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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.211 by root, Wed Oct 10 03:37:58 2007 UTC vs.
Revision 1.267 by root, Fri Nov 14 06:29:52 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
14	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
15	#include <inttypes.h> /* portable stdint.h */	23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
16		25
17	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
18	# include <unistd.h>	27	# include <unistd.h>
19	# include <sys/mman.h>	28	# include <sys/mman.h>
20	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
37	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
38	#endif	47	#endif
39		48
40	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
41	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
42	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
43	#else
44	# define REGISTER_STACK(cctx,start,end)
45	#endif	51	#endif
46		52
47	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
48	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
49		55
50	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
51	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
52	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
53	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
72	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
73	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
74	# endif	80	# endif
75	#endif	81	#endif
76		82
		83	/* 5.11 */
		84	#ifndef CxHASARGS
		85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		86	#endif
		87
		88	/* 5.10.0 */
		89	#ifndef SvREFCNT_inc_NN
		90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		91	#endif
		92
		93	/* 5.8.8 */
		94	#ifndef GV_NOTQUAL
		95	# define GV_NOTQUAL 0
		96	#endif
		97	#ifndef newSV
		98	# define newSV(l) NEWSV(0,l)
		99	#endif
		100
77	/* 5.8.7 */	101	/* 5.8.7 */
78	#ifndef SvRV_set	102	#ifndef SvRV_set
79	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
80	#endif
81
82	/* 5.8.8 */
83	#ifndef GV_NOTQUAL
84	# define GV_NOTQUAL 0
85	#endif
86	#ifndef newSV
87	# define newSV(l) NEWSV(0,l)
88	#endif	104	#endif
89		105
90	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	106	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
91	# undef CORO_STACKGUARD	107	# undef CORO_STACKGUARD
92	#endif	108	#endif
…		…
107		123
108	#define IN_DESTRUCT (PL_main_cv == Nullcv)	124	#define IN_DESTRUCT (PL_main_cv == Nullcv)
109		125
110	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
111	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
112	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
113	# define expect(expr,value) __builtin_expect ((expr),(value))	128	# define expect(expr,value) __builtin_expect ((expr),(value))
		129	# define INLINE static inline
114	#else	130	#else
115	# define attribute(x)	131	# define attribute(x)
116	# define BARRIER
117	# define expect(expr,value) (expr)	132	# define expect(expr,value) (expr)
		133	# define INLINE static
118	#endif	134	#endif
119		135
120	#define expect_false(expr) expect ((expr) != 0, 0)	136	#define expect_false(expr) expect ((expr) != 0, 0)
121	#define expect_true(expr) expect ((expr) != 0, 1)	137	#define expect_true(expr) expect ((expr) != 0, 1)
122		138
123	#define NOINLINE attribute ((noinline))	139	#define NOINLINE attribute ((noinline))
124		140
125	#include "CoroAPI.h"	141	#include "CoroAPI.h"
126		142
127	#ifdef USE_ITHREADS	143	#ifdef USE_ITHREADS
		144
128	static perl_mutex coro_mutex;	145	static perl_mutex coro_lock;
129	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	146	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
130	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	147	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		148	# if CORO_PTHREAD
		149	static void *coro_thx;
		150	# endif
		151
131	#else	152	#else
		153
132	# define LOCK (void)0	154	# define LOCK (void)0
133	# define UNLOCK (void)0	155	# define UNLOCK (void)0
134	#endif
135		156
136	#define strpair(const) const, sizeof (const) - 1	157	#endif
		158
		159	# undef LOCK
		160	# define LOCK (void)0
		161	# undef UNLOCK
		162	# define UNLOCK (void)0
137		163
138	/* helper storage struct for Coro::AIO */	164	/* helper storage struct for Coro::AIO */
139	struct io_state	165	struct io_state
140	{	166	{
		167	AV *res;
141	int errorno;	168	int errorno;
142	I32 laststype;	169	I32 laststype; /* U16 in 5.10.0 */
143	int laststatval;	170	int laststatval;
144	Stat_t statcache;	171	Stat_t statcache;
145	};	172	};
146		173
		174	static double (*nvtime)(); /* so why doesn't it take void? */
		175
		176	static U32 cctx_gen;
147	static size_t coro_stacksize = CORO_STACKSIZE;	177	static size_t cctx_stacksize = CORO_STACKSIZE;
148	static struct CoroAPI coroapi;	178	static struct CoroAPI coroapi;
149	static AV *main_mainstack; /* used to differentiate between $main and others */	179	static AV *main_mainstack; /* used to differentiate between $main and others */
150	static JMPENV *main_top_env;	180	static JMPENV *main_top_env;
151	static HV *coro_state_stash, *coro_stash;	181	static HV *coro_state_stash, *coro_stash;
152	static SV *coro_mortal; /* will be freed after next transfer */	182	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		183	static volatile struct coro *transfer_next;
		184
		185	struct transfer_args
		186	{
		187	struct coro *prev, *next;
		188	};
153		189
154	static GV *irsgv; /* $/ */	190	static GV *irsgv; /* $/ */
155	static GV *stdoutgv; /* *STDOUT */	191	static GV *stdoutgv; /* *STDOUT */
156		192	static SV *rv_diehook;
		193	static SV *rv_warnhook;
157	static HV *hv_sig; /* %SIG */	194	static HV *hv_sig; /* %SIG */
158	static SV *sv_diehook;
159	static SV *sv_warnhook;
160		195
161	/* async_pool helper stuff */	196	/* async_pool helper stuff */
162	static SV *sv_pool_rss;	197	static SV *sv_pool_rss;
163	static SV *sv_pool_size;	198	static SV *sv_pool_size;
164	static AV *av_async_pool;	199	static AV *av_async_pool;
		200
		201	/* Coro::AnyEvent */
		202	static SV *sv_activity;
165		203
166	static struct coro_cctx *cctx_first;	204	static struct coro_cctx *cctx_first;
167	static int cctx_count, cctx_idle;	205	static int cctx_count, cctx_idle;
168		206
169	enum {	207	enum {
…		…
187	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	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 */	226	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
189	JMPENV *top_env;	227	JMPENV *top_env;
190	coro_context cctx;	228	coro_context cctx;
191		229
		230	U32 gen;
192	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
193	int valgrind_id;	232	int valgrind_id;
194	#endif	233	#endif
195	unsigned char flags;	234	unsigned char flags;
196	} coro_cctx;	235	} coro_cctx;
…		…
255	#define PRIO_IDLE -3	294	#define PRIO_IDLE -3
256	#define PRIO_MIN -4	295	#define PRIO_MIN -4
257		296
258	/* for Coro.pm */	297	/* for Coro.pm */
259	static SV *coro_current;	298	static SV *coro_current;
		299	static SV *coro_readyhook;
260	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
261	static int coro_nready;	301	static int coro_nready;
262	static struct coro *coro_first;	302	static struct coro *coro_first;
263		303
264	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
265		305
266	static SV *	306	static SV *
267	coro_get_sv (const char *name, int create)	307	coro_get_sv (pTHX_ const char *name, int create)
268	{	308	{
269	#if PERL_VERSION_ATLEAST (5,9,0)	309	#if PERL_VERSION_ATLEAST (5,10,0)
270	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	310	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
271	get_sv (name, create);	311	get_sv (name, create);
272	#endif	312	#endif
273	return get_sv (name, create);	313	return get_sv (name, create);
274	}	314	}
275		315
276	static AV *	316	static AV *
277	coro_get_av (const char *name, int create)	317	coro_get_av (pTHX_ const char *name, int create)
278	{	318	{
279	#if PERL_VERSION_ATLEAST (5,9,0)	319	#if PERL_VERSION_ATLEAST (5,10,0)
280	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	320	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
281	get_av (name, create);	321	get_av (name, create);
282	#endif	322	#endif
283	return get_av (name, create);	323	return get_av (name, create);
284	}	324	}
285		325
286	static HV *	326	static HV *
287	coro_get_hv (const char *name, int create)	327	coro_get_hv (pTHX_ const char *name, int create)
288	{	328	{
289	#if PERL_VERSION_ATLEAST (5,9,0)	329	#if PERL_VERSION_ATLEAST (5,10,0)
290	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	330	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
291	get_hv (name, create);	331	get_hv (name, create);
292	#endif	332	#endif
293	return get_hv (name, create);	333	return get_hv (name, create);
294	}	334	}
…		…
299	AV *padlist = CvPADLIST (cv);	339	AV *padlist = CvPADLIST (cv);
300	AV *newpadlist, *newpad;	340	AV *newpadlist, *newpad;
301		341
302	newpadlist = newAV ();	342	newpadlist = newAV ();
303	AvREAL_off (newpadlist);	343	AvREAL_off (newpadlist);
304	#if PERL_VERSION_ATLEAST (5,9,0)	344	#if PERL_VERSION_ATLEAST (5,10,0)
305	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	345	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
306	#else	346	#else
307	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
308	#endif	348	#endif
309	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
310	--AvFILLp (padlist);	350	--AvFILLp (padlist);
311		351
312	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
313	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
314		354
315	return newpadlist;	355	return newpadlist;
316	}	356	}
317		357
…		…
347		387
348	/* casting is fun. */	388	/* casting is fun. */
349	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
350	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
351		391
352	SvREFCNT_dec (av);	392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
353		393
354	return 0;	394	return 0;
355	}	395	}
356		396
357	#define PERL_MAGIC_coro PERL_MAGIC_ext	397	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		398	#define CORO_MAGIC_type_state PERL_MAGIC_ext
358		399
359	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	400	static MGVTBL coro_cv_vtbl = {
		401	0, 0, 0, 0,
		402	coro_cv_free
		403	};
360		404
361	#define CORO_MAGIC(cv) \	405	#define CORO_MAGIC(sv, type) \
362	SvMAGIC (cv) \	406	SvMAGIC (sv) \
363	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	407	? SvMAGIC (sv)->mg_type == type \
364	? SvMAGIC (cv) \	408	? SvMAGIC (sv) \
365	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	409	: mg_find (sv, type) \
366	: 0	410	: 0
367		411
368	static struct coro *	412	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		413	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
		414
		415	INLINE struct coro *
369	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
370	{	417	{
371	HV *stash;	418	HV *stash;
372	MAGIC *mg;	419	MAGIC *mg;
373		420
…		…
383	/* very slow, but rare, check */	430	/* very slow, but rare, check */
384	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	431	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
385	croak ("Coro::State object required");	432	croak ("Coro::State object required");
386	}	433	}
387		434
388	mg = CORO_MAGIC (coro);	435	mg = CORO_MAGIC_state (coro);
389	return (struct coro *)mg->mg_ptr;	436	return (struct coro *)mg->mg_ptr;
390	}	437	}
391		438
392	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	439	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
393		440
394	/* the next two functions merely cache the padlists */	441	/* the next two functions merely cache the padlists */
395	static void	442	static void
396	get_padlist (pTHX_ CV *cv)	443	get_padlist (pTHX_ CV *cv)
397	{	444	{
398	MAGIC *mg = CORO_MAGIC (cv);	445	MAGIC *mg = CORO_MAGIC_cv (cv);
399	AV *av;	446	AV *av;
400		447
401	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
402	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
403	else	450	else
404	{	451	{
405	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
406	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
407	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
408	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
409	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
410	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
411	#else	459	#else
…		…
415	}	463	}
416		464
417	static void	465	static void
418	put_padlist (pTHX_ CV *cv)	466	put_padlist (pTHX_ CV *cv)
419	{	467	{
420	MAGIC *mg = CORO_MAGIC (cv);	468	MAGIC *mg = CORO_MAGIC_cv (cv);
421	AV *av;	469	AV *av;
422		470
423	if (expect_false (!mg))	471	if (expect_false (!mg))
424	{	472	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
425	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
426	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
427	mg->mg_virtual = &vtbl_coro;
428	mg->mg_obj = (SV *)newAV ();
429	}
430		473
431	av = (AV *)mg->mg_obj;	474	av = (AV *)mg->mg_obj;
432		475
433	if (expect_false (AvFILLp (av) >= AvMAX (av)))	476	if (expect_false (AvFILLp (av) >= AvMAX (av)))
434	av_extend (av, AvMAX (av) + 1);	477	av_extend (av, AvMAX (av) + 1);
…		…
452	GvSV (irsgv) = slot->irsgv;	495	GvSV (irsgv) = slot->irsgv;
453		496
454	#define VAR(name,type) PL_ ## name = slot->name;	497	#define VAR(name,type) PL_ ## name = slot->name;
455	# include "state.h"	498	# include "state.h"
456	#undef VAR	499	#undef VAR
457
458	/*hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);*/
459	/*hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);*/
460		500
461	{	501	{
462	dSP;	502	dSP;
463		503
464	CV *cv;	504	CV *cv;
…		…
503		543
504	if (expect_true (CvDEPTH (cv)))	544	if (expect_true (CvDEPTH (cv)))
505	{	545	{
506	EXTEND (SP, 3);	546	EXTEND (SP, 3);
507	PUSHs ((SV *)CvPADLIST (cv));	547	PUSHs ((SV *)CvPADLIST (cv));
508	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	548	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
509	PUSHs ((SV *)cv);	549	PUSHs ((SV *)cv);
510		550
511	CvDEPTH (cv) = 0;	551	CvDEPTH (cv) = 0;
512	get_padlist (aTHX_ cv);	552	get_padlist (aTHX_ cv);
513	}	553	}
…		…
593		633
594	New(54,PL_savestack,24,ANY);	634	New(54,PL_savestack,24,ANY);
595	PL_savestack_ix = 0;	635	PL_savestack_ix = 0;
596	PL_savestack_max = 24;	636	PL_savestack_max = 24;
597		637
598	#if !PERL_VERSION_ATLEAST (5,9,0)	638	#if !PERL_VERSION_ATLEAST (5,10,0)
599	New(54,PL_retstack,4,OP*);	639	New(54,PL_retstack,4,OP*);
600	PL_retstack_ix = 0;	640	PL_retstack_ix = 0;
601	PL_retstack_max = 4;	641	PL_retstack_max = 4;
602	#endif	642	#endif
603	}	643	}
…		…
605		645
606	/*	646	/*
607	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
608	*/	648	*/
609	static void	649	static void
610	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
611	{	651	{
612	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
613	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
614		654
615	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
626		666
627	Safefree (PL_tmps_stack);	667	Safefree (PL_tmps_stack);
628	Safefree (PL_markstack);	668	Safefree (PL_markstack);
629	Safefree (PL_scopestack);	669	Safefree (PL_scopestack);
630	Safefree (PL_savestack);	670	Safefree (PL_savestack);
631	#if !PERL_VERSION_ATLEAST (5,9,0)	671	#if !PERL_VERSION_ATLEAST (5,10,0)
632	Safefree (PL_retstack);	672	Safefree (PL_retstack);
633	#endif	673	#endif
634	}	674	}
635		675
636	static size_t	676	static size_t
…		…
652	#undef VAR	692	#undef VAR
653	}	693	}
654	else	694	else
655	slot = coro->slot;	695	slot = coro->slot;
656		696
		697	if (slot)
		698	{
657	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
658	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
659	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);	701	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
660	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
661	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
662	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
663	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
664		706
665	#if !PERL_VERSION_ATLEAST (5,9,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
666	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
667	#endif	709	#endif
		710	}
668	}	711	}
669		712
670	return rss;	713	return rss;
671	}	714	}
672		715
		716	/** set stacklevel support **************************************************/
		717
		718	/* we sometimes need to create the effect of pp_set_stacklevel calling us */
		719	#define SSL_HEAD (void)0
		720	/* we sometimes need to create the effect of leaving via pp_set_stacklevel */
		721	#define SSL_TAIL set_stacklevel_tail (aTHX)
		722
		723	INLINE void
		724	set_stacklevel_tail (pTHX)
		725	{
		726	dSP;
		727	SV **bot = SP;
		728
		729	int gimme = GIMME_V;
		730
		731	/* make sure we put something on the stack in scalar context */
		732	if (gimme == G_SCALAR)
		733	{
		734	if (sp == bot)
		735	XPUSHs (&PL_sv_undef);
		736
		737	SP = bot + 1;
		738	}
		739
		740	PUTBACK;
		741	}
		742
673	/** coroutine stack handling ************************************************/	743	/** coroutine stack handling ************************************************/
		744
		745	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		746	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		747	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		748
		749	/* apparently < 5.8.8 */
		750	#ifndef MgPV_nolen_const
		751	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		752	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		753	(const char*)(mg)->mg_ptr)
		754	#endif
		755
		756	/*
		757	* This overrides the default magic get method of %SIG elements.
		758	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		759	* and instead of tryign to save and restore the hash elements, we just provide
		760	* readback here.
		761	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		762	* not expecting this to actually change the hook. This is a potential problem
		763	* when a schedule happens then, but we ignore this.
		764	*/
		765	static int
		766	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		767	{
		768	const char *s = MgPV_nolen_const (mg);
		769
		770	if (*s == '_')
		771	{
		772	SV **svp = 0;
		773
		774	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		775	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		776
		777	if (svp)
		778	{
		779	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		780	return 0;
		781	}
		782	}
		783
		784	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		785	}
		786
		787	static int
		788	coro_sigelem_clr (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 = 0;
		803	SvREFCNT_dec (old);
		804	return 0;
		805	}
		806	}
		807
		808	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		809	}
		810
		811	static int
		812	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		813	{
		814	const char *s = MgPV_nolen_const (mg);
		815
		816	if (*s == '_')
		817	{
		818	SV **svp = 0;
		819
		820	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		821	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		822
		823	if (svp)
		824	{
		825	SV *old = *svp;
		826	*svp = newSVsv (sv);
		827	SvREFCNT_dec (old);
		828	return 0;
		829	}
		830	}
		831
		832	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		833	}
674		834
675	static void	835	static void
676	coro_setup (pTHX_ struct coro *coro)	836	coro_setup (pTHX_ struct coro *coro)
677	{	837	{
678	/*	838	/*
…		…
687	PL_curpm = 0;	847	PL_curpm = 0;
688	PL_curpad = 0;	848	PL_curpad = 0;
689	PL_localizing = 0;	849	PL_localizing = 0;
690	PL_dirty = 0;	850	PL_dirty = 0;
691	PL_restartop = 0;	851	PL_restartop = 0;
692	PL_diehook = 0; hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);	852	#if PERL_VERSION_ATLEAST (5,10,0)
693	PL_warnhook = 0; hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);	853	PL_parser = 0;
		854	#endif
		855
		856	/* recreate the die/warn hooks */
		857	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		858	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
694		859
695	GvSV (PL_defgv) = newSV (0);	860	GvSV (PL_defgv) = newSV (0);
696	GvAV (PL_defgv) = coro->args; coro->args = 0;	861	GvAV (PL_defgv) = coro->args; coro->args = 0;
697	GvSV (PL_errgv) = newSV (0);	862	GvSV (PL_errgv) = newSV (0);
698	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	863	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
699	PL_rs = newSVsv (GvSV (irsgv));	864	PL_rs = newSVsv (GvSV (irsgv));
700	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	865	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
701		866
702	{	867	{
703	dSP;	868	dSP;
704	LOGOP myop;	869	UNOP myop;
705		870
706	Zero (&myop, 1, LOGOP);	871	Zero (&myop, 1, UNOP);
707	myop.op_next = Nullop;	872	myop.op_next = Nullop;
708	myop.op_flags = OPf_WANT_VOID;	873	myop.op_flags = OPf_WANT_VOID;
709		874
710	PUSHMARK (SP);	875	PUSHMARK (SP);
711	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	876	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
714	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	879	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
715	SPAGAIN;	880	SPAGAIN;
716	}	881	}
717		882
718	/* this newly created coroutine might be run on an existing cctx which most	883	/* this newly created coroutine might be run on an existing cctx which most
719	* likely was suspended in set_stacklevel, called from entersub.	884	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
720	* set_stacklevl doesn't do anything on return, but entersub does LEAVE,	885	* so we have to emulate entering pp_set_stacklevel here.
721	* so we ENTER here for symmetry
722	*/	886	*/
723	ENTER;	887	SSL_HEAD;
724	}	888	}
725		889
726	static void	890	static void
727	coro_destroy (pTHX_ struct coro *coro)	891	coro_destruct (pTHX_ struct coro *coro)
728	{	892	{
729	if (!IN_DESTRUCT)	893	if (!IN_DESTRUCT)
730	{	894	{
731	/* restore all saved variables and stuff */	895	/* restore all saved variables and stuff */
732	LEAVE_SCOPE (0);	896	LEAVE_SCOPE (0);
…		…
754	SvREFCNT_dec (PL_warnhook);	918	SvREFCNT_dec (PL_warnhook);
755		919
756	SvREFCNT_dec (coro->saved_deffh);	920	SvREFCNT_dec (coro->saved_deffh);
757	SvREFCNT_dec (coro->throw);	921	SvREFCNT_dec (coro->throw);
758		922
759	coro_destroy_stacks (aTHX);	923	coro_destruct_stacks (aTHX);
760	}	924	}
761		925
762	static void	926	INLINE void
763	free_coro_mortal (pTHX)	927	free_coro_mortal (pTHX)
764	{	928	{
765	if (expect_true (coro_mortal))	929	if (expect_true (coro_mortal))
766	{	930	{
767	SvREFCNT_dec (coro_mortal);	931	SvREFCNT_dec (coro_mortal);
…		…
801	: cx->blk_gimme == G_SCALAR ? bot + 1	965	: cx->blk_gimme == G_SCALAR ? bot + 1
802	: bot;	966	: bot;
803		967
804	av_extend (av, top - bot);	968	av_extend (av, top - bot);
805	while (bot < top)	969	while (bot < top)
806	av_push (av, SvREFCNT_inc (*bot++));	970	av_push (av, SvREFCNT_inc_NN (*bot++));
807		971
808	PL_runops = RUNOPS_DEFAULT;	972	PL_runops = RUNOPS_DEFAULT;
809	ENTER;	973	ENTER;
810	SAVETMPS;	974	SAVETMPS;
811	EXTEND (SP, 3);	975	EXTEND (SP, 3);
812	PUSHMARK (SP);	976	PUSHMARK (SP);
813	PUSHs (&PL_sv_no);	977	PUSHs (&PL_sv_no);
814	PUSHs (fullname);	978	PUSHs (fullname);
815	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));	979	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
816	PUTBACK;	980	PUTBACK;
817	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	981	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
818	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	982	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
819	SPAGAIN;	983	SPAGAIN;
820	FREETMPS;	984	FREETMPS;
821	LEAVE;	985	LEAVE;
822	PL_runops = runops_trace;	986	PL_runops = runops_trace;
…		…
849	SAVETMPS;	1013	SAVETMPS;
850	EXTEND (SP, 3);	1014	EXTEND (SP, 3);
851	PUSHMARK (SP);	1015	PUSHMARK (SP);
852	PUSHs (&PL_sv_yes);	1016	PUSHs (&PL_sv_yes);
853	PUSHs (fullname);	1017	PUSHs (fullname);
854	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	1018	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
855	PUTBACK;	1019	PUTBACK;
856	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_sub_cb"), 0);	1020	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
857	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1021	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
858	SPAGAIN;	1022	SPAGAIN;
859	FREETMPS;	1023	FREETMPS;
860	LEAVE;	1024	LEAVE;
861	PL_runops = runops_trace;	1025	PL_runops = runops_trace;
…		…
875	PL_runops = RUNOPS_DEFAULT;	1039	PL_runops = RUNOPS_DEFAULT;
876	PUSHMARK (SP);	1040	PUSHMARK (SP);
877	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));	1041	PUSHs (sv_2mortal (newSVpv (OutCopFILE (oldcop), 0)));
878	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));	1042	PUSHs (sv_2mortal (newSViv (CopLINE (oldcop))));
879	PUTBACK;	1043	PUTBACK;
880	cb = hv_fetch ((HV *)SvRV (coro_current), strpair ("_trace_line_cb"), 0);	1044	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_line_cb", sizeof ("_trace_line_cb") - 1, 0);
881	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	1045	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
882	SPAGAIN;	1046	SPAGAIN;
883	FREETMPS;	1047	FREETMPS;
884	LEAVE;	1048	LEAVE;
885	PL_runops = runops_trace;	1049	PL_runops = runops_trace;
…		…
891		1055
892	TAINT_NOT;	1056	TAINT_NOT;
893	return 0;	1057	return 0;
894	}	1058	}
895		1059
		1060	static void
		1061	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1062	{
		1063	ta->prev = (struct coro *)cctx;
		1064	ta->next = 0;
		1065	}
		1066
896	/* inject a fake call to Coro::State::_cctx_init into the execution */	1067	/* inject a fake call to Coro::State::_cctx_init into the execution */
897	/* _cctx_init should be careful, as it could be called at almost any time */	1068	/* _cctx_init should be careful, as it could be called at almost any time */
898	/* during execution of a perl program */	1069	/* during execution of a perl program */
		1070	/* also initialises PL_top_env */
899	static void NOINLINE	1071	static void NOINLINE
900	cctx_prepare (pTHX_ coro_cctx *cctx)	1072	cctx_prepare (pTHX_ coro_cctx *cctx)
901	{	1073	{
902	dSP;	1074	dSP;
903	LOGOP myop;	1075	UNOP myop;
904		1076
905	PL_top_env = &PL_start_env;	1077	PL_top_env = &PL_start_env;
906		1078
907	if (cctx->flags & CC_TRACE)	1079	if (cctx->flags & CC_TRACE)
908	PL_runops = runops_trace;	1080	PL_runops = runops_trace;
909		1081
910	Zero (&myop, 1, LOGOP);	1082	Zero (&myop, 1, UNOP);
911	myop.op_next = PL_op;	1083	myop.op_next = PL_op;
912	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1084	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
913		1085
914	PUSHMARK (SP);	1086	PUSHMARK (SP);
915	EXTEND (SP, 2);	1087	EXTEND (SP, 2);
916	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1088	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
917	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1089	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
918	PUTBACK;	1090	PUTBACK;
919	PL_op = (OP *)&myop;	1091	PL_op = (OP *)&myop;
920	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1092	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
921	SPAGAIN;	1093	SPAGAIN;
922	}	1094	}
923		1095
		1096	/* the tail of transfer: execute stuff we can only do after a transfer */
		1097	INLINE void
		1098	transfer_tail (pTHX)
		1099	{
		1100	struct coro *next = (struct coro *)transfer_next;
		1101	assert (!(transfer_next = 0)); /* just used for the side effect when asserts are enabled */
		1102	assert (("FATAL: next coroutine was zero in transfer_tail (please report)", next));
		1103
		1104	free_coro_mortal (aTHX);
		1105	UNLOCK;
		1106
		1107	if (expect_false (next->throw))
		1108	{
		1109	SV *exception = sv_2mortal (next->throw);
		1110
		1111	next->throw = 0;
		1112	sv_setsv (ERRSV, exception);
		1113	croak (0);
		1114	}
		1115	}
		1116
924	/*	1117	/*
925	* this is a _very_ stripped down perl interpreter ;)	1118	* this is a _very_ stripped down perl interpreter ;)
926	*/	1119	*/
927	static void	1120	static void
928	cctx_run (void *arg)	1121	cctx_run (void *arg)
929	{	1122	{
		1123	#ifdef USE_ITHREADS
		1124	# if CORO_PTHREAD
		1125	PERL_SET_CONTEXT (coro_thx);
		1126	# endif
		1127	#endif
		1128	{
930	dTHX;	1129	dTHX;
931		1130
932	/* cctx_run is the alternative tail of transfer(), so unlock here. */	1131	/* we are the alternative tail to pp_set_stacklevel */
933	UNLOCK;	1132	/* so do the same things here */
		1133	SSL_TAIL;
934		1134
935	/* we now skip the entersub that lead to transfer() */	1135	/* we now skip the op that did lead to transfer() */
936	PL_op = PL_op->op_next;	1136	PL_op = PL_op->op_next;
937		1137
938	/* inject a fake subroutine call to cctx_init */	1138	/* inject a fake subroutine call to cctx_init */
939	cctx_prepare (aTHX_ (coro_cctx *)arg);	1139	cctx_prepare (aTHX_ (coro_cctx *)arg);
940		1140
		1141	/* cctx_run is the alternative tail of transfer() */
		1142	transfer_tail (aTHX);
		1143
941	/* somebody or something will hit me for both perl_run and PL_restartop */	1144	/* somebody or something will hit me for both perl_run and PL_restartop */
942	PL_restartop = PL_op;	1145	PL_restartop = PL_op;
943	perl_run (PL_curinterp);	1146	perl_run (PL_curinterp);
944		1147
945	/*	1148	/*
946	* If perl-run returns we assume exit() was being called or the coro	1149	* If perl-run returns we assume exit() was being called or the coro
947	* fell off the end, which seems to be the only valid (non-bug)	1150	* fell off the end, which seems to be the only valid (non-bug)
948	* reason for perl_run to return. We try to exit by jumping to the	1151	* reason for perl_run to return. We try to exit by jumping to the
949	* bootstrap-time "top" top_env, as we cannot restore the "main"	1152	* bootstrap-time "top" top_env, as we cannot restore the "main"
950	* coroutine as Coro has no such concept	1153	* coroutine as Coro has no such concept
951	*/	1154	*/
952	PL_top_env = main_top_env;	1155	PL_top_env = main_top_env;
953	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1156	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1157	}
954	}	1158	}
955		1159
956	static coro_cctx *	1160	static coro_cctx *
957	cctx_new ()	1161	cctx_new ()
958	{	1162	{
959	coro_cctx *cctx;	1163	coro_cctx *cctx;
		1164
		1165	++cctx_count;
		1166	New (0, cctx, 1, coro_cctx);
		1167
		1168	cctx->gen = cctx_gen;
		1169	cctx->flags = 0;
		1170	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1171
		1172	return cctx;
		1173	}
		1174
		1175	/* create a new cctx only suitable as source */
		1176	static coro_cctx *
		1177	cctx_new_empty ()
		1178	{
		1179	coro_cctx *cctx = cctx_new ();
		1180
		1181	cctx->sptr = 0;
		1182	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1183
		1184	return cctx;
		1185	}
		1186
		1187	/* create a new cctx suitable as destination/running a perl interpreter */
		1188	static coro_cctx *
		1189	cctx_new_run ()
		1190	{
		1191	coro_cctx *cctx = cctx_new ();
960	void *stack_start;	1192	void *stack_start;
961	size_t stack_size;	1193	size_t stack_size;
962		1194
963	++cctx_count;
964
965	Newz (0, cctx, 1, coro_cctx);
966
967	#if HAVE_MMAP	1195	#if HAVE_MMAP
968	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1196	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
969	/* mmap supposedly does allocate-on-write for us */	1197	/* mmap supposedly does allocate-on-write for us */
970	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1198	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
971		1199
972	if (cctx->sptr != (void *)-1)	1200	if (cctx->sptr != (void *)-1)
973	{	1201	{
974	# if CORO_STACKGUARD	1202	#if CORO_STACKGUARD
975	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1203	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
976	# endif	1204	#endif
977	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1205	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
978	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1206	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
979	cctx->flags |= CC_MAPPED;	1207	cctx->flags |= CC_MAPPED;
980	}	1208	}
981	else	1209	else
982	#endif	1210	#endif
983	{	1211	{
984	cctx->ssize = coro_stacksize * (long)sizeof (long);	1212	cctx->ssize = cctx_stacksize * (long)sizeof (long);
985	New (0, cctx->sptr, coro_stacksize, long);	1213	New (0, cctx->sptr, cctx_stacksize, long);
986		1214
987	if (!cctx->sptr)	1215	if (!cctx->sptr)
988	{	1216	{
989	perror ("FATAL: unable to allocate stack for coroutine");	1217	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
990	_exit (EXIT_FAILURE);	1218	_exit (EXIT_FAILURE);
991	}	1219	}
992		1220
993	stack_start = cctx->sptr;	1221	stack_start = cctx->sptr;
994	stack_size = cctx->ssize;	1222	stack_size = cctx->ssize;
995	}	1223	}
996		1224
997	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1225	#if CORO_USE_VALGRIND
		1226	cctx->valgrind_id = VALGRIND_STACK_REGISTER ((char *)stack_start, (char *)stack_start + stack_size);
		1227	#endif
		1228
998	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);	1229	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
999		1230
1000	return cctx;	1231	return cctx;
1001	}	1232	}
1002		1233
…		…
1005	{	1236	{
1006	if (!cctx)	1237	if (!cctx)
1007	return;	1238	return;
1008		1239
1009	--cctx_count;	1240	--cctx_count;
		1241	coro_destroy (&cctx->cctx);
1010		1242
		1243	/* coro_transfer creates new, empty cctx's */
		1244	if (cctx->sptr)
		1245	{
1011	#if CORO_USE_VALGRIND	1246	#if CORO_USE_VALGRIND
1012	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1247	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
1013	#endif	1248	#endif
1014		1249
1015	#if HAVE_MMAP	1250	#if HAVE_MMAP
1016	if (cctx->flags & CC_MAPPED)	1251	if (cctx->flags & CC_MAPPED)
1017	munmap (cctx->sptr, cctx->ssize);	1252	munmap (cctx->sptr, cctx->ssize);
1018	else	1253	else
1019	#endif	1254	#endif
1020	Safefree (cctx->sptr);	1255	Safefree (cctx->sptr);
		1256	}
1021		1257
1022	Safefree (cctx);	1258	Safefree (cctx);
1023	}	1259	}
1024		1260
1025	/* wether this cctx should be destructed */	1261	/* wether this cctx should be destructed */
1026	#define CCTX_EXPIRED(cctx) ((cctx)->ssize < coro_stacksize || ((cctx)->flags & CC_NOREUSE))	1262	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
1027		1263
1028	static coro_cctx *	1264	static coro_cctx *
1029	cctx_get (pTHX)	1265	cctx_get (pTHX)
1030	{	1266	{
1031	while (expect_true (cctx_first))	1267	while (expect_true (cctx_first))
…		…
1038	return cctx;	1274	return cctx;
1039		1275
1040	cctx_destroy (cctx);	1276	cctx_destroy (cctx);
1041	}	1277	}
1042		1278
1043	return cctx_new ();	1279	return cctx_new_run ();
1044	}	1280	}
1045		1281
1046	static void	1282	static void
1047	cctx_put (coro_cctx *cctx)	1283	cctx_put (coro_cctx *cctx)
1048	{	1284	{
		1285	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1286
1049	/* free another cctx if overlimit */	1287	/* free another cctx if overlimit */
1050	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1288	if (expect_false (cctx_idle >= cctx_max_idle))
1051	{	1289	{
1052	coro_cctx *first = cctx_first;	1290	coro_cctx *first = cctx_first;
1053	cctx_first = first->next;	1291	cctx_first = first->next;
1054	--cctx_idle;	1292	--cctx_idle;
1055		1293
…		…
1075	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1313	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
1076		1314
1077	if (expect_false (next->flags & CF_DESTROYED))	1315	if (expect_false (next->flags & CF_DESTROYED))
1078	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1316	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
1079		1317
1080	if (
1081	#if PERL_VERSION_ATLEAST (5,9,0)	1318	#if !PERL_VERSION_ATLEAST (5,10,0)
1082	expect_false (PL_parser)
1083	#else
1084	expect_false (PL_lex_state != LEX_NOTPARSING)	1319	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1085	#endif
1086	)
1087	croak ("Coro::State::transfer called while parsing, but this is not supported");	1320	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1321	#endif
1088	}	1322	}
1089	}	1323	}
1090		1324
1091	/* always use the TRANSFER macro */	1325	/* always use the TRANSFER macro */
1092	static void NOINLINE	1326	static void NOINLINE
1093	transfer (pTHX_ struct coro *prev, struct coro *next)	1327	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1094	{	1328	{
1095	dSTACKLEVEL;	1329	dSTACKLEVEL;
1096		1330
1097	/* sometimes transfer is only called to set idle_sp */	1331	/* sometimes transfer is only called to set idle_sp */
1098	if (expect_false (!next))	1332	if (expect_false (!next))
…		…
1104	{	1338	{
1105	coro_cctx *prev__cctx;	1339	coro_cctx *prev__cctx;
1106		1340
1107	if (expect_false (prev->flags & CF_NEW))	1341	if (expect_false (prev->flags & CF_NEW))
1108	{	1342	{
1109	/* create a new empty context */	1343	/* create a new empty/source context */
1110	Newz (0, prev->cctx, 1, coro_cctx);	1344	prev->cctx = cctx_new_empty ();
1111	prev->flags &= ~CF_NEW;	1345	prev->flags &= ~CF_NEW;
1112	prev->flags |= CF_RUNNING;	1346	prev->flags |= CF_RUNNING;
1113	}	1347	}
1114		1348
1115	prev->flags &= ~CF_RUNNING;	1349	prev->flags &= ~CF_RUNNING;
1116	next->flags |= CF_RUNNING;	1350	next->flags |= CF_RUNNING;
1117		1351
1118	LOCK;	1352	LOCK;
		1353
		1354	/* first get rid of the old state */
		1355	save_perl (aTHX_ prev);
1119		1356
1120	if (expect_false (next->flags & CF_NEW))	1357	if (expect_false (next->flags & CF_NEW))
1121	{	1358	{
1122	/* need to start coroutine */	1359	/* need to start coroutine */
1123	next->flags &= ~CF_NEW;	1360	next->flags &= ~CF_NEW;
1124	/* first get rid of the old state */
1125	save_perl (aTHX_ prev);
1126	/* setup coroutine call */	1361	/* setup coroutine call */
1127	coro_setup (aTHX_ next);	1362	coro_setup (aTHX_ next);
1128	}	1363	}
1129	else	1364	else
1130	{
1131	/* coroutine already started */
1132	save_perl (aTHX_ prev);
1133	load_perl (aTHX_ next);	1365	load_perl (aTHX_ next);
1134	}
1135		1366
1136	prev__cctx = prev->cctx;	1367	prev__cctx = prev->cctx;
1137		1368
1138	/* possibly "free" the cctx */	1369	/* possibly untie and reuse the cctx */
1139	if (expect_true (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE)))	1370	if (expect_true (
		1371	prev__cctx->idle_sp == STACKLEVEL
		1372	&& !(prev__cctx->flags & CC_TRACE)
		1373	&& !force_cctx
		1374	))
1140	{	1375	{
1141	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1376	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1142	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1377	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));
1143		1378
1144	prev->cctx = 0;	1379	prev->cctx = 0;
1145		1380
1146	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1381	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
1147	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1382	/* without this the next cctx_get might destroy the prev__cctx while still in use */
…		…
1154		1389
1155	++next->usecount;	1390	++next->usecount;
1156		1391
1157	if (expect_true (!next->cctx))	1392	if (expect_true (!next->cctx))
1158	next->cctx = cctx_get (aTHX);	1393	next->cctx = cctx_get (aTHX);
		1394
		1395	assert (("FATAL: transfer_next already nonzero in Coro (please report)", !transfer_next));
		1396	transfer_next = next;
1159		1397
1160	if (expect_false (prev__cctx != next->cctx))	1398	if (expect_false (prev__cctx != next->cctx))
1161	{	1399	{
1162	prev__cctx->top_env = PL_top_env;	1400	prev__cctx->top_env = PL_top_env;
1163	PL_top_env = next->cctx->top_env;	1401	PL_top_env = next->cctx->top_env;
1164	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1402	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1165	}	1403	}
1166		1404
1167	free_coro_mortal (aTHX);	1405	transfer_tail (aTHX);
1168	UNLOCK;
1169
1170	if (expect_false (prev->throw || next->throw))
1171	{
1172	struct coro *coro = SvSTATE (coro_current);
1173
1174	if (coro->throw)
1175	{
1176	SV *exception = coro->throw;
1177	coro->throw = 0;
1178	sv_setsv (ERRSV, exception);
1179	croak (0);
1180	}
1181	}
1182	}	1406	}
1183	}	1407	}
1184		1408
1185	struct transfer_args
1186	{
1187	struct coro *prev, *next;
1188	};
1189
1190	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1409	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1191	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1410	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1192		1411
1193	/** high level stuff ********************************************************/	1412	/** high level stuff ********************************************************/
1194		1413
1195	static int	1414	static int
…		…
1219	croak ("FATAL: tried to destroy currently running coroutine");	1438	croak ("FATAL: tried to destroy currently running coroutine");
1220		1439
1221	save_perl (aTHX_ &temp);	1440	save_perl (aTHX_ &temp);
1222	load_perl (aTHX_ coro);	1441	load_perl (aTHX_ coro);
1223		1442
1224	coro_destroy (aTHX_ coro);	1443	coro_destruct (aTHX_ coro);
1225		1444
1226	load_perl (aTHX_ &temp);	1445	load_perl (aTHX_ &temp);
1227		1446
1228	coro->slot = 0;	1447	coro->slot = 0;
1229	}	1448	}
…		…
1289	{	1508	{
1290	dTHX;	1509	dTHX;
1291	struct transfer_args ta;	1510	struct transfer_args ta;
1292		1511
1293	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1512	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1294	TRANSFER (ta);	1513	TRANSFER (ta, 1);
1295	}	1514	}
1296		1515
1297	/** Coro ********************************************************************/	1516	/** Coro ********************************************************************/
1298		1517
1299	static void	1518	static void
…		…
1301	{	1520	{
1302	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1521	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1303	}	1522	}
1304		1523
1305	static SV *	1524	static SV *
1306	coro_deq (pTHX_ int min_prio)	1525	coro_deq (pTHX)
1307	{	1526	{
1308	int prio = PRIO_MAX - PRIO_MIN;	1527	int prio;
1309		1528
1310	min_prio -= PRIO_MIN;
1311	if (min_prio < 0)
1312	min_prio = 0;
1313
1314	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1529	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1315	if (AvFILLp (coro_ready [prio]) >= 0)	1530	if (AvFILLp (coro_ready [prio]) >= 0)
1316	return av_shift (coro_ready [prio]);	1531	return av_shift (coro_ready [prio]);
1317		1532
1318	return 0;	1533	return 0;
1319	}	1534	}
…		…
1321	static int	1536	static int
1322	api_ready (SV *coro_sv)	1537	api_ready (SV *coro_sv)
1323	{	1538	{
1324	dTHX;	1539	dTHX;
1325	struct coro *coro;	1540	struct coro *coro;
		1541	SV *sv_hook;
		1542	void (*xs_hook)(void);
1326		1543
1327	if (SvROK (coro_sv))	1544	if (SvROK (coro_sv))
1328	coro_sv = SvRV (coro_sv);	1545	coro_sv = SvRV (coro_sv);
1329		1546
1330	coro = SvSTATE (coro_sv);	1547	coro = SvSTATE (coro_sv);
…		…
1333	return 0;	1550	return 0;
1334		1551
1335	coro->flags |= CF_READY;	1552	coro->flags |= CF_READY;
1336		1553
1337	LOCK;	1554	LOCK;
		1555
		1556	sv_hook = coro_nready ? 0 : coro_readyhook;
		1557	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1558
1338	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1559	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1339	++coro_nready;	1560	++coro_nready;
		1561
1340	UNLOCK;	1562	UNLOCK;
		1563
		1564	if (sv_hook)
		1565	{
		1566	dSP;
		1567
		1568	ENTER;
		1569	SAVETMPS;
		1570
		1571	PUSHMARK (SP);
		1572	PUTBACK;
		1573	call_sv (sv_hook, G_DISCARD);
		1574	SPAGAIN;
		1575
		1576	FREETMPS;
		1577	LEAVE;
		1578	}
		1579
		1580	if (xs_hook)
		1581	xs_hook ();
1341		1582
1342	return 1;	1583	return 1;
1343	}	1584	}
1344		1585
1345	static int	1586	static int
1346	api_is_ready (SV *coro_sv)	1587	api_is_ready (SV *coro_sv)
1347	{	1588	{
1348	dTHX;	1589	dTHX;
		1590
1349	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1591	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1350	}	1592	}
1351		1593
1352	static void	1594	INLINE void
1353	prepare_schedule (pTHX_ struct transfer_args *ta)	1595	prepare_schedule (pTHX_ struct transfer_args *ta)
1354	{	1596	{
1355	SV *prev_sv, *next_sv;	1597	SV *prev_sv, *next_sv;
1356		1598
1357	for (;;)	1599	for (;;)
1358	{	1600	{
1359	LOCK;	1601	LOCK;
1360	next_sv = coro_deq (aTHX_ PRIO_MIN);	1602	next_sv = coro_deq (aTHX);
1361		1603
1362	/* nothing to schedule: call the idle handler */	1604	/* nothing to schedule: call the idle handler */
1363	if (expect_false (!next_sv))	1605	if (expect_false (!next_sv))
1364	{	1606	{
1365	dSP;	1607	dSP;
…		…
1369	SAVETMPS;	1611	SAVETMPS;
1370		1612
1371	PUSHMARK (SP);	1613	PUSHMARK (SP);
1372	PUTBACK;	1614	PUTBACK;
1373	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1615	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1616	SPAGAIN;
1374		1617
1375	FREETMPS;	1618	FREETMPS;
1376	LEAVE;	1619	LEAVE;
1377	continue;	1620	continue;
1378	}	1621	}
…		…
1382	/* cannot transfer to destroyed coros, skip and look for next */	1625	/* cannot transfer to destroyed coros, skip and look for next */
1383	if (expect_false (ta->next->flags & CF_DESTROYED))	1626	if (expect_false (ta->next->flags & CF_DESTROYED))
1384	{	1627	{
1385	UNLOCK;	1628	UNLOCK;
1386	SvREFCNT_dec (next_sv);	1629	SvREFCNT_dec (next_sv);
1387	/* coro_nready is already taken care of by destroy */	1630	/* coro_nready has already been taken care of by destroy */
1388	continue;	1631	continue;
1389	}	1632	}
1390		1633
1391	--coro_nready;	1634	--coro_nready;
1392	UNLOCK;	1635	UNLOCK;
…		…
1395		1638
1396	/* free this only after the transfer */	1639	/* free this only after the transfer */
1397	prev_sv = SvRV (coro_current);	1640	prev_sv = SvRV (coro_current);
1398	ta->prev = SvSTATE (prev_sv);	1641	ta->prev = SvSTATE (prev_sv);
1399	TRANSFER_CHECK (*ta);	1642	TRANSFER_CHECK (*ta);
1400	assert (ta->next->flags & CF_READY);	1643	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));
1401	ta->next->flags &= ~CF_READY;	1644	ta->next->flags &= ~CF_READY;
1402	SvRV_set (coro_current, next_sv);	1645	SvRV_set (coro_current, next_sv);
1403		1646
1404	LOCK;	1647	LOCK;
1405	free_coro_mortal (aTHX);	1648	free_coro_mortal (aTHX);
1406	coro_mortal = prev_sv;	1649	coro_mortal = prev_sv;
1407	UNLOCK;	1650	UNLOCK;
1408	}	1651	}
1409		1652
1410	static void	1653	INLINE void
1411	prepare_cede (pTHX_ struct transfer_args *ta)	1654	prepare_cede (pTHX_ struct transfer_args *ta)
1412	{	1655	{
1413	api_ready (coro_current);	1656	api_ready (coro_current);
1414	prepare_schedule (aTHX_ ta);	1657	prepare_schedule (aTHX_ ta);
1415	}	1658	}
1416		1659
1417	static int	1660	static void
1418	prepare_cede_notself (pTHX_ struct transfer_args *ta)	1661	prepare_cede_notself (pTHX_ struct transfer_args *ta)
1419	{	1662	{
		1663	SV *prev = SvRV (coro_current);
		1664
1420	if (coro_nready)	1665	if (coro_nready)
1421	{	1666	{
1422	SV *prev = SvRV (coro_current);
1423	prepare_schedule (aTHX_ ta);	1667	prepare_schedule (aTHX_ ta);
1424	api_ready (prev);	1668	api_ready (prev);
		1669	}
		1670	else
		1671	ta->prev = ta->next = SvSTATE (prev);
		1672	}
		1673
		1674	static void
		1675	api_schedule (void)
		1676	{
		1677	dTHX;
		1678	struct transfer_args ta;
		1679
		1680	prepare_schedule (aTHX_ &ta);
		1681	TRANSFER (ta, 1);
		1682	}
		1683
		1684	static int
		1685	api_cede (void)
		1686	{
		1687	dTHX;
		1688	struct transfer_args ta;
		1689
		1690	prepare_cede (aTHX_ &ta);
		1691
		1692	if (expect_true (ta.prev != ta.next))
		1693	{
		1694	TRANSFER (ta, 1);
1425	return 1;	1695	return 1;
1426	}	1696	}
1427	else	1697	else
1428	return 0;	1698	return 0;
1429	}	1699	}
1430		1700
1431	static void
1432	api_schedule (void)
1433	{
1434	dTHX;
1435	struct transfer_args ta;
1436
1437	prepare_schedule (aTHX_ &ta);
1438	TRANSFER (ta);
1439	}
1440
1441	static int	1701	static int
1442	api_cede (void)	1702	api_cede_notself (void)
1443	{	1703	{
		1704	if (coro_nready)
		1705	{
1444	dTHX;	1706	dTHX;
1445	struct transfer_args ta;	1707	struct transfer_args ta;
1446		1708
1447	prepare_cede (aTHX_ &ta);	1709	prepare_cede_notself (aTHX_ &ta);
1448
1449	if (expect_true (ta.prev != ta.next))
1450	{
1451	TRANSFER (ta);	1710	TRANSFER (ta, 1);
1452	return 1;	1711	return 1;
1453	}	1712	}
1454	else	1713	else
1455	return 0;	1714	return 0;
1456	}	1715	}
1457		1716
1458	static int
1459	api_cede_notself (void)
1460	{
1461	dTHX;
1462	struct transfer_args ta;
1463
1464	if (prepare_cede_notself (aTHX_ &ta))
1465	{
1466	TRANSFER (ta);
1467	return 1;
1468	}
1469	else
1470	return 0;
1471	}
1472
1473	static void	1717	static void
1474	api_trace (SV *coro_sv, int flags)	1718	api_trace (SV *coro_sv, int flags)
1475	{	1719	{
1476	dTHX;	1720	dTHX;
1477	struct coro *coro = SvSTATE (coro_sv);	1721	struct coro *coro = SvSTATE (coro_sv);
1478		1722
1479	if (flags & CC_TRACE)	1723	if (flags & CC_TRACE)
1480	{	1724	{
1481	if (!coro->cctx)	1725	if (!coro->cctx)
1482	coro->cctx = cctx_new ();	1726	coro->cctx = cctx_new_run ();
1483	else if (!(coro->cctx->flags & CC_TRACE))	1727	else if (!(coro->cctx->flags & CC_TRACE))
1484	croak ("cannot enable tracing on coroutine with custom stack");	1728	croak ("cannot enable tracing on coroutine with custom stack");
1485		1729
1486	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1730	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1487	}	1731	}
…		…
1494	else	1738	else
1495	coro->slot->runops = RUNOPS_DEFAULT;	1739	coro->slot->runops = RUNOPS_DEFAULT;
1496	}	1740	}
1497	}	1741	}
1498		1742
		1743	#if 0
		1744	static int
		1745	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1746	{
		1747	AV *padlist;
		1748	AV *av = (AV *)mg->mg_obj;
		1749
		1750	abort ();
		1751
		1752	return 0;
		1753	}
		1754
		1755	static MGVTBL coro_gensub_vtbl = {
		1756	0, 0, 0, 0,
		1757	coro_gensub_free
		1758	};
		1759	#endif
		1760
		1761	/*****************************************************************************/
		1762	/* PerlIO::cede */
		1763
		1764	typedef struct
		1765	{
		1766	PerlIOBuf base;
		1767	NV next, every;
		1768	} PerlIOCede;
		1769
		1770	static IV
		1771	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1772	{
		1773	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1774
		1775	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1776	self->next = nvtime () + self->every;
		1777
		1778	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1779	}
		1780
		1781	static SV *
		1782	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1783	{
		1784	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1785
		1786	return newSVnv (self->every);
		1787	}
		1788
		1789	static IV
		1790	PerlIOCede_flush (pTHX_ PerlIO *f)
		1791	{
		1792	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1793	double now = nvtime ();
		1794
		1795	if (now >= self->next)
		1796	{
		1797	api_cede ();
		1798	self->next = now + self->every;
		1799	}
		1800
		1801	return PerlIOBuf_flush (aTHX_ f);
		1802	}
		1803
		1804	static PerlIO_funcs PerlIO_cede =
		1805	{
		1806	sizeof(PerlIO_funcs),
		1807	"cede",
		1808	sizeof(PerlIOCede),
		1809	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1810	PerlIOCede_pushed,
		1811	PerlIOBuf_popped,
		1812	PerlIOBuf_open,
		1813	PerlIOBase_binmode,
		1814	PerlIOCede_getarg,
		1815	PerlIOBase_fileno,
		1816	PerlIOBuf_dup,
		1817	PerlIOBuf_read,
		1818	PerlIOBuf_unread,
		1819	PerlIOBuf_write,
		1820	PerlIOBuf_seek,
		1821	PerlIOBuf_tell,
		1822	PerlIOBuf_close,
		1823	PerlIOCede_flush,
		1824	PerlIOBuf_fill,
		1825	PerlIOBase_eof,
		1826	PerlIOBase_error,
		1827	PerlIOBase_clearerr,
		1828	PerlIOBase_setlinebuf,
		1829	PerlIOBuf_get_base,
		1830	PerlIOBuf_bufsiz,
		1831	PerlIOBuf_get_ptr,
		1832	PerlIOBuf_get_cnt,
		1833	PerlIOBuf_set_ptrcnt,
		1834	};
		1835
		1836	/*****************************************************************************/
		1837
		1838	static const CV *ssl_cv; /* for quick consistency check */
		1839
		1840	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
		1841	static SV *ssl_arg0;
		1842	static SV *ssl_arg1;
		1843
		1844	/* this restores the stack in the case we patched the entersub, to */
		1845	/* recreate the stack frame as perl will on following calls */
		1846	/* since entersub cleared the stack */
		1847	static OP *
		1848	pp_restore (pTHX)
		1849	{
		1850	dSP;
		1851
		1852	PUSHMARK (SP);
		1853
		1854	EXTEND (SP, 3);
		1855	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
		1856	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
		1857	PUSHs ((SV *)CvGV (ssl_cv));
		1858
		1859	RETURNOP (ssl_restore.op_first);
		1860	}
		1861
		1862	#define OPpENTERSUB_SSL 15 /* the part of op_private entersub hopefully doesn't use */
		1863
		1864	/* declare prototype */
		1865	XS(XS_Coro__State__set_stacklevel);
		1866
		1867	/*
		1868	* these not obviously related functions are all rolled into one
		1869	* function to increase chances that they all will call transfer with the same
		1870	* stack offset
		1871	*/
		1872	static OP *
		1873	pp_set_stacklevel (pTHX)
		1874	{
		1875	dSP;
		1876	struct transfer_args ta;
		1877	SV **arg = PL_stack_base + TOPMARK + 1;
		1878	int items = SP - arg; /* args without function object */
		1879
		1880	/* do a quick consistency check on the "function" object, and if it isn't */
		1881	/* for us, divert to the real entersub */
		1882	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1883	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1884
		1885	/* pop args */
		1886	SP = PL_stack_base + POPMARK;
		1887
		1888	if (!(PL_op->op_flags & OPf_STACKED))
		1889	{
		1890	/* ampersand-form of call, use @_ instead of stack */
		1891	AV *av = GvAV (PL_defgv);
		1892	arg = AvARRAY (av);
		1893	items = AvFILLp (av) + 1;
		1894	}
		1895
		1896	PUTBACK;
		1897	switch (PL_op->op_private & OPpENTERSUB_SSL)
		1898	{
		1899	case 0:
		1900	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1901	break;
		1902
		1903	case 1:
		1904	if (items != 2)
		1905	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1906
		1907	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1908	break;
		1909
		1910	case 2:
		1911	prepare_schedule (aTHX_ &ta);
		1912	break;
		1913
		1914	case 3:
		1915	prepare_cede (aTHX_ &ta);
		1916	break;
		1917
		1918	case 4:
		1919	prepare_cede_notself (aTHX_ &ta);
		1920	break;
		1921	}
		1922
		1923	TRANSFER (ta, 0);
		1924	SPAGAIN;
		1925
		1926	skip:
		1927	PUTBACK;
		1928	SSL_TAIL;
		1929	SPAGAIN;
		1930	RETURN;
		1931	}
		1932
		1933	static void
		1934	coro_ssl_patch (pTHX_ CV *cv, int ix, SV **args, int items)
		1935	{
		1936	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
		1937
		1938	assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
		1939	ssl_cv = cv;
		1940
		1941	/* we patch the op, and then re-run the whole call */
		1942	/* we have to put some dummy argument on the stack for this to work */
		1943	ssl_restore.op_next = (OP *)&ssl_restore;
		1944	ssl_restore.op_type = OP_NULL;
		1945	ssl_restore.op_ppaddr = pp_restore;
		1946	ssl_restore.op_first = PL_op;
		1947
		1948	ssl_arg0 = items > 0 ? SvREFCNT_inc (args [0]) : 0;
		1949	ssl_arg1 = items > 1 ? SvREFCNT_inc (args [1]) : 0;
		1950
		1951	PL_op->op_ppaddr = pp_set_stacklevel;
		1952	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
		1953
		1954	PL_op = (OP *)&ssl_restore;
		1955	}
		1956
1499	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1957	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1500		1958
1501	PROTOTYPES: DISABLE	1959	PROTOTYPES: DISABLE
1502		1960
1503	BOOT:	1961	BOOT:
1504	{	1962	{
1505	#ifdef USE_ITHREADS	1963	#ifdef USE_ITHREADS
1506	MUTEX_INIT (&coro_mutex);	1964	MUTEX_INIT (&coro_lock);
		1965	# if CORO_PTHREAD
		1966	coro_thx = PERL_GET_CONTEXT;
		1967	# endif
1507	#endif	1968	#endif
1508	BOOT_PAGESIZE;	1969	BOOT_PAGESIZE;
1509		1970
1510	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	1971	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1511	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	1972	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1512		1973
		1974	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1975	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1976	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1977
1513	hv_sig = coro_get_hv ("SIG", TRUE);	1978	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
1514	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);	1979	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
1515	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);	1980	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1516
1517	if (!PL_diehook ) hv_store (hv_sig, strpair ("__DIE__" ), SvREFCNT_inc (sv_diehook ), 0);
1518	if (!PL_warnhook) hv_store (hv_sig, strpair ("__WARN__"), SvREFCNT_inc (sv_warnhook), 0);
1519		1981
1520	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1982	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1521		1983
1522	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1984	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1523	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1985	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1528	main_top_env = PL_top_env;	1990	main_top_env = PL_top_env;
1529		1991
1530	while (main_top_env->je_prev)	1992	while (main_top_env->je_prev)
1531	main_top_env = main_top_env->je_prev;	1993	main_top_env = main_top_env->je_prev;
1532		1994
1533	coroapi.ver = CORO_API_VERSION;	1995	coroapi.ver = CORO_API_VERSION;
1534	coroapi.rev = CORO_API_REVISION;	1996	coroapi.rev = CORO_API_REVISION;
1535	coroapi.transfer = api_transfer;	1997	coroapi.transfer = api_transfer;
		1998
		1999	{
		2000	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		2001
		2002	if (!svp) croak ("Time::HiRes is required");
		2003	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		2004
		2005	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		2006	}
1536		2007
1537	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	2008	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1538	}	2009	}
1539		2010
1540	SV *	2011	SV *
1541	new (char *klass, ...)	2012	new (char *klass, ...)
1542	CODE:	2013	CODE:
1543	{	2014	{
1544	struct coro *coro;	2015	struct coro *coro;
		2016	MAGIC *mg;
1545	HV *hv;	2017	HV *hv;
1546	int i;	2018	int i;
1547		2019
1548	Newz (0, coro, 1, struct coro);	2020	Newz (0, coro, 1, struct coro);
1549	coro->args = newAV ();	2021	coro->args = newAV ();
…		…
1552	if (coro_first) coro_first->prev = coro;	2024	if (coro_first) coro_first->prev = coro;
1553	coro->next = coro_first;	2025	coro->next = coro_first;
1554	coro_first = coro;	2026	coro_first = coro;
1555		2027
1556	coro->hv = hv = newHV ();	2028	coro->hv = hv = newHV ();
1557	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	2029	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		2030	mg->mg_flags |= MGf_DUP;
1558	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	2031	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1559		2032
1560	av_extend (coro->args, items - 1);	2033	av_extend (coro->args, items - 1);
1561	for (i = 1; i < items; i++)	2034	for (i = 1; i < items; i++)
1562	av_push (coro->args, newSVsv (ST (i)));	2035	av_push (coro->args, newSVsv (ST (i)));
1563	}	2036	}
1564	OUTPUT:	2037	OUTPUT:
1565	RETVAL	2038	RETVAL
1566		2039
1567	# these not obviously related functions are all rolled into the same xs
1568	# function to increase chances that they all will call transfer with the same
1569	# stack offset
1570	void	2040	void
1571	_set_stacklevel (...)	2041	_set_stacklevel (...)
1572	ALIAS:	2042	ALIAS:
1573	Coro::State::transfer = 1	2043	Coro::State::transfer = 1
1574	Coro::schedule = 2	2044	Coro::schedule = 2
1575	Coro::cede = 3	2045	Coro::cede = 3
1576	Coro::cede_notself = 4	2046	Coro::cede_notself = 4
1577	CODE:	2047	CODE:
1578	{	2048	coro_ssl_patch (aTHX_ cv, ix, &ST (0), items);
1579	struct transfer_args ta;
1580
1581	switch (ix)
1582	{
1583	case 0:
1584	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1585	ta.next = 0;
1586	break;
1587
1588	case 1:
1589	if (items != 2)
1590	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1591
1592	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1593	break;
1594
1595	case 2:
1596	prepare_schedule (aTHX_ &ta);
1597	break;
1598
1599	case 3:
1600	prepare_cede (aTHX_ &ta);
1601	break;
1602
1603	case 4:
1604	if (!prepare_cede_notself (aTHX_ &ta))
1605	XSRETURN_EMPTY;
1606
1607	break;
1608	}
1609
1610	BARRIER;
1611	PUTBACK;
1612	TRANSFER (ta);
1613	SPAGAIN; /* might be the sp of a different coroutine now */
1614	/* be extra careful not to ever do anything after TRANSFER */
1615	}
1616		2049
1617	bool	2050	bool
1618	_destroy (SV *coro_sv)	2051	_destroy (SV *coro_sv)
1619	CODE:	2052	CODE:
1620	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2053	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1621	OUTPUT:	2054	OUTPUT:
1622	RETVAL	2055	RETVAL
1623		2056
1624	void	2057	void
1625	_exit (code)	2058	_exit (int code)
1626	int code
1627	PROTOTYPE: $	2059	PROTOTYPE: $
1628	CODE:	2060	CODE:
1629	_exit (code);	2061	_exit (code);
1630		2062
1631	int	2063	int
1632	cctx_stacksize (int new_stacksize = 0)	2064	cctx_stacksize (int new_stacksize = 0)
1633	CODE:	2065	CODE:
1634	RETVAL = coro_stacksize;	2066	RETVAL = cctx_stacksize;
1635	if (new_stacksize)	2067	if (new_stacksize)
		2068	{
1636	coro_stacksize = new_stacksize;	2069	cctx_stacksize = new_stacksize;
		2070	++cctx_gen;
		2071	}
		2072	OUTPUT:
		2073	RETVAL
		2074
		2075	int
		2076	cctx_max_idle (int max_idle = 0)
		2077	CODE:
		2078	RETVAL = cctx_max_idle;
		2079	if (max_idle > 1)
		2080	cctx_max_idle = max_idle;
1637	OUTPUT:	2081	OUTPUT:
1638	RETVAL	2082	RETVAL
1639		2083
1640	int	2084	int
1641	cctx_count ()	2085	cctx_count ()
…		…
1665	call (Coro::State coro, SV *coderef)	2109	call (Coro::State coro, SV *coderef)
1666	ALIAS:	2110	ALIAS:
1667	eval = 1	2111	eval = 1
1668	CODE:	2112	CODE:
1669	{	2113	{
1670	if (coro->mainstack)	2114	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1671	{	2115	{
1672	struct coro temp;	2116	struct coro temp;
1673		2117
1674	if (!(coro->flags & CF_RUNNING))	2118	if (!(coro->flags & CF_RUNNING))
1675	{	2119	{
		2120	PUTBACK;
1676	save_perl (aTHX_ &temp);	2121	save_perl (aTHX_ &temp);
1677	load_perl (aTHX_ coro);	2122	load_perl (aTHX_ coro);
1678	}	2123	}
1679		2124
1680	{	2125	{
…		…
1699		2144
1700	if (!(coro->flags & CF_RUNNING))	2145	if (!(coro->flags & CF_RUNNING))
1701	{	2146	{
1702	save_perl (aTHX_ coro);	2147	save_perl (aTHX_ coro);
1703	load_perl (aTHX_ &temp);	2148	load_perl (aTHX_ &temp);
		2149	SPAGAIN;
1704	}	2150	}
1705	}	2151	}
1706	}	2152	}
1707		2153
1708	SV *	2154	SV *
…		…
1717	RETVAL = boolSV (coro->flags & ix);	2163	RETVAL = boolSV (coro->flags & ix);
1718	OUTPUT:	2164	OUTPUT:
1719	RETVAL	2165	RETVAL
1720		2166
1721	void	2167	void
		2168	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2169	PROTOTYPE: $;$
		2170	CODE:
		2171	SvREFCNT_dec (self->throw);
		2172	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2173
		2174	void
1722	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2175	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1723		2176
1724	SV *	2177	SV *
1725	has_stack (Coro::State coro)	2178	has_cctx (Coro::State coro)
1726	PROTOTYPE: $	2179	PROTOTYPE: $
1727	CODE:	2180	CODE:
1728	RETVAL = boolSV (!!coro->cctx);	2181	RETVAL = boolSV (!!coro->cctx);
1729	OUTPUT:	2182	OUTPUT:
1730	RETVAL	2183	RETVAL
…		…
1735	CODE:	2188	CODE:
1736	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2189	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1737	OUTPUT:	2190	OUTPUT:
1738	RETVAL	2191	RETVAL
1739		2192
1740	IV	2193	UV
1741	rss (Coro::State coro)	2194	rss (Coro::State coro)
1742	PROTOTYPE: $	2195	PROTOTYPE: $
1743	ALIAS:	2196	ALIAS:
1744	usecount = 1	2197	usecount = 1
1745	CODE:	2198	CODE:
…		…
1749	case 1: RETVAL = coro->usecount; break;	2202	case 1: RETVAL = coro->usecount; break;
1750	}	2203	}
1751	OUTPUT:	2204	OUTPUT:
1752	RETVAL	2205	RETVAL
1753		2206
		2207	void
		2208	force_cctx ()
		2209	CODE:
		2210	struct coro *coro = SvSTATE (coro_current);
		2211	coro->cctx->idle_sp = 0;
		2212
		2213	void
		2214	swap_defsv (Coro::State self)
		2215	PROTOTYPE: $
		2216	ALIAS:
		2217	swap_defav = 1
		2218	CODE:
		2219	if (!self->slot)
		2220	croak ("cannot swap state with coroutine that has no saved state");
		2221	else
		2222	{
		2223	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2224	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2225
		2226	SV *tmp = *src; *src = *dst; *dst = tmp;
		2227	}
1754		2228
1755	MODULE = Coro::State PACKAGE = Coro	2229	MODULE = Coro::State PACKAGE = Coro
1756		2230
1757	BOOT:	2231	BOOT:
1758	{	2232	{
1759	int i;	2233	int i;
1760		2234
1761	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1762	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1763	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2235	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2236	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2237	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1764		2238
1765	coro_current = coro_get_sv ("Coro::current", FALSE);	2239	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1766	SvREADONLY_on (coro_current);	2240	SvREADONLY_on (coro_current);
1767		2241
1768	coro_stash = gv_stashpv ("Coro", TRUE);	2242	coro_stash = gv_stashpv ("Coro", TRUE);
1769		2243
1770	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2244	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1776		2250
1777	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2251	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1778	coro_ready[i] = newAV ();	2252	coro_ready[i] = newAV ();
1779		2253
1780	{	2254	{
1781	SV *sv = perl_get_sv ("Coro::API", TRUE);	2255	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1782	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1783		2256
1784	coroapi.schedule = api_schedule;	2257	coroapi.schedule = api_schedule;
1785	coroapi.cede = api_cede;	2258	coroapi.cede = api_cede;
1786	coroapi.cede_notself = api_cede_notself;	2259	coroapi.cede_notself = api_cede_notself;
1787	coroapi.ready = api_ready;	2260	coroapi.ready = api_ready;
…		…
1798	void	2271	void
1799	_set_current (SV *current)	2272	_set_current (SV *current)
1800	PROTOTYPE: $	2273	PROTOTYPE: $
1801	CODE:	2274	CODE:
1802	SvREFCNT_dec (SvRV (coro_current));	2275	SvREFCNT_dec (SvRV (coro_current));
1803	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2276	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2277
		2278	void
		2279	_set_readyhook (SV *hook)
		2280	PROTOTYPE: $
		2281	CODE:
		2282	LOCK;
		2283	SvREFCNT_dec (coro_readyhook);
		2284	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2285	UNLOCK;
1804		2286
1805	int	2287	int
1806	prio (Coro::State coro, int newprio = 0)	2288	prio (Coro::State coro, int newprio = 0)
1807	ALIAS:	2289	ALIAS:
1808	nice = 1	2290	nice = 1
…		…
1838	CODE:	2320	CODE:
1839	RETVAL = coro_nready;	2321	RETVAL = coro_nready;
1840	OUTPUT:	2322	OUTPUT:
1841	RETVAL	2323	RETVAL
1842		2324
1843	void
1844	throw (Coro::State self, SV *throw = &PL_sv_undef)
1845	PROTOTYPE: $;$
1846	CODE:
1847	SvREFCNT_dec (self->throw);
1848	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1849
1850	# for async_pool speedup	2325	# for async_pool speedup
1851	void	2326	void
1852	_pool_1 (SV *cb)	2327	_pool_1 (SV *cb)
1853	CODE:	2328	CODE:
1854	{	2329	{
1855	struct coro *coro = SvSTATE (coro_current);	2330	struct coro *coro = SvSTATE (coro_current);
1856	HV *hv = (HV *)SvRV (coro_current);	2331	HV *hv = (HV *)SvRV (coro_current);
1857	AV *defav = GvAV (PL_defgv);	2332	AV *defav = GvAV (PL_defgv);
1858	SV *invoke = hv_delete (hv, strpair ("_invoke"), 0);	2333	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1859	AV *invoke_av;	2334	AV *invoke_av;
1860	int i, len;	2335	int i, len;
1861		2336
1862	if (!invoke)	2337	if (!invoke)
		2338	{
		2339	SV *old = PL_diehook;
		2340	PL_diehook = 0;
		2341	SvREFCNT_dec (old);
1863	croak ("\3async_pool terminate\2\n");	2342	croak ("\3async_pool terminate\2\n");
		2343	}
1864		2344
1865	SvREFCNT_dec (coro->saved_deffh);	2345	SvREFCNT_dec (coro->saved_deffh);
1866	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2346	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1867		2347
1868	hv_store (hv, "desc", sizeof ("desc") - 1,	2348	hv_store (hv, "desc", sizeof ("desc") - 1,
1869	newSVpvn (strpair ("[async_pool]")), 0);	2349	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1870		2350
1871	invoke_av = (AV *)SvRV (invoke);	2351	invoke_av = (AV *)SvRV (invoke);
1872	len = av_len (invoke_av);	2352	len = av_len (invoke_av);
1873		2353
1874	sv_setsv (cb, AvARRAY (invoke_av)[0]);	2354	sv_setsv (cb, AvARRAY (invoke_av)[0]);
1875		2355
1876	if (len > 0)	2356	if (len > 0)
1877	{	2357	{
1878	av_fill (defav, len - 1);	2358	av_fill (defav, len - 1);
1879	for (i = 0; i < len; ++i)	2359	for (i = 0; i < len; ++i)
1880	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2360	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1881	}	2361	}
1882		2362
1883	SvREFCNT_dec (invoke);	2363	SvREFCNT_dec (invoke);
1884	}	2364	}
1885		2365
…		…
1892	sv_setsv (cb, &PL_sv_undef);	2372	sv_setsv (cb, &PL_sv_undef);
1893		2373
1894	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2374	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1895	coro->saved_deffh = 0;	2375	coro->saved_deffh = 0;
1896		2376
1897	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2377	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1898	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2378	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2379	{
		2380	SV *old = PL_diehook;
		2381	PL_diehook = 0;
		2382	SvREFCNT_dec (old);
1899	croak ("\3async_pool terminate\2\n");	2383	croak ("\3async_pool terminate\2\n");
		2384	}
1900		2385
1901	av_clear (GvAV (PL_defgv));	2386	av_clear (GvAV (PL_defgv));
1902	hv_store ((HV *)SvRV (coro_current), strpair ("desc"),	2387	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1903	newSVpvn (strpair ("[async_pool idle]")), 0);	2388	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1904		2389
1905	coro->prio = 0;	2390	coro->prio = 0;
1906		2391
1907	if (coro->cctx && (coro->cctx->flags & CC_TRACE))	2392	if (coro->cctx && (coro->cctx->flags & CC_TRACE))
1908	api_trace (coro_current, 0);	2393	api_trace (coro_current, 0);
1909		2394
1910	av_push (av_async_pool, newSVsv (coro_current));	2395	av_push (av_async_pool, newSVsv (coro_current));
1911	}	2396	}
1912		2397
		2398	#if 0
		2399
		2400	void
		2401	_generator_call (...)
		2402	PROTOTYPE: @
		2403	PPCODE:
		2404	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2405	xxxx
		2406	abort ();
		2407
		2408	SV *
		2409	gensub (SV *sub, ...)
		2410	PROTOTYPE: &;@
		2411	CODE:
		2412	{
		2413	struct coro *coro;
		2414	MAGIC *mg;
		2415	CV *xcv;
		2416	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2417	int i;
		2418
		2419	CvGV (ncv) = CvGV (cv);
		2420	CvFILE (ncv) = CvFILE (cv);
		2421
		2422	Newz (0, coro, 1, struct coro);
		2423	coro->args = newAV ();
		2424	coro->flags = CF_NEW;
		2425
		2426	av_extend (coro->args, items - 1);
		2427	for (i = 1; i < items; i++)
		2428	av_push (coro->args, newSVsv (ST (i)));
		2429
		2430	CvISXSUB_on (ncv);
		2431	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2432
		2433	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2434
		2435	CvXSUB (ncv) = CvXSUB (xcv);
		2436	CvANON_on (ncv);
		2437
		2438	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2439	RETVAL = newRV_noinc ((SV *)ncv);
		2440	}
		2441	OUTPUT:
		2442	RETVAL
		2443
		2444	#endif
		2445
1913		2446
1914	MODULE = Coro::State PACKAGE = Coro::AIO	2447	MODULE = Coro::State PACKAGE = Coro::AIO
1915		2448
1916	SV *	2449	void
1917	_get_state ()	2450	_get_state (SV *self)
1918	CODE:	2451	PPCODE:
1919	{	2452	{
1920	struct io_state *data;	2453	AV *defav = GvAV (PL_defgv);
1921		2454	AV *av = newAV ();
		2455	int i;
1922	RETVAL = newSV (sizeof (struct io_state));	2456	SV *data_sv = newSV (sizeof (struct io_state));
1923	data = (struct io_state *)SvPVX (RETVAL);	2457	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1924	SvCUR_set (RETVAL, sizeof (struct io_state));	2458	SvCUR_set (data_sv, sizeof (struct io_state));
1925	SvPOK_only (RETVAL);	2459	SvPOK_only (data_sv);
1926		2460
1927	data->errorno = errno;	2461	data->errorno = errno;
1928	data->laststype = PL_laststype;	2462	data->laststype = PL_laststype;
1929	data->laststatval = PL_laststatval;	2463	data->laststatval = PL_laststatval;
1930	data->statcache = PL_statcache;	2464	data->statcache = PL_statcache;
		2465
		2466	av_extend (av, AvFILLp (defav) + 1 + 1);
		2467
		2468	for (i = 0; i <= AvFILLp (defav); ++i)
		2469	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2470
		2471	av_push (av, data_sv);
		2472
		2473	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2474
		2475	api_ready (self);
1931	}	2476	}
1932	OUTPUT:
1933	RETVAL
1934		2477
1935	void	2478	void
1936	_set_state (char *data_)	2479	_set_state (SV *state)
1937	PROTOTYPE: $	2480	PROTOTYPE: $
1938	CODE:	2481	PPCODE:
1939	{	2482	{
1940	struct io_state *data = (void *)data_;	2483	AV *av = (AV *)SvRV (state);
		2484	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2485	int i;
1941		2486
1942	errno = data->errorno;	2487	errno = data->errorno;
1943	PL_laststype = data->laststype;	2488	PL_laststype = data->laststype;
1944	PL_laststatval = data->laststatval;	2489	PL_laststatval = data->laststatval;
1945	PL_statcache = data->statcache;	2490	PL_statcache = data->statcache;
1946	}
1947		2491
		2492	EXTEND (SP, AvFILLp (av));
		2493	for (i = 0; i < AvFILLp (av); ++i)
		2494	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2495	}
		2496
		2497
		2498	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2499
		2500	BOOT:
		2501	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2502
		2503	SV *
		2504	_schedule (...)
		2505	PROTOTYPE: @
		2506	CODE:
		2507	{
		2508	static int incede;
		2509
		2510	api_cede_notself ();
		2511
		2512	++incede;
		2513	while (coro_nready >= incede && api_cede ())
		2514	;
		2515
		2516	sv_setsv (sv_activity, &PL_sv_undef);
		2517	if (coro_nready >= incede)
		2518	{
		2519	PUSHMARK (SP);
		2520	PUTBACK;
		2521	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2522	SPAGAIN;
		2523	}
		2524
		2525	--incede;
		2526	}
		2527
		2528
		2529	MODULE = Coro::State PACKAGE = PerlIO::cede
		2530
		2531	BOOT:
		2532	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2533

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