moved winix directories to winixd subdirectory

git-svn-id: svn://ttmath.org/publicrep/winix/trunk@1027 e52654a7-88a9-db11-a3e9-0013d4bc506e

winixd/core/synchro.cpp

@@ -0,0 +1,107 @@
+/*
+ * This file is a part of Winix
+ * and is distributed under the 2-Clause BSD licence.
+ * Author: Tomasz Sowa <t.sowa@ttmath.org>
+ */
+
+/* 
+ * Copyright (c) 2010-2014, Tomasz Sowa
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ * 
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ * 
+ */
+
+#include <errno.h>
+#include "synchro.h"
+
+
+
+namespace Winix
+{
+
+
+
+Synchro::Synchro()
+{
+	was_stop_signal = false;
+
+#ifdef __FreeBSD__
+	/*
+	 * on FreeBSD a pthread's pthread_mutex_lock() is checking for deadlocks by default
+	 */
+	mutex = PTHREAD_MUTEX_INITIALIZER;
+#else
+	pthread_mutexattr_t attr;
+
+	pthread_mutexattr_init(&attr);
+	pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK);
+	pthread_mutex_init(&mutex, &attr);
+	pthread_mutexattr_destroy(&attr);
+#endif
+}
+
+
+
+bool Synchro::Lock()
+{
+	int res = pthread_mutex_lock(&mutex);
+
+	if( res == 0 )
+	{
+		ref[pthread_self()] = 1;
+		return true;
+	}
+	else
+	if( res == EDEADLK )
+	{
+		// Lock() method in this thread was called before
+		ref[pthread_self()] += 1;
+		return true;
+	}
+
+return false;
+}
+
+
+
+void Synchro::Unlock()
+{
+	int & r = ref[pthread_self()];
+
+	if( r > 1 )
+	{
+		r -= 1;
+	}
+	else
+	if( r == 1 )
+	{
+		pthread_mutex_unlock(&mutex);
+	}
+}
+
+
+
+
+} // namespace Winix
+