Re: [Qemu-devel] [PATCH v3 01/10] Introduce qemu_cond_timedwait for POSIX

[Peter Maydell <peter.maydell@linaro.org>]

On 5 April 2012 11:59, Jan Kiszka <jan.kiszka@siemens.com> wrote:
> +/* Returns true if condition was signals, false if timed out. */
> +bool qemu_cond_timedwait(QemuCond *cond, QemuMutex *mutex,
> +                         unsigned int timeout_ms)
> +{
> +    struct timespec ts;
> +    struct timeval tv;
> +    int err;
> +
> +    gettimeofday(&tv, NULL);
> +    ts.tv_sec = tv.tv_sec + timeout_ms / 1000;
> +    ts.tv_nsec = tv.tv_usec * 1000 + timeout_ms % 1000;
> +    if (ts.tv_nsec > 1000000000) {
> +        ts.tv_sec++;
> +        ts.tv_nsec -= 1000000000;
> +    }
> +    err = pthread_cond_timedwait(&cond->cond, &mutex->lock, &ts);

Use clock_gettime() and avoid the need to convert a struct timeval
to a struct timespec ?

-- PMM