third_party/tcmalloc/chromium/src/tcmalloc.h

   1 // Copyright (c) 2007, Google Inc.
   2 // All rights reserved.
   3 //
   4 // Redistribution and use in source and binary forms, with or without
   5 // modification, are permitted provided that the following conditions are
   6 // met:
   7 //
   8 //     * Redistributions of source code must retain the above copyright
   9 // notice, this list of conditions and the following disclaimer.
  10 //     * Redistributions in binary form must reproduce the above
  11 // copyright notice, this list of conditions and the following disclaimer
  12 // in the documentation and/or other materials provided with the
  13 // distribution.
  14 //     * Neither the name of Google Inc. nor the names of its
  15 // contributors may be used to endorse or promote products derived from
  16 // this software without specific prior written permission.
  17 //
  18 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29
  30 // ---
  31 // Author: Craig Silverstein <opensource@google.com>
  32 //
  33 // Some obscure memory-allocation routines may not be declared on all
  34 // systems.  In those cases, we'll just declare them ourselves.
  35 // This file is meant to be used only internally, for unittests.
  36
  37 #include <config.h>
  38
  39 #ifndef _XOPEN_SOURCE
  40 # define _XOPEN_SOURCE 600  // for posix_memalign
  41 #endif
  42 #include <stdlib.h>         // for posix_memalign
  43 // FreeBSD has malloc.h, but complains if you use it
  44 #if defined(HAVE_MALLOC_H) && !defined(__FreeBSD__)
  45 #include <malloc.h>         // for memalign, valloc, pvalloc
  46 #endif
  47
  48 // __THROW is defined in glibc systems.  It means, counter-intuitively,
  49 // "This function will never throw an exception."  It's an optional
  50 // optimization tool, but we may need to use it to match glibc prototypes.
  51 #ifndef __THROW    // I guess we're not on a glibc system
  52 # define __THROW   // __THROW is just an optimization, so ok to make it ""
  53 #endif
  54
  55 #if !HAVE_CFREE_SYMBOL
  56 extern "C" void cfree(void* ptr) __THROW;
  57 #endif
  58 #if !HAVE_POSIX_MEMALIGN_SYMBOL
  59 extern "C" int posix_memalign(void** ptr, size_t align, size_t size) __THROW;
  60 #endif
  61 #if !HAVE_MEMALIGN_SYMBOL
  62 extern "C" void* memalign(size_t __alignment, size_t __size) __THROW;
  63 #endif
  64 #if !HAVE_VALLOC_SYMBOL
  65 extern "C" void* valloc(size_t __size) __THROW;
  66 #endif
  67 #if !HAVE_PVALLOC_SYMBOL
  68 extern "C" void* pvalloc(size_t __size) __THROW;
  69 #endif