third_party/WebKit/Source/platform/wtf/ContainerAnnotations.h

// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef WTF_ContainerAnnotations_h
#define WTF_ContainerAnnotations_h

#include "build/build_config.h"
#include "platform/wtf/AddressSanitizer.h"

// TODO(ochang): Remove the ARCH_CPU_X86_64 condition to enable this for X86
// once the crashes there have been fixed: http://crbug.com/461406
#if defined(ADDRESS_SANITIZER) && defined(OS_LINUX) && defined(ARCH_CPU_X86_64)
#define ANNOTATE_CONTIGUOUS_CONTAINER
#define ANNOTATE_NEW_BUFFER(buffer, capacity, newSize)                       \
  if (buffer) {                                                              \
    __sanitizer_annotate_contiguous_container(buffer, (buffer) + (capacity), \
                                              (buffer) + (capacity),         \
                                              (buffer) + (newSize));         \
  }
#define ANNOTATE_DELETE_BUFFER(buffer, capacity, oldSize)                    \
  if (buffer) {                                                              \
    __sanitizer_annotate_contiguous_container(buffer, (buffer) + (capacity), \
                                              (buffer) + (oldSize),          \
                                              (buffer) + (capacity));        \
  }
#define ANNOTATE_CHANGE_SIZE(buffer, capacity, oldSize, newSize)             \
  if (buffer) {                                                              \
    __sanitizer_annotate_contiguous_container(buffer, (buffer) + (capacity), \
                                              (buffer) + (oldSize),          \
                                              (buffer) + (newSize));         \
  }
#define ANNOTATE_CHANGE_CAPACITY(buffer, oldCapacity, bufferSize, newCapacity) \
  ANNOTATE_DELETE_BUFFER(buffer, oldCapacity, bufferSize);                     \
  ANNOTATE_NEW_BUFFER(buffer, newCapacity, bufferSize);
// Annotations require buffers to begin on an 8-byte boundary.

#else  // ADDRESS_SANITIZER && OS_LINUX && ARCH_CPU_X86_64

#define ANNOTATE_NEW_BUFFER(buffer, capacity, newSize)
#define ANNOTATE_DELETE_BUFFER(buffer, capacity, oldSize)
#define ANNOTATE_CHANGE_SIZE(buffer, capacity, oldSize, newSize)
#define ANNOTATE_CHANGE_CAPACITY(buffer, oldCapacity, bufferSize, newCapacity)

#endif  // ADDRESS_SANITIZER && OS_LINUX && ARCH_CPU_X86_64

#endif  // WTF_ContainerAnnotations_h