From 8f4dae67732acc9334318f987c159f6176e3cdfd Mon Sep 17 00:00:00 2001
From: lillo <lillo@nowhere.fake>
Date: Wed, 31 Jul 2002 20:05:24 +0000
Subject: [PATCH] applied small patch to boost priority on sem block

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@547 a95241bf-73f2-0310-859d-f6bbb57e9c96
---
 src/kernel/core/sem.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/kernel/core/sem.c b/src/kernel/core/sem.c
index 7c0f33c83e..827b6c795c 100644
--- a/src/kernel/core/sem.c
+++ b/src/kernel/core/sem.c
@@ -500,9 +500,14 @@ int release_sem_etc(sem_id id, int count, int flags)
 	// pull off any items in the release queue and put them in the run queue
 	if (released_threads > 0) {
 		struct thread *t;
+		int priority;
 		GRAB_THREAD_LOCK();
 		while ((t = thread_dequeue(&release_queue)) != NULL) {
+			// temporarily place thread in a run queue with high priority to boost it up
+			priority = t->priority;
+			t->priority = t->priority >= THREAD_HIGH_PRIORITY ? t->priority : THREAD_HIGH_PRIORITY;
 			thread_enqueue_run_q(t);
+			t->priority = priority;
 		}
 		if ((flags & B_DO_NOT_RESCHEDULE) == 0) {
 			thread_resched();