mysql5/mysql-5.7.27/client/dump/thread_specific_ptr.h

55 lines
1.3 KiB
C++

/*
Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
This program 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; version 2 of the License.
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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef THREAD_SPECIFIC_PTR_INCLUDED
#define THREAD_SPECIFIC_PTR_INCLUDED
#include "my_global.h"
#include "my_thread.h"
#include "my_thread_local.h"
namespace my_boost{
template <typename TPtr> class thread_specific_ptr
{
public:
thread_specific_ptr()
{
if (my_create_thread_local_key(&m_key, NULL))
throw std::exception();
}
~thread_specific_ptr()
{
my_delete_thread_local_key(m_key);
}
TPtr* get()
{
return (TPtr*)my_get_thread_local(m_key);
}
void reset(TPtr* new_pointer)
{
my_set_thread_local(m_key, new_pointer);
}
private:
thread_local_key_t m_key;
};
}
#endif