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Issue 683113005: Update from chromium https://crrev.com/302282 (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 6 years, 1 month ago
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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 "base/files/file_path_watcher.h" 5 #include "base/files/file_path_watcher.h"
6 6
7 #include "base/bind.h" 7 #include "base/bind.h"
8 #include "base/files/file.h" 8 #include "base/files/file.h"
9 #include "base/files/file_path.h" 9 #include "base/files/file_path.h"
10 #include "base/files/file_util.h" 10 #include "base/files/file_util.h"
11 #include "base/logging.h" 11 #include "base/logging.h"
12 #include "base/memory/ref_counted.h" 12 #include "base/memory/ref_counted.h"
13 #include "base/message_loop/message_loop_proxy.h" 13 #include "base/message_loop/message_loop_proxy.h"
14 #include "base/profiler/scoped_profile.h" 14 #include "base/profiler/scoped_tracker.h"
15 #include "base/time/time.h" 15 #include "base/time/time.h"
16 #include "base/win/object_watcher.h" 16 #include "base/win/object_watcher.h"
17 17
18 namespace base { 18 namespace base {
19 19
20 namespace { 20 namespace {
21 21
22 class FilePathWatcherImpl : public FilePathWatcher::PlatformDelegate, 22 class FilePathWatcherImpl : public FilePathWatcher::PlatformDelegate,
23 public base::win::ObjectWatcher::Delegate, 23 public base::win::ObjectWatcher::Delegate,
24 public MessageLoop::DestructionObserver { 24 public MessageLoop::DestructionObserver {
25 public: 25 public:
26 FilePathWatcherImpl() 26 FilePathWatcherImpl()
27 : handle_(INVALID_HANDLE_VALUE), 27 : handle_(INVALID_HANDLE_VALUE),
28 recursive_watch_(false) {} 28 recursive_watch_(false) {}
29 29
30 // FilePathWatcher::PlatformDelegate overrides. 30 // FilePathWatcher::PlatformDelegate overrides.
31 virtual bool Watch(const FilePath& path, 31 virtual bool Watch(const FilePath& path,
32 bool recursive, 32 bool recursive,
33 const FilePathWatcher::Callback& callback) override; 33 const FilePathWatcher::Callback& callback) override;
34 virtual void Cancel() override; 34 virtual void Cancel() override;
35 35
36 // Deletion of the FilePathWatcher will call Cancel() to dispose of this 36 // Deletion of the FilePathWatcher will call Cancel() to dispose of this
37 // object in the right thread. This also observes destruction of the required 37 // object in the right thread. This also observes destruction of the required
38 // cleanup thread, in case it quits before Cancel() is called. 38 // cleanup thread, in case it quits before Cancel() is called.
39 virtual void WillDestroyCurrentMessageLoop() override; 39 virtual void WillDestroyCurrentMessageLoop() override;
40 40
41 // Callback from MessageLoopForIO. 41 // Callback from MessageLoopForIO.
42 virtual void OnObjectSignaled(HANDLE object); 42 virtual void OnObjectSignaled(HANDLE object) override;
43 43
44 private: 44 private:
45 virtual ~FilePathWatcherImpl() {} 45 virtual ~FilePathWatcherImpl() {}
46 46
47 // Setup a watch handle for directory |dir|. Set |recursive| to true to watch 47 // Setup a watch handle for directory |dir|. Set |recursive| to true to watch
48 // the directory sub trees. Returns true if no fatal error occurs. |handle| 48 // the directory sub trees. Returns true if no fatal error occurs. |handle|
49 // will receive the handle value if |dir| is watchable, otherwise 49 // will receive the handle value if |dir| is watchable, otherwise
50 // INVALID_HANDLE_VALUE. 50 // INVALID_HANDLE_VALUE.
51 static bool SetupWatchHandle(const FilePath& dir, 51 static bool SetupWatchHandle(const FilePath& dir,
52 bool recursive, 52 bool recursive,
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140 MessageLoop::current()->RemoveDestructionObserver(this); 140 MessageLoop::current()->RemoveDestructionObserver(this);
141 callback_.Reset(); 141 callback_.Reset();
142 } 142 }
143 } 143 }
144 144
145 void FilePathWatcherImpl::WillDestroyCurrentMessageLoop() { 145 void FilePathWatcherImpl::WillDestroyCurrentMessageLoop() {
146 CancelOnMessageLoopThread(); 146 CancelOnMessageLoopThread();
147 } 147 }
148 148
149 void FilePathWatcherImpl::OnObjectSignaled(HANDLE object) { 149 void FilePathWatcherImpl::OnObjectSignaled(HANDLE object) {
150 // TODO(vadimt): Remove ScopedProfile below once crbug.com/418183 is fixed. 150 // TODO(vadimt): Remove ScopedTracker below once crbug.com/418183 is fixed.
151 tracked_objects::ScopedProfile tracking_profile( 151 tracked_objects::ScopedTracker tracking_profile(
152 FROM_HERE_WITH_EXPLICIT_FUNCTION( 152 FROM_HERE_WITH_EXPLICIT_FUNCTION("FilePathWatcherImpl_OnObjectSignaled"));
153 "FilePathWatcherImpl_OnObjectSignaled"));
154 153
155 DCHECK(object == handle_); 154 DCHECK(object == handle_);
156 // Make sure we stay alive through the body of this function. 155 // Make sure we stay alive through the body of this function.
157 scoped_refptr<FilePathWatcherImpl> keep_alive(this); 156 scoped_refptr<FilePathWatcherImpl> keep_alive(this);
158 157
159 if (!UpdateWatch()) { 158 if (!UpdateWatch()) {
160 callback_.Run(target_, true /* error */); 159 callback_.Run(target_, true /* error */);
161 return; 160 return;
162 } 161 }
163 162
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298 handle_ = INVALID_HANDLE_VALUE; 297 handle_ = INVALID_HANDLE_VALUE;
299 } 298 }
300 299
301 } // namespace 300 } // namespace
302 301
303 FilePathWatcher::FilePathWatcher() { 302 FilePathWatcher::FilePathWatcher() {
304 impl_ = new FilePathWatcherImpl(); 303 impl_ = new FilePathWatcherImpl();
305 } 304 }
306 305
307 } // namespace base 306 } // namespace base
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