sigar/bindings/java/src/net/hyperic/sigar/cmd/Top.java
2006-06-22 02:57:23 +00:00

77 lines
2.1 KiB
Java

package net.hyperic.sigar.cmd;
import java.util.List;
import net.hyperic.sigar.Sigar;
import net.hyperic.sigar.SigarException;
import net.hyperic.sigar.SigarProxy;
import net.hyperic.sigar.CpuPerc;
import net.hyperic.sigar.SigarProxyCache;
import net.hyperic.sigar.ProcCpu;
import net.hyperic.sigar.CurrentProcessSummary;
/**
* 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>
*
* @see net.hyperic.sigar.ptql.ProcessQueryBuilder
*/
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";
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(CurrentProcessSummary.get(sigar));
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 = Ps.getInfo(sigar, pid);
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);
}
}
}