Object model changes to support 64bit.

Modify mirror objects so that references between them use an ObjectReference
value type rather than an Object* so that functionality to compress larger
references can be captured in the ObjectRefererence implementation.
ObjectReferences are 32bit and all other aspects of object layout remain as
they are currently.

Expand fields in objects holding pointers so they can hold 64bit pointers. Its
expected the size of these will come down by improving where we hold compiler
meta-data.
Stub out x86_64 architecture specific runtime implementation.
Modify OutputStream so that reads and writes are of unsigned quantities.
Make the use of portable or quick code more explicit.
Templatize AtomicInteger to support more than just int32_t as a type.
Add missing, and fix issues relating to, missing annotalysis information on the
mutator lock.
Refactor and share implementations for array copy between System and uses
elsewhere in the runtime.
Fix numerous 64bit build issues.

Change-Id: I1a5694c251a42c9eff71084dfdd4b51fff716822

1 files changed, 13 insertions, 4 deletions

diff --git a/runtime/monitor.h b/runtime/monitor.h
index 16e9410..85a8c48 100644
--- a/runtime/monitor.h
+++ b/runtime/monitor.h
@@ -24,7 +24,7 @@
 #include <list>
 #include <vector>
 
-#include "atomic_integer.h"
+#include "atomic.h"
 #include "base/mutex.h"
 #include "root_visitor.h"
 #include "sirt_ref.h"
@@ -40,6 +40,8 @@ class LockWord;
 class Thread;
 class StackVisitor;
 
+typedef uint32_t MonitorId;
+
 class Monitor {
  public:
   // The default number of spins that are done before thread suspension is used to forcibly inflate
@@ -108,6 +110,10 @@ class Monitor {
     return hash_code_.Load() != 0;
   }
 
+  MonitorId GetMonitorId() const {
+    return monitor_id_;
+  }
+
   static void InflateThinLocked(Thread* self, SirtRef<mirror::Object>& obj, LockWord lock_word,
                                 uint32_t hash_code) NO_THREAD_SAFETY_ANALYSIS;
 
@@ -115,7 +121,7 @@ class Monitor {
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
  private:
-  explicit Monitor(Thread* owner, mirror::Object* obj, int32_t hash_code)
+  explicit Monitor(Thread* self, Thread* owner, mirror::Object* obj, int32_t hash_code)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   // Install the monitor into its object, may fail if another thread installs a different monitor
@@ -162,7 +168,7 @@ class Monitor {
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
   // Translates the provided method and pc into its declaring class' source file and line number.
-  void TranslateLocation(const mirror::ArtMethod* method, uint32_t pc,
+  void TranslateLocation(mirror::ArtMethod* method, uint32_t pc,
                          const char** source_file, uint32_t* line_number) const
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
@@ -195,9 +201,12 @@ class Monitor {
   // Method and dex pc where the lock owner acquired the lock, used when lock
   // sampling is enabled. locking_method_ may be null if the lock is currently
   // unlocked, or if the lock is acquired by the system when the stack is empty.
-  const mirror::ArtMethod* locking_method_ GUARDED_BY(monitor_lock_);
+  mirror::ArtMethod* locking_method_ GUARDED_BY(monitor_lock_);
   uint32_t locking_dex_pc_ GUARDED_BY(monitor_lock_);
 
+  // The denser encoded version of this monitor as stored in the lock word.
+  MonitorId monitor_id_;
+
   friend class MonitorInfo;
   friend class MonitorList;
   friend class mirror::Object;