/usr/include/Poco/SharedMemory_WIN32.h is in libpoco-dev 1.3.6p1-4.
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// SharedMemoryImpl.h
//
// $Id: //poco/1.3/Foundation/include/Poco/SharedMemory_WIN32.h#2 $
//
// Library: Foundation
// Package: Processes
// Module: SharedMemoryImpl
//
// Definition of the SharedMemoryImpl class.
//
// Copyright (c) 2007, 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_SharedMemoryImpl_INCLUDED
#define Foundation_SharedMemoryImpl_INCLUDED
#include "Poco/Poco.h"
#include "Poco/SharedMemory.h"
#include "Poco/RefCountedObject.h"
namespace Poco {
class Foundation_API SharedMemoryImpl: public RefCountedObject
/// Shared memory implementation for Windows platforms.
{
public:
SharedMemoryImpl(const std::string& name, std::size_t size, SharedMemory::AccessMode mode, const void* addrHint, bool server);
/// Creates or connects to a shared memory object with the given name.
///
/// For maximum portability, name should be a valid Unix filename and not
/// contain any slashes or backslashes.
///
/// An address hint can be passed to the system, specifying the desired
/// start address of the shared memory area. Whether the hint
/// is actually honored is, however, up to the system. Windows platform
/// will generally ignore the hint.
SharedMemoryImpl(const Poco::File& file, SharedMemory::AccessMode mode, const void* addrHint);
/// Maps the entire contents of file into a shared memory segment.
///
/// An address hint can be passed to the system, specifying the desired
/// start address of the shared memory area. Whether the hint
/// is actually honored is, however, up to the system. Windows platform
/// will generally ignore the hint.
char* begin() const;
/// Returns the beginn address of the SharedMemory segment. Will be null for illegal segments.
char* end() const;
/// Points past the last byte of the end address of the SharedMemory segment. Will be null for illegal segments.
protected:
void map();
/// Maps the shared memory object.
void unmap();
/// Unmaps the shared memory object.
void close();
/// Releases the handle for the shared memory segment.
~SharedMemoryImpl();
/// Destroys the SharedMemoryImpl.
private:
SharedMemoryImpl();
SharedMemoryImpl(const SharedMemoryImpl&);
SharedMemoryImpl& operator = (const SharedMemoryImpl&);
std::string _name;
HANDLE _memHandle;
HANDLE _fileHandle;
DWORD _size;
DWORD _mode;
char* _address;
};
//
// inlines
//
inline char* SharedMemoryImpl::begin() const
{
return _address;
}
inline char* SharedMemoryImpl::end() const
{
return _address + _size;
}
} // namespace Poco
#endif // Foundation_SharedMemoryImpl_INCLUDED
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