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/*
* Copyright (C) 2009-2011 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#ifndef INCLUDE_git_thread_utils_h__
#define INCLUDE_git_thread_utils_h__
/*
* How TLS works is compiler+platform dependant
* Sources: http://en.wikipedia.org/wiki/Thread-Specific_Storage
* http://predef.sourceforge.net/precomp.html
*/
#ifdef GIT_THREADS
# define GIT_HAS_TLS 1
/* No TLS in Cygwin */
# if defined(__CHECKER__) || defined(__CYGWIN__)
# undef GIT_HAS_TLS
# define GIT_TLS
/* No TLS in Mach binaries for Mac OS X */
# elif defined(__APPLE__) && defined(__MACH__)
# undef GIT_TLS
# define GIT_TLS
/* Normal TLS for GCC */
# elif defined(__GNUC__) || \
defined(__SUNPRO_C) || \
defined(__SUNPRO_CC) || \
defined(__xlc__) || \
defined(__xlC__)
# define GIT_TLS __thread
/* ICC may run on Windows or Linux */
# elif defined(__INTEL_COMPILER)
# if defined(_WIN32) || defined(_WIN32_CE)
# define GIT_TLS __declspec(thread)
# else
# define GIT_TLS __thread
# endif
/* Declspec for MSVC in Win32 */
# elif defined(_WIN32) || \
defined(_WIN32_CE) || \
defined(__BORLANDC__)
# define GIT_TLS __declspec(thread)
/* Other platform; no TLS */
# else
# undef GIT_HAS_TLS
# define GIT_TLS /* nothing: tls vars are thread-global */
# endif
#else /* Disable TLS if libgit2 is not threadsafe */
# define GIT_TLS
#endif /* GIT_THREADS */
#endif /* INCLUDE_git_thread_utils_h__ */
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