+/*
+ * Copyright © 2012 Canonical Ltd.
+ *
+ * This program is free software: you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * Authored by: Thomas Guest <thomas.guest@canonical.com>
+ * Daniel van Vugt <daniel.van.vugt@canonical.com>
+ */
+
+#ifndef ANBOX_COMMON_WAIT_HANDLE_H_
+#define ANBOX_COMMON_WAIT_HANDLE_H_
+
+#include <chrono>
+#include <condition_variable>
+#include <mutex>
+
+namespace anbox {
+namespace common {
+struct WaitHandle {
+ public:
+ WaitHandle();
+ ~WaitHandle();
+
+ void expect_result();
+ void result_received();
+ void wait_for_all();
+ void wait_for_one();
+ void wait_for_pending(std::chrono::milliseconds limit);
+
+ bool has_result();
+ bool is_pending();
+
+ private:
+ std::mutex guard;
+ std::condition_variable wait_condition;
+
+ int expecting;
+ int received;
+};
+} // namespace common
+} // namespace anbox
+
+#endif