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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.362 by root, Wed Jul 1 07:58:45 2009 UTC vs.
Revision 1.403 by root, Sun May 22 20:13:33 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
		18	#include <stddef.h>
13	#include <stdio.h>	19	#include <stdio.h>
14	#include <errno.h>	20	#include <errno.h>
15	#include <assert.h>	21	#include <assert.h>
16		22
17	#ifdef WIN32	23	#ifndef SVs_PADSTALE
		24	# define SVs_PADSTALE 0
		25	#endif
		26
		27	#if defined(_WIN32)
		28	# undef HAS_GETTIMEOFDAY
18	# undef setjmp	29	# undef setjmp
19	# undef longjmp	30	# undef longjmp
20	# undef _exit	31	# undef _exit
21	# define setjmp _setjmp /* deep magic */	32	# define setjmp _setjmp /* deep magic */
22	#else	33	#else
…		…
51	#endif	62	#endif
52		63
53	/* the maximum number of idle cctx that will be pooled */	64	/* the maximum number of idle cctx that will be pooled */
54	static int cctx_max_idle = 4;	65	static int cctx_max_idle = 4;
55		66
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	67	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116	# undef CORO_STACKGUARD	68	# undef CORO_STACKGUARD
117	#endif	69	#endif
118		70
119	#ifndef CORO_STACKGUARD	71	#ifndef CORO_STACKGUARD
…		…
175	static void (*u2time)(pTHX_ UV ret[2]);	127	static void (*u2time)(pTHX_ UV ret[2]);
176		128
177	/* we hijack an hopefully unused CV flag for our purposes */	129	/* we hijack an hopefully unused CV flag for our purposes */
178	#define CVf_SLF 0x4000	130	#define CVf_SLF 0x4000
179	static OP *pp_slf (pTHX);	131	static OP *pp_slf (pTHX);
		132	static void slf_destroy (pTHX_ struct coro *coro);
180		133
181	static U32 cctx_gen;	134	static U32 cctx_gen;
182	static size_t cctx_stacksize = CORO_STACKSIZE;	135	static size_t cctx_stacksize = CORO_STACKSIZE;
183	static struct CoroAPI coroapi;	136	static struct CoroAPI coroapi;
184	static AV *main_mainstack; /* used to differentiate between $main and others */	137	static AV *main_mainstack; /* used to differentiate between $main and others */
…		…
201	static SV *sv_pool_size;	154	static SV *sv_pool_size;
202	static SV *sv_async_pool_idle; /* description string */	155	static SV *sv_async_pool_idle; /* description string */
203	static AV *av_async_pool; /* idle pool */	156	static AV *av_async_pool; /* idle pool */
204	static SV *sv_Coro; /* class string */	157	static SV *sv_Coro; /* class string */
205	static CV *cv_pool_handler;	158	static CV *cv_pool_handler;
206	static CV *cv_coro_state_new;
207		159
208	/* Coro::AnyEvent */	160	/* Coro::AnyEvent */
209	static SV *sv_activity;	161	static SV *sv_activity;
210		162
211	/* enable processtime/realtime profiling */	163	/* enable processtime/realtime profiling */
…		…
215	static char times_valid;	167	static char times_valid;
216		168
217	static struct coro_cctx *cctx_first;	169	static struct coro_cctx *cctx_first;
218	static int cctx_count, cctx_idle;	170	static int cctx_count, cctx_idle;
219		171
220	enum {	172	enum
		173	{
221	CC_MAPPED = 0x01,	174	CC_MAPPED = 0x01,
222	CC_NOREUSE = 0x02, /* throw this away after tracing */	175	CC_NOREUSE = 0x02, /* throw this away after tracing */
223	CC_TRACE = 0x04,	176	CC_TRACE = 0x04,
224	CC_TRACE_SUB = 0x08, /* trace sub calls */	177	CC_TRACE_SUB = 0x08, /* trace sub calls */
225	CC_TRACE_LINE = 0x10, /* trace each statement */	178	CC_TRACE_LINE = 0x10, /* trace each statement */
…		…
246	int valgrind_id;	199	int valgrind_id;
247	#endif	200	#endif
248	unsigned char flags;	201	unsigned char flags;
249	} coro_cctx;	202	} coro_cctx;
250		203
251	coro_cctx *cctx_current; /* the currently running cctx */	204	static coro_cctx *cctx_current; /* the currently running cctx */
252		205
253	/*****************************************************************************/	206	/*****************************************************************************/
254		207
		208	static MGVTBL coro_state_vtbl;
		209
255	enum {	210	enum
		211	{
256	CF_RUNNING = 0x0001, /* coroutine is running */	212	CF_RUNNING = 0x0001, /* coroutine is running */
257	CF_READY = 0x0002, /* coroutine is ready */	213	CF_READY = 0x0002, /* coroutine is ready */
258	CF_NEW = 0x0004, /* has never been switched to */	214	CF_NEW = 0x0004, /* has never been switched to */
259	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	215	CF_ZOMBIE = 0x0008, /* coroutine data has been freed */
260	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */	216	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
		217	CF_NOCANCEL = 0x0020, /* cannot cancel, set slf_frame.data to 1 (hackish) */
261	};	218	};
262		219
263	/* the structure where most of the perl state is stored, overlaid on the cxstack */	220	/* the structure where most of the perl state is stored, overlaid on the cxstack */
264	typedef struct	221	typedef struct
265	{	222	{
…		…
271	#define VAR(name,type) type name;	228	#define VAR(name,type) type name;
272	# include "state.h"	229	# include "state.h"
273	#undef VAR	230	#undef VAR
274	} perl_slots;	231	} perl_slots;
275		232
		233	// how many context stack entries do we need for perl_slots
276	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))	234	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
277		235
278	/* this is a structure representing a perl-level coroutine */	236	/* this is a structure representing a perl-level coroutine */
279	struct coro {	237	struct coro
		238	{
280	/* the C coroutine allocated to this perl coroutine, if any */	239	/* the C coroutine allocated to this perl coroutine, if any */
281	coro_cctx *cctx;	240	coro_cctx *cctx;
282		241
283	/* ready queue */	242	/* ready queue */
284	struct coro *next_ready;	243	struct coro *next_ready;
…		…
286	/* state data */	245	/* state data */
287	struct CoroSLF slf_frame; /* saved slf frame */	246	struct CoroSLF slf_frame; /* saved slf frame */
288	AV *mainstack;	247	AV *mainstack;
289	perl_slots *slot; /* basically the saved sp */	248	perl_slots *slot; /* basically the saved sp */
290		249
291	CV *startcv; /* the CV to execute */	250	CV *startcv; /* the CV to execute */
292	AV *args; /* data associated with this coroutine (initial args) */	251	AV *args; /* data associated with this coroutine (initial args) */
293	int refcnt; /* coroutines are refcounted, yes */
294	int flags; /* CF_ flags */	252	int flags; /* CF_ flags */
295	HV *hv; /* the perl hash associated with this coro, if any */	253	HV *hv; /* the perl hash associated with this coro, if any */
296	void (*on_destroy)(pTHX_ struct coro *coro);
297		254
298	/* statistics */	255	/* statistics */
299	int usecount; /* number of transfers to this coro */	256	int usecount; /* number of transfers to this coro */
300		257
301	/* coro process data */	258	/* coro process data */
302	int prio;	259	int prio;
303	SV *except; /* exception to be thrown */	260	SV *except; /* exception to be thrown */
304	SV *rouse_cb;	261	SV *rouse_cb; /* last rouse callback */
		262	AV *on_destroy; /* callbacks or coros to notify on destroy */
		263	AV *status; /* the exit status list */
305		264
306	/* async_pool */	265	/* async_pool */
307	SV *saved_deffh;	266	SV *saved_deffh;
308	SV *invoke_cb;	267	SV *invoke_cb;
309	AV *invoke_av;	268	AV *invoke_av;
310		269
311	/* on_enter/on_leave */	270	/* on_enter/on_leave */
312	AV *on_enter;	271	AV *on_enter;
313	AV *on_leave;	272	AV *on_leave;
314		273
		274	/* swap_sv */
		275	AV *swap_sv;
		276
315	/* times */	277	/* times */
316	coro_ts t_cpu, t_real;	278	coro_ts t_cpu, t_real;
317		279
318	/* linked list */	280	/* linked list */
319	struct coro *next, *prev;	281	struct coro *next, *prev;
…		…
322	typedef struct coro *Coro__State;	284	typedef struct coro *Coro__State;
323	typedef struct coro *Coro__State_or_hashref;	285	typedef struct coro *Coro__State_or_hashref;
324		286
325	/* the following variables are effectively part of the perl context */	287	/* the following variables are effectively part of the perl context */
326	/* and get copied between struct coro and these variables */	288	/* and get copied between struct coro and these variables */
327	/* the mainr easonw e don't support windows process emulation */	289	/* the main reason we don't support windows process emulation */
328	static struct CoroSLF slf_frame; /* the current slf frame */	290	static struct CoroSLF slf_frame; /* the current slf frame */
329		291
330	/** Coro ********************************************************************/	292	/** Coro ********************************************************************/
331		293
332	#define CORO_PRIO_MAX 3	294	#define CORO_PRIO_MAX 3
…		…
338		300
339	/* for Coro.pm */	301	/* for Coro.pm */
340	static SV *coro_current;	302	static SV *coro_current;
341	static SV *coro_readyhook;	303	static SV *coro_readyhook;
342	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */	304	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
343	static CV *cv_coro_run, *cv_coro_terminate;	305	static CV *cv_coro_run;
344	static struct coro *coro_first;	306	static struct coro *coro_first;
345	#define coro_nready coroapi.nready	307	#define coro_nready coroapi.nready
		308
		309	/** Coro::Select ************************************************************/
		310
		311	static OP *(*coro_old_pp_sselect) (pTHX);
		312	static SV *coro_select_select;
		313
		314	/* horrible hack, but if it works... */
		315	static OP *
		316	coro_pp_sselect (pTHX)
		317	{
		318	dSP;
		319	PUSHMARK (SP - 4); /* fake argument list */
		320	XPUSHs (coro_select_select);
		321	PUTBACK;
		322
		323	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		324	PL_op->op_flags |= OPf_STACKED;
		325	PL_op->op_private = 0;
		326	return PL_ppaddr [OP_ENTERSUB](aTHX);
		327	}
		328
		329	/** time stuff **************************************************************/
		330
		331	#ifdef HAS_GETTIMEOFDAY
		332
		333	static void
		334	coro_u2time (pTHX_ UV ret[2])
		335	{
		336	struct timeval tv;
		337	gettimeofday (&tv, 0);
		338
		339	ret [0] = tv.tv_sec;
		340	ret [1] = tv.tv_usec;
		341	}
		342
		343	static double
		344	coro_nvtime ()
		345	{
		346	struct timeval tv;
		347	gettimeofday (&tv, 0);
		348
		349	return tv.tv_sec + tv.tv_usec * 1e-6;
		350	}
		351
		352	static void
		353	time_init (pTHX)
		354	{
		355	nvtime = coro_nvtime;
		356	u2time = coro_u2time;
		357	}
		358
		359	#else
		360
		361	static void
		362	time_init (pTHX)
		363	{
		364	SV **svp;
		365
		366	require_pv ("Time/HiRes.pm");
		367
		368	svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		369
		370	if (!svp) croak ("Time::HiRes is required, but missing. Caught");
		371	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer. Caught");
		372
		373	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		374
		375	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		376	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
		377	}
		378
		379	#endif
346		380
347	/** lowlevel stuff **********************************************************/	381	/** lowlevel stuff **********************************************************/
348		382
349	static SV *	383	static SV *
350	coro_get_sv (pTHX_ const char *name, int create)	384	coro_get_sv (pTHX_ const char *name, int create)
…		…
372	#if PERL_VERSION_ATLEAST (5,10,0)	406	#if PERL_VERSION_ATLEAST (5,10,0)
373	/* silence stupid and wrong 5.10 warning that I am unable to switch off */	407	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
374	get_hv (name, create);	408	get_hv (name, create);
375	#endif	409	#endif
376	return get_hv (name, create);	410	return get_hv (name, create);
377	}
378
379	/* may croak */
380	INLINE CV *
381	coro_sv_2cv (pTHX_ SV *sv)
382	{
383	HV *st;
384	GV *gvp;
385	CV *cv = sv_2cv (sv, &st, &gvp, 0);
386
387	if (!cv)
388	croak ("code reference expected");
389
390	return cv;
391	}	411	}
392		412
393	INLINE void	413	INLINE void
394	coro_times_update ()	414	coro_times_update ()
395	{	415	{
…		…
454	: 0)	474	: 0)
455		475
456	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)	476	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
457	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)	477	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
458		478
		479	INLINE MAGIC *
		480	SvSTATEhv_p (pTHX_ SV *coro)
		481	{
		482	MAGIC *mg;
		483
		484	if (expect_true (
		485	SvTYPE (coro) == SVt_PVHV
		486	&& (mg = CORO_MAGIC_state (coro))
		487	&& mg->mg_virtual == &coro_state_vtbl
		488	))
		489	return mg;
		490
		491	return 0;
		492	}
		493
459	INLINE struct coro *	494	INLINE struct coro *
460	SvSTATE_ (pTHX_ SV *coro)	495	SvSTATE_ (pTHX_ SV *coro)
461	{	496	{
462	HV *stash;
463	MAGIC *mg;	497	MAGIC *mg;
464		498
465	if (SvROK (coro))	499	if (SvROK (coro))
466	coro = SvRV (coro);	500	coro = SvRV (coro);
467		501
468	if (expect_false (SvTYPE (coro) != SVt_PVHV))	502	mg = SvSTATEhv_p (aTHX_ coro);
		503	if (!mg)
469	croak ("Coro::State object required");	504	croak ("Coro::State object required");
470		505
471	stash = SvSTASH (coro);
472	if (expect_false (stash != coro_stash && stash != coro_state_stash))
473	{
474	/* very slow, but rare, check */
475	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
476	croak ("Coro::State object required");
477	}
478
479	mg = CORO_MAGIC_state (coro);
480	return (struct coro *)mg->mg_ptr;	506	return (struct coro *)mg->mg_ptr;
481	}	507	}
482		508
483	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	509	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
484		510
…		…
604	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	630	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
605	}	631	}
606		632
607	/** load & save, init *******************************************************/	633	/** load & save, init *******************************************************/
608		634
		635	/* swap sv heads, at least logically */
		636	static void
		637	swap_svs (pTHX_ Coro__State c)
		638	{
		639	int i;
		640
		641	for (i = 0; i <= AvFILLp (c->swap_sv); )
		642	{
		643	SV *a = AvARRAY (c->swap_sv)[i++];
		644	SV *b = AvARRAY (c->swap_sv)[i++];
		645
		646	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		647	SV tmp;
		648
		649	/* swap sv_any */
		650	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		651
		652	/* swap sv_flags */
		653	SvFLAGS (&tmp) = SvFLAGS (a);
		654	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		655	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		656
		657	#if PERL_VERSION_ATLEAST (5,10,0)
		658	/* perl 5.10 complicates this _quite_ a bit, but it also is
		659	* much faster, so no quarrels here. alternatively, we could
		660	* sv_upgrade to avoid this.
		661	*/
		662	{
		663	/* swap sv_u */
		664	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		665
		666	/* if SvANY points to the head, we need to adjust the pointers,
		667	* as the pointer for a still points to b, and maybe vice versa.
		668	*/
		669	#define svany_in_head(type) \
		670	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
		671
		672	if (svany_in_head (SvTYPE (a)))
		673	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		674
		675	if (svany_in_head (SvTYPE (b)))
		676	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		677	}
		678	#endif
		679	}
		680	}
		681
		682	#define SWAP_SVS(coro) \
		683	if (expect_false ((coro)->swap_sv)) \
		684	swap_svs (aTHX_ (coro))
		685
609	static void	686	static void
610	on_enterleave_call (pTHX_ SV *cb);	687	on_enterleave_call (pTHX_ SV *cb);
611		688
612	static void	689	static void
613	load_perl (pTHX_ Coro__State c)	690	load_perl (pTHX_ Coro__State c)
…		…
659	int i;	736	int i;
660		737
661	for (i = 0; i <= AvFILLp (c->on_enter); ++i)	738	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
662	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);	739	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
663	}	740	}
		741
		742	SWAP_SVS (c);
664	}	743	}
665		744
666	static void	745	static void
667	save_perl (pTHX_ Coro__State c)	746	save_perl (pTHX_ Coro__State c)
668	{	747	{
		748	SWAP_SVS (c);
		749
669	if (expect_false (c->on_leave))	750	if (expect_false (c->on_leave))
670	{	751	{
671	int i;	752	int i;
672		753
673	for (i = AvFILLp (c->on_leave); i >= 0; --i)	754	for (i = AvFILLp (c->on_leave); i >= 0; --i)
…		…
731		812
732	PUTBACK;	813	PUTBACK;
733	}	814	}
734		815
735	/* allocate some space on the context stack for our purposes */	816	/* allocate some space on the context stack for our purposes */
736	/* we manually unroll here, as usually 2 slots is enough */	817	if (expect_false (cxstack_ix + SLOT_COUNT >= cxstack_max))
737	if (SLOT_COUNT >= 1) CXINC;
738	if (SLOT_COUNT >= 2) CXINC;
739	if (SLOT_COUNT >= 3) CXINC;
740	{	818	{
741	unsigned int i;	819	unsigned int i;
		820
742	for (i = 3; i < SLOT_COUNT; ++i)	821	for (i = 0; i < SLOT_COUNT; ++i)
743	CXINC;	822	CXINC;
744	}	823
745	cxstack_ix -= SLOT_COUNT; /* undo allocation */	824	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		825	}
746		826
747	c->mainstack = PL_mainstack;	827	c->mainstack = PL_mainstack;
748		828
749	{	829	{
750	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	830	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
…		…
771	# define coro_init_stacks(thx) init_stacks ()	851	# define coro_init_stacks(thx) init_stacks ()
772	#else	852	#else
773	static void	853	static void
774	coro_init_stacks (pTHX)	854	coro_init_stacks (pTHX)
775	{	855	{
776	PL_curstackinfo = new_stackinfo(32, 8);	856	PL_curstackinfo = new_stackinfo(32, 4 + SLOT_COUNT); /* 3 is minimum due to perl rounding down in scope.c:GROW() */
777	PL_curstackinfo->si_type = PERLSI_MAIN;	857	PL_curstackinfo->si_type = PERLSI_MAIN;
778	PL_curstack = PL_curstackinfo->si_stack;	858	PL_curstack = PL_curstackinfo->si_stack;
779	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	859	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
780		860
781	PL_stack_base = AvARRAY(PL_curstack);	861	PL_stack_base = AvARRAY(PL_curstack);
…		…
888	#endif	968	#endif
889		969
890	/*	970	/*
891	* This overrides the default magic get method of %SIG elements.	971	* This overrides the default magic get method of %SIG elements.
892	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	972	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
893	* and instead of trying to save and restore the hash elements, we just provide	973	* and instead of trying to save and restore the hash elements (extremely slow),
894	* readback here.	974	* we just provide our own readback here.
895	*/	975	*/
896	static int	976	static int
897	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)	977	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
898	{	978	{
899	const char *s = MgPV_nolen_const (mg);	979	const char *s = MgPV_nolen_const (mg);
…		…
980	slf_check_repeat (pTHX_ struct CoroSLF *frame)	1060	slf_check_repeat (pTHX_ struct CoroSLF *frame)
981	{	1061	{
982	return 1;	1062	return 1;
983	}	1063	}
984		1064
985	static UNOP coro_setup_op;	1065	static UNOP init_perl_op;
986		1066
987	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1067	static void NOINLINE /* noinline to keep it out of the transfer fast path */
988	coro_setup (pTHX_ struct coro *coro)	1068	init_perl (pTHX_ struct coro *coro)
989	{	1069	{
990	/*	1070	/*
991	* emulate part of the perl startup here.	1071	* emulate part of the perl startup here.
992	*/	1072	*/
993	coro_init_stacks (aTHX);	1073	coro_init_stacks (aTHX);
…		…
1000	PL_comppad_name_fill = 0;	1080	PL_comppad_name_fill = 0;
1001	PL_comppad_name_floor = 0;	1081	PL_comppad_name_floor = 0;
1002	PL_curpm = 0;	1082	PL_curpm = 0;
1003	PL_curpad = 0;	1083	PL_curpad = 0;
1004	PL_localizing = 0;	1084	PL_localizing = 0;
1005	PL_dirty = 0;
1006	PL_restartop = 0;	1085	PL_restartop = 0;
1007	#if PERL_VERSION_ATLEAST (5,10,0)	1086	#if PERL_VERSION_ATLEAST (5,10,0)
1008	PL_parser = 0;	1087	PL_parser = 0;
1009	#endif	1088	#endif
1010	PL_hints = 0;	1089	PL_hints = 0;
1011		1090
1012	/* recreate the die/warn hooks */	1091	/* recreate the die/warn hooks */
1013	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	1092	PL_diehook = SvREFCNT_inc (rv_diehook);
1014	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);	1093	PL_warnhook = SvREFCNT_inc (rv_warnhook);
1015		1094
1016	GvSV (PL_defgv) = newSV (0);	1095	GvSV (PL_defgv) = newSV (0);
1017	GvAV (PL_defgv) = coro->args; coro->args = 0;	1096	GvAV (PL_defgv) = coro->args; coro->args = 0;
1018	GvSV (PL_errgv) = newSV (0);	1097	GvSV (PL_errgv) = newSV (0);
1019	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	1098	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
…		…
1040	/* this newly created coroutine might be run on an existing cctx which most	1119	/* this newly created coroutine might be run on an existing cctx which most
1041	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.	1120	* likely was suspended in pp_slf, so we have to emulate entering pp_slf here.
1042	*/	1121	*/
1043	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1122	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
1044	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1123	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
		1124	slf_frame.destroy = 0;
1045		1125
1046	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1126	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
1047	coro_setup_op.op_next = PL_op;	1127	init_perl_op.op_next = PL_op;
1048	coro_setup_op.op_type = OP_ENTERSUB;	1128	init_perl_op.op_type = OP_ENTERSUB;
1049	coro_setup_op.op_ppaddr = pp_slf;	1129	init_perl_op.op_ppaddr = pp_slf;
1050	/* no flags etc. required, as an init function won't be called */	1130	/* no flags etc. required, as an init function won't be called */
1051		1131
1052	PL_op = (OP *)&coro_setup_op;	1132	PL_op = (OP *)&init_perl_op;
1053		1133
1054	/* copy throw, in case it was set before coro_setup */	1134	/* copy throw, in case it was set before init_perl */
1055	CORO_THROW = coro->except;	1135	CORO_THROW = coro->except;
		1136
		1137	SWAP_SVS (coro);
1056		1138
1057	if (expect_false (enable_times))	1139	if (expect_false (enable_times))
1058	{	1140	{
1059	coro_times_update ();	1141	coro_times_update ();
1060	coro_times_sub (coro);	1142	coro_times_sub (coro);
…		…
1081	dounwind (-1);	1163	dounwind (-1);
1082	}	1164	}
1083	}	1165	}
1084		1166
1085	static void	1167	static void
1086	coro_destruct_perl (pTHX_ struct coro *coro)	1168	destroy_perl (pTHX_ struct coro *coro)
1087	{	1169	{
1088	SV *svf [9];	1170	SV *svf [9];
1089		1171
1090	{	1172	{
		1173	SV *old_current = SvRV (coro_current);
1091	struct coro *current = SvSTATE_current;	1174	struct coro *current = SvSTATE (old_current);
1092		1175
1093	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));	1176	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
1094		1177
1095	save_perl (aTHX_ current);	1178	save_perl (aTHX_ current);
		1179
		1180	/* this will cause transfer_check to croak on block*/
		1181	SvRV_set (coro_current, (SV *)coro->hv);
		1182
1096	load_perl (aTHX_ coro);	1183	load_perl (aTHX_ coro);
1097		1184
1098	coro_unwind_stacks (aTHX);	1185	coro_unwind_stacks (aTHX);
		1186
		1187	/* restore swapped sv's */
		1188	SWAP_SVS (coro);
		1189
1099	coro_destruct_stacks (aTHX);	1190	coro_destruct_stacks (aTHX);
1100		1191
1101	// now save some sv's to be free'd later	1192	// now save some sv's to be free'd later
1102	svf [0] = GvSV (PL_defgv);	1193	svf [0] = GvSV (PL_defgv);
1103	svf [1] = (SV *)GvAV (PL_defgv);	1194	svf [1] = (SV *)GvAV (PL_defgv);
…		…
1108	svf [6] = (SV *)GvHV (PL_hintgv);	1199	svf [6] = (SV *)GvHV (PL_hintgv);
1109	svf [7] = PL_diehook;	1200	svf [7] = PL_diehook;
1110	svf [8] = PL_warnhook;	1201	svf [8] = PL_warnhook;
1111	assert (9 == sizeof (svf) / sizeof (*svf));	1202	assert (9 == sizeof (svf) / sizeof (*svf));
1112		1203
		1204	SvRV_set (coro_current, old_current);
		1205
1113	load_perl (aTHX_ current);	1206	load_perl (aTHX_ current);
1114	}	1207	}
1115		1208
1116	{	1209	{
1117	unsigned int i;	1210	unsigned int i;
…		…
1129	INLINE void	1222	INLINE void
1130	free_coro_mortal (pTHX)	1223	free_coro_mortal (pTHX)
1131	{	1224	{
1132	if (expect_true (coro_mortal))	1225	if (expect_true (coro_mortal))
1133	{	1226	{
1134	SvREFCNT_dec (coro_mortal);	1227	SvREFCNT_dec ((SV *)coro_mortal);
1135	coro_mortal = 0;	1228	coro_mortal = 0;
1136	}	1229	}
1137	}	1230	}
1138		1231
1139	static int	1232	static int
…		…
1328	/* somebody or something will hit me for both perl_run and PL_restartop */	1421	/* somebody or something will hit me for both perl_run and PL_restartop */
1329	PL_restartop = PL_op;	1422	PL_restartop = PL_op;
1330	perl_run (PL_curinterp);	1423	perl_run (PL_curinterp);
1331	/*	1424	/*
1332	* Unfortunately, there is no way to get at the return values of the	1425	* Unfortunately, there is no way to get at the return values of the
1333	* coro body here, as perl_run destroys these	1426	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1427	* runtime errors here, as this is just a random interpreter, not a thread.
1334	*/	1428	*/
1335		1429
1336	/*	1430	/*
1337	* If perl-run returns we assume exit() was being called or the coro	1431	* If perl-run returns we assume exit() was being called or the coro
1338	* fell off the end, which seems to be the only valid (non-bug)	1432	* fell off the end, which seems to be the only valid (non-bug)
…		…
1425	cctx_destroy (coro_cctx *cctx)	1519	cctx_destroy (coro_cctx *cctx)
1426	{	1520	{
1427	if (!cctx)	1521	if (!cctx)
1428	return;	1522	return;
1429		1523
1430	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?	1524	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));
1431		1525
1432	--cctx_count;	1526	--cctx_count;
1433	coro_destroy (&cctx->cctx);	1527	coro_destroy (&cctx->cctx);
1434		1528
1435	/* coro_transfer creates new, empty cctx's */	1529	/* coro_transfer creates new, empty cctx's */
…		…
1501	if (expect_true (prev != next))	1595	if (expect_true (prev != next))
1502	{	1596	{
1503	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1597	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1504	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");	1598	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1505		1599
1506	if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))	1600	if (expect_false (next->flags & (CF_RUNNING | CF_ZOMBIE | CF_SUSPENDED)))
1507	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");	1601	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1508		1602
1509	#if !PERL_VERSION_ATLEAST (5,10,0)	1603	#if !PERL_VERSION_ATLEAST (5,10,0)
1510	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1604	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1511	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1605	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
…		…
1545	if (expect_false (next->flags & CF_NEW))	1639	if (expect_false (next->flags & CF_NEW))
1546	{	1640	{
1547	/* need to start coroutine */	1641	/* need to start coroutine */
1548	next->flags &= ~CF_NEW;	1642	next->flags &= ~CF_NEW;
1549	/* setup coroutine call */	1643	/* setup coroutine call */
1550	coro_setup (aTHX_ next);	1644	init_perl (aTHX_ next);
1551	}	1645	}
1552	else	1646	else
1553	load_perl (aTHX_ next);	1647	load_perl (aTHX_ next);
1554		1648
1555	/* possibly untie and reuse the cctx */	1649	/* possibly untie and reuse the cctx */
…		…
1594	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))	1688	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1595	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1689	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1596		1690
1597	/** high level stuff ********************************************************/	1691	/** high level stuff ********************************************************/
1598		1692
		1693	/* this function is actually Coro, not Coro::State, but we call it from here */
		1694	/* because it is convenient - but it hasn't been declared yet for that reason */
1599	static int	1695	static void
		1696	coro_call_on_destroy (pTHX_ struct coro *coro);
		1697
		1698	static void
1600	coro_state_destroy (pTHX_ struct coro *coro)	1699	coro_state_destroy (pTHX_ struct coro *coro)
1601	{	1700	{
1602	if (coro->flags & CF_DESTROYED)	1701	if (coro->flags & CF_ZOMBIE)
1603	return 0;	1702	return;
1604		1703
1605	if (coro->on_destroy && !PL_dirty)
1606	coro->on_destroy (aTHX_ coro);	1704	slf_destroy (aTHX_ coro);
1607		1705
1608	coro->flags |= CF_DESTROYED;	1706	coro->flags |= CF_ZOMBIE;
1609		1707
1610	if (coro->flags & CF_READY)	1708	if (coro->flags & CF_READY)
1611	{	1709	{
1612	/* reduce nready, as destroying a ready coro effectively unreadies it */	1710	/* reduce nready, as destroying a ready coro effectively unreadies it */
1613	/* alternative: look through all ready queues and remove the coro */	1711	/* alternative: look through all ready queues and remove the coro */
1614	--coro_nready;	1712	--coro_nready;
1615	}	1713	}
1616	else	1714	else
1617	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1715	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
		1716
		1717	if (coro->next) coro->next->prev = coro->prev;
		1718	if (coro->prev) coro->prev->next = coro->next;
		1719	if (coro == coro_first) coro_first = coro->next;
1618		1720
1619	if (coro->mainstack	1721	if (coro->mainstack
1620	&& coro->mainstack != main_mainstack	1722	&& coro->mainstack != main_mainstack
1621	&& coro->slot	1723	&& coro->slot
1622	&& !PL_dirty)	1724	&& !PL_dirty)
1623	coro_destruct_perl (aTHX_ coro);	1725	destroy_perl (aTHX_ coro);
1624		1726
1625	cctx_destroy (coro->cctx);	1727	cctx_destroy (coro->cctx);
1626	SvREFCNT_dec (coro->startcv);	1728	SvREFCNT_dec (coro->startcv);
1627	SvREFCNT_dec (coro->args);	1729	SvREFCNT_dec (coro->args);
		1730	SvREFCNT_dec (coro->swap_sv);
1628	SvREFCNT_dec (CORO_THROW);	1731	SvREFCNT_dec (CORO_THROW);
1629		1732
1630	if (coro->next) coro->next->prev = coro->prev;	1733	coro_call_on_destroy (aTHX_ coro);
1631	if (coro->prev) coro->prev->next = coro->next;
1632	if (coro == coro_first) coro_first = coro->next;
1633		1734
1634	return 1;	1735	/* more destruction mayhem in coro_state_free */
1635	}	1736	}
1636		1737
1637	static int	1738	static int
1638	coro_state_free (pTHX_ SV *sv, MAGIC *mg)	1739	coro_state_free (pTHX_ SV *sv, MAGIC *mg)
1639	{	1740	{
1640	struct coro *coro = (struct coro *)mg->mg_ptr;	1741	struct coro *coro = (struct coro *)mg->mg_ptr;
1641	mg->mg_ptr = 0;	1742	mg->mg_ptr = 0;
1642		1743
1643	coro->hv = 0;
1644
1645	if (--coro->refcnt < 0)
1646	{
1647	coro_state_destroy (aTHX_ coro);	1744	coro_state_destroy (aTHX_ coro);
		1745	SvREFCNT_dec (coro->on_destroy);
		1746	SvREFCNT_dec (coro->status);
		1747
1648	Safefree (coro);	1748	Safefree (coro);
1649	}
1650		1749
1651	return 0;	1750	return 0;
1652	}	1751	}
1653		1752
1654	static int	1753	static int
1655	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)	1754	coro_state_dup (pTHX_ MAGIC *mg, CLONE_PARAMS *params)
1656	{	1755	{
1657	struct coro *coro = (struct coro *)mg->mg_ptr;	1756	/* called when perl clones the current process the slow way (windows process emulation) */
1658		1757	/* WE SIMply nuke the pointers in the copy, causing perl to croak */
1659	++coro->refcnt;	1758	mg->mg_ptr = 0;
		1759	mg->mg_virtual = 0;
1660		1760
1661	return 0;	1761	return 0;
1662	}	1762	}
1663		1763
1664	static MGVTBL coro_state_vtbl = {	1764	static MGVTBL coro_state_vtbl = {
…		…
1687		1787
1688	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1788	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1689	TRANSFER (ta, 1);	1789	TRANSFER (ta, 1);
1690	}	1790	}
1691		1791
1692	/*****************************************************************************/
1693	/* gensub: simple closure generation utility */
1694
1695	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1696
1697	/* create a closure from XS, returns a code reference */
1698	/* the arg can be accessed via GENSUB_ARG from the callback */
1699	/* the callback must use dXSARGS/XSRETURN */
1700	static SV *
1701	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1702	{
1703	CV *cv = (CV *)newSV (0);
1704
1705	sv_upgrade ((SV *)cv, SVt_PVCV);
1706
1707	CvANON_on (cv);
1708	CvISXSUB_on (cv);
1709	CvXSUB (cv) = xsub;
1710	GENSUB_ARG = arg;
1711
1712	return newRV_noinc ((SV *)cv);
1713	}
1714
1715	/** Coro ********************************************************************/	1792	/** Coro ********************************************************************/
1716		1793
1717	INLINE void	1794	INLINE void
1718	coro_enq (pTHX_ struct coro *coro)	1795	coro_enq (pTHX_ struct coro *coro)
1719	{	1796	{
…		…
1744	}	1821	}
1745		1822
1746	return 0;	1823	return 0;
1747	}	1824	}
1748		1825
		1826	static void
		1827	invoke_sv_ready_hook_helper (void)
		1828	{
		1829	dTHX;
		1830	dSP;
		1831
		1832	ENTER;
		1833	SAVETMPS;
		1834
		1835	PUSHMARK (SP);
		1836	PUTBACK;
		1837	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1838
		1839	FREETMPS;
		1840	LEAVE;
		1841	}
		1842
1749	static int	1843	static int
1750	api_ready (pTHX_ SV *coro_sv)	1844	api_ready (pTHX_ SV *coro_sv)
1751	{	1845	{
1752	struct coro *coro;
1753	SV *sv_hook;
1754	void (*xs_hook)(void);
1755
1756	coro = SvSTATE (coro_sv);	1846	struct coro *coro = SvSTATE (coro_sv);
1757		1847
1758	if (coro->flags & CF_READY)	1848	if (coro->flags & CF_READY)
1759	return 0;	1849	return 0;
1760		1850
1761	coro->flags |= CF_READY;	1851	coro->flags |= CF_READY;
1762		1852
1763	sv_hook = coro_nready ? 0 : coro_readyhook;
1764	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1765
1766	coro_enq (aTHX_ coro);	1853	coro_enq (aTHX_ coro);
1767	++coro_nready;
1768		1854
1769	if (sv_hook)	1855	if (!coro_nready++)
1770	{	1856	if (coroapi.readyhook)
1771	dSP;	1857	coroapi.readyhook ();
1772
1773	ENTER;
1774	SAVETMPS;
1775
1776	PUSHMARK (SP);
1777	PUTBACK;
1778	call_sv (sv_hook, G_VOID | G_DISCARD);
1779
1780	FREETMPS;
1781	LEAVE;
1782	}
1783
1784	if (xs_hook)
1785	xs_hook ();
1786		1858
1787	return 1;	1859	return 1;
1788	}	1860	}
1789		1861
1790	static int	1862	static int
…		…
1818	struct coro *next = coro_deq (aTHX);	1890	struct coro *next = coro_deq (aTHX);
1819		1891
1820	if (expect_true (next))	1892	if (expect_true (next))
1821	{	1893	{
1822	/* cannot transfer to destroyed coros, skip and look for next */	1894	/* cannot transfer to destroyed coros, skip and look for next */
1823	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))	1895	if (expect_false (next->flags & (CF_ZOMBIE | CF_SUSPENDED)))
1824	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */	1896	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1825	else	1897	else
1826	{	1898	{
1827	next->flags &= ~CF_READY;	1899	next->flags &= ~CF_READY;
1828	--coro_nready;	1900	--coro_nready;
…		…
1835	{	1907	{
1836	/* nothing to schedule: call the idle handler */	1908	/* nothing to schedule: call the idle handler */
1837	if (SvROK (sv_idle)	1909	if (SvROK (sv_idle)
1838	&& SvOBJECT (SvRV (sv_idle)))	1910	&& SvOBJECT (SvRV (sv_idle)))
1839	{	1911	{
		1912	if (SvRV (sv_idle) == SvRV (coro_current))
		1913	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1914
1840	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */	1915	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
1841	api_ready (aTHX_ SvRV (sv_idle));	1916	api_ready (aTHX_ SvRV (sv_idle));
1842	--coro_nready;	1917	--coro_nready;
1843	}	1918	}
1844	else	1919	else
1845	{	1920	{
		1921	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1846	dSP;	1922	dSP;
1847		1923
1848	ENTER;	1924	ENTER;
1849	SAVETMPS;	1925	SAVETMPS;
1850		1926
…		…
1957	coro->slot->runops = RUNOPS_DEFAULT;	2033	coro->slot->runops = RUNOPS_DEFAULT;
1958	}	2034	}
1959	}	2035	}
1960		2036
1961	static void	2037	static void
		2038	coro_push_av (pTHX_ AV *av, I32 gimme_v)
		2039	{
		2040	if (AvFILLp (av) >= 0 && gimme_v != G_VOID)
		2041	{
		2042	dSP;
		2043
		2044	if (gimme_v == G_SCALAR)
		2045	XPUSHs (AvARRAY (av)[AvFILLp (av)]);
		2046	else
		2047	{
		2048	int i;
		2049	EXTEND (SP, AvFILLp (av) + 1);
		2050
		2051	for (i = 0; i <= AvFILLp (av); ++i)
		2052	PUSHs (AvARRAY (av)[i]);
		2053	}
		2054
		2055	PUTBACK;
		2056	}
		2057	}
		2058
		2059	static void
		2060	coro_push_on_destroy (pTHX_ struct coro *coro, SV *cb)
		2061	{
		2062	if (!coro->on_destroy)
		2063	coro->on_destroy = newAV ();
		2064
		2065	av_push (coro->on_destroy, cb);
		2066	}
		2067
		2068	static void
		2069	slf_destroy_join (pTHX_ struct CoroSLF *frame)
		2070	{
		2071	SvREFCNT_dec ((SV *)((struct coro *)frame->data)->hv);
		2072	}
		2073
		2074	static int
		2075	slf_check_join (pTHX_ struct CoroSLF *frame)
		2076	{
		2077	struct coro *coro = (struct coro *)frame->data;
		2078
		2079	if (!coro->status)
		2080	return 1;
		2081
		2082	frame->destroy = 0;
		2083
		2084	coro_push_av (aTHX_ coro->status, GIMME_V);
		2085
		2086	SvREFCNT_dec ((SV *)coro->hv);
		2087
		2088	return 0;
		2089	}
		2090
		2091	static void
		2092	slf_init_join (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2093	{
		2094	struct coro *coro = SvSTATE (items > 0 ? arg [0] : &PL_sv_undef);
		2095
		2096	if (items > 1)
		2097	croak ("join called with too many arguments");
		2098
		2099	if (coro->status)
		2100	frame->prepare = prepare_nop;
		2101	else
		2102	{
		2103	coro_push_on_destroy (aTHX_ coro, SvREFCNT_inc_NN (SvRV (coro_current)));
		2104	frame->prepare = prepare_schedule;
		2105	}
		2106
		2107	frame->check = slf_check_join;
		2108	frame->destroy = slf_destroy_join;
		2109	frame->data = (void *)coro;
		2110	SvREFCNT_inc (coro->hv);
		2111	}
		2112
		2113	static void
1962	coro_call_on_destroy (pTHX_ struct coro *coro)	2114	coro_call_on_destroy (pTHX_ struct coro *coro)
1963	{	2115	{
1964	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);	2116	AV *od = coro->on_destroy;
1965	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
1966		2117
1967	if (on_destroyp)	2118	if (!od)
1968	{	2119	return;
1969	AV *on_destroy = (AV *)SvRV (*on_destroyp);
1970		2120
1971	while (AvFILLp (on_destroy) >= 0)	2121	while (AvFILLp (od) >= 0)
		2122	{
		2123	SV *cb = sv_2mortal (av_pop (od));
		2124
		2125	/* coro hv's (and only hv's at the moment) are supported as well */
		2126	if (SvSTATEhv_p (aTHX_ cb))
		2127	api_ready (aTHX_ cb);
		2128	else
1972	{	2129	{
1973	dSP; /* don't disturb outer sp */	2130	dSP; /* don't disturb outer sp */
1974	SV *cb = av_pop (on_destroy);
1975
1976	PUSHMARK (SP);	2131	PUSHMARK (SP);
1977		2132
1978	if (statusp)	2133	if (coro->status)
1979	{	2134	{
1980	int i;	2135	PUTBACK;
1981	AV *status = (AV *)SvRV (*statusp);	2136	coro_push_av (aTHX_ coro->status, G_ARRAY);
1982	EXTEND (SP, AvFILLp (status) + 1);	2137	SPAGAIN;
1983
1984	for (i = 0; i <= AvFILLp (status); ++i)
1985	PUSHs (AvARRAY (status)[i]);
1986	}	2138	}
1987		2139
1988	PUTBACK;	2140	PUTBACK;
1989	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);	2141	call_sv (cb, G_VOID | G_DISCARD);
1990	}	2142	}
1991	}	2143	}
1992	}	2144	}
1993		2145
1994	static void	2146	static void
1995	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2147	coro_set_status (pTHX_ struct coro *coro, SV **arg, int items)
1996	{	2148	{
		2149	AV *av;
		2150
		2151	if (coro->status)
		2152	{
		2153	av = coro->status;
		2154	av_clear (av);
		2155	}
		2156	else
		2157	av = coro->status = newAV ();
		2158
		2159	/* items are actually not so common, so optimise for this case */
		2160	if (items)
		2161	{
1997	int i;	2162	int i;
1998	HV *hv = (HV *)SvRV (coro_current);
1999	AV *av = newAV ();
2000		2163
2001	av_extend (av, items - 1);	2164	av_extend (av, items - 1);
		2165
2002	for (i = 0; i < items; ++i)	2166	for (i = 0; i < items; ++i)
2003	av_push (av, SvREFCNT_inc_NN (arg [i]));	2167	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2168	}
		2169	}
2004		2170
2005	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2171	static void
2006		2172	slf_init_terminate_cancel_common (pTHX_ struct CoroSLF *frame, HV *coro_hv)
		2173	{
2007	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */	2174	av_push (av_destroy, (SV *)newRV_inc ((SV *)coro_hv)); /* RVinc for perl */
2008	api_ready (aTHX_ sv_manager);	2175	api_ready (aTHX_ sv_manager);
2009		2176
2010	frame->prepare = prepare_schedule;	2177	frame->prepare = prepare_schedule;
2011	frame->check = slf_check_repeat;	2178	frame->check = slf_check_repeat;
2012		2179
2013	/* as a minor optimisation, we could unwind all stacks here */	2180	/* as a minor optimisation, we could unwind all stacks here */
2014	/* but that puts extra pressure on pp_slf, and is not worth much */	2181	/* but that puts extra pressure on pp_slf, and is not worth much */
2015	/*coro_unwind_stacks (aTHX);*/	2182	/*coro_unwind_stacks (aTHX);*/
		2183	}
		2184
		2185	static void
		2186	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2187	{
		2188	HV *coro_hv = (HV *)SvRV (coro_current);
		2189
		2190	coro_set_status (aTHX_ SvSTATE ((SV *)coro_hv), arg, items);
		2191	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
		2192	}
		2193
		2194	static void
		2195	slf_init_cancel (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2196	{
		2197	HV *coro_hv;
		2198	struct coro *coro;
		2199
		2200	if (items <= 0)
		2201	croak ("Coro::cancel called without coro object,");
		2202
		2203	coro = SvSTATE (arg [0]);
		2204	coro_hv = coro->hv;
		2205
		2206	coro_set_status (aTHX_ coro, arg + 1, items - 1);
		2207
		2208	if (expect_false (coro->flags & CF_NOCANCEL))
		2209	{
		2210	/* coro currently busy cancelling something, so just notify it */
		2211	coro->slf_frame.data = (void *)coro;
		2212
		2213	frame->prepare = prepare_nop;
		2214	frame->check = slf_check_nop;
		2215	}
		2216	else if (coro_hv == (HV *)SvRV (coro_current))
		2217	{
		2218	/* cancelling the current coro is allowed, and equals terminate */
		2219	slf_init_terminate_cancel_common (aTHX_ frame, coro_hv);
		2220	}
		2221	else
		2222	{
		2223	struct coro *self = SvSTATE_current;
		2224
		2225	/* otherwise we cancel directly, purely for speed reasons
		2226	* unfortunately, this requires some magic trickery, as
		2227	* somebody else could cancel us, so we have to fight the cancellation.
		2228	* this is ugly, and hopefully fully worth the extra speed.
		2229	* besides, I can't get the slow-but-safe version working...
		2230	*/
		2231	slf_frame.data = 0;
		2232	self->flags |= CF_NOCANCEL;
		2233	coro_state_destroy (aTHX_ coro);
		2234	self->flags &= ~CF_NOCANCEL;
		2235
		2236	if (slf_frame.data)
		2237	{
		2238	/* while we were busy we have been cancelled, so terminate */
		2239	slf_init_terminate_cancel_common (aTHX_ frame, self->hv);
		2240	}
		2241	else
		2242	{
		2243	frame->prepare = prepare_nop;
		2244	frame->check = slf_check_nop;
		2245	}
		2246	}
		2247	}
		2248
		2249	static int
		2250	slf_check_safe_cancel (pTHX_ struct CoroSLF *frame)
		2251	{
		2252	frame->prepare = 0;
		2253	coro_unwind_stacks (aTHX);
		2254
		2255	slf_init_terminate_cancel_common (aTHX_ frame, (HV *)SvRV (coro_current));
		2256
		2257	return 1;
		2258	}
		2259
		2260	static int
		2261	safe_cancel (pTHX_ struct coro *coro, SV **arg, int items)
		2262	{
		2263	if (coro->cctx)
		2264	croak ("coro inside C callback, unable to cancel at this time, caught");
		2265
		2266	if (coro->flags & CF_NEW)
		2267	{
		2268	coro_set_status (aTHX_ coro, arg, items);
		2269	coro_state_destroy (aTHX_ coro);
		2270	}
		2271	else
		2272	{
		2273	if (!coro->slf_frame.prepare)
		2274	croak ("coro outside an SLF function, unable to cancel at this time, caught");
		2275
		2276	slf_destroy (aTHX_ coro);
		2277
		2278	coro_set_status (aTHX_ coro, arg, items);
		2279	coro->slf_frame.prepare = prepare_nop;
		2280	coro->slf_frame.check = slf_check_safe_cancel;
		2281
		2282	api_ready (aTHX_ (SV *)coro->hv);
		2283	}
		2284
		2285	return 1;
2016	}	2286	}
2017		2287
2018	/*****************************************************************************/	2288	/*****************************************************************************/
2019	/* async pool handler */	2289	/* async pool handler */
2020		2290
…		…
2060	coro->saved_deffh = 0;	2330	coro->saved_deffh = 0;
2061		2331
2062	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)	2332	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
2063	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2333	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
2064	{	2334	{
2065	coro->invoke_cb = SvREFCNT_inc_NN ((SV *)cv_coro_terminate);	2335	slf_init_terminate_cancel_common (aTHX_ frame, hv);
2066	coro->invoke_av = newAV ();	2336	return;
2067
2068	frame->prepare = prepare_nop;
2069	}	2337	}
2070	else	2338	else
2071	{	2339	{
2072	av_clear (GvAV (PL_defgv));	2340	av_clear (GvAV (PL_defgv));
2073	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);	2341	hv_store (hv, "desc", sizeof ("desc") - 1, SvREFCNT_inc_NN (sv_async_pool_idle), 0);
…		…
2098		2366
2099	static void	2367	static void
2100	coro_rouse_callback (pTHX_ CV *cv)	2368	coro_rouse_callback (pTHX_ CV *cv)
2101	{	2369	{
2102	dXSARGS;	2370	dXSARGS;
2103	SV *data = (SV *)GENSUB_ARG;	2371	SV *data = (SV *)S_GENSUB_ARG;
2104		2372
2105	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2373	if (SvTYPE (SvRV (data)) != SVt_PVAV)
2106	{	2374	{
2107	/* first call, set args */	2375	/* first call, set args */
2108	SV *coro = SvRV (data);	2376	SV *coro = SvRV (data);
…		…
2174	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2442	|| SvTYPE (SvRV (cb)) != SVt_PVCV
2175	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2443	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
2176	croak ("Coro::rouse_wait called with illegal callback argument,");	2444	croak ("Coro::rouse_wait called with illegal callback argument,");
2177		2445
2178	{	2446	{
2179	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2447	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2180	SV *data = (SV *)GENSUB_ARG;	2448	SV *data = (SV *)S_GENSUB_ARG;
2181		2449
2182	frame->data = (void *)data;	2450	frame->data = (void *)data;
2183	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2451	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2184	frame->check = slf_check_rouse_wait;	2452	frame->check = slf_check_rouse_wait;
2185	}	2453	}
…		…
2189	coro_new_rouse_cb (pTHX)	2457	coro_new_rouse_cb (pTHX)
2190	{	2458	{
2191	HV *hv = (HV *)SvRV (coro_current);	2459	HV *hv = (HV *)SvRV (coro_current);
2192	struct coro *coro = SvSTATE_hv (hv);	2460	struct coro *coro = SvSTATE_hv (hv);
2193	SV *data = newRV_inc ((SV *)hv);	2461	SV *data = newRV_inc ((SV *)hv);
2194	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2462	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2195		2463
2196	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2464	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2197	SvREFCNT_dec (data); /* magicext increases the refcount */	2465	SvREFCNT_dec (data); /* magicext increases the refcount */
2198		2466
2199	SvREFCNT_dec (coro->rouse_cb);	2467	SvREFCNT_dec (coro->rouse_cb);
…		…
2296	static void	2564	static void
2297	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2565	slf_init_cede_notself (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2298	{	2566	{
2299	frame->prepare = prepare_cede_notself;	2567	frame->prepare = prepare_cede_notself;
2300	frame->check = slf_check_nop;	2568	frame->check = slf_check_nop;
		2569	}
		2570
		2571	/* "undo"/cancel a running slf call - used when cancelling a coro, mainly */
		2572	static void
		2573	slf_destroy (pTHX_ struct coro *coro)
		2574	{
		2575	/* this callback is reserved for slf functions needing to do cleanup */
		2576	if (coro->slf_frame.destroy && coro->slf_frame.prepare && !PL_dirty)
		2577	coro->slf_frame.destroy (aTHX_ &coro->slf_frame);
		2578
		2579	/*
		2580	* The on_destroy above most likely is from an SLF call.
		2581	* Since by definition the SLF call will not finish when we destroy
		2582	* the coro, we will have to force-finish it here, otherwise
		2583	* cleanup functions cannot call SLF functions.
		2584	*/
		2585	coro->slf_frame.prepare = 0;
2301	}	2586	}
2302		2587
2303	/*	2588	/*
2304	* these not obviously related functions are all rolled into one	2589	* these not obviously related functions are all rolled into one
2305	* function to increase chances that they all will call transfer with the same	2590	* function to increase chances that they all will call transfer with the same
…		…
2374	croak (0);	2659	croak (0);
2375	}	2660	}
2376		2661
2377	/* return value handling - mostly like entersub */	2662	/* return value handling - mostly like entersub */
2378	/* make sure we put something on the stack in scalar context */	2663	/* make sure we put something on the stack in scalar context */
2379	if (GIMME_V == G_SCALAR)	2664	if (GIMME_V == G_SCALAR
		2665	&& expect_false (PL_stack_sp != PL_stack_base + checkmark + 1))
2380	{	2666	{
2381	dSP;	2667	dSP;
2382	SV **bot = PL_stack_base + checkmark;	2668	SV **bot = PL_stack_base + checkmark;
2383		2669
2384	if (sp == bot) /* too few, push undef */	2670	if (sp == bot) /* too few, push undef */
2385	bot [1] = &PL_sv_undef;	2671	bot [1] = &PL_sv_undef;
2386	else if (sp != bot + 1) /* too many, take last one */	2672	else /* too many, take last one */
2387	bot [1] = *sp;	2673	bot [1] = *sp;
2388		2674
2389	SP = bot + 1;	2675	SP = bot + 1;
2390		2676
2391	PUTBACK;	2677	PUTBACK;
…		…
2424	if (PL_op->op_flags & OPf_STACKED)	2710	if (PL_op->op_flags & OPf_STACKED)
2425	{	2711	{
2426	if (items > slf_arga)	2712	if (items > slf_arga)
2427	{	2713	{
2428	slf_arga = items;	2714	slf_arga = items;
2429	free (slf_argv);	2715	Safefree (slf_argv);
2430	slf_argv = malloc (slf_arga * sizeof (SV *));	2716	New (0, slf_argv, slf_arga, SV *);
2431	}	2717	}
2432		2718
2433	slf_argc = items;	2719	slf_argc = items;
2434		2720
2435	for (i = 0; i < items; ++i)	2721	for (i = 0; i < items; ++i)
…		…
2631	SvREFCNT_dec (cb);	2917	SvREFCNT_dec (cb);
2632	}	2918	}
2633	}	2919	}
2634		2920
2635	static void	2921	static void
2636	coro_semaphore_on_destroy (pTHX_ struct coro *coro)	2922	coro_semaphore_destroy (pTHX_ struct CoroSLF *frame)
2637	{	2923	{
2638	/* call $sem->adjust (0) to possibly wake up some other waiters */	2924	/* call $sem->adjust (0) to possibly wake up some other waiters */
2639	coro_semaphore_adjust (aTHX_ (AV *)coro->slf_frame.data, 0);	2925	coro_semaphore_adjust (aTHX_ (AV *)frame->data, 0);
2640	}	2926	}
2641		2927
2642	static int	2928	static int
2643	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)	2929	slf_check_semaphore_down_or_wait (pTHX_ struct CoroSLF *frame, int acquire)
2644	{	2930	{
2645	AV *av = (AV *)frame->data;	2931	AV *av = (AV *)frame->data;
2646	SV *count_sv = AvARRAY (av)[0];	2932	SV *count_sv = AvARRAY (av)[0];
		2933	SV *coro_hv = SvRV (coro_current);
2647		2934
2648	/* if we are about to throw, don't actually acquire the lock, just throw */	2935	/* if we are about to throw, don't actually acquire the lock, just throw */
2649	if (CORO_THROW)	2936	if (CORO_THROW)
2650	return 0;	2937	return 0;
2651	else if (SvIVX (count_sv) > 0)	2938	else if (SvIVX (count_sv) > 0)
2652	{	2939	{
2653	SvSTATE_current->on_destroy = 0;	2940	frame->destroy = 0;
2654		2941
2655	if (acquire)	2942	if (acquire)
2656	SvIVX (count_sv) = SvIVX (count_sv) - 1;	2943	SvIVX (count_sv) = SvIVX (count_sv) - 1;
2657	else	2944	else
2658	coro_semaphore_adjust (aTHX_ av, 0);	2945	coro_semaphore_adjust (aTHX_ av, 0);
…		…
2663	{	2950	{
2664	int i;	2951	int i;
2665	/* if we were woken up but can't down, we look through the whole */	2952	/* if we were woken up but can't down, we look through the whole */
2666	/* waiters list and only add us if we aren't in there already */	2953	/* waiters list and only add us if we aren't in there already */
2667	/* this avoids some degenerate memory usage cases */	2954	/* this avoids some degenerate memory usage cases */
2668		2955	for (i = AvFILLp (av); i > 0; --i) // i > 0 is not an off-by-one bug
2669	for (i = 1; i <= AvFILLp (av); ++i)
2670	if (AvARRAY (av)[i] == SvRV (coro_current))	2956	if (AvARRAY (av)[i] == coro_hv)
2671	return 1;	2957	return 1;
2672		2958
2673	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2959	av_push (av, SvREFCNT_inc (coro_hv));
2674	return 1;	2960	return 1;
2675	}	2961	}
2676	}	2962	}
2677		2963
2678	static int	2964	static int
…		…
2701	{	2987	{
2702	av_push (av, SvREFCNT_inc (SvRV (coro_current)));	2988	av_push (av, SvREFCNT_inc (SvRV (coro_current)));
2703		2989
2704	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));	2990	frame->data = (void *)sv_2mortal (SvREFCNT_inc ((SV *)av));
2705	frame->prepare = prepare_schedule;	2991	frame->prepare = prepare_schedule;
2706
2707	/* to avoid race conditions when a woken-up coro gets terminated */	2992	/* to avoid race conditions when a woken-up coro gets terminated */
2708	/* we arrange for a temporary on_destroy that calls adjust (0) */	2993	/* we arrange for a temporary on_destroy that calls adjust (0) */
2709	SvSTATE_current->on_destroy = coro_semaphore_on_destroy;	2994	frame->destroy = coro_semaphore_destroy;
2710	}	2995	}
2711	}	2996	}
2712		2997
2713	static void	2998	static void
2714	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2999	slf_init_semaphore_down (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
…		…
2722	{	3007	{
2723	if (items >= 2)	3008	if (items >= 2)
2724	{	3009	{
2725	/* callback form */	3010	/* callback form */
2726	AV *av = (AV *)SvRV (arg [0]);	3011	AV *av = (AV *)SvRV (arg [0]);
2727	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	3012	SV *cb_cv = s_get_cv_croak (arg [1]);
2728		3013
2729	av_push (av, SvREFCNT_inc_NN (cb_cv));	3014	av_push (av, SvREFCNT_inc_NN (cb_cv));
2730		3015
2731	if (SvIVX (AvARRAY (av)[0]) > 0)	3016	if (SvIVX (AvARRAY (av)[0]) > 0)
2732	coro_semaphore_adjust (aTHX_ av, 0);	3017	coro_semaphore_adjust (aTHX_ av, 0);
…		…
2792	{	3077	{
2793	AV *av = (AV *)SvRV (arg [0]);	3078	AV *av = (AV *)SvRV (arg [0]);
2794		3079
2795	if (items >= 2)	3080	if (items >= 2)
2796	{	3081	{
2797	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	3082	SV *cb_cv = s_get_cv_croak (arg [1]);
2798	av_push (av, SvREFCNT_inc_NN (cb_cv));	3083	av_push (av, SvREFCNT_inc_NN (cb_cv));
2799		3084
2800	if (SvIVX (AvARRAY (av)[0]))	3085	if (SvIVX (AvARRAY (av)[0]))
2801	coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */	3086	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
2802		3087
2803	frame->prepare = prepare_nop;	3088	frame->prepare = prepare_nop;
2804	frame->check = slf_check_nop;	3089	frame->check = slf_check_nop;
2805	}	3090	}
2806	else if (SvIVX (AvARRAY (av)[0]))	3091	else if (SvIVX (AvARRAY (av)[0]))
…		…
2837		3122
2838	static void	3123	static void
2839	coro_aio_callback (pTHX_ CV *cv)	3124	coro_aio_callback (pTHX_ CV *cv)
2840	{	3125	{
2841	dXSARGS;	3126	dXSARGS;
2842	AV *state = (AV *)GENSUB_ARG;	3127	AV *state = (AV *)S_GENSUB_ARG;
2843	SV *coro = av_pop (state);	3128	SV *coro = av_pop (state);
2844	SV *data_sv = newSV (sizeof (struct io_state));	3129	SV *data_sv = newSV (sizeof (struct io_state));
2845		3130
2846	av_extend (state, items - 1);	3131	av_extend (state, items - 1);
2847		3132
…		…
2961		3246
2962	for (i = 0; i < items; ++i)	3247	for (i = 0; i < items; ++i)
2963	PUSHs (arg [i]);	3248	PUSHs (arg [i]);
2964		3249
2965	/* now push the callback closure */	3250	/* now push the callback closure */
2966	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	3251	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2967		3252
2968	/* now call the AIO function - we assume our request is uncancelable */	3253	/* now call the AIO function - we assume our request is uncancelable */
2969	PUTBACK;	3254	PUTBACK;
2970	call_sv ((SV *)req, G_VOID | G_DISCARD);	3255	call_sv ((SV *)req, G_VOID | G_DISCARD);
2971	}	3256	}
2972		3257
2973	/* now that the requets is going, we loop toll we have a result */	3258	/* now that the request is going, we loop till we have a result */
2974	frame->data = (void *)state;	3259	frame->data = (void *)state;
2975	frame->prepare = prepare_schedule;	3260	frame->prepare = prepare_schedule;
2976	frame->check = slf_check_aio_req;	3261	frame->check = slf_check_aio_req;
2977	}	3262	}
2978		3263
…		…
2989	/*****************************************************************************/	3274	/*****************************************************************************/
2990		3275
2991	#if CORO_CLONE	3276	#if CORO_CLONE
2992	# include "clone.c"	3277	# include "clone.c"
2993	#endif	3278	#endif
		3279
		3280	/*****************************************************************************/
		3281
		3282	static SV *
		3283	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		3284	{
		3285	SV *coro_sv;
		3286	struct coro *coro;
		3287	MAGIC *mg;
		3288	HV *hv;
		3289	SV *cb;
		3290	int i;
		3291
		3292	if (argc > 0)
		3293	{
		3294	cb = s_get_cv_croak (argv [0]);
		3295
		3296	if (!is_coro)
		3297	{
		3298	if (CvISXSUB (cb))
		3299	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3300
		3301	if (!CvROOT (cb))
		3302	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3303	}
		3304	}
		3305
		3306	Newz (0, coro, 1, struct coro);
		3307	coro->args = newAV ();
		3308	coro->flags = CF_NEW;
		3309
		3310	if (coro_first) coro_first->prev = coro;
		3311	coro->next = coro_first;
		3312	coro_first = coro;
		3313
		3314	coro->hv = hv = newHV ();
		3315	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3316	mg->mg_flags |= MGf_DUP;
		3317	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3318
		3319	if (argc > 0)
		3320	{
		3321	av_extend (coro->args, argc + is_coro - 1);
		3322
		3323	if (is_coro)
		3324	{
		3325	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3326	cb = (SV *)cv_coro_run;
		3327	}
		3328
		3329	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3330
		3331	for (i = 1; i < argc; i++)
		3332	av_push (coro->args, newSVsv (argv [i]));
		3333	}
		3334
		3335	return coro_sv;
		3336	}
2994		3337
2995	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3338	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2996		3339
2997	PROTOTYPES: DISABLE	3340	PROTOTYPES: DISABLE
2998		3341
…		…
3051	coroapi.prepare_nop = prepare_nop;	3394	coroapi.prepare_nop = prepare_nop;
3052	coroapi.prepare_schedule = prepare_schedule;	3395	coroapi.prepare_schedule = prepare_schedule;
3053	coroapi.prepare_cede = prepare_cede;	3396	coroapi.prepare_cede = prepare_cede;
3054	coroapi.prepare_cede_notself = prepare_cede_notself;	3397	coroapi.prepare_cede_notself = prepare_cede_notself;
3055		3398
3056	{	3399	time_init (aTHX);
3057	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
3058
3059	if (!svp) croak ("Time::HiRes is required");
3060	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
3061
3062	nvtime = INT2PTR (double (*)(), SvIV (*svp));
3063
3064	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
3065	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
3066	}
3067		3400
3068	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));	3401	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
3069	}	3402	}
3070		3403
3071	SV *	3404	SV *
3072	new (char *klass, ...)	3405	new (SV *klass, ...)
3073	ALIAS:	3406	ALIAS:
3074	Coro::new = 1	3407	Coro::new = 1
3075	CODE:	3408	CODE:
3076	{	3409	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
3077	struct coro *coro;	3410	OUTPUT:
3078	MAGIC *mg;
3079	HV *hv;
3080	CV *cb;
3081	int i;
3082
3083	if (items > 1)
3084	{
3085	cb = coro_sv_2cv (aTHX_ ST (1));
3086
3087	if (!ix)
3088	{
3089	if (CvISXSUB (cb))
3090	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
3091
3092	if (!CvROOT (cb))
3093	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
3094	}
3095	}
3096
3097	Newz (0, coro, 1, struct coro);
3098	coro->args = newAV ();
3099	coro->flags = CF_NEW;
3100
3101	if (coro_first) coro_first->prev = coro;
3102	coro->next = coro_first;
3103	coro_first = coro;
3104
3105	coro->hv = hv = newHV ();
3106	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
3107	mg->mg_flags |= MGf_DUP;
3108	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
3109
3110	if (items > 1)
3111	{
3112	av_extend (coro->args, items - 1 + ix - 1);
3113
3114	if (ix)
3115	{
3116	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
3117	cb = cv_coro_run;
3118	}
3119
3120	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
3121
3122	for (i = 2; i < items; i++)
3123	av_push (coro->args, newSVsv (ST (i)));
3124	}
3125	}
3126	OUTPUT:
3127	RETVAL	3411	RETVAL
3128		3412
3129	void	3413	void
3130	transfer (...)	3414	transfer (...)
3131	PROTOTYPE: $$	3415	PROTOTYPE: $$
3132	CODE:	3416	CODE:
3133	CORO_EXECUTE_SLF_XS (slf_init_transfer);	3417	CORO_EXECUTE_SLF_XS (slf_init_transfer);
3134
3135	bool
3136	_destroy (SV *coro_sv)
3137	CODE:
3138	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
3139	OUTPUT:
3140	RETVAL
3141		3418
3142	void	3419	void
3143	_exit (int code)	3420	_exit (int code)
3144	PROTOTYPE: $	3421	PROTOTYPE: $
3145	CODE:	3422	CODE:
…		…
3221	CODE:	3498	CODE:
3222	{	3499	{
3223	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3500	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
3224	{	3501	{
3225	struct coro *current = SvSTATE_current;	3502	struct coro *current = SvSTATE_current;
		3503	struct CoroSLF slf_save;
3226		3504
3227	if (current != coro)	3505	if (current != coro)
3228	{	3506	{
3229	PUTBACK;	3507	PUTBACK;
3230	save_perl (aTHX_ current);	3508	save_perl (aTHX_ current);
3231	load_perl (aTHX_ coro);	3509	load_perl (aTHX_ coro);
		3510	/* the coro is most likely in an active SLF call.
		3511	* while not strictly required (the code we execute is
		3512	* not allowed to call any SLF functions), it's cleaner
		3513	* to reinitialise the slf_frame and restore it later.
		3514	* This might one day allow us to actually do SLF calls
		3515	* from code executed here.
		3516	*/
		3517	slf_save = slf_frame;
		3518	slf_frame.prepare = 0;
3232	SPAGAIN;	3519	SPAGAIN;
3233	}	3520	}
3234		3521
3235	PUSHSTACK;	3522	PUSHSTACK;
3236		3523
…		…
3246	SPAGAIN;	3533	SPAGAIN;
3247		3534
3248	if (current != coro)	3535	if (current != coro)
3249	{	3536	{
3250	PUTBACK;	3537	PUTBACK;
		3538	slf_frame = slf_save;
3251	save_perl (aTHX_ coro);	3539	save_perl (aTHX_ coro);
3252	load_perl (aTHX_ current);	3540	load_perl (aTHX_ current);
3253	SPAGAIN;	3541	SPAGAIN;
3254	}	3542	}
3255	}	3543	}
…		…
3260	PROTOTYPE: $	3548	PROTOTYPE: $
3261	ALIAS:	3549	ALIAS:
3262	is_ready = CF_READY	3550	is_ready = CF_READY
3263	is_running = CF_RUNNING	3551	is_running = CF_RUNNING
3264	is_new = CF_NEW	3552	is_new = CF_NEW
3265	is_destroyed = CF_DESTROYED	3553	is_destroyed = CF_ZOMBIE
		3554	is_zombie = CF_ZOMBIE
3266	is_suspended = CF_SUSPENDED	3555	is_suspended = CF_SUSPENDED
3267	CODE:	3556	CODE:
3268	RETVAL = boolSV (coro->flags & ix);	3557	RETVAL = boolSV (coro->flags & ix);
3269	OUTPUT:	3558	OUTPUT:
3270	RETVAL	3559	RETVAL
3271		3560
3272	void	3561	void
3273	throw (Coro::State self, SV *throw = &PL_sv_undef)	3562	throw (Coro::State self, SV *exception = &PL_sv_undef)
3274	PROTOTYPE: $;$	3563	PROTOTYPE: $;$
3275	CODE:	3564	CODE:
3276	{	3565	{
3277	struct coro *current = SvSTATE_current;	3566	struct coro *current = SvSTATE_current;
3278	SV **throwp = self == current ? &CORO_THROW : &self->except;	3567	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3279	SvREFCNT_dec (*throwp);	3568	SvREFCNT_dec (*exceptionp);
3280	SvGETMAGIC (throw);	3569	SvGETMAGIC (exception);
3281	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3570	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3282	}	3571	}
3283		3572
3284	void	3573	void
3285	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3574	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3286	PROTOTYPE: $;$	3575	PROTOTYPE: $;$
…		…
3341		3630
3342	void	3631	void
3343	cancel (Coro::State self)	3632	cancel (Coro::State self)
3344	CODE:	3633	CODE:
3345	coro_state_destroy (aTHX_ self);	3634	coro_state_destroy (aTHX_ self);
3346	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
3347
3348		3635
3349	SV *	3636	SV *
3350	enable_times (int enabled = enable_times)	3637	enable_times (int enabled = enable_times)
3351	CODE:	3638	CODE:
3352	{	3639	{
…		…
3381		3668
3382	if (expect_false (current == self))	3669	if (expect_false (current == self))
3383	coro_times_sub (SvSTATE (coro_current));	3670	coro_times_sub (SvSTATE (coro_current));
3384	}	3671	}
3385		3672
		3673	void
		3674	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3675	CODE:
		3676	{
		3677	struct coro *current = SvSTATE_current;
		3678
		3679	if (current == coro)
		3680	SWAP_SVS (current);
		3681
		3682	if (!coro->swap_sv)
		3683	coro->swap_sv = newAV ();
		3684
		3685	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3686	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3687
		3688	if (current == coro)
		3689	SWAP_SVS (current);
		3690	}
		3691
		3692
3386	MODULE = Coro::State PACKAGE = Coro	3693	MODULE = Coro::State PACKAGE = Coro
3387		3694
3388	BOOT:	3695	BOOT:
3389	{	3696	{
3390	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3697	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3391	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3698	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3392	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);	3699	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3393	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3394	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3700	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3395	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	3701	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3396	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);	3702	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3397	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);	3703	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
3398	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);	3704	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3399		3705
3400	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3706	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3401	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3707	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3402	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3708	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3403	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3709	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3404		3710
3405	coro_stash = gv_stashpv ("Coro", TRUE);	3711	coro_stash = gv_stashpv ("Coro", TRUE);
3406		3712
3407	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));	3713	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3408	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));	3714	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3409	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));	3715	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
…		…
3427	sv_setiv (sv, (IV)&coroapi);	3733	sv_setiv (sv, (IV)&coroapi);
3428	SvREADONLY_on (sv);	3734	SvREADONLY_on (sv);
3429	}	3735	}
3430	}	3736	}
3431		3737
		3738	SV *
		3739	async (...)
		3740	PROTOTYPE: &@
		3741	CODE:
		3742	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3743	api_ready (aTHX_ RETVAL);
		3744	OUTPUT:
		3745	RETVAL
		3746
		3747	void
		3748	_destroy (Coro::State coro)
		3749	CODE:
		3750	/* used by the manager thread */
		3751	coro_state_destroy (aTHX_ coro);
		3752
		3753	void
		3754	on_destroy (Coro::State coro, SV *cb)
		3755	CODE:
		3756	coro_push_on_destroy (aTHX_ coro, newSVsv (cb));
		3757
		3758	void
		3759	join (...)
		3760	CODE:
		3761	CORO_EXECUTE_SLF_XS (slf_init_join);
		3762
3432	void	3763	void
3433	terminate (...)	3764	terminate (...)
3434	CODE:	3765	CODE:
3435	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3766	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3767
		3768	void
		3769	cancel (...)
		3770	CODE:
		3771	CORO_EXECUTE_SLF_XS (slf_init_cancel);
		3772
		3773	int
		3774	safe_cancel (Coro::State self, ...)
		3775	C_ARGS: aTHX_ self, &ST (1), items - 1
3436		3776
3437	void	3777	void
3438	schedule (...)	3778	schedule (...)
3439	CODE:	3779	CODE:
3440	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3780	CORO_EXECUTE_SLF_XS (slf_init_schedule);
…		…
3470	_set_readyhook (SV *hook)	3810	_set_readyhook (SV *hook)
3471	PROTOTYPE: $	3811	PROTOTYPE: $
3472	CODE:	3812	CODE:
3473	SvREFCNT_dec (coro_readyhook);	3813	SvREFCNT_dec (coro_readyhook);
3474	SvGETMAGIC (hook);	3814	SvGETMAGIC (hook);
		3815	if (SvOK (hook))
		3816	{
3475	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3817	coro_readyhook = newSVsv (hook);
		3818	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3819	}
		3820	else
		3821	{
		3822	coro_readyhook = 0;
		3823	CORO_READYHOOK = 0;
		3824	}
3476		3825
3477	int	3826	int
3478	prio (Coro::State coro, int newprio = 0)	3827	prio (Coro::State coro, int newprio = 0)
3479	PROTOTYPE: $;$	3828	PROTOTYPE: $;$
3480	ALIAS:	3829	ALIAS:
…		…
3544	for (i = 1; i < items; ++i)	3893	for (i = 1; i < items; ++i)
3545	av_push (av, SvREFCNT_inc_NN (ST (i)));	3894	av_push (av, SvREFCNT_inc_NN (ST (i)));
3546		3895
3547	if ((SV *)hv == &PL_sv_undef)	3896	if ((SV *)hv == &PL_sv_undef)
3548	{	3897	{
3549	PUSHMARK (SP);	3898	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3550	EXTEND (SP, 2);
3551	PUSHs (sv_Coro);
3552	PUSHs ((SV *)cv_pool_handler);
3553	PUTBACK;
3554	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3555	SPAGAIN;
3556
3557	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3899	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3900	SvREFCNT_dec (sv);
3558	}	3901	}
3559		3902
3560	{	3903	{
3561	struct coro *coro = SvSTATE_hv (hv);	3904	struct coro *coro = SvSTATE_hv (hv);
3562		3905
…		…
3596	CODE:	3939	CODE:
3597	{	3940	{
3598	struct coro *coro = SvSTATE_current;	3941	struct coro *coro = SvSTATE_current;
3599	AV **avp = ix ? &coro->on_leave : &coro->on_enter;	3942	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
3600		3943
3601	block = (SV *)coro_sv_2cv (aTHX_ block);	3944	block = s_get_cv_croak (block);
3602		3945
3603	if (!*avp)	3946	if (!*avp)
3604	*avp = newAV ();	3947	*avp = newAV ();
3605		3948
3606	av_push (*avp, SvREFCNT_inc (block));	3949	av_push (*avp, SvREFCNT_inc (block));
…		…
3806		4149
3807	void	4150	void
3808	_register (char *target, char *proto, SV *req)	4151	_register (char *target, char *proto, SV *req)
3809	CODE:	4152	CODE:
3810	{	4153	{
3811	CV *req_cv = coro_sv_2cv (aTHX_ req);	4154	SV *req_cv = s_get_cv_croak (req);
3812	/* newXSproto doesn't return the CV on 5.8 */	4155	/* newXSproto doesn't return the CV on 5.8 */
3813	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	4156	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3814	sv_setpv ((SV *)slf_cv, proto);	4157	sv_setpv ((SV *)slf_cv, proto);
3815	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	4158	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3816	}	4159	}
3817		4160
		4161	MODULE = Coro::State PACKAGE = Coro::Select
		4162
		4163	void
		4164	patch_pp_sselect ()
		4165	CODE:
		4166	if (!coro_old_pp_sselect)
		4167	{
		4168	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		4169	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		4170	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		4171	}
		4172
		4173	void
		4174	unpatch_pp_sselect ()
		4175	CODE:
		4176	if (coro_old_pp_sselect)
		4177	{
		4178	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		4179	coro_old_pp_sselect = 0;
		4180	}
		4181

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