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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.332 by root, Thu Nov 27 12:20:31 2008 UTC vs.
Revision 1.393 by root, Fri Apr 29 17:38:56 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;
940	}
941		1122
		1123	SWAP_SVS (coro);
		1124
		1125	if (expect_false (enable_times))
		1126	{
		1127	coro_times_update ();
		1128	coro_times_sub (coro);
		1129	}
		1130	}
		1131
942	static void	1132	static void
943	coro_destruct (pTHX_ struct coro *coro)	1133	coro_unwind_stacks (pTHX)
944	{	1134	{
945	if (!IN_DESTRUCT)	1135	if (!IN_DESTRUCT)
946	{	1136	{
947	/* restore all saved variables and stuff */	1137	/* restore all saved variables and stuff */
948	LEAVE_SCOPE (0);	1138	LEAVE_SCOPE (0);
…		…
956	POPSTACK_TO (PL_mainstack);	1146	POPSTACK_TO (PL_mainstack);
957		1147
958	/* unwind main stack */	1148	/* unwind main stack */
959	dounwind (-1);	1149	dounwind (-1);
960	}	1150	}
		1151	}
961		1152
962	SvREFCNT_dec (GvSV (PL_defgv));	1153	static void
963	SvREFCNT_dec (GvAV (PL_defgv));	1154	destroy_perl (pTHX_ struct coro *coro)
964	SvREFCNT_dec (GvSV (PL_errgv));	1155	{
965	SvREFCNT_dec (PL_defoutgv);	1156	SV *svf [9];
966	SvREFCNT_dec (PL_rs);
967	SvREFCNT_dec (GvSV (irsgv));
968	SvREFCNT_dec (GvHV (PL_hintgv));
969		1157
970	SvREFCNT_dec (PL_diehook);
971	SvREFCNT_dec (PL_warnhook);
972		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	load_perl (aTHX_ coro);
		1165
		1166	coro_unwind_stacks (aTHX);
		1167	coro_destruct_stacks (aTHX);
		1168
		1169	/* restore swapped sv's */
		1170	SWAP_SVS (coro);
		1171
		1172	// now save some sv's to be free'd later
		1173	svf [0] = GvSV (PL_defgv);
		1174	svf [1] = (SV *)GvAV (PL_defgv);
		1175	svf [2] = GvSV (PL_errgv);
		1176	svf [3] = (SV *)PL_defoutgv;
		1177	svf [4] = PL_rs;
		1178	svf [5] = GvSV (irsgv);
		1179	svf [6] = (SV *)GvHV (PL_hintgv);
		1180	svf [7] = PL_diehook;
		1181	svf [8] = PL_warnhook;
		1182	assert (9 == sizeof (svf) / sizeof (*svf));
		1183
		1184	load_perl (aTHX_ current);
		1185	}
		1186
		1187	{
		1188	unsigned int i;
		1189
		1190	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
		1191	SvREFCNT_dec (svf [i]);
		1192
973	SvREFCNT_dec (coro->saved_deffh);	1193	SvREFCNT_dec (coro->saved_deffh);
974	SvREFCNT_dec (coro->rouse_cb);	1194	SvREFCNT_dec (coro->rouse_cb);
975	SvREFCNT_dec (coro->invoke_cb);	1195	SvREFCNT_dec (coro->invoke_cb);
976	SvREFCNT_dec (coro->invoke_av);	1196	SvREFCNT_dec (coro->invoke_av);
977		1197	}
978	coro_destruct_stacks (aTHX);
979	}	1198	}
980		1199
981	INLINE void	1200	INLINE void
982	free_coro_mortal (pTHX)	1201	free_coro_mortal (pTHX)
983	{	1202	{
…		…
1180	/* somebody or something will hit me for both perl_run and PL_restartop */	1399	/* somebody or something will hit me for both perl_run and PL_restartop */
1181	PL_restartop = PL_op;	1400	PL_restartop = PL_op;
1182	perl_run (PL_curinterp);	1401	perl_run (PL_curinterp);
1183	/*	1402	/*
1184	* Unfortunately, there is no way to get at the return values of the	1403	* Unfortunately, there is no way to get at the return values of the
1185	* coro body here, as perl_run destroys these	1404	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1405	* runtime errors here, as this is just a random interpreter, not a thread.
1186	*/	1406	*/
1187		1407
1188	/*	1408	/*
1189	* If perl-run returns we assume exit() was being called or the coro	1409	* If perl-run returns we assume exit() was being called or the coro
1190	* fell off the end, which seems to be the only valid (non-bug)	1410	* fell off the end, which seems to be the only valid (non-bug)
…		…
1277	cctx_destroy (coro_cctx *cctx)	1497	cctx_destroy (coro_cctx *cctx)
1278	{	1498	{
1279	if (!cctx)	1499	if (!cctx)
1280	return;	1500	return;
1281		1501
1282	assert (cctx != cctx_current);//D temporary	1502	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1283		1503
1284	--cctx_count;	1504	--cctx_count;
1285	coro_destroy (&cctx->cctx);	1505	coro_destroy (&cctx->cctx);
1286		1506
1287	/* coro_transfer creates new, empty cctx's */	1507	/* coro_transfer creates new, empty cctx's */
…		…
1351	/* TODO: throwing up here is considered harmful */	1571	/* TODO: throwing up here is considered harmful */
1352		1572
1353	if (expect_true (prev != next))	1573	if (expect_true (prev != next))
1354	{	1574	{
1355	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1575	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1356	croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");	1576	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1357		1577
1358	if (expect_false (next->flags & CF_RUNNING))
1359	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1360
1361	if (expect_false (next->flags & CF_DESTROYED))	1578	if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1362	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");	1579	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1363		1580
1364	#if !PERL_VERSION_ATLEAST (5,10,0)	1581	#if !PERL_VERSION_ATLEAST (5,10,0)
1365	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1582	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1366	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1583	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1367	#endif	1584	#endif
…		…
1400	if (expect_false (next->flags & CF_NEW))	1617	if (expect_false (next->flags & CF_NEW))
1401	{	1618	{
1402	/* need to start coroutine */	1619	/* need to start coroutine */
1403	next->flags &= ~CF_NEW;	1620	next->flags &= ~CF_NEW;
1404	/* setup coroutine call */	1621	/* setup coroutine call */
1405	coro_setup (aTHX_ next);	1622	init_perl (aTHX_ next);
1406	}	1623	}
1407	else	1624	else
1408	load_perl (aTHX_ next);	1625	load_perl (aTHX_ next);
1409
1410	assert (!prev->cctx);//D temporary
1411		1626
1412	/* possibly untie and reuse the cctx */	1627	/* possibly untie and reuse the cctx */
1413	if (expect_true (	1628	if (expect_true (
1414	cctx_current->idle_sp == STACKLEVEL	1629	cctx_current->idle_sp == STACKLEVEL
1415	&& !(cctx_current->flags & CC_TRACE)	1630	&& !(cctx_current->flags & CC_TRACE)
…		…
1457	coro_state_destroy (pTHX_ struct coro *coro)	1672	coro_state_destroy (pTHX_ struct coro *coro)
1458	{	1673	{
1459	if (coro->flags & CF_DESTROYED)	1674	if (coro->flags & CF_DESTROYED)
1460	return 0;	1675	return 0;
1461		1676
1462	if (coro->on_destroy)	1677	if (coro->on_destroy && !PL_dirty)
1463	coro->on_destroy (aTHX_ coro);	1678	coro->on_destroy (aTHX_ coro);
		1679
		1680	/*
		1681	* The on_destroy above most likely is from an SLF call.
		1682	* Since by definition the SLF call will not finish when we destroy
		1683	* the coro, we will have to force-finish it here, otherwise
		1684	* cleanup functions cannot call SLF functions.
		1685	*/
		1686	coro->slf_frame.prepare = 0;
1464		1687
1465	coro->flags |= CF_DESTROYED;	1688	coro->flags |= CF_DESTROYED;
1466		1689
1467	if (coro->flags & CF_READY)	1690	if (coro->flags & CF_READY)
1468	{	1691	{
…		…
1471	--coro_nready;	1694	--coro_nready;
1472	}	1695	}
1473	else	1696	else
1474	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1697	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1475		1698
1476	if (coro->mainstack && coro->mainstack != main_mainstack)	1699	if (coro->mainstack
1477	{	1700	&& coro->mainstack != main_mainstack
1478	struct coro temp;	1701	&& coro->slot
1479		1702	&& !PL_dirty)
1480	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1481
1482	save_perl (aTHX_ &temp);
1483	load_perl (aTHX_ coro);	1703	destroy_perl (aTHX_ coro);
1484		1704
1485	coro_destruct (aTHX_ coro);	1705	if (coro->next) coro->next->prev = coro->prev;
1486		1706	if (coro->prev) coro->prev->next = coro->next;
1487	load_perl (aTHX_ &temp);	1707	if (coro == coro_first) coro_first = coro->next;
1488
1489	coro->slot = 0;
1490	}
1491		1708
1492	cctx_destroy (coro->cctx);	1709	cctx_destroy (coro->cctx);
1493	SvREFCNT_dec (coro->startcv);	1710	SvREFCNT_dec (coro->startcv);
1494	SvREFCNT_dec (coro->args);	1711	SvREFCNT_dec (coro->args);
		1712	SvREFCNT_dec (coro->swap_sv);
1495	SvREFCNT_dec (CORO_THROW);	1713	SvREFCNT_dec (CORO_THROW);
1496
1497	if (coro->next) coro->next->prev = coro->prev;
1498	if (coro->prev) coro->prev->next = coro->next;
1499	if (coro == coro_first) coro_first = coro->next;
1500		1714
1501	return 1;	1715	return 1;
1502	}	1716	}
1503		1717
1504	static int	1718	static int
…		…
1554		1768
1555	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1769	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1556	TRANSFER (ta, 1);	1770	TRANSFER (ta, 1);
1557	}	1771	}
1558		1772
1559	/*****************************************************************************/
1560	/* gensub: simple closure generation utility */
1561
1562	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1563
1564	/* create a closure from XS, returns a code reference */
1565	/* the arg can be accessed via GENSUB_ARG from the callback */
1566	/* the callback must use dXSARGS/XSRETURN */
1567	static SV *
1568	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1569	{
1570	CV *cv = (CV *)newSV (0);
1571
1572	sv_upgrade ((SV *)cv, SVt_PVCV);
1573
1574	CvANON_on (cv);
1575	CvISXSUB_on (cv);
1576	CvXSUB (cv) = xsub;
1577	GENSUB_ARG = arg;
1578
1579	return newRV_noinc ((SV *)cv);
1580	}
1581
1582	/** Coro ********************************************************************/	1773	/** Coro ********************************************************************/
1583		1774
1584	INLINE void	1775	INLINE void
1585	coro_enq (pTHX_ struct coro *coro)	1776	coro_enq (pTHX_ struct coro *coro)
1586	{	1777	{
1587	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));	1778	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1588	}
1589		1779
1590	INLINE SV *	1780	SvREFCNT_inc_NN (coro->hv);
		1781
		1782	coro->next_ready = 0;
		1783	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
		1784	ready [1] = coro;
		1785	}
		1786
		1787	INLINE struct coro *
1591	coro_deq (pTHX)	1788	coro_deq (pTHX)
1592	{	1789	{
1593	int prio;	1790	int prio;
1594		1791
1595	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1792	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1596	if (AvFILLp (coro_ready [prio]) >= 0)	1793	{
1597	return av_shift (coro_ready [prio]);	1794	struct coro **ready = coro_ready [prio];
		1795
		1796	if (ready [0])
		1797	{
		1798	struct coro *coro = ready [0];
		1799	ready [0] = coro->next_ready;
		1800	return coro;
		1801	}
		1802	}
1598		1803
1599	return 0;	1804	return 0;
		1805	}
		1806
		1807	static void
		1808	invoke_sv_ready_hook_helper (void)
		1809	{
		1810	dTHX;
		1811	dSP;
		1812
		1813	ENTER;
		1814	SAVETMPS;
		1815
		1816	PUSHMARK (SP);
		1817	PUTBACK;
		1818	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1819
		1820	FREETMPS;
		1821	LEAVE;
1600	}	1822	}
1601		1823
1602	static int	1824	static int
1603	api_ready (pTHX_ SV *coro_sv)	1825	api_ready (pTHX_ SV *coro_sv)
1604	{	1826	{
1605	struct coro *coro;
1606	SV *sv_hook;
1607	void (*xs_hook)(void);
1608
1609	coro = SvSTATE (coro_sv);	1827	struct coro *coro = SvSTATE (coro_sv);
1610		1828
1611	if (coro->flags & CF_READY)	1829	if (coro->flags & CF_READY)
1612	return 0;	1830	return 0;
1613		1831
1614	coro->flags |= CF_READY;	1832	coro->flags |= CF_READY;
1615		1833
1616	sv_hook = coro_nready ? 0 : coro_readyhook;
1617	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1618
1619	coro_enq (aTHX_ coro);	1834	coro_enq (aTHX_ coro);
1620	++coro_nready;
1621		1835
1622	if (sv_hook)	1836	if (!coro_nready++)
1623	{	1837	if (coroapi.readyhook)
1624	dSP;	1838	coroapi.readyhook ();
1625
1626	ENTER;
1627	SAVETMPS;
1628
1629	PUSHMARK (SP);
1630	PUTBACK;
1631	call_sv (sv_hook, G_VOID | G_DISCARD);
1632
1633	FREETMPS;
1634	LEAVE;
1635	}
1636
1637	if (xs_hook)
1638	xs_hook ();
1639		1839
1640	return 1;	1840	return 1;
1641	}	1841	}
1642		1842
1643	static int	1843	static int
…		…
1666	static void	1866	static void
1667	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1867	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1668	{	1868	{
1669	for (;;)	1869	for (;;)
1670	{	1870	{
1671	SV *next_sv = coro_deq (aTHX);	1871	struct coro *next = coro_deq (aTHX);
1672		1872
1673	if (expect_true (next_sv))	1873	if (expect_true (next))
1674	{	1874	{
1675	struct coro *next = SvSTATE_hv (next_sv);
1676
1677	/* cannot transfer to destroyed coros, skip and look for next */	1875	/* cannot transfer to destroyed coros, skip and look for next */
1678	if (expect_false (next->flags & CF_DESTROYED))	1876	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1679	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */	1877	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1680	else	1878	else
1681	{	1879	{
1682	next->flags &= ~CF_READY;	1880	next->flags &= ~CF_READY;
1683	--coro_nready;	1881	--coro_nready;
1684		1882
…		…
1690	{	1888	{
1691	/* nothing to schedule: call the idle handler */	1889	/* nothing to schedule: call the idle handler */
1692	if (SvROK (sv_idle)	1890	if (SvROK (sv_idle)
1693	&& SvOBJECT (SvRV (sv_idle)))	1891	&& SvOBJECT (SvRV (sv_idle)))
1694	{	1892	{
		1893	if (SvRV (sv_idle) == SvRV (coro_current))
		1894	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1895
1695	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	1896	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1696	api_ready (aTHX_ SvRV (sv_idle));	1897	api_ready (aTHX_ SvRV (sv_idle));
1697	--coro_nready;	1898	--coro_nready;
1698	}	1899	}
1699	else	1900	else
1700	{	1901	{
		1902	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1701	dSP;	1903	dSP;
1702		1904
1703	ENTER;	1905	ENTER;
1704	SAVETMPS;	1906	SAVETMPS;
1705		1907
…		…
1815		2017
1816	static void	2018	static void
1817	coro_call_on_destroy (pTHX_ struct coro *coro)	2019	coro_call_on_destroy (pTHX_ struct coro *coro)
1818	{	2020	{
1819	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);	2021	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
1820	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1821		2022
1822	if (on_destroyp)	2023	if (on_destroyp)
1823	{	2024	{
1824	AV *on_destroy = (AV *)SvRV (*on_destroyp);	2025	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		2026	AV *on_destroy = sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*on_destroyp)));
		2027	AV *status = statusp ? sv_2mortal (SvREFCNT_inc ((AV *)SvRV (*statusp))) : 0;
1825		2028
1826	while (AvFILLp (on_destroy) >= 0)	2029	while (AvFILLp (on_destroy) >= 0)
1827	{	2030	{
1828	dSP; /* don't disturb outer sp */	2031	dSP; /* don't disturb outer sp */
1829	SV *cb = av_pop (on_destroy);	2032	SV *cb = av_pop (on_destroy);
…		…
1831	PUSHMARK (SP);	2034	PUSHMARK (SP);
1832		2035
1833	if (statusp)	2036	if (statusp)
1834	{	2037	{
1835	int i;	2038	int i;
1836	AV *status = (AV *)SvRV (*statusp);
1837	EXTEND (SP, AvFILLp (status) + 1);	2039	EXTEND (SP, AvFILLp (status) + 1);
1838		2040
1839	for (i = 0; i <= AvFILLp (status); ++i)	2041	for (i = 0; i <= AvFILLp (status); ++i)
1840	PUSHs (AvARRAY (status)[i]);	2042	PUSHs (AvARRAY (status)[i]);
1841	}	2043	}
…		…
1845	}	2047	}
1846	}	2048	}
1847	}	2049	}
1848		2050
1849	static void	2051	static void
1850	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2052	coro_set_status (HV *coro_hv, SV **arg, int items)
1851	{	2053	{
1852	int i;
1853	HV *hv = (HV *)SvRV (coro_current);
1854	AV *av = newAV ();	2054	AV *av = newAV ();
1855		2055
		2056	/* items are actually not so common, so optimise for this case */
		2057	if (items)
		2058	{
		2059	int i;
		2060
1856	av_extend (av, items - 1);	2061	av_extend (av, items - 1);
		2062
1857	for (i = 0; i < items; ++i)	2063	for (i = 0; i < items; ++i)
1858	av_push (av, SvREFCNT_inc_NN (arg [i]));	2064	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2065	}
1859		2066
1860	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2067	hv_store (coro_hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		2068	}
1861		2069
		2070	static void
		2071	slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
		2072	{
1862	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */	2073	av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1863	api_ready (aTHX_ sv_manager);	2074	api_ready (aTHX_ sv_manager);
1864		2075
1865	frame->prepare = prepare_schedule;	2076	frame->prepare = prepare_schedule;
1866	frame->check = slf_check_repeat;	2077	frame->check = slf_check_repeat;
		2078
		2079	/* as a minor optimisation, we could unwind all stacks here */
		2080	/* but that puts extra pressure on pp_slf, and is not worth much */
		2081	/*coro_unwind_stacks (aTHX);*/
		2082	}
		2083
		2084	static void
		2085	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2086	{
		2087	HV *coro_hv = (HV *)SvRV (coro_current);
		2088
		2089	coro_set_status (coro_hv, arg, items);
		2090	slf_init_terminate_cancel_common (frame, coro_hv);
		2091	}
		2092
		2093	static void
		2094	slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2095	{
		2096	HV *coro_hv;
		2097	struct coro *coro;
		2098
		2099	if (items <= 0)
		2100	croak ("Coro::cancel called without coro object,");
		2101
		2102	coro = SvSTATE (arg [0]);
		2103	coro_hv = coro->hv;
		2104
		2105	coro_set_status (coro_hv, arg + 1, items - 1);
		2106
		2107	if (expect_false (coro->flags & CF_NOCANCEL))
		2108	{
		2109	/* coro currently busy cancelling something, so just notify it */
		2110	coro->slf_frame.data = (void *)coro;
		2111
		2112	frame->prepare = prepare_nop;
		2113	frame->check = slf_check_nop;
		2114	}
		2115	else if (coro_hv == (HV *)SvRV (coro_current))
		2116	{
		2117	/* cancelling the current coro is allowed, and equals terminate */
		2118	slf_init_terminate_cancel_common (frame, coro_hv);
		2119	}
		2120	else
		2121	{
		2122	struct coro *self = SvSTATE_current;
		2123
		2124	/* otherwise we cancel directly, purely for speed reasons
		2125	* unfortunately, this requires some magic trickery, as
		2126	* somebody else could cancel us, so we have to fight the cancellation.
		2127	* this is ugly, and hopefully fully worth the extra speed.
		2128	* besides, I can't get the slow-but-safe version working...
		2129	*/
		2130	slf_frame.data = 0;
		2131	self->flags |= CF_NOCANCEL;
		2132
		2133	coro_state_destroy (aTHX_ coro);
		2134	coro_call_on_destroy (aTHX_ coro);
		2135
		2136	self->flags &= ~CF_NOCANCEL;
		2137
		2138	if (slf_frame.data)
		2139	{
		2140	/* while we were busy we have been cancelled, so terminate */
		2141	slf_init_terminate_cancel_common (frame, self->hv);
		2142	}
		2143	else
		2144	{
		2145	frame->prepare = prepare_nop;
		2146	frame->check = slf_check_nop;
		2147	}
		2148	}
1867	}	2149	}
1868		2150
1869	/*****************************************************************************/	2151	/*****************************************************************************/
1870	/* async pool handler */	2152	/* async pool handler */
1871		2153
…		…
1949		2231
1950	static void	2232	static void
1951	coro_rouse_callback (pTHX_ CV *cv)	2233	coro_rouse_callback (pTHX_ CV *cv)
1952	{	2234	{
1953	dXSARGS;	2235	dXSARGS;
1954	SV *data = (SV *)GENSUB_ARG;	2236	SV *data = (SV *)S_GENSUB_ARG;
1955		2237
1956	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2238	if (SvTYPE (SvRV (data)) != SVt_PVAV)
1957	{	2239	{
1958	/* first call, set args */	2240	/* first call, set args */
		2241	SV *coro = SvRV (data);
1959	AV *av = newAV ();	2242	AV *av = newAV ();
1960	SV *coro = SvRV (data);
1961		2243
1962	SvRV_set (data, (SV *)av);	2244	SvRV_set (data, (SV *)av);
1963	api_ready (aTHX_ coro);
1964	SvREFCNT_dec (coro);
1965		2245
1966	/* better take a full copy of the arguments */	2246	/* better take a full copy of the arguments */
1967	while (items--)	2247	while (items--)
1968	av_store (av, items, newSVsv (ST (items)));	2248	av_store (av, items, newSVsv (ST (items)));
		2249
		2250	api_ready (aTHX_ coro);
		2251	SvREFCNT_dec (coro);
1969	}	2252	}
1970		2253
1971	XSRETURN_EMPTY;	2254	XSRETURN_EMPTY;
1972	}	2255	}
1973		2256
…		…
1990		2273
1991	EXTEND (SP, AvFILLp (av) + 1);	2274	EXTEND (SP, AvFILLp (av) + 1);
1992	for (i = 0; i <= AvFILLp (av); ++i)	2275	for (i = 0; i <= AvFILLp (av); ++i)
1993	PUSHs (sv_2mortal (AvARRAY (av)[i]));	2276	PUSHs (sv_2mortal (AvARRAY (av)[i]));
1994		2277
1995	/* we have stolen the elements, so ste length to zero and free */	2278	/* we have stolen the elements, so set length to zero and free */
1996	AvFILLp (av) = -1;	2279	AvFILLp (av) = -1;
1997	av_undef (av);	2280	av_undef (av);
1998		2281
1999	PUTBACK;	2282	PUTBACK;
2000	}	2283	}
…		…
2024	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2307	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2025	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2308	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2026	croak ("Coro::rouse_wait called with illegal callback argument,");	2309	croak ("Coro::rouse_wait called with illegal callback argument,");
2027		2310
2028	{	2311	{
2029	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2312	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2030	SV *data = (SV *)GENSUB_ARG;	2313	SV *data = (SV *)S_GENSUB_ARG;
2031		2314
2032	frame->data = (void *)data;	2315	frame->data = (void *)data;
2033	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2316	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2034	frame->check = slf_check_rouse_wait;	2317	frame->check = slf_check_rouse_wait;
2035	}	2318	}
…		…
2039	coro_new_rouse_cb (pTHX)	2322	coro_new_rouse_cb (pTHX)
2040	{	2323	{
2041	HV *hv = (HV *)SvRV (coro_current);	2324	HV *hv = (HV *)SvRV (coro_current);
2042	struct coro *coro = SvSTATE_hv (hv);	2325	struct coro *coro = SvSTATE_hv (hv);
2043	SV *data = newRV_inc ((SV *)hv);	2326	SV *data = newRV_inc ((SV *)hv);
2044	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2327	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2045		2328
2046	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2329	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2047	SvREFCNT_dec (data); /* magicext increases the refcount */	2330	SvREFCNT_dec (data); /* magicext increases the refcount */
2048		2331
2049	SvREFCNT_dec (coro->rouse_cb);	2332	SvREFCNT_dec (coro->rouse_cb);
…		…
2274	if (PL_op->op_flags & OPf_STACKED)	2557	if (PL_op->op_flags & OPf_STACKED)
2275	{	2558	{
2276	if (items > slf_arga)	2559	if (items > slf_arga)
2277	{	2560	{
2278	slf_arga = items;	2561	slf_arga = items;
2279	free (slf_argv);	2562	Safefree (slf_argv);
2280	slf_argv = malloc (slf_arga * sizeof (SV *));	2563	New (0, slf_argv, slf_arga, SV *);
2281	}	2564	}
2282		2565
2283	slf_argc = items;	2566	slf_argc = items;
2284		2567
2285	for (i = 0; i < items; ++i)	2568	for (i = 0; i < items; ++i)
…		…
2290		2573
2291	PL_op->op_ppaddr = pp_slf;	2574	PL_op->op_ppaddr = pp_slf;
2292	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */	2575	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2293		2576
2294	PL_op = (OP *)&slf_restore;	2577	PL_op = (OP *)&slf_restore;
		2578	}
		2579
		2580	/*****************************************************************************/
		2581	/* dynamic wind */
		2582
		2583	static void
		2584	on_enterleave_call (pTHX_ SV *cb)
		2585	{
		2586	dSP;
		2587
		2588	PUSHSTACK;
		2589
		2590	PUSHMARK (SP);
		2591	PUTBACK;
		2592	call_sv (cb, G_VOID | G_DISCARD);
		2593	SPAGAIN;
		2594
		2595	POPSTACK;
		2596	}
		2597
		2598	static SV *
		2599	coro_avp_pop_and_free (pTHX_ AV **avp)
		2600	{
		2601	AV *av = *avp;
		2602	SV *res = av_pop (av);
		2603
		2604	if (AvFILLp (av) < 0)
		2605	{
		2606	*avp = 0;
		2607	SvREFCNT_dec (av);
		2608	}
		2609
		2610	return res;
		2611	}
		2612
		2613	static void
		2614	coro_pop_on_enter (pTHX_ void *coro)
		2615	{
		2616	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
		2617	SvREFCNT_dec (cb);
		2618	}
		2619
		2620	static void
		2621	coro_pop_on_leave (pTHX_ void *coro)
		2622	{
		2623	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
		2624	on_enterleave_call (aTHX_ sv_2mortal (cb));
2295	}	2625	}
2296		2626
2297	/*****************************************************************************/	2627	/*****************************************************************************/
2298	/* PerlIO::cede */	2628	/* PerlIO::cede */
2299		2629
…		…
2373	/* Coro::Semaphore & Coro::Signal */	2703	/* Coro::Semaphore & Coro::Signal */
2374		2704
2375	static SV *	2705	static SV *
2376	coro_waitarray_new (pTHX_ int count)	2706	coro_waitarray_new (pTHX_ int count)
2377	{	2707	{
2378	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2708	/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2379	AV *av = newAV ();	2709	AV *av = newAV ();
2380	SV **ary;	2710	SV **ary;
2381		2711
2382	/* unfortunately, building manually saves memory */	2712	/* unfortunately, building manually saves memory */
2383	Newx (ary, 2, SV *);	2713	Newx (ary, 2, SV *);
…		…
2525	{	2855	{
2526	if (items >= 2)	2856	if (items >= 2)
2527	{	2857	{
2528	/* callback form */	2858	/* callback form */
2529	AV *av = (AV *)SvRV (arg [0]);	2859	AV *av = (AV *)SvRV (arg [0]);
2530	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2860	SV *cb_cv = s_get_cv_croak (arg [1]);
2531		2861
2532	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));	2862	av_push (av, SvREFCNT_inc_NN (cb_cv));
2533		2863
2534	if (SvIVX (AvARRAY (av)[0]) > 0)	2864	if (SvIVX (AvARRAY (av)[0]) > 0)
2535	coro_semaphore_adjust (aTHX_ av, 0);	2865	coro_semaphore_adjust (aTHX_ av, 0);
2536		2866
2537	frame->prepare = prepare_nop;	2867	frame->prepare = prepare_nop;
…		…
2561	AvARRAY (av)[0] = AvARRAY (av)[1];	2891	AvARRAY (av)[0] = AvARRAY (av)[1];
2562	AvARRAY (av)[1] = cb;	2892	AvARRAY (av)[1] = cb;
2563		2893
2564	cb = av_shift (av);	2894	cb = av_shift (av);
2565		2895
		2896	if (SvTYPE (cb) == SVt_PVCV)
		2897	{
		2898	dSP;
		2899	PUSHMARK (SP);
		2900	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2901	PUTBACK;
		2902	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2903	}
		2904	else
		2905	{
2566	api_ready (aTHX_ cb);	2906	api_ready (aTHX_ cb);
2567	sv_setiv (cb, 0); /* signal waiter */	2907	sv_setiv (cb, 0); /* signal waiter */
		2908	}
		2909
2568	SvREFCNT_dec (cb);	2910	SvREFCNT_dec (cb);
2569		2911
2570	--count;	2912	--count;
2571	}	2913	}
2572	}	2914	}
…		…
2581	static void	2923	static void
2582	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2924	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2583	{	2925	{
2584	AV *av = (AV *)SvRV (arg [0]);	2926	AV *av = (AV *)SvRV (arg [0]);
2585		2927
		2928	if (items >= 2)
		2929	{
		2930	SV *cb_cv = s_get_cv_croak (arg [1]);
		2931	av_push (av, SvREFCNT_inc_NN (cb_cv));
		2932
2586	if (SvIVX (AvARRAY (av)[0]))	2933	if (SvIVX (AvARRAY (av)[0]))
		2934	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
		2935
		2936	frame->prepare = prepare_nop;
		2937	frame->check = slf_check_nop;
		2938	}
		2939	else if (SvIVX (AvARRAY (av)[0]))
2587	{	2940	{
2588	SvIVX (AvARRAY (av)[0]) = 0;	2941	SvIVX (AvARRAY (av)[0]) = 0;
2589	frame->prepare = prepare_nop;	2942	frame->prepare = prepare_nop;
2590	frame->check = slf_check_nop;	2943	frame->check = slf_check_nop;
2591	}	2944	}
2592	else	2945	else
2593	{	2946	{
2594	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */	2947	SV *waiter = newSVsv (coro_current); /* owned by signal av */
2595		2948
2596	av_push (av, waiter);	2949	av_push (av, waiter);
2597		2950
2598	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */	2951	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2599	frame->prepare = prepare_schedule;	2952	frame->prepare = prepare_schedule;
…		…
2617		2970
2618	static void	2971	static void
2619	coro_aio_callback (pTHX_ CV *cv)	2972	coro_aio_callback (pTHX_ CV *cv)
2620	{	2973	{
2621	dXSARGS;	2974	dXSARGS;
2622	AV *state = (AV *)GENSUB_ARG;	2975	AV *state = (AV *)S_GENSUB_ARG;
2623	SV *coro = av_pop (state);	2976	SV *coro = av_pop (state);
2624	SV *data_sv = newSV (sizeof (struct io_state));	2977	SV *data_sv = newSV (sizeof (struct io_state));
2625		2978
2626	av_extend (state, items - 1);	2979	av_extend (state, items - 1);
2627		2980
…		…
2741		3094
2742	for (i = 0; i < items; ++i)	3095	for (i = 0; i < items; ++i)
2743	PUSHs (arg [i]);	3096	PUSHs (arg [i]);
2744		3097
2745	/* now push the callback closure */	3098	/* now push the callback closure */
2746	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	3099	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2747		3100
2748	/* now call the AIO function - we assume our request is uncancelable */	3101	/* now call the AIO function - we assume our request is uncancelable */
2749	PUTBACK;	3102	PUTBACK;
2750	call_sv ((SV *)req, G_VOID | G_DISCARD);	3103	call_sv ((SV *)req, G_VOID | G_DISCARD);
2751	}	3104	}
2752		3105
2753	/* now that the requets is going, we loop toll we have a result */	3106	/* now that the request is going, we loop till we have a result */
2754	frame->data = (void *)state;	3107	frame->data = (void *)state;
2755	frame->prepare = prepare_schedule;	3108	frame->prepare = prepare_schedule;
2756	frame->check = slf_check_aio_req;	3109	frame->check = slf_check_aio_req;
2757	}	3110	}
2758		3111
…		…
2769	/*****************************************************************************/	3122	/*****************************************************************************/
2770		3123
2771	#if CORO_CLONE	3124	#if CORO_CLONE
2772	# include "clone.c"	3125	# include "clone.c"
2773	#endif	3126	#endif
		3127
		3128	/*****************************************************************************/
		3129
		3130	static SV *
		3131	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		3132	{
		3133	SV *coro_sv;
		3134	struct coro *coro;
		3135	MAGIC *mg;
		3136	HV *hv;
		3137	SV *cb;
		3138	int i;
		3139
		3140	if (argc > 0)
		3141	{
		3142	cb = s_get_cv_croak (argv [0]);
		3143
		3144	if (!is_coro)
		3145	{
		3146	if (CvISXSUB (cb))
		3147	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3148
		3149	if (!CvROOT (cb))
		3150	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3151	}
		3152	}
		3153
		3154	Newz (0, coro, 1, struct coro);
		3155	coro->args = newAV ();
		3156	coro->flags = CF_NEW;
		3157
		3158	if (coro_first) coro_first->prev = coro;
		3159	coro->next = coro_first;
		3160	coro_first = coro;
		3161
		3162	coro->hv = hv = newHV ();
		3163	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3164	mg->mg_flags |= MGf_DUP;
		3165	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3166
		3167	if (argc > 0)
		3168	{
		3169	av_extend (coro->args, argc + is_coro - 1);
		3170
		3171	if (is_coro)
		3172	{
		3173	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3174	cb = (SV *)cv_coro_run;
		3175	}
		3176
		3177	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3178
		3179	for (i = 1; i < argc; i++)
		3180	av_push (coro->args, newSVsv (argv [i]));
		3181	}
		3182
		3183	return coro_sv;
		3184	}
2774		3185
2775	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3186	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2776		3187
2777	PROTOTYPES: DISABLE	3188	PROTOTYPES: DISABLE
2778		3189
…		…
2831	coroapi.prepare_nop = prepare_nop;	3242	coroapi.prepare_nop = prepare_nop;
2832	coroapi.prepare_schedule = prepare_schedule;	3243	coroapi.prepare_schedule = prepare_schedule;
2833	coroapi.prepare_cede = prepare_cede;	3244	coroapi.prepare_cede = prepare_cede;
2834	coroapi.prepare_cede_notself = prepare_cede_notself;	3245	coroapi.prepare_cede_notself = prepare_cede_notself;
2835		3246
2836	{	3247	time_init (aTHX);
2837	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2838		3248
2839	if (!svp) croak ("Time::HiRes is required");
2840	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2841
2842	nvtime = INT2PTR (double (*)(), SvIV (*svp));
2843	}
2844
2845	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	3249	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2846	}	3250	}
2847		3251
2848	SV *	3252	SV *
2849	new (char *klass, ...)	3253	new (SV *klass, ...)
2850	ALIAS:	3254	ALIAS:
2851	Coro::new = 1	3255	Coro::new = 1
2852	CODE:	3256	CODE:
2853	{	3257	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2854	struct coro *coro;	3258	OUTPUT:
2855	MAGIC *mg;
2856	HV *hv;
2857	CV *cb;
2858	int i;
2859
2860	if (items > 1)
2861	{
2862	cb = coro_sv_2cv (aTHX_ ST (1));
2863
2864	if (!ix)
2865	{
2866	if (CvISXSUB (cb))
2867	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2868
2869	if (!CvROOT (cb))
2870	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2871	}
2872	}
2873
2874	Newz (0, coro, 1, struct coro);
2875	coro->args = newAV ();
2876	coro->flags = CF_NEW;
2877
2878	if (coro_first) coro_first->prev = coro;
2879	coro->next = coro_first;
2880	coro_first = coro;
2881
2882	coro->hv = hv = newHV ();
2883	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2884	mg->mg_flags |= MGf_DUP;
2885	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2886
2887	if (items > 1)
2888	{
2889	av_extend (coro->args, items - 1 + ix - 1);
2890
2891	if (ix)
2892	{
2893	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2894	cb = cv_coro_run;
2895	}
2896
2897	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2898
2899	for (i = 2; i < items; i++)
2900	av_push (coro->args, newSVsv (ST (i)));
2901	}
2902	}
2903	OUTPUT:
2904	RETVAL	3259	RETVAL
2905		3260
2906	void	3261	void
2907	transfer (...)	3262	transfer (...)
2908	PROTOTYPE: $$	3263	PROTOTYPE: $$
2909	CODE:	3264	CODE:
2910	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3265	CORO_EXECUTE_SLF_XS (slf_init_transfer);
2911		3266
2912	bool
2913	_destroy (SV *coro_sv)
2914	CODE:
2915	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
2916	OUTPUT:
2917	RETVAL
2918
2919	void	3267	void
2920	_exit (int code)	3268	_exit (int code)
2921	PROTOTYPE: $	3269	PROTOTYPE: $
2922	CODE:	3270	CODE:
2923	_exit (code);	3271	_exit (code);
…		…
2925	SV *	3273	SV *
2926	clone (Coro::State coro)	3274	clone (Coro::State coro)
2927	CODE:	3275	CODE:
2928	{	3276	{
2929	#if CORO_CLONE	3277	#if CORO_CLONE
2930	struct coro *ncoro = coro_clone (coro);	3278	struct coro *ncoro = coro_clone (aTHX_ coro);
2931	MAGIC *mg;	3279	MAGIC *mg;
2932	/* TODO: too much duplication */	3280	/* TODO: too much duplication */
2933	ncoro->hv = newHV ();	3281	ncoro->hv = newHV ();
2934	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);	3282	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2935	mg->mg_flags |= MGf_DUP;	3283	mg->mg_flags |= MGf_DUP;
…		…
2997	eval = 1	3345	eval = 1
2998	CODE:	3346	CODE:
2999	{	3347	{
3000	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3348	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3001	{	3349	{
3002	struct coro temp;	3350	struct coro *current = SvSTATE_current;
		3351	struct CoroSLF slf_save;
3003		3352
3004	if (!(coro->flags & CF_RUNNING))	3353	if (current != coro)
3005	{	3354	{
3006	PUTBACK;	3355	PUTBACK;
3007	save_perl (aTHX_ &temp);	3356	save_perl (aTHX_ current);
3008	load_perl (aTHX_ coro);	3357	load_perl (aTHX_ coro);
		3358	/* the coro is most likely in an active SLF call.
		3359	* while not strictly required (the code we execute is
		3360	* not allowed to call any SLF functions), it's cleaner
		3361	* to reinitialise the slf_frame and restore it later.
		3362	* This might one day allow us to actually do SLF calls
		3363	* from code executed here.
		3364	*/
		3365	slf_save = slf_frame;
		3366	slf_frame.prepare = 0;
		3367	SPAGAIN;
3009	}	3368	}
3010		3369
3011	{
3012	dSP;
3013	ENTER;
3014	SAVETMPS;
3015	PUTBACK;
3016	PUSHSTACK;	3370	PUSHSTACK;
		3371
3017	PUSHMARK (SP);	3372	PUSHMARK (SP);
		3373	PUTBACK;
3018		3374
3019	if (ix)	3375	if (ix)
3020	eval_sv (coderef, 0);	3376	eval_sv (coderef, 0);
3021	else	3377	else
3022	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	3378	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
3023		3379
3024	POPSTACK;	3380	POPSTACK;
3025	SPAGAIN;	3381	SPAGAIN;
3026	FREETMPS;
3027	LEAVE;
3028	PUTBACK;
3029	}
3030		3382
3031	if (!(coro->flags & CF_RUNNING))	3383	if (current != coro)
3032	{	3384	{
		3385	PUTBACK;
		3386	slf_frame = slf_save;
3033	save_perl (aTHX_ coro);	3387	save_perl (aTHX_ coro);
3034	load_perl (aTHX_ &temp);	3388	load_perl (aTHX_ current);
3035	SPAGAIN;	3389	SPAGAIN;
3036	}	3390	}
3037	}	3391	}
3038	}	3392	}
3039		3393
…		…
3043	ALIAS:	3397	ALIAS:
3044	is_ready = CF_READY	3398	is_ready = CF_READY
3045	is_running = CF_RUNNING	3399	is_running = CF_RUNNING
3046	is_new = CF_NEW	3400	is_new = CF_NEW
3047	is_destroyed = CF_DESTROYED	3401	is_destroyed = CF_DESTROYED
		3402	is_suspended = CF_SUSPENDED
3048	CODE:	3403	CODE:
3049	RETVAL = boolSV (coro->flags & ix);	3404	RETVAL = boolSV (coro->flags & ix);
3050	OUTPUT:	3405	OUTPUT:
3051	RETVAL	3406	RETVAL
3052		3407
3053	void	3408	void
3054	throw (Coro::State self, SV *throw = &PL_sv_undef)	3409	throw (Coro::State self, SV *exception = &PL_sv_undef)
3055	PROTOTYPE: $;$	3410	PROTOTYPE: $;$
3056	CODE:	3411	CODE:
3057	{	3412	{
3058	struct coro *current = SvSTATE_current;	3413	struct coro *current = SvSTATE_current;
3059	SV **throwp = self == current ? &CORO_THROW : &self->except;	3414	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3060	SvREFCNT_dec (*throwp);	3415	SvREFCNT_dec (*exceptionp);
3061	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3416	SvGETMAGIC (exception);
		3417	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3062	}	3418	}
3063		3419
3064	void	3420	void
3065	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3421	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3066	PROTOTYPE: $;$	3422	PROTOTYPE: $;$
…		…
3117	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	3473	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3118		3474
3119	SV *tmp = *src; *src = *dst; *dst = tmp;	3475	SV *tmp = *src; *src = *dst; *dst = tmp;
3120	}	3476	}
3121		3477
		3478	void
		3479	cancel (Coro::State self)
		3480	CODE:
		3481	coro_state_destroy (aTHX_ self);
		3482
		3483	SV *
		3484	enable_times (int enabled = enable_times)
		3485	CODE:
		3486	{
		3487	RETVAL = boolSV (enable_times);
		3488
		3489	if (enabled != enable_times)
		3490	{
		3491	enable_times = enabled;
		3492
		3493	coro_times_update ();
		3494	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3495	}
		3496	}
		3497	OUTPUT:
		3498	RETVAL
		3499
		3500	void
		3501	times (Coro::State self)
		3502	PPCODE:
		3503	{
		3504	struct coro *current = SvSTATE (coro_current);
		3505
		3506	if (expect_false (current == self))
		3507	{
		3508	coro_times_update ();
		3509	coro_times_add (SvSTATE (coro_current));
		3510	}
		3511
		3512	EXTEND (SP, 2);
		3513	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3514	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3515
		3516	if (expect_false (current == self))
		3517	coro_times_sub (SvSTATE (coro_current));
		3518	}
		3519
		3520	void
		3521	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3522	CODE:
		3523	{
		3524	struct coro *current = SvSTATE_current;
		3525
		3526	if (current == coro)
		3527	SWAP_SVS (current);
		3528
		3529	if (!coro->swap_sv)
		3530	coro->swap_sv = newAV ();
		3531
		3532	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3533	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3534
		3535	if (current == coro)
		3536	SWAP_SVS (current);
		3537	}
		3538
3122		3539
3123	MODULE = Coro::State PACKAGE = Coro	3540	MODULE = Coro::State PACKAGE = Coro
3124		3541
3125	BOOT:	3542	BOOT:
3126	{	3543	{
3127	int i;
3128
3129	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3544	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3130	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3545	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3131	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);	3546	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3132	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);	3547	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3133	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3548	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3134	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	3549	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3135	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);	3550	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3136	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);	3551	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3137	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3552	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3138		3553
3139	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3554	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3140	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3555	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3141	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3556	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3142	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3557	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3143		3558
3144	coro_stash = gv_stashpv ("Coro", TRUE);	3559	coro_stash = gv_stashpv ("Coro", TRUE);
3145		3560
3146	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3561	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3147	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3562	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3148	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	3563	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3149	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	3564	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3150	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	3565	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3151	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	3566	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3152
3153	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3154	coro_ready[i] = newAV ();
3155		3567
3156	{	3568	{
3157	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3569	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3158		3570
3159	coroapi.schedule = api_schedule;	3571	coroapi.schedule = api_schedule;
…		…
3169	sv_setiv (sv, (IV)&coroapi);	3581	sv_setiv (sv, (IV)&coroapi);
3170	SvREADONLY_on (sv);	3582	SvREADONLY_on (sv);
3171	}	3583	}
3172	}	3584	}
3173		3585
		3586	SV *
		3587	async (...)
		3588	PROTOTYPE: &@
		3589	CODE:
		3590	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3591	api_ready (aTHX_ RETVAL);
		3592	OUTPUT:
		3593	RETVAL
		3594
		3595	void
		3596	_destroy (Coro::State coro)
		3597	CODE:
		3598	/* used by the manager thread */
		3599	coro_state_destroy (aTHX_ coro);
		3600	coro_call_on_destroy (aTHX_ coro);
		3601
3174	void	3602	void
3175	terminate (...)	3603	terminate (...)
3176	CODE:	3604	CODE:
3177	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3605	CORO_EXECUTE_SLF_XS (slf_init_terminate);
3178		3606
3179	void	3607	void
		3608	cancel (...)
		3609	CODE:
		3610	CORO_EXECUTE_SLF_XS (slf_init_cancel);
		3611
		3612	void
3180	schedule (...)	3613	schedule (...)
3181	CODE:	3614	CODE:
3182	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3615	CORO_EXECUTE_SLF_XS (slf_init_schedule);
3183		3616
3184	void	3617	void
…		…
3198		3631
3199	void	3632	void
3200	cede_notself (...)	3633	cede_notself (...)
3201	CODE:	3634	CODE:
3202	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);	3635	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3203
3204	void
3205	_cancel (Coro::State self)
3206	CODE:
3207	coro_state_destroy (aTHX_ self);
3208	coro_call_on_destroy (aTHX_ self);
3209		3636
3210	void	3637	void
3211	_set_current (SV *current)	3638	_set_current (SV *current)
3212	PROTOTYPE: $	3639	PROTOTYPE: $
3213	CODE:	3640	CODE:
…		…
3217	void	3644	void
3218	_set_readyhook (SV *hook)	3645	_set_readyhook (SV *hook)
3219	PROTOTYPE: $	3646	PROTOTYPE: $
3220	CODE:	3647	CODE:
3221	SvREFCNT_dec (coro_readyhook);	3648	SvREFCNT_dec (coro_readyhook);
		3649	SvGETMAGIC (hook);
		3650	if (SvOK (hook))
		3651	{
3222	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3652	coro_readyhook = newSVsv (hook);
		3653	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3654	}
		3655	else
		3656	{
		3657	coro_readyhook = 0;
		3658	CORO_READYHOOK = 0;
		3659	}
3223		3660
3224	int	3661	int
3225	prio (Coro::State coro, int newprio = 0)	3662	prio (Coro::State coro, int newprio = 0)
3226	PROTOTYPE: $;$	3663	PROTOTYPE: $;$
3227	ALIAS:	3664	ALIAS:
…		…
3233	if (items > 1)	3670	if (items > 1)
3234	{	3671	{
3235	if (ix)	3672	if (ix)
3236	newprio = coro->prio - newprio;	3673	newprio = coro->prio - newprio;
3237		3674
3238	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3675	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3239	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3676	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3240		3677
3241	coro->prio = newprio;	3678	coro->prio = newprio;
3242	}	3679	}
3243	}	3680	}
3244	OUTPUT:	3681	OUTPUT:
…		…
3259	RETVAL = coro_nready;	3696	RETVAL = coro_nready;
3260	OUTPUT:	3697	OUTPUT:
3261	RETVAL	3698	RETVAL
3262		3699
3263	void	3700	void
		3701	suspend (Coro::State self)
		3702	PROTOTYPE: $
		3703	CODE:
		3704	self->flags |= CF_SUSPENDED;
		3705
		3706	void
		3707	resume (Coro::State self)
		3708	PROTOTYPE: $
		3709	CODE:
		3710	self->flags &= ~CF_SUSPENDED;
		3711
		3712	void
3264	_pool_handler (...)	3713	_pool_handler (...)
3265	CODE:	3714	CODE:
3266	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);	3715	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3267		3716
3268	void	3717	void
…		…
3279	for (i = 1; i < items; ++i)	3728	for (i = 1; i < items; ++i)
3280	av_push (av, SvREFCNT_inc_NN (ST (i)));	3729	av_push (av, SvREFCNT_inc_NN (ST (i)));
3281		3730
3282	if ((SV *)hv == &PL_sv_undef)	3731	if ((SV *)hv == &PL_sv_undef)
3283	{	3732	{
3284	PUSHMARK (SP);	3733	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3285	EXTEND (SP, 2);
3286	PUSHs (sv_Coro);
3287	PUSHs ((SV *)cv_pool_handler);
3288	PUTBACK;
3289	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3290	SPAGAIN;
3291
3292	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3734	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3735	SvREFCNT_dec (sv);
3293	}	3736	}
3294		3737
3295	{	3738	{
3296	struct coro *coro = SvSTATE_hv (hv);	3739	struct coro *coro = SvSTATE_hv (hv);
3297		3740
…		…
3321	rouse_wait (...)	3764	rouse_wait (...)
3322	PROTOTYPE: ;$	3765	PROTOTYPE: ;$
3323	PPCODE:	3766	PPCODE:
3324	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);	3767	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3325		3768
		3769	void
		3770	on_enter (SV *block)
		3771	ALIAS:
		3772	on_leave = 1
		3773	PROTOTYPE: &
		3774	CODE:
		3775	{
		3776	struct coro *coro = SvSTATE_current;
		3777	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
		3778
		3779	block = s_get_cv_croak (block);
		3780
		3781	if (!*avp)
		3782	*avp = newAV ();
		3783
		3784	av_push (*avp, SvREFCNT_inc (block));
		3785
		3786	if (!ix)
		3787	on_enterleave_call (aTHX_ block);
		3788
		3789	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3790	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
		3791	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3792	}
		3793
3326		3794
3327	MODULE = Coro::State PACKAGE = PerlIO::cede	3795	MODULE = Coro::State PACKAGE = PerlIO::cede
3328		3796
3329	BOOT:	3797	BOOT:
3330	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3798	PerlIO_define_layer (aTHX_ &PerlIO_cede);
…		…
3333	MODULE = Coro::State PACKAGE = Coro::Semaphore	3801	MODULE = Coro::State PACKAGE = Coro::Semaphore
3334		3802
3335	SV *	3803	SV *
3336	new (SV *klass, SV *count = 0)	3804	new (SV *klass, SV *count = 0)
3337	CODE:	3805	CODE:
		3806	{
		3807	int semcnt = 1;
		3808
		3809	if (count)
		3810	{
		3811	SvGETMAGIC (count);
		3812
		3813	if (SvOK (count))
		3814	semcnt = SvIV (count);
		3815	}
		3816
3338	RETVAL = sv_bless (	3817	RETVAL = sv_bless (
3339	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),	3818	coro_waitarray_new (aTHX_ semcnt),
3340	GvSTASH (CvGV (cv))	3819	GvSTASH (CvGV (cv))
3341	);	3820	);
		3821	}
3342	OUTPUT:	3822	OUTPUT:
3343	RETVAL	3823	RETVAL
3344		3824
3345	# helper for Coro::Channel	3825	# helper for Coro::Channel and others
3346	SV *	3826	SV *
3347	_alloc (int count)	3827	_alloc (int count)
3348	CODE:	3828	CODE:
3349	RETVAL = coro_waitarray_new (aTHX_ count);	3829	RETVAL = coro_waitarray_new (aTHX_ count);
3350	OUTPUT:	3830	OUTPUT:
…		…
3408	for (i = 1; i <= wcount; ++i)	3888	for (i = 1; i <= wcount; ++i)
3409	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));	3889	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3410	}	3890	}
3411	}	3891	}
3412		3892
		3893	MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
		3894
		3895	void
		3896	_may_delete (SV *sem, int count, int extra_refs)
		3897	PPCODE:
		3898	{
		3899	AV *av = (AV *)SvRV (sem);
		3900
		3901	if (SvREFCNT ((SV *)av) == 1 + extra_refs
		3902	&& AvFILLp (av) == 0 /* no waiters, just count */
		3903	&& SvIV (AvARRAY (av)[0]) == count)
		3904	XSRETURN_YES;
		3905
		3906	XSRETURN_NO;
		3907	}
		3908
3413	MODULE = Coro::State PACKAGE = Coro::Signal	3909	MODULE = Coro::State PACKAGE = Coro::Signal
3414		3910
3415	SV *	3911	SV *
3416	new (SV *klass)	3912	new (SV *klass)
3417	CODE:	3913	CODE:
…		…
3488		3984
3489	void	3985	void
3490	_register (char *target, char *proto, SV *req)	3986	_register (char *target, char *proto, SV *req)
3491	CODE:	3987	CODE:
3492	{	3988	{
3493	CV *req_cv = coro_sv_2cv (aTHX_ req);	3989	SV *req_cv = s_get_cv_croak (req);
3494	/* newXSproto doesn't return the CV on 5.8 */	3990	/* newXSproto doesn't return the CV on 5.8 */
3495	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3991	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3496	sv_setpv ((SV *)slf_cv, proto);	3992	sv_setpv ((SV *)slf_cv, proto);
3497	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3993	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3498	}	3994	}
3499		3995
		3996	MODULE = Coro::State PACKAGE = Coro::Select
		3997
		3998	void
		3999	patch_pp_sselect ()
		4000	CODE:
		4001	if (!coro_old_pp_sselect)
		4002	{
		4003	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		4004	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		4005	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		4006	}
		4007
		4008	void
		4009	unpatch_pp_sselect ()
		4010	CODE:
		4011	if (coro_old_pp_sselect)
		4012	{
		4013	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		4014	coro_old_pp_sselect = 0;
		4015	}
		4016

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