Adds vsoc::LockGuard
It's roughly equivalent to std::lock_guard for vsoc locks
Test: builds
Change-Id: Icc2488b7f013d978ec710fbb42e0f027432ef322
diff --git a/common/vsoc/lib/lock_guard.h b/common/vsoc/lib/lock_guard.h
new file mode 100644
index 0000000..c1c96fd
--- /dev/null
+++ b/common/vsoc/lib/lock_guard.h
@@ -0,0 +1,43 @@
+#pragma once
+
+/*
+ * Copyright (C) 2017 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.
+ */
+
+namespace vsoc {
+
+/*
+ * Implements std::lock_guard like functionality for the vsoc locks.
+ */
+
+template <typename Lock>
+class LockGuard {
+ public:
+ explicit LockGuard(Lock* lock) : lock_(lock) {
+ lock_->Lock();
+ }
+
+ ~LockGuard() {
+ lock_->Unlock();
+ }
+
+ LockGuard(const LockGuard<Lock>&) = delete;
+ LockGuard<Lock>& operator=(const LockGuard<Lock>&) = delete;
+
+ private:
+ Lock* lock_;
+};
+
+} // namespace vsoc
