Unlock cond_mutex before pthread exit in gp_worker_main()

Unlock-cond_mutex-before-pthread-exit-in-gp_worker_main.patch

@@ -0,0 +1,24 @@
+From cb761412e299ef907f22cd7c4146d50c8a792003 Mon Sep 17 00:00:00 2001
+From: Guiyao <guiyao@huawei.com>
+Date: Mar 26 2020 17:54:17 +0000
+Subject: Unlock cond_mutex before pthread exit in gp_worker_main()
+
+
+Signed-off-by: GuiYao <guiyao@huawei.com>
+[rharwood@redhat.com: whitespace, tweak commit message]
+Reviewed-by: Robbie Harwood <rharwood@redhat.com>
+
+---
+
+diff --git a/src/gp_workers.c b/src/gp_workers.c
+index 18f38f6..ae42cef 100644
+--- a/src/gp_workers.c
++++ b/src/gp_workers.c
+@@ -369,6 +369,7 @@ static void *gp_worker_main(void *pvt)
+             /* wait for next query */
+             pthread_cond_wait(&t->cond_wakeup, &t->cond_mutex);
+             if (t->pool->shutdown) {
++                pthread_mutex_unlock(&t->cond_mutex);
+                 pthread_exit(NULL);
+             }
+         }