The Tor Browser / file comparison
comparison: ipc/chromium/src/base/revocable_store.cc
ipc/chromium/src/base/revocable_store.cc
- branch
- TOR_BUG_3246
- changeset 6
- 8bccb770b82d
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| -1:000000000000 | 0:fd5c63f69481 |
|---|---|
| 1 // Copyright (c) 2006-2008 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 #include "base/revocable_store.h" | |
| 6 | |
| 7 #include "base/logging.h" | |
| 8 | |
| 9 RevocableStore::Revocable::Revocable(RevocableStore* store) | |
| 10 : store_reference_(store->owning_reference_) { | |
| 11 // We AddRef() the owning reference. | |
| 12 DCHECK(store_reference_->store()); | |
| 13 store_reference_->store()->Add(this); | |
| 14 } | |
| 15 | |
| 16 RevocableStore::Revocable::~Revocable() { | |
| 17 if (!revoked()) { | |
| 18 // Notify the store of our destruction. | |
| 19 --(store_reference_->store()->count_); | |
| 20 } | |
| 21 } | |
| 22 | |
| 23 RevocableStore::RevocableStore() : count_(0) { | |
| 24 // Create a new owning reference. | |
| 25 owning_reference_ = new StoreRef(this); | |
| 26 } | |
| 27 | |
| 28 RevocableStore::~RevocableStore() { | |
| 29 // Revoke all the items in the store. | |
| 30 owning_reference_->set_store(NULL); | |
| 31 } | |
| 32 | |
| 33 void RevocableStore::Add(Revocable* item) { | |
| 34 DCHECK(!item->revoked()); | |
| 35 ++count_; | |
| 36 } | |
| 37 | |
| 38 void RevocableStore::RevokeAll() { | |
| 39 // We revoke all the existing items in the store and reset our count. | |
| 40 owning_reference_->set_store(NULL); | |
| 41 count_ = 0; | |
| 42 | |
| 43 // Then we create a new owning reference for new items that get added. | |
| 44 // This Release()s the old owning reference, allowing it to be freed after | |
| 45 // all the items that were in the store are eventually destroyed. | |
| 46 owning_reference_ = new StoreRef(this); | |
| 47 } |
