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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.150 by root, Wed Jun 13 21:04:48 2007 UTC vs.
Revision 1.204 by root, Mon Oct 8 03:03:39 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;
…		…
133	static AV *main_mainstack; /* used to differentiate between $main and others */	148	static AV *main_mainstack; /* used to differentiate between $main and others */
134	static JMPENV *main_top_env;	149	static JMPENV *main_top_env;
135	static HV *coro_state_stash, *coro_stash;	150	static HV *coro_state_stash, *coro_stash;
136	static SV *coro_mortal; /* will be freed after next transfer */	151	static SV *coro_mortal; /* will be freed after next transfer */
137		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
138	static struct coro_cctx *cctx_first;	165	static struct coro_cctx *cctx_first;
139	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	};
140		176
141	/* this is a structure representing a c-level coroutine */	177	/* this is a structure representing a c-level coroutine */
142	typedef struct coro_cctx {	178	typedef struct coro_cctx {
143	struct coro_cctx *next;	179	struct coro_cctx *next;
144		180
…		…
153	coro_context cctx;	189	coro_context cctx;
154		190
155	#if CORO_USE_VALGRIND	191	#if CORO_USE_VALGRIND
156	int valgrind_id;	192	int valgrind_id;
157	#endif	193	#endif
158	char inuse, mapped;	194	unsigned char flags;
159	} coro_cctx;	195	} coro_cctx;
160		196
161	enum {	197	enum {
162	CF_RUNNING = 0x0001, /* coroutine is running */	198	CF_RUNNING = 0x0001, /* coroutine is running */
163	CF_READY = 0x0002, /* coroutine is ready */	199	CF_READY = 0x0002, /* coroutine is ready */
164	CF_NEW = 0x0004, /* has never been switched to */	200	CF_NEW = 0x0004, /* has never been switched to */
165	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	201	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
166	};	202	};
167		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
168	/* this is a structure representing a perl-level coroutine */	217	/* this is a structure representing a perl-level coroutine */
169	struct coro {	218	struct coro {
170	/* the c coroutine allocated to this perl coroutine, if any */	219	/* the c coroutine allocated to this perl coroutine, if any */
171	coro_cctx *cctx;	220	coro_cctx *cctx;
172		221
		222	/* process data */
		223	AV *mainstack;
		224	perl_slots *slot; /* basically the saved sp */
		225
173	/* data associated with this coroutine (initial args) */	226	AV *args; /* data associated with this coroutine (initial args) */
174	AV *args;	227	int refcnt; /* coroutines are refcounted, yes */
175	int refcnt;
176	int save; /* CORO_SAVE flags */
177	int flags; /* CF_ flags */	228	int flags; /* CF_ flags */
		229	HV *hv; /* the perl hash associated with this coro, if any */
178		230
179	/* optionally saved, might be zero */	231	/* statistics */
180	AV *defav; /* @_ */	232	int usecount; /* number of transfers to this coro */
181	SV *defsv; /* $_ */
182	SV *errsv; /* $@ */
183	GV *deffh; /* default filehandle */
184	SV *irssv; /* $/ */
185	SV *irssv_sv; /* real $/ cache */
186
187	#define VAR(name,type) type name;
188	# include "state.h"
189	#undef VAR
190		233
191	/* coro process data */	234	/* coro process data */
192	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;
193	};	243	};
194		244
195	typedef struct coro *Coro__State;	245	typedef struct coro *Coro__State;
196	typedef struct coro *Coro__State_or_hashref;	246	typedef struct coro *Coro__State_or_hashref;
197		247
…		…
206		256
207	/* for Coro.pm */	257	/* for Coro.pm */
208	static SV *coro_current;	258	static SV *coro_current;
209	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
210	static int coro_nready;	260	static int coro_nready;
		261	static struct coro *coro_first;
211		262
212	/** 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	}
213		294
214	static AV *	295	static AV *
215	coro_clone_padlist (pTHX_ CV *cv)	296	coro_clone_padlist (pTHX_ CV *cv)
216	{	297	{
217	AV *padlist = CvPADLIST (cv);	298	AV *padlist = CvPADLIST (cv);
…		…
281	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \
282	? SvMAGIC (cv) \	363	? SvMAGIC (cv) \
283	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \
284	: 0	365	: 0
285		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
286	/* the next two functions merely cache the padlists */	393	/* the next two functions merely cache the padlists */
287	static void	394	static void
288	get_padlist (pTHX_ CV *cv)	395	get_padlist (pTHX_ CV *cv)
289	{	396	{
290	MAGIC *mg = CORO_MAGIC (cv);	397	MAGIC *mg = CORO_MAGIC (cv);
291	AV *av;	398	AV *av;
292		399
293	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
294	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
295	else	402	else
296	{	403	{
297	#if CORO_PREFER_PERL_FUNCTIONS	404	#if CORO_PREFER_PERL_FUNCTIONS
298	/* this is probably cleaner, but also slower? */	405	/* this is probably cleaner, but also slower? */
…		…
310	put_padlist (pTHX_ CV *cv)	417	put_padlist (pTHX_ CV *cv)
311	{	418	{
312	MAGIC *mg = CORO_MAGIC (cv);	419	MAGIC *mg = CORO_MAGIC (cv);
313	AV *av;	420	AV *av;
314		421
315	if (!mg)	422	if (expect_false (!mg))
316	{	423	{
317	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);	424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
318	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);	425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
319	mg->mg_virtual = &vtbl_coro;	426	mg->mg_virtual = &vtbl_coro;
320	mg->mg_obj = (SV *)newAV ();	427	mg->mg_obj = (SV *)newAV ();
321	}	428	}
322		429
323	av = (AV *)mg->mg_obj;	430	av = (AV *)mg->mg_obj;
324		431
325	if (AvFILLp (av) >= AvMAX (av))	432	if (expect_false (AvFILLp (av) >= AvMAX (av)))
326	av_extend (av, AvMAX (av) + 1);	433	av_extend (av, AvMAX (av) + 1);
327		434
328	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	435	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
329	}	436	}
330		437
331	/** load & save, init *******************************************************/	438	/** load & save, init *******************************************************/
332		439
333	#define SB do {
334	#define SE } while (0)
335
336	#define REPLACE_SV(sv,val) SB SvREFCNT_dec (sv); (sv) = (val); (val) = 0; SE
337
338	static void	440	static void
339	load_perl (pTHX_ Coro__State c)	441	load_perl (pTHX_ Coro__State c)
340	{	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
341	#define VAR(name,type) PL_ ## name = c->name;	453	#define VAR(name,type) PL_ ## name = slot->name;
342	# include "state.h"	454	# include "state.h"
343	#undef VAR	455	#undef VAR
344		456
345	if (c->defav) REPLACE_SV (GvAV (PL_defgv), c->defav);	457	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
346	if (c->defsv) REPLACE_SV (DEFSV , c->defsv);	458	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
347	if (c->errsv) REPLACE_SV (ERRSV , c->errsv);
348	if (c->deffh) REPLACE_SV (PL_defoutgv , c->deffh);
349
350	if (c->irssv)
351	{
352	if (c->irssv == PL_rs || sv_eq (PL_rs, c->irssv))
353	{
354	SvREFCNT_dec (c->irssv);
355	c->irssv = 0;
356	}
357	else
358	{
359	REPLACE_SV (PL_rs, c->irssv);
360	if (!c->irssv_sv) c->irssv_sv = get_sv ("/", 0);
361	sv_setsv (c->irssv_sv, PL_rs);
362	}
363	}
364		459
365	{	460	{
366	dSP;	461	dSP;
		462
367	CV *cv;	463	CV *cv;
368		464
369	/* now do the ugly restore mess */	465	/* now do the ugly restore mess */
370	while ((cv = (CV *)POPs))	466	while (expect_true (cv = (CV *)POPs))
371	{	467	{
372	put_padlist (aTHX_ cv); /* mark this padlist as available */	468	put_padlist (aTHX_ cv); /* mark this padlist as available */
373	CvDEPTH (cv) = PTR2IV (POPs);	469	CvDEPTH (cv) = PTR2IV (POPs);
374	CvPADLIST (cv) = (AV *)POPs;	470	CvPADLIST (cv) = (AV *)POPs;
375	}	471	}
376		472
377	PUTBACK;	473	PUTBACK;
378	}	474	}
379	assert (!PL_comppad || AvARRAY (PL_comppad));//D
380	}	475	}
381		476
382	static void	477	static void
383	save_perl (pTHX_ Coro__State c)	478	save_perl (pTHX_ Coro__State c)
384	{	479	{
385	assert (!PL_comppad || AvARRAY (PL_comppad));//D
386	{	480	{
387	dSP;	481	dSP;
388	I32 cxix = cxstack_ix;	482	I32 cxix = cxstack_ix;
389	PERL_CONTEXT *ccstk = cxstack;	483	PERL_CONTEXT *ccstk = cxstack;
390	PERL_SI *top_si = PL_curstackinfo;	484	PERL_SI *top_si = PL_curstackinfo;
…		…
392	/*	486	/*
393	* 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
394	* (and reinitialize) all cv's in the whole callchain :(	488	* (and reinitialize) all cv's in the whole callchain :(
395	*/	489	*/
396		490
397	EXTEND (SP, 3 + 1);
398	PUSHs (Nullsv);	491	XPUSHs (Nullsv);
399	/* this loop was inspired by pp_caller */	492	/* this loop was inspired by pp_caller */
400	for (;;)	493	for (;;)
401	{	494	{
402	while (cxix >= 0)	495	while (expect_true (cxix >= 0))
403	{	496	{
404	PERL_CONTEXT *cx = &ccstk[cxix--];	497	PERL_CONTEXT *cx = &ccstk[cxix--];
405		498
406	if (CxTYPE (cx) == CXt_SUB)	499	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
407	{	500	{
408	CV *cv = cx->blk_sub.cv;	501	CV *cv = cx->blk_sub.cv;
409		502
410	if (CvDEPTH (cv))	503	if (expect_true (CvDEPTH (cv)))
411	{	504	{
412	EXTEND (SP, 3);	505	EXTEND (SP, 3);
413	PUSHs ((SV *)CvPADLIST (cv));	506	PUSHs ((SV *)CvPADLIST (cv));
414	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));
415	PUSHs ((SV *)cv);	508	PUSHs ((SV *)cv);
…		…
418	get_padlist (aTHX_ cv);	511	get_padlist (aTHX_ cv);
419	}	512	}
420	}	513	}
421	}	514	}
422		515
423	if (top_si->si_type == PERLSI_MAIN)	516	if (expect_true (top_si->si_type == PERLSI_MAIN))
424	break;	517	break;
425		518
426	top_si = top_si->si_prev;	519	top_si = top_si->si_prev;
427	ccstk = top_si->si_cxstack;	520	ccstk = top_si->si_cxstack;
428	cxix = top_si->si_cxix;	521	cxix = top_si->si_cxix;
429	}	522	}
430		523
431	PUTBACK;	524	PUTBACK;
432	}	525	}
433		526
434	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 */
435	c->defsv = c->save & CORO_SAVE_DEFSV ? SvREFCNT_inc (DEFSV) : 0;	528	/* we manually unroll here, as usually 2 slots is enough */
436	c->errsv = c->save & CORO_SAVE_ERRSV ? SvREFCNT_inc (ERRSV) : 0;	529	if (SLOT_COUNT >= 1) CXINC;
437	c->deffh = c->save & CORO_SAVE_DEFFH ? (GV *)SvREFCNT_inc (PL_defoutgv) : 0;	530	if (SLOT_COUNT >= 2) CXINC;
438	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 */
439		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
440	#define VAR(name,type)c->name = PL_ ## name;	549	#define VAR(name,type) slot->name = PL_ ## name;
441	# include "state.h"	550	# include "state.h"
442	#undef VAR	551	#undef VAR
		552	}
443	}	553	}
444		554
445	/*	555	/*
446	* allocate various perl stacks. This is an exact copy	556	* allocate various perl stacks. This is an exact copy
447	* of perl.c:init_stacks, except that it uses less memory	557	* of perl.c:init_stacks, except that it uses less memory
…		…
452	# define coro_init_stacks init_stacks	562	# define coro_init_stacks init_stacks
453	#else	563	#else
454	static void	564	static void
455	coro_init_stacks (pTHX)	565	coro_init_stacks (pTHX)
456	{	566	{
457	PL_curstackinfo = new_stackinfo(128, 1024/sizeof(PERL_CONTEXT));	567	PL_curstackinfo = new_stackinfo(32, 8);
458	PL_curstackinfo->si_type = PERLSI_MAIN;	568	PL_curstackinfo->si_type = PERLSI_MAIN;
459	PL_curstack = PL_curstackinfo->si_stack;	569	PL_curstack = PL_curstackinfo->si_stack;
460	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	570	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
461		571
462	PL_stack_base = AvARRAY(PL_curstack);	572	PL_stack_base = AvARRAY(PL_curstack);
463	PL_stack_sp = PL_stack_base;	573	PL_stack_sp = PL_stack_base;
464	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	574	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
465		575
466	New(50,PL_tmps_stack,128,SV*);	576	New(50,PL_tmps_stack,32,SV*);
467	PL_tmps_floor = -1;	577	PL_tmps_floor = -1;
468	PL_tmps_ix = -1;	578	PL_tmps_ix = -1;
469	PL_tmps_max = 128;	579	PL_tmps_max = 32;
470		580
471	New(54,PL_markstack,32,I32);	581	New(54,PL_markstack,16,I32);
472	PL_markstack_ptr = PL_markstack;	582	PL_markstack_ptr = PL_markstack;
473	PL_markstack_max = PL_markstack + 32;	583	PL_markstack_max = PL_markstack + 16;
474		584
475	#ifdef SET_MARK_OFFSET	585	#ifdef SET_MARK_OFFSET
476	SET_MARK_OFFSET;	586	SET_MARK_OFFSET;
477	#endif	587	#endif
478		588
479	New(54,PL_scopestack,32,I32);	589	New(54,PL_scopestack,8,I32);
480	PL_scopestack_ix = 0;	590	PL_scopestack_ix = 0;
481	PL_scopestack_max = 32;	591	PL_scopestack_max = 8;
482		592
483	New(54,PL_savestack,64,ANY);	593	New(54,PL_savestack,24,ANY);
484	PL_savestack_ix = 0;	594	PL_savestack_ix = 0;
485	PL_savestack_max = 64;	595	PL_savestack_max = 24;
486		596
487	#if !PERL_VERSION_ATLEAST (5,9,0)	597	#if !PERL_VERSION_ATLEAST (5,9,0)
488	New(54,PL_retstack,16,OP*);	598	New(54,PL_retstack,4,OP*);
489	PL_retstack_ix = 0;	599	PL_retstack_ix = 0;
490	PL_retstack_max = 16;	600	PL_retstack_max = 4;
491	#endif	601	#endif
492	}	602	}
493	#endif	603	#endif
494		604
495	/*	605	/*
496	* destroy the stacks, the callchain etc...	606	* destroy the stacks, the callchain etc...
497	*/	607	*/
498	static void	608	static void
499	coro_destroy_stacks (pTHX)	609	coro_destroy_stacks (pTHX)
500	{	610	{
501	if (!IN_DESTRUCT)
502	{
503	/* restore all saved variables and stuff */
504	LEAVE_SCOPE (0);
505	assert (PL_tmps_floor == -1);
506
507	/* free all temporaries */
508	FREETMPS;
509	assert (PL_tmps_ix == -1);
510
511	/* unwind all extra stacks */
512	POPSTACK_TO (PL_mainstack);
513
514	/* unwind main stack */
515	dounwind (-1);
516	}
517
518	while (PL_curstackinfo->si_next)	611	while (PL_curstackinfo->si_next)
519	PL_curstackinfo = PL_curstackinfo->si_next;	612	PL_curstackinfo = PL_curstackinfo->si_next;
520		613
521	while (PL_curstackinfo)	614	while (PL_curstackinfo)
522	{	615	{
…		…
537	#if !PERL_VERSION_ATLEAST (5,9,0)	630	#if !PERL_VERSION_ATLEAST (5,9,0)
538	Safefree (PL_retstack);	631	Safefree (PL_retstack);
539	#endif	632	#endif
540	}	633	}
541		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
542	/** coroutine stack handling ************************************************/	672	/** coroutine stack handling ************************************************/
543		673
544	static void	674	static void
545	setup_coro (pTHX_ struct coro *coro)	675	coro_setup (pTHX_ struct coro *coro)
546	{	676	{
547	/*	677	/*
548	* emulate part of the perl startup here.	678	* emulate part of the perl startup here.
549	*/	679	*/
550	coro_init_stacks (aTHX);	680	coro_init_stacks (aTHX);
551		681
		682	PL_runops = RUNOPS_DEFAULT;
552	PL_curcop = &PL_compiling;	683	PL_curcop = &PL_compiling;
553	PL_in_eval = EVAL_NULL;	684	PL_in_eval = EVAL_NULL;
554	PL_comppad = 0;	685	PL_comppad = 0;
555	PL_curpm = 0;	686	PL_curpm = 0;
		687	PL_curpad = 0;
556	PL_localizing = 0;	688	PL_localizing = 0;
557	PL_dirty = 0;	689	PL_dirty = 0;
558	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);
559		700
560	{	701	{
561	dSP;	702	dSP;
562	LOGOP myop;	703	LOGOP myop;
563		704
564	SvREFCNT_dec (GvAV (PL_defgv));
565	GvAV (PL_defgv) = coro->args; coro->args = 0;
566
567	Zero (&myop, 1, LOGOP);	705	Zero (&myop, 1, LOGOP);
568	myop.op_next = Nullop;	706	myop.op_next = Nullop;
569	myop.op_flags = OPf_WANT_VOID;	707	myop.op_flags = OPf_WANT_VOID;
570		708
571	PUSHMARK (SP);	709	PUSHMARK (SP);
572	XPUSHs (av_shift (GvAV (PL_defgv)));	710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
573	PUTBACK;	711	PUTBACK;
574	PL_op = (OP *)&myop;	712	PL_op = (OP *)&myop;
575	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
576	SPAGAIN;	714	SPAGAIN;
577	}	715	}
578		716
579	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);
580	}	754	}
581		755
582	static void	756	static void
583	free_coro_mortal (pTHX)	757	free_coro_mortal (pTHX)
584	{	758	{
585	if (coro_mortal)	759	if (expect_true (coro_mortal))
586	{	760	{
587	SvREFCNT_dec (coro_mortal);	761	SvREFCNT_dec (coro_mortal);
588	coro_mortal = 0;	762	coro_mortal = 0;
589	}	763	}
		764	}
		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;
590	}	888	}
591		889
592	/* 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 */
593	/* _cctx_init should be careful, as it could be called at almost any time */	891	/* _cctx_init should be careful, as it could be called at almost any time */
594	/* during execution of a perl program */	892	/* during execution of a perl program */
595	static void NOINLINE	893	static void NOINLINE
596	prepare_cctx (pTHX_ coro_cctx *cctx)	894	cctx_prepare (pTHX_ coro_cctx *cctx)
597	{	895	{
598	dSP;	896	dSP;
599	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;
600		903
601	Zero (&myop, 1, LOGOP);	904	Zero (&myop, 1, LOGOP);
602	myop.op_next = PL_op;	905	myop.op_next = PL_op;
603	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	906	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
604		907
…		…
614		917
615	/*	918	/*
616	* this is a _very_ stripped down perl interpreter ;)	919	* this is a _very_ stripped down perl interpreter ;)
617	*/	920	*/
618	static void	921	static void
619	coro_run (void *arg)	922	cctx_run (void *arg)
620	{	923	{
621	dTHX;	924	dTHX;
622		925
623	/* coro_run is the alternative tail of transfer(), so unlock here. */	926	/* cctx_run is the alternative tail of transfer(), so unlock here. */
624	UNLOCK;	927	UNLOCK;
625		928
626	PL_top_env = &PL_start_env;	929	/* we now skip the entersub that lead to transfer() */
		930	PL_op = PL_op->op_next;
627		931
628	/* inject a fake subroutine call to cctx_init */	932	/* inject a fake subroutine call to cctx_init */
629	prepare_cctx (aTHX_ (coro_cctx *)arg);	933	cctx_prepare (aTHX_ (coro_cctx *)arg);
630		934
631	/* somebody or something will hit me for both perl_run and PL_restartop */	935	/* somebody or something will hit me for both perl_run and PL_restartop */
632	PL_restartop = PL_op;	936	PL_restartop = PL_op;
633	perl_run (PL_curinterp);	937	perl_run (PL_curinterp);
634		938
…		…
653	++cctx_count;	957	++cctx_count;
654		958
655	Newz (0, cctx, 1, coro_cctx);	959	Newz (0, cctx, 1, coro_cctx);
656		960
657	#if HAVE_MMAP	961	#if HAVE_MMAP
658
659	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;
660	/* mmap supposedly does allocate-on-write for us */	963	/* mmap supposedly does allocate-on-write for us */
661	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);
662		965
663	if (cctx->sptr != (void *)-1)	966	if (cctx->sptr != (void *)-1)
…		…
665	# if CORO_STACKGUARD	968	# if CORO_STACKGUARD
666	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	969	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
667	# endif	970	# endif
668	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	971	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;
669	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	972	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
670	cctx->mapped = 1;	973	cctx->flags |= CC_MAPPED;
671	}	974	}
672	else	975	else
673	#endif	976	#endif
674	{	977	{
675	cctx->ssize = coro_stacksize * (long)sizeof (long);	978	cctx->ssize = coro_stacksize * (long)sizeof (long);
…		…
684	stack_start = cctx->sptr;	987	stack_start = cctx->sptr;
685	stack_size = cctx->ssize;	988	stack_size = cctx->ssize;
686	}	989	}
687		990
688	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	991	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
689	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);
690		993
691	return cctx;	994	return cctx;
692	}	995	}
693		996
694	static void	997	static void
…		…
702	#if CORO_USE_VALGRIND	1005	#if CORO_USE_VALGRIND
703	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
704	#endif	1007	#endif
705		1008
706	#if HAVE_MMAP	1009	#if HAVE_MMAP
707	if (cctx->mapped)	1010	if (cctx->flags & CC_MAPPED)
708	munmap (cctx->sptr, cctx->ssize);	1011	munmap (cctx->sptr, cctx->ssize);
709	else	1012	else
710	#endif	1013	#endif
711	Safefree (cctx->sptr);	1014	Safefree (cctx->sptr);
712		1015
713	Safefree (cctx);	1016	Safefree (cctx);
714	}	1017	}
715		1018
		1019	/* wether this cctx should be destructed */
		1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))
		1021
716	static coro_cctx *	1022	static coro_cctx *
717	cctx_get (pTHX)	1023	cctx_get (pTHX)
718	{	1024	{
719	while (cctx_first)	1025	while (expect_true (cctx_first))
720	{	1026	{
721	coro_cctx *cctx = cctx_first;	1027	coro_cctx *cctx = cctx_first;
722	cctx_first = cctx->next;	1028	cctx_first = cctx->next;
723	--cctx_idle;	1029	--cctx_idle;
724		1030
725	if (cctx->ssize >= coro_stacksize)	1031	if (expect_true (!CCTX_EXPIRED (cctx)))
726	return cctx;	1032	return cctx;
727		1033
728	cctx_destroy (cctx);	1034	cctx_destroy (cctx);
729	}	1035	}
730		1036
731	PL_op = PL_op->op_next;
732	return cctx_new ();	1037	return cctx_new ();
733	}	1038	}
734		1039
735	static void	1040	static void
736	cctx_put (coro_cctx *cctx)	1041	cctx_put (coro_cctx *cctx)
737	{	1042	{
738	/* free another cctx if overlimit */	1043	/* free another cctx if overlimit */
739	if (cctx_idle >= MAX_IDLE_CCTX)	1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))
740	{	1045	{
741	coro_cctx *first = cctx_first;	1046	coro_cctx *first = cctx_first;
742	cctx_first = first->next;	1047	cctx_first = first->next;
743	--cctx_idle;	1048	--cctx_idle;
744		1049
745	assert (!first->inuse);
746	cctx_destroy (first);	1050	cctx_destroy (first);
747	}	1051	}
748		1052
749	++cctx_idle;	1053	++cctx_idle;
750	cctx->next = cctx_first;	1054	cctx->next = cctx_first;
751	cctx_first = cctx;	1055	cctx_first = cctx;
752	}	1056	}
753		1057
754	/** coroutine switching *****************************************************/	1058	/** coroutine switching *****************************************************/
755		1059
756	/* 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 */
757	static void NOINLINE	1086	static void NOINLINE
758	transfer (pTHX_ struct coro *prev, struct coro *next)	1087	transfer (pTHX_ struct coro *prev, struct coro *next)
759	{	1088	{
760	dSTACKLEVEL;	1089	dSTACKLEVEL;
761		1090
762	/* sometimes transfer is only called to set idle_sp */	1091	/* sometimes transfer is only called to set idle_sp */
763	if (!next)	1092	if (expect_false (!next))
764	{	1093	{
765	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
766	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 */
767	}	1096	}
768	else if (prev != next)	1097	else if (expect_true (prev != next))
769	{	1098	{
770	coro_cctx *prev__cctx;	1099	coro_cctx *prev__cctx;
771		1100
772	if (prev->flags & CF_NEW)	1101	if (expect_false (prev->flags & CF_NEW))
773	{	1102	{
774	/* create a new empty context */	1103	/* create a new empty context */
775	Newz (0, prev->cctx, 1, coro_cctx);	1104	Newz (0, prev->cctx, 1, coro_cctx);
776	prev->cctx->inuse = 1;
777	prev->flags &= ~CF_NEW;	1105	prev->flags &= ~CF_NEW;
778	prev->flags |= CF_RUNNING;	1106	prev->flags |= CF_RUNNING;
779	}	1107	}
780		1108
781	/*TODO: must not croak here */
782	if (!prev->flags & CF_RUNNING)
783	croak ("Coro::State::transfer called with non-running prev Coro::State, but can only transfer from running states");
784
785	if (next->flags & CF_RUNNING)
786	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
787
788	if (next->flags & CF_DESTROYED)
789	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
790
791	prev->flags &= ~CF_RUNNING;	1109	prev->flags &= ~CF_RUNNING;
792	next->flags |= CF_RUNNING;	1110	next->flags |= CF_RUNNING;
793		1111
794	LOCK;	1112	LOCK;
795		1113
796	if (next->flags & CF_NEW)	1114	if (expect_false (next->flags & CF_NEW))
797	{	1115	{
798	/* need to start coroutine */	1116	/* need to start coroutine */
799	next->flags &= ~CF_NEW;	1117	next->flags &= ~CF_NEW;
800	/* first get rid of the old state */	1118	/* first get rid of the old state */
801	save_perl (aTHX_ prev);	1119	save_perl (aTHX_ prev);
802	/* setup coroutine call */	1120	/* setup coroutine call */
803	setup_coro (aTHX_ next);	1121	coro_setup (aTHX_ next);
804	/* need a new stack */
805	assert (!next->cctx);
806	}	1122	}
807	else	1123	else
808	{	1124	{
809	/* coroutine already started */	1125	/* coroutine already started */
810	save_perl (aTHX_ prev);	1126	save_perl (aTHX_ prev);
…		…
812	}	1128	}
813		1129
814	prev__cctx = prev->cctx;	1130	prev__cctx = prev->cctx;
815		1131
816	/* possibly "free" the cctx */	1132	/* possibly "free" the cctx */
817	if (prev__cctx->idle_sp == STACKLEVEL)	1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))
818	{	1134	{
819	/* 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 */
820	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));
821		1137
822	prev->cctx = 0;	1138	prev->cctx = 0;
823		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
824	cctx_put (prev__cctx);	1146	cctx_put (prev__cctx);
825	prev__cctx->inuse = 0;
826	}	1147	}
827		1148
		1149	++next->usecount;
		1150
828	if (!next->cctx)	1151	if (expect_true (!next->cctx))
829	{
830	next->cctx = cctx_get (aTHX);	1152	next->cctx = cctx_get (aTHX);
831	assert (!next->cctx->inuse);
832	next->cctx->inuse = 1;
833	}
834		1153
835	if (prev__cctx != next->cctx)	1154	if (expect_false (prev__cctx != next->cctx))
836	{	1155	{
837	prev__cctx->top_env = PL_top_env;	1156	prev__cctx->top_env = PL_top_env;
838	PL_top_env = next->cctx->top_env;	1157	PL_top_env = next->cctx->top_env;
839	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1158	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
840	}	1159	}
841		1160
842	free_coro_mortal (aTHX);	1161	free_coro_mortal (aTHX);
843	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	}
844	}	1176	}
845	}	1177	}
846		1178
847	struct transfer_args	1179	struct transfer_args
848	{	1180	{
849	struct coro *prev, *next;	1181	struct coro *prev, *next;
850	};	1182	};
851		1183
852	#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)
853		1186
854	/** high level stuff ********************************************************/	1187	/** high level stuff ********************************************************/
855		1188
856	static int	1189	static int
857	coro_state_destroy (pTHX_ struct coro *coro)	1190	coro_state_destroy (pTHX_ struct coro *coro)
…		…
874		1207
875	if (coro->mainstack && coro->mainstack != main_mainstack)	1208	if (coro->mainstack && coro->mainstack != main_mainstack)
876	{	1209	{
877	struct coro temp;	1210	struct coro temp;
878		1211
879	assert (!(coro->flags & CF_RUNNING));
880
881	Zero (&temp, 1, struct coro);
882	temp.save = CORO_SAVE_DEF;
883
884	if (coro->flags & CF_RUNNING)	1212	if (coro->flags & CF_RUNNING)
885	croak ("FATAL: tried to destroy currently running coroutine");	1213	croak ("FATAL: tried to destroy currently running coroutine");
886		1214
887	save_perl (aTHX_ &temp);	1215	save_perl (aTHX_ &temp);
888	load_perl (aTHX_ coro);	1216	load_perl (aTHX_ coro);
889		1217
890	coro_destroy_stacks (aTHX);	1218	coro_destroy (aTHX_ coro);
891		1219
892	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1220	load_perl (aTHX_ &temp);
893		1221
894	coro->mainstack = 0;	1222	coro->slot = 0;
895	}	1223	}
896		1224
897	cctx_destroy (coro->cctx);	1225	cctx_destroy (coro->cctx);
898	SvREFCNT_dec (coro->args);	1226	SvREFCNT_dec (coro->args);
899		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
900	return 1;	1232	return 1;
901	}	1233	}
902		1234
903	static int	1235	static int
904	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1236	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
905	{	1237	{
906	struct coro *coro = (struct coro *)mg->mg_ptr;	1238	struct coro *coro = (struct coro *)mg->mg_ptr;
907	mg->mg_ptr = 0;	1239	mg->mg_ptr = 0;
		1240
		1241	coro->hv = 0;
908		1242
909	if (--coro->refcnt < 0)	1243	if (--coro->refcnt < 0)
910	{	1244	{
911	coro_state_destroy (aTHX_ coro);	1245	coro_state_destroy (aTHX_ coro);
912	Safefree (coro);	1246	Safefree (coro);
…		…
934	#else	1268	#else
935	# define MGf_DUP 0	1269	# define MGf_DUP 0
936	#endif	1270	#endif
937	};	1271	};
938		1272
939	static struct coro *
940	SvSTATE_ (pTHX_ SV *coro)
941	{
942	HV *stash;
943	MAGIC *mg;
944
945	if (SvROK (coro))
946	coro = SvRV (coro);
947
948	stash = SvSTASH (coro);
949	if (stash != coro_stash && stash != coro_state_stash)
950	{
951	/* very slow, but rare, check */
952	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
953	croak ("Coro::State object required");
954	}
955
956	mg = CORO_MAGIC (coro);
957	return (struct coro *)mg->mg_ptr;
958	}
959
960	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
961
962	static void	1273	static void
963	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)
964	{	1275	{
965	ta->prev = SvSTATE (prev_sv);	1276	ta->prev = SvSTATE (prev_sv);
966	ta->next = SvSTATE (next_sv);	1277	ta->next = SvSTATE (next_sv);
		1278	TRANSFER_CHECK (*ta);
967	}	1279	}
968		1280
969	static void	1281	static void
970	api_transfer (SV *prev_sv, SV *next_sv)	1282	api_transfer (SV *prev_sv, SV *next_sv)
971	{	1283	{
972	dTHX;	1284	dTHX;
973	struct transfer_args ta;	1285	struct transfer_args ta;
974		1286
975	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1287	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
976	TRANSFER (ta);	1288	TRANSFER (ta);
977	}
978
979	static int
980	api_save (SV *coro_sv, int new_save)
981	{
982	dTHX;
983	struct coro *coro = SvSTATE (coro_sv);
984	int old_save = coro->save;
985
986	if (new_save >= 0)
987	coro->save = new_save;
988
989	return old_save;
990	}	1289	}
991		1290
992	/** Coro ********************************************************************/	1291	/** Coro ********************************************************************/
993		1292
994	static void	1293	static void
…		…
1053	{	1352	{
1054	LOCK;	1353	LOCK;
1055	next_sv = coro_deq (aTHX_ PRIO_MIN);	1354	next_sv = coro_deq (aTHX_ PRIO_MIN);
1056		1355
1057	/* nothing to schedule: call the idle handler */	1356	/* nothing to schedule: call the idle handler */
1058	if (!next_sv)	1357	if (expect_false (!next_sv))
1059	{	1358	{
1060	dSP;	1359	dSP;
1061	UNLOCK;	1360	UNLOCK;
1062		1361
1063	ENTER;	1362	ENTER;
…		…
1073	}	1372	}
1074		1373
1075	ta->next = SvSTATE (next_sv);	1374	ta->next = SvSTATE (next_sv);
1076		1375
1077	/* cannot transfer to destroyed coros, skip and look for next */	1376	/* cannot transfer to destroyed coros, skip and look for next */
1078	if (ta->next->flags & CF_DESTROYED)	1377	if (expect_false (ta->next->flags & CF_DESTROYED))
1079	{	1378	{
1080	UNLOCK;	1379	UNLOCK;
1081	SvREFCNT_dec (next_sv);	1380	SvREFCNT_dec (next_sv);
1082	/* coro_nready is already taken care of by destroy */	1381	/* coro_nready is already taken care of by destroy */
1083	continue;	1382	continue;
…		…
1088	break;	1387	break;
1089	}	1388	}
1090		1389
1091	/* free this only after the transfer */	1390	/* free this only after the transfer */
1092	prev_sv = SvRV (coro_current);	1391	prev_sv = SvRV (coro_current);
1093	SvRV_set (coro_current, next_sv);
1094	ta->prev = SvSTATE (prev_sv);	1392	ta->prev = SvSTATE (prev_sv);
1095		1393	TRANSFER_CHECK (*ta);
1096	assert (ta->next->flags & CF_READY);	1394	assert (ta->next->flags & CF_READY);
1097	ta->next->flags &= ~CF_READY;	1395	ta->next->flags &= ~CF_READY;
		1396	SvRV_set (coro_current, next_sv);
1098		1397
1099	LOCK;	1398	LOCK;
1100	free_coro_mortal (aTHX);	1399	free_coro_mortal (aTHX);
1101	coro_mortal = prev_sv;	1400	coro_mortal = prev_sv;
1102	UNLOCK;	1401	UNLOCK;
…		…
1139	dTHX;	1438	dTHX;
1140	struct transfer_args ta;	1439	struct transfer_args ta;
1141		1440
1142	prepare_cede (aTHX_ &ta);	1441	prepare_cede (aTHX_ &ta);
1143		1442
1144	if (ta.prev != ta.next)	1443	if (expect_true (ta.prev != ta.next))
1145	{	1444	{
1146	TRANSFER (ta);	1445	TRANSFER (ta);
1147	return 1;	1446	return 1;
1148	}	1447	}
1149	else	1448	else
…		…
1163	}	1462	}
1164	else	1463	else
1165	return 0;	1464	return 0;
1166	}	1465	}
1167		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
1168	MODULE = Coro::State PACKAGE = Coro::State	1493	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1169		1494
1170	PROTOTYPES: DISABLE	1495	PROTOTYPES: DISABLE
1171		1496
1172	BOOT:	1497	BOOT:
1173	{	1498	{
1174	#ifdef USE_ITHREADS	1499	#ifdef USE_ITHREADS
1175	MUTEX_INIT (&coro_mutex);	1500	MUTEX_INIT (&coro_mutex);
1176	#endif	1501	#endif
1177	BOOT_PAGESIZE;	1502	BOOT_PAGESIZE;
1178		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
1179	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1514	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1180		1515
1181	newCONSTSUB (coro_state_stash, "SAVE_DEFAV", newSViv (CORO_SAVE_DEFAV));	1516	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1182	newCONSTSUB (coro_state_stash, "SAVE_DEFSV", newSViv (CORO_SAVE_DEFSV));	1517	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1183	newCONSTSUB (coro_state_stash, "SAVE_ERRSV", newSViv (CORO_SAVE_ERRSV));
1184	newCONSTSUB (coro_state_stash, "SAVE_IRSSV", newSViv (CORO_SAVE_IRSSV));
1185	newCONSTSUB (coro_state_stash, "SAVE_DEFFH", newSViv (CORO_SAVE_DEFFH));
1186	newCONSTSUB (coro_state_stash, "SAVE_DEF", newSViv (CORO_SAVE_DEF));	1518	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1187	newCONSTSUB (coro_state_stash, "SAVE_ALL", newSViv (CORO_SAVE_ALL));	1519	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1188		1520
1189	main_mainstack = PL_mainstack;	1521	main_mainstack = PL_mainstack;
1190	main_top_env = PL_top_env;	1522	main_top_env = PL_top_env;
1191		1523
1192	while (main_top_env->je_prev)	1524	while (main_top_env->je_prev)
…		…
1205	struct coro *coro;	1537	struct coro *coro;
1206	HV *hv;	1538	HV *hv;
1207	int i;	1539	int i;
1208		1540
1209	Newz (0, coro, 1, struct coro);	1541	Newz (0, coro, 1, struct coro);
1210	coro->args = newAV ();	1542	coro->args = newAV ();
1211	coro->save = CORO_SAVE_DEF;
1212	coro->flags = CF_NEW;	1543	coro->flags = CF_NEW;
1213		1544
		1545	if (coro_first) coro_first->prev = coro;
		1546	coro->next = coro_first;
		1547	coro_first = coro;
		1548
1214	hv = newHV ();	1549	coro->hv = hv = newHV ();
1215	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;
1216	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1551	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1217		1552
		1553	av_extend (coro->args, items - 1);
1218	for (i = 1; i < items; i++)	1554	for (i = 1; i < items; i++)
1219	av_push (coro->args, newSVsv (ST (i)));	1555	av_push (coro->args, newSVsv (ST (i)));
1220	}	1556	}
1221	OUTPUT:	1557	OUTPUT:
1222	RETVAL	1558	RETVAL
1223		1559
1224	int	1560	# these not obviously related functions are all rolled into the same xs
1225	save (SV *coro, int new_save = -1)	1561	# function to increase chances that they all will call transfer with the same
1226	CODE:	1562	# stack offset
1227	RETVAL = api_save (coro, new_save);
1228	OUTPUT:
1229	RETVAL
1230
1231	int
1232	save_also (SV *coro_sv, int save_also)
1233	CODE:
1234	{
1235	struct coro *coro = SvSTATE (coro_sv);
1236	RETVAL = coro->save;
1237	coro->save |= save_also;
1238	}
1239	OUTPUT:
1240	RETVAL
1241
1242	void	1563	void
1243	_set_stacklevel (...)	1564	_set_stacklevel (...)
1244	ALIAS:	1565	ALIAS:
1245	Coro::State::transfer = 1	1566	Coro::State::transfer = 1
1246	Coro::schedule = 2	1567	Coro::schedule = 2
…		…
1280	}	1601	}
1281		1602
1282	BARRIER;	1603	BARRIER;
1283	TRANSFER (ta);	1604	TRANSFER (ta);
1284		1605
1285	if (GIMME_V != G_VOID && ta.next != ta.prev)	1606	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1286	XSRETURN_YES;	1607	XSRETURN_YES;
1287	}	1608	}
1288		1609
1289	bool	1610	bool
1290	_destroy (SV *coro_sv)	1611	_destroy (SV *coro_sv)
…		…
1321	CODE:	1642	CODE:
1322	RETVAL = cctx_idle;	1643	RETVAL = cctx_idle;
1323	OUTPUT:	1644	OUTPUT:
1324	RETVAL	1645	RETVAL
1325		1646
		1647	void
		1648	list ()
		1649	PPCODE:
		1650	{
		1651	struct coro *coro;
		1652	for (coro = coro_first; coro; coro = coro->next)
		1653	if (coro->hv)
		1654	XPUSHs (sv_2mortal (newRV_inc ((SV *)coro->hv)));
		1655	}
		1656
		1657	void
		1658	call (Coro::State coro, SV *coderef)
		1659	ALIAS:
		1660	eval = 1
		1661	CODE:
		1662	{
		1663	if (coro->mainstack)
		1664	{
		1665	struct coro temp;
		1666
		1667	if (!(coro->flags & CF_RUNNING))
		1668	{
		1669	save_perl (aTHX_ &temp);
		1670	load_perl (aTHX_ coro);
		1671	}
		1672
		1673	{
		1674	dSP;
		1675	ENTER;
		1676	SAVETMPS;
		1677	PUSHMARK (SP);
		1678	PUTBACK;
		1679
		1680	if (ix)
		1681	eval_sv (coderef, 0);
		1682	else
		1683	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		1684
		1685	SPAGAIN;
		1686	FREETMPS;
		1687	LEAVE;
		1688	PUTBACK;
		1689	}
		1690
		1691	if (!(coro->flags & CF_RUNNING))
		1692	{
		1693	save_perl (aTHX_ coro);
		1694	load_perl (aTHX_ &temp);
		1695	}
		1696	}
		1697	}
		1698
		1699	SV *
		1700	is_ready (Coro::State coro)
		1701	PROTOTYPE: $
		1702	ALIAS:
		1703	is_ready = CF_READY
		1704	is_running = CF_RUNNING
		1705	is_new = CF_NEW
		1706	is_destroyed = CF_DESTROYED
		1707	CODE:
		1708	RETVAL = boolSV (coro->flags & ix);
		1709	OUTPUT:
		1710	RETVAL
		1711
		1712	void
		1713	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
		1714
		1715	SV *
		1716	has_stack (Coro::State coro)
		1717	PROTOTYPE: $
		1718	CODE:
		1719	RETVAL = boolSV (!!coro->cctx);
		1720	OUTPUT:
		1721	RETVAL
		1722
		1723	int
		1724	is_traced (Coro::State coro)
		1725	PROTOTYPE: $
		1726	CODE:
		1727	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
		1728	OUTPUT:
		1729	RETVAL
		1730
		1731	IV
		1732	rss (Coro::State coro)
		1733	PROTOTYPE: $
		1734	ALIAS:
		1735	usecount = 1
		1736	CODE:
		1737	switch (ix)
		1738	{
		1739	case 0: RETVAL = coro_rss (aTHX_ coro); break;
		1740	case 1: RETVAL = coro->usecount; break;
		1741	}
		1742	OUTPUT:
		1743	RETVAL
		1744
		1745
1326	MODULE = Coro::State PACKAGE = Coro	1746	MODULE = Coro::State PACKAGE = Coro
1327		1747
1328	BOOT:	1748	BOOT:
1329	{	1749	{
1330	int i;	1750	int i;
1331		1751
		1752	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
		1753	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
		1754	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);
		1755
		1756	coro_current = coro_get_sv ("Coro::current", FALSE);
		1757	SvREADONLY_on (coro_current);
		1758
1332	coro_stash = gv_stashpv ("Coro", TRUE);	1759	coro_stash = gv_stashpv ("Coro", TRUE);
1333		1760
1334	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	1761	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1335	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	1762	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1336	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	1763	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1337	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	1764	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
1338	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	1765	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));
1339	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	1766	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));
1340		1767
1341	coro_current = get_sv ("Coro::current", FALSE);
1342	SvREADONLY_on (coro_current);
1343
1344	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	1768	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1345	coro_ready[i] = newAV ();	1769	coro_ready[i] = newAV ();
1346		1770
1347	{	1771	{
1348	SV *sv = perl_get_sv("Coro::API", 1);	1772	SV *sv = perl_get_sv ("Coro::API", TRUE);
		1773	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1349		1774
1350	coroapi.schedule = api_schedule;	1775	coroapi.schedule = api_schedule;
1351	coroapi.save = api_save;
1352	coroapi.cede = api_cede;	1776	coroapi.cede = api_cede;
1353	coroapi.cede_notself = api_cede_notself;	1777	coroapi.cede_notself = api_cede_notself;
1354	coroapi.ready = api_ready;	1778	coroapi.ready = api_ready;
1355	coroapi.is_ready = api_is_ready;	1779	coroapi.is_ready = api_is_ready;
1356	coroapi.nready = &coro_nready;	1780	coroapi.nready = &coro_nready;
…		…
1397	CODE:	1821	CODE:
1398	RETVAL = boolSV (api_ready (self));	1822	RETVAL = boolSV (api_ready (self));
1399	OUTPUT:	1823	OUTPUT:
1400	RETVAL	1824	RETVAL
1401		1825
1402	SV *
1403	is_ready (SV *self)
1404	PROTOTYPE: $
1405	CODE:
1406	RETVAL = boolSV (api_is_ready (self));
1407	OUTPUT:
1408	RETVAL
1409
1410	int	1826	int
1411	nready (...)	1827	nready (...)
1412	PROTOTYPE:	1828	PROTOTYPE:
1413	CODE:	1829	CODE:
1414	RETVAL = coro_nready;	1830	RETVAL = coro_nready;
1415	OUTPUT:	1831	OUTPUT:
1416	RETVAL	1832	RETVAL
1417		1833
		1834	void
		1835	throw (Coro::State self, SV *throw = &PL_sv_undef)
		1836	PROTOTYPE: $;$
		1837	CODE:
		1838	SvREFCNT_dec (self->throw);
		1839	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		1840
		1841	# for async_pool speedup
		1842	void
		1843	_pool_1 (SV *cb)
		1844	CODE:
		1845	{
		1846	struct coro *coro = SvSTATE (coro_current);
		1847	HV *hv = (HV *)SvRV (coro_current);
		1848	AV *defav = GvAV (PL_defgv);
		1849	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);
		1850	AV *invoke_av;
		1851	int i, len;
		1852
		1853	if (!invoke)
		1854	croak ("\3async_pool terminate\2\n");
		1855
		1856	SvREFCNT_dec (coro->saved_deffh);
		1857	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);
		1858
		1859	hv_store (hv, "desc", sizeof ("desc") - 1,
		1860	newSVpvn (strpair ("[async_pool]")), 0);
		1861
		1862	invoke_av = (AV *)SvRV (invoke);
		1863	len = av_len (invoke_av);
		1864
		1865	sv_setsv (cb, AvARRAY (invoke_av)[0]);
		1866
		1867	if (len > 0)
		1868	{
		1869	av_fill (defav, len - 1);
		1870	for (i = 0; i < len; ++i)
		1871	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));
		1872	}
		1873
		1874	SvREFCNT_dec (invoke);
		1875	}
		1876
		1877	void
		1878	_pool_2 (SV *cb)
		1879	CODE:
		1880	{
		1881	struct coro *coro = SvSTATE (coro_current);
		1882
		1883	sv_setsv (cb, &PL_sv_undef);
		1884
		1885	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
		1886	coro->saved_deffh = 0;
		1887
		1888	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
		1889	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		1890	croak ("\3async_pool terminate\2\n");
		1891
		1892	av_clear (GvAV (PL_defgv));
		1893	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),
		1894	newSVpvn (strpair ("[async_pool idle]")), 0);
		1895
		1896	coro->prio = 0;
		1897
		1898	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
		1899	api_trace (coro_current, 0);
		1900
		1901	av_push (av_async_pool, newSVsv (coro_current));
		1902	}
		1903
		1904
1418	MODULE = Coro::State PACKAGE = Coro::AIO	1905	MODULE = Coro::State PACKAGE = Coro::AIO
1419		1906
1420	SV *	1907	SV *
1421	_get_state ()	1908	_get_state ()
1422	CODE:	1909	CODE:

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