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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.42 by root, Fri Jul 21 07:35:31 2006 UTC vs.
Revision 1.248 by root, Fri Jun 23 22:33:06 2017 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	#include "schmorp.h"
9
10	#include <pthread.h>
11		10
12	#include <stddef.h>	11	#include <stddef.h>
		12	#include <stdlib.h>
13	#include <errno.h>	13	#include <errno.h>
14	#include <sys/types.h>	14	#include <sys/types.h>
15	#include <sys/stat.h>	15	#include <sys/stat.h>
16	#include <limits.h>	16	#include <limits.h>
17	#include <unistd.h>
18	#include <fcntl.h>	17	#include <fcntl.h>
19	#include <signal.h>
20	#include <sched.h>	18	#include <sched.h>
21		19
22	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
23	# if __linux
24	# include <sys/sendfile.h>
25	# elif __freebsd
26	# include <sys/socket.h>
27	# include <sys/uio.h>	21	# include <sys/mman.h>
28	# elif __hpux	22	#endif
		23
		24	/* the incompetent fool that created musl keeps __linux__, refuses
		25	* to implement any linux standard apis, and also has no way to test
		26	* for his broken iplementation. don't complain to me if this fails
		27	* for you.
		28	*/
		29	#if __linux__ && (defined __GLIBC__ || defined __UCLIBC__)
		30	# include <linux/fs.h>
		31	# ifdef FS_IOC_FIEMAP
		32	# include <linux/types.h>
		33	# include <linux/fiemap.h>
		34	# define HAVE_FIEMAP 1
		35	# endif
		36	#endif
		37
		38	/* perl namespace pollution */
		39	#undef VERSION
		40
		41	/* perl stupidly overrides readdir and maybe others */
		42	/* with thread-unsafe versions, imagine that :( */
		43	#undef readdir
		44	#undef opendir
		45	#undef closedir
		46
		47	#ifdef _WIN32
		48
		49	// perl overrides all those nice libc functions
		50
		51	#undef malloc
		52	#undef free
		53	#undef open
		54	#undef read
		55	#undef write
		56	#undef send
		57	#undef recv
		58	#undef stat
		59	#undef lstat
		60	#undef fstat
		61	#undef truncate
		62	#undef ftruncate
		63	#undef open
		64	#undef link
		65	#undef close
		66	#undef unlink
		67	#undef mkdir
		68	#undef rmdir
		69	#undef rename
		70	#undef lseek
		71	#undef opendir
		72	#undef readdir
		73	#undef closedir
		74	#undef chmod
		75	#undef fchmod
		76	#undef dup
		77	#undef dup2
		78	#undef abort
		79	#undef pipe
		80
		81	#define EIO_STRUCT_STAT struct _stati64
		82	#define EIO_STRUCT_STATI64
		83
		84	#else
		85
29	# include <sys/socket.h>	86	#include <sys/time.h>
30	# elif __solaris /* not yet */
31	# include <sys/sendfile.h>	87	#include <sys/select.h>
		88	#include <unistd.h>
		89	#include <utime.h>
		90	#include <signal.h>
		91
		92	#define EIO_STRUCT_STAT Stat_t
		93
		94	#endif
		95
		96	/*****************************************************************************/
		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	#else
		101	# define expect(expr,value) (expr)
		102	#endif
		103
		104	#define expect_false(expr) expect ((expr) != 0, 0)
		105	#define expect_true(expr) expect ((expr) != 0, 1)
		106
		107	/*****************************************************************************/
		108
		109	typedef SV SV8; /* byte-sv, used for argument-checking */
		110	typedef int aio_rfd; /* read file desriptor */
		111	typedef int aio_wfd; /* write file descriptor */
		112
		113	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		114
		115	#define EIO_REQ_MEMBERS \
		116	SV *callback; \
		117	SV *sv1, *sv2; \
		118	SV *sv3, *sv4; \
		119	STRLEN stroffset; \
		120	SV *self;
		121
		122	#define EIO_NO_WRAPPERS 1
		123
		124	#include "libeio/config.h"
		125	#include "libeio/eio.h"
		126
		127	static int req_invoke (eio_req *req);
		128	#define EIO_FINISH(req) req_invoke (req)
		129	static void req_destroy (eio_req *grp);
		130	#define EIO_DESTROY(req) req_destroy (req)
		131
		132	#include "libeio/eio.c"
		133
		134	#if !HAVE_POSIX_FADVISE
		135	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		136	#endif
		137
		138	#if !HAVE_POSIX_MADVISE
		139	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		140	#endif
		141
		142	#ifndef MAP_ANONYMOUS
		143	# ifdef MAP_ANON
		144	# define MAP_ANONYMOUS MAP_ANON
32	# else	145	# else
33	# error sendfile support requested but not available	146	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
34	# endif	147	# endif
35	#endif	148	#endif
36		149
37	/* used for struct dirent, AIX doesn't provide it */	150	/* defines all sorts of constants to 0 unless they are already defined */
38	#ifndef NAME_MAX	151	/* also provides const_iv_ and const_niv_ macros for them */
39	# define NAME_MAX 4096	152	#include "def0.h"
40	#endif
41		153
42	#if __ia64	154	#ifndef makedev
43	# define STACKSIZE 65536	155	# define makedev(maj,min) (((maj) << 8) | (min))
44	#else
45	# define STACKSIZE 8192
46	#endif	156	#endif
		157	#ifndef major
		158	# define major(dev) ((dev) >> 8)
		159	#endif
		160	#ifndef minor
		161	# define minor(dev) ((dev) & 0xff)
		162	#endif
47		163
48	enum {	164	#if PAGESIZE <= 0
49	REQ_QUIT,	165	# define PAGESIZE sysconf (_SC_PAGESIZE)
50	REQ_OPEN, REQ_CLOSE,	166	#endif
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	};
59		167
60	typedef struct aio_cb {	168	/*****************************************************************************/
61	struct aio_cb *volatile next;
62
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;
81
82	static int started, wanted;
83	static volatile int nreqs;
84	static int max_outstanding = 1<<30;
85	static int respipe [2];
86
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90
91	static volatile aio_req reqs, reqe; /* queue start, queue end */
92	static volatile aio_req ress, rese; /* queue start, queue end */
93
94	static void free_req (aio_req req)
95	{
96	if (req->data)
97	SvREFCNT_dec (req->data);
98
99	if (req->fh)
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		169
117	static void	170	static void
118	poll_wait ()	171	fiemap (eio_req *req)
119	{	172	{
120	if (nreqs && !ress)	173	req->result = -1;
121	{
122	fd_set rfd;
123	FD_ZERO(&rfd);
124	FD_SET(respipe [0], &rfd);
125		174
126	select (respipe [0] + 1, &rfd, 0, 0, 0);	175	#if HAVE_FIEMAP
127	}	176	/* assume some c99 */
128	}	177	struct fiemap *fiemap = 0;
		178	size_t end_offset;
		179	int count = req->int3;
129		180
130	static int	181	req->flags |= EIO_FLAG_PTR1_FREE;
131	poll_cb ()	182
132	{	183	/* heuristic: start with 512 bytes (8 extents), and if that isn't enough, */
133	dSP;	184	/* increase in 3.5kb steps */
		185	if (count < 0)
134	int count = 0;	186	count = 8;
135	int do_croak = 0;	187
136	aio_req req;	188	fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		189	errno = ENOMEM;
		190	if (!fiemap)
		191	return;
		192
		193	req->ptr1 = fiemap;
		194
		195	fiemap->fm_start = req->offs;
		196	fiemap->fm_length = req->size;
		197	fiemap->fm_flags = req->int2;
		198	fiemap->fm_extent_count = count;
		199
		200	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap) < 0)
		201	return;
		202
		203	if (req->int3 >= 0 /* not autosizing */
		204	|| !fiemap->fm_mapped_extents /* no more extents */
		205	|| fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST /* hit eof */)
		206	goto done;
		207
		208	/* else we have to loop -
		209	* it would be tempting (actually I tried that first) to just query the
		210	* number of extents needed, but linux often feels like not returning all
		211	* extents, without telling us it left any out. this complicates
		212	* this quite a bit.
		213	*/
		214
		215	end_offset = fiemap->fm_length + (fiemap->fm_length == FIEMAP_MAX_OFFSET ? 0 : fiemap->fm_start);
137		216
138	for (;;)	217	for (;;)
139	{	218	{
140	pthread_mutex_lock (&reslock);	219	/* we go in 54 extent steps - 3kb, in the hope that this fits nicely on the eio stack (normally 16+ kb) */
141	req = ress;	220	char scratch[3072];
		221	struct fiemap *incmap = (struct fiemap *)scratch;
142		222
		223	incmap->fm_start = fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_logical
		224	+ fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_length;
		225	incmap->fm_length = fiemap->fm_length - (incmap->fm_start - fiemap->fm_start);
		226	incmap->fm_flags = fiemap->fm_flags;
		227	incmap->fm_extent_count = (sizeof (scratch) - sizeof (struct fiemap)) / sizeof (struct fiemap_extent);
		228
		229	if (ioctl (req->int1, FS_IOC_FIEMAP, incmap) < 0)
		230	return;
		231
		232	if (!incmap->fm_mapped_extents)
		233	goto done;
		234
		235	count = fiemap->fm_mapped_extents + incmap->fm_mapped_extents;
		236	fiemap = realloc (fiemap, sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
		237	errno = ENOMEM;
143	if (req)	238	if (!fiemap)
		239	return;
		240
		241	req->ptr1 = fiemap;
		242
		243	for (count = 0; count < incmap->fm_mapped_extents; ++count)
144	{	244	{
145	ress = req->next;	245	struct fiemap_extent *e = incmap->fm_extents + count;
146		246
147	if (!ress)	247	if (e->fe_logical + e->fe_length >= end_offset)
148	{	248	goto done;
149	/* read any signals sent by the worker threads */
150	char buf [32];
151	while (read (respipe [0], buf, 32) == 32)
152	;
153		249
154	rese = 0;	250	fiemap->fm_extents [fiemap->fm_mapped_extents++] = *e;
155	}
156	}
157		251
158	pthread_mutex_unlock (&reslock);	252	if (e->fe_flags & FIEMAP_EXTENT_LAST)
		253	goto done;
159		254
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	{
190	SV *rv = &PL_sv_undef;
191
192	if (req->result >= 0)
193	{
194	char *buf = req->data2ptr;
195	AV *av = newAV ();
196
197	while (req->result)
198	{
199	SV *sv = newSVpv (buf, 0);
200
201	av_push (av, sv);
202	buf += SvCUR (sv) + 1;
203	req->result--;
204	}
205
206	rv = sv_2mortal (newRV_noinc ((SV *)av));
207	}
208
209	XPUSHs (rv);
210	}
211	else
212	{
213	XPUSHs (sv_2mortal (newSViv (req->result)));
214
215	if (req->type == REQ_OPEN)
216	{
217	/* convert fd to fh */
218	SV *fh;
219
220	PUTBACK;
221	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
222	SPAGAIN;
223
224	fh = SvREFCNT_inc (POPs);
225
226	PUSHMARK (SP);
227	XPUSHs (sv_2mortal (fh));
228	}
229	}
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	}	255	}
552	}	256	}
553		257
554	return res;	258	done:
555	}	259	req->result = 0;
556		260
557	/* read a full directory */	261	#else
		262	errno = ENOSYS;
		263	#endif
		264	}
		265
		266	/*****************************************************************************/
		267
		268	enum {
		269	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		270	};
		271
		272	typedef eio_req *aio_req;
		273	typedef eio_req *aio_req_ornot;
		274	typedef eio_wd aio_wd;
		275
		276	static SV *on_next_submit;
		277	static int next_pri = EIO_PRI_DEFAULT;
		278	static int max_outstanding;
		279
		280	static s_epipe respipe;
		281
		282	static void req_destroy (aio_req req);
		283	static void req_cancel (aio_req req);
		284
		285	static void
		286	want_poll (void)
		287	{
		288	/* write a dummy byte to the pipe so fh becomes ready */
		289	s_epipe_signal (&respipe);
		290	}
		291
		292	static void
		293	done_poll (void)
		294	{
		295	/* read any signals sent by the worker threads */
		296	s_epipe_drain (&respipe);
		297	}
		298
		299	/* must be called at most once */
		300	static SV *
		301	req_sv (aio_req req, HV *stash)
		302	{
		303	if (!req->self)
		304	{
		305	req->self = (SV *)newHV ();
		306	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		307	}
		308
		309	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		310	}
		311
		312	static SV *
		313	newSVaio_wd (aio_wd wd)
		314	{
		315	return sv_bless (newRV_noinc (newSViv ((intptr_t)wd)), aio_wd_stash);
		316	}
		317
		318	static aio_req
		319	SvAIO_REQ (SV *sv)
		320	{
		321	MAGIC *mg;
		322
		323	if (!SvROK (sv)
		324	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		325	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		326	&& SvSTASH (SvRV (sv)) != aio_req_stash
		327	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		328	croak ("object of class IO::AIO::REQ expected");
		329
		330	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		331
		332	return mg ? (aio_req)mg->mg_ptr : 0;
		333	}
		334
		335	static aio_wd
		336	SvAIO_WD (SV *sv)
		337	{
		338	if (!SvROK (sv)
		339	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		340	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		341	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		342
		343	return (aio_wd)(long)SvIVX (SvRV (sv));
		344	}
		345
		346	static SV *
		347	newmortalFH (int fd, int flags)
		348	{
		349	if (fd < 0)
		350	return &PL_sv_undef;
		351
		352	GV *gv = (GV *)sv_newmortal ();
		353	char sym[64];
		354	int symlen;
		355
		356	symlen = snprintf (sym, sizeof (sym), "fd#%d", fd);
		357	gv_init (gv, aio_stash, sym, symlen, 0);
		358
		359	symlen = snprintf (
		360	sym,
		361	sizeof (sym),
		362	"%s&=%d",
		363	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		364	fd
		365	);
		366
		367	return do_open (gv, sym, symlen, 0, 0, 0, 0)
		368	? (SV *)gv : &PL_sv_undef;
		369	}
		370
		371	static void
		372	aio_grp_feed (aio_req grp)
		373	{
		374	if (grp->sv2 && SvOK (grp->sv2))
		375	{
		376	dSP;
		377
		378	ENTER;
		379	SAVETMPS;
		380	PUSHMARK (SP);
		381	XPUSHs (req_sv (grp, aio_grp_stash));
		382	PUTBACK;
		383	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		384	SPAGAIN;
		385	FREETMPS;
		386	LEAVE;
		387	}
		388	}
		389
		390	static void
		391	req_submit (eio_req *req)
		392	{
		393	eio_submit (req);
		394
		395	if (expect_false (on_next_submit))
		396	{
		397	dSP;
		398	SV *cb = sv_2mortal (on_next_submit);
		399
		400	on_next_submit = 0;
		401
		402	PUSHMARK (SP);
		403	PUTBACK;
		404	call_sv (cb, G_DISCARD | G_EVAL);
		405	}
		406	}
		407
558	static int	408	static int
559	scandir_ (const char *path, void **namesp)	409	req_invoke (eio_req *req)
560	{	410	{
561	DIR *dirp = opendir (path);	411	if (req->flags & FLAG_SV2_RO_OFF)
562	union	412	SvREADONLY_off (req->sv2);
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		413
574	if (!dirp)	414	if (!EIO_CANCELLED (req) && req->callback)
575	return -1;
576
577	names = malloc (memlen);
578
579	for (;;)
580	{	415	{
581	errno = 0, readdir_r (dirp, &u.d, &entp);	416	dSP;
		417	static SV *sv_result_cache; /* caches the result integer SV */
		418	SV *sv_result;
582		419
583	if (!entp)	420	ENTER;
584	break;	421	SAVETMPS;
		422	PUSHMARK (SP);
		423	EXTEND (SP, 1);
585		424
586	name = entp->d_name;	425	/* do not recreate the result IV from scratch each time */
587		426	if (expect_true (sv_result_cache))
588	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589	{	427	{
590	int len = strlen (name) + 1;	428	sv_result = sv_result_cache; sv_result_cache = 0;
591		429	SvIV_set (sv_result, req->result);
592	res++;	430	SvIOK_only (sv_result);
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;
645
646	pthread_cond_wait (&reqwait, &reqlock);
647	}
648
649	pthread_mutex_unlock (&reqlock);
650
651	errno = 0; /* strictly unnecessary */
652
653	type = req->type;
654
655	switch (type)
656	{
657	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
658	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
659
660	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
661	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
662
663	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
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;
681
682	default:
683	req->result = ENOSYS;
684	break;
685	}
686
687	req->errorno = errno;
688
689	pthread_mutex_lock (&reslock);
690
691	req->next = 0;
692
693	if (rese)
694	{
695	rese->next = req;
696	rese = req;
697	}	431	}
698	else	432	else
699	{	433	{
700	rese = ress = req;	434	sv_result = newSViv (req->result);
701		435	SvREADONLY_on (sv_result);
702	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);
704	}	436	}
705		437
706	pthread_mutex_unlock (&reslock);	438	switch (req->type)
		439	{
		440	case EIO_WD_OPEN:
		441	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		442	break;
		443
		444	case EIO_READDIR:
		445	{
		446	SV *rv = &PL_sv_undef;
		447
		448	if (req->result >= 0)
		449	{
		450	int i;
		451	char *names = (char *)req->ptr2;
		452	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		453	AV *av = newAV ();
		454
		455	av_extend (av, req->result - 1);
		456
		457	for (i = 0; i < req->result; ++i)
		458	{
		459	if (req->int1 & EIO_READDIR_DENTS)
		460	{
		461	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		462
		463	if (req->int1 & EIO_READDIR_CUSTOM2)
		464	{
		465	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		466	AV *avent = newAV ();
		467
		468	av_extend (avent, 2);
		469
		470	if (!sv_type [ent->type])
		471	{
		472	sv_type [ent->type] = newSViv (ent->type);
		473	SvREADONLY_on (sv_type [ent->type]);
		474	}
		475
		476	av_store (avent, 0, namesv);
		477	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		478	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		479
		480	av_store (av, i, newRV_noinc ((SV *)avent));
		481	}
		482	else
		483	av_store (av, i, namesv);
		484
		485	++ent;
		486	}
		487	else
		488	{
		489	SV *name = newSVpv (names, 0);
		490	av_store (av, i, name);
		491	names += SvCUR (name) + 1;
		492	}
		493	}
		494
		495	rv = sv_2mortal (newRV_noinc ((SV *)av));
		496	}
		497
		498	PUSHs (rv);
		499
		500	if (req->int1 & EIO_READDIR_CUSTOM1)
		501	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		502	}
		503	break;
		504
		505	case EIO_OPEN:
		506	PUSHs (newmortalFH (req->result, req->int1 & (O_RDONLY | O_WRONLY | O_RDWR)));
		507	break;
		508
		509	case EIO_STATVFS:
		510	case EIO_FSTATVFS:
		511	{
		512	SV *rv = &PL_sv_undef;
		513
		514	#ifndef _WIN32
		515	if (req->result >= 0)
		516	{
		517	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		518	HV *hv = newHV ();
		519	/* POSIX requires fsid to be unsigned long, but AIX in its infinite wisdom
		520	* chooses to make it a struct.
		521	*/
		522	unsigned long fsid = 0;
		523	memcpy (&fsid, &f->f_fsid, sizeof (unsigned long) < sizeof (f->f_fsid) ? sizeof (unsigned long) : sizeof (f->f_fsid));
		524
		525	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		526
		527	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		528	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		529	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		530	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		531	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		532	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		533	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		534	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		535	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (fsid ), 0);
		536	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		537	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		538	}
		539	#endif
		540
		541	PUSHs (rv);
		542	}
		543
		544	break;
		545
		546	case EIO_GROUP:
		547	req->int1 = 2; /* mark group as finished */
		548
		549	if (req->sv1)
		550	{
		551	int i;
		552	AV *av = (AV *)req->sv1;
		553
		554	EXTEND (SP, AvFILL (av) + 1);
		555	for (i = 0; i <= AvFILL (av); ++i)
		556	PUSHs (*av_fetch (av, i, 0));
		557	}
		558	break;
		559
		560	case EIO_NOP:
		561	case EIO_BUSY:
		562	break;
		563
		564	case EIO_READLINK:
		565	case EIO_REALPATH:
		566	if (req->result > 0)
		567	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		568	break;
		569
		570	case EIO_STAT:
		571	case EIO_LSTAT:
		572	case EIO_FSTAT:
		573	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		574
		575	if (!(PL_laststatval = req->result))
		576	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		577	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		578
		579	PUSHs (sv_result);
		580	break;
		581
		582	case EIO_SEEK:
		583	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		584	break;
		585
		586	case EIO_READ:
		587	{
		588	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		589	*SvEND (req->sv2) = 0;
		590	SvPOK_only (req->sv2);
		591	SvSETMAGIC (req->sv2);
		592	PUSHs (sv_result);
		593	}
		594	break;
		595
		596	case EIO_CUSTOM:
		597	if (req->feed == fiemap)
		598	{
		599	#if HAVE_FIEMAP
		600	if (!req->result)
		601	{
		602	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		603
		604	if (fiemap->fm_extent_count)
		605	{
		606	AV *av = newAV ();
		607	int i;
		608
		609	while (fiemap->fm_mapped_extents)
		610	{
		611	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		612	AV *ext_av = newAV ();
		613
		614	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		615	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		616	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		617	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		618
		619	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		620	}
		621
		622	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		623	}
		624	else
		625	{
		626	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		627	PUSHs (sv_result);
		628	}
		629	}
		630	#endif
		631	}
		632	else
		633	PUSHs (sv_result);
		634	break;
		635
		636	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		637	if (req->result > 0)
		638	SvIV_set (sv_result, 0);
		639	/* FALLTHROUGH */
		640
		641	default:
		642	PUSHs (sv_result);
		643	break;
		644	}
		645
		646	errno = req->errorno;
		647
		648	PUTBACK;
		649	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		650	SPAGAIN;
		651
		652	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		653	SvREFCNT_dec (sv_result);
		654	else
		655	sv_result_cache = sv_result;
		656
		657	FREETMPS;
		658	LEAVE;
		659
		660	PUTBACK;
707	}	661	}
708	while (type != REQ_QUIT);	662
		663	return !!SvTRUE (ERRSV);
		664	}
		665
		666	static void
		667	req_destroy (aio_req req)
		668	{
		669	if (req->self)
		670	{
		671	sv_unmagic (req->self, PERL_MAGIC_ext);
		672	SvREFCNT_dec (req->self);
		673	}
		674
		675	SvREFCNT_dec (req->sv1);
		676	SvREFCNT_dec (req->sv2);
		677	SvREFCNT_dec (req->sv3);
		678	SvREFCNT_dec (req->sv4);
		679	SvREFCNT_dec (req->callback);
		680
		681	free (req);
		682	}
		683
		684	static void
		685	req_cancel_subs (aio_req grp)
		686	{
		687	if (grp->type != EIO_GROUP)
		688	return;
		689
		690	SvREFCNT_dec (grp->sv2);
		691	grp->sv2 = 0;
		692
		693	eio_grp_cancel (grp);
		694	}
		695
		696	static void ecb_cold
		697	create_respipe (void)
		698	{
		699	if (s_epipe_renew (&respipe))
		700	croak ("IO::AIO: unable to initialize result pipe");
		701	}
		702
		703	static void
		704	poll_wait (void)
		705	{
		706	while (eio_nreqs ())
		707	{
		708	int size;
		709
		710	X_LOCK (EIO_POOL->reslock);
		711	size = EIO_POOL->res_queue.size;
		712	X_UNLOCK (EIO_POOL->reslock);
		713
		714	if (size)
		715	return;
		716
		717	etp_maybe_start_thread (EIO_POOL);
		718
		719	s_epipe_wait (&respipe);
		720	}
		721	}
		722
		723	static int
		724	poll_cb (void)
		725	{
		726	for (;;)
		727	{
		728	int res = eio_poll ();
		729
		730	if (res > 0)
		731	croak (0);
		732
		733	if (!max_outstanding || max_outstanding > eio_nreqs ())
		734	return res;
		735
		736	poll_wait ();
		737	}
		738	}
		739
		740	static void ecb_cold
		741	reinit (void)
		742	{
		743	create_respipe ();
		744
		745	if (eio_init (want_poll, done_poll) < 0)
		746	croak ("IO::AIO: unable to initialise eio library");
		747	}
		748
		749	/*****************************************************************************/
		750
		751	#if !_POSIX_MAPPED_FILES
		752	# define mmap(addr,length,prot,flags,fd,offs) EIO_ENOSYS ()
		753	# define munmap(addr,length) EIO_ENOSYS ()
		754	#endif
		755
		756	#if !_POSIX_MEMORY_PROTECTION
		757	# define mprotect(addr,len,prot) EIO_ENOSYS ()
		758	#endif
		759
		760	#define MMAP_MAGIC PERL_MAGIC_ext
		761
		762	static int ecb_cold
		763	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		764	{
		765	int old_errno = errno;
		766	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		767	errno = old_errno;
		768
		769	mg->mg_obj = 0; /* just in case */
		770
		771	SvREADONLY_off (sv);
		772
		773	if (SvPVX (sv) != mg->mg_ptr)
		774	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		775
		776	SvCUR_set (sv, 0);
		777	SvPVX (sv) = 0;
		778	SvOK_off (sv);
709		779
710	return 0;	780	return 0;
711	}	781	}
712		782
		783	static MGVTBL mmap_vtbl = {
		784	0, 0, 0, 0, mmap_free
		785	};
		786
713	/*****************************************************************************/	787	/*****************************************************************************/
714		788
715	static void atfork_prepare (void)	789	static SV *
		790	get_cb (SV *cb_sv)
716	{	791	{
717	pthread_mutex_lock (&reqlock);	792	SvGETMAGIC (cb_sv);
718	pthread_mutex_lock (&reslock);	793	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
719	#if !HAVE_PREADWRITE
720	pthread_mutex_lock (&preadwritelock);
721	#endif
722	#if !HAVE_READDIR_R
723	pthread_mutex_lock (&readdirlock);
724	#endif
725	}	794	}
726		795
727	static void atfork_parent (void)	796	static aio_req ecb_noinline
		797	dreq (SV *callback)
728	{	798	{
729	#if !HAVE_READDIR_R	799	SV *cb_cv;
730	pthread_mutex_unlock (&readdirlock);
731	#endif
732	#if !HAVE_PREADWRITE
733	pthread_mutex_unlock (&preadwritelock);
734	#endif
735	pthread_mutex_unlock (&reslock);
736	pthread_mutex_unlock (&reqlock);
737	}
738
739	static void atfork_child (void)
740	{
741	aio_req prv;	800	aio_req req;
		801	int req_pri = next_pri;
		802	next_pri = EIO_PRI_DEFAULT;
742		803
743	started = 0;	804	cb_cv = get_cb (callback);
744		805
745	while (reqs)	806	req = calloc (sizeof (*req), 1);
		807	if (!req)
		808	croak ("out of memory during eio_req allocation");
		809
		810	req->callback = SvREFCNT_inc (cb_cv);
		811	req->pri = req_pri;
		812
		813	return req;
		814	}
		815
		816	#define dREQ \
		817	aio_req req = dreq (callback); \
		818
		819	#define REQ_SEND \
		820	PUTBACK; \
		821	req_submit (req); \
		822	SPAGAIN; \
		823	\
		824	if (GIMME_V != G_VOID) \
		825	XPUSHs (req_sv (req, aio_req_stash));
		826
		827	ecb_inline void
		828	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		829	{
		830	if (expect_false (SvROK (path)))
746	{	831	{
747	prv = reqs;	832	SV *rv = SvRV (path);
748	reqs = prv->next;	833	SV *wdob;
749	free_req (prv);	834
		835	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		836	{
		837	path = AvARRAY (rv)[1];
		838	wdob = AvARRAY (rv)[0];
		839
		840	if (SvOK (wdob))
		841	{
		842	*wd = SvAIO_WD (wdob);
		843	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		844	}
		845	else
		846	*wd = EIO_INVALID_WD;
		847	}
		848	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		849	{
		850	*wd = (aio_wd)(long)SvIVX (rv);
		851	*wdsv = SvREFCNT_inc_NN (rv);
		852	*ptr = ".";
		853	return; /* path set to "." */
		854	}
		855	else
		856	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
750	}	857	}
751		858
752	reqs = reqe = 0;	859	*pathsv = newSVsv (path);
753		860	*ptr = SvPVbyte_nolen (*pathsv);
754	while (ress)	861	}
		862
		863	static void ecb_noinline
		864	req_set_path1 (aio_req req, SV *path)
		865	{
		866	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		867	}
		868
		869	static void ecb_noinline
		870	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		871	{
		872	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		873
		874	switch (SvTYPE (rv))
755	{	875	{
756	prv = ress;	876	case SVt_PVIO:
757	ress = prv->next;	877	case SVt_PVLV:
758	free_req (prv);	878	case SVt_PVGV:
		879	req->type = type_fh;
		880	req->sv1 = newSVsv (fh_or_path);
		881	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		882	break;
		883
		884	default:
		885	req->type = type_path;
		886	req_set_path1 (req, fh_or_path);
		887	break;
759	}	888	}
760
761	ress = rese = 0;
762
763	close (respipe [0]);
764	close (respipe [1]);
765	create_pipe ();
766
767	atfork_parent ();
768	}	889	}
769		890
770	#define dREQ \	891	XS(boot_IO__AIO) ecb_cold;
771	aio_req req; \	892
772	\
773	if (SvOK (callback) && !SvROK (callback)) \
774	croak ("clalback must be undef or of reference type"); \
775	\
776	Newz (0, req, 1, aio_cb); \
777	if (!req) \
778	croak ("out of memory during aio_req allocation"); \
779	\
780	req->callback = newSVsv (callback);
781
782	MODULE = IO::AIO PACKAGE = IO::AIO	893	MODULE = IO::AIO PACKAGE = IO::AIO
783		894
784	PROTOTYPES: ENABLE	895	PROTOTYPES: ENABLE
785		896
786	BOOT:	897	BOOT:
787	{	898	{
		899	static const struct {
		900	const char *name;
		901	IV iv;
		902	} *civ, const_iv[] = {
		903	# define const_niv(name, value) { # name, (IV) value },
		904	# define const_iv(name) { # name, (IV) name },
		905	# define const_eio(name) { # name, (IV) EIO_ ## name },
		906
		907	/* you have to re-run ./gendef0 after adding/removing any constants here */
		908	/* the first block can be undef if missing */
		909	const_iv (ENOSYS)
		910	const_iv (EXDEV)
		911	const_iv (EBADR)
		912
		913	/* for lseek */
		914	const_iv (SEEK_DATA)
		915	const_iv (SEEK_HOLE)
		916
		917	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		918	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		919	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		920	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		921	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		922	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		923
		924	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		925	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		926	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		927	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		928	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		929
		930	/* the second block will be 0 when missing */
		931	const_iv (O_RDONLY)
		932	const_iv (O_WRONLY)
		933	const_iv (O_RDWR)
		934	const_iv (O_CREAT)
		935	const_iv (O_TRUNC)
		936	const_iv (O_EXCL)
		937	const_iv (O_APPEND)
		938
		939	const_iv (O_ASYNC)
		940	const_iv (O_DIRECT)
		941	const_iv (O_NOATIME)
		942
		943	const_iv (O_CLOEXEC)
		944	const_iv (O_NOCTTY)
		945	const_iv (O_NOFOLLOW)
		946	const_iv (O_NONBLOCK)
		947	const_iv (O_EXEC)
		948	const_iv (O_SEARCH)
		949	const_iv (O_DIRECTORY)
		950	const_iv (O_DSYNC)
		951	const_iv (O_RSYNC)
		952	const_iv (O_SYNC)
		953	const_iv (O_PATH)
		954	const_iv (O_TMPFILE)
		955	const_iv (O_TTY_INIT)
		956
		957	const_iv (S_IFIFO)
		958	const_iv (S_IFCHR)
		959	const_iv (S_IFBLK)
		960	const_iv (S_IFLNK)
		961	const_iv (S_IFREG)
		962	const_iv (S_IFDIR)
		963	const_iv (S_IFWHT)
		964	const_iv (S_IFSOCK)
		965	const_iv (S_IFMT)
		966
		967	const_iv (ST_RDONLY)
		968	const_iv (ST_NOSUID)
		969	const_iv (ST_NODEV)
		970	const_iv (ST_NOEXEC)
		971	const_iv (ST_SYNCHRONOUS)
		972	const_iv (ST_MANDLOCK)
		973	const_iv (ST_WRITE)
		974	const_iv (ST_APPEND)
		975	const_iv (ST_IMMUTABLE)
		976	const_iv (ST_NOATIME)
		977	const_iv (ST_NODIRATIME)
		978	const_iv (ST_RELATIME)
		979
		980	const_iv (PROT_NONE)
		981	const_iv (PROT_EXEC)
		982	const_iv (PROT_READ)
		983	const_iv (PROT_WRITE)
		984
		985	const_iv (MAP_PRIVATE)
		986	const_iv (MAP_SHARED)
		987	const_iv (MAP_FIXED)
		988	const_iv (MAP_ANONYMOUS)
		989
		990	/* linuxish */
		991	const_iv (MAP_LOCKED)
		992	const_iv (MAP_NORESERVE)
		993	const_iv (MAP_POPULATE)
		994	const_iv (MAP_NONBLOCK)
		995	const_iv (MAP_GROWSDOWN)
		996	const_iv (MAP_32BIT)
		997	const_iv (MAP_HUGETLB)
		998	const_iv (MAP_STACK)
		999
		1000	const_iv (F_DUPFD_CLOEXEC)
		1001
		1002	const_iv (F_OFD_GETLK)
		1003	const_iv (F_OFD_SETLK)
		1004	const_iv (F_OFD_GETLKW)
		1005
		1006	const_iv (FIFREEZE)
		1007	const_iv (FITHAW)
		1008	const_iv (FITRIM)
		1009	const_iv (FICLONE)
		1010	const_iv (FICLONERANGE)
		1011	const_iv (FIDEDUPERANGE)
		1012
		1013	const_iv (FS_IOC_GETFLAGS)
		1014	const_iv (FS_IOC_SETFLAGS)
		1015	const_iv (FS_IOC_GETVERSION)
		1016	const_iv (FS_IOC_SETVERSION)
		1017	const_iv (FS_IOC_FIEMAP)
		1018	const_iv (FS_IOC_FSGETXATTR)
		1019	const_iv (FS_IOC_FSSETXATTR)
		1020	const_iv (FS_IOC_SET_ENCRYPTION_POLICY)
		1021	const_iv (FS_IOC_GET_ENCRYPTION_PWSALT)
		1022	const_iv (FS_IOC_GET_ENCRYPTION_POLICY)
		1023
		1024	const_iv (FS_KEY_DESCRIPTOR_SIZE)
		1025
		1026	const_iv (FS_SECRM_FL)
		1027	const_iv (FS_UNRM_FL)
		1028	const_iv (FS_COMPR_FL)
		1029	const_iv (FS_SYNC_FL)
		1030	const_iv (FS_IMMUTABLE_FL)
		1031	const_iv (FS_APPEND_FL)
		1032	const_iv (FS_NODUMP_FL)
		1033	const_iv (FS_NOATIME_FL)
		1034	const_iv (FS_DIRTY_FL)
		1035	const_iv (FS_COMPRBLK_FL)
		1036	const_iv (FS_NOCOMP_FL)
		1037	const_iv (FS_ENCRYPT_FL)
		1038	const_iv (FS_BTREE_FL)
		1039	const_iv (FS_INDEX_FL)
		1040	const_iv (FS_JOURNAL_DATA_FL)
		1041	const_iv (FS_NOTAIL_FL)
		1042	const_iv (FS_DIRSYNC_FL)
		1043	const_iv (FS_TOPDIR_FL)
		1044	const_iv (FS_FL_USER_MODIFIABLE)
		1045
		1046	const_iv (FS_XFLAG_REALTIME)
		1047	const_iv (FS_XFLAG_PREALLOC)
		1048	const_iv (FS_XFLAG_IMMUTABLE)
		1049	const_iv (FS_XFLAG_APPEND)
		1050	const_iv (FS_XFLAG_SYNC)
		1051	const_iv (FS_XFLAG_NOATIME)
		1052	const_iv (FS_XFLAG_NODUMP)
		1053	const_iv (FS_XFLAG_RTINHERIT)
		1054	const_iv (FS_XFLAG_PROJINHERIT)
		1055	const_iv (FS_XFLAG_NOSYMLINKS)
		1056	const_iv (FS_XFLAG_EXTSIZE)
		1057	const_iv (FS_XFLAG_EXTSZINHERIT)
		1058	const_iv (FS_XFLAG_NODEFRAG)
		1059	const_iv (FS_XFLAG_FILESTREAM)
		1060	const_iv (FS_XFLAG_DAX)
		1061	const_iv (FS_XFLAG_HASATTR)
		1062
		1063	const_iv (FIEMAP_FLAG_SYNC)
		1064	const_iv (FIEMAP_FLAG_XATTR)
		1065	const_iv (FIEMAP_FLAGS_COMPAT)
		1066	const_iv (FIEMAP_EXTENT_LAST)
		1067	const_iv (FIEMAP_EXTENT_UNKNOWN)
		1068	const_iv (FIEMAP_EXTENT_DELALLOC)
		1069	const_iv (FIEMAP_EXTENT_ENCODED)
		1070	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		1071	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		1072	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		1073	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		1074	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		1075	const_iv (FIEMAP_EXTENT_MERGED)
		1076	const_iv (FIEMAP_EXTENT_SHARED)
		1077
		1078	const_iv (SPLICE_F_MOVE)
		1079	const_iv (SPLICE_F_NONBLOCK)
		1080	const_iv (SPLICE_F_MORE)
		1081	const_iv (SPLICE_F_GIFT)
		1082
		1083	/* these are libeio constants, and are independent of gendef0 */
		1084	const_eio (SEEK_SET)
		1085	const_eio (SEEK_CUR)
		1086	const_eio (SEEK_END)
		1087
		1088	const_eio (MCL_FUTURE)
		1089	const_eio (MCL_CURRENT)
		1090
		1091	const_eio (MS_ASYNC)
		1092	const_eio (MS_INVALIDATE)
		1093	const_eio (MS_SYNC)
		1094
		1095	const_eio (MT_MODIFY)
		1096
		1097	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1098	const_eio (SYNC_FILE_RANGE_WRITE)
		1099	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1100
		1101	const_eio (FALLOC_FL_KEEP_SIZE)
		1102	const_eio (FALLOC_FL_PUNCH_HOLE)
		1103	const_eio (FALLOC_FL_COLLAPSE_RANGE)
		1104	const_eio (FALLOC_FL_ZERO_RANGE)
		1105	const_eio (FALLOC_FL_INSET_RANGE)
		1106	const_eio (FALLOC_FL_UNSHARE_RANGE)
		1107
		1108	const_eio (RENAME_NOREPLACE)
		1109	const_eio (RENAME_EXCHANGE)
		1110	const_eio (RENAME_WHITEOUT)
		1111
		1112	const_eio (READDIR_DENTS)
		1113	const_eio (READDIR_DIRS_FIRST)
		1114	const_eio (READDIR_STAT_ORDER)
		1115	const_eio (READDIR_FOUND_UNKNOWN)
		1116
		1117	const_eio (DT_UNKNOWN)
		1118	const_eio (DT_FIFO)
		1119	const_eio (DT_CHR)
		1120	const_eio (DT_DIR)
		1121	const_eio (DT_BLK)
		1122	const_eio (DT_REG)
		1123	const_eio (DT_LNK)
		1124	const_eio (DT_SOCK)
		1125	const_eio (DT_WHT)
		1126	};
		1127
788	HV *stash = gv_stashpv ("IO::AIO", 1);	1128	aio_stash = gv_stashpv ("IO::AIO" , 1);
789	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1129	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
790	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1130	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
791	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1131	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
792		1132
793	create_pipe ();	1133	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1134	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
795	}
796		1135
		1136	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1137
		1138	reinit ();
		1139	}
		1140
797	void	1141	void
798	min_parallel (nthreads)	1142	reinit ()
799	int nthreads	1143	PROTOTYPE:
		1144
		1145	void
		1146	max_poll_reqs (unsigned int nreqs)
800	PROTOTYPE: $	1147	PROTOTYPE: $
		1148	CODE:
		1149	eio_set_max_poll_reqs (nreqs);
801		1150
802	void	1151	void
803	max_parallel (nthreads)	1152	max_poll_time (double nseconds)
804	int nthreads
805	PROTOTYPE: $	1153	PROTOTYPE: $
806
807	int
808	max_outstanding (nreqs)
809	int nreqs
810	PROTOTYPE: $
811	CODE:	1154	CODE:
812	RETVAL = max_outstanding;	1155	eio_set_max_poll_time (nseconds);
		1156
		1157	void
		1158	min_parallel (unsigned int nthreads)
		1159	PROTOTYPE: $
		1160	CODE:
		1161	eio_set_min_parallel (nthreads);
		1162
		1163	void
		1164	max_parallel (unsigned int nthreads)
		1165	PROTOTYPE: $
		1166	CODE:
		1167	eio_set_max_parallel (nthreads);
		1168
		1169	void
		1170	max_idle (unsigned int nthreads)
		1171	PROTOTYPE: $
		1172	CODE:
		1173	eio_set_max_idle (nthreads);
		1174
		1175	void
		1176	idle_timeout (unsigned int seconds)
		1177	PROTOTYPE: $
		1178	CODE:
		1179	eio_set_idle_timeout (seconds);
		1180
		1181	void
		1182	max_outstanding (unsigned int maxreqs)
		1183	PROTOTYPE: $
		1184	CODE:
813	max_outstanding = nreqs;	1185	max_outstanding = maxreqs;
814		1186
815	void	1187	void
816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1188	aio_wd (SV8 *pathname, SV *callback = &PL_sv_undef)
817	SV * pathname
818	int flags
819	int mode
820	SV * callback
821	PROTOTYPE: $$$;$
822	CODE:	1189	PPCODE:
823	{	1190	{
824	dREQ;	1191	dREQ;
825		1192
		1193	req->type = EIO_WD_OPEN;
		1194	req_set_path1 (req, pathname);
		1195
		1196	REQ_SEND;
		1197	}
		1198
		1199	void
		1200	aio_open (SV8 *pathname, int flags, int mode, SV *callback = &PL_sv_undef)
		1201	PPCODE:
		1202	{
		1203	dREQ;
		1204
826	req->type = REQ_OPEN;	1205	req->type = EIO_OPEN;
827	req->data = newSVsv (pathname);	1206	req_set_path1 (req, pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);
829	req->fd = flags;	1207	req->int1 = flags;
830	req->mode = mode;	1208	req->int2 = mode;
831		1209
832	send_req (req);	1210	REQ_SEND;
833	}	1211	}
834		1212
835	void	1213	void
836	aio_close (fh,callback=&PL_sv_undef)	1214	aio_fsync (SV *fh, SV *callback = &PL_sv_undef)
837	SV * fh
838	SV * callback
839	PROTOTYPE: $;$
840	ALIAS:	1215	ALIAS:
841	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	1216	aio_fsync = EIO_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	1217	aio_fdatasync = EIO_FDATASYNC
		1218	aio_syncfs = EIO_SYNCFS
844	CODE:	1219	PPCODE:
845	{	1220	{
		1221	int fd = s_fileno_croak (fh, 0);
846	dREQ;	1222	dREQ;
847		1223
848	req->type = ix;	1224	req->type = ix;
849	req->fh = newSVsv (fh);	1225	req->sv1 = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1226	req->int1 = fd;
851		1227
852	send_req (req);	1228	REQ_SEND;
853	}	1229	}
854		1230
855	void	1231	void
		1232	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback = &PL_sv_undef)
		1233	PPCODE:
		1234	{
		1235	int fd = s_fileno_croak (fh, 0);
		1236	dREQ;
		1237
		1238	req->type = EIO_SYNC_FILE_RANGE;
		1239	req->sv1 = newSVsv (fh);
		1240	req->int1 = fd;
		1241	req->offs = offset;
		1242	req->size = nbytes;
		1243	req->int2 = flags;
		1244
		1245	REQ_SEND;
		1246	}
		1247
		1248	void
		1249	aio_allocate (SV *fh, int mode, off_t offset, size_t len, SV *callback = &PL_sv_undef)
		1250	PPCODE:
		1251	{
		1252	int fd = s_fileno_croak (fh, 0);
		1253	dREQ;
		1254
		1255	req->type = EIO_FALLOCATE;
		1256	req->sv1 = newSVsv (fh);
		1257	req->int1 = fd;
		1258	req->int2 = mode;
		1259	req->offs = offset;
		1260	req->size = len;
		1261
		1262	REQ_SEND;
		1263	}
		1264
		1265	void
		1266	aio_close (SV *fh, SV *callback = &PL_sv_undef)
		1267	PPCODE:
		1268	{
		1269	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1270	int fd = s_fileno_croak (fh, 0);
		1271	dREQ;
		1272
		1273	if (expect_false (close_fd < 0))
		1274	{
		1275	int pipefd [2];
		1276
		1277	if (
		1278	#ifdef _WIN32
		1279	_pipe (pipefd, 1, _O_BINARY) < 0
		1280	#else
		1281	pipe (pipefd) < 0
		1282	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1283	#endif
		1284	|| close (pipefd [1]) < 0
		1285	)
		1286	abort (); /*D*/
		1287
		1288	close_fd = pipefd [0];
		1289	}
		1290
		1291	req->type = EIO_DUP2;
		1292	req->int1 = close_fd;
		1293	req->sv2 = newSVsv (fh);
		1294	req->int2 = fd;
		1295
		1296	REQ_SEND;
		1297	}
		1298
		1299	void
		1300	aio_seek (SV *fh, SV *offset, int whence, SV *callback = &PL_sv_undef)
		1301	PPCODE:
		1302	{
		1303	int fd = s_fileno_croak (fh, 0);
		1304	dREQ;
		1305
		1306	req->type = EIO_SEEK;
		1307	req->sv1 = newSVsv (fh);
		1308	req->int1 = fd;
		1309	req->offs = SvVAL64 (offset);
		1310	req->int2 = whence;
		1311
		1312	REQ_SEND;
		1313	}
		1314
		1315	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1316	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:	1317	ALIAS:
864	aio_read = REQ_READ	1318	aio_read = EIO_READ
865	aio_write = REQ_WRITE	1319	aio_write = EIO_WRITE
866	PROTOTYPE: $$$$$;$
867	CODE:	1320	PPCODE:
868	{	1321	{
869	aio_req req;
870	STRLEN svlen;	1322	STRLEN svlen;
		1323	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
871	char *svptr = SvPVbyte (data, svlen);	1324	char *svptr = SvPVbyte (data, svlen);
872		1325	UV len = SvUV (length);
873	SvUPGRADE (data, SVt_PV);
874	SvPOK_on (data);
875		1326
876	if (dataoffset < 0)	1327	if (dataoffset < 0)
877	dataoffset += svlen;	1328	dataoffset += svlen;
878		1329
879	if (dataoffset < 0 || dataoffset > svlen)	1330	if (dataoffset < 0 || dataoffset > svlen)
880	croak ("data offset outside of string");	1331	croak ("dataoffset outside of data scalar");
881		1332
882	if (ix == REQ_WRITE)	1333	if (ix == EIO_WRITE)
883	{	1334	{
884	/* write: check length and adjust. */	1335	/* write: check length and adjust. */
885	if (length < 0 || length + dataoffset > svlen)	1336	if (!SvOK (length) || len + dataoffset > svlen)
886	length = svlen - dataoffset;	1337	len = svlen - dataoffset;
887	}	1338	}
888	else	1339	else
889	{	1340	{
890	/* read: grow scalar as necessary */	1341	/* read: check type and grow scalar as necessary */
		1342	if (!SvPOK (data) || SvLEN (data) >= SvCUR (data))
891	svptr = SvGROW (data, length + dataoffset);	1343	svptr = sv_grow (data, len + dataoffset + 1);
		1344	else if (SvCUR (data) < len + dataoffset)
		1345	croak ("length + dataoffset outside of scalar, and cannot grow");
892	}	1346	}
893
894	if (length < 0)
895	croak ("length must not be negative");
896		1347
897	{	1348	{
898	dREQ;	1349	dREQ;
899		1350
900	req->type = ix;	1351	req->type = ix;
901	req->fh = newSVsv (fh);	1352	req->sv1 = newSVsv (fh);
902	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1353	req->int1 = fd;
903	: IoOFP (sv_2io (fh)));	1354	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
904	req->offset = offset;	1355	req->size = len;
905	req->length = length;
906	req->data = SvREFCNT_inc (data);	1356	req->sv2 = SvREFCNT_inc (data);
907	req->dataptr = (char *)svptr + dataoffset;	1357	req->ptr2 = (char *)svptr + dataoffset;
		1358	req->stroffset = dataoffset;
908		1359
909	if (!SvREADONLY (data))	1360	if (!SvREADONLY (data))
910	{	1361	{
911	SvREADONLY_on (data);	1362	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	1363	req->flags |= FLAG_SV2_RO_OFF;
913	}	1364	}
914		1365
915	send_req (req);	1366	REQ_SEND;
916	}	1367	}
917	}	1368	}
918		1369
919	void	1370	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1371	aio_ioctl (SV *fh, unsigned long request, SV8 *arg, 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: $$$$;$
927	CODE:
928	{
929	dREQ;
930
931	req->type = REQ_SENDFILE;
932	req->fh = newSVsv (out_fh);
933	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
934	req->fh2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
936	req->offset = in_offset;
937	req->length = length;
938
939	send_req (req);
940	}
941
942	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)
944	SV * fh
945	UV offset
946	IV length
947	SV * callback
948	PROTOTYPE: $$$;$
949	CODE:
950	{
951	dREQ;
952
953	req->type = REQ_READAHEAD;
954	req->fh = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));
956	req->offset = offset;
957	req->length = length;
958
959	send_req (req);
960	}
961
962	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)
964	SV * fh_or_path
965	SV * callback
966	ALIAS:	1372	ALIAS:
967	aio_stat = REQ_STAT	1373	aio_ioctl = EIO_IOCTL
968	aio_lstat = REQ_LSTAT	1374	aio_fcntl = EIO_FCNTL
969	CODE:	1375	PPCODE:
970	{	1376	{
971	dREQ;	1377	int fd = s_fileno_croak (fh, 0);
		1378	char *svptr;
972		1379
973	New (0, req->statdata, 1, Stat_t);	1380	if (SvPOK (arg) || !SvNIOK (arg))
974	if (!req->statdata)
975	{	1381	{
976	free_req (req);	1382	STRLEN svlen;
977	croak ("out of memory during aio_req->statdata allocation");	1383	/* perl uses IOCPARM_LEN for fcntl, so we do, too */
978	}	1384	#ifdef IOCPARM_LEN
		1385	STRLEN need = IOCPARM_LEN (request);
		1386	#else
		1387	STRLEN need = 256;
		1388	#endif
979		1389
980	if (SvPOK (fh_or_path))	1390	if (svlen < need)
981	{	1391	svptr = SvGROW (arg, need);
982	req->type = ix;
983	req->data = newSVsv (fh_or_path);
984	req->dataptr = SvPVbyte_nolen (req->data);
985	}	1392	}
986	else	1393	else
		1394	svptr = (char *)SvIV (arg);
		1395
987	{	1396	{
		1397	dREQ;
		1398
988	req->type = REQ_FSTAT;	1399	req->type = ix;
989	req->fh = newSVsv (fh_or_path);	1400	req->sv1 = newSVsv (fh);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1401	req->int1 = fd;
		1402	req->int2 = (long)request;
		1403	req->sv2 = SvREFCNT_inc (arg);
		1404	req->ptr2 = svptr;
		1405
		1406	REQ_SEND;
991	}	1407	}
992
993	send_req (req);
994	}	1408	}
995		1409
996	void	1410	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	1411	aio_readlink (SV8 *pathname, SV *callback = &PL_sv_undef)
998	SV * pathname
999	SV * callback
1000	ALIAS:	1412	ALIAS:
1001	aio_unlink = REQ_UNLINK
1002	aio_rmdir = REQ_RMDIR
1003	aio_readdir = REQ_READDIR	1413	aio_readlink = EIO_READLINK
		1414	aio_realpath = EIO_REALPATH
		1415	PPCODE:
		1416	{
		1417	dREQ;
		1418
		1419	req->type = ix;
		1420	req_set_path1 (req, pathname);
		1421
		1422	REQ_SEND;
		1423	}
		1424
		1425	void
		1426	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback = &PL_sv_undef)
		1427	PPCODE:
		1428	{
		1429	int ifd = s_fileno_croak (in_fh , 0);
		1430	int ofd = s_fileno_croak (out_fh, 1);
		1431	dREQ;
		1432
		1433	req->type = EIO_SENDFILE;
		1434	req->sv1 = newSVsv (out_fh);
		1435	req->int1 = ofd;
		1436	req->sv2 = newSVsv (in_fh);
		1437	req->int2 = ifd;
		1438	req->offs = in_offset;
		1439	req->size = length;
		1440
		1441	REQ_SEND;
		1442	}
		1443
		1444	void
		1445	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback = &PL_sv_undef)
		1446	PPCODE:
		1447	{
		1448	int fd = s_fileno_croak (fh, 0);
		1449	dREQ;
		1450
		1451	req->type = EIO_READAHEAD;
		1452	req->sv1 = newSVsv (fh);
		1453	req->int1 = fd;
		1454	req->offs = offset;
		1455	req->size = length;
		1456
		1457	REQ_SEND;
		1458	}
		1459
		1460	void
		1461	aio_stat (SV8 *fh_or_path, SV *callback = &PL_sv_undef)
		1462	ALIAS:
		1463	aio_stat = EIO_STAT
		1464	aio_lstat = EIO_LSTAT
		1465	aio_statvfs = EIO_STATVFS
		1466	PPCODE:
		1467	{
		1468	dREQ;
		1469
		1470	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1471
		1472	REQ_SEND;
		1473	}
		1474
		1475	UV
		1476	major (UV dev)
		1477	ALIAS:
		1478	minor = 1
1004	CODE:	1479	CODE:
		1480	RETVAL = ix ? minor (dev) : major (dev);
		1481	OUTPUT:
		1482	RETVAL
		1483
		1484	UV
		1485	makedev (UV maj, UV min)
		1486	CODE:
		1487	RETVAL = makedev (maj, min);
		1488	OUTPUT:
		1489	RETVAL
		1490
		1491	void
		1492	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback = &PL_sv_undef)
		1493	PPCODE:
		1494	{
		1495	dREQ;
		1496
		1497	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1498	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1499	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
		1500
		1501	REQ_SEND;
		1502	}
		1503
		1504	void
		1505	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback = &PL_sv_undef)
		1506	PPCODE:
		1507	{
		1508	dREQ;
		1509
		1510	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1511	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1512
		1513	REQ_SEND;
		1514	}
		1515
		1516	void
		1517	aio_chmod (SV8 *fh_or_path, int mode, SV *callback = &PL_sv_undef)
		1518	PPCODE:
		1519	{
		1520	dREQ;
		1521
		1522	req->int2 = mode;
		1523	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1524
		1525	REQ_SEND;
		1526	}
		1527
		1528	void
		1529	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback = &PL_sv_undef)
		1530	PPCODE:
		1531	{
		1532	dREQ;
		1533
		1534	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1535	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1536	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1537
		1538	REQ_SEND;
		1539	}
		1540
		1541	void
		1542	aio_readdirx (SV8 *pathname, IV flags, SV *callback = &PL_sv_undef)
		1543	PPCODE:
		1544	{
		1545	dREQ;
		1546
		1547	req->type = EIO_READDIR;
		1548	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1549
		1550	if (flags & EIO_READDIR_DENTS)
		1551	req->int1 |= EIO_READDIR_CUSTOM2;
		1552
		1553	req_set_path1 (req, pathname);
		1554
		1555	REQ_SEND;
		1556	}
		1557
		1558	void
		1559	aio_mkdir (SV8 *pathname, int mode, SV *callback = &PL_sv_undef)
		1560	PPCODE:
		1561	{
		1562	dREQ;
		1563
		1564	req->type = EIO_MKDIR;
		1565	req->int2 = mode;
		1566	req_set_path1 (req, pathname);
		1567
		1568	REQ_SEND;
		1569	}
		1570
		1571	void
		1572	aio_unlink (SV8 *pathname, SV *callback = &PL_sv_undef)
		1573	ALIAS:
		1574	aio_unlink = EIO_UNLINK
		1575	aio_rmdir = EIO_RMDIR
		1576	aio_readdir = EIO_READDIR
		1577	PPCODE:
1005	{	1578	{
1006	dREQ;	1579	dREQ;
1007		1580
1008	req->type = ix;	1581	req->type = ix;
1009	req->data = newSVsv (pathname);	1582	req_set_path1 (req, pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);
1011
1012	send_req (req);
1013	}
1014		1583
		1584	REQ_SEND;
		1585	}
		1586
1015	void	1587	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1588	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback = &PL_sv_undef)
1017	SV * oldpath
1018	SV * newpath
1019	SV * callback
1020	ALIAS:	1589	ALIAS:
1021	aio_link = REQ_LINK	1590	aio_link = EIO_LINK
1022	aio_symlink = REQ_SYMLINK	1591	aio_symlink = EIO_SYMLINK
1023	aio_rename = REQ_RENAME	1592	aio_rename = EIO_RENAME
1024	CODE:	1593	PPCODE:
1025	{	1594	{
		1595	eio_wd wd2 = 0;
1026	dREQ;	1596	dREQ;
1027		1597
1028	req->type = ix;	1598	req->type = ix;
1029	req->fh = newSVsv (oldpath);	1599	req_set_path1 (req, oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	1600	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1031	req->data = newSVsv (newpath);	1601	req->int3 = (long)wd2;
1032	req->dataptr = SvPVbyte_nolen (req->data);
1033		1602
1034	send_req (req);	1603	REQ_SEND;
1035	}	1604	}
1036		1605
1037	#if 0
1038
1039	# undocumented, because it does not cancel active requests
1040	void	1606	void
1041	cancel_most_requests ()	1607	aio_rename2 (SV8 *oldpath, SV8 *newpath, int flags = 0, SV *callback = &PL_sv_undef)
1042	PROTOTYPE:	1608	PPCODE:
		1609	{
		1610	eio_wd wd2 = 0;
		1611	dREQ;
		1612
		1613	req->type = EIO_RENAME;
		1614	req_set_path1 (req, oldpath);
		1615	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
		1616	req->int2 = flags;
		1617	req->int3 = (long)wd2;
		1618
		1619	REQ_SEND;
		1620	}
		1621
		1622	void
		1623	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback = &PL_sv_undef)
		1624	PPCODE:
		1625	{
		1626	dREQ;
		1627
		1628	req->type = EIO_MKNOD;
		1629	req->int2 = (mode_t)mode;
		1630	req->offs = dev;
		1631	req_set_path1 (req, pathname);
		1632
		1633	REQ_SEND;
		1634	}
		1635
		1636	void
		1637	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = -1, SV *callback = &PL_sv_undef)
		1638	ALIAS:
		1639	aio_mtouch = EIO_MTOUCH
		1640	aio_msync = EIO_MSYNC
1043	CODE:	1641	PPCODE:
1044	{	1642	{
1045	aio_req *req;	1643	STRLEN svlen;
		1644	char *svptr = SvPVbyte (data, svlen);
		1645	UV len = SvUV (length);
1046		1646
1047	pthread_mutex_lock (&reqlock);	1647	if (flags < 0)
1048	for (req = reqs; req; req = req->next)	1648	flags = ix == EIO_MSYNC ? EIO_MS_SYNC : 0;
1049	req->flags |= 1;
1050	pthread_mutex_unlock (&reqlock);
1051		1649
1052	pthread_mutex_lock (&reslock);	1650	if (offset < 0)
1053	for (req = ress; req; req = req->next)	1651	offset += svlen;
1054	req->flags |= 1;
1055	pthread_mutex_unlock (&reslock);
1056	}
1057		1652
		1653	if (offset < 0 || offset > svlen)
		1654	croak ("offset outside of scalar");
		1655
		1656	if (!SvOK (length) || len + offset > svlen)
		1657	len = svlen - offset;
		1658
		1659	{
		1660	dREQ;
		1661
		1662	req->type = ix;
		1663	req->sv2 = SvREFCNT_inc (data);
		1664	req->ptr2 = (char *)svptr + offset;
		1665	req->size = len;
		1666	req->int1 = flags;
		1667
		1668	REQ_SEND;
		1669	}
		1670	}
		1671
		1672	void
		1673	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback = &PL_sv_undef)
		1674	PPCODE:
		1675	{
		1676	STRLEN svlen;
		1677	char *svptr = SvPVbyte (data, svlen);
		1678	UV len = SvUV (length);
		1679
		1680	if (offset < 0)
		1681	offset += svlen;
		1682
		1683	if (offset < 0 || offset > svlen)
		1684	croak ("offset outside of scalar");
		1685
		1686	if (!SvOK (length) || len + offset > svlen)
		1687	len = svlen - offset;
		1688
		1689	{
		1690	dREQ;
		1691
		1692	req->type = EIO_MLOCK;
		1693	req->sv2 = SvREFCNT_inc (data);
		1694	req->ptr2 = (char *)svptr + offset;
		1695	req->size = len;
		1696
		1697	REQ_SEND;
		1698	}
		1699	}
		1700
		1701	void
		1702	aio_mlockall (IV flags, SV *callback = &PL_sv_undef)
		1703	PPCODE:
		1704	{
		1705	dREQ;
		1706
		1707	req->type = EIO_MLOCKALL;
		1708	req->int1 = flags;
		1709
		1710	REQ_SEND;
		1711	}
		1712
		1713	void
		1714	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback = &PL_sv_undef)
		1715	PPCODE:
		1716	{
		1717	int fd = s_fileno_croak (fh, 0);
		1718	dREQ;
		1719
		1720	req->type = EIO_CUSTOM;
		1721	req->sv1 = newSVsv (fh);
		1722	req->int1 = fd;
		1723
		1724	req->feed = fiemap;
		1725	#if HAVE_FIEMAP
		1726	/* keep our fingers crossed that the next two types are 64 bit */
		1727	req->offs = start;
		1728	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1729	req->int2 = flags;
		1730	req->int3 = SvOK (count) ? SvIV (count) : -1;
1058	#endif	1731	#endif
		1732
		1733	REQ_SEND;
		1734	}
		1735
		1736	void
		1737	aio_busy (double delay, SV *callback = &PL_sv_undef)
		1738	PPCODE:
		1739	{
		1740	dREQ;
		1741
		1742	req->type = EIO_BUSY;
		1743	req->nv1 = delay < 0. ? 0. : delay;
		1744
		1745	REQ_SEND;
		1746	}
		1747
		1748	void
		1749	aio_group (SV *callback = &PL_sv_undef)
		1750	PPCODE:
		1751	{
		1752	dREQ;
		1753
		1754	req->type = EIO_GROUP;
		1755
		1756	PUTBACK;
		1757	req_submit (req);
		1758	SPAGAIN;
		1759
		1760	XPUSHs (req_sv (req, aio_grp_stash));
		1761	}
		1762
		1763	void
		1764	aio_nop (SV *callback = &PL_sv_undef)
		1765	ALIAS:
		1766	aio_nop = EIO_NOP
		1767	aio_sync = EIO_SYNC
		1768	PPCODE:
		1769	{
		1770	dREQ;
		1771
		1772	req->type = ix;
		1773
		1774	REQ_SEND;
		1775	}
		1776
		1777	int
		1778	aioreq_pri (int pri = NO_INIT)
		1779	CODE:
		1780	RETVAL = next_pri;
		1781	if (items > 0)
		1782	{
		1783	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1784	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1785	next_pri = pri;
		1786	}
		1787	OUTPUT:
		1788	RETVAL
		1789
		1790	void
		1791	aioreq_nice (int nice = 0)
		1792	CODE:
		1793	nice = next_pri - nice;
		1794	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1795	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1796	next_pri = nice;
1059		1797
1060	void	1798	void
1061	flush ()	1799	flush ()
1062	PROTOTYPE:
1063	CODE:	1800	CODE:
1064	while (nreqs)	1801	while (eio_nreqs ())
1065	{	1802	{
1066	poll_wait ();	1803	poll_wait ();
1067	poll_cb ();	1804	poll_cb ();
1068	}	1805	}
1069		1806
1070	void	1807	int
1071	poll()	1808	poll ()
1072	PROTOTYPE:
1073	CODE:	1809	CODE:
1074	if (nreqs)
1075	{
1076	poll_wait ();	1810	poll_wait ();
1077	poll_cb ();	1811	RETVAL = poll_cb ();
1078	}
1079
1080	int
1081	poll_fileno()
1082	PROTOTYPE:
1083	CODE:
1084	RETVAL = respipe [0];
1085	OUTPUT:	1812	OUTPUT:
1086	RETVAL	1813	RETVAL
1087		1814
1088	int	1815	int
		1816	poll_fileno ()
		1817	CODE:
		1818	RETVAL = s_epipe_fd (&respipe);
		1819	OUTPUT:
		1820	RETVAL
		1821
		1822	int
1089	poll_cb(...)	1823	poll_cb (...)
1090	PROTOTYPE:	1824	PROTOTYPE:
1091	CODE:	1825	CODE:
1092	RETVAL = poll_cb ();	1826	RETVAL = poll_cb ();
1093	OUTPUT:	1827	OUTPUT:
1094	RETVAL	1828	RETVAL
1095		1829
1096	void	1830	void
1097	poll_wait()	1831	poll_wait ()
1098	PROTOTYPE:
1099	CODE:	1832	CODE:
1100	if (nreqs)
1101	poll_wait ();	1833	poll_wait ();
1102		1834
1103	int	1835	int
1104	nreqs()	1836	nreqs ()
1105	PROTOTYPE:
1106	CODE:	1837	CODE:
1107	RETVAL = nreqs;	1838	RETVAL = eio_nreqs ();
1108	OUTPUT:	1839	OUTPUT:
1109	RETVAL	1840	RETVAL
1110		1841
		1842	int
		1843	nready ()
		1844	CODE:
		1845	RETVAL = eio_nready ();
		1846	OUTPUT:
		1847	RETVAL
		1848
		1849	int
		1850	npending ()
		1851	CODE:
		1852	RETVAL = eio_npending ();
		1853	OUTPUT:
		1854	RETVAL
		1855
		1856	int
		1857	nthreads ()
		1858	CODE:
		1859	RETVAL = eio_nthreads ();
		1860	OUTPUT:
		1861	RETVAL
		1862
		1863	int
		1864	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1865	CODE:
		1866	RETVAL = posix_fadvise (fh, offset, length, advice);
		1867	OUTPUT:
		1868	RETVAL
		1869
		1870	IV
		1871	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1872	CODE:
		1873	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1874	OUTPUT:
		1875	RETVAL
		1876
		1877	void
		1878	mmap (SV *scalar, STRLEN length, int prot, int flags, SV *fh = &PL_sv_undef, off_t offset = 0)
		1879	PPCODE:
		1880	sv_unmagic (scalar, MMAP_MAGIC);
		1881	{
		1882	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1883	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1884	if (addr == (void *)-1)
		1885	XSRETURN_NO;
		1886
		1887	sv_force_normal (scalar);
		1888
		1889	/* we store the length in mg_obj, as namlen is I32 :/ */
		1890	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1891	->mg_obj = (SV *)length;
		1892
		1893	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1894
		1895	if (!(prot & PROT_WRITE))
		1896	SvREADONLY_on (scalar);
		1897
		1898	if (SvLEN (scalar))
		1899	Safefree (SvPVX (scalar));
		1900
		1901	SvPVX (scalar) = (char *)addr;
		1902	SvCUR_set (scalar, length);
		1903	SvLEN_set (scalar, 0);
		1904	SvPOK_only (scalar);
		1905
		1906	XSRETURN_YES;
		1907	}
		1908
		1909	void
		1910	munmap (SV *scalar)
		1911	CODE:
		1912	sv_unmagic (scalar, MMAP_MAGIC);
		1913
		1914	int
		1915	madvise (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1916	ALIAS:
		1917	mprotect = 1
		1918	CODE:
		1919	{
		1920	STRLEN svlen;
		1921	void *addr = SvPVbyte (scalar, svlen);
		1922	STRLEN len = SvUV (length);
		1923
		1924	if (offset < 0)
		1925	offset += svlen;
		1926
		1927	if (offset < 0 || offset > svlen)
		1928	croak ("offset outside of scalar");
		1929
		1930	if (!SvOK (length) || len + offset > svlen)
		1931	len = svlen - offset;
		1932
		1933	addr = (void *)(((intptr_t)addr) + offset);
		1934	eio_page_align (&addr, &len);
		1935
		1936	switch (ix)
		1937	{
		1938	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1939	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1940	}
		1941	}
		1942	OUTPUT:
		1943	RETVAL
		1944
		1945	int
		1946	munlock (SV *scalar, STRLEN offset = 0, SV *length = &PL_sv_undef)
		1947	CODE:
		1948	{
		1949	STRLEN svlen;
		1950	void *addr = SvPVbyte (scalar, svlen);
		1951	size_t len = SvUV (length);
		1952
		1953	if (offset < 0)
		1954	offset += svlen;
		1955
		1956	if (offset < 0 || offset > svlen)
		1957	croak ("offset outside of scalar");
		1958
		1959	if (!SvOK (length) || len + offset > svlen)
		1960	len = svlen - offset;
		1961
		1962	addr = (void *)(((intptr_t)addr) + offset);
		1963	eio_page_align (&addr, &len);
		1964	#if _POSIX_MEMLOCK_RANGE
		1965	RETVAL = munlock (addr, len);
		1966	#else
		1967	RETVAL = EIO_ENOSYS ();
		1968	#endif
		1969	}
		1970	OUTPUT:
		1971	RETVAL
		1972
		1973	int
		1974	munlockall ()
		1975	CODE:
		1976	#if _POSIX_MEMLOCK
		1977	munlockall ();
		1978	#else
		1979	RETVAL = EIO_ENOSYS ();
		1980	#endif
		1981	OUTPUT:
		1982	RETVAL
		1983
		1984	int
		1985	splice (aio_rfd rfh, SV *off_in, aio_wfd wfh, SV *off_out, size_t length, unsigned int flags)
		1986	CODE:
		1987	{
		1988	#if HAVE_LINUX_SPLICE
		1989	loff_t off_in_, off_out_;
		1990	RETVAL = splice (
		1991	rfh, SvOK (off_in ) ? (off_in_ = SvVAL64 (off_in )), &off_in_ : 0,
		1992	wfh, SvOK (off_out) ? (off_out_ = SvVAL64 (off_out)), &off_out_ : 0,
		1993	length, flags
		1994	);
		1995	#else
		1996	RETVAL = EIO_ENOSYS ();
		1997	#endif
		1998	}
		1999	OUTPUT:
		2000	RETVAL
		2001
		2002	int
		2003	tee (aio_rfd rfh, aio_wfd wfh, size_t length, unsigned int flags)
		2004	CODE:
		2005	#if HAVE_LINUX_SPLICE
		2006	RETVAL = tee (rfh, wfh, length, flags);
		2007	#else
		2008	RETVAL = EIO_ENOSYS ();
		2009	#endif
		2010	OUTPUT:
		2011	RETVAL
		2012
		2013	int
		2014	pipesize (aio_rfd rfh, int new_size = -1)
		2015	PROTOTYPE: $;$
		2016	CODE:
		2017	#if defined(F_SETPIPE_SZ) && defined(F_GETPIPE_SZ)
		2018	if (new_size >= 0)
		2019	RETVAL = fcntl (rfh, F_SETPIPE_SZ, new_size);
		2020	else
		2021	RETVAL = fcntl (rfh, F_GETPIPE_SZ);
		2022	#else
		2023	errno = ENOSYS;
		2024	RETVAL = -1;
		2025	#endif
		2026	OUTPUT:
		2027	RETVAL
		2028
		2029	void
		2030	pipe2 (int flags = 0)
		2031	PROTOTYPE: ;$
		2032	PPCODE:
		2033	{
		2034	int fd[2];
		2035	int res;
		2036
		2037	if (flags)
		2038	#if HAVE_PIPE2
		2039	res = pipe2 (fd, flags);
		2040	#else
		2041	res = (errno = ENOSYS, -1);
		2042	#endif
		2043	else
		2044	res = pipe (fd);
		2045
		2046	if (!res)
		2047	{
		2048	EXTEND (SP, 2);
		2049	PUSHs (newmortalFH (fd[0], O_RDONLY));
		2050	PUSHs (newmortalFH (fd[1], O_WRONLY));
		2051	}
		2052	}
		2053
		2054	void _on_next_submit (SV *cb)
		2055	CODE:
		2056	SvREFCNT_dec (on_next_submit);
		2057	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		2058
		2059	PROTOTYPES: DISABLE
		2060
		2061	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		2062
		2063	BOOT:
		2064	{
		2065	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		2066	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		2067	}
		2068
		2069	void
		2070	DESTROY (SV *self)
		2071	CODE:
		2072	{
		2073	aio_wd wd = SvAIO_WD (self);
		2074	#if HAVE_AT
		2075	{
		2076	SV *callback = &PL_sv_undef;
		2077	dREQ; /* clobbers next_pri :/ */
		2078	next_pri = req->pri; /* restore next_pri */
		2079	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		2080	req->type = EIO_WD_CLOSE;
		2081	req->wd = wd;
		2082	REQ_SEND;
		2083	}
		2084	#else
		2085	eio_wd_close_sync (wd);
		2086	#endif
		2087	}
		2088
		2089	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		2090
		2091	void
		2092	cancel (aio_req_ornot req)
		2093	CODE:
		2094	eio_cancel (req);
		2095
		2096	void
		2097	cb (aio_req_ornot req, SV *callback = NO_INIT)
		2098	PPCODE:
		2099	{
		2100	if (GIMME_V != G_VOID)
		2101	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		2102
		2103	if (items > 1)
		2104	{
		2105	SV *cb_cv = get_cb (callback);
		2106
		2107	SvREFCNT_dec (req->callback);
		2108	req->callback = SvREFCNT_inc (cb_cv);
		2109	}
		2110	}
		2111
		2112	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		2113
		2114	void
		2115	add (aio_req grp, ...)
		2116	PPCODE:
		2117	{
		2118	int i;
		2119
		2120	if (grp->int1 == 2)
		2121	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		2122
		2123	for (i = 1; i < items; ++i )
		2124	{
		2125	aio_req req;
		2126
		2127	if (GIMME_V != G_VOID)
		2128	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		2129
		2130	req = SvAIO_REQ (ST (i));
		2131
		2132	if (req)
		2133	eio_grp_add (grp, req);
		2134	}
		2135	}
		2136
		2137	void
		2138	cancel_subs (aio_req_ornot req)
		2139	CODE:
		2140	req_cancel_subs (req);
		2141
		2142	void
		2143	result (aio_req grp, ...)
		2144	CODE:
		2145	{
		2146	int i;
		2147	AV *av;
		2148
		2149	grp->errorno = errno;
		2150
		2151	av = newAV ();
		2152	av_extend (av, items - 1);
		2153
		2154	for (i = 1; i < items; ++i )
		2155	av_push (av, newSVsv (ST (i)));
		2156
		2157	SvREFCNT_dec (grp->sv1);
		2158	grp->sv1 = (SV *)av;
		2159	}
		2160
		2161	void
		2162	errno (aio_req grp, int errorno = errno)
		2163	CODE:
		2164	grp->errorno = errorno;
		2165
		2166	void
		2167	limit (aio_req grp, int limit)
		2168	CODE:
		2169	eio_grp_limit (grp, limit);
		2170
		2171	void
		2172	feed (aio_req grp, SV *callback = &PL_sv_undef)
		2173	CODE:
		2174	{
		2175	SvREFCNT_dec (grp->sv2);
		2176	grp->sv2 = newSVsv (callback);
		2177	grp->feed = aio_grp_feed;
		2178
		2179	if (grp->int2 <= 0)
		2180	grp->int2 = 2;
		2181
		2182	eio_grp_limit (grp, grp->int2);
		2183	}
		2184

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