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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.358 by root, Mon Jun 29 04:30:25 2009 UTC vs.
Revision 1.399 by root, Thu May 12 23:24:28 2011 UTC

		1	/* this works around a bug in mingw32 providing a non-working setjmp */
		2	#define USE_NO_MINGW_SETJMP_TWO_ARGS
		3
		4	#define NDEBUG 1
		5
1	#include "libcoro/coro.c"	6	#include "libcoro/coro.c"
2		7
3	#define PERL_NO_GET_CONTEXT	8	#define PERL_NO_GET_CONTEXT
4	#define PERL_EXT	9	#define PERL_EXT
5		10
6	#include "EXTERN.h"	11	#include "EXTERN.h"
7	#include "perl.h"	12	#include "perl.h"
8	#include "XSUB.h"	13	#include "XSUB.h"
9	#include "perliol.h"	14	#include "perliol.h"
10		15
11	#include "patchlevel.h"	16	#include "schmorp.h"
12		17
13	#include <stdio.h>	18	#include <stdio.h>
14	#include <errno.h>	19	#include <errno.h>
15	#include <assert.h>	20	#include <assert.h>
16		21
17	#ifdef WIN32	22	#ifndef SVs_PADSTALE
		23	# define SVs_PADSTALE 0
		24	#endif
		25
		26	#if defined(_WIN32)
		27	# undef HAS_GETTIMEOFDAY
18	# undef setjmp	28	# undef setjmp
19	# undef longjmp	29	# undef longjmp
20	# undef _exit	30	# undef _exit
21	# define setjmp _setjmp /* deep magic */	31	# define setjmp _setjmp /* deep magic */
22	#else	32	#else
…		…
51	#endif	61	#endif
52		62
53	/* the maximum number of idle cctx that will be pooled */	63	/* the maximum number of idle cctx that will be pooled */
54	static int cctx_max_idle = 4;	64	static int cctx_max_idle = 4;
55		65
56	#define PERL_VERSION_ATLEAST(a,b,c) \
57	(PERL_REVISION > (a) \
58	|| (PERL_REVISION == (a) \
59	&& (PERL_VERSION > (b) \
60	|| (PERL_VERSION == (b) && PERL_SUBVERSION >= (c)))))
61
62	#if !PERL_VERSION_ATLEAST (5,6,0)
63	# ifndef PL_ppaddr
64	# define PL_ppaddr ppaddr
65	# endif
66	# ifndef call_sv
67	# define call_sv perl_call_sv
68	# endif
69	# ifndef get_sv
70	# define get_sv perl_get_sv
71	# endif
72	# ifndef get_cv
73	# define get_cv perl_get_cv
74	# endif
75	# ifndef IS_PADGV
76	# define IS_PADGV(v) 0
77	# endif
78	# ifndef IS_PADCONST
79	# define IS_PADCONST(v) 0
80	# endif
81	#endif
82
83	/* 5.11 */
84	#ifndef CxHASARGS
85	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
86	#endif
87
88	/* 5.10.0 */
89	#ifndef SvREFCNT_inc_NN
90	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
91	#endif
92
93	/* 5.8.8 */
94	#ifndef GV_NOTQUAL
95	# define GV_NOTQUAL 0
96	#endif
97	#ifndef newSV
98	# define newSV(l) NEWSV(0,l)
99	#endif
100	#ifndef CvISXSUB_on
101	# define CvISXSUB_on(cv) (void)cv
102	#endif
103	#ifndef CvISXSUB
104	# define CvISXSUB(cv) (CvXSUB (cv) ? TRUE : FALSE)
105	#endif
106	#ifndef Newx
107	# define Newx(ptr,nitems,type) New (0,ptr,nitems,type)
108	#endif
109
110	/* 5.8.7 */
111	#ifndef SvRV_set
112	# define SvRV_set(s,v) SvRV(s) = (v)
113	#endif
114
115	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	66	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116	# undef CORO_STACKGUARD	67	# undef CORO_STACKGUARD
117	#endif	68	#endif
118		69
119	#ifndef CORO_STACKGUARD	70	#ifndef CORO_STACKGUARD
…		…
170	# define CORO_CLOCK_THREAD_CPUTIME_ID 3	121	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
171	# endif	122	# endif
172	#endif	123	#endif
173		124
174	static double (*nvtime)(); /* so why doesn't it take void? */	125	static double (*nvtime)(); /* so why doesn't it take void? */
		126	static void (*u2time)(pTHX_ UV ret[2]);
175		127
176	/* we hijack an hopefully unused CV flag for our purposes */	128	/* we hijack an hopefully unused CV flag for our purposes */
177	#define CVf_SLF 0x4000	129	#define CVf_SLF 0x4000
178	static OP *pp_slf (pTHX);	130	static OP *pp_slf (pTHX);
		131	static void slf_destroy (pTHX_ struct coro *coro);
179		132
180	static U32 cctx_gen;	133	static U32 cctx_gen;
181	static size_t cctx_stacksize = CORO_STACKSIZE;	134	static size_t cctx_stacksize = CORO_STACKSIZE;
182	static struct CoroAPI coroapi;	135	static struct CoroAPI coroapi;
183	static AV *main_mainstack; /* used to differentiate between $main and others */	136	static AV *main_mainstack; /* used to differentiate between $main and others */
…		…
200	static SV *sv_pool_size;	153	static SV *sv_pool_size;
201	static SV *sv_async_pool_idle; /* description string */	154	static SV *sv_async_pool_idle; /* description string */
202	static AV *av_async_pool; /* idle pool */	155	static AV *av_async_pool; /* idle pool */
203	static SV *sv_Coro; /* class string */	156	static SV *sv_Coro; /* class string */
204	static CV *cv_pool_handler;	157	static CV *cv_pool_handler;
205	static CV *cv_coro_state_new;
206		158
207	/* Coro::AnyEvent */	159	/* Coro::AnyEvent */
208	static SV *sv_activity;	160	static SV *sv_activity;
209		161
		162	/* enable processtime/realtime profiling */
		163	static char enable_times;
		164	typedef U32 coro_ts[2];
		165	static coro_ts time_real, time_cpu;
		166	static char times_valid;
		167
210	static struct coro_cctx *cctx_first;	168	static struct coro_cctx *cctx_first;
211	static int cctx_count, cctx_idle;	169	static int cctx_count, cctx_idle;
212		170
213	enum {	171	enum
		172	{
214	CC_MAPPED = 0x01,	173	CC_MAPPED = 0x01,
215	CC_NOREUSE = 0x02, /* throw this away after tracing */	174	CC_NOREUSE = 0x02, /* throw this away after tracing */
216	CC_TRACE = 0x04,	175	CC_TRACE = 0x04,
217	CC_TRACE_SUB = 0x08, /* trace sub calls */	176	CC_TRACE_SUB = 0x08, /* trace sub calls */
218	CC_TRACE_LINE = 0x10, /* trace each statement */	177	CC_TRACE_LINE = 0x10, /* trace each statement */
…		…
239	int valgrind_id;	198	int valgrind_id;
240	#endif	199	#endif
241	unsigned char flags;	200	unsigned char flags;
242	} coro_cctx;	201	} coro_cctx;
243		202
244	coro_cctx *cctx_current; /* the currently running cctx */	203	static coro_cctx *cctx_current; /* the currently running cctx */
245		204
246	/*****************************************************************************/	205	/*****************************************************************************/
247		206
		207	static MGVTBL coro_state_vtbl;
		208
248	enum {	209	enum
		210	{
249	CF_RUNNING = 0x0001, /* coroutine is running */	211	CF_RUNNING = 0x0001, /* coroutine is running */
250	CF_READY = 0x0002, /* coroutine is ready */	212	CF_READY = 0x0002, /* coroutine is ready */
251	CF_NEW = 0x0004, /* has never been switched to */	213	CF_NEW = 0x0004, /* has never been switched to */
252	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	214	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
253	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */	215	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
		216	CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
254	};	217	};
255		218
256	/* the structure where most of the perl state is stored, overlaid on the cxstack */	219	/* the structure where most of the perl state is stored, overlaid on the cxstack */
257	typedef struct	220	typedef struct
258	{	221	{
…		…
264	#define VAR(name,type) type name;	227	#define VAR(name,type) type name;
265	# include "state.h"	228	# include "state.h"
266	#undef VAR	229	#undef VAR
267	} perl_slots;	230	} perl_slots;
268		231
		232	// how many context stack entries do we need for perl_slots
269	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	233	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
270		234
271	/* this is a structure representing a perl-level coroutine */	235	/* this is a structure representing a perl-level coroutine */
272	struct coro {	236	struct coro
		237	{
273	/* the C coroutine allocated to this perl coroutine, if any */	238	/* the C coroutine allocated to this perl coroutine, if any */
274	coro_cctx *cctx;	239	coro_cctx *cctx;
275		240
276	/* ready queue */	241	/* ready queue */
277	struct coro *next_ready;	242	struct coro *next_ready;
…		…
279	/* state data */	244	/* state data */
280	struct CoroSLF slf_frame; /* saved slf frame */	245	struct CoroSLF slf_frame; /* saved slf frame */
281	AV *mainstack;	246	AV *mainstack;
282	perl_slots *slot; /* basically the saved sp */	247	perl_slots *slot; /* basically the saved sp */
283		248
284	CV *startcv; /* the CV to execute */	249	CV *startcv; /* the CV to execute */
285	AV *args; /* data associated with this coroutine (initial args) */	250	AV *args; /* data associated with this coroutine (initial args) */
286	int refcnt; /* coroutines are refcounted, yes */
287	int flags; /* CF_ flags */	251	int flags; /* CF_ flags */
288	HV *hv; /* the perl hash associated with this coro, if any */	252	HV *hv; /* the perl hash associated with this coro, if any */
289	void (*on_destroy)(pTHX_ struct coro *coro);
290		253
291	/* statistics */	254	/* statistics */
292	int usecount; /* number of transfers to this coro */	255	int usecount; /* number of transfers to this coro */
293		256
294	/* coro process data */	257	/* coro process data */
295	int prio;	258	int prio;
296	SV *except; /* exception to be thrown */	259	SV *except; /* exception to be thrown */
297	SV *rouse_cb;	260	SV *rouse_cb; /* last rouse callback */
		261	AV *on_destroy; /* callbacks or coros to notify on destroy */
		262	AV *status; /* the exit status list */
298		263
299	/* async_pool */	264	/* async_pool */
300	SV *saved_deffh;	265	SV *saved_deffh;
301	SV *invoke_cb;	266	SV *invoke_cb;
302	AV *invoke_av;	267	AV *invoke_av;
303		268
304	/* on_enter/on_leave */	269	/* on_enter/on_leave */
305	AV *on_enter;	270	AV *on_enter;
306	AV *on_leave;	271	AV *on_leave;
307		272
		273	/* swap_sv */
		274	AV *swap_sv;
		275
		276	/* times */
		277	coro_ts t_cpu, t_real;
		278
308	/* linked list */	279	/* linked list */
309	struct coro *next, *prev;	280	struct coro *next, *prev;
310	};	281	};
311		282
312	typedef struct coro *Coro__State;	283	typedef struct coro *Coro__State;
313	typedef struct coro *Coro__State_or_hashref;	284	typedef struct coro *Coro__State_or_hashref;
314		285
315	/* the following variables are effectively part of the perl context */	286	/* the following variables are effectively part of the perl context */
316	/* and get copied between struct coro and these variables */	287	/* and get copied between struct coro and these variables */
317	/* the mainr easonw e don't support windows process emulation */	288	/* the main reason we don't support windows process emulation */
318	static struct CoroSLF slf_frame; /* the current slf frame */	289	static struct CoroSLF slf_frame; /* the current slf frame */
319		290
320	/** Coro ********************************************************************/	291	/** Coro ********************************************************************/
321		292
322	#define CORO_PRIO_MAX 3	293	#define CORO_PRIO_MAX 3
…		…
328		299
329	/* for Coro.pm */	300	/* for Coro.pm */
330	static SV *coro_current;	301	static SV *coro_current;
331	static SV *coro_readyhook;	302	static SV *coro_readyhook;
332	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */	303	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
333	static CV *cv_coro_run, *cv_coro_terminate;	304	static CV *cv_coro_run;
334	static struct coro *coro_first;	305	static struct coro *coro_first;
335	#define coro_nready coroapi.nready	306	#define coro_nready coroapi.nready
		307
		308	/** Coro::Select ************************************************************/
		309
		310	static OP *(*coro_old_pp_sselect) (pTHX);
		311	static SV *coro_select_select;
		312
		313	/* horrible hack, but if it works... */
		314	static OP *
		315	coro_pp_sselect (pTHX)
		316	{
		317	dSP;
		318	PUSHMARK (SP - 4); /* fake argument list */
		319	XPUSHs (coro_select_select);
		320	PUTBACK;
		321
		322	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		323	PL_op->op_flags |= OPf_STACKED;
		324	PL_op->op_private = 0;
		325	return PL_ppaddr [OP_ENTERSUB](aTHX);
		326	}
		327
		328	/** time stuff **************************************************************/
		329
		330	#ifdef HAS_GETTIMEOFDAY
		331
		332	static void
		333	coro_u2time (pTHX_ UV ret[2])
		334	{
		335	struct timeval tv;
		336	gettimeofday (&tv, 0);
		337
		338	ret [0] = tv.tv_sec;
		339	ret [1] = tv.tv_usec;
		340	}
		341
		342	static double
		343	coro_nvtime ()
		344	{
		345	struct timeval tv;
		346	gettimeofday (&tv, 0);
		347
		348	return tv.tv_sec + tv.tv_usec * 1e-6;
		349	}
		350
		351	static void
		352	time_init (pTHX)
		353	{
		354	nvtime = coro_nvtime;
		355	u2time = coro_u2time;
		356	}
		357
		358	#else
		359
		360	static void
		361	time_init (pTHX)
		362	{
		363	SV **svp;
		364
		365	require_pv ("Time/HiRes.pm");
		366
		367	svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		368
		369	if (!svp) croak ("Time::HiRes is required, but missing. Caught");
		370	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
		371
		372	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		373
		374	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		375	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
		376	}
		377
		378	#endif
336		379
337	/** lowlevel stuff **********************************************************/	380	/** lowlevel stuff **********************************************************/
338		381
339	static SV *	382	static SV *
340	coro_get_sv (pTHX_ const char *name, int create)	383	coro_get_sv (pTHX_ const char *name, int create)
…		…
364	get_hv (name, create);	407	get_hv (name, create);
365	#endif	408	#endif
366	return get_hv (name, create);	409	return get_hv (name, create);
367	}	410	}
368		411
369	/* may croak */	412	INLINE void
370	INLINE CV *	413	coro_times_update ()
371	coro_sv_2cv (pTHX_ SV *sv)
372	{	414	{
373	HV *st;	415	#ifdef coro_clock_gettime
374	GV *gvp;	416	struct timespec ts;
375	CV *cv = sv_2cv (sv, &st, &gvp, 0);
376		417
377	if (!cv)	418	ts.tv_sec = ts.tv_nsec = 0;
378	croak ("code reference expected");	419	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		420	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
379		421
380	return cv;	422	ts.tv_sec = ts.tv_nsec = 0;
		423	coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
		424	time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
		425	#else
		426	dTHX;
		427	UV tv[2];
		428
		429	u2time (aTHX_ tv);
		430	time_real [0] = tv [0];
		431	time_real [1] = tv [1] * 1000;
		432	#endif
		433	}
		434
		435	INLINE void
		436	coro_times_add (struct coro *c)
		437	{
		438	c->t_real [1] += time_real [1];
		439	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
		440	c->t_real [0] += time_real [0];
		441
		442	c->t_cpu [1] += time_cpu [1];
		443	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
		444	c->t_cpu [0] += time_cpu [0];
		445	}
		446
		447	INLINE void
		448	coro_times_sub (struct coro *c)
		449	{
		450	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
		451	c->t_real [1] -= time_real [1];
		452	c->t_real [0] -= time_real [0];
		453
		454	if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
		455	c->t_cpu [1] -= time_cpu [1];
		456	c->t_cpu [0] -= time_cpu [0];
381	}	457	}
382		458
383	/*****************************************************************************/	459	/*****************************************************************************/
384	/* magic glue */	460	/* magic glue */
385		461
…		…
397	: 0)	473	: 0)
398		474
399	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	475	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
400	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)	476	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
401		477
		478	INLINE MAGIC *
		479	SvSTATEhv_p (pTHX_ SV *coro)
		480	{
		481	MAGIC *mg;
		482
		483	if (expect_true (
		484	SvTYPE (coro) == SVt_PVHV
		485	&& (mg = CORO_MAGIC_state (coro))
		486	&& mg->mg_virtual == &coro_state_vtbl
		487	))
		488	return mg;
		489
		490	return 0;
		491	}
		492
402	INLINE struct coro *	493	INLINE struct coro *
403	SvSTATE_ (pTHX_ SV *coro)	494	SvSTATE_ (pTHX_ SV *coro)
404	{	495	{
405	HV *stash;
406	MAGIC *mg;	496	MAGIC *mg;
407		497
408	if (SvROK (coro))	498	if (SvROK (coro))
409	coro = SvRV (coro);	499	coro = SvRV (coro);
410		500
411	if (expect_false (SvTYPE (coro) != SVt_PVHV))	501	mg = SvSTATEhv_p (coro);
		502	if (!mg)
412	croak ("Coro::State object required");	503	croak ("Coro::State object required");
413		504
414	stash = SvSTASH (coro);
415	if (expect_false (stash != coro_stash && stash != coro_state_stash))
416	{
417	/* very slow, but rare, check */
418	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
419	croak ("Coro::State object required");
420	}
421
422	mg = CORO_MAGIC_state (coro);
423	return (struct coro *)mg->mg_ptr;	505	return (struct coro *)mg->mg_ptr;
424	}	506	}
425		507
426	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	508	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
427		509
…		…
488	AV *padlist;	570	AV *padlist;
489	AV *av = (AV *)mg->mg_obj;	571	AV *av = (AV *)mg->mg_obj;
490		572
491	/* perl manages to free our internal AV and _then_ call us */	573	/* perl manages to free our internal AV and _then_ call us */
492	if (IN_DESTRUCT)	574	if (IN_DESTRUCT)
493	return;	575	return 0;
494		576
495	/* casting is fun. */	577	/* casting is fun. */
496	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	578	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
497	free_padlist (aTHX_ padlist);	579	free_padlist (aTHX_ padlist);
498		580
…		…
547	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	629	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
548	}	630	}
549		631
550	/** load & save, init *******************************************************/	632	/** load & save, init *******************************************************/
551		633
		634	/* swap sv heads, at least logically */
		635	static void
		636	swap_svs (pTHX_ Coro__State c)
		637	{
		638	int i;
		639
		640	for (i = 0; i <= AvFILLp (c->swap_sv); )
		641	{
		642	SV *a = AvARRAY (c->swap_sv)[i++];
		643	SV *b = AvARRAY (c->swap_sv)[i++];
		644
		645	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		646	SV tmp;
		647
		648	/* swap sv_any */
		649	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		650
		651	/* swap sv_flags */
		652	SvFLAGS (&tmp) = SvFLAGS (a);
		653	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		654	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		655
		656	#if PERL_VERSION_ATLEAST (5,10,0)
		657	/* perl 5.10 complicates this _quite_ a bit, but it also is
		658	* much faster, so no quarrels here. alternatively, we could
		659	* sv_upgrade to avoid this.
		660	*/
		661	{
		662	/* swap sv_u */
		663	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		664
		665	/* if SvANY points to the head, we need to adjust the pointers,
		666	* as the pointer for a still points to b, and maybe vice versa.
		667	*/
		668	#define svany_in_head(type) \
		669	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
		670
		671	if (svany_in_head (SvTYPE (a)))
		672	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		673
		674	if (svany_in_head (SvTYPE (b)))
		675	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		676	}
		677	#endif
		678	}
		679	}
		680
		681	#define SWAP_SVS(coro) \
		682	if (expect_false ((coro)->swap_sv)) \
		683	swap_svs (aTHX_ (coro))
		684
552	static void	685	static void
553	on_enterleave_call (pTHX_ SV *cb);	686	on_enterleave_call (pTHX_ SV *cb);
554		687
555	static void	688	static void
556	load_perl (pTHX_ Coro__State c)	689	load_perl (pTHX_ Coro__State c)
…		…
587	}	720	}
588		721
589	slf_frame = c->slf_frame;	722	slf_frame = c->slf_frame;
590	CORO_THROW = c->except;	723	CORO_THROW = c->except;
591		724
		725	if (expect_false (enable_times))
		726	{
		727	if (expect_false (!times_valid))
		728	coro_times_update ();
		729
		730	coro_times_sub (c);
		731	}
		732
592	if (expect_false (c->on_enter))	733	if (expect_false (c->on_enter))
593	{	734	{
594	int i;	735	int i;
595		736
596	for (i = 0; i <= AvFILLp (c->on_enter); ++i)	737	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
597	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);	738	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
598	}	739	}
		740
		741	SWAP_SVS (c);
599	}	742	}
600		743
601	static void	744	static void
602	save_perl (pTHX_ Coro__State c)	745	save_perl (pTHX_ Coro__State c)
603	{	746	{
		747	SWAP_SVS (c);
		748
604	if (expect_false (c->on_leave))	749	if (expect_false (c->on_leave))
605	{	750	{
606	int i;	751	int i;
607		752
608	for (i = AvFILLp (c->on_leave); i >= 0; --i)	753	for (i = AvFILLp (c->on_leave); i >= 0; --i)
609	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);	754	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
		755	}
		756
		757	times_valid = 0;
		758
		759	if (expect_false (enable_times))
		760	{
		761	coro_times_update (); times_valid = 1;
		762	coro_times_add (c);
610	}	763	}
611		764
612	c->except = CORO_THROW;	765	c->except = CORO_THROW;
613	c->slf_frame = slf_frame;	766	c->slf_frame = slf_frame;
614		767
…		…
658		811
659	PUTBACK;	812	PUTBACK;
660	}	813	}
661		814
662	/* allocate some space on the context stack for our purposes */	815	/* allocate some space on the context stack for our purposes */
663	/* we manually unroll here, as usually 2 slots is enough */	816	if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
664	if (SLOT_COUNT >= 1) CXINC;
665	if (SLOT_COUNT >= 2) CXINC;
666	if (SLOT_COUNT >= 3) CXINC;
667	{	817	{
668	int i;	818	unsigned int i;
		819
669	for (i = 3; i < SLOT_COUNT; ++i)	820	for (i = 0; i < SLOT_COUNT; ++i)
670	CXINC;	821	CXINC;
671	}	822
672	cxstack_ix -= SLOT_COUNT; /* undo allocation */	823	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		824	}
673		825
674	c->mainstack = PL_mainstack;	826	c->mainstack = PL_mainstack;
675		827
676	{	828	{
677	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	829	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
…		…
698	# define coro_init_stacks(thx) init_stacks ()	850	# define coro_init_stacks(thx) init_stacks ()
699	#else	851	#else
700	static void	852	static void
701	coro_init_stacks (pTHX)	853	coro_init_stacks (pTHX)
702	{	854	{
703	PL_curstackinfo = new_stackinfo(32, 8);	855	PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
704	PL_curstackinfo->si_type = PERLSI_MAIN;	856	PL_curstackinfo->si_type = PERLSI_MAIN;
705	PL_curstack = PL_curstackinfo->si_stack;	857	PL_curstack = PL_curstackinfo->si_stack;
706	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	858	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
707		859
708	PL_stack_base = AvARRAY(PL_curstack);	860	PL_stack_base = AvARRAY(PL_curstack);
…		…
907	slf_check_repeat (pTHX_ struct CoroSLF *frame)	1059	slf_check_repeat (pTHX_ struct CoroSLF *frame)
908	{	1060	{
909	return 1;	1061	return 1;
910	}	1062	}
911		1063
912	static UNOP coro_setup_op;	1064	static UNOP init_perl_op;
913		1065
914	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1066	static void NOINLINE /* noinline to keep it out of the transfer fast path */
915	coro_setup (pTHX_ struct coro *coro)	1067	init_perl (pTHX_ struct coro *coro)
916	{	1068	{
917	/*	1069	/*
918	* emulate part of the perl startup here.	1070	* emulate part of the perl startup here.
919	*/	1071	*/
920	coro_init_stacks (aTHX);	1072	coro_init_stacks (aTHX);
…		…
927	PL_comppad_name_fill = 0;	1079	PL_comppad_name_fill = 0;
928	PL_comppad_name_floor = 0;	1080	PL_comppad_name_floor = 0;
929	PL_curpm = 0;	1081	PL_curpm = 0;
930	PL_curpad = 0;	1082	PL_curpad = 0;
931	PL_localizing = 0;	1083	PL_localizing = 0;
932	PL_dirty = 0;
933	PL_restartop = 0;	1084	PL_restartop = 0;
934	#if PERL_VERSION_ATLEAST (5,10,0)	1085	#if PERL_VERSION_ATLEAST (5,10,0)
935	PL_parser = 0;	1086	PL_parser = 0;
936	#endif	1087	#endif
937	PL_hints = 0;	1088	PL_hints = 0;
…		…
967	/* this newly created coroutine might be run on an existing cctx which most	1118	/* this newly created coroutine might be run on an existing cctx which most
968	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	1119	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
969	*/	1120	*/
970	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1121	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
971	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1122	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		1123	slf_frame.destroy = 0;
972		1124
973	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1125	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
974	coro_setup_op.op_next = PL_op;	1126	init_perl_op.op_next = PL_op;
975	coro_setup_op.op_type = OP_ENTERSUB;	1127	init_perl_op.op_type = OP_ENTERSUB;
976	coro_setup_op.op_ppaddr = pp_slf;	1128	init_perl_op.op_ppaddr = pp_slf;
977	/* no flags etc. required, as an init function won't be called */	1129	/* no flags etc. required, as an init function won't be called */
978		1130
979	PL_op = (OP *)&coro_setup_op;	1131	PL_op = (OP *)&init_perl_op;
980		1132
981	/* copy throw, in case it was set before coro_setup */	1133	/* copy throw, in case it was set before init_perl */
982	CORO_THROW = coro->except;	1134	CORO_THROW = coro->except;
		1135
		1136	SWAP_SVS (coro);
		1137
		1138	if (expect_false (enable_times))
		1139	{
		1140	coro_times_update ();
		1141	coro_times_sub (coro);
		1142	}
983	}	1143	}
984		1144
985	static void	1145	static void
986	coro_unwind_stacks (pTHX)	1146	coro_unwind_stacks (pTHX)
987	{	1147	{
…		…
1002	dounwind (-1);	1162	dounwind (-1);
1003	}	1163	}
1004	}	1164	}
1005		1165
1006	static void	1166	static void
1007	coro_destruct_perl (pTHX_ struct coro *coro)	1167	destroy_perl (pTHX_ struct coro *coro)
1008	{	1168	{
1009	SV *svf [9];	1169	SV *svf [9];
1010		1170
1011	{	1171	{
		1172	SV *old_current = SvRV (coro_current);
1012	struct coro *current = SvSTATE_current;	1173	struct coro *current = SvSTATE (old_current);
1013		1174
1014	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));	1175	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1015		1176
1016	save_perl (aTHX_ current);	1177	save_perl (aTHX_ current);
		1178
		1179	/* this will cause transfer_check to croak on block*/
		1180	SvRV_set (coro_current, (SV *)coro->hv);
		1181
1017	load_perl (aTHX_ coro);	1182	load_perl (aTHX_ coro);
1018		1183
1019	coro_unwind_stacks (aTHX);	1184	coro_unwind_stacks (aTHX);
		1185
		1186	/* restore swapped sv's */
		1187	SWAP_SVS (coro);
		1188
1020	coro_destruct_stacks (aTHX);	1189	coro_destruct_stacks (aTHX);
1021		1190
1022	// now save some sv's to be free'd later	1191	// now save some sv's to be free'd later
1023	svf [0] = GvSV (PL_defgv);	1192	svf [0] = GvSV (PL_defgv);
1024	svf [1] = (SV *)GvAV (PL_defgv);	1193	svf [1] = (SV *)GvAV (PL_defgv);
…		…
1029	svf [6] = (SV *)GvHV (PL_hintgv);	1198	svf [6] = (SV *)GvHV (PL_hintgv);
1030	svf [7] = PL_diehook;	1199	svf [7] = PL_diehook;
1031	svf [8] = PL_warnhook;	1200	svf [8] = PL_warnhook;
1032	assert (9 == sizeof (svf) / sizeof (*svf));	1201	assert (9 == sizeof (svf) / sizeof (*svf));
1033		1202
		1203	SvRV_set (coro_current, old_current);
		1204
1034	load_perl (aTHX_ current);	1205	load_perl (aTHX_ current);
1035	}	1206	}
1036		1207
1037	{	1208	{
1038	int i;	1209	unsigned int i;
1039		1210
1040	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)	1211	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
1041	SvREFCNT_dec (svf [i]);	1212	SvREFCNT_dec (svf [i]);
1042		1213
1043	SvREFCNT_dec (coro->saved_deffh);	1214	SvREFCNT_dec (coro->saved_deffh);
…		…
1050	INLINE void	1221	INLINE void
1051	free_coro_mortal (pTHX)	1222	free_coro_mortal (pTHX)
1052	{	1223	{
1053	if (expect_true (coro_mortal))	1224	if (expect_true (coro_mortal))
1054	{	1225	{
1055	SvREFCNT_dec (coro_mortal);	1226	SvREFCNT_dec ((SV *)coro_mortal);
1056	coro_mortal = 0;	1227	coro_mortal = 0;
1057	}	1228	}
1058	}	1229	}
1059		1230
1060	static int	1231	static int
…		…
1249	/* somebody or something will hit me for both perl_run and PL_restartop */	1420	/* somebody or something will hit me for both perl_run and PL_restartop */
1250	PL_restartop = PL_op;	1421	PL_restartop = PL_op;
1251	perl_run (PL_curinterp);	1422	perl_run (PL_curinterp);
1252	/*	1423	/*
1253	* Unfortunately, there is no way to get at the return values of the	1424	* Unfortunately, there is no way to get at the return values of the
1254	* coro body here, as perl_run destroys these	1425	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1426	* runtime errors here, as this is just a random interpreter, not a thread.
1255	*/	1427	*/
1256		1428
1257	/*	1429	/*
1258	* If perl-run returns we assume exit() was being called or the coro	1430	* If perl-run returns we assume exit() was being called or the coro
1259	* fell off the end, which seems to be the only valid (non-bug)	1431	* fell off the end, which seems to be the only valid (non-bug)
…		…
1346	cctx_destroy (coro_cctx *cctx)	1518	cctx_destroy (coro_cctx *cctx)
1347	{	1519	{
1348	if (!cctx)	1520	if (!cctx)
1349	return;	1521	return;
1350		1522
1351	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?	1523	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1352		1524
1353	--cctx_count;	1525	--cctx_count;
1354	coro_destroy (&cctx->cctx);	1526	coro_destroy (&cctx->cctx);
1355		1527
1356	/* coro_transfer creates new, empty cctx's */	1528	/* coro_transfer creates new, empty cctx's */
…		…
1466	if (expect_false (next->flags & CF_NEW))	1638	if (expect_false (next->flags & CF_NEW))
1467	{	1639	{
1468	/* need to start coroutine */	1640	/* need to start coroutine */
1469	next->flags &= ~CF_NEW;	1641	next->flags &= ~CF_NEW;
1470	/* setup coroutine call */	1642	/* setup coroutine call */
1471	coro_setup (aTHX_ next);	1643	init_perl (aTHX_ next);
1472	}	1644	}
1473	else	1645	else
1474	load_perl (aTHX_ next);	1646	load_perl (aTHX_ next);
1475		1647
1476	/* possibly untie and reuse the cctx */	1648	/* possibly untie and reuse the cctx */
…		…
1515	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1687	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1516	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1688	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1517		1689
1518	/** high level stuff ********************************************************/	1690	/** high level stuff ********************************************************/
1519		1691
		1692	/* this function is actually Coro, not Coro::State, but we call it from here */
		1693	/* because it is convenient - but it hasn't been declared yet for that reason */
1520	static int	1694	static void
		1695	coro_call_on_destroy (pTHX_ struct coro *coro);
		1696
		1697	static void
1521	coro_state_destroy (pTHX_ struct coro *coro)	1698	coro_state_destroy (pTHX_ struct coro *coro)
1522	{	1699	{
1523	if (coro->flags & CF_DESTROYED)	1700	if (coro->flags & CF_DESTROYED)
1524	return 0;	1701	return;
1525		1702
1526	if (coro->on_destroy && !PL_dirty)
1527	coro->on_destroy (aTHX_ coro);	1703	slf_destroy (aTHX_ coro);
1528		1704
1529	coro->flags |= CF_DESTROYED;	1705	coro->flags |= CF_DESTROYED;
1530		1706
1531	if (coro->flags & CF_READY)	1707	if (coro->flags & CF_READY)
1532	{	1708	{
…		…
1534	/* alternative: look through all ready queues and remove the coro */	1710	/* alternative: look through all ready queues and remove the coro */
1535	--coro_nready;	1711	--coro_nready;
1536	}	1712	}
1537	else	1713	else
1538	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1714	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
		1715
		1716	if (coro->next) coro->next->prev = coro->prev;
		1717	if (coro->prev) coro->prev->next = coro->next;
		1718	if (coro == coro_first) coro_first = coro->next;
1539		1719
1540	if (coro->mainstack	1720	if (coro->mainstack
1541	&& coro->mainstack != main_mainstack	1721	&& coro->mainstack != main_mainstack
1542	&& coro->slot	1722	&& coro->slot
1543	&& !PL_dirty)	1723	&& !PL_dirty)
1544	coro_destruct_perl (aTHX_ coro);	1724	destroy_perl (aTHX_ coro);
1545		1725
1546	cctx_destroy (coro->cctx);	1726	cctx_destroy (coro->cctx);
1547	SvREFCNT_dec (coro->startcv);	1727	SvREFCNT_dec (coro->startcv);
1548	SvREFCNT_dec (coro->args);	1728	SvREFCNT_dec (coro->args);
		1729	SvREFCNT_dec (coro->swap_sv);
1549	SvREFCNT_dec (CORO_THROW);	1730	SvREFCNT_dec (CORO_THROW);
1550		1731
1551	if (coro->next) coro->next->prev = coro->prev;	1732	coro_call_on_destroy (coro);
1552	if (coro->prev) coro->prev->next = coro->next;
1553	if (coro == coro_first) coro_first = coro->next;
1554		1733
1555	return 1;	1734	/* more destruction mayhem in coro_state_free */
1556	}	1735	}
1557		1736
1558	static int	1737	static int
1559	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1738	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1560	{	1739	{
1561	struct coro *coro = (struct coro *)mg->mg_ptr;	1740	struct coro *coro = (struct coro *)mg->mg_ptr;
1562	mg->mg_ptr = 0;	1741	mg->mg_ptr = 0;
1563		1742
1564	coro->hv = 0;
1565
1566	if (--coro->refcnt < 0)
1567	{
1568	coro_state_destroy (aTHX_ coro);	1743	coro_state_destroy (coro);
		1744	SvREFCNT_dec (coro->on_destroy);
		1745	SvREFCNT_dec (coro->status);
		1746
1569	Safefree (coro);	1747	Safefree (coro);
1570	}
1571		1748
1572	return 0;	1749	return 0;
1573	}	1750	}
1574		1751
1575	static int	1752	static int
1576	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)	1753	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1577	{	1754	{
1578	struct coro *coro = (struct coro *)mg->mg_ptr;	1755	/* called when perl clones the current process the slow way (windows process emulation) */
1579		1756	/* WE SIMply nuke the pointers in the copy, causing perl to croak */
1580	++coro->refcnt;	1757	mg->mg_ptr = 0;
		1758	mg->mg_virtual = 0;
1581		1759
1582	return 0;	1760	return 0;
1583	}	1761	}
1584		1762
1585	static MGVTBL coro_state_vtbl = {	1763	static MGVTBL coro_state_vtbl = {
…		…
1608		1786
1609	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1787	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1610	TRANSFER (ta, 1);	1788	TRANSFER (ta, 1);
1611	}	1789	}
1612		1790
1613	/*****************************************************************************/
1614	/* gensub: simple closure generation utility */
1615
1616	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1617
1618	/* create a closure from XS, returns a code reference */
1619	/* the arg can be accessed via GENSUB_ARG from the callback */
1620	/* the callback must use dXSARGS/XSRETURN */
1621	static SV *
1622	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1623	{
1624	CV *cv = (CV *)newSV (0);
1625
1626	sv_upgrade ((SV *)cv, SVt_PVCV);
1627
1628	CvANON_on (cv);
1629	CvISXSUB_on (cv);
1630	CvXSUB (cv) = xsub;
1631	GENSUB_ARG = arg;
1632
1633	return newRV_noinc ((SV *)cv);
1634	}
1635
1636	/** Coro ********************************************************************/	1791	/** Coro ********************************************************************/
1637		1792
1638	INLINE void	1793	INLINE void
1639	coro_enq (pTHX_ struct coro *coro)	1794	coro_enq (pTHX_ struct coro *coro)
1640	{	1795	{
…		…
1665	}	1820	}
1666		1821
1667	return 0;	1822	return 0;
1668	}	1823	}
1669		1824
		1825	static void
		1826	invoke_sv_ready_hook_helper (void)
		1827	{
		1828	dTHX;
		1829	dSP;
		1830
		1831	ENTER;
		1832	SAVETMPS;
		1833
		1834	PUSHMARK (SP);
		1835	PUTBACK;
		1836	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1837
		1838	FREETMPS;
		1839	LEAVE;
		1840	}
		1841
1670	static int	1842	static int
1671	api_ready (pTHX_ SV *coro_sv)	1843	api_ready (pTHX_ SV *coro_sv)
1672	{	1844	{
1673	struct coro *coro;
1674	SV *sv_hook;
1675	void (*xs_hook)(void);
1676
1677	coro = SvSTATE (coro_sv);	1845	struct coro *coro = SvSTATE (coro_sv);
1678		1846
1679	if (coro->flags & CF_READY)	1847	if (coro->flags & CF_READY)
1680	return 0;	1848	return 0;
1681		1849
1682	coro->flags |= CF_READY;	1850	coro->flags |= CF_READY;
1683		1851
1684	sv_hook = coro_nready ? 0 : coro_readyhook;
1685	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1686
1687	coro_enq (aTHX_ coro);	1852	coro_enq (aTHX_ coro);
1688	++coro_nready;
1689		1853
1690	if (sv_hook)	1854	if (!coro_nready++)
1691	{	1855	if (coroapi.readyhook)
1692	dSP;	1856	coroapi.readyhook ();
1693
1694	ENTER;
1695	SAVETMPS;
1696
1697	PUSHMARK (SP);
1698	PUTBACK;
1699	call_sv (sv_hook, G_VOID | G_DISCARD);
1700
1701	FREETMPS;
1702	LEAVE;
1703	}
1704
1705	if (xs_hook)
1706	xs_hook ();
1707		1857
1708	return 1;	1858	return 1;
1709	}	1859	}
1710		1860
1711	static int	1861	static int
…		…
1756	{	1906	{
1757	/* nothing to schedule: call the idle handler */	1907	/* nothing to schedule: call the idle handler */
1758	if (SvROK (sv_idle)	1908	if (SvROK (sv_idle)
1759	&& SvOBJECT (SvRV (sv_idle)))	1909	&& SvOBJECT (SvRV (sv_idle)))
1760	{	1910	{
		1911	if (SvRV (sv_idle) == SvRV (coro_current))
		1912	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1913
1761	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	1914	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1762	api_ready (aTHX_ SvRV (sv_idle));	1915	api_ready (aTHX_ SvRV (sv_idle));
1763	--coro_nready;	1916	--coro_nready;
1764	}	1917	}
1765	else	1918	else
1766	{	1919	{
		1920	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1767	dSP;	1921	dSP;
1768		1922
1769	ENTER;	1923	ENTER;
1770	SAVETMPS;	1924	SAVETMPS;
1771		1925
…		…
1878	coro->slot->runops = RUNOPS_DEFAULT;	2032	coro->slot->runops = RUNOPS_DEFAULT;
1879	}	2033	}
1880	}	2034	}
1881		2035
1882	static void	2036	static void
		2037	coro_push_av (pTHX_ AV *av, I32 gimme_v)
		2038	{
		2039	if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
		2040	{
		2041	dSP;
		2042
		2043	if (gimme_v == G_SCALAR)
		2044	XPUSHs (AvARRAY (av)[AvFILLp (av)]);
		2045	else
		2046	{
		2047	int i;
		2048	EXTEND (SP, AvFILLp (av) + 1);
		2049
		2050	for (i = 0; i <= AvFILLp (av); ++i)
		2051	PUSHs (AvARRAY (av)[i]);
		2052	}
		2053
		2054	PUTBACK;
		2055	}
		2056	}
		2057
		2058	static void
		2059	coro_push_on_destroy (aTHX_ struct coro *coro, SV *cb)
		2060	{
		2061	if (!coro->on_destroy)
		2062	coro->on_destroy = newAV ();
		2063
		2064	av_push (coro->on_destroy, cb);
		2065	}
		2066
		2067	static void
		2068	slf_destroy_join (pTHX_ struct CoroSLF *frame)
		2069	{
		2070	SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
		2071	}
		2072
		2073	static int
		2074	slf_check_join (pTHX_ struct CoroSLF *frame)
		2075	{
		2076	struct coro *coro = (struct coro *)frame->data;
		2077
		2078	if (!coro->status)
		2079	return 1;
		2080
		2081	frame->destroy = 0;
		2082
		2083	coro_push_av (coro->status, GIMME_V);
		2084
		2085	SvREFCNT_dec ((SV *)coro->hv);
		2086
		2087	return 0;
		2088	}
		2089
		2090	static void
		2091	slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2092	{
		2093	struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
		2094
		2095	if (items > 1)
		2096	croak ("join called with too many arguments");
		2097
		2098	if (coro->status)
		2099	frame->prepare = prepare_nop;
		2100	else
		2101	{
		2102	coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
		2103	frame->prepare = prepare_schedule;
		2104	}
		2105
		2106	frame->check = slf_check_join;
		2107	frame->destroy = slf_destroy_join;
		2108	frame->data = (void *)coro;
		2109	SvREFCNT_inc (coro->hv);
		2110	}
		2111
		2112	static void
1883	coro_call_on_destroy (pTHX_ struct coro *coro)	2113	coro_call_on_destroy (pTHX_ struct coro *coro)
1884	{	2114	{
1885	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);	2115	AV *od = coro->on_destroy;
1886	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1887		2116
1888	if (on_destroyp)	2117	if (!od)
1889	{	2118	return;
1890	AV *on_destroy = (AV *)SvRV (*on_destroyp);
1891		2119
1892	while (AvFILLp (on_destroy) >= 0)	2120	while (AvFILLp (od) >= 0)
		2121	{
		2122	SV *cb = sv_2mortal (av_pop (od));
		2123
		2124	/* coro hv's (and only hv's at the moment) are supported as well */
		2125	if (SvSTATEhv_p (aTHX_ cb))
		2126	api_ready (aTHX_ cb);
		2127	else
1893	{	2128	{
1894	dSP; /* don't disturb outer sp */	2129	dSP; /* don't disturb outer sp */
1895	SV *cb = av_pop (on_destroy);
1896
1897	PUSHMARK (SP);	2130	PUSHMARK (SP);
1898		2131
1899	if (statusp)	2132	if (coro->status)
1900	{	2133	{
1901	int i;	2134	PUTBACK;
1902	AV *status = (AV *)SvRV (*statusp);	2135	coro_push_av (aTHX_ coro->status, G_ARRAY);
1903	EXTEND (SP, AvFILLp (status) + 1);	2136	SPAGAIN;
1904
1905	for (i = 0; i <= AvFILLp (status); ++i)
1906	PUSHs (AvARRAY (status)[i]);
1907	}	2137	}
1908		2138
1909	PUTBACK;	2139	PUTBACK;
1910	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);	2140	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
1911	}	2141	}
1912	}	2142	}
1913	}	2143	}
1914		2144
1915	static void	2145	static void
1916	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2146	coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1917	{	2147	{
		2148	AV *av;
		2149
		2150	if (coro->status)
		2151	{
		2152	av = coro->status;
		2153	av_clear (av);
		2154	}
		2155	else
		2156	av = coro->status = newAV ();
		2157
		2158	/* items are actually not so common, so optimise for this case */
		2159	if (items)
		2160	{
1918	int i;	2161	int i;
1919	HV *hv = (HV *)SvRV (coro_current);
1920	AV *av = newAV ();
1921		2162
1922	av_extend (av, items - 1);	2163	av_extend (av, items - 1);
		2164
1923	for (i = 0; i < items; ++i)	2165	for (i = 0; i < items; ++i)
1924	av_push (av, SvREFCNT_inc_NN (arg [i]));	2166	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2167	}
		2168	}
1925		2169
1926	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2170	static void
1927		2171	slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
		2172	{
1928	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */	2173	av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
1929	api_ready (aTHX_ sv_manager);	2174	api_ready (aTHX_ sv_manager);
1930		2175
1931	frame->prepare = prepare_schedule;	2176	frame->prepare = prepare_schedule;
1932	frame->check = slf_check_repeat;	2177	frame->check = slf_check_repeat;
1933		2178
1934	/* as a minor optimisation, we could unwind all stacks here */	2179	/* as a minor optimisation, we could unwind all stacks here */
1935	/* but that puts extra pressure on pp_slf, and is not worth much */	2180	/* but that puts extra pressure on pp_slf, and is not worth much */
1936	/*coro_unwind_stacks (aTHX);*/	2181	/*coro_unwind_stacks (aTHX);*/
		2182	}
		2183
		2184	static void
		2185	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2186	{
		2187	HV *coro_hv = (HV *)SvRV (coro_current);
		2188
		2189	coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
		2190	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
		2191	}
		2192
		2193	static void
		2194	slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2195	{
		2196	HV *coro_hv;
		2197	struct coro *coro;
		2198
		2199	if (items <= 0)
		2200	croak ("Coro::cancel called without coro object,");
		2201
		2202	coro = SvSTATE (arg [0]);
		2203	coro_hv = coro->hv;
		2204
		2205	coro_set_status (aTHX_ coro, arg + 1, items - 1);
		2206
		2207	if (expect_false (coro->flags & CF_NOCANCEL))
		2208	{
		2209	/* coro currently busy cancelling something, so just notify it */
		2210	coro->slf_frame.data = (void *)coro;
		2211
		2212	frame->prepare = prepare_nop;
		2213	frame->check = slf_check_nop;
		2214	}
		2215	else if (coro_hv == (HV *)SvRV (coro_current))
		2216	{
		2217	/* cancelling the current coro is allowed, and equals terminate */
		2218	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
		2219	}
		2220	else
		2221	{
		2222	struct coro *self = SvSTATE_current;
		2223
		2224	/* otherwise we cancel directly, purely for speed reasons
		2225	* unfortunately, this requires some magic trickery, as
		2226	* somebody else could cancel us, so we have to fight the cancellation.
		2227	* this is ugly, and hopefully fully worth the extra speed.
		2228	* besides, I can't get the slow-but-safe version working...
		2229	*/
		2230	slf_frame.data = 0;
		2231	self->flags |= CF_NOCANCEL;
		2232	coro_state_destroy (aTHX_ coro);
		2233	self->flags &= ~CF_NOCANCEL;
		2234
		2235	if (slf_frame.data)
		2236	{
		2237	/* while we were busy we have been cancelled, so terminate */
		2238	slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
		2239	}
		2240	else
		2241	{
		2242	frame->prepare = prepare_nop;
		2243	frame->check = slf_check_nop;
		2244	}
		2245	}
		2246	}
		2247
		2248	static int
		2249	slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
		2250	{
		2251	frame->prepare = 0;
		2252	coro_unwind_stacks (aTHX);
		2253
		2254	slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
		2255
		2256	return 1;
		2257	}
		2258
		2259	static int
		2260	safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
		2261	{
		2262	if (coro->cctx)
		2263	croak ("coro inside C callback, unable to cancel at this time, caught");
		2264
		2265	if (coro->flags & CF_NEW)
		2266	{
		2267	coro_set_status (aTHX_ coro, arg, items);
		2268	coro_state_destroy (aTHX_ coro);
		2269	}
		2270	else
		2271	{
		2272	if (!coro->slf_frame.prepare)
		2273	croak ("coro outside an SLF function, unable to cancel at this time, caught");
		2274
		2275	slf_destroy (aTHX_ coro);
		2276
		2277	coro_set_status (aTHX_ coro, arg, items);
		2278	coro->slf_frame.prepare = prepare_nop;
		2279	coro->slf_frame.check = slf_check_safe_cancel;
		2280
		2281	api_ready (aTHX_ (SV *)coro->hv);
		2282	}
		2283
		2284	return 1;
1937	}	2285	}
1938		2286
1939	/*****************************************************************************/	2287	/*****************************************************************************/
1940	/* async pool handler */	2288	/* async pool handler */
1941		2289
…		…
1981	coro->saved_deffh = 0;	2329	coro->saved_deffh = 0;
1982		2330
1983	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)	2331	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1984	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2332	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
1985	{	2333	{
1986	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);	2334	slf_init_terminate_cancel_common (aTHX_ frame, hv);
1987	coro->invoke_av = newAV ();	2335	return;
1988
1989	frame->prepare = prepare_nop;
1990	}	2336	}
1991	else	2337	else
1992	{	2338	{
1993	av_clear (GvAV (PL_defgv));	2339	av_clear (GvAV (PL_defgv));
1994	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);	2340	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
…		…
2019		2365
2020	static void	2366	static void
2021	coro_rouse_callback (pTHX_ CV *cv)	2367	coro_rouse_callback (pTHX_ CV *cv)
2022	{	2368	{
2023	dXSARGS;	2369	dXSARGS;
2024	SV *data = (SV *)GENSUB_ARG;	2370	SV *data = (SV *)S_GENSUB_ARG;
2025		2371
2026	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2372	if (SvTYPE (SvRV (data)) != SVt_PVAV)
2027	{	2373	{
2028	/* first call, set args */	2374	/* first call, set args */
2029	SV *coro = SvRV (data);	2375	SV *coro = SvRV (data);
…		…
2095	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2441	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2096	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2442	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2097	croak ("Coro::rouse_wait called with illegal callback argument,");	2443	croak ("Coro::rouse_wait called with illegal callback argument,");
2098		2444
2099	{	2445	{
2100	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2446	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2101	SV *data = (SV *)GENSUB_ARG;	2447	SV *data = (SV *)S_GENSUB_ARG;
2102		2448
2103	frame->data = (void *)data;	2449	frame->data = (void *)data;
2104	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2450	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2105	frame->check = slf_check_rouse_wait;	2451	frame->check = slf_check_rouse_wait;
2106	}	2452	}
…		…
2110	coro_new_rouse_cb (pTHX)	2456	coro_new_rouse_cb (pTHX)
2111	{	2457	{
2112	HV *hv = (HV *)SvRV (coro_current);	2458	HV *hv = (HV *)SvRV (coro_current);
2113	struct coro *coro = SvSTATE_hv (hv);	2459	struct coro *coro = SvSTATE_hv (hv);
2114	SV *data = newRV_inc ((SV *)hv);	2460	SV *data = newRV_inc ((SV *)hv);
2115	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2461	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2116		2462
2117	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2463	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2118	SvREFCNT_dec (data); /* magicext increases the refcount */	2464	SvREFCNT_dec (data); /* magicext increases the refcount */
2119		2465
2120	SvREFCNT_dec (coro->rouse_cb);	2466	SvREFCNT_dec (coro->rouse_cb);
…		…
2217	static void	2563	static void
2218	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2564	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2219	{	2565	{
2220	frame->prepare = prepare_cede_notself;	2566	frame->prepare = prepare_cede_notself;
2221	frame->check = slf_check_nop;	2567	frame->check = slf_check_nop;
		2568	}
		2569
		2570	/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
		2571	static void
		2572	slf_destroy (pTHX_ struct coro *coro)
		2573	{
		2574	/* this callback is reserved for slf functions needing to do cleanup */
		2575	if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
		2576	coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
		2577
		2578	/*
		2579	* The on_destroy above most likely is from an SLF call.
		2580	* Since by definition the SLF call will not finish when we destroy
		2581	* the coro, we will have to force-finish it here, otherwise
		2582	* cleanup functions cannot call SLF functions.
		2583	*/
		2584	coro->slf_frame.prepare = 0;
2222	}	2585	}
2223		2586
2224	/*	2587	/*
2225	* these not obviously related functions are all rolled into one	2588	* these not obviously related functions are all rolled into one
2226	* function to increase chances that they all will call transfer with the same	2589	* function to increase chances that they all will call transfer with the same
…		…
2295	croak (0);	2658	croak (0);
2296	}	2659	}
2297		2660
2298	/* return value handling - mostly like entersub */	2661	/* return value handling - mostly like entersub */
2299	/* make sure we put something on the stack in scalar context */	2662	/* make sure we put something on the stack in scalar context */
2300	if (GIMME_V == G_SCALAR)	2663	if (GIMME_V == G_SCALAR
		2664	&& expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2301	{	2665	{
2302	dSP;	2666	dSP;
2303	SV **bot = PL_stack_base + checkmark;	2667	SV **bot = PL_stack_base + checkmark;
2304		2668
2305	if (sp == bot) /* too few, push undef */	2669	if (sp == bot) /* too few, push undef */
2306	bot [1] = &PL_sv_undef;	2670	bot [1] = &PL_sv_undef;
2307	else if (sp != bot + 1) /* too many, take last one */	2671	else /* too many, take last one */
2308	bot [1] = *sp;	2672	bot [1] = *sp;
2309		2673
2310	SP = bot + 1;	2674	SP = bot + 1;
2311		2675
2312	PUTBACK;	2676	PUTBACK;
…		…
2345	if (PL_op->op_flags & OPf_STACKED)	2709	if (PL_op->op_flags & OPf_STACKED)
2346	{	2710	{
2347	if (items > slf_arga)	2711	if (items > slf_arga)
2348	{	2712	{
2349	slf_arga = items;	2713	slf_arga = items;
2350	free (slf_argv);	2714	Safefree (slf_argv);
2351	slf_argv = malloc (slf_arga * sizeof (SV *));	2715	New (0, slf_argv, slf_arga, SV *);
2352	}	2716	}
2353		2717
2354	slf_argc = items;	2718	slf_argc = items;
2355		2719
2356	for (i = 0; i < items; ++i)	2720	for (i = 0; i < items; ++i)
…		…
2552	SvREFCNT_dec (cb);	2916	SvREFCNT_dec (cb);
2553	}	2917	}
2554	}	2918	}
2555		2919
2556	static void	2920	static void
2557	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2921	coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2558	{	2922	{
2559	/* call $sem->adjust (0) to possibly wake up some other waiters */	2923	/* call $sem->adjust (0) to possibly wake up some other waiters */
2560	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2924	coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2561	}	2925	}
2562		2926
2563	static int	2927	static int
2564	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)	2928	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2565	{	2929	{
2566	AV *av = (AV *)frame->data;	2930	AV *av = (AV *)frame->data;
2567	SV *count_sv = AvARRAY (av)[0];	2931	SV *count_sv = AvARRAY (av)[0];
		2932	SV *coro_hv = SvRV (coro_current);
2568		2933
2569	/* if we are about to throw, don't actually acquire the lock, just throw */	2934	/* if we are about to throw, don't actually acquire the lock, just throw */
2570	if (CORO_THROW)	2935	if (CORO_THROW)
2571	return 0;	2936	return 0;
2572	else if (SvIVX (count_sv) > 0)	2937	else if (SvIVX (count_sv) > 0)
2573	{	2938	{
2574	SvSTATE_current->on_destroy = 0;	2939	frame->destroy = 0;
2575		2940
2576	if (acquire)	2941	if (acquire)
2577	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2942	SvIVX (count_sv) = SvIVX (count_sv) - 1;
2578	else	2943	else
2579	coro_semaphore_adjust (aTHX_ av, 0);	2944	coro_semaphore_adjust (aTHX_ av, 0);
…		…
2584	{	2949	{
2585	int i;	2950	int i;
2586	/* if we were woken up but can't down, we look through the whole */	2951	/* if we were woken up but can't down, we look through the whole */
2587	/* waiters list and only add us if we aren't in there already */	2952	/* waiters list and only add us if we aren't in there already */
2588	/* this avoids some degenerate memory usage cases */	2953	/* this avoids some degenerate memory usage cases */
2589		2954	for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2590	for (i = 1; i <= AvFILLp (av); ++i)
2591	if (AvARRAY (av)[i] == SvRV (coro_current))	2955	if (AvARRAY (av)[i] == coro_hv)
2592	return 1;	2956	return 1;
2593		2957
2594	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2958	av_push (av, SvREFCNT_inc (coro_hv));
2595	return 1;	2959	return 1;
2596	}	2960	}
2597	}	2961	}
2598		2962
2599	static int	2963	static int
…		…
2622	{	2986	{
2623	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2987	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2624		2988
2625	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));	2989	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2626	frame->prepare = prepare_schedule;	2990	frame->prepare = prepare_schedule;
2627
2628	/* to avoid race conditions when a woken-up coro gets terminated */	2991	/* to avoid race conditions when a woken-up coro gets terminated */
2629	/* we arrange for a temporary on_destroy that calls adjust (0) */	2992	/* we arrange for a temporary on_destroy that calls adjust (0) */
2630	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2993	frame->destroy = coro_semaphore_destroy;
2631	}	2994	}
2632	}	2995	}
2633		2996
2634	static void	2997	static void
2635	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2998	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
…		…
2643	{	3006	{
2644	if (items >= 2)	3007	if (items >= 2)
2645	{	3008	{
2646	/* callback form */	3009	/* callback form */
2647	AV *av = (AV *)SvRV (arg [0]);	3010	AV *av = (AV *)SvRV (arg [0]);
2648	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	3011	SV *cb_cv = s_get_cv_croak (arg [1]);
2649		3012
2650	av_push (av, SvREFCNT_inc_NN (cb_cv));	3013	av_push (av, SvREFCNT_inc_NN (cb_cv));
2651		3014
2652	if (SvIVX (AvARRAY (av)[0]) > 0)	3015	if (SvIVX (AvARRAY (av)[0]) > 0)
2653	coro_semaphore_adjust (aTHX_ av, 0);	3016	coro_semaphore_adjust (aTHX_ av, 0);
…		…
2713	{	3076	{
2714	AV *av = (AV *)SvRV (arg [0]);	3077	AV *av = (AV *)SvRV (arg [0]);
2715		3078
2716	if (items >= 2)	3079	if (items >= 2)
2717	{	3080	{
2718	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	3081	SV *cb_cv = s_get_cv_croak (arg [1]);
2719	av_push (av, SvREFCNT_inc_NN (cb_cv));	3082	av_push (av, SvREFCNT_inc_NN (cb_cv));
2720		3083
2721	if (SvIVX (AvARRAY (av)[0]))	3084	if (SvIVX (AvARRAY (av)[0]))
2722	coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */	3085	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2723		3086
2724	frame->prepare = prepare_nop;	3087	frame->prepare = prepare_nop;
2725	frame->check = slf_check_nop;	3088	frame->check = slf_check_nop;
2726	}	3089	}
2727	else if (SvIVX (AvARRAY (av)[0]))	3090	else if (SvIVX (AvARRAY (av)[0]))
…		…
2758		3121
2759	static void	3122	static void
2760	coro_aio_callback (pTHX_ CV *cv)	3123	coro_aio_callback (pTHX_ CV *cv)
2761	{	3124	{
2762	dXSARGS;	3125	dXSARGS;
2763	AV *state = (AV *)GENSUB_ARG;	3126	AV *state = (AV *)S_GENSUB_ARG;
2764	SV *coro = av_pop (state);	3127	SV *coro = av_pop (state);
2765	SV *data_sv = newSV (sizeof (struct io_state));	3128	SV *data_sv = newSV (sizeof (struct io_state));
2766		3129
2767	av_extend (state, items - 1);	3130	av_extend (state, items - 1);
2768		3131
…		…
2882		3245
2883	for (i = 0; i < items; ++i)	3246	for (i = 0; i < items; ++i)
2884	PUSHs (arg [i]);	3247	PUSHs (arg [i]);
2885		3248
2886	/* now push the callback closure */	3249	/* now push the callback closure */
2887	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	3250	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2888		3251
2889	/* now call the AIO function - we assume our request is uncancelable */	3252	/* now call the AIO function - we assume our request is uncancelable */
2890	PUTBACK;	3253	PUTBACK;
2891	call_sv ((SV *)req, G_VOID | G_DISCARD);	3254	call_sv ((SV *)req, G_VOID | G_DISCARD);
2892	}	3255	}
2893		3256
2894	/* now that the requets is going, we loop toll we have a result */	3257	/* now that the request is going, we loop till we have a result */
2895	frame->data = (void *)state;	3258	frame->data = (void *)state;
2896	frame->prepare = prepare_schedule;	3259	frame->prepare = prepare_schedule;
2897	frame->check = slf_check_aio_req;	3260	frame->check = slf_check_aio_req;
2898	}	3261	}
2899		3262
…		…
2910	/*****************************************************************************/	3273	/*****************************************************************************/
2911		3274
2912	#if CORO_CLONE	3275	#if CORO_CLONE
2913	# include "clone.c"	3276	# include "clone.c"
2914	#endif	3277	#endif
		3278
		3279	/*****************************************************************************/
		3280
		3281	static SV *
		3282	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		3283	{
		3284	SV *coro_sv;
		3285	struct coro *coro;
		3286	MAGIC *mg;
		3287	HV *hv;
		3288	SV *cb;
		3289	int i;
		3290
		3291	if (argc > 0)
		3292	{
		3293	cb = s_get_cv_croak (argv [0]);
		3294
		3295	if (!is_coro)
		3296	{
		3297	if (CvISXSUB (cb))
		3298	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3299
		3300	if (!CvROOT (cb))
		3301	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3302	}
		3303	}
		3304
		3305	Newz (0, coro, 1, struct coro);
		3306	coro->args = newAV ();
		3307	coro->flags = CF_NEW;
		3308
		3309	if (coro_first) coro_first->prev = coro;
		3310	coro->next = coro_first;
		3311	coro_first = coro;
		3312
		3313	coro->hv = hv = newHV ();
		3314	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3315	mg->mg_flags |= MGf_DUP;
		3316	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3317
		3318	if (argc > 0)
		3319	{
		3320	av_extend (coro->args, argc + is_coro - 1);
		3321
		3322	if (is_coro)
		3323	{
		3324	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3325	cb = (SV *)cv_coro_run;
		3326	}
		3327
		3328	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3329
		3330	for (i = 1; i < argc; i++)
		3331	av_push (coro->args, newSVsv (argv [i]));
		3332	}
		3333
		3334	return coro_sv;
		3335	}
2915		3336
2916	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3337	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2917		3338
2918	PROTOTYPES: DISABLE	3339	PROTOTYPES: DISABLE
2919		3340
…		…
2972	coroapi.prepare_nop = prepare_nop;	3393	coroapi.prepare_nop = prepare_nop;
2973	coroapi.prepare_schedule = prepare_schedule;	3394	coroapi.prepare_schedule = prepare_schedule;
2974	coroapi.prepare_cede = prepare_cede;	3395	coroapi.prepare_cede = prepare_cede;
2975	coroapi.prepare_cede_notself = prepare_cede_notself;	3396	coroapi.prepare_cede_notself = prepare_cede_notself;
2976		3397
2977	{	3398	time_init (aTHX);
2978	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
2979
2980	if (!svp) croak ("Time::HiRes is required");
2981	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2982
2983	nvtime = INT2PTR (double (*)(), SvIV (*svp));
2984	}
2985		3399
2986	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));	3400	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2987	}	3401	}
2988		3402
2989	SV *	3403	SV *
2990	new (char *klass, ...)	3404	new (SV *klass, ...)
2991	ALIAS:	3405	ALIAS:
2992	Coro::new = 1	3406	Coro::new = 1
2993	CODE:	3407	CODE:
2994	{	3408	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2995	struct coro *coro;	3409	OUTPUT:
2996	MAGIC *mg;
2997	HV *hv;
2998	CV *cb;
2999	int i;
3000
3001	if (items > 1)
3002	{
3003	cb = coro_sv_2cv (aTHX_ ST (1));
3004
3005	if (!ix)
3006	{
3007	if (CvISXSUB (cb))
3008	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3009
3010	if (!CvROOT (cb))
3011	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3012	}
3013	}
3014
3015	Newz (0, coro, 1, struct coro);
3016	coro->args = newAV ();
3017	coro->flags = CF_NEW;
3018
3019	if (coro_first) coro_first->prev = coro;
3020	coro->next = coro_first;
3021	coro_first = coro;
3022
3023	coro->hv = hv = newHV ();
3024	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3025	mg->mg_flags |= MGf_DUP;
3026	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
3027
3028	if (items > 1)
3029	{
3030	av_extend (coro->args, items - 1 + ix - 1);
3031
3032	if (ix)
3033	{
3034	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3035	cb = cv_coro_run;
3036	}
3037
3038	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3039
3040	for (i = 2; i < items; i++)
3041	av_push (coro->args, newSVsv (ST (i)));
3042	}
3043	}
3044	OUTPUT:
3045	RETVAL	3410	RETVAL
3046		3411
3047	void	3412	void
3048	transfer (...)	3413	transfer (...)
3049	PROTOTYPE: $$	3414	PROTOTYPE: $$
3050	CODE:	3415	CODE:
3051	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3416	CORO_EXECUTE_SLF_XS (slf_init_transfer);
3052
3053	bool
3054	_destroy (SV *coro_sv)
3055	CODE:
3056	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3057	OUTPUT:
3058	RETVAL
3059		3417
3060	void	3418	void
3061	_exit (int code)	3419	_exit (int code)
3062	PROTOTYPE: $	3420	PROTOTYPE: $
3063	CODE:	3421	CODE:
…		…
3139	CODE:	3497	CODE:
3140	{	3498	{
3141	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3499	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3142	{	3500	{
3143	struct coro *current = SvSTATE_current;	3501	struct coro *current = SvSTATE_current;
		3502	struct CoroSLF slf_save;
3144		3503
3145	if (current != coro)	3504	if (current != coro)
3146	{	3505	{
3147	PUTBACK;	3506	PUTBACK;
3148	save_perl (aTHX_ current);	3507	save_perl (aTHX_ current);
3149	load_perl (aTHX_ coro);	3508	load_perl (aTHX_ coro);
		3509	/* the coro is most likely in an active SLF call.
		3510	* while not strictly required (the code we execute is
		3511	* not allowed to call any SLF functions), it's cleaner
		3512	* to reinitialise the slf_frame and restore it later.
		3513	* This might one day allow us to actually do SLF calls
		3514	* from code executed here.
		3515	*/
		3516	slf_save = slf_frame;
		3517	slf_frame.prepare = 0;
3150	SPAGAIN;	3518	SPAGAIN;
3151	}	3519	}
3152		3520
3153	PUSHSTACK;	3521	PUSHSTACK;
3154		3522
…		…
3164	SPAGAIN;	3532	SPAGAIN;
3165		3533
3166	if (current != coro)	3534	if (current != coro)
3167	{	3535	{
3168	PUTBACK;	3536	PUTBACK;
		3537	slf_frame = slf_save;
3169	save_perl (aTHX_ coro);	3538	save_perl (aTHX_ coro);
3170	load_perl (aTHX_ current);	3539	load_perl (aTHX_ current);
3171	SPAGAIN;	3540	SPAGAIN;
3172	}	3541	}
3173	}	3542	}
…		…
3186	RETVAL = boolSV (coro->flags & ix);	3555	RETVAL = boolSV (coro->flags & ix);
3187	OUTPUT:	3556	OUTPUT:
3188	RETVAL	3557	RETVAL
3189		3558
3190	void	3559	void
3191	throw (Coro::State self, SV *throw = &PL_sv_undef)	3560	throw (Coro::State self, SV *exception = &PL_sv_undef)
3192	PROTOTYPE: $;$	3561	PROTOTYPE: $;$
3193	CODE:	3562	CODE:
3194	{	3563	{
3195	struct coro *current = SvSTATE_current;	3564	struct coro *current = SvSTATE_current;
3196	SV **throwp = self == current ? &CORO_THROW : &self->except;	3565	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3197	SvREFCNT_dec (*throwp);	3566	SvREFCNT_dec (*exceptionp);
3198	SvGETMAGIC (throw);	3567	SvGETMAGIC (exception);
3199	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3568	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3200	}	3569	}
3201		3570
3202	void	3571	void
3203	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3572	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3204	PROTOTYPE: $;$	3573	PROTOTYPE: $;$
…		…
3259		3628
3260	void	3629	void
3261	cancel (Coro::State self)	3630	cancel (Coro::State self)
3262	CODE:	3631	CODE:
3263	coro_state_destroy (aTHX_ self);	3632	coro_state_destroy (aTHX_ self);
3264	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */	3633
		3634	SV *
		3635	enable_times (int enabled = enable_times)
		3636	CODE:
		3637	{
		3638	RETVAL = boolSV (enable_times);
		3639
		3640	if (enabled != enable_times)
		3641	{
		3642	enable_times = enabled;
		3643
		3644	coro_times_update ();
		3645	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3646	}
		3647	}
		3648	OUTPUT:
		3649	RETVAL
		3650
		3651	void
		3652	times (Coro::State self)
		3653	PPCODE:
		3654	{
		3655	struct coro *current = SvSTATE (coro_current);
		3656
		3657	if (expect_false (current == self))
		3658	{
		3659	coro_times_update ();
		3660	coro_times_add (SvSTATE (coro_current));
		3661	}
		3662
		3663	EXTEND (SP, 2);
		3664	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3665	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3666
		3667	if (expect_false (current == self))
		3668	coro_times_sub (SvSTATE (coro_current));
		3669	}
		3670
		3671	void
		3672	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3673	CODE:
		3674	{
		3675	struct coro *current = SvSTATE_current;
		3676
		3677	if (current == coro)
		3678	SWAP_SVS (current);
		3679
		3680	if (!coro->swap_sv)
		3681	coro->swap_sv = newAV ();
		3682
		3683	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3684	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3685
		3686	if (current == coro)
		3687	SWAP_SVS (current);
		3688	}
3265		3689
3266		3690
3267	MODULE = Coro::State PACKAGE = Coro	3691	MODULE = Coro::State PACKAGE = Coro
3268		3692
3269	BOOT:	3693	BOOT:
3270	{	3694	{
3271	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3695	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3272	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3696	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3273	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);	3697	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3274	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3275	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3698	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3276	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	3699	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3277	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);	3700	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3278	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);	3701	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3279	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3702	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3280		3703
3281	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3704	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3282	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3705	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3283	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3706	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3284	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3707	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3285		3708
3286	coro_stash = gv_stashpv ("Coro", TRUE);	3709	coro_stash = gv_stashpv ("Coro", TRUE);
3287		3710
3288	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));	3711	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3289	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));	3712	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3290	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));	3713	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
…		…
3308	sv_setiv (sv, (IV)&coroapi);	3731	sv_setiv (sv, (IV)&coroapi);
3309	SvREADONLY_on (sv);	3732	SvREADONLY_on (sv);
3310	}	3733	}
3311	}	3734	}
3312		3735
		3736	SV *
		3737	async (...)
		3738	PROTOTYPE: &@
		3739	CODE:
		3740	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3741	api_ready (aTHX_ RETVAL);
		3742	OUTPUT:
		3743	RETVAL
		3744
		3745	void
		3746	_destroy (Coro::State coro)
		3747	CODE:
		3748	/* used by the manager thread */
		3749	coro_state_destroy (aTHX_ coro);
		3750
		3751	void
		3752	on_destroy (Coro::State coro, SV *cb)
		3753	CODE:
		3754	coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
		3755
		3756	void
		3757	join (...)
		3758	CODE:
		3759	CORO_EXECUTE_SLF_XS (slf_init_join);
		3760
3313	void	3761	void
3314	terminate (...)	3762	terminate (...)
3315	CODE:	3763	CODE:
3316	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3764	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3765
		3766	void
		3767	cancel (...)
		3768	CODE:
		3769	CORO_EXECUTE_SLF_XS (slf_init_cancel);
		3770
		3771	int
		3772	safe_cancel (Coro::State self, ...)
		3773	C_ARGS: aTHX_ self, &ST (1), items - 1
3317		3774
3318	void	3775	void
3319	schedule (...)	3776	schedule (...)
3320	CODE:	3777	CODE:
3321	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3778	CORO_EXECUTE_SLF_XS (slf_init_schedule);
…		…
3351	_set_readyhook (SV *hook)	3808	_set_readyhook (SV *hook)
3352	PROTOTYPE: $	3809	PROTOTYPE: $
3353	CODE:	3810	CODE:
3354	SvREFCNT_dec (coro_readyhook);	3811	SvREFCNT_dec (coro_readyhook);
3355	SvGETMAGIC (hook);	3812	SvGETMAGIC (hook);
		3813	if (SvOK (hook))
		3814	{
3356	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3815	coro_readyhook = newSVsv (hook);
		3816	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3817	}
		3818	else
		3819	{
		3820	coro_readyhook = 0;
		3821	CORO_READYHOOK = 0;
		3822	}
3357		3823
3358	int	3824	int
3359	prio (Coro::State coro, int newprio = 0)	3825	prio (Coro::State coro, int newprio = 0)
3360	PROTOTYPE: $;$	3826	PROTOTYPE: $;$
3361	ALIAS:	3827	ALIAS:
…		…
3367	if (items > 1)	3833	if (items > 1)
3368	{	3834	{
3369	if (ix)	3835	if (ix)
3370	newprio = coro->prio - newprio;	3836	newprio = coro->prio - newprio;
3371		3837
3372	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3838	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3373	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3839	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3374		3840
3375	coro->prio = newprio;	3841	coro->prio = newprio;
3376	}	3842	}
3377	}	3843	}
3378	OUTPUT:	3844	OUTPUT:
…		…
3425	for (i = 1; i < items; ++i)	3891	for (i = 1; i < items; ++i)
3426	av_push (av, SvREFCNT_inc_NN (ST (i)));	3892	av_push (av, SvREFCNT_inc_NN (ST (i)));
3427		3893
3428	if ((SV *)hv == &PL_sv_undef)	3894	if ((SV *)hv == &PL_sv_undef)
3429	{	3895	{
3430	PUSHMARK (SP);	3896	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3431	EXTEND (SP, 2);
3432	PUSHs (sv_Coro);
3433	PUSHs ((SV *)cv_pool_handler);
3434	PUTBACK;
3435	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3436	SPAGAIN;
3437
3438	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3897	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3898	SvREFCNT_dec (sv);
3439	}	3899	}
3440		3900
3441	{	3901	{
3442	struct coro *coro = SvSTATE_hv (hv);	3902	struct coro *coro = SvSTATE_hv (hv);
3443		3903
…		…
3477	CODE:	3937	CODE:
3478	{	3938	{
3479	struct coro *coro = SvSTATE_current;	3939	struct coro *coro = SvSTATE_current;
3480	AV **avp = ix ? &coro->on_leave : &coro->on_enter;	3940	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3481		3941
3482	block = (SV *)coro_sv_2cv (aTHX_ block);	3942	block = s_get_cv_croak (block);
3483		3943
3484	if (!*avp)	3944	if (!*avp)
3485	*avp = newAV ();	3945	*avp = newAV ();
3486		3946
3487	av_push (*avp, SvREFCNT_inc (block));	3947	av_push (*avp, SvREFCNT_inc (block));
…		…
3687		4147
3688	void	4148	void
3689	_register (char *target, char *proto, SV *req)	4149	_register (char *target, char *proto, SV *req)
3690	CODE:	4150	CODE:
3691	{	4151	{
3692	CV *req_cv = coro_sv_2cv (aTHX_ req);	4152	SV *req_cv = s_get_cv_croak (req);
3693	/* newXSproto doesn't return the CV on 5.8 */	4153	/* newXSproto doesn't return the CV on 5.8 */
3694	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	4154	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3695	sv_setpv ((SV *)slf_cv, proto);	4155	sv_setpv ((SV *)slf_cv, proto);
3696	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	4156	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3697	}	4157	}
3698		4158
		4159	MODULE = Coro::State PACKAGE = Coro::Select
		4160
		4161	void
		4162	patch_pp_sselect ()
		4163	CODE:
		4164	if (!coro_old_pp_sselect)
		4165	{
		4166	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		4167	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		4168	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		4169	}
		4170
		4171	void
		4172	unpatch_pp_sselect ()
		4173	CODE:
		4174	if (coro_old_pp_sselect)
		4175	{
		4176	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		4177	coro_old_pp_sselect = 0;
		4178	}
		4179

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