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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.36 by root, Tue Aug 23 01:18:04 2005 UTC vs.
Revision 1.67 by root, Tue Oct 24 03:17:39 2006 UTC

		1	#if __linux
		2	# define _GNU_SOURCE
		3	#endif
		4
1	#define _REENTRANT 1	5	#define _REENTRANT 1
		6
2	#include <errno.h>	7	#include <errno.h>
3		8
4	#include "EXTERN.h"	9	#include "EXTERN.h"
5	#include "perl.h"	10	#include "perl.h"
6	#include "XSUB.h"	11	#include "XSUB.h"
7		12
8	#include "autoconf/config.h"	13	#include "autoconf/config.h"
9		14
10	#include <pthread.h>	15	#include <pthread.h>
11		16
		17	#include <stddef.h>
		18	#include <errno.h>
		19	#include <sys/time.h>
		20	#include <sys/select.h>
12	#include <sys/types.h>	21	#include <sys/types.h>
13	#include <sys/stat.h>	22	#include <sys/stat.h>
14		23	#include <limits.h>
15	#include <unistd.h>	24	#include <unistd.h>
16	#include <fcntl.h>	25	#include <fcntl.h>
17	#include <signal.h>	26	#include <signal.h>
18	#include <sched.h>	27	#include <sched.h>
19		28
…		…
30	# else	39	# else
31	# error sendfile support requested but not available	40	# error sendfile support requested but not available
32	# endif	41	# endif
33	#endif	42	#endif
34		43
		44	/* used for struct dirent, AIX doesn't provide it */
		45	#ifndef NAME_MAX
		46	# define NAME_MAX 4096
		47	#endif
		48
35	#if __ia64	49	#if __ia64
36	# define STACKSIZE 65536	50	# define STACKSIZE 65536
		51	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		52	# define STACKSIZE PTHREAD_STACK_MIN
37	#else	53	#else
38	# define STACKSIZE 4096	54	# define STACKSIZE 16384
39	#endif	55	#endif
		56
		57	/* buffer size for various temporary buffers */
		58	#define AIO_BUFSIZE 65536
		59
		60	#define dBUF \
		61	char *aio_buf = malloc (AIO_BUFSIZE); \
		62	if (!aio_buf) \
		63	return -1;
		64
		65	#define fBUF free (aio_buf)
40		66
41	enum {	67	enum {
42	REQ_QUIT,	68	REQ_QUIT,
43	REQ_OPEN, REQ_CLOSE,	69	REQ_OPEN, REQ_CLOSE,
44	REQ_READ, REQ_WRITE, REQ_READAHEAD,	70	REQ_READ, REQ_WRITE, REQ_READAHEAD,
45	REQ_SENDFILE,	71	REQ_SENDFILE,
46	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	72	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
47	REQ_FSYNC, REQ_FDATASYNC,	73	REQ_FSYNC, REQ_FDATASYNC,
48	REQ_UNLINK, REQ_RMDIR,	74	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
49	REQ_SYMLINK,	75	REQ_READDIR,
		76	REQ_LINK, REQ_SYMLINK,
		77	REQ_GROUP, REQ_NOP,
		78	REQ_SLEEP,
50	};	79	};
51		80
		81	#define AIO_REQ_KLASS "IO::AIO::REQ"
		82	#define AIO_GRP_KLASS "IO::AIO::GRP"
		83
52	typedef struct aio_cb {	84	typedef struct aio_cb
		85	{
53	struct aio_cb *volatile next;	86	struct aio_cb *volatile next;
54		87
55	int type;	88	SV *data, *callback;
56		89	SV *fh, *fh2;
57	int fd, fd2;	90	void *dataptr, *data2ptr;
		91	Stat_t *statdata;
58	off_t offset;	92	off_t offset;
59	size_t length;	93	size_t length;
60	ssize_t result;	94	ssize_t result;
		95
		96	STRLEN dataoffset;
		97	int type;
		98	int fd, fd2;
		99	int errorno;
61	mode_t mode; /* open */	100	mode_t mode; /* open */
62	int errorno;
63	SV *data, *callback;
64	SV *fh, *fh2;
65	void *dataptr, *data2ptr;
66	STRLEN dataoffset;
67		101
68	Stat_t *statdata;	102	unsigned char flags;
		103	unsigned char pri;
		104
		105	SV *self; /* the perl counterpart of this request, if any */
		106	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
69	} aio_cb;	107	} aio_cb;
70		108
		109	enum {
		110	FLAG_CANCELLED = 0x01,
		111	};
		112
71	typedef aio_cb *aio_req;	113	typedef aio_cb *aio_req;
		114	typedef aio_cb *aio_req_ornot;
		115
		116	enum {
		117	PRI_MIN = -4,
		118	PRI_MAX = 4,
		119
		120	DEFAULT_PRI = 0,
		121	PRI_BIAS = -PRI_MIN,
		122	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		123	};
		124
		125	static int next_pri = DEFAULT_PRI + PRI_BIAS;
72		126
73	static int started, wanted;	127	static int started, wanted;
74	static volatile int nreqs;	128	static volatile int nreqs;
75	static int max_outstanding = 1<<30;	129	static int max_outstanding = 1<<30;
76	static int respipe [2];	130	static int respipe [2];
77		131
		132	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		133	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		134	#else
		135	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		136	#endif
		137
78	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	138	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
79	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	139	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
80	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	140	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
81		141
82	static volatile aio_req reqs, reqe; /* queue start, queue end */	142	/*
83	static volatile aio_req ress, rese; /* queue start, queue end */	143	* a somewhat faster data structure might be nice, but
		144	* with 8 priorities this actually needs <20 insns
		145	* per shift, the most expensive operation.
		146	*/
		147	typedef struct {
		148	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		149	int size;
		150	} reqq;
84		151
		152	static reqq req_queue;
		153	static reqq res_queue;
		154
		155	int reqq_push (reqq *q, aio_req req)
		156	{
		157	int pri = req->pri;
		158	req->next = 0;
		159
		160	if (q->qe[pri])
		161	{
		162	q->qe[pri]->next = req;
		163	q->qe[pri] = req;
		164	}
		165	else
		166	q->qe[pri] = q->qs[pri] = req;
		167
		168	return q->size++;
		169	}
		170
		171	aio_req reqq_shift (reqq *q)
		172	{
		173	int pri;
		174
		175	if (!q->size)
		176	return 0;
		177
		178	--q->size;
		179
		180	for (pri = NUM_PRI; pri--; )
		181	{
		182	aio_req req = q->qs[pri];
		183
		184	if (req)
		185	{
		186	if (!(q->qs[pri] = req->next))
		187	q->qe[pri] = 0;
		188
		189	return req;
		190	}
		191	}
		192
		193	abort ();
		194	}
		195
		196	static void req_invoke (aio_req req);
85	static void free_req (aio_req req)	197	static void req_free (aio_req req);
86	{
87	if (req->data)
88	SvREFCNT_dec (req->data);
89		198
		199	/* must be called at most once */
		200	static SV *req_sv (aio_req req, const char *klass)
		201	{
90	if (req->fh)	202	if (!req->self)
91	SvREFCNT_dec (req->fh);	203	{
		204	req->self = (SV *)newHV ();
		205	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		206	}
92		207
93	if (req->fh2)	208	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		209	}
		210
		211	static aio_req SvAIO_REQ (SV *sv)
		212	{
		213	MAGIC *mg;
		214
		215	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		216	croak ("object of class " AIO_REQ_KLASS " expected");
		217
		218	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		219
		220	return mg ? (aio_req)mg->mg_ptr : 0;
		221	}
		222
		223	static void aio_grp_feed (aio_req grp)
		224	{
		225	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		226	{
		227	int old_len = grp->length;
		228
		229	if (grp->fh2 && SvOK (grp->fh2))
		230	{
		231	dSP;
		232
		233	ENTER;
		234	SAVETMPS;
		235	PUSHMARK (SP);
		236	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		237	PUTBACK;
		238	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		239	SPAGAIN;
		240	FREETMPS;
		241	LEAVE;
		242	}
		243
		244	/* stop if no progress has been made */
		245	if (old_len == grp->length)
		246	{
94	SvREFCNT_dec (req->fh2);	247	SvREFCNT_dec (grp->fh2);
95		248	grp->fh2 = 0;
96	if (req->statdata)	249	break;
97	Safefree (req->statdata);	250	}
98
99	if (req->callback)
100	SvREFCNT_dec (req->callback);
101
102	Safefree (req);
103	}
104
105	static void
106	poll_wait ()
107	{
108	if (nreqs && !ress)
109	{	251	}
		252	}
		253
		254	static void aio_grp_dec (aio_req grp)
		255	{
		256	--grp->length;
		257
		258	/* call feeder, if applicable */
		259	aio_grp_feed (grp);
		260
		261	/* finish, if done */
		262	if (!grp->length && grp->fd)
		263	{
		264	req_invoke (grp);
		265	req_free (grp);
		266	}
		267	}
		268
		269	static void poll_wait ()
		270	{
110	fd_set rfd;	271	fd_set rfd;
		272
		273	while (nreqs)
		274	{
		275	int size;
		276	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
		277	pthread_mutex_lock (&reslock);
		278	#endif
		279	size = res_queue.size;
		280	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
		281	pthread_mutex_unlock (&reslock);
		282	#endif
		283
		284	if (size)
		285	return;
		286
111	FD_ZERO(&rfd);	287	FD_ZERO(&rfd);
112	FD_SET(respipe [0], &rfd);	288	FD_SET(respipe [0], &rfd);
113		289
114	select (respipe [0] + 1, &rfd, 0, 0, 0);	290	select (respipe [0] + 1, &rfd, 0, 0, 0);
115	}	291	}
116	}	292	}
117		293
118	static int	294	static void req_invoke (aio_req req)
119	poll_cb ()	295	{
		296	dSP;
		297
		298	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		299	{
		300	errno = req->errorno;
		301
		302	ENTER;
		303	SAVETMPS;
		304	PUSHMARK (SP);
		305	EXTEND (SP, 1);
		306
		307	switch (req->type)
		308	{
		309	case REQ_READDIR:
		310	{
		311	SV *rv = &PL_sv_undef;
		312
		313	if (req->result >= 0)
		314	{
		315	char *buf = req->data2ptr;
		316	AV *av = newAV ();
		317
		318	while (req->result)
		319	{
		320	SV *sv = newSVpv (buf, 0);
		321
		322	av_push (av, sv);
		323	buf += SvCUR (sv) + 1;
		324	req->result--;
		325	}
		326
		327	rv = sv_2mortal (newRV_noinc ((SV *)av));
		328	}
		329
		330	PUSHs (rv);
		331	}
		332	break;
		333
		334	case REQ_OPEN:
		335	{
		336	/* convert fd to fh */
		337	SV *fh;
		338
		339	PUSHs (sv_2mortal (newSViv (req->result)));
		340	PUTBACK;
		341	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		342	SPAGAIN;
		343
		344	fh = SvREFCNT_inc (POPs);
		345
		346	PUSHMARK (SP);
		347	XPUSHs (sv_2mortal (fh));
		348	}
		349	break;
		350
		351	case REQ_GROUP:
		352	req->fd = 2; /* mark group as finished */
		353
		354	if (req->data)
		355	{
		356	int i;
		357	AV *av = (AV *)req->data;
		358
		359	EXTEND (SP, AvFILL (av) + 1);
		360	for (i = 0; i <= AvFILL (av); ++i)
		361	PUSHs (*av_fetch (av, i, 0));
		362	}
		363	break;
		364
		365	case REQ_NOP:
		366	case REQ_SLEEP:
		367	break;
		368
		369	default:
		370	PUSHs (sv_2mortal (newSViv (req->result)));
		371	break;
		372	}
		373
		374
		375	PUTBACK;
		376	call_sv (req->callback, G_VOID | G_EVAL);
		377	SPAGAIN;
		378
		379	FREETMPS;
		380	LEAVE;
		381	}
		382
		383	if (req->grp)
		384	{
		385	aio_req grp = req->grp;
		386
		387	/* unlink request */
		388	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		389	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		390
		391	if (grp->grp_first == req)
		392	grp->grp_first = req->grp_next;
		393
		394	aio_grp_dec (grp);
		395	}
		396
		397	if (SvTRUE (ERRSV))
		398	{
		399	req_free (req);
		400	croak (0);
		401	}
		402	}
		403
		404	static void req_free (aio_req req)
		405	{
		406	if (req->self)
		407	{
		408	sv_unmagic (req->self, PERL_MAGIC_ext);
		409	SvREFCNT_dec (req->self);
		410	}
		411
		412	SvREFCNT_dec (req->data);
		413	SvREFCNT_dec (req->fh);
		414	SvREFCNT_dec (req->fh2);
		415	SvREFCNT_dec (req->callback);
		416	Safefree (req->statdata);
		417
		418	if (req->type == REQ_READDIR && req->result >= 0)
		419	free (req->data2ptr);
		420
		421	Safefree (req);
		422	}
		423
		424	static void req_cancel (aio_req req)
		425	{
		426	req->flags |= FLAG_CANCELLED;
		427
		428	if (req->type == REQ_GROUP)
		429	{
		430	aio_req sub;
		431
		432	for (sub = req->grp_first; sub; sub = sub->grp_next)
		433	req_cancel (sub);
		434	}
		435	}
		436
		437	static int poll_cb ()
120	{	438	{
121	dSP;	439	dSP;
122	int count = 0;	440	int count = 0;
123	int do_croak = 0;	441	int do_croak = 0;
124	aio_req req;	442	aio_req req;
125		443
126	for (;;)	444	for (;;)
127	{	445	{
128	pthread_mutex_lock (&reslock);	446	pthread_mutex_lock (&reslock);
129	req = ress;	447	req = reqq_shift (&res_queue);
130		448
131	if (req)	449	if (req)
132	{	450	{
133	ress = req->next;
134
135	if (!ress)	451	if (!res_queue.size)
136	{	452	{
137	/* read any signals sent by the worker threads */	453	/* read any signals sent by the worker threads */
138	char buf [32];	454	char buf [32];
139	while (read (respipe [0], buf, 32) == 32)	455	while (read (respipe [0], buf, 32) == 32)
140	;	456	;
141
142	rese = 0;
143	}	457	}
144	}	458	}
145		459
146	pthread_mutex_unlock (&reslock);	460	pthread_mutex_unlock (&reslock);
147		461
148	if (!req)	462	if (!req)
149	break;	463	break;
150		464
151	nreqs--;	465	--nreqs;
152		466
153	if (req->type == REQ_QUIT)	467	if (req->type == REQ_QUIT)
154	started--;	468	started--;
		469	else if (req->type == REQ_GROUP && req->length)
		470	{
		471	req->fd = 1; /* mark request as delayed */
		472	continue;
		473	}
155	else	474	else
156	{	475	{
157	int errorno = errno;
158	errno = req->errorno;
159
160	if (req->type == REQ_READ)	476	if (req->type == REQ_READ)
161	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	477	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
162		478
163	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	479	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
164	SvREADONLY_off (req->data);	480	SvREADONLY_off (req->data);
…		…
168	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	484	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
169	PL_laststatval = req->result;	485	PL_laststatval = req->result;
170	PL_statcache = *(req->statdata);	486	PL_statcache = *(req->statdata);
171	}	487	}
172		488
173	ENTER;	489	req_invoke (req);
174	PUSHMARK (SP);
175	XPUSHs (sv_2mortal (newSViv (req->result)));
176		490
177	if (req->type == REQ_OPEN)
178	{
179	/* convert fd to fh */
180	SV *fh;
181
182	PUTBACK;
183	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
184	SPAGAIN;
185
186	fh = SvREFCNT_inc (POPs);
187
188	PUSHMARK (SP);
189	XPUSHs (sv_2mortal (fh));
190	}
191
192	if (SvOK (req->callback))
193	{
194	PUTBACK;
195	call_sv (req->callback, G_VOID | G_EVAL);
196	SPAGAIN;
197
198	if (SvTRUE (ERRSV))
199	{
200	free_req (req);
201	croak (0);
202	}
203	}
204
205	LEAVE;
206
207	errno = errorno;
208	count++;	491	count++;
209	}	492	}
210		493
211	free_req (req);	494	req_free (req);
212	}	495	}
213		496
214	return count;	497	return count;
215	}	498	}
216		499
217	static void *aio_proc(void *arg);	500	static void *aio_proc(void *arg);
218		501
219	static void
220	start_thread (void)	502	static void start_thread (void)
221	{	503	{
222	sigset_t fullsigset, oldsigset;	504	sigset_t fullsigset, oldsigset;
223	pthread_t tid;	505	pthread_t tid;
224	pthread_attr_t attr;	506	pthread_attr_t attr;
225		507
…		…
234	started++;	516	started++;
235		517
236	sigprocmask (SIG_SETMASK, &oldsigset, 0);	518	sigprocmask (SIG_SETMASK, &oldsigset, 0);
237	}	519	}
238		520
239	static void	521	static void req_send (aio_req req)
240	send_req (aio_req req)
241	{	522	{
242	while (started < wanted && nreqs >= started)	523	while (started < wanted && nreqs >= started)
243	start_thread ();	524	start_thread ();
244		525
245	nreqs++;	526	++nreqs;
246		527
247	pthread_mutex_lock (&reqlock);	528	pthread_mutex_lock (&reqlock);
248		529	reqq_push (&req_queue, req);
249	req->next = 0;
250
251	if (reqe)
252	{
253	reqe->next = req;
254	reqe = req;
255	}
256	else
257	reqe = reqs = req;
258
259	pthread_cond_signal (&reqwait);	530	pthread_cond_signal (&reqwait);
260	pthread_mutex_unlock (&reqlock);	531	pthread_mutex_unlock (&reqlock);
261		532
262	if (nreqs > max_outstanding)	533	if (nreqs > max_outstanding)
263	for (;;)	534	for (;;)
…		…
269		540
270	poll_wait ();	541	poll_wait ();
271	}	542	}
272	}	543	}
273		544
274	static void	545	static void end_thread (void)
275	end_thread (void)
276	{	546	{
277	aio_req req;	547	aio_req req;
		548
278	Newz (0, req, 1, aio_cb);	549	Newz (0, req, 1, aio_cb);
		550
279	req->type = REQ_QUIT;	551	req->type = REQ_QUIT;
		552	req->pri = PRI_MAX + PRI_BIAS;
280		553
281	send_req (req);	554	req_send (req);
282	}	555	}
283		556
284	static void min_parallel (int nthreads)	557	static void min_parallel (int nthreads)
285	{	558	{
286	if (wanted < nthreads)	559	if (wanted < nthreads)
…		…
315	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	588	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
316	croak ("cannot set result pipe to nonblocking mode");	589	croak ("cannot set result pipe to nonblocking mode");
317		590
318	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	591	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
319	croak ("cannot set result pipe to nonblocking mode");	592	croak ("cannot set result pipe to nonblocking mode");
320	}
321
322	static void atfork_prepare (void)
323	{
324	pthread_mutex_lock (&reqlock);
325	pthread_mutex_lock (&reslock);
326	}
327
328	static void atfork_parent (void)
329	{
330	pthread_mutex_unlock (&reslock);
331	pthread_mutex_unlock (&reqlock);
332	}
333
334	static void atfork_child (void)
335	{
336	aio_req prv;
337
338	started = 0;
339
340	while (reqs)
341	{
342	prv = reqs;
343	reqs = prv->next;
344	free_req (prv);
345	}
346
347	reqs = reqe = 0;
348
349	while (ress)
350	{
351	prv = ress;
352	ress = prv->next;
353	free_req (prv);
354	}
355
356	ress = rese = 0;
357
358	close (respipe [0]);
359	close (respipe [1]);
360	create_pipe ();
361
362	atfork_parent ();
363	}	593	}
364		594
365	/*****************************************************************************/	595	/*****************************************************************************/
366	/* work around various missing functions */	596	/* work around various missing functions */
367		597
…		…
372	/*	602	/*
373	* make our pread/pwrite safe against themselves, but not against	603	* make our pread/pwrite safe against themselves, but not against
374	* normal read/write by using a mutex. slows down execution a lot,	604	* normal read/write by using a mutex. slows down execution a lot,
375	* but that's your problem, not mine.	605	* but that's your problem, not mine.
376	*/	606	*/
377	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	607	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
378		608
379	static ssize_t	609	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
380	pread (int fd, void *buf, size_t count, off_t offset)
381	{	610	{
382	ssize_t res;	611	ssize_t res;
383	off_t ooffset;	612	off_t ooffset;
384		613
385	pthread_mutex_lock (&iolock);	614	pthread_mutex_lock (&preadwritelock);
386	ooffset = lseek (fd, 0, SEEK_CUR);	615	ooffset = lseek (fd, 0, SEEK_CUR);
387	lseek (fd, offset, SEEK_SET);	616	lseek (fd, offset, SEEK_SET);
388	res = read (fd, buf, count);	617	res = read (fd, buf, count);
389	lseek (fd, ooffset, SEEK_SET);	618	lseek (fd, ooffset, SEEK_SET);
390	pthread_mutex_unlock (&iolock);	619	pthread_mutex_unlock (&preadwritelock);
391		620
392	return res;	621	return res;
393	}	622	}
394		623
395	static ssize_t
396	pwrite (int fd, void *buf, size_t count, off_t offset)	624	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
397	{	625	{
398	ssize_t res;	626	ssize_t res;
399	off_t ooffset;	627	off_t ooffset;
400		628
401	pthread_mutex_lock (&iolock);	629	pthread_mutex_lock (&preadwritelock);
402	ooffset = lseek (fd, 0, SEEK_CUR);	630	ooffset = lseek (fd, 0, SEEK_CUR);
403	lseek (fd, offset, SEEK_SET);	631	lseek (fd, offset, SEEK_SET);
404	res = write (fd, buf, count);	632	res = write (fd, buf, count);
405	lseek (fd, offset, SEEK_SET);	633	lseek (fd, offset, SEEK_SET);
406	pthread_mutex_unlock (&iolock);	634	pthread_mutex_unlock (&preadwritelock);
407		635
408	return res;	636	return res;
409	}	637	}
410	#endif	638	#endif
411		639
…		…
414	#endif	642	#endif
415		643
416	#if !HAVE_READAHEAD	644	#if !HAVE_READAHEAD
417	# define readahead aio_readahead	645	# define readahead aio_readahead
418		646
419	static char readahead_buf[4096];
420
421	static ssize_t
422	readahead (int fd, off_t offset, size_t count)	647	static ssize_t readahead (int fd, off_t offset, size_t count)
423	{	648	{
		649	dBUF;
		650
424	while (count > 0)	651	while (count > 0)
425	{	652	{
426	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	653	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
427		654
428	pread (fd, readahead_buf, len, offset);	655	pread (fd, aio_buf, len, offset);
429	offset += len;	656	offset += len;
430	count -= len;	657	count -= len;
431	}	658	}
432		659
		660	fBUF;
		661
433	errno = 0;	662	errno = 0;
434	}	663	}
435	#endif	664	#endif
436		665
		666	#if !HAVE_READDIR_R
		667	# define readdir_r aio_readdir_r
		668
		669	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		670
		671	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
		672	{
		673	struct dirent *e;
		674	int errorno;
		675
		676	pthread_mutex_lock (&readdirlock);
		677
		678	e = readdir (dirp);
		679	errorno = errno;
		680
		681	if (e)
		682	{
		683	*res = ent;
		684	strcpy (ent->d_name, e->d_name);
		685	}
		686	else
		687	*res = 0;
		688
		689	pthread_mutex_unlock (&readdirlock);
		690
		691	errno = errorno;
		692	return e ? 0 : -1;
		693	}
		694	#endif
		695
437	/* sendfile always needs emulation */	696	/* sendfile always needs emulation */
438	static ssize_t
439	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	697	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
440	{	698	{
441	ssize_t res;	699	ssize_t res;
442		700
443	if (!count)	701	if (!count)
444	return 0;	702	return 0;
445		703
446	#if HAVE_SENDFILE	704	#if HAVE_SENDFILE
447	# if __linux	705	# if __linux
448	res = sendfile (ofd, ifd, &offset, count);	706	res = sendfile (ofd, ifd, &offset, count);
449		707
450	# elif __freebsd	708	# elif __freebsd
451	/*	709	/*
452	* Of course, the freebsd sendfile is a dire hack with no thoughts	710	* Of course, the freebsd sendfile is a dire hack with no thoughts
453	* wasted on making it similar to other I/O functions.	711	* wasted on making it similar to other I/O functions.
454	*/	712	*/
455	{	713	{
456	off_t sbytes;	714	off_t sbytes;
457	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	715	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
458		716
459	if (res < 0 && sbytes)	717	if (res < 0 && sbytes)
460	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */	718	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
461	res = sbytes;	719	res = sbytes;
462	}	720	}
463		721
464	# elif __hpux	722	# elif __hpux
465	res = sendfile (ofd, ifd, offset, count, 0, 0);	723	res = sendfile (ofd, ifd, offset, count, 0, 0);
466		724
467	# elif __solaris	725	# elif __solaris
468	{	726	{
469	struct sendfilevec vec;	727	struct sendfilevec vec;
470	size_t sbytes;	728	size_t sbytes;
471		729
472	vec.sfv_fd = ifd;	730	vec.sfv_fd = ifd;
473	vec.sfv_flag = 0;	731	vec.sfv_flag = 0;
474	vec.sfv_off = offset;	732	vec.sfv_off = offset;
475	vec.sfv_len = count;	733	vec.sfv_len = count;
476		734
477	res = sendfilev (ofd, &vec, 1, &sbytes);	735	res = sendfilev (ofd, &vec, 1, &sbytes);
478		736
479	if (res < 0 && sbytes)	737	if (res < 0 && sbytes)
480	res = sbytes;	738	res = sbytes;
481	}	739	}
482		740
483	# else
484	res = -1;
485	errno = ENOSYS;
486	# endif	741	# endif
		742	#else
		743	res = -1;
		744	errno = ENOSYS;
487	#endif	745	#endif
488		746
489	if (res < 0	747	if (res < 0
490	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK	748	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
491	#if __solaris	749	#if __solaris
492	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE	750	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
493	#endif	751	#endif
494	)	752	)
495	)	753	)
496	{	754	{
497	/* emulate sendfile. this is a major pain in the ass */	755	/* emulate sendfile. this is a major pain in the ass */
498	char *buf = malloc (4096);	756	dBUF;
		757
499	res = 0;	758	res = 0;
500		759
501	for (;;)	760	while (count)
502	{	761	{
503	ssize_t cnt;	762	ssize_t cnt;
504		763
505	cnt = pread (ifd, buf, 4096, offset);	764	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
506		765
507	if (cnt <= 0)	766	if (cnt <= 0)
508	{	767	{
509	if (cnt && !res) res = -1;	768	if (cnt && !res) res = -1;
510	break;	769	break;
511	}	770	}
512		771
513	cnt = write (ofd, buf, cnt);	772	cnt = write (ofd, aio_buf, cnt);
514		773
515	if (cnt <= 0)	774	if (cnt <= 0)
516	{	775	{
517	if (cnt && !res) res = -1;	776	if (cnt && !res) res = -1;
518	break;	777	break;
519	}	778	}
520		779
521	offset += cnt;	780	offset += cnt;
522	res += cnt;	781	res += cnt;
		782	count -= cnt;
523	}	783	}
524		784
525	{	785	fBUF;
526	int errorno = errno;
527	free (buf);
528	errno = errorno;
529	}
530	}	786	}
531		787
532	return res;	788	return res;
		789	}
		790
		791	/* read a full directory */
		792	static int scandir_ (const char *path, void **namesp)
		793	{
		794	DIR *dirp;
		795	union
		796	{
		797	struct dirent d;
		798	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		799	} *u;
		800	struct dirent *entp;
		801	char *name, *names;
		802	int memlen = 4096;
		803	int memofs = 0;
		804	int res = 0;
		805	int errorno;
		806
		807	dirp = opendir (path);
		808	if (!dirp)
		809	return -1;
		810
		811	u = malloc (sizeof (*u));
		812	names = malloc (memlen);
		813
		814	if (u && names)
		815	for (;;)
		816	{
		817	errno = 0;
		818	readdir_r (dirp, &u->d, &entp);
		819
		820	if (!entp)
		821	break;
		822
		823	name = entp->d_name;
		824
		825	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		826	{
		827	int len = strlen (name) + 1;
		828
		829	res++;
		830
		831	while (memofs + len > memlen)
		832	{
		833	memlen *= 2;
		834	names = realloc (names, memlen);
		835	if (!names)
		836	break;
		837	}
		838
		839	memcpy (names + memofs, name, len);
		840	memofs += len;
		841	}
		842	}
		843
		844	errorno = errno;
		845	free (u);
		846	closedir (dirp);
		847
		848	if (errorno)
		849	{
		850	free (names);
		851	errno = errorno;
		852	res = -1;
		853	}
		854
		855	*namesp = (void *)names;
		856	return res;
533	}	857	}
534		858
535	/*****************************************************************************/	859	/*****************************************************************************/
536		860
537	static void *
538	aio_proc (void *thr_arg)	861	static void *aio_proc (void *thr_arg)
539	{	862	{
540	aio_req req;	863	aio_req req;
541	int type;	864	int type;
542		865
543	do	866	do
544	{	867	{
545	pthread_mutex_lock (&reqlock);	868	pthread_mutex_lock (&reqlock);
546		869
547	for (;;)	870	for (;;)
548	{	871	{
549	req = reqs;	872	req = reqq_shift (&req_queue);
550
551	if (reqs)
552	{
553	reqs = reqs->next;
554	if (!reqs) reqe = 0;
555	}
556		873
557	if (req)	874	if (req)
558	break;	875	break;
559		876
560	pthread_cond_wait (&reqwait, &reqlock);	877	pthread_cond_wait (&reqwait, &reqlock);
561	}	878	}
562		879
563	pthread_mutex_unlock (&reqlock);	880	pthread_mutex_unlock (&reqlock);
564		881
565	errno = 0; /* strictly unnecessary */	882	errno = 0; /* strictly unnecessary */
		883	type = req->type; /* remember type for QUIT check */
566		884
567	type = req->type;	885	if (!(req->flags & FLAG_CANCELLED))
568
569	switch (type)	886	switch (type)
570	{	887	{
571	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	888	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
572	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	889	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
573		890
574	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	891	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
575	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	892	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
576		893
577	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	894	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
578	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	895	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
579	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	896	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
580		897
581	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	898	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
582	case REQ_CLOSE: req->result = close (req->fd); break;	899	case REQ_CLOSE: req->result = close (req->fd); break;
583	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	900	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
584	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	901	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		902	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		903	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
585	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	904	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
586		905
587	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	906	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
588	case REQ_FSYNC: req->result = fsync (req->fd); break;	907	case REQ_FSYNC: req->result = fsync (req->fd); break;
		908	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
589		909
		910	case REQ_SLEEP:
		911	{
		912	struct timeval tv;
		913
		914	tv.tv_sec = req->fd;
		915	tv.tv_usec = req->fd2;
		916
		917	req->result = select (0, 0, 0, 0, &tv);
		918	}
		919
		920	case REQ_GROUP:
		921	case REQ_NOP:
590	case REQ_QUIT:	922	case REQ_QUIT:
591	break;	923	break;
592		924
593	default:	925	default:
594	req->result = ENOSYS;	926	req->result = ENOSYS;
595	break;	927	break;
596	}	928	}
597		929
598	req->errorno = errno;	930	req->errorno = errno;
599		931
600	pthread_mutex_lock (&reslock);	932	pthread_mutex_lock (&reslock);
601		933
602	req->next = 0;	934	if (!reqq_push (&res_queue, req))
603
604	if (rese)
605	{
606	rese->next = req;
607	rese = req;
608	}
609	else
610	{
611	rese = ress = req;
612
613	/* write a dummy byte to the pipe so fh becomes ready */	935	/* write a dummy byte to the pipe so fh becomes ready */
614	write (respipe [1], &respipe, 1);	936	write (respipe [1], &respipe, 1);
615	}
616		937
617	pthread_mutex_unlock (&reslock);	938	pthread_mutex_unlock (&reslock);
618	}	939	}
619	while (type != REQ_QUIT);	940	while (type != REQ_QUIT);
620		941
621	return 0;	942	return 0;
		943	}
		944
		945	/*****************************************************************************/
		946
		947	static void atfork_prepare (void)
		948	{
		949	pthread_mutex_lock (&reqlock);
		950	pthread_mutex_lock (&reslock);
		951	#if !HAVE_PREADWRITE
		952	pthread_mutex_lock (&preadwritelock);
		953	#endif
		954	#if !HAVE_READDIR_R
		955	pthread_mutex_lock (&readdirlock);
		956	#endif
		957	}
		958
		959	static void atfork_parent (void)
		960	{
		961	#if !HAVE_READDIR_R
		962	pthread_mutex_unlock (&readdirlock);
		963	#endif
		964	#if !HAVE_PREADWRITE
		965	pthread_mutex_unlock (&preadwritelock);
		966	#endif
		967	pthread_mutex_unlock (&reslock);
		968	pthread_mutex_unlock (&reqlock);
		969	}
		970
		971	static void atfork_child (void)
		972	{
		973	aio_req prv;
		974
		975	started = 0;
		976
		977	while (prv = reqq_shift (&req_queue))
		978	req_free (prv);
		979
		980	while (prv = reqq_shift (&res_queue))
		981	req_free (prv);
		982
		983	close (respipe [0]);
		984	close (respipe [1]);
		985	create_pipe ();
		986
		987	atfork_parent ();
622	}	988	}
623		989
624	#define dREQ \	990	#define dREQ \
625	aio_req req; \	991	aio_req req; \
		992	int req_pri = next_pri; \
		993	next_pri = DEFAULT_PRI + PRI_BIAS; \
626	\	994	\
627	if (SvOK (callback) && !SvROK (callback)) \	995	if (SvOK (callback) && !SvROK (callback)) \
628	croak ("clalback must be undef or of reference type"); \	996	croak ("callback must be undef or of reference type"); \
629	\	997	\
630	Newz (0, req, 1, aio_cb); \	998	Newz (0, req, 1, aio_cb); \
631	if (!req) \	999	if (!req) \
632	croak ("out of memory during aio_req allocation"); \	1000	croak ("out of memory during aio_req allocation"); \
633	\	1001	\
634	req->callback = newSVsv (callback);	1002	req->callback = newSVsv (callback); \
		1003	req->pri = req_pri
		1004
		1005	#define REQ_SEND \
		1006	req_send (req); \
		1007	\
		1008	if (GIMME_V != G_VOID) \
		1009	XPUSHs (req_sv (req, AIO_REQ_KLASS));
635		1010
636	MODULE = IO::AIO PACKAGE = IO::AIO	1011	MODULE = IO::AIO PACKAGE = IO::AIO
637		1012
638	PROTOTYPES: ENABLE	1013	PROTOTYPES: ENABLE
639		1014
640	BOOT:	1015	BOOT:
641	{	1016	{
		1017	HV *stash = gv_stashpv ("IO::AIO", 1);
		1018	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1019	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1020	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1021
642	create_pipe ();	1022	create_pipe ();
643	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1023	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
644	}	1024	}
645		1025
646	void	1026	void
647	min_parallel(nthreads)	1027	min_parallel (nthreads)
648	int nthreads	1028	int nthreads
649	PROTOTYPE: $	1029	PROTOTYPE: $
650		1030
651	void	1031	void
652	max_parallel(nthreads)	1032	max_parallel (nthreads)
653	int nthreads	1033	int nthreads
654	PROTOTYPE: $	1034	PROTOTYPE: $
655		1035
656	int	1036	int
657	max_outstanding(nreqs)	1037	max_outstanding (nreqs)
658	int nreqs	1038	int nreqs
659	PROTOTYPE: $	1039	PROTOTYPE: $
660	CODE:	1040	CODE:
661	RETVAL = max_outstanding;	1041	RETVAL = max_outstanding;
662	max_outstanding = nreqs;	1042	max_outstanding = nreqs;
663		1043
664	void	1044	void
665	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1045	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
666	SV * pathname	1046	SV * pathname
667	int flags	1047	int flags
668	int mode	1048	int mode
669	SV * callback	1049	SV * callback
670	PROTOTYPE: $$$;$	1050	PROTOTYPE: $$$;$
671	CODE:	1051	PPCODE:
672	{	1052	{
673	dREQ;	1053	dREQ;
674		1054
675	req->type = REQ_OPEN;	1055	req->type = REQ_OPEN;
676	req->data = newSVsv (pathname);	1056	req->data = newSVsv (pathname);
677	req->dataptr = SvPVbyte_nolen (req->data);	1057	req->dataptr = SvPVbyte_nolen (req->data);
678	req->fd = flags;	1058	req->fd = flags;
679	req->mode = mode;	1059	req->mode = mode;
680		1060
681	send_req (req);	1061	REQ_SEND;
682	}	1062	}
683		1063
684	void	1064	void
685	aio_close(fh,callback=&PL_sv_undef)	1065	aio_close (fh,callback=&PL_sv_undef)
686	SV * fh	1066	SV * fh
687	SV * callback	1067	SV * callback
688	PROTOTYPE: $;$	1068	PROTOTYPE: $;$
689	ALIAS:	1069	ALIAS:
690	aio_close = REQ_CLOSE	1070	aio_close = REQ_CLOSE
691	aio_fsync = REQ_FSYNC	1071	aio_fsync = REQ_FSYNC
692	aio_fdatasync = REQ_FDATASYNC	1072	aio_fdatasync = REQ_FDATASYNC
693	CODE:	1073	PPCODE:
694	{	1074	{
695	dREQ;	1075	dREQ;
696		1076
697	req->type = ix;	1077	req->type = ix;
698	req->fh = newSVsv (fh);	1078	req->fh = newSVsv (fh);
699	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1079	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
700		1080
701	send_req (req);	1081	REQ_SEND (req);
702	}	1082	}
703		1083
704	void	1084	void
705	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1085	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
706	SV * fh	1086	SV * fh
707	UV offset	1087	UV offset
708	UV length	1088	UV length
709	SV * data	1089	SV * data
710	UV dataoffset	1090	UV dataoffset
711	SV * callback	1091	SV * callback
712	ALIAS:	1092	ALIAS:
713	aio_read = REQ_READ	1093	aio_read = REQ_READ
714	aio_write = REQ_WRITE	1094	aio_write = REQ_WRITE
715	PROTOTYPE: $$$$$;$	1095	PROTOTYPE: $$$$$;$
716	CODE:	1096	PPCODE:
717	{	1097	{
718	aio_req req;	1098	aio_req req;
719	STRLEN svlen;	1099	STRLEN svlen;
720	char *svptr = SvPVbyte (data, svlen);	1100	char *svptr = SvPVbyte (data, svlen);
721		1101
…		…
759	{	1139	{
760	SvREADONLY_on (data);	1140	SvREADONLY_on (data);
761	req->data2ptr = (void *)data;	1141	req->data2ptr = (void *)data;
762	}	1142	}
763		1143
764	send_req (req);	1144	REQ_SEND;
765	}	1145	}
766	}	1146	}
767		1147
768	void	1148	void
769	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1149	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
770	SV * out_fh	1150	SV * out_fh
771	SV * in_fh	1151	SV * in_fh
772	UV in_offset	1152	UV in_offset
773	UV length	1153	UV length
774	SV * callback	1154	SV * callback
775	PROTOTYPE: $$$$;$	1155	PROTOTYPE: $$$$;$
776	CODE:	1156	PPCODE:
777	{	1157	{
778	dREQ;	1158	dREQ;
779		1159
780	req->type = REQ_SENDFILE;	1160	req->type = REQ_SENDFILE;
781	req->fh = newSVsv (out_fh);	1161	req->fh = newSVsv (out_fh);
…		…
783	req->fh2 = newSVsv (in_fh);	1163	req->fh2 = newSVsv (in_fh);
784	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1164	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
785	req->offset = in_offset;	1165	req->offset = in_offset;
786	req->length = length;	1166	req->length = length;
787		1167
788	send_req (req);	1168	REQ_SEND;
789	}	1169	}
790		1170
791	void	1171	void
792	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1172	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
793	SV * fh	1173	SV * fh
794	UV offset	1174	UV offset
795	IV length	1175	IV length
796	SV * callback	1176	SV * callback
797	PROTOTYPE: $$$;$	1177	PROTOTYPE: $$$;$
798	CODE:	1178	PPCODE:
799	{	1179	{
800	dREQ;	1180	dREQ;
801		1181
802	req->type = REQ_READAHEAD;	1182	req->type = REQ_READAHEAD;
803	req->fh = newSVsv (fh);	1183	req->fh = newSVsv (fh);
804	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1184	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
805	req->offset = offset;	1185	req->offset = offset;
806	req->length = length;	1186	req->length = length;
807		1187
808	send_req (req);	1188	REQ_SEND;
809	}	1189	}
810		1190
811	void	1191	void
812	aio_stat(fh_or_path,callback=&PL_sv_undef)	1192	aio_stat (fh_or_path,callback=&PL_sv_undef)
813	SV * fh_or_path	1193	SV * fh_or_path
814	SV * callback	1194	SV * callback
815	ALIAS:	1195	ALIAS:
816	aio_stat = REQ_STAT	1196	aio_stat = REQ_STAT
817	aio_lstat = REQ_LSTAT	1197	aio_lstat = REQ_LSTAT
818	CODE:	1198	PPCODE:
819	{	1199	{
820	dREQ;	1200	dREQ;
821		1201
822	New (0, req->statdata, 1, Stat_t);	1202	New (0, req->statdata, 1, Stat_t);
823	if (!req->statdata)	1203	if (!req->statdata)
824	{	1204	{
825	free_req (req);	1205	req_free (req);
826	croak ("out of memory during aio_req->statdata allocation");	1206	croak ("out of memory during aio_req->statdata allocation");
827	}	1207	}
828		1208
829	if (SvPOK (fh_or_path))	1209	if (SvPOK (fh_or_path))
830	{	1210	{
…		…
837	req->type = REQ_FSTAT;	1217	req->type = REQ_FSTAT;
838	req->fh = newSVsv (fh_or_path);	1218	req->fh = newSVsv (fh_or_path);
839	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1219	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
840	}	1220	}
841		1221
842	send_req (req);	1222	REQ_SEND;
843	}	1223	}
844		1224
845	void	1225	void
846	aio_unlink(pathname,callback=&PL_sv_undef)	1226	aio_unlink (pathname,callback=&PL_sv_undef)
847	SV * pathname	1227	SV * pathname
848	SV * callback	1228	SV * callback
849	ALIAS:	1229	ALIAS:
850	aio_unlink = REQ_UNLINK	1230	aio_unlink = REQ_UNLINK
851	aio_rmdir = REQ_RMDIR	1231	aio_rmdir = REQ_RMDIR
		1232	aio_readdir = REQ_READDIR
852	CODE:	1233	PPCODE:
853	{	1234	{
854	dREQ;	1235	dREQ;
855		1236
856	req->type = ix;	1237	req->type = ix;
857	req->data = newSVsv (pathname);	1238	req->data = newSVsv (pathname);
858	req->dataptr = SvPVbyte_nolen (req->data);	1239	req->dataptr = SvPVbyte_nolen (req->data);
859		1240
860	send_req (req);	1241	REQ_SEND;
861	}	1242	}
862		1243
863	void	1244	void
864	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1245	aio_link (oldpath,newpath,callback=&PL_sv_undef)
865	SV * oldpath	1246	SV * oldpath
866	SV * newpath	1247	SV * newpath
867	SV * callback	1248	SV * callback
		1249	ALIAS:
		1250	aio_link = REQ_LINK
		1251	aio_symlink = REQ_SYMLINK
		1252	aio_rename = REQ_RENAME
868	CODE:	1253	PPCODE:
869	{	1254	{
870	dREQ;	1255	dREQ;
871		1256
872	req->type = REQ_SYMLINK;	1257	req->type = ix;
873	req->fh = newSVsv (oldpath);	1258	req->fh = newSVsv (oldpath);
874	req->data2ptr = SvPVbyte_nolen (req->fh);	1259	req->data2ptr = SvPVbyte_nolen (req->fh);
875	req->data = newSVsv (newpath);	1260	req->data = newSVsv (newpath);
876	req->dataptr = SvPVbyte_nolen (req->data);	1261	req->dataptr = SvPVbyte_nolen (req->data);
877		1262
878	send_req (req);	1263	REQ_SEND;
879	}	1264	}
880		1265
881	void	1266	void
		1267	aio_sleep (delay,callback=&PL_sv_undef)
		1268	double delay
		1269	SV * callback
		1270	PPCODE:
		1271	{
		1272	dREQ;
		1273
		1274	req->type = REQ_SLEEP;
		1275	req->fd = delay < 0. ? 0 : delay;
		1276	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1277
		1278	REQ_SEND;
		1279	}
		1280
		1281	void
		1282	aio_group (callback=&PL_sv_undef)
		1283	SV * callback
		1284	PROTOTYPE: ;$
		1285	PPCODE:
		1286	{
		1287	dREQ;
		1288
		1289	req->type = REQ_GROUP;
		1290	req_send (req);
		1291
		1292	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1293	}
		1294
		1295	void
		1296	aio_nop (callback=&PL_sv_undef)
		1297	SV * callback
		1298	PPCODE:
		1299	{
		1300	dREQ;
		1301
		1302	req->type = REQ_NOP;
		1303
		1304	REQ_SEND;
		1305	}
		1306
		1307	void
		1308	aioreq_pri (int pri = DEFAULT_PRI)
		1309	CODE:
		1310	if (pri < PRI_MIN) pri = PRI_MIN;
		1311	if (pri > PRI_MAX) pri = PRI_MAX;
		1312	next_pri = pri + PRI_BIAS;
		1313
		1314	void
882	flush()	1315	flush ()
883	PROTOTYPE:	1316	PROTOTYPE:
884	CODE:	1317	CODE:
885	while (nreqs)	1318	while (nreqs)
886	{	1319	{
887	poll_wait ();	1320	poll_wait ();
…		…
927	CODE:	1360	CODE:
928	RETVAL = nreqs;	1361	RETVAL = nreqs;
929	OUTPUT:	1362	OUTPUT:
930	RETVAL	1363	RETVAL
931		1364
		1365	PROTOTYPES: DISABLE
		1366
		1367	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1368
		1369	void
		1370	cancel (aio_req_ornot req)
		1371	CODE:
		1372	req_cancel (req);
		1373
		1374	void
		1375	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1376	CODE:
		1377	SvREFCNT_dec (req->callback);
		1378	req->callback = newSVsv (callback);
		1379
		1380	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1381
		1382	void
		1383	add (aio_req grp, ...)
		1384	PPCODE:
		1385	{
		1386	int i;
		1387	aio_req req;
		1388
		1389	if (grp->fd == 2)
		1390	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1391
		1392	for (i = 1; i < items; ++i )
		1393	{
		1394	if (GIMME_V != G_VOID)
		1395	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1396
		1397	req = SvAIO_REQ (ST (i));
		1398
		1399	if (req)
		1400	{
		1401	++grp->length;
		1402	req->grp = grp;
		1403
		1404	req->grp_prev = 0;
		1405	req->grp_next = grp->grp_first;
		1406
		1407	if (grp->grp_first)
		1408	grp->grp_first->grp_prev = req;
		1409
		1410	grp->grp_first = req;
		1411	}
		1412	}
		1413	}
		1414
		1415	void
		1416	result (aio_req grp, ...)
		1417	CODE:
		1418	{
		1419	int i;
		1420	AV *av = newAV ();
		1421
		1422	for (i = 1; i < items; ++i )
		1423	av_push (av, newSVsv (ST (i)));
		1424
		1425	SvREFCNT_dec (grp->data);
		1426	grp->data = (SV *)av;
		1427	}
		1428
		1429	void
		1430	limit (aio_req grp, int limit)
		1431	CODE:
		1432	grp->fd2 = limit;
		1433	aio_grp_feed (grp);
		1434
		1435	void
		1436	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1437	CODE:
		1438	{
		1439	SvREFCNT_dec (grp->fh2);
		1440	grp->fh2 = newSVsv (callback);
		1441
		1442	if (grp->fd2 <= 0)
		1443	grp->fd2 = 2;
		1444
		1445	aio_grp_feed (grp);
		1446	}
		1447

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