public static double getCpuUsage(long time) throws ApplicationException {
if (time < 1) throw new ApplicationException("time has to be bigger than 0");
if (jsm == null) jsm = new JavaSysMon();
CpuTimes cput = jsm.cpuTimes();
if (cput == null)
throw new ApplicationException("CPU information are not available for this OS");
CpuTimes previous =
new CpuTimes(cput.getUserMillis(), cput.getSystemMillis(), cput.getIdleMillis());
sleep(time);
return jsm.cpuTimes().getCpuUsage(previous) * 100D;
}
private static synchronized MemoryStats physical() throws ApplicationException {
if (jsm == null) jsm = new JavaSysMon();
MemoryStats p = jsm.physical();
if (p == null)
throw new ApplicationException("Memory information are not available for this OS");
return p;
}