/*
* Copyright (c) 2006-2008 Hyperic, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.hyperic.sigar.cmd;
import java.util.List;
import org.hyperic.sigar.Sigar;
import org.hyperic.sigar.SigarException;
import org.hyperic.sigar.SigarProxy;
import org.hyperic.sigar.CpuPerc;
import org.hyperic.sigar.SigarProxyCache;
import org.hyperic.sigar.ProcCpu;
import org.hyperic.sigar.ProcStat;
/**
* Display system resource utilization summaries and process information.
* <p>
* This version of the top command requires a ptql query to select which
* processes to display.
*
* Example to display java processes only:<br>
* <code>% java -jar sigar-bin/lib/sigar.jar Top State.Name.eq=java</code>
*/
public class Top {
private static final int SLEEP_TIME = 1000 * 5;
private static final String HEADER =
"PID\tUSER\tSTIME\tSIZE\tRSS\tSHARE\tSTATE\tTIME\t%CPU\tCOMMAND";
private static String toString(ProcStat stat) {
return
stat.getTotal() + " processes: " +
stat.getSleeping() + " sleeping, " +
stat.getRunning() + " running, " +
stat.getZombie() + " zombie, " +
stat.getStopped() + " stopped... " + stat.getThreads() + " threads";
}
public static void main(String[] args) throws Exception {
Sigar sigarImpl = new Sigar();
SigarProxy sigar =
SigarProxyCache.newInstance(sigarImpl, SLEEP_TIME);
while (true) {
Shell.clearScreen();
System.out.println(Uptime.getInfo(sigar));
System.out.println(toString(sigar.getProcStat()));
System.out.println(sigar.getCpuPerc());
System.out.println(sigar.getMem());
System.out.println(sigar.getSwap());
System.out.println();
System.out.println(HEADER);
long[] pids = Shell.getPids(sigar, args);
for (int i=0; i<pids.length; i++) {
long pid = pids[i];
String cpuPerc = "?";
List info;
try {
info = Ps.getInfo(sigar, pid);
} catch (SigarException e) {
continue; //process may have gone away
}
try {
ProcCpu cpu = sigar.getProcCpu(pid);
cpuPerc = CpuPerc.format(cpu.getPercent());
} catch (SigarException e) {
}
info.add(info.size()-1, cpuPerc);
System.out.println(Ps.join(info));
}
Thread.sleep(SLEEP_TIME);
SigarProxyCache.clear(sigar);
}
}
}