Name: dkC103137 Date: 07/04/2000


libs_api_tests/common/java_net/ServeSock/GeneralServer1 test from testbase_ss
hangs only under

Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b09)
Classic VM (build 1.3.0beta-b09, green threads, nojit)

This test creates object of class GeneralServer1 using constructor which has
empty while-statement cycle with constant true condition. This leads to infinite
cycle execution if test is executed using VM that has not real thread
concurency.
The test makes wrong assumption that VM must switch between all alived threads
in certain time period. But JVM Spec does not specify that VM must transfer
control from current executed thread to another one unless threads use explicit
methods to transfer control. So the test is invalid.

See citation from the source code below:
-------------------------- GeneralServer1.java --------------------
....
public class GeneralServer1 {

   Socket sSock = null;
   GeneralServer1(int iPort) {
      try {
         Socket sSock = new Socket("localhost", iPort);
         ....
         BufferedOutputStream bOut = new BufferedOutputStream(
            sSock.getOutputStream());
         byte[] bBuff = sMsgs[count].getBytes();
         bOut.write(bBuff);
         bOut.flush();
         sSock.close();
         
         // give the server a chance to process this and determine
         // test status.
         while (true) {} <-- infinite cycle !!!
         }
      catch (Exception eExcept) {
         ....
      }
      ....
   }
}
------------------------------------------------------------------

======================================================================