1    :  // Copyright 2014 Google Inc. All Rights Reserved.
   2    :  //
   3    :  // Licensed under the Apache License, Version 2.0 (the "License");
   4    :  // you may not use this file except in compliance with the License.
   5    :  // You may obtain a copy of the License at
   6    :  //
   7    :  //     http://www.apache.org/licenses/LICENSE-2.0
   8    :  //
   9    :  // Unless required by applicable law or agreed to in writing, software
  10    :  // distributed under the License is distributed on an "AS IS" BASIS,
  11    :  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12    :  // See the License for the specific language governing permissions and
  13    :  // limitations under the License.
  14    :  
  15    :  #include "syzygy/agent/asan/memory_notifiers/shadow_memory_notifier.h"
  16    :  
  17    :  #include "syzygy/agent/asan/shadow.h"
  18    :  
  19    :  namespace agent {
  20    :  namespace asan {
  21    :  namespace memory_notifiers {
  22    :  
  23    :  void ShadowMemoryNotifier::NotifyInternalUse(
  24  E :      const void* address, size_t size) {
  25  E :    DCHECK_NE(static_cast<void*>(NULL), address);
  26  E :    Shadow::Poison(address, size, kAsanMemoryMarker);
  27  E :  }
  28    :  
  29    :  void ShadowMemoryNotifier::NotifyFutureHeapUse(
  30  E :      const void* address, size_t size) {
  31  E :    DCHECK_NE(static_cast<void*>(NULL), address);
  32  E :    Shadow::Poison(address, size, kAsanReservedMarker);
  33  E :  }
  34    :  
  35    :  void ShadowMemoryNotifier::NotifyReturnedToOS(
  36  E :      const void* address, size_t size) {
  37  E :    DCHECK_NE(static_cast<void*>(NULL), address);
  38  E :    Shadow::Unpoison(address, size);
  39  E :  }
  40    :  
  41    :  }  // namespace memory_notifiers
  42    :  }  // namespace asan
  43    :  }  // namespace agent