endif	1160	#endif
859	};	1161	};
860		1162
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	1163	static void
884	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1164	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
885	{	1165	{
886	ta->prev = SvSTATE (prev_sv);	1166	ta->prev = SvSTATE (prev_sv);
887	ta->next = SvSTATE (next_sv);	1167	ta->next = SvSTATE (next_sv);
		1168	TRANSFER_CHECK (*ta);
888	}	1169	}
889		1170
890	static void	1171	static void
891	api_transfer (SV *prev_sv, SV *next_sv)	1172	api_transfer (SV *prev_sv, SV *next_sv)
892	{	1173	{
		1174	dTHX;
893	struct transfer_args ta;	1175	struct transfer_args ta;
894		1176
895	prepare_transfer (&ta, prev_sv, next_sv);	1177	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
896	TRANSFER (ta);	1178	TRANSFER (ta);
897	}	1179	}
898		1180
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 ********************************************************************/	1181	/** Coro ********************************************************************/
912		1182
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	1183	static void
926	coro_enq (SV *coro_sv)	1184	coro_enq (pTHX_ SV *coro_sv)
927	{	1185	{
928	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1186	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
929	coro_nready++;
930	}	1187	}
931		1188
932	static SV *	1189	static SV *
933	coro_deq (int min_prio)	1190	coro_deq (pTHX_ int min_prio)
934	{	1191	{
935	int prio = PRIO_MAX - PRIO_MIN;	1192	int prio = PRIO_MAX - PRIO_MIN;
936		1193
937	min_prio -= PRIO_MIN;	1194	min_prio -= PRIO_MIN;
938	if (min_prio < 0)	1195	if (min_prio < 0)
939	min_prio = 0;	1196	min_prio = 0;
940		1197
941	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1198	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
942	if (AvFILLp (coro_ready [prio]) >= 0)	1199	if (AvFILLp (coro_ready [prio]) >= 0)
943	{
944	coro_nready--;
945	return av_shift (coro_ready [prio]);	1200	return av_shift (coro_ready [prio]);
946	}
947		1201
948	return 0;	1202	return 0;
949	}	1203	}
950		1204
951	static int	1205	static int
952	api_ready (SV *coro_sv)	1206	api_ready (SV *coro_sv)
953	{	1207	{
		1208	dTHX;
954	struct coro *coro;	1209	struct coro *coro;
955		1210
956	if (SvROK (coro_sv))	1211	if (SvROK (coro_sv))
957	coro_sv = SvRV (coro_sv);	1212	coro_sv = SvRV (coro_sv);
958		1213
…		…
962	return 0;	1217	return 0;
963		1218
964	coro->flags |= CF_READY;	1219	coro->flags |= CF_READY;
965		1220
966	LOCK;	1221	LOCK;
967	coro_enq (SvREFCNT_inc (coro_sv));	1222	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1223	++coro_nready;
968	UNLOCK;	1224	UNLOCK;
969		1225
970	return 1;	1226	return 1;
971	}	1227	}
972		1228
973	static int	1229	static int
974	api_is_ready (SV *coro_sv)	1230	api_is_ready (SV *coro_sv)
975	{	1231	{
		1232	dTHX;
976	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1233	return !!(SvSTATE (coro_sv)->flags & CF_READY);
977	}	1234	}
978		1235
979	static void	1236	static void
980	prepare_schedule (struct transfer_args *ta)	1237	prepare_schedule (pTHX_ struct transfer_args *ta)
981	{	1238	{
982	SV *prev, *next;	1239	SV *prev_sv, *next_sv;
983		1240
984	for (;;)	1241	for (;;)
985	{	1242	{
986	LOCK;	1243	LOCK;
987	next = coro_deq (PRIO_MIN);	1244	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1245
		1246	/* nothing to schedule: call the idle handler */
		1247	if (!next_sv)
		1248	{
		1249	dSP;
		1250	UNLOCK;
		1251
		1252	ENTER;
		1253	SAVETMPS;
		1254
		1255	PUSHMARK (SP);
		1256	PUTBACK;
		1257	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1258
		1259	FREETMPS;
		1260	LEAVE;
		1261	continue;
		1262	}
		1263
		1264	ta->next = SvSTATE (next_sv);
		1265
		1266	/* cannot transfer to destroyed coros, skip and look for next */
		1267	if (ta->next->flags & CF_DESTROYED)
		1268	{
		1269	UNLOCK;
		1270	SvREFCNT_dec (next_sv);
		1271	/* coro_nready is already taken care of by destroy */
		1272	continue;
		1273	}
		1274
		1275	--coro_nready;
988	UNLOCK;	1276	UNLOCK;
989
990	if (next)
991	break;	1277	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	}	1278	}
1006	}
1007
1008	prev = SvRV (coro_current);
1009	SvRV_set (coro_current, next);
1010		1279
1011	/* free this only after the transfer */	1280	/* free this only after the transfer */
1012	LOCK;	1281	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);	1282	ta->prev = SvSTATE (prev_sv);
1021	ta->next = SvSTATE (next);	1283	TRANSFER_CHECK (*ta);
1022
1023	assert (ta->next->flags & CF_READY);	1284	assert (ta->next->flags & CF_READY);
1024	ta->next->flags &= ~CF_READY;	1285	ta->next->flags &= ~CF_READY;
1025	}	1286	SvRV_set (coro_current, next_sv);
1026		1287
		1288	LOCK;
		1289	free_coro_mortal (aTHX);
		1290	coro_mortal = prev_sv;
		1291	UNLOCK;
		1292	}
		1293
1027	static void	1294	static void
1028	prepare_cede (struct transfer_args *ta)	1295	prepare_cede (pTHX_ struct transfer_args *ta)
1029	{	1296	{
1030	api_ready (coro_current);	1297	api_ready (coro_current);
1031	prepare_schedule (ta);	1298	prepare_schedule (aTHX_ ta);
1032	}	1299	}
1033		1300
1034	static int	1301	static int
1035	prepare_cede_notself (struct transfer_args *ta)	1302	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1036	{	1303	{
1037	if (coro_nready)	1304	if (coro_nready)
1038	{	1305	{
1039	SV *prev = SvRV (coro_current);	1306	SV *prev = SvRV (coro_current);
1040	prepare_schedule (ta);	1307	prepare_schedule (aTHX_ ta);
1041	api_ready (prev);	1308	api_ready (prev);
1042	return 1;	1309	return 1;
1043	}	1310	}
1044	else	1311	else
1045	return 0;	1312	return 0;
1046	}	1313	}
1047		1314
1048	static void	1315	static void
1049	api_schedule (void)	1316	api_schedule (void)
1050	{	1317	{
		1318	dTHX;
1051	struct transfer_args ta;	1319	struct transfer_args ta;
1052		1320
1053	prepare_schedule (&ta);	1321	prepare_schedule (aTHX_ &ta);
1054	TRANSFER (ta);	1322	TRANSFER (ta);
1055	}	1323	}
1056		1324
1057	static int	1325	static int
1058	api_cede (void)	1326	api_cede (void)
1059	{	1327	{
		1328	dTHX;
1060	struct transfer_args ta;	1329	struct transfer_args ta;
1061		1330
1062	prepare_cede (&ta);	1331	prepare_cede (aTHX_ &ta);
1063		1332
1064	if (ta.prev != ta.next)	1333	if (ta.prev != ta.next)
1065	{	1334	{
1066	TRANSFER (ta);	1335	TRANSFER (ta);
1067	return 1;	1336	return 1;
…		…
1071	}	1340	}
1072		1341
1073	static int	1342	static int
1074	api_cede_notself (void)	1343	api_cede_notself (void)
1075	{	1344	{
		1345	dTHX;
1076	struct transfer_args ta;	1346	struct transfer_args ta;
1077		1347
1078	if (prepare_cede_notself (&ta))	1348	if (prepare_cede_notself (aTHX_ &ta))
1079	{	1349	{
1080	TRANSFER (ta);	1350	TRANSFER (ta);
1081	return 1;	1351	return 1;
1082	}	1352	}
1083	else	1353	else
1084	return 0;	1354	return 0;
1085	}	1355	}
1086		1356
		1357	static void
		1358	api_trace (SV *coro_sv, int flags)
		1359	{
		1360	dTHX;
		1361	struct coro *coro = SvSTATE (coro_sv);
		1362
		1363	if (flags & CC_TRACE)
		1364	{
		1365	if (!coro->cctx)
		1366	coro->cctx = cctx_new ();
		1367	else if (!(coro->cctx->flags & CC_TRACE))
		1368	croak ("cannot enable tracing on coroutine with custom stack");
		1369
		1370	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1371	}
		1372	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1373	{
		1374	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1375
		1376	if (coro->flags & CF_RUNNING)
		1377	PL_runops = RUNOPS_DEFAULT;
		1378	else
		1379	coro->runops = RUNOPS_DEFAULT;
		1380	}
		1381	}
		1382
1087	MODULE = Coro::State PACKAGE = Coro::State	1383	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1088		1384
1089	PROTOTYPES: DISABLE	1385	PROTOTYPES: DISABLE
1090		1386
1091	BOOT:	1387	BOOT:
1092	{	1388	{
1093	#ifdef USE_ITHREADS	1389	#ifdef USE_ITHREADS
1094	MUTEX_INIT (&coro_mutex);	1390	MUTEX_INIT (&coro_mutex);
1095	#endif	1391	#endif
1096	BOOT_PAGESIZE;	1392	BOOT_PAGESIZE;
1097		1393
		1394	irsgv = gv_fetchpv ("/", 1, SVt_PV);
		1395
1098	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1099		1397
		1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1100	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1400	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));	1401	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1105		1402
1106	main_mainstack = PL_mainstack;	1403	main_mainstack = PL_mainstack;
		1404	main_top_env = PL_top_env;
		1405
		1406	while (main_top_env->je_prev)
		1407	main_top_env = main_top_env->je_prev;
1107		1408
1108	coroapi.ver = CORO_API_VERSION;	1409	coroapi.ver = CORO_API_VERSION;
1109	coroapi.transfer = api_transfer;	1410	coroapi.transfer = api_transfer;
1110		1411
1111	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1412	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1118	struct coro *coro;	1419	struct coro *coro;
1119	HV *hv;	1420	HV *hv;
1120	int i;	1421	int i;
1121		1422
1122	Newz (0, coro, 1, struct coro);	1423	Newz (0, coro, 1, struct coro);
1123	coro->args = newAV ();	1424	coro->args = newAV ();
1124	coro->save = CORO_SAVE_ALL;
1125	coro->flags = CF_NEW;	1425	coro->flags = CF_NEW;
1126		1426
		1427	if (coro_first) coro_first->prev = coro;
		1428	coro->next = coro_first;
		1429	coro_first = coro;
		1430
1127	hv = newHV ();	1431	coro->hv = hv = newHV ();
1128	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1432	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));	1433	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1130		1434
1131	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1132	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1133	}	1437	}
1134	OUTPUT:	1438	OUTPUT:
1135	RETVAL	1439	RETVAL
1136		1440
1137	int	1441	# these not obviously related functions are all rolled into the same xs
1138	save (SV *coro, int new_save = -1)	1442	# function to increase chances that they all will call transfer with the same
1139	CODE:	1443	# stack offset
1140	RETVAL = api_save (coro, new_save);
1141	OUTPUT:
1142	RETVAL
1143
1144	void	1444	void
1145	_set_stacklevel (...)	1445	_set_stacklevel (...)
1146	ALIAS:	1446	ALIAS:
1147	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1148	Coro::schedule = 2	1448	Coro::schedule = 2
…		…
1161		1461
1162	case 1:	1462	case 1:
1163	if (items != 2)	1463	if (items != 2)
1164	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1464	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1165		1465
1166	prepare_transfer (&ta, ST (0), ST (1));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1167	break;	1467	break;
1168		1468
1169	case 2:	1469	case 2:
1170	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1171	break;	1471	break;
1172		1472
1173	case 3:	1473	case 3:
1174	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
1175	break;	1475	break;
1176		1476
1177	case 4:	1477	case 4:
1178	if (!prepare_cede_notself (&ta))	1478	if (!prepare_cede_notself (aTHX_ &ta))
1179	XSRETURN_EMPTY;	1479	XSRETURN_EMPTY;
1180		1480
1181	break;	1481	break;
1182	}	1482	}
1183		1483
1184	BARRIER;	1484	BARRIER;
1185	TRANSFER (ta);	1485	TRANSFER (ta);
1186	}
1187		1486
1188	void	1487	if (GIMME_V != G_VOID && ta.next != ta.prev)
1189	_clone_state_from (SV *dst, SV *src)	1488	XSRETURN_YES;
		1489	}
		1490
		1491	bool
		1492	_destroy (SV *coro_sv)
1190	CODE:	1493	CODE:
1191	{	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1192	struct coro *coro_src = SvSTATE (src);	1495	OUTPUT:
1193		1496	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		1497
1200	void	1498	void
1201	_exit (code)	1499	_exit (code)
1202	int code	1500	int code
1203	PROTOTYPE: $	1501	PROTOTYPE: $
1204	CODE:	1502	CODE:
1205	_exit (code);	1503	_exit (code);
1206		1504
1207	int	1505	int
		1506	cctx_stacksize (int new_stacksize = 0)
		1507	CODE:
		1508	RETVAL = coro_stacksize;
		1509	if (new_stacksize)
		1510	coro_stacksize = new_stacksize;
		1511	OUTPUT:
		1512	RETVAL
		1513
		1514	int
1208	cctx_count ()	1515	cctx_count ()
1209	CODE:	1516	CODE:
1210	RETVAL = cctx_count;	1517	RETVAL = cctx_count;
1211	OUTPUT:	1518	OUTPUT:
1212	RETVAL	1519	RETVAL
…		…
1216	CODE:	1523	CODE:
1217	RETVAL = cctx_idle;	1524	RETVAL = cctx_idle;
1218	OUTPUT:	1525	OUTPUT:
1219	RETVAL	1526	RETVAL
1220		1527
		1528	void
		1529	list ()
		1530	PPCODE:
		1531	{
		1532	struct coro *coro;
		1533	for (coro = coro_first; coro; coro = coro->next)
		1534	if (coro->hv)
		1535	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1536	}
		1537
		1538	void
		1539	call (Coro::State coro, SV *coderef)
		1540	ALIAS:
		1541	eval = 1
		1542	CODE:
		1543	{
		1544	if (coro->mainstack)
		1545	{
		1546	struct coro temp;
		1547	Zero (&temp, 1, struct coro);
		1548
		1549	if (!(coro->flags & CF_RUNNING))
		1550	{
		1551	save_perl (aTHX_ &temp);
		1552	load_perl (aTHX_ coro);
		1553	}
		1554
		1555	{
		1556	dSP;
		1557	ENTER;
		1558	SAVETMPS;
		1559	PUSHMARK (SP);
		1560	PUTBACK;
		1561	if (ix)
		1562	eval_sv (coderef, 0);
		1563	else
		1564	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1565	SPAGAIN;
		1566	FREETMPS;
		1567	LEAVE;
		1568	PUTBACK;
		1569	}
		1570
		1571	if (!(coro->flags & CF_RUNNING))
		1572	{
		1573	save_perl (aTHX_ coro);
		1574	load_perl (aTHX_ &temp);
		1575	}
		1576	}
		1577	}
		1578
		1579	SV *
		1580	is_ready (Coro::State coro)
		1581	PROTOTYPE: $
		1582	ALIAS:
		1583	is_ready = CF_READY
		1584	is_running = CF_RUNNING
		1585	is_new = CF_NEW
		1586	is_destroyed = CF_DESTROYED
		1587	CODE:
		1588	RETVAL = boolSV (coro->flags & ix);
		1589	OUTPUT:
		1590	RETVAL
		1591
		1592	void
		1593	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1594
		1595	SV *
		1596	has_stack (Coro::State coro)
		1597	PROTOTYPE: $
		1598	CODE:
		1599	RETVAL = boolSV (!!coro->cctx);
		1600	OUTPUT:
		1601	RETVAL
		1602
		1603	int
		1604	is_traced (Coro::State coro)
		1605	PROTOTYPE: $
		1606	CODE:
		1607	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1608	OUTPUT:
		1609	RETVAL
		1610
		1611	IV
		1612	rss (Coro::State coro)
		1613	PROTOTYPE: $
		1614	ALIAS:
		1615	usecount = 1
		1616	CODE:
		1617	switch (ix)
		1618	{
		1619	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1620	case 1: RETVAL = coro->usecount; break;
		1621	}
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625
1221	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1222		1627
1223	BOOT:	1628	BOOT:
1224	{	1629	{
1225	int i;	1630	int i;
		1631
		1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1634	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1635
		1636	coro_current = get_sv ("Coro::current", FALSE);
		1637	SvREADONLY_on (coro_current);
1226		1638
1227	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1228		1640
1229	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1230	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1235		1647
1236	coro_current = get_sv ("Coro::current", FALSE);
1237	SvREADONLY_on (coro_current);
1238
1239	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1240	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1241		1650
1242	{	1651	{
1243	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1244		1653
1245	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1246	coroapi.save = api_save;
1247	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
1248	coroapi.cede_notself = api_cede_notself;	1656	coroapi.cede_notself = api_cede_notself;
1249	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
1250	coroapi.is_ready = api_is_ready;	1658	coroapi.is_ready = api_is_ready;
1251	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
…		…
1292	CODE:	1700	CODE:
1293	RETVAL = boolSV (api_ready (self));	1701	RETVAL = boolSV (api_ready (self));
1294	OUTPUT:	1702	OUTPUT:
1295	RETVAL	1703	RETVAL
1296		1704
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	1705	int
1306	nready (...)	1706	nready (...)
1307	PROTOTYPE:	1707	PROTOTYPE:
1308	CODE:	1708	CODE:
1309	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1310	OUTPUT:	1710	OUTPUT:
1311	RETVAL	1711	RETVAL
1312		1712
		1713	# for async_pool speedup
		1714	void
		1715	_pool_1 (SV *cb)
		1716	CODE:
		1717	{
		1718	struct coro *coro = SvSTATE (coro_current);
		1719	HV *hv = (HV *)SvRV (coro_current);
		1720	AV *defav = GvAV (PL_defgv);
		1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1722	AV *invoke_av;
		1723	int i, len;
		1724
		1725	coro->defoutgv = SvREFCNT_inc (PL_defoutgv);
		1726
		1727	if (!invoke)
		1728	croak ("\3terminate\2\n");
		1729
		1730	hv_store (hv, "desc", sizeof ("desc") - 1,
		1731	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1732
		1733	invoke_av = (AV *)SvRV (invoke);
		1734	len = av_len (invoke_av);
		1735
		1736	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1737
		1738	if (len > 0)
		1739	{
		1740	av_fill (defav, len - 1);
		1741	for (i = 0; i < len; ++i)
		1742	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1743	}
		1744
		1745
		1746
		1747	SvREFCNT_dec (invoke);
		1748	}
		1749
		1750	void
		1751	_pool_2 (SV *cb)
		1752	CODE:
		1753	{
		1754	struct coro *coro = SvSTATE (coro_current);
		1755
		1756	sv_setsv (cb, &PL_sv_undef);
		1757
		1758	SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->defoutgv;
		1759
		1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1761	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1762	croak ("\3terminate\2\n");
		1763
		1764	av_clear (GvAV (PL_defgv));
		1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1767
		1768	coro->prio = 0;
		1769
		1770	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1771	api_trace (coro_current, 0);
		1772
		1773	av_push (av_async_pool, newSVsv (coro_current));
		1774	}
		1775
		1776
1313	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1314		1778
1315	SV *	1779	SV *
1316	_get_state ()	1780	_get_state ()
1317	CODE:	1781	CODE:

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