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, 63 insertions, 0 deletions

diff --git a/runtime/barrier.cc b/runtime/barrier.cc
new file mode 100644
index 0000000..250d468
--- /dev/null
+++ b/runtime/barrier.cc
@@ -0,0 +1,63 @@
+/*
+ * 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.
+ */
+
+#include "barrier.h"
+
+#include "base/mutex.h"
+#include "thread.h"
+
+namespace art {
+
+Barrier::Barrier(int count)
+    : count_(count),
+      lock_("GC barrier lock"),
+      condition_("GC barrier condition", lock_) {
+}
+
+void Barrier::Pass(Thread* self) {
+  MutexLock mu(self, lock_);
+  SetCountLocked(self, count_ - 1);
+}
+
+void Barrier::Wait(Thread* self) {
+  Increment(self, -1);
+}
+
+void Barrier::Init(Thread* self, int count) {
+  MutexLock mu(self, lock_);
+  SetCountLocked(self, count);
+}
+
+void Barrier::Increment(Thread* self, int delta) {
+  MutexLock mu(self, lock_);
+  SetCountLocked(self, count_ + delta);
+  if (count_ != 0) {
+    condition_.Wait(self);
+  }
+}
+
+void Barrier::SetCountLocked(Thread* self, int count) {
+  count_ = count;
+  if (count_ == 0) {
+    condition_.Broadcast(self);
+  }
+}
+
+Barrier::~Barrier() {
+  CHECK(!count_) << "Attempted to destroy barrier with non zero count";
+}
+
+}