Added cThread::SetPriority() and using it in cSectionHandler::Action() to reduce the priority of the section handler threads

CONTRIBUTORS

@@ -1366,3 +1366,4 @@ Georg Acher <acher@baycom.de>
  for a patch that was used to implement hash tables to speed up cSchedule::GetEvent()
  for avoiding unnecessary calls to getLength() in libsi/si.c, and avoiding the
  '& 0xff' in CRC32::crc32() of libsi/util.c
+ for suggesting to reduce the priority of the section handler threads

HISTORY

@@ -3575,3 +3575,5 @@ Video Disk Recorder Revision History
 - Speeded up deleting duplicate channels.
 - Fixed listing recordings with empty episode names in the LSTR command (thanks
   to Stefan Huelswitt for pointing this out).
+- Added cThread::SetPriority() and using it in cSectionHandler::Action() to
+  reduce the priority of the section handler threads (as suggested by Georg Acher).

sections.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: sections.c 1.10 2004/10/24 11:05:12 kls Exp $
+ * $Id: sections.c 1.11 2005/05/29 11:43:17 kls Exp $
  */
 
 #include "sections.h"
@@ -167,6 +167,7 @@ void cSectionHandler::SetStatus(bool On)
 void cSectionHandler::Action(void)
 {
   active = true;
+  SetPriority(19);
   while (active) {
 
         Lock();

thread.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: thread.c 1.42 2005/05/06 14:39:15 kls Exp $
+ * $Id: thread.c 1.43 2005/05/29 11:40:30 kls Exp $
  */
 
 #include "thread.h"
@@ -208,6 +208,12 @@ cThread::~cThread()
   free(description);
 }
 
+void cThread::SetPriority(int Priority)
+{
+  if (setpriority(PRIO_PROCESS, 0, Priority) < 0)
+     LOG_ERROR;
+}
+
 void cThread::SetDescription(const char *Description, ...)
 {
   free(description);

thread.h

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: thread.h 1.27 2005/01/14 14:02:14 kls Exp $
+ * $Id: thread.h 1.28 2005/05/29 11:31:24 kls Exp $
  */
 
 #ifndef __THREAD_H
@@ -82,6 +82,7 @@ private:
   static bool emergencyExitRequested;
   static void *StartThread(cThread *Thread);
 protected:
+  void SetPriority(int Priority);
   void Lock(void) { mutex.Lock(); }
   void Unlock(void) { mutex.Unlock(); }
   virtual void Action(void) = 0;