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/cvs/Coro/Coro/State.xs

Comparing Coro/Coro/State.xs (file contents):
Revision 1.182 by root, Wed Oct 3 18:37:48 2007 UTC vs.
Revision 1.261 by root, Mon Nov 10 05:09:30 2008 UTC

1	#include "libcoro/coro.c"	1	#include "libcoro/coro.c"
2		2
3	#define PERL_NO_GET_CONTEXT	3	#define PERL_NO_GET_CONTEXT
		4	#define PERL_EXT
4		5
5	#include "EXTERN.h"	6	#include "EXTERN.h"
6	#include "perl.h"	7	#include "perl.h"
7	#include "XSUB.h"	8	#include "XSUB.h"
		9	#include "perliol.h"
8		10
9	#include "patchlevel.h"	11	#include "patchlevel.h"
10		12
11	#include <stdio.h>	13	#include <stdio.h>
12	#include <errno.h>	14	#include <errno.h>
13	#include <assert.h>	15	#include <assert.h>
		16
		17	#ifdef WIN32
		18	# undef setjmp
		19	# undef longjmp
		20	# undef _exit
		21	# define setjmp _setjmp // deep magic, don't ask
		22	#else
		23	# include <inttypes.h> /* most portable stdint.h */
		24	#endif
14		25
15	#ifdef HAVE_MMAP	26	#ifdef HAVE_MMAP
16	# include <unistd.h>	27	# include <unistd.h>
17	# include <sys/mman.h>	28	# include <sys/mman.h>
18	# ifndef MAP_ANONYMOUS	29	# ifndef MAP_ANONYMOUS
…		…
41	#else	52	#else
42	# define REGISTER_STACK(cctx,start,end)	53	# define REGISTER_STACK(cctx,start,end)
43	#endif	54	#endif
44		55
45	/* the maximum number of idle cctx that will be pooled */	56	/* the maximum number of idle cctx that will be pooled */
46	#define MAX_IDLE_CCTX 8	57	static int cctx_max_idle = 4;
47		58
48	#define PERL_VERSION_ATLEAST(a,b,c) \	59	#define PERL_VERSION_ATLEAST(a,b,c) \
49	(PERL_REVISION > (a) \	60	(PERL_REVISION > (a) \
50	|| (PERL_REVISION == (a) \	61	|| (PERL_REVISION == (a) \
51	&& (PERL_VERSION > (b) \	62	&& (PERL_VERSION > (b) \
…		…
70	# ifndef IS_PADCONST	81	# ifndef IS_PADCONST
71	# define IS_PADCONST(v) 0	82	# define IS_PADCONST(v) 0
72	# endif	83	# endif
73	#endif	84	#endif
74		85
		86	/* 5.11 */
		87	#ifndef CxHASARGS
		88	# define CxHASARGS(cx) (cx)->blk_sub.hasargs
		89	#endif
		90
		91	/* 5.10.0 */
		92	#ifndef SvREFCNT_inc_NN
		93	# define SvREFCNT_inc_NN(sv) SvREFCNT_inc (sv)
		94	#endif
		95
		96	/* 5.8.8 */
		97	#ifndef GV_NOTQUAL
		98	# define GV_NOTQUAL 0
		99	#endif
		100	#ifndef newSV
		101	# define newSV(l) NEWSV(0,l)
		102	#endif
		103
75	/* 5.8.7 */	104	/* 5.8.7 */
76	#ifndef SvRV_set	105	#ifndef SvRV_set
77	# define SvRV_set(s,v) SvRV(s) = (v)	106	# define SvRV_set(s,v) SvRV(s) = (v)
78	#endif	107	#endif
79		108
…		…
98	#define IN_DESTRUCT (PL_main_cv == Nullcv)	127	#define IN_DESTRUCT (PL_main_cv == Nullcv)
99		128
100	#if __GNUC__ >= 3	129	#if __GNUC__ >= 3
101	# define attribute(x) __attribute__(x)	130	# define attribute(x) __attribute__(x)
102	# define BARRIER __asm__ __volatile__ ("" : : : "memory")	131	# define BARRIER __asm__ __volatile__ ("" : : : "memory")
		132	# define expect(expr,value) __builtin_expect ((expr),(value))
103	#else	133	#else
104	# define attribute(x)	134	# define attribute(x)
105	# define BARRIER	135	# define BARRIER
		136	# define expect(expr,value) (expr)
106	#endif	137	#endif
		138
		139	#define expect_false(expr) expect ((expr) != 0, 0)
		140	#define expect_true(expr) expect ((expr) != 0, 1)
107		141
108	#define NOINLINE attribute ((noinline))	142	#define NOINLINE attribute ((noinline))
109		143
110	#include "CoroAPI.h"	144	#include "CoroAPI.h"
111		145
112	#ifdef USE_ITHREADS	146	#ifdef USE_ITHREADS
		147
113	static perl_mutex coro_mutex;	148	static perl_mutex coro_lock;
114	# define LOCK do { MUTEX_LOCK (&coro_mutex); } while (0)	149	# define LOCK do { MUTEX_LOCK (&coro_lock); } while (0)
115	# define UNLOCK do { MUTEX_UNLOCK (&coro_mutex); } while (0)	150	# define UNLOCK do { MUTEX_UNLOCK (&coro_lock); } while (0)
		151	# if CORO_PTHREAD
		152	static void *coro_thx;
		153	# endif
		154
116	#else	155	#else
		156
117	# define LOCK (void)0	157	# define LOCK (void)0
118	# define UNLOCK (void)0	158	# define UNLOCK (void)0
		159
119	#endif	160	#endif
		161
		162	# undef LOCK
		163	# define LOCK (void)0
		164	# undef UNLOCK
		165	# define UNLOCK (void)0
120		166
121	/* helper storage struct for Coro::AIO */	167	/* helper storage struct for Coro::AIO */
122	struct io_state	168	struct io_state
123	{	169	{
		170	AV *res;
124	int errorno;	171	int errorno;
125	I32 laststype;	172	I32 laststype; /* U16 in 5.10.0 */
126	int laststatval;	173	int laststatval;
127	Stat_t statcache;	174	Stat_t statcache;
128	};	175	};
129		176
		177	static double (*nvtime)(); /* so why doesn't it take void? */
		178
		179	static U32 cctx_gen;
130	static size_t coro_stacksize = CORO_STACKSIZE;	180	static size_t cctx_stacksize = CORO_STACKSIZE;
131	static struct CoroAPI coroapi;	181	static struct CoroAPI coroapi;
132	static AV *main_mainstack; /* used to differentiate between $main and others */	182	static AV *main_mainstack; /* used to differentiate between $main and others */
133	static JMPENV *main_top_env;	183	static JMPENV *main_top_env;
134	static HV *coro_state_stash, *coro_stash;	184	static HV *coro_state_stash, *coro_stash;
135	static SV *coro_mortal; /* will be freed after next transfer */	185	static volatile SV *coro_mortal; /* will be freed/thrown after next transfer */
		186	static volatile struct coro *transfer_next;
136		187
		188	struct transfer_args
		189	{
		190	struct coro *prev, *next;
		191	};
		192
137	static GV *irsgv; /* $/ */	193	static GV *irsgv; /* $/ */
		194	static GV *stdoutgv; /* *STDOUT */
		195	static SV *rv_diehook;
		196	static SV *rv_warnhook;
		197	static HV *hv_sig; /* %SIG */
138		198
139	/* async_pool helper stuff */	199	/* async_pool helper stuff */
140	static SV *sv_pool_rss;	200	static SV *sv_pool_rss;
141	static SV *sv_pool_size;	201	static SV *sv_pool_size;
142	static AV *av_async_pool;	202	static AV *av_async_pool;
		203
		204	/* Coro::AnyEvent */
		205	static SV *sv_activity;
143		206
144	static struct coro_cctx *cctx_first;	207	static struct coro_cctx *cctx_first;
145	static int cctx_count, cctx_idle;	208	static int cctx_count, cctx_idle;
146		209
147	enum {	210	enum {
…		…
165	void *idle_sp; /* sp of top-level transfer/schedule/cede call */	228	void *idle_sp; /* sp of top-level transfer/schedule/cede call */
166	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */	229	JMPENV *idle_te; /* same as idle_sp, but for top_env, TODO: remove once stable */
167	JMPENV *top_env;	230	JMPENV *top_env;
168	coro_context cctx;	231	coro_context cctx;
169		232
		233	U32 gen;
170	#if CORO_USE_VALGRIND	234	#if CORO_USE_VALGRIND
171	int valgrind_id;	235	int valgrind_id;
172	#endif	236	#endif
173	unsigned char flags;	237	unsigned char flags;
174	} coro_cctx;	238	} coro_cctx;
…		…
178	CF_READY = 0x0002, /* coroutine is ready */	242	CF_READY = 0x0002, /* coroutine is ready */
179	CF_NEW = 0x0004, /* has never been switched to */	243	CF_NEW = 0x0004, /* has never been switched to */
180	CF_DESTROYED = 0x0008, /* coroutine data has been freed */	244	CF_DESTROYED = 0x0008, /* coroutine data has been freed */
181	};	245	};
182		246
		247	/* the structure where most of the perl state is stored, overlaid on the cxstack */
		248	typedef struct {
		249	SV *defsv;
		250	AV *defav;
		251	SV *errsv;
		252	SV *irsgv;
		253	#define VAR(name,type) type name;
		254	# include "state.h"
		255	#undef VAR
		256	} perl_slots;
		257
		258	#define SLOT_COUNT ((sizeof (perl_slots) + sizeof (PERL_CONTEXT) - 1) / sizeof (PERL_CONTEXT))
		259
183	/* this is a structure representing a perl-level coroutine */	260	/* this is a structure representing a perl-level coroutine */
184	struct coro {	261	struct coro {
185	/* the c coroutine allocated to this perl coroutine, if any */	262	/* the c coroutine allocated to this perl coroutine, if any */
186	coro_cctx *cctx;	263	coro_cctx *cctx;
187		264
		265	/* process data */
		266	AV *mainstack;
		267	perl_slots *slot; /* basically the saved sp */
		268
188	/* data associated with this coroutine (initial args) */	269	AV *args; /* data associated with this coroutine (initial args) */
189	AV *args;	270	int refcnt; /* coroutines are refcounted, yes */
190	int refcnt;
191	int flags; /* CF_ flags */	271	int flags; /* CF_ flags */
192		272	HV *hv; /* the perl hash associated with this coro, if any */
193	/* optionally saved, might be zero */
194	AV *defav; /* @_ */
195	SV *defsv; /* $_ */
196	SV *errsv; /* $@ */
197	GV *deffh; /* default filehandle */
198	SV *irssv; /* $/ */
199	SV *irssv_sv; /* real $/ cache */
200
201	#define VAR(name,type) type name;
202	# include "state.h"
203	#undef VAR
204		273
205	/* statistics */	274	/* statistics */
206	int usecount; /* number of transfers to this coro */	275	int usecount; /* number of transfers to this coro */
207		276
208	/* coro process data */	277	/* coro process data */
209	int prio;	278	int prio;
210	//SV *throw;	279	SV *throw; /* exception to be thrown */
211		280
212	/* async_pool */	281	/* async_pool */
213	GV *asp_deffh;	282	SV *saved_deffh;
214		283
215	/* linked list */	284	/* linked list */
216	struct coro *next, *prev;	285	struct coro *next, *prev;
217	HV *hv; /* the perl hash associated with this coro, if any */
218	};	286	};
219		287
220	typedef struct coro *Coro__State;	288	typedef struct coro *Coro__State;
221	typedef struct coro *Coro__State_or_hashref;	289	typedef struct coro *Coro__State_or_hashref;
222		290
…		…
229	#define PRIO_IDLE -3	297	#define PRIO_IDLE -3
230	#define PRIO_MIN -4	298	#define PRIO_MIN -4
231		299
232	/* for Coro.pm */	300	/* for Coro.pm */
233	static SV *coro_current;	301	static SV *coro_current;
		302	static SV *coro_readyhook;
234	static AV *coro_ready [PRIO_MAX-PRIO_MIN+1];	303	static AV *coro_ready [PRIO_MAX - PRIO_MIN + 1];
235	static int coro_nready;	304	static int coro_nready;
236	static struct coro *coro_first;	305	static struct coro *coro_first;
237		306
238	/** lowlevel stuff **********************************************************/	307	/** lowlevel stuff **********************************************************/
239		308
		309	static SV *
		310	coro_get_sv (pTHX_ const char *name, int create)
		311	{
		312	#if PERL_VERSION_ATLEAST (5,10,0)
		313	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		314	get_sv (name, create);
		315	#endif
		316	return get_sv (name, create);
		317	}
		318
		319	static AV *
		320	coro_get_av (pTHX_ const char *name, int create)
		321	{
		322	#if PERL_VERSION_ATLEAST (5,10,0)
		323	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		324	get_av (name, create);
		325	#endif
		326	return get_av (name, create);
		327	}
		328
		329	static HV *
		330	coro_get_hv (pTHX_ const char *name, int create)
		331	{
		332	#if PERL_VERSION_ATLEAST (5,10,0)
		333	/* silence stupid and wrong 5.10 warning that I am unable to switch off */
		334	get_hv (name, create);
		335	#endif
		336	return get_hv (name, create);
		337	}
		338
240	static AV *	339	static AV *
241	coro_clone_padlist (pTHX_ CV *cv)	340	coro_clone_padlist (pTHX_ CV *cv)
242	{	341	{
243	AV *padlist = CvPADLIST (cv);	342	AV *padlist = CvPADLIST (cv);
244	AV *newpadlist, *newpad;	343	AV *newpadlist, *newpad;
245		344
246	newpadlist = newAV ();	345	newpadlist = newAV ();
247	AvREAL_off (newpadlist);	346	AvREAL_off (newpadlist);
248	#if PERL_VERSION_ATLEAST (5,9,0)	347	#if PERL_VERSION_ATLEAST (5,10,0)
249	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);	348	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1);
250	#else	349	#else
251	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);	350	Perl_pad_push (aTHX_ padlist, AvFILLp (padlist) + 1, 1);
252	#endif	351	#endif
253	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];	352	newpad = (AV *)AvARRAY (padlist)[AvFILLp (padlist)];
254	--AvFILLp (padlist);	353	--AvFILLp (padlist);
255		354
256	av_store (newpadlist, 0, SvREFCNT_inc (*av_fetch (padlist, 0, FALSE)));	355	av_store (newpadlist, 0, SvREFCNT_inc_NN (*av_fetch (padlist, 0, FALSE)));
257	av_store (newpadlist, 1, (SV *)newpad);	356	av_store (newpadlist, 1, (SV *)newpad);
258		357
259	return newpadlist;	358	return newpadlist;
260	}	359	}
261		360
…		…
291		390
292	/* casting is fun. */	391	/* casting is fun. */
293	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))	392	while (&PL_sv_undef != (SV *)(padlist = (AV *)av_pop (av)))
294	free_padlist (aTHX_ padlist);	393	free_padlist (aTHX_ padlist);
295		394
296	SvREFCNT_dec (av);	395	SvREFCNT_dec (av); /* sv_magicext increased the refcount */
297		396
298	return 0;	397	return 0;
299	}	398	}
300		399
301	#define PERL_MAGIC_coro PERL_MAGIC_ext	400	#define CORO_MAGIC_type_cv PERL_MAGIC_ext
		401	#define CORO_MAGIC_type_state PERL_MAGIC_ext
302		402
303	static MGVTBL vtbl_coro = {0, 0, 0, 0, coro_cv_free};	403	static MGVTBL coro_cv_vtbl = {
		404	0, 0, 0, 0,
		405	coro_cv_free
		406	};
304		407
305	#define CORO_MAGIC(cv) \	408	#define CORO_MAGIC(sv, type) \
306	SvMAGIC (cv) \	409	SvMAGIC (sv) \
307	? SvMAGIC (cv)->mg_type == PERL_MAGIC_coro \	410	? SvMAGIC (sv)->mg_type == type \
308	? SvMAGIC (cv) \	411	? SvMAGIC (sv) \
309	: mg_find ((SV *)cv, PERL_MAGIC_coro) \	412	: mg_find (sv, type) \
310	: 0	413	: 0
		414
		415	#define CORO_MAGIC_cv(cv) CORO_MAGIC (((SV *)(cv)), CORO_MAGIC_type_cv)
		416	#define CORO_MAGIC_state(sv) CORO_MAGIC (((SV *)(sv)), CORO_MAGIC_type_state)
311		417
312	static struct coro *	418	static struct coro *
313	SvSTATE_ (pTHX_ SV *coro)	419	SvSTATE_ (pTHX_ SV *coro)
314	{	420	{
315	HV *stash;	421	HV *stash;
316	MAGIC *mg;	422	MAGIC *mg;
317		423
318	if (SvROK (coro))	424	if (SvROK (coro))
319	coro = SvRV (coro);	425	coro = SvRV (coro);
320		426
321	if (SvTYPE (coro) != SVt_PVHV)	427	if (expect_false (SvTYPE (coro) != SVt_PVHV))
322	croak ("Coro::State object required");	428	croak ("Coro::State object required");
323		429
324	stash = SvSTASH (coro);	430	stash = SvSTASH (coro);
325	if (stash != coro_stash && stash != coro_state_stash)	431	if (expect_false (stash != coro_stash && stash != coro_state_stash))
326	{	432	{
327	/* very slow, but rare, check */	433	/* very slow, but rare, check */
328	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))	434	if (!sv_derived_from (sv_2mortal (newRV_inc (coro)), "Coro::State"))
329	croak ("Coro::State object required");	435	croak ("Coro::State object required");
330	}	436	}
331		437
332	mg = CORO_MAGIC (coro);	438	mg = CORO_MAGIC_state (coro);
333	return (struct coro *)mg->mg_ptr;	439	return (struct coro *)mg->mg_ptr;
334	}	440	}
335		441
336	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))	442	#define SvSTATE(sv) SvSTATE_ (aTHX_ (sv))
337		443
338	/* the next two functions merely cache the padlists */	444	/* the next two functions merely cache the padlists */
339	static void	445	static void
340	get_padlist (pTHX_ CV *cv)	446	get_padlist (pTHX_ CV *cv)
341	{	447	{
342	MAGIC *mg = CORO_MAGIC (cv);	448	MAGIC *mg = CORO_MAGIC_cv (cv);
343	AV *av;	449	AV *av;
344		450
345	if (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0)	451	if (expect_true (mg && AvFILLp ((av = (AV *)mg->mg_obj)) >= 0))
346	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];	452	CvPADLIST (cv) = (AV *)AvARRAY (av)[AvFILLp (av)--];
347	else	453	else
348	{	454	{
349	#if CORO_PREFER_PERL_FUNCTIONS	455	#if CORO_PREFER_PERL_FUNCTIONS
350	/* this is probably cleaner, but also slower? */	456	/* this is probably cleaner? but also slower! */
		457	/* in practise, it seems to be less stable */
351	CV *cp = Perl_cv_clone (cv);	458	CV *cp = Perl_cv_clone (cv);
352	CvPADLIST (cv) = CvPADLIST (cp);	459	CvPADLIST (cv) = CvPADLIST (cp);
353	CvPADLIST (cp) = 0;	460	CvPADLIST (cp) = 0;
354	SvREFCNT_dec (cp);	461	SvREFCNT_dec (cp);
355	#else	462	#else
…		…
359	}	466	}
360		467
361	static void	468	static void
362	put_padlist (pTHX_ CV *cv)	469	put_padlist (pTHX_ CV *cv)
363	{	470	{
364	MAGIC *mg = CORO_MAGIC (cv);	471	MAGIC *mg = CORO_MAGIC_cv (cv);
365	AV *av;	472	AV *av;
366		473
367	if (!mg)	474	if (expect_false (!mg))
368	{	475	mg = sv_magicext ((SV *)cv, (SV *)newAV (), CORO_MAGIC_type_cv, &coro_cv_vtbl, 0, 0);
369	sv_magic ((SV *)cv, 0, PERL_MAGIC_coro, 0, 0);
370	mg = mg_find ((SV *)cv, PERL_MAGIC_coro);
371	mg->mg_virtual = &vtbl_coro;
372	mg->mg_obj = (SV *)newAV ();
373	}
374		476
375	av = (AV *)mg->mg_obj;	477	av = (AV *)mg->mg_obj;
376		478
377	if (AvFILLp (av) >= AvMAX (av))	479	if (expect_false (AvFILLp (av) >= AvMAX (av)))
378	av_extend (av, AvMAX (av) + 1);	480	av_extend (av, AvMAX (av) + 1);
379		481
380	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);	482	AvARRAY (av)[++AvFILLp (av)] = (SV *)CvPADLIST (cv);
381	}	483	}
382		484
383	/** load & save, init *******************************************************/	485	/** load & save, init *******************************************************/
384		486
385	static void	487	static void
386	load_perl (pTHX_ Coro__State c)	488	load_perl (pTHX_ Coro__State c)
387	{	489	{
		490	perl_slots *slot = c->slot;
		491	c->slot = 0;
		492
		493	PL_mainstack = c->mainstack;
		494
		495	GvSV (PL_defgv) = slot->defsv;
		496	GvAV (PL_defgv) = slot->defav;
		497	GvSV (PL_errgv) = slot->errsv;
		498	GvSV (irsgv) = slot->irsgv;
		499
388	#define VAR(name,type) PL_ ## name = c->name;	500	#define VAR(name,type) PL_ ## name = slot->name;
389	# include "state.h"	501	# include "state.h"
390	#undef VAR	502	#undef VAR
391
392	GvSV (PL_defgv) = c->defsv;
393	GvAV (PL_defgv) = c->defav;
394	GvSV (PL_errgv) = c->errsv;
395	PL_defoutgv = c->deffh;
396	PL_rs = c->irssv;
397	GvSV (irsgv) = c->irssv_sv;
398		503
399	{	504	{
400	dSP;	505	dSP;
		506
401	CV *cv;	507	CV *cv;
402		508
403	/* now do the ugly restore mess */	509	/* now do the ugly restore mess */
404	while ((cv = (CV *)POPs))	510	while (expect_true (cv = (CV *)POPs))
405	{	511	{
406	put_padlist (aTHX_ cv); /* mark this padlist as available */	512	put_padlist (aTHX_ cv); /* mark this padlist as available */
407	CvDEPTH (cv) = PTR2IV (POPs);	513	CvDEPTH (cv) = PTR2IV (POPs);
408	CvPADLIST (cv) = (AV *)POPs;	514	CvPADLIST (cv) = (AV *)POPs;
409	}	515	}
…		…
428		534
429	XPUSHs (Nullsv);	535	XPUSHs (Nullsv);
430	/* this loop was inspired by pp_caller */	536	/* this loop was inspired by pp_caller */
431	for (;;)	537	for (;;)
432	{	538	{
433	while (cxix >= 0)	539	while (expect_true (cxix >= 0))
434	{	540	{
435	PERL_CONTEXT *cx = &ccstk[cxix--];	541	PERL_CONTEXT *cx = &ccstk[cxix--];
436		542
437	if (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT)	543	if (expect_true (CxTYPE (cx) == CXt_SUB || CxTYPE (cx) == CXt_FORMAT))
438	{	544	{
439	CV *cv = cx->blk_sub.cv;	545	CV *cv = cx->blk_sub.cv;
440		546
441	if (CvDEPTH (cv))	547	if (expect_true (CvDEPTH (cv)))
442	{	548	{
443	EXTEND (SP, 3);	549	EXTEND (SP, 3);
444	PUSHs ((SV *)CvPADLIST (cv));	550	PUSHs ((SV *)CvPADLIST (cv));
445	PUSHs (INT2PTR (SV *, CvDEPTH (cv)));	551	PUSHs (INT2PTR (SV *, (IV)CvDEPTH (cv)));
446	PUSHs ((SV *)cv);	552	PUSHs ((SV *)cv);
447		553
448	CvDEPTH (cv) = 0;	554	CvDEPTH (cv) = 0;
449	get_padlist (aTHX_ cv);	555	get_padlist (aTHX_ cv);
450	}	556	}
451	}	557	}
452	}	558	}
453		559
454	if (top_si->si_type == PERLSI_MAIN)	560	if (expect_true (top_si->si_type == PERLSI_MAIN))
455	break;	561	break;
456		562
457	top_si = top_si->si_prev;	563	top_si = top_si->si_prev;
458	ccstk = top_si->si_cxstack;	564	ccstk = top_si->si_cxstack;
459	cxix = top_si->si_cxix;	565	cxix = top_si->si_cxix;
460	}	566	}
461		567
462	PUTBACK;	568	PUTBACK;
463	}	569	}
464		570
		571	/* allocate some space on the context stack for our purposes */
		572	/* we manually unroll here, as usually 2 slots is enough */
		573	if (SLOT_COUNT >= 1) CXINC;
		574	if (SLOT_COUNT >= 2) CXINC;
		575	if (SLOT_COUNT >= 3) CXINC;
		576	{
		577	int i;
		578	for (i = 3; i < SLOT_COUNT; ++i)
		579	CXINC;
		580	}
		581	cxstack_ix -= SLOT_COUNT; /* undo allocation */
		582
		583	c->mainstack = PL_mainstack;
		584
		585	{
		586	perl_slots *slot = c->slot = (perl_slots *)(cxstack + cxstack_ix + 1);
		587
465	c->defav = GvAV (PL_defgv);	588	slot->defav = GvAV (PL_defgv);
466	c->defsv = DEFSV;	589	slot->defsv = DEFSV;
467	c->errsv = ERRSV;	590	slot->errsv = ERRSV;
468	c->deffh = PL_defoutgv;
469	c->irssv = PL_rs;
470	c->irssv_sv = GvSV (irsgv);	591	slot->irsgv = GvSV (irsgv);
471		592
472	#define VAR(name,type)c->name = PL_ ## name;	593	#define VAR(name,type) slot->name = PL_ ## name;
473	# include "state.h"	594	# include "state.h"
474	#undef VAR	595	#undef VAR
		596	}
475	}	597	}
476		598
477	/*	599	/*
478	* allocate various perl stacks. This is an exact copy	600	* allocate various perl stacks. This is an exact copy
479	* of perl.c:init_stacks, except that it uses less memory	601	* of perl.c:init_stacks, except that it uses less memory
…		…
484	# define coro_init_stacks init_stacks	606	# define coro_init_stacks init_stacks
485	#else	607	#else
486	static void	608	static void
487	coro_init_stacks (pTHX)	609	coro_init_stacks (pTHX)
488	{	610	{
489	PL_curstackinfo = new_stackinfo(64, 6);	611	PL_curstackinfo = new_stackinfo(32, 8);
490	PL_curstackinfo->si_type = PERLSI_MAIN;	612	PL_curstackinfo->si_type = PERLSI_MAIN;
491	PL_curstack = PL_curstackinfo->si_stack;	613	PL_curstack = PL_curstackinfo->si_stack;
492	PL_mainstack = PL_curstack; /* remember in case we switch stacks */	614	PL_mainstack = PL_curstack; /* remember in case we switch stacks */
493		615
494	PL_stack_base = AvARRAY(PL_curstack);	616	PL_stack_base = AvARRAY(PL_curstack);
495	PL_stack_sp = PL_stack_base;	617	PL_stack_sp = PL_stack_base;
496	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);	618	PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
497		619
498	New(50,PL_tmps_stack,64,SV*);	620	New(50,PL_tmps_stack,32,SV*);
499	PL_tmps_floor = -1;	621	PL_tmps_floor = -1;
500	PL_tmps_ix = -1;	622	PL_tmps_ix = -1;
501	PL_tmps_max = 64;	623	PL_tmps_max = 32;
502		624
503	New(54,PL_markstack,16,I32);	625	New(54,PL_markstack,16,I32);
504	PL_markstack_ptr = PL_markstack;	626	PL_markstack_ptr = PL_markstack;
505	PL_markstack_max = PL_markstack + 16;	627	PL_markstack_max = PL_markstack + 16;
506		628
507	#ifdef SET_MARK_OFFSET	629	#ifdef SET_MARK_OFFSET
508	SET_MARK_OFFSET;	630	SET_MARK_OFFSET;
509	#endif	631	#endif
510		632
511	New(54,PL_scopestack,16,I32);	633	New(54,PL_scopestack,8,I32);
512	PL_scopestack_ix = 0;	634	PL_scopestack_ix = 0;
513	PL_scopestack_max = 16;	635	PL_scopestack_max = 8;
514		636
515	New(54,PL_savestack,64,ANY);	637	New(54,PL_savestack,24,ANY);
516	PL_savestack_ix = 0;	638	PL_savestack_ix = 0;
517	PL_savestack_max = 64;	639	PL_savestack_max = 24;
518		640
519	#if !PERL_VERSION_ATLEAST (5,9,0)	641	#if !PERL_VERSION_ATLEAST (5,10,0)
520	New(54,PL_retstack,4,OP*);	642	New(54,PL_retstack,4,OP*);
521	PL_retstack_ix = 0;	643	PL_retstack_ix = 0;
522	PL_retstack_max = 4;	644	PL_retstack_max = 4;
523	#endif	645	#endif
524	}	646	}
…		…
526		648
527	/*	649	/*
528	* destroy the stacks, the callchain etc...	650	* destroy the stacks, the callchain etc...
529	*/	651	*/
530	static void	652	static void
531	coro_destroy_stacks (pTHX)	653	coro_destruct_stacks (pTHX)
532	{	654	{
533	while (PL_curstackinfo->si_next)	655	while (PL_curstackinfo->si_next)
534	PL_curstackinfo = PL_curstackinfo->si_next;	656	PL_curstackinfo = PL_curstackinfo->si_next;
535		657
536	while (PL_curstackinfo)	658	while (PL_curstackinfo)
…		…
547		669
548	Safefree (PL_tmps_stack);	670	Safefree (PL_tmps_stack);
549	Safefree (PL_markstack);	671	Safefree (PL_markstack);
550	Safefree (PL_scopestack);	672	Safefree (PL_scopestack);
551	Safefree (PL_savestack);	673	Safefree (PL_savestack);
552	#if !PERL_VERSION_ATLEAST (5,9,0)	674	#if !PERL_VERSION_ATLEAST (5,10,0)
553	Safefree (PL_retstack);	675	Safefree (PL_retstack);
554	#endif	676	#endif
555	}	677	}
556		678
557	static size_t	679	static size_t
558	coro_rss (pTHX_ struct coro *coro)	680	coro_rss (pTHX_ struct coro *coro)
559	{	681	{
560	size_t rss = sizeof (coro);	682	size_t rss = sizeof (*coro);
561		683
562	if (coro->mainstack)	684	if (coro->mainstack)
563	{	685	{
		686	perl_slots tmp_slot;
		687	perl_slots *slot;
		688
564	if (coro->flags & CF_RUNNING)	689	if (coro->flags & CF_RUNNING)
565	{	690	{
		691	slot = &tmp_slot;
		692
566	#define VAR(name,type)coro->name = PL_ ## name;	693	#define VAR(name,type) slot->name = PL_ ## name;
567	# include "state.h"	694	# include "state.h"
568	#undef VAR	695	#undef VAR
569	}	696	}
		697	else
		698	slot = coro->slot;
570		699
		700	if (slot)
		701	{
571	rss += sizeof (coro->curstackinfo);	702	rss += sizeof (slot->curstackinfo);
572	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstackinfo->si_stack)) * sizeof (SV *);
573	rss += (coro->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);	703	rss += (slot->curstackinfo->si_cxmax + 1) * sizeof (PERL_CONTEXT);
574	rss += sizeof (struct xpvav) + (1 + AvFILL (coro->curstack)) * sizeof (SV *);	704	rss += sizeof (SV) + sizeof (struct xpvav) + (1 + AvMAX (slot->curstack)) * sizeof (SV *);
575	rss += coro->tmps_max * sizeof (SV *);	705	rss += slot->tmps_max * sizeof (SV *);
576	rss += (coro->markstack_max - coro->markstack_ptr) * sizeof (I32);	706	rss += (slot->markstack_max - slot->markstack_ptr) * sizeof (I32);
577	rss += coro->scopestack_max * sizeof (I32);	707	rss += slot->scopestack_max * sizeof (I32);
578	rss += coro->savestack_max * sizeof (ANY);	708	rss += slot->savestack_max * sizeof (ANY);
579		709
580	#if !PERL_VERSION_ATLEAST (5,9,0)	710	#if !PERL_VERSION_ATLEAST (5,10,0)
581	rss += coro->retstack_max * sizeof (OP *);	711	rss += slot->retstack_max * sizeof (OP *);
582	#endif	712	#endif
		713	}
583	}	714	}
584		715
585	return rss;	716	return rss;
586	}	717	}
587		718
588	/** coroutine stack handling ************************************************/	719	/** coroutine stack handling ************************************************/
		720
		721	static int (*orig_sigelem_get) (pTHX_ SV *sv, MAGIC *mg);
		722	static int (*orig_sigelem_set) (pTHX_ SV *sv, MAGIC *mg);
		723	static int (*orig_sigelem_clr) (pTHX_ SV *sv, MAGIC *mg);
		724
		725	/* apparently < 5.8.8 */
		726	#ifndef MgPV_nolen_const
		727	#define MgPV_nolen_const(mg) (((((int)(mg)->mg_len)) == HEf_SVKEY) ? \
		728	SvPV_nolen((SV*)((mg)->mg_ptr)) : \
		729	(const char*)(mg)->mg_ptr)
		730	#endif
		731
		732	/*
		733	* This overrides the default magic get method of %SIG elements.
		734	* The original one doesn't provide for reading back of PL_diehook/PL_warnhook
		735	* and instead of tryign to save and restore the hash elements, we just provide
		736	* readback here.
		737	* We only do this when the hook is != 0, as they are often set to 0 temporarily,
		738	* not expecting this to actually change the hook. This is a potential problem
		739	* when a schedule happens then, but we ignore this.
		740	*/
		741	static int
		742	coro_sigelem_get (pTHX_ SV *sv, MAGIC *mg)
		743	{
		744	const char *s = MgPV_nolen_const (mg);
		745
		746	if (*s == '_')
		747	{
		748	SV **svp = 0;
		749
		750	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		751	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		752
		753	if (svp)
		754	{
		755	sv_setsv (sv, *svp ? *svp : &PL_sv_undef);
		756	return 0;
		757	}
		758	}
		759
		760	return orig_sigelem_get ? orig_sigelem_get (aTHX_ sv, mg) : 0;
		761	}
		762
		763	static int
		764	coro_sigelem_clr (pTHX_ SV *sv, MAGIC *mg)
		765	{
		766	const char *s = MgPV_nolen_const (mg);
		767
		768	if (*s == '_')
		769	{
		770	SV **svp = 0;
		771
		772	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		773	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		774
		775	if (svp)
		776	{
		777	SV *old = *svp;
		778	*svp = 0;
		779	SvREFCNT_dec (old);
		780	return 0;
		781	}
		782	}
		783
		784	return orig_sigelem_clr ? orig_sigelem_clr (aTHX_ sv, mg) : 0;
		785	}
		786
		787	static int
		788	coro_sigelem_set (pTHX_ SV *sv, MAGIC *mg)
		789	{
		790	const char *s = MgPV_nolen_const (mg);
		791
		792	if (*s == '_')
		793	{
		794	SV **svp = 0;
		795
		796	if (strEQ (s, "__DIE__" )) svp = &PL_diehook;
		797	if (strEQ (s, "__WARN__")) svp = &PL_warnhook;
		798
		799	if (svp)
		800	{
		801	SV *old = *svp;
		802	*svp = newSVsv (sv);
		803	SvREFCNT_dec (old);
		804	return 0;
		805	}
		806	}
		807
		808	return orig_sigelem_set ? orig_sigelem_set (aTHX_ sv, mg) : 0;
		809	}
589		810
590	static void	811	static void
591	coro_setup (pTHX_ struct coro *coro)	812	coro_setup (pTHX_ struct coro *coro)
592	{	813	{
593	/*	814	/*
…		…
598	PL_runops = RUNOPS_DEFAULT;	819	PL_runops = RUNOPS_DEFAULT;
599	PL_curcop = &PL_compiling;	820	PL_curcop = &PL_compiling;
600	PL_in_eval = EVAL_NULL;	821	PL_in_eval = EVAL_NULL;
601	PL_comppad = 0;	822	PL_comppad = 0;
602	PL_curpm = 0;	823	PL_curpm = 0;
		824	PL_curpad = 0;
603	PL_localizing = 0;	825	PL_localizing = 0;
604	PL_dirty = 0;	826	PL_dirty = 0;
605	PL_restartop = 0;	827	PL_restartop = 0;
		828	#if PERL_VERSION_ATLEAST (5,10,0)
		829	PL_parser = 0;
		830	#endif
		831
		832	/* recreate the die/warn hooks */
		833	PL_diehook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__DIE__" , sizeof ("__DIE__" ) - 1, 1), rv_diehook );
		834	PL_warnhook = 0; SvSetMagicSV (*hv_fetch (hv_sig, "__WARN__", sizeof ("__WARN__") - 1, 1), rv_warnhook);
606		835
607	GvSV (PL_defgv) = NEWSV (0, 0);	836	GvSV (PL_defgv) = newSV (0);
608	GvAV (PL_defgv) = coro->args; coro->args = 0;	837	GvAV (PL_defgv) = coro->args; coro->args = 0;
609	GvSV (PL_errgv) = NEWSV (0, 0);	838	GvSV (PL_errgv) = newSV (0);
610	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);	839	GvSV (irsgv) = newSVpvn ("\n", 1); sv_magic (GvSV (irsgv), (SV *)irsgv, PERL_MAGIC_sv, "/", 0);
611	PL_rs = newSVsv (GvSV (irsgv));	840	PL_rs = newSVsv (GvSV (irsgv));
612		841	PL_defoutgv = (GV *)SvREFCNT_inc_NN (stdoutgv);
613	{
614	IO *io = newIO ();
615	PL_defoutgv = newGVgen ("Coro");
616	GvIOp(PL_defoutgv) = io;
617	IoTYPE (io) = IoTYPE_WRONLY;
618	IoOFP (io) = IoIFP (io) = PerlIO_stdout ();
619	IoFLAGS (io) |= IOf_FLUSH;
620	}
621		842
622	{	843	{
623	dSP;	844	dSP;
624	LOGOP myop;	845	UNOP myop;
625		846
626	Zero (&myop, 1, LOGOP);	847	Zero (&myop, 1, UNOP);
627	myop.op_next = Nullop;	848	myop.op_next = Nullop;
628	myop.op_flags = OPf_WANT_VOID;	849	myop.op_flags = OPf_WANT_VOID;
629		850
630	PUSHMARK (SP);	851	PUSHMARK (SP);
631	XPUSHs (av_shift (GvAV (PL_defgv)));	852	XPUSHs (sv_2mortal (av_shift (GvAV (PL_defgv))));
632	PUTBACK;	853	PUTBACK;
633	PL_op = (OP *)&myop;	854	PL_op = (OP *)&myop;
634	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	855	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
635	SPAGAIN;	856	SPAGAIN;
636	}	857	}
637		858
638	ENTER; /* necessary e.g. for dounwind */	859	/* this newly created coroutine might be run on an existing cctx which most
		860	* likely was suspended in set_stacklevel, called from entersub.
		861	* set_stacklevel doesn't do anything on return, but entersub does LEAVE,
		862	* so we ENTER here for symmetry.
		863	*/
		864	ENTER;
639	}	865	}
640		866
641	static void	867	static void
642	coro_destroy (pTHX_ struct coro *coro)	868	coro_destruct (pTHX_ struct coro *coro)
643	{	869	{
644	if (!IN_DESTRUCT)	870	if (!IN_DESTRUCT)
645	{	871	{
646	/* restore all saved variables and stuff */	872	/* restore all saved variables and stuff */
647	LEAVE_SCOPE (0);	873	LEAVE_SCOPE (0);
…		…
663	SvREFCNT_dec (GvSV (PL_errgv));	889	SvREFCNT_dec (GvSV (PL_errgv));
664	SvREFCNT_dec (PL_defoutgv);	890	SvREFCNT_dec (PL_defoutgv);
665	SvREFCNT_dec (PL_rs);	891	SvREFCNT_dec (PL_rs);
666	SvREFCNT_dec (GvSV (irsgv));	892	SvREFCNT_dec (GvSV (irsgv));
667		893
		894	SvREFCNT_dec (PL_diehook);
		895	SvREFCNT_dec (PL_warnhook);
		896
668	SvREFCNT_dec (coro->asp_deffh);	897	SvREFCNT_dec (coro->saved_deffh);
669	//SvREFCNT_dec (coro->throw);	898	SvREFCNT_dec (coro->throw);
670		899
671	coro_destroy_stacks (aTHX);	900	coro_destruct_stacks (aTHX);
672	}	901	}
673		902
674	static void	903	static void
675	free_coro_mortal (pTHX)	904	free_coro_mortal (pTHX)
676	{	905	{
677	if (coro_mortal)	906	if (expect_true (coro_mortal))
678	{	907	{
679	SvREFCNT_dec (coro_mortal);	908	SvREFCNT_dec (coro_mortal);
680	coro_mortal = 0;	909	coro_mortal = 0;
681	}	910	}
682	}	911	}
…		…
711	bot = PL_stack_base + cx->blk_oldsp + 1;	940	bot = PL_stack_base + cx->blk_oldsp + 1;
712	top = cx->blk_gimme == G_ARRAY ? SP + 1	941	top = cx->blk_gimme == G_ARRAY ? SP + 1
713	: cx->blk_gimme == G_SCALAR ? bot + 1	942	: cx->blk_gimme == G_SCALAR ? bot + 1
714	: bot;	943	: bot;
715		944
		945	av_extend (av, top - bot);
716	while (bot < top)	946	while (bot < top)
717	av_push (av, SvREFCNT_inc (*bot++));	947	av_push (av, SvREFCNT_inc_NN (*bot++));
718		948
719	PL_runops = RUNOPS_DEFAULT;	949	PL_runops = RUNOPS_DEFAULT;
720	ENTER;	950	ENTER;
721	SAVETMPS;	951	SAVETMPS;
722	EXTEND (SP, 3);	952	EXTEND (SP, 3);
…		…
760	SAVETMPS;	990	SAVETMPS;
761	EXTEND (SP, 3);	991	EXTEND (SP, 3);
762	PUSHMARK (SP);	992	PUSHMARK (SP);
763	PUSHs (&PL_sv_yes);	993	PUSHs (&PL_sv_yes);
764	PUSHs (fullname);	994	PUSHs (fullname);
765	PUSHs (cx->blk_sub.hasargs ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);	995	PUSHs (CxHASARGS (cx) ? sv_2mortal (newRV_inc ((SV *)cx->blk_sub.argarray)) : &PL_sv_undef);
766	PUTBACK;	996	PUTBACK;
767	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);	997	cb = hv_fetch ((HV *)SvRV (coro_current), "_trace_sub_cb", sizeof ("_trace_sub_cb") - 1, 0);
768	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	998	if (cb) call_sv (*cb, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
769	SPAGAIN;	999	SPAGAIN;
770	FREETMPS;	1000	FREETMPS;
…		…
802		1032
803	TAINT_NOT;	1033	TAINT_NOT;
804	return 0;	1034	return 0;
805	}	1035	}
806		1036
		1037	static void
		1038	prepare_set_stacklevel (struct transfer_args *ta, struct coro_cctx *cctx)
		1039	{
		1040	ta->prev = (struct coro *)cctx;
		1041	ta->next = 0;
		1042	}
		1043
807	/* inject a fake call to Coro::State::_cctx_init into the execution */	1044	/* inject a fake call to Coro::State::_cctx_init into the execution */
808	/* _cctx_init should be careful, as it could be called at almost any time */	1045	/* _cctx_init should be careful, as it could be called at almost any time */
809	/* during execution of a perl program */	1046	/* during execution of a perl program */
		1047	/* also initialises PL_top_env */
810	static void NOINLINE	1048	static void NOINLINE
811	prepare_cctx (pTHX_ coro_cctx *cctx)	1049	cctx_prepare (pTHX_ coro_cctx *cctx)
812	{	1050	{
813	dSP;	1051	dSP;
814	LOGOP myop;	1052	UNOP myop;
815		1053
816	PL_top_env = &PL_start_env;	1054	PL_top_env = &PL_start_env;
817		1055
818	if (cctx->flags & CC_TRACE)	1056	if (cctx->flags & CC_TRACE)
819	PL_runops = runops_trace;	1057	PL_runops = runops_trace;
820		1058
821	Zero (&myop, 1, LOGOP);	1059	Zero (&myop, 1, UNOP);
822	myop.op_next = PL_op;	1060	myop.op_next = PL_op;
823	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;	1061	myop.op_flags = OPf_WANT_VOID | OPf_STACKED;
824		1062
825	PUSHMARK (SP);	1063	PUSHMARK (SP);
826	EXTEND (SP, 2);	1064	EXTEND (SP, 2);
827	PUSHs (sv_2mortal (newSViv (PTR2IV (cctx))));	1065	PUSHs (sv_2mortal (newSViv ((IV)cctx)));
828	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));	1066	PUSHs ((SV *)get_cv ("Coro::State::_cctx_init", FALSE));
829	PUTBACK;	1067	PUTBACK;
830	PL_op = (OP *)&myop;	1068	PL_op = (OP *)&myop;
831	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);	1069	PL_op = PL_ppaddr[OP_ENTERSUB](aTHX);
832	SPAGAIN;	1070	SPAGAIN;
833	}	1071	}
834		1072
		1073	/* the tail of transfer: execute stuff we can onyl do afetr a transfer */
		1074	static void
		1075	transfer_tail (void)
		1076	{
		1077	struct coro *next = (struct coro *)transfer_next;
		1078	transfer_next = 0; //D for temporary assertion in transfer
		1079	assert (("FATAL ERROR: internal error 1067 in Coro module, please report", next));//D
		1080
		1081	free_coro_mortal (aTHX);
		1082	UNLOCK;
		1083
		1084	if (expect_false (next->throw))
		1085	{
		1086	SV *exception = sv_2mortal (next->throw);
		1087
		1088	next->throw = 0;
		1089	sv_setsv (ERRSV, exception);
		1090	croak (0);
		1091	}
		1092	}
		1093
835	/*	1094	/*
836	* this is a _very_ stripped down perl interpreter ;)	1095	* this is a _very_ stripped down perl interpreter ;)
837	*/	1096	*/
838	static void	1097	static void
839	coro_run (void *arg)	1098	cctx_run (void *arg)
840	{	1099	{
		1100	#ifdef USE_ITHREADS
		1101	# if CORO_PTHREAD
		1102	PERL_SET_CONTEXT (coro_thx);
		1103	# endif
		1104	#endif
		1105	{
841	dTHX;	1106	dTHX;
842		1107
843	/* coro_run is the alternative tail of transfer(), so unlock here. */	1108	/* entersub called ENTER, but we never 'returned', undo that here */
844	UNLOCK;	1109	LEAVE;
845		1110
846	/* we now skip the entersub that lead to transfer() */	1111	/* we now skip the entersub that did lead to transfer() */
847	PL_op = PL_op->op_next;	1112	PL_op = PL_op->op_next;
848		1113
849	/* inject a fake subroutine call to cctx_init */	1114	/* inject a fake subroutine call to cctx_init */
850	prepare_cctx (aTHX_ (coro_cctx *)arg);	1115	cctx_prepare (aTHX_ (coro_cctx *)arg);
851		1116
		1117	/* cctx_run is the alternative tail of transfer() */
		1118	transfer_tail ();
		1119
852	/* somebody or something will hit me for both perl_run and PL_restartop */	1120	/* somebody or something will hit me for both perl_run and PL_restartop */
853	PL_restartop = PL_op;	1121	PL_restartop = PL_op;
854	perl_run (PL_curinterp);	1122	perl_run (PL_curinterp);
855		1123
856	/*	1124	/*
857	* If perl-run returns we assume exit() was being called or the coro	1125	* If perl-run returns we assume exit() was being called or the coro
858	* fell off the end, which seems to be the only valid (non-bug)	1126	* fell off the end, which seems to be the only valid (non-bug)
859	* reason for perl_run to return. We try to exit by jumping to the	1127	* reason for perl_run to return. We try to exit by jumping to the
860	* bootstrap-time "top" top_env, as we cannot restore the "main"	1128	* bootstrap-time "top" top_env, as we cannot restore the "main"
861	* coroutine as Coro has no such concept	1129	* coroutine as Coro has no such concept
862	*/	1130	*/
863	PL_top_env = main_top_env;	1131	PL_top_env = main_top_env;
864	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */	1132	JMPENV_JUMP (2); /* I do not feel well about the hardcoded 2 at all */
		1133	}
865	}	1134	}
866		1135
867	static coro_cctx *	1136	static coro_cctx *
868	cctx_new ()	1137	cctx_new ()
869	{	1138	{
870	coro_cctx *cctx;	1139	coro_cctx *cctx;
		1140
		1141	++cctx_count;
		1142	New (0, cctx, 1, coro_cctx);
		1143
		1144	cctx->gen = cctx_gen;
		1145	cctx->flags = 0;
		1146	cctx->idle_sp = 0; /* can be accessed by transfer between cctx_run and set_stacklevel, on throw */
		1147
		1148	return cctx;
		1149	}
		1150
		1151	/* create a new cctx only suitable as source */
		1152	static coro_cctx *
		1153	cctx_new_empty ()
		1154	{
		1155	coro_cctx *cctx = cctx_new ();
		1156
		1157	cctx->sptr = 0;
		1158	coro_create (&cctx->cctx, 0, 0, 0, 0);
		1159
		1160	return cctx;
		1161	}
		1162
		1163	/* create a new cctx suitable as destination/running a perl interpreter */
		1164	static coro_cctx *
		1165	cctx_new_run ()
		1166	{
		1167	coro_cctx *cctx = cctx_new ();
871	void *stack_start;	1168	void *stack_start;
872	size_t stack_size;	1169	size_t stack_size;
873		1170
874	++cctx_count;
875
876	Newz (0, cctx, 1, coro_cctx);
877
878	#if HAVE_MMAP	1171	#if HAVE_MMAP
879
880	cctx->ssize = ((coro_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;	1172	cctx->ssize = ((cctx_stacksize * sizeof (long) + PAGESIZE - 1) / PAGESIZE + CORO_STACKGUARD) * PAGESIZE;
881	/* mmap supposedly does allocate-on-write for us */	1173	/* mmap supposedly does allocate-on-write for us */
882	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);	1174	cctx->sptr = mmap (0, cctx->ssize, PROT_EXEC|PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, 0, 0);
883		1175
884	if (cctx->sptr != (void *)-1)	1176	if (cctx->sptr != (void *)-1)
885	{	1177	{
…		…
891	cctx->flags |= CC_MAPPED;	1183	cctx->flags |= CC_MAPPED;
892	}	1184	}
893	else	1185	else
894	#endif	1186	#endif
895	{	1187	{
896	cctx->ssize = coro_stacksize * (long)sizeof (long);	1188	cctx->ssize = cctx_stacksize * (long)sizeof (long);
897	New (0, cctx->sptr, coro_stacksize, long);	1189	New (0, cctx->sptr, cctx_stacksize, long);
898		1190
899	if (!cctx->sptr)	1191	if (!cctx->sptr)
900	{	1192	{
901	perror ("FATAL: unable to allocate stack for coroutine");	1193	perror ("FATAL: unable to allocate stack for coroutine");
902	_exit (EXIT_FAILURE);	1194	_exit (EXIT_FAILURE);
…		…
905	stack_start = cctx->sptr;	1197	stack_start = cctx->sptr;
906	stack_size = cctx->ssize;	1198	stack_size = cctx->ssize;
907	}	1199	}
908		1200
909	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);	1201	REGISTER_STACK (cctx, (char *)stack_start, (char *)stack_start + stack_size);
910	coro_create (&cctx->cctx, coro_run, (void *)cctx, stack_start, stack_size);	1202	coro_create (&cctx->cctx, cctx_run, (void *)cctx, stack_start, stack_size);
911		1203
912	return cctx;	1204	return cctx;
913	}	1205	}
914		1206
915	static void	1207	static void
…		…
917	{	1209	{
918	if (!cctx)	1210	if (!cctx)
919	return;	1211	return;
920		1212
921	--cctx_count;	1213	--cctx_count;
		1214	coro_destroy (&cctx->cctx);
922		1215
		1216	/* coro_transfer creates new, empty cctx's */
		1217	if (cctx->sptr)
		1218	{
923	#if CORO_USE_VALGRIND	1219	#if CORO_USE_VALGRIND
924	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);	1220	VALGRIND_STACK_DEREGISTER (cctx->valgrind_id);
925	#endif	1221	#endif
926		1222
927	#if HAVE_MMAP	1223	#if HAVE_MMAP
928	if (cctx->flags & CC_MAPPED)	1224	if (cctx->flags & CC_MAPPED)
929	munmap (cctx->sptr, cctx->ssize);	1225	munmap (cctx->sptr, cctx->ssize);
930	else	1226	else
931	#endif	1227	#endif
932	Safefree (cctx->sptr);	1228	Safefree (cctx->sptr);
		1229	}
933		1230
934	Safefree (cctx);	1231	Safefree (cctx);
935	}	1232	}
		1233
		1234	/* wether this cctx should be destructed */
		1235	#define CCTX_EXPIRED(cctx) ((cctx)->gen != cctx_gen || ((cctx)->flags & CC_NOREUSE))
936		1236
937	static coro_cctx *	1237	static coro_cctx *
938	cctx_get (pTHX)	1238	cctx_get (pTHX)
939	{	1239	{
940	while (cctx_first)	1240	while (expect_true (cctx_first))
941	{	1241	{
942	coro_cctx *cctx = cctx_first;	1242	coro_cctx *cctx = cctx_first;
943	cctx_first = cctx->next;	1243	cctx_first = cctx->next;
944	--cctx_idle;	1244	--cctx_idle;
945		1245
946	if (cctx->ssize >= coro_stacksize && !(cctx->flags & CC_NOREUSE))	1246	if (expect_true (!CCTX_EXPIRED (cctx)))
947	return cctx;	1247	return cctx;
948		1248
949	cctx_destroy (cctx);	1249	cctx_destroy (cctx);
950	}	1250	}
951		1251
952	return cctx_new ();	1252	return cctx_new_run ();
953	}	1253	}
954		1254
955	static void	1255	static void
956	cctx_put (coro_cctx *cctx)	1256	cctx_put (coro_cctx *cctx)
957	{	1257	{
		1258	assert (("cctx_put called on non-initialised cctx", cctx->sptr));
		1259
958	/* free another cctx if overlimit */	1260	/* free another cctx if overlimit */
959	if (cctx_idle >= MAX_IDLE_CCTX)	1261	if (expect_false (cctx_idle >= cctx_max_idle))
960	{	1262	{
961	coro_cctx *first = cctx_first;	1263	coro_cctx *first = cctx_first;
962	cctx_first = first->next;	1264	cctx_first = first->next;
963	--cctx_idle;	1265	--cctx_idle;
964		1266
…		…
970	cctx_first = cctx;	1272	cctx_first = cctx;
971	}	1273	}
972		1274
973	/** coroutine switching *****************************************************/	1275	/** coroutine switching *****************************************************/
974		1276
975	static void NOINLINE	1277	static void
976	transfer_check (pTHX_ struct coro *prev, struct coro *next)	1278	transfer_check (pTHX_ struct coro *prev, struct coro *next)
977	{	1279	{
978	if (prev != next)	1280	if (expect_true (prev != next))
979	{	1281	{
980	if (!(prev->flags & (CF_RUNNING | CF_NEW)))	1282	if (expect_false (!(prev->flags & (CF_RUNNING | CF_NEW))))
981	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");	1283	croak ("Coro::State::transfer called with non-running/new prev Coro::State, but can only transfer from running or new states");
982		1284
983	if (next->flags & CF_RUNNING)	1285	if (expect_false (next->flags & CF_RUNNING))
984	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");	1286	croak ("Coro::State::transfer called with running next Coro::State, but can only transfer to inactive states");
985		1287
986	if (next->flags & CF_DESTROYED)	1288	if (expect_false (next->flags & CF_DESTROYED))
987	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");	1289	croak ("Coro::State::transfer called with destroyed next Coro::State, but can only transfer to inactive states");
988		1290
		1291	#if !PERL_VERSION_ATLEAST (5,10,0)
989	if (PL_lex_state != LEX_NOTPARSING)	1292	if (expect_false (PL_lex_state != LEX_NOTPARSING))
990	croak ("Coro::State::transfer called while parsing, but this is not supported");	1293	croak ("Coro::State::transfer called while parsing, but this is not supported in your perl version");
		1294	#endif
991	}	1295	}
992	}	1296	}
993		1297
994	/* always use the TRANSFER macro */	1298	/* always use the TRANSFER macro */
995	static void NOINLINE	1299	static void NOINLINE
996	transfer (pTHX_ struct coro *prev, struct coro *next)	1300	transfer (pTHX_ struct coro *prev, struct coro *next, int force_cctx)
997	{	1301	{
998	dSTACKLEVEL;	1302	dSTACKLEVEL;
999		1303
1000	/* sometimes transfer is only called to set idle_sp */	1304	/* sometimes transfer is only called to set idle_sp */
1001	if (!next)	1305	if (expect_false (!next))
1002	{	1306	{
1003	((coro_cctx *)prev)->idle_sp = STACKLEVEL;	1307	((coro_cctx *)prev)->idle_sp = STACKLEVEL;
1004	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */	1308	assert (((coro_cctx *)prev)->idle_te = PL_top_env); /* just for the side-effect when asserts are enabled */
1005	}	1309	}
1006	else if (prev != next)	1310	else if (expect_true (prev != next))
1007	{	1311	{
1008	coro_cctx *prev__cctx;	1312	coro_cctx *prev__cctx;
1009		1313
1010	if (prev->flags & CF_NEW)	1314	if (expect_false (prev->flags & CF_NEW))
1011	{	1315	{
1012	/* create a new empty context */	1316	/* create a new empty/source context */
1013	Newz (0, prev->cctx, 1, coro_cctx);	1317	prev->cctx = cctx_new_empty ();
1014	prev->flags &= ~CF_NEW;	1318	prev->flags &= ~CF_NEW;
1015	prev->flags |= CF_RUNNING;	1319	prev->flags |= CF_RUNNING;
1016	}	1320	}
1017		1321
1018	prev->flags &= ~CF_RUNNING;	1322	prev->flags &= ~CF_RUNNING;
1019	next->flags |= CF_RUNNING;	1323	next->flags |= CF_RUNNING;
1020		1324
1021	LOCK;	1325	LOCK;
1022		1326
		1327	/* first get rid of the old state */
		1328	save_perl (aTHX_ prev);
		1329
1023	if (next->flags & CF_NEW)	1330	if (expect_false (next->flags & CF_NEW))
1024	{	1331	{
1025	/* need to start coroutine */	1332	/* need to start coroutine */
1026	next->flags &= ~CF_NEW;	1333	next->flags &= ~CF_NEW;
1027	/* first get rid of the old state */
1028	save_perl (aTHX_ prev);
1029	/* setup coroutine call */	1334	/* setup coroutine call */
1030	coro_setup (aTHX_ next);	1335	coro_setup (aTHX_ next);
1031	}	1336	}
1032	else	1337	else
1033	{
1034	/* coroutine already started */
1035	save_perl (aTHX_ prev);
1036	load_perl (aTHX_ next);	1338	load_perl (aTHX_ next);
1037	}
1038		1339
1039	prev__cctx = prev->cctx;	1340	prev__cctx = prev->cctx;
1040		1341
1041	/* possibly "free" the cctx */	1342	/* possibly untie and reuse the cctx */
1042	if (prev__cctx->idle_sp == STACKLEVEL && !(prev__cctx->flags & CC_TRACE))	1343	if (expect_true (
		1344	prev__cctx->idle_sp == STACKLEVEL
		1345	&& !(prev__cctx->flags & CC_TRACE)
		1346	&& !force_cctx
		1347	))
1043	{	1348	{
1044	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */	1349	/* I assume that STACKLEVEL is a stronger indicator than PL_top_env changes */
1045	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));	1350	assert (("ERROR: current top_env must equal previous top_env", PL_top_env == prev__cctx->idle_te));
1046		1351
1047	prev->cctx = 0;	1352	prev->cctx = 0;
1048		1353
		1354	/* if the cctx is about to be destroyed we need to make sure we won't see it in cctx_get */
		1355	/* without this the next cctx_get might destroy the prev__cctx while still in use */
		1356	if (expect_false (CCTX_EXPIRED (prev__cctx)))
		1357	if (!next->cctx)
		1358	next->cctx = cctx_get (aTHX);
		1359
1049	cctx_put (prev__cctx);	1360	cctx_put (prev__cctx);
1050	}	1361	}
1051		1362
1052	++next->usecount;	1363	++next->usecount;
1053		1364
1054	if (!next->cctx)	1365	if (expect_true (!next->cctx))
1055	next->cctx = cctx_get (aTHX);	1366	next->cctx = cctx_get (aTHX);
1056		1367
		1368	assert (("FATAL ERROR: internal error 1352 in Coro, please report", !transfer_next));//D
		1369	transfer_next = next;
		1370
1057	if (prev__cctx != next->cctx)	1371	if (expect_false (prev__cctx != next->cctx))
1058	{	1372	{
1059	prev__cctx->top_env = PL_top_env;	1373	prev__cctx->top_env = PL_top_env;
1060	PL_top_env = next->cctx->top_env;	1374	PL_top_env = next->cctx->top_env;
1061	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);	1375	coro_transfer (&prev__cctx->cctx, &next->cctx->cctx);
1062	}	1376	}
1063		1377
1064	free_coro_mortal (aTHX);	1378	transfer_tail ();
1065	UNLOCK;
1066	}	1379	}
1067	}	1380	}
1068		1381
1069	struct transfer_args
1070	{
1071	struct coro *prev, *next;
1072	};
1073
1074	#define TRANSFER(ta) transfer (aTHX_ (ta).prev, (ta).next)	1382	#define TRANSFER(ta, force_cctx) transfer (aTHX_ (ta).prev, (ta).next, (force_cctx))
1075	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)	1383	#define TRANSFER_CHECK(ta) transfer_check (aTHX_ (ta).prev, (ta).next)
1076		1384
1077	/** high level stuff ********************************************************/	1385	/** high level stuff ********************************************************/
1078		1386
1079	static int	1387	static int
…		…
1103	croak ("FATAL: tried to destroy currently running coroutine");	1411	croak ("FATAL: tried to destroy currently running coroutine");
1104		1412
1105	save_perl (aTHX_ &temp);	1413	save_perl (aTHX_ &temp);
1106	load_perl (aTHX_ coro);	1414	load_perl (aTHX_ coro);
1107		1415
1108	coro_destroy (aTHX_ coro);	1416	coro_destruct (aTHX_ coro);
1109		1417
1110	load_perl (aTHX_ &temp); /* this will get rid of defsv etc.. */	1418	load_perl (aTHX_ &temp);
1111		1419
1112	coro->mainstack = 0;	1420	coro->slot = 0;
1113	}	1421	}
1114		1422
1115	cctx_destroy (coro->cctx);	1423	cctx_destroy (coro->cctx);
1116	SvREFCNT_dec (coro->args);	1424	SvREFCNT_dec (coro->args);
1117		1425
…		…
1173	{	1481	{
1174	dTHX;	1482	dTHX;
1175	struct transfer_args ta;	1483	struct transfer_args ta;
1176		1484
1177	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);	1485	prepare_transfer (aTHX_ &ta, prev_sv, next_sv);
1178	TRANSFER (ta);	1486	TRANSFER (ta, 1);
1179	}	1487	}
1180		1488
1181	/** Coro ********************************************************************/	1489	/** Coro ********************************************************************/
1182		1490
1183	static void	1491	static void
…		…
1185	{	1493	{
1186	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);	1494	av_push (coro_ready [SvSTATE (coro_sv)->prio - PRIO_MIN], coro_sv);
1187	}	1495	}
1188		1496
1189	static SV *	1497	static SV *
1190	coro_deq (pTHX_ int min_prio)	1498	coro_deq (pTHX)
1191	{	1499	{
1192	int prio = PRIO_MAX - PRIO_MIN;	1500	int prio;
1193		1501
1194	min_prio -= PRIO_MIN;
1195	if (min_prio < 0)
1196	min_prio = 0;
1197
1198	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= min_prio; )	1502	for (prio = PRIO_MAX - PRIO_MIN + 1; --prio >= 0; )
1199	if (AvFILLp (coro_ready [prio]) >= 0)	1503	if (AvFILLp (coro_ready [prio]) >= 0)
1200	return av_shift (coro_ready [prio]);	1504	return av_shift (coro_ready [prio]);
1201		1505
1202	return 0;	1506	return 0;
1203	}	1507	}
…		…
1205	static int	1509	static int
1206	api_ready (SV *coro_sv)	1510	api_ready (SV *coro_sv)
1207	{	1511	{
1208	dTHX;	1512	dTHX;
1209	struct coro *coro;	1513	struct coro *coro;
		1514	SV *sv_hook;
		1515	void (*xs_hook)(void);
1210		1516
1211	if (SvROK (coro_sv))	1517	if (SvROK (coro_sv))
1212	coro_sv = SvRV (coro_sv);	1518	coro_sv = SvRV (coro_sv);
1213		1519
1214	coro = SvSTATE (coro_sv);	1520	coro = SvSTATE (coro_sv);
…		…
1217	return 0;	1523	return 0;
1218		1524
1219	coro->flags |= CF_READY;	1525	coro->flags |= CF_READY;
1220		1526
1221	LOCK;	1527	LOCK;
		1528
		1529	sv_hook = coro_nready ? 0 : coro_readyhook;
		1530	xs_hook = coro_nready ? 0 : coroapi.readyhook;
		1531
1222	coro_enq (aTHX_ SvREFCNT_inc (coro_sv));	1532	coro_enq (aTHX_ SvREFCNT_inc_NN (coro_sv));
1223	++coro_nready;	1533	++coro_nready;
		1534
1224	UNLOCK;	1535	UNLOCK;
		1536
		1537	if (sv_hook)
		1538	{
		1539	dSP;
		1540
		1541	ENTER;
		1542	SAVETMPS;
		1543
		1544	PUSHMARK (SP);
		1545	PUTBACK;
		1546	call_sv (sv_hook, G_DISCARD);
		1547	SPAGAIN;
		1548
		1549	FREETMPS;
		1550	LEAVE;
		1551	}
		1552
		1553	if (xs_hook)
		1554	xs_hook ();
1225		1555
1226	return 1;	1556	return 1;
1227	}	1557	}
1228		1558
1229	static int	1559	static int
…		…
1239	SV *prev_sv, *next_sv;	1569	SV *prev_sv, *next_sv;
1240		1570
1241	for (;;)	1571	for (;;)
1242	{	1572	{
1243	LOCK;	1573	LOCK;
1244	next_sv = coro_deq (aTHX_ PRIO_MIN);	1574	next_sv = coro_deq (aTHX);
1245		1575
1246	/* nothing to schedule: call the idle handler */	1576	/* nothing to schedule: call the idle handler */
1247	if (!next_sv)	1577	if (expect_false (!next_sv))
1248	{	1578	{
1249	dSP;	1579	dSP;
1250	UNLOCK;	1580	UNLOCK;
1251		1581
1252	ENTER;	1582	ENTER;
1253	SAVETMPS;	1583	SAVETMPS;
1254		1584
1255	PUSHMARK (SP);	1585	PUSHMARK (SP);
1256	PUTBACK;	1586	PUTBACK;
1257	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);	1587	call_sv (get_sv ("Coro::idle", FALSE), G_DISCARD);
		1588	SPAGAIN;
1258		1589
1259	FREETMPS;	1590	FREETMPS;
1260	LEAVE;	1591	LEAVE;
1261	continue;	1592	continue;
1262	}	1593	}
1263		1594
1264	ta->next = SvSTATE (next_sv);	1595	ta->next = SvSTATE (next_sv);
1265		1596
1266	/* cannot transfer to destroyed coros, skip and look for next */	1597	/* cannot transfer to destroyed coros, skip and look for next */
1267	if (ta->next->flags & CF_DESTROYED)	1598	if (expect_false (ta->next->flags & CF_DESTROYED))
1268	{	1599	{
1269	UNLOCK;	1600	UNLOCK;
1270	SvREFCNT_dec (next_sv);	1601	SvREFCNT_dec (next_sv);
1271	/* coro_nready is already taken care of by destroy */	1602	/* coro_nready has already been taken care of by destroy */
1272	continue;	1603	continue;
1273	}	1604	}
1274		1605
1275	--coro_nready;	1606	--coro_nready;
1276	UNLOCK;	1607	UNLOCK;
…		…
1317	{	1648	{
1318	dTHX;	1649	dTHX;
1319	struct transfer_args ta;	1650	struct transfer_args ta;
1320		1651
1321	prepare_schedule (aTHX_ &ta);	1652	prepare_schedule (aTHX_ &ta);
1322	TRANSFER (ta);	1653	TRANSFER (ta, 1);
1323	}	1654	}
1324		1655
1325	static int	1656	static int
1326	api_cede (void)	1657	api_cede (void)
1327	{	1658	{
1328	dTHX;	1659	dTHX;
1329	struct transfer_args ta;	1660	struct transfer_args ta;
1330		1661
1331	prepare_cede (aTHX_ &ta);	1662	prepare_cede (aTHX_ &ta);
1332		1663
1333	if (ta.prev != ta.next)	1664	if (expect_true (ta.prev != ta.next))
1334	{	1665	{
1335	TRANSFER (ta);	1666	TRANSFER (ta, 1);
1336	return 1;	1667	return 1;
1337	}	1668	}
1338	else	1669	else
1339	return 0;	1670	return 0;
1340	}	1671	}
…		…
1345	dTHX;	1676	dTHX;
1346	struct transfer_args ta;	1677	struct transfer_args ta;
1347		1678
1348	if (prepare_cede_notself (aTHX_ &ta))	1679	if (prepare_cede_notself (aTHX_ &ta))
1349	{	1680	{
1350	TRANSFER (ta);	1681	TRANSFER (ta, 1);
1351	return 1;	1682	return 1;
1352	}	1683	}
1353	else	1684	else
1354	return 0;	1685	return 0;
1355	}	1686	}
…		…
1361	struct coro *coro = SvSTATE (coro_sv);	1692	struct coro *coro = SvSTATE (coro_sv);
1362		1693
1363	if (flags & CC_TRACE)	1694	if (flags & CC_TRACE)
1364	{	1695	{
1365	if (!coro->cctx)	1696	if (!coro->cctx)
1366	coro->cctx = cctx_new ();	1697	coro->cctx = cctx_new_run ();
1367	else if (!(coro->cctx->flags & CC_TRACE))	1698	else if (!(coro->cctx->flags & CC_TRACE))
1368	croak ("cannot enable tracing on coroutine with custom stack");	1699	croak ("cannot enable tracing on coroutine with custom stack");
1369		1700
1370	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));	1701	coro->cctx->flags |= CC_NOREUSE | (flags & (CC_TRACE | CC_TRACE_ALL));
1371	}	1702	}
…		…
1374	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);	1705	coro->cctx->flags &= ~(CC_TRACE | CC_TRACE_ALL);
1375		1706
1376	if (coro->flags & CF_RUNNING)	1707	if (coro->flags & CF_RUNNING)
1377	PL_runops = RUNOPS_DEFAULT;	1708	PL_runops = RUNOPS_DEFAULT;
1378	else	1709	else
1379	coro->runops = RUNOPS_DEFAULT;	1710	coro->slot->runops = RUNOPS_DEFAULT;
		1711	}
		1712	}
		1713
		1714	#if 0
		1715	static int
		1716	coro_gensub_free (pTHX_ SV *sv, MAGIC *mg)
		1717	{
		1718	AV *padlist;
		1719	AV *av = (AV *)mg->mg_obj;
		1720
		1721	abort ();
		1722
		1723	return 0;
		1724	}
		1725
		1726	static MGVTBL coro_gensub_vtbl = {
		1727	0, 0, 0, 0,
		1728	coro_gensub_free
		1729	};
		1730	#endif
		1731
		1732	/*****************************************************************************/
		1733	/* PerlIO::cede */
		1734
		1735	typedef struct
		1736	{
		1737	PerlIOBuf base;
		1738	NV next, every;
		1739	} PerlIOCede;
		1740
		1741	static IV
		1742	PerlIOCede_pushed (pTHX_ PerlIO *f, const char *mode, SV *arg, PerlIO_funcs *tab)
		1743	{
		1744	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1745
		1746	self->every = SvCUR (arg) ? SvNV (arg) : 0.01;
		1747	self->next = nvtime () + self->every;
		1748
		1749	return PerlIOBuf_pushed (aTHX_ f, mode, Nullsv, tab);
		1750	}
		1751
		1752	static SV *
		1753	PerlIOCede_getarg (pTHX_ PerlIO *f, CLONE_PARAMS *param, int flags)
		1754	{
		1755	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1756
		1757	return newSVnv (self->every);
		1758	}
		1759
		1760	static IV
		1761	PerlIOCede_flush (pTHX_ PerlIO *f)
		1762	{
		1763	PerlIOCede *self = PerlIOSelf (f, PerlIOCede);
		1764	double now = nvtime ();
		1765
		1766	if (now >= self->next)
1380	}	1767	{
		1768	api_cede ();
		1769	self->next = now + self->every;
		1770	}
		1771
		1772	return PerlIOBuf_flush (aTHX_ f);
1381	}	1773	}
		1774
		1775	static PerlIO_funcs PerlIO_cede =
		1776	{
		1777	sizeof(PerlIO_funcs),
		1778	"cede",
		1779	sizeof(PerlIOCede),
		1780	PERLIO_K_DESTRUCT | PERLIO_K_RAW,
		1781	PerlIOCede_pushed,
		1782	PerlIOBuf_popped,
		1783	PerlIOBuf_open,
		1784	PerlIOBase_binmode,
		1785	PerlIOCede_getarg,
		1786	PerlIOBase_fileno,
		1787	PerlIOBuf_dup,
		1788	PerlIOBuf_read,
		1789	PerlIOBuf_unread,
		1790	PerlIOBuf_write,
		1791	PerlIOBuf_seek,
		1792	PerlIOBuf_tell,
		1793	PerlIOBuf_close,
		1794	PerlIOCede_flush,
		1795	PerlIOBuf_fill,
		1796	PerlIOBase_eof,
		1797	PerlIOBase_error,
		1798	PerlIOBase_clearerr,
		1799	PerlIOBase_setlinebuf,
		1800	PerlIOBuf_get_base,
		1801	PerlIOBuf_bufsiz,
		1802	PerlIOBuf_get_ptr,
		1803	PerlIOBuf_get_cnt,
		1804	PerlIOBuf_set_ptrcnt,
		1805	};
		1806
1382		1807
1383	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_	1808	MODULE = Coro::State PACKAGE = Coro::State PREFIX = api_
1384		1809
1385	PROTOTYPES: DISABLE	1810	PROTOTYPES: DISABLE
1386		1811
1387	BOOT:	1812	BOOT:
1388	{	1813	{
1389	#ifdef USE_ITHREADS	1814	#ifdef USE_ITHREADS
1390	MUTEX_INIT (&coro_mutex);	1815	MUTEX_INIT (&coro_lock);
		1816	# if CORO_PTHREAD
		1817	coro_thx = PERL_GET_CONTEXT;
		1818	# endif
1391	#endif	1819	#endif
1392	BOOT_PAGESIZE;	1820	BOOT_PAGESIZE;
1393		1821
1394	irsgv = gv_fetchpv ("/", 1, SVt_PV);	1822	irsgv = gv_fetchpv ("/" , GV_ADD|GV_NOTQUAL, SVt_PV);
		1823	stdoutgv = gv_fetchpv ("STDOUT", GV_ADD|GV_NOTQUAL, SVt_PVIO);
		1824
		1825	orig_sigelem_get = PL_vtbl_sigelem.svt_get; PL_vtbl_sigelem.svt_get = coro_sigelem_get;
		1826	orig_sigelem_set = PL_vtbl_sigelem.svt_set; PL_vtbl_sigelem.svt_set = coro_sigelem_set;
		1827	orig_sigelem_clr = PL_vtbl_sigelem.svt_clear; PL_vtbl_sigelem.svt_clear = coro_sigelem_clr;
		1828
		1829	hv_sig = coro_get_hv (aTHX_ "SIG", TRUE);
		1830	rv_diehook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::diehook" , 0, SVt_PVCV));
		1831	rv_warnhook = newRV_inc ((SV *)gv_fetchpv ("Coro::State::warnhook", 0, SVt_PVCV));
1395		1832
1396	coro_state_stash = gv_stashpv ("Coro::State", TRUE);	1833	coro_state_stash = gv_stashpv ("Coro::State", TRUE);
1397		1834
1398	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));	1835	newCONSTSUB (coro_state_stash, "CC_TRACE" , newSViv (CC_TRACE));
1399	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));	1836	newCONSTSUB (coro_state_stash, "CC_TRACE_SUB" , newSViv (CC_TRACE_SUB));
…		…
1404	main_top_env = PL_top_env;	1841	main_top_env = PL_top_env;
1405		1842
1406	while (main_top_env->je_prev)	1843	while (main_top_env->je_prev)
1407	main_top_env = main_top_env->je_prev;	1844	main_top_env = main_top_env->je_prev;
1408		1845
1409	coroapi.ver = CORO_API_VERSION;	1846	coroapi.ver = CORO_API_VERSION;
		1847	coroapi.rev = CORO_API_REVISION;
1410	coroapi.transfer = api_transfer;	1848	coroapi.transfer = api_transfer;
		1849
		1850	{
		1851	SV **svp = hv_fetch (PL_modglobal, "Time::NVtime", 12, 0);
		1852
		1853	if (!svp) croak ("Time::HiRes is required");
		1854	if (!SvIOK (*svp)) croak ("Time::NVtime isn't a function pointer");
		1855
		1856	nvtime = INT2PTR (double (*)(), SvIV (*svp));
		1857	}
1411		1858
1412	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));	1859	assert (("PRIO_NORMAL must be 0", !PRIO_NORMAL));
1413	}	1860	}
1414		1861
1415	SV *	1862	SV *
1416	new (char *klass, ...)	1863	new (char *klass, ...)
1417	CODE:	1864	CODE:
1418	{	1865	{
1419	struct coro *coro;	1866	struct coro *coro;
		1867	MAGIC *mg;
1420	HV *hv;	1868	HV *hv;
1421	int i;	1869	int i;
1422		1870
1423	Newz (0, coro, 1, struct coro);	1871	Newz (0, coro, 1, struct coro);
1424	coro->args = newAV ();	1872	coro->args = newAV ();
…		…
1427	if (coro_first) coro_first->prev = coro;	1875	if (coro_first) coro_first->prev = coro;
1428	coro->next = coro_first;	1876	coro->next = coro_first;
1429	coro_first = coro;	1877	coro_first = coro;
1430		1878
1431	coro->hv = hv = newHV ();	1879	coro->hv = hv = newHV ();
1432	sv_magicext ((SV *)hv, 0, PERL_MAGIC_ext, &coro_state_vtbl, (char *)coro, 0)->mg_flags |= MGf_DUP;	1880	mg = sv_magicext ((SV *)hv, 0, CORO_MAGIC_type_state, &coro_state_vtbl, (char *)coro, 0);
		1881	mg->mg_flags |= MGf_DUP;
1433	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));	1882	RETVAL = sv_bless (newRV_noinc ((SV *)hv), gv_stashpv (klass, 1));
1434		1883
		1884	av_extend (coro->args, items - 1);
1435	for (i = 1; i < items; i++)	1885	for (i = 1; i < items; i++)
1436	av_push (coro->args, newSVsv (ST (i)));	1886	av_push (coro->args, newSVsv (ST (i)));
1437	}	1887	}
1438	OUTPUT:	1888	OUTPUT:
1439	RETVAL	1889	RETVAL
…		…
1450	Coro::cede_notself = 4	1900	Coro::cede_notself = 4
1451	CODE:	1901	CODE:
1452	{	1902	{
1453	struct transfer_args ta;	1903	struct transfer_args ta;
1454		1904
		1905	PUTBACK;
1455	switch (ix)	1906	switch (ix)
1456	{	1907	{
1457	case 0:	1908	case 0:
1458	ta.prev = (struct coro *)INT2PTR (coro_cctx *, SvIV (ST (0)));	1909	prepare_set_stacklevel (&ta, (struct coro_cctx *)SvIV (ST (0)));
1459	ta.next = 0;
1460	break;	1910	break;
1461		1911
1462	case 1:	1912	case 1:
1463	if (items != 2)	1913	if (items != 2)
1464	croak ("Coro::State::transfer (prev,next) expects two arguments, not %d", items);	1914	croak ("Coro::State::transfer (prev, next) expects two arguments, not %d", items);
1465		1915
1466	prepare_transfer (aTHX_ &ta, ST (0), ST (1));	1916	prepare_transfer (aTHX_ &ta, ST (0), ST (1));
1467	break;	1917	break;
1468		1918
1469	case 2:	1919	case 2:
…		…
1478	if (!prepare_cede_notself (aTHX_ &ta))	1928	if (!prepare_cede_notself (aTHX_ &ta))
1479	XSRETURN_EMPTY;	1929	XSRETURN_EMPTY;
1480		1930
1481	break;	1931	break;
1482	}	1932	}
		1933	SPAGAIN;
1483		1934
1484	BARRIER;	1935	BARRIER;
		1936	PUTBACK;
1485	TRANSFER (ta);	1937	TRANSFER (ta, 0);
1486		1938	SPAGAIN; /* might be the sp of a different coroutine now */
1487	if (GIMME_V != G_VOID && ta.next != ta.prev)	1939	/* be extra careful not to ever do anything after TRANSFER */
1488	XSRETURN_YES;
1489	}	1940	}
1490		1941
1491	bool	1942	bool
1492	_destroy (SV *coro_sv)	1943	_destroy (SV *coro_sv)
1493	CODE:	1944	CODE:
1494	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));	1945	RETVAL = coro_state_destroy (aTHX_ SvSTATE (coro_sv));
1495	OUTPUT:	1946	OUTPUT:
1496	RETVAL	1947	RETVAL
1497		1948
1498	void	1949	void
1499	_exit (code)	1950	_exit (int code)
1500	int code
1501	PROTOTYPE: $	1951	PROTOTYPE: $
1502	CODE:	1952	CODE:
1503	_exit (code);	1953	_exit (code);
1504		1954
1505	int	1955	int
1506	cctx_stacksize (int new_stacksize = 0)	1956	cctx_stacksize (int new_stacksize = 0)
1507	CODE:	1957	CODE:
1508	RETVAL = coro_stacksize;	1958	RETVAL = cctx_stacksize;
1509	if (new_stacksize)	1959	if (new_stacksize)
		1960	{
1510	coro_stacksize = new_stacksize;	1961	cctx_stacksize = new_stacksize;
		1962	++cctx_gen;
		1963	}
		1964	OUTPUT:
		1965	RETVAL
		1966
		1967	int
		1968	cctx_max_idle (int max_idle = 0)
		1969	CODE:
		1970	RETVAL = cctx_max_idle;
		1971	if (max_idle > 1)
		1972	cctx_max_idle = max_idle;
1511	OUTPUT:	1973	OUTPUT:
1512	RETVAL	1974	RETVAL
1513		1975
1514	int	1976	int
1515	cctx_count ()	1977	cctx_count ()
…		…
1539	call (Coro::State coro, SV *coderef)	2001	call (Coro::State coro, SV *coderef)
1540	ALIAS:	2002	ALIAS:
1541	eval = 1	2003	eval = 1
1542	CODE:	2004	CODE:
1543	{	2005	{
1544	if (coro->mainstack)	2006	if (coro->mainstack && ((coro->flags & CF_RUNNING) || coro->slot))
1545	{	2007	{
1546	struct coro temp;	2008	struct coro temp;
1547	Zero (&temp, 1, struct coro);
1548		2009
1549	if (!(coro->flags & CF_RUNNING))	2010	if (!(coro->flags & CF_RUNNING))
1550	{	2011	{
		2012	PUTBACK;
1551	save_perl (aTHX_ &temp);	2013	save_perl (aTHX_ &temp);
1552	load_perl (aTHX_ coro);	2014	load_perl (aTHX_ coro);
1553	}	2015	}
1554		2016
1555	{	2017	{
1556	dSP;	2018	dSP;
1557	ENTER;	2019	ENTER;
1558	SAVETMPS;	2020	SAVETMPS;
		2021	PUTBACK;
		2022	PUSHSTACK;
1559	PUSHMARK (SP);	2023	PUSHMARK (SP);
1560	PUTBACK;	2024
1561	if (ix)	2025	if (ix)
1562	eval_sv (coderef, 0);	2026	eval_sv (coderef, 0);
1563	else	2027	else
1564	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);	2028	call_sv (coderef, G_KEEPERR | G_EVAL | G_VOID | G_DISCARD);
		2029
		2030	POPSTACK;
1565	SPAGAIN;	2031	SPAGAIN;
1566	FREETMPS;	2032	FREETMPS;
1567	LEAVE;	2033	LEAVE;
1568	PUTBACK;	2034	PUTBACK;
1569	}	2035	}
1570		2036
1571	if (!(coro->flags & CF_RUNNING))	2037	if (!(coro->flags & CF_RUNNING))
1572	{	2038	{
1573	save_perl (aTHX_ coro);	2039	save_perl (aTHX_ coro);
1574	load_perl (aTHX_ &temp);	2040	load_perl (aTHX_ &temp);
		2041	SPAGAIN;
1575	}	2042	}
1576	}	2043	}
1577	}	2044	}
1578		2045
1579	SV *	2046	SV *
…		…
1588	RETVAL = boolSV (coro->flags & ix);	2055	RETVAL = boolSV (coro->flags & ix);
1589	OUTPUT:	2056	OUTPUT:
1590	RETVAL	2057	RETVAL
1591		2058
1592	void	2059	void
		2060	throw (Coro::State self, SV *throw = &PL_sv_undef)
		2061	PROTOTYPE: $;$
		2062	CODE:
		2063	SvREFCNT_dec (self->throw);
		2064	self->throw = SvOK (throw) ? newSVsv (throw) : 0;
		2065
		2066	void
1593	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)	2067	api_trace (SV *coro, int flags = CC_TRACE | CC_TRACE_SUB)
1594		2068
1595	SV *	2069	SV *
1596	has_stack (Coro::State coro)	2070	has_cctx (Coro::State coro)
1597	PROTOTYPE: $	2071	PROTOTYPE: $
1598	CODE:	2072	CODE:
1599	RETVAL = boolSV (!!coro->cctx);	2073	RETVAL = boolSV (!!coro->cctx);
1600	OUTPUT:	2074	OUTPUT:
1601	RETVAL	2075	RETVAL
…		…
1606	CODE:	2080	CODE:
1607	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;	2081	RETVAL = (coro->cctx ? coro->cctx->flags : 0) & CC_TRACE_ALL;
1608	OUTPUT:	2082	OUTPUT:
1609	RETVAL	2083	RETVAL
1610		2084
1611	IV	2085	UV
1612	rss (Coro::State coro)	2086	rss (Coro::State coro)
1613	PROTOTYPE: $	2087	PROTOTYPE: $
1614	ALIAS:	2088	ALIAS:
1615	usecount = 1	2089	usecount = 1
1616	CODE:	2090	CODE:
…		…
1620	case 1: RETVAL = coro->usecount; break;	2094	case 1: RETVAL = coro->usecount; break;
1621	}	2095	}
1622	OUTPUT:	2096	OUTPUT:
1623	RETVAL	2097	RETVAL
1624		2098
		2099	void
		2100	force_cctx ()
		2101	CODE:
		2102	struct coro *coro = SvSTATE (coro_current);
		2103	coro->cctx->idle_sp = 0;
		2104
		2105	void
		2106	swap_defsv (Coro::State self)
		2107	PROTOTYPE: $
		2108	ALIAS:
		2109	swap_defav = 1
		2110	CODE:
		2111	if (!self->slot)
		2112	croak ("cannot swap state with coroutine that has no saved state");
		2113	else
		2114	{
		2115	SV **src = ix ? (SV **)&GvAV (PL_defgv) : &GvSV (PL_defgv);
		2116	SV **dst = ix ? (SV **)&self->slot->defav : (SV **)&self->slot->defsv;
		2117
		2118	SV *tmp = *src; *src = *dst; *dst = tmp;
		2119	}
1625		2120
1626	MODULE = Coro::State PACKAGE = Coro	2121	MODULE = Coro::State PACKAGE = Coro
1627		2122
1628	BOOT:	2123	BOOT:
1629	{	2124	{
1630	int i;	2125	int i;
1631		2126
1632	sv_pool_rss = get_sv ("Coro::POOL_RSS" , TRUE);
1633	sv_pool_size = get_sv ("Coro::POOL_SIZE" , TRUE);
1634	av_async_pool = get_av ("Coro::async_pool", TRUE);	2127	av_async_pool = coro_get_av (aTHX_ "Coro::async_pool", TRUE);
		2128	sv_pool_rss = coro_get_sv (aTHX_ "Coro::POOL_RSS" , TRUE);
		2129	sv_pool_size = coro_get_sv (aTHX_ "Coro::POOL_SIZE" , TRUE);
1635		2130
1636	coro_current = get_sv ("Coro::current", FALSE);	2131	coro_current = coro_get_sv (aTHX_ "Coro::current", FALSE);
1637	SvREADONLY_on (coro_current);	2132	SvREADONLY_on (coro_current);
1638		2133
1639	coro_stash = gv_stashpv ("Coro", TRUE);	2134	coro_stash = gv_stashpv ("Coro", TRUE);
1640		2135
1641	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));	2136	newCONSTSUB (coro_stash, "PRIO_MAX", newSViv (PRIO_MAX));
1642	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));	2137	newCONSTSUB (coro_stash, "PRIO_HIGH", newSViv (PRIO_HIGH));
1643	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));	2138	newCONSTSUB (coro_stash, "PRIO_NORMAL", newSViv (PRIO_NORMAL));
1644	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));	2139	newCONSTSUB (coro_stash, "PRIO_LOW", newSViv (PRIO_LOW));
…		…
1647		2142
1648	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )	2143	for (i = PRIO_MAX - PRIO_MIN + 1; i--; )
1649	coro_ready[i] = newAV ();	2144	coro_ready[i] = newAV ();
1650		2145
1651	{	2146	{
1652	SV *sv = perl_get_sv("Coro::API", 1);	2147	SV *sv = perl_get_sv ("Coro::API", TRUE);
		2148	perl_get_sv ("Coro::API", TRUE); /* silence 5.10 warning */
1653		2149
1654	coroapi.schedule = api_schedule;	2150	coroapi.schedule = api_schedule;
1655	coroapi.cede = api_cede;	2151	coroapi.cede = api_cede;
1656	coroapi.cede_notself = api_cede_notself;	2152	coroapi.cede_notself = api_cede_notself;
1657	coroapi.ready = api_ready;	2153	coroapi.ready = api_ready;
…		…
1668	void	2164	void
1669	_set_current (SV *current)	2165	_set_current (SV *current)
1670	PROTOTYPE: $	2166	PROTOTYPE: $
1671	CODE:	2167	CODE:
1672	SvREFCNT_dec (SvRV (coro_current));	2168	SvREFCNT_dec (SvRV (coro_current));
1673	SvRV_set (coro_current, SvREFCNT_inc (SvRV (current)));	2169	SvRV_set (coro_current, SvREFCNT_inc_NN (SvRV (current)));
		2170
		2171	void
		2172	_set_readyhook (SV *hook)
		2173	PROTOTYPE: $
		2174	CODE:
		2175	LOCK;
		2176	SvREFCNT_dec (coro_readyhook);
		2177	coro_readyhook = SvOK (hook) ? newSVsv (hook) : 0;
		2178	UNLOCK;
1674		2179
1675	int	2180	int
1676	prio (Coro::State coro, int newprio = 0)	2181	prio (Coro::State coro, int newprio = 0)
1677	ALIAS:	2182	ALIAS:
1678	nice = 1	2183	nice = 1
…		…
1721	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);	2226	SV *invoke = hv_delete (hv, "_invoke", sizeof ("_invoke") - 1, 0);
1722	AV *invoke_av;	2227	AV *invoke_av;
1723	int i, len;	2228	int i, len;
1724		2229
1725	if (!invoke)	2230	if (!invoke)
		2231	{
		2232	SV *old = PL_diehook;
		2233	PL_diehook = 0;
		2234	SvREFCNT_dec (old);
1726	croak ("\3terminate\2\n");	2235	croak ("\3async_pool terminate\2\n");
		2236	}
1727		2237
1728	SvREFCNT_dec (coro->asp_deffh);	2238	SvREFCNT_dec (coro->saved_deffh);
1729	coro->asp_deffh = SvREFCNT_inc (PL_defoutgv);	2239	coro->saved_deffh = SvREFCNT_inc_NN ((SV *)PL_defoutgv);
1730		2240
1731	hv_store (hv, "desc", sizeof ("desc") - 1,	2241	hv_store (hv, "desc", sizeof ("desc") - 1,
1732	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);	2242	newSVpvn ("[async_pool]", sizeof ("[async_pool]") - 1), 0);
1733		2243
1734	invoke_av = (AV *)SvRV (invoke);	2244	invoke_av = (AV *)SvRV (invoke);
…		…
1738		2248
1739	if (len > 0)	2249	if (len > 0)
1740	{	2250	{
1741	av_fill (defav, len - 1);	2251	av_fill (defav, len - 1);
1742	for (i = 0; i < len; ++i)	2252	for (i = 0; i < len; ++i)
1743	av_store (defav, i, SvREFCNT_inc (AvARRAY (invoke_av)[i + 1]));	2253	av_store (defav, i, SvREFCNT_inc_NN (AvARRAY (invoke_av)[i + 1]));
1744	}	2254	}
1745		2255
1746	SvREFCNT_dec (invoke);	2256	SvREFCNT_dec (invoke);
1747	}	2257	}
1748		2258
…		…
1752	{	2262	{
1753	struct coro *coro = SvSTATE (coro_current);	2263	struct coro *coro = SvSTATE (coro_current);
1754		2264
1755	sv_setsv (cb, &PL_sv_undef);	2265	sv_setsv (cb, &PL_sv_undef);
1756		2266
1757	SvREFCNT_dec (PL_defoutgv); PL_defoutgv = coro->asp_deffh;	2267	SvREFCNT_dec ((SV *)PL_defoutgv); PL_defoutgv = (GV *)coro->saved_deffh;
1758	coro->asp_deffh = 0;	2268	coro->saved_deffh = 0;
1759		2269
1760	if (coro_rss (aTHX_ coro) > SvIV (sv_pool_rss)	2270	if (coro_rss (aTHX_ coro) > SvUV (sv_pool_rss)
1761	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))	2271	|| av_len (av_async_pool) + 1 >= SvIV (sv_pool_size))
		2272	{
		2273	SV *old = PL_diehook;
		2274	PL_diehook = 0;
		2275	SvREFCNT_dec (old);
1762	croak ("\3terminate\2\n");	2276	croak ("\3async_pool terminate\2\n");
		2277	}
1763		2278
1764	av_clear (GvAV (PL_defgv));	2279	av_clear (GvAV (PL_defgv));
1765	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,	2280	hv_store ((HV *)SvRV (coro_current), "desc", sizeof ("desc") - 1,
1766	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);	2281	newSVpvn ("[async_pool idle]", sizeof ("[async_pool idle]") - 1), 0);
1767		2282
…		…
1771	api_trace (coro_current, 0);	2286	api_trace (coro_current, 0);
1772		2287
1773	av_push (av_async_pool, newSVsv (coro_current));	2288	av_push (av_async_pool, newSVsv (coro_current));
1774	}	2289	}
1775		2290
		2291	#if 0
		2292
		2293	void
		2294	_generator_call (...)
		2295	PROTOTYPE: @
		2296	PPCODE:
		2297	fprintf (stderr, "call %p\n", CvXSUBANY(cv).any_ptr);
		2298	xxxx
		2299	abort ();
		2300
		2301	SV *
		2302	gensub (SV *sub, ...)
		2303	PROTOTYPE: &;@
		2304	CODE:
		2305	{
		2306	struct coro *coro;
		2307	MAGIC *mg;
		2308	CV *xcv;
		2309	CV *ncv = (CV *)newSV_type (SVt_PVCV);
		2310	int i;
		2311
		2312	CvGV (ncv) = CvGV (cv);
		2313	CvFILE (ncv) = CvFILE (cv);
		2314
		2315	Newz (0, coro, 1, struct coro);
		2316	coro->args = newAV ();
		2317	coro->flags = CF_NEW;
		2318
		2319	av_extend (coro->args, items - 1);
		2320	for (i = 1; i < items; i++)
		2321	av_push (coro->args, newSVsv (ST (i)));
		2322
		2323	CvISXSUB_on (ncv);
		2324	CvXSUBANY (ncv).any_ptr = (void *)coro;
		2325
		2326	xcv = GvCV (gv_fetchpv ("Coro::_generator_call", 0, SVt_PVCV));
		2327
		2328	CvXSUB (ncv) = CvXSUB (xcv);
		2329	CvANON_on (ncv);
		2330
		2331	mg = sv_magicext ((SV *)ncv, 0, CORO_MAGIC_type_state, &coro_gensub_vtbl, (char *)coro, 0);
		2332	RETVAL = newRV_noinc ((SV *)ncv);
		2333	}
		2334	OUTPUT:
		2335	RETVAL
		2336
		2337	#endif
		2338
1776		2339
1777	MODULE = Coro::State PACKAGE = Coro::AIO	2340	MODULE = Coro::State PACKAGE = Coro::AIO
1778		2341
1779	SV *	2342	void
1780	_get_state ()	2343	_get_state (SV *self)
1781	CODE:	2344	PPCODE:
1782	{	2345	{
1783	struct io_state *data;	2346	AV *defav = GvAV (PL_defgv);
1784		2347	AV *av = newAV ();
		2348	int i;
1785	RETVAL = newSV (sizeof (struct io_state));	2349	SV *data_sv = newSV (sizeof (struct io_state));
1786	data = (struct io_state *)SvPVX (RETVAL);	2350	struct io_state *data = (struct io_state *)SvPVX (data_sv);
1787	SvCUR_set (RETVAL, sizeof (struct io_state));	2351	SvCUR_set (data_sv, sizeof (struct io_state));
1788	SvPOK_only (RETVAL);	2352	SvPOK_only (data_sv);
1789		2353
1790	data->errorno = errno;	2354	data->errorno = errno;
1791	data->laststype = PL_laststype;	2355	data->laststype = PL_laststype;
1792	data->laststatval = PL_laststatval;	2356	data->laststatval = PL_laststatval;
1793	data->statcache = PL_statcache;	2357	data->statcache = PL_statcache;
		2358
		2359	av_extend (av, AvFILLp (defav) + 1 + 1);
		2360
		2361	for (i = 0; i <= AvFILLp (defav); ++i)
		2362	av_push (av, SvREFCNT_inc_NN (AvARRAY (defav)[i]));
		2363
		2364	av_push (av, data_sv);
		2365
		2366	XPUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		2367
		2368	api_ready (self);
1794	}	2369	}
1795	OUTPUT:
1796	RETVAL
1797		2370
1798	void	2371	void
1799	_set_state (char *data_)	2372	_set_state (SV *state)
1800	PROTOTYPE: $	2373	PROTOTYPE: $
1801	CODE:	2374	PPCODE:
1802	{	2375	{
1803	struct io_state *data = (void *)data_;	2376	AV *av = (AV *)SvRV (state);
		2377	struct io_state *data = (struct io_state *)SvPVX (AvARRAY (av)[AvFILLp (av)]);
		2378	int i;
1804		2379
1805	errno = data->errorno;	2380	errno = data->errorno;
1806	PL_laststype = data->laststype;	2381	PL_laststype = data->laststype;
1807	PL_laststatval = data->laststatval;	2382	PL_laststatval = data->laststatval;
1808	PL_statcache = data->statcache;	2383	PL_statcache = data->statcache;
1809	}
1810		2384
		2385	EXTEND (SP, AvFILLp (av));
		2386	for (i = 0; i < AvFILLp (av); ++i)
		2387	PUSHs (sv_2mortal (SvREFCNT_inc_NN (AvARRAY (av)[i])));
		2388	}
		2389
		2390
		2391	MODULE = Coro::State PACKAGE = Coro::AnyEvent
		2392
		2393	BOOT:
		2394	sv_activity = coro_get_sv (aTHX_ "Coro::AnyEvent::ACTIVITY", TRUE);
		2395
		2396	SV *
		2397	_schedule (...)
		2398	PROTOTYPE: @
		2399	CODE:
		2400	{
		2401	static int incede;
		2402
		2403	api_cede_notself ();
		2404
		2405	++incede;
		2406	while (coro_nready >= incede && api_cede ())
		2407	;
		2408
		2409	sv_setsv (sv_activity, &PL_sv_undef);
		2410	if (coro_nready >= incede)
		2411	{
		2412	PUSHMARK (SP);
		2413	PUTBACK;
		2414	call_pv ("Coro::AnyEvent::_activity", G_DISCARD | G_EVAL);
		2415	SPAGAIN;
		2416	}
		2417
		2418	--incede;
		2419	}
		2420
		2421
		2422	MODULE = Coro::State PACKAGE = PerlIO::cede
		2423
		2424	BOOT:
		2425	PerlIO_define_layer (aTHX_ &PerlIO_cede);

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