OLD | NEW |
| (Empty) |
1 // Copyright 2009-2010 Google Inc. | |
2 // | |
3 // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 // you may not use this file except in compliance with the License. | |
5 // You may obtain a copy of the License at | |
6 // | |
7 // http://www.apache.org/licenses/LICENSE-2.0 | |
8 // | |
9 // Unless required by applicable law or agreed to in writing, software | |
10 // distributed under the License is distributed on an "AS IS" BASIS, | |
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 // See the License for the specific language governing permissions and | |
13 // limitations under the License. | |
14 // ======================================================================== | |
15 // | |
16 // Contains GoogleUpdate class which is the ATL exe module for the local | |
17 // server that allows launching of the browser at medium integrity. | |
18 | |
19 #ifndef OMAHA_GOOPDATE_GOOGLE_UPDATE_H_ | |
20 #define OMAHA_GOOPDATE_GOOGLE_UPDATE_H_ | |
21 | |
22 #include <windows.h> | |
23 #include <atlbase.h> | |
24 #include "base/scoped_ptr.h" | |
25 #include "goopdate/omaha3_idl.h" | |
26 #include "omaha/base/debug.h" | |
27 | |
28 namespace omaha { | |
29 | |
30 // TODO(omaha): Perhaps a better approach might be to use Adapter classes to | |
31 // modify behavior instead of the mode being explicitly specified here. Consider | |
32 // when making future changes. | |
33 // It might also be a good idea to rename this class and file since it is more | |
34 // a boilerplate for COM servers than it is related to "Google Update" or the | |
35 // main Omaha 3 COM server since it als handles various brokers. | |
36 class GoogleUpdate : public CAtlExeModuleT<GoogleUpdate> { | |
37 public: | |
38 enum ComServerMode { | |
39 kUpdate3Mode, | |
40 kBrokerMode, | |
41 kOnDemandMode, | |
42 }; | |
43 | |
44 DECLARE_LIBID(LIBID_GoogleUpdate3Lib) | |
45 | |
46 explicit GoogleUpdate(bool is_machine, ComServerMode mode); | |
47 ~GoogleUpdate(); | |
48 HRESULT RegisterClassObjects(DWORD cls_ctx, DWORD flags) throw(); | |
49 HRESULT RevokeClassObjects() throw(); | |
50 | |
51 // The base ATL classes have an implicit dependency on the second parameter | |
52 // to RegisterServer and UnregisterServer having a default value. | |
53 HRESULT RegisterServer(BOOL register_tlb, const CLSID* id = NULL) throw(); | |
54 HRESULT UnregisterServer(BOOL unregister_tlb, const CLSID* id = NULL) throw(); | |
55 HRESULT PreMessageLoop(int show_cmd) throw(); | |
56 HRESULT PostMessageLoop() throw(); | |
57 HRESULT Main(); | |
58 | |
59 // This is cloned from CAtlExeModuleT.Lock(). The one difference is the call | |
60 // to ::CoAddRefServerProcess(). See the description for Unlock() below for | |
61 // further information. | |
62 virtual LONG Lock() throw() { | |
63 ::CoAddRefServerProcess(); | |
64 return CComGlobalsThreadModel::Increment(&m_nLockCnt); | |
65 } | |
66 | |
67 // This is cloned from CAtlExeModuleT.Unlock(). The big difference is the call | |
68 // to ::CoReleaseServerProcess(), to ensure that the class factories are | |
69 // suspended once the lock count drops to zero. This fixes a a race condition | |
70 // where an activation request could come in in the middle of shutting down. | |
71 // This shutdown mechanism works with free threaded servers. | |
72 // | |
73 // There are race issues with the ATL delayed shutdown mechanism, hence the | |
74 // associated code has been eliminated, and we have an assert to make sure | |
75 // m_bDelayShutdown is not set. | |
76 virtual LONG Unlock() throw() { | |
77 ASSERT1(!m_bDelayShutdown); | |
78 | |
79 ::CoReleaseServerProcess(); | |
80 LONG lRet = CComGlobalsThreadModel::Decrement(&m_nLockCnt); | |
81 | |
82 if (lRet == 0) { | |
83 ::PostThreadMessage(m_dwMainThreadID, WM_QUIT, 0, 0); | |
84 } | |
85 | |
86 return lRet; | |
87 } | |
88 | |
89 private: | |
90 _ATL_OBJMAP_ENTRY* GetObjectMap(); | |
91 HRESULT RegisterOrUnregisterExe(bool is_register); | |
92 static HRESULT RegisterOrUnregisterExe(void* data, bool is_register); | |
93 | |
94 ComServerMode mode_; | |
95 bool is_machine_; | |
96 | |
97 DISALLOW_EVIL_CONSTRUCTORS(GoogleUpdate); | |
98 }; | |
99 | |
100 } // namespace omaha | |
101 | |
102 #endif // OMAHA_GOOPDATE_GOOGLE_UPDATE_H_ | |
103 | |
OLD | NEW |