logging fixes for last pre-ZBB JDK7-TL snapshot (6977677, 7016208, 7041595)

[Daniel D. Daugherty]

Greetings,

The final pre-ZBB JDK7-TL snapshot is happening @ 1700 PT on
Monday, May 14, 2011. This snapshot is targeted for JDK7-B143
or JDK7-B144 (I'm not sure which). Yes, we're still trying to
figure out how to merge our JDK & HotSpot Express processes
with Oracle processes. Please be patient while we iron out the
wrinkles...

I have three bug fixes for the java.util.logging area:

    6977677 3/2 Deadlock on logging subsystem initialization
    7016208 4/3 null sometimes returned by java.util.logging.Logger.
                getLogger(String name) in -server -Xcomp
    7041595 4/4 add lost test for 6487638

6977677 is a deadlock between java.util.logging.Logger.getLogger()
and LogManager.<clinit> via a PlatformLogger. This fix involves:

    src/share/classes/java/util/logging/Logger.java
    test/java/util/logging/LoggingDeadlock4.java

Mandy, I would like your review of the above bug fix.

7016208 is an unexpected null return from Logger.getLogger() due to
the lack of a strong reference. This fix involves:

    src/share/classes/java/util/logging/LogManager.java

Tom R., I would like your review of the above bug fix.

7041595 is just pushing a Logging deadlock test that got lost a
long time ago. This fix involves:

    test/java/util/logging/LoggingDeadlock3.java
    test/java/util/logging/LoggingDeadlock3.props

Because I'm fixing a deadlock in 6977677, I wanted to make sure
that this Logging deadlock test was back in the mix.

Here is the webrev URL:

    http://cr.openjdk.java.net/~dcubed/logging-batch-20110515-webrev/0/

The comments that I added to the code changes should make the
reason(s) for the code changes pretty self explanatory.

These changes have been run through JPRT and pass the "jdk_util"
tests on all platforms. I have also run SDK/JDK logging tests
and the VM/NSK logging tests on the following configs:

    Solaris X86 * {Client VM, Server VM} product * {-Xmixed, -Xcomp}
    WinXP * {Client VM, Server VM} product * {-Xmixed, -Xcomp}

Here is the summary from Solaris X86:

Summary of Test Results (8 result dirs)
=========================================
    all executed: 2264  all passed: 2264  all ignored: 0  all failed: 0
    time: 0 hour(s) 17 minute(s)

Here is the partial summary (6 of 8) from WinXP:

Summary of Test Results (6 result dirs)
=========================================
    all executed: 1160  all passed: 1160  all ignored: 0  all failed: 0
    time: 1 hour(s) 0 minute(s)

The last two VM/NSK test runs are still going; yes, WinXP is slower than
Solaris X86...

Thanks, in advance, for any reviews.

Dan