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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.358 by root, Mon Jun 29 04:30:25 2009 UTC vs.
Revision 1.396 by root, Fri May 6 18:01:13 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
…		…
170	# define CORO_CLOCK_THREAD_CPUTIME_ID 3	121	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
171	# endif	122	# endif
172	#endif	123	#endif
173		124
174	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]);
175		127
176	/* we hijack an hopefully unused CV flag for our purposes */	128	/* we hijack an hopefully unused CV flag for our purposes */
177	#define CVf_SLF 0x4000	129	#define CVf_SLF 0x4000
178	static OP *pp_slf (pTHX);	130	static OP *pp_slf (pTHX);
179		131
…		…
200	static SV *sv_pool_size;	152	static SV *sv_pool_size;
201	static SV *sv_async_pool_idle; /* description string */	153	static SV *sv_async_pool_idle; /* description string */
202	static AV *av_async_pool; /* idle pool */	154	static AV *av_async_pool; /* idle pool */
203	static SV *sv_Coro; /* class string */	155	static SV *sv_Coro; /* class string */
204	static CV *cv_pool_handler;	156	static CV *cv_pool_handler;
205	static CV *cv_coro_state_new;
206		157
207	/* Coro::AnyEvent */	158	/* Coro::AnyEvent */
208	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;
209		166
210	static struct coro_cctx *cctx_first;	167	static struct coro_cctx *cctx_first;
211	static int cctx_count, cctx_idle;	168	static int cctx_count, cctx_idle;
212		169
213	enum {	170	enum {
…		…
239	int valgrind_id;	196	int valgrind_id;
240	#endif	197	#endif
241	unsigned char flags;	198	unsigned char flags;
242	} coro_cctx;	199	} coro_cctx;
243		200
244	coro_cctx *cctx_current; /* the currently running cctx */	201	static coro_cctx *cctx_current; /* the currently running cctx */
245		202
246	/*****************************************************************************/	203	/*****************************************************************************/
247		204
248	enum {	205	enum {
249	CF_RUNNING = 0x0001, /* coroutine is running */	206	CF_RUNNING = 0x0001, /* coroutine is running */
250	CF_READY = 0x0002, /* coroutine is ready */	207	CF_READY = 0x0002, /* coroutine is ready */
251	CF_NEW = 0x0004, /* has never been switched to */	208	CF_NEW = 0x0004, /* has never been switched to */
252	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	209	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
253	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */	210	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
		211	CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
254	};	212	};
255		213
256	/* the structure where most of the perl state is stored, overlaid on the cxstack */	214	/* the structure where most of the perl state is stored, overlaid on the cxstack */
257	typedef struct	215	typedef struct
258	{	216	{
…		…
284	CV *startcv; /* the CV to execute */	242	CV *startcv; /* the CV to execute */
285	AV *args; /* data associated with this coroutine (initial args) */	243	AV *args; /* data associated with this coroutine (initial args) */
286	int refcnt; /* coroutines are refcounted, yes */	244	int refcnt; /* coroutines are refcounted, yes */
287	int flags; /* CF_ flags */	245	int flags; /* CF_ flags */
288	HV *hv; /* the perl hash associated with this coro, if any */	246	HV *hv; /* the perl hash associated with this coro, if any */
289	void (*on_destroy)(pTHX_ struct coro *coro);	247	void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
290		248
291	/* statistics */	249	/* statistics */
292	int usecount; /* number of transfers to this coro */	250	int usecount; /* number of transfers to this coro */
293		251
294	/* coro process data */	252	/* coro process data */
…		…
303		261
304	/* on_enter/on_leave */	262	/* on_enter/on_leave */
305	AV *on_enter;	263	AV *on_enter;
306	AV *on_leave;	264	AV *on_leave;
307		265
		266	/* swap_sv */
		267	AV *swap_sv;
		268
		269	/* times */
		270	coro_ts t_cpu, t_real;
		271
308	/* linked list */	272	/* linked list */
309	struct coro *next, *prev;	273	struct coro *next, *prev;
310	};	274	};
311		275
312	typedef struct coro *Coro__State;	276	typedef struct coro *Coro__State;
313	typedef struct coro *Coro__State_or_hashref;	277	typedef struct coro *Coro__State_or_hashref;
314		278
315	/* the following variables are effectively part of the perl context */	279	/* the following variables are effectively part of the perl context */
316	/* and get copied between struct coro and these variables */	280	/* and get copied between struct coro and these variables */
317	/* the mainr easonw e don't support windows process emulation */	281	/* the main reason we don't support windows process emulation */
318	static struct CoroSLF slf_frame; /* the current slf frame */	282	static struct CoroSLF slf_frame; /* the current slf frame */
319		283
320	/** Coro ********************************************************************/	284	/** Coro ********************************************************************/
321		285
322	#define CORO_PRIO_MAX 3	286	#define CORO_PRIO_MAX 3
…		…
332	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */	296	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
333	static CV *cv_coro_run, *cv_coro_terminate;	297	static CV *cv_coro_run, *cv_coro_terminate;
334	static struct coro *coro_first;	298	static struct coro *coro_first;
335	#define coro_nready coroapi.nready	299	#define coro_nready coroapi.nready
336		300
		301	/** Coro::Select ************************************************************/
		302
		303	static OP *(*coro_old_pp_sselect) (pTHX);
		304	static SV *coro_select_select;
		305
		306	/* horrible hack, but if it works... */
		307	static OP *
		308	coro_pp_sselect (pTHX)
		309	{
		310	dSP;
		311	PUSHMARK (SP - 4); /* fake argument list */
		312	XPUSHs (coro_select_select);
		313	PUTBACK;
		314
		315	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		316	PL_op->op_flags |= OPf_STACKED;
		317	PL_op->op_private = 0;
		318	return PL_ppaddr [OP_ENTERSUB](aTHX);
		319	}
		320
		321	/** time stuff **************************************************************/
		322
		323	#ifdef HAS_GETTIMEOFDAY
		324
		325	static void
		326	coro_u2time (pTHX_ UV ret[2])
		327	{
		328	struct timeval tv;
		329	gettimeofday (&tv, 0);
		330
		331	ret [0] = tv.tv_sec;
		332	ret [1] = tv.tv_usec;
		333	}
		334
		335	static double
		336	coro_nvtime ()
		337	{
		338	struct timeval tv;
		339	gettimeofday (&tv, 0);
		340
		341	return tv.tv_sec + tv.tv_usec * 1e-6;
		342	}
		343
		344	static void
		345	time_init (pTHX)
		346	{
		347	nvtime = coro_nvtime;
		348	u2time = coro_u2time;
		349	}
		350
		351	#else
		352
		353	static void
		354	time_init (pTHX)
		355	{
		356	SV **svp;
		357
		358	require_pv ("Time/HiRes.pm");
		359
		360	svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		361
		362	if (!svp) croak ("Time::HiRes is required, but missing. Caught");
		363	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
		364
		365	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		366
		367	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		368	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
		369	}
		370
		371	#endif
		372
337	/** lowlevel stuff **********************************************************/	373	/** lowlevel stuff **********************************************************/
338		374
339	static SV *	375	static SV *
340	coro_get_sv (pTHX_ const char *name, int create)	376	coro_get_sv (pTHX_ const char *name, int create)
341	{	377	{
…		…
364	get_hv (name, create);	400	get_hv (name, create);
365	#endif	401	#endif
366	return get_hv (name, create);	402	return get_hv (name, create);
367	}	403	}
368		404
369	/* may croak */	405	INLINE void
370	INLINE CV *	406	coro_times_update ()
371	coro_sv_2cv (pTHX_ SV *sv)
372	{	407	{
373	HV *st;	408	#ifdef coro_clock_gettime
374	GV *gvp;	409	struct timespec ts;
375	CV *cv = sv_2cv (sv, &st, &gvp, 0);
376		410
377	if (!cv)	411	ts.tv_sec = ts.tv_nsec = 0;
378	croak ("code reference expected");	412	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		413	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
379		414
380	return cv;	415	ts.tv_sec = ts.tv_nsec = 0;
		416	coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
		417	time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
		418	#else
		419	dTHX;
		420	UV tv[2];
		421
		422	u2time (aTHX_ tv);
		423	time_real [0] = tv [0];
		424	time_real [1] = tv [1] * 1000;
		425	#endif
		426	}
		427
		428	INLINE void
		429	coro_times_add (struct coro *c)
		430	{
		431	c->t_real [1] += time_real [1];
		432	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
		433	c->t_real [0] += time_real [0];
		434
		435	c->t_cpu [1] += time_cpu [1];
		436	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
		437	c->t_cpu [0] += time_cpu [0];
		438	}
		439
		440	INLINE void
		441	coro_times_sub (struct coro *c)
		442	{
		443	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
		444	c->t_real [1] -= time_real [1];
		445	c->t_real [0] -= time_real [0];
		446
		447	if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
		448	c->t_cpu [1] -= time_cpu [1];
		449	c->t_cpu [0] -= time_cpu [0];
381	}	450	}
382		451
383	/*****************************************************************************/	452	/*****************************************************************************/
384	/* magic glue */	453	/* magic glue */
385		454
…		…
488	AV *padlist;	557	AV *padlist;
489	AV *av = (AV *)mg->mg_obj;	558	AV *av = (AV *)mg->mg_obj;
490		559
491	/* perl manages to free our internal AV and _then_ call us */	560	/* perl manages to free our internal AV and _then_ call us */
492	if (IN_DESTRUCT)	561	if (IN_DESTRUCT)
493	return;	562	return 0;
494		563
495	/* casting is fun. */	564	/* casting is fun. */
496	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	565	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
497	free_padlist (aTHX_ padlist);	566	free_padlist (aTHX_ padlist);
498		567
…		…
547	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	616	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
548	}	617	}
549		618
550	/** load & save, init *******************************************************/	619	/** load & save, init *******************************************************/
551		620
		621	/* swap sv heads, at least logically */
		622	static void
		623	swap_svs (pTHX_ Coro__State c)
		624	{
		625	int i;
		626
		627	for (i = 0; i <= AvFILLp (c->swap_sv); )
		628	{
		629	SV *a = AvARRAY (c->swap_sv)[i++];
		630	SV *b = AvARRAY (c->swap_sv)[i++];
		631
		632	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		633	SV tmp;
		634
		635	/* swap sv_any */
		636	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		637
		638	/* swap sv_flags */
		639	SvFLAGS (&tmp) = SvFLAGS (a);
		640	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		641	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		642
		643	#if PERL_VERSION_ATLEAST (5,10,0)
		644	/* perl 5.10 complicates this _quite_ a bit, but it also is
		645	* much faster, so no quarrels here. alternatively, we could
		646	* sv_upgrade to avoid this.
		647	*/
		648	{
		649	/* swap sv_u */
		650	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		651
		652	/* if SvANY points to the head, we need to adjust the pointers,
		653	* as the pointer for a still points to b, and maybe vice versa.
		654	*/
		655	#define svany_in_head(type) \
		656	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
		657
		658	if (svany_in_head (SvTYPE (a)))
		659	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		660
		661	if (svany_in_head (SvTYPE (b)))
		662	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		663	}
		664	#endif
		665	}
		666	}
		667
		668	#define SWAP_SVS(coro) \
		669	if (expect_false ((coro)->swap_sv)) \
		670	swap_svs (aTHX_ (coro))
		671
552	static void	672	static void
553	on_enterleave_call (pTHX_ SV *cb);	673	on_enterleave_call (pTHX_ SV *cb);
554		674
555	static void	675	static void
556	load_perl (pTHX_ Coro__State c)	676	load_perl (pTHX_ Coro__State c)
…		…
587	}	707	}
588		708
589	slf_frame = c->slf_frame;	709	slf_frame = c->slf_frame;
590	CORO_THROW = c->except;	710	CORO_THROW = c->except;
591		711
		712	if (expect_false (enable_times))
		713	{
		714	if (expect_false (!times_valid))
		715	coro_times_update ();
		716
		717	coro_times_sub (c);
		718	}
		719
592	if (expect_false (c->on_enter))	720	if (expect_false (c->on_enter))
593	{	721	{
594	int i;	722	int i;
595		723
596	for (i = 0; i <= AvFILLp (c->on_enter); ++i)	724	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
597	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);	725	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
598	}	726	}
		727
		728	SWAP_SVS (c);
599	}	729	}
600		730
601	static void	731	static void
602	save_perl (pTHX_ Coro__State c)	732	save_perl (pTHX_ Coro__State c)
603	{	733	{
		734	SWAP_SVS (c);
		735
604	if (expect_false (c->on_leave))	736	if (expect_false (c->on_leave))
605	{	737	{
606	int i;	738	int i;
607		739
608	for (i = AvFILLp (c->on_leave); i >= 0; --i)	740	for (i = AvFILLp (c->on_leave); i >= 0; --i)
609	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);	741	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
		742	}
		743
		744	times_valid = 0;
		745
		746	if (expect_false (enable_times))
		747	{
		748	coro_times_update (); times_valid = 1;
		749	coro_times_add (c);
610	}	750	}
611		751
612	c->except = CORO_THROW;	752	c->except = CORO_THROW;
613	c->slf_frame = slf_frame;	753	c->slf_frame = slf_frame;
614		754
…		…
663	/* we manually unroll here, as usually 2 slots is enough */	803	/* we manually unroll here, as usually 2 slots is enough */
664	if (SLOT_COUNT >= 1) CXINC;	804	if (SLOT_COUNT >= 1) CXINC;
665	if (SLOT_COUNT >= 2) CXINC;	805	if (SLOT_COUNT >= 2) CXINC;
666	if (SLOT_COUNT >= 3) CXINC;	806	if (SLOT_COUNT >= 3) CXINC;
667	{	807	{
668	int i;	808	unsigned int i;
669	for (i = 3; i < SLOT_COUNT; ++i)	809	for (i = 3; i < SLOT_COUNT; ++i)
670	CXINC;	810	CXINC;
671	}	811	}
672	cxstack_ix -= SLOT_COUNT; /* undo allocation */	812	cxstack_ix -= SLOT_COUNT; /* undo allocation */
673		813
…		…
907	slf_check_repeat (pTHX_ struct CoroSLF *frame)	1047	slf_check_repeat (pTHX_ struct CoroSLF *frame)
908	{	1048	{
909	return 1;	1049	return 1;
910	}	1050	}
911		1051
912	static UNOP coro_setup_op;	1052	static UNOP init_perl_op;
913		1053
914	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1054	static void NOINLINE /* noinline to keep it out of the transfer fast path */
915	coro_setup (pTHX_ struct coro *coro)	1055	init_perl (pTHX_ struct coro *coro)
916	{	1056	{
917	/*	1057	/*
918	* emulate part of the perl startup here.	1058	* emulate part of the perl startup here.
919	*/	1059	*/
920	coro_init_stacks (aTHX);	1060	coro_init_stacks (aTHX);
…		…
927	PL_comppad_name_fill = 0;	1067	PL_comppad_name_fill = 0;
928	PL_comppad_name_floor = 0;	1068	PL_comppad_name_floor = 0;
929	PL_curpm = 0;	1069	PL_curpm = 0;
930	PL_curpad = 0;	1070	PL_curpad = 0;
931	PL_localizing = 0;	1071	PL_localizing = 0;
932	PL_dirty = 0;
933	PL_restartop = 0;	1072	PL_restartop = 0;
934	#if PERL_VERSION_ATLEAST (5,10,0)	1073	#if PERL_VERSION_ATLEAST (5,10,0)
935	PL_parser = 0;	1074	PL_parser = 0;
936	#endif	1075	#endif
937	PL_hints = 0;	1076	PL_hints = 0;
…		…
969	*/	1108	*/
970	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1109	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
971	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1110	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
972		1111
973	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1112	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974	coro_setup_op.op_next = PL_op;	1113	init_perl_op.op_next = PL_op;
975	coro_setup_op.op_type = OP_ENTERSUB;	1114	init_perl_op.op_type = OP_ENTERSUB;
976	coro_setup_op.op_ppaddr = pp_slf;	1115	init_perl_op.op_ppaddr = pp_slf;
977	/* no flags etc. required, as an init function won't be called */	1116	/* no flags etc. required, as an init function won't be called */
978		1117
979	PL_op = (OP *)&coro_setup_op;	1118	PL_op = (OP *)&init_perl_op;
980		1119
981	/* copy throw, in case it was set before coro_setup */	1120	/* copy throw, in case it was set before init_perl */
982	CORO_THROW = coro->except;	1121	CORO_THROW = coro->except;
		1122
		1123	SWAP_SVS (coro);
		1124
		1125	if (expect_false (enable_times))
		1126	{
		1127	coro_times_update ();
		1128	coro_times_sub (coro);
		1129	}
983	}	1130	}
984		1131
985	static void	1132	static void
986	coro_unwind_stacks (pTHX)	1133	coro_unwind_stacks (pTHX)
987	{	1134	{
…		…
1002	dounwind (-1);	1149	dounwind (-1);
1003	}	1150	}
1004	}	1151	}
1005		1152
1006	static void	1153	static void
1007	coro_destruct_perl (pTHX_ struct coro *coro)	1154	destroy_perl (pTHX_ struct coro *coro)
1008	{	1155	{
1009	SV *svf [9];	1156	SV *svf [9];
1010		1157
1011	{	1158	{
1012	struct coro *current = SvSTATE_current;	1159	struct coro *current = SvSTATE_current;
1013		1160
1014	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));	1161	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1015		1162
1016	save_perl (aTHX_ current);	1163	save_perl (aTHX_ current);
		1164	SvRV_set (coro_current, (SV *)coro->hv); /* this will cause acroak in transfer_check */
1017	load_perl (aTHX_ coro);	1165	load_perl (aTHX_ coro);
1018		1166
1019	coro_unwind_stacks (aTHX);	1167	coro_unwind_stacks (aTHX);
1020	coro_destruct_stacks (aTHX);	1168	coro_destruct_stacks (aTHX);
		1169
		1170	/* restore swapped sv's */
		1171	SWAP_SVS (coro);
1021		1172
1022	// now save some sv's to be free'd later	1173	// now save some sv's to be free'd later
1023	svf [0] = GvSV (PL_defgv);	1174	svf [0] = GvSV (PL_defgv);
1024	svf [1] = (SV *)GvAV (PL_defgv);	1175	svf [1] = (SV *)GvAV (PL_defgv);
1025	svf [2] = GvSV (PL_errgv);	1176	svf [2] = GvSV (PL_errgv);
…		…
1029	svf [6] = (SV *)GvHV (PL_hintgv);	1180	svf [6] = (SV *)GvHV (PL_hintgv);
1030	svf [7] = PL_diehook;	1181	svf [7] = PL_diehook;
1031	svf [8] = PL_warnhook;	1182	svf [8] = PL_warnhook;
1032	assert (9 == sizeof (svf) / sizeof (*svf));	1183	assert (9 == sizeof (svf) / sizeof (*svf));
1033		1184
		1185	SvRV_set (coro_current, (SV *)current->hv);
1034	load_perl (aTHX_ current);	1186	load_perl (aTHX_ current);
1035	}	1187	}
1036		1188
1037	{	1189	{
1038	int i;	1190	unsigned int i;
1039		1191
1040	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)	1192	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1041	SvREFCNT_dec (svf [i]);	1193	SvREFCNT_dec (svf [i]);
1042		1194
1043	SvREFCNT_dec (coro->saved_deffh);	1195	SvREFCNT_dec (coro->saved_deffh);
…		…
1249	/* somebody or something will hit me for both perl_run and PL_restartop */	1401	/* somebody or something will hit me for both perl_run and PL_restartop */
1250	PL_restartop = PL_op;	1402	PL_restartop = PL_op;
1251	perl_run (PL_curinterp);	1403	perl_run (PL_curinterp);
1252	/*	1404	/*
1253	* Unfortunately, there is no way to get at the return values of the	1405	* Unfortunately, there is no way to get at the return values of the
1254	* coro body here, as perl_run destroys these	1406	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1407	* runtime errors here, as this is just a random interpreter, not a thread.
1255	*/	1408	*/
1256		1409
1257	/*	1410	/*
1258	* If perl-run returns we assume exit() was being called or the coro	1411	* If perl-run returns we assume exit() was being called or the coro
1259	* fell off the end, which seems to be the only valid (non-bug)	1412	* fell off the end, which seems to be the only valid (non-bug)
…		…
1346	cctx_destroy (coro_cctx *cctx)	1499	cctx_destroy (coro_cctx *cctx)
1347	{	1500	{
1348	if (!cctx)	1501	if (!cctx)
1349	return;	1502	return;
1350		1503
1351	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?	1504	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1352		1505
1353	--cctx_count;	1506	--cctx_count;
1354	coro_destroy (&cctx->cctx);	1507	coro_destroy (&cctx->cctx);
1355		1508
1356	/* coro_transfer creates new, empty cctx's */	1509	/* coro_transfer creates new, empty cctx's */
…		…
1466	if (expect_false (next->flags & CF_NEW))	1619	if (expect_false (next->flags & CF_NEW))
1467	{	1620	{
1468	/* need to start coroutine */	1621	/* need to start coroutine */
1469	next->flags &= ~CF_NEW;	1622	next->flags &= ~CF_NEW;
1470	/* setup coroutine call */	1623	/* setup coroutine call */
1471	coro_setup (aTHX_ next);	1624	init_perl (aTHX_ next);
1472	}	1625	}
1473	else	1626	else
1474	load_perl (aTHX_ next);	1627	load_perl (aTHX_ next);
1475		1628
1476	/* possibly untie and reuse the cctx */	1629	/* possibly untie and reuse the cctx */
…		…
1515	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1668	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1516	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1669	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1517		1670
1518	/** high level stuff ********************************************************/	1671	/** high level stuff ********************************************************/
1519		1672
1520	static int	1673	static void
1521	coro_state_destroy (pTHX_ struct coro *coro)	1674	coro_state_destroy (pTHX_ struct coro *coro)
1522	{	1675	{
1523	if (coro->flags & CF_DESTROYED)	1676	if (coro->flags & CF_DESTROYED)
1524	return 0;	1677	return;
1525		1678
		1679	/* this callback is reserved for slf functions needing to do cleanup */
1526	if (coro->on_destroy && !PL_dirty)	1680	if (coro->on_destroy && !PL_dirty)
1527	coro->on_destroy (aTHX_ coro);	1681	coro->on_destroy (aTHX_ coro);
		1682
		1683	/*
		1684	* The on_destroy above most likely is from an SLF call.
		1685	* Since by definition the SLF call will not finish when we destroy
		1686	* the coro, we will have to force-finish it here, otherwise
		1687	* cleanup functions cannot call SLF functions.
		1688	*/
		1689	coro->slf_frame.prepare = 0;
1528		1690
1529	coro->flags |= CF_DESTROYED;	1691	coro->flags |= CF_DESTROYED;
1530		1692
1531	if (coro->flags & CF_READY)	1693	if (coro->flags & CF_READY)
1532	{	1694	{
…		…
1539		1701
1540	if (coro->mainstack	1702	if (coro->mainstack
1541	&& coro->mainstack != main_mainstack	1703	&& coro->mainstack != main_mainstack
1542	&& coro->slot	1704	&& coro->slot
1543	&& !PL_dirty)	1705	&& !PL_dirty)
1544	coro_destruct_perl (aTHX_ coro);	1706	destroy_perl (aTHX_ coro);
		1707
		1708	if (coro->next) coro->next->prev = coro->prev;
		1709	if (coro->prev) coro->prev->next = coro->next;
		1710	if (coro == coro_first) coro_first = coro->next;
1545		1711
1546	cctx_destroy (coro->cctx);	1712	cctx_destroy (coro->cctx);
1547	SvREFCNT_dec (coro->startcv);	1713	SvREFCNT_dec (coro->startcv);
1548	SvREFCNT_dec (coro->args);	1714	SvREFCNT_dec (coro->args);
		1715	SvREFCNT_dec (coro->swap_sv);
1549	SvREFCNT_dec (CORO_THROW);	1716	SvREFCNT_dec (CORO_THROW);
1550
1551	if (coro->next) coro->next->prev = coro->prev;
1552	if (coro->prev) coro->prev->next = coro->next;
1553	if (coro == coro_first) coro_first = coro->next;
1554
1555	return 1;
1556	}	1717	}
1557		1718
1558	static int	1719	static int
1559	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1720	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1560	{	1721	{
…		…
1608		1769
1609	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1770	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1610	TRANSFER (ta, 1);	1771	TRANSFER (ta, 1);
1611	}	1772	}
1612		1773
1613	/*****************************************************************************/
1614	/* gensub: simple closure generation utility */
1615
1616	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1617
1618	/* create a closure from XS, returns a code reference */
1619	/* the arg can be accessed via GENSUB_ARG from the callback */
1620	/* the callback must use dXSARGS/XSRETURN */
1621	static SV *
1622	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1623	{
1624	CV *cv = (CV *)newSV (0);
1625
1626	sv_upgrade ((SV *)cv, SVt_PVCV);
1627
1628	CvANON_on (cv);
1629	CvISXSUB_on (cv);
1630	CvXSUB (cv) = xsub;
1631	GENSUB_ARG = arg;
1632
1633	return newRV_noinc ((SV *)cv);
1634	}
1635
1636	/** Coro ********************************************************************/	1774	/** Coro ********************************************************************/
1637		1775
1638	INLINE void	1776	INLINE void
1639	coro_enq (pTHX_ struct coro *coro)	1777	coro_enq (pTHX_ struct coro *coro)
1640	{	1778	{
…		…
1665	}	1803	}
1666		1804
1667	return 0;	1805	return 0;
1668	}	1806	}
1669		1807
		1808	static void
		1809	invoke_sv_ready_hook_helper (void)
		1810	{
		1811	dTHX;
		1812	dSP;
		1813
		1814	ENTER;
		1815	SAVETMPS;
		1816
		1817	PUSHMARK (SP);
		1818	PUTBACK;
		1819	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1820
		1821	FREETMPS;
		1822	LEAVE;
		1823	}
		1824
1670	static int	1825	static int
1671	api_ready (pTHX_ SV *coro_sv)	1826	api_ready (pTHX_ SV *coro_sv)
1672	{	1827	{
1673	struct coro *coro;
1674	SV *sv_hook;
1675	void (*xs_hook)(void);
1676
1677	coro = SvSTATE (coro_sv);	1828	struct coro *coro = SvSTATE (coro_sv);
1678		1829
1679	if (coro->flags & CF_READY)	1830	if (coro->flags & CF_READY)
1680	return 0;	1831	return 0;
1681		1832
1682	coro->flags |= CF_READY;	1833	coro->flags |= CF_READY;
1683		1834
1684	sv_hook = coro_nready ? 0 : coro_readyhook;
1685	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1686
1687	coro_enq (aTHX_ coro);	1835	coro_enq (aTHX_ coro);
1688	++coro_nready;
1689		1836
1690	if (sv_hook)	1837	if (!coro_nready++)
1691	{	1838	if (coroapi.readyhook)
1692	dSP;	1839	coroapi.readyhook ();
1693
1694	ENTER;
1695	SAVETMPS;
1696
1697	PUSHMARK (SP);
1698	PUTBACK;
1699	call_sv (sv_hook, G_VOID | G_DISCARD);
1700
1701	FREETMPS;
1702	LEAVE;
1703	}
1704
1705	if (xs_hook)
1706	xs_hook ();
1707		1840
1708	return 1;	1841	return 1;
1709	}	1842	}
1710		1843
1711	static int	1844	static int
…		…
1756	{	1889	{
1757	/* nothing to schedule: call the idle handler */	1890	/* nothing to schedule: call the idle handler */
1758	if (SvROK (sv_idle)	1891	if (SvROK (sv_idle)
1759	&& SvOBJECT (SvRV (sv_idle)))	1892	&& SvOBJECT (SvRV (sv_idle)))
1760	{	1893	{
		1894	if (SvRV (sv_idle) == SvRV (coro_current))
		1895	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1896
1761	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	1897	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1762	api_ready (aTHX_ SvRV (sv_idle));	1898	api_ready (aTHX_ SvRV (sv_idle));
1763	--coro_nready;	1899	--coro_nready;
1764	}	1900	}
1765	else	1901	else
1766	{	1902	{
		1903	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1767	dSP;	1904	dSP;
1768		1905
1769	ENTER;	1906	ENTER;
1770	SAVETMPS;	1907	SAVETMPS;
1771		1908
…		…
1881		2018
1882	static void	2019	static void
1883	coro_call_on_destroy (pTHX_ struct coro *coro)	2020	coro_call_on_destroy (pTHX_ struct coro *coro)
1884	{	2021	{
1885	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);	2022	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1886	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1887		2023
1888	if (on_destroyp)	2024	if (on_destroyp)
1889	{	2025	{
1890	AV *on_destroy = (AV *)SvRV (*on_destroyp);	2026	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		2027	AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
		2028	AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
1891		2029
1892	while (AvFILLp (on_destroy) >= 0)	2030	while (AvFILLp (on_destroy) >= 0)
1893	{	2031	{
1894	dSP; /* don't disturb outer sp */	2032	dSP; /* don't disturb outer sp */
1895	SV *cb = av_pop (on_destroy);	2033	SV *cb = av_pop (on_destroy);
…		…
1897	PUSHMARK (SP);	2035	PUSHMARK (SP);
1898		2036
1899	if (statusp)	2037	if (statusp)
1900	{	2038	{
1901	int i;	2039	int i;
1902	AV *status = (AV *)SvRV (*statusp);
1903	EXTEND (SP, AvFILLp (status) + 1);	2040	EXTEND (SP, AvFILLp (status) + 1);
1904		2041
1905	for (i = 0; i <= AvFILLp (status); ++i)	2042	for (i = 0; i <= AvFILLp (status); ++i)
1906	PUSHs (AvARRAY (status)[i]);	2043	PUSHs (AvARRAY (status)[i]);
1907	}	2044	}
…		…
1911	}	2048	}
1912	}	2049	}
1913	}	2050	}
1914		2051
1915	static void	2052	static void
1916	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2053	coro_set_status (HV *coro_hv, SV **arg, int items)
1917	{	2054	{
1918	int i;
1919	HV *hv = (HV *)SvRV (coro_current);
1920	AV *av = newAV ();	2055	AV *av = newAV ();
1921		2056
		2057	/* items are actually not so common, so optimise for this case */
		2058	if (items)
		2059	{
		2060	int i;
		2061
1922	av_extend (av, items - 1);	2062	av_extend (av, items - 1);
		2063
1923	for (i = 0; i < items; ++i)	2064	for (i = 0; i < items; ++i)
1924	av_push (av, SvREFCNT_inc_NN (arg [i]));	2065	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2066	}
1925		2067
1926	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2068	hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		2069	}
1927		2070
		2071	static void
		2072	slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
		2073	{
1928	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */	2074	av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1929	api_ready (aTHX_ sv_manager);	2075	api_ready (aTHX_ sv_manager);
1930		2076
1931	frame->prepare = prepare_schedule;	2077	frame->prepare = prepare_schedule;
1932	frame->check = slf_check_repeat;	2078	frame->check = slf_check_repeat;
1933		2079
1934	/* as a minor optimisation, we could unwind all stacks here */	2080	/* as a minor optimisation, we could unwind all stacks here */
1935	/* but that puts extra pressure on pp_slf, and is not worth much */	2081	/* but that puts extra pressure on pp_slf, and is not worth much */
1936	/*coro_unwind_stacks (aTHX);*/	2082	/*coro_unwind_stacks (aTHX);*/
		2083	}
		2084
		2085	static void
		2086	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2087	{
		2088	HV *coro_hv = (HV *)SvRV (coro_current);
		2089
		2090	coro_set_status (coro_hv, arg, items);
		2091	slf_init_terminate_cancel_common (frame, coro_hv);
		2092	}
		2093
		2094	static void
		2095	slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2096	{
		2097	HV *coro_hv;
		2098	struct coro *coro;
		2099
		2100	if (items <= 0)
		2101	croak ("Coro::cancel called without coro object,");
		2102
		2103	coro = SvSTATE (arg [0]);
		2104	coro_hv = coro->hv;
		2105
		2106	coro_set_status (coro_hv, arg + 1, items - 1);
		2107
		2108	if (expect_false (coro->flags & CF_NOCANCEL))
		2109	{
		2110	/* coro currently busy cancelling something, so just notify it */
		2111	coro->slf_frame.data = (void *)coro;
		2112
		2113	frame->prepare = prepare_nop;
		2114	frame->check = slf_check_nop;
		2115	}
		2116	else if (coro_hv == (HV *)SvRV (coro_current))
		2117	{
		2118	/* cancelling the current coro is allowed, and equals terminate */
		2119	slf_init_terminate_cancel_common (frame, coro_hv);
		2120	}
		2121	else
		2122	{
		2123	struct coro *self = SvSTATE_current;
		2124
		2125	/* otherwise we cancel directly, purely for speed reasons
		2126	* unfortunately, this requires some magic trickery, as
		2127	* somebody else could cancel us, so we have to fight the cancellation.
		2128	* this is ugly, and hopefully fully worth the extra speed.
		2129	* besides, I can't get the slow-but-safe version working...
		2130	*/
		2131	slf_frame.data = 0;
		2132	self->flags |= CF_NOCANCEL;
		2133
		2134	coro_state_destroy (aTHX_ coro);
		2135	coro_call_on_destroy (aTHX_ coro);
		2136
		2137	self->flags &= ~CF_NOCANCEL;
		2138
		2139	if (slf_frame.data)
		2140	{
		2141	/* while we were busy we have been cancelled, so terminate */
		2142	slf_init_terminate_cancel_common (frame, self->hv);
		2143	}
		2144	else
		2145	{
		2146	frame->prepare = prepare_nop;
		2147	frame->check = slf_check_nop;
		2148	}
		2149	}
1937	}	2150	}
1938		2151
1939	/*****************************************************************************/	2152	/*****************************************************************************/
1940	/* async pool handler */	2153	/* async pool handler */
1941		2154
…		…
2019		2232
2020	static void	2233	static void
2021	coro_rouse_callback (pTHX_ CV *cv)	2234	coro_rouse_callback (pTHX_ CV *cv)
2022	{	2235	{
2023	dXSARGS;	2236	dXSARGS;
2024	SV *data = (SV *)GENSUB_ARG;	2237	SV *data = (SV *)S_GENSUB_ARG;
2025		2238
2026	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2239	if (SvTYPE (SvRV (data)) != SVt_PVAV)
2027	{	2240	{
2028	/* first call, set args */	2241	/* first call, set args */
2029	SV *coro = SvRV (data);	2242	SV *coro = SvRV (data);
…		…
2095	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2308	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2096	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2309	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2097	croak ("Coro::rouse_wait called with illegal callback argument,");	2310	croak ("Coro::rouse_wait called with illegal callback argument,");
2098		2311
2099	{	2312	{
2100	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2313	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2101	SV *data = (SV *)GENSUB_ARG;	2314	SV *data = (SV *)S_GENSUB_ARG;
2102		2315
2103	frame->data = (void *)data;	2316	frame->data = (void *)data;
2104	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2317	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2105	frame->check = slf_check_rouse_wait;	2318	frame->check = slf_check_rouse_wait;
2106	}	2319	}
…		…
2110	coro_new_rouse_cb (pTHX)	2323	coro_new_rouse_cb (pTHX)
2111	{	2324	{
2112	HV *hv = (HV *)SvRV (coro_current);	2325	HV *hv = (HV *)SvRV (coro_current);
2113	struct coro *coro = SvSTATE_hv (hv);	2326	struct coro *coro = SvSTATE_hv (hv);
2114	SV *data = newRV_inc ((SV *)hv);	2327	SV *data = newRV_inc ((SV *)hv);
2115	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2328	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2116		2329
2117	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2330	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2118	SvREFCNT_dec (data); /* magicext increases the refcount */	2331	SvREFCNT_dec (data); /* magicext increases the refcount */
2119		2332
2120	SvREFCNT_dec (coro->rouse_cb);	2333	SvREFCNT_dec (coro->rouse_cb);
…		…
2345	if (PL_op->op_flags & OPf_STACKED)	2558	if (PL_op->op_flags & OPf_STACKED)
2346	{	2559	{
2347	if (items > slf_arga)	2560	if (items > slf_arga)
2348	{	2561	{
2349	slf_arga = items;	2562	slf_arga = items;
2350	free (slf_argv);	2563	Safefree (slf_argv);
2351	slf_argv = malloc (slf_arga * sizeof (SV *));	2564	New (0, slf_argv, slf_arga, SV *);
2352	}	2565	}
2353		2566
2354	slf_argc = items;	2567	slf_argc = items;
2355		2568
2356	for (i = 0; i < items; ++i)	2569	for (i = 0; i < items; ++i)
…		…
2643	{	2856	{
2644	if (items >= 2)	2857	if (items >= 2)
2645	{	2858	{
2646	/* callback form */	2859	/* callback form */
2647	AV *av = (AV *)SvRV (arg [0]);	2860	AV *av = (AV *)SvRV (arg [0]);
2648	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2861	SV *cb_cv = s_get_cv_croak (arg [1]);
2649		2862
2650	av_push (av, SvREFCNT_inc_NN (cb_cv));	2863	av_push (av, SvREFCNT_inc_NN (cb_cv));
2651		2864
2652	if (SvIVX (AvARRAY (av)[0]) > 0)	2865	if (SvIVX (AvARRAY (av)[0]) > 0)
2653	coro_semaphore_adjust (aTHX_ av, 0);	2866	coro_semaphore_adjust (aTHX_ av, 0);
…		…
2713	{	2926	{
2714	AV *av = (AV *)SvRV (arg [0]);	2927	AV *av = (AV *)SvRV (arg [0]);
2715		2928
2716	if (items >= 2)	2929	if (items >= 2)
2717	{	2930	{
2718	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2931	SV *cb_cv = s_get_cv_croak (arg [1]);
2719	av_push (av, SvREFCNT_inc_NN (cb_cv));	2932	av_push (av, SvREFCNT_inc_NN (cb_cv));
2720		2933
2721	if (SvIVX (AvARRAY (av)[0]))	2934	if (SvIVX (AvARRAY (av)[0]))
2722	coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */	2935	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2723		2936
2724	frame->prepare = prepare_nop;	2937	frame->prepare = prepare_nop;
2725	frame->check = slf_check_nop;	2938	frame->check = slf_check_nop;
2726	}	2939	}
2727	else if (SvIVX (AvARRAY (av)[0]))	2940	else if (SvIVX (AvARRAY (av)[0]))
…		…
2758		2971
2759	static void	2972	static void
2760	coro_aio_callback (pTHX_ CV *cv)	2973	coro_aio_callback (pTHX_ CV *cv)
2761	{	2974	{
2762	dXSARGS;	2975	dXSARGS;
2763	AV *state = (AV *)GENSUB_ARG;	2976	AV *state = (AV *)S_GENSUB_ARG;
2764	SV *coro = av_pop (state);	2977	SV *coro = av_pop (state);
2765	SV *data_sv = newSV (sizeof (struct io_state));	2978	SV *data_sv = newSV (sizeof (struct io_state));
2766		2979
2767	av_extend (state, items - 1);	2980	av_extend (state, items - 1);
2768		2981
…		…
2882		3095
2883	for (i = 0; i < items; ++i)	3096	for (i = 0; i < items; ++i)
2884	PUSHs (arg [i]);	3097	PUSHs (arg [i]);
2885		3098
2886	/* now push the callback closure */	3099	/* now push the callback closure */
2887	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	3100	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2888		3101
2889	/* now call the AIO function - we assume our request is uncancelable */	3102	/* now call the AIO function - we assume our request is uncancelable */
2890	PUTBACK;	3103	PUTBACK;
2891	call_sv ((SV *)req, G_VOID | G_DISCARD);	3104	call_sv ((SV *)req, G_VOID | G_DISCARD);
2892	}	3105	}
2893		3106
2894	/* now that the requets is going, we loop toll we have a result */	3107	/* now that the request is going, we loop till we have a result */
2895	frame->data = (void *)state;	3108	frame->data = (void *)state;
2896	frame->prepare = prepare_schedule;	3109	frame->prepare = prepare_schedule;
2897	frame->check = slf_check_aio_req;	3110	frame->check = slf_check_aio_req;
2898	}	3111	}
2899		3112
…		…
2910	/*****************************************************************************/	3123	/*****************************************************************************/
2911		3124
2912	#if CORO_CLONE	3125	#if CORO_CLONE
2913	# include "clone.c"	3126	# include "clone.c"
2914	#endif	3127	#endif
		3128
		3129	/*****************************************************************************/
		3130
		3131	static SV *
		3132	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		3133	{
		3134	SV *coro_sv;
		3135	struct coro *coro;
		3136	MAGIC *mg;
		3137	HV *hv;
		3138	SV *cb;
		3139	int i;
		3140
		3141	if (argc > 0)
		3142	{
		3143	cb = s_get_cv_croak (argv [0]);
		3144
		3145	if (!is_coro)
		3146	{
		3147	if (CvISXSUB (cb))
		3148	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3149
		3150	if (!CvROOT (cb))
		3151	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3152	}
		3153	}
		3154
		3155	Newz (0, coro, 1, struct coro);
		3156	coro->args = newAV ();
		3157	coro->flags = CF_NEW;
		3158
		3159	if (coro_first) coro_first->prev = coro;
		3160	coro->next = coro_first;
		3161	coro_first = coro;
		3162
		3163	coro->hv = hv = newHV ();
		3164	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3165	mg->mg_flags |= MGf_DUP;
		3166	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3167
		3168	if (argc > 0)
		3169	{
		3170	av_extend (coro->args, argc + is_coro - 1);
		3171
		3172	if (is_coro)
		3173	{
		3174	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3175	cb = (SV *)cv_coro_run;
		3176	}
		3177
		3178	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3179
		3180	for (i = 1; i < argc; i++)
		3181	av_push (coro->args, newSVsv (argv [i]));
		3182	}
		3183
		3184	return coro_sv;
		3185	}
2915		3186
2916	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3187	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2917		3188
2918	PROTOTYPES: DISABLE	3189	PROTOTYPES: DISABLE
2919		3190
…		…
2972	coroapi.prepare_nop = prepare_nop;	3243	coroapi.prepare_nop = prepare_nop;
2973	coroapi.prepare_schedule = prepare_schedule;	3244	coroapi.prepare_schedule = prepare_schedule;
2974	coroapi.prepare_cede = prepare_cede;	3245	coroapi.prepare_cede = prepare_cede;
2975	coroapi.prepare_cede_notself = prepare_cede_notself;	3246	coroapi.prepare_cede_notself = prepare_cede_notself;
2976		3247
2977	{	3248	time_init (aTHX);
2978	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2979
2980	if (!svp) croak ("Time::HiRes is required");
2981	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2982
2983	nvtime = INT2PTR (double (*)(), SvIV (*svp));
2984	}
2985		3249
2986	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));	3250	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2987	}	3251	}
2988		3252
2989	SV *	3253	SV *
2990	new (char *klass, ...)	3254	new (SV *klass, ...)
2991	ALIAS:	3255	ALIAS:
2992	Coro::new = 1	3256	Coro::new = 1
2993	CODE:	3257	CODE:
2994	{	3258	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2995	struct coro *coro;	3259	OUTPUT:
2996	MAGIC *mg;
2997	HV *hv;
2998	CV *cb;
2999	int i;
3000
3001	if (items > 1)
3002	{
3003	cb = coro_sv_2cv (aTHX_ ST (1));
3004
3005	if (!ix)
3006	{
3007	if (CvISXSUB (cb))
3008	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010	if (!CvROOT (cb))
3011	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012	}
3013	}
3014
3015	Newz (0, coro, 1, struct coro);
3016	coro->args = newAV ();
3017	coro->flags = CF_NEW;
3018
3019	if (coro_first) coro_first->prev = coro;
3020	coro->next = coro_first;
3021	coro_first = coro;
3022
3023	coro->hv = hv = newHV ();
3024	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3025	mg->mg_flags |= MGf_DUP;
3026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
3027
3028	if (items > 1)
3029	{
3030	av_extend (coro->args, items - 1 + ix - 1);
3031
3032	if (ix)
3033	{
3034	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035	cb = cv_coro_run;
3036	}
3037
3038	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
3040	for (i = 2; i < items; i++)
3041	av_push (coro->args, newSVsv (ST (i)));
3042	}
3043	}
3044	OUTPUT:
3045	RETVAL	3260	RETVAL
3046		3261
3047	void	3262	void
3048	transfer (...)	3263	transfer (...)
3049	PROTOTYPE: $$	3264	PROTOTYPE: $$
3050	CODE:	3265	CODE:
3051	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3266	CORO_EXECUTE_SLF_XS (slf_init_transfer);
3052
3053	bool
3054	_destroy (SV *coro_sv)
3055	CODE:
3056	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3057	OUTPUT:
3058	RETVAL
3059		3267
3060	void	3268	void
3061	_exit (int code)	3269	_exit (int code)
3062	PROTOTYPE: $	3270	PROTOTYPE: $
3063	CODE:	3271	CODE:
…		…
3139	CODE:	3347	CODE:
3140	{	3348	{
3141	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3349	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3142	{	3350	{
3143	struct coro *current = SvSTATE_current;	3351	struct coro *current = SvSTATE_current;
		3352	struct CoroSLF slf_save;
3144		3353
3145	if (current != coro)	3354	if (current != coro)
3146	{	3355	{
3147	PUTBACK;	3356	PUTBACK;
3148	save_perl (aTHX_ current);	3357	save_perl (aTHX_ current);
3149	load_perl (aTHX_ coro);	3358	load_perl (aTHX_ coro);
		3359	/* the coro is most likely in an active SLF call.
		3360	* while not strictly required (the code we execute is
		3361	* not allowed to call any SLF functions), it's cleaner
		3362	* to reinitialise the slf_frame and restore it later.
		3363	* This might one day allow us to actually do SLF calls
		3364	* from code executed here.
		3365	*/
		3366	slf_save = slf_frame;
		3367	slf_frame.prepare = 0;
3150	SPAGAIN;	3368	SPAGAIN;
3151	}	3369	}
3152		3370
3153	PUSHSTACK;	3371	PUSHSTACK;
3154		3372
…		…
3164	SPAGAIN;	3382	SPAGAIN;
3165		3383
3166	if (current != coro)	3384	if (current != coro)
3167	{	3385	{
3168	PUTBACK;	3386	PUTBACK;
		3387	slf_frame = slf_save;
3169	save_perl (aTHX_ coro);	3388	save_perl (aTHX_ coro);
3170	load_perl (aTHX_ current);	3389	load_perl (aTHX_ current);
3171	SPAGAIN;	3390	SPAGAIN;
3172	}	3391	}
3173	}	3392	}
…		…
3186	RETVAL = boolSV (coro->flags & ix);	3405	RETVAL = boolSV (coro->flags & ix);
3187	OUTPUT:	3406	OUTPUT:
3188	RETVAL	3407	RETVAL
3189		3408
3190	void	3409	void
3191	throw (Coro::State self, SV *throw = &PL_sv_undef)	3410	throw (Coro::State self, SV *exception = &PL_sv_undef)
3192	PROTOTYPE: $;$	3411	PROTOTYPE: $;$
3193	CODE:	3412	CODE:
3194	{	3413	{
3195	struct coro *current = SvSTATE_current;	3414	struct coro *current = SvSTATE_current;
3196	SV **throwp = self == current ? &CORO_THROW : &self->except;	3415	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3197	SvREFCNT_dec (*throwp);	3416	SvREFCNT_dec (*exceptionp);
3198	SvGETMAGIC (throw);	3417	SvGETMAGIC (exception);
3199	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3418	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3200	}	3419	}
3201		3420
3202	void	3421	void
3203	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3422	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3204	PROTOTYPE: $;$	3423	PROTOTYPE: $;$
…		…
3259		3478
3260	void	3479	void
3261	cancel (Coro::State self)	3480	cancel (Coro::State self)
3262	CODE:	3481	CODE:
3263	coro_state_destroy (aTHX_ self);	3482	coro_state_destroy (aTHX_ self);
3264	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */	3483
		3484	SV *
		3485	enable_times (int enabled = enable_times)
		3486	CODE:
		3487	{
		3488	RETVAL = boolSV (enable_times);
		3489
		3490	if (enabled != enable_times)
		3491	{
		3492	enable_times = enabled;
		3493
		3494	coro_times_update ();
		3495	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3496	}
		3497	}
		3498	OUTPUT:
		3499	RETVAL
		3500
		3501	void
		3502	times (Coro::State self)
		3503	PPCODE:
		3504	{
		3505	struct coro *current = SvSTATE (coro_current);
		3506
		3507	if (expect_false (current == self))
		3508	{
		3509	coro_times_update ();
		3510	coro_times_add (SvSTATE (coro_current));
		3511	}
		3512
		3513	EXTEND (SP, 2);
		3514	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3515	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3516
		3517	if (expect_false (current == self))
		3518	coro_times_sub (SvSTATE (coro_current));
		3519	}
		3520
		3521	void
		3522	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3523	CODE:
		3524	{
		3525	struct coro *current = SvSTATE_current;
		3526
		3527	if (current == coro)
		3528	SWAP_SVS (current);
		3529
		3530	if (!coro->swap_sv)
		3531	coro->swap_sv = newAV ();
		3532
		3533	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3534	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3535
		3536	if (current == coro)
		3537	SWAP_SVS (current);
		3538	}
3265		3539
3266		3540
3267	MODULE = Coro::State PACKAGE = Coro	3541	MODULE = Coro::State PACKAGE = Coro
3268		3542
3269	BOOT:	3543	BOOT:
…		…
3279	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3553	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3280		3554
3281	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3555	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3282	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3556	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3283	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3557	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3284	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3558	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3285		3559
3286	coro_stash = gv_stashpv ("Coro", TRUE);	3560	coro_stash = gv_stashpv ("Coro", TRUE);
3287		3561
3288	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));	3562	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3289	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));	3563	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3290	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));	3564	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
…		…
3308	sv_setiv (sv, (IV)&coroapi);	3582	sv_setiv (sv, (IV)&coroapi);
3309	SvREADONLY_on (sv);	3583	SvREADONLY_on (sv);
3310	}	3584	}
3311	}	3585	}
3312		3586
		3587	SV *
		3588	async (...)
		3589	PROTOTYPE: &@
		3590	CODE:
		3591	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3592	api_ready (aTHX_ RETVAL);
		3593	OUTPUT:
		3594	RETVAL
		3595
		3596	void
		3597	_destroy (Coro::State coro)
		3598	CODE:
		3599	/* used by the manager thread */
		3600	coro_state_destroy (aTHX_ coro);
		3601	coro_call_on_destroy (aTHX_ coro);
		3602
3313	void	3603	void
3314	terminate (...)	3604	terminate (...)
3315	CODE:	3605	CODE:
3316	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3606	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3607
		3608	void
		3609	cancel (...)
		3610	CODE:
		3611	CORO_EXECUTE_SLF_XS (slf_init_cancel);
3317		3612
3318	void	3613	void
3319	schedule (...)	3614	schedule (...)
3320	CODE:	3615	CODE:
3321	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3616	CORO_EXECUTE_SLF_XS (slf_init_schedule);
…		…
3351	_set_readyhook (SV *hook)	3646	_set_readyhook (SV *hook)
3352	PROTOTYPE: $	3647	PROTOTYPE: $
3353	CODE:	3648	CODE:
3354	SvREFCNT_dec (coro_readyhook);	3649	SvREFCNT_dec (coro_readyhook);
3355	SvGETMAGIC (hook);	3650	SvGETMAGIC (hook);
		3651	if (SvOK (hook))
		3652	{
3356	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3653	coro_readyhook = newSVsv (hook);
		3654	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3655	}
		3656	else
		3657	{
		3658	coro_readyhook = 0;
		3659	CORO_READYHOOK = 0;
		3660	}
3357		3661
3358	int	3662	int
3359	prio (Coro::State coro, int newprio = 0)	3663	prio (Coro::State coro, int newprio = 0)
3360	PROTOTYPE: $;$	3664	PROTOTYPE: $;$
3361	ALIAS:	3665	ALIAS:
…		…
3367	if (items > 1)	3671	if (items > 1)
3368	{	3672	{
3369	if (ix)	3673	if (ix)
3370	newprio = coro->prio - newprio;	3674	newprio = coro->prio - newprio;
3371		3675
3372	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3676	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3373	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3677	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3374		3678
3375	coro->prio = newprio;	3679	coro->prio = newprio;
3376	}	3680	}
3377	}	3681	}
3378	OUTPUT:	3682	OUTPUT:
…		…
3425	for (i = 1; i < items; ++i)	3729	for (i = 1; i < items; ++i)
3426	av_push (av, SvREFCNT_inc_NN (ST (i)));	3730	av_push (av, SvREFCNT_inc_NN (ST (i)));
3427		3731
3428	if ((SV *)hv == &PL_sv_undef)	3732	if ((SV *)hv == &PL_sv_undef)
3429	{	3733	{
3430	PUSHMARK (SP);	3734	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3431	EXTEND (SP, 2);
3432	PUSHs (sv_Coro);
3433	PUSHs ((SV *)cv_pool_handler);
3434	PUTBACK;
3435	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3436	SPAGAIN;
3437
3438	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3735	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3736	SvREFCNT_dec (sv);
3439	}	3737	}
3440		3738
3441	{	3739	{
3442	struct coro *coro = SvSTATE_hv (hv);	3740	struct coro *coro = SvSTATE_hv (hv);
3443		3741
…		…
3477	CODE:	3775	CODE:
3478	{	3776	{
3479	struct coro *coro = SvSTATE_current;	3777	struct coro *coro = SvSTATE_current;
3480	AV **avp = ix ? &coro->on_leave : &coro->on_enter;	3778	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3481		3779
3482	block = (SV *)coro_sv_2cv (aTHX_ block);	3780	block = s_get_cv_croak (block);
3483		3781
3484	if (!*avp)	3782	if (!*avp)
3485	*avp = newAV ();	3783	*avp = newAV ();
3486		3784
3487	av_push (*avp, SvREFCNT_inc (block));	3785	av_push (*avp, SvREFCNT_inc (block));
…		…
3687		3985
3688	void	3986	void
3689	_register (char *target, char *proto, SV *req)	3987	_register (char *target, char *proto, SV *req)
3690	CODE:	3988	CODE:
3691	{	3989	{
3692	CV *req_cv = coro_sv_2cv (aTHX_ req);	3990	SV *req_cv = s_get_cv_croak (req);
3693	/* newXSproto doesn't return the CV on 5.8 */	3991	/* newXSproto doesn't return the CV on 5.8 */
3694	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3992	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3695	sv_setpv ((SV *)slf_cv, proto);	3993	sv_setpv ((SV *)slf_cv, proto);
3696	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3994	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3697	}	3995	}
3698		3996
		3997	MODULE = Coro::State PACKAGE = Coro::Select
		3998
		3999	void
		4000	patch_pp_sselect ()
		4001	CODE:
		4002	if (!coro_old_pp_sselect)
		4003	{
		4004	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		4005	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		4006	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		4007	}
		4008
		4009	void
		4010	unpatch_pp_sselect ()
		4011	CODE:
		4012	if (coro_old_pp_sselect)
		4013	{
		4014	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		4015	coro_old_pp_sselect = 0;
		4016	}
		4017

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