On Fri, Oct 26, 2012 at 04:05:48PM +0200, Paolo Bonzini wrote:
> +int qemu_sem_timedwait(QemuSemaphore *sem, int ms)
> +{
> + int rc;
> +
> + if (ms <= 0) {
> + /* This is cheaper than sem_timedwait. */
> + rc = sem_trywait(&sem->sem);
> + if (rc == -1 && errno == EAGAIN) {
> + return -1;
> + }
> + } else {
> + struct timeval tv;
> + struct timespec ts;
> + gettimeofday(&tv, NULL);
> + ts.tv_nsec = tv.tv_usec * 1000 + (ms % 1000) * 1000000;
> + ts.tv_sec = tv.tv_sec + ms / 1000;
> + if (ts.tv_nsec >= 1000000000) {
> + ts.tv_sec++;
> + ts.tv_nsec -= 1000000000;
> + }
> + rc = sem_timedwait(&sem->sem, &ts);
> + if (rc == -1 && errno == ETIMEDOUT) {
> + return -1;
> + }
> + }
> + if (rc < 0) {
> + error_exit(errno, __func__);
> + }
Forgot to handle EINTR?
> + return 0;
> +}
> +
> +void qemu_sem_wait(QemuSemaphore *sem)
> +{
> + int rc;
> +
> + rc = sem_wait(&sem->sem);
> + if (rc < 0) {
> + error_exit(errno, __func__);
> + }
EINTR
