[PATCH v2 3/3] server: Boost main thread priority.

[Marc-Aurel Zent]

From: Marc-Aurel Zent

---
 server/thread.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/server/thread.c b/server/thread.c
index c0ec8203f41..2823c7d8076 100644
--- a/server/thread.c
+++ b/server/thread.c
@@ -337,7 +337,7 @@ static void apply_thread_priority( struct thread *thread )
         break;
     }
     /* QOS_UNSPECIFIED is assigned the highest tier available, so it does not provide a limit */
-    if (effective_priority >= LOW_REALTIME_PRIORITY)
+    if (effective_priority >= LOW_REALTIME_PRIORITY || effective_priority > thread->priority)
     {
         throughput_qos = THROUGHPUT_QOS_TIER_UNSPECIFIED;
         latency_qos = LATENCY_QOS_TIER_UNSPECIFIED;
@@ -827,7 +827,15 @@ affinity_t get_thread_affinity( struct thread *thread )

int get_effective_thread_priority( struct thread *thread )
 {
-    return thread->priority;
+    int priority = thread->priority;
+
+    if (thread->disable_boost || priority >= LOW_REALTIME_PRIORITY) 
+        return priority;
+
+    if (get_process_first_thread( thread->process ) == thread)
+        priority++;
+
+    return min( priority, LOW_REALTIME_PRIORITY - 1 );
 }

unsigned int set_thread_priority( struct thread *thread, int priority )