gperftools/src/tcmalloc.h

// -*- Mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*-
// Copyright (c) 2007, Google Inc.
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//
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// ---
// Author: Craig Silverstein <opensource@google.com>
//
// Some obscure memory-allocation routines may not be declared on all
// systems.  In those cases, we'll just declare them ourselves.
// This file is meant to be used only internally, for unittests.

#include <config.h>

#ifndef _XOPEN_SOURCE
# define _XOPEN_SOURCE 600  // for posix_memalign
#endif
#include <stdlib.h>         // for posix_memalign
// FreeBSD has malloc.h, but complains if you use it
#if defined(HAVE_MALLOC_H) && !defined(__FreeBSD__)
#include <malloc.h>         // for memalign, valloc, pvalloc
#endif

// __THROW is defined in glibc systems.  It means, counter-intuitively,
// "This function will never throw an exception."  It's an optional
// optimization tool, but we may need to use it to match glibc prototypes.
#ifndef __THROW    // I guess we're not on a glibc system
# define __THROW   // __THROW is just an optimization, so ok to make it ""
#endif

#if !HAVE_CFREE_SYMBOL
extern "C" void cfree(void* ptr) __THROW;
#endif
#if !HAVE_POSIX_MEMALIGN_SYMBOL
extern "C" int posix_memalign(void** ptr, size_t align, size_t size) __THROW;
#endif
#if !HAVE_MEMALIGN_SYMBOL
extern "C" void* memalign(size_t __alignment, size_t __size) __THROW;
#endif
#if !HAVE_VALLOC_SYMBOL
extern "C" void* valloc(size_t __size) __THROW;
#endif
#if !HAVE_PVALLOC_SYMBOL
extern "C" void* pvalloc(size_t __size) __THROW;
#endif