65 lines
1.5 KiB
Java
65 lines
1.5 KiB
Java
import java.util.Vector;
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/**
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* Under JavaSoft's VM they arbitarily limit the amount of memory
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* a Java application can use (though this can be overridden). The
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* point here is to check to see whether or not an application being
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* run by Japhar will ever get the OutOfMemoryError or not when resources
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* are scarce. --brian
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*/
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public class OutOfMemoryErrorTest
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{
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public static void main(String[] argv)
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{
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Vector v = null;
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Runtime r = null;
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long free = 0, total = 0;
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// quickly approach memory limit 1M at a time
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try {
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r = Runtime.getRuntime();
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v = new Vector();
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while(true)
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{
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v.addElement(new byte[1048576]);
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}
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}
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// out of memory error
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catch (OutOfMemoryError oomerr1)
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{
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// slowly encroach on memory limit 2 bytes+ at a time
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try {
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while(true)
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{
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v.addElement(new byte[2]);
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}
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}
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// out of memory error
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catch (OutOfMemoryError oomerr2)
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{
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if (r != null)
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{
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free = r.freeMemory();
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total = r.totalMemory();
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v = null;
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r.gc();
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// System.out.println("free = " + free);
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// System.out.println("total = " + total);
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System.out.println("PASSED: ");
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}
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else
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System.out.println("FAILED: runtime unknown");
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}
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}
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// generic error
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catch (Error err)
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{
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System.out.println("FAILED: unexpected error");
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}
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// generic exception
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catch (Exception e)
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{
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System.out.println("FAILED: unexpected exception");
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}
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}
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}
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