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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.199 by root, Sun Oct 7 13:53:37 2007 UTC vs.
Revision 1.266 by root, Fri Nov 14 03:26:22 2008 UTC

…		…
4	#define PERL_EXT	4	#define PERL_EXT
5		5
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
9		10
10	#include "patchlevel.h"	11	#include "patchlevel.h"
11		12
12	#include <stdio.h>	13	#include <stdio.h>
13	#include <errno.h>	14	#include <errno.h>
14	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
15		25
16	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
17	# include <unistd.h>	27	# include <unistd.h>
18	# include <sys/mman.h>	28	# include <sys/mman.h>
19	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
36	# define BOOT_PAGESIZE (void)0	46	# define BOOT_PAGESIZE (void)0
37	#endif	47	#endif
38		48
39	#if CORO_USE_VALGRIND	49	#if CORO_USE_VALGRIND
40	# include <valgrind/valgrind.h>	50	# include <valgrind/valgrind.h>
41	# define REGISTER_STACK(cctx,start,end) (cctx)->valgrind_id = VALGRIND_STACK_REGISTER ((start), (end))
42	#else
43	# define REGISTER_STACK(cctx,start,end)
44	#endif	51	#endif
45		52
46	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
47	#define MAX_IDLE_CCTX 8	54	static int cctx_max_idle = 4;
48		55
49	#define PERL_VERSION_ATLEAST(a,b,c) \	56	#define PERL_VERSION_ATLEAST(a,b,c) \
50	(PERL_REVISION > (a) \	57	(PERL_REVISION > (a) \
51	|| (PERL_REVISION == (a) \	58	|| (PERL_REVISION == (a) \
52	&& (PERL_VERSION > (b) \	59	&& (PERL_VERSION > (b) \
…		…
71	# ifndef IS_PADCONST	78	# ifndef IS_PADCONST
72	# define IS_PADCONST(v) 0	79	# define IS_PADCONST(v) 0
73	# endif	80	# endif
74	#endif	81	#endif
75		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
76	/* 5.8.7 */	101	/* 5.8.7 */
77	#ifndef SvRV_set	102	#ifndef SvRV_set
78	# define SvRV_set(s,v) SvRV(s) = (v)	103	# define SvRV_set(s,v) SvRV(s) = (v)
79	#endif
80
81	/* 5.8.8 */
82	#ifndef GV_NOTQUAL
83	# define GV_NOTQUAL 0
84	#endif
85	#ifndef newSV
86	# define newSV(l) NEWSV(0,l)
87	#endif	104	#endif
88		105
89	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	106	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
90	# undef CORO_STACKGUARD	107	# undef CORO_STACKGUARD
91	#endif	108	#endif
…		…
106		123
107	#define IN_DESTRUCT (PL_main_cv == Nullcv)	124	#define IN_DESTRUCT (PL_main_cv == Nullcv)
108		125
109	#if __GNUC__ >= 3	126	#if __GNUC__ >= 3
110	# define attribute(x) __attribute__(x)	127	# define attribute(x) __attribute__(x)
111	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
112	# define expect(expr,value) __builtin_expect ((expr),(value))	128	# define expect(expr,value) __builtin_expect ((expr),(value))
		129	# define INLINE static inline
113	#else	130	#else
114	# define attribute(x)	131	# define attribute(x)
115	# define BARRIER
116	# define expect(expr,value) (expr)	132	# define expect(expr,value) (expr)
		133	# define INLINE static
117	#endif	134	#endif
118		135
119	#define expect_false(expr) expect ((expr) != 0, 0)	136	#define expect_false(expr) expect ((expr) != 0, 0)
120	#define expect_true(expr) expect ((expr) != 0, 1)	137	#define expect_true(expr) expect ((expr) != 0, 1)
121		138
122	#define NOINLINE attribute ((noinline))	139	#define NOINLINE attribute ((noinline))
123		140
124	#include "CoroAPI.h"	141	#include "CoroAPI.h"
125		142
126	#ifdef USE_ITHREADS	143	#ifdef USE_ITHREADS
		144
127	static perl_mutex coro_mutex;	145	static perl_mutex coro_lock;
128	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	146	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
129	# 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
130	#else	152	#else
		153
131	# define LOCK (void)0	154	# define LOCK (void)0
132	# define UNLOCK (void)0	155	# define UNLOCK (void)0
		156
133	#endif	157	#endif
		158
		159	# undef LOCK
		160	# define LOCK (void)0
		161	# undef UNLOCK
		162	# define UNLOCK (void)0
134		163
135	/* helper storage struct for Coro::AIO */	164	/* helper storage struct for Coro::AIO */
136	struct io_state	165	struct io_state
137	{	166	{
		167	AV *res;
138	int errorno;	168	int errorno;
139	I32 laststype;	169	I32 laststype; /* U16 in 5.10.0 */
140	int laststatval;	170	int laststatval;
141	Stat_t statcache;	171	Stat_t statcache;
142	};	172	};
143		173
		174	static double (*nvtime)(); /* so why doesn't it take void? */
		175
		176	static U32 cctx_gen;
144	static size_t coro_stacksize = CORO_STACKSIZE;	177	static size_t cctx_stacksize = CORO_STACKSIZE;
145	static struct CoroAPI coroapi;	178	static struct CoroAPI coroapi;
146	static AV *main_mainstack; /* used to differentiate between $main and others */	179	static AV *main_mainstack; /* used to differentiate between $main and others */
147	static JMPENV *main_top_env;	180	static JMPENV *main_top_env;
148	static HV *coro_state_stash, *coro_stash;	181	static HV *coro_state_stash, *coro_stash;
149	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	};
150		189
151	static GV *irsgv; /* $/ */	190	static GV *irsgv; /* $/ */
152	static GV *stdoutgv; /* *STDOUT */	191	static GV *stdoutgv; /* *STDOUT */
153	static SV *sv_diehook;	192	static SV *rv_diehook;
154	static SV *sv_warnhook;	193	static SV *rv_warnhook;
		194	static HV *hv_sig; /* %SIG */
155		195
156	/* async_pool helper stuff */	196	/* async_pool helper stuff */
157	static SV *sv_pool_rss;	197	static SV *sv_pool_rss;
158	static SV *sv_pool_size;	198	static SV *sv_pool_size;
159	static AV *av_async_pool;	199	static AV *av_async_pool;
		200
		201	/* Coro::AnyEvent */
		202	static SV *sv_activity;
160		203
161	static struct coro_cctx *cctx_first;	204	static struct coro_cctx *cctx_first;
162	static int cctx_count, cctx_idle;	205	static int cctx_count, cctx_idle;
163		206
164	enum {	207	enum {
…		…
182	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	225	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
183	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 */
184	JMPENV *top_env;	227	JMPENV *top_env;
185	coro_context cctx;	228	coro_context cctx;
186		229
		230	U32 gen;
187	#if CORO_USE_VALGRIND	231	#if CORO_USE_VALGRIND
188	int valgrind_id;	232	int valgrind_id;
189	#endif	233	#endif
190	unsigned char flags;	234	unsigned char flags;
191	} coro_cctx;	235	} coro_cctx;
…		…
217		261
218	/* process data */	262	/* process data */
219	AV *mainstack;	263	AV *mainstack;
220	perl_slots *slot; /* basically the saved sp */	264	perl_slots *slot; /* basically the saved sp */
221		265
222	/* data associated with this coroutine (initial args) */	266	AV *args; /* data associated with this coroutine (initial args) */
223	AV *args;	267	int refcnt; /* coroutines are refcounted, yes */
224	int refcnt;
225	int flags; /* CF_ flags */	268	int flags; /* CF_ flags */
		269	HV *hv; /* the perl hash associated with this coro, if any */
226		270
227	/* statistics */	271	/* statistics */
228	int usecount; /* number of transfers to this coro */	272	int usecount; /* number of transfers to this coro */
229		273
230	/* coro process data */	274	/* coro process data */
231	int prio;	275	int prio;
232	SV *throw;	276	SV *throw; /* exception to be thrown */
233		277
234	/* async_pool */	278	/* async_pool */
235	SV *saved_deffh;	279	SV *saved_deffh;
236		280
237	/* linked list */	281	/* linked list */
238	struct coro *next, *prev;	282	struct coro *next, *prev;
239	HV *hv; /* the perl hash associated with this coro, if any */
240	};	283	};
241		284
242	typedef struct coro *Coro__State;	285	typedef struct coro *Coro__State;
243	typedef struct coro *Coro__State_or_hashref;	286	typedef struct coro *Coro__State_or_hashref;
244		287
…		…
251	#define PRIO_IDLE -3	294	#define PRIO_IDLE -3
252	#define PRIO_MIN -4	295	#define PRIO_MIN -4
253		296
254	/* for Coro.pm */	297	/* for Coro.pm */
255	static SV *coro_current;	298	static SV *coro_current;
		299	static SV *coro_readyhook;
256	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	300	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
257	static int coro_nready;	301	static int coro_nready;
258	static struct coro *coro_first;	302	static struct coro *coro_first;
259		303
260	/** lowlevel stuff **********************************************************/	304	/** lowlevel stuff **********************************************************/
261		305
262	static SV *	306	static SV *
263	coro_get_sv (const char *name, int create)	307	coro_get_sv (pTHX_ const char *name, int create)
264	{	308	{
265	#if PERL_VERSION_ATLEAST (5,9,0)	309	#if PERL_VERSION_ATLEAST (5,10,0)
266	/* 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 */
267	get_sv (name, create);	311	get_sv (name, create);
268	#endif	312	#endif
269	return get_sv (name, create);	313	return get_sv (name, create);
270	}	314	}
271		315
272	static SV *	316	static AV *
273	coro_get_av (const char *name, int create)	317	coro_get_av (pTHX_ const char *name, int create)
274	{	318	{
275	#if PERL_VERSION_ATLEAST (5,9,0)	319	#if PERL_VERSION_ATLEAST (5,10,0)
276	/* 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 */
277	get_av (name, create);	321	get_av (name, create);
278	#endif	322	#endif
279	return get_av (name, create);	323	return get_av (name, create);
280	}	324	}
281		325
		326	static HV *
		327	coro_get_hv (pTHX_ const char *name, int create)
		328	{
		329	#if PERL_VERSION_ATLEAST (5,10,0)
		330	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		331	get_hv (name, create);
		332	#endif
		333	return get_hv (name, create);
		334	}
		335
282	static AV *	336	static AV *
283	coro_clone_padlist (pTHX_ CV *cv)	337	coro_clone_padlist (pTHX_ CV *cv)
284	{	338	{
285	AV *padlist = CvPADLIST (cv);	339	AV *padlist = CvPADLIST (cv);
286	AV *newpadlist, *newpad;	340	AV *newpadlist, *newpad;
287		341
288	newpadlist = newAV ();	342	newpadlist = newAV ();
289	AvREAL_off (newpadlist);	343	AvREAL_off (newpadlist);
290	#if PERL_VERSION_ATLEAST (5,9,0)	344	#if PERL_VERSION_ATLEAST (5,10,0)
291	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	345	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
292	#else	346	#else
293	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	347	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
294	#endif	348	#endif
295	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	349	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
296	--AvFILLp (padlist);	350	--AvFILLp (padlist);
297		351
298	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	352	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
299	av_store (newpadlist, 1, (SV *)newpad);	353	av_store (newpadlist, 1, (SV *)newpad);
300		354
301	return newpadlist;	355	return newpadlist;
302	}	356	}
303		357
…		…
333		387
334	/* casting is fun. */	388	/* casting is fun. */
335	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	389	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
336	free_padlist (aTHX_ padlist);	390	free_padlist (aTHX_ padlist);
337		391
338	SvREFCNT_dec (av);	392	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
339		393
340	return 0;	394	return 0;
341	}	395	}
342		396
343	#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
344		399
345	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	};
346		404
347	#define CORO_MAGIC(cv) \	405	#define CORO_MAGIC(sv, type) \
348	SvMAGIC (cv) \	406	SvMAGIC (sv) \
349	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	407	? SvMAGIC (sv)->mg_type == type \
350	? SvMAGIC (cv) \	408	? SvMAGIC (sv) \
351	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	409	: mg_find (sv, type) \
352	: 0	410	: 0
353		411
354	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 *
355	SvSTATE_ (pTHX_ SV *coro)	416	SvSTATE_ (pTHX_ SV *coro)
356	{	417	{
357	HV *stash;	418	HV *stash;
358	MAGIC *mg;	419	MAGIC *mg;
359		420
…		…
369	/* very slow, but rare, check */	430	/* very slow, but rare, check */
370	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	431	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
371	croak ("Coro::State object required");	432	croak ("Coro::State object required");
372	}	433	}
373		434
374	mg = CORO_MAGIC (coro);	435	mg = CORO_MAGIC_state (coro);
375	return (struct coro *)mg->mg_ptr;	436	return (struct coro *)mg->mg_ptr;
376	}	437	}
377		438
378	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	439	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
379		440
380	/* the next two functions merely cache the padlists */	441	/* the next two functions merely cache the padlists */
381	static void	442	static void
382	get_padlist (pTHX_ CV *cv)	443	get_padlist (pTHX_ CV *cv)
383	{	444	{
384	MAGIC *mg = CORO_MAGIC (cv);	445	MAGIC *mg = CORO_MAGIC_cv (cv);
385	AV *av;	446	AV *av;
386		447
387	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))	448	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
388	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	449	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
389	else	450	else
390	{	451	{
391	#if CORO_PREFER_PERL_FUNCTIONS	452	#if CORO_PREFER_PERL_FUNCTIONS
392	/* this is probably cleaner, but also slower? */	453	/* this is probably cleaner? but also slower! */
		454	/* in practise, it seems to be less stable */
393	CV *cp = Perl_cv_clone (cv);	455	CV *cp = Perl_cv_clone (cv);
394	CvPADLIST (cv) = CvPADLIST (cp);	456	CvPADLIST (cv) = CvPADLIST (cp);
395	CvPADLIST (cp) = 0;	457	CvPADLIST (cp) = 0;
396	SvREFCNT_dec (cp);	458	SvREFCNT_dec (cp);
397	#else	459	#else
…		…
401	}	463	}
402		464
403	static void	465	static void
404	put_padlist (pTHX_ CV *cv)	466	put_padlist (pTHX_ CV *cv)
405	{	467	{
406	MAGIC *mg = CORO_MAGIC (cv);	468	MAGIC *mg = CORO_MAGIC_cv (cv);
407	AV *av;	469	AV *av;
408		470
409	if (expect_false (!mg))	471	if (expect_false (!mg))
410	{	472	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
411	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
412	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
413	mg->mg_virtual = &vtbl_coro;
414	mg->mg_obj = (SV *)newAV ();
415	}
416		473
417	av = (AV *)mg->mg_obj;	474	av = (AV *)mg->mg_obj;
418		475
419	if (expect_false (AvFILLp (av) >= AvMAX (av)))	476	if (expect_false (AvFILLp (av) >= AvMAX (av)))
420	av_extend (av, AvMAX (av) + 1);	477	av_extend (av, AvMAX (av) + 1);
…		…
486		543
487	if (expect_true (CvDEPTH (cv)))	544	if (expect_true (CvDEPTH (cv)))
488	{	545	{
489	EXTEND (SP, 3);	546	EXTEND (SP, 3);
490	PUSHs ((SV *)CvPADLIST (cv));	547	PUSHs ((SV *)CvPADLIST (cv));
491	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	548	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
492	PUSHs ((SV *)cv);	549	PUSHs ((SV *)cv);
493		550
494	CvDEPTH (cv) = 0;	551	CvDEPTH (cv) = 0;
495	get_padlist (aTHX_ cv);	552	get_padlist (aTHX_ cv);
496	}	553	}
…		…
507		564
508	PUTBACK;	565	PUTBACK;
509	}	566	}
510		567
511	/* allocate some space on the context stack for our purposes */	568	/* allocate some space on the context stack for our purposes */
		569	/* we manually unroll here, as usually 2 slots is enough */
		570	if (SLOT_COUNT >= 1) CXINC;
		571	if (SLOT_COUNT >= 2) CXINC;
		572	if (SLOT_COUNT >= 3) CXINC;
512	{	573	{
513	/* we manually unroll here, as usually 2 slots is enough */
514	int i;	574	int i;
515	if (SLOT_COUNT >= 1) CXINC;
516	if (SLOT_COUNT >= 2) CXINC;
517	if (SLOT_COUNT >= 3) CXINC;
518	for (i = 3; i < SLOT_COUNT; ++i)	575	for (i = 3; i < SLOT_COUNT; ++i)
519	CXINC;	576	CXINC;
520
521	cxstack_ix -= SLOT_COUNT; /* undo allocation */
522	}	577	}
		578	cxstack_ix -= SLOT_COUNT; /* undo allocation */
523		579
524	c->mainstack = PL_mainstack;	580	c->mainstack = PL_mainstack;
525		581
526	{	582	{
527	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	583	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
…		…
577		633
578	New(54,PL_savestack,24,ANY);	634	New(54,PL_savestack,24,ANY);
579	PL_savestack_ix = 0;	635	PL_savestack_ix = 0;
580	PL_savestack_max = 24;	636	PL_savestack_max = 24;
581		637
582	#if !PERL_VERSION_ATLEAST (5,9,0)	638	#if !PERL_VERSION_ATLEAST (5,10,0)
583	New(54,PL_retstack,4,OP*);	639	New(54,PL_retstack,4,OP*);
584	PL_retstack_ix = 0;	640	PL_retstack_ix = 0;
585	PL_retstack_max = 4;	641	PL_retstack_max = 4;
586	#endif	642	#endif
587	}	643	}
…		…
589		645
590	/*	646	/*
591	* destroy the stacks, the callchain etc...	647	* destroy the stacks, the callchain etc...
592	*/	648	*/
593	static void	649	static void
594	coro_destroy_stacks (pTHX)	650	coro_destruct_stacks (pTHX)
595	{	651	{
596	while (PL_curstackinfo->si_next)	652	while (PL_curstackinfo->si_next)
597	PL_curstackinfo = PL_curstackinfo->si_next;	653	PL_curstackinfo = PL_curstackinfo->si_next;
598		654
599	while (PL_curstackinfo)	655	while (PL_curstackinfo)
…		…
610		666
611	Safefree (PL_tmps_stack);	667	Safefree (PL_tmps_stack);
612	Safefree (PL_markstack);	668	Safefree (PL_markstack);
613	Safefree (PL_scopestack);	669	Safefree (PL_scopestack);
614	Safefree (PL_savestack);	670	Safefree (PL_savestack);
615	#if !PERL_VERSION_ATLEAST (5,9,0)	671	#if !PERL_VERSION_ATLEAST (5,10,0)
616	Safefree (PL_retstack);	672	Safefree (PL_retstack);
617	#endif	673	#endif
618	}	674	}
619		675
620	static size_t	676	static size_t
…		…
636	#undef VAR	692	#undef VAR
637	}	693	}
638	else	694	else
639	slot = coro->slot;	695	slot = coro->slot;
640		696
		697	if (slot)
		698	{
641	rss += sizeof (slot->curstackinfo);	699	rss += sizeof (slot->curstackinfo);
642	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	700	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
643	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 *);
644	rss += slot->tmps_max * sizeof (SV *);	702	rss += slot->tmps_max * sizeof (SV *);
645	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);	703	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
646	rss += slot->scopestack_max * sizeof (I32);	704	rss += slot->scopestack_max * sizeof (I32);
647	rss += slot->savestack_max * sizeof (ANY);	705	rss += slot->savestack_max * sizeof (ANY);
648		706
649	#if !PERL_VERSION_ATLEAST (5,9,0)	707	#if !PERL_VERSION_ATLEAST (5,10,0)
650	rss += slot->retstack_max * sizeof (OP *);	708	rss += slot->retstack_max * sizeof (OP *);
651	#endif	709	#endif
		710	}
652	}	711	}
653		712
654	return rss;	713	return rss;
655	}	714	}
656		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 somtimes 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
657	/** 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	}
658		834
659	static void	835	static void
660	coro_setup (pTHX_ struct coro *coro)	836	coro_setup (pTHX_ struct coro *coro)
661	{	837	{
662	/*	838	/*
…		…
671	PL_curpm = 0;	847	PL_curpm = 0;
672	PL_curpad = 0;	848	PL_curpad = 0;
673	PL_localizing = 0;	849	PL_localizing = 0;
674	PL_dirty = 0;	850	PL_dirty = 0;
675	PL_restartop = 0;	851	PL_restartop = 0;
676	PL_diehook = SvREFCNT_inc (sv_diehook);	852	#if PERL_VERSION_ATLEAST (5,10,0)
677	PL_warnhook = SvREFCNT_inc (sv_warnhook);	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);
678		859
679	GvSV (PL_defgv) = newSV (0);	860	GvSV (PL_defgv) = newSV (0);
680	GvAV (PL_defgv) = coro->args; coro->args = 0;	861	GvAV (PL_defgv) = coro->args; coro->args = 0;
681	GvSV (PL_errgv) = newSV (0);	862	GvSV (PL_errgv) = newSV (0);
682	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);
683	PL_rs = newSVsv (GvSV (irsgv));	864	PL_rs = newSVsv (GvSV (irsgv));
684	PL_defoutgv = (GV *)SvREFCNT_inc (stdoutgv);	865	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
685		866
686	{	867	{
687	dSP;	868	dSP;
688	LOGOP myop;	869	UNOP myop;
689		870
690	Zero (&myop, 1, LOGOP);	871	Zero (&myop, 1, UNOP);
691	myop.op_next = Nullop;	872	myop.op_next = Nullop;
692	myop.op_flags = OPf_WANT_VOID;	873	myop.op_flags = OPf_WANT_VOID;
693		874
694	PUSHMARK (SP);	875	PUSHMARK (SP);
695	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));	876	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
…		…
697	PL_op = (OP *)&myop;	878	PL_op = (OP *)&myop;
698	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	879	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
699	SPAGAIN;	880	SPAGAIN;
700	}	881	}
701		882
702	ENTER; /* necessary e.g. for dounwind and to balance the xsub-entersub */	883	/* this newly created coroutine might be run on an existing cctx which most
		884	* likely was suspended in set_stacklevel, called from pp_set_stacklevel,
		885	* so we have to emulate entering pp_set_stacklevel here.
		886	*/
		887	SSL_HEAD;
703	}	888	}
704		889
705	static void	890	static void
706	coro_destroy (pTHX_ struct coro *coro)	891	coro_destruct (pTHX_ struct coro *coro)
707	{	892	{
708	if (!IN_DESTRUCT)	893	if (!IN_DESTRUCT)
709	{	894	{
710	/* restore all saved variables and stuff */	895	/* restore all saved variables and stuff */
711	LEAVE_SCOPE (0);	896	LEAVE_SCOPE (0);
…		…
733	SvREFCNT_dec (PL_warnhook);	918	SvREFCNT_dec (PL_warnhook);
734		919
735	SvREFCNT_dec (coro->saved_deffh);	920	SvREFCNT_dec (coro->saved_deffh);
736	SvREFCNT_dec (coro->throw);	921	SvREFCNT_dec (coro->throw);
737		922
738	coro_destroy_stacks (aTHX);	923	coro_destruct_stacks (aTHX);
739	}	924	}
740		925
741	static void	926	INLINE void
742	free_coro_mortal (pTHX)	927	free_coro_mortal (pTHX)
743	{	928	{
744	if (expect_true (coro_mortal))	929	if (expect_true (coro_mortal))
745	{	930	{
746	SvREFCNT_dec (coro_mortal);	931	SvREFCNT_dec (coro_mortal);
…		…
780	: cx->blk_gimme == G_SCALAR ? bot + 1	965	: cx->blk_gimme == G_SCALAR ? bot + 1
781	: bot;	966	: bot;
782		967
783	av_extend (av, top - bot);	968	av_extend (av, top - bot);
784	while (bot < top)	969	while (bot < top)
785	av_push (av, SvREFCNT_inc (*bot++));	970	av_push (av, SvREFCNT_inc_NN (*bot++));
786		971
787	PL_runops = RUNOPS_DEFAULT;	972	PL_runops = RUNOPS_DEFAULT;
788	ENTER;	973	ENTER;
789	SAVETMPS;	974	SAVETMPS;
790	EXTEND (SP, 3);	975	EXTEND (SP, 3);
…		…
828	SAVETMPS;	1013	SAVETMPS;
829	EXTEND (SP, 3);	1014	EXTEND (SP, 3);
830	PUSHMARK (SP);	1015	PUSHMARK (SP);
831	PUSHs (&PL_sv_yes);	1016	PUSHs (&PL_sv_yes);
832	PUSHs (fullname);	1017	PUSHs (fullname);
833	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);
834	PUTBACK;	1019	PUTBACK;
835	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	1020	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
836	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);
837	SPAGAIN;	1022	SPAGAIN;
838	FREETMPS;	1023	FREETMPS;
…		…
870		1055
871	TAINT_NOT;	1056	TAINT_NOT;
872	return 0;	1057	return 0;
873	}	1058	}
874		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
875	/* 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 */
876	/* _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 */
877	/* during execution of a perl program */	1069	/* during execution of a perl program */
		1070	/* also initialises PL_top_env */
878	static void NOINLINE	1071	static void NOINLINE
879	prepare_cctx (pTHX_ coro_cctx *cctx)	1072	cctx_prepare (pTHX_ coro_cctx *cctx)
880	{	1073	{
881	dSP;	1074	dSP;
882	LOGOP myop;	1075	UNOP myop;
883		1076
884	PL_top_env = &PL_start_env;	1077	PL_top_env = &PL_start_env;
885		1078
886	if (cctx->flags & CC_TRACE)	1079	if (cctx->flags & CC_TRACE)
887	PL_runops = runops_trace;	1080	PL_runops = runops_trace;
888		1081
889	Zero (&myop, 1, LOGOP);	1082	Zero (&myop, 1, UNOP);
890	myop.op_next = PL_op;	1083	myop.op_next = PL_op;
891	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1084	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
892		1085
893	PUSHMARK (SP);	1086	PUSHMARK (SP);
894	EXTEND (SP, 2);	1087	EXTEND (SP, 2);
895	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1088	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
896	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1089	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
897	PUTBACK;	1090	PUTBACK;
898	PL_op = (OP *)&myop;	1091	PL_op = (OP *)&myop;
899	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1092	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
900	SPAGAIN;	1093	SPAGAIN;
901	}	1094	}
902		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
903	/*	1117	/*
904	* this is a _very_ stripped down perl interpreter ;)	1118	* this is a _very_ stripped down perl interpreter ;)
905	*/	1119	*/
906	static void	1120	static void
907	coro_run (void *arg)	1121	cctx_run (void *arg)
908	{	1122	{
		1123	#ifdef USE_ITHREADS
		1124	# if CORO_PTHREAD
		1125	PERL_SET_CONTEXT (coro_thx);
		1126	# endif
		1127	#endif
		1128	{
909	dTHX;	1129	dTHX;
910		1130
911	/* coro_run is the alternative tail of transfer(), so unlock here. */	1131	/* we are the alternative tail to pp_set_stacklevel */
912	UNLOCK;	1132	/* so do the same things here */
		1133	SSL_TAIL;
913		1134
914	/* we now skip the entersub that lead to transfer() */	1135	/* we now skip the op that did lead to transfer() */
915	PL_op = PL_op->op_next;	1136	PL_op = PL_op->op_next;
916		1137
917	/* inject a fake subroutine call to cctx_init */	1138	/* inject a fake subroutine call to cctx_init */
918	prepare_cctx (aTHX_ (coro_cctx *)arg);	1139	cctx_prepare (aTHX_ (coro_cctx *)arg);
919		1140
		1141	/* cctx_run is the alternative tail of transfer() */
		1142	transfer_tail (aTHX);
		1143
920	/* 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 */
921	PL_restartop = PL_op;	1145	PL_restartop = PL_op;
922	perl_run (PL_curinterp);	1146	perl_run (PL_curinterp);
923		1147
924	/*	1148	/*
925	* 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
926	* 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)
927	* 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
928	* bootstrap-time "top" top_env, as we cannot restore the "main"	1152	* bootstrap-time "top" top_env, as we cannot restore the "main"
929	* coroutine as Coro has no such concept	1153	* coroutine as Coro has no such concept
930	*/	1154	*/
931	PL_top_env = main_top_env;	1155	PL_top_env = main_top_env;
932	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	}
933	}	1158	}
934		1159
935	static coro_cctx *	1160	static coro_cctx *
936	cctx_new ()	1161	cctx_new ()
937	{	1162	{
938	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 ();
939	void *stack_start;	1192	void *stack_start;
940	size_t stack_size;	1193	size_t stack_size;
941		1194
942	++cctx_count;
943
944	Newz (0, cctx, 1, coro_cctx);
945
946	#if HAVE_MMAP	1195	#if HAVE_MMAP
947
948	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;
949	/* mmap supposedly does allocate-on-write for us */	1197	/* mmap supposedly does allocate-on-write for us */
950	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);
951		1199
952	if (cctx->sptr != (void *)-1)	1200	if (cctx->sptr != (void *)-1)
953	{	1201	{
954	# if CORO_STACKGUARD	1202	#if CORO_STACKGUARD
955	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);	1203	mprotect (cctx->sptr, CORO_STACKGUARD * PAGESIZE, PROT_NONE);
956	# endif	1204	#endif
957	stack_start = CORO_STACKGUARD * PAGESIZE + (char *)cctx->sptr;	1205	stack_start = (char *)cctx->sptr + CORO_STACKGUARD * PAGESIZE;
958	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;	1206	stack_size = cctx->ssize - CORO_STACKGUARD * PAGESIZE;
959	cctx->flags |= CC_MAPPED;	1207	cctx->flags |= CC_MAPPED;
960	}	1208	}
961	else	1209	else
962	#endif	1210	#endif
963	{	1211	{
964	cctx->ssize = coro_stacksize * (long)sizeof (long);	1212	cctx->ssize = cctx_stacksize * (long)sizeof (long);
965	New (0, cctx->sptr, coro_stacksize, long);	1213	New (0, cctx->sptr, cctx_stacksize, long);
966		1214
967	if (!cctx->sptr)	1215	if (!cctx->sptr)
968	{	1216	{
969	perror ("FATAL: unable to allocate stack for coroutine");	1217	perror ("FATAL: unable to allocate stack for coroutine, exiting.");
970	_exit (EXIT_FAILURE);	1218	_exit (EXIT_FAILURE);
971	}	1219	}
972		1220
973	stack_start = cctx->sptr;	1221	stack_start = cctx->sptr;
974	stack_size = cctx->ssize;	1222	stack_size = cctx->ssize;
975	}	1223	}
976		1224
977	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
978	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1229	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
979		1230
980	return cctx;	1231	return cctx;
981	}	1232	}
982		1233
983	static void	1234	static void
…		…
985	{	1236	{
986	if (!cctx)	1237	if (!cctx)
987	return;	1238	return;
988		1239
989	--cctx_count;	1240	--cctx_count;
		1241	coro_destroy (&cctx->cctx);
990		1242
		1243	/* coro_transfer creates new, empty cctx's */
		1244	if (cctx->sptr)
		1245	{
991	#if CORO_USE_VALGRIND	1246	#if CORO_USE_VALGRIND
992	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1247	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
993	#endif	1248	#endif
994		1249
995	#if HAVE_MMAP	1250	#if HAVE_MMAP
996	if (cctx->flags & CC_MAPPED)	1251	if (cctx->flags & CC_MAPPED)
997	munmap (cctx->sptr, cctx->ssize);	1252	munmap (cctx->sptr, cctx->ssize);
998	else	1253	else
999	#endif	1254	#endif
1000	Safefree (cctx->sptr);	1255	Safefree (cctx->sptr);
		1256	}
1001		1257
1002	Safefree (cctx);	1258	Safefree (cctx);
1003	}	1259	}
1004		1260
1005	/* wether this cctx should be destructed */	1261	/* wether this cctx should be destructed */
1006	#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))
1007		1263
1008	static coro_cctx *	1264	static coro_cctx *
1009	cctx_get (pTHX)	1265	cctx_get (pTHX)
1010	{	1266	{
1011	while (expect_true (cctx_first))	1267	while (expect_true (cctx_first))
…		…
1018	return cctx;	1274	return cctx;
1019		1275
1020	cctx_destroy (cctx);	1276	cctx_destroy (cctx);
1021	}	1277	}
1022		1278
1023	return cctx_new ();	1279	return cctx_new_run ();
1024	}	1280	}
1025		1281
1026	static void	1282	static void
1027	cctx_put (coro_cctx *cctx)	1283	cctx_put (coro_cctx *cctx)
1028	{	1284	{
		1285	assert (("FATAL: cctx_put called on non-initialised cctx in Coro (please report)", cctx->sptr));
		1286
1029	/* free another cctx if overlimit */	1287	/* free another cctx if overlimit */
1030	if (expect_false (cctx_idle >= MAX_IDLE_CCTX))	1288	if (expect_false (cctx_idle >= cctx_max_idle))
1031	{	1289	{
1032	coro_cctx *first = cctx_first;	1290	coro_cctx *first = cctx_first;
1033	cctx_first = first->next;	1291	cctx_first = first->next;
1034	--cctx_idle;	1292	--cctx_idle;
1035		1293
…		…
1055	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");
1056		1314
1057	if (expect_false (next->flags & CF_DESTROYED))	1315	if (expect_false (next->flags & CF_DESTROYED))
1058	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");
1059		1317
1060	if (
1061	#if PERL_VERSION_ATLEAST (5,9,0)	1318	#if !PERL_VERSION_ATLEAST (5,10,0)
1062	expect_false (PL_parser)
1063	#else
1064	expect_false (PL_lex_state != LEX_NOTPARSING)	1319	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1065	#endif
1066	)
1067	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
1068	}	1322	}
1069	}	1323	}
1070		1324
1071	/* always use the TRANSFER macro */	1325	/* always use the TRANSFER macro */
1072	static void NOINLINE	1326	static void NOINLINE
1073	transfer (pTHX_ struct coro *prev, struct coro *next)	1327	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1074	{	1328	{
1075	dSTACKLEVEL;	1329	dSTACKLEVEL;
1076		1330
1077	/* sometimes transfer is only called to set idle_sp */	1331	/* sometimes transfer is only called to set idle_sp */
1078	if (expect_false (!next))	1332	if (expect_false (!next))
…		…
1084	{	1338	{
1085	coro_cctx *prev__cctx;	1339	coro_cctx *prev__cctx;
1086		1340
1087	if (expect_false (prev->flags & CF_NEW))	1341	if (expect_false (prev->flags & CF_NEW))
1088	{	1342	{
1089	/* create a new empty context */	1343	/* create a new empty/source context */
1090	Newz (0, prev->cctx, 1, coro_cctx);	1344	prev->cctx = cctx_new_empty ();
1091	prev->flags &= ~CF_NEW;	1345	prev->flags &= ~CF_NEW;
1092	prev->flags |= CF_RUNNING;	1346	prev->flags |= CF_RUNNING;
1093	}	1347	}
1094		1348
1095	prev->flags &= ~CF_RUNNING;	1349	prev->flags &= ~CF_RUNNING;
1096	next->flags |= CF_RUNNING;	1350	next->flags |= CF_RUNNING;
1097		1351
1098	LOCK;	1352	LOCK;
		1353
		1354	/* first get rid of the old state */
		1355	save_perl (aTHX_ prev);
1099		1356
1100	if (expect_false (next->flags & CF_NEW))	1357	if (expect_false (next->flags & CF_NEW))
1101	{	1358	{
1102	/* need to start coroutine */	1359	/* need to start coroutine */
1103	next->flags &= ~CF_NEW;	1360	next->flags &= ~CF_NEW;
1104	/* first get rid of the old state */
1105	save_perl (aTHX_ prev);
1106	/* setup coroutine call */	1361	/* setup coroutine call */
1107	coro_setup (aTHX_ next);	1362	coro_setup (aTHX_ next);
1108	}	1363	}
1109	else	1364	else
1110	{
1111	/* coroutine already started */
1112	save_perl (aTHX_ prev);
1113	load_perl (aTHX_ next);	1365	load_perl (aTHX_ next);
1114	}
1115		1366
1116	prev__cctx = prev->cctx;	1367	prev__cctx = prev->cctx;
1117		1368
1118	/* possibly "free" the cctx */	1369	/* possibly untie and reuse the cctx */
1119	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	))
1120	{	1375	{
1121	/* 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 */
1122	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));
1123		1378
1124	prev->cctx = 0;	1379	prev->cctx = 0;
1125		1380
1126	/* 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 */
1127	/* 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 */
1128	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1383	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1384	if (!next->cctx)
1129	next->cctx = cctx_get (aTHX);	1385	next->cctx = cctx_get (aTHX);
1130		1386
1131	cctx_put (prev__cctx);	1387	cctx_put (prev__cctx);
1132	}	1388	}
1133		1389
1134	++next->usecount;	1390	++next->usecount;
1135		1391
1136	if (expect_true (!next->cctx))	1392	if (expect_true (!next->cctx))
1137	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;
1138		1397
1139	if (expect_false (prev__cctx != next->cctx))	1398	if (expect_false (prev__cctx != next->cctx))
1140	{	1399	{
1141	prev__cctx->top_env = PL_top_env;	1400	prev__cctx->top_env = PL_top_env;
1142	PL_top_env = next->cctx->top_env;	1401	PL_top_env = next->cctx->top_env;
1143	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1402	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1144	}	1403	}
1145		1404
1146	free_coro_mortal (aTHX);	1405	transfer_tail (aTHX);
1147	UNLOCK;
1148
1149	if (expect_false (prev->throw || next->throw))
1150	{
1151	struct coro *coro = SvSTATE (coro_current);
1152
1153	if (coro->throw)
1154	{
1155	SV *exception = coro->throw;
1156	coro->throw = 0;
1157	sv_setsv (ERRSV, exception);
1158	croak (0);
1159	}
1160	}
1161	}	1406	}
1162	}	1407	}
1163		1408
1164	struct transfer_args
1165	{
1166	struct coro *prev, *next;
1167	};
1168
1169	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1409	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1170	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1410	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1171		1411
1172	/** high level stuff ********************************************************/	1412	/** high level stuff ********************************************************/
1173		1413
1174	static int	1414	static int
…		…
1198	croak ("FATAL: tried to destroy currently running coroutine");	1438	croak ("FATAL: tried to destroy currently running coroutine");
1199		1439
1200	save_perl (aTHX_ &temp);	1440	save_perl (aTHX_ &temp);
1201	load_perl (aTHX_ coro);	1441	load_perl (aTHX_ coro);
1202		1442
1203	coro_destroy (aTHX_ coro);	1443	coro_destruct (aTHX_ coro);
1204		1444
1205	load_perl (aTHX_ &temp);	1445	load_perl (aTHX_ &temp);
1206		1446
1207	coro->slot = 0;	1447	coro->slot = 0;
1208	}	1448	}
…		…
1268	{	1508	{
1269	dTHX;	1509	dTHX;
1270	struct transfer_args ta;	1510	struct transfer_args ta;
1271		1511
1272	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1512	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1273	TRANSFER (ta);	1513	TRANSFER (ta, 1);
1274	}	1514	}
1275		1515
1276	/** Coro ********************************************************************/	1516	/** Coro ********************************************************************/
1277		1517
1278	static void	1518	static void
…		…
1280	{	1520	{
1281	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);
1282	}	1522	}
1283		1523
1284	static SV *	1524	static SV *
1285	coro_deq (pTHX_ int min_prio)	1525	coro_deq (pTHX)
1286	{	1526	{
1287	int prio = PRIO_MAX - PRIO_MIN;	1527	int prio;
1288		1528
1289	min_prio -= PRIO_MIN;
1290	if (min_prio < 0)
1291	min_prio = 0;
1292
1293	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1529	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1294	if (AvFILLp (coro_ready [prio]) >= 0)	1530	if (AvFILLp (coro_ready [prio]) >= 0)
1295	return av_shift (coro_ready [prio]);	1531	return av_shift (coro_ready [prio]);
1296		1532
1297	return 0;	1533	return 0;
1298	}	1534	}
…		…
1300	static int	1536	static int
1301	api_ready (SV *coro_sv)	1537	api_ready (SV *coro_sv)
1302	{	1538	{
1303	dTHX;	1539	dTHX;
1304	struct coro *coro;	1540	struct coro *coro;
		1541	SV *sv_hook;
		1542	void (*xs_hook)(void);
1305		1543
1306	if (SvROK (coro_sv))	1544	if (SvROK (coro_sv))
1307	coro_sv = SvRV (coro_sv);	1545	coro_sv = SvRV (coro_sv);
1308		1546
1309	coro = SvSTATE (coro_sv);	1547	coro = SvSTATE (coro_sv);
…		…
1312	return 0;	1550	return 0;
1313		1551
1314	coro->flags |= CF_READY;	1552	coro->flags |= CF_READY;
1315		1553
1316	LOCK;	1554	LOCK;
		1555
		1556	sv_hook = coro_nready ? 0 : coro_readyhook;
		1557	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1558
1317	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1559	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1318	++coro_nready;	1560	++coro_nready;
		1561
1319	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 ();
1320		1582
1321	return 1;	1583	return 1;
1322	}	1584	}
1323		1585
1324	static int	1586	static int
1325	api_is_ready (SV *coro_sv)	1587	api_is_ready (SV *coro_sv)
1326	{	1588	{
1327	dTHX;	1589	dTHX;
		1590
1328	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1591	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1329	}	1592	}
1330		1593
1331	static void	1594	INLINE void
1332	prepare_schedule (pTHX_ struct transfer_args *ta)	1595	prepare_schedule (pTHX_ struct transfer_args *ta)
1333	{	1596	{
1334	SV *prev_sv, *next_sv;	1597	SV *prev_sv, *next_sv;
1335		1598
1336	for (;;)	1599	for (;;)
1337	{	1600	{
1338	LOCK;	1601	LOCK;
1339	next_sv = coro_deq (aTHX_ PRIO_MIN);	1602	next_sv = coro_deq (aTHX);
1340		1603
1341	/* nothing to schedule: call the idle handler */	1604	/* nothing to schedule: call the idle handler */
1342	if (expect_false (!next_sv))	1605	if (expect_false (!next_sv))
1343	{	1606	{
1344	dSP;	1607	dSP;
…		…
1348	SAVETMPS;	1611	SAVETMPS;
1349		1612
1350	PUSHMARK (SP);	1613	PUSHMARK (SP);
1351	PUTBACK;	1614	PUTBACK;
1352	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1615	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1616	SPAGAIN;
1353		1617
1354	FREETMPS;	1618	FREETMPS;
1355	LEAVE;	1619	LEAVE;
1356	continue;	1620	continue;
1357	}	1621	}
…		…
1361	/* cannot transfer to destroyed coros, skip and look for next */	1625	/* cannot transfer to destroyed coros, skip and look for next */
1362	if (expect_false (ta->next->flags & CF_DESTROYED))	1626	if (expect_false (ta->next->flags & CF_DESTROYED))
1363	{	1627	{
1364	UNLOCK;	1628	UNLOCK;
1365	SvREFCNT_dec (next_sv);	1629	SvREFCNT_dec (next_sv);
1366	/* coro_nready is already taken care of by destroy */	1630	/* coro_nready has already been taken care of by destroy */
1367	continue;	1631	continue;
1368	}	1632	}
1369		1633
1370	--coro_nready;	1634	--coro_nready;
1371	UNLOCK;	1635	UNLOCK;
…		…
1374		1638
1375	/* free this only after the transfer */	1639	/* free this only after the transfer */
1376	prev_sv = SvRV (coro_current);	1640	prev_sv = SvRV (coro_current);
1377	ta->prev = SvSTATE (prev_sv);	1641	ta->prev = SvSTATE (prev_sv);
1378	TRANSFER_CHECK (*ta);	1642	TRANSFER_CHECK (*ta);
1379	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));
1380	ta->next->flags &= ~CF_READY;	1644	ta->next->flags &= ~CF_READY;
1381	SvRV_set (coro_current, next_sv);	1645	SvRV_set (coro_current, next_sv);
1382		1646
1383	LOCK;	1647	LOCK;
1384	free_coro_mortal (aTHX);	1648	free_coro_mortal (aTHX);
1385	coro_mortal = prev_sv;	1649	coro_mortal = prev_sv;
1386	UNLOCK;	1650	UNLOCK;
1387	}	1651	}
1388		1652
1389	static void	1653	INLINE void
1390	prepare_cede (pTHX_ struct transfer_args *ta)	1654	prepare_cede (pTHX_ struct transfer_args *ta)
1391	{	1655	{
1392	api_ready (coro_current);	1656	api_ready (coro_current);
1393	prepare_schedule (aTHX_ ta);	1657	prepare_schedule (aTHX_ ta);
1394	}	1658	}
…		…
1412	{	1676	{
1413	dTHX;	1677	dTHX;
1414	struct transfer_args ta;	1678	struct transfer_args ta;
1415		1679
1416	prepare_schedule (aTHX_ &ta);	1680	prepare_schedule (aTHX_ &ta);
1417	TRANSFER (ta);	1681	TRANSFER (ta, 1);
1418	}	1682	}
1419		1683
1420	static int	1684	static int
1421	api_cede (void)	1685	api_cede (void)
1422	{	1686	{
…		…
1425		1689
1426	prepare_cede (aTHX_ &ta);	1690	prepare_cede (aTHX_ &ta);
1427		1691
1428	if (expect_true (ta.prev != ta.next))	1692	if (expect_true (ta.prev != ta.next))
1429	{	1693	{
1430	TRANSFER (ta);	1694	TRANSFER (ta, 1);
1431	return 1;	1695	return 1;
1432	}	1696	}
1433	else	1697	else
1434	return 0;	1698	return 0;
1435	}	1699	}
…		…
1440	dTHX;	1704	dTHX;
1441	struct transfer_args ta;	1705	struct transfer_args ta;
1442		1706
1443	if (prepare_cede_notself (aTHX_ &ta))	1707	if (prepare_cede_notself (aTHX_ &ta))
1444	{	1708	{
1445	TRANSFER (ta);	1709	TRANSFER (ta, 1);
1446	return 1;	1710	return 1;
1447	}	1711	}
1448	else	1712	else
1449	return 0;	1713	return 0;
1450	}	1714	}
…		…
1456	struct coro *coro = SvSTATE (coro_sv);	1720	struct coro *coro = SvSTATE (coro_sv);
1457		1721
1458	if (flags & CC_TRACE)	1722	if (flags & CC_TRACE)
1459	{	1723	{
1460	if (!coro->cctx)	1724	if (!coro->cctx)
1461	coro->cctx = cctx_new ();	1725	coro->cctx = cctx_new_run ();
1462	else if (!(coro->cctx->flags & CC_TRACE))	1726	else if (!(coro->cctx->flags & CC_TRACE))
1463	croak ("cannot enable tracing on coroutine with custom stack");	1727	croak ("cannot enable tracing on coroutine with custom stack");
1464		1728
1465	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1729	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1466	}	1730	}
…		…
1473	else	1737	else
1474	coro->slot->runops = RUNOPS_DEFAULT;	1738	coro->slot->runops = RUNOPS_DEFAULT;
1475	}	1739	}
1476	}	1740	}
1477		1741
		1742	#if 0
		1743	static int
		1744	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1745	{
		1746	AV *padlist;
		1747	AV *av = (AV *)mg->mg_obj;
		1748
		1749	abort ();
		1750
		1751	return 0;
		1752	}
		1753
		1754	static MGVTBL coro_gensub_vtbl = {
		1755	0, 0, 0, 0,
		1756	coro_gensub_free
		1757	};
		1758	#endif
		1759
		1760	/*****************************************************************************/
		1761	/* PerlIO::cede */
		1762
		1763	typedef struct
		1764	{
		1765	PerlIOBuf base;
		1766	NV next, every;
		1767	} PerlIOCede;
		1768
		1769	static IV
		1770	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1771	{
		1772	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1773
		1774	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1775	self->next = nvtime () + self->every;
		1776
		1777	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1778	}
		1779
		1780	static SV *
		1781	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1782	{
		1783	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1784
		1785	return newSVnv (self->every);
		1786	}
		1787
		1788	static IV
		1789	PerlIOCede_flush (pTHX_ PerlIO *f)
		1790	{
		1791	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1792	double now = nvtime ();
		1793
		1794	if (now >= self->next)
		1795	{
		1796	api_cede ();
		1797	self->next = now + self->every;
		1798	}
		1799
		1800	return PerlIOBuf_flush (aTHX_ f);
		1801	}
		1802
		1803	static PerlIO_funcs PerlIO_cede =
		1804	{
		1805	sizeof(PerlIO_funcs),
		1806	"cede",
		1807	sizeof(PerlIOCede),
		1808	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1809	PerlIOCede_pushed,
		1810	PerlIOBuf_popped,
		1811	PerlIOBuf_open,
		1812	PerlIOBase_binmode,
		1813	PerlIOCede_getarg,
		1814	PerlIOBase_fileno,
		1815	PerlIOBuf_dup,
		1816	PerlIOBuf_read,
		1817	PerlIOBuf_unread,
		1818	PerlIOBuf_write,
		1819	PerlIOBuf_seek,
		1820	PerlIOBuf_tell,
		1821	PerlIOBuf_close,
		1822	PerlIOCede_flush,
		1823	PerlIOBuf_fill,
		1824	PerlIOBase_eof,
		1825	PerlIOBase_error,
		1826	PerlIOBase_clearerr,
		1827	PerlIOBase_setlinebuf,
		1828	PerlIOBuf_get_base,
		1829	PerlIOBuf_bufsiz,
		1830	PerlIOBuf_get_ptr,
		1831	PerlIOBuf_get_cnt,
		1832	PerlIOBuf_set_ptrcnt,
		1833	};
		1834
		1835	/*****************************************************************************/
		1836
		1837	static const CV *ssl_cv; /* for quick consistency check */
		1838
		1839	static UNOP ssl_restore; /* restore stack as entersub did, for first-re-run */
		1840	static SV *ssl_arg0;
		1841	static SV *ssl_arg1;
		1842
		1843	/* this restores the stack in the case we patched the entersub, to */
		1844	/* recreate the stack frame as perl will on following calls */
		1845	/* since entersub cleared the stack */
		1846	static OP *
		1847	pp_restore (pTHX)
		1848	{
		1849	dSP;
		1850
		1851	PUSHMARK (SP);
		1852
		1853	EXTEND (SP, 3);
		1854	if (ssl_arg0) PUSHs (sv_2mortal (ssl_arg0)), ssl_arg0 = 0;
		1855	if (ssl_arg1) PUSHs (sv_2mortal (ssl_arg1)), ssl_arg1 = 0;
		1856	PUSHs ((SV *)CvGV (ssl_cv));
		1857
		1858	RETURNOP (ssl_restore.op_first);
		1859	}
		1860
		1861	/* declare prototype */
		1862	XS(XS_Coro__State__set_stacklevel);
		1863
		1864	#define OPpENTERSUB_SSL 15
		1865
		1866	static OP *
		1867	pp_set_stacklevel (pTHX)
		1868	{
		1869	dSP;
		1870	struct transfer_args ta;
		1871	SV **arg = PL_stack_base + TOPMARK + 1;
		1872	int items = SP - arg; /* args without function object */
		1873
		1874	/* do a quick consistency check on the "function" object, and if it isn't */
		1875	/* for us, divert to the real entersub */
		1876	if (SvTYPE (*sp) != SVt_PVGV || CvXSUB (GvCV (*sp)) != XS_Coro__State__set_stacklevel)
		1877	return PL_ppaddr[OP_ENTERSUB](aTHX);
		1878
		1879	/* pop args */
		1880	SP = PL_stack_base + POPMARK;
		1881
		1882	if (!(PL_op->op_flags & OPf_STACKED))
		1883	{
		1884	/* ampersand-form of call, use @_ instead of stack */
		1885	AV *av = GvAV (PL_defgv);
		1886	arg = AvARRAY (av);
		1887	items = AvFILLp (av) + 1;
		1888	}
		1889
		1890	PUTBACK;
		1891	switch (PL_op->op_private & OPpENTERSUB_SSL)
		1892	{
		1893	case 0:
		1894	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (arg [0]));
		1895	break;
		1896
		1897	case 1:
		1898	if (items != 2)
		1899	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d.", items);
		1900
		1901	prepare_transfer (aTHX_ &ta, arg [0], arg [1]);
		1902	break;
		1903
		1904	case 2:
		1905	prepare_schedule (aTHX_ &ta);
		1906	break;
		1907
		1908	case 3:
		1909	prepare_cede (aTHX_ &ta);
		1910	break;
		1911
		1912	case 4:
		1913	if (!prepare_cede_notself (aTHX_ &ta))
		1914	goto skip;
		1915
		1916	break;
		1917	}
		1918
		1919	TRANSFER (ta, 0);
		1920	SPAGAIN;
		1921
		1922	skip:
		1923	PUTBACK;
		1924	SSL_TAIL;
		1925	SPAGAIN;
		1926	RETURN;
		1927	}
		1928
1478	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1929	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1479		1930
1480	PROTOTYPES: DISABLE	1931	PROTOTYPES: DISABLE
1481
1482	BOOT:
1483	{
1484	#ifdef USE_ITHREADS
1485	MUTEX_INIT (&coro_mutex);
1486	#endif
1487	BOOT_PAGESIZE;
1488
1489	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
1490	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
1491
1492	sv_diehook = coro_get_sv ("Coro::State::DIEHOOK" , TRUE);
1493	sv_warnhook = coro_get_sv ("Coro::State::WARNHOOK", TRUE);
1494
1495	if (!PL_diehook) PL_diehook = SvREFCNT_inc (sv_diehook);
1496	if (!PL_warnhook) PL_warnhook = SvREFCNT_inc (sv_warnhook);
1497
1498	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1499
1500	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1501	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
1502	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
1503	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
1504
1505	main_mainstack = PL_mainstack;
1506	main_top_env = PL_top_env;
1507
1508	while (main_top_env->je_prev)
1509	main_top_env = main_top_env->je_prev;
1510
1511	coroapi.ver = CORO_API_VERSION;
1512	coroapi.transfer = api_transfer;
1513
1514	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1515	}
1516
1517	SV *
1518	new (char *klass, ...)
1519	CODE:
1520	{
1521	struct coro *coro;
1522	HV *hv;
1523	int i;
1524
1525	Newz (0, coro, 1, struct coro);
1526	coro->args = newAV ();
1527	coro->flags = CF_NEW;
1528
1529	if (coro_first) coro_first->prev = coro;
1530	coro->next = coro_first;
1531	coro_first = coro;
1532
1533	coro->hv = hv = newHV ();
1534	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;
1535	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1536
1537	av_extend (coro->args, items - 1);
1538	for (i = 1; i < items; i++)
1539	av_push (coro->args, newSVsv (ST (i)));
1540	}
1541	OUTPUT:
1542	RETVAL
1543		1932
1544	# these not obviously related functions are all rolled into the same xs	1933	# these not obviously related functions are all rolled into the same xs
1545	# function to increase chances that they all will call transfer with the same	1934	# function to increase chances that they all will call transfer with the same
1546	# stack offset	1935	# stack offset
1547	void	1936	void
…		…
1551	Coro::schedule = 2	1940	Coro::schedule = 2
1552	Coro::cede = 3	1941	Coro::cede = 3
1553	Coro::cede_notself = 4	1942	Coro::cede_notself = 4
1554	CODE:	1943	CODE:
1555	{	1944	{
1556	struct transfer_args ta;	1945	assert (("FATAL: ssl call recursion in Coro module (please report)", PL_op->op_ppaddr != pp_set_stacklevel));
1557		1946
1558	switch (ix)	1947	assert (("FATAL: ssl call with illegal CV value", CvGV (cv)));
		1948	ssl_cv = cv;
		1949
		1950	/* we patch the op, and then re-run the whole call */
		1951	/* we have to put some dummy argument on the stack for this to work */
		1952	ssl_restore.op_next = (OP *)&ssl_restore;
		1953	ssl_restore.op_type = OP_NULL;
		1954	ssl_restore.op_ppaddr = pp_restore;
		1955	ssl_restore.op_first = PL_op;
		1956
		1957	ssl_arg0 = items > 0 ? SvREFCNT_inc (ST (0)) : 0;
		1958	ssl_arg1 = items > 1 ? SvREFCNT_inc (ST (1)) : 0;
		1959
		1960	PL_op->op_ppaddr = pp_set_stacklevel;
		1961	PL_op->op_private = PL_op->op_private & ~OPpENTERSUB_SSL | ix; /* we potentially share our private flags with entersub */
		1962
		1963	PL_op = (OP *)&ssl_restore;
		1964	}
		1965
		1966	BOOT:
		1967	{
		1968	#ifdef USE_ITHREADS
		1969	MUTEX_INIT (&coro_lock);
		1970	# if CORO_PTHREAD
		1971	coro_thx = PERL_GET_CONTEXT;
		1972	# endif
		1973	#endif
		1974	BOOT_PAGESIZE;
		1975
		1976	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1977	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1978
		1979	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1980	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1981	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1982
		1983	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1984	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1985	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
		1986
		1987	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
		1988
		1989	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
		1990	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
		1991	newCONSTSUB (coro_state_stash, "CC_TRACE_LINE", newSViv (CC_TRACE_LINE));
		1992	newCONSTSUB (coro_state_stash, "CC_TRACE_ALL" , newSViv (CC_TRACE_ALL));
		1993
		1994	main_mainstack = PL_mainstack;
		1995	main_top_env = PL_top_env;
		1996
		1997	while (main_top_env->je_prev)
		1998	main_top_env = main_top_env->je_prev;
		1999
		2000	coroapi.ver = CORO_API_VERSION;
		2001	coroapi.rev = CORO_API_REVISION;
		2002	coroapi.transfer = api_transfer;
		2003
1559	{	2004	{
1560	case 0:	2005	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
1561	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));
1562	ta.next = 0;
1563	break;
1564		2006
1565	case 1:	2007	if (!svp) croak ("Time::HiRes is required");
1566	if (items != 2)	2008	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
1567	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);
1568		2009
1569	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	2010	nvtime = INT2PTR (double (*)(), SvIV (*svp));
1570	break;
1571
1572	case 2:
1573	prepare_schedule (aTHX_ &ta);
1574	break;
1575
1576	case 3:
1577	prepare_cede (aTHX_ &ta);
1578	break;
1579
1580	case 4:
1581	if (!prepare_cede_notself (aTHX_ &ta))
1582	XSRETURN_EMPTY;
1583
1584	break;
1585	}	2011	}
1586		2012
1587	BARRIER;	2013	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1588	TRANSFER (ta);
1589
1590	if (expect_false (GIMME_V != G_VOID && ta.next != ta.prev))
1591	XSRETURN_YES;
1592	}	2014	}
		2015
		2016	SV *
		2017	new (char *klass, ...)
		2018	CODE:
		2019	{
		2020	struct coro *coro;
		2021	MAGIC *mg;
		2022	HV *hv;
		2023	int i;
		2024
		2025	Newz (0, coro, 1, struct coro);
		2026	coro->args = newAV ();
		2027	coro->flags = CF_NEW;
		2028
		2029	if (coro_first) coro_first->prev = coro;
		2030	coro->next = coro_first;
		2031	coro_first = coro;
		2032
		2033	coro->hv = hv = newHV ();
		2034	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		2035	mg->mg_flags |= MGf_DUP;
		2036	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
		2037
		2038	av_extend (coro->args, items - 1);
		2039	for (i = 1; i < items; i++)
		2040	av_push (coro->args, newSVsv (ST (i)));
		2041	}
		2042	OUTPUT:
		2043	RETVAL
1593		2044
1594	bool	2045	bool
1595	_destroy (SV *coro_sv)	2046	_destroy (SV *coro_sv)
1596	CODE:	2047	CODE:
1597	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	2048	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1598	OUTPUT:	2049	OUTPUT:
1599	RETVAL	2050	RETVAL
1600		2051
1601	void	2052	void
1602	_exit (code)	2053	_exit (int code)
1603	int code
1604	PROTOTYPE: $	2054	PROTOTYPE: $
1605	CODE:	2055	CODE:
1606	_exit (code);	2056	_exit (code);
1607		2057
1608	int	2058	int
1609	cctx_stacksize (int new_stacksize = 0)	2059	cctx_stacksize (int new_stacksize = 0)
1610	CODE:	2060	CODE:
1611	RETVAL = coro_stacksize;	2061	RETVAL = cctx_stacksize;
1612	if (new_stacksize)	2062	if (new_stacksize)
		2063	{
1613	coro_stacksize = new_stacksize;	2064	cctx_stacksize = new_stacksize;
		2065	++cctx_gen;
		2066	}
		2067	OUTPUT:
		2068	RETVAL
		2069
		2070	int
		2071	cctx_max_idle (int max_idle = 0)
		2072	CODE:
		2073	RETVAL = cctx_max_idle;
		2074	if (max_idle > 1)
		2075	cctx_max_idle = max_idle;
1614	OUTPUT:	2076	OUTPUT:
1615	RETVAL	2077	RETVAL
1616		2078
1617	int	2079	int
1618	cctx_count ()	2080	cctx_count ()
…		…
1642	call (Coro::State coro, SV *coderef)	2104	call (Coro::State coro, SV *coderef)
1643	ALIAS:	2105	ALIAS:
1644	eval = 1	2106	eval = 1
1645	CODE:	2107	CODE:
1646	{	2108	{
1647	if (coro->mainstack)	2109	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1648	{	2110	{
1649	struct coro temp;	2111	struct coro temp;
1650		2112
1651	if (!(coro->flags & CF_RUNNING))	2113	if (!(coro->flags & CF_RUNNING))
1652	{	2114	{
		2115	PUTBACK;
1653	save_perl (aTHX_ &temp);	2116	save_perl (aTHX_ &temp);
1654	load_perl (aTHX_ coro);	2117	load_perl (aTHX_ coro);
1655	}	2118	}
1656		2119
1657	{	2120	{
1658	dSP;	2121	dSP;
1659	ENTER;	2122	ENTER;
1660	SAVETMPS;	2123	SAVETMPS;
		2124	PUTBACK;
		2125	PUSHSTACK;
1661	PUSHMARK (SP);	2126	PUSHMARK (SP);
1662	PUTBACK;
1663		2127
1664	if (ix)	2128	if (ix)
1665	eval_sv (coderef, 0);	2129	eval_sv (coderef, 0);
1666	else	2130	else
1667	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2131	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
1668		2132
		2133	POPSTACK;
1669	SPAGAIN;	2134	SPAGAIN;
1670	FREETMPS;	2135	FREETMPS;
1671	LEAVE;	2136	LEAVE;
1672	PUTBACK;	2137	PUTBACK;
1673	}	2138	}
1674		2139
1675	if (!(coro->flags & CF_RUNNING))	2140	if (!(coro->flags & CF_RUNNING))
1676	{	2141	{
1677	save_perl (aTHX_ coro);	2142	save_perl (aTHX_ coro);
1678	load_perl (aTHX_ &temp);	2143	load_perl (aTHX_ &temp);
		2144	SPAGAIN;
1679	}	2145	}
1680	}	2146	}
1681	}	2147	}
1682		2148
1683	SV *	2149	SV *
…		…
1692	RETVAL = boolSV (coro->flags & ix);	2158	RETVAL = boolSV (coro->flags & ix);
1693	OUTPUT:	2159	OUTPUT:
1694	RETVAL	2160	RETVAL
1695		2161
1696	void	2162	void
		2163	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2164	PROTOTYPE: $;$
		2165	CODE:
		2166	SvREFCNT_dec (self->throw);
		2167	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2168
		2169	void
1697	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2170	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1698		2171
1699	SV *	2172	SV *
1700	has_stack (Coro::State coro)	2173	has_cctx (Coro::State coro)
1701	PROTOTYPE: $	2174	PROTOTYPE: $
1702	CODE:	2175	CODE:
1703	RETVAL = boolSV (!!coro->cctx);	2176	RETVAL = boolSV (!!coro->cctx);
1704	OUTPUT:	2177	OUTPUT:
1705	RETVAL	2178	RETVAL
…		…
1710	CODE:	2183	CODE:
1711	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2184	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1712	OUTPUT:	2185	OUTPUT:
1713	RETVAL	2186	RETVAL
1714		2187
1715	IV	2188	UV
1716	rss (Coro::State coro)	2189	rss (Coro::State coro)
1717	PROTOTYPE: $	2190	PROTOTYPE: $
1718	ALIAS:	2191	ALIAS:
1719	usecount = 1	2192	usecount = 1
1720	CODE:	2193	CODE:
…		…
1724	case 1: RETVAL = coro->usecount; break;	2197	case 1: RETVAL = coro->usecount; break;
1725	}	2198	}
1726	OUTPUT:	2199	OUTPUT:
1727	RETVAL	2200	RETVAL
1728		2201
		2202	void
		2203	force_cctx ()
		2204	CODE:
		2205	struct coro *coro = SvSTATE (coro_current);
		2206	coro->cctx->idle_sp = 0;
		2207
		2208	void
		2209	swap_defsv (Coro::State self)
		2210	PROTOTYPE: $
		2211	ALIAS:
		2212	swap_defav = 1
		2213	CODE:
		2214	if (!self->slot)
		2215	croak ("cannot swap state with coroutine that has no saved state");
		2216	else
		2217	{
		2218	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2219	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2220
		2221	SV *tmp = *src; *src = *dst; *dst = tmp;
		2222	}
1729		2223
1730	MODULE = Coro::State PACKAGE = Coro	2224	MODULE = Coro::State PACKAGE = Coro
1731		2225
1732	BOOT:	2226	BOOT:
1733	{	2227	{
1734	int i;	2228	int i;
1735		2229
1736	sv_pool_rss = coro_get_sv ("Coro::POOL_RSS" , TRUE);
1737	sv_pool_size = coro_get_sv ("Coro::POOL_SIZE" , TRUE);
1738	av_async_pool = coro_get_av ("Coro::async_pool", TRUE);	2230	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2231	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2232	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1739		2233
1740	coro_current = coro_get_sv ("Coro::current", FALSE);	2234	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1741	SvREADONLY_on (coro_current);	2235	SvREADONLY_on (coro_current);
1742		2236
1743	coro_stash = gv_stashpv ("Coro", TRUE);	2237	coro_stash = gv_stashpv ("Coro", TRUE);
1744		2238
1745	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2239	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
…		…
1751		2245
1752	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2246	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1753	coro_ready[i] = newAV ();	2247	coro_ready[i] = newAV ();
1754		2248
1755	{	2249	{
1756	SV *sv = perl_get_sv ("Coro::API", TRUE);	2250	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
1757	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1758		2251
1759	coroapi.schedule = api_schedule;	2252	coroapi.schedule = api_schedule;
1760	coroapi.cede = api_cede;	2253	coroapi.cede = api_cede;
1761	coroapi.cede_notself = api_cede_notself;	2254	coroapi.cede_notself = api_cede_notself;
1762	coroapi.ready = api_ready;	2255	coroapi.ready = api_ready;
…		…
1773	void	2266	void
1774	_set_current (SV *current)	2267	_set_current (SV *current)
1775	PROTOTYPE: $	2268	PROTOTYPE: $
1776	CODE:	2269	CODE:
1777	SvREFCNT_dec (SvRV (coro_current));	2270	SvREFCNT_dec (SvRV (coro_current));
1778	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2271	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2272
		2273	void
		2274	_set_readyhook (SV *hook)
		2275	PROTOTYPE: $
		2276	CODE:
		2277	LOCK;
		2278	SvREFCNT_dec (coro_readyhook);
		2279	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2280	UNLOCK;
1779		2281
1780	int	2282	int
1781	prio (Coro::State coro, int newprio = 0)	2283	prio (Coro::State coro, int newprio = 0)
1782	ALIAS:	2284	ALIAS:
1783	nice = 1	2285	nice = 1
…		…
1813	CODE:	2315	CODE:
1814	RETVAL = coro_nready;	2316	RETVAL = coro_nready;
1815	OUTPUT:	2317	OUTPUT:
1816	RETVAL	2318	RETVAL
1817		2319
1818	void
1819	throw (Coro::State self, SV *throw = &PL_sv_undef)
1820	PROTOTYPE: $;$
1821	CODE:
1822	SvREFCNT_dec (self->throw);
1823	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
1824
1825	# for async_pool speedup	2320	# for async_pool speedup
1826	void	2321	void
1827	_pool_1 (SV *cb)	2322	_pool_1 (SV *cb)
1828	CODE:	2323	CODE:
1829	{	2324	{
…		…
1833	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2328	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1834	AV *invoke_av;	2329	AV *invoke_av;
1835	int i, len;	2330	int i, len;
1836		2331
1837	if (!invoke)	2332	if (!invoke)
		2333	{
		2334	SV *old = PL_diehook;
		2335	PL_diehook = 0;
		2336	SvREFCNT_dec (old);
1838	croak ("\3async_pool terminate\2\n");	2337	croak ("\3async_pool terminate\2\n");
		2338	}
1839		2339
1840	SvREFCNT_dec (coro->saved_deffh);	2340	SvREFCNT_dec (coro->saved_deffh);
1841	coro->saved_deffh = SvREFCNT_inc ((SV *)PL_defoutgv);	2341	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1842		2342
1843	hv_store (hv, "desc", sizeof ("desc") - 1,	2343	hv_store (hv, "desc", sizeof ("desc") - 1,
1844	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2344	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1845		2345
1846	invoke_av = (AV *)SvRV (invoke);	2346	invoke_av = (AV *)SvRV (invoke);
…		…
1850		2350
1851	if (len > 0)	2351	if (len > 0)
1852	{	2352	{
1853	av_fill (defav, len - 1);	2353	av_fill (defav, len - 1);
1854	for (i = 0; i < len; ++i)	2354	for (i = 0; i < len; ++i)
1855	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2355	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1856	}	2356	}
1857		2357
1858	SvREFCNT_dec (invoke);	2358	SvREFCNT_dec (invoke);
1859	}	2359	}
1860		2360
…		…
1867	sv_setsv (cb, &PL_sv_undef);	2367	sv_setsv (cb, &PL_sv_undef);
1868		2368
1869	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;	2369	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1870	coro->saved_deffh = 0;	2370	coro->saved_deffh = 0;
1871		2371
1872	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2372	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1873	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2373	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2374	{
		2375	SV *old = PL_diehook;
		2376	PL_diehook = 0;
		2377	SvREFCNT_dec (old);
1874	croak ("\3async_pool terminate\2\n");	2378	croak ("\3async_pool terminate\2\n");
		2379	}
1875		2380
1876	av_clear (GvAV (PL_defgv));	2381	av_clear (GvAV (PL_defgv));
1877	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2382	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1878	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2383	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1879		2384
…		…
1883	api_trace (coro_current, 0);	2388	api_trace (coro_current, 0);
1884		2389
1885	av_push (av_async_pool, newSVsv (coro_current));	2390	av_push (av_async_pool, newSVsv (coro_current));
1886	}	2391	}
1887		2392
		2393	#if 0
		2394
		2395	void
		2396	_generator_call (...)
		2397	PROTOTYPE: @
		2398	PPCODE:
		2399	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2400	xxxx
		2401	abort ();
		2402
		2403	SV *
		2404	gensub (SV *sub, ...)
		2405	PROTOTYPE: &;@
		2406	CODE:
		2407	{
		2408	struct coro *coro;
		2409	MAGIC *mg;
		2410	CV *xcv;
		2411	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2412	int i;
		2413
		2414	CvGV (ncv) = CvGV (cv);
		2415	CvFILE (ncv) = CvFILE (cv);
		2416
		2417	Newz (0, coro, 1, struct coro);
		2418	coro->args = newAV ();
		2419	coro->flags = CF_NEW;
		2420
		2421	av_extend (coro->args, items - 1);
		2422	for (i = 1; i < items; i++)
		2423	av_push (coro->args, newSVsv (ST (i)));
		2424
		2425	CvISXSUB_on (ncv);
		2426	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2427
		2428	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2429
		2430	CvXSUB (ncv) = CvXSUB (xcv);
		2431	CvANON_on (ncv);
		2432
		2433	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2434	RETVAL = newRV_noinc ((SV *)ncv);
		2435	}
		2436	OUTPUT:
		2437	RETVAL
		2438
		2439	#endif
		2440
1888		2441
1889	MODULE = Coro::State PACKAGE = Coro::AIO	2442	MODULE = Coro::State PACKAGE = Coro::AIO
1890		2443
1891	SV *	2444	void
1892	_get_state ()	2445	_get_state (SV *self)
1893	CODE:	2446	PPCODE:
1894	{	2447	{
1895	struct io_state *data;	2448	AV *defav = GvAV (PL_defgv);
1896		2449	AV *av = newAV ();
		2450	int i;
1897	RETVAL = newSV (sizeof (struct io_state));	2451	SV *data_sv = newSV (sizeof (struct io_state));
1898	data = (struct io_state *)SvPVX (RETVAL);	2452	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1899	SvCUR_set (RETVAL, sizeof (struct io_state));	2453	SvCUR_set (data_sv, sizeof (struct io_state));
1900	SvPOK_only (RETVAL);	2454	SvPOK_only (data_sv);
1901		2455
1902	data->errorno = errno;	2456	data->errorno = errno;
1903	data->laststype = PL_laststype;	2457	data->laststype = PL_laststype;
1904	data->laststatval = PL_laststatval;	2458	data->laststatval = PL_laststatval;
1905	data->statcache = PL_statcache;	2459	data->statcache = PL_statcache;
		2460
		2461	av_extend (av, AvFILLp (defav) + 1 + 1);
		2462
		2463	for (i = 0; i <= AvFILLp (defav); ++i)
		2464	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2465
		2466	av_push (av, data_sv);
		2467
		2468	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2469
		2470	api_ready (self);
1906	}	2471	}
1907	OUTPUT:
1908	RETVAL
1909		2472
1910	void	2473	void
1911	_set_state (char *data_)	2474	_set_state (SV *state)
1912	PROTOTYPE: $	2475	PROTOTYPE: $
1913	CODE:	2476	PPCODE:
1914	{	2477	{
1915	struct io_state *data = (void *)data_;	2478	AV *av = (AV *)SvRV (state);
		2479	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2480	int i;
1916		2481
1917	errno = data->errorno;	2482	errno = data->errorno;
1918	PL_laststype = data->laststype;	2483	PL_laststype = data->laststype;
1919	PL_laststatval = data->laststatval;	2484	PL_laststatval = data->laststatval;
1920	PL_statcache = data->statcache;	2485	PL_statcache = data->statcache;
1921	}
1922		2486
		2487	EXTEND (SP, AvFILLp (av));
		2488	for (i = 0; i < AvFILLp (av); ++i)
		2489	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2490	}
		2491
		2492
		2493	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2494
		2495	BOOT:
		2496	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2497
		2498	SV *
		2499	_schedule (...)
		2500	PROTOTYPE: @
		2501	CODE:
		2502	{
		2503	static int incede;
		2504
		2505	api_cede_notself ();
		2506
		2507	++incede;
		2508	while (coro_nready >= incede && api_cede ())
		2509	;
		2510
		2511	sv_setsv (sv_activity, &PL_sv_undef);
		2512	if (coro_nready >= incede)
		2513	{
		2514	PUSHMARK (SP);
		2515	PUTBACK;
		2516	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2517	SPAGAIN;
		2518	}
		2519
		2520	--incede;
		2521	}
		2522
		2523
		2524	MODULE = Coro::State PACKAGE = PerlIO::cede
		2525
		2526	BOOT:
		2527	PerlIO_define_layer (aTHX_ &PerlIO_cede);
		2528

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