Added cThread::SetIOPriority() and using it in cRemoveDeletedRecordingsThread

CONTRIBUTORS

@@ -1070,6 +1070,7 @@ Rolf Ahrenberg <rahrenbe@cc.hut.fi>
  for setting the thread name, so that it can be seen in 'top -H'
  for replacing the Finnish language code "smi" with "suo"
  for adding cap_sys_nice to the capabilities that are not dropped
+ for adding cThread::SetIOPriority() and using it in cRemoveDeletedRecordingsThread
 
 Ralf Klueber <ralf.klueber@vodafone.com>
  for reporting a bug in cutting a recording if there is only a single editing mark

HISTORY

@@ -6039,3 +6039,5 @@ Video Disk Recorder Revision History
   caused the selected audio and subtitle tracks to fall back to the default.
 - The SVDRP command PUTE now supports reading the EPG data from a given file
   (thanks to Helmut Auer).
+- Added cThread::SetIOPriority() and using it in cRemoveDeletedRecordingsThread
+  (thanks to Rolf Ahrenberg).

recording.c

@@ -4,7 +4,7 @@
  * See the main source file 'vdr.c' for copyright information and
  * how to reach the author.
  *
- * $Id: recording.c 2.11 2009/04/13 12:28:36 kls Exp $
+ * $Id: recording.c 2.12 2009/04/13 13:50:39 kls Exp $
  */
 
 #include "recording.h"
@@ -85,6 +85,7 @@ cRemoveDeletedRecordingsThread::cRemoveDeletedRecordingsThread(void)
 void cRemoveDeletedRecordingsThread::Action(void)
 {
   SetPriority(19);
+  SetIOPriority(7);
   // Make sure only one instance of VDR does this:
   cLockFile LockFile(VideoDirectory);
   if (LockFile.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 2.2 2008/09/06 09:39:43 kls Exp $
+ * $Id: thread.c 2.3 2009/04/13 13:50:39 kls Exp $
  */
 
 #include "thread.h"
@@ -226,6 +226,12 @@ void cThread::SetPriority(int Priority)
      LOG_ERROR;
 }
 
+void cThread::SetIOPriority(int Priority)
+{
+  if (syscall(SYS_ioprio_set, 1, 0, (Priority & 0xff) | (2 << 13)) < 0) // best effort class
+     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 1.39 2007/02/24 16:13:28 kls Exp $
+ * $Id: thread.h 2.1 2009/04/13 13:50:39 kls Exp $
  */
 
 #ifndef __THREAD_H
@@ -87,6 +87,7 @@ private:
   static void *StartThread(cThread *Thread);
 protected:
   void SetPriority(int Priority);
+  void SetIOPriority(int Priority);
   void Lock(void) { mutex.Lock(); }
   void Unlock(void) { mutex.Unlock(); }
   virtual void Action(void) = 0;