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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.210 by root, Wed Oct 10 03:24:40 2007 UTC vs.
Revision 1.259 by root, Mon Nov 10 00:02:29 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
14	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
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 */
		186	static volatile char next_has_throw; /* speedup flag for next->throw check */
153		187
154	static GV *irsgv; /* $/ */	188	static GV *irsgv; /* $/ */
155	static GV *stdoutgv; /* *STDOUT */	189	static GV *stdoutgv; /* *STDOUT */
156		190	static SV *rv_diehook;
		191	static SV *rv_warnhook;
157	static HV *hv_sig; /* %SIG */	192	static HV *hv_sig; /* %SIG */
158	static SV *sv_diehook;
159	static SV *sv_warnhook;
160		193
161	/* async_pool helper stuff */	194	/* async_pool helper stuff */
162	static SV *sv_pool_rss;	195	static SV *sv_pool_rss;
163	static SV *sv_pool_size;	196	static SV *sv_pool_size;
164	static AV *av_async_pool;	197	static AV *av_async_pool;
165		198
166	static struct coro_cctx *cctx_first[3]; /* index by GIMME_V type, void, scalar, array */	199	/* Coro::AnyEvent */
		200	static SV *sv_activity;
		201
		202	static struct coro_cctx *cctx_first;
167	static int cctx_count, cctx_idle[3];	203	static int cctx_count, cctx_idle;
168		204
169	enum {	205	enum {
170	CC_MAPPED = 0x01,	206	CC_MAPPED = 0x01,
171	CC_NOREUSE = 0x02, /* throw this away after tracing */	207	CC_NOREUSE = 0x02, /* throw this away after tracing */
172	CC_TRACE = 0x04,	208	CC_TRACE = 0x04,
…		…
187	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	223	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 */	224	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189	JMPENV *top_env;	225	JMPENV *top_env;
190	coro_context cctx;	226	coro_context cctx;
191		227
		228	U32 gen;
192	#if CORO_USE_VALGRIND	229	#if CORO_USE_VALGRIND
193	int valgrind_id;	230	int valgrind_id;
194	#endif	231	#endif
195	unsigned char flags;	232	unsigned char flags;
196	} coro_cctx;	233	} coro_cctx;
…		…
217		254
218	/* this is a structure representing a perl-level coroutine */	255	/* this is a structure representing a perl-level coroutine */
219	struct coro {	256	struct coro {
220	/* the c coroutine allocated to this perl coroutine, if any */	257	/* the c coroutine allocated to this perl coroutine, if any */
221	coro_cctx *cctx;	258	coro_cctx *cctx;
222	int gimme;
223		259
224	/* process data */	260	/* process data */
225	AV *mainstack;	261	AV *mainstack;
226	perl_slots *slot; /* basically the saved sp */	262	perl_slots *slot; /* basically the saved sp */
227		263
…		…
256	#define PRIO_IDLE -3	292	#define PRIO_IDLE -3
257	#define PRIO_MIN -4	293	#define PRIO_MIN -4
258		294
259	/* for Coro.pm */	295	/* for Coro.pm */
260	static SV *coro_current;	296	static SV *coro_current;
		297	static SV *coro_readyhook;
261	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	298	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
262	static int coro_nready;	299	static int coro_nready;
263	static struct coro *coro_first;	300	static struct coro *coro_first;
264		301
265	/** lowlevel stuff **********************************************************/	302	/** lowlevel stuff **********************************************************/
266		303
267	static SV *	304	static SV *
268	coro_get_sv (const char *name, int create)	305	coro_get_sv (pTHX_ const char *name, int create)
269	{	306	{
270	#if PERL_VERSION_ATLEAST (5,9,0)	307	#if PERL_VERSION_ATLEAST (5,10,0)
271	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	308	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
272	get_sv (name, create);	309	get_sv (name, create);
273	#endif	310	#endif
274	return get_sv (name, create);	311	return get_sv (name, create);
275	}	312	}
276		313
277	static AV *	314	static AV *
278	coro_get_av (const char *name, int create)	315	coro_get_av (pTHX_ const char *name, int create)
279	{	316	{
280	#if PERL_VERSION_ATLEAST (5,9,0)	317	#if PERL_VERSION_ATLEAST (5,10,0)
281	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	318	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
282	get_av (name, create);	319	get_av (name, create);
283	#endif	320	#endif
284	return get_av (name, create);	321	return get_av (name, create);
285	}	322	}
286		323
287	static HV *	324	static HV *
288	coro_get_hv (const char *name, int create)	325	coro_get_hv (pTHX_ const char *name, int create)
289	{	326	{
290	#if PERL_VERSION_ATLEAST (5,9,0)	327	#if PERL_VERSION_ATLEAST (5,10,0)
291	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	328	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
292	get_hv (name, create);	329	get_hv (name, create);
293	#endif	330	#endif
294	return get_hv (name, create);	331	return get_hv (name, create);
295	}	332	}
…		…
300	AV *padlist = CvPADLIST (cv);	337	AV *padlist = CvPADLIST (cv);
301	AV *newpadlist, *newpad;	338	AV *newpadlist, *newpad;
302		339
303	newpadlist = newAV ();	340	newpadlist = newAV ();
304	AvREAL_off (newpadlist);	341	AvREAL_off (newpadlist);
305	#if PERL_VERSION_ATLEAST (5,9,0)	342	#if PERL_VERSION_ATLEAST (5,10,0)
306	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	343	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
307	#else	344	#else
308	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	345	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
309	#endif	346	#endif
310	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	347	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
311	--AvFILLp (padlist);	348	--AvFILLp (padlist);
312		349
313	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	350	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
314	av_store (newpadlist, 1, (SV *)newpad);	351	av_store (newpadlist, 1, (SV *)newpad);
315		352
316	return newpadlist;	353	return newpadlist;
317	}	354	}
318		355
…		…
348		385
349	/* casting is fun. */	386	/* casting is fun. */
350	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	387	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
351	free_padlist (aTHX_ padlist);	388	free_padlist (aTHX_ padlist);
352		389
353	SvREFCNT_dec (av);	390	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
354		391
355	return 0;	392	return 0;
356	}	393	}
357		394
358	#define PERL_MAGIC_coro PERL_MAGIC_ext	395	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		396	#define CORO_MAGIC_type_state PERL_MAGIC_ext
359		397
360	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	398	static MGVTBL coro_cv_vtbl = {
		399	0, 0, 0, 0,
		400	coro_cv_free
		401	};
361		402
362	#define CORO_MAGIC(cv) \	403	#define CORO_MAGIC(sv, type) \
363	SvMAGIC (cv) \	404	SvMAGIC (sv) \
364	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	405	? SvMAGIC (sv)->mg_type == type \
365	? SvMAGIC (cv) \	406	? SvMAGIC (sv) \
366	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	407	: mg_find (sv, type) \
367	: 0	408	: 0
		409
		410	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		411	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
368		412
369	static struct coro *	413	static struct coro *
370	SvSTATE_ (pTHX_ SV *coro)	414	SvSTATE_ (pTHX_ SV *coro)
371	{	415	{
372	HV *stash;	416	HV *stash;
…		…
384	/* very slow, but rare, check */	428	/* very slow, but rare, check */
385	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	429	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
386	croak ("Coro::State object required");	430	croak ("Coro::State object required");
387	}	431	}
388		432
389	mg = CORO_MAGIC (coro);	433	mg = CORO_MAGIC_state (coro);
390	return (struct coro *)mg->mg_ptr;	434	return (struct coro *)mg->mg_ptr;
391	}	435	}
392		436
393	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	437	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
394		438
395	/* the next two functions merely cache the padlists */	439	/* the next two functions merely cache the padlists */
396	static void	440	static void
397	get_padlist (pTHX_ CV *cv)	441	get_padlist (pTHX_ CV *cv)
398	{	442	{
399	MAGIC *mg = CORO_MAGIC (cv);	443	MAGIC *mg = CORO_MAGIC_cv (cv);
400	AV *av;	444	AV *av;
401		445
402	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	446	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
403	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	447	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
404	else	448	else
405	{	449	{
406	#if CORO_PREFER_PERL_FUNCTIONS	450	#if CORO_PREFER_PERL_FUNCTIONS
407	/* this is probably cleaner, but also slower? */	451	/* this is probably cleaner? but also slower! */
		452	/* in practise, it seems to be less stable */
408	CV *cp = Perl_cv_clone (cv);	453	CV *cp = Perl_cv_clone (cv);
409	CvPADLIST (cv) = CvPADLIST (cp);	454	CvPADLIST (cv) = CvPADLIST (cp);
410	CvPADLIST (cp) = 0;	455	CvPADLIST (cp) = 0;
411	SvREFCNT_dec (cp);	456	SvREFCNT_dec (cp);
412	#else	457	#else
…		…
416	}	461	}
417		462
418	static void	463	static void
419	put_padlist (pTHX_ CV *cv)	464	put_padlist (pTHX_ CV *cv)
420	{	465	{
421	MAGIC *mg = CORO_MAGIC (cv);	466	MAGIC *mg = CORO_MAGIC_cv (cv);
422	AV *av;	467	AV *av;
423		468
424	if (expect_false (!mg))	469	if (expect_false (!mg))
425	{	470	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		471
432	av = (AV *)mg->mg_obj;	472	av = (AV *)mg->mg_obj;
433		473
434	if (expect_false (AvFILLp (av) >= AvMAX (av)))	474	if (expect_false (AvFILLp (av) >= AvMAX (av)))
435	av_extend (av, AvMAX (av) + 1);	475	av_extend (av, AvMAX (av) + 1);
…		…
453	GvSV (irsgv) = slot->irsgv;	493	GvSV (irsgv) = slot->irsgv;
454		494
455	#define VAR(name,type) PL_ ## name = slot->name;	495	#define VAR(name,type) PL_ ## name = slot->name;
456	# include "state.h"	496	# include "state.h"
457	#undef VAR	497	#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		498
462	{	499	{
463	dSP;	500	dSP;
464		501
465	CV *cv;	502	CV *cv;
…		…
504		541
505	if (expect_true (CvDEPTH (cv)))	542	if (expect_true (CvDEPTH (cv)))
506	{	543	{
507	EXTEND (SP, 3);	544	EXTEND (SP, 3);
508	PUSHs ((SV *)CvPADLIST (cv));	545	PUSHs ((SV *)CvPADLIST (cv));
509	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	546	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
510	PUSHs ((SV *)cv);	547	PUSHs ((SV *)cv);
511		548
512	CvDEPTH (cv) = 0;	549	CvDEPTH (cv) = 0;
513	get_padlist (aTHX_ cv);	550	get_padlist (aTHX_ cv);
514	}	551	}
…		…
594		631
595	New(54,PL_savestack,24,ANY);	632	New(54,PL_savestack,24,ANY);
596	PL_savestack_ix = 0;	633	PL_savestack_ix = 0;
597	PL_savestack_max = 24;	634	PL_savestack_max = 24;
598		635
599	#if !PERL_VERSION_ATLEAST (5,9,0)	636	#if !PERL_VERSION_ATLEAST (5,10,0)
600	New(54,PL_retstack,4,OP*);	637	New(54,PL_retstack,4,OP*);
601	PL_retstack_ix = 0;	638	PL_retstack_ix = 0;
602	PL_retstack_max = 4;	639	PL_retstack_max = 4;
603	#endif	640	#endif
604	}	641	}
…		…
606		643
607	/*	644	/*
608	* destroy the stacks, the callchain etc...	645	* destroy the stacks, the callchain etc...
609	*/	646	*/
610	static void	647	static void
611	coro_destroy_stacks (pTHX)	648	coro_destruct_stacks (pTHX)
612	{	649	{
613	while (PL_curstackinfo->si_next)	650	while (PL_curstackinfo->si_next)
614	PL_curstackinfo = PL_curstackinfo->si_next;	651	PL_curstackinfo = PL_curstackinfo->si_next;
615		652
616	while (PL_curstackinfo)	653	while (PL_curstackinfo)
…		…
627		664
628	Safefree (PL_tmps_stack);	665	Safefree (PL_tmps_stack);
629	Safefree (PL_markstack);	666	Safefree (PL_markstack);
630	Safefree (PL_scopestack);	667	Safefree (PL_scopestack);
631	Safefree (PL_savestack);	668	Safefree (PL_savestack);
632	#if !PERL_VERSION_ATLEAST (5,9,0)	669	#if !PERL_VERSION_ATLEAST (5,10,0)
633	Safefree (PL_retstack);	670	Safefree (PL_retstack);
634	#endif	671	#endif
635	}	672	}
636		673
637	static size_t	674	static size_t
…		…
653	#undef VAR	690	#undef VAR
654	}	691	}
655	else	692	else
656	slot = coro->slot;	693	slot = coro->slot;
657		694
		695	if (slot)
		696	{
658	rss += sizeof (slot->curstackinfo);	697	rss += sizeof (slot->curstackinfo);
659	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	698	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
660	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	699	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
661	rss += slot->tmps_max * sizeof (SV *);	700	rss += slot->tmps_max * sizeof (SV *);
662	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	701	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
663	rss += slot->scopestack_max * sizeof (I32);	702	rss += slot->scopestack_max * sizeof (I32);
664	rss += slot->savestack_max * sizeof (ANY);	703	rss += slot->savestack_max * sizeof (ANY);
665		704
666	#if !PERL_VERSION_ATLEAST (5,9,0)	705	#if !PERL_VERSION_ATLEAST (5,10,0)
667	rss += slot->retstack_max * sizeof (OP *);	706	rss += slot->retstack_max * sizeof (OP *);
668	#endif	707	#endif
		708	}
669	}	709	}
670		710
671	return rss;	711	return rss;
672	}	712	}
673		713
674	/** coroutine stack handling ************************************************/	714	/** coroutine stack handling ************************************************/
		715
		716	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		717	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		718	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		719
		720	/* apparently < 5.8.8 */
		721	#ifndef MgPV_nolen_const
		722	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		723	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		724	(const char*)(mg)->mg_ptr)
		725	#endif
		726
		727	/*
		728	* This overrides the default magic get method of %SIG elements.
		729	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		730	* and instead of tryign to save and restore the hash elements, we just provide
		731	* readback here.
		732	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		733	* not expecting this to actually change the hook. This is a potential problem
		734	* when a schedule happens then, but we ignore this.
		735	*/
		736	static int
		737	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		738	{
		739	const char *s = MgPV_nolen_const (mg);
		740
		741	if (*s == '_')
		742	{
		743	SV **svp = 0;
		744
		745	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		746	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		747
		748	if (svp)
		749	{
		750	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		751	return 0;
		752	}
		753	}
		754
		755	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		756	}
		757
		758	static int
		759	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		760	{
		761	const char *s = MgPV_nolen_const (mg);
		762
		763	if (*s == '_')
		764	{
		765	SV **svp = 0;
		766
		767	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		768	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		769
		770	if (svp)
		771	{
		772	SV *old = *svp;
		773	*svp = 0;
		774	SvREFCNT_dec (old);
		775	return 0;
		776	}
		777	}
		778
		779	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		780	}
		781
		782	static int
		783	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		784	{
		785	const char *s = MgPV_nolen_const (mg);
		786
		787	if (*s == '_')
		788	{
		789	SV **svp = 0;
		790
		791	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		792	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		793
		794	if (svp)
		795	{
		796	SV *old = *svp;
		797	*svp = newSVsv (sv);
		798	SvREFCNT_dec (old);
		799	return 0;
		800	}
		801	}
		802
		803	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		804	}
675		805
676	static void	806	static void
677	coro_setup (pTHX_ struct coro *coro)	807	coro_setup (pTHX_ struct coro *coro)
678	{	808	{
679	/*	809	/*
…		…
688	PL_curpm = 0;	818	PL_curpm = 0;
689	PL_curpad = 0;	819	PL_curpad = 0;
690	PL_localizing = 0;	820	PL_localizing = 0;
691	PL_dirty = 0;	821	PL_dirty = 0;
692	PL_restartop = 0;	822	PL_restartop = 0;
693	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);	823	#if PERL_VERSION_ATLEAST (5,10,0)
694	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);	824	PL_parser = 0;
		825	#endif
		826
		827	/* recreate the die/warn hooks */
		828	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		829	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
695		830
696	GvSV (PL_defgv) = newSV (0);	831	GvSV (PL_defgv) = newSV (0);
697	GvAV (PL_defgv) = coro->args; coro->args = 0;	832	GvAV (PL_defgv) = coro->args; coro->args = 0;
698	GvSV (PL_errgv) = newSV (0);	833	GvSV (PL_errgv) = newSV (0);
699	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	834	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
700	PL_rs = newSVsv (GvSV (irsgv));	835	PL_rs = newSVsv (GvSV (irsgv));
701	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	836	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
702		837
703	{	838	{
704	dSP;	839	dSP;
705	LOGOP myop;	840	LOGOP myop;
706		841
…		…
712	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	847	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
713	PUTBACK;	848	PUTBACK;
714	PL_op = (OP *)&myop;	849	PL_op = (OP *)&myop;
715	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	850	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
716	SPAGAIN;	851	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	}	852	}
732		853
733	/* this newly created coroutine might be run on an existing cctx which most	854	/* this newly created coroutine might be run on an existing cctx which most
734	* likely was suspended in set_stacklevel, called from entersub.	855	* likely was suspended in set_stacklevel, called from entersub.
735	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	856	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,
…		…
737	*/	858	*/
738	ENTER;	859	ENTER;
739	}	860	}
740		861
741	static void	862	static void
742	coro_destroy (pTHX_ struct coro *coro)	863	coro_destruct (pTHX_ struct coro *coro)
743	{	864	{
744	if (!IN_DESTRUCT)	865	if (!IN_DESTRUCT)
745	{	866	{
746	/* restore all saved variables and stuff */	867	/* restore all saved variables and stuff */
747	LEAVE_SCOPE (0);	868	LEAVE_SCOPE (0);
…		…
769	SvREFCNT_dec (PL_warnhook);	890	SvREFCNT_dec (PL_warnhook);
770		891
771	SvREFCNT_dec (coro->saved_deffh);	892	SvREFCNT_dec (coro->saved_deffh);
772	SvREFCNT_dec (coro->throw);	893	SvREFCNT_dec (coro->throw);
773		894
774	coro_destroy_stacks (aTHX);	895	coro_destruct_stacks (aTHX);
775	}	896	}
776		897
777	static void	898	static void
778	free_coro_mortal (pTHX)	899	free_coro_mortal (pTHX)
779	{	900	{
…		…
816	: cx->blk_gimme == G_SCALAR ? bot + 1	937	: cx->blk_gimme == G_SCALAR ? bot + 1
817	: bot;	938	: bot;
818		939
819	av_extend (av, top - bot);	940	av_extend (av, top - bot);
820	while (bot < top)	941	while (bot < top)
821	av_push (av, SvREFCNT_inc (*bot++));	942	av_push (av, SvREFCNT_inc_NN (*bot++));
822		943
823	PL_runops = RUNOPS_DEFAULT;	944	PL_runops = RUNOPS_DEFAULT;
824	ENTER;	945	ENTER;
825	SAVETMPS;	946	SAVETMPS;
826	EXTEND (SP, 3);	947	EXTEND (SP, 3);
827	PUSHMARK (SP);	948	PUSHMARK (SP);
828	PUSHs (&PL_sv_no);	949	PUSHs (&PL_sv_no);
829	PUSHs (fullname);	950	PUSHs (fullname);
830	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	951	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
831	PUTBACK;	952	PUTBACK;
832	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	953	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
833	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	954	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
834	SPAGAIN;	955	SPAGAIN;
835	FREETMPS;	956	FREETMPS;
836	LEAVE;	957	LEAVE;
837	PL_runops = runops_trace;	958	PL_runops = runops_trace;
…		…
864	SAVETMPS;	985	SAVETMPS;
865	EXTEND (SP, 3);	986	EXTEND (SP, 3);
866	PUSHMARK (SP);	987	PUSHMARK (SP);
867	PUSHs (&PL_sv_yes);	988	PUSHs (&PL_sv_yes);
868	PUSHs (fullname);	989	PUSHs (fullname);
869	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	990	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
870	PUTBACK;	991	PUTBACK;
871	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	992	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
872	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	993	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
873	SPAGAIN;	994	SPAGAIN;
874	FREETMPS;	995	FREETMPS;
875	LEAVE;	996	LEAVE;
876	PL_runops = runops_trace;	997	PL_runops = runops_trace;
…		…
890	PL_runops = RUNOPS_DEFAULT;	1011	PL_runops = RUNOPS_DEFAULT;
891	PUSHMARK (SP);	1012	PUSHMARK (SP);
892	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	1013	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
893	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	1014	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
894	PUTBACK;	1015	PUTBACK;
895	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);	1016	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
896	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1017	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
897	SPAGAIN;	1018	SPAGAIN;
898	FREETMPS;	1019	FREETMPS;
899	LEAVE;	1020	LEAVE;
900	PL_runops = runops_trace;	1021	PL_runops = runops_trace;
…		…
909	}	1030	}
910		1031
911	/* inject a fake call to Coro::State::_cctx_init into the execution */	1032	/* inject a fake call to Coro::State::_cctx_init into the execution */
912	/* _cctx_init should be careful, as it could be called at almost any time */	1033	/* _cctx_init should be careful, as it could be called at almost any time */
913	/* during execution of a perl program */	1034	/* during execution of a perl program */
		1035	/* also initialises PL_top_env */
914	static void NOINLINE	1036	static void NOINLINE
915	cctx_prepare (pTHX_ coro_cctx *cctx)	1037	cctx_prepare (pTHX_ coro_cctx *cctx)
916	{	1038	{
917	dSP;	1039	dSP;
918	LOGOP myop;	1040	LOGOP myop;
…		…
934	PL_op = (OP *)&myop;	1056	PL_op = (OP *)&myop;
935	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1057	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
936	SPAGAIN;	1058	SPAGAIN;
937	}	1059	}
938		1060
		1061	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
		1062	static void
		1063	transfer_tail (void)
		1064	{
		1065	UNLOCK;
		1066
		1067	if (expect_false (next_has_throw))
		1068	{
		1069	struct coro *coro = SvSTATE (coro_current);
		1070
		1071	if (coro->throw)
		1072	{
		1073	SV *exception = coro->throw;
		1074	coro->throw = 0;
		1075	sv_setsv (ERRSV, exception);
		1076	croak (0);
		1077	}
		1078	}
		1079	}
		1080
939	/*	1081	/*
940	* this is a _very_ stripped down perl interpreter ;)	1082	* this is a _very_ stripped down perl interpreter ;)
941	*/	1083	*/
942	static void	1084	static void
943	cctx_run (void *arg)	1085	cctx_run (void *arg)
944	{	1086	{
		1087	#ifdef USE_ITHREADS
		1088	# if CORO_PTHREAD
		1089	PERL_SET_CONTEXT (coro_thx);
		1090	# endif
		1091	#endif
		1092	{
945	dTHX;	1093	dTHX;
946		1094
947	/* cctx_run is the alternative tail of transfer(), so unlock here. */
948	UNLOCK;
949
950	/* we now skip the entersub that lead to transfer() */	1095	/* we now skip the entersub that lead to transfer () */
951	PL_op = PL_op->op_next;	1096	PL_op = PL_op->op_next;
952		1097
953	/* inject a fake subroutine call to cctx_init */	1098	/* inject a fake subroutine call to cctx_init */
954	cctx_prepare (aTHX_ (coro_cctx *)arg);	1099	cctx_prepare (aTHX_ (coro_cctx *)arg);
955		1100
		1101	/* cctx_run is the alternative tail of transfer () */
		1102	transfer_tail ();
		1103
956	/* somebody or something will hit me for both perl_run and PL_restartop */	1104	/* somebody or something will hit me for both perl_run and PL_restartop */
957	PL_restartop = PL_op;	1105	PL_restartop = PL_op;
958	perl_run (PL_curinterp);	1106	perl_run (PL_curinterp);
959		1107
960	/*	1108	/*
961	* If perl-run returns we assume exit() was being called or the coro	1109	* If perl-run returns we assume exit() was being called or the coro
962	* fell off the end, which seems to be the only valid (non-bug)	1110	* fell off the end, which seems to be the only valid (non-bug)
963	* reason for perl_run to return. We try to exit by jumping to the	1111	* reason for perl_run to return. We try to exit by jumping to the
964	* bootstrap-time "top" top_env, as we cannot restore the "main"	1112	* bootstrap-time "top" top_env, as we cannot restore the "main"
965	* coroutine as Coro has no such concept	1113	* coroutine as Coro has no such concept
966	*/	1114	*/
967	PL_top_env = main_top_env;	1115	PL_top_env = main_top_env;
968	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1116	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1117	}
969	}	1118	}
970		1119
971	static coro_cctx *	1120	static coro_cctx *
972	cctx_new ()	1121	cctx_new ()
973	{	1122	{
974	coro_cctx *cctx;	1123	coro_cctx *cctx;
		1124
		1125	++cctx_count;
		1126	New (0, cctx, 1, coro_cctx);
		1127
		1128	cctx->gen = cctx_gen;
		1129	cctx->flags = 0;
		1130	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel */
		1131
		1132	return cctx;
		1133	}
		1134
		1135	/* create a new cctx only suitable as source */
		1136	static coro_cctx *
		1137	cctx_new_empty ()
		1138	{
		1139	coro_cctx *cctx = cctx_new ();
		1140
		1141	cctx->sptr = 0;
		1142	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1143
		1144	return cctx;
		1145	}
		1146
		1147	/* create a new cctx suitable as destination/running a perl interpreter */
		1148	static coro_cctx *
		1149	cctx_new_run ()
		1150	{
		1151	coro_cctx *cctx = cctx_new ();
975	void *stack_start;	1152	void *stack_start;
976	size_t stack_size;	1153	size_t stack_size;
977		1154
978	++cctx_count;
979
980	Newz (0, cctx, 1, coro_cctx);
981
982	#if HAVE_MMAP	1155	#if HAVE_MMAP
983	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1156	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
984	/* mmap supposedly does allocate-on-write for us */	1157	/* mmap supposedly does allocate-on-write for us */
985	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1158	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
986		1159
987	if (cctx->sptr != (void *)-1)	1160	if (cctx->sptr != (void *)-1)
988	{	1161	{
…		…
994	cctx->flags |= CC_MAPPED;	1167	cctx->flags |= CC_MAPPED;
995	}	1168	}
996	else	1169	else
997	#endif	1170	#endif
998	{	1171	{
999	cctx->ssize = coro_stacksize * (long)sizeof (long);	1172	cctx->ssize = cctx_stacksize * (long)sizeof (long);
1000	New (0, cctx->sptr, coro_stacksize, long);	1173	New (0, cctx->sptr, cctx_stacksize, long);
1001		1174
1002	if (!cctx->sptr)	1175	if (!cctx->sptr)
1003	{	1176	{
1004	perror ("FATAL: unable to allocate stack for coroutine");	1177	perror ("FATAL: unable to allocate stack for coroutine");
1005	_exit (EXIT_FAILURE);	1178	_exit (EXIT_FAILURE);
…		…
1020	{	1193	{
1021	if (!cctx)	1194	if (!cctx)
1022	return;	1195	return;
1023		1196
1024	--cctx_count;	1197	--cctx_count;
		1198	coro_destroy (&cctx->cctx);
1025		1199
		1200	/* coro_transfer creates new, empty cctx's */
		1201	if (cctx->sptr)
		1202	{
1026	#if CORO_USE_VALGRIND	1203	#if CORO_USE_VALGRIND
1027	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1204	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1028	#endif	1205	#endif
1029		1206
1030	#if HAVE_MMAP	1207	#if HAVE_MMAP
1031	if (cctx->flags & CC_MAPPED)	1208	if (cctx->flags & CC_MAPPED)
1032	munmap (cctx->sptr, cctx->ssize);	1209	munmap (cctx->sptr, cctx->ssize);
1033	else	1210	else
1034	#endif	1211	#endif
1035	Safefree (cctx->sptr);	1212	Safefree (cctx->sptr);
		1213	}
1036		1214
1037	Safefree (cctx);	1215	Safefree (cctx);
1038	}	1216	}
1039		1217
1040	/* wether this cctx should be destructed */	1218	/* wether this cctx should be destructed */
1041	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1219	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1042		1220
1043	static coro_cctx *	1221	static coro_cctx *
1044	cctx_get (pTHX_ int gimme)	1222	cctx_get (pTHX)
1045	{	1223	{
1046	while (expect_true (cctx_first[gimme]))	1224	while (expect_true (cctx_first))
1047	{	1225	{
1048	coro_cctx *cctx = cctx_first[gimme];	1226	coro_cctx *cctx = cctx_first;
1049	cctx_first[gimme] = cctx->next;	1227	cctx_first = cctx->next;
1050	--cctx_idle[gimme];	1228	--cctx_idle;
1051		1229
1052	if (expect_true (!CCTX_EXPIRED (cctx)))	1230	if (expect_true (!CCTX_EXPIRED (cctx)))
1053	return cctx;	1231	return cctx;
1054		1232
1055	cctx_destroy (cctx);	1233	cctx_destroy (cctx);
1056	}	1234	}
1057		1235
1058	assert (!gimme);
1059	return cctx_new ();	1236	return cctx_new_run ();
1060	}	1237	}
1061		1238
1062	static void	1239	static void
1063	cctx_put (coro_cctx *cctx, int gimme)	1240	cctx_put (coro_cctx *cctx)
1064	{	1241	{
		1242	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1243
1065	/* free another cctx if overlimit */	1244	/* free another cctx if overlimit */
1066	if (expect_false (cctx_idle[gimme] >= MAX_IDLE_CCTX))	1245	if (expect_false (cctx_idle >= cctx_max_idle))
1067	{	1246	{
1068	coro_cctx *first = cctx_first[gimme];	1247	coro_cctx *first = cctx_first;
1069	cctx_first[gimme] = first->next;	1248	cctx_first = first->next;
1070	--cctx_idle[gimme];	1249	--cctx_idle;
1071		1250
1072	cctx_destroy (first);	1251	cctx_destroy (first);
1073	}	1252	}
1074		1253
1075	++cctx_idle[gimme];	1254	++cctx_idle;
1076	cctx->next = cctx_first[gimme];	1255	cctx->next = cctx_first;
1077	cctx_first[gimme] = cctx;	1256	cctx_first = cctx;
1078	}	1257	}
1079		1258
1080	/** coroutine switching *****************************************************/	1259	/** coroutine switching *****************************************************/
1081		1260
1082	static void	1261	static void
…		…
1091	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1270	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1092		1271
1093	if (expect_false (next->flags & CF_DESTROYED))	1272	if (expect_false (next->flags & CF_DESTROYED))
1094	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1273	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1095		1274
1096	if (
1097	#if PERL_VERSION_ATLEAST (5,9,0)	1275	#if !PERL_VERSION_ATLEAST (5,10,0)
1098	expect_false (PL_parser)
1099	#else
1100	expect_false (PL_lex_state != LEX_NOTPARSING)	1276	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1101	#endif
1102	)
1103	croak ("Coro::State::transfer called while parsing, but this is not supported");	1277	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1278	#endif
1104	}	1279	}
1105	}	1280	}
1106		1281
1107	/* always use the TRANSFER macro */	1282	/* always use the TRANSFER macro */
1108	static void NOINLINE	1283	static void NOINLINE
1109	transfer (pTHX_ struct coro *prev, struct coro *next)	1284	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1110	{	1285	{
1111	dSTACKLEVEL;	1286	dSTACKLEVEL;
1112		1287
1113	/* sometimes transfer is only called to set idle_sp */	1288	/* sometimes transfer is only called to set idle_sp */
1114	if (expect_false (!next))	1289	if (expect_false (!next))
…		…
1120	{	1295	{
1121	coro_cctx *prev__cctx;	1296	coro_cctx *prev__cctx;
1122		1297
1123	if (expect_false (prev->flags & CF_NEW))	1298	if (expect_false (prev->flags & CF_NEW))
1124	{	1299	{
1125	/* create a new empty context */	1300	/* create a new empty/source context */
1126	Newz (0, prev->cctx, 1, coro_cctx);	1301	prev->cctx = cctx_new_empty ();
1127	prev->flags &= ~CF_NEW;	1302	prev->flags &= ~CF_NEW;
1128	prev->flags |= CF_RUNNING;	1303	prev->flags |= CF_RUNNING;
1129	}	1304	}
1130		1305
1131	prev->flags &= ~CF_RUNNING;	1306	prev->flags &= ~CF_RUNNING;
1132	next->flags |= CF_RUNNING;	1307	next->flags |= CF_RUNNING;
1133		1308
1134	LOCK;	1309	LOCK;
		1310
		1311	/* first get rid of the old state */
		1312	save_perl (aTHX_ prev);
1135		1313
1136	if (expect_false (next->flags & CF_NEW))	1314	if (expect_false (next->flags & CF_NEW))
1137	{	1315	{
1138	/* need to start coroutine */	1316	/* need to start coroutine */
1139	next->flags &= ~CF_NEW;	1317	next->flags &= ~CF_NEW;
1140	/* first get rid of the old state */
1141	save_perl (aTHX_ prev);
1142	/* setup coroutine call */	1318	/* setup coroutine call */
1143	coro_setup (aTHX_ next);	1319	coro_setup (aTHX_ next);
1144	}	1320	}
1145	else	1321	else
1146	{
1147	/* coroutine already started */
1148	save_perl (aTHX_ prev);
1149	load_perl (aTHX_ next);	1322	load_perl (aTHX_ next);
1150	}
1151		1323
1152	prev__cctx = prev->cctx;	1324	prev__cctx = prev->cctx;
1153		1325
		1326	if (prev__cctx->idle_sp == STACKLEVEL) asm volatile("");//D
		1327
1154	/* possibly "free" the cctx */	1328	/* possibly "free" the cctx */
1155	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1329	if (expect_true (
		1330	prev__cctx->idle_sp == STACKLEVEL
		1331	&& !(prev__cctx->flags & CC_TRACE)
		1332	&& !force_cctx
		1333	))
1156	{	1334	{
1157	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1335	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1158	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1336	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1159		1337
1160	prev->cctx = 0;	1338	prev->cctx = 0;
1161		1339
1162	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1340	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1163	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1341	/* without this the next cctx_get might destroy the prev__cctx while still in use */
1164	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1342	if (expect_false (CCTX_EXPIRED (prev__cctx)))
1165	if (!next->cctx)	1343	if (!next->cctx)
1166	next->cctx = cctx_get (aTHX_ next->gimme);	1344	next->cctx = cctx_get (aTHX);
1167		1345
1168	cctx_put (prev__cctx, prev->gimme);	1346	cctx_put (prev__cctx);
1169	}	1347	}
1170		1348
1171	++next->usecount;	1349	++next->usecount;
1172		1350
1173	if (expect_true (!next->cctx))	1351	if (expect_true (!next->cctx))
1174	next->cctx = cctx_get (aTHX_ next->gimme);	1352	next->cctx = cctx_get (aTHX);
		1353
		1354	next_has_throw = !!next->throw;
1175		1355
1176	if (expect_false (prev__cctx != next->cctx))	1356	if (expect_false (prev__cctx != next->cctx))
1177	{	1357	{
1178	prev__cctx->top_env = PL_top_env;	1358	prev__cctx->top_env = PL_top_env;
1179	PL_top_env = next->cctx->top_env;	1359	PL_top_env = next->cctx->top_env;
…		…
1181	}	1361	}
1182		1362
1183	free_coro_mortal (aTHX);	1363	free_coro_mortal (aTHX);
1184	UNLOCK;	1364	UNLOCK;
1185		1365
1186	if (expect_false (prev->throw || next->throw))	1366	transfer_tail ();
1187	{
1188	struct coro *coro = SvSTATE (coro_current);
1189
1190	if (coro->throw)
1191	{
1192	SV *exception = coro->throw;
1193	coro->throw = 0;
1194	sv_setsv (ERRSV, exception);
1195	croak (0);
1196	}
1197	}
1198	}	1367	}
1199	}	1368	}
1200		1369
1201	struct transfer_args	1370	struct transfer_args
1202	{	1371	{
1203	struct coro *prev, *next;	1372	struct coro *prev, *next;
1204	};	1373	};
1205		1374
1206	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1375	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1207	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1376	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1208		1377
1209	/** high level stuff ********************************************************/	1378	/** high level stuff ********************************************************/
1210		1379
1211	static int	1380	static int
…		…
1235	croak ("FATAL: tried to destroy currently running coroutine");	1404	croak ("FATAL: tried to destroy currently running coroutine");
1236		1405
1237	save_perl (aTHX_ &temp);	1406	save_perl (aTHX_ &temp);
1238	load_perl (aTHX_ coro);	1407	load_perl (aTHX_ coro);
1239		1408
1240	coro_destroy (aTHX_ coro);	1409	coro_destruct (aTHX_ coro);
1241		1410
1242	load_perl (aTHX_ &temp);	1411	load_perl (aTHX_ &temp);
1243		1412
1244	coro->slot = 0;	1413	coro->slot = 0;
1245	}	1414	}
…		…
1305	{	1474	{
1306	dTHX;	1475	dTHX;
1307	struct transfer_args ta;	1476	struct transfer_args ta;
1308		1477
1309	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1478	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1310	TRANSFER (ta);	1479	TRANSFER (ta, 1);
1311	}	1480	}
1312		1481
1313	/** Coro ********************************************************************/	1482	/** Coro ********************************************************************/
1314		1483
1315	static void	1484	static void
…		…
1317	{	1486	{
1318	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1487	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1319	}	1488	}
1320		1489
1321	static SV *	1490	static SV *
1322	coro_deq (pTHX_ int min_prio)	1491	coro_deq (pTHX)
1323	{	1492	{
1324	int prio = PRIO_MAX - PRIO_MIN;	1493	int prio;
1325		1494
1326	min_prio -= PRIO_MIN;
1327	if (min_prio < 0)
1328	min_prio = 0;
1329
1330	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1495	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1331	if (AvFILLp (coro_ready [prio]) >= 0)	1496	if (AvFILLp (coro_ready [prio]) >= 0)
1332	return av_shift (coro_ready [prio]);	1497	return av_shift (coro_ready [prio]);
1333		1498
1334	return 0;	1499	return 0;
1335	}	1500	}
…		…
1337	static int	1502	static int
1338	api_ready (SV *coro_sv)	1503	api_ready (SV *coro_sv)
1339	{	1504	{
1340	dTHX;	1505	dTHX;
1341	struct coro *coro;	1506	struct coro *coro;
		1507	SV *sv_hook;
		1508	void (*xs_hook)(void);
1342		1509
1343	if (SvROK (coro_sv))	1510	if (SvROK (coro_sv))
1344	coro_sv = SvRV (coro_sv);	1511	coro_sv = SvRV (coro_sv);
1345		1512
1346	coro = SvSTATE (coro_sv);	1513	coro = SvSTATE (coro_sv);
…		…
1349	return 0;	1516	return 0;
1350		1517
1351	coro->flags |= CF_READY;	1518	coro->flags |= CF_READY;
1352		1519
1353	LOCK;	1520	LOCK;
		1521
		1522	sv_hook = coro_nready ? 0 : coro_readyhook;
		1523	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1524
1354	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1525	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1355	++coro_nready;	1526	++coro_nready;
		1527
1356	UNLOCK;	1528	UNLOCK;
		1529
		1530	if (sv_hook)
		1531	{
		1532	dSP;
		1533
		1534	ENTER;
		1535	SAVETMPS;
		1536
		1537	PUSHMARK (SP);
		1538	PUTBACK;
		1539	call_sv (sv_hook, G_DISCARD);
		1540	SPAGAIN;
		1541
		1542	FREETMPS;
		1543	LEAVE;
		1544	}
		1545
		1546	if (xs_hook)
		1547	xs_hook ();
1357		1548
1358	return 1;	1549	return 1;
1359	}	1550	}
1360		1551
1361	static int	1552	static int
…		…
1371	SV *prev_sv, *next_sv;	1562	SV *prev_sv, *next_sv;
1372		1563
1373	for (;;)	1564	for (;;)
1374	{	1565	{
1375	LOCK;	1566	LOCK;
1376	next_sv = coro_deq (aTHX_ PRIO_MIN);	1567	next_sv = coro_deq (aTHX);
1377		1568
1378	/* nothing to schedule: call the idle handler */	1569	/* nothing to schedule: call the idle handler */
1379	if (expect_false (!next_sv))	1570	if (expect_false (!next_sv))
1380	{	1571	{
1381	dSP;	1572	dSP;
…		…
1385	SAVETMPS;	1576	SAVETMPS;
1386		1577
1387	PUSHMARK (SP);	1578	PUSHMARK (SP);
1388	PUTBACK;	1579	PUTBACK;
1389	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1580	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1581	SPAGAIN;
1390		1582
1391	FREETMPS;	1583	FREETMPS;
1392	LEAVE;	1584	LEAVE;
1393	continue;	1585	continue;
1394	}	1586	}
…		…
1449	{	1641	{
1450	dTHX;	1642	dTHX;
1451	struct transfer_args ta;	1643	struct transfer_args ta;
1452		1644
1453	prepare_schedule (aTHX_ &ta);	1645	prepare_schedule (aTHX_ &ta);
1454	TRANSFER (ta);	1646	TRANSFER (ta, 1);
1455	}	1647	}
1456		1648
1457	static int	1649	static int
1458	api_cede (void)	1650	api_cede (void)
1459	{	1651	{
…		…
1462		1654
1463	prepare_cede (aTHX_ &ta);	1655	prepare_cede (aTHX_ &ta);
1464		1656
1465	if (expect_true (ta.prev != ta.next))	1657	if (expect_true (ta.prev != ta.next))
1466	{	1658	{
1467	TRANSFER (ta);	1659	TRANSFER (ta, 1);
1468	return 1;	1660	return 1;
1469	}	1661	}
1470	else	1662	else
1471	return 0;	1663	return 0;
1472	}	1664	}
…		…
1477	dTHX;	1669	dTHX;
1478	struct transfer_args ta;	1670	struct transfer_args ta;
1479		1671
1480	if (prepare_cede_notself (aTHX_ &ta))	1672	if (prepare_cede_notself (aTHX_ &ta))
1481	{	1673	{
1482	TRANSFER (ta);	1674	TRANSFER (ta, 1);
1483	return 1;	1675	return 1;
1484	}	1676	}
1485	else	1677	else
1486	return 0;	1678	return 0;
1487	}	1679	}
…		…
1493	struct coro *coro = SvSTATE (coro_sv);	1685	struct coro *coro = SvSTATE (coro_sv);
1494		1686
1495	if (flags & CC_TRACE)	1687	if (flags & CC_TRACE)
1496	{	1688	{
1497	if (!coro->cctx)	1689	if (!coro->cctx)
1498	coro->cctx = cctx_new ();	1690	coro->cctx = cctx_new_run ();
1499	else if (!(coro->cctx->flags & CC_TRACE))	1691	else if (!(coro->cctx->flags & CC_TRACE))
1500	croak ("cannot enable tracing on coroutine with custom stack");	1692	croak ("cannot enable tracing on coroutine with custom stack");
1501		1693
1502	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1694	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1503	}	1695	}
…		…
1510	else	1702	else
1511	coro->slot->runops = RUNOPS_DEFAULT;	1703	coro->slot->runops = RUNOPS_DEFAULT;
1512	}	1704	}
1513	}	1705	}
1514		1706
		1707	#if 0
		1708	static int
		1709	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1710	{
		1711	AV *padlist;
		1712	AV *av = (AV *)mg->mg_obj;
		1713
		1714	abort ();
		1715
		1716	return 0;
		1717	}
		1718
		1719	static MGVTBL coro_gensub_vtbl = {
		1720	0, 0, 0, 0,
		1721	coro_gensub_free
		1722	};
		1723	#endif
		1724
		1725	/*****************************************************************************/
		1726	/* PerlIO::cede */
		1727
		1728	typedef struct
		1729	{
		1730	PerlIOBuf base;
		1731	NV next, every;
		1732	} PerlIOCede;
		1733
		1734	static IV
		1735	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1736	{
		1737	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1738
		1739	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1740	self->next = nvtime () + self->every;
		1741
		1742	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1743	}
		1744
		1745	static SV *
		1746	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1747	{
		1748	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1749
		1750	return newSVnv (self->every);
		1751	}
		1752
		1753	static IV
		1754	PerlIOCede_flush (pTHX_ PerlIO *f)
		1755	{
		1756	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1757	double now = nvtime ();
		1758
		1759	if (now >= self->next)
		1760	{
		1761	api_cede ();
		1762	self->next = now + self->every;
		1763	}
		1764
		1765	return PerlIOBuf_flush (aTHX_ f);
		1766	}
		1767
		1768	static PerlIO_funcs PerlIO_cede =
		1769	{
		1770	sizeof(PerlIO_funcs),
		1771	"cede",
		1772	sizeof(PerlIOCede),
		1773	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1774	PerlIOCede_pushed,
		1775	PerlIOBuf_popped,
		1776	PerlIOBuf_open,
		1777	PerlIOBase_binmode,
		1778	PerlIOCede_getarg,
		1779	PerlIOBase_fileno,
		1780	PerlIOBuf_dup,
		1781	PerlIOBuf_read,
		1782	PerlIOBuf_unread,
		1783	PerlIOBuf_write,
		1784	PerlIOBuf_seek,
		1785	PerlIOBuf_tell,
		1786	PerlIOBuf_close,
		1787	PerlIOCede_flush,
		1788	PerlIOBuf_fill,
		1789	PerlIOBase_eof,
		1790	PerlIOBase_error,
		1791	PerlIOBase_clearerr,
		1792	PerlIOBase_setlinebuf,
		1793	PerlIOBuf_get_base,
		1794	PerlIOBuf_bufsiz,
		1795	PerlIOBuf_get_ptr,
		1796	PerlIOBuf_get_cnt,
		1797	PerlIOBuf_set_ptrcnt,
		1798	};
		1799
		1800
1515	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1801	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1516		1802
1517	PROTOTYPES: DISABLE	1803	PROTOTYPES: DISABLE
1518		1804
1519	BOOT:	1805	BOOT:
1520	{	1806	{
1521	#ifdef USE_ITHREADS	1807	#ifdef USE_ITHREADS
1522	MUTEX_INIT (&coro_mutex);	1808	MUTEX_INIT (&coro_lock);
		1809	# if CORO_PTHREAD
		1810	coro_thx = PERL_GET_CONTEXT;
		1811	# endif
1523	#endif	1812	#endif
1524	BOOT_PAGESIZE;	1813	BOOT_PAGESIZE;
1525		1814
1526	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1815	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1527	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1816	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1528		1817
		1818	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1819	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1820	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1821
1529	hv_sig = coro_get_hv ("SIG", TRUE);	1822	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1530	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1823	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1531	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);	1824	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1532
1533	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1534	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1535		1825
1536	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1826	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1537		1827
1538	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1828	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1539	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1829	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1544	main_top_env = PL_top_env;	1834	main_top_env = PL_top_env;
1545		1835
1546	while (main_top_env->je_prev)	1836	while (main_top_env->je_prev)
1547	main_top_env = main_top_env->je_prev;	1837	main_top_env = main_top_env->je_prev;
1548		1838
1549	coroapi.ver = CORO_API_VERSION;	1839	coroapi.ver = CORO_API_VERSION;
1550	coroapi.rev = CORO_API_REVISION;	1840	coroapi.rev = CORO_API_REVISION;
1551	coroapi.transfer = api_transfer;	1841	coroapi.transfer = api_transfer;
		1842
		1843	{
		1844	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1845
		1846	if (!svp) croak ("Time::HiRes is required");
		1847	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1848
		1849	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1850	}
1552		1851
1553	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1852	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1554	}	1853	}
1555		1854
1556	SV *	1855	SV *
1557	new (char *klass, ...)	1856	new (char *klass, ...)
1558	CODE:	1857	CODE:
1559	{	1858	{
1560	struct coro *coro;	1859	struct coro *coro;
		1860	MAGIC *mg;
1561	HV *hv;	1861	HV *hv;
1562	int i;	1862	int i;
1563		1863
1564	Newz (0, coro, 1, struct coro);	1864	Newz (0, coro, 1, struct coro);
1565	coro->args = newAV ();	1865	coro->args = newAV ();
…		…
1568	if (coro_first) coro_first->prev = coro;	1868	if (coro_first) coro_first->prev = coro;
1569	coro->next = coro_first;	1869	coro->next = coro_first;
1570	coro_first = coro;	1870	coro_first = coro;
1571		1871
1572	coro->hv = hv = newHV ();	1872	coro->hv = hv = newHV ();
1573	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1873	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1874	mg->mg_flags |= MGf_DUP;
1574	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1875	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1575		1876
1576	av_extend (coro->args, items - 1);	1877	av_extend (coro->args, items - 1);
1577	for (i = 1; i < items; i++)	1878	for (i = 1; i < items; i++)
1578	av_push (coro->args, newSVsv (ST (i)));	1879	av_push (coro->args, newSVsv (ST (i)));
…		…
1592	Coro::cede_notself = 4	1893	Coro::cede_notself = 4
1593	CODE:	1894	CODE:
1594	{	1895	{
1595	struct transfer_args ta;	1896	struct transfer_args ta;
1596		1897
		1898	PUTBACK;
1597	switch (ix)	1899	switch (ix)
1598	{	1900	{
1599	case 0:	1901	case 0:
1600	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1902	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1601	ta.next = 0;	1903	ta.next = 0;
1602	break;	1904	break;
1603		1905
1604	case 1:	1906	case 1:
1605	if (items != 2)	1907	if (items != 2)
1606	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1908	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1607		1909
1608	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1910	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1609	break;	1911	break;
1610		1912
1611	case 2:	1913	case 2:
…		…
1620	if (!prepare_cede_notself (aTHX_ &ta))	1922	if (!prepare_cede_notself (aTHX_ &ta))
1621	XSRETURN_EMPTY;	1923	XSRETURN_EMPTY;
1622		1924
1623	break;	1925	break;
1624	}	1926	}
		1927	SPAGAIN;
1625		1928
1626	BARRIER;	1929	BARRIER;
1627	PUTBACK;	1930	PUTBACK;
1628	TRANSFER (ta);	1931	TRANSFER (ta, 0);
1629	SPAGAIN; /* might be the sp of a different coroutine now */	1932	SPAGAIN; /* might be the sp of a different coroutine now */
1630	/* be extra careful not to ever do anything after TRANSFER */	1933	/* be extra careful not to ever do anything after TRANSFER */
1631	}	1934	}
1632		1935
1633	bool	1936	bool
…		…
1636	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1939	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1637	OUTPUT:	1940	OUTPUT:
1638	RETVAL	1941	RETVAL
1639		1942
1640	void	1943	void
1641	_exit (code)	1944	_exit (int code)
1642	int code
1643	PROTOTYPE: $	1945	PROTOTYPE: $
1644	CODE:	1946	CODE:
1645	_exit (code);	1947	_exit (code);
1646		1948
1647	int	1949	int
1648	cctx_stacksize (int new_stacksize = 0)	1950	cctx_stacksize (int new_stacksize = 0)
1649	CODE:	1951	CODE:
1650	RETVAL = coro_stacksize;	1952	RETVAL = cctx_stacksize;
1651	if (new_stacksize)	1953	if (new_stacksize)
		1954	{
1652	coro_stacksize = new_stacksize;	1955	cctx_stacksize = new_stacksize;
		1956	++cctx_gen;
		1957	}
		1958	OUTPUT:
		1959	RETVAL
		1960
		1961	int
		1962	cctx_max_idle (int max_idle = 0)
		1963	CODE:
		1964	RETVAL = cctx_max_idle;
		1965	if (max_idle > 1)
		1966	cctx_max_idle = max_idle;
1653	OUTPUT:	1967	OUTPUT:
1654	RETVAL	1968	RETVAL
1655		1969
1656	int	1970	int
1657	cctx_count ()	1971	cctx_count ()
…		…
1661	RETVAL	1975	RETVAL
1662		1976
1663	int	1977	int
1664	cctx_idle ()	1978	cctx_idle ()
1665	CODE:	1979	CODE:
1666	RETVAL = cctx_idle[0] + cctx_idle[1] + cctx_idle[2];	1980	RETVAL = cctx_idle;
1667	OUTPUT:	1981	OUTPUT:
1668	RETVAL	1982	RETVAL
1669		1983
1670	void	1984	void
1671	list ()	1985	list ()
…		…
1681	call (Coro::State coro, SV *coderef)	1995	call (Coro::State coro, SV *coderef)
1682	ALIAS:	1996	ALIAS:
1683	eval = 1	1997	eval = 1
1684	CODE:	1998	CODE:
1685	{	1999	{
1686	if (coro->mainstack)	2000	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1687	{	2001	{
1688	struct coro temp;	2002	struct coro temp;
1689		2003
1690	if (!(coro->flags & CF_RUNNING))	2004	if (!(coro->flags & CF_RUNNING))
1691	{	2005	{
		2006	PUTBACK;
1692	save_perl (aTHX_ &temp);	2007	save_perl (aTHX_ &temp);
1693	load_perl (aTHX_ coro);	2008	load_perl (aTHX_ coro);
1694	}	2009	}
1695		2010
1696	{	2011	{
…		…
1705	eval_sv (coderef, 0);	2020	eval_sv (coderef, 0);
1706	else	2021	else
1707	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2022	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1708		2023
1709	POPSTACK;	2024	POPSTACK;
		2025	SPAGAIN;
1710	FREETMPS;	2026	FREETMPS;
1711	LEAVE;	2027	LEAVE;
1712	PUTBACK;	2028	PUTBACK;
1713	}	2029	}
1714		2030
1715	if (!(coro->flags & CF_RUNNING))	2031	if (!(coro->flags & CF_RUNNING))
1716	{	2032	{
1717	save_perl (aTHX_ coro);	2033	save_perl (aTHX_ coro);
1718	load_perl (aTHX_ &temp);	2034	load_perl (aTHX_ &temp);
		2035	SPAGAIN;
1719	}	2036	}
1720	}	2037	}
1721	}	2038	}
1722		2039
1723	SV *	2040	SV *
…		…
1735		2052
1736	void	2053	void
1737	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2054	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1738		2055
1739	SV *	2056	SV *
1740	has_stack (Coro::State coro)	2057	has_cctx (Coro::State coro)
1741	PROTOTYPE: $	2058	PROTOTYPE: $
1742	CODE:	2059	CODE:
1743	RETVAL = boolSV (!!coro->cctx);	2060	RETVAL = boolSV (!!coro->cctx);
1744	OUTPUT:	2061	OUTPUT:
1745	RETVAL	2062	RETVAL
…		…
1750	CODE:	2067	CODE:
1751	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2068	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1752	OUTPUT:	2069	OUTPUT:
1753	RETVAL	2070	RETVAL
1754		2071
1755	IV	2072	UV
1756	rss (Coro::State coro)	2073	rss (Coro::State coro)
1757	PROTOTYPE: $	2074	PROTOTYPE: $
1758	ALIAS:	2075	ALIAS:
1759	usecount = 1	2076	usecount = 1
1760	CODE:	2077	CODE:
…		…
1764	case 1: RETVAL = coro->usecount; break;	2081	case 1: RETVAL = coro->usecount; break;
1765	}	2082	}
1766	OUTPUT:	2083	OUTPUT:
1767	RETVAL	2084	RETVAL
1768		2085
		2086	void
		2087	force_cctx ()
		2088	CODE:
		2089	struct coro *coro = SvSTATE (coro_current);
		2090	coro->cctx->idle_sp = 0;
		2091
		2092	void
		2093	swap_defsv (Coro::State self)
		2094	PROTOTYPE: $
		2095	ALIAS:
		2096	swap_defav = 1
		2097	CODE:
		2098	if (!self->slot)
		2099	croak ("cannot swap state with coroutine that has no saved state");
		2100	else
		2101	{
		2102	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2103	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2104
		2105	SV *tmp = *src; *src = *dst; *dst = tmp;
		2106	}
1769		2107
1770	MODULE = Coro::State PACKAGE = Coro	2108	MODULE = Coro::State PACKAGE = Coro
1771		2109
1772	BOOT:	2110	BOOT:
1773	{	2111	{
1774	int i;	2112	int i;
1775		2113
1776	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1777	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1778	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2114	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2115	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2116	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1779		2117
1780	coro_current = coro_get_sv ("Coro::current", FALSE);	2118	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1781	SvREADONLY_on (coro_current);	2119	SvREADONLY_on (coro_current);
1782		2120
1783	coro_stash = gv_stashpv ("Coro", TRUE);	2121	coro_stash = gv_stashpv ("Coro", TRUE);
1784		2122
1785	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2123	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1813	void	2151	void
1814	_set_current (SV *current)	2152	_set_current (SV *current)
1815	PROTOTYPE: $	2153	PROTOTYPE: $
1816	CODE:	2154	CODE:
1817	SvREFCNT_dec (SvRV (coro_current));	2155	SvREFCNT_dec (SvRV (coro_current));
1818	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2156	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2157
		2158	void
		2159	_set_readyhook (SV *hook)
		2160	PROTOTYPE: $
		2161	CODE:
		2162	LOCK;
		2163	SvREFCNT_dec (coro_readyhook);
		2164	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2165	UNLOCK;
1819		2166
1820	int	2167	int
1821	prio (Coro::State coro, int newprio = 0)	2168	prio (Coro::State coro, int newprio = 0)
1822	ALIAS:	2169	ALIAS:
1823	nice = 1	2170	nice = 1
…		…
1868	CODE:	2215	CODE:
1869	{	2216	{
1870	struct coro *coro = SvSTATE (coro_current);	2217	struct coro *coro = SvSTATE (coro_current);
1871	HV *hv = (HV *)SvRV (coro_current);	2218	HV *hv = (HV *)SvRV (coro_current);
1872	AV *defav = GvAV (PL_defgv);	2219	AV *defav = GvAV (PL_defgv);
1873	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);	2220	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1874	AV *invoke_av;	2221	AV *invoke_av;
1875	int i, len;	2222	int i, len;
1876		2223
1877	if (!invoke)	2224	if (!invoke)
		2225	{
		2226	SV *old = PL_diehook;
		2227	PL_diehook = 0;
		2228	SvREFCNT_dec (old);
1878	croak ("\3async_pool terminate\2\n");	2229	croak ("\3async_pool terminate\2\n");
		2230	}
1879		2231
1880	SvREFCNT_dec (coro->saved_deffh);	2232	SvREFCNT_dec (coro->saved_deffh);
1881	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2233	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1882		2234
1883	hv_store (hv, "desc", sizeof ("desc") - 1,	2235	hv_store (hv, "desc", sizeof ("desc") - 1,
1884	newSVpvn (strpair ("[async_pool]")), 0);	2236	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1885		2237
1886	invoke_av = (AV *)SvRV (invoke);	2238	invoke_av = (AV *)SvRV (invoke);
1887	len = av_len (invoke_av);	2239	len = av_len (invoke_av);
1888		2240
1889	sv_setsv (cb, AvARRAY (invoke_av)[0]);	2241	sv_setsv (cb, AvARRAY (invoke_av)[0]);
1890		2242
1891	if (len > 0)	2243	if (len > 0)
1892	{	2244	{
1893	av_fill (defav, len - 1);	2245	av_fill (defav, len - 1);
1894	for (i = 0; i < len; ++i)	2246	for (i = 0; i < len; ++i)
1895	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2247	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1896	}	2248	}
1897		2249
1898	SvREFCNT_dec (invoke);	2250	SvREFCNT_dec (invoke);
1899	}	2251	}
1900		2252
…		…
1907	sv_setsv (cb, &PL_sv_undef);	2259	sv_setsv (cb, &PL_sv_undef);
1908		2260
1909	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2261	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1910	coro->saved_deffh = 0;	2262	coro->saved_deffh = 0;
1911		2263
1912	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2264	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1913	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2265	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2266	{
		2267	SV *old = PL_diehook;
		2268	PL_diehook = 0;
		2269	SvREFCNT_dec (old);
1914	croak ("\3async_pool terminate\2\n");	2270	croak ("\3async_pool terminate\2\n");
		2271	}
1915		2272
1916	av_clear (GvAV (PL_defgv));	2273	av_clear (GvAV (PL_defgv));
1917	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),	2274	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1918	newSVpvn (strpair ("[async_pool idle]")), 0);	2275	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1919		2276
1920	coro->prio = 0;	2277	coro->prio = 0;
1921		2278
1922	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2279	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1923	api_trace (coro_current, 0);	2280	api_trace (coro_current, 0);
1924		2281
1925	av_push (av_async_pool, newSVsv (coro_current));	2282	av_push (av_async_pool, newSVsv (coro_current));
1926	}	2283	}
1927		2284
		2285	#if 0
		2286
		2287	void
		2288	_generator_call (...)
		2289	PROTOTYPE: @
		2290	PPCODE:
		2291	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2292	xxxx
		2293	abort ();
		2294
		2295	SV *
		2296	gensub (SV *sub, ...)
		2297	PROTOTYPE: &;@
		2298	CODE:
		2299	{
		2300	struct coro *coro;
		2301	MAGIC *mg;
		2302	CV *xcv;
		2303	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2304	int i;
		2305
		2306	CvGV (ncv) = CvGV (cv);
		2307	CvFILE (ncv) = CvFILE (cv);
		2308
		2309	Newz (0, coro, 1, struct coro);
		2310	coro->args = newAV ();
		2311	coro->flags = CF_NEW;
		2312
		2313	av_extend (coro->args, items - 1);
		2314	for (i = 1; i < items; i++)
		2315	av_push (coro->args, newSVsv (ST (i)));
		2316
		2317	CvISXSUB_on (ncv);
		2318	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2319
		2320	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2321
		2322	CvXSUB (ncv) = CvXSUB (xcv);
		2323	CvANON_on (ncv);
		2324
		2325	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2326	RETVAL = newRV_noinc ((SV *)ncv);
		2327	}
		2328	OUTPUT:
		2329	RETVAL
		2330
		2331	#endif
		2332
1928		2333
1929	MODULE = Coro::State PACKAGE = Coro::AIO	2334	MODULE = Coro::State PACKAGE = Coro::AIO
1930		2335
1931	SV *	2336	void
1932	_get_state ()	2337	_get_state (SV *self)
1933	CODE:	2338	PPCODE:
1934	{	2339	{
1935	struct io_state *data;	2340	AV *defav = GvAV (PL_defgv);
1936		2341	AV *av = newAV ();
		2342	int i;
1937	RETVAL = newSV (sizeof (struct io_state));	2343	SV *data_sv = newSV (sizeof (struct io_state));
1938	data = (struct io_state *)SvPVX (RETVAL);	2344	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1939	SvCUR_set (RETVAL, sizeof (struct io_state));	2345	SvCUR_set (data_sv, sizeof (struct io_state));
1940	SvPOK_only (RETVAL);	2346	SvPOK_only (data_sv);
1941		2347
1942	data->errorno = errno;	2348	data->errorno = errno;
1943	data->laststype = PL_laststype;	2349	data->laststype = PL_laststype;
1944	data->laststatval = PL_laststatval;	2350	data->laststatval = PL_laststatval;
1945	data->statcache = PL_statcache;	2351	data->statcache = PL_statcache;
		2352
		2353	av_extend (av, AvFILLp (defav) + 1 + 1);
		2354
		2355	for (i = 0; i <= AvFILLp (defav); ++i)
		2356	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2357
		2358	av_push (av, data_sv);
		2359
		2360	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2361
		2362	api_ready (self);
1946	}	2363	}
1947	OUTPUT:
1948	RETVAL
1949		2364
1950	void	2365	void
1951	_set_state (char *data_)	2366	_set_state (SV *state)
1952	PROTOTYPE: $	2367	PROTOTYPE: $
1953	CODE:	2368	PPCODE:
1954	{	2369	{
1955	struct io_state *data = (void *)data_;	2370	AV *av = (AV *)SvRV (state);
		2371	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2372	int i;
1956		2373
1957	errno = data->errorno;	2374	errno = data->errorno;
1958	PL_laststype = data->laststype;	2375	PL_laststype = data->laststype;
1959	PL_laststatval = data->laststatval;	2376	PL_laststatval = data->laststatval;
1960	PL_statcache = data->statcache;	2377	PL_statcache = data->statcache;
1961	}
1962		2378
		2379	EXTEND (SP, AvFILLp (av));
		2380	for (i = 0; i < AvFILLp (av); ++i)
		2381	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2382	}
		2383
		2384
		2385	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2386
		2387	BOOT:
		2388	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2389
		2390	SV *
		2391	_schedule (...)
		2392	PROTOTYPE: @
		2393	CODE:
		2394	{
		2395	static int incede;
		2396
		2397	api_cede_notself ();
		2398
		2399	++incede;
		2400	while (coro_nready >= incede && api_cede ())
		2401	;
		2402
		2403	sv_setsv (sv_activity, &PL_sv_undef);
		2404	if (coro_nready >= incede)
		2405	{
		2406	PUSHMARK (SP);
		2407	PUTBACK;
		2408	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2409	SPAGAIN;
		2410	}
		2411
		2412	--incede;
		2413	}
		2414
		2415
		2416	MODULE = Coro::State PACKAGE = PerlIO::cede
		2417
		2418	BOOT:
		2419	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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