ipc/chromium/src/base/revocable_store.cc@6474c204b198 (annotated)
ipc/chromium/src/base/revocable_store.cc
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. |
| michael@0 | 2 | // Use of this source code is governed by a BSD-style license that can be |
| michael@0 | 3 | // found in the LICENSE file. |
| michael@0 | 4 | |
| michael@0 | 5 | #include "base/revocable_store.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #include "base/logging.h" |
| michael@0 | 8 | |
| michael@0 | 9 | RevocableStore::Revocable::Revocable(RevocableStore* store) |
| michael@0 | 10 | : store_reference_(store->owning_reference_) { |
| michael@0 | 11 | // We AddRef() the owning reference. |
| michael@0 | 12 | DCHECK(store_reference_->store()); |
| michael@0 | 13 | store_reference_->store()->Add(this); |
| michael@0 | 14 | } |
| michael@0 | 15 | |
| michael@0 | 16 | RevocableStore::Revocable::~Revocable() { |
| michael@0 | 17 | if (!revoked()) { |
| michael@0 | 18 | // Notify the store of our destruction. |
| michael@0 | 19 | --(store_reference_->store()->count_); |
| michael@0 | 20 | } |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | RevocableStore::RevocableStore() : count_(0) { |
| michael@0 | 24 | // Create a new owning reference. |
| michael@0 | 25 | owning_reference_ = new StoreRef(this); |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | RevocableStore::~RevocableStore() { |
| michael@0 | 29 | // Revoke all the items in the store. |
| michael@0 | 30 | owning_reference_->set_store(NULL); |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | void RevocableStore::Add(Revocable* item) { |
| michael@0 | 34 | DCHECK(!item->revoked()); |
| michael@0 | 35 | ++count_; |
| michael@0 | 36 | } |
| michael@0 | 37 | |
| michael@0 | 38 | void RevocableStore::RevokeAll() { |
| michael@0 | 39 | // We revoke all the existing items in the store and reset our count. |
| michael@0 | 40 | owning_reference_->set_store(NULL); |
| michael@0 | 41 | count_ = 0; |
| michael@0 | 42 | |
| michael@0 | 43 | // Then we create a new owning reference for new items that get added. |
| michael@0 | 44 | // This Release()s the old owning reference, allowing it to be freed after |
| michael@0 | 45 | // all the items that were in the store are eventually destroyed. |
| michael@0 | 46 | owning_reference_ = new StoreRef(this); |
| michael@0 | 47 | } |
