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, 3 insertions, 3 deletions

diff --git a/runtime/base/mutex.cc b/runtime/base/mutex.cc
index 05e3a8327e..ff72d16908 100644
--- a/runtime/base/mutex.cc
+++ b/runtime/base/mutex.cc
@@ -47,7 +47,7 @@ static bool ComputeRelativeTimeSpec(timespec* result_ts, const timespec& lhs, co
 
 struct AllMutexData {
   // A guard for all_mutexes_ that's not a mutex (Mutexes must CAS to acquire and busy wait).
-  AtomicInteger all_mutexes_guard;
+  Atomic<const BaseMutex*> all_mutexes_guard;
   // All created mutexes guarded by all_mutexes_guard_.
   std::set<BaseMutex*>* all_mutexes;
   AllMutexData() : all_mutexes(NULL) {}
@@ -57,12 +57,12 @@ static struct AllMutexData gAllMutexData[kAllMutexDataSize];
 class ScopedAllMutexesLock {
  public:
   explicit ScopedAllMutexesLock(const BaseMutex* mutex) : mutex_(mutex) {
-    while (!gAllMutexData->all_mutexes_guard.CompareAndSwap(0, reinterpret_cast<int32_t>(mutex))) {
+    while (!gAllMutexData->all_mutexes_guard.CompareAndSwap(0, mutex)) {
       NanoSleep(100);
     }
   }
   ~ScopedAllMutexesLock() {
-    while (!gAllMutexData->all_mutexes_guard.CompareAndSwap(reinterpret_cast<int32_t>(mutex_), 0)) {
+    while (!gAllMutexData->all_mutexes_guard.CompareAndSwap(mutex_, 0)) {
       NanoSleep(100);
     }
   }