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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs.
Revision 1.78 by root, Thu Oct 26 14:35:34 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"
…		…
9		18
10	#include <pthread.h>	19	#include <pthread.h>
11		20
12	#include <stddef.h>	21	#include <stddef.h>
13	#include <errno.h>	22	#include <errno.h>
		23	#include <sys/time.h>
		24	#include <sys/select.h>
14	#include <sys/types.h>	25	#include <sys/types.h>
15	#include <sys/stat.h>	26	#include <sys/stat.h>
16	#include <limits.h>	27	#include <limits.h>
17	#include <unistd.h>	28	#include <unistd.h>
18	#include <fcntl.h>	29	#include <fcntl.h>
…		…
37	/* used for struct dirent, AIX doesn't provide it */	48	/* used for struct dirent, AIX doesn't provide it */
38	#ifndef NAME_MAX	49	#ifndef NAME_MAX
39	# define NAME_MAX 4096	50	# define NAME_MAX 4096
40	#endif	51	#endif
41		52
		53	#ifndef PTHREAD_STACK_MIN
		54	/* care for broken platforms, e.g. windows */
		55	# define PTHREAD_STACK_MIN 16384
		56	#endif
		57
42	#if __ia64	58	#if __ia64
43	# define STACKSIZE 65536	59	# define STACKSIZE 65536
		60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		61	# define STACKSIZE PTHREAD_STACK_MIN
44	#else	62	#else
45	# define STACKSIZE 8192	63	# define STACKSIZE 16384
46	#endif	64	#endif
		65
		66	/* buffer size for various temporary buffers */
		67	#define AIO_BUFSIZE 65536
		68
		69	#define dBUF \
		70	char *aio_buf; \
		71	LOCK (wrklock); \
		72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		73	UNLOCK (wrklock); \
		74	if (!aio_buf) \
		75	return -1;
47		76
48	enum {	77	enum {
49	REQ_QUIT,	78	REQ_QUIT,
50	REQ_OPEN, REQ_CLOSE,	79	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,	80	REQ_READ, REQ_WRITE, REQ_READAHEAD,
…		…
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,	83	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,	85	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,	86	REQ_LINK, REQ_SYMLINK,
		87	REQ_GROUP, REQ_NOP,
		88	REQ_BUSY,
58	};	89	};
59		90
		91	#define AIO_REQ_KLASS "IO::AIO::REQ"
		92	#define AIO_GRP_KLASS "IO::AIO::GRP"
		93
60	typedef struct aio_cb {	94	typedef struct aio_cb
		95	{
61	struct aio_cb *volatile next;	96	struct aio_cb *volatile next;
62		97
63	int type;	98	SV *data, *callback;
64		99	SV *fh, *fh2;
65	/* should receive a cleanup, with unions */	100	void *dataptr, *data2ptr;
66	int fd, fd2;	101	Stat_t *statdata;
67	off_t offset;	102	off_t offset;
68	size_t length;	103	size_t length;
69	ssize_t result;	104	ssize_t result;
		105
		106	STRLEN dataoffset;
		107	int type;
		108	int fd, fd2;
		109	int errorno;
70	mode_t mode; /* open */	110	mode_t mode; /* open */
71	int errorno;
72	SV *data, *callback;
73	SV *fh, *fh2;
74	void *dataptr, *data2ptr;
75	STRLEN dataoffset;
76		111
77	Stat_t *statdata;	112	unsigned char flags;
		113	unsigned char pri;
		114
		115	SV *self; /* the perl counterpart of this request, if any */
		116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
78	} aio_cb;	117	} aio_cb;
79		118
		119	enum {
		120	FLAG_CANCELLED = 0x01,
		121	};
		122
80	typedef aio_cb *aio_req;	123	typedef aio_cb *aio_req;
		124	typedef aio_cb *aio_req_ornot;
81		125
		126	enum {
		127	PRI_MIN = -4,
		128	PRI_MAX = 4,
		129
		130	DEFAULT_PRI = 0,
		131	PRI_BIAS = -PRI_MIN,
		132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		133	};
		134
		135	static int next_pri = DEFAULT_PRI + PRI_BIAS;
		136
82	static int started, wanted;	137	static unsigned int started, wanted;
83	static volatile int nreqs;	138	static volatile unsigned int nreqs;
84	static int max_outstanding = 1<<30;	139	static volatile unsigned int max_outstanding = 0xffffffff;
85	static int respipe [2];	140	static int respipe [2];
86		141
		142	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		143	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		144	#else
		145	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		146	#endif
		147
		148	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		149	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		150
		151	/* worker threads management */
		152	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		153
		154	typedef struct worker {
		155	/* locked by wrklock */
		156	struct worker *prev, *next;
		157
		158	pthread_t tid;
		159
		160	/* locked by reslock, reqlock or wrklock */
		161	aio_req req; /* currently processed request */
		162	void *dbuf;
		163	DIR *dirp;
		164	} worker;
		165
		166	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		167
		168	static void worker_clear (worker *wrk)
		169	{
		170	if (wrk->dirp)
		171	{
		172	closedir (wrk->dirp);
		173	wrk->dirp = 0;
		174	}
		175
		176	if (wrk->dbuf)
		177	{
		178	free (wrk->dbuf);
		179	wrk->dbuf = 0;
		180	}
		181	}
		182
		183	static void worker_free (worker *wrk)
		184	{
		185	wrk->next->prev = wrk->prev;
		186	wrk->prev->next = wrk->next;
		187
		188	free (wrk);
		189	}
		190
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	191	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	192	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	193	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90		194
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	195	/*
92	static volatile aio_req ress, rese; /* queue start, queue end */	196	* a somewhat faster data structure might be nice, but
		197	* with 8 priorities this actually needs <20 insns
		198	* per shift, the most expensive operation.
		199	*/
		200	typedef struct {
		201	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		202	int size;
		203	} reqq;
93		204
		205	static reqq req_queue;
		206	static reqq res_queue;
		207
		208	int reqq_push (reqq *q, aio_req req)
		209	{
		210	int pri = req->pri;
		211	req->next = 0;
		212
		213	if (q->qe[pri])
		214	{
		215	q->qe[pri]->next = req;
		216	q->qe[pri] = req;
		217	}
		218	else
		219	q->qe[pri] = q->qs[pri] = req;
		220
		221	return q->size++;
		222	}
		223
		224	aio_req reqq_shift (reqq *q)
		225	{
		226	int pri;
		227
		228	if (!q->size)
		229	return 0;
		230
		231	--q->size;
		232
		233	for (pri = NUM_PRI; pri--; )
		234	{
		235	aio_req req = q->qs[pri];
		236
		237	if (req)
		238	{
		239	if (!(q->qs[pri] = req->next))
		240	q->qe[pri] = 0;
		241
		242	return req;
		243	}
		244	}
		245
		246	abort ();
		247	}
		248
		249	static int poll_cb (int max);
		250	static void req_invoke (aio_req req);
94	static void free_req (aio_req req)	251	static void req_free (aio_req req);
95	{	252	static void req_cancel (aio_req req);
96	if (req->data)
97	SvREFCNT_dec (req->data);
98		253
		254	/* must be called at most once */
		255	static SV *req_sv (aio_req req, const char *klass)
		256	{
99	if (req->fh)	257	if (!req->self)
100	SvREFCNT_dec (req->fh);	258	{
		259	req->self = (SV *)newHV ();
		260	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		261	}
101		262
102	if (req->fh2)	263	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		264	}
		265
		266	static aio_req SvAIO_REQ (SV *sv)
		267	{
		268	MAGIC *mg;
		269
		270	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		271	croak ("object of class " AIO_REQ_KLASS " expected");
		272
		273	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		274
		275	return mg ? (aio_req)mg->mg_ptr : 0;
		276	}
		277
		278	static void aio_grp_feed (aio_req grp)
		279	{
		280	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		281	{
		282	int old_len = grp->length;
		283
		284	if (grp->fh2 && SvOK (grp->fh2))
		285	{
		286	dSP;
		287
		288	ENTER;
		289	SAVETMPS;
		290	PUSHMARK (SP);
		291	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		292	PUTBACK;
		293	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		294	SPAGAIN;
		295	FREETMPS;
		296	LEAVE;
		297	}
		298
		299	/* stop if no progress has been made */
		300	if (old_len == grp->length)
		301	{
103	SvREFCNT_dec (req->fh2);	302	SvREFCNT_dec (grp->fh2);
104		303	grp->fh2 = 0;
105	if (req->statdata)	304	break;
106	Safefree (req->statdata);	305	}
107
108	if (req->callback)
109	SvREFCNT_dec (req->callback);
110
111	if (req->type == REQ_READDIR && req->result >= 0)
112	free (req->data2ptr);
113
114	Safefree (req);
115	}
116
117	static void
118	poll_wait ()
119	{
120	if (nreqs && !ress)
121	{	306	}
		307	}
		308
		309	static void aio_grp_dec (aio_req grp)
		310	{
		311	--grp->length;
		312
		313	/* call feeder, if applicable */
		314	aio_grp_feed (grp);
		315
		316	/* finish, if done */
		317	if (!grp->length && grp->fd)
		318	{
		319	req_invoke (grp);
		320	req_free (grp);
		321	}
		322	}
		323
		324	static void poll_wait ()
		325	{
122	fd_set rfd;	326	fd_set rfd;
		327
		328	while (nreqs)
		329	{
		330	int size;
		331	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		332	LOCK (reslock);
		333	#endif
		334	size = res_queue.size;
		335	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		336	UNLOCK (reslock);
		337	#endif
		338
		339	if (size)
		340	return;
		341
123	FD_ZERO(&rfd);	342	FD_ZERO(&rfd);
124	FD_SET(respipe [0], &rfd);	343	FD_SET(respipe [0], &rfd);
125		344
126	select (respipe [0] + 1, &rfd, 0, 0, 0);	345	select (respipe [0] + 1, &rfd, 0, 0, 0);
127	}	346	}
128	}	347	}
129		348
130	static int	349	static void req_invoke (aio_req req)
131	poll_cb ()	350	{
		351	dSP;
		352
		353	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		354	{
		355	errno = req->errorno;
		356
		357	ENTER;
		358	SAVETMPS;
		359	PUSHMARK (SP);
		360	EXTEND (SP, 1);
		361
		362	switch (req->type)
		363	{
		364	case REQ_READDIR:
		365	{
		366	SV *rv = &PL_sv_undef;
		367
		368	if (req->result >= 0)
		369	{
		370	int i;
		371	char *buf = req->data2ptr;
		372	AV *av = newAV ();
		373
		374	av_extend (av, req->result - 1);
		375
		376	for (i = 0; i < req->result; ++i)
		377	{
		378	SV *sv = newSVpv (buf, 0);
		379
		380	av_store (av, i, sv);
		381	buf += SvCUR (sv) + 1;
		382	}
		383
		384	rv = sv_2mortal (newRV_noinc ((SV *)av));
		385	}
		386
		387	PUSHs (rv);
		388	}
		389	break;
		390
		391	case REQ_OPEN:
		392	{
		393	/* convert fd to fh */
		394	SV *fh;
		395
		396	PUSHs (sv_2mortal (newSViv (req->result)));
		397	PUTBACK;
		398	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		399	SPAGAIN;
		400
		401	fh = SvREFCNT_inc (POPs);
		402
		403	PUSHMARK (SP);
		404	XPUSHs (sv_2mortal (fh));
		405	}
		406	break;
		407
		408	case REQ_GROUP:
		409	req->fd = 2; /* mark group as finished */
		410
		411	if (req->data)
		412	{
		413	int i;
		414	AV *av = (AV *)req->data;
		415
		416	EXTEND (SP, AvFILL (av) + 1);
		417	for (i = 0; i <= AvFILL (av); ++i)
		418	PUSHs (*av_fetch (av, i, 0));
		419	}
		420	break;
		421
		422	case REQ_NOP:
		423	case REQ_BUSY:
		424	break;
		425
		426	default:
		427	PUSHs (sv_2mortal (newSViv (req->result)));
		428	break;
		429	}
		430
		431
		432	PUTBACK;
		433	call_sv (req->callback, G_VOID | G_EVAL);
		434	SPAGAIN;
		435
		436	FREETMPS;
		437	LEAVE;
		438	}
		439
		440	if (req->grp)
		441	{
		442	aio_req grp = req->grp;
		443
		444	/* unlink request */
		445	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		446	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		447
		448	if (grp->grp_first == req)
		449	grp->grp_first = req->grp_next;
		450
		451	aio_grp_dec (grp);
		452	}
		453
		454	if (SvTRUE (ERRSV))
		455	{
		456	req_free (req);
		457	croak (0);
		458	}
		459	}
		460
		461	static void req_free (aio_req req)
		462	{
		463	if (req->self)
		464	{
		465	sv_unmagic (req->self, PERL_MAGIC_ext);
		466	SvREFCNT_dec (req->self);
		467	}
		468
		469	SvREFCNT_dec (req->data);
		470	SvREFCNT_dec (req->fh);
		471	SvREFCNT_dec (req->fh2);
		472	SvREFCNT_dec (req->callback);
		473	Safefree (req->statdata);
		474
		475	if (req->type == REQ_READDIR)
		476	free (req->data2ptr);
		477
		478	Safefree (req);
		479	}
		480
		481	static void req_cancel_subs (aio_req grp)
		482	{
		483	aio_req sub;
		484
		485	if (grp->type != REQ_GROUP)
		486	return;
		487
		488	SvREFCNT_dec (grp->fh2);
		489	grp->fh2 = 0;
		490
		491	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		492	req_cancel (sub);
		493	}
		494
		495	static void req_cancel (aio_req req)
		496	{
		497	req->flags |= FLAG_CANCELLED;
		498
		499	req_cancel_subs (req);
		500	}
		501
		502	static int poll_cb (int max)
132	{	503	{
133	dSP;	504	dSP;
134	int count = 0;	505	int count = 0;
135	int do_croak = 0;	506	int do_croak = 0;
136	aio_req req;	507	aio_req req;
137		508
138	for (;;)	509	for (;;)
139	{	510	{
140	pthread_mutex_lock (&reslock);	511	while (max <= 0 || count < max)
141	req = ress;
142
143	if (req)
144	{	512	{
145	ress = req->next;	513	LOCK (reslock);
		514	req = reqq_shift (&res_queue);
146		515
147	if (!ress)	516	if (req)
148	{	517	{
		518	if (!res_queue.size)
		519	{
149	/* read any signals sent by the worker threads */	520	/* read any signals sent by the worker threads */
150	char buf [32];	521	char buf [32];
151	while (read (respipe [0], buf, 32) == 32)	522	while (read (respipe [0], buf, 32) == 32)
		523	;
152	;	524	}
153
154	rese = 0;
155	}	525	}
156	}
157		526
158	pthread_mutex_unlock (&reslock);	527	UNLOCK (reslock);
159		528
160	if (!req)	529	if (!req)
161	break;	530	break;
162		531
163	nreqs--;	532	--nreqs;
164		533
165	if (req->type == REQ_QUIT)	534	if (req->type == REQ_QUIT)
166	started--;	535	--started;
167	else	536	else if (req->type == REQ_GROUP && req->length)
168	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174
175	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);
177
178	if (req->statdata)
179	{	537	{
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	538	req->fd = 1; /* mark request as delayed */
181	PL_laststatval = req->result;	539	continue;
182	PL_statcache = *(req->statdata);
183	}
184
185	ENTER;
186	PUSHMARK (SP);
187
188	if (req->type == REQ_READDIR)
189	{
190	SV *rv = &PL_sv_undef;
191
192	if (req->result >= 0)
193	{
194	char *buf = req->data2ptr;
195	AV *av = newAV ();
196
197	while (req->result)
198	{
199	SV *sv = newSVpv (buf, 0);
200
201	av_push (av, sv);
202	buf += SvCUR (sv) + 1;
203	req->result--;
204	}
205
206	rv = sv_2mortal (newRV_noinc ((SV *)av));
207	}
208
209	XPUSHs (rv);
210	}	540	}
211	else	541	else
212	{	542	{
213	XPUSHs (sv_2mortal (newSViv (req->result)));
214
215	if (req->type == REQ_OPEN)	543	if (req->type == REQ_READ)
		544	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
		545
		546	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
		547	SvREADONLY_off (req->data);
		548
		549	if (req->statdata)
216	{	550	{
217	/* convert fd to fh */	551	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
218	SV *fh;	552	PL_laststatval = req->result;
219		553	PL_statcache = *(req->statdata);
220	PUTBACK;
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}	554	}
		555
		556	req_invoke (req);
		557
		558	count++;
229	}	559	}
230		560
231	if (SvOK (req->callback))	561	req_free (req);
232	{
233	PUTBACK;
234	call_sv (req->callback, G_VOID | G_EVAL);
235	SPAGAIN;
236
237	if (SvTRUE (ERRSV))
238	{
239	free_req (req);
240	croak (0);
241	}
242	}
243
244	LEAVE;
245
246	errno = errorno;
247	count++;
248	}	562	}
249		563
250	free_req (req);	564	if (nreqs <= max_outstanding)
		565	break;
		566
		567	poll_wait ();
		568
		569	max = 0;
251	}	570	}
252		571
253	return count;	572	return count;
254	}	573	}
255		574
256	static void *aio_proc(void *arg);	575	static void *aio_proc(void *arg);
257		576
258	static void
259	start_thread (void)	577	static void start_thread (void)
260	{	578	{
261	sigset_t fullsigset, oldsigset;	579	sigset_t fullsigset, oldsigset;
262	pthread_t tid;
263	pthread_attr_t attr;	580	pthread_attr_t attr;
		581
		582	worker *wrk = calloc (1, sizeof (worker));
		583
		584	if (!wrk)
		585	croak ("unable to allocate worker thread data");
264		586
265	pthread_attr_init (&attr);	587	pthread_attr_init (&attr);
266	pthread_attr_setstacksize (&attr, STACKSIZE);	588	pthread_attr_setstacksize (&attr, STACKSIZE);
267	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	589	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
268		590
269	sigfillset (&fullsigset);	591	sigfillset (&fullsigset);
		592
		593	LOCK (wrklock);
270	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	594	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
271		595
272	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	596	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		597	{
		598	wrk->prev = &wrk_first;
		599	wrk->next = wrk_first.next;
		600	wrk_first.next->prev = wrk;
		601	wrk_first.next = wrk;
273	started++;	602	++started;
		603	}
		604	else
		605	free (wrk);
274		606
275	sigprocmask (SIG_SETMASK, &oldsigset, 0);	607	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		608	UNLOCK (wrklock);
276	}	609	}
277		610
278	static void	611	static void req_send (aio_req req)
279	send_req (aio_req req)
280	{	612	{
281	while (started < wanted && nreqs >= started)	613	while (started < wanted && nreqs >= started)
282	start_thread ();	614	start_thread ();
283		615
284	nreqs++;	616	++nreqs;
285		617
286	pthread_mutex_lock (&reqlock);	618	LOCK (reqlock);
287		619	reqq_push (&req_queue, req);
288	req->next = 0;
289
290	if (reqe)
291	{
292	reqe->next = req;
293	reqe = req;
294	}
295	else
296	reqe = reqs = req;
297
298	pthread_cond_signal (&reqwait);	620	pthread_cond_signal (&reqwait);
299	pthread_mutex_unlock (&reqlock);	621	UNLOCK (reqlock);
300
301	if (nreqs > max_outstanding)
302	for (;;)
303	{
304	poll_cb ();
305
306	if (nreqs <= max_outstanding)
307	break;
308
309	poll_wait ();
310	}
311	}	622	}
312		623
313	static void	624	static void end_thread (void)
314	end_thread (void)
315	{	625	{
316	aio_req req;	626	aio_req req;
		627
317	Newz (0, req, 1, aio_cb);	628	Newz (0, req, 1, aio_cb);
		629
318	req->type = REQ_QUIT;	630	req->type = REQ_QUIT;
		631	req->pri = PRI_MAX + PRI_BIAS;
319		632
320	send_req (req);	633	req_send (req);
321	}	634	}
322		635
323	static void min_parallel (int nthreads)	636	static void min_parallel (int nthreads)
324	{	637	{
325	if (wanted < nthreads)	638	if (wanted < nthreads)
…		…
340	}	653	}
341		654
342	while (started > wanted)	655	while (started > wanted)
343	{	656	{
344	poll_wait ();	657	poll_wait ();
345	poll_cb ();	658	poll_cb (0);
346	}	659	}
347	}	660	}
348		661
349	static void create_pipe ()	662	static void create_pipe ()
350	{	663	{
…		…
370	* normal read/write by using a mutex. slows down execution a lot,	683	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	684	* but that's your problem, not mine.
372	*/	685	*/
373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	686	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		687
375	static ssize_t	688	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{	689	{
378	ssize_t res;	690	ssize_t res;
379	off_t ooffset;	691	off_t ooffset;
380		692
381	pthread_mutex_lock (&preadwritelock);	693	LOCK (preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	694	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	695	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	696	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	697	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&preadwritelock);	698	UNLOCK (preadwritelock);
387		699
388	return res;	700	return res;
389	}	701	}
390		702
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	703	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	704	{
394	ssize_t res;	705	ssize_t res;
395	off_t ooffset;	706	off_t ooffset;
396		707
397	pthread_mutex_lock (&preadwritelock);	708	LOCK (preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	709	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	710	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	711	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	712	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&preadwritelock);	713	UNLOCK (preadwritelock);
403		714
404	return res;	715	return res;
405	}	716	}
406	#endif	717	#endif
407		718
408	#if !HAVE_FDATASYNC	719	#if !HAVE_FDATASYNC
409	# define fdatasync fsync	720	# define fdatasync fsync
410	#endif	721	#endif
411		722
412	#if !HAVE_READAHEAD	723	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	724	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
414		725
415	static ssize_t	726	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
416	readahead (int fd, off_t offset, size_t count)
417	{	727	{
418	char readahead_buf[4096];	728	dBUF;
419		729
420	while (count > 0)	730	while (count > 0)
421	{	731	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	732	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423		733
424	pread (fd, readahead_buf, len, offset);	734	pread (fd, aio_buf, len, offset);
425	offset += len;	735	offset += len;
426	count -= len;	736	count -= len;
427	}	737	}
428		738
429	errno = 0;	739	errno = 0;
430	}	740	}
		741
431	#endif	742	#endif
432		743
433	#if !HAVE_READDIR_R	744	#if !HAVE_READDIR_R
434	# define readdir_r aio_readdir_r	745	# define readdir_r aio_readdir_r
435		746
436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	747	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437		748
438	static int
439	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	749	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
440	{	750	{
441	struct dirent *e;	751	struct dirent *e;
442	int errorno;	752	int errorno;
443		753
444	pthread_mutex_lock (&readdirlock);	754	LOCK (readdirlock);
445		755
446	e = readdir (dirp);	756	e = readdir (dirp);
447	errorno = errno;	757	errorno = errno;
448		758
449	if (e)	759	if (e)
…		…
452	strcpy (ent->d_name, e->d_name);	762	strcpy (ent->d_name, e->d_name);
453	}	763	}
454	else	764	else
455	*res = 0;	765	*res = 0;
456		766
457	pthread_mutex_unlock (&readdirlock);	767	UNLOCK (readdirlock);
458		768
459	errno = errorno;	769	errno = errorno;
460	return e ? 0 : -1;	770	return e ? 0 : -1;
461	}	771	}
462	#endif	772	#endif
463		773
464	/* sendfile always needs emulation */	774	/* sendfile always needs emulation */
465	static ssize_t
466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	775	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
467	{	776	{
468	ssize_t res;	777	ssize_t res;
469		778
470	if (!count)	779	if (!count)
471	return 0;	780	return 0;
…		…
482	{	791	{
483	off_t sbytes;	792	off_t sbytes;
484	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	793	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
485		794
486	if (res < 0 && sbytes)	795	if (res < 0 && sbytes)
487	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	796	/* maybe only on EAGAIN: as usual, the manpage leaves you guessing */
488	res = sbytes;	797	res = sbytes;
489	}	798	}
490		799
491	# elif __hpux	800	# elif __hpux
492	res = sendfile (ofd, ifd, offset, count, 0, 0);	801	res = sendfile (ofd, ifd, offset, count, 0, 0);
…		…
520	#endif	829	#endif
521	)	830	)
522	)	831	)
523	{	832	{
524	/* emulate sendfile. this is a major pain in the ass */	833	/* emulate sendfile. this is a major pain in the ass */
525	char buf[4096];	834	dBUF;
		835
526	res = 0;	836	res = 0;
527		837
528	while (count)	838	while (count)
529	{	839	{
530	ssize_t cnt;	840	ssize_t cnt;
531		841
532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	842	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
533		843
534	if (cnt <= 0)	844	if (cnt <= 0)
535	{	845	{
536	if (cnt && !res) res = -1;	846	if (cnt && !res) res = -1;
537	break;	847	break;
538	}	848	}
539		849
540	cnt = write (ofd, buf, cnt);	850	cnt = write (ofd, aio_buf, cnt);
541		851
542	if (cnt <= 0)	852	if (cnt <= 0)
543	{	853	{
544	if (cnt && !res) res = -1;	854	if (cnt && !res) res = -1;
545	break;	855	break;
…		…
553		863
554	return res;	864	return res;
555	}	865	}
556		866
557	/* read a full directory */	867	/* read a full directory */
558	static int	868	static void scandir_ (aio_req req, worker *self)
559	scandir_ (const char *path, void **namesp)
560	{	869	{
561	DIR *dirp = opendir (path);	870	DIR *dirp;
562	union	871	union
563	{	872	{
564	struct dirent d;	873	struct dirent d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	874	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566	} u;	875	} *u;
567	struct dirent *entp;	876	struct dirent *entp;
568	char *name, *names;	877	char *name, *names;
569	int memlen = 4096;	878	int memlen = 4096;
570	int memofs = 0;	879	int memofs = 0;
571	int res = 0;	880	int res = 0;
572	int errorno;	881	int errorno;
573		882
574	if (!dirp)	883	LOCK (wrklock);
575	return -1;	884	self->dirp = dirp = opendir (req->dataptr);
576		885	self->dbuf = u = malloc (sizeof (*u));
577	names = malloc (memlen);	886	req->data2ptr = names = malloc (memlen);
		887	UNLOCK (wrklock);
578		888
		889	if (dirp && u && names)
579	for (;;)	890	for (;;)
580	{	891	{
		892	errno = 0;
581	errno = 0, readdir_r (dirp, &u.d, &entp);	893	readdir_r (dirp, &u->d, &entp);
582		894
583	if (!entp)	895	if (!entp)
584	break;	896	break;
585		897
586	name = entp->d_name;	898	name = entp->d_name;
587		899
588	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	900	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589	{	901	{
590	int len = strlen (name) + 1;	902	int len = strlen (name) + 1;
591		903
592	res++;	904	res++;
593		905
594	while (memofs + len > memlen)	906	while (memofs + len > memlen)
595	{	907	{
596	memlen *= 2;	908	memlen *= 2;
		909	LOCK (wrklock);
597	names = realloc (names, memlen);	910	req->data2ptr = names = realloc (names, memlen);
		911	UNLOCK (wrklock);
		912
598	if (!names)	913	if (!names)
599	break;	914	break;
600	}	915	}
601		916
602	memcpy (names + memofs, name, len);	917	memcpy (names + memofs, name, len);
603	memofs += len;	918	memofs += len;
604	}	919	}
605	}	920	}
606		921
607	errorno = errno;
608	closedir (dirp);
609
610	if (errorno)	922	if (errno)
611	{
612	free (names);
613	errno = errorno;
614	res = -1;	923	res = -1;
615	}	924
616		925	req->result = res;
617	*namesp = (void *)names;
618	return res;
619	}	926	}
620		927
621	/*****************************************************************************/	928	/*****************************************************************************/
622		929
623	static void *
624	aio_proc (void *thr_arg)	930	static void *aio_proc (void *thr_arg)
625	{	931	{
626	aio_req req;	932	aio_req req;
627	int type;	933	int type;
		934	worker *self = (worker *)thr_arg;
628		935
629	do	936	do
630	{	937	{
631	pthread_mutex_lock (&reqlock);	938	LOCK (reqlock);
632		939
633	for (;;)	940	for (;;)
634	{	941	{
635	req = reqs;	942	self->req = req = reqq_shift (&req_queue);
636
637	if (reqs)
638	{
639	reqs = reqs->next;
640	if (!reqs) reqe = 0;
641	}
642		943
643	if (req)	944	if (req)
644	break;	945	break;
645		946
646	pthread_cond_wait (&reqwait, &reqlock);	947	pthread_cond_wait (&reqwait, &reqlock);
647	}	948	}
648		949
649	pthread_mutex_unlock (&reqlock);	950	UNLOCK (reqlock);
650		951
651	errno = 0; /* strictly unnecessary */	952	errno = 0; /* strictly unnecessary */
		953	type = req->type; /* remember type for QUIT check */
652		954
653	type = req->type;	955	if (!(req->flags & FLAG_CANCELLED))
654
655	switch (type)	956	switch (type)
656	{	957	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	958	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	959	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
659		960
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	961	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	962	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
662		963
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	964	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	965	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	966	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666		967
667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	968	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668	case REQ_CLOSE: req->result = close (req->fd); break;	969	case REQ_CLOSE: req->result = close (req->fd); break;
669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	970	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	971	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	972	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	973	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	974	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674		975
675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	976	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676	case REQ_FSYNC: req->result = fsync (req->fd); break;	977	case REQ_FSYNC: req->result = fsync (req->fd); break;
677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	978	case REQ_READDIR: scandir_ (req, self); break;
678		979
		980	case REQ_BUSY:
		981	{
		982	struct timeval tv;
		983
		984	tv.tv_sec = req->fd;
		985	tv.tv_usec = req->fd2;
		986
		987	req->result = select (0, 0, 0, 0, &tv);
		988	}
		989
		990	case REQ_GROUP:
		991	case REQ_NOP:
679	case REQ_QUIT:	992	case REQ_QUIT:
680	break;	993	break;
681		994
682	default:	995	default:
683	req->result = ENOSYS;	996	req->result = ENOSYS;
684	break;	997	break;
685	}	998	}
686		999
687	req->errorno = errno;	1000	req->errorno = errno;
688		1001
689	pthread_mutex_lock (&reslock);	1002	LOCK (reslock);
690		1003
691	req->next = 0;	1004	if (!reqq_push (&res_queue, req))
692
693	if (rese)
694	{
695	rese->next = req;
696	rese = req;
697	}
698	else
699	{
700	rese = ress = req;
701
702	/* write a dummy byte to the pipe so fh becomes ready */	1005	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);	1006	write (respipe [1], &respipe, 1);
704	}
705		1007
706	pthread_mutex_unlock (&reslock);	1008	self->req = 0;
		1009	worker_clear (self);
		1010
		1011	UNLOCK (reslock);
707	}	1012	}
708	while (type != REQ_QUIT);	1013	while (type != REQ_QUIT);
709		1014
		1015	LOCK (wrklock);
		1016	worker_free (self);
		1017	UNLOCK (wrklock);
		1018
710	return 0;	1019	return 0;
711	}	1020	}
712		1021
713	/*****************************************************************************/	1022	/*****************************************************************************/
714		1023
715	static void atfork_prepare (void)	1024	static void atfork_prepare (void)
716	{	1025	{
717	pthread_mutex_lock (&reqlock);	1026	LOCK (wrklock);
718	pthread_mutex_lock (&reslock);	1027	LOCK (reqlock);
		1028	LOCK (reslock);
719	#if !HAVE_PREADWRITE	1029	#if !HAVE_PREADWRITE
720	pthread_mutex_lock (&preadwritelock);	1030	LOCK (preadwritelock);
721	#endif	1031	#endif
722	#if !HAVE_READDIR_R	1032	#if !HAVE_READDIR_R
723	pthread_mutex_lock (&readdirlock);	1033	LOCK (readdirlock);
724	#endif	1034	#endif
725	}	1035	}
726		1036
727	static void atfork_parent (void)	1037	static void atfork_parent (void)
728	{	1038	{
729	#if !HAVE_READDIR_R	1039	#if !HAVE_READDIR_R
730	pthread_mutex_unlock (&readdirlock);	1040	UNLOCK (readdirlock);
731	#endif	1041	#endif
732	#if !HAVE_PREADWRITE	1042	#if !HAVE_PREADWRITE
733	pthread_mutex_unlock (&preadwritelock);	1043	UNLOCK (preadwritelock);
734	#endif	1044	#endif
735	pthread_mutex_unlock (&reslock);	1045	UNLOCK (reslock);
736	pthread_mutex_unlock (&reqlock);	1046	UNLOCK (reqlock);
		1047	UNLOCK (wrklock);
737	}	1048	}
738		1049
739	static void atfork_child (void)	1050	static void atfork_child (void)
740	{	1051	{
741	aio_req prv;	1052	aio_req prv;
742		1053
		1054	while (prv = reqq_shift (&req_queue))
		1055	req_free (prv);
		1056
		1057	while (prv = reqq_shift (&res_queue))
		1058	req_free (prv);
		1059
		1060	while (wrk_first.next != &wrk_first)
		1061	{
		1062	worker *wrk = wrk_first.next;
		1063
		1064	if (wrk->req)
		1065	req_free (wrk->req);
		1066
		1067	worker_clear (wrk);
		1068	worker_free (wrk);
		1069	}
		1070
743	started = 0;	1071	started = 0;
744		1072	nreqs = 0;
745	while (reqs)
746	{
747	prv = reqs;
748	reqs = prv->next;
749	free_req (prv);
750	}
751
752	reqs = reqe = 0;
753
754	while (ress)
755	{
756	prv = ress;
757	ress = prv->next;
758	free_req (prv);
759	}
760
761	ress = rese = 0;
762		1073
763	close (respipe [0]);	1074	close (respipe [0]);
764	close (respipe [1]);	1075	close (respipe [1]);
765	create_pipe ();	1076	create_pipe ();
766		1077
767	atfork_parent ();	1078	atfork_parent ();
768	}	1079	}
769		1080
770	#define dREQ \	1081	#define dREQ \
771	aio_req req; \	1082	aio_req req; \
		1083	int req_pri = next_pri; \
		1084	next_pri = DEFAULT_PRI + PRI_BIAS; \
772	\	1085	\
773	if (SvOK (callback) && !SvROK (callback)) \	1086	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \	1087	croak ("callback must be undef or of reference type"); \
775	\	1088	\
776	Newz (0, req, 1, aio_cb); \	1089	Newz (0, req, 1, aio_cb); \
777	if (!req) \	1090	if (!req) \
778	croak ("out of memory during aio_req allocation"); \	1091	croak ("out of memory during aio_req allocation"); \
779	\	1092	\
780	req->callback = newSVsv (callback);	1093	req->callback = newSVsv (callback); \
		1094	req->pri = req_pri
		1095
		1096	#define REQ_SEND \
		1097	req_send (req); \
		1098	\
		1099	if (GIMME_V != G_VOID) \
		1100	XPUSHs (req_sv (req, AIO_REQ_KLASS));
781		1101
782	MODULE = IO::AIO PACKAGE = IO::AIO	1102	MODULE = IO::AIO PACKAGE = IO::AIO
783		1103
784	PROTOTYPES: ENABLE	1104	PROTOTYPES: ENABLE
785		1105
…		…
793	create_pipe ();	1113	create_pipe ();
794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1114	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
795	}	1115	}
796		1116
797	void	1117	void
798	min_parallel (nthreads)	1118	min_parallel (int nthreads)
799	int nthreads
800	PROTOTYPE: $	1119	PROTOTYPE: $
801		1120
802	void	1121	void
803	max_parallel (nthreads)	1122	max_parallel (int nthreads)
804	int nthreads
805	PROTOTYPE: $	1123	PROTOTYPE: $
806		1124
807	int	1125	int
808	max_outstanding (nreqs)	1126	max_outstanding (int maxreqs)
809	int nreqs	1127	PROTOTYPE: $
810	PROTOTYPE: $
811	CODE:	1128	CODE:
812	RETVAL = max_outstanding;	1129	RETVAL = max_outstanding;
813	max_outstanding = nreqs;	1130	max_outstanding = maxreqs;
		1131	OUTPUT:
		1132	RETVAL
814		1133
815	void	1134	void
816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1135	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
817	SV * pathname	1136	SV * pathname
818	int flags	1137	int flags
819	int mode	1138	int mode
820	SV * callback	1139	SV * callback
821	PROTOTYPE: $$$;$	1140	PROTOTYPE: $$$;$
822	CODE:	1141	PPCODE:
823	{	1142	{
824	dREQ;	1143	dREQ;
825		1144
826	req->type = REQ_OPEN;	1145	req->type = REQ_OPEN;
827	req->data = newSVsv (pathname);	1146	req->data = newSVsv (pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);	1147	req->dataptr = SvPVbyte_nolen (req->data);
829	req->fd = flags;	1148	req->fd = flags;
830	req->mode = mode;	1149	req->mode = mode;
831		1150
832	send_req (req);	1151	REQ_SEND;
833	}	1152	}
834		1153
835	void	1154	void
836	aio_close (fh,callback=&PL_sv_undef)	1155	aio_close (fh,callback=&PL_sv_undef)
837	SV * fh	1156	SV * fh
…		…
839	PROTOTYPE: $;$	1158	PROTOTYPE: $;$
840	ALIAS:	1159	ALIAS:
841	aio_close = REQ_CLOSE	1160	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	1161	aio_fsync = REQ_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	1162	aio_fdatasync = REQ_FDATASYNC
844	CODE:	1163	PPCODE:
845	{	1164	{
846	dREQ;	1165	dREQ;
847		1166
848	req->type = ix;	1167	req->type = ix;
849	req->fh = newSVsv (fh);	1168	req->fh = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1169	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
851		1170
852	send_req (req);	1171	REQ_SEND (req);
853	}	1172	}
854		1173
855	void	1174	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1175	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
857	SV * fh	1176	SV * fh
…		…
862	SV * callback	1181	SV * callback
863	ALIAS:	1182	ALIAS:
864	aio_read = REQ_READ	1183	aio_read = REQ_READ
865	aio_write = REQ_WRITE	1184	aio_write = REQ_WRITE
866	PROTOTYPE: $$$$$;$	1185	PROTOTYPE: $$$$$;$
867	CODE:	1186	PPCODE:
868	{	1187	{
869	aio_req req;	1188	aio_req req;
870	STRLEN svlen;	1189	STRLEN svlen;
871	char *svptr = SvPVbyte (data, svlen);	1190	char *svptr = SvPVbyte (data, svlen);
872		1191
…		…
910	{	1229	{
911	SvREADONLY_on (data);	1230	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	1231	req->data2ptr = (void *)data;
913	}	1232	}
914		1233
915	send_req (req);	1234	REQ_SEND;
916	}	1235	}
917	}	1236	}
918		1237
919	void	1238	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1239	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
…		…
922	SV * in_fh	1241	SV * in_fh
923	UV in_offset	1242	UV in_offset
924	UV length	1243	UV length
925	SV * callback	1244	SV * callback
926	PROTOTYPE: $$$$;$	1245	PROTOTYPE: $$$$;$
927	CODE:	1246	PPCODE:
928	{	1247	{
929	dREQ;	1248	dREQ;
930		1249
931	req->type = REQ_SENDFILE;	1250	req->type = REQ_SENDFILE;
932	req->fh = newSVsv (out_fh);	1251	req->fh = newSVsv (out_fh);
…		…
934	req->fh2 = newSVsv (in_fh);	1253	req->fh2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1254	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936	req->offset = in_offset;	1255	req->offset = in_offset;
937	req->length = length;	1256	req->length = length;
938		1257
939	send_req (req);	1258	REQ_SEND;
940	}	1259	}
941		1260
942	void	1261	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1262	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
944	SV * fh	1263	SV * fh
945	UV offset	1264	UV offset
946	IV length	1265	IV length
947	SV * callback	1266	SV * callback
948	PROTOTYPE: $$$;$	1267	PROTOTYPE: $$$;$
949	CODE:	1268	PPCODE:
950	{	1269	{
951	dREQ;	1270	dREQ;
952		1271
953	req->type = REQ_READAHEAD;	1272	req->type = REQ_READAHEAD;
954	req->fh = newSVsv (fh);	1273	req->fh = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1274	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
956	req->offset = offset;	1275	req->offset = offset;
957	req->length = length;	1276	req->length = length;
958		1277
959	send_req (req);	1278	REQ_SEND;
960	}	1279	}
961		1280
962	void	1281	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	1282	aio_stat (fh_or_path,callback=&PL_sv_undef)
964	SV * fh_or_path	1283	SV * fh_or_path
965	SV * callback	1284	SV * callback
966	ALIAS:	1285	ALIAS:
967	aio_stat = REQ_STAT	1286	aio_stat = REQ_STAT
968	aio_lstat = REQ_LSTAT	1287	aio_lstat = REQ_LSTAT
969	CODE:	1288	PPCODE:
970	{	1289	{
971	dREQ;	1290	dREQ;
972		1291
973	New (0, req->statdata, 1, Stat_t);	1292	New (0, req->statdata, 1, Stat_t);
974	if (!req->statdata)	1293	if (!req->statdata)
975	{	1294	{
976	free_req (req);	1295	req_free (req);
977	croak ("out of memory during aio_req->statdata allocation");	1296	croak ("out of memory during aio_req->statdata allocation");
978	}	1297	}
979		1298
980	if (SvPOK (fh_or_path))	1299	if (SvPOK (fh_or_path))
981	{	1300	{
…		…
988	req->type = REQ_FSTAT;	1307	req->type = REQ_FSTAT;
989	req->fh = newSVsv (fh_or_path);	1308	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1309	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
991	}	1310	}
992		1311
993	send_req (req);	1312	REQ_SEND;
994	}	1313	}
995		1314
996	void	1315	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	1316	aio_unlink (pathname,callback=&PL_sv_undef)
998	SV * pathname	1317	SV * pathname
999	SV * callback	1318	SV * callback
1000	ALIAS:	1319	ALIAS:
1001	aio_unlink = REQ_UNLINK	1320	aio_unlink = REQ_UNLINK
1002	aio_rmdir = REQ_RMDIR	1321	aio_rmdir = REQ_RMDIR
1003	aio_readdir = REQ_READDIR	1322	aio_readdir = REQ_READDIR
1004	CODE:	1323	PPCODE:
1005	{	1324	{
1006	dREQ;	1325	dREQ;
1007		1326
1008	req->type = ix;	1327	req->type = ix;
1009	req->data = newSVsv (pathname);	1328	req->data = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	1329	req->dataptr = SvPVbyte_nolen (req->data);
1011		1330
1012	send_req (req);	1331	REQ_SEND;
1013	}	1332	}
1014		1333
1015	void	1334	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1335	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1017	SV * oldpath	1336	SV * oldpath
…		…
1019	SV * callback	1338	SV * callback
1020	ALIAS:	1339	ALIAS:
1021	aio_link = REQ_LINK	1340	aio_link = REQ_LINK
1022	aio_symlink = REQ_SYMLINK	1341	aio_symlink = REQ_SYMLINK
1023	aio_rename = REQ_RENAME	1342	aio_rename = REQ_RENAME
1024	CODE:	1343	PPCODE:
1025	{	1344	{
1026	dREQ;	1345	dREQ;
1027		1346
1028	req->type = ix;	1347	req->type = ix;
1029	req->fh = newSVsv (oldpath);	1348	req->fh = newSVsv (oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	1349	req->data2ptr = SvPVbyte_nolen (req->fh);
1031	req->data = newSVsv (newpath);	1350	req->data = newSVsv (newpath);
1032	req->dataptr = SvPVbyte_nolen (req->data);	1351	req->dataptr = SvPVbyte_nolen (req->data);
1033		1352
1034	send_req (req);	1353	REQ_SEND;
1035	}	1354	}
1036		1355
1037	#if 0
1038
1039	# undocumented, because it does not cancel active requests
1040	void	1356	void
1041	cancel_most_requests ()	1357	aio_busy (delay,callback=&PL_sv_undef)
		1358	double delay
		1359	SV * callback
		1360	PPCODE:
		1361	{
		1362	dREQ;
		1363
		1364	req->type = REQ_BUSY;
		1365	req->fd = delay < 0. ? 0 : delay;
		1366	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1367
		1368	REQ_SEND;
		1369	}
		1370
		1371	void
		1372	aio_group (callback=&PL_sv_undef)
		1373	SV * callback
1042	PROTOTYPE:	1374	PROTOTYPE: ;$
1043	CODE:	1375	PPCODE:
1044	{	1376	{
1045	aio_req *req;	1377	dREQ;
1046		1378
1047	pthread_mutex_lock (&reqlock);	1379	req->type = REQ_GROUP;
1048	for (req = reqs; req; req = req->next)	1380	req_send (req);
1049	req->flags |= 1;
1050	pthread_mutex_unlock (&reqlock);
1051		1381
1052	pthread_mutex_lock (&reslock);	1382	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1053	for (req = ress; req; req = req->next)
1054	req->flags |= 1;
1055	pthread_mutex_unlock (&reslock);
1056	}	1383	}
1057		1384
1058	#endif	1385	void
		1386	aio_nop (callback=&PL_sv_undef)
		1387	SV * callback
		1388	PPCODE:
		1389	{
		1390	dREQ;
		1391
		1392	req->type = REQ_NOP;
		1393
		1394	REQ_SEND;
		1395	}
		1396
		1397	void
		1398	aioreq_pri (int pri = DEFAULT_PRI)
		1399	CODE:
		1400	if (pri < PRI_MIN) pri = PRI_MIN;
		1401	if (pri > PRI_MAX) pri = PRI_MAX;
		1402	next_pri = pri + PRI_BIAS;
		1403
		1404	void
		1405	aioreq_nice (int nice = 0)
		1406	CODE:
		1407	nice = next_pri - nice;
		1408	if (nice < PRI_MIN) nice = PRI_MIN;
		1409	if (nice > PRI_MAX) nice = PRI_MAX;
		1410	next_pri = nice + PRI_BIAS;
1059		1411
1060	void	1412	void
1061	flush ()	1413	flush ()
1062	PROTOTYPE:	1414	PROTOTYPE:
1063	CODE:	1415	CODE:
1064	while (nreqs)	1416	while (nreqs)
1065	{	1417	{
1066	poll_wait ();	1418	poll_wait ();
1067	poll_cb ();	1419	poll_cb (0);
1068	}	1420	}
1069		1421
1070	void	1422	void
1071	poll()	1423	poll()
1072	PROTOTYPE:	1424	PROTOTYPE:
1073	CODE:	1425	CODE:
1074	if (nreqs)	1426	if (nreqs)
1075	{	1427	{
1076	poll_wait ();	1428	poll_wait ();
1077	poll_cb ();	1429	poll_cb (0);
1078	}	1430	}
1079		1431
1080	int	1432	int
1081	poll_fileno()	1433	poll_fileno()
1082	PROTOTYPE:	1434	PROTOTYPE:
…		…
1087		1439
1088	int	1440	int
1089	poll_cb(...)	1441	poll_cb(...)
1090	PROTOTYPE:	1442	PROTOTYPE:
1091	CODE:	1443	CODE:
1092	RETVAL = poll_cb ();	1444	RETVAL = poll_cb (0);
		1445	OUTPUT:
		1446	RETVAL
		1447
		1448	int
		1449	poll_some(int max = 0)
		1450	PROTOTYPE: $
		1451	CODE:
		1452	RETVAL = poll_cb (max);
1093	OUTPUT:	1453	OUTPUT:
1094	RETVAL	1454	RETVAL
1095		1455
1096	void	1456	void
1097	poll_wait()	1457	poll_wait()
…		…
1106	CODE:	1466	CODE:
1107	RETVAL = nreqs;	1467	RETVAL = nreqs;
1108	OUTPUT:	1468	OUTPUT:
1109	RETVAL	1469	RETVAL
1110		1470
		1471	PROTOTYPES: DISABLE
		1472
		1473	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1474
		1475	void
		1476	cancel (aio_req_ornot req)
		1477	CODE:
		1478	req_cancel (req);
		1479
		1480	void
		1481	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1482	CODE:
		1483	SvREFCNT_dec (req->callback);
		1484	req->callback = newSVsv (callback);
		1485
		1486	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1487
		1488	void
		1489	add (aio_req grp, ...)
		1490	PPCODE:
		1491	{
		1492	int i;
		1493	aio_req req;
		1494
		1495	if (grp->fd == 2)
		1496	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1497
		1498	for (i = 1; i < items; ++i )
		1499	{
		1500	if (GIMME_V != G_VOID)
		1501	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1502
		1503	req = SvAIO_REQ (ST (i));
		1504
		1505	if (req)
		1506	{
		1507	++grp->length;
		1508	req->grp = grp;
		1509
		1510	req->grp_prev = 0;
		1511	req->grp_next = grp->grp_first;
		1512
		1513	if (grp->grp_first)
		1514	grp->grp_first->grp_prev = req;
		1515
		1516	grp->grp_first = req;
		1517	}
		1518	}
		1519	}
		1520
		1521	void
		1522	cancel_subs (aio_req_ornot req)
		1523	CODE:
		1524	req_cancel_subs (req);
		1525
		1526	void
		1527	result (aio_req grp, ...)
		1528	CODE:
		1529	{
		1530	int i;
		1531	AV *av = newAV ();
		1532
		1533	for (i = 1; i < items; ++i )
		1534	av_push (av, newSVsv (ST (i)));
		1535
		1536	SvREFCNT_dec (grp->data);
		1537	grp->data = (SV *)av;
		1538	}
		1539
		1540	void
		1541	limit (aio_req grp, int limit)
		1542	CODE:
		1543	grp->fd2 = limit;
		1544	aio_grp_feed (grp);
		1545
		1546	void
		1547	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1548	CODE:
		1549	{
		1550	SvREFCNT_dec (grp->fh2);
		1551	grp->fh2 = newSVsv (callback);
		1552
		1553	if (grp->fd2 <= 0)
		1554	grp->fd2 = 2;
		1555
		1556	aio_grp_feed (grp);
		1557	}
		1558

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