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+/*
+ * Copyright (C) 2018 Codership Oy <info@codership.com>
+ *
+ * This file is part of wsrep-lib.
+ *
+ * Wsrep-lib is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * Wsrep-lib 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with wsrep-lib. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef WSREP_MUTEX_HPP
+#define WSREP_MUTEX_HPP
+
+#include "compiler.hpp"
+#include "exception.hpp"
+
+
+#include <pthread.h>
+
+namespace wsrep
+{
+ /**
+ * Mutex interface.
+ */
+ class mutex
+ {
+ public:
+ mutex() { }
+ virtual ~mutex() { }
+ virtual void lock() = 0;
+ virtual void unlock() = 0;
+ /* Return native handle */
+ virtual void* native() = 0;
+ private:
+ mutex(const mutex& other);
+ mutex& operator=(const mutex& other);
+ };
+
+ // Default pthread implementation
+ class default_mutex : public wsrep::mutex
+ {
+ public:
+ default_mutex()
+ : wsrep::mutex(),
+ mutex_()
+ {
+ if (pthread_mutex_init(&mutex_, 0))
+ {
+ throw wsrep::runtime_error("mutex init failed");
+ }
+ }
+ ~default_mutex()
+ {
+ if (pthread_mutex_destroy(&mutex_)) ::abort();
+ }
+
+ void lock() WSREP_OVERRIDE
+ {
+ if (pthread_mutex_lock(&mutex_))
+ {
+ throw wsrep::runtime_error("mutex lock failed");
+ }
+ }
+
+ void unlock() WSREP_OVERRIDE
+ {
+ if (pthread_mutex_unlock(&mutex_))
+ {
+ throw wsrep::runtime_error("mutex unlock failed");
+ }
+ }
+
+ void* native() WSREP_OVERRIDE
+ {
+ return &mutex_;
+ }
+
+ private:
+ pthread_mutex_t mutex_;
+ };
+}
+
+#endif // WSREP_MUTEX_HPP