// Copyright 2010 Google Inc. // All rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above copyright // notice, this list of conditions and the following disclaimer in the // documentation and/or other materials provided with the distribution. // * Neither the name of Google Inc. nor the names of its contributors // may be used to endorse or promote products derived from this software // without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. /// \file utils/defs.hpp /// /// Definitions for compiler and system features autodetected at configuration /// time. #if !defined(UTILS_DEFS_HPP) #define UTILS_DEFS_HPP /// Attribute to mark a function as non-returning. #define UTILS_NORETURN @ATTRIBUTE_NORETURN@ /// Attribute to mark a function as pure. #define UTILS_PURE @ATTRIBUTE_PURE@ /// Attribute to mark an entity as unused. #define UTILS_UNUSED @ATTRIBUTE_UNUSED@ /// Macro to mark a parameter as unused. /// /// This macro has to be called on the name of a parameter during the /// definition (not declaration) of a function. When doing so, it declares /// the parameter as unused to silence compiler warnings and also renames /// the parameter by prefixing "unused_" to it. This is to ensure that the /// developer remembers to remove the call to this macro from the parameter /// when he actually starts using it. /// /// \param name The name of the function parameter to mark as unused. #define UTILS_UNUSED_PARAM(name) unused_ ## name UTILS_UNUSED #endif // !defined(UTILS_DEFS_HPP)