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Avoid infinite loop around timed condition variable

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This can happen due to spurious wakeups

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6631 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
malc 2009-02-21 05:48:13 +00:00
parent 8653c0158c
commit 30525aff78
1 changed files with 7 additions and 6 deletions
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13
posix-aio-compat.c
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@ -14,7 +14,7 @@
#include <pthread.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <time.h>
#include <string.h>
#include <stdlib.h>
#include <stdio.h>
@ -86,16 +86,17 @@ static void *aio_thread(void *unused)
struct qemu_paiocb *aiocb;
size_t offset;
int ret = 0;
qemu_timeval tv;
struct timespec ts;
qemu_gettimeofday(&tv);
ts.tv_sec = tv.tv_sec + 10;
ts.tv_nsec = 0;
mutex_lock(&lock);
while (TAILQ_EMPTY(&request_list) &&
!(ret == ETIMEDOUT)) {
struct timespec ts = { 0 };
qemu_timeval tv;
qemu_gettimeofday(&tv);
ts.tv_sec = tv.tv_sec + 10;
ret = cond_timedwait(&cond, &lock, &ts);
}