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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.39 by root, Mon Feb 6 23:54:12 2006 UTC vs.
Revision 1.115 by root, Sat May 10 18:06:41 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	#ifdef _WIN32
22	# if __linux	19
23	# include <sys/sendfile.h>	20	# define EIO_STRUCT_DIRENT Direntry_t
24	# elif __freebsd	21	# undef malloc
25	# include <sys/socket.h>	22	# undef free
26	# include <sys/uio.h>	23
27	# elif __hpux	24	// perl overrides all those nice win32 functions
28	# include <sys/socket.h>	25	# undef open
29	# elif __solaris /* not yet */	26	# undef read
30	# 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
31	# else	56	#else
32	# error sendfile support requested but not available	57
33	# 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
34	#endif	65	#endif
35		66
36	/* used for struct dirent, AIX doesn't provide it */	67	#define EIO_STRUCT_STAT Stat_t
37	#ifndef NAME_MAX	68
38	# 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
39	#endif	74	#endif
40		75
41	#if __ia64	76	static HV *stash;
42	# define STACKSIZE 65536	77	typedef SV SV8; /* byte-sv, used for argument-checking */
43	#else	78
44	# define STACKSIZE 8192	79	#define AIO_REQ_KLASS "IO::AIO::REQ"
45	#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)
46		96
47	enum {	97	enum {
48	REQ_QUIT,	98	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,
55	REQ_READDIR,
56	REQ_SYMLINK,
57	};	99	};
58		100
59	typedef struct aio_cb {	101	#include "libeio/eio.c"
60	struct aio_cb *volatile next;
61		102
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;	103	typedef eio_req *aio_req;
		104	typedef eio_req *aio_req_ornot;
80		105
81	static int started, wanted;	106	static unsigned int max_outstanding = 0x7fffffff;
82	static volatile int nreqs;
83	static int max_outstanding = 1<<30;
84	static int respipe [2];
85		107
86	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	108	static int next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS;
87	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
88	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
89		109
90	static volatile aio_req reqs, reqe; /* queue start, queue end */	110	static int respipe_osf [2], respipe [2] = { -1, -1 };
91	static volatile aio_req ress, rese; /* queue start, queue end */
92		111
		112	static void req_destroy (aio_req req);
93	static void free_req (aio_req req)	113	static void req_cancel (aio_req req);
94	{
95	if (req->data)
96	SvREFCNT_dec (req->data);
97		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	{
98	if (req->fh)	132	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	{	133	{
121	fd_set rfd;	134	req->self = (SV *)newHV ();
122	FD_ZERO(&rfd);	135	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	}	136	}
127	}
128		137
129	static int	138	return sv_2mortal (sv_bless (newRV_inc (req->self), gv_stashpv (klass, 1)));
130	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 int req_invoke (eio_req *req)
131	{	172	{
132	dSP;	173	dSP;
133	int count = 0;
134	int do_croak = 0;
135	aio_req req;
136		174
137	for (;;)	175	if (req->flags & FLAG_SV2_RO_OFF)
		176	SvREADONLY_off (req->sv2);
		177
		178	if (!EIO_CANCELLED (req) && SvOK (req->callback))
138	{	179	{
139	pthread_mutex_lock (&reslock);	180	ENTER;
140	req = ress;	181	SAVETMPS;
		182	PUSHMARK (SP);
		183	EXTEND (SP, 1);
141		184
142	if (req)	185	switch (req->type)
143	{	186	{
144	ress = req->next;	187	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	{	188	{
189	SV *rv = &PL_sv_undef;	189	SV *rv = &PL_sv_undef;
190		190
191	if (req->result >= 0)	191	if (req->result >= 0)
192	{	192	{
		193	int i;
193	char *buf = req->data2ptr;	194	char *buf = req->ptr2;
194	AV *av = newAV ();	195	AV *av = newAV ();
195		196
196	while (req->result)	197	av_extend (av, req->result - 1);
		198
		199	for (i = 0; i < req->result; ++i)
197	{	200	{
198	SV *sv = newSVpv (buf, 0);	201	SV *sv = newSVpv (buf, 0);
199		202
200	av_push (av, sv);	203	av_store (av, i, sv);
201	buf += SvCUR (sv) + 1;	204	buf += SvCUR (sv) + 1;
202	req->result--;
203	}	205	}
204		206
205	rv = sv_2mortal (newRV_noinc ((SV *)av));	207	rv = sv_2mortal (newRV_noinc ((SV *)av));
206	}	208	}
207		209
208	XPUSHs (rv);	210	PUSHs (rv);
209	}	211	}
210	else	212	break;
		213
		214	case EIO_OPEN:
211	{	215	{
212	XPUSHs (sv_2mortal (newSViv (req->result)));	216	/* convert fd to fh */
		217	SV *fh = &PL_sv_undef;
213		218
214	if (req->type == REQ_OPEN)	219	if (req->result >= 0)
215	{	220	{
216	/* convert fd to fh */	221	GV *gv = (GV *)sv_newmortal ();
		222	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		223	char sym [64];
		224	int symlen;
		225
		226	symlen = snprintf (sym, sizeof (sym), "fd#%d", req->result);
		227	gv_init (gv, stash, sym, symlen, 0);
		228
		229	symlen = snprintf (
		230	sym,
		231	sizeof (sym),
		232	"%s&=%d",
		233	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		234	req->result
217	SV *fh;	235	);
218		236
219	PUTBACK;	237	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
220	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	238	fh = (SV *)gv;
221	SPAGAIN;
222
223	fh = SvREFCNT_inc (POPs);
224
225	PUSHMARK (SP);
226	XPUSHs (sv_2mortal (fh));
227	}	239	}
		240
		241	PUSHs (fh);
228	}	242	}
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;	243	break;
644		244
645	pthread_cond_wait (&reqwait, &reqlock);	245	case EIO_GROUP:
646	}	246	req->int1 = 2; /* mark group as finished */
647		247
648	pthread_mutex_unlock (&reqlock);	248	if (req->sv1)
649
650	errno = 0; /* strictly unnecessary */
651
652	type = req->type;
653
654	switch (type)
655	{	249	{
656	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	250	int i;
657	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	251	AV *av = (AV *)req->sv1;
658		252
659	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	253	EXTEND (SP, AvFILL (av) + 1);
660	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;	254	for (i = 0; i <= AvFILL (av); ++i)
661		255	PUSHs (*av_fetch (av, i, 0));
662	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	256	}
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_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
671
672	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
673	case REQ_FSYNC: req->result = fsync (req->fd); break;
674	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
675
676	case REQ_QUIT:
677	break;	257	break;
678		258
		259	case EIO_NOP:
		260	case EIO_BUSY:
		261	break;
		262
		263	case EIO_READLINK:
		264	if (req->result > 0)
		265	{
		266	SvCUR_set (req->sv2, req->result);
		267	*SvEND (req->sv2) = 0;
		268	PUSHs (req->sv2);
		269	}
		270	break;
		271
		272	case EIO_STAT:
		273	case EIO_LSTAT:
		274	case EIO_FSTAT:
		275	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		276	PL_laststatval = req->result;
		277	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		278	PUSHs (sv_2mortal (newSViv (req->result)));
		279	break;
		280
		281	case EIO_READ:
		282	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		283	*SvEND (req->sv2) = 0;
		284	PUSHs (sv_2mortal (newSViv (req->result)));
		285	break;
		286
		287	case EIO_DUP2:
		288	if (req->result > 0)
		289	req->result = 0;
		290	/* FALLTHROUGH */
		291
679	default:	292	default:
680	req->result = ENOSYS;	293	PUSHs (sv_2mortal (newSViv (req->result)));
681	break;	294	break;
682	}	295	}
683		296
684	req->errorno = errno;	297	errno = req->errorno;
685		298
686	pthread_mutex_lock (&reslock);	299	PUTBACK;
		300	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		301	SPAGAIN;
687		302
688	req->next = 0;	303	FREETMPS;
		304	LEAVE;
689		305
690	if (rese)	306	PUTBACK;
691	{
692	rese->next = req;
693	rese = req;
694	}
695	else
696	{
697	rese = ress = req;
698
699	/* write a dummy byte to the pipe so fh becomes ready */
700	write (respipe [1], &respipe, 1);
701	}
702
703	pthread_mutex_unlock (&reslock);
704	}	307	}
705	while (type != REQ_QUIT);
706		308
		309	return !!SvTRUE (ERRSV);
		310	}
		311
		312	static void req_destroy (aio_req req)
		313	{
		314	if (req->self)
		315	{
		316	sv_unmagic (req->self, PERL_MAGIC_ext);
		317	SvREFCNT_dec (req->self);
		318	}
		319
		320	SvREFCNT_dec (req->sv1);
		321	SvREFCNT_dec (req->sv2);
		322	SvREFCNT_dec (req->callback);
		323
		324	Safefree (req);
		325	}
		326
		327	static void req_cancel_subs (aio_req grp)
		328	{
		329	aio_req sub;
		330
		331	if (grp->type != EIO_GROUP)
707	return 0;	332	return;
708	}
709		333
710	/*****************************************************************************/	334	SvREFCNT_dec (grp->sv2);
		335	grp->sv2 = 0;
711		336
712	static void atfork_prepare (void)	337	eio_grp_cancel (grp);
713	{	338	}
714	pthread_mutex_lock (&reqlock);	339
715	pthread_mutex_lock (&reslock);	340	#ifdef USE_SOCKETS_AS_HANDLES
716	#if !HAVE_PREADWRITE	341	# define TO_SOCKET(x) (win32_get_osfhandle (x))
717	pthread_mutex_lock (&preadwritelock);	342	#else
		343	# define TO_SOCKET(x) (x)
718	#endif	344	#endif
719	#if !HAVE_READDIR_R	345
720	pthread_mutex_lock (&readdirlock);	346	static void
		347	create_respipe (void)
		348	{
		349	int old_readfd = respipe [0];
		350
		351	if (respipe [1] >= 0)
		352	respipe_close (TO_SOCKET (respipe [1]));
		353
		354	#ifdef _WIN32
		355	if (PerlSock_socketpair (AF_UNIX, SOCK_STREAM, 0, respipe))
		356	#else
		357	if (pipe (respipe))
721	#endif	358	#endif
722	}	359	croak ("unable to initialize result pipe");
723		360
724	static void atfork_parent (void)	361	if (old_readfd >= 0)
725	{	362	{
726	#if !HAVE_READDIR_R	363	if (dup2 (TO_SOCKET (respipe [0]), TO_SOCKET (old_readfd)) < 0)
727	pthread_mutex_unlock (&readdirlock);	364	croak ("unable to initialize result pipe(2)");
		365
		366	respipe_close (respipe [0]);
		367	respipe [0] = old_readfd;
		368	}
		369
		370	#ifdef _WIN32
		371	int arg = 1;
		372	if (ioctlsocket (TO_SOCKET (respipe [0]), FIONBIO, &arg)
		373	|| ioctlsocket (TO_SOCKET (respipe [1]), FIONBIO, &arg))
		374	#else
		375	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK)
		376	|| fcntl (respipe [1], F_SETFL, O_NONBLOCK))
728	#endif	377	#endif
729	#if !HAVE_PREADWRITE	378	croak ("unable to initialize result pipe(3)");
730	pthread_mutex_unlock (&preadwritelock);
731	#endif
732	pthread_mutex_unlock (&reslock);
733	pthread_mutex_unlock (&reqlock);
734	}
735		379
736	static void atfork_child (void)	380	respipe_osf [0] = TO_SOCKET (respipe [0]);
737	{	381	respipe_osf [1] = TO_SOCKET (respipe [1]);
738	aio_req prv;	382	}
739		383
740	started = 0;	384	static void poll_wait (void)
		385	{
		386	fd_set rfd;
741		387
742	while (reqs)	388	while (eio_nreqs ())
743	{	389	{
744	prv = reqs;	390	int size;
745	reqs = prv->next;	391
746	free_req (prv);	392	X_LOCK (reslock);
		393	size = res_queue.size;
		394	X_UNLOCK (reslock);
		395
		396	if (size)
		397	return;
		398
		399	maybe_start_thread ();
		400
		401	FD_ZERO (&rfd);
		402	FD_SET (respipe [0], &rfd);
		403
		404	PerlSock_select (respipe [0] + 1, &rfd, 0, 0, 0);
747	}	405	}
		406	}
748		407
749	reqs = reqe = 0;	408	static int poll_cb (void)
750		409	{
751	while (ress)	410	int res = eio_poll ();
752	{
753	prv = ress;
754	ress = prv->next;
755	free_req (prv);
756	}
757
758	ress = rese = 0;
759		411
760	close (respipe [0]);	412	if (res > 0)
761	close (respipe [1]);	413	croak (0);
762	create_pipe ();
763		414
764	atfork_parent ();	415	return res;
765	}	416	}
766		417
767	#define dREQ \	418	#define dREQ \
768	aio_req req; \	419	aio_req req; \
		420	int req_pri = next_pri; \
		421	next_pri = EIO_DEFAULT_PRI + EIO_PRI_BIAS; \
769	\	422	\
770	if (SvOK (callback) && !SvROK (callback)) \	423	if (SvOK (callback) && !SvROK (callback)) \
771	croak ("clalback must be undef or of reference type"); \	424	croak ("callback must be undef or of reference type"); \
772	\	425	\
773	Newz (0, req, 1, aio_cb); \	426	Newz (0, req, 1, eio_req); \
774	if (!req) \	427	if (!req) \
775	croak ("out of memory during aio_req allocation"); \	428	croak ("out of memory during eio_req allocation"); \
776	\	429	\
777	req->callback = newSVsv (callback);	430	req->callback = newSVsv (callback); \
		431	req->pri = req_pri
		432
		433	#define REQ_SEND \
		434	eio_submit (req); \
		435	\
		436	if (GIMME_V != G_VOID) \
		437	XPUSHs (req_sv (req, AIO_REQ_KLASS));
778		438
779	MODULE = IO::AIO PACKAGE = IO::AIO	439	MODULE = IO::AIO PACKAGE = IO::AIO
780		440
781	PROTOTYPES: ENABLE	441	PROTOTYPES: ENABLE
782		442
783	BOOT:	443	BOOT:
784	{	444	{
785	create_pipe ();	445	stash = gv_stashpv ("IO::AIO", 1);
786	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);
787	}
788		446
		447	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
		448	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
		449	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		450	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		451	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		452	#ifdef _WIN32
		453	X_MUTEX_CHECK (wrklock);
		454	X_MUTEX_CHECK (reslock);
		455	X_MUTEX_CHECK (reqlock);
		456	X_MUTEX_CHECK (reqwait);
		457	X_MUTEX_CHECK (preadwritelock);
		458	X_MUTEX_CHECK (readdirlock);
		459
		460	X_COND_CHECK (reqwait);
		461	#else
		462	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		463	#endif
		464
		465	create_respipe ();
		466
		467	if (eio_init (want_poll, done_poll) < 0)
		468	croak ("IO::AIO: unable to initialise eio library");
		469	}
		470
789	void	471	void
790	min_parallel(nthreads)	472	max_poll_reqs (int nreqs)
791	int nthreads
792	PROTOTYPE: $	473	PROTOTYPE: $
		474	CODE:
		475	eio_set_max_poll_reqs (nreqs);
793		476
794	void	477	void
795	max_parallel(nthreads)	478	max_poll_time (double nseconds)
796	int nthreads
797	PROTOTYPE: $	479	PROTOTYPE: $
798
799	int
800	max_outstanding(nreqs)
801	int nreqs
802	PROTOTYPE: $
803	CODE:	480	CODE:
804	RETVAL = max_outstanding;	481	eio_set_max_poll_time (nseconds);
		482
		483	void
		484	min_parallel (int nthreads)
		485	PROTOTYPE: $
		486	CODE:
		487	eio_set_min_parallel (nthreads);
		488
		489	void
		490	max_parallel (int nthreads)
		491	PROTOTYPE: $
		492	CODE:
		493	eio_set_max_parallel (nthreads);
		494
		495	void
		496	max_idle (int nthreads)
		497	PROTOTYPE: $
		498	CODE:
		499	eio_set_max_idle (nthreads);
		500
		501	void
		502	max_outstanding (int maxreqs)
		503	PROTOTYPE: $
		504	CODE:
805	max_outstanding = nreqs;	505	max_outstanding = maxreqs;
806		506
807	void	507	void
808	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	508	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
809	SV * pathname
810	int flags
811	int mode
812	SV * callback
813	PROTOTYPE: $$$;$	509	PROTOTYPE: $$$;$
814	CODE:	510	PPCODE:
815	{	511	{
816	dREQ;	512	dREQ;
817		513
818	req->type = REQ_OPEN;	514	req->type = EIO_OPEN;
819	req->data = newSVsv (pathname);	515	req->sv1 = newSVsv (pathname);
820	req->dataptr = SvPVbyte_nolen (req->data);	516	req->ptr1 = SvPVbyte_nolen (req->sv1);
821	req->fd = flags;	517	req->int1 = flags;
822	req->mode = mode;	518	req->int2 = mode;
823		519
824	send_req (req);	520	REQ_SEND;
825	}	521	}
826		522
827	void	523	void
828	aio_close(fh,callback=&PL_sv_undef)	524	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
829	SV * fh
830	SV * callback
831	PROTOTYPE: $;$	525	PROTOTYPE: $;$
832	ALIAS:	526	ALIAS:
833	aio_close = REQ_CLOSE
834	aio_fsync = REQ_FSYNC	527	aio_fsync = EIO_FSYNC
835	aio_fdatasync = REQ_FDATASYNC	528	aio_fdatasync = EIO_FDATASYNC
836	CODE:	529	PPCODE:
837	{	530	{
838	dREQ;	531	dREQ;
839		532
840	req->type = ix;	533	req->type = ix;
841	req->fh = newSVsv (fh);	534	req->sv1 = newSVsv (fh);
842	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	535	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
843		536
844	send_req (req);	537	REQ_SEND (req);
845	}	538	}
846		539
847	void	540	void
		541	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		542	PROTOTYPE: $;$
		543	PPCODE:
		544	{
		545	static int close_pipe = -1; /* dummy fd to close fds via dup2 */
		546	dREQ;
		547
		548	if (close_pipe < 0)
		549	{
		550	int pipefd [2];
		551
		552	if (pipe (pipefd) < 0
		553	|| close (pipefd [1]) < 0
		554	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0)
		555	abort (); /*D*/
		556
		557	close_pipe = pipefd [0];
		558	}
		559
		560	req->type = EIO_DUP2;
		561	req->int1 = close_pipe;
		562	req->sv2 = newSVsv (fh);
		563	req->int2 = PerlIO_fileno (IoIFP (sv_2io (fh)));
		564
		565	REQ_SEND (req);
		566	}
		567
		568	void
848	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	569	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
849	SV * fh
850	UV offset
851	UV length
852	SV * data
853	UV dataoffset
854	SV * callback
855	ALIAS:	570	ALIAS:
856	aio_read = REQ_READ	571	aio_read = EIO_READ
857	aio_write = REQ_WRITE	572	aio_write = EIO_WRITE
858	PROTOTYPE: $$$$$;$	573	PROTOTYPE: $$$$$;$
859	CODE:	574	PPCODE:
860	{	575	{
861	aio_req req;
862	STRLEN svlen;	576	STRLEN svlen;
863	char *svptr = SvPVbyte (data, svlen);	577	char *svptr = SvPVbyte (data, svlen);
		578	UV len = SvUV (length);
864		579
865	SvUPGRADE (data, SVt_PV);	580	SvUPGRADE (data, SVt_PV);
866	SvPOK_on (data);	581	SvPOK_on (data);
867		582
868	if (dataoffset < 0)	583	if (dataoffset < 0)
869	dataoffset += svlen;	584	dataoffset += svlen;
870		585
871	if (dataoffset < 0 || dataoffset > svlen)	586	if (dataoffset < 0 || dataoffset > svlen)
872	croak ("data offset outside of string");	587	croak ("dataoffset outside of data scalar");
873		588
874	if (ix == REQ_WRITE)	589	if (ix == EIO_WRITE)
875	{	590	{
876	/* write: check length and adjust. */	591	/* write: check length and adjust. */
877	if (length < 0 || length + dataoffset > svlen)	592	if (!SvOK (length) || len + dataoffset > svlen)
878	length = svlen - dataoffset;	593	len = svlen - dataoffset;
879	}	594	}
880	else	595	else
881	{	596	{
882	/* read: grow scalar as necessary */	597	/* read: grow scalar as necessary */
883	svptr = SvGROW (data, length + dataoffset);	598	svptr = SvGROW (data, len + dataoffset + 1);
884	}	599	}
885		600
886	if (length < 0)	601	if (len < 0)
887	croak ("length must not be negative");	602	croak ("length must not be negative");
888		603
889	{	604	{
890	dREQ;	605	dREQ;
891		606
892	req->type = ix;	607	req->type = ix;
893	req->fh = newSVsv (fh);	608	req->sv1 = newSVsv (fh);
894	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	609	req->int1 = PerlIO_fileno (ix == EIO_READ ? IoIFP (sv_2io (fh))
895	: IoOFP (sv_2io (fh)));	610	: IoOFP (sv_2io (fh)));
		611	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
896	req->offset = offset;	612	req->size = len;
897	req->length = length;
898	req->data = SvREFCNT_inc (data);	613	req->sv2 = SvREFCNT_inc (data);
899	req->dataptr = (char *)svptr + dataoffset;	614	req->ptr2 = (char *)svptr + dataoffset;
		615	req->stroffset = dataoffset;
900		616
901	if (!SvREADONLY (data))	617	if (!SvREADONLY (data))
902	{	618	{
903	SvREADONLY_on (data);	619	SvREADONLY_on (data);
904	req->data2ptr = (void *)data;	620	req->flags |= FLAG_SV2_RO_OFF;
905	}	621	}
906		622
907	send_req (req);	623	REQ_SEND;
908	}	624	}
909	}	625	}
910		626
911	void	627	void
		628	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		629	PROTOTYPE: $$;$
		630	PPCODE:
		631	{
		632	SV *data;
		633	dREQ;
		634
		635	data = newSV (NAME_MAX);
		636	SvPOK_on (data);
		637
		638	req->type = EIO_READLINK;
		639	req->sv1 = newSVsv (path);
		640	req->ptr1 = SvPVbyte_nolen (req->sv1);
		641	req->sv2 = data;
		642	req->ptr2 = SvPVbyte_nolen (data);
		643
		644	REQ_SEND;
		645	}
		646
		647	void
912	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	648	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
913	SV * out_fh
914	SV * in_fh
915	UV in_offset
916	UV length
917	SV * callback
918	PROTOTYPE: $$$$;$	649	PROTOTYPE: $$$$;$
919	CODE:	650	PPCODE:
920	{	651	{
921	dREQ;	652	dREQ;
922		653
923	req->type = REQ_SENDFILE;	654	req->type = EIO_SENDFILE;
924	req->fh = newSVsv (out_fh);	655	req->sv1 = newSVsv (out_fh);
925	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	656	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
926	req->fh2 = newSVsv (in_fh);	657	req->sv2 = newSVsv (in_fh);
927	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	658	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
928	req->offset = in_offset;	659	req->offs = SvVAL64 (in_offset);
929	req->length = length;	660	req->size = length;
930		661
931	send_req (req);	662	REQ_SEND;
932	}	663	}
933		664
934	void	665	void
935	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	666	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
936	SV * fh
937	UV offset
938	IV length
939	SV * callback
940	PROTOTYPE: $$$;$	667	PROTOTYPE: $$$;$
941	CODE:	668	PPCODE:
942	{	669	{
943	dREQ;	670	dREQ;
944		671
945	req->type = REQ_READAHEAD;	672	req->type = EIO_READAHEAD;
946	req->fh = newSVsv (fh);	673	req->sv1 = newSVsv (fh);
947	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	674	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
948	req->offset = offset;	675	req->offs = SvVAL64 (offset);
949	req->length = length;	676	req->size = length;
950		677
951	send_req (req);	678	REQ_SEND;
952	}	679	}
953		680
954	void	681	void
955	aio_stat(fh_or_path,callback=&PL_sv_undef)	682	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
956	SV * fh_or_path
957	SV * callback
958	ALIAS:	683	ALIAS:
959	aio_stat = REQ_STAT	684	aio_stat = EIO_STAT
960	aio_lstat = REQ_LSTAT	685	aio_lstat = EIO_LSTAT
961	CODE:	686	PPCODE:
962	{	687	{
963	dREQ;	688	dREQ;
964		689
965	New (0, req->statdata, 1, Stat_t);	690	req->ptr2 = malloc (sizeof (EIO_STRUCT_STAT));
966	if (!req->statdata)	691	if (!req->ptr2)
967	{	692	{
968	free_req (req);	693	req_destroy (req);
969	croak ("out of memory during aio_req->statdata allocation");	694	croak ("out of memory during aio_stat statdata allocation");
970	}	695	}
		696
		697	req->flags |= EIO_FLAG_PTR2_FREE;
		698	req->sv1 = newSVsv (fh_or_path);
971		699
972	if (SvPOK (fh_or_path))	700	if (SvPOK (fh_or_path))
973	{	701	{
974	req->type = ix;	702	req->type = ix;
975	req->data = newSVsv (fh_or_path);
976	req->dataptr = SvPVbyte_nolen (req->data);	703	req->ptr1 = SvPVbyte_nolen (req->sv1);
977	}	704	}
978	else	705	else
979	{	706	{
980	req->type = REQ_FSTAT;	707	req->type = EIO_FSTAT;
981	req->fh = newSVsv (fh_or_path);
982	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	708	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		709	}
		710
		711	REQ_SEND;
		712	}
		713
		714	void
		715	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		716	PPCODE:
		717	{
		718	dREQ;
		719
		720	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		721	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		722	req->sv1 = newSVsv (fh_or_path);
		723
		724	if (SvPOK (fh_or_path))
983	}	725	{
		726	req->type = EIO_UTIME;
		727	req->ptr1 = SvPVbyte_nolen (req->sv1);
		728	}
		729	else
		730	{
		731	req->type = EIO_FUTIME;
		732	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		733	}
984		734
985	send_req (req);	735	REQ_SEND;
986	}	736	}
987		737
988	void	738	void
		739	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		740	PPCODE:
		741	{
		742	dREQ;
		743
		744	req->sv1 = newSVsv (fh_or_path);
		745	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		746
		747	if (SvPOK (fh_or_path))
		748	{
		749	req->type = EIO_TRUNCATE;
		750	req->ptr1 = SvPVbyte_nolen (req->sv1);
		751	}
		752	else
		753	{
		754	req->type = EIO_FTRUNCATE;
		755	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		756	}
		757
		758	REQ_SEND;
		759	}
		760
		761	void
		762	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		763	ALIAS:
		764	aio_chmod = EIO_CHMOD
		765	aio_fchmod = EIO_FCHMOD
		766	aio_mkdir = EIO_MKDIR
		767	PPCODE:
		768	{
		769	dREQ;
		770
		771	req->type = ix;
		772	req->int2 = mode;
		773	req->sv1 = newSVsv (fh_or_path);
		774
		775	if (ix == EIO_FCHMOD)
		776	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		777	else
		778	req->ptr1 = SvPVbyte_nolen (req->sv1);
		779
		780	REQ_SEND;
		781	}
		782
		783	void
		784	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		785	PPCODE:
		786	{
		787	dREQ;
		788
		789	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		790	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		791	req->sv1 = newSVsv (fh_or_path);
		792
		793	if (SvPOK (fh_or_path))
		794	{
		795	req->type = EIO_CHOWN;
		796	req->ptr1 = SvPVbyte_nolen (req->sv1);
		797	}
		798	else
		799	{
		800	req->type = EIO_FCHOWN;
		801	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		802	}
		803
		804	REQ_SEND;
		805	}
		806
		807	void
989	aio_unlink(pathname,callback=&PL_sv_undef)	808	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
990	SV * pathname
991	SV * callback
992	ALIAS:	809	ALIAS:
993	aio_unlink = REQ_UNLINK	810	aio_unlink = EIO_UNLINK
994	aio_rmdir = REQ_RMDIR	811	aio_rmdir = EIO_RMDIR
		812	aio_readdir = EIO_READDIR
995	CODE:	813	PPCODE:
996	{	814	{
997	dREQ;	815	dREQ;
998		816
999	req->type = ix;	817	req->type = ix;
1000	req->data = newSVsv (pathname);	818	req->sv1 = newSVsv (pathname);
1001	req->dataptr = SvPVbyte_nolen (req->data);	819	req->ptr1 = SvPVbyte_nolen (req->sv1);
		820
		821	REQ_SEND;
		822	}
		823
		824	void
		825	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
		826	ALIAS:
		827	aio_link = EIO_LINK
		828	aio_symlink = EIO_SYMLINK
		829	aio_rename = EIO_RENAME
		830	PPCODE:
		831	{
		832	dREQ;
1002		833
1003	send_req (req);	834	req->type = ix;
1004	}	835	req->sv1 = newSVsv (oldpath);
1005		836	req->ptr1 = SvPVbyte_nolen (req->sv1);
1006	void	837	req->sv2 = newSVsv (newpath);
1007	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	838	req->ptr2 = SvPVbyte_nolen (req->sv2);
1008	SV * oldpath
1009	SV * newpath
1010	SV * callback
1011	CODE:
1012	{
1013	dREQ;
1014		839
1015	req->type = REQ_SYMLINK;	840	REQ_SEND;
1016	req->fh = newSVsv (oldpath);	841	}
1017	req->data2ptr = SvPVbyte_nolen (req->fh);	842
1018	req->data = newSVsv (newpath);	843	void
1019	req->dataptr = SvPVbyte_nolen (req->data);	844	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
		845	PPCODE:
		846	{
		847	dREQ;
1020		848
1021	send_req (req);	849	req->type = EIO_MKNOD;
1022	}	850	req->sv1 = newSVsv (pathname);
1023		851	req->ptr1 = SvPVbyte_nolen (req->sv1);
1024	void	852	req->int2 = (mode_t)mode;
1025	aio_readdir(pathname,callback=&PL_sv_undef)	853	req->offs = dev;
1026	SV * pathname
1027	SV * callback
1028	CODE:
1029	{
1030	dREQ;
1031		854
		855	REQ_SEND;
		856	}
		857
		858	void
		859	aio_busy (double delay, SV *callback=&PL_sv_undef)
		860	PPCODE:
		861	{
		862	dREQ;
		863
		864	req->type = EIO_BUSY;
		865	req->nv1 = delay < 0. ? 0. : delay;
		866
		867	REQ_SEND;
		868	}
		869
		870	void
		871	aio_group (SV *callback=&PL_sv_undef)
		872	PROTOTYPE: ;$
		873	PPCODE:
		874	{
		875	dREQ;
		876
		877	req->type = EIO_GROUP;
		878
		879	eio_submit (req);
		880	XPUSHs (req_sv (req, AIO_GRP_KLASS));
		881	}
		882
		883	void
		884	aio_nop (SV *callback=&PL_sv_undef)
		885	ALIAS:
		886	aio_nop = EIO_NOP
		887	aio_sync = EIO_SYNC
		888	PPCODE:
		889	{
		890	dREQ;
		891
1032	req->type = REQ_READDIR;	892	req->type = ix;
1033	req->data = newSVsv (pathname);
1034	req->dataptr = SvPVbyte_nolen (req->data);
1035
1036	send_req (req);
1037	}
1038		893
		894	REQ_SEND;
		895	}
		896
		897	int
		898	aioreq_pri (int pri = 0)
		899	PROTOTYPE: ;$
		900	CODE:
		901	RETVAL = next_pri - EIO_PRI_BIAS;
		902	if (items > 0)
		903	{
		904	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		905	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		906	next_pri = pri + EIO_PRI_BIAS;
		907	}
		908	OUTPUT:
		909	RETVAL
		910
1039	void	911	void
		912	aioreq_nice (int nice = 0)
		913	CODE:
		914	nice = next_pri - nice;
		915	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		916	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		917	next_pri = nice + EIO_PRI_BIAS;
		918
		919	void
1040	flush()	920	flush ()
1041	PROTOTYPE:	921	PROTOTYPE:
1042	CODE:	922	CODE:
1043	while (nreqs)	923	while (nreqs)
1044	{	924	{
1045	poll_wait ();	925	poll_wait ();
1046	poll_cb ();	926	poll_cb ();
1047	}	927	}
1048		928
1049	void	929	int
1050	poll()	930	poll()
1051	PROTOTYPE:	931	PROTOTYPE:
1052	CODE:	932	CODE:
1053	if (nreqs)
1054	{
1055	poll_wait ();	933	poll_wait ();
1056	poll_cb ();	934	RETVAL = poll_cb ();
1057	}	935	OUTPUT:
		936	RETVAL
1058		937
1059	int	938	int
1060	poll_fileno()	939	poll_fileno()
1061	PROTOTYPE:	940	PROTOTYPE:
1062	CODE:	941	CODE:
…		…
1074		953
1075	void	954	void
1076	poll_wait()	955	poll_wait()
1077	PROTOTYPE:	956	PROTOTYPE:
1078	CODE:	957	CODE:
1079	if (nreqs)
1080	poll_wait ();	958	poll_wait ();
1081		959
1082	int	960	int
1083	nreqs()	961	nreqs()
1084	PROTOTYPE:	962	PROTOTYPE:
1085	CODE:	963	CODE:
1086	RETVAL = nreqs;	964	RETVAL = eio_nreqs ();
1087	OUTPUT:	965	OUTPUT:
1088	RETVAL	966	RETVAL
1089		967
		968	int
		969	nready()
		970	PROTOTYPE:
		971	CODE:
		972	RETVAL = eio_nready ();
		973	OUTPUT:
		974	RETVAL
		975
		976	int
		977	npending()
		978	PROTOTYPE:
		979	CODE:
		980	RETVAL = eio_npending ();
		981	OUTPUT:
		982	RETVAL
		983
		984	int
		985	nthreads()
		986	PROTOTYPE:
		987	CODE:
		988	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		989	RETVAL = started;
		990	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		991	OUTPUT:
		992	RETVAL
		993
		994	PROTOTYPES: DISABLE
		995
		996	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		997
		998	void
		999	cancel (aio_req_ornot req)
		1000	CODE:
		1001	eio_cancel (req);
		1002
		1003	void
		1004	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1005	CODE:
		1006	SvREFCNT_dec (req->callback);
		1007	req->callback = newSVsv (callback);
		1008
		1009	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1010
		1011	void
		1012	add (aio_req grp, ...)
		1013	PPCODE:
		1014	{
		1015	int i;
		1016
		1017	if (grp->int1 == 2)
		1018	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1019
		1020	for (i = 1; i < items; ++i )
		1021	{
		1022	aio_req req;
		1023
		1024	if (GIMME_V != G_VOID)
		1025	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1026
		1027	req = SvAIO_REQ (ST (i));
		1028
		1029	if (req)
		1030	eio_grp_add (grp, req);
		1031	}
		1032	}
		1033
		1034	void
		1035	cancel_subs (aio_req_ornot req)
		1036	CODE:
		1037	req_cancel_subs (req);
		1038
		1039	void
		1040	result (aio_req grp, ...)
		1041	CODE:
		1042	{
		1043	int i;
		1044	AV *av;
		1045
		1046	grp->errorno = errno;
		1047
		1048	av = newAV ();
		1049
		1050	for (i = 1; i < items; ++i )
		1051	av_push (av, newSVsv (ST (i)));
		1052
		1053	SvREFCNT_dec (grp->sv1);
		1054	grp->sv1 = (SV *)av;
		1055	}
		1056
		1057	void
		1058	errno (aio_req grp, int errorno = errno)
		1059	CODE:
		1060	grp->errorno = errorno;
		1061
		1062	void
		1063	limit (aio_req grp, int limit)
		1064	CODE:
		1065	eio_grp_limit (grp, limit);
		1066
		1067	void
		1068	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1069	CODE:
		1070	{
		1071	SvREFCNT_dec (grp->sv2);
		1072	grp->sv2 = newSVsv (callback);
		1073
		1074	if (grp->int2 <= 0)
		1075	grp->int2 = 2;
		1076
		1077	eio_grp_limit (grp, grp->int2);
		1078	}
		1079

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