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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.59 by root, Mon Oct 23 18:56:27 2006 UTC vs.
Revision 1.84 by root, Sat Oct 28 01:24:19 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
		5	# define _GNU_SOURCE
		6	#endif
		7
		8	/* just in case */
1	#define _REENTRANT 1	9	#define _REENTRANT 1
		10
2	#include <errno.h>	11	#include <errno.h>
3		12
4	#include "EXTERN.h"	13	#include "EXTERN.h"
5	#include "perl.h"	14	#include "perl.h"
6	#include "XSUB.h"	15	#include "XSUB.h"
…		…
34	# else	43	# else
35	# error sendfile support requested but not available	44	# error sendfile support requested but not available
36	# endif	45	# endif
37	#endif	46	#endif
38		47
		48	/* number of seconds after which idle threads exit */
		49	#define IDLE_TIMEOUT 10
		50
39	/* used for struct dirent, AIX doesn't provide it */	51	/* used for struct dirent, AIX doesn't provide it */
40	#ifndef NAME_MAX	52	#ifndef NAME_MAX
41	# define NAME_MAX 4096	53	# define NAME_MAX 4096
42	#endif	54	#endif
43		55
		56	#ifndef PTHREAD_STACK_MIN
		57	/* care for broken platforms, e.g. windows */
		58	# define PTHREAD_STACK_MIN 16384
		59	#endif
		60
44	#if __ia64	61	#if __ia64
45	# define STACKSIZE 65536	62	# define STACKSIZE 65536
		63	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		64	# define STACKSIZE PTHREAD_STACK_MIN
46	#else	65	#else
47	# define STACKSIZE 8192	66	# define STACKSIZE 16384
		67	#endif
		68
		69	/* wether word reads are potentially non-atomic.
		70	* this is conservatice, likely most arches this runs
		71	* on have atomic word read/writes.
		72	*/
		73	#ifndef WORDREAD_UNSAFE
		74	# if __i386 || __x86_64
		75	# define WORDREAD_UNSAFE 0
		76	# else
		77	# define WORDREAD_UNSAFE 1
48	#endif	78	# endif
		79	#endif
		80
		81	/* buffer size for various temporary buffers */
		82	#define AIO_BUFSIZE 65536
		83
		84	#define dBUF \
		85	char *aio_buf; \
		86	LOCK (wrklock); \
		87	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		88	UNLOCK (wrklock); \
		89	if (!aio_buf) \
		90	return -1;
49		91
50	enum {	92	enum {
51	REQ_QUIT,	93	REQ_QUIT,
52	REQ_OPEN, REQ_CLOSE,	94	REQ_OPEN, REQ_CLOSE,
53	REQ_READ, REQ_WRITE, REQ_READAHEAD,	95	REQ_READ, REQ_WRITE, REQ_READAHEAD,
54	REQ_SENDFILE,	96	REQ_SENDFILE,
55	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	97	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
56	REQ_FSYNC, REQ_FDATASYNC,	98	REQ_FSYNC, REQ_FDATASYNC,
57	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	99	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
58	REQ_READDIR,	100	REQ_MKNOD, REQ_READDIR,
59	REQ_LINK, REQ_SYMLINK,	101	REQ_LINK, REQ_SYMLINK,
60	REQ_GROUP, REQ_NOP,	102	REQ_GROUP, REQ_NOP,
61	REQ_SLEEP,	103	REQ_BUSY,
62	};	104	};
63		105
64	#define AIO_REQ_KLASS "IO::AIO::REQ"	106	#define AIO_REQ_KLASS "IO::AIO::REQ"
65	#define AIO_GRP_KLASS "IO::AIO::GRP"	107	#define AIO_GRP_KLASS "IO::AIO::GRP"
66		108
67	typedef struct aio_cb	109	typedef struct aio_cb
68	{	110	{
69	struct aio_cb *volatile next;	111	struct aio_cb *volatile next;
70
71	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72
73	SV *self; /* the perl counterpart of this request, if any */
74		112
75	SV *data, *callback;	113	SV *data, *callback;
76	SV *fh, *fh2;	114	SV *fh, *fh2;
77	void *dataptr, *data2ptr;	115	void *dataptr, *data2ptr;
78	Stat_t *statdata;	116	Stat_t *statdata;
79	off_t offset;	117	off_t offset;
80	size_t length;	118	size_t length;
81	ssize_t result;	119	ssize_t result;
82		120
		121	STRLEN dataoffset;
83	int type;	122	int type;
84	int fd, fd2;	123	int fd, fd2;
85	int errorno;	124	int errorno;
86	STRLEN dataoffset;
87	mode_t mode; /* open */	125	mode_t mode; /* open */
		126
		127	unsigned char flags;
88	unsigned char pri;	128	unsigned char pri;
89	unsigned char flags;	129
		130	SV *self; /* the perl counterpart of this request, if any */
		131	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
90	} aio_cb;	132	} aio_cb;
91		133
92	enum {	134	enum {
93	FLAG_CANCELLED = 0x01,	135	FLAG_CANCELLED = 0x01,
94	};	136	};
95		137
96	typedef aio_cb *aio_req;	138	typedef aio_cb *aio_req;
97	typedef aio_cb *aio_req_ornot;	139	typedef aio_cb *aio_req_ornot;
98		140
		141	enum {
		142	PRI_MIN = -4,
		143	PRI_MAX = 4,
		144
		145	DEFAULT_PRI = 0,
		146	PRI_BIAS = -PRI_MIN,
		147	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		148	};
		149
		150	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		151
99	static int started, wanted;	152	static unsigned int started, idle, wanted;
100	static volatile int nreqs;	153
101	static int max_outstanding = 1<<30;	154	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		155	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		156	#else
		157	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		158	#endif
		159
		160	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		161	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		162
		163	/* worker threads management */
		164	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		165
		166	typedef struct worker {
		167	/* locked by wrklock */
		168	struct worker *prev, *next;
		169
		170	pthread_t tid;
		171
		172	/* locked by reslock, reqlock or wrklock */
		173	aio_req req; /* currently processed request */
		174	void *dbuf;
		175	DIR *dirp;
		176	} worker;
		177
		178	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		179
		180	static void worker_clear (worker *wrk)
		181	{
		182	if (wrk->dirp)
		183	{
		184	closedir (wrk->dirp);
		185	wrk->dirp = 0;
		186	}
		187
		188	if (wrk->dbuf)
		189	{
		190	free (wrk->dbuf);
		191	wrk->dbuf = 0;
		192	}
		193	}
		194
		195	static void worker_free (worker *wrk)
		196	{
		197	wrk->next->prev = wrk->prev;
		198	wrk->prev->next = wrk->next;
		199
		200	free (wrk);
		201	}
		202
		203	static volatile unsigned int nreqs, nready, npending;
		204	static volatile unsigned int max_idle = 4;
		205	static volatile unsigned int max_outstanding = 0xffffffff;
102	static int respipe [2];	206	static int respipe [2];
103		207
104	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	208	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
105	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	209	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
106	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	210	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
107		211
108	static volatile aio_req reqs, reqe; /* queue start, queue end */	212	#if WORDREAD_UNSAFE
109	static volatile aio_req ress, rese; /* queue start, queue end */
110		213
		214	static unsigned int get_nready ()
		215	{
		216	unsigned int retval;
		217
		218	LOCK (reqlock);
		219	retval = nready;
		220	UNLOCK (reqlock);
		221
		222	return retval;
		223	}
		224
		225	static unsigned int get_npending ()
		226	{
		227	unsigned int retval;
		228
		229	LOCK (reslock);
		230	retval = npending;
		231	UNLOCK (reslock);
		232
		233	return retval;
		234	}
		235
		236	#else
		237
		238	# define get_nready() nready
		239	# define get_npending() npending
		240
		241	#endif
		242
		243	/*
		244	* a somewhat faster data structure might be nice, but
		245	* with 8 priorities this actually needs <20 insns
		246	* per shift, the most expensive operation.
		247	*/
		248	typedef struct {
		249	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		250	int size;
		251	} reqq;
		252
		253	static reqq req_queue;
		254	static reqq res_queue;
		255
		256	int reqq_push (reqq *q, aio_req req)
		257	{
		258	int pri = req->pri;
		259	req->next = 0;
		260
		261	if (q->qe[pri])
		262	{
		263	q->qe[pri]->next = req;
		264	q->qe[pri] = req;
		265	}
		266	else
		267	q->qe[pri] = q->qs[pri] = req;
		268
		269	return q->size++;
		270	}
		271
		272	aio_req reqq_shift (reqq *q)
		273	{
		274	int pri;
		275
		276	if (!q->size)
		277	return 0;
		278
		279	--q->size;
		280
		281	for (pri = NUM_PRI; pri--; )
		282	{
		283	aio_req req = q->qs[pri];
		284
		285	if (req)
		286	{
		287	if (!(q->qs[pri] = req->next))
		288	q->qe[pri] = 0;
		289
		290	return req;
		291	}
		292	}
		293
		294	abort ();
		295	}
		296
		297	static int poll_cb (int max);
111	static void req_invoke (aio_req req);	298	static void req_invoke (aio_req req);
112	static void req_free (aio_req req);	299	static void req_free (aio_req req);
		300	static void req_cancel (aio_req req);
113		301
114	/* must be called at most once */	302	/* must be called at most once */
115	static SV *req_sv (aio_req req, const char *klass)	303	static SV *req_sv (aio_req req, const char *klass)
116	{	304	{
117	if (!req->self)	305	if (!req->self)
…		…
148	ENTER;	336	ENTER;
149	SAVETMPS;	337	SAVETMPS;
150	PUSHMARK (SP);	338	PUSHMARK (SP);
151	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	339	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
152	PUTBACK;	340	PUTBACK;
153	call_sv (grp->fh2, G_VOID | G_EVAL);	341	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
154	SPAGAIN;	342	SPAGAIN;
155	FREETMPS;	343	FREETMPS;
156	LEAVE;	344	LEAVE;
157	}	345	}
158		346
…		…
179	req_invoke (grp);	367	req_invoke (grp);
180	req_free (grp);	368	req_free (grp);
181	}	369	}
182	}	370	}
183		371
184	static void poll_wait ()
185	{
186	if (nreqs && !ress)
187	{
188	fd_set rfd;
189	FD_ZERO(&rfd);
190	FD_SET(respipe [0], &rfd);
191
192	select (respipe [0] + 1, &rfd, 0, 0, 0);
193	}
194	}
195
196	static void req_invoke (aio_req req)	372	static void req_invoke (aio_req req)
197	{	373	{
198	dSP;	374	dSP;
199	int errorno = errno;
200		375
201	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))	376	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
202	return;	377	{
203
204	errno = req->errorno;
205
206	ENTER;	378	ENTER;
207	SAVETMPS;	379	SAVETMPS;
208	PUSHMARK (SP);	380	PUSHMARK (SP);
209	EXTEND (SP, 1);	381	EXTEND (SP, 1);
210		382
211	switch (req->type)	383	switch (req->type)
212	{
213	case REQ_READDIR:
214	{	384	{
215	SV *rv = &PL_sv_undef;	385	case REQ_READDIR:
216
217	if (req->result >= 0)
218	{	386	{
219	char *buf = req->data2ptr;	387	SV *rv = &PL_sv_undef;
220	AV *av = newAV ();
221		388
222	while (req->result)	389	if (req->result >= 0)
223	{	390	{
		391	int i;
		392	char *buf = req->data2ptr;
		393	AV *av = newAV ();
		394
		395	av_extend (av, req->result - 1);
		396
		397	for (i = 0; i < req->result; ++i)
		398	{
224	SV *sv = newSVpv (buf, 0);	399	SV *sv = newSVpv (buf, 0);
225		400
226	av_push (av, sv);	401	av_store (av, i, sv);
227	buf += SvCUR (sv) + 1;	402	buf += SvCUR (sv) + 1;
228	req->result--;	403	}
		404
		405	rv = sv_2mortal (newRV_noinc ((SV *)av));
229	}	406	}
230		407
231	rv = sv_2mortal (newRV_noinc ((SV *)av));	408	PUSHs (rv);
232	}	409	}
		410	break;
233		411
234	PUSHs (rv);	412	case REQ_OPEN:
		413	{
		414	/* convert fd to fh */
		415	SV *fh;
		416
		417	PUSHs (sv_2mortal (newSViv (req->result)));
		418	PUTBACK;
		419	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		420	SPAGAIN;
		421
		422	fh = SvREFCNT_inc (POPs);
		423
		424	PUSHMARK (SP);
		425	XPUSHs (sv_2mortal (fh));
		426	}
		427	break;
		428
		429	case REQ_GROUP:
		430	req->fd = 2; /* mark group as finished */
		431
		432	if (req->data)
		433	{
		434	int i;
		435	AV *av = (AV *)req->data;
		436
		437	EXTEND (SP, AvFILL (av) + 1);
		438	for (i = 0; i <= AvFILL (av); ++i)
		439	PUSHs (*av_fetch (av, i, 0));
		440	}
		441	break;
		442
		443	case REQ_NOP:
		444	case REQ_BUSY:
		445	break;
		446
		447	default:
		448	PUSHs (sv_2mortal (newSViv (req->result)));
		449	break;
235	}	450	}
236	break;
237		451
238	case REQ_OPEN:	452	errno = req->errorno;
239	{
240	/* convert fd to fh */
241	SV *fh;
242		453
243	PUSHs (sv_2mortal (newSViv (req->result)));
244	PUTBACK;	454	PUTBACK;
245	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
246	SPAGAIN;
247
248	fh = SvREFCNT_inc (POPs);
249
250	PUSHMARK (SP);
251	XPUSHs (sv_2mortal (fh));
252	}
253	break;
254
255	case REQ_GROUP:
256	req->fd = 2; /* mark group as finished */
257
258	if (req->data)
259	{
260	int i;
261	AV *av = (AV *)req->data;
262
263	EXTEND (SP, AvFILL (av) + 1);
264	for (i = 0; i <= AvFILL (av); ++i)
265	PUSHs (*av_fetch (av, i, 0));
266	}
267	break;
268
269	case REQ_NOP:
270	case REQ_SLEEP:
271	break;
272
273	default:
274	PUSHs (sv_2mortal (newSViv (req->result)));
275	break;
276	}
277
278
279	PUTBACK;
280	call_sv (req->callback, G_VOID | G_EVAL);	455	call_sv (req->callback, G_VOID | G_EVAL);
281	SPAGAIN;	456	SPAGAIN;
282		457
283	FREETMPS;	458	FREETMPS;
284	LEAVE;	459	LEAVE;
285
286	errno = errorno;
287
288	if (SvTRUE (ERRSV))
289	{	460	}
290	req_free (req);
291	croak (0);
292	}
293	}
294		461
295	static void req_free (aio_req req)
296	{
297	if (req->grp)	462	if (req->grp)
298	{	463	{
299	aio_req grp = req->grp;	464	aio_req grp = req->grp;
300		465
301	/* unlink request */	466	/* unlink request */
…		…
306	grp->grp_first = req->grp_next;	471	grp->grp_first = req->grp_next;
307		472
308	aio_grp_dec (grp);	473	aio_grp_dec (grp);
309	}	474	}
310		475
		476	if (SvTRUE (ERRSV))
		477	{
		478	req_free (req);
		479	croak (0);
		480	}
		481	}
		482
		483	static void req_free (aio_req req)
		484	{
311	if (req->self)	485	if (req->self)
312	{	486	{
313	sv_unmagic (req->self, PERL_MAGIC_ext);	487	sv_unmagic (req->self, PERL_MAGIC_ext);
314	SvREFCNT_dec (req->self);	488	SvREFCNT_dec (req->self);
315	}	489	}
…		…
318	SvREFCNT_dec (req->fh);	492	SvREFCNT_dec (req->fh);
319	SvREFCNT_dec (req->fh2);	493	SvREFCNT_dec (req->fh2);
320	SvREFCNT_dec (req->callback);	494	SvREFCNT_dec (req->callback);
321	Safefree (req->statdata);	495	Safefree (req->statdata);
322		496
323	if (req->type == REQ_READDIR && req->result >= 0)	497	if (req->type == REQ_READDIR)
324	free (req->data2ptr);	498	free (req->data2ptr);
325		499
326	Safefree (req);	500	Safefree (req);
327	}	501	}
328		502
		503	static void req_cancel_subs (aio_req grp)
		504	{
		505	aio_req sub;
		506
		507	if (grp->type != REQ_GROUP)
		508	return;
		509
		510	SvREFCNT_dec (grp->fh2);
		511	grp->fh2 = 0;
		512
		513	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		514	req_cancel (sub);
		515	}
		516
329	static void req_cancel (aio_req req)	517	static void req_cancel (aio_req req)
330	{	518	{
331	req->flags |= FLAG_CANCELLED;	519	req->flags |= FLAG_CANCELLED;
332		520
333	if (req->type == REQ_GROUP)	521	req_cancel_subs (req);
334	{	522	}
335	aio_req sub;
336		523
337	for (sub = req->grp_first; sub; sub = sub->grp_next)	524	static void *aio_proc(void *arg);
338	req_cancel (sub);	525
		526	static void start_thread (void)
		527	{
		528	sigset_t fullsigset, oldsigset;
		529	pthread_attr_t attr;
		530
		531	worker *wrk = calloc (1, sizeof (worker));
		532
		533	if (!wrk)
		534	croak ("unable to allocate worker thread data");
		535
		536	pthread_attr_init (&attr);
		537	pthread_attr_setstacksize (&attr, STACKSIZE);
		538	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		539	#ifdef PTHREAD_SCOPE_PROCESS
		540	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		541	#endif
		542
		543	sigfillset (&fullsigset);
		544
		545	LOCK (wrklock);
		546	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		547
		548	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
339	}	549	{
340	}	550	wrk->prev = &wrk_first;
		551	wrk->next = wrk_first.next;
		552	wrk_first.next->prev = wrk;
		553	wrk_first.next = wrk;
		554	++started;
		555	}
		556	else
		557	free (wrk);
341		558
		559	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		560	UNLOCK (wrklock);
		561	}
		562
		563	static void maybe_start_thread ()
		564	{
		565	if (started >= wanted)
		566	return;
		567
		568	/* todo: maybe use idle here, but might be less exact */
		569	if ((int)nready <= (int)started - (int)(nreqs - get_nready () - get_npending ()))
		570	return;
		571
		572	start_thread ();
		573	}
		574
		575	static void req_send (aio_req req)
		576	{
		577	++nreqs;
		578
		579	LOCK (reqlock);
		580	++nready;
		581	reqq_push (&req_queue, req);
		582	pthread_cond_signal (&reqwait);
		583	UNLOCK (reqlock);
		584
		585	maybe_start_thread ();
		586	}
		587
		588	static void end_thread (void)
		589	{
		590	aio_req req;
		591
		592	Newz (0, req, 1, aio_cb);
		593
		594	req->type = REQ_QUIT;
		595	req->pri = PRI_MAX + PRI_BIAS;
		596
		597	LOCK (reqlock);
		598	reqq_push (&req_queue, req);
		599	pthread_cond_signal (&reqwait);
		600	UNLOCK (reqlock);
		601
		602	LOCK (wrklock);
		603	--started;
		604	UNLOCK (wrklock);
		605	}
		606
		607	static void min_parallel (int nthreads)
		608	{
		609	if (wanted < nthreads)
		610	wanted = nthreads;
		611	}
		612
		613	static void max_parallel (int nthreads)
		614	{
		615	if (wanted > nthreads)
		616	wanted = nthreads;
		617
		618	while (started > wanted)
		619	end_thread ();
		620	}
		621
		622	static void poll_wait ()
		623	{
		624	fd_set rfd;
		625
		626	while (nreqs)
		627	{
		628	int size;
		629	if (WORDREAD_UNSAFE) LOCK (reslock);
		630	size = res_queue.size;
		631	if (WORDREAD_UNSAFE) UNLOCK (reslock);
		632
		633	if (size)
		634	return;
		635
		636	maybe_start_thread ();
		637
		638	FD_ZERO(&rfd);
		639	FD_SET(respipe [0], &rfd);
		640
		641	select (respipe [0] + 1, &rfd, 0, 0, 0);
		642	}
		643	}
		644
342	static int poll_cb ()	645	static int poll_cb (int max)
343	{	646	{
344	dSP;	647	dSP;
345	int count = 0;	648	int count = 0;
346	int do_croak = 0;	649	int do_croak = 0;
347	aio_req req;	650	aio_req req;
348		651
349	for (;;)	652	for (;;)
350	{	653	{
351	pthread_mutex_lock (&reslock);	654	while (max <= 0 || count < max)
352	req = ress;
353
354	if (req)
355	{	655	{
356	ress = req->next;	656	maybe_start_thread ();
357		657
		658	LOCK (reslock);
		659	req = reqq_shift (&res_queue);
		660
358	if (!ress)	661	if (req)
359	{	662	{
		663	--npending;
		664
		665	if (!res_queue.size)
		666	{
360	/* read any signals sent by the worker threads */	667	/* read any signals sent by the worker threads */
361	char buf [32];	668	char buf [32];
362	while (read (respipe [0], buf, 32) == 32)	669	while (read (respipe [0], buf, 32) == 32)
		670	;
363	;	671	}
364
365	rese = 0;
366	}	672	}
		673
		674	UNLOCK (reslock);
		675
		676	if (!req)
		677	break;
		678
		679	--nreqs;
		680
		681	if (req->type == REQ_GROUP && req->length)
		682	{
		683	req->fd = 1; /* mark request as delayed */
		684	continue;
		685	}
		686	else
		687	{
		688	if (req->type == REQ_READ)
		689	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		690
		691	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		692	SvREADONLY_off (req->data);
		693
		694	if (req->statdata)
		695	{
		696	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		697	PL_laststatval = req->result;
		698	PL_statcache = *(req->statdata);
		699	}
		700
		701	req_invoke (req);
		702
		703	count++;
		704	}
		705
		706	req_free (req);
367	}	707	}
368		708
369	pthread_mutex_unlock (&reslock);	709	if (nreqs <= max_outstanding)
370
371	if (!req)
372	break;	710	break;
373		711
374	--nreqs;	712	poll_wait ();
375		713
376	if (req->type == REQ_QUIT)	714	max = 0;
377	started--;
378	else if (req->type == REQ_GROUP && req->length)
379	{
380	req->fd = 1; /* mark request as delayed */
381	continue;
382	}
383	else
384	{
385	if (req->type == REQ_READ)
386	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
387
388	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
389	SvREADONLY_off (req->data);
390
391	if (req->statdata)
392	{
393	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
394	PL_laststatval = req->result;
395	PL_statcache = *(req->statdata);
396	}
397
398	req_invoke (req);
399
400	count++;
401	}
402
403	req_free (req);
404	}	715	}
405		716
406	return count;	717	return count;
407	}
408
409	static void *aio_proc(void *arg);
410
411	static void start_thread (void)
412	{
413	sigset_t fullsigset, oldsigset;
414	pthread_t tid;
415	pthread_attr_t attr;
416
417	pthread_attr_init (&attr);
418	pthread_attr_setstacksize (&attr, STACKSIZE);
419	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
420
421	sigfillset (&fullsigset);
422	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
423
424	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
425	started++;
426
427	sigprocmask (SIG_SETMASK, &oldsigset, 0);
428	}
429
430	static void req_send (aio_req req)
431	{
432	while (started < wanted && nreqs >= started)
433	start_thread ();
434
435	++nreqs;
436
437	pthread_mutex_lock (&reqlock);
438
439	req->next = 0;
440
441	if (reqe)
442	{
443	reqe->next = req;
444	reqe = req;
445	}
446	else
447	reqe = reqs = req;
448
449	pthread_cond_signal (&reqwait);
450	pthread_mutex_unlock (&reqlock);
451
452	if (nreqs > max_outstanding)
453	for (;;)
454	{
455	poll_cb ();
456
457	if (nreqs <= max_outstanding)
458	break;
459
460	poll_wait ();
461	}
462	}
463
464	static void end_thread (void)
465	{
466	aio_req req;
467	Newz (0, req, 1, aio_cb);
468	req->type = REQ_QUIT;
469
470	req_send (req);
471	}
472
473	static void min_parallel (int nthreads)
474	{
475	if (wanted < nthreads)
476	wanted = nthreads;
477	}
478
479	static void max_parallel (int nthreads)
480	{
481	int cur = started;
482
483	if (wanted > nthreads)
484	wanted = nthreads;
485
486	while (cur > wanted)
487	{
488	end_thread ();
489	cur--;
490	}
491
492	while (started > wanted)
493	{
494	poll_wait ();
495	poll_cb ();
496	}
497	}	718	}
498		719
499	static void create_pipe ()	720	static void create_pipe ()
500	{	721	{
501	if (pipe (respipe))	722	if (pipe (respipe))
…		…
525	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	746	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
526	{	747	{
527	ssize_t res;	748	ssize_t res;
528	off_t ooffset;	749	off_t ooffset;
529		750
530	pthread_mutex_lock (&preadwritelock);	751	LOCK (preadwritelock);
531	ooffset = lseek (fd, 0, SEEK_CUR);	752	ooffset = lseek (fd, 0, SEEK_CUR);
532	lseek (fd, offset, SEEK_SET);	753	lseek (fd, offset, SEEK_SET);
533	res = read (fd, buf, count);	754	res = read (fd, buf, count);
534	lseek (fd, ooffset, SEEK_SET);	755	lseek (fd, ooffset, SEEK_SET);
535	pthread_mutex_unlock (&preadwritelock);	756	UNLOCK (preadwritelock);
536		757
537	return res;	758	return res;
538	}	759	}
539		760
540	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	761	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
541	{	762	{
542	ssize_t res;	763	ssize_t res;
543	off_t ooffset;	764	off_t ooffset;
544		765
545	pthread_mutex_lock (&preadwritelock);	766	LOCK (preadwritelock);
546	ooffset = lseek (fd, 0, SEEK_CUR);	767	ooffset = lseek (fd, 0, SEEK_CUR);
547	lseek (fd, offset, SEEK_SET);	768	lseek (fd, offset, SEEK_SET);
548	res = write (fd, buf, count);	769	res = write (fd, buf, count);
549	lseek (fd, offset, SEEK_SET);	770	lseek (fd, offset, SEEK_SET);
550	pthread_mutex_unlock (&preadwritelock);	771	UNLOCK (preadwritelock);
551		772
552	return res;	773	return res;
553	}	774	}
554	#endif	775	#endif
555		776
556	#if !HAVE_FDATASYNC	777	#if !HAVE_FDATASYNC
557	# define fdatasync fsync	778	# define fdatasync fsync
558	#endif	779	#endif
559		780
560	#if !HAVE_READAHEAD	781	#if !HAVE_READAHEAD
561	# define readahead aio_readahead	782	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
562		783
563	static ssize_t readahead (int fd, off_t offset, size_t count)	784	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
564	{	785	{
565	char readahead_buf[4096];	786	dBUF;
566		787
567	while (count > 0)	788	while (count > 0)
568	{	789	{
569	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	790	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
570		791
571	pread (fd, readahead_buf, len, offset);	792	pread (fd, aio_buf, len, offset);
572	offset += len;	793	offset += len;
573	count -= len;	794	count -= len;
574	}	795	}
575		796
576	errno = 0;	797	errno = 0;
577	}	798	}
		799
578	#endif	800	#endif
579		801
580	#if !HAVE_READDIR_R	802	#if !HAVE_READDIR_R
581	# define readdir_r aio_readdir_r	803	# define readdir_r aio_readdir_r
582		804
…		…
585	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	807	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
586	{	808	{
587	struct dirent *e;	809	struct dirent *e;
588	int errorno;	810	int errorno;
589		811
590	pthread_mutex_lock (&readdirlock);	812	LOCK (readdirlock);
591		813
592	e = readdir (dirp);	814	e = readdir (dirp);
593	errorno = errno;	815	errorno = errno;
594		816
595	if (e)	817	if (e)
…		…
598	strcpy (ent->d_name, e->d_name);	820	strcpy (ent->d_name, e->d_name);
599	}	821	}
600	else	822	else
601	*res = 0;	823	*res = 0;
602		824
603	pthread_mutex_unlock (&readdirlock);	825	UNLOCK (readdirlock);
604		826
605	errno = errorno;	827	errno = errorno;
606	return e ? 0 : -1;	828	return e ? 0 : -1;
607	}	829	}
608	#endif	830	#endif
609		831
610	/* sendfile always needs emulation */	832	/* sendfile always needs emulation */
611	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	833	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
612	{	834	{
613	ssize_t res;	835	ssize_t res;
614		836
615	if (!count)	837	if (!count)
616	return 0;	838	return 0;
…		…
627	{	849	{
628	off_t sbytes;	850	off_t sbytes;
629	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	851	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
630		852
631	if (res < 0 && sbytes)	853	if (res < 0 && sbytes)
632	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	854	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
633	res = sbytes;	855	res = sbytes;
634	}	856	}
635		857
636	# elif __hpux	858	# elif __hpux
637	res = sendfile (ofd, ifd, offset, count, 0, 0);	859	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
665	#endif	887	#endif
666	)	888	)
667	)	889	)
668	{	890	{
669	/* emulate sendfile. this is a major pain in the ass */	891	/* emulate sendfile. this is a major pain in the ass */
670	char buf[4096];	892	dBUF;
		893
671	res = 0;	894	res = 0;
672		895
673	while (count)	896	while (count)
674	{	897	{
675	ssize_t cnt;	898	ssize_t cnt;
676		899
677	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	900	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
678		901
679	if (cnt <= 0)	902	if (cnt <= 0)
680	{	903	{
681	if (cnt && !res) res = -1;	904	if (cnt && !res) res = -1;
682	break;	905	break;
683	}	906	}
684		907
685	cnt = write (ofd, buf, cnt);	908	cnt = write (ofd, aio_buf, cnt);
686		909
687	if (cnt <= 0)	910	if (cnt <= 0)
688	{	911	{
689	if (cnt && !res) res = -1;	912	if (cnt && !res) res = -1;
690	break;	913	break;
…		…
698		921
699	return res;	922	return res;
700	}	923	}
701		924
702	/* read a full directory */	925	/* read a full directory */
703	static int scandir_ (const char *path, void **namesp)	926	static void scandir_ (aio_req req, worker *self)
704	{	927	{
705	DIR *dirp = opendir (path);	928	DIR *dirp;
706	union	929	union
707	{	930	{
708	struct dirent d;	931	struct dirent d;
709	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	932	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
710	} u;	933	} *u;
711	struct dirent *entp;	934	struct dirent *entp;
712	char *name, *names;	935	char *name, *names;
713	int memlen = 4096;	936	int memlen = 4096;
714	int memofs = 0;	937	int memofs = 0;
715	int res = 0;	938	int res = 0;
716	int errorno;	939	int errorno;
717		940
718	if (!dirp)	941	LOCK (wrklock);
719	return -1;	942	self->dirp = dirp = opendir (req->dataptr);
720		943	self->dbuf = u = malloc (sizeof (*u));
721	names = malloc (memlen);	944	req->data2ptr = names = malloc (memlen);
		945	UNLOCK (wrklock);
		946
		947	if (dirp && u && names)
		948	for (;;)
		949	{
		950	errno = 0;
		951	readdir_r (dirp, &u->d, &entp);
		952
		953	if (!entp)
		954	break;
		955
		956	name = entp->d_name;
		957
		958	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		959	{
		960	int len = strlen (name) + 1;
		961
		962	res++;
		963
		964	while (memofs + len > memlen)
		965	{
		966	memlen *= 2;
		967	LOCK (wrklock);
		968	req->data2ptr = names = realloc (names, memlen);
		969	UNLOCK (wrklock);
		970
		971	if (!names)
		972	break;
		973	}
		974
		975	memcpy (names + memofs, name, len);
		976	memofs += len;
		977	}
		978	}
		979
		980	if (errno)
		981	res = -1;
		982
		983	req->result = res;
		984	}
		985
		986	/*****************************************************************************/
		987
		988	static void *aio_proc (void *thr_arg)
		989	{
		990	aio_req req;
		991	struct timespec ts;
		992	worker *self = (worker *)thr_arg;
		993
		994	/* try to distribute timeouts somewhat evenly */
		995	ts.tv_nsec = (((unsigned long)self + (unsigned long)ts.tv_sec) & 1023UL)
		996	* (1000000000UL / 1024UL);
722		997
723	for (;;)	998	for (;;)
724	{	999	{
725	errno = 0, readdir_r (dirp, &u.d, &entp);	1000	ts.tv_sec = time (0) + IDLE_TIMEOUT;
726		1001
727	if (!entp)	1002	LOCK (reqlock);
728	break;
729
730	name = entp->d_name;
731
732	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
733	{
734	int len = strlen (name) + 1;
735
736	res++;
737
738	while (memofs + len > memlen)
739	{
740	memlen *= 2;
741	names = realloc (names, memlen);
742	if (!names)
743	break;
744	}
745
746	memcpy (names + memofs, name, len);
747	memofs += len;
748	}
749	}
750
751	errorno = errno;
752	closedir (dirp);
753
754	if (errorno)
755	{
756	free (names);
757	errno = errorno;
758	res = -1;
759	}
760
761	*namesp = (void *)names;
762	return res;
763	}
764
765	/*****************************************************************************/
766
767	static void *aio_proc (void *thr_arg)
768	{
769	aio_req req;
770	int type;
771
772	do
773	{
774	pthread_mutex_lock (&reqlock);
775		1003
776	for (;;)	1004	for (;;)
777	{	1005	{
778	req = reqs;	1006	self->req = req = reqq_shift (&req_queue);
779
780	if (reqs)
781	{
782	reqs = reqs->next;
783	if (!reqs) reqe = 0;
784	}
785		1007
786	if (req)	1008	if (req)
787	break;	1009	break;
788		1010
		1011	++idle;
		1012
		1013	if (pthread_cond_timedwait (&reqwait, &reqlock, &ts)
		1014	== ETIMEDOUT)
		1015	{
		1016	if (idle > max_idle)
		1017	{
		1018	--idle;
		1019	UNLOCK (reqlock);
		1020	LOCK (wrklock);
		1021	--started;
		1022	UNLOCK (wrklock);
		1023	goto quit;
		1024	}
		1025
		1026	/* we are allowed to idle, so do so without any timeout */
789	pthread_cond_wait (&reqwait, &reqlock);	1027	pthread_cond_wait (&reqwait, &reqlock);
		1028	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1029	}
		1030
		1031	--idle;
790	}	1032	}
791		1033
792	pthread_mutex_unlock (&reqlock);	1034	--nready;
		1035
		1036	UNLOCK (reqlock);
793		1037
794	errno = 0; /* strictly unnecessary */	1038	errno = 0; /* strictly unnecessary */
795		1039
796	if (!(req->flags & FLAG_CANCELLED))	1040	if (!(req->flags & FLAG_CANCELLED))
797	switch (type = req->type) /* remember type for QUIT check */	1041	switch (req->type)
798	{	1042	{
799	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1043	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
800	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1044	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
801		1045
802	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1046	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
803	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1047	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
804		1048
805	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1049	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
806	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1050	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
807	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1051	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
808		1052
…		…
811	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1055	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
812	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1056	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
813	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1057	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
814	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1058	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
815	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1059	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
		1060	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
816		1061
817	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1062	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
818	case REQ_FSYNC: req->result = fsync (req->fd); break;	1063	case REQ_FSYNC: req->result = fsync (req->fd); break;
819	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1064	case REQ_READDIR: scandir_ (req, self); break;
820		1065
821	case REQ_SLEEP:	1066	case REQ_BUSY:
822	{	1067	{
823	struct timeval tv;	1068	struct timeval tv;
824		1069
825	tv.tv_sec = req->fd;	1070	tv.tv_sec = req->fd;
826	tv.tv_usec = req->fd2;	1071	tv.tv_usec = req->fd2;
…		…
828	req->result = select (0, 0, 0, 0, &tv);	1073	req->result = select (0, 0, 0, 0, &tv);
829	}	1074	}
830		1075
831	case REQ_GROUP:	1076	case REQ_GROUP:
832	case REQ_NOP:	1077	case REQ_NOP:
		1078	break;
		1079
833	case REQ_QUIT:	1080	case REQ_QUIT:
834	break;	1081	goto quit;
835		1082
836	default:	1083	default:
837	req->result = ENOSYS;	1084	req->result = ENOSYS;
838	break;	1085	break;
839	}	1086	}
840		1087
841	req->errorno = errno;	1088	req->errorno = errno;
842		1089
843	pthread_mutex_lock (&reslock);	1090	LOCK (reslock);
844		1091
845	req->next = 0;	1092	++npending;
846		1093
847	if (rese)	1094	if (!reqq_push (&res_queue, req))
848	{
849	rese->next = req;
850	rese = req;
851	}
852	else
853	{
854	rese = ress = req;
855
856	/* write a dummy byte to the pipe so fh becomes ready */	1095	/* write a dummy byte to the pipe so fh becomes ready */
857	write (respipe [1], &respipe, 1);	1096	write (respipe [1], &respipe, 1);
858	}
859		1097
860	pthread_mutex_unlock (&reslock);	1098	self->req = 0;
		1099	worker_clear (self);
		1100
		1101	UNLOCK (reslock);
861	}	1102	}
862	while (type != REQ_QUIT);	1103
		1104	quit:
		1105	LOCK (wrklock);
		1106	worker_free (self);
		1107	UNLOCK (wrklock);
863		1108
864	return 0;	1109	return 0;
865	}	1110	}
866		1111
867	/*****************************************************************************/	1112	/*****************************************************************************/
868		1113
869	static void atfork_prepare (void)	1114	static void atfork_prepare (void)
870	{	1115	{
871	pthread_mutex_lock (&reqlock);	1116	LOCK (wrklock);
872	pthread_mutex_lock (&reslock);	1117	LOCK (reqlock);
		1118	LOCK (reslock);
873	#if !HAVE_PREADWRITE	1119	#if !HAVE_PREADWRITE
874	pthread_mutex_lock (&preadwritelock);	1120	LOCK (preadwritelock);
875	#endif	1121	#endif
876	#if !HAVE_READDIR_R	1122	#if !HAVE_READDIR_R
877	pthread_mutex_lock (&readdirlock);	1123	LOCK (readdirlock);
878	#endif	1124	#endif
879	}	1125	}
880		1126
881	static void atfork_parent (void)	1127	static void atfork_parent (void)
882	{	1128	{
883	#if !HAVE_READDIR_R	1129	#if !HAVE_READDIR_R
884	pthread_mutex_unlock (&readdirlock);	1130	UNLOCK (readdirlock);
885	#endif	1131	#endif
886	#if !HAVE_PREADWRITE	1132	#if !HAVE_PREADWRITE
887	pthread_mutex_unlock (&preadwritelock);	1133	UNLOCK (preadwritelock);
888	#endif	1134	#endif
889	pthread_mutex_unlock (&reslock);	1135	UNLOCK (reslock);
890	pthread_mutex_unlock (&reqlock);	1136	UNLOCK (reqlock);
		1137	UNLOCK (wrklock);
891	}	1138	}
892		1139
893	static void atfork_child (void)	1140	static void atfork_child (void)
894	{	1141	{
895	aio_req prv;	1142	aio_req prv;
896		1143
		1144	while (prv = reqq_shift (&req_queue))
		1145	req_free (prv);
		1146
		1147	while (prv = reqq_shift (&res_queue))
		1148	req_free (prv);
		1149
		1150	while (wrk_first.next != &wrk_first)
		1151	{
		1152	worker *wrk = wrk_first.next;
		1153
		1154	if (wrk->req)
		1155	req_free (wrk->req);
		1156
		1157	worker_clear (wrk);
		1158	worker_free (wrk);
		1159	}
		1160
897	started = 0;	1161	started = 0;
898		1162	idle = 0;
899	while (reqs)	1163	nreqs = 0;
900	{	1164	nready = 0;
901	prv = reqs;	1165	npending = 0;
902	reqs = prv->next;
903	req_free (prv);
904	}
905
906	reqs = reqe = 0;
907
908	while (ress)
909	{
910	prv = ress;
911	ress = prv->next;
912	req_free (prv);
913	}
914
915	ress = rese = 0;
916		1166
917	close (respipe [0]);	1167	close (respipe [0]);
918	close (respipe [1]);	1168	close (respipe [1]);
919	create_pipe ();	1169	create_pipe ();
920		1170
921	atfork_parent ();	1171	atfork_parent ();
922	}	1172	}
923		1173
924	#define dREQ \	1174	#define dREQ \
925	aio_req req; \	1175	aio_req req; \
		1176	int req_pri = next_pri; \
		1177	next_pri = DEFAULT_PRI + PRI_BIAS; \
926	\	1178	\
927	if (SvOK (callback) && !SvROK (callback)) \	1179	if (SvOK (callback) && !SvROK (callback)) \
928	croak ("callback must be undef or of reference type"); \	1180	croak ("callback must be undef or of reference type"); \
929	\	1181	\
930	Newz (0, req, 1, aio_cb); \	1182	Newz (0, req, 1, aio_cb); \
931	if (!req) \	1183	if (!req) \
932	croak ("out of memory during aio_req allocation"); \	1184	croak ("out of memory during aio_req allocation"); \
933	\	1185	\
934	req->callback = newSVsv (callback)	1186	req->callback = newSVsv (callback); \
		1187	req->pri = req_pri
935		1188
936	#define REQ_SEND \	1189	#define REQ_SEND \
937	req_send (req); \	1190	req_send (req); \
938	\	1191	\
939	if (GIMME_V != G_VOID) \	1192	if (GIMME_V != G_VOID) \
…		…
944	PROTOTYPES: ENABLE	1197	PROTOTYPES: ENABLE
945		1198
946	BOOT:	1199	BOOT:
947	{	1200	{
948	HV *stash = gv_stashpv ("IO::AIO", 1);	1201	HV *stash = gv_stashpv ("IO::AIO", 1);
		1202
949	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1203	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
950	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1204	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
951	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1205	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1206	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1207	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1208	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
952		1209
953	create_pipe ();	1210	create_pipe ();
954	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1211	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
955	}	1212	}
956		1213
957	void	1214	void
958	min_parallel (nthreads)	1215	min_parallel (int nthreads)
959	int nthreads
960	PROTOTYPE: $	1216	PROTOTYPE: $
961		1217
962	void	1218	void
963	max_parallel (nthreads)	1219	max_parallel (int nthreads)
964	int nthreads
965	PROTOTYPE: $	1220	PROTOTYPE: $
966		1221
967	int	1222	int
968	max_outstanding (nreqs)	1223	max_outstanding (int maxreqs)
969	int nreqs	1224	PROTOTYPE: $
970	PROTOTYPE: $
971	CODE:	1225	CODE:
972	RETVAL = max_outstanding;	1226	RETVAL = max_outstanding;
973	max_outstanding = nreqs;	1227	max_outstanding = maxreqs;
		1228	OUTPUT:
		1229	RETVAL
974		1230
975	void	1231	void
976	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1232	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
977	SV * pathname	1233	SV * pathname
978	int flags	1234	int flags
…		…
1193		1449
1194	REQ_SEND;	1450	REQ_SEND;
1195	}	1451	}
1196		1452
1197	void	1453	void
		1454	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1455	SV * pathname
		1456	SV * callback
		1457	UV mode
		1458	UV dev
		1459	PPCODE:
		1460	{
		1461	dREQ;
		1462
		1463	req->type = REQ_MKNOD;
		1464	req->data = newSVsv (pathname);
		1465	req->dataptr = SvPVbyte_nolen (req->data);
		1466	req->mode = (mode_t)mode;
		1467	req->offset = dev;
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
1198	aio_sleep (delay,callback=&PL_sv_undef)	1473	aio_busy (delay,callback=&PL_sv_undef)
1199	double delay	1474	double delay
1200	SV * callback	1475	SV * callback
1201	PPCODE:	1476	PPCODE:
1202	{	1477	{
1203	dREQ;	1478	dREQ;
1204		1479
1205	req->type = REQ_SLEEP;	1480	req->type = REQ_BUSY;
1206	req->fd = delay < 0. ? 0 : delay;	1481	req->fd = delay < 0. ? 0 : delay;
1207	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1482	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1208		1483
1209	REQ_SEND;	1484	REQ_SEND;
1210	}	1485	}
…		…
1214	SV * callback	1489	SV * callback
1215	PROTOTYPE: ;$	1490	PROTOTYPE: ;$
1216	PPCODE:	1491	PPCODE:
1217	{	1492	{
1218	dREQ;	1493	dREQ;
		1494
1219	req->type = REQ_GROUP;	1495	req->type = REQ_GROUP;
1220	req_send (req);	1496	req_send (req);
		1497
1221	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1498	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1222	}	1499	}
1223		1500
1224	void	1501	void
1225	aio_nop (callback=&PL_sv_undef)	1502	aio_nop (callback=&PL_sv_undef)
…		…
1230		1507
1231	req->type = REQ_NOP;	1508	req->type = REQ_NOP;
1232		1509
1233	REQ_SEND;	1510	REQ_SEND;
1234	}	1511	}
		1512
		1513	int
		1514	aioreq_pri (int pri = 0)
		1515	PROTOTYPE: ;$
		1516	CODE:
		1517	RETVAL = next_pri - PRI_BIAS;
		1518	if (items > 0)
		1519	{
		1520	if (pri < PRI_MIN) pri = PRI_MIN;
		1521	if (pri > PRI_MAX) pri = PRI_MAX;
		1522	next_pri = pri + PRI_BIAS;
		1523	}
		1524	OUTPUT:
		1525	RETVAL
		1526
		1527	void
		1528	aioreq_nice (int nice = 0)
		1529	CODE:
		1530	nice = next_pri - nice;
		1531	if (nice < PRI_MIN) nice = PRI_MIN;
		1532	if (nice > PRI_MAX) nice = PRI_MAX;
		1533	next_pri = nice + PRI_BIAS;
1235		1534
1236	void	1535	void
1237	flush ()	1536	flush ()
1238	PROTOTYPE:	1537	PROTOTYPE:
1239	CODE:	1538	CODE:
1240	while (nreqs)	1539	while (nreqs)
1241	{	1540	{
1242	poll_wait ();	1541	poll_wait ();
1243	poll_cb ();	1542	poll_cb (0);
1244	}	1543	}
1245		1544
1246	void	1545	void
1247	poll()	1546	poll()
1248	PROTOTYPE:	1547	PROTOTYPE:
1249	CODE:	1548	CODE:
1250	if (nreqs)	1549	if (nreqs)
1251	{	1550	{
1252	poll_wait ();	1551	poll_wait ();
1253	poll_cb ();	1552	poll_cb (0);
1254	}	1553	}
1255		1554
1256	int	1555	int
1257	poll_fileno()	1556	poll_fileno()
1258	PROTOTYPE:	1557	PROTOTYPE:
…		…
1263		1562
1264	int	1563	int
1265	poll_cb(...)	1564	poll_cb(...)
1266	PROTOTYPE:	1565	PROTOTYPE:
1267	CODE:	1566	CODE:
1268	RETVAL = poll_cb ();	1567	RETVAL = poll_cb (0);
		1568	OUTPUT:
		1569	RETVAL
		1570
		1571	int
		1572	poll_some(int max = 0)
		1573	PROTOTYPE: $
		1574	CODE:
		1575	RETVAL = poll_cb (max);
1269	OUTPUT:	1576	OUTPUT:
1270	RETVAL	1577	RETVAL
1271		1578
1272	void	1579	void
1273	poll_wait()	1580	poll_wait()
…		…
1282	CODE:	1589	CODE:
1283	RETVAL = nreqs;	1590	RETVAL = nreqs;
1284	OUTPUT:	1591	OUTPUT:
1285	RETVAL	1592	RETVAL
1286		1593
		1594	int
		1595	nready()
		1596	PROTOTYPE:
		1597	CODE:
		1598	RETVAL = get_nready ();
		1599	OUTPUT:
		1600	RETVAL
		1601
		1602	int
		1603	npending()
		1604	PROTOTYPE:
		1605	CODE:
		1606	RETVAL = get_npending ();
		1607	OUTPUT:
		1608	RETVAL
		1609
1287	PROTOTYPES: DISABLE	1610	PROTOTYPES: DISABLE
1288		1611
1289	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1612	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1290		1613
1291	void	1614	void
1292	cancel (aio_req_ornot req)	1615	cancel (aio_req_ornot req)
1293	PROTOTYPE:
1294	CODE:	1616	CODE:
1295	req_cancel (req);	1617	req_cancel (req);
1296		1618
1297	void	1619	void
1298	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1620	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1334	}	1656	}
1335	}	1657	}
1336	}	1658	}
1337		1659
1338	void	1660	void
		1661	cancel_subs (aio_req_ornot req)
		1662	CODE:
		1663	req_cancel_subs (req);
		1664
		1665	void
1339	result (aio_req grp, ...)	1666	result (aio_req grp, ...)
1340	CODE:	1667	CODE:
1341	{	1668	{
1342	int i;	1669	int i;
		1670	AV *av;
		1671
		1672	grp->errorno = errno;
		1673
1343	AV *av = newAV ();	1674	av = newAV ();
1344		1675
1345	for (i = 1; i < items; ++i )	1676	for (i = 1; i < items; ++i )
1346	av_push (av, newSVsv (ST (i)));	1677	av_push (av, newSVsv (ST (i)));
1347		1678
1348	SvREFCNT_dec (grp->data);	1679	SvREFCNT_dec (grp->data);
1349	grp->data = (SV *)av;	1680	grp->data = (SV *)av;
1350	}	1681	}
1351		1682
1352	void	1683	void
		1684	errno (aio_req grp, int errorno = errno)
		1685	CODE:
		1686	grp->errorno = errorno;
		1687
		1688	void
1353	feed_limit (aio_req grp, int limit)	1689	limit (aio_req grp, int limit)
1354	CODE:	1690	CODE:
1355	grp->fd2 = limit;	1691	grp->fd2 = limit;
1356	aio_grp_feed (grp);	1692	aio_grp_feed (grp);
1357		1693
1358	void	1694	void

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