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comparison: security/sandbox/chromium/base/win/scoped_handle.cc
security/sandbox/chromium/base/win/scoped_handle.cc
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:aa4f449d37b6 |
|---|---|
| 1 // Copyright (c) 2012 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/win/scoped_handle.h" | |
| 6 | |
| 7 #include <map> | |
| 8 | |
| 9 #include "base/debug/alias.h" | |
| 10 #include "base/lazy_instance.h" | |
| 11 #include "base/synchronization/lock.h" | |
| 12 #include "base/win/windows_version.h" | |
| 13 | |
| 14 namespace { | |
| 15 | |
| 16 struct Info { | |
| 17 const void* owner; | |
| 18 const void* pc1; | |
| 19 const void* pc2; | |
| 20 DWORD thread_id; | |
| 21 }; | |
| 22 typedef std::map<HANDLE, Info> HandleMap; | |
| 23 | |
| 24 base::LazyInstance<HandleMap>::Leaky g_handle_map = LAZY_INSTANCE_INITIALIZER; | |
| 25 base::LazyInstance<base::Lock>::Leaky g_lock = LAZY_INSTANCE_INITIALIZER; | |
| 26 | |
| 27 } // namespace | |
| 28 | |
| 29 namespace base { | |
| 30 namespace win { | |
| 31 | |
| 32 // Static. | |
| 33 void VerifierTraits::StartTracking(HANDLE handle, const void* owner, | |
| 34 const void* pc1, const void* pc2) { | |
| 35 // Grab the thread id before the lock. | |
| 36 DWORD thread_id = GetCurrentThreadId(); | |
| 37 | |
| 38 AutoLock lock(g_lock.Get()); | |
| 39 | |
| 40 Info handle_info = { owner, pc1, pc2, thread_id }; | |
| 41 std::pair<HANDLE, Info> item(handle, handle_info); | |
| 42 std::pair<HandleMap::iterator, bool> result = g_handle_map.Get().insert(item); | |
| 43 if (!result.second) { | |
| 44 Info other = result.first->second; | |
| 45 debug::Alias(&other); | |
| 46 CHECK(false); | |
| 47 } | |
| 48 } | |
| 49 | |
| 50 // Static. | |
| 51 void VerifierTraits::StopTracking(HANDLE handle, const void* owner, | |
| 52 const void* pc1, const void* pc2) { | |
| 53 AutoLock lock(g_lock.Get()); | |
| 54 HandleMap::iterator i = g_handle_map.Get().find(handle); | |
| 55 if (i == g_handle_map.Get().end()) | |
| 56 CHECK(false); | |
| 57 | |
| 58 Info other = i->second; | |
| 59 if (other.owner != owner) { | |
| 60 debug::Alias(&other); | |
| 61 CHECK(false); | |
| 62 } | |
| 63 | |
| 64 g_handle_map.Get().erase(i); | |
| 65 } | |
| 66 | |
| 67 } // namespace win | |
| 68 } // namespace base |
