threadedmsg.hh
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/* -*- mia-c++ -*-
*
* This file is part of MIA - a toolbox for medical image analysis
* Copyright (c) Leipzig, Madrid 1999-2017 Gert Wollny
*
* MIA 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 MIA; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef mia_core_threadedmsg_hh
#define mia_core_threadedmsg_hh
#include <ostream>
#include <mia/core/defines.hh>
NS_MIA_BEGIN
class EXPORT_CORE CThreadMsgStream : public std::ostream
{
public:
CThreadMsgStream();
~CThreadMsgStream();
template <typename OS>
static void set_master_stream(OS& master);
private:
template <typename OS, typename placeholder> friend struct __dispatch_set_master_stream;
static void do_set_master_stream(std::ostream& master);
std::ostream& m_old;
};
template <typename OS, typename placeholder>
struct __dispatch_set_master_stream {
static void apply(OS& master)
{
CThreadMsgStream::do_set_master_stream(master);
}
};
template <typename placeholder>
struct __dispatch_set_master_stream<CThreadMsgStream, placeholder> {
static void apply(CThreadMsgStream& /*master*/)
{
static_assert(sizeof(placeholder) == 0,
"CThreadMsgStream can't be used as master stream because it would deadlock.");
}
};
template <typename OS>
void CThreadMsgStream::set_master_stream(OS& master)
{
__dispatch_set_master_stream<OS, int>::apply(master);
}
NS_MIA_END
#endif
CThreadMsgStream
This class is used to handle syncronizized output of logging output in a multi-threaded environment.
Definition threadedmsg.hh:45
CThreadMsgStream::set_master_stream
static void set_master_stream(OS &master)
Definition threadedmsg.hh:111
CThreadMsgStream::CThreadMsgStream
CThreadMsgStream()
CThreadMsgStream::~CThreadMsgStream
~CThreadMsgStream()
CThreadMsgStream::__dispatch_set_master_stream
friend struct __dispatch_set_master_stream
Definition threadedmsg.hh:67
defines.hh
NS_MIA_BEGIN
#define NS_MIA_BEGIN
conveniance define to start the mia namespace
Definition defines.hh:33
EXPORT_CORE
#define EXPORT_CORE
Macro to manage Visual C++ style dllimport/dllexport.
Definition defines.hh:101
NS_MIA_END
#define NS_MIA_END
conveniance define to end the mia namespace
Definition defines.hh:36