trunk/branch integration: new files

Foundation/include/Poco/RWLock_Android.h

@@ -0,0 +1,119 @@
+//
+// RWLock_Android.h
+//
+// $Id: //poco/1.4/Foundation/include/Poco/RWLock_Android.h#1 $
+//
+// Library: Foundation
+// Package: Threading
+// Module:  RWLock
+//
+// Definition of the RWLockImpl class for Android Threads.
+//
+// Copyright (c) 2004-2011, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// Permission is hereby granted, free of charge, to any person or organization
+// obtaining a copy of the software and accompanying documentation covered by
+// this license (the "Software") to use, reproduce, display, distribute,
+// execute, and transmit the Software, and to prepare derivative works of the
+// Software, and to permit third-parties to whom the Software is furnished to
+// do so, all subject to the following:
+// 
+// The copyright notices in the Software and this entire statement, including
+// the above license grant, this restriction and the following disclaimer,
+// must be included in all copies of the Software, in whole or in part, and
+// all derivative works of the Software, unless such copies or derivative
+// works are solely in the form of machine-executable object code generated by
+// a source language processor.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
+// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
+// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
+// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+//
+
+
+#ifndef Foundation_RWLock_Android_INCLUDED
+#define Foundation_RWLock_Android_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include "Poco/Exception.h"
+#include <pthread.h>
+#include <errno.h>
+
+
+namespace Poco {
+
+
+class Foundation_API RWLockImpl
+{
+protected:
+        RWLockImpl();
+        ~RWLockImpl();
+        void readLockImpl();
+        bool tryReadLockImpl();
+        void writeLockImpl();
+        bool tryWriteLockImpl();
+        void unlockImpl();
+        
+private:
+        pthread_mutex_t _mutex;
+};
+
+
+//
+// inlines
+//
+inline void RWLockImpl::readLockImpl()
+{
+        if (pthread_mutex_lock(&_mutex)) 
+                throw SystemException("cannot lock reader/writer lock");
+}
+
+
+inline bool RWLockImpl::tryReadLockImpl()
+{
+        int rc = pthread_mutex_trylock(&_mutex);
+        if (rc == 0)
+                return true;
+        else if (rc == EBUSY)
+                return false;
+        else
+                throw SystemException("cannot lock reader/writer lock");
+}
+
+
+inline void RWLockImpl::writeLockImpl()
+{
+        if (pthread_mutex_lock(&_mutex)) 
+                throw SystemException("cannot lock reader/writer lock");
+}
+
+
+inline bool RWLockImpl::tryWriteLockImpl()
+{
+        int rc = pthread_mutex_trylock(&_mutex);
+        if (rc == 0)
+                return true;
+        else if (rc == EBUSY)
+                return false;
+        else
+                throw SystemException("cannot lock reader/writer lock");
+}
+
+
+inline void RWLockImpl::unlockImpl()
+{
+        if (pthread_mutex_unlock(&_mutex))
+                throw SystemException("cannot unlock reader/writer lock");
+}
+
+
+} // namespace Poco
+
+
+#endif // Foundation_RWLock_Android_INCLUDED