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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 1.208 by root, Sat Jan 7 18:42:43 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 <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	/* perl namespace pollution */
		25	#undef VERSION
		26
		27	/* perl stupidly overrides readdir and maybe others */
		28	/* with thread-unsafe versions, imagine that :( */
		29	#undef readdir
		30	#undef opendir
		31	#undef closedir
		32
		33	#ifdef _WIN32
		34
		35	// perl overrides all those nice libc functions
		36
		37	#undef malloc
		38	#undef free
		39	#undef open
		40	#undef read
		41	#undef write
		42	#undef send
		43	#undef recv
		44	#undef stat
		45	#undef lstat
		46	#undef fstat
		47	#undef truncate
		48	#undef ftruncate
		49	#undef open
		50	#undef link
		51	#undef close
		52	#undef unlink
		53	#undef mkdir
		54	#undef rmdir
		55	#undef rename
		56	#undef lseek
		57	#undef opendir
		58	#undef readdir
		59	#undef closedir
		60	#undef chmod
		61	#undef fchmod
		62	#undef dup
		63	#undef dup2
		64	#undef abort
		65	#undef pipe
		66
		67	#define EIO_STRUCT_STAT struct _stati64
		68	#define EIO_STRUCT_STATI64
		69
		70	#else
		71
29	# include <sys/socket.h>	72	#include <sys/time.h>
30	# elif __solaris /* not yet */
31	# include <sys/sendfile.h>	73	#include <sys/select.h>
		74	#include <unistd.h>
		75	#include <utime.h>
		76	#include <signal.h>
		77
		78	#define EIO_STRUCT_STAT Stat_t
		79
		80	#endif
		81
		82	/* use NV for 32 bit perls as it allows larger offsets */
		83	#if IVSIZE >= 8
		84	# define VAL64 IV
		85	# define SvVAL64 SvIV
		86	# define newSVval64 newSViv
		87	#else
		88	# define VAL64 NV
		89	# define SvVAL64 SvNV
		90	# define newSVval64 newSVnv
		91	#endif
		92
		93	/*****************************************************************************/
		94
		95	#if __GNUC__ >= 3
		96	# define expect(expr,value) __builtin_expect ((expr),(value))
		97	#else
		98	# define expect(expr,value) (expr)
		99	#endif
		100
		101	#define expect_false(expr) expect ((expr) != 0, 0)
		102	#define expect_true(expr) expect ((expr) != 0, 1)
		103
		104	/*****************************************************************************/
		105
		106	typedef SV SV8; /* byte-sv, used for argument-checking */
		107	typedef int aio_rfd; /* read file desriptor */
		108	typedef int aio_wfd; /* write file descriptor */
		109
		110	static HV *aio_stash, *aio_req_stash, *aio_grp_stash, *aio_wd_stash;
		111
		112	#define EIO_REQ_MEMBERS \
		113	SV *callback; \
		114	SV *sv1, *sv2; \
		115	SV *sv3, *sv4; \
		116	STRLEN stroffset; \
		117	SV *self;
		118
		119	#define EIO_NO_WRAPPERS 1
		120
		121	#include "libeio/config.h"
		122	#include "libeio/eio.h"
		123
		124	static int req_invoke (eio_req *req);
		125	#define EIO_FINISH(req) req_invoke (req)
		126	static void req_destroy (eio_req *grp);
		127	#define EIO_DESTROY(req) req_destroy (req)
		128
		129	#include "libeio/eio.c"
		130
		131	/* Linux/others */
		132	#ifndef O_ASYNC
		133	# define O_ASYNC 0
		134	#endif
		135	#ifndef O_DIRECT
		136	# define O_DIRECT 0
		137	#endif
		138	#ifndef O_NOATIME
		139	# define O_NOATIME 0
		140	#endif
		141
		142	/* POSIX */
		143	#ifndef O_CLOEXEC
		144	# define O_CLOEXEC 0
		145	#endif
		146	#ifndef O_NOFOLLOW
		147	# define O_NOFOLLOW 0
		148	#endif
		149	#ifndef O_NOCTTY
		150	# define O_NOCTTY 0
		151	#endif
		152	#ifndef O_NONBLOCK
		153	# define O_NONBLOCK 0
		154	#endif
		155	#ifndef O_EXEC
		156	# define O_EXEC 0
		157	#endif
		158	#ifndef O_SEARCH
		159	# define O_SEARCH 0
		160	#endif
		161	#ifndef O_DIRECTORY
		162	# define O_DIRECTORY 0
		163	#endif
		164	#ifndef O_DSYNC
		165	# define O_DSYNC 0
		166	#endif
		167	#ifndef O_RSYNC
		168	# define O_RSYNC 0
		169	#endif
		170	#ifndef O_SYNC
		171	# define O_SYNC 0
		172	#endif
		173	#ifndef O_TTY_INIT
		174	# define O_TTY_INIT 0
		175	#endif
		176
		177	#ifndef POSIX_FADV_NORMAL
		178	# define POSIX_FADV_NORMAL 0
		179	#endif
		180	#ifndef POSIX_FADV_SEQUENTIAL
		181	# define POSIX_FADV_SEQUENTIAL 0
		182	#endif
		183	#ifndef POSIX_FADV_RANDOM
		184	# define POSIX_FADV_RANDOM 0
		185	#endif
		186	#ifndef POSIX_FADV_NOREUSE
		187	# define POSIX_FADV_NOREUSE 0
		188	#endif
		189	#ifndef POSIX_FADV_WILLNEED
		190	# define POSIX_FADV_WILLNEED 0
		191	#endif
		192	#ifndef POSIX_FADV_DONTNEED
		193	# define POSIX_FADV_DONTNEED 0
		194	#endif
		195
		196	#if !HAVE_POSIX_FADVISE
		197	# define posix_fadvise(a,b,c,d) errno = ENOSYS /* also return ENOSYS */
		198	#endif
		199
		200	#ifndef POSIX_MADV_NORMAL
		201	# define POSIX_MADV_NORMAL 0
		202	#endif
		203	#ifndef POSIX_MADV_SEQUENTIAL
		204	# define POSIX_MADV_SEQUENTIAL 0
		205	#endif
		206	#ifndef POSIX_MADV_RANDOM
		207	# define POSIX_MADV_RANDOM 0
		208	#endif
		209	#ifndef POSIX_MADV_WILLNEED
		210	# define POSIX_MADV_WILLNEED 0
		211	#endif
		212	#ifndef POSIX_MADV_DONTNEED
		213	# define POSIX_MADV_DONTNEED 0
		214	#endif
		215
		216	#if !HAVE_POSIX_MADVISE
		217	# define posix_madvise(a,b,c) errno = ENOSYS /* also return ENOSYS */
		218	#endif
		219
		220	#ifndef PROT_NONE
		221	# define PROT_NONE 0
		222	#endif
		223	#ifndef PROT_READ
		224	# define PROT_READ 0
		225	#endif
		226	#ifndef PROT_WRITE
		227	# define PROT_READ 0
		228	#endif
		229	#ifndef PROT_EXEC
		230	# define PROT_EXEC 0
		231	#endif
		232
		233	#ifndef ST_RDONLY
		234	# define ST_RDONLY 0
		235	#endif
		236	#ifndef ST_NOSUID
		237	# define ST_NOSUID 0
		238	#endif
		239	#ifndef ST_NODEV
		240	# define ST_NODEV 0
		241	#endif
		242	#ifndef ST_NOEXEC
		243	# define ST_NOEXEC 0
		244	#endif
		245	#ifndef ST_SYNCHRONOUS
		246	# define ST_SYNCHRONOUS 0
		247	#endif
		248	#ifndef ST_MANDLOCK
		249	# define ST_MANDLOCK 0
		250	#endif
		251	#ifndef ST_WRITE
		252	# define ST_WRITE 0
		253	#endif
		254	#ifndef ST_APPEND
		255	# define ST_APPEND 0
		256	#endif
		257	#ifndef ST_IMMUTABLE
		258	# define ST_IMMUTABLE 0
		259	#endif
		260	#ifndef ST_NOATIME
		261	# define ST_NOATIME 0
		262	#endif
		263	#ifndef ST_NODIRATIME
		264	# define ST_NODIRATIME 0
		265	#endif
		266	#ifndef ST_RELATIME
		267	# define ST_RELATIME 0
		268	#endif
		269
		270	#ifndef S_IFIFO
		271	# define S_IFIFO 0
		272	#endif
		273	#ifndef S_IFCHR
		274	# define S_IFCHR 0
		275	#endif
		276	#ifndef S_IFBLK
		277	# define S_IFBLK 0
		278	#endif
		279	#ifndef S_IFLNK
		280	# define S_IFLNK 0
		281	#endif
		282	#ifndef S_IFREG
		283	# define S_IFREG 0
		284	#endif
		285	#ifndef S_IFDIR
		286	# define S_IFDIR 0
		287	#endif
		288	#ifndef S_IFWHT
		289	# define S_IFWHT 0
		290	#endif
		291	#ifndef S_IFSOCK
		292	# define S_IFSOCK 0
		293	#endif
		294
		295	#ifndef MAP_ANONYMOUS
		296	# ifdef MAP_ANON
		297	# define MAP_ANONYMOUS MAP_ANON
32	# else	298	# else
33	# error sendfile support requested but not available	299	# define MAP_ANONYMOUS MAP_FIXED /* and hope this fails */
34	# endif	300	# endif
35	#endif	301	#endif
36		302	#ifndef MAP_HUGETLB
37	/* used for struct dirent, AIX doesn't provide it */	303	# define MAP_HUGETLB 0
38	#ifndef NAME_MAX
39	# define NAME_MAX 4096
40	#endif	304	#endif
		305	#ifndef MAP_LOCKED
		306	# define MAP_LOCKED 0
		307	#endif
		308	#ifndef MAP_NORESERVE
		309	# define MAP_NORESERVE 0
		310	#endif
		311	#ifndef MAP_POPULATE
		312	# define MAP_POPULATE 0
		313	#endif
		314	#ifndef MAP_NONBLOCK
		315	# define MAP_NONBLOCK 0
		316	#endif
41		317
42	#if __ia64	318	#ifndef makedev
43	# define STACKSIZE 65536	319	# define makedev(maj,min) (((maj) << 8) | (min))
44	#else	320	#endif
45	# define STACKSIZE 8192	321	#ifndef major
		322	# define major(dev) ((dev) >> 8)
		323	#endif
		324	#ifndef minor
		325	# define minor(dev) ((dev) & 0xff)
		326	#endif
		327
		328	#ifndef PAGESIZE
		329	# define PAGESIZE sysconf (_SC_PAGESIZE)
46	#endif	330	#endif
47		331
48	enum {	332	enum {
49	REQ_QUIT,	333	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
50	REQ_OPEN, REQ_CLOSE,
51	REQ_READ, REQ_WRITE, REQ_READAHEAD,
52	REQ_SENDFILE,
53	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
54	REQ_FSYNC, REQ_FDATASYNC,
55	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,
56	REQ_READDIR,
57	REQ_LINK, REQ_SYMLINK,
58	};	334	};
59		335
60	typedef struct aio_cb {
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;	336	typedef eio_req *aio_req;
		337	typedef eio_req *aio_req_ornot;
		338	typedef eio_wd aio_wd;
81		339
82	static int started, wanted;	340	static SV *on_next_submit;
83	static volatile int nreqs;	341	static int next_pri = EIO_PRI_DEFAULT;
84	static int max_outstanding = 1<<30;	342	static int max_outstanding;
85	static int respipe [2];
86		343
87	static pthread_mutex_t reslock = PTHREAD_MUTEX_INITIALIZER;	344	static s_epipe respipe;
88	static pthread_mutex_t reqlock = PTHREAD_MUTEX_INITIALIZER;
89	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;
90		345
91	static volatile aio_req reqs, reqe; /* queue start, queue end */	346	static void req_destroy (aio_req req);
92	static volatile aio_req ress, rese; /* queue start, queue end */
93
94	static void free_req (aio_req req)	347	static void req_cancel (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		348
117	static void	349	static void
118	poll_wait ()	350	want_poll (void)
119	{	351	{
120	if (nreqs && !ress)	352	/* write a dummy byte to the pipe so fh becomes ready */
		353	s_epipe_signal (&respipe);
		354	}
		355
		356	static void
		357	done_poll (void)
		358	{
		359	/* read any signals sent by the worker threads */
		360	s_epipe_drain (&respipe);
		361	}
		362
		363	/* must be called at most once */
		364	static SV *
		365	req_sv (aio_req req, HV *stash)
		366	{
		367	if (!req->self)
121	{	368	{
122	fd_set rfd;	369	req->self = (SV *)newHV ();
123	FD_ZERO(&rfd);	370	sv_magic (req->self, 0, PERL_MAGIC_ext, (char *)req, 0);
124	FD_SET(respipe [0], &rfd);
125
126	select (respipe [0] + 1, &rfd, 0, 0, 0);
127	}	371	}
		372
		373	return sv_2mortal (sv_bless (newRV_inc (req->self), stash));
		374	}
		375
		376	static SV *
		377	newSVaio_wd (aio_wd wd)
		378	{
		379	return sv_bless (newRV_noinc (newSViv ((IV)wd)), aio_wd_stash);
		380	}
		381
		382	static aio_req
		383	SvAIO_REQ (SV *sv)
		384	{
		385	MAGIC *mg;
		386
		387	if (!SvROK (sv)
		388	/* for speed reasons, we do not verify that SvROK actually has a stash ptr */
		389	|| (SvSTASH (SvRV (sv)) != aio_grp_stash
		390	&& SvSTASH (SvRV (sv)) != aio_req_stash
		391	&& !sv_derived_from (sv, "IO::AIO::REQ")))
		392	croak ("object of class IO::AIO::REQ expected");
		393
		394	mg = mg_find (SvRV (sv), PERL_MAGIC_ext);
		395
		396	return mg ? (aio_req)mg->mg_ptr : 0;
		397	}
		398
		399	static aio_wd
		400	SvAIO_WD (SV *sv)
		401	{
		402	if (!SvROK (sv)
		403	|| SvTYPE (SvRV (sv)) != SVt_PVMG
		404	|| SvSTASH (SvRV (sv)) != aio_wd_stash)
		405	croak ("IO::AIO: expected a working directory object as returned by aio_wd");
		406
		407	return (aio_wd)(long)SvIVX (SvRV (sv));
		408	}
		409
		410	static void
		411	aio_grp_feed (aio_req grp)
		412	{
		413	if (grp->sv2 && SvOK (grp->sv2))
		414	{
		415	dSP;
		416
		417	ENTER;
		418	SAVETMPS;
		419	PUSHMARK (SP);
		420	XPUSHs (req_sv (grp, aio_grp_stash));
		421	PUTBACK;
		422	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
		423	SPAGAIN;
		424	FREETMPS;
		425	LEAVE;
		426	}
		427	}
		428
		429	static void
		430	req_submit (eio_req *req)
		431	{
		432	eio_submit (req);
		433
		434	if (expect_false (on_next_submit))
		435	{
		436	dSP;
		437	SV *cb = sv_2mortal (on_next_submit);
		438
		439	on_next_submit = 0;
		440
		441	PUSHMARK (SP);
		442	PUTBACK;
		443	call_sv (cb, G_DISCARD | G_EVAL);
		444	}
128	}	445	}
129		446
130	static int	447	static int
131	poll_cb ()	448	req_invoke (eio_req *req)
132	{	449	{
133	dSP;	450	if (req->flags & FLAG_SV2_RO_OFF)
134	int count = 0;	451	SvREADONLY_off (req->sv2);
135	int do_croak = 0;
136	aio_req req;
137		452
138	for (;;)	453	if (!EIO_CANCELLED (req) && req->callback)
139	{	454	{
140	pthread_mutex_lock (&reslock);	455	dSP;
141	req = ress;	456	static SV *sv_result_cache; /* caches the result integer SV */
		457	SV *sv_result;
142		458
143	if (req)	459	ENTER;
		460	SAVETMPS;
		461	PUSHMARK (SP);
		462	EXTEND (SP, 1);
		463
		464	/* do not recreate the result IV from scratch each time */
		465	if (expect_true (sv_result_cache))
144	{	466	{
145	ress = req->next;	467	sv_result = sv_result_cache; sv_result_cache = 0;
146		468	SvIV_set (sv_result, req->result);
147	if (!ress)	469	SvIOK_only (sv_result);
148	{
149	/* read any signals sent by the worker threads */
150	char buf [32];
151	while (read (respipe [0], buf, 32) == 32)
152	;
153
154	rese = 0;
155	}
156	}
157
158	pthread_mutex_unlock (&reslock);
159
160	if (!req)
161	break;
162
163	nreqs--;
164
165	if (req->type == REQ_QUIT)
166	started--;
167	else
168	{
169	int errorno = errno;
170	errno = req->errorno;
171
172	if (req->type == REQ_READ)
173	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
174
175	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
176	SvREADONLY_off (req->data);
177
178	if (req->statdata)
179	{
180	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
181	PL_laststatval = req->result;
182	PL_statcache = *(req->statdata);
183	}
184
185	ENTER;
186	PUSHMARK (SP);
187
188	if (req->type == REQ_READDIR)
189	{
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	}
552	}
553
554	return res;
555	}
556
557	/* read a full directory */
558	static int
559	scandir_ (const char *path, void **namesp)
560	{
561	DIR *dirp = opendir (path);
562	union
563	{
564	struct dirent d;
565	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];
566	} u;
567	struct dirent *entp;
568	char *name, *names;
569	int memlen = 4096;
570	int memofs = 0;
571	int res = 0;
572	int errorno;
573
574	if (!dirp)
575	return -1;
576
577	names = malloc (memlen);
578
579	for (;;)
580	{
581	errno = 0, readdir_r (dirp, &u.d, &entp);
582
583	if (!entp)
584	break;
585
586	name = entp->d_name;
587
588	if (name [0] != '.' || (name [1] && (name [1] != '.' || name [2])))
589	{
590	int len = strlen (name) + 1;
591
592	res++;
593
594	while (memofs + len > memlen)
595	{
596	memlen *= 2;
597	names = realloc (names, memlen);
598	if (!names)
599	break;
600	}
601
602	memcpy (names + memofs, name, len);
603	memofs += len;
604	}
605	}
606
607	errorno = errno;
608	closedir (dirp);
609
610	if (errorno)
611	{
612	free (names);
613	errno = errorno;
614	res = -1;
615	}
616
617	*namesp = (void *)names;
618	return res;
619	}
620
621	/*****************************************************************************/
622
623	static void *
624	aio_proc (void *thr_arg)
625	{
626	aio_req req;
627	int type;
628
629	do
630	{
631	pthread_mutex_lock (&reqlock);
632
633	for (;;)
634	{
635	req = reqs;
636
637	if (reqs)
638	{
639	reqs = reqs->next;
640	if (!reqs) reqe = 0;
641	}
642
643	if (req)
644	break;
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	}	470	}
698	else	471	else
699	{	472	{
700	rese = ress = req;	473	sv_result = newSViv (req->result);
701		474	SvREADONLY_on (sv_result);
702	/* write a dummy byte to the pipe so fh becomes ready */
703	write (respipe [1], &respipe, 1);
704	}	475	}
705		476
706	pthread_mutex_unlock (&reslock);	477	switch (req->type)
		478	{
		479	case EIO_WD_OPEN:
		480	PUSHs (req->result ? &PL_sv_undef : sv_2mortal (newSVaio_wd (req->wd)));
		481	break;
		482
		483	case EIO_READDIR:
		484	{
		485	SV *rv = &PL_sv_undef;
		486
		487	if (req->result >= 0)
		488	{
		489	int i;
		490	char *names = (char *)req->ptr2;
		491	eio_dirent *ent = (eio_dirent *)req->ptr1; /* might be 0 */
		492	AV *av = newAV ();
		493
		494	av_extend (av, req->result - 1);
		495
		496	for (i = 0; i < req->result; ++i)
		497	{
		498	if (req->int1 & EIO_READDIR_DENTS)
		499	{
		500	SV *namesv = newSVpvn (names + ent->nameofs, ent->namelen);
		501
		502	if (req->int1 & EIO_READDIR_CUSTOM2)
		503	{
		504	static SV *sv_type [EIO_DT_MAX + 1]; /* type sv cache */
		505	AV *avent = newAV ();
		506
		507	av_extend (avent, 2);
		508
		509	if (!sv_type [ent->type])
		510	{
		511	sv_type [ent->type] = newSViv (ent->type);
		512	SvREADONLY_on (sv_type [ent->type]);
		513	}
		514
		515	av_store (avent, 0, namesv);
		516	av_store (avent, 1, SvREFCNT_inc (sv_type [ent->type]));
		517	av_store (avent, 2, IVSIZE >= 8 ? newSVuv (ent->inode) : newSVnv (ent->inode));
		518
		519	av_store (av, i, newRV_noinc ((SV *)avent));
		520	}
		521	else
		522	av_store (av, i, namesv);
		523
		524	++ent;
		525	}
		526	else
		527	{
		528	SV *name = newSVpv (names, 0);
		529	av_store (av, i, name);
		530	names += SvCUR (name) + 1;
		531	}
		532	}
		533
		534	rv = sv_2mortal (newRV_noinc ((SV *)av));
		535	}
		536
		537	PUSHs (rv);
		538
		539	if (req->int1 & EIO_READDIR_CUSTOM1)
		540	XPUSHs (sv_2mortal (newSViv (req->int1 & ~(EIO_READDIR_CUSTOM1 | EIO_READDIR_CUSTOM2))));
		541	}
		542	break;
		543
		544	case EIO_OPEN:
		545	{
		546	/* convert fd to fh */
		547	SV *fh = &PL_sv_undef;
		548
		549	if (req->result >= 0)
		550	{
		551	GV *gv = (GV *)sv_newmortal ();
		552	int flags = req->int1 & (O_RDONLY | O_WRONLY | O_RDWR);
		553	char sym [64];
		554	int symlen;
		555
		556	symlen = snprintf (sym, sizeof (sym), "fd#%d", (int)req->result);
		557	gv_init (gv, aio_stash, sym, symlen, 0);
		558
		559	symlen = snprintf (
		560	sym,
		561	sizeof (sym),
		562	"%s&=%d",
		563	flags == O_RDONLY ? "<" : flags == O_WRONLY ? ">" : "+<",
		564	(int)req->result
		565	);
		566
		567	if (do_open (gv, sym, symlen, 0, 0, 0, 0))
		568	fh = (SV *)gv;
		569	}
		570
		571	PUSHs (fh);
		572	}
		573	break;
		574
		575	case EIO_STATVFS:
		576	case EIO_FSTATVFS:
		577	{
		578	SV *rv = &PL_sv_undef;
		579
		580	#ifndef _WIN32
		581	if (req->result >= 0)
		582	{
		583	EIO_STRUCT_STATVFS *f = EIO_STATVFS_BUF (req);
		584	HV *hv = newHV ();
		585
		586	rv = sv_2mortal (newRV_noinc ((SV *)hv));
		587
		588	hv_store (hv, "bsize" , sizeof ("bsize" ) - 1, newSVval64 (f->f_bsize ), 0);
		589	hv_store (hv, "frsize" , sizeof ("frsize" ) - 1, newSVval64 (f->f_frsize ), 0);
		590	hv_store (hv, "blocks" , sizeof ("blocks" ) - 1, newSVval64 (f->f_blocks ), 0);
		591	hv_store (hv, "bfree" , sizeof ("bfree" ) - 1, newSVval64 (f->f_bfree ), 0);
		592	hv_store (hv, "bavail" , sizeof ("bavail" ) - 1, newSVval64 (f->f_bavail ), 0);
		593	hv_store (hv, "files" , sizeof ("files" ) - 1, newSVval64 (f->f_files ), 0);
		594	hv_store (hv, "ffree" , sizeof ("ffree" ) - 1, newSVval64 (f->f_ffree ), 0);
		595	hv_store (hv, "favail" , sizeof ("favail" ) - 1, newSVval64 (f->f_favail ), 0);
		596	hv_store (hv, "fsid" , sizeof ("fsid" ) - 1, newSVval64 (f->f_fsid ), 0);
		597	hv_store (hv, "flag" , sizeof ("flag" ) - 1, newSVval64 (f->f_flag ), 0);
		598	hv_store (hv, "namemax", sizeof ("namemax") - 1, newSVval64 (f->f_namemax), 0);
		599	}
		600	#endif
		601
		602	PUSHs (rv);
		603	}
		604
		605	break;
		606
		607	case EIO_GROUP:
		608	req->int1 = 2; /* mark group as finished */
		609
		610	if (req->sv1)
		611	{
		612	int i;
		613	AV *av = (AV *)req->sv1;
		614
		615	EXTEND (SP, AvFILL (av) + 1);
		616	for (i = 0; i <= AvFILL (av); ++i)
		617	PUSHs (*av_fetch (av, i, 0));
		618	}
		619	break;
		620
		621	case EIO_NOP:
		622	case EIO_BUSY:
		623	break;
		624
		625	case EIO_READLINK:
		626	case EIO_REALPATH:
		627	if (req->result > 0)
		628	PUSHs (sv_2mortal (newSVpvn (req->ptr2, req->result)));
		629	break;
		630
		631	case EIO_STAT:
		632	case EIO_LSTAT:
		633	case EIO_FSTAT:
		634	PL_laststype = req->type == EIO_LSTAT ? OP_LSTAT : OP_STAT;
		635
		636	if (!(PL_laststatval = req->result))
		637	/* if compilation fails here then perl's Stat_t is not struct _stati64 */
		638	PL_statcache = *(EIO_STRUCT_STAT *)(req->ptr2);
		639
		640	PUSHs (sv_result);
		641	break;
		642
		643	case EIO_READ:
		644	{
		645	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		646	*SvEND (req->sv2) = 0;
		647	SvPOK_only (req->sv2);
		648	SvSETMAGIC (req->sv2);
		649	PUSHs (sv_result);
		650	}
		651	break;
		652
		653	case EIO_DUP2: /* EIO_DUP2 actually means aio_close(), so fudge result value */
		654	if (req->result > 0)
		655	SvIV_set (sv_result, 0);
		656	/* FALLTHROUGH */
		657
		658	default:
		659	PUSHs (sv_result);
		660	break;
		661	}
		662
		663	errno = req->errorno;
		664
		665	PUTBACK;
		666	call_sv (req->callback, G_VOID | G_EVAL | G_DISCARD);
		667	SPAGAIN;
		668
		669	if (expect_false (SvREFCNT (sv_result) != 1 || sv_result_cache))
		670	SvREFCNT_dec (sv_result);
		671	else
		672	sv_result_cache = sv_result;
		673
		674	FREETMPS;
		675	LEAVE;
		676
		677	PUTBACK;
707	}	678	}
708	while (type != REQ_QUIT);	679
		680	return !!SvTRUE (ERRSV);
		681	}
		682
		683	static void
		684	req_destroy (aio_req req)
		685	{
		686	if (req->self)
		687	{
		688	sv_unmagic (req->self, PERL_MAGIC_ext);
		689	SvREFCNT_dec (req->self);
		690	}
		691
		692	SvREFCNT_dec (req->sv1);
		693	SvREFCNT_dec (req->sv2);
		694	SvREFCNT_dec (req->sv3);
		695	SvREFCNT_dec (req->sv4);
		696	SvREFCNT_dec (req->callback);
		697
		698	free (req);
		699	}
		700
		701	static void
		702	req_cancel_subs (aio_req grp)
		703	{
		704	if (grp->type != EIO_GROUP)
		705	return;
		706
		707	SvREFCNT_dec (grp->sv2);
		708	grp->sv2 = 0;
		709
		710	eio_grp_cancel (grp);
		711	}
		712
		713	static void ecb_cold
		714	create_respipe (void)
		715	{
		716	if (s_epipe_renew (&respipe))
		717	croak ("IO::AIO: unable to initialize result pipe");
		718	}
		719
		720	static void
		721	poll_wait (void)
		722	{
		723	while (eio_nreqs ())
		724	{
		725	int size;
		726
		727	X_LOCK (reslock);
		728	size = res_queue.size;
		729	X_UNLOCK (reslock);
		730
		731	if (size)
		732	return;
		733
		734	etp_maybe_start_thread ();
		735
		736	s_epipe_wait (&respipe);
		737	}
		738	}
		739
		740	static int
		741	poll_cb (void)
		742	{
		743	for (;;)
		744	{
		745	int res = eio_poll ();
		746
		747	if (res > 0)
		748	croak (0);
		749
		750	if (!max_outstanding || max_outstanding > eio_nreqs ())
		751	return res;
		752
		753	poll_wait ();
		754	}
		755	}
		756
		757	static void ecb_cold
		758	reinit (void)
		759	{
		760	create_respipe ();
		761
		762	if (eio_init (want_poll, done_poll) < 0)
		763	croak ("IO::AIO: unable to initialise eio library");
		764	}
		765
		766	/*****************************************************************************/
		767
		768	#if !_POSIX_MAPPED_FILES
		769	# define mmap(addr,length,prot,flags,fd,offs) (errno = ENOSYS, -1)
		770	# define munmap(addr,length) (errno = ENOSYS, -1)
		771	#endif
		772
		773	#if !_POSIX_MEMORY_PROTECTION
		774	# define mprotect(addr,len,prot) (errno = ENOSYS, -1)
		775	# define PROT_NONE 0
		776	# define PROT_WRITE 0
		777	# define MAP_PRIVATE 0
		778	# define MAP_SHARED 0
		779	# define MAP_FIXED 0
		780	#endif
		781
		782	#define MMAP_MAGIC PERL_MAGIC_ext
		783
		784	static int ecb_cold
		785	mmap_free (pTHX_ SV *sv, MAGIC *mg)
		786	{
		787	int old_errno = errno;
		788	munmap (mg->mg_ptr, (size_t)mg->mg_obj);
		789	errno = old_errno;
		790
		791	mg->mg_obj = 0; /* just in case */
		792
		793	SvREADONLY_off (sv);
		794
		795	if (SvPVX (sv) != mg->mg_ptr)
		796	croak ("ERROR: IO::AIO::mmap-mapped scalar changed location, detected");
		797
		798	SvCUR_set (sv, 0);
		799	SvPVX (sv) = 0;
		800	SvOK_off (sv);
709		801
710	return 0;	802	return 0;
711	}	803	}
712		804
		805	static MGVTBL mmap_vtbl = {
		806	0, 0, 0, 0, mmap_free
		807	};
		808
713	/*****************************************************************************/	809	/*****************************************************************************/
714		810
715	static void atfork_prepare (void)	811	static SV *
		812	get_cb (SV *cb_sv)
716	{	813	{
717	pthread_mutex_lock (&reqlock);	814	SvGETMAGIC (cb_sv);
718	pthread_mutex_lock (&reslock);	815	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	}	816	}
726		817
727	static void atfork_parent (void)	818	static aio_req ecb_noinline
		819	dreq (SV *callback)
728	{	820	{
729	#if !HAVE_READDIR_R	821	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;	822	aio_req req;
		823	int req_pri = next_pri;
		824	next_pri = EIO_PRI_DEFAULT;
742		825
743	started = 0;	826	cb_cv = get_cb (callback);
744		827
745	while (reqs)	828	req = calloc (sizeof (*req), 1);
		829	if (!req)
		830	croak ("out of memory during eio_req allocation");
		831
		832	req->callback = SvREFCNT_inc (cb_cv);
		833	req->pri = req_pri;
		834
		835	return req;
		836	}
		837
		838	#define dREQ \
		839	aio_req req = dreq (callback); \
		840
		841	#define REQ_SEND \
		842	PUTBACK; \
		843	req_submit (req); \
		844	SPAGAIN; \
		845	\
		846	if (GIMME_V != G_VOID) \
		847	XPUSHs (req_sv (req, aio_req_stash));
		848
		849	ecb_inline void
		850	req_set_path (aio_req req, SV *path, SV **wdsv, SV **pathsv, eio_wd *wd, void **ptr)
		851	{
		852	if (expect_false (SvROK (path)))
746	{	853	{
747	prv = reqs;	854	SV *rv = SvRV (path);
748	reqs = prv->next;	855	SV *wdob;
749	free_req (prv);	856
		857	if (SvTYPE (rv) == SVt_PVAV && AvFILLp (rv) == 1)
		858	{
		859	path = AvARRAY (rv)[1];
		860	wdob = AvARRAY (rv)[0];
		861
		862	if (SvOK (wdob))
		863	{
		864	*wd = SvAIO_WD (wdob);
		865	*wdsv = SvREFCNT_inc_NN (SvRV (wdob));
		866	}
		867	else
		868	*wd = EIO_INVALID_WD;
		869	}
		870	else if (SvTYPE (rv) == SVt_PVMG && SvSTASH (rv) == aio_wd_stash)
		871	{
		872	*wd = (aio_wd)(long)SvIVX (rv);
		873	*wdsv = SvREFCNT_inc_NN (rv);
		874	*ptr = ".";
		875	return; /* path set to "." */
		876	}
		877	else
		878	croak ("IO::AIO: pathname arguments must be specified as a string, an IO::AIO::WD object or a [IO::AIO::WD, path] pair");
750	}	879	}
751		880
752	reqs = reqe = 0;	881	*pathsv = newSVsv (path);
753		882	*ptr = SvPVbyte_nolen (*pathsv);
754	while (ress)	883	}
		884
		885	static void ecb_noinline
		886	req_set_path1 (aio_req req, SV *path)
		887	{
		888	req_set_path (req, path, &req->sv1, &req->sv3, &req->wd, &req->ptr1);
		889	}
		890
		891	static void ecb_noinline
		892	req_set_fh_or_path (aio_req req, int type_path, int type_fh, SV *fh_or_path)
		893	{
		894	SV *rv = SvROK (fh_or_path) ? SvRV (fh_or_path) : fh_or_path;
		895
		896	switch (SvTYPE (rv))
755	{	897	{
756	prv = ress;	898	case SVt_PVIO:
757	ress = prv->next;	899	case SVt_PVLV:
758	free_req (prv);	900	case SVt_PVGV:
		901	req->type = type_fh;
		902	req->sv1 = newSVsv (fh_or_path);
		903	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		904	break;
		905
		906	default:
		907	req->type = type_path;
		908	req_set_path1 (req, fh_or_path);
		909	break;
759	}	910	}
760
761	ress = rese = 0;
762
763	close (respipe [0]);
764	close (respipe [1]);
765	create_pipe ();
766
767	atfork_parent ();
768	}	911	}
769		912
770	#define dREQ \	913	XS(boot_IO__AIO) ecb_cold;
771	aio_req req; \	914
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	915	MODULE = IO::AIO PACKAGE = IO::AIO
783		916
784	PROTOTYPES: ENABLE	917	PROTOTYPES: ENABLE
785		918
786	BOOT:	919	BOOT:
787	{	920	{
		921	static const struct {
		922	const char *name;
		923	IV iv;
		924	} *civ, const_iv[] = {
		925	# define const_niv(name, value) { # name, (IV) value },
		926	# define const_iv(name) { # name, (IV) name },
		927	# define const_eio(name) { # name, (IV) EIO_ ## name },
		928	const_iv (EXDEV)
		929	const_iv (ENOSYS)
		930	const_iv (O_RDONLY)
		931	const_iv (O_WRONLY)
		932	const_iv (O_RDWR)
		933	const_iv (O_CREAT)
		934	const_iv (O_TRUNC)
		935	const_iv (O_EXCL)
		936	const_iv (O_APPEND)
		937
		938	const_iv (O_ASYNC)
		939	const_iv (O_DIRECT)
		940	const_iv (O_NOATIME)
		941
		942	const_iv (O_CLOEXEC)
		943	const_iv (O_NOCTTY)
		944	const_iv (O_NOFOLLOW)
		945	const_iv (O_NONBLOCK)
		946	const_iv (O_EXEC)
		947	const_iv (O_SEARCH)
		948	const_iv (O_DIRECTORY)
		949	const_iv (O_DSYNC)
		950	const_iv (O_RSYNC)
		951	const_iv (O_SYNC)
		952	const_iv (O_TTY_INIT)
		953
		954	const_iv (S_IFIFO)
		955	const_iv (S_IFCHR)
		956	const_iv (S_IFBLK)
		957	const_iv (S_IFLNK)
		958	const_iv (S_IFREG)
		959	const_iv (S_IFDIR)
		960	const_iv (S_IFWHT)
		961	const_iv (S_IFSOCK)
		962	const_iv (S_IFMT)
		963
		964	const_niv (FADV_NORMAL , POSIX_FADV_NORMAL)
		965	const_niv (FADV_SEQUENTIAL, POSIX_FADV_SEQUENTIAL)
		966	const_niv (FADV_RANDOM , POSIX_FADV_RANDOM)
		967	const_niv (FADV_NOREUSE , POSIX_FADV_NOREUSE)
		968	const_niv (FADV_WILLNEED , POSIX_FADV_WILLNEED)
		969	const_niv (FADV_DONTNEED , POSIX_FADV_DONTNEED)
		970
		971	const_niv (MADV_NORMAL , POSIX_MADV_NORMAL)
		972	const_niv (MADV_SEQUENTIAL, POSIX_MADV_SEQUENTIAL)
		973	const_niv (MADV_RANDOM , POSIX_MADV_RANDOM)
		974	const_niv (MADV_WILLNEED , POSIX_MADV_WILLNEED)
		975	const_niv (MADV_DONTNEED , POSIX_MADV_DONTNEED)
		976
		977	const_iv (ST_RDONLY)
		978	const_iv (ST_NOSUID)
		979	const_iv (ST_NODEV)
		980	const_iv (ST_NOEXEC)
		981	const_iv (ST_SYNCHRONOUS)
		982	const_iv (ST_MANDLOCK)
		983	const_iv (ST_WRITE)
		984	const_iv (ST_APPEND)
		985	const_iv (ST_IMMUTABLE)
		986	const_iv (ST_NOATIME)
		987	const_iv (ST_NODIRATIME)
		988	const_iv (ST_RELATIME)
		989
		990	const_iv (PROT_NONE)
		991	const_iv (PROT_EXEC)
		992	const_iv (PROT_READ)
		993	const_iv (PROT_WRITE)
		994
		995	/*const_iv (MAP_FIXED)*/
		996	const_iv (MAP_PRIVATE)
		997	const_iv (MAP_SHARED)
		998	const_iv (MAP_ANONYMOUS)
		999
		1000	/* linuxish */
		1001	const_iv (MAP_HUGETLB)
		1002	const_iv (MAP_LOCKED)
		1003	const_iv (MAP_NORESERVE)
		1004	const_iv (MAP_POPULATE)
		1005	const_iv (MAP_NONBLOCK)
		1006
		1007	const_eio (MCL_FUTURE)
		1008	const_eio (MCL_CURRENT)
		1009
		1010	const_eio (MS_ASYNC)
		1011	const_eio (MS_INVALIDATE)
		1012	const_eio (MS_SYNC)
		1013
		1014	const_eio (MT_MODIFY)
		1015
		1016	const_eio (SYNC_FILE_RANGE_WAIT_BEFORE)
		1017	const_eio (SYNC_FILE_RANGE_WRITE)
		1018	const_eio (SYNC_FILE_RANGE_WAIT_AFTER)
		1019
		1020	const_eio (FALLOC_FL_KEEP_SIZE)
		1021
		1022	const_eio (READDIR_DENTS)
		1023	const_eio (READDIR_DIRS_FIRST)
		1024	const_eio (READDIR_STAT_ORDER)
		1025	const_eio (READDIR_FOUND_UNKNOWN)
		1026
		1027	const_eio (DT_UNKNOWN)
		1028	const_eio (DT_FIFO)
		1029	const_eio (DT_CHR)
		1030	const_eio (DT_DIR)
		1031	const_eio (DT_BLK)
		1032	const_eio (DT_REG)
		1033	const_eio (DT_LNK)
		1034	const_eio (DT_SOCK)
		1035	const_eio (DT_WHT)
		1036	};
		1037
788	HV *stash = gv_stashpv ("IO::AIO", 1);	1038	aio_stash = gv_stashpv ("IO::AIO" , 1);
789	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1039	aio_req_stash = gv_stashpv ("IO::AIO::REQ", 1);
790	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1040	aio_grp_stash = gv_stashpv ("IO::AIO::GRP", 1);
791	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1041	aio_wd_stash = gv_stashpv ("IO::AIO::WD" , 1);
792		1042
793	create_pipe ();	1043	for (civ = const_iv + sizeof (const_iv) / sizeof (const_iv [0]); civ > const_iv; civ--)
794	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1044	newCONSTSUB (aio_stash, (char *)civ[-1].name, newSViv (civ[-1].iv));
795	}
796		1045
		1046	newCONSTSUB (aio_stash, "PAGESIZE", newSViv (PAGESIZE));
		1047
		1048	reinit ();
		1049	}
		1050
797	void	1051	void
798	min_parallel (nthreads)	1052	reinit ()
799	int nthreads	1053	PROTOTYPE:
		1054
		1055	void
		1056	max_poll_reqs (unsigned int nreqs)
800	PROTOTYPE: $	1057	PROTOTYPE: $
		1058	CODE:
		1059	eio_set_max_poll_reqs (nreqs);
801		1060
802	void	1061	void
803	max_parallel (nthreads)	1062	max_poll_time (double nseconds)
804	int nthreads
805	PROTOTYPE: $	1063	PROTOTYPE: $
806
807	int
808	max_outstanding (nreqs)
809	int nreqs
810	PROTOTYPE: $
811	CODE:	1064	CODE:
812	RETVAL = max_outstanding;	1065	eio_set_max_poll_time (nseconds);
		1066
		1067	void
		1068	min_parallel (unsigned int nthreads)
		1069	PROTOTYPE: $
		1070	CODE:
		1071	eio_set_min_parallel (nthreads);
		1072
		1073	void
		1074	max_parallel (unsigned int nthreads)
		1075	PROTOTYPE: $
		1076	CODE:
		1077	eio_set_max_parallel (nthreads);
		1078
		1079	void
		1080	max_idle (unsigned int nthreads)
		1081	PROTOTYPE: $
		1082	CODE:
		1083	eio_set_max_idle (nthreads);
		1084
		1085	void
		1086	idle_timeout (unsigned int seconds)
		1087	PROTOTYPE: $
		1088	CODE:
		1089	eio_set_idle_timeout (seconds);
		1090
		1091	void
		1092	max_outstanding (unsigned int maxreqs)
		1093	PROTOTYPE: $
		1094	CODE:
813	max_outstanding = nreqs;	1095	max_outstanding = maxreqs;
814		1096
815	void	1097	void
816	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1098	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:	1099	PPCODE:
823	{	1100	{
824	dREQ;	1101	dREQ;
825		1102
		1103	req->type = EIO_WD_OPEN;
		1104	req_set_path1 (req, pathname);
		1105
		1106	REQ_SEND;
		1107	}
		1108
		1109	void
		1110	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
		1111	PPCODE:
		1112	{
		1113	dREQ;
		1114
826	req->type = REQ_OPEN;	1115	req->type = EIO_OPEN;
827	req->data = newSVsv (pathname);	1116	req_set_path1 (req, pathname);
828	req->dataptr = SvPVbyte_nolen (req->data);
829	req->fd = flags;	1117	req->int1 = flags;
830	req->mode = mode;	1118	req->int2 = mode;
831		1119
832	send_req (req);	1120	REQ_SEND;
833	}	1121	}
834		1122
835	void	1123	void
836	aio_close (fh,callback=&PL_sv_undef)	1124	aio_fsync (SV *fh, SV *callback=&PL_sv_undef)
837	SV * fh
838	SV * callback
839	PROTOTYPE: $;$
840	ALIAS:	1125	ALIAS:
841	aio_close = REQ_CLOSE
842	aio_fsync = REQ_FSYNC	1126	aio_fsync = EIO_FSYNC
843	aio_fdatasync = REQ_FDATASYNC	1127	aio_fdatasync = EIO_FDATASYNC
		1128	aio_syncfs = EIO_SYNCFS
844	CODE:	1129	PPCODE:
845	{	1130	{
		1131	int fd = s_fileno_croak (fh, 0);
846	dREQ;	1132	dREQ;
847		1133
848	req->type = ix;	1134	req->type = ix;
849	req->fh = newSVsv (fh);	1135	req->sv1 = newSVsv (fh);
850	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1136	req->int1 = fd;
851		1137
852	send_req (req);	1138	REQ_SEND (req);
853	}	1139	}
854		1140
855	void	1141	void
		1142	aio_sync_file_range (SV *fh, off_t offset, size_t nbytes, UV flags, SV *callback=&PL_sv_undef)
		1143	PPCODE:
		1144	{
		1145	int fd = s_fileno_croak (fh, 0);
		1146	dREQ;
		1147
		1148	req->type = EIO_SYNC_FILE_RANGE;
		1149	req->sv1 = newSVsv (fh);
		1150	req->int1 = fd;
		1151	req->offs = offset;
		1152	req->size = nbytes;
		1153	req->int2 = flags;
		1154
		1155	REQ_SEND (req);
		1156	}
		1157
		1158	void
		1159	aio_fallocate (SV *fh, int mode, off_t offset, size_t len, SV *callback=&PL_sv_undef)
		1160	PPCODE:
		1161	{
		1162	int fd = s_fileno_croak (fh, 0);
		1163	dREQ;
		1164
		1165	req->type = EIO_FALLOCATE;
		1166	req->sv1 = newSVsv (fh);
		1167	req->int1 = fd;
		1168	req->int2 = mode;
		1169	req->offs = offset;
		1170	req->size = len;
		1171
		1172	REQ_SEND (req);
		1173	}
		1174
		1175	void
		1176	aio_close (SV *fh, SV *callback=&PL_sv_undef)
		1177	PPCODE:
		1178	{
		1179	static int close_fd = -1; /* dummy fd to close fds via dup2 */
		1180	int fd = s_fileno_croak (fh, 0);
		1181	dREQ;
		1182
		1183	if (expect_false (close_fd < 0))
		1184	{
		1185	int pipefd [2];
		1186
		1187	if (
		1188	#ifdef _WIN32
		1189	_pipe (pipefd, 1, _O_BINARY) < 0
		1190	#else
		1191	pipe (pipefd) < 0
		1192	|| fcntl (pipefd [0], F_SETFD, FD_CLOEXEC) < 0
		1193	#endif
		1194	|| close (pipefd [1]) < 0
		1195	)
		1196	abort (); /*D*/
		1197
		1198	close_fd = pipefd [0];
		1199	}
		1200
		1201	req->type = EIO_DUP2;
		1202	req->int1 = close_fd;
		1203	req->sv2 = newSVsv (fh);
		1204	req->int2 = fd;
		1205
		1206	REQ_SEND (req);
		1207	}
		1208
		1209	void
856	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1210	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:	1211	ALIAS:
864	aio_read = REQ_READ	1212	aio_read = EIO_READ
865	aio_write = REQ_WRITE	1213	aio_write = EIO_WRITE
866	PROTOTYPE: $$$$$;$
867	CODE:	1214	PPCODE:
868	{	1215	{
869	aio_req req;
870	STRLEN svlen;	1216	STRLEN svlen;
		1217	int fd = s_fileno_croak (fh, ix == EIO_WRITE);
871	char *svptr = SvPVbyte (data, svlen);	1218	char *svptr = SvPVbyte (data, svlen);
872		1219	UV len = SvUV (length);
873	SvUPGRADE (data, SVt_PV);
874	SvPOK_on (data);
875		1220
876	if (dataoffset < 0)	1221	if (dataoffset < 0)
877	dataoffset += svlen;	1222	dataoffset += svlen;
878		1223
879	if (dataoffset < 0 || dataoffset > svlen)	1224	if (dataoffset < 0 || dataoffset > svlen)
880	croak ("data offset outside of string");	1225	croak ("dataoffset outside of data scalar");
881		1226
882	if (ix == REQ_WRITE)	1227	if (ix == EIO_WRITE)
883	{	1228	{
884	/* write: check length and adjust. */	1229	/* write: check length and adjust. */
885	if (length < 0 || length + dataoffset > svlen)	1230	if (!SvOK (length) || len + dataoffset > svlen)
886	length = svlen - dataoffset;	1231	len = svlen - dataoffset;
887	}	1232	}
888	else	1233	else
889	{	1234	{
890	/* read: grow scalar as necessary */	1235	/* read: check type and grow scalar as necessary */
		1236	SvUPGRADE (data, SVt_PV);
891	svptr = SvGROW (data, length + dataoffset);	1237	svptr = SvGROW (data, len + dataoffset + 1);
892	}	1238	}
893
894	if (length < 0)
895	croak ("length must not be negative");
896		1239
897	{	1240	{
898	dREQ;	1241	dREQ;
899		1242
900	req->type = ix;	1243	req->type = ix;
901	req->fh = newSVsv (fh);	1244	req->sv1 = newSVsv (fh);
902	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1245	req->int1 = fd;
903	: IoOFP (sv_2io (fh)));	1246	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
904	req->offset = offset;	1247	req->size = len;
905	req->length = length;
906	req->data = SvREFCNT_inc (data);	1248	req->sv2 = SvREFCNT_inc (data);
907	req->dataptr = (char *)svptr + dataoffset;	1249	req->ptr2 = (char *)svptr + dataoffset;
		1250	req->stroffset = dataoffset;
908		1251
909	if (!SvREADONLY (data))	1252	if (!SvREADONLY (data))
910	{	1253	{
911	SvREADONLY_on (data);	1254	SvREADONLY_on (data);
912	req->data2ptr = (void *)data;	1255	req->flags |= FLAG_SV2_RO_OFF;
913	}	1256	}
914		1257
915	send_req (req);	1258	REQ_SEND;
916	}	1259	}
917	}	1260	}
918		1261
919	void	1262	void
920	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1263	aio_readlink (SV8 *pathname, SV *callback=&PL_sv_undef)
921	SV * out_fh	1264	ALIAS:
922	SV * in_fh	1265	aio_readlink = EIO_READLINK
923	UV in_offset	1266	aio_realpath = EIO_REALPATH
924	UV length
925	SV * callback
926	PROTOTYPE: $$$$;$
927	CODE:	1267	PPCODE:
928	{	1268	{
		1269	dREQ;
		1270
		1271	req->type = ix;
		1272	req_set_path1 (req, pathname);
		1273
		1274	REQ_SEND;
		1275	}
		1276
		1277	void
		1278	aio_sendfile (SV *out_fh, SV *in_fh, off_t in_offset, size_t length, SV *callback=&PL_sv_undef)
		1279	PPCODE:
		1280	{
		1281	int ifd = s_fileno_croak (in_fh , 0);
		1282	int ofd = s_fileno_croak (out_fh, 1);
929	dREQ;	1283	dREQ;
930		1284
931	req->type = REQ_SENDFILE;	1285	req->type = EIO_SENDFILE;
932	req->fh = newSVsv (out_fh);	1286	req->sv1 = newSVsv (out_fh);
933	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1287	req->int1 = ofd;
934	req->fh2 = newSVsv (in_fh);	1288	req->sv2 = newSVsv (in_fh);
935	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1289	req->int2 = ifd;
936	req->offset = in_offset;	1290	req->offs = in_offset;
937	req->length = length;	1291	req->size = length;
938		1292
939	send_req (req);	1293	REQ_SEND;
940	}	1294	}
941		1295
942	void	1296	void
943	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1297	aio_readahead (SV *fh, off_t offset, size_t length, SV *callback=&PL_sv_undef)
944	SV * fh
945	UV offset
946	IV length
947	SV * callback
948	PROTOTYPE: $$$;$
949	CODE:	1298	PPCODE:
950	{	1299	{
		1300	int fd = s_fileno_croak (fh, 0);
951	dREQ;	1301	dREQ;
952		1302
953	req->type = REQ_READAHEAD;	1303	req->type = EIO_READAHEAD;
954	req->fh = newSVsv (fh);	1304	req->sv1 = newSVsv (fh);
955	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1305	req->int1 = fd;
956	req->offset = offset;	1306	req->offs = offset;
957	req->length = length;	1307	req->size = length;
958		1308
959	send_req (req);	1309	REQ_SEND;
960	}	1310	}
961		1311
962	void	1312	void
963	aio_stat (fh_or_path,callback=&PL_sv_undef)	1313	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
964	SV * fh_or_path
965	SV * callback
966	ALIAS:	1314	ALIAS:
967	aio_stat = REQ_STAT	1315	aio_stat = EIO_STAT
968	aio_lstat = REQ_LSTAT	1316	aio_lstat = EIO_LSTAT
		1317	aio_statvfs = EIO_STATVFS
		1318	PPCODE:
		1319	{
		1320	dREQ;
		1321
		1322	req_set_fh_or_path (req, ix, ix == EIO_STATVFS ? EIO_FSTATVFS : EIO_FSTAT, fh_or_path);
		1323
		1324	REQ_SEND;
		1325	}
		1326
		1327	UV
		1328	major (UV dev)
		1329	ALIAS:
		1330	minor = 1
969	CODE:	1331	CODE:
		1332	RETVAL = ix ? major (dev) : minor (dev);
		1333	OUTPUT:
		1334	RETVAL
		1335
		1336	UV
		1337	makedev (UV maj, UV min)
		1338	CODE:
		1339	RETVAL = makedev (maj, min);
		1340	OUTPUT:
		1341	RETVAL
		1342
		1343	void
		1344	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1345	PPCODE:
970	{	1346	{
971	dREQ;	1347	dREQ;
972		1348
973	New (0, req->statdata, 1, Stat_t);	1349	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
974	if (!req->statdata)	1350	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
975	{	1351	req_set_fh_or_path (req, EIO_UTIME, EIO_FUTIME, fh_or_path);
976	free_req (req);
977	croak ("out of memory during aio_req->statdata allocation");
978	}
979		1352
980	if (SvPOK (fh_or_path))	1353	REQ_SEND;
981	{
982	req->type = ix;
983	req->data = newSVsv (fh_or_path);
984	req->dataptr = SvPVbyte_nolen (req->data);
985	}
986	else
987	{
988	req->type = REQ_FSTAT;
989	req->fh = newSVsv (fh_or_path);
990	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
991	}
992
993	send_req (req);
994	}	1354	}
995		1355
996	void	1356	void
		1357	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1358	PPCODE:
		1359	{
		1360	dREQ;
		1361
		1362	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1363	req_set_fh_or_path (req, EIO_TRUNCATE, EIO_FTRUNCATE, fh_or_path);
		1364
		1365	REQ_SEND;
		1366	}
		1367
		1368	void
		1369	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1370	PPCODE:
		1371	{
		1372	dREQ;
		1373
		1374	req->int2 = mode;
		1375	req_set_fh_or_path (req, EIO_CHMOD, EIO_FCHMOD, fh_or_path);
		1376
		1377	REQ_SEND;
		1378	}
		1379
		1380	void
		1381	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1382	PPCODE:
		1383	{
		1384	dREQ;
		1385
		1386	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1387	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1388	req_set_fh_or_path (req, EIO_CHOWN, EIO_FCHOWN, fh_or_path);
		1389
		1390	REQ_SEND;
		1391	}
		1392
		1393	void
		1394	aio_readdirx (SV8 *pathname, IV flags, SV *callback=&PL_sv_undef)
		1395	PPCODE:
		1396	{
		1397	dREQ;
		1398
		1399	req->type = EIO_READDIR;
		1400	req->int1 = flags | EIO_READDIR_DENTS | EIO_READDIR_CUSTOM1;
		1401
		1402	if (flags & EIO_READDIR_DENTS)
		1403	req->int1 |= EIO_READDIR_CUSTOM2;
		1404
		1405	req_set_path1 (req, pathname);
		1406
		1407	REQ_SEND;
		1408	}
		1409
		1410	void
		1411	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1412	PPCODE:
		1413	{
		1414	dREQ;
		1415
		1416	req->type = EIO_MKDIR;
		1417	req->int2 = mode;
		1418	req_set_path1 (req, pathname);
		1419
		1420	REQ_SEND;
		1421	}
		1422
		1423	void
997	aio_unlink (pathname,callback=&PL_sv_undef)	1424	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
998	SV * pathname
999	SV * callback
1000	ALIAS:	1425	ALIAS:
1001	aio_unlink = REQ_UNLINK	1426	aio_unlink = EIO_UNLINK
1002	aio_rmdir = REQ_RMDIR	1427	aio_rmdir = EIO_RMDIR
1003	aio_readdir = REQ_READDIR	1428	aio_readdir = EIO_READDIR
1004	CODE:	1429	PPCODE:
1005	{	1430	{
1006	dREQ;	1431	dREQ;
1007		1432
1008	req->type = ix;	1433	req->type = ix;
1009	req->data = newSVsv (pathname);	1434	req_set_path1 (req, pathname);
1010	req->dataptr = SvPVbyte_nolen (req->data);
1011
1012	send_req (req);
1013	}
1014		1435
		1436	REQ_SEND;
		1437	}
		1438
1015	void	1439	void
1016	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1440	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1017	SV * oldpath
1018	SV * newpath
1019	SV * callback
1020	ALIAS:	1441	ALIAS:
1021	aio_link = REQ_LINK	1442	aio_link = EIO_LINK
1022	aio_symlink = REQ_SYMLINK	1443	aio_symlink = EIO_SYMLINK
1023	aio_rename = REQ_RENAME	1444	aio_rename = EIO_RENAME
1024	CODE:	1445	PPCODE:
1025	{	1446	{
		1447	eio_wd wd2 = 0;
1026	dREQ;	1448	dREQ;
1027		1449
1028	req->type = ix;	1450	req->type = ix;
1029	req->fh = newSVsv (oldpath);	1451	req_set_path1 (req, oldpath);
1030	req->data2ptr = SvPVbyte_nolen (req->fh);	1452	req_set_path (req, newpath, &req->sv2, &req->sv4, &wd2, &req->ptr2);
1031	req->data = newSVsv (newpath);	1453	req->int3 = (long)wd2;
1032	req->dataptr = SvPVbyte_nolen (req->data);
1033		1454
1034	send_req (req);	1455	REQ_SEND;
1035	}	1456	}
1036		1457
1037	#if 0
1038
1039	# undocumented, because it does not cancel active requests
1040	void	1458	void
1041	cancel_most_requests ()	1459	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1042	PROTOTYPE:	1460	PPCODE:
		1461	{
		1462	dREQ;
		1463
		1464	req->type = EIO_MKNOD;
		1465	req->int2 = (mode_t)mode;
		1466	req->offs = dev;
		1467	req_set_path1 (req, pathname);
		1468
		1469	REQ_SEND;
		1470	}
		1471
		1472	void
		1473	aio_mtouch (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, int flags = 0, SV *callback=&PL_sv_undef)
		1474	ALIAS:
		1475	aio_mtouch = EIO_MTOUCH
		1476	aio_msync = EIO_MSYNC
1043	CODE:	1477	PPCODE:
1044	{	1478	{
1045	aio_req *req;	1479	STRLEN svlen;
		1480	char *svptr = SvPVbyte (data, svlen);
		1481	UV len = SvUV (length);
1046		1482
1047	pthread_mutex_lock (&reqlock);	1483	if (offset < 0)
1048	for (req = reqs; req; req = req->next)	1484	offset += svlen;
1049	req->flags |= 1;
1050	pthread_mutex_unlock (&reqlock);
1051		1485
1052	pthread_mutex_lock (&reslock);	1486	if (offset < 0 || offset > svlen)
1053	for (req = ress; req; req = req->next)	1487	croak ("offset outside of scalar");
1054	req->flags |= 1;
1055	pthread_mutex_unlock (&reslock);
1056	}
1057		1488
1058	#endif	1489	if (!SvOK (length) || len + offset > svlen)
		1490	len = svlen - offset;
		1491
		1492	{
		1493	dREQ;
		1494
		1495	req->type = ix;
		1496	req->sv2 = SvREFCNT_inc (data);
		1497	req->ptr2 = (char *)svptr + offset;
		1498	req->size = len;
		1499	req->int1 = flags;
		1500
		1501	REQ_SEND;
		1502	}
		1503	}
		1504
		1505	void
		1506	aio_mlock (SV8 *data, IV offset = 0, SV *length = &PL_sv_undef, SV *callback=&PL_sv_undef)
		1507	PPCODE:
		1508	{
		1509	STRLEN svlen;
		1510	char *svptr = SvPVbyte (data, svlen);
		1511	UV len = SvUV (length);
		1512
		1513	if (offset < 0)
		1514	offset += svlen;
		1515
		1516	if (offset < 0 || offset > svlen)
		1517	croak ("offset outside of scalar");
		1518
		1519	if (!SvOK (length) || len + offset > svlen)
		1520	len = svlen - offset;
		1521
		1522	{
		1523	dREQ;
		1524
		1525	req->type = EIO_MLOCK;
		1526	req->sv2 = SvREFCNT_inc (data);
		1527	req->ptr2 = (char *)svptr + offset;
		1528	req->size = len;
		1529
		1530	REQ_SEND;
		1531	}
		1532	}
		1533
		1534	void
		1535	aio_mlockall (IV flags, SV *callback=&PL_sv_undef)
		1536	PPCODE:
		1537	{
		1538	dREQ;
		1539
		1540	req->type = EIO_MLOCKALL;
		1541	req->int1 = flags;
		1542
		1543	REQ_SEND;
		1544	}
		1545
		1546	void
		1547	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1548	PPCODE:
		1549	{
		1550	dREQ;
		1551
		1552	req->type = EIO_BUSY;
		1553	req->nv1 = delay < 0. ? 0. : delay;
		1554
		1555	REQ_SEND;
		1556	}
		1557
		1558	void
		1559	aio_group (SV *callback=&PL_sv_undef)
		1560	PPCODE:
		1561	{
		1562	dREQ;
		1563
		1564	req->type = EIO_GROUP;
		1565
		1566	req_submit (req);
		1567	XPUSHs (req_sv (req, aio_grp_stash));
		1568	}
		1569
		1570	void
		1571	aio_nop (SV *callback=&PL_sv_undef)
		1572	ALIAS:
		1573	aio_nop = EIO_NOP
		1574	aio_sync = EIO_SYNC
		1575	PPCODE:
		1576	{
		1577	dREQ;
		1578
		1579	req->type = ix;
		1580
		1581	REQ_SEND;
		1582	}
		1583
		1584	int
		1585	aioreq_pri (int pri = 0)
		1586	CODE:
		1587	RETVAL = next_pri;
		1588	if (items > 0)
		1589	{
		1590	if (pri < EIO_PRI_MIN) pri = EIO_PRI_MIN;
		1591	if (pri > EIO_PRI_MAX) pri = EIO_PRI_MAX;
		1592	next_pri = pri;
		1593	}
		1594	OUTPUT:
		1595	RETVAL
		1596
		1597	void
		1598	aioreq_nice (int nice = 0)
		1599	CODE:
		1600	nice = next_pri - nice;
		1601	if (nice < EIO_PRI_MIN) nice = EIO_PRI_MIN;
		1602	if (nice > EIO_PRI_MAX) nice = EIO_PRI_MAX;
		1603	next_pri = nice;
1059		1604
1060	void	1605	void
1061	flush ()	1606	flush ()
1062	PROTOTYPE:
1063	CODE:	1607	CODE:
1064	while (nreqs)	1608	while (eio_nreqs ())
1065	{	1609	{
1066	poll_wait ();	1610	poll_wait ();
1067	poll_cb ();	1611	poll_cb ();
1068	}	1612	}
1069		1613
1070	void	1614	int
1071	poll()	1615	poll ()
1072	PROTOTYPE:
1073	CODE:	1616	CODE:
1074	if (nreqs)
1075	{
1076	poll_wait ();	1617	poll_wait ();
1077	poll_cb ();	1618	RETVAL = poll_cb ();
1078	}
1079
1080	int
1081	poll_fileno()
1082	PROTOTYPE:
1083	CODE:
1084	RETVAL = respipe [0];
1085	OUTPUT:	1619	OUTPUT:
1086	RETVAL	1620	RETVAL
1087		1621
1088	int	1622	int
		1623	poll_fileno ()
		1624	CODE:
		1625	RETVAL = s_epipe_fd (&respipe);
		1626	OUTPUT:
		1627	RETVAL
		1628
		1629	int
1089	poll_cb(...)	1630	poll_cb (...)
1090	PROTOTYPE:	1631	PROTOTYPE:
1091	CODE:	1632	CODE:
1092	RETVAL = poll_cb ();	1633	RETVAL = poll_cb ();
1093	OUTPUT:	1634	OUTPUT:
1094	RETVAL	1635	RETVAL
1095		1636
1096	void	1637	void
1097	poll_wait()	1638	poll_wait ()
1098	PROTOTYPE:
1099	CODE:	1639	CODE:
1100	if (nreqs)
1101	poll_wait ();	1640	poll_wait ();
1102		1641
1103	int	1642	int
1104	nreqs()	1643	nreqs ()
1105	PROTOTYPE:
1106	CODE:	1644	CODE:
1107	RETVAL = nreqs;	1645	RETVAL = eio_nreqs ();
1108	OUTPUT:	1646	OUTPUT:
1109	RETVAL	1647	RETVAL
1110		1648
		1649	int
		1650	nready ()
		1651	CODE:
		1652	RETVAL = eio_nready ();
		1653	OUTPUT:
		1654	RETVAL
		1655
		1656	int
		1657	npending ()
		1658	CODE:
		1659	RETVAL = eio_npending ();
		1660	OUTPUT:
		1661	RETVAL
		1662
		1663	int
		1664	nthreads ()
		1665	CODE:
		1666	RETVAL = eio_nthreads ();
		1667	OUTPUT:
		1668	RETVAL
		1669
		1670	int
		1671	fadvise (aio_rfd fh, off_t offset, off_t length, IV advice)
		1672	CODE:
		1673	RETVAL = posix_fadvise (fh, offset, length, advice);
		1674	OUTPUT:
		1675	RETVAL
		1676
		1677	IV
		1678	sendfile (aio_wfd ofh, aio_rfd ifh, off_t offset, size_t count)
		1679	CODE:
		1680	RETVAL = eio_sendfile_sync (ofh, ifh, offset, count);
		1681	OUTPUT:
		1682	RETVAL
		1683
		1684	void
		1685	mmap (SV *scalar, size_t length, int prot, int flags, SV *fh, off_t offset = 0)
		1686	PPCODE:
		1687	sv_unmagic (scalar, MMAP_MAGIC);
		1688	{
		1689	int fd = SvOK (fh) ? s_fileno_croak (fh, flags & PROT_WRITE) : -1;
		1690	void *addr = (void *)mmap (0, length, prot, flags, fd, offset);
		1691	if (addr == (void *)-1)
		1692	XSRETURN_NO;
		1693
		1694	sv_force_normal (scalar);
		1695
		1696	/* we store the length in mg_obj, as namlen is I32 :/ */
		1697	sv_magicext (scalar, 0, MMAP_MAGIC, &mmap_vtbl, (char *)addr, 0)
		1698	->mg_obj = (SV *)length;
		1699
		1700	SvUPGRADE (scalar, SVt_PV); /* nop... */
		1701
		1702	if (!(prot & PROT_WRITE))
		1703	SvREADONLY_on (scalar);
		1704
		1705	if (SvLEN (scalar))
		1706	Safefree (SvPVX (scalar));
		1707
		1708	SvPVX (scalar) = (char *)addr;
		1709	SvCUR_set (scalar, length);
		1710	SvLEN_set (scalar, 0);
		1711	SvPOK_only (scalar);
		1712
		1713	XSRETURN_YES;
		1714	}
		1715
		1716	void
		1717	munmap (SV *scalar)
		1718	CODE:
		1719	sv_unmagic (scalar, MMAP_MAGIC);
		1720
		1721	int
		1722	madvise (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef, IV advice_or_prot)
		1723	ALIAS:
		1724	mprotect = 1
		1725	CODE:
		1726	{
		1727	STRLEN svlen;
		1728	void *addr = SvPVbyte (scalar, svlen);
		1729	size_t len = SvUV (length);
		1730
		1731	if (offset < 0)
		1732	offset += svlen;
		1733
		1734	if (offset < 0 || offset > svlen)
		1735	croak ("offset outside of scalar");
		1736
		1737	if (!SvOK (length) || len + offset > svlen)
		1738	len = svlen - offset;
		1739
		1740	addr = (void *)(((intptr_t)addr) + offset);
		1741	eio_page_align (&addr, &len);
		1742
		1743	switch (ix)
		1744	{
		1745	case 0: RETVAL = posix_madvise (addr, len, advice_or_prot); break;
		1746	case 1: RETVAL = mprotect (addr, len, advice_or_prot); break;
		1747	}
		1748	}
		1749	OUTPUT:
		1750	RETVAL
		1751
		1752	int
		1753	munlock (SV *scalar, off_t offset = 0, SV *length = &PL_sv_undef)
		1754	CODE:
		1755	{
		1756	STRLEN svlen;
		1757	void *addr = SvPVbyte (scalar, svlen);
		1758	size_t len = SvUV (length);
		1759
		1760	if (offset < 0)
		1761	offset += svlen;
		1762
		1763	if (offset < 0 || offset > svlen)
		1764	croak ("offset outside of scalar");
		1765
		1766	if (!SvOK (length) || len + offset > svlen)
		1767	len = svlen - offset;
		1768
		1769	addr = (void *)(((intptr_t)addr) + offset);
		1770	eio_page_align (&addr, &len);
		1771	#if _POSIX_MEMLOCK_RANGE
		1772	RETVAL = munlock (addr, len);
		1773	#else
		1774	RETVAL = ((errno = ENOSYS), -1);
		1775	#endif
		1776	}
		1777	OUTPUT:
		1778	RETVAL
		1779
		1780	int
		1781	munlockall ()
		1782	CODE:
		1783	#if _POSIX_MEMLOCK
		1784	munlockall ();
		1785	#else
		1786	RETVAL = -1;
		1787	errno = ENOSYS;
		1788	#endif
		1789	OUTPUT:
		1790	RETVAL
		1791
		1792	void _on_next_submit (SV *cb)
		1793	CODE:
		1794	SvREFCNT_dec (on_next_submit);
		1795	on_next_submit = SvOK (cb) ? newSVsv (cb) : 0;
		1796
		1797	PROTOTYPES: DISABLE
		1798
		1799	MODULE = IO::AIO PACKAGE = IO::AIO::WD
		1800
		1801	BOOT:
		1802	{
		1803	newCONSTSUB (aio_stash, "CWD" , newSVaio_wd (EIO_CWD ));
		1804	newCONSTSUB (aio_stash, "INVALID_WD", newSVaio_wd (EIO_INVALID_WD));
		1805	}
		1806
		1807	void
		1808	DESTROY (SV *self)
		1809	CODE:
		1810	{
		1811	aio_wd wd = SvAIO_WD (self);
		1812	#if HAVE_AT
		1813	{
		1814	SV *callback = &PL_sv_undef;
		1815	dREQ; /* clobbers next_pri :/ */
		1816	next_pri = req->pri; /* restore next_pri */
		1817	req->pri = EIO_PRI_MAX; /* better use max. priority to conserve fds */
		1818	req->type = EIO_WD_CLOSE;
		1819	req->wd = wd;
		1820	REQ_SEND;
		1821	}
		1822	#else
		1823	eio_wd_close_sync (wd);
		1824	#endif
		1825	}
		1826
		1827	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
		1828
		1829	void
		1830	cancel (aio_req_ornot req)
		1831	CODE:
		1832	eio_cancel (req);
		1833
		1834	void
		1835	cb (aio_req_ornot req, SV *callback=&PL_sv_undef)
		1836	PPCODE:
		1837	{
		1838	if (GIMME_V != G_VOID)
		1839	XPUSHs (req->callback ? sv_2mortal (newRV_inc (req->callback)) : &PL_sv_undef);
		1840
		1841	if (items > 1)
		1842	{
		1843	SV *cb_cv =get_cb (callback);
		1844
		1845	SvREFCNT_dec (req->callback);
		1846	req->callback = SvREFCNT_inc (cb_cv);
		1847	}
		1848	}
		1849
		1850	MODULE = IO::AIO PACKAGE = IO::AIO::GRP
		1851
		1852	void
		1853	add (aio_req grp, ...)
		1854	PPCODE:
		1855	{
		1856	int i;
		1857
		1858	if (grp->int1 == 2)
		1859	croak ("cannot add requests to IO::AIO::GRP after the group finished");
		1860
		1861	for (i = 1; i < items; ++i )
		1862	{
		1863	aio_req req;
		1864
		1865	if (GIMME_V != G_VOID)
		1866	XPUSHs (sv_2mortal (newSVsv (ST (i))));
		1867
		1868	req = SvAIO_REQ (ST (i));
		1869
		1870	if (req)
		1871	eio_grp_add (grp, req);
		1872	}
		1873	}
		1874
		1875	void
		1876	cancel_subs (aio_req_ornot req)
		1877	CODE:
		1878	req_cancel_subs (req);
		1879
		1880	void
		1881	result (aio_req grp, ...)
		1882	CODE:
		1883	{
		1884	int i;
		1885	AV *av;
		1886
		1887	grp->errorno = errno;
		1888
		1889	av = newAV ();
		1890	av_extend (av, items - 1);
		1891
		1892	for (i = 1; i < items; ++i )
		1893	av_push (av, newSVsv (ST (i)));
		1894
		1895	SvREFCNT_dec (grp->sv1);
		1896	grp->sv1 = (SV *)av;
		1897	}
		1898
		1899	void
		1900	errno (aio_req grp, int errorno = errno)
		1901	CODE:
		1902	grp->errorno = errorno;
		1903
		1904	void
		1905	limit (aio_req grp, int limit)
		1906	CODE:
		1907	eio_grp_limit (grp, limit);
		1908
		1909	void
		1910	feed (aio_req grp, SV *callback=&PL_sv_undef)
		1911	CODE:
		1912	{
		1913	SvREFCNT_dec (grp->sv2);
		1914	grp->sv2 = newSVsv (callback);
		1915	grp->feed = aio_grp_feed;
		1916
		1917	if (grp->int2 <= 0)
		1918	grp->int2 = 2;
		1919
		1920	eio_grp_limit (grp, grp->int2);
		1921	}
		1922

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