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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.200 by root, Sun Oct 7 15:08:23 2007 UTC vs.
Revision 1.254 by root, Fri Nov 7 20:27:47 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
127	static perl_mutex coro_mutex;	147	static perl_mutex coro_lock;
128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	148	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	149	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
130	#else	150	#else
131	# define LOCK (void)0	151	# define LOCK (void)0
132	# define UNLOCK (void)0	152	# define UNLOCK (void)0
133	#endif	153	#endif
134		154
135	#define strpair(const) const, sizeof (const) - 1
136
137	/* helper storage struct for Coro::AIO */	155	/* helper storage struct for Coro::AIO */
138	struct io_state	156	struct io_state
139	{	157	{
		158	AV *res;
140	int errorno;	159	int errorno;
141	I32 laststype;	160	I32 laststype;
142	int laststatval;	161	int laststatval;
143	Stat_t statcache;	162	Stat_t statcache;
144	};	163	};
145		164
		165	static double (*nvtime)(); /* so why doesn't it take void? */
		166
		167	static U32 cctx_gen;
146	static size_t coro_stacksize = CORO_STACKSIZE;	168	static size_t cctx_stacksize = CORO_STACKSIZE;
147	static struct CoroAPI coroapi;	169	static struct CoroAPI coroapi;
148	static AV *main_mainstack; /* used to differentiate between $main and others */	170	static AV *main_mainstack; /* used to differentiate between $main and others */
149	static JMPENV *main_top_env;	171	static JMPENV *main_top_env;
150	static HV *coro_state_stash, *coro_stash;	172	static HV *coro_state_stash, *coro_stash;
151	static SV *coro_mortal; /* will be freed after next transfer */	173	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
152		174
153	static GV *irsgv; /* $/ */	175	static GV *irsgv; /* $/ */
154	static GV *stdoutgv; /* *STDOUT */	176	static GV *stdoutgv; /* *STDOUT */
155		177	static SV *rv_diehook;
		178	static SV *rv_warnhook;
156	static HV *hv_sig; /* %SIG */	179	static HV *hv_sig; /* %SIG */
157	static SV *sv_diehook;
158	static SV *sv_warnhook;
159		180
160	/* async_pool helper stuff */	181	/* async_pool helper stuff */
161	static SV *sv_pool_rss;	182	static SV *sv_pool_rss;
162	static SV *sv_pool_size;	183	static SV *sv_pool_size;
163	static AV *av_async_pool;	184	static AV *av_async_pool;
		185
		186	/* Coro::AnyEvent */
		187	static SV *sv_activity;
164		188
165	static struct coro_cctx *cctx_first;	189	static struct coro_cctx *cctx_first;
166	static int cctx_count, cctx_idle;	190	static int cctx_count, cctx_idle;
167		191
168	enum {	192	enum {
…		…
186	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	210	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	211	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188	JMPENV *top_env;	212	JMPENV *top_env;
189	coro_context cctx;	213	coro_context cctx;
190		214
		215	U32 gen;
191	#if CORO_USE_VALGRIND	216	#if CORO_USE_VALGRIND
192	int valgrind_id;	217	int valgrind_id;
193	#endif	218	#endif
194	unsigned char flags;	219	unsigned char flags;
195	} coro_cctx;	220	} coro_cctx;
…		…
221		246
222	/* process data */	247	/* process data */
223	AV *mainstack;	248	AV *mainstack;
224	perl_slots *slot; /* basically the saved sp */	249	perl_slots *slot; /* basically the saved sp */
225		250
226	/* data associated with this coroutine (initial args) */	251	AV *args; /* data associated with this coroutine (initial args) */
227	AV *args;	252	int refcnt; /* coroutines are refcounted, yes */
228	int refcnt;
229	int flags; /* CF_ flags */	253	int flags; /* CF_ flags */
		254	HV *hv; /* the perl hash associated with this coro, if any */
230		255
231	/* statistics */	256	/* statistics */
232	int usecount; /* number of transfers to this coro */	257	int usecount; /* number of transfers to this coro */
233		258
234	/* coro process data */	259	/* coro process data */
235	int prio;	260	int prio;
236	SV *throw;	261	SV *throw; /* exception to be thrown */
237		262
238	/* async_pool */	263	/* async_pool */
239	SV *saved_deffh;	264	SV *saved_deffh;
240		265
241	/* linked list */	266	/* linked list */
242	struct coro *next, *prev;	267	struct coro *next, *prev;
243	HV *hv; /* the perl hash associated with this coro, if any */
244	};	268	};
245		269
246	typedef struct coro *Coro__State;	270	typedef struct coro *Coro__State;
247	typedef struct coro *Coro__State_or_hashref;	271	typedef struct coro *Coro__State_or_hashref;
248		272
…		…
255	#define PRIO_IDLE -3	279	#define PRIO_IDLE -3
256	#define PRIO_MIN -4	280	#define PRIO_MIN -4
257		281
258	/* for Coro.pm */	282	/* for Coro.pm */
259	static SV *coro_current;	283	static SV *coro_current;
		284	static SV *coro_readyhook;
260	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	285	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];
261	static int coro_nready;	286	static int coro_nready;
262	static struct coro *coro_first;	287	static struct coro *coro_first;
263		288
264	/** lowlevel stuff **********************************************************/	289	/** lowlevel stuff **********************************************************/
265		290
266	static SV *	291	static SV *
267	coro_get_sv (const char *name, int create)	292	coro_get_sv (pTHX_ const char *name, int create)
268	{	293	{
269	#if PERL_VERSION_ATLEAST (5,9,0)	294	#if PERL_VERSION_ATLEAST (5,10,0)
270	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	295	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
271	get_sv (name, create);	296	get_sv (name, create);
272	#endif	297	#endif
273	return get_sv (name, create);	298	return get_sv (name, create);
274	}	299	}
275		300
276	static AV *	301	static AV *
277	coro_get_av (const char *name, int create)	302	coro_get_av (pTHX_ const char *name, int create)
278	{	303	{
279	#if PERL_VERSION_ATLEAST (5,9,0)	304	#if PERL_VERSION_ATLEAST (5,10,0)
280	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	305	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
281	get_av (name, create);	306	get_av (name, create);
282	#endif	307	#endif
283	return get_av (name, create);	308	return get_av (name, create);
284	}	309	}
285		310
286	static HV *	311	static HV *
287	coro_get_hv (const char *name, int create)	312	coro_get_hv (pTHX_ const char *name, int create)
288	{	313	{
289	#if PERL_VERSION_ATLEAST (5,9,0)	314	#if PERL_VERSION_ATLEAST (5,10,0)
290	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	315	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
291	get_hv (name, create);	316	get_hv (name, create);
292	#endif	317	#endif
293	return get_hv (name, create);	318	return get_hv (name, create);
294	}	319	}
…		…
299	AV *padlist = CvPADLIST (cv);	324	AV *padlist = CvPADLIST (cv);
300	AV *newpadlist, *newpad;	325	AV *newpadlist, *newpad;
301		326
302	newpadlist = newAV ();	327	newpadlist = newAV ();
303	AvREAL_off (newpadlist);	328	AvREAL_off (newpadlist);
304	#if PERL_VERSION_ATLEAST (5,9,0)	329	#if PERL_VERSION_ATLEAST (5,10,0)
305	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	330	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
306	#else	331	#else
307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	332	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
308	#endif	333	#endif
309	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	334	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
310	--AvFILLp (padlist);	335	--AvFILLp (padlist);
311		336
312	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	337	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
313	av_store (newpadlist, 1, (SV *)newpad);	338	av_store (newpadlist, 1, (SV *)newpad);
314		339
315	return newpadlist;	340	return newpadlist;
316	}	341	}
317		342
…		…
347		372
348	/* casting is fun. */	373	/* casting is fun. */
349	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	374	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
350	free_padlist (aTHX_ padlist);	375	free_padlist (aTHX_ padlist);
351		376
352	SvREFCNT_dec (av);	377	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
353		378
354	return 0;	379	return 0;
355	}	380	}
356		381
357	#define PERL_MAGIC_coro PERL_MAGIC_ext	382	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		383	#define CORO_MAGIC_type_state PERL_MAGIC_ext
358		384
359	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	385	static MGVTBL coro_cv_vtbl = {
		386	0, 0, 0, 0,
		387	coro_cv_free
		388	};
360		389
361	#define CORO_MAGIC(cv) \	390	#define CORO_MAGIC(sv, type) \
362	SvMAGIC (cv) \	391	SvMAGIC (sv) \
363	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	392	? SvMAGIC (sv)->mg_type == type \
364	? SvMAGIC (cv) \	393	? SvMAGIC (sv) \
365	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	394	: mg_find (sv, type) \
366	: 0	395	: 0
		396
		397	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		398	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
367		399
368	static struct coro *	400	static struct coro *
369	SvSTATE_ (pTHX_ SV *coro)	401	SvSTATE_ (pTHX_ SV *coro)
370	{	402	{
371	HV *stash;	403	HV *stash;
…		…
383	/* very slow, but rare, check */	415	/* very slow, but rare, check */
384	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	416	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
385	croak ("Coro::State object required");	417	croak ("Coro::State object required");
386	}	418	}
387		419
388	mg = CORO_MAGIC (coro);	420	mg = CORO_MAGIC_state (coro);
389	return (struct coro *)mg->mg_ptr;	421	return (struct coro *)mg->mg_ptr;
390	}	422	}
391		423
392	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	424	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
393		425
394	/* the next two functions merely cache the padlists */	426	/* the next two functions merely cache the padlists */
395	static void	427	static void
396	get_padlist (pTHX_ CV *cv)	428	get_padlist (pTHX_ CV *cv)
397	{	429	{
398	MAGIC *mg = CORO_MAGIC (cv);	430	MAGIC *mg = CORO_MAGIC_cv (cv);
399	AV *av;	431	AV *av;
400		432
401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	433	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	434	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
403	else	435	else
404	{	436	{
405	#if CORO_PREFER_PERL_FUNCTIONS	437	#if CORO_PREFER_PERL_FUNCTIONS
406	/* this is probably cleaner, but also slower? */	438	/* this is probably cleaner? but also slower! */
		439	/* in practise, it seems to be less stable */
407	CV *cp = Perl_cv_clone (cv);	440	CV *cp = Perl_cv_clone (cv);
408	CvPADLIST (cv) = CvPADLIST (cp);	441	CvPADLIST (cv) = CvPADLIST (cp);
409	CvPADLIST (cp) = 0;	442	CvPADLIST (cp) = 0;
410	SvREFCNT_dec (cp);	443	SvREFCNT_dec (cp);
411	#else	444	#else
…		…
415	}	448	}
416		449
417	static void	450	static void
418	put_padlist (pTHX_ CV *cv)	451	put_padlist (pTHX_ CV *cv)
419	{	452	{
420	MAGIC *mg = CORO_MAGIC (cv);	453	MAGIC *mg = CORO_MAGIC_cv (cv);
421	AV *av;	454	AV *av;
422		455
423	if (expect_false (!mg))	456	if (expect_false (!mg))
424	{	457	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
427	mg->mg_virtual = &vtbl_coro;
428	mg->mg_obj = (SV *)newAV ();
429	}
430		458
431	av = (AV *)mg->mg_obj;	459	av = (AV *)mg->mg_obj;
432		460
433	if (expect_false (AvFILLp (av) >= AvMAX (av)))	461	if (expect_false (AvFILLp (av) >= AvMAX (av)))
434	av_extend (av, AvMAX (av) + 1);	462	av_extend (av, AvMAX (av) + 1);
…		…
500		528
501	if (expect_true (CvDEPTH (cv)))	529	if (expect_true (CvDEPTH (cv)))
502	{	530	{
503	EXTEND (SP, 3);	531	EXTEND (SP, 3);
504	PUSHs ((SV *)CvPADLIST (cv));	532	PUSHs ((SV *)CvPADLIST (cv));
505	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	533	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
506	PUSHs ((SV *)cv);	534	PUSHs ((SV *)cv);
507		535
508	CvDEPTH (cv) = 0;	536	CvDEPTH (cv) = 0;
509	get_padlist (aTHX_ cv);	537	get_padlist (aTHX_ cv);
510	}	538	}
…		…
521		549
522	PUTBACK;	550	PUTBACK;
523	}	551	}
524		552
525	/* allocate some space on the context stack for our purposes */	553	/* allocate some space on the context stack for our purposes */
		554	/* we manually unroll here, as usually 2 slots is enough */
		555	if (SLOT_COUNT >= 1) CXINC;
		556	if (SLOT_COUNT >= 2) CXINC;
		557	if (SLOT_COUNT >= 3) CXINC;
526	{	558	{
527	/* we manually unroll here, as usually 2 slots is enough */
528	int i;	559	int i;
529	if (SLOT_COUNT >= 1) CXINC;
530	if (SLOT_COUNT >= 2) CXINC;
531	if (SLOT_COUNT >= 3) CXINC;
532	for (i = 3; i < SLOT_COUNT; ++i)	560	for (i = 3; i < SLOT_COUNT; ++i)
533	CXINC;	561	CXINC;
534
535	cxstack_ix -= SLOT_COUNT; /* undo allocation */
536	}	562	}
		563	cxstack_ix -= SLOT_COUNT; /* undo allocation */
537		564
538	c->mainstack = PL_mainstack;	565	c->mainstack = PL_mainstack;
539		566
540	{	567	{
541	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	568	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
…		…
591		618
592	New(54,PL_savestack,24,ANY);	619	New(54,PL_savestack,24,ANY);
593	PL_savestack_ix = 0;	620	PL_savestack_ix = 0;
594	PL_savestack_max = 24;	621	PL_savestack_max = 24;
595		622
596	#if !PERL_VERSION_ATLEAST (5,9,0)	623	#if !PERL_VERSION_ATLEAST (5,10,0)
597	New(54,PL_retstack,4,OP*);	624	New(54,PL_retstack,4,OP*);
598	PL_retstack_ix = 0;	625	PL_retstack_ix = 0;
599	PL_retstack_max = 4;	626	PL_retstack_max = 4;
600	#endif	627	#endif
601	}	628	}
…		…
603		630
604	/*	631	/*
605	* destroy the stacks, the callchain etc...	632	* destroy the stacks, the callchain etc...
606	*/	633	*/
607	static void	634	static void
608	coro_destroy_stacks (pTHX)	635	coro_destruct_stacks (pTHX)
609	{	636	{
610	while (PL_curstackinfo->si_next)	637	while (PL_curstackinfo->si_next)
611	PL_curstackinfo = PL_curstackinfo->si_next;	638	PL_curstackinfo = PL_curstackinfo->si_next;
612		639
613	while (PL_curstackinfo)	640	while (PL_curstackinfo)
…		…
624		651
625	Safefree (PL_tmps_stack);	652	Safefree (PL_tmps_stack);
626	Safefree (PL_markstack);	653	Safefree (PL_markstack);
627	Safefree (PL_scopestack);	654	Safefree (PL_scopestack);
628	Safefree (PL_savestack);	655	Safefree (PL_savestack);
629	#if !PERL_VERSION_ATLEAST (5,9,0)	656	#if !PERL_VERSION_ATLEAST (5,10,0)
630	Safefree (PL_retstack);	657	Safefree (PL_retstack);
631	#endif	658	#endif
632	}	659	}
633		660
634	static size_t	661	static size_t
…		…
650	#undef VAR	677	#undef VAR
651	}	678	}
652	else	679	else
653	slot = coro->slot;	680	slot = coro->slot;
654		681
		682	if (slot)
		683	{
655	rss += sizeof (slot->curstackinfo);	684	rss += sizeof (slot->curstackinfo);
656	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	685	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
657	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	686	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
658	rss += slot->tmps_max * sizeof (SV *);	687	rss += slot->tmps_max * sizeof (SV *);
659	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	688	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
660	rss += slot->scopestack_max * sizeof (I32);	689	rss += slot->scopestack_max * sizeof (I32);
661	rss += slot->savestack_max * sizeof (ANY);	690	rss += slot->savestack_max * sizeof (ANY);
662		691
663	#if !PERL_VERSION_ATLEAST (5,9,0)	692	#if !PERL_VERSION_ATLEAST (5,10,0)
664	rss += slot->retstack_max * sizeof (OP *);	693	rss += slot->retstack_max * sizeof (OP *);
665	#endif	694	#endif
		695	}
666	}	696	}
667		697
668	return rss;	698	return rss;
669	}	699	}
670		700
671	/** coroutine stack handling ************************************************/	701	/** coroutine stack handling ************************************************/
		702
		703	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		704	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		705	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		706
		707	/* apparently < 5.8.8 */
		708	#ifndef MgPV_nolen_const
		709	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		710	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		711	(const char*)(mg)->mg_ptr)
		712	#endif
		713
		714	/*
		715	* This overrides the default magic get method of %SIG elements.
		716	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		717	* and instead of tryign to save and restore the hash elements, we just provide
		718	* readback here.
		719	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		720	* not expecting this to actually change the hook. This is a potential problem
		721	* when a schedule happens then, but we ignore this.
		722	*/
		723	static int
		724	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		725	{
		726	const char *s = MgPV_nolen_const (mg);
		727
		728	if (*s == '_')
		729	{
		730	SV **svp = 0;
		731
		732	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		733	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		734
		735	if (svp)
		736	{
		737	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		738	return 0;
		739	}
		740	}
		741
		742	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		743	}
		744
		745	static int
		746	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		747	{
		748	const char *s = MgPV_nolen_const (mg);
		749
		750	if (*s == '_')
		751	{
		752	SV **svp = 0;
		753
		754	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		755	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		756
		757	if (svp)
		758	{
		759	SV *old = *svp;
		760	*svp = 0;
		761	SvREFCNT_dec (old);
		762	return 0;
		763	}
		764	}
		765
		766	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		767	}
		768
		769	static int
		770	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		771	{
		772	const char *s = MgPV_nolen_const (mg);
		773
		774	if (*s == '_')
		775	{
		776	SV **svp = 0;
		777
		778	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		779	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		780
		781	if (svp)
		782	{
		783	SV *old = *svp;
		784	*svp = newSVsv (sv);
		785	SvREFCNT_dec (old);
		786	return 0;
		787	}
		788	}
		789
		790	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		791	}
672		792
673	static void	793	static void
674	coro_setup (pTHX_ struct coro *coro)	794	coro_setup (pTHX_ struct coro *coro)
675	{	795	{
676	/*	796	/*
…		…
685	PL_curpm = 0;	805	PL_curpm = 0;
686	PL_curpad = 0;	806	PL_curpad = 0;
687	PL_localizing = 0;	807	PL_localizing = 0;
688	PL_dirty = 0;	808	PL_dirty = 0;
689	PL_restartop = 0;	809	PL_restartop = 0;
690	SvREFCNT_inc (PL_diehook ); hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);	810	#if PERL_VERSION_ATLEAST (5,10,0)
691	SvREFCNT_inc (PL_warnhook); hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);	811	PL_parser = 0;
		812	#endif
		813
		814	/* recreate the die/warn hooks */
		815	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		816	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
692		817
693	GvSV (PL_defgv) = newSV (0);	818	GvSV (PL_defgv) = newSV (0);
694	GvAV (PL_defgv) = coro->args; coro->args = 0;	819	GvAV (PL_defgv) = coro->args; coro->args = 0;
695	GvSV (PL_errgv) = newSV (0);	820	GvSV (PL_errgv) = newSV (0);
696	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	821	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
697	PL_rs = newSVsv (GvSV (irsgv));	822	PL_rs = newSVsv (GvSV (irsgv));
698	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	823	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
699		824
700	{	825	{
701	dSP;	826	dSP;
702	LOGOP myop;	827	LOGOP myop;
703		828
…		…
711	PL_op = (OP *)&myop;	836	PL_op = (OP *)&myop;
712	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	837	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
713	SPAGAIN;	838	SPAGAIN;
714	}	839	}
715		840
716	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */	841	/* this newly created coroutine might be run on an existing cctx which most
		842	* likely was suspended in set_stacklevel, called from entersub.
		843	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		844	* so we ENTER here for symmetry
		845	*/
		846	ENTER;
717	}	847	}
718		848
719	static void	849	static void
720	coro_destroy (pTHX_ struct coro *coro)	850	coro_destruct (pTHX_ struct coro *coro)
721	{	851	{
722	if (!IN_DESTRUCT)	852	if (!IN_DESTRUCT)
723	{	853	{
724	/* restore all saved variables and stuff */	854	/* restore all saved variables and stuff */
725	LEAVE_SCOPE (0);	855	LEAVE_SCOPE (0);
…		…
747	SvREFCNT_dec (PL_warnhook);	877	SvREFCNT_dec (PL_warnhook);
748		878
749	SvREFCNT_dec (coro->saved_deffh);	879	SvREFCNT_dec (coro->saved_deffh);
750	SvREFCNT_dec (coro->throw);	880	SvREFCNT_dec (coro->throw);
751		881
752	coro_destroy_stacks (aTHX);	882	coro_destruct_stacks (aTHX);
753	}	883	}
754		884
755	static void	885	static void
756	free_coro_mortal (pTHX)	886	free_coro_mortal (pTHX)
757	{	887	{
…		…
794	: cx->blk_gimme == G_SCALAR ? bot + 1	924	: cx->blk_gimme == G_SCALAR ? bot + 1
795	: bot;	925	: bot;
796		926
797	av_extend (av, top - bot);	927	av_extend (av, top - bot);
798	while (bot < top)	928	while (bot < top)
799	av_push (av, SvREFCNT_inc (*bot++));	929	av_push (av, SvREFCNT_inc_NN (*bot++));
800		930
801	PL_runops = RUNOPS_DEFAULT;	931	PL_runops = RUNOPS_DEFAULT;
802	ENTER;	932	ENTER;
803	SAVETMPS;	933	SAVETMPS;
804	EXTEND (SP, 3);	934	EXTEND (SP, 3);
805	PUSHMARK (SP);	935	PUSHMARK (SP);
806	PUSHs (&PL_sv_no);	936	PUSHs (&PL_sv_no);
807	PUSHs (fullname);	937	PUSHs (fullname);
808	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	938	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
809	PUTBACK;	939	PUTBACK;
810	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	940	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
811	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	941	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
812	SPAGAIN;	942	SPAGAIN;
813	FREETMPS;	943	FREETMPS;
814	LEAVE;	944	LEAVE;
815	PL_runops = runops_trace;	945	PL_runops = runops_trace;
…		…
842	SAVETMPS;	972	SAVETMPS;
843	EXTEND (SP, 3);	973	EXTEND (SP, 3);
844	PUSHMARK (SP);	974	PUSHMARK (SP);
845	PUSHs (&PL_sv_yes);	975	PUSHs (&PL_sv_yes);
846	PUSHs (fullname);	976	PUSHs (fullname);
847	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	977	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
848	PUTBACK;	978	PUTBACK;
849	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	979	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
850	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	980	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
851	SPAGAIN;	981	SPAGAIN;
852	FREETMPS;	982	FREETMPS;
853	LEAVE;	983	LEAVE;
854	PL_runops = runops_trace;	984	PL_runops = runops_trace;
…		…
868	PL_runops = RUNOPS_DEFAULT;	998	PL_runops = RUNOPS_DEFAULT;
869	PUSHMARK (SP);	999	PUSHMARK (SP);
870	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	1000	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
871	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	1001	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
872	PUTBACK;	1002	PUTBACK;
873	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);	1003	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
874	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1004	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
875	SPAGAIN;	1005	SPAGAIN;
876	FREETMPS;	1006	FREETMPS;
877	LEAVE;	1007	LEAVE;
878	PL_runops = runops_trace;	1008	PL_runops = runops_trace;
…		…
888		1018
889	/* inject a fake call to Coro::State::_cctx_init into the execution */	1019	/* inject a fake call to Coro::State::_cctx_init into the execution */
890	/* _cctx_init should be careful, as it could be called at almost any time */	1020	/* _cctx_init should be careful, as it could be called at almost any time */
891	/* during execution of a perl program */	1021	/* during execution of a perl program */
892	static void NOINLINE	1022	static void NOINLINE
893	prepare_cctx (pTHX_ coro_cctx *cctx)	1023	cctx_prepare (pTHX_ coro_cctx *cctx)
894	{	1024	{
895	dSP;	1025	dSP;
896	LOGOP myop;	1026	LOGOP myop;
897		1027
898	PL_top_env = &PL_start_env;	1028	PL_top_env = &PL_start_env;
…		…
916		1046
917	/*	1047	/*
918	* this is a _very_ stripped down perl interpreter ;)	1048	* this is a _very_ stripped down perl interpreter ;)
919	*/	1049	*/
920	static void	1050	static void
921	coro_run (void *arg)	1051	cctx_run (void *arg)
922	{	1052	{
923	dTHX;	1053	dTHX;
924		1054
925	/* coro_run is the alternative tail of transfer(), so unlock here. */	1055	/* cctx_run is the alternative tail of transfer(), so unlock here. */
926	UNLOCK;	1056	UNLOCK;
927		1057
928	/* we now skip the entersub that lead to transfer() */	1058	/* we now skip the entersub that lead to transfer() */
929	PL_op = PL_op->op_next;	1059	PL_op = PL_op->op_next;
930		1060
931	/* inject a fake subroutine call to cctx_init */	1061	/* inject a fake subroutine call to cctx_init */
932	prepare_cctx (aTHX_ (coro_cctx *)arg);	1062	cctx_prepare (aTHX_ (coro_cctx *)arg);
933		1063
934	/* somebody or something will hit me for both perl_run and PL_restartop */	1064	/* somebody or something will hit me for both perl_run and PL_restartop */
935	PL_restartop = PL_op;	1065	PL_restartop = PL_op;
936	perl_run (PL_curinterp);	1066	perl_run (PL_curinterp);
937		1067
…		…
952	coro_cctx *cctx;	1082	coro_cctx *cctx;
953	void *stack_start;	1083	void *stack_start;
954	size_t stack_size;	1084	size_t stack_size;
955		1085
956	++cctx_count;	1086	++cctx_count;
957
958	Newz (0, cctx, 1, coro_cctx);	1087	Newz (0, cctx, 1, coro_cctx);
959		1088
		1089	cctx->gen = cctx_gen;
		1090
960	#if HAVE_MMAP	1091	#if HAVE_MMAP
961
962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1092	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963	/* mmap supposedly does allocate-on-write for us */	1093	/* mmap supposedly does allocate-on-write for us */
964	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1094	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965		1095
966	if (cctx->sptr != (void *)-1)	1096	if (cctx->sptr != (void *)-1)
967	{	1097	{
…		…
973	cctx->flags |= CC_MAPPED;	1103	cctx->flags |= CC_MAPPED;
974	}	1104	}
975	else	1105	else
976	#endif	1106	#endif
977	{	1107	{
978	cctx->ssize = coro_stacksize * (long)sizeof (long);	1108	cctx->ssize = cctx_stacksize * (long)sizeof (long);
979	New (0, cctx->sptr, coro_stacksize, long);	1109	New (0, cctx->sptr, cctx_stacksize, long);
980		1110
981	if (!cctx->sptr)	1111	if (!cctx->sptr)
982	{	1112	{
983	perror ("FATAL: unable to allocate stack for coroutine");	1113	perror ("FATAL: unable to allocate stack for coroutine");
984	_exit (EXIT_FAILURE);	1114	_exit (EXIT_FAILURE);
…		…
987	stack_start = cctx->sptr;	1117	stack_start = cctx->sptr;
988	stack_size = cctx->ssize;	1118	stack_size = cctx->ssize;
989	}	1119	}
990		1120
991	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1121	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
992	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1122	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
993		1123
994	return cctx;	1124	return cctx;
995	}	1125	}
996		1126
997	static void	1127	static void
…		…
999	{	1129	{
1000	if (!cctx)	1130	if (!cctx)
1001	return;	1131	return;
1002		1132
1003	--cctx_count;	1133	--cctx_count;
		1134	coro_destroy (&cctx->cctx);
1004		1135
		1136	/* coro_transfer creates new, empty cctx's */
		1137	if (cctx->sptr)
		1138	{
1005	#if CORO_USE_VALGRIND	1139	#if CORO_USE_VALGRIND
1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1140	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1007	#endif	1141	#endif
1008		1142
1009	#if HAVE_MMAP	1143	#if HAVE_MMAP
1010	if (cctx->flags & CC_MAPPED)	1144	if (cctx->flags & CC_MAPPED)
1011	munmap (cctx->sptr, cctx->ssize);	1145	munmap (cctx->sptr, cctx->ssize);
1012	else	1146	else
1013	#endif	1147	#endif
1014	Safefree (cctx->sptr);	1148	Safefree (cctx->sptr);
		1149	}
1015		1150
1016	Safefree (cctx);	1151	Safefree (cctx);
1017	}	1152	}
1018		1153
1019	/* wether this cctx should be destructed */	1154	/* wether this cctx should be destructed */
1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1155	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021		1156
1022	static coro_cctx *	1157	static coro_cctx *
1023	cctx_get (pTHX)	1158	cctx_get (pTHX)
1024	{	1159	{
1025	while (expect_true (cctx_first))	1160	while (expect_true (cctx_first))
…		…
1038	}	1173	}
1039		1174
1040	static void	1175	static void
1041	cctx_put (coro_cctx *cctx)	1176	cctx_put (coro_cctx *cctx)
1042	{	1177	{
		1178	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1179
1043	/* free another cctx if overlimit */	1180	/* free another cctx if overlimit */
1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1181	if (expect_false (cctx_idle >= cctx_max_idle))
1045	{	1182	{
1046	coro_cctx *first = cctx_first;	1183	coro_cctx *first = cctx_first;
1047	cctx_first = first->next;	1184	cctx_first = first->next;
1048	--cctx_idle;	1185	--cctx_idle;
1049		1186
…		…
1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1206	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1070		1207
1071	if (expect_false (next->flags & CF_DESTROYED))	1208	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");	1209	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1073		1210
1074	if (
1075	#if PERL_VERSION_ATLEAST (5,9,0)	1211	#if !PERL_VERSION_ATLEAST (5,10,0)
1076	expect_false (PL_parser)
1077	#else
1078	expect_false (PL_lex_state != LEX_NOTPARSING)	1212	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1079	#endif
1080	)
1081	croak ("Coro::State::transfer called while parsing, but this is not supported");	1213	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1214	#endif
1082	}	1215	}
1083	}	1216	}
1084		1217
1085	/* always use the TRANSFER macro */	1218	/* always use the TRANSFER macro */
1086	static void NOINLINE	1219	static void NOINLINE
1087	transfer (pTHX_ struct coro *prev, struct coro *next)	1220	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088	{	1221	{
1089	dSTACKLEVEL;	1222	dSTACKLEVEL;
1090		1223
1091	/* sometimes transfer is only called to set idle_sp */	1224	/* sometimes transfer is only called to set idle_sp */
1092	if (expect_false (!next))	1225	if (expect_false (!next))
…		…
1094	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1227	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1095	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1228	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1096	}	1229	}
1097	else if (expect_true (prev != next))	1230	else if (expect_true (prev != next))
1098	{	1231	{
		1232	static volatile int has_throw;
1099	coro_cctx *prev__cctx;	1233	coro_cctx *prev__cctx;
1100		1234
1101	if (expect_false (prev->flags & CF_NEW))	1235	if (expect_false (prev->flags & CF_NEW))
1102	{	1236	{
1103	/* create a new empty context */	1237	/* create a new empty/source context */
		1238	++cctx_count;
1104	Newz (0, prev->cctx, 1, coro_cctx);	1239	New (0, prev->cctx, 1, coro_cctx);
		1240	prev->cctx->sptr = 0;
		1241	coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
		1242
1105	prev->flags &= ~CF_NEW;	1243	prev->flags &= ~CF_NEW;
1106	prev->flags |= CF_RUNNING;	1244	prev->flags |= CF_RUNNING;
1107	}	1245	}
1108		1246
1109	prev->flags &= ~CF_RUNNING;	1247	prev->flags &= ~CF_RUNNING;
1110	next->flags |= CF_RUNNING;	1248	next->flags |= CF_RUNNING;
1111		1249
1112	LOCK;	1250	LOCK;
		1251
		1252	/* first get rid of the old state */
		1253	save_perl (aTHX_ prev);
1113		1254
1114	if (expect_false (next->flags & CF_NEW))	1255	if (expect_false (next->flags & CF_NEW))
1115	{	1256	{
1116	/* need to start coroutine */	1257	/* need to start coroutine */
1117	next->flags &= ~CF_NEW;	1258	next->flags &= ~CF_NEW;
1118	/* first get rid of the old state */
1119	save_perl (aTHX_ prev);
1120	/* setup coroutine call */	1259	/* setup coroutine call */
1121	coro_setup (aTHX_ next);	1260	coro_setup (aTHX_ next);
1122	}	1261	}
1123	else	1262	else
1124	{
1125	/* coroutine already started */
1126	save_perl (aTHX_ prev);
1127	load_perl (aTHX_ next);	1263	load_perl (aTHX_ next);
1128	}
1129		1264
1130	prev__cctx = prev->cctx;	1265	prev__cctx = prev->cctx;
1131		1266
1132	/* possibly "free" the cctx */	1267	/* possibly "free" the cctx */
1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1268	if (expect_true (
		1269	prev__cctx->idle_sp == STACKLEVEL
		1270	&& !(prev__cctx->flags & CC_TRACE)
		1271	&& !force_cctx
		1272	))
1134	{	1273	{
1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1274	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1275	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1137		1276
1138	prev->cctx = 0;	1277	prev->cctx = 0;
1139		1278
1140	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1279	/* 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 */	1280	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1142	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1281	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1282	if (!next->cctx)
1143	next->cctx = cctx_get (aTHX);	1283	next->cctx = cctx_get (aTHX);
1144		1284
1145	cctx_put (prev__cctx);	1285	cctx_put (prev__cctx);
1146	}	1286	}
1147		1287
1148	++next->usecount;	1288	++next->usecount;
1149		1289
1150	if (expect_true (!next->cctx))	1290	if (expect_true (!next->cctx))
1151	next->cctx = cctx_get (aTHX);	1291	next->cctx = cctx_get (aTHX);
		1292
		1293	has_throw = !!next->throw;
1152		1294
1153	if (expect_false (prev__cctx != next->cctx))	1295	if (expect_false (prev__cctx != next->cctx))
1154	{	1296	{
1155	prev__cctx->top_env = PL_top_env;	1297	prev__cctx->top_env = PL_top_env;
1156	PL_top_env = next->cctx->top_env;	1298	PL_top_env = next->cctx->top_env;
…		…
1158	}	1300	}
1159		1301
1160	free_coro_mortal (aTHX);	1302	free_coro_mortal (aTHX);
1161	UNLOCK;	1303	UNLOCK;
1162		1304
1163	if (expect_false (prev->throw || next->throw))	1305	if (expect_false (has_throw))
1164	{	1306	{
1165	struct coro *coro = SvSTATE (coro_current);	1307	struct coro *coro = SvSTATE (coro_current);
1166		1308
1167	if (coro->throw)	1309	if (coro->throw)
1168	{	1310	{
…		…
1178	struct transfer_args	1320	struct transfer_args
1179	{	1321	{
1180	struct coro *prev, *next;	1322	struct coro *prev, *next;
1181	};	1323	};
1182		1324
1183	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1325	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1184	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1326	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1185		1327
1186	/** high level stuff ********************************************************/	1328	/** high level stuff ********************************************************/
1187		1329
1188	static int	1330	static int
…		…
1212	croak ("FATAL: tried to destroy currently running coroutine");	1354	croak ("FATAL: tried to destroy currently running coroutine");
1213		1355
1214	save_perl (aTHX_ &temp);	1356	save_perl (aTHX_ &temp);
1215	load_perl (aTHX_ coro);	1357	load_perl (aTHX_ coro);
1216		1358
1217	coro_destroy (aTHX_ coro);	1359	coro_destruct (aTHX_ coro);
1218		1360
1219	load_perl (aTHX_ &temp);	1361	load_perl (aTHX_ &temp);
1220		1362
1221	coro->slot = 0;	1363	coro->slot = 0;
1222	}	1364	}
…		…
1282	{	1424	{
1283	dTHX;	1425	dTHX;
1284	struct transfer_args ta;	1426	struct transfer_args ta;
1285		1427
1286	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1428	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1287	TRANSFER (ta);	1429	TRANSFER (ta, 1);
1288	}	1430	}
1289		1431
1290	/** Coro ********************************************************************/	1432	/** Coro ********************************************************************/
1291		1433
1292	static void	1434	static void
…		…
1294	{	1436	{
1295	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1437	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1296	}	1438	}
1297		1439
1298	static SV *	1440	static SV *
1299	coro_deq (pTHX_ int min_prio)	1441	coro_deq (pTHX)
1300	{	1442	{
1301	int prio = PRIO_MAX - PRIO_MIN;	1443	int prio;
1302		1444
1303	min_prio -= PRIO_MIN;
1304	if (min_prio < 0)
1305	min_prio = 0;
1306
1307	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1445	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1308	if (AvFILLp (coro_ready [prio]) >= 0)	1446	if (AvFILLp (coro_ready [prio]) >= 0)
1309	return av_shift (coro_ready [prio]);	1447	return av_shift (coro_ready [prio]);
1310		1448
1311	return 0;	1449	return 0;
1312	}	1450	}
…		…
1314	static int	1452	static int
1315	api_ready (SV *coro_sv)	1453	api_ready (SV *coro_sv)
1316	{	1454	{
1317	dTHX;	1455	dTHX;
1318	struct coro *coro;	1456	struct coro *coro;
		1457	SV *sv_hook;
		1458	void (*xs_hook)(void);
1319		1459
1320	if (SvROK (coro_sv))	1460	if (SvROK (coro_sv))
1321	coro_sv = SvRV (coro_sv);	1461	coro_sv = SvRV (coro_sv);
1322		1462
1323	coro = SvSTATE (coro_sv);	1463	coro = SvSTATE (coro_sv);
…		…
1326	return 0;	1466	return 0;
1327		1467
1328	coro->flags |= CF_READY;	1468	coro->flags |= CF_READY;
1329		1469
1330	LOCK;	1470	LOCK;
		1471
		1472	sv_hook = coro_nready ? 0 : coro_readyhook;
		1473	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1474
1331	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1475	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1332	++coro_nready;	1476	++coro_nready;
		1477
1333	UNLOCK;	1478	UNLOCK;
		1479
		1480	if (sv_hook)
		1481	{
		1482	dSP;
		1483
		1484	ENTER;
		1485	SAVETMPS;
		1486
		1487	PUSHMARK (SP);
		1488	PUTBACK;
		1489	call_sv (sv_hook, G_DISCARD);
		1490	SPAGAIN;
		1491
		1492	FREETMPS;
		1493	LEAVE;
		1494	}
		1495
		1496	if (xs_hook)
		1497	xs_hook ();
1334		1498
1335	return 1;	1499	return 1;
1336	}	1500	}
1337		1501
1338	static int	1502	static int
…		…
1348	SV *prev_sv, *next_sv;	1512	SV *prev_sv, *next_sv;
1349		1513
1350	for (;;)	1514	for (;;)
1351	{	1515	{
1352	LOCK;	1516	LOCK;
1353	next_sv = coro_deq (aTHX_ PRIO_MIN);	1517	next_sv = coro_deq (aTHX);
1354		1518
1355	/* nothing to schedule: call the idle handler */	1519	/* nothing to schedule: call the idle handler */
1356	if (expect_false (!next_sv))	1520	if (expect_false (!next_sv))
1357	{	1521	{
1358	dSP;	1522	dSP;
…		…
1362	SAVETMPS;	1526	SAVETMPS;
1363		1527
1364	PUSHMARK (SP);	1528	PUSHMARK (SP);
1365	PUTBACK;	1529	PUTBACK;
1366	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1530	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1531	SPAGAIN;
1367		1532
1368	FREETMPS;	1533	FREETMPS;
1369	LEAVE;	1534	LEAVE;
1370	continue;	1535	continue;
1371	}	1536	}
…		…
1426	{	1591	{
1427	dTHX;	1592	dTHX;
1428	struct transfer_args ta;	1593	struct transfer_args ta;
1429		1594
1430	prepare_schedule (aTHX_ &ta);	1595	prepare_schedule (aTHX_ &ta);
1431	TRANSFER (ta);	1596	TRANSFER (ta, 1);
1432	}	1597	}
1433		1598
1434	static int	1599	static int
1435	api_cede (void)	1600	api_cede (void)
1436	{	1601	{
…		…
1439		1604
1440	prepare_cede (aTHX_ &ta);	1605	prepare_cede (aTHX_ &ta);
1441		1606
1442	if (expect_true (ta.prev != ta.next))	1607	if (expect_true (ta.prev != ta.next))
1443	{	1608	{
1444	TRANSFER (ta);	1609	TRANSFER (ta, 1);
1445	return 1;	1610	return 1;
1446	}	1611	}
1447	else	1612	else
1448	return 0;	1613	return 0;
1449	}	1614	}
…		…
1454	dTHX;	1619	dTHX;
1455	struct transfer_args ta;	1620	struct transfer_args ta;
1456		1621
1457	if (prepare_cede_notself (aTHX_ &ta))	1622	if (prepare_cede_notself (aTHX_ &ta))
1458	{	1623	{
1459	TRANSFER (ta);	1624	TRANSFER (ta, 1);
1460	return 1;	1625	return 1;
1461	}	1626	}
1462	else	1627	else
1463	return 0;	1628	return 0;
1464	}	1629	}
…		…
1487	else	1652	else
1488	coro->slot->runops = RUNOPS_DEFAULT;	1653	coro->slot->runops = RUNOPS_DEFAULT;
1489	}	1654	}
1490	}	1655	}
1491		1656
		1657	static int
		1658	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1659	{
		1660	AV *padlist;
		1661	AV *av = (AV *)mg->mg_obj;
		1662
		1663	abort ();
		1664
		1665	return 0;
		1666	}
		1667
		1668	static MGVTBL coro_gensub_vtbl = {
		1669	0, 0, 0, 0,
		1670	coro_gensub_free
		1671	};
		1672
		1673	/*****************************************************************************/
		1674	/* PerlIO::cede */
		1675
		1676	typedef struct
		1677	{
		1678	PerlIOBuf base;
		1679	NV next, every;
		1680	} PerlIOCede;
		1681
		1682	static IV
		1683	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1684	{
		1685	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1686
		1687	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1688	self->next = nvtime () + self->every;
		1689
		1690	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1691	}
		1692
		1693	static SV *
		1694	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1695	{
		1696	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1697
		1698	return newSVnv (self->every);
		1699	}
		1700
		1701	static IV
		1702	PerlIOCede_flush (pTHX_ PerlIO *f)
		1703	{
		1704	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1705	double now = nvtime ();
		1706
		1707	if (now >= self->next)
		1708	{
		1709	api_cede ();
		1710	self->next = now + self->every;
		1711	}
		1712
		1713	return PerlIOBuf_flush (aTHX_ f);
		1714	}
		1715
		1716	static PerlIO_funcs PerlIO_cede =
		1717	{
		1718	sizeof(PerlIO_funcs),
		1719	"cede",
		1720	sizeof(PerlIOCede),
		1721	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1722	PerlIOCede_pushed,
		1723	PerlIOBuf_popped,
		1724	PerlIOBuf_open,
		1725	PerlIOBase_binmode,
		1726	PerlIOCede_getarg,
		1727	PerlIOBase_fileno,
		1728	PerlIOBuf_dup,
		1729	PerlIOBuf_read,
		1730	PerlIOBuf_unread,
		1731	PerlIOBuf_write,
		1732	PerlIOBuf_seek,
		1733	PerlIOBuf_tell,
		1734	PerlIOBuf_close,
		1735	PerlIOCede_flush,
		1736	PerlIOBuf_fill,
		1737	PerlIOBase_eof,
		1738	PerlIOBase_error,
		1739	PerlIOBase_clearerr,
		1740	PerlIOBase_setlinebuf,
		1741	PerlIOBuf_get_base,
		1742	PerlIOBuf_bufsiz,
		1743	PerlIOBuf_get_ptr,
		1744	PerlIOBuf_get_cnt,
		1745	PerlIOBuf_set_ptrcnt,
		1746	};
		1747
		1748
1492	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1749	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1493		1750
1494	PROTOTYPES: DISABLE	1751	PROTOTYPES: DISABLE
1495		1752
1496	BOOT:	1753	BOOT:
1497	{	1754	{
1498	#ifdef USE_ITHREADS	1755	#ifdef USE_ITHREADS
1499	MUTEX_INIT (&coro_mutex);	1756	MUTEX_INIT (&coro_lock);
1500	#endif	1757	#endif
1501	BOOT_PAGESIZE;	1758	BOOT_PAGESIZE;
1502		1759
1503	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1760	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1504	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1761	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1505		1762
		1763	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1764	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1765	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1766
1506	hv_sig = coro_get_hv ("SIG", TRUE);	1767	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1507	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1768	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1508	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);	1769	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1509
1510	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1511	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1512		1770
1513	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1771	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1514		1772
1515	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1773	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1516	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1774	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1521	main_top_env = PL_top_env;	1779	main_top_env = PL_top_env;
1522		1780
1523	while (main_top_env->je_prev)	1781	while (main_top_env->je_prev)
1524	main_top_env = main_top_env->je_prev;	1782	main_top_env = main_top_env->je_prev;
1525		1783
1526	coroapi.ver = CORO_API_VERSION;	1784	coroapi.ver = CORO_API_VERSION;
		1785	coroapi.rev = CORO_API_REVISION;
1527	coroapi.transfer = api_transfer;	1786	coroapi.transfer = api_transfer;
		1787
		1788	{
		1789	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1790
		1791	if (!svp) croak ("Time::HiRes is required");
		1792	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1793
		1794	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1795	}
1528		1796
1529	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1797	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1530	}	1798	}
1531		1799
1532	SV *	1800	SV *
1533	new (char *klass, ...)	1801	new (char *klass, ...)
1534	CODE:	1802	CODE:
1535	{	1803	{
1536	struct coro *coro;	1804	struct coro *coro;
		1805	MAGIC *mg;
1537	HV *hv;	1806	HV *hv;
1538	int i;	1807	int i;
1539		1808
1540	Newz (0, coro, 1, struct coro);	1809	Newz (0, coro, 1, struct coro);
1541	coro->args = newAV ();	1810	coro->args = newAV ();
…		…
1544	if (coro_first) coro_first->prev = coro;	1813	if (coro_first) coro_first->prev = coro;
1545	coro->next = coro_first;	1814	coro->next = coro_first;
1546	coro_first = coro;	1815	coro_first = coro;
1547		1816
1548	coro->hv = hv = newHV ();	1817	coro->hv = hv = newHV ();
1549	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1818	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1819	mg->mg_flags |= MGf_DUP;
1550	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1820	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1551		1821
1552	av_extend (coro->args, items - 1);	1822	av_extend (coro->args, items - 1);
1553	for (i = 1; i < items; i++)	1823	for (i = 1; i < items; i++)
1554	av_push (coro->args, newSVsv (ST (i)));	1824	av_push (coro->args, newSVsv (ST (i)));
…		…
1568	Coro::cede_notself = 4	1838	Coro::cede_notself = 4
1569	CODE:	1839	CODE:
1570	{	1840	{
1571	struct transfer_args ta;	1841	struct transfer_args ta;
1572		1842
		1843	PUTBACK;
1573	switch (ix)	1844	switch (ix)
1574	{	1845	{
1575	case 0:	1846	case 0:
1576	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1847	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1577	ta.next = 0;	1848	ta.next = 0;
1578	break;	1849	break;
1579		1850
1580	case 1:	1851	case 1:
1581	if (items != 2)	1852	if (items != 2)
1582	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1853	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1583		1854
1584	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1855	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1585	break;	1856	break;
1586		1857
1587	case 2:	1858	case 2:
…		…
1596	if (!prepare_cede_notself (aTHX_ &ta))	1867	if (!prepare_cede_notself (aTHX_ &ta))
1597	XSRETURN_EMPTY;	1868	XSRETURN_EMPTY;
1598		1869
1599	break;	1870	break;
1600	}	1871	}
		1872	SPAGAIN;
1601		1873
1602	BARRIER;	1874	BARRIER;
		1875	PUTBACK;
1603	TRANSFER (ta);	1876	TRANSFER (ta, 0);
1604		1877	SPAGAIN; /* might be the sp of a different coroutine now */
1605	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))	1878	/* be extra careful not to ever do anything after TRANSFER */
1606	XSRETURN_YES;
1607	}	1879	}
1608		1880
1609	bool	1881	bool
1610	_destroy (SV *coro_sv)	1882	_destroy (SV *coro_sv)
1611	CODE:	1883	CODE:
1612	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1884	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1613	OUTPUT:	1885	OUTPUT:
1614	RETVAL	1886	RETVAL
1615		1887
1616	void	1888	void
1617	_exit (code)	1889	_exit (int code)
1618	int code
1619	PROTOTYPE: $	1890	PROTOTYPE: $
1620	CODE:	1891	CODE:
1621	_exit (code);	1892	_exit (code);
1622		1893
1623	int	1894	int
1624	cctx_stacksize (int new_stacksize = 0)	1895	cctx_stacksize (int new_stacksize = 0)
1625	CODE:	1896	CODE:
1626	RETVAL = coro_stacksize;	1897	RETVAL = cctx_stacksize;
1627	if (new_stacksize)	1898	if (new_stacksize)
		1899	{
1628	coro_stacksize = new_stacksize;	1900	cctx_stacksize = new_stacksize;
		1901	++cctx_gen;
		1902	}
		1903	OUTPUT:
		1904	RETVAL
		1905
		1906	int
		1907	cctx_max_idle (int max_idle = 0)
		1908	CODE:
		1909	RETVAL = cctx_max_idle;
		1910	if (max_idle > 1)
		1911	cctx_max_idle = max_idle;
1629	OUTPUT:	1912	OUTPUT:
1630	RETVAL	1913	RETVAL
1631		1914
1632	int	1915	int
1633	cctx_count ()	1916	cctx_count ()
…		…
1657	call (Coro::State coro, SV *coderef)	1940	call (Coro::State coro, SV *coderef)
1658	ALIAS:	1941	ALIAS:
1659	eval = 1	1942	eval = 1
1660	CODE:	1943	CODE:
1661	{	1944	{
1662	if (coro->mainstack)	1945	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1663	{	1946	{
1664	struct coro temp;	1947	struct coro temp;
1665		1948
1666	if (!(coro->flags & CF_RUNNING))	1949	if (!(coro->flags & CF_RUNNING))
1667	{	1950	{
		1951	PUTBACK;
1668	save_perl (aTHX_ &temp);	1952	save_perl (aTHX_ &temp);
1669	load_perl (aTHX_ coro);	1953	load_perl (aTHX_ coro);
1670	}	1954	}
1671		1955
1672	{	1956	{
1673	dSP;	1957	dSP;
1674	ENTER;	1958	ENTER;
1675	SAVETMPS;	1959	SAVETMPS;
		1960	PUTBACK;
		1961	PUSHSTACK;
1676	PUSHMARK (SP);	1962	PUSHMARK (SP);
1677	PUTBACK;
1678		1963
1679	if (ix)	1964	if (ix)
1680	eval_sv (coderef, 0);	1965	eval_sv (coderef, 0);
1681	else	1966	else
1682	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1967	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1683		1968
		1969	POPSTACK;
1684	SPAGAIN;	1970	SPAGAIN;
1685	FREETMPS;	1971	FREETMPS;
1686	LEAVE;	1972	LEAVE;
1687	PUTBACK;	1973	PUTBACK;
1688	}	1974	}
1689		1975
1690	if (!(coro->flags & CF_RUNNING))	1976	if (!(coro->flags & CF_RUNNING))
1691	{	1977	{
1692	save_perl (aTHX_ coro);	1978	save_perl (aTHX_ coro);
1693	load_perl (aTHX_ &temp);	1979	load_perl (aTHX_ &temp);
		1980	SPAGAIN;
1694	}	1981	}
1695	}	1982	}
1696	}	1983	}
1697		1984
1698	SV *	1985	SV *
…		…
1710		1997
1711	void	1998	void
1712	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	1999	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1713		2000
1714	SV *	2001	SV *
1715	has_stack (Coro::State coro)	2002	has_cctx (Coro::State coro)
1716	PROTOTYPE: $	2003	PROTOTYPE: $
1717	CODE:	2004	CODE:
1718	RETVAL = boolSV (!!coro->cctx);	2005	RETVAL = boolSV (!!coro->cctx);
1719	OUTPUT:	2006	OUTPUT:
1720	RETVAL	2007	RETVAL
…		…
1739	case 1: RETVAL = coro->usecount; break;	2026	case 1: RETVAL = coro->usecount; break;
1740	}	2027	}
1741	OUTPUT:	2028	OUTPUT:
1742	RETVAL	2029	RETVAL
1743		2030
		2031	void
		2032	force_cctx ()
		2033	CODE:
		2034	struct coro *coro = SvSTATE (coro_current);
		2035	coro->cctx->idle_sp = 0;
		2036
		2037	void
		2038	swap_defsv (Coro::State self)
		2039	PROTOTYPE: $
		2040	ALIAS:
		2041	swap_defav = 1
		2042	CODE:
		2043	if (!self->slot)
		2044	croak ("cannot swap state with coroutine that has no saved state");
		2045	else
		2046	{
		2047	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2048	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2049
		2050	SV *tmp = *src; *src = *dst; *dst = tmp;
		2051	}
1744		2052
1745	MODULE = Coro::State PACKAGE = Coro	2053	MODULE = Coro::State PACKAGE = Coro
1746		2054
1747	BOOT:	2055	BOOT:
1748	{	2056	{
1749	int i;	2057	int i;
1750		2058
1751	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1752	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1753	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2059	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2060	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2061	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1754		2062
1755	coro_current = coro_get_sv ("Coro::current", FALSE);	2063	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1756	SvREADONLY_on (coro_current);	2064	SvREADONLY_on (coro_current);
1757		2065
1758	coro_stash = gv_stashpv ("Coro", TRUE);	2066	coro_stash = gv_stashpv ("Coro", TRUE);
1759		2067
1760	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2068	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1788	void	2096	void
1789	_set_current (SV *current)	2097	_set_current (SV *current)
1790	PROTOTYPE: $	2098	PROTOTYPE: $
1791	CODE:	2099	CODE:
1792	SvREFCNT_dec (SvRV (coro_current));	2100	SvREFCNT_dec (SvRV (coro_current));
1793	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2101	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2102
		2103	void
		2104	_set_readyhook (SV *hook)
		2105	PROTOTYPE: $
		2106	CODE:
		2107	LOCK;
		2108	SvREFCNT_dec (coro_readyhook);
		2109	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2110	UNLOCK;
1794		2111
1795	int	2112	int
1796	prio (Coro::State coro, int newprio = 0)	2113	prio (Coro::State coro, int newprio = 0)
1797	ALIAS:	2114	ALIAS:
1798	nice = 1	2115	nice = 1
…		…
1843	CODE:	2160	CODE:
1844	{	2161	{
1845	struct coro *coro = SvSTATE (coro_current);	2162	struct coro *coro = SvSTATE (coro_current);
1846	HV *hv = (HV *)SvRV (coro_current);	2163	HV *hv = (HV *)SvRV (coro_current);
1847	AV *defav = GvAV (PL_defgv);	2164	AV *defav = GvAV (PL_defgv);
1848	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);	2165	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1849	AV *invoke_av;	2166	AV *invoke_av;
1850	int i, len;	2167	int i, len;
1851		2168
1852	if (!invoke)	2169	if (!invoke)
		2170	{
		2171	SV *old = PL_diehook;
		2172	PL_diehook = 0;
		2173	SvREFCNT_dec (old);
1853	croak ("\3async_pool terminate\2\n");	2174	croak ("\3async_pool terminate\2\n");
		2175	}
1854		2176
1855	SvREFCNT_dec (coro->saved_deffh);	2177	SvREFCNT_dec (coro->saved_deffh);
1856	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2178	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1857		2179
1858	hv_store (hv, "desc", sizeof ("desc") - 1,	2180	hv_store (hv, "desc", sizeof ("desc") - 1,
1859	newSVpvn (strpair ("[async_pool]")), 0);	2181	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1860		2182
1861	invoke_av = (AV *)SvRV (invoke);	2183	invoke_av = (AV *)SvRV (invoke);
1862	len = av_len (invoke_av);	2184	len = av_len (invoke_av);
1863		2185
1864	sv_setsv (cb, AvARRAY (invoke_av)[0]);	2186	sv_setsv (cb, AvARRAY (invoke_av)[0]);
1865		2187
1866	if (len > 0)	2188	if (len > 0)
1867	{	2189	{
1868	av_fill (defav, len - 1);	2190	av_fill (defav, len - 1);
1869	for (i = 0; i < len; ++i)	2191	for (i = 0; i < len; ++i)
1870	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2192	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1871	}	2193	}
1872		2194
1873	SvREFCNT_dec (invoke);	2195	SvREFCNT_dec (invoke);
1874	}	2196	}
1875		2197
…		…
1884	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2206	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1885	coro->saved_deffh = 0;	2207	coro->saved_deffh = 0;
1886		2208
1887	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2209	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)
1888	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2210	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2211	{
		2212	SV *old = PL_diehook;
		2213	PL_diehook = 0;
		2214	SvREFCNT_dec (old);
1889	croak ("\3async_pool terminate\2\n");	2215	croak ("\3async_pool terminate\2\n");
		2216	}
1890		2217
1891	av_clear (GvAV (PL_defgv));	2218	av_clear (GvAV (PL_defgv));
1892	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),	2219	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1893	newSVpvn (strpair ("[async_pool idle]")), 0);	2220	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1894		2221
1895	coro->prio = 0;	2222	coro->prio = 0;
1896		2223
1897	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2224	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1898	api_trace (coro_current, 0);	2225	api_trace (coro_current, 0);
1899		2226
1900	av_push (av_async_pool, newSVsv (coro_current));	2227	av_push (av_async_pool, newSVsv (coro_current));
1901	}	2228	}
1902		2229
		2230	#if 0
		2231
		2232	void
		2233	_generator_call (...)
		2234	PROTOTYPE: @
		2235	PPCODE:
		2236	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2237	xxxx
		2238	abort ();
		2239
		2240	SV *
		2241	gensub (SV *sub, ...)
		2242	PROTOTYPE: &;@
		2243	CODE:
		2244	{
		2245	struct coro *coro;
		2246	MAGIC *mg;
		2247	CV *xcv;
		2248	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2249	int i;
		2250
		2251	CvGV (ncv) = CvGV (cv);
		2252	CvFILE (ncv) = CvFILE (cv);
		2253
		2254	Newz (0, coro, 1, struct coro);
		2255	coro->args = newAV ();
		2256	coro->flags = CF_NEW;
		2257
		2258	av_extend (coro->args, items - 1);
		2259	for (i = 1; i < items; i++)
		2260	av_push (coro->args, newSVsv (ST (i)));
		2261
		2262	CvISXSUB_on (ncv);
		2263	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2264
		2265	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2266
		2267	CvXSUB (ncv) = CvXSUB (xcv);
		2268	CvANON_on (ncv);
		2269
		2270	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2271	RETVAL = newRV_noinc ((SV *)ncv);
		2272	}
		2273	OUTPUT:
		2274	RETVAL
		2275
		2276	#endif
		2277
1903		2278
1904	MODULE = Coro::State PACKAGE = Coro::AIO	2279	MODULE = Coro::State PACKAGE = Coro::AIO
1905		2280
1906	SV *	2281	void
1907	_get_state ()	2282	_get_state (SV *self)
1908	CODE:	2283	PPCODE:
1909	{	2284	{
1910	struct io_state *data;	2285	AV *defav = GvAV (PL_defgv);
1911		2286	AV *av = newAV ();
		2287	int i;
1912	RETVAL = newSV (sizeof (struct io_state));	2288	SV *data_sv = newSV (sizeof (struct io_state));
1913	data = (struct io_state *)SvPVX (RETVAL);	2289	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1914	SvCUR_set (RETVAL, sizeof (struct io_state));	2290	SvCUR_set (data_sv, sizeof (struct io_state));
1915	SvPOK_only (RETVAL);	2291	SvPOK_only (data_sv);
1916		2292
1917	data->errorno = errno;	2293	data->errorno = errno;
1918	data->laststype = PL_laststype;	2294	data->laststype = PL_laststype;
1919	data->laststatval = PL_laststatval;	2295	data->laststatval = PL_laststatval;
1920	data->statcache = PL_statcache;	2296	data->statcache = PL_statcache;
		2297
		2298	av_extend (av, AvFILLp (defav) + 1 + 1);
		2299
		2300	for (i = 0; i <= AvFILLp (defav); ++i)
		2301	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2302
		2303	av_push (av, data_sv);
		2304
		2305	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2306
		2307	api_ready (self);
1921	}	2308	}
1922	OUTPUT:
1923	RETVAL
1924		2309
1925	void	2310	void
1926	_set_state (char *data_)	2311	_set_state (SV *state)
1927	PROTOTYPE: $	2312	PROTOTYPE: $
1928	CODE:	2313	PPCODE:
1929	{	2314	{
1930	struct io_state *data = (void *)data_;	2315	AV *av = (AV *)SvRV (state);
		2316	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2317	int i;
1931		2318
1932	errno = data->errorno;	2319	errno = data->errorno;
1933	PL_laststype = data->laststype;	2320	PL_laststype = data->laststype;
1934	PL_laststatval = data->laststatval;	2321	PL_laststatval = data->laststatval;
1935	PL_statcache = data->statcache;	2322	PL_statcache = data->statcache;
1936	}
1937		2323
		2324	EXTEND (SP, AvFILLp (av));
		2325	for (i = 0; i < AvFILLp (av); ++i)
		2326	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2327	}
		2328
		2329
		2330	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2331
		2332	BOOT:
		2333	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2334
		2335	SV *
		2336	_schedule (...)
		2337	PROTOTYPE: @
		2338	CODE:
		2339	{
		2340	static int incede;
		2341
		2342	api_cede_notself ();
		2343
		2344	++incede;
		2345	while (coro_nready >= incede && api_cede ())
		2346	;
		2347
		2348	sv_setsv (sv_activity, &PL_sv_undef);
		2349	if (coro_nready >= incede)
		2350	{
		2351	PUSHMARK (SP);
		2352	PUTBACK;
		2353	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2354	SPAGAIN;
		2355	}
		2356
		2357	--incede;
		2358	}
		2359
		2360
		2361	MODULE = Coro::State PACKAGE = PerlIO::cede
		2362
		2363	BOOT:
		2364	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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