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From "Alexey Varlamov" <alexey.v.varla...@gmail.com>
Subject Re: [general][qa] Tried to use harmony on a small in-house project; issues follow
Date Wed, 23 May 2007 05:55:16 GMT
FYI, I've reported the jMock issue [1] and they already checked the fix in.

[1] http://jira.codehaus.org/browse/JMOCK-126

2007/5/21, Alexey Varlamov <alexey.v.varlamov@gmail.com>:
> Hi Alex,
>
> 2007/5/21, Alex Grigorovich <alex.grigorovich@gmail.com>:
> > Hi!
> >
> > I thought you may be interested: here's a recollection of problems I
> > have encountered while trying to use Harmony for a small project at
> > work.
>
> Thanks for the feedback, we're quite interested indeed.
>
> > First, jmock-based unit tests fail when run under Harmony's JVM.
> > Compiler doesn't seem to matter: both sun's and harmony's work. I have
> > attached a sample program which reproduces the following error:
> [skipped]
> This uncovers a bug in JMock2, matching reflection method instances
> via identity operator ('==' vs equals()), see
> jmock2/src/org/jmock/internal/matcher/MethodMatcher.java:18
> I will report this issue to JMock developers until you beat me to it ;)
>
> > Second, our java.nio-based network code which works on Sun's JVM
> > throws a SockectExcepion on innocent-looking code:
> > java.net.SocketException
> >        at org.apache.harmony.luni.platform.OSNetworkSystem.select(OSNetworkSystem.java:312)
> >        at org.apache.harmony.nio.internal.SelectorImpl.selectInternal(SelectorImpl.java)
> >        at org.apache.harmony.nio.internal.SelectorImpl.select(SelectorImpl.java:167)
> >        at com.shamrock.smf.niosmpp.net.SelectorHandler.run(SelectorHandler.java:156)
> >
> > These exceptions don't seem to affect the application though. They
> > seem to happen after setting OP_WRITE on each interesting selection
> > key. Relevant portion of source code looks like this (unfortunately I
> > cannot provide a short runnable example):
> >
> >       while (true) {
> >            try {
> >                /* register new channels etc. */
> >                synchronized(this.writableKeys) {
> >                    /* for each key in writableKeys */
> >                    if (key.isValid()) {
> >                        key.interestOps(key.interestOps() |
> > SelectionKey.OP_WRITE);
> >                    }
> >                }
> >                selector.select(selectTimeout);
> >                Set set = selector.selectedKeys();
> >                /* process selected keys */
> >                set.clear();
> >            }
> >        }
> >
> > However, the problem might as well be in buggy application code. Any
> > ideas on how to debug this?
> >
> I did not look closer here, we have a few decent networking experts on
> the list, just wait them to speak up. BTW, do you mind to file a bug
> report to JIRA for this issue?
>
> >
> > Third, VM hard-codes default character set to iso-8859-1 instead of
> > using process' locale settings. Every UTF-8 user then has to manually
> > set file.encoding system property, or otherwise get garbage on console
> > when output does not fit in ASCII.
> Yep, there is already a bunch of entries in our bug tracker depending
> on this same issue, it must be fixed soon.
>
> > Lastly, is there a native javac adapter for ant? One can use
> > build.compiler=extJavac or write a custom CompilerAdapter, but a
> > drop-in replacement for Sun's javac would be nice. Google even finds
> > an implementation of com.sun.tools.javac.Main in harmony's subversion
> > repo, but it seems to have been removed later (for trademark
> > reasons?).
> Sure, there is jdktools subproject which currently provides javac,
> javah, keytool & jarsigner, and there is universal native starter for
> all of them. The removed sources were mere duplicates between
> "classlib" and "jdktools" subprojects.
> Seems you've tried M1 binary snapshot, you've probably chosen a JRE
> download? I believe JDK snapshots includes javac executable among
> other tools...
>
> > Harmony & OS details:
> >
> > $ java -version
> > Apache Harmony Launcher : (c) Copyright 1991, 2006 The Apache Software
> > Foundation or its licensors, as applicable.
> > java version "1.5.0"
> > pre-alpha : not complete or compatible
> > svn = r533500, (Apr 30 2007), Linux/ia32/gcc 4.1.0, release build
> > http://incubator.apache.org/harmony
> >
> > OS: Debian linux 4.0, kernel: 2.6.18-4-686 #1 SMP, libc-2.3.6
> >
> > Thank you.
> >
> > --
> > Alexey Grigorovich
> >
> >
>
> Stay tuned, Harmony advances in a good pace. So hope to hear from you
> again once in a while ;)
>
> --
> Alexey Varlamov
>

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