Copy the KDE 3.5 branch to branches/trinity for new KDE 3.5 features.

BUG:215923


git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdebase@1054174 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 143 insertions, 0 deletions

diff --git a/ksysguard/ksysguardd/Linux/loadavg.c b/ksysguard/ksysguardd/Linux/loadavg.c
new file mode 100644
index 000000000..788e32793
--- /dev/null
+++ b/ksysguard/ksysguardd/Linux/loadavg.c
@@ -0,0 +1,143 @@
+/*
+    KSysGuard, the KDE System Guard
+
+    Copyright (c) 1999, 2000 Chris Schlaeger <cs@kde.org>
+
+    This program is free software; you can redistribute it and/or
+    modify it under the terms of version 2 of the GNU General Public
+    License as published by the Free Software Foundation.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+
+*/
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#include "ksysguardd.h"
+#include "Command.h"
+
+#include "loadavg.h"
+
+static int LoadAvgOK = 0;
+static double LoadAvg1, LoadAvg5, LoadAvg15;
+
+#define LOADAVGBUFSIZE 128
+static char LoadAvgBuf[ LOADAVGBUFSIZE ];
+static int Dirty = 0;
+
+static void processLoadAvg( void )
+{
+  sscanf( LoadAvgBuf, "%lf %lf %lf", &LoadAvg1, &LoadAvg5, &LoadAvg15 );
+  Dirty = 0;
+}
+
+/*
+================================ public part =================================
+*/
+
+void initLoadAvg( struct SensorModul* sm )
+{
+  if ( updateLoadAvg() < 0 ) {
+    LoadAvgOK = -1;
+    return;
+  } else
+    LoadAvgOK = 1;
+
+  registerMonitor( "cpu/loadavg1", "float", printLoadAvg1, printLoadAvg1Info, sm );
+  registerMonitor( "cpu/loadavg5", "float", printLoadAvg5, printLoadAvg5Info, sm );
+  registerMonitor( "cpu/loadavg15", "float", printLoadAvg15, printLoadAvg15Info, sm );
+}
+
+void exitLoadAvg( void )
+{
+  LoadAvgOK = -1;
+}
+
+int updateLoadAvg( void )
+{
+  size_t n;
+  int fd;
+
+  if ( LoadAvgOK < 0 )
+    return -1;
+
+  if ( ( fd = open( "/proc/loadavg", O_RDONLY ) ) < 0 ) {
+    if ( LoadAvgOK != 0 )
+      print_error( "Cannot open file \'/proc/loadavg\'!\n"
+                   "The kernel needs to be compiled with support\n"
+                   "for /proc filesystem enabled!\n" );
+    return -1;
+  }
+
+  if ( ( n = read( fd, LoadAvgBuf, LOADAVGBUFSIZE - 1 ) ) == LOADAVGBUFSIZE - 1 ) {
+    log_error( "Internal buffer too small to read \'/proc/loadavg\'" );
+
+    close( fd );
+    return -1;
+  }
+
+  close( fd );
+  LoadAvgBuf[ n ] = '\0';
+  Dirty = 1;
+
+  return 0;
+}
+
+void printLoadAvg1( const char* cmd )
+{
+  (void)cmd;
+
+  if ( Dirty )
+    processLoadAvg();
+
+  fprintf( CurrentClient, "%f\n", LoadAvg1 );
+}
+
+void printLoadAvg1Info( const char* cmd )
+{
+  (void)cmd;
+  fprintf( CurrentClient, "Load average 1 min\t0\t0\t\n" );
+}
+
+void printLoadAvg5( const char* cmd )
+{
+  (void)cmd;
+
+  if ( Dirty )
+    processLoadAvg();
+
+  fprintf( CurrentClient, "%f\n", LoadAvg5 );
+}
+
+void printLoadAvg5Info( const char* cmd )
+{
+  (void)cmd;
+  fprintf( CurrentClient, "Load average 5 min\t0\t0\t\n" );
+}
+
+void printLoadAvg15( const char* cmd )
+{
+  (void)cmd;
+
+  if ( Dirty )
+    processLoadAvg();
+
+  fprintf( CurrentClient, "%f\n", LoadAvg15 );
+}
+
+void printLoadAvg15Info( const char* cmd )
+{
+  (void)cmd;
+  fprintf( CurrentClient, "Load average 15 min\t0\t0\t\n" );
+}