security/sandbox/win/src/win2k_threadpool.cc@6474c204b198 (annotated)
security/sandbox/win/src/win2k_threadpool.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) 2012 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 "sandbox/win/src/win2k_threadpool.h" |
| michael@0 | 6 | |
| michael@0 | 7 | #include "sandbox/win/src/win_utils.h" |
| michael@0 | 8 | |
| michael@0 | 9 | namespace sandbox { |
| michael@0 | 10 | |
| michael@0 | 11 | bool Win2kThreadPool::RegisterWait(const void* cookie, HANDLE waitable_object, |
| michael@0 | 12 | CrossCallIPCCallback callback, |
| michael@0 | 13 | void* context) { |
| michael@0 | 14 | if (0 == cookie) { |
| michael@0 | 15 | return false; |
| michael@0 | 16 | } |
| michael@0 | 17 | HANDLE pool_object = NULL; |
| michael@0 | 18 | // create a wait for a kernel object, with no timeout |
| michael@0 | 19 | if (!::RegisterWaitForSingleObject(&pool_object, waitable_object, callback, |
| michael@0 | 20 | context, INFINITE, WT_EXECUTEDEFAULT)) { |
| michael@0 | 21 | return false; |
| michael@0 | 22 | } |
| michael@0 | 23 | PoolObject pool_obj = {cookie, pool_object}; |
| michael@0 | 24 | AutoLock lock(&lock_); |
| michael@0 | 25 | pool_objects_.push_back(pool_obj); |
| michael@0 | 26 | return true; |
| michael@0 | 27 | } |
| michael@0 | 28 | |
| michael@0 | 29 | bool Win2kThreadPool::UnRegisterWaits(void* cookie) { |
| michael@0 | 30 | if (0 == cookie) { |
| michael@0 | 31 | return false; |
| michael@0 | 32 | } |
| michael@0 | 33 | AutoLock lock(&lock_); |
| michael@0 | 34 | bool success = true; |
| michael@0 | 35 | PoolObjects::iterator it = pool_objects_.begin(); |
| michael@0 | 36 | while (it != pool_objects_.end()) { |
| michael@0 | 37 | if (it->cookie == cookie) { |
| michael@0 | 38 | HANDLE wait = it->wait; |
| michael@0 | 39 | it = pool_objects_.erase(it); |
| michael@0 | 40 | success &= (::UnregisterWaitEx(wait, INVALID_HANDLE_VALUE) != 0); |
| michael@0 | 41 | } else { |
| michael@0 | 42 | ++it; |
| michael@0 | 43 | } |
| michael@0 | 44 | } |
| michael@0 | 45 | return success; |
| michael@0 | 46 | } |
| michael@0 | 47 | |
| michael@0 | 48 | size_t Win2kThreadPool::OutstandingWaits() { |
| michael@0 | 49 | AutoLock lock(&lock_); |
| michael@0 | 50 | return pool_objects_.size(); |
| michael@0 | 51 | } |
| michael@0 | 52 | |
| michael@0 | 53 | Win2kThreadPool::~Win2kThreadPool() { |
| michael@0 | 54 | // Here we used to unregister all the pool wait handles. Now, following the |
| michael@0 | 55 | // rest of the code we avoid lengthy or blocking calls given that the process |
| michael@0 | 56 | // is being torn down. |
| michael@0 | 57 | ::DeleteCriticalSection(&lock_); |
| michael@0 | 58 | } |
| michael@0 | 59 | |
| michael@0 | 60 | } // namespace sandbox |
