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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.135 by root, Fri Jan 5 18:25:51 2007 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 */
…		…
164	coro_cctx *cctx;	195	coro_cctx *cctx;
165		196
166	/* data associated with this coroutine (initial args) */	197	/* data associated with this coroutine (initial args) */
167	AV *args;	198	AV *args;
168	int refcnt;	199	int refcnt;
169	int save; /* CORO_SAVE flags */
170	int flags; /* CF_ flags */	200	int flags; /* CF_ flags */
171		201
172	/* optionally saved, might be zero */	202	/* optionally saved, might be zero */
173	AV *defav; /* @_ */	203	AV *defav; /* @_ */
174	SV *defsv; /* $_ */	204	SV *defsv; /* $_ */
175	SV *errsv; /* $@ */	205	SV *errsv; /* $@ */
		206	SV *deffh; /* default filehandle */
176	SV *irssv; /* $/ */	207	SV *irssv; /* $/ */
177	SV *irssv_sv; /* real $/ cache */	208	SV *irssv_sv; /* real $/ cache */
178		209
179	#define VAR(name,type) type name;	210	#define VAR(name,type) type name;
180	# include "state.h"	211	# include "state.h"
181	#undef VAR	212	#undef VAR
182		213
		214	/* statistics */
		215	int usecount; /* number of transfers to this coro */
		216
183	/* coro process data */	217	/* coro process data */
184	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 */
185	};	227	};
186		228
187	typedef struct coro *Coro__State;	229	typedef struct coro *Coro__State;
188	typedef struct coro *Coro__State_or_hashref;	230	typedef struct coro *Coro__State_or_hashref;
189		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
190	static AV *	249	static AV *
191	coro_clone_padlist (CV *cv)	250	coro_clone_padlist (pTHX_ CV *cv)
192	{	251	{
193	AV *padlist = CvPADLIST (cv);	252	AV *padlist = CvPADLIST (cv);
194	AV *newpadlist, *newpad;	253	AV *newpadlist, *newpad;
195		254
196	newpadlist = newAV ();	255	newpadlist = newAV ();
…		…
208		267
209	return newpadlist;	268	return newpadlist;
210	}	269	}
211		270
212	static void	271	static void
213	free_padlist (AV *padlist)	272	free_padlist (pTHX_ AV *padlist)
214	{	273	{
215	/* may be during global destruction */	274	/* may be during global destruction */
216	if (SvREFCNT (padlist))	275	if (SvREFCNT (padlist))
217	{	276	{
218	I32 i = AvFILLp (padlist);	277	I32 i = AvFILLp (padlist);
…		…
239	AV *padlist;	298	AV *padlist;
240	AV *av = (AV *)mg->mg_obj;	299	AV *av = (AV *)mg->mg_obj;
241		300
242	/* casting is fun. */	301	/* casting is fun. */
243	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	302	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
244	free_padlist (padlist);	303	free_padlist (aTHX_ padlist);
245		304
246	SvREFCNT_dec (av);	305	SvREFCNT_dec (av);
247		306
248	return 0;	307	return 0;
249	}	308	}
…		…
257	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	316	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
258	? SvMAGIC (cv) \	317	? SvMAGIC (cv) \
259	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	318	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
260	: 0	319	: 0
261		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
262	/* the next two functions merely cache the padlists */	347	/* the next two functions merely cache the padlists */
263	static void	348	static void
264	get_padlist (CV *cv)	349	get_padlist (pTHX_ CV *cv)
265	{	350	{
266	MAGIC *mg = CORO_MAGIC (cv);	351	MAGIC *mg = CORO_MAGIC (cv);
267	AV *av;	352	AV *av;
268		353
269	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	354	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)
270	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	355	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
271	else	356	else
272	{	357	{
273	#if PREFER_PERL_FUNCTIONS	358	#if CORO_PREFER_PERL_FUNCTIONS
274	/* this is probably cleaner, but also slower? */	359	/* this is probably cleaner, but also slower? */
275	CV *cp = Perl_cv_clone (cv);	360	CV *cp = Perl_cv_clone (cv);
276	CvPADLIST (cv) = CvPADLIST (cp);	361	CvPADLIST (cv) = CvPADLIST (cp);
277	CvPADLIST (cp) = 0;	362	CvPADLIST (cp) = 0;
278	SvREFCNT_dec (cp);	363	SvREFCNT_dec (cp);
279	#else	364	#else
280	CvPADLIST (cv) = coro_clone_padlist (cv);	365	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
281	#endif	366	#endif
282	}	367	}
283	}	368	}
284		369
285	static void	370	static void
286	put_padlist (CV *cv)	371	put_padlist (pTHX_ CV *cv)
287	{	372	{
288	MAGIC *mg = CORO_MAGIC (cv);	373	MAGIC *mg = CORO_MAGIC (cv);
289	AV *av;	374	AV *av;
290		375
291	if (!mg)	376	if (!mg)
…		…
302	av_extend (av, AvMAX (av) + 1);	387	av_extend (av, AvMAX (av) + 1);
303		388
304	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	389	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
305	}	390	}
306		391
307	#define SB do {	392	/** load & save, init *******************************************************/
308	#define SE } while (0)
309		393
310	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
311
312	static void	394	static void
313	load_perl (Coro__State c)	395	load_perl (pTHX_ Coro__State c)
314	{	396	{
315	#define VAR(name,type) PL_ ## name = c->name;	397	#define VAR(name,type) PL_ ## name = c->name;
316	# include "state.h"	398	# include "state.h"
317	#undef VAR	399	#undef VAR
318		400
319	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	401	GvSV (PL_defgv) = c->defsv;
320	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	402	GvAV (PL_defgv) = c->defav;
321	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	403	GvSV (PL_errgv) = c->errsv;
322	if (c->irssv)	404	GvSV (irsgv) = c->irssv_sv;
323	{
324	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
325	SvREFCNT_dec (c->irssv);
326	else
327	{
328	REPLACE_SV (PL_rs, c->irssv);
329	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
330	sv_setsv (c->irssv_sv, PL_rs);
331	}
332	}
333		405
334	{	406	{
335	dSP;	407	dSP;
336	CV *cv;	408	CV *cv;
337		409
338	/* now do the ugly restore mess */	410	/* now do the ugly restore mess */
339	while ((cv = (CV *)POPs))	411	while ((cv = (CV *)POPs))
340	{	412	{
341	put_padlist (cv); /* mark this padlist as available */	413	put_padlist (aTHX_ cv); /* mark this padlist as available */
342	CvDEPTH (cv) = PTR2IV (POPs);	414	CvDEPTH (cv) = PTR2IV (POPs);
343	CvPADLIST (cv) = (AV *)POPs;	415	CvPADLIST (cv) = (AV *)POPs;
344	}	416	}
345		417
346	PUTBACK;	418	PUTBACK;
347	}	419	}
348	}	420	}
349		421
350	static void	422	static void
351	save_perl (Coro__State c)	423	save_perl (pTHX_ Coro__State c)
352	{	424	{
353	{	425	{
354	dSP;	426	dSP;
355	I32 cxix = cxstack_ix;	427	I32 cxix = cxstack_ix;
356	PERL_CONTEXT *ccstk = cxstack;	428	PERL_CONTEXT *ccstk = cxstack;
…		…
359	/*	431	/*
360	* 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
361	* (and reinitialize) all cv's in the whole callchain :(	433	* (and reinitialize) all cv's in the whole callchain :(
362	*/	434	*/
363		435
364	EXTEND (SP, 3 + 1);
365	PUSHs (Nullsv);	436	XPUSHs (Nullsv);
366	/* this loop was inspired by pp_caller */	437	/* this loop was inspired by pp_caller */
367	for (;;)	438	for (;;)
368	{	439	{
369	while (cxix >= 0)	440	while (cxix >= 0)
370	{	441	{
371	PERL_CONTEXT *cx = &ccstk[cxix--];	442	PERL_CONTEXT *cx = &ccstk[cxix--];
372		443
373	if (CxTYPE (cx) == CXt_SUB)	444	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)
374	{	445	{
375	CV *cv = cx->blk_sub.cv;	446	CV *cv = cx->blk_sub.cv;
376		447
377	if (CvDEPTH (cv))	448	if (CvDEPTH (cv))
378	{	449	{
…		…
380	PUSHs ((SV *)CvPADLIST (cv));	451	PUSHs ((SV *)CvPADLIST (cv));
381	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	452	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
382	PUSHs ((SV *)cv);	453	PUSHs ((SV *)cv);
383		454
384	CvDEPTH (cv) = 0;	455	CvDEPTH (cv) = 0;
385	get_padlist (cv);	456	get_padlist (aTHX_ cv);
386	}	457	}
387	}	458	}
388	}	459	}
389		460
390	if (top_si->si_type == PERLSI_MAIN)	461	if (top_si->si_type == PERLSI_MAIN)
391	break;	462	break;
392		463
393	top_si = top_si->si_prev;	464	top_si = top_si->si_prev;
394	ccstk = top_si->si_cxstack;	465	ccstk = top_si->si_cxstack;
395	cxix = top_si->si_cxix;	466	cxix = top_si->si_cxix;
396	}	467	}
397		468
398	PUTBACK;	469	PUTBACK;
399	}	470	}
400		471
401	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	472	c->defav = GvAV (PL_defgv);
402	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	473	c->defsv = DEFSV;
403	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	474	c->errsv = ERRSV;
404	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	475	c->irssv_sv = GvSV (irsgv);
405		476
406	#define VAR(name,type)c->name = PL_ ## name;	477	#define VAR(name,type)c->name = PL_ ## name;
407	# include "state.h"	478	# include "state.h"
408	#undef VAR	479	#undef VAR
409	}	480	}
…		…
412	* allocate various perl stacks. This is an exact copy	483	* allocate various perl stacks. This is an exact copy
413	* of perl.c:init_stacks, except that it uses less memory	484	* of perl.c:init_stacks, except that it uses less memory
414	* on the (sometimes correct) assumption that coroutines do	485	* on the (sometimes correct) assumption that coroutines do
415	* not usually need a lot of stackspace.	486	* not usually need a lot of stackspace.
416	*/	487	*/
417	#if PREFER_PERL_FUNCTIONS	488	#if CORO_PREFER_PERL_FUNCTIONS
418	# define coro_init_stacks init_stacks	489	# define coro_init_stacks init_stacks
419	#else	490	#else
420	static void	491	static void
421	coro_init_stacks ()	492	coro_init_stacks (pTHX)
422	{	493	{
423	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	494	PL_curstackinfo = new_stackinfo(64, 6);
424	PL_curstackinfo->si_type = PERLSI_MAIN;	495	PL_curstackinfo->si_type = PERLSI_MAIN;
425	PL_curstack = PL_curstackinfo->si_stack;	496	PL_curstack = PL_curstackinfo->si_stack;
426	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	497	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
427		498
428	PL_stack_base = AvARRAY(PL_curstack);	499	PL_stack_base = AvARRAY(PL_curstack);
429	PL_stack_sp = PL_stack_base;	500	PL_stack_sp = PL_stack_base;
430	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	501	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
431		502
432	New(50,PL_tmps_stack,128,SV*);	503	New(50,PL_tmps_stack,64,SV*);
433	PL_tmps_floor = -1;	504	PL_tmps_floor = -1;
434	PL_tmps_ix = -1;	505	PL_tmps_ix = -1;
435	PL_tmps_max = 128;	506	PL_tmps_max = 64;
436		507
437	New(54,PL_markstack,32,I32);	508	New(54,PL_markstack,16,I32);
438	PL_markstack_ptr = PL_markstack;	509	PL_markstack_ptr = PL_markstack;
439	PL_markstack_max = PL_markstack + 32;	510	PL_markstack_max = PL_markstack + 16;
440		511
441	#ifdef SET_MARK_OFFSET	512	#ifdef SET_MARK_OFFSET
442	SET_MARK_OFFSET;	513	SET_MARK_OFFSET;
443	#endif	514	#endif
444		515
445	New(54,PL_scopestack,32,I32);	516	New(54,PL_scopestack,16,I32);
446	PL_scopestack_ix = 0;	517	PL_scopestack_ix = 0;
447	PL_scopestack_max = 32;	518	PL_scopestack_max = 16;
448		519
449	New(54,PL_savestack,64,ANY);	520	New(54,PL_savestack,64,ANY);
450	PL_savestack_ix = 0;	521	PL_savestack_ix = 0;
451	PL_savestack_max = 64;	522	PL_savestack_max = 64;
452		523
453	#if !PERL_VERSION_ATLEAST (5,9,0)	524	#if !PERL_VERSION_ATLEAST (5,9,0)
454	New(54,PL_retstack,16,OP*);	525	New(54,PL_retstack,4,OP*);
455	PL_retstack_ix = 0;	526	PL_retstack_ix = 0;
456	PL_retstack_max = 16;	527	PL_retstack_max = 4;
457	#endif	528	#endif
458	}	529	}
459	#endif	530	#endif
460		531
461	/*	532	/*
462	* destroy the stacks, the callchain etc...	533	* destroy the stacks, the callchain etc...
463	*/	534	*/
464	static void	535	static void
465	coro_destroy_stacks ()	536	coro_destroy_stacks (pTHX)
466	{	537	{
467	if (!IN_DESTRUCT)
468	{
469	/* restore all saved variables and stuff */
470	LEAVE_SCOPE (0);
471	assert (PL_tmps_floor == -1);
472
473	/* free all temporaries */
474	FREETMPS;
475	assert (PL_tmps_ix == -1);
476
477	/* unwind all extra stacks */
478	POPSTACK_TO (PL_mainstack);
479
480	/* unwind main stack */
481	dounwind (-1);
482	}
483
484	while (PL_curstackinfo->si_next)	538	while (PL_curstackinfo->si_next)
485	PL_curstackinfo = PL_curstackinfo->si_next;	539	PL_curstackinfo = PL_curstackinfo->si_next;
486		540
487	while (PL_curstackinfo)	541	while (PL_curstackinfo)
488	{	542	{
…		…
503	#if !PERL_VERSION_ATLEAST (5,9,0)	557	#if !PERL_VERSION_ATLEAST (5,9,0)
504	Safefree (PL_retstack);	558	Safefree (PL_retstack);
505	#endif	559	#endif
506	}	560	}
507		561
508	static void	562	static size_t
509	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)
510	{	597	{
511	/*	598	/*
512	* emulate part of the perl startup here.	599	* emulate part of the perl startup here.
513	*/	600	*/
514
515	coro_init_stacks ();	601	coro_init_stacks (aTHX);
516		602
		603	PL_runops = RUNOPS_DEFAULT;
517	PL_curcop = &PL_compiling;	604	PL_curcop = &PL_compiling;
518	PL_in_eval = EVAL_NULL;	605	PL_in_eval = EVAL_NULL;
		606	PL_comppad = 0;
519	PL_curpm = 0;	607	PL_curpm = 0;
520	PL_localizing = 0;	608	PL_localizing = 0;
521	PL_dirty = 0;	609	PL_dirty = 0;
522	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 */
523		620
524	{	621	{
525	dSP;	622	dSP;
526	LOGOP myop;	623	LOGOP myop;
527		624
528	SvREFCNT_dec (GvAV (PL_defgv));
529	GvAV (PL_defgv) = coro->args; coro->args = 0;
530
531	Zero (&myop, 1, LOGOP);	625	Zero (&myop, 1, LOGOP);
532	myop.op_next = Nullop;	626	myop.op_next = Nullop;
533	myop.op_flags = OPf_WANT_VOID;	627	myop.op_flags = OPf_WANT_VOID;
534		628
535	PUSHMARK (SP);	629	PUSHMARK (SP);
536	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	630	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
537	PUTBACK;	631	PUTBACK;
538	PL_op = (OP *)&myop;	632	PL_op = (OP *)&myop;
539	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	633	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
540	SPAGAIN;	634	SPAGAIN;
541	}	635	}
542
543	ENTER; /* necessary e.g. for dounwind */
544	}	636	}
545		637
546	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
547	free_coro_mortal ()	672	free_coro_mortal (pTHX)
548	{	673	{
549	if (coro_mortal)	674	if (coro_mortal)
550	{	675	{
551	SvREFCNT_dec (coro_mortal);	676	SvREFCNT_dec (coro_mortal);
552	coro_mortal = 0;	677	coro_mortal = 0;
553	}	678	}
554	}	679	}
555		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
556	/* 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 */
557	static void NOINLINE	807	static void NOINLINE
558	prepare_cctx (coro_cctx *cctx)	808	prepare_cctx (pTHX_ coro_cctx *cctx)
559	{	809	{
560	dSP;	810	dSP;
561	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;
562		817
563	Zero (&myop, 1, LOGOP);	818	Zero (&myop, 1, LOGOP);
564	myop.op_next = PL_op;	819	myop.op_next = PL_op;
565	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	820	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
566		821
…		…
572	PL_op = (OP *)&myop;	827	PL_op = (OP *)&myop;
573	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	828	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
574	SPAGAIN;	829	SPAGAIN;
575	}	830	}
576		831
		832	/*
		833	* this is a _very_ stripped down perl interpreter ;)
		834	*/
577	static void	835	static void
578	coro_run (void *arg)	836	coro_run (void *arg)
579	{	837	{
		838	dTHX;
		839
580	/* coro_run is the alternative tail of transfer(), so unlock here. */	840	/* coro_run is the alternative tail of transfer(), so unlock here. */
581	UNLOCK;	841	UNLOCK;
582		842
583	/*	843	/* we now skip the entersub that lead to transfer() */
584	* this is a _very_ stripped down perl interpreter ;)	844	PL_op = PL_op->op_next;
585	*/
586	PL_top_env = &PL_start_env;
587		845
588	/* inject call to cctx_init */	846	/* inject a fake subroutine call to cctx_init */
589	prepare_cctx ((coro_cctx *)arg);	847	prepare_cctx (aTHX_ (coro_cctx *)arg);
590		848
591	/* 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 */
592	PL_restartop = PL_op;	850	PL_restartop = PL_op;
593	perl_run (PL_curinterp);	851	perl_run (PL_curinterp);
594		852
595	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	853	/*
596	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 */
597	}	862	}
598		863
599	static coro_cctx *	864	static coro_cctx *
600	cctx_new ()	865	cctx_new ()
601	{	866	{
602	coro_cctx *cctx;	867	coro_cctx *cctx;
		868	void *stack_start;
		869	size_t stack_size;
603		870
604	++cctx_count;	871	++cctx_count;
605		872
606	Newz (0, cctx, 1, coro_cctx);	873	Newz (0, cctx, 1, coro_cctx);
607		874
608	#if HAVE_MMAP	875	#if HAVE_MMAP
609		876
610	cctx->ssize = ((STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + STACKGUARD) * PAGESIZE;	877	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
611	/* mmap supposedly does allocate-on-write for us */	878	/* mmap supposedly does allocate-on-write for us */
612	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);
613		880
614	if (cctx->sptr == (void *)-1)	881	if (cctx->sptr != (void *)-1)
615	{
616	perror ("FATAL: unable to mmap stack for coroutine");
617	_exit (EXIT_FAILURE);
618	}	882	{
619
620	# if STACKGUARD	883	# if CORO_STACKGUARD
621	mprotect (cctx->sptr, STACKGUARD * PAGESIZE, PROT_NONE);	884	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
622	# 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);
623		895
624	#else
625
626	cctx->ssize = STACKSIZE * (long)sizeof (long);
627	New (0, cctx->sptr, STACKSIZE, long);
628
629	if (!cctx->sptr)	896	if (!cctx->sptr)
630	{	897	{
631	perror ("FATAL: unable to malloc stack for coroutine");	898	perror ("FATAL: unable to allocate stack for coroutine");
632	_exit (EXIT_FAILURE);	899	_exit (EXIT_FAILURE);
633	}	900	}
634		901
635	#endif	902	stack_start = cctx->sptr;
		903	stack_size = cctx->ssize;
		904	}
636		905
637	#if USE_VALGRIND	906	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
638	cctx->valgrind_id = VALGRIND_STACK_REGISTER (
639	STACKGUARD * PAGESIZE + (char *)cctx->sptr,
640	cctx->ssize + (char *)cctx->sptr
641	);
642	#endif
643
644	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);
645		908
646	return cctx;	909	return cctx;
647	}	910	}
648		911
649	static void	912	static void
…		…
652	if (!cctx)	915	if (!cctx)
653	return;	916	return;
654		917
655	--cctx_count;	918	--cctx_count;
656		919
657	#if USE_VALGRIND	920	#if CORO_USE_VALGRIND
658	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	921	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
659	#endif	922	#endif
660		923
661	#if HAVE_MMAP	924	#if HAVE_MMAP
		925	if (cctx->flags & CC_MAPPED)
662	munmap (cctx->sptr, cctx->ssize);	926	munmap (cctx->sptr, cctx->ssize);
663	#else	927	else
		928	#endif
664	Safefree (cctx->sptr);	929	Safefree (cctx->sptr);
665	#endif
666		930
667	Safefree (cctx);	931	Safefree (cctx);
668	}	932	}
669		933
670	static coro_cctx *	934	static coro_cctx *
671	cctx_get ()	935	cctx_get (pTHX)
672	{	936	{
673	coro_cctx *cctx;
674
675	if (cctx_first)	937	while (cctx_first)
676	{	938	{
677	cctx = cctx_first;	939	coro_cctx *cctx = cctx_first;
678	cctx_first = cctx->next;	940	cctx_first = cctx->next;
679	--cctx_idle;	941	--cctx_idle;
680	}	942
681	else	943	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))
682	{	944	return cctx;
683	cctx = cctx_new ();	945
684	PL_op = PL_op->op_next;	946	cctx_destroy (cctx);
685	}	947	}
686		948
687	return cctx;	949	return cctx_new ();
688	}	950	}
689		951
690	static void	952	static void
691	cctx_put (coro_cctx *cctx)	953	cctx_put (coro_cctx *cctx)
692	{	954	{
…		…
695	{	957	{
696	coro_cctx *first = cctx_first;	958	coro_cctx *first = cctx_first;
697	cctx_first = first->next;	959	cctx_first = first->next;
698	--cctx_idle;	960	--cctx_idle;
699		961
700	assert (!first->inuse);
701	cctx_destroy (first);	962	cctx_destroy (first);
702	}	963	}
703		964
704	++cctx_idle;	965	++cctx_idle;
705	cctx->next = cctx_first;	966	cctx->next = cctx_first;
706	cctx_first = cctx;	967	cctx_first = cctx;
707	}	968	}
708		969
709	/* never call directly, always through the coro_state_transfer global variable */	970	/** coroutine switching *****************************************************/
		971
710	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
711	transfer (struct coro *prev, struct coro *next)	993	transfer (pTHX_ struct coro *prev, struct coro *next)
712	{	994	{
713	dSTACKLEVEL;	995	dSTACKLEVEL;
714		996
715	/* sometimes transfer is only called to set idle_sp */	997	/* sometimes transfer is only called to set idle_sp */
716	if (!next)	998	if (!next)
…		…
724		1006
725	if (prev->flags & CF_NEW)	1007	if (prev->flags & CF_NEW)
726	{	1008	{
727	/* create a new empty context */	1009	/* create a new empty context */
728	Newz (0, prev->cctx, 1, coro_cctx);	1010	Newz (0, prev->cctx, 1, coro_cctx);
729	prev->cctx->inuse = 1;
730	prev->flags &= ~CF_NEW;	1011	prev->flags &= ~CF_NEW;
731	prev->flags |= CF_RUNNING;	1012	prev->flags |= CF_RUNNING;
732	}	1013	}
733
734	/*TODO: must not croak here */
735	if (!prev->flags & CF_RUNNING)
736	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
737
738	if (next->flags & CF_RUNNING)
739	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
740
741	if (next->flags & CF_DESTROYED)
742	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
743		1014
744	prev->flags &= ~CF_RUNNING;	1015	prev->flags &= ~CF_RUNNING;
745	next->flags |= CF_RUNNING;	1016	next->flags |= CF_RUNNING;
746		1017
747	LOCK;	1018	LOCK;
…		…
749	if (next->flags & CF_NEW)	1020	if (next->flags & CF_NEW)
750	{	1021	{
751	/* need to start coroutine */	1022	/* need to start coroutine */
752	next->flags &= ~CF_NEW;	1023	next->flags &= ~CF_NEW;
753	/* first get rid of the old state */	1024	/* first get rid of the old state */
754	save_perl (prev);	1025	save_perl (aTHX_ prev);
755	/* setup coroutine call */	1026	/* setup coroutine call */
756	setup_coro (next);	1027	coro_setup (aTHX_ next);
757	/* need a new stack */
758	assert (!next->cctx);
759	}	1028	}
760	else	1029	else
761	{	1030	{
762	/* coroutine already started */	1031	/* coroutine already started */
763	save_perl (prev);	1032	save_perl (aTHX_ prev);
764	load_perl (next);	1033	load_perl (aTHX_ next);
765	}	1034	}
766		1035
767	prev__cctx = prev->cctx;	1036	prev__cctx = prev->cctx;
768		1037
769	/* possibly "free" the cctx */	1038	/* possibly "free" the cctx */
770	if (prev__cctx->idle_sp == STACKLEVEL)	1039	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))
771	{	1040	{
772	/* 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 */
773	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));
774		1043
775	prev->cctx = 0;	1044	prev->cctx = 0;
776		1045
777	cctx_put (prev__cctx);	1046	cctx_put (prev__cctx);
778	prev__cctx->inuse = 0;
779	}	1047	}
780		1048
		1049	++next->usecount;
		1050
781	if (!next->cctx)	1051	if (!next->cctx)
782	{
783	next->cctx = cctx_get ();	1052	next->cctx = cctx_get (aTHX);
784	assert (!next->cctx->inuse);
785	next->cctx->inuse = 1;
786	}
787		1053
788	if (prev__cctx != next->cctx)	1054	if (prev__cctx != next->cctx)
789	{	1055	{
790	prev__cctx->top_env = PL_top_env;	1056	prev__cctx->top_env = PL_top_env;
791	PL_top_env = next->cctx->top_env;	1057	PL_top_env = next->cctx->top_env;
792	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1058	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
793	}	1059	}
794		1060
795	free_coro_mortal ();	1061	free_coro_mortal (aTHX);
796	UNLOCK;	1062	UNLOCK;
797	}	1063	}
798	}	1064	}
799		1065
800	struct transfer_args	1066	struct transfer_args
801	{	1067	{
802	struct coro *prev, *next;	1068	struct coro *prev, *next;
803	};	1069	};
804		1070
805	#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)
		1073
		1074	/** high level stuff ********************************************************/
806		1075
807	static int	1076	static int
808	coro_state_destroy (struct coro *coro)	1077	coro_state_destroy (pTHX_ struct coro *coro)
809	{	1078	{
810	if (coro->flags & CF_DESTROYED)	1079	if (coro->flags & CF_DESTROYED)
811	return 0;	1080	return 0;
812		1081
813	coro->flags |= CF_DESTROYED;	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 */
814		1094
815	if (coro->mainstack && coro->mainstack != main_mainstack)	1095	if (coro->mainstack && coro->mainstack != main_mainstack)
816	{	1096	{
817	assert (!(coro->flags & CF_RUNNING));
818
819	struct coro temp;	1097	struct coro temp;
820	Zero (&temp, 1, struct coro);
821	temp.save = CORO_SAVE_ALL;
822		1098
823	if (coro->flags & CF_RUNNING)	1099	if (coro->flags & CF_RUNNING)
824	croak ("FATAL: tried to destroy currently running coroutine");	1100	croak ("FATAL: tried to destroy currently running coroutine");
825		1101
826	save_perl (&temp);	1102	save_perl (aTHX_ &temp);
827	load_perl (coro);	1103	load_perl (aTHX_ coro);
828		1104
829	coro_destroy_stacks ();	1105	coro_destroy (aTHX_ coro);
830		1106
831	load_perl (&temp); /* this will get rid of defsv etc.. */	1107	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
832		1108
833	coro->mainstack = 0;	1109	coro->mainstack = 0;
834	}	1110	}
835		1111
836	cctx_destroy (coro->cctx);	1112	cctx_destroy (coro->cctx);
837	SvREFCNT_dec (coro->args);	1113	SvREFCNT_dec (coro->args);
838		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
839	return 1;	1119	return 1;
840	}	1120	}
841		1121
842	static int	1122	static int
843	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1123	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
844	{	1124	{
845	struct coro *coro = (struct coro *)mg->mg_ptr;	1125	struct coro *coro = (struct coro *)mg->mg_ptr;
846	mg->mg_ptr = 0;	1126	mg->mg_ptr = 0;
847		1127
		1128	coro->hv = 0;
		1129
848	if (--coro->refcnt < 0)	1130	if (--coro->refcnt < 0)
849	{	1131	{
850	coro_state_destroy (coro);	1132	coro_state_destroy (aTHX_ coro);
851	Safefree (coro);	1133	Safefree (coro);
852	}	1134	}
853		1135
854	return 0;	1136	return 0;
855	}	1137	}
…		…
873	#else	1155	#else
874	# define MGf_DUP 0	1156	# define MGf_DUP 0
875	#endif	1157	#endif
876	};	1158	};
877		1159
878	static struct coro *
879	SvSTATE (SV *coro)
880	{
881	HV *stash;
882	MAGIC *mg;
883
884	if (SvROK (coro))
885	coro = SvRV (coro);
886
887	stash = SvSTASH (coro);
888	if (stash != coro_stash && stash != coro_state_stash)
889	{
890	/* very slow, but rare, check */
891	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
892	croak ("Coro::State object required");
893	}
894
895	mg = SvMAGIC (coro);
896	assert (mg->mg_type == PERL_MAGIC_ext);
897	return (struct coro *)mg->mg_ptr;
898	}
899
900	static void	1160	static void
901	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)
902	{	1162	{
903	ta->prev = SvSTATE (prev_sv);	1163	ta->prev = SvSTATE (prev_sv);
904	ta->next = SvSTATE (next_sv);	1164	ta->next = SvSTATE (next_sv);
		1165	TRANSFER_CHECK (*ta);
905	}	1166	}
906		1167
907	static void	1168	static void
908	api_transfer (SV *prev_sv, SV *next_sv)	1169	api_transfer (SV *prev_sv, SV *next_sv)
909	{	1170	{
		1171	dTHX;
910	struct transfer_args ta;	1172	struct transfer_args ta;
911		1173
912	prepare_transfer (&ta, prev_sv, next_sv);	1174	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
913	TRANSFER (ta);	1175	TRANSFER (ta);
914	}	1176	}
915		1177
916	static int
917	api_save (SV *coro_sv, int new_save)
918	{
919	struct coro *coro = SvSTATE (coro_sv);
920	int old_save = coro->save;
921
922	if (new_save >= 0)
923	coro->save = new_save;
924
925	return old_save;
926	}
927
928	/** Coro ********************************************************************/	1178	/** Coro ********************************************************************/
929		1179
930	#define PRIO_MAX 3
931	#define PRIO_HIGH 1
932	#define PRIO_NORMAL 0
933	#define PRIO_LOW -1
934	#define PRIO_IDLE -3
935	#define PRIO_MIN -4
936
937	/* for Coro.pm */
938	static SV *coro_current;
939	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
940	static int coro_nready;
941
942	static void	1180	static void
943	coro_enq (SV *coro_sv)	1181	coro_enq (pTHX_ SV *coro_sv)
944	{	1182	{
945	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);
946	coro_nready++;
947	}	1184	}
948		1185
949	static SV *	1186	static SV *
950	coro_deq (int min_prio)	1187	coro_deq (pTHX_ int min_prio)
951	{	1188	{
952	int prio = PRIO_MAX - PRIO_MIN;	1189	int prio = PRIO_MAX - PRIO_MIN;
953		1190
954	min_prio -= PRIO_MIN;	1191	min_prio -= PRIO_MIN;
955	if (min_prio < 0)	1192	if (min_prio < 0)
956	min_prio = 0;	1193	min_prio = 0;
957		1194
958	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1195	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )
959	if (AvFILLp (coro_ready [prio]) >= 0)	1196	if (AvFILLp (coro_ready [prio]) >= 0)
960	{
961	coro_nready--;
962	return av_shift (coro_ready [prio]);	1197	return av_shift (coro_ready [prio]);
963	}
964		1198
965	return 0;	1199	return 0;
966	}	1200	}
967		1201
968	static int	1202	static int
969	api_ready (SV *coro_sv)	1203	api_ready (SV *coro_sv)
970	{	1204	{
		1205	dTHX;
971	struct coro *coro;	1206	struct coro *coro;
972		1207
973	if (SvROK (coro_sv))	1208	if (SvROK (coro_sv))
974	coro_sv = SvRV (coro_sv);	1209	coro_sv = SvRV (coro_sv);
975		1210
…		…
979	return 0;	1214	return 0;
980		1215
981	coro->flags |= CF_READY;	1216	coro->flags |= CF_READY;
982		1217
983	LOCK;	1218	LOCK;
984	coro_enq (SvREFCNT_inc (coro_sv));	1219	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
		1220	++coro_nready;
985	UNLOCK;	1221	UNLOCK;
986		1222
987	return 1;	1223	return 1;
988	}	1224	}
989		1225
990	static int	1226	static int
991	api_is_ready (SV *coro_sv)	1227	api_is_ready (SV *coro_sv)
992	{	1228	{
		1229	dTHX;
993	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1230	return !!(SvSTATE (coro_sv)->flags & CF_READY);
994	}	1231	}
995		1232
996	static void	1233	static void
997	prepare_schedule (struct transfer_args *ta)	1234	prepare_schedule (pTHX_ struct transfer_args *ta)
998	{	1235	{
999	SV *prev_sv, *next_sv;	1236	SV *prev_sv, *next_sv;
1000		1237
1001	for (;;)	1238	for (;;)
1002	{	1239	{
1003	LOCK;	1240	LOCK;
1004	next_sv = coro_deq (PRIO_MIN);	1241	next_sv = coro_deq (aTHX_ PRIO_MIN);
1005	UNLOCK;
1006		1242
1007	/* nothing to schedule: call the idle handler */	1243	/* nothing to schedule: call the idle handler */
1008	if (!next_sv)	1244	if (!next_sv)
1009	{	1245	{
1010	dSP;	1246	dSP;
		1247	UNLOCK;
1011		1248
1012	ENTER;	1249	ENTER;
1013	SAVETMPS;	1250	SAVETMPS;
1014		1251
1015	PUSHMARK (SP);	1252	PUSHMARK (SP);
…		…
1024	ta->next = SvSTATE (next_sv);	1261	ta->next = SvSTATE (next_sv);
1025		1262
1026	/* cannot transfer to destroyed coros, skip and look for next */	1263	/* cannot transfer to destroyed coros, skip and look for next */
1027	if (ta->next->flags & CF_DESTROYED)	1264	if (ta->next->flags & CF_DESTROYED)
1028	{	1265	{
		1266	UNLOCK;
1029	SvREFCNT_dec (next_sv);	1267	SvREFCNT_dec (next_sv);
		1268	/* coro_nready is already taken care of by destroy */
1030	continue;	1269	continue;
1031	}	1270	}
1032		1271
		1272	--coro_nready;
		1273	UNLOCK;
1033	break;	1274	break;
1034	}	1275	}
1035		1276
1036	/* free this only after the transfer */	1277	/* free this only after the transfer */
1037	prev_sv = SvRV (coro_current);	1278	prev_sv = SvRV (coro_current);
1038	SvRV_set (coro_current, next_sv);
1039	ta->prev = SvSTATE (prev_sv);	1279	ta->prev = SvSTATE (prev_sv);
1040		1280	TRANSFER_CHECK (*ta);
1041	assert (ta->next->flags & CF_READY);	1281	assert (ta->next->flags & CF_READY);
1042	ta->next->flags &= ~CF_READY;	1282	ta->next->flags &= ~CF_READY;
		1283	SvRV_set (coro_current, next_sv);
1043		1284
1044	LOCK;	1285	LOCK;
1045	free_coro_mortal ();	1286	free_coro_mortal (aTHX);
1046	coro_mortal = prev_sv;	1287	coro_mortal = prev_sv;
1047	UNLOCK;	1288	UNLOCK;
1048	}	1289	}
1049		1290
1050	static void	1291	static void
1051	prepare_cede (struct transfer_args *ta)	1292	prepare_cede (pTHX_ struct transfer_args *ta)
1052	{	1293	{
1053	api_ready (coro_current);	1294	api_ready (coro_current);
1054	prepare_schedule (ta);	1295	prepare_schedule (aTHX_ ta);
1055	}	1296	}
1056		1297
1057	static int	1298	static int
1058	prepare_cede_notself (struct transfer_args *ta)	1299	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1059	{	1300	{
1060	if (coro_nready)	1301	if (coro_nready)
1061	{	1302	{
1062	SV *prev = SvRV (coro_current);	1303	SV *prev = SvRV (coro_current);
1063	prepare_schedule (ta);	1304	prepare_schedule (aTHX_ ta);
1064	api_ready (prev);	1305	api_ready (prev);
1065	return 1;	1306	return 1;
1066	}	1307	}
1067	else	1308	else
1068	return 0;	1309	return 0;
1069	}	1310	}
1070		1311
1071	static void	1312	static void
1072	api_schedule (void)	1313	api_schedule (void)
1073	{	1314	{
		1315	dTHX;
1074	struct transfer_args ta;	1316	struct transfer_args ta;
1075		1317
1076	prepare_schedule (&ta);	1318	prepare_schedule (aTHX_ &ta);
1077	TRANSFER (ta);	1319	TRANSFER (ta);
1078	}	1320	}
1079		1321
1080	static int	1322	static int
1081	api_cede (void)	1323	api_cede (void)
1082	{	1324	{
		1325	dTHX;
1083	struct transfer_args ta;	1326	struct transfer_args ta;
1084		1327
1085	prepare_cede (&ta);	1328	prepare_cede (aTHX_ &ta);
1086		1329
1087	if (ta.prev != ta.next)	1330	if (ta.prev != ta.next)
1088	{	1331	{
1089	TRANSFER (ta);	1332	TRANSFER (ta);
1090	return 1;	1333	return 1;
…		…
1094	}	1337	}
1095		1338
1096	static int	1339	static int
1097	api_cede_notself (void)	1340	api_cede_notself (void)
1098	{	1341	{
		1342	dTHX;
1099	struct transfer_args ta;	1343	struct transfer_args ta;
1100		1344
1101	if (prepare_cede_notself (&ta))	1345	if (prepare_cede_notself (aTHX_ &ta))
1102	{	1346	{
1103	TRANSFER (ta);	1347	TRANSFER (ta);
1104	return 1;	1348	return 1;
1105	}	1349	}
1106	else	1350	else
1107	return 0;	1351	return 0;
1108	}	1352	}
1109		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
1110	MODULE = Coro::State PACKAGE = Coro::State	1380	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1111		1381
1112	PROTOTYPES: DISABLE	1382	PROTOTYPES: DISABLE
1113		1383
1114	BOOT:	1384	BOOT:
1115	{	1385	{
1116	#ifdef USE_ITHREADS	1386	#ifdef USE_ITHREADS
1117	MUTEX_INIT (&coro_mutex);	1387	MUTEX_INIT (&coro_mutex);
1118	#endif	1388	#endif
1119	BOOT_PAGESIZE;	1389	BOOT_PAGESIZE;
1120		1390
		1391	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1392	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1393
1121	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1394	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1122		1395
		1396	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1397	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1123	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1398	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1124	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1125	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1126	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1127	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1399	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1128		1400
1129	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;
1130		1406
1131	coroapi.ver = CORO_API_VERSION;	1407	coroapi.ver = CORO_API_VERSION;
1132	coroapi.transfer = api_transfer;	1408	coroapi.transfer = api_transfer;
1133		1409
1134	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1410	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1141	struct coro *coro;	1417	struct coro *coro;
1142	HV *hv;	1418	HV *hv;
1143	int i;	1419	int i;
1144		1420
1145	Newz (0, coro, 1, struct coro);	1421	Newz (0, coro, 1, struct coro);
1146	coro->args = newAV ();	1422	coro->args = newAV ();
1147	coro->save = CORO_SAVE_ALL;
1148	coro->flags = CF_NEW;	1423	coro->flags = CF_NEW;
1149		1424
		1425	if (coro_first) coro_first->prev = coro;
		1426	coro->next = coro_first;
		1427	coro_first = coro;
		1428
1150	hv = newHV ();	1429	coro->hv = hv = newHV ();
1151	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;
1152	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1431	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1153		1432
		1433	av_extend (coro->args, items - 1);
		1434
1154	for (i = 1; i < items; i++)	1435	for (i = 1; i < items; i++)
1155	av_push (coro->args, newSVsv (ST (i)));	1436	av_push (coro->args, newSVsv (ST (i)));
1156	}	1437	}
1157	OUTPUT:	1438	OUTPUT:
1158	RETVAL	1439	RETVAL
1159		1440
1160	int	1441	# these not obviously related functions are all rolled into the same xs
1161	save (SV *coro, int new_save = -1)	1442	# function to increase chances that they all will call transfer with the same
1162	CODE:	1443	# stack offset
1163	RETVAL = api_save (coro, new_save);
1164	OUTPUT:
1165	RETVAL
1166
1167	void	1444	void
1168	_set_stacklevel (...)	1445	_set_stacklevel (...)
1169	ALIAS:	1446	ALIAS:
1170	Coro::State::transfer = 1	1447	Coro::State::transfer = 1
1171	Coro::schedule = 2	1448	Coro::schedule = 2
…		…
1184		1461
1185	case 1:	1462	case 1:
1186	if (items != 2)	1463	if (items != 2)
1187	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);
1188		1465
1189	prepare_transfer (&ta, ST (0), ST (1));	1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1190	break;	1467	break;
1191		1468
1192	case 2:	1469	case 2:
1193	prepare_schedule (&ta);	1470	prepare_schedule (aTHX_ &ta);
1194	break;	1471	break;
1195		1472
1196	case 3:	1473	case 3:
1197	prepare_cede (&ta);	1474	prepare_cede (aTHX_ &ta);
1198	break;	1475	break;
1199		1476
1200	case 4:	1477	case 4:
1201	if (!prepare_cede_notself (&ta))	1478	if (!prepare_cede_notself (aTHX_ &ta))
1202	XSRETURN_EMPTY;	1479	XSRETURN_EMPTY;
1203		1480
1204	break;	1481	break;
1205	}	1482	}
1206		1483
…		…
1212	}	1489	}
1213		1490
1214	bool	1491	bool
1215	_destroy (SV *coro_sv)	1492	_destroy (SV *coro_sv)
1216	CODE:	1493	CODE:
1217	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1218	OUTPUT:	1495	OUTPUT:
1219	RETVAL	1496	RETVAL
1220		1497
1221	void	1498	void
1222	_exit (code)	1499	_exit (code)
…		…
1224	PROTOTYPE: $	1501	PROTOTYPE: $
1225	CODE:	1502	CODE:
1226	_exit (code);	1503	_exit (code);
1227		1504
1228	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
1229	cctx_count ()	1515	cctx_count ()
1230	CODE:	1516	CODE:
1231	RETVAL = cctx_count;	1517	RETVAL = cctx_count;
1232	OUTPUT:	1518	OUTPUT:
1233	RETVAL	1519	RETVAL
…		…
1237	CODE:	1523	CODE:
1238	RETVAL = cctx_idle;	1524	RETVAL = cctx_idle;
1239	OUTPUT:	1525	OUTPUT:
1240	RETVAL	1526	RETVAL
1241		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
1242	MODULE = Coro::State PACKAGE = Coro	1626	MODULE = Coro::State PACKAGE = Coro
1243		1627
1244	BOOT:	1628	BOOT:
1245	{	1629	{
1246	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);
1247		1638
1248	coro_stash = gv_stashpv ("Coro", TRUE);	1639	coro_stash = gv_stashpv ("Coro", TRUE);
1249		1640
1250	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1251	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1252	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1253	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1254	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1645	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1255	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1646	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1256		1647
1257	coro_current = get_sv ("Coro::current", FALSE);
1258	SvREADONLY_on (coro_current);
1259
1260	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1261	coro_ready[i] = newAV ();	1649	coro_ready[i] = newAV ();
1262		1650
1263	{	1651	{
1264	SV *sv = perl_get_sv("Coro::API", 1);	1652	SV *sv = perl_get_sv("Coro::API", 1);
1265		1653
1266	coroapi.schedule = api_schedule;	1654	coroapi.schedule = api_schedule;
1267	coroapi.save = api_save;
1268	coroapi.cede = api_cede;	1655	coroapi.cede = api_cede;
1269	coroapi.cede_notself = api_cede_notself;	1656	coroapi.cede_notself = api_cede_notself;
1270	coroapi.ready = api_ready;	1657	coroapi.ready = api_ready;
1271	coroapi.is_ready = api_is_ready;	1658	coroapi.is_ready = api_is_ready;
1272	coroapi.nready = &coro_nready;	1659	coroapi.nready = &coro_nready;
…		…
1313	CODE:	1700	CODE:
1314	RETVAL = boolSV (api_ready (self));	1701	RETVAL = boolSV (api_ready (self));
1315	OUTPUT:	1702	OUTPUT:
1316	RETVAL	1703	RETVAL
1317		1704
1318	SV *
1319	is_ready (SV *self)
1320	PROTOTYPE: $
1321	CODE:
1322	RETVAL = boolSV (api_is_ready (self));
1323	OUTPUT:
1324	RETVAL
1325
1326	int	1705	int
1327	nready (...)	1706	nready (...)
1328	PROTOTYPE:	1707	PROTOTYPE:
1329	CODE:	1708	CODE:
1330	RETVAL = coro_nready;	1709	RETVAL = coro_nready;
1331	OUTPUT:	1710	OUTPUT:
1332	RETVAL	1711	RETVAL
1333		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
1334	MODULE = Coro::State PACKAGE = Coro::AIO	1777	MODULE = Coro::State PACKAGE = Coro::AIO
1335		1778
1336	SV *	1779	SV *
1337	_get_state ()	1780	_get_state ()
1338	CODE:	1781	CODE:

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