1 /* Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
26 /* Extend the operation enum. */
29 LIO_DSYNC
= LIO_READ
+ 1,
31 LIO_READ64
= LIO_READ
| 128,
32 LIO_WRITE64
= LIO_WRITE
| 128
36 /* Union of the two request types. */
40 struct aiocb64 aiocb64
;
44 /* Used to synchronize. */
47 struct waitlist
*next
;
50 volatile int *counterp
;
51 /* The next field is used in asynchronous `lio_listio' operations. */
52 struct sigevent
*sigevp
;
53 /* XXX See requestlist, it's used to work around the broken signal
59 /* Status of a request. */
69 /* Used to queue requests.. */
74 struct requestlist
*last_fd
;
75 struct requestlist
*next_fd
;
76 struct requestlist
*next_prio
;
77 struct requestlist
*next_run
;
79 /* Pointer to the actual data. */
82 /* PID of the initiator thread.
83 XXX This is only necessary for the broken signal handling on Linux. */
86 /* List of waiting processes. */
87 struct waitlist
*waiting
;
91 /* Lock for global I/O list of requests. */
92 extern pthread_mutex_t __aio_requests_mutex
;
95 /* Enqueue request. */
96 extern struct requestlist
*__aio_enqueue_request (aiocb_union
*aiocbp
,
100 /* Find request entry for given AIO control block. */
101 extern struct requestlist
*__aio_find_req (aiocb_union
*elem
)
104 /* Find request entry for given file descriptor. */
105 extern struct requestlist
*__aio_find_req_fd (int fildes
) internal_function
;
107 /* Remove request from the list. */
108 extern void __aio_remove_request (struct requestlist
*last
,
109 struct requestlist
*req
, int all
)
112 /* Release the entry for the request. */
113 extern void __aio_free_request (struct requestlist
*req
) internal_function
;
115 /* Notify initiator of request and tell this everybody listening. */
116 extern void __aio_notify (struct requestlist
*req
) internal_function
;
118 /* Notify initiator of request. */
119 extern int __aio_notify_only (struct sigevent
*sigev
, pid_t caller_pid
)
122 /* Send the signal. */
123 extern int __aio_sigqueue (int sig
, const union sigval val
, pid_t caller_pid
)
126 #endif /* aio_misc.h */