/usr/include/magics/ThreadSingleton.cc is in libmagics++-dev 2.18.15-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright 2007 European Centre for Medium-Range Weather Forecasts (ECMWF)
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.
******************************** LICENSE ********************************/
#ifndef marsmachine_H
#include "marsmachine.h"
#endif
#ifndef MagExceptions_H
#include "MagExceptions.h"
#endif
#ifndef ThreadSingleton_H
#include "ThreadSingleton.h"
#endif
template<class T> pthread_once_t ThreadSingleton<T>::once_ = PTHREAD_ONCE_INIT;
template<class T> pthread_key_t ThreadSingleton<T>::key_;
template<class T> ThreadSingleton<T>::ThreadSingleton()
{
}
template<class T> ThreadSingleton<T>::~ThreadSingleton()
{
}
template<class T>
T& ThreadSingleton<T>::instance()
{
pthread_once(&once_,init);
T* value = 0;
#ifdef DCE_THREADS
THRCALL(pthread_getspecific(key_,(void**)&value));
#else
value = (T*)pthread_getspecific(key_);
#endif
if(!value)
{
value = new T();
THRCALL(pthread_setspecific(key_,value));
}
return *value;
}
template<class T> void ThreadSingleton<T>::cleanUp(void* data)
{
delete (T*)data;
pthread_setspecific(key_,0);
}
template<class T> void ThreadSingleton<T>::init()
{
pthread_key_create(&key_,cleanUp);
}
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