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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 1.259 by root, Mon Nov 10 00:02:29 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 */
		186	static volatile char next_has_throw; /* speedup flag for next->throw check */
150		187
151	static GV *irsgv; /* $/ */	188	static GV *irsgv; /* $/ */
152	static GV *stdoutgv; /* *STDOUT */	189	static GV *stdoutgv; /* *STDOUT */
153	static SV *sv_diehook;	190	static SV *rv_diehook;
154	static SV *sv_warnhook;	191	static SV *rv_warnhook;
		192	static HV *hv_sig; /* %SIG */
155		193
156	/* async_pool helper stuff */	194	/* async_pool helper stuff */
157	static SV *sv_pool_rss;	195	static SV *sv_pool_rss;
158	static SV *sv_pool_size;	196	static SV *sv_pool_size;
159	static AV *av_async_pool;	197	static AV *av_async_pool;
		198
		199	/* Coro::AnyEvent */
		200	static SV *sv_activity;
160		201
161	static struct coro_cctx *cctx_first;	202	static struct coro_cctx *cctx_first;
162	static int cctx_count, cctx_idle;	203	static int cctx_count, cctx_idle;
163		204
164	enum {	205	enum {
…		…
182	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	223	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 */	224	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
184	JMPENV *top_env;	225	JMPENV *top_env;
185	coro_context cctx;	226	coro_context cctx;
186		227
		228	U32 gen;
187	#if CORO_USE_VALGRIND	229	#if CORO_USE_VALGRIND
188	int valgrind_id;	230	int valgrind_id;
189	#endif	231	#endif
190	unsigned char flags;	232	unsigned char flags;
191	} coro_cctx;	233	} coro_cctx;
…		…
217		259
218	/* process data */	260	/* process data */
219	AV *mainstack;	261	AV *mainstack;
220	perl_slots *slot; /* basically the saved sp */	262	perl_slots *slot; /* basically the saved sp */
221		263
222	/* data associated with this coroutine (initial args) */	264	AV *args; /* data associated with this coroutine (initial args) */
223	AV *args;	265	int refcnt; /* coroutines are refcounted, yes */
224	int refcnt;
225	int flags; /* CF_ flags */	266	int flags; /* CF_ flags */
		267	HV *hv; /* the perl hash associated with this coro, if any */
226		268
227	/* statistics */	269	/* statistics */
228	int usecount; /* number of transfers to this coro */	270	int usecount; /* number of transfers to this coro */
229		271
230	/* coro process data */	272	/* coro process data */
231	int prio;	273	int prio;
232	SV *throw;	274	SV *throw; /* exception to be thrown */
233		275
234	/* async_pool */	276	/* async_pool */
235	SV *saved_deffh;	277	SV *saved_deffh;
236		278
237	/* linked list */	279	/* linked list */
238	struct coro *next, *prev;	280	struct coro *next, *prev;
239	HV *hv; /* the perl hash associated with this coro, if any */
240	};	281	};
241		282
242	typedef struct coro *Coro__State;	283	typedef struct coro *Coro__State;
243	typedef struct coro *Coro__State_or_hashref;	284	typedef struct coro *Coro__State_or_hashref;
244		285
…		…
251	#define PRIO_IDLE -3	292	#define PRIO_IDLE -3
252	#define PRIO_MIN -4	293	#define PRIO_MIN -4
253		294
254	/* for Coro.pm */	295	/* for Coro.pm */
255	static SV *coro_current;	296	static SV *coro_current;
		297	static SV *coro_readyhook;
256	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	298	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
257	static int coro_nready;	299	static int coro_nready;
258	static struct coro *coro_first;	300	static struct coro *coro_first;
259		301
260	/** lowlevel stuff **********************************************************/	302	/** lowlevel stuff **********************************************************/
261		303
262	static SV *	304	static SV *
263	coro_get_sv (const char *name, int create)	305	coro_get_sv (pTHX_ const char *name, int create)
264	{	306	{
265	#if PERL_VERSION_ATLEAST (5,9,0)	307	#if PERL_VERSION_ATLEAST (5,10,0)
266	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	308	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
267	get_sv (name, create);	309	get_sv (name, create);
268	#endif	310	#endif
269	return get_sv (name, create);	311	return get_sv (name, create);
270	}	312	}
271		313
272	static SV *	314	static AV *
273	coro_get_av (const char *name, int create)	315	coro_get_av (pTHX_ const char *name, int create)
274	{	316	{
275	#if PERL_VERSION_ATLEAST (5,9,0)	317	#if PERL_VERSION_ATLEAST (5,10,0)
276	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	318	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
277	get_av (name, create);	319	get_av (name, create);
278	#endif	320	#endif
279	return get_av (name, create);	321	return get_av (name, create);
280	}	322	}
281		323
		324	static HV *
		325	coro_get_hv (pTHX_ const char *name, int create)
		326	{
		327	#if PERL_VERSION_ATLEAST (5,10,0)
		328	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		329	get_hv (name, create);
		330	#endif
		331	return get_hv (name, create);
		332	}
		333
282	static AV *	334	static AV *
283	coro_clone_padlist (pTHX_ CV *cv)	335	coro_clone_padlist (pTHX_ CV *cv)
284	{	336	{
285	AV *padlist = CvPADLIST (cv);	337	AV *padlist = CvPADLIST (cv);
286	AV *newpadlist, *newpad;	338	AV *newpadlist, *newpad;
287		339
288	newpadlist = newAV ();	340	newpadlist = newAV ();
289	AvREAL_off (newpadlist);	341	AvREAL_off (newpadlist);
290	#if PERL_VERSION_ATLEAST (5,9,0)	342	#if PERL_VERSION_ATLEAST (5,10,0)
291	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	343	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
292	#else	344	#else
293	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	345	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
294	#endif	346	#endif
295	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	347	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
296	--AvFILLp (padlist);	348	--AvFILLp (padlist);
297		349
298	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	350	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
299	av_store (newpadlist, 1, (SV *)newpad);	351	av_store (newpadlist, 1, (SV *)newpad);
300		352
301	return newpadlist;	353	return newpadlist;
302	}	354	}
303		355
…		…
333		385
334	/* casting is fun. */	386	/* casting is fun. */
335	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	387	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
336	free_padlist (aTHX_ padlist);	388	free_padlist (aTHX_ padlist);
337		389
338	SvREFCNT_dec (av);	390	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
339		391
340	return 0;	392	return 0;
341	}	393	}
342		394
343	#define PERL_MAGIC_coro PERL_MAGIC_ext	395	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		396	#define CORO_MAGIC_type_state PERL_MAGIC_ext
344		397
345	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	398	static MGVTBL coro_cv_vtbl = {
		399	0, 0, 0, 0,
		400	coro_cv_free
		401	};
346		402
347	#define CORO_MAGIC(cv) \	403	#define CORO_MAGIC(sv, type) \
348	SvMAGIC (cv) \	404	SvMAGIC (sv) \
349	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	405	? SvMAGIC (sv)->mg_type == type \
350	? SvMAGIC (cv) \	406	? SvMAGIC (sv) \
351	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	407	: mg_find (sv, type) \
352	: 0	408	: 0
		409
		410	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		411	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
353		412
354	static struct coro *	413	static struct coro *
355	SvSTATE_ (pTHX_ SV *coro)	414	SvSTATE_ (pTHX_ SV *coro)
356	{	415	{
357	HV *stash;	416	HV *stash;
…		…
369	/* very slow, but rare, check */	428	/* very slow, but rare, check */
370	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	429	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
371	croak ("Coro::State object required");	430	croak ("Coro::State object required");
372	}	431	}
373		432
374	mg = CORO_MAGIC (coro);	433	mg = CORO_MAGIC_state (coro);
375	return (struct coro *)mg->mg_ptr;	434	return (struct coro *)mg->mg_ptr;
376	}	435	}
377		436
378	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	437	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
379		438
380	/* the next two functions merely cache the padlists */	439	/* the next two functions merely cache the padlists */
381	static void	440	static void
382	get_padlist (pTHX_ CV *cv)	441	get_padlist (pTHX_ CV *cv)
383	{	442	{
384	MAGIC *mg = CORO_MAGIC (cv);	443	MAGIC *mg = CORO_MAGIC_cv (cv);
385	AV *av;	444	AV *av;
386		445
387	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	446	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
388	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	447	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
389	else	448	else
390	{	449	{
391	#if CORO_PREFER_PERL_FUNCTIONS	450	#if CORO_PREFER_PERL_FUNCTIONS
392	/* this is probably cleaner, but also slower? */	451	/* this is probably cleaner? but also slower! */
		452	/* in practise, it seems to be less stable */
393	CV *cp = Perl_cv_clone (cv);	453	CV *cp = Perl_cv_clone (cv);
394	CvPADLIST (cv) = CvPADLIST (cp);	454	CvPADLIST (cv) = CvPADLIST (cp);
395	CvPADLIST (cp) = 0;	455	CvPADLIST (cp) = 0;
396	SvREFCNT_dec (cp);	456	SvREFCNT_dec (cp);
397	#else	457	#else
…		…
401	}	461	}
402		462
403	static void	463	static void
404	put_padlist (pTHX_ CV *cv)	464	put_padlist (pTHX_ CV *cv)
405	{	465	{
406	MAGIC *mg = CORO_MAGIC (cv);	466	MAGIC *mg = CORO_MAGIC_cv (cv);
407	AV *av;	467	AV *av;
408		468
409	if (expect_false (!mg))	469	if (expect_false (!mg))
410	{	470	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		471
417	av = (AV *)mg->mg_obj;	472	av = (AV *)mg->mg_obj;
418		473
419	if (expect_false (AvFILLp (av) >= AvMAX (av)))	474	if (expect_false (AvFILLp (av) >= AvMAX (av)))
420	av_extend (av, AvMAX (av) + 1);	475	av_extend (av, AvMAX (av) + 1);
…		…
486		541
487	if (expect_true (CvDEPTH (cv)))	542	if (expect_true (CvDEPTH (cv)))
488	{	543	{
489	EXTEND (SP, 3);	544	EXTEND (SP, 3);
490	PUSHs ((SV *)CvPADLIST (cv));	545	PUSHs ((SV *)CvPADLIST (cv));
491	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	546	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
492	PUSHs ((SV *)cv);	547	PUSHs ((SV *)cv);
493		548
494	CvDEPTH (cv) = 0;	549	CvDEPTH (cv) = 0;
495	get_padlist (aTHX_ cv);	550	get_padlist (aTHX_ cv);
496	}	551	}
…		…
507		562
508	PUTBACK;	563	PUTBACK;
509	}	564	}
510		565
511	/* allocate some space on the context stack for our purposes */	566	/* allocate some space on the context stack for our purposes */
		567	/* we manually unroll here, as usually 2 slots is enough */
		568	if (SLOT_COUNT >= 1) CXINC;
		569	if (SLOT_COUNT >= 2) CXINC;
		570	if (SLOT_COUNT >= 3) CXINC;
512	{	571	{
513	/* we manually unroll here, as usually 2 slots is enough */
514	int i;	572	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)	573	for (i = 3; i < SLOT_COUNT; ++i)
519	CXINC;	574	CXINC;
520
521	cxstack_ix -= SLOT_COUNT; /* undo allocation */
522	}	575	}
		576	cxstack_ix -= SLOT_COUNT; /* undo allocation */
523		577
524	c->mainstack = PL_mainstack;	578	c->mainstack = PL_mainstack;
525		579
526	{	580	{
527	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	581	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
…		…
577		631
578	New(54,PL_savestack,24,ANY);	632	New(54,PL_savestack,24,ANY);
579	PL_savestack_ix = 0;	633	PL_savestack_ix = 0;
580	PL_savestack_max = 24;	634	PL_savestack_max = 24;
581		635
582	#if !PERL_VERSION_ATLEAST (5,9,0)	636	#if !PERL_VERSION_ATLEAST (5,10,0)
583	New(54,PL_retstack,4,OP*);	637	New(54,PL_retstack,4,OP*);
584	PL_retstack_ix = 0;	638	PL_retstack_ix = 0;
585	PL_retstack_max = 4;	639	PL_retstack_max = 4;
586	#endif	640	#endif
587	}	641	}
…		…
589		643
590	/*	644	/*
591	* destroy the stacks, the callchain etc...	645	* destroy the stacks, the callchain etc...
592	*/	646	*/
593	static void	647	static void
594	coro_destroy_stacks (pTHX)	648	coro_destruct_stacks (pTHX)
595	{	649	{
596	while (PL_curstackinfo->si_next)	650	while (PL_curstackinfo->si_next)
597	PL_curstackinfo = PL_curstackinfo->si_next;	651	PL_curstackinfo = PL_curstackinfo->si_next;
598		652
599	while (PL_curstackinfo)	653	while (PL_curstackinfo)
…		…
610		664
611	Safefree (PL_tmps_stack);	665	Safefree (PL_tmps_stack);
612	Safefree (PL_markstack);	666	Safefree (PL_markstack);
613	Safefree (PL_scopestack);	667	Safefree (PL_scopestack);
614	Safefree (PL_savestack);	668	Safefree (PL_savestack);
615	#if !PERL_VERSION_ATLEAST (5,9,0)	669	#if !PERL_VERSION_ATLEAST (5,10,0)
616	Safefree (PL_retstack);	670	Safefree (PL_retstack);
617	#endif	671	#endif
618	}	672	}
619		673
620	static size_t	674	static size_t
…		…
636	#undef VAR	690	#undef VAR
637	}	691	}
638	else	692	else
639	slot = coro->slot;	693	slot = coro->slot;
640		694
		695	if (slot)
		696	{
641	rss += sizeof (slot->curstackinfo);	697	rss += sizeof (slot->curstackinfo);
642	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	698	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
643	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	699	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
644	rss += slot->tmps_max * sizeof (SV *);	700	rss += slot->tmps_max * sizeof (SV *);
645	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	701	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
646	rss += slot->scopestack_max * sizeof (I32);	702	rss += slot->scopestack_max * sizeof (I32);
647	rss += slot->savestack_max * sizeof (ANY);	703	rss += slot->savestack_max * sizeof (ANY);
648		704
649	#if !PERL_VERSION_ATLEAST (5,9,0)	705	#if !PERL_VERSION_ATLEAST (5,10,0)
650	rss += slot->retstack_max * sizeof (OP *);	706	rss += slot->retstack_max * sizeof (OP *);
651	#endif	707	#endif
		708	}
652	}	709	}
653		710
654	return rss;	711	return rss;
655	}	712	}
656		713
657	/** coroutine stack handling ************************************************/	714	/** coroutine stack handling ************************************************/
		715
		716	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		717	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		718	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		719
		720	/* apparently < 5.8.8 */
		721	#ifndef MgPV_nolen_const
		722	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		723	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		724	(const char*)(mg)->mg_ptr)
		725	#endif
		726
		727	/*
		728	* This overrides the default magic get method of %SIG elements.
		729	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		730	* and instead of tryign to save and restore the hash elements, we just provide
		731	* readback here.
		732	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		733	* not expecting this to actually change the hook. This is a potential problem
		734	* when a schedule happens then, but we ignore this.
		735	*/
		736	static int
		737	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		738	{
		739	const char *s = MgPV_nolen_const (mg);
		740
		741	if (*s == '_')
		742	{
		743	SV **svp = 0;
		744
		745	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		746	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		747
		748	if (svp)
		749	{
		750	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		751	return 0;
		752	}
		753	}
		754
		755	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		756	}
		757
		758	static int
		759	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		760	{
		761	const char *s = MgPV_nolen_const (mg);
		762
		763	if (*s == '_')
		764	{
		765	SV **svp = 0;
		766
		767	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		768	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		769
		770	if (svp)
		771	{
		772	SV *old = *svp;
		773	*svp = 0;
		774	SvREFCNT_dec (old);
		775	return 0;
		776	}
		777	}
		778
		779	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		780	}
		781
		782	static int
		783	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		784	{
		785	const char *s = MgPV_nolen_const (mg);
		786
		787	if (*s == '_')
		788	{
		789	SV **svp = 0;
		790
		791	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		792	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		793
		794	if (svp)
		795	{
		796	SV *old = *svp;
		797	*svp = newSVsv (sv);
		798	SvREFCNT_dec (old);
		799	return 0;
		800	}
		801	}
		802
		803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		804	}
658		805
659	static void	806	static void
660	coro_setup (pTHX_ struct coro *coro)	807	coro_setup (pTHX_ struct coro *coro)
661	{	808	{
662	/*	809	/*
…		…
671	PL_curpm = 0;	818	PL_curpm = 0;
672	PL_curpad = 0;	819	PL_curpad = 0;
673	PL_localizing = 0;	820	PL_localizing = 0;
674	PL_dirty = 0;	821	PL_dirty = 0;
675	PL_restartop = 0;	822	PL_restartop = 0;
676	PL_diehook = SvREFCNT_inc (sv_diehook);	823	#if PERL_VERSION_ATLEAST (5,10,0)
677	PL_warnhook = SvREFCNT_inc (sv_warnhook);	824	PL_parser = 0;
		825	#endif
		826
		827	/* recreate the die/warn hooks */
		828	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		829	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
678		830
679	GvSV (PL_defgv) = newSV (0);	831	GvSV (PL_defgv) = newSV (0);
680	GvAV (PL_defgv) = coro->args; coro->args = 0;	832	GvAV (PL_defgv) = coro->args; coro->args = 0;
681	GvSV (PL_errgv) = newSV (0);	833	GvSV (PL_errgv) = newSV (0);
682	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	834	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
683	PL_rs = newSVsv (GvSV (irsgv));	835	PL_rs = newSVsv (GvSV (irsgv));
684	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	836	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
685		837
686	{	838	{
687	dSP;	839	dSP;
688	LOGOP myop;	840	LOGOP myop;
689		841
…		…
697	PL_op = (OP *)&myop;	849	PL_op = (OP *)&myop;
698	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	850	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
699	SPAGAIN;	851	SPAGAIN;
700	}	852	}
701		853
702	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */	854	/* this newly created coroutine might be run on an existing cctx which most
		855	* likely was suspended in set_stacklevel, called from entersub.
		856	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		857	* so we ENTER here for symmetry
		858	*/
		859	ENTER;
703	}	860	}
704		861
705	static void	862	static void
706	coro_destroy (pTHX_ struct coro *coro)	863	coro_destruct (pTHX_ struct coro *coro)
707	{	864	{
708	if (!IN_DESTRUCT)	865	if (!IN_DESTRUCT)
709	{	866	{
710	/* restore all saved variables and stuff */	867	/* restore all saved variables and stuff */
711	LEAVE_SCOPE (0);	868	LEAVE_SCOPE (0);
…		…
733	SvREFCNT_dec (PL_warnhook);	890	SvREFCNT_dec (PL_warnhook);
734		891
735	SvREFCNT_dec (coro->saved_deffh);	892	SvREFCNT_dec (coro->saved_deffh);
736	SvREFCNT_dec (coro->throw);	893	SvREFCNT_dec (coro->throw);
737		894
738	coro_destroy_stacks (aTHX);	895	coro_destruct_stacks (aTHX);
739	}	896	}
740		897
741	static void	898	static void
742	free_coro_mortal (pTHX)	899	free_coro_mortal (pTHX)
743	{	900	{
…		…
780	: cx->blk_gimme == G_SCALAR ? bot + 1	937	: cx->blk_gimme == G_SCALAR ? bot + 1
781	: bot;	938	: bot;
782		939
783	av_extend (av, top - bot);	940	av_extend (av, top - bot);
784	while (bot < top)	941	while (bot < top)
785	av_push (av, SvREFCNT_inc (*bot++));	942	av_push (av, SvREFCNT_inc_NN (*bot++));
786		943
787	PL_runops = RUNOPS_DEFAULT;	944	PL_runops = RUNOPS_DEFAULT;
788	ENTER;	945	ENTER;
789	SAVETMPS;	946	SAVETMPS;
790	EXTEND (SP, 3);	947	EXTEND (SP, 3);
…		…
828	SAVETMPS;	985	SAVETMPS;
829	EXTEND (SP, 3);	986	EXTEND (SP, 3);
830	PUSHMARK (SP);	987	PUSHMARK (SP);
831	PUSHs (&PL_sv_yes);	988	PUSHs (&PL_sv_yes);
832	PUSHs (fullname);	989	PUSHs (fullname);
833	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	990	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
834	PUTBACK;	991	PUTBACK;
835	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	992	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);	993	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
837	SPAGAIN;	994	SPAGAIN;
838	FREETMPS;	995	FREETMPS;
…		…
873	}	1030	}
874		1031
875	/* inject a fake call to Coro::State::_cctx_init into the execution */	1032	/* 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 */	1033	/* _cctx_init should be careful, as it could be called at almost any time */
877	/* during execution of a perl program */	1034	/* during execution of a perl program */
		1035	/* also initialises PL_top_env */
878	static void NOINLINE	1036	static void NOINLINE
879	prepare_cctx (pTHX_ coro_cctx *cctx)	1037	cctx_prepare (pTHX_ coro_cctx *cctx)
880	{	1038	{
881	dSP;	1039	dSP;
882	LOGOP myop;	1040	LOGOP myop;
883		1041
884	PL_top_env = &PL_start_env;	1042	PL_top_env = &PL_start_env;
…		…
898	PL_op = (OP *)&myop;	1056	PL_op = (OP *)&myop;
899	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1057	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
900	SPAGAIN;	1058	SPAGAIN;
901	}	1059	}
902		1060
		1061	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
		1062	static void
		1063	transfer_tail (void)
		1064	{
		1065	UNLOCK;
		1066
		1067	if (expect_false (next_has_throw))
		1068	{
		1069	struct coro *coro = SvSTATE (coro_current);
		1070
		1071	if (coro->throw)
		1072	{
		1073	SV *exception = coro->throw;
		1074	coro->throw = 0;
		1075	sv_setsv (ERRSV, exception);
		1076	croak (0);
		1077	}
		1078	}
		1079	}
		1080
903	/*	1081	/*
904	* this is a _very_ stripped down perl interpreter ;)	1082	* this is a _very_ stripped down perl interpreter ;)
905	*/	1083	*/
906	static void	1084	static void
907	coro_run (void *arg)	1085	cctx_run (void *arg)
908	{	1086	{
		1087	#ifdef USE_ITHREADS
		1088	# if CORO_PTHREAD
		1089	PERL_SET_CONTEXT (coro_thx);
		1090	# endif
		1091	#endif
		1092	{
909	dTHX;	1093	dTHX;
910		1094
911	/* coro_run is the alternative tail of transfer(), so unlock here. */
912	UNLOCK;
913
914	/* we now skip the entersub that lead to transfer() */	1095	/* we now skip the entersub that lead to transfer () */
915	PL_op = PL_op->op_next;	1096	PL_op = PL_op->op_next;
916		1097
917	/* inject a fake subroutine call to cctx_init */	1098	/* inject a fake subroutine call to cctx_init */
918	prepare_cctx (aTHX_ (coro_cctx *)arg);	1099	cctx_prepare (aTHX_ (coro_cctx *)arg);
919		1100
		1101	/* cctx_run is the alternative tail of transfer () */
		1102	transfer_tail ();
		1103
920	/* somebody or something will hit me for both perl_run and PL_restartop */	1104	/* somebody or something will hit me for both perl_run and PL_restartop */
921	PL_restartop = PL_op;	1105	PL_restartop = PL_op;
922	perl_run (PL_curinterp);	1106	perl_run (PL_curinterp);
923		1107
924	/*	1108	/*
925	* If perl-run returns we assume exit() was being called or the coro	1109	* 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)	1110	* 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	1111	* 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"	1112	* bootstrap-time "top" top_env, as we cannot restore the "main"
929	* coroutine as Coro has no such concept	1113	* coroutine as Coro has no such concept
930	*/	1114	*/
931	PL_top_env = main_top_env;	1115	PL_top_env = main_top_env;
932	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1116	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1117	}
933	}	1118	}
934		1119
935	static coro_cctx *	1120	static coro_cctx *
936	cctx_new ()	1121	cctx_new ()
937	{	1122	{
938	coro_cctx *cctx;	1123	coro_cctx *cctx;
		1124
		1125	++cctx_count;
		1126	New (0, cctx, 1, coro_cctx);
		1127
		1128	cctx->gen = cctx_gen;
		1129	cctx->flags = 0;
		1130	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */
		1131
		1132	return cctx;
		1133	}
		1134
		1135	/* create a new cctx only suitable as source */
		1136	static coro_cctx *
		1137	cctx_new_empty ()
		1138	{
		1139	coro_cctx *cctx = cctx_new ();
		1140
		1141	cctx->sptr = 0;
		1142	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1143
		1144	return cctx;
		1145	}
		1146
		1147	/* create a new cctx suitable as destination/running a perl interpreter */
		1148	static coro_cctx *
		1149	cctx_new_run ()
		1150	{
		1151	coro_cctx *cctx = cctx_new ();
939	void *stack_start;	1152	void *stack_start;
940	size_t stack_size;	1153	size_t stack_size;
941		1154
942	++cctx_count;
943
944	Newz (0, cctx, 1, coro_cctx);
945
946	#if HAVE_MMAP	1155	#if HAVE_MMAP
947
948	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1156	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
949	/* mmap supposedly does allocate-on-write for us */	1157	/* 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);	1158	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
951		1159
952	if (cctx->sptr != (void *)-1)	1160	if (cctx->sptr != (void *)-1)
953	{	1161	{
…		…
959	cctx->flags |= CC_MAPPED;	1167	cctx->flags |= CC_MAPPED;
960	}	1168	}
961	else	1169	else
962	#endif	1170	#endif
963	{	1171	{
964	cctx->ssize = coro_stacksize * (long)sizeof (long);	1172	cctx->ssize = cctx_stacksize * (long)sizeof (long);
965	New (0, cctx->sptr, coro_stacksize, long);	1173	New (0, cctx->sptr, cctx_stacksize, long);
966		1174
967	if (!cctx->sptr)	1175	if (!cctx->sptr)
968	{	1176	{
969	perror ("FATAL: unable to allocate stack for coroutine");	1177	perror ("FATAL: unable to allocate stack for coroutine");
970	_exit (EXIT_FAILURE);	1178	_exit (EXIT_FAILURE);
…		…
973	stack_start = cctx->sptr;	1181	stack_start = cctx->sptr;
974	stack_size = cctx->ssize;	1182	stack_size = cctx->ssize;
975	}	1183	}
976		1184
977	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1185	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
978	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1186	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
979		1187
980	return cctx;	1188	return cctx;
981	}	1189	}
982		1190
983	static void	1191	static void
…		…
985	{	1193	{
986	if (!cctx)	1194	if (!cctx)
987	return;	1195	return;
988		1196
989	--cctx_count;	1197	--cctx_count;
		1198	coro_destroy (&cctx->cctx);
990		1199
		1200	/* coro_transfer creates new, empty cctx's */
		1201	if (cctx->sptr)
		1202	{
991	#if CORO_USE_VALGRIND	1203	#if CORO_USE_VALGRIND
992	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1204	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
993	#endif	1205	#endif
994		1206
995	#if HAVE_MMAP	1207	#if HAVE_MMAP
996	if (cctx->flags & CC_MAPPED)	1208	if (cctx->flags & CC_MAPPED)
997	munmap (cctx->sptr, cctx->ssize);	1209	munmap (cctx->sptr, cctx->ssize);
998	else	1210	else
999	#endif	1211	#endif
1000	Safefree (cctx->sptr);	1212	Safefree (cctx->sptr);
		1213	}
1001		1214
1002	Safefree (cctx);	1215	Safefree (cctx);
1003	}	1216	}
1004		1217
1005	/* wether this cctx should be destructed */	1218	/* wether this cctx should be destructed */
1006	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1219	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1007		1220
1008	static coro_cctx *	1221	static coro_cctx *
1009	cctx_get (pTHX)	1222	cctx_get (pTHX)
1010	{	1223	{
1011	while (expect_true (cctx_first))	1224	while (expect_true (cctx_first))
…		…
1018	return cctx;	1231	return cctx;
1019		1232
1020	cctx_destroy (cctx);	1233	cctx_destroy (cctx);
1021	}	1234	}
1022		1235
1023	return cctx_new ();	1236	return cctx_new_run ();
1024	}	1237	}
1025		1238
1026	static void	1239	static void
1027	cctx_put (coro_cctx *cctx)	1240	cctx_put (coro_cctx *cctx)
1028	{	1241	{
		1242	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1243
1029	/* free another cctx if overlimit */	1244	/* free another cctx if overlimit */
1030	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1245	if (expect_false (cctx_idle >= cctx_max_idle))
1031	{	1246	{
1032	coro_cctx *first = cctx_first;	1247	coro_cctx *first = cctx_first;
1033	cctx_first = first->next;	1248	cctx_first = first->next;
1034	--cctx_idle;	1249	--cctx_idle;
1035		1250
…		…
1055	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1270	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1056		1271
1057	if (expect_false (next->flags & CF_DESTROYED))	1272	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");	1273	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1059		1274
1060	if (
1061	#if PERL_VERSION_ATLEAST (5,9,0)	1275	#if !PERL_VERSION_ATLEAST (5,10,0)
1062	expect_false (PL_parser)
1063	#else
1064	expect_false (PL_lex_state != LEX_NOTPARSING)	1276	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1065	#endif
1066	)
1067	croak ("Coro::State::transfer called while parsing, but this is not supported");	1277	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1278	#endif
1068	}	1279	}
1069	}	1280	}
1070		1281
1071	/* always use the TRANSFER macro */	1282	/* always use the TRANSFER macro */
1072	static void NOINLINE	1283	static void NOINLINE
1073	transfer (pTHX_ struct coro *prev, struct coro *next)	1284	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1074	{	1285	{
1075	dSTACKLEVEL;	1286	dSTACKLEVEL;
1076		1287
1077	/* sometimes transfer is only called to set idle_sp */	1288	/* sometimes transfer is only called to set idle_sp */
1078	if (expect_false (!next))	1289	if (expect_false (!next))
…		…
1084	{	1295	{
1085	coro_cctx *prev__cctx;	1296	coro_cctx *prev__cctx;
1086		1297
1087	if (expect_false (prev->flags & CF_NEW))	1298	if (expect_false (prev->flags & CF_NEW))
1088	{	1299	{
1089	/* create a new empty context */	1300	/* create a new empty/source context */
1090	Newz (0, prev->cctx, 1, coro_cctx);	1301	prev->cctx = cctx_new_empty ();
1091	prev->flags &= ~CF_NEW;	1302	prev->flags &= ~CF_NEW;
1092	prev->flags |= CF_RUNNING;	1303	prev->flags |= CF_RUNNING;
1093	}	1304	}
1094		1305
1095	prev->flags &= ~CF_RUNNING;	1306	prev->flags &= ~CF_RUNNING;
1096	next->flags |= CF_RUNNING;	1307	next->flags |= CF_RUNNING;
1097		1308
1098	LOCK;	1309	LOCK;
		1310
		1311	/* first get rid of the old state */
		1312	save_perl (aTHX_ prev);
1099		1313
1100	if (expect_false (next->flags & CF_NEW))	1314	if (expect_false (next->flags & CF_NEW))
1101	{	1315	{
1102	/* need to start coroutine */	1316	/* need to start coroutine */
1103	next->flags &= ~CF_NEW;	1317	next->flags &= ~CF_NEW;
1104	/* first get rid of the old state */
1105	save_perl (aTHX_ prev);
1106	/* setup coroutine call */	1318	/* setup coroutine call */
1107	coro_setup (aTHX_ next);	1319	coro_setup (aTHX_ next);
1108	}	1320	}
1109	else	1321	else
1110	{
1111	/* coroutine already started */
1112	save_perl (aTHX_ prev);
1113	load_perl (aTHX_ next);	1322	load_perl (aTHX_ next);
1114	}
1115		1323
1116	prev__cctx = prev->cctx;	1324	prev__cctx = prev->cctx;
1117		1325
		1326	if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
		1327
1118	/* possibly "free" the cctx */	1328	/* possibly "free" the cctx */
1119	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1329	if (expect_true (
		1330	prev__cctx->idle_sp == STACKLEVEL
		1331	&& !(prev__cctx->flags & CC_TRACE)
		1332	&& !force_cctx
		1333	))
1120	{	1334	{
1121	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1335	/* 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));	1336	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1123		1337
1124	prev->cctx = 0;	1338	prev->cctx = 0;
1125		1339
1126	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1340	/* 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 */	1341	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1128	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1342	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1343	if (!next->cctx)
1129	next->cctx = cctx_get (aTHX);	1344	next->cctx = cctx_get (aTHX);
1130		1345
1131	cctx_put (prev__cctx);	1346	cctx_put (prev__cctx);
1132	}	1347	}
1133		1348
1134	++next->usecount;	1349	++next->usecount;
1135		1350
1136	if (expect_true (!next->cctx))	1351	if (expect_true (!next->cctx))
1137	next->cctx = cctx_get (aTHX);	1352	next->cctx = cctx_get (aTHX);
		1353
		1354	next_has_throw = !!next->throw;
1138		1355
1139	if (expect_false (prev__cctx != next->cctx))	1356	if (expect_false (prev__cctx != next->cctx))
1140	{	1357	{
1141	prev__cctx->top_env = PL_top_env;	1358	prev__cctx->top_env = PL_top_env;
1142	PL_top_env = next->cctx->top_env;	1359	PL_top_env = next->cctx->top_env;
…		…
1144	}	1361	}
1145		1362
1146	free_coro_mortal (aTHX);	1363	free_coro_mortal (aTHX);
1147	UNLOCK;	1364	UNLOCK;
1148		1365
1149	if (expect_false (prev->throw || next->throw))	1366	transfer_tail ();
1150	{
1151	struct coro *coro = SvSTATE (coro_current);
1152
1153	if (coro->throw)
1154	{
1155	SV *exception = coro->throw;
1156	coro->throw = 0;
1157	sv_setsv (ERRSV, exception);
1158	croak (0);
1159	}
1160	}
1161	}	1367	}
1162	}	1368	}
1163		1369
1164	struct transfer_args	1370	struct transfer_args
1165	{	1371	{
1166	struct coro *prev, *next;	1372	struct coro *prev, *next;
1167	};	1373	};
1168		1374
1169	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1375	#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)	1376	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1171		1377
1172	/** high level stuff ********************************************************/	1378	/** high level stuff ********************************************************/
1173		1379
1174	static int	1380	static int
…		…
1198	croak ("FATAL: tried to destroy currently running coroutine");	1404	croak ("FATAL: tried to destroy currently running coroutine");
1199		1405
1200	save_perl (aTHX_ &temp);	1406	save_perl (aTHX_ &temp);
1201	load_perl (aTHX_ coro);	1407	load_perl (aTHX_ coro);
1202		1408
1203	coro_destroy (aTHX_ coro);	1409	coro_destruct (aTHX_ coro);
1204		1410
1205	load_perl (aTHX_ &temp);	1411	load_perl (aTHX_ &temp);
1206		1412
1207	coro->slot = 0;	1413	coro->slot = 0;
1208	}	1414	}
…		…
1268	{	1474	{
1269	dTHX;	1475	dTHX;
1270	struct transfer_args ta;	1476	struct transfer_args ta;
1271		1477
1272	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1478	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1273	TRANSFER (ta);	1479	TRANSFER (ta, 1);
1274	}	1480	}
1275		1481
1276	/** Coro ********************************************************************/	1482	/** Coro ********************************************************************/
1277		1483
1278	static void	1484	static void
…		…
1280	{	1486	{
1281	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1487	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1282	}	1488	}
1283		1489
1284	static SV *	1490	static SV *
1285	coro_deq (pTHX_ int min_prio)	1491	coro_deq (pTHX)
1286	{	1492	{
1287	int prio = PRIO_MAX - PRIO_MIN;	1493	int prio;
1288		1494
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; )	1495	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1294	if (AvFILLp (coro_ready [prio]) >= 0)	1496	if (AvFILLp (coro_ready [prio]) >= 0)
1295	return av_shift (coro_ready [prio]);	1497	return av_shift (coro_ready [prio]);
1296		1498
1297	return 0;	1499	return 0;
1298	}	1500	}
…		…
1300	static int	1502	static int
1301	api_ready (SV *coro_sv)	1503	api_ready (SV *coro_sv)
1302	{	1504	{
1303	dTHX;	1505	dTHX;
1304	struct coro *coro;	1506	struct coro *coro;
		1507	SV *sv_hook;
		1508	void (*xs_hook)(void);
1305		1509
1306	if (SvROK (coro_sv))	1510	if (SvROK (coro_sv))
1307	coro_sv = SvRV (coro_sv);	1511	coro_sv = SvRV (coro_sv);
1308		1512
1309	coro = SvSTATE (coro_sv);	1513	coro = SvSTATE (coro_sv);
…		…
1312	return 0;	1516	return 0;
1313		1517
1314	coro->flags |= CF_READY;	1518	coro->flags |= CF_READY;
1315		1519
1316	LOCK;	1520	LOCK;
		1521
		1522	sv_hook = coro_nready ? 0 : coro_readyhook;
		1523	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1524
1317	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1525	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1318	++coro_nready;	1526	++coro_nready;
		1527
1319	UNLOCK;	1528	UNLOCK;
		1529
		1530	if (sv_hook)
		1531	{
		1532	dSP;
		1533
		1534	ENTER;
		1535	SAVETMPS;
		1536
		1537	PUSHMARK (SP);
		1538	PUTBACK;
		1539	call_sv (sv_hook, G_DISCARD);
		1540	SPAGAIN;
		1541
		1542	FREETMPS;
		1543	LEAVE;
		1544	}
		1545
		1546	if (xs_hook)
		1547	xs_hook ();
1320		1548
1321	return 1;	1549	return 1;
1322	}	1550	}
1323		1551
1324	static int	1552	static int
…		…
1334	SV *prev_sv, *next_sv;	1562	SV *prev_sv, *next_sv;
1335		1563
1336	for (;;)	1564	for (;;)
1337	{	1565	{
1338	LOCK;	1566	LOCK;
1339	next_sv = coro_deq (aTHX_ PRIO_MIN);	1567	next_sv = coro_deq (aTHX);
1340		1568
1341	/* nothing to schedule: call the idle handler */	1569	/* nothing to schedule: call the idle handler */
1342	if (expect_false (!next_sv))	1570	if (expect_false (!next_sv))
1343	{	1571	{
1344	dSP;	1572	dSP;
…		…
1348	SAVETMPS;	1576	SAVETMPS;
1349		1577
1350	PUSHMARK (SP);	1578	PUSHMARK (SP);
1351	PUTBACK;	1579	PUTBACK;
1352	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1580	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1581	SPAGAIN;
1353		1582
1354	FREETMPS;	1583	FREETMPS;
1355	LEAVE;	1584	LEAVE;
1356	continue;	1585	continue;
1357	}	1586	}
…		…
1412	{	1641	{
1413	dTHX;	1642	dTHX;
1414	struct transfer_args ta;	1643	struct transfer_args ta;
1415		1644
1416	prepare_schedule (aTHX_ &ta);	1645	prepare_schedule (aTHX_ &ta);
1417	TRANSFER (ta);	1646	TRANSFER (ta, 1);
1418	}	1647	}
1419		1648
1420	static int	1649	static int
1421	api_cede (void)	1650	api_cede (void)
1422	{	1651	{
…		…
1425		1654
1426	prepare_cede (aTHX_ &ta);	1655	prepare_cede (aTHX_ &ta);
1427		1656
1428	if (expect_true (ta.prev != ta.next))	1657	if (expect_true (ta.prev != ta.next))
1429	{	1658	{
1430	TRANSFER (ta);	1659	TRANSFER (ta, 1);
1431	return 1;	1660	return 1;
1432	}	1661	}
1433	else	1662	else
1434	return 0;	1663	return 0;
1435	}	1664	}
…		…
1440	dTHX;	1669	dTHX;
1441	struct transfer_args ta;	1670	struct transfer_args ta;
1442		1671
1443	if (prepare_cede_notself (aTHX_ &ta))	1672	if (prepare_cede_notself (aTHX_ &ta))
1444	{	1673	{
1445	TRANSFER (ta);	1674	TRANSFER (ta, 1);
1446	return 1;	1675	return 1;
1447	}	1676	}
1448	else	1677	else
1449	return 0;	1678	return 0;
1450	}	1679	}
…		…
1456	struct coro *coro = SvSTATE (coro_sv);	1685	struct coro *coro = SvSTATE (coro_sv);
1457		1686
1458	if (flags & CC_TRACE)	1687	if (flags & CC_TRACE)
1459	{	1688	{
1460	if (!coro->cctx)	1689	if (!coro->cctx)
1461	coro->cctx = cctx_new ();	1690	coro->cctx = cctx_new_run ();
1462	else if (!(coro->cctx->flags & CC_TRACE))	1691	else if (!(coro->cctx->flags & CC_TRACE))
1463	croak ("cannot enable tracing on coroutine with custom stack");	1692	croak ("cannot enable tracing on coroutine with custom stack");
1464		1693
1465	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1694	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1466	}	1695	}
…		…
1473	else	1702	else
1474	coro->slot->runops = RUNOPS_DEFAULT;	1703	coro->slot->runops = RUNOPS_DEFAULT;
1475	}	1704	}
1476	}	1705	}
1477		1706
		1707	#if 0
		1708	static int
		1709	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1710	{
		1711	AV *padlist;
		1712	AV *av = (AV *)mg->mg_obj;
		1713
		1714	abort ();
		1715
		1716	return 0;
		1717	}
		1718
		1719	static MGVTBL coro_gensub_vtbl = {
		1720	0, 0, 0, 0,
		1721	coro_gensub_free
		1722	};
		1723	#endif
		1724
		1725	/*****************************************************************************/
		1726	/* PerlIO::cede */
		1727
		1728	typedef struct
		1729	{
		1730	PerlIOBuf base;
		1731	NV next, every;
		1732	} PerlIOCede;
		1733
		1734	static IV
		1735	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1736	{
		1737	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1738
		1739	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1740	self->next = nvtime () + self->every;
		1741
		1742	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1743	}
		1744
		1745	static SV *
		1746	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1747	{
		1748	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1749
		1750	return newSVnv (self->every);
		1751	}
		1752
		1753	static IV
		1754	PerlIOCede_flush (pTHX_ PerlIO *f)
		1755	{
		1756	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1757	double now = nvtime ();
		1758
		1759	if (now >= self->next)
		1760	{
		1761	api_cede ();
		1762	self->next = now + self->every;
		1763	}
		1764
		1765	return PerlIOBuf_flush (aTHX_ f);
		1766	}
		1767
		1768	static PerlIO_funcs PerlIO_cede =
		1769	{
		1770	sizeof(PerlIO_funcs),
		1771	"cede",
		1772	sizeof(PerlIOCede),
		1773	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1774	PerlIOCede_pushed,
		1775	PerlIOBuf_popped,
		1776	PerlIOBuf_open,
		1777	PerlIOBase_binmode,
		1778	PerlIOCede_getarg,
		1779	PerlIOBase_fileno,
		1780	PerlIOBuf_dup,
		1781	PerlIOBuf_read,
		1782	PerlIOBuf_unread,
		1783	PerlIOBuf_write,
		1784	PerlIOBuf_seek,
		1785	PerlIOBuf_tell,
		1786	PerlIOBuf_close,
		1787	PerlIOCede_flush,
		1788	PerlIOBuf_fill,
		1789	PerlIOBase_eof,
		1790	PerlIOBase_error,
		1791	PerlIOBase_clearerr,
		1792	PerlIOBase_setlinebuf,
		1793	PerlIOBuf_get_base,
		1794	PerlIOBuf_bufsiz,
		1795	PerlIOBuf_get_ptr,
		1796	PerlIOBuf_get_cnt,
		1797	PerlIOBuf_set_ptrcnt,
		1798	};
		1799
		1800
1478	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1801	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1479		1802
1480	PROTOTYPES: DISABLE	1803	PROTOTYPES: DISABLE
1481		1804
1482	BOOT:	1805	BOOT:
1483	{	1806	{
1484	#ifdef USE_ITHREADS	1807	#ifdef USE_ITHREADS
1485	MUTEX_INIT (&coro_mutex);	1808	MUTEX_INIT (&coro_lock);
		1809	# if CORO_PTHREAD
		1810	coro_thx = PERL_GET_CONTEXT;
		1811	# endif
1486	#endif	1812	#endif
1487	BOOT_PAGESIZE;	1813	BOOT_PAGESIZE;
1488		1814
1489	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1815	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1490	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1816	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1491		1817
1492	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1818	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);	1819	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1820	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1494		1821
1495	if (!PL_diehook) PL_diehook = SvREFCNT_inc (sv_diehook);	1822	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1496	if (!PL_warnhook) PL_warnhook = SvREFCNT_inc (sv_warnhook);	1823	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1824	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1497		1825
1498	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1826	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1499		1827
1500	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1828	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1501	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1829	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1506	main_top_env = PL_top_env;	1834	main_top_env = PL_top_env;
1507		1835
1508	while (main_top_env->je_prev)	1836	while (main_top_env->je_prev)
1509	main_top_env = main_top_env->je_prev;	1837	main_top_env = main_top_env->je_prev;
1510		1838
1511	coroapi.ver = CORO_API_VERSION;	1839	coroapi.ver = CORO_API_VERSION;
		1840	coroapi.rev = CORO_API_REVISION;
1512	coroapi.transfer = api_transfer;	1841	coroapi.transfer = api_transfer;
		1842
		1843	{
		1844	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1845
		1846	if (!svp) croak ("Time::HiRes is required");
		1847	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1848
		1849	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1850	}
1513		1851
1514	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1852	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1515	}	1853	}
1516		1854
1517	SV *	1855	SV *
1518	new (char *klass, ...)	1856	new (char *klass, ...)
1519	CODE:	1857	CODE:
1520	{	1858	{
1521	struct coro *coro;	1859	struct coro *coro;
		1860	MAGIC *mg;
1522	HV *hv;	1861	HV *hv;
1523	int i;	1862	int i;
1524		1863
1525	Newz (0, coro, 1, struct coro);	1864	Newz (0, coro, 1, struct coro);
1526	coro->args = newAV ();	1865	coro->args = newAV ();
…		…
1529	if (coro_first) coro_first->prev = coro;	1868	if (coro_first) coro_first->prev = coro;
1530	coro->next = coro_first;	1869	coro->next = coro_first;
1531	coro_first = coro;	1870	coro_first = coro;
1532		1871
1533	coro->hv = hv = newHV ();	1872	coro->hv = hv = newHV ();
1534	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1873	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1874	mg->mg_flags |= MGf_DUP;
1535	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1875	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1536		1876
1537	av_extend (coro->args, items - 1);	1877	av_extend (coro->args, items - 1);
1538	for (i = 1; i < items; i++)	1878	for (i = 1; i < items; i++)
1539	av_push (coro->args, newSVsv (ST (i)));	1879	av_push (coro->args, newSVsv (ST (i)));
…		…
1553	Coro::cede_notself = 4	1893	Coro::cede_notself = 4
1554	CODE:	1894	CODE:
1555	{	1895	{
1556	struct transfer_args ta;	1896	struct transfer_args ta;
1557		1897
		1898	PUTBACK;
1558	switch (ix)	1899	switch (ix)
1559	{	1900	{
1560	case 0:	1901	case 0:
1561	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1902	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1562	ta.next = 0;	1903	ta.next = 0;
1563	break;	1904	break;
1564		1905
1565	case 1:	1906	case 1:
1566	if (items != 2)	1907	if (items != 2)
1567	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1908	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1568		1909
1569	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1910	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1570	break;	1911	break;
1571		1912
1572	case 2:	1913	case 2:
…		…
1581	if (!prepare_cede_notself (aTHX_ &ta))	1922	if (!prepare_cede_notself (aTHX_ &ta))
1582	XSRETURN_EMPTY;	1923	XSRETURN_EMPTY;
1583		1924
1584	break;	1925	break;
1585	}	1926	}
		1927	SPAGAIN;
1586		1928
1587	BARRIER;	1929	BARRIER;
		1930	PUTBACK;
1588	TRANSFER (ta);	1931	TRANSFER (ta, 0);
1589		1932	SPAGAIN; /* might be the sp of a different coroutine now */
1590	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))	1933	/* be extra careful not to ever do anything after TRANSFER */
1591	XSRETURN_YES;
1592	}	1934	}
1593		1935
1594	bool	1936	bool
1595	_destroy (SV *coro_sv)	1937	_destroy (SV *coro_sv)
1596	CODE:	1938	CODE:
1597	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1939	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1598	OUTPUT:	1940	OUTPUT:
1599	RETVAL	1941	RETVAL
1600		1942
1601	void	1943	void
1602	_exit (code)	1944	_exit (int code)
1603	int code
1604	PROTOTYPE: $	1945	PROTOTYPE: $
1605	CODE:	1946	CODE:
1606	_exit (code);	1947	_exit (code);
1607		1948
1608	int	1949	int
1609	cctx_stacksize (int new_stacksize = 0)	1950	cctx_stacksize (int new_stacksize = 0)
1610	CODE:	1951	CODE:
1611	RETVAL = coro_stacksize;	1952	RETVAL = cctx_stacksize;
1612	if (new_stacksize)	1953	if (new_stacksize)
		1954	{
1613	coro_stacksize = new_stacksize;	1955	cctx_stacksize = new_stacksize;
		1956	++cctx_gen;
		1957	}
		1958	OUTPUT:
		1959	RETVAL
		1960
		1961	int
		1962	cctx_max_idle (int max_idle = 0)
		1963	CODE:
		1964	RETVAL = cctx_max_idle;
		1965	if (max_idle > 1)
		1966	cctx_max_idle = max_idle;
1614	OUTPUT:	1967	OUTPUT:
1615	RETVAL	1968	RETVAL
1616		1969
1617	int	1970	int
1618	cctx_count ()	1971	cctx_count ()
…		…
1642	call (Coro::State coro, SV *coderef)	1995	call (Coro::State coro, SV *coderef)
1643	ALIAS:	1996	ALIAS:
1644	eval = 1	1997	eval = 1
1645	CODE:	1998	CODE:
1646	{	1999	{
1647	if (coro->mainstack)	2000	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1648	{	2001	{
1649	struct coro temp;	2002	struct coro temp;
1650		2003
1651	if (!(coro->flags & CF_RUNNING))	2004	if (!(coro->flags & CF_RUNNING))
1652	{	2005	{
		2006	PUTBACK;
1653	save_perl (aTHX_ &temp);	2007	save_perl (aTHX_ &temp);
1654	load_perl (aTHX_ coro);	2008	load_perl (aTHX_ coro);
1655	}	2009	}
1656		2010
1657	{	2011	{
1658	dSP;	2012	dSP;
1659	ENTER;	2013	ENTER;
1660	SAVETMPS;	2014	SAVETMPS;
		2015	PUTBACK;
		2016	PUSHSTACK;
1661	PUSHMARK (SP);	2017	PUSHMARK (SP);
1662	PUTBACK;
1663		2018
1664	if (ix)	2019	if (ix)
1665	eval_sv (coderef, 0);	2020	eval_sv (coderef, 0);
1666	else	2021	else
1667	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2022	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1668		2023
		2024	POPSTACK;
1669	SPAGAIN;	2025	SPAGAIN;
1670	FREETMPS;	2026	FREETMPS;
1671	LEAVE;	2027	LEAVE;
1672	PUTBACK;	2028	PUTBACK;
1673	}	2029	}
1674		2030
1675	if (!(coro->flags & CF_RUNNING))	2031	if (!(coro->flags & CF_RUNNING))
1676	{	2032	{
1677	save_perl (aTHX_ coro);	2033	save_perl (aTHX_ coro);
1678	load_perl (aTHX_ &temp);	2034	load_perl (aTHX_ &temp);
		2035	SPAGAIN;
1679	}	2036	}
1680	}	2037	}
1681	}	2038	}
1682		2039
1683	SV *	2040	SV *
…		…
1695		2052
1696	void	2053	void
1697	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2054	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1698		2055
1699	SV *	2056	SV *
1700	has_stack (Coro::State coro)	2057	has_cctx (Coro::State coro)
1701	PROTOTYPE: $	2058	PROTOTYPE: $
1702	CODE:	2059	CODE:
1703	RETVAL = boolSV (!!coro->cctx);	2060	RETVAL = boolSV (!!coro->cctx);
1704	OUTPUT:	2061	OUTPUT:
1705	RETVAL	2062	RETVAL
…		…
1710	CODE:	2067	CODE:
1711	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2068	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1712	OUTPUT:	2069	OUTPUT:
1713	RETVAL	2070	RETVAL
1714		2071
1715	IV	2072	UV
1716	rss (Coro::State coro)	2073	rss (Coro::State coro)
1717	PROTOTYPE: $	2074	PROTOTYPE: $
1718	ALIAS:	2075	ALIAS:
1719	usecount = 1	2076	usecount = 1
1720	CODE:	2077	CODE:
…		…
1724	case 1: RETVAL = coro->usecount; break;	2081	case 1: RETVAL = coro->usecount; break;
1725	}	2082	}
1726	OUTPUT:	2083	OUTPUT:
1727	RETVAL	2084	RETVAL
1728		2085
		2086	void
		2087	force_cctx ()
		2088	CODE:
		2089	struct coro *coro = SvSTATE (coro_current);
		2090	coro->cctx->idle_sp = 0;
		2091
		2092	void
		2093	swap_defsv (Coro::State self)
		2094	PROTOTYPE: $
		2095	ALIAS:
		2096	swap_defav = 1
		2097	CODE:
		2098	if (!self->slot)
		2099	croak ("cannot swap state with coroutine that has no saved state");
		2100	else
		2101	{
		2102	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2103	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2104
		2105	SV *tmp = *src; *src = *dst; *dst = tmp;
		2106	}
1729		2107
1730	MODULE = Coro::State PACKAGE = Coro	2108	MODULE = Coro::State PACKAGE = Coro
1731		2109
1732	BOOT:	2110	BOOT:
1733	{	2111	{
1734	int i;	2112	int i;
1735		2113
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);	2114	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2115	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2116	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1739		2117
1740	coro_current = coro_get_sv ("Coro::current", FALSE);	2118	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1741	SvREADONLY_on (coro_current);	2119	SvREADONLY_on (coro_current);
1742		2120
1743	coro_stash = gv_stashpv ("Coro", TRUE);	2121	coro_stash = gv_stashpv ("Coro", TRUE);
1744		2122
1745	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2123	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1773	void	2151	void
1774	_set_current (SV *current)	2152	_set_current (SV *current)
1775	PROTOTYPE: $	2153	PROTOTYPE: $
1776	CODE:	2154	CODE:
1777	SvREFCNT_dec (SvRV (coro_current));	2155	SvREFCNT_dec (SvRV (coro_current));
1778	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2156	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2157
		2158	void
		2159	_set_readyhook (SV *hook)
		2160	PROTOTYPE: $
		2161	CODE:
		2162	LOCK;
		2163	SvREFCNT_dec (coro_readyhook);
		2164	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2165	UNLOCK;
1779		2166
1780	int	2167	int
1781	prio (Coro::State coro, int newprio = 0)	2168	prio (Coro::State coro, int newprio = 0)
1782	ALIAS:	2169	ALIAS:
1783	nice = 1	2170	nice = 1
…		…
1833	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2220	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1834	AV *invoke_av;	2221	AV *invoke_av;
1835	int i, len;	2222	int i, len;
1836		2223
1837	if (!invoke)	2224	if (!invoke)
		2225	{
		2226	SV *old = PL_diehook;
		2227	PL_diehook = 0;
		2228	SvREFCNT_dec (old);
1838	croak ("\3async_pool terminate\2\n");	2229	croak ("\3async_pool terminate\2\n");
		2230	}
1839		2231
1840	SvREFCNT_dec (coro->saved_deffh);	2232	SvREFCNT_dec (coro->saved_deffh);
1841	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2233	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1842		2234
1843	hv_store (hv, "desc", sizeof ("desc") - 1,	2235	hv_store (hv, "desc", sizeof ("desc") - 1,
1844	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2236	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1845		2237
1846	invoke_av = (AV *)SvRV (invoke);	2238	invoke_av = (AV *)SvRV (invoke);
…		…
1850		2242
1851	if (len > 0)	2243	if (len > 0)
1852	{	2244	{
1853	av_fill (defav, len - 1);	2245	av_fill (defav, len - 1);
1854	for (i = 0; i < len; ++i)	2246	for (i = 0; i < len; ++i)
1855	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2247	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1856	}	2248	}
1857		2249
1858	SvREFCNT_dec (invoke);	2250	SvREFCNT_dec (invoke);
1859	}	2251	}
1860		2252
…		…
1867	sv_setsv (cb, &PL_sv_undef);	2259	sv_setsv (cb, &PL_sv_undef);
1868		2260
1869	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2261	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1870	coro->saved_deffh = 0;	2262	coro->saved_deffh = 0;
1871		2263
1872	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2264	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1873	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2265	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2266	{
		2267	SV *old = PL_diehook;
		2268	PL_diehook = 0;
		2269	SvREFCNT_dec (old);
1874	croak ("\3async_pool terminate\2\n");	2270	croak ("\3async_pool terminate\2\n");
		2271	}
1875		2272
1876	av_clear (GvAV (PL_defgv));	2273	av_clear (GvAV (PL_defgv));
1877	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2274	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1878	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2275	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1879		2276
…		…
1883	api_trace (coro_current, 0);	2280	api_trace (coro_current, 0);
1884		2281
1885	av_push (av_async_pool, newSVsv (coro_current));	2282	av_push (av_async_pool, newSVsv (coro_current));
1886	}	2283	}
1887		2284
		2285	#if 0
		2286
		2287	void
		2288	_generator_call (...)
		2289	PROTOTYPE: @
		2290	PPCODE:
		2291	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2292	xxxx
		2293	abort ();
		2294
		2295	SV *
		2296	gensub (SV *sub, ...)
		2297	PROTOTYPE: &;@
		2298	CODE:
		2299	{
		2300	struct coro *coro;
		2301	MAGIC *mg;
		2302	CV *xcv;
		2303	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2304	int i;
		2305
		2306	CvGV (ncv) = CvGV (cv);
		2307	CvFILE (ncv) = CvFILE (cv);
		2308
		2309	Newz (0, coro, 1, struct coro);
		2310	coro->args = newAV ();
		2311	coro->flags = CF_NEW;
		2312
		2313	av_extend (coro->args, items - 1);
		2314	for (i = 1; i < items; i++)
		2315	av_push (coro->args, newSVsv (ST (i)));
		2316
		2317	CvISXSUB_on (ncv);
		2318	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2319
		2320	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2321
		2322	CvXSUB (ncv) = CvXSUB (xcv);
		2323	CvANON_on (ncv);
		2324
		2325	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2326	RETVAL = newRV_noinc ((SV *)ncv);
		2327	}
		2328	OUTPUT:
		2329	RETVAL
		2330
		2331	#endif
		2332
1888		2333
1889	MODULE = Coro::State PACKAGE = Coro::AIO	2334	MODULE = Coro::State PACKAGE = Coro::AIO
1890		2335
1891	SV *	2336	void
1892	_get_state ()	2337	_get_state (SV *self)
1893	CODE:	2338	PPCODE:
1894	{	2339	{
1895	struct io_state *data;	2340	AV *defav = GvAV (PL_defgv);
1896		2341	AV *av = newAV ();
		2342	int i;
1897	RETVAL = newSV (sizeof (struct io_state));	2343	SV *data_sv = newSV (sizeof (struct io_state));
1898	data = (struct io_state *)SvPVX (RETVAL);	2344	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1899	SvCUR_set (RETVAL, sizeof (struct io_state));	2345	SvCUR_set (data_sv, sizeof (struct io_state));
1900	SvPOK_only (RETVAL);	2346	SvPOK_only (data_sv);
1901		2347
1902	data->errorno = errno;	2348	data->errorno = errno;
1903	data->laststype = PL_laststype;	2349	data->laststype = PL_laststype;
1904	data->laststatval = PL_laststatval;	2350	data->laststatval = PL_laststatval;
1905	data->statcache = PL_statcache;	2351	data->statcache = PL_statcache;
		2352
		2353	av_extend (av, AvFILLp (defav) + 1 + 1);
		2354
		2355	for (i = 0; i <= AvFILLp (defav); ++i)
		2356	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2357
		2358	av_push (av, data_sv);
		2359
		2360	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2361
		2362	api_ready (self);
1906	}	2363	}
1907	OUTPUT:
1908	RETVAL
1909		2364
1910	void	2365	void
1911	_set_state (char *data_)	2366	_set_state (SV *state)
1912	PROTOTYPE: $	2367	PROTOTYPE: $
1913	CODE:	2368	PPCODE:
1914	{	2369	{
1915	struct io_state *data = (void *)data_;	2370	AV *av = (AV *)SvRV (state);
		2371	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2372	int i;
1916		2373
1917	errno = data->errorno;	2374	errno = data->errorno;
1918	PL_laststype = data->laststype;	2375	PL_laststype = data->laststype;
1919	PL_laststatval = data->laststatval;	2376	PL_laststatval = data->laststatval;
1920	PL_statcache = data->statcache;	2377	PL_statcache = data->statcache;
1921	}
1922		2378
		2379	EXTEND (SP, AvFILLp (av));
		2380	for (i = 0; i < AvFILLp (av); ++i)
		2381	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2382	}
		2383
		2384
		2385	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2386
		2387	BOOT:
		2388	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2389
		2390	SV *
		2391	_schedule (...)
		2392	PROTOTYPE: @
		2393	CODE:
		2394	{
		2395	static int incede;
		2396
		2397	api_cede_notself ();
		2398
		2399	++incede;
		2400	while (coro_nready >= incede && api_cede ())
		2401	;
		2402
		2403	sv_setsv (sv_activity, &PL_sv_undef);
		2404	if (coro_nready >= incede)
		2405	{
		2406	PUSHMARK (SP);
		2407	PUTBACK;
		2408	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2409	SPAGAIN;
		2410	}
		2411
		2412	--incede;
		2413	}
		2414
		2415
		2416	MODULE = Coro::State PACKAGE = PerlIO::cede
		2417
		2418	BOOT:
		2419	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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