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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.40 by root, Sat Jun 24 16:27:02 2006 UTC vs.
Revision 1.118 by root, Sun May 11 00:01:03 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>
		11	#include <errno.h>
13	#include <sys/types.h>	12	#include <sys/types.h>
14	#include <sys/stat.h>	13	#include <sys/stat.h>
15	#include <limits.h>	14	#include <limits.h>
16	#include <unistd.h>
17	#include <fcntl.h>	15	#include <fcntl.h>
18	#include <signal.h>
19	#include <sched.h>	16	#include <sched.h>
20		17
21	#if HAVE_SENDFILE	18	/* perl namespace pollution */
22	# if __linux	19	#undef VERSION
23	# include <sys/sendfile.h>	20
24	# elif __freebsd	21	#ifdef _WIN32
25	# include <sys/socket.h>	22
26	# include <sys/uio.h>	23	# define EIO_STRUCT_DIRENT Direntry_t
27	# elif __hpux	24	# undef malloc
28	# include <sys/socket.h>	25	# undef free
29	# elif __solaris /* not yet */	26
30	# include <sys/sendfile.h>	27	// perl overrides all those nice win32 functions
		28	# undef open
		29	# undef read
		30	# undef write
		31	# undef send
		32	# undef recv
		33	# undef stat
		34	# undef fstat
		35	# define lstat stat
		36	# undef truncate
		37	# undef ftruncate
		38	# undef open
		39	# undef close
		40	# undef unlink
		41	# undef rmdir
		42	# undef rename
		43	# undef lseek
		44
		45	# define chown(a,b,c) (errno = ENOSYS, -1)
		46	# define fchown(a,b,c) (errno = ENOSYS, -1)
		47	# define fchmod(a,b) (errno = ENOSYS, -1)
		48	# define symlink(a,b) (errno = ENOSYS, -1)
		49	# define readlink(a,b,c) (errno = ENOSYS, -1)
		50	# define mknod(a,b,c) (errno = ENOSYS, -1)
		51	# define truncate(a,b) (errno = ENOSYS, -1)
		52	# define ftruncate(fd,o) chsize ((fd), (o))
		53	# define fsync(fd) _commit (fd)
		54	# define opendir(fd) (errno = ENOSYS, 0)
		55	# define readdir(fd) (errno = ENOSYS, -1)
		56	# define closedir(fd) (errno = ENOSYS, -1)
		57	# define mkdir(a,b) mkdir (a)
		58
31	# else	59	#else
32	# error sendfile support requested but not available	60
33	# endif	61	# include <sys/time.h>
		62	# include <sys/select.h>
		63	# include <unistd.h>
		64	# include <utime.h>
		65	# include <signal.h>
		66	# define EIO_STRUCT_DIRENT struct dirent
		67
34	#endif	68	#endif
35		69
36	/* used for struct dirent, AIX doesn't provide it */	70	#define EIO_STRUCT_STAT Stat_t
37	#ifndef NAME_MAX	71
38	# define NAME_MAX 4096	72	/* use NV for 32 bit perls as it allows larger offsets */
		73	#if IVSIZE >= 8
		74	# define SvVAL64 SvIV
		75	#else
		76	# define SvVAL64 SvNV
39	#endif	77	#endif
40		78
41	#if __ia64	79	static HV *stash;
42	# define STACKSIZE 65536	80	typedef SV SV8; /* byte-sv, used for argument-checking */
43	#else	81
44	# define STACKSIZE 8192	82	#define AIO_REQ_KLASS "IO::AIO::REQ"
45	#endif	83	#define AIO_GRP_KLASS "IO::AIO::GRP"
		84
		85	#define EIO_COMMON \
		86	SV *callback; \
		87	SV *sv1, *sv2; \
		88	STRLEN stroffset; \
		89	SV *self
		90
		91	#include "libeio/eio.h"
		92
		93	static int req_invoke (eio_req *req);
		94	#define EIO_FINISH(req) req_invoke (req)
		95	static void aio_grp_feed (eio_req *grp);
		96	#define EIO_FEED(req) aio_grp_feed (req)
		97	static void req_destroy (eio_req *grp);
		98	#define EIO_DESTROY(req) req_destroy (req)
46		99
47	enum {	100	enum {
48	REQ_QUIT,	101	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
49	REQ_OPEN, REQ_CLOSE,
50	REQ_READ, REQ_WRITE, REQ_READAHEAD,
51	REQ_SENDFILE,
52	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
53	REQ_FSYNC, REQ_FDATASYNC,
54	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
55	REQ_READDIR,
56	REQ_LINK, REQ_SYMLINK,
57	};	102	};
58		103
59	typedef struct aio_cb {	104	#include "libeio/eio.c"
60	struct aio_cb *volatile next;
61		105
62	int type;
63
64	/* should receive a cleanup, with unions */
65	int fd, fd2;
66	off_t offset;
67	size_t length;
68	ssize_t result;
69	mode_t mode; /* open */
70	int errorno;
71	SV *data, *callback;
72	SV *fh, *fh2;
73	void *dataptr, *data2ptr;
74	STRLEN dataoffset;
75
76	Stat_t *statdata;
77	} aio_cb;
78
79	typedef aio_cb *aio_req;	106	typedef eio_req *aio_req;
		107	typedef eio_req *aio_req_ornot;
80		108
81	static int started, wanted;	109	static SV *on_next_submit;
82	static volatile int nreqs;	110	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
83	static int max_outstanding = 1<<30;	111	static int max_outstanding;
84	static int respipe [2];
85		112
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	113	static int respipe_osf [2], respipe [2] = { -1, -1 };
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		114
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	115	static void req_destroy (aio_req req);
91	static volatile aio_req ress, rese; /* queue start, queue end */
92
93	static void free_req (aio_req req)	116	static void req_cancel (aio_req req);
94	{
95	if (req->data)
96	SvREFCNT_dec (req->data);
97		117
		118	static void want_poll (void)
		119	{
		120	/* write a dummy byte to the pipe so fh becomes ready */
		121	respipe_write (respipe_osf [1], (const void *)&respipe_osf, 1);
		122	}
		123
		124	static void done_poll (void)
		125	{
		126	/* read any signals sent by the worker threads */
		127	char buf [4];
		128	while (respipe_read (respipe [0], buf, 4) == 4)
		129	;
		130	}
		131
		132	/* must be called at most once */
		133	static SV *req_sv (aio_req req, const char *klass)
		134	{
98	if (req->fh)	135	if (!req->self)
99	SvREFCNT_dec (req->fh);
100
101	if (req->fh2)
102	SvREFCNT_dec (req->fh2);
103
104	if (req->statdata)
105	Safefree (req->statdata);
106
107	if (req->callback)
108	SvREFCNT_dec (req->callback);
109
110	if (req->type == REQ_READDIR && req->result >= 0)
111	free (req->data2ptr);
112
113	Safefree (req);
114	}
115
116	static void
117	poll_wait ()
118	{
119	if (nreqs && !ress)
120	{	136	{
121	fd_set rfd;	137	req->self = (SV *)newHV ();
122	FD_ZERO(&rfd);	138	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
123	FD_SET(respipe [0], &rfd);
124
125	select (respipe [0] + 1, &rfd, 0, 0, 0);
126	}	139	}
127	}
128		140
129	static int	141	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
130	poll_cb ()	142	}
		143
		144	static aio_req SvAIO_REQ (SV *sv)
		145	{
		146	MAGIC *mg;
		147
		148	if (!sv_derived_from (sv, AIO_REQ_KLASS) || !SvROK (sv))
		149	croak ("object of class " AIO_REQ_KLASS " expected");
		150
		151	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		152
		153	return mg ? (aio_req)mg->mg_ptr : 0;
		154	}
		155
		156	static void aio_grp_feed (aio_req grp)
		157	{
		158	if (grp->sv2 && SvOK (grp->sv2))
		159	{
		160	dSP;
		161
		162	ENTER;
		163	SAVETMPS;
		164	PUSHMARK (SP);
		165	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
		166	PUTBACK;
		167	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		168	SPAGAIN;
		169	FREETMPS;
		170	LEAVE;
		171	}
		172	}
		173
		174	static void req_submit (eio_req *req)
		175	{
		176	eio_submit (req);
		177
		178	if (on_next_submit)
		179	{
		180	dSP;
		181	SV *cb = sv_2mortal (on_next_submit);
		182
		183	on_next_submit = 0;
		184
		185	PUSHMARK (SP);
		186	PUTBACK;
		187	call_sv (cb, G_DISCARD | G_EVAL);
		188	}
		189	}
		190
		191	static int req_invoke (eio_req *req)
131	{	192	{
132	dSP;	193	dSP;
133	int count = 0;
134	int do_croak = 0;
135	aio_req req;
136		194
137	for (;;)	195	if (req->flags & FLAG_SV2_RO_OFF)
		196	SvREADONLY_off (req->sv2);
		197
		198	if (!EIO_CANCELLED (req) && SvOK (req->callback))
138	{	199	{
139	pthread_mutex_lock (&reslock);	200	ENTER;
140	req = ress;	201	SAVETMPS;
		202	PUSHMARK (SP);
		203	EXTEND (SP, 1);
141		204
142	if (req)	205	switch (req->type)
143	{	206	{
144	ress = req->next;	207	case EIO_READDIR:
145
146	if (!ress)
147	{
148	/* read any signals sent by the worker threads */
149	char buf [32];
150	while (read (respipe [0], buf, 32) == 32)
151	;
152
153	rese = 0;
154	}
155	}
156
157	pthread_mutex_unlock (&reslock);
158
159	if (!req)
160	break;
161
162	nreqs--;
163
164	if (req->type == REQ_QUIT)
165	started--;
166	else
167	{
168	int errorno = errno;
169	errno = req->errorno;
170
171	if (req->type == REQ_READ)
172	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
173
174	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
175	SvREADONLY_off (req->data);
176
177	if (req->statdata)
178	{
179	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
180	PL_laststatval = req->result;
181	PL_statcache = *(req->statdata);
182	}
183
184	ENTER;
185	PUSHMARK (SP);
186
187	if (req->type == REQ_READDIR)
188	{	208	{
189	SV *rv = &PL_sv_undef;	209	SV *rv = &PL_sv_undef;
190		210
191	if (req->result >= 0)	211	if (req->result >= 0)
192	{	212	{
		213	int i;
193	char *buf = req->data2ptr;	214	char *buf = req->ptr2;
194	AV *av = newAV ();	215	AV *av = newAV ();
195		216
196	while (req->result)	217	av_extend (av, req->result - 1);
		218
		219	for (i = 0; i < req->result; ++i)
197	{	220	{
198	SV *sv = newSVpv (buf, 0);	221	SV *sv = newSVpv (buf, 0);
199		222
200	av_push (av, sv);	223	av_store (av, i, sv);
201	buf += SvCUR (sv) + 1;	224	buf += SvCUR (sv) + 1;
202	req->result--;
203	}	225	}
204		226
205	rv = sv_2mortal (newRV_noinc ((SV *)av));	227	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}	228	}
207		229
208	XPUSHs (rv);	230	PUSHs (rv);
209	}	231	}
210	else	232	break;
		233
		234	case EIO_OPEN:
211	{	235	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));	236	/* convert fd to fh */
		237	SV *fh = &PL_sv_undef;
213		238
214	if (req->type == REQ_OPEN)	239	if (req->result >= 0)
215	{	240	{
216	/* convert fd to fh */	241	GV *gv = (GV *)sv_newmortal ();
		242	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		243	char sym [64];
		244	int symlen;
		245
		246	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		247	gv_init (gv, stash, sym, symlen, 0);
		248
		249	symlen = snprintf (
		250	sym,
		251	sizeof (sym),
		252	"%s&=%d",
		253	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		254	req->result
217	SV *fh;	255	);
218		256
219	PUTBACK;	257	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
220	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	258	fh = (SV *)gv;
221	SPAGAIN;
222
223	fh = SvREFCNT_inc (POPs);
224
225	PUSHMARK (SP);
226	XPUSHs (sv_2mortal (fh));
227	}	259	}
		260
		261	PUSHs (fh);
228	}	262	}
229
230	if (SvOK (req->callback))
231	{
232	PUTBACK;
233	call_sv (req->callback, G_VOID | G_EVAL);
234	SPAGAIN;
235
236	if (SvTRUE (ERRSV))
237	{
238	free_req (req);
239	croak (0);
240	}
241	}
242
243	LEAVE;
244
245	errno = errorno;
246	count++;
247	}
248
249	free_req (req);
250	}
251
252	return count;
253	}
254
255	static void *aio_proc(void *arg);
256
257	static void
258	start_thread (void)
259	{
260	sigset_t fullsigset, oldsigset;
261	pthread_t tid;
262	pthread_attr_t attr;
263
264	pthread_attr_init (&attr);
265	pthread_attr_setstacksize (&attr, STACKSIZE);
266	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
267
268	sigfillset (&fullsigset);
269	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
270
271	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
272	started++;
273
274	sigprocmask (SIG_SETMASK, &oldsigset, 0);
275	}
276
277	static void
278	send_req (aio_req req)
279	{
280	while (started < wanted && nreqs >= started)
281	start_thread ();
282
283	nreqs++;
284
285	pthread_mutex_lock (&reqlock);
286
287	req->next = 0;
288
289	if (reqe)
290	{
291	reqe->next = req;
292	reqe = req;
293	}
294	else
295	reqe = reqs = req;
296
297	pthread_cond_signal (&reqwait);
298	pthread_mutex_unlock (&reqlock);
299
300	if (nreqs > max_outstanding)
301	for (;;)
302	{
303	poll_cb ();
304
305	if (nreqs <= max_outstanding)
306	break;
307
308	poll_wait ();
309	}
310	}
311
312	static void
313	end_thread (void)
314	{
315	aio_req req;
316	Newz (0, req, 1, aio_cb);
317	req->type = REQ_QUIT;
318
319	send_req (req);
320	}
321
322	static void min_parallel (int nthreads)
323	{
324	if (wanted < nthreads)
325	wanted = nthreads;
326	}
327
328	static void max_parallel (int nthreads)
329	{
330	int cur = started;
331
332	if (wanted > nthreads)
333	wanted = nthreads;
334
335	while (cur > wanted)
336	{
337	end_thread ();
338	cur--;
339	}
340
341	while (started > wanted)
342	{
343	poll_wait ();
344	poll_cb ();
345	}
346	}
347
348	static void create_pipe ()
349	{
350	if (pipe (respipe))
351	croak ("unable to initialize result pipe");
352
353	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
354	croak ("cannot set result pipe to nonblocking mode");
355
356	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
357	croak ("cannot set result pipe to nonblocking mode");
358	}
359
360	/*****************************************************************************/
361	/* work around various missing functions */
362
363	#if !HAVE_PREADWRITE
364	# define pread aio_pread
365	# define pwrite aio_pwrite
366
367	/*
368	* make our pread/pwrite safe against themselves, but not against
369	* normal read/write by using a mutex. slows down execution a lot,
370	* but that's your problem, not mine.
371	*/
372	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
373
374	static ssize_t
375	pread (int fd, void *buf, size_t count, off_t offset)
376	{
377	ssize_t res;
378	off_t ooffset;
379
380	pthread_mutex_lock (&preadwritelock);
381	ooffset = lseek (fd, 0, SEEK_CUR);
382	lseek (fd, offset, SEEK_SET);
383	res = read (fd, buf, count);
384	lseek (fd, ooffset, SEEK_SET);
385	pthread_mutex_unlock (&preadwritelock);
386
387	return res;
388	}
389
390	static ssize_t
391	pwrite (int fd, void *buf, size_t count, off_t offset)
392	{
393	ssize_t res;
394	off_t ooffset;
395
396	pthread_mutex_lock (&preadwritelock);
397	ooffset = lseek (fd, 0, SEEK_CUR);
398	lseek (fd, offset, SEEK_SET);
399	res = write (fd, buf, count);
400	lseek (fd, offset, SEEK_SET);
401	pthread_mutex_unlock (&preadwritelock);
402
403	return res;
404	}
405	#endif
406
407	#if !HAVE_FDATASYNC
408	# define fdatasync fsync
409	#endif
410
411	#if !HAVE_READAHEAD
412	# define readahead aio_readahead
413
414	static ssize_t
415	readahead (int fd, off_t offset, size_t count)
416	{
417	char readahead_buf[4096];
418
419	while (count > 0)
420	{
421	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
422
423	pread (fd, readahead_buf, len, offset);
424	offset += len;
425	count -= len;
426	}
427
428	errno = 0;
429	}
430	#endif
431
432	#if !HAVE_READDIR_R
433	# define readdir_r aio_readdir_r
434
435	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
436
437	static int
438	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
439	{
440	struct dirent *e;
441	int errorno;
442
443	pthread_mutex_lock (&readdirlock);
444
445	e = readdir (dirp);
446	errorno = errno;
447
448	if (e)
449	{
450	*res = ent;
451	strcpy (ent->d_name, e->d_name);
452	}
453	else
454	*res = 0;
455
456	pthread_mutex_unlock (&readdirlock);
457
458	errno = errorno;
459	return e ? 0 : -1;
460	}
461	#endif
462
463	/* sendfile always needs emulation */
464	static ssize_t
465	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
466	{
467	ssize_t res;
468
469	if (!count)
470	return 0;
471
472	#if HAVE_SENDFILE
473	# if __linux
474	res = sendfile (ofd, ifd, &offset, count);
475
476	# elif __freebsd
477	/*
478	* Of course, the freebsd sendfile is a dire hack with no thoughts
479	* wasted on making it similar to other I/O functions.
480	*/
481	{
482	off_t sbytes;
483	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
484
485	if (res < 0 && sbytes)
486	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
487	res = sbytes;
488	}
489
490	# elif __hpux
491	res = sendfile (ofd, ifd, offset, count, 0, 0);
492
493	# elif __solaris
494	{
495	struct sendfilevec vec;
496	size_t sbytes;
497
498	vec.sfv_fd = ifd;
499	vec.sfv_flag = 0;
500	vec.sfv_off = offset;
501	vec.sfv_len = count;
502
503	res = sendfilev (ofd, &vec, 1, &sbytes);
504
505	if (res < 0 && sbytes)
506	res = sbytes;
507	}
508
509	# endif
510	#else
511	res = -1;
512	errno = ENOSYS;
513	#endif
514
515	if (res < 0
516	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
517	#if __solaris
518	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
519	#endif
520	)
521	)
522	{
523	/* emulate sendfile. this is a major pain in the ass */
524	char buf[4096];
525	res = 0;
526
527	while (count)
528	{
529	ssize_t cnt;
530
531	cnt = pread (ifd, buf, count > 4096 ? 4096 : count, offset);
532
533	if (cnt <= 0)
534	{
535	if (cnt && !res) res = -1;
536	break;
537	}
538
539	cnt = write (ofd, buf, cnt);
540
541	if (cnt <= 0)
542	{
543	if (cnt && !res) res = -1;
544	break;
545	}
546
547	offset += cnt;
548	res += cnt;
549	count -= cnt;
550	}
551	}
552
553	return res;
554	}
555
556	/* read a full directory */
557	static int
558	scandir_ (const char *path, void **namesp)
559	{
560	DIR *dirp = opendir (path);
561	union
562	{
563	struct dirent d;
564	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
565	} u;
566	struct dirent *entp;
567	char *name, *names;
568	int memlen = 4096;
569	int memofs = 0;
570	int res = 0;
571	int errorno;
572
573	if (!dirp)
574	return -1;
575
576	names = malloc (memlen);
577
578	for (;;)
579	{
580	errno = 0, readdir_r (dirp, &u.d, &entp);
581
582	if (!entp)
583	break;
584
585	name = entp->d_name;
586
587	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
588	{
589	int len = strlen (name) + 1;
590
591	res++;
592
593	while (memofs + len > memlen)
594	{
595	memlen *= 2;
596	names = realloc (names, memlen);
597	if (!names)
598	break;
599	}
600
601	memcpy (names + memofs, name, len);
602	memofs += len;
603	}
604	}
605
606	errorno = errno;
607	closedir (dirp);
608
609	if (errorno)
610	{
611	free (names);
612	errno = errorno;
613	res = -1;
614	}
615
616	*namesp = (void *)names;
617	return res;
618	}
619
620	/*****************************************************************************/
621
622	static void *
623	aio_proc (void *thr_arg)
624	{
625	aio_req req;
626	int type;
627
628	do
629	{
630	pthread_mutex_lock (&reqlock);
631
632	for (;;)
633	{
634	req = reqs;
635
636	if (reqs)
637	{
638	reqs = reqs->next;
639	if (!reqs) reqe = 0;
640	}
641
642	if (req)
643	break;	263	break;
644		264
645	pthread_cond_wait (&reqwait, &reqlock);	265	case EIO_GROUP:
646	}	266	req->int1 = 2; /* mark group as finished */
647		267
648	pthread_mutex_unlock (&reqlock);	268	if (req->sv1)
649
650	errno = 0; /* strictly unnecessary */
651
652	type = req->type;
653
654	switch (type)
655	{	269	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	270	int i;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	271	AV *av = (AV *)req->sv1;
658		272
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	273	EXTEND (SP, AvFILL (av) + 1);
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	274	for (i = 0; i <= AvFILL (av); ++i)
661		275	PUSHs (*av_fetch (av, i, 0));
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	276	}
663	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
664	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
665
666	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
667	case REQ_CLOSE: req->result = close (req->fd); break;
668	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
669	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
670	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;
671	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;
672	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
673
674	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
675	case REQ_FSYNC: req->result = fsync (req->fd); break;
676	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
677
678	case REQ_QUIT:
679	break;	277	break;
680		278
		279	case EIO_NOP:
		280	case EIO_BUSY:
		281	break;
		282
		283	case EIO_READLINK:
		284	if (req->result > 0)
		285	{
		286	SvCUR_set (req->sv2, req->result);
		287	*SvEND (req->sv2) = 0;
		288	PUSHs (req->sv2);
		289	}
		290	break;
		291
		292	case EIO_STAT:
		293	case EIO_LSTAT:
		294	case EIO_FSTAT:
		295	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		296	PL_laststatval = req->result;
		297	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		298	PUSHs (sv_2mortal (newSViv (req->result)));
		299	break;
		300
		301	case EIO_READ:
		302	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		303	*SvEND (req->sv2) = 0;
		304	PUSHs (sv_2mortal (newSViv (req->result)));
		305	break;
		306
		307	case EIO_DUP2:
		308	if (req->result > 0)
		309	req->result = 0;
		310	/* FALLTHROUGH */
		311
681	default:	312	default:
682	req->result = ENOSYS;	313	PUSHs (sv_2mortal (newSViv (req->result)));
683	break;	314	break;
684	}	315	}
685		316
686	req->errorno = errno;	317	errno = req->errorno;
687		318
688	pthread_mutex_lock (&reslock);	319	PUTBACK;
		320	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		321	SPAGAIN;
689		322
690	req->next = 0;	323	FREETMPS;
		324	LEAVE;
691		325
692	if (rese)	326	PUTBACK;
693	{
694	rese->next = req;
695	rese = req;
696	}
697	else
698	{
699	rese = ress = req;
700
701	/* write a dummy byte to the pipe so fh becomes ready */
702	write (respipe [1], &respipe, 1);
703	}
704
705	pthread_mutex_unlock (&reslock);
706	}	327	}
707	while (type != REQ_QUIT);
708		328
		329	return !!SvTRUE (ERRSV);
		330	}
		331
		332	static void req_destroy (aio_req req)
		333	{
		334	if (req->self)
		335	{
		336	sv_unmagic (req->self, PERL_MAGIC_ext);
		337	SvREFCNT_dec (req->self);
		338	}
		339
		340	SvREFCNT_dec (req->sv1);
		341	SvREFCNT_dec (req->sv2);
		342	SvREFCNT_dec (req->callback);
		343
		344	Safefree (req);
		345	}
		346
		347	static void req_cancel_subs (aio_req grp)
		348	{
		349	aio_req sub;
		350
		351	if (grp->type != EIO_GROUP)
709	return 0;	352	return;
710	}
711		353
712	/*****************************************************************************/	354	SvREFCNT_dec (grp->sv2);
		355	grp->sv2 = 0;
713		356
714	static void atfork_prepare (void)	357	eio_grp_cancel (grp);
715	{	358	}
716	pthread_mutex_lock (&reqlock);	359
717	pthread_mutex_lock (&reslock);	360	#ifdef USE_SOCKETS_AS_HANDLES
718	#if !HAVE_PREADWRITE	361	# define TO_SOCKET(x) (win32_get_osfhandle (x))
719	pthread_mutex_lock (&preadwritelock);	362	#else
		363	# define TO_SOCKET(x) (x)
720	#endif	364	#endif
721	#if !HAVE_READDIR_R	365
722	pthread_mutex_lock (&readdirlock);	366	static void
		367	create_respipe (void)
		368	{
		369	int old_readfd = respipe [0];
		370
		371	if (respipe [1] >= 0)
		372	respipe_close (TO_SOCKET (respipe [1]));
		373
		374	#ifdef _WIN32
		375	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		376	#else
		377	if (pipe (respipe))
723	#endif	378	#endif
724	}	379	croak ("unable to initialize result pipe");
725		380
726	static void atfork_parent (void)	381	if (old_readfd >= 0)
727	{	382	{
728	#if !HAVE_READDIR_R	383	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
729	pthread_mutex_unlock (&readdirlock);	384	croak ("unable to initialize result pipe(2)");
		385
		386	respipe_close (respipe [0]);
		387	respipe [0] = old_readfd;
		388	}
		389
		390	#ifdef _WIN32
		391	int arg = 1;
		392	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		393	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		394	#else
		395	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		396	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
730	#endif	397	#endif
731	#if !HAVE_PREADWRITE	398	croak ("unable to initialize result pipe(3)");
732	pthread_mutex_unlock (&preadwritelock);	399
733	#endif	400	respipe_osf [0] = TO_SOCKET (respipe [0]);
734	pthread_mutex_unlock (&reslock);	401	respipe_osf [1] = TO_SOCKET (respipe [1]);
735	pthread_mutex_unlock (&reqlock);	402	}
		403
		404	static void poll_wait (void)
		405	{
		406	fd_set rfd;
		407
		408	while (eio_nreqs ())
		409	{
		410	int size;
		411
		412	X_LOCK (reslock);
		413	size = res_queue.size;
		414	X_UNLOCK (reslock);
		415
		416	if (size)
		417	return;
		418
		419	maybe_start_thread ();
		420
		421	FD_ZERO (&rfd);
		422	FD_SET (respipe [0], &rfd);
		423
		424	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
		425	}
		426	}
		427
		428	static int poll_cb (void)
		429	{
		430	int res;
		431
		432	do
		433	{
		434	res = eio_poll ();
		435
		436	if (res > 0)
		437	croak (0);
		438	}
		439	while (max_outstanding && max_outstanding <= eio_nreqs ());
		440
		441	return res;
736	}	442	}
737		443
738	static void atfork_child (void)	444	static void atfork_child (void)
739	{	445	{
740	aio_req prv;
741
742	started = 0;
743
744	while (reqs)
745	{
746	prv = reqs;
747	reqs = prv->next;
748	free_req (prv);
749	}
750
751	reqs = reqe = 0;
752
753	while (ress)
754	{
755	prv = ress;
756	ress = prv->next;
757	free_req (prv);
758	}
759
760	ress = rese = 0;
761
762	close (respipe [0]);
763	close (respipe [1]);
764	create_pipe ();	446	create_respipe ();
765
766	atfork_parent ();
767	}	447	}
768		448
769	#define dREQ \	449	#define dREQ \
770	aio_req req; \	450	aio_req req; \
		451	int req_pri = next_pri; \
		452	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
771	\	453	\
772	if (SvOK (callback) && !SvROK (callback)) \	454	if (SvOK (callback) && !SvROK (callback)) \
773	croak ("clalback must be undef or of reference type"); \	455	croak ("callback must be undef or of reference type"); \
774	\	456	\
775	Newz (0, req, 1, aio_cb); \	457	Newz (0, req, 1, eio_req); \
776	if (!req) \	458	if (!req) \
777	croak ("out of memory during aio_req allocation"); \	459	croak ("out of memory during eio_req allocation"); \
778	\	460	\
779	req->callback = newSVsv (callback);	461	req->callback = newSVsv (callback); \
		462	req->pri = req_pri
		463
		464	#define REQ_SEND \
		465	req_submit (req); \
		466	\
		467	if (GIMME_V != G_VOID) \
		468	XPUSHs (req_sv (req, AIO_REQ_KLASS));
780		469
781	MODULE = IO::AIO PACKAGE = IO::AIO	470	MODULE = IO::AIO PACKAGE = IO::AIO
782		471
783	PROTOTYPES: ENABLE	472	PROTOTYPES: ENABLE
784		473
785	BOOT:	474	BOOT:
786	{	475	{
787	create_pipe ();	476	stash = gv_stashpv ("IO::AIO", 1);
788	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
789	}
790		477
		478	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		479	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		480	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		481	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		482	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		483	#ifdef _WIN32
		484	X_MUTEX_CHECK (wrklock);
		485	X_MUTEX_CHECK (reslock);
		486	X_MUTEX_CHECK (reqlock);
		487	X_MUTEX_CHECK (reqwait);
		488	X_MUTEX_CHECK (preadwritelock);
		489	X_MUTEX_CHECK (readdirlock);
		490
		491	X_COND_CHECK (reqwait);
		492	#else
		493	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		494	#endif
		495
		496	create_respipe ();
		497
		498	if (eio_init (want_poll, done_poll) < 0)
		499	croak ("IO::AIO: unable to initialise eio library");
		500
		501	/* atfork child called in fifo order, so before eio's handler */
		502	X_THREAD_ATFORK (0, 0, atfork_child);
		503	}
		504
791	void	505	void
792	min_parallel (nthreads)	506	max_poll_reqs (int nreqs)
793	int nthreads
794	PROTOTYPE: $	507	PROTOTYPE: $
		508	CODE:
		509	eio_set_max_poll_reqs (nreqs);
795		510
796	void	511	void
797	max_parallel (nthreads)	512	max_poll_time (double nseconds)
798	int nthreads
799	PROTOTYPE: $	513	PROTOTYPE: $
800
801	int
802	max_outstanding (nreqs)
803	int nreqs
804	PROTOTYPE: $
805	CODE:	514	CODE:
806	RETVAL = max_outstanding;	515	eio_set_max_poll_time (nseconds);
		516
		517	void
		518	min_parallel (int nthreads)
		519	PROTOTYPE: $
		520	CODE:
		521	eio_set_min_parallel (nthreads);
		522
		523	void
		524	max_parallel (int nthreads)
		525	PROTOTYPE: $
		526	CODE:
		527	eio_set_max_parallel (nthreads);
		528
		529	void
		530	max_idle (int nthreads)
		531	PROTOTYPE: $
		532	CODE:
		533	eio_set_max_idle (nthreads);
		534
		535	void
		536	max_outstanding (int maxreqs)
		537	PROTOTYPE: $
		538	CODE:
807	max_outstanding = nreqs;	539	max_outstanding = maxreqs;
808		540
809	void	541	void
810	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	542	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
811	SV * pathname
812	int flags
813	int mode
814	SV * callback
815	PROTOTYPE: $$$;$	543	PROTOTYPE: $$$;$
816	CODE:	544	PPCODE:
817	{	545	{
818	dREQ;	546	dREQ;
819		547
820	req->type = REQ_OPEN;	548	req->type = EIO_OPEN;
821	req->data = newSVsv (pathname);	549	req->sv1 = newSVsv (pathname);
822	req->dataptr = SvPVbyte_nolen (req->data);	550	req->ptr1 = SvPVbyte_nolen (req->sv1);
823	req->fd = flags;	551	req->int1 = flags;
824	req->mode = mode;	552	req->int2 = mode;
825		553
826	send_req (req);	554	REQ_SEND;
827	}	555	}
828		556
829	void	557	void
830	aio_close (fh,callback=&PL_sv_undef)	558	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
831	SV * fh
832	SV * callback
833	PROTOTYPE: $;$	559	PROTOTYPE: $;$
834	ALIAS:	560	ALIAS:
835	aio_close = REQ_CLOSE
836	aio_fsync = REQ_FSYNC	561	aio_fsync = EIO_FSYNC
837	aio_fdatasync = REQ_FDATASYNC	562	aio_fdatasync = EIO_FDATASYNC
838	CODE:	563	PPCODE:
839	{	564	{
840	dREQ;	565	dREQ;
841		566
842	req->type = ix;	567	req->type = ix;
843	req->fh = newSVsv (fh);	568	req->sv1 = newSVsv (fh);
844	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	569	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
845		570
846	send_req (req);	571	REQ_SEND (req);
847	}	572	}
848		573
849	void	574	void
		575	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		576	PROTOTYPE: $;$
		577	PPCODE:
		578	{
		579	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		580	dREQ;
		581
		582	if (close_pipe < 0)
		583	{
		584	int pipefd [2];
		585
		586	if (pipe (pipefd) < 0
		587	|| close (pipefd [1]) < 0
		588	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		589	abort (); /*D*/
		590
		591	close_pipe = pipefd [0];
		592	}
		593
		594	req->type = EIO_DUP2;
		595	req->int1 = close_pipe;
		596	req->sv2 = newSVsv (fh);
		597	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		598
		599	REQ_SEND (req);
		600	}
		601
		602	void
850	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	603	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
851	SV * fh
852	UV offset
853	UV length
854	SV * data
855	UV dataoffset
856	SV * callback
857	ALIAS:	604	ALIAS:
858	aio_read = REQ_READ	605	aio_read = EIO_READ
859	aio_write = REQ_WRITE	606	aio_write = EIO_WRITE
860	PROTOTYPE: $$$$$;$	607	PROTOTYPE: $$$$$;$
861	CODE:	608	PPCODE:
862	{	609	{
863	aio_req req;
864	STRLEN svlen;	610	STRLEN svlen;
865	char *svptr = SvPVbyte (data, svlen);	611	char *svptr = SvPVbyte (data, svlen);
		612	UV len = SvUV (length);
866		613
867	SvUPGRADE (data, SVt_PV);	614	SvUPGRADE (data, SVt_PV);
868	SvPOK_on (data);	615	SvPOK_on (data);
869		616
870	if (dataoffset < 0)	617	if (dataoffset < 0)
871	dataoffset += svlen;	618	dataoffset += svlen;
872		619
873	if (dataoffset < 0 || dataoffset > svlen)	620	if (dataoffset < 0 || dataoffset > svlen)
874	croak ("data offset outside of string");	621	croak ("dataoffset outside of data scalar");
875		622
876	if (ix == REQ_WRITE)	623	if (ix == EIO_WRITE)
877	{	624	{
878	/* write: check length and adjust. */	625	/* write: check length and adjust. */
879	if (length < 0 || length + dataoffset > svlen)	626	if (!SvOK (length) || len + dataoffset > svlen)
880	length = svlen - dataoffset;	627	len = svlen - dataoffset;
881	}	628	}
882	else	629	else
883	{	630	{
884	/* read: grow scalar as necessary */	631	/* read: grow scalar as necessary */
885	svptr = SvGROW (data, length + dataoffset);	632	svptr = SvGROW (data, len + dataoffset + 1);
886	}	633	}
887		634
888	if (length < 0)	635	if (len < 0)
889	croak ("length must not be negative");	636	croak ("length must not be negative");
890		637
891	{	638	{
892	dREQ;	639	dREQ;
893		640
894	req->type = ix;	641	req->type = ix;
895	req->fh = newSVsv (fh);	642	req->sv1 = newSVsv (fh);
896	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	643	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
897	: IoOFP (sv_2io (fh)));	644	: IoOFP (sv_2io (fh)));
		645	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
898	req->offset = offset;	646	req->size = len;
899	req->length = length;
900	req->data = SvREFCNT_inc (data);	647	req->sv2 = SvREFCNT_inc (data);
901	req->dataptr = (char *)svptr + dataoffset;	648	req->ptr2 = (char *)svptr + dataoffset;
		649	req->stroffset = dataoffset;
902		650
903	if (!SvREADONLY (data))	651	if (!SvREADONLY (data))
904	{	652	{
905	SvREADONLY_on (data);	653	SvREADONLY_on (data);
906	req->data2ptr = (void *)data;	654	req->flags |= FLAG_SV2_RO_OFF;
907	}	655	}
908		656
909	send_req (req);	657	REQ_SEND;
910	}	658	}
911	}	659	}
912		660
913	void	661	void
		662	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		663	PROTOTYPE: $$;$
		664	PPCODE:
		665	{
		666	SV *data;
		667	dREQ;
		668
		669	data = newSV (NAME_MAX);
		670	SvPOK_on (data);
		671
		672	req->type = EIO_READLINK;
		673	req->sv1 = newSVsv (path);
		674	req->ptr1 = SvPVbyte_nolen (req->sv1);
		675	req->sv2 = data;
		676	req->ptr2 = SvPVbyte_nolen (data);
		677
		678	REQ_SEND;
		679	}
		680
		681	void
914	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	682	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
915	SV * out_fh
916	SV * in_fh
917	UV in_offset
918	UV length
919	SV * callback
920	PROTOTYPE: $$$$;$	683	PROTOTYPE: $$$$;$
921	CODE:	684	PPCODE:
922	{	685	{
923	dREQ;	686	dREQ;
924		687
925	req->type = REQ_SENDFILE;	688	req->type = EIO_SENDFILE;
926	req->fh = newSVsv (out_fh);	689	req->sv1 = newSVsv (out_fh);
927	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	690	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
928	req->fh2 = newSVsv (in_fh);	691	req->sv2 = newSVsv (in_fh);
929	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	692	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
930	req->offset = in_offset;	693	req->offs = SvVAL64 (in_offset);
931	req->length = length;	694	req->size = length;
932		695
933	send_req (req);	696	REQ_SEND;
934	}	697	}
935		698
936	void	699	void
937	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	700	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
938	SV * fh
939	UV offset
940	IV length
941	SV * callback
942	PROTOTYPE: $$$;$	701	PROTOTYPE: $$$;$
943	CODE:	702	PPCODE:
944	{	703	{
945	dREQ;	704	dREQ;
946		705
947	req->type = REQ_READAHEAD;	706	req->type = EIO_READAHEAD;
948	req->fh = newSVsv (fh);	707	req->sv1 = newSVsv (fh);
949	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
950	req->offset = offset;	709	req->offs = SvVAL64 (offset);
951	req->length = length;	710	req->size = length;
952		711
953	send_req (req);	712	REQ_SEND;
954	}	713	}
955		714
956	void	715	void
957	aio_stat (fh_or_path,callback=&PL_sv_undef)	716	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
958	SV * fh_or_path
959	SV * callback
960	ALIAS:	717	ALIAS:
961	aio_stat = REQ_STAT	718	aio_stat = EIO_STAT
962	aio_lstat = REQ_LSTAT	719	aio_lstat = EIO_LSTAT
963	CODE:	720	PPCODE:
964	{	721	{
965	dREQ;	722	dREQ;
966		723
967	New (0, req->statdata, 1, Stat_t);	724	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
968	if (!req->statdata)	725	if (!req->ptr2)
969	{	726	{
970	free_req (req);	727	req_destroy (req);
971	croak ("out of memory during aio_req->statdata allocation");	728	croak ("out of memory during aio_stat statdata allocation");
972	}	729	}
		730
		731	req->flags |= EIO_FLAG_PTR2_FREE;
		732	req->sv1 = newSVsv (fh_or_path);
973		733
974	if (SvPOK (fh_or_path))	734	if (SvPOK (fh_or_path))
975	{	735	{
976	req->type = ix;	736	req->type = ix;
977	req->data = newSVsv (fh_or_path);
978	req->dataptr = SvPVbyte_nolen (req->data);	737	req->ptr1 = SvPVbyte_nolen (req->sv1);
979	}	738	}
980	else	739	else
981	{	740	{
982	req->type = REQ_FSTAT;	741	req->type = EIO_FSTAT;
983	req->fh = newSVsv (fh_or_path);
984	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	742	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		743	}
		744
		745	REQ_SEND;
		746	}
		747
		748	void
		749	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		750	PPCODE:
		751	{
		752	dREQ;
		753
		754	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		755	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		756	req->sv1 = newSVsv (fh_or_path);
		757
		758	if (SvPOK (fh_or_path))
985	}	759	{
		760	req->type = EIO_UTIME;
		761	req->ptr1 = SvPVbyte_nolen (req->sv1);
		762	}
		763	else
		764	{
		765	req->type = EIO_FUTIME;
		766	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		767	}
986		768
987	send_req (req);	769	REQ_SEND;
988	}	770	}
989		771
990	void	772	void
		773	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		774	PPCODE:
		775	{
		776	dREQ;
		777
		778	req->sv1 = newSVsv (fh_or_path);
		779	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		780
		781	if (SvPOK (fh_or_path))
		782	{
		783	req->type = EIO_TRUNCATE;
		784	req->ptr1 = SvPVbyte_nolen (req->sv1);
		785	}
		786	else
		787	{
		788	req->type = EIO_FTRUNCATE;
		789	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		790	}
		791
		792	REQ_SEND;
		793	}
		794
		795	void
		796	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		797	ALIAS:
		798	aio_chmod = EIO_CHMOD
		799	aio_fchmod = EIO_FCHMOD
		800	aio_mkdir = EIO_MKDIR
		801	PPCODE:
		802	{
		803	dREQ;
		804
		805	req->type = ix;
		806	req->int2 = mode;
		807	req->sv1 = newSVsv (fh_or_path);
		808
		809	if (ix == EIO_FCHMOD)
		810	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		811	else
		812	req->ptr1 = SvPVbyte_nolen (req->sv1);
		813
		814	REQ_SEND;
		815	}
		816
		817	void
		818	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		819	PPCODE:
		820	{
		821	dREQ;
		822
		823	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		824	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		825	req->sv1 = newSVsv (fh_or_path);
		826
		827	if (SvPOK (fh_or_path))
		828	{
		829	req->type = EIO_CHOWN;
		830	req->ptr1 = SvPVbyte_nolen (req->sv1);
		831	}
		832	else
		833	{
		834	req->type = EIO_FCHOWN;
		835	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		836	}
		837
		838	REQ_SEND;
		839	}
		840
		841	void
991	aio_unlink (pathname,callback=&PL_sv_undef)	842	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
992	SV * pathname
993	SV * callback
994	ALIAS:	843	ALIAS:
995	aio_unlink = REQ_UNLINK	844	aio_unlink = EIO_UNLINK
996	aio_rmdir = REQ_RMDIR	845	aio_rmdir = EIO_RMDIR
997	aio_readdir = REQ_READDIR	846	aio_readdir = EIO_READDIR
998	CODE:	847	PPCODE:
999	{	848	{
1000	dREQ;	849	dREQ;
1001		850
1002	req->type = ix;	851	req->type = ix;
1003	req->data = newSVsv (pathname);	852	req->sv1 = newSVsv (pathname);
1004	req->dataptr = SvPVbyte_nolen (req->data);	853	req->ptr1 = SvPVbyte_nolen (req->sv1);
1005
1006	send_req (req);
1007	}
1008		854
		855	REQ_SEND;
		856	}
		857
1009	void	858	void
1010	aio_link (oldpath,newpath,callback=&PL_sv_undef)	859	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1011	SV * oldpath
1012	SV * newpath
1013	SV * callback
1014	ALIAS:	860	ALIAS:
1015	aio_link = REQ_LINK	861	aio_link = EIO_LINK
1016	aio_symlink = REQ_SYMLINK	862	aio_symlink = EIO_SYMLINK
1017	aio_rename = REQ_RENAME	863	aio_rename = EIO_RENAME
1018	CODE:	864	PPCODE:
1019	{	865	{
1020	dREQ;	866	dREQ;
1021		867
1022	req->type = ix;	868	req->type = ix;
1023	req->fh = newSVsv (oldpath);	869	req->sv1 = newSVsv (oldpath);
1024	req->data2ptr = SvPVbyte_nolen (req->fh);	870	req->ptr1 = SvPVbyte_nolen (req->sv1);
1025	req->data = newSVsv (newpath);	871	req->sv2 = newSVsv (newpath);
1026	req->dataptr = SvPVbyte_nolen (req->data);	872	req->ptr2 = SvPVbyte_nolen (req->sv2);
1027		873
1028	send_req (req);	874	REQ_SEND;
1029	}	875	}
		876
		877	void
		878	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		879	PPCODE:
		880	{
		881	dREQ;
		882
		883	req->type = EIO_MKNOD;
		884	req->sv1 = newSVsv (pathname);
		885	req->ptr1 = SvPVbyte_nolen (req->sv1);
		886	req->int2 = (mode_t)mode;
		887	req->offs = dev;
		888
		889	REQ_SEND;
		890	}
		891
		892	void
		893	aio_busy (double delay, SV *callback=&PL_sv_undef)
		894	PPCODE:
		895	{
		896	dREQ;
		897
		898	req->type = EIO_BUSY;
		899	req->nv1 = delay < 0. ? 0. : delay;
		900
		901	REQ_SEND;
		902	}
		903
		904	void
		905	aio_group (SV *callback=&PL_sv_undef)
		906	PROTOTYPE: ;$
		907	PPCODE:
		908	{
		909	dREQ;
		910
		911	req->type = EIO_GROUP;
		912
		913	eio_submit (req);
		914	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		915	}
		916
		917	void
		918	aio_nop (SV *callback=&PL_sv_undef)
		919	ALIAS:
		920	aio_nop = EIO_NOP
		921	aio_sync = EIO_SYNC
		922	PPCODE:
		923	{
		924	dREQ;
		925
		926	req->type = ix;
		927
		928	REQ_SEND;
		929	}
		930
		931	int
		932	aioreq_pri (int pri = 0)
		933	PROTOTYPE: ;$
		934	CODE:
		935	RETVAL = next_pri - EIO_PRI_BIAS;
		936	if (items > 0)
		937	{
		938	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		939	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		940	next_pri = pri + EIO_PRI_BIAS;
		941	}
		942	OUTPUT:
		943	RETVAL
		944
		945	void
		946	aioreq_nice (int nice = 0)
		947	CODE:
		948	nice = next_pri - nice;
		949	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		950	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		951	next_pri = nice + EIO_PRI_BIAS;
1030		952
1031	void	953	void
1032	flush ()	954	flush ()
1033	PROTOTYPE:	955	PROTOTYPE:
1034	CODE:	956	CODE:
1035	while (nreqs)	957	while (eio_nreqs ())
1036	{	958	{
1037	poll_wait ();	959	poll_wait ();
1038	poll_cb ();	960	poll_cb ();
1039	}	961	}
1040		962
1041	void	963	int
1042	poll()	964	poll()
1043	PROTOTYPE:	965	PROTOTYPE:
1044	CODE:	966	CODE:
1045	if (nreqs)
1046	{
1047	poll_wait ();	967	poll_wait ();
1048	poll_cb ();	968	RETVAL = poll_cb ();
1049	}	969	OUTPUT:
		970	RETVAL
1050		971
1051	int	972	int
1052	poll_fileno()	973	poll_fileno()
1053	PROTOTYPE:	974	PROTOTYPE:
1054	CODE:	975	CODE:
…		…
1066		987
1067	void	988	void
1068	poll_wait()	989	poll_wait()
1069	PROTOTYPE:	990	PROTOTYPE:
1070	CODE:	991	CODE:
1071	if (nreqs)
1072	poll_wait ();	992	poll_wait ();
1073		993
1074	int	994	int
1075	nreqs()	995	nreqs()
1076	PROTOTYPE:	996	PROTOTYPE:
1077	CODE:	997	CODE:
1078	RETVAL = nreqs;	998	RETVAL = eio_nreqs ();
1079	OUTPUT:	999	OUTPUT:
1080	RETVAL	1000	RETVAL
1081		1001
		1002	int
		1003	nready()
		1004	PROTOTYPE:
		1005	CODE:
		1006	RETVAL = eio_nready ();
		1007	OUTPUT:
		1008	RETVAL
		1009
		1010	int
		1011	npending()
		1012	PROTOTYPE:
		1013	CODE:
		1014	RETVAL = eio_npending ();
		1015	OUTPUT:
		1016	RETVAL
		1017
		1018	int
		1019	nthreads()
		1020	PROTOTYPE:
		1021	CODE:
		1022	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1023	RETVAL = started;
		1024	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1025	OUTPUT:
		1026	RETVAL
		1027
		1028	void _on_next_submit (SV *cb)
		1029	CODE:
		1030	SvREFCNT_dec (on_next_submit);
		1031	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1032
		1033	PROTOTYPES: DISABLE
		1034
		1035	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1036
		1037	void
		1038	cancel (aio_req_ornot req)
		1039	CODE:
		1040	eio_cancel (req);
		1041
		1042	void
		1043	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1044	CODE:
		1045	SvREFCNT_dec (req->callback);
		1046	req->callback = newSVsv (callback);
		1047
		1048	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1049
		1050	void
		1051	add (aio_req grp, ...)
		1052	PPCODE:
		1053	{
		1054	int i;
		1055
		1056	if (grp->int1 == 2)
		1057	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1058
		1059	for (i = 1; i < items; ++i )
		1060	{
		1061	aio_req req;
		1062
		1063	if (GIMME_V != G_VOID)
		1064	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1065
		1066	req = SvAIO_REQ (ST (i));
		1067
		1068	if (req)
		1069	eio_grp_add (grp, req);
		1070	}
		1071	}
		1072
		1073	void
		1074	cancel_subs (aio_req_ornot req)
		1075	CODE:
		1076	req_cancel_subs (req);
		1077
		1078	void
		1079	result (aio_req grp, ...)
		1080	CODE:
		1081	{
		1082	int i;
		1083	AV *av;
		1084
		1085	grp->errorno = errno;
		1086
		1087	av = newAV ();
		1088
		1089	for (i = 1; i < items; ++i )
		1090	av_push (av, newSVsv (ST (i)));
		1091
		1092	SvREFCNT_dec (grp->sv1);
		1093	grp->sv1 = (SV *)av;
		1094	}
		1095
		1096	void
		1097	errno (aio_req grp, int errorno = errno)
		1098	CODE:
		1099	grp->errorno = errorno;
		1100
		1101	void
		1102	limit (aio_req grp, int limit)
		1103	CODE:
		1104	eio_grp_limit (grp, limit);
		1105
		1106	void
		1107	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1108	CODE:
		1109	{
		1110	SvREFCNT_dec (grp->sv2);
		1111	grp->sv2 = newSVsv (callback);
		1112
		1113	if (grp->int2 <= 0)
		1114	grp->int2 = 2;
		1115
		1116	eio_grp_limit (grp, grp->int2);
		1117	}
		1118

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