security/sandbox/chromium/base/synchronization/lock.cc@ac0c01689b40 (annotated)
security/sandbox/chromium/base/synchronization/lock.cc
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | // Copyright (c) 2011 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 | // This file is used for debugging assertion support. The Lock class |
| michael@0 | 6 | // is functionally a wrapper around the LockImpl class, so the only |
| michael@0 | 7 | // real intelligence in the class is in the debugging logic. |
| michael@0 | 8 | |
| michael@0 | 9 | #if !defined(NDEBUG) |
| michael@0 | 10 | |
| michael@0 | 11 | #include "base/synchronization/lock.h" |
| michael@0 | 12 | #include "base/logging.h" |
| michael@0 | 13 | |
| michael@0 | 14 | namespace base { |
| michael@0 | 15 | |
| michael@0 | 16 | const PlatformThreadId kNoThreadId = static_cast<PlatformThreadId>(0); |
| michael@0 | 17 | |
| michael@0 | 18 | Lock::Lock() : lock_() { |
| michael@0 | 19 | owned_by_thread_ = false; |
| michael@0 | 20 | owning_thread_id_ = kNoThreadId; |
| michael@0 | 21 | } |
| michael@0 | 22 | |
| michael@0 | 23 | Lock::~Lock() { |
| michael@0 | 24 | DCHECK(!owned_by_thread_); |
| michael@0 | 25 | DCHECK_EQ(kNoThreadId, owning_thread_id_); |
| michael@0 | 26 | } |
| michael@0 | 27 | |
| michael@0 | 28 | void Lock::AssertAcquired() const { |
| michael@0 | 29 | DCHECK(owned_by_thread_); |
| michael@0 | 30 | DCHECK_EQ(owning_thread_id_, PlatformThread::CurrentId()); |
| michael@0 | 31 | } |
| michael@0 | 32 | |
| michael@0 | 33 | void Lock::CheckHeldAndUnmark() { |
| michael@0 | 34 | DCHECK(owned_by_thread_); |
| michael@0 | 35 | DCHECK_EQ(owning_thread_id_, PlatformThread::CurrentId()); |
| michael@0 | 36 | owned_by_thread_ = false; |
| michael@0 | 37 | owning_thread_id_ = kNoThreadId; |
| michael@0 | 38 | } |
| michael@0 | 39 | |
| michael@0 | 40 | void Lock::CheckUnheldAndMark() { |
| michael@0 | 41 | DCHECK(!owned_by_thread_); |
| michael@0 | 42 | owned_by_thread_ = true; |
| michael@0 | 43 | owning_thread_id_ = PlatformThread::CurrentId(); |
| michael@0 | 44 | } |
| michael@0 | 45 | |
| michael@0 | 46 | } // namespace base |
| michael@0 | 47 | |
| michael@0 | 48 | #endif // NDEBUG |
