I wrote a small program to do Async IO from a raw disk
open has no problems.
My program gets stuck up at aio_read(paio);
!!WHY!!
-----------------------------------------------
#define _GNU_SOURCE
#include <aio.h>
#include <unistd.h>
#include <fcntl.h>
#define AIOLEN (256 * 1024)
int main(void)
{
/* Allocate resources /
struct aiocb *paio = (struct aiocb *) malloc(sizeof(struct aiocb));
paio->aio_buf = malloc(AIOLEN);
paio->aio_fildes = open("/dev/raw/raw1", O_DIRECT | O_RDWR);
paio->aio_nbytes = AIOLEN;
paio->aio_reqprio = 0; paio->aio_sigevent.sigev_notify = SIGEV_NONE;
aio_read(paio);
/* My program gets stuck here in this loop. !!WHY!! */
while(aio_error(paio))
{
sched_yield();
}
aio_return(paio);
/* Return all resources to Linux */
close(paio->aio_fildes);
free(paio->aio_buf);
free(paio);
return 0;
}
-----------------------------------------------
I also have tried inserting an 'aio_fsync' between 'aio_read' and the
'while' loop ... to no avail.
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
