mduigou [Wed, 30 May 2012 22:18:37 -0700] rev 12859
7126277: Alternative String hashing implementation
Summary: All of the hashing based Map implementations: HashMap, Hashtable, LinkedHashMap, WeakHashMap and ConcurrentHashMap are modified to use an enhanced hashing algorithm for string keys when the capacity of the hash table has ever grown beyond 512 entries. The enhanced hashing implementation uses the murmur3 hashing algorithm along with random hash seeds and index masks. These enhancements mitigate cases where colliding String hash values could result in a performance bottleneck.
Reviewed-by: alanb, forax, dl
mduigou [Thu, 17 May 2012 10:06:19 -0700] rev 12858
6924259: Remove offset and count fields from java.lang.String
Summary: Removes the use of shared character array buffers by String along with the two fields needed to support the use of shared buffers.
Reviewed-by: alanb, mduigou, forax, briangoetz
Contributed-by: brian.doherty@oracle.com
ksrini [Tue, 29 May 2012 14:56:48 -0700] rev 12857
7168401: pack200 does not produce a compatible pack file for JDK7 classes if indy is not present
Reviewed-by: jrose
khazra [Tue, 29 May 2012 13:16:17 -0700] rev 12856
7171591: getDefaultScopeID() in src/solaris/native/java/net/net_util_md.c should return a value
Summary: Use CHECK_NULL_RETURN instead of CHECK_NULL
Reviewed-by: alanb