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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 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 #ifndef CONTENT_BROWSER_MACH_BROKER_MAC_H_ | 5 #ifndef CONTENT_BROWSER_MACH_BROKER_MAC_H_ |
6 #define CONTENT_BROWSER_MACH_BROKER_MAC_H_ | 6 #define CONTENT_BROWSER_MACH_BROKER_MAC_H_ |
7 | 7 |
8 #include <map> | 8 #include <map> |
9 #include <string> | 9 #include <string> |
10 | 10 |
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37 class CONTENT_EXPORT MachBroker : public base::ProcessMetrics::PortProvider, | 37 class CONTENT_EXPORT MachBroker : public base::ProcessMetrics::PortProvider, |
38 public BrowserChildProcessObserver, | 38 public BrowserChildProcessObserver, |
39 public NotificationObserver { | 39 public NotificationObserver { |
40 public: | 40 public: |
41 // For use in child processes. This will send the task port of the current | 41 // For use in child processes. This will send the task port of the current |
42 // process over Mach IPC to the port registered by name (via this class) in | 42 // process over Mach IPC to the port registered by name (via this class) in |
43 // the parent process. Returns true if the message was sent successfully | 43 // the parent process. Returns true if the message was sent successfully |
44 // and false if otherwise. | 44 // and false if otherwise. |
45 static bool ChildSendTaskPortToParent(); | 45 static bool ChildSendTaskPortToParent(); |
46 | 46 |
47 // Returns the Mach port name to use when sending or receiving messages. | |
48 // Does the Right Thing in the browser and in child processes. | |
49 static std::string GetMachPortName(); | |
50 | |
51 // Returns the global MachBroker. | 47 // Returns the global MachBroker. |
52 static MachBroker* GetInstance(); | 48 static MachBroker* GetInstance(); |
53 | 49 |
54 // The lock that protects this MachBroker object. Clients MUST acquire and | 50 // The lock that protects this MachBroker object. Clients MUST acquire and |
55 // release this lock around calls to EnsureRunning(), PlaceholderForPid(), | 51 // release this lock around calls to EnsureRunning(), PlaceholderForPid(), |
56 // and FinalizePid(). | 52 // and FinalizePid(). |
57 base::Lock& GetLock(); | 53 base::Lock& GetLock(); |
58 | 54 |
59 // Performs any necessary setup that cannot happen in the constructor. | 55 // Performs any necessary setup that cannot happen in the constructor. |
60 // Callers MUST acquire the lock given by GetLock() before calling this | 56 // Callers MUST acquire the lock given by GetLock() before calling this |
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90 | 86 |
91 // Updates the mapping for |pid| to include the given |mach_info|. Does | 87 // Updates the mapping for |pid| to include the given |mach_info|. Does |
92 // nothing if PlaceholderForPid() has not already been called for the given | 88 // nothing if PlaceholderForPid() has not already been called for the given |
93 // |pid|. Callers MUST acquire the lock given by GetLock() before calling | 89 // |pid|. Callers MUST acquire the lock given by GetLock() before calling |
94 // this method (and release the lock afterwards). | 90 // this method (and release the lock afterwards). |
95 void FinalizePid(base::ProcessHandle pid, mach_port_t task_port); | 91 void FinalizePid(base::ProcessHandle pid, mach_port_t task_port); |
96 | 92 |
97 // Removes all mappings belonging to |pid| from the broker. | 93 // Removes all mappings belonging to |pid| from the broker. |
98 void InvalidatePid(base::ProcessHandle pid); | 94 void InvalidatePid(base::ProcessHandle pid); |
99 | 95 |
| 96 // Returns the Mach port name to use when sending or receiving messages. |
| 97 // Does the Right Thing in the browser and in child processes. |
| 98 static std::string GetMachPortName(); |
100 // Callback used to register notifications on the UI thread. | 99 // Callback used to register notifications on the UI thread. |
101 void RegisterNotifications(); | 100 void RegisterNotifications(); |
102 | 101 |
103 // True if the listener thread has been started. | 102 // True if the listener thread has been started. |
104 bool listener_thread_started_; | 103 bool listener_thread_started_; |
105 | 104 |
106 // Used to register for notifications received by NotificationObserver. | 105 // Used to register for notifications received by NotificationObserver. |
107 // Accessed only on the UI thread. | 106 // Accessed only on the UI thread. |
108 NotificationRegistrar registrar_; | 107 NotificationRegistrar registrar_; |
109 | 108 |
110 // Stores mach info for every process in the broker. | 109 // Stores mach info for every process in the broker. |
111 typedef std::map<base::ProcessHandle, mach_port_t> MachMap; | 110 typedef std::map<base::ProcessHandle, mach_port_t> MachMap; |
112 MachMap mach_map_; | 111 MachMap mach_map_; |
113 | 112 |
114 // Mutex that guards |mach_map_|. | 113 // Mutex that guards |mach_map_|. |
115 mutable base::Lock lock_; | 114 mutable base::Lock lock_; |
116 | 115 |
117 DISALLOW_COPY_AND_ASSIGN(MachBroker); | 116 DISALLOW_COPY_AND_ASSIGN(MachBroker); |
118 }; | 117 }; |
119 | 118 |
120 } // namespace content | 119 } // namespace content |
121 | 120 |
122 #endif // CONTENT_BROWSER_MACH_BROKER_MAC_H_ | 121 #endif // CONTENT_BROWSER_MACH_BROKER_MAC_H_ |
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