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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.325 by root, Sun Nov 23 06:48:45 2008 UTC vs.
Revision 1.384 by root, Thu Feb 17 01:32:18 2011 UTC

		1	/* this works around a bug in mingw32 providing a non-working setjmp */
		2	#define USE_NO_MINGW_SETJMP_TWO_ARGS
		3
		4	#define NDEBUG 1
		5
1	#include "libcoro/coro.c"	6	#include "libcoro/coro.c"
2		7
3	#define PERL_NO_GET_CONTEXT	8	#define PERL_NO_GET_CONTEXT
4	#define PERL_EXT	9	#define PERL_EXT
5		10
6	#include "EXTERN.h"	11	#include "EXTERN.h"
7	#include "perl.h"	12	#include "perl.h"
8	#include "XSUB.h"	13	#include "XSUB.h"
9	#include "perliol.h"	14	#include "perliol.h"
10		15
11	#include "patchlevel.h"	16	#include "schmorp.h"
12		17
13	#include <stdio.h>	18	#include <stdio.h>
14	#include <errno.h>	19	#include <errno.h>
15	#include <assert.h>	20	#include <assert.h>
		21
		22	#ifndef SVs_PADSTALE
		23	# define SVs_PADSTALE 0
		24	#endif
16		25
17	#ifdef WIN32	26	#ifdef WIN32
18	# undef setjmp	27	# undef setjmp
19	# undef longjmp	28	# undef longjmp
20	# undef _exit	29	# undef _exit
…		…
51	#endif	60	#endif
52		61
53	/* the maximum number of idle cctx that will be pooled */	62	/* the maximum number of idle cctx that will be pooled */
54	static int cctx_max_idle = 4;	63	static int cctx_max_idle = 4;
55		64
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	65	#if !__i386 && !__x86_64 && !__powerpc && !__m68k && !__alpha && !__mips && !__sparc64
116	# undef CORO_STACKGUARD	66	# undef CORO_STACKGUARD
117	#endif	67	#endif
118		68
119	#ifndef CORO_STACKGUARD	69	#ifndef CORO_STACKGUARD
…		…
133	#else	83	#else
134	# define dSTACKLEVEL volatile void *stacklevel	84	# define dSTACKLEVEL volatile void *stacklevel
135	# define STACKLEVEL ((void *)&stacklevel)	85	# define STACKLEVEL ((void *)&stacklevel)
136	#endif	86	#endif
137		87
138	#define IN_DESTRUCT (PL_main_cv == Nullcv)	88	#define IN_DESTRUCT PL_dirty
139		89
140	#if __GNUC__ >= 3	90	#if __GNUC__ >= 3
141	# define attribute(x) __attribute__(x)	91	# define attribute(x) __attribute__(x)
142	# define expect(expr,value) __builtin_expect ((expr),(value))	92	# define expect(expr,value) __builtin_expect ((expr), (value))
143	# define INLINE static inline	93	# define INLINE static inline
144	#else	94	#else
145	# define attribute(x)	95	# define attribute(x)
146	# define expect(expr,value) (expr)	96	# define expect(expr,value) (expr)
147	# define INLINE static	97	# define INLINE static
…		…
159	# if CORO_PTHREAD	109	# if CORO_PTHREAD
160	static void *coro_thx;	110	static void *coro_thx;
161	# endif	111	# endif
162	#endif	112	#endif
163		113
		114	#ifdef __linux
		115	# include <time.h> /* for timespec */
		116	# include <syscall.h> /* for SYS_* */
		117	# ifdef SYS_clock_gettime
		118	# define coro_clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		119	# define CORO_CLOCK_MONOTONIC 1
		120	# define CORO_CLOCK_THREAD_CPUTIME_ID 3
		121	# endif
		122	#endif
		123
164	static double (*nvtime)(); /* so why doesn't it take void? */	124	static double (*nvtime)(); /* so why doesn't it take void? */
		125	static void (*u2time)(pTHX_ UV ret[2]);
165		126
166	/* we hijack an hopefully unused CV flag for our purposes */	127	/* we hijack an hopefully unused CV flag for our purposes */
167	#define CVf_SLF 0x4000	128	#define CVf_SLF 0x4000
168	static OP *pp_slf (pTHX);	129	static OP *pp_slf (pTHX);
169		130
…		…
175	static HV *coro_state_stash, *coro_stash;	136	static HV *coro_state_stash, *coro_stash;
176	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */	137	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
177		138
178	static AV *av_destroy; /* destruction queue */	139	static AV *av_destroy; /* destruction queue */
179	static SV *sv_manager; /* the manager coro */	140	static SV *sv_manager; /* the manager coro */
		141	static SV *sv_idle; /* $Coro::idle */
180		142
181	static GV *irsgv; /* $/ */	143	static GV *irsgv; /* $/ */
182	static GV *stdoutgv; /* *STDOUT */	144	static GV *stdoutgv; /* *STDOUT */
183	static SV *rv_diehook;	145	static SV *rv_diehook;
184	static SV *rv_warnhook;	146	static SV *rv_warnhook;
…		…
189	static SV *sv_pool_size;	151	static SV *sv_pool_size;
190	static SV *sv_async_pool_idle; /* description string */	152	static SV *sv_async_pool_idle; /* description string */
191	static AV *av_async_pool; /* idle pool */	153	static AV *av_async_pool; /* idle pool */
192	static SV *sv_Coro; /* class string */	154	static SV *sv_Coro; /* class string */
193	static CV *cv_pool_handler;	155	static CV *cv_pool_handler;
194	static CV *cv_coro_state_new;
195		156
196	/* Coro::AnyEvent */	157	/* Coro::AnyEvent */
197	static SV *sv_activity;	158	static SV *sv_activity;
		159
		160	/* enable processtime/realtime profiling */
		161	static char enable_times;
		162	typedef U32 coro_ts[2];
		163	static coro_ts time_real, time_cpu;
		164	static char times_valid;
198		165
199	static struct coro_cctx *cctx_first;	166	static struct coro_cctx *cctx_first;
200	static int cctx_count, cctx_idle;	167	static int cctx_count, cctx_idle;
201		168
202	enum {	169	enum {
…		…
237	enum {	204	enum {
238	CF_RUNNING = 0x0001, /* coroutine is running */	205	CF_RUNNING = 0x0001, /* coroutine is running */
239	CF_READY = 0x0002, /* coroutine is ready */	206	CF_READY = 0x0002, /* coroutine is ready */
240	CF_NEW = 0x0004, /* has never been switched to */	207	CF_NEW = 0x0004, /* has never been switched to */
241	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	208	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
		209	CF_SUSPENDED = 0x0010, /* coroutine can't be scheduled */
242	};	210	};
243		211
244	/* the structure where most of the perl state is stored, overlaid on the cxstack */	212	/* the structure where most of the perl state is stored, overlaid on the cxstack */
245	typedef struct	213	typedef struct
246	{	214	{
247	SV *defsv;	215	SV *defsv;
248	AV *defav;	216	AV *defav;
249	SV *errsv;	217	SV *errsv;
250	SV *irsgv;	218	SV *irsgv;
		219	HV *hinthv;
251	#define VAR(name,type) type name;	220	#define VAR(name,type) type name;
252	# include "state.h"	221	# include "state.h"
253	#undef VAR	222	#undef VAR
254	} perl_slots;	223	} perl_slots;
255		224
…		…
257		226
258	/* this is a structure representing a perl-level coroutine */	227	/* this is a structure representing a perl-level coroutine */
259	struct coro {	228	struct coro {
260	/* the C coroutine allocated to this perl coroutine, if any */	229	/* the C coroutine allocated to this perl coroutine, if any */
261	coro_cctx *cctx;	230	coro_cctx *cctx;
		231
		232	/* ready queue */
		233	struct coro *next_ready;
262		234
263	/* state data */	235	/* state data */
264	struct CoroSLF slf_frame; /* saved slf frame */	236	struct CoroSLF slf_frame; /* saved slf frame */
265	AV *mainstack;	237	AV *mainstack;
266	perl_slots *slot; /* basically the saved sp */	238	perl_slots *slot; /* basically the saved sp */
…		…
268	CV *startcv; /* the CV to execute */	240	CV *startcv; /* the CV to execute */
269	AV *args; /* data associated with this coroutine (initial args) */	241	AV *args; /* data associated with this coroutine (initial args) */
270	int refcnt; /* coroutines are refcounted, yes */	242	int refcnt; /* coroutines are refcounted, yes */
271	int flags; /* CF_ flags */	243	int flags; /* CF_ flags */
272	HV *hv; /* the perl hash associated with this coro, if any */	244	HV *hv; /* the perl hash associated with this coro, if any */
273	void (*on_destroy)(pTHX_ struct coro *coro);	245	void (*on_destroy)(pTHX_ struct coro *coro); /* for temporary use by xs in critical sections */
274		246
275	/* statistics */	247	/* statistics */
276	int usecount; /* number of transfers to this coro */	248	int usecount; /* number of transfers to this coro */
277		249
278	/* coro process data */	250	/* coro process data */
…		…
283	/* async_pool */	255	/* async_pool */
284	SV *saved_deffh;	256	SV *saved_deffh;
285	SV *invoke_cb;	257	SV *invoke_cb;
286	AV *invoke_av;	258	AV *invoke_av;
287		259
		260	/* on_enter/on_leave */
		261	AV *on_enter;
		262	AV *on_leave;
		263
		264	/* swap_sv */
		265	AV *swap_sv;
		266
		267	/* times */
		268	coro_ts t_cpu, t_real;
		269
288	/* linked list */	270	/* linked list */
289	struct coro *next, *prev;	271	struct coro *next, *prev;
290	};	272	};
291		273
292	typedef struct coro *Coro__State;	274	typedef struct coro *Coro__State;
…		…
297	/* the mainr easonw e don't support windows process emulation */	279	/* the mainr easonw e don't support windows process emulation */
298	static struct CoroSLF slf_frame; /* the current slf frame */	280	static struct CoroSLF slf_frame; /* the current slf frame */
299		281
300	/** Coro ********************************************************************/	282	/** Coro ********************************************************************/
301		283
302	#define PRIO_MAX 3	284	#define CORO_PRIO_MAX 3
303	#define PRIO_HIGH 1	285	#define CORO_PRIO_HIGH 1
304	#define PRIO_NORMAL 0	286	#define CORO_PRIO_NORMAL 0
305	#define PRIO_LOW -1	287	#define CORO_PRIO_LOW -1
306	#define PRIO_IDLE -3	288	#define CORO_PRIO_IDLE -3
307	#define PRIO_MIN -4	289	#define CORO_PRIO_MIN -4
308		290
309	/* for Coro.pm */	291	/* for Coro.pm */
310	static SV *coro_current;	292	static SV *coro_current;
311	static SV *coro_readyhook;	293	static SV *coro_readyhook;
312	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];	294	static struct coro *coro_ready [CORO_PRIO_MAX - CORO_PRIO_MIN + 1][2]; /* head|tail */
313	static CV *cv_coro_run, *cv_coro_terminate;	295	static CV *cv_coro_run, *cv_coro_terminate;
314	static struct coro *coro_first;	296	static struct coro *coro_first;
315	#define coro_nready coroapi.nready	297	#define coro_nready coroapi.nready
		298
		299	/** Coro::Select ************************************************************/
		300
		301	static OP *(*coro_old_pp_sselect) (pTHX);
		302	static SV *coro_select_select;
		303
		304	/* horrible hack, but if it works... */
		305	static OP *
		306	coro_pp_sselect (pTHX)
		307	{
		308	dSP;
		309	PUSHMARK (SP - 4); /* fake argument list */
		310	XPUSHs (coro_select_select);
		311	PUTBACK;
		312
		313	/* entersub is an UNOP, select a LISTOP... keep your fingers crossed */
		314	PL_op->op_flags |= OPf_STACKED;
		315	PL_op->op_private = 0;
		316	return PL_ppaddr [OP_ENTERSUB](aTHX);
		317	}
316		318
317	/** lowlevel stuff **********************************************************/	319	/** lowlevel stuff **********************************************************/
318		320
319	static SV *	321	static SV *
320	coro_get_sv (pTHX_ const char *name, int create)	322	coro_get_sv (pTHX_ const char *name, int create)
…		…
344	get_hv (name, create);	346	get_hv (name, create);
345	#endif	347	#endif
346	return get_hv (name, create);	348	return get_hv (name, create);
347	}	349	}
348		350
349	/* may croak */	351	INLINE void
350	INLINE CV *	352	coro_times_update ()
351	coro_sv_2cv (pTHX_ SV *sv)
352	{	353	{
		354	#ifdef coro_clock_gettime
		355	struct timespec ts;
		356
		357	ts.tv_sec = ts.tv_nsec = 0;
		358	coro_clock_gettime (CORO_CLOCK_THREAD_CPUTIME_ID, &ts);
		359	time_cpu [0] = ts.tv_sec; time_cpu [1] = ts.tv_nsec;
		360
		361	ts.tv_sec = ts.tv_nsec = 0;
		362	coro_clock_gettime (CORO_CLOCK_MONOTONIC, &ts);
		363	time_real [0] = ts.tv_sec; time_real [1] = ts.tv_nsec;
		364	#else
		365	dTHX;
		366	UV tv[2];
		367
		368	u2time (aTHX_ tv);
		369	time_real [0] = tv [0];
		370	time_real [1] = tv [1] * 1000;
		371	#endif
		372	}
		373
		374	INLINE void
		375	coro_times_add (struct coro *c)
		376	{
		377	c->t_real [1] += time_real [1];
		378	if (c->t_real [1] > 1000000000) { c->t_real [1] -= 1000000000; ++c->t_real [0]; }
		379	c->t_real [0] += time_real [0];
		380
		381	c->t_cpu [1] += time_cpu [1];
		382	if (c->t_cpu [1] > 1000000000) { c->t_cpu [1] -= 1000000000; ++c->t_cpu [0]; }
		383	c->t_cpu [0] += time_cpu [0];
		384	}
		385
		386	INLINE void
		387	coro_times_sub (struct coro *c)
		388	{
		389	if (c->t_real [1] < time_real [1]) { c->t_real [1] += 1000000000; --c->t_real [0]; }
		390	c->t_real [1] -= time_real [1];
		391	c->t_real [0] -= time_real [0];
		392
		393	if (c->t_cpu [1] < time_cpu [1]) { c->t_cpu [1] += 1000000000; --c->t_cpu [0]; }
		394	c->t_cpu [1] -= time_cpu [1];
		395	c->t_cpu [0] -= time_cpu [0];
		396	}
		397
		398	/*****************************************************************************/
		399	/* magic glue */
		400
		401	#define CORO_MAGIC_type_cv 26
		402	#define CORO_MAGIC_type_state PERL_MAGIC_ext
		403
		404	#define CORO_MAGIC_NN(sv, type) \
		405	(expect_true (SvMAGIC (sv)->mg_type == type) \
		406	? SvMAGIC (sv) \
		407	: mg_find (sv, type))
		408
		409	#define CORO_MAGIC(sv, type) \
		410	(expect_true (SvMAGIC (sv)) \
		411	? CORO_MAGIC_NN (sv, type) \
		412	: 0)
		413
		414	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		415	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
		416
		417	INLINE struct coro *
		418	SvSTATE_ (pTHX_ SV *coro)
		419	{
353	HV *st;	420	HV *stash;
354	GV *gvp;	421	MAGIC *mg;
355	return sv_2cv (sv, &st, &gvp, 0);	422
		423	if (SvROK (coro))
		424	coro = SvRV (coro);
		425
		426	if (expect_false (SvTYPE (coro) != SVt_PVHV))
		427	croak ("Coro::State object required");
		428
		429	stash = SvSTASH (coro);
		430	if (expect_false (stash != coro_stash && stash != coro_state_stash))
		431	{
		432	/* very slow, but rare, check */
		433	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
		434	croak ("Coro::State object required");
		435	}
		436
		437	mg = CORO_MAGIC_state (coro);
		438	return (struct coro *)mg->mg_ptr;
356	}	439	}
		440
		441	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
		442
		443	/* faster than SvSTATE, but expects a coroutine hv */
		444	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
		445	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
		446
		447	/*****************************************************************************/
		448	/* padlist management and caching */
357		449
358	static AV *	450	static AV *
359	coro_derive_padlist (pTHX_ CV *cv)	451	coro_derive_padlist (pTHX_ CV *cv)
360	{	452	{
361	AV *padlist = CvPADLIST (cv);	453	AV *padlist = CvPADLIST (cv);
…		…
369	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	461	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
370	#endif	462	#endif
371	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	463	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
372	--AvFILLp (padlist);	464	--AvFILLp (padlist);
373		465
374	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));	466	av_store (newpadlist, 0, SvREFCNT_inc_NN (AvARRAY (padlist)[0]));
375	av_store (newpadlist, 1, (SV *)newpad);	467	av_store (newpadlist, 1, (SV *)newpad);
376		468
377	return newpadlist;	469	return newpadlist;
378	}	470	}
379		471
380	static void	472	static void
381	free_padlist (pTHX_ AV *padlist)	473	free_padlist (pTHX_ AV *padlist)
382	{	474	{
383	/* may be during global destruction */	475	/* may be during global destruction */
384	if (SvREFCNT (padlist))	476	if (!IN_DESTRUCT)
385	{	477	{
386	I32 i = AvFILLp (padlist);	478	I32 i = AvFILLp (padlist);
387	while (i >= 0)	479
		480	while (i > 0) /* special-case index 0 */
388	{	481	{
389	SV **svp = av_fetch (padlist, i--, FALSE);	482	/* we try to be extra-careful here */
390	if (svp)	483	AV *av = (AV *)AvARRAY (padlist)[i--];
391	{	484	I32 j = AvFILLp (av);
392	SV *sv;	485
393	while (&PL_sv_undef != (sv = av_pop ((AV *)*svp)))	486	while (j >= 0)
		487	SvREFCNT_dec (AvARRAY (av)[j--]);
		488
		489	AvFILLp (av) = -1;
394	SvREFCNT_dec (sv);	490	SvREFCNT_dec (av);
395
396	SvREFCNT_dec (*svp);
397	}
398	}	491	}
399		492
		493	SvREFCNT_dec (AvARRAY (padlist)[0]);
		494
		495	AvFILLp (padlist) = -1;
400	SvREFCNT_dec ((SV*)padlist);	496	SvREFCNT_dec ((SV*)padlist);
401	}	497	}
402	}	498	}
403		499
404	static int	500	static int
405	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)	501	coro_cv_free (pTHX_ SV *sv, MAGIC *mg)
406	{	502	{
407	AV *padlist;	503	AV *padlist;
408	AV *av = (AV *)mg->mg_obj;	504	AV *av = (AV *)mg->mg_obj;
		505
		506	/* perl manages to free our internal AV and _then_ call us */
		507	if (IN_DESTRUCT)
		508	return 0;
409		509
410	/* casting is fun. */	510	/* casting is fun. */
411	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	511	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
412	free_padlist (aTHX_ padlist);	512	free_padlist (aTHX_ padlist);
413		513
414	SvREFCNT_dec (av); /* sv_magicext increased the refcount */	514	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
415		515
416	return 0;	516	return 0;
417	}	517	}
418
419	#define CORO_MAGIC_type_cv 26
420	#define CORO_MAGIC_type_state PERL_MAGIC_ext
421		518
422	static MGVTBL coro_cv_vtbl = {	519	static MGVTBL coro_cv_vtbl = {
423	0, 0, 0, 0,	520	0, 0, 0, 0,
424	coro_cv_free	521	coro_cv_free
425	};	522	};
426
427	#define CORO_MAGIC_NN(sv, type) \
428	(expect_true (SvMAGIC (sv)->mg_type == type) \
429	? SvMAGIC (sv) \
430	: mg_find (sv, type))
431
432	#define CORO_MAGIC(sv, type) \
433	(expect_true (SvMAGIC (sv)) \
434	? CORO_MAGIC_NN (sv, type) \
435	: 0)
436
437	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
438	#define CORO_MAGIC_state(sv) CORO_MAGIC_NN (((SV *)(sv)), CORO_MAGIC_type_state)
439
440	INLINE struct coro *
441	SvSTATE_ (pTHX_ SV *coro)
442	{
443	HV *stash;
444	MAGIC *mg;
445
446	if (SvROK (coro))
447	coro = SvRV (coro);
448
449	if (expect_false (SvTYPE (coro) != SVt_PVHV))
450	croak ("Coro::State object required");
451
452	stash = SvSTASH (coro);
453	if (expect_false (stash != coro_stash && stash != coro_state_stash))
454	{
455	/* very slow, but rare, check */
456	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
457	croak ("Coro::State object required");
458	}
459
460	mg = CORO_MAGIC_state (coro);
461	return (struct coro *)mg->mg_ptr;
462	}
463
464	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
465
466	/* faster than SvSTATE, but expects a coroutine hv */
467	#define SvSTATE_hv(hv) ((struct coro *)CORO_MAGIC_NN ((SV *)hv, CORO_MAGIC_type_state)->mg_ptr)
468	#define SvSTATE_current SvSTATE_hv (SvRV (coro_current))
469		523
470	/* the next two functions merely cache the padlists */	524	/* the next two functions merely cache the padlists */
471	static void	525	static void
472	get_padlist (pTHX_ CV *cv)	526	get_padlist (pTHX_ CV *cv)
473	{	527	{
…		…
501	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);	555	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
502		556
503	av = (AV *)mg->mg_obj;	557	av = (AV *)mg->mg_obj;
504		558
505	if (expect_false (AvFILLp (av) >= AvMAX (av)))	559	if (expect_false (AvFILLp (av) >= AvMAX (av)))
506	av_extend (av, AvMAX (av) + 1);	560	av_extend (av, AvFILLp (av) + 1);
507		561
508	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	562	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
509	}	563	}
510		564
511	/** load & save, init *******************************************************/	565	/** load & save, init *******************************************************/
		566
		567	/* swap sv heads, at least logically */
		568	static void
		569	swap_svs (pTHX_ Coro__State c)
		570	{
		571	int i;
		572
		573	for (i = 0; i <= AvFILLp (c->swap_sv); )
		574	{
		575	SV *a = AvARRAY (c->swap_sv)[i++];
		576	SV *b = AvARRAY (c->swap_sv)[i++];
		577
		578	const U32 keep = SVs_PADSTALE | SVs_PADTMP | SVs_PADMY; /* keep these flags */
		579	SV tmp;
		580
		581	/* swap sv_any */
		582	SvANY (&tmp) = SvANY (a); SvANY (a) = SvANY (b); SvANY (b) = SvANY (&tmp);
		583
		584	/* swap sv_flags */
		585	SvFLAGS (&tmp) = SvFLAGS (a);
		586	SvFLAGS (a) = (SvFLAGS (a) & keep) | (SvFLAGS (b ) & ~keep);
		587	SvFLAGS (b) = (SvFLAGS (b) & keep) | (SvFLAGS (&tmp) & ~keep);
		588
		589	#if PERL_VERSION_ATLEAST (5,10,0)
		590	/* perl 5.10 complicates this _quite_ a bit, but it also is
		591	* is much faster, so no quarrels here. alternatively, we could
		592	* sv_upgrade to avoid this.
		593	*/
		594	{
		595	/* swap sv_u */
		596	tmp.sv_u = a->sv_u; a->sv_u = b->sv_u; b->sv_u = tmp.sv_u;
		597
		598	/* if SvANY points to the head, we need to adjust the pointers,
		599	* as the pointer for a still points to b, and maybe vice versa.
		600	*/
		601	#define svany_in_head(type) \
		602	(((1 << SVt_NULL) | (1 << SVt_BIND) | (1 << SVt_IV) | (1 << SVt_RV)) & (1 << (type)))
		603
		604	if (svany_in_head (SvTYPE (a)))
		605	SvANY (a) = (void *)((PTRV)SvANY (a) - (PTRV)b + (PTRV)a);
		606
		607	if (svany_in_head (SvTYPE (b)))
		608	SvANY (b) = (void *)((PTRV)SvANY (b) - (PTRV)a + (PTRV)b);
		609	}
		610	#endif
		611	}
		612	}
		613
		614	#define SWAP_SVS(coro) \
		615	if (expect_false ((coro)->swap_sv)) \
		616	swap_svs (aTHX_ (coro))
		617
		618	static void
		619	on_enterleave_call (pTHX_ SV *cb);
512		620
513	static void	621	static void
514	load_perl (pTHX_ Coro__State c)	622	load_perl (pTHX_ Coro__State c)
515	{	623	{
516	perl_slots *slot = c->slot;	624	perl_slots *slot = c->slot;
517	c->slot = 0;	625	c->slot = 0;
518		626
519	PL_mainstack = c->mainstack;	627	PL_mainstack = c->mainstack;
520		628
521	GvSV (PL_defgv) = slot->defsv;	629	GvSV (PL_defgv) = slot->defsv;
522	GvAV (PL_defgv) = slot->defav;	630	GvAV (PL_defgv) = slot->defav;
523	GvSV (PL_errgv) = slot->errsv;	631	GvSV (PL_errgv) = slot->errsv;
524	GvSV (irsgv) = slot->irsgv;	632	GvSV (irsgv) = slot->irsgv;
		633	GvHV (PL_hintgv) = slot->hinthv;
525		634
526	#define VAR(name,type) PL_ ## name = slot->name;	635	#define VAR(name,type) PL_ ## name = slot->name;
527	# include "state.h"	636	# include "state.h"
528	#undef VAR	637	#undef VAR
529		638
…		…
543	PUTBACK;	652	PUTBACK;
544	}	653	}
545		654
546	slf_frame = c->slf_frame;	655	slf_frame = c->slf_frame;
547	CORO_THROW = c->except;	656	CORO_THROW = c->except;
		657
		658	if (expect_false (enable_times))
		659	{
		660	if (expect_false (!times_valid))
		661	coro_times_update ();
		662
		663	coro_times_sub (c);
		664	}
		665
		666	if (expect_false (c->on_enter))
		667	{
		668	int i;
		669
		670	for (i = 0; i <= AvFILLp (c->on_enter); ++i)
		671	on_enterleave_call (aTHX_ AvARRAY (c->on_enter)[i]);
		672	}
		673
		674	SWAP_SVS (c);
548	}	675	}
549		676
550	static void	677	static void
551	save_perl (pTHX_ Coro__State c)	678	save_perl (pTHX_ Coro__State c)
552	{	679	{
		680	SWAP_SVS (c);
		681
		682	if (expect_false (c->on_leave))
		683	{
		684	int i;
		685
		686	for (i = AvFILLp (c->on_leave); i >= 0; --i)
		687	on_enterleave_call (aTHX_ AvARRAY (c->on_leave)[i]);
		688	}
		689
		690	times_valid = 0;
		691
		692	if (expect_false (enable_times))
		693	{
		694	coro_times_update (); times_valid = 1;
		695	coro_times_add (c);
		696	}
		697
553	c->except = CORO_THROW;	698	c->except = CORO_THROW;
554	c->slf_frame = slf_frame;	699	c->slf_frame = slf_frame;
555		700
556	{	701	{
557	dSP;	702	dSP;
…		…
570	{	715	{
571	while (expect_true (cxix >= 0))	716	while (expect_true (cxix >= 0))
572	{	717	{
573	PERL_CONTEXT *cx = &ccstk[cxix--];	718	PERL_CONTEXT *cx = &ccstk[cxix--];
574		719
575	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))	720	if (expect_true (CxTYPE (cx) == CXt_SUB) || expect_false (CxTYPE (cx) == CXt_FORMAT))
576	{	721	{
577	CV *cv = cx->blk_sub.cv;	722	CV *cv = cx->blk_sub.cv;
578		723
579	if (expect_true (CvDEPTH (cv)))	724	if (expect_true (CvDEPTH (cv)))
580	{	725	{
…		…
604	/* we manually unroll here, as usually 2 slots is enough */	749	/* we manually unroll here, as usually 2 slots is enough */
605	if (SLOT_COUNT >= 1) CXINC;	750	if (SLOT_COUNT >= 1) CXINC;
606	if (SLOT_COUNT >= 2) CXINC;	751	if (SLOT_COUNT >= 2) CXINC;
607	if (SLOT_COUNT >= 3) CXINC;	752	if (SLOT_COUNT >= 3) CXINC;
608	{	753	{
609	int i;	754	unsigned int i;
610	for (i = 3; i < SLOT_COUNT; ++i)	755	for (i = 3; i < SLOT_COUNT; ++i)
611	CXINC;	756	CXINC;
612	}	757	}
613	cxstack_ix -= SLOT_COUNT; /* undo allocation */	758	cxstack_ix -= SLOT_COUNT; /* undo allocation */
614		759
615	c->mainstack = PL_mainstack;	760	c->mainstack = PL_mainstack;
616		761
617	{	762	{
618	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);	763	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
619		764
620	slot->defav = GvAV (PL_defgv);	765	slot->defav = GvAV (PL_defgv);
621	slot->defsv = DEFSV;	766	slot->defsv = DEFSV;
622	slot->errsv = ERRSV;	767	slot->errsv = ERRSV;
623	slot->irsgv = GvSV (irsgv);	768	slot->irsgv = GvSV (irsgv);
		769	slot->hinthv = GvHV (PL_hintgv);
624		770
625	#define VAR(name,type) slot->name = PL_ ## name;	771	#define VAR(name,type) slot->name = PL_ ## name;
626	# include "state.h"	772	# include "state.h"
627	#undef VAR	773	#undef VAR
628	}	774	}
…		…
755	#endif	901	#endif
756		902
757	/*	903	/*
758	* This overrides the default magic get method of %SIG elements.	904	* This overrides the default magic get method of %SIG elements.
759	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook	905	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
760	* and instead of tryign to save and restore the hash elements, we just provide	906	* and instead of trying to save and restore the hash elements, we just provide
761	* readback here.	907	* readback here.
762	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
763	* not expecting this to actually change the hook. This is a potential problem
764	* when a schedule happens then, but we ignore this.
765	*/	908	*/
766	static int	909	static int
767	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)	910	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
768	{	911	{
769	const char *s = MgPV_nolen_const (mg);	912	const char *s = MgPV_nolen_const (mg);
…		…
822	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;	965	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
823		966
824	if (svp)	967	if (svp)
825	{	968	{
826	SV *old = *svp;	969	SV *old = *svp;
827	*svp = newSVsv (sv);	970	*svp = SvOK (sv) ? newSVsv (sv) : 0;
828	SvREFCNT_dec (old);	971	SvREFCNT_dec (old);
829	return 0;	972	return 0;
830	}	973	}
831	}	974	}
832		975
…		…
850	slf_check_repeat (pTHX_ struct CoroSLF *frame)	993	slf_check_repeat (pTHX_ struct CoroSLF *frame)
851	{	994	{
852	return 1;	995	return 1;
853	}	996	}
854		997
855	static UNOP coro_setup_op;	998	static UNOP init_perl_op;
856		999
857	static void NOINLINE /* noinline to keep it out of the transfer fast path */	1000	static void NOINLINE /* noinline to keep it out of the transfer fast path */
858	coro_setup (pTHX_ struct coro *coro)	1001	init_perl (pTHX_ struct coro *coro)
859	{	1002	{
860	/*	1003	/*
861	* emulate part of the perl startup here.	1004	* emulate part of the perl startup here.
862	*/	1005	*/
863	coro_init_stacks (aTHX);	1006	coro_init_stacks (aTHX);
864		1007
865	PL_runops = RUNOPS_DEFAULT;	1008	PL_runops = RUNOPS_DEFAULT;
866	PL_curcop = &PL_compiling;	1009	PL_curcop = &PL_compiling;
867	PL_in_eval = EVAL_NULL;	1010	PL_in_eval = EVAL_NULL;
868	PL_comppad = 0;	1011	PL_comppad = 0;
		1012	PL_comppad_name = 0;
		1013	PL_comppad_name_fill = 0;
		1014	PL_comppad_name_floor = 0;
869	PL_curpm = 0;	1015	PL_curpm = 0;
870	PL_curpad = 0;	1016	PL_curpad = 0;
871	PL_localizing = 0;	1017	PL_localizing = 0;
872	PL_dirty = 0;
873	PL_restartop = 0;	1018	PL_restartop = 0;
874	#if PERL_VERSION_ATLEAST (5,10,0)	1019	#if PERL_VERSION_ATLEAST (5,10,0)
875	PL_parser = 0;	1020	PL_parser = 0;
876	#endif	1021	#endif
		1022	PL_hints = 0;
877		1023
878	/* recreate the die/warn hooks */	1024	/* recreate the die/warn hooks */
879	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );	1025	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
880	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);	1026	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
881		1027
882	GvSV (PL_defgv) = newSV (0);	1028	GvSV (PL_defgv) = newSV (0);
883	GvAV (PL_defgv) = coro->args; coro->args = 0;	1029	GvAV (PL_defgv) = coro->args; coro->args = 0;
884	GvSV (PL_errgv) = newSV (0);	1030	GvSV (PL_errgv) = newSV (0);
885	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	1031	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
		1032	GvHV (PL_hintgv) = 0;
886	PL_rs = newSVsv (GvSV (irsgv));	1033	PL_rs = newSVsv (GvSV (irsgv));
887	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);	1034	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
888		1035
889	{	1036	{
890	dSP;	1037	dSP;
…		…
907	*/	1054	*/
908	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */	1055	slf_frame.prepare = prepare_nop; /* provide a nop function for an eventual pp_slf */
909	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */	1056	slf_frame.check = slf_check_nop; /* signal pp_slf to not repeat */
910		1057
911	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */	1058	/* and we have to provide the pp_slf op in any case, so pp_slf can skip it */
912	coro_setup_op.op_next = PL_op;	1059	init_perl_op.op_next = PL_op;
913	coro_setup_op.op_type = OP_ENTERSUB;	1060	init_perl_op.op_type = OP_ENTERSUB;
914	coro_setup_op.op_ppaddr = pp_slf;	1061	init_perl_op.op_ppaddr = pp_slf;
915	/* no flags etc. required, as an init function won't be called */	1062	/* no flags etc. required, as an init function won't be called */
916		1063
917	PL_op = (OP *)&coro_setup_op;	1064	PL_op = (OP *)&init_perl_op;
918		1065
919	/* copy throw, in case it was set before coro_setup */	1066	/* copy throw, in case it was set before init_perl */
920	CORO_THROW = coro->except;	1067	CORO_THROW = coro->except;
921	}
922		1068
		1069	SWAP_SVS (coro);
		1070
		1071	if (expect_false (enable_times))
		1072	{
		1073	coro_times_update ();
		1074	coro_times_sub (coro);
		1075	}
		1076	}
		1077
923	static void	1078	static void
924	coro_destruct (pTHX_ struct coro *coro)	1079	coro_unwind_stacks (pTHX)
925	{	1080	{
926	if (!IN_DESTRUCT)	1081	if (!IN_DESTRUCT)
927	{	1082	{
928	/* restore all saved variables and stuff */	1083	/* restore all saved variables and stuff */
929	LEAVE_SCOPE (0);	1084	LEAVE_SCOPE (0);
…		…
937	POPSTACK_TO (PL_mainstack);	1092	POPSTACK_TO (PL_mainstack);
938		1093
939	/* unwind main stack */	1094	/* unwind main stack */
940	dounwind (-1);	1095	dounwind (-1);
941	}	1096	}
		1097	}
942		1098
943	SvREFCNT_dec (GvSV (PL_defgv));	1099	static void
944	SvREFCNT_dec (GvAV (PL_defgv));	1100	destroy_perl (pTHX_ struct coro *coro)
945	SvREFCNT_dec (GvSV (PL_errgv));	1101	{
946	SvREFCNT_dec (PL_defoutgv);	1102	SV *svf [9];
947	SvREFCNT_dec (PL_rs);
948	SvREFCNT_dec (GvSV (irsgv));
949		1103
950	SvREFCNT_dec (PL_diehook);
951	SvREFCNT_dec (PL_warnhook);
952		1104	{
		1105	struct coro *current = SvSTATE_current;
		1106
		1107	assert (("FATAL: tried to destroy currently running coroutine", coro->mainstack != PL_mainstack));
		1108
		1109	save_perl (aTHX_ current);
		1110	load_perl (aTHX_ coro);
		1111
		1112	coro_unwind_stacks (aTHX);
		1113	coro_destruct_stacks (aTHX);
		1114
		1115	/* restore swapped sv's */
		1116	SWAP_SVS (coro);
		1117
		1118	// now save some sv's to be free'd later
		1119	svf [0] = GvSV (PL_defgv);
		1120	svf [1] = (SV *)GvAV (PL_defgv);
		1121	svf [2] = GvSV (PL_errgv);
		1122	svf [3] = (SV *)PL_defoutgv;
		1123	svf [4] = PL_rs;
		1124	svf [5] = GvSV (irsgv);
		1125	svf [6] = (SV *)GvHV (PL_hintgv);
		1126	svf [7] = PL_diehook;
		1127	svf [8] = PL_warnhook;
		1128	assert (9 == sizeof (svf) / sizeof (*svf));
		1129
		1130	load_perl (aTHX_ current);
		1131	}
		1132
		1133	{
		1134	unsigned int i;
		1135
		1136	for (i = 0; i < sizeof (svf) / sizeof (*svf); ++i)
		1137	SvREFCNT_dec (svf [i]);
		1138
953	SvREFCNT_dec (coro->saved_deffh);	1139	SvREFCNT_dec (coro->saved_deffh);
954	SvREFCNT_dec (coro->rouse_cb);	1140	SvREFCNT_dec (coro->rouse_cb);
955	SvREFCNT_dec (coro->invoke_cb);	1141	SvREFCNT_dec (coro->invoke_cb);
956	SvREFCNT_dec (coro->invoke_av);	1142	SvREFCNT_dec (coro->invoke_av);
957		1143	}
958	coro_destruct_stacks (aTHX);
959	}	1144	}
960		1145
961	INLINE void	1146	INLINE void
962	free_coro_mortal (pTHX)	1147	free_coro_mortal (pTHX)
963	{	1148	{
…		…
1160	/* somebody or something will hit me for both perl_run and PL_restartop */	1345	/* somebody or something will hit me for both perl_run and PL_restartop */
1161	PL_restartop = PL_op;	1346	PL_restartop = PL_op;
1162	perl_run (PL_curinterp);	1347	perl_run (PL_curinterp);
1163	/*	1348	/*
1164	* Unfortunately, there is no way to get at the return values of the	1349	* Unfortunately, there is no way to get at the return values of the
1165	* coro body here, as perl_run destroys these	1350	* coro body here, as perl_run destroys these. Likewise, we cannot catch
		1351	* runtime errors here, as this is just a random interpreter, not a thread.
1166	*/	1352	*/
1167		1353
1168	/*	1354	/*
1169	* If perl-run returns we assume exit() was being called or the coro	1355	* If perl-run returns we assume exit() was being called or the coro
1170	* fell off the end, which seems to be the only valid (non-bug)	1356	* fell off the end, which seems to be the only valid (non-bug)
1171	* reason for perl_run to return. We try to exit by jumping to the	1357	* reason for perl_run to return. We try to exit by jumping to the
1172	* bootstrap-time "top" top_env, as we cannot restore the "main"	1358	* bootstrap-time "top" top_env, as we cannot restore the "main"
1173	* coroutine as Coro has no such concept	1359	* coroutine as Coro has no such concept.
		1360	* This actually isn't valid with the pthread backend, but OSes requiring
		1361	* that backend are too broken to do it in a standards-compliant way.
1174	*/	1362	*/
1175	PL_top_env = main_top_env;	1363	PL_top_env = main_top_env;
1176	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1364	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
1177	}	1365	}
1178	}	1366	}
…		…
1255	cctx_destroy (coro_cctx *cctx)	1443	cctx_destroy (coro_cctx *cctx)
1256	{	1444	{
1257	if (!cctx)	1445	if (!cctx)
1258	return;	1446	return;
1259		1447
1260	assert (cctx != cctx_current);//D temporary	1448	assert (("FATAL: tried to destroy current cctx", cctx != cctx_current));//D temporary?
1261		1449
1262	--cctx_count;	1450	--cctx_count;
1263	coro_destroy (&cctx->cctx);	1451	coro_destroy (&cctx->cctx);
1264		1452
1265	/* coro_transfer creates new, empty cctx's */	1453	/* coro_transfer creates new, empty cctx's */
…		…
1329	/* TODO: throwing up here is considered harmful */	1517	/* TODO: throwing up here is considered harmful */
1330		1518
1331	if (expect_true (prev != next))	1519	if (expect_true (prev != next))
1332	{	1520	{
1333	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))	1521	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
1334	croak ("Coro::State::transfer called with a suspended prev Coro::State, but can only transfer from running or new states,");	1522	croak ("Coro::State::transfer called with a blocked prev Coro::State, but can only transfer from running or new states,");
1335		1523
1336	if (expect_false (next->flags & CF_RUNNING))
1337	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states,");
1338
1339	if (expect_false (next->flags & CF_DESTROYED))	1524	if (expect_false (next->flags & (CF_RUNNING | CF_DESTROYED | CF_SUSPENDED)))
1340	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states,");	1525	croak ("Coro::State::transfer called with running, destroyed or suspended next Coro::State, but can only transfer to inactive states,");
1341		1526
1342	#if !PERL_VERSION_ATLEAST (5,10,0)	1527	#if !PERL_VERSION_ATLEAST (5,10,0)
1343	if (expect_false (PL_lex_state != LEX_NOTPARSING))	1528	if (expect_false (PL_lex_state != LEX_NOTPARSING))
1344	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");	1529	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version,");
1345	#endif	1530	#endif
…		…
1378	if (expect_false (next->flags & CF_NEW))	1563	if (expect_false (next->flags & CF_NEW))
1379	{	1564	{
1380	/* need to start coroutine */	1565	/* need to start coroutine */
1381	next->flags &= ~CF_NEW;	1566	next->flags &= ~CF_NEW;
1382	/* setup coroutine call */	1567	/* setup coroutine call */
1383	coro_setup (aTHX_ next);	1568	init_perl (aTHX_ next);
1384	}	1569	}
1385	else	1570	else
1386	load_perl (aTHX_ next);	1571	load_perl (aTHX_ next);
1387
1388	assert (!prev->cctx);//D temporary
1389		1572
1390	/* possibly untie and reuse the cctx */	1573	/* possibly untie and reuse the cctx */
1391	if (expect_true (	1574	if (expect_true (
1392	cctx_current->idle_sp == STACKLEVEL	1575	cctx_current->idle_sp == STACKLEVEL
1393	&& !(cctx_current->flags & CC_TRACE)	1576	&& !(cctx_current->flags & CC_TRACE)
…		…
1435	coro_state_destroy (pTHX_ struct coro *coro)	1618	coro_state_destroy (pTHX_ struct coro *coro)
1436	{	1619	{
1437	if (coro->flags & CF_DESTROYED)	1620	if (coro->flags & CF_DESTROYED)
1438	return 0;	1621	return 0;
1439		1622
1440	if (coro->on_destroy)	1623	if (coro->on_destroy && !PL_dirty)
1441	coro->on_destroy (aTHX_ coro);	1624	coro->on_destroy (aTHX_ coro);
1442		1625
1443	coro->flags |= CF_DESTROYED;	1626	coro->flags |= CF_DESTROYED;
1444		1627
1445	if (coro->flags & CF_READY)	1628	if (coro->flags & CF_READY)
…		…
1449	--coro_nready;	1632	--coro_nready;
1450	}	1633	}
1451	else	1634	else
1452	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */	1635	coro->flags |= CF_READY; /* make sure it is NOT put into the readyqueue */
1453		1636
1454	if (coro->mainstack && coro->mainstack != main_mainstack)	1637	if (coro->mainstack
1455	{	1638	&& coro->mainstack != main_mainstack
1456	struct coro temp;	1639	&& coro->slot
1457		1640	&& !PL_dirty)
1458	assert (("FATAL: tried to destroy currently running coroutine (please report)", !(coro->flags & CF_RUNNING)));
1459
1460	save_perl (aTHX_ &temp);
1461	load_perl (aTHX_ coro);	1641	destroy_perl (aTHX_ coro);
1462		1642
1463	coro_destruct (aTHX_ coro);	1643	if (coro->next) coro->next->prev = coro->prev;
1464		1644	if (coro->prev) coro->prev->next = coro->next;
1465	load_perl (aTHX_ &temp);	1645	if (coro == coro_first) coro_first = coro->next;
1466
1467	coro->slot = 0;
1468	}
1469		1646
1470	cctx_destroy (coro->cctx);	1647	cctx_destroy (coro->cctx);
1471	SvREFCNT_dec (coro->startcv);	1648	SvREFCNT_dec (coro->startcv);
1472	SvREFCNT_dec (coro->args);	1649	SvREFCNT_dec (coro->args);
		1650	SvREFCNT_dec (coro->swap_sv);
1473	SvREFCNT_dec (CORO_THROW);	1651	SvREFCNT_dec (CORO_THROW);
1474
1475	if (coro->next) coro->next->prev = coro->prev;
1476	if (coro->prev) coro->prev->next = coro->next;
1477	if (coro == coro_first) coro_first = coro->next;
1478		1652
1479	return 1;	1653	return 1;
1480	}	1654	}
1481		1655
1482	static int	1656	static int
…		…
1532		1706
1533	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1707	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1534	TRANSFER (ta, 1);	1708	TRANSFER (ta, 1);
1535	}	1709	}
1536		1710
1537	/*****************************************************************************/
1538	/* gensub: simple closure generation utility */
1539
1540	#define GENSUB_ARG CvXSUBANY (cv).any_ptr
1541
1542	/* create a closure from XS, returns a code reference */
1543	/* the arg can be accessed via GENSUB_ARG from the callback */
1544	/* the callback must use dXSARGS/XSRETURN */
1545	static SV *
1546	gensub (pTHX_ void (*xsub)(pTHX_ CV *), void *arg)
1547	{
1548	CV *cv = (CV *)newSV (0);
1549
1550	sv_upgrade ((SV *)cv, SVt_PVCV);
1551
1552	CvANON_on (cv);
1553	CvISXSUB_on (cv);
1554	CvXSUB (cv) = xsub;
1555	GENSUB_ARG = arg;
1556
1557	return newRV_noinc ((SV *)cv);
1558	}
1559
1560	/** Coro ********************************************************************/	1711	/** Coro ********************************************************************/
1561		1712
1562	INLINE void	1713	INLINE void
1563	coro_enq (pTHX_ struct coro *coro)	1714	coro_enq (pTHX_ struct coro *coro)
1564	{	1715	{
1565	av_push (coro_ready [coro->prio - PRIO_MIN], SvREFCNT_inc_NN (coro->hv));	1716	struct coro **ready = coro_ready [coro->prio - CORO_PRIO_MIN];
1566	}
1567		1717
1568	INLINE SV *	1718	SvREFCNT_inc_NN (coro->hv);
		1719
		1720	coro->next_ready = 0;
		1721	*(ready [0] ? &ready [1]->next_ready : &ready [0]) = coro;
		1722	ready [1] = coro;
		1723	}
		1724
		1725	INLINE struct coro *
1569	coro_deq (pTHX)	1726	coro_deq (pTHX)
1570	{	1727	{
1571	int prio;	1728	int prio;
1572		1729
1573	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )	1730	for (prio = CORO_PRIO_MAX - CORO_PRIO_MIN + 1; --prio >= 0; )
1574	if (AvFILLp (coro_ready [prio]) >= 0)	1731	{
1575	return av_shift (coro_ready [prio]);	1732	struct coro **ready = coro_ready [prio];
		1733
		1734	if (ready [0])
		1735	{
		1736	struct coro *coro = ready [0];
		1737	ready [0] = coro->next_ready;
		1738	return coro;
		1739	}
		1740	}
1576		1741
1577	return 0;	1742	return 0;
		1743	}
		1744
		1745	static void
		1746	invoke_sv_ready_hook_helper (void)
		1747	{
		1748	dTHX;
		1749	dSP;
		1750
		1751	ENTER;
		1752	SAVETMPS;
		1753
		1754	PUSHMARK (SP);
		1755	PUTBACK;
		1756	call_sv (coro_readyhook, G_VOID | G_DISCARD);
		1757
		1758	FREETMPS;
		1759	LEAVE;
1578	}	1760	}
1579		1761
1580	static int	1762	static int
1581	api_ready (pTHX_ SV *coro_sv)	1763	api_ready (pTHX_ SV *coro_sv)
1582	{	1764	{
1583	struct coro *coro;
1584	SV *sv_hook;
1585	void (*xs_hook)(void);
1586
1587	if (SvROK (coro_sv))
1588	coro_sv = SvRV (coro_sv);
1589
1590	coro = SvSTATE (coro_sv);	1765	struct coro *coro = SvSTATE (coro_sv);
1591		1766
1592	if (coro->flags & CF_READY)	1767	if (coro->flags & CF_READY)
1593	return 0;	1768	return 0;
1594		1769
1595	coro->flags |= CF_READY;	1770	coro->flags |= CF_READY;
1596		1771
1597	sv_hook = coro_nready ? 0 : coro_readyhook;
1598	xs_hook = coro_nready ? 0 : coroapi.readyhook;
1599
1600	coro_enq (aTHX_ coro);	1772	coro_enq (aTHX_ coro);
1601	++coro_nready;
1602		1773
1603	if (sv_hook)	1774	if (!coro_nready++)
1604	{	1775	if (coroapi.readyhook)
1605	dSP;	1776	coroapi.readyhook ();
1606
1607	ENTER;
1608	SAVETMPS;
1609
1610	PUSHMARK (SP);
1611	PUTBACK;
1612	call_sv (sv_hook, G_VOID | G_DISCARD);
1613
1614	FREETMPS;
1615	LEAVE;
1616	}
1617
1618	if (xs_hook)
1619	xs_hook ();
1620		1777
1621	return 1;	1778	return 1;
1622	}	1779	}
1623		1780
1624	static int	1781	static int
…		…
1647	static void	1804	static void
1648	prepare_schedule (pTHX_ struct coro_transfer_args *ta)	1805	prepare_schedule (pTHX_ struct coro_transfer_args *ta)
1649	{	1806	{
1650	for (;;)	1807	for (;;)
1651	{	1808	{
1652	SV *next_sv = coro_deq (aTHX);	1809	struct coro *next = coro_deq (aTHX);
1653		1810
1654	if (expect_true (next_sv))	1811	if (expect_true (next))
1655	{	1812	{
1656	struct coro *next = SvSTATE_hv (next_sv);
1657
1658	/* cannot transfer to destroyed coros, skip and look for next */	1813	/* cannot transfer to destroyed coros, skip and look for next */
1659	if (expect_false (next->flags & CF_DESTROYED))	1814	if (expect_false (next->flags & (CF_DESTROYED | CF_SUSPENDED)))
1660	SvREFCNT_dec (next_sv); /* coro_nready has already been taken care of by destroy */	1815	SvREFCNT_dec (next->hv); /* coro_nready has already been taken care of by destroy */
1661	else	1816	else
1662	{	1817	{
1663	next->flags &= ~CF_READY;	1818	next->flags &= ~CF_READY;
1664	--coro_nready;	1819	--coro_nready;
1665		1820
…		…
1668	}	1823	}
1669	}	1824	}
1670	else	1825	else
1671	{	1826	{
1672	/* nothing to schedule: call the idle handler */	1827	/* nothing to schedule: call the idle handler */
		1828	if (SvROK (sv_idle)
		1829	&& SvOBJECT (SvRV (sv_idle)))
		1830	{
		1831	if (SvRV (sv_idle) == SvRV (coro_current))
		1832	croak ("FATAL: $Coro::IDLE blocked itself - did you try to block inside an event loop callback? Caught");
		1833
		1834	++coro_nready; /* hack so that api_ready doesn't invoke ready hook */
		1835	api_ready (aTHX_ SvRV (sv_idle));
		1836	--coro_nready;
		1837	}
		1838	else
		1839	{
		1840	/* TODO: deprecated, remove, cannot work reliably *//*D*/
1673	dSP;	1841	dSP;
1674		1842
1675	ENTER;	1843	ENTER;
1676	SAVETMPS;	1844	SAVETMPS;
1677		1845
1678	PUSHMARK (SP);	1846	PUSHMARK (SP);
1679	PUTBACK;	1847	PUTBACK;
1680	call_sv (get_sv ("Coro::idle", FALSE), G_VOID | G_DISCARD);	1848	call_sv (sv_idle, G_VOID | G_DISCARD);
1681		1849
1682	FREETMPS;	1850	FREETMPS;
1683	LEAVE;	1851	LEAVE;
		1852	}
1684	}	1853	}
1685	}	1854	}
1686	}	1855	}
1687		1856
1688	INLINE void	1857	INLINE void
…		…
1822	{	1991	{
1823	int i;	1992	int i;
1824	HV *hv = (HV *)SvRV (coro_current);	1993	HV *hv = (HV *)SvRV (coro_current);
1825	AV *av = newAV ();	1994	AV *av = newAV ();
1826		1995
		1996	/* items are actually not so common, so optimise for this case */
		1997	if (items)
		1998	{
1827	av_extend (av, items - 1);	1999	av_extend (av, items - 1);
		2000
1828	for (i = 0; i < items; ++i)	2001	for (i = 0; i < items; ++i)
1829	av_push (av, SvREFCNT_inc_NN (arg [i]));	2002	av_push (av, SvREFCNT_inc_NN (arg [i]));
		2003	}
1830		2004
1831	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);	2005	hv_store (hv, "_status", sizeof ("_status") - 1, newRV_noinc ((SV *)av), 0);
1832		2006
1833	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */	2007	av_push (av_destroy, (SV *)newRV_inc ((SV *)hv)); /* RVinc for perl */
1834	api_ready (aTHX_ sv_manager);	2008	api_ready (aTHX_ sv_manager);
1835		2009
1836	frame->prepare = prepare_schedule;	2010	frame->prepare = prepare_schedule;
1837	frame->check = slf_check_repeat;	2011	frame->check = slf_check_repeat;
		2012
		2013	/* as a minor optimisation, we could unwind all stacks here */
		2014	/* but that puts extra pressure on pp_slf, and is not worth much */
		2015	/*coro_unwind_stacks (aTHX);*/
1838	}	2016	}
1839		2017
1840	/*****************************************************************************/	2018	/*****************************************************************************/
1841	/* async pool handler */	2019	/* async pool handler */
1842		2020
…		…
1920		2098
1921	static void	2099	static void
1922	coro_rouse_callback (pTHX_ CV *cv)	2100	coro_rouse_callback (pTHX_ CV *cv)
1923	{	2101	{
1924	dXSARGS;	2102	dXSARGS;
1925	SV *data = (SV *)GENSUB_ARG;	2103	SV *data = (SV *)S_GENSUB_ARG;
1926		2104
1927	if (SvTYPE (SvRV (data)) != SVt_PVAV)	2105	if (SvTYPE (SvRV (data)) != SVt_PVAV)
1928	{	2106	{
1929	/* first call, set args */	2107	/* first call, set args */
		2108	SV *coro = SvRV (data);
1930	AV *av = newAV ();	2109	AV *av = newAV ();
1931	SV *coro = SvRV (data);
1932		2110
1933	SvRV_set (data, (SV *)av);	2111	SvRV_set (data, (SV *)av);
1934	api_ready (aTHX_ coro);
1935	SvREFCNT_dec (coro);
1936		2112
1937	/* better take a full copy of the arguments */	2113	/* better take a full copy of the arguments */
1938	while (items--)	2114	while (items--)
1939	av_store (av, items, newSVsv (ST (items)));	2115	av_store (av, items, newSVsv (ST (items)));
		2116
		2117	api_ready (aTHX_ coro);
		2118	SvREFCNT_dec (coro);
1940	}	2119	}
1941		2120
1942	XSRETURN_EMPTY;	2121	XSRETURN_EMPTY;
1943	}	2122	}
1944		2123
…		…
1961		2140
1962	EXTEND (SP, AvFILLp (av) + 1);	2141	EXTEND (SP, AvFILLp (av) + 1);
1963	for (i = 0; i <= AvFILLp (av); ++i)	2142	for (i = 0; i <= AvFILLp (av); ++i)
1964	PUSHs (sv_2mortal (AvARRAY (av)[i]));	2143	PUSHs (sv_2mortal (AvARRAY (av)[i]));
1965		2144
1966	/* we have stolen the elements, so ste length to zero and free */	2145	/* we have stolen the elements, so set length to zero and free */
1967	AvFILLp (av) = -1;	2146	AvFILLp (av) = -1;
1968	av_undef (av);	2147	av_undef (av);
1969		2148
1970	PUTBACK;	2149	PUTBACK;
1971	}	2150	}
…		…
1995	|| SvTYPE (SvRV (cb)) != SVt_PVCV	2174	|| SvTYPE (SvRV (cb)) != SVt_PVCV
1996	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)	2175	|| CvXSUB ((CV *)SvRV (cb)) != coro_rouse_callback)
1997	croak ("Coro::rouse_wait called with illegal callback argument,");	2176	croak ("Coro::rouse_wait called with illegal callback argument,");
1998		2177
1999	{	2178	{
2000	CV *cv = (CV *)SvRV (cb); /* for GENSUB_ARG */	2179	CV *cv = (CV *)SvRV (cb); /* for S_GENSUB_ARG */
2001	SV *data = (SV *)GENSUB_ARG;	2180	SV *data = (SV *)S_GENSUB_ARG;
2002		2181
2003	frame->data = (void *)data;	2182	frame->data = (void *)data;
2004	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;	2183	frame->prepare = SvTYPE (SvRV (data)) == SVt_PVAV ? prepare_nop : prepare_schedule;
2005	frame->check = slf_check_rouse_wait;	2184	frame->check = slf_check_rouse_wait;
2006	}	2185	}
…		…
2010	coro_new_rouse_cb (pTHX)	2189	coro_new_rouse_cb (pTHX)
2011	{	2190	{
2012	HV *hv = (HV *)SvRV (coro_current);	2191	HV *hv = (HV *)SvRV (coro_current);
2013	struct coro *coro = SvSTATE_hv (hv);	2192	struct coro *coro = SvSTATE_hv (hv);
2014	SV *data = newRV_inc ((SV *)hv);	2193	SV *data = newRV_inc ((SV *)hv);
2015	SV *cb = gensub (aTHX_ coro_rouse_callback, (void *)data);	2194	SV *cb = s_gensub (aTHX_ coro_rouse_callback, (void *)data);
2016		2195
2017	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);	2196	sv_magicext (SvRV (cb), data, CORO_MAGIC_type_rouse, 0, 0, 0);
2018	SvREFCNT_dec (data); /* magicext increases the refcount */	2197	SvREFCNT_dec (data); /* magicext increases the refcount */
2019		2198
2020	SvREFCNT_dec (coro->rouse_cb);	2199	SvREFCNT_dec (coro->rouse_cb);
…		…
2245	if (PL_op->op_flags & OPf_STACKED)	2424	if (PL_op->op_flags & OPf_STACKED)
2246	{	2425	{
2247	if (items > slf_arga)	2426	if (items > slf_arga)
2248	{	2427	{
2249	slf_arga = items;	2428	slf_arga = items;
2250	free (slf_argv);	2429	Safefree (slf_argv);
2251	slf_argv = malloc (slf_arga * sizeof (SV *));	2430	New (0, slf_argv, slf_arga, SV *);
2252	}	2431	}
2253		2432
2254	slf_argc = items;	2433	slf_argc = items;
2255		2434
2256	for (i = 0; i < items; ++i)	2435	for (i = 0; i < items; ++i)
…		…
2261		2440
2262	PL_op->op_ppaddr = pp_slf;	2441	PL_op->op_ppaddr = pp_slf;
2263	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */	2442	/*PL_op->op_type = OP_CUSTOM; /* we do behave like entersub still */
2264		2443
2265	PL_op = (OP *)&slf_restore;	2444	PL_op = (OP *)&slf_restore;
		2445	}
		2446
		2447	/*****************************************************************************/
		2448	/* dynamic wind */
		2449
		2450	static void
		2451	on_enterleave_call (pTHX_ SV *cb)
		2452	{
		2453	dSP;
		2454
		2455	PUSHSTACK;
		2456
		2457	PUSHMARK (SP);
		2458	PUTBACK;
		2459	call_sv (cb, G_VOID | G_DISCARD);
		2460	SPAGAIN;
		2461
		2462	POPSTACK;
		2463	}
		2464
		2465	static SV *
		2466	coro_avp_pop_and_free (pTHX_ AV **avp)
		2467	{
		2468	AV *av = *avp;
		2469	SV *res = av_pop (av);
		2470
		2471	if (AvFILLp (av) < 0)
		2472	{
		2473	*avp = 0;
		2474	SvREFCNT_dec (av);
		2475	}
		2476
		2477	return res;
		2478	}
		2479
		2480	static void
		2481	coro_pop_on_enter (pTHX_ void *coro)
		2482	{
		2483	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_enter);
		2484	SvREFCNT_dec (cb);
		2485	}
		2486
		2487	static void
		2488	coro_pop_on_leave (pTHX_ void *coro)
		2489	{
		2490	SV *cb = coro_avp_pop_and_free (aTHX_ &((struct coro *)coro)->on_leave);
		2491	on_enterleave_call (aTHX_ sv_2mortal (cb));
2266	}	2492	}
2267		2493
2268	/*****************************************************************************/	2494	/*****************************************************************************/
2269	/* PerlIO::cede */	2495	/* PerlIO::cede */
2270		2496
…		…
2344	/* Coro::Semaphore & Coro::Signal */	2570	/* Coro::Semaphore & Coro::Signal */
2345		2571
2346	static SV *	2572	static SV *
2347	coro_waitarray_new (pTHX_ int count)	2573	coro_waitarray_new (pTHX_ int count)
2348	{	2574	{
2349	/* a semaphore contains a counter IV in $sem->[0] and any waiters after that */	2575	/* a waitarray=semaphore contains a counter IV in $sem->[0] and any waiters after that */
2350	AV *av = newAV ();	2576	AV *av = newAV ();
2351	SV **ary;	2577	SV **ary;
2352		2578
2353	/* unfortunately, building manually saves memory */	2579	/* unfortunately, building manually saves memory */
2354	Newx (ary, 2, SV *);	2580	Newx (ary, 2, SV *);
2355	AvALLOC (av) = ary;	2581	AvALLOC (av) = ary;
		2582	#if PERL_VERSION_ATLEAST (5,10,0)
2356	/*AvARRAY (av) = ary;*/	2583	AvARRAY (av) = ary;
		2584	#else
2357	SvPVX ((SV *)av) = (char *)ary; /* 5.8.8 needs this syntax instead of AvARRAY = ary */	2585	/* 5.8.8 needs this syntax instead of AvARRAY = ary, yet */
		2586	/* -DDEBUGGING flags this as a bug, despite it perfectly working */
		2587	SvPVX ((SV *)av) = (char *)ary;
		2588	#endif
2358	AvMAX (av) = 1;	2589	AvMAX (av) = 1;
2359	AvFILLp (av) = 0;	2590	AvFILLp (av) = 0;
2360	ary [0] = newSViv (count);	2591	ary [0] = newSViv (count);
2361		2592
2362	return newRV_noinc ((SV *)av);	2593	return newRV_noinc ((SV *)av);
…		…
2491	{	2722	{
2492	if (items >= 2)	2723	if (items >= 2)
2493	{	2724	{
2494	/* callback form */	2725	/* callback form */
2495	AV *av = (AV *)SvRV (arg [0]);	2726	AV *av = (AV *)SvRV (arg [0]);
2496	CV *cb_cv = coro_sv_2cv (aTHX_ arg [1]);	2727	SV *cb_cv = s_get_cv_croak (arg [1]);
2497		2728
2498	av_push (av, (SV *)SvREFCNT_inc_NN (cb_cv));	2729	av_push (av, SvREFCNT_inc_NN (cb_cv));
2499		2730
2500	if (SvIVX (AvARRAY (av)[0]) > 0)	2731	if (SvIVX (AvARRAY (av)[0]) > 0)
2501	coro_semaphore_adjust (aTHX_ av, 0);	2732	coro_semaphore_adjust (aTHX_ av, 0);
2502		2733
2503	frame->prepare = prepare_nop;	2734	frame->prepare = prepare_nop;
…		…
2527	AvARRAY (av)[0] = AvARRAY (av)[1];	2758	AvARRAY (av)[0] = AvARRAY (av)[1];
2528	AvARRAY (av)[1] = cb;	2759	AvARRAY (av)[1] = cb;
2529		2760
2530	cb = av_shift (av);	2761	cb = av_shift (av);
2531		2762
		2763	if (SvTYPE (cb) == SVt_PVCV)
		2764	{
		2765	dSP;
		2766	PUSHMARK (SP);
		2767	XPUSHs (sv_2mortal (newRV_inc ((SV *)av)));
		2768	PUTBACK;
		2769	call_sv (cb, G_VOID | G_DISCARD | G_EVAL | G_KEEPERR);
		2770	}
		2771	else
		2772	{
2532	api_ready (aTHX_ cb);	2773	api_ready (aTHX_ cb);
2533	sv_setiv (cb, 0); /* signal waiter */	2774	sv_setiv (cb, 0); /* signal waiter */
		2775	}
		2776
2534	SvREFCNT_dec (cb);	2777	SvREFCNT_dec (cb);
2535		2778
2536	--count;	2779	--count;
2537	}	2780	}
2538	}	2781	}
…		…
2547	static void	2790	static void
2548	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)	2791	slf_init_signal_wait (pTHX_ struct CoroSLF *frame, CV *cv, SV **arg, int items)
2549	{	2792	{
2550	AV *av = (AV *)SvRV (arg [0]);	2793	AV *av = (AV *)SvRV (arg [0]);
2551		2794
		2795	if (items >= 2)
		2796	{
		2797	SV *cb_cv = s_get_cv_croak (arg [1]);
		2798	av_push (av, SvREFCNT_inc_NN (cb_cv));
		2799
2552	if (SvIVX (AvARRAY (av)[0]))	2800	if (SvIVX (AvARRAY (av)[0]))
		2801	coro_signal_wake (aTHX_ av, 1); /* must be the only waiter */
		2802
		2803	frame->prepare = prepare_nop;
		2804	frame->check = slf_check_nop;
		2805	}
		2806	else if (SvIVX (AvARRAY (av)[0]))
2553	{	2807	{
2554	SvIVX (AvARRAY (av)[0]) = 0;	2808	SvIVX (AvARRAY (av)[0]) = 0;
2555	frame->prepare = prepare_nop;	2809	frame->prepare = prepare_nop;
2556	frame->check = slf_check_nop;	2810	frame->check = slf_check_nop;
2557	}	2811	}
2558	else	2812	else
2559	{	2813	{
2560	SV *waiter = newRV_inc (SvRV (coro_current)); /* owned by signal av */	2814	SV *waiter = newSVsv (coro_current); /* owned by signal av */
2561		2815
2562	av_push (av, waiter);	2816	av_push (av, waiter);
2563		2817
2564	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */	2818	frame->data = (void *)sv_2mortal (SvREFCNT_inc_NN (waiter)); /* owned by process */
2565	frame->prepare = prepare_schedule;	2819	frame->prepare = prepare_schedule;
…		…
2583		2837
2584	static void	2838	static void
2585	coro_aio_callback (pTHX_ CV *cv)	2839	coro_aio_callback (pTHX_ CV *cv)
2586	{	2840	{
2587	dXSARGS;	2841	dXSARGS;
2588	AV *state = (AV *)GENSUB_ARG;	2842	AV *state = (AV *)S_GENSUB_ARG;
2589	SV *coro = av_pop (state);	2843	SV *coro = av_pop (state);
2590	SV *data_sv = newSV (sizeof (struct io_state));	2844	SV *data_sv = newSV (sizeof (struct io_state));
2591		2845
2592	av_extend (state, items - 1);	2846	av_extend (state, items - 1);
2593		2847
…		…
2707		2961
2708	for (i = 0; i < items; ++i)	2962	for (i = 0; i < items; ++i)
2709	PUSHs (arg [i]);	2963	PUSHs (arg [i]);
2710		2964
2711	/* now push the callback closure */	2965	/* now push the callback closure */
2712	PUSHs (sv_2mortal (gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));	2966	PUSHs (sv_2mortal (s_gensub (aTHX_ coro_aio_callback, (void *)SvREFCNT_inc_NN ((SV *)state))));
2713		2967
2714	/* now call the AIO function - we assume our request is uncancelable */	2968	/* now call the AIO function - we assume our request is uncancelable */
2715	PUTBACK;	2969	PUTBACK;
2716	call_sv ((SV *)req, G_VOID | G_DISCARD);	2970	call_sv ((SV *)req, G_VOID | G_DISCARD);
2717	}	2971	}
2718		2972
2719	/* now that the requets is going, we loop toll we have a result */	2973	/* now that the request is going, we loop till we have a result */
2720	frame->data = (void *)state;	2974	frame->data = (void *)state;
2721	frame->prepare = prepare_schedule;	2975	frame->prepare = prepare_schedule;
2722	frame->check = slf_check_aio_req;	2976	frame->check = slf_check_aio_req;
2723	}	2977	}
2724		2978
…		…
2735	/*****************************************************************************/	2989	/*****************************************************************************/
2736		2990
2737	#if CORO_CLONE	2991	#if CORO_CLONE
2738	# include "clone.c"	2992	# include "clone.c"
2739	#endif	2993	#endif
		2994
		2995	/*****************************************************************************/
		2996
		2997	static SV *
		2998	coro_new (pTHX_ HV *stash, SV **argv, int argc, int is_coro)
		2999	{
		3000	SV *coro_sv;
		3001	struct coro *coro;
		3002	MAGIC *mg;
		3003	HV *hv;
		3004	SV *cb;
		3005	int i;
		3006
		3007	if (argc > 0)
		3008	{
		3009	cb = s_get_cv_croak (argv [0]);
		3010
		3011	if (!is_coro)
		3012	{
		3013	if (CvISXSUB (cb))
		3014	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
		3015
		3016	if (!CvROOT (cb))
		3017	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
		3018	}
		3019	}
		3020
		3021	Newz (0, coro, 1, struct coro);
		3022	coro->args = newAV ();
		3023	coro->flags = CF_NEW;
		3024
		3025	if (coro_first) coro_first->prev = coro;
		3026	coro->next = coro_first;
		3027	coro_first = coro;
		3028
		3029	coro->hv = hv = newHV ();
		3030	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		3031	mg->mg_flags |= MGf_DUP;
		3032	coro_sv = sv_bless (newRV_noinc ((SV *)hv), stash);
		3033
		3034	if (argc > 0)
		3035	{
		3036	av_extend (coro->args, argc + is_coro - 1);
		3037
		3038	if (is_coro)
		3039	{
		3040	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
		3041	cb = (SV *)cv_coro_run;
		3042	}
		3043
		3044	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
		3045
		3046	for (i = 1; i < argc; i++)
		3047	av_push (coro->args, newSVsv (argv [i]));
		3048	}
		3049
		3050	return coro_sv;
		3051	}
2740		3052
2741	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	3053	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
2742		3054
2743	PROTOTYPES: DISABLE	3055	PROTOTYPES: DISABLE
2744		3056
…		…
2804		3116
2805	if (!svp) croak ("Time::HiRes is required");	3117	if (!svp) croak ("Time::HiRes is required");
2806	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");	3118	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
2807		3119
2808	nvtime = INT2PTR (double (*)(), SvIV (*svp));	3120	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		3121
		3122	svp = hv_fetch (PL_modglobal, "Time::U2time", 12, 0);
		3123	u2time = INT2PTR (void (*)(pTHX_ UV ret[2]), SvIV (*svp));
2809	}	3124	}
2810		3125
2811	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	3126	assert (("PRIO_NORMAL must be 0", !CORO_PRIO_NORMAL));
2812	}	3127	}
2813		3128
2814	SV *	3129	SV *
2815	new (char *klass, ...)	3130	new (SV *klass, ...)
2816	ALIAS:	3131	ALIAS:
2817	Coro::new = 1	3132	Coro::new = 1
2818	CODE:	3133	CODE:
2819	{	3134	RETVAL = coro_new (aTHX_ ix ? coro_stash : coro_state_stash, &ST (1), items - 1, ix);
2820	struct coro *coro;	3135	OUTPUT:
2821	MAGIC *mg;
2822	HV *hv;
2823	CV *cb;
2824	int i;
2825
2826	if (items > 1)
2827	{
2828	cb = coro_sv_2cv (aTHX_ ST (1));
2829
2830	if (!ix)
2831	{
2832	if (CvISXSUB (cb))
2833	croak ("Coro::State doesn't support XS functions as coroutine start, caught");
2834
2835	if (!CvROOT (cb))
2836	croak ("Coro::State doesn't support autoloaded or undefined functions as coroutine start, caught");
2837	}
2838	}
2839
2840	Newz (0, coro, 1, struct coro);
2841	coro->args = newAV ();
2842	coro->flags = CF_NEW;
2843
2844	if (coro_first) coro_first->prev = coro;
2845	coro->next = coro_first;
2846	coro_first = coro;
2847
2848	coro->hv = hv = newHV ();
2849	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
2850	mg->mg_flags |= MGf_DUP;
2851	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
2852
2853	if (items > 1)
2854	{
2855	av_extend (coro->args, items - 1 + ix - 1);
2856
2857	if (ix)
2858	{
2859	av_push (coro->args, SvREFCNT_inc_NN ((SV *)cb));
2860	cb = cv_coro_run;
2861	}
2862
2863	coro->startcv = (CV *)SvREFCNT_inc_NN ((SV *)cb);
2864
2865	for (i = 2; i < items; i++)
2866	av_push (coro->args, newSVsv (ST (i)));
2867	}
2868	}
2869	OUTPUT:
2870	RETVAL	3136	RETVAL
2871		3137
2872	void	3138	void
2873	transfer (...)	3139	transfer (...)
2874	PROTOTYPE: $$	3140	PROTOTYPE: $$
…		…
2891	SV *	3157	SV *
2892	clone (Coro::State coro)	3158	clone (Coro::State coro)
2893	CODE:	3159	CODE:
2894	{	3160	{
2895	#if CORO_CLONE	3161	#if CORO_CLONE
2896	struct coro *ncoro = coro_clone (coro);	3162	struct coro *ncoro = coro_clone (aTHX_ coro);
2897	MAGIC *mg;	3163	MAGIC *mg;
2898	/* TODO: too much duplication */	3164	/* TODO: too much duplication */
2899	ncoro->hv = newHV ();	3165	ncoro->hv = newHV ();
2900	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);	3166	mg = sv_magicext ((SV *)ncoro->hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)ncoro, 0);
2901	mg->mg_flags |= MGf_DUP;	3167	mg->mg_flags |= MGf_DUP;
…		…
2963	eval = 1	3229	eval = 1
2964	CODE:	3230	CODE:
2965	{	3231	{
2966	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))	3232	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
2967	{	3233	{
2968	struct coro temp;	3234	struct coro *current = SvSTATE_current;
2969		3235
2970	if (!(coro->flags & CF_RUNNING))	3236	if (current != coro)
2971	{	3237	{
2972	PUTBACK;	3238	PUTBACK;
2973	save_perl (aTHX_ &temp);	3239	save_perl (aTHX_ current);
2974	load_perl (aTHX_ coro);	3240	load_perl (aTHX_ coro);
		3241	SPAGAIN;
2975	}	3242	}
2976		3243
2977	{
2978	dSP;
2979	ENTER;
2980	SAVETMPS;
2981	PUTBACK;
2982	PUSHSTACK;	3244	PUSHSTACK;
		3245
2983	PUSHMARK (SP);	3246	PUSHMARK (SP);
		3247	PUTBACK;
2984		3248
2985	if (ix)	3249	if (ix)
2986	eval_sv (coderef, 0);	3250	eval_sv (coderef, 0);
2987	else	3251	else
2988	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	3252	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
2989		3253
2990	POPSTACK;	3254	POPSTACK;
2991	SPAGAIN;	3255	SPAGAIN;
2992	FREETMPS;
2993	LEAVE;
2994	PUTBACK;
2995	}
2996		3256
2997	if (!(coro->flags & CF_RUNNING))	3257	if (current != coro)
2998	{	3258	{
		3259	PUTBACK;
2999	save_perl (aTHX_ coro);	3260	save_perl (aTHX_ coro);
3000	load_perl (aTHX_ &temp);	3261	load_perl (aTHX_ current);
3001	SPAGAIN;	3262	SPAGAIN;
3002	}	3263	}
3003	}	3264	}
3004	}	3265	}
3005		3266
…		…
3009	ALIAS:	3270	ALIAS:
3010	is_ready = CF_READY	3271	is_ready = CF_READY
3011	is_running = CF_RUNNING	3272	is_running = CF_RUNNING
3012	is_new = CF_NEW	3273	is_new = CF_NEW
3013	is_destroyed = CF_DESTROYED	3274	is_destroyed = CF_DESTROYED
		3275	is_suspended = CF_SUSPENDED
3014	CODE:	3276	CODE:
3015	RETVAL = boolSV (coro->flags & ix);	3277	RETVAL = boolSV (coro->flags & ix);
3016	OUTPUT:	3278	OUTPUT:
3017	RETVAL	3279	RETVAL
3018		3280
3019	void	3281	void
3020	throw (Coro::State self, SV *throw = &PL_sv_undef)	3282	throw (Coro::State self, SV *exception = &PL_sv_undef)
3021	PROTOTYPE: $;$	3283	PROTOTYPE: $;$
3022	CODE:	3284	CODE:
3023	{	3285	{
3024	struct coro *current = SvSTATE_current;	3286	struct coro *current = SvSTATE_current;
3025	SV **throwp = self == current ? &CORO_THROW : &self->except;	3287	SV **exceptionp = self == current ? &CORO_THROW : &self->except;
3026	SvREFCNT_dec (*throwp);	3288	SvREFCNT_dec (*exceptionp);
3027	*throwp = SvOK (throw) ? newSVsv (throw) : 0;	3289	SvGETMAGIC (exception);
		3290	*exceptionp = SvOK (exception) ? newSVsv (exception) : 0;
3028	}	3291	}
3029		3292
3030	void	3293	void
3031	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	3294	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
3032	PROTOTYPE: $;$	3295	PROTOTYPE: $;$
…		…
3083	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;	3346	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
3084		3347
3085	SV *tmp = *src; *src = *dst; *dst = tmp;	3348	SV *tmp = *src; *src = *dst; *dst = tmp;
3086	}	3349	}
3087		3350
		3351	void
		3352	cancel (Coro::State self)
		3353	CODE:
		3354	coro_state_destroy (aTHX_ self);
		3355	coro_call_on_destroy (aTHX_ self); /* actually only for Coro objects */
		3356
		3357
		3358	SV *
		3359	enable_times (int enabled = enable_times)
		3360	CODE:
		3361	{
		3362	RETVAL = boolSV (enable_times);
		3363
		3364	if (enabled != enable_times)
		3365	{
		3366	enable_times = enabled;
		3367
		3368	coro_times_update ();
		3369	(enabled ? coro_times_sub : coro_times_add)(SvSTATE (coro_current));
		3370	}
		3371	}
		3372	OUTPUT:
		3373	RETVAL
		3374
		3375	void
		3376	times (Coro::State self)
		3377	PPCODE:
		3378	{
		3379	struct coro *current = SvSTATE (coro_current);
		3380
		3381	if (expect_false (current == self))
		3382	{
		3383	coro_times_update ();
		3384	coro_times_add (SvSTATE (coro_current));
		3385	}
		3386
		3387	EXTEND (SP, 2);
		3388	PUSHs (sv_2mortal (newSVnv (self->t_real [0] + self->t_real [1] * 1e-9)));
		3389	PUSHs (sv_2mortal (newSVnv (self->t_cpu [0] + self->t_cpu [1] * 1e-9)));
		3390
		3391	if (expect_false (current == self))
		3392	coro_times_sub (SvSTATE (coro_current));
		3393	}
		3394
		3395	void
		3396	swap_sv (Coro::State coro, SV *sv, SV *swapsv)
		3397	CODE:
		3398	{
		3399	struct coro *current = SvSTATE_current;
		3400
		3401	if (current == coro)
		3402	SWAP_SVS (current);
		3403
		3404	if (!coro->swap_sv)
		3405	coro->swap_sv = newAV ();
		3406
		3407	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (sv )));
		3408	av_push (coro->swap_sv, SvREFCNT_inc_NN (SvRV (swapsv)));
		3409
		3410	if (current == coro)
		3411	SWAP_SVS (current);
		3412	}
		3413
3088		3414
3089	MODULE = Coro::State PACKAGE = Coro	3415	MODULE = Coro::State PACKAGE = Coro
3090		3416
3091	BOOT:	3417	BOOT:
3092	{	3418	{
3093	int i;
3094
3095	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);	3419	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
3096	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);	3420	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
3097	cv_coro_run = get_cv ( "Coro::_terminate", GV_ADD);	3421	cv_coro_run = get_cv ( "Coro::_coro_run" , GV_ADD);
3098	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);	3422	cv_coro_terminate = get_cv ( "Coro::terminate" , GV_ADD);
3099	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);	3423	coro_current = coro_get_sv (aTHX_ "Coro::current" , FALSE); SvREADONLY_on (coro_current);
3100	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);	3424	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
3101	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);	3425	av_destroy = coro_get_av (aTHX_ "Coro::destroy" , TRUE);
3102	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);	3426	sv_manager = coro_get_sv (aTHX_ "Coro::manager" , TRUE);
		3427	sv_idle = coro_get_sv (aTHX_ "Coro::idle" , TRUE);
3103		3428
3104	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);	3429	sv_async_pool_idle = newSVpv ("[async pool idle]", 0); SvREADONLY_on (sv_async_pool_idle);
3105	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);	3430	sv_Coro = newSVpv ("Coro", 0); SvREADONLY_on (sv_Coro);
3106	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);	3431	cv_pool_handler = get_cv ("Coro::pool_handler", GV_ADD); SvREADONLY_on (cv_pool_handler);
3107	cv_coro_state_new = get_cv ("Coro::State::new", 0); SvREADONLY_on (cv_coro_state_new);	3432	CvNODEBUG_on (get_cv ("Coro::_pool_handler", 0)); /* work around a debugger bug */
3108		3433
3109	coro_stash = gv_stashpv ("Coro", TRUE);	3434	coro_stash = gv_stashpv ("Coro", TRUE);
3110		3435
3111	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	3436	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (CORO_PRIO_MAX));
3112	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	3437	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (CORO_PRIO_HIGH));
3113	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	3438	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (CORO_PRIO_NORMAL));
3114	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	3439	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (CORO_PRIO_LOW));
3115	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (PRIO_IDLE));	3440	newCONSTSUB (coro_stash, "PRIO_IDLE", newSViv (CORO_PRIO_IDLE));
3116	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (PRIO_MIN));	3441	newCONSTSUB (coro_stash, "PRIO_MIN", newSViv (CORO_PRIO_MIN));
3117
3118	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
3119	coro_ready[i] = newAV ();
3120		3442
3121	{	3443	{
3122	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);	3444	SV *sv = coro_get_sv (aTHX_ "Coro::API", TRUE);
3123		3445
3124	coroapi.schedule = api_schedule;	3446	coroapi.schedule = api_schedule;
…		…
3134	sv_setiv (sv, (IV)&coroapi);	3456	sv_setiv (sv, (IV)&coroapi);
3135	SvREADONLY_on (sv);	3457	SvREADONLY_on (sv);
3136	}	3458	}
3137	}	3459	}
3138		3460
		3461	SV *
		3462	async (...)
		3463	PROTOTYPE: &@
		3464	CODE:
		3465	RETVAL = coro_new (aTHX_ coro_stash, &ST (0), items, 1);
		3466	api_ready (aTHX_ RETVAL);
		3467	OUTPUT:
		3468	RETVAL
		3469
3139	void	3470	void
3140	terminate (...)	3471	terminate (...)
3141	CODE:	3472	CODE:
3142	CORO_EXECUTE_SLF_XS (slf_init_terminate);	3473	CORO_EXECUTE_SLF_XS (slf_init_terminate);
3143		3474
…		…
3163		3494
3164	void	3495	void
3165	cede_notself (...)	3496	cede_notself (...)
3166	CODE:	3497	CODE:
3167	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);	3498	CORO_EXECUTE_SLF_XS (slf_init_cede_notself);
3168
3169	void
3170	_cancel (Coro::State self)
3171	CODE:
3172	coro_state_destroy (aTHX_ self);
3173	coro_call_on_destroy (aTHX_ self);
3174		3499
3175	void	3500	void
3176	_set_current (SV *current)	3501	_set_current (SV *current)
3177	PROTOTYPE: $	3502	PROTOTYPE: $
3178	CODE:	3503	CODE:
…		…
3182	void	3507	void
3183	_set_readyhook (SV *hook)	3508	_set_readyhook (SV *hook)
3184	PROTOTYPE: $	3509	PROTOTYPE: $
3185	CODE:	3510	CODE:
3186	SvREFCNT_dec (coro_readyhook);	3511	SvREFCNT_dec (coro_readyhook);
		3512	SvGETMAGIC (hook);
		3513	if (SvOK (hook))
		3514	{
3187	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;	3515	coro_readyhook = newSVsv (hook);
		3516	CORO_READYHOOK = invoke_sv_ready_hook_helper;
		3517	}
		3518	else
		3519	{
		3520	coro_readyhook = 0;
		3521	CORO_READYHOOK = 0;
		3522	}
3188		3523
3189	int	3524	int
3190	prio (Coro::State coro, int newprio = 0)	3525	prio (Coro::State coro, int newprio = 0)
3191	PROTOTYPE: $;$	3526	PROTOTYPE: $;$
3192	ALIAS:	3527	ALIAS:
…		…
3198	if (items > 1)	3533	if (items > 1)
3199	{	3534	{
3200	if (ix)	3535	if (ix)
3201	newprio = coro->prio - newprio;	3536	newprio = coro->prio - newprio;
3202		3537
3203	if (newprio < PRIO_MIN) newprio = PRIO_MIN;	3538	if (newprio < CORO_PRIO_MIN) newprio = CORO_PRIO_MIN;
3204	if (newprio > PRIO_MAX) newprio = PRIO_MAX;	3539	if (newprio > CORO_PRIO_MAX) newprio = CORO_PRIO_MAX;
3205		3540
3206	coro->prio = newprio;	3541	coro->prio = newprio;
3207	}	3542	}
3208	}	3543	}
3209	OUTPUT:	3544	OUTPUT:
…		…
3224	RETVAL = coro_nready;	3559	RETVAL = coro_nready;
3225	OUTPUT:	3560	OUTPUT:
3226	RETVAL	3561	RETVAL
3227		3562
3228	void	3563	void
		3564	suspend (Coro::State self)
		3565	PROTOTYPE: $
		3566	CODE:
		3567	self->flags |= CF_SUSPENDED;
		3568
		3569	void
		3570	resume (Coro::State self)
		3571	PROTOTYPE: $
		3572	CODE:
		3573	self->flags &= ~CF_SUSPENDED;
		3574
		3575	void
3229	_pool_handler (...)	3576	_pool_handler (...)
3230	CODE:	3577	CODE:
3231	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);	3578	CORO_EXECUTE_SLF_XS (slf_init_pool_handler);
3232		3579
3233	void	3580	void
…		…
3244	for (i = 1; i < items; ++i)	3591	for (i = 1; i < items; ++i)
3245	av_push (av, SvREFCNT_inc_NN (ST (i)));	3592	av_push (av, SvREFCNT_inc_NN (ST (i)));
3246		3593
3247	if ((SV *)hv == &PL_sv_undef)	3594	if ((SV *)hv == &PL_sv_undef)
3248	{	3595	{
3249	PUSHMARK (SP);	3596	SV *sv = coro_new (aTHX_ coro_stash, (SV **)&cv_pool_handler, 1, 1);
3250	EXTEND (SP, 2);
3251	PUSHs (sv_Coro);
3252	PUSHs ((SV *)cv_pool_handler);
3253	PUTBACK;
3254	call_sv ((SV *)cv_coro_state_new, G_SCALAR);
3255	SPAGAIN;
3256
3257	hv = (HV *)SvREFCNT_inc_NN (SvRV (POPs));	3597	hv = (HV *)SvREFCNT_inc_NN (SvRV (sv));
		3598	SvREFCNT_dec (sv);
3258	}	3599	}
3259		3600
3260	{	3601	{
3261	struct coro *coro = SvSTATE_hv (hv);	3602	struct coro *coro = SvSTATE_hv (hv);
3262		3603
…		…
3286	rouse_wait (...)	3627	rouse_wait (...)
3287	PROTOTYPE: ;$	3628	PROTOTYPE: ;$
3288	PPCODE:	3629	PPCODE:
3289	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);	3630	CORO_EXECUTE_SLF_XS (slf_init_rouse_wait);
3290		3631
		3632	void
		3633	on_enter (SV *block)
		3634	ALIAS:
		3635	on_leave = 1
		3636	PROTOTYPE: &
		3637	CODE:
		3638	{
		3639	struct coro *coro = SvSTATE_current;
		3640	AV **avp = ix ? &coro->on_leave : &coro->on_enter;
		3641
		3642	block = s_get_cv_croak (block);
		3643
		3644	if (!*avp)
		3645	*avp = newAV ();
		3646
		3647	av_push (*avp, SvREFCNT_inc (block));
		3648
		3649	if (!ix)
		3650	on_enterleave_call (aTHX_ block);
		3651
		3652	LEAVE; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3653	SAVEDESTRUCTOR_X (ix ? coro_pop_on_leave : coro_pop_on_enter, (void *)coro);
		3654	ENTER; /* pp_entersub unfortunately forces an ENTER/LEAVE around XS calls */
		3655	}
		3656
3291		3657
3292	MODULE = Coro::State PACKAGE = PerlIO::cede	3658	MODULE = Coro::State PACKAGE = PerlIO::cede
3293		3659
3294	BOOT:	3660	BOOT:
3295	PerlIO_define_layer (aTHX_ &PerlIO_cede);	3661	PerlIO_define_layer (aTHX_ &PerlIO_cede);
…		…
3298	MODULE = Coro::State PACKAGE = Coro::Semaphore	3664	MODULE = Coro::State PACKAGE = Coro::Semaphore
3299		3665
3300	SV *	3666	SV *
3301	new (SV *klass, SV *count = 0)	3667	new (SV *klass, SV *count = 0)
3302	CODE:	3668	CODE:
		3669	{
		3670	int semcnt = 1;
		3671
		3672	if (count)
		3673	{
		3674	SvGETMAGIC (count);
		3675
		3676	if (SvOK (count))
		3677	semcnt = SvIV (count);
		3678	}
		3679
3303	RETVAL = sv_bless (	3680	RETVAL = sv_bless (
3304	coro_waitarray_new (aTHX_ count && SvOK (count) ? SvIV (count) : 1),	3681	coro_waitarray_new (aTHX_ semcnt),
3305	GvSTASH (CvGV (cv))	3682	GvSTASH (CvGV (cv))
3306	);	3683	);
		3684	}
3307	OUTPUT:	3685	OUTPUT:
3308	RETVAL	3686	RETVAL
3309		3687
3310	# helper for Coro::Channel	3688	# helper for Coro::Channel and others
3311	SV *	3689	SV *
3312	_alloc (int count)	3690	_alloc (int count)
3313	CODE:	3691	CODE:
3314	RETVAL = coro_waitarray_new (aTHX_ count);	3692	RETVAL = coro_waitarray_new (aTHX_ count);
3315	OUTPUT:	3693	OUTPUT:
…		…
3373	for (i = 1; i <= wcount; ++i)	3751	for (i = 1; i <= wcount; ++i)
3374	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));	3752	PUSHs (sv_2mortal (newRV_inc (AvARRAY (av)[i])));
3375	}	3753	}
3376	}	3754	}
3377		3755
		3756	MODULE = Coro::State PACKAGE = Coro::SemaphoreSet
		3757
		3758	void
		3759	_may_delete (SV *sem, int count, int extra_refs)
		3760	PPCODE:
		3761	{
		3762	AV *av = (AV *)SvRV (sem);
		3763
		3764	if (SvREFCNT ((SV *)av) == 1 + extra_refs
		3765	&& AvFILLp (av) == 0 /* no waiters, just count */
		3766	&& SvIV (AvARRAY (av)[0]) == count)
		3767	XSRETURN_YES;
		3768
		3769	XSRETURN_NO;
		3770	}
		3771
3378	MODULE = Coro::State PACKAGE = Coro::Signal	3772	MODULE = Coro::State PACKAGE = Coro::Signal
3379		3773
3380	SV *	3774	SV *
3381	new (SV *klass)	3775	new (SV *klass)
3382	CODE:	3776	CODE:
…		…
3453		3847
3454	void	3848	void
3455	_register (char *target, char *proto, SV *req)	3849	_register (char *target, char *proto, SV *req)
3456	CODE:	3850	CODE:
3457	{	3851	{
3458	CV *req_cv = coro_sv_2cv (aTHX_ req);	3852	SV *req_cv = s_get_cv_croak (req);
3459	/* newXSproto doesn't return the CV on 5.8 */	3853	/* newXSproto doesn't return the CV on 5.8 */
3460	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);	3854	CV *slf_cv = newXS (target, coro_aio_req_xs, __FILE__);
3461	sv_setpv ((SV *)slf_cv, proto);	3855	sv_setpv ((SV *)slf_cv, proto);
3462	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);	3856	sv_magicext ((SV *)slf_cv, (SV *)req_cv, CORO_MAGIC_type_aio, 0, 0, 0);
3463	}	3857	}
3464		3858
		3859	MODULE = Coro::State PACKAGE = Coro::Select
		3860
		3861	void
		3862	patch_pp_sselect ()
		3863	CODE:
		3864	if (!coro_old_pp_sselect)
		3865	{
		3866	coro_select_select = (SV *)get_cv ("Coro::Select::select", 0);
		3867	coro_old_pp_sselect = PL_ppaddr [OP_SSELECT];
		3868	PL_ppaddr [OP_SSELECT] = coro_pp_sselect;
		3869	}
		3870
		3871	void
		3872	unpatch_pp_sselect ()
		3873	CODE:
		3874	if (coro_old_pp_sselect)
		3875	{
		3876	PL_ppaddr [OP_SSELECT] = coro_old_pp_sselect;
		3877	coro_old_pp_sselect = 0;
		3878	}
		3879

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