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authorSebastian Huber <sebastian.huber@embedded-brains.de>2015-07-15 09:11:11 +0000
committerSebastian Huber <sh@gcc.gnu.org>2015-07-15 09:11:11 +0000
commit6dba011330935d77386e99066fdb14b011a19ffa (patch)
tree31b5db57e91957cc7fe59dfeb5f0fd58f144952a /libgomp
parent290f6359d2702746f262fc74adc77ce85e3df63e (diff)
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[gomp] Recycle last non-nested team if possible
libgomp/ChangeLog 2015-07-15 Sebastian Huber <sebastian.huber@embedded-brains.de> * team.c (get_last_team): New. (gomp_new_team): Recycle last non-nested team if possible. (gomp_team_end): Move team work share list free lock destruction to ... (free_team): ... here. From-SVN: r225811
Diffstat (limited to 'libgomp')
-rw-r--r--libgomp/ChangeLog8
-rw-r--r--libgomp/team.c50
2 files changed, 45 insertions, 13 deletions
diff --git a/libgomp/ChangeLog b/libgomp/ChangeLog
index 27c205d..00cdc2e 100644
--- a/libgomp/ChangeLog
+++ b/libgomp/ChangeLog
@@ -1,3 +1,11 @@
+2015-07-15 Sebastian Huber <sebastian.huber@embedded-brains.de>
+
+ * team.c (get_last_team): New.
+ (gomp_new_team): Recycle last non-nested team if possible.
+ (gomp_team_end): Move team work share list free lock destruction
+ to ...
+ (free_team): ... here.
+
2015-07-14 Maxim Blumenthal <maxim.blumenthal@intel.com>
* testsuite/libgomp.c/examples-4/simd-3.c: (main): Change type of res
diff --git a/libgomp/team.c b/libgomp/team.c
index b98b233..7671b05 100644
--- a/libgomp/team.c
+++ b/libgomp/team.c
@@ -134,6 +134,25 @@ gomp_thread_start (void *xdata)
return NULL;
}
+static inline struct gomp_team *
+get_last_team (unsigned nthreads)
+{
+ struct gomp_thread *thr = gomp_thread ();
+ if (thr->ts.team == NULL)
+ {
+ struct gomp_thread_pool *pool = thr->thread_pool;
+ if (pool != NULL)
+ {
+ struct gomp_team *last_team = pool->last_team;
+ if (last_team != NULL && last_team->nthreads == nthreads)
+ {
+ pool->last_team = NULL;
+ return last_team;
+ }
+ }
+ }
+ return NULL;
+}
/* Create a new team data structure. */
@@ -141,18 +160,27 @@ struct gomp_team *
gomp_new_team (unsigned nthreads)
{
struct gomp_team *team;
- size_t size;
int i;
- size = sizeof (*team) + nthreads * (sizeof (team->ordered_release[0])
- + sizeof (team->implicit_task[0]));
- team = gomp_malloc (size);
+ team = get_last_team (nthreads);
+ if (team == NULL)
+ {
+ size_t extra = sizeof (team->ordered_release[0])
+ + sizeof (team->implicit_task[0]);
+ team = gomp_malloc (sizeof (*team) + nthreads * extra);
+
+#ifndef HAVE_SYNC_BUILTINS
+ gomp_mutex_init (&team->work_share_list_free_lock);
+#endif
+ gomp_barrier_init (&team->barrier, nthreads);
+ gomp_mutex_init (&team->task_lock);
+
+ team->nthreads = nthreads;
+ }
team->work_share_chunk = 8;
#ifdef HAVE_SYNC_BUILTINS
team->single_count = 0;
-#else
- gomp_mutex_init (&team->work_share_list_free_lock);
#endif
team->work_shares_to_free = &team->work_shares[0];
gomp_init_work_share (&team->work_shares[0], false, nthreads);
@@ -163,14 +191,10 @@ gomp_new_team (unsigned nthreads)
team->work_shares[i].next_free = &team->work_shares[i + 1];
team->work_shares[i].next_free = NULL;
- team->nthreads = nthreads;
- gomp_barrier_init (&team->barrier, nthreads);
-
gomp_sem_init (&team->master_release, 0);
team->ordered_release = (void *) &team->implicit_task[nthreads];
team->ordered_release[0] = &team->master_release;
- gomp_mutex_init (&team->task_lock);
team->task_queue = NULL;
team->task_count = 0;
team->task_queued_count = 0;
@@ -187,6 +211,9 @@ gomp_new_team (unsigned nthreads)
static void
free_team (struct gomp_team *team)
{
+#ifndef HAVE_SYNC_BUILTINS
+ gomp_mutex_destroy (&team->work_share_list_free_lock);
+#endif
gomp_barrier_destroy (&team->barrier);
gomp_mutex_destroy (&team->task_lock);
free (team);
@@ -895,9 +922,6 @@ gomp_team_end (void)
while (ws != NULL);
}
gomp_sem_destroy (&team->master_release);
-#ifndef HAVE_SYNC_BUILTINS
- gomp_mutex_destroy (&team->work_share_list_free_lock);
-#endif
if (__builtin_expect (thr->ts.team != NULL, 0)
|| __builtin_expect (team->nthreads == 1, 0))