Ping.
On Fri, 22 Feb 2019 18:11:44 -0700
Kevin Buettner <[email protected]> wrote:
> For debugging purposes, I need to be able to find the master thread
> in the thread pool.
>
> Without this patch, I see over 20 failures in the tests that I've
> written for GDB.
>
> I've also tested this in the gcc tree - no regressions.
>
> libgomp/ChangeLog:
>
> * team.c (gomp_team_start): Initialize pool->threads[0].
> ---
> libgomp/team.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/libgomp/team.c b/libgomp/team.c
> index 2b2e9750da5..e331c9b72c0 100644
> --- a/libgomp/team.c
> +++ b/libgomp/team.c
> @@ -477,11 +477,17 @@ gomp_team_start (void (*fn) (void *), void *data,
> unsigned nthreads,
> make no effort to expand gomp_threads_size geometrically. */
> if (nthreads >= pool->threads_size)
> {
> + bool need_init = (pool->threads == NULL);
> pool->threads_size = nthreads + 1;
> pool->threads
> = gomp_realloc (pool->threads,
> pool->threads_size
> * sizeof (struct gomp_thread *));
> + if (need_init)
> + {
> + /* Add current (master) thread to threads[]. */
> + pool->threads[0] = thr;
> + }
> }
>
> /* Release existing idle threads. */
>
