If you want to make sure (for test purposes) that an object has been
garbage collected, have a look at
qadevOOo/runner/util/WaitUnreachable.java.
I created issues in IZ for each of the issues at:
61377: Java filter implementation imports documents with modified = true
http://qa.openoffice.org/issues/show_bug.cgi?id=61377
61378: Java filter implementation reloads documents as 'readonly'
http://qa.openoffice.org/issues/show_bug.cgi?id=61378
The java filter implementation which is attached to bug 61378
demonstrates both problems. I added the WaitUnreachable code as
suggested by sb, with the following slight changes:
public void waitUnreachable( String sObjectName, int nCount ) {
synchronized (this) {
obj = null;
}
maLogger.severe ( "Waiting for gc on object " + sObjectName + "
of type: " + msObjectType );
int i = 0;
while (queue.poll() == null && i < nCount ) {
maLogger.severe ( i++ + ": Running gc on object " +
sObjectName + " of type: " + msObjectType );
System.gc();
System.runFinalization();
byte[] dummy = new byte[1024];
}
maLogger.severe ( "Exiting wait on " + sObjectName + " of type:
" + msObjectType );
}
Then I call it with something like:
WaitUnreachable aWaiter = new WaitUnreachable (
xInputStream );
WaitUnreachable aWaiter2 = new WaitUnreachable (
aDescriptor[nInputStreamIndex].Value );
xInputStream = null;
aDescriptor[nInputStreamIndex].Value = null;
aDescriptor[nInputStreamIndex]= null;
aDescriptor = null;
aWaiter2.waitUnreachable(
"aDescriptor[nInputStreamIndex].Value", 5);
aWaiter.waitUnreachable( "xInputStream", 5 );
Which generates:
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: Waiting for gc on object aDescriptor[nInputStreamIndex].Value of
type: com.sun.star.uno.Any
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: 0: Running gc on object aDescriptor[nInputStreamIndex].Value of
type: com.sun.star.uno.Any
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: Exiting wait on aDescriptor[nInputStreamIndex].Value of type:
com.sun.star.uno.Any
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: Waiting for gc on object xInputStream of type: $Proxy19
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: 0: Running gc on object xInputStream of type: $Proxy19
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: 1: Running gc on object xInputStream of type: $Proxy19
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: 2: Running gc on object xInputStream of type: $Proxy19
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: 3: Running gc on object xInputStream of type: $Proxy19
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: 4: Running gc on object xInputStream of type: $Proxy19
Jan 30, 2006 4:57:51 PM LTSFilter.WaitUnreachable waitUnreachable
SEVERE: Exiting wait on xInputStream of type: $Proxy19
Without the limit, it loops forever. Anywhere I should look to see where
else it is referenced? I've also intermittently seen behaviour where
office will hang forever on the System.runFinalization() line, which
perhaps is due to our old friend, the SolarMutex.
Thanks!
Martin
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