ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.314 by root, Thu Nov 20 03:24:39 2008 UTC vs.
Revision 1.368 by root, Thu Aug 13 02:35:41 2009 UTC

…		…
6	#include "EXTERN.h"	6	#include "EXTERN.h"
7	#include "perl.h"	7	#include "perl.h"
8	#include "XSUB.h"	8	#include "XSUB.h"
9	#include "perliol.h"	9	#include "perliol.h"
10		10
11	#include "patchlevel.h"	11	#include "schmorp.h"
12		12
13	#include <stdio.h>	13	#include <stdio.h>
14	#include <errno.h>	14	#include <errno.h>
15	#include <assert.h>	15	#include <assert.h>
16		16
…		…
51	#endif	51	#endif
52		52
53	/* the maximum number of idle cctx that will be pooled */	53	/* the maximum number of idle cctx that will be pooled */
54	static int cctx_max_idle = 4;	54	static int cctx_max_idle = 4;
55		55
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
107	/* 5.8.7 */
108	#ifndef SvRV_set
109	# define SvRV_set(s,v) SvRV(s) = (v)
110	#endif
111
112	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64	56	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
113	# undef CORO_STACKGUARD	57	# undef CORO_STACKGUARD
114	#endif	58	#endif
115		59
116	#ifndef CORO_STACKGUARD	60	#ifndef CORO_STACKGUARD
…		…
130	#else	74	#else
131	# define dSTACKLEVEL volatile void *stacklevel	75	# define dSTACKLEVEL volatile void *stacklevel
132	# define STACKLEVEL ((void *)&stacklevel)	76	# define STACKLEVEL ((void *)&stacklevel)
133	#endif	77	#endif
134		78
135	#define IN_DESTRUCT (PL_main_cv == Nullcv)	79	#define IN_DESTRUCT PL_dirty
136		80
137	#if __GNUC__ >= 3	81	#if __GNUC__ >= 3
138	# define attribute(x) __attribute__(x)	82	# define attribute(x) __attribute__(x)
139	# define expect(expr,value) __builtin_expect ((expr),(value))	83	# define expect(expr,value) __builtin_expect ((expr), (value))
140	# define INLINE static inline	84	# define INLINE static inline
141	#else	85	#else
142	# define attribute(x)	86	# define attribute(x)
143	# define expect(expr,value) (expr)	87	# define expect(expr,value) (expr)
144	# define INLINE static	88	# define INLINE static
…		…
156	# if CORO_PTHREAD	100	# if CORO_PTHREAD
157	static void *coro_thx;	101	static void *coro_thx;
158	# endif	102	# endif
159	#endif	103	#endif
160		104
		105	#ifdef __linux
		106	# include <time.h> /* for timespec */
		107	# include <syscall.h> /* for SYS_* */
		108	# ifdef SYS_clock_gettime
		109	# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		110	# define CORO_CLOCK_MONOTONIC 1
		111	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
		112	# endif
		113	#endif
		114
161	static double (*nvtime)(); /* so why doesn't it take void? */	115	static double (*nvtime)(); /* so why doesn't it take void? */
		116	static void (*u2time)(pTHX_ UV ret[2]);
162		117
163	/* we hijack an hopefully unused CV flag for our purposes */	118	/* we hijack an hopefully unused CV flag for our purposes */
164	#define CVf_SLF 0x4000	119	#define CVf_SLF 0x4000
165	static OP *pp_slf (pTHX);	120	static OP *pp_slf (pTHX);
166		121
…		…
170	static AV *main_mainstack; /* used to differentiate between $main and others */	125	static AV *main_mainstack; /* used to differentiate between $main and others */
171	static JMPENV *main_top_env;	126	static JMPENV *main_top_env;
172	static HV *coro_state_stash, *coro_stash;	127	static HV *coro_state_stash, *coro_stash;
173	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	128	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
174		129
		130	static AV *av_destroy; /* destruction queue */
		131	static SV *sv_manager; /* the manager coro */
		132	static SV *sv_idle; /* $Coro::idle */
		133
175	static GV *irsgv; /* $/ */	134	static GV *irsgv; /* $/ */
176	static GV *stdoutgv; /* *STDOUT */	135	static GV *stdoutgv; /* *STDOUT */
177	static SV *rv_diehook;	136	static SV *rv_diehook;
178	static SV *rv_warnhook;	137	static SV *rv_warnhook;
179	static HV *hv_sig; /* %SIG */	138	static HV *hv_sig; /* %SIG */
180		139
181	/* async_pool helper stuff */	140	/* async_pool helper stuff */
182	static SV *sv_pool_rss;	141	static SV *sv_pool_rss;
183	static SV *sv_pool_size;	142	static SV *sv_pool_size;
184	static SV *sv_async_pool_idle;	143	static SV *sv_async_pool_idle; /* description string */
185	static AV *av_async_pool;	144	static AV *av_async_pool; /* idle pool */
186	static SV *sv_Coro;	145	static SV *sv_Coro; /* class string */
187	static CV *cv_pool_handler;	146	static CV *cv_pool_handler;
188	static CV *cv_coro_new;	147	static CV *cv_coro_state_new;
189		148
190	/* Coro::AnyEvent */	149	/* Coro::AnyEvent */
191	static SV *sv_activity;	150	static SV *sv_activity;
		151
		152	/* enable processtime/realtime profiling */
		153	static char enable_times;
		154	typedef U32 coro_ts[2];
		155	static coro_ts time_real, time_cpu;
		156	static char times_valid;
192		157
193	static struct coro_cctx *cctx_first;	158	static struct coro_cctx *cctx_first;
194	static int cctx_count, cctx_idle;	159	static int cctx_count, cctx_idle;
195		160
196	enum {	161	enum {
…		…
222	int valgrind_id;	187	int valgrind_id;
223	#endif	188	#endif
224	unsigned char flags;	189	unsigned char flags;
225	} coro_cctx;	190	} coro_cctx;
226		191
		192	coro_cctx *cctx_current; /* the currently running cctx */
		193
		194	/*****************************************************************************/
		195
227	enum {	196	enum {
228	CF_RUNNING = 0x0001, /* coroutine is running */	197	CF_RUNNING = 0x0001, /* coroutine is running */
229	CF_READY = 0x0002, /* coroutine is ready */	198	CF_READY = 0x0002, /* coroutine is ready */
230	CF_NEW = 0x0004, /* has never been switched to */	199	CF_NEW = 0x0004, /* has never been switched to */
231	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	200	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		201	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
232	};	202	};
233		203
234	/* the structure where most of the perl state is stored, overlaid on the cxstack */	204	/* the structure where most of the perl state is stored, overlaid on the cxstack */
235	typedef struct	205	typedef struct
236	{	206	{
237	SV *defsv;	207	SV *defsv;
238	AV *defav;	208	AV *defav;
239	SV *errsv;	209	SV *errsv;
240	SV *irsgv;	210	SV *irsgv;
		211	HV *hinthv;
241	#define VAR(name,type) type name;	212	#define VAR(name,type) type name;
242	# include "state.h"	213	# include "state.h"
243	#undef VAR	214	#undef VAR
244	} perl_slots;	215	} perl_slots;
245		216
…		…
247		218
248	/* this is a structure representing a perl-level coroutine */	219	/* this is a structure representing a perl-level coroutine */
249	struct coro {	220	struct coro {
250	/* the C coroutine allocated to this perl coroutine, if any */	221	/* the C coroutine allocated to this perl coroutine, if any */
251	coro_cctx *cctx;	222	coro_cctx *cctx;
		223
		224	/* ready queue */
		225	struct coro *next_ready;
252		226
253	/* state data */	227	/* state data */
254	struct CoroSLF slf_frame; /* saved slf frame */	228	struct CoroSLF slf_frame; /* saved slf frame */
255	AV *mainstack;	229	AV *mainstack;
256	perl_slots *slot; /* basically the saved sp */	230	perl_slots *slot; /* basically the saved sp */
…		…
273	/* async_pool */	247	/* async_pool */
274	SV *saved_deffh;	248	SV *saved_deffh;
275	SV *invoke_cb;	249	SV *invoke_cb;
276	AV *invoke_av;	250	AV *invoke_av;
277		251
		252	/* on_enter/on_leave */
		253	AV *on_enter;
		254	AV *on_leave;
		255
		256	/* times */
		257	coro_ts t_cpu, t_real;
		258
278	/* linked list */	259	/* linked list */
279	struct coro *next, *prev;	260	struct coro *next, *prev;
280	};	261	};
281		262
282	typedef struct coro *Coro__State;	263	typedef struct coro *Coro__State;
…		…
287	/* the mainr easonw e don't support windows process emulation */	268	/* the mainr easonw e don't support windows process emulation */
288	static struct CoroSLF slf_frame; /* the current slf frame */	269	static struct CoroSLF slf_frame; /* the current slf frame */
289		270
290	/** Coro ********************************************************************/	271	/** Coro ********************************************************************/
291		272
292	#define PRIO_MAX 3	273	#define CORO_PRIO_MAX 3
293	#define PRIO_HIGH 1	274	#define CORO_PRIO_HIGH 1
294	#define PRIO_NORMAL 0	275	#define CORO_PRIO_NORMAL 0
295	#define PRIO_LOW -1	276	#define CORO_PRIO_LOW -1
296	#define PRIO_IDLE -3	277	#define CORO_PRIO_IDLE -3
297	#define PRIO_MIN -4	278	#define CORO_PRIO_MIN -4
298		279
299	/* for Coro.pm */	280	/* for Coro.pm */
300	static SV *coro_current;	281	static SV *coro_current;
301	static SV *coro_readyhook;	282	static SV *coro_readyhook;
302	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	283	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
303	static CV *cv_coro_run, *cv_coro_terminate;	284	static CV *cv_coro_run, *cv_coro_terminate;
304	static struct coro *coro_first;	285	static struct coro *coro_first;
305	#define coro_nready coroapi.nready	286	#define coro_nready coroapi.nready
		287
		288	/** Coro::Select ************************************************************/
		289
		290	static OP *(*coro_old_pp_sselect) (pTHX);
		291	static SV *coro_select_select;
		292
		293	/* horrible hack, but if it works... */
		294	static OP *
		295	coro_pp_sselect (aTHX)
		296	{
		297	dSP;
		298	PUSHMARK (SP - 4); /* fake argument list */
		299	XPUSHs (coro_select_select);
		300	PUTBACK;
		301
		302	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		303	PL_op->op_flags |= OPf_STACKED;
		304	PL_op->op_private = 0;
		305	return PL_ppaddr [OP_ENTERSUB](aTHX);
		306	}
306		307
307	/** lowlevel stuff **********************************************************/	308	/** lowlevel stuff **********************************************************/
308		309
309	static SV *	310	static SV *
310	coro_get_sv (pTHX_ const char *name, int create)	311	coro_get_sv (pTHX_ const char *name, int create)
…		…
334	get_hv (name, create);	335	get_hv (name, create);
335	#endif	336	#endif
336	return get_hv (name, create);	337	return get_hv (name, create);
337	}	338	}
338		339
339	/* may croak */	340	INLINE void
340	INLINE CV *	341	coro_times_update ()
341	coro_sv_2cv (pTHX_ SV *sv)
342	{	342	{
		343	#ifdef coro_clock_gettime
		344	struct timespec ts;
		345
		346	ts.tv_sec = ts.tv_nsec = 0;
		347	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		348	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
		349
		350	ts.tv_sec = ts.tv_nsec = 0;
		351	coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
		352	time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
		353	#else
		354	dTHX;
		355	UV tv[2];
		356
		357	u2time (aTHX_ tv);
		358	time_real [0] = tv [0];
		359	time_real [1] = tv [1] * 1000;
		360	#endif
		361	}
		362
		363	INLINE void
		364	coro_times_add (struct coro *c)
		365	{
		366	c->t_real [1] += time_real [1];
		367	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
		368	c->t_real [0] += time_real [0];
		369
		370	c->t_cpu [1] += time_cpu [1];
		371	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
		372	c->t_cpu [0] += time_cpu [0];
		373	}
		374
		375	INLINE void
		376	coro_times_sub (struct coro *c)
		377	{
		378	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
		379	c->t_real [1] -= time_real [1];
		380	c->t_real [0] -= time_real [0];
		381
		382	if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
		383	c->t_cpu [1] -= time_cpu [1];
		384	c->t_cpu [0] -= time_cpu [0];
		385	}
		386
		387	/*****************************************************************************/
		388	/* magic glue */
		389
		390	#define CORO_MAGIC_type_cv 26
		391	#define CORO_MAGIC_type_state PERL_MAGIC_ext
		392
		393	#define CORO_MAGIC_NN(sv, type) \
		394	(expect_true (SvMAGIC (sv)->mg_type == type) \
		395	? SvMAGIC (sv) \
		396	: mg_find (sv, type))
		397
		398	#define CORO_MAGIC(sv, type) \
		399	(expect_true (SvMAGIC (sv)) \
		400	? CORO_MAGIC_NN (sv, type) \
		401	: 0)
		402
		403	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		404	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
		405
		406	INLINE struct coro *
		407	SvSTATE_ (pTHX_ SV *coro)
		408	{
343	HV *st;	409	HV *stash;
344	GV *gvp;	410	MAGIC *mg;
345	return sv_2cv (sv, &st, &gvp, 0);	411
		412	if (SvROK (coro))
		413	coro = SvRV (coro);
		414
		415	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		416	croak ("Coro::State object required");
		417
		418	stash = SvSTASH (coro);
		419	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		420	{
		421	/* very slow, but rare, check */
		422	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		423	croak ("Coro::State object required");
		424	}
		425
		426	mg = CORO_MAGIC_state (coro);
		427	return (struct coro *)mg->mg_ptr;
346	}	428	}
		429
		430	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		431
		432	/* faster than SvSTATE, but expects a coroutine hv */
		433	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		434	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
		435
		436	/*****************************************************************************/
		437	/* padlist management and caching */
347		438
348	static AV *	439	static AV *
349	coro_clone_padlist (pTHX_ CV *cv)	440	coro_derive_padlist (pTHX_ CV *cv)
350	{	441	{
351	AV *padlist = CvPADLIST (cv);	442	AV *padlist = CvPADLIST (cv);
352	AV *newpadlist, *newpad;	443	AV *newpadlist, *newpad;
353		444
354	newpadlist = newAV ();	445	newpadlist = newAV ();
…		…
359	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	450	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
360	#endif	451	#endif
361	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	452	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
362	--AvFILLp (padlist);	453	--AvFILLp (padlist);
363		454
364	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));	455	av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
365	av_store (newpadlist, 1, (SV *)newpad);	456	av_store (newpadlist, 1, (SV *)newpad);
366		457
367	return newpadlist;	458	return newpadlist;
368	}	459	}
369		460
370	static void	461	static void
371	free_padlist (pTHX_ AV *padlist)	462	free_padlist (pTHX_ AV *padlist)
372	{	463	{
373	/* may be during global destruction */	464	/* may be during global destruction */
374	if (SvREFCNT (padlist))	465	if (!IN_DESTRUCT)
375	{	466	{
376	I32 i = AvFILLp (padlist);	467	I32 i = AvFILLp (padlist);
377	while (i >= 0)	468
		469	while (i > 0) /* special-case index 0 */
378	{	470	{
379	SV **svp = av_fetch (padlist, i--, FALSE);	471	/* we try to be extra-careful here */
380	if (svp)	472	AV *av = (AV *)AvARRAY (padlist)[i--];
381	{	473	I32 j = AvFILLp (av);
382	SV *sv;	474
383	while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))	475	while (j >= 0)
		476	SvREFCNT_dec (AvARRAY (av)[j--]);
		477
		478	AvFILLp (av) = -1;
384	SvREFCNT_dec (sv);	479	SvREFCNT_dec (av);
385
386	SvREFCNT_dec (*svp);
387	}
388	}	480	}
389		481
		482	SvREFCNT_dec (AvARRAY (padlist)[0]);
		483
		484	AvFILLp (padlist) = -1;
390	SvREFCNT_dec ((SV*)padlist);	485	SvREFCNT_dec ((SV*)padlist);
391	}	486	}
392	}	487	}
393		488
394	static int	489	static int
395	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)	490	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
396	{	491	{
397	AV *padlist;	492	AV *padlist;
398	AV *av = (AV *)mg->mg_obj;	493	AV *av = (AV *)mg->mg_obj;
		494
		495	/* perl manages to free our internal AV and _then_ call us */
		496	if (IN_DESTRUCT)
		497	return 0;
399		498
400	/* casting is fun. */	499	/* casting is fun. */
401	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	500	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
402	free_padlist (aTHX_ padlist);	501	free_padlist (aTHX_ padlist);
403		502
404	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	503	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
405		504
406	return 0;	505	return 0;
407	}	506	}
408
409	#define CORO_MAGIC_type_cv 26
410	#define CORO_MAGIC_type_state PERL_MAGIC_ext
411		507
412	static MGVTBL coro_cv_vtbl = {	508	static MGVTBL coro_cv_vtbl = {
413	0, 0, 0, 0,	509	0, 0, 0, 0,
414	coro_cv_free	510	coro_cv_free
415	};	511	};
416
417	#define CORO_MAGIC_NN(sv, type) \
418	(expect_true (SvMAGIC (sv)->mg_type == type) \
419	? SvMAGIC (sv) \
420	: mg_find (sv, type))
421
422	#define CORO_MAGIC(sv, type) \
423	(expect_true (SvMAGIC (sv)) \
424	? CORO_MAGIC_NN (sv, type) \
425	: 0)
426
427	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
428	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
429
430	INLINE struct coro *
431	SvSTATE_ (pTHX_ SV *coro)
432	{
433	HV *stash;
434	MAGIC *mg;
435
436	if (SvROK (coro))
437	coro = SvRV (coro);
438
439	if (expect_false (SvTYPE (coro) != SVt_PVHV))
440	croak ("Coro::State object required");
441
442	stash = SvSTASH (coro);
443	if (expect_false (stash != coro_stash && stash != coro_state_stash))
444	{
445	/* very slow, but rare, check */
446	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
447	croak ("Coro::State object required");
448	}
449
450	mg = CORO_MAGIC_state (coro);
451	return (struct coro *)mg->mg_ptr;
452	}
453
454	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
455
456	/* faster than SvSTATE, but expects a coroutine hv */
457	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
458	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
459		512
460	/* the next two functions merely cache the padlists */	513	/* the next two functions merely cache the padlists */
461	static void	514	static void
462	get_padlist (pTHX_ CV *cv)	515	get_padlist (pTHX_ CV *cv)
463	{	516	{
…		…
474	CV *cp = Perl_cv_clone (aTHX_ cv);	527	CV *cp = Perl_cv_clone (aTHX_ cv);
475	CvPADLIST (cv) = CvPADLIST (cp);	528	CvPADLIST (cv) = CvPADLIST (cp);
476	CvPADLIST (cp) = 0;	529	CvPADLIST (cp) = 0;
477	SvREFCNT_dec (cp);	530	SvREFCNT_dec (cp);
478	#else	531	#else
479	CvPADLIST (cv) = coro_clone_padlist (aTHX_ cv);	532	CvPADLIST (cv) = coro_derive_padlist (aTHX_ cv);
480	#endif	533	#endif
481	}	534	}
482	}	535	}
483		536
484	static void	537	static void
…		…
491	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);	544	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
492		545
493	av = (AV *)mg->mg_obj;	546	av = (AV *)mg->mg_obj;
494		547
495	if (expect_false (AvFILLp (av) >= AvMAX (av)))	548	if (expect_false (AvFILLp (av) >= AvMAX (av)))
496	av_extend (av, AvMAX (av) + 1);	549	av_extend (av, AvFILLp (av) + 1);
497		550
498	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	551	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
499	}	552	}
500		553
501	/** load & save, init *******************************************************/	554	/** load & save, init *******************************************************/
		555
		556	static void
		557	on_enterleave_call (pTHX_ SV *cb);
502		558
503	static void	559	static void
504	load_perl (pTHX_ Coro__State c)	560	load_perl (pTHX_ Coro__State c)
505	{	561	{
506	perl_slots *slot = c->slot;	562	perl_slots *slot = c->slot;
507	c->slot = 0;	563	c->slot = 0;
508		564
509	PL_mainstack = c->mainstack;	565	PL_mainstack = c->mainstack;
510		566
511	GvSV (PL_defgv) = slot->defsv;	567	GvSV (PL_defgv) = slot->defsv;
512	GvAV (PL_defgv) = slot->defav;	568	GvAV (PL_defgv) = slot->defav;
513	GvSV (PL_errgv) = slot->errsv;	569	GvSV (PL_errgv) = slot->errsv;
514	GvSV (irsgv) = slot->irsgv;	570	GvSV (irsgv) = slot->irsgv;
		571	GvHV (PL_hintgv) = slot->hinthv;
515		572
516	#define VAR(name,type) PL_ ## name = slot->name;	573	#define VAR(name,type) PL_ ## name = slot->name;
517	# include "state.h"	574	# include "state.h"
518	#undef VAR	575	#undef VAR
519		576
…		…
533	PUTBACK;	590	PUTBACK;
534	}	591	}
535		592
536	slf_frame = c->slf_frame;	593	slf_frame = c->slf_frame;
537	CORO_THROW = c->except;	594	CORO_THROW = c->except;
		595
		596	if (expect_false (enable_times))
		597	{
		598	if (expect_false (!times_valid))
		599	coro_times_update ();
		600
		601	coro_times_sub (c);
		602	}
		603
		604	if (expect_false (c->on_enter))
		605	{
		606	int i;
		607
		608	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
		609	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
		610	}
538	}	611	}
539		612
540	static void	613	static void
541	save_perl (pTHX_ Coro__State c)	614	save_perl (pTHX_ Coro__State c)
542	{	615	{
		616	if (expect_false (c->on_leave))
		617	{
		618	int i;
		619
		620	for (i = AvFILLp (c->on_leave); i >= 0; --i)
		621	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
		622	}
		623
		624	times_valid = 0;
		625
		626	if (expect_false (enable_times))
		627	{
		628	coro_times_update (); times_valid = 1;
		629	coro_times_add (c);
		630	}
		631
543	c->except = CORO_THROW;	632	c->except = CORO_THROW;
544	c->slf_frame = slf_frame;	633	c->slf_frame = slf_frame;
545		634
546	{	635	{
547	dSP;	636	dSP;
…		…
560	{	649	{
561	while (expect_true (cxix >= 0))	650	while (expect_true (cxix >= 0))
562	{	651	{
563	PERL_CONTEXT *cx = &ccstk[cxix--];	652	PERL_CONTEXT *cx = &ccstk[cxix--];
564		653
565	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))	654	if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
566	{	655	{
567	CV *cv = cx->blk_sub.cv;	656	CV *cv = cx->blk_sub.cv;
568		657
569	if (expect_true (CvDEPTH (cv)))	658	if (expect_true (CvDEPTH (cv)))
570	{	659	{
…		…
594	/* we manually unroll here, as usually 2 slots is enough */	683	/* we manually unroll here, as usually 2 slots is enough */
595	if (SLOT_COUNT >= 1) CXINC;	684	if (SLOT_COUNT >= 1) CXINC;
596	if (SLOT_COUNT >= 2) CXINC;	685	if (SLOT_COUNT >= 2) CXINC;
597	if (SLOT_COUNT >= 3) CXINC;	686	if (SLOT_COUNT >= 3) CXINC;
598	{	687	{
599	int i;	688	unsigned int i;
600	for (i = 3; i < SLOT_COUNT; ++i)	689	for (i = 3; i < SLOT_COUNT; ++i)
601	CXINC;	690	CXINC;
602	}	691	}
603	cxstack_ix -= SLOT_COUNT; /* undo allocation */	692	cxstack_ix -= SLOT_COUNT; /* undo allocation */
604		693
605	c->mainstack = PL_mainstack;	694	c->mainstack = PL_mainstack;
606		695
607	{	696	{
608	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	697	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
609		698
610	slot->defav = GvAV (PL_defgv);	699	slot->defav = GvAV (PL_defgv);
611	slot->defsv = DEFSV;	700	slot->defsv = DEFSV;
612	slot->errsv = ERRSV;	701	slot->errsv = ERRSV;
613	slot->irsgv = GvSV (irsgv);	702	slot->irsgv = GvSV (irsgv);
		703	slot->hinthv = GvHV (PL_hintgv);
614		704
615	#define VAR(name,type) slot->name = PL_ ## name;	705	#define VAR(name,type) slot->name = PL_ ## name;
616	# include "state.h"	706	# include "state.h"
617	#undef VAR	707	#undef VAR
618	}	708	}
…		…
745	#endif	835	#endif
746		836
747	/*	837	/*
748	* This overrides the default magic get method of %SIG elements.	838	* This overrides the default magic get method of %SIG elements.
749	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	839	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
750	* and instead of tryign to save and restore the hash elements, we just provide	840	* and instead of trying to save and restore the hash elements, we just provide
751	* readback here.	841	* readback here.
752	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
753	* not expecting this to actually change the hook. This is a potential problem
754	* when a schedule happens then, but we ignore this.
755	*/	842	*/
756	static int	843	static int
757	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)	844	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
758	{	845	{
759	const char *s = MgPV_nolen_const (mg);	846	const char *s = MgPV_nolen_const (mg);
…		…
812	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;	899	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
813		900
814	if (svp)	901	if (svp)
815	{	902	{
816	SV *old = *svp;	903	SV *old = *svp;
817	*svp = newSVsv (sv);	904	*svp = SvOK (sv) ? newSVsv (sv) : 0;
818	SvREFCNT_dec (old);	905	SvREFCNT_dec (old);
819	return 0;	906	return 0;
820	}	907	}
821	}	908	}
822		909
…		…
832		919
833	static int	920	static int
834	slf_check_nop (pTHX_ struct CoroSLF *frame)	921	slf_check_nop (pTHX_ struct CoroSLF *frame)
835	{	922	{
836	return 0;	923	return 0;
		924	}
		925
		926	static int
		927	slf_check_repeat (pTHX_ struct CoroSLF *frame)
		928	{
		929	return 1;
837	}	930	}
838		931
839	static UNOP coro_setup_op;	932	static UNOP coro_setup_op;
840		933
841	static void NOINLINE /* noinline to keep it out of the transfer fast path */	934	static void NOINLINE /* noinline to keep it out of the transfer fast path */
…		…
848		941
849	PL_runops = RUNOPS_DEFAULT;	942	PL_runops = RUNOPS_DEFAULT;
850	PL_curcop = &PL_compiling;	943	PL_curcop = &PL_compiling;
851	PL_in_eval = EVAL_NULL;	944	PL_in_eval = EVAL_NULL;
852	PL_comppad = 0;	945	PL_comppad = 0;
		946	PL_comppad_name = 0;
		947	PL_comppad_name_fill = 0;
		948	PL_comppad_name_floor = 0;
853	PL_curpm = 0;	949	PL_curpm = 0;
854	PL_curpad = 0;	950	PL_curpad = 0;
855	PL_localizing = 0;	951	PL_localizing = 0;
856	PL_dirty = 0;	952	PL_dirty = 0;
857	PL_restartop = 0;	953	PL_restartop = 0;
858	#if PERL_VERSION_ATLEAST (5,10,0)	954	#if PERL_VERSION_ATLEAST (5,10,0)
859	PL_parser = 0;	955	PL_parser = 0;
860	#endif	956	#endif
		957	PL_hints = 0;
861		958
862	/* recreate the die/warn hooks */	959	/* recreate the die/warn hooks */
863	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	960	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
864	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);	961	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
865		962
866	GvSV (PL_defgv) = newSV (0);	963	GvSV (PL_defgv) = newSV (0);
867	GvAV (PL_defgv) = coro->args; coro->args = 0;	964	GvAV (PL_defgv) = coro->args; coro->args = 0;
868	GvSV (PL_errgv) = newSV (0);	965	GvSV (PL_errgv) = newSV (0);
869	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	966	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		967	GvHV (PL_hintgv) = 0;
870	PL_rs = newSVsv (GvSV (irsgv));	968	PL_rs = newSVsv (GvSV (irsgv));
871	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	969	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
872		970
873	{	971	{
874	dSP;	972	dSP;
…		…
892	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	990	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
893	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	991	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
894		992
895	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	993	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
896	coro_setup_op.op_next = PL_op;	994	coro_setup_op.op_next = PL_op;
897	coro_setup_op.op_type = OP_CUSTOM;	995	coro_setup_op.op_type = OP_ENTERSUB;
898	coro_setup_op.op_ppaddr = pp_slf;	996	coro_setup_op.op_ppaddr = pp_slf;
899	/* no flags etc. required, as an init function won't be called */	997	/* no flags etc. required, as an init function won't be called */
900		998
901	PL_op = (OP *)&coro_setup_op;	999	PL_op = (OP *)&coro_setup_op;
902		1000
903	/* copy throw, in case it was set before coro_setup */	1001	/* copy throw, in case it was set before coro_setup */
904	CORO_THROW = coro->except;	1002	CORO_THROW = coro->except;
905	}
906		1003
		1004	if (expect_false (enable_times))
		1005	{
		1006	coro_times_update ();
		1007	coro_times_sub (coro);
		1008	}
		1009	}
		1010
907	static void	1011	static void
908	coro_destruct (pTHX_ struct coro *coro)	1012	coro_unwind_stacks (pTHX)
909	{	1013	{
910	if (!IN_DESTRUCT)	1014	if (!IN_DESTRUCT)
911	{	1015	{
912	/* restore all saved variables and stuff */	1016	/* restore all saved variables and stuff */
913	LEAVE_SCOPE (0);	1017	LEAVE_SCOPE (0);
…		…
921	POPSTACK_TO (PL_mainstack);	1025	POPSTACK_TO (PL_mainstack);
922		1026
923	/* unwind main stack */	1027	/* unwind main stack */
924	dounwind (-1);	1028	dounwind (-1);
925	}	1029	}
		1030	}
926		1031
927	SvREFCNT_dec (GvSV (PL_defgv));	1032	static void
928	SvREFCNT_dec (GvAV (PL_defgv));	1033	coro_destruct_perl (pTHX_ struct coro *coro)
929	SvREFCNT_dec (GvSV (PL_errgv));	1034	{
930	SvREFCNT_dec (PL_defoutgv);	1035	SV *svf [9];
931	SvREFCNT_dec (PL_rs);
932	SvREFCNT_dec (GvSV (irsgv));
933		1036
934	SvREFCNT_dec (PL_diehook);
935	SvREFCNT_dec (PL_warnhook);
936		1037	{
		1038	struct coro *current = SvSTATE_current;
		1039
		1040	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
		1041
		1042	save_perl (aTHX_ current);
		1043	load_perl (aTHX_ coro);
		1044
		1045	coro_unwind_stacks (aTHX);
		1046	coro_destruct_stacks (aTHX);
		1047
		1048	// now save some sv's to be free'd later
		1049	svf [0] = GvSV (PL_defgv);
		1050	svf [1] = (SV *)GvAV (PL_defgv);
		1051	svf [2] = GvSV (PL_errgv);
		1052	svf [3] = (SV *)PL_defoutgv;
		1053	svf [4] = PL_rs;
		1054	svf [5] = GvSV (irsgv);
		1055	svf [6] = (SV *)GvHV (PL_hintgv);
		1056	svf [7] = PL_diehook;
		1057	svf [8] = PL_warnhook;
		1058	assert (9 == sizeof (svf) / sizeof (*svf));
		1059
		1060	load_perl (aTHX_ current);
		1061	}
		1062
		1063	{
		1064	unsigned int i;
		1065
		1066	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
		1067	SvREFCNT_dec (svf [i]);
		1068
937	SvREFCNT_dec (coro->saved_deffh);	1069	SvREFCNT_dec (coro->saved_deffh);
938	SvREFCNT_dec (coro->rouse_cb);	1070	SvREFCNT_dec (coro->rouse_cb);
939	SvREFCNT_dec (coro->invoke_cb);	1071	SvREFCNT_dec (coro->invoke_cb);
940	SvREFCNT_dec (coro->invoke_av);	1072	SvREFCNT_dec (coro->invoke_av);
941		1073	}
942	coro_destruct_stacks (aTHX);
943	}	1074	}
944		1075
945	INLINE void	1076	INLINE void
946	free_coro_mortal (pTHX)	1077	free_coro_mortal (pTHX)
947	{	1078	{
…		…
955	static int	1086	static int
956	runops_trace (pTHX)	1087	runops_trace (pTHX)
957	{	1088	{
958	COP *oldcop = 0;	1089	COP *oldcop = 0;
959	int oldcxix = -2;	1090	int oldcxix = -2;
960	struct coro *coro = SvSTATE_current; /* trace cctx is tied to specific coro */
961	coro_cctx *cctx = coro->cctx;
962		1091
963	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))	1092	while ((PL_op = CALL_FPTR (PL_op->op_ppaddr) (aTHX)))
964	{	1093	{
965	PERL_ASYNC_CHECK ();	1094	PERL_ASYNC_CHECK ();
966		1095
967	if (cctx->flags & CC_TRACE_ALL)	1096	if (cctx_current->flags & CC_TRACE_ALL)
968	{	1097	{
969	if (PL_op->op_type == OP_LEAVESUB && cctx->flags & CC_TRACE_SUB)	1098	if (PL_op->op_type == OP_LEAVESUB && cctx_current->flags & CC_TRACE_SUB)
970	{	1099	{
971	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1100	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
972	SV **bot, **top;	1101	SV **bot, **top;
973	AV *av = newAV (); /* return values */	1102	AV *av = newAV (); /* return values */
974	SV **cb;	1103	SV **cb;
…		…
1011		1140
1012	if (PL_curcop != &PL_compiling)	1141	if (PL_curcop != &PL_compiling)
1013	{	1142	{
1014	SV **cb;	1143	SV **cb;
1015		1144
1016	if (oldcxix != cxstack_ix && cctx->flags & CC_TRACE_SUB)	1145	if (oldcxix != cxstack_ix && cctx_current->flags & CC_TRACE_SUB)
1017	{	1146	{
1018	PERL_CONTEXT *cx = &cxstack[cxstack_ix];	1147	PERL_CONTEXT *cx = &cxstack[cxstack_ix];
1019		1148
1020	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)	1149	if (CxTYPE (cx) == CXt_SUB && oldcxix < cxstack_ix)
1021	{	1150	{
1022	runops_proc_t old_runops = PL_runops;
1023	dSP;	1151	dSP;
1024	GV *gv = CvGV (cx->blk_sub.cv);	1152	GV *gv = CvGV (cx->blk_sub.cv);
1025	SV *fullname = sv_2mortal (newSV (0));	1153	SV *fullname = sv_2mortal (newSV (0));
1026		1154
1027	if (isGV (gv))	1155	if (isGV (gv))
…		…
1045	}	1173	}
1046		1174
1047	oldcxix = cxstack_ix;	1175	oldcxix = cxstack_ix;
1048	}	1176	}
1049		1177
1050	if (cctx->flags & CC_TRACE_LINE)	1178	if (cctx_current->flags & CC_TRACE_LINE)
1051	{	1179	{
1052	dSP;	1180	dSP;
1053		1181
1054	PL_runops = RUNOPS_DEFAULT;	1182	PL_runops = RUNOPS_DEFAULT;
1055	ENTER;	1183	ENTER;
…		…
1074		1202
1075	TAINT_NOT;	1203	TAINT_NOT;
1076	return 0;	1204	return 0;
1077	}	1205	}
1078		1206
1079	static struct coro_cctx *cctx_ssl_cctx;
1080	static struct CoroSLF cctx_ssl_frame;	1207	static struct CoroSLF cctx_ssl_frame;
1081		1208
1082	static void	1209	static void
1083	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)	1210	slf_prepare_set_stacklevel (pTHX_ struct coro_transfer_args *ta)
1084	{	1211	{
1085	ta->prev = (struct coro *)cctx_ssl_cctx;
1086	ta->next = 0;	1212	ta->prev = 0;
1087	}	1213	}
1088		1214
1089	static int	1215	static int
1090	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)	1216	slf_check_set_stacklevel (pTHX_ struct CoroSLF *frame)
1091	{	1217	{
…		…
1094	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */	1220	return frame->check (aTHX_ frame); /* execute the restored frame - there must be one */
1095	}	1221	}
1096		1222
1097	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */	1223	/* initialises PL_top_env and injects a pseudo-slf-call to set the stacklevel */
1098	static void NOINLINE	1224	static void NOINLINE
1099	cctx_prepare (pTHX_ coro_cctx *cctx)	1225	cctx_prepare (pTHX)
1100	{	1226	{
1101	PL_top_env = &PL_start_env;	1227	PL_top_env = &PL_start_env;
1102		1228
1103	if (cctx->flags & CC_TRACE)	1229	if (cctx_current->flags & CC_TRACE)
1104	PL_runops = runops_trace;	1230	PL_runops = runops_trace;
1105		1231
1106	/* we already must be executing an SLF op, there is no other valid way	1232	/* we already must be executing an SLF op, there is no other valid way
1107	* that can lead to creation of a new cctx */	1233	* that can lead to creation of a new cctx */
1108	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",	1234	assert (("FATAL: can't prepare slf-less cctx in Coro module (please report)",
1109	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));	1235	slf_frame.prepare && PL_op->op_ppaddr == pp_slf));
1110		1236
1111	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */	1237	/* we must emulate leaving pp_slf, which is done inside slf_check_set_stacklevel */
1112	cctx_ssl_cctx = cctx;
1113	cctx_ssl_frame = slf_frame;	1238	cctx_ssl_frame = slf_frame;
1114		1239
1115	slf_frame.prepare = slf_prepare_set_stacklevel;	1240	slf_frame.prepare = slf_prepare_set_stacklevel;
1116	slf_frame.check = slf_check_set_stacklevel;	1241	slf_frame.check = slf_check_set_stacklevel;
1117	}	1242	}
…		…
1140	/* normally we would need to skip the entersub here */	1265	/* normally we would need to skip the entersub here */
1141	/* not doing so will re-execute it, which is exactly what we want */	1266	/* not doing so will re-execute it, which is exactly what we want */
1142	/* PL_nop = PL_nop->op_next */	1267	/* PL_nop = PL_nop->op_next */
1143		1268
1144	/* inject a fake subroutine call to cctx_init */	1269	/* inject a fake subroutine call to cctx_init */
1145	cctx_prepare (aTHX_ (coro_cctx *)arg);	1270	cctx_prepare (aTHX);
1146		1271
1147	/* cctx_run is the alternative tail of transfer() */	1272	/* cctx_run is the alternative tail of transfer() */
1148	transfer_tail (aTHX);	1273	transfer_tail (aTHX);
1149		1274
1150	/* somebody or something will hit me for both perl_run and PL_restartop */	1275	/* somebody or something will hit me for both perl_run and PL_restartop */
1151	PL_restartop = PL_op;	1276	PL_restartop = PL_op;
1152	perl_run (PL_curinterp);	1277	perl_run (PL_curinterp);
1153	/*	1278	/*
1154	* Unfortunately, there is no way to get at the return values of the	1279	* Unfortunately, there is no way to get at the return values of the
1155	* coro body here, as perl_run destroys these	1280	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1281	* runtime errors here, as this is just a random interpreter, not a thread.
1156	*/	1282	*/
1157		1283
1158	/*	1284	/*
1159	* If perl-run returns we assume exit() was being called or the coro	1285	* If perl-run returns we assume exit() was being called or the coro
1160	* fell off the end, which seems to be the only valid (non-bug)	1286	* fell off the end, which seems to be the only valid (non-bug)
1161	* reason for perl_run to return. We try to exit by jumping to the	1287	* reason for perl_run to return. We try to exit by jumping to the
1162	* bootstrap-time "top" top_env, as we cannot restore the "main"	1288	* bootstrap-time "top" top_env, as we cannot restore the "main"
1163	* coroutine as Coro has no such concept	1289	* coroutine as Coro has no such concept.
		1290	* This actually isn't valid with the pthread backend, but OSes requiring
		1291	* that backend are too broken to do it in a standards-compliant way.
1164	*/	1292	*/
1165	PL_top_env = main_top_env;	1293	PL_top_env = main_top_env;
1166	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1294	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1167	}	1295	}
1168	}	1296	}
…		…
1245	cctx_destroy (coro_cctx *cctx)	1373	cctx_destroy (coro_cctx *cctx)
1246	{	1374	{
1247	if (!cctx)	1375	if (!cctx)
1248	return;	1376	return;
1249		1377
		1378	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
		1379
1250	--cctx_count;	1380	--cctx_count;
1251	coro_destroy (&cctx->cctx);	1381	coro_destroy (&cctx->cctx);
1252		1382
1253	/* coro_transfer creates new, empty cctx's */	1383	/* coro_transfer creates new, empty cctx's */
1254	if (cctx->sptr)	1384	if (cctx->sptr)
…		…
1317	/* TODO: throwing up here is considered harmful */	1447	/* TODO: throwing up here is considered harmful */
1318		1448
1319	if (expect_true (prev != next))	1449	if (expect_true (prev != next))
1320	{	1450	{
1321	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1451	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1322	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states,");	1452	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1323		1453
1324	if (expect_false (next->flags & CF_RUNNING))
1325	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1326
1327	if (expect_false (next->flags & CF_DESTROYED))	1454	if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1328	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");	1455	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1329		1456
1330	#if !PERL_VERSION_ATLEAST (5,10,0)	1457	#if !PERL_VERSION_ATLEAST (5,10,0)
1331	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1458	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1332	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1459	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1333	#endif	1460	#endif
…		…
1339	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)	1466	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
1340	{	1467	{
1341	dSTACKLEVEL;	1468	dSTACKLEVEL;
1342		1469
1343	/* sometimes transfer is only called to set idle_sp */	1470	/* sometimes transfer is only called to set idle_sp */
1344	if (expect_false (!next))	1471	if (expect_false (!prev))
1345	{	1472	{
1346	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1473	cctx_current->idle_sp = STACKLEVEL;
1347	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1474	assert (cctx_current->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1348	}	1475	}
1349	else if (expect_true (prev != next))	1476	else if (expect_true (prev != next))
1350	{	1477	{
1351	coro_cctx *prev__cctx;	1478	coro_cctx *cctx_prev;
1352		1479
1353	if (expect_false (prev->flags & CF_NEW))	1480	if (expect_false (prev->flags & CF_NEW))
1354	{	1481	{
1355	/* create a new empty/source context */	1482	/* create a new empty/source context */
1356	prev->cctx = cctx_new_empty ();
1357	prev->flags &= ~CF_NEW;	1483	prev->flags &= ~CF_NEW;
1358	prev->flags |= CF_RUNNING;	1484	prev->flags |= CF_RUNNING;
1359	}	1485	}
1360		1486
1361	prev->flags &= ~CF_RUNNING;	1487	prev->flags &= ~CF_RUNNING;
…		…
1372	coro_setup (aTHX_ next);	1498	coro_setup (aTHX_ next);
1373	}	1499	}
1374	else	1500	else
1375	load_perl (aTHX_ next);	1501	load_perl (aTHX_ next);
1376		1502
1377	prev__cctx = prev->cctx;
1378
1379	/* possibly untie and reuse the cctx */	1503	/* possibly untie and reuse the cctx */
1380	if (expect_true (	1504	if (expect_true (
1381	prev__cctx->idle_sp == STACKLEVEL	1505	cctx_current->idle_sp == STACKLEVEL
1382	&& !(prev__cctx->flags & CC_TRACE)	1506	&& !(cctx_current->flags & CC_TRACE)
1383	&& !force_cctx	1507	&& !force_cctx
1384	))	1508	))
1385	{	1509	{
1386	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */	1510	/* I assume that stacklevel is a stronger indicator than PL_top_env changes */
1387	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == prev__cctx->idle_te));	1511	assert (("FATAL: current top_env must equal previous top_env in Coro (please report)", PL_top_env == cctx_current->idle_te));
1388		1512
1389	prev->cctx = 0;
1390
1391	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */	1513	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get. */
1392	/* without this the next cctx_get might destroy the prev__cctx while still in use */	1514	/* without this the next cctx_get might destroy the running cctx while still in use */
1393	if (expect_false (CCTX_EXPIRED (prev__cctx)))	1515	if (expect_false (CCTX_EXPIRED (cctx_current)))
1394	if (!next->cctx)	1516	if (expect_true (!next->cctx))
1395	next->cctx = cctx_get (aTHX);	1517	next->cctx = cctx_get (aTHX);
1396		1518
1397	cctx_put (prev__cctx);	1519	cctx_put (cctx_current);
1398	}	1520	}
		1521	else
		1522	prev->cctx = cctx_current;
1399		1523
1400	++next->usecount;	1524	++next->usecount;
1401		1525
1402	if (expect_true (!next->cctx))	1526	cctx_prev = cctx_current;
1403	next->cctx = cctx_get (aTHX);	1527	cctx_current = expect_false (next->cctx) ? next->cctx : cctx_get (aTHX);
1404		1528
1405	if (expect_false (prev__cctx != next->cctx))	1529	next->cctx = 0;
		1530
		1531	if (expect_false (cctx_prev != cctx_current))
1406	{	1532	{
1407	prev__cctx->top_env = PL_top_env;	1533	cctx_prev->top_env = PL_top_env;
1408	PL_top_env = next->cctx->top_env;	1534	PL_top_env = cctx_current->top_env;
1409	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1535	coro_transfer (&cctx_prev->cctx, &cctx_current->cctx);
1410	}	1536	}
1411		1537
1412	transfer_tail (aTHX);	1538	transfer_tail (aTHX);
1413	}	1539	}
1414	}	1540	}
…		…
1422	coro_state_destroy (pTHX_ struct coro *coro)	1548	coro_state_destroy (pTHX_ struct coro *coro)
1423	{	1549	{
1424	if (coro->flags & CF_DESTROYED)	1550	if (coro->flags & CF_DESTROYED)
1425	return 0;	1551	return 0;
1426		1552
1427	if (coro->on_destroy)	1553	if (coro->on_destroy && !PL_dirty)
1428	coro->on_destroy (aTHX_ coro);	1554	coro->on_destroy (aTHX_ coro);
1429		1555
1430	coro->flags |= CF_DESTROYED;	1556	coro->flags |= CF_DESTROYED;
1431		1557
1432	if (coro->flags & CF_READY)	1558	if (coro->flags & CF_READY)
…		…
1436	--coro_nready;	1562	--coro_nready;
1437	}	1563	}
1438	else	1564	else
1439	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1565	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1440		1566
1441	if (coro->mainstack && coro->mainstack != main_mainstack)	1567	if (coro->mainstack
1442	{	1568	&& coro->mainstack != main_mainstack
1443	struct coro temp;	1569	&& coro->slot
1444		1570	&& !PL_dirty)
1445	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1446
1447	save_perl (aTHX_ &temp);
1448	load_perl (aTHX_ coro);
1449
1450	coro_destruct (aTHX_ coro);	1571	coro_destruct_perl (aTHX_ coro);
1451
1452	load_perl (aTHX_ &temp);
1453
1454	coro->slot = 0;
1455	}
1456		1572
1457	cctx_destroy (coro->cctx);	1573	cctx_destroy (coro->cctx);
1458	SvREFCNT_dec (coro->startcv);	1574	SvREFCNT_dec (coro->startcv);
1459	SvREFCNT_dec (coro->args);	1575	SvREFCNT_dec (coro->args);
1460	SvREFCNT_dec (CORO_THROW);	1576	SvREFCNT_dec (CORO_THROW);
…		…
1519		1635
1520	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1636	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1521	TRANSFER (ta, 1);	1637	TRANSFER (ta, 1);
1522	}	1638	}
1523		1639
1524	/*****************************************************************************/
1525	/* gensub: simple closure generation utility */
1526
1527	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1528
1529	/* create a closure from XS, returns a code reference */
1530	/* the arg can be accessed via GENSUB_ARG from the callback */
1531	/* the callback must use dXSARGS/XSRETURN */
1532	static SV *
1533	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1534	{
1535	CV *cv = (CV *)newSV (0);
1536
1537	sv_upgrade ((SV *)cv, SVt_PVCV);
1538
1539	CvANON_on (cv);
1540	CvISXSUB_on (cv);
1541	CvXSUB (cv) = xsub;
1542	GENSUB_ARG = arg;
1543
1544	return newRV_noinc ((SV *)cv);
1545	}
1546
1547	/** Coro ********************************************************************/	1640	/** Coro ********************************************************************/
1548		1641
1549	INLINE void	1642	INLINE void
1550	coro_enq (pTHX_ struct coro *coro)	1643	coro_enq (pTHX_ struct coro *coro)
1551	{	1644	{
1552	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));	1645	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1553	}
1554		1646
1555	INLINE SV *	1647	SvREFCNT_inc_NN (coro->hv);
		1648
		1649	coro->next_ready = 0;
		1650	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
		1651	ready [1] = coro;
		1652	}
		1653
		1654	INLINE struct coro *
1556	coro_deq (pTHX)	1655	coro_deq (pTHX)
1557	{	1656	{
1558	int prio;	1657	int prio;
1559		1658
1560	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1659	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1561	if (AvFILLp (coro_ready [prio]) >= 0)	1660	{
1562	return av_shift (coro_ready [prio]);	1661	struct coro **ready = coro_ready [prio];
		1662
		1663	if (ready [0])
		1664	{
		1665	struct coro *coro = ready [0];
		1666	ready [0] = coro->next_ready;
		1667	return coro;
		1668	}
		1669	}
1563		1670
1564	return 0;	1671	return 0;
		1672	}
		1673
		1674	static void
		1675	invoke_sv_ready_hook_helper (void)
		1676	{
		1677	dTHX;
		1678	dSP;
		1679
		1680	ENTER;
		1681	SAVETMPS;
		1682
		1683	PUSHMARK (SP);
		1684	PUTBACK;
		1685	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1686
		1687	FREETMPS;
		1688	LEAVE;
1565	}	1689	}
1566		1690
1567	static int	1691	static int
1568	api_ready (pTHX_ SV *coro_sv)	1692	api_ready (pTHX_ SV *coro_sv)
1569	{	1693	{
1570	struct coro *coro;
1571	SV *sv_hook;
1572	void (*xs_hook)(void);
1573
1574	if (SvROK (coro_sv))
1575	coro_sv = SvRV (coro_sv);
1576
1577	coro = SvSTATE (coro_sv);	1694	struct coro *coro = SvSTATE (coro_sv);
1578		1695
1579	if (coro->flags & CF_READY)	1696	if (coro->flags & CF_READY)
1580	return 0;	1697	return 0;
1581		1698
1582	coro->flags |= CF_READY;	1699	coro->flags |= CF_READY;
1583		1700
1584	sv_hook = coro_nready ? 0 : coro_readyhook;
1585	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1586
1587	coro_enq (aTHX_ coro);	1701	coro_enq (aTHX_ coro);
1588	++coro_nready;
1589		1702
1590	if (sv_hook)	1703	if (!coro_nready++)
1591	{	1704	if (coroapi.readyhook)
1592	dSP;	1705	coroapi.readyhook ();
1593
1594	ENTER;
1595	SAVETMPS;
1596
1597	PUSHMARK (SP);
1598	PUTBACK;
1599	call_sv (sv_hook, G_VOID | G_DISCARD);
1600
1601	FREETMPS;
1602	LEAVE;
1603	}
1604
1605	if (xs_hook)
1606	xs_hook ();
1607		1706
1608	return 1;	1707	return 1;
1609	}	1708	}
1610		1709
1611	static int	1710	static int
1612	api_is_ready (pTHX_ SV *coro_sv)	1711	api_is_ready (pTHX_ SV *coro_sv)
1613	{	1712	{
1614	return !!(SvSTATE (coro_sv)->flags & CF_READY);	1713	return !!(SvSTATE (coro_sv)->flags & CF_READY);
1615	}	1714	}
1616		1715
		1716	/* expects to own a reference to next->hv */
1617	INLINE void	1717	INLINE void
1618	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1718	prepare_schedule_to (pTHX_ struct coro_transfer_args *ta, struct coro *next)
1619	{	1719	{
1620	SV *prev_sv, *next_sv;
1621
1622	for (;;)
1623	{
1624	next_sv = coro_deq (aTHX);
1625
1626	/* nothing to schedule: call the idle handler */
1627	if (expect_false (!next_sv))
1628	{
1629	dSP;
1630
1631	ENTER;
1632	SAVETMPS;
1633
1634	PUSHMARK (SP);
1635	PUTBACK;
1636	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);
1637
1638	FREETMPS;
1639	LEAVE;
1640	continue;
1641	}
1642
1643	ta->next = SvSTATE_hv (next_sv);
1644
1645	/* cannot transfer to destroyed coros, skip and look for next */
1646	if (expect_false (ta->next->flags & CF_DESTROYED))
1647	{
1648	SvREFCNT_dec (next_sv);
1649	/* coro_nready has already been taken care of by destroy */
1650	continue;
1651	}
1652
1653	--coro_nready;
1654	break;
1655	}
1656
1657	/* free this only after the transfer */
1658	prev_sv = SvRV (coro_current);	1720	SV *prev_sv = SvRV (coro_current);
		1721
1659	ta->prev = SvSTATE_hv (prev_sv);	1722	ta->prev = SvSTATE_hv (prev_sv);
		1723	ta->next = next;
		1724
1660	TRANSFER_CHECK (*ta);	1725	TRANSFER_CHECK (*ta);
1661	assert (("FATAL: next coroutine isn't marked as ready in Coro (please report)", ta->next->flags & CF_READY));	1726
1662	ta->next->flags &= ~CF_READY;
1663	SvRV_set (coro_current, next_sv);	1727	SvRV_set (coro_current, (SV *)next->hv);
1664		1728
1665	free_coro_mortal (aTHX);	1729	free_coro_mortal (aTHX);
1666	coro_mortal = prev_sv;	1730	coro_mortal = prev_sv;
1667	}	1731	}
1668		1732
		1733	static void
		1734	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
		1735	{
		1736	for (;;)
		1737	{
		1738	struct coro *next = coro_deq (aTHX);
		1739
		1740	if (expect_true (next))
		1741	{
		1742	/* cannot transfer to destroyed coros, skip and look for next */
		1743	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
		1744	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
		1745	else
		1746	{
		1747	next->flags &= ~CF_READY;
		1748	--coro_nready;
		1749
		1750	prepare_schedule_to (aTHX_ ta, next);
		1751	break;
		1752	}
		1753	}
		1754	else
		1755	{
		1756	/* nothing to schedule: call the idle handler */
		1757	if (SvROK (sv_idle)
		1758	&& SvOBJECT (SvRV (sv_idle)))
		1759	{
		1760	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
		1761	api_ready (aTHX_ SvRV (sv_idle));
		1762	--coro_nready;
		1763	}
		1764	else
		1765	{
		1766	dSP;
		1767
		1768	ENTER;
		1769	SAVETMPS;
		1770
		1771	PUSHMARK (SP);
		1772	PUTBACK;
		1773	call_sv (sv_idle, G_VOID | G_DISCARD);
		1774
		1775	FREETMPS;
		1776	LEAVE;
		1777	}
		1778	}
		1779	}
		1780	}
		1781
1669	INLINE void	1782	INLINE void
1670	prepare_cede (pTHX_ struct coro_transfer_args *ta)	1783	prepare_cede (pTHX_ struct coro_transfer_args *ta)
1671	{	1784	{
1672	api_ready (aTHX_ coro_current);	1785	api_ready (aTHX_ coro_current);
1673	prepare_schedule (aTHX_ ta);	1786	prepare_schedule (aTHX_ ta);
…		…
1692	{	1805	{
1693	struct coro_transfer_args ta;	1806	struct coro_transfer_args ta;
1694		1807
1695	prepare_schedule (aTHX_ &ta);	1808	prepare_schedule (aTHX_ &ta);
1696	TRANSFER (ta, 1);	1809	TRANSFER (ta, 1);
		1810	}
		1811
		1812	static void
		1813	api_schedule_to (pTHX_ SV *coro_sv)
		1814	{
		1815	struct coro_transfer_args ta;
		1816	struct coro *next = SvSTATE (coro_sv);
		1817
		1818	SvREFCNT_inc_NN (coro_sv);
		1819	prepare_schedule_to (aTHX_ &ta, next);
1697	}	1820	}
1698		1821
1699	static int	1822	static int
1700	api_cede (pTHX)	1823	api_cede (pTHX)
1701	{	1824	{
…		…
1730	static void	1853	static void
1731	api_trace (pTHX_ SV *coro_sv, int flags)	1854	api_trace (pTHX_ SV *coro_sv, int flags)
1732	{	1855	{
1733	struct coro *coro = SvSTATE (coro_sv);	1856	struct coro *coro = SvSTATE (coro_sv);
1734		1857
		1858	if (coro->flags & CF_RUNNING)
		1859	croak ("cannot enable tracing on a running coroutine, caught");
		1860
1735	if (flags & CC_TRACE)	1861	if (flags & CC_TRACE)
1736	{	1862	{
1737	if (!coro->cctx)	1863	if (!coro->cctx)
1738	coro->cctx = cctx_new_run ();	1864	coro->cctx = cctx_new_run ();
1739	else if (!(coro->cctx->flags & CC_TRACE))	1865	else if (!(coro->cctx->flags & CC_TRACE))
1740	croak ("cannot enable tracing on coroutine with custom stack,");	1866	croak ("cannot enable tracing on coroutine with custom stack, caught");
1741		1867
1742	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1868	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1743	}	1869	}
1744	else if (coro->cctx && coro->cctx->flags & CC_TRACE)	1870	else if (coro->cctx && coro->cctx->flags & CC_TRACE)
1745	{	1871	{
…		…
1748	if (coro->flags & CF_RUNNING)	1874	if (coro->flags & CF_RUNNING)
1749	PL_runops = RUNOPS_DEFAULT;	1875	PL_runops = RUNOPS_DEFAULT;
1750	else	1876	else
1751	coro->slot->runops = RUNOPS_DEFAULT;	1877	coro->slot->runops = RUNOPS_DEFAULT;
1752	}	1878	}
		1879	}
		1880
		1881	static void
		1882	coro_call_on_destroy (pTHX_ struct coro *coro)
		1883	{
		1884	SV **on_destroyp = hv_fetch (coro->hv, "_on_destroy", sizeof ("_on_destroy") - 1, 0);
		1885	SV **statusp = hv_fetch (coro->hv, "_status", sizeof ("_status") - 1, 0);
		1886
		1887	if (on_destroyp)
		1888	{
		1889	AV *on_destroy = (AV *)SvRV (*on_destroyp);
		1890
		1891	while (AvFILLp (on_destroy) >= 0)
		1892	{
		1893	dSP; /* don't disturb outer sp */
		1894	SV *cb = av_pop (on_destroy);
		1895
		1896	PUSHMARK (SP);
		1897
		1898	if (statusp)
		1899	{
		1900	int i;
		1901	AV *status = (AV *)SvRV (*statusp);
		1902	EXTEND (SP, AvFILLp (status) + 1);
		1903
		1904	for (i = 0; i <= AvFILLp (status); ++i)
		1905	PUSHs (AvARRAY (status)[i]);
		1906	}
		1907
		1908	PUTBACK;
		1909	call_sv (sv_2mortal (cb), G_VOID | G_DISCARD);
		1910	}
		1911	}
		1912	}
		1913
		1914	static void
		1915	slf_init_terminate (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		1916	{
		1917	int i;
		1918	HV *hv = (HV *)SvRV (coro_current);
		1919	AV *av = newAV ();
		1920
		1921	/* items are actually not so common, so optimise for this case */
		1922	if (items)
		1923	{
		1924	av_extend (av, items - 1);
		1925
		1926	for (i = 0; i < items; ++i)
		1927	av_push (av, SvREFCNT_inc_NN (arg [i]));
		1928	}
		1929
		1930	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
		1931
		1932	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
		1933	api_ready (aTHX_ sv_manager);
		1934
		1935	frame->prepare = prepare_schedule;
		1936	frame->check = slf_check_repeat;
		1937
		1938	/* as a minor optimisation, we could unwind all stacks here */
		1939	/* but that puts extra pressure on pp_slf, and is not worth much */
		1940	/*coro_unwind_stacks (aTHX);*/
1753	}	1941	}
1754		1942
1755	/*****************************************************************************/	1943	/*****************************************************************************/
1756	/* async pool handler */	1944	/* async pool handler */
1757		1945
…		…
1835		2023
1836	static void	2024	static void
1837	coro_rouse_callback (pTHX_ CV *cv)	2025	coro_rouse_callback (pTHX_ CV *cv)
1838	{	2026	{
1839	dXSARGS;	2027	dXSARGS;
1840	SV *data = (SV *)GENSUB_ARG;	2028	SV *data = (SV *)S_GENSUB_ARG;
1841		2029
1842	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2030	if (SvTYPE (SvRV (data)) != SVt_PVAV)
1843	{	2031	{
1844	/* first call, set args */	2032	/* first call, set args */
		2033	SV *coro = SvRV (data);
1845	AV *av = newAV ();	2034	AV *av = newAV ();
1846	SV *coro = SvRV (data);
1847		2035
1848	SvRV_set (data, (SV *)av);	2036	SvRV_set (data, (SV *)av);
1849	api_ready (aTHX_ coro);
1850	SvREFCNT_dec (coro);
1851		2037
1852	/* better take a full copy of the arguments */	2038	/* better take a full copy of the arguments */
1853	while (items--)	2039	while (items--)
1854	av_store (av, items, newSVsv (ST (items)));	2040	av_store (av, items, newSVsv (ST (items)));
		2041
		2042	api_ready (aTHX_ coro);
		2043	SvREFCNT_dec (coro);
1855	}	2044	}
1856		2045
1857	XSRETURN_EMPTY;	2046	XSRETURN_EMPTY;
1858	}	2047	}
1859		2048
…		…
1876		2065
1877	EXTEND (SP, AvFILLp (av) + 1);	2066	EXTEND (SP, AvFILLp (av) + 1);
1878	for (i = 0; i <= AvFILLp (av); ++i)	2067	for (i = 0; i <= AvFILLp (av); ++i)
1879	PUSHs (sv_2mortal (AvARRAY (av)[i]));	2068	PUSHs (sv_2mortal (AvARRAY (av)[i]));
1880		2069
1881	/* we have stolen the elements, so ste length to zero and free */	2070	/* we have stolen the elements, so set length to zero and free */
1882	AvFILLp (av) = -1;	2071	AvFILLp (av) = -1;
1883	av_undef (av);	2072	av_undef (av);
1884		2073
1885	PUTBACK;	2074	PUTBACK;
1886	}	2075	}
…		…
1910	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2099	|| SvTYPE (SvRV (cb)) != SVt_PVCV
1911	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2100	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1912	croak ("Coro::rouse_wait called with illegal callback argument,");	2101	croak ("Coro::rouse_wait called with illegal callback argument,");
1913		2102
1914	{	2103	{
1915	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2104	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
1916	SV *data = (SV *)GENSUB_ARG;	2105	SV *data = (SV *)S_GENSUB_ARG;
1917		2106
1918	frame->data = (void *)data;	2107	frame->data = (void *)data;
1919	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2108	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
1920	frame->check = slf_check_rouse_wait;	2109	frame->check = slf_check_rouse_wait;
1921	}	2110	}
…		…
1925	coro_new_rouse_cb (pTHX)	2114	coro_new_rouse_cb (pTHX)
1926	{	2115	{
1927	HV *hv = (HV *)SvRV (coro_current);	2116	HV *hv = (HV *)SvRV (coro_current);
1928	struct coro *coro = SvSTATE_hv (hv);	2117	struct coro *coro = SvSTATE_hv (hv);
1929	SV *data = newRV_inc ((SV *)hv);	2118	SV *data = newRV_inc ((SV *)hv);
1930	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2119	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
1931		2120
1932	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2121	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
1933	SvREFCNT_dec (data); /* magicext increases the refcount */	2122	SvREFCNT_dec (data); /* magicext increases the refcount */
1934		2123
1935	SvREFCNT_dec (coro->rouse_cb);	2124	SvREFCNT_dec (coro->rouse_cb);
…		…
1990	static void	2179	static void
1991	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2180	slf_init_schedule (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1992	{	2181	{
1993	frame->prepare = prepare_schedule;	2182	frame->prepare = prepare_schedule;
1994	frame->check = slf_check_nop;	2183	frame->check = slf_check_nop;
		2184	}
		2185
		2186	static void
		2187	slf_prepare_schedule_to (pTHX_ struct coro_transfer_args *ta)
		2188	{
		2189	struct coro *next = (struct coro *)slf_frame.data;
		2190
		2191	SvREFCNT_inc_NN (next->hv);
		2192	prepare_schedule_to (aTHX_ ta, next);
		2193	}
		2194
		2195	static void
		2196	slf_init_schedule_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2197	{
		2198	if (!items)
		2199	croak ("Coro::schedule_to expects a coroutine argument, caught");
		2200
		2201	frame->data = (void *)SvSTATE (arg [0]);
		2202	frame->prepare = slf_prepare_schedule_to;
		2203	frame->check = slf_check_nop;
		2204	}
		2205
		2206	static void
		2207	slf_init_cede_to (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
		2208	{
		2209	api_ready (aTHX_ SvRV (coro_current));
		2210
		2211	slf_init_schedule_to (aTHX_ frame, cv, arg, items);
1995	}	2212	}
1996		2213
1997	static void	2214	static void
1998	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2215	slf_init_cede (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
1999	{	2216	{
…		…
2145	}	2362	}
2146	else	2363	else
2147	slf_argc = 0;	2364	slf_argc = 0;
2148		2365
2149	PL_op->op_ppaddr = pp_slf;	2366	PL_op->op_ppaddr = pp_slf;
2150	PL_op->op_type = OP_CUSTOM; /* maybe we should leave it at entersub? */	2367	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2151		2368
2152	PL_op = (OP *)&slf_restore;	2369	PL_op = (OP *)&slf_restore;
		2370	}
		2371
		2372	/*****************************************************************************/
		2373	/* dynamic wind */
		2374
		2375	static void
		2376	on_enterleave_call (pTHX_ SV *cb)
		2377	{
		2378	dSP;
		2379
		2380	PUSHSTACK;
		2381
		2382	PUSHMARK (SP);
		2383	PUTBACK;
		2384	call_sv (cb, G_VOID | G_DISCARD);
		2385	SPAGAIN;
		2386
		2387	POPSTACK;
		2388	}
		2389
		2390	static SV *
		2391	coro_avp_pop_and_free (pTHX_ AV **avp)
		2392	{
		2393	AV *av = *avp;
		2394	SV *res = av_pop (av);
		2395
		2396	if (AvFILLp (av) < 0)
		2397	{
		2398	*avp = 0;
		2399	SvREFCNT_dec (av);
		2400	}
		2401
		2402	return res;
		2403	}
		2404
		2405	static void
		2406	coro_pop_on_enter (pTHX_ void *coro)
		2407	{
		2408	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
		2409	SvREFCNT_dec (cb);
		2410	}
		2411
		2412	static void
		2413	coro_pop_on_leave (pTHX_ void *coro)
		2414	{
		2415	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
		2416	on_enterleave_call (aTHX_ sv_2mortal (cb));
2153	}	2417	}
2154		2418
2155	/*****************************************************************************/	2419	/*****************************************************************************/
2156	/* PerlIO::cede */	2420	/* PerlIO::cede */
2157		2421
…		…
2231	/* Coro::Semaphore & Coro::Signal */	2495	/* Coro::Semaphore & Coro::Signal */
2232		2496
2233	static SV *	2497	static SV *
2234	coro_waitarray_new (pTHX_ int count)	2498	coro_waitarray_new (pTHX_ int count)
2235	{	2499	{
2236	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2500	/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2237	AV *av = newAV ();	2501	AV *av = newAV ();
2238	SV **ary;	2502	SV **ary;
2239		2503
2240	/* unfortunately, building manually saves memory */	2504	/* unfortunately, building manually saves memory */
2241	Newx (ary, 2, SV *);	2505	Newx (ary, 2, SV *);
2242	AvALLOC (av) = ary;	2506	AvALLOC (av) = ary;
		2507	#if PERL_VERSION_ATLEAST (5,10,0)
2243	/*AvARRAY (av) = ary;*/	2508	AvARRAY (av) = ary;
		2509	#else
2244	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */	2510	/* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
		2511	/* -DDEBUGGING flags this as a bug, despite it perfectly working */
		2512	SvPVX ((SV *)av) = (char *)ary;
		2513	#endif
2245	AvMAX (av) = 1;	2514	AvMAX (av) = 1;
2246	AvFILLp (av) = 0;	2515	AvFILLp (av) = 0;
2247	ary [0] = newSViv (count);	2516	ary [0] = newSViv (count);
2248		2517
2249	return newRV_noinc ((SV *)av);	2518	return newRV_noinc ((SV *)av);
…		…
2378	{	2647	{
2379	if (items >= 2)	2648	if (items >= 2)
2380	{	2649	{
2381	/* callback form */	2650	/* callback form */
2382	AV *av = (AV *)SvRV (arg [0]);	2651	AV *av = (AV *)SvRV (arg [0]);
2383	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2652	SV *cb_cv = s_get_cv_croak (arg [1]);
2384		2653
2385	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));	2654	av_push (av, SvREFCNT_inc_NN (cb_cv));
2386		2655
2387	if (SvIVX (AvARRAY (av)[0]) > 0)	2656	if (SvIVX (AvARRAY (av)[0]) > 0)
2388	coro_semaphore_adjust (aTHX_ av, 0);	2657	coro_semaphore_adjust (aTHX_ av, 0);
2389		2658
2390	frame->prepare = prepare_nop;	2659	frame->prepare = prepare_nop;
…		…
2414	AvARRAY (av)[0] = AvARRAY (av)[1];	2683	AvARRAY (av)[0] = AvARRAY (av)[1];
2415	AvARRAY (av)[1] = cb;	2684	AvARRAY (av)[1] = cb;
2416		2685
2417	cb = av_shift (av);	2686	cb = av_shift (av);
2418		2687
		2688	if (SvTYPE (cb) == SVt_PVCV)
		2689	{
		2690	dSP;
		2691	PUSHMARK (SP);
		2692	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2693	PUTBACK;
		2694	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2695	}
		2696	else
		2697	{
2419	api_ready (aTHX_ cb);	2698	api_ready (aTHX_ cb);
2420	sv_setiv (cb, 0); /* signal waiter */	2699	sv_setiv (cb, 0); /* signal waiter */
		2700	}
		2701
2421	SvREFCNT_dec (cb);	2702	SvREFCNT_dec (cb);
2422		2703
2423	--count;	2704	--count;
2424	}	2705	}
2425	}	2706	}
…		…
2434	static void	2715	static void
2435	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2716	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2436	{	2717	{
2437	AV *av = (AV *)SvRV (arg [0]);	2718	AV *av = (AV *)SvRV (arg [0]);
2438		2719
		2720	if (items >= 2)
		2721	{
		2722	SV *cb_cv = s_get_cv_croak (arg [1]);
		2723	av_push (av, SvREFCNT_inc_NN (cb_cv));
		2724
2439	if (SvIVX (AvARRAY (av)[0]))	2725	if (SvIVX (AvARRAY (av)[0]))
		2726	coro_signal_wake (aTHX_ av, 1); /* ust be the only waiter */
		2727
		2728	frame->prepare = prepare_nop;
		2729	frame->check = slf_check_nop;
		2730	}
		2731	else if (SvIVX (AvARRAY (av)[0]))
2440	{	2732	{
2441	SvIVX (AvARRAY (av)[0]) = 0;	2733	SvIVX (AvARRAY (av)[0]) = 0;
2442	frame->prepare = prepare_nop;	2734	frame->prepare = prepare_nop;
2443	frame->check = slf_check_nop;	2735	frame->check = slf_check_nop;
2444	}	2736	}
2445	else	2737	else
2446	{	2738	{
2447	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */	2739	SV *waiter = newSVsv (coro_current); /* owned by signal av */
2448		2740
2449	av_push (av, waiter);	2741	av_push (av, waiter);
2450		2742
2451	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */	2743	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2452	frame->prepare = prepare_schedule;	2744	frame->prepare = prepare_schedule;
…		…
2470		2762
2471	static void	2763	static void
2472	coro_aio_callback (pTHX_ CV *cv)	2764	coro_aio_callback (pTHX_ CV *cv)
2473	{	2765	{
2474	dXSARGS;	2766	dXSARGS;
2475	AV *state = (AV *)GENSUB_ARG;	2767	AV *state = (AV *)S_GENSUB_ARG;
2476	SV *coro = av_pop (state);	2768	SV *coro = av_pop (state);
2477	SV *data_sv = newSV (sizeof (struct io_state));	2769	SV *data_sv = newSV (sizeof (struct io_state));
2478		2770
2479	av_extend (state, items - 1);	2771	av_extend (state, items - 1);
2480		2772
…		…
2594		2886
2595	for (i = 0; i < items; ++i)	2887	for (i = 0; i < items; ++i)
2596	PUSHs (arg [i]);	2888	PUSHs (arg [i]);
2597		2889
2598	/* now push the callback closure */	2890	/* now push the callback closure */
2599	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	2891	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2600		2892
2601	/* now call the AIO function - we assume our request is uncancelable */	2893	/* now call the AIO function - we assume our request is uncancelable */
2602	PUTBACK;	2894	PUTBACK;
2603	call_sv ((SV *)req, G_VOID | G_DISCARD);	2895	call_sv ((SV *)req, G_VOID | G_DISCARD);
2604	}	2896	}
…		…
2618		2910
2619	XSRETURN_EMPTY;	2911	XSRETURN_EMPTY;
2620	}	2912	}
2621		2913
2622	/*****************************************************************************/	2914	/*****************************************************************************/
		2915
		2916	#if CORO_CLONE
		2917	# include "clone.c"
		2918	#endif
		2919
		2920	/*****************************************************************************/
		2921
		2922	static SV *
		2923	coro_new (HV *stash, SV **argv, int argc, int is_coro)
		2924	{
		2925	SV *coro_sv;
		2926	struct coro *coro;
		2927	MAGIC *mg;
		2928	HV *hv;
		2929	SV *cb;
		2930	int i;
		2931
		2932	if (argc > 0)
		2933	{
		2934	cb = s_get_cv_croak (argv [0]);
		2935
		2936	if (!is_coro)
		2937	{
		2938	if (CvISXSUB (cb))
		2939	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		2940
		2941	if (!CvROOT (cb))
		2942	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		2943	}
		2944	}
		2945
		2946	Newz (0, coro, 1, struct coro);
		2947	coro->args = newAV ();
		2948	coro->flags = CF_NEW;
		2949
		2950	if (coro_first) coro_first->prev = coro;
		2951	coro->next = coro_first;
		2952	coro_first = coro;
		2953
		2954	coro->hv = hv = newHV ();
		2955	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		2956	mg->mg_flags |= MGf_DUP;
		2957	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		2958
		2959	if (argc > 0)
		2960	{
		2961	av_extend (coro->args, argc + is_coro - 1);
		2962
		2963	if (is_coro)
		2964	{
		2965	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		2966	cb = (SV *)cv_coro_run;
		2967	}
		2968
		2969	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		2970
		2971	for (i = 1; i < argc; i++)
		2972	av_push (coro->args, newSVsv (argv [i]));
		2973	}
		2974
		2975	return coro_sv;
		2976	}
2623		2977
2624	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	2978	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2625		2979
2626	PROTOTYPES: DISABLE	2980	PROTOTYPES: DISABLE
2627		2981
…		…
2632	coro_thx = PERL_GET_CONTEXT;	2986	coro_thx = PERL_GET_CONTEXT;
2633	# endif	2987	# endif
2634	#endif	2988	#endif
2635	BOOT_PAGESIZE;	2989	BOOT_PAGESIZE;
2636		2990
		2991	cctx_current = cctx_new_empty ();
		2992
2637	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);	2993	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
2638	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);	2994	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
2639		2995
2640	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;	2996	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
2641	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;	2997	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
…		…
2660		3016
2661	{	3017	{
2662	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));	3018	SV *slf = sv_2mortal (newSViv (PTR2IV (pp_slf)));
2663		3019
2664	if (!PL_custom_op_names) PL_custom_op_names = newHV ();	3020	if (!PL_custom_op_names) PL_custom_op_names = newHV ();
2665	hv_store_ent (PL_custom_op_names, slf,	3021	hv_store_ent (PL_custom_op_names, slf, newSVpv ("coro_slf", 0), 0);
2666	newSVpv ("coro_slf", 0), 0);
2667		3022
2668	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();	3023	if (!PL_custom_op_descs) PL_custom_op_descs = newHV ();
2669	hv_store_ent (PL_custom_op_descs, slf,	3024	hv_store_ent (PL_custom_op_descs, slf, newSVpv ("coro schedule like function", 0), 0);
2670	newSVpv ("coro schedule like function", 0), 0);
2671	}	3025	}
2672		3026
2673	coroapi.ver = CORO_API_VERSION;	3027	coroapi.ver = CORO_API_VERSION;
2674	coroapi.rev = CORO_API_REVISION;	3028	coroapi.rev = CORO_API_REVISION;
2675		3029
…		…
2687		3041
2688	if (!svp) croak ("Time::HiRes is required");	3042	if (!svp) croak ("Time::HiRes is required");
2689	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");	3043	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2690		3044
2691	nvtime = INT2PTR (double (*)(), SvIV (*svp));	3045	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		3046
		3047	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		3048	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2692	}	3049	}
2693		3050
2694	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	3051	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2695	}	3052	}
2696		3053
2697	SV *	3054	SV *
2698	new (char *klass, ...)	3055	new (SV *klass, ...)
2699	ALIAS:	3056	ALIAS:
2700	Coro::new = 1	3057	Coro::new = 1
2701	CODE:	3058	CODE:
2702	{	3059	RETVAL = coro_new (ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2703	struct coro *coro;	3060	OUTPUT:
2704	MAGIC *mg;
2705	HV *hv;
2706	CV *cb;
2707	int i;
2708
2709	if (items > 1)
2710	{
2711	cb = coro_sv_2cv (aTHX_ ST (1));
2712
2713	if (!ix)
2714	{
2715	if (CvISXSUB (cb))
2716	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2717
2718	if (!CvROOT (cb))
2719	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2720	}
2721	}
2722
2723	Newz (0, coro, 1, struct coro);
2724	coro->args = newAV ();
2725	coro->flags = CF_NEW;
2726
2727	if (coro_first) coro_first->prev = coro;
2728	coro->next = coro_first;
2729	coro_first = coro;
2730
2731	coro->hv = hv = newHV ();
2732	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2733	mg->mg_flags |= MGf_DUP;
2734	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2735
2736	if (items > 1)
2737	{
2738	av_extend (coro->args, items - 1 + ix - 1);
2739
2740	if (ix)
2741	{
2742	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2743	cb = cv_coro_run;
2744	}
2745
2746	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2747
2748	for (i = 2; i < items; i++)
2749	av_push (coro->args, newSVsv (ST (i)));
2750	}
2751	}
2752	OUTPUT:
2753	RETVAL	3061	RETVAL
2754		3062
2755	void	3063	void
2756	transfer (...)	3064	transfer (...)
2757	PROTOTYPE: $$	3065	PROTOTYPE: $$
…		…
2768	void	3076	void
2769	_exit (int code)	3077	_exit (int code)
2770	PROTOTYPE: $	3078	PROTOTYPE: $
2771	CODE:	3079	CODE:
2772	_exit (code);	3080	_exit (code);
		3081
		3082	SV *
		3083	clone (Coro::State coro)
		3084	CODE:
		3085	{
		3086	#if CORO_CLONE
		3087	struct coro *ncoro = coro_clone (aTHX_ coro);
		3088	MAGIC *mg;
		3089	/* TODO: too much duplication */
		3090	ncoro->hv = newHV ();
		3091	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
		3092	mg->mg_flags |= MGf_DUP;
		3093	RETVAL = sv_bless (newRV_noinc ((SV *)ncoro->hv), SvSTASH (coro->hv));
		3094	#else
		3095	croak ("Coro::State->clone has not been configured into this installation of Coro, realised");
		3096	#endif
		3097	}
		3098	OUTPUT:
		3099	RETVAL
2773		3100
2774	int	3101	int
2775	cctx_stacksize (int new_stacksize = 0)	3102	cctx_stacksize (int new_stacksize = 0)
2776	PROTOTYPE: ;$	3103	PROTOTYPE: ;$
2777	CODE:	3104	CODE:
…		…
2827	eval = 1	3154	eval = 1
2828	CODE:	3155	CODE:
2829	{	3156	{
2830	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3157	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2831	{	3158	{
2832	struct coro temp;	3159	struct coro *current = SvSTATE_current;
2833		3160
2834	if (!(coro->flags & CF_RUNNING))	3161	if (current != coro)
2835	{	3162	{
2836	PUTBACK;	3163	PUTBACK;
2837	save_perl (aTHX_ &temp);	3164	save_perl (aTHX_ current);
2838	load_perl (aTHX_ coro);	3165	load_perl (aTHX_ coro);
		3166	SPAGAIN;
2839	}	3167	}
2840		3168
2841	{
2842	dSP;
2843	ENTER;
2844	SAVETMPS;
2845	PUTBACK;
2846	PUSHSTACK;	3169	PUSHSTACK;
		3170
2847	PUSHMARK (SP);	3171	PUSHMARK (SP);
		3172	PUTBACK;
2848		3173
2849	if (ix)	3174	if (ix)
2850	eval_sv (coderef, 0);	3175	eval_sv (coderef, 0);
2851	else	3176	else
2852	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	3177	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2853		3178
2854	POPSTACK;	3179	POPSTACK;
2855	SPAGAIN;	3180	SPAGAIN;
2856	FREETMPS;
2857	LEAVE;
2858	PUTBACK;
2859	}
2860		3181
2861	if (!(coro->flags & CF_RUNNING))	3182	if (current != coro)
2862	{	3183	{
		3184	PUTBACK;
2863	save_perl (aTHX_ coro);	3185	save_perl (aTHX_ coro);
2864	load_perl (aTHX_ &temp);	3186	load_perl (aTHX_ current);
2865	SPAGAIN;	3187	SPAGAIN;
2866	}	3188	}
2867	}	3189	}
2868	}	3190	}
2869		3191
…		…
2873	ALIAS:	3195	ALIAS:
2874	is_ready = CF_READY	3196	is_ready = CF_READY
2875	is_running = CF_RUNNING	3197	is_running = CF_RUNNING
2876	is_new = CF_NEW	3198	is_new = CF_NEW
2877	is_destroyed = CF_DESTROYED	3199	is_destroyed = CF_DESTROYED
		3200	is_suspended = CF_SUSPENDED
2878	CODE:	3201	CODE:
2879	RETVAL = boolSV (coro->flags & ix);	3202	RETVAL = boolSV (coro->flags & ix);
2880	OUTPUT:	3203	OUTPUT:
2881	RETVAL	3204	RETVAL
2882		3205
…		…
2886	CODE:	3209	CODE:
2887	{	3210	{
2888	struct coro *current = SvSTATE_current;	3211	struct coro *current = SvSTATE_current;
2889	SV **throwp = self == current ? &CORO_THROW : &self->except;	3212	SV **throwp = self == current ? &CORO_THROW : &self->except;
2890	SvREFCNT_dec (*throwp);	3213	SvREFCNT_dec (*throwp);
		3214	SvGETMAGIC (throw);
2891	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3215	*throwp = SvOK (throw) ? newSVsv (throw) : 0;
2892	}	3216	}
2893		3217
2894	void	3218	void
2895	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3219	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
…		…
2898		3222
2899	SV *	3223	SV *
2900	has_cctx (Coro::State coro)	3224	has_cctx (Coro::State coro)
2901	PROTOTYPE: $	3225	PROTOTYPE: $
2902	CODE:	3226	CODE:
2903	RETVAL = boolSV (!!coro->cctx);	3227	/* maybe manage the running flag differently */
		3228	RETVAL = boolSV (!!coro->cctx || (coro->flags & CF_RUNNING));
2904	OUTPUT:	3229	OUTPUT:
2905	RETVAL	3230	RETVAL
2906		3231
2907	int	3232	int
2908	is_traced (Coro::State coro)	3233	is_traced (Coro::State coro)
…		…
2928		3253
2929	void	3254	void
2930	force_cctx ()	3255	force_cctx ()
2931	PROTOTYPE:	3256	PROTOTYPE:
2932	CODE:	3257	CODE:
2933	SvSTATE_current->cctx->idle_sp = 0;	3258	cctx_current->idle_sp = 0;
2934		3259
2935	void	3260	void
2936	swap_defsv (Coro::State self)	3261	swap_defsv (Coro::State self)
2937	PROTOTYPE: $	3262	PROTOTYPE: $
2938	ALIAS:	3263	ALIAS:
…		…
2946	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	3271	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
2947		3272
2948	SV *tmp = *src; *src = *dst; *dst = tmp;	3273	SV *tmp = *src; *src = *dst; *dst = tmp;
2949	}	3274	}
2950		3275
		3276	void
		3277	cancel (Coro::State self)
		3278	CODE:
		3279	coro_state_destroy (aTHX_ self);
		3280	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
		3281
		3282
		3283	SV *
		3284	enable_times (int enabled = enable_times)
		3285	CODE:
		3286	{
		3287	RETVAL = boolSV (enable_times);
		3288
		3289	if (enabled != enable_times)
		3290	{
		3291	enable_times = enabled;
		3292
		3293	coro_times_update ();
		3294	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3295	}
		3296	}
		3297	OUTPUT:
		3298	RETVAL
		3299
		3300	void
		3301	times (Coro::State self)
		3302	PPCODE:
		3303	{
		3304	struct coro *current = SvSTATE (coro_current);
		3305
		3306	if (expect_false (current == self))
		3307	{
		3308	coro_times_update ();
		3309	coro_times_add (SvSTATE (coro_current));
		3310	}
		3311
		3312	EXTEND (SP, 2);
		3313	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3314	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3315
		3316	if (expect_false (current == self))
		3317	coro_times_sub (SvSTATE (coro_current));
		3318	}
2951		3319
2952	MODULE = Coro::State PACKAGE = Coro	3320	MODULE = Coro::State PACKAGE = Coro
2953		3321
2954	BOOT:	3322	BOOT:
2955	{	3323	{
2956	int i;
2957
2958	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
2959	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3324	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
2960	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3325	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
2961	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);	3326	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
2962	cv_coro_terminate = get_cv ( "Coro::terminate", GV_ADD);	3327	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
2963	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE);	3328	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
2964	SvREADONLY_on (coro_current);	3329	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		3330	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
		3331	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3332	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
2965		3333
2966	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3334	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
2967	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3335	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
2968	cv_pool_handler = get_cv ("Coro::_pool_handler", 0); SvREADONLY_on (cv_pool_handler);	3336	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
2969	cv_coro_new = get_cv ("Coro::new", 0); SvREADONLY_on (cv_coro_new);	3337	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);
2970		3338
2971	coro_stash = gv_stashpv ("Coro", TRUE);	3339	coro_stash = gv_stashpv ("Coro", TRUE);
2972		3340
2973	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3341	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
2974	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3342	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
2975	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	3343	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
2976	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	3344	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
2977	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	3345	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
2978	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	3346	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
2979
2980	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
2981	coro_ready[i] = newAV ();
2982		3347
2983	{	3348	{
2984	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3349	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
2985		3350
2986	coroapi.schedule = api_schedule;	3351	coroapi.schedule = api_schedule;
		3352	coroapi.schedule_to = api_schedule_to;
2987	coroapi.cede = api_cede;	3353	coroapi.cede = api_cede;
2988	coroapi.cede_notself = api_cede_notself;	3354	coroapi.cede_notself = api_cede_notself;
2989	coroapi.ready = api_ready;	3355	coroapi.ready = api_ready;
2990	coroapi.is_ready = api_is_ready;	3356	coroapi.is_ready = api_is_ready;
2991	coroapi.nready = coro_nready;	3357	coroapi.nready = coro_nready;
…		…
2995	sv_setiv (sv, (IV)&coroapi);	3361	sv_setiv (sv, (IV)&coroapi);
2996	SvREADONLY_on (sv);	3362	SvREADONLY_on (sv);
2997	}	3363	}
2998	}	3364	}
2999		3365
		3366	SV *
		3367	async (...)
		3368	PROTOTYPE: &@
		3369	CODE:
		3370	RETVAL = coro_new (coro_stash, &ST (0), items, 1);
		3371	api_ready (RETVAL);
		3372	OUTPUT:
		3373	RETVAL
		3374
		3375	void
		3376	terminate (...)
		3377	CODE:
		3378	CORO_EXECUTE_SLF_XS (slf_init_terminate);
		3379
3000	void	3380	void
3001	schedule (...)	3381	schedule (...)
3002	CODE:	3382	CODE:
3003	CORO_EXECUTE_SLF_XS (slf_init_schedule);	3383	CORO_EXECUTE_SLF_XS (slf_init_schedule);
		3384
		3385	void
		3386	schedule_to (...)
		3387	CODE:
		3388	CORO_EXECUTE_SLF_XS (slf_init_schedule_to);
		3389
		3390	void
		3391	cede_to (...)
		3392	CODE:
		3393	CORO_EXECUTE_SLF_XS (slf_init_cede_to);
3004		3394
3005	void	3395	void
3006	cede (...)	3396	cede (...)
3007	CODE:	3397	CODE:
3008	CORO_EXECUTE_SLF_XS (slf_init_cede);	3398	CORO_EXECUTE_SLF_XS (slf_init_cede);
…		…
3022	void	3412	void
3023	_set_readyhook (SV *hook)	3413	_set_readyhook (SV *hook)
3024	PROTOTYPE: $	3414	PROTOTYPE: $
3025	CODE:	3415	CODE:
3026	SvREFCNT_dec (coro_readyhook);	3416	SvREFCNT_dec (coro_readyhook);
		3417	SvGETMAGIC (hook);
		3418	if (SvOK (hook))
		3419	{
3027	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3420	coro_readyhook = newSVsv (hook);
		3421	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3422	}
		3423	else
		3424	{
		3425	coro_readyhook = 0;
		3426	CORO_READYHOOK = 0;
		3427	}
3028		3428
3029	int	3429	int
3030	prio (Coro::State coro, int newprio = 0)	3430	prio (Coro::State coro, int newprio = 0)
3031	PROTOTYPE: $;$	3431	PROTOTYPE: $;$
3032	ALIAS:	3432	ALIAS:
…		…
3038	if (items > 1)	3438	if (items > 1)
3039	{	3439	{
3040	if (ix)	3440	if (ix)
3041	newprio = coro->prio - newprio;	3441	newprio = coro->prio - newprio;
3042		3442
3043	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3443	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3044	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3444	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3045		3445
3046	coro->prio = newprio;	3446	coro->prio = newprio;
3047	}	3447	}
3048	}	3448	}
3049	OUTPUT:	3449	OUTPUT:
…		…
3064	RETVAL = coro_nready;	3464	RETVAL = coro_nready;
3065	OUTPUT:	3465	OUTPUT:
3066	RETVAL	3466	RETVAL
3067		3467
3068	void	3468	void
		3469	suspend (Coro::State self)
		3470	PROTOTYPE: $
		3471	CODE:
		3472	self->flags |= CF_SUSPENDED;
		3473
		3474	void
		3475	resume (Coro::State self)
		3476	PROTOTYPE: $
		3477	CODE:
		3478	self->flags &= ~CF_SUSPENDED;
		3479
		3480	void
3069	_pool_handler (...)	3481	_pool_handler (...)
3070	CODE:	3482	CODE:
3071	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);	3483	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3072		3484
3073	void	3485	void
…		…
3089	PUSHMARK (SP);	3501	PUSHMARK (SP);
3090	EXTEND (SP, 2);	3502	EXTEND (SP, 2);
3091	PUSHs (sv_Coro);	3503	PUSHs (sv_Coro);
3092	PUSHs ((SV *)cv_pool_handler);	3504	PUSHs ((SV *)cv_pool_handler);
3093	PUTBACK;	3505	PUTBACK;
3094	call_sv ((SV *)cv_coro_new, G_SCALAR);	3506	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3095	SPAGAIN;	3507	SPAGAIN;
3096		3508
3097	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3509	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));
3098	}	3510	}
3099		3511
…		…
3126	rouse_wait (...)	3538	rouse_wait (...)
3127	PROTOTYPE: ;$	3539	PROTOTYPE: ;$
3128	PPCODE:	3540	PPCODE:
3129	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);	3541	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3130		3542
		3543	void
		3544	on_enter (SV *block)
		3545	ALIAS:
		3546	on_leave = 1
		3547	PROTOTYPE: &
		3548	CODE:
		3549	{
		3550	struct coro *coro = SvSTATE_current;
		3551	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
		3552
		3553	block = s_get_cv_croak (block);
		3554
		3555	if (!*avp)
		3556	*avp = newAV ();
		3557
		3558	av_push (*avp, SvREFCNT_inc (block));
		3559
		3560	if (!ix)
		3561	on_enterleave_call (aTHX_ block);
		3562
		3563	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3564	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
		3565	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3566	}
		3567
3131		3568
3132	MODULE = Coro::State PACKAGE = PerlIO::cede	3569	MODULE = Coro::State PACKAGE = PerlIO::cede
3133		3570
3134	BOOT:	3571	BOOT:
3135	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3572	PerlIO_define_layer (aTHX_ &PerlIO_cede);
…		…
3138	MODULE = Coro::State PACKAGE = Coro::Semaphore	3575	MODULE = Coro::State PACKAGE = Coro::Semaphore
3139		3576
3140	SV *	3577	SV *
3141	new (SV *klass, SV *count = 0)	3578	new (SV *klass, SV *count = 0)
3142	CODE:	3579	CODE:
		3580	{
		3581	int semcnt = 1;
		3582
		3583	if (count)
		3584	{
		3585	SvGETMAGIC (count);
		3586
		3587	if (SvOK (count))
		3588	semcnt = SvIV (count);
		3589	}
		3590
3143	RETVAL = sv_bless (	3591	RETVAL = sv_bless (
3144	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),	3592	coro_waitarray_new (aTHX_ semcnt),
3145	GvSTASH (CvGV (cv))	3593	GvSTASH (CvGV (cv))
3146	);	3594	);
		3595	}
3147	OUTPUT:	3596	OUTPUT:
3148	RETVAL	3597	RETVAL
3149		3598
3150	# helper for Coro::Channel	3599	# helper for Coro::Channel and others
3151	SV *	3600	SV *
3152	_alloc (int count)	3601	_alloc (int count)
3153	CODE:	3602	CODE:
3154	RETVAL = coro_waitarray_new (aTHX_ count);	3603	RETVAL = coro_waitarray_new (aTHX_ count);
3155	OUTPUT:	3604	OUTPUT:
…		…
3213	for (i = 1; i <= wcount; ++i)	3662	for (i = 1; i <= wcount; ++i)
3214	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));	3663	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3215	}	3664	}
3216	}	3665	}
3217		3666
		3667	MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
		3668
		3669	void
		3670	_may_delete (SV *sem, int count, int extra_refs)
		3671	PPCODE:
		3672	{
		3673	AV *av = (AV *)SvRV (sem);
		3674
		3675	if (SvREFCNT ((SV *)av) == 1 + extra_refs
		3676	&& AvFILLp (av) == 0 /* no waiters, just count */
		3677	&& SvIV (AvARRAY (av)[0]) == count)
		3678	XSRETURN_YES;
		3679
		3680	XSRETURN_NO;
		3681	}
		3682
3218	MODULE = Coro::State PACKAGE = Coro::Signal	3683	MODULE = Coro::State PACKAGE = Coro::Signal
3219		3684
3220	SV *	3685	SV *
3221	new (SV *klass)	3686	new (SV *klass)
3222	CODE:	3687	CODE:
…		…
3293		3758
3294	void	3759	void
3295	_register (char *target, char *proto, SV *req)	3760	_register (char *target, char *proto, SV *req)
3296	CODE:	3761	CODE:
3297	{	3762	{
3298	CV *req_cv = coro_sv_2cv (aTHX_ req);	3763	SV *req_cv = s_get_cv_croak (req);
3299	/* newXSproto doesn't return the CV on 5.8 */	3764	/* newXSproto doesn't return the CV on 5.8 */
3300	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3765	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3301	sv_setpv ((SV *)slf_cv, proto);	3766	sv_setpv ((SV *)slf_cv, proto);
3302	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3767	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3303	}	3768	}
3304		3769
		3770	MODULE = Coro::State PACKAGE = Coro::Select
		3771
		3772	void
		3773	patch_pp_sselect ()
		3774	CODE:
		3775	if (!coro_old_pp_sselect)
		3776	{
		3777	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		3778	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		3779	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		3780	}
		3781
		3782	void
		3783	unpatch_pp_sselect ()
		3784	CODE:
		3785	if (coro_old_pp_sselect)
		3786	{
		3787	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		3788	coro_old_pp_sselect = 0;
		3789	}
		3790
		3791

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines