Initial commit

common/mutex.cpp

@@ -0,0 +1,77 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "common/debug.h"
+#include "common/mutex.h"
+#include "common/system.h"
+
+namespace Common {
+
+Mutex::Mutex() {
+	assert(g_system);
+	_mutex = g_system->createMutex();
+}
+
+Mutex::~Mutex() {
+	delete _mutex;
+}
+
+bool Mutex::lock() {
+	return _mutex->lock();
+}
+
+bool Mutex::unlock() {
+	return _mutex->unlock();
+}
+
+
+#pragma mark -
+
+
+StackLock::StackLock(MutexInternal *mutex, const char *mutexName)
+	: _mutex(mutex), _mutexName(mutexName) {
+	lock();
+}
+
+StackLock::StackLock(const Mutex &mutex, const char *mutexName)
+	: _mutex(mutex._mutex), _mutexName(mutexName) {
+	lock();
+}
+
+StackLock::~StackLock() {
+	unlock();
+}
+
+bool StackLock::lock() {
+	if (_mutexName != nullptr)
+		debug(6, "Locking mutex %s", _mutexName);
+
+	return _mutex->lock();
+}
+
+bool StackLock::unlock() {
+	if (_mutexName != nullptr)
+		debug(6, "Unlocking mutex %s", _mutexName);
+
+	return _mutex->unlock();
+}
+
+} // End of namespace Common