Index: third_party/tcmalloc/chromium/src/libc_override.h |
diff --git a/third_party/tcmalloc/chromium/src/libc_override.h b/third_party/tcmalloc/chromium/src/libc_override.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..089084a2e4988d34fd0723f4d651f194e264a2c4 |
--- /dev/null |
+++ b/third_party/tcmalloc/chromium/src/libc_override.h |
@@ -0,0 +1,94 @@ |
+// 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_ |