On Thu, 5 Nov 2009, Andrzej K. Haczewski wrote:
> @@ -1638,6 +1657,8 @@ static void ll_find_deltas(struct object_entry **list, unsigned list_size,
> delta_search_threads);
> p = xcalloc(delta_search_threads, sizeof(*p));
>
> + init_threaded_search();
Careful. At the beginning of the function you'll find:
if (delta_search_threads <= 1) {
find_deltas(list, &list_size, window, depth, processed);
return;
}
That is, if we have thread support compiled in but we're told to use
only one thread, then the bulk of the work splitting is bypassed
entirely. Inside find_deltas() there will still be pthread_mutex_lock()
and pthread_mutex_unlock() calls even if no threads are spawned.
Nicolas
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