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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.209 by root, Wed Oct 10 02:58:17 2007 UTC vs.
Revision 1.257 by root, Sun Nov 9 15:35:44 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
…		…
43	#else	52	#else
44	# define REGISTER_STACK(cctx,start,end)	53	# define REGISTER_STACK(cctx,start,end)
45	#endif	54	#endif
46		55
47	/* the maximum number of idle cctx that will be pooled */	56	/* the maximum number of idle cctx that will be pooled */
48	#define MAX_IDLE_CCTX 8	57	static int cctx_max_idle = 4;
49		58
50	#define PERL_VERSION_ATLEAST(a,b,c) \	59	#define PERL_VERSION_ATLEAST(a,b,c) \
51	(PERL_REVISION > (a) \	60	(PERL_REVISION > (a) \
52	|| (PERL_REVISION == (a) \	61	|| (PERL_REVISION == (a) \
53	&& (PERL_VERSION > (b) \	62	&& (PERL_VERSION > (b) \
…		…
72	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
73	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
74	# endif	83	# endif
75	#endif	84	#endif
76		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
77	/* 5.8.7 */	104	/* 5.8.7 */
78	#ifndef SvRV_set	105	#ifndef SvRV_set
79	# define SvRV_set(s,v) SvRV(s) = (v)	106	# 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	107	#endif
89		108
90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	109	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91	# undef CORO_STACKGUARD	110	# undef CORO_STACKGUARD
92	#endif	111	#endif
…		…
123	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
124		143
125	#include "CoroAPI.h"	144	#include "CoroAPI.h"
126		145
127	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
128	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
129	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
130	# 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
131	#else	155	#else
		156
132	# define LOCK (void)0	157	# define LOCK (void)0
133	# define UNLOCK (void)0	158	# define UNLOCK (void)0
134	#endif
135		159
136	#define strpair(const) const, sizeof (const) - 1	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
137		166
138	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
139	struct io_state	168	struct io_state
140	{	169	{
		170	AV *res;
141	int errorno;	171	int errorno;
142	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
143	int laststatval;	173	int laststatval;
144	Stat_t statcache;	174	Stat_t statcache;
145	};	175	};
146		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
147	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
148	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
149	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
150	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
151	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
152	static SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
153		186
154	static GV *irsgv; /* $/ */	187	static GV *irsgv; /* $/ */
155	static GV *stdoutgv; /* *STDOUT */	188	static GV *stdoutgv; /* *STDOUT */
156		189	static SV *rv_diehook;
		190	static SV *rv_warnhook;
157	static HV *hv_sig; /* %SIG */	191	static HV *hv_sig; /* %SIG */
158	static SV *sv_diehook;
159	static SV *sv_warnhook;
160		192
161	/* async_pool helper stuff */	193	/* async_pool helper stuff */
162	static SV *sv_pool_rss;	194	static SV *sv_pool_rss;
163	static SV *sv_pool_size;	195	static SV *sv_pool_size;
164	static AV *av_async_pool;	196	static AV *av_async_pool;
165		197
166	static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */	198	/* Coro::AnyEvent */
		199	static SV *sv_activity;
		200
		201	static struct coro_cctx *cctx_first;
167	static int cctx_count, cctx_idle[3];	202	static int cctx_count, cctx_idle;
168		203
169	enum {	204	enum {
170	CC_MAPPED = 0x01,	205	CC_MAPPED = 0x01,
171	CC_NOREUSE = 0x02, /* throw this away after tracing */	206	CC_NOREUSE = 0x02, /* throw this away after tracing */
172	CC_TRACE = 0x04,	207	CC_TRACE = 0x04,
…		…
187	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	222	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
188	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	223	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189	JMPENV *top_env;	224	JMPENV *top_env;
190	coro_context cctx;	225	coro_context cctx;
191		226
		227	U32 gen;
192	#if CORO_USE_VALGRIND	228	#if CORO_USE_VALGRIND
193	int valgrind_id;	229	int valgrind_id;
194	#endif	230	#endif
195	unsigned char flags;	231	unsigned char flags;
196	} coro_cctx;	232	} coro_cctx;
…		…
217		253
218	/* this is a structure representing a perl-level coroutine */	254	/* this is a structure representing a perl-level coroutine */
219	struct coro {	255	struct coro {
220	/* the c coroutine allocated to this perl coroutine, if any */	256	/* the c coroutine allocated to this perl coroutine, if any */
221	coro_cctx *cctx;	257	coro_cctx *cctx;
222	int gimme;
223		258
224	/* process data */	259	/* process data */
225	AV *mainstack;	260	AV *mainstack;
226	perl_slots *slot; /* basically the saved sp */	261	perl_slots *slot; /* basically the saved sp */
227		262
…		…
256	#define PRIO_IDLE -3	291	#define PRIO_IDLE -3
257	#define PRIO_MIN -4	292	#define PRIO_MIN -4
258		293
259	/* for Coro.pm */	294	/* for Coro.pm */
260	static SV *coro_current;	295	static SV *coro_current;
		296	static SV *coro_readyhook;
261	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	297	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
262	static int coro_nready;	298	static int coro_nready;
263	static struct coro *coro_first;	299	static struct coro *coro_first;
264		300
265	/** lowlevel stuff **********************************************************/	301	/** lowlevel stuff **********************************************************/
266		302
267	static SV *	303	static SV *
268	coro_get_sv (const char *name, int create)	304	coro_get_sv (pTHX_ const char *name, int create)
269	{	305	{
270	#if PERL_VERSION_ATLEAST (5,9,0)	306	#if PERL_VERSION_ATLEAST (5,10,0)
271	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	307	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
272	get_sv (name, create);	308	get_sv (name, create);
273	#endif	309	#endif
274	return get_sv (name, create);	310	return get_sv (name, create);
275	}	311	}
276		312
277	static AV *	313	static AV *
278	coro_get_av (const char *name, int create)	314	coro_get_av (pTHX_ const char *name, int create)
279	{	315	{
280	#if PERL_VERSION_ATLEAST (5,9,0)	316	#if PERL_VERSION_ATLEAST (5,10,0)
281	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	317	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
282	get_av (name, create);	318	get_av (name, create);
283	#endif	319	#endif
284	return get_av (name, create);	320	return get_av (name, create);
285	}	321	}
286		322
287	static HV *	323	static HV *
288	coro_get_hv (const char *name, int create)	324	coro_get_hv (pTHX_ const char *name, int create)
289	{	325	{
290	#if PERL_VERSION_ATLEAST (5,9,0)	326	#if PERL_VERSION_ATLEAST (5,10,0)
291	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	327	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
292	get_hv (name, create);	328	get_hv (name, create);
293	#endif	329	#endif
294	return get_hv (name, create);	330	return get_hv (name, create);
295	}	331	}
…		…
300	AV *padlist = CvPADLIST (cv);	336	AV *padlist = CvPADLIST (cv);
301	AV *newpadlist, *newpad;	337	AV *newpadlist, *newpad;
302		338
303	newpadlist = newAV ();	339	newpadlist = newAV ();
304	AvREAL_off (newpadlist);	340	AvREAL_off (newpadlist);
305	#if PERL_VERSION_ATLEAST (5,9,0)	341	#if PERL_VERSION_ATLEAST (5,10,0)
306	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	342	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307	#else	343	#else
308	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	344	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309	#endif	345	#endif
310	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	346	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311	--AvFILLp (padlist);	347	--AvFILLp (padlist);
312		348
313	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	349	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
314	av_store (newpadlist, 1, (SV *)newpad);	350	av_store (newpadlist, 1, (SV *)newpad);
315		351
316	return newpadlist;	352	return newpadlist;
317	}	353	}
318		354
…		…
348		384
349	/* casting is fun. */	385	/* casting is fun. */
350	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	386	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351	free_padlist (aTHX_ padlist);	387	free_padlist (aTHX_ padlist);
352		388
353	SvREFCNT_dec (av);	389	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354		390
355	return 0;	391	return 0;
356	}	392	}
357		393
358	#define PERL_MAGIC_coro PERL_MAGIC_ext	394	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		395	#define CORO_MAGIC_type_state PERL_MAGIC_ext
359		396
360	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	397	static MGVTBL coro_cv_vtbl = {
		398	0, 0, 0, 0,
		399	coro_cv_free
		400	};
361		401
362	#define CORO_MAGIC(cv) \	402	#define CORO_MAGIC(sv, type) \
363	SvMAGIC (cv) \	403	SvMAGIC (sv) \
364	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	404	? SvMAGIC (sv)->mg_type == type \
365	? SvMAGIC (cv) \	405	? SvMAGIC (sv) \
366	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	406	: mg_find (sv, type) \
367	: 0	407	: 0
		408
		409	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		410	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
368		411
369	static struct coro *	412	static struct coro *
370	SvSTATE_ (pTHX_ SV *coro)	413	SvSTATE_ (pTHX_ SV *coro)
371	{	414	{
372	HV *stash;	415	HV *stash;
…		…
384	/* very slow, but rare, check */	427	/* very slow, but rare, check */
385	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	428	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386	croak ("Coro::State object required");	429	croak ("Coro::State object required");
387	}	430	}
388		431
389	mg = CORO_MAGIC (coro);	432	mg = CORO_MAGIC_state (coro);
390	return (struct coro *)mg->mg_ptr;	433	return (struct coro *)mg->mg_ptr;
391	}	434	}
392		435
393	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	436	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394		437
395	/* the next two functions merely cache the padlists */	438	/* the next two functions merely cache the padlists */
396	static void	439	static void
397	get_padlist (pTHX_ CV *cv)	440	get_padlist (pTHX_ CV *cv)
398	{	441	{
399	MAGIC *mg = CORO_MAGIC (cv);	442	MAGIC *mg = CORO_MAGIC_cv (cv);
400	AV *av;	443	AV *av;
401		444
402	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	445	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	446	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404	else	447	else
405	{	448	{
406	#if CORO_PREFER_PERL_FUNCTIONS	449	#if CORO_PREFER_PERL_FUNCTIONS
407	/* this is probably cleaner, but also slower? */	450	/* this is probably cleaner? but also slower! */
		451	/* in practise, it seems to be less stable */
408	CV *cp = Perl_cv_clone (cv);	452	CV *cp = Perl_cv_clone (cv);
409	CvPADLIST (cv) = CvPADLIST (cp);	453	CvPADLIST (cv) = CvPADLIST (cp);
410	CvPADLIST (cp) = 0;	454	CvPADLIST (cp) = 0;
411	SvREFCNT_dec (cp);	455	SvREFCNT_dec (cp);
412	#else	456	#else
…		…
416	}	460	}
417		461
418	static void	462	static void
419	put_padlist (pTHX_ CV *cv)	463	put_padlist (pTHX_ CV *cv)
420	{	464	{
421	MAGIC *mg = CORO_MAGIC (cv);	465	MAGIC *mg = CORO_MAGIC_cv (cv);
422	AV *av;	466	AV *av;
423		467
424	if (expect_false (!mg))	468	if (expect_false (!mg))
425	{	469	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
426	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
427	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
428	mg->mg_virtual = &vtbl_coro;
429	mg->mg_obj = (SV *)newAV ();
430	}
431		470
432	av = (AV *)mg->mg_obj;	471	av = (AV *)mg->mg_obj;
433		472
434	if (expect_false (AvFILLp (av) >= AvMAX (av)))	473	if (expect_false (AvFILLp (av) >= AvMAX (av)))
435	av_extend (av, AvMAX (av) + 1);	474	av_extend (av, AvMAX (av) + 1);
…		…
453	GvSV (irsgv) = slot->irsgv;	492	GvSV (irsgv) = slot->irsgv;
454		493
455	#define VAR(name,type) PL_ ## name = slot->name;	494	#define VAR(name,type) PL_ ## name = slot->name;
456	# include "state.h"	495	# include "state.h"
457	#undef VAR	496	#undef VAR
458
459	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
460	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
461		497
462	{	498	{
463	dSP;	499	dSP;
464		500
465	CV *cv;	501	CV *cv;
…		…
504		540
505	if (expect_true (CvDEPTH (cv)))	541	if (expect_true (CvDEPTH (cv)))
506	{	542	{
507	EXTEND (SP, 3);	543	EXTEND (SP, 3);
508	PUSHs ((SV *)CvPADLIST (cv));	544	PUSHs ((SV *)CvPADLIST (cv));
509	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	545	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510	PUSHs ((SV *)cv);	546	PUSHs ((SV *)cv);
511		547
512	CvDEPTH (cv) = 0;	548	CvDEPTH (cv) = 0;
513	get_padlist (aTHX_ cv);	549	get_padlist (aTHX_ cv);
514	}	550	}
…		…
594		630
595	New(54,PL_savestack,24,ANY);	631	New(54,PL_savestack,24,ANY);
596	PL_savestack_ix = 0;	632	PL_savestack_ix = 0;
597	PL_savestack_max = 24;	633	PL_savestack_max = 24;
598		634
599	#if !PERL_VERSION_ATLEAST (5,9,0)	635	#if !PERL_VERSION_ATLEAST (5,10,0)
600	New(54,PL_retstack,4,OP*);	636	New(54,PL_retstack,4,OP*);
601	PL_retstack_ix = 0;	637	PL_retstack_ix = 0;
602	PL_retstack_max = 4;	638	PL_retstack_max = 4;
603	#endif	639	#endif
604	}	640	}
…		…
606		642
607	/*	643	/*
608	* destroy the stacks, the callchain etc...	644	* destroy the stacks, the callchain etc...
609	*/	645	*/
610	static void	646	static void
611	coro_destroy_stacks (pTHX)	647	coro_destruct_stacks (pTHX)
612	{	648	{
613	while (PL_curstackinfo->si_next)	649	while (PL_curstackinfo->si_next)
614	PL_curstackinfo = PL_curstackinfo->si_next;	650	PL_curstackinfo = PL_curstackinfo->si_next;
615		651
616	while (PL_curstackinfo)	652	while (PL_curstackinfo)
…		…
627		663
628	Safefree (PL_tmps_stack);	664	Safefree (PL_tmps_stack);
629	Safefree (PL_markstack);	665	Safefree (PL_markstack);
630	Safefree (PL_scopestack);	666	Safefree (PL_scopestack);
631	Safefree (PL_savestack);	667	Safefree (PL_savestack);
632	#if !PERL_VERSION_ATLEAST (5,9,0)	668	#if !PERL_VERSION_ATLEAST (5,10,0)
633	Safefree (PL_retstack);	669	Safefree (PL_retstack);
634	#endif	670	#endif
635	}	671	}
636		672
637	static size_t	673	static size_t
…		…
653	#undef VAR	689	#undef VAR
654	}	690	}
655	else	691	else
656	slot = coro->slot;	692	slot = coro->slot;
657		693
		694	if (slot)
		695	{
658	rss += sizeof (slot->curstackinfo);	696	rss += sizeof (slot->curstackinfo);
659	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	697	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	698	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661	rss += slot->tmps_max * sizeof (SV *);	699	rss += slot->tmps_max * sizeof (SV *);
662	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	700	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663	rss += slot->scopestack_max * sizeof (I32);	701	rss += slot->scopestack_max * sizeof (I32);
664	rss += slot->savestack_max * sizeof (ANY);	702	rss += slot->savestack_max * sizeof (ANY);
665		703
666	#if !PERL_VERSION_ATLEAST (5,9,0)	704	#if !PERL_VERSION_ATLEAST (5,10,0)
667	rss += slot->retstack_max * sizeof (OP *);	705	rss += slot->retstack_max * sizeof (OP *);
668	#endif	706	#endif
		707	}
669	}	708	}
670		709
671	return rss;	710	return rss;
672	}	711	}
673		712
674	/** coroutine stack handling ************************************************/	713	/** coroutine stack handling ************************************************/
		714
		715	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		716	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		717	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		718
		719	/* apparently < 5.8.8 */
		720	#ifndef MgPV_nolen_const
		721	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		722	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		723	(const char*)(mg)->mg_ptr)
		724	#endif
		725
		726	/*
		727	* This overrides the default magic get method of %SIG elements.
		728	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		729	* and instead of tryign to save and restore the hash elements, we just provide
		730	* readback here.
		731	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		732	* not expecting this to actually change the hook. This is a potential problem
		733	* when a schedule happens then, but we ignore this.
		734	*/
		735	static int
		736	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		737	{
		738	const char *s = MgPV_nolen_const (mg);
		739
		740	if (*s == '_')
		741	{
		742	SV **svp = 0;
		743
		744	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		745	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		746
		747	if (svp)
		748	{
		749	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		750	return 0;
		751	}
		752	}
		753
		754	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		755	}
		756
		757	static int
		758	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		759	{
		760	const char *s = MgPV_nolen_const (mg);
		761
		762	if (*s == '_')
		763	{
		764	SV **svp = 0;
		765
		766	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		767	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		768
		769	if (svp)
		770	{
		771	SV *old = *svp;
		772	*svp = 0;
		773	SvREFCNT_dec (old);
		774	return 0;
		775	}
		776	}
		777
		778	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		779	}
		780
		781	static int
		782	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		783	{
		784	const char *s = MgPV_nolen_const (mg);
		785
		786	if (*s == '_')
		787	{
		788	SV **svp = 0;
		789
		790	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		791	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		792
		793	if (svp)
		794	{
		795	SV *old = *svp;
		796	*svp = newSVsv (sv);
		797	SvREFCNT_dec (old);
		798	return 0;
		799	}
		800	}
		801
		802	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		803	}
675		804
676	static void	805	static void
677	coro_setup (pTHX_ struct coro *coro)	806	coro_setup (pTHX_ struct coro *coro)
678	{	807	{
679	/*	808	/*
…		…
688	PL_curpm = 0;	817	PL_curpm = 0;
689	PL_curpad = 0;	818	PL_curpad = 0;
690	PL_localizing = 0;	819	PL_localizing = 0;
691	PL_dirty = 0;	820	PL_dirty = 0;
692	PL_restartop = 0;	821	PL_restartop = 0;
693	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);	822	#if PERL_VERSION_ATLEAST (5,10,0)
694	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);	823	PL_parser = 0;
		824	#endif
		825
		826	/* recreate the die/warn hooks */
		827	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		828	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695		829
696	GvSV (PL_defgv) = newSV (0);	830	GvSV (PL_defgv) = newSV (0);
697	GvAV (PL_defgv) = coro->args; coro->args = 0;	831	GvAV (PL_defgv) = coro->args; coro->args = 0;
698	GvSV (PL_errgv) = newSV (0);	832	GvSV (PL_errgv) = newSV (0);
699	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	833	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700	PL_rs = newSVsv (GvSV (irsgv));	834	PL_rs = newSVsv (GvSV (irsgv));
701	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	835	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702		836
703	{	837	{
704	dSP;	838	dSP;
705	LOGOP myop;	839	LOGOP myop;
706		840
…		…
712	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	846	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
713	PUTBACK;	847	PUTBACK;
714	PL_op = (OP *)&myop;	848	PL_op = (OP *)&myop;
715	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	849	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716	SPAGAIN;	850	SPAGAIN;
717
718	/*
719	* now its very tricky. the "tail" of the next transfer might end up
720	* either in a new cctx, or an existing one.
721	* in case of an existing one we have to take care of whatever
722	* entersub and transfer do to the perl stack.
723	*/
724	ENTER;
725	EXTEND (SP, 4);
726	PUSHs ((SV *)0); /* items */
727	PUSHs ((SV *)0); /* ix, set_stacklevel */
728	PUSHs ((SV *)(sp - PL_stack_base + 1)); /* ax */
729	PUSHs ((SV *)0); /* again */
730	PUTBACK;
731	}	851	}
		852
		853	/* this newly created coroutine might be run on an existing cctx which most
		854	* likely was suspended in set_stacklevel, called from entersub.
		855	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
		856	* so we ENTER here for symmetry
		857	*/
		858	ENTER;
732	}	859	}
733		860
734	static void	861	static void
735	coro_destroy (pTHX_ struct coro *coro)	862	coro_destruct (pTHX_ struct coro *coro)
736	{	863	{
737	if (!IN_DESTRUCT)	864	if (!IN_DESTRUCT)
738	{	865	{
739	/* restore all saved variables and stuff */	866	/* restore all saved variables and stuff */
740	LEAVE_SCOPE (0);	867	LEAVE_SCOPE (0);
…		…
762	SvREFCNT_dec (PL_warnhook);	889	SvREFCNT_dec (PL_warnhook);
763		890
764	SvREFCNT_dec (coro->saved_deffh);	891	SvREFCNT_dec (coro->saved_deffh);
765	SvREFCNT_dec (coro->throw);	892	SvREFCNT_dec (coro->throw);
766		893
767	coro_destroy_stacks (aTHX);	894	coro_destruct_stacks (aTHX);
768	}	895	}
769		896
770	static void	897	static void
771	free_coro_mortal (pTHX)	898	free_coro_mortal (pTHX)
772	{	899	{
…		…
809	: cx->blk_gimme == G_SCALAR ? bot + 1	936	: cx->blk_gimme == G_SCALAR ? bot + 1
810	: bot;	937	: bot;
811		938
812	av_extend (av, top - bot);	939	av_extend (av, top - bot);
813	while (bot < top)	940	while (bot < top)
814	av_push (av, SvREFCNT_inc (*bot++));	941	av_push (av, SvREFCNT_inc_NN (*bot++));
815		942
816	PL_runops = RUNOPS_DEFAULT;	943	PL_runops = RUNOPS_DEFAULT;
817	ENTER;	944	ENTER;
818	SAVETMPS;	945	SAVETMPS;
819	EXTEND (SP, 3);	946	EXTEND (SP, 3);
820	PUSHMARK (SP);	947	PUSHMARK (SP);
821	PUSHs (&PL_sv_no);	948	PUSHs (&PL_sv_no);
822	PUSHs (fullname);	949	PUSHs (fullname);
823	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	950	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
824	PUTBACK;	951	PUTBACK;
825	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	952	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
826	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	953	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
827	SPAGAIN;	954	SPAGAIN;
828	FREETMPS;	955	FREETMPS;
829	LEAVE;	956	LEAVE;
830	PL_runops = runops_trace;	957	PL_runops = runops_trace;
…		…
857	SAVETMPS;	984	SAVETMPS;
858	EXTEND (SP, 3);	985	EXTEND (SP, 3);
859	PUSHMARK (SP);	986	PUSHMARK (SP);
860	PUSHs (&PL_sv_yes);	987	PUSHs (&PL_sv_yes);
861	PUSHs (fullname);	988	PUSHs (fullname);
862	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	989	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
863	PUTBACK;	990	PUTBACK;
864	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	991	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
865	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	992	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
866	SPAGAIN;	993	SPAGAIN;
867	FREETMPS;	994	FREETMPS;
868	LEAVE;	995	LEAVE;
869	PL_runops = runops_trace;	996	PL_runops = runops_trace;
…		…
883	PL_runops = RUNOPS_DEFAULT;	1010	PL_runops = RUNOPS_DEFAULT;
884	PUSHMARK (SP);	1011	PUSHMARK (SP);
885	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	1012	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
886	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	1013	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
887	PUTBACK;	1014	PUTBACK;
888	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);	1015	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
889	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1016	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
890	SPAGAIN;	1017	SPAGAIN;
891	FREETMPS;	1018	FREETMPS;
892	LEAVE;	1019	LEAVE;
893	PL_runops = runops_trace;	1020	PL_runops = runops_trace;
…		…
933	* this is a _very_ stripped down perl interpreter ;)	1060	* this is a _very_ stripped down perl interpreter ;)
934	*/	1061	*/
935	static void	1062	static void
936	cctx_run (void *arg)	1063	cctx_run (void *arg)
937	{	1064	{
		1065	#ifdef USE_ITHREADS
		1066	# if CORO_PTHREAD
		1067	PERL_SET_CONTEXT (coro_thx);
		1068	# endif
		1069	#endif
		1070	{
938	dTHX;	1071	dTHX;
939		1072
940	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1073	/* cctx_run is the alternative tail of transfer(), so unlock here. */
941	UNLOCK;	1074	UNLOCK;
942		1075
943	/* we now skip the entersub that lead to transfer() */	1076	/* we now skip the entersub that lead to transfer() */
944	PL_op = PL_op->op_next;	1077	PL_op = PL_op->op_next;
945		1078
946	/* inject a fake subroutine call to cctx_init */	1079	/* inject a fake subroutine call to cctx_init */
947	cctx_prepare (aTHX_ (coro_cctx *)arg);	1080	cctx_prepare (aTHX_ (coro_cctx *)arg);
948		1081
949	/* somebody or something will hit me for both perl_run and PL_restartop */	1082	/* somebody or something will hit me for both perl_run and PL_restartop */
950	PL_restartop = PL_op;	1083	PL_restartop = PL_op;
951	perl_run (PL_curinterp);	1084	perl_run (PL_curinterp);
952		1085
953	/*	1086	/*
954	* If perl-run returns we assume exit() was being called or the coro	1087	* If perl-run returns we assume exit() was being called or the coro
955	* fell off the end, which seems to be the only valid (non-bug)	1088	* fell off the end, which seems to be the only valid (non-bug)
956	* reason for perl_run to return. We try to exit by jumping to the	1089	* reason for perl_run to return. We try to exit by jumping to the
957	* bootstrap-time "top" top_env, as we cannot restore the "main"	1090	* bootstrap-time "top" top_env, as we cannot restore the "main"
958	* coroutine as Coro has no such concept	1091	* coroutine as Coro has no such concept
959	*/	1092	*/
960	PL_top_env = main_top_env;	1093	PL_top_env = main_top_env;
961	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1094	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1095	}
962	}	1096	}
963		1097
964	static coro_cctx *	1098	static coro_cctx *
965	cctx_new ()	1099	cctx_new ()
966	{	1100	{
967	coro_cctx *cctx;	1101	coro_cctx *cctx;
968	void *stack_start;	1102	void *stack_start;
969	size_t stack_size;	1103	size_t stack_size;
970		1104
971	++cctx_count;	1105	++cctx_count;
972
973	Newz (0, cctx, 1, coro_cctx);	1106	Newz (0, cctx, 1, coro_cctx);
974		1107
		1108	cctx->gen = cctx_gen;
		1109
975	#if HAVE_MMAP	1110	#if HAVE_MMAP
976	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1111	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
977	/* mmap supposedly does allocate-on-write for us */	1112	/* mmap supposedly does allocate-on-write for us */
978	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1113	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
979		1114
980	if (cctx->sptr != (void *)-1)	1115	if (cctx->sptr != (void *)-1)
981	{	1116	{
…		…
987	cctx->flags |= CC_MAPPED;	1122	cctx->flags |= CC_MAPPED;
988	}	1123	}
989	else	1124	else
990	#endif	1125	#endif
991	{	1126	{
992	cctx->ssize = coro_stacksize * (long)sizeof (long);	1127	cctx->ssize = cctx_stacksize * (long)sizeof (long);
993	New (0, cctx->sptr, coro_stacksize, long);	1128	New (0, cctx->sptr, cctx_stacksize, long);
994		1129
995	if (!cctx->sptr)	1130	if (!cctx->sptr)
996	{	1131	{
997	perror ("FATAL: unable to allocate stack for coroutine");	1132	perror ("FATAL: unable to allocate stack for coroutine");
998	_exit (EXIT_FAILURE);	1133	_exit (EXIT_FAILURE);
…		…
1013	{	1148	{
1014	if (!cctx)	1149	if (!cctx)
1015	return;	1150	return;
1016		1151
1017	--cctx_count;	1152	--cctx_count;
		1153	coro_destroy (&cctx->cctx);
1018		1154
		1155	/* coro_transfer creates new, empty cctx's */
		1156	if (cctx->sptr)
		1157	{
1019	#if CORO_USE_VALGRIND	1158	#if CORO_USE_VALGRIND
1020	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1159	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1021	#endif	1160	#endif
1022		1161
1023	#if HAVE_MMAP	1162	#if HAVE_MMAP
1024	if (cctx->flags & CC_MAPPED)	1163	if (cctx->flags & CC_MAPPED)
1025	munmap (cctx->sptr, cctx->ssize);	1164	munmap (cctx->sptr, cctx->ssize);
1026	else	1165	else
1027	#endif	1166	#endif
1028	Safefree (cctx->sptr);	1167	Safefree (cctx->sptr);
		1168	}
1029		1169
1030	Safefree (cctx);	1170	Safefree (cctx);
1031	}	1171	}
1032		1172
1033	/* wether this cctx should be destructed */	1173	/* wether this cctx should be destructed */
1034	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1174	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1035		1175
1036	static coro_cctx *	1176	static coro_cctx *
1037	cctx_get (pTHX_ int gimme)	1177	cctx_get (pTHX)
1038	{	1178	{
1039	while (expect_true (cctx_first[gimme]))	1179	while (expect_true (cctx_first))
1040	{	1180	{
1041	coro_cctx *cctx = cctx_first[gimme];	1181	coro_cctx *cctx = cctx_first;
1042	cctx_first[gimme] = cctx->next;	1182	cctx_first = cctx->next;
1043	--cctx_idle[gimme];	1183	--cctx_idle;
1044		1184
1045	if (expect_true (!CCTX_EXPIRED (cctx)))	1185	if (expect_true (!CCTX_EXPIRED (cctx)))
1046	return cctx;	1186	return cctx;
1047		1187
1048	cctx_destroy (cctx);	1188	cctx_destroy (cctx);
1049	}	1189	}
1050		1190
1051	assert (!gimme);
1052	return cctx_new ();	1191	return cctx_new ();
1053	}	1192	}
1054		1193
1055	static void	1194	static void
1056	cctx_put (coro_cctx *cctx, int gimme)	1195	cctx_put (coro_cctx *cctx)
1057	{	1196	{
		1197	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1198
1058	/* free another cctx if overlimit */	1199	/* free another cctx if overlimit */
1059	if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX))	1200	if (expect_false (cctx_idle >= cctx_max_idle))
1060	{	1201	{
1061	coro_cctx *first = cctx_first[gimme];	1202	coro_cctx *first = cctx_first;
1062	cctx_first[gimme] = first->next;	1203	cctx_first = first->next;
1063	--cctx_idle[gimme];	1204	--cctx_idle;
1064		1205
1065	cctx_destroy (first);	1206	cctx_destroy (first);
1066	}	1207	}
1067		1208
1068	++cctx_idle[gimme];	1209	++cctx_idle;
1069	cctx->next = cctx_first[gimme];	1210	cctx->next = cctx_first;
1070	cctx_first[gimme] = cctx;	1211	cctx_first = cctx;
1071	}	1212	}
1072		1213
1073	/** coroutine switching *****************************************************/	1214	/** coroutine switching *****************************************************/
1074		1215
1075	static void	1216	static void
…		…
1084	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1225	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1085		1226
1086	if (expect_false (next->flags & CF_DESTROYED))	1227	if (expect_false (next->flags & CF_DESTROYED))
1087	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1228	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1088		1229
1089	if (
1090	#if PERL_VERSION_ATLEAST (5,9,0)	1230	#if !PERL_VERSION_ATLEAST (5,10,0)
1091	expect_false (PL_parser)
1092	#else
1093	expect_false (PL_lex_state != LEX_NOTPARSING)	1231	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1094	#endif
1095	)
1096	croak ("Coro::State::transfer called while parsing, but this is not supported");	1232	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1233	#endif
1097	}	1234	}
1098	}	1235	}
1099		1236
1100	/* always use the TRANSFER macro */	1237	/* always use the TRANSFER macro */
1101	static void NOINLINE	1238	static void NOINLINE
1102	transfer (pTHX_ struct coro *prev, struct coro *next)	1239	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1103	{	1240	{
1104	dSTACKLEVEL;	1241	dSTACKLEVEL;
1105		1242
1106	/* sometimes transfer is only called to set idle_sp */	1243	/* sometimes transfer is only called to set idle_sp */
1107	if (expect_false (!next))	1244	if (expect_false (!next))
…		…
1109	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1246	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1110	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1247	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1111	}	1248	}
1112	else if (expect_true (prev != next))	1249	else if (expect_true (prev != next))
1113	{	1250	{
		1251	static volatile int has_throw;
1114	coro_cctx *prev__cctx;	1252	coro_cctx *prev__cctx;
1115		1253
1116	if (expect_false (prev->flags & CF_NEW))	1254	if (expect_false (prev->flags & CF_NEW))
1117	{	1255	{
1118	/* create a new empty context */	1256	/* create a new empty/source context */
		1257	++cctx_count;
1119	Newz (0, prev->cctx, 1, coro_cctx);	1258	New (0, prev->cctx, 1, coro_cctx);
		1259	prev->cctx->sptr = 0;
		1260	coro_create (&prev->cctx->cctx, 0, 0, 0, 0);
		1261
1120	prev->flags &= ~CF_NEW;	1262	prev->flags &= ~CF_NEW;
1121	prev->flags |= CF_RUNNING;	1263	prev->flags |= CF_RUNNING;
1122	}	1264	}
1123		1265
1124	prev->flags &= ~CF_RUNNING;	1266	prev->flags &= ~CF_RUNNING;
1125	next->flags |= CF_RUNNING;	1267	next->flags |= CF_RUNNING;
1126		1268
1127	LOCK;	1269	LOCK;
		1270
		1271	/* first get rid of the old state */
		1272	save_perl (aTHX_ prev);
1128		1273
1129	if (expect_false (next->flags & CF_NEW))	1274	if (expect_false (next->flags & CF_NEW))
1130	{	1275	{
1131	/* need to start coroutine */	1276	/* need to start coroutine */
1132	next->flags &= ~CF_NEW;	1277	next->flags &= ~CF_NEW;
1133	/* first get rid of the old state */
1134	save_perl (aTHX_ prev);
1135	/* setup coroutine call */	1278	/* setup coroutine call */
1136	coro_setup (aTHX_ next);	1279	coro_setup (aTHX_ next);
1137	}	1280	}
1138	else	1281	else
1139	{
1140	/* coroutine already started */
1141	save_perl (aTHX_ prev);
1142	load_perl (aTHX_ next);	1282	load_perl (aTHX_ next);
1143	}
1144		1283
1145	prev__cctx = prev->cctx;	1284	prev__cctx = prev->cctx;
1146		1285
1147	/* possibly "free" the cctx */	1286	/* possibly "free" the cctx */
1148	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1287	if (expect_true (
		1288	prev__cctx->idle_sp == STACKLEVEL
		1289	&& !(prev__cctx->flags & CC_TRACE)
		1290	&& !force_cctx
		1291	))
1149	{	1292	{
1150	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1293	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1151	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1294	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1152		1295
1153	prev->cctx = 0;	1296	prev->cctx = 0;
1154		1297
1155	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1298	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1156	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1299	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1157	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1300	if (expect_false (CCTX_EXPIRED (prev__cctx)))
1158	if (!next->cctx)	1301	if (!next->cctx)
1159	next->cctx = cctx_get (aTHX_ next->gimme);	1302	next->cctx = cctx_get (aTHX);
1160		1303
1161	cctx_put (prev__cctx, prev->gimme);	1304	cctx_put (prev__cctx);
1162	}	1305	}
1163		1306
1164	++next->usecount;	1307	++next->usecount;
1165		1308
1166	if (expect_true (!next->cctx))	1309	if (expect_true (!next->cctx))
1167	next->cctx = cctx_get (aTHX_ next->gimme);	1310	next->cctx = cctx_get (aTHX);
		1311
		1312	has_throw = !!next->throw;
1168		1313
1169	if (expect_false (prev__cctx != next->cctx))	1314	if (expect_false (prev__cctx != next->cctx))
1170	{	1315	{
1171	prev__cctx->top_env = PL_top_env;	1316	prev__cctx->top_env = PL_top_env;
1172	PL_top_env = next->cctx->top_env;	1317	PL_top_env = next->cctx->top_env;
…		…
1174	}	1319	}
1175		1320
1176	free_coro_mortal (aTHX);	1321	free_coro_mortal (aTHX);
1177	UNLOCK;	1322	UNLOCK;
1178		1323
1179	if (expect_false (prev->throw || next->throw))	1324	if (expect_false (has_throw))
1180	{	1325	{
1181	struct coro *coro = SvSTATE (coro_current);	1326	struct coro *coro = SvSTATE (coro_current);
1182		1327
1183	if (coro->throw)	1328	if (coro->throw)
1184	{	1329	{
…		…
1194	struct transfer_args	1339	struct transfer_args
1195	{	1340	{
1196	struct coro *prev, *next;	1341	struct coro *prev, *next;
1197	};	1342	};
1198		1343
1199	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1344	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1200	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1345	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1201		1346
1202	/** high level stuff ********************************************************/	1347	/** high level stuff ********************************************************/
1203		1348
1204	static int	1349	static int
…		…
1228	croak ("FATAL: tried to destroy currently running coroutine");	1373	croak ("FATAL: tried to destroy currently running coroutine");
1229		1374
1230	save_perl (aTHX_ &temp);	1375	save_perl (aTHX_ &temp);
1231	load_perl (aTHX_ coro);	1376	load_perl (aTHX_ coro);
1232		1377
1233	coro_destroy (aTHX_ coro);	1378	coro_destruct (aTHX_ coro);
1234		1379
1235	load_perl (aTHX_ &temp);	1380	load_perl (aTHX_ &temp);
1236		1381
1237	coro->slot = 0;	1382	coro->slot = 0;
1238	}	1383	}
…		…
1298	{	1443	{
1299	dTHX;	1444	dTHX;
1300	struct transfer_args ta;	1445	struct transfer_args ta;
1301		1446
1302	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1447	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1303	TRANSFER (ta);	1448	TRANSFER (ta, 1);
1304	}	1449	}
1305		1450
1306	/** Coro ********************************************************************/	1451	/** Coro ********************************************************************/
1307		1452
1308	static void	1453	static void
…		…
1310	{	1455	{
1311	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1456	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1312	}	1457	}
1313		1458
1314	static SV *	1459	static SV *
1315	coro_deq (pTHX_ int min_prio)	1460	coro_deq (pTHX)
1316	{	1461	{
1317	int prio = PRIO_MAX - PRIO_MIN;	1462	int prio;
1318		1463
1319	min_prio -= PRIO_MIN;
1320	if (min_prio < 0)
1321	min_prio = 0;
1322
1323	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1464	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1324	if (AvFILLp (coro_ready [prio]) >= 0)	1465	if (AvFILLp (coro_ready [prio]) >= 0)
1325	return av_shift (coro_ready [prio]);	1466	return av_shift (coro_ready [prio]);
1326		1467
1327	return 0;	1468	return 0;
1328	}	1469	}
…		…
1330	static int	1471	static int
1331	api_ready (SV *coro_sv)	1472	api_ready (SV *coro_sv)
1332	{	1473	{
1333	dTHX;	1474	dTHX;
1334	struct coro *coro;	1475	struct coro *coro;
		1476	SV *sv_hook;
		1477	void (*xs_hook)(void);
1335		1478
1336	if (SvROK (coro_sv))	1479	if (SvROK (coro_sv))
1337	coro_sv = SvRV (coro_sv);	1480	coro_sv = SvRV (coro_sv);
1338		1481
1339	coro = SvSTATE (coro_sv);	1482	coro = SvSTATE (coro_sv);
…		…
1342	return 0;	1485	return 0;
1343		1486
1344	coro->flags |= CF_READY;	1487	coro->flags |= CF_READY;
1345		1488
1346	LOCK;	1489	LOCK;
		1490
		1491	sv_hook = coro_nready ? 0 : coro_readyhook;
		1492	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1493
1347	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1494	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1348	++coro_nready;	1495	++coro_nready;
		1496
1349	UNLOCK;	1497	UNLOCK;
		1498
		1499	if (sv_hook)
		1500	{
		1501	dSP;
		1502
		1503	ENTER;
		1504	SAVETMPS;
		1505
		1506	PUSHMARK (SP);
		1507	PUTBACK;
		1508	call_sv (sv_hook, G_DISCARD);
		1509	SPAGAIN;
		1510
		1511	FREETMPS;
		1512	LEAVE;
		1513	}
		1514
		1515	if (xs_hook)
		1516	xs_hook ();
1350		1517
1351	return 1;	1518	return 1;
1352	}	1519	}
1353		1520
1354	static int	1521	static int
…		…
1364	SV *prev_sv, *next_sv;	1531	SV *prev_sv, *next_sv;
1365		1532
1366	for (;;)	1533	for (;;)
1367	{	1534	{
1368	LOCK;	1535	LOCK;
1369	next_sv = coro_deq (aTHX_ PRIO_MIN);	1536	next_sv = coro_deq (aTHX);
1370		1537
1371	/* nothing to schedule: call the idle handler */	1538	/* nothing to schedule: call the idle handler */
1372	if (expect_false (!next_sv))	1539	if (expect_false (!next_sv))
1373	{	1540	{
1374	dSP;	1541	dSP;
…		…
1378	SAVETMPS;	1545	SAVETMPS;
1379		1546
1380	PUSHMARK (SP);	1547	PUSHMARK (SP);
1381	PUTBACK;	1548	PUTBACK;
1382	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1549	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1550	SPAGAIN;
1383		1551
1384	FREETMPS;	1552	FREETMPS;
1385	LEAVE;	1553	LEAVE;
1386	continue;	1554	continue;
1387	}	1555	}
…		…
1442	{	1610	{
1443	dTHX;	1611	dTHX;
1444	struct transfer_args ta;	1612	struct transfer_args ta;
1445		1613
1446	prepare_schedule (aTHX_ &ta);	1614	prepare_schedule (aTHX_ &ta);
1447	TRANSFER (ta);	1615	TRANSFER (ta, 1);
1448	}	1616	}
1449		1617
1450	static int	1618	static int
1451	api_cede (void)	1619	api_cede (void)
1452	{	1620	{
…		…
1455		1623
1456	prepare_cede (aTHX_ &ta);	1624	prepare_cede (aTHX_ &ta);
1457		1625
1458	if (expect_true (ta.prev != ta.next))	1626	if (expect_true (ta.prev != ta.next))
1459	{	1627	{
1460	TRANSFER (ta);	1628	TRANSFER (ta, 1);
1461	return 1;	1629	return 1;
1462	}	1630	}
1463	else	1631	else
1464	return 0;	1632	return 0;
1465	}	1633	}
…		…
1470	dTHX;	1638	dTHX;
1471	struct transfer_args ta;	1639	struct transfer_args ta;
1472		1640
1473	if (prepare_cede_notself (aTHX_ &ta))	1641	if (prepare_cede_notself (aTHX_ &ta))
1474	{	1642	{
1475	TRANSFER (ta);	1643	TRANSFER (ta, 1);
1476	return 1;	1644	return 1;
1477	}	1645	}
1478	else	1646	else
1479	return 0;	1647	return 0;
1480	}	1648	}
…		…
1503	else	1671	else
1504	coro->slot->runops = RUNOPS_DEFAULT;	1672	coro->slot->runops = RUNOPS_DEFAULT;
1505	}	1673	}
1506	}	1674	}
1507		1675
		1676	#if 0
		1677	static int
		1678	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1679	{
		1680	AV *padlist;
		1681	AV *av = (AV *)mg->mg_obj;
		1682
		1683	abort ();
		1684
		1685	return 0;
		1686	}
		1687
		1688	static MGVTBL coro_gensub_vtbl = {
		1689	0, 0, 0, 0,
		1690	coro_gensub_free
		1691	};
		1692	#endif
		1693
		1694	/*****************************************************************************/
		1695	/* PerlIO::cede */
		1696
		1697	typedef struct
		1698	{
		1699	PerlIOBuf base;
		1700	NV next, every;
		1701	} PerlIOCede;
		1702
		1703	static IV
		1704	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1705	{
		1706	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1707
		1708	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1709	self->next = nvtime () + self->every;
		1710
		1711	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1712	}
		1713
		1714	static SV *
		1715	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1716	{
		1717	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1718
		1719	return newSVnv (self->every);
		1720	}
		1721
		1722	static IV
		1723	PerlIOCede_flush (pTHX_ PerlIO *f)
		1724	{
		1725	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1726	double now = nvtime ();
		1727
		1728	if (now >= self->next)
		1729	{
		1730	api_cede ();
		1731	self->next = now + self->every;
		1732	}
		1733
		1734	return PerlIOBuf_flush (aTHX_ f);
		1735	}
		1736
		1737	static PerlIO_funcs PerlIO_cede =
		1738	{
		1739	sizeof(PerlIO_funcs),
		1740	"cede",
		1741	sizeof(PerlIOCede),
		1742	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1743	PerlIOCede_pushed,
		1744	PerlIOBuf_popped,
		1745	PerlIOBuf_open,
		1746	PerlIOBase_binmode,
		1747	PerlIOCede_getarg,
		1748	PerlIOBase_fileno,
		1749	PerlIOBuf_dup,
		1750	PerlIOBuf_read,
		1751	PerlIOBuf_unread,
		1752	PerlIOBuf_write,
		1753	PerlIOBuf_seek,
		1754	PerlIOBuf_tell,
		1755	PerlIOBuf_close,
		1756	PerlIOCede_flush,
		1757	PerlIOBuf_fill,
		1758	PerlIOBase_eof,
		1759	PerlIOBase_error,
		1760	PerlIOBase_clearerr,
		1761	PerlIOBase_setlinebuf,
		1762	PerlIOBuf_get_base,
		1763	PerlIOBuf_bufsiz,
		1764	PerlIOBuf_get_ptr,
		1765	PerlIOBuf_get_cnt,
		1766	PerlIOBuf_set_ptrcnt,
		1767	};
		1768
		1769
1508	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1770	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1509		1771
1510	PROTOTYPES: DISABLE	1772	PROTOTYPES: DISABLE
1511		1773
1512	BOOT:	1774	BOOT:
1513	{	1775	{
1514	#ifdef USE_ITHREADS	1776	#ifdef USE_ITHREADS
1515	MUTEX_INIT (&coro_mutex);	1777	MUTEX_INIT (&coro_lock);
		1778	# if CORO_PTHREAD
		1779	coro_thx = PERL_GET_CONTEXT;
		1780	# endif
1516	#endif	1781	#endif
1517	BOOT_PAGESIZE;	1782	BOOT_PAGESIZE;
1518		1783
1519	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1784	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1520	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1785	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1521		1786
		1787	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1788	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1789	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1790
1522	hv_sig = coro_get_hv ("SIG", TRUE);	1791	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1523	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1792	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1524	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);	1793	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1525
1526	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1527	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1528		1794
1529	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1795	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1530		1796
1531	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1797	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1532	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1798	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1537	main_top_env = PL_top_env;	1803	main_top_env = PL_top_env;
1538		1804
1539	while (main_top_env->je_prev)	1805	while (main_top_env->je_prev)
1540	main_top_env = main_top_env->je_prev;	1806	main_top_env = main_top_env->je_prev;
1541		1807
1542	coroapi.ver = CORO_API_VERSION;	1808	coroapi.ver = CORO_API_VERSION;
		1809	coroapi.rev = CORO_API_REVISION;
1543	coroapi.transfer = api_transfer;	1810	coroapi.transfer = api_transfer;
		1811
		1812	{
		1813	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1814
		1815	if (!svp) croak ("Time::HiRes is required");
		1816	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1817
		1818	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1819	}
1544		1820
1545	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1821	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1546	}	1822	}
1547		1823
1548	SV *	1824	SV *
1549	new (char *klass, ...)	1825	new (char *klass, ...)
1550	CODE:	1826	CODE:
1551	{	1827	{
1552	struct coro *coro;	1828	struct coro *coro;
		1829	MAGIC *mg;
1553	HV *hv;	1830	HV *hv;
1554	int i;	1831	int i;
1555		1832
1556	Newz (0, coro, 1, struct coro);	1833	Newz (0, coro, 1, struct coro);
1557	coro->args = newAV ();	1834	coro->args = newAV ();
…		…
1560	if (coro_first) coro_first->prev = coro;	1837	if (coro_first) coro_first->prev = coro;
1561	coro->next = coro_first;	1838	coro->next = coro_first;
1562	coro_first = coro;	1839	coro_first = coro;
1563		1840
1564	coro->hv = hv = newHV ();	1841	coro->hv = hv = newHV ();
1565	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1842	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1843	mg->mg_flags |= MGf_DUP;
1566	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1844	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1567		1845
1568	av_extend (coro->args, items - 1);	1846	av_extend (coro->args, items - 1);
1569	for (i = 1; i < items; i++)	1847	for (i = 1; i < items; i++)
1570	av_push (coro->args, newSVsv (ST (i)));	1848	av_push (coro->args, newSVsv (ST (i)));
…		…
1576	# function to increase chances that they all will call transfer with the same	1854	# function to increase chances that they all will call transfer with the same
1577	# stack offset	1855	# stack offset
1578	void	1856	void
1579	_set_stacklevel (...)	1857	_set_stacklevel (...)
1580	ALIAS:	1858	ALIAS:
1581	Coro::State::transfer = 1	1859	Coro::State::transfer = 1
1582	Coro::schedule = 2	1860	Coro::schedule = 2
1583	Coro::cede = 3	1861	Coro::cede = 3
1584	Coro::cede_notself = 4	1862	Coro::cede_notself = 4
1585	Coro::Event::next = 5
1586	Coro::Event::next_cancel = 6
1587	PPCODE:	1863	CODE:
1588	{	1864	{
1589	struct transfer_args ta;	1865	struct transfer_args ta;
1590	int again = 0;
1591		1866
1592	do	1867	PUTBACK;
		1868	switch (ix)
1593	{	1869	{
1594	switch (ix)
1595	{
1596	case 0:	1870	case 0:
1597	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1871	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1598	ta.next = 0;	1872	ta.next = 0;
1599	break;	1873	break;
1600		1874
1601	case 1:	1875	case 1:
1602	if (items != 2)	1876	if (items != 2)
1603	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1877	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1604		1878
1605	prepare_transfer (aTHX_ &ta, ST(0), ST(1));	1879	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1606	break;	1880	break;
1607		1881
1608	case 2:	1882	case 2:
1609	prepare_schedule (aTHX_ &ta);	1883	prepare_schedule (aTHX_ &ta);
1610	break;	1884	break;
1611		1885
1612	case 3:	1886	case 3:
1613	prepare_cede (aTHX_ &ta);	1887	prepare_cede (aTHX_ &ta);
1614	break;	1888	break;
1615		1889
1616	case 4:	1890	case 4:
1617	if (!prepare_cede_notself (aTHX_ &ta))	1891	if (!prepare_cede_notself (aTHX_ &ta))
1618	XSRETURN_EMPTY;	1892	XSRETURN_EMPTY;
1619		1893
1620	break;	1894	break;
1621
1622	case 5:
1623	case 6:
1624	if (items != 1)
1625	croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1626
1627	{
1628	SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1629
1630	if (ev)
1631	{
1632	if (GIMME_V != G_VOID)
1633	{
1634	XPUSHs (ev);
1635	XSRETURN (1);
1636	}
1637	else
1638	XSRETURN_EMPTY;
1639	}
1640	}
1641
1642	prepare_schedule (aTHX_ &ta);
1643	again = 1;
1644	break;
1645	}
1646
1647	/* our caller, entersub, caches *only* this value */
1648	ta.prev->gimme = GIMME_V == G_VOID ? 0
1649	: GIMME_V == G_SCALAR ? 1
1650	: 2;
1651
1652	/* we need to save all local variables, as we might execute a different coroutine when transfer returns */
1653	sp += 2; /* save args */
1654	EXTEND (SP, 4);
1655	PUSHs ((SV *)(intptr_t)items);
1656	PUSHs ((SV *)(intptr_t)ix);
1657	PUSHs ((SV *)(intptr_t)ax);
1658	PUSHs ((SV *)(intptr_t)again);
1659	PUTBACK;
1660	BARRIER;
1661	TRANSFER (ta);
1662	BARRIER;
1663	SPAGAIN;
1664	again = (intptr_t)POPs;
1665	ax = (intptr_t)POPs;
1666	ix = (intptr_t)POPs;
1667	items = (intptr_t)POPs;
1668	sp -= 2; /* restore args */
1669	}	1895	}
1670	while (again);	1896	SPAGAIN;
1671		1897
1672	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))	1898	BARRIER;
1673	XSRETURN_YES;	1899	PUTBACK;
1674		1900	TRANSFER (ta, 0);
1675	XSRETURN_EMPTY; /* not understood why this is necessary, likely some stack handling bug */	1901	SPAGAIN; /* might be the sp of a different coroutine now */
		1902	/* be extra careful not to ever do anything after TRANSFER */
1676	}	1903	}
1677		1904
1678	bool	1905	bool
1679	_destroy (SV *coro_sv)	1906	_destroy (SV *coro_sv)
1680	CODE:	1907	CODE:
1681	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1908	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1682	OUTPUT:	1909	OUTPUT:
1683	RETVAL	1910	RETVAL
1684		1911
1685	void	1912	void
1686	_exit (code)	1913	_exit (int code)
1687	int code
1688	PROTOTYPE: $	1914	PROTOTYPE: $
1689	CODE:	1915	CODE:
1690	_exit (code);	1916	_exit (code);
1691		1917
1692	int	1918	int
1693	cctx_stacksize (int new_stacksize = 0)	1919	cctx_stacksize (int new_stacksize = 0)
1694	CODE:	1920	CODE:
1695	RETVAL = coro_stacksize;	1921	RETVAL = cctx_stacksize;
1696	if (new_stacksize)	1922	if (new_stacksize)
		1923	{
1697	coro_stacksize = new_stacksize;	1924	cctx_stacksize = new_stacksize;
		1925	++cctx_gen;
		1926	}
		1927	OUTPUT:
		1928	RETVAL
		1929
		1930	int
		1931	cctx_max_idle (int max_idle = 0)
		1932	CODE:
		1933	RETVAL = cctx_max_idle;
		1934	if (max_idle > 1)
		1935	cctx_max_idle = max_idle;
1698	OUTPUT:	1936	OUTPUT:
1699	RETVAL	1937	RETVAL
1700		1938
1701	int	1939	int
1702	cctx_count ()	1940	cctx_count ()
…		…
1706	RETVAL	1944	RETVAL
1707		1945
1708	int	1946	int
1709	cctx_idle ()	1947	cctx_idle ()
1710	CODE:	1948	CODE:
1711	RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];	1949	RETVAL = cctx_idle;
1712	OUTPUT:	1950	OUTPUT:
1713	RETVAL	1951	RETVAL
1714		1952
1715	void	1953	void
1716	list ()	1954	list ()
…		…
1726	call (Coro::State coro, SV *coderef)	1964	call (Coro::State coro, SV *coderef)
1727	ALIAS:	1965	ALIAS:
1728	eval = 1	1966	eval = 1
1729	CODE:	1967	CODE:
1730	{	1968	{
1731	if (coro->mainstack)	1969	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1732	{	1970	{
1733	struct coro temp;	1971	struct coro temp;
1734		1972
1735	if (!(coro->flags & CF_RUNNING))	1973	if (!(coro->flags & CF_RUNNING))
1736	{	1974	{
		1975	PUTBACK;
1737	save_perl (aTHX_ &temp);	1976	save_perl (aTHX_ &temp);
1738	load_perl (aTHX_ coro);	1977	load_perl (aTHX_ coro);
1739	}	1978	}
1740		1979
1741	{	1980	{
…		…
1750	eval_sv (coderef, 0);	1989	eval_sv (coderef, 0);
1751	else	1990	else
1752	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1991	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1753		1992
1754	POPSTACK;	1993	POPSTACK;
		1994	SPAGAIN;
1755	FREETMPS;	1995	FREETMPS;
1756	LEAVE;	1996	LEAVE;
		1997	PUTBACK;
1757	}	1998	}
1758		1999
1759	if (!(coro->flags & CF_RUNNING))	2000	if (!(coro->flags & CF_RUNNING))
1760	{	2001	{
1761	save_perl (aTHX_ coro);	2002	save_perl (aTHX_ coro);
1762	load_perl (aTHX_ &temp);	2003	load_perl (aTHX_ &temp);
		2004	SPAGAIN;
1763	}	2005	}
1764	}	2006	}
1765	}	2007	}
1766		2008
1767	SV *	2009	SV *
…		…
1779		2021
1780	void	2022	void
1781	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2023	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1782		2024
1783	SV *	2025	SV *
1784	has_stack (Coro::State coro)	2026	has_cctx (Coro::State coro)
1785	PROTOTYPE: $	2027	PROTOTYPE: $
1786	CODE:	2028	CODE:
1787	RETVAL = boolSV (!!coro->cctx);	2029	RETVAL = boolSV (!!coro->cctx);
1788	OUTPUT:	2030	OUTPUT:
1789	RETVAL	2031	RETVAL
…		…
1794	CODE:	2036	CODE:
1795	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2037	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1796	OUTPUT:	2038	OUTPUT:
1797	RETVAL	2039	RETVAL
1798		2040
1799	IV	2041	UV
1800	rss (Coro::State coro)	2042	rss (Coro::State coro)
1801	PROTOTYPE: $	2043	PROTOTYPE: $
1802	ALIAS:	2044	ALIAS:
1803	usecount = 1	2045	usecount = 1
1804	CODE:	2046	CODE:
…		…
1808	case 1: RETVAL = coro->usecount; break;	2050	case 1: RETVAL = coro->usecount; break;
1809	}	2051	}
1810	OUTPUT:	2052	OUTPUT:
1811	RETVAL	2053	RETVAL
1812		2054
		2055	void
		2056	force_cctx ()
		2057	CODE:
		2058	struct coro *coro = SvSTATE (coro_current);
		2059	coro->cctx->idle_sp = 0;
		2060
		2061	void
		2062	swap_defsv (Coro::State self)
		2063	PROTOTYPE: $
		2064	ALIAS:
		2065	swap_defav = 1
		2066	CODE:
		2067	if (!self->slot)
		2068	croak ("cannot swap state with coroutine that has no saved state");
		2069	else
		2070	{
		2071	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2072	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2073
		2074	SV *tmp = *src; *src = *dst; *dst = tmp;
		2075	}
1813		2076
1814	MODULE = Coro::State PACKAGE = Coro	2077	MODULE = Coro::State PACKAGE = Coro
1815		2078
1816	BOOT:	2079	BOOT:
1817	{	2080	{
1818	int i;	2081	int i;
1819		2082
1820	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1821	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1822	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2083	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2084	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2085	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1823		2086
1824	coro_current = coro_get_sv ("Coro::current", FALSE);	2087	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1825	SvREADONLY_on (coro_current);	2088	SvREADONLY_on (coro_current);
1826		2089
1827	coro_stash = gv_stashpv ("Coro", TRUE);	2090	coro_stash = gv_stashpv ("Coro", TRUE);
1828		2091
1829	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2092	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1857	void	2120	void
1858	_set_current (SV *current)	2121	_set_current (SV *current)
1859	PROTOTYPE: $	2122	PROTOTYPE: $
1860	CODE:	2123	CODE:
1861	SvREFCNT_dec (SvRV (coro_current));	2124	SvREFCNT_dec (SvRV (coro_current));
1862	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2125	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2126
		2127	void
		2128	_set_readyhook (SV *hook)
		2129	PROTOTYPE: $
		2130	CODE:
		2131	LOCK;
		2132	SvREFCNT_dec (coro_readyhook);
		2133	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2134	UNLOCK;
1863		2135
1864	int	2136	int
1865	prio (Coro::State coro, int newprio = 0)	2137	prio (Coro::State coro, int newprio = 0)
1866	ALIAS:	2138	ALIAS:
1867	nice = 1	2139	nice = 1
…		…
1912	CODE:	2184	CODE:
1913	{	2185	{
1914	struct coro *coro = SvSTATE (coro_current);	2186	struct coro *coro = SvSTATE (coro_current);
1915	HV *hv = (HV *)SvRV (coro_current);	2187	HV *hv = (HV *)SvRV (coro_current);
1916	AV *defav = GvAV (PL_defgv);	2188	AV *defav = GvAV (PL_defgv);
1917	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);	2189	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1918	AV *invoke_av;	2190	AV *invoke_av;
1919	int i, len;	2191	int i, len;
1920		2192
1921	if (!invoke)	2193	if (!invoke)
		2194	{
		2195	SV *old = PL_diehook;
		2196	PL_diehook = 0;
		2197	SvREFCNT_dec (old);
1922	croak ("\3async_pool terminate\2\n");	2198	croak ("\3async_pool terminate\2\n");
		2199	}
1923		2200
1924	SvREFCNT_dec (coro->saved_deffh);	2201	SvREFCNT_dec (coro->saved_deffh);
1925	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2202	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1926		2203
1927	hv_store (hv, "desc", sizeof ("desc") - 1,	2204	hv_store (hv, "desc", sizeof ("desc") - 1,
1928	newSVpvn (strpair ("[async_pool]")), 0);	2205	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1929		2206
1930	invoke_av = (AV *)SvRV (invoke);	2207	invoke_av = (AV *)SvRV (invoke);
1931	len = av_len (invoke_av);	2208	len = av_len (invoke_av);
1932		2209
1933	sv_setsv (cb, AvARRAY (invoke_av)[0]);	2210	sv_setsv (cb, AvARRAY (invoke_av)[0]);
1934		2211
1935	if (len > 0)	2212	if (len > 0)
1936	{	2213	{
1937	av_fill (defav, len - 1);	2214	av_fill (defav, len - 1);
1938	for (i = 0; i < len; ++i)	2215	for (i = 0; i < len; ++i)
1939	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2216	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1940	}	2217	}
1941		2218
1942	SvREFCNT_dec (invoke);	2219	SvREFCNT_dec (invoke);
1943	}	2220	}
1944		2221
…		…
1951	sv_setsv (cb, &PL_sv_undef);	2228	sv_setsv (cb, &PL_sv_undef);
1952		2229
1953	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2230	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1954	coro->saved_deffh = 0;	2231	coro->saved_deffh = 0;
1955		2232
1956	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2233	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1957	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2234	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2235	{
		2236	SV *old = PL_diehook;
		2237	PL_diehook = 0;
		2238	SvREFCNT_dec (old);
1958	croak ("\3async_pool terminate\2\n");	2239	croak ("\3async_pool terminate\2\n");
		2240	}
1959		2241
1960	av_clear (GvAV (PL_defgv));	2242	av_clear (GvAV (PL_defgv));
1961	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),	2243	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1962	newSVpvn (strpair ("[async_pool idle]")), 0);	2244	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1963		2245
1964	coro->prio = 0;	2246	coro->prio = 0;
1965		2247
1966	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2248	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1967	api_trace (coro_current, 0);	2249	api_trace (coro_current, 0);
1968		2250
1969	av_push (av_async_pool, newSVsv (coro_current));	2251	av_push (av_async_pool, newSVsv (coro_current));
1970	}	2252	}
1971		2253
		2254	#if 0
		2255
		2256	void
		2257	_generator_call (...)
		2258	PROTOTYPE: @
		2259	PPCODE:
		2260	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2261	xxxx
		2262	abort ();
		2263
		2264	SV *
		2265	gensub (SV *sub, ...)
		2266	PROTOTYPE: &;@
		2267	CODE:
		2268	{
		2269	struct coro *coro;
		2270	MAGIC *mg;
		2271	CV *xcv;
		2272	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2273	int i;
		2274
		2275	CvGV (ncv) = CvGV (cv);
		2276	CvFILE (ncv) = CvFILE (cv);
		2277
		2278	Newz (0, coro, 1, struct coro);
		2279	coro->args = newAV ();
		2280	coro->flags = CF_NEW;
		2281
		2282	av_extend (coro->args, items - 1);
		2283	for (i = 1; i < items; i++)
		2284	av_push (coro->args, newSVsv (ST (i)));
		2285
		2286	CvISXSUB_on (ncv);
		2287	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2288
		2289	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2290
		2291	CvXSUB (ncv) = CvXSUB (xcv);
		2292	CvANON_on (ncv);
		2293
		2294	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2295	RETVAL = newRV_noinc ((SV *)ncv);
		2296	}
		2297	OUTPUT:
		2298	RETVAL
		2299
		2300	#endif
		2301
1972		2302
1973	MODULE = Coro::State PACKAGE = Coro::AIO	2303	MODULE = Coro::State PACKAGE = Coro::AIO
1974		2304
1975	SV *	2305	void
1976	_get_state ()	2306	_get_state (SV *self)
1977	CODE:	2307	PPCODE:
1978	{	2308	{
1979	struct io_state *data;	2309	AV *defav = GvAV (PL_defgv);
1980		2310	AV *av = newAV ();
		2311	int i;
1981	RETVAL = newSV (sizeof (struct io_state));	2312	SV *data_sv = newSV (sizeof (struct io_state));
1982	data = (struct io_state *)SvPVX (RETVAL);	2313	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1983	SvCUR_set (RETVAL, sizeof (struct io_state));	2314	SvCUR_set (data_sv, sizeof (struct io_state));
1984	SvPOK_only (RETVAL);	2315	SvPOK_only (data_sv);
1985		2316
1986	data->errorno = errno;	2317	data->errorno = errno;
1987	data->laststype = PL_laststype;	2318	data->laststype = PL_laststype;
1988	data->laststatval = PL_laststatval;	2319	data->laststatval = PL_laststatval;
1989	data->statcache = PL_statcache;	2320	data->statcache = PL_statcache;
		2321
		2322	av_extend (av, AvFILLp (defav) + 1 + 1);
		2323
		2324	for (i = 0; i <= AvFILLp (defav); ++i)
		2325	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2326
		2327	av_push (av, data_sv);
		2328
		2329	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2330
		2331	api_ready (self);
1990	}	2332	}
1991	OUTPUT:
1992	RETVAL
1993		2333
1994	void	2334	void
1995	_set_state (char *data_)	2335	_set_state (SV *state)
1996	PROTOTYPE: $	2336	PROTOTYPE: $
1997	CODE:	2337	PPCODE:
1998	{	2338	{
1999	struct io_state *data = (void *)data_;	2339	AV *av = (AV *)SvRV (state);
		2340	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2341	int i;
2000		2342
2001	errno = data->errorno;	2343	errno = data->errorno;
2002	PL_laststype = data->laststype;	2344	PL_laststype = data->laststype;
2003	PL_laststatval = data->laststatval;	2345	PL_laststatval = data->laststatval;
2004	PL_statcache = data->statcache;	2346	PL_statcache = data->statcache;
2005	}
2006		2347
		2348	EXTEND (SP, AvFILLp (av));
		2349	for (i = 0; i < AvFILLp (av); ++i)
		2350	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2351	}
		2352
		2353
		2354	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2355
		2356	BOOT:
		2357	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2358
		2359	SV *
		2360	_schedule (...)
		2361	PROTOTYPE: @
		2362	CODE:
		2363	{
		2364	static int incede;
		2365
		2366	api_cede_notself ();
		2367
		2368	++incede;
		2369	while (coro_nready >= incede && api_cede ())
		2370	;
		2371
		2372	sv_setsv (sv_activity, &PL_sv_undef);
		2373	if (coro_nready >= incede)
		2374	{
		2375	PUSHMARK (SP);
		2376	PUTBACK;
		2377	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2378	SPAGAIN;
		2379	}
		2380
		2381	--incede;
		2382	}
		2383
		2384
		2385	MODULE = Coro::State PACKAGE = PerlIO::cede
		2386
		2387	BOOT:
		2388	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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