Revert 126020 - Experiment for updating the tcmalloc chromium branch to r144 (gperftools 2.0).

third_party/tcmalloc/chromium/src/libc_override.h

-// Copyright (c) 2011, 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.
-
-// ---
-// Author: Craig Silverstein <opensource@google.com>
-//
-// This .h file imports the code that causes tcmalloc to override libc
-// versions of malloc/free/new/delete/etc.  That is, it provides the
-// logic that makes it so calls to malloc(10) go through tcmalloc,
-// rather than the default (libc) malloc.
-//
-// This file also provides a method: ReplaceSystemAlloc(), that every
-// libc_override_*.h file it #includes is required to provide.  This
-// is called when first setting up tcmalloc -- that is, when a global
-// constructor in tcmalloc.cc is executed -- to do any initialization
-// work that may be required for this OS.  (Note we cannot entirely
-// control when tcmalloc is initialized, and the system may do some
-// mallocs and frees before this routine is called.)  It may be a
-// noop.
-//
-// Every libc has its own way of doing this, and sometimes the compiler
-// matters too, so we have a different file for each libc, and often
-// for different compilers and OS's.
-
-#ifndef TCMALLOC_LIBC_OVERRIDE_INL_H_
-#define TCMALLOC_LIBC_OVERRIDE_INL_H_
-
-#include <config.h>
-#ifdef HAVE_FEATURES_H
-#include <features.h>   // for __GLIBC__
-#endif
-#include <gperftools/tcmalloc.h>
-
-static void ReplaceSystemAlloc();  // defined in the .h files below
-
-// For windows, there are two ways to get tcmalloc.  If we're
-// patching, then src/windows/patch_function.cc will do the necessary
-// overriding here.  Otherwise, we doing the 'redefine' trick, where
-// we remove malloc/new/etc from mscvcrt.dll, and just need to define
-// them now.
-#if defined(_WIN32) && defined(WIN32_DO_PATCHING)
-void PatchWindowsFunctions();   // in src/windows/patch_function.cc
-static void ReplaceSystemAlloc() { PatchWindowsFunctions(); }
-
-#elif defined(_WIN32) && !defined(WIN32_DO_PATCHING)
-// "libc_override_redefine.h" is included in the original gperftools.  But,
-// we define allocator functions in Chromium's base/allocator/allocator_shim.cc
-// on Windows.  We don't include libc_override_redefine.h here.
-// ReplaceSystemAlloc() is defined here instead.
-static void ReplaceSystemAlloc() { }
-
-#elif defined(__APPLE__)
-#include "libc_override_osx.h"
-
-#elif defined(__GLIBC__)
-#include "libc_override_glibc.h"
-
-// Not all gcc systems necessarily support weak symbols, but all the
-// ones I know of do, so for now just assume they all do.
-#elif defined(__GNUC__)
-#include "libc_override_gcc_and_weak.h"
-
-#else
-#error Need to add support for your libc/OS here
-
-#endif
-
-#endif  // TCMALLOC_LIBC_OVERRIDE_INL_H_