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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.38 by root, Sun Aug 28 10:51:33 2005 UTC vs.
Revision 1.72 by root, Tue Oct 24 17:22:17 2006 UTC

		1	/* solaris */
		2	#define _POSIX_PTHREAD_SEMANTICS 1
		3
		4	#if __linux
		5	# define _GNU_SOURCE
		6	#endif
		7
1	#define _REENTRANT 1	8	#define _REENTRANT 1
		9
2	#include <errno.h>	10	#include <errno.h>
3		11
4	#include "EXTERN.h"	12	#include "EXTERN.h"
5	#include "perl.h"	13	#include "perl.h"
6	#include "XSUB.h"	14	#include "XSUB.h"
…		…
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
12	#include <stddef.h>	20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
13	#include <sys/types.h>	24	#include <sys/types.h>
14	#include <sys/stat.h>	25	#include <sys/stat.h>
15	#include <limits.h>	26	#include <limits.h>
16	#include <unistd.h>	27	#include <unistd.h>
17	#include <fcntl.h>	28	#include <fcntl.h>
…		…
31	# else	42	# else
32	# error sendfile support requested but not available	43	# error sendfile support requested but not available
33	# endif	44	# endif
34	#endif	45	#endif
35		46
		47	/* used for struct dirent, AIX doesn't provide it */
		48	#ifndef NAME_MAX
		49	# define NAME_MAX 4096
		50	#endif
		51
36	#if __ia64	52	#if __ia64
37	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
38	#else	56	#else
39	# define STACKSIZE 8192	57	# define STACKSIZE 16384
40	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf; \
		65	LOCK (wrklock); \
		66	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
		67	UNLOCK (wrklock); \
		68	if (!aio_buf) \
		69	return -1;
41		70
42	enum {	71	enum {
43	REQ_QUIT,	72	REQ_QUIT,
44	REQ_OPEN, REQ_CLOSE,	73	REQ_OPEN, REQ_CLOSE,
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,	74	REQ_READ, REQ_WRITE, REQ_READAHEAD,
46	REQ_SENDFILE,	75	REQ_SENDFILE,
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	76	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
48	REQ_FSYNC, REQ_FDATASYNC,	77	REQ_FSYNC, REQ_FDATASYNC,
49	REQ_UNLINK, REQ_RMDIR,	78	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
50	REQ_READDIR,	79	REQ_READDIR,
51	REQ_SYMLINK,	80	REQ_LINK, REQ_SYMLINK,
		81	REQ_GROUP, REQ_NOP,
		82	REQ_BUSY,
52	};	83	};
53		84
		85	#define AIO_REQ_KLASS "IO::AIO::REQ"
		86	#define AIO_GRP_KLASS "IO::AIO::GRP"
		87
54	typedef struct aio_cb {	88	typedef struct aio_cb
		89	{
55	struct aio_cb *volatile next;	90	struct aio_cb *volatile next;
56		91
57	int type;	92	SV *data, *callback;
58		93	SV *fh, *fh2;
59	/* should receive a cleanup, with unions */	94	void *dataptr, *data2ptr;
60	int fd, fd2;	95	Stat_t *statdata;
61	off_t offset;	96	off_t offset;
62	size_t length;	97	size_t length;
63	ssize_t result;	98	ssize_t result;
		99
		100	STRLEN dataoffset;
		101	int type;
		102	int fd, fd2;
		103	int errorno;
64	mode_t mode; /* open */	104	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70		105
71	Stat_t *statdata;	106	unsigned char flags;
		107	unsigned char pri;
		108
		109	SV *self; /* the perl counterpart of this request, if any */
		110	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
72	} aio_cb;	111	} aio_cb;
73		112
		113	enum {
		114	FLAG_CANCELLED = 0x01,
		115	};
		116
74	typedef aio_cb *aio_req;	117	typedef aio_cb *aio_req;
		118	typedef aio_cb *aio_req_ornot;
		119
		120	enum {
		121	PRI_MIN = -4,
		122	PRI_MAX = 4,
		123
		124	DEFAULT_PRI = 0,
		125	PRI_BIAS = -PRI_MIN,
		126	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		127	};
		128
		129	static int next_pri = DEFAULT_PRI + PRI_BIAS;
75		130
76	static int started, wanted;	131	static int started, wanted;
77	static volatile int nreqs;	132	static volatile int nreqs;
78	static int max_outstanding = 1<<30;	133	static int max_outstanding = 1<<30;
79	static int respipe [2];	134	static int respipe [2];
80		135
		136	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		137	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		138	#else
		139	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		140	#endif
		141
		142	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
		143	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
		144
		145	/* worker threasd management */
		146	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;
		147
		148	typedef struct worker {
		149	/* locked by wrklock */
		150	struct worker *prev, *next;
		151
		152	pthread_t tid;
		153
		154	/* locked by reslock, reqlock or wrklock */
		155	aio_req req; /* currently processed request */
		156	void *dbuf;
		157	DIR *dirp;
		158	} worker;
		159
		160	static worker wrk_first = { &wrk_first, &wrk_first, 0 };
		161
		162	static void worker_clear (worker *wrk)
		163	{
		164	if (wrk->dirp)
		165	{
		166	closedir (wrk->dirp);
		167	wrk->dirp = 0;
		168	}
		169
		170	if (wrk->dbuf)
		171	{
		172	free (wrk->dbuf);
		173	wrk->dbuf = 0;
		174	}
		175	}
		176
		177	static void worker_free (worker *wrk)
		178	{
		179	wrk->next->prev = wrk->prev;
		180	wrk->prev->next = wrk->next;
		181
		182	free (wrk);
		183	}
		184
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	185	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	186	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	187	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84		188
85	static volatile aio_req reqs, reqe; /* queue start, queue end */	189	/*
86	static volatile aio_req ress, rese; /* queue start, queue end */	190	* a somewhat faster data structure might be nice, but
		191	* with 8 priorities this actually needs <20 insns
		192	* per shift, the most expensive operation.
		193	*/
		194	typedef struct {
		195	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		196	int size;
		197	} reqq;
87		198
		199	static reqq req_queue;
		200	static reqq res_queue;
		201
		202	int reqq_push (reqq *q, aio_req req)
		203	{
		204	int pri = req->pri;
		205	req->next = 0;
		206
		207	if (q->qe[pri])
		208	{
		209	q->qe[pri]->next = req;
		210	q->qe[pri] = req;
		211	}
		212	else
		213	q->qe[pri] = q->qs[pri] = req;
		214
		215	return q->size++;
		216	}
		217
		218	aio_req reqq_shift (reqq *q)
		219	{
		220	int pri;
		221
		222	if (!q->size)
		223	return 0;
		224
		225	--q->size;
		226
		227	for (pri = NUM_PRI; pri--; )
		228	{
		229	aio_req req = q->qs[pri];
		230
		231	if (req)
		232	{
		233	if (!(q->qs[pri] = req->next))
		234	q->qe[pri] = 0;
		235
		236	return req;
		237	}
		238	}
		239
		240	abort ();
		241	}
		242
		243	static void req_invoke (aio_req req);
88	static void free_req (aio_req req)	244	static void req_free (aio_req req);
89	{	245	static void req_cancel (aio_req req);
90	if (req->data)
91	SvREFCNT_dec (req->data);
92		246
		247	/* must be called at most once */
		248	static SV *req_sv (aio_req req, const char *klass)
		249	{
93	if (req->fh)	250	if (!req->self)
94	SvREFCNT_dec (req->fh);	251	{
		252	req->self = (SV *)newHV ();
		253	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		254	}
95		255
96	if (req->fh2)	256	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		257	}
		258
		259	static aio_req SvAIO_REQ (SV *sv)
		260	{
		261	MAGIC *mg;
		262
		263	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		264	croak ("object of class " AIO_REQ_KLASS " expected");
		265
		266	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		267
		268	return mg ? (aio_req)mg->mg_ptr : 0;
		269	}
		270
		271	static void aio_grp_feed (aio_req grp)
		272	{
		273	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		274	{
		275	int old_len = grp->length;
		276
		277	if (grp->fh2 && SvOK (grp->fh2))
		278	{
		279	dSP;
		280
		281	ENTER;
		282	SAVETMPS;
		283	PUSHMARK (SP);
		284	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		285	PUTBACK;
		286	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		287	SPAGAIN;
		288	FREETMPS;
		289	LEAVE;
		290	}
		291
		292	/* stop if no progress has been made */
		293	if (old_len == grp->length)
		294	{
97	SvREFCNT_dec (req->fh2);	295	SvREFCNT_dec (grp->fh2);
98		296	grp->fh2 = 0;
99	if (req->statdata)	297	break;
100	Safefree (req->statdata);	298	}
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);
104
105	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);
107
108	Safefree (req);
109	}
110
111	static void
112	poll_wait ()
113	{
114	if (nreqs && !ress)
115	{	299	}
		300	}
		301
		302	static void aio_grp_dec (aio_req grp)
		303	{
		304	--grp->length;
		305
		306	/* call feeder, if applicable */
		307	aio_grp_feed (grp);
		308
		309	/* finish, if done */
		310	if (!grp->length && grp->fd)
		311	{
		312	req_invoke (grp);
		313	req_free (grp);
		314	}
		315	}
		316
		317	static void poll_wait ()
		318	{
116	fd_set rfd;	319	fd_set rfd;
		320
		321	while (nreqs)
		322	{
		323	int size;
		324	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		325	LOCK (reslock);
		326	#endif
		327	size = res_queue.size;
		328	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
		329	UNLOCK (reslock);
		330	#endif
		331
		332	if (size)
		333	return;
		334
117	FD_ZERO(&rfd);	335	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);	336	FD_SET(respipe [0], &rfd);
119		337
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	338	select (respipe [0] + 1, &rfd, 0, 0, 0);
121	}	339	}
122	}	340	}
123		341
124	static int	342	static void req_invoke (aio_req req)
125	poll_cb ()	343	{
		344	dSP;
		345
		346	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		347	{
		348	errno = req->errorno;
		349
		350	ENTER;
		351	SAVETMPS;
		352	PUSHMARK (SP);
		353	EXTEND (SP, 1);
		354
		355	switch (req->type)
		356	{
		357	case REQ_READDIR:
		358	{
		359	SV *rv = &PL_sv_undef;
		360
		361	if (req->result >= 0)
		362	{
		363	int i;
		364	char *buf = req->data2ptr;
		365	AV *av = newAV ();
		366
		367	av_extend (av, req->result - 1);
		368
		369	for (i = 0; i < req->result; ++i)
		370	{
		371	SV *sv = newSVpv (buf, 0);
		372
		373	av_store (av, i, sv);
		374	buf += SvCUR (sv) + 1;
		375	}
		376
		377	rv = sv_2mortal (newRV_noinc ((SV *)av));
		378	}
		379
		380	PUSHs (rv);
		381	}
		382	break;
		383
		384	case REQ_OPEN:
		385	{
		386	/* convert fd to fh */
		387	SV *fh;
		388
		389	PUSHs (sv_2mortal (newSViv (req->result)));
		390	PUTBACK;
		391	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		392	SPAGAIN;
		393
		394	fh = SvREFCNT_inc (POPs);
		395
		396	PUSHMARK (SP);
		397	XPUSHs (sv_2mortal (fh));
		398	}
		399	break;
		400
		401	case REQ_GROUP:
		402	req->fd = 2; /* mark group as finished */
		403
		404	if (req->data)
		405	{
		406	int i;
		407	AV *av = (AV *)req->data;
		408
		409	EXTEND (SP, AvFILL (av) + 1);
		410	for (i = 0; i <= AvFILL (av); ++i)
		411	PUSHs (*av_fetch (av, i, 0));
		412	}
		413	break;
		414
		415	case REQ_NOP:
		416	case REQ_BUSY:
		417	break;
		418
		419	default:
		420	PUSHs (sv_2mortal (newSViv (req->result)));
		421	break;
		422	}
		423
		424
		425	PUTBACK;
		426	call_sv (req->callback, G_VOID | G_EVAL);
		427	SPAGAIN;
		428
		429	FREETMPS;
		430	LEAVE;
		431	}
		432
		433	if (req->grp)
		434	{
		435	aio_req grp = req->grp;
		436
		437	/* unlink request */
		438	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		439	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		440
		441	if (grp->grp_first == req)
		442	grp->grp_first = req->grp_next;
		443
		444	aio_grp_dec (grp);
		445	}
		446
		447	if (SvTRUE (ERRSV))
		448	{
		449	req_free (req);
		450	croak (0);
		451	}
		452	}
		453
		454	static void req_free (aio_req req)
		455	{
		456	if (req->self)
		457	{
		458	sv_unmagic (req->self, PERL_MAGIC_ext);
		459	SvREFCNT_dec (req->self);
		460	}
		461
		462	SvREFCNT_dec (req->data);
		463	SvREFCNT_dec (req->fh);
		464	SvREFCNT_dec (req->fh2);
		465	SvREFCNT_dec (req->callback);
		466	Safefree (req->statdata);
		467
		468	if (req->type == REQ_READDIR)
		469	free (req->data2ptr);
		470
		471	Safefree (req);
		472	}
		473
		474	static void req_cancel_subs (aio_req grp)
		475	{
		476	aio_req sub;
		477
		478	if (grp->type != REQ_GROUP)
		479	return;
		480
		481	SvREFCNT_dec (grp->fh2);
		482	grp->fh2 = 0;
		483
		484	for (sub = grp->grp_first; sub; sub = sub->grp_next)
		485	req_cancel (sub);
		486	}
		487
		488	static void req_cancel (aio_req req)
		489	{
		490	req->flags |= FLAG_CANCELLED;
		491
		492	req_cancel_subs (req);
		493	}
		494
		495	static int poll_cb ()
126	{	496	{
127	dSP;	497	dSP;
128	int count = 0;	498	int count = 0;
129	int do_croak = 0;	499	int do_croak = 0;
130	aio_req req;	500	aio_req req;
131		501
132	for (;;)	502	for (;;)
133	{	503	{
134	pthread_mutex_lock (&reslock);	504	LOCK (reslock);
135	req = ress;	505	req = reqq_shift (&res_queue);
136		506
137	if (req)	507	if (req)
138	{	508	{
139	ress = req->next;
140
141	if (!ress)	509	if (!res_queue.size)
142	{	510	{
143	/* read any signals sent by the worker threads */	511	/* read any signals sent by the worker threads */
144	char buf [32];	512	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)	513	while (read (respipe [0], buf, 32) == 32)
146	;	514	;
147
148	rese = 0;
149	}	515	}
150	}	516	}
151		517
152	pthread_mutex_unlock (&reslock);	518	UNLOCK (reslock);
153		519
154	if (!req)	520	if (!req)
155	break;	521	break;
156		522
157	nreqs--;	523	--nreqs;
158		524
159	if (req->type == REQ_QUIT)	525	if (req->type == REQ_QUIT)
160	started--;	526	started--;
		527	else if (req->type == REQ_GROUP && req->length)
		528	{
		529	req->fd = 1; /* mark request as delayed */
		530	continue;
		531	}
161	else	532	else
162	{	533	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)	534	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	535	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168		536
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	537	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);	538	SvREADONLY_off (req->data);
…		…
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	542	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;	543	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);	544	PL_statcache = *(req->statdata);
177	}	545	}
178		546
179	ENTER;	547	req_invoke (req);
180	PUSHMARK (SP);
181		548
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}
205	else
206	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)
210	{
211	/* convert fd to fh */
212	SV *fh;
213
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}
223	}
224
225	if (SvOK (req->callback))
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID | G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);
234	croak (0);
235	}
236	}
237
238	LEAVE;
239
240	errno = errorno;
241	count++;	549	count++;
242	}	550	}
243		551
244	free_req (req);	552	req_free (req);
245	}	553	}
246		554
247	return count;	555	return count;
248	}	556	}
249		557
250	static void *aio_proc(void *arg);	558	static void *aio_proc(void *arg);
251		559
252	static void
253	start_thread (void)	560	static void start_thread (void)
254	{	561	{
		562	worker *wrk = calloc (1, sizeof (worker));
		563
		564	if (!wrk)
		565	croak ("unable to allocate worker thread data");
		566
255	sigset_t fullsigset, oldsigset;	567	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	pthread_attr_t attr;	568	pthread_attr_t attr;
258		569
259	pthread_attr_init (&attr);	570	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);	571	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);	572	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262		573
263	sigfillset (&fullsigset);	574	sigfillset (&fullsigset);
		575
		576	LOCK (wrklock);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);	577	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265		578
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)	579	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)
		580	{
		581	wrk->prev = &wrk_first;
		582	wrk->next = wrk_first.next;
		583	wrk_first.next->prev = wrk;
		584	wrk_first.next = wrk;
267	started++;	585	started++;
		586	}
		587	else
		588	free (wrk);
268		589
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);	590	sigprocmask (SIG_SETMASK, &oldsigset, 0);
		591	UNLOCK (wrklock);
270	}	592	}
271		593
272	static void	594	static void req_send (aio_req req)
273	send_req (aio_req req)
274	{	595	{
275	while (started < wanted && nreqs >= started)	596	while (started < wanted && nreqs >= started)
276	start_thread ();	597	start_thread ();
277		598
278	nreqs++;	599	++nreqs;
279		600
280	pthread_mutex_lock (&reqlock);	601	LOCK (reqlock);
281		602	reqq_push (&req_queue, req);
282	req->next = 0;
283
284	if (reqe)
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);	603	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);	604	UNLOCK (reqlock);
294		605
295	if (nreqs > max_outstanding)	606	if (nreqs > max_outstanding)
296	for (;;)	607	for (;;)
297	{	608	{
298	poll_cb ();	609	poll_cb ();
…		…
302		613
303	poll_wait ();	614	poll_wait ();
304	}	615	}
305	}	616	}
306		617
307	static void	618	static void end_thread (void)
308	end_thread (void)
309	{	619	{
310	aio_req req;	620	aio_req req;
		621
311	Newz (0, req, 1, aio_cb);	622	Newz (0, req, 1, aio_cb);
		623
312	req->type = REQ_QUIT;	624	req->type = REQ_QUIT;
		625	req->pri = PRI_MAX + PRI_BIAS;
313		626
314	send_req (req);	627	req_send (req);
315	}	628	}
316		629
317	static void min_parallel (int nthreads)	630	static void min_parallel (int nthreads)
318	{	631	{
319	if (wanted < nthreads)	632	if (wanted < nthreads)
…		…
364	* normal read/write by using a mutex. slows down execution a lot,	677	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.	678	* but that's your problem, not mine.
366	*/	679	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	680	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368		681
369	static ssize_t	682	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{	683	{
372	ssize_t res;	684	ssize_t res;
373	off_t ooffset;	685	off_t ooffset;
374		686
375	pthread_mutex_lock (&preadwritelock);	687	LOCK (preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);	688	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);	689	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);	690	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);	691	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);	692	UNLOCK (preadwritelock);
381		693
382	return res;	694	return res;
383	}	695	}
384		696
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)	697	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
387	{	698	{
388	ssize_t res;	699	ssize_t res;
389	off_t ooffset;	700	off_t ooffset;
390		701
391	pthread_mutex_lock (&preadwritelock);	702	LOCK (preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);	703	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);	704	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);	705	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);	706	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);	707	UNLOCK (preadwritelock);
397		708
398	return res;	709	return res;
399	}	710	}
400	#endif	711	#endif
401		712
…		…
404	#endif	715	#endif
405		716
406	#if !HAVE_READAHEAD	717	#if !HAVE_READAHEAD
407	# define readahead aio_readahead	718	# define readahead aio_readahead
408		719
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)	720	static ssize_t readahead (int fd, off_t offset, size_t count)
411	{	721	{
412	char readahead_buf[4096];	722	dBUF;
413		723
414	while (count > 0)	724	while (count > 0)
415	{	725	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	726	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
417		727
418	pread (fd, readahead_buf, len, offset);	728	pread (fd, aio_buf, len, offset);
419	offset += len;	729	offset += len;
420	count -= len;	730	count -= len;
421	}	731	}
422		732
423	errno = 0;	733	errno = 0;
…		…
427	#if !HAVE_READDIR_R	737	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r	738	# define readdir_r aio_readdir_r
429		739
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	740	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431		741
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	742	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{	743	{
435	struct dirent *e;	744	struct dirent *e;
436	int errorno;	745	int errorno;
437		746
438	pthread_mutex_lock (&readdirlock);	747	LOCK (readdirlock);
439		748
440	e = readdir (dirp);	749	e = readdir (dirp);
441	errorno = errno;	750	errorno = errno;
442		751
443	if (e)	752	if (e)
…		…
446	strcpy (ent->d_name, e->d_name);	755	strcpy (ent->d_name, e->d_name);
447	}	756	}
448	else	757	else
449	*res = 0;	758	*res = 0;
450		759
451	pthread_mutex_unlock (&readdirlock);	760	UNLOCK (readdirlock);
452		761
453	errno = errorno;	762	errno = errorno;
454	return e ? 0 : -1;	763	return e ? 0 : -1;
455	}	764	}
456	#endif	765	#endif
457		766
458	/* sendfile always needs emulation */	767	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	768	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count, worker *self)
461	{	769	{
462	ssize_t res;	770	ssize_t res;
463		771
464	if (!count)	772	if (!count)
465	return 0;	773	return 0;
…		…
514	#endif	822	#endif
515	)	823	)
516	)	824	)
517	{	825	{
518	/* emulate sendfile. this is a major pain in the ass */	826	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];	827	dBUF;
		828
520	res = 0;	829	res = 0;
521		830
522	while (count)	831	while (count)
523	{	832	{
524	ssize_t cnt;	833	ssize_t cnt;
525		834
526	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);	835	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
527		836
528	if (cnt <= 0)	837	if (cnt <= 0)
529	{	838	{
530	if (cnt && !res) res = -1;	839	if (cnt && !res) res = -1;
531	break;	840	break;
532	}	841	}
533		842
534	cnt = write (ofd, buf, cnt);	843	cnt = write (ofd, aio_buf, cnt);
535		844
536	if (cnt <= 0)	845	if (cnt <= 0)
537	{	846	{
538	if (cnt && !res) res = -1;	847	if (cnt && !res) res = -1;
539	break;	848	break;
…		…
547		856
548	return res;	857	return res;
549	}	858	}
550		859
551	/* read a full directory */	860	/* read a full directory */
552	static int	861	static void scandir_ (aio_req req, worker *self)
553	scandir_ (const char *path, void **namesp)
554	{	862	{
555	DIR *dirp = opendir (path);	863	DIR *dirp;
556	union	864	union
557	{	865	{
558	struct dirent d;	866	struct dirent d;
559	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	867	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
560	} u;	868	} *u;
561	struct dirent *entp;	869	struct dirent *entp;
562	char *name, *names;	870	char *name, *names;
563	int memlen = 4096;	871	int memlen = 4096;
564	int memofs = 0;	872	int memofs = 0;
565	int res = 0;	873	int res = 0;
566	int errorno;	874	int errorno;
567		875
568	if (!dirp)	876	LOCK (wrklock);
569	return -1;	877	self->dirp = dirp = opendir (req->dataptr);
		878	self->dbuf = u = malloc (sizeof (*u));
		879	UNLOCK (wrklock);
570		880
571	names = malloc (memlen);	881	req->data2ptr = names = malloc (memlen);
572		882
		883	if (dirp && u && names)
573	for (;;)	884	for (;;)
574	{	885	{
		886	errno = 0;
575	errno = 0, readdir_r (dirp, &u.d, &entp);	887	readdir_r (dirp, &u->d, &entp);
576		888
577	if (!entp)	889	if (!entp)
578	break;	890	break;
579		891
580	name = entp->d_name;	892	name = entp->d_name;
581		893
582	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))	894	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
583	{	895	{
584	int len = strlen (name) + 1;	896	int len = strlen (name) + 1;
585		897
586	res++;	898	res++;
587		899
588	while (memofs + len > memlen)	900	while (memofs + len > memlen)
589	{	901	{
590	memlen *= 2;	902	memlen *= 2;
		903	LOCK (wrklock);
591	names = realloc (names, memlen);	904	req->data2ptr = names = realloc (names, memlen);
		905	UNLOCK (wrklock);
		906
592	if (!names)	907	if (!names)
593	break;	908	break;
594	}	909	}
595		910
596	memcpy (names + memofs, name, len);	911	memcpy (names + memofs, name, len);
597	memofs += len;	912	memofs += len;
598	}	913	}
599	}	914	}
600		915
601	errorno = errno;
602	closedir (dirp);
603
604	if (errorno)	916	if (errno)
605	{
606	free (names);
607	errno = errorno;
608	res = -1;	917	res = -1;
609	}	918
610		919	req->result = res;
611	*namesp = (void *)names;
612	return res;
613	}	920	}
614		921
615	/*****************************************************************************/	922	/*****************************************************************************/
616		923
617	static void *
618	aio_proc (void *thr_arg)	924	static void *aio_proc (void *thr_arg)
619	{	925	{
620	aio_req req;	926	aio_req req;
621	int type;	927	int type;
		928	worker *self = (worker *)thr_arg;
622		929
623	do	930	do
624	{	931	{
625	pthread_mutex_lock (&reqlock);	932	LOCK (reqlock);
626		933
627	for (;;)	934	for (;;)
628	{	935	{
629	req = reqs;	936	self->req = req = reqq_shift (&req_queue);
630
631	if (reqs)
632	{
633	reqs = reqs->next;
634	if (!reqs) reqe = 0;
635	}
636		937
637	if (req)	938	if (req)
638	break;	939	break;
639		940
640	pthread_cond_wait (&reqwait, &reqlock);	941	pthread_cond_wait (&reqwait, &reqlock);
641	}	942	}
642		943
643	pthread_mutex_unlock (&reqlock);	944	UNLOCK (reqlock);
644		945
645	errno = 0; /* strictly unnecessary */	946	errno = 0; /* strictly unnecessary */
		947	type = req->type; /* remember type for QUIT check */
646		948
647	type = req->type;	949	if (!(req->flags & FLAG_CANCELLED))
648
649	switch (type)	950	switch (type)
650	{	951	{
651	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	952	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
652	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	953	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
653		954
654	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	955	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
655	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	956	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;
656		957
657	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	958	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
658	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	959	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
659	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	960	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
660		961
661	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	962	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
662	case REQ_CLOSE: req->result = close (req->fd); break;	963	case REQ_CLOSE: req->result = close (req->fd); break;
663	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	964	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
664	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	965	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		966	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		967	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
665	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	968	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
666		969
667	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	970	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
668	case REQ_FSYNC: req->result = fsync (req->fd); break;	971	case REQ_FSYNC: req->result = fsync (req->fd); break;
669	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;	972	case REQ_READDIR: scandir_ (req, self); break;
670		973
		974	case REQ_BUSY:
		975	{
		976	struct timeval tv;
		977
		978	tv.tv_sec = req->fd;
		979	tv.tv_usec = req->fd2;
		980
		981	req->result = select (0, 0, 0, 0, &tv);
		982	}
		983
		984	case REQ_GROUP:
		985	case REQ_NOP:
671	case REQ_QUIT:	986	case REQ_QUIT:
672	break;	987	break;
673		988
674	default:	989	default:
675	req->result = ENOSYS;	990	req->result = ENOSYS;
676	break;	991	break;
677	}	992	}
678		993
679	req->errorno = errno;	994	req->errorno = errno;
680		995
681	pthread_mutex_lock (&reslock);	996	LOCK (reslock);
682		997
683	req->next = 0;	998	if (!reqq_push (&res_queue, req))
684
685	if (rese)
686	{
687	rese->next = req;
688	rese = req;
689	}
690	else
691	{
692	rese = ress = req;
693
694	/* write a dummy byte to the pipe so fh becomes ready */	999	/* write a dummy byte to the pipe so fh becomes ready */
695	write (respipe [1], &respipe, 1);	1000	write (respipe [1], &respipe, 1);
696	}
697		1001
698	pthread_mutex_unlock (&reslock);	1002	self->req = 0;
		1003	worker_clear (self);
		1004
		1005	UNLOCK (reslock);
699	}	1006	}
700	while (type != REQ_QUIT);	1007	while (type != REQ_QUIT);
701		1008
		1009	LOCK (wrklock);
		1010	worker_free (self);
		1011	UNLOCK (wrklock);
		1012
702	return 0;	1013	return 0;
703	}	1014	}
704		1015
705	/*****************************************************************************/	1016	/*****************************************************************************/
706		1017
707	static void atfork_prepare (void)	1018	static void atfork_prepare (void)
708	{	1019	{
709	pthread_mutex_lock (&reqlock);	1020	LOCK (wrklock);
710	pthread_mutex_lock (&reslock);	1021	LOCK (reqlock);
		1022	LOCK (reslock);
711	#if !HAVE_PREADWRITE	1023	#if !HAVE_PREADWRITE
712	pthread_mutex_lock (&preadwritelock);	1024	LOCK (preadwritelock);
713	#endif	1025	#endif
714	#if !HAVE_READDIR_R	1026	#if !HAVE_READDIR_R
715	pthread_mutex_lock (&readdirlock);	1027	LOCK (readdirlock);
716	#endif	1028	#endif
717	}	1029	}
718		1030
719	static void atfork_parent (void)	1031	static void atfork_parent (void)
720	{	1032	{
721	#if !HAVE_READDIR_R	1033	#if !HAVE_READDIR_R
722	pthread_mutex_unlock (&readdirlock);	1034	UNLOCK (readdirlock);
723	#endif	1035	#endif
724	#if !HAVE_PREADWRITE	1036	#if !HAVE_PREADWRITE
725	pthread_mutex_unlock (&preadwritelock);	1037	UNLOCK (preadwritelock);
726	#endif	1038	#endif
727	pthread_mutex_unlock (&reslock);	1039	UNLOCK (reslock);
728	pthread_mutex_unlock (&reqlock);	1040	UNLOCK (reqlock);
		1041	UNLOCK (wrklock);
729	}	1042	}
730		1043
731	static void atfork_child (void)	1044	static void atfork_child (void)
732	{	1045	{
733	aio_req prv;	1046	aio_req prv;
734		1047
		1048	while (prv = reqq_shift (&req_queue))
		1049	req_free (prv);
		1050
		1051	while (prv = reqq_shift (&res_queue))
		1052	req_free (prv);
		1053
		1054	while (wrk_first.next != &wrk_first)
		1055	{
		1056	worker *wrk = wrk_first.next;
		1057
		1058	if (wrk->req)
		1059	req_free (wrk->req);
		1060
		1061	worker_clear (wrk);
		1062	worker_free (wrk);
		1063	}
		1064
735	started = 0;	1065	started = 0;
736		1066	nreqs = 0;
737	while (reqs)
738	{
739	prv = reqs;
740	reqs = prv->next;
741	free_req (prv);
742	}
743
744	reqs = reqe = 0;
745
746	while (ress)
747	{
748	prv = ress;
749	ress = prv->next;
750	free_req (prv);
751	}
752
753	ress = rese = 0;
754		1067
755	close (respipe [0]);	1068	close (respipe [0]);
756	close (respipe [1]);	1069	close (respipe [1]);
757	create_pipe ();	1070	create_pipe ();
758		1071
759	atfork_parent ();	1072	atfork_parent ();
760	}	1073	}
761		1074
762	#define dREQ \	1075	#define dREQ \
763	aio_req req; \	1076	aio_req req; \
		1077	int req_pri = next_pri; \
		1078	next_pri = DEFAULT_PRI + PRI_BIAS; \
764	\	1079	\
765	if (SvOK (callback) && !SvROK (callback)) \	1080	if (SvOK (callback) && !SvROK (callback)) \
766	croak ("clalback must be undef or of reference type"); \	1081	croak ("callback must be undef or of reference type"); \
767	\	1082	\
768	Newz (0, req, 1, aio_cb); \	1083	Newz (0, req, 1, aio_cb); \
769	if (!req) \	1084	if (!req) \
770	croak ("out of memory during aio_req allocation"); \	1085	croak ("out of memory during aio_req allocation"); \
771	\	1086	\
772	req->callback = newSVsv (callback);	1087	req->callback = newSVsv (callback); \
		1088	req->pri = req_pri
		1089
		1090	#define REQ_SEND \
		1091	req_send (req); \
		1092	\
		1093	if (GIMME_V != G_VOID) \
		1094	XPUSHs (req_sv (req, AIO_REQ_KLASS));
773		1095
774	MODULE = IO::AIO PACKAGE = IO::AIO	1096	MODULE = IO::AIO PACKAGE = IO::AIO
775		1097
776	PROTOTYPES: ENABLE	1098	PROTOTYPES: ENABLE
777		1099
778	BOOT:	1100	BOOT:
779	{	1101	{
		1102	HV *stash = gv_stashpv ("IO::AIO", 1);
		1103	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1104	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1105	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1106
780	create_pipe ();	1107	create_pipe ();
781	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1108	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
782	}	1109	}
783		1110
784	void	1111	void
785	min_parallel(nthreads)	1112	min_parallel (nthreads)
786	int nthreads	1113	int nthreads
787	PROTOTYPE: $	1114	PROTOTYPE: $
788		1115
789	void	1116	void
790	max_parallel(nthreads)	1117	max_parallel (nthreads)
791	int nthreads	1118	int nthreads
792	PROTOTYPE: $	1119	PROTOTYPE: $
793		1120
794	int	1121	int
795	max_outstanding(nreqs)	1122	max_outstanding (nreqs)
796	int nreqs	1123	int nreqs
797	PROTOTYPE: $	1124	PROTOTYPE: $
798	CODE:	1125	CODE:
799	RETVAL = max_outstanding;	1126	RETVAL = max_outstanding;
800	max_outstanding = nreqs;	1127	max_outstanding = nreqs;
801		1128
802	void	1129	void
803	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1130	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
804	SV * pathname	1131	SV * pathname
805	int flags	1132	int flags
806	int mode	1133	int mode
807	SV * callback	1134	SV * callback
808	PROTOTYPE: $$$;$	1135	PROTOTYPE: $$$;$
809	CODE:	1136	PPCODE:
810	{	1137	{
811	dREQ;	1138	dREQ;
812		1139
813	req->type = REQ_OPEN;	1140	req->type = REQ_OPEN;
814	req->data = newSVsv (pathname);	1141	req->data = newSVsv (pathname);
815	req->dataptr = SvPVbyte_nolen (req->data);	1142	req->dataptr = SvPVbyte_nolen (req->data);
816	req->fd = flags;	1143	req->fd = flags;
817	req->mode = mode;	1144	req->mode = mode;
818		1145
819	send_req (req);	1146	REQ_SEND;
820	}	1147	}
821		1148
822	void	1149	void
823	aio_close(fh,callback=&PL_sv_undef)	1150	aio_close (fh,callback=&PL_sv_undef)
824	SV * fh	1151	SV * fh
825	SV * callback	1152	SV * callback
826	PROTOTYPE: $;$	1153	PROTOTYPE: $;$
827	ALIAS:	1154	ALIAS:
828	aio_close = REQ_CLOSE	1155	aio_close = REQ_CLOSE
829	aio_fsync = REQ_FSYNC	1156	aio_fsync = REQ_FSYNC
830	aio_fdatasync = REQ_FDATASYNC	1157	aio_fdatasync = REQ_FDATASYNC
831	CODE:	1158	PPCODE:
832	{	1159	{
833	dREQ;	1160	dREQ;
834		1161
835	req->type = ix;	1162	req->type = ix;
836	req->fh = newSVsv (fh);	1163	req->fh = newSVsv (fh);
837	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1164	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
838		1165
839	send_req (req);	1166	REQ_SEND (req);
840	}	1167	}
841		1168
842	void	1169	void
843	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1170	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
844	SV * fh	1171	SV * fh
845	UV offset	1172	UV offset
846	UV length	1173	UV length
847	SV * data	1174	SV * data
848	UV dataoffset	1175	UV dataoffset
849	SV * callback	1176	SV * callback
850	ALIAS:	1177	ALIAS:
851	aio_read = REQ_READ	1178	aio_read = REQ_READ
852	aio_write = REQ_WRITE	1179	aio_write = REQ_WRITE
853	PROTOTYPE: $$$$$;$	1180	PROTOTYPE: $$$$$;$
854	CODE:	1181	PPCODE:
855	{	1182	{
856	aio_req req;	1183	aio_req req;
857	STRLEN svlen;	1184	STRLEN svlen;
858	char *svptr = SvPVbyte (data, svlen);	1185	char *svptr = SvPVbyte (data, svlen);
859		1186
…		…
897	{	1224	{
898	SvREADONLY_on (data);	1225	SvREADONLY_on (data);
899	req->data2ptr = (void *)data;	1226	req->data2ptr = (void *)data;
900	}	1227	}
901		1228
902	send_req (req);	1229	REQ_SEND;
903	}	1230	}
904	}	1231	}
905		1232
906	void	1233	void
907	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1234	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
908	SV * out_fh	1235	SV * out_fh
909	SV * in_fh	1236	SV * in_fh
910	UV in_offset	1237	UV in_offset
911	UV length	1238	UV length
912	SV * callback	1239	SV * callback
913	PROTOTYPE: $$$$;$	1240	PROTOTYPE: $$$$;$
914	CODE:	1241	PPCODE:
915	{	1242	{
916	dREQ;	1243	dREQ;
917		1244
918	req->type = REQ_SENDFILE;	1245	req->type = REQ_SENDFILE;
919	req->fh = newSVsv (out_fh);	1246	req->fh = newSVsv (out_fh);
…		…
921	req->fh2 = newSVsv (in_fh);	1248	req->fh2 = newSVsv (in_fh);
922	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1249	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
923	req->offset = in_offset;	1250	req->offset = in_offset;
924	req->length = length;	1251	req->length = length;
925		1252
926	send_req (req);	1253	REQ_SEND;
927	}	1254	}
928		1255
929	void	1256	void
930	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1257	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
931	SV * fh	1258	SV * fh
932	UV offset	1259	UV offset
933	IV length	1260	IV length
934	SV * callback	1261	SV * callback
935	PROTOTYPE: $$$;$	1262	PROTOTYPE: $$$;$
936	CODE:	1263	PPCODE:
937	{	1264	{
938	dREQ;	1265	dREQ;
939		1266
940	req->type = REQ_READAHEAD;	1267	req->type = REQ_READAHEAD;
941	req->fh = newSVsv (fh);	1268	req->fh = newSVsv (fh);
942	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1269	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
943	req->offset = offset;	1270	req->offset = offset;
944	req->length = length;	1271	req->length = length;
945		1272
946	send_req (req);	1273	REQ_SEND;
947	}	1274	}
948		1275
949	void	1276	void
950	aio_stat(fh_or_path,callback=&PL_sv_undef)	1277	aio_stat (fh_or_path,callback=&PL_sv_undef)
951	SV * fh_or_path	1278	SV * fh_or_path
952	SV * callback	1279	SV * callback
953	ALIAS:	1280	ALIAS:
954	aio_stat = REQ_STAT	1281	aio_stat = REQ_STAT
955	aio_lstat = REQ_LSTAT	1282	aio_lstat = REQ_LSTAT
956	CODE:	1283	PPCODE:
957	{	1284	{
958	dREQ;	1285	dREQ;
959		1286
960	New (0, req->statdata, 1, Stat_t);	1287	New (0, req->statdata, 1, Stat_t);
961	if (!req->statdata)	1288	if (!req->statdata)
962	{	1289	{
963	free_req (req);	1290	req_free (req);
964	croak ("out of memory during aio_req->statdata allocation");	1291	croak ("out of memory during aio_req->statdata allocation");
965	}	1292	}
966		1293
967	if (SvPOK (fh_or_path))	1294	if (SvPOK (fh_or_path))
968	{	1295	{
…		…
975	req->type = REQ_FSTAT;	1302	req->type = REQ_FSTAT;
976	req->fh = newSVsv (fh_or_path);	1303	req->fh = newSVsv (fh_or_path);
977	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1304	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
978	}	1305	}
979		1306
980	send_req (req);	1307	REQ_SEND;
981	}	1308	}
982		1309
983	void	1310	void
984	aio_unlink(pathname,callback=&PL_sv_undef)	1311	aio_unlink (pathname,callback=&PL_sv_undef)
985	SV * pathname	1312	SV * pathname
986	SV * callback	1313	SV * callback
987	ALIAS:	1314	ALIAS:
988	aio_unlink = REQ_UNLINK	1315	aio_unlink = REQ_UNLINK
989	aio_rmdir = REQ_RMDIR	1316	aio_rmdir = REQ_RMDIR
		1317	aio_readdir = REQ_READDIR
990	CODE:	1318	PPCODE:
991	{	1319	{
992	dREQ;	1320	dREQ;
993		1321
994	req->type = ix;	1322	req->type = ix;
995	req->data = newSVsv (pathname);	1323	req->data = newSVsv (pathname);
996	req->dataptr = SvPVbyte_nolen (req->data);	1324	req->dataptr = SvPVbyte_nolen (req->data);
997		1325
998	send_req (req);	1326	REQ_SEND;
999	}	1327	}
1000		1328
1001	void	1329	void
1002	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1330	aio_link (oldpath,newpath,callback=&PL_sv_undef)
1003	SV * oldpath	1331	SV * oldpath
1004	SV * newpath	1332	SV * newpath
1005	SV * callback	1333	SV * callback
		1334	ALIAS:
		1335	aio_link = REQ_LINK
		1336	aio_symlink = REQ_SYMLINK
		1337	aio_rename = REQ_RENAME
1006	CODE:	1338	PPCODE:
1007	{	1339	{
1008	dREQ;	1340	dREQ;
1009		1341
1010	req->type = REQ_SYMLINK;	1342	req->type = ix;
1011	req->fh = newSVsv (oldpath);	1343	req->fh = newSVsv (oldpath);
1012	req->data2ptr = SvPVbyte_nolen (req->fh);	1344	req->data2ptr = SvPVbyte_nolen (req->fh);
1013	req->data = newSVsv (newpath);	1345	req->data = newSVsv (newpath);
1014	req->dataptr = SvPVbyte_nolen (req->data);	1346	req->dataptr = SvPVbyte_nolen (req->data);
1015		1347
1016	send_req (req);	1348	REQ_SEND;
1017	}	1349	}
1018		1350
1019	void	1351	void
1020	aio_readdir(pathname,callback=&PL_sv_undef)	1352	aio_busy (delay,callback=&PL_sv_undef)
1021	SV * pathname	1353	double delay
1022	SV * callback	1354	SV * callback
1023	CODE:	1355	PPCODE:
1024	{	1356	{
1025	dREQ;	1357	dREQ;
1026		1358
		1359	req->type = REQ_BUSY;
		1360	req->fd = delay < 0. ? 0 : delay;
		1361	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_group (callback=&PL_sv_undef)
		1368	SV * callback
		1369	PROTOTYPE: ;$
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
1027	req->type = REQ_READDIR;	1374	req->type = REQ_GROUP;
1028	req->data = newSVsv (pathname);	1375	req_send (req);
1029	req->dataptr = SvPVbyte_nolen (req->data);
1030
1031	send_req (req);
1032	}
1033		1376
		1377	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1378	}
		1379
1034	void	1380	void
		1381	aio_nop (callback=&PL_sv_undef)
		1382	SV * callback
		1383	PPCODE:
		1384	{
		1385	dREQ;
		1386
		1387	req->type = REQ_NOP;
		1388
		1389	REQ_SEND;
		1390	}
		1391
		1392	void
		1393	aioreq_pri (int pri = DEFAULT_PRI)
		1394	CODE:
		1395	if (pri < PRI_MIN) pri = PRI_MIN;
		1396	if (pri > PRI_MAX) pri = PRI_MAX;
		1397	next_pri = pri + PRI_BIAS;
		1398
		1399	void
		1400	aioreq_nice (int nice = 0)
		1401	CODE:
		1402	nice = next_pri - nice;
		1403	if (nice < PRI_MIN) nice = PRI_MIN;
		1404	if (nice > PRI_MAX) nice = PRI_MAX;
		1405	next_pri = nice + PRI_BIAS;
		1406
		1407	void
1035	flush()	1408	flush ()
1036	PROTOTYPE:	1409	PROTOTYPE:
1037	CODE:	1410	CODE:
1038	while (nreqs)	1411	while (nreqs)
1039	{	1412	{
1040	poll_wait ();	1413	poll_wait ();
…		…
1080	CODE:	1453	CODE:
1081	RETVAL = nreqs;	1454	RETVAL = nreqs;
1082	OUTPUT:	1455	OUTPUT:
1083	RETVAL	1456	RETVAL
1084		1457
		1458	PROTOTYPES: DISABLE
		1459
		1460	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1461
		1462	void
		1463	cancel (aio_req_ornot req)
		1464	CODE:
		1465	req_cancel (req);
		1466
		1467	void
		1468	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1469	CODE:
		1470	SvREFCNT_dec (req->callback);
		1471	req->callback = newSVsv (callback);
		1472
		1473	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1474
		1475	void
		1476	add (aio_req grp, ...)
		1477	PPCODE:
		1478	{
		1479	int i;
		1480	aio_req req;
		1481
		1482	if (grp->fd == 2)
		1483	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1484
		1485	for (i = 1; i < items; ++i )
		1486	{
		1487	if (GIMME_V != G_VOID)
		1488	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1489
		1490	req = SvAIO_REQ (ST (i));
		1491
		1492	if (req)
		1493	{
		1494	++grp->length;
		1495	req->grp = grp;
		1496
		1497	req->grp_prev = 0;
		1498	req->grp_next = grp->grp_first;
		1499
		1500	if (grp->grp_first)
		1501	grp->grp_first->grp_prev = req;
		1502
		1503	grp->grp_first = req;
		1504	}
		1505	}
		1506	}
		1507
		1508	void
		1509	cancel_subs (aio_req_ornot req)
		1510	CODE:
		1511	req_cancel_subs (req);
		1512
		1513	void
		1514	result (aio_req grp, ...)
		1515	CODE:
		1516	{
		1517	int i;
		1518	AV *av = newAV ();
		1519
		1520	for (i = 1; i < items; ++i )
		1521	av_push (av, newSVsv (ST (i)));
		1522
		1523	SvREFCNT_dec (grp->data);
		1524	grp->data = (SV *)av;
		1525	}
		1526
		1527	void
		1528	limit (aio_req grp, int limit)
		1529	CODE:
		1530	grp->fd2 = limit;
		1531	aio_grp_feed (grp);
		1532
		1533	void
		1534	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1535	CODE:
		1536	{
		1537	SvREFCNT_dec (grp->fh2);
		1538	grp->fh2 = newSVsv (callback);
		1539
		1540	if (grp->fd2 <= 0)
		1541	grp->fd2 = 2;
		1542
		1543	aio_grp_feed (grp);
		1544	}
		1545

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