commit b8a0b94735f188bc739e4c55479c37699006b881
author Ian Rogers <irogers@google.com> Tue Aug 20 18:09:52 2013 -0700
committer Ian Rogers <irogers@google.com> Tue Aug 20 18:11:09 2013 -0700
tree 6620437e5019924f9da7b1c9a6408cf4a113b3e5
parent aa836f7fa2ef359cf8ec1ef98d924f7971ba8352

Switch JNI globals lock to reader-writer.

Also, verifier rejected classes lock. These locks show as contended during
dex2oat, however, they're commonly only read access is required.

Change-Id: If8bb834cc69cd8c26494c87fb7f7b20d4e41cdfd

runtime/verifier/method_verifier.h

diff --git a/runtime/verifier/method_verifier.h b/runtime/verifier/method_verifier.h
index d6bebc6..70442fb 100644
--- a/runtime/verifier/method_verifier.h
+++ b/runtime/verifier/method_verifier.h
@@ -661,7 +661,7 @@
                            const PcToConcreteMethodMap* pc_method_map)
         LOCKS_EXCLUDED(devirt_maps_lock_);
   typedef std::set<ClassReference> RejectedClassesTable;
-  static Mutex* rejected_classes_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
+  static ReaderWriterMutex* rejected_classes_lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
   static RejectedClassesTable* rejected_classes_ GUARDED_BY(rejected_classes_lock_);
 
   static void AddRejectedClass(ClassReference ref)