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  1. JDK
  2. JDK-6602355

If a debuggee is waiting for a connection, jps fails with msg: Could not synchronize with target

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 7
    • Fix Version/s: None
    • Component/s: core-svc
    • Labels:
    • Subcomponent:
    • CPU:
      generic
    • OS:
      generic

      Description

      That seems fair enough for the debuggee process, but the problem is that
      in this case, jps doesn't report other java processes either.


      Here is a script that demonstrates this.
      #!/bin/sh
      if [ $# = 0 ] ; then
          java=java
          jps=jps
          javac=javac
      else
          java=$1/bin/java
          jps=$1/bin/jps
          javac=$1/bin/javac
      fi

      cat <<EOF > /tmp/hello.java


      public class hello {
          public static void main(String args[]) {
              try {
                  Thread.sleep(50000);
              }
              catch (Exception ee) {
              }
          }
      }
      EOF

      $javac -d . /tmp/hello.java

      echo "jps without a waiting debuggee running:"
      $java hello &
      pid1=$!
      $jps

      echo
      echo "run a debuggee that waits for a connection:"
      $java -Xrunjdwp:transport=dt_socket,address=46225,server=y,suspend=y hello &
      pid=$!

      echo
      sleep 5
      echo "jps again"
      $jps

      kill $pid
      kill $pid1
      This failure mode has been seen in nightly testing. Here is
      my analysis report entry:

      New MISC_REGRESSION failures (from 2007.11.22)
          sun/tools/jps/jps-lm.sh
          sun/tools/jps/jps-l_2.sh
          sun/tools/jps/jps-m_2.sh
          sun/tools/jps/jps-Vm_2.sh
          sun/tools/jps/jps-Vvml.sh
          sun/tools/jps/jps-Vvml_2.sh
          sun/tools/jps/jps-V_2.sh
              These tests failed due to "Could not synchronize with target" on
              Win32 Client VM (machine vm-8450r-3).

              Update: Swamy believes these failures are due to problems with
                  the test machine.

              Update: Swamy found the following existing bug:
                  6602355 4/4 If a debuggee is waiting for a connection, jps
                              fails with msg: Could not synchronize with target

              Update: Swamy verified that the failures on vm-8450r-3 are due
                  to 6602355.
      Here is another analysis report entry:

      New MISC_REGRESSION failures (from 2007.11.28)
          sun/tools/jps/jps-Defaults.sh
          sun/tools/jps/jps-l_1.sh
      * sun/tools/jps/jps-m.sh
          sun/tools/jps/jps-Vm_2.sh
              These tests failed due to "Could not synchronize with target"
              on Win-AMD64 Server VM (machine vm-x2100-01). These failures
              are an occurrence of the following bug:

                  6602355 4/4 If a debuggee is waiting for a connection, jps
                              fails with msg: Could not synchronize with target
      Here is another analysis report entry:

      New MISC_REGRESSION failures (from 2007.12.06)
      * sun/tools/jps/jps-Vvm.sh
      * sun/tools/jps/jps-v_1.sh
      * sun/tools/jps/jps-vm_1.sh
              These tests failed due to "Could not synchronize with target"
              on Win32 Server VM (machine colfax005). These failures are an
              occurrence of the following bug:

                  6602355 4/4 If a debuggee is waiting for a connection, jps
                              fails with msg: Could not synchronize with target

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              Assignee:
              swamyv Swamy Venkataramanappa
              Reporter:
              jjh James Holmlund (Inactive)
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                Updated:
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