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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. | 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 | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "chrome/common/multi_process_lock.h" | 5 #include "chrome/common/multi_process_lock.h" |
6 | 6 |
7 #include "base/logging.h" | 7 #include "base/logging.h" |
8 #include "base/strings/utf_string_conversions.h" | 8 #include "base/strings/utf_string_conversions.h" |
9 #include "base/win/scoped_handle.h" | 9 #include "base/win/scoped_handle.h" |
10 | 10 |
11 class MultiProcessLockWin : public MultiProcessLock { | 11 class MultiProcessLockWin : public MultiProcessLock { |
12 public: | 12 public: |
13 explicit MultiProcessLockWin(const std::string& name) : name_(name) { } | 13 explicit MultiProcessLockWin(const std::string& name) : name_(name) { } |
14 | 14 |
15 virtual ~MultiProcessLockWin() { | 15 ~MultiProcessLockWin() override { |
16 if (event_.Get() != NULL) { | 16 if (event_.Get() != NULL) { |
17 Unlock(); | 17 Unlock(); |
18 } | 18 } |
19 } | 19 } |
20 | 20 |
21 virtual bool TryLock() { | 21 bool TryLock() override { |
22 if (event_.Get() != NULL) { | 22 if (event_.Get() != NULL) { |
23 DLOG(ERROR) << "MultiProcessLock is already locked - " << name_; | 23 DLOG(ERROR) << "MultiProcessLock is already locked - " << name_; |
24 return true; | 24 return true; |
25 } | 25 } |
26 | 26 |
27 if (name_.length() >= MAX_PATH) { | 27 if (name_.length() >= MAX_PATH) { |
28 LOG(ERROR) << "Socket name too long (" << name_.length() | 28 LOG(ERROR) << "Socket name too long (" << name_.length() |
29 << " >= " << MAX_PATH << ") - " << name_; | 29 << " >= " << MAX_PATH << ") - " << name_; |
30 return false; | 30 return false; |
31 } | 31 } |
32 | 32 |
33 base::string16 wname = base::UTF8ToUTF16(name_); | 33 base::string16 wname = base::UTF8ToUTF16(name_); |
34 event_.Set(CreateEvent(NULL, FALSE, FALSE, wname.c_str())); | 34 event_.Set(CreateEvent(NULL, FALSE, FALSE, wname.c_str())); |
35 if (event_.Get() && GetLastError() != ERROR_ALREADY_EXISTS) { | 35 if (event_.Get() && GetLastError() != ERROR_ALREADY_EXISTS) { |
36 return true; | 36 return true; |
37 } else { | 37 } else { |
38 event_.Set(NULL); | 38 event_.Set(NULL); |
39 return false; | 39 return false; |
40 } | 40 } |
41 } | 41 } |
42 | 42 |
43 virtual void Unlock() { | 43 void Unlock() override { |
44 if (event_.Get() == NULL) { | 44 if (event_.Get() == NULL) { |
45 DLOG(ERROR) << "Over-unlocked MultiProcessLock - " << name_; | 45 DLOG(ERROR) << "Over-unlocked MultiProcessLock - " << name_; |
46 return; | 46 return; |
47 } | 47 } |
48 event_.Set(NULL); | 48 event_.Set(NULL); |
49 } | 49 } |
50 | 50 |
51 private: | 51 private: |
52 std::string name_; | 52 std::string name_; |
53 base::win::ScopedHandle event_; | 53 base::win::ScopedHandle event_; |
54 DISALLOW_COPY_AND_ASSIGN(MultiProcessLockWin); | 54 DISALLOW_COPY_AND_ASSIGN(MultiProcessLockWin); |
55 }; | 55 }; |
56 | 56 |
57 MultiProcessLock* MultiProcessLock::Create(const std::string &name) { | 57 MultiProcessLock* MultiProcessLock::Create(const std::string &name) { |
58 return new MultiProcessLockWin(name); | 58 return new MultiProcessLockWin(name); |
59 } | 59 } |
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