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/* MPFR internal header related to thread-local variables.
Copyright 2005-2015 Free Software Foundation, Inc.
Contributed by the AriC and Caramel projects, INRIA.
This file is part of the GNU MPFR Library.
The GNU MPFR Library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or (at your
option) any later version.
The GNU MPFR Library 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 Lesser General Public
License for more details.
You should have received a copy of the GNU Lesser General Public License
along with the GNU MPFR Library; see the file COPYING.LESSER. If not, see
http://www.gnu.org/licenses/ or write to the Free Software Foundation, Inc.,
51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. */
#ifndef __MPFR_THREAD_H__
#define __MPFR_THREAD_H__
/* Note: Let's define MPFR_THREAD_ATTR even after a #error to make the
error message more visible (e.g. gcc doesn't immediately stop after
the #error line and outputs many error messages if MPFR_THREAD_ATTR
is not defined). But some compilers will just output a message and
may build MPFR "successfully" (without thread support). */
#ifndef MPFR_THREAD_ATTR
# ifdef MPFR_USE_THREAD_SAFE
# if defined(_MSC_VER)
# if defined(_WINDLL)
/* see http://msdn.microsoft.com/en-us/library/9w1sdazb%28v=vs.80%29.aspx */
# error "Can't build MPFR DLL as thread safe."
# define MPFR_THREAD_ATTR
# else
# define MPFR_THREAD_ATTR __declspec( thread )
# endif
# elif defined(MPFR_USE_C11_THREAD_SAFE)
# define MPFR_THREAD_ATTR _Thread_local
# else
# define MPFR_THREAD_ATTR __thread
# endif
# else
# define MPFR_THREAD_ATTR
# endif
#endif
#endif
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