/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* vim: set ts=8 sts=2 et sw=2 tw=80: */ // Copyright (c) 2006-2008 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.
#include"base/revocable_store.h"
#include"base/logging.h"
RevocableStore::Revocable::Revocable(RevocableStore* store)
: store_reference_(store->owning_reference_) { // We AddRef() the owning reference.
DCHECK(store_reference_->store());
store_reference_->store()->Add(this);
}
RevocableStore::RevocableStore() { // Create a new owning reference.
owning_reference_ = new StoreRef(this);
}
RevocableStore::~RevocableStore() { // Revoke all the items in the store.
owning_reference_->set_store(NULL);
}
void RevocableStore::RevokeAll() { // We revoke all the existing items in the store and reset our count.
owning_reference_->set_store(NULL);
// Then we create a new owning reference for new items that get added. // This Release()s the old owning reference, allowing it to be freed after // all the items that were in the store are eventually destroyed.
owning_reference_ = new StoreRef(this);
}
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