security/sandbox/chromium/base/synchronization/lock_impl_win.cc@ac0c01689b40
security/sandbox/chromium/base/synchronization/lock_impl_win.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.
1 // Copyright (c) 2011 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.
5 #include "base/synchronization/lock_impl.h"
7 namespace base {
8 namespace internal {
10 LockImpl::LockImpl() {
11 // The second parameter is the spin count, for short-held locks it avoid the
12 // contending thread from going to sleep which helps performance greatly.
13 ::InitializeCriticalSectionAndSpinCount(&native_handle_, 2000);
14 }
16 LockImpl::~LockImpl() {
17 ::DeleteCriticalSection(&native_handle_);
18 }
20 bool LockImpl::Try() {
21 if (::TryEnterCriticalSection(&native_handle_) != FALSE) {
22 return true;
23 }
24 return false;
25 }
27 void LockImpl::Lock() {
28 ::EnterCriticalSection(&native_handle_);
29 }
31 void LockImpl::Unlock() {
32 ::LeaveCriticalSection(&native_handle_);
33 }
35 } // namespace internal
36 } // namespace base
