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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.214 by root, Sat Oct 13 23:19:10 2007 UTC vs.
Revision 1.263 by root, Wed Nov 12 04:49:06 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
15	#include <inttypes.h> /* portable stdint.h */	23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
16		25
17	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
18	# include <unistd.h>	27	# include <unistd.h>
19	# include <sys/mman.h>	28	# include <sys/mman.h>
20	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
37	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
38	#endif	47	#endif
39		48
40	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
41	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43	#else
44	# define REGISTER_STACK(cctx,start,end)
45	#endif	51	#endif
46		52
47	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
48	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
49		55
50	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
51	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
52	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
53	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
72	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
73	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
74	# endif	80	# endif
75	#endif	81	#endif
76		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
		93	/* 5.8.8 */
		94	#ifndef GV_NOTQUAL
		95	# define GV_NOTQUAL 0
		96	#endif
		97	#ifndef newSV
		98	# define newSV(l) NEWSV(0,l)
		99	#endif
		100
77	/* 5.8.7 */	101	/* 5.8.7 */
78	#ifndef SvRV_set	102	#ifndef SvRV_set
79	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
80	#endif
81
82	/* 5.8.8 */
83	#ifndef GV_NOTQUAL
84	# define GV_NOTQUAL 0
85	#endif
86	#ifndef newSV
87	# define newSV(l) NEWSV(0,l)
88	#endif	104	#endif
89		105
90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	106	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91	# undef CORO_STACKGUARD	107	# undef CORO_STACKGUARD
92	#endif	108	#endif
…		…
109		125
110	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
111	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	128	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113	# define expect(expr,value) __builtin_expect ((expr),(value))	129	# define expect(expr,value) __builtin_expect ((expr),(value))
		130	# define INLINE static inline
114	#else	131	#else
115	# define attribute(x)	132	# define attribute(x)
116	# define BARRIER	133	# define BARRIER
117	# define expect(expr,value) (expr)	134	# define expect(expr,value) (expr)
		135	# define INLINE static
118	#endif	136	#endif
119		137
120	#define expect_false(expr) expect ((expr) != 0, 0)	138	#define expect_false(expr) expect ((expr) != 0, 0)
121	#define expect_true(expr) expect ((expr) != 0, 1)	139	#define expect_true(expr) expect ((expr) != 0, 1)
122		140
123	#define NOINLINE attribute ((noinline))	141	#define NOINLINE attribute ((noinline))
124		142
125	#include "CoroAPI.h"	143	#include "CoroAPI.h"
126		144
127	#ifdef USE_ITHREADS	145	#ifdef USE_ITHREADS
		146
128	static perl_mutex coro_mutex;	147	static perl_mutex coro_lock;
129	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	148	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
130	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	149	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		150	# if CORO_PTHREAD
		151	static void *coro_thx;
		152	# endif
		153
131	#else	154	#else
		155
132	# define LOCK (void)0	156	# define LOCK (void)0
133	# define UNLOCK (void)0	157	# define UNLOCK (void)0
		158
134	#endif	159	#endif
		160
		161	# undef LOCK
		162	# define LOCK (void)0
		163	# undef UNLOCK
		164	# define UNLOCK (void)0
135		165
136	/* helper storage struct for Coro::AIO */	166	/* helper storage struct for Coro::AIO */
137	struct io_state	167	struct io_state
138	{	168	{
		169	AV *res;
139	int errorno;	170	int errorno;
140	I32 laststype;	171	I32 laststype; /* U16 in 5.10.0 */
141	int laststatval;	172	int laststatval;
142	Stat_t statcache;	173	Stat_t statcache;
143	};	174	};
144		175
		176	static double (*nvtime)(); /* so why doesn't it take void? */
		177
		178	static U32 cctx_gen;
145	static size_t coro_stacksize = CORO_STACKSIZE;	179	static size_t cctx_stacksize = CORO_STACKSIZE;
146	static struct CoroAPI coroapi;	180	static struct CoroAPI coroapi;
147	static AV *main_mainstack; /* used to differentiate between $main and others */	181	static AV *main_mainstack; /* used to differentiate between $main and others */
148	static JMPENV *main_top_env;	182	static JMPENV *main_top_env;
149	static HV *coro_state_stash, *coro_stash;	183	static HV *coro_state_stash, *coro_stash;
150	static SV *coro_mortal; /* will be freed after next transfer */	184	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		185	static volatile struct coro *transfer_next;
		186
		187	struct transfer_args
		188	{
		189	struct coro *prev, *next;
		190	};
151		191
152	static GV *irsgv; /* $/ */	192	static GV *irsgv; /* $/ */
153	static GV *stdoutgv; /* *STDOUT */	193	static GV *stdoutgv; /* *STDOUT */
154	static SV *rv_diehook;	194	static SV *rv_diehook;
155	static SV *rv_warnhook;	195	static SV *rv_warnhook;
…		…
157		197
158	/* async_pool helper stuff */	198	/* async_pool helper stuff */
159	static SV *sv_pool_rss;	199	static SV *sv_pool_rss;
160	static SV *sv_pool_size;	200	static SV *sv_pool_size;
161	static AV *av_async_pool;	201	static AV *av_async_pool;
		202
		203	/* Coro::AnyEvent */
		204	static SV *sv_activity;
162		205
163	static struct coro_cctx *cctx_first;	206	static struct coro_cctx *cctx_first;
164	static int cctx_count, cctx_idle;	207	static int cctx_count, cctx_idle;
165		208
166	enum {	209	enum {
…		…
184	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	227	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
185	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	228	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
186	JMPENV *top_env;	229	JMPENV *top_env;
187	coro_context cctx;	230	coro_context cctx;
188		231
		232	U32 gen;
189	#if CORO_USE_VALGRIND	233	#if CORO_USE_VALGRIND
190	int valgrind_id;	234	int valgrind_id;
191	#endif	235	#endif
192	unsigned char flags;	236	unsigned char flags;
193	} coro_cctx;	237	} coro_cctx;
…		…
252	#define PRIO_IDLE -3	296	#define PRIO_IDLE -3
253	#define PRIO_MIN -4	297	#define PRIO_MIN -4
254		298
255	/* for Coro.pm */	299	/* for Coro.pm */
256	static SV *coro_current;	300	static SV *coro_current;
		301	static SV *coro_readyhook;
257	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	302	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
258	static int coro_nready;	303	static int coro_nready;
259	static struct coro *coro_first;	304	static struct coro *coro_first;
260		305
261	/** lowlevel stuff **********************************************************/	306	/** lowlevel stuff **********************************************************/
262		307
263	static SV *	308	static SV *
264	coro_get_sv (pTHX_ const char *name, int create)	309	coro_get_sv (pTHX_ const char *name, int create)
265	{	310	{
266	#if PERL_VERSION_ATLEAST (5,9,0)	311	#if PERL_VERSION_ATLEAST (5,10,0)
267	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	312	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
268	get_sv (name, create);	313	get_sv (name, create);
269	#endif	314	#endif
270	return get_sv (name, create);	315	return get_sv (name, create);
271	}	316	}
272		317
273	static AV *	318	static AV *
274	coro_get_av (pTHX_ const char *name, int create)	319	coro_get_av (pTHX_ const char *name, int create)
275	{	320	{
276	#if PERL_VERSION_ATLEAST (5,9,0)	321	#if PERL_VERSION_ATLEAST (5,10,0)
277	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	322	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
278	get_av (name, create);	323	get_av (name, create);
279	#endif	324	#endif
280	return get_av (name, create);	325	return get_av (name, create);
281	}	326	}
282		327
283	static HV *	328	static HV *
284	coro_get_hv (pTHX_ const char *name, int create)	329	coro_get_hv (pTHX_ const char *name, int create)
285	{	330	{
286	#if PERL_VERSION_ATLEAST (5,9,0)	331	#if PERL_VERSION_ATLEAST (5,10,0)
287	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	332	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
288	get_hv (name, create);	333	get_hv (name, create);
289	#endif	334	#endif
290	return get_hv (name, create);	335	return get_hv (name, create);
291	}	336	}
…		…
296	AV *padlist = CvPADLIST (cv);	341	AV *padlist = CvPADLIST (cv);
297	AV *newpadlist, *newpad;	342	AV *newpadlist, *newpad;
298		343
299	newpadlist = newAV ();	344	newpadlist = newAV ();
300	AvREAL_off (newpadlist);	345	AvREAL_off (newpadlist);
301	#if PERL_VERSION_ATLEAST (5,9,0)	346	#if PERL_VERSION_ATLEAST (5,10,0)
302	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
303	#else	348	#else
304	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	349	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
305	#endif	350	#endif
306	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	351	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
307	--AvFILLp (padlist);	352	--AvFILLp (padlist);
308		353
309	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	354	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
310	av_store (newpadlist, 1, (SV *)newpad);	355	av_store (newpadlist, 1, (SV *)newpad);
311		356
312	return newpadlist;	357	return newpadlist;
313	}	358	}
314		359
…		…
344		389
345	/* casting is fun. */	390	/* casting is fun. */
346	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	391	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
347	free_padlist (aTHX_ padlist);	392	free_padlist (aTHX_ padlist);
348		393
		394	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
		395
349	return 0;	396	return 0;
350	}	397	}
351		398
352	#define CORO_MAGIC_type_cv PERL_MAGIC_ext	399	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
353	#define CORO_MAGIC_type_state PERL_MAGIC_ext	400	#define CORO_MAGIC_type_state PERL_MAGIC_ext
…		…
355	static MGVTBL coro_cv_vtbl = {	402	static MGVTBL coro_cv_vtbl = {
356	0, 0, 0, 0,	403	0, 0, 0, 0,
357	coro_cv_free	404	coro_cv_free
358	};	405	};
359		406
360	#define CORO_MAGIC(sv,type) \	407	#define CORO_MAGIC(sv, type) \
361	SvMAGIC (sv) \	408	SvMAGIC (sv) \
362	? SvMAGIC (sv)->mg_type == type \	409	? SvMAGIC (sv)->mg_type == type \
363	? SvMAGIC (sv) \	410	? SvMAGIC (sv) \
364	: mg_find (sv, type) \	411	: mg_find (sv, type) \
365	: 0	412	: 0
366		413
367	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	414	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
368	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)	415	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
369		416
370	static struct coro *	417	INLINE struct coro *
371	SvSTATE_ (pTHX_ SV *coro)	418	SvSTATE_ (pTHX_ SV *coro)
372	{	419	{
373	HV *stash;	420	HV *stash;
374	MAGIC *mg;	421	MAGIC *mg;
375		422
…		…
403	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	450	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
404	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	451	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
405	else	452	else
406	{	453	{
407	#if CORO_PREFER_PERL_FUNCTIONS	454	#if CORO_PREFER_PERL_FUNCTIONS
408	/* this is probably cleaner, but also slower? */	455	/* this is probably cleaner? but also slower! */
		456	/* in practise, it seems to be less stable */
409	CV *cp = Perl_cv_clone (cv);	457	CV *cp = Perl_cv_clone (cv);
410	CvPADLIST (cv) = CvPADLIST (cp);	458	CvPADLIST (cv) = CvPADLIST (cp);
411	CvPADLIST (cp) = 0;	459	CvPADLIST (cp) = 0;
412	SvREFCNT_dec (cp);	460	SvREFCNT_dec (cp);
413	#else	461	#else
…		…
497		545
498	if (expect_true (CvDEPTH (cv)))	546	if (expect_true (CvDEPTH (cv)))
499	{	547	{
500	EXTEND (SP, 3);	548	EXTEND (SP, 3);
501	PUSHs ((SV *)CvPADLIST (cv));	549	PUSHs ((SV *)CvPADLIST (cv));
502	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	550	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
503	PUSHs ((SV *)cv);	551	PUSHs ((SV *)cv);
504		552
505	CvDEPTH (cv) = 0;	553	CvDEPTH (cv) = 0;
506	get_padlist (aTHX_ cv);	554	get_padlist (aTHX_ cv);
507	}	555	}
…		…
587		635
588	New(54,PL_savestack,24,ANY);	636	New(54,PL_savestack,24,ANY);
589	PL_savestack_ix = 0;	637	PL_savestack_ix = 0;
590	PL_savestack_max = 24;	638	PL_savestack_max = 24;
591		639
592	#if !PERL_VERSION_ATLEAST (5,9,0)	640	#if !PERL_VERSION_ATLEAST (5,10,0)
593	New(54,PL_retstack,4,OP*);	641	New(54,PL_retstack,4,OP*);
594	PL_retstack_ix = 0;	642	PL_retstack_ix = 0;
595	PL_retstack_max = 4;	643	PL_retstack_max = 4;
596	#endif	644	#endif
597	}	645	}
…		…
599		647
600	/*	648	/*
601	* destroy the stacks, the callchain etc...	649	* destroy the stacks, the callchain etc...
602	*/	650	*/
603	static void	651	static void
604	coro_destroy_stacks (pTHX)	652	coro_destruct_stacks (pTHX)
605	{	653	{
606	while (PL_curstackinfo->si_next)	654	while (PL_curstackinfo->si_next)
607	PL_curstackinfo = PL_curstackinfo->si_next;	655	PL_curstackinfo = PL_curstackinfo->si_next;
608		656
609	while (PL_curstackinfo)	657	while (PL_curstackinfo)
…		…
620		668
621	Safefree (PL_tmps_stack);	669	Safefree (PL_tmps_stack);
622	Safefree (PL_markstack);	670	Safefree (PL_markstack);
623	Safefree (PL_scopestack);	671	Safefree (PL_scopestack);
624	Safefree (PL_savestack);	672	Safefree (PL_savestack);
625	#if !PERL_VERSION_ATLEAST (5,9,0)	673	#if !PERL_VERSION_ATLEAST (5,10,0)
626	Safefree (PL_retstack);	674	Safefree (PL_retstack);
627	#endif	675	#endif
628	}	676	}
629		677
630	static size_t	678	static size_t
…		…
646	#undef VAR	694	#undef VAR
647	}	695	}
648	else	696	else
649	slot = coro->slot;	697	slot = coro->slot;
650		698
		699	if (slot)
		700	{
651	rss += sizeof (slot->curstackinfo);	701	rss += sizeof (slot->curstackinfo);
652	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	702	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
653	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	703	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
654	rss += slot->tmps_max * sizeof (SV *);	704	rss += slot->tmps_max * sizeof (SV *);
655	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	705	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
656	rss += slot->scopestack_max * sizeof (I32);	706	rss += slot->scopestack_max * sizeof (I32);
657	rss += slot->savestack_max * sizeof (ANY);	707	rss += slot->savestack_max * sizeof (ANY);
658		708
659	#if !PERL_VERSION_ATLEAST (5,9,0)	709	#if !PERL_VERSION_ATLEAST (5,10,0)
660	rss += slot->retstack_max * sizeof (OP *);	710	rss += slot->retstack_max * sizeof (OP *);
661	#endif	711	#endif
		712	}
662	}	713	}
663		714
664	return rss;	715	return rss;
665	}	716	}
666		717
667	/** coroutine stack handling ************************************************/	718	/** coroutine stack handling ************************************************/
668		719
669	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);	720	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		721	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		722	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		723
		724	/* apparently < 5.8.8 */
		725	#ifndef MgPV_nolen_const
		726	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		727	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		728	(const char*)(mg)->mg_ptr)
		729	#endif
		730
		731	/* we sometimes need to create the effect of entersub calling us */
		732	#define ENTERSUB_HEAD ENTER; SAVETMPS
		733	/* we somtimes need to create the effect of leaving via entersub */
		734	#define ENTERSUB_TAIL LEAVE
670		735
671	/*	736	/*
672	* This overrides the default magic get method of %SIG elements.	737	* This overrides the default magic get method of %SIG elements.
673	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	738	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
674	* and instead of tryign to save and restore the hash elements, we just provide	739	* and instead of tryign to save and restore the hash elements, we just provide
…		…
682	{	747	{
683	const char *s = MgPV_nolen_const (mg);	748	const char *s = MgPV_nolen_const (mg);
684		749
685	if (*s == '_')	750	if (*s == '_')
686	{	751	{
687	if (strEQ (s, "__DIE__" ) && PL_diehook ) return sv_setsv (sv, PL_diehook ), 0;	752	SV **svp = 0;
688	if (strEQ (s, "__WARN__") && PL_warnhook) return sv_setsv (sv, PL_warnhook), 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_setsv (sv, *svp ? *svp : &PL_sv_undef);
		760	return 0;
		761	}
		762	}
		763
		764	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		765	}
		766
		767	static int
		768	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		769	{
		770	const char *s = MgPV_nolen_const (mg);
		771
		772	if (*s == '_')
689	}	773	{
		774	SV **svp = 0;
690		775
		776	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		777	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		778
		779	if (svp)
		780	{
		781	SV *old = *svp;
		782	*svp = 0;
		783	SvREFCNT_dec (old);
		784	return 0;
		785	}
		786	}
		787
		788	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		789	}
		790
		791	static int
		792	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		793	{
		794	const char *s = MgPV_nolen_const (mg);
		795
		796	if (*s == '_')
		797	{
		798	SV **svp = 0;
		799
		800	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		801	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		802
		803	if (svp)
		804	{
		805	SV *old = *svp;
		806	*svp = newSVsv (sv);
		807	SvREFCNT_dec (old);
		808	return 0;
		809	}
		810	}
		811
691	return orig_sigelem_get (aTHX_ sv, mg);	812	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
692	}	813	}
693		814
694	static void	815	static void
695	coro_setup (pTHX_ struct coro *coro)	816	coro_setup (pTHX_ struct coro *coro)
696	{	817	{
…		…
706	PL_curpm = 0;	827	PL_curpm = 0;
707	PL_curpad = 0;	828	PL_curpad = 0;
708	PL_localizing = 0;	829	PL_localizing = 0;
709	PL_dirty = 0;	830	PL_dirty = 0;
710	PL_restartop = 0;	831	PL_restartop = 0;
		832	#if PERL_VERSION_ATLEAST (5,10,0)
		833	PL_parser = 0;
		834	#endif
711		835
712	/* recreate the die/warn hooks */	836	/* recreate the die/warn hooks */
713	PL_diehook = 0;	837	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
714	hv_store (hv_sig, "__DIE__", sizeof ("__DIE__") - 1, newSV (0), 0);	838	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
715	PL_diehook = SvREFCNT_inc (rv_diehook);
716
717	PL_warnhook = 0;
718	hv_store (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, newSV (0), 0);
719	PL_warnhook = SvREFCNT_inc (rv_warnhook);
720		839
721	GvSV (PL_defgv) = newSV (0);	840	GvSV (PL_defgv) = newSV (0);
722	GvAV (PL_defgv) = coro->args; coro->args = 0;	841	GvAV (PL_defgv) = coro->args; coro->args = 0;
723	GvSV (PL_errgv) = newSV (0);	842	GvSV (PL_errgv) = newSV (0);
724	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	843	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
725	PL_rs = newSVsv (GvSV (irsgv));	844	PL_rs = newSVsv (GvSV (irsgv));
726	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	845	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
727		846
728	{	847	{
729	dSP;	848	dSP;
730	LOGOP myop;	849	UNOP myop;
731		850
732	Zero (&myop, 1, LOGOP);	851	Zero (&myop, 1, UNOP);
733	myop.op_next = Nullop;	852	myop.op_next = Nullop;
734	myop.op_flags = OPf_WANT_VOID;	853	myop.op_flags = OPf_WANT_VOID;
735		854
736	PUSHMARK (SP);	855	PUSHMARK (SP);
737	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	856	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
741	SPAGAIN;	860	SPAGAIN;
742	}	861	}
743		862
744	/* this newly created coroutine might be run on an existing cctx which most	863	/* this newly created coroutine might be run on an existing cctx which most
745	* likely was suspended in set_stacklevel, called from entersub.	864	* likely was suspended in set_stacklevel, called from entersub.
746	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	865	* set_stacklevel doesn't do anything on return, but entersub does LEAVE,
747	* so we ENTER here for symmetry	866	* so we ENTER here for symmetry.
748	*/	867	*/
749	ENTER;	868	ENTERSUB_HEAD;
750	}	869	}
751		870
752	static void	871	static void
753	coro_destroy (pTHX_ struct coro *coro)	872	coro_destruct (pTHX_ struct coro *coro)
754	{	873	{
755	if (!IN_DESTRUCT)	874	if (!IN_DESTRUCT)
756	{	875	{
757	/* restore all saved variables and stuff */	876	/* restore all saved variables and stuff */
758	LEAVE_SCOPE (0);	877	LEAVE_SCOPE (0);
…		…
780	SvREFCNT_dec (PL_warnhook);	899	SvREFCNT_dec (PL_warnhook);
781		900
782	SvREFCNT_dec (coro->saved_deffh);	901	SvREFCNT_dec (coro->saved_deffh);
783	SvREFCNT_dec (coro->throw);	902	SvREFCNT_dec (coro->throw);
784		903
785	coro_destroy_stacks (aTHX);	904	coro_destruct_stacks (aTHX);
786	}	905	}
787		906
788	static void	907	INLINE void
789	free_coro_mortal (pTHX)	908	free_coro_mortal (pTHX)
790	{	909	{
791	if (expect_true (coro_mortal))	910	if (expect_true (coro_mortal))
792	{	911	{
793	SvREFCNT_dec (coro_mortal);	912	SvREFCNT_dec (coro_mortal);
…		…
827	: cx->blk_gimme == G_SCALAR ? bot + 1	946	: cx->blk_gimme == G_SCALAR ? bot + 1
828	: bot;	947	: bot;
829		948
830	av_extend (av, top - bot);	949	av_extend (av, top - bot);
831	while (bot < top)	950	while (bot < top)
832	av_push (av, SvREFCNT_inc (*bot++));	951	av_push (av, SvREFCNT_inc_NN (*bot++));
833		952
834	PL_runops = RUNOPS_DEFAULT;	953	PL_runops = RUNOPS_DEFAULT;
835	ENTER;	954	ENTER;
836	SAVETMPS;	955	SAVETMPS;
837	EXTEND (SP, 3);	956	EXTEND (SP, 3);
…		…
875	SAVETMPS;	994	SAVETMPS;
876	EXTEND (SP, 3);	995	EXTEND (SP, 3);
877	PUSHMARK (SP);	996	PUSHMARK (SP);
878	PUSHs (&PL_sv_yes);	997	PUSHs (&PL_sv_yes);
879	PUSHs (fullname);	998	PUSHs (fullname);
880	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	999	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
881	PUTBACK;	1000	PUTBACK;
882	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1001	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
883	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1002	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
884	SPAGAIN;	1003	SPAGAIN;
885	FREETMPS;	1004	FREETMPS;
…		…
917		1036
918	TAINT_NOT;	1037	TAINT_NOT;
919	return 0;	1038	return 0;
920	}	1039	}
921		1040
		1041	static void
		1042	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1043	{
		1044	ta->prev = (struct coro *)cctx;
		1045	ta->next = 0;
		1046	}
		1047
922	/* inject a fake call to Coro::State::_cctx_init into the execution */	1048	/* inject a fake call to Coro::State::_cctx_init into the execution */
923	/* _cctx_init should be careful, as it could be called at almost any time */	1049	/* _cctx_init should be careful, as it could be called at almost any time */
924	/* during execution of a perl program */	1050	/* during execution of a perl program */
		1051	/* also initialises PL_top_env */
925	static void NOINLINE	1052	static void NOINLINE
926	cctx_prepare (pTHX_ coro_cctx *cctx)	1053	cctx_prepare (pTHX_ coro_cctx *cctx)
927	{	1054	{
928	dSP;	1055	dSP;
929	LOGOP myop;	1056	UNOP myop;
930		1057
931	PL_top_env = &PL_start_env;	1058	PL_top_env = &PL_start_env;
932		1059
933	if (cctx->flags & CC_TRACE)	1060	if (cctx->flags & CC_TRACE)
934	PL_runops = runops_trace;	1061	PL_runops = runops_trace;
935		1062
936	Zero (&myop, 1, LOGOP);	1063	Zero (&myop, 1, UNOP);
937	myop.op_next = PL_op;	1064	myop.op_next = PL_op;
938	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1065	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
939		1066
940	PUSHMARK (SP);	1067	PUSHMARK (SP);
941	EXTEND (SP, 2);	1068	EXTEND (SP, 2);
942	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1069	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
943	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1070	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
944	PUTBACK;	1071	PUTBACK;
945	PL_op = (OP *)&myop;	1072	PL_op = (OP *)&myop;
946	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1073	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
947	SPAGAIN;	1074	SPAGAIN;
948	}	1075	}
949		1076
		1077	/* the tail of transfer: execute stuff we can only do after a transfer */
		1078	INLINE void
		1079	transfer_tail (pTHX)
		1080	{
		1081	struct coro *next = (struct coro *)transfer_next;
		1082	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1083	assert (("FATAL: transfer_next was zero in transfer_tail (please report)", next));
		1084
		1085	free_coro_mortal (aTHX);
		1086	UNLOCK;
		1087
		1088	if (expect_false (next->throw))
		1089	{
		1090	SV *exception = sv_2mortal (next->throw);
		1091
		1092	next->throw = 0;
		1093	sv_setsv (ERRSV, exception);
		1094	croak (0);
		1095	}
		1096	}
		1097
950	/*	1098	/*
951	* this is a _very_ stripped down perl interpreter ;)	1099	* this is a _very_ stripped down perl interpreter ;)
952	*/	1100	*/
953	static void	1101	static void
954	cctx_run (void *arg)	1102	cctx_run (void *arg)
955	{	1103	{
		1104	#ifdef USE_ITHREADS
		1105	# if CORO_PTHREAD
		1106	PERL_SET_CONTEXT (coro_thx);
		1107	# endif
		1108	#endif
		1109	{
956	dTHX;	1110	dTHX;
957		1111
958	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1112	/* entersub called ENTER, but we never 'returned', undo that here */
959	UNLOCK;	1113	ENTERSUB_TAIL;
960		1114
961	/* we now skip the entersub that lead to transfer() */	1115	/* we now skip the entersub that did lead to transfer() */
962	PL_op = PL_op->op_next;	1116	PL_op = PL_op->op_next;
963		1117
964	/* inject a fake subroutine call to cctx_init */	1118	/* inject a fake subroutine call to cctx_init */
965	cctx_prepare (aTHX_ (coro_cctx *)arg);	1119	cctx_prepare (aTHX_ (coro_cctx *)arg);
966		1120
		1121	/* cctx_run is the alternative tail of transfer() */
		1122	transfer_tail (aTHX);
		1123
967	/* somebody or something will hit me for both perl_run and PL_restartop */	1124	/* somebody or something will hit me for both perl_run and PL_restartop */
968	PL_restartop = PL_op;	1125	PL_restartop = PL_op;
969	perl_run (PL_curinterp);	1126	perl_run (PL_curinterp);
970		1127
971	/*	1128	/*
972	* If perl-run returns we assume exit() was being called or the coro	1129	* If perl-run returns we assume exit() was being called or the coro
973	* fell off the end, which seems to be the only valid (non-bug)	1130	* fell off the end, which seems to be the only valid (non-bug)
974	* reason for perl_run to return. We try to exit by jumping to the	1131	* reason for perl_run to return. We try to exit by jumping to the
975	* bootstrap-time "top" top_env, as we cannot restore the "main"	1132	* bootstrap-time "top" top_env, as we cannot restore the "main"
976	* coroutine as Coro has no such concept	1133	* coroutine as Coro has no such concept
977	*/	1134	*/
978	PL_top_env = main_top_env;	1135	PL_top_env = main_top_env;
979	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1136	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1137	}
980	}	1138	}
981		1139
982	static coro_cctx *	1140	static coro_cctx *
983	cctx_new ()	1141	cctx_new ()
984	{	1142	{
985	coro_cctx *cctx;	1143	coro_cctx *cctx;
		1144
		1145	++cctx_count;
		1146	New (0, cctx, 1, coro_cctx);
		1147
		1148	cctx->gen = cctx_gen;
		1149	cctx->flags = 0;
		1150	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1151
		1152	return cctx;
		1153	}
		1154
		1155	/* create a new cctx only suitable as source */
		1156	static coro_cctx *
		1157	cctx_new_empty ()
		1158	{
		1159	coro_cctx *cctx = cctx_new ();
		1160
		1161	cctx->sptr = 0;
		1162	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1163
		1164	return cctx;
		1165	}
		1166
		1167	/* create a new cctx suitable as destination/running a perl interpreter */
		1168	static coro_cctx *
		1169	cctx_new_run ()
		1170	{
		1171	coro_cctx *cctx = cctx_new ();
986	void *stack_start;	1172	void *stack_start;
987	size_t stack_size;	1173	size_t stack_size;
988		1174
989	++cctx_count;
990
991	Newz (0, cctx, 1, coro_cctx);
992
993	#if HAVE_MMAP	1175	#if HAVE_MMAP
994	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1176	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
995	/* mmap supposedly does allocate-on-write for us */	1177	/* mmap supposedly does allocate-on-write for us */
996	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1178	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
997		1179
998	if (cctx->sptr != (void *)-1)	1180	if (cctx->sptr != (void *)-1)
999	{	1181	{
1000	# if CORO_STACKGUARD	1182	#if CORO_STACKGUARD
1001	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1183	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
1002	# endif	1184	#endif
1003	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1185	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
1004	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1186	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
1005	cctx->flags |= CC_MAPPED;	1187	cctx->flags |= CC_MAPPED;
1006	}	1188	}
1007	else	1189	else
1008	#endif	1190	#endif
1009	{	1191	{
1010	cctx->ssize = coro_stacksize * (long)sizeof (long);	1192	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1011	New (0, cctx->sptr, coro_stacksize, long);	1193	New (0, cctx->sptr, cctx_stacksize, long);
1012		1194
1013	if (!cctx->sptr)	1195	if (!cctx->sptr)
1014	{	1196	{
1015	perror ("FATAL: unable to allocate stack for coroutine");	1197	perror ("FATAL: unable to allocate stack for coroutine");
1016	_exit (EXIT_FAILURE);	1198	_exit (EXIT_FAILURE);
…		…
1018		1200
1019	stack_start = cctx->sptr;	1201	stack_start = cctx->sptr;
1020	stack_size = cctx->ssize;	1202	stack_size = cctx->ssize;
1021	}	1203	}
1022		1204
1023	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1205	#if CORO_USE_VALGRIND
		1206	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1207	#endif
		1208
1024	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1209	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
1025		1210
1026	return cctx;	1211	return cctx;
1027	}	1212	}
1028		1213
…		…
1031	{	1216	{
1032	if (!cctx)	1217	if (!cctx)
1033	return;	1218	return;
1034		1219
1035	--cctx_count;	1220	--cctx_count;
		1221	coro_destroy (&cctx->cctx);
1036		1222
		1223	/* coro_transfer creates new, empty cctx's */
		1224	if (cctx->sptr)
		1225	{
1037	#if CORO_USE_VALGRIND	1226	#if CORO_USE_VALGRIND
1038	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1227	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1039	#endif	1228	#endif
1040		1229
1041	#if HAVE_MMAP	1230	#if HAVE_MMAP
1042	if (cctx->flags & CC_MAPPED)	1231	if (cctx->flags & CC_MAPPED)
1043	munmap (cctx->sptr, cctx->ssize);	1232	munmap (cctx->sptr, cctx->ssize);
1044	else	1233	else
1045	#endif	1234	#endif
1046	Safefree (cctx->sptr);	1235	Safefree (cctx->sptr);
		1236	}
1047		1237
1048	Safefree (cctx);	1238	Safefree (cctx);
1049	}	1239	}
1050		1240
1051	/* wether this cctx should be destructed */	1241	/* wether this cctx should be destructed */
1052	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1242	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1053		1243
1054	static coro_cctx *	1244	static coro_cctx *
1055	cctx_get (pTHX)	1245	cctx_get (pTHX)
1056	{	1246	{
1057	while (expect_true (cctx_first))	1247	while (expect_true (cctx_first))
…		…
1064	return cctx;	1254	return cctx;
1065		1255
1066	cctx_destroy (cctx);	1256	cctx_destroy (cctx);
1067	}	1257	}
1068		1258
1069	return cctx_new ();	1259	return cctx_new_run ();
1070	}	1260	}
1071		1261
1072	static void	1262	static void
1073	cctx_put (coro_cctx *cctx)	1263	cctx_put (coro_cctx *cctx)
1074	{	1264	{
		1265	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1266
1075	/* free another cctx if overlimit */	1267	/* free another cctx if overlimit */
1076	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1268	if (expect_false (cctx_idle >= cctx_max_idle))
1077	{	1269	{
1078	coro_cctx *first = cctx_first;	1270	coro_cctx *first = cctx_first;
1079	cctx_first = first->next;	1271	cctx_first = first->next;
1080	--cctx_idle;	1272	--cctx_idle;
1081		1273
…		…
1101	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1293	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1102		1294
1103	if (expect_false (next->flags & CF_DESTROYED))	1295	if (expect_false (next->flags & CF_DESTROYED))
1104	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1296	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1105		1297
1106	if (
1107	#if PERL_VERSION_ATLEAST (5,9,0)	1298	#if !PERL_VERSION_ATLEAST (5,10,0)
1108	expect_false (PL_parser)
1109	#else
1110	expect_false (PL_lex_state != LEX_NOTPARSING)	1299	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1111	#endif
1112	)
1113	croak ("Coro::State::transfer called while parsing, but this is not supported");	1300	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1301	#endif
1114	}	1302	}
1115	}	1303	}
1116		1304
1117	/* always use the TRANSFER macro */	1305	/* always use the TRANSFER macro */
1118	static void NOINLINE	1306	static void NOINLINE
1119	transfer (pTHX_ struct coro *prev, struct coro *next)	1307	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1120	{	1308	{
1121	dSTACKLEVEL;	1309	dSTACKLEVEL;
1122		1310
1123	/* sometimes transfer is only called to set idle_sp */	1311	/* sometimes transfer is only called to set idle_sp */
1124	if (expect_false (!next))	1312	if (expect_false (!next))
…		…
1130	{	1318	{
1131	coro_cctx *prev__cctx;	1319	coro_cctx *prev__cctx;
1132		1320
1133	if (expect_false (prev->flags & CF_NEW))	1321	if (expect_false (prev->flags & CF_NEW))
1134	{	1322	{
1135	/* create a new empty context */	1323	/* create a new empty/source context */
1136	Newz (0, prev->cctx, 1, coro_cctx);	1324	prev->cctx = cctx_new_empty ();
1137	prev->flags &= ~CF_NEW;	1325	prev->flags &= ~CF_NEW;
1138	prev->flags |= CF_RUNNING;	1326	prev->flags |= CF_RUNNING;
1139	}	1327	}
1140		1328
1141	prev->flags &= ~CF_RUNNING;	1329	prev->flags &= ~CF_RUNNING;
…		…
1156	else	1344	else
1157	load_perl (aTHX_ next);	1345	load_perl (aTHX_ next);
1158		1346
1159	prev__cctx = prev->cctx;	1347	prev__cctx = prev->cctx;
1160		1348
1161	/* possibly "free" the cctx */	1349	/* possibly untie and reuse the cctx */
1162	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1350	if (expect_true (
		1351	prev__cctx->idle_sp == STACKLEVEL
		1352	&& !(prev__cctx->flags & CC_TRACE)
		1353	&& !force_cctx
		1354	))
1163	{	1355	{
1164	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1356	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1165	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1357	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1166		1358
1167	prev->cctx = 0;	1359	prev->cctx = 0;
1168		1360
1169	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1361	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1170	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1362	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1177		1369
1178	++next->usecount;	1370	++next->usecount;
1179		1371
1180	if (expect_true (!next->cctx))	1372	if (expect_true (!next->cctx))
1181	next->cctx = cctx_get (aTHX);	1373	next->cctx = cctx_get (aTHX);
		1374
		1375	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1376	transfer_next = next;
1182		1377
1183	if (expect_false (prev__cctx != next->cctx))	1378	if (expect_false (prev__cctx != next->cctx))
1184	{	1379	{
1185	prev__cctx->top_env = PL_top_env;	1380	prev__cctx->top_env = PL_top_env;
1186	PL_top_env = next->cctx->top_env;	1381	PL_top_env = next->cctx->top_env;
1187	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1382	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1188	}	1383	}
1189		1384
1190	free_coro_mortal (aTHX);	1385	transfer_tail (aTHX);
1191	UNLOCK;
1192
1193	if (expect_false (prev->throw || next->throw))
1194	{
1195	struct coro *coro = SvSTATE (coro_current);
1196
1197	if (coro->throw)
1198	{
1199	SV *exception = coro->throw;
1200	coro->throw = 0;
1201	sv_setsv (ERRSV, exception);
1202	croak (0);
1203	}
1204	}
1205	}	1386	}
1206	}	1387	}
1207		1388
1208	struct transfer_args
1209	{
1210	struct coro *prev, *next;
1211	};
1212
1213	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1389	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1214	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1390	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1215		1391
1216	/** high level stuff ********************************************************/	1392	/** high level stuff ********************************************************/
1217		1393
1218	static int	1394	static int
…		…
1242	croak ("FATAL: tried to destroy currently running coroutine");	1418	croak ("FATAL: tried to destroy currently running coroutine");
1243		1419
1244	save_perl (aTHX_ &temp);	1420	save_perl (aTHX_ &temp);
1245	load_perl (aTHX_ coro);	1421	load_perl (aTHX_ coro);
1246		1422
1247	coro_destroy (aTHX_ coro);	1423	coro_destruct (aTHX_ coro);
1248		1424
1249	load_perl (aTHX_ &temp);	1425	load_perl (aTHX_ &temp);
1250		1426
1251	coro->slot = 0;	1427	coro->slot = 0;
1252	}	1428	}
…		…
1312	{	1488	{
1313	dTHX;	1489	dTHX;
1314	struct transfer_args ta;	1490	struct transfer_args ta;
1315		1491
1316	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1492	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1317	TRANSFER (ta);	1493	TRANSFER (ta, 1);
1318	}	1494	}
1319		1495
1320	/** Coro ********************************************************************/	1496	/** Coro ********************************************************************/
1321		1497
1322	static void	1498	static void
…		…
1324	{	1500	{
1325	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1501	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1326	}	1502	}
1327		1503
1328	static SV *	1504	static SV *
1329	coro_deq (pTHX_ int min_prio)	1505	coro_deq (pTHX)
1330	{	1506	{
1331	int prio = PRIO_MAX - PRIO_MIN;	1507	int prio;
1332		1508
1333	min_prio -= PRIO_MIN;
1334	if (min_prio < 0)
1335	min_prio = 0;
1336
1337	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1509	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1338	if (AvFILLp (coro_ready [prio]) >= 0)	1510	if (AvFILLp (coro_ready [prio]) >= 0)
1339	return av_shift (coro_ready [prio]);	1511	return av_shift (coro_ready [prio]);
1340		1512
1341	return 0;	1513	return 0;
1342	}	1514	}
…		…
1344	static int	1516	static int
1345	api_ready (SV *coro_sv)	1517	api_ready (SV *coro_sv)
1346	{	1518	{
1347	dTHX;	1519	dTHX;
1348	struct coro *coro;	1520	struct coro *coro;
		1521	SV *sv_hook;
		1522	void (*xs_hook)(void);
1349		1523
1350	if (SvROK (coro_sv))	1524	if (SvROK (coro_sv))
1351	coro_sv = SvRV (coro_sv);	1525	coro_sv = SvRV (coro_sv);
1352		1526
1353	coro = SvSTATE (coro_sv);	1527	coro = SvSTATE (coro_sv);
…		…
1356	return 0;	1530	return 0;
1357		1531
1358	coro->flags |= CF_READY;	1532	coro->flags |= CF_READY;
1359		1533
1360	LOCK;	1534	LOCK;
		1535
		1536	sv_hook = coro_nready ? 0 : coro_readyhook;
		1537	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1538
1361	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1539	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1362	++coro_nready;	1540	++coro_nready;
		1541
1363	UNLOCK;	1542	UNLOCK;
		1543
		1544	if (sv_hook)
		1545	{
		1546	dSP;
		1547
		1548	ENTER;
		1549	SAVETMPS;
		1550
		1551	PUSHMARK (SP);
		1552	PUTBACK;
		1553	call_sv (sv_hook, G_DISCARD);
		1554	SPAGAIN;
		1555
		1556	FREETMPS;
		1557	LEAVE;
		1558	}
		1559
		1560	if (xs_hook)
		1561	xs_hook ();
1364		1562
1365	return 1;	1563	return 1;
1366	}	1564	}
1367		1565
1368	static int	1566	static int
1369	api_is_ready (SV *coro_sv)	1567	api_is_ready (SV *coro_sv)
1370	{	1568	{
1371	dTHX;	1569	dTHX;
		1570
1372	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1571	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1373	}	1572	}
1374		1573
1375	static void	1574	INLINE void
1376	prepare_schedule (pTHX_ struct transfer_args *ta)	1575	prepare_schedule (pTHX_ struct transfer_args *ta)
1377	{	1576	{
1378	SV *prev_sv, *next_sv;	1577	SV *prev_sv, *next_sv;
1379		1578
1380	for (;;)	1579	for (;;)
1381	{	1580	{
1382	LOCK;	1581	LOCK;
1383	next_sv = coro_deq (aTHX_ PRIO_MIN);	1582	next_sv = coro_deq (aTHX);
1384		1583
1385	/* nothing to schedule: call the idle handler */	1584	/* nothing to schedule: call the idle handler */
1386	if (expect_false (!next_sv))	1585	if (expect_false (!next_sv))
1387	{	1586	{
1388	dSP;	1587	dSP;
…		…
1392	SAVETMPS;	1591	SAVETMPS;
1393		1592
1394	PUSHMARK (SP);	1593	PUSHMARK (SP);
1395	PUTBACK;	1594	PUTBACK;
1396	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1595	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1596	SPAGAIN;
1397		1597
1398	FREETMPS;	1598	FREETMPS;
1399	LEAVE;	1599	LEAVE;
1400	continue;	1600	continue;
1401	}	1601	}
…		…
1405	/* cannot transfer to destroyed coros, skip and look for next */	1605	/* cannot transfer to destroyed coros, skip and look for next */
1406	if (expect_false (ta->next->flags & CF_DESTROYED))	1606	if (expect_false (ta->next->flags & CF_DESTROYED))
1407	{	1607	{
1408	UNLOCK;	1608	UNLOCK;
1409	SvREFCNT_dec (next_sv);	1609	SvREFCNT_dec (next_sv);
1410	/* coro_nready is already taken care of by destroy */	1610	/* coro_nready has already been taken care of by destroy */
1411	continue;	1611	continue;
1412	}	1612	}
1413		1613
1414	--coro_nready;	1614	--coro_nready;
1415	UNLOCK;	1615	UNLOCK;
…		…
1418		1618
1419	/* free this only after the transfer */	1619	/* free this only after the transfer */
1420	prev_sv = SvRV (coro_current);	1620	prev_sv = SvRV (coro_current);
1421	ta->prev = SvSTATE (prev_sv);	1621	ta->prev = SvSTATE (prev_sv);
1422	TRANSFER_CHECK (*ta);	1622	TRANSFER_CHECK (*ta);
1423	assert (ta->next->flags & CF_READY);	1623	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1424	ta->next->flags &= ~CF_READY;	1624	ta->next->flags &= ~CF_READY;
1425	SvRV_set (coro_current, next_sv);	1625	SvRV_set (coro_current, next_sv);
1426		1626
1427	LOCK;	1627	LOCK;
1428	free_coro_mortal (aTHX);	1628	free_coro_mortal (aTHX);
1429	coro_mortal = prev_sv;	1629	coro_mortal = prev_sv;
1430	UNLOCK;	1630	UNLOCK;
1431	}	1631	}
1432		1632
1433	static void	1633	INLINE void
1434	prepare_cede (pTHX_ struct transfer_args *ta)	1634	prepare_cede (pTHX_ struct transfer_args *ta)
1435	{	1635	{
1436	api_ready (coro_current);	1636	api_ready (coro_current);
1437	prepare_schedule (aTHX_ ta);	1637	prepare_schedule (aTHX_ ta);
1438	}	1638	}
…		…
1456	{	1656	{
1457	dTHX;	1657	dTHX;
1458	struct transfer_args ta;	1658	struct transfer_args ta;
1459		1659
1460	prepare_schedule (aTHX_ &ta);	1660	prepare_schedule (aTHX_ &ta);
1461	TRANSFER (ta);	1661	TRANSFER (ta, 1);
1462	}	1662	}
1463		1663
1464	static int	1664	static int
1465	api_cede (void)	1665	api_cede (void)
1466	{	1666	{
…		…
1469		1669
1470	prepare_cede (aTHX_ &ta);	1670	prepare_cede (aTHX_ &ta);
1471		1671
1472	if (expect_true (ta.prev != ta.next))	1672	if (expect_true (ta.prev != ta.next))
1473	{	1673	{
1474	TRANSFER (ta);	1674	TRANSFER (ta, 1);
1475	return 1;	1675	return 1;
1476	}	1676	}
1477	else	1677	else
1478	return 0;	1678	return 0;
1479	}	1679	}
…		…
1484	dTHX;	1684	dTHX;
1485	struct transfer_args ta;	1685	struct transfer_args ta;
1486		1686
1487	if (prepare_cede_notself (aTHX_ &ta))	1687	if (prepare_cede_notself (aTHX_ &ta))
1488	{	1688	{
1489	TRANSFER (ta);	1689	TRANSFER (ta, 1);
1490	return 1;	1690	return 1;
1491	}	1691	}
1492	else	1692	else
1493	return 0;	1693	return 0;
1494	}	1694	}
…		…
1500	struct coro *coro = SvSTATE (coro_sv);	1700	struct coro *coro = SvSTATE (coro_sv);
1501		1701
1502	if (flags & CC_TRACE)	1702	if (flags & CC_TRACE)
1503	{	1703	{
1504	if (!coro->cctx)	1704	if (!coro->cctx)
1505	coro->cctx = cctx_new ();	1705	coro->cctx = cctx_new_run ();
1506	else if (!(coro->cctx->flags & CC_TRACE))	1706	else if (!(coro->cctx->flags & CC_TRACE))
1507	croak ("cannot enable tracing on coroutine with custom stack");	1707	croak ("cannot enable tracing on coroutine with custom stack");
1508		1708
1509	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1709	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1510	}	1710	}
…		…
1517	else	1717	else
1518	coro->slot->runops = RUNOPS_DEFAULT;	1718	coro->slot->runops = RUNOPS_DEFAULT;
1519	}	1719	}
1520	}	1720	}
1521		1721
		1722	#if 0
		1723	static int
		1724	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1725	{
		1726	AV *padlist;
		1727	AV *av = (AV *)mg->mg_obj;
		1728
		1729	abort ();
		1730
		1731	return 0;
		1732	}
		1733
		1734	static MGVTBL coro_gensub_vtbl = {
		1735	0, 0, 0, 0,
		1736	coro_gensub_free
		1737	};
		1738	#endif
		1739
		1740	/*****************************************************************************/
		1741	/* PerlIO::cede */
		1742
		1743	typedef struct
		1744	{
		1745	PerlIOBuf base;
		1746	NV next, every;
		1747	} PerlIOCede;
		1748
		1749	static IV
		1750	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1751	{
		1752	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1753
		1754	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1755	self->next = nvtime () + self->every;
		1756
		1757	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1758	}
		1759
		1760	static SV *
		1761	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1762	{
		1763	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1764
		1765	return newSVnv (self->every);
		1766	}
		1767
		1768	static IV
		1769	PerlIOCede_flush (pTHX_ PerlIO *f)
		1770	{
		1771	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1772	double now = nvtime ();
		1773
		1774	if (now >= self->next)
		1775	{
		1776	api_cede ();
		1777	self->next = now + self->every;
		1778	}
		1779
		1780	return PerlIOBuf_flush (aTHX_ f);
		1781	}
		1782
		1783	static PerlIO_funcs PerlIO_cede =
		1784	{
		1785	sizeof(PerlIO_funcs),
		1786	"cede",
		1787	sizeof(PerlIOCede),
		1788	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1789	PerlIOCede_pushed,
		1790	PerlIOBuf_popped,
		1791	PerlIOBuf_open,
		1792	PerlIOBase_binmode,
		1793	PerlIOCede_getarg,
		1794	PerlIOBase_fileno,
		1795	PerlIOBuf_dup,
		1796	PerlIOBuf_read,
		1797	PerlIOBuf_unread,
		1798	PerlIOBuf_write,
		1799	PerlIOBuf_seek,
		1800	PerlIOBuf_tell,
		1801	PerlIOBuf_close,
		1802	PerlIOCede_flush,
		1803	PerlIOBuf_fill,
		1804	PerlIOBase_eof,
		1805	PerlIOBase_error,
		1806	PerlIOBase_clearerr,
		1807	PerlIOBase_setlinebuf,
		1808	PerlIOBuf_get_base,
		1809	PerlIOBuf_bufsiz,
		1810	PerlIOBuf_get_ptr,
		1811	PerlIOBuf_get_cnt,
		1812	PerlIOBuf_set_ptrcnt,
		1813	};
		1814
		1815
1522	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1816	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1523		1817
1524	PROTOTYPES: DISABLE	1818	PROTOTYPES: DISABLE
1525		1819
1526	BOOT:	1820	BOOT:
1527	{	1821	{
1528	#ifdef USE_ITHREADS	1822	#ifdef USE_ITHREADS
1529	MUTEX_INIT (&coro_mutex);	1823	MUTEX_INIT (&coro_lock);
		1824	# if CORO_PTHREAD
		1825	coro_thx = PERL_GET_CONTEXT;
		1826	# endif
1530	#endif	1827	#endif
1531	BOOT_PAGESIZE;	1828	BOOT_PAGESIZE;
1532		1829
1533	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1830	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1534	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1831	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1535		1832
1536	orig_sigelem_get = PL_vtbl_sigelem.svt_get;	1833	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
1537	PL_vtbl_sigelem.svt_get = coro_sigelem_get;	1834	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1835	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
1538		1836
1539	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);	1837	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1540	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));	1838	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1541	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));	1839	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1542		1840
…		…
1551	main_top_env = PL_top_env;	1849	main_top_env = PL_top_env;
1552		1850
1553	while (main_top_env->je_prev)	1851	while (main_top_env->je_prev)
1554	main_top_env = main_top_env->je_prev;	1852	main_top_env = main_top_env->je_prev;
1555		1853
1556	coroapi.ver = CORO_API_VERSION;	1854	coroapi.ver = CORO_API_VERSION;
1557	coroapi.rev = CORO_API_REVISION;	1855	coroapi.rev = CORO_API_REVISION;
1558	coroapi.transfer = api_transfer;	1856	coroapi.transfer = api_transfer;
		1857
		1858	{
		1859	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1860
		1861	if (!svp) croak ("Time::HiRes is required");
		1862	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1863
		1864	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1865	}
1559		1866
1560	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1867	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1561	}	1868	}
1562		1869
1563	SV *	1870	SV *
…		…
1601	Coro::cede_notself = 4	1908	Coro::cede_notself = 4
1602	CODE:	1909	CODE:
1603	{	1910	{
1604	struct transfer_args ta;	1911	struct transfer_args ta;
1605		1912
		1913	PUTBACK;
1606	switch (ix)	1914	switch (ix)
1607	{	1915	{
1608	case 0:	1916	case 0:
1609	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1917	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1610	ta.next = 0;
1611	break;	1918	break;
1612		1919
1613	case 1:	1920	case 1:
1614	if (items != 2)	1921	if (items != 2)
1615	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1922	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1616		1923
1617	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1924	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1618	break;	1925	break;
1619		1926
1620	case 2:	1927	case 2:
…		…
1629	if (!prepare_cede_notself (aTHX_ &ta))	1936	if (!prepare_cede_notself (aTHX_ &ta))
1630	XSRETURN_EMPTY;	1937	XSRETURN_EMPTY;
1631		1938
1632	break;	1939	break;
1633	}	1940	}
		1941	SPAGAIN;
1634		1942
1635	BARRIER;	1943	BARRIER;
1636	PUTBACK;	1944	PUTBACK;
1637	TRANSFER (ta);	1945	TRANSFER (ta, 0);
1638	SPAGAIN; /* might be the sp of a different coroutine now */	1946	SPAGAIN; /* might be the sp of a different coroutine now */
1639	/* be extra careful not to ever do anything after TRANSFER */	1947	/* be extra careful not to ever do anything after TRANSFER */
1640	}	1948	}
1641		1949
1642	bool	1950	bool
…		…
1645	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1953	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1646	OUTPUT:	1954	OUTPUT:
1647	RETVAL	1955	RETVAL
1648		1956
1649	void	1957	void
1650	_exit (code)	1958	_exit (int code)
1651	int code
1652	PROTOTYPE: $	1959	PROTOTYPE: $
1653	CODE:	1960	CODE:
1654	_exit (code);	1961	_exit (code);
1655		1962
1656	int	1963	int
1657	cctx_stacksize (int new_stacksize = 0)	1964	cctx_stacksize (int new_stacksize = 0)
1658	CODE:	1965	CODE:
1659	RETVAL = coro_stacksize;	1966	RETVAL = cctx_stacksize;
1660	if (new_stacksize)	1967	if (new_stacksize)
		1968	{
1661	coro_stacksize = new_stacksize;	1969	cctx_stacksize = new_stacksize;
		1970	++cctx_gen;
		1971	}
		1972	OUTPUT:
		1973	RETVAL
		1974
		1975	int
		1976	cctx_max_idle (int max_idle = 0)
		1977	CODE:
		1978	RETVAL = cctx_max_idle;
		1979	if (max_idle > 1)
		1980	cctx_max_idle = max_idle;
1662	OUTPUT:	1981	OUTPUT:
1663	RETVAL	1982	RETVAL
1664		1983
1665	int	1984	int
1666	cctx_count ()	1985	cctx_count ()
…		…
1690	call (Coro::State coro, SV *coderef)	2009	call (Coro::State coro, SV *coderef)
1691	ALIAS:	2010	ALIAS:
1692	eval = 1	2011	eval = 1
1693	CODE:	2012	CODE:
1694	{	2013	{
1695	if (coro->mainstack)	2014	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1696	{	2015	{
1697	struct coro temp;	2016	struct coro temp;
1698		2017
1699	if (!(coro->flags & CF_RUNNING))	2018	if (!(coro->flags & CF_RUNNING))
1700	{	2019	{
		2020	PUTBACK;
1701	save_perl (aTHX_ &temp);	2021	save_perl (aTHX_ &temp);
1702	load_perl (aTHX_ coro);	2022	load_perl (aTHX_ coro);
1703	}	2023	}
1704		2024
1705	{	2025	{
…		…
1724		2044
1725	if (!(coro->flags & CF_RUNNING))	2045	if (!(coro->flags & CF_RUNNING))
1726	{	2046	{
1727	save_perl (aTHX_ coro);	2047	save_perl (aTHX_ coro);
1728	load_perl (aTHX_ &temp);	2048	load_perl (aTHX_ &temp);
		2049	SPAGAIN;
1729	}	2050	}
1730	}	2051	}
1731	}	2052	}
1732		2053
1733	SV *	2054	SV *
…		…
1742	RETVAL = boolSV (coro->flags & ix);	2063	RETVAL = boolSV (coro->flags & ix);
1743	OUTPUT:	2064	OUTPUT:
1744	RETVAL	2065	RETVAL
1745		2066
1746	void	2067	void
		2068	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2069	PROTOTYPE: $;$
		2070	CODE:
		2071	SvREFCNT_dec (self->throw);
		2072	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2073
		2074	void
1747	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2075	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1748		2076
1749	SV *	2077	SV *
1750	has_stack (Coro::State coro)	2078	has_cctx (Coro::State coro)
1751	PROTOTYPE: $	2079	PROTOTYPE: $
1752	CODE:	2080	CODE:
1753	RETVAL = boolSV (!!coro->cctx);	2081	RETVAL = boolSV (!!coro->cctx);
1754	OUTPUT:	2082	OUTPUT:
1755	RETVAL	2083	RETVAL
…		…
1760	CODE:	2088	CODE:
1761	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2089	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1762	OUTPUT:	2090	OUTPUT:
1763	RETVAL	2091	RETVAL
1764		2092
1765	IV	2093	UV
1766	rss (Coro::State coro)	2094	rss (Coro::State coro)
1767	PROTOTYPE: $	2095	PROTOTYPE: $
1768	ALIAS:	2096	ALIAS:
1769	usecount = 1	2097	usecount = 1
1770	CODE:	2098	CODE:
…		…
1774	case 1: RETVAL = coro->usecount; break;	2102	case 1: RETVAL = coro->usecount; break;
1775	}	2103	}
1776	OUTPUT:	2104	OUTPUT:
1777	RETVAL	2105	RETVAL
1778		2106
		2107	void
		2108	force_cctx ()
		2109	CODE:
		2110	struct coro *coro = SvSTATE (coro_current);
		2111	coro->cctx->idle_sp = 0;
		2112
		2113	void
		2114	swap_defsv (Coro::State self)
		2115	PROTOTYPE: $
		2116	ALIAS:
		2117	swap_defav = 1
		2118	CODE:
		2119	if (!self->slot)
		2120	croak ("cannot swap state with coroutine that has no saved state");
		2121	else
		2122	{
		2123	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2124	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2125
		2126	SV *tmp = *src; *src = *dst; *dst = tmp;
		2127	}
1779		2128
1780	MODULE = Coro::State PACKAGE = Coro	2129	MODULE = Coro::State PACKAGE = Coro
1781		2130
1782	BOOT:	2131	BOOT:
1783	{	2132	{
1784	int i;	2133	int i;
1785		2134
		2135	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1786	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	2136	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
1787	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	2137	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1788	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
1789		2138
1790	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);	2139	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1791	SvREADONLY_on (coro_current);	2140	SvREADONLY_on (coro_current);
1792		2141
1793	coro_stash = gv_stashpv ("Coro", TRUE);	2142	coro_stash = gv_stashpv ("Coro", TRUE);
…		…
1801		2150
1802	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2151	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1803	coro_ready[i] = newAV ();	2152	coro_ready[i] = newAV ();
1804		2153
1805	{	2154	{
1806	SV *sv = perl_get_sv ("Coro::API", TRUE);	2155	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1807	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1808		2156
1809	coroapi.schedule = api_schedule;	2157	coroapi.schedule = api_schedule;
1810	coroapi.cede = api_cede;	2158	coroapi.cede = api_cede;
1811	coroapi.cede_notself = api_cede_notself;	2159	coroapi.cede_notself = api_cede_notself;
1812	coroapi.ready = api_ready;	2160	coroapi.ready = api_ready;
…		…
1823	void	2171	void
1824	_set_current (SV *current)	2172	_set_current (SV *current)
1825	PROTOTYPE: $	2173	PROTOTYPE: $
1826	CODE:	2174	CODE:
1827	SvREFCNT_dec (SvRV (coro_current));	2175	SvREFCNT_dec (SvRV (coro_current));
1828	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2176	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2177
		2178	void
		2179	_set_readyhook (SV *hook)
		2180	PROTOTYPE: $
		2181	CODE:
		2182	LOCK;
		2183	SvREFCNT_dec (coro_readyhook);
		2184	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2185	UNLOCK;
1829		2186
1830	int	2187	int
1831	prio (Coro::State coro, int newprio = 0)	2188	prio (Coro::State coro, int newprio = 0)
1832	ALIAS:	2189	ALIAS:
1833	nice = 1	2190	nice = 1
…		…
1863	CODE:	2220	CODE:
1864	RETVAL = coro_nready;	2221	RETVAL = coro_nready;
1865	OUTPUT:	2222	OUTPUT:
1866	RETVAL	2223	RETVAL
1867		2224
1868	void
1869	throw (Coro::State self, SV *throw = &PL_sv_undef)
1870	PROTOTYPE: $;$
1871	CODE:
1872	SvREFCNT_dec (self->throw);
1873	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1874
1875	# for async_pool speedup	2225	# for async_pool speedup
1876	void	2226	void
1877	_pool_1 (SV *cb)	2227	_pool_1 (SV *cb)
1878	CODE:	2228	CODE:
1879	{	2229	{
…		…
1883	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2233	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1884	AV *invoke_av;	2234	AV *invoke_av;
1885	int i, len;	2235	int i, len;
1886		2236
1887	if (!invoke)	2237	if (!invoke)
		2238	{
		2239	SV *old = PL_diehook;
		2240	PL_diehook = 0;
		2241	SvREFCNT_dec (old);
1888	croak ("\3async_pool terminate\2\n");	2242	croak ("\3async_pool terminate\2\n");
		2243	}
1889		2244
1890	SvREFCNT_dec (coro->saved_deffh);	2245	SvREFCNT_dec (coro->saved_deffh);
1891	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2246	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1892		2247
1893	hv_store (hv, "desc", sizeof ("desc") - 1,	2248	hv_store (hv, "desc", sizeof ("desc") - 1,
1894	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2249	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1895		2250
1896	invoke_av = (AV *)SvRV (invoke);	2251	invoke_av = (AV *)SvRV (invoke);
…		…
1900		2255
1901	if (len > 0)	2256	if (len > 0)
1902	{	2257	{
1903	av_fill (defav, len - 1);	2258	av_fill (defav, len - 1);
1904	for (i = 0; i < len; ++i)	2259	for (i = 0; i < len; ++i)
1905	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2260	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1906	}	2261	}
1907		2262
1908	SvREFCNT_dec (invoke);	2263	SvREFCNT_dec (invoke);
1909	}	2264	}
1910		2265
…		…
1917	sv_setsv (cb, &PL_sv_undef);	2272	sv_setsv (cb, &PL_sv_undef);
1918		2273
1919	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2274	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1920	coro->saved_deffh = 0;	2275	coro->saved_deffh = 0;
1921		2276
1922	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2277	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1923	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2278	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2279	{
		2280	SV *old = PL_diehook;
		2281	PL_diehook = 0;
		2282	SvREFCNT_dec (old);
1924	croak ("\3async_pool terminate\2\n");	2283	croak ("\3async_pool terminate\2\n");
		2284	}
1925		2285
1926	av_clear (GvAV (PL_defgv));	2286	av_clear (GvAV (PL_defgv));
1927	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2287	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1928	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2288	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1929		2289
…		…
1933	api_trace (coro_current, 0);	2293	api_trace (coro_current, 0);
1934		2294
1935	av_push (av_async_pool, newSVsv (coro_current));	2295	av_push (av_async_pool, newSVsv (coro_current));
1936	}	2296	}
1937		2297
		2298	#if 0
		2299
		2300	void
		2301	_generator_call (...)
		2302	PROTOTYPE: @
		2303	PPCODE:
		2304	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2305	xxxx
		2306	abort ();
		2307
		2308	SV *
		2309	gensub (SV *sub, ...)
		2310	PROTOTYPE: &;@
		2311	CODE:
		2312	{
		2313	struct coro *coro;
		2314	MAGIC *mg;
		2315	CV *xcv;
		2316	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2317	int i;
		2318
		2319	CvGV (ncv) = CvGV (cv);
		2320	CvFILE (ncv) = CvFILE (cv);
		2321
		2322	Newz (0, coro, 1, struct coro);
		2323	coro->args = newAV ();
		2324	coro->flags = CF_NEW;
		2325
		2326	av_extend (coro->args, items - 1);
		2327	for (i = 1; i < items; i++)
		2328	av_push (coro->args, newSVsv (ST (i)));
		2329
		2330	CvISXSUB_on (ncv);
		2331	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2332
		2333	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2334
		2335	CvXSUB (ncv) = CvXSUB (xcv);
		2336	CvANON_on (ncv);
		2337
		2338	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2339	RETVAL = newRV_noinc ((SV *)ncv);
		2340	}
		2341	OUTPUT:
		2342	RETVAL
		2343
		2344	#endif
		2345
1938		2346
1939	MODULE = Coro::State PACKAGE = Coro::AIO	2347	MODULE = Coro::State PACKAGE = Coro::AIO
1940		2348
1941	SV *	2349	void
1942	_get_state ()	2350	_get_state (SV *self)
1943	CODE:	2351	PPCODE:
1944	{	2352	{
1945	struct io_state *data;	2353	AV *defav = GvAV (PL_defgv);
1946		2354	AV *av = newAV ();
		2355	int i;
1947	RETVAL = newSV (sizeof (struct io_state));	2356	SV *data_sv = newSV (sizeof (struct io_state));
1948	data = (struct io_state *)SvPVX (RETVAL);	2357	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1949	SvCUR_set (RETVAL, sizeof (struct io_state));	2358	SvCUR_set (data_sv, sizeof (struct io_state));
1950	SvPOK_only (RETVAL);	2359	SvPOK_only (data_sv);
1951		2360
1952	data->errorno = errno;	2361	data->errorno = errno;
1953	data->laststype = PL_laststype;	2362	data->laststype = PL_laststype;
1954	data->laststatval = PL_laststatval;	2363	data->laststatval = PL_laststatval;
1955	data->statcache = PL_statcache;	2364	data->statcache = PL_statcache;
		2365
		2366	av_extend (av, AvFILLp (defav) + 1 + 1);
		2367
		2368	for (i = 0; i <= AvFILLp (defav); ++i)
		2369	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2370
		2371	av_push (av, data_sv);
		2372
		2373	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2374
		2375	api_ready (self);
1956	}	2376	}
1957	OUTPUT:
1958	RETVAL
1959		2377
1960	void	2378	void
1961	_set_state (char *data_)	2379	_set_state (SV *state)
1962	PROTOTYPE: $	2380	PROTOTYPE: $
1963	CODE:	2381	PPCODE:
1964	{	2382	{
1965	struct io_state *data = (void *)data_;	2383	AV *av = (AV *)SvRV (state);
		2384	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2385	int i;
1966		2386
1967	errno = data->errorno;	2387	errno = data->errorno;
1968	PL_laststype = data->laststype;	2388	PL_laststype = data->laststype;
1969	PL_laststatval = data->laststatval;	2389	PL_laststatval = data->laststatval;
1970	PL_statcache = data->statcache;	2390	PL_statcache = data->statcache;
1971	}
1972		2391
		2392	EXTEND (SP, AvFILLp (av));
		2393	for (i = 0; i < AvFILLp (av); ++i)
		2394	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2395	}
		2396
		2397
		2398	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2399
		2400	BOOT:
		2401	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2402
		2403	SV *
		2404	_schedule (...)
		2405	PROTOTYPE: @
		2406	CODE:
		2407	{
		2408	static int incede;
		2409
		2410	api_cede_notself ();
		2411
		2412	++incede;
		2413	while (coro_nready >= incede && api_cede ())
		2414	;
		2415
		2416	sv_setsv (sv_activity, &PL_sv_undef);
		2417	if (coro_nready >= incede)
		2418	{
		2419	PUSHMARK (SP);
		2420	PUTBACK;
		2421	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2422	SPAGAIN;
		2423	}
		2424
		2425	--incede;
		2426	}
		2427
		2428
		2429	MODULE = Coro::State PACKAGE = PerlIO::cede
		2430
		2431	BOOT:
		2432	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2433

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