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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.353 by root, Mon Jun 22 11:25:53 2009 UTC vs.
Revision 1.392 by root, Fri Apr 29 15:43:27 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>
16		21
17	#ifdef WIN32	22	#ifndef SVs_PADSTALE
		23	# define SVs_PADSTALE 0
		24	#endif
		25
		26	#if defined(_WIN32)
		27	# undef HAS_GETTIMEOFDAY
18	# undef setjmp	28	# undef setjmp
19	# undef longjmp	29	# undef longjmp
20	# undef _exit	30	# undef _exit
21	# define setjmp _setjmp /* deep magic */	31	# define setjmp _setjmp /* deep magic */
22	#else	32	#else
…		…
51	#endif	61	#endif
52		62
53	/* the maximum number of idle cctx that will be pooled */	63	/* the maximum number of idle cctx that will be pooled */
54	static int cctx_max_idle = 4;	64	static int cctx_max_idle = 4;
55		65
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	66	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116	# undef CORO_STACKGUARD	67	# undef CORO_STACKGUARD
117	#endif	68	#endif
118		69
119	#ifndef CORO_STACKGUARD	70	#ifndef CORO_STACKGUARD
…		…
137		88
138	#define IN_DESTRUCT PL_dirty	89	#define IN_DESTRUCT PL_dirty
139		90
140	#if __GNUC__ >= 3	91	#if __GNUC__ >= 3
141	# define attribute(x) __attribute__(x)	92	# define attribute(x) __attribute__(x)
142	# define expect(expr,value) __builtin_expect ((expr),(value))	93	# define expect(expr,value) __builtin_expect ((expr), (value))
143	# define INLINE static inline	94	# define INLINE static inline
144	#else	95	#else
145	# define attribute(x)	96	# define attribute(x)
146	# define expect(expr,value) (expr)	97	# define expect(expr,value) (expr)
147	# define INLINE static	98	# define INLINE static
…		…
159	# if CORO_PTHREAD	110	# if CORO_PTHREAD
160	static void *coro_thx;	111	static void *coro_thx;
161	# endif	112	# endif
162	#endif	113	#endif
163		114
		115	#ifdef __linux
		116	# include <time.h> /* for timespec */
		117	# include <syscall.h> /* for SYS_* */
		118	# ifdef SYS_clock_gettime
		119	# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		120	# define CORO_CLOCK_MONOTONIC 1
		121	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
		122	# endif
		123	#endif
		124
164	static double (*nvtime)(); /* so why doesn't it take void? */	125	static double (*nvtime)(); /* so why doesn't it take void? */
		126	static void (*u2time)(pTHX_ UV ret[2]);
165		127
166	/* we hijack an hopefully unused CV flag for our purposes */	128	/* we hijack an hopefully unused CV flag for our purposes */
167	#define CVf_SLF 0x4000	129	#define CVf_SLF 0x4000
168	static OP *pp_slf (pTHX);	130	static OP *pp_slf (pTHX);
169		131
…		…
190	static SV *sv_pool_size;	152	static SV *sv_pool_size;
191	static SV *sv_async_pool_idle; /* description string */	153	static SV *sv_async_pool_idle; /* description string */
192	static AV *av_async_pool; /* idle pool */	154	static AV *av_async_pool; /* idle pool */
193	static SV *sv_Coro; /* class string */	155	static SV *sv_Coro; /* class string */
194	static CV *cv_pool_handler;	156	static CV *cv_pool_handler;
195	static CV *cv_coro_state_new;
196		157
197	/* Coro::AnyEvent */	158	/* Coro::AnyEvent */
198	static SV *sv_activity;	159	static SV *sv_activity;
		160
		161	/* enable processtime/realtime profiling */
		162	static char enable_times;
		163	typedef U32 coro_ts[2];
		164	static coro_ts time_real, time_cpu;
		165	static char times_valid;
199		166
200	static struct coro_cctx *cctx_first;	167	static struct coro_cctx *cctx_first;
201	static int cctx_count, cctx_idle;	168	static int cctx_count, cctx_idle;
202		169
203	enum {	170	enum {
…		…
274	CV *startcv; /* the CV to execute */	241	CV *startcv; /* the CV to execute */
275	AV *args; /* data associated with this coroutine (initial args) */	242	AV *args; /* data associated with this coroutine (initial args) */
276	int refcnt; /* coroutines are refcounted, yes */	243	int refcnt; /* coroutines are refcounted, yes */
277	int flags; /* CF_ flags */	244	int flags; /* CF_ flags */
278	HV *hv; /* the perl hash associated with this coro, if any */	245	HV *hv; /* the perl hash associated with this coro, if any */
279	void (*on_destroy)(pTHX_ struct coro *coro);	246	void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
280		247
281	/* statistics */	248	/* statistics */
282	int usecount; /* number of transfers to this coro */	249	int usecount; /* number of transfers to this coro */
283		250
284	/* coro process data */	251	/* coro process data */
…		…
293		260
294	/* on_enter/on_leave */	261	/* on_enter/on_leave */
295	AV *on_enter;	262	AV *on_enter;
296	AV *on_leave;	263	AV *on_leave;
297		264
		265	/* swap_sv */
		266	AV *swap_sv;
		267
		268	/* times */
		269	coro_ts t_cpu, t_real;
		270
298	/* linked list */	271	/* linked list */
299	struct coro *next, *prev;	272	struct coro *next, *prev;
300	};	273	};
301		274
302	typedef struct coro *Coro__State;	275	typedef struct coro *Coro__State;
…		…
307	/* the mainr easonw e don't support windows process emulation */	280	/* the mainr easonw e don't support windows process emulation */
308	static struct CoroSLF slf_frame; /* the current slf frame */	281	static struct CoroSLF slf_frame; /* the current slf frame */
309		282
310	/** Coro ********************************************************************/	283	/** Coro ********************************************************************/
311		284
312	#define PRIO_MAX 3	285	#define CORO_PRIO_MAX 3
313	#define PRIO_HIGH 1	286	#define CORO_PRIO_HIGH 1
314	#define PRIO_NORMAL 0	287	#define CORO_PRIO_NORMAL 0
315	#define PRIO_LOW -1	288	#define CORO_PRIO_LOW -1
316	#define PRIO_IDLE -3	289	#define CORO_PRIO_IDLE -3
317	#define PRIO_MIN -4	290	#define CORO_PRIO_MIN -4
318		291
319	/* for Coro.pm */	292	/* for Coro.pm */
320	static SV *coro_current;	293	static SV *coro_current;
321	static SV *coro_readyhook;	294	static SV *coro_readyhook;
322	static struct coro *coro_ready [PRIO_MAX - PRIO_MIN + 1][2]; /* head|tail */	295	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
323	static CV *cv_coro_run, *cv_coro_terminate;	296	static CV *cv_coro_run, *cv_coro_terminate;
324	static struct coro *coro_first;	297	static struct coro *coro_first;
325	#define coro_nready coroapi.nready	298	#define coro_nready coroapi.nready
		299
		300	/** Coro::Select ************************************************************/
		301
		302	static OP *(*coro_old_pp_sselect) (pTHX);
		303	static SV *coro_select_select;
		304
		305	/* horrible hack, but if it works... */
		306	static OP *
		307	coro_pp_sselect (pTHX)
		308	{
		309	dSP;
		310	PUSHMARK (SP - 4); /* fake argument list */
		311	XPUSHs (coro_select_select);
		312	PUTBACK;
		313
		314	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		315	PL_op->op_flags |= OPf_STACKED;
		316	PL_op->op_private = 0;
		317	return PL_ppaddr [OP_ENTERSUB](aTHX);
		318	}
		319
		320	/** time stuff **************************************************************/
		321
		322	#ifdef HAS_GETTIMEOFDAY
		323
		324	static void
		325	coro_u2time (pTHX_ UV ret[2])
		326	{
		327	struct timeval tv;
		328	gettimeofday (&tv, 0);
		329
		330	ret [0] = tv.tv_sec;
		331	ret [1] = tv.tv_usec;
		332	}
		333
		334	static double
		335	coro_nvtime ()
		336	{
		337	struct timeval tv;
		338	gettimeofday (&tv, 0);
		339
		340	return tv.tv_sec + tv.tv_usec * 1e-6;
		341	}
		342
		343	static void
		344	time_init (pTHX)
		345	{
		346	nvtime = coro_nvtime;
		347	u2time = coro_u2time;
		348	}
		349
		350	#else
		351
		352	static void
		353	time_init (pTHX)
		354	{
		355	SV **svp;
		356
		357	require_pv ("Time/HiRes.pm");
		358
		359	svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		360
		361	if (!svp) croak ("Time::HiRes is required, but missing. Caught");
		362	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
		363
		364	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		365
		366	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		367	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
		368	}
		369
		370	#endif
326		371
327	/** lowlevel stuff **********************************************************/	372	/** lowlevel stuff **********************************************************/
328		373
329	static SV *	374	static SV *
330	coro_get_sv (pTHX_ const char *name, int create)	375	coro_get_sv (pTHX_ const char *name, int create)
…		…
354	get_hv (name, create);	399	get_hv (name, create);
355	#endif	400	#endif
356	return get_hv (name, create);	401	return get_hv (name, create);
357	}	402	}
358		403
359	/* may croak */	404	INLINE void
360	INLINE CV *	405	coro_times_update ()
361	coro_sv_2cv (pTHX_ SV *sv)
362	{	406	{
363	HV *st;	407	#ifdef coro_clock_gettime
364	GV *gvp;	408	struct timespec ts;
365	CV *cv = sv_2cv (sv, &st, &gvp, 0);
366		409
367	if (!cv)	410	ts.tv_sec = ts.tv_nsec = 0;
368	croak ("code reference expected");	411	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		412	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
369		413
370	return cv;	414	ts.tv_sec = ts.tv_nsec = 0;
		415	coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
		416	time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
		417	#else
		418	dTHX;
		419	UV tv[2];
		420
		421	u2time (aTHX_ tv);
		422	time_real [0] = tv [0];
		423	time_real [1] = tv [1] * 1000;
		424	#endif
		425	}
		426
		427	INLINE void
		428	coro_times_add (struct coro *c)
		429	{
		430	c->t_real [1] += time_real [1];
		431	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
		432	c->t_real [0] += time_real [0];
		433
		434	c->t_cpu [1] += time_cpu [1];
		435	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
		436	c->t_cpu [0] += time_cpu [0];
		437	}
		438
		439	INLINE void
		440	coro_times_sub (struct coro *c)
		441	{
		442	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
		443	c->t_real [1] -= time_real [1];
		444	c->t_real [0] -= time_real [0];
		445
		446	if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
		447	c->t_cpu [1] -= time_cpu [1];
		448	c->t_cpu [0] -= time_cpu [0];
371	}	449	}
372		450
373	/*****************************************************************************/	451	/*****************************************************************************/
374	/* magic glue */	452	/* magic glue */
375		453
…		…
475	static int	553	static int
476	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)	554	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
477	{	555	{
478	AV *padlist;	556	AV *padlist;
479	AV *av = (AV *)mg->mg_obj;	557	AV *av = (AV *)mg->mg_obj;
		558
		559	/* perl manages to free our internal AV and _then_ call us */
		560	if (IN_DESTRUCT)
		561	return 0;
480		562
481	/* casting is fun. */	563	/* casting is fun. */
482	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	564	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
483	free_padlist (aTHX_ padlist);	565	free_padlist (aTHX_ padlist);
484		566
…		…
533	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	615	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
534	}	616	}
535		617
536	/** load & save, init *******************************************************/	618	/** load & save, init *******************************************************/
537		619
		620	/* swap sv heads, at least logically */
		621	static void
		622	swap_svs (pTHX_ Coro__State c)
		623	{
		624	int i;
		625
		626	for (i = 0; i <= AvFILLp (c->swap_sv); )
		627	{
		628	SV *a = AvARRAY (c->swap_sv)[i++];
		629	SV *b = AvARRAY (c->swap_sv)[i++];
		630
		631	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		632	SV tmp;
		633
		634	/* swap sv_any */
		635	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		636
		637	/* swap sv_flags */
		638	SvFLAGS (&tmp) = SvFLAGS (a);
		639	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		640	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		641
		642	#if PERL_VERSION_ATLEAST (5,10,0)
		643	/* perl 5.10 complicates this _quite_ a bit, but it also is
		644	* much faster, so no quarrels here. alternatively, we could
		645	* sv_upgrade to avoid this.
		646	*/
		647	{
		648	/* swap sv_u */
		649	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		650
		651	/* if SvANY points to the head, we need to adjust the pointers,
		652	* as the pointer for a still points to b, and maybe vice versa.
		653	*/
		654	#define svany_in_head(type) \
		655	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
		656
		657	if (svany_in_head (SvTYPE (a)))
		658	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		659
		660	if (svany_in_head (SvTYPE (b)))
		661	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		662	}
		663	#endif
		664	}
		665	}
		666
		667	#define SWAP_SVS(coro) \
		668	if (expect_false ((coro)->swap_sv)) \
		669	swap_svs (aTHX_ (coro))
		670
538	static void	671	static void
539	on_enterleave_call (pTHX_ SV *cb);	672	on_enterleave_call (pTHX_ SV *cb);
540		673
541	static void	674	static void
542	load_perl (pTHX_ Coro__State c)	675	load_perl (pTHX_ Coro__State c)
…		…
573	}	706	}
574		707
575	slf_frame = c->slf_frame;	708	slf_frame = c->slf_frame;
576	CORO_THROW = c->except;	709	CORO_THROW = c->except;
577		710
		711	if (expect_false (enable_times))
		712	{
		713	if (expect_false (!times_valid))
		714	coro_times_update ();
		715
		716	coro_times_sub (c);
		717	}
		718
578	if (expect_false (c->on_enter))	719	if (expect_false (c->on_enter))
579	{	720	{
580	int i;	721	int i;
581		722
582	for (i = 0; i <= AvFILLp (c->on_enter); ++i)	723	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
583	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);	724	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
584	}	725	}
		726
		727	SWAP_SVS (c);
585	}	728	}
586		729
587	static void	730	static void
588	save_perl (pTHX_ Coro__State c)	731	save_perl (pTHX_ Coro__State c)
589	{	732	{
		733	SWAP_SVS (c);
		734
590	if (expect_false (c->on_leave))	735	if (expect_false (c->on_leave))
591	{	736	{
592	int i;	737	int i;
593		738
594	for (i = AvFILLp (c->on_leave); i >= 0; --i)	739	for (i = AvFILLp (c->on_leave); i >= 0; --i)
595	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);	740	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
		741	}
		742
		743	times_valid = 0;
		744
		745	if (expect_false (enable_times))
		746	{
		747	coro_times_update (); times_valid = 1;
		748	coro_times_add (c);
596	}	749	}
597		750
598	c->except = CORO_THROW;	751	c->except = CORO_THROW;
599	c->slf_frame = slf_frame;	752	c->slf_frame = slf_frame;
600		753
…		…
615	{	768	{
616	while (expect_true (cxix >= 0))	769	while (expect_true (cxix >= 0))
617	{	770	{
618	PERL_CONTEXT *cx = &ccstk[cxix--];	771	PERL_CONTEXT *cx = &ccstk[cxix--];
619		772
620	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))	773	if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
621	{	774	{
622	CV *cv = cx->blk_sub.cv;	775	CV *cv = cx->blk_sub.cv;
623		776
624	if (expect_true (CvDEPTH (cv)))	777	if (expect_true (CvDEPTH (cv)))
625	{	778	{
…		…
649	/* we manually unroll here, as usually 2 slots is enough */	802	/* we manually unroll here, as usually 2 slots is enough */
650	if (SLOT_COUNT >= 1) CXINC;	803	if (SLOT_COUNT >= 1) CXINC;
651	if (SLOT_COUNT >= 2) CXINC;	804	if (SLOT_COUNT >= 2) CXINC;
652	if (SLOT_COUNT >= 3) CXINC;	805	if (SLOT_COUNT >= 3) CXINC;
653	{	806	{
654	int i;	807	unsigned int i;
655	for (i = 3; i < SLOT_COUNT; ++i)	808	for (i = 3; i < SLOT_COUNT; ++i)
656	CXINC;	809	CXINC;
657	}	810	}
658	cxstack_ix -= SLOT_COUNT; /* undo allocation */	811	cxstack_ix -= SLOT_COUNT; /* undo allocation */
659		812
…		…
893	slf_check_repeat (pTHX_ struct CoroSLF *frame)	1046	slf_check_repeat (pTHX_ struct CoroSLF *frame)
894	{	1047	{
895	return 1;	1048	return 1;
896	}	1049	}
897		1050
898	static UNOP coro_setup_op;	1051	static UNOP init_perl_op;
899		1052
900	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1053	static void NOINLINE /* noinline to keep it out of the transfer fast path */
901	coro_setup (pTHX_ struct coro *coro)	1054	init_perl (pTHX_ struct coro *coro)
902	{	1055	{
903	/*	1056	/*
904	* emulate part of the perl startup here.	1057	* emulate part of the perl startup here.
905	*/	1058	*/
906	coro_init_stacks (aTHX);	1059	coro_init_stacks (aTHX);
…		…
913	PL_comppad_name_fill = 0;	1066	PL_comppad_name_fill = 0;
914	PL_comppad_name_floor = 0;	1067	PL_comppad_name_floor = 0;
915	PL_curpm = 0;	1068	PL_curpm = 0;
916	PL_curpad = 0;	1069	PL_curpad = 0;
917	PL_localizing = 0;	1070	PL_localizing = 0;
918	PL_dirty = 0;
919	PL_restartop = 0;	1071	PL_restartop = 0;
920	#if PERL_VERSION_ATLEAST (5,10,0)	1072	#if PERL_VERSION_ATLEAST (5,10,0)
921	PL_parser = 0;	1073	PL_parser = 0;
922	#endif	1074	#endif
923	PL_hints = 0;	1075	PL_hints = 0;
…		…
955	*/	1107	*/
956	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1108	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
957	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1109	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
958		1110
959	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1111	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
960	coro_setup_op.op_next = PL_op;	1112	init_perl_op.op_next = PL_op;
961	coro_setup_op.op_type = OP_ENTERSUB;	1113	init_perl_op.op_type = OP_ENTERSUB;
962	coro_setup_op.op_ppaddr = pp_slf;	1114	init_perl_op.op_ppaddr = pp_slf;
963	/* no flags etc. required, as an init function won't be called */	1115	/* no flags etc. required, as an init function won't be called */
964		1116
965	PL_op = (OP *)&coro_setup_op;	1117	PL_op = (OP *)&init_perl_op;
966		1118
967	/* copy throw, in case it was set before coro_setup */	1119	/* copy throw, in case it was set before init_perl */
968	CORO_THROW = coro->except;	1120	CORO_THROW = coro->except;
		1121
		1122	SWAP_SVS (coro);
		1123
		1124	if (expect_false (enable_times))
		1125	{
		1126	coro_times_update ();
		1127	coro_times_sub (coro);
		1128	}
969	}	1129	}
970		1130
971	static void	1131	static void
972	coro_unwind_stacks (pTHX)	1132	coro_unwind_stacks (pTHX)
973	{	1133	{
…		…
988	dounwind (-1);	1148	dounwind (-1);
989	}	1149	}
990	}	1150	}
991		1151
992	static void	1152	static void
993	coro_destruct_perl (pTHX_ struct coro *coro)	1153	destroy_perl (pTHX_ struct coro *coro)
994	{	1154	{
995	SV *svf [9];	1155	SV *svf [9];
996		1156
997	{	1157	{
998	struct coro *current = SvSTATE_current;	1158	struct coro *current = SvSTATE_current;
…		…
1002	save_perl (aTHX_ current);	1162	save_perl (aTHX_ current);
1003	load_perl (aTHX_ coro);	1163	load_perl (aTHX_ coro);
1004		1164
1005	coro_unwind_stacks (aTHX);	1165	coro_unwind_stacks (aTHX);
1006	coro_destruct_stacks (aTHX);	1166	coro_destruct_stacks (aTHX);
		1167
		1168	/* restore swapped sv's */
		1169	SWAP_SVS (coro);
1007		1170
1008	// now save some sv's to be free'd later	1171	// now save some sv's to be free'd later
1009	svf [0] = GvSV (PL_defgv);	1172	svf [0] = GvSV (PL_defgv);
1010	svf [1] = (SV *)GvAV (PL_defgv);	1173	svf [1] = (SV *)GvAV (PL_defgv);
1011	svf [2] = GvSV (PL_errgv);	1174	svf [2] = GvSV (PL_errgv);
…		…
1019		1182
1020	load_perl (aTHX_ current);	1183	load_perl (aTHX_ current);
1021	}	1184	}
1022		1185
1023	{	1186	{
1024	int i;	1187	unsigned int i;
1025		1188
1026	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)	1189	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1027	SvREFCNT_dec (svf [i]);	1190	SvREFCNT_dec (svf [i]);
1028		1191
1029	SvREFCNT_dec (coro->saved_deffh);	1192	SvREFCNT_dec (coro->saved_deffh);
…		…
1235	/* somebody or something will hit me for both perl_run and PL_restartop */	1398	/* somebody or something will hit me for both perl_run and PL_restartop */
1236	PL_restartop = PL_op;	1399	PL_restartop = PL_op;
1237	perl_run (PL_curinterp);	1400	perl_run (PL_curinterp);
1238	/*	1401	/*
1239	* Unfortunately, there is no way to get at the return values of the	1402	* Unfortunately, there is no way to get at the return values of the
1240	* coro body here, as perl_run destroys these	1403	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1404	* runtime errors here, as this is just a random interpreter, not a thread.
1241	*/	1405	*/
1242		1406
1243	/*	1407	/*
1244	* If perl-run returns we assume exit() was being called or the coro	1408	* If perl-run returns we assume exit() was being called or the coro
1245	* fell off the end, which seems to be the only valid (non-bug)	1409	* fell off the end, which seems to be the only valid (non-bug)
…		…
1452	if (expect_false (next->flags & CF_NEW))	1616	if (expect_false (next->flags & CF_NEW))
1453	{	1617	{
1454	/* need to start coroutine */	1618	/* need to start coroutine */
1455	next->flags &= ~CF_NEW;	1619	next->flags &= ~CF_NEW;
1456	/* setup coroutine call */	1620	/* setup coroutine call */
1457	coro_setup (aTHX_ next);	1621	init_perl (aTHX_ next);
1458	}	1622	}
1459	else	1623	else
1460	load_perl (aTHX_ next);	1624	load_perl (aTHX_ next);
1461		1625
1462	/* possibly untie and reuse the cctx */	1626	/* possibly untie and reuse the cctx */
…		…
1525		1689
1526	if (coro->mainstack	1690	if (coro->mainstack
1527	&& coro->mainstack != main_mainstack	1691	&& coro->mainstack != main_mainstack
1528	&& coro->slot	1692	&& coro->slot
1529	&& !PL_dirty)	1693	&& !PL_dirty)
1530	coro_destruct_perl (aTHX_ coro);	1694	destroy_perl (aTHX_ coro);
		1695
		1696	if (coro->next) coro->next->prev = coro->prev;
		1697	if (coro->prev) coro->prev->next = coro->next;
		1698	if (coro == coro_first) coro_first = coro->next;
1531		1699
1532	cctx_destroy (coro->cctx);	1700	cctx_destroy (coro->cctx);
1533	SvREFCNT_dec (coro->startcv);	1701	SvREFCNT_dec (coro->startcv);
1534	SvREFCNT_dec (coro->args);	1702	SvREFCNT_dec (coro->args);
		1703	SvREFCNT_dec (coro->swap_sv);
1535	SvREFCNT_dec (CORO_THROW);	1704	SvREFCNT_dec (CORO_THROW);
1536
1537	if (coro->next) coro->next->prev = coro->prev;
1538	if (coro->prev) coro->prev->next = coro->next;
1539	if (coro == coro_first) coro_first = coro->next;
1540		1705
1541	return 1;	1706	return 1;
1542	}	1707	}
1543		1708
1544	static int	1709	static int
…		…
1594		1759
1595	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1760	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1596	TRANSFER (ta, 1);	1761	TRANSFER (ta, 1);
1597	}	1762	}
1598		1763
1599	/*****************************************************************************/
1600	/* gensub: simple closure generation utility */
1601
1602	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1603
1604	/* create a closure from XS, returns a code reference */
1605	/* the arg can be accessed via GENSUB_ARG from the callback */
1606	/* the callback must use dXSARGS/XSRETURN */
1607	static SV *
1608	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1609	{
1610	CV *cv = (CV *)newSV (0);
1611
1612	sv_upgrade ((SV *)cv, SVt_PVCV);
1613
1614	CvANON_on (cv);
1615	CvISXSUB_on (cv);
1616	CvXSUB (cv) = xsub;
1617	GENSUB_ARG = arg;
1618
1619	return newRV_noinc ((SV *)cv);
1620	}
1621
1622	/** Coro ********************************************************************/	1764	/** Coro ********************************************************************/
1623		1765
1624	INLINE void	1766	INLINE void
1625	coro_enq (pTHX_ struct coro *coro)	1767	coro_enq (pTHX_ struct coro *coro)
1626	{	1768	{
1627	struct coro **ready = coro_ready [coro->prio - PRIO_MIN];	1769	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1628		1770
1629	SvREFCNT_inc_NN (coro->hv);	1771	SvREFCNT_inc_NN (coro->hv);
1630		1772
1631	coro->next_ready = 0;	1773	coro->next_ready = 0;
1632	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;	1774	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
…		…
1636	INLINE struct coro *	1778	INLINE struct coro *
1637	coro_deq (pTHX)	1779	coro_deq (pTHX)
1638	{	1780	{
1639	int prio;	1781	int prio;
1640		1782
1641	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1783	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1642	{	1784	{
1643	struct coro **ready = coro_ready [prio];	1785	struct coro **ready = coro_ready [prio];
1644		1786
1645	if (ready [0])	1787	if (ready [0])
1646	{	1788	{
…		…
1651	}	1793	}
1652		1794
1653	return 0;	1795	return 0;
1654	}	1796	}
1655		1797
		1798	static void
		1799	invoke_sv_ready_hook_helper (void)
		1800	{
		1801	dTHX;
		1802	dSP;
		1803
		1804	ENTER;
		1805	SAVETMPS;
		1806
		1807	PUSHMARK (SP);
		1808	PUTBACK;
		1809	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1810
		1811	FREETMPS;
		1812	LEAVE;
		1813	}
		1814
1656	static int	1815	static int
1657	api_ready (pTHX_ SV *coro_sv)	1816	api_ready (pTHX_ SV *coro_sv)
1658	{	1817	{
1659	struct coro *coro;
1660	SV *sv_hook;
1661	void (*xs_hook)(void);
1662
1663	coro = SvSTATE (coro_sv);	1818	struct coro *coro = SvSTATE (coro_sv);
1664		1819
1665	if (coro->flags & CF_READY)	1820	if (coro->flags & CF_READY)
1666	return 0;	1821	return 0;
1667		1822
1668	coro->flags |= CF_READY;	1823	coro->flags |= CF_READY;
1669		1824
1670	sv_hook = coro_nready ? 0 : coro_readyhook;
1671	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1672
1673	coro_enq (aTHX_ coro);	1825	coro_enq (aTHX_ coro);
1674	++coro_nready;
1675		1826
1676	if (sv_hook)	1827	if (!coro_nready++)
1677	{	1828	if (coroapi.readyhook)
1678	dSP;	1829	coroapi.readyhook ();
1679
1680	ENTER;
1681	SAVETMPS;
1682
1683	PUSHMARK (SP);
1684	PUTBACK;
1685	call_sv (sv_hook, G_VOID | G_DISCARD);
1686
1687	FREETMPS;
1688	LEAVE;
1689	}
1690
1691	if (xs_hook)
1692	xs_hook ();
1693		1830
1694	return 1;	1831	return 1;
1695	}	1832	}
1696		1833
1697	static int	1834	static int
…		…
1742	{	1879	{
1743	/* nothing to schedule: call the idle handler */	1880	/* nothing to schedule: call the idle handler */
1744	if (SvROK (sv_idle)	1881	if (SvROK (sv_idle)
1745	&& SvOBJECT (SvRV (sv_idle)))	1882	&& SvOBJECT (SvRV (sv_idle)))
1746	{	1883	{
		1884	if (SvRV (sv_idle) == SvRV (coro_current))
		1885	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1886
1747	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	1887	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1748	api_ready (aTHX_ SvRV (sv_idle));	1888	api_ready (aTHX_ SvRV (sv_idle));
1749	--coro_nready;	1889	--coro_nready;
1750	}	1890	}
1751	else	1891	else
1752	{	1892	{
		1893	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1753	dSP;	1894	dSP;
1754		1895
1755	ENTER;	1896	ENTER;
1756	SAVETMPS;	1897	SAVETMPS;
1757		1898
…		…
1867		2008
1868	static void	2009	static void
1869	coro_call_on_destroy (pTHX_ struct coro *coro)	2010	coro_call_on_destroy (pTHX_ struct coro *coro)
1870	{	2011	{
1871	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);	2012	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1872	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1873		2013
1874	if (on_destroyp)	2014	if (on_destroyp)
1875	{	2015	{
1876	AV *on_destroy = (AV *)SvRV (*on_destroyp);	2016	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		2017	AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
		2018	AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
1877		2019
1878	while (AvFILLp (on_destroy) >= 0)	2020	while (AvFILLp (on_destroy) >= 0)
1879	{	2021	{
1880	dSP; /* don't disturb outer sp */	2022	dSP; /* don't disturb outer sp */
1881	SV *cb = av_pop (on_destroy);	2023	SV *cb = av_pop (on_destroy);
…		…
1883	PUSHMARK (SP);	2025	PUSHMARK (SP);
1884		2026
1885	if (statusp)	2027	if (statusp)
1886	{	2028	{
1887	int i;	2029	int i;
1888	AV *status = (AV *)SvRV (*statusp);
1889	EXTEND (SP, AvFILLp (status) + 1);	2030	EXTEND (SP, AvFILLp (status) + 1);
1890		2031
1891	for (i = 0; i <= AvFILLp (status); ++i)	2032	for (i = 0; i <= AvFILLp (status); ++i)
1892	PUSHs (AvARRAY (status)[i]);	2033	PUSHs (AvARRAY (status)[i]);
1893	}	2034	}
…		…
1897	}	2038	}
1898	}	2039	}
1899	}	2040	}
1900		2041
1901	static void	2042	static void
1902	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2043	coro_set_status (HV *coro_hv, SV **arg, int items)
1903	{	2044	{
1904	int i;
1905	HV *hv = (HV *)SvRV (coro_current);
1906	AV *av = newAV ();	2045	AV *av = newAV ();
1907		2046
		2047	/* items are actually not so common, so optimise for this case */
		2048	if (items)
		2049	{
		2050	int i;
		2051
1908	av_extend (av, items - 1);	2052	av_extend (av, items - 1);
		2053
1909	for (i = 0; i < items; ++i)	2054	for (i = 0; i < items; ++i)
1910	av_push (av, SvREFCNT_inc_NN (arg [i]));	2055	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2056	}
1911		2057
1912	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2058	hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		2059	}
1913		2060
		2061	static void
		2062	slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
		2063	{
1914	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */	2064	av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1915	api_ready (aTHX_ sv_manager);	2065	api_ready (aTHX_ sv_manager);
1916		2066
1917	frame->prepare = prepare_schedule;	2067	frame->prepare = prepare_schedule;
1918	frame->check = slf_check_repeat;	2068	frame->check = slf_check_repeat;
1919		2069
1920	/* as a minor optimisation, we could unwind all stacks here */	2070	/* as a minor optimisation, we could unwind all stacks here */
1921	/* but that puts extra pressure on pp_slf, and is not worth much */	2071	/* but that puts extra pressure on pp_slf, and is not worth much */
1922	/*coro_unwind_stacks (aTHX);*/	2072	/*coro_unwind_stacks (aTHX);*/
		2073	}
		2074
		2075	static void
		2076	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2077	{
		2078	HV *coro_hv = (HV *)SvRV (coro_current);
		2079
		2080	coro_set_status (coro_hv, arg, items);
		2081	slf_init_terminate_cancel_common (frame, coro_hv);
		2082	}
		2083
		2084	static void
		2085	slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2086	{
		2087	HV *coro_hv;
		2088	struct coro *coro;
		2089
		2090	if (items <= 0)
		2091	croak ("Coro::cancel called without coro object,");
		2092
		2093	coro = SvSTATE (arg [0]);
		2094	coro_hv = coro->hv;
		2095
		2096	coro_set_status (coro_hv, arg + 1, items - 1);
		2097
		2098	/* cancelling the current coro is allowed, and equals terminate */
		2099	if (coro_hv == (HV *)SvRV (coro_current))
		2100	slf_init_terminate_cancel_common (frame, coro_hv);
		2101	else
		2102	{
		2103	/* otherwise we cancel ourselves */
		2104	coro_state_destroy (aTHX_ coro);
		2105	coro_call_on_destroy (aTHX_ coro);
		2106
		2107	frame->prepare = prepare_nop;
		2108	frame->check = slf_check_nop;
		2109	}
1923	}	2110	}
1924		2111
1925	/*****************************************************************************/	2112	/*****************************************************************************/
1926	/* async pool handler */	2113	/* async pool handler */
1927		2114
…		…
2005		2192
2006	static void	2193	static void
2007	coro_rouse_callback (pTHX_ CV *cv)	2194	coro_rouse_callback (pTHX_ CV *cv)
2008	{	2195	{
2009	dXSARGS;	2196	dXSARGS;
2010	SV *data = (SV *)GENSUB_ARG;	2197	SV *data = (SV *)S_GENSUB_ARG;
2011		2198
2012	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2199	if (SvTYPE (SvRV (data)) != SVt_PVAV)
2013	{	2200	{
2014	/* first call, set args */	2201	/* first call, set args */
2015	SV *coro = SvRV (data);	2202	SV *coro = SvRV (data);
…		…
2081	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2268	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2082	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2269	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2083	croak ("Coro::rouse_wait called with illegal callback argument,");	2270	croak ("Coro::rouse_wait called with illegal callback argument,");
2084		2271
2085	{	2272	{
2086	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2273	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2087	SV *data = (SV *)GENSUB_ARG;	2274	SV *data = (SV *)S_GENSUB_ARG;
2088		2275
2089	frame->data = (void *)data;	2276	frame->data = (void *)data;
2090	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2277	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2091	frame->check = slf_check_rouse_wait;	2278	frame->check = slf_check_rouse_wait;
2092	}	2279	}
…		…
2096	coro_new_rouse_cb (pTHX)	2283	coro_new_rouse_cb (pTHX)
2097	{	2284	{
2098	HV *hv = (HV *)SvRV (coro_current);	2285	HV *hv = (HV *)SvRV (coro_current);
2099	struct coro *coro = SvSTATE_hv (hv);	2286	struct coro *coro = SvSTATE_hv (hv);
2100	SV *data = newRV_inc ((SV *)hv);	2287	SV *data = newRV_inc ((SV *)hv);
2101	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2288	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2102		2289
2103	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2290	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2104	SvREFCNT_dec (data); /* magicext increases the refcount */	2291	SvREFCNT_dec (data); /* magicext increases the refcount */
2105		2292
2106	SvREFCNT_dec (coro->rouse_cb);	2293	SvREFCNT_dec (coro->rouse_cb);
…		…
2331	if (PL_op->op_flags & OPf_STACKED)	2518	if (PL_op->op_flags & OPf_STACKED)
2332	{	2519	{
2333	if (items > slf_arga)	2520	if (items > slf_arga)
2334	{	2521	{
2335	slf_arga = items;	2522	slf_arga = items;
2336	free (slf_argv);	2523	Safefree (slf_argv);
2337	slf_argv = malloc (slf_arga * sizeof (SV *));	2524	New (0, slf_argv, slf_arga, SV *);
2338	}	2525	}
2339		2526
2340	slf_argc = items;	2527	slf_argc = items;
2341		2528
2342	for (i = 0; i < items; ++i)	2529	for (i = 0; i < items; ++i)
…		…
2629	{	2816	{
2630	if (items >= 2)	2817	if (items >= 2)
2631	{	2818	{
2632	/* callback form */	2819	/* callback form */
2633	AV *av = (AV *)SvRV (arg [0]);	2820	AV *av = (AV *)SvRV (arg [0]);
2634	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2821	SV *cb_cv = s_get_cv_croak (arg [1]);
2635		2822
2636	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));	2823	av_push (av, SvREFCNT_inc_NN (cb_cv));
2637		2824
2638	if (SvIVX (AvARRAY (av)[0]) > 0)	2825	if (SvIVX (AvARRAY (av)[0]) > 0)
2639	coro_semaphore_adjust (aTHX_ av, 0);	2826	coro_semaphore_adjust (aTHX_ av, 0);
2640		2827
2641	frame->prepare = prepare_nop;	2828	frame->prepare = prepare_nop;
…		…
2665	AvARRAY (av)[0] = AvARRAY (av)[1];	2852	AvARRAY (av)[0] = AvARRAY (av)[1];
2666	AvARRAY (av)[1] = cb;	2853	AvARRAY (av)[1] = cb;
2667		2854
2668	cb = av_shift (av);	2855	cb = av_shift (av);
2669		2856
		2857	if (SvTYPE (cb) == SVt_PVCV)
		2858	{
		2859	dSP;
		2860	PUSHMARK (SP);
		2861	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2862	PUTBACK;
		2863	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2864	}
		2865	else
		2866	{
2670	api_ready (aTHX_ cb);	2867	api_ready (aTHX_ cb);
2671	sv_setiv (cb, 0); /* signal waiter */	2868	sv_setiv (cb, 0); /* signal waiter */
		2869	}
		2870
2672	SvREFCNT_dec (cb);	2871	SvREFCNT_dec (cb);
2673		2872
2674	--count;	2873	--count;
2675	}	2874	}
2676	}	2875	}
…		…
2685	static void	2884	static void
2686	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2885	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2687	{	2886	{
2688	AV *av = (AV *)SvRV (arg [0]);	2887	AV *av = (AV *)SvRV (arg [0]);
2689		2888
		2889	if (items >= 2)
		2890	{
		2891	SV *cb_cv = s_get_cv_croak (arg [1]);
		2892	av_push (av, SvREFCNT_inc_NN (cb_cv));
		2893
2690	if (SvIVX (AvARRAY (av)[0]))	2894	if (SvIVX (AvARRAY (av)[0]))
		2895	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
		2896
		2897	frame->prepare = prepare_nop;
		2898	frame->check = slf_check_nop;
		2899	}
		2900	else if (SvIVX (AvARRAY (av)[0]))
2691	{	2901	{
2692	SvIVX (AvARRAY (av)[0]) = 0;	2902	SvIVX (AvARRAY (av)[0]) = 0;
2693	frame->prepare = prepare_nop;	2903	frame->prepare = prepare_nop;
2694	frame->check = slf_check_nop;	2904	frame->check = slf_check_nop;
2695	}	2905	}
2696	else	2906	else
2697	{	2907	{
2698	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */	2908	SV *waiter = newSVsv (coro_current); /* owned by signal av */
2699		2909
2700	av_push (av, waiter);	2910	av_push (av, waiter);
2701		2911
2702	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */	2912	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2703	frame->prepare = prepare_schedule;	2913	frame->prepare = prepare_schedule;
…		…
2721		2931
2722	static void	2932	static void
2723	coro_aio_callback (pTHX_ CV *cv)	2933	coro_aio_callback (pTHX_ CV *cv)
2724	{	2934	{
2725	dXSARGS;	2935	dXSARGS;
2726	AV *state = (AV *)GENSUB_ARG;	2936	AV *state = (AV *)S_GENSUB_ARG;
2727	SV *coro = av_pop (state);	2937	SV *coro = av_pop (state);
2728	SV *data_sv = newSV (sizeof (struct io_state));	2938	SV *data_sv = newSV (sizeof (struct io_state));
2729		2939
2730	av_extend (state, items - 1);	2940	av_extend (state, items - 1);
2731		2941
…		…
2845		3055
2846	for (i = 0; i < items; ++i)	3056	for (i = 0; i < items; ++i)
2847	PUSHs (arg [i]);	3057	PUSHs (arg [i]);
2848		3058
2849	/* now push the callback closure */	3059	/* now push the callback closure */
2850	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	3060	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2851		3061
2852	/* now call the AIO function - we assume our request is uncancelable */	3062	/* now call the AIO function - we assume our request is uncancelable */
2853	PUTBACK;	3063	PUTBACK;
2854	call_sv ((SV *)req, G_VOID | G_DISCARD);	3064	call_sv ((SV *)req, G_VOID | G_DISCARD);
2855	}	3065	}
2856		3066
2857	/* now that the requets is going, we loop toll we have a result */	3067	/* now that the request is going, we loop till we have a result */
2858	frame->data = (void *)state;	3068	frame->data = (void *)state;
2859	frame->prepare = prepare_schedule;	3069	frame->prepare = prepare_schedule;
2860	frame->check = slf_check_aio_req;	3070	frame->check = slf_check_aio_req;
2861	}	3071	}
2862		3072
…		…
2873	/*****************************************************************************/	3083	/*****************************************************************************/
2874		3084
2875	#if CORO_CLONE	3085	#if CORO_CLONE
2876	# include "clone.c"	3086	# include "clone.c"
2877	#endif	3087	#endif
		3088
		3089	/*****************************************************************************/
		3090
		3091	static SV *
		3092	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		3093	{
		3094	SV *coro_sv;
		3095	struct coro *coro;
		3096	MAGIC *mg;
		3097	HV *hv;
		3098	SV *cb;
		3099	int i;
		3100
		3101	if (argc > 0)
		3102	{
		3103	cb = s_get_cv_croak (argv [0]);
		3104
		3105	if (!is_coro)
		3106	{
		3107	if (CvISXSUB (cb))
		3108	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3109
		3110	if (!CvROOT (cb))
		3111	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3112	}
		3113	}
		3114
		3115	Newz (0, coro, 1, struct coro);
		3116	coro->args = newAV ();
		3117	coro->flags = CF_NEW;
		3118
		3119	if (coro_first) coro_first->prev = coro;
		3120	coro->next = coro_first;
		3121	coro_first = coro;
		3122
		3123	coro->hv = hv = newHV ();
		3124	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3125	mg->mg_flags |= MGf_DUP;
		3126	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3127
		3128	if (argc > 0)
		3129	{
		3130	av_extend (coro->args, argc + is_coro - 1);
		3131
		3132	if (is_coro)
		3133	{
		3134	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3135	cb = (SV *)cv_coro_run;
		3136	}
		3137
		3138	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3139
		3140	for (i = 1; i < argc; i++)
		3141	av_push (coro->args, newSVsv (argv [i]));
		3142	}
		3143
		3144	return coro_sv;
		3145	}
2878		3146
2879	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3147	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2880		3148
2881	PROTOTYPES: DISABLE	3149	PROTOTYPES: DISABLE
2882		3150
…		…
2935	coroapi.prepare_nop = prepare_nop;	3203	coroapi.prepare_nop = prepare_nop;
2936	coroapi.prepare_schedule = prepare_schedule;	3204	coroapi.prepare_schedule = prepare_schedule;
2937	coroapi.prepare_cede = prepare_cede;	3205	coroapi.prepare_cede = prepare_cede;
2938	coroapi.prepare_cede_notself = prepare_cede_notself;	3206	coroapi.prepare_cede_notself = prepare_cede_notself;
2939		3207
2940	{	3208	time_init (aTHX);
2941	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2942		3209
2943	if (!svp) croak ("Time::HiRes is required");
2944	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2945
2946	nvtime = INT2PTR (double (*)(), SvIV (*svp));
2947	}
2948
2949	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	3210	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2950	}	3211	}
2951		3212
2952	SV *	3213	SV *
2953	new (char *klass, ...)	3214	new (SV *klass, ...)
2954	ALIAS:	3215	ALIAS:
2955	Coro::new = 1	3216	Coro::new = 1
2956	CODE:	3217	CODE:
2957	{	3218	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2958	struct coro *coro;	3219	OUTPUT:
2959	MAGIC *mg;
2960	HV *hv;
2961	CV *cb;
2962	int i;
2963
2964	if (items > 1)
2965	{
2966	cb = coro_sv_2cv (aTHX_ ST (1));
2967
2968	if (!ix)
2969	{
2970	if (CvISXSUB (cb))
2971	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2972
2973	if (!CvROOT (cb))
2974	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2975	}
2976	}
2977
2978	Newz (0, coro, 1, struct coro);
2979	coro->args = newAV ();
2980	coro->flags = CF_NEW;
2981
2982	if (coro_first) coro_first->prev = coro;
2983	coro->next = coro_first;
2984	coro_first = coro;
2985
2986	coro->hv = hv = newHV ();
2987	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2988	mg->mg_flags |= MGf_DUP;
2989	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2990
2991	if (items > 1)
2992	{
2993	av_extend (coro->args, items - 1 + ix - 1);
2994
2995	if (ix)
2996	{
2997	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2998	cb = cv_coro_run;
2999	}
3000
3001	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3002
3003	for (i = 2; i < items; i++)
3004	av_push (coro->args, newSVsv (ST (i)));
3005	}
3006	}
3007	OUTPUT:
3008	RETVAL	3220	RETVAL
3009		3221
3010	void	3222	void
3011	transfer (...)	3223	transfer (...)
3012	PROTOTYPE: $$	3224	PROTOTYPE: $$
3013	CODE:	3225	CODE:
3014	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3226	CORO_EXECUTE_SLF_XS (slf_init_transfer);
3015
3016	bool
3017	_destroy (SV *coro_sv)
3018	CODE:
3019	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3020	OUTPUT:
3021	RETVAL
3022		3227
3023	void	3228	void
3024	_exit (int code)	3229	_exit (int code)
3025	PROTOTYPE: $	3230	PROTOTYPE: $
3026	CODE:	3231	CODE:
…		…
3149	RETVAL = boolSV (coro->flags & ix);	3354	RETVAL = boolSV (coro->flags & ix);
3150	OUTPUT:	3355	OUTPUT:
3151	RETVAL	3356	RETVAL
3152		3357
3153	void	3358	void
3154	throw (Coro::State self, SV *throw = &PL_sv_undef)	3359	throw (Coro::State self, SV *exception = &PL_sv_undef)
3155	PROTOTYPE: $;$	3360	PROTOTYPE: $;$
3156	CODE:	3361	CODE:
3157	{	3362	{
3158	struct coro *current = SvSTATE_current;	3363	struct coro *current = SvSTATE_current;
3159	SV **throwp = self == current ? &CORO_THROW : &self->except;	3364	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3160	SvREFCNT_dec (*throwp);	3365	SvREFCNT_dec (*exceptionp);
3161	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3366	SvGETMAGIC (exception);
		3367	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3162	}	3368	}
3163		3369
3164	void	3370	void
3165	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3371	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3166	PROTOTYPE: $;$	3372	PROTOTYPE: $;$
…		…
3221		3427
3222	void	3428	void
3223	cancel (Coro::State self)	3429	cancel (Coro::State self)
3224	CODE:	3430	CODE:
3225	coro_state_destroy (aTHX_ self);	3431	coro_state_destroy (aTHX_ self);
3226	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */	3432
		3433	SV *
		3434	enable_times (int enabled = enable_times)
		3435	CODE:
		3436	{
		3437	RETVAL = boolSV (enable_times);
		3438
		3439	if (enabled != enable_times)
		3440	{
		3441	enable_times = enabled;
		3442
		3443	coro_times_update ();
		3444	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3445	}
		3446	}
		3447	OUTPUT:
		3448	RETVAL
		3449
		3450	void
		3451	times (Coro::State self)
		3452	PPCODE:
		3453	{
		3454	struct coro *current = SvSTATE (coro_current);
		3455
		3456	if (expect_false (current == self))
		3457	{
		3458	coro_times_update ();
		3459	coro_times_add (SvSTATE (coro_current));
		3460	}
		3461
		3462	EXTEND (SP, 2);
		3463	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3464	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3465
		3466	if (expect_false (current == self))
		3467	coro_times_sub (SvSTATE (coro_current));
		3468	}
		3469
		3470	void
		3471	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3472	CODE:
		3473	{
		3474	struct coro *current = SvSTATE_current;
		3475
		3476	if (current == coro)
		3477	SWAP_SVS (current);
		3478
		3479	if (!coro->swap_sv)
		3480	coro->swap_sv = newAV ();
		3481
		3482	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3483	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3484
		3485	if (current == coro)
		3486	SWAP_SVS (current);
		3487	}
3227		3488
3228		3489
3229	MODULE = Coro::State PACKAGE = Coro	3490	MODULE = Coro::State PACKAGE = Coro
3230		3491
3231	BOOT:	3492	BOOT:
…		…
3241	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3502	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3242		3503
3243	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3504	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3244	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3505	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3245	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3506	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3246	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3507	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3247		3508
3248	coro_stash = gv_stashpv ("Coro", TRUE);	3509	coro_stash = gv_stashpv ("Coro", TRUE);
3249		3510
3250	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3511	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3251	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3512	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3252	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	3513	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3253	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	3514	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3254	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	3515	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3255	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	3516	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3256		3517
3257	{	3518	{
3258	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3519	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3259		3520
3260	coroapi.schedule = api_schedule;	3521	coroapi.schedule = api_schedule;
…		…
3270	sv_setiv (sv, (IV)&coroapi);	3531	sv_setiv (sv, (IV)&coroapi);
3271	SvREADONLY_on (sv);	3532	SvREADONLY_on (sv);
3272	}	3533	}
3273	}	3534	}
3274		3535
		3536	SV *
		3537	async (...)
		3538	PROTOTYPE: &@
		3539	CODE:
		3540	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3541	api_ready (aTHX_ RETVAL);
		3542	OUTPUT:
		3543	RETVAL
		3544
		3545	void
		3546	_destroy (Coro::State coro)
		3547	CODE:
		3548	/* used by the manager thread */
		3549	coro_state_destroy (aTHX_ coro);
		3550	coro_call_on_destroy (aTHX_ coro);
		3551
3275	void	3552	void
3276	terminate (...)	3553	terminate (...)
3277	CODE:	3554	CODE:
3278	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3555	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3556
		3557	void
		3558	cancel (...)
		3559	CODE:
		3560	CORO_EXECUTE_SLF_XS (slf_init_cancel);
3279		3561
3280	void	3562	void
3281	schedule (...)	3563	schedule (...)
3282	CODE:	3564	CODE:
3283	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3565	CORO_EXECUTE_SLF_XS (slf_init_schedule);
…		…
3312	void	3594	void
3313	_set_readyhook (SV *hook)	3595	_set_readyhook (SV *hook)
3314	PROTOTYPE: $	3596	PROTOTYPE: $
3315	CODE:	3597	CODE:
3316	SvREFCNT_dec (coro_readyhook);	3598	SvREFCNT_dec (coro_readyhook);
		3599	SvGETMAGIC (hook);
		3600	if (SvOK (hook))
		3601	{
3317	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3602	coro_readyhook = newSVsv (hook);
		3603	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3604	}
		3605	else
		3606	{
		3607	coro_readyhook = 0;
		3608	CORO_READYHOOK = 0;
		3609	}
3318		3610
3319	int	3611	int
3320	prio (Coro::State coro, int newprio = 0)	3612	prio (Coro::State coro, int newprio = 0)
3321	PROTOTYPE: $;$	3613	PROTOTYPE: $;$
3322	ALIAS:	3614	ALIAS:
…		…
3328	if (items > 1)	3620	if (items > 1)
3329	{	3621	{
3330	if (ix)	3622	if (ix)
3331	newprio = coro->prio - newprio;	3623	newprio = coro->prio - newprio;
3332		3624
3333	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3625	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3334	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3626	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3335		3627
3336	coro->prio = newprio;	3628	coro->prio = newprio;
3337	}	3629	}
3338	}	3630	}
3339	OUTPUT:	3631	OUTPUT:
…		…
3386	for (i = 1; i < items; ++i)	3678	for (i = 1; i < items; ++i)
3387	av_push (av, SvREFCNT_inc_NN (ST (i)));	3679	av_push (av, SvREFCNT_inc_NN (ST (i)));
3388		3680
3389	if ((SV *)hv == &PL_sv_undef)	3681	if ((SV *)hv == &PL_sv_undef)
3390	{	3682	{
3391	PUSHMARK (SP);	3683	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3392	EXTEND (SP, 2);
3393	PUSHs (sv_Coro);
3394	PUSHs ((SV *)cv_pool_handler);
3395	PUTBACK;
3396	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3397	SPAGAIN;
3398
3399	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3684	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3685	SvREFCNT_dec (sv);
3400	}	3686	}
3401		3687
3402	{	3688	{
3403	struct coro *coro = SvSTATE_hv (hv);	3689	struct coro *coro = SvSTATE_hv (hv);
3404		3690
…		…
3438	CODE:	3724	CODE:
3439	{	3725	{
3440	struct coro *coro = SvSTATE_current;	3726	struct coro *coro = SvSTATE_current;
3441	AV **avp = ix ? &coro->on_leave : &coro->on_enter;	3727	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3442		3728
3443	block = (SV *)coro_sv_2cv (aTHX_ block);	3729	block = s_get_cv_croak (block);
3444		3730
3445	if (!*avp)	3731	if (!*avp)
3446	*avp = newAV ();	3732	*avp = newAV ();
3447		3733
3448	av_push (*avp, SvREFCNT_inc (block));	3734	av_push (*avp, SvREFCNT_inc (block));
…		…
3465	MODULE = Coro::State PACKAGE = Coro::Semaphore	3751	MODULE = Coro::State PACKAGE = Coro::Semaphore
3466		3752
3467	SV *	3753	SV *
3468	new (SV *klass, SV *count = 0)	3754	new (SV *klass, SV *count = 0)
3469	CODE:	3755	CODE:
		3756	{
		3757	int semcnt = 1;
		3758
		3759	if (count)
		3760	{
		3761	SvGETMAGIC (count);
		3762
		3763	if (SvOK (count))
		3764	semcnt = SvIV (count);
		3765	}
		3766
3470	RETVAL = sv_bless (	3767	RETVAL = sv_bless (
3471	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),	3768	coro_waitarray_new (aTHX_ semcnt),
3472	GvSTASH (CvGV (cv))	3769	GvSTASH (CvGV (cv))
3473	);	3770	);
		3771	}
3474	OUTPUT:	3772	OUTPUT:
3475	RETVAL	3773	RETVAL
3476		3774
3477	# helper for Coro::Channel and others	3775	# helper for Coro::Channel and others
3478	SV *	3776	SV *
…		…
3636		3934
3637	void	3935	void
3638	_register (char *target, char *proto, SV *req)	3936	_register (char *target, char *proto, SV *req)
3639	CODE:	3937	CODE:
3640	{	3938	{
3641	CV *req_cv = coro_sv_2cv (aTHX_ req);	3939	SV *req_cv = s_get_cv_croak (req);
3642	/* newXSproto doesn't return the CV on 5.8 */	3940	/* newXSproto doesn't return the CV on 5.8 */
3643	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3941	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3644	sv_setpv ((SV *)slf_cv, proto);	3942	sv_setpv ((SV *)slf_cv, proto);
3645	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3943	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3646	}	3944	}
3647		3945
		3946	MODULE = Coro::State PACKAGE = Coro::Select
		3947
		3948	void
		3949	patch_pp_sselect ()
		3950	CODE:
		3951	if (!coro_old_pp_sselect)
		3952	{
		3953	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		3954	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		3955	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		3956	}
		3957
		3958	void
		3959	unpatch_pp_sselect ()
		3960	CODE:
		3961	if (coro_old_pp_sselect)
		3962	{
		3963	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		3964	coro_old_pp_sselect = 0;
		3965	}
		3966

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