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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.41 by root, Sat Jun 24 19:14:04 2006 UTC vs.
Revision 1.117 by root, Sat May 10 20:02:09 2008 UTC

1	#define _REENTRANT 1	1	#include "libeio/xthread.h"
		2
2	#include <errno.h>	3	#include <errno.h>
3		4
4	#include "EXTERN.h"	5	#include "EXTERN.h"
5	#include "perl.h"	6	#include "perl.h"
6	#include "XSUB.h"	7	#include "XSUB.h"
7		8
8	#include "autoconf/config.h"
9
10	#include <pthread.h>
11
12	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
13	#include <errno.h>	11	#include <errno.h>
14	#include <sys/types.h>	12	#include <sys/types.h>
15	#include <sys/stat.h>	13	#include <sys/stat.h>
16	#include <limits.h>	14	#include <limits.h>
17	#include <unistd.h>
18	#include <fcntl.h>	15	#include <fcntl.h>
19	#include <signal.h>
20	#include <sched.h>	16	#include <sched.h>
21		17
22	#if HAVE_SENDFILE	18	#ifdef _WIN32
23	# if __linux	19
24	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
25	# elif __freebsd	21	# undef malloc
26	# include <sys/socket.h>	22	# undef free
27	# include <sys/uio.h>	23
28	# elif __hpux	24	// perl overrides all those nice win32 functions
29	# include <sys/socket.h>	25	# undef open
30	# elif __solaris /* not yet */	26	# undef read
31	# include <sys/sendfile.h>	27	# undef write
		28	# undef send
		29	# undef recv
		30	# undef stat
		31	# undef fstat
		32	# define lstat stat
		33	# undef truncate
		34	# undef ftruncate
		35	# undef open
		36	# undef close
		37	# undef unlink
		38	# undef rmdir
		39	# undef rename
		40	# undef lseek
		41
		42	# define chown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchown(a,b,c) (errno = ENOSYS, -1)
		44	# define fchmod(a,b) (errno = ENOSYS, -1)
		45	# define symlink(a,b) (errno = ENOSYS, -1)
		46	# define readlink(a,b,c) (errno = ENOSYS, -1)
		47	# define mknod(a,b,c) (errno = ENOSYS, -1)
		48	# define truncate(a,b) (errno = ENOSYS, -1)
		49	# define ftruncate(fd,o) chsize ((fd), (o))
		50	# define fsync(fd) _commit (fd)
		51	# define opendir(fd) (errno = ENOSYS, 0)
		52	# define readdir(fd) (errno = ENOSYS, -1)
		53	# define closedir(fd) (errno = ENOSYS, -1)
		54	# define mkdir(a,b) mkdir (a)
		55
32	# else	56	#else
33	# error sendfile support requested but not available	57
34	# endif	58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	# define EIO_STRUCT_DIRENT struct dirent
		64
35	#endif	65	#endif
36		66
37	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
38	#ifndef NAME_MAX	68
39	# define NAME_MAX 4096	69	/* use NV for 32 bit perls as it allows larger offsets */
		70	#if IVSIZE >= 8
		71	# define SvVAL64 SvIV
		72	#else
		73	# define SvVAL64 SvNV
40	#endif	74	#endif
41		75
42	#if __ia64	76	static HV *stash;
43	# define STACKSIZE 65536	77	typedef SV SV8; /* byte-sv, used for argument-checking */
44	#else	78
45	# define STACKSIZE 8192	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
46	#endif	80	#define AIO_GRP_KLASS "IO::AIO::GRP"
		81
		82	#define EIO_COMMON \
		83	SV *callback; \
		84	SV *sv1, *sv2; \
		85	STRLEN stroffset; \
		86	SV *self
		87
		88	#include "libeio/eio.h"
		89
		90	static int req_invoke (eio_req *req);
		91	#define EIO_FINISH(req) req_invoke (req)
		92	static void aio_grp_feed (eio_req *grp);
		93	#define EIO_FEED(req) aio_grp_feed (req)
		94	static void req_destroy (eio_req *grp);
		95	#define EIO_DESTROY(req) req_destroy (req)
47		96
48	enum {	97	enum {
49	REQ_QUIT,	98	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
50	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
52	REQ_SENDFILE,
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,
58	};	99	};
59		100
60	typedef struct aio_cb {	101	#include "libeio/eio.c"
61	struct aio_cb *volatile next;
62		102
63	int type;
64
65	/* should receive a cleanup, with unions */
66	int fd, fd2;
67	off_t offset;
68	size_t length;
69	ssize_t result;
70	mode_t mode; /* open */
71	int errorno;
72	SV *data, *callback;
73	SV *fh, *fh2;
74	void *dataptr, *data2ptr;
75	STRLEN dataoffset;
76
77	Stat_t *statdata;
78	} aio_cb;
79
80	typedef aio_cb *aio_req;	103	typedef eio_req *aio_req;
		104	typedef eio_req *aio_req_ornot;
81		105
82	static int started, wanted;	106	static SV *on_next_submit;
83	static volatile int nreqs;	107	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
84	static int max_outstanding = 1<<30;	108	static int max_outstanding;
85	static int respipe [2];
86		109
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90		111
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	112	static void req_destroy (aio_req req);
92	static volatile aio_req ress, rese; /* queue start, queue end */
93
94	static void free_req (aio_req req)	113	static void req_cancel (aio_req req);
95	{
96	if (req->data)
97	SvREFCNT_dec (req->data);
98		114
		115	static void want_poll (void)
		116	{
		117	/* write a dummy byte to the pipe so fh becomes ready */
		118	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		119	}
		120
		121	static void done_poll (void)
		122	{
		123	/* read any signals sent by the worker threads */
		124	char buf [4];
		125	while (respipe_read (respipe [0], buf, 4) == 4)
		126	;
		127	}
		128
		129	/* must be called at most once */
		130	static SV *req_sv (aio_req req, const char *klass)
		131	{
99	if (req->fh)	132	if (!req->self)
100	SvREFCNT_dec (req->fh);
101
102	if (req->fh2)
103	SvREFCNT_dec (req->fh2);
104
105	if (req->statdata)
106	Safefree (req->statdata);
107
108	if (req->callback)
109	SvREFCNT_dec (req->callback);
110
111	if (req->type == REQ_READDIR && req->result >= 0)
112	free (req->data2ptr);
113
114	Safefree (req);
115	}
116
117	static void
118	poll_wait ()
119	{
120	if (nreqs && !ress)
121	{	133	{
122	fd_set rfd;	134	req->self = (SV *)newHV ();
123	FD_ZERO(&rfd);	135	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
124	FD_SET(respipe [0], &rfd);
125
126	select (respipe [0] + 1, &rfd, 0, 0, 0);
127	}	136	}
128	}
129		137
130	static int	138	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
131	poll_cb ()	139	}
		140
		141	static aio_req SvAIO_REQ (SV *sv)
		142	{
		143	MAGIC *mg;
		144
		145	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		146	croak ("object of class " AIO_REQ_KLASS " expected");
		147
		148	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		149
		150	return mg ? (aio_req)mg->mg_ptr : 0;
		151	}
		152
		153	static void aio_grp_feed (aio_req grp)
		154	{
		155	if (grp->sv2 && SvOK (grp->sv2))
		156	{
		157	dSP;
		158
		159	ENTER;
		160	SAVETMPS;
		161	PUSHMARK (SP);
		162	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		163	PUTBACK;
		164	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		165	SPAGAIN;
		166	FREETMPS;
		167	LEAVE;
		168	}
		169	}
		170
		171	static void req_submit (eio_req *req)
		172	{
		173	eio_submit (req);
		174
		175	if (on_next_submit)
		176	{
		177	dSP;
		178	SV *cb = sv_2mortal (on_next_submit);
		179
		180	on_next_submit = 0;
		181
		182	PUSHMARK (SP);
		183	PUTBACK;
		184	call_sv (cb, G_DISCARD | G_EVAL);
		185	}
		186	}
		187
		188	static int req_invoke (eio_req *req)
132	{	189	{
133	dSP;	190	dSP;
134	int count = 0;
135	int do_croak = 0;
136	aio_req req;
137		191
138	for (;;)	192	if (req->flags & FLAG_SV2_RO_OFF)
		193	SvREADONLY_off (req->sv2);
		194
		195	if (!EIO_CANCELLED (req) && SvOK (req->callback))
139	{	196	{
140	pthread_mutex_lock (&reslock);	197	ENTER;
141	req = ress;	198	SAVETMPS;
		199	PUSHMARK (SP);
		200	EXTEND (SP, 1);
142		201
143	if (req)	202	switch (req->type)
144	{	203	{
145	ress = req->next;	204	case EIO_READDIR:
146
147	if (!ress)
148	{
149	/* read any signals sent by the worker threads */
150	char buf [32];
151	while (read (respipe [0], buf, 32) == 32)
152	;
153
154	rese = 0;
155	}
156	}
157
158	pthread_mutex_unlock (&reslock);
159
160	if (!req)
161	break;
162
163	nreqs--;
164
165	if (req->type == REQ_QUIT)
166	started--;
167	else
168	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174
175	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);
177
178	if (req->statdata)
179	{
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
181	PL_laststatval = req->result;
182	PL_statcache = *(req->statdata);
183	}
184
185	ENTER;
186	PUSHMARK (SP);
187
188	if (req->type == REQ_READDIR)
189	{	205	{
190	SV *rv = &PL_sv_undef;	206	SV *rv = &PL_sv_undef;
191		207
192	if (req->result >= 0)	208	if (req->result >= 0)
193	{	209	{
		210	int i;
194	char *buf = req->data2ptr;	211	char *buf = req->ptr2;
195	AV *av = newAV ();	212	AV *av = newAV ();
196		213
197	while (req->result)	214	av_extend (av, req->result - 1);
		215
		216	for (i = 0; i < req->result; ++i)
198	{	217	{
199	SV *sv = newSVpv (buf, 0);	218	SV *sv = newSVpv (buf, 0);
200		219
201	av_push (av, sv);	220	av_store (av, i, sv);
202	buf += SvCUR (sv) + 1;	221	buf += SvCUR (sv) + 1;
203	req->result--;
204	}	222	}
205		223
206	rv = sv_2mortal (newRV_noinc ((SV *)av));	224	rv = sv_2mortal (newRV_noinc ((SV *)av));
207	}	225	}
208		226
209	XPUSHs (rv);	227	PUSHs (rv);
210	}	228	}
211	else	229	break;
		230
		231	case EIO_OPEN:
212	{	232	{
213	XPUSHs (sv_2mortal (newSViv (req->result)));	233	/* convert fd to fh */
		234	SV *fh = &PL_sv_undef;
214		235
215	if (req->type == REQ_OPEN)	236	if (req->result >= 0)
216	{	237	{
217	/* convert fd to fh */	238	GV *gv = (GV *)sv_newmortal ();
		239	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		240	char sym [64];
		241	int symlen;
		242
		243	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		244	gv_init (gv, stash, sym, symlen, 0);
		245
		246	symlen = snprintf (
		247	sym,
		248	sizeof (sym),
		249	"%s&=%d",
		250	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		251	req->result
218	SV *fh;	252	);
219		253
220	PUTBACK;	254	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	255	fh = (SV *)gv;
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}	256	}
		257
		258	PUSHs (fh);
229	}	259	}
230
231	if (SvOK (req->callback))
232	{
233	PUTBACK;
234	call_sv (req->callback, G_VOID | G_EVAL);
235	SPAGAIN;
236
237	if (SvTRUE (ERRSV))
238	{
239	free_req (req);
240	croak (0);
241	}
242	}
243
244	LEAVE;
245
246	errno = errorno;
247	count++;
248	}
249
250	free_req (req);
251	}
252
253	return count;
254	}
255
256	static void *aio_proc(void *arg);
257
258	static void
259	start_thread (void)
260	{
261	sigset_t fullsigset, oldsigset;
262	pthread_t tid;
263	pthread_attr_t attr;
264
265	pthread_attr_init (&attr);
266	pthread_attr_setstacksize (&attr, STACKSIZE);
267	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
268
269	sigfillset (&fullsigset);
270	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
271
272	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
273	started++;
274
275	sigprocmask (SIG_SETMASK, &oldsigset, 0);
276	}
277
278	static void
279	send_req (aio_req req)
280	{
281	while (started < wanted && nreqs >= started)
282	start_thread ();
283
284	nreqs++;
285
286	pthread_mutex_lock (&reqlock);
287
288	req->next = 0;
289
290	if (reqe)
291	{
292	reqe->next = req;
293	reqe = req;
294	}
295	else
296	reqe = reqs = req;
297
298	pthread_cond_signal (&reqwait);
299	pthread_mutex_unlock (&reqlock);
300
301	if (nreqs > max_outstanding)
302	for (;;)
303	{
304	poll_cb ();
305
306	if (nreqs <= max_outstanding)
307	break;
308
309	poll_wait ();
310	}
311	}
312
313	static void
314	end_thread (void)
315	{
316	aio_req req;
317	Newz (0, req, 1, aio_cb);
318	req->type = REQ_QUIT;
319
320	send_req (req);
321	}
322
323	static void min_parallel (int nthreads)
324	{
325	if (wanted < nthreads)
326	wanted = nthreads;
327	}
328
329	static void max_parallel (int nthreads)
330	{
331	int cur = started;
332
333	if (wanted > nthreads)
334	wanted = nthreads;
335
336	while (cur > wanted)
337	{
338	end_thread ();
339	cur--;
340	}
341
342	while (started > wanted)
343	{
344	poll_wait ();
345	poll_cb ();
346	}
347	}
348
349	static void create_pipe ()
350	{
351	if (pipe (respipe))
352	croak ("unable to initialize result pipe");
353
354	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
355	croak ("cannot set result pipe to nonblocking mode");
356
357	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
358	croak ("cannot set result pipe to nonblocking mode");
359	}
360
361	/*****************************************************************************/
362	/* work around various missing functions */
363
364	#if !HAVE_PREADWRITE
365	# define pread aio_pread
366	# define pwrite aio_pwrite
367
368	/*
369	* make our pread/pwrite safe against themselves, but not against
370	* normal read/write by using a mutex. slows down execution a lot,
371	* but that's your problem, not mine.
372	*/
373	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
374
375	static ssize_t
376	pread (int fd, void *buf, size_t count, off_t offset)
377	{
378	ssize_t res;
379	off_t ooffset;
380
381	pthread_mutex_lock (&preadwritelock);
382	ooffset = lseek (fd, 0, SEEK_CUR);
383	lseek (fd, offset, SEEK_SET);
384	res = read (fd, buf, count);
385	lseek (fd, ooffset, SEEK_SET);
386	pthread_mutex_unlock (&preadwritelock);
387
388	return res;
389	}
390
391	static ssize_t
392	pwrite (int fd, void *buf, size_t count, off_t offset)
393	{
394	ssize_t res;
395	off_t ooffset;
396
397	pthread_mutex_lock (&preadwritelock);
398	ooffset = lseek (fd, 0, SEEK_CUR);
399	lseek (fd, offset, SEEK_SET);
400	res = write (fd, buf, count);
401	lseek (fd, offset, SEEK_SET);
402	pthread_mutex_unlock (&preadwritelock);
403
404	return res;
405	}
406	#endif
407
408	#if !HAVE_FDATASYNC
409	# define fdatasync fsync
410	#endif
411
412	#if !HAVE_READAHEAD
413	# define readahead aio_readahead
414
415	static ssize_t
416	readahead (int fd, off_t offset, size_t count)
417	{
418	char readahead_buf[4096];
419
420	while (count > 0)
421	{
422	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
423
424	pread (fd, readahead_buf, len, offset);
425	offset += len;
426	count -= len;
427	}
428
429	errno = 0;
430	}
431	#endif
432
433	#if !HAVE_READDIR_R
434	# define readdir_r aio_readdir_r
435
436	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
437
438	static int
439	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
440	{
441	struct dirent *e;
442	int errorno;
443
444	pthread_mutex_lock (&readdirlock);
445
446	e = readdir (dirp);
447	errorno = errno;
448
449	if (e)
450	{
451	*res = ent;
452	strcpy (ent->d_name, e->d_name);
453	}
454	else
455	*res = 0;
456
457	pthread_mutex_unlock (&readdirlock);
458
459	errno = errorno;
460	return e ? 0 : -1;
461	}
462	#endif
463
464	/* sendfile always needs emulation */
465	static ssize_t
466	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
467	{
468	ssize_t res;
469
470	if (!count)
471	return 0;
472
473	#if HAVE_SENDFILE
474	# if __linux
475	res = sendfile (ofd, ifd, &offset, count);
476
477	# elif __freebsd
478	/*
479	* Of course, the freebsd sendfile is a dire hack with no thoughts
480	* wasted on making it similar to other I/O functions.
481	*/
482	{
483	off_t sbytes;
484	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
485
486	if (res < 0 && sbytes)
487	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
488	res = sbytes;
489	}
490
491	# elif __hpux
492	res = sendfile (ofd, ifd, offset, count, 0, 0);
493
494	# elif __solaris
495	{
496	struct sendfilevec vec;
497	size_t sbytes;
498
499	vec.sfv_fd = ifd;
500	vec.sfv_flag = 0;
501	vec.sfv_off = offset;
502	vec.sfv_len = count;
503
504	res = sendfilev (ofd, &vec, 1, &sbytes);
505
506	if (res < 0 && sbytes)
507	res = sbytes;
508	}
509
510	# endif
511	#else
512	res = -1;
513	errno = ENOSYS;
514	#endif
515
516	if (res < 0
517	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
518	#if __solaris
519	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
520	#endif
521	)
522	)
523	{
524	/* emulate sendfile. this is a major pain in the ass */
525	char buf[4096];
526	res = 0;
527
528	while (count)
529	{
530	ssize_t cnt;
531
532	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
533
534	if (cnt <= 0)
535	{
536	if (cnt && !res) res = -1;
537	break;
538	}
539
540	cnt = write (ofd, buf, cnt);
541
542	if (cnt <= 0)
543	{
544	if (cnt && !res) res = -1;
545	break;
546	}
547
548	offset += cnt;
549	res += cnt;
550	count -= cnt;
551	}
552	}
553
554	return res;
555	}
556
557	/* read a full directory */
558	static int
559	scandir_ (const char *path, void **namesp)
560	{
561	DIR *dirp = opendir (path);
562	union
563	{
564	struct dirent d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566	} u;
567	struct dirent *entp;
568	char *name, *names;
569	int memlen = 4096;
570	int memofs = 0;
571	int res = 0;
572	int errorno;
573
574	if (!dirp)
575	return -1;
576
577	names = malloc (memlen);
578
579	for (;;)
580	{
581	errno = 0, readdir_r (dirp, &u.d, &entp);
582
583	if (!entp)
584	break;
585
586	name = entp->d_name;
587
588	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589	{
590	int len = strlen (name) + 1;
591
592	res++;
593
594	while (memofs + len > memlen)
595	{
596	memlen *= 2;
597	names = realloc (names, memlen);
598	if (!names)
599	break;
600	}
601
602	memcpy (names + memofs, name, len);
603	memofs += len;
604	}
605	}
606
607	errorno = errno;
608	closedir (dirp);
609
610	if (errorno)
611	{
612	free (names);
613	errno = errorno;
614	res = -1;
615	}
616
617	*namesp = (void *)names;
618	return res;
619	}
620
621	/*****************************************************************************/
622
623	static void *
624	aio_proc (void *thr_arg)
625	{
626	aio_req req;
627	int type;
628
629	do
630	{
631	pthread_mutex_lock (&reqlock);
632
633	for (;;)
634	{
635	req = reqs;
636
637	if (reqs)
638	{
639	reqs = reqs->next;
640	if (!reqs) reqe = 0;
641	}
642
643	if (req)
644	break;	260	break;
645		261
646	pthread_cond_wait (&reqwait, &reqlock);	262	case EIO_GROUP:
647	}	263	req->int1 = 2; /* mark group as finished */
648		264
649	pthread_mutex_unlock (&reqlock);	265	if (req->sv1)
650
651	errno = 0; /* strictly unnecessary */
652
653	type = req->type;
654
655	switch (type)
656	{	266	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	267	int i;
658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	268	AV *av = (AV *)req->sv1;
659		269
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	270	EXTEND (SP, AvFILL (av) + 1);
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	271	for (i = 0; i <= AvFILL (av); ++i)
662		272	PUSHs (*av_fetch (av, i, 0));
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	273	}
664	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
665	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
666
667	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
668	case REQ_CLOSE: req->result = close (req->fd); break;
669	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
670	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
671	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
672	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
673	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
674
675	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
676	case REQ_FSYNC: req->result = fsync (req->fd); break;
677	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
678
679	case REQ_QUIT:
680	break;	274	break;
681		275
		276	case EIO_NOP:
		277	case EIO_BUSY:
		278	break;
		279
		280	case EIO_READLINK:
		281	if (req->result > 0)
		282	{
		283	SvCUR_set (req->sv2, req->result);
		284	*SvEND (req->sv2) = 0;
		285	PUSHs (req->sv2);
		286	}
		287	break;
		288
		289	case EIO_STAT:
		290	case EIO_LSTAT:
		291	case EIO_FSTAT:
		292	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		293	PL_laststatval = req->result;
		294	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		295	PUSHs (sv_2mortal (newSViv (req->result)));
		296	break;
		297
		298	case EIO_READ:
		299	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		300	*SvEND (req->sv2) = 0;
		301	PUSHs (sv_2mortal (newSViv (req->result)));
		302	break;
		303
		304	case EIO_DUP2:
		305	if (req->result > 0)
		306	req->result = 0;
		307	/* FALLTHROUGH */
		308
682	default:	309	default:
683	req->result = ENOSYS;	310	PUSHs (sv_2mortal (newSViv (req->result)));
684	break;	311	break;
685	}	312	}
686		313
687	req->errorno = errno;	314	errno = req->errorno;
688		315
689	pthread_mutex_lock (&reslock);	316	PUTBACK;
		317	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		318	SPAGAIN;
690		319
691	req->next = 0;	320	FREETMPS;
		321	LEAVE;
692		322
693	if (rese)	323	PUTBACK;
694	{
695	rese->next = req;
696	rese = req;
697	}
698	else
699	{
700	rese = ress = req;
701
702	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);
704	}
705
706	pthread_mutex_unlock (&reslock);
707	}	324	}
708	while (type != REQ_QUIT);
709		325
		326	return !!SvTRUE (ERRSV);
		327	}
		328
		329	static void req_destroy (aio_req req)
		330	{
		331	if (req->self)
		332	{
		333	sv_unmagic (req->self, PERL_MAGIC_ext);
		334	SvREFCNT_dec (req->self);
		335	}
		336
		337	SvREFCNT_dec (req->sv1);
		338	SvREFCNT_dec (req->sv2);
		339	SvREFCNT_dec (req->callback);
		340
		341	Safefree (req);
		342	}
		343
		344	static void req_cancel_subs (aio_req grp)
		345	{
		346	aio_req sub;
		347
		348	if (grp->type != EIO_GROUP)
710	return 0;	349	return;
711	}
712		350
713	/*****************************************************************************/	351	SvREFCNT_dec (grp->sv2);
		352	grp->sv2 = 0;
714		353
715	static void atfork_prepare (void)	354	eio_grp_cancel (grp);
716	{	355	}
717	pthread_mutex_lock (&reqlock);	356
718	pthread_mutex_lock (&reslock);	357	#ifdef USE_SOCKETS_AS_HANDLES
719	#if !HAVE_PREADWRITE	358	# define TO_SOCKET(x) (win32_get_osfhandle (x))
720	pthread_mutex_lock (&preadwritelock);	359	#else
		360	# define TO_SOCKET(x) (x)
721	#endif	361	#endif
722	#if !HAVE_READDIR_R	362
723	pthread_mutex_lock (&readdirlock);	363	static void
		364	create_respipe (void)
		365	{
		366	int old_readfd = respipe [0];
		367
		368	if (respipe [1] >= 0)
		369	respipe_close (TO_SOCKET (respipe [1]));
		370
		371	#ifdef _WIN32
		372	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		373	#else
		374	if (pipe (respipe))
724	#endif	375	#endif
725	}	376	croak ("unable to initialize result pipe");
726		377
727	static void atfork_parent (void)	378	if (old_readfd >= 0)
728	{	379	{
729	#if !HAVE_READDIR_R	380	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
730	pthread_mutex_unlock (&readdirlock);	381	croak ("unable to initialize result pipe(2)");
		382
		383	respipe_close (respipe [0]);
		384	respipe [0] = old_readfd;
		385	}
		386
		387	#ifdef _WIN32
		388	int arg = 1;
		389	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		390	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		391	#else
		392	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		393	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
731	#endif	394	#endif
732	#if !HAVE_PREADWRITE	395	croak ("unable to initialize result pipe(3)");
733	pthread_mutex_unlock (&preadwritelock);	396
734	#endif	397	respipe_osf [0] = TO_SOCKET (respipe [0]);
735	pthread_mutex_unlock (&reslock);	398	respipe_osf [1] = TO_SOCKET (respipe [1]);
736	pthread_mutex_unlock (&reqlock);	399	}
		400
		401	static void poll_wait (void)
		402	{
		403	fd_set rfd;
		404
		405	while (eio_nreqs ())
		406	{
		407	int size;
		408
		409	X_LOCK (reslock);
		410	size = res_queue.size;
		411	X_UNLOCK (reslock);
		412
		413	if (size)
		414	return;
		415
		416	maybe_start_thread ();
		417
		418	FD_ZERO (&rfd);
		419	FD_SET (respipe [0], &rfd);
		420
		421	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		422	}
		423	}
		424
		425	static int poll_cb (void)
		426	{
		427	int res;
		428
		429	do
		430	{
		431	res = eio_poll ();
		432
		433	if (res > 0)
		434	croak (0);
		435	}
		436	while (max_outstanding && max_outstanding <= eio_nreqs ());
		437
		438	return res;
737	}	439	}
738		440
739	static void atfork_child (void)	441	static void atfork_child (void)
740	{	442	{
741	aio_req prv;
742
743	started = 0;
744
745	while (reqs)
746	{
747	prv = reqs;
748	reqs = prv->next;
749	free_req (prv);
750	}
751
752	reqs = reqe = 0;
753
754	while (ress)
755	{
756	prv = ress;
757	ress = prv->next;
758	free_req (prv);
759	}
760
761	ress = rese = 0;
762
763	close (respipe [0]);
764	close (respipe [1]);
765	create_pipe ();	443	create_respipe ();
766
767	atfork_parent ();
768	}	444	}
769		445
770	#define dREQ \	446	#define dREQ \
771	aio_req req; \	447	aio_req req; \
		448	int req_pri = next_pri; \
		449	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
772	\	450	\
773	if (SvOK (callback) && !SvROK (callback)) \	451	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \	452	croak ("callback must be undef or of reference type"); \
775	\	453	\
776	Newz (0, req, 1, aio_cb); \	454	Newz (0, req, 1, eio_req); \
777	if (!req) \	455	if (!req) \
778	croak ("out of memory during aio_req allocation"); \	456	croak ("out of memory during eio_req allocation"); \
779	\	457	\
780	req->callback = newSVsv (callback);	458	req->callback = newSVsv (callback); \
		459	req->pri = req_pri
		460
		461	#define REQ_SEND \
		462	req_submit (req); \
		463	\
		464	if (GIMME_V != G_VOID) \
		465	XPUSHs (req_sv (req, AIO_REQ_KLASS));
781		466
782	MODULE = IO::AIO PACKAGE = IO::AIO	467	MODULE = IO::AIO PACKAGE = IO::AIO
783		468
784	PROTOTYPES: ENABLE	469	PROTOTYPES: ENABLE
785		470
786	BOOT:	471	BOOT:
787	{	472	{
788	HV *stash = gv_stashpv ("IO::AIO", 1);	473	stash = gv_stashpv ("IO::AIO", 1);
		474
789	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	475	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
790	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	476	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
791	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	477	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		478	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		479	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		480	#ifdef _WIN32
		481	X_MUTEX_CHECK (wrklock);
		482	X_MUTEX_CHECK (reslock);
		483	X_MUTEX_CHECK (reqlock);
		484	X_MUTEX_CHECK (reqwait);
		485	X_MUTEX_CHECK (preadwritelock);
		486	X_MUTEX_CHECK (readdirlock);
792		487
793	create_pipe ();	488	X_COND_CHECK (reqwait);
794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	489	#else
795	}	490	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		491	#endif
796		492
		493	create_respipe ();
		494
		495	if (eio_init (want_poll, done_poll) < 0)
		496	croak ("IO::AIO: unable to initialise eio library");
		497
		498	/* atfork child called in fifo order, so before eio's handler */
		499	X_THREAD_ATFORK (0, 0, atfork_child);
		500	}
		501
797	void	502	void
798	min_parallel (nthreads)	503	max_poll_reqs (int nreqs)
799	int nthreads
800	PROTOTYPE: $	504	PROTOTYPE: $
		505	CODE:
		506	eio_set_max_poll_reqs (nreqs);
801		507
802	void	508	void
803	max_parallel (nthreads)	509	max_poll_time (double nseconds)
804	int nthreads
805	PROTOTYPE: $	510	PROTOTYPE: $
806
807	int
808	max_outstanding (nreqs)
809	int nreqs
810	PROTOTYPE: $
811	CODE:	511	CODE:
812	RETVAL = max_outstanding;	512	eio_set_max_poll_time (nseconds);
		513
		514	void
		515	min_parallel (int nthreads)
		516	PROTOTYPE: $
		517	CODE:
		518	eio_set_min_parallel (nthreads);
		519
		520	void
		521	max_parallel (int nthreads)
		522	PROTOTYPE: $
		523	CODE:
		524	eio_set_max_parallel (nthreads);
		525
		526	void
		527	max_idle (int nthreads)
		528	PROTOTYPE: $
		529	CODE:
		530	eio_set_max_idle (nthreads);
		531
		532	void
		533	max_outstanding (int maxreqs)
		534	PROTOTYPE: $
		535	CODE:
813	max_outstanding = nreqs;	536	max_outstanding = maxreqs;
814		537
815	void	538	void
816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	539	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
817	SV * pathname
818	int flags
819	int mode
820	SV * callback
821	PROTOTYPE: $$$;$	540	PROTOTYPE: $$$;$
822	CODE:	541	PPCODE:
823	{	542	{
824	dREQ;	543	dREQ;
825		544
826	req->type = REQ_OPEN;	545	req->type = EIO_OPEN;
827	req->data = newSVsv (pathname);	546	req->sv1 = newSVsv (pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);	547	req->ptr1 = SvPVbyte_nolen (req->sv1);
829	req->fd = flags;	548	req->int1 = flags;
830	req->mode = mode;	549	req->int2 = mode;
831		550
832	send_req (req);	551	REQ_SEND;
833	}	552	}
834		553
835	void	554	void
836	aio_close (fh,callback=&PL_sv_undef)	555	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
837	SV * fh
838	SV * callback
839	PROTOTYPE: $;$	556	PROTOTYPE: $;$
840	ALIAS:	557	ALIAS:
841	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	558	aio_fsync = EIO_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	559	aio_fdatasync = EIO_FDATASYNC
844	CODE:	560	PPCODE:
845	{	561	{
846	dREQ;	562	dREQ;
847		563
848	req->type = ix;	564	req->type = ix;
849	req->fh = newSVsv (fh);	565	req->sv1 = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
851		567
852	send_req (req);	568	REQ_SEND (req);
853	}	569	}
854		570
855	void	571	void
		572	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		573	PROTOTYPE: $;$
		574	PPCODE:
		575	{
		576	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		577	dREQ;
		578
		579	if (close_pipe < 0)
		580	{
		581	int pipefd [2];
		582
		583	if (pipe (pipefd) < 0
		584	|| close (pipefd [1]) < 0
		585	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		586	abort (); /*D*/
		587
		588	close_pipe = pipefd [0];
		589	}
		590
		591	req->type = EIO_DUP2;
		592	req->int1 = close_pipe;
		593	req->sv2 = newSVsv (fh);
		594	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		595
		596	REQ_SEND (req);
		597	}
		598
		599	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	600	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
857	SV * fh
858	UV offset
859	UV length
860	SV * data
861	UV dataoffset
862	SV * callback
863	ALIAS:	601	ALIAS:
864	aio_read = REQ_READ	602	aio_read = EIO_READ
865	aio_write = REQ_WRITE	603	aio_write = EIO_WRITE
866	PROTOTYPE: $$$$$;$	604	PROTOTYPE: $$$$$;$
867	CODE:	605	PPCODE:
868	{	606	{
869	aio_req req;
870	STRLEN svlen;	607	STRLEN svlen;
871	char *svptr = SvPVbyte (data, svlen);	608	char *svptr = SvPVbyte (data, svlen);
		609	UV len = SvUV (length);
872		610
873	SvUPGRADE (data, SVt_PV);	611	SvUPGRADE (data, SVt_PV);
874	SvPOK_on (data);	612	SvPOK_on (data);
875		613
876	if (dataoffset < 0)	614	if (dataoffset < 0)
877	dataoffset += svlen;	615	dataoffset += svlen;
878		616
879	if (dataoffset < 0 || dataoffset > svlen)	617	if (dataoffset < 0 || dataoffset > svlen)
880	croak ("data offset outside of string");	618	croak ("dataoffset outside of data scalar");
881		619
882	if (ix == REQ_WRITE)	620	if (ix == EIO_WRITE)
883	{	621	{
884	/* write: check length and adjust. */	622	/* write: check length and adjust. */
885	if (length < 0 || length + dataoffset > svlen)	623	if (!SvOK (length) || len + dataoffset > svlen)
886	length = svlen - dataoffset;	624	len = svlen - dataoffset;
887	}	625	}
888	else	626	else
889	{	627	{
890	/* read: grow scalar as necessary */	628	/* read: grow scalar as necessary */
891	svptr = SvGROW (data, length + dataoffset);	629	svptr = SvGROW (data, len + dataoffset + 1);
892	}	630	}
893		631
894	if (length < 0)	632	if (len < 0)
895	croak ("length must not be negative");	633	croak ("length must not be negative");
896		634
897	{	635	{
898	dREQ;	636	dREQ;
899		637
900	req->type = ix;	638	req->type = ix;
901	req->fh = newSVsv (fh);	639	req->sv1 = newSVsv (fh);
902	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	640	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
903	: IoOFP (sv_2io (fh)));	641	: IoOFP (sv_2io (fh)));
		642	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
904	req->offset = offset;	643	req->size = len;
905	req->length = length;
906	req->data = SvREFCNT_inc (data);	644	req->sv2 = SvREFCNT_inc (data);
907	req->dataptr = (char *)svptr + dataoffset;	645	req->ptr2 = (char *)svptr + dataoffset;
		646	req->stroffset = dataoffset;
908		647
909	if (!SvREADONLY (data))	648	if (!SvREADONLY (data))
910	{	649	{
911	SvREADONLY_on (data);	650	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	651	req->flags |= FLAG_SV2_RO_OFF;
913	}	652	}
914		653
915	send_req (req);	654	REQ_SEND;
916	}	655	}
917	}	656	}
918		657
919	void	658	void
		659	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		660	PROTOTYPE: $$;$
		661	PPCODE:
		662	{
		663	SV *data;
		664	dREQ;
		665
		666	data = newSV (NAME_MAX);
		667	SvPOK_on (data);
		668
		669	req->type = EIO_READLINK;
		670	req->sv1 = newSVsv (path);
		671	req->ptr1 = SvPVbyte_nolen (req->sv1);
		672	req->sv2 = data;
		673	req->ptr2 = SvPVbyte_nolen (data);
		674
		675	REQ_SEND;
		676	}
		677
		678	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	679	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
921	SV * out_fh
922	SV * in_fh
923	UV in_offset
924	UV length
925	SV * callback
926	PROTOTYPE: $$$$;$	680	PROTOTYPE: $$$$;$
927	CODE:	681	PPCODE:
928	{	682	{
929	dREQ;	683	dREQ;
930		684
931	req->type = REQ_SENDFILE;	685	req->type = EIO_SENDFILE;
932	req->fh = newSVsv (out_fh);	686	req->sv1 = newSVsv (out_fh);
933	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	687	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
934	req->fh2 = newSVsv (in_fh);	688	req->sv2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	689	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936	req->offset = in_offset;	690	req->offs = SvVAL64 (in_offset);
937	req->length = length;	691	req->size = length;
938		692
939	send_req (req);	693	REQ_SEND;
940	}	694	}
941		695
942	void	696	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	697	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
944	SV * fh
945	UV offset
946	IV length
947	SV * callback
948	PROTOTYPE: $$$;$	698	PROTOTYPE: $$$;$
949	CODE:	699	PPCODE:
950	{	700	{
951	dREQ;	701	dREQ;
952		702
953	req->type = REQ_READAHEAD;	703	req->type = EIO_READAHEAD;
954	req->fh = newSVsv (fh);	704	req->sv1 = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	705	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
956	req->offset = offset;	706	req->offs = SvVAL64 (offset);
957	req->length = length;	707	req->size = length;
958		708
959	send_req (req);	709	REQ_SEND;
960	}	710	}
961		711
962	void	712	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	713	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
964	SV * fh_or_path
965	SV * callback
966	ALIAS:	714	ALIAS:
967	aio_stat = REQ_STAT	715	aio_stat = EIO_STAT
968	aio_lstat = REQ_LSTAT	716	aio_lstat = EIO_LSTAT
969	CODE:	717	PPCODE:
970	{	718	{
971	dREQ;	719	dREQ;
972		720
973	New (0, req->statdata, 1, Stat_t);	721	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
974	if (!req->statdata)	722	if (!req->ptr2)
975	{	723	{
976	free_req (req);	724	req_destroy (req);
977	croak ("out of memory during aio_req->statdata allocation");	725	croak ("out of memory during aio_stat statdata allocation");
978	}	726	}
		727
		728	req->flags |= EIO_FLAG_PTR2_FREE;
		729	req->sv1 = newSVsv (fh_or_path);
979		730
980	if (SvPOK (fh_or_path))	731	if (SvPOK (fh_or_path))
981	{	732	{
982	req->type = ix;	733	req->type = ix;
983	req->data = newSVsv (fh_or_path);
984	req->dataptr = SvPVbyte_nolen (req->data);	734	req->ptr1 = SvPVbyte_nolen (req->sv1);
985	}	735	}
986	else	736	else
987	{	737	{
988	req->type = REQ_FSTAT;	738	req->type = EIO_FSTAT;
989	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	739	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		740	}
		741
		742	REQ_SEND;
		743	}
		744
		745	void
		746	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		747	PPCODE:
		748	{
		749	dREQ;
		750
		751	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		752	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		753	req->sv1 = newSVsv (fh_or_path);
		754
		755	if (SvPOK (fh_or_path))
991	}	756	{
		757	req->type = EIO_UTIME;
		758	req->ptr1 = SvPVbyte_nolen (req->sv1);
		759	}
		760	else
		761	{
		762	req->type = EIO_FUTIME;
		763	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		764	}
992		765
993	send_req (req);	766	REQ_SEND;
994	}	767	}
995		768
996	void	769	void
		770	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		771	PPCODE:
		772	{
		773	dREQ;
		774
		775	req->sv1 = newSVsv (fh_or_path);
		776	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		777
		778	if (SvPOK (fh_or_path))
		779	{
		780	req->type = EIO_TRUNCATE;
		781	req->ptr1 = SvPVbyte_nolen (req->sv1);
		782	}
		783	else
		784	{
		785	req->type = EIO_FTRUNCATE;
		786	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		787	}
		788
		789	REQ_SEND;
		790	}
		791
		792	void
		793	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		794	ALIAS:
		795	aio_chmod = EIO_CHMOD
		796	aio_fchmod = EIO_FCHMOD
		797	aio_mkdir = EIO_MKDIR
		798	PPCODE:
		799	{
		800	dREQ;
		801
		802	req->type = ix;
		803	req->int2 = mode;
		804	req->sv1 = newSVsv (fh_or_path);
		805
		806	if (ix == EIO_FCHMOD)
		807	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		808	else
		809	req->ptr1 = SvPVbyte_nolen (req->sv1);
		810
		811	REQ_SEND;
		812	}
		813
		814	void
		815	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		816	PPCODE:
		817	{
		818	dREQ;
		819
		820	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		821	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		822	req->sv1 = newSVsv (fh_or_path);
		823
		824	if (SvPOK (fh_or_path))
		825	{
		826	req->type = EIO_CHOWN;
		827	req->ptr1 = SvPVbyte_nolen (req->sv1);
		828	}
		829	else
		830	{
		831	req->type = EIO_FCHOWN;
		832	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		833	}
		834
		835	REQ_SEND;
		836	}
		837
		838	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	839	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
998	SV * pathname
999	SV * callback
1000	ALIAS:	840	ALIAS:
1001	aio_unlink = REQ_UNLINK	841	aio_unlink = EIO_UNLINK
1002	aio_rmdir = REQ_RMDIR	842	aio_rmdir = EIO_RMDIR
1003	aio_readdir = REQ_READDIR	843	aio_readdir = EIO_READDIR
1004	CODE:	844	PPCODE:
1005	{	845	{
1006	dREQ;	846	dREQ;
1007		847
1008	req->type = ix;	848	req->type = ix;
1009	req->data = newSVsv (pathname);	849	req->sv1 = newSVsv (pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);	850	req->ptr1 = SvPVbyte_nolen (req->sv1);
1011
1012	send_req (req);
1013	}
1014		851
		852	REQ_SEND;
		853	}
		854
1015	void	855	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	856	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1017	SV * oldpath
1018	SV * newpath
1019	SV * callback
1020	ALIAS:	857	ALIAS:
1021	aio_link = REQ_LINK	858	aio_link = EIO_LINK
1022	aio_symlink = REQ_SYMLINK	859	aio_symlink = EIO_SYMLINK
1023	aio_rename = REQ_RENAME	860	aio_rename = EIO_RENAME
1024	CODE:	861	PPCODE:
1025	{	862	{
1026	dREQ;	863	dREQ;
1027		864
1028	req->type = ix;	865	req->type = ix;
1029	req->fh = newSVsv (oldpath);	866	req->sv1 = newSVsv (oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	867	req->ptr1 = SvPVbyte_nolen (req->sv1);
1031	req->data = newSVsv (newpath);	868	req->sv2 = newSVsv (newpath);
1032	req->dataptr = SvPVbyte_nolen (req->data);	869	req->ptr2 = SvPVbyte_nolen (req->sv2);
1033		870
1034	send_req (req);	871	REQ_SEND;
1035	}	872	}
		873
		874	void
		875	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		876	PPCODE:
		877	{
		878	dREQ;
		879
		880	req->type = EIO_MKNOD;
		881	req->sv1 = newSVsv (pathname);
		882	req->ptr1 = SvPVbyte_nolen (req->sv1);
		883	req->int2 = (mode_t)mode;
		884	req->offs = dev;
		885
		886	REQ_SEND;
		887	}
		888
		889	void
		890	aio_busy (double delay, SV *callback=&PL_sv_undef)
		891	PPCODE:
		892	{
		893	dREQ;
		894
		895	req->type = EIO_BUSY;
		896	req->nv1 = delay < 0. ? 0. : delay;
		897
		898	REQ_SEND;
		899	}
		900
		901	void
		902	aio_group (SV *callback=&PL_sv_undef)
		903	PROTOTYPE: ;$
		904	PPCODE:
		905	{
		906	dREQ;
		907
		908	req->type = EIO_GROUP;
		909
		910	eio_submit (req);
		911	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		912	}
		913
		914	void
		915	aio_nop (SV *callback=&PL_sv_undef)
		916	ALIAS:
		917	aio_nop = EIO_NOP
		918	aio_sync = EIO_SYNC
		919	PPCODE:
		920	{
		921	dREQ;
		922
		923	req->type = ix;
		924
		925	REQ_SEND;
		926	}
		927
		928	int
		929	aioreq_pri (int pri = 0)
		930	PROTOTYPE: ;$
		931	CODE:
		932	RETVAL = next_pri - EIO_PRI_BIAS;
		933	if (items > 0)
		934	{
		935	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		936	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		937	next_pri = pri + EIO_PRI_BIAS;
		938	}
		939	OUTPUT:
		940	RETVAL
		941
		942	void
		943	aioreq_nice (int nice = 0)
		944	CODE:
		945	nice = next_pri - nice;
		946	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		947	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		948	next_pri = nice + EIO_PRI_BIAS;
1036		949
1037	void	950	void
1038	flush ()	951	flush ()
1039	PROTOTYPE:	952	PROTOTYPE:
1040	CODE:	953	CODE:
1041	while (nreqs)	954	while (eio_nreqs ())
1042	{	955	{
1043	poll_wait ();	956	poll_wait ();
1044	poll_cb ();	957	poll_cb ();
1045	}	958	}
1046		959
1047	void	960	int
1048	poll()	961	poll()
1049	PROTOTYPE:	962	PROTOTYPE:
1050	CODE:	963	CODE:
1051	if (nreqs)
1052	{
1053	poll_wait ();	964	poll_wait ();
1054	poll_cb ();	965	RETVAL = poll_cb ();
1055	}	966	OUTPUT:
		967	RETVAL
1056		968
1057	int	969	int
1058	poll_fileno()	970	poll_fileno()
1059	PROTOTYPE:	971	PROTOTYPE:
1060	CODE:	972	CODE:
…		…
1072		984
1073	void	985	void
1074	poll_wait()	986	poll_wait()
1075	PROTOTYPE:	987	PROTOTYPE:
1076	CODE:	988	CODE:
1077	if (nreqs)
1078	poll_wait ();	989	poll_wait ();
1079		990
1080	int	991	int
1081	nreqs()	992	nreqs()
1082	PROTOTYPE:	993	PROTOTYPE:
1083	CODE:	994	CODE:
1084	RETVAL = nreqs;	995	RETVAL = eio_nreqs ();
1085	OUTPUT:	996	OUTPUT:
1086	RETVAL	997	RETVAL
1087		998
		999	int
		1000	nready()
		1001	PROTOTYPE:
		1002	CODE:
		1003	RETVAL = eio_nready ();
		1004	OUTPUT:
		1005	RETVAL
		1006
		1007	int
		1008	npending()
		1009	PROTOTYPE:
		1010	CODE:
		1011	RETVAL = eio_npending ();
		1012	OUTPUT:
		1013	RETVAL
		1014
		1015	int
		1016	nthreads()
		1017	PROTOTYPE:
		1018	CODE:
		1019	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1020	RETVAL = started;
		1021	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1022	OUTPUT:
		1023	RETVAL
		1024
		1025	void _on_next_submit (SV *cb)
		1026	CODE:
		1027	SvREFCNT_dec (on_next_submit);
		1028	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1029
		1030	PROTOTYPES: DISABLE
		1031
		1032	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1033
		1034	void
		1035	cancel (aio_req_ornot req)
		1036	CODE:
		1037	eio_cancel (req);
		1038
		1039	void
		1040	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1041	CODE:
		1042	SvREFCNT_dec (req->callback);
		1043	req->callback = newSVsv (callback);
		1044
		1045	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1046
		1047	void
		1048	add (aio_req grp, ...)
		1049	PPCODE:
		1050	{
		1051	int i;
		1052
		1053	if (grp->int1 == 2)
		1054	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1055
		1056	for (i = 1; i < items; ++i )
		1057	{
		1058	aio_req req;
		1059
		1060	if (GIMME_V != G_VOID)
		1061	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1062
		1063	req = SvAIO_REQ (ST (i));
		1064
		1065	if (req)
		1066	eio_grp_add (grp, req);
		1067	}
		1068	}
		1069
		1070	void
		1071	cancel_subs (aio_req_ornot req)
		1072	CODE:
		1073	req_cancel_subs (req);
		1074
		1075	void
		1076	result (aio_req grp, ...)
		1077	CODE:
		1078	{
		1079	int i;
		1080	AV *av;
		1081
		1082	grp->errorno = errno;
		1083
		1084	av = newAV ();
		1085
		1086	for (i = 1; i < items; ++i )
		1087	av_push (av, newSVsv (ST (i)));
		1088
		1089	SvREFCNT_dec (grp->sv1);
		1090	grp->sv1 = (SV *)av;
		1091	}
		1092
		1093	void
		1094	errno (aio_req grp, int errorno = errno)
		1095	CODE:
		1096	grp->errorno = errorno;
		1097
		1098	void
		1099	limit (aio_req grp, int limit)
		1100	CODE:
		1101	eio_grp_limit (grp, limit);
		1102
		1103	void
		1104	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1105	CODE:
		1106	{
		1107	SvREFCNT_dec (grp->sv2);
		1108	grp->sv2 = newSVsv (callback);
		1109
		1110	if (grp->int2 <= 0)
		1111	grp->int2 = 2;
		1112
		1113	eio_grp_limit (grp, grp->int2);
		1114	}
		1115

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