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1 // Copyright (c) 2014 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 #ifndef COMPONENTS_BROWSER_WATCHER_WATCHER_CLIENT_WIN_H_ | |
6 #define COMPONENTS_BROWSER_WATCHER_WATCHER_CLIENT_WIN_H_ | |
7 | |
8 #include "base/command_line.h" | |
9 #include "base/files/file_path.h" | |
erikwright (departed)
2014/11/14 19:46:09
not used
Sigurður Ásgeirsson
2014/11/17 15:26:58
Done.
| |
10 #include "base/macros.h" | |
11 #include "base/process/process_handle.h" | |
12 #include "base/win/scoped_handle.h" | |
13 | |
14 namespace browser_watcher { | |
15 | |
16 // An interface class to take care of the details in launching a browser | |
17 // watch process. | |
18 class WatcherClient { | |
19 public: | |
20 // Constructs a watcher client with a |base_command_line|, which should be | |
21 // a command line sufficient to invoke the watcher process. This command | |
22 // line will be augmented with the value of the inherited handle. | |
23 explicit WatcherClient(const base::CommandLine& base_command_line); | |
24 | |
25 // Launches the watcher process. | |
26 void LaunchWatcher(); | |
27 | |
28 // Accessors, exposed only for testing. | |
29 bool use_legacy_launch() const { return use_legacy_launch_; } | |
30 void set_use_legacy_launch(bool use_legacy_launch) { | |
31 use_legacy_launch_ = use_legacy_launch; | |
32 } | |
33 base::ProcessHandle process() const { return process_.Get(); } | |
34 | |
35 private: | |
36 // Launches |cmd_line| such that the child process is able to inherit | |
37 // |handle|. If |use_legacy_launch_| is true, this uses a non-threadsafe | |
38 // legacy launch mode that's compatible with Windows XP. | |
39 // Returns a handle to the child process. | |
40 base::win::ScopedHandle LaunchWatcherProcess( | |
41 const base::CommandLine& cmd_line, base::ProcessHandle self_handle); | |
42 | |
43 // If true, the watcher process will be launched with XP legacy handle | |
44 // inheritance. This is not thread safe and can leak random handles into the | |
45 // child process, but it's the best we can do on XP. | |
46 bool use_legacy_launch_; | |
47 | |
48 // The base command line passed to the constructor. | |
49 base::CommandLine base_command_line_; | |
50 | |
51 // A handle to the launched watcher process. Valid after a successful | |
52 // LaunchWatcher() call. | |
53 base::win::ScopedHandle process_; | |
54 | |
55 DISALLOW_COPY_AND_ASSIGN(WatcherClient); | |
56 }; | |
57 | |
58 } // namespace browser_watcher | |
59 | |
60 #endif // COMPONENTS_BROWSER_WATCHER_WATCHER_CLIENT_WIN_H_ | |
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