base/allocator/type_profiler.cc

   1 // Copyright 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #if defined(TYPE_PROFILING)
   6
   7 #include "base/allocator/type_profiler.h"
   8
   9 #include <assert.h>
  10
  11 namespace {
  12
  13 void* NopIntercept(void* ptr, size_t size, const std::type_info& type) {
  14   return ptr;
  15 }
  16
  17 base::type_profiler::InterceptFunction* g_new_intercept = NopIntercept;
  18 base::type_profiler::InterceptFunction* g_delete_intercept = NopIntercept;
  19
  20 }
  21
  22 void* __op_new_intercept__(void* ptr,
  23                            size_t size,
  24                            const std::type_info& type) {
  25   return g_new_intercept(ptr, size, type);
  26 }
  27
  28 void* __op_delete_intercept__(void* ptr,
  29                               size_t size,
  30                               const std::type_info& type) {
  31   return g_delete_intercept(ptr, size, type);
  32 }
  33
  34 namespace base {
  35 namespace type_profiler {
  36
  37 // static
  38 void InterceptFunctions::SetFunctions(InterceptFunction* new_intercept,
  39                                       InterceptFunction* delete_intercept) {
  40   // Don't use DCHECK, as this file is injected into targets
  41   // that do not and should not depend on base/base.gyp:base
  42   assert(g_new_intercept == NopIntercept);
  43   assert(g_delete_intercept == NopIntercept);
  44
  45   g_new_intercept = new_intercept;
  46   g_delete_intercept = delete_intercept;
  47 }
  48
  49 // static
  50 void InterceptFunctions::ResetFunctions() {
  51   g_new_intercept = NopIntercept;
  52   g_delete_intercept = NopIntercept;
  53 }
  54
  55 // static
  56 bool InterceptFunctions::IsAvailable() {
  57   return g_new_intercept != NopIntercept || g_delete_intercept != NopIntercept;
  58 }
  59
  60 }  // namespace type_profiler
  61 }  // namespace base
  62
  63 #endif  // defined(TYPE_PROFILING)