Add pid value to debug messages.

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
(cherry picked from commit 0970152d07)

tdecore/kdebug.cpp

@@ -295,18 +295,20 @@ static void kDebugBackend( unsigned short nLevel, unsigned int nArea, const char
       return;
   }
 
-  const int BUFSIZE = 4096;
-  char buf[BUFSIZE];
-  if ( !kDebug_data->aAreaName.isEmpty() ) {
-      strlcpy( buf, TQDateTime::currentDateTime().toString("[yyyy/MM/dd hh:mm:ss.zzz] [").ascii(), BUFSIZE );
-      strlcat( buf, kDebug_data->aAreaName.data(), BUFSIZE );
-      strlcat( buf, "] ", BUFSIZE );
-      strlcat( buf, data, BUFSIZE );
-  }
-  else {
-      strlcpy( buf, TQDateTime::currentDateTime().toString("[yyyy/MM/dd hh:mm:ss.zzz] ").ascii(), BUFSIZE );
-      strlcat( buf, data, BUFSIZE );
+  const int BUF_SIZE = 4096;
+  const int BUF_PID_SIZE = 20;
+  char buf[BUF_SIZE];
+  char buf_pid[BUF_PID_SIZE];
+  strlcpy(buf, TQDateTime::currentDateTime().toString("[yyyy/MM/dd hh:mm:ss.zzz] ").ascii(), BUF_SIZE);
+  if (!kDebug_data->aAreaName.isEmpty())
+  {
+    strlcat( buf, "[", BUF_SIZE );
+    strlcat( buf, kDebug_data->aAreaName.data(), BUF_SIZE );
+    strlcat( buf, "] ", BUF_SIZE );
   }
+  snprintf(buf_pid, BUF_PID_SIZE, "[%d] ", getpid());
+  strlcat(buf, buf_pid, BUF_SIZE);
+  strlcat(buf, data, BUF_SIZE);
 
   // Output
   switch( nOutput )