// Copyright 2013 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 TOOLS_ANDROID_FORWARDER2_UTIL_H_
#define TOOLS_ANDROID_FORWARDER2_UTIL_H_
#include "base/logging.h"
namespace forwarder2 {
// Safely deletes a ref-counted value in a provided map by unlinking the object
// from the map before deleting it in case its destructor would access the map.
// Deletion will only happen by definition if the object's refcount is set to 1
// before this function gets called. Returns whether the element could be found
// in the map.
template <typename Map, typename K>
bool DeleteRefCountedValueInMap(const K& key, Map* map) {
const typename Map::iterator it = map->find(key);
if (it == map->end())
return false;
DeleteRefCountedValueInMapFromIterator(it, map);
return true;
}
// See DeleteRefCountedValuetInMap() above.
template <typename Map, typename Iterator>
void DeleteRefCountedValueInMapFromIterator(Iterator it, Map* map) {
DCHECK(it != map->end());
const typename Map::value_type::second_type shared_ptr_copy = it->second;
map->erase(it);
}
} // namespace forwarder2
#endif // TOOLS_ANDROID_FORWARDER2_UTIL_H_