| OLD | NEW |
| 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 } |
| OLD | NEW |