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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.147 by root, Mon Mar 19 15:50:48 2007 UTC vs.
Revision 1.208 by root, Wed Oct 10 00:53:18 2007 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
8		9
…		…
75	/* 5.8.7 */	76	/* 5.8.7 */
76	#ifndef SvRV_set	77	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	78	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	79	#endif
79		80
		81	/* 5.8.8 */
		82	#ifndef GV_NOTQUAL
		83	# define GV_NOTQUAL 0
		84	#endif
		85	#ifndef newSV
		86	# define newSV(l) NEWSV(0,l)
		87	#endif
		88
80	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
81	# undef CORO_STACKGUARD	90	# undef CORO_STACKGUARD
82	#endif	91	#endif
83		92
84	#ifndef CORO_STACKGUARD	93	#ifndef CORO_STACKGUARD
…		…
88	/* prefer perl internal functions over our own? */	97	/* prefer perl internal functions over our own? */
89	#ifndef CORO_PREFER_PERL_FUNCTIONS	98	#ifndef CORO_PREFER_PERL_FUNCTIONS
90	# define CORO_PREFER_PERL_FUNCTIONS 0	99	# define CORO_PREFER_PERL_FUNCTIONS 0
91	#endif	100	#endif
92		101
93	/* The next macro should declare a variable stacklevel that contains and approximation	102	/* The next macros try to return the current stack pointer, in an as
94	* to the current C stack pointer. Its property is that it changes with each call	103	* portable way as possible. */
95	* and should be unique. */
96	#define dSTACKLEVEL int stacklevel	104	#define dSTACKLEVEL volatile char stacklevel
97	#define STACKLEVEL ((void *)&stacklevel)	105	#define STACKLEVEL ((void *)&stacklevel)
98		106
99	#define IN_DESTRUCT (PL_main_cv == Nullcv)	107	#define IN_DESTRUCT (PL_main_cv == Nullcv)
100		108
101	#if __GNUC__ >= 3	109	#if __GNUC__ >= 3
102	# define attribute(x) __attribute__(x)	110	# define attribute(x) __attribute__(x)
103	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		112	# define expect(expr,value) __builtin_expect ((expr),(value))
104	#else	113	#else
105	# define attribute(x)	114	# define attribute(x)
106	# define BARRIER	115	# define BARRIER
		116	# define expect(expr,value) (expr)
107	#endif	117	#endif
		118
		119	#define expect_false(expr) expect ((expr) != 0, 0)
		120	#define expect_true(expr) expect ((expr) != 0, 1)
108		121
109	#define NOINLINE attribute ((noinline))	122	#define NOINLINE attribute ((noinline))
110		123
111	#include "CoroAPI.h"	124	#include "CoroAPI.h"
112		125
…		…
117	#else	130	#else
118	# define LOCK (void)0	131	# define LOCK (void)0
119	# define UNLOCK (void)0	132	# define UNLOCK (void)0
120	#endif	133	#endif
121		134
		135	#define strpair(const) const, sizeof (const) - 1
		136
122	/* helper storage struct for Coro::AIO */	137	/* helper storage struct for Coro::AIO */
123	struct io_state	138	struct io_state
124	{	139	{
125	int errorno;	140	int errorno;
126	I32 laststype;	141	I32 laststype;
…		…
129	};	144	};
130		145
131	static size_t coro_stacksize = CORO_STACKSIZE;	146	static size_t coro_stacksize = CORO_STACKSIZE;
132	static struct CoroAPI coroapi;	147	static struct CoroAPI coroapi;
133	static AV *main_mainstack; /* used to differentiate between $main and others */	148	static AV *main_mainstack; /* used to differentiate between $main and others */
		149	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	150	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	151	static SV *coro_mortal; /* will be freed after next transfer */
136		152
		153	static GV *irsgv; /* $/ */
		154	static GV *stdoutgv; /* *STDOUT */
		155
		156	static HV *hv_sig; /* %SIG */
		157	static SV *sv_diehook;
		158	static SV *sv_warnhook;
		159
		160	/* async_pool helper stuff */
		161	static SV *sv_pool_rss;
		162	static SV *sv_pool_size;
		163	static AV *av_async_pool;
		164
137	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
138	static int cctx_count, cctx_idle;	166	static int cctx_count, cctx_idle;
		167
		168	enum {
		169	CC_MAPPED = 0x01,
		170	CC_NOREUSE = 0x02, /* throw this away after tracing */
		171	CC_TRACE = 0x04,
		172	CC_TRACE_SUB = 0x08, /* trace sub calls */
		173	CC_TRACE_LINE = 0x10, /* trace each statement */
		174	CC_TRACE_ALL = CC_TRACE_SUB | CC_TRACE_LINE,
		175	};
139		176
140	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
141	typedef struct coro_cctx {	178	typedef struct coro_cctx {
142	struct coro_cctx *next;	179	struct coro_cctx *next;
143		180
…		…
152	coro_context cctx;	189	coro_context cctx;
153		190
154	#if CORO_USE_VALGRIND	191	#if CORO_USE_VALGRIND
155	int valgrind_id;	192	int valgrind_id;
156	#endif	193	#endif
157	char inuse, mapped;	194	unsigned char flags;
158	} coro_cctx;	195	} coro_cctx;
159		196
160	enum {	197	enum {
161	CF_RUNNING = 0x0001, /* coroutine is running */	198	CF_RUNNING = 0x0001, /* coroutine is running */
162	CF_READY = 0x0002, /* coroutine is ready */	199	CF_READY = 0x0002, /* coroutine is ready */
163	CF_NEW = 0x0004, /* has never been switched to */	200	CF_NEW = 0x0004, /* has never been switched to */
164	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
165	};	202	};
166		203
		204	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		205	typedef struct {
		206	SV *defsv;
		207	AV *defav;
		208	SV *errsv;
		209	SV *irsgv;
		210	#define VAR(name,type) type name;
		211	# include "state.h"
		212	#undef VAR
		213	} perl_slots;
		214
		215	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		216
167	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
168	struct coro {	218	struct coro {
169	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
170	coro_cctx *cctx;	220	coro_cctx *cctx;
171		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots *slot; /* basically the saved sp */
		225
172	/* data associated with this coroutine (initial args) */	226	AV *args; /* data associated with this coroutine (initial args) */
173	AV *args;	227	int refcnt; /* coroutines are refcounted, yes */
174	int refcnt;
175	int save; /* CORO_SAVE flags */
176	int flags; /* CF_ flags */	228	int flags; /* CF_ flags */
		229	HV *hv; /* the perl hash associated with this coro, if any */
177		230
178	/* optionally saved, might be zero */	231	/* statistics */
179	AV *defav; /* @_ */	232	int usecount; /* number of transfers to this coro */
180	SV *defsv; /* $_ */
181	SV *errsv; /* $@ */
182	GV *deffh; /* default filehandle */
183	SV *irssv; /* $/ */
184	SV *irssv_sv; /* real $/ cache */
185
186	#define VAR(name,type) type name;
187	# include "state.h"
188	#undef VAR
189		233
190	/* coro process data */	234	/* coro process data */
191	int prio;	235	int prio;
		236	SV *throw; /* exception to be thrown */
		237
		238	/* async_pool */
		239	SV *saved_deffh;
		240
		241	/* linked list */
		242	struct coro *next, *prev;
192	};	243	};
193		244
194	typedef struct coro *Coro__State;	245	typedef struct coro *Coro__State;
195	typedef struct coro *Coro__State_or_hashref;	246	typedef struct coro *Coro__State_or_hashref;
196		247
…		…
205		256
206	/* for Coro.pm */	257	/* for Coro.pm */
207	static SV *coro_current;	258	static SV *coro_current;
208	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
209	static int coro_nready;	260	static int coro_nready;
		261	static struct coro *coro_first;
210		262
211	/** lowlevel stuff **********************************************************/	263	/** lowlevel stuff **********************************************************/
		264
		265	static SV *
		266	coro_get_sv (const char *name, int create)
		267	{
		268	#if PERL_VERSION_ATLEAST (5,9,0)
		269	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		270	get_sv (name, create);
		271	#endif
		272	return get_sv (name, create);
		273	}
		274
		275	static AV *
		276	coro_get_av (const char *name, int create)
		277	{
		278	#if PERL_VERSION_ATLEAST (5,9,0)
		279	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		280	get_av (name, create);
		281	#endif
		282	return get_av (name, create);
		283	}
		284
		285	static HV *
		286	coro_get_hv (const char *name, int create)
		287	{
		288	#if PERL_VERSION_ATLEAST (5,9,0)
		289	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		290	get_hv (name, create);
		291	#endif
		292	return get_hv (name, create);
		293	}
212		294
213	static AV *	295	static AV *
214	coro_clone_padlist (pTHX_ CV *cv)	296	coro_clone_padlist (pTHX_ CV *cv)
215	{	297	{
216	AV *padlist = CvPADLIST (cv);	298	AV *padlist = CvPADLIST (cv);
…		…
280	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
281	? SvMAGIC (cv) \	363	? SvMAGIC (cv) \
282	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
283	: 0	365	: 0
284		366
		367	static struct coro *
		368	SvSTATE_ (pTHX_ SV *coro)
		369	{
		370	HV *stash;
		371	MAGIC *mg;
		372
		373	if (SvROK (coro))
		374	coro = SvRV (coro);
		375
		376	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		377	croak ("Coro::State object required");
		378
		379	stash = SvSTASH (coro);
		380	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		381	{
		382	/* very slow, but rare, check */
		383	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		384	croak ("Coro::State object required");
		385	}
		386
		387	mg = CORO_MAGIC (coro);
		388	return (struct coro *)mg->mg_ptr;
		389	}
		390
		391	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		392
285	/* the next two functions merely cache the padlists */	393	/* the next two functions merely cache the padlists */
286	static void	394	static void
287	get_padlist (pTHX_ CV *cv)	395	get_padlist (pTHX_ CV *cv)
288	{	396	{
289	MAGIC *mg = CORO_MAGIC (cv);	397	MAGIC *mg = CORO_MAGIC (cv);
290	AV *av;	398	AV *av;
291		399
292	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
293	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
294	else	402	else
295	{	403	{
296	#if CORO_PREFER_PERL_FUNCTIONS	404	#if CORO_PREFER_PERL_FUNCTIONS
297	/* this is probably cleaner, but also slower? */	405	/* this is probably cleaner, but also slower? */
…		…
309	put_padlist (pTHX_ CV *cv)	417	put_padlist (pTHX_ CV *cv)
310	{	418	{
311	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC (cv);
312	AV *av;	420	AV *av;
313		421
314	if (!mg)	422	if (expect_false (!mg))
315	{	423	{
316	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
317	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
318	mg->mg_virtual = &vtbl_coro;	426	mg->mg_virtual = &vtbl_coro;
319	mg->mg_obj = (SV *)newAV ();	427	mg->mg_obj = (SV *)newAV ();
320	}	428	}
321		429
322	av = (AV *)mg->mg_obj;	430	av = (AV *)mg->mg_obj;
323		431
324	if (AvFILLp (av) >= AvMAX (av))	432	if (expect_false (AvFILLp (av) >= AvMAX (av)))
325	av_extend (av, AvMAX (av) + 1);	433	av_extend (av, AvMAX (av) + 1);
326		434
327	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	435	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
328	}	436	}
329		437
330	/** load & save, init *******************************************************/	438	/** load & save, init *******************************************************/
331		439
332	#define SB do {
333	#define SE } while (0)
334
335	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
336
337	static void	440	static void
338	load_perl (pTHX_ Coro__State c)	441	load_perl (pTHX_ Coro__State c)
339	{	442	{
		443	perl_slots *slot = c->slot;
		444	c->slot = 0;
		445
		446	PL_mainstack = c->mainstack;
		447
		448	GvSV (PL_defgv) = slot->defsv;
		449	GvAV (PL_defgv) = slot->defav;
		450	GvSV (PL_errgv) = slot->errsv;
		451	GvSV (irsgv) = slot->irsgv;
		452
340	#define VAR(name,type) PL_ ## name = c->name;	453	#define VAR(name,type) PL_ ## name = slot->name;
341	# include "state.h"	454	# include "state.h"
342	#undef VAR	455	#undef VAR
343		456
344	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	457	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
345	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	458	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
346	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
347	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
348
349	if (c->irssv)
350	{
351	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
352	{
353	SvREFCNT_dec (c->irssv);
354	c->irssv = 0;
355	}
356	else
357	{
358	REPLACE_SV (PL_rs, c->irssv);
359	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
360	sv_setsv (c->irssv_sv, PL_rs);
361	}
362	}
363		459
364	{	460	{
365	dSP;	461	dSP;
		462
366	CV *cv;	463	CV *cv;
367		464
368	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
369	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
370	{	467	{
371	put_padlist (aTHX_ cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
372	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
373	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
374	}	471	}
375		472
376	PUTBACK;	473	PUTBACK;
377	}	474	}
378	assert (!PL_comppad || AvARRAY (PL_comppad));//D
379	}	475	}
380		476
381	static void	477	static void
382	save_perl (pTHX_ Coro__State c)	478	save_perl (pTHX_ Coro__State c)
383	{	479	{
384	assert (!PL_comppad || AvARRAY (PL_comppad));//D
385	{	480	{
386	dSP;	481	dSP;
387	I32 cxix = cxstack_ix;	482	I32 cxix = cxstack_ix;
388	PERL_CONTEXT *ccstk = cxstack;	483	PERL_CONTEXT *ccstk = cxstack;
389	PERL_SI *top_si = PL_curstackinfo;	484	PERL_SI *top_si = PL_curstackinfo;
…		…
391	/*	486	/*
392	* the worst thing you can imagine happens first - we have to save	487	* the worst thing you can imagine happens first - we have to save
393	* (and reinitialize) all cv's in the whole callchain :(	488	* (and reinitialize) all cv's in the whole callchain :(
394	*/	489	*/
395		490
396	EXTEND (SP, 3 + 1);
397	PUSHs (Nullsv);	491	XPUSHs (Nullsv);
398	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
399	for (;;)	493	for (;;)
400	{	494	{
401	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
402	{	496	{
403	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
404		498
405	if (CxTYPE (cx) == CXt_SUB)	499	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
406	{	500	{
407	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
408		502
409	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
410	{	504	{
411	EXTEND (SP, 3);	505	EXTEND (SP, 3);
412	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
413	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
414	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
…		…
417	get_padlist (aTHX_ cv);	511	get_padlist (aTHX_ cv);
418	}	512	}
419	}	513	}
420	}	514	}
421		515
422	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
423	break;	517	break;
424		518
425	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
426	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
427	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
428	}	522	}
429		523
430	PUTBACK;	524	PUTBACK;
431	}	525	}
432		526
433	c->defav = c->save & CORO_SAVE_DEFAV ? (AV *)SvREFCNT_inc (GvAV (PL_defgv)) : 0;	527	/* allocate some space on the context stack for our purposes */
434	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
435	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
436	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	530	if (SLOT_COUNT >= 2) CXINC;
437	c->irssv = c->save & CORO_SAVE_IRSSV ? SvREFCNT_inc (PL_rs) : 0;	531	if (SLOT_COUNT >= 3) CXINC;
		532	{
		533	int i;
		534	for (i = 3; i < SLOT_COUNT; ++i)
		535	CXINC;
		536	}
		537	cxstack_ix -= SLOT_COUNT; /* undo allocation */
438		538
		539	c->mainstack = PL_mainstack;
		540
		541	{
		542	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		543
		544	slot->defav = GvAV (PL_defgv);
		545	slot->defsv = DEFSV;
		546	slot->errsv = ERRSV;
		547	slot->irsgv = GvSV (irsgv);
		548
439	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
440	# include "state.h"	550	# include "state.h"
441	#undef VAR	551	#undef VAR
		552	}
442	}	553	}
443		554
444	/*	555	/*
445	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
446	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
…		…
451	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
452	#else	563	#else
453	static void	564	static void
454	coro_init_stacks (pTHX)	565	coro_init_stacks (pTHX)
455	{	566	{
456	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	567	PL_curstackinfo = new_stackinfo(32, 8);
457	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
458	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
459	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
460		571
461	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
462	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
463	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
464		575
465	New(50,PL_tmps_stack,128,SV*);	576	New(50,PL_tmps_stack,32,SV*);
466	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
467	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
468	PL_tmps_max = 128;	579	PL_tmps_max = 32;
469		580
470	New(54,PL_markstack,32,I32);	581	New(54,PL_markstack,16,I32);
471	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
472	PL_markstack_max = PL_markstack + 32;	583	PL_markstack_max = PL_markstack + 16;
473		584
474	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
475	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
476	#endif	587	#endif
477		588
478	New(54,PL_scopestack,32,I32);	589	New(54,PL_scopestack,8,I32);
479	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
480	PL_scopestack_max = 32;	591	PL_scopestack_max = 8;
481		592
482	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
483	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
484	PL_savestack_max = 64;	595	PL_savestack_max = 24;
485		596
486	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
487	New(54,PL_retstack,16,OP*);	598	New(54,PL_retstack,4,OP*);
488	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
489	PL_retstack_max = 16;	600	PL_retstack_max = 4;
490	#endif	601	#endif
491	}	602	}
492	#endif	603	#endif
493		604
494	/*	605	/*
495	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
496	*/	607	*/
497	static void	608	static void
498	coro_destroy_stacks (pTHX)	609	coro_destroy_stacks (pTHX)
499	{	610	{
500	if (!IN_DESTRUCT)
501	{
502	/* restore all saved variables and stuff */
503	LEAVE_SCOPE (0);
504	assert (PL_tmps_floor == -1);
505
506	/* free all temporaries */
507	FREETMPS;
508	assert (PL_tmps_ix == -1);
509
510	/* unwind all extra stacks */
511	POPSTACK_TO (PL_mainstack);
512
513	/* unwind main stack */
514	dounwind (-1);
515	}
516
517	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
518	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
519		613
520	while (PL_curstackinfo)	614	while (PL_curstackinfo)
521	{	615	{
…		…
536	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,9,0)
537	Safefree (PL_retstack);	631	Safefree (PL_retstack);
538	#endif	632	#endif
539	}	633	}
540		634
		635	static size_t
		636	coro_rss (pTHX_ struct coro *coro)
		637	{
		638	size_t rss = sizeof (*coro);
		639
		640	if (coro->mainstack)
		641	{
		642	perl_slots tmp_slot;
		643	perl_slots *slot;
		644
		645	if (coro->flags & CF_RUNNING)
		646	{
		647	slot = &tmp_slot;
		648
		649	#define VAR(name,type) slot->name = PL_ ## name;
		650	# include "state.h"
		651	#undef VAR
		652	}
		653	else
		654	slot = coro->slot;
		655
		656	rss += sizeof (slot->curstackinfo);
		657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
		658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
		659	rss += slot->tmps_max * sizeof (SV *);
		660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
		661	rss += slot->scopestack_max * sizeof (I32);
		662	rss += slot->savestack_max * sizeof (ANY);
		663
		664	#if !PERL_VERSION_ATLEAST (5,9,0)
		665	rss += slot->retstack_max * sizeof (OP *);
		666	#endif
		667	}
		668
		669	return rss;
		670	}
		671
541	/** coroutine stack handling ************************************************/	672	/** coroutine stack handling ************************************************/
542		673
543	static void	674	static void
544	setup_coro (pTHX_ struct coro *coro)	675	coro_setup (pTHX_ struct coro *coro)
545	{	676	{
546	/*	677	/*
547	* emulate part of the perl startup here.	678	* emulate part of the perl startup here.
548	*/	679	*/
549	coro_init_stacks (aTHX);	680	coro_init_stacks (aTHX);
550		681
		682	PL_runops = RUNOPS_DEFAULT;
551	PL_curcop = &PL_compiling;	683	PL_curcop = &PL_compiling;
552	PL_in_eval = EVAL_NULL;	684	PL_in_eval = EVAL_NULL;
553	PL_comppad = 0;	685	PL_comppad = 0;
554	PL_curpm = 0;	686	PL_curpm = 0;
		687	PL_curpad = 0;
555	PL_localizing = 0;	688	PL_localizing = 0;
556	PL_dirty = 0;	689	PL_dirty = 0;
557	PL_restartop = 0;	690	PL_restartop = 0;
		691	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		692	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		693
		694	GvSV (PL_defgv) = newSV (0);
		695	GvAV (PL_defgv) = coro->args; coro->args = 0;
		696	GvSV (PL_errgv) = newSV (0);
		697	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		698	PL_rs = newSVsv (GvSV (irsgv));
		699	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);
558		700
559	{	701	{
560	dSP;	702	dSP;
561	LOGOP myop;	703	LOGOP myop;
562		704
563	SvREFCNT_dec (GvAV (PL_defgv));
564	GvAV (PL_defgv) = coro->args; coro->args = 0;
565
566	Zero (&myop, 1, LOGOP);	705	Zero (&myop, 1, LOGOP);
567	myop.op_next = Nullop;	706	myop.op_next = Nullop;
568	myop.op_flags = OPf_WANT_VOID;	707	myop.op_flags = OPf_WANT_VOID;
569		708
570	PUSHMARK (SP);	709	PUSHMARK (SP);
571	XPUSHs ((SV *)get_cv ("Coro::State::_coro_init", FALSE));	710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
572	PUTBACK;	711	PUTBACK;
573	PL_op = (OP *)&myop;	712	PL_op = (OP *)&myop;
574	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
575	SPAGAIN;	714	SPAGAIN;
576	}	715	}
577		716
578	ENTER; /* necessary e.g. for dounwind */	717	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */
		718	}
		719
		720	static void
		721	coro_destroy (pTHX_ struct coro *coro)
		722	{
		723	if (!IN_DESTRUCT)
		724	{
		725	/* restore all saved variables and stuff */
		726	LEAVE_SCOPE (0);
		727	assert (PL_tmps_floor == -1);
		728
		729	/* free all temporaries */
		730	FREETMPS;
		731	assert (PL_tmps_ix == -1);
		732
		733	/* unwind all extra stacks */
		734	POPSTACK_TO (PL_mainstack);
		735
		736	/* unwind main stack */
		737	dounwind (-1);
		738	}
		739
		740	SvREFCNT_dec (GvSV (PL_defgv));
		741	SvREFCNT_dec (GvAV (PL_defgv));
		742	SvREFCNT_dec (GvSV (PL_errgv));
		743	SvREFCNT_dec (PL_defoutgv);
		744	SvREFCNT_dec (PL_rs);
		745	SvREFCNT_dec (GvSV (irsgv));
		746
		747	SvREFCNT_dec (PL_diehook);
		748	SvREFCNT_dec (PL_warnhook);
		749
		750	SvREFCNT_dec (coro->saved_deffh);
		751	SvREFCNT_dec (coro->throw);
		752
		753	coro_destroy_stacks (aTHX);
579	}	754	}
580		755
581	static void	756	static void
582	free_coro_mortal (pTHX)	757	free_coro_mortal (pTHX)
583	{	758	{
584	if (coro_mortal)	759	if (expect_true (coro_mortal))
585	{	760	{
586	SvREFCNT_dec (coro_mortal);	761	SvREFCNT_dec (coro_mortal);
587	coro_mortal = 0;	762	coro_mortal = 0;
588	}	763	}
589	}	764	}
590		765
		766	static int
		767	runops_trace (pTHX)
		768	{
		769	COP *oldcop = 0;
		770	int oldcxix = -2;
		771	struct coro *coro = SvSTATE (coro_current); /* trace cctx is tied to specific coro */
		772	coro_cctx *cctx = coro->cctx;
		773
		774	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
		775	{
		776	PERL_ASYNC_CHECK ();
		777
		778	if (cctx->flags & CC_TRACE_ALL)
		779	{
		780	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)
		781	{
		782	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		783	SV **bot, **top;
		784	AV *av = newAV (); /* return values */
		785	SV **cb;
		786	dSP;
		787
		788	GV *gv = CvGV (cx->blk_sub.cv);
		789	SV *fullname = sv_2mortal (newSV (0));
		790	if (isGV (gv))
		791	gv_efullname3 (fullname, gv, 0);
		792
		793	bot = PL_stack_base + cx->blk_oldsp + 1;
		794	top = cx->blk_gimme == G_ARRAY ? SP + 1
		795	: cx->blk_gimme == G_SCALAR ? bot + 1
		796	: bot;
		797
		798	av_extend (av, top - bot);
		799	while (bot < top)
		800	av_push (av, SvREFCNT_inc (*bot++));
		801
		802	PL_runops = RUNOPS_DEFAULT;
		803	ENTER;
		804	SAVETMPS;
		805	EXTEND (SP, 3);
		806	PUSHMARK (SP);
		807	PUSHs (&PL_sv_no);
		808	PUSHs (fullname);
		809	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		810	PUTBACK;
		811	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		812	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		813	SPAGAIN;
		814	FREETMPS;
		815	LEAVE;
		816	PL_runops = runops_trace;
		817	}
		818
		819	if (oldcop != PL_curcop)
		820	{
		821	oldcop = PL_curcop;
		822
		823	if (PL_curcop != &PL_compiling)
		824	{
		825	SV **cb;
		826
		827	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)
		828	{
		829	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
		830
		831	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
		832	{
		833	runops_proc_t old_runops = PL_runops;
		834	dSP;
		835	GV *gv = CvGV (cx->blk_sub.cv);
		836	SV *fullname = sv_2mortal (newSV (0));
		837
		838	if (isGV (gv))
		839	gv_efullname3 (fullname, gv, 0);
		840
		841	PL_runops = RUNOPS_DEFAULT;
		842	ENTER;
		843	SAVETMPS;
		844	EXTEND (SP, 3);
		845	PUSHMARK (SP);
		846	PUSHs (&PL_sv_yes);
		847	PUSHs (fullname);
		848	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
		849	PUTBACK;
		850	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);
		851	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		852	SPAGAIN;
		853	FREETMPS;
		854	LEAVE;
		855	PL_runops = runops_trace;
		856	}
		857
		858	oldcxix = cxstack_ix;
		859	}
		860
		861	if (cctx->flags & CC_TRACE_LINE)
		862	{
		863	dSP;
		864
		865	PL_runops = RUNOPS_DEFAULT;
		866	ENTER;
		867	SAVETMPS;
		868	EXTEND (SP, 3);
		869	PL_runops = RUNOPS_DEFAULT;
		870	PUSHMARK (SP);
		871	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
		872	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
		873	PUTBACK;
		874	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);
		875	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		876	SPAGAIN;
		877	FREETMPS;
		878	LEAVE;
		879	PL_runops = runops_trace;
		880	}
		881	}
		882	}
		883	}
		884	}
		885
		886	TAINT_NOT;
		887	return 0;
		888	}
		889
591	/* inject a fake call to Coro::State::_cctx_init into the execution */	890	/* inject a fake call to Coro::State::_cctx_init into the execution */
		891	/* _cctx_init should be careful, as it could be called at almost any time */
		892	/* during execution of a perl program */
592	static void NOINLINE	893	static void NOINLINE
593	prepare_cctx (pTHX_ coro_cctx *cctx)	894	cctx_prepare (pTHX_ coro_cctx *cctx)
594	{	895	{
595	dSP;	896	dSP;
596	LOGOP myop;	897	LOGOP myop;
		898
		899	PL_top_env = &PL_start_env;
		900
		901	if (cctx->flags & CC_TRACE)
		902	PL_runops = runops_trace;
597		903
598	Zero (&myop, 1, LOGOP);	904	Zero (&myop, 1, LOGOP);
599	myop.op_next = PL_op;	905	myop.op_next = PL_op;
600	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	906	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
601		907
…		…
607	PL_op = (OP *)&myop;	913	PL_op = (OP *)&myop;
608	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	914	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
609	SPAGAIN;	915	SPAGAIN;
610	}	916	}
611		917
		918	/*
		919	* this is a _very_ stripped down perl interpreter ;)
		920	*/
612	static void	921	static void
613	coro_run (void *arg)	922	cctx_run (void *arg)
614	{	923	{
615	dTHX;	924	dTHX;
616		925
617	/* coro_run is the alternative tail of transfer(), so unlock here. */	926	/* cctx_run is the alternative tail of transfer(), so unlock here. */
618	UNLOCK;	927	UNLOCK;
619		928
620	/*	929	/* we now skip the entersub that lead to transfer() */
621	* this is a _very_ stripped down perl interpreter ;)	930	PL_op = PL_op->op_next;
622	*/
623	PL_top_env = &PL_start_env;
624		931
625	/* inject call to cctx_init */	932	/* inject a fake subroutine call to cctx_init */
626	prepare_cctx (aTHX_ (coro_cctx *)arg);	933	cctx_prepare (aTHX_ (coro_cctx *)arg);
627		934
628	/* somebody will hit me for both perl_run and PL_restartop */	935	/* somebody or something will hit me for both perl_run and PL_restartop */
629	PL_restartop = PL_op;	936	PL_restartop = PL_op;
630	perl_run (PL_curinterp);	937	perl_run (PL_curinterp);
631		938
632	fputs ("FATAL: C coroutine fell over the edge of the world, aborting. Did you call exit in a coroutine?\n", stderr);	939	/*
633	abort ();	940	* If perl-run returns we assume exit() was being called or the coro
		941	* fell off the end, which seems to be the only valid (non-bug)
		942	* reason for perl_run to return. We try to exit by jumping to the
		943	* bootstrap-time "top" top_env, as we cannot restore the "main"
		944	* coroutine as Coro has no such concept
		945	*/
		946	PL_top_env = main_top_env;
		947	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
634	}	948	}
635		949
636	static coro_cctx *	950	static coro_cctx *
637	cctx_new ()	951	cctx_new ()
638	{	952	{
…		…
643	++cctx_count;	957	++cctx_count;
644		958
645	Newz (0, cctx, 1, coro_cctx);	959	Newz (0, cctx, 1, coro_cctx);
646		960
647	#if HAVE_MMAP	961	#if HAVE_MMAP
648
649	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
650	/* mmap supposedly does allocate-on-write for us */	963	/* mmap supposedly does allocate-on-write for us */
651	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	964	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
652		965
653	if (cctx->sptr != (void *)-1)	966	if (cctx->sptr != (void *)-1)
…		…
655	# if CORO_STACKGUARD	968	# if CORO_STACKGUARD
656	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	969	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
657	# endif	970	# endif
658	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	971	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
659	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	972	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
660	cctx->mapped = 1;	973	cctx->flags |= CC_MAPPED;
661	}	974	}
662	else	975	else
663	#endif	976	#endif
664	{	977	{
665	cctx->ssize = coro_stacksize * (long)sizeof (long);	978	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
674	stack_start = cctx->sptr;	987	stack_start = cctx->sptr;
675	stack_size = cctx->ssize;	988	stack_size = cctx->ssize;
676	}	989	}
677		990
678	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	991	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
679	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	992	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
680		993
681	return cctx;	994	return cctx;
682	}	995	}
683		996
684	static void	997	static void
…		…
692	#if CORO_USE_VALGRIND	1005	#if CORO_USE_VALGRIND
693	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
694	#endif	1007	#endif
695		1008
696	#if HAVE_MMAP	1009	#if HAVE_MMAP
697	if (cctx->mapped)	1010	if (cctx->flags & CC_MAPPED)
698	munmap (cctx->sptr, cctx->ssize);	1011	munmap (cctx->sptr, cctx->ssize);
699	else	1012	else
700	#endif	1013	#endif
701	Safefree (cctx->sptr);	1014	Safefree (cctx->sptr);
702		1015
703	Safefree (cctx);	1016	Safefree (cctx);
704	}	1017	}
705		1018
		1019	/* wether this cctx should be destructed */
		1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1021
706	static coro_cctx *	1022	static coro_cctx *
707	cctx_get (pTHX)	1023	cctx_get (pTHX)
708	{	1024	{
709	while (cctx_first)	1025	while (expect_true (cctx_first))
710	{	1026	{
711	coro_cctx *cctx = cctx_first;	1027	coro_cctx *cctx = cctx_first;
712	cctx_first = cctx->next;	1028	cctx_first = cctx->next;
713	--cctx_idle;	1029	--cctx_idle;
714		1030
715	if (cctx->ssize >= coro_stacksize)	1031	if (expect_true (!CCTX_EXPIRED (cctx)))
716	return cctx;	1032	return cctx;
717		1033
718	cctx_destroy (cctx);	1034	cctx_destroy (cctx);
719	}	1035	}
720		1036
721	PL_op = PL_op->op_next;
722	return cctx_new ();	1037	return cctx_new ();
723	}	1038	}
724		1039
725	static void	1040	static void
726	cctx_put (coro_cctx *cctx)	1041	cctx_put (coro_cctx *cctx)
727	{	1042	{
728	/* free another cctx if overlimit */	1043	/* free another cctx if overlimit */
729	if (cctx_idle >= MAX_IDLE_CCTX)	1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
730	{	1045	{
731	coro_cctx *first = cctx_first;	1046	coro_cctx *first = cctx_first;
732	cctx_first = first->next;	1047	cctx_first = first->next;
733	--cctx_idle;	1048	--cctx_idle;
734		1049
735	assert (!first->inuse);
736	cctx_destroy (first);	1050	cctx_destroy (first);
737	}	1051	}
738		1052
739	++cctx_idle;	1053	++cctx_idle;
740	cctx->next = cctx_first;	1054	cctx->next = cctx_first;
741	cctx_first = cctx;	1055	cctx_first = cctx;
742	}	1056	}
743		1057
744	/** coroutine switching *****************************************************/	1058	/** coroutine switching *****************************************************/
745		1059
746	/* never call directly, always through the coro_state_transfer global variable */	1060	static void
		1061	transfer_check (pTHX_ struct coro *prev, struct coro *next)
		1062	{
		1063	if (expect_true (prev != next))
		1064	{
		1065	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
		1066	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
		1067
		1068	if (expect_false (next->flags & CF_RUNNING))
		1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
		1070
		1071	if (expect_false (next->flags & CF_DESTROYED))
		1072	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
		1073
		1074	if (
		1075	#if PERL_VERSION_ATLEAST (5,9,0)
		1076	expect_false (PL_parser)
		1077	#else
		1078	expect_false (PL_lex_state != LEX_NOTPARSING)
		1079	#endif
		1080	)
		1081	croak ("Coro::State::transfer called while parsing, but this is not supported");
		1082	}
		1083	}
		1084
		1085	/* always use the TRANSFER macro */
747	static void NOINLINE	1086	static void NOINLINE
748	transfer (pTHX_ struct coro *prev, struct coro *next)	1087	transfer (pTHX_ struct coro *prev, struct coro *next)
749	{	1088	{
750	dSTACKLEVEL;	1089	dSTACKLEVEL;
751		1090
752	/* sometimes transfer is only called to set idle_sp */	1091	/* sometimes transfer is only called to set idle_sp */
753	if (!next)	1092	if (expect_false (!next))
754	{	1093	{
755	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
756	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1095	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
757	}	1096	}
758	else if (prev != next)	1097	else if (expect_true (prev != next))
759	{	1098	{
760	coro_cctx *prev__cctx;	1099	coro_cctx *prev__cctx;
761		1100
762	if (prev->flags & CF_NEW)	1101	if (expect_false (prev->flags & CF_NEW))
763	{	1102	{
764	/* create a new empty context */	1103	/* create a new empty context */
765	Newz (0, prev->cctx, 1, coro_cctx);	1104	Newz (0, prev->cctx, 1, coro_cctx);
766	prev->cctx->inuse = 1;
767	prev->flags &= ~CF_NEW;	1105	prev->flags &= ~CF_NEW;
768	prev->flags |= CF_RUNNING;	1106	prev->flags |= CF_RUNNING;
769	}	1107	}
770		1108
771	/*TODO: must not croak here */
772	if (!prev->flags & CF_RUNNING)
773	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
774
775	if (next->flags & CF_RUNNING)
776	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
777
778	if (next->flags & CF_DESTROYED)
779	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
780
781	prev->flags &= ~CF_RUNNING;	1109	prev->flags &= ~CF_RUNNING;
782	next->flags |= CF_RUNNING;	1110	next->flags |= CF_RUNNING;
783		1111
784	LOCK;	1112	LOCK;
785		1113
786	if (next->flags & CF_NEW)	1114	if (expect_false (next->flags & CF_NEW))
787	{	1115	{
788	/* need to start coroutine */	1116	/* need to start coroutine */
789	next->flags &= ~CF_NEW;	1117	next->flags &= ~CF_NEW;
790	/* first get rid of the old state */	1118	/* first get rid of the old state */
791	save_perl (aTHX_ prev);	1119	save_perl (aTHX_ prev);
792	/* setup coroutine call */	1120	/* setup coroutine call */
793	setup_coro (aTHX_ next);	1121	coro_setup (aTHX_ next);
794	/* need a new stack */
795	assert (!next->cctx);
796	}	1122	}
797	else	1123	else
798	{	1124	{
799	/* coroutine already started */	1125	/* coroutine already started */
800	save_perl (aTHX_ prev);	1126	save_perl (aTHX_ prev);
…		…
802	}	1128	}
803		1129
804	prev__cctx = prev->cctx;	1130	prev__cctx = prev->cctx;
805		1131
806	/* possibly "free" the cctx */	1132	/* possibly "free" the cctx */
807	if (prev__cctx->idle_sp == STACKLEVEL)	1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
808	{	1134	{
809	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
810	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
811		1137
812	prev->cctx = 0;	1138	prev->cctx = 0;
813		1139
		1140	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1141	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1142	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1143	if (!next->cctx)
		1144	next->cctx = cctx_get (aTHX);
		1145
814	cctx_put (prev__cctx);	1146	cctx_put (prev__cctx);
815	prev__cctx->inuse = 0;
816	}	1147	}
817		1148
		1149	++next->usecount;
		1150
818	if (!next->cctx)	1151	if (expect_true (!next->cctx))
819	{
820	next->cctx = cctx_get (aTHX);	1152	next->cctx = cctx_get (aTHX);
821	assert (!next->cctx->inuse);
822	next->cctx->inuse = 1;
823	}
824		1153
825	if (prev__cctx != next->cctx)	1154	if (expect_false (prev__cctx != next->cctx))
826	{	1155	{
827	prev__cctx->top_env = PL_top_env;	1156	prev__cctx->top_env = PL_top_env;
828	PL_top_env = next->cctx->top_env;	1157	PL_top_env = next->cctx->top_env;
829	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1158	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
830	}	1159	}
831		1160
832	free_coro_mortal (aTHX);	1161	free_coro_mortal (aTHX);
833	UNLOCK;	1162	UNLOCK;
		1163
		1164	if (expect_false (prev->throw || next->throw))
		1165	{
		1166	struct coro *coro = SvSTATE (coro_current);
		1167
		1168	if (coro->throw)
		1169	{
		1170	SV *exception = coro->throw;
		1171	coro->throw = 0;
		1172	sv_setsv (ERRSV, exception);
		1173	croak (0);
		1174	}
		1175	}
834	}	1176	}
835	}	1177	}
836		1178
837	struct transfer_args	1179	struct transfer_args
838	{	1180	{
839	struct coro *prev, *next;	1181	struct coro *prev, *next;
840	};	1182	};
841		1183
842	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1184	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)
		1185	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
843		1186
844	/** high level stuff ********************************************************/	1187	/** high level stuff ********************************************************/
845		1188
846	static int	1189	static int
847	coro_state_destroy (pTHX_ struct coro *coro)	1190	coro_state_destroy (pTHX_ struct coro *coro)
…		…
864		1207
865	if (coro->mainstack && coro->mainstack != main_mainstack)	1208	if (coro->mainstack && coro->mainstack != main_mainstack)
866	{	1209	{
867	struct coro temp;	1210	struct coro temp;
868		1211
869	assert (!(coro->flags & CF_RUNNING));
870
871	Zero (&temp, 1, struct coro);
872	temp.save = CORO_SAVE_DEF;
873
874	if (coro->flags & CF_RUNNING)	1212	if (coro->flags & CF_RUNNING)
875	croak ("FATAL: tried to destroy currently running coroutine");	1213	croak ("FATAL: tried to destroy currently running coroutine");
876		1214
877	save_perl (aTHX_ &temp);	1215	save_perl (aTHX_ &temp);
878	load_perl (aTHX_ coro);	1216	load_perl (aTHX_ coro);
879		1217
880	coro_destroy_stacks (aTHX);	1218	coro_destroy (aTHX_ coro);
881		1219
882	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1220	load_perl (aTHX_ &temp);
883		1221
884	coro->mainstack = 0;	1222	coro->slot = 0;
885	}	1223	}
886		1224
887	cctx_destroy (coro->cctx);	1225	cctx_destroy (coro->cctx);
888	SvREFCNT_dec (coro->args);	1226	SvREFCNT_dec (coro->args);
889		1227
		1228	if (coro->next) coro->next->prev = coro->prev;
		1229	if (coro->prev) coro->prev->next = coro->next;
		1230	if (coro == coro_first) coro_first = coro->next;
		1231
890	return 1;	1232	return 1;
891	}	1233	}
892		1234
893	static int	1235	static int
894	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1236	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
895	{	1237	{
896	struct coro *coro = (struct coro *)mg->mg_ptr;	1238	struct coro *coro = (struct coro *)mg->mg_ptr;
897	mg->mg_ptr = 0;	1239	mg->mg_ptr = 0;
		1240
		1241	coro->hv = 0;
898		1242
899	if (--coro->refcnt < 0)	1243	if (--coro->refcnt < 0)
900	{	1244	{
901	coro_state_destroy (aTHX_ coro);	1245	coro_state_destroy (aTHX_ coro);
902	Safefree (coro);	1246	Safefree (coro);
…		…
924	#else	1268	#else
925	# define MGf_DUP 0	1269	# define MGf_DUP 0
926	#endif	1270	#endif
927	};	1271	};
928		1272
929	static struct coro *
930	SvSTATE_ (pTHX_ SV *coro)
931	{
932	HV *stash;
933	MAGIC *mg;
934
935	if (SvROK (coro))
936	coro = SvRV (coro);
937
938	stash = SvSTASH (coro);
939	if (stash != coro_stash && stash != coro_state_stash)
940	{
941	/* very slow, but rare, check */
942	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
943	croak ("Coro::State object required");
944	}
945
946	mg = CORO_MAGIC (coro);
947	return (struct coro *)mg->mg_ptr;
948	}
949
950	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
951
952	static void	1273	static void
953	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)	1274	prepare_transfer (pTHX_ struct transfer_args *ta, SV *prev_sv, SV *next_sv)
954	{	1275	{
955	ta->prev = SvSTATE (prev_sv);	1276	ta->prev = SvSTATE (prev_sv);
956	ta->next = SvSTATE (next_sv);	1277	ta->next = SvSTATE (next_sv);
		1278	TRANSFER_CHECK (*ta);
957	}	1279	}
958		1280
959	static void	1281	static void
960	api_transfer (SV *prev_sv, SV *next_sv)	1282	api_transfer (SV *prev_sv, SV *next_sv)
961	{	1283	{
962	dTHX;	1284	dTHX;
963	struct transfer_args ta;	1285	struct transfer_args ta;
964		1286
965	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1287	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
966	TRANSFER (ta);	1288	TRANSFER (ta);
967	}
968
969	static int
970	api_save (SV *coro_sv, int new_save)
971	{
972	dTHX;
973	struct coro *coro = SvSTATE (coro_sv);
974	int old_save = coro->save;
975
976	if (new_save >= 0)
977	coro->save = new_save;
978
979	return old_save;
980	}	1289	}
981		1290
982	/** Coro ********************************************************************/	1291	/** Coro ********************************************************************/
983		1292
984	static void	1293	static void
…		…
1043	{	1352	{
1044	LOCK;	1353	LOCK;
1045	next_sv = coro_deq (aTHX_ PRIO_MIN);	1354	next_sv = coro_deq (aTHX_ PRIO_MIN);
1046		1355
1047	/* nothing to schedule: call the idle handler */	1356	/* nothing to schedule: call the idle handler */
1048	if (!next_sv)	1357	if (expect_false (!next_sv))
1049	{	1358	{
1050	dSP;	1359	dSP;
1051	UNLOCK;	1360	UNLOCK;
1052		1361
1053	ENTER;	1362	ENTER;
…		…
1063	}	1372	}
1064		1373
1065	ta->next = SvSTATE (next_sv);	1374	ta->next = SvSTATE (next_sv);
1066		1375
1067	/* cannot transfer to destroyed coros, skip and look for next */	1376	/* cannot transfer to destroyed coros, skip and look for next */
1068	if (ta->next->flags & CF_DESTROYED)	1377	if (expect_false (ta->next->flags & CF_DESTROYED))
1069	{	1378	{
1070	UNLOCK;	1379	UNLOCK;
1071	SvREFCNT_dec (next_sv);	1380	SvREFCNT_dec (next_sv);
1072	/* coro_nready is already taken care of by destroy */	1381	/* coro_nready is already taken care of by destroy */
1073	continue;	1382	continue;
…		…
1078	break;	1387	break;
1079	}	1388	}
1080		1389
1081	/* free this only after the transfer */	1390	/* free this only after the transfer */
1082	prev_sv = SvRV (coro_current);	1391	prev_sv = SvRV (coro_current);
1083	SvRV_set (coro_current, next_sv);
1084	ta->prev = SvSTATE (prev_sv);	1392	ta->prev = SvSTATE (prev_sv);
1085		1393	TRANSFER_CHECK (*ta);
1086	assert (ta->next->flags & CF_READY);	1394	assert (ta->next->flags & CF_READY);
1087	ta->next->flags &= ~CF_READY;	1395	ta->next->flags &= ~CF_READY;
		1396	SvRV_set (coro_current, next_sv);
1088		1397
1089	LOCK;	1398	LOCK;
1090	free_coro_mortal (aTHX);	1399	free_coro_mortal (aTHX);
1091	coro_mortal = prev_sv;	1400	coro_mortal = prev_sv;
1092	UNLOCK;	1401	UNLOCK;
…		…
1129	dTHX;	1438	dTHX;
1130	struct transfer_args ta;	1439	struct transfer_args ta;
1131		1440
1132	prepare_cede (aTHX_ &ta);	1441	prepare_cede (aTHX_ &ta);
1133		1442
1134	if (ta.prev != ta.next)	1443	if (expect_true (ta.prev != ta.next))
1135	{	1444	{
1136	TRANSFER (ta);	1445	TRANSFER (ta);
1137	return 1;	1446	return 1;
1138	}	1447	}
1139	else	1448	else
…		…
1153	}	1462	}
1154	else	1463	else
1155	return 0;	1464	return 0;
1156	}	1465	}
1157		1466
		1467	static void
		1468	api_trace (SV *coro_sv, int flags)
		1469	{
		1470	dTHX;
		1471	struct coro *coro = SvSTATE (coro_sv);
		1472
		1473	if (flags & CC_TRACE)
		1474	{
		1475	if (!coro->cctx)
		1476	coro->cctx = cctx_new ();
		1477	else if (!(coro->cctx->flags & CC_TRACE))
		1478	croak ("cannot enable tracing on coroutine with custom stack");
		1479
		1480	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
		1481	}
		1482	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
		1483	{
		1484	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
		1485
		1486	if (coro->flags & CF_RUNNING)
		1487	PL_runops = RUNOPS_DEFAULT;
		1488	else
		1489	coro->slot->runops = RUNOPS_DEFAULT;
		1490	}
		1491	}
		1492
1158	MODULE = Coro::State PACKAGE = Coro::State	1493	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1159		1494
1160	PROTOTYPES: DISABLE	1495	PROTOTYPES: DISABLE
1161		1496
1162	BOOT:	1497	BOOT:
1163	{	1498	{
1164	#ifdef USE_ITHREADS	1499	#ifdef USE_ITHREADS
1165	MUTEX_INIT (&coro_mutex);	1500	MUTEX_INIT (&coro_mutex);
1166	#endif	1501	#endif
1167	BOOT_PAGESIZE;	1502	BOOT_PAGESIZE;
1168		1503
		1504	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1505	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1506
		1507	hv_sig = coro_get_hv ("SIG", TRUE);
		1508	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
		1509	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
		1510
		1511	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
		1512	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
		1513
1169	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1514	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1170		1515
1171	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1516	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1172	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1173	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1174	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1175	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1176	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1177	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1178		1520
1179	main_mainstack = PL_mainstack;	1521	main_mainstack = PL_mainstack;
		1522	main_top_env = PL_top_env;
		1523
		1524	while (main_top_env->je_prev)
		1525	main_top_env = main_top_env->je_prev;
1180		1526
1181	coroapi.ver = CORO_API_VERSION;	1527	coroapi.ver = CORO_API_VERSION;
1182	coroapi.transfer = api_transfer;	1528	coroapi.transfer = api_transfer;
1183		1529
1184	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1530	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
…		…
1191	struct coro *coro;	1537	struct coro *coro;
1192	HV *hv;	1538	HV *hv;
1193	int i;	1539	int i;
1194		1540
1195	Newz (0, coro, 1, struct coro);	1541	Newz (0, coro, 1, struct coro);
1196	coro->args = newAV ();	1542	coro->args = newAV ();
1197	coro->save = CORO_SAVE_DEF;
1198	coro->flags = CF_NEW;	1543	coro->flags = CF_NEW;
1199		1544
		1545	if (coro_first) coro_first->prev = coro;
		1546	coro->next = coro_first;
		1547	coro_first = coro;
		1548
1200	hv = newHV ();	1549	coro->hv = hv = newHV ();
1201	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1550	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1202	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1551	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1203		1552
		1553	av_extend (coro->args, items - 1);
1204	for (i = 1; i < items; i++)	1554	for (i = 1; i < items; i++)
1205	av_push (coro->args, newSVsv (ST (i)));	1555	av_push (coro->args, newSVsv (ST (i)));
1206	}	1556	}
1207	OUTPUT:	1557	OUTPUT:
1208	RETVAL	1558	RETVAL
1209		1559
1210	int	1560	# these not obviously related functions are all rolled into the same xs
1211	save (SV *coro, int new_save = -1)	1561	# function to increase chances that they all will call transfer with the same
1212	CODE:	1562	# stack offset
1213	RETVAL = api_save (coro, new_save);
1214	OUTPUT:
1215	RETVAL
1216
1217	int
1218	save_also (SV *coro_sv, int save_also)
1219	CODE:
1220	{
1221	struct coro *coro = SvSTATE (coro_sv);
1222	RETVAL = coro->save;
1223	coro->save |= save_also;
1224	}
1225	OUTPUT:
1226	RETVAL
1227
1228	void	1563	void
1229	_set_stacklevel (...)	1564	_set_stacklevel (...)
1230	ALIAS:	1565	ALIAS:
1231	Coro::State::transfer = 1	1566	Coro::State::transfer = 1
1232	Coro::schedule = 2	1567	Coro::schedule = 2
1233	Coro::cede = 3	1568	Coro::cede = 3
1234	Coro::cede_notself = 4	1569	Coro::cede_notself = 4
		1570	Coro::Event::next = 5
		1571	Coro::Event::next_cancel = 6
1235	CODE:	1572	PPCODE:
1236	{	1573	{
1237	struct transfer_args ta;	1574	struct transfer_args ta;
		1575	int again = 0;
1238		1576
1239	switch (ix)	1577	do
1240	{	1578	{
		1579	switch (ix)
		1580	{
1241	case 0:	1581	case 0:
1242	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1582	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1243	ta.next = 0;	1583	ta.next = 0;
1244	break;	1584	break;
1245		1585
1246	case 1:	1586	case 1:
1247	if (items != 2)	1587	if (items != 2)
1248	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1588	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1249		1589
1250	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1590	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1251	break;	1591	break;
1252		1592
1253	case 2:	1593	case 2:
1254	prepare_schedule (aTHX_ &ta);	1594	prepare_schedule (aTHX_ &ta);
1255	break;	1595	break;
1256		1596
1257	case 3:	1597	case 3:
1258	prepare_cede (aTHX_ &ta);	1598	prepare_cede (aTHX_ &ta);
1259	break;	1599	break;
1260		1600
1261	case 4:	1601	case 4:
1262	if (!prepare_cede_notself (aTHX_ &ta))	1602	if (!prepare_cede_notself (aTHX_ &ta))
1263	XSRETURN_EMPTY;	1603	XSRETURN_EMPTY;
1264		1604
1265	break;	1605	break;
		1606
		1607	case 5:
		1608	case 6:
		1609	if (items != 1)
		1610	croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
		1611
		1612	{
		1613	SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
		1614
		1615	if (ev)
		1616	{
		1617	if (GIMME_V != G_VOID)
		1618	{
		1619	XPUSHs (ev);
		1620	XSRETURN (1);
		1621	}
		1622	else
		1623	XSRETURN_EMPTY;
		1624	}
		1625	}
		1626
		1627	prepare_schedule (aTHX_ &ta);
		1628	again = 1;
		1629	break;
		1630	}
		1631
		1632	BARRIER;
		1633	TRANSFER (ta);
		1634	BARRIER;
1266	}	1635	}
		1636	while (again);
1267		1637
1268	BARRIER;
1269	TRANSFER (ta);
1270
1271	if (GIMME_V != G_VOID && ta.next != ta.prev)	1638	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1272	XSRETURN_YES;	1639	XSRETURN_YES;
1273	}	1640
		1641	XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */
1274		1642
1275	bool	1643	bool
1276	_destroy (SV *coro_sv)	1644	_destroy (SV *coro_sv)
1277	CODE:	1645	CODE:
1278	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1646	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
…		…
1307	CODE:	1675	CODE:
1308	RETVAL = cctx_idle;	1676	RETVAL = cctx_idle;
1309	OUTPUT:	1677	OUTPUT:
1310	RETVAL	1678	RETVAL
1311		1679
		1680	void
		1681	list ()
		1682	PPCODE:
		1683	{
		1684	struct coro *coro;
		1685	for (coro = coro_first; coro; coro = coro->next)
		1686	if (coro->hv)
		1687	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1688	}
		1689
		1690	void
		1691	call (Coro::State coro, SV *coderef)
		1692	ALIAS:
		1693	eval = 1
		1694	CODE:
		1695	{
		1696	if (coro->mainstack)
		1697	{
		1698	struct coro temp;
		1699
		1700	if (!(coro->flags & CF_RUNNING))
		1701	{
		1702	save_perl (aTHX_ &temp);
		1703	load_perl (aTHX_ coro);
		1704	}
		1705
		1706	{
		1707	dSP;
		1708	ENTER;
		1709	SAVETMPS;
		1710	PUTBACK;
		1711	PUSHSTACK;
		1712	PUSHMARK (SP);
		1713
		1714	if (ix)
		1715	eval_sv (coderef, 0);
		1716	else
		1717	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1718
		1719	POPSTACK;
		1720	FREETMPS;
		1721	LEAVE;
		1722	}
		1723
		1724	if (!(coro->flags & CF_RUNNING))
		1725	{
		1726	save_perl (aTHX_ coro);
		1727	load_perl (aTHX_ &temp);
		1728	}
		1729	}
		1730	}
		1731
		1732	SV *
		1733	is_ready (Coro::State coro)
		1734	PROTOTYPE: $
		1735	ALIAS:
		1736	is_ready = CF_READY
		1737	is_running = CF_RUNNING
		1738	is_new = CF_NEW
		1739	is_destroyed = CF_DESTROYED
		1740	CODE:
		1741	RETVAL = boolSV (coro->flags & ix);
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745	void
		1746	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1747
		1748	SV *
		1749	has_stack (Coro::State coro)
		1750	PROTOTYPE: $
		1751	CODE:
		1752	RETVAL = boolSV (!!coro->cctx);
		1753	OUTPUT:
		1754	RETVAL
		1755
		1756	int
		1757	is_traced (Coro::State coro)
		1758	PROTOTYPE: $
		1759	CODE:
		1760	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1761	OUTPUT:
		1762	RETVAL
		1763
		1764	IV
		1765	rss (Coro::State coro)
		1766	PROTOTYPE: $
		1767	ALIAS:
		1768	usecount = 1
		1769	CODE:
		1770	switch (ix)
		1771	{
		1772	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1773	case 1: RETVAL = coro->usecount; break;
		1774	}
		1775	OUTPUT:
		1776	RETVAL
		1777
		1778
1312	MODULE = Coro::State PACKAGE = Coro	1779	MODULE = Coro::State PACKAGE = Coro
1313		1780
1314	BOOT:	1781	BOOT:
1315	{	1782	{
1316	int i;	1783	int i;
1317		1784
		1785	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1786	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1787	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1788
		1789	coro_current = coro_get_sv ("Coro::current", FALSE);
		1790	SvREADONLY_on (coro_current);
		1791
1318	coro_stash = gv_stashpv ("Coro", TRUE);	1792	coro_stash = gv_stashpv ("Coro", TRUE);
1319		1793
1320	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1794	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1321	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1795	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1322	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1796	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1323	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1797	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1324	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1798	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1325	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1799	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1326		1800
1327	coro_current = get_sv ("Coro::current", FALSE);
1328	SvREADONLY_on (coro_current);
1329
1330	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1801	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1331	coro_ready[i] = newAV ();	1802	coro_ready[i] = newAV ();
1332		1803
1333	{	1804	{
1334	SV *sv = perl_get_sv("Coro::API", 1);	1805	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1806	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1335		1807
1336	coroapi.schedule = api_schedule;	1808	coroapi.schedule = api_schedule;
1337	coroapi.save = api_save;
1338	coroapi.cede = api_cede;	1809	coroapi.cede = api_cede;
1339	coroapi.cede_notself = api_cede_notself;	1810	coroapi.cede_notself = api_cede_notself;
1340	coroapi.ready = api_ready;	1811	coroapi.ready = api_ready;
1341	coroapi.is_ready = api_is_ready;	1812	coroapi.is_ready = api_is_ready;
1342	coroapi.nready = &coro_nready;	1813	coroapi.nready = &coro_nready;
…		…
1383	CODE:	1854	CODE:
1384	RETVAL = boolSV (api_ready (self));	1855	RETVAL = boolSV (api_ready (self));
1385	OUTPUT:	1856	OUTPUT:
1386	RETVAL	1857	RETVAL
1387		1858
1388	SV *
1389	is_ready (SV *self)
1390	PROTOTYPE: $
1391	CODE:
1392	RETVAL = boolSV (api_is_ready (self));
1393	OUTPUT:
1394	RETVAL
1395
1396	int	1859	int
1397	nready (...)	1860	nready (...)
1398	PROTOTYPE:	1861	PROTOTYPE:
1399	CODE:	1862	CODE:
1400	RETVAL = coro_nready;	1863	RETVAL = coro_nready;
1401	OUTPUT:	1864	OUTPUT:
1402	RETVAL	1865	RETVAL
1403		1866
		1867	void
		1868	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1869	PROTOTYPE: $;$
		1870	CODE:
		1871	SvREFCNT_dec (self->throw);
		1872	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1873
		1874	# for async_pool speedup
		1875	void
		1876	_pool_1 (SV *cb)
		1877	CODE:
		1878	{
		1879	struct coro *coro = SvSTATE (coro_current);
		1880	HV *hv = (HV *)SvRV (coro_current);
		1881	AV *defav = GvAV (PL_defgv);
		1882	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1883	AV *invoke_av;
		1884	int i, len;
		1885
		1886	if (!invoke)
		1887	croak ("\3async_pool terminate\2\n");
		1888
		1889	SvREFCNT_dec (coro->saved_deffh);
		1890	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1891
		1892	hv_store (hv, "desc", sizeof ("desc") - 1,
		1893	newSVpvn (strpair ("[async_pool]")), 0);
		1894
		1895	invoke_av = (AV *)SvRV (invoke);
		1896	len = av_len (invoke_av);
		1897
		1898	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1899
		1900	if (len > 0)
		1901	{
		1902	av_fill (defav, len - 1);
		1903	for (i = 0; i < len; ++i)
		1904	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1905	}
		1906
		1907	SvREFCNT_dec (invoke);
		1908	}
		1909
		1910	void
		1911	_pool_2 (SV *cb)
		1912	CODE:
		1913	{
		1914	struct coro *coro = SvSTATE (coro_current);
		1915
		1916	sv_setsv (cb, &PL_sv_undef);
		1917
		1918	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1919	coro->saved_deffh = 0;
		1920
		1921	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1922	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1923	croak ("\3async_pool terminate\2\n");
		1924
		1925	av_clear (GvAV (PL_defgv));
		1926	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1927	newSVpvn (strpair ("[async_pool idle]")), 0);
		1928
		1929	coro->prio = 0;
		1930
		1931	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1932	api_trace (coro_current, 0);
		1933
		1934	av_push (av_async_pool, newSVsv (coro_current));
		1935	}
		1936
		1937
1404	MODULE = Coro::State PACKAGE = Coro::AIO	1938	MODULE = Coro::State PACKAGE = Coro::AIO
1405		1939
1406	SV *	1940	SV *
1407	_get_state ()	1941	_get_state ()
1408	CODE:	1942	CODE:

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