hg: jdk9/hs-comp/hotspot: 8132980: Improve stability of whitebox methods getCodeBlob and freeCodeBlob

[igor.ignatyev at oracle.com]

Changeset: 87a55af2ff28
Author:    kzhaldyb
Date:      2015-09-11 16:11 +0300
URL:       http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/87a55af2ff28

8132980: Improve stability of whitebox methods getCodeBlob and freeCodeBlob
Summary: Added checks for negative and null size and address values (where applicable) for getCodeBlob, allocateCodeBlob and freeCodeBlob, added regression test
Reviewed-by: iignatyev

! src/share/vm/prims/whitebox.cpp
! test/testlibrary/jdk/test/lib/Utils.java
+ test/testlibrary_tests/whitebox/BlobSanityTest.java