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/******************************************************************************
This file is part of PyTango (http://pytango.rtfd.io)
Copyright 2006-2012 CELLS / ALBA Synchrotron, Bellaterra, Spain
Copyright 2013-2014 European Synchrotron Radiation Facility, Grenoble, France
Distributed under the terms of the GNU Lesser General Public License,
either version 3 of the License, or (at your option) any later version.
See LICENSE.txt for more info.
******************************************************************************/
#pragma once
#include <boost/python.hpp>
#include <tango.h>
#include "defs.h"
#include "pyutils.h"
#include "from_py.h"
#include "to_py.h"
#include "tgutils.h"
/// Get the python Global Interpret Lock
class AutoPythonGIL
{
PyGILState_STATE m_gstate;
/**
* Check python. Before acquiring python GIL check if python as not been
* shutdown. If this is the case then the best we can do here is throw an
* exception to try to prevent the PyTango from calling python code
**/
inline void check_python()
{
if(!Py_IsInitialized())
{
Tango::Except::throw_exception(
"AutoPythonGIL_PythonShutdown",
"Trying to execute python code when python interpreter as shutdown.",
"AutoPythonGIL::check_python");
}
}
public:
inline AutoPythonGIL(bool safe=true)
{
if (safe) check_python();
m_gstate = PyGILState_Ensure();
}
inline ~AutoPythonGIL() { PyGILState_Release(m_gstate); }
};
/**
* Translate a double into a timeval structure
*
* @param[out] tv timeval structure to be filled with the time
* @param[in] t a double representing the time
*/
inline void double2timeval(struct timeval &tv, double t)
{
double sec = floor(t);
#ifdef WIN32
tv.tv_usec = (long)((t-sec)*1.0E6);
tv.tv_sec = (long)(sec);
#else
tv.tv_usec = (time_t)((t-sec)*1.0E6);
tv.tv_sec = (suseconds_t)(sec);
#endif
}
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