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Comparing Coro/Coro/State.xs (file contents):
Revision 1.344 by root, Mon Dec 15 19:39:40 2008 UTC vs.
Revision 1.382 by root, Thu Feb 10 08:06:27 2011 UTC

		1	/* this works around a bug in mingw32 providing a non-working setjmp */
		2	#define USE_NO_MINGW_SETJMP_TWO_ARGS
		3
		4	#define NDEBUG 1
		5
1	#include "libcoro/coro.c"	6	#include "libcoro/coro.c"
2		7
3	#define PERL_NO_GET_CONTEXT	8	#define PERL_NO_GET_CONTEXT
4	#define PERL_EXT	9	#define PERL_EXT
5		10
6	#include "EXTERN.h"	11	#include "EXTERN.h"
7	#include "perl.h"	12	#include "perl.h"
8	#include "XSUB.h"	13	#include "XSUB.h"
9	#include "perliol.h"	14	#include "perliol.h"
10		15
11	#include "patchlevel.h"	16	#include "schmorp.h"
12		17
13	#include <stdio.h>	18	#include <stdio.h>
14	#include <errno.h>	19	#include <errno.h>
15	#include <assert.h>	20	#include <assert.h>
		21
		22	#ifndef SVs_PADSTALE
		23	# define SVs_PADSTALE 0
		24	#endif
16		25
17	#ifdef WIN32	26	#ifdef WIN32
18	# undef setjmp	27	# undef setjmp
19	# undef longjmp	28	# undef longjmp
20	# undef _exit	29	# undef _exit
…		…
51	#endif	60	#endif
52		61
53	/* the maximum number of idle cctx that will be pooled */	62	/* the maximum number of idle cctx that will be pooled */
54	static int cctx_max_idle = 4;	63	static int cctx_max_idle = 4;
55		64
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	#ifndef Newx
107	# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108	#endif
109
110	/* 5.8.7 */
111	#ifndef SvRV_set
112	# define SvRV_set(s,v) SvRV(s) = (v)
113	#endif
114
115	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	65	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116	# undef CORO_STACKGUARD	66	# undef CORO_STACKGUARD
117	#endif	67	#endif
118		68
119	#ifndef CORO_STACKGUARD	69	#ifndef CORO_STACKGUARD
…		…
137		87
138	#define IN_DESTRUCT PL_dirty	88	#define IN_DESTRUCT PL_dirty
139		89
140	#if __GNUC__ >= 3	90	#if __GNUC__ >= 3
141	# define attribute(x) __attribute__(x)	91	# define attribute(x) __attribute__(x)
142	# define expect(expr,value) __builtin_expect ((expr),(value))	92	# define expect(expr,value) __builtin_expect ((expr), (value))
143	# define INLINE static inline	93	# define INLINE static inline
144	#else	94	#else
145	# define attribute(x)	95	# define attribute(x)
146	# define expect(expr,value) (expr)	96	# define expect(expr,value) (expr)
147	# define INLINE static	97	# define INLINE static
…		…
159	# if CORO_PTHREAD	109	# if CORO_PTHREAD
160	static void *coro_thx;	110	static void *coro_thx;
161	# endif	111	# endif
162	#endif	112	#endif
163		113
		114	#ifdef __linux
		115	# include <time.h> /* for timespec */
		116	# include <syscall.h> /* for SYS_* */
		117	# ifdef SYS_clock_gettime
		118	# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		119	# define CORO_CLOCK_MONOTONIC 1
		120	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
		121	# endif
		122	#endif
		123
164	static double (*nvtime)(); /* so why doesn't it take void? */	124	static double (*nvtime)(); /* so why doesn't it take void? */
		125	static void (*u2time)(pTHX_ UV ret[2]);
165		126
166	/* we hijack an hopefully unused CV flag for our purposes */	127	/* we hijack an hopefully unused CV flag for our purposes */
167	#define CVf_SLF 0x4000	128	#define CVf_SLF 0x4000
168	static OP *pp_slf (pTHX);	129	static OP *pp_slf (pTHX);
169		130
…		…
190	static SV *sv_pool_size;	151	static SV *sv_pool_size;
191	static SV *sv_async_pool_idle; /* description string */	152	static SV *sv_async_pool_idle; /* description string */
192	static AV *av_async_pool; /* idle pool */	153	static AV *av_async_pool; /* idle pool */
193	static SV *sv_Coro; /* class string */	154	static SV *sv_Coro; /* class string */
194	static CV *cv_pool_handler;	155	static CV *cv_pool_handler;
195	static CV *cv_coro_state_new;
196		156
197	/* Coro::AnyEvent */	157	/* Coro::AnyEvent */
198	static SV *sv_activity;	158	static SV *sv_activity;
		159
		160	/* enable processtime/realtime profiling */
		161	static char enable_times;
		162	typedef U32 coro_ts[2];
		163	static coro_ts time_real, time_cpu;
		164	static char times_valid;
199		165
200	static struct coro_cctx *cctx_first;	166	static struct coro_cctx *cctx_first;
201	static int cctx_count, cctx_idle;	167	static int cctx_count, cctx_idle;
202		168
203	enum {	169	enum {
…		…
261	/* this is a structure representing a perl-level coroutine */	227	/* this is a structure representing a perl-level coroutine */
262	struct coro {	228	struct coro {
263	/* the C coroutine allocated to this perl coroutine, if any */	229	/* the C coroutine allocated to this perl coroutine, if any */
264	coro_cctx *cctx;	230	coro_cctx *cctx;
265		231
		232	/* ready queue */
		233	struct coro *next_ready;
		234
266	/* state data */	235	/* state data */
267	struct CoroSLF slf_frame; /* saved slf frame */	236	struct CoroSLF slf_frame; /* saved slf frame */
268	AV *mainstack;	237	AV *mainstack;
269	perl_slots *slot; /* basically the saved sp */	238	perl_slots *slot; /* basically the saved sp */
270		239
…		…
290		259
291	/* on_enter/on_leave */	260	/* on_enter/on_leave */
292	AV *on_enter;	261	AV *on_enter;
293	AV *on_leave;	262	AV *on_leave;
294		263
		264	/* swap_sv */
		265	AV *swap_sv;
		266
		267	/* times */
		268	coro_ts t_cpu, t_real;
		269
295	/* linked list */	270	/* linked list */
296	struct coro *next, *prev;	271	struct coro *next, *prev;
297	};	272	};
298		273
299	typedef struct coro *Coro__State;	274	typedef struct coro *Coro__State;
…		…
304	/* the mainr easonw e don't support windows process emulation */	279	/* the mainr easonw e don't support windows process emulation */
305	static struct CoroSLF slf_frame; /* the current slf frame */	280	static struct CoroSLF slf_frame; /* the current slf frame */
306		281
307	/** Coro ********************************************************************/	282	/** Coro ********************************************************************/
308		283
309	#define PRIO_MAX 3	284	#define CORO_PRIO_MAX 3
310	#define PRIO_HIGH 1	285	#define CORO_PRIO_HIGH 1
311	#define PRIO_NORMAL 0	286	#define CORO_PRIO_NORMAL 0
312	#define PRIO_LOW -1	287	#define CORO_PRIO_LOW -1
313	#define PRIO_IDLE -3	288	#define CORO_PRIO_IDLE -3
314	#define PRIO_MIN -4	289	#define CORO_PRIO_MIN -4
315		290
316	/* for Coro.pm */	291	/* for Coro.pm */
317	static SV *coro_current;	292	static SV *coro_current;
318	static SV *coro_readyhook;	293	static SV *coro_readyhook;
319	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	294	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
320	static CV *cv_coro_run, *cv_coro_terminate;	295	static CV *cv_coro_run, *cv_coro_terminate;
321	static struct coro *coro_first;	296	static struct coro *coro_first;
322	#define coro_nready coroapi.nready	297	#define coro_nready coroapi.nready
		298
		299	/** Coro::Select ************************************************************/
		300
		301	static OP *(*coro_old_pp_sselect) (pTHX);
		302	static SV *coro_select_select;
		303
		304	/* horrible hack, but if it works... */
		305	static OP *
		306	coro_pp_sselect (pTHX)
		307	{
		308	dSP;
		309	PUSHMARK (SP - 4); /* fake argument list */
		310	XPUSHs (coro_select_select);
		311	PUTBACK;
		312
		313	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		314	PL_op->op_flags |= OPf_STACKED;
		315	PL_op->op_private = 0;
		316	return PL_ppaddr [OP_ENTERSUB](aTHX);
		317	}
323		318
324	/** lowlevel stuff **********************************************************/	319	/** lowlevel stuff **********************************************************/
325		320
326	static SV *	321	static SV *
327	coro_get_sv (pTHX_ const char *name, int create)	322	coro_get_sv (pTHX_ const char *name, int create)
…		…
351	get_hv (name, create);	346	get_hv (name, create);
352	#endif	347	#endif
353	return get_hv (name, create);	348	return get_hv (name, create);
354	}	349	}
355		350
356	/* may croak */	351	INLINE void
357	INLINE CV *	352	coro_times_update ()
358	coro_sv_2cv (pTHX_ SV *sv)
359	{	353	{
360	HV *st;	354	#ifdef coro_clock_gettime
361	GV *gvp;	355	struct timespec ts;
362	CV *cv = sv_2cv (sv, &st, &gvp, 0);
363		356
364	if (!cv)	357	ts.tv_sec = ts.tv_nsec = 0;
365	croak ("code reference expected");	358	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		359	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
366		360
367	return cv;	361	ts.tv_sec = ts.tv_nsec = 0;
		362	coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
		363	time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
		364	#else
		365	dTHX;
		366	UV tv[2];
		367
		368	u2time (aTHX_ tv);
		369	time_real [0] = tv [0];
		370	time_real [1] = tv [1] * 1000;
		371	#endif
		372	}
		373
		374	INLINE void
		375	coro_times_add (struct coro *c)
		376	{
		377	c->t_real [1] += time_real [1];
		378	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
		379	c->t_real [0] += time_real [0];
		380
		381	c->t_cpu [1] += time_cpu [1];
		382	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
		383	c->t_cpu [0] += time_cpu [0];
		384	}
		385
		386	INLINE void
		387	coro_times_sub (struct coro *c)
		388	{
		389	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
		390	c->t_real [1] -= time_real [1];
		391	c->t_real [0] -= time_real [0];
		392
		393	if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
		394	c->t_cpu [1] -= time_cpu [1];
		395	c->t_cpu [0] -= time_cpu [0];
368	}	396	}
369		397
370	/*****************************************************************************/	398	/*****************************************************************************/
371	/* magic glue */	399	/* magic glue */
372		400
…		…
472	static int	500	static int
473	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)	501	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
474	{	502	{
475	AV *padlist;	503	AV *padlist;
476	AV *av = (AV *)mg->mg_obj;	504	AV *av = (AV *)mg->mg_obj;
		505
		506	/* perl manages to free our internal AV and _then_ call us */
		507	if (IN_DESTRUCT)
		508	return 0;
477		509
478	/* casting is fun. */	510	/* casting is fun. */
479	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	511	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
480	free_padlist (aTHX_ padlist);	512	free_padlist (aTHX_ padlist);
481		513
…		…
530	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	562	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
531	}	563	}
532		564
533	/** load & save, init *******************************************************/	565	/** load & save, init *******************************************************/
534		566
		567	/* swap sv heads, at least logically */
		568	static void
		569	swap_svs (pTHX_ Coro__State c)
		570	{
		571	int i;
		572
		573	for (i = 0; i <= AvFILLp (c->swap_sv); )
		574	{
		575	SV *a = AvARRAY (c->swap_sv)[i++];
		576	SV *b = AvARRAY (c->swap_sv)[i++];
		577
		578	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		579	SV tmp;
		580
		581	/* swap sv_any */
		582	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		583
		584	/* swap sv_flags */
		585	SvFLAGS (&tmp) = SvFLAGS (a);
		586	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		587	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		588
		589	#if PERL_VERSION_ATLEAST (5,10,0)
		590	/* perl 5.10 complicates this _quite_ a bit, but it also is
		591	* is much faster, so no quarrels here. alternatively, we could
		592	* sv_upgrade to avoid this.
		593	*/
		594	{
		595	/* swap sv_u */
		596	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		597
		598	/* if SvANY points to the head, we need to adjust the pointers,
		599	* as the pointer for a still points to b, and maybe vice versa.
		600	*/
		601	#define svany_in_head(type) \
		602	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
		603
		604	if (svany_in_head (SvTYPE (a)))
		605	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		606
		607	if (svany_in_head (SvTYPE (b)))
		608	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		609	}
		610	#endif
		611	}
		612	}
		613
		614	#define SWAP_SVS(coro) \
		615	if (expect_false ((coro)->swap_sv)) \
		616	swap_svs (aTHX_ (coro))
		617
535	static void	618	static void
536	on_enterleave_call (pTHX_ SV *cb);	619	on_enterleave_call (pTHX_ SV *cb);
537		620
538	static void	621	static void
539	load_perl (pTHX_ Coro__State c)	622	load_perl (pTHX_ Coro__State c)
…		…
570	}	653	}
571		654
572	slf_frame = c->slf_frame;	655	slf_frame = c->slf_frame;
573	CORO_THROW = c->except;	656	CORO_THROW = c->except;
574		657
		658	if (expect_false (enable_times))
		659	{
		660	if (expect_false (!times_valid))
		661	coro_times_update ();
		662
		663	coro_times_sub (c);
		664	}
		665
575	if (expect_false (c->on_enter))	666	if (expect_false (c->on_enter))
576	{	667	{
577	int i;	668	int i;
578		669
579	for (i = 0; i <= AvFILLp (c->on_enter); ++i)	670	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
580	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);	671	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
581	}	672	}
		673
		674	SWAP_SVS (c);
582	}	675	}
583		676
584	static void	677	static void
585	save_perl (pTHX_ Coro__State c)	678	save_perl (pTHX_ Coro__State c)
586	{	679	{
		680	SWAP_SVS (c);
		681
587	if (expect_false (c->on_leave))	682	if (expect_false (c->on_leave))
588	{	683	{
589	int i;	684	int i;
590		685
591	for (i = AvFILLp (c->on_leave); i >= 0; --i)	686	for (i = AvFILLp (c->on_leave); i >= 0; --i)
592	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);	687	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
		688	}
		689
		690	times_valid = 0;
		691
		692	if (expect_false (enable_times))
		693	{
		694	coro_times_update (); times_valid = 1;
		695	coro_times_add (c);
593	}	696	}
594		697
595	c->except = CORO_THROW;	698	c->except = CORO_THROW;
596	c->slf_frame = slf_frame;	699	c->slf_frame = slf_frame;
597		700
…		…
612	{	715	{
613	while (expect_true (cxix >= 0))	716	while (expect_true (cxix >= 0))
614	{	717	{
615	PERL_CONTEXT *cx = &ccstk[cxix--];	718	PERL_CONTEXT *cx = &ccstk[cxix--];
616		719
617	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))	720	if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
618	{	721	{
619	CV *cv = cx->blk_sub.cv;	722	CV *cv = cx->blk_sub.cv;
620		723
621	if (expect_true (CvDEPTH (cv)))	724	if (expect_true (CvDEPTH (cv)))
622	{	725	{
…		…
646	/* we manually unroll here, as usually 2 slots is enough */	749	/* we manually unroll here, as usually 2 slots is enough */
647	if (SLOT_COUNT >= 1) CXINC;	750	if (SLOT_COUNT >= 1) CXINC;
648	if (SLOT_COUNT >= 2) CXINC;	751	if (SLOT_COUNT >= 2) CXINC;
649	if (SLOT_COUNT >= 3) CXINC;	752	if (SLOT_COUNT >= 3) CXINC;
650	{	753	{
651	int i;	754	unsigned int i;
652	for (i = 3; i < SLOT_COUNT; ++i)	755	for (i = 3; i < SLOT_COUNT; ++i)
653	CXINC;	756	CXINC;
654	}	757	}
655	cxstack_ix -= SLOT_COUNT; /* undo allocation */	758	cxstack_ix -= SLOT_COUNT; /* undo allocation */
656		759
…		…
890	slf_check_repeat (pTHX_ struct CoroSLF *frame)	993	slf_check_repeat (pTHX_ struct CoroSLF *frame)
891	{	994	{
892	return 1;	995	return 1;
893	}	996	}
894		997
895	static UNOP coro_setup_op;	998	static UNOP init_perl_op;
896		999
897	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1000	static void NOINLINE /* noinline to keep it out of the transfer fast path */
898	coro_setup (pTHX_ struct coro *coro)	1001	init_perl (pTHX_ struct coro *coro)
899	{	1002	{
900	/*	1003	/*
901	* emulate part of the perl startup here.	1004	* emulate part of the perl startup here.
902	*/	1005	*/
903	coro_init_stacks (aTHX);	1006	coro_init_stacks (aTHX);
…		…
952	*/	1055	*/
953	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1056	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
954	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1057	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
955		1058
956	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1059	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
957	coro_setup_op.op_next = PL_op;	1060	init_perl_op.op_next = PL_op;
958	coro_setup_op.op_type = OP_ENTERSUB;	1061	init_perl_op.op_type = OP_ENTERSUB;
959	coro_setup_op.op_ppaddr = pp_slf;	1062	init_perl_op.op_ppaddr = pp_slf;
960	/* no flags etc. required, as an init function won't be called */	1063	/* no flags etc. required, as an init function won't be called */
961		1064
962	PL_op = (OP *)&coro_setup_op;	1065	PL_op = (OP *)&init_perl_op;
963		1066
964	/* copy throw, in case it was set before coro_setup */	1067	/* copy throw, in case it was set before init_perl */
965	CORO_THROW = coro->except;	1068	CORO_THROW = coro->except;
		1069
		1070	SWAP_SVS (coro);
		1071
		1072	if (expect_false (enable_times))
		1073	{
		1074	coro_times_update ();
		1075	coro_times_sub (coro);
		1076	}
966	}	1077	}
967		1078
968	static void	1079	static void
969	coro_unwind_stacks (pTHX)	1080	coro_unwind_stacks (pTHX)
970	{	1081	{
…		…
985	dounwind (-1);	1096	dounwind (-1);
986	}	1097	}
987	}	1098	}
988		1099
989	static void	1100	static void
990	coro_destruct_perl (pTHX_ struct coro *coro)	1101	destroy_perl (pTHX_ struct coro *coro)
991	{	1102	{
		1103	SV *svf [9];
		1104
		1105	{
		1106	struct coro *current = SvSTATE_current;
		1107
		1108	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
		1109
		1110	save_perl (aTHX_ current);
		1111	load_perl (aTHX_ coro);
		1112
992	coro_unwind_stacks (aTHX);	1113	coro_unwind_stacks (aTHX);
		1114	coro_destruct_stacks (aTHX);
993		1115
994	SvREFCNT_dec (GvSV (PL_defgv));	1116	/* restore swapped sv's */
995	SvREFCNT_dec (GvAV (PL_defgv));	1117	SWAP_SVS (coro);
996	SvREFCNT_dec (GvSV (PL_errgv));
997	SvREFCNT_dec (PL_defoutgv);
998	SvREFCNT_dec (PL_rs);
999	SvREFCNT_dec (GvSV (irsgv));
1000	SvREFCNT_dec (GvHV (PL_hintgv));
1001		1118
1002	SvREFCNT_dec (PL_diehook);	1119	// now save some sv's to be free'd later
1003	SvREFCNT_dec (PL_warnhook);	1120	svf [0] = GvSV (PL_defgv);
		1121	svf [1] = (SV *)GvAV (PL_defgv);
		1122	svf [2] = GvSV (PL_errgv);
		1123	svf [3] = (SV *)PL_defoutgv;
		1124	svf [4] = PL_rs;
		1125	svf [5] = GvSV (irsgv);
		1126	svf [6] = (SV *)GvHV (PL_hintgv);
		1127	svf [7] = PL_diehook;
		1128	svf [8] = PL_warnhook;
		1129	assert (9 == sizeof (svf) / sizeof (*svf));
		1130
		1131	load_perl (aTHX_ current);
1004		1132	}
		1133
		1134	{
		1135	unsigned int i;
		1136
		1137	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
		1138	SvREFCNT_dec (svf [i]);
		1139
1005	SvREFCNT_dec (coro->saved_deffh);	1140	SvREFCNT_dec (coro->saved_deffh);
1006	SvREFCNT_dec (coro->rouse_cb);	1141	SvREFCNT_dec (coro->rouse_cb);
1007	SvREFCNT_dec (coro->invoke_cb);	1142	SvREFCNT_dec (coro->invoke_cb);
1008	SvREFCNT_dec (coro->invoke_av);	1143	SvREFCNT_dec (coro->invoke_av);
1009		1144	}
1010	coro_destruct_stacks (aTHX);
1011	}	1145	}
1012		1146
1013	INLINE void	1147	INLINE void
1014	free_coro_mortal (pTHX)	1148	free_coro_mortal (pTHX)
1015	{	1149	{
…		…
1212	/* somebody or something will hit me for both perl_run and PL_restartop */	1346	/* somebody or something will hit me for both perl_run and PL_restartop */
1213	PL_restartop = PL_op;	1347	PL_restartop = PL_op;
1214	perl_run (PL_curinterp);	1348	perl_run (PL_curinterp);
1215	/*	1349	/*
1216	* Unfortunately, there is no way to get at the return values of the	1350	* Unfortunately, there is no way to get at the return values of the
1217	* coro body here, as perl_run destroys these	1351	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1352	* runtime errors here, as this is just a random interpreter, not a thread.
1218	*/	1353	*/
1219		1354
1220	/*	1355	/*
1221	* If perl-run returns we assume exit() was being called or the coro	1356	* If perl-run returns we assume exit() was being called or the coro
1222	* fell off the end, which seems to be the only valid (non-bug)	1357	* fell off the end, which seems to be the only valid (non-bug)
…		…
1429	if (expect_false (next->flags & CF_NEW))	1564	if (expect_false (next->flags & CF_NEW))
1430	{	1565	{
1431	/* need to start coroutine */	1566	/* need to start coroutine */
1432	next->flags &= ~CF_NEW;	1567	next->flags &= ~CF_NEW;
1433	/* setup coroutine call */	1568	/* setup coroutine call */
1434	coro_setup (aTHX_ next);	1569	init_perl (aTHX_ next);
1435	}	1570	}
1436	else	1571	else
1437	load_perl (aTHX_ next);	1572	load_perl (aTHX_ next);
1438		1573
1439	/* possibly untie and reuse the cctx */	1574	/* possibly untie and reuse the cctx */
…		…
1502		1637
1503	if (coro->mainstack	1638	if (coro->mainstack
1504	&& coro->mainstack != main_mainstack	1639	&& coro->mainstack != main_mainstack
1505	&& coro->slot	1640	&& coro->slot
1506	&& !PL_dirty)	1641	&& !PL_dirty)
1507	{
1508	struct coro *current = SvSTATE_current;
1509
1510	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1511
1512	save_perl (aTHX_ current);
1513	load_perl (aTHX_ coro);
1514
1515	coro_destruct_perl (aTHX_ coro);	1642	destroy_perl (aTHX_ coro);
1516		1643
1517	load_perl (aTHX_ current);	1644	if (coro->next) coro->next->prev = coro->prev;
1518		1645	if (coro->prev) coro->prev->next = coro->next;
1519	coro->slot = 0;	1646	if (coro == coro_first) coro_first = coro->next;
1520	}
1521		1647
1522	cctx_destroy (coro->cctx);	1648	cctx_destroy (coro->cctx);
1523	SvREFCNT_dec (coro->startcv);	1649	SvREFCNT_dec (coro->startcv);
1524	SvREFCNT_dec (coro->args);	1650	SvREFCNT_dec (coro->args);
		1651	SvREFCNT_dec (coro->swap_sv);
1525	SvREFCNT_dec (CORO_THROW);	1652	SvREFCNT_dec (CORO_THROW);
1526
1527	if (coro->next) coro->next->prev = coro->prev;
1528	if (coro->prev) coro->prev->next = coro->next;
1529	if (coro == coro_first) coro_first = coro->next;
1530		1653
1531	return 1;	1654	return 1;
1532	}	1655	}
1533		1656
1534	static int	1657	static int
…		…
1584		1707
1585	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1708	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1586	TRANSFER (ta, 1);	1709	TRANSFER (ta, 1);
1587	}	1710	}
1588		1711
1589	/*****************************************************************************/
1590	/* gensub: simple closure generation utility */
1591
1592	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1593
1594	/* create a closure from XS, returns a code reference */
1595	/* the arg can be accessed via GENSUB_ARG from the callback */
1596	/* the callback must use dXSARGS/XSRETURN */
1597	static SV *
1598	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1599	{
1600	CV *cv = (CV *)newSV (0);
1601
1602	sv_upgrade ((SV *)cv, SVt_PVCV);
1603
1604	CvANON_on (cv);
1605	CvISXSUB_on (cv);
1606	CvXSUB (cv) = xsub;
1607	GENSUB_ARG = arg;
1608
1609	return newRV_noinc ((SV *)cv);
1610	}
1611
1612	/** Coro ********************************************************************/	1712	/** Coro ********************************************************************/
1613		1713
1614	INLINE void	1714	INLINE void
1615	coro_enq (pTHX_ struct coro *coro)	1715	coro_enq (pTHX_ struct coro *coro)
1616	{	1716	{
1617	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));	1717	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1618	}
1619		1718
1620	INLINE SV *	1719	SvREFCNT_inc_NN (coro->hv);
		1720
		1721	coro->next_ready = 0;
		1722	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
		1723	ready [1] = coro;
		1724	}
		1725
		1726	INLINE struct coro *
1621	coro_deq (pTHX)	1727	coro_deq (pTHX)
1622	{	1728	{
1623	int prio;	1729	int prio;
1624		1730
1625	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1731	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1626	if (AvFILLp (coro_ready [prio]) >= 0)	1732	{
1627	return av_shift (coro_ready [prio]);	1733	struct coro **ready = coro_ready [prio];
		1734
		1735	if (ready [0])
		1736	{
		1737	struct coro *coro = ready [0];
		1738	ready [0] = coro->next_ready;
		1739	return coro;
		1740	}
		1741	}
1628		1742
1629	return 0;	1743	return 0;
		1744	}
		1745
		1746	static void
		1747	invoke_sv_ready_hook_helper (void)
		1748	{
		1749	dTHX;
		1750	dSP;
		1751
		1752	ENTER;
		1753	SAVETMPS;
		1754
		1755	PUSHMARK (SP);
		1756	PUTBACK;
		1757	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1758
		1759	FREETMPS;
		1760	LEAVE;
1630	}	1761	}
1631		1762
1632	static int	1763	static int
1633	api_ready (pTHX_ SV *coro_sv)	1764	api_ready (pTHX_ SV *coro_sv)
1634	{	1765	{
1635	struct coro *coro;
1636	SV *sv_hook;
1637	void (*xs_hook)(void);
1638
1639	coro = SvSTATE (coro_sv);	1766	struct coro *coro = SvSTATE (coro_sv);
1640		1767
1641	if (coro->flags & CF_READY)	1768	if (coro->flags & CF_READY)
1642	return 0;	1769	return 0;
1643		1770
1644	coro->flags |= CF_READY;	1771	coro->flags |= CF_READY;
1645		1772
1646	sv_hook = coro_nready ? 0 : coro_readyhook;
1647	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1648
1649	coro_enq (aTHX_ coro);	1773	coro_enq (aTHX_ coro);
1650	++coro_nready;
1651		1774
1652	if (sv_hook)	1775	if (!coro_nready++)
1653	{	1776	if (coroapi.readyhook)
1654	dSP;	1777	coroapi.readyhook ();
1655
1656	ENTER;
1657	SAVETMPS;
1658
1659	PUSHMARK (SP);
1660	PUTBACK;
1661	call_sv (sv_hook, G_VOID | G_DISCARD);
1662
1663	FREETMPS;
1664	LEAVE;
1665	}
1666
1667	if (xs_hook)
1668	xs_hook ();
1669		1778
1670	return 1;	1779	return 1;
1671	}	1780	}
1672		1781
1673	static int	1782	static int
…		…
1696	static void	1805	static void
1697	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1806	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1698	{	1807	{
1699	for (;;)	1808	for (;;)
1700	{	1809	{
1701	SV *next_sv = coro_deq (aTHX);	1810	struct coro *next = coro_deq (aTHX);
1702		1811
1703	if (expect_true (next_sv))	1812	if (expect_true (next))
1704	{	1813	{
1705	struct coro *next = SvSTATE_hv (next_sv);
1706
1707	/* cannot transfer to destroyed coros, skip and look for next */	1814	/* cannot transfer to destroyed coros, skip and look for next */
1708	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))	1815	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1709	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */	1816	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1710	else	1817	else
1711	{	1818	{
1712	next->flags &= ~CF_READY;	1819	next->flags &= ~CF_READY;
1713	--coro_nready;	1820	--coro_nready;
1714		1821
…		…
1720	{	1827	{
1721	/* nothing to schedule: call the idle handler */	1828	/* nothing to schedule: call the idle handler */
1722	if (SvROK (sv_idle)	1829	if (SvROK (sv_idle)
1723	&& SvOBJECT (SvRV (sv_idle)))	1830	&& SvOBJECT (SvRV (sv_idle)))
1724	{	1831	{
		1832	if (SvRV (sv_idle) == SvRV (coro_current))
		1833	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1834
1725	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	1835	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1726	api_ready (aTHX_ SvRV (sv_idle));	1836	api_ready (aTHX_ SvRV (sv_idle));
1727	--coro_nready;	1837	--coro_nready;
1728	}	1838	}
1729	else	1839	else
1730	{	1840	{
		1841	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1731	dSP;	1842	dSP;
1732		1843
1733	ENTER;	1844	ENTER;
1734	SAVETMPS;	1845	SAVETMPS;
1735		1846
…		…
1881	{	1992	{
1882	int i;	1993	int i;
1883	HV *hv = (HV *)SvRV (coro_current);	1994	HV *hv = (HV *)SvRV (coro_current);
1884	AV *av = newAV ();	1995	AV *av = newAV ();
1885		1996
		1997	/* items are actually not so common, so optimise for this case */
		1998	if (items)
		1999	{
1886	av_extend (av, items - 1);	2000	av_extend (av, items - 1);
		2001
1887	for (i = 0; i < items; ++i)	2002	for (i = 0; i < items; ++i)
1888	av_push (av, SvREFCNT_inc_NN (arg [i]));	2003	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2004	}
1889		2005
1890	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2006	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1891		2007
1892	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */	2008	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1893	api_ready (aTHX_ sv_manager);	2009	api_ready (aTHX_ sv_manager);
…		…
1983		2099
1984	static void	2100	static void
1985	coro_rouse_callback (pTHX_ CV *cv)	2101	coro_rouse_callback (pTHX_ CV *cv)
1986	{	2102	{
1987	dXSARGS;	2103	dXSARGS;
1988	SV *data = (SV *)GENSUB_ARG;	2104	SV *data = (SV *)S_GENSUB_ARG;
1989		2105
1990	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2106	if (SvTYPE (SvRV (data)) != SVt_PVAV)
1991	{	2107	{
1992	/* first call, set args */	2108	/* first call, set args */
		2109	SV *coro = SvRV (data);
1993	AV *av = newAV ();	2110	AV *av = newAV ();
1994	SV *coro = SvRV (data);
1995		2111
1996	SvRV_set (data, (SV *)av);	2112	SvRV_set (data, (SV *)av);
1997	api_ready (aTHX_ coro);
1998	SvREFCNT_dec (coro);
1999		2113
2000	/* better take a full copy of the arguments */	2114	/* better take a full copy of the arguments */
2001	while (items--)	2115	while (items--)
2002	av_store (av, items, newSVsv (ST (items)));	2116	av_store (av, items, newSVsv (ST (items)));
		2117
		2118	api_ready (aTHX_ coro);
		2119	SvREFCNT_dec (coro);
2003	}	2120	}
2004		2121
2005	XSRETURN_EMPTY;	2122	XSRETURN_EMPTY;
2006	}	2123	}
2007		2124
…		…
2024		2141
2025	EXTEND (SP, AvFILLp (av) + 1);	2142	EXTEND (SP, AvFILLp (av) + 1);
2026	for (i = 0; i <= AvFILLp (av); ++i)	2143	for (i = 0; i <= AvFILLp (av); ++i)
2027	PUSHs (sv_2mortal (AvARRAY (av)[i]));	2144	PUSHs (sv_2mortal (AvARRAY (av)[i]));
2028		2145
2029	/* we have stolen the elements, so ste length to zero and free */	2146	/* we have stolen the elements, so set length to zero and free */
2030	AvFILLp (av) = -1;	2147	AvFILLp (av) = -1;
2031	av_undef (av);	2148	av_undef (av);
2032		2149
2033	PUTBACK;	2150	PUTBACK;
2034	}	2151	}
…		…
2058	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2175	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2059	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2176	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2060	croak ("Coro::rouse_wait called with illegal callback argument,");	2177	croak ("Coro::rouse_wait called with illegal callback argument,");
2061		2178
2062	{	2179	{
2063	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2180	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2064	SV *data = (SV *)GENSUB_ARG;	2181	SV *data = (SV *)S_GENSUB_ARG;
2065		2182
2066	frame->data = (void *)data;	2183	frame->data = (void *)data;
2067	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2184	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2068	frame->check = slf_check_rouse_wait;	2185	frame->check = slf_check_rouse_wait;
2069	}	2186	}
…		…
2073	coro_new_rouse_cb (pTHX)	2190	coro_new_rouse_cb (pTHX)
2074	{	2191	{
2075	HV *hv = (HV *)SvRV (coro_current);	2192	HV *hv = (HV *)SvRV (coro_current);
2076	struct coro *coro = SvSTATE_hv (hv);	2193	struct coro *coro = SvSTATE_hv (hv);
2077	SV *data = newRV_inc ((SV *)hv);	2194	SV *data = newRV_inc ((SV *)hv);
2078	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2195	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2079		2196
2080	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2197	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2081	SvREFCNT_dec (data); /* magicext increases the refcount */	2198	SvREFCNT_dec (data); /* magicext increases the refcount */
2082		2199
2083	SvREFCNT_dec (coro->rouse_cb);	2200	SvREFCNT_dec (coro->rouse_cb);
…		…
2308	if (PL_op->op_flags & OPf_STACKED)	2425	if (PL_op->op_flags & OPf_STACKED)
2309	{	2426	{
2310	if (items > slf_arga)	2427	if (items > slf_arga)
2311	{	2428	{
2312	slf_arga = items;	2429	slf_arga = items;
2313	free (slf_argv);	2430	Safefree (slf_argv);
2314	slf_argv = malloc (slf_arga * sizeof (SV *));	2431	New (0, slf_argv, slf_arga, SV *);
2315	}	2432	}
2316		2433
2317	slf_argc = items;	2434	slf_argc = items;
2318		2435
2319	for (i = 0; i < items; ++i)	2436	for (i = 0; i < items; ++i)
…		…
2454	/* Coro::Semaphore & Coro::Signal */	2571	/* Coro::Semaphore & Coro::Signal */
2455		2572
2456	static SV *	2573	static SV *
2457	coro_waitarray_new (pTHX_ int count)	2574	coro_waitarray_new (pTHX_ int count)
2458	{	2575	{
2459	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2576	/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2460	AV *av = newAV ();	2577	AV *av = newAV ();
2461	SV **ary;	2578	SV **ary;
2462		2579
2463	/* unfortunately, building manually saves memory */	2580	/* unfortunately, building manually saves memory */
2464	Newx (ary, 2, SV *);	2581	Newx (ary, 2, SV *);
…		…
2606	{	2723	{
2607	if (items >= 2)	2724	if (items >= 2)
2608	{	2725	{
2609	/* callback form */	2726	/* callback form */
2610	AV *av = (AV *)SvRV (arg [0]);	2727	AV *av = (AV *)SvRV (arg [0]);
2611	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2728	SV *cb_cv = s_get_cv_croak (arg [1]);
2612		2729
2613	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));	2730	av_push (av, SvREFCNT_inc_NN (cb_cv));
2614		2731
2615	if (SvIVX (AvARRAY (av)[0]) > 0)	2732	if (SvIVX (AvARRAY (av)[0]) > 0)
2616	coro_semaphore_adjust (aTHX_ av, 0);	2733	coro_semaphore_adjust (aTHX_ av, 0);
2617		2734
2618	frame->prepare = prepare_nop;	2735	frame->prepare = prepare_nop;
…		…
2642	AvARRAY (av)[0] = AvARRAY (av)[1];	2759	AvARRAY (av)[0] = AvARRAY (av)[1];
2643	AvARRAY (av)[1] = cb;	2760	AvARRAY (av)[1] = cb;
2644		2761
2645	cb = av_shift (av);	2762	cb = av_shift (av);
2646		2763
		2764	if (SvTYPE (cb) == SVt_PVCV)
		2765	{
		2766	dSP;
		2767	PUSHMARK (SP);
		2768	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2769	PUTBACK;
		2770	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2771	}
		2772	else
		2773	{
2647	api_ready (aTHX_ cb);	2774	api_ready (aTHX_ cb);
2648	sv_setiv (cb, 0); /* signal waiter */	2775	sv_setiv (cb, 0); /* signal waiter */
		2776	}
		2777
2649	SvREFCNT_dec (cb);	2778	SvREFCNT_dec (cb);
2650		2779
2651	--count;	2780	--count;
2652	}	2781	}
2653	}	2782	}
…		…
2662	static void	2791	static void
2663	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2792	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2664	{	2793	{
2665	AV *av = (AV *)SvRV (arg [0]);	2794	AV *av = (AV *)SvRV (arg [0]);
2666		2795
		2796	if (items >= 2)
		2797	{
		2798	SV *cb_cv = s_get_cv_croak (arg [1]);
		2799	av_push (av, SvREFCNT_inc_NN (cb_cv));
		2800
2667	if (SvIVX (AvARRAY (av)[0]))	2801	if (SvIVX (AvARRAY (av)[0]))
		2802	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
		2803
		2804	frame->prepare = prepare_nop;
		2805	frame->check = slf_check_nop;
		2806	}
		2807	else if (SvIVX (AvARRAY (av)[0]))
2668	{	2808	{
2669	SvIVX (AvARRAY (av)[0]) = 0;	2809	SvIVX (AvARRAY (av)[0]) = 0;
2670	frame->prepare = prepare_nop;	2810	frame->prepare = prepare_nop;
2671	frame->check = slf_check_nop;	2811	frame->check = slf_check_nop;
2672	}	2812	}
2673	else	2813	else
2674	{	2814	{
2675	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */	2815	SV *waiter = newSVsv (coro_current); /* owned by signal av */
2676		2816
2677	av_push (av, waiter);	2817	av_push (av, waiter);
2678		2818
2679	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */	2819	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2680	frame->prepare = prepare_schedule;	2820	frame->prepare = prepare_schedule;
…		…
2698		2838
2699	static void	2839	static void
2700	coro_aio_callback (pTHX_ CV *cv)	2840	coro_aio_callback (pTHX_ CV *cv)
2701	{	2841	{
2702	dXSARGS;	2842	dXSARGS;
2703	AV *state = (AV *)GENSUB_ARG;	2843	AV *state = (AV *)S_GENSUB_ARG;
2704	SV *coro = av_pop (state);	2844	SV *coro = av_pop (state);
2705	SV *data_sv = newSV (sizeof (struct io_state));	2845	SV *data_sv = newSV (sizeof (struct io_state));
2706		2846
2707	av_extend (state, items - 1);	2847	av_extend (state, items - 1);
2708		2848
…		…
2822		2962
2823	for (i = 0; i < items; ++i)	2963	for (i = 0; i < items; ++i)
2824	PUSHs (arg [i]);	2964	PUSHs (arg [i]);
2825		2965
2826	/* now push the callback closure */	2966	/* now push the callback closure */
2827	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	2967	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2828		2968
2829	/* now call the AIO function - we assume our request is uncancelable */	2969	/* now call the AIO function - we assume our request is uncancelable */
2830	PUTBACK;	2970	PUTBACK;
2831	call_sv ((SV *)req, G_VOID | G_DISCARD);	2971	call_sv ((SV *)req, G_VOID | G_DISCARD);
2832	}	2972	}
2833		2973
2834	/* now that the requets is going, we loop toll we have a result */	2974	/* now that the request is going, we loop till we have a result */
2835	frame->data = (void *)state;	2975	frame->data = (void *)state;
2836	frame->prepare = prepare_schedule;	2976	frame->prepare = prepare_schedule;
2837	frame->check = slf_check_aio_req;	2977	frame->check = slf_check_aio_req;
2838	}	2978	}
2839		2979
…		…
2850	/*****************************************************************************/	2990	/*****************************************************************************/
2851		2991
2852	#if CORO_CLONE	2992	#if CORO_CLONE
2853	# include "clone.c"	2993	# include "clone.c"
2854	#endif	2994	#endif
		2995
		2996	/*****************************************************************************/
		2997
		2998	static SV *
		2999	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		3000	{
		3001	SV *coro_sv;
		3002	struct coro *coro;
		3003	MAGIC *mg;
		3004	HV *hv;
		3005	SV *cb;
		3006	int i;
		3007
		3008	if (argc > 0)
		3009	{
		3010	cb = s_get_cv_croak (argv [0]);
		3011
		3012	if (!is_coro)
		3013	{
		3014	if (CvISXSUB (cb))
		3015	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3016
		3017	if (!CvROOT (cb))
		3018	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3019	}
		3020	}
		3021
		3022	Newz (0, coro, 1, struct coro);
		3023	coro->args = newAV ();
		3024	coro->flags = CF_NEW;
		3025
		3026	if (coro_first) coro_first->prev = coro;
		3027	coro->next = coro_first;
		3028	coro_first = coro;
		3029
		3030	coro->hv = hv = newHV ();
		3031	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3032	mg->mg_flags |= MGf_DUP;
		3033	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3034
		3035	if (argc > 0)
		3036	{
		3037	av_extend (coro->args, argc + is_coro - 1);
		3038
		3039	if (is_coro)
		3040	{
		3041	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3042	cb = (SV *)cv_coro_run;
		3043	}
		3044
		3045	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3046
		3047	for (i = 1; i < argc; i++)
		3048	av_push (coro->args, newSVsv (argv [i]));
		3049	}
		3050
		3051	return coro_sv;
		3052	}
2855		3053
2856	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3054	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2857		3055
2858	PROTOTYPES: DISABLE	3056	PROTOTYPES: DISABLE
2859		3057
…		…
2919		3117
2920	if (!svp) croak ("Time::HiRes is required");	3118	if (!svp) croak ("Time::HiRes is required");
2921	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");	3119	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2922		3120
2923	nvtime = INT2PTR (double (*)(), SvIV (*svp));	3121	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		3122
		3123	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		3124	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2924	}	3125	}
2925		3126
2926	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	3127	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2927	}	3128	}
2928		3129
2929	SV *	3130	SV *
2930	new (char *klass, ...)	3131	new (SV *klass, ...)
2931	ALIAS:	3132	ALIAS:
2932	Coro::new = 1	3133	Coro::new = 1
2933	CODE:	3134	CODE:
2934	{	3135	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2935	struct coro *coro;	3136	OUTPUT:
2936	MAGIC *mg;
2937	HV *hv;
2938	CV *cb;
2939	int i;
2940
2941	if (items > 1)
2942	{
2943	cb = coro_sv_2cv (aTHX_ ST (1));
2944
2945	if (!ix)
2946	{
2947	if (CvISXSUB (cb))
2948	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2949
2950	if (!CvROOT (cb))
2951	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2952	}
2953	}
2954
2955	Newz (0, coro, 1, struct coro);
2956	coro->args = newAV ();
2957	coro->flags = CF_NEW;
2958
2959	if (coro_first) coro_first->prev = coro;
2960	coro->next = coro_first;
2961	coro_first = coro;
2962
2963	coro->hv = hv = newHV ();
2964	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2965	mg->mg_flags |= MGf_DUP;
2966	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2967
2968	if (items > 1)
2969	{
2970	av_extend (coro->args, items - 1 + ix - 1);
2971
2972	if (ix)
2973	{
2974	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2975	cb = cv_coro_run;
2976	}
2977
2978	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2979
2980	for (i = 2; i < items; i++)
2981	av_push (coro->args, newSVsv (ST (i)));
2982	}
2983	}
2984	OUTPUT:
2985	RETVAL	3137	RETVAL
2986		3138
2987	void	3139	void
2988	transfer (...)	3140	transfer (...)
2989	PROTOTYPE: $$	3141	PROTOTYPE: $$
…		…
3126	RETVAL = boolSV (coro->flags & ix);	3278	RETVAL = boolSV (coro->flags & ix);
3127	OUTPUT:	3279	OUTPUT:
3128	RETVAL	3280	RETVAL
3129		3281
3130	void	3282	void
3131	throw (Coro::State self, SV *throw = &PL_sv_undef)	3283	throw (Coro::State self, SV *exception = &PL_sv_undef)
3132	PROTOTYPE: $;$	3284	PROTOTYPE: $;$
3133	CODE:	3285	CODE:
3134	{	3286	{
3135	struct coro *current = SvSTATE_current;	3287	struct coro *current = SvSTATE_current;
3136	SV **throwp = self == current ? &CORO_THROW : &self->except;	3288	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3137	SvREFCNT_dec (*throwp);	3289	SvREFCNT_dec (*exceptionp);
3138	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3290	SvGETMAGIC (exception);
		3291	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3139	}	3292	}
3140		3293
3141	void	3294	void
3142	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3295	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3143	PROTOTYPE: $;$	3296	PROTOTYPE: $;$
…		…
3201	CODE:	3354	CODE:
3202	coro_state_destroy (aTHX_ self);	3355	coro_state_destroy (aTHX_ self);
3203	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */	3356	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3204		3357
3205		3358
		3359	SV *
		3360	enable_times (int enabled = enable_times)
		3361	CODE:
		3362	{
		3363	RETVAL = boolSV (enable_times);
		3364
		3365	if (enabled != enable_times)
		3366	{
		3367	enable_times = enabled;
		3368
		3369	coro_times_update ();
		3370	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3371	}
		3372	}
		3373	OUTPUT:
		3374	RETVAL
		3375
		3376	void
		3377	times (Coro::State self)
		3378	PPCODE:
		3379	{
		3380	struct coro *current = SvSTATE (coro_current);
		3381
		3382	if (expect_false (current == self))
		3383	{
		3384	coro_times_update ();
		3385	coro_times_add (SvSTATE (coro_current));
		3386	}
		3387
		3388	EXTEND (SP, 2);
		3389	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3390	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3391
		3392	if (expect_false (current == self))
		3393	coro_times_sub (SvSTATE (coro_current));
		3394	}
		3395
		3396	void
		3397	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3398	CODE:
		3399	{
		3400	struct coro *current = SvSTATE_current;
		3401
		3402	if (current == coro)
		3403	SWAP_SVS (current);
		3404
		3405	if (!coro->swap_sv)
		3406	coro->swap_sv = newAV ();
		3407
		3408	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3409	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3410
		3411	if (current == coro)
		3412	SWAP_SVS (current);
		3413	}
		3414
		3415
3206	MODULE = Coro::State PACKAGE = Coro	3416	MODULE = Coro::State PACKAGE = Coro
3207		3417
3208	BOOT:	3418	BOOT:
3209	{	3419	{
3210	int i;
3211
3212	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3420	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3213	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3421	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3214	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);	3422	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3215	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);	3423	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3216	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3424	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
…		…
3220	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3428	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3221		3429
3222	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3430	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3223	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3431	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3224	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3432	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3225	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3433	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3226		3434
3227	coro_stash = gv_stashpv ("Coro", TRUE);	3435	coro_stash = gv_stashpv ("Coro", TRUE);
3228		3436
3229	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3437	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3230	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3438	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3231	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	3439	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3232	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	3440	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3233	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	3441	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3234	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	3442	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3235
3236	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3237	coro_ready[i] = newAV ();
3238		3443
3239	{	3444	{
3240	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3445	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3241		3446
3242	coroapi.schedule = api_schedule;	3447	coroapi.schedule = api_schedule;
…		…
3252	sv_setiv (sv, (IV)&coroapi);	3457	sv_setiv (sv, (IV)&coroapi);
3253	SvREADONLY_on (sv);	3458	SvREADONLY_on (sv);
3254	}	3459	}
3255	}	3460	}
3256		3461
		3462	SV *
		3463	async (...)
		3464	PROTOTYPE: &@
		3465	CODE:
		3466	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3467	api_ready (aTHX_ RETVAL);
		3468	OUTPUT:
		3469	RETVAL
		3470
3257	void	3471	void
3258	terminate (...)	3472	terminate (...)
3259	CODE:	3473	CODE:
3260	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3474	CORO_EXECUTE_SLF_XS (slf_init_terminate);
3261		3475
…		…
3294	void	3508	void
3295	_set_readyhook (SV *hook)	3509	_set_readyhook (SV *hook)
3296	PROTOTYPE: $	3510	PROTOTYPE: $
3297	CODE:	3511	CODE:
3298	SvREFCNT_dec (coro_readyhook);	3512	SvREFCNT_dec (coro_readyhook);
		3513	SvGETMAGIC (hook);
		3514	if (SvOK (hook))
		3515	{
3299	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3516	coro_readyhook = newSVsv (hook);
		3517	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3518	}
		3519	else
		3520	{
		3521	coro_readyhook = 0;
		3522	CORO_READYHOOK = 0;
		3523	}
3300		3524
3301	int	3525	int
3302	prio (Coro::State coro, int newprio = 0)	3526	prio (Coro::State coro, int newprio = 0)
3303	PROTOTYPE: $;$	3527	PROTOTYPE: $;$
3304	ALIAS:	3528	ALIAS:
…		…
3310	if (items > 1)	3534	if (items > 1)
3311	{	3535	{
3312	if (ix)	3536	if (ix)
3313	newprio = coro->prio - newprio;	3537	newprio = coro->prio - newprio;
3314		3538
3315	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3539	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3316	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3540	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3317		3541
3318	coro->prio = newprio;	3542	coro->prio = newprio;
3319	}	3543	}
3320	}	3544	}
3321	OUTPUT:	3545	OUTPUT:
…		…
3336	RETVAL = coro_nready;	3560	RETVAL = coro_nready;
3337	OUTPUT:	3561	OUTPUT:
3338	RETVAL	3562	RETVAL
3339		3563
3340	void	3564	void
		3565	suspend (Coro::State self)
		3566	PROTOTYPE: $
		3567	CODE:
		3568	self->flags |= CF_SUSPENDED;
		3569
		3570	void
		3571	resume (Coro::State self)
		3572	PROTOTYPE: $
		3573	CODE:
		3574	self->flags &= ~CF_SUSPENDED;
		3575
		3576	void
3341	_pool_handler (...)	3577	_pool_handler (...)
3342	CODE:	3578	CODE:
3343	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);	3579	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3344		3580
3345	void	3581	void
…		…
3356	for (i = 1; i < items; ++i)	3592	for (i = 1; i < items; ++i)
3357	av_push (av, SvREFCNT_inc_NN (ST (i)));	3593	av_push (av, SvREFCNT_inc_NN (ST (i)));
3358		3594
3359	if ((SV *)hv == &PL_sv_undef)	3595	if ((SV *)hv == &PL_sv_undef)
3360	{	3596	{
3361	PUSHMARK (SP);	3597	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3362	EXTEND (SP, 2);
3363	PUSHs (sv_Coro);
3364	PUSHs ((SV *)cv_pool_handler);
3365	PUTBACK;
3366	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3367	SPAGAIN;
3368
3369	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3598	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3599	SvREFCNT_dec (sv);
3370	}	3600	}
3371		3601
3372	{	3602	{
3373	struct coro *coro = SvSTATE_hv (hv);	3603	struct coro *coro = SvSTATE_hv (hv);
3374		3604
…		…
3408	CODE:	3638	CODE:
3409	{	3639	{
3410	struct coro *coro = SvSTATE_current;	3640	struct coro *coro = SvSTATE_current;
3411	AV **avp = ix ? &coro->on_leave : &coro->on_enter;	3641	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3412		3642
3413	block = (SV *)coro_sv_2cv (aTHX_ block);	3643	block = s_get_cv_croak (block);
3414		3644
3415	if (!*avp)	3645	if (!*avp)
3416	*avp = newAV ();	3646	*avp = newAV ();
3417		3647
3418	av_push (*avp, SvREFCNT_inc (block));	3648	av_push (*avp, SvREFCNT_inc (block));
3419		3649
3420	if (!ix)	3650	if (!ix)
3421	on_enterleave_call (aTHX_ block);	3651	on_enterleave_call (aTHX_ block);
3422		3652
3423	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */	3653	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3424	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);	3654	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
3425	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around xs calls */	3655	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
3426	}	3656	}
3427		3657
3428		3658
3429	MODULE = Coro::State PACKAGE = PerlIO::cede	3659	MODULE = Coro::State PACKAGE = PerlIO::cede
3430		3660
…		…
3435	MODULE = Coro::State PACKAGE = Coro::Semaphore	3665	MODULE = Coro::State PACKAGE = Coro::Semaphore
3436		3666
3437	SV *	3667	SV *
3438	new (SV *klass, SV *count = 0)	3668	new (SV *klass, SV *count = 0)
3439	CODE:	3669	CODE:
		3670	{
		3671	int semcnt = 1;
		3672
		3673	if (count)
		3674	{
		3675	SvGETMAGIC (count);
		3676
		3677	if (SvOK (count))
		3678	semcnt = SvIV (count);
		3679	}
		3680
3440	RETVAL = sv_bless (	3681	RETVAL = sv_bless (
3441	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),	3682	coro_waitarray_new (aTHX_ semcnt),
3442	GvSTASH (CvGV (cv))	3683	GvSTASH (CvGV (cv))
3443	);	3684	);
		3685	}
3444	OUTPUT:	3686	OUTPUT:
3445	RETVAL	3687	RETVAL
3446		3688
3447	# helper for Coro::Channel and others	3689	# helper for Coro::Channel and others
3448	SV *	3690	SV *
…		…
3606		3848
3607	void	3849	void
3608	_register (char *target, char *proto, SV *req)	3850	_register (char *target, char *proto, SV *req)
3609	CODE:	3851	CODE:
3610	{	3852	{
3611	CV *req_cv = coro_sv_2cv (aTHX_ req);	3853	SV *req_cv = s_get_cv_croak (req);
3612	/* newXSproto doesn't return the CV on 5.8 */	3854	/* newXSproto doesn't return the CV on 5.8 */
3613	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3855	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3614	sv_setpv ((SV *)slf_cv, proto);	3856	sv_setpv ((SV *)slf_cv, proto);
3615	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3857	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3616	}	3858	}
3617		3859
		3860	MODULE = Coro::State PACKAGE = Coro::Select
		3861
		3862	void
		3863	patch_pp_sselect ()
		3864	CODE:
		3865	if (!coro_old_pp_sselect)
		3866	{
		3867	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		3868	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		3869	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		3870	}
		3871
		3872	void
		3873	unpatch_pp_sselect ()
		3874	CODE:
		3875	if (coro_old_pp_sselect)
		3876	{
		3877	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		3878	coro_old_pp_sselect = 0;
		3879	}
		3880

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