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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.317 by root, Thu Nov 20 06:28:52 2008 UTC vs.
Revision 1.378 by root, Sat Dec 12 01:30:26 2009 UTC

		1	#define NDEBUG 1
		2
1	#include "libcoro/coro.c"	3	#include "libcoro/coro.c"
2		4
3	#define PERL_NO_GET_CONTEXT	5	#define PERL_NO_GET_CONTEXT
4	#define PERL_EXT	6	#define PERL_EXT
5		7
6	#include "EXTERN.h"	8	#include "EXTERN.h"
7	#include "perl.h"	9	#include "perl.h"
8	#include "XSUB.h"	10	#include "XSUB.h"
9	#include "perliol.h"	11	#include "perliol.h"
10		12
11	#include "patchlevel.h"	13	#include "schmorp.h"
12		14
13	#include <stdio.h>	15	#include <stdio.h>
14	#include <errno.h>	16	#include <errno.h>
15	#include <assert.h>	17	#include <assert.h>
		18
		19	#ifndef SVs_PADSTALE
		20	# define SVs_PADSTALE 0
		21	#endif
16		22
17	#ifdef WIN32	23	#ifdef WIN32
18	# undef setjmp	24	# undef setjmp
19	# undef longjmp	25	# undef longjmp
20	# undef _exit	26	# undef _exit
…		…
51	#endif	57	#endif
52		58
53	/* the maximum number of idle cctx that will be pooled */	59	/* the maximum number of idle cctx that will be pooled */
54	static int cctx_max_idle = 4;	60	static int cctx_max_idle = 4;
55		61
56	#define PERL_VERSION_ATLEAST(a,b,c) \
57	(PERL_REVISION > (a) \
58	|| (PERL_REVISION == (a) \
59	&& (PERL_VERSION > (b) \
60	|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61
62	#if !PERL_VERSION_ATLEAST (5,6,0)
63	# ifndef PL_ppaddr
64	# define PL_ppaddr ppaddr
65	# endif
66	# ifndef call_sv
67	# define call_sv perl_call_sv
68	# endif
69	# ifndef get_sv
70	# define get_sv perl_get_sv
71	# endif
72	# ifndef get_cv
73	# define get_cv perl_get_cv
74	# endif
75	# ifndef IS_PADGV
76	# define IS_PADGV(v) 0
77	# endif
78	# ifndef IS_PADCONST
79	# define IS_PADCONST(v) 0
80	# endif
81	#endif
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	#ifndef CvISXSUB_on
101	# define CvISXSUB_on(cv) (void)cv
102	#endif
103	#ifndef CvISXSUB
104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105	#endif
106
107	/* 5.8.7 */
108	#ifndef SvRV_set
109	# define SvRV_set(s,v) SvRV(s) = (v)
110	#endif
111
112	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	62	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
113	# undef CORO_STACKGUARD	63	# undef CORO_STACKGUARD
114	#endif	64	#endif
115		65
116	#ifndef CORO_STACKGUARD	66	#ifndef CORO_STACKGUARD
…		…
130	#else	80	#else
131	# define dSTACKLEVEL volatile void *stacklevel	81	# define dSTACKLEVEL volatile void *stacklevel
132	# define STACKLEVEL ((void *)&stacklevel)	82	# define STACKLEVEL ((void *)&stacklevel)
133	#endif	83	#endif
134		84
135	#define IN_DESTRUCT (PL_main_cv == Nullcv)	85	#define IN_DESTRUCT PL_dirty
136		86
137	#if __GNUC__ >= 3	87	#if __GNUC__ >= 3
138	# define attribute(x) __attribute__(x)	88	# define attribute(x) __attribute__(x)
139	# define expect(expr,value) __builtin_expect ((expr),(value))	89	# define expect(expr,value) __builtin_expect ((expr), (value))
140	# define INLINE static inline	90	# define INLINE static inline
141	#else	91	#else
142	# define attribute(x)	92	# define attribute(x)
143	# define expect(expr,value) (expr)	93	# define expect(expr,value) (expr)
144	# define INLINE static	94	# define INLINE static
…		…
156	# if CORO_PTHREAD	106	# if CORO_PTHREAD
157	static void *coro_thx;	107	static void *coro_thx;
158	# endif	108	# endif
159	#endif	109	#endif
160		110
		111	#ifdef __linux
		112	# include <time.h> /* for timespec */
		113	# include <syscall.h> /* for SYS_* */
		114	# ifdef SYS_clock_gettime
		115	# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		116	# define CORO_CLOCK_MONOTONIC 1
		117	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
		118	# endif
		119	#endif
		120
161	static double (*nvtime)(); /* so why doesn't it take void? */	121	static double (*nvtime)(); /* so why doesn't it take void? */
		122	static void (*u2time)(pTHX_ UV ret[2]);
162		123
163	/* we hijack an hopefully unused CV flag for our purposes */	124	/* we hijack an hopefully unused CV flag for our purposes */
164	#define CVf_SLF 0x4000	125	#define CVf_SLF 0x4000
165	static OP *pp_slf (pTHX);	126	static OP *pp_slf (pTHX);
166		127
…		…
170	static AV *main_mainstack; /* used to differentiate between $main and others */	131	static AV *main_mainstack; /* used to differentiate between $main and others */
171	static JMPENV *main_top_env;	132	static JMPENV *main_top_env;
172	static HV *coro_state_stash, *coro_stash;	133	static HV *coro_state_stash, *coro_stash;
173	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	134	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174		135
		136	static AV *av_destroy; /* destruction queue */
		137	static SV *sv_manager; /* the manager coro */
		138	static SV *sv_idle; /* $Coro::idle */
		139
175	static GV *irsgv; /* $/ */	140	static GV *irsgv; /* $/ */
176	static GV *stdoutgv; /* *STDOUT */	141	static GV *stdoutgv; /* *STDOUT */
177	static SV *rv_diehook;	142	static SV *rv_diehook;
178	static SV *rv_warnhook;	143	static SV *rv_warnhook;
179	static HV *hv_sig; /* %SIG */	144	static HV *hv_sig; /* %SIG */
180		145
181	/* async_pool helper stuff */	146	/* async_pool helper stuff */
182	static SV *sv_pool_rss;	147	static SV *sv_pool_rss;
183	static SV *sv_pool_size;	148	static SV *sv_pool_size;
184	static SV *sv_async_pool_idle;	149	static SV *sv_async_pool_idle; /* description string */
185	static AV *av_async_pool;	150	static AV *av_async_pool; /* idle pool */
186	static SV *sv_Coro;	151	static SV *sv_Coro; /* class string */
187	static CV *cv_pool_handler;	152	static CV *cv_pool_handler;
188	static CV *cv_coro_state_new;
189		153
190	/* Coro::AnyEvent */	154	/* Coro::AnyEvent */
191	static SV *sv_activity;	155	static SV *sv_activity;
		156
		157	/* enable processtime/realtime profiling */
		158	static char enable_times;
		159	typedef U32 coro_ts[2];
		160	static coro_ts time_real, time_cpu;
		161	static char times_valid;
192		162
193	static struct coro_cctx *cctx_first;	163	static struct coro_cctx *cctx_first;
194	static int cctx_count, cctx_idle;	164	static int cctx_count, cctx_idle;
195		165
196	enum {	166	enum {
…		…
222	int valgrind_id;	192	int valgrind_id;
223	#endif	193	#endif
224	unsigned char flags;	194	unsigned char flags;
225	} coro_cctx;	195	} coro_cctx;
226		196
		197	coro_cctx *cctx_current; /* the currently running cctx */
		198
		199	/*****************************************************************************/
		200
227	enum {	201	enum {
228	CF_RUNNING = 0x0001, /* coroutine is running */	202	CF_RUNNING = 0x0001, /* coroutine is running */
229	CF_READY = 0x0002, /* coroutine is ready */	203	CF_READY = 0x0002, /* coroutine is ready */
230	CF_NEW = 0x0004, /* has never been switched to */	204	CF_NEW = 0x0004, /* has never been switched to */
231	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	205	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		206	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
232	};	207	};
233		208
234	/* the structure where most of the perl state is stored, overlaid on the cxstack */	209	/* the structure where most of the perl state is stored, overlaid on the cxstack */
235	typedef struct	210	typedef struct
236	{	211	{
237	SV *defsv;	212	SV *defsv;
238	AV *defav;	213	AV *defav;
239	SV *errsv;	214	SV *errsv;
240	SV *irsgv;	215	SV *irsgv;
		216	HV *hinthv;
241	#define VAR(name,type) type name;	217	#define VAR(name,type) type name;
242	# include "state.h"	218	# include "state.h"
243	#undef VAR	219	#undef VAR
244	} perl_slots;	220	} perl_slots;
245		221
…		…
247		223
248	/* this is a structure representing a perl-level coroutine */	224	/* this is a structure representing a perl-level coroutine */
249	struct coro {	225	struct coro {
250	/* the C coroutine allocated to this perl coroutine, if any */	226	/* the C coroutine allocated to this perl coroutine, if any */
251	coro_cctx *cctx;	227	coro_cctx *cctx;
		228
		229	/* ready queue */
		230	struct coro *next_ready;
252		231
253	/* state data */	232	/* state data */
254	struct CoroSLF slf_frame; /* saved slf frame */	233	struct CoroSLF slf_frame; /* saved slf frame */
255	AV *mainstack;	234	AV *mainstack;
256	perl_slots *slot; /* basically the saved sp */	235	perl_slots *slot; /* basically the saved sp */
…		…
273	/* async_pool */	252	/* async_pool */
274	SV *saved_deffh;	253	SV *saved_deffh;
275	SV *invoke_cb;	254	SV *invoke_cb;
276	AV *invoke_av;	255	AV *invoke_av;
277		256
		257	/* on_enter/on_leave */
		258	AV *on_enter;
		259	AV *on_leave;
		260
		261	/* swap_sv */
		262	AV *swap_sv;
		263
		264	/* times */
		265	coro_ts t_cpu, t_real;
		266
278	/* linked list */	267	/* linked list */
279	struct coro *next, *prev;	268	struct coro *next, *prev;
280	};	269	};
281		270
282	typedef struct coro *Coro__State;	271	typedef struct coro *Coro__State;
…		…
287	/* the mainr easonw e don't support windows process emulation */	276	/* the mainr easonw e don't support windows process emulation */
288	static struct CoroSLF slf_frame; /* the current slf frame */	277	static struct CoroSLF slf_frame; /* the current slf frame */
289		278
290	/** Coro ********************************************************************/	279	/** Coro ********************************************************************/
291		280
292	#define PRIO_MAX 3	281	#define CORO_PRIO_MAX 3
293	#define PRIO_HIGH 1	282	#define CORO_PRIO_HIGH 1
294	#define PRIO_NORMAL 0	283	#define CORO_PRIO_NORMAL 0
295	#define PRIO_LOW -1	284	#define CORO_PRIO_LOW -1
296	#define PRIO_IDLE -3	285	#define CORO_PRIO_IDLE -3
297	#define PRIO_MIN -4	286	#define CORO_PRIO_MIN -4
298		287
299	/* for Coro.pm */	288	/* for Coro.pm */
300	static SV *coro_current;	289	static SV *coro_current;
301	static SV *coro_readyhook;	290	static SV *coro_readyhook;
302	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	291	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
303	static CV *cv_coro_run, *cv_coro_terminate;	292	static CV *cv_coro_run, *cv_coro_terminate;
304	static struct coro *coro_first;	293	static struct coro *coro_first;
305	#define coro_nready coroapi.nready	294	#define coro_nready coroapi.nready
		295
		296	/** Coro::Select ************************************************************/
		297
		298	static OP *(*coro_old_pp_sselect) (pTHX);
		299	static SV *coro_select_select;
		300
		301	/* horrible hack, but if it works... */
		302	static OP *
		303	coro_pp_sselect (pTHX)
		304	{
		305	dSP;
		306	PUSHMARK (SP - 4); /* fake argument list */
		307	XPUSHs (coro_select_select);
		308	PUTBACK;
		309
		310	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		311	PL_op->op_flags |= OPf_STACKED;
		312	PL_op->op_private = 0;
		313	return PL_ppaddr [OP_ENTERSUB](aTHX);
		314	}
306		315
307	/** lowlevel stuff **********************************************************/	316	/** lowlevel stuff **********************************************************/
308		317
309	static SV *	318	static SV *
310	coro_get_sv (pTHX_ const char *name, int create)	319	coro_get_sv (pTHX_ const char *name, int create)
…		…
334	get_hv (name, create);	343	get_hv (name, create);
335	#endif	344	#endif
336	return get_hv (name, create);	345	return get_hv (name, create);
337	}	346	}
338		347
339	/* may croak */	348	INLINE void
340	INLINE CV *	349	coro_times_update ()
341	coro_sv_2cv (pTHX_ SV *sv)
342	{	350	{
		351	#ifdef coro_clock_gettime
		352	struct timespec ts;
		353
		354	ts.tv_sec = ts.tv_nsec = 0;
		355	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		356	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
		357
		358	ts.tv_sec = ts.tv_nsec = 0;
		359	coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
		360	time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
		361	#else
		362	dTHX;
		363	UV tv[2];
		364
		365	u2time (aTHX_ tv);
		366	time_real [0] = tv [0];
		367	time_real [1] = tv [1] * 1000;
		368	#endif
		369	}
		370
		371	INLINE void
		372	coro_times_add (struct coro *c)
		373	{
		374	c->t_real [1] += time_real [1];
		375	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
		376	c->t_real [0] += time_real [0];
		377
		378	c->t_cpu [1] += time_cpu [1];
		379	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
		380	c->t_cpu [0] += time_cpu [0];
		381	}
		382
		383	INLINE void
		384	coro_times_sub (struct coro *c)
		385	{
		386	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
		387	c->t_real [1] -= time_real [1];
		388	c->t_real [0] -= time_real [0];
		389
		390	if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
		391	c->t_cpu [1] -= time_cpu [1];
		392	c->t_cpu [0] -= time_cpu [0];
		393	}
		394
		395	/*****************************************************************************/
		396	/* magic glue */
		397
		398	#define CORO_MAGIC_type_cv 26
		399	#define CORO_MAGIC_type_state PERL_MAGIC_ext
		400
		401	#define CORO_MAGIC_NN(sv, type) \
		402	(expect_true (SvMAGIC (sv)->mg_type == type) \
		403	? SvMAGIC (sv) \
		404	: mg_find (sv, type))
		405
		406	#define CORO_MAGIC(sv, type) \
		407	(expect_true (SvMAGIC (sv)) \
		408	? CORO_MAGIC_NN (sv, type) \
		409	: 0)
		410
		411	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		412	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
		413
		414	INLINE struct coro *
		415	SvSTATE_ (pTHX_ SV *coro)
		416	{
343	HV *st;	417	HV *stash;
344	GV *gvp;	418	MAGIC *mg;
345	return sv_2cv (sv, &st, &gvp, 0);	419
		420	if (SvROK (coro))
		421	coro = SvRV (coro);
		422
		423	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		424	croak ("Coro::State object required");
		425
		426	stash = SvSTASH (coro);
		427	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		428	{
		429	/* very slow, but rare, check */
		430	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		431	croak ("Coro::State object required");
		432	}
		433
		434	mg = CORO_MAGIC_state (coro);
		435	return (struct coro *)mg->mg_ptr;
346	}	436	}
		437
		438	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		439
		440	/* faster than SvSTATE, but expects a coroutine hv */
		441	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		442	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
		443
		444	/*****************************************************************************/
		445	/* padlist management and caching */
347		446
348	static AV *	447	static AV *
349	coro_clone_padlist (pTHX_ CV *cv)	448	coro_derive_padlist (pTHX_ CV *cv)
350	{	449	{
351	AV *padlist = CvPADLIST (cv);	450	AV *padlist = CvPADLIST (cv);
352	AV *newpadlist, *newpad;	451	AV *newpadlist, *newpad;
353		452
354	newpadlist = newAV ();	453	newpadlist = newAV ();
…		…
359	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	458	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
360	#endif	459	#endif
361	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	460	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
362	--AvFILLp (padlist);	461	--AvFILLp (padlist);
363		462
364	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));	463	av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
365	av_store (newpadlist, 1, (SV *)newpad);	464	av_store (newpadlist, 1, (SV *)newpad);
366		465
367	return newpadlist;	466	return newpadlist;
368	}	467	}
369		468
370	static void	469	static void
371	free_padlist (pTHX_ AV *padlist)	470	free_padlist (pTHX_ AV *padlist)
372	{	471	{
373	/* may be during global destruction */	472	/* may be during global destruction */
374	if (SvREFCNT (padlist))	473	if (!IN_DESTRUCT)
375	{	474	{
376	I32 i = AvFILLp (padlist);	475	I32 i = AvFILLp (padlist);
377	while (i >= 0)	476
		477	while (i > 0) /* special-case index 0 */
378	{	478	{
379	SV **svp = av_fetch (padlist, i--, FALSE);	479	/* we try to be extra-careful here */
380	if (svp)	480	AV *av = (AV *)AvARRAY (padlist)[i--];
381	{	481	I32 j = AvFILLp (av);
382	SV *sv;	482
383	while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))	483	while (j >= 0)
		484	SvREFCNT_dec (AvARRAY (av)[j--]);
		485
		486	AvFILLp (av) = -1;
384	SvREFCNT_dec (sv);	487	SvREFCNT_dec (av);
385
386	SvREFCNT_dec (*svp);
387	}
388	}	488	}
389		489
		490	SvREFCNT_dec (AvARRAY (padlist)[0]);
		491
		492	AvFILLp (padlist) = -1;
390	SvREFCNT_dec ((SV*)padlist);	493	SvREFCNT_dec ((SV*)padlist);
391	}	494	}
392	}	495	}
393		496
394	static int	497	static int
395	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)	498	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
396	{	499	{
397	AV *padlist;	500	AV *padlist;
398	AV *av = (AV *)mg->mg_obj;	501	AV *av = (AV *)mg->mg_obj;
		502
		503	/* perl manages to free our internal AV and _then_ call us */
		504	if (IN_DESTRUCT)
		505	return 0;
399		506
400	/* casting is fun. */	507	/* casting is fun. */
401	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	508	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
402	free_padlist (aTHX_ padlist);	509	free_padlist (aTHX_ padlist);
403		510
404	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	511	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
405		512
406	return 0;	513	return 0;
407	}	514	}
408
409	#define CORO_MAGIC_type_cv 26
410	#define CORO_MAGIC_type_state PERL_MAGIC_ext
411		515
412	static MGVTBL coro_cv_vtbl = {	516	static MGVTBL coro_cv_vtbl = {
413	0, 0, 0, 0,	517	0, 0, 0, 0,
414	coro_cv_free	518	coro_cv_free
415	};	519	};
416
417	#define CORO_MAGIC_NN(sv, type) \
418	(expect_true (SvMAGIC (sv)->mg_type == type) \
419	? SvMAGIC (sv) \
420	: mg_find (sv, type))
421
422	#define CORO_MAGIC(sv, type) \
423	(expect_true (SvMAGIC (sv)) \
424	? CORO_MAGIC_NN (sv, type) \
425	: 0)
426
427	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
428	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
429
430	INLINE struct coro *
431	SvSTATE_ (pTHX_ SV *coro)
432	{
433	HV *stash;
434	MAGIC *mg;
435
436	if (SvROK (coro))
437	coro = SvRV (coro);
438
439	if (expect_false (SvTYPE (coro) != SVt_PVHV))
440	croak ("Coro::State object required");
441
442	stash = SvSTASH (coro);
443	if (expect_false (stash != coro_stash && stash != coro_state_stash))
444	{
445	/* very slow, but rare, check */
446	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
447	croak ("Coro::State object required");
448	}
449
450	mg = CORO_MAGIC_state (coro);
451	return (struct coro *)mg->mg_ptr;
452	}
453
454	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456	/* faster than SvSTATE, but expects a coroutine hv */
457	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
459		520
460	/* the next two functions merely cache the padlists */	521	/* the next two functions merely cache the padlists */
461	static void	522	static void
462	get_padlist (pTHX_ CV *cv)	523	get_padlist (pTHX_ CV *cv)
463	{	524	{
…		…
474	CV *cp = Perl_cv_clone (aTHX_ cv);	535	CV *cp = Perl_cv_clone (aTHX_ cv);
475	CvPADLIST (cv) = CvPADLIST (cp);	536	CvPADLIST (cv) = CvPADLIST (cp);
476	CvPADLIST (cp) = 0;	537	CvPADLIST (cp) = 0;
477	SvREFCNT_dec (cp);	538	SvREFCNT_dec (cp);
478	#else	539	#else
479	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	540	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
480	#endif	541	#endif
481	}	542	}
482	}	543	}
483		544
484	static void	545	static void
…		…
491	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);	552	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
492		553
493	av = (AV *)mg->mg_obj;	554	av = (AV *)mg->mg_obj;
494		555
495	if (expect_false (AvFILLp (av) >= AvMAX (av)))	556	if (expect_false (AvFILLp (av) >= AvMAX (av)))
496	av_extend (av, AvMAX (av) + 1);	557	av_extend (av, AvFILLp (av) + 1);
497		558
498	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	559	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
499	}	560	}
500		561
501	/** load & save, init *******************************************************/	562	/** load & save, init *******************************************************/
		563
		564	/* swap sv heads, at least logically */
		565	static void
		566	swap_svs (pTHX_ Coro__State c)
		567	{
		568	int i;
		569
		570	for (i = 0; i <= AvFILLp (c->swap_sv); )
		571	{
		572	SV *a = AvARRAY (c->swap_sv)[i++];
		573	SV *b = AvARRAY (c->swap_sv)[i++];
		574
		575	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		576	SV tmp;
		577
		578	/* swap sv_any */
		579	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		580
		581	/* swap sv_flags */
		582	SvFLAGS (&tmp) = SvFLAGS (a);
		583	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		584	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		585
		586	#if PERL_VERSION_ATLEAST (5,10,0)
		587	/* perl 5.10 complicates this _quite_ a bit, but it also is
		588	* is much faster, so no quarrels here. alternatively, we could
		589	* sv_upgrade to avoid this.
		590	*/
		591	{
		592	/* swap sv_u */
		593	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		594
		595	/* if SvANY points to the head, we need to adjust the pointers,
		596	* as the pointer for a still points to b, and maybe vice versa.
		597	*/
		598	#define svany_in_head(type) \
		599	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
		600
		601	if (svany_in_head (SvTYPE (a)))
		602	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		603
		604	if (svany_in_head (SvTYPE (b)))
		605	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		606	}
		607	#endif
		608	}
		609	}
		610
		611	#define SWAP_SVS(coro) \
		612	if (expect_false ((coro)->swap_sv)) \
		613	swap_svs (aTHX_ (coro))
		614
		615	static void
		616	on_enterleave_call (pTHX_ SV *cb);
502		617
503	static void	618	static void
504	load_perl (pTHX_ Coro__State c)	619	load_perl (pTHX_ Coro__State c)
505	{	620	{
506	perl_slots *slot = c->slot;	621	perl_slots *slot = c->slot;
507	c->slot = 0;	622	c->slot = 0;
508		623
509	PL_mainstack = c->mainstack;	624	PL_mainstack = c->mainstack;
510		625
511	GvSV (PL_defgv) = slot->defsv;	626	GvSV (PL_defgv) = slot->defsv;
512	GvAV (PL_defgv) = slot->defav;	627	GvAV (PL_defgv) = slot->defav;
513	GvSV (PL_errgv) = slot->errsv;	628	GvSV (PL_errgv) = slot->errsv;
514	GvSV (irsgv) = slot->irsgv;	629	GvSV (irsgv) = slot->irsgv;
		630	GvHV (PL_hintgv) = slot->hinthv;
515		631
516	#define VAR(name,type) PL_ ## name = slot->name;	632	#define VAR(name,type) PL_ ## name = slot->name;
517	# include "state.h"	633	# include "state.h"
518	#undef VAR	634	#undef VAR
519		635
…		…
533	PUTBACK;	649	PUTBACK;
534	}	650	}
535		651
536	slf_frame = c->slf_frame;	652	slf_frame = c->slf_frame;
537	CORO_THROW = c->except;	653	CORO_THROW = c->except;
		654
		655	if (expect_false (enable_times))
		656	{
		657	if (expect_false (!times_valid))
		658	coro_times_update ();
		659
		660	coro_times_sub (c);
		661	}
		662
		663	if (expect_false (c->on_enter))
		664	{
		665	int i;
		666
		667	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
		668	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
		669	}
		670
		671	SWAP_SVS (c);
538	}	672	}
539		673
540	static void	674	static void
541	save_perl (pTHX_ Coro__State c)	675	save_perl (pTHX_ Coro__State c)
542	{	676	{
		677	SWAP_SVS (c);
		678
		679	if (expect_false (c->on_leave))
		680	{
		681	int i;
		682
		683	for (i = AvFILLp (c->on_leave); i >= 0; --i)
		684	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
		685	}
		686
		687	times_valid = 0;
		688
		689	if (expect_false (enable_times))
		690	{
		691	coro_times_update (); times_valid = 1;
		692	coro_times_add (c);
		693	}
		694
543	c->except = CORO_THROW;	695	c->except = CORO_THROW;
544	c->slf_frame = slf_frame;	696	c->slf_frame = slf_frame;
545		697
546	{	698	{
547	dSP;	699	dSP;
…		…
560	{	712	{
561	while (expect_true (cxix >= 0))	713	while (expect_true (cxix >= 0))
562	{	714	{
563	PERL_CONTEXT *cx = &ccstk[cxix--];	715	PERL_CONTEXT *cx = &ccstk[cxix--];
564		716
565	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))	717	if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
566	{	718	{
567	CV *cv = cx->blk_sub.cv;	719	CV *cv = cx->blk_sub.cv;
568		720
569	if (expect_true (CvDEPTH (cv)))	721	if (expect_true (CvDEPTH (cv)))
570	{	722	{
…		…
594	/* we manually unroll here, as usually 2 slots is enough */	746	/* we manually unroll here, as usually 2 slots is enough */
595	if (SLOT_COUNT >= 1) CXINC;	747	if (SLOT_COUNT >= 1) CXINC;
596	if (SLOT_COUNT >= 2) CXINC;	748	if (SLOT_COUNT >= 2) CXINC;
597	if (SLOT_COUNT >= 3) CXINC;	749	if (SLOT_COUNT >= 3) CXINC;
598	{	750	{
599	int i;	751	unsigned int i;
600	for (i = 3; i < SLOT_COUNT; ++i)	752	for (i = 3; i < SLOT_COUNT; ++i)
601	CXINC;	753	CXINC;
602	}	754	}
603	cxstack_ix -= SLOT_COUNT; /* undo allocation */	755	cxstack_ix -= SLOT_COUNT; /* undo allocation */
604		756
605	c->mainstack = PL_mainstack;	757	c->mainstack = PL_mainstack;
606		758
607	{	759	{
608	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	760	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
609		761
610	slot->defav = GvAV (PL_defgv);	762	slot->defav = GvAV (PL_defgv);
611	slot->defsv = DEFSV;	763	slot->defsv = DEFSV;
612	slot->errsv = ERRSV;	764	slot->errsv = ERRSV;
613	slot->irsgv = GvSV (irsgv);	765	slot->irsgv = GvSV (irsgv);
		766	slot->hinthv = GvHV (PL_hintgv);
614		767
615	#define VAR(name,type) slot->name = PL_ ## name;	768	#define VAR(name,type) slot->name = PL_ ## name;
616	# include "state.h"	769	# include "state.h"
617	#undef VAR	770	#undef VAR
618	}	771	}
…		…
745	#endif	898	#endif
746		899
747	/*	900	/*
748	* This overrides the default magic get method of %SIG elements.	901	* This overrides the default magic get method of %SIG elements.
749	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	902	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
750	* and instead of tryign to save and restore the hash elements, we just provide	903	* and instead of trying to save and restore the hash elements, we just provide
751	* readback here.	904	* readback here.
752	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
753	* not expecting this to actually change the hook. This is a potential problem
754	* when a schedule happens then, but we ignore this.
755	*/	905	*/
756	static int	906	static int
757	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)	907	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
758	{	908	{
759	const char *s = MgPV_nolen_const (mg);	909	const char *s = MgPV_nolen_const (mg);
…		…
812	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;	962	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813		963
814	if (svp)	964	if (svp)
815	{	965	{
816	SV *old = *svp;	966	SV *old = *svp;
817	*svp = newSVsv (sv);	967	*svp = SvOK (sv) ? newSVsv (sv) : 0;
818	SvREFCNT_dec (old);	968	SvREFCNT_dec (old);
819	return 0;	969	return 0;
820	}	970	}
821	}	971	}
822		972
…		…
834	slf_check_nop (pTHX_ struct CoroSLF *frame)	984	slf_check_nop (pTHX_ struct CoroSLF *frame)
835	{	985	{
836	return 0;	986	return 0;
837	}	987	}
838		988
839	static UNOP coro_setup_op;	989	static int
		990	slf_check_repeat (pTHX_ struct CoroSLF *frame)
		991	{
		992	return 1;
		993	}
		994
		995	static UNOP init_perl_op;
840		996
841	static void NOINLINE /* noinline to keep it out of the transfer fast path */	997	static void NOINLINE /* noinline to keep it out of the transfer fast path */
842	coro_setup (pTHX_ struct coro *coro)	998	init_perl (pTHX_ struct coro *coro)
843	{	999	{
844	/*	1000	/*
845	* emulate part of the perl startup here.	1001	* emulate part of the perl startup here.
846	*/	1002	*/
847	coro_init_stacks (aTHX);	1003	coro_init_stacks (aTHX);
848		1004
849	PL_runops = RUNOPS_DEFAULT;	1005	PL_runops = RUNOPS_DEFAULT;
850	PL_curcop = &PL_compiling;	1006	PL_curcop = &PL_compiling;
851	PL_in_eval = EVAL_NULL;	1007	PL_in_eval = EVAL_NULL;
852	PL_comppad = 0;	1008	PL_comppad = 0;
		1009	PL_comppad_name = 0;
		1010	PL_comppad_name_fill = 0;
		1011	PL_comppad_name_floor = 0;
853	PL_curpm = 0;	1012	PL_curpm = 0;
854	PL_curpad = 0;	1013	PL_curpad = 0;
855	PL_localizing = 0;	1014	PL_localizing = 0;
856	PL_dirty = 0;	1015	PL_dirty = 0;
857	PL_restartop = 0;	1016	PL_restartop = 0;
858	#if PERL_VERSION_ATLEAST (5,10,0)	1017	#if PERL_VERSION_ATLEAST (5,10,0)
859	PL_parser = 0;	1018	PL_parser = 0;
860	#endif	1019	#endif
		1020	PL_hints = 0;
861		1021
862	/* recreate the die/warn hooks */	1022	/* recreate the die/warn hooks */
863	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	1023	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
864	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);	1024	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
865		1025
866	GvSV (PL_defgv) = newSV (0);	1026	GvSV (PL_defgv) = newSV (0);
867	GvAV (PL_defgv) = coro->args; coro->args = 0;	1027	GvAV (PL_defgv) = coro->args; coro->args = 0;
868	GvSV (PL_errgv) = newSV (0);	1028	GvSV (PL_errgv) = newSV (0);
869	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	1029	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		1030	GvHV (PL_hintgv) = 0;
870	PL_rs = newSVsv (GvSV (irsgv));	1031	PL_rs = newSVsv (GvSV (irsgv));
871	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	1032	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
872		1033
873	{	1034	{
874	dSP;	1035	dSP;
…		…
891	*/	1052	*/
892	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1053	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1054	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894		1055
895	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1056	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896	coro_setup_op.op_next = PL_op;	1057	init_perl_op.op_next = PL_op;
897	coro_setup_op.op_type = OP_CUSTOM;	1058	init_perl_op.op_type = OP_ENTERSUB;
898	coro_setup_op.op_ppaddr = pp_slf;	1059	init_perl_op.op_ppaddr = pp_slf;
899	/* no flags etc. required, as an init function won't be called */	1060	/* no flags etc. required, as an init function won't be called */
900		1061
901	PL_op = (OP *)&coro_setup_op;	1062	PL_op = (OP *)&init_perl_op;
902		1063
903	/* copy throw, in case it was set before coro_setup */	1064	/* copy throw, in case it was set before init_perl */
904	CORO_THROW = coro->except;	1065	CORO_THROW = coro->except;
905	}
906		1066
		1067	SWAP_SVS (coro);
		1068
		1069	if (expect_false (enable_times))
		1070	{
		1071	coro_times_update ();
		1072	coro_times_sub (coro);
		1073	}
		1074	}
		1075
907	static void	1076	static void
908	coro_destruct (pTHX_ struct coro *coro)	1077	coro_unwind_stacks (pTHX)
909	{	1078	{
910	if (!IN_DESTRUCT)	1079	if (!IN_DESTRUCT)
911	{	1080	{
912	/* restore all saved variables and stuff */	1081	/* restore all saved variables and stuff */
913	LEAVE_SCOPE (0);	1082	LEAVE_SCOPE (0);
…		…
921	POPSTACK_TO (PL_mainstack);	1090	POPSTACK_TO (PL_mainstack);
922		1091
923	/* unwind main stack */	1092	/* unwind main stack */
924	dounwind (-1);	1093	dounwind (-1);
925	}	1094	}
		1095	}
926		1096
927	SvREFCNT_dec (GvSV (PL_defgv));	1097	static void
928	SvREFCNT_dec (GvAV (PL_defgv));	1098	destroy_perl (pTHX_ struct coro *coro)
929	SvREFCNT_dec (GvSV (PL_errgv));	1099	{
930	SvREFCNT_dec (PL_defoutgv);	1100	SV *svf [9];
931	SvREFCNT_dec (PL_rs);
932	SvREFCNT_dec (GvSV (irsgv));
933		1101
934	SvREFCNT_dec (PL_diehook);
935	SvREFCNT_dec (PL_warnhook);
936		1102	{
		1103	struct coro *current = SvSTATE_current;
		1104
		1105	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
		1106
		1107	save_perl (aTHX_ current);
		1108	load_perl (aTHX_ coro);
		1109
		1110	coro_unwind_stacks (aTHX);
		1111	coro_destruct_stacks (aTHX);
		1112
		1113	/* restore swapped sv's */
		1114	SWAP_SVS (coro);
		1115
		1116	// now save some sv's to be free'd later
		1117	svf [0] = GvSV (PL_defgv);
		1118	svf [1] = (SV *)GvAV (PL_defgv);
		1119	svf [2] = GvSV (PL_errgv);
		1120	svf [3] = (SV *)PL_defoutgv;
		1121	svf [4] = PL_rs;
		1122	svf [5] = GvSV (irsgv);
		1123	svf [6] = (SV *)GvHV (PL_hintgv);
		1124	svf [7] = PL_diehook;
		1125	svf [8] = PL_warnhook;
		1126	assert (9 == sizeof (svf) / sizeof (*svf));
		1127
		1128	load_perl (aTHX_ current);
		1129	}
		1130
		1131	{
		1132	unsigned int i;
		1133
		1134	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
		1135	SvREFCNT_dec (svf [i]);
		1136
937	SvREFCNT_dec (coro->saved_deffh);	1137	SvREFCNT_dec (coro->saved_deffh);
938	SvREFCNT_dec (coro->rouse_cb);	1138	SvREFCNT_dec (coro->rouse_cb);
939	SvREFCNT_dec (coro->invoke_cb);	1139	SvREFCNT_dec (coro->invoke_cb);
940	SvREFCNT_dec (coro->invoke_av);	1140	SvREFCNT_dec (coro->invoke_av);
941		1141	}
942	coro_destruct_stacks (aTHX);
943	}	1142	}
944		1143
945	INLINE void	1144	INLINE void
946	free_coro_mortal (pTHX)	1145	free_coro_mortal (pTHX)
947	{	1146	{
…		…
955	static int	1154	static int
956	runops_trace (pTHX)	1155	runops_trace (pTHX)
957	{	1156	{
958	COP *oldcop = 0;	1157	COP *oldcop = 0;
959	int oldcxix = -2;	1158	int oldcxix = -2;
960	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
961	coro_cctx *cctx = coro->cctx;
962		1159
963	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	1160	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
964	{	1161	{
965	PERL_ASYNC_CHECK ();	1162	PERL_ASYNC_CHECK ();
966		1163
967	if (cctx->flags & CC_TRACE_ALL)	1164	if (cctx_current->flags & CC_TRACE_ALL)
968	{	1165	{
969	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	1166	if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
970	{	1167	{
971	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1168	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
972	SV **bot, **top;	1169	SV **bot, **top;
973	AV *av = newAV (); /* return values */	1170	AV *av = newAV (); /* return values */
974	SV **cb;	1171	SV **cb;
…		…
1011		1208
1012	if (PL_curcop != &PL_compiling)	1209	if (PL_curcop != &PL_compiling)
1013	{	1210	{
1014	SV **cb;	1211	SV **cb;
1015		1212
1016	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	1213	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1017	{	1214	{
1018	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1215	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1019		1216
1020	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1217	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1021	{	1218	{
1022	runops_proc_t old_runops = PL_runops;
1023	dSP;	1219	dSP;
1024	GV *gv = CvGV (cx->blk_sub.cv);	1220	GV *gv = CvGV (cx->blk_sub.cv);
1025	SV *fullname = sv_2mortal (newSV (0));	1221	SV *fullname = sv_2mortal (newSV (0));
1026		1222
1027	if (isGV (gv))	1223	if (isGV (gv))
…		…
1045	}	1241	}
1046		1242
1047	oldcxix = cxstack_ix;	1243	oldcxix = cxstack_ix;
1048	}	1244	}
1049		1245
1050	if (cctx->flags & CC_TRACE_LINE)	1246	if (cctx_current->flags & CC_TRACE_LINE)
1051	{	1247	{
1052	dSP;	1248	dSP;
1053		1249
1054	PL_runops = RUNOPS_DEFAULT;	1250	PL_runops = RUNOPS_DEFAULT;
1055	ENTER;	1251	ENTER;
…		…
1074		1270
1075	TAINT_NOT;	1271	TAINT_NOT;
1076	return 0;	1272	return 0;
1077	}	1273	}
1078		1274
1079	static struct coro_cctx *cctx_ssl_cctx;
1080	static struct CoroSLF cctx_ssl_frame;	1275	static struct CoroSLF cctx_ssl_frame;
1081		1276
1082	static void	1277	static void
1083	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	1278	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084	{	1279	{
1085	ta->prev = (struct coro *)cctx_ssl_cctx;
1086	ta->next = 0;	1280	ta->prev = 0;
1087	}	1281	}
1088		1282
1089	static int	1283	static int
1090	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)	1284	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091	{	1285	{
…		…
1094	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */	1288	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095	}	1289	}
1096		1290
1097	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */	1291	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1098	static void NOINLINE	1292	static void NOINLINE
1099	cctx_prepare (pTHX_ coro_cctx *cctx)	1293	cctx_prepare (pTHX)
1100	{	1294	{
1101	PL_top_env = &PL_start_env;	1295	PL_top_env = &PL_start_env;
1102		1296
1103	if (cctx->flags & CC_TRACE)	1297	if (cctx_current->flags & CC_TRACE)
1104	PL_runops = runops_trace;	1298	PL_runops = runops_trace;
1105		1299
1106	/* we already must be executing an SLF op, there is no other valid way	1300	/* we already must be executing an SLF op, there is no other valid way
1107	* that can lead to creation of a new cctx */	1301	* that can lead to creation of a new cctx */
1108	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",	1302	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));	1303	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1110		1304
1111	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */	1305	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1112	cctx_ssl_cctx = cctx;
1113	cctx_ssl_frame = slf_frame;	1306	cctx_ssl_frame = slf_frame;
1114		1307
1115	slf_frame.prepare = slf_prepare_set_stacklevel;	1308	slf_frame.prepare = slf_prepare_set_stacklevel;
1116	slf_frame.check = slf_check_set_stacklevel;	1309	slf_frame.check = slf_check_set_stacklevel;
1117	}	1310	}
…		…
1140	/* normally we would need to skip the entersub here */	1333	/* normally we would need to skip the entersub here */
1141	/* not doing so will re-execute it, which is exactly what we want */	1334	/* not doing so will re-execute it, which is exactly what we want */
1142	/* PL_nop = PL_nop->op_next */	1335	/* PL_nop = PL_nop->op_next */
1143		1336
1144	/* inject a fake subroutine call to cctx_init */	1337	/* inject a fake subroutine call to cctx_init */
1145	cctx_prepare (aTHX_ (coro_cctx *)arg);	1338	cctx_prepare (aTHX);
1146		1339
1147	/* cctx_run is the alternative tail of transfer() */	1340	/* cctx_run is the alternative tail of transfer() */
1148	transfer_tail (aTHX);	1341	transfer_tail (aTHX);
1149		1342
1150	/* somebody or something will hit me for both perl_run and PL_restartop */	1343	/* somebody or something will hit me for both perl_run and PL_restartop */
1151	PL_restartop = PL_op;	1344	PL_restartop = PL_op;
1152	perl_run (PL_curinterp);	1345	perl_run (PL_curinterp);
1153	/*	1346	/*
1154	* Unfortunately, there is no way to get at the return values of the	1347	* Unfortunately, there is no way to get at the return values of the
1155	* coro body here, as perl_run destroys these	1348	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1349	* runtime errors here, as this is just a random interpreter, not a thread.
1156	*/	1350	*/
1157		1351
1158	/*	1352	/*
1159	* If perl-run returns we assume exit() was being called or the coro	1353	* If perl-run returns we assume exit() was being called or the coro
1160	* fell off the end, which seems to be the only valid (non-bug)	1354	* fell off the end, which seems to be the only valid (non-bug)
1161	* reason for perl_run to return. We try to exit by jumping to the	1355	* reason for perl_run to return. We try to exit by jumping to the
1162	* bootstrap-time "top" top_env, as we cannot restore the "main"	1356	* bootstrap-time "top" top_env, as we cannot restore the "main"
1163	* coroutine as Coro has no such concept	1357	* coroutine as Coro has no such concept.
		1358	* This actually isn't valid with the pthread backend, but OSes requiring
		1359	* that backend are too broken to do it in a standards-compliant way.
1164	*/	1360	*/
1165	PL_top_env = main_top_env;	1361	PL_top_env = main_top_env;
1166	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1362	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167	}	1363	}
1168	}	1364	}
…		…
1245	cctx_destroy (coro_cctx *cctx)	1441	cctx_destroy (coro_cctx *cctx)
1246	{	1442	{
1247	if (!cctx)	1443	if (!cctx)
1248	return;	1444	return;
1249		1445
		1446	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
		1447
1250	--cctx_count;	1448	--cctx_count;
1251	coro_destroy (&cctx->cctx);	1449	coro_destroy (&cctx->cctx);
1252		1450
1253	/* coro_transfer creates new, empty cctx's */	1451	/* coro_transfer creates new, empty cctx's */
1254	if (cctx->sptr)	1452	if (cctx->sptr)
…		…
1317	/* TODO: throwing up here is considered harmful */	1515	/* TODO: throwing up here is considered harmful */
1318		1516
1319	if (expect_true (prev != next))	1517	if (expect_true (prev != next))
1320	{	1518	{
1321	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1519	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1322	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1520	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1323		1521
1324	if (expect_false (next->flags & CF_RUNNING))
1325	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1326
1327	if (expect_false (next->flags & CF_DESTROYED))	1522	if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1328	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");	1523	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1329		1524
1330	#if !PERL_VERSION_ATLEAST (5,10,0)	1525	#if !PERL_VERSION_ATLEAST (5,10,0)
1331	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1526	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1332	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1527	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1333	#endif	1528	#endif
…		…
1339	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1534	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1340	{	1535	{
1341	dSTACKLEVEL;	1536	dSTACKLEVEL;
1342		1537
1343	/* sometimes transfer is only called to set idle_sp */	1538	/* sometimes transfer is only called to set idle_sp */
1344	if (expect_false (!next))	1539	if (expect_false (!prev))
1345	{	1540	{
1346	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1541	cctx_current->idle_sp = STACKLEVEL;
1347	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1542	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1348	}	1543	}
1349	else if (expect_true (prev != next))	1544	else if (expect_true (prev != next))
1350	{	1545	{
1351	coro_cctx *prev__cctx;	1546	coro_cctx *cctx_prev;
1352		1547
1353	if (expect_false (prev->flags & CF_NEW))	1548	if (expect_false (prev->flags & CF_NEW))
1354	{	1549	{
1355	/* create a new empty/source context */	1550	/* create a new empty/source context */
1356	prev->cctx = cctx_new_empty ();
1357	prev->flags &= ~CF_NEW;	1551	prev->flags &= ~CF_NEW;
1358	prev->flags |= CF_RUNNING;	1552	prev->flags |= CF_RUNNING;
1359	}	1553	}
1360		1554
1361	prev->flags &= ~CF_RUNNING;	1555	prev->flags &= ~CF_RUNNING;
…		…
1367	if (expect_false (next->flags & CF_NEW))	1561	if (expect_false (next->flags & CF_NEW))
1368	{	1562	{
1369	/* need to start coroutine */	1563	/* need to start coroutine */
1370	next->flags &= ~CF_NEW;	1564	next->flags &= ~CF_NEW;
1371	/* setup coroutine call */	1565	/* setup coroutine call */
1372	coro_setup (aTHX_ next);	1566	init_perl (aTHX_ next);
1373	}	1567	}
1374	else	1568	else
1375	load_perl (aTHX_ next);	1569	load_perl (aTHX_ next);
1376		1570
1377	prev__cctx = prev->cctx;
1378
1379	/* possibly untie and reuse the cctx */	1571	/* possibly untie and reuse the cctx */
1380	if (expect_true (	1572	if (expect_true (
1381	prev__cctx->idle_sp == STACKLEVEL	1573	cctx_current->idle_sp == STACKLEVEL
1382	&& !(prev__cctx->flags & CC_TRACE)	1574	&& !(cctx_current->flags & CC_TRACE)
1383	&& !force_cctx	1575	&& !force_cctx
1384	))	1576	))
1385	{	1577	{
1386	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1578	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1387	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1579	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1388		1580
1389	prev->cctx = 0;
1390
1391	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1581	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1392	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1582	/* without this the next cctx_get might destroy the running cctx while still in use */
1393	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1583	if (expect_false (CCTX_EXPIRED (cctx_current)))
1394	if (!next->cctx)	1584	if (expect_true (!next->cctx))
1395	next->cctx = cctx_get (aTHX);	1585	next->cctx = cctx_get (aTHX);
1396		1586
1397	cctx_put (prev__cctx);	1587	cctx_put (cctx_current);
1398	}	1588	}
		1589	else
		1590	prev->cctx = cctx_current;
1399		1591
1400	++next->usecount;	1592	++next->usecount;
1401		1593
1402	if (expect_true (!next->cctx))	1594	cctx_prev = cctx_current;
1403	next->cctx = cctx_get (aTHX);	1595	cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1404		1596
1405	if (expect_false (prev__cctx != next->cctx))	1597	next->cctx = 0;
		1598
		1599	if (expect_false (cctx_prev != cctx_current))
1406	{	1600	{
1407	prev__cctx->top_env = PL_top_env;	1601	cctx_prev->top_env = PL_top_env;
1408	PL_top_env = next->cctx->top_env;	1602	PL_top_env = cctx_current->top_env;
1409	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1603	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1410	}	1604	}
1411		1605
1412	transfer_tail (aTHX);	1606	transfer_tail (aTHX);
1413	}	1607	}
1414	}	1608	}
…		…
1422	coro_state_destroy (pTHX_ struct coro *coro)	1616	coro_state_destroy (pTHX_ struct coro *coro)
1423	{	1617	{
1424	if (coro->flags & CF_DESTROYED)	1618	if (coro->flags & CF_DESTROYED)
1425	return 0;	1619	return 0;
1426		1620
1427	if (coro->on_destroy)	1621	if (coro->on_destroy && !PL_dirty)
1428	coro->on_destroy (aTHX_ coro);	1622	coro->on_destroy (aTHX_ coro);
1429		1623
1430	coro->flags |= CF_DESTROYED;	1624	coro->flags |= CF_DESTROYED;
1431		1625
1432	if (coro->flags & CF_READY)	1626	if (coro->flags & CF_READY)
…		…
1436	--coro_nready;	1630	--coro_nready;
1437	}	1631	}
1438	else	1632	else
1439	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1633	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1440		1634
1441	if (coro->mainstack && coro->mainstack != main_mainstack)	1635	if (coro->mainstack
1442	{	1636	&& coro->mainstack != main_mainstack
1443	struct coro temp;	1637	&& coro->slot
1444		1638	&& !PL_dirty)
1445	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1446
1447	save_perl (aTHX_ &temp);
1448	load_perl (aTHX_ coro);	1639	destroy_perl (aTHX_ coro);
1449		1640
1450	coro_destruct (aTHX_ coro);	1641	if (coro->next) coro->next->prev = coro->prev;
1451		1642	if (coro->prev) coro->prev->next = coro->next;
1452	load_perl (aTHX_ &temp);	1643	if (coro == coro_first) coro_first = coro->next;
1453
1454	coro->slot = 0;
1455	}
1456		1644
1457	cctx_destroy (coro->cctx);	1645	cctx_destroy (coro->cctx);
1458	SvREFCNT_dec (coro->startcv);	1646	SvREFCNT_dec (coro->startcv);
1459	SvREFCNT_dec (coro->args);	1647	SvREFCNT_dec (coro->args);
		1648	SvREFCNT_dec (coro->swap_sv);
1460	SvREFCNT_dec (CORO_THROW);	1649	SvREFCNT_dec (CORO_THROW);
1461
1462	if (coro->next) coro->next->prev = coro->prev;
1463	if (coro->prev) coro->prev->next = coro->next;
1464	if (coro == coro_first) coro_first = coro->next;
1465		1650
1466	return 1;	1651	return 1;
1467	}	1652	}
1468		1653
1469	static int	1654	static int
…		…
1519		1704
1520	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1705	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1521	TRANSFER (ta, 1);	1706	TRANSFER (ta, 1);
1522	}	1707	}
1523		1708
1524	/*****************************************************************************/
1525	/* gensub: simple closure generation utility */
1526
1527	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529	/* create a closure from XS, returns a code reference */
1530	/* the arg can be accessed via GENSUB_ARG from the callback */
1531	/* the callback must use dXSARGS/XSRETURN */
1532	static SV *
1533	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534	{
1535	CV *cv = (CV *)newSV (0);
1536
1537	sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539	CvANON_on (cv);
1540	CvISXSUB_on (cv);
1541	CvXSUB (cv) = xsub;
1542	GENSUB_ARG = arg;
1543
1544	return newRV_noinc ((SV *)cv);
1545	}
1546
1547	/** Coro ********************************************************************/	1709	/** Coro ********************************************************************/
1548		1710
1549	INLINE void	1711	INLINE void
1550	coro_enq (pTHX_ struct coro *coro)	1712	coro_enq (pTHX_ struct coro *coro)
1551	{	1713	{
1552	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));	1714	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1553	}
1554		1715
1555	INLINE SV *	1716	SvREFCNT_inc_NN (coro->hv);
		1717
		1718	coro->next_ready = 0;
		1719	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
		1720	ready [1] = coro;
		1721	}
		1722
		1723	INLINE struct coro *
1556	coro_deq (pTHX)	1724	coro_deq (pTHX)
1557	{	1725	{
1558	int prio;	1726	int prio;
1559		1727
1560	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1728	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1561	if (AvFILLp (coro_ready [prio]) >= 0)	1729	{
1562	return av_shift (coro_ready [prio]);	1730	struct coro **ready = coro_ready [prio];
		1731
		1732	if (ready [0])
		1733	{
		1734	struct coro *coro = ready [0];
		1735	ready [0] = coro->next_ready;
		1736	return coro;
		1737	}
		1738	}
1563		1739
1564	return 0;	1740	return 0;
		1741	}
		1742
		1743	static void
		1744	invoke_sv_ready_hook_helper (void)
		1745	{
		1746	dTHX;
		1747	dSP;
		1748
		1749	ENTER;
		1750	SAVETMPS;
		1751
		1752	PUSHMARK (SP);
		1753	PUTBACK;
		1754	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1755
		1756	FREETMPS;
		1757	LEAVE;
1565	}	1758	}
1566		1759
1567	static int	1760	static int
1568	api_ready (pTHX_ SV *coro_sv)	1761	api_ready (pTHX_ SV *coro_sv)
1569	{	1762	{
1570	struct coro *coro;
1571	SV *sv_hook;
1572	void (*xs_hook)(void);
1573
1574	if (SvROK (coro_sv))
1575	coro_sv = SvRV (coro_sv);
1576
1577	coro = SvSTATE (coro_sv);	1763	struct coro *coro = SvSTATE (coro_sv);
1578		1764
1579	if (coro->flags & CF_READY)	1765	if (coro->flags & CF_READY)
1580	return 0;	1766	return 0;
1581		1767
1582	coro->flags |= CF_READY;	1768	coro->flags |= CF_READY;
1583		1769
1584	sv_hook = coro_nready ? 0 : coro_readyhook;
1585	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1586
1587	coro_enq (aTHX_ coro);	1770	coro_enq (aTHX_ coro);
1588	++coro_nready;
1589		1771
1590	if (sv_hook)	1772	if (!coro_nready++)
1591	{	1773	if (coroapi.readyhook)
1592	dSP;	1774	coroapi.readyhook ();
1593
1594	ENTER;
1595	SAVETMPS;
1596
1597	PUSHMARK (SP);
1598	PUTBACK;
1599	call_sv (sv_hook, G_VOID | G_DISCARD);
1600
1601	FREETMPS;
1602	LEAVE;
1603	}
1604
1605	if (xs_hook)
1606	xs_hook ();
1607		1775
1608	return 1;	1776	return 1;
1609	}	1777	}
1610		1778
1611	static int	1779	static int
…		…
1634	static void	1802	static void
1635	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1803	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1636	{	1804	{
1637	for (;;)	1805	for (;;)
1638	{	1806	{
1639	SV *next_sv = coro_deq (aTHX);	1807	struct coro *next = coro_deq (aTHX);
1640		1808
1641	if (expect_true (next_sv))	1809	if (expect_true (next))
1642	{	1810	{
1643	struct coro *next = SvSTATE_hv (next_sv);
1644
1645	/* cannot transfer to destroyed coros, skip and look for next */	1811	/* cannot transfer to destroyed coros, skip and look for next */
1646	if (expect_false (next->flags & CF_DESTROYED))	1812	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1647	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */	1813	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1648	else	1814	else
1649	{	1815	{
1650	next->flags &= ~CF_READY;	1816	next->flags &= ~CF_READY;
1651	--coro_nready;	1817	--coro_nready;
1652		1818
1653	return prepare_schedule_to (aTHX_ ta, next);	1819	prepare_schedule_to (aTHX_ ta, next);
		1820	break;
1654	}	1821	}
1655	}	1822	}
1656	else	1823	else
1657	{	1824	{
1658	/* nothing to schedule: call the idle handler */	1825	/* nothing to schedule: call the idle handler */
		1826	if (SvROK (sv_idle)
		1827	&& SvOBJECT (SvRV (sv_idle)))
		1828	{
		1829	if (SvRV (sv_idle) == SvRV (coro_current))
		1830	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1831
		1832	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
		1833	api_ready (aTHX_ SvRV (sv_idle));
		1834	--coro_nready;
		1835	}
		1836	else
		1837	{
		1838	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1659	dSP;	1839	dSP;
1660		1840
1661	ENTER;	1841	ENTER;
1662	SAVETMPS;	1842	SAVETMPS;
1663		1843
1664	PUSHMARK (SP);	1844	PUSHMARK (SP);
1665	PUTBACK;	1845	PUTBACK;
1666	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);	1846	call_sv (sv_idle, G_VOID | G_DISCARD);
1667		1847
1668	FREETMPS;	1848	FREETMPS;
1669	LEAVE;	1849	LEAVE;
		1850	}
1670	}	1851	}
1671	}	1852	}
1672	}	1853	}
1673		1854
1674	INLINE void	1855	INLINE void
…		…
1745	static void	1926	static void
1746	api_trace (pTHX_ SV *coro_sv, int flags)	1927	api_trace (pTHX_ SV *coro_sv, int flags)
1747	{	1928	{
1748	struct coro *coro = SvSTATE (coro_sv);	1929	struct coro *coro = SvSTATE (coro_sv);
1749		1930
		1931	if (coro->flags & CF_RUNNING)
		1932	croak ("cannot enable tracing on a running coroutine, caught");
		1933
1750	if (flags & CC_TRACE)	1934	if (flags & CC_TRACE)
1751	{	1935	{
1752	if (!coro->cctx)	1936	if (!coro->cctx)
1753	coro->cctx = cctx_new_run ();	1937	coro->cctx = cctx_new_run ();
1754	else if (!(coro->cctx->flags & CC_TRACE))	1938	else if (!(coro->cctx->flags & CC_TRACE))
1755	croak ("cannot enable tracing on coroutine with custom stack,");	1939	croak ("cannot enable tracing on coroutine with custom stack, caught");
1756		1940
1757	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1941	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1758	}	1942	}
1759	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1943	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1760	{	1944	{
…		…
1763	if (coro->flags & CF_RUNNING)	1947	if (coro->flags & CF_RUNNING)
1764	PL_runops = RUNOPS_DEFAULT;	1948	PL_runops = RUNOPS_DEFAULT;
1765	else	1949	else
1766	coro->slot->runops = RUNOPS_DEFAULT;	1950	coro->slot->runops = RUNOPS_DEFAULT;
1767	}	1951	}
		1952	}
		1953
		1954	static void
		1955	coro_call_on_destroy (pTHX_ struct coro *coro)
		1956	{
		1957	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
		1958	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		1959
		1960	if (on_destroyp)
		1961	{
		1962	AV *on_destroy = (AV *)SvRV (*on_destroyp);
		1963
		1964	while (AvFILLp (on_destroy) >= 0)
		1965	{
		1966	dSP; /* don't disturb outer sp */
		1967	SV *cb = av_pop (on_destroy);
		1968
		1969	PUSHMARK (SP);
		1970
		1971	if (statusp)
		1972	{
		1973	int i;
		1974	AV *status = (AV *)SvRV (*statusp);
		1975	EXTEND (SP, AvFILLp (status) + 1);
		1976
		1977	for (i = 0; i <= AvFILLp (status); ++i)
		1978	PUSHs (AvARRAY (status)[i]);
		1979	}
		1980
		1981	PUTBACK;
		1982	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
		1983	}
		1984	}
		1985	}
		1986
		1987	static void
		1988	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1989	{
		1990	int i;
		1991	HV *hv = (HV *)SvRV (coro_current);
		1992	AV *av = newAV ();
		1993
		1994	/* items are actually not so common, so optimise for this case */
		1995	if (items)
		1996	{
		1997	av_extend (av, items - 1);
		1998
		1999	for (i = 0; i < items; ++i)
		2000	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2001	}
		2002
		2003	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		2004
		2005	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
		2006	api_ready (aTHX_ sv_manager);
		2007
		2008	frame->prepare = prepare_schedule;
		2009	frame->check = slf_check_repeat;
		2010
		2011	/* as a minor optimisation, we could unwind all stacks here */
		2012	/* but that puts extra pressure on pp_slf, and is not worth much */
		2013	/*coro_unwind_stacks (aTHX);*/
1768	}	2014	}
1769		2015
1770	/*****************************************************************************/	2016	/*****************************************************************************/
1771	/* async pool handler */	2017	/* async pool handler */
1772		2018
…		…
1850		2096
1851	static void	2097	static void
1852	coro_rouse_callback (pTHX_ CV *cv)	2098	coro_rouse_callback (pTHX_ CV *cv)
1853	{	2099	{
1854	dXSARGS;	2100	dXSARGS;
1855	SV *data = (SV *)GENSUB_ARG;	2101	SV *data = (SV *)S_GENSUB_ARG;
1856		2102
1857	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2103	if (SvTYPE (SvRV (data)) != SVt_PVAV)
1858	{	2104	{
1859	/* first call, set args */	2105	/* first call, set args */
		2106	SV *coro = SvRV (data);
1860	AV *av = newAV ();	2107	AV *av = newAV ();
1861	SV *coro = SvRV (data);
1862		2108
1863	SvRV_set (data, (SV *)av);	2109	SvRV_set (data, (SV *)av);
1864	api_ready (aTHX_ coro);
1865	SvREFCNT_dec (coro);
1866		2110
1867	/* better take a full copy of the arguments */	2111	/* better take a full copy of the arguments */
1868	while (items--)	2112	while (items--)
1869	av_store (av, items, newSVsv (ST (items)));	2113	av_store (av, items, newSVsv (ST (items)));
		2114
		2115	api_ready (aTHX_ coro);
		2116	SvREFCNT_dec (coro);
1870	}	2117	}
1871		2118
1872	XSRETURN_EMPTY;	2119	XSRETURN_EMPTY;
1873	}	2120	}
1874		2121
…		…
1891		2138
1892	EXTEND (SP, AvFILLp (av) + 1);	2139	EXTEND (SP, AvFILLp (av) + 1);
1893	for (i = 0; i <= AvFILLp (av); ++i)	2140	for (i = 0; i <= AvFILLp (av); ++i)
1894	PUSHs (sv_2mortal (AvARRAY (av)[i]));	2141	PUSHs (sv_2mortal (AvARRAY (av)[i]));
1895		2142
1896	/* we have stolen the elements, so ste length to zero and free */	2143	/* we have stolen the elements, so set length to zero and free */
1897	AvFILLp (av) = -1;	2144	AvFILLp (av) = -1;
1898	av_undef (av);	2145	av_undef (av);
1899		2146
1900	PUTBACK;	2147	PUTBACK;
1901	}	2148	}
…		…
1925	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2172	|| SvTYPE (SvRV (cb)) != SVt_PVCV
1926	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2173	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1927	croak ("Coro::rouse_wait called with illegal callback argument,");	2174	croak ("Coro::rouse_wait called with illegal callback argument,");
1928		2175
1929	{	2176	{
1930	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2177	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1931	SV *data = (SV *)GENSUB_ARG;	2178	SV *data = (SV *)S_GENSUB_ARG;
1932		2179
1933	frame->data = (void *)data;	2180	frame->data = (void *)data;
1934	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2181	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1935	frame->check = slf_check_rouse_wait;	2182	frame->check = slf_check_rouse_wait;
1936	}	2183	}
…		…
1940	coro_new_rouse_cb (pTHX)	2187	coro_new_rouse_cb (pTHX)
1941	{	2188	{
1942	HV *hv = (HV *)SvRV (coro_current);	2189	HV *hv = (HV *)SvRV (coro_current);
1943	struct coro *coro = SvSTATE_hv (hv);	2190	struct coro *coro = SvSTATE_hv (hv);
1944	SV *data = newRV_inc ((SV *)hv);	2191	SV *data = newRV_inc ((SV *)hv);
1945	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2192	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1946		2193
1947	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2194	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1948	SvREFCNT_dec (data); /* magicext increases the refcount */	2195	SvREFCNT_dec (data); /* magicext increases the refcount */
1949		2196
1950	SvREFCNT_dec (coro->rouse_cb);	2197	SvREFCNT_dec (coro->rouse_cb);
…		…
2188	}	2435	}
2189	else	2436	else
2190	slf_argc = 0;	2437	slf_argc = 0;
2191		2438
2192	PL_op->op_ppaddr = pp_slf;	2439	PL_op->op_ppaddr = pp_slf;
2193	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */	2440	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2194		2441
2195	PL_op = (OP *)&slf_restore;	2442	PL_op = (OP *)&slf_restore;
		2443	}
		2444
		2445	/*****************************************************************************/
		2446	/* dynamic wind */
		2447
		2448	static void
		2449	on_enterleave_call (pTHX_ SV *cb)
		2450	{
		2451	dSP;
		2452
		2453	PUSHSTACK;
		2454
		2455	PUSHMARK (SP);
		2456	PUTBACK;
		2457	call_sv (cb, G_VOID | G_DISCARD);
		2458	SPAGAIN;
		2459
		2460	POPSTACK;
		2461	}
		2462
		2463	static SV *
		2464	coro_avp_pop_and_free (pTHX_ AV **avp)
		2465	{
		2466	AV *av = *avp;
		2467	SV *res = av_pop (av);
		2468
		2469	if (AvFILLp (av) < 0)
		2470	{
		2471	*avp = 0;
		2472	SvREFCNT_dec (av);
		2473	}
		2474
		2475	return res;
		2476	}
		2477
		2478	static void
		2479	coro_pop_on_enter (pTHX_ void *coro)
		2480	{
		2481	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
		2482	SvREFCNT_dec (cb);
		2483	}
		2484
		2485	static void
		2486	coro_pop_on_leave (pTHX_ void *coro)
		2487	{
		2488	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
		2489	on_enterleave_call (aTHX_ sv_2mortal (cb));
2196	}	2490	}
2197		2491
2198	/*****************************************************************************/	2492	/*****************************************************************************/
2199	/* PerlIO::cede */	2493	/* PerlIO::cede */
2200		2494
…		…
2274	/* Coro::Semaphore & Coro::Signal */	2568	/* Coro::Semaphore & Coro::Signal */
2275		2569
2276	static SV *	2570	static SV *
2277	coro_waitarray_new (pTHX_ int count)	2571	coro_waitarray_new (pTHX_ int count)
2278	{	2572	{
2279	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2573	/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2280	AV *av = newAV ();	2574	AV *av = newAV ();
2281	SV **ary;	2575	SV **ary;
2282		2576
2283	/* unfortunately, building manually saves memory */	2577	/* unfortunately, building manually saves memory */
2284	Newx (ary, 2, SV *);	2578	Newx (ary, 2, SV *);
2285	AvALLOC (av) = ary;	2579	AvALLOC (av) = ary;
		2580	#if PERL_VERSION_ATLEAST (5,10,0)
2286	/*AvARRAY (av) = ary;*/	2581	AvARRAY (av) = ary;
		2582	#else
2287	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */	2583	/* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
		2584	/* -DDEBUGGING flags this as a bug, despite it perfectly working */
		2585	SvPVX ((SV *)av) = (char *)ary;
		2586	#endif
2288	AvMAX (av) = 1;	2587	AvMAX (av) = 1;
2289	AvFILLp (av) = 0;	2588	AvFILLp (av) = 0;
2290	ary [0] = newSViv (count);	2589	ary [0] = newSViv (count);
2291		2590
2292	return newRV_noinc ((SV *)av);	2591	return newRV_noinc ((SV *)av);
…		…
2421	{	2720	{
2422	if (items >= 2)	2721	if (items >= 2)
2423	{	2722	{
2424	/* callback form */	2723	/* callback form */
2425	AV *av = (AV *)SvRV (arg [0]);	2724	AV *av = (AV *)SvRV (arg [0]);
2426	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2725	SV *cb_cv = s_get_cv_croak (arg [1]);
2427		2726
2428	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));	2727	av_push (av, SvREFCNT_inc_NN (cb_cv));
2429		2728
2430	if (SvIVX (AvARRAY (av)[0]) > 0)	2729	if (SvIVX (AvARRAY (av)[0]) > 0)
2431	coro_semaphore_adjust (aTHX_ av, 0);	2730	coro_semaphore_adjust (aTHX_ av, 0);
2432		2731
2433	frame->prepare = prepare_nop;	2732	frame->prepare = prepare_nop;
…		…
2457	AvARRAY (av)[0] = AvARRAY (av)[1];	2756	AvARRAY (av)[0] = AvARRAY (av)[1];
2458	AvARRAY (av)[1] = cb;	2757	AvARRAY (av)[1] = cb;
2459		2758
2460	cb = av_shift (av);	2759	cb = av_shift (av);
2461		2760
		2761	if (SvTYPE (cb) == SVt_PVCV)
		2762	{
		2763	dSP;
		2764	PUSHMARK (SP);
		2765	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2766	PUTBACK;
		2767	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2768	}
		2769	else
		2770	{
2462	api_ready (aTHX_ cb);	2771	api_ready (aTHX_ cb);
2463	sv_setiv (cb, 0); /* signal waiter */	2772	sv_setiv (cb, 0); /* signal waiter */
		2773	}
		2774
2464	SvREFCNT_dec (cb);	2775	SvREFCNT_dec (cb);
2465		2776
2466	--count;	2777	--count;
2467	}	2778	}
2468	}	2779	}
…		…
2477	static void	2788	static void
2478	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2789	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2479	{	2790	{
2480	AV *av = (AV *)SvRV (arg [0]);	2791	AV *av = (AV *)SvRV (arg [0]);
2481		2792
		2793	if (items >= 2)
		2794	{
		2795	SV *cb_cv = s_get_cv_croak (arg [1]);
		2796	av_push (av, SvREFCNT_inc_NN (cb_cv));
		2797
2482	if (SvIVX (AvARRAY (av)[0]))	2798	if (SvIVX (AvARRAY (av)[0]))
		2799	coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
		2800
		2801	frame->prepare = prepare_nop;
		2802	frame->check = slf_check_nop;
		2803	}
		2804	else if (SvIVX (AvARRAY (av)[0]))
2483	{	2805	{
2484	SvIVX (AvARRAY (av)[0]) = 0;	2806	SvIVX (AvARRAY (av)[0]) = 0;
2485	frame->prepare = prepare_nop;	2807	frame->prepare = prepare_nop;
2486	frame->check = slf_check_nop;	2808	frame->check = slf_check_nop;
2487	}	2809	}
2488	else	2810	else
2489	{	2811	{
2490	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */	2812	SV *waiter = newSVsv (coro_current); /* owned by signal av */
2491		2813
2492	av_push (av, waiter);	2814	av_push (av, waiter);
2493		2815
2494	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */	2816	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2495	frame->prepare = prepare_schedule;	2817	frame->prepare = prepare_schedule;
…		…
2513		2835
2514	static void	2836	static void
2515	coro_aio_callback (pTHX_ CV *cv)	2837	coro_aio_callback (pTHX_ CV *cv)
2516	{	2838	{
2517	dXSARGS;	2839	dXSARGS;
2518	AV *state = (AV *)GENSUB_ARG;	2840	AV *state = (AV *)S_GENSUB_ARG;
2519	SV *coro = av_pop (state);	2841	SV *coro = av_pop (state);
2520	SV *data_sv = newSV (sizeof (struct io_state));	2842	SV *data_sv = newSV (sizeof (struct io_state));
2521		2843
2522	av_extend (state, items - 1);	2844	av_extend (state, items - 1);
2523		2845
…		…
2637		2959
2638	for (i = 0; i < items; ++i)	2960	for (i = 0; i < items; ++i)
2639	PUSHs (arg [i]);	2961	PUSHs (arg [i]);
2640		2962
2641	/* now push the callback closure */	2963	/* now push the callback closure */
2642	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	2964	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2643		2965
2644	/* now call the AIO function - we assume our request is uncancelable */	2966	/* now call the AIO function - we assume our request is uncancelable */
2645	PUTBACK;	2967	PUTBACK;
2646	call_sv ((SV *)req, G_VOID | G_DISCARD);	2968	call_sv ((SV *)req, G_VOID | G_DISCARD);
2647	}	2969	}
…		…
2661		2983
2662	XSRETURN_EMPTY;	2984	XSRETURN_EMPTY;
2663	}	2985	}
2664		2986
2665	/*****************************************************************************/	2987	/*****************************************************************************/
		2988
		2989	#if CORO_CLONE
		2990	# include "clone.c"
		2991	#endif
		2992
		2993	/*****************************************************************************/
		2994
		2995	static SV *
		2996	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		2997	{
		2998	SV *coro_sv;
		2999	struct coro *coro;
		3000	MAGIC *mg;
		3001	HV *hv;
		3002	SV *cb;
		3003	int i;
		3004
		3005	if (argc > 0)
		3006	{
		3007	cb = s_get_cv_croak (argv [0]);
		3008
		3009	if (!is_coro)
		3010	{
		3011	if (CvISXSUB (cb))
		3012	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3013
		3014	if (!CvROOT (cb))
		3015	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3016	}
		3017	}
		3018
		3019	Newz (0, coro, 1, struct coro);
		3020	coro->args = newAV ();
		3021	coro->flags = CF_NEW;
		3022
		3023	if (coro_first) coro_first->prev = coro;
		3024	coro->next = coro_first;
		3025	coro_first = coro;
		3026
		3027	coro->hv = hv = newHV ();
		3028	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3029	mg->mg_flags |= MGf_DUP;
		3030	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3031
		3032	if (argc > 0)
		3033	{
		3034	av_extend (coro->args, argc + is_coro - 1);
		3035
		3036	if (is_coro)
		3037	{
		3038	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3039	cb = (SV *)cv_coro_run;
		3040	}
		3041
		3042	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3043
		3044	for (i = 1; i < argc; i++)
		3045	av_push (coro->args, newSVsv (argv [i]));
		3046	}
		3047
		3048	return coro_sv;
		3049	}
2666		3050
2667	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3051	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2668		3052
2669	PROTOTYPES: DISABLE	3053	PROTOTYPES: DISABLE
2670		3054
…		…
2675	coro_thx = PERL_GET_CONTEXT;	3059	coro_thx = PERL_GET_CONTEXT;
2676	# endif	3060	# endif
2677	#endif	3061	#endif
2678	BOOT_PAGESIZE;	3062	BOOT_PAGESIZE;
2679		3063
		3064	cctx_current = cctx_new_empty ();
		3065
2680	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	3066	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2681	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	3067	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2682		3068
2683	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;	3069	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2684	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;	3070	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
…		…
2703		3089
2704	{	3090	{
2705	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));	3091	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2706		3092
2707	if (!PL_custom_op_names) PL_custom_op_names = newHV ();	3093	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2708	hv_store_ent (PL_custom_op_names, slf,	3094	hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2709	newSVpv ("coro_slf", 0), 0);
2710		3095
2711	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();	3096	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2712	hv_store_ent (PL_custom_op_descs, slf,	3097	hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2713	newSVpv ("coro schedule like function", 0), 0);
2714	}	3098	}
2715		3099
2716	coroapi.ver = CORO_API_VERSION;	3100	coroapi.ver = CORO_API_VERSION;
2717	coroapi.rev = CORO_API_REVISION;	3101	coroapi.rev = CORO_API_REVISION;
2718		3102
…		…
2730		3114
2731	if (!svp) croak ("Time::HiRes is required");	3115	if (!svp) croak ("Time::HiRes is required");
2732	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");	3116	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2733		3117
2734	nvtime = INT2PTR (double (*)(), SvIV (*svp));	3118	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		3119
		3120	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		3121	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2735	}	3122	}
2736		3123
2737	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	3124	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2738	}	3125	}
2739		3126
2740	SV *	3127	SV *
2741	new (char *klass, ...)	3128	new (SV *klass, ...)
2742	ALIAS:	3129	ALIAS:
2743	Coro::new = 1	3130	Coro::new = 1
2744	CODE:	3131	CODE:
2745	{	3132	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2746	struct coro *coro;	3133	OUTPUT:
2747	MAGIC *mg;
2748	HV *hv;
2749	CV *cb;
2750	int i;
2751
2752	if (items > 1)
2753	{
2754	cb = coro_sv_2cv (aTHX_ ST (1));
2755
2756	if (!ix)
2757	{
2758	if (CvISXSUB (cb))
2759	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2760
2761	if (!CvROOT (cb))
2762	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2763	}
2764	}
2765
2766	Newz (0, coro, 1, struct coro);
2767	coro->args = newAV ();
2768	coro->flags = CF_NEW;
2769
2770	if (coro_first) coro_first->prev = coro;
2771	coro->next = coro_first;
2772	coro_first = coro;
2773
2774	coro->hv = hv = newHV ();
2775	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2776	mg->mg_flags |= MGf_DUP;
2777	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2778
2779	if (items > 1)
2780	{
2781	av_extend (coro->args, items - 1 + ix - 1);
2782
2783	if (ix)
2784	{
2785	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2786	cb = cv_coro_run;
2787	}
2788
2789	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2790
2791	for (i = 2; i < items; i++)
2792	av_push (coro->args, newSVsv (ST (i)));
2793	}
2794	}
2795	OUTPUT:
2796	RETVAL	3134	RETVAL
2797		3135
2798	void	3136	void
2799	transfer (...)	3137	transfer (...)
2800	PROTOTYPE: $$	3138	PROTOTYPE: $$
…		…
2811	void	3149	void
2812	_exit (int code)	3150	_exit (int code)
2813	PROTOTYPE: $	3151	PROTOTYPE: $
2814	CODE:	3152	CODE:
2815	_exit (code);	3153	_exit (code);
		3154
		3155	SV *
		3156	clone (Coro::State coro)
		3157	CODE:
		3158	{
		3159	#if CORO_CLONE
		3160	struct coro *ncoro = coro_clone (aTHX_ coro);
		3161	MAGIC *mg;
		3162	/* TODO: too much duplication */
		3163	ncoro->hv = newHV ();
		3164	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
		3165	mg->mg_flags |= MGf_DUP;
		3166	RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
		3167	#else
		3168	croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
		3169	#endif
		3170	}
		3171	OUTPUT:
		3172	RETVAL
2816		3173
2817	int	3174	int
2818	cctx_stacksize (int new_stacksize = 0)	3175	cctx_stacksize (int new_stacksize = 0)
2819	PROTOTYPE: ;$	3176	PROTOTYPE: ;$
2820	CODE:	3177	CODE:
…		…
2870	eval = 1	3227	eval = 1
2871	CODE:	3228	CODE:
2872	{	3229	{
2873	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3230	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2874	{	3231	{
2875	struct coro temp;	3232	struct coro *current = SvSTATE_current;
2876		3233
2877	if (!(coro->flags & CF_RUNNING))	3234	if (current != coro)
2878	{	3235	{
2879	PUTBACK;	3236	PUTBACK;
2880	save_perl (aTHX_ &temp);	3237	save_perl (aTHX_ current);
2881	load_perl (aTHX_ coro);	3238	load_perl (aTHX_ coro);
		3239	SPAGAIN;
2882	}	3240	}
2883		3241
2884	{
2885	dSP;
2886	ENTER;
2887	SAVETMPS;
2888	PUTBACK;
2889	PUSHSTACK;	3242	PUSHSTACK;
		3243
2890	PUSHMARK (SP);	3244	PUSHMARK (SP);
		3245	PUTBACK;
2891		3246
2892	if (ix)	3247	if (ix)
2893	eval_sv (coderef, 0);	3248	eval_sv (coderef, 0);
2894	else	3249	else
2895	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	3250	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2896		3251
2897	POPSTACK;	3252	POPSTACK;
2898	SPAGAIN;	3253	SPAGAIN;
2899	FREETMPS;
2900	LEAVE;
2901	PUTBACK;
2902	}
2903		3254
2904	if (!(coro->flags & CF_RUNNING))	3255	if (current != coro)
2905	{	3256	{
		3257	PUTBACK;
2906	save_perl (aTHX_ coro);	3258	save_perl (aTHX_ coro);
2907	load_perl (aTHX_ &temp);	3259	load_perl (aTHX_ current);
2908	SPAGAIN;	3260	SPAGAIN;
2909	}	3261	}
2910	}	3262	}
2911	}	3263	}
2912		3264
…		…
2916	ALIAS:	3268	ALIAS:
2917	is_ready = CF_READY	3269	is_ready = CF_READY
2918	is_running = CF_RUNNING	3270	is_running = CF_RUNNING
2919	is_new = CF_NEW	3271	is_new = CF_NEW
2920	is_destroyed = CF_DESTROYED	3272	is_destroyed = CF_DESTROYED
		3273	is_suspended = CF_SUSPENDED
2921	CODE:	3274	CODE:
2922	RETVAL = boolSV (coro->flags & ix);	3275	RETVAL = boolSV (coro->flags & ix);
2923	OUTPUT:	3276	OUTPUT:
2924	RETVAL	3277	RETVAL
2925		3278
…		…
2929	CODE:	3282	CODE:
2930	{	3283	{
2931	struct coro *current = SvSTATE_current;	3284	struct coro *current = SvSTATE_current;
2932	SV **throwp = self == current ? &CORO_THROW : &self->except;	3285	SV **throwp = self == current ? &CORO_THROW : &self->except;
2933	SvREFCNT_dec (*throwp);	3286	SvREFCNT_dec (*throwp);
		3287	SvGETMAGIC (throw);
2934	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3288	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
2935	}	3289	}
2936		3290
2937	void	3291	void
2938	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3292	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
…		…
2941		3295
2942	SV *	3296	SV *
2943	has_cctx (Coro::State coro)	3297	has_cctx (Coro::State coro)
2944	PROTOTYPE: $	3298	PROTOTYPE: $
2945	CODE:	3299	CODE:
2946	RETVAL = boolSV (!!coro->cctx);	3300	/* maybe manage the running flag differently */
		3301	RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2947	OUTPUT:	3302	OUTPUT:
2948	RETVAL	3303	RETVAL
2949		3304
2950	int	3305	int
2951	is_traced (Coro::State coro)	3306	is_traced (Coro::State coro)
…		…
2971		3326
2972	void	3327	void
2973	force_cctx ()	3328	force_cctx ()
2974	PROTOTYPE:	3329	PROTOTYPE:
2975	CODE:	3330	CODE:
2976	SvSTATE_current->cctx->idle_sp = 0;	3331	cctx_current->idle_sp = 0;
2977		3332
2978	void	3333	void
2979	swap_defsv (Coro::State self)	3334	swap_defsv (Coro::State self)
2980	PROTOTYPE: $	3335	PROTOTYPE: $
2981	ALIAS:	3336	ALIAS:
…		…
2989	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	3344	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2990		3345
2991	SV *tmp = *src; *src = *dst; *dst = tmp;	3346	SV *tmp = *src; *src = *dst; *dst = tmp;
2992	}	3347	}
2993		3348
		3349	void
		3350	cancel (Coro::State self)
		3351	CODE:
		3352	coro_state_destroy (aTHX_ self);
		3353	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
		3354
		3355
		3356	SV *
		3357	enable_times (int enabled = enable_times)
		3358	CODE:
		3359	{
		3360	RETVAL = boolSV (enable_times);
		3361
		3362	if (enabled != enable_times)
		3363	{
		3364	enable_times = enabled;
		3365
		3366	coro_times_update ();
		3367	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3368	}
		3369	}
		3370	OUTPUT:
		3371	RETVAL
		3372
		3373	void
		3374	times (Coro::State self)
		3375	PPCODE:
		3376	{
		3377	struct coro *current = SvSTATE (coro_current);
		3378
		3379	if (expect_false (current == self))
		3380	{
		3381	coro_times_update ();
		3382	coro_times_add (SvSTATE (coro_current));
		3383	}
		3384
		3385	EXTEND (SP, 2);
		3386	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3387	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3388
		3389	if (expect_false (current == self))
		3390	coro_times_sub (SvSTATE (coro_current));
		3391	}
		3392
		3393	void
		3394	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3395	CODE:
		3396	{
		3397	struct coro *current = SvSTATE_current;
		3398
		3399	if (current == coro)
		3400	SWAP_SVS (current);
		3401
		3402	if (!coro->swap_sv)
		3403	coro->swap_sv = newAV ();
		3404
		3405	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3406	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3407
		3408	if (current == coro)
		3409	SWAP_SVS (current);
		3410	}
		3411
2994		3412
2995	MODULE = Coro::State PACKAGE = Coro	3413	MODULE = Coro::State PACKAGE = Coro
2996		3414
2997	BOOT:	3415	BOOT:
2998	{	3416	{
2999	int i;
3000
3001	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3002	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3417	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3003	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3418	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3004	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);	3419	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3005	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);	3420	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3006	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3421	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
		3422	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		3423	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
		3424	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3425	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3007		3426
3008	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3427	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3009	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3428	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3010	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3429	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3011	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3430	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3012		3431
3013	coro_stash = gv_stashpv ("Coro", TRUE);	3432	coro_stash = gv_stashpv ("Coro", TRUE);
3014		3433
3015	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3434	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3016	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3435	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3017	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	3436	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3018	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	3437	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3019	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	3438	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3020	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	3439	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3021
3022	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3023	coro_ready[i] = newAV ();
3024		3440
3025	{	3441	{
3026	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3442	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3027		3443
3028	coroapi.schedule = api_schedule;	3444	coroapi.schedule = api_schedule;
…		…
3038	sv_setiv (sv, (IV)&coroapi);	3454	sv_setiv (sv, (IV)&coroapi);
3039	SvREADONLY_on (sv);	3455	SvREADONLY_on (sv);
3040	}	3456	}
3041	}	3457	}
3042		3458
		3459	SV *
		3460	async (...)
		3461	PROTOTYPE: &@
		3462	CODE:
		3463	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3464	api_ready (aTHX_ RETVAL);
		3465	OUTPUT:
		3466	RETVAL
		3467
		3468	void
		3469	terminate (...)
		3470	CODE:
		3471	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3472
3043	void	3473	void
3044	schedule (...)	3474	schedule (...)
3045	CODE:	3475	CODE:
3046	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3476	CORO_EXECUTE_SLF_XS (slf_init_schedule);
3047		3477
…		…
3075	void	3505	void
3076	_set_readyhook (SV *hook)	3506	_set_readyhook (SV *hook)
3077	PROTOTYPE: $	3507	PROTOTYPE: $
3078	CODE:	3508	CODE:
3079	SvREFCNT_dec (coro_readyhook);	3509	SvREFCNT_dec (coro_readyhook);
		3510	SvGETMAGIC (hook);
		3511	if (SvOK (hook))
		3512	{
3080	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3513	coro_readyhook = newSVsv (hook);
		3514	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3515	}
		3516	else
		3517	{
		3518	coro_readyhook = 0;
		3519	CORO_READYHOOK = 0;
		3520	}
3081		3521
3082	int	3522	int
3083	prio (Coro::State coro, int newprio = 0)	3523	prio (Coro::State coro, int newprio = 0)
3084	PROTOTYPE: $;$	3524	PROTOTYPE: $;$
3085	ALIAS:	3525	ALIAS:
…		…
3091	if (items > 1)	3531	if (items > 1)
3092	{	3532	{
3093	if (ix)	3533	if (ix)
3094	newprio = coro->prio - newprio;	3534	newprio = coro->prio - newprio;
3095		3535
3096	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3536	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3097	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3537	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3098		3538
3099	coro->prio = newprio;	3539	coro->prio = newprio;
3100	}	3540	}
3101	}	3541	}
3102	OUTPUT:	3542	OUTPUT:
…		…
3117	RETVAL = coro_nready;	3557	RETVAL = coro_nready;
3118	OUTPUT:	3558	OUTPUT:
3119	RETVAL	3559	RETVAL
3120		3560
3121	void	3561	void
		3562	suspend (Coro::State self)
		3563	PROTOTYPE: $
		3564	CODE:
		3565	self->flags |= CF_SUSPENDED;
		3566
		3567	void
		3568	resume (Coro::State self)
		3569	PROTOTYPE: $
		3570	CODE:
		3571	self->flags &= ~CF_SUSPENDED;
		3572
		3573	void
3122	_pool_handler (...)	3574	_pool_handler (...)
3123	CODE:	3575	CODE:
3124	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);	3576	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3125		3577
3126	void	3578	void
…		…
3137	for (i = 1; i < items; ++i)	3589	for (i = 1; i < items; ++i)
3138	av_push (av, SvREFCNT_inc_NN (ST (i)));	3590	av_push (av, SvREFCNT_inc_NN (ST (i)));
3139		3591
3140	if ((SV *)hv == &PL_sv_undef)	3592	if ((SV *)hv == &PL_sv_undef)
3141	{	3593	{
3142	PUSHMARK (SP);	3594	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3143	EXTEND (SP, 2);
3144	PUSHs (sv_Coro);
3145	PUSHs ((SV *)cv_pool_handler);
3146	PUTBACK;
3147	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3148	SPAGAIN;
3149
3150	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3595	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3596	SvREFCNT_dec (sv);
3151	}	3597	}
3152		3598
3153	{	3599	{
3154	struct coro *coro = SvSTATE_hv (hv);	3600	struct coro *coro = SvSTATE_hv (hv);
3155		3601
…		…
3179	rouse_wait (...)	3625	rouse_wait (...)
3180	PROTOTYPE: ;$	3626	PROTOTYPE: ;$
3181	PPCODE:	3627	PPCODE:
3182	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);	3628	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3183		3629
		3630	void
		3631	on_enter (SV *block)
		3632	ALIAS:
		3633	on_leave = 1
		3634	PROTOTYPE: &
		3635	CODE:
		3636	{
		3637	struct coro *coro = SvSTATE_current;
		3638	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
		3639
		3640	block = s_get_cv_croak (block);
		3641
		3642	if (!*avp)
		3643	*avp = newAV ();
		3644
		3645	av_push (*avp, SvREFCNT_inc (block));
		3646
		3647	if (!ix)
		3648	on_enterleave_call (aTHX_ block);
		3649
		3650	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3651	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
		3652	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3653	}
		3654
3184		3655
3185	MODULE = Coro::State PACKAGE = PerlIO::cede	3656	MODULE = Coro::State PACKAGE = PerlIO::cede
3186		3657
3187	BOOT:	3658	BOOT:
3188	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3659	PerlIO_define_layer (aTHX_ &PerlIO_cede);
…		…
3191	MODULE = Coro::State PACKAGE = Coro::Semaphore	3662	MODULE = Coro::State PACKAGE = Coro::Semaphore
3192		3663
3193	SV *	3664	SV *
3194	new (SV *klass, SV *count = 0)	3665	new (SV *klass, SV *count = 0)
3195	CODE:	3666	CODE:
		3667	{
		3668	int semcnt = 1;
		3669
		3670	if (count)
		3671	{
		3672	SvGETMAGIC (count);
		3673
		3674	if (SvOK (count))
		3675	semcnt = SvIV (count);
		3676	}
		3677
3196	RETVAL = sv_bless (	3678	RETVAL = sv_bless (
3197	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),	3679	coro_waitarray_new (aTHX_ semcnt),
3198	GvSTASH (CvGV (cv))	3680	GvSTASH (CvGV (cv))
3199	);	3681	);
		3682	}
3200	OUTPUT:	3683	OUTPUT:
3201	RETVAL	3684	RETVAL
3202		3685
3203	# helper for Coro::Channel	3686	# helper for Coro::Channel and others
3204	SV *	3687	SV *
3205	_alloc (int count)	3688	_alloc (int count)
3206	CODE:	3689	CODE:
3207	RETVAL = coro_waitarray_new (aTHX_ count);	3690	RETVAL = coro_waitarray_new (aTHX_ count);
3208	OUTPUT:	3691	OUTPUT:
…		…
3266	for (i = 1; i <= wcount; ++i)	3749	for (i = 1; i <= wcount; ++i)
3267	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));	3750	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3268	}	3751	}
3269	}	3752	}
3270		3753
		3754	MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
		3755
		3756	void
		3757	_may_delete (SV *sem, int count, int extra_refs)
		3758	PPCODE:
		3759	{
		3760	AV *av = (AV *)SvRV (sem);
		3761
		3762	if (SvREFCNT ((SV *)av) == 1 + extra_refs
		3763	&& AvFILLp (av) == 0 /* no waiters, just count */
		3764	&& SvIV (AvARRAY (av)[0]) == count)
		3765	XSRETURN_YES;
		3766
		3767	XSRETURN_NO;
		3768	}
		3769
3271	MODULE = Coro::State PACKAGE = Coro::Signal	3770	MODULE = Coro::State PACKAGE = Coro::Signal
3272		3771
3273	SV *	3772	SV *
3274	new (SV *klass)	3773	new (SV *klass)
3275	CODE:	3774	CODE:
…		…
3346		3845
3347	void	3846	void
3348	_register (char *target, char *proto, SV *req)	3847	_register (char *target, char *proto, SV *req)
3349	CODE:	3848	CODE:
3350	{	3849	{
3351	CV *req_cv = coro_sv_2cv (aTHX_ req);	3850	SV *req_cv = s_get_cv_croak (req);
3352	/* newXSproto doesn't return the CV on 5.8 */	3851	/* newXSproto doesn't return the CV on 5.8 */
3353	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3852	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3354	sv_setpv ((SV *)slf_cv, proto);	3853	sv_setpv ((SV *)slf_cv, proto);
3355	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3854	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3356	}	3855	}
3357		3856
		3857	MODULE = Coro::State PACKAGE = Coro::Select
		3858
		3859	void
		3860	patch_pp_sselect ()
		3861	CODE:
		3862	if (!coro_old_pp_sselect)
		3863	{
		3864	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		3865	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		3866	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		3867	}
		3868
		3869	void
		3870	unpatch_pp_sselect ()
		3871	CODE:
		3872	if (coro_old_pp_sselect)
		3873	{
		3874	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		3875	coro_old_pp_sselect = 0;
		3876	}
		3877
		3878

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