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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.199 by root, Sun Oct 7 13:53:37 2007 UTC vs.
Revision 1.258 by root, Sun Nov 9 23:08:49 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
14	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
15		25
16	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
17	# include <unistd.h>	27	# include <unistd.h>
18	# include <sys/mman.h>	28	# include <sys/mman.h>
19	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
42	#else	52	#else
43	# define REGISTER_STACK(cctx,start,end)	53	# define REGISTER_STACK(cctx,start,end)
44	#endif	54	#endif
45		55
46	/* the maximum number of idle cctx that will be pooled */	56	/* the maximum number of idle cctx that will be pooled */
47	#define MAX_IDLE_CCTX 8	57	static int cctx_max_idle = 4;
48		58
49	#define PERL_VERSION_ATLEAST(a,b,c) \	59	#define PERL_VERSION_ATLEAST(a,b,c) \
50	(PERL_REVISION > (a) \	60	(PERL_REVISION > (a) \
51	|| (PERL_REVISION == (a) \	61	|| (PERL_REVISION == (a) \
52	&& (PERL_VERSION > (b) \	62	&& (PERL_VERSION > (b) \
…		…
71	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
72	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
73	# endif	83	# endif
74	#endif	84	#endif
75		85
		86	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
76	/* 5.8.7 */	104	/* 5.8.7 */
77	#ifndef SvRV_set	105	#ifndef SvRV_set
78	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
79	#endif
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	107	#endif
88		108
89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	109	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90	# undef CORO_STACKGUARD	110	# undef CORO_STACKGUARD
91	#endif	111	#endif
…		…
122	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
123		143
124	#include "CoroAPI.h"	144	#include "CoroAPI.h"
125		145
126	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
127	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
130	#else	155	#else
		156
131	# define LOCK (void)0	157	# define LOCK (void)0
132	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
133	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
134		166
135	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
136	struct io_state	168	struct io_state
137	{	169	{
		170	AV *res;
138	int errorno;	171	int errorno;
139	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
140	int laststatval;	173	int laststatval;
141	Stat_t statcache;	174	Stat_t statcache;
142	};	175	};
143		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
144	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
145	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
146	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
147	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
148	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
149	static SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
150		186
151	static GV *irsgv; /* $/ */	187	static GV *irsgv; /* $/ */
152	static GV *stdoutgv; /* *STDOUT */	188	static GV *stdoutgv; /* *STDOUT */
153	static SV *sv_diehook;	189	static SV *rv_diehook;
154	static SV *sv_warnhook;	190	static SV *rv_warnhook;
		191	static HV *hv_sig; /* %SIG */
155		192
156	/* async_pool helper stuff */	193	/* async_pool helper stuff */
157	static SV *sv_pool_rss;	194	static SV *sv_pool_rss;
158	static SV *sv_pool_size;	195	static SV *sv_pool_size;
159	static AV *av_async_pool;	196	static AV *av_async_pool;
		197
		198	/* Coro::AnyEvent */
		199	static SV *sv_activity;
160		200
161	static struct coro_cctx *cctx_first;	201	static struct coro_cctx *cctx_first;
162	static int cctx_count, cctx_idle;	202	static int cctx_count, cctx_idle;
163		203
164	enum {	204	enum {
…		…
182	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	222	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
183	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	223	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
184	JMPENV *top_env;	224	JMPENV *top_env;
185	coro_context cctx;	225	coro_context cctx;
186		226
		227	U32 gen;
187	#if CORO_USE_VALGRIND	228	#if CORO_USE_VALGRIND
188	int valgrind_id;	229	int valgrind_id;
189	#endif	230	#endif
190	unsigned char flags;	231	unsigned char flags;
191	} coro_cctx;	232	} coro_cctx;
…		…
217		258
218	/* process data */	259	/* process data */
219	AV *mainstack;	260	AV *mainstack;
220	perl_slots *slot; /* basically the saved sp */	261	perl_slots *slot; /* basically the saved sp */
221		262
222	/* data associated with this coroutine (initial args) */	263	AV *args; /* data associated with this coroutine (initial args) */
223	AV *args;	264	int refcnt; /* coroutines are refcounted, yes */
224	int refcnt;
225	int flags; /* CF_ flags */	265	int flags; /* CF_ flags */
		266	HV *hv; /* the perl hash associated with this coro, if any */
226		267
227	/* statistics */	268	/* statistics */
228	int usecount; /* number of transfers to this coro */	269	int usecount; /* number of transfers to this coro */
229		270
230	/* coro process data */	271	/* coro process data */
231	int prio;	272	int prio;
232	SV *throw;	273	SV *throw; /* exception to be thrown */
233		274
234	/* async_pool */	275	/* async_pool */
235	SV *saved_deffh;	276	SV *saved_deffh;
236		277
237	/* linked list */	278	/* linked list */
238	struct coro *next, *prev;	279	struct coro *next, *prev;
239	HV *hv; /* the perl hash associated with this coro, if any */
240	};	280	};
241		281
242	typedef struct coro *Coro__State;	282	typedef struct coro *Coro__State;
243	typedef struct coro *Coro__State_or_hashref;	283	typedef struct coro *Coro__State_or_hashref;
244		284
…		…
251	#define PRIO_IDLE -3	291	#define PRIO_IDLE -3
252	#define PRIO_MIN -4	292	#define PRIO_MIN -4
253		293
254	/* for Coro.pm */	294	/* for Coro.pm */
255	static SV *coro_current;	295	static SV *coro_current;
		296	static SV *coro_readyhook;
256	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	297	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
257	static int coro_nready;	298	static int coro_nready;
258	static struct coro *coro_first;	299	static struct coro *coro_first;
259		300
260	/** lowlevel stuff **********************************************************/	301	/** lowlevel stuff **********************************************************/
261		302
262	static SV *	303	static SV *
263	coro_get_sv (const char *name, int create)	304	coro_get_sv (pTHX_ const char *name, int create)
264	{	305	{
265	#if PERL_VERSION_ATLEAST (5,9,0)	306	#if PERL_VERSION_ATLEAST (5,10,0)
266	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	307	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
267	get_sv (name, create);	308	get_sv (name, create);
268	#endif	309	#endif
269	return get_sv (name, create);	310	return get_sv (name, create);
270	}	311	}
271		312
272	static SV *	313	static AV *
273	coro_get_av (const char *name, int create)	314	coro_get_av (pTHX_ const char *name, int create)
274	{	315	{
275	#if PERL_VERSION_ATLEAST (5,9,0)	316	#if PERL_VERSION_ATLEAST (5,10,0)
276	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	317	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
277	get_av (name, create);	318	get_av (name, create);
278	#endif	319	#endif
279	return get_av (name, create);	320	return get_av (name, create);
280	}	321	}
281		322
		323	static HV *
		324	coro_get_hv (pTHX_ const char *name, int create)
		325	{
		326	#if PERL_VERSION_ATLEAST (5,10,0)
		327	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		328	get_hv (name, create);
		329	#endif
		330	return get_hv (name, create);
		331	}
		332
282	static AV *	333	static AV *
283	coro_clone_padlist (pTHX_ CV *cv)	334	coro_clone_padlist (pTHX_ CV *cv)
284	{	335	{
285	AV *padlist = CvPADLIST (cv);	336	AV *padlist = CvPADLIST (cv);
286	AV *newpadlist, *newpad;	337	AV *newpadlist, *newpad;
287		338
288	newpadlist = newAV ();	339	newpadlist = newAV ();
289	AvREAL_off (newpadlist);	340	AvREAL_off (newpadlist);
290	#if PERL_VERSION_ATLEAST (5,9,0)	341	#if PERL_VERSION_ATLEAST (5,10,0)
291	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	342	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
292	#else	343	#else
293	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	344	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
294	#endif	345	#endif
295	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	346	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
296	--AvFILLp (padlist);	347	--AvFILLp (padlist);
297		348
298	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	349	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
299	av_store (newpadlist, 1, (SV *)newpad);	350	av_store (newpadlist, 1, (SV *)newpad);
300		351
301	return newpadlist;	352	return newpadlist;
302	}	353	}
303		354
…		…
333		384
334	/* casting is fun. */	385	/* casting is fun. */
335	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	386	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
336	free_padlist (aTHX_ padlist);	387	free_padlist (aTHX_ padlist);
337		388
338	SvREFCNT_dec (av);	389	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
339		390
340	return 0;	391	return 0;
341	}	392	}
342		393
343	#define PERL_MAGIC_coro PERL_MAGIC_ext	394	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		395	#define CORO_MAGIC_type_state PERL_MAGIC_ext
344		396
345	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	397	static MGVTBL coro_cv_vtbl = {
		398	0, 0, 0, 0,
		399	coro_cv_free
		400	};
346		401
347	#define CORO_MAGIC(cv) \	402	#define CORO_MAGIC(sv, type) \
348	SvMAGIC (cv) \	403	SvMAGIC (sv) \
349	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	404	? SvMAGIC (sv)->mg_type == type \
350	? SvMAGIC (cv) \	405	? SvMAGIC (sv) \
351	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	406	: mg_find (sv, type) \
352	: 0	407	: 0
		408
		409	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		410	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
353		411
354	static struct coro *	412	static struct coro *
355	SvSTATE_ (pTHX_ SV *coro)	413	SvSTATE_ (pTHX_ SV *coro)
356	{	414	{
357	HV *stash;	415	HV *stash;
…		…
369	/* very slow, but rare, check */	427	/* very slow, but rare, check */
370	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	428	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
371	croak ("Coro::State object required");	429	croak ("Coro::State object required");
372	}	430	}
373		431
374	mg = CORO_MAGIC (coro);	432	mg = CORO_MAGIC_state (coro);
375	return (struct coro *)mg->mg_ptr;	433	return (struct coro *)mg->mg_ptr;
376	}	434	}
377		435
378	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	436	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
379		437
380	/* the next two functions merely cache the padlists */	438	/* the next two functions merely cache the padlists */
381	static void	439	static void
382	get_padlist (pTHX_ CV *cv)	440	get_padlist (pTHX_ CV *cv)
383	{	441	{
384	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
385	AV *av;	443	AV *av;
386		444
387	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	445	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
388	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	446	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
389	else	447	else
390	{	448	{
391	#if CORO_PREFER_PERL_FUNCTIONS	449	#if CORO_PREFER_PERL_FUNCTIONS
392	/* this is probably cleaner, but also slower? */	450	/* this is probably cleaner? but also slower! */
		451	/* in practise, it seems to be less stable */
393	CV *cp = Perl_cv_clone (cv);	452	CV *cp = Perl_cv_clone (cv);
394	CvPADLIST (cv) = CvPADLIST (cp);	453	CvPADLIST (cv) = CvPADLIST (cp);
395	CvPADLIST (cp) = 0;	454	CvPADLIST (cp) = 0;
396	SvREFCNT_dec (cp);	455	SvREFCNT_dec (cp);
397	#else	456	#else
…		…
401	}	460	}
402		461
403	static void	462	static void
404	put_padlist (pTHX_ CV *cv)	463	put_padlist (pTHX_ CV *cv)
405	{	464	{
406	MAGIC *mg = CORO_MAGIC (cv);	465	MAGIC *mg = CORO_MAGIC_cv (cv);
407	AV *av;	466	AV *av;
408		467
409	if (expect_false (!mg))	468	if (expect_false (!mg))
410	{	469	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
411	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
412	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
413	mg->mg_virtual = &vtbl_coro;
414	mg->mg_obj = (SV *)newAV ();
415	}
416		470
417	av = (AV *)mg->mg_obj;	471	av = (AV *)mg->mg_obj;
418		472
419	if (expect_false (AvFILLp (av) >= AvMAX (av)))	473	if (expect_false (AvFILLp (av) >= AvMAX (av)))
420	av_extend (av, AvMAX (av) + 1);	474	av_extend (av, AvMAX (av) + 1);
…		…
486		540
487	if (expect_true (CvDEPTH (cv)))	541	if (expect_true (CvDEPTH (cv)))
488	{	542	{
489	EXTEND (SP, 3);	543	EXTEND (SP, 3);
490	PUSHs ((SV *)CvPADLIST (cv));	544	PUSHs ((SV *)CvPADLIST (cv));
491	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	545	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
492	PUSHs ((SV *)cv);	546	PUSHs ((SV *)cv);
493		547
494	CvDEPTH (cv) = 0;	548	CvDEPTH (cv) = 0;
495	get_padlist (aTHX_ cv);	549	get_padlist (aTHX_ cv);
496	}	550	}
…		…
507		561
508	PUTBACK;	562	PUTBACK;
509	}	563	}
510		564
511	/* allocate some space on the context stack for our purposes */	565	/* allocate some space on the context stack for our purposes */
		566	/* we manually unroll here, as usually 2 slots is enough */
		567	if (SLOT_COUNT >= 1) CXINC;
		568	if (SLOT_COUNT >= 2) CXINC;
		569	if (SLOT_COUNT >= 3) CXINC;
512	{	570	{
513	/* we manually unroll here, as usually 2 slots is enough */
514	int i;	571	int i;
515	if (SLOT_COUNT >= 1) CXINC;
516	if (SLOT_COUNT >= 2) CXINC;
517	if (SLOT_COUNT >= 3) CXINC;
518	for (i = 3; i < SLOT_COUNT; ++i)	572	for (i = 3; i < SLOT_COUNT; ++i)
519	CXINC;	573	CXINC;
520
521	cxstack_ix -= SLOT_COUNT; /* undo allocation */
522	}	574	}
		575	cxstack_ix -= SLOT_COUNT; /* undo allocation */
523		576
524	c->mainstack = PL_mainstack;	577	c->mainstack = PL_mainstack;
525		578
526	{	579	{
527	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	580	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
…		…
577		630
578	New(54,PL_savestack,24,ANY);	631	New(54,PL_savestack,24,ANY);
579	PL_savestack_ix = 0;	632	PL_savestack_ix = 0;
580	PL_savestack_max = 24;	633	PL_savestack_max = 24;
581		634
582	#if !PERL_VERSION_ATLEAST (5,9,0)	635	#if !PERL_VERSION_ATLEAST (5,10,0)
583	New(54,PL_retstack,4,OP*);	636	New(54,PL_retstack,4,OP*);
584	PL_retstack_ix = 0;	637	PL_retstack_ix = 0;
585	PL_retstack_max = 4;	638	PL_retstack_max = 4;
586	#endif	639	#endif
587	}	640	}
…		…
589		642
590	/*	643	/*
591	* destroy the stacks, the callchain etc...	644	* destroy the stacks, the callchain etc...
592	*/	645	*/
593	static void	646	static void
594	coro_destroy_stacks (pTHX)	647	coro_destruct_stacks (pTHX)
595	{	648	{
596	while (PL_curstackinfo->si_next)	649	while (PL_curstackinfo->si_next)
597	PL_curstackinfo = PL_curstackinfo->si_next;	650	PL_curstackinfo = PL_curstackinfo->si_next;
598		651
599	while (PL_curstackinfo)	652	while (PL_curstackinfo)
…		…
610		663
611	Safefree (PL_tmps_stack);	664	Safefree (PL_tmps_stack);
612	Safefree (PL_markstack);	665	Safefree (PL_markstack);
613	Safefree (PL_scopestack);	666	Safefree (PL_scopestack);
614	Safefree (PL_savestack);	667	Safefree (PL_savestack);
615	#if !PERL_VERSION_ATLEAST (5,9,0)	668	#if !PERL_VERSION_ATLEAST (5,10,0)
616	Safefree (PL_retstack);	669	Safefree (PL_retstack);
617	#endif	670	#endif
618	}	671	}
619		672
620	static size_t	673	static size_t
…		…
636	#undef VAR	689	#undef VAR
637	}	690	}
638	else	691	else
639	slot = coro->slot;	692	slot = coro->slot;
640		693
		694	if (slot)
		695	{
641	rss += sizeof (slot->curstackinfo);	696	rss += sizeof (slot->curstackinfo);
642	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	697	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
643	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	698	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
644	rss += slot->tmps_max * sizeof (SV *);	699	rss += slot->tmps_max * sizeof (SV *);
645	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	700	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
646	rss += slot->scopestack_max * sizeof (I32);	701	rss += slot->scopestack_max * sizeof (I32);
647	rss += slot->savestack_max * sizeof (ANY);	702	rss += slot->savestack_max * sizeof (ANY);
648		703
649	#if !PERL_VERSION_ATLEAST (5,9,0)	704	#if !PERL_VERSION_ATLEAST (5,10,0)
650	rss += slot->retstack_max * sizeof (OP *);	705	rss += slot->retstack_max * sizeof (OP *);
651	#endif	706	#endif
		707	}
652	}	708	}
653		709
654	return rss;	710	return rss;
655	}	711	}
656		712
657	/** coroutine stack handling ************************************************/	713	/** coroutine stack handling ************************************************/
		714
		715	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		716	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		717	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		718
		719	/* apparently < 5.8.8 */
		720	#ifndef MgPV_nolen_const
		721	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		722	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		723	(const char*)(mg)->mg_ptr)
		724	#endif
		725
		726	/*
		727	* This overrides the default magic get method of %SIG elements.
		728	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		729	* and instead of tryign to save and restore the hash elements, we just provide
		730	* readback here.
		731	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		732	* not expecting this to actually change the hook. This is a potential problem
		733	* when a schedule happens then, but we ignore this.
		734	*/
		735	static int
		736	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		737	{
		738	const char *s = MgPV_nolen_const (mg);
		739
		740	if (*s == '_')
		741	{
		742	SV **svp = 0;
		743
		744	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		745	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		746
		747	if (svp)
		748	{
		749	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		750	return 0;
		751	}
		752	}
		753
		754	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		755	}
		756
		757	static int
		758	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		759	{
		760	const char *s = MgPV_nolen_const (mg);
		761
		762	if (*s == '_')
		763	{
		764	SV **svp = 0;
		765
		766	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		767	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		768
		769	if (svp)
		770	{
		771	SV *old = *svp;
		772	*svp = 0;
		773	SvREFCNT_dec (old);
		774	return 0;
		775	}
		776	}
		777
		778	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		779	}
		780
		781	static int
		782	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		783	{
		784	const char *s = MgPV_nolen_const (mg);
		785
		786	if (*s == '_')
		787	{
		788	SV **svp = 0;
		789
		790	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		791	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		792
		793	if (svp)
		794	{
		795	SV *old = *svp;
		796	*svp = newSVsv (sv);
		797	SvREFCNT_dec (old);
		798	return 0;
		799	}
		800	}
		801
		802	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		803	}
658		804
659	static void	805	static void
660	coro_setup (pTHX_ struct coro *coro)	806	coro_setup (pTHX_ struct coro *coro)
661	{	807	{
662	/*	808	/*
…		…
671	PL_curpm = 0;	817	PL_curpm = 0;
672	PL_curpad = 0;	818	PL_curpad = 0;
673	PL_localizing = 0;	819	PL_localizing = 0;
674	PL_dirty = 0;	820	PL_dirty = 0;
675	PL_restartop = 0;	821	PL_restartop = 0;
676	PL_diehook = SvREFCNT_inc (sv_diehook);	822	#if PERL_VERSION_ATLEAST (5,10,0)
677	PL_warnhook = SvREFCNT_inc (sv_warnhook);	823	PL_parser = 0;
		824	#endif
		825
		826	/* recreate the die/warn hooks */
		827	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		828	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
678		829
679	GvSV (PL_defgv) = newSV (0);	830	GvSV (PL_defgv) = newSV (0);
680	GvAV (PL_defgv) = coro->args; coro->args = 0;	831	GvAV (PL_defgv) = coro->args; coro->args = 0;
681	GvSV (PL_errgv) = newSV (0);	832	GvSV (PL_errgv) = newSV (0);
682	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	833	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
683	PL_rs = newSVsv (GvSV (irsgv));	834	PL_rs = newSVsv (GvSV (irsgv));
684	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	835	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
685		836
686	{	837	{
687	dSP;	838	dSP;
688	LOGOP myop;	839	LOGOP myop;
689		840
…		…
697	PL_op = (OP *)&myop;	848	PL_op = (OP *)&myop;
698	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	849	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
699	SPAGAIN;	850	SPAGAIN;
700	}	851	}
701		852
702	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */	853	/* this newly created coroutine might be run on an existing cctx which most
		854	* likely was suspended in set_stacklevel, called from entersub.
		855	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		856	* so we ENTER here for symmetry
		857	*/
		858	ENTER;
703	}	859	}
704		860
705	static void	861	static void
706	coro_destroy (pTHX_ struct coro *coro)	862	coro_destruct (pTHX_ struct coro *coro)
707	{	863	{
708	if (!IN_DESTRUCT)	864	if (!IN_DESTRUCT)
709	{	865	{
710	/* restore all saved variables and stuff */	866	/* restore all saved variables and stuff */
711	LEAVE_SCOPE (0);	867	LEAVE_SCOPE (0);
…		…
733	SvREFCNT_dec (PL_warnhook);	889	SvREFCNT_dec (PL_warnhook);
734		890
735	SvREFCNT_dec (coro->saved_deffh);	891	SvREFCNT_dec (coro->saved_deffh);
736	SvREFCNT_dec (coro->throw);	892	SvREFCNT_dec (coro->throw);
737		893
738	coro_destroy_stacks (aTHX);	894	coro_destruct_stacks (aTHX);
739	}	895	}
740		896
741	static void	897	static void
742	free_coro_mortal (pTHX)	898	free_coro_mortal (pTHX)
743	{	899	{
…		…
780	: cx->blk_gimme == G_SCALAR ? bot + 1	936	: cx->blk_gimme == G_SCALAR ? bot + 1
781	: bot;	937	: bot;
782		938
783	av_extend (av, top - bot);	939	av_extend (av, top - bot);
784	while (bot < top)	940	while (bot < top)
785	av_push (av, SvREFCNT_inc (*bot++));	941	av_push (av, SvREFCNT_inc_NN (*bot++));
786		942
787	PL_runops = RUNOPS_DEFAULT;	943	PL_runops = RUNOPS_DEFAULT;
788	ENTER;	944	ENTER;
789	SAVETMPS;	945	SAVETMPS;
790	EXTEND (SP, 3);	946	EXTEND (SP, 3);
…		…
828	SAVETMPS;	984	SAVETMPS;
829	EXTEND (SP, 3);	985	EXTEND (SP, 3);
830	PUSHMARK (SP);	986	PUSHMARK (SP);
831	PUSHs (&PL_sv_yes);	987	PUSHs (&PL_sv_yes);
832	PUSHs (fullname);	988	PUSHs (fullname);
833	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	989	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
834	PUTBACK;	990	PUTBACK;
835	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	991	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
836	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	992	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
837	SPAGAIN;	993	SPAGAIN;
838	FREETMPS;	994	FREETMPS;
…		…
874		1030
875	/* inject a fake call to Coro::State::_cctx_init into the execution */	1031	/* inject a fake call to Coro::State::_cctx_init into the execution */
876	/* _cctx_init should be careful, as it could be called at almost any time */	1032	/* _cctx_init should be careful, as it could be called at almost any time */
877	/* during execution of a perl program */	1033	/* during execution of a perl program */
878	static void NOINLINE	1034	static void NOINLINE
879	prepare_cctx (pTHX_ coro_cctx *cctx)	1035	cctx_prepare (pTHX_ coro_cctx *cctx)
880	{	1036	{
881	dSP;	1037	dSP;
882	LOGOP myop;	1038	LOGOP myop;
883		1039
884	PL_top_env = &PL_start_env;	1040	PL_top_env = &PL_start_env;
…		…
902		1058
903	/*	1059	/*
904	* this is a _very_ stripped down perl interpreter ;)	1060	* this is a _very_ stripped down perl interpreter ;)
905	*/	1061	*/
906	static void	1062	static void
907	coro_run (void *arg)	1063	cctx_run (void *arg)
908	{	1064	{
		1065	#ifdef USE_ITHREADS
		1066	# if CORO_PTHREAD
		1067	PERL_SET_CONTEXT (coro_thx);
		1068	# endif
		1069	#endif
		1070	{
909	dTHX;	1071	dTHX;
910		1072
911	/* coro_run is the alternative tail of transfer(), so unlock here. */	1073	/* cctx_run is the alternative tail of transfer(), so unlock here. */
912	UNLOCK;	1074	UNLOCK;
913		1075
914	/* we now skip the entersub that lead to transfer() */	1076	/* we now skip the entersub that lead to transfer() */
915	PL_op = PL_op->op_next;	1077	PL_op = PL_op->op_next;
916		1078
917	/* inject a fake subroutine call to cctx_init */	1079	/* inject a fake subroutine call to cctx_init */
918	prepare_cctx (aTHX_ (coro_cctx *)arg);	1080	cctx_prepare (aTHX_ (coro_cctx *)arg);
919		1081
920	/* somebody or something will hit me for both perl_run and PL_restartop */	1082	/* somebody or something will hit me for both perl_run and PL_restartop */
921	PL_restartop = PL_op;	1083	PL_restartop = PL_op;
922	perl_run (PL_curinterp);	1084	perl_run (PL_curinterp);
923		1085
924	/*	1086	/*
925	* If perl-run returns we assume exit() was being called or the coro	1087	* If perl-run returns we assume exit() was being called or the coro
926	* fell off the end, which seems to be the only valid (non-bug)	1088	* fell off the end, which seems to be the only valid (non-bug)
927	* reason for perl_run to return. We try to exit by jumping to the	1089	* reason for perl_run to return. We try to exit by jumping to the
928	* bootstrap-time "top" top_env, as we cannot restore the "main"	1090	* bootstrap-time "top" top_env, as we cannot restore the "main"
929	* coroutine as Coro has no such concept	1091	* coroutine as Coro has no such concept
930	*/	1092	*/
931	PL_top_env = main_top_env;	1093	PL_top_env = main_top_env;
932	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1094	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1095	}
933	}	1096	}
934		1097
935	static coro_cctx *	1098	static coro_cctx *
936	cctx_new ()	1099	cctx_new ()
937	{	1100	{
938	coro_cctx *cctx;	1101	coro_cctx *cctx;
		1102
		1103	++cctx_count;
		1104	New (0, cctx, 1, coro_cctx);
		1105
		1106	cctx->gen = cctx_gen;
		1107	cctx->flags = 0;
		1108
		1109	return cctx;
		1110	}
		1111
		1112	/* create a new cctx only suitable as source */
		1113	static coro_cctx *
		1114	cctx_new_empty ()
		1115	{
		1116	coro_cctx *cctx = cctx_new ();
		1117
		1118	cctx->sptr = 0;
		1119	cctx->idle_sp = 0; /* should never be a valid address */
		1120	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1121
		1122	return cctx;
		1123	}
		1124
		1125	/* create a new cctx suitable as destination/running a perl interpreter */
		1126	static coro_cctx *
		1127	cctx_new_run ()
		1128	{
		1129	coro_cctx *cctx = cctx_new ();
939	void *stack_start;	1130	void *stack_start;
940	size_t stack_size;	1131	size_t stack_size;
941		1132
942	++cctx_count;
943
944	Newz (0, cctx, 1, coro_cctx);
945
946	#if HAVE_MMAP	1133	#if HAVE_MMAP
947
948	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1134	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
949	/* mmap supposedly does allocate-on-write for us */	1135	/* mmap supposedly does allocate-on-write for us */
950	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1136	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
951		1137
952	if (cctx->sptr != (void *)-1)	1138	if (cctx->sptr != (void *)-1)
953	{	1139	{
…		…
959	cctx->flags |= CC_MAPPED;	1145	cctx->flags |= CC_MAPPED;
960	}	1146	}
961	else	1147	else
962	#endif	1148	#endif
963	{	1149	{
964	cctx->ssize = coro_stacksize * (long)sizeof (long);	1150	cctx->ssize = cctx_stacksize * (long)sizeof (long);
965	New (0, cctx->sptr, coro_stacksize, long);	1151	New (0, cctx->sptr, cctx_stacksize, long);
966		1152
967	if (!cctx->sptr)	1153	if (!cctx->sptr)
968	{	1154	{
969	perror ("FATAL: unable to allocate stack for coroutine");	1155	perror ("FATAL: unable to allocate stack for coroutine");
970	_exit (EXIT_FAILURE);	1156	_exit (EXIT_FAILURE);
…		…
973	stack_start = cctx->sptr;	1159	stack_start = cctx->sptr;
974	stack_size = cctx->ssize;	1160	stack_size = cctx->ssize;
975	}	1161	}
976		1162
977	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1163	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
978	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1164	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
979		1165
980	return cctx;	1166	return cctx;
981	}	1167	}
982		1168
983	static void	1169	static void
…		…
985	{	1171	{
986	if (!cctx)	1172	if (!cctx)
987	return;	1173	return;
988		1174
989	--cctx_count;	1175	--cctx_count;
		1176	coro_destroy (&cctx->cctx);
990		1177
		1178	/* coro_transfer creates new, empty cctx's */
		1179	if (cctx->sptr)
		1180	{
991	#if CORO_USE_VALGRIND	1181	#if CORO_USE_VALGRIND
992	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1182	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
993	#endif	1183	#endif
994		1184
995	#if HAVE_MMAP	1185	#if HAVE_MMAP
996	if (cctx->flags & CC_MAPPED)	1186	if (cctx->flags & CC_MAPPED)
997	munmap (cctx->sptr, cctx->ssize);	1187	munmap (cctx->sptr, cctx->ssize);
998	else	1188	else
999	#endif	1189	#endif
1000	Safefree (cctx->sptr);	1190	Safefree (cctx->sptr);
		1191	}
1001		1192
1002	Safefree (cctx);	1193	Safefree (cctx);
1003	}	1194	}
1004		1195
1005	/* wether this cctx should be destructed */	1196	/* wether this cctx should be destructed */
1006	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1197	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1007		1198
1008	static coro_cctx *	1199	static coro_cctx *
1009	cctx_get (pTHX)	1200	cctx_get (pTHX)
1010	{	1201	{
1011	while (expect_true (cctx_first))	1202	while (expect_true (cctx_first))
…		…
1018	return cctx;	1209	return cctx;
1019		1210
1020	cctx_destroy (cctx);	1211	cctx_destroy (cctx);
1021	}	1212	}
1022		1213
1023	return cctx_new ();	1214	return cctx_new_run ();
1024	}	1215	}
1025		1216
1026	static void	1217	static void
1027	cctx_put (coro_cctx *cctx)	1218	cctx_put (coro_cctx *cctx)
1028	{	1219	{
		1220	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1221
1029	/* free another cctx if overlimit */	1222	/* free another cctx if overlimit */
1030	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1223	if (expect_false (cctx_idle >= cctx_max_idle))
1031	{	1224	{
1032	coro_cctx *first = cctx_first;	1225	coro_cctx *first = cctx_first;
1033	cctx_first = first->next;	1226	cctx_first = first->next;
1034	--cctx_idle;	1227	--cctx_idle;
1035		1228
…		…
1055	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1248	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1056		1249
1057	if (expect_false (next->flags & CF_DESTROYED))	1250	if (expect_false (next->flags & CF_DESTROYED))
1058	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1251	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1059		1252
1060	if (
1061	#if PERL_VERSION_ATLEAST (5,9,0)	1253	#if !PERL_VERSION_ATLEAST (5,10,0)
1062	expect_false (PL_parser)
1063	#else
1064	expect_false (PL_lex_state != LEX_NOTPARSING)	1254	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1065	#endif
1066	)
1067	croak ("Coro::State::transfer called while parsing, but this is not supported");	1255	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1256	#endif
1068	}	1257	}
1069	}	1258	}
1070		1259
1071	/* always use the TRANSFER macro */	1260	/* always use the TRANSFER macro */
1072	static void NOINLINE	1261	static void NOINLINE
1073	transfer (pTHX_ struct coro *prev, struct coro *next)	1262	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1074	{	1263	{
1075	dSTACKLEVEL;	1264	dSTACKLEVEL;
1076		1265
1077	/* sometimes transfer is only called to set idle_sp */	1266	/* sometimes transfer is only called to set idle_sp */
1078	if (expect_false (!next))	1267	if (expect_false (!next))
…		…
1080	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1269	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1081	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1270	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1082	}	1271	}
1083	else if (expect_true (prev != next))	1272	else if (expect_true (prev != next))
1084	{	1273	{
		1274	static volatile int has_throw;
1085	coro_cctx *prev__cctx;	1275	coro_cctx *prev__cctx;
1086		1276
1087	if (expect_false (prev->flags & CF_NEW))	1277	if (expect_false (prev->flags & CF_NEW))
1088	{	1278	{
1089	/* create a new empty context */	1279	/* create a new empty/source context */
1090	Newz (0, prev->cctx, 1, coro_cctx);	1280	prev->cctx = cctx_new_empty ();
1091	prev->flags &= ~CF_NEW;	1281	prev->flags &= ~CF_NEW;
1092	prev->flags |= CF_RUNNING;	1282	prev->flags |= CF_RUNNING;
1093	}	1283	}
1094		1284
1095	prev->flags &= ~CF_RUNNING;	1285	prev->flags &= ~CF_RUNNING;
1096	next->flags |= CF_RUNNING;	1286	next->flags |= CF_RUNNING;
1097		1287
1098	LOCK;	1288	LOCK;
		1289
		1290	/* first get rid of the old state */
		1291	save_perl (aTHX_ prev);
1099		1292
1100	if (expect_false (next->flags & CF_NEW))	1293	if (expect_false (next->flags & CF_NEW))
1101	{	1294	{
1102	/* need to start coroutine */	1295	/* need to start coroutine */
1103	next->flags &= ~CF_NEW;	1296	next->flags &= ~CF_NEW;
1104	/* first get rid of the old state */
1105	save_perl (aTHX_ prev);
1106	/* setup coroutine call */	1297	/* setup coroutine call */
1107	coro_setup (aTHX_ next);	1298	coro_setup (aTHX_ next);
1108	}	1299	}
1109	else	1300	else
1110	{
1111	/* coroutine already started */
1112	save_perl (aTHX_ prev);
1113	load_perl (aTHX_ next);	1301	load_perl (aTHX_ next);
1114	}
1115		1302
1116	prev__cctx = prev->cctx;	1303	prev__cctx = prev->cctx;
1117		1304
1118	/* possibly "free" the cctx */	1305	/* possibly "free" the cctx */
1119	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1306	if (expect_true (
		1307	prev__cctx->idle_sp == STACKLEVEL
		1308	&& !(prev__cctx->flags & CC_TRACE)
		1309	&& !force_cctx
		1310	))
1120	{	1311	{
1121	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1312	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1122	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1313	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1123		1314
1124	prev->cctx = 0;	1315	prev->cctx = 0;
1125		1316
1126	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1317	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1127	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1318	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1128	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1319	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1320	if (!next->cctx)
1129	next->cctx = cctx_get (aTHX);	1321	next->cctx = cctx_get (aTHX);
1130		1322
1131	cctx_put (prev__cctx);	1323	cctx_put (prev__cctx);
1132	}	1324	}
1133		1325
1134	++next->usecount;	1326	++next->usecount;
1135		1327
1136	if (expect_true (!next->cctx))	1328	if (expect_true (!next->cctx))
1137	next->cctx = cctx_get (aTHX);	1329	next->cctx = cctx_get (aTHX);
		1330
		1331	has_throw = !!next->throw;
1138		1332
1139	if (expect_false (prev__cctx != next->cctx))	1333	if (expect_false (prev__cctx != next->cctx))
1140	{	1334	{
1141	prev__cctx->top_env = PL_top_env;	1335	prev__cctx->top_env = PL_top_env;
1142	PL_top_env = next->cctx->top_env;	1336	PL_top_env = next->cctx->top_env;
…		…
1144	}	1338	}
1145		1339
1146	free_coro_mortal (aTHX);	1340	free_coro_mortal (aTHX);
1147	UNLOCK;	1341	UNLOCK;
1148		1342
1149	if (expect_false (prev->throw || next->throw))	1343	if (expect_false (has_throw))
1150	{	1344	{
1151	struct coro *coro = SvSTATE (coro_current);	1345	struct coro *coro = SvSTATE (coro_current);
1152		1346
1153	if (coro->throw)	1347	if (coro->throw)
1154	{	1348	{
…		…
1164	struct transfer_args	1358	struct transfer_args
1165	{	1359	{
1166	struct coro *prev, *next;	1360	struct coro *prev, *next;
1167	};	1361	};
1168		1362
1169	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1363	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1170	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1364	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1171		1365
1172	/** high level stuff ********************************************************/	1366	/** high level stuff ********************************************************/
1173		1367
1174	static int	1368	static int
…		…
1198	croak ("FATAL: tried to destroy currently running coroutine");	1392	croak ("FATAL: tried to destroy currently running coroutine");
1199		1393
1200	save_perl (aTHX_ &temp);	1394	save_perl (aTHX_ &temp);
1201	load_perl (aTHX_ coro);	1395	load_perl (aTHX_ coro);
1202		1396
1203	coro_destroy (aTHX_ coro);	1397	coro_destruct (aTHX_ coro);
1204		1398
1205	load_perl (aTHX_ &temp);	1399	load_perl (aTHX_ &temp);
1206		1400
1207	coro->slot = 0;	1401	coro->slot = 0;
1208	}	1402	}
…		…
1268	{	1462	{
1269	dTHX;	1463	dTHX;
1270	struct transfer_args ta;	1464	struct transfer_args ta;
1271		1465
1272	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1466	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1273	TRANSFER (ta);	1467	TRANSFER (ta, 1);
1274	}	1468	}
1275		1469
1276	/** Coro ********************************************************************/	1470	/** Coro ********************************************************************/
1277		1471
1278	static void	1472	static void
…		…
1280	{	1474	{
1281	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1475	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1282	}	1476	}
1283		1477
1284	static SV *	1478	static SV *
1285	coro_deq (pTHX_ int min_prio)	1479	coro_deq (pTHX)
1286	{	1480	{
1287	int prio = PRIO_MAX - PRIO_MIN;	1481	int prio;
1288		1482
1289	min_prio -= PRIO_MIN;
1290	if (min_prio < 0)
1291	min_prio = 0;
1292
1293	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1483	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1294	if (AvFILLp (coro_ready [prio]) >= 0)	1484	if (AvFILLp (coro_ready [prio]) >= 0)
1295	return av_shift (coro_ready [prio]);	1485	return av_shift (coro_ready [prio]);
1296		1486
1297	return 0;	1487	return 0;
1298	}	1488	}
…		…
1300	static int	1490	static int
1301	api_ready (SV *coro_sv)	1491	api_ready (SV *coro_sv)
1302	{	1492	{
1303	dTHX;	1493	dTHX;
1304	struct coro *coro;	1494	struct coro *coro;
		1495	SV *sv_hook;
		1496	void (*xs_hook)(void);
1305		1497
1306	if (SvROK (coro_sv))	1498	if (SvROK (coro_sv))
1307	coro_sv = SvRV (coro_sv);	1499	coro_sv = SvRV (coro_sv);
1308		1500
1309	coro = SvSTATE (coro_sv);	1501	coro = SvSTATE (coro_sv);
…		…
1312	return 0;	1504	return 0;
1313		1505
1314	coro->flags |= CF_READY;	1506	coro->flags |= CF_READY;
1315		1507
1316	LOCK;	1508	LOCK;
		1509
		1510	sv_hook = coro_nready ? 0 : coro_readyhook;
		1511	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1512
1317	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1513	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1318	++coro_nready;	1514	++coro_nready;
		1515
1319	UNLOCK;	1516	UNLOCK;
		1517
		1518	if (sv_hook)
		1519	{
		1520	dSP;
		1521
		1522	ENTER;
		1523	SAVETMPS;
		1524
		1525	PUSHMARK (SP);
		1526	PUTBACK;
		1527	call_sv (sv_hook, G_DISCARD);
		1528	SPAGAIN;
		1529
		1530	FREETMPS;
		1531	LEAVE;
		1532	}
		1533
		1534	if (xs_hook)
		1535	xs_hook ();
1320		1536
1321	return 1;	1537	return 1;
1322	}	1538	}
1323		1539
1324	static int	1540	static int
…		…
1334	SV *prev_sv, *next_sv;	1550	SV *prev_sv, *next_sv;
1335		1551
1336	for (;;)	1552	for (;;)
1337	{	1553	{
1338	LOCK;	1554	LOCK;
1339	next_sv = coro_deq (aTHX_ PRIO_MIN);	1555	next_sv = coro_deq (aTHX);
1340		1556
1341	/* nothing to schedule: call the idle handler */	1557	/* nothing to schedule: call the idle handler */
1342	if (expect_false (!next_sv))	1558	if (expect_false (!next_sv))
1343	{	1559	{
1344	dSP;	1560	dSP;
…		…
1348	SAVETMPS;	1564	SAVETMPS;
1349		1565
1350	PUSHMARK (SP);	1566	PUSHMARK (SP);
1351	PUTBACK;	1567	PUTBACK;
1352	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1568	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1569	SPAGAIN;
1353		1570
1354	FREETMPS;	1571	FREETMPS;
1355	LEAVE;	1572	LEAVE;
1356	continue;	1573	continue;
1357	}	1574	}
…		…
1412	{	1629	{
1413	dTHX;	1630	dTHX;
1414	struct transfer_args ta;	1631	struct transfer_args ta;
1415		1632
1416	prepare_schedule (aTHX_ &ta);	1633	prepare_schedule (aTHX_ &ta);
1417	TRANSFER (ta);	1634	TRANSFER (ta, 1);
1418	}	1635	}
1419		1636
1420	static int	1637	static int
1421	api_cede (void)	1638	api_cede (void)
1422	{	1639	{
…		…
1425		1642
1426	prepare_cede (aTHX_ &ta);	1643	prepare_cede (aTHX_ &ta);
1427		1644
1428	if (expect_true (ta.prev != ta.next))	1645	if (expect_true (ta.prev != ta.next))
1429	{	1646	{
1430	TRANSFER (ta);	1647	TRANSFER (ta, 1);
1431	return 1;	1648	return 1;
1432	}	1649	}
1433	else	1650	else
1434	return 0;	1651	return 0;
1435	}	1652	}
…		…
1440	dTHX;	1657	dTHX;
1441	struct transfer_args ta;	1658	struct transfer_args ta;
1442		1659
1443	if (prepare_cede_notself (aTHX_ &ta))	1660	if (prepare_cede_notself (aTHX_ &ta))
1444	{	1661	{
1445	TRANSFER (ta);	1662	TRANSFER (ta, 1);
1446	return 1;	1663	return 1;
1447	}	1664	}
1448	else	1665	else
1449	return 0;	1666	return 0;
1450	}	1667	}
…		…
1456	struct coro *coro = SvSTATE (coro_sv);	1673	struct coro *coro = SvSTATE (coro_sv);
1457		1674
1458	if (flags & CC_TRACE)	1675	if (flags & CC_TRACE)
1459	{	1676	{
1460	if (!coro->cctx)	1677	if (!coro->cctx)
1461	coro->cctx = cctx_new ();	1678	coro->cctx = cctx_new_run ();
1462	else if (!(coro->cctx->flags & CC_TRACE))	1679	else if (!(coro->cctx->flags & CC_TRACE))
1463	croak ("cannot enable tracing on coroutine with custom stack");	1680	croak ("cannot enable tracing on coroutine with custom stack");
1464		1681
1465	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1682	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1466	}	1683	}
…		…
1473	else	1690	else
1474	coro->slot->runops = RUNOPS_DEFAULT;	1691	coro->slot->runops = RUNOPS_DEFAULT;
1475	}	1692	}
1476	}	1693	}
1477		1694
		1695	#if 0
		1696	static int
		1697	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1698	{
		1699	AV *padlist;
		1700	AV *av = (AV *)mg->mg_obj;
		1701
		1702	abort ();
		1703
		1704	return 0;
		1705	}
		1706
		1707	static MGVTBL coro_gensub_vtbl = {
		1708	0, 0, 0, 0,
		1709	coro_gensub_free
		1710	};
		1711	#endif
		1712
		1713	/*****************************************************************************/
		1714	/* PerlIO::cede */
		1715
		1716	typedef struct
		1717	{
		1718	PerlIOBuf base;
		1719	NV next, every;
		1720	} PerlIOCede;
		1721
		1722	static IV
		1723	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1724	{
		1725	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1726
		1727	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1728	self->next = nvtime () + self->every;
		1729
		1730	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1731	}
		1732
		1733	static SV *
		1734	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1735	{
		1736	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1737
		1738	return newSVnv (self->every);
		1739	}
		1740
		1741	static IV
		1742	PerlIOCede_flush (pTHX_ PerlIO *f)
		1743	{
		1744	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1745	double now = nvtime ();
		1746
		1747	if (now >= self->next)
		1748	{
		1749	api_cede ();
		1750	self->next = now + self->every;
		1751	}
		1752
		1753	return PerlIOBuf_flush (aTHX_ f);
		1754	}
		1755
		1756	static PerlIO_funcs PerlIO_cede =
		1757	{
		1758	sizeof(PerlIO_funcs),
		1759	"cede",
		1760	sizeof(PerlIOCede),
		1761	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1762	PerlIOCede_pushed,
		1763	PerlIOBuf_popped,
		1764	PerlIOBuf_open,
		1765	PerlIOBase_binmode,
		1766	PerlIOCede_getarg,
		1767	PerlIOBase_fileno,
		1768	PerlIOBuf_dup,
		1769	PerlIOBuf_read,
		1770	PerlIOBuf_unread,
		1771	PerlIOBuf_write,
		1772	PerlIOBuf_seek,
		1773	PerlIOBuf_tell,
		1774	PerlIOBuf_close,
		1775	PerlIOCede_flush,
		1776	PerlIOBuf_fill,
		1777	PerlIOBase_eof,
		1778	PerlIOBase_error,
		1779	PerlIOBase_clearerr,
		1780	PerlIOBase_setlinebuf,
		1781	PerlIOBuf_get_base,
		1782	PerlIOBuf_bufsiz,
		1783	PerlIOBuf_get_ptr,
		1784	PerlIOBuf_get_cnt,
		1785	PerlIOBuf_set_ptrcnt,
		1786	};
		1787
		1788
1478	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1789	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1479		1790
1480	PROTOTYPES: DISABLE	1791	PROTOTYPES: DISABLE
1481		1792
1482	BOOT:	1793	BOOT:
1483	{	1794	{
1484	#ifdef USE_ITHREADS	1795	#ifdef USE_ITHREADS
1485	MUTEX_INIT (&coro_mutex);	1796	MUTEX_INIT (&coro_lock);
		1797	# if CORO_PTHREAD
		1798	coro_thx = PERL_GET_CONTEXT;
		1799	# endif
1486	#endif	1800	#endif
1487	BOOT_PAGESIZE;	1801	BOOT_PAGESIZE;
1488		1802
1489	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1803	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1490	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1804	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1491		1805
1492	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1806	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1493	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);	1807	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1808	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1494		1809
1495	if (!PL_diehook) PL_diehook = SvREFCNT_inc (sv_diehook);	1810	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1496	if (!PL_warnhook) PL_warnhook = SvREFCNT_inc (sv_warnhook);	1811	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1812	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1497		1813
1498	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1814	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1499		1815
1500	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1816	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1501	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1817	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1506	main_top_env = PL_top_env;	1822	main_top_env = PL_top_env;
1507		1823
1508	while (main_top_env->je_prev)	1824	while (main_top_env->je_prev)
1509	main_top_env = main_top_env->je_prev;	1825	main_top_env = main_top_env->je_prev;
1510		1826
1511	coroapi.ver = CORO_API_VERSION;	1827	coroapi.ver = CORO_API_VERSION;
		1828	coroapi.rev = CORO_API_REVISION;
1512	coroapi.transfer = api_transfer;	1829	coroapi.transfer = api_transfer;
		1830
		1831	{
		1832	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1833
		1834	if (!svp) croak ("Time::HiRes is required");
		1835	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1836
		1837	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1838	}
1513		1839
1514	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1840	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1515	}	1841	}
1516		1842
1517	SV *	1843	SV *
1518	new (char *klass, ...)	1844	new (char *klass, ...)
1519	CODE:	1845	CODE:
1520	{	1846	{
1521	struct coro *coro;	1847	struct coro *coro;
		1848	MAGIC *mg;
1522	HV *hv;	1849	HV *hv;
1523	int i;	1850	int i;
1524		1851
1525	Newz (0, coro, 1, struct coro);	1852	Newz (0, coro, 1, struct coro);
1526	coro->args = newAV ();	1853	coro->args = newAV ();
…		…
1529	if (coro_first) coro_first->prev = coro;	1856	if (coro_first) coro_first->prev = coro;
1530	coro->next = coro_first;	1857	coro->next = coro_first;
1531	coro_first = coro;	1858	coro_first = coro;
1532		1859
1533	coro->hv = hv = newHV ();	1860	coro->hv = hv = newHV ();
1534	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1861	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1862	mg->mg_flags |= MGf_DUP;
1535	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1863	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1536		1864
1537	av_extend (coro->args, items - 1);	1865	av_extend (coro->args, items - 1);
1538	for (i = 1; i < items; i++)	1866	for (i = 1; i < items; i++)
1539	av_push (coro->args, newSVsv (ST (i)));	1867	av_push (coro->args, newSVsv (ST (i)));
…		…
1553	Coro::cede_notself = 4	1881	Coro::cede_notself = 4
1554	CODE:	1882	CODE:
1555	{	1883	{
1556	struct transfer_args ta;	1884	struct transfer_args ta;
1557		1885
		1886	PUTBACK;
1558	switch (ix)	1887	switch (ix)
1559	{	1888	{
1560	case 0:	1889	case 0:
1561	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1890	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1562	ta.next = 0;	1891	ta.next = 0;
1563	break;	1892	break;
1564		1893
1565	case 1:	1894	case 1:
1566	if (items != 2)	1895	if (items != 2)
1567	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1896	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1568		1897
1569	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1898	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1570	break;	1899	break;
1571		1900
1572	case 2:	1901	case 2:
…		…
1581	if (!prepare_cede_notself (aTHX_ &ta))	1910	if (!prepare_cede_notself (aTHX_ &ta))
1582	XSRETURN_EMPTY;	1911	XSRETURN_EMPTY;
1583		1912
1584	break;	1913	break;
1585	}	1914	}
		1915	SPAGAIN;
1586		1916
1587	BARRIER;	1917	BARRIER;
		1918	PUTBACK;
1588	TRANSFER (ta);	1919	TRANSFER (ta, 0);
1589		1920	SPAGAIN; /* might be the sp of a different coroutine now */
1590	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))	1921	/* be extra careful not to ever do anything after TRANSFER */
1591	XSRETURN_YES;
1592	}	1922	}
1593		1923
1594	bool	1924	bool
1595	_destroy (SV *coro_sv)	1925	_destroy (SV *coro_sv)
1596	CODE:	1926	CODE:
1597	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1927	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1598	OUTPUT:	1928	OUTPUT:
1599	RETVAL	1929	RETVAL
1600		1930
1601	void	1931	void
1602	_exit (code)	1932	_exit (int code)
1603	int code
1604	PROTOTYPE: $	1933	PROTOTYPE: $
1605	CODE:	1934	CODE:
1606	_exit (code);	1935	_exit (code);
1607		1936
1608	int	1937	int
1609	cctx_stacksize (int new_stacksize = 0)	1938	cctx_stacksize (int new_stacksize = 0)
1610	CODE:	1939	CODE:
1611	RETVAL = coro_stacksize;	1940	RETVAL = cctx_stacksize;
1612	if (new_stacksize)	1941	if (new_stacksize)
		1942	{
1613	coro_stacksize = new_stacksize;	1943	cctx_stacksize = new_stacksize;
		1944	++cctx_gen;
		1945	}
		1946	OUTPUT:
		1947	RETVAL
		1948
		1949	int
		1950	cctx_max_idle (int max_idle = 0)
		1951	CODE:
		1952	RETVAL = cctx_max_idle;
		1953	if (max_idle > 1)
		1954	cctx_max_idle = max_idle;
1614	OUTPUT:	1955	OUTPUT:
1615	RETVAL	1956	RETVAL
1616		1957
1617	int	1958	int
1618	cctx_count ()	1959	cctx_count ()
…		…
1642	call (Coro::State coro, SV *coderef)	1983	call (Coro::State coro, SV *coderef)
1643	ALIAS:	1984	ALIAS:
1644	eval = 1	1985	eval = 1
1645	CODE:	1986	CODE:
1646	{	1987	{
1647	if (coro->mainstack)	1988	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1648	{	1989	{
1649	struct coro temp;	1990	struct coro temp;
1650		1991
1651	if (!(coro->flags & CF_RUNNING))	1992	if (!(coro->flags & CF_RUNNING))
1652	{	1993	{
		1994	PUTBACK;
1653	save_perl (aTHX_ &temp);	1995	save_perl (aTHX_ &temp);
1654	load_perl (aTHX_ coro);	1996	load_perl (aTHX_ coro);
1655	}	1997	}
1656		1998
1657	{	1999	{
1658	dSP;	2000	dSP;
1659	ENTER;	2001	ENTER;
1660	SAVETMPS;	2002	SAVETMPS;
		2003	PUTBACK;
		2004	PUSHSTACK;
1661	PUSHMARK (SP);	2005	PUSHMARK (SP);
1662	PUTBACK;
1663		2006
1664	if (ix)	2007	if (ix)
1665	eval_sv (coderef, 0);	2008	eval_sv (coderef, 0);
1666	else	2009	else
1667	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2010	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1668		2011
		2012	POPSTACK;
1669	SPAGAIN;	2013	SPAGAIN;
1670	FREETMPS;	2014	FREETMPS;
1671	LEAVE;	2015	LEAVE;
1672	PUTBACK;	2016	PUTBACK;
1673	}	2017	}
1674		2018
1675	if (!(coro->flags & CF_RUNNING))	2019	if (!(coro->flags & CF_RUNNING))
1676	{	2020	{
1677	save_perl (aTHX_ coro);	2021	save_perl (aTHX_ coro);
1678	load_perl (aTHX_ &temp);	2022	load_perl (aTHX_ &temp);
		2023	SPAGAIN;
1679	}	2024	}
1680	}	2025	}
1681	}	2026	}
1682		2027
1683	SV *	2028	SV *
…		…
1695		2040
1696	void	2041	void
1697	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2042	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1698		2043
1699	SV *	2044	SV *
1700	has_stack (Coro::State coro)	2045	has_cctx (Coro::State coro)
1701	PROTOTYPE: $	2046	PROTOTYPE: $
1702	CODE:	2047	CODE:
1703	RETVAL = boolSV (!!coro->cctx);	2048	RETVAL = boolSV (!!coro->cctx);
1704	OUTPUT:	2049	OUTPUT:
1705	RETVAL	2050	RETVAL
…		…
1710	CODE:	2055	CODE:
1711	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2056	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1712	OUTPUT:	2057	OUTPUT:
1713	RETVAL	2058	RETVAL
1714		2059
1715	IV	2060	UV
1716	rss (Coro::State coro)	2061	rss (Coro::State coro)
1717	PROTOTYPE: $	2062	PROTOTYPE: $
1718	ALIAS:	2063	ALIAS:
1719	usecount = 1	2064	usecount = 1
1720	CODE:	2065	CODE:
…		…
1724	case 1: RETVAL = coro->usecount; break;	2069	case 1: RETVAL = coro->usecount; break;
1725	}	2070	}
1726	OUTPUT:	2071	OUTPUT:
1727	RETVAL	2072	RETVAL
1728		2073
		2074	void
		2075	force_cctx ()
		2076	CODE:
		2077	struct coro *coro = SvSTATE (coro_current);
		2078	coro->cctx->idle_sp = 0;
		2079
		2080	void
		2081	swap_defsv (Coro::State self)
		2082	PROTOTYPE: $
		2083	ALIAS:
		2084	swap_defav = 1
		2085	CODE:
		2086	if (!self->slot)
		2087	croak ("cannot swap state with coroutine that has no saved state");
		2088	else
		2089	{
		2090	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2091	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2092
		2093	SV *tmp = *src; *src = *dst; *dst = tmp;
		2094	}
1729		2095
1730	MODULE = Coro::State PACKAGE = Coro	2096	MODULE = Coro::State PACKAGE = Coro
1731		2097
1732	BOOT:	2098	BOOT:
1733	{	2099	{
1734	int i;	2100	int i;
1735		2101
1736	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1737	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1738	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2102	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2103	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2104	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1739		2105
1740	coro_current = coro_get_sv ("Coro::current", FALSE);	2106	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1741	SvREADONLY_on (coro_current);	2107	SvREADONLY_on (coro_current);
1742		2108
1743	coro_stash = gv_stashpv ("Coro", TRUE);	2109	coro_stash = gv_stashpv ("Coro", TRUE);
1744		2110
1745	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1773	void	2139	void
1774	_set_current (SV *current)	2140	_set_current (SV *current)
1775	PROTOTYPE: $	2141	PROTOTYPE: $
1776	CODE:	2142	CODE:
1777	SvREFCNT_dec (SvRV (coro_current));	2143	SvREFCNT_dec (SvRV (coro_current));
1778	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2144	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2145
		2146	void
		2147	_set_readyhook (SV *hook)
		2148	PROTOTYPE: $
		2149	CODE:
		2150	LOCK;
		2151	SvREFCNT_dec (coro_readyhook);
		2152	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2153	UNLOCK;
1779		2154
1780	int	2155	int
1781	prio (Coro::State coro, int newprio = 0)	2156	prio (Coro::State coro, int newprio = 0)
1782	ALIAS:	2157	ALIAS:
1783	nice = 1	2158	nice = 1
…		…
1833	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2208	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1834	AV *invoke_av;	2209	AV *invoke_av;
1835	int i, len;	2210	int i, len;
1836		2211
1837	if (!invoke)	2212	if (!invoke)
		2213	{
		2214	SV *old = PL_diehook;
		2215	PL_diehook = 0;
		2216	SvREFCNT_dec (old);
1838	croak ("\3async_pool terminate\2\n");	2217	croak ("\3async_pool terminate\2\n");
		2218	}
1839		2219
1840	SvREFCNT_dec (coro->saved_deffh);	2220	SvREFCNT_dec (coro->saved_deffh);
1841	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2221	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1842		2222
1843	hv_store (hv, "desc", sizeof ("desc") - 1,	2223	hv_store (hv, "desc", sizeof ("desc") - 1,
1844	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2224	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1845		2225
1846	invoke_av = (AV *)SvRV (invoke);	2226	invoke_av = (AV *)SvRV (invoke);
…		…
1850		2230
1851	if (len > 0)	2231	if (len > 0)
1852	{	2232	{
1853	av_fill (defav, len - 1);	2233	av_fill (defav, len - 1);
1854	for (i = 0; i < len; ++i)	2234	for (i = 0; i < len; ++i)
1855	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2235	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1856	}	2236	}
1857		2237
1858	SvREFCNT_dec (invoke);	2238	SvREFCNT_dec (invoke);
1859	}	2239	}
1860		2240
…		…
1867	sv_setsv (cb, &PL_sv_undef);	2247	sv_setsv (cb, &PL_sv_undef);
1868		2248
1869	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2249	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1870	coro->saved_deffh = 0;	2250	coro->saved_deffh = 0;
1871		2251
1872	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2252	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1873	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2253	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2254	{
		2255	SV *old = PL_diehook;
		2256	PL_diehook = 0;
		2257	SvREFCNT_dec (old);
1874	croak ("\3async_pool terminate\2\n");	2258	croak ("\3async_pool terminate\2\n");
		2259	}
1875		2260
1876	av_clear (GvAV (PL_defgv));	2261	av_clear (GvAV (PL_defgv));
1877	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2262	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1878	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2263	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1879		2264
…		…
1883	api_trace (coro_current, 0);	2268	api_trace (coro_current, 0);
1884		2269
1885	av_push (av_async_pool, newSVsv (coro_current));	2270	av_push (av_async_pool, newSVsv (coro_current));
1886	}	2271	}
1887		2272
		2273	#if 0
		2274
		2275	void
		2276	_generator_call (...)
		2277	PROTOTYPE: @
		2278	PPCODE:
		2279	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2280	xxxx
		2281	abort ();
		2282
		2283	SV *
		2284	gensub (SV *sub, ...)
		2285	PROTOTYPE: &;@
		2286	CODE:
		2287	{
		2288	struct coro *coro;
		2289	MAGIC *mg;
		2290	CV *xcv;
		2291	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2292	int i;
		2293
		2294	CvGV (ncv) = CvGV (cv);
		2295	CvFILE (ncv) = CvFILE (cv);
		2296
		2297	Newz (0, coro, 1, struct coro);
		2298	coro->args = newAV ();
		2299	coro->flags = CF_NEW;
		2300
		2301	av_extend (coro->args, items - 1);
		2302	for (i = 1; i < items; i++)
		2303	av_push (coro->args, newSVsv (ST (i)));
		2304
		2305	CvISXSUB_on (ncv);
		2306	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2307
		2308	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2309
		2310	CvXSUB (ncv) = CvXSUB (xcv);
		2311	CvANON_on (ncv);
		2312
		2313	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2314	RETVAL = newRV_noinc ((SV *)ncv);
		2315	}
		2316	OUTPUT:
		2317	RETVAL
		2318
		2319	#endif
		2320
1888		2321
1889	MODULE = Coro::State PACKAGE = Coro::AIO	2322	MODULE = Coro::State PACKAGE = Coro::AIO
1890		2323
1891	SV *	2324	void
1892	_get_state ()	2325	_get_state (SV *self)
1893	CODE:	2326	PPCODE:
1894	{	2327	{
1895	struct io_state *data;	2328	AV *defav = GvAV (PL_defgv);
1896		2329	AV *av = newAV ();
		2330	int i;
1897	RETVAL = newSV (sizeof (struct io_state));	2331	SV *data_sv = newSV (sizeof (struct io_state));
1898	data = (struct io_state *)SvPVX (RETVAL);	2332	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1899	SvCUR_set (RETVAL, sizeof (struct io_state));	2333	SvCUR_set (data_sv, sizeof (struct io_state));
1900	SvPOK_only (RETVAL);	2334	SvPOK_only (data_sv);
1901		2335
1902	data->errorno = errno;	2336	data->errorno = errno;
1903	data->laststype = PL_laststype;	2337	data->laststype = PL_laststype;
1904	data->laststatval = PL_laststatval;	2338	data->laststatval = PL_laststatval;
1905	data->statcache = PL_statcache;	2339	data->statcache = PL_statcache;
		2340
		2341	av_extend (av, AvFILLp (defav) + 1 + 1);
		2342
		2343	for (i = 0; i <= AvFILLp (defav); ++i)
		2344	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2345
		2346	av_push (av, data_sv);
		2347
		2348	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2349
		2350	api_ready (self);
1906	}	2351	}
1907	OUTPUT:
1908	RETVAL
1909		2352
1910	void	2353	void
1911	_set_state (char *data_)	2354	_set_state (SV *state)
1912	PROTOTYPE: $	2355	PROTOTYPE: $
1913	CODE:	2356	PPCODE:
1914	{	2357	{
1915	struct io_state *data = (void *)data_;	2358	AV *av = (AV *)SvRV (state);
		2359	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2360	int i;
1916		2361
1917	errno = data->errorno;	2362	errno = data->errorno;
1918	PL_laststype = data->laststype;	2363	PL_laststype = data->laststype;
1919	PL_laststatval = data->laststatval;	2364	PL_laststatval = data->laststatval;
1920	PL_statcache = data->statcache;	2365	PL_statcache = data->statcache;
1921	}
1922		2366
		2367	EXTEND (SP, AvFILLp (av));
		2368	for (i = 0; i < AvFILLp (av); ++i)
		2369	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2370	}
		2371
		2372
		2373	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2374
		2375	BOOT:
		2376	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2377
		2378	SV *
		2379	_schedule (...)
		2380	PROTOTYPE: @
		2381	CODE:
		2382	{
		2383	static int incede;
		2384
		2385	api_cede_notself ();
		2386
		2387	++incede;
		2388	while (coro_nready >= incede && api_cede ())
		2389	;
		2390
		2391	sv_setsv (sv_activity, &PL_sv_undef);
		2392	if (coro_nready >= incede)
		2393	{
		2394	PUSHMARK (SP);
		2395	PUTBACK;
		2396	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2397	SPAGAIN;
		2398	}
		2399
		2400	--incede;
		2401	}
		2402
		2403
		2404	MODULE = Coro::State PACKAGE = PerlIO::cede
		2405
		2406	BOOT:
		2407	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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