Name: akC45999 Date: 05/28/98




On win32 version of jdk1.2beta4G,
the sleep(millis) method can sleep less time than the parameter specified.

Such behaviour contradicts the specification.
 
------------------------------------- file sleep0101.java
//File: @(#)sleep0101.java 1.2 97/12/08
//Copyright 12/08/97 Sun Microsystems, Inc. All Rights Reserved

//package javasoft.sqe.tests.api.java.lang.Thread.sleep0101;

import java.io.PrintStream;
//import javasoft.sqe.harness.Status;
//import javasoft.sqe.harness.Test;

class Status {
  public static int failed(String msg) {
System.out.println("Failed. "+msg);
return 97;
  }

  public static int passed(String msg) {
System.out.println("Passed. "+msg);
return 97;
  }
}
public class sleep0101 {// implements Test {

  public int run(String argv[], PrintStream log, PrintStream out) {
        Thread me=Thread.currentThread();
        int[] data={3162,1000,316,100,32,10,3,1,0};
        for (int k=0; k<data.length; k++) {
                int delay=data[k];
                long time=System.currentTimeMillis();
                try {
                        me.sleep(delay);
                } catch (Throwable e) {
                        return Status.failed("Unexpected exception in sleep("+delay+"): "+e.toString());
                }
                long realDelay=System.currentTimeMillis()-time;
                if (realDelay<delay)
                        return Status.failed("sleep("+delay+") actually sleeped "+realDelay+" msec");
        }
    return Status.passed("");
  }

  public static void main(String args[]) {
// (new sleep0101()).run(args, System.err, System.out).exit();
     System.exit((new sleep0101()).run(args, System.err, System.out));
  }

}
------------------------------------- end of file sleep0101.java

Intermittenly, it failed with results:
Failed. sleep(316) actually sleeped 312 msec
Failed. sleep(32) actually sleeped 31 msec

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