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