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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.337 by root, Fri Dec 5 18:26:10 2008 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
…		…
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 {
…		…
229	int valgrind_id;	196	int valgrind_id;
230	#endif	197	#endif
231	unsigned char flags;	198	unsigned char flags;
232	} coro_cctx;	199	} coro_cctx;
233		200
234	coro_cctx *cctx_current; /* the currently running cctx */	201	static coro_cctx *cctx_current; /* the currently running cctx */
235		202
236	/*****************************************************************************/	203	/*****************************************************************************/
237		204
238	enum {	205	enum {
239	CF_RUNNING = 0x0001, /* coroutine is running */	206	CF_RUNNING = 0x0001, /* coroutine is running */
240	CF_READY = 0x0002, /* coroutine is ready */	207	CF_READY = 0x0002, /* coroutine is ready */
241	CF_NEW = 0x0004, /* has never been switched to */	208	CF_NEW = 0x0004, /* has never been switched to */
242	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	209	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		210	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
		211	CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
243	};	212	};
244		213
245	/* 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 */
246	typedef struct	215	typedef struct
247	{	216	{
…		…
260	/* this is a structure representing a perl-level coroutine */	229	/* this is a structure representing a perl-level coroutine */
261	struct coro {	230	struct coro {
262	/* the C coroutine allocated to this perl coroutine, if any */	231	/* the C coroutine allocated to this perl coroutine, if any */
263	coro_cctx *cctx;	232	coro_cctx *cctx;
264		233
		234	/* ready queue */
		235	struct coro *next_ready;
		236
265	/* state data */	237	/* state data */
266	struct CoroSLF slf_frame; /* saved slf frame */	238	struct CoroSLF slf_frame; /* saved slf frame */
267	AV *mainstack;	239	AV *mainstack;
268	perl_slots *slot; /* basically the saved sp */	240	perl_slots *slot; /* basically the saved sp */
269		241
270	CV *startcv; /* the CV to execute */	242	CV *startcv; /* the CV to execute */
271	AV *args; /* data associated with this coroutine (initial args) */	243	AV *args; /* data associated with this coroutine (initial args) */
272	int refcnt; /* coroutines are refcounted, yes */	244	int refcnt; /* coroutines are refcounted, yes */
273	int flags; /* CF_ flags */	245	int flags; /* CF_ flags */
274	HV *hv; /* the perl hash associated with this coro, if any */	246	HV *hv; /* the perl hash associated with this coro, if any */
275	void (*on_destroy)(pTHX_ struct coro *coro);	247	void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
276		248
277	/* statistics */	249	/* statistics */
278	int usecount; /* number of transfers to this coro */	250	int usecount; /* number of transfers to this coro */
279		251
280	/* coro process data */	252	/* coro process data */
…		…
285	/* async_pool */	257	/* async_pool */
286	SV *saved_deffh;	258	SV *saved_deffh;
287	SV *invoke_cb;	259	SV *invoke_cb;
288	AV *invoke_av;	260	AV *invoke_av;
289		261
		262	/* on_enter/on_leave */
		263	AV *on_enter;
		264	AV *on_leave;
		265
		266	/* swap_sv */
		267	AV *swap_sv;
		268
		269	/* times */
		270	coro_ts t_cpu, t_real;
		271
290	/* linked list */	272	/* linked list */
291	struct coro *next, *prev;	273	struct coro *next, *prev;
292	};	274	};
293		275
294	typedef struct coro *Coro__State;	276	typedef struct coro *Coro__State;
295	typedef struct coro *Coro__State_or_hashref;	277	typedef struct coro *Coro__State_or_hashref;
296		278
297	/* the following variables are effectively part of the perl context */	279	/* the following variables are effectively part of the perl context */
298	/* and get copied between struct coro and these variables */	280	/* and get copied between struct coro and these variables */
299	/* the mainr easonw e don't support windows process emulation */	281	/* the main reason we don't support windows process emulation */
300	static struct CoroSLF slf_frame; /* the current slf frame */	282	static struct CoroSLF slf_frame; /* the current slf frame */
301		283
302	/** Coro ********************************************************************/	284	/** Coro ********************************************************************/
303		285
304	#define PRIO_MAX 3	286	#define CORO_PRIO_MAX 3
305	#define PRIO_HIGH 1	287	#define CORO_PRIO_HIGH 1
306	#define PRIO_NORMAL 0	288	#define CORO_PRIO_NORMAL 0
307	#define PRIO_LOW -1	289	#define CORO_PRIO_LOW -1
308	#define PRIO_IDLE -3	290	#define CORO_PRIO_IDLE -3
309	#define PRIO_MIN -4	291	#define CORO_PRIO_MIN -4
310		292
311	/* for Coro.pm */	293	/* for Coro.pm */
312	static SV *coro_current;	294	static SV *coro_current;
313	static SV *coro_readyhook;	295	static SV *coro_readyhook;
314	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	296	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
315	static CV *cv_coro_run, *cv_coro_terminate;	297	static CV *cv_coro_run, *cv_coro_terminate;
316	static struct coro *coro_first;	298	static struct coro *coro_first;
317	#define coro_nready coroapi.nready	299	#define coro_nready coroapi.nready
		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
318		372
319	/** lowlevel stuff **********************************************************/	373	/** lowlevel stuff **********************************************************/
320		374
321	static SV *	375	static SV *
322	coro_get_sv (pTHX_ const char *name, int create)	376	coro_get_sv (pTHX_ const char *name, int create)
…		…
346	get_hv (name, create);	400	get_hv (name, create);
347	#endif	401	#endif
348	return get_hv (name, create);	402	return get_hv (name, create);
349	}	403	}
350		404
351	/* may croak */	405	INLINE void
352	INLINE CV *	406	coro_times_update ()
353	coro_sv_2cv (pTHX_ SV *sv)
354	{	407	{
355	HV *st;	408	#ifdef coro_clock_gettime
356	GV *gvp;	409	struct timespec ts;
357	return sv_2cv (sv, &st, &gvp, 0);	410
		411	ts.tv_sec = ts.tv_nsec = 0;
		412	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		413	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
		414
		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];
358	}	450	}
359		451
360	/*****************************************************************************/	452	/*****************************************************************************/
361	/* magic glue */	453	/* magic glue */
362		454
…		…
462	static int	554	static int
463	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)	555	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
464	{	556	{
465	AV *padlist;	557	AV *padlist;
466	AV *av = (AV *)mg->mg_obj;	558	AV *av = (AV *)mg->mg_obj;
		559
		560	/* perl manages to free our internal AV and _then_ call us */
		561	if (IN_DESTRUCT)
		562	return 0;
467		563
468	/* casting is fun. */	564	/* casting is fun. */
469	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	565	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
470	free_padlist (aTHX_ padlist);	566	free_padlist (aTHX_ padlist);
471		567
…		…
520	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	616	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
521	}	617	}
522		618
523	/** load & save, init *******************************************************/	619	/** load & save, init *******************************************************/
524		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
		672	static void
		673	on_enterleave_call (pTHX_ SV *cb);
		674
525	static void	675	static void
526	load_perl (pTHX_ Coro__State c)	676	load_perl (pTHX_ Coro__State c)
527	{	677	{
528	perl_slots *slot = c->slot;	678	perl_slots *slot = c->slot;
529	c->slot = 0;	679	c->slot = 0;
…		…
556	PUTBACK;	706	PUTBACK;
557	}	707	}
558		708
559	slf_frame = c->slf_frame;	709	slf_frame = c->slf_frame;
560	CORO_THROW = c->except;	710	CORO_THROW = c->except;
		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
		720	if (expect_false (c->on_enter))
		721	{
		722	int i;
		723
		724	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
		725	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
		726	}
		727
		728	SWAP_SVS (c);
561	}	729	}
562		730
563	static void	731	static void
564	save_perl (pTHX_ Coro__State c)	732	save_perl (pTHX_ Coro__State c)
565	{	733	{
		734	SWAP_SVS (c);
		735
		736	if (expect_false (c->on_leave))
		737	{
		738	int i;
		739
		740	for (i = AvFILLp (c->on_leave); i >= 0; --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);
		750	}
		751
566	c->except = CORO_THROW;	752	c->except = CORO_THROW;
567	c->slf_frame = slf_frame;	753	c->slf_frame = slf_frame;
568		754
569	{	755	{
570	dSP;	756	dSP;
…		…
583	{	769	{
584	while (expect_true (cxix >= 0))	770	while (expect_true (cxix >= 0))
585	{	771	{
586	PERL_CONTEXT *cx = &ccstk[cxix--];	772	PERL_CONTEXT *cx = &ccstk[cxix--];
587		773
588	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))	774	if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
589	{	775	{
590	CV *cv = cx->blk_sub.cv;	776	CV *cv = cx->blk_sub.cv;
591		777
592	if (expect_true (CvDEPTH (cv)))	778	if (expect_true (CvDEPTH (cv)))
593	{	779	{
…		…
617	/* we manually unroll here, as usually 2 slots is enough */	803	/* we manually unroll here, as usually 2 slots is enough */
618	if (SLOT_COUNT >= 1) CXINC;	804	if (SLOT_COUNT >= 1) CXINC;
619	if (SLOT_COUNT >= 2) CXINC;	805	if (SLOT_COUNT >= 2) CXINC;
620	if (SLOT_COUNT >= 3) CXINC;	806	if (SLOT_COUNT >= 3) CXINC;
621	{	807	{
622	int i;	808	unsigned int i;
623	for (i = 3; i < SLOT_COUNT; ++i)	809	for (i = 3; i < SLOT_COUNT; ++i)
624	CXINC;	810	CXINC;
625	}	811	}
626	cxstack_ix -= SLOT_COUNT; /* undo allocation */	812	cxstack_ix -= SLOT_COUNT; /* undo allocation */
627		813
…		…
769	#endif	955	#endif
770		956
771	/*	957	/*
772	* This overrides the default magic get method of %SIG elements.	958	* This overrides the default magic get method of %SIG elements.
773	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	959	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
774	* and instead of tryign to save and restore the hash elements, we just provide	960	* and instead of trying to save and restore the hash elements, we just provide
775	* readback here.	961	* readback here.
776	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
777	* not expecting this to actually change the hook. This is a potential problem
778	* when a schedule happens then, but we ignore this.
779	*/	962	*/
780	static int	963	static int
781	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)	964	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
782	{	965	{
783	const char *s = MgPV_nolen_const (mg);	966	const char *s = MgPV_nolen_const (mg);
…		…
836	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;	1019	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
837		1020
838	if (svp)	1021	if (svp)
839	{	1022	{
840	SV *old = *svp;	1023	SV *old = *svp;
841	*svp = newSVsv (sv);	1024	*svp = SvOK (sv) ? newSVsv (sv) : 0;
842	SvREFCNT_dec (old);	1025	SvREFCNT_dec (old);
843	return 0;	1026	return 0;
844	}	1027	}
845	}	1028	}
846		1029
…		…
864	slf_check_repeat (pTHX_ struct CoroSLF *frame)	1047	slf_check_repeat (pTHX_ struct CoroSLF *frame)
865	{	1048	{
866	return 1;	1049	return 1;
867	}	1050	}
868		1051
869	static UNOP coro_setup_op;	1052	static UNOP init_perl_op;
870		1053
871	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 */
872	coro_setup (pTHX_ struct coro *coro)	1055	init_perl (pTHX_ struct coro *coro)
873	{	1056	{
874	/*	1057	/*
875	* emulate part of the perl startup here.	1058	* emulate part of the perl startup here.
876	*/	1059	*/
877	coro_init_stacks (aTHX);	1060	coro_init_stacks (aTHX);
…		…
884	PL_comppad_name_fill = 0;	1067	PL_comppad_name_fill = 0;
885	PL_comppad_name_floor = 0;	1068	PL_comppad_name_floor = 0;
886	PL_curpm = 0;	1069	PL_curpm = 0;
887	PL_curpad = 0;	1070	PL_curpad = 0;
888	PL_localizing = 0;	1071	PL_localizing = 0;
889	PL_dirty = 0;
890	PL_restartop = 0;	1072	PL_restartop = 0;
891	#if PERL_VERSION_ATLEAST (5,10,0)	1073	#if PERL_VERSION_ATLEAST (5,10,0)
892	PL_parser = 0;	1074	PL_parser = 0;
893	#endif	1075	#endif
894	PL_hints = 0;	1076	PL_hints = 0;
…		…
926	*/	1108	*/
927	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 */
928	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 */
929		1111
930	/* 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 */
931	coro_setup_op.op_next = PL_op;	1113	init_perl_op.op_next = PL_op;
932	coro_setup_op.op_type = OP_ENTERSUB;	1114	init_perl_op.op_type = OP_ENTERSUB;
933	coro_setup_op.op_ppaddr = pp_slf;	1115	init_perl_op.op_ppaddr = pp_slf;
934	/* 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 */
935		1117
936	PL_op = (OP *)&coro_setup_op;	1118	PL_op = (OP *)&init_perl_op;
937		1119
938	/* copy throw, in case it was set before coro_setup */	1120	/* copy throw, in case it was set before init_perl */
939	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	}
940	}	1130	}
941		1131
942	static void	1132	static void
943	coro_unwind_stacks (pTHX)	1133	coro_unwind_stacks (pTHX)
944	{	1134	{
…		…
959	dounwind (-1);	1149	dounwind (-1);
960	}	1150	}
961	}	1151	}
962		1152
963	static void	1153	static void
964	coro_destruct_perl (pTHX_ struct coro *coro)	1154	destroy_perl (pTHX_ struct coro *coro)
965	{	1155	{
		1156	SV *svf [9];
		1157
		1158	{
		1159	struct coro *current = SvSTATE_current;
		1160
		1161	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
		1162
		1163	save_perl (aTHX_ current);
		1164	SvRV_set (coro_current, (SV *)coro->hv); /* this will cause acroak in transfer_check */
		1165	load_perl (aTHX_ coro);
		1166
966	coro_unwind_stacks (aTHX);	1167	coro_unwind_stacks (aTHX);
		1168	coro_destruct_stacks (aTHX);
967		1169
968	SvREFCNT_dec (GvSV (PL_defgv));	1170	/* restore swapped sv's */
969	SvREFCNT_dec (GvAV (PL_defgv));	1171	SWAP_SVS (coro);
970	SvREFCNT_dec (GvSV (PL_errgv));
971	SvREFCNT_dec (PL_defoutgv);
972	SvREFCNT_dec (PL_rs);
973	SvREFCNT_dec (GvSV (irsgv));
974	SvREFCNT_dec (GvHV (PL_hintgv));
975		1172
976	SvREFCNT_dec (PL_diehook);	1173	// now save some sv's to be free'd later
977	SvREFCNT_dec (PL_warnhook);	1174	svf [0] = GvSV (PL_defgv);
		1175	svf [1] = (SV *)GvAV (PL_defgv);
		1176	svf [2] = GvSV (PL_errgv);
		1177	svf [3] = (SV *)PL_defoutgv;
		1178	svf [4] = PL_rs;
		1179	svf [5] = GvSV (irsgv);
		1180	svf [6] = (SV *)GvHV (PL_hintgv);
		1181	svf [7] = PL_diehook;
		1182	svf [8] = PL_warnhook;
		1183	assert (9 == sizeof (svf) / sizeof (*svf));
		1184
		1185	SvRV_set (coro_current, (SV *)current->hv);
		1186	load_perl (aTHX_ current);
978		1187	}
		1188
		1189	{
		1190	unsigned int i;
		1191
		1192	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
		1193	SvREFCNT_dec (svf [i]);
		1194
979	SvREFCNT_dec (coro->saved_deffh);	1195	SvREFCNT_dec (coro->saved_deffh);
980	SvREFCNT_dec (coro->rouse_cb);	1196	SvREFCNT_dec (coro->rouse_cb);
981	SvREFCNT_dec (coro->invoke_cb);	1197	SvREFCNT_dec (coro->invoke_cb);
982	SvREFCNT_dec (coro->invoke_av);	1198	SvREFCNT_dec (coro->invoke_av);
983		1199	}
984	coro_destruct_stacks (aTHX);
985	}	1200	}
986		1201
987	INLINE void	1202	INLINE void
988	free_coro_mortal (pTHX)	1203	free_coro_mortal (pTHX)
989	{	1204	{
…		…
1186	/* 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 */
1187	PL_restartop = PL_op;	1402	PL_restartop = PL_op;
1188	perl_run (PL_curinterp);	1403	perl_run (PL_curinterp);
1189	/*	1404	/*
1190	* 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
1191	* 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.
1192	*/	1408	*/
1193		1409
1194	/*	1410	/*
1195	* 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
1196	* 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)
…		…
1283	cctx_destroy (coro_cctx *cctx)	1499	cctx_destroy (coro_cctx *cctx)
1284	{	1500	{
1285	if (!cctx)	1501	if (!cctx)
1286	return;	1502	return;
1287		1503
1288	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?	1504	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1289		1505
1290	--cctx_count;	1506	--cctx_count;
1291	coro_destroy (&cctx->cctx);	1507	coro_destroy (&cctx->cctx);
1292		1508
1293	/* coro_transfer creates new, empty cctx's */	1509	/* coro_transfer creates new, empty cctx's */
…		…
1357	/* TODO: throwing up here is considered harmful */	1573	/* TODO: throwing up here is considered harmful */
1358		1574
1359	if (expect_true (prev != next))	1575	if (expect_true (prev != next))
1360	{	1576	{
1361	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1577	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1362	croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");	1578	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1363		1579
1364	if (expect_false (next->flags & CF_RUNNING))
1365	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1366
1367	if (expect_false (next->flags & CF_DESTROYED))	1580	if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1368	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");	1581	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1369		1582
1370	#if !PERL_VERSION_ATLEAST (5,10,0)	1583	#if !PERL_VERSION_ATLEAST (5,10,0)
1371	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1584	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1372	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1585	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1373	#endif	1586	#endif
…		…
1406	if (expect_false (next->flags & CF_NEW))	1619	if (expect_false (next->flags & CF_NEW))
1407	{	1620	{
1408	/* need to start coroutine */	1621	/* need to start coroutine */
1409	next->flags &= ~CF_NEW;	1622	next->flags &= ~CF_NEW;
1410	/* setup coroutine call */	1623	/* setup coroutine call */
1411	coro_setup (aTHX_ next);	1624	init_perl (aTHX_ next);
1412	}	1625	}
1413	else	1626	else
1414	load_perl (aTHX_ next);	1627	load_perl (aTHX_ next);
1415		1628
1416	/* possibly untie and reuse the cctx */	1629	/* possibly untie and reuse the cctx */
…		…
1455	#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))
1456	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1669	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1457		1670
1458	/** high level stuff ********************************************************/	1671	/** high level stuff ********************************************************/
1459		1672
1460	static int	1673	static void
1461	coro_state_destroy (pTHX_ struct coro *coro)	1674	coro_state_destroy (pTHX_ struct coro *coro)
1462	{	1675	{
1463	if (coro->flags & CF_DESTROYED)	1676	if (coro->flags & CF_DESTROYED)
1464	return 0;	1677	return;
1465		1678
		1679	/* this callback is reserved for slf functions needing to do cleanup */
1466	if (coro->on_destroy)	1680	if (coro->on_destroy && !PL_dirty)
1467	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;
1468		1690
1469	coro->flags |= CF_DESTROYED;	1691	coro->flags |= CF_DESTROYED;
1470		1692
1471	if (coro->flags & CF_READY)	1693	if (coro->flags & CF_READY)
1472	{	1694	{
…		…
1479		1701
1480	if (coro->mainstack	1702	if (coro->mainstack
1481	&& coro->mainstack != main_mainstack	1703	&& coro->mainstack != main_mainstack
1482	&& coro->slot	1704	&& coro->slot
1483	&& !PL_dirty)	1705	&& !PL_dirty)
1484	{
1485	struct coro temp;
1486
1487	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1488
1489	save_perl (aTHX_ &temp);
1490	load_perl (aTHX_ coro);
1491
1492	coro_destruct_perl (aTHX_ coro);	1706	destroy_perl (aTHX_ coro);
1493		1707
1494	load_perl (aTHX_ &temp);	1708	if (coro->next) coro->next->prev = coro->prev;
1495		1709	if (coro->prev) coro->prev->next = coro->next;
1496	coro->slot = 0;	1710	if (coro == coro_first) coro_first = coro->next;
1497	}
1498		1711
1499	cctx_destroy (coro->cctx);	1712	cctx_destroy (coro->cctx);
1500	SvREFCNT_dec (coro->startcv);	1713	SvREFCNT_dec (coro->startcv);
1501	SvREFCNT_dec (coro->args);	1714	SvREFCNT_dec (coro->args);
		1715	SvREFCNT_dec (coro->swap_sv);
1502	SvREFCNT_dec (CORO_THROW);	1716	SvREFCNT_dec (CORO_THROW);
1503
1504	if (coro->next) coro->next->prev = coro->prev;
1505	if (coro->prev) coro->prev->next = coro->next;
1506	if (coro == coro_first) coro_first = coro->next;
1507
1508	return 1;
1509	}	1717	}
1510		1718
1511	static int	1719	static int
1512	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1720	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1513	{	1721	{
…		…
1561		1769
1562	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1770	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1563	TRANSFER (ta, 1);	1771	TRANSFER (ta, 1);
1564	}	1772	}
1565		1773
1566	/*****************************************************************************/
1567	/* gensub: simple closure generation utility */
1568
1569	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1570
1571	/* create a closure from XS, returns a code reference */
1572	/* the arg can be accessed via GENSUB_ARG from the callback */
1573	/* the callback must use dXSARGS/XSRETURN */
1574	static SV *
1575	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1576	{
1577	CV *cv = (CV *)newSV (0);
1578
1579	sv_upgrade ((SV *)cv, SVt_PVCV);
1580
1581	CvANON_on (cv);
1582	CvISXSUB_on (cv);
1583	CvXSUB (cv) = xsub;
1584	GENSUB_ARG = arg;
1585
1586	return newRV_noinc ((SV *)cv);
1587	}
1588
1589	/** Coro ********************************************************************/	1774	/** Coro ********************************************************************/
1590		1775
1591	INLINE void	1776	INLINE void
1592	coro_enq (pTHX_ struct coro *coro)	1777	coro_enq (pTHX_ struct coro *coro)
1593	{	1778	{
1594	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));	1779	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1595	}
1596		1780
1597	INLINE SV *	1781	SvREFCNT_inc_NN (coro->hv);
		1782
		1783	coro->next_ready = 0;
		1784	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
		1785	ready [1] = coro;
		1786	}
		1787
		1788	INLINE struct coro *
1598	coro_deq (pTHX)	1789	coro_deq (pTHX)
1599	{	1790	{
1600	int prio;	1791	int prio;
1601		1792
1602	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1793	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1603	if (AvFILLp (coro_ready [prio]) >= 0)	1794	{
1604	return av_shift (coro_ready [prio]);	1795	struct coro **ready = coro_ready [prio];
		1796
		1797	if (ready [0])
		1798	{
		1799	struct coro *coro = ready [0];
		1800	ready [0] = coro->next_ready;
		1801	return coro;
		1802	}
		1803	}
1605		1804
1606	return 0;	1805	return 0;
		1806	}
		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;
1607	}	1823	}
1608		1824
1609	static int	1825	static int
1610	api_ready (pTHX_ SV *coro_sv)	1826	api_ready (pTHX_ SV *coro_sv)
1611	{	1827	{
1612	struct coro *coro;
1613	SV *sv_hook;
1614	void (*xs_hook)(void);
1615
1616	coro = SvSTATE (coro_sv);	1828	struct coro *coro = SvSTATE (coro_sv);
1617		1829
1618	if (coro->flags & CF_READY)	1830	if (coro->flags & CF_READY)
1619	return 0;	1831	return 0;
1620		1832
1621	coro->flags |= CF_READY;	1833	coro->flags |= CF_READY;
1622		1834
1623	sv_hook = coro_nready ? 0 : coro_readyhook;
1624	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1625
1626	coro_enq (aTHX_ coro);	1835	coro_enq (aTHX_ coro);
1627	++coro_nready;
1628		1836
1629	if (sv_hook)	1837	if (!coro_nready++)
1630	{	1838	if (coroapi.readyhook)
1631	dSP;	1839	coroapi.readyhook ();
1632
1633	ENTER;
1634	SAVETMPS;
1635
1636	PUSHMARK (SP);
1637	PUTBACK;
1638	call_sv (sv_hook, G_VOID | G_DISCARD);
1639
1640	FREETMPS;
1641	LEAVE;
1642	}
1643
1644	if (xs_hook)
1645	xs_hook ();
1646		1840
1647	return 1;	1841	return 1;
1648	}	1842	}
1649		1843
1650	static int	1844	static int
…		…
1673	static void	1867	static void
1674	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1868	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1675	{	1869	{
1676	for (;;)	1870	for (;;)
1677	{	1871	{
1678	SV *next_sv = coro_deq (aTHX);	1872	struct coro *next = coro_deq (aTHX);
1679		1873
1680	if (expect_true (next_sv))	1874	if (expect_true (next))
1681	{	1875	{
1682	struct coro *next = SvSTATE_hv (next_sv);
1683
1684	/* cannot transfer to destroyed coros, skip and look for next */	1876	/* cannot transfer to destroyed coros, skip and look for next */
1685	if (expect_false (next->flags & CF_DESTROYED))	1877	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1686	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */	1878	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1687	else	1879	else
1688	{	1880	{
1689	next->flags &= ~CF_READY;	1881	next->flags &= ~CF_READY;
1690	--coro_nready;	1882	--coro_nready;
1691		1883
…		…
1697	{	1889	{
1698	/* nothing to schedule: call the idle handler */	1890	/* nothing to schedule: call the idle handler */
1699	if (SvROK (sv_idle)	1891	if (SvROK (sv_idle)
1700	&& SvOBJECT (SvRV (sv_idle)))	1892	&& SvOBJECT (SvRV (sv_idle)))
1701	{	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
1702	++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 */
1703	api_ready (aTHX_ SvRV (sv_idle));	1898	api_ready (aTHX_ SvRV (sv_idle));
1704	--coro_nready;	1899	--coro_nready;
1705	}	1900	}
1706	else	1901	else
1707	{	1902	{
		1903	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1708	dSP;	1904	dSP;
1709		1905
1710	ENTER;	1906	ENTER;
1711	SAVETMPS;	1907	SAVETMPS;
1712		1908
…		…
1822		2018
1823	static void	2019	static void
1824	coro_call_on_destroy (pTHX_ struct coro *coro)	2020	coro_call_on_destroy (pTHX_ struct coro *coro)
1825	{	2021	{
1826	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);
1827	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1828		2023
1829	if (on_destroyp)	2024	if (on_destroyp)
1830	{	2025	{
1831	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;
1832		2029
1833	while (AvFILLp (on_destroy) >= 0)	2030	while (AvFILLp (on_destroy) >= 0)
1834	{	2031	{
1835	dSP; /* don't disturb outer sp */	2032	dSP; /* don't disturb outer sp */
1836	SV *cb = av_pop (on_destroy);	2033	SV *cb = av_pop (on_destroy);
…		…
1838	PUSHMARK (SP);	2035	PUSHMARK (SP);
1839		2036
1840	if (statusp)	2037	if (statusp)
1841	{	2038	{
1842	int i;	2039	int i;
1843	AV *status = (AV *)SvRV (*statusp);
1844	EXTEND (SP, AvFILLp (status) + 1);	2040	EXTEND (SP, AvFILLp (status) + 1);
1845		2041
1846	for (i = 0; i <= AvFILLp (status); ++i)	2042	for (i = 0; i <= AvFILLp (status); ++i)
1847	PUSHs (AvARRAY (status)[i]);	2043	PUSHs (AvARRAY (status)[i]);
1848	}	2044	}
…		…
1852	}	2048	}
1853	}	2049	}
1854	}	2050	}
1855		2051
1856	static void	2052	static void
1857	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2053	coro_set_status (HV *coro_hv, SV **arg, int items)
1858	{	2054	{
1859	int i;
1860	HV *hv = (HV *)SvRV (coro_current);
1861	AV *av = newAV ();	2055	AV *av = newAV ();
1862		2056
		2057	/* items are actually not so common, so optimise for this case */
		2058	if (items)
		2059	{
		2060	int i;
		2061
1863	av_extend (av, items - 1);	2062	av_extend (av, items - 1);
		2063
1864	for (i = 0; i < items; ++i)	2064	for (i = 0; i < items; ++i)
1865	av_push (av, SvREFCNT_inc_NN (arg [i]));	2065	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2066	}
1866		2067
1867	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	}
1868		2070
		2071	static void
		2072	slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
		2073	{
1869	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 */
1870	api_ready (aTHX_ sv_manager);	2075	api_ready (aTHX_ sv_manager);
1871		2076
1872	frame->prepare = prepare_schedule;	2077	frame->prepare = prepare_schedule;
1873	frame->check = slf_check_repeat;	2078	frame->check = slf_check_repeat;
1874		2079
1875	/* as a minor optimisation, we could unwind all stacks here */	2080	/* as a minor optimisation, we could unwind all stacks here */
1876	/* 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 */
1877	/*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	}
1878	}	2150	}
1879		2151
1880	/*****************************************************************************/	2152	/*****************************************************************************/
1881	/* async pool handler */	2153	/* async pool handler */
1882		2154
…		…
1960		2232
1961	static void	2233	static void
1962	coro_rouse_callback (pTHX_ CV *cv)	2234	coro_rouse_callback (pTHX_ CV *cv)
1963	{	2235	{
1964	dXSARGS;	2236	dXSARGS;
1965	SV *data = (SV *)GENSUB_ARG;	2237	SV *data = (SV *)S_GENSUB_ARG;
1966		2238
1967	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2239	if (SvTYPE (SvRV (data)) != SVt_PVAV)
1968	{	2240	{
1969	/* first call, set args */	2241	/* first call, set args */
		2242	SV *coro = SvRV (data);
1970	AV *av = newAV ();	2243	AV *av = newAV ();
1971	SV *coro = SvRV (data);
1972		2244
1973	SvRV_set (data, (SV *)av);	2245	SvRV_set (data, (SV *)av);
1974	api_ready (aTHX_ coro);
1975	SvREFCNT_dec (coro);
1976		2246
1977	/* better take a full copy of the arguments */	2247	/* better take a full copy of the arguments */
1978	while (items--)	2248	while (items--)
1979	av_store (av, items, newSVsv (ST (items)));	2249	av_store (av, items, newSVsv (ST (items)));
		2250
		2251	api_ready (aTHX_ coro);
		2252	SvREFCNT_dec (coro);
1980	}	2253	}
1981		2254
1982	XSRETURN_EMPTY;	2255	XSRETURN_EMPTY;
1983	}	2256	}
1984		2257
…		…
2001		2274
2002	EXTEND (SP, AvFILLp (av) + 1);	2275	EXTEND (SP, AvFILLp (av) + 1);
2003	for (i = 0; i <= AvFILLp (av); ++i)	2276	for (i = 0; i <= AvFILLp (av); ++i)
2004	PUSHs (sv_2mortal (AvARRAY (av)[i]));	2277	PUSHs (sv_2mortal (AvARRAY (av)[i]));
2005		2278
2006	/* we have stolen the elements, so ste length to zero and free */	2279	/* we have stolen the elements, so set length to zero and free */
2007	AvFILLp (av) = -1;	2280	AvFILLp (av) = -1;
2008	av_undef (av);	2281	av_undef (av);
2009		2282
2010	PUTBACK;	2283	PUTBACK;
2011	}	2284	}
…		…
2035	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2308	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2036	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2309	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2037	croak ("Coro::rouse_wait called with illegal callback argument,");	2310	croak ("Coro::rouse_wait called with illegal callback argument,");
2038		2311
2039	{	2312	{
2040	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2313	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2041	SV *data = (SV *)GENSUB_ARG;	2314	SV *data = (SV *)S_GENSUB_ARG;
2042		2315
2043	frame->data = (void *)data;	2316	frame->data = (void *)data;
2044	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2317	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2045	frame->check = slf_check_rouse_wait;	2318	frame->check = slf_check_rouse_wait;
2046	}	2319	}
…		…
2050	coro_new_rouse_cb (pTHX)	2323	coro_new_rouse_cb (pTHX)
2051	{	2324	{
2052	HV *hv = (HV *)SvRV (coro_current);	2325	HV *hv = (HV *)SvRV (coro_current);
2053	struct coro *coro = SvSTATE_hv (hv);	2326	struct coro *coro = SvSTATE_hv (hv);
2054	SV *data = newRV_inc ((SV *)hv);	2327	SV *data = newRV_inc ((SV *)hv);
2055	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2328	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2056		2329
2057	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);
2058	SvREFCNT_dec (data); /* magicext increases the refcount */	2331	SvREFCNT_dec (data); /* magicext increases the refcount */
2059		2332
2060	SvREFCNT_dec (coro->rouse_cb);	2333	SvREFCNT_dec (coro->rouse_cb);
…		…
2285	if (PL_op->op_flags & OPf_STACKED)	2558	if (PL_op->op_flags & OPf_STACKED)
2286	{	2559	{
2287	if (items > slf_arga)	2560	if (items > slf_arga)
2288	{	2561	{
2289	slf_arga = items;	2562	slf_arga = items;
2290	free (slf_argv);	2563	Safefree (slf_argv);
2291	slf_argv = malloc (slf_arga * sizeof (SV *));	2564	New (0, slf_argv, slf_arga, SV *);
2292	}	2565	}
2293		2566
2294	slf_argc = items;	2567	slf_argc = items;
2295		2568
2296	for (i = 0; i < items; ++i)	2569	for (i = 0; i < items; ++i)
…		…
2301		2574
2302	PL_op->op_ppaddr = pp_slf;	2575	PL_op->op_ppaddr = pp_slf;
2303	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */	2576	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2304		2577
2305	PL_op = (OP *)&slf_restore;	2578	PL_op = (OP *)&slf_restore;
		2579	}
		2580
		2581	/*****************************************************************************/
		2582	/* dynamic wind */
		2583
		2584	static void
		2585	on_enterleave_call (pTHX_ SV *cb)
		2586	{
		2587	dSP;
		2588
		2589	PUSHSTACK;
		2590
		2591	PUSHMARK (SP);
		2592	PUTBACK;
		2593	call_sv (cb, G_VOID | G_DISCARD);
		2594	SPAGAIN;
		2595
		2596	POPSTACK;
		2597	}
		2598
		2599	static SV *
		2600	coro_avp_pop_and_free (pTHX_ AV **avp)
		2601	{
		2602	AV *av = *avp;
		2603	SV *res = av_pop (av);
		2604
		2605	if (AvFILLp (av) < 0)
		2606	{
		2607	*avp = 0;
		2608	SvREFCNT_dec (av);
		2609	}
		2610
		2611	return res;
		2612	}
		2613
		2614	static void
		2615	coro_pop_on_enter (pTHX_ void *coro)
		2616	{
		2617	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
		2618	SvREFCNT_dec (cb);
		2619	}
		2620
		2621	static void
		2622	coro_pop_on_leave (pTHX_ void *coro)
		2623	{
		2624	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
		2625	on_enterleave_call (aTHX_ sv_2mortal (cb));
2306	}	2626	}
2307		2627
2308	/*****************************************************************************/	2628	/*****************************************************************************/
2309	/* PerlIO::cede */	2629	/* PerlIO::cede */
2310		2630
…		…
2384	/* Coro::Semaphore & Coro::Signal */	2704	/* Coro::Semaphore & Coro::Signal */
2385		2705
2386	static SV *	2706	static SV *
2387	coro_waitarray_new (pTHX_ int count)	2707	coro_waitarray_new (pTHX_ int count)
2388	{	2708	{
2389	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2709	/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2390	AV *av = newAV ();	2710	AV *av = newAV ();
2391	SV **ary;	2711	SV **ary;
2392		2712
2393	/* unfortunately, building manually saves memory */	2713	/* unfortunately, building manually saves memory */
2394	Newx (ary, 2, SV *);	2714	Newx (ary, 2, SV *);
…		…
2536	{	2856	{
2537	if (items >= 2)	2857	if (items >= 2)
2538	{	2858	{
2539	/* callback form */	2859	/* callback form */
2540	AV *av = (AV *)SvRV (arg [0]);	2860	AV *av = (AV *)SvRV (arg [0]);
2541	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2861	SV *cb_cv = s_get_cv_croak (arg [1]);
2542		2862
2543	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));	2863	av_push (av, SvREFCNT_inc_NN (cb_cv));
2544		2864
2545	if (SvIVX (AvARRAY (av)[0]) > 0)	2865	if (SvIVX (AvARRAY (av)[0]) > 0)
2546	coro_semaphore_adjust (aTHX_ av, 0);	2866	coro_semaphore_adjust (aTHX_ av, 0);
2547		2867
2548	frame->prepare = prepare_nop;	2868	frame->prepare = prepare_nop;
…		…
2572	AvARRAY (av)[0] = AvARRAY (av)[1];	2892	AvARRAY (av)[0] = AvARRAY (av)[1];
2573	AvARRAY (av)[1] = cb;	2893	AvARRAY (av)[1] = cb;
2574		2894
2575	cb = av_shift (av);	2895	cb = av_shift (av);
2576		2896
		2897	if (SvTYPE (cb) == SVt_PVCV)
		2898	{
		2899	dSP;
		2900	PUSHMARK (SP);
		2901	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2902	PUTBACK;
		2903	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2904	}
		2905	else
		2906	{
2577	api_ready (aTHX_ cb);	2907	api_ready (aTHX_ cb);
2578	sv_setiv (cb, 0); /* signal waiter */	2908	sv_setiv (cb, 0); /* signal waiter */
		2909	}
		2910
2579	SvREFCNT_dec (cb);	2911	SvREFCNT_dec (cb);
2580		2912
2581	--count;	2913	--count;
2582	}	2914	}
2583	}	2915	}
…		…
2592	static void	2924	static void
2593	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2925	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2594	{	2926	{
2595	AV *av = (AV *)SvRV (arg [0]);	2927	AV *av = (AV *)SvRV (arg [0]);
2596		2928
		2929	if (items >= 2)
		2930	{
		2931	SV *cb_cv = s_get_cv_croak (arg [1]);
		2932	av_push (av, SvREFCNT_inc_NN (cb_cv));
		2933
2597	if (SvIVX (AvARRAY (av)[0]))	2934	if (SvIVX (AvARRAY (av)[0]))
		2935	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
		2936
		2937	frame->prepare = prepare_nop;
		2938	frame->check = slf_check_nop;
		2939	}
		2940	else if (SvIVX (AvARRAY (av)[0]))
2598	{	2941	{
2599	SvIVX (AvARRAY (av)[0]) = 0;	2942	SvIVX (AvARRAY (av)[0]) = 0;
2600	frame->prepare = prepare_nop;	2943	frame->prepare = prepare_nop;
2601	frame->check = slf_check_nop;	2944	frame->check = slf_check_nop;
2602	}	2945	}
2603	else	2946	else
2604	{	2947	{
2605	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */	2948	SV *waiter = newSVsv (coro_current); /* owned by signal av */
2606		2949
2607	av_push (av, waiter);	2950	av_push (av, waiter);
2608		2951
2609	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */	2952	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2610	frame->prepare = prepare_schedule;	2953	frame->prepare = prepare_schedule;
…		…
2628		2971
2629	static void	2972	static void
2630	coro_aio_callback (pTHX_ CV *cv)	2973	coro_aio_callback (pTHX_ CV *cv)
2631	{	2974	{
2632	dXSARGS;	2975	dXSARGS;
2633	AV *state = (AV *)GENSUB_ARG;	2976	AV *state = (AV *)S_GENSUB_ARG;
2634	SV *coro = av_pop (state);	2977	SV *coro = av_pop (state);
2635	SV *data_sv = newSV (sizeof (struct io_state));	2978	SV *data_sv = newSV (sizeof (struct io_state));
2636		2979
2637	av_extend (state, items - 1);	2980	av_extend (state, items - 1);
2638		2981
…		…
2752		3095
2753	for (i = 0; i < items; ++i)	3096	for (i = 0; i < items; ++i)
2754	PUSHs (arg [i]);	3097	PUSHs (arg [i]);
2755		3098
2756	/* now push the callback closure */	3099	/* now push the callback closure */
2757	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))));
2758		3101
2759	/* now call the AIO function - we assume our request is uncancelable */	3102	/* now call the AIO function - we assume our request is uncancelable */
2760	PUTBACK;	3103	PUTBACK;
2761	call_sv ((SV *)req, G_VOID | G_DISCARD);	3104	call_sv ((SV *)req, G_VOID | G_DISCARD);
2762	}	3105	}
2763		3106
2764	/* 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 */
2765	frame->data = (void *)state;	3108	frame->data = (void *)state;
2766	frame->prepare = prepare_schedule;	3109	frame->prepare = prepare_schedule;
2767	frame->check = slf_check_aio_req;	3110	frame->check = slf_check_aio_req;
2768	}	3111	}
2769		3112
…		…
2780	/*****************************************************************************/	3123	/*****************************************************************************/
2781		3124
2782	#if CORO_CLONE	3125	#if CORO_CLONE
2783	# include "clone.c"	3126	# include "clone.c"
2784	#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	}
2785		3186
2786	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3187	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2787		3188
2788	PROTOTYPES: DISABLE	3189	PROTOTYPES: DISABLE
2789		3190
…		…
2842	coroapi.prepare_nop = prepare_nop;	3243	coroapi.prepare_nop = prepare_nop;
2843	coroapi.prepare_schedule = prepare_schedule;	3244	coroapi.prepare_schedule = prepare_schedule;
2844	coroapi.prepare_cede = prepare_cede;	3245	coroapi.prepare_cede = prepare_cede;
2845	coroapi.prepare_cede_notself = prepare_cede_notself;	3246	coroapi.prepare_cede_notself = prepare_cede_notself;
2846		3247
2847	{	3248	time_init (aTHX);
2848	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2849		3249
2850	if (!svp) croak ("Time::HiRes is required");
2851	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2852
2853	nvtime = INT2PTR (double (*)(), SvIV (*svp));
2854	}
2855
2856	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	3250	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2857	}	3251	}
2858		3252
2859	SV *	3253	SV *
2860	new (char *klass, ...)	3254	new (SV *klass, ...)
2861	ALIAS:	3255	ALIAS:
2862	Coro::new = 1	3256	Coro::new = 1
2863	CODE:	3257	CODE:
2864	{	3258	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2865	struct coro *coro;	3259	OUTPUT:
2866	MAGIC *mg;
2867	HV *hv;
2868	CV *cb;
2869	int i;
2870
2871	if (items > 1)
2872	{
2873	cb = coro_sv_2cv (aTHX_ ST (1));
2874
2875	if (!ix)
2876	{
2877	if (CvISXSUB (cb))
2878	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2879
2880	if (!CvROOT (cb))
2881	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2882	}
2883	}
2884
2885	Newz (0, coro, 1, struct coro);
2886	coro->args = newAV ();
2887	coro->flags = CF_NEW;
2888
2889	if (coro_first) coro_first->prev = coro;
2890	coro->next = coro_first;
2891	coro_first = coro;
2892
2893	coro->hv = hv = newHV ();
2894	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2895	mg->mg_flags |= MGf_DUP;
2896	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2897
2898	if (items > 1)
2899	{
2900	av_extend (coro->args, items - 1 + ix - 1);
2901
2902	if (ix)
2903	{
2904	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2905	cb = cv_coro_run;
2906	}
2907
2908	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2909
2910	for (i = 2; i < items; i++)
2911	av_push (coro->args, newSVsv (ST (i)));
2912	}
2913	}
2914	OUTPUT:
2915	RETVAL	3260	RETVAL
2916		3261
2917	void	3262	void
2918	transfer (...)	3263	transfer (...)
2919	PROTOTYPE: $$	3264	PROTOTYPE: $$
2920	CODE:	3265	CODE:
2921	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3266	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2922
2923	bool
2924	_destroy (SV *coro_sv)
2925	CODE:
2926	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2927	OUTPUT:
2928	RETVAL
2929		3267
2930	void	3268	void
2931	_exit (int code)	3269	_exit (int code)
2932	PROTOTYPE: $	3270	PROTOTYPE: $
2933	CODE:	3271	CODE:
…		…
3008	eval = 1	3346	eval = 1
3009	CODE:	3347	CODE:
3010	{	3348	{
3011	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3349	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3012	{	3350	{
3013	struct coro temp;	3351	struct coro *current = SvSTATE_current;
		3352	struct CoroSLF slf_save;
3014		3353
3015	if (!(coro->flags & CF_RUNNING))	3354	if (current != coro)
3016	{	3355	{
3017	PUTBACK;	3356	PUTBACK;
3018	save_perl (aTHX_ &temp);	3357	save_perl (aTHX_ current);
3019	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;
		3368	SPAGAIN;
3020	}	3369	}
3021		3370
3022	{
3023	dSP;
3024	ENTER;
3025	SAVETMPS;
3026	PUTBACK;
3027	PUSHSTACK;	3371	PUSHSTACK;
		3372
3028	PUSHMARK (SP);	3373	PUSHMARK (SP);
		3374	PUTBACK;
3029		3375
3030	if (ix)	3376	if (ix)
3031	eval_sv (coderef, 0);	3377	eval_sv (coderef, 0);
3032	else	3378	else
3033	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	3379	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3034		3380
3035	POPSTACK;	3381	POPSTACK;
3036	SPAGAIN;	3382	SPAGAIN;
3037	FREETMPS;
3038	LEAVE;
3039	PUTBACK;
3040	}
3041		3383
3042	if (!(coro->flags & CF_RUNNING))	3384	if (current != coro)
3043	{	3385	{
		3386	PUTBACK;
		3387	slf_frame = slf_save;
3044	save_perl (aTHX_ coro);	3388	save_perl (aTHX_ coro);
3045	load_perl (aTHX_ &temp);	3389	load_perl (aTHX_ current);
3046	SPAGAIN;	3390	SPAGAIN;
3047	}	3391	}
3048	}	3392	}
3049	}	3393	}
3050		3394
…		…
3054	ALIAS:	3398	ALIAS:
3055	is_ready = CF_READY	3399	is_ready = CF_READY
3056	is_running = CF_RUNNING	3400	is_running = CF_RUNNING
3057	is_new = CF_NEW	3401	is_new = CF_NEW
3058	is_destroyed = CF_DESTROYED	3402	is_destroyed = CF_DESTROYED
		3403	is_suspended = CF_SUSPENDED
3059	CODE:	3404	CODE:
3060	RETVAL = boolSV (coro->flags & ix);	3405	RETVAL = boolSV (coro->flags & ix);
3061	OUTPUT:	3406	OUTPUT:
3062	RETVAL	3407	RETVAL
3063		3408
3064	void	3409	void
3065	throw (Coro::State self, SV *throw = &PL_sv_undef)	3410	throw (Coro::State self, SV *exception = &PL_sv_undef)
3066	PROTOTYPE: $;$	3411	PROTOTYPE: $;$
3067	CODE:	3412	CODE:
3068	{	3413	{
3069	struct coro *current = SvSTATE_current;	3414	struct coro *current = SvSTATE_current;
3070	SV **throwp = self == current ? &CORO_THROW : &self->except;	3415	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3071	SvREFCNT_dec (*throwp);	3416	SvREFCNT_dec (*exceptionp);
3072	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3417	SvGETMAGIC (exception);
		3418	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3073	}	3419	}
3074		3420
3075	void	3421	void
3076	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3422	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3077	PROTOTYPE: $;$	3423	PROTOTYPE: $;$
…		…
3128	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	3474	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3129		3475
3130	SV *tmp = *src; *src = *dst; *dst = tmp;	3476	SV *tmp = *src; *src = *dst; *dst = tmp;
3131	}	3477	}
3132		3478
		3479	void
		3480	cancel (Coro::State self)
		3481	CODE:
		3482	coro_state_destroy (aTHX_ self);
		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	}
		3539
3133		3540
3134	MODULE = Coro::State PACKAGE = Coro	3541	MODULE = Coro::State PACKAGE = Coro
3135		3542
3136	BOOT:	3543	BOOT:
3137	{	3544	{
3138	int i;
3139
3140	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3545	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3141	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3546	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3142	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);	3547	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3143	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);	3548	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3144	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3549	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
…		…
3148	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3553	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3149		3554
3150	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);
3151	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3556	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3152	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);
3153	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 */
3154		3559
3155	coro_stash = gv_stashpv ("Coro", TRUE);	3560	coro_stash = gv_stashpv ("Coro", TRUE);
3156		3561
3157	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3562	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3158	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3563	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3159	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	3564	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3160	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	3565	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3161	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	3566	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3162	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	3567	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3163
3164	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3165	coro_ready[i] = newAV ();
3166		3568
3167	{	3569	{
3168	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3570	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3169		3571
3170	coroapi.schedule = api_schedule;	3572	coroapi.schedule = api_schedule;
…		…
3180	sv_setiv (sv, (IV)&coroapi);	3582	sv_setiv (sv, (IV)&coroapi);
3181	SvREADONLY_on (sv);	3583	SvREADONLY_on (sv);
3182	}	3584	}
3183	}	3585	}
3184		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
3185	void	3603	void
3186	terminate (...)	3604	terminate (...)
3187	CODE:	3605	CODE:
3188	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3606	CORO_EXECUTE_SLF_XS (slf_init_terminate);
3189		3607
3190	void	3608	void
		3609	cancel (...)
		3610	CODE:
		3611	CORO_EXECUTE_SLF_XS (slf_init_cancel);
		3612
		3613	void
3191	schedule (...)	3614	schedule (...)
3192	CODE:	3615	CODE:
3193	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3616	CORO_EXECUTE_SLF_XS (slf_init_schedule);
3194		3617
3195	void	3618	void
…		…
3209		3632
3210	void	3633	void
3211	cede_notself (...)	3634	cede_notself (...)
3212	CODE:	3635	CODE:
3213	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);	3636	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3214
3215	void
3216	_cancel (Coro::State self)
3217	CODE:
3218	coro_state_destroy (aTHX_ self);
3219	coro_call_on_destroy (aTHX_ self);
3220		3637
3221	void	3638	void
3222	_set_current (SV *current)	3639	_set_current (SV *current)
3223	PROTOTYPE: $	3640	PROTOTYPE: $
3224	CODE:	3641	CODE:
…		…
3228	void	3645	void
3229	_set_readyhook (SV *hook)	3646	_set_readyhook (SV *hook)
3230	PROTOTYPE: $	3647	PROTOTYPE: $
3231	CODE:	3648	CODE:
3232	SvREFCNT_dec (coro_readyhook);	3649	SvREFCNT_dec (coro_readyhook);
		3650	SvGETMAGIC (hook);
		3651	if (SvOK (hook))
		3652	{
3233	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	}
3234		3661
3235	int	3662	int
3236	prio (Coro::State coro, int newprio = 0)	3663	prio (Coro::State coro, int newprio = 0)
3237	PROTOTYPE: $;$	3664	PROTOTYPE: $;$
3238	ALIAS:	3665	ALIAS:
…		…
3244	if (items > 1)	3671	if (items > 1)
3245	{	3672	{
3246	if (ix)	3673	if (ix)
3247	newprio = coro->prio - newprio;	3674	newprio = coro->prio - newprio;
3248		3675
3249	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3676	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3250	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3677	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3251		3678
3252	coro->prio = newprio;	3679	coro->prio = newprio;
3253	}	3680	}
3254	}	3681	}
3255	OUTPUT:	3682	OUTPUT:
…		…
3270	RETVAL = coro_nready;	3697	RETVAL = coro_nready;
3271	OUTPUT:	3698	OUTPUT:
3272	RETVAL	3699	RETVAL
3273		3700
3274	void	3701	void
		3702	suspend (Coro::State self)
		3703	PROTOTYPE: $
		3704	CODE:
		3705	self->flags |= CF_SUSPENDED;
		3706
		3707	void
		3708	resume (Coro::State self)
		3709	PROTOTYPE: $
		3710	CODE:
		3711	self->flags &= ~CF_SUSPENDED;
		3712
		3713	void
3275	_pool_handler (...)	3714	_pool_handler (...)
3276	CODE:	3715	CODE:
3277	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);	3716	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3278		3717
3279	void	3718	void
…		…
3290	for (i = 1; i < items; ++i)	3729	for (i = 1; i < items; ++i)
3291	av_push (av, SvREFCNT_inc_NN (ST (i)));	3730	av_push (av, SvREFCNT_inc_NN (ST (i)));
3292		3731
3293	if ((SV *)hv == &PL_sv_undef)	3732	if ((SV *)hv == &PL_sv_undef)
3294	{	3733	{
3295	PUSHMARK (SP);	3734	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3296	EXTEND (SP, 2);
3297	PUSHs (sv_Coro);
3298	PUSHs ((SV *)cv_pool_handler);
3299	PUTBACK;
3300	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3301	SPAGAIN;
3302
3303	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3735	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3736	SvREFCNT_dec (sv);
3304	}	3737	}
3305		3738
3306	{	3739	{
3307	struct coro *coro = SvSTATE_hv (hv);	3740	struct coro *coro = SvSTATE_hv (hv);
3308		3741
…		…
3332	rouse_wait (...)	3765	rouse_wait (...)
3333	PROTOTYPE: ;$	3766	PROTOTYPE: ;$
3334	PPCODE:	3767	PPCODE:
3335	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);	3768	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3336		3769
		3770	void
		3771	on_enter (SV *block)
		3772	ALIAS:
		3773	on_leave = 1
		3774	PROTOTYPE: &
		3775	CODE:
		3776	{
		3777	struct coro *coro = SvSTATE_current;
		3778	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
		3779
		3780	block = s_get_cv_croak (block);
		3781
		3782	if (!*avp)
		3783	*avp = newAV ();
		3784
		3785	av_push (*avp, SvREFCNT_inc (block));
		3786
		3787	if (!ix)
		3788	on_enterleave_call (aTHX_ block);
		3789
		3790	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3791	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
		3792	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3793	}
		3794
3337		3795
3338	MODULE = Coro::State PACKAGE = PerlIO::cede	3796	MODULE = Coro::State PACKAGE = PerlIO::cede
3339		3797
3340	BOOT:	3798	BOOT:
3341	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3799	PerlIO_define_layer (aTHX_ &PerlIO_cede);
…		…
3344	MODULE = Coro::State PACKAGE = Coro::Semaphore	3802	MODULE = Coro::State PACKAGE = Coro::Semaphore
3345		3803
3346	SV *	3804	SV *
3347	new (SV *klass, SV *count = 0)	3805	new (SV *klass, SV *count = 0)
3348	CODE:	3806	CODE:
		3807	{
		3808	int semcnt = 1;
		3809
		3810	if (count)
		3811	{
		3812	SvGETMAGIC (count);
		3813
		3814	if (SvOK (count))
		3815	semcnt = SvIV (count);
		3816	}
		3817
3349	RETVAL = sv_bless (	3818	RETVAL = sv_bless (
3350	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),	3819	coro_waitarray_new (aTHX_ semcnt),
3351	GvSTASH (CvGV (cv))	3820	GvSTASH (CvGV (cv))
3352	);	3821	);
		3822	}
3353	OUTPUT:	3823	OUTPUT:
3354	RETVAL	3824	RETVAL
3355		3825
3356	# helper for Coro::Channel	3826	# helper for Coro::Channel and others
3357	SV *	3827	SV *
3358	_alloc (int count)	3828	_alloc (int count)
3359	CODE:	3829	CODE:
3360	RETVAL = coro_waitarray_new (aTHX_ count);	3830	RETVAL = coro_waitarray_new (aTHX_ count);
3361	OUTPUT:	3831	OUTPUT:
…		…
3419	for (i = 1; i <= wcount; ++i)	3889	for (i = 1; i <= wcount; ++i)
3420	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));	3890	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3421	}	3891	}
3422	}	3892	}
3423		3893
		3894	MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
		3895
		3896	void
		3897	_may_delete (SV *sem, int count, int extra_refs)
		3898	PPCODE:
		3899	{
		3900	AV *av = (AV *)SvRV (sem);
		3901
		3902	if (SvREFCNT ((SV *)av) == 1 + extra_refs
		3903	&& AvFILLp (av) == 0 /* no waiters, just count */
		3904	&& SvIV (AvARRAY (av)[0]) == count)
		3905	XSRETURN_YES;
		3906
		3907	XSRETURN_NO;
		3908	}
		3909
3424	MODULE = Coro::State PACKAGE = Coro::Signal	3910	MODULE = Coro::State PACKAGE = Coro::Signal
3425		3911
3426	SV *	3912	SV *
3427	new (SV *klass)	3913	new (SV *klass)
3428	CODE:	3914	CODE:
…		…
3499		3985
3500	void	3986	void
3501	_register (char *target, char *proto, SV *req)	3987	_register (char *target, char *proto, SV *req)
3502	CODE:	3988	CODE:
3503	{	3989	{
3504	CV *req_cv = coro_sv_2cv (aTHX_ req);	3990	SV *req_cv = s_get_cv_croak (req);
3505	/* newXSproto doesn't return the CV on 5.8 */	3991	/* newXSproto doesn't return the CV on 5.8 */
3506	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3992	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3507	sv_setpv ((SV *)slf_cv, proto);	3993	sv_setpv ((SV *)slf_cv, proto);
3508	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);
3509	}	3995	}
3510		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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