getdown/src/getdown/core/src/main/java/jalview/bin/MemoryPercent.java

   1 package jalview.bin;
   2
   3 import java.lang.management.ManagementFactory;
   4 import java.lang.management.OperatingSystemMXBean;
   5
   6 public class MemoryPercent
   7 {
   8
   9   protected static long getPhysicalMemory()
  10   {
  11     final OperatingSystemMXBean o = ManagementFactory
  12             .getOperatingSystemMXBean();
  13
  14     try
  15     {
  16       if (o instanceof com.sun.management.OperatingSystemMXBean)
  17       {
  18         final com.sun.management.OperatingSystemMXBean osb = (com.sun.management.OperatingSystemMXBean) o;
  19         return osb.getTotalPhysicalMemorySize();
  20       }
  21     } catch (NoClassDefFoundError e)
  22     {
  23       // com.sun.management.OperatingSystemMXBean doesn't exist in this JVM
  24       System.err.println(
  25               "No com.sun.management.OperatingSystemMXBean: cannot get total physical memory size");
  26     }
  27
  28     // We didn't get a com.sun.management.OperatingSystemMXBean.
  29     return -1;
  30   }
  31
  32 }