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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.63 by root, Mon Oct 23 23:48:31 2006 UTC vs.
Revision 1.82 by root, Fri Oct 27 20:11:58 2006 UTC

1	#if __linux	1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux && !defined(_GNU_SOURCE)
2	# define _GNU_SOURCE	5	# define _GNU_SOURCE
3	#endif	6	#endif
4		7
		8	/* just in case */
5	#define _REENTRANT 1	9	#define _REENTRANT 1
6		10
7	#include <errno.h>	11	#include <errno.h>
8		12
9	#include "EXTERN.h"	13	#include "EXTERN.h"
…		…
44	/* used for struct dirent, AIX doesn't provide it */	48	/* used for struct dirent, AIX doesn't provide it */
45	#ifndef NAME_MAX	49	#ifndef NAME_MAX
46	# define NAME_MAX 4096	50	# define NAME_MAX 4096
47	#endif	51	#endif
48		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
49	#if __ia64	58	#if __ia64
50	# define STACKSIZE 65536	59	# define STACKSIZE 65536
		60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		61	# define STACKSIZE PTHREAD_STACK_MIN
51	#else	62	#else
52	# define STACKSIZE 8192	63	# define STACKSIZE 16384
		64	#endif
		65
		66	/* wether word reads are potentially non-atomic.
		67	* this is conservatice, likely most arches this runs
		68	* on have atomic word read/writes.
		69	*/
		70	#ifndef WORDREAD_UNSAFE
		71	# if __i386 || __x86_64
		72	# define WORDREAD_UNSAFE 0
		73	# else
		74	# define WORDREAD_UNSAFE 1
53	#endif	75	# endif
		76	#endif
		77
		78	/* buffer size for various temporary buffers */
		79	#define AIO_BUFSIZE 65536
		80
		81	#define dBUF \
		82	char *aio_buf; \
		83	LOCK (wrklock); \
		84	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		85	UNLOCK (wrklock); \
		86	if (!aio_buf) \
		87	return -1;
54		88
55	enum {	89	enum {
56	REQ_QUIT,	90	REQ_QUIT,
57	REQ_OPEN, REQ_CLOSE,	91	REQ_OPEN, REQ_CLOSE,
58	REQ_READ, REQ_WRITE, REQ_READAHEAD,	92	REQ_READ, REQ_WRITE, REQ_READAHEAD,
59	REQ_SENDFILE,	93	REQ_SENDFILE,
60	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	94	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
61	REQ_FSYNC, REQ_FDATASYNC,	95	REQ_FSYNC, REQ_FDATASYNC,
62	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	96	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
63	REQ_READDIR,	97	REQ_MKNOD, REQ_READDIR,
64	REQ_LINK, REQ_SYMLINK,	98	REQ_LINK, REQ_SYMLINK,
65	REQ_GROUP, REQ_NOP,	99	REQ_GROUP, REQ_NOP,
66	REQ_SLEEP,	100	REQ_BUSY,
67	};	101	};
68		102
69	#define AIO_REQ_KLASS "IO::AIO::REQ"	103	#define AIO_REQ_KLASS "IO::AIO::REQ"
70	#define AIO_GRP_KLASS "IO::AIO::GRP"	104	#define AIO_GRP_KLASS "IO::AIO::GRP"
71		105
…		…
105	PRI_MIN = -4,	139	PRI_MIN = -4,
106	PRI_MAX = 4,	140	PRI_MAX = 4,
107		141
108	DEFAULT_PRI = 0,	142	DEFAULT_PRI = 0,
109	PRI_BIAS = -PRI_MIN,	143	PRI_BIAS = -PRI_MIN,
		144	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
110	};	145	};
111		146
112	static int next_pri = DEFAULT_PRI + PRI_BIAS;	147	static int next_pri = DEFAULT_PRI + PRI_BIAS;
113		148
114	static int started, wanted;	149	static unsigned int started, wanted;
115	static volatile int nreqs;
116	static int max_outstanding = 1<<30;
117	static int respipe [2];
118		150
119	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)	151	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
120	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP	152	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
121	#else	153	#else
122	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER	154	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
123	#endif	155	#endif
124		156
		157	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		158	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		159
		160	/* worker threads management */
		161	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		162
		163	typedef struct worker {
		164	/* locked by wrklock */
		165	struct worker *prev, *next;
		166
		167	pthread_t tid;
		168
		169	/* locked by reslock, reqlock or wrklock */
		170	aio_req req; /* currently processed request */
		171	void *dbuf;
		172	DIR *dirp;
		173	} worker;
		174
		175	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		176
		177	static void worker_clear (worker *wrk)
		178	{
		179	if (wrk->dirp)
		180	{
		181	closedir (wrk->dirp);
		182	wrk->dirp = 0;
		183	}
		184
		185	if (wrk->dbuf)
		186	{
		187	free (wrk->dbuf);
		188	wrk->dbuf = 0;
		189	}
		190	}
		191
		192	static void worker_free (worker *wrk)
		193	{
		194	wrk->next->prev = wrk->prev;
		195	wrk->prev->next = wrk->next;
		196
		197	free (wrk);
		198	}
		199
		200	static volatile unsigned int nreqs, nready, npending;
		201	static volatile unsigned int max_outstanding = 0xffffffff;
		202	static int respipe [2];
		203
125	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	204	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
126	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	205	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
127	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	206	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
128		207
129	static volatile aio_req reqs, reqe; /* queue start, queue end */	208	#if WORDREAD_UNSAFE
130	static volatile aio_req ress, rese; /* queue start, queue end */
131		209
		210	static unsigned int get_nready ()
		211	{
		212	unsigned int retval;
		213
		214	LOCK (reqlock);
		215	retval = nready;
		216	UNLOCK (reqlock);
		217
		218	return retval;
		219	}
		220
		221	static unsigned int get_npending ()
		222	{
		223	unsigned int retval;
		224
		225	LOCK (reslock);
		226	retval = npending;
		227	UNLOCK (reslock);
		228
		229	return retval;
		230	}
		231
		232	#else
		233
		234	# define get_nready() nready
		235	# define get_npending() npending
		236
		237	#endif
		238
		239	/*
		240	* a somewhat faster data structure might be nice, but
		241	* with 8 priorities this actually needs <20 insns
		242	* per shift, the most expensive operation.
		243	*/
		244	typedef struct {
		245	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		246	int size;
		247	} reqq;
		248
		249	static reqq req_queue;
		250	static reqq res_queue;
		251
		252	int reqq_push (reqq *q, aio_req req)
		253	{
		254	int pri = req->pri;
		255	req->next = 0;
		256
		257	if (q->qe[pri])
		258	{
		259	q->qe[pri]->next = req;
		260	q->qe[pri] = req;
		261	}
		262	else
		263	q->qe[pri] = q->qs[pri] = req;
		264
		265	return q->size++;
		266	}
		267
		268	aio_req reqq_shift (reqq *q)
		269	{
		270	int pri;
		271
		272	if (!q->size)
		273	return 0;
		274
		275	--q->size;
		276
		277	for (pri = NUM_PRI; pri--; )
		278	{
		279	aio_req req = q->qs[pri];
		280
		281	if (req)
		282	{
		283	if (!(q->qs[pri] = req->next))
		284	q->qe[pri] = 0;
		285
		286	return req;
		287	}
		288	}
		289
		290	abort ();
		291	}
		292
		293	static int poll_cb (int max);
132	static void req_invoke (aio_req req);	294	static void req_invoke (aio_req req);
133	static void req_free (aio_req req);	295	static void req_free (aio_req req);
		296	static void req_cancel (aio_req req);
134		297
135	/* must be called at most once */	298	/* must be called at most once */
136	static SV *req_sv (aio_req req, const char *klass)	299	static SV *req_sv (aio_req req, const char *klass)
137	{	300	{
138	if (!req->self)	301	if (!req->self)
…		…
169	ENTER;	332	ENTER;
170	SAVETMPS;	333	SAVETMPS;
171	PUSHMARK (SP);	334	PUSHMARK (SP);
172	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	335	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
173	PUTBACK;	336	PUTBACK;
174	call_sv (grp->fh2, G_VOID | G_EVAL);	337	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
175	SPAGAIN;	338	SPAGAIN;
176	FREETMPS;	339	FREETMPS;
177	LEAVE;	340	LEAVE;
178	}	341	}
179		342
…		…
200	req_invoke (grp);	363	req_invoke (grp);
201	req_free (grp);	364	req_free (grp);
202	}	365	}
203	}	366	}
204		367
205	static void poll_wait ()
206	{
207	fd_set rfd;
208
209	while (nreqs)
210	{
211	aio_req req;
212	pthread_mutex_lock (&reslock);
213	req = ress;
214	pthread_mutex_unlock (&reslock);
215
216	if (req)
217	return;
218
219	FD_ZERO(&rfd);
220	FD_SET(respipe [0], &rfd);
221
222	select (respipe [0] + 1, &rfd, 0, 0, 0);
223	}
224	}
225
226	static void req_invoke (aio_req req)	368	static void req_invoke (aio_req req)
227	{	369	{
228	dSP;	370	dSP;
229	int errorno = errno;
230		371
231	if (req->flags & FLAG_CANCELLED || !SvOK (req->callback))	372	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
232	return;	373	{
233
234	errno = req->errorno;
235
236	ENTER;	374	ENTER;
237	SAVETMPS;	375	SAVETMPS;
238	PUSHMARK (SP);	376	PUSHMARK (SP);
239	EXTEND (SP, 1);	377	EXTEND (SP, 1);
240		378
241	switch (req->type)	379	switch (req->type)
242	{
243	case REQ_READDIR:
244	{	380	{
245	SV *rv = &PL_sv_undef;	381	case REQ_READDIR:
246
247	if (req->result >= 0)
248	{	382	{
249	char *buf = req->data2ptr;	383	SV *rv = &PL_sv_undef;
250	AV *av = newAV ();
251		384
252	while (req->result)	385	if (req->result >= 0)
253	{	386	{
		387	int i;
		388	char *buf = req->data2ptr;
		389	AV *av = newAV ();
		390
		391	av_extend (av, req->result - 1);
		392
		393	for (i = 0; i < req->result; ++i)
		394	{
254	SV *sv = newSVpv (buf, 0);	395	SV *sv = newSVpv (buf, 0);
255		396
256	av_push (av, sv);	397	av_store (av, i, sv);
257	buf += SvCUR (sv) + 1;	398	buf += SvCUR (sv) + 1;
258	req->result--;	399	}
		400
		401	rv = sv_2mortal (newRV_noinc ((SV *)av));
259	}	402	}
260		403
261	rv = sv_2mortal (newRV_noinc ((SV *)av));	404	PUSHs (rv);
262	}	405	}
		406	break;
263		407
264	PUSHs (rv);	408	case REQ_OPEN:
		409	{
		410	/* convert fd to fh */
		411	SV *fh;
		412
		413	PUSHs (sv_2mortal (newSViv (req->result)));
		414	PUTBACK;
		415	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		416	SPAGAIN;
		417
		418	fh = SvREFCNT_inc (POPs);
		419
		420	PUSHMARK (SP);
		421	XPUSHs (sv_2mortal (fh));
		422	}
		423	break;
		424
		425	case REQ_GROUP:
		426	req->fd = 2; /* mark group as finished */
		427
		428	if (req->data)
		429	{
		430	int i;
		431	AV *av = (AV *)req->data;
		432
		433	EXTEND (SP, AvFILL (av) + 1);
		434	for (i = 0; i <= AvFILL (av); ++i)
		435	PUSHs (*av_fetch (av, i, 0));
		436	}
		437	break;
		438
		439	case REQ_NOP:
		440	case REQ_BUSY:
		441	break;
		442
		443	default:
		444	PUSHs (sv_2mortal (newSViv (req->result)));
		445	break;
265	}	446	}
266	break;
267		447
268	case REQ_OPEN:	448	errno = req->errorno;
269	{
270	/* convert fd to fh */
271	SV *fh;
272		449
273	PUSHs (sv_2mortal (newSViv (req->result)));
274	PUTBACK;	450	PUTBACK;
275	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
276	SPAGAIN;
277
278	fh = SvREFCNT_inc (POPs);
279
280	PUSHMARK (SP);
281	XPUSHs (sv_2mortal (fh));
282	}
283	break;
284
285	case REQ_GROUP:
286	req->fd = 2; /* mark group as finished */
287
288	if (req->data)
289	{
290	int i;
291	AV *av = (AV *)req->data;
292
293	EXTEND (SP, AvFILL (av) + 1);
294	for (i = 0; i <= AvFILL (av); ++i)
295	PUSHs (*av_fetch (av, i, 0));
296	}
297	break;
298
299	case REQ_NOP:
300	case REQ_SLEEP:
301	break;
302
303	default:
304	PUSHs (sv_2mortal (newSViv (req->result)));
305	break;
306	}
307
308
309	PUTBACK;
310	call_sv (req->callback, G_VOID | G_EVAL);	451	call_sv (req->callback, G_VOID | G_EVAL);
311	SPAGAIN;	452	SPAGAIN;
312		453
313	FREETMPS;	454	FREETMPS;
314	LEAVE;	455	LEAVE;
315
316	errno = errorno;
317
318	if (SvTRUE (ERRSV))
319	{	456	}
320	req_free (req);
321	croak (0);
322	}
323	}
324		457
325	static void req_free (aio_req req)
326	{
327	if (req->grp)	458	if (req->grp)
328	{	459	{
329	aio_req grp = req->grp;	460	aio_req grp = req->grp;
330		461
331	/* unlink request */	462	/* unlink request */
…		…
336	grp->grp_first = req->grp_next;	467	grp->grp_first = req->grp_next;
337		468
338	aio_grp_dec (grp);	469	aio_grp_dec (grp);
339	}	470	}
340		471
		472	if (SvTRUE (ERRSV))
		473	{
		474	req_free (req);
		475	croak (0);
		476	}
		477	}
		478
		479	static void req_free (aio_req req)
		480	{
341	if (req->self)	481	if (req->self)
342	{	482	{
343	sv_unmagic (req->self, PERL_MAGIC_ext);	483	sv_unmagic (req->self, PERL_MAGIC_ext);
344	SvREFCNT_dec (req->self);	484	SvREFCNT_dec (req->self);
345	}	485	}
…		…
348	SvREFCNT_dec (req->fh);	488	SvREFCNT_dec (req->fh);
349	SvREFCNT_dec (req->fh2);	489	SvREFCNT_dec (req->fh2);
350	SvREFCNT_dec (req->callback);	490	SvREFCNT_dec (req->callback);
351	Safefree (req->statdata);	491	Safefree (req->statdata);
352		492
353	if (req->type == REQ_READDIR && req->result >= 0)	493	if (req->type == REQ_READDIR)
354	free (req->data2ptr);	494	free (req->data2ptr);
355		495
356	Safefree (req);	496	Safefree (req);
357	}	497	}
358		498
		499	static void req_cancel_subs (aio_req grp)
		500	{
		501	aio_req sub;
		502
		503	if (grp->type != REQ_GROUP)
		504	return;
		505
		506	SvREFCNT_dec (grp->fh2);
		507	grp->fh2 = 0;
		508
		509	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		510	req_cancel (sub);
		511	}
		512
359	static void req_cancel (aio_req req)	513	static void req_cancel (aio_req req)
360	{	514	{
361	req->flags |= FLAG_CANCELLED;	515	req->flags |= FLAG_CANCELLED;
362		516
363	if (req->type == REQ_GROUP)	517	req_cancel_subs (req);
364	{	518	}
365	aio_req sub;
366		519
367	for (sub = req->grp_first; sub; sub = sub->grp_next)	520	static void *aio_proc(void *arg);
368	req_cancel (sub);	521
		522	static void start_thread (void)
		523	{
		524	sigset_t fullsigset, oldsigset;
		525	pthread_attr_t attr;
		526
		527	worker *wrk = calloc (1, sizeof (worker));
		528
		529	if (!wrk)
		530	croak ("unable to allocate worker thread data");
		531
		532	pthread_attr_init (&attr);
		533	pthread_attr_setstacksize (&attr, STACKSIZE);
		534	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
		535	#ifdef PTHREAD_SCOPE_PROCESS
		536	pthread_attr_setscope (&attr, PTHREAD_SCOPE_PROCESS);
		537	#endif
		538
		539	sigfillset (&fullsigset);
		540
		541	LOCK (wrklock);
		542	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
		543
		544	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
369	}	545	{
370	}	546	wrk->prev = &wrk_first;
		547	wrk->next = wrk_first.next;
		548	wrk_first.next->prev = wrk;
		549	wrk_first.next = wrk;
		550	++started;
		551	}
		552	else
		553	free (wrk);
371		554
		555	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		556	UNLOCK (wrklock);
		557	}
		558
		559	static void maybe_start_thread ()
		560	{
		561	#if 0
		562	static struct timeval last;
		563	struct timeval diff, now;
		564	#endif
		565
		566	if (started >= wanted)
		567	return;
		568
		569	if (nready <= nreqs - get_nready () - get_npending ())
		570	return;
		571
		572	#if 0
		573	gettimeofday (&now, 0);
		574
		575	diff.tv_sec = now.tv_sec - last.tv_sec;
		576	diff.tv_usec = now.tv_usec - last.tv_usec;
		577
		578	if (diff.tv_usec < 0)
		579	{
		580	--diff.tv_sec;
		581	diff.tv_usec += 1000000;
		582	}
		583
		584	if (!diff.tv_sec && diff.tv_usec < 10000)
		585	return;
		586
		587	last = now;
		588	#endif
		589
		590	start_thread ();
		591	}
		592
		593	static void req_send (aio_req req)
		594	{
		595	++nreqs;
		596
		597	LOCK (reqlock);
		598	++nready;
		599	reqq_push (&req_queue, req);
		600	pthread_cond_signal (&reqwait);
		601	UNLOCK (reqlock);
		602
		603	maybe_start_thread ();
		604	}
		605
		606	static void end_thread (void)
		607	{
		608	aio_req req;
		609
		610	Newz (0, req, 1, aio_cb);
		611
		612	req->type = REQ_QUIT;
		613	req->pri = PRI_MAX + PRI_BIAS;
		614
		615	req_send (req);
		616
		617	LOCK (wrklock);
		618	--started;
		619	UNLOCK (wrklock);
		620	}
		621
		622	static void min_parallel (int nthreads)
		623	{
		624	if (wanted < nthreads)
		625	wanted = nthreads;
		626	}
		627
		628	static void max_parallel (int nthreads)
		629	{
		630	if (wanted > nthreads)
		631	wanted = nthreads;
		632
		633	while (started > wanted)
		634	end_thread ();
		635	}
		636
		637	static void poll_wait ()
		638	{
		639	fd_set rfd;
		640
		641	while (nreqs)
		642	{
		643	int size;
		644	if (WORDREAD_UNSAFE) LOCK (reslock);
		645	size = res_queue.size;
		646	if (WORDREAD_UNSAFE) UNLOCK (reslock);
		647
		648	if (size)
		649	return;
		650
		651	maybe_start_thread ();
		652
		653	FD_ZERO(&rfd);
		654	FD_SET(respipe [0], &rfd);
		655
		656	select (respipe [0] + 1, &rfd, 0, 0, 0);
		657	}
		658	}
		659
372	static int poll_cb ()	660	static int poll_cb (int max)
373	{	661	{
374	dSP;	662	dSP;
375	int count = 0;	663	int count = 0;
376	int do_croak = 0;	664	int do_croak = 0;
377	aio_req req;	665	aio_req req;
378		666
379	for (;;)	667	for (;;)
380	{	668	{
381	pthread_mutex_lock (&reslock);	669	while (max <= 0 || count < max)
382	req = ress;
383
384	if (req)
385	{	670	{
386	ress = req->next;	671	maybe_start_thread ();
387		672
		673	LOCK (reslock);
		674	req = reqq_shift (&res_queue);
		675
388	if (!ress)	676	if (req)
389	{	677	{
		678	--npending;
		679
		680	if (!res_queue.size)
		681	{
390	/* read any signals sent by the worker threads */	682	/* read any signals sent by the worker threads */
391	char buf [32];	683	char buf [32];
392	while (read (respipe [0], buf, 32) == 32)	684	while (read (respipe [0], buf, 32) == 32)
		685	;
393	;	686	}
394
395	rese = 0;
396	}	687	}
		688
		689	UNLOCK (reslock);
		690
		691	if (!req)
		692	break;
		693
		694	--nreqs;
		695
		696	if (req->type == REQ_GROUP && req->length)
		697	{
		698	req->fd = 1; /* mark request as delayed */
		699	continue;
		700	}
		701	else
		702	{
		703	if (req->type == REQ_READ)
		704	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		705
		706	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		707	SvREADONLY_off (req->data);
		708
		709	if (req->statdata)
		710	{
		711	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		712	PL_laststatval = req->result;
		713	PL_statcache = *(req->statdata);
		714	}
		715
		716	req_invoke (req);
		717
		718	count++;
		719	}
		720
		721	req_free (req);
397	}	722	}
398		723
399	pthread_mutex_unlock (&reslock);	724	if (nreqs <= max_outstanding)
400
401	if (!req)
402	break;	725	break;
403		726
404	--nreqs;	727	poll_wait ();
405		728
406	if (req->type == REQ_QUIT)	729	max = 0;
407	started--;
408	else if (req->type == REQ_GROUP && req->length)
409	{
410	req->fd = 1; /* mark request as delayed */
411	continue;
412	}
413	else
414	{
415	if (req->type == REQ_READ)
416	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
417
418	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
419	SvREADONLY_off (req->data);
420
421	if (req->statdata)
422	{
423	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
424	PL_laststatval = req->result;
425	PL_statcache = *(req->statdata);
426	}
427
428	req_invoke (req);
429
430	count++;
431	}
432
433	req_free (req);
434	}	730	}
435		731
436	return count;	732	return count;
437	}
438
439	static void *aio_proc(void *arg);
440
441	static void start_thread (void)
442	{
443	sigset_t fullsigset, oldsigset;
444	pthread_t tid;
445	pthread_attr_t attr;
446
447	pthread_attr_init (&attr);
448	pthread_attr_setstacksize (&attr, STACKSIZE);
449	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
450
451	sigfillset (&fullsigset);
452	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
453
454	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
455	started++;
456
457	sigprocmask (SIG_SETMASK, &oldsigset, 0);
458	}
459
460	static void req_send (aio_req req)
461	{
462	while (started < wanted && nreqs >= started)
463	start_thread ();
464
465	++nreqs;
466
467	pthread_mutex_lock (&reqlock);
468
469	req->next = 0;
470
471	if (reqe)
472	{
473	reqe->next = req;
474	reqe = req;
475	}
476	else
477	reqe = reqs = req;
478
479	pthread_cond_signal (&reqwait);
480	pthread_mutex_unlock (&reqlock);
481
482	if (nreqs > max_outstanding)
483	for (;;)
484	{
485	poll_cb ();
486
487	if (nreqs <= max_outstanding)
488	break;
489
490	poll_wait ();
491	}
492	}
493
494	static void end_thread (void)
495	{
496	aio_req req;
497	Newz (0, req, 1, aio_cb);
498	req->type = REQ_QUIT;
499
500	req_send (req);
501	}
502
503	static void min_parallel (int nthreads)
504	{
505	if (wanted < nthreads)
506	wanted = nthreads;
507	}
508
509	static void max_parallel (int nthreads)
510	{
511	int cur = started;
512
513	if (wanted > nthreads)
514	wanted = nthreads;
515
516	while (cur > wanted)
517	{
518	end_thread ();
519	cur--;
520	}
521
522	while (started > wanted)
523	{
524	poll_wait ();
525	poll_cb ();
526	}
527	}	733	}
528		734
529	static void create_pipe ()	735	static void create_pipe ()
530	{	736	{
531	if (pipe (respipe))	737	if (pipe (respipe))
…		…
555	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	761	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
556	{	762	{
557	ssize_t res;	763	ssize_t res;
558	off_t ooffset;	764	off_t ooffset;
559		765
560	pthread_mutex_lock (&preadwritelock);	766	LOCK (preadwritelock);
561	ooffset = lseek (fd, 0, SEEK_CUR);	767	ooffset = lseek (fd, 0, SEEK_CUR);
562	lseek (fd, offset, SEEK_SET);	768	lseek (fd, offset, SEEK_SET);
563	res = read (fd, buf, count);	769	res = read (fd, buf, count);
564	lseek (fd, ooffset, SEEK_SET);	770	lseek (fd, ooffset, SEEK_SET);
565	pthread_mutex_unlock (&preadwritelock);	771	UNLOCK (preadwritelock);
566		772
567	return res;	773	return res;
568	}	774	}
569		775
570	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	776	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
571	{	777	{
572	ssize_t res;	778	ssize_t res;
573	off_t ooffset;	779	off_t ooffset;
574		780
575	pthread_mutex_lock (&preadwritelock);	781	LOCK (preadwritelock);
576	ooffset = lseek (fd, 0, SEEK_CUR);	782	ooffset = lseek (fd, 0, SEEK_CUR);
577	lseek (fd, offset, SEEK_SET);	783	lseek (fd, offset, SEEK_SET);
578	res = write (fd, buf, count);	784	res = write (fd, buf, count);
579	lseek (fd, offset, SEEK_SET);	785	lseek (fd, offset, SEEK_SET);
580	pthread_mutex_unlock (&preadwritelock);	786	UNLOCK (preadwritelock);
581		787
582	return res;	788	return res;
583	}	789	}
584	#endif	790	#endif
585		791
586	#if !HAVE_FDATASYNC	792	#if !HAVE_FDATASYNC
587	# define fdatasync fsync	793	# define fdatasync fsync
588	#endif	794	#endif
589		795
590	#if !HAVE_READAHEAD	796	#if !HAVE_READAHEAD
591	# define readahead aio_readahead	797	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
592		798
593	static ssize_t readahead (int fd, off_t offset, size_t count)	799	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
594	{	800	{
595	char readahead_buf[4096];	801	dBUF;
596		802
597	while (count > 0)	803	while (count > 0)
598	{	804	{
599	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	805	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
600		806
601	pread (fd, readahead_buf, len, offset);	807	pread (fd, aio_buf, len, offset);
602	offset += len;	808	offset += len;
603	count -= len;	809	count -= len;
604	}	810	}
605		811
606	errno = 0;	812	errno = 0;
607	}	813	}
		814
608	#endif	815	#endif
609		816
610	#if !HAVE_READDIR_R	817	#if !HAVE_READDIR_R
611	# define readdir_r aio_readdir_r	818	# define readdir_r aio_readdir_r
612		819
…		…
615	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	822	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
616	{	823	{
617	struct dirent *e;	824	struct dirent *e;
618	int errorno;	825	int errorno;
619		826
620	pthread_mutex_lock (&readdirlock);	827	LOCK (readdirlock);
621		828
622	e = readdir (dirp);	829	e = readdir (dirp);
623	errorno = errno;	830	errorno = errno;
624		831
625	if (e)	832	if (e)
…		…
628	strcpy (ent->d_name, e->d_name);	835	strcpy (ent->d_name, e->d_name);
629	}	836	}
630	else	837	else
631	*res = 0;	838	*res = 0;
632		839
633	pthread_mutex_unlock (&readdirlock);	840	UNLOCK (readdirlock);
634		841
635	errno = errorno;	842	errno = errorno;
636	return e ? 0 : -1;	843	return e ? 0 : -1;
637	}	844	}
638	#endif	845	#endif
639		846
640	/* sendfile always needs emulation */	847	/* sendfile always needs emulation */
641	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)	848	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
642	{	849	{
643	ssize_t res;	850	ssize_t res;
644		851
645	if (!count)	852	if (!count)
646	return 0;	853	return 0;
…		…
657	{	864	{
658	off_t sbytes;	865	off_t sbytes;
659	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	866	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
660		867
661	if (res < 0 && sbytes)	868	if (res < 0 && sbytes)
662	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	869	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
663	res = sbytes;	870	res = sbytes;
664	}	871	}
665		872
666	# elif __hpux	873	# elif __hpux
667	res = sendfile (ofd, ifd, offset, count, 0, 0);	874	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
695	#endif	902	#endif
696	)	903	)
697	)	904	)
698	{	905	{
699	/* emulate sendfile. this is a major pain in the ass */	906	/* emulate sendfile. this is a major pain in the ass */
700	char buf[4096];	907	dBUF;
		908
701	res = 0;	909	res = 0;
702		910
703	while (count)	911	while (count)
704	{	912	{
705	ssize_t cnt;	913	ssize_t cnt;
706		914
707	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	915	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
708		916
709	if (cnt <= 0)	917	if (cnt <= 0)
710	{	918	{
711	if (cnt && !res) res = -1;	919	if (cnt && !res) res = -1;
712	break;	920	break;
713	}	921	}
714		922
715	cnt = write (ofd, buf, cnt);	923	cnt = write (ofd, aio_buf, cnt);
716		924
717	if (cnt <= 0)	925	if (cnt <= 0)
718	{	926	{
719	if (cnt && !res) res = -1;	927	if (cnt && !res) res = -1;
720	break;	928	break;
…		…
728		936
729	return res;	937	return res;
730	}	938	}
731		939
732	/* read a full directory */	940	/* read a full directory */
733	static int scandir_ (const char *path, void **namesp)	941	static void scandir_ (aio_req req, worker *self)
734	{	942	{
735	DIR *dirp = opendir (path);	943	DIR *dirp;
736	union	944	union
737	{	945	{
738	struct dirent d;	946	struct dirent d;
739	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	947	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
740	} u;	948	} *u;
741	struct dirent *entp;	949	struct dirent *entp;
742	char *name, *names;	950	char *name, *names;
743	int memlen = 4096;	951	int memlen = 4096;
744	int memofs = 0;	952	int memofs = 0;
745	int res = 0;	953	int res = 0;
746	int errorno;	954	int errorno;
747		955
748	if (!dirp)	956	LOCK (wrklock);
749	return -1;	957	self->dirp = dirp = opendir (req->dataptr);
750		958	self->dbuf = u = malloc (sizeof (*u));
751	names = malloc (memlen);	959	req->data2ptr = names = malloc (memlen);
		960	UNLOCK (wrklock);
		961
		962	if (dirp && u && names)
		963	for (;;)
		964	{
		965	errno = 0;
		966	readdir_r (dirp, &u->d, &entp);
		967
		968	if (!entp)
		969	break;
		970
		971	name = entp->d_name;
		972
		973	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		974	{
		975	int len = strlen (name) + 1;
		976
		977	res++;
		978
		979	while (memofs + len > memlen)
		980	{
		981	memlen *= 2;
		982	LOCK (wrklock);
		983	req->data2ptr = names = realloc (names, memlen);
		984	UNLOCK (wrklock);
		985
		986	if (!names)
		987	break;
		988	}
		989
		990	memcpy (names + memofs, name, len);
		991	memofs += len;
		992	}
		993	}
		994
		995	if (errno)
		996	res = -1;
		997
		998	req->result = res;
		999	}
		1000
		1001	/*****************************************************************************/
		1002
		1003	static void *aio_proc (void *thr_arg)
		1004	{
		1005	aio_req req;
		1006	worker *self = (worker *)thr_arg;
752		1007
753	for (;;)	1008	for (;;)
754	{	1009	{
755	errno = 0, readdir_r (dirp, &u.d, &entp);	1010	LOCK (reqlock);
756
757	if (!entp)
758	break;
759
760	name = entp->d_name;
761
762	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
763	{
764	int len = strlen (name) + 1;
765
766	res++;
767
768	while (memofs + len > memlen)
769	{
770	memlen *= 2;
771	names = realloc (names, memlen);
772	if (!names)
773	break;
774	}
775
776	memcpy (names + memofs, name, len);
777	memofs += len;
778	}
779	}
780
781	errorno = errno;
782	closedir (dirp);
783
784	if (errorno)
785	{
786	free (names);
787	errno = errorno;
788	res = -1;
789	}
790
791	*namesp = (void *)names;
792	return res;
793	}
794
795	/*****************************************************************************/
796
797	static void *aio_proc (void *thr_arg)
798	{
799	aio_req req;
800	int type;
801
802	do
803	{
804	pthread_mutex_lock (&reqlock);
805		1011
806	for (;;)	1012	for (;;)
807	{	1013	{
808	req = reqs;	1014	self->req = req = reqq_shift (&req_queue);
809
810	if (reqs)
811	{
812	reqs = reqs->next;
813	if (!reqs) reqe = 0;
814	}
815		1015
816	if (req)	1016	if (req)
817	break;	1017	break;
818		1018
819	pthread_cond_wait (&reqwait, &reqlock);	1019	pthread_cond_wait (&reqwait, &reqlock);
820	}	1020	}
821		1021
822	pthread_mutex_unlock (&reqlock);	1022	--nready;
		1023
		1024	UNLOCK (reqlock);
823		1025
824	errno = 0; /* strictly unnecessary */	1026	errno = 0; /* strictly unnecessary */
825	type = req->type; /* remember type for QUIT check */
826		1027
827	if (!(req->flags & FLAG_CANCELLED))	1028	if (!(req->flags & FLAG_CANCELLED))
828	switch (type)	1029	switch (req->type)
829	{	1030	{
830	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1031	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
831	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1032	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
832		1033
833	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1034	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
834	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	1035	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
835		1036
836	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1037	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
837	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1038	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
838	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1039	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
839		1040
…		…
842	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1043	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
843	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1044	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
844	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1045	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
845	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1046	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
846	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1047	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
		1048	case REQ_MKNOD: req->result = mknod (req->data2ptr, req->mode, (dev_t)req->offset); break;
847		1049
848	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1050	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
849	case REQ_FSYNC: req->result = fsync (req->fd); break;	1051	case REQ_FSYNC: req->result = fsync (req->fd); break;
850	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	1052	case REQ_READDIR: scandir_ (req, self); break;
851		1053
852	case REQ_SLEEP:	1054	case REQ_BUSY:
853	{	1055	{
854	struct timeval tv;	1056	struct timeval tv;
855		1057
856	tv.tv_sec = req->fd;	1058	tv.tv_sec = req->fd;
857	tv.tv_usec = req->fd2;	1059	tv.tv_usec = req->fd2;
…		…
859	req->result = select (0, 0, 0, 0, &tv);	1061	req->result = select (0, 0, 0, 0, &tv);
860	}	1062	}
861		1063
862	case REQ_GROUP:	1064	case REQ_GROUP:
863	case REQ_NOP:	1065	case REQ_NOP:
		1066	break;
		1067
864	case REQ_QUIT:	1068	case REQ_QUIT:
		1069	LOCK (wrklock);
		1070	worker_free (self);
		1071	--started;
		1072	UNLOCK (wrklock);
865	break;	1073	return 0;
866		1074
867	default:	1075	default:
868	req->result = ENOSYS;	1076	req->result = ENOSYS;
869	break;	1077	break;
870	}	1078	}
871		1079
872	req->errorno = errno;	1080	req->errorno = errno;
873		1081
874	pthread_mutex_lock (&reslock);	1082	LOCK (reslock);
875		1083
876	req->next = 0;	1084	++npending;
877		1085
878	if (rese)	1086	if (!reqq_push (&res_queue, req))
879	{
880	rese->next = req;
881	rese = req;
882	}
883	else
884	{
885	rese = ress = req;
886
887	/* write a dummy byte to the pipe so fh becomes ready */	1087	/* write a dummy byte to the pipe so fh becomes ready */
888	write (respipe [1], &respipe, 1);	1088	write (respipe [1], &respipe, 1);
889	}
890		1089
891	pthread_mutex_unlock (&reslock);	1090	self->req = 0;
892	}	1091	worker_clear (self);
893	while (type != REQ_QUIT);
894		1092
895	return 0;	1093	UNLOCK (reslock);
		1094	}
896	}	1095	}
897		1096
898	/*****************************************************************************/	1097	/*****************************************************************************/
899		1098
900	static void atfork_prepare (void)	1099	static void atfork_prepare (void)
901	{	1100	{
902	pthread_mutex_lock (&reqlock);	1101	LOCK (wrklock);
903	pthread_mutex_lock (&reslock);	1102	LOCK (reqlock);
		1103	LOCK (reslock);
904	#if !HAVE_PREADWRITE	1104	#if !HAVE_PREADWRITE
905	pthread_mutex_lock (&preadwritelock);	1105	LOCK (preadwritelock);
906	#endif	1106	#endif
907	#if !HAVE_READDIR_R	1107	#if !HAVE_READDIR_R
908	pthread_mutex_lock (&readdirlock);	1108	LOCK (readdirlock);
909	#endif	1109	#endif
910	}	1110	}
911		1111
912	static void atfork_parent (void)	1112	static void atfork_parent (void)
913	{	1113	{
914	#if !HAVE_READDIR_R	1114	#if !HAVE_READDIR_R
915	pthread_mutex_unlock (&readdirlock);	1115	UNLOCK (readdirlock);
916	#endif	1116	#endif
917	#if !HAVE_PREADWRITE	1117	#if !HAVE_PREADWRITE
918	pthread_mutex_unlock (&preadwritelock);	1118	UNLOCK (preadwritelock);
919	#endif	1119	#endif
920	pthread_mutex_unlock (&reslock);	1120	UNLOCK (reslock);
921	pthread_mutex_unlock (&reqlock);	1121	UNLOCK (reqlock);
		1122	UNLOCK (wrklock);
922	}	1123	}
923		1124
924	static void atfork_child (void)	1125	static void atfork_child (void)
925	{	1126	{
926	aio_req prv;	1127	aio_req prv;
927		1128
		1129	while (prv = reqq_shift (&req_queue))
		1130	req_free (prv);
		1131
		1132	while (prv = reqq_shift (&res_queue))
		1133	req_free (prv);
		1134
		1135	while (wrk_first.next != &wrk_first)
		1136	{
		1137	worker *wrk = wrk_first.next;
		1138
		1139	if (wrk->req)
		1140	req_free (wrk->req);
		1141
		1142	worker_clear (wrk);
		1143	worker_free (wrk);
		1144	}
		1145
928	started = 0;	1146	started = 0;
929		1147	nreqs = 0;
930	while (reqs)
931	{
932	prv = reqs;
933	reqs = prv->next;
934	req_free (prv);
935	}
936
937	reqs = reqe = 0;
938
939	while (ress)
940	{
941	prv = ress;
942	ress = prv->next;
943	req_free (prv);
944	}
945
946	ress = rese = 0;
947		1148
948	close (respipe [0]);	1149	close (respipe [0]);
949	close (respipe [1]);	1150	close (respipe [1]);
950	create_pipe ();	1151	create_pipe ();
951		1152
…		…
978	PROTOTYPES: ENABLE	1179	PROTOTYPES: ENABLE
979		1180
980	BOOT:	1181	BOOT:
981	{	1182	{
982	HV *stash = gv_stashpv ("IO::AIO", 1);	1183	HV *stash = gv_stashpv ("IO::AIO", 1);
		1184
983	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1185	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
984	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1186	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
985	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1187	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1188	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1189	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1190	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
986		1191
987	create_pipe ();	1192	create_pipe ();
988	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1193	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
989	}
990		1194
		1195	start_thread ();
		1196	}
		1197
991	void	1198	void
992	min_parallel (nthreads)	1199	min_parallel (int nthreads)
993	int nthreads
994	PROTOTYPE: $	1200	PROTOTYPE: $
995		1201
996	void	1202	void
997	max_parallel (nthreads)	1203	max_parallel (int nthreads)
998	int nthreads
999	PROTOTYPE: $	1204	PROTOTYPE: $
1000		1205
1001	int	1206	int
1002	max_outstanding (nreqs)	1207	max_outstanding (int maxreqs)
1003	int nreqs	1208	PROTOTYPE: $
1004	PROTOTYPE: $
1005	CODE:	1209	CODE:
1006	RETVAL = max_outstanding;	1210	RETVAL = max_outstanding;
1007	max_outstanding = nreqs;	1211	max_outstanding = maxreqs;
		1212	OUTPUT:
		1213	RETVAL
1008		1214
1009	void	1215	void
1010	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1216	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
1011	SV * pathname	1217	SV * pathname
1012	int flags	1218	int flags
…		…
1227		1433
1228	REQ_SEND;	1434	REQ_SEND;
1229	}	1435	}
1230		1436
1231	void	1437	void
		1438	aio_mknod (pathname,mode,dev,callback=&PL_sv_undef)
		1439	SV * pathname
		1440	SV * callback
		1441	UV mode
		1442	UV dev
		1443	PPCODE:
		1444	{
		1445	dREQ;
		1446
		1447	req->type = REQ_MKNOD;
		1448	req->data = newSVsv (pathname);
		1449	req->dataptr = SvPVbyte_nolen (req->data);
		1450	req->mode = (mode_t)mode;
		1451	req->offset = dev;
		1452
		1453	REQ_SEND;
		1454	}
		1455
		1456	void
1232	aio_sleep (delay,callback=&PL_sv_undef)	1457	aio_busy (delay,callback=&PL_sv_undef)
1233	double delay	1458	double delay
1234	SV * callback	1459	SV * callback
1235	PPCODE:	1460	PPCODE:
1236	{	1461	{
1237	dREQ;	1462	dREQ;
1238		1463
1239	req->type = REQ_SLEEP;	1464	req->type = REQ_BUSY;
1240	req->fd = delay < 0. ? 0 : delay;	1465	req->fd = delay < 0. ? 0 : delay;
1241	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);	1466	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1242		1467
1243	REQ_SEND;	1468	REQ_SEND;
1244	}	1469	}
…		…
1267	req->type = REQ_NOP;	1492	req->type = REQ_NOP;
1268		1493
1269	REQ_SEND;	1494	REQ_SEND;
1270	}	1495	}
1271		1496
1272	#if 0	1497	int
1273		1498	aioreq_pri (int pri = 0)
1274	void	1499	PROTOTYPE: ;$
1275	aio_pri (int pri = DEFAULT_PRI)
1276	CODE:	1500	CODE:
		1501	RETVAL = next_pri - PRI_BIAS;
		1502	if (items > 0)
		1503	{
1277	if (pri < PRI_MIN) pri = PRI_MIN;	1504	if (pri < PRI_MIN) pri = PRI_MIN;
1278	if (pri > PRI_MAX) pri = PRI_MAX;	1505	if (pri > PRI_MAX) pri = PRI_MAX;
1279	next_pri = pri + PRI_BIAS;	1506	next_pri = pri + PRI_BIAS;
		1507	}
		1508	OUTPUT:
		1509	RETVAL
1280		1510
1281	#endif	1511	void
		1512	aioreq_nice (int nice = 0)
		1513	CODE:
		1514	nice = next_pri - nice;
		1515	if (nice < PRI_MIN) nice = PRI_MIN;
		1516	if (nice > PRI_MAX) nice = PRI_MAX;
		1517	next_pri = nice + PRI_BIAS;
1282		1518
1283	void	1519	void
1284	flush ()	1520	flush ()
1285	PROTOTYPE:	1521	PROTOTYPE:
1286	CODE:	1522	CODE:
1287	while (nreqs)	1523	while (nreqs)
1288	{	1524	{
1289	poll_wait ();	1525	poll_wait ();
1290	poll_cb ();	1526	poll_cb (0);
1291	}	1527	}
1292		1528
1293	void	1529	void
1294	poll()	1530	poll()
1295	PROTOTYPE:	1531	PROTOTYPE:
1296	CODE:	1532	CODE:
1297	if (nreqs)	1533	if (nreqs)
1298	{	1534	{
1299	poll_wait ();	1535	poll_wait ();
1300	poll_cb ();	1536	poll_cb (0);
1301	}	1537	}
1302		1538
1303	int	1539	int
1304	poll_fileno()	1540	poll_fileno()
1305	PROTOTYPE:	1541	PROTOTYPE:
…		…
1310		1546
1311	int	1547	int
1312	poll_cb(...)	1548	poll_cb(...)
1313	PROTOTYPE:	1549	PROTOTYPE:
1314	CODE:	1550	CODE:
1315	RETVAL = poll_cb ();	1551	RETVAL = poll_cb (0);
		1552	OUTPUT:
		1553	RETVAL
		1554
		1555	int
		1556	poll_some(int max = 0)
		1557	PROTOTYPE: $
		1558	CODE:
		1559	RETVAL = poll_cb (max);
1316	OUTPUT:	1560	OUTPUT:
1317	RETVAL	1561	RETVAL
1318		1562
1319	void	1563	void
1320	poll_wait()	1564	poll_wait()
…		…
1329	CODE:	1573	CODE:
1330	RETVAL = nreqs;	1574	RETVAL = nreqs;
1331	OUTPUT:	1575	OUTPUT:
1332	RETVAL	1576	RETVAL
1333		1577
		1578	int
		1579	nready()
		1580	PROTOTYPE:
		1581	CODE:
		1582	RETVAL = get_nready ();
		1583	OUTPUT:
		1584	RETVAL
		1585
		1586	int
		1587	npending()
		1588	PROTOTYPE:
		1589	CODE:
		1590	RETVAL = get_npending ();
		1591	OUTPUT:
		1592	RETVAL
		1593
1334	PROTOTYPES: DISABLE	1594	PROTOTYPES: DISABLE
1335		1595
1336	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1596	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1337		1597
1338	void	1598	void
1339	cancel (aio_req_ornot req)	1599	cancel (aio_req_ornot req)
1340	PROTOTYPE:
1341	CODE:	1600	CODE:
1342	req_cancel (req);	1601	req_cancel (req);
1343		1602
1344	void	1603	void
1345	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)	1604	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
…		…
1381	}	1640	}
1382	}	1641	}
1383	}	1642	}
1384		1643
1385	void	1644	void
		1645	cancel_subs (aio_req_ornot req)
		1646	CODE:
		1647	req_cancel_subs (req);
		1648
		1649	void
1386	result (aio_req grp, ...)	1650	result (aio_req grp, ...)
1387	CODE:	1651	CODE:
1388	{	1652	{
1389	int i;	1653	int i;
		1654	AV *av;
		1655
		1656	grp->errorno = errno;
		1657
1390	AV *av = newAV ();	1658	av = newAV ();
1391		1659
1392	for (i = 1; i < items; ++i )	1660	for (i = 1; i < items; ++i )
1393	av_push (av, newSVsv (ST (i)));	1661	av_push (av, newSVsv (ST (i)));
1394		1662
1395	SvREFCNT_dec (grp->data);	1663	SvREFCNT_dec (grp->data);
1396	grp->data = (SV *)av;	1664	grp->data = (SV *)av;
1397	}	1665	}
1398		1666
1399	void	1667	void
		1668	errno (aio_req grp, int errorno = errno)
		1669	CODE:
		1670	grp->errorno = errorno;
		1671
		1672	void
1400	feed_limit (aio_req grp, int limit)	1673	limit (aio_req grp, int limit)
1401	CODE:	1674	CODE:
1402	grp->fd2 = limit;	1675	grp->fd2 = limit;
1403	aio_grp_feed (grp);	1676	aio_grp_feed (grp);
1404		1677
1405	void	1678	void

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