Mon, 21 Aug 2017 11:34:41 -0400
6651256: jstack: DeleteGlobalRef method call doesn't lead to descreasing of global refs count shown by jstack
Summary: jni_DeleteGlobalRef does not really release the jni handle, instead, set the handle point to JNIHandles::_deleted_handle which holds an oop instance (java/lang/Object) in Java heap and never be GC'ed. When counting number of global reference, it counts all the handles on the chain list, which includes the already deleted ones.
Reviewed-by: zgu, sla, coleenp
Contributed-by: yumin.qi@oracle.com
aoqi@0 | 1 | README: |
aoqi@0 | 2 | This file should be located at the top of the hotspot Mercurial repository. |
aoqi@0 | 3 | |
aoqi@0 | 4 | See http://openjdk.java.net/ for more information about the OpenJDK. |
aoqi@0 | 5 | |
aoqi@0 | 6 | See ../README-builds.html for complete details on build machine requirements. |
aoqi@0 | 7 | |
aoqi@0 | 8 | Simple Build Instructions: |
aoqi@0 | 9 | |
aoqi@0 | 10 | cd make && gnumake |
aoqi@0 | 11 | |
aoqi@0 | 12 | The files that will be imported into the jdk build will be in the "build" |
aoqi@0 | 13 | directory. |
aoqi@0 | 14 |