Create separate Android.mk for main build targets

The runtime, compiler, dex2oat, and oatdump now are in seperate trees
to prevent dependency creep.  They can now be individually built
without rebuilding the rest of the art projects. dalvikvm and jdwpspy
were already this way. Builds in the art directory should behave as
before, building everything including tests.

Change-Id: Ic6b1151e5ed0f823c3dd301afd2b13eb2d8feb81

1 files changed, 55 insertions, 0 deletions

diff --git a/runtime/barrier.h b/runtime/barrier.h
new file mode 100644
index 0000000000..2b0429a7c2
--- /dev/null
+++ b/runtime/barrier.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef ART_SRC_BARRIER_H_
+#define ART_SRC_BARRIER_H_
+
+#include "base/mutex.h"
+#include "locks.h"
+#include "UniquePtr.h"
+
+namespace art {
+
+class Barrier {
+ public:
+  Barrier(int count);
+  virtual ~Barrier();
+
+  // Pass through the barrier, decrements the count but does not block.
+  void Pass(Thread* self);
+
+  // Wait on the barrier, decrement the count.
+  void Wait(Thread* self);
+
+  // Set the count to a new value, if the value is 0 then everyone waiting on the condition
+  // variable is resumed.
+  void Init(Thread* self, int count);
+
+  // Increment the count by delta, wait on condition if count is non zero.
+  void Increment(Thread* self, int delta);
+
+ private:
+  void SetCountLocked(Thread* self, int count) EXCLUSIVE_LOCKS_REQUIRED(lock_);
+
+  // Counter, when this reaches 0 all people blocked on the barrier are signalled.
+  int count_ GUARDED_BY(lock_);
+
+  Mutex lock_ DEFAULT_MUTEX_ACQUIRED_AFTER;
+  ConditionVariable condition_ GUARDED_BY(lock_);
+};
+
+}  // namespace art
+#endif  // ART_SRC_GC_BARRIER_H_