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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.144 by root, Sun Mar 4 11:45:23 2007 UTC vs.
Revision 1.194 by root, Sat Oct 6 00:08:04 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
…		…
73	/* 5.8.7 */	75	/* 5.8.7 */
74	#ifndef SvRV_set	76	#ifndef SvRV_set
75	# define SvRV_set(s,v) SvRV(s) = (v)	77	# define SvRV_set(s,v) SvRV(s) = (v)
76	#endif	78	#endif
77		79
		80	/* 5.8.8 */
		81	#ifndef GV_NOTQUAL
		82	# define GV_NOTQUAL 0
		83	#endif
		84	#ifndef newSV
		85	# define newSV(l) NEWSV(0,l)
		86	#endif
		87
78	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	88	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
79	# undef CORO_STACKGUARD	89	# undef CORO_STACKGUARD
80	#endif	90	#endif
81		91
82	#ifndef CORO_STACKGUARD	92	#ifndef CORO_STACKGUARD
…		…
86	/* prefer perl internal functions over our own? */	96	/* prefer perl internal functions over our own? */
87	#ifndef CORO_PREFER_PERL_FUNCTIONS	97	#ifndef CORO_PREFER_PERL_FUNCTIONS
88	# define CORO_PREFER_PERL_FUNCTIONS 0	98	# define CORO_PREFER_PERL_FUNCTIONS 0
89	#endif	99	#endif
90		100
91	/* 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
92	* to the current C stack pointer. Its property is that it changes with each call	102	* portable way as possible. */
93	* and should be unique. */
94	#define dSTACKLEVEL int stacklevel	103	#define dSTACKLEVEL volatile char stacklevel
95	#define STACKLEVEL ((void *)&stacklevel)	104	#define STACKLEVEL ((void *)&stacklevel)
96		105
97	#define IN_DESTRUCT (PL_main_cv == Nullcv)	106	#define IN_DESTRUCT (PL_main_cv == Nullcv)
98		107
99	#if __GNUC__ >= 3	108	#if __GNUC__ >= 3
100	# define attribute(x) __attribute__(x)	109	# define attribute(x) __attribute__(x)
101	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	110	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		111	# define expect(expr,value) __builtin_expect ((expr),(value))
102	#else	112	#else
103	# define attribute(x)	113	# define attribute(x)
104	# define BARRIER	114	# define BARRIER
		115	# define expect(expr,value) (expr)
105	#endif	116	#endif
		117
		118	#define expect_false(expr) expect ((expr) != 0, 0)
		119	#define expect_true(expr) expect ((expr) != 0, 1)
106		120
107	#define NOINLINE attribute ((noinline))	121	#define NOINLINE attribute ((noinline))
108		122
109	#include "CoroAPI.h"	123	#include "CoroAPI.h"
110		124
…		…
124	I32 laststype;	138	I32 laststype;
125	int laststatval;	139	int laststatval;
126	Stat_t statcache;	140	Stat_t statcache;
127	};	141	};
128		142
		143	static size_t coro_stacksize = CORO_STACKSIZE;
129	static struct CoroAPI coroapi;	144	static struct CoroAPI coroapi;
130	static AV *main_mainstack; /* used to differentiate between $main and others */	145	static AV *main_mainstack; /* used to differentiate between $main and others */
		146	static JMPENV *main_top_env;
131	static HV *coro_state_stash, *coro_stash;	147	static HV *coro_state_stash, *coro_stash;
132	static SV *coro_mortal; /* will be freed after next transfer */	148	static SV *coro_mortal; /* will be freed after next transfer */
133		149
		150	static GV *irsgv; /* $/ */
		151	static GV *stdoutgv; /* *STDOUT */
		152
		153	/* async_pool helper stuff */
		154	static SV *sv_pool_rss;
		155	static SV *sv_pool_size;
		156	static AV *av_async_pool;
		157
134	static struct coro_cctx *cctx_first;	158	static struct coro_cctx *cctx_first;
135	static int cctx_count, cctx_idle;	159	static int cctx_count, cctx_idle;
		160
		161	enum {
		162	CC_MAPPED = 0x01,
		163	CC_NOREUSE = 0x02, /* throw this away after tracing */
		164	CC_TRACE = 0x04,
		165	CC_TRACE_SUB = 0x08, /* trace sub calls */
		166	CC_TRACE_LINE = 0x10, /* trace each statement */
		167	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		168	};
136		169
137	/* this is a structure representing a c-level coroutine */	170	/* this is a structure representing a c-level coroutine */
138	typedef struct coro_cctx {	171	typedef struct coro_cctx {
139	struct coro_cctx *next;	172	struct coro_cctx *next;
140		173
141	/* the stack */	174	/* the stack */
142	void *sptr;	175	void *sptr;
143	ssize_t ssize; /* positive == mmap, otherwise malloc */	176	size_t ssize;
144		177
145	/* cpu state */	178	/* cpu state */
146	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	179	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
147	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	180	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
148	JMPENV *top_env;	181	JMPENV *top_env;
149	coro_context cctx;	182	coro_context cctx;
150		183
151	int inuse;
152
153	#if CORO_USE_VALGRIND	184	#if CORO_USE_VALGRIND
154	int valgrind_id;	185	int valgrind_id;
155	#endif	186	#endif
		187	unsigned char flags;
156	} coro_cctx;	188	} coro_cctx;
157		189
158	enum {	190	enum {
159	CF_RUNNING = 0x0001, /* coroutine is running */	191	CF_RUNNING = 0x0001, /* coroutine is running */
160	CF_READY = 0x0002, /* coroutine is ready */	192	CF_READY = 0x0002, /* coroutine is ready */
…		…
168	coro_cctx *cctx;	200	coro_cctx *cctx;
169		201
170	/* data associated with this coroutine (initial args) */	202	/* data associated with this coroutine (initial args) */
171	AV *args;	203	AV *args;
172	int refcnt;	204	int refcnt;
173	int save; /* CORO_SAVE flags */
174	int flags; /* CF_ flags */	205	int flags; /* CF_ flags */
175		206
176	/* optionally saved, might be zero */	207	/* optionally saved, might be zero */
177	AV *defav; /* @_ */	208	AV *defav; /* @_ */
178	SV *defsv; /* $_ */	209	SV *defsv; /* $_ */
179	SV *errsv; /* $@ */	210	SV *errsv; /* $@ */
		211	SV *deffh; /* default filehandle */
180	SV *irssv; /* $/ */	212	SV *irssv; /* $/ */
181	SV *irssv_sv; /* real $/ cache */	213	SV *irssv_sv; /* real $/ cache */
182		214
183	#define VAR(name,type) type name;	215	#define VAR(name,type) type name;
184	# include "state.h"	216	# include "state.h"
185	#undef VAR	217	#undef VAR
186		218
		219	/* statistics */
		220	int usecount; /* number of transfers to this coro */
		221
187	/* coro process data */	222	/* coro process data */
188	int prio;	223	int prio;
		224	//SV *throw;
		225
		226	/* async_pool */
		227	SV *saved_deffh;
		228
		229	/* linked list */
		230	struct coro *next, *prev;
		231	HV *hv; /* the perl hash associated with this coro, if any */
189	};	232	};
190		233
191	typedef struct coro *Coro__State;	234	typedef struct coro *Coro__State;
192	typedef struct coro *Coro__State_or_hashref;	235	typedef struct coro *Coro__State_or_hashref;
193		236
…		…
202		245
203	/* for Coro.pm */	246	/* for Coro.pm */
204	static SV *coro_current;	247	static SV *coro_current;
205	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	248	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
206	static int coro_nready;	249	static int coro_nready;
		250	static struct coro *coro_first;
207		251
208	/** lowlevel stuff **********************************************************/	252	/** lowlevel stuff **********************************************************/
209		253
210	static AV *	254	static AV *
211	coro_clone_padlist (CV *cv)	255	coro_clone_padlist (pTHX_ CV *cv)
212	{	256	{
213	AV *padlist = CvPADLIST (cv);	257	AV *padlist = CvPADLIST (cv);
214	AV *newpadlist, *newpad;	258	AV *newpadlist, *newpad;
215		259
216	newpadlist = newAV ();	260	newpadlist = newAV ();
…		…
228		272
229	return newpadlist;	273	return newpadlist;
230	}	274	}
231		275
232	static void	276	static void
233	free_padlist (AV *padlist)	277	free_padlist (pTHX_ AV *padlist)
234	{	278	{
235	/* may be during global destruction */	279	/* may be during global destruction */
236	if (SvREFCNT (padlist))	280	if (SvREFCNT (padlist))
237	{	281	{
238	I32 i = AvFILLp (padlist);	282	I32 i = AvFILLp (padlist);
…		…
259	AV *padlist;	303	AV *padlist;
260	AV *av = (AV *)mg->mg_obj;	304	AV *av = (AV *)mg->mg_obj;
261		305
262	/* casting is fun. */	306	/* casting is fun. */
263	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	307	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
264	free_padlist (padlist);	308	free_padlist (aTHX_ padlist);
265		309
266	SvREFCNT_dec (av);	310	SvREFCNT_dec (av);
267		311
268	return 0;	312	return 0;
269	}	313	}
…		…
277	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	321	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
278	? SvMAGIC (cv) \	322	? SvMAGIC (cv) \
279	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	323	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
280	: 0	324	: 0
281		325
		326	static struct coro *
		327	SvSTATE_ (pTHX_ SV *coro)
		328	{
		329	HV *stash;
		330	MAGIC *mg;
		331
		332	if (SvROK (coro))
		333	coro = SvRV (coro);
		334
		335	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		336	croak ("Coro::State object required");
		337
		338	stash = SvSTASH (coro);
		339	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		340	{
		341	/* very slow, but rare, check */
		342	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		343	croak ("Coro::State object required");
		344	}
		345
		346	mg = CORO_MAGIC (coro);
		347	return (struct coro *)mg->mg_ptr;
		348	}
		349
		350	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		351
282	/* the next two functions merely cache the padlists */	352	/* the next two functions merely cache the padlists */
283	static void	353	static void
284	get_padlist (CV *cv)	354	get_padlist (pTHX_ CV *cv)
285	{	355	{
286	MAGIC *mg = CORO_MAGIC (cv);	356	MAGIC *mg = CORO_MAGIC (cv);
287	AV *av;	357	AV *av;
288		358
289	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	359	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
290	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	360	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
291	else	361	else
292	{	362	{
293	#if CORO_PREFER_PERL_FUNCTIONS	363	#if CORO_PREFER_PERL_FUNCTIONS
294	/* this is probably cleaner, but also slower? */	364	/* this is probably cleaner, but also slower? */
295	CV *cp = Perl_cv_clone (cv);	365	CV *cp = Perl_cv_clone (cv);
296	CvPADLIST (cv) = CvPADLIST (cp);	366	CvPADLIST (cv) = CvPADLIST (cp);
297	CvPADLIST (cp) = 0;	367	CvPADLIST (cp) = 0;
298	SvREFCNT_dec (cp);	368	SvREFCNT_dec (cp);
299	#else	369	#else
300	CvPADLIST (cv) = coro_clone_padlist (cv);	370	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);
301	#endif	371	#endif
302	}	372	}
303	}	373	}
304		374
305	static void	375	static void
306	put_padlist (CV *cv)	376	put_padlist (pTHX_ CV *cv)
307	{	377	{
308	MAGIC *mg = CORO_MAGIC (cv);	378	MAGIC *mg = CORO_MAGIC (cv);
309	AV *av;	379	AV *av;
310		380
311	if (!mg)	381	if (expect_false (!mg))
312	{	382	{
313	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	383	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
314	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	384	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
315	mg->mg_virtual = &vtbl_coro;	385	mg->mg_virtual = &vtbl_coro;
316	mg->mg_obj = (SV *)newAV ();	386	mg->mg_obj = (SV *)newAV ();
317	}	387	}
318		388
319	av = (AV *)mg->mg_obj;	389	av = (AV *)mg->mg_obj;
320		390
321	if (AvFILLp (av) >= AvMAX (av))	391	if (expect_false (AvFILLp (av) >= AvMAX (av)))
322	av_extend (av, AvMAX (av) + 1);	392	av_extend (av, AvMAX (av) + 1);
323		393
324	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	394	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
325	}	395	}
326		396
327	/** load & save, init *******************************************************/	397	/** load & save, init *******************************************************/
328		398
329	#define SB do {
330	#define SE } while (0)
331
332	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
333
334	static void	399	static void
335	load_perl (Coro__State c)	400	load_perl (pTHX_ Coro__State c)
336	{	401	{
337	#define VAR(name,type) PL_ ## name = c->name;	402	#define VAR(name,type) PL_ ## name = c->name;
338	# include "state.h"	403	# include "state.h"
339	#undef VAR	404	#undef VAR
340		405
341	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	406	GvSV (PL_defgv) = c->defsv;
342	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	407	GvAV (PL_defgv) = c->defav;
343	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);	408	GvSV (PL_errgv) = c->errsv;
344	if (c->irssv)	409	GvSV (irsgv) = c->irssv_sv;
345	{
346	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
347	SvREFCNT_dec (c->irssv);
348	else
349	{
350	REPLACE_SV (PL_rs, c->irssv);
351	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
352	sv_setsv (c->irssv_sv, PL_rs);
353	}
354	}
355		410
356	{	411	{
357	dSP;	412	dSP;
358	CV *cv;	413	CV *cv;
359		414
360	/* now do the ugly restore mess */	415	/* now do the ugly restore mess */
361	while ((cv = (CV *)POPs))	416	while (expect_true (cv = (CV *)POPs))
362	{	417	{
363	put_padlist (cv); /* mark this padlist as available */	418	put_padlist (aTHX_ cv); /* mark this padlist as available */
364	CvDEPTH (cv) = PTR2IV (POPs);	419	CvDEPTH (cv) = PTR2IV (POPs);
365	CvPADLIST (cv) = (AV *)POPs;	420	CvPADLIST (cv) = (AV *)POPs;
366	}	421	}
367		422
368	PUTBACK;	423	PUTBACK;
369	}	424	}
370	assert (!PL_comppad || AvARRAY (PL_comppad));//D
371	}	425	}
372		426
373	static void	427	static void
374	save_perl (Coro__State c)	428	save_perl (pTHX_ Coro__State c)
375	{	429	{
376	assert (!PL_comppad || AvARRAY (PL_comppad));//D
377	{	430	{
378	dSP;	431	dSP;
379	I32 cxix = cxstack_ix;	432	I32 cxix = cxstack_ix;
380	PERL_CONTEXT *ccstk = cxstack;	433	PERL_CONTEXT *ccstk = cxstack;
381	PERL_SI *top_si = PL_curstackinfo;	434	PERL_SI *top_si = PL_curstackinfo;
…		…
383	/*	436	/*
384	* the worst thing you can imagine happens first - we have to save	437	* the worst thing you can imagine happens first - we have to save
385	* (and reinitialize) all cv's in the whole callchain :(	438	* (and reinitialize) all cv's in the whole callchain :(
386	*/	439	*/
387		440
388	EXTEND (SP, 3 + 1);
389	PUSHs (Nullsv);	441	XPUSHs (Nullsv);
390	/* this loop was inspired by pp_caller */	442	/* this loop was inspired by pp_caller */
391	for (;;)	443	for (;;)
392	{	444	{
393	while (cxix >= 0)	445	while (expect_true (cxix >= 0))
394	{	446	{
395	PERL_CONTEXT *cx = &ccstk[cxix--];	447	PERL_CONTEXT *cx = &ccstk[cxix--];
396		448
397	if (CxTYPE (cx) == CXt_SUB)	449	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
398	{	450	{
399	CV *cv = cx->blk_sub.cv;	451	CV *cv = cx->blk_sub.cv;
400		452
401	if (CvDEPTH (cv))	453	if (expect_true (CvDEPTH (cv)))
402	{	454	{
403	EXTEND (SP, 3);	455	EXTEND (SP, 3);
404	PUSHs ((SV *)CvPADLIST (cv));	456	PUSHs ((SV *)CvPADLIST (cv));
405	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	457	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
406	PUSHs ((SV *)cv);	458	PUSHs ((SV *)cv);
407		459
408	CvDEPTH (cv) = 0;	460	CvDEPTH (cv) = 0;
409	get_padlist (cv);	461	get_padlist (aTHX_ cv);
410	}	462	}
411	}	463	}
412	}	464	}
413		465
414	if (top_si->si_type == PERLSI_MAIN)	466	if (expect_true (top_si->si_type == PERLSI_MAIN))
415	break;	467	break;
416		468
417	top_si = top_si->si_prev;	469	top_si = top_si->si_prev;
418	ccstk = top_si->si_cxstack;	470	ccstk = top_si->si_cxstack;
419	cxix = top_si->si_cxix;	471	cxix = top_si->si_cxix;
420	}	472	}
421		473
422	PUTBACK;	474	PUTBACK;
423	}	475	}
424		476
425	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	477	c->defav = GvAV (PL_defgv);
426	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	478	c->defsv = DEFSV;
427	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	479	c->errsv = ERRSV;
428	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	480	c->irssv_sv = GvSV (irsgv);
429		481
430	#define VAR(name,type)c->name = PL_ ## name;	482	#define VAR(name,type)c->name = PL_ ## name;
431	# include "state.h"	483	# include "state.h"
432	#undef VAR	484	#undef VAR
433	}	485	}
…		…
440	*/	492	*/
441	#if CORO_PREFER_PERL_FUNCTIONS	493	#if CORO_PREFER_PERL_FUNCTIONS
442	# define coro_init_stacks init_stacks	494	# define coro_init_stacks init_stacks
443	#else	495	#else
444	static void	496	static void
445	coro_init_stacks ()	497	coro_init_stacks (pTHX)
446	{	498	{
447	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	499	PL_curstackinfo = new_stackinfo(64, 6);
448	PL_curstackinfo->si_type = PERLSI_MAIN;	500	PL_curstackinfo->si_type = PERLSI_MAIN;
449	PL_curstack = PL_curstackinfo->si_stack;	501	PL_curstack = PL_curstackinfo->si_stack;
450	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	502	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
451		503
452	PL_stack_base = AvARRAY(PL_curstack);	504	PL_stack_base = AvARRAY(PL_curstack);
453	PL_stack_sp = PL_stack_base;	505	PL_stack_sp = PL_stack_base;
454	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	506	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
455		507
456	New(50,PL_tmps_stack,128,SV*);	508	New(50,PL_tmps_stack,64,SV*);
457	PL_tmps_floor = -1;	509	PL_tmps_floor = -1;
458	PL_tmps_ix = -1;	510	PL_tmps_ix = -1;
459	PL_tmps_max = 128;	511	PL_tmps_max = 64;
460		512
461	New(54,PL_markstack,32,I32);	513	New(54,PL_markstack,16,I32);
462	PL_markstack_ptr = PL_markstack;	514	PL_markstack_ptr = PL_markstack;
463	PL_markstack_max = PL_markstack + 32;	515	PL_markstack_max = PL_markstack + 16;
464		516
465	#ifdef SET_MARK_OFFSET	517	#ifdef SET_MARK_OFFSET
466	SET_MARK_OFFSET;	518	SET_MARK_OFFSET;
467	#endif	519	#endif
468		520
469	New(54,PL_scopestack,32,I32);	521	New(54,PL_scopestack,16,I32);
470	PL_scopestack_ix = 0;	522	PL_scopestack_ix = 0;
471	PL_scopestack_max = 32;	523	PL_scopestack_max = 16;
472		524
473	New(54,PL_savestack,64,ANY);	525	New(54,PL_savestack,64,ANY);
474	PL_savestack_ix = 0;	526	PL_savestack_ix = 0;
475	PL_savestack_max = 64;	527	PL_savestack_max = 64;
476		528
477	#if !PERL_VERSION_ATLEAST (5,9,0)	529	#if !PERL_VERSION_ATLEAST (5,9,0)
478	New(54,PL_retstack,16,OP*);	530	New(54,PL_retstack,4,OP*);
479	PL_retstack_ix = 0;	531	PL_retstack_ix = 0;
480	PL_retstack_max = 16;	532	PL_retstack_max = 4;
481	#endif	533	#endif
482	}	534	}
483	#endif	535	#endif
484		536
485	/*	537	/*
486	* destroy the stacks, the callchain etc...	538	* destroy the stacks, the callchain etc...
487	*/	539	*/
488	static void	540	static void
489	coro_destroy_stacks ()	541	coro_destroy_stacks (pTHX)
490	{	542	{
491	if (!IN_DESTRUCT)
492	{
493	/* restore all saved variables and stuff */
494	LEAVE_SCOPE (0);
495	assert (PL_tmps_floor == -1);
496
497	/* free all temporaries */
498	FREETMPS;
499	assert (PL_tmps_ix == -1);
500
501	/* unwind all extra stacks */
502	POPSTACK_TO (PL_mainstack);
503
504	/* unwind main stack */
505	dounwind (-1);
506	}
507
508	while (PL_curstackinfo->si_next)	543	while (PL_curstackinfo->si_next)
509	PL_curstackinfo = PL_curstackinfo->si_next;	544	PL_curstackinfo = PL_curstackinfo->si_next;
510		545
511	while (PL_curstackinfo)	546	while (PL_curstackinfo)
512	{	547	{
…		…
527	#if !PERL_VERSION_ATLEAST (5,9,0)	562	#if !PERL_VERSION_ATLEAST (5,9,0)
528	Safefree (PL_retstack);	563	Safefree (PL_retstack);
529	#endif	564	#endif
530	}	565	}
531		566
		567	static size_t
		568	coro_rss (pTHX_ struct coro *coro)
		569	{
		570	size_t rss = sizeof (*coro);
		571
		572	if (coro->mainstack)
		573	{
		574	if (coro->flags & CF_RUNNING)
		575	{
		576	#define VAR(name,type)coro->name = PL_ ## name;
		577	# include "state.h"
		578	#undef VAR
		579	}
		580
		581	rss += sizeof (coro->curstackinfo);
		582	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
		583	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		584	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);
		585	rss += coro->tmps_max * sizeof (SV *);
		586	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);
		587	rss += coro->scopestack_max * sizeof (I32);
		588	rss += coro->savestack_max * sizeof (ANY);
		589
		590	#if !PERL_VERSION_ATLEAST (5,9,0)
		591	rss += coro->retstack_max * sizeof (OP *);
		592	#endif
		593	}
		594
		595	return rss;
		596	}
		597
532	/** coroutine stack handling ************************************************/	598	/** coroutine stack handling ************************************************/
533		599
534	static void	600	static void
535	setup_coro (struct coro *coro)	601	coro_setup (pTHX_ struct coro *coro)
536	{	602	{
537	/*	603	/*
538	* emulate part of the perl startup here.	604	* emulate part of the perl startup here.
539	*/	605	*/
540
541	coro_init_stacks ();	606	coro_init_stacks (aTHX);
542		607
		608	PL_runops = RUNOPS_DEFAULT;
543	PL_curcop = &PL_compiling;	609	PL_curcop = &PL_compiling;
544	PL_in_eval = EVAL_NULL;	610	PL_in_eval = EVAL_NULL;
545	PL_comppad = 0;	611	PL_comppad = 0;
546	PL_curpm = 0;	612	PL_curpm = 0;
547	PL_localizing = 0;	613	PL_localizing = 0;
548	PL_dirty = 0;	614	PL_dirty = 0;
549	PL_restartop = 0;	615	PL_restartop = 0;
		616
		617	GvSV (PL_defgv) = newSV (0);
		618	GvAV (PL_defgv) = coro->args; coro->args = 0;
		619	GvSV (PL_errgv) = newSV (0);
		620	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		621	PL_rs = newSVsv (GvSV (irsgv));
		622	PL_defoutgv = SvREFCNT_inc (stdoutgv);
		623
		624	ENTER; /* necessary e.g. for dounwind */
550		625
551	{	626	{
552	dSP;	627	dSP;
553	LOGOP myop;	628	LOGOP myop;
554		629
555	SvREFCNT_dec (GvAV (PL_defgv));
556	GvAV (PL_defgv) = coro->args; coro->args = 0;
557
558	Zero (&myop, 1, LOGOP);	630	Zero (&myop, 1, LOGOP);
559	myop.op_next = Nullop;	631	myop.op_next = Nullop;
560	myop.op_flags = OPf_WANT_VOID;	632	myop.op_flags = OPf_WANT_VOID;
561		633
562	PUSHMARK (SP);	634	PUSHMARK (SP);
563	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	635	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
564	PUTBACK;	636	PUTBACK;
565	PL_op = (OP *)&myop;	637	PL_op = (OP *)&myop;
566	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	638	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
567	SPAGAIN;	639	SPAGAIN;
568	}	640	}
569
570	ENTER; /* necessary e.g. for dounwind */
571	}	641	}
572		642
573	static void	643	static void
		644	coro_destroy (pTHX_ struct coro *coro)
		645	{
		646	if (!IN_DESTRUCT)
		647	{
		648	/* restore all saved variables and stuff */
		649	LEAVE_SCOPE (0);
		650	assert (PL_tmps_floor == -1);
		651
		652	/* free all temporaries */
		653	FREETMPS;
		654	assert (PL_tmps_ix == -1);
		655
		656	/* unwind all extra stacks */
		657	POPSTACK_TO (PL_mainstack);
		658
		659	/* unwind main stack */
		660	dounwind (-1);
		661	}
		662
		663	SvREFCNT_dec (GvSV (PL_defgv));
		664	SvREFCNT_dec (GvAV (PL_defgv));
		665	SvREFCNT_dec (GvSV (PL_errgv));
		666	SvREFCNT_dec (PL_defoutgv);
		667	SvREFCNT_dec (PL_rs);
		668	SvREFCNT_dec (GvSV (irsgv));
		669
		670	SvREFCNT_dec (coro->saved_deffh);
		671	//SvREFCNT_dec (coro->throw);
		672
		673	coro_destroy_stacks (aTHX);
		674	}
		675
		676	static void
574	free_coro_mortal ()	677	free_coro_mortal (pTHX)
575	{	678	{
576	if (coro_mortal)	679	if (expect_true (coro_mortal))
577	{	680	{
578	SvREFCNT_dec (coro_mortal);	681	SvREFCNT_dec (coro_mortal);
579	coro_mortal = 0;	682	coro_mortal = 0;
580	}	683	}
581	}	684	}
582		685
		686	static int
		687	runops_trace (pTHX)
		688	{
		689	COP *oldcop = 0;
		690	int oldcxix = -2;
		691	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		692	coro_cctx *cctx = coro->cctx;
		693
		694	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		695	{
		696	PERL_ASYNC_CHECK ();
		697
		698	if (cctx->flags & CC_TRACE_ALL)
		699	{
		700	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		701	{
		702	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		703	SV **bot, **top;
		704	AV *av = newAV (); /* return values */
		705	SV **cb;
		706	dSP;
		707
		708	GV *gv = CvGV (cx->blk_sub.cv);
		709	SV *fullname = sv_2mortal (newSV (0));
		710	if (isGV (gv))
		711	gv_efullname3 (fullname, gv, 0);
		712
		713	bot = PL_stack_base + cx->blk_oldsp + 1;
		714	top = cx->blk_gimme == G_ARRAY ? SP + 1
		715	: cx->blk_gimme == G_SCALAR ? bot + 1
		716	: bot;
		717
		718	av_extend (av, top - bot);
		719	while (bot < top)
		720	av_push (av, SvREFCNT_inc (*bot++));
		721
		722	PL_runops = RUNOPS_DEFAULT;
		723	ENTER;
		724	SAVETMPS;
		725	EXTEND (SP, 3);
		726	PUSHMARK (SP);
		727	PUSHs (&PL_sv_no);
		728	PUSHs (fullname);
		729	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		730	PUTBACK;
		731	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		732	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		733	SPAGAIN;
		734	FREETMPS;
		735	LEAVE;
		736	PL_runops = runops_trace;
		737	}
		738
		739	if (oldcop != PL_curcop)
		740	{
		741	oldcop = PL_curcop;
		742
		743	if (PL_curcop != &PL_compiling)
		744	{
		745	SV **cb;
		746
		747	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		748	{
		749	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		750
		751	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		752	{
		753	runops_proc_t old_runops = PL_runops;
		754	dSP;
		755	GV *gv = CvGV (cx->blk_sub.cv);
		756	SV *fullname = sv_2mortal (newSV (0));
		757
		758	if (isGV (gv))
		759	gv_efullname3 (fullname, gv, 0);
		760
		761	PL_runops = RUNOPS_DEFAULT;
		762	ENTER;
		763	SAVETMPS;
		764	EXTEND (SP, 3);
		765	PUSHMARK (SP);
		766	PUSHs (&PL_sv_yes);
		767	PUSHs (fullname);
		768	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		769	PUTBACK;
		770	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
		771	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		772	SPAGAIN;
		773	FREETMPS;
		774	LEAVE;
		775	PL_runops = runops_trace;
		776	}
		777
		778	oldcxix = cxstack_ix;
		779	}
		780
		781	if (cctx->flags & CC_TRACE_LINE)
		782	{
		783	dSP;
		784
		785	PL_runops = RUNOPS_DEFAULT;
		786	ENTER;
		787	SAVETMPS;
		788	EXTEND (SP, 3);
		789	PL_runops = RUNOPS_DEFAULT;
		790	PUSHMARK (SP);
		791	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		792	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		793	PUTBACK;
		794	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
		795	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		796	SPAGAIN;
		797	FREETMPS;
		798	LEAVE;
		799	PL_runops = runops_trace;
		800	}
		801	}
		802	}
		803	}
		804	}
		805
		806	TAINT_NOT;
		807	return 0;
		808	}
		809
583	/* inject a fake call to Coro::State::_cctx_init into the execution */	810	/* inject a fake call to Coro::State::_cctx_init into the execution */
		811	/* _cctx_init should be careful, as it could be called at almost any time */
		812	/* during execution of a perl program */
584	static void NOINLINE	813	static void NOINLINE
585	prepare_cctx (coro_cctx *cctx)	814	prepare_cctx (pTHX_ coro_cctx *cctx)
586	{	815	{
587	dSP;	816	dSP;
588	LOGOP myop;	817	LOGOP myop;
		818
		819	PL_top_env = &PL_start_env;
		820
		821	if (cctx->flags & CC_TRACE)
		822	PL_runops = runops_trace;
589		823
590	Zero (&myop, 1, LOGOP);	824	Zero (&myop, 1, LOGOP);
591	myop.op_next = PL_op;	825	myop.op_next = PL_op;
592	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	826	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
593		827
…		…
599	PL_op = (OP *)&myop;	833	PL_op = (OP *)&myop;
600	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	834	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
601	SPAGAIN;	835	SPAGAIN;
602	}	836	}
603		837
		838	/*
		839	* this is a _very_ stripped down perl interpreter ;)
		840	*/
604	static void	841	static void
605	coro_run (void *arg)	842	coro_run (void *arg)
606	{	843	{
		844	dTHX;
		845
607	/* coro_run is the alternative tail of transfer(), so unlock here. */	846	/* coro_run is the alternative tail of transfer(), so unlock here. */
608	UNLOCK;	847	UNLOCK;
609		848
610	/*	849	/* we now skip the entersub that lead to transfer() */
611	* this is a _very_ stripped down perl interpreter ;)	850	PL_op = PL_op->op_next;
612	*/
613	PL_top_env = &PL_start_env;
614		851
615	/* inject call to cctx_init */	852	/* inject a fake subroutine call to cctx_init */
616	prepare_cctx ((coro_cctx *)arg);	853	prepare_cctx (aTHX_ (coro_cctx *)arg);
617		854
618	/* somebody will hit me for both perl_run and PL_restartop */	855	/* somebody or something will hit me for both perl_run and PL_restartop */
619	PL_restartop = PL_op;	856	PL_restartop = PL_op;
620	perl_run (PL_curinterp);	857	perl_run (PL_curinterp);
621		858
622	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	859	/*
623	abort ();	860	* If perl-run returns we assume exit() was being called or the coro
		861	* fell off the end, which seems to be the only valid (non-bug)
		862	* reason for perl_run to return. We try to exit by jumping to the
		863	* bootstrap-time "top" top_env, as we cannot restore the "main"
		864	* coroutine as Coro has no such concept
		865	*/
		866	PL_top_env = main_top_env;
		867	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
624	}	868	}
625		869
626	static coro_cctx *	870	static coro_cctx *
627	cctx_new ()	871	cctx_new ()
628	{	872	{
629	coro_cctx *cctx;	873	coro_cctx *cctx;
		874	void *stack_start;
		875	size_t stack_size;
630		876
631	++cctx_count;	877	++cctx_count;
632		878
633	Newz (0, cctx, 1, coro_cctx);	879	Newz (0, cctx, 1, coro_cctx);
634		880
635	#if HAVE_MMAP	881	#if HAVE_MMAP
636		882
637	cctx->ssize = ((CORO_STACKSIZE * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	883	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
638	/* mmap supposedly does allocate-on-write for us */	884	/* mmap supposedly does allocate-on-write for us */
639	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	885	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
640		886
641	if (cctx->sptr != (void *)-1)	887	if (cctx->sptr != (void *)-1)
642	{	888	{
643	# if CORO_STACKGUARD	889	# if CORO_STACKGUARD
644	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	890	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
645	# endif	891	# endif
646	REGISTER_STACK (
647	cctx,
648	CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr,	892	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
649	cctx->ssize + (char *)cctx->sptr	893	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
650	);	894	cctx->flags |= CC_MAPPED;
651
652	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, cctx->ssize);
653	}	895	}
654	else	896	else
655	#endif	897	#endif
656	{	898	{
657	cctx->ssize = -CORO_STACKSIZE * (long)sizeof (long);	899	cctx->ssize = coro_stacksize * (long)sizeof (long);
658	New (0, cctx->sptr, CORO_STACKSIZE, long);	900	New (0, cctx->sptr, coro_stacksize, long);
659		901
660	if (!cctx->sptr)	902	if (!cctx->sptr)
661	{	903	{
662	perror ("FATAL: unable to allocate stack for coroutine");	904	perror ("FATAL: unable to allocate stack for coroutine");
663	_exit (EXIT_FAILURE);	905	_exit (EXIT_FAILURE);
664	}	906	}
665		907
666	REGISTER_STACK (	908	stack_start = cctx->sptr;
667	cctx,	909	stack_size = cctx->ssize;
668	(char *)cctx->sptr,	910	}
669	(char *)cctx->sptr - cctx->ssize
670	);
671		911
		912	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
672	coro_create (&cctx->cctx, coro_run, (void *)cctx, cctx->sptr, -cctx->ssize);	913	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);
673	}
674		914
675	return cctx;	915	return cctx;
676	}	916	}
677		917
678	static void	918	static void
…		…
686	#if CORO_USE_VALGRIND	926	#if CORO_USE_VALGRIND
687	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	927	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
688	#endif	928	#endif
689		929
690	#if HAVE_MMAP	930	#if HAVE_MMAP
691	if (cctx->ssize > 0)	931	if (cctx->flags & CC_MAPPED)
692	munmap (cctx->sptr, cctx->ssize);	932	munmap (cctx->sptr, cctx->ssize);
693	else	933	else
694	#endif	934	#endif
695	Safefree (cctx->sptr);	935	Safefree (cctx->sptr);
696		936
697	Safefree (cctx);	937	Safefree (cctx);
698	}	938	}
699		939
		940	/* wether this cctx should be destructed */
		941	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		942
700	static coro_cctx *	943	static coro_cctx *
701	cctx_get ()	944	cctx_get (pTHX)
702	{	945	{
703	coro_cctx *cctx;	946	while (expect_true (cctx_first))
704
705	if (cctx_first)
706	{	947	{
707	cctx = cctx_first;	948	coro_cctx *cctx = cctx_first;
708	cctx_first = cctx->next;	949	cctx_first = cctx->next;
709	--cctx_idle;	950	--cctx_idle;
710	}	951
711	else	952	if (expect_true (!CCTX_EXPIRED (cctx)))
712	{	953	return cctx;
713	cctx = cctx_new ();	954
714	PL_op = PL_op->op_next;	955	cctx_destroy (cctx);
715	}	956	}
716		957
717	return cctx;	958	return cctx_new ();
718	}	959	}
719		960
720	static void	961	static void
721	cctx_put (coro_cctx *cctx)	962	cctx_put (coro_cctx *cctx)
722	{	963	{
723	/* free another cctx if overlimit */	964	/* free another cctx if overlimit */
724	if (cctx_idle >= MAX_IDLE_CCTX)	965	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
725	{	966	{
726	coro_cctx *first = cctx_first;	967	coro_cctx *first = cctx_first;
727	cctx_first = first->next;	968	cctx_first = first->next;
728	--cctx_idle;	969	--cctx_idle;
729		970
730	assert (!first->inuse);
731	cctx_destroy (first);	971	cctx_destroy (first);
732	}	972	}
733		973
734	++cctx_idle;	974	++cctx_idle;
735	cctx->next = cctx_first;	975	cctx->next = cctx_first;
736	cctx_first = cctx;	976	cctx_first = cctx;
737	}	977	}
738		978
739	/** coroutine switching *****************************************************/	979	/** coroutine switching *****************************************************/
740		980
741	/* never call directly, always through the coro_state_transfer global variable */	981	static void
		982	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		983	{
		984	if (expect_true (prev != next))
		985	{
		986	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		987	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		988
		989	if (expect_false (next->flags & CF_RUNNING))
		990	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		991
		992	if (expect_false (next->flags & CF_DESTROYED))
		993	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		994
		995	if (expect_false (PL_lex_state != LEX_NOTPARSING))
		996	croak ("Coro::State::transfer called while parsing, but this is not supported");
		997	}
		998	}
		999
		1000	/* always use the TRANSFER macro */
742	static void NOINLINE	1001	static void NOINLINE
743	transfer (struct coro *prev, struct coro *next)	1002	transfer (pTHX_ struct coro *prev, struct coro *next)
744	{	1003	{
745	dSTACKLEVEL;	1004	dSTACKLEVEL;
746		1005
747	/* sometimes transfer is only called to set idle_sp */	1006	/* sometimes transfer is only called to set idle_sp */
748	if (!next)	1007	if (expect_false (!next))
749	{	1008	{
750	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1009	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
751	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1010	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
752	}	1011	}
753	else if (prev != next)	1012	else if (expect_true (prev != next))
754	{	1013	{
755	coro_cctx *prev__cctx;	1014	coro_cctx *prev__cctx;
756		1015
757	if (prev->flags & CF_NEW)	1016	if (expect_false (prev->flags & CF_NEW))
758	{	1017	{
759	/* create a new empty context */	1018	/* create a new empty context */
760	Newz (0, prev->cctx, 1, coro_cctx);	1019	Newz (0, prev->cctx, 1, coro_cctx);
761	prev->cctx->inuse = 1;
762	prev->flags &= ~CF_NEW;	1020	prev->flags &= ~CF_NEW;
763	prev->flags |= CF_RUNNING;	1021	prev->flags |= CF_RUNNING;
764	}	1022	}
765		1023
766	/*TODO: must not croak here */
767	if (!prev->flags & CF_RUNNING)
768	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
769
770	if (next->flags & CF_RUNNING)
771	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
772
773	if (next->flags & CF_DESTROYED)
774	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
775
776	prev->flags &= ~CF_RUNNING;	1024	prev->flags &= ~CF_RUNNING;
777	next->flags |= CF_RUNNING;	1025	next->flags |= CF_RUNNING;
778		1026
779	LOCK;	1027	LOCK;
780		1028
781	if (next->flags & CF_NEW)	1029	if (expect_false (next->flags & CF_NEW))
782	{	1030	{
783	/* need to start coroutine */	1031	/* need to start coroutine */
784	next->flags &= ~CF_NEW;	1032	next->flags &= ~CF_NEW;
785	/* first get rid of the old state */	1033	/* first get rid of the old state */
786	save_perl (prev);	1034	save_perl (aTHX_ prev);
787	/* setup coroutine call */	1035	/* setup coroutine call */
788	setup_coro (next);	1036	coro_setup (aTHX_ next);
789	/* need a new stack */
790	assert (!next->cctx);
791	}	1037	}
792	else	1038	else
793	{	1039	{
794	/* coroutine already started */	1040	/* coroutine already started */
795	save_perl (prev);	1041	save_perl (aTHX_ prev);
796	load_perl (next);	1042	load_perl (aTHX_ next);
797	}	1043	}
798		1044
799	prev__cctx = prev->cctx;	1045	prev__cctx = prev->cctx;
800		1046
801	/* possibly "free" the cctx */	1047	/* possibly "free" the cctx */
802	if (prev__cctx->idle_sp == STACKLEVEL)	1048	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
803	{	1049	{
804	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1050	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
805	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1051	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
806		1052
807	prev->cctx = 0;	1053	prev->cctx = 0;
808		1054
		1055	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1056	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1057	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1058	next->cctx = cctx_get (aTHX);
		1059
809	cctx_put (prev__cctx);	1060	cctx_put (prev__cctx);
810	prev__cctx->inuse = 0;
811	}	1061	}
812		1062
		1063	++next->usecount;
		1064
813	if (!next->cctx)	1065	if (expect_true (!next->cctx))
814	{
815	next->cctx = cctx_get ();	1066	next->cctx = cctx_get (aTHX);
816	assert (!next->cctx->inuse);
817	next->cctx->inuse = 1;
818	}
819		1067
820	if (prev__cctx != next->cctx)	1068	if (expect_false (prev__cctx != next->cctx))
821	{	1069	{
822	prev__cctx->top_env = PL_top_env;	1070	prev__cctx->top_env = PL_top_env;
823	PL_top_env = next->cctx->top_env;	1071	PL_top_env = next->cctx->top_env;
824	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1072	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
825	}	1073	}
826		1074
827	free_coro_mortal ();	1075	free_coro_mortal (aTHX);
828	UNLOCK;	1076	UNLOCK;
829	}	1077	}
830	}	1078	}
831		1079
832	struct transfer_args	1080	struct transfer_args
833	{	1081	{
834	struct coro *prev, *next;	1082	struct coro *prev, *next;
835	};	1083	};
836		1084
837	#define TRANSFER(ta) transfer ((ta).prev, (ta).next)	1085	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1086	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
838		1087
839	/** high level stuff ********************************************************/	1088	/** high level stuff ********************************************************/
840		1089
841	static int	1090	static int
842	coro_state_destroy (struct coro *coro)	1091	coro_state_destroy (pTHX_ struct coro *coro)
843	{	1092	{
844	if (coro->flags & CF_DESTROYED)	1093	if (coro->flags & CF_DESTROYED)
845	return 0;	1094	return 0;
846		1095
847	coro->flags |= CF_DESTROYED;	1096	coro->flags |= CF_DESTROYED;
…		…
859		1108
860	if (coro->mainstack && coro->mainstack != main_mainstack)	1109	if (coro->mainstack && coro->mainstack != main_mainstack)
861	{	1110	{
862	struct coro temp;	1111	struct coro temp;
863		1112
864	assert (!(coro->flags & CF_RUNNING));
865
866	Zero (&temp, 1, struct coro);
867	temp.save = CORO_SAVE_ALL;
868
869	if (coro->flags & CF_RUNNING)	1113	if (coro->flags & CF_RUNNING)
870	croak ("FATAL: tried to destroy currently running coroutine");	1114	croak ("FATAL: tried to destroy currently running coroutine");
871		1115
872	save_perl (&temp);	1116	save_perl (aTHX_ &temp);
873	load_perl (coro);	1117	load_perl (aTHX_ coro);
874		1118
875	coro_destroy_stacks ();	1119	coro_destroy (aTHX_ coro);
876		1120
877	load_perl (&temp); /* this will get rid of defsv etc.. */	1121	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */
878		1122
879	coro->mainstack = 0;	1123	coro->mainstack = 0;
880	}	1124	}
881		1125
882	cctx_destroy (coro->cctx);	1126	cctx_destroy (coro->cctx);
883	SvREFCNT_dec (coro->args);	1127	SvREFCNT_dec (coro->args);
884		1128
		1129	if (coro->next) coro->next->prev = coro->prev;
		1130	if (coro->prev) coro->prev->next = coro->next;
		1131	if (coro == coro_first) coro_first = coro->next;
		1132
885	return 1;	1133	return 1;
886	}	1134	}
887		1135
888	static int	1136	static int
889	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1137	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
890	{	1138	{
891	struct coro *coro = (struct coro *)mg->mg_ptr;	1139	struct coro *coro = (struct coro *)mg->mg_ptr;
892	mg->mg_ptr = 0;	1140	mg->mg_ptr = 0;
893		1141
		1142	coro->hv = 0;
		1143
894	if (--coro->refcnt < 0)	1144	if (--coro->refcnt < 0)
895	{	1145	{
896	coro_state_destroy (coro);	1146	coro_state_destroy (aTHX_ coro);
897	Safefree (coro);	1147	Safefree (coro);
898	}	1148	}
899		1149
900	return 0;	1150	return 0;
901	}	1151	}
…		…
919	#else	1169	#else
920	# define MGf_DUP 0	1170	# define MGf_DUP 0
921	#endif	1171	#endif
922	};	1172	};
923		1173
924	static struct coro *
925	SvSTATE (SV *coro)
926	{
927	HV *stash;
928	MAGIC *mg;
929
930	if (SvROK (coro))
931	coro = SvRV (coro);
932
933	stash = SvSTASH (coro);
934	if (stash != coro_stash && stash != coro_state_stash)
935	{
936	/* very slow, but rare, check */
937	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
938	croak ("Coro::State object required");
939	}
940
941	mg = CORO_MAGIC (coro);
942	return (struct coro *)mg->mg_ptr;
943	}
944
945	static void	1174	static void
946	prepare_transfer (struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1175	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
947	{	1176	{
948	ta->prev = SvSTATE (prev_sv);	1177	ta->prev = SvSTATE (prev_sv);
949	ta->next = SvSTATE (next_sv);	1178	ta->next = SvSTATE (next_sv);
		1179	TRANSFER_CHECK (*ta);
950	}	1180	}
951		1181
952	static void	1182	static void
953	api_transfer (SV *prev_sv, SV *next_sv)	1183	api_transfer (SV *prev_sv, SV *next_sv)
954	{	1184	{
		1185	dTHX;
955	struct transfer_args ta;	1186	struct transfer_args ta;
956		1187
957	prepare_transfer (&ta, prev_sv, next_sv);	1188	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
958	TRANSFER (ta);	1189	TRANSFER (ta);
959	}	1190	}
960		1191
961	static int
962	api_save (SV *coro_sv, int new_save)
963	{
964	struct coro *coro = SvSTATE (coro_sv);
965	int old_save = coro->save;
966
967	if (new_save >= 0)
968	coro->save = new_save;
969
970	return old_save;
971	}
972
973	/** Coro ********************************************************************/	1192	/** Coro ********************************************************************/
974		1193
975	static void	1194	static void
976	coro_enq (SV *coro_sv)	1195	coro_enq (pTHX_ SV *coro_sv)
977	{	1196	{
978	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1197	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
979	}	1198	}
980		1199
981	static SV *	1200	static SV *
982	coro_deq (int min_prio)	1201	coro_deq (pTHX_ int min_prio)
983	{	1202	{
984	int prio = PRIO_MAX - PRIO_MIN;	1203	int prio = PRIO_MAX - PRIO_MIN;
985		1204
986	min_prio -= PRIO_MIN;	1205	min_prio -= PRIO_MIN;
987	if (min_prio < 0)	1206	if (min_prio < 0)
…		…
995	}	1214	}
996		1215
997	static int	1216	static int
998	api_ready (SV *coro_sv)	1217	api_ready (SV *coro_sv)
999	{	1218	{
		1219	dTHX;
1000	struct coro *coro;	1220	struct coro *coro;
1001		1221
1002	if (SvROK (coro_sv))	1222	if (SvROK (coro_sv))
1003	coro_sv = SvRV (coro_sv);	1223	coro_sv = SvRV (coro_sv);
1004		1224
…		…
1008	return 0;	1228	return 0;
1009		1229
1010	coro->flags |= CF_READY;	1230	coro->flags |= CF_READY;
1011		1231
1012	LOCK;	1232	LOCK;
1013	coro_enq (SvREFCNT_inc (coro_sv));	1233	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));
1014	++coro_nready;	1234	++coro_nready;
1015	UNLOCK;	1235	UNLOCK;
1016		1236
1017	return 1;	1237	return 1;
1018	}	1238	}
1019		1239
1020	static int	1240	static int
1021	api_is_ready (SV *coro_sv)	1241	api_is_ready (SV *coro_sv)
1022	{	1242	{
		1243	dTHX;
1023	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1244	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1024	}	1245	}
1025		1246
1026	static void	1247	static void
1027	prepare_schedule (struct transfer_args *ta)	1248	prepare_schedule (pTHX_ struct transfer_args *ta)
1028	{	1249	{
1029	SV *prev_sv, *next_sv;	1250	SV *prev_sv, *next_sv;
1030		1251
1031	for (;;)	1252	for (;;)
1032	{	1253	{
1033	LOCK;	1254	LOCK;
1034	next_sv = coro_deq (PRIO_MIN);	1255	next_sv = coro_deq (aTHX_ PRIO_MIN);
1035		1256
1036	/* nothing to schedule: call the idle handler */	1257	/* nothing to schedule: call the idle handler */
1037	if (!next_sv)	1258	if (expect_false (!next_sv))
1038	{	1259	{
1039	dSP;	1260	dSP;
1040	UNLOCK;	1261	UNLOCK;
1041		1262
1042	ENTER;	1263	ENTER;
…		…
1052	}	1273	}
1053		1274
1054	ta->next = SvSTATE (next_sv);	1275	ta->next = SvSTATE (next_sv);
1055		1276
1056	/* cannot transfer to destroyed coros, skip and look for next */	1277	/* cannot transfer to destroyed coros, skip and look for next */
1057	if (ta->next->flags & CF_DESTROYED)	1278	if (expect_false (ta->next->flags & CF_DESTROYED))
1058	{	1279	{
1059	UNLOCK;	1280	UNLOCK;
1060	SvREFCNT_dec (next_sv);	1281	SvREFCNT_dec (next_sv);
1061	/* coro_nready is already taken care of by destroy */	1282	/* coro_nready is already taken care of by destroy */
1062	continue;	1283	continue;
…		…
1067	break;	1288	break;
1068	}	1289	}
1069		1290
1070	/* free this only after the transfer */	1291	/* free this only after the transfer */
1071	prev_sv = SvRV (coro_current);	1292	prev_sv = SvRV (coro_current);
1072	SvRV_set (coro_current, next_sv);
1073	ta->prev = SvSTATE (prev_sv);	1293	ta->prev = SvSTATE (prev_sv);
1074		1294	TRANSFER_CHECK (*ta);
1075	assert (ta->next->flags & CF_READY);	1295	assert (ta->next->flags & CF_READY);
1076	ta->next->flags &= ~CF_READY;	1296	ta->next->flags &= ~CF_READY;
		1297	SvRV_set (coro_current, next_sv);
1077		1298
1078	LOCK;	1299	LOCK;
1079	free_coro_mortal ();	1300	free_coro_mortal (aTHX);
1080	coro_mortal = prev_sv;	1301	coro_mortal = prev_sv;
1081	UNLOCK;	1302	UNLOCK;
1082	}	1303	}
1083		1304
1084	static void	1305	static void
1085	prepare_cede (struct transfer_args *ta)	1306	prepare_cede (pTHX_ struct transfer_args *ta)
1086	{	1307	{
1087	api_ready (coro_current);	1308	api_ready (coro_current);
1088	prepare_schedule (ta);	1309	prepare_schedule (aTHX_ ta);
1089	}	1310	}
1090		1311
1091	static int	1312	static int
1092	prepare_cede_notself (struct transfer_args *ta)	1313	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1093	{	1314	{
1094	if (coro_nready)	1315	if (coro_nready)
1095	{	1316	{
1096	SV *prev = SvRV (coro_current);	1317	SV *prev = SvRV (coro_current);
1097	prepare_schedule (ta);	1318	prepare_schedule (aTHX_ ta);
1098	api_ready (prev);	1319	api_ready (prev);
1099	return 1;	1320	return 1;
1100	}	1321	}
1101	else	1322	else
1102	return 0;	1323	return 0;
1103	}	1324	}
1104		1325
1105	static void	1326	static void
1106	api_schedule (void)	1327	api_schedule (void)
1107	{	1328	{
		1329	dTHX;
1108	struct transfer_args ta;	1330	struct transfer_args ta;
1109		1331
1110	prepare_schedule (&ta);	1332	prepare_schedule (aTHX_ &ta);
1111	TRANSFER (ta);	1333	TRANSFER (ta);
1112	}	1334	}
1113		1335
1114	static int	1336	static int
1115	api_cede (void)	1337	api_cede (void)
1116	{	1338	{
		1339	dTHX;
1117	struct transfer_args ta;	1340	struct transfer_args ta;
1118		1341
1119	prepare_cede (&ta);	1342	prepare_cede (aTHX_ &ta);
1120		1343
1121	if (ta.prev != ta.next)	1344	if (expect_true (ta.prev != ta.next))
1122	{	1345	{
1123	TRANSFER (ta);	1346	TRANSFER (ta);
1124	return 1;	1347	return 1;
1125	}	1348	}
1126	else	1349	else
…		…
1128	}	1351	}
1129		1352
1130	static int	1353	static int
1131	api_cede_notself (void)	1354	api_cede_notself (void)
1132	{	1355	{
		1356	dTHX;
1133	struct transfer_args ta;	1357	struct transfer_args ta;
1134		1358
1135	if (prepare_cede_notself (&ta))	1359	if (prepare_cede_notself (aTHX_ &ta))
1136	{	1360	{
1137	TRANSFER (ta);	1361	TRANSFER (ta);
1138	return 1;	1362	return 1;
1139	}	1363	}
1140	else	1364	else
1141	return 0;	1365	return 0;
1142	}	1366	}
1143		1367
		1368	static void
		1369	api_trace (SV *coro_sv, int flags)
		1370	{
		1371	dTHX;
		1372	struct coro *coro = SvSTATE (coro_sv);
		1373
		1374	if (flags & CC_TRACE)
		1375	{
		1376	if (!coro->cctx)
		1377	coro->cctx = cctx_new ();
		1378	else if (!(coro->cctx->flags & CC_TRACE))
		1379	croak ("cannot enable tracing on coroutine with custom stack");
		1380
		1381	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1382	}
		1383	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1384	{
		1385	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1386
		1387	if (coro->flags & CF_RUNNING)
		1388	PL_runops = RUNOPS_DEFAULT;
		1389	else
		1390	coro->runops = RUNOPS_DEFAULT;
		1391	}
		1392	}
		1393
1144	MODULE = Coro::State PACKAGE = Coro::State	1394	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1145		1395
1146	PROTOTYPES: DISABLE	1396	PROTOTYPES: DISABLE
1147		1397
1148	BOOT:	1398	BOOT:
1149	{	1399	{
1150	#ifdef USE_ITHREADS	1400	#ifdef USE_ITHREADS
1151	MUTEX_INIT (&coro_mutex);	1401	MUTEX_INIT (&coro_mutex);
1152	#endif	1402	#endif
1153	BOOT_PAGESIZE;	1403	BOOT_PAGESIZE;
1154		1404
		1405	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1406	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1407
1155	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1408	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1156		1409
		1410	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1411	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1157	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1412	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1158	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));
1159	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1160	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1161	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1413	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1162		1414
1163	main_mainstack = PL_mainstack;	1415	main_mainstack = PL_mainstack;
		1416	main_top_env = PL_top_env;
		1417
		1418	while (main_top_env->je_prev)
		1419	main_top_env = main_top_env->je_prev;
1164		1420
1165	coroapi.ver = CORO_API_VERSION;	1421	coroapi.ver = CORO_API_VERSION;
1166	coroapi.transfer = api_transfer;	1422	coroapi.transfer = api_transfer;
1167		1423
1168	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1424	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1175	struct coro *coro;	1431	struct coro *coro;
1176	HV *hv;	1432	HV *hv;
1177	int i;	1433	int i;
1178		1434
1179	Newz (0, coro, 1, struct coro);	1435	Newz (0, coro, 1, struct coro);
1180	coro->args = newAV ();	1436	coro->args = newAV ();
1181	coro->save = CORO_SAVE_ALL;
1182	coro->flags = CF_NEW;	1437	coro->flags = CF_NEW;
1183		1438
		1439	if (coro_first) coro_first->prev = coro;
		1440	coro->next = coro_first;
		1441	coro_first = coro;
		1442
1184	hv = newHV ();	1443	coro->hv = hv = newHV ();
1185	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1444	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1186	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1445	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1187		1446
		1447	av_extend (coro->args, items - 1);
1188	for (i = 1; i < items; i++)	1448	for (i = 1; i < items; i++)
1189	av_push (coro->args, newSVsv (ST (i)));	1449	av_push (coro->args, newSVsv (ST (i)));
1190	}	1450	}
1191	OUTPUT:	1451	OUTPUT:
1192	RETVAL	1452	RETVAL
1193		1453
1194	int	1454	# these not obviously related functions are all rolled into the same xs
1195	save (SV *coro, int new_save = -1)	1455	# function to increase chances that they all will call transfer with the same
1196	CODE:	1456	# stack offset
1197	RETVAL = api_save (coro, new_save);
1198	OUTPUT:
1199	RETVAL
1200
1201	void	1457	void
1202	_set_stacklevel (...)	1458	_set_stacklevel (...)
1203	ALIAS:	1459	ALIAS:
1204	Coro::State::transfer = 1	1460	Coro::State::transfer = 1
1205	Coro::schedule = 2	1461	Coro::schedule = 2
…		…
1218		1474
1219	case 1:	1475	case 1:
1220	if (items != 2)	1476	if (items != 2)
1221	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1477	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1222		1478
1223	prepare_transfer (&ta, ST (0), ST (1));	1479	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1224	break;	1480	break;
1225		1481
1226	case 2:	1482	case 2:
1227	prepare_schedule (&ta);	1483	prepare_schedule (aTHX_ &ta);
1228	break;	1484	break;
1229		1485
1230	case 3:	1486	case 3:
1231	prepare_cede (&ta);	1487	prepare_cede (aTHX_ &ta);
1232	break;	1488	break;
1233		1489
1234	case 4:	1490	case 4:
1235	if (!prepare_cede_notself (&ta))	1491	if (!prepare_cede_notself (aTHX_ &ta))
1236	XSRETURN_EMPTY;	1492	XSRETURN_EMPTY;
1237		1493
1238	break;	1494	break;
1239	}	1495	}
1240		1496
1241	BARRIER;	1497	BARRIER;
1242	TRANSFER (ta);	1498	TRANSFER (ta);
1243		1499
1244	if (GIMME_V != G_VOID && ta.next != ta.prev)	1500	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1245	XSRETURN_YES;	1501	XSRETURN_YES;
1246	}	1502	}
1247		1503
1248	bool	1504	bool
1249	_destroy (SV *coro_sv)	1505	_destroy (SV *coro_sv)
1250	CODE:	1506	CODE:
1251	RETVAL = coro_state_destroy (SvSTATE (coro_sv));	1507	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1252	OUTPUT:	1508	OUTPUT:
1253	RETVAL	1509	RETVAL
1254		1510
1255	void	1511	void
1256	_exit (code)	1512	_exit (code)
…		…
1258	PROTOTYPE: $	1514	PROTOTYPE: $
1259	CODE:	1515	CODE:
1260	_exit (code);	1516	_exit (code);
1261		1517
1262	int	1518	int
		1519	cctx_stacksize (int new_stacksize = 0)
		1520	CODE:
		1521	RETVAL = coro_stacksize;
		1522	if (new_stacksize)
		1523	coro_stacksize = new_stacksize;
		1524	OUTPUT:
		1525	RETVAL
		1526
		1527	int
1263	cctx_count ()	1528	cctx_count ()
1264	CODE:	1529	CODE:
1265	RETVAL = cctx_count;	1530	RETVAL = cctx_count;
1266	OUTPUT:	1531	OUTPUT:
1267	RETVAL	1532	RETVAL
…		…
1271	CODE:	1536	CODE:
1272	RETVAL = cctx_idle;	1537	RETVAL = cctx_idle;
1273	OUTPUT:	1538	OUTPUT:
1274	RETVAL	1539	RETVAL
1275		1540
		1541	void
		1542	list ()
		1543	PPCODE:
		1544	{
		1545	struct coro *coro;
		1546	for (coro = coro_first; coro; coro = coro->next)
		1547	if (coro->hv)
		1548	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1549	}
		1550
		1551	void
		1552	call (Coro::State coro, SV *coderef)
		1553	ALIAS:
		1554	eval = 1
		1555	CODE:
		1556	{
		1557	if (coro->mainstack)
		1558	{
		1559	struct coro temp;
		1560	Zero (&temp, 1, struct coro);
		1561
		1562	if (!(coro->flags & CF_RUNNING))
		1563	{
		1564	save_perl (aTHX_ &temp);
		1565	load_perl (aTHX_ coro);
		1566	}
		1567
		1568	{
		1569	dSP;
		1570	ENTER;
		1571	SAVETMPS;
		1572	PUSHMARK (SP);
		1573	PUTBACK;
		1574	if (ix)
		1575	eval_sv (coderef, 0);
		1576	else
		1577	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1578	SPAGAIN;
		1579	FREETMPS;
		1580	LEAVE;
		1581	PUTBACK;
		1582	}
		1583
		1584	if (!(coro->flags & CF_RUNNING))
		1585	{
		1586	save_perl (aTHX_ coro);
		1587	load_perl (aTHX_ &temp);
		1588	}
		1589	}
		1590	}
		1591
		1592	SV *
		1593	is_ready (Coro::State coro)
		1594	PROTOTYPE: $
		1595	ALIAS:
		1596	is_ready = CF_READY
		1597	is_running = CF_RUNNING
		1598	is_new = CF_NEW
		1599	is_destroyed = CF_DESTROYED
		1600	CODE:
		1601	RETVAL = boolSV (coro->flags & ix);
		1602	OUTPUT:
		1603	RETVAL
		1604
		1605	void
		1606	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1607
		1608	SV *
		1609	has_stack (Coro::State coro)
		1610	PROTOTYPE: $
		1611	CODE:
		1612	RETVAL = boolSV (!!coro->cctx);
		1613	OUTPUT:
		1614	RETVAL
		1615
		1616	int
		1617	is_traced (Coro::State coro)
		1618	PROTOTYPE: $
		1619	CODE:
		1620	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1621	OUTPUT:
		1622	RETVAL
		1623
		1624	IV
		1625	rss (Coro::State coro)
		1626	PROTOTYPE: $
		1627	ALIAS:
		1628	usecount = 1
		1629	CODE:
		1630	switch (ix)
		1631	{
		1632	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1633	case 1: RETVAL = coro->usecount; break;
		1634	}
		1635	OUTPUT:
		1636	RETVAL
		1637
		1638
1276	MODULE = Coro::State PACKAGE = Coro	1639	MODULE = Coro::State PACKAGE = Coro
1277		1640
1278	BOOT:	1641	BOOT:
1279	{	1642	{
1280	int i;	1643	int i;
		1644
		1645	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
		1646	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
		1647	av_async_pool = get_av ("Coro::async_pool", TRUE);
		1648
		1649	coro_current = get_sv ("Coro::current", FALSE);
		1650	SvREADONLY_on (coro_current);
1281		1651
1282	coro_stash = gv_stashpv ("Coro", TRUE);	1652	coro_stash = gv_stashpv ("Coro", TRUE);
1283		1653
1284	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1654	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1285	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1655	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1286	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1656	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1287	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1657	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1288	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1658	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1289	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1659	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1290		1660
1291	coro_current = get_sv ("Coro::current", FALSE);
1292	SvREADONLY_on (coro_current);
1293
1294	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1661	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1295	coro_ready[i] = newAV ();	1662	coro_ready[i] = newAV ();
1296		1663
1297	{	1664	{
1298	SV *sv = perl_get_sv("Coro::API", 1);	1665	SV *sv = perl_get_sv("Coro::API", 1);
1299		1666
1300	coroapi.schedule = api_schedule;	1667	coroapi.schedule = api_schedule;
1301	coroapi.save = api_save;
1302	coroapi.cede = api_cede;	1668	coroapi.cede = api_cede;
1303	coroapi.cede_notself = api_cede_notself;	1669	coroapi.cede_notself = api_cede_notself;
1304	coroapi.ready = api_ready;	1670	coroapi.ready = api_ready;
1305	coroapi.is_ready = api_is_ready;	1671	coroapi.is_ready = api_is_ready;
1306	coroapi.nready = &coro_nready;	1672	coroapi.nready = &coro_nready;
…		…
1347	CODE:	1713	CODE:
1348	RETVAL = boolSV (api_ready (self));	1714	RETVAL = boolSV (api_ready (self));
1349	OUTPUT:	1715	OUTPUT:
1350	RETVAL	1716	RETVAL
1351		1717
1352	SV *
1353	is_ready (SV *self)
1354	PROTOTYPE: $
1355	CODE:
1356	RETVAL = boolSV (api_is_ready (self));
1357	OUTPUT:
1358	RETVAL
1359
1360	int	1718	int
1361	nready (...)	1719	nready (...)
1362	PROTOTYPE:	1720	PROTOTYPE:
1363	CODE:	1721	CODE:
1364	RETVAL = coro_nready;	1722	RETVAL = coro_nready;
1365	OUTPUT:	1723	OUTPUT:
1366	RETVAL	1724	RETVAL
1367		1725
		1726	# for async_pool speedup
		1727	void
		1728	_pool_1 (SV *cb)
		1729	CODE:
		1730	{
		1731	struct coro *coro = SvSTATE (coro_current);
		1732	HV *hv = (HV *)SvRV (coro_current);
		1733	AV *defav = GvAV (PL_defgv);
		1734	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
		1735	AV *invoke_av;
		1736	int i, len;
		1737
		1738	if (!invoke)
		1739	croak ("\3terminate\2\n");
		1740
		1741	SvREFCNT_dec (coro->saved_deffh);
		1742	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1743
		1744	hv_store (hv, "desc", sizeof ("desc") - 1,
		1745	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
		1746
		1747	invoke_av = (AV *)SvRV (invoke);
		1748	len = av_len (invoke_av);
		1749
		1750	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1751
		1752	if (len > 0)
		1753	{
		1754	av_fill (defav, len - 1);
		1755	for (i = 0; i < len; ++i)
		1756	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1757	}
		1758
		1759	SvREFCNT_dec (invoke);
		1760	}
		1761
		1762	void
		1763	_pool_2 (SV *cb)
		1764	CODE:
		1765	{
		1766	struct coro *coro = SvSTATE (coro_current);
		1767
		1768	sv_setsv (cb, &PL_sv_undef);
		1769
		1770	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1771	coro->saved_deffh = 0;
		1772
		1773	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1774	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1775	croak ("\3terminate\2\n");
		1776
		1777	av_clear (GvAV (PL_defgv));
		1778	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
		1779	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
		1780
		1781	coro->prio = 0;
		1782
		1783	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1784	api_trace (coro_current, 0);
		1785
		1786	av_push (av_async_pool, newSVsv (coro_current));
		1787	}
		1788
		1789
1368	MODULE = Coro::State PACKAGE = Coro::AIO	1790	MODULE = Coro::State PACKAGE = Coro::AIO
1369		1791
1370	SV *	1792	SV *
1371	_get_state ()	1793	_get_state ()
1372	CODE:	1794	CODE:

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