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Comparing IO-AIO/AIO.xs (file contents):
Revision 1.37 by root, Tue Aug 23 12:37:19 2005 UTC vs.
Revision 1.211 by root, Sat Apr 7 00:50:33 2012 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 <sys/types.h>	14	#include <sys/types.h>
14	#include <sys/stat.h>	15	#include <sys/stat.h>
15	#include <limits.h>	16	#include <limits.h>
16	#include <unistd.h>
17	#include <fcntl.h>	17	#include <fcntl.h>
18	#include <signal.h>
19	#include <sched.h>	18	#include <sched.h>
20		19
21	#if HAVE_SENDFILE	20	#if _POSIX_MEMLOCK || _POSIX_MEMLOCK_RANGE || _POSIX_MAPPED_FILES
		21	# include <sys/mman.h>
		22	#endif
		23
22	# if __linux	24	#if __linux__
		25	# include <linux/fs.h>
		26	# ifdef FS_IOC_FIEMAP
		27	# include <linux/fiemap.h>
		28	# define HAVE_FIEMAP 1
		29	# endif
		30	#endif
		31
		32	/* perl namespace pollution */
		33	#undef VERSION
		34
		35	/* perl stupidly overrides readdir and maybe others */
		36	/* with thread-unsafe versions, imagine that :( */
		37	#undef readdir
		38	#undef opendir
		39	#undef closedir
		40
		41	#ifdef _WIN32
		42
		43	// perl overrides all those nice libc functions
		44
		45	#undef malloc
		46	#undef free
		47	#undef open
		48	#undef read
		49	#undef write
		50	#undef send
		51	#undef recv
		52	#undef stat
		53	#undef lstat
		54	#undef fstat
		55	#undef truncate
		56	#undef ftruncate
		57	#undef open
		58	#undef link
		59	#undef close
		60	#undef unlink
		61	#undef mkdir
		62	#undef rmdir
		63	#undef rename
		64	#undef lseek
		65	#undef opendir
		66	#undef readdir
		67	#undef closedir
		68	#undef chmod
		69	#undef fchmod
		70	#undef dup
		71	#undef dup2
		72	#undef abort
		73	#undef pipe
		74
		75	#define EIO_STRUCT_STAT struct _stati64
		76	#define EIO_STRUCT_STATI64
		77
		78	#else
		79
		80	#include <sys/time.h>
23	# include <sys/sendfile.h>	81	#include <sys/select.h>
24	# elif __freebsd	82	#include <unistd.h>
25	# include <sys/socket.h>	83	#include <utime.h>
26	# include <sys/uio.h>	84	#include <signal.h>
27	# elif __hpux	85
28	# include <sys/socket.h>	86	#define EIO_STRUCT_STAT Stat_t
29	# elif __solaris /* not yet */	87
30	# include <sys/sendfile.h>	88	#endif
		89
		90	/*****************************************************************************/
		91
		92	#if __GNUC__ >= 3
		93	# define expect(expr,value) __builtin_expect ((expr),(value))
		94	#else
		95	# define expect(expr,value) (expr)
		96	#endif
		97
		98	#define expect_false(expr) expect ((expr) != 0, 0)
		99	#define expect_true(expr) expect ((expr) != 0, 1)
		100
		101	/*****************************************************************************/
		102
		103	typedef SV SV8; /* byte-sv, used for argument-checking */
		104	typedef int aio_rfd; /* read file desriptor */
		105	typedef int aio_wfd; /* write file descriptor */
		106
		107	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		108
		109	#define EIO_REQ_MEMBERS \
		110	SV *callback; \
		111	SV *sv1, *sv2; \
		112	SV *sv3, *sv4; \
		113	STRLEN stroffset; \
		114	SV *self;
		115
		116	#define EIO_NO_WRAPPERS 1
		117
		118	#include "libeio/config.h"
		119	#include "libeio/eio.h"
		120
		121	static int req_invoke (eio_req *req);
		122	#define EIO_FINISH(req) req_invoke (req)
		123	static void req_destroy (eio_req *grp);
		124	#define EIO_DESTROY(req) req_destroy (req)
		125
		126	#include "libeio/eio.c"
		127
		128	#if !HAVE_POSIX_FADVISE
		129	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		130	#endif
		131
		132	#if !HAVE_POSIX_MADVISE
		133	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		134	#endif
		135
		136	#ifndef MAP_ANONYMOUS
		137	# ifdef MAP_ANON
		138	# define MAP_ANONYMOUS MAP_ANON
31	# else	139	# else
32	# error sendfile support requested but not available	140	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
33	# endif	141	# endif
34	#endif	142	#endif
35		143
36	#if __ia64	144	/* defines all sorts of constants to 0 unless they are already defined */
37	# define STACKSIZE 65536	145	#include "def0.h"
38	#else
39	# define STACKSIZE 8192
40	#endif
41		146
42	enum {	147	#ifndef makedev
43	REQ_QUIT,	148	# define makedev(maj,min) (((maj) << 8) | (min))
44	REQ_OPEN, REQ_CLOSE,	149	#endif
45	REQ_READ, REQ_WRITE, REQ_READAHEAD,	150	#ifndef major
46	REQ_SENDFILE,	151	# define major(dev) ((dev) >> 8)
47	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	152	#endif
48	REQ_FSYNC, REQ_FDATASYNC,	153	#ifndef minor
49	REQ_UNLINK, REQ_RMDIR,	154	# define minor(dev) ((dev) & 0xff)
50	REQ_READDIR,	155	#endif
51	REQ_SYMLINK,
52	};
53		156
54	typedef struct aio_cb {	157	#ifndef PAGESIZE
55	struct aio_cb *volatile next;	158	# define PAGESIZE sysconf (_SC_PAGESIZE)
		159	#endif
56		160
57	int type;	161	/*****************************************************************************/
58
59	/* should receive a cleanup, with unions */
60	int fd, fd2;
61	off_t offset;
62	size_t length;
63	ssize_t result;
64	mode_t mode; /* open */
65	int errorno;
66	SV *data, *callback;
67	SV *fh, *fh2;
68	void *dataptr, *data2ptr;
69	STRLEN dataoffset;
70
71	Stat_t *statdata;
72	} aio_cb;
73
74	typedef aio_cb *aio_req;
75
76	static int started, wanted;
77	static volatile int nreqs;
78	static int max_outstanding = 1<<30;
79	static int respipe [2];
80
81	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;
82	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
83	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
84
85	static volatile aio_req reqs, reqe; /* queue start, queue end */
86	static volatile aio_req ress, rese; /* queue start, queue end */
87
88	static void free_req (aio_req req)
89	{
90	if (req->data)
91	SvREFCNT_dec (req->data);
92
93	if (req->fh)
94	SvREFCNT_dec (req->fh);
95
96	if (req->fh2)
97	SvREFCNT_dec (req->fh2);
98
99	if (req->statdata)
100	Safefree (req->statdata);
101
102	if (req->callback)
103	SvREFCNT_dec (req->callback);
104
105	if (req->type == REQ_READDIR && req->result >= 0)
106	free (req->data2ptr);
107
108	Safefree (req);
109	}
110		162
111	static void	163	static void
112	poll_wait ()	164	fiemap (eio_req *req)
113	{	165	{
114	if (nreqs && !ress)	166	req->result = -1;
115	{
116	fd_set rfd;
117	FD_ZERO(&rfd);
118	FD_SET(respipe [0], &rfd);
119		167
120	select (respipe [0] + 1, &rfd, 0, 0, 0);	168	#if HAVE_FIEMAP
121	}
122	}
123
124	static int
125	poll_cb ()
126	{
127	dSP;
128	int count = 0;	169	int count = req->int3;
129	int do_croak = 0;	170
130	aio_req req;	171	/* heuristic: first try with 64 extents if we don't know how many, */
		172	/* as most files have (hopefully) fewer than this many extents */
		173	/* in fact, most should have <= 2, so maybe the 72 below is probably overkill */
		174	if (count < 0)
		175	count = 72; /* for what it's worth, 72 extents fit nicely into 4kb */
131		176
132	for (;;)	177	for (;;)
133	{	178	{
134	pthread_mutex_lock (&reslock);	179	struct fiemap *fiemap = malloc (sizeof (*fiemap) + sizeof (struct fiemap_extent) * count);
135	req = ress;	180	errno = ENOMEM;
136
137	if (req)	181	if (!fiemap)
		182	return;
		183
		184	req->ptr1 = fiemap;
		185	req->flags |= EIO_FLAG_PTR1_FREE;
		186
		187	fiemap->fm_start = req->offs;
		188	fiemap->fm_length = req->size;
		189	fiemap->fm_flags = req->int2;
		190	fiemap->fm_extent_count = count;
		191
		192	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		193	return;
		194
		195	if (req->int3 >= 0)
		196	break; /* when not autosizing we are done */
		197
		198	if (fiemap->fm_extents [fiemap->fm_mapped_extents - 1].fe_flags & FIEMAP_EXTENT_LAST)
		199	break; /* autosizing successful, we are done */
		200
		201	fiemap->fm_flags = req->int2;
		202	fiemap->fm_extent_count = 0;
		203
		204	if (ioctl (req->int1, FS_IOC_FIEMAP, fiemap))
		205	return;
		206
		207	count = fiemap->fm_mapped_extents;
		208
		209	free (fiemap);
		210	}
		211
		212	req->result = 0;
		213
		214	#else
		215	errno = ENOSYS;
		216	#endif
		217	}
		218
		219	/*****************************************************************************/
		220
		221	enum {
		222	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		223	};
		224
		225	typedef eio_req *aio_req;
		226	typedef eio_req *aio_req_ornot;
		227	typedef eio_wd aio_wd;
		228
		229	static SV *on_next_submit;
		230	static int next_pri = EIO_PRI_DEFAULT;
		231	static int max_outstanding;
		232
		233	static s_epipe respipe;
		234
		235	static void req_destroy (aio_req req);
		236	static void req_cancel (aio_req req);
		237
		238	static void
		239	want_poll (void)
		240	{
		241	/* write a dummy byte to the pipe so fh becomes ready */
		242	s_epipe_signal (&respipe);
		243	}
		244
		245	static void
		246	done_poll (void)
		247	{
		248	/* read any signals sent by the worker threads */
		249	s_epipe_drain (&respipe);
		250	}
		251
		252	/* must be called at most once */
		253	static SV *
		254	req_sv (aio_req req, HV *stash)
		255	{
		256	if (!req->self)
		257	{
		258	req->self = (SV *)newHV ();
		259	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
		260	}
		261
		262	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		263	}
		264
		265	static SV *
		266	newSVaio_wd (aio_wd wd)
		267	{
		268	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		269	}
		270
		271	static aio_req
		272	SvAIO_REQ (SV *sv)
		273	{
		274	MAGIC *mg;
		275
		276	if (!SvROK (sv)
		277	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		278	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		279	&& SvSTASH (SvRV (sv)) != aio_req_stash
		280	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		281	croak ("object of class IO::AIO::REQ expected");
		282
		283	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		284
		285	return mg ? (aio_req)mg->mg_ptr : 0;
		286	}
		287
		288	static aio_wd
		289	SvAIO_WD (SV *sv)
		290	{
		291	if (!SvROK (sv)
		292	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		293	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		294	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		295
		296	return (aio_wd)(long)SvIVX (SvRV (sv));
		297	}
		298
		299	static void
		300	aio_grp_feed (aio_req grp)
		301	{
		302	if (grp->sv2 && SvOK (grp->sv2))
		303	{
		304	dSP;
		305
		306	ENTER;
		307	SAVETMPS;
		308	PUSHMARK (SP);
		309	XPUSHs (req_sv (grp, aio_grp_stash));
		310	PUTBACK;
		311	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		312	SPAGAIN;
		313	FREETMPS;
		314	LEAVE;
		315	}
		316	}
		317
		318	static void
		319	req_submit (eio_req *req)
		320	{
		321	eio_submit (req);
		322
		323	if (expect_false (on_next_submit))
		324	{
		325	dSP;
		326	SV *cb = sv_2mortal (on_next_submit);
		327
		328	on_next_submit = 0;
		329
		330	PUSHMARK (SP);
		331	PUTBACK;
		332	call_sv (cb, G_DISCARD | G_EVAL);
		333	}
		334	}
		335
		336	static int
		337	req_invoke (eio_req *req)
		338	{
		339	if (req->flags & FLAG_SV2_RO_OFF)
		340	SvREADONLY_off (req->sv2);
		341
		342	if (!EIO_CANCELLED (req) && req->callback)
		343	{
		344	dSP;
		345	static SV *sv_result_cache; /* caches the result integer SV */
		346	SV *sv_result;
		347
		348	ENTER;
		349	SAVETMPS;
		350	PUSHMARK (SP);
		351	EXTEND (SP, 1);
		352
		353	/* do not recreate the result IV from scratch each time */
		354	if (expect_true (sv_result_cache))
138	{	355	{
139	ress = req->next;	356	sv_result = sv_result_cache; sv_result_cache = 0;
140		357	SvIV_set (sv_result, req->result);
141	if (!ress)	358	SvIOK_only (sv_result);
142	{
143	/* read any signals sent by the worker threads */
144	char buf [32];
145	while (read (respipe [0], buf, 32) == 32)
146	;
147
148	rese = 0;
149	}
150	}
151
152	pthread_mutex_unlock (&reslock);
153
154	if (!req)
155	break;
156
157	nreqs--;
158
159	if (req->type == REQ_QUIT)
160	started--;
161	else
162	{
163	int errorno = errno;
164	errno = req->errorno;
165
166	if (req->type == REQ_READ)
167	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
168
169	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
170	SvREADONLY_off (req->data);
171
172	if (req->statdata)
173	{
174	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
175	PL_laststatval = req->result;
176	PL_statcache = *(req->statdata);
177	}
178
179	ENTER;
180	PUSHMARK (SP);
181
182	if (req->type == REQ_READDIR)
183	{
184	SV *rv = &PL_sv_undef;
185
186	if (req->result >= 0)
187	{
188	char *buf = req->data2ptr;
189	AV *av = newAV ();
190
191	while (req->result)
192	{
193	SV *sv = newSVpv (buf, 0);
194
195	av_push (av, sv);
196	buf += SvCUR (sv) + 1;
197	req->result--;
198	}
199
200	rv = sv_2mortal (newRV_noinc ((SV *)av));
201	}
202
203	XPUSHs (rv);
204	}
205	else
206	{
207	XPUSHs (sv_2mortal (newSViv (req->result)));
208
209	if (req->type == REQ_OPEN)
210	{
211	/* convert fd to fh */
212	SV *fh;
213
214	PUTBACK;
215	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
216	SPAGAIN;
217
218	fh = SvREFCNT_inc (POPs);
219
220	PUSHMARK (SP);
221	XPUSHs (sv_2mortal (fh));
222	}
223	}
224
225	if (SvOK (req->callback))
226	{
227	PUTBACK;
228	call_sv (req->callback, G_VOID | G_EVAL);
229	SPAGAIN;
230
231	if (SvTRUE (ERRSV))
232	{
233	free_req (req);
234	croak (0);
235	}
236	}
237
238	LEAVE;
239
240	errno = errorno;
241	count++;
242	}
243
244	free_req (req);
245	}
246
247	return count;
248	}
249
250	static void *aio_proc(void *arg);
251
252	static void
253	start_thread (void)
254	{
255	sigset_t fullsigset, oldsigset;
256	pthread_t tid;
257	pthread_attr_t attr;
258
259	pthread_attr_init (&attr);
260	pthread_attr_setstacksize (&attr, STACKSIZE);
261	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
262
263	sigfillset (&fullsigset);
264	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
265
266	if (pthread_create (&tid, &attr, aio_proc, 0) == 0)
267	started++;
268
269	sigprocmask (SIG_SETMASK, &oldsigset, 0);
270	}
271
272	static void
273	send_req (aio_req req)
274	{
275	while (started < wanted && nreqs >= started)
276	start_thread ();
277
278	nreqs++;
279
280	pthread_mutex_lock (&reqlock);
281
282	req->next = 0;
283
284	if (reqe)
285	{
286	reqe->next = req;
287	reqe = req;
288	}
289	else
290	reqe = reqs = req;
291
292	pthread_cond_signal (&reqwait);
293	pthread_mutex_unlock (&reqlock);
294
295	if (nreqs > max_outstanding)
296	for (;;)
297	{
298	poll_cb ();
299
300	if (nreqs <= max_outstanding)
301	break;
302
303	poll_wait ();
304	}
305	}
306
307	static void
308	end_thread (void)
309	{
310	aio_req req;
311	Newz (0, req, 1, aio_cb);
312	req->type = REQ_QUIT;
313
314	send_req (req);
315	}
316
317	static void min_parallel (int nthreads)
318	{
319	if (wanted < nthreads)
320	wanted = nthreads;
321	}
322
323	static void max_parallel (int nthreads)
324	{
325	int cur = started;
326
327	if (wanted > nthreads)
328	wanted = nthreads;
329
330	while (cur > wanted)
331	{
332	end_thread ();
333	cur--;
334	}
335
336	while (started > wanted)
337	{
338	poll_wait ();
339	poll_cb ();
340	}
341	}
342
343	static void create_pipe ()
344	{
345	if (pipe (respipe))
346	croak ("unable to initialize result pipe");
347
348	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
349	croak ("cannot set result pipe to nonblocking mode");
350
351	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
352	croak ("cannot set result pipe to nonblocking mode");
353	}
354
355	/*****************************************************************************/
356	/* work around various missing functions */
357
358	#if !HAVE_PREADWRITE
359	# define pread aio_pread
360	# define pwrite aio_pwrite
361
362	/*
363	* make our pread/pwrite safe against themselves, but not against
364	* normal read/write by using a mutex. slows down execution a lot,
365	* but that's your problem, not mine.
366	*/
367	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;
368
369	static ssize_t
370	pread (int fd, void *buf, size_t count, off_t offset)
371	{
372	ssize_t res;
373	off_t ooffset;
374
375	pthread_mutex_lock (&preadwritelock);
376	ooffset = lseek (fd, 0, SEEK_CUR);
377	lseek (fd, offset, SEEK_SET);
378	res = read (fd, buf, count);
379	lseek (fd, ooffset, SEEK_SET);
380	pthread_mutex_unlock (&preadwritelock);
381
382	return res;
383	}
384
385	static ssize_t
386	pwrite (int fd, void *buf, size_t count, off_t offset)
387	{
388	ssize_t res;
389	off_t ooffset;
390
391	pthread_mutex_lock (&preadwritelock);
392	ooffset = lseek (fd, 0, SEEK_CUR);
393	lseek (fd, offset, SEEK_SET);
394	res = write (fd, buf, count);
395	lseek (fd, offset, SEEK_SET);
396	pthread_mutex_unlock (&preadwritelock);
397
398	return res;
399	}
400	#endif
401
402	#if !HAVE_FDATASYNC
403	# define fdatasync fsync
404	#endif
405
406	#if !HAVE_READAHEAD
407	# define readahead aio_readahead
408
409	static ssize_t
410	readahead (int fd, off_t offset, size_t count)
411	{
412	char readahead_buf[4096];
413
414	while (count > 0)
415	{
416	size_t len = count < sizeof (readahead_buf) ? count : sizeof (readahead_buf);
417
418	pread (fd, readahead_buf, len, offset);
419	offset += len;
420	count -= len;
421	}
422
423	errno = 0;
424	}
425	#endif
426
427	#if !HAVE_READDIR_R
428	# define readdir_r aio_readdir_r
429
430	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;
431
432	static int
433	readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)
434	{
435	struct dirent *e;
436	int errorno;
437
438	pthread_mutex_lock (&readdirlock);
439
440	e = readdir (dirp);
441	errorno = errno;
442
443	if (e)
444	{
445	*res = ent;
446	strcpy (ent->d_name, e->d_name);
447	}
448	else
449	*res = 0;
450
451	pthread_mutex_unlock (&readdirlock);
452
453	errno = errorno;
454	return e ? 0 : -1;
455	}
456	#endif
457
458	/* sendfile always needs emulation */
459	static ssize_t
460	sendfile_ (int ofd, int ifd, off_t offset, size_t count)
461	{
462	ssize_t res;
463
464	if (!count)
465	return 0;
466
467	#if HAVE_SENDFILE
468	# if __linux
469	res = sendfile (ofd, ifd, &offset, count);
470
471	# elif __freebsd
472	/*
473	* Of course, the freebsd sendfile is a dire hack with no thoughts
474	* wasted on making it similar to other I/O functions.
475	*/
476	{
477	off_t sbytes;
478	res = sendfile (ifd, ofd, offset, count, 0, &sbytes, 0);
479
480	if (res < 0 && sbytes)
481	/* maybe only on EAGAIN only: as usual, the manpage leaves you guessing */
482	res = sbytes;
483	}
484
485	# elif __hpux
486	res = sendfile (ofd, ifd, offset, count, 0, 0);
487
488	# elif __solaris
489	{
490	struct sendfilevec vec;
491	size_t sbytes;
492
493	vec.sfv_fd = ifd;
494	vec.sfv_flag = 0;
495	vec.sfv_off = offset;
496	vec.sfv_len = count;
497
498	res = sendfilev (ofd, &vec, 1, &sbytes);
499
500	if (res < 0 && sbytes)
501	res = sbytes;
502	}
503
504	# else
505	res = -1;
506	errno = ENOSYS;
507	# endif
508	#endif
509
510	if (res < 0
511	&& (errno == ENOSYS || errno == EINVAL || errno == ENOTSOCK
512	#if __solaris
513	|| errno == EAFNOSUPPORT || errno == EPROTOTYPE
514	#endif
515	)
516	)
517	{
518	/* emulate sendfile. this is a major pain in the ass */
519	char buf[4096];
520	res = 0;
521
522	for (;;)
523	{
524	ssize_t cnt;
525
526	cnt = pread (ifd, buf, 4096, offset);
527
528	if (cnt <= 0)
529	{
530	if (cnt && !res) res = -1;
531	break;
532	}
533
534	cnt = write (ofd, buf, cnt);
535
536	if (cnt <= 0)
537	{
538	if (cnt && !res) res = -1;
539	break;
540	}
541
542	offset += cnt;
543	res += cnt;
544	}
545	}
546
547	return res;
548	}
549
550	/* read a full directory */
551	static int
552	scandir_ (const char *path, void **namesp)
553	{
554	DIR *dirp = opendir (path);
555	union
556	{
557	struct dirent d;
558	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
559	} u;
560	struct dirent *entp;
561	char *name, *names;
562	int memlen = 4096;
563	int memofs = 0;
564	int res = 0;
565	int errorno;
566
567	if (!dirp)
568	return -1;
569
570	names = malloc (memlen);
571
572	for (;;)
573	{
574	errno = 0, readdir_r (dirp, &u.d, &entp);
575
576	if (!entp)
577	break;
578
579	name = entp->d_name;
580
581	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
582	{
583	int len = strlen (name) + 1;
584
585	res++;
586
587	while (memofs + len > memlen)
588	{
589	memlen *= 2;
590	names = realloc (names, memlen);
591	if (!names)
592	break;
593	}
594
595	memcpy (names + memofs, name, len);
596	memofs += len;
597	}
598	}
599
600	errorno = errno;
601	closedir (dirp);
602
603	if (errorno)
604	{
605	free (names);
606	errno = errorno;
607	res = -1;
608	}
609
610	*namesp = (void *)names;
611	return res;
612	}
613
614	/*****************************************************************************/
615
616	static void *
617	aio_proc (void *thr_arg)
618	{
619	aio_req req;
620	int type;
621
622	do
623	{
624	pthread_mutex_lock (&reqlock);
625
626	for (;;)
627	{
628	req = reqs;
629
630	if (reqs)
631	{
632	reqs = reqs->next;
633	if (!reqs) reqe = 0;
634	}
635
636	if (req)
637	break;
638
639	pthread_cond_wait (&reqwait, &reqlock);
640	}
641
642	pthread_mutex_unlock (&reqlock);
643
644	errno = 0; /* strictly unnecessary */
645
646	type = req->type;
647
648	switch (type)
649	{
650	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;
651	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;
652
653	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;
654	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length); break;
655
656	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;
657	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;
658	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;
659
660	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;
661	case REQ_CLOSE: req->result = close (req->fd); break;
662	case REQ_UNLINK: req->result = unlink (req->dataptr); break;
663	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;
664	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;
665
666	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;
667	case REQ_FSYNC: req->result = fsync (req->fd); break;
668	case REQ_READDIR: req->result = scandir_ (req->dataptr, &req->data2ptr); break;
669
670	case REQ_QUIT:
671	break;
672
673	default:
674	req->result = ENOSYS;
675	break;
676	}
677
678	req->errorno = errno;
679
680	pthread_mutex_lock (&reslock);
681
682	req->next = 0;
683
684	if (rese)
685	{
686	rese->next = req;
687	rese = req;
688	}	359	}
689	else	360	else
690	{	361	{
691	rese = ress = req;	362	sv_result = newSViv (req->result);
692		363	SvREADONLY_on (sv_result);
693	/* write a dummy byte to the pipe so fh becomes ready */
694	write (respipe [1], &respipe, 1);
695	}	364	}
696		365
697	pthread_mutex_unlock (&reslock);	366	switch (req->type)
		367	{
		368	case EIO_WD_OPEN:
		369	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		370	break;
		371
		372	case EIO_READDIR:
		373	{
		374	SV *rv = &PL_sv_undef;
		375
		376	if (req->result >= 0)
		377	{
		378	int i;
		379	char *names = (char *)req->ptr2;
		380	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		381	AV *av = newAV ();
		382
		383	av_extend (av, req->result - 1);
		384
		385	for (i = 0; i < req->result; ++i)
		386	{
		387	if (req->int1 & EIO_READDIR_DENTS)
		388	{
		389	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		390
		391	if (req->int1 & EIO_READDIR_CUSTOM2)
		392	{
		393	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		394	AV *avent = newAV ();
		395
		396	av_extend (avent, 2);
		397
		398	if (!sv_type [ent->type])
		399	{
		400	sv_type [ent->type] = newSViv (ent->type);
		401	SvREADONLY_on (sv_type [ent->type]);
		402	}
		403
		404	av_store (avent, 0, namesv);
		405	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		406	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		407
		408	av_store (av, i, newRV_noinc ((SV *)avent));
		409	}
		410	else
		411	av_store (av, i, namesv);
		412
		413	++ent;
		414	}
		415	else
		416	{
		417	SV *name = newSVpv (names, 0);
		418	av_store (av, i, name);
		419	names += SvCUR (name) + 1;
		420	}
		421	}
		422
		423	rv = sv_2mortal (newRV_noinc ((SV *)av));
		424	}
		425
		426	PUSHs (rv);
		427
		428	if (req->int1 & EIO_READDIR_CUSTOM1)
		429	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		430	}
		431	break;
		432
		433	case EIO_OPEN:
		434	{
		435	/* convert fd to fh */
		436	SV *fh = &PL_sv_undef;
		437
		438	if (req->result >= 0)
		439	{
		440	GV *gv = (GV *)sv_newmortal ();
		441	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		442	char sym [64];
		443	int symlen;
		444
		445	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		446	gv_init (gv, aio_stash, sym, symlen, 0);
		447
		448	symlen = snprintf (
		449	sym,
		450	sizeof (sym),
		451	"%s&=%d",
		452	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		453	(int)req->result
		454	);
		455
		456	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		457	fh = (SV *)gv;
		458	}
		459
		460	PUSHs (fh);
		461	}
		462	break;
		463
		464	case EIO_STATVFS:
		465	case EIO_FSTATVFS:
		466	{
		467	SV *rv = &PL_sv_undef;
		468
		469	#ifndef _WIN32
		470	if (req->result >= 0)
		471	{
		472	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		473	HV *hv = newHV ();
		474
		475	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		476
		477	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		478	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		479	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		480	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		481	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		482	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		483	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		484	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		485	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		486	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		487	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		488	}
		489	#endif
		490
		491	PUSHs (rv);
		492	}
		493
		494	break;
		495
		496	case EIO_GROUP:
		497	req->int1 = 2; /* mark group as finished */
		498
		499	if (req->sv1)
		500	{
		501	int i;
		502	AV *av = (AV *)req->sv1;
		503
		504	EXTEND (SP, AvFILL (av) + 1);
		505	for (i = 0; i <= AvFILL (av); ++i)
		506	PUSHs (*av_fetch (av, i, 0));
		507	}
		508	break;
		509
		510	case EIO_NOP:
		511	case EIO_BUSY:
		512	break;
		513
		514	case EIO_READLINK:
		515	case EIO_REALPATH:
		516	if (req->result > 0)
		517	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		518	break;
		519
		520	case EIO_STAT:
		521	case EIO_LSTAT:
		522	case EIO_FSTAT:
		523	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		524
		525	if (!(PL_laststatval = req->result))
		526	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		527	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		528
		529	PUSHs (sv_result);
		530	break;
		531
		532	case EIO_SEEK:
		533	PUSHs (req->result ? sv_result : sv_2mortal (newSVval64 (req->offs)));
		534	break;
		535
		536	case EIO_READ:
		537	{
		538	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		539	*SvEND (req->sv2) = 0;
		540	SvPOK_only (req->sv2);
		541	SvSETMAGIC (req->sv2);
		542	PUSHs (sv_result);
		543	}
		544	break;
		545
		546	case EIO_CUSTOM:
		547	if (req->feed == fiemap)
		548	{
		549	#if HAVE_FIEMAP
		550	if (!req->result)
		551	{
		552	struct fiemap *fiemap = (struct fiemap *)req->ptr1;
		553
		554	if (fiemap->fm_extent_count)
		555	{
		556	AV *av = newAV ();
		557	int i;
		558
		559	while (fiemap->fm_mapped_extents)
		560	{
		561	struct fiemap_extent *extent = &fiemap->fm_extents [--fiemap->fm_mapped_extents];
		562	AV *ext_av = newAV ();
		563
		564	av_store (ext_av, 3, newSVuv (extent->fe_flags));
		565	av_store (ext_av, 2, newSVval64 (extent->fe_length));
		566	av_store (ext_av, 1, newSVval64 (extent->fe_physical));
		567	av_store (ext_av, 0, newSVval64 (extent->fe_logical));
		568
		569	av_store (av, fiemap->fm_mapped_extents, newRV_noinc ((SV *)ext_av));
		570	}
		571
		572	PUSHs (sv_2mortal (newRV_noinc ((SV *)av)));
		573	}
		574	else
		575	{
		576	SvIV_set (sv_result, fiemap->fm_mapped_extents);
		577	PUSHs (sv_result);
		578	}
		579	}
		580	#endif
		581	}
		582	else
		583	PUSHs (sv_result);
		584	break;
		585
		586	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		587	if (req->result > 0)
		588	SvIV_set (sv_result, 0);
		589	/* FALLTHROUGH */
		590
		591	default:
		592	PUSHs (sv_result);
		593	break;
		594	}
		595
		596	errno = req->errorno;
		597
		598	PUTBACK;
		599	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		600	SPAGAIN;
		601
		602	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		603	SvREFCNT_dec (sv_result);
		604	else
		605	sv_result_cache = sv_result;
		606
		607	FREETMPS;
		608	LEAVE;
		609
		610	PUTBACK;
698	}	611	}
699	while (type != REQ_QUIT);	612
		613	return !!SvTRUE (ERRSV);
		614	}
		615
		616	static void
		617	req_destroy (aio_req req)
		618	{
		619	if (req->self)
		620	{
		621	sv_unmagic (req->self, PERL_MAGIC_ext);
		622	SvREFCNT_dec (req->self);
		623	}
		624
		625	SvREFCNT_dec (req->sv1);
		626	SvREFCNT_dec (req->sv2);
		627	SvREFCNT_dec (req->sv3);
		628	SvREFCNT_dec (req->sv4);
		629	SvREFCNT_dec (req->callback);
		630
		631	free (req);
		632	}
		633
		634	static void
		635	req_cancel_subs (aio_req grp)
		636	{
		637	if (grp->type != EIO_GROUP)
		638	return;
		639
		640	SvREFCNT_dec (grp->sv2);
		641	grp->sv2 = 0;
		642
		643	eio_grp_cancel (grp);
		644	}
		645
		646	static void ecb_cold
		647	create_respipe (void)
		648	{
		649	if (s_epipe_renew (&respipe))
		650	croak ("IO::AIO: unable to initialize result pipe");
		651	}
		652
		653	static void
		654	poll_wait (void)
		655	{
		656	while (eio_nreqs ())
		657	{
		658	int size;
		659
		660	X_LOCK (reslock);
		661	size = res_queue.size;
		662	X_UNLOCK (reslock);
		663
		664	if (size)
		665	return;
		666
		667	etp_maybe_start_thread ();
		668
		669	s_epipe_wait (&respipe);
		670	}
		671	}
		672
		673	static int
		674	poll_cb (void)
		675	{
		676	for (;;)
		677	{
		678	int res = eio_poll ();
		679
		680	if (res > 0)
		681	croak (0);
		682
		683	if (!max_outstanding || max_outstanding > eio_nreqs ())
		684	return res;
		685
		686	poll_wait ();
		687	}
		688	}
		689
		690	static void ecb_cold
		691	reinit (void)
		692	{
		693	create_respipe ();
		694
		695	if (eio_init (want_poll, done_poll) < 0)
		696	croak ("IO::AIO: unable to initialise eio library");
		697	}
		698
		699	/*****************************************************************************/
		700
		701	#if !_POSIX_MAPPED_FILES
		702	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		703	# define munmap(addr,length) (errno = ENOSYS, -1)
		704	#endif
		705
		706	#if !_POSIX_MEMORY_PROTECTION
		707	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		708	# define PROT_NONE 0
		709	# define PROT_WRITE 0
		710	# define MAP_PRIVATE 0
		711	# define MAP_SHARED 0
		712	# define MAP_FIXED 0
		713	#endif
		714
		715	#define MMAP_MAGIC PERL_MAGIC_ext
		716
		717	static int ecb_cold
		718	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		719	{
		720	int old_errno = errno;
		721	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		722	errno = old_errno;
		723
		724	mg->mg_obj = 0; /* just in case */
		725
		726	SvREADONLY_off (sv);
		727
		728	if (SvPVX (sv) != mg->mg_ptr)
		729	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		730
		731	SvCUR_set (sv, 0);
		732	SvPVX (sv) = 0;
		733	SvOK_off (sv);
700		734
701	return 0;	735	return 0;
702	}	736	}
703		737
		738	static MGVTBL mmap_vtbl = {
		739	0, 0, 0, 0, mmap_free
		740	};
		741
704	/*****************************************************************************/	742	/*****************************************************************************/
705		743
706	static void atfork_prepare (void)	744	static SV *
		745	get_cb (SV *cb_sv)
707	{	746	{
708	pthread_mutex_lock (&reqlock);	747	SvGETMAGIC (cb_sv);
709	pthread_mutex_lock (&reslock);	748	return SvOK (cb_sv) ? s_get_cv_croak (cb_sv) : 0;
710	#if !HAVE_PREADWRITE
711	pthread_mutex_lock (&preadwritelock);
712	#endif
713	#if !HAVE_READDIR_R
714	pthread_mutex_lock (&readdirlock);
715	#endif
716	}	749	}
717		750
718	static void atfork_parent (void)	751	static aio_req ecb_noinline
		752	dreq (SV *callback)
719	{	753	{
720	#if !HAVE_READDIR_R	754	SV *cb_cv;
721	pthread_mutex_unlock (&readdirlock);
722	#endif
723	#if !HAVE_PREADWRITE
724	pthread_mutex_unlock (&preadwritelock);
725	#endif
726	pthread_mutex_unlock (&reslock);
727	pthread_mutex_unlock (&reqlock);
728	}
729
730	static void atfork_child (void)
731	{
732	aio_req prv;	755	aio_req req;
		756	int req_pri = next_pri;
		757	next_pri = EIO_PRI_DEFAULT;
733		758
734	started = 0;	759	cb_cv = get_cb (callback);
735		760
736	while (reqs)	761	req = calloc (sizeof (*req), 1);
		762	if (!req)
		763	croak ("out of memory during eio_req allocation");
		764
		765	req->callback = SvREFCNT_inc (cb_cv);
		766	req->pri = req_pri;
		767
		768	return req;
		769	}
		770
		771	#define dREQ \
		772	aio_req req = dreq (callback); \
		773
		774	#define REQ_SEND \
		775	PUTBACK; \
		776	req_submit (req); \
		777	SPAGAIN; \
		778	\
		779	if (GIMME_V != G_VOID) \
		780	XPUSHs (req_sv (req, aio_req_stash));
		781
		782	ecb_inline void
		783	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		784	{
		785	if (expect_false (SvROK (path)))
737	{	786	{
738	prv = reqs;	787	SV *rv = SvRV (path);
739	reqs = prv->next;	788	SV *wdob;
740	free_req (prv);	789
		790	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		791	{
		792	path = AvARRAY (rv)[1];
		793	wdob = AvARRAY (rv)[0];
		794
		795	if (SvOK (wdob))
		796	{
		797	*wd = SvAIO_WD (wdob);
		798	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		799	}
		800	else
		801	*wd = EIO_INVALID_WD;
		802	}
		803	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		804	{
		805	*wd = (aio_wd)(long)SvIVX (rv);
		806	*wdsv = SvREFCNT_inc_NN (rv);
		807	*ptr = ".";
		808	return; /* path set to "." */
		809	}
		810	else
		811	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
741	}	812	}
742		813
743	reqs = reqe = 0;	814	*pathsv = newSVsv (path);
744		815	*ptr = SvPVbyte_nolen (*pathsv);
745	while (ress)	816	}
		817
		818	static void ecb_noinline
		819	req_set_path1 (aio_req req, SV *path)
		820	{
		821	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		822	}
		823
		824	static void ecb_noinline
		825	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		826	{
		827	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		828
		829	switch (SvTYPE (rv))
746	{	830	{
747	prv = ress;	831	case SVt_PVIO:
748	ress = prv->next;	832	case SVt_PVLV:
749	free_req (prv);	833	case SVt_PVGV:
		834	req->type = type_fh;
		835	req->sv1 = newSVsv (fh_or_path);
		836	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		837	break;
		838
		839	default:
		840	req->type = type_path;
		841	req_set_path1 (req, fh_or_path);
		842	break;
750	}	843	}
751
752	ress = rese = 0;
753
754	close (respipe [0]);
755	close (respipe [1]);
756	create_pipe ();
757
758	atfork_parent ();
759	}	844	}
760		845
761	#define dREQ \	846	XS(boot_IO__AIO) ecb_cold;
762	aio_req req; \	847
763	\
764	if (SvOK (callback) && !SvROK (callback)) \
765	croak ("clalback must be undef or of reference type"); \
766	\
767	Newz (0, req, 1, aio_cb); \
768	if (!req) \
769	croak ("out of memory during aio_req allocation"); \
770	\
771	req->callback = newSVsv (callback);
772
773	MODULE = IO::AIO PACKAGE = IO::AIO	848	MODULE = IO::AIO PACKAGE = IO::AIO
774		849
775	PROTOTYPES: ENABLE	850	PROTOTYPES: ENABLE
776		851
777	BOOT:	852	BOOT:
778	{	853	{
779	create_pipe ();	854	static const struct {
780	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	855	const char *name;
781	}	856	IV iv;
		857	} *civ, const_iv[] = {
		858	# define const_niv(name, value) { # name, (IV) value },
		859	# define const_iv(name) { # name, (IV) name },
		860	# define const_eio(name) { # name, (IV) EIO_ ## name },
782		861
		862	/* you have to re-run ./gendef0 after adding/Removing any constants here */
		863
		864	const_iv (ENOSYS)
		865	const_iv (EXDEV)
		866	const_iv (EBADR)
		867
		868	const_iv (O_RDONLY)
		869	const_iv (O_WRONLY)
		870	const_iv (O_RDWR)
		871	const_iv (O_CREAT)
		872	const_iv (O_TRUNC)
		873	const_iv (O_EXCL)
		874	const_iv (O_APPEND)
		875
		876	const_iv (O_ASYNC)
		877	const_iv (O_DIRECT)
		878	const_iv (O_NOATIME)
		879
		880	const_iv (O_CLOEXEC)
		881	const_iv (O_NOCTTY)
		882	const_iv (O_NOFOLLOW)
		883	const_iv (O_NONBLOCK)
		884	const_iv (O_EXEC)
		885	const_iv (O_SEARCH)
		886	const_iv (O_DIRECTORY)
		887	const_iv (O_DSYNC)
		888	const_iv (O_RSYNC)
		889	const_iv (O_SYNC)
		890	const_iv (O_TTY_INIT)
		891
		892	const_iv (S_IFIFO)
		893	const_iv (S_IFCHR)
		894	const_iv (S_IFBLK)
		895	const_iv (S_IFLNK)
		896	const_iv (S_IFREG)
		897	const_iv (S_IFDIR)
		898	const_iv (S_IFWHT)
		899	const_iv (S_IFSOCK)
		900	const_iv (S_IFMT)
		901
		902	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		903	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		904	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		905	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		906	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		907	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		908
		909	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		910	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		911	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		912	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		913	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		914
		915	const_iv (ST_RDONLY)
		916	const_iv (ST_NOSUID)
		917	const_iv (ST_NODEV)
		918	const_iv (ST_NOEXEC)
		919	const_iv (ST_SYNCHRONOUS)
		920	const_iv (ST_MANDLOCK)
		921	const_iv (ST_WRITE)
		922	const_iv (ST_APPEND)
		923	const_iv (ST_IMMUTABLE)
		924	const_iv (ST_NOATIME)
		925	const_iv (ST_NODIRATIME)
		926	const_iv (ST_RELATIME)
		927
		928	const_iv (PROT_NONE)
		929	const_iv (PROT_EXEC)
		930	const_iv (PROT_READ)
		931	const_iv (PROT_WRITE)
		932
		933	/*const_iv (MAP_FIXED)*/
		934	const_iv (MAP_PRIVATE)
		935	const_iv (MAP_SHARED)
		936	const_iv (MAP_ANONYMOUS)
		937
		938	/* linuxish */
		939	const_iv (MAP_HUGETLB)
		940	const_iv (MAP_LOCKED)
		941	const_iv (MAP_NORESERVE)
		942	const_iv (MAP_POPULATE)
		943	const_iv (MAP_NONBLOCK)
		944
		945	const_iv (FIEMAP_FLAG_SYNC)
		946	const_iv (FIEMAP_FLAG_XATTR)
		947	const_iv (FIEMAP_FLAGS_COMPAT)
		948	const_iv (FIEMAP_EXTENT_LAST)
		949	const_iv (FIEMAP_EXTENT_UNKNOWN)
		950	const_iv (FIEMAP_EXTENT_DELALLOC)
		951	const_iv (FIEMAP_EXTENT_ENCODED)
		952	const_iv (FIEMAP_EXTENT_DATA_ENCRYPTED)
		953	const_iv (FIEMAP_EXTENT_NOT_ALIGNED)
		954	const_iv (FIEMAP_EXTENT_DATA_INLINE)
		955	const_iv (FIEMAP_EXTENT_DATA_TAIL)
		956	const_iv (FIEMAP_EXTENT_UNWRITTEN)
		957	const_iv (FIEMAP_EXTENT_MERGED)
		958	const_iv (FIEMAP_EXTENT_SHARED)
		959
		960	const_eio (SEEK_SET)
		961	const_eio (SEEK_CUR)
		962	const_eio (SEEK_END)
		963
		964	const_eio (MCL_FUTURE)
		965	const_eio (MCL_CURRENT)
		966
		967	const_eio (MS_ASYNC)
		968	const_eio (MS_INVALIDATE)
		969	const_eio (MS_SYNC)
		970
		971	const_eio (MT_MODIFY)
		972
		973	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		974	const_eio (SYNC_FILE_RANGE_WRITE)
		975	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		976
		977	const_eio (FALLOC_FL_KEEP_SIZE)
		978
		979	const_eio (READDIR_DENTS)
		980	const_eio (READDIR_DIRS_FIRST)
		981	const_eio (READDIR_STAT_ORDER)
		982	const_eio (READDIR_FOUND_UNKNOWN)
		983
		984	const_eio (DT_UNKNOWN)
		985	const_eio (DT_FIFO)
		986	const_eio (DT_CHR)
		987	const_eio (DT_DIR)
		988	const_eio (DT_BLK)
		989	const_eio (DT_REG)
		990	const_eio (DT_LNK)
		991	const_eio (DT_SOCK)
		992	const_eio (DT_WHT)
		993	};
		994
		995	aio_stash = gv_stashpv ("IO::AIO" , 1);
		996	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
		997	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
		998	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
		999
		1000	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
		1001	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
		1002
		1003	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1004
		1005	reinit ();
		1006	}
		1007
783	void	1008	void
784	min_parallel(nthreads)	1009	reinit ()
785	int nthreads	1010	PROTOTYPE:
		1011
		1012	void
		1013	max_poll_reqs (unsigned int nreqs)
786	PROTOTYPE: $	1014	PROTOTYPE: $
		1015	CODE:
		1016	eio_set_max_poll_reqs (nreqs);
787		1017
788	void	1018	void
789	max_parallel(nthreads)	1019	max_poll_time (double nseconds)
790	int nthreads
791	PROTOTYPE: $	1020	PROTOTYPE: $
792
793	int
794	max_outstanding(nreqs)
795	int nreqs
796	PROTOTYPE: $
797	CODE:	1021	CODE:
798	RETVAL = max_outstanding;	1022	eio_set_max_poll_time (nseconds);
		1023
		1024	void
		1025	min_parallel (unsigned int nthreads)
		1026	PROTOTYPE: $
		1027	CODE:
		1028	eio_set_min_parallel (nthreads);
		1029
		1030	void
		1031	max_parallel (unsigned int nthreads)
		1032	PROTOTYPE: $
		1033	CODE:
		1034	eio_set_max_parallel (nthreads);
		1035
		1036	void
		1037	max_idle (unsigned int nthreads)
		1038	PROTOTYPE: $
		1039	CODE:
		1040	eio_set_max_idle (nthreads);
		1041
		1042	void
		1043	idle_timeout (unsigned int seconds)
		1044	PROTOTYPE: $
		1045	CODE:
		1046	eio_set_idle_timeout (seconds);
		1047
		1048	void
		1049	max_outstanding (unsigned int maxreqs)
		1050	PROTOTYPE: $
		1051	CODE:
799	max_outstanding = nreqs;	1052	max_outstanding = maxreqs;
800		1053
801	void	1054	void
802	aio_open(pathname,flags,mode,callback=&PL_sv_undef)	1055	aio_wd (SV8 *pathname, SV *callback=&PL_sv_undef)
803	SV * pathname
804	int flags
805	int mode
806	SV * callback
807	PROTOTYPE: $$$;$
808	CODE:	1056	PPCODE:
809	{	1057	{
810	dREQ;	1058	dREQ;
811		1059
		1060	req->type = EIO_WD_OPEN;
		1061	req_set_path1 (req, pathname);
		1062
		1063	REQ_SEND;
		1064	}
		1065
		1066	void
		1067	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1068	PPCODE:
		1069	{
		1070	dREQ;
		1071
812	req->type = REQ_OPEN;	1072	req->type = EIO_OPEN;
813	req->data = newSVsv (pathname);	1073	req_set_path1 (req, pathname);
814	req->dataptr = SvPVbyte_nolen (req->data);
815	req->fd = flags;	1074	req->int1 = flags;
816	req->mode = mode;	1075	req->int2 = mode;
817		1076
818	send_req (req);	1077	REQ_SEND;
819	}	1078	}
820		1079
821	void	1080	void
822	aio_close(fh,callback=&PL_sv_undef)	1081	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
823	SV * fh
824	SV * callback
825	PROTOTYPE: $;$
826	ALIAS:	1082	ALIAS:
827	aio_close = REQ_CLOSE
828	aio_fsync = REQ_FSYNC	1083	aio_fsync = EIO_FSYNC
829	aio_fdatasync = REQ_FDATASYNC	1084	aio_fdatasync = EIO_FDATASYNC
		1085	aio_syncfs = EIO_SYNCFS
830	CODE:	1086	PPCODE:
831	{	1087	{
		1088	int fd = s_fileno_croak (fh, 0);
832	dREQ;	1089	dREQ;
833		1090
834	req->type = ix;	1091	req->type = ix;
835	req->fh = newSVsv (fh);	1092	req->sv1 = newSVsv (fh);
836	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1093	req->int1 = fd;
837		1094
838	send_req (req);	1095	REQ_SEND;
839	}	1096	}
840		1097
841	void	1098	void
		1099	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1100	PPCODE:
		1101	{
		1102	int fd = s_fileno_croak (fh, 0);
		1103	dREQ;
		1104
		1105	req->type = EIO_SYNC_FILE_RANGE;
		1106	req->sv1 = newSVsv (fh);
		1107	req->int1 = fd;
		1108	req->offs = offset;
		1109	req->size = nbytes;
		1110	req->int2 = flags;
		1111
		1112	REQ_SEND;
		1113	}
		1114
		1115	void
		1116	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1117	PPCODE:
		1118	{
		1119	int fd = s_fileno_croak (fh, 0);
		1120	dREQ;
		1121
		1122	req->type = EIO_FALLOCATE;
		1123	req->sv1 = newSVsv (fh);
		1124	req->int1 = fd;
		1125	req->int2 = mode;
		1126	req->offs = offset;
		1127	req->size = len;
		1128
		1129	REQ_SEND;
		1130	}
		1131
		1132	void
		1133	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1134	PPCODE:
		1135	{
		1136	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1137	int fd = s_fileno_croak (fh, 0);
		1138	dREQ;
		1139
		1140	if (expect_false (close_fd < 0))
		1141	{
		1142	int pipefd [2];
		1143
		1144	if (
		1145	#ifdef _WIN32
		1146	_pipe (pipefd, 1, _O_BINARY) < 0
		1147	#else
		1148	pipe (pipefd) < 0
		1149	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1150	#endif
		1151	|| close (pipefd [1]) < 0
		1152	)
		1153	abort (); /*D*/
		1154
		1155	close_fd = pipefd [0];
		1156	}
		1157
		1158	req->type = EIO_DUP2;
		1159	req->int1 = close_fd;
		1160	req->sv2 = newSVsv (fh);
		1161	req->int2 = fd;
		1162
		1163	REQ_SEND;
		1164	}
		1165
		1166	void
		1167	aio_seek (SV *fh, SV *offset, int whence, SV *callback=&PL_sv_undef)
		1168	PPCODE:
		1169	{
		1170	int fd = s_fileno_croak (fh, 0);
		1171	dREQ;
		1172
		1173	req->type = EIO_SEEK;
		1174	req->sv1 = newSVsv (fh);
		1175	req->int1 = fd;
		1176	req->offs = SvVAL64 (offset);
		1177	req->int2 = whence;
		1178
		1179	REQ_SEND;
		1180	}
		1181
		1182	void
842	aio_read(fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1183	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
843	SV * fh
844	UV offset
845	UV length
846	SV * data
847	UV dataoffset
848	SV * callback
849	ALIAS:	1184	ALIAS:
850	aio_read = REQ_READ	1185	aio_read = EIO_READ
851	aio_write = REQ_WRITE	1186	aio_write = EIO_WRITE
852	PROTOTYPE: $$$$$;$
853	CODE:	1187	PPCODE:
854	{	1188	{
855	aio_req req;
856	STRLEN svlen;	1189	STRLEN svlen;
		1190	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
857	char *svptr = SvPVbyte (data, svlen);	1191	char *svptr = SvPVbyte (data, svlen);
858		1192	UV len = SvUV (length);
859	SvUPGRADE (data, SVt_PV);
860	SvPOK_on (data);
861		1193
862	if (dataoffset < 0)	1194	if (dataoffset < 0)
863	dataoffset += svlen;	1195	dataoffset += svlen;
864		1196
865	if (dataoffset < 0 || dataoffset > svlen)	1197	if (dataoffset < 0 || dataoffset > svlen)
866	croak ("data offset outside of string");	1198	croak ("dataoffset outside of data scalar");
867		1199
868	if (ix == REQ_WRITE)	1200	if (ix == EIO_WRITE)
869	{	1201	{
870	/* write: check length and adjust. */	1202	/* write: check length and adjust. */
871	if (length < 0 || length + dataoffset > svlen)	1203	if (!SvOK (length) || len + dataoffset > svlen)
872	length = svlen - dataoffset;	1204	len = svlen - dataoffset;
873	}	1205	}
874	else	1206	else
875	{	1207	{
876	/* read: grow scalar as necessary */	1208	/* read: check type and grow scalar as necessary */
		1209	SvUPGRADE (data, SVt_PV);
877	svptr = SvGROW (data, length + dataoffset);	1210	svptr = SvGROW (data, len + dataoffset + 1);
878	}	1211	}
879
880	if (length < 0)
881	croak ("length must not be negative");
882		1212
883	{	1213	{
884	dREQ;	1214	dREQ;
885		1215
886	req->type = ix;	1216	req->type = ix;
887	req->fh = newSVsv (fh);	1217	req->sv1 = newSVsv (fh);
888	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1218	req->int1 = fd;
889	: IoOFP (sv_2io (fh)));	1219	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
890	req->offset = offset;	1220	req->size = len;
891	req->length = length;
892	req->data = SvREFCNT_inc (data);	1221	req->sv2 = SvREFCNT_inc (data);
893	req->dataptr = (char *)svptr + dataoffset;	1222	req->ptr2 = (char *)svptr + dataoffset;
		1223	req->stroffset = dataoffset;
894		1224
895	if (!SvREADONLY (data))	1225	if (!SvREADONLY (data))
896	{	1226	{
897	SvREADONLY_on (data);	1227	SvREADONLY_on (data);
898	req->data2ptr = (void *)data;	1228	req->flags |= FLAG_SV2_RO_OFF;
899	}	1229	}
900		1230
901	send_req (req);	1231	REQ_SEND;
902	}	1232	}
903	}	1233	}
904		1234
905	void	1235	void
906	aio_sendfile(out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1236	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
907	SV * out_fh	1237	ALIAS:
908	SV * in_fh	1238	aio_readlink = EIO_READLINK
909	UV in_offset	1239	aio_realpath = EIO_REALPATH
910	UV length
911	SV * callback
912	PROTOTYPE: $$$$;$
913	CODE:	1240	PPCODE:
914	{	1241	{
		1242	dREQ;
		1243
		1244	req->type = ix;
		1245	req_set_path1 (req, pathname);
		1246
		1247	REQ_SEND;
		1248	}
		1249
		1250	void
		1251	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1252	PPCODE:
		1253	{
		1254	int ifd = s_fileno_croak (in_fh , 0);
		1255	int ofd = s_fileno_croak (out_fh, 1);
915	dREQ;	1256	dREQ;
916		1257
917	req->type = REQ_SENDFILE;	1258	req->type = EIO_SENDFILE;
918	req->fh = newSVsv (out_fh);	1259	req->sv1 = newSVsv (out_fh);
919	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1260	req->int1 = ofd;
920	req->fh2 = newSVsv (in_fh);	1261	req->sv2 = newSVsv (in_fh);
921	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1262	req->int2 = ifd;
922	req->offset = in_offset;	1263	req->offs = in_offset;
923	req->length = length;	1264	req->size = length;
924		1265
925	send_req (req);	1266	REQ_SEND;
926	}	1267	}
927		1268
928	void	1269	void
929	aio_readahead(fh,offset,length,callback=&PL_sv_undef)	1270	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
930	SV * fh
931	UV offset
932	IV length
933	SV * callback
934	PROTOTYPE: $$$;$
935	CODE:	1271	PPCODE:
936	{	1272	{
		1273	int fd = s_fileno_croak (fh, 0);
937	dREQ;	1274	dREQ;
938		1275
939	req->type = REQ_READAHEAD;	1276	req->type = EIO_READAHEAD;
940	req->fh = newSVsv (fh);	1277	req->sv1 = newSVsv (fh);
941	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1278	req->int1 = fd;
942	req->offset = offset;	1279	req->offs = offset;
943	req->length = length;	1280	req->size = length;
944		1281
945	send_req (req);	1282	REQ_SEND;
946	}	1283	}
947		1284
948	void	1285	void
949	aio_stat(fh_or_path,callback=&PL_sv_undef)	1286	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
950	SV * fh_or_path
951	SV * callback
952	ALIAS:	1287	ALIAS:
953	aio_stat = REQ_STAT	1288	aio_stat = EIO_STAT
954	aio_lstat = REQ_LSTAT	1289	aio_lstat = EIO_LSTAT
		1290	aio_statvfs = EIO_STATVFS
		1291	PPCODE:
		1292	{
		1293	dREQ;
		1294
		1295	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1296
		1297	REQ_SEND;
		1298	}
		1299
		1300	UV
		1301	major (UV dev)
		1302	ALIAS:
		1303	minor = 1
955	CODE:	1304	CODE:
		1305	RETVAL = ix ? major (dev) : minor (dev);
		1306	OUTPUT:
		1307	RETVAL
		1308
		1309	UV
		1310	makedev (UV maj, UV min)
		1311	CODE:
		1312	RETVAL = makedev (maj, min);
		1313	OUTPUT:
		1314	RETVAL
		1315
		1316	void
		1317	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1318	PPCODE:
956	{	1319	{
957	dREQ;	1320	dREQ;
958		1321
959	New (0, req->statdata, 1, Stat_t);	1322	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
960	if (!req->statdata)	1323	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
961	{	1324	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
962	free_req (req);
963	croak ("out of memory during aio_req->statdata allocation");
964	}
965		1325
966	if (SvPOK (fh_or_path))	1326	REQ_SEND;
967	{
968	req->type = ix;
969	req->data = newSVsv (fh_or_path);
970	req->dataptr = SvPVbyte_nolen (req->data);
971	}
972	else
973	{
974	req->type = REQ_FSTAT;
975	req->fh = newSVsv (fh_or_path);
976	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
977	}
978
979	send_req (req);
980	}	1327	}
981		1328
982	void	1329	void
		1330	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1331	PPCODE:
		1332	{
		1333	dREQ;
		1334
		1335	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1336	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1337
		1338	REQ_SEND;
		1339	}
		1340
		1341	void
		1342	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1343	PPCODE:
		1344	{
		1345	dREQ;
		1346
		1347	req->int2 = mode;
		1348	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1349
		1350	REQ_SEND;
		1351	}
		1352
		1353	void
		1354	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1355	PPCODE:
		1356	{
		1357	dREQ;
		1358
		1359	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1360	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1361	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1362
		1363	REQ_SEND;
		1364	}
		1365
		1366	void
		1367	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1368	PPCODE:
		1369	{
		1370	dREQ;
		1371
		1372	req->type = EIO_READDIR;
		1373	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1374
		1375	if (flags & EIO_READDIR_DENTS)
		1376	req->int1 |= EIO_READDIR_CUSTOM2;
		1377
		1378	req_set_path1 (req, pathname);
		1379
		1380	REQ_SEND;
		1381	}
		1382
		1383	void
		1384	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1385	PPCODE:
		1386	{
		1387	dREQ;
		1388
		1389	req->type = EIO_MKDIR;
		1390	req->int2 = mode;
		1391	req_set_path1 (req, pathname);
		1392
		1393	REQ_SEND;
		1394	}
		1395
		1396	void
983	aio_unlink(pathname,callback=&PL_sv_undef)	1397	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
984	SV * pathname
985	SV * callback
986	ALIAS:	1398	ALIAS:
987	aio_unlink = REQ_UNLINK	1399	aio_unlink = EIO_UNLINK
988	aio_rmdir = REQ_RMDIR	1400	aio_rmdir = EIO_RMDIR
		1401	aio_readdir = EIO_READDIR
989	CODE:	1402	PPCODE:
990	{	1403	{
991	dREQ;	1404	dREQ;
992		1405
993	req->type = ix;	1406	req->type = ix;
994	req->data = newSVsv (pathname);	1407	req_set_path1 (req, pathname);
995	req->dataptr = SvPVbyte_nolen (req->data);
996
997	send_req (req);
998	}
999		1408
		1409	REQ_SEND;
		1410	}
		1411
1000	void	1412	void
1001	aio_symlink(oldpath,newpath,callback=&PL_sv_undef)	1413	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1002	SV * oldpath	1414	ALIAS:
1003	SV * newpath	1415	aio_link = EIO_LINK
1004	SV * callback	1416	aio_symlink = EIO_SYMLINK
		1417	aio_rename = EIO_RENAME
1005	CODE:	1418	PPCODE:
1006	{	1419	{
		1420	eio_wd wd2 = 0;
1007	dREQ;	1421	dREQ;
1008		1422
1009	req->type = REQ_SYMLINK;	1423	req->type = ix;
1010	req->fh = newSVsv (oldpath);	1424	req_set_path1 (req, oldpath);
1011	req->data2ptr = SvPVbyte_nolen (req->fh);	1425	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1012	req->data = newSVsv (newpath);	1426	req->int3 = (long)wd2;
1013	req->dataptr = SvPVbyte_nolen (req->data);
1014		1427
1015	send_req (req);	1428	REQ_SEND;
1016	}	1429	}
1017		1430
1018	void	1431	void
1019	aio_readdir(pathname,callback=&PL_sv_undef)	1432	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1020	SV * pathname
1021	SV * callback
1022	CODE:	1433	PPCODE:
1023	{	1434	{
1024	dREQ;	1435	dREQ;
1025		1436
1026	req->type = REQ_READDIR;	1437	req->type = EIO_MKNOD;
1027	req->data = newSVsv (pathname);	1438	req->int2 = (mode_t)mode;
1028	req->dataptr = SvPVbyte_nolen (req->data);	1439	req->offs = dev;
		1440	req_set_path1 (req, pathname);
1029		1441
1030	send_req (req);	1442	REQ_SEND;
1031	}	1443	}
1032		1444
1033	void	1445	void
1034	flush()	1446	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
1035	PROTOTYPE:	1447	ALIAS:
		1448	aio_mtouch = EIO_MTOUCH
		1449	aio_msync = EIO_MSYNC
		1450	PPCODE:
		1451	{
		1452	STRLEN svlen;
		1453	char *svptr = SvPVbyte (data, svlen);
		1454	UV len = SvUV (length);
		1455
		1456	if (offset < 0)
		1457	offset += svlen;
		1458
		1459	if (offset < 0 || offset > svlen)
		1460	croak ("offset outside of scalar");
		1461
		1462	if (!SvOK (length) || len + offset > svlen)
		1463	len = svlen - offset;
		1464
		1465	{
		1466	dREQ;
		1467
		1468	req->type = ix;
		1469	req->sv2 = SvREFCNT_inc (data);
		1470	req->ptr2 = (char *)svptr + offset;
		1471	req->size = len;
		1472	req->int1 = flags;
		1473
		1474	REQ_SEND;
		1475	}
		1476	}
		1477
		1478	void
		1479	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1480	PPCODE:
		1481	{
		1482	STRLEN svlen;
		1483	char *svptr = SvPVbyte (data, svlen);
		1484	UV len = SvUV (length);
		1485
		1486	if (offset < 0)
		1487	offset += svlen;
		1488
		1489	if (offset < 0 || offset > svlen)
		1490	croak ("offset outside of scalar");
		1491
		1492	if (!SvOK (length) || len + offset > svlen)
		1493	len = svlen - offset;
		1494
		1495	{
		1496	dREQ;
		1497
		1498	req->type = EIO_MLOCK;
		1499	req->sv2 = SvREFCNT_inc (data);
		1500	req->ptr2 = (char *)svptr + offset;
		1501	req->size = len;
		1502
		1503	REQ_SEND;
		1504	}
		1505	}
		1506
		1507	void
		1508	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1509	PPCODE:
		1510	{
		1511	dREQ;
		1512
		1513	req->type = EIO_MLOCKALL;
		1514	req->int1 = flags;
		1515
		1516	REQ_SEND;
		1517	}
		1518
		1519	void
		1520	aio_fiemap (SV *fh, off_t start, SV *length, U32 flags, SV *count, SV *callback=&PL_sv_undef)
		1521	PPCODE:
		1522	{
		1523	int fd = s_fileno_croak (fh, 0);
		1524	dREQ;
		1525
		1526	req->type = EIO_CUSTOM;
		1527	req->sv1 = newSVsv (fh);
		1528	req->int1 = fd;
		1529
		1530	req->feed = fiemap;
		1531	#if HAVE_FIEMAP
		1532	/* keep our fingers crossed that the next two types are 64 bit */
		1533	req->offs = start;
		1534	req->size = SvOK (length) ? SvVAL64 (length) : ~0ULL;
		1535	req->int2 = flags;
		1536	req->int3 = SvOK (count) ? SvIV (count) : -1;
		1537	#endif
		1538
		1539	REQ_SEND;
		1540	}
		1541
		1542	void
		1543	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1544	PPCODE:
		1545	{
		1546	dREQ;
		1547
		1548	req->type = EIO_BUSY;
		1549	req->nv1 = delay < 0. ? 0. : delay;
		1550
		1551	REQ_SEND;
		1552	}
		1553
		1554	void
		1555	aio_group (SV *callback=&PL_sv_undef)
		1556	PPCODE:
		1557	{
		1558	dREQ;
		1559
		1560	req->type = EIO_GROUP;
		1561
		1562	req_submit (req);
		1563	XPUSHs (req_sv (req, aio_grp_stash));
		1564	}
		1565
		1566	void
		1567	aio_nop (SV *callback=&PL_sv_undef)
		1568	ALIAS:
		1569	aio_nop = EIO_NOP
		1570	aio_sync = EIO_SYNC
		1571	PPCODE:
		1572	{
		1573	dREQ;
		1574
		1575	req->type = ix;
		1576
		1577	REQ_SEND;
		1578	}
		1579
		1580	int
		1581	aioreq_pri (int pri = 0)
1036	CODE:	1582	CODE:
		1583	RETVAL = next_pri;
		1584	if (items > 0)
		1585	{
		1586	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1587	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1588	next_pri = pri;
		1589	}
		1590	OUTPUT:
		1591	RETVAL
		1592
		1593	void
		1594	aioreq_nice (int nice = 0)
		1595	CODE:
		1596	nice = next_pri - nice;
		1597	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1598	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1599	next_pri = nice;
		1600
		1601	void
		1602	flush ()
		1603	CODE:
1037	while (nreqs)	1604	while (eio_nreqs ())
1038	{	1605	{
1039	poll_wait ();	1606	poll_wait ();
1040	poll_cb ();	1607	poll_cb ();
1041	}	1608	}
1042		1609
1043	void	1610	int
1044	poll()	1611	poll ()
1045	PROTOTYPE:
1046	CODE:	1612	CODE:
1047	if (nreqs)
1048	{
1049	poll_wait ();	1613	poll_wait ();
1050	poll_cb ();	1614	RETVAL = poll_cb ();
1051	}
1052
1053	int
1054	poll_fileno()
1055	PROTOTYPE:
1056	CODE:
1057	RETVAL = respipe [0];
1058	OUTPUT:	1615	OUTPUT:
1059	RETVAL	1616	RETVAL
1060		1617
1061	int	1618	int
		1619	poll_fileno ()
		1620	CODE:
		1621	RETVAL = s_epipe_fd (&respipe);
		1622	OUTPUT:
		1623	RETVAL
		1624
		1625	int
1062	poll_cb(...)	1626	poll_cb (...)
1063	PROTOTYPE:	1627	PROTOTYPE:
1064	CODE:	1628	CODE:
1065	RETVAL = poll_cb ();	1629	RETVAL = poll_cb ();
1066	OUTPUT:	1630	OUTPUT:
1067	RETVAL	1631	RETVAL
1068		1632
1069	void	1633	void
1070	poll_wait()	1634	poll_wait ()
1071	PROTOTYPE:
1072	CODE:	1635	CODE:
1073	if (nreqs)
1074	poll_wait ();	1636	poll_wait ();
1075		1637
1076	int	1638	int
1077	nreqs()	1639	nreqs ()
1078	PROTOTYPE:
1079	CODE:	1640	CODE:
1080	RETVAL = nreqs;	1641	RETVAL = eio_nreqs ();
1081	OUTPUT:	1642	OUTPUT:
1082	RETVAL	1643	RETVAL
1083		1644
		1645	int
		1646	nready ()
		1647	CODE:
		1648	RETVAL = eio_nready ();
		1649	OUTPUT:
		1650	RETVAL
		1651
		1652	int
		1653	npending ()
		1654	CODE:
		1655	RETVAL = eio_npending ();
		1656	OUTPUT:
		1657	RETVAL
		1658
		1659	int
		1660	nthreads ()
		1661	CODE:
		1662	RETVAL = eio_nthreads ();
		1663	OUTPUT:
		1664	RETVAL
		1665
		1666	int
		1667	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1668	CODE:
		1669	RETVAL = posix_fadvise (fh, offset, length, advice);
		1670	OUTPUT:
		1671	RETVAL
		1672
		1673	IV
		1674	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1675	CODE:
		1676	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1677	OUTPUT:
		1678	RETVAL
		1679
		1680	void
		1681	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1682	PPCODE:
		1683	sv_unmagic (scalar, MMAP_MAGIC);
		1684	{
		1685	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1686	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1687	if (addr == (void *)-1)
		1688	XSRETURN_NO;
		1689
		1690	sv_force_normal (scalar);
		1691
		1692	/* we store the length in mg_obj, as namlen is I32 :/ */
		1693	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1694	->mg_obj = (SV *)length;
		1695
		1696	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1697
		1698	if (!(prot & PROT_WRITE))
		1699	SvREADONLY_on (scalar);
		1700
		1701	if (SvLEN (scalar))
		1702	Safefree (SvPVX (scalar));
		1703
		1704	SvPVX (scalar) = (char *)addr;
		1705	SvCUR_set (scalar, length);
		1706	SvLEN_set (scalar, 0);
		1707	SvPOK_only (scalar);
		1708
		1709	XSRETURN_YES;
		1710	}
		1711
		1712	void
		1713	munmap (SV *scalar)
		1714	CODE:
		1715	sv_unmagic (scalar, MMAP_MAGIC);
		1716
		1717	int
		1718	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1719	ALIAS:
		1720	mprotect = 1
		1721	CODE:
		1722	{
		1723	STRLEN svlen;
		1724	void *addr = SvPVbyte (scalar, svlen);
		1725	size_t len = SvUV (length);
		1726
		1727	if (offset < 0)
		1728	offset += svlen;
		1729
		1730	if (offset < 0 || offset > svlen)
		1731	croak ("offset outside of scalar");
		1732
		1733	if (!SvOK (length) || len + offset > svlen)
		1734	len = svlen - offset;
		1735
		1736	addr = (void *)(((intptr_t)addr) + offset);
		1737	eio_page_align (&addr, &len);
		1738
		1739	switch (ix)
		1740	{
		1741	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1742	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1743	}
		1744	}
		1745	OUTPUT:
		1746	RETVAL
		1747
		1748	int
		1749	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1750	CODE:
		1751	{
		1752	STRLEN svlen;
		1753	void *addr = SvPVbyte (scalar, svlen);
		1754	size_t len = SvUV (length);
		1755
		1756	if (offset < 0)
		1757	offset += svlen;
		1758
		1759	if (offset < 0 || offset > svlen)
		1760	croak ("offset outside of scalar");
		1761
		1762	if (!SvOK (length) || len + offset > svlen)
		1763	len = svlen - offset;
		1764
		1765	addr = (void *)(((intptr_t)addr) + offset);
		1766	eio_page_align (&addr, &len);
		1767	#if _POSIX_MEMLOCK_RANGE
		1768	RETVAL = munlock (addr, len);
		1769	#else
		1770	RETVAL = ((errno = ENOSYS), -1);
		1771	#endif
		1772	}
		1773	OUTPUT:
		1774	RETVAL
		1775
		1776	int
		1777	munlockall ()
		1778	CODE:
		1779	#if _POSIX_MEMLOCK
		1780	munlockall ();
		1781	#else
		1782	RETVAL = -1;
		1783	errno = ENOSYS;
		1784	#endif
		1785	OUTPUT:
		1786	RETVAL
		1787
		1788	void _on_next_submit (SV *cb)
		1789	CODE:
		1790	SvREFCNT_dec (on_next_submit);
		1791	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1792
		1793	PROTOTYPES: DISABLE
		1794
		1795	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1796
		1797	BOOT:
		1798	{
		1799	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1800	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1801	}
		1802
		1803	void
		1804	DESTROY (SV *self)
		1805	CODE:
		1806	{
		1807	aio_wd wd = SvAIO_WD (self);
		1808	#if HAVE_AT
		1809	{
		1810	SV *callback = &PL_sv_undef;
		1811	dREQ; /* clobbers next_pri :/ */
		1812	next_pri = req->pri; /* restore next_pri */
		1813	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1814	req->type = EIO_WD_CLOSE;
		1815	req->wd = wd;
		1816	REQ_SEND;
		1817	}
		1818	#else
		1819	eio_wd_close_sync (wd);
		1820	#endif
		1821	}
		1822
		1823	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1824
		1825	void
		1826	cancel (aio_req_ornot req)
		1827	CODE:
		1828	eio_cancel (req);
		1829
		1830	void
		1831	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1832	PPCODE:
		1833	{
		1834	if (GIMME_V != G_VOID)
		1835	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1836
		1837	if (items > 1)
		1838	{
		1839	SV *cb_cv =get_cb (callback);
		1840
		1841	SvREFCNT_dec (req->callback);
		1842	req->callback = SvREFCNT_inc (cb_cv);
		1843	}
		1844	}
		1845
		1846	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1847
		1848	void
		1849	add (aio_req grp, ...)
		1850	PPCODE:
		1851	{
		1852	int i;
		1853
		1854	if (grp->int1 == 2)
		1855	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1856
		1857	for (i = 1; i < items; ++i )
		1858	{
		1859	aio_req req;
		1860
		1861	if (GIMME_V != G_VOID)
		1862	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1863
		1864	req = SvAIO_REQ (ST (i));
		1865
		1866	if (req)
		1867	eio_grp_add (grp, req);
		1868	}
		1869	}
		1870
		1871	void
		1872	cancel_subs (aio_req_ornot req)
		1873	CODE:
		1874	req_cancel_subs (req);
		1875
		1876	void
		1877	result (aio_req grp, ...)
		1878	CODE:
		1879	{
		1880	int i;
		1881	AV *av;
		1882
		1883	grp->errorno = errno;
		1884
		1885	av = newAV ();
		1886	av_extend (av, items - 1);
		1887
		1888	for (i = 1; i < items; ++i )
		1889	av_push (av, newSVsv (ST (i)));
		1890
		1891	SvREFCNT_dec (grp->sv1);
		1892	grp->sv1 = (SV *)av;
		1893	}
		1894
		1895	void
		1896	errno (aio_req grp, int errorno = errno)
		1897	CODE:
		1898	grp->errorno = errorno;
		1899
		1900	void
		1901	limit (aio_req grp, int limit)
		1902	CODE:
		1903	eio_grp_limit (grp, limit);
		1904
		1905	void
		1906	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1907	CODE:
		1908	{
		1909	SvREFCNT_dec (grp->sv2);
		1910	grp->sv2 = newSVsv (callback);
		1911	grp->feed = aio_grp_feed;
		1912
		1913	if (grp->int2 <= 0)
		1914	grp->int2 = 2;
		1915
		1916	eio_grp_limit (grp, grp->int2);
		1917	}
		1918

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