[OpenJDK 2D-Dev] [9] RFR JDK-8162461: Hang due to JNI up-call made whilst holding JNI critical lock.

[Jayathirth D V]

Fixed typo.

 

From: Jayathirth D V 
Sent: Wednesday, September 07, 2016 12:11 PM
To: Philip Race; 2d-dev
Subject: [OpenJDK 2D-Dev] [9] RFR JDK-8162461: Hang due to JNI up-call made whilst holding JNI critical lock.

 

Hi,

 

Please review the following fix in JDK9 at your convenience:

 

Bug : https://bugs.openjdk.java.net/browse/JDK-8162461 

 

Webrev : http://cr.openjdk.java.net/~jdv/8162461/webrev.00/ 

 

Issue : If we try to perform operations like reader.abort()/reader.dispose()/ reader.reset() in any of the IIOReadUpdateListener callbacks, JVM will throw deadlock error.

 

Root cause : We are making callbacks from native side to Java by holding some resources in JNI critical lock.

 

Solution : We have to release the JNI critical lock on the resources before we call Java function from native side. If we have JNI critical lock and we throw an Exception in that case also we should release the lock.

 

Thanks,

Jay

 
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