<AWT Dev>  Review Request: 8033367 [macosx] Appletviewer was broken in jdk8 b124
anthony.petrov at oracle.com
Mon Jun 16 18:32:17 UTC 2014
Thanks for the update. The fix looks fine.
On 6/16/2014 3:31 PM, Petr Pchelko wrote:
> Hello, Anthony.
> Thanks for the review, the new version is here:
> I've also made eawt Application start AppKit, I've forgot about this one initially.
> Now I've made a grep over all loadLibrary("awt") usages and is looks like it's
> replaced with getDefaultToolkit in all places we need.
> With best regards. Petr.
> On 03 июня 2014 г., at 17:59, Anthony Petrov <anthony.petrov at oracle.com> wrote:
>> Hi Petr,
>> The fix looks good to me. One minor nit: every file that includes AWT_debug.h will contain its own copy of the ShouldPrintVerboseDebugging() function and the debug flag. Could we have only one copy instead?
>> best regards,
>> On 6/3/2014 3:18 PM, Petr Pchelko wrote:
>>> Hello, AWT Team.
>>> Please review a little fix for the issue:
>>> The fix is available here:
>>> The problem:
>>> We were doing too much in JNI_OnLoad. Loading many classes, making sync calls to Appkit thread, loading classes and native libs from Appkit thread and so on.
>>> This was causing deadlocks and crashes that we've workarounded for 8. But for 9 I've rewritten the AWT startup code to make JNI_OnLoad do a bit less work.
>>> The solution:
>>> Now loading awt native lib does not trigger loading AppKit and starting NSApplication. Instead we just load a library and tell Cocoa we are going to be multithreaded.
>>> We start Appkit when Toolkit is created, so now we avoid problems with deadlocks on runtime lock.
>>> An issue with the fix:
>>> I've made GraphicsEnvironment also load AppKit, because we use an NSView for a scratch surface in an OpenGL context. Really this is quite likely not needed as we are
>>> (should be) using FBOs for offscreen rendering. But getting rid of an NSView-based scratch surface is a separate big project, so I'll file a bug for it and now let's load
>>> Appkit when GraphicsEnvironment is initialized too.
>>> I have run all JCK, all regression tests, sanity-tested JFX interop and SWT interop, checked applets and webstart, tested headless mode. Everything seems to work fine,
>>> but anyway this fix is extremely risky. But this should be done if we want to avoid a problems like JDK-8033367 or JDK-8031050.
>>> Thank you.
>>> With best regards. Petr.
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