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Re: problems with Asynchronous I/O and glibc-2.1.2 - FW: [Fwd: IPC and glibc?]
- To: <lchen at opentext dot com>
- Subject: Re: problems with Asynchronous I/O and glibc-2.1.2 - FW: [Fwd: IPC and glibc?]
- From: Andreas Jaeger <aj at suse dot de>
- Date: 17 Dec 1999 14:51:31 +0100
- Cc: <libc-alpha at sourceware dot cygnus dot com>
- References: <001d01bf2f8a$c00b1f90$4c0312ac@akifle.col.opentext.com>
>>>>> Lawrence Chen, P Eng writes:
> I'm having a problem with Asynchronous I/O and glibc-2.1.2.
> The application I'm porting used to work with glibc-2.1.1 (except that I had to
> code around the fact that aio_read and aio_write gave the wrong return values).
Are you using the 64bit interface? Or just the normal 32bit interface?
I just fixed a number of problems in the 64bit functions - they were
completly broken. A patch is appended (you need to recompile glibc).
If you're using the normal 32bit interface, we do need a test program
to check this ourselves. Otherwise there's no way we can help.
Andreas
============================================================
Index: rt/aio.h
--- rt/aio.h 1998/12/04 20:54:31 1.8
+++ rt/aio.h 1999/12/17 12:34:19
@@ -57,7 +57,8 @@
char __unused[32];
};
-/* The same for the 64bit offsets. */
+/* The same for the 64bit offsets. Please note that the members aio_fildes
+ to __return_value have to be the same in aiocb and aiocb64. */
#ifdef __USE_LARGEFILE64
struct aiocb64
{
@@ -69,6 +70,7 @@
struct sigevent aio_sigevent; /* Signal number and value. */
/* Internal members. */
+ struct aiocb *__next_prio;
int __abs_prio;
int __policy;
int __error_code;
@@ -172,7 +174,7 @@
extern int __REDIRECT (lio_listio,
__P ((int __mode,
- struct aiocb *__const __restrict __list[],
+ struct aiocb *__const __list[],
int __nent, struct sigevent *__restrict __sig)),
lio_listio64);
@@ -186,13 +188,13 @@
aio_cancel64);
extern int __REDIRECT (aio_suspend,
- __P ((__const struct aiocb *__const __restrict __list[],
+ __P ((__const struct aiocb *__const __list[],
int __nent,
__const struct timespec *__restrict __timeout)),
aio_suspend64);
-extern int __REDIRECT (aio_fsync __P ((int __operation,
- struct aiocb *__aiocbp)),
+extern int __REDIRECT (aio_fsync, __P ((int __operation,
+ struct aiocb *__aiocbp)),
aio_fsync64);
# else
--
Andreas Jaeger
SuSE Labs aj@suse.de
private aj@arthur.rhein-neckar.de