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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.33 by root, Mon Aug 22 23:21:57 2005 UTC vs.
Revision 1.70 by root, Tue Oct 24 15:15:56 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"
7		15
8	#include "autoconf/config.h"	16	#include "autoconf/config.h"
9		17
10	#include <pthread.h>	18	#include <pthread.h>
11		19
		20	#include <stddef.h>
		21	#include <errno.h>
		22	#include <sys/time.h>
		23	#include <sys/select.h>
12	#include <sys/types.h>	24	#include <sys/types.h>
13	#include <sys/stat.h>	25	#include <sys/stat.h>
14		26	#include <limits.h>
15	#include <unistd.h>	27	#include <unistd.h>
16	#include <fcntl.h>	28	#include <fcntl.h>
17	#include <signal.h>	29	#include <signal.h>
18	#include <sched.h>	30	#include <sched.h>
19		31
…		…
23	# elif __freebsd	35	# elif __freebsd
24	# include <sys/socket.h>	36	# include <sys/socket.h>
25	# include <sys/uio.h>	37	# include <sys/uio.h>
26	# elif __hpux	38	# elif __hpux
27	# include <sys/socket.h>	39	# include <sys/socket.h>
		40	# elif __solaris /* not yet */
		41	# include <sys/sendfile.h>
		42	# else
		43	# error sendfile support requested but not available
28	# endif	44	# endif
		45	#endif
		46
		47	/* used for struct dirent, AIX doesn't provide it */
		48	#ifndef NAME_MAX
		49	# define NAME_MAX 4096
29	#endif	50	#endif
30		51
31	#if __ia64	52	#if __ia64
32	# define STACKSIZE 65536	53	# define STACKSIZE 65536
		54	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
		55	# define STACKSIZE PTHREAD_STACK_MIN
33	#else	56	#else
34	# define STACKSIZE 4096	57	# define STACKSIZE 16384
35	#endif	58	#endif
		59
		60	/* buffer size for various temporary buffers */
		61	#define AIO_BUFSIZE 65536
		62
		63	#define dBUF \
		64	char *aio_buf = malloc (AIO_BUFSIZE); \
		65	if (!aio_buf) \
		66	return -1;
		67
		68	#define fBUF free (aio_buf)
36		69
37	enum {	70	enum {
38	REQ_QUIT,	71	REQ_QUIT,
39	REQ_OPEN, REQ_CLOSE,	72	REQ_OPEN, REQ_CLOSE,
40	REQ_READ, REQ_WRITE, REQ_READAHEAD,	73	REQ_READ, REQ_WRITE, REQ_READAHEAD,
41	REQ_SENDFILE,	74	REQ_SENDFILE,
42	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	75	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
43	REQ_FSYNC, REQ_FDATASYNC,	76	REQ_FSYNC, REQ_FDATASYNC,
44	REQ_UNLINK, REQ_RMDIR,	77	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
45	REQ_SYMLINK,	78	REQ_READDIR,
		79	REQ_LINK, REQ_SYMLINK,
		80	REQ_GROUP, REQ_NOP,
		81	REQ_BUSY,
46	};	82	};
47		83
		84	#define AIO_REQ_KLASS "IO::AIO::REQ"
		85	#define AIO_GRP_KLASS "IO::AIO::GRP"
		86
48	typedef struct aio_cb {	87	typedef struct aio_cb
		88	{
49	struct aio_cb *volatile next;	89	struct aio_cb *volatile next;
50		90
51	int type;	91	SV *data, *callback;
52		92	SV *fh, *fh2;
53	int fd, fd2;	93	void *dataptr, *data2ptr;
		94	Stat_t *statdata;
54	off_t offset;	95	off_t offset;
55	size_t length;	96	size_t length;
56	ssize_t result;	97	ssize_t result;
		98
		99	STRLEN dataoffset;
		100	int type;
		101	int fd, fd2;
		102	int errorno;
57	mode_t mode; /* open */	103	mode_t mode; /* open */
58	int errorno;
59	SV *data, *callback;
60	SV *fh, *fh2;
61	void *dataptr, *data2ptr;
62	STRLEN dataoffset;
63		104
64	Stat_t *statdata;	105	unsigned char flags;
		106	unsigned char pri;
		107
		108	SV *self; /* the perl counterpart of this request, if any */
		109	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
65	} aio_cb;	110	} aio_cb;
66		111
		112	enum {
		113	FLAG_CANCELLED = 0x01,
		114	};
		115
67	typedef aio_cb *aio_req;	116	typedef aio_cb *aio_req;
		117	typedef aio_cb *aio_req_ornot;
		118
		119	enum {
		120	PRI_MIN = -4,
		121	PRI_MAX = 4,
		122
		123	DEFAULT_PRI = 0,
		124	PRI_BIAS = -PRI_MIN,
		125	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
		126	};
		127
		128	static int next_pri = DEFAULT_PRI + PRI_BIAS;
68		129
69	static int started, wanted;	130	static int started, wanted;
70	static volatile int nreqs;	131	static volatile int nreqs;
71	static int max_outstanding = 1<<30;	132	static int max_outstanding = 1<<30;
72	static int respipe [2];	133	static int respipe [2];
73		134
		135	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
		136	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
		137	#else
		138	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
		139	#endif
		140
74	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	141	static pthread_mutex_t reslock = AIO_MUTEX_INIT;
75	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;	142	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;
76	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	143	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
77		144
78	static volatile aio_req reqs, reqe; /* queue start, queue end */	145	/*
79	static volatile aio_req ress, rese; /* queue start, queue end */	146	* a somewhat faster data structure might be nice, but
		147	* with 8 priorities this actually needs <20 insns
		148	* per shift, the most expensive operation.
		149	*/
		150	typedef struct {
		151	aio_req qs[NUM_PRI], qe[NUM_PRI]; /* qstart, qend */
		152	int size;
		153	} reqq;
80		154
		155	static reqq req_queue;
		156	static reqq res_queue;
		157
		158	int reqq_push (reqq *q, aio_req req)
		159	{
		160	int pri = req->pri;
		161	req->next = 0;
		162
		163	if (q->qe[pri])
		164	{
		165	q->qe[pri]->next = req;
		166	q->qe[pri] = req;
		167	}
		168	else
		169	q->qe[pri] = q->qs[pri] = req;
		170
		171	return q->size++;
		172	}
		173
		174	aio_req reqq_shift (reqq *q)
		175	{
		176	int pri;
		177
		178	if (!q->size)
		179	return 0;
		180
		181	--q->size;
		182
		183	for (pri = NUM_PRI; pri--; )
		184	{
		185	aio_req req = q->qs[pri];
		186
		187	if (req)
		188	{
		189	if (!(q->qs[pri] = req->next))
		190	q->qe[pri] = 0;
		191
		192	return req;
		193	}
		194	}
		195
		196	abort ();
		197	}
		198
		199	static void req_invoke (aio_req req);
81	static void free_req (aio_req req)	200	static void req_free (aio_req req);
82	{
83	if (req->data)
84	SvREFCNT_dec (req->data);
85		201
		202	/* must be called at most once */
		203	static SV *req_sv (aio_req req, const char *klass)
		204	{
86	if (req->fh)	205	if (!req->self)
87	SvREFCNT_dec (req->fh);	206	{
		207	req->self = (SV *)newHV ();
		208	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		209	}
88		210
89	if (req->fh2)	211	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
		212	}
		213
		214	static aio_req SvAIO_REQ (SV *sv)
		215	{
		216	MAGIC *mg;
		217
		218	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		219	croak ("object of class " AIO_REQ_KLASS " expected");
		220
		221	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		222
		223	return mg ? (aio_req)mg->mg_ptr : 0;
		224	}
		225
		226	static void aio_grp_feed (aio_req grp)
		227	{
		228	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))
		229	{
		230	int old_len = grp->length;
		231
		232	if (grp->fh2 && SvOK (grp->fh2))
		233	{
		234	dSP;
		235
		236	ENTER;
		237	SAVETMPS;
		238	PUSHMARK (SP);
		239	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		240	PUTBACK;
		241	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);
		242	SPAGAIN;
		243	FREETMPS;
		244	LEAVE;
		245	}
		246
		247	/* stop if no progress has been made */
		248	if (old_len == grp->length)
		249	{
90	SvREFCNT_dec (req->fh2);	250	SvREFCNT_dec (grp->fh2);
91		251	grp->fh2 = 0;
92	if (req->statdata)	252	break;
93	Safefree (req->statdata);	253	}
94
95	if (req->callback)
96	SvREFCNT_dec (req->callback);
97
98	Safefree (req);
99	}
100
101	static void
102	poll_wait ()
103	{
104	if (nreqs && !ress)
105	{	254	}
		255	}
		256
		257	static void aio_grp_dec (aio_req grp)
		258	{
		259	--grp->length;
		260
		261	/* call feeder, if applicable */
		262	aio_grp_feed (grp);
		263
		264	/* finish, if done */
		265	if (!grp->length && grp->fd)
		266	{
		267	req_invoke (grp);
		268	req_free (grp);
		269	}
		270	}
		271
		272	static void poll_wait ()
		273	{
106	fd_set rfd;	274	fd_set rfd;
		275
		276	while (nreqs)
		277	{
		278	int size;
		279	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
		280	pthread_mutex_lock (&reslock);
		281	#endif
		282	size = res_queue.size;
		283	#if !(__i386 || __x86_64) /* safe without sempahore on this archs */
		284	pthread_mutex_unlock (&reslock);
		285	#endif
		286
		287	if (size)
		288	return;
		289
107	FD_ZERO(&rfd);	290	FD_ZERO(&rfd);
108	FD_SET(respipe [0], &rfd);	291	FD_SET(respipe [0], &rfd);
109		292
110	select (respipe [0] + 1, &rfd, 0, 0, 0);	293	select (respipe [0] + 1, &rfd, 0, 0, 0);
111	}	294	}
112	}	295	}
113		296
114	static int	297	static void req_invoke (aio_req req)
115	poll_cb ()	298	{
		299	dSP;
		300
		301	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
		302	{
		303	errno = req->errorno;
		304
		305	ENTER;
		306	SAVETMPS;
		307	PUSHMARK (SP);
		308	EXTEND (SP, 1);
		309
		310	switch (req->type)
		311	{
		312	case REQ_READDIR:
		313	{
		314	SV *rv = &PL_sv_undef;
		315
		316	if (req->result >= 0)
		317	{
		318	char *buf = req->data2ptr;
		319	AV *av = newAV ();
		320
		321	while (req->result)
		322	{
		323	SV *sv = newSVpv (buf, 0);
		324
		325	av_push (av, sv);
		326	buf += SvCUR (sv) + 1;
		327	req->result--;
		328	}
		329
		330	rv = sv_2mortal (newRV_noinc ((SV *)av));
		331	}
		332
		333	PUSHs (rv);
		334	}
		335	break;
		336
		337	case REQ_OPEN:
		338	{
		339	/* convert fd to fh */
		340	SV *fh;
		341
		342	PUSHs (sv_2mortal (newSViv (req->result)));
		343	PUTBACK;
		344	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
		345	SPAGAIN;
		346
		347	fh = SvREFCNT_inc (POPs);
		348
		349	PUSHMARK (SP);
		350	XPUSHs (sv_2mortal (fh));
		351	}
		352	break;
		353
		354	case REQ_GROUP:
		355	req->fd = 2; /* mark group as finished */
		356
		357	if (req->data)
		358	{
		359	int i;
		360	AV *av = (AV *)req->data;
		361
		362	EXTEND (SP, AvFILL (av) + 1);
		363	for (i = 0; i <= AvFILL (av); ++i)
		364	PUSHs (*av_fetch (av, i, 0));
		365	}
		366	break;
		367
		368	case REQ_NOP:
		369	case REQ_BUSY:
		370	break;
		371
		372	default:
		373	PUSHs (sv_2mortal (newSViv (req->result)));
		374	break;
		375	}
		376
		377
		378	PUTBACK;
		379	call_sv (req->callback, G_VOID | G_EVAL);
		380	SPAGAIN;
		381
		382	FREETMPS;
		383	LEAVE;
		384	}
		385
		386	if (req->grp)
		387	{
		388	aio_req grp = req->grp;
		389
		390	/* unlink request */
		391	if (req->grp_next) req->grp_next->grp_prev = req->grp_prev;
		392	if (req->grp_prev) req->grp_prev->grp_next = req->grp_next;
		393
		394	if (grp->grp_first == req)
		395	grp->grp_first = req->grp_next;
		396
		397	aio_grp_dec (grp);
		398	}
		399
		400	if (SvTRUE (ERRSV))
		401	{
		402	req_free (req);
		403	croak (0);
		404	}
		405	}
		406
		407	static void req_free (aio_req req)
		408	{
		409	if (req->self)
		410	{
		411	sv_unmagic (req->self, PERL_MAGIC_ext);
		412	SvREFCNT_dec (req->self);
		413	}
		414
		415	SvREFCNT_dec (req->data);
		416	SvREFCNT_dec (req->fh);
		417	SvREFCNT_dec (req->fh2);
		418	SvREFCNT_dec (req->callback);
		419	Safefree (req->statdata);
		420
		421	if (req->type == REQ_READDIR && req->result >= 0)
		422	free (req->data2ptr);
		423
		424	Safefree (req);
		425	}
		426
		427	static void req_cancel (aio_req req)
		428	{
		429	req->flags |= FLAG_CANCELLED;
		430
		431	if (req->type == REQ_GROUP)
		432	{
		433	aio_req sub;
		434
		435	for (sub = req->grp_first; sub; sub = sub->grp_next)
		436	req_cancel (sub);
		437	}
		438	}
		439
		440	static int poll_cb ()
116	{	441	{
117	dSP;	442	dSP;
118	int count = 0;	443	int count = 0;
119	int do_croak = 0;	444	int do_croak = 0;
120	aio_req req;	445	aio_req req;
121		446
122	for (;;)	447	for (;;)
123	{	448	{
124	pthread_mutex_lock (&reslock);	449	pthread_mutex_lock (&reslock);
125	req = ress;	450	req = reqq_shift (&res_queue);
126		451
127	if (req)	452	if (req)
128	{	453	{
129	ress = req->next;
130
131	if (!ress)	454	if (!res_queue.size)
132	{	455	{
133	/* read any signals sent by the worker threads */	456	/* read any signals sent by the worker threads */
134	char buf [32];	457	char buf [32];
135	while (read (respipe [0], buf, 32) == 32)	458	while (read (respipe [0], buf, 32) == 32)
136	;	459	;
137
138	rese = 0;
139	}	460	}
140	}	461	}
141		462
142	pthread_mutex_unlock (&reslock);	463	pthread_mutex_unlock (&reslock);
143		464
144	if (!req)	465	if (!req)
145	break;	466	break;
146		467
147	nreqs--;	468	--nreqs;
148		469
149	if (req->type == REQ_QUIT)	470	if (req->type == REQ_QUIT)
150	started--;	471	started--;
		472	else if (req->type == REQ_GROUP && req->length)
		473	{
		474	req->fd = 1; /* mark request as delayed */
		475	continue;
		476	}
151	else	477	else
152	{	478	{
153	int errorno = errno;
154	errno = req->errorno;
155
156	if (req->type == REQ_READ)	479	if (req->type == REQ_READ)
157	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));	480	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
158		481
159	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))	482	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
160	SvREADONLY_off (req->data);	483	SvREADONLY_off (req->data);
…		…
164	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;	487	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
165	PL_laststatval = req->result;	488	PL_laststatval = req->result;
166	PL_statcache = *(req->statdata);	489	PL_statcache = *(req->statdata);
167	}	490	}
168		491
169	ENTER;	492	req_invoke (req);
170	PUSHMARK (SP);
171	XPUSHs (sv_2mortal (newSViv (req->result)));
172		493
173	if (req->type == REQ_OPEN)
174	{
175	/* convert fd to fh */
176	SV *fh;
177
178	PUTBACK;
179	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
180	SPAGAIN;
181
182	fh = SvREFCNT_inc (POPs);
183
184	PUSHMARK (SP);
185	XPUSHs (sv_2mortal (fh));
186	}
187
188	if (SvOK (req->callback))
189	{
190	PUTBACK;
191	call_sv (req->callback, G_VOID | G_EVAL);
192	SPAGAIN;
193
194	if (SvTRUE (ERRSV))
195	{
196	free_req (req);
197	croak (0);
198	}
199	}
200
201	LEAVE;
202
203	errno = errorno;
204	count++;	494	count++;
205	}	495	}
206		496
207	free_req (req);	497	req_free (req);
208	}	498	}
209		499
210	return count;	500	return count;
211	}	501	}
212		502
213	static void *aio_proc(void *arg);	503	static void *aio_proc(void *arg);
214		504
215	static void
216	start_thread (void)	505	static void start_thread (void)
217	{	506	{
218	sigset_t fullsigset, oldsigset;	507	sigset_t fullsigset, oldsigset;
219	pthread_t tid;	508	pthread_t tid;
220	pthread_attr_t attr;	509	pthread_attr_t attr;
221		510
…		…
230	started++;	519	started++;
231		520
232	sigprocmask (SIG_SETMASK, &oldsigset, 0);	521	sigprocmask (SIG_SETMASK, &oldsigset, 0);
233	}	522	}
234		523
235	static void	524	static void req_send (aio_req req)
236	send_req (aio_req req)
237	{	525	{
238	while (started < wanted && nreqs >= started)	526	while (started < wanted && nreqs >= started)
239	start_thread ();	527	start_thread ();
240		528
241	nreqs++;	529	++nreqs;
242		530
243	pthread_mutex_lock (&reqlock);	531	pthread_mutex_lock (&reqlock);
244		532	reqq_push (&req_queue, req);
245	req->next = 0;
246
247	if (reqe)
248	{
249	reqe->next = req;
250	reqe = req;
251	}
252	else
253	reqe = reqs = req;
254
255	pthread_cond_signal (&reqwait);	533	pthread_cond_signal (&reqwait);
256	pthread_mutex_unlock (&reqlock);	534	pthread_mutex_unlock (&reqlock);
257		535
258	if (nreqs > max_outstanding)	536	if (nreqs > max_outstanding)
259	for (;;)	537	for (;;)
…		…
265		543
266	poll_wait ();	544	poll_wait ();
267	}	545	}
268	}	546	}
269		547
270	static void	548	static void end_thread (void)
271	end_thread (void)
272	{	549	{
273	aio_req req;	550	aio_req req;
		551
274	Newz (0, req, 1, aio_cb);	552	Newz (0, req, 1, aio_cb);
		553
275	req->type = REQ_QUIT;	554	req->type = REQ_QUIT;
		555	req->pri = PRI_MAX + PRI_BIAS;
276		556
277	send_req (req);	557	req_send (req);
278	}	558	}
279		559
280	static void min_parallel (int nthreads)	560	static void min_parallel (int nthreads)
281	{	561	{
282	if (wanted < nthreads)	562	if (wanted < nthreads)
…		…
311	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))	591	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
312	croak ("cannot set result pipe to nonblocking mode");	592	croak ("cannot set result pipe to nonblocking mode");
313		593
314	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))	594	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
315	croak ("cannot set result pipe to nonblocking mode");	595	croak ("cannot set result pipe to nonblocking mode");
316	}
317
318	static void atfork_prepare (void)
319	{
320	pthread_mutex_lock (&reqlock);
321	pthread_mutex_lock (&reslock);
322	}
323
324	static void atfork_parent (void)
325	{
326	pthread_mutex_unlock (&reslock);
327	pthread_mutex_unlock (&reqlock);
328	}
329
330	static void atfork_child (void)
331	{
332	aio_req prv;
333
334	started = 0;
335
336	while (reqs)
337	{
338	prv = reqs;
339	reqs = prv->next;
340	free_req (prv);
341	}
342
343	reqs = reqe = 0;
344
345	while (ress)
346	{
347	prv = ress;
348	ress = prv->next;
349	free_req (prv);
350	}
351
352	ress = rese = 0;
353
354	close (respipe [0]);
355	close (respipe [1]);
356	create_pipe ();
357
358	atfork_parent ();
359	}	596	}
360		597
361	/*****************************************************************************/	598	/*****************************************************************************/
362	/* work around various missing functions */	599	/* work around various missing functions */
363		600
…		…
368	/*	605	/*
369	* make our pread/pwrite safe against themselves, but not against	606	* make our pread/pwrite safe against themselves, but not against
370	* normal read/write by using a mutex. slows down execution a lot,	607	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.	608	* but that's your problem, not mine.
372	*/	609	*/
373	static pthread_mutex_t iolock = PTHREAD_MUTEX_INITIALIZER;	610	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374		611
375	static ssize_t	612	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	{	613	{
378	ssize_t res;	614	ssize_t res;
379	off_t ooffset;	615	off_t ooffset;
380		616
381	pthread_mutex_lock (&iolock);	617	pthread_mutex_lock (&preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);	618	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);	619	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);	620	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);	621	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&iolock);	622	pthread_mutex_unlock (&preadwritelock);
387		623
388	return res;	624	return res;
389	}	625	}
390		626
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)	627	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
393	{	628	{
394	ssize_t res;	629	ssize_t res;
395	off_t ooffset;	630	off_t ooffset;
396		631
397	pthread_mutex_lock (&iolock);	632	pthread_mutex_lock (&preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);	633	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);	634	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);	635	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);	636	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&iolock);	637	pthread_mutex_unlock (&preadwritelock);
403		638
404	return res;	639	return res;
405	}	640	}
406	#endif	641	#endif
407		642
…		…
410	#endif	645	#endif
411		646
412	#if !HAVE_READAHEAD	647	#if !HAVE_READAHEAD
413	# define readahead aio_readahead	648	# define readahead aio_readahead
414		649
415	static char readahead_buf[4096];
416
417	static ssize_t
418	readahead (int fd, off_t offset, size_t count)	650	static ssize_t readahead (int fd, off_t offset, size_t count)
419	{	651	{
		652	dBUF;
		653
420	while (count > 0)	654	while (count > 0)
421	{	655	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);	656	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;
423		657
424	pread (fd, readahead_buf, len, offset);	658	pread (fd, aio_buf, len, offset);
425	offset += len;	659	offset += len;
426	count -= len;	660	count -= len;
427	}	661	}
428		662
		663	fBUF;
		664
429	errno = 0;	665	errno = 0;
430	}	666	}
431	#endif	667	#endif
432		668
		669	#if !HAVE_READDIR_R
		670	# define readdir_r aio_readdir_r
		671
		672	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
		673
		674	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
		675	{
		676	struct dirent *e;
		677	int errorno;
		678
		679	pthread_mutex_lock (&readdirlock);
		680
		681	e = readdir (dirp);
		682	errorno = errno;
		683
		684	if (e)
		685	{
		686	*res = ent;
		687	strcpy (ent->d_name, e->d_name);
		688	}
		689	else
		690	*res = 0;
		691
		692	pthread_mutex_unlock (&readdirlock);
		693
		694	errno = errorno;
		695	return e ? 0 : -1;
		696	}
		697	#endif
		698
433	/* sendfile always needs emulation */	699	/* sendfile always needs emulation */
434	static ssize_t
435	sendfile_ (int ofd, int ifd, off_t offset, size_t count)	700	static ssize_t sendfile_ (int ofd, int ifd, off_t offset, size_t count)
436	{	701	{
437	ssize_t res;	702	ssize_t res;
438		703
439	if (!count)	704	if (!count)
440	return 0;	705	return 0;
441		706
		707	#if HAVE_SENDFILE
442	#if __linux	708	# if __linux
443	res = sendfile (ofd, ifd, &offset, count);	709	res = sendfile (ofd, ifd, &offset, count);
444		710
445	#elif __freebsd	711	# elif __freebsd
446	/*	712	/*
447	* Of course, the freebsd sendfile is a dire hack with no thoughts	713	* Of course, the freebsd sendfile is a dire hack with no thoughts
448	* wasted on making it similar to other i/o functions.	714	* wasted on making it similar to other I/O functions.
449	*/	715	*/
450	{	716	{
451	off_t sbytes;	717	off_t sbytes;
452	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);	718	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
453		719
454	if (!res && errno == EAGAIN)	720	if (res < 0 && sbytes)
455	/* maybe on others, too, as usual, the manpage leaves you guessing */	721	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
456	res = sbytes;	722	res = sbytes;
457	}	723	}
458		724
459	#elif __hpux	725	# elif __hpux
460	res = sendfile (ofd, ifd, offset, count, 0, 0);	726	res = sendfile (ofd, ifd, offset, count, 0, 0);
461		727
		728	# elif __solaris
		729	{
		730	struct sendfilevec vec;
		731	size_t sbytes;
		732
		733	vec.sfv_fd = ifd;
		734	vec.sfv_flag = 0;
		735	vec.sfv_off = offset;
		736	vec.sfv_len = count;
		737
		738	res = sendfilev (ofd, &vec, 1, &sbytes);
		739
		740	if (res < 0 && sbytes)
		741	res = sbytes;
		742	}
		743
		744	# endif
462	#else	745	#else
463	res = -1;	746	res = -1;
464	errno = ENOSYS;	747	errno = ENOSYS;
465	#endif	748	#endif
466		749
		750	if (res < 0
467	if (res < 0 && (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK))	751	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
		752	#if __solaris
		753	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
		754	#endif
		755	)
		756	)
468	{	757	{
469	/* emulate sendfile. this is a major pain in the ass */	758	/* emulate sendfile. this is a major pain in the ass */
470	char *buf = malloc (4096);	759	dBUF;
		760
471	res = 0;	761	res = 0;
472		762
473	for (;;)	763	while (count)
474	{	764	{
475	ssize_t cnt;	765	ssize_t cnt;
476		766
477	cnt = pread (ifd, buf, 4096, offset);	767	cnt = pread (ifd, aio_buf, count > AIO_BUFSIZE ? AIO_BUFSIZE : count, offset);
478		768
479	if (cnt <= 0)	769	if (cnt <= 0)
480	{	770	{
481	if (cnt && !res) res = -1;	771	if (cnt && !res) res = -1;
482	break;	772	break;
483	}	773	}
484		774
485	cnt = write (ofd, buf, cnt);	775	cnt = write (ofd, aio_buf, cnt);
486		776
487	if (cnt <= 0)	777	if (cnt <= 0)
488	{	778	{
489	if (cnt && !res) res = -1;	779	if (cnt && !res) res = -1;
490	break;	780	break;
491	}	781	}
492		782
493	offset += cnt;	783	offset += cnt;
494	res += cnt;	784	res += cnt;
		785	count -= cnt;
495	}	786	}
496		787
497	{	788	fBUF;
498	int errorno = errno;
499	free (buf);
500	errno = errorno;
501	}
502	}	789	}
503		790
504	return res;	791	return res;
		792	}
		793
		794	/* read a full directory */
		795	static int scandir_ (const char *path, void **namesp)
		796	{
		797	DIR *dirp;
		798	union
		799	{
		800	struct dirent d;
		801	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
		802	} *u;
		803	struct dirent *entp;
		804	char *name, *names;
		805	int memlen = 4096;
		806	int memofs = 0;
		807	int res = 0;
		808	int errorno;
		809
		810	dirp = opendir (path);
		811	if (!dirp)
		812	return -1;
		813
		814	u = malloc (sizeof (*u));
		815	names = malloc (memlen);
		816
		817	if (u && names)
		818	for (;;)
		819	{
		820	errno = 0;
		821	readdir_r (dirp, &u->d, &entp);
		822
		823	if (!entp)
		824	break;
		825
		826	name = entp->d_name;
		827
		828	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
		829	{
		830	int len = strlen (name) + 1;
		831
		832	res++;
		833
		834	while (memofs + len > memlen)
		835	{
		836	memlen *= 2;
		837	names = realloc (names, memlen);
		838	if (!names)
		839	break;
		840	}
		841
		842	memcpy (names + memofs, name, len);
		843	memofs += len;
		844	}
		845	}
		846
		847	errorno = errno;
		848	free (u);
		849	closedir (dirp);
		850
		851	if (errorno)
		852	{
		853	free (names);
		854	errno = errorno;
		855	res = -1;
		856	}
		857
		858	*namesp = (void *)names;
		859	return res;
505	}	860	}
506		861
507	/*****************************************************************************/	862	/*****************************************************************************/
508		863
509	static void *
510	aio_proc (void *thr_arg)	864	static void *aio_proc (void *thr_arg)
511	{	865	{
512	aio_req req;	866	aio_req req;
513	int type;	867	int type;
514		868
515	do	869	do
516	{	870	{
517	pthread_mutex_lock (&reqlock);	871	pthread_mutex_lock (&reqlock);
518		872
519	for (;;)	873	for (;;)
520	{	874	{
521	req = reqs;	875	req = reqq_shift (&req_queue);
522
523	if (reqs)
524	{
525	reqs = reqs->next;
526	if (!reqs) reqe = 0;
527	}
528		876
529	if (req)	877	if (req)
530	break;	878	break;
531		879
532	pthread_cond_wait (&reqwait, &reqlock);	880	pthread_cond_wait (&reqwait, &reqlock);
533	}	881	}
534		882
535	pthread_mutex_unlock (&reqlock);	883	pthread_mutex_unlock (&reqlock);
536		884
537	errno = 0; /* strictly unnecessary */	885	errno = 0; /* strictly unnecessary */
		886	type = req->type; /* remember type for QUIT check */
538		887
539	type = req->type;	888	if (!(req->flags & FLAG_CANCELLED))
540
541	switch (type)	889	switch (type)
542	{	890	{
543	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	891	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
544	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	892	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
545		893
546	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	894	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
547	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	895	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
548		896
549	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	897	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
550	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	898	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
551	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	899	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
552		900
553	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	901	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
554	case REQ_CLOSE: req->result = close (req->fd); break;	902	case REQ_CLOSE: req->result = close (req->fd); break;
555	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	903	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
556	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	904	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
		905	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
		906	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
557	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	907	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
558		908
559	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	909	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
560	case REQ_FSYNC: req->result = fsync (req->fd); break;	910	case REQ_FSYNC: req->result = fsync (req->fd); break;
		911	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
561		912
		913	case REQ_BUSY:
		914	{
		915	struct timeval tv;
		916
		917	tv.tv_sec = req->fd;
		918	tv.tv_usec = req->fd2;
		919
		920	req->result = select (0, 0, 0, 0, &tv);
		921	}
		922
		923	case REQ_GROUP:
		924	case REQ_NOP:
562	case REQ_QUIT:	925	case REQ_QUIT:
563	break;	926	break;
564		927
565	default:	928	default:
566	req->result = ENOSYS;	929	req->result = ENOSYS;
567	break;	930	break;
568	}	931	}
569		932
570	req->errorno = errno;	933	req->errorno = errno;
571		934
572	pthread_mutex_lock (&reslock);	935	pthread_mutex_lock (&reslock);
573		936
574	req->next = 0;	937	if (!reqq_push (&res_queue, req))
575
576	if (rese)
577	{
578	rese->next = req;
579	rese = req;
580	}
581	else
582	{
583	rese = ress = req;
584
585	/* write a dummy byte to the pipe so fh becomes ready */	938	/* write a dummy byte to the pipe so fh becomes ready */
586	write (respipe [1], &respipe, 1);	939	write (respipe [1], &respipe, 1);
587	}
588		940
589	pthread_mutex_unlock (&reslock);	941	pthread_mutex_unlock (&reslock);
590	}	942	}
591	while (type != REQ_QUIT);	943	while (type != REQ_QUIT);
592		944
593	return 0;	945	return 0;
		946	}
		947
		948	/*****************************************************************************/
		949
		950	static void atfork_prepare (void)
		951	{
		952	pthread_mutex_lock (&reqlock);
		953	pthread_mutex_lock (&reslock);
		954	#if !HAVE_PREADWRITE
		955	pthread_mutex_lock (&preadwritelock);
		956	#endif
		957	#if !HAVE_READDIR_R
		958	pthread_mutex_lock (&readdirlock);
		959	#endif
		960	}
		961
		962	static void atfork_parent (void)
		963	{
		964	#if !HAVE_READDIR_R
		965	pthread_mutex_unlock (&readdirlock);
		966	#endif
		967	#if !HAVE_PREADWRITE
		968	pthread_mutex_unlock (&preadwritelock);
		969	#endif
		970	pthread_mutex_unlock (&reslock);
		971	pthread_mutex_unlock (&reqlock);
		972	}
		973
		974	static void atfork_child (void)
		975	{
		976	aio_req prv;
		977
		978	started = 0;
		979
		980	while (prv = reqq_shift (&req_queue))
		981	req_free (prv);
		982
		983	while (prv = reqq_shift (&res_queue))
		984	req_free (prv);
		985
		986	close (respipe [0]);
		987	close (respipe [1]);
		988	create_pipe ();
		989
		990	atfork_parent ();
594	}	991	}
595		992
596	#define dREQ \	993	#define dREQ \
597	aio_req req; \	994	aio_req req; \
		995	int req_pri = next_pri; \
		996	next_pri = DEFAULT_PRI + PRI_BIAS; \
598	\	997	\
599	if (SvOK (callback) && !SvROK (callback)) \	998	if (SvOK (callback) && !SvROK (callback)) \
600	croak ("clalback must be undef or of reference type"); \	999	croak ("callback must be undef or of reference type"); \
601	\	1000	\
602	Newz (0, req, 1, aio_cb); \	1001	Newz (0, req, 1, aio_cb); \
603	if (!req) \	1002	if (!req) \
604	croak ("out of memory during aio_req allocation"); \	1003	croak ("out of memory during aio_req allocation"); \
605	\	1004	\
606	req->callback = newSVsv (callback);	1005	req->callback = newSVsv (callback); \
		1006	req->pri = req_pri
		1007
		1008	#define REQ_SEND \
		1009	req_send (req); \
		1010	\
		1011	if (GIMME_V != G_VOID) \
		1012	XPUSHs (req_sv (req, AIO_REQ_KLASS));
607		1013
608	MODULE = IO::AIO PACKAGE = IO::AIO	1014	MODULE = IO::AIO PACKAGE = IO::AIO
609		1015
610	PROTOTYPES: ENABLE	1016	PROTOTYPES: ENABLE
611		1017
612	BOOT:	1018	BOOT:
613	{	1019	{
		1020	HV *stash = gv_stashpv ("IO::AIO", 1);
		1021	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		1022	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		1023	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1024
614	create_pipe ();	1025	create_pipe ();
615	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1026	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
616	}	1027	}
617		1028
618	void	1029	void
619	min_parallel(nthreads)	1030	min_parallel (nthreads)
620	int nthreads	1031	int nthreads
621	PROTOTYPE: $	1032	PROTOTYPE: $
622		1033
623	void	1034	void
624	max_parallel(nthreads)	1035	max_parallel (nthreads)
625	int nthreads	1036	int nthreads
626	PROTOTYPE: $	1037	PROTOTYPE: $
627		1038
628	int	1039	int
629	max_outstanding(nreqs)	1040	max_outstanding (nreqs)
630	int nreqs	1041	int nreqs
631	PROTOTYPE: $	1042	PROTOTYPE: $
632	CODE:	1043	CODE:
633	RETVAL = max_outstanding;	1044	RETVAL = max_outstanding;
634	max_outstanding = nreqs;	1045	max_outstanding = nreqs;
635		1046
636	void	1047	void
637	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1048	aio_open (pathname,flags,mode,callback=&PL_sv_undef)
638	SV * pathname	1049	SV * pathname
639	int flags	1050	int flags
640	int mode	1051	int mode
641	SV * callback	1052	SV * callback
642	PROTOTYPE: $$$;$	1053	PROTOTYPE: $$$;$
643	CODE:	1054	PPCODE:
644	{	1055	{
645	dREQ;	1056	dREQ;
646		1057
647	req->type = REQ_OPEN;	1058	req->type = REQ_OPEN;
648	req->data = newSVsv (pathname);	1059	req->data = newSVsv (pathname);
649	req->dataptr = SvPVbyte_nolen (req->data);	1060	req->dataptr = SvPVbyte_nolen (req->data);
650	req->fd = flags;	1061	req->fd = flags;
651	req->mode = mode;	1062	req->mode = mode;
652		1063
653	send_req (req);	1064	REQ_SEND;
654	}	1065	}
655		1066
656	void	1067	void
657	aio_close(fh,callback=&PL_sv_undef)	1068	aio_close (fh,callback=&PL_sv_undef)
658	SV * fh	1069	SV * fh
659	SV * callback	1070	SV * callback
660	PROTOTYPE: $;$	1071	PROTOTYPE: $;$
661	ALIAS:	1072	ALIAS:
662	aio_close = REQ_CLOSE	1073	aio_close = REQ_CLOSE
663	aio_fsync = REQ_FSYNC	1074	aio_fsync = REQ_FSYNC
664	aio_fdatasync = REQ_FDATASYNC	1075	aio_fdatasync = REQ_FDATASYNC
665	CODE:	1076	PPCODE:
666	{	1077	{
667	dREQ;	1078	dREQ;
668		1079
669	req->type = ix;	1080	req->type = ix;
670	req->fh = newSVsv (fh);	1081	req->fh = newSVsv (fh);
671	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1082	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
672		1083
673	send_req (req);	1084	REQ_SEND (req);
674	}	1085	}
675		1086
676	void	1087	void
677	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1088	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)
678	SV * fh	1089	SV * fh
679	UV offset	1090	UV offset
680	UV length	1091	UV length
681	SV * data	1092	SV * data
682	UV dataoffset	1093	UV dataoffset
683	SV * callback	1094	SV * callback
684	ALIAS:	1095	ALIAS:
685	aio_read = REQ_READ	1096	aio_read = REQ_READ
686	aio_write = REQ_WRITE	1097	aio_write = REQ_WRITE
687	PROTOTYPE: $$$$$;$	1098	PROTOTYPE: $$$$$;$
688	CODE:	1099	PPCODE:
689	{	1100	{
690	aio_req req;	1101	aio_req req;
691	STRLEN svlen;	1102	STRLEN svlen;
692	char *svptr = SvPVbyte (data, svlen);	1103	char *svptr = SvPVbyte (data, svlen);
693		1104
…		…
731	{	1142	{
732	SvREADONLY_on (data);	1143	SvREADONLY_on (data);
733	req->data2ptr = (void *)data;	1144	req->data2ptr = (void *)data;
734	}	1145	}
735		1146
736	send_req (req);	1147	REQ_SEND;
737	}	1148	}
738	}	1149	}
739		1150
740	void	1151	void
741	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1152	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)
742	SV * out_fh	1153	SV * out_fh
743	SV * in_fh	1154	SV * in_fh
744	UV in_offset	1155	UV in_offset
745	UV length	1156	UV length
746	SV * callback	1157	SV * callback
747	PROTOTYPE: $$$$;$	1158	PROTOTYPE: $$$$;$
748	CODE:	1159	PPCODE:
749	{	1160	{
750	dREQ;	1161	dREQ;
751		1162
752	req->type = REQ_SENDFILE;	1163	req->type = REQ_SENDFILE;
753	req->fh = newSVsv (out_fh);	1164	req->fh = newSVsv (out_fh);
…		…
755	req->fh2 = newSVsv (in_fh);	1166	req->fh2 = newSVsv (in_fh);
756	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1167	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
757	req->offset = in_offset;	1168	req->offset = in_offset;
758	req->length = length;	1169	req->length = length;
759		1170
760	send_req (req);	1171	REQ_SEND;
761	}	1172	}
762		1173
763	void	1174	void
764	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1175	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
765	SV * fh	1176	SV * fh
766	UV offset	1177	UV offset
767	IV length	1178	IV length
768	SV * callback	1179	SV * callback
769	PROTOTYPE: $$$;$	1180	PROTOTYPE: $$$;$
770	CODE:	1181	PPCODE:
771	{	1182	{
772	dREQ;	1183	dREQ;
773		1184
774	req->type = REQ_READAHEAD;	1185	req->type = REQ_READAHEAD;
775	req->fh = newSVsv (fh);	1186	req->fh = newSVsv (fh);
776	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1187	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
777	req->offset = offset;	1188	req->offset = offset;
778	req->length = length;	1189	req->length = length;
779		1190
780	send_req (req);	1191	REQ_SEND;
781	}	1192	}
782		1193
783	void	1194	void
784	aio_stat(fh_or_path,callback=&PL_sv_undef)	1195	aio_stat (fh_or_path,callback=&PL_sv_undef)
785	SV * fh_or_path	1196	SV * fh_or_path
786	SV * callback	1197	SV * callback
787	ALIAS:	1198	ALIAS:
788	aio_stat = REQ_STAT	1199	aio_stat = REQ_STAT
789	aio_lstat = REQ_LSTAT	1200	aio_lstat = REQ_LSTAT
790	CODE:	1201	PPCODE:
791	{	1202	{
792	dREQ;	1203	dREQ;
793		1204
794	New (0, req->statdata, 1, Stat_t);	1205	New (0, req->statdata, 1, Stat_t);
795	if (!req->statdata)	1206	if (!req->statdata)
796	{	1207	{
797	free_req (req);	1208	req_free (req);
798	croak ("out of memory during aio_req->statdata allocation");	1209	croak ("out of memory during aio_req->statdata allocation");
799	}	1210	}
800		1211
801	if (SvPOK (fh_or_path))	1212	if (SvPOK (fh_or_path))
802	{	1213	{
…		…
809	req->type = REQ_FSTAT;	1220	req->type = REQ_FSTAT;
810	req->fh = newSVsv (fh_or_path);	1221	req->fh = newSVsv (fh_or_path);
811	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1222	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
812	}	1223	}
813		1224
814	send_req (req);	1225	REQ_SEND;
815	}	1226	}
816		1227
817	void	1228	void
818	aio_unlink(pathname,callback=&PL_sv_undef)	1229	aio_unlink (pathname,callback=&PL_sv_undef)
819	SV * pathname	1230	SV * pathname
820	SV * callback	1231	SV * callback
821	ALIAS:	1232	ALIAS:
822	aio_unlink = REQ_UNLINK	1233	aio_unlink = REQ_UNLINK
823	aio_rmdir = REQ_RMDIR	1234	aio_rmdir = REQ_RMDIR
		1235	aio_readdir = REQ_READDIR
824	CODE:	1236	PPCODE:
825	{	1237	{
826	dREQ;	1238	dREQ;
827		1239
828	req->type = ix;	1240	req->type = ix;
829	req->data = newSVsv (pathname);	1241	req->data = newSVsv (pathname);
830	req->dataptr = SvPVbyte_nolen (req->data);	1242	req->dataptr = SvPVbyte_nolen (req->data);
831		1243
832	send_req (req);	1244	REQ_SEND;
833	}	1245	}
834		1246
835	void	1247	void
836	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1248	aio_link (oldpath,newpath,callback=&PL_sv_undef)
837	SV * oldpath	1249	SV * oldpath
838	SV * newpath	1250	SV * newpath
839	SV * callback	1251	SV * callback
		1252	ALIAS:
		1253	aio_link = REQ_LINK
		1254	aio_symlink = REQ_SYMLINK
		1255	aio_rename = REQ_RENAME
840	CODE:	1256	PPCODE:
841	{	1257	{
842	dREQ;	1258	dREQ;
843		1259
844	req->type = REQ_SYMLINK;	1260	req->type = ix;
845	req->fh = newSVsv (oldpath);	1261	req->fh = newSVsv (oldpath);
846	req->data2ptr = SvPVbyte_nolen (req->fh);	1262	req->data2ptr = SvPVbyte_nolen (req->fh);
847	req->data = newSVsv (newpath);	1263	req->data = newSVsv (newpath);
848	req->dataptr = SvPVbyte_nolen (req->data);	1264	req->dataptr = SvPVbyte_nolen (req->data);
849		1265
850	send_req (req);	1266	REQ_SEND;
851	}	1267	}
852		1268
853	void	1269	void
		1270	aio_busy (delay,callback=&PL_sv_undef)
		1271	double delay
		1272	SV * callback
		1273	PPCODE:
		1274	{
		1275	dREQ;
		1276
		1277	req->type = REQ_BUSY;
		1278	req->fd = delay < 0. ? 0 : delay;
		1279	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
		1280
		1281	REQ_SEND;
		1282	}
		1283
		1284	void
		1285	aio_group (callback=&PL_sv_undef)
		1286	SV * callback
		1287	PROTOTYPE: ;$
		1288	PPCODE:
		1289	{
		1290	dREQ;
		1291
		1292	req->type = REQ_GROUP;
		1293	req_send (req);
		1294
		1295	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		1296	}
		1297
		1298	void
		1299	aio_nop (callback=&PL_sv_undef)
		1300	SV * callback
		1301	PPCODE:
		1302	{
		1303	dREQ;
		1304
		1305	req->type = REQ_NOP;
		1306
		1307	REQ_SEND;
		1308	}
		1309
		1310	void
		1311	aioreq_pri (int pri = DEFAULT_PRI)
		1312	CODE:
		1313	if (pri < PRI_MIN) pri = PRI_MIN;
		1314	if (pri > PRI_MAX) pri = PRI_MAX;
		1315	next_pri = pri + PRI_BIAS;
		1316
		1317	void
		1318	aioreq_nice (int nice = 0)
		1319	CODE:
		1320	nice = next_pri - nice;
		1321	if (nice < PRI_MIN) nice = PRI_MIN;
		1322	if (nice > PRI_MAX) nice = PRI_MAX;
		1323	next_pri = nice + PRI_BIAS;
		1324
		1325	void
854	flush()	1326	flush ()
855	PROTOTYPE:	1327	PROTOTYPE:
856	CODE:	1328	CODE:
857	while (nreqs)	1329	while (nreqs)
858	{	1330	{
859	poll_wait ();	1331	poll_wait ();
…		…
899	CODE:	1371	CODE:
900	RETVAL = nreqs;	1372	RETVAL = nreqs;
901	OUTPUT:	1373	OUTPUT:
902	RETVAL	1374	RETVAL
903		1375
		1376	PROTOTYPES: DISABLE
		1377
		1378	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1379
		1380	void
		1381	cancel (aio_req_ornot req)
		1382	CODE:
		1383	req_cancel (req);
		1384
		1385	void
		1386	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1387	CODE:
		1388	SvREFCNT_dec (req->callback);
		1389	req->callback = newSVsv (callback);
		1390
		1391	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1392
		1393	void
		1394	add (aio_req grp, ...)
		1395	PPCODE:
		1396	{
		1397	int i;
		1398	aio_req req;
		1399
		1400	if (grp->fd == 2)
		1401	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1402
		1403	for (i = 1; i < items; ++i )
		1404	{
		1405	if (GIMME_V != G_VOID)
		1406	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1407
		1408	req = SvAIO_REQ (ST (i));
		1409
		1410	if (req)
		1411	{
		1412	++grp->length;
		1413	req->grp = grp;
		1414
		1415	req->grp_prev = 0;
		1416	req->grp_next = grp->grp_first;
		1417
		1418	if (grp->grp_first)
		1419	grp->grp_first->grp_prev = req;
		1420
		1421	grp->grp_first = req;
		1422	}
		1423	}
		1424	}
		1425
		1426	void
		1427	result (aio_req grp, ...)
		1428	CODE:
		1429	{
		1430	int i;
		1431	AV *av = newAV ();
		1432
		1433	for (i = 1; i < items; ++i )
		1434	av_push (av, newSVsv (ST (i)));
		1435
		1436	SvREFCNT_dec (grp->data);
		1437	grp->data = (SV *)av;
		1438	}
		1439
		1440	void
		1441	limit (aio_req grp, int limit)
		1442	CODE:
		1443	grp->fd2 = limit;
		1444	aio_grp_feed (grp);
		1445
		1446	void
		1447	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1448	CODE:
		1449	{
		1450	SvREFCNT_dec (grp->fh2);
		1451	grp->fh2 = newSVsv (callback);
		1452
		1453	if (grp->fd2 <= 0)
		1454	grp->fd2 = 2;
		1455
		1456	aio_grp_feed (grp);
		1457	}
		1458

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