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, 79 insertions, 0 deletions

diff --git a/runtime/atomic_integer.h b/runtime/atomic_integer.h
new file mode 100644
index 0000000000..c4a8de9817
--- /dev/null
+++ b/runtime/atomic_integer.h
@@ -0,0 +1,79 @@
+/*
+ * 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_ATOMIC_INTEGER_H_
+#define ART_SRC_ATOMIC_INTEGER_H_
+
+#include "cutils/atomic.h"
+#include "cutils/atomic-inline.h"
+
+namespace art {
+
+class AtomicInteger {
+ public:
+  AtomicInteger() : value_(0) { }
+
+  AtomicInteger(int32_t value) : value_(value) { }
+
+  // Unsafe = operator for non atomic operations on the integer.
+  AtomicInteger& operator = (int32_t new_value) {
+    value_ = new_value;
+    return *this;
+  }
+
+  operator int32_t () const {
+    return value_;
+  }
+
+  int32_t get() const {
+    return value_;
+  }
+
+  int32_t operator += (const int32_t value) {
+    return android_atomic_add(value, &value_);
+  }
+
+  int32_t operator -= (const int32_t value) {
+    return android_atomic_add(-value, &value_);
+  }
+
+  int32_t operator |= (const int32_t value) {
+    return android_atomic_or(value, &value_);
+  }
+
+  int32_t operator &= (const int32_t value) {
+    return android_atomic_and(-value, &value_);
+  }
+
+  int32_t operator ++ () {
+    return android_atomic_inc(&value_) + 1;
+  }
+
+  int32_t operator -- () {
+    return android_atomic_dec(&value_) - 1;
+  }
+
+  bool CompareAndSwap(int expected_value, int new_value) {
+    bool success = android_atomic_cas(expected_value, new_value, &value_) == 0;
+    return success;
+  }
+ private:
+  volatile int32_t value_;
+};
+
+}
+
+#endif  // ART_SRC_ATOMIC_INTEGER_H_