//////////////////////////////////////////////////////////////////////////////// // The Loki Library // Copyright (c) 2009 by Rich Sposato // Permission to use, copy, modify, distribute and sell this software for any // purpose is hereby granted without fee, provided that the above copyright // notice appear in all copies and that both that copyright notice and this // permission notice appear in supporting documentation. // The author makes no representations about the // suitability of this software for any purpose. It is provided "as is" // without express or implied warranty. //////////////////////////////////////////////////////////////////////////////// #ifndef LOKI_THREAD_LOCAL_H_INCLUDED #define LOKI_THREAD_LOCAL_H_INCLUDED // $Id$ // ---------------------------------------------------------------------------- // First assume the compiler does allow thread-local storage by #defining the // macro which allows compiler to see the code inside this file. // Then #undefine the macro for compilers which are known for not supporting // thread-local storage. #define LOKI_THINKS_COMPILER_ALLOWS_THREAD_LOCAL_STORAGE 1 // The __APPLE__ macro does not refer to a compiler, but to the Apple OSX operating system. #if defined( __APPLE__ ) #warning "GCC for Apple does not allow thread_local storage, so you can not use some parts of Loki." #undef COMPILER_ALLOWS_THREAD_LOCAL_STORAGE #endif #if ( defined( __CYGWIN__ ) && ( __GNUC__ <= 3 ) ) #warning "Older versions of GCC for Cygwin do not allow thread_local storage, so you can not use some parts of Loki." #undef COMPILER_ALLOWS_THREAD_LOCAL_STORAGE #endif #if defined( LOKI_THINKS_COMPILER_ALLOWS_THREAD_LOCAL_STORAGE ) && !defined( LOKI_THREAD_LOCAL ) /** @par thread_local Keyword Some parts of Loki require compilers to provide thread local storage - meaning each thread gets its own copy of the data. The next version of C++ will have a new keyword, thread_local for that purpose. Some existing compilers already provide thread local storage using different syntax, so these lines use thread_local to mimic that syntax. If your compiler provides thread local storage but using different syntax besides "thread_local", you may want to modify these lines. If your compiler does not support thread local storage, you can't use some parts of Loki. */ #if defined( _MSC_VER ) #if ( _MSC_VER >= 1300 ) #define LOKI_THREAD_LOCAL __declspec( thread ) #else #error "Only Visual Studio versions 7.0 and after supported." #endif #elif ( __GNUC__ ) #define LOKI_THREAD_LOCAL __thread #else #warning "Check if your compiler provides thread local storage." #define LOKI_THREAD_LOCAL thread_local #endif #endif // if compiler allows thread_local storage and LOKI_THREAD_LOCAL macro not defined yet // ---------------------------------------------------------------------------- #endif // end file guardian