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Comparing Coro/Coro/State.xs (file contents):
Revision 1.132 by root, Fri Dec 29 13:03:05 2006 UTC vs.
Revision 1.192 by root, Fri Oct 5 21:51:40 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
…		…
70	/* 5.8.7 */	75	/* 5.8.7 */
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
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
		87
75	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
76	# undef STACKGUARD	89	# undef CORO_STACKGUARD
77	#endif	90	#endif
78		91
79	#ifndef STACKGUARD	92	#ifndef CORO_STACKGUARD
80	# define STACKGUARD 0	93	# define CORO_STACKGUARD 0
81	#endif	94	#endif
82		95
83	/* prefer perl internal functions over our own? */	96	/* prefer perl internal functions over our own? */
84	#ifndef PREFER_PERL_FUNCTIONS	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
85	# define PREFER_PERL_FUNCTIONS 0	98	# define CORO_PREFER_PERL_FUNCTIONS 0
86	#endif	99	#endif
87		100
88	/* The next macro should declare a variable stacklevel that contains and approximation	101	/* 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	102	* portable way as possible. */
90	* and should be unique. */
91	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
92	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
93		105
94	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
95		107
96	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
…		…
112	#else	124	#else
113	# define LOCK (void)0	125	# define LOCK (void)0
114	# define UNLOCK (void)0	126	# define UNLOCK (void)0
115	#endif	127	#endif
116		128
		129	/* helper storage struct for Coro::AIO */
117	struct io_state	130	struct io_state
118	{	131	{
119	int errorno;	132	int errorno;
120	I32 laststype;	133	I32 laststype;
121	int laststatval;	134	int laststatval;
122	Stat_t statcache;	135	Stat_t statcache;
123	};	136	};
124		137
		138	static size_t coro_stacksize = CORO_STACKSIZE;
125	static struct CoroAPI coroapi;	139	static struct CoroAPI coroapi;
126	static AV *main_mainstack; /* used to differentiate between $main and others */	140	static AV *main_mainstack; /* used to differentiate between $main and others */
		141	static JMPENV *main_top_env;
127	static HV *coro_state_stash, *coro_stash;	142	static HV *coro_state_stash, *coro_stash;
128	static SV *coro_mortal; /* will be freed after next transfer */	143	static SV *coro_mortal; /* will be freed after next transfer */
129		144
		145	static GV *irsgv; /* $/ */
		146	static GV *stdoutgv; /* *STDOUT */
		147
		148	/* async_pool helper stuff */
		149	static SV *sv_pool_rss;
		150	static SV *sv_pool_size;
		151	static AV *av_async_pool;
		152
130	static struct coro_cctx *cctx_first;	153	static struct coro_cctx *cctx_first;
131	static int cctx_count, cctx_idle;	154	static int cctx_count, cctx_idle;
		155
		156	enum {
		157	CC_MAPPED = 0x01,
		158	CC_NOREUSE = 0x02, /* throw this away after tracing */
		159	CC_TRACE = 0x04,
		160	CC_TRACE_SUB = 0x08, /* trace sub calls */
		161	CC_TRACE_LINE = 0x10, /* trace each statement */
		162	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		163	};
132		164
133	/* this is a structure representing a c-level coroutine */	165	/* this is a structure representing a c-level coroutine */
134	typedef struct coro_cctx {	166	typedef struct coro_cctx {
135	struct coro_cctx *next;	167	struct coro_cctx *next;
136		168
137	/* the stack */	169	/* the stack */
138	void *sptr;	170	void *sptr;
139	long ssize; /* positive == mmap, otherwise malloc */	171	size_t ssize;
140		172
141	/* cpu state */	173	/* cpu state */
142	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	174	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
143	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	175	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
144	JMPENV *top_env;	176	JMPENV *top_env;
145	coro_context cctx;	177	coro_context cctx;
146		178
147	int inuse;
148
149	#if USE_VALGRIND	179	#if CORO_USE_VALGRIND
150	int valgrind_id;	180	int valgrind_id;
151	#endif	181	#endif
		182	unsigned char flags;
152	} coro_cctx;	183	} coro_cctx;
153		184
154	enum {	185	enum {
155	CF_RUNNING = 0x0001, /* coroutine is running */	186	CF_RUNNING = 0x0001, /* coroutine is running */
156	CF_READY = 0x0002, /* coroutine is ready */	187	CF_READY = 0x0002, /* coroutine is ready */
157	CF_NEW = 0x0004, /* ahs never been switched to */	188	CF_NEW = 0x0004, /* has never been switched to */
		189	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
158	};	190	};
159		191
160	/* this is a structure representing a perl-level coroutine */	192	/* this is a structure representing a perl-level coroutine */
161	struct coro {	193	struct coro {
162	/* the c coroutine allocated to this perl coroutine, if any */	194	/* the c coroutine allocated to this perl coroutine, if any */
163	coro_cctx *cctx;	195	coro_cctx *cctx;
164		196
165	/* data associated with this coroutine (initial args) */	197	/* data associated with this coroutine (initial args) */
166	AV *args;	198	AV *args;
167	int refcnt;	199	int refcnt;
168	int save; /* CORO_SAVE flags */
169	int flags; /* CF_ flags */	200	int flags; /* CF_ flags */
170		201
171	/* optionally saved, might be zero */	202	/* optionally saved, might be zero */
172	AV *defav; /* @_ */	203	AV *defav; /* @_ */
173	SV *defsv; /* $_ */	204	SV *defsv; /* $_ */
174	SV *errsv; /* $@ */	205	SV *errsv; /* $@ */
		206	SV *deffh; /* default filehandle */
175	SV *irssv; /* $/ */	207	SV *irssv; /* $/ */
176	SV *irssv_sv; /* real $/ cache */	208	SV *irssv_sv; /* real $/ cache */
177		209
178	#define VAR(name,type) type name;	210	#define VAR(name,type) type name;
179	# include "state.h"	211	# include "state.h"
180	#undef VAR	212	#undef VAR
181		213
		214	/* statistics */
		215	int usecount; /* number of transfers to this coro */
		216
182	/* coro process data */	217	/* coro process data */
183	int prio;	218	int prio;
		219	//SV *throw;
		220
		221	/* async_pool */
		222	SV *saved_deffh;
		223
		224	/* linked list */
		225	struct coro *next, *prev;
		226	HV *hv; /* the perl hash associated with this coro, if any */
184	};	227	};
185		228
186	typedef struct coro *Coro__State;	229	typedef struct coro *Coro__State;
187	typedef struct coro *Coro__State_or_hashref;	230	typedef struct coro *Coro__State_or_hashref;
188		231
		232	/** Coro ********************************************************************/
		233
		234	#define PRIO_MAX 3
		235	#define PRIO_HIGH 1
		236	#define PRIO_NORMAL 0
		237	#define PRIO_LOW -1
		238	#define PRIO_IDLE -3
		239	#define PRIO_MIN -4
		240
		241	/* for Coro.pm */
		242	static SV *coro_current;
		243	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
		244	static int coro_nready;
		245	static struct coro *coro_first;
		246
		247	/** lowlevel stuff **********************************************************/
		248
189	static AV *	249	static AV *
190	coro_clone_padlist (CV *cv)	250	coro_clone_padlist (pTHX_ CV *cv)
191	{	251	{
192	AV *padlist = CvPADLIST (cv);	252	AV *padlist = CvPADLIST (cv);
193	AV *newpadlist, *newpad;	253	AV *newpadlist, *newpad;
194		254
195	newpadlist = newAV ();	255	newpadlist = newAV ();
…		…
207		267
208	return newpadlist;	268	return newpadlist;
209	}	269	}
210		270
211	static void	271	static void
212	free_padlist (AV *padlist)	272	free_padlist (pTHX_ AV *padlist)
213	{	273	{
214	/* may be during global destruction */	274	/* may be during global destruction */
215	if (SvREFCNT (padlist))	275	if (SvREFCNT (padlist))
216	{	276	{
217	I32 i = AvFILLp (padlist);	277	I32 i = AvFILLp (padlist);
…		…
238	AV *padlist;	298	AV *padlist;
239	AV *av = (AV *)mg->mg_obj;	299	AV *av = (AV *)mg->mg_obj;
240		300
241	/* casting is fun. */	301	/* casting is fun. */
242	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
243	free_padlist (padlist);	303	free_padlist (aTHX_ padlist);
244		304
245	SvREFCNT_dec (av);	305	SvREFCNT_dec (av);
246		306
247	return 0;	307	return 0;
248	}	308	}
…		…
256	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
257	? SvMAGIC (cv) \	317	? SvMAGIC (cv) \
258	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
259	: 0	319	: 0
260		320
		321	static struct coro *
		322	SvSTATE_ (pTHX_ SV *coro)
		323	{
		324	HV *stash;
		325	MAGIC *mg;
		326
		327	if (SvROK (coro))
		328	coro = SvRV (coro);
		329
		330	if (SvTYPE (coro) != SVt_PVHV)
		331	croak ("Coro::State object required");
		332
		333	stash = SvSTASH (coro);
		334	if (stash != coro_stash && stash != coro_state_stash)
		335	{
		336	/* very slow, but rare, check */
		337	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		338	croak ("Coro::State object required");
		339	}
		340
		341	mg = CORO_MAGIC (coro);
		342	return (struct coro *)mg->mg_ptr;
		343	}
		344
		345	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		346
261	/* the next two functions merely cache the padlists */	347	/* the next two functions merely cache the padlists */
262	static void	348	static void
263	get_padlist (CV *cv)	349	get_padlist (pTHX_ CV *cv)
264	{	350	{
265	MAGIC *mg = CORO_MAGIC (cv);	351	MAGIC *mg = CORO_MAGIC (cv);
266	AV *av;	352	AV *av;
267		353
268	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
269	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
270	else	356	else
271	{	357	{
272	#if PREFER_PERL_FUNCTIONS	358	#if CORO_PREFER_PERL_FUNCTIONS
273	/* this is probably cleaner, but also slower? */	359	/* this is probably cleaner, but also slower? */
274	CV *cp = Perl_cv_clone (cv);	360	CV *cp = Perl_cv_clone (cv);
275	CvPADLIST (cv) = CvPADLIST (cp);	361	CvPADLIST (cv) = CvPADLIST (cp);
276	CvPADLIST (cp) = 0;	362	CvPADLIST (cp) = 0;
277	SvREFCNT_dec (cp);	363	SvREFCNT_dec (cp);
278	#else	364	#else
279	CvPADLIST (cv) = coro_clone_padlist (cv);	365	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
280	#endif	366	#endif
281	}	367	}
282	}	368	}
283		369
284	static void	370	static void
285	put_padlist (CV *cv)	371	put_padlist (pTHX_ CV *cv)
286	{	372	{
287	MAGIC *mg = CORO_MAGIC (cv);	373	MAGIC *mg = CORO_MAGIC (cv);
288	AV *av;	374	AV *av;
289		375
290	if (!mg)	376	if (!mg)
…		…
301	av_extend (av, AvMAX (av) + 1);	387	av_extend (av, AvMAX (av) + 1);
302		388
303	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
304	}	390	}
305		391
306	#define SB do {	392	/** load & save, init *******************************************************/
307	#define SE } while (0)
308		393
309	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
310
311	static void	394	static void
312	load_perl (Coro__State c)	395	load_perl (pTHX_ Coro__State c)
313	{	396	{
314	#define VAR(name,type) PL_ ## name = c->name;	397	#define VAR(name,type) PL_ ## name = c->name;
315	# include "state.h"	398	# include "state.h"
316	#undef VAR	399	#undef VAR
317		400
318	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	401	GvSV (PL_defgv) = c->defsv;
319	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	402	GvAV (PL_defgv) = c->defav;
320	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	403	GvSV (PL_errgv) = c->errsv;
321	if (c->irssv)	404	GvSV (irsgv) = c->irssv_sv;
322	{
323	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
324	SvREFCNT_dec (c->irssv);
325	else
326	{
327	REPLACE_SV (PL_rs, c->irssv);
328	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
329	sv_setsv (c->irssv_sv, PL_rs);
330	}
331	}
332		405
333	{	406	{
334	dSP;	407	dSP;
335	CV *cv;	408	CV *cv;
336		409
337	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
338	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
339	{	412	{
340	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
341	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
342	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
343	}	416	}
344		417
345	PUTBACK;	418	PUTBACK;
346	}	419	}
347	}	420	}
348		421
349	static void	422	static void
350	save_perl (Coro__State c)	423	save_perl (pTHX_ Coro__State c)
351	{	424	{
352	{	425	{
353	dSP;	426	dSP;
354	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
355	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
358	/*	431	/*
359	* the worst thing you can imagine happens first - we have to save	432	* the worst thing you can imagine happens first - we have to save
360	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
361	*/	434	*/
362		435
363	EXTEND (SP, 3 + 1);
364	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
365	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
366	for (;;)	438	for (;;)
367	{	439	{
368	while (cxix >= 0)	440	while (cxix >= 0)
369	{	441	{
370	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
371		443
372	if (CxTYPE (cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
373	{	445	{
374	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
375		447
376	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
377	{	449	{
…		…
379	PUSHs ((SV *)CvPADLIST (cv));	451	PUSHs ((SV *)CvPADLIST (cv));
380	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
381	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
382		454
383	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
384	get_padlist (cv);	456	get_padlist (aTHX_ cv);
385	}	457	}
386	}	458	}
387	}	459	}
388		460
389	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
390	break;	462	break;
391		463
392	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
393	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
394	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
395	}	467	}
396		468
397	PUTBACK;	469	PUTBACK;
398	}	470	}
399		471
400	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = GvAV (PL_defgv);
401	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = DEFSV;
402	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = ERRSV;
403	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	475	c->irssv_sv = GvSV (irsgv);
404		476
405	#define VAR(name,type)c->name = PL_ ## name;	477	#define VAR(name,type)c->name = PL_ ## name;
406	# include "state.h"	478	# include "state.h"
407	#undef VAR	479	#undef VAR
408	}	480	}
…		…
411	* allocate various perl stacks. This is an exact copy	483	* allocate various perl stacks. This is an exact copy
412	* of perl.c:init_stacks, except that it uses less memory	484	* of perl.c:init_stacks, except that it uses less memory
413	* on the (sometimes correct) assumption that coroutines do	485	* on the (sometimes correct) assumption that coroutines do
414	* not usually need a lot of stackspace.	486	* not usually need a lot of stackspace.
415	*/	487	*/
416	#if PREFER_PERL_FUNCTIONS	488	#if CORO_PREFER_PERL_FUNCTIONS
417	# define coro_init_stacks init_stacks	489	# define coro_init_stacks init_stacks
418	#else	490	#else
419	static void	491	static void
420	coro_init_stacks ()	492	coro_init_stacks (pTHX)
421	{	493	{
422	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	494	PL_curstackinfo = new_stackinfo(64, 6);
423	PL_curstackinfo->si_type = PERLSI_MAIN;	495	PL_curstackinfo->si_type = PERLSI_MAIN;
424	PL_curstack = PL_curstackinfo->si_stack;	496	PL_curstack = PL_curstackinfo->si_stack;
425	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
426		498
427	PL_stack_base = AvARRAY(PL_curstack);	499	PL_stack_base = AvARRAY(PL_curstack);
428	PL_stack_sp = PL_stack_base;	500	PL_stack_sp = PL_stack_base;
429	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
430		502
431	New(50,PL_tmps_stack,128,SV*);	503	New(50,PL_tmps_stack,64,SV*);
432	PL_tmps_floor = -1;	504	PL_tmps_floor = -1;
433	PL_tmps_ix = -1;	505	PL_tmps_ix = -1;
434	PL_tmps_max = 128;	506	PL_tmps_max = 64;
435		507
436	New(54,PL_markstack,32,I32);	508	New(54,PL_markstack,16,I32);
437	PL_markstack_ptr = PL_markstack;	509	PL_markstack_ptr = PL_markstack;
438	PL_markstack_max = PL_markstack + 32;	510	PL_markstack_max = PL_markstack + 16;
439		511
440	#ifdef SET_MARK_OFFSET	512	#ifdef SET_MARK_OFFSET
441	SET_MARK_OFFSET;	513	SET_MARK_OFFSET;
442	#endif	514	#endif
443		515
444	New(54,PL_scopestack,32,I32);	516	New(54,PL_scopestack,16,I32);
445	PL_scopestack_ix = 0;	517	PL_scopestack_ix = 0;
446	PL_scopestack_max = 32;	518	PL_scopestack_max = 16;
447		519
448	New(54,PL_savestack,64,ANY);	520	New(54,PL_savestack,64,ANY);
449	PL_savestack_ix = 0;	521	PL_savestack_ix = 0;
450	PL_savestack_max = 64;	522	PL_savestack_max = 64;
451		523
452	#if !PERL_VERSION_ATLEAST (5,9,0)	524	#if !PERL_VERSION_ATLEAST (5,9,0)
453	New(54,PL_retstack,16,OP*);	525	New(54,PL_retstack,4,OP*);
454	PL_retstack_ix = 0;	526	PL_retstack_ix = 0;
455	PL_retstack_max = 16;	527	PL_retstack_max = 4;
456	#endif	528	#endif
457	}	529	}
458	#endif	530	#endif
459		531
460	/*	532	/*
461	* destroy the stacks, the callchain etc...	533	* destroy the stacks, the callchain etc...
462	*/	534	*/
463	static void	535	static void
464	coro_destroy_stacks ()	536	coro_destroy_stacks (pTHX)
465	{	537	{
466	if (!IN_DESTRUCT)
467	{
468	/* restore all saved variables and stuff */
469	LEAVE_SCOPE (0);
470	assert (PL_tmps_floor == -1);
471
472	/* free all temporaries */
473	FREETMPS;
474	assert (PL_tmps_ix == -1);
475
476	POPSTACK_TO (PL_mainstack);
477	}
478
479	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
480	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
481		540
482	while (PL_curstackinfo)	541	while (PL_curstackinfo)
483	{	542	{
…		…
498	#if !PERL_VERSION_ATLEAST (5,9,0)	557	#if !PERL_VERSION_ATLEAST (5,9,0)
499	Safefree (PL_retstack);	558	Safefree (PL_retstack);
500	#endif	559	#endif
501	}	560	}
502		561
503	static void	562	static size_t
504	setup_coro (struct coro *coro)	563	coro_rss (pTHX_ struct coro *coro)
		564	{
		565	size_t rss = sizeof (*coro);
		566
		567	if (coro->mainstack)
		568	{
		569	if (coro->flags & CF_RUNNING)
		570	{
		571	#define VAR(name,type)coro->name = PL_ ## name;
		572	# include "state.h"
		573	#undef VAR
		574	}
		575
		576	rss += sizeof (coro->curstackinfo);
		577	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		578	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		579	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		580	rss += coro->tmps_max * sizeof (SV *);
		581	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		582	rss += coro->scopestack_max * sizeof (I32);
		583	rss += coro->savestack_max * sizeof (ANY);
		584
		585	#if !PERL_VERSION_ATLEAST (5,9,0)
		586	rss += coro->retstack_max * sizeof (OP *);
		587	#endif
		588	}
		589
		590	return rss;
		591	}
		592
		593	/** coroutine stack handling ************************************************/
		594
		595	static void
		596	coro_setup (pTHX_ struct coro *coro)
505	{	597	{
506	/*	598	/*
507	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
508	*/	600	*/
509
510	coro_init_stacks ();	601	coro_init_stacks (aTHX);
511		602
		603	PL_runops = RUNOPS_DEFAULT;
512	PL_curcop = &PL_compiling;	604	PL_curcop = &PL_compiling;
513	PL_in_eval = EVAL_NULL;	605	PL_in_eval = EVAL_NULL;
		606	PL_comppad = 0;
514	PL_curpm = 0;	607	PL_curpm = 0;
515	PL_localizing = 0;	608	PL_localizing = 0;
516	PL_dirty = 0;	609	PL_dirty = 0;
517	PL_restartop = 0;	610	PL_restartop = 0;
		611
		612	GvSV (PL_defgv) = newSV (0);
		613	GvAV (PL_defgv) = coro->args; coro->args = 0;
		614	GvSV (PL_errgv) = newSV (0);
		615	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		616	PL_rs = newSVsv (GvSV (irsgv));
		617	PL_defoutgv = SvREFCNT_inc (stdoutgv);
		618
		619	ENTER; /* necessary e.g. for dounwind */
518		620
519	{	621	{
520	dSP;	622	dSP;
521	LOGOP myop;	623	LOGOP myop;
522		624
523	SvREFCNT_dec (GvAV (PL_defgv));
524	GvAV (PL_defgv) = coro->args; coro->args = 0;
525
526	Zero (&myop, 1, LOGOP);	625	Zero (&myop, 1, LOGOP);
527	myop.op_next = Nullop;	626	myop.op_next = Nullop;
528	myop.op_flags = OPf_WANT_VOID;	627	myop.op_flags = OPf_WANT_VOID;
529		628
530	PUSHMARK (SP);	629	PUSHMARK (SP);
531	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	630	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
532	PUTBACK;	631	PUTBACK;
533	PL_op = (OP *)&myop;	632	PL_op = (OP *)&myop;
534	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	633	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
535	SPAGAIN;	634	SPAGAIN;
536	}	635	}
537
538	ENTER; /* necessary e.g. for dounwind */
539	}	636	}
540		637
541	static void	638	static void
		639	coro_destroy (pTHX_ struct coro *coro)
		640	{
		641	if (!IN_DESTRUCT)
		642	{
		643	/* restore all saved variables and stuff */
		644	LEAVE_SCOPE (0);
		645	assert (PL_tmps_floor == -1);
		646
		647	/* free all temporaries */
		648	FREETMPS;
		649	assert (PL_tmps_ix == -1);
		650
		651	/* unwind all extra stacks */
		652	POPSTACK_TO (PL_mainstack);
		653
		654	/* unwind main stack */
		655	dounwind (-1);
		656	}
		657
		658	SvREFCNT_dec (GvSV (PL_defgv));
		659	SvREFCNT_dec (GvAV (PL_defgv));
		660	SvREFCNT_dec (GvSV (PL_errgv));
		661	SvREFCNT_dec (PL_defoutgv);
		662	SvREFCNT_dec (PL_rs);
		663	SvREFCNT_dec (GvSV (irsgv));
		664
		665	SvREFCNT_dec (coro->saved_deffh);
		666	//SvREFCNT_dec (coro->throw);
		667
		668	coro_destroy_stacks (aTHX);
		669	}
		670
		671	static void
542	free_coro_mortal ()	672	free_coro_mortal (pTHX)
543	{	673	{
544	if (coro_mortal)	674	if (coro_mortal)
545	{	675	{
546	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
547	coro_mortal = 0;	677	coro_mortal = 0;
548	}	678	}
549	}	679	}
550		680
		681	static int
		682	runops_trace (pTHX)
		683	{
		684	COP *oldcop = 0;
		685	int oldcxix = -2;
		686	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		687	coro_cctx *cctx = coro->cctx;
		688
		689	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		690	{
		691	PERL_ASYNC_CHECK ();
		692
		693	if (cctx->flags & CC_TRACE_ALL)
		694	{
		695	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		696	{
		697	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		698	SV **bot, **top;
		699	AV *av = newAV (); /* return values */
		700	SV **cb;
		701	dSP;
		702
		703	GV *gv = CvGV (cx->blk_sub.cv);
		704	SV *fullname = sv_2mortal (newSV (0));
		705	if (isGV (gv))
		706	gv_efullname3 (fullname, gv, 0);
		707
		708	bot = PL_stack_base + cx->blk_oldsp + 1;
		709	top = cx->blk_gimme == G_ARRAY ? SP + 1
		710	: cx->blk_gimme == G_SCALAR ? bot + 1
		711	: bot;
		712
		713	while (bot < top)
		714	av_push (av, SvREFCNT_inc (*bot++));
		715
		716	PL_runops = RUNOPS_DEFAULT;
		717	ENTER;
		718	SAVETMPS;
		719	EXTEND (SP, 3);
		720	PUSHMARK (SP);
		721	PUSHs (&PL_sv_no);
		722	PUSHs (fullname);
		723	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		724	PUTBACK;
		725	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		726	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		727	SPAGAIN;
		728	FREETMPS;
		729	LEAVE;
		730	PL_runops = runops_trace;
		731	}
		732
		733	if (oldcop != PL_curcop)
		734	{
		735	oldcop = PL_curcop;
		736
		737	if (PL_curcop != &PL_compiling)
		738	{
		739	SV **cb;
		740
		741	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		742	{
		743	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		744
		745	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		746	{
		747	runops_proc_t old_runops = PL_runops;
		748	dSP;
		749	GV *gv = CvGV (cx->blk_sub.cv);
		750	SV *fullname = sv_2mortal (newSV (0));
		751
		752	if (isGV (gv))
		753	gv_efullname3 (fullname, gv, 0);
		754
		755	PL_runops = RUNOPS_DEFAULT;
		756	ENTER;
		757	SAVETMPS;
		758	EXTEND (SP, 3);
		759	PUSHMARK (SP);
		760	PUSHs (&PL_sv_yes);
		761	PUSHs (fullname);
		762	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		763	PUTBACK;
		764	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		765	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		766	SPAGAIN;
		767	FREETMPS;
		768	LEAVE;
		769	PL_runops = runops_trace;
		770	}
		771
		772	oldcxix = cxstack_ix;
		773	}
		774
		775	if (cctx->flags & CC_TRACE_LINE)
		776	{
		777	dSP;
		778
		779	PL_runops = RUNOPS_DEFAULT;
		780	ENTER;
		781	SAVETMPS;
		782	EXTEND (SP, 3);
		783	PL_runops = RUNOPS_DEFAULT;
		784	PUSHMARK (SP);
		785	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		786	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		787	PUTBACK;
		788	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		789	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		790	SPAGAIN;
		791	FREETMPS;
		792	LEAVE;
		793	PL_runops = runops_trace;
		794	}
		795	}
		796	}
		797	}
		798	}
		799
		800	TAINT_NOT;
		801	return 0;
		802	}
		803
551	/* inject a fake call to Coro::State::_cctx_init into the execution */	804	/* inject a fake call to Coro::State::_cctx_init into the execution */
		805	/* _cctx_init should be careful, as it could be called at almost any time */
		806	/* during execution of a perl program */
552	static void NOINLINE	807	static void NOINLINE
553	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
554	{	809	{
555	dSP;	810	dSP;
556	LOGOP myop;	811	LOGOP myop;
		812
		813	PL_top_env = &PL_start_env;
		814
		815	if (cctx->flags & CC_TRACE)
		816	PL_runops = runops_trace;
557		817
558	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
559	myop.op_next = PL_op;	819	myop.op_next = PL_op;
560	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	820	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
561		821
…		…
567	PL_op = (OP *)&myop;	827	PL_op = (OP *)&myop;
568	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
569	SPAGAIN;	829	SPAGAIN;
570	}	830	}
571		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
572	static void	835	static void
573	coro_run (void *arg)	836	coro_run (void *arg)
574	{	837	{
		838	dTHX;
		839
575	/* coro_run is the alternative tail of transfer(), so unlock here. */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
576	UNLOCK;	841	UNLOCK;
577		842
578	/*	843	/* we now skip the entersub that lead to transfer() */
579	* this is a _very_ stripped down perl interpreter ;)	844	PL_op = PL_op->op_next;
580	*/
581	PL_top_env = &PL_start_env;
582		845
583	/* inject call to cctx_init */	846	/* inject a fake subroutine call to cctx_init */
584	prepare_cctx ((coro_cctx *)arg);	847	prepare_cctx (aTHX_ (coro_cctx *)arg);
585		848
586	/* somebody will hit me for both perl_run and PL_restartop */	849	/* somebody or something will hit me for both perl_run and PL_restartop */
587	PL_restartop = PL_op;	850	PL_restartop = PL_op;
588	perl_run (PL_curinterp);	851	perl_run (PL_curinterp);
589		852
590	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	853	/*
591	abort ();	854	* If perl-run returns we assume exit() was being called or the coro
		855	* fell off the end, which seems to be the only valid (non-bug)
		856	* reason for perl_run to return. We try to exit by jumping to the
		857	* bootstrap-time "top" top_env, as we cannot restore the "main"
		858	* coroutine as Coro has no such concept
		859	*/
		860	PL_top_env = main_top_env;
		861	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
592	}	862	}
593		863
594	static coro_cctx *	864	static coro_cctx *
595	cctx_new ()	865	cctx_new ()
596	{	866	{
597	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
598		870
599	++cctx_count;	871	++cctx_count;
600		872
601	Newz (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
602		874
603	#if HAVE_MMAP	875	#if HAVE_MMAP
604		876
605	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
606	/* mmap supposedly does allocate-on-write for us */	878	/* mmap supposedly does allocate-on-write for us */
607	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	879	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
608		880
609	if (cctx->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
610	{
611	perror ("FATAL: unable to mmap stack for coroutine");
612	_exit (EXIT_FAILURE);
613	}	882	{
614
615	# if STACKGUARD	883	# if CORO_STACKGUARD
616	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
617	# endif	885	# endif
		886	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
		887	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
		888	cctx->flags |= CC_MAPPED;
		889	}
		890	else
		891	#endif
		892	{
		893	cctx->ssize = coro_stacksize * (long)sizeof (long);
		894	New (0, cctx->sptr, coro_stacksize, long);
618		895
619	#else
620
621	cctx->ssize = STACKSIZE * (long)sizeof (long);
622	New (0, cctx->sptr, STACKSIZE, long);
623
624	if (!cctx->sptr)	896	if (!cctx->sptr)
625	{	897	{
626	perror ("FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
627	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
628	}	900	}
629		901
630	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
631		905
632	#if USE_VALGRIND	906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
633	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
634	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
635	cctx->ssize + (char *)cctx->sptr
636	);
637	#endif
638
639	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);	907	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
640		908
641	return cctx;	909	return cctx;
642	}	910	}
643		911
644	static void	912	static void
…		…
647	if (!cctx)	915	if (!cctx)
648	return;	916	return;
649		917
650	--cctx_count;	918	--cctx_count;
651		919
652	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
653	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
654	#endif	922	#endif
655		923
656	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
657	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
658	#else	927	else
		928	#endif
659	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
660	#endif
661		930
662	Safefree (cctx);	931	Safefree (cctx);
663	}	932	}
664		933
665	static coro_cctx *	934	static coro_cctx *
666	cctx_get ()	935	cctx_get (pTHX)
667	{	936	{
668	coro_cctx *cctx;
669
670	if (cctx_first)	937	while (cctx_first)
671	{	938	{
672	cctx = cctx_first;	939	coro_cctx *cctx = cctx_first;
673	cctx_first = cctx->next;	940	cctx_first = cctx->next;
674	--cctx_idle;	941	--cctx_idle;
675	}	942
676	else	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
677	{	944	return cctx;
678	cctx = cctx_new ();	945
679	PL_op = PL_op->op_next;	946	cctx_destroy (cctx);
680	}	947	}
681		948
682	return cctx;	949	return cctx_new ();
683	}	950	}
684		951
685	static void	952	static void
686	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
687	{	954	{
…		…
690	{	957	{
691	coro_cctx *first = cctx_first;	958	coro_cctx *first = cctx_first;
692	cctx_first = first->next;	959	cctx_first = first->next;
693	--cctx_idle;	960	--cctx_idle;
694		961
695	assert (!first->inuse);
696	cctx_destroy (first);	962	cctx_destroy (first);
697	}	963	}
698		964
699	++cctx_idle;	965	++cctx_idle;
700	cctx->next = cctx_first;	966	cctx->next = cctx_first;
701	cctx_first = cctx;	967	cctx_first = cctx;
702	}	968	}
703		969
704	/* never call directly, always through the coro_state_transfer global variable */	970	/** coroutine switching *****************************************************/
		971
705	static void NOINLINE	972	static void NOINLINE
		973	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		974	{
		975	if (prev != next)
		976	{
		977	if (!(prev->flags & (CF_RUNNING | CF_NEW)))
		978	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		979
		980	if (next->flags & CF_RUNNING)
		981	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		982
		983	if (next->flags & CF_DESTROYED)
		984	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		985
		986	if (PL_lex_state != LEX_NOTPARSING)
		987	croak ("Coro::State::transfer called while parsing, but this is not supported");
		988	}
		989	}
		990
		991	/* always use the TRANSFER macro */
		992	static void NOINLINE
706	transfer (struct coro *prev, struct coro *next)	993	transfer (pTHX_ struct coro *prev, struct coro *next)
707	{	994	{
708	dSTACKLEVEL;	995	dSTACKLEVEL;
709		996
710	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
711	if (!next)	998	if (!next)
…		…
719		1006
720	if (prev->flags & CF_NEW)	1007	if (prev->flags & CF_NEW)
721	{	1008	{
722	/* create a new empty context */	1009	/* create a new empty context */
723	Newz (0, prev->cctx, 1, coro_cctx);	1010	Newz (0, prev->cctx, 1, coro_cctx);
724	prev->cctx->inuse = 1;
725	prev->flags &= ~CF_NEW;	1011	prev->flags &= ~CF_NEW;
726	prev->flags |= CF_RUNNING;	1012	prev->flags |= CF_RUNNING;
727	}	1013	}
728
729	/*TODO: must not croak here */
730	if (!prev->flags & CF_RUNNING)
731	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
732
733	if (next->flags & CF_RUNNING)
734	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
735		1014
736	prev->flags &= ~CF_RUNNING;	1015	prev->flags &= ~CF_RUNNING;
737	next->flags |= CF_RUNNING;	1016	next->flags |= CF_RUNNING;
738		1017
739	LOCK;	1018	LOCK;
…		…
741	if (next->flags & CF_NEW)	1020	if (next->flags & CF_NEW)
742	{	1021	{
743	/* need to start coroutine */	1022	/* need to start coroutine */
744	next->flags &= ~CF_NEW;	1023	next->flags &= ~CF_NEW;
745	/* first get rid of the old state */	1024	/* first get rid of the old state */
746	save_perl (prev);	1025	save_perl (aTHX_ prev);
747	/* setup coroutine call */	1026	/* setup coroutine call */
748	setup_coro (next);	1027	coro_setup (aTHX_ next);
749	/* need a new stack */
750	assert (!next->cctx);
751	}	1028	}
752	else	1029	else
753	{	1030	{
754	/* coroutine already started */	1031	/* coroutine already started */
755	save_perl (prev);	1032	save_perl (aTHX_ prev);
756	load_perl (next);	1033	load_perl (aTHX_ next);
757	}	1034	}
758		1035
759	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
760		1037
761	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
762	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
763	{	1040	{
764	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1041	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
765	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1042	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
766		1043
767	prev->cctx = 0;	1044	prev->cctx = 0;
768		1045
769	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
770	prev__cctx->inuse = 0;
771	}	1047	}
772		1048
		1049	++next->usecount;
		1050
773	if (!next->cctx)	1051	if (!next->cctx)
774	{
775	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
776	assert (!next->cctx->inuse);
777	next->cctx->inuse = 1;
778	}
779		1053
780	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
781	{	1055	{
782	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
783	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
784	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
785	}	1059	}
786		1060
787	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
788
789	UNLOCK;	1062	UNLOCK;
790	}	1063	}
791	}	1064	}
792		1065
793	struct transfer_args	1066	struct transfer_args
794	{	1067	{
795	struct coro *prev, *next;	1068	struct coro *prev, *next;
796	};	1069	};
797		1070
798	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1071	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1072	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
799		1073
		1074	/** high level stuff ********************************************************/
		1075
800	static void	1076	static int
801	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
802	{	1078	{
803	if (coro->refcnt--)	1079	if (coro->flags & CF_DESTROYED)
804	return;	1080	return 0;
		1081
		1082	coro->flags |= CF_DESTROYED;
		1083
		1084	if (coro->flags & CF_READY)
		1085	{
		1086	/* reduce nready, as destroying a ready coro effectively unreadies it */
		1087	/* alternative: look through all ready queues and remove the coro */
		1088	LOCK;
		1089	--coro_nready;
		1090	UNLOCK;
		1091	}
		1092	else
		1093	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
805		1094
806	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
807	{	1096	{
808	struct coro temp;	1097	struct coro temp;
809	Zero (&temp, 1, struct coro);
810	temp.save = CORO_SAVE_ALL;
811		1098
812	if (coro->flags & CF_RUNNING)	1099	if (coro->flags & CF_RUNNING)
813	croak ("FATAL: tried to destroy currently running coroutine");	1100	croak ("FATAL: tried to destroy currently running coroutine");
814		1101
815	save_perl (&temp);	1102	save_perl (aTHX_ &temp);
816	load_perl (coro);	1103	load_perl (aTHX_ coro);
817		1104
818	coro_destroy_stacks ();	1105	coro_destroy (aTHX_ coro);
819		1106
820	load_perl (&temp); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
821		1108
822	coro->mainstack = 0;	1109	coro->mainstack = 0;
823	}	1110	}
824		1111
825	cctx_destroy (coro->cctx);	1112	cctx_destroy (coro->cctx);
826	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
827	Safefree (coro);	1114
		1115	if (coro->next) coro->next->prev = coro->prev;
		1116	if (coro->prev) coro->prev->next = coro->next;
		1117	if (coro == coro_first) coro_first = coro->next;
		1118
		1119	return 1;
828	}	1120	}
829		1121
830	static int	1122	static int
831	coro_state_clear (pTHX_ SV *sv, MAGIC *mg)	1123	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
832	{	1124	{
833	struct coro *coro = (struct coro *)mg->mg_ptr;	1125	struct coro *coro = (struct coro *)mg->mg_ptr;
834	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
835		1127
		1128	coro->hv = 0;
		1129
		1130	if (--coro->refcnt < 0)
		1131	{
836	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
		1133	Safefree (coro);
		1134	}
837		1135
838	return 0;	1136	return 0;
839	}	1137	}
840		1138
841	static int	1139	static int
…		…
848	return 0;	1146	return 0;
849	}	1147	}
850		1148
851	static MGVTBL coro_state_vtbl = {	1149	static MGVTBL coro_state_vtbl = {
852	0, 0, 0, 0,	1150	0, 0, 0, 0,
853	coro_state_clear,	1151	coro_state_free,
854	0,	1152	0,
855	#ifdef MGf_DUP	1153	#ifdef MGf_DUP
856	coro_state_dup,	1154	coro_state_dup,
857	#else	1155	#else
858	# define MGf_DUP 0	1156	# define MGf_DUP 0
859	#endif	1157	#endif
860	};	1158	};
861		1159
862	static struct coro *
863	SvSTATE (SV *coro)
864	{
865	HV *stash;
866	MAGIC *mg;
867
868	if (SvROK (coro))
869	coro = SvRV (coro);
870
871	stash = SvSTASH (coro);
872	if (stash != coro_stash && stash != coro_state_stash)
873	{
874	/* very slow, but rare, check */
875	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
876	croak ("Coro::State object required");
877	}
878
879	mg = SvMAGIC (coro);
880	assert (mg->mg_type == PERL_MAGIC_ext);
881	return (struct coro *)mg->mg_ptr;
882	}
883
884	static void	1160	static void
885	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1161	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
886	{	1162	{
887	ta->prev = SvSTATE (prev_sv);	1163	ta->prev = SvSTATE (prev_sv);
888	ta->next = SvSTATE (next_sv);	1164	ta->next = SvSTATE (next_sv);
		1165	TRANSFER_CHECK (*ta);
889	}	1166	}
890		1167
891	static void	1168	static void
892	api_transfer (SV *prev_sv, SV *next_sv)	1169	api_transfer (SV *prev_sv, SV *next_sv)
893	{	1170	{
		1171	dTHX;
894	struct transfer_args ta;	1172	struct transfer_args ta;
895		1173
896	prepare_transfer (&ta, prev_sv, next_sv);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
897	TRANSFER (ta);	1175	TRANSFER (ta);
898	}	1176	}
899		1177
900	static int
901	api_save (SV *coro_sv, int new_save)
902	{
903	struct coro *coro = SvSTATE (coro_sv);
904	int old_save = coro->save;
905
906	if (new_save >= 0)
907	coro->save = new_save;
908
909	return old_save;
910	}
911
912	/** Coro ********************************************************************/	1178	/** Coro ********************************************************************/
913		1179
914	#define PRIO_MAX 3
915	#define PRIO_HIGH 1
916	#define PRIO_NORMAL 0
917	#define PRIO_LOW -1
918	#define PRIO_IDLE -3
919	#define PRIO_MIN -4
920
921	/* for Coro.pm */
922	static SV *coro_current;
923	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
924	static int coro_nready;
925
926	static void	1180	static void
927	coro_enq (SV *coro_sv)	1181	coro_enq (pTHX_ SV *coro_sv)
928	{	1182	{
929	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1183	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
930	coro_nready++;
931	}	1184	}
932		1185
933	static SV *	1186	static SV *
934	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
935	{	1188	{
936	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
937		1190
938	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
939	if (min_prio < 0)	1192	if (min_prio < 0)
940	min_prio = 0;	1193	min_prio = 0;
941		1194
942	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
943	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
944	{
945	coro_nready--;
946	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
947	}
948		1198
949	return 0;	1199	return 0;
950	}	1200	}
951		1201
952	static int	1202	static int
953	api_ready (SV *coro_sv)	1203	api_ready (SV *coro_sv)
954	{	1204	{
		1205	dTHX;
955	struct coro *coro;	1206	struct coro *coro;
956		1207
957	if (SvROK (coro_sv))	1208	if (SvROK (coro_sv))
958	coro_sv = SvRV (coro_sv);	1209	coro_sv = SvRV (coro_sv);
959		1210
…		…
963	return 0;	1214	return 0;
964		1215
965	coro->flags |= CF_READY;	1216	coro->flags |= CF_READY;
966		1217
967	LOCK;	1218	LOCK;
968	coro_enq (SvREFCNT_inc (coro_sv));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
969	UNLOCK;	1221	UNLOCK;
970		1222
971	return 1;	1223	return 1;
972	}	1224	}
973		1225
974	static int	1226	static int
975	api_is_ready (SV *coro_sv)	1227	api_is_ready (SV *coro_sv)
976	{	1228	{
		1229	dTHX;
977	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
978	}	1231	}
979		1232
980	static void	1233	static void
981	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
982	{	1235	{
983	SV *prev, *next;	1236	SV *prev_sv, *next_sv;
984		1237
985	for (;;)	1238	for (;;)
986	{	1239	{
987	LOCK;	1240	LOCK;
988	next = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
		1242
		1243	/* nothing to schedule: call the idle handler */
		1244	if (!next_sv)
		1245	{
		1246	dSP;
		1247	UNLOCK;
		1248
		1249	ENTER;
		1250	SAVETMPS;
		1251
		1252	PUSHMARK (SP);
		1253	PUTBACK;
		1254	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1255
		1256	FREETMPS;
		1257	LEAVE;
		1258	continue;
		1259	}
		1260
		1261	ta->next = SvSTATE (next_sv);
		1262
		1263	/* cannot transfer to destroyed coros, skip and look for next */
		1264	if (ta->next->flags & CF_DESTROYED)
		1265	{
		1266	UNLOCK;
		1267	SvREFCNT_dec (next_sv);
		1268	/* coro_nready is already taken care of by destroy */
		1269	continue;
		1270	}
		1271
		1272	--coro_nready;
989	UNLOCK;	1273	UNLOCK;
990
991	if (next)
992	break;	1274	break;
993
994	{
995	dSP;
996
997	ENTER;
998	SAVETMPS;
999
1000	PUSHMARK (SP);
1001	PUTBACK;
1002	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
1003
1004	FREETMPS;
1005	LEAVE;
1006	}	1275	}
1007	}
1008
1009	prev = SvRV (coro_current);
1010	SvRV_set (coro_current, next);
1011		1276
1012	/* free this only after the transfer */	1277	/* free this only after the transfer */
1013	LOCK;	1278	prev_sv = SvRV (coro_current);
1014	free_coro_mortal ();
1015	UNLOCK;
1016	coro_mortal = prev;
1017
1018	assert (!SvROK(prev));//D
1019	assert (!SvROK(next));//D
1020
1021	ta->prev = SvSTATE (prev);	1279	ta->prev = SvSTATE (prev_sv);
1022	ta->next = SvSTATE (next);	1280	TRANSFER_CHECK (*ta);
1023
1024	assert (ta->next->flags & CF_READY);	1281	assert (ta->next->flags & CF_READY);
1025	ta->next->flags &= ~CF_READY;	1282	ta->next->flags &= ~CF_READY;
1026	}	1283	SvRV_set (coro_current, next_sv);
1027		1284
		1285	LOCK;
		1286	free_coro_mortal (aTHX);
		1287	coro_mortal = prev_sv;
		1288	UNLOCK;
		1289	}
		1290
1028	static void	1291	static void
1029	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
1030	{	1293	{
1031	api_ready (coro_current);	1294	api_ready (coro_current);
1032	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
1033	}	1296	}
1034		1297
1035	static int	1298	static int
1036	prepare_cede_notself (struct transfer_args *ta)	1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1037	{	1300	{
1038	if (coro_nready)	1301	if (coro_nready)
1039	{	1302	{
1040	SV *prev = SvRV (coro_current);	1303	SV *prev = SvRV (coro_current);
1041	prepare_schedule (ta);	1304	prepare_schedule (aTHX_ ta);
1042	api_ready (prev);	1305	api_ready (prev);
1043	return 1;	1306	return 1;
1044	}	1307	}
1045	else	1308	else
1046	return 0;	1309	return 0;
1047	}	1310	}
1048		1311
1049	static void	1312	static void
1050	api_schedule (void)	1313	api_schedule (void)
1051	{	1314	{
		1315	dTHX;
1052	struct transfer_args ta;	1316	struct transfer_args ta;
1053		1317
1054	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
1055	TRANSFER (ta);	1319	TRANSFER (ta);
1056	}	1320	}
1057		1321
1058	static int	1322	static int
1059	api_cede (void)	1323	api_cede (void)
1060	{	1324	{
		1325	dTHX;
1061	struct transfer_args ta;	1326	struct transfer_args ta;
1062		1327
1063	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
1064		1329
1065	if (ta.prev != ta.next)	1330	if (ta.prev != ta.next)
1066	{	1331	{
1067	TRANSFER (ta);	1332	TRANSFER (ta);
1068	return 1;	1333	return 1;
…		…
1072	}	1337	}
1073		1338
1074	static int	1339	static int
1075	api_cede_notself (void)	1340	api_cede_notself (void)
1076	{	1341	{
		1342	dTHX;
1077	struct transfer_args ta;	1343	struct transfer_args ta;
1078		1344
1079	if (prepare_cede_notself (&ta))	1345	if (prepare_cede_notself (aTHX_ &ta))
1080	{	1346	{
1081	TRANSFER (ta);	1347	TRANSFER (ta);
1082	return 1;	1348	return 1;
1083	}	1349	}
1084	else	1350	else
1085	return 0;	1351	return 0;
1086	}	1352	}
1087		1353
		1354	static void
		1355	api_trace (SV *coro_sv, int flags)
		1356	{
		1357	dTHX;
		1358	struct coro *coro = SvSTATE (coro_sv);
		1359
		1360	if (flags & CC_TRACE)
		1361	{
		1362	if (!coro->cctx)
		1363	coro->cctx = cctx_new ();
		1364	else if (!(coro->cctx->flags & CC_TRACE))
		1365	croak ("cannot enable tracing on coroutine with custom stack");
		1366
		1367	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1368	}
		1369	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1370	{
		1371	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1372
		1373	if (coro->flags & CF_RUNNING)
		1374	PL_runops = RUNOPS_DEFAULT;
		1375	else
		1376	coro->runops = RUNOPS_DEFAULT;
		1377	}
		1378	}
		1379
1088	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1089		1381
1090	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1091		1383
1092	BOOT:	1384	BOOT:
1093	{	1385	{
1094	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1095	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1096	#endif	1388	#endif
1097	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1098		1390
		1391	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1393
1099	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1100		1395
		1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1101	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1102	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1103	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1104	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1105	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1399	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1106		1400
1107	main_mainstack = PL_mainstack;	1401	main_mainstack = PL_mainstack;
		1402	main_top_env = PL_top_env;
		1403
		1404	while (main_top_env->je_prev)
		1405	main_top_env = main_top_env->je_prev;
1108		1406
1109	coroapi.ver = CORO_API_VERSION;	1407	coroapi.ver = CORO_API_VERSION;
1110	coroapi.transfer = api_transfer;	1408	coroapi.transfer = api_transfer;
1111		1409
1112	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1119	struct coro *coro;	1417	struct coro *coro;
1120	HV *hv;	1418	HV *hv;
1121	int i;	1419	int i;
1122		1420
1123	Newz (0, coro, 1, struct coro);	1421	Newz (0, coro, 1, struct coro);
1124	coro->args = newAV ();	1422	coro->args = newAV ();
1125	coro->save = CORO_SAVE_ALL;
1126	coro->flags = CF_NEW;	1423	coro->flags = CF_NEW;
1127		1424
		1425	if (coro_first) coro_first->prev = coro;
		1426	coro->next = coro_first;
		1427	coro_first = coro;
		1428
1128	hv = newHV ();	1429	coro->hv = hv = newHV ();
1129	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1430	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1130	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1131		1432
		1433	av_extend (coro->args, items - 1);
		1434
1132	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1133	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1134	}	1437	}
1135	OUTPUT:	1438	OUTPUT:
1136	RETVAL	1439	RETVAL
1137		1440
1138	int	1441	# these not obviously related functions are all rolled into the same xs
1139	save (SV *coro, int new_save = -1)	1442	# function to increase chances that they all will call transfer with the same
1140	CODE:	1443	# stack offset
1141	RETVAL = api_save (coro, new_save);
1142	OUTPUT:
1143	RETVAL
1144
1145	void	1444	void
1146	_set_stacklevel (...)	1445	_set_stacklevel (...)
1147	ALIAS:	1446	ALIAS:
1148	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1149	Coro::schedule = 2	1448	Coro::schedule = 2
…		…
1162		1461
1163	case 1:	1462	case 1:
1164	if (items != 2)	1463	if (items != 2)
1165	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);
1166		1465
1167	prepare_transfer (&ta, ST (0), ST (1));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1168	break;	1467	break;
1169		1468
1170	case 2:	1469	case 2:
1171	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1172	break;	1471	break;
1173		1472
1174	case 3:	1473	case 3:
1175	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
1176	break;	1475	break;
1177		1476
1178	case 4:	1477	case 4:
1179	if (!prepare_cede_notself (&ta))	1478	if (!prepare_cede_notself (aTHX_ &ta))
1180	XSRETURN_EMPTY;	1479	XSRETURN_EMPTY;
1181		1480
1182	break;	1481	break;
1183	}	1482	}
1184		1483
1185	BARRIER;	1484	BARRIER;
1186	TRANSFER (ta);	1485	TRANSFER (ta);
1187	}
1188		1486
1189	void	1487	if (GIMME_V != G_VOID && ta.next != ta.prev)
1190	_clone_state_from (SV *dst, SV *src)	1488	XSRETURN_YES;
		1489	}
		1490
		1491	bool
		1492	_destroy (SV *coro_sv)
1191	CODE:	1493	CODE:
1192	{	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1193	struct coro *coro_src = SvSTATE (src);	1495	OUTPUT:
1194		1496	RETVAL
1195	sv_unmagic (SvRV (dst), PERL_MAGIC_ext);
1196
1197	++coro_src->refcnt;
1198	sv_magicext (SvRV (dst), 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro_src, 0)->mg_flags |= MGf_DUP;
1199	}
1200		1497
1201	void	1498	void
1202	_exit (code)	1499	_exit (code)
1203	int code	1500	int code
1204	PROTOTYPE: $	1501	PROTOTYPE: $
1205	CODE:	1502	CODE:
1206	_exit (code);	1503	_exit (code);
1207		1504
1208	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
1209	cctx_count ()	1515	cctx_count ()
1210	CODE:	1516	CODE:
1211	RETVAL = cctx_count;	1517	RETVAL = cctx_count;
1212	OUTPUT:	1518	OUTPUT:
1213	RETVAL	1519	RETVAL
…		…
1217	CODE:	1523	CODE:
1218	RETVAL = cctx_idle;	1524	RETVAL = cctx_idle;
1219	OUTPUT:	1525	OUTPUT:
1220	RETVAL	1526	RETVAL
1221		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
1222	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1223		1627
1224	BOOT:	1628	BOOT:
1225	{	1629	{
1226	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);
1227		1638
1228	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1229		1640
1230	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1231	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1232	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1233	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1234	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1235	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1236		1647
1237	coro_current = get_sv ("Coro::current", FALSE);
1238	SvREADONLY_on (coro_current);
1239
1240	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1241	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1242		1650
1243	{	1651	{
1244	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1245		1653
1246	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1247	coroapi.save = api_save;
1248	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
1249	coroapi.cede_notself = api_cede_notself;	1656	coroapi.cede_notself = api_cede_notself;
1250	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
1251	coroapi.is_ready = api_is_ready;	1658	coroapi.is_ready = api_is_ready;
1252	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
…		…
1293	CODE:	1700	CODE:
1294	RETVAL = boolSV (api_ready (self));	1701	RETVAL = boolSV (api_ready (self));
1295	OUTPUT:	1702	OUTPUT:
1296	RETVAL	1703	RETVAL
1297		1704
1298	SV *
1299	is_ready (SV *self)
1300	PROTOTYPE: $
1301	CODE:
1302	RETVAL = boolSV (api_is_ready (self));
1303	OUTPUT:
1304	RETVAL
1305
1306	int	1705	int
1307	nready (...)	1706	nready (...)
1308	PROTOTYPE:	1707	PROTOTYPE:
1309	CODE:	1708	CODE:
1310	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1311	OUTPUT:	1710	OUTPUT:
1312	RETVAL	1711	RETVAL
1313		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	if (!invoke)
		1726	croak ("\3terminate\2\n");
		1727
		1728	SvREFCNT_dec (coro->saved_deffh);
		1729	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1730
		1731	hv_store (hv, "desc", sizeof ("desc") - 1,
		1732	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1733
		1734	invoke_av = (AV *)SvRV (invoke);
		1735	len = av_len (invoke_av);
		1736
		1737	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1738
		1739	if (len > 0)
		1740	{
		1741	av_fill (defav, len - 1);
		1742	for (i = 0; i < len; ++i)
		1743	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1744	}
		1745
		1746	SvREFCNT_dec (invoke);
		1747	}
		1748
		1749	void
		1750	_pool_2 (SV *cb)
		1751	CODE:
		1752	{
		1753	struct coro *coro = SvSTATE (coro_current);
		1754
		1755	sv_setsv (cb, &PL_sv_undef);
		1756
		1757	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1758	coro->saved_deffh = 0;
		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
1314	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1315		1778
1316	SV *	1779	SV *
1317	_get_state ()	1780	_get_state ()
1318	CODE:	1781	CODE:

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