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Diffstat (limited to 'src/dpl/core/include/dpl/scoped_resource.h')
-rw-r--r-- | src/dpl/core/include/dpl/scoped_resource.h | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/dpl/core/include/dpl/scoped_resource.h b/src/dpl/core/include/dpl/scoped_resource.h new file mode 100644 index 0000000..c024684 --- /dev/null +++ b/src/dpl/core/include/dpl/scoped_resource.h @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +/* + * @file scoped_resource.h + * @author Piotr Marcinkiewicz (p.marcinkiew@samsung.com) + * @version 1.0 + * @brief This file is the implementation file of scoped resource pattern + */ +#ifndef CCHECKER_SCOPED_RESOURCE_H +#define CCHECKER_SCOPED_RESOURCE_H + +#include <dpl/noncopyable.h> + +namespace CCHECKER { +template<typename ClassPolicy> +class ScopedResource : + private Noncopyable +{ + public: + typedef typename ClassPolicy::Type ValueType; + typedef ScopedResource<ClassPolicy> ThisType; + + protected: + ValueType m_value; + + public: + explicit ScopedResource(ValueType value) : m_value(value) { } + + ~ScopedResource() + { + ClassPolicy::Destroy(m_value); + } + + ValueType Get() const + { + return m_value; + } + + void Reset(ValueType value = ClassPolicy::NullValue()) + { + ClassPolicy::Destroy(m_value); + m_value = value; + } + + ValueType Release() + { + ValueType value = m_value; + m_value = ClassPolicy::NullValue(); + return value; + } + typedef ValueType ThisType::*UnknownBoolType; + + operator UnknownBoolType() const + { + return m_value == ClassPolicy::NullValue() ? + 0 : //0 is valid here because it converts to false + &ThisType::m_value; //it converts to true + } + + bool operator !() const + { + return m_value == ClassPolicy::NullValue(); + } +}; +} // namespace CCHECKER + +#endif // CCHECKER_SCOPED_RESOURCE_H |