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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.207 by root, Tue Oct 9 22:29:27 2007 UTC vs.
Revision 1.261 by root, Mon Nov 10 05:09:30 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
14	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
15		25
16	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
17	# include <unistd.h>	27	# include <unistd.h>
18	# include <sys/mman.h>	28	# include <sys/mman.h>
19	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
42	#else	52	#else
43	# define REGISTER_STACK(cctx,start,end)	53	# define REGISTER_STACK(cctx,start,end)
44	#endif	54	#endif
45		55
46	/* the maximum number of idle cctx that will be pooled */	56	/* the maximum number of idle cctx that will be pooled */
47	#define MAX_IDLE_CCTX 8	57	static int cctx_max_idle = 4;
48		58
49	#define PERL_VERSION_ATLEAST(a,b,c) \	59	#define PERL_VERSION_ATLEAST(a,b,c) \
50	(PERL_REVISION > (a) \	60	(PERL_REVISION > (a) \
51	|| (PERL_REVISION == (a) \	61	|| (PERL_REVISION == (a) \
52	&& (PERL_VERSION > (b) \	62	&& (PERL_VERSION > (b) \
…		…
71	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
72	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
73	# endif	83	# endif
74	#endif	84	#endif
75		85
		86	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
76	/* 5.8.7 */	104	/* 5.8.7 */
77	#ifndef SvRV_set	105	#ifndef SvRV_set
78	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
79	#endif
80
81	/* 5.8.8 */
82	#ifndef GV_NOTQUAL
83	# define GV_NOTQUAL 0
84	#endif
85	#ifndef newSV
86	# define newSV(l) NEWSV(0,l)
87	#endif	107	#endif
88		108
89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	109	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90	# undef CORO_STACKGUARD	110	# undef CORO_STACKGUARD
91	#endif	111	#endif
…		…
122	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
123		143
124	#include "CoroAPI.h"	144	#include "CoroAPI.h"
125		145
126	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
127	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
129	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
130	#else	155	#else
		156
131	# define LOCK (void)0	157	# define LOCK (void)0
132	# define UNLOCK (void)0	158	# define UNLOCK (void)0
133	#endif
134		159
135	#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
136		166
137	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
138	struct io_state	168	struct io_state
139	{	169	{
		170	AV *res;
140	int errorno;	171	int errorno;
141	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
142	int laststatval;	173	int laststatval;
143	Stat_t statcache;	174	Stat_t statcache;
144	};	175	};
145		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
146	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
147	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
148	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
149	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
150	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
151	static SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		186	static volatile struct coro *transfer_next;
		187
		188	struct transfer_args
		189	{
		190	struct coro *prev, *next;
		191	};
152		192
153	static GV *irsgv; /* $/ */	193	static GV *irsgv; /* $/ */
154	static GV *stdoutgv; /* *STDOUT */	194	static GV *stdoutgv; /* *STDOUT */
155		195	static SV *rv_diehook;
		196	static SV *rv_warnhook;
156	static HV *hv_sig; /* %SIG */	197	static HV *hv_sig; /* %SIG */
157	static SV *sv_diehook;
158	static SV *sv_warnhook;
159		198
160	/* async_pool helper stuff */	199	/* async_pool helper stuff */
161	static SV *sv_pool_rss;	200	static SV *sv_pool_rss;
162	static SV *sv_pool_size;	201	static SV *sv_pool_size;
163	static AV *av_async_pool;	202	static AV *av_async_pool;
		203
		204	/* Coro::AnyEvent */
		205	static SV *sv_activity;
164		206
165	static struct coro_cctx *cctx_first;	207	static struct coro_cctx *cctx_first;
166	static int cctx_count, cctx_idle;	208	static int cctx_count, cctx_idle;
167		209
168	enum {	210	enum {
…		…
186	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	228	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
187	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	229	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
188	JMPENV *top_env;	230	JMPENV *top_env;
189	coro_context cctx;	231	coro_context cctx;
190		232
		233	U32 gen;
191	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
192	int valgrind_id;	235	int valgrind_id;
193	#endif	236	#endif
194	unsigned char flags;	237	unsigned char flags;
195	} coro_cctx;	238	} coro_cctx;
…		…
254	#define PRIO_IDLE -3	297	#define PRIO_IDLE -3
255	#define PRIO_MIN -4	298	#define PRIO_MIN -4
256		299
257	/* for Coro.pm */	300	/* for Coro.pm */
258	static SV *coro_current;	301	static SV *coro_current;
		302	static SV *coro_readyhook;
259	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
260	static int coro_nready;	304	static int coro_nready;
261	static struct coro *coro_first;	305	static struct coro *coro_first;
262		306
263	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
264		308
265	static SV *	309	static SV *
266	coro_get_sv (const char *name, int create)	310	coro_get_sv (pTHX_ const char *name, int create)
267	{	311	{
268	#if PERL_VERSION_ATLEAST (5,9,0)	312	#if PERL_VERSION_ATLEAST (5,10,0)
269	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	313	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
270	get_sv (name, create);	314	get_sv (name, create);
271	#endif	315	#endif
272	return get_sv (name, create);	316	return get_sv (name, create);
273	}	317	}
274		318
275	static AV *	319	static AV *
276	coro_get_av (const char *name, int create)	320	coro_get_av (pTHX_ const char *name, int create)
277	{	321	{
278	#if PERL_VERSION_ATLEAST (5,9,0)	322	#if PERL_VERSION_ATLEAST (5,10,0)
279	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	323	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
280	get_av (name, create);	324	get_av (name, create);
281	#endif	325	#endif
282	return get_av (name, create);	326	return get_av (name, create);
283	}	327	}
284		328
285	static HV *	329	static HV *
286	coro_get_hv (const char *name, int create)	330	coro_get_hv (pTHX_ const char *name, int create)
287	{	331	{
288	#if PERL_VERSION_ATLEAST (5,9,0)	332	#if PERL_VERSION_ATLEAST (5,10,0)
289	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	333	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
290	get_hv (name, create);	334	get_hv (name, create);
291	#endif	335	#endif
292	return get_hv (name, create);	336	return get_hv (name, create);
293	}	337	}
…		…
298	AV *padlist = CvPADLIST (cv);	342	AV *padlist = CvPADLIST (cv);
299	AV *newpadlist, *newpad;	343	AV *newpadlist, *newpad;
300		344
301	newpadlist = newAV ();	345	newpadlist = newAV ();
302	AvREAL_off (newpadlist);	346	AvREAL_off (newpadlist);
303	#if PERL_VERSION_ATLEAST (5,9,0)	347	#if PERL_VERSION_ATLEAST (5,10,0)
304	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	348	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
305	#else	349	#else
306	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
307	#endif	351	#endif
308	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
309	--AvFILLp (padlist);	353	--AvFILLp (padlist);
310		354
311	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
312	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
313		357
314	return newpadlist;	358	return newpadlist;
315	}	359	}
316		360
…		…
346		390
347	/* casting is fun. */	391	/* casting is fun. */
348	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	392	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
349	free_padlist (aTHX_ padlist);	393	free_padlist (aTHX_ padlist);
350		394
351	SvREFCNT_dec (av);	395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
352		396
353	return 0;	397	return 0;
354	}	398	}
355		399
356	#define PERL_MAGIC_coro PERL_MAGIC_ext	400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		401	#define CORO_MAGIC_type_state PERL_MAGIC_ext
357		402
358	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	403	static MGVTBL coro_cv_vtbl = {
		404	0, 0, 0, 0,
		405	coro_cv_free
		406	};
359		407
360	#define CORO_MAGIC(cv) \	408	#define CORO_MAGIC(sv, type) \
361	SvMAGIC (cv) \	409	SvMAGIC (sv) \
362	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	410	? SvMAGIC (sv)->mg_type == type \
363	? SvMAGIC (cv) \	411	? SvMAGIC (sv) \
364	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	412	: mg_find (sv, type) \
365	: 0	413	: 0
		414
		415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
366		417
367	static struct coro *	418	static struct coro *
368	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
369	{	420	{
370	HV *stash;	421	HV *stash;
…		…
382	/* very slow, but rare, check */	433	/* very slow, but rare, check */
383	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	434	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
384	croak ("Coro::State object required");	435	croak ("Coro::State object required");
385	}	436	}
386		437
387	mg = CORO_MAGIC (coro);	438	mg = CORO_MAGIC_state (coro);
388	return (struct coro *)mg->mg_ptr;	439	return (struct coro *)mg->mg_ptr;
389	}	440	}
390		441
391	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	442	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
392		443
393	/* the next two functions merely cache the padlists */	444	/* the next two functions merely cache the padlists */
394	static void	445	static void
395	get_padlist (pTHX_ CV *cv)	446	get_padlist (pTHX_ CV *cv)
396	{	447	{
397	MAGIC *mg = CORO_MAGIC (cv);	448	MAGIC *mg = CORO_MAGIC_cv (cv);
398	AV *av;	449	AV *av;
399		450
400	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	451	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
401	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	452	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
402	else	453	else
403	{	454	{
404	#if CORO_PREFER_PERL_FUNCTIONS	455	#if CORO_PREFER_PERL_FUNCTIONS
405	/* this is probably cleaner, but also slower? */	456	/* this is probably cleaner? but also slower! */
		457	/* in practise, it seems to be less stable */
406	CV *cp = Perl_cv_clone (cv);	458	CV *cp = Perl_cv_clone (cv);
407	CvPADLIST (cv) = CvPADLIST (cp);	459	CvPADLIST (cv) = CvPADLIST (cp);
408	CvPADLIST (cp) = 0;	460	CvPADLIST (cp) = 0;
409	SvREFCNT_dec (cp);	461	SvREFCNT_dec (cp);
410	#else	462	#else
…		…
414	}	466	}
415		467
416	static void	468	static void
417	put_padlist (pTHX_ CV *cv)	469	put_padlist (pTHX_ CV *cv)
418	{	470	{
419	MAGIC *mg = CORO_MAGIC (cv);	471	MAGIC *mg = CORO_MAGIC_cv (cv);
420	AV *av;	472	AV *av;
421		473
422	if (expect_false (!mg))	474	if (expect_false (!mg))
423	{	475	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
424	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
425	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
426	mg->mg_virtual = &vtbl_coro;
427	mg->mg_obj = (SV *)newAV ();
428	}
429		476
430	av = (AV *)mg->mg_obj;	477	av = (AV *)mg->mg_obj;
431		478
432	if (expect_false (AvFILLp (av) >= AvMAX (av)))	479	if (expect_false (AvFILLp (av) >= AvMAX (av)))
433	av_extend (av, AvMAX (av) + 1);	480	av_extend (av, AvMAX (av) + 1);
…		…
451	GvSV (irsgv) = slot->irsgv;	498	GvSV (irsgv) = slot->irsgv;
452		499
453	#define VAR(name,type) PL_ ## name = slot->name;	500	#define VAR(name,type) PL_ ## name = slot->name;
454	# include "state.h"	501	# include "state.h"
455	#undef VAR	502	#undef VAR
456
457	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
458	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
459		503
460	{	504	{
461	dSP;	505	dSP;
462		506
463	CV *cv;	507	CV *cv;
…		…
502		546
503	if (expect_true (CvDEPTH (cv)))	547	if (expect_true (CvDEPTH (cv)))
504	{	548	{
505	EXTEND (SP, 3);	549	EXTEND (SP, 3);
506	PUSHs ((SV *)CvPADLIST (cv));	550	PUSHs ((SV *)CvPADLIST (cv));
507	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	551	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
508	PUSHs ((SV *)cv);	552	PUSHs ((SV *)cv);
509		553
510	CvDEPTH (cv) = 0;	554	CvDEPTH (cv) = 0;
511	get_padlist (aTHX_ cv);	555	get_padlist (aTHX_ cv);
512	}	556	}
…		…
592		636
593	New(54,PL_savestack,24,ANY);	637	New(54,PL_savestack,24,ANY);
594	PL_savestack_ix = 0;	638	PL_savestack_ix = 0;
595	PL_savestack_max = 24;	639	PL_savestack_max = 24;
596		640
597	#if !PERL_VERSION_ATLEAST (5,9,0)	641	#if !PERL_VERSION_ATLEAST (5,10,0)
598	New(54,PL_retstack,4,OP*);	642	New(54,PL_retstack,4,OP*);
599	PL_retstack_ix = 0;	643	PL_retstack_ix = 0;
600	PL_retstack_max = 4;	644	PL_retstack_max = 4;
601	#endif	645	#endif
602	}	646	}
…		…
604		648
605	/*	649	/*
606	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
607	*/	651	*/
608	static void	652	static void
609	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
610	{	654	{
611	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
612	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
613		657
614	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
625		669
626	Safefree (PL_tmps_stack);	670	Safefree (PL_tmps_stack);
627	Safefree (PL_markstack);	671	Safefree (PL_markstack);
628	Safefree (PL_scopestack);	672	Safefree (PL_scopestack);
629	Safefree (PL_savestack);	673	Safefree (PL_savestack);
630	#if !PERL_VERSION_ATLEAST (5,9,0)	674	#if !PERL_VERSION_ATLEAST (5,10,0)
631	Safefree (PL_retstack);	675	Safefree (PL_retstack);
632	#endif	676	#endif
633	}	677	}
634		678
635	static size_t	679	static size_t
…		…
651	#undef VAR	695	#undef VAR
652	}	696	}
653	else	697	else
654	slot = coro->slot;	698	slot = coro->slot;
655		699
		700	if (slot)
		701	{
656	rss += sizeof (slot->curstackinfo);	702	rss += sizeof (slot->curstackinfo);
657	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	703	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
658	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
659	rss += slot->tmps_max * sizeof (SV *);	705	rss += slot->tmps_max * sizeof (SV *);
660	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	706	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
661	rss += slot->scopestack_max * sizeof (I32);	707	rss += slot->scopestack_max * sizeof (I32);
662	rss += slot->savestack_max * sizeof (ANY);	708	rss += slot->savestack_max * sizeof (ANY);
663		709
664	#if !PERL_VERSION_ATLEAST (5,9,0)	710	#if !PERL_VERSION_ATLEAST (5,10,0)
665	rss += slot->retstack_max * sizeof (OP *);	711	rss += slot->retstack_max * sizeof (OP *);
666	#endif	712	#endif
		713	}
667	}	714	}
668		715
669	return rss;	716	return rss;
670	}	717	}
671		718
672	/** coroutine stack handling ************************************************/	719	/** coroutine stack handling ************************************************/
		720
		721	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		722	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		723	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		724
		725	/* apparently < 5.8.8 */
		726	#ifndef MgPV_nolen_const
		727	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		728	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		729	(const char*)(mg)->mg_ptr)
		730	#endif
		731
		732	/*
		733	* This overrides the default magic get method of %SIG elements.
		734	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		735	* and instead of tryign to save and restore the hash elements, we just provide
		736	* readback here.
		737	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		738	* not expecting this to actually change the hook. This is a potential problem
		739	* when a schedule happens then, but we ignore this.
		740	*/
		741	static int
		742	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		743	{
		744	const char *s = MgPV_nolen_const (mg);
		745
		746	if (*s == '_')
		747	{
		748	SV **svp = 0;
		749
		750	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		751	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		752
		753	if (svp)
		754	{
		755	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		756	return 0;
		757	}
		758	}
		759
		760	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		761	}
		762
		763	static int
		764	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		765	{
		766	const char *s = MgPV_nolen_const (mg);
		767
		768	if (*s == '_')
		769	{
		770	SV **svp = 0;
		771
		772	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		773	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		774
		775	if (svp)
		776	{
		777	SV *old = *svp;
		778	*svp = 0;
		779	SvREFCNT_dec (old);
		780	return 0;
		781	}
		782	}
		783
		784	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		785	}
		786
		787	static int
		788	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		789	{
		790	const char *s = MgPV_nolen_const (mg);
		791
		792	if (*s == '_')
		793	{
		794	SV **svp = 0;
		795
		796	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		797	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		798
		799	if (svp)
		800	{
		801	SV *old = *svp;
		802	*svp = newSVsv (sv);
		803	SvREFCNT_dec (old);
		804	return 0;
		805	}
		806	}
		807
		808	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		809	}
673		810
674	static void	811	static void
675	coro_setup (pTHX_ struct coro *coro)	812	coro_setup (pTHX_ struct coro *coro)
676	{	813	{
677	/*	814	/*
…		…
686	PL_curpm = 0;	823	PL_curpm = 0;
687	PL_curpad = 0;	824	PL_curpad = 0;
688	PL_localizing = 0;	825	PL_localizing = 0;
689	PL_dirty = 0;	826	PL_dirty = 0;
690	PL_restartop = 0;	827	PL_restartop = 0;
691	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);	828	#if PERL_VERSION_ATLEAST (5,10,0)
692	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);	829	PL_parser = 0;
		830	#endif
		831
		832	/* recreate the die/warn hooks */
		833	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		834	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
693		835
694	GvSV (PL_defgv) = newSV (0);	836	GvSV (PL_defgv) = newSV (0);
695	GvAV (PL_defgv) = coro->args; coro->args = 0;	837	GvAV (PL_defgv) = coro->args; coro->args = 0;
696	GvSV (PL_errgv) = newSV (0);	838	GvSV (PL_errgv) = newSV (0);
697	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	839	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
698	PL_rs = newSVsv (GvSV (irsgv));	840	PL_rs = newSVsv (GvSV (irsgv));
699	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	841	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
700		842
701	{	843	{
702	dSP;	844	dSP;
703	LOGOP myop;	845	UNOP myop;
704		846
705	Zero (&myop, 1, LOGOP);	847	Zero (&myop, 1, UNOP);
706	myop.op_next = Nullop;	848	myop.op_next = Nullop;
707	myop.op_flags = OPf_WANT_VOID;	849	myop.op_flags = OPf_WANT_VOID;
708		850
709	PUSHMARK (SP);	851	PUSHMARK (SP);
710	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	852	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
712	PL_op = (OP *)&myop;	854	PL_op = (OP *)&myop;
713	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	855	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
714	SPAGAIN;	856	SPAGAIN;
715	}	857	}
716		858
717	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */	859	/* this newly created coroutine might be run on an existing cctx which most
		860	* likely was suspended in set_stacklevel, called from entersub.
		861	* set_stacklevel doesn't do anything on return, but entersub does LEAVE,
		862	* so we ENTER here for symmetry.
		863	*/
		864	ENTER;
718	}	865	}
719		866
720	static void	867	static void
721	coro_destroy (pTHX_ struct coro *coro)	868	coro_destruct (pTHX_ struct coro *coro)
722	{	869	{
723	if (!IN_DESTRUCT)	870	if (!IN_DESTRUCT)
724	{	871	{
725	/* restore all saved variables and stuff */	872	/* restore all saved variables and stuff */
726	LEAVE_SCOPE (0);	873	LEAVE_SCOPE (0);
…		…
748	SvREFCNT_dec (PL_warnhook);	895	SvREFCNT_dec (PL_warnhook);
749		896
750	SvREFCNT_dec (coro->saved_deffh);	897	SvREFCNT_dec (coro->saved_deffh);
751	SvREFCNT_dec (coro->throw);	898	SvREFCNT_dec (coro->throw);
752		899
753	coro_destroy_stacks (aTHX);	900	coro_destruct_stacks (aTHX);
754	}	901	}
755		902
756	static void	903	static void
757	free_coro_mortal (pTHX)	904	free_coro_mortal (pTHX)
758	{	905	{
…		…
795	: cx->blk_gimme == G_SCALAR ? bot + 1	942	: cx->blk_gimme == G_SCALAR ? bot + 1
796	: bot;	943	: bot;
797		944
798	av_extend (av, top - bot);	945	av_extend (av, top - bot);
799	while (bot < top)	946	while (bot < top)
800	av_push (av, SvREFCNT_inc (*bot++));	947	av_push (av, SvREFCNT_inc_NN (*bot++));
801		948
802	PL_runops = RUNOPS_DEFAULT;	949	PL_runops = RUNOPS_DEFAULT;
803	ENTER;	950	ENTER;
804	SAVETMPS;	951	SAVETMPS;
805	EXTEND (SP, 3);	952	EXTEND (SP, 3);
806	PUSHMARK (SP);	953	PUSHMARK (SP);
807	PUSHs (&PL_sv_no);	954	PUSHs (&PL_sv_no);
808	PUSHs (fullname);	955	PUSHs (fullname);
809	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	956	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
810	PUTBACK;	957	PUTBACK;
811	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	958	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
812	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	959	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
813	SPAGAIN;	960	SPAGAIN;
814	FREETMPS;	961	FREETMPS;
815	LEAVE;	962	LEAVE;
816	PL_runops = runops_trace;	963	PL_runops = runops_trace;
…		…
843	SAVETMPS;	990	SAVETMPS;
844	EXTEND (SP, 3);	991	EXTEND (SP, 3);
845	PUSHMARK (SP);	992	PUSHMARK (SP);
846	PUSHs (&PL_sv_yes);	993	PUSHs (&PL_sv_yes);
847	PUSHs (fullname);	994	PUSHs (fullname);
848	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	995	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
849	PUTBACK;	996	PUTBACK;
850	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	997	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
851	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	998	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
852	SPAGAIN;	999	SPAGAIN;
853	FREETMPS;	1000	FREETMPS;
854	LEAVE;	1001	LEAVE;
855	PL_runops = runops_trace;	1002	PL_runops = runops_trace;
…		…
869	PL_runops = RUNOPS_DEFAULT;	1016	PL_runops = RUNOPS_DEFAULT;
870	PUSHMARK (SP);	1017	PUSHMARK (SP);
871	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	1018	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
872	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	1019	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
873	PUTBACK;	1020	PUTBACK;
874	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);	1021	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
875	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1022	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
876	SPAGAIN;	1023	SPAGAIN;
877	FREETMPS;	1024	FREETMPS;
878	LEAVE;	1025	LEAVE;
879	PL_runops = runops_trace;	1026	PL_runops = runops_trace;
…		…
885		1032
886	TAINT_NOT;	1033	TAINT_NOT;
887	return 0;	1034	return 0;
888	}	1035	}
889		1036
		1037	static void
		1038	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1039	{
		1040	ta->prev = (struct coro *)cctx;
		1041	ta->next = 0;
		1042	}
		1043
890	/* inject a fake call to Coro::State::_cctx_init into the execution */	1044	/* inject a fake call to Coro::State::_cctx_init into the execution */
891	/* _cctx_init should be careful, as it could be called at almost any time */	1045	/* _cctx_init should be careful, as it could be called at almost any time */
892	/* during execution of a perl program */	1046	/* during execution of a perl program */
		1047	/* also initialises PL_top_env */
893	static void NOINLINE	1048	static void NOINLINE
894	cctx_prepare (pTHX_ coro_cctx *cctx)	1049	cctx_prepare (pTHX_ coro_cctx *cctx)
895	{	1050	{
896	dSP;	1051	dSP;
897	LOGOP myop;	1052	UNOP myop;
898		1053
899	PL_top_env = &PL_start_env;	1054	PL_top_env = &PL_start_env;
900		1055
901	if (cctx->flags & CC_TRACE)	1056	if (cctx->flags & CC_TRACE)
902	PL_runops = runops_trace;	1057	PL_runops = runops_trace;
903		1058
904	Zero (&myop, 1, LOGOP);	1059	Zero (&myop, 1, UNOP);
905	myop.op_next = PL_op;	1060	myop.op_next = PL_op;
906	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1061	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
907		1062
908	PUSHMARK (SP);	1063	PUSHMARK (SP);
909	EXTEND (SP, 2);	1064	EXTEND (SP, 2);
910	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1065	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
911	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1066	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
912	PUTBACK;	1067	PUTBACK;
913	PL_op = (OP *)&myop;	1068	PL_op = (OP *)&myop;
914	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1069	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
915	SPAGAIN;	1070	SPAGAIN;
916	}	1071	}
917		1072
		1073	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
		1074	static void
		1075	transfer_tail (void)
		1076	{
		1077	struct coro *next = (struct coro *)transfer_next;
		1078	transfer_next = 0; //D for temporary assertion in transfer
		1079	assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
		1080
		1081	free_coro_mortal (aTHX);
		1082	UNLOCK;
		1083
		1084	if (expect_false (next->throw))
		1085	{
		1086	SV *exception = sv_2mortal (next->throw);
		1087
		1088	next->throw = 0;
		1089	sv_setsv (ERRSV, exception);
		1090	croak (0);
		1091	}
		1092	}
		1093
918	/*	1094	/*
919	* this is a _very_ stripped down perl interpreter ;)	1095	* this is a _very_ stripped down perl interpreter ;)
920	*/	1096	*/
921	static void	1097	static void
922	cctx_run (void *arg)	1098	cctx_run (void *arg)
923	{	1099	{
		1100	#ifdef USE_ITHREADS
		1101	# if CORO_PTHREAD
		1102	PERL_SET_CONTEXT (coro_thx);
		1103	# endif
		1104	#endif
		1105	{
924	dTHX;	1106	dTHX;
925		1107
926	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1108	/* entersub called ENTER, but we never 'returned', undo that here */
927	UNLOCK;	1109	LEAVE;
928		1110
929	/* we now skip the entersub that lead to transfer() */	1111	/* we now skip the entersub that did lead to transfer() */
930	PL_op = PL_op->op_next;	1112	PL_op = PL_op->op_next;
931		1113
932	/* inject a fake subroutine call to cctx_init */	1114	/* inject a fake subroutine call to cctx_init */
933	cctx_prepare (aTHX_ (coro_cctx *)arg);	1115	cctx_prepare (aTHX_ (coro_cctx *)arg);
934		1116
		1117	/* cctx_run is the alternative tail of transfer() */
		1118	transfer_tail ();
		1119
935	/* somebody or something will hit me for both perl_run and PL_restartop */	1120	/* somebody or something will hit me for both perl_run and PL_restartop */
936	PL_restartop = PL_op;	1121	PL_restartop = PL_op;
937	perl_run (PL_curinterp);	1122	perl_run (PL_curinterp);
938		1123
939	/*	1124	/*
940	* If perl-run returns we assume exit() was being called or the coro	1125	* If perl-run returns we assume exit() was being called or the coro
941	* fell off the end, which seems to be the only valid (non-bug)	1126	* fell off the end, which seems to be the only valid (non-bug)
942	* reason for perl_run to return. We try to exit by jumping to the	1127	* reason for perl_run to return. We try to exit by jumping to the
943	* bootstrap-time "top" top_env, as we cannot restore the "main"	1128	* bootstrap-time "top" top_env, as we cannot restore the "main"
944	* coroutine as Coro has no such concept	1129	* coroutine as Coro has no such concept
945	*/	1130	*/
946	PL_top_env = main_top_env;	1131	PL_top_env = main_top_env;
947	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1132	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1133	}
948	}	1134	}
949		1135
950	static coro_cctx *	1136	static coro_cctx *
951	cctx_new ()	1137	cctx_new ()
952	{	1138	{
953	coro_cctx *cctx;	1139	coro_cctx *cctx;
		1140
		1141	++cctx_count;
		1142	New (0, cctx, 1, coro_cctx);
		1143
		1144	cctx->gen = cctx_gen;
		1145	cctx->flags = 0;
		1146	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1147
		1148	return cctx;
		1149	}
		1150
		1151	/* create a new cctx only suitable as source */
		1152	static coro_cctx *
		1153	cctx_new_empty ()
		1154	{
		1155	coro_cctx *cctx = cctx_new ();
		1156
		1157	cctx->sptr = 0;
		1158	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1159
		1160	return cctx;
		1161	}
		1162
		1163	/* create a new cctx suitable as destination/running a perl interpreter */
		1164	static coro_cctx *
		1165	cctx_new_run ()
		1166	{
		1167	coro_cctx *cctx = cctx_new ();
954	void *stack_start;	1168	void *stack_start;
955	size_t stack_size;	1169	size_t stack_size;
956		1170
957	++cctx_count;
958
959	Newz (0, cctx, 1, coro_cctx);
960
961	#if HAVE_MMAP	1171	#if HAVE_MMAP
962	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1172	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
963	/* mmap supposedly does allocate-on-write for us */	1173	/* mmap supposedly does allocate-on-write for us */
964	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1174	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
965		1175
966	if (cctx->sptr != (void *)-1)	1176	if (cctx->sptr != (void *)-1)
967	{	1177	{
…		…
973	cctx->flags |= CC_MAPPED;	1183	cctx->flags |= CC_MAPPED;
974	}	1184	}
975	else	1185	else
976	#endif	1186	#endif
977	{	1187	{
978	cctx->ssize = coro_stacksize * (long)sizeof (long);	1188	cctx->ssize = cctx_stacksize * (long)sizeof (long);
979	New (0, cctx->sptr, coro_stacksize, long);	1189	New (0, cctx->sptr, cctx_stacksize, long);
980		1190
981	if (!cctx->sptr)	1191	if (!cctx->sptr)
982	{	1192	{
983	perror ("FATAL: unable to allocate stack for coroutine");	1193	perror ("FATAL: unable to allocate stack for coroutine");
984	_exit (EXIT_FAILURE);	1194	_exit (EXIT_FAILURE);
…		…
999	{	1209	{
1000	if (!cctx)	1210	if (!cctx)
1001	return;	1211	return;
1002		1212
1003	--cctx_count;	1213	--cctx_count;
		1214	coro_destroy (&cctx->cctx);
1004		1215
		1216	/* coro_transfer creates new, empty cctx's */
		1217	if (cctx->sptr)
		1218	{
1005	#if CORO_USE_VALGRIND	1219	#if CORO_USE_VALGRIND
1006	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1220	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1007	#endif	1221	#endif
1008		1222
1009	#if HAVE_MMAP	1223	#if HAVE_MMAP
1010	if (cctx->flags & CC_MAPPED)	1224	if (cctx->flags & CC_MAPPED)
1011	munmap (cctx->sptr, cctx->ssize);	1225	munmap (cctx->sptr, cctx->ssize);
1012	else	1226	else
1013	#endif	1227	#endif
1014	Safefree (cctx->sptr);	1228	Safefree (cctx->sptr);
		1229	}
1015		1230
1016	Safefree (cctx);	1231	Safefree (cctx);
1017	}	1232	}
1018		1233
1019	/* wether this cctx should be destructed */	1234	/* wether this cctx should be destructed */
1020	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1235	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1021		1236
1022	static coro_cctx *	1237	static coro_cctx *
1023	cctx_get (pTHX)	1238	cctx_get (pTHX)
1024	{	1239	{
1025	while (expect_true (cctx_first))	1240	while (expect_true (cctx_first))
…		…
1032	return cctx;	1247	return cctx;
1033		1248
1034	cctx_destroy (cctx);	1249	cctx_destroy (cctx);
1035	}	1250	}
1036		1251
1037	return cctx_new ();	1252	return cctx_new_run ();
1038	}	1253	}
1039		1254
1040	static void	1255	static void
1041	cctx_put (coro_cctx *cctx)	1256	cctx_put (coro_cctx *cctx)
1042	{	1257	{
		1258	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1259
1043	/* free another cctx if overlimit */	1260	/* free another cctx if overlimit */
1044	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1261	if (expect_false (cctx_idle >= cctx_max_idle))
1045	{	1262	{
1046	coro_cctx *first = cctx_first;	1263	coro_cctx *first = cctx_first;
1047	cctx_first = first->next;	1264	cctx_first = first->next;
1048	--cctx_idle;	1265	--cctx_idle;
1049		1266
…		…
1069	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1286	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1070		1287
1071	if (expect_false (next->flags & CF_DESTROYED))	1288	if (expect_false (next->flags & CF_DESTROYED))
1072	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1289	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1073		1290
1074	if (
1075	#if PERL_VERSION_ATLEAST (5,9,0)	1291	#if !PERL_VERSION_ATLEAST (5,10,0)
1076	expect_false (PL_parser)
1077	#else
1078	expect_false (PL_lex_state != LEX_NOTPARSING)	1292	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1079	#endif
1080	)
1081	croak ("Coro::State::transfer called while parsing, but this is not supported");	1293	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1294	#endif
1082	}	1295	}
1083	}	1296	}
1084		1297
1085	/* always use the TRANSFER macro */	1298	/* always use the TRANSFER macro */
1086	static void NOINLINE	1299	static void NOINLINE
1087	transfer (pTHX_ struct coro *prev, struct coro *next)	1300	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1088	{	1301	{
1089	dSTACKLEVEL;	1302	dSTACKLEVEL;
1090		1303
1091	/* sometimes transfer is only called to set idle_sp */	1304	/* sometimes transfer is only called to set idle_sp */
1092	if (expect_false (!next))	1305	if (expect_false (!next))
…		…
1098	{	1311	{
1099	coro_cctx *prev__cctx;	1312	coro_cctx *prev__cctx;
1100		1313
1101	if (expect_false (prev->flags & CF_NEW))	1314	if (expect_false (prev->flags & CF_NEW))
1102	{	1315	{
1103	/* create a new empty context */	1316	/* create a new empty/source context */
1104	Newz (0, prev->cctx, 1, coro_cctx);	1317	prev->cctx = cctx_new_empty ();
1105	prev->flags &= ~CF_NEW;	1318	prev->flags &= ~CF_NEW;
1106	prev->flags |= CF_RUNNING;	1319	prev->flags |= CF_RUNNING;
1107	}	1320	}
1108		1321
1109	prev->flags &= ~CF_RUNNING;	1322	prev->flags &= ~CF_RUNNING;
1110	next->flags |= CF_RUNNING;	1323	next->flags |= CF_RUNNING;
1111		1324
1112	LOCK;	1325	LOCK;
		1326
		1327	/* first get rid of the old state */
		1328	save_perl (aTHX_ prev);
1113		1329
1114	if (expect_false (next->flags & CF_NEW))	1330	if (expect_false (next->flags & CF_NEW))
1115	{	1331	{
1116	/* need to start coroutine */	1332	/* need to start coroutine */
1117	next->flags &= ~CF_NEW;	1333	next->flags &= ~CF_NEW;
1118	/* first get rid of the old state */
1119	save_perl (aTHX_ prev);
1120	/* setup coroutine call */	1334	/* setup coroutine call */
1121	coro_setup (aTHX_ next);	1335	coro_setup (aTHX_ next);
1122	}	1336	}
1123	else	1337	else
1124	{
1125	/* coroutine already started */
1126	save_perl (aTHX_ prev);
1127	load_perl (aTHX_ next);	1338	load_perl (aTHX_ next);
1128	}
1129		1339
1130	prev__cctx = prev->cctx;	1340	prev__cctx = prev->cctx;
1131		1341
1132	/* possibly "free" the cctx */	1342	/* possibly untie and reuse the cctx */
1133	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1343	if (expect_true (
		1344	prev__cctx->idle_sp == STACKLEVEL
		1345	&& !(prev__cctx->flags & CC_TRACE)
		1346	&& !force_cctx
		1347	))
1134	{	1348	{
1135	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1349	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1136	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1350	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1137		1351
1138	prev->cctx = 0;	1352	prev->cctx = 0;
…		…
1148		1362
1149	++next->usecount;	1363	++next->usecount;
1150		1364
1151	if (expect_true (!next->cctx))	1365	if (expect_true (!next->cctx))
1152	next->cctx = cctx_get (aTHX);	1366	next->cctx = cctx_get (aTHX);
		1367
		1368	assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D
		1369	transfer_next = next;
1153		1370
1154	if (expect_false (prev__cctx != next->cctx))	1371	if (expect_false (prev__cctx != next->cctx))
1155	{	1372	{
1156	prev__cctx->top_env = PL_top_env;	1373	prev__cctx->top_env = PL_top_env;
1157	PL_top_env = next->cctx->top_env;	1374	PL_top_env = next->cctx->top_env;
1158	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1375	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1159	}	1376	}
1160		1377
1161	free_coro_mortal (aTHX);	1378	transfer_tail ();
1162	UNLOCK;
1163
1164	if (expect_false (prev->throw || next->throw))
1165	{
1166	struct coro *coro = SvSTATE (coro_current);
1167
1168	if (coro->throw)
1169	{
1170	SV *exception = coro->throw;
1171	coro->throw = 0;
1172	sv_setsv (ERRSV, exception);
1173	croak (0);
1174	}
1175	}
1176	}	1379	}
1177	}	1380	}
1178		1381
1179	struct transfer_args
1180	{
1181	struct coro *prev, *next;
1182	};
1183
1184	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1382	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1185	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1383	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1186		1384
1187	/** high level stuff ********************************************************/	1385	/** high level stuff ********************************************************/
1188		1386
1189	static int	1387	static int
…		…
1213	croak ("FATAL: tried to destroy currently running coroutine");	1411	croak ("FATAL: tried to destroy currently running coroutine");
1214		1412
1215	save_perl (aTHX_ &temp);	1413	save_perl (aTHX_ &temp);
1216	load_perl (aTHX_ coro);	1414	load_perl (aTHX_ coro);
1217		1415
1218	coro_destroy (aTHX_ coro);	1416	coro_destruct (aTHX_ coro);
1219		1417
1220	load_perl (aTHX_ &temp);	1418	load_perl (aTHX_ &temp);
1221		1419
1222	coro->slot = 0;	1420	coro->slot = 0;
1223	}	1421	}
…		…
1283	{	1481	{
1284	dTHX;	1482	dTHX;
1285	struct transfer_args ta;	1483	struct transfer_args ta;
1286		1484
1287	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1485	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1288	TRANSFER (ta);	1486	TRANSFER (ta, 1);
1289	}	1487	}
1290		1488
1291	/** Coro ********************************************************************/	1489	/** Coro ********************************************************************/
1292		1490
1293	static void	1491	static void
…		…
1295	{	1493	{
1296	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1494	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1297	}	1495	}
1298		1496
1299	static SV *	1497	static SV *
1300	coro_deq (pTHX_ int min_prio)	1498	coro_deq (pTHX)
1301	{	1499	{
1302	int prio = PRIO_MAX - PRIO_MIN;	1500	int prio;
1303		1501
1304	min_prio -= PRIO_MIN;
1305	if (min_prio < 0)
1306	min_prio = 0;
1307
1308	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1502	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1309	if (AvFILLp (coro_ready [prio]) >= 0)	1503	if (AvFILLp (coro_ready [prio]) >= 0)
1310	return av_shift (coro_ready [prio]);	1504	return av_shift (coro_ready [prio]);
1311		1505
1312	return 0;	1506	return 0;
1313	}	1507	}
…		…
1315	static int	1509	static int
1316	api_ready (SV *coro_sv)	1510	api_ready (SV *coro_sv)
1317	{	1511	{
1318	dTHX;	1512	dTHX;
1319	struct coro *coro;	1513	struct coro *coro;
		1514	SV *sv_hook;
		1515	void (*xs_hook)(void);
1320		1516
1321	if (SvROK (coro_sv))	1517	if (SvROK (coro_sv))
1322	coro_sv = SvRV (coro_sv);	1518	coro_sv = SvRV (coro_sv);
1323		1519
1324	coro = SvSTATE (coro_sv);	1520	coro = SvSTATE (coro_sv);
…		…
1327	return 0;	1523	return 0;
1328		1524
1329	coro->flags |= CF_READY;	1525	coro->flags |= CF_READY;
1330		1526
1331	LOCK;	1527	LOCK;
		1528
		1529	sv_hook = coro_nready ? 0 : coro_readyhook;
		1530	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1531
1332	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1532	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1333	++coro_nready;	1533	++coro_nready;
		1534
1334	UNLOCK;	1535	UNLOCK;
		1536
		1537	if (sv_hook)
		1538	{
		1539	dSP;
		1540
		1541	ENTER;
		1542	SAVETMPS;
		1543
		1544	PUSHMARK (SP);
		1545	PUTBACK;
		1546	call_sv (sv_hook, G_DISCARD);
		1547	SPAGAIN;
		1548
		1549	FREETMPS;
		1550	LEAVE;
		1551	}
		1552
		1553	if (xs_hook)
		1554	xs_hook ();
1335		1555
1336	return 1;	1556	return 1;
1337	}	1557	}
1338		1558
1339	static int	1559	static int
…		…
1349	SV *prev_sv, *next_sv;	1569	SV *prev_sv, *next_sv;
1350		1570
1351	for (;;)	1571	for (;;)
1352	{	1572	{
1353	LOCK;	1573	LOCK;
1354	next_sv = coro_deq (aTHX_ PRIO_MIN);	1574	next_sv = coro_deq (aTHX);
1355		1575
1356	/* nothing to schedule: call the idle handler */	1576	/* nothing to schedule: call the idle handler */
1357	if (expect_false (!next_sv))	1577	if (expect_false (!next_sv))
1358	{	1578	{
1359	dSP;	1579	dSP;
…		…
1363	SAVETMPS;	1583	SAVETMPS;
1364		1584
1365	PUSHMARK (SP);	1585	PUSHMARK (SP);
1366	PUTBACK;	1586	PUTBACK;
1367	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1587	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1588	SPAGAIN;
1368		1589
1369	FREETMPS;	1590	FREETMPS;
1370	LEAVE;	1591	LEAVE;
1371	continue;	1592	continue;
1372	}	1593	}
…		…
1376	/* cannot transfer to destroyed coros, skip and look for next */	1597	/* cannot transfer to destroyed coros, skip and look for next */
1377	if (expect_false (ta->next->flags & CF_DESTROYED))	1598	if (expect_false (ta->next->flags & CF_DESTROYED))
1378	{	1599	{
1379	UNLOCK;	1600	UNLOCK;
1380	SvREFCNT_dec (next_sv);	1601	SvREFCNT_dec (next_sv);
1381	/* coro_nready is already taken care of by destroy */	1602	/* coro_nready has already been taken care of by destroy */
1382	continue;	1603	continue;
1383	}	1604	}
1384		1605
1385	--coro_nready;	1606	--coro_nready;
1386	UNLOCK;	1607	UNLOCK;
…		…
1427	{	1648	{
1428	dTHX;	1649	dTHX;
1429	struct transfer_args ta;	1650	struct transfer_args ta;
1430		1651
1431	prepare_schedule (aTHX_ &ta);	1652	prepare_schedule (aTHX_ &ta);
1432	TRANSFER (ta);	1653	TRANSFER (ta, 1);
1433	}	1654	}
1434		1655
1435	static int	1656	static int
1436	api_cede (void)	1657	api_cede (void)
1437	{	1658	{
…		…
1440		1661
1441	prepare_cede (aTHX_ &ta);	1662	prepare_cede (aTHX_ &ta);
1442		1663
1443	if (expect_true (ta.prev != ta.next))	1664	if (expect_true (ta.prev != ta.next))
1444	{	1665	{
1445	TRANSFER (ta);	1666	TRANSFER (ta, 1);
1446	return 1;	1667	return 1;
1447	}	1668	}
1448	else	1669	else
1449	return 0;	1670	return 0;
1450	}	1671	}
…		…
1455	dTHX;	1676	dTHX;
1456	struct transfer_args ta;	1677	struct transfer_args ta;
1457		1678
1458	if (prepare_cede_notself (aTHX_ &ta))	1679	if (prepare_cede_notself (aTHX_ &ta))
1459	{	1680	{
1460	TRANSFER (ta);	1681	TRANSFER (ta, 1);
1461	return 1;	1682	return 1;
1462	}	1683	}
1463	else	1684	else
1464	return 0;	1685	return 0;
1465	}	1686	}
…		…
1471	struct coro *coro = SvSTATE (coro_sv);	1692	struct coro *coro = SvSTATE (coro_sv);
1472		1693
1473	if (flags & CC_TRACE)	1694	if (flags & CC_TRACE)
1474	{	1695	{
1475	if (!coro->cctx)	1696	if (!coro->cctx)
1476	coro->cctx = cctx_new ();	1697	coro->cctx = cctx_new_run ();
1477	else if (!(coro->cctx->flags & CC_TRACE))	1698	else if (!(coro->cctx->flags & CC_TRACE))
1478	croak ("cannot enable tracing on coroutine with custom stack");	1699	croak ("cannot enable tracing on coroutine with custom stack");
1479		1700
1480	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1701	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1481	}	1702	}
…		…
1488	else	1709	else
1489	coro->slot->runops = RUNOPS_DEFAULT;	1710	coro->slot->runops = RUNOPS_DEFAULT;
1490	}	1711	}
1491	}	1712	}
1492		1713
		1714	#if 0
		1715	static int
		1716	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1717	{
		1718	AV *padlist;
		1719	AV *av = (AV *)mg->mg_obj;
		1720
		1721	abort ();
		1722
		1723	return 0;
		1724	}
		1725
		1726	static MGVTBL coro_gensub_vtbl = {
		1727	0, 0, 0, 0,
		1728	coro_gensub_free
		1729	};
		1730	#endif
		1731
		1732	/*****************************************************************************/
		1733	/* PerlIO::cede */
		1734
		1735	typedef struct
		1736	{
		1737	PerlIOBuf base;
		1738	NV next, every;
		1739	} PerlIOCede;
		1740
		1741	static IV
		1742	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1743	{
		1744	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1745
		1746	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1747	self->next = nvtime () + self->every;
		1748
		1749	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1750	}
		1751
		1752	static SV *
		1753	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1754	{
		1755	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1756
		1757	return newSVnv (self->every);
		1758	}
		1759
		1760	static IV
		1761	PerlIOCede_flush (pTHX_ PerlIO *f)
		1762	{
		1763	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1764	double now = nvtime ();
		1765
		1766	if (now >= self->next)
		1767	{
		1768	api_cede ();
		1769	self->next = now + self->every;
		1770	}
		1771
		1772	return PerlIOBuf_flush (aTHX_ f);
		1773	}
		1774
		1775	static PerlIO_funcs PerlIO_cede =
		1776	{
		1777	sizeof(PerlIO_funcs),
		1778	"cede",
		1779	sizeof(PerlIOCede),
		1780	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1781	PerlIOCede_pushed,
		1782	PerlIOBuf_popped,
		1783	PerlIOBuf_open,
		1784	PerlIOBase_binmode,
		1785	PerlIOCede_getarg,
		1786	PerlIOBase_fileno,
		1787	PerlIOBuf_dup,
		1788	PerlIOBuf_read,
		1789	PerlIOBuf_unread,
		1790	PerlIOBuf_write,
		1791	PerlIOBuf_seek,
		1792	PerlIOBuf_tell,
		1793	PerlIOBuf_close,
		1794	PerlIOCede_flush,
		1795	PerlIOBuf_fill,
		1796	PerlIOBase_eof,
		1797	PerlIOBase_error,
		1798	PerlIOBase_clearerr,
		1799	PerlIOBase_setlinebuf,
		1800	PerlIOBuf_get_base,
		1801	PerlIOBuf_bufsiz,
		1802	PerlIOBuf_get_ptr,
		1803	PerlIOBuf_get_cnt,
		1804	PerlIOBuf_set_ptrcnt,
		1805	};
		1806
		1807
1493	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1808	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1494		1809
1495	PROTOTYPES: DISABLE	1810	PROTOTYPES: DISABLE
1496		1811
1497	BOOT:	1812	BOOT:
1498	{	1813	{
1499	#ifdef USE_ITHREADS	1814	#ifdef USE_ITHREADS
1500	MUTEX_INIT (&coro_mutex);	1815	MUTEX_INIT (&coro_lock);
		1816	# if CORO_PTHREAD
		1817	coro_thx = PERL_GET_CONTEXT;
		1818	# endif
1501	#endif	1819	#endif
1502	BOOT_PAGESIZE;	1820	BOOT_PAGESIZE;
1503		1821
1504	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1822	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1505	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1823	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1506		1824
		1825	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1826	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1827	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1828
1507	hv_sig = coro_get_hv ("SIG", TRUE);	1829	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1508	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1830	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1509	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);	1831	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1510
1511	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1512	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1513		1832
1514	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1833	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1515		1834
1516	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1835	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1517	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1836	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1522	main_top_env = PL_top_env;	1841	main_top_env = PL_top_env;
1523		1842
1524	while (main_top_env->je_prev)	1843	while (main_top_env->je_prev)
1525	main_top_env = main_top_env->je_prev;	1844	main_top_env = main_top_env->je_prev;
1526		1845
1527	coroapi.ver = CORO_API_VERSION;	1846	coroapi.ver = CORO_API_VERSION;
		1847	coroapi.rev = CORO_API_REVISION;
1528	coroapi.transfer = api_transfer;	1848	coroapi.transfer = api_transfer;
		1849
		1850	{
		1851	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1852
		1853	if (!svp) croak ("Time::HiRes is required");
		1854	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1855
		1856	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1857	}
1529		1858
1530	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1859	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1531	}	1860	}
1532		1861
1533	SV *	1862	SV *
1534	new (char *klass, ...)	1863	new (char *klass, ...)
1535	CODE:	1864	CODE:
1536	{	1865	{
1537	struct coro *coro;	1866	struct coro *coro;
		1867	MAGIC *mg;
1538	HV *hv;	1868	HV *hv;
1539	int i;	1869	int i;
1540		1870
1541	Newz (0, coro, 1, struct coro);	1871	Newz (0, coro, 1, struct coro);
1542	coro->args = newAV ();	1872	coro->args = newAV ();
…		…
1545	if (coro_first) coro_first->prev = coro;	1875	if (coro_first) coro_first->prev = coro;
1546	coro->next = coro_first;	1876	coro->next = coro_first;
1547	coro_first = coro;	1877	coro_first = coro;
1548		1878
1549	coro->hv = hv = newHV ();	1879	coro->hv = hv = newHV ();
1550	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1880	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1881	mg->mg_flags |= MGf_DUP;
1551	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1882	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1552		1883
1553	av_extend (coro->args, items - 1);	1884	av_extend (coro->args, items - 1);
1554	for (i = 1; i < items; i++)	1885	for (i = 1; i < items; i++)
1555	av_push (coro->args, newSVsv (ST (i)));	1886	av_push (coro->args, newSVsv (ST (i)));
…		…
1561	# function to increase chances that they all will call transfer with the same	1892	# function to increase chances that they all will call transfer with the same
1562	# stack offset	1893	# stack offset
1563	void	1894	void
1564	_set_stacklevel (...)	1895	_set_stacklevel (...)
1565	ALIAS:	1896	ALIAS:
1566	Coro::State::transfer = 1	1897	Coro::State::transfer = 1
1567	Coro::schedule = 2	1898	Coro::schedule = 2
1568	Coro::cede = 3	1899	Coro::cede = 3
1569	Coro::cede_notself = 4	1900	Coro::cede_notself = 4
1570	Coro::Event::next = 5
1571	Coro::Event::next_cancel = 6
1572	PPCODE:	1901	CODE:
1573	{	1902	{
1574	struct transfer_args ta;	1903	struct transfer_args ta;
1575	int repeat = 0;
1576		1904
1577	do	1905	PUTBACK;
		1906	switch (ix)
1578	{	1907	{
1579	switch (ix)
1580	{
1581	case 0:	1908	case 0:
1582	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1909	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1583	ta.next = 0;
1584	break;	1910	break;
1585		1911
1586	case 1:	1912	case 1:
1587	if (items != 2)	1913	if (items != 2)
1588	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1914	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1589		1915
1590	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1916	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1591	break;	1917	break;
1592		1918
1593	case 2:	1919	case 2:
1594	prepare_schedule (aTHX_ &ta);	1920	prepare_schedule (aTHX_ &ta);
1595	break;	1921	break;
1596		1922
1597	case 3:	1923	case 3:
1598	prepare_cede (aTHX_ &ta);	1924	prepare_cede (aTHX_ &ta);
1599	break;	1925	break;
1600		1926
1601	case 4:	1927	case 4:
1602	if (!prepare_cede_notself (aTHX_ &ta))	1928	if (!prepare_cede_notself (aTHX_ &ta))
1603	XSRETURN_EMPTY;	1929	XSRETURN_EMPTY;
1604		1930
1605	break;	1931	break;
1606
1607	case 5:
1608	case 6:
1609	if (items != 1)
1610	croak ("Coro::Event::next (watcher) expects one argument, not %d", items);
1611
1612	{
1613	SV *ev = coroapi.coro_event_next (ST (0), ix == 6, GIMME_V != G_VOID);
1614
1615	if (ev)
1616	{
1617	if (GIMME_V != G_VOID)
1618	{
1619	XPUSHs (ev);
1620	XSRETURN (1);
1621	}
1622	else
1623	XSRETURN_EMPTY;
1624	}
1625	}
1626
1627	prepare_schedule (aTHX_ &ta);
1628	repeat = 1;
1629	break;
1630	}
1631
1632	BARRIER;
1633	TRANSFER (ta);
1634	BARRIER;
1635	}	1932	}
1636	while (repeat);	1933	SPAGAIN;
1637		1934
1638	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))	1935	BARRIER;
1639	XSRETURN_YES;	1936	PUTBACK;
		1937	TRANSFER (ta, 0);
		1938	SPAGAIN; /* might be the sp of a different coroutine now */
		1939	/* be extra careful not to ever do anything after TRANSFER */
1640	}	1940	}
1641		1941
1642	bool	1942	bool
1643	_destroy (SV *coro_sv)	1943	_destroy (SV *coro_sv)
1644	CODE:	1944	CODE:
1645	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1945	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1646	OUTPUT:	1946	OUTPUT:
1647	RETVAL	1947	RETVAL
1648		1948
1649	void	1949	void
1650	_exit (code)	1950	_exit (int code)
1651	int code
1652	PROTOTYPE: $	1951	PROTOTYPE: $
1653	CODE:	1952	CODE:
1654	_exit (code);	1953	_exit (code);
1655		1954
1656	int	1955	int
1657	cctx_stacksize (int new_stacksize = 0)	1956	cctx_stacksize (int new_stacksize = 0)
1658	CODE:	1957	CODE:
1659	RETVAL = coro_stacksize;	1958	RETVAL = cctx_stacksize;
1660	if (new_stacksize)	1959	if (new_stacksize)
		1960	{
1661	coro_stacksize = new_stacksize;	1961	cctx_stacksize = new_stacksize;
		1962	++cctx_gen;
		1963	}
		1964	OUTPUT:
		1965	RETVAL
		1966
		1967	int
		1968	cctx_max_idle (int max_idle = 0)
		1969	CODE:
		1970	RETVAL = cctx_max_idle;
		1971	if (max_idle > 1)
		1972	cctx_max_idle = max_idle;
1662	OUTPUT:	1973	OUTPUT:
1663	RETVAL	1974	RETVAL
1664		1975
1665	int	1976	int
1666	cctx_count ()	1977	cctx_count ()
…		…
1690	call (Coro::State coro, SV *coderef)	2001	call (Coro::State coro, SV *coderef)
1691	ALIAS:	2002	ALIAS:
1692	eval = 1	2003	eval = 1
1693	CODE:	2004	CODE:
1694	{	2005	{
1695	if (coro->mainstack)	2006	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1696	{	2007	{
1697	struct coro temp;	2008	struct coro temp;
1698		2009
1699	if (!(coro->flags & CF_RUNNING))	2010	if (!(coro->flags & CF_RUNNING))
1700	{	2011	{
		2012	PUTBACK;
1701	save_perl (aTHX_ &temp);	2013	save_perl (aTHX_ &temp);
1702	load_perl (aTHX_ coro);	2014	load_perl (aTHX_ coro);
1703	}	2015	}
1704		2016
1705	{	2017	{
1706	dSP;	2018	dSP;
1707	ENTER;	2019	ENTER;
1708	SAVETMPS;	2020	SAVETMPS;
		2021	PUTBACK;
		2022	PUSHSTACK;
1709	PUSHMARK (SP);	2023	PUSHMARK (SP);
1710	PUTBACK;
1711		2024
1712	if (ix)	2025	if (ix)
1713	eval_sv (coderef, 0);	2026	eval_sv (coderef, 0);
1714	else	2027	else
1715	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2028	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1716		2029
		2030	POPSTACK;
1717	SPAGAIN;	2031	SPAGAIN;
1718	FREETMPS;	2032	FREETMPS;
1719	LEAVE;	2033	LEAVE;
1720	PUTBACK;	2034	PUTBACK;
1721	}	2035	}
1722		2036
1723	if (!(coro->flags & CF_RUNNING))	2037	if (!(coro->flags & CF_RUNNING))
1724	{	2038	{
1725	save_perl (aTHX_ coro);	2039	save_perl (aTHX_ coro);
1726	load_perl (aTHX_ &temp);	2040	load_perl (aTHX_ &temp);
		2041	SPAGAIN;
1727	}	2042	}
1728	}	2043	}
1729	}	2044	}
1730		2045
1731	SV *	2046	SV *
…		…
1740	RETVAL = boolSV (coro->flags & ix);	2055	RETVAL = boolSV (coro->flags & ix);
1741	OUTPUT:	2056	OUTPUT:
1742	RETVAL	2057	RETVAL
1743		2058
1744	void	2059	void
		2060	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2061	PROTOTYPE: $;$
		2062	CODE:
		2063	SvREFCNT_dec (self->throw);
		2064	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2065
		2066	void
1745	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2067	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1746		2068
1747	SV *	2069	SV *
1748	has_stack (Coro::State coro)	2070	has_cctx (Coro::State coro)
1749	PROTOTYPE: $	2071	PROTOTYPE: $
1750	CODE:	2072	CODE:
1751	RETVAL = boolSV (!!coro->cctx);	2073	RETVAL = boolSV (!!coro->cctx);
1752	OUTPUT:	2074	OUTPUT:
1753	RETVAL	2075	RETVAL
…		…
1758	CODE:	2080	CODE:
1759	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2081	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1760	OUTPUT:	2082	OUTPUT:
1761	RETVAL	2083	RETVAL
1762		2084
1763	IV	2085	UV
1764	rss (Coro::State coro)	2086	rss (Coro::State coro)
1765	PROTOTYPE: $	2087	PROTOTYPE: $
1766	ALIAS:	2088	ALIAS:
1767	usecount = 1	2089	usecount = 1
1768	CODE:	2090	CODE:
…		…
1772	case 1: RETVAL = coro->usecount; break;	2094	case 1: RETVAL = coro->usecount; break;
1773	}	2095	}
1774	OUTPUT:	2096	OUTPUT:
1775	RETVAL	2097	RETVAL
1776		2098
		2099	void
		2100	force_cctx ()
		2101	CODE:
		2102	struct coro *coro = SvSTATE (coro_current);
		2103	coro->cctx->idle_sp = 0;
		2104
		2105	void
		2106	swap_defsv (Coro::State self)
		2107	PROTOTYPE: $
		2108	ALIAS:
		2109	swap_defav = 1
		2110	CODE:
		2111	if (!self->slot)
		2112	croak ("cannot swap state with coroutine that has no saved state");
		2113	else
		2114	{
		2115	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2116	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2117
		2118	SV *tmp = *src; *src = *dst; *dst = tmp;
		2119	}
1777		2120
1778	MODULE = Coro::State PACKAGE = Coro	2121	MODULE = Coro::State PACKAGE = Coro
1779		2122
1780	BOOT:	2123	BOOT:
1781	{	2124	{
1782	int i;	2125	int i;
1783		2126
1784	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1785	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1786	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2127	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2128	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2129	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1787		2130
1788	coro_current = coro_get_sv ("Coro::current", FALSE);	2131	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1789	SvREADONLY_on (coro_current);	2132	SvREADONLY_on (coro_current);
1790		2133
1791	coro_stash = gv_stashpv ("Coro", TRUE);	2134	coro_stash = gv_stashpv ("Coro", TRUE);
1792		2135
1793	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2136	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1821	void	2164	void
1822	_set_current (SV *current)	2165	_set_current (SV *current)
1823	PROTOTYPE: $	2166	PROTOTYPE: $
1824	CODE:	2167	CODE:
1825	SvREFCNT_dec (SvRV (coro_current));	2168	SvREFCNT_dec (SvRV (coro_current));
1826	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2169	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2170
		2171	void
		2172	_set_readyhook (SV *hook)
		2173	PROTOTYPE: $
		2174	CODE:
		2175	LOCK;
		2176	SvREFCNT_dec (coro_readyhook);
		2177	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2178	UNLOCK;
1827		2179
1828	int	2180	int
1829	prio (Coro::State coro, int newprio = 0)	2181	prio (Coro::State coro, int newprio = 0)
1830	ALIAS:	2182	ALIAS:
1831	nice = 1	2183	nice = 1
…		…
1861	CODE:	2213	CODE:
1862	RETVAL = coro_nready;	2214	RETVAL = coro_nready;
1863	OUTPUT:	2215	OUTPUT:
1864	RETVAL	2216	RETVAL
1865		2217
1866	void
1867	throw (Coro::State self, SV *throw = &PL_sv_undef)
1868	PROTOTYPE: $;$
1869	CODE:
1870	SvREFCNT_dec (self->throw);
1871	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1872
1873	# for async_pool speedup	2218	# for async_pool speedup
1874	void	2219	void
1875	_pool_1 (SV *cb)	2220	_pool_1 (SV *cb)
1876	CODE:	2221	CODE:
1877	{	2222	{
1878	struct coro *coro = SvSTATE (coro_current);	2223	struct coro *coro = SvSTATE (coro_current);
1879	HV *hv = (HV *)SvRV (coro_current);	2224	HV *hv = (HV *)SvRV (coro_current);
1880	AV *defav = GvAV (PL_defgv);	2225	AV *defav = GvAV (PL_defgv);
1881	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);	2226	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1882	AV *invoke_av;	2227	AV *invoke_av;
1883	int i, len;	2228	int i, len;
1884		2229
1885	if (!invoke)	2230	if (!invoke)
		2231	{
		2232	SV *old = PL_diehook;
		2233	PL_diehook = 0;
		2234	SvREFCNT_dec (old);
1886	croak ("\3async_pool terminate\2\n");	2235	croak ("\3async_pool terminate\2\n");
		2236	}
1887		2237
1888	SvREFCNT_dec (coro->saved_deffh);	2238	SvREFCNT_dec (coro->saved_deffh);
1889	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2239	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1890		2240
1891	hv_store (hv, "desc", sizeof ("desc") - 1,	2241	hv_store (hv, "desc", sizeof ("desc") - 1,
1892	newSVpvn (strpair ("[async_pool]")), 0);	2242	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1893		2243
1894	invoke_av = (AV *)SvRV (invoke);	2244	invoke_av = (AV *)SvRV (invoke);
1895	len = av_len (invoke_av);	2245	len = av_len (invoke_av);
1896		2246
1897	sv_setsv (cb, AvARRAY (invoke_av)[0]);	2247	sv_setsv (cb, AvARRAY (invoke_av)[0]);
1898		2248
1899	if (len > 0)	2249	if (len > 0)
1900	{	2250	{
1901	av_fill (defav, len - 1);	2251	av_fill (defav, len - 1);
1902	for (i = 0; i < len; ++i)	2252	for (i = 0; i < len; ++i)
1903	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2253	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1904	}	2254	}
1905		2255
1906	SvREFCNT_dec (invoke);	2256	SvREFCNT_dec (invoke);
1907	}	2257	}
1908		2258
…		…
1915	sv_setsv (cb, &PL_sv_undef);	2265	sv_setsv (cb, &PL_sv_undef);
1916		2266
1917	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2267	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1918	coro->saved_deffh = 0;	2268	coro->saved_deffh = 0;
1919		2269
1920	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2270	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1921	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2271	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2272	{
		2273	SV *old = PL_diehook;
		2274	PL_diehook = 0;
		2275	SvREFCNT_dec (old);
1922	croak ("\3async_pool terminate\2\n");	2276	croak ("\3async_pool terminate\2\n");
		2277	}
1923		2278
1924	av_clear (GvAV (PL_defgv));	2279	av_clear (GvAV (PL_defgv));
1925	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),	2280	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1926	newSVpvn (strpair ("[async_pool idle]")), 0);	2281	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1927		2282
1928	coro->prio = 0;	2283	coro->prio = 0;
1929		2284
1930	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2285	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1931	api_trace (coro_current, 0);	2286	api_trace (coro_current, 0);
1932		2287
1933	av_push (av_async_pool, newSVsv (coro_current));	2288	av_push (av_async_pool, newSVsv (coro_current));
1934	}	2289	}
1935		2290
		2291	#if 0
		2292
		2293	void
		2294	_generator_call (...)
		2295	PROTOTYPE: @
		2296	PPCODE:
		2297	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2298	xxxx
		2299	abort ();
		2300
		2301	SV *
		2302	gensub (SV *sub, ...)
		2303	PROTOTYPE: &;@
		2304	CODE:
		2305	{
		2306	struct coro *coro;
		2307	MAGIC *mg;
		2308	CV *xcv;
		2309	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2310	int i;
		2311
		2312	CvGV (ncv) = CvGV (cv);
		2313	CvFILE (ncv) = CvFILE (cv);
		2314
		2315	Newz (0, coro, 1, struct coro);
		2316	coro->args = newAV ();
		2317	coro->flags = CF_NEW;
		2318
		2319	av_extend (coro->args, items - 1);
		2320	for (i = 1; i < items; i++)
		2321	av_push (coro->args, newSVsv (ST (i)));
		2322
		2323	CvISXSUB_on (ncv);
		2324	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2325
		2326	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2327
		2328	CvXSUB (ncv) = CvXSUB (xcv);
		2329	CvANON_on (ncv);
		2330
		2331	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2332	RETVAL = newRV_noinc ((SV *)ncv);
		2333	}
		2334	OUTPUT:
		2335	RETVAL
		2336
		2337	#endif
		2338
1936		2339
1937	MODULE = Coro::State PACKAGE = Coro::AIO	2340	MODULE = Coro::State PACKAGE = Coro::AIO
1938		2341
1939	SV *	2342	void
1940	_get_state ()	2343	_get_state (SV *self)
1941	CODE:	2344	PPCODE:
1942	{	2345	{
1943	struct io_state *data;	2346	AV *defav = GvAV (PL_defgv);
1944		2347	AV *av = newAV ();
		2348	int i;
1945	RETVAL = newSV (sizeof (struct io_state));	2349	SV *data_sv = newSV (sizeof (struct io_state));
1946	data = (struct io_state *)SvPVX (RETVAL);	2350	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1947	SvCUR_set (RETVAL, sizeof (struct io_state));	2351	SvCUR_set (data_sv, sizeof (struct io_state));
1948	SvPOK_only (RETVAL);	2352	SvPOK_only (data_sv);
1949		2353
1950	data->errorno = errno;	2354	data->errorno = errno;
1951	data->laststype = PL_laststype;	2355	data->laststype = PL_laststype;
1952	data->laststatval = PL_laststatval;	2356	data->laststatval = PL_laststatval;
1953	data->statcache = PL_statcache;	2357	data->statcache = PL_statcache;
		2358
		2359	av_extend (av, AvFILLp (defav) + 1 + 1);
		2360
		2361	for (i = 0; i <= AvFILLp (defav); ++i)
		2362	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2363
		2364	av_push (av, data_sv);
		2365
		2366	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2367
		2368	api_ready (self);
1954	}	2369	}
1955	OUTPUT:
1956	RETVAL
1957		2370
1958	void	2371	void
1959	_set_state (char *data_)	2372	_set_state (SV *state)
1960	PROTOTYPE: $	2373	PROTOTYPE: $
1961	CODE:	2374	PPCODE:
1962	{	2375	{
1963	struct io_state *data = (void *)data_;	2376	AV *av = (AV *)SvRV (state);
		2377	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2378	int i;
1964		2379
1965	errno = data->errorno;	2380	errno = data->errorno;
1966	PL_laststype = data->laststype;	2381	PL_laststype = data->laststype;
1967	PL_laststatval = data->laststatval;	2382	PL_laststatval = data->laststatval;
1968	PL_statcache = data->statcache;	2383	PL_statcache = data->statcache;
1969	}
1970		2384
		2385	EXTEND (SP, AvFILLp (av));
		2386	for (i = 0; i < AvFILLp (av); ++i)
		2387	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2388	}
		2389
		2390
		2391	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2392
		2393	BOOT:
		2394	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2395
		2396	SV *
		2397	_schedule (...)
		2398	PROTOTYPE: @
		2399	CODE:
		2400	{
		2401	static int incede;
		2402
		2403	api_cede_notself ();
		2404
		2405	++incede;
		2406	while (coro_nready >= incede && api_cede ())
		2407	;
		2408
		2409	sv_setsv (sv_activity, &PL_sv_undef);
		2410	if (coro_nready >= incede)
		2411	{
		2412	PUSHMARK (SP);
		2413	PUTBACK;
		2414	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2415	SPAGAIN;
		2416	}
		2417
		2418	--incede;
		2419	}
		2420
		2421
		2422	MODULE = Coro::State PACKAGE = PerlIO::cede
		2423
		2424	BOOT:
		2425	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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