TESTFAIL:java/rmi/activation/CommandEnvironment/SetChildEnv.java

The DebugExecWatcher inner class of test/java/rmi/activation/CommandEnvironment/SetChildEnv regression test
raises a systematic java.IO.Exception:

java.io.IOException: Pipe closed
       .....
each time the runwith method is called. However the test is said to succeed
even with this exception. This is a defect in the way the code is writen,
even if it does not affect the result as long as the distant rmid and client
code works as expected, but may bring unexpected result if distant rmid breaks.

Thisneeds cleanup for getting better and more reliable code.

See below the output of a jtreg session running this SetChildEnv reg test.

----------System.out:(17/737)----------
java.compiler=null
JavaVM javaCommand = [Ljava.lang.String;@bc8f01
Invoking complain()...
HELP ME, DOCTOR. I FEEL VIOLENT TOWARDS PEOPLE WHO INQUIRE ABOUT MY PARENTS.
 => TELL ME ABOUT YOUR MOTHER
JavaVM javaCommand = [Ljava.lang.String;@1ade7f6
Invoking complain()...
HELP ME, DOCTOR. I FEEL VIOLENT TOWARDS PEOPLE WHO INQUIRE ABOUT MY PARENTS.
 => TELL ME ABOUT YOUR MOTHER
JavaVM javaCommand = [Ljava.lang.String;@a76581
Invoking complain()...
HELP ME, DOCTOR. I FEEL VIOLENT TOWARDS PEOPLE WHO INQUIRE ABOUT MY PARENTS.
 => TELL ME ABOUT YOUR MOTHER
JavaVM javaCommand = [Ljava.lang.String;@18d343a
Invoking complain()...
HELP ME, DOCTOR. I FEEL VIOLENT TOWARDS PEOPLE WHO INQUIRE ABOUT MY PARENTS.
 => TELL ME ABOUT YOUR MOTHER
----------System.err:(115/13367)----------
RMID: starting rmid...
JAVAVM: command = [/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/build/solaris-sparc/j2sdk-image/jre/bin/java, -Djava.security.policy=/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/test/java/rmi/activation/CommandEnvironment/rmid.security.policy, -Dsun.rmi.server.activation.debugExec=true, -Dtest.src=/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/test/java/rmi/activation/CommandEnvironment, -Dtest.classes=/export/Scratch/olagneau/bug7161503/rmitests/JTwork/classes/java/rmi/activation/CommandEnvironment, -Djava.rmi.server.logLevel=v, sun.rmi.server.Activation, -log, /export/Scratch/olagneau/bug7161503/rmitests/JTwork/scratch/./log, -port, 36196, -C-Dtest.src=/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/test/java/rmi/activation/CommandEnvironment, -C-Dtest.classes=/export/Scratch/olagneau/bug7161503/rmitests/JTwork/classes/java/rmi/activation/CommandEnvironment]

JAVAVM: finished starting vm.
RMID: finished starting rmid.
# rmid: debugExec: running "/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/build/solaris-sparc/j2sdk-image/jre/bin/java -Djava.security.manager=default -Djava.security.policy=/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/test/java/rmi/activation/CommandEnvironment/group.security.policy -Dtest.src=/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/test/java/rmi/activation/CommandEnvironment -Dtest.classes=/export/Scratch/olagneau/bug7161503/rmitests/JTwork/classes/java/rmi/activation/CommandEnvironment sun.rmi.server.ActivationGroupInit"
# Fri Jul 13 19:24:01 IST 2012:ExecGroup-0:out:Doctor constructed and exported
# Fri Jul 13 19:24:02 IST 2012:ExecGroup-0:out:Doctor will see you now
debugExec found: <<# rmid: debugExec: running "/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/build/solaris-sparc/j2sdk-image/jre/bin/java -Djava.security.manager=default -Djava.security.policy=/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/test/java/rmi/activation/CommandEnvironment/group.security.policy -Dtest.src=/export/Scratch/olagneau/ws7161503/jdk8/tl/jdk/test/java/rmi/activation/CommandEnvironment -Dtest.classes=/export/Scratch/olagneau/bug7161503/rmitests/JTwork/classes/java/rmi/activation/CommandEnvironment sun.rmi.server.ActivationGroupInit">>
# Fri Jul 13 19:24:02 IST 2012:ExecGroup-0:out:Doctor retiring
RMID: getting a reference to the activation system
RMID: obtained a reference to the activation system
*** IOException in StreamPipe.run:
java.io.IOException: Pipe closed
        at java.io.PipedInputStream.checkStateForReceive(PipedInputStream.java:261)
        at java.io.PipedInputStream.receive(PipedInputStream.java:227)
        at java.io.PipedOutputStream.write(PipedOutputStream.java:149)
        at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:221)
        at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:291)
        at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:295)
        at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:141)
        at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:229)
        at java.io.BufferedWriter.flush(BufferedWriter.java:254)
        at StreamPipe.run(StreamPipe.java:61)
RMID: testlibrary finished shutting down rmid
RMID: rmid exited on shutdown request
ACTIVATION_LIBRARY: finished destroying rmid
RMID: removing rmid's old log file...
STATUS:Passed.
result: Passed. Execution successful