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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 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 CHROME_BROWSER_MACH_BROKER_H_ | 5 #ifndef CHROME_BROWSER_MACH_BROKER_H_ |
| 6 #define CHROME_BROWSER_MACH_BROKER_H_ | 6 #define CHROME_BROWSER_MACH_BROKER_H_ |
| 7 #pragma once | 7 #pragma once |
| 8 | 8 |
| 9 #include <map> | 9 #include <map> |
| 10 | 10 |
| 11 #include <mach/mach.h> | 11 #include <mach/mach.h> |
| 12 | 12 |
| 13 #include "base/lock.h" | 13 #include "base/lock.h" |
| 14 #include "base/process.h" | 14 #include "base/process.h" |
| 15 #include "base/process_util.h" | 15 #include "base/process_util.h" |
| 16 #include "base/singleton.h" | 16 #include "base/singleton.h" |
| 17 #include "chrome/common/notification_observer.h" |
| 17 #include "chrome/common/notification_registrar.h" | 18 #include "chrome/common/notification_registrar.h" |
| 18 | 19 |
| 19 // On OS X, the mach_port_t of a process is required to collect metrics about | 20 // On OS X, the mach_port_t of a process is required to collect metrics about |
| 20 // the process. Running |task_for_pid()| is only allowed for privileged code. | 21 // the process. Running |task_for_pid()| is only allowed for privileged code. |
| 21 // However, a process has port rights to all its subprocesses, so let the | 22 // However, a process has port rights to all its subprocesses, so let the |
| 22 // browser's child processes send their Mach port to the browser over IPC. | 23 // browser's child processes send their Mach port to the browser over IPC. |
| 23 // This way, the brower can at least collect metrics of its child processes, | 24 // This way, the brower can at least collect metrics of its child processes, |
| 24 // which is what it's most interested in anyway. | 25 // which is what it's most interested in anyway. |
| 25 // | 26 // |
| 26 // Mach ports can only be sent over Mach IPC, not over the |socketpair()| that | 27 // Mach ports can only be sent over Mach IPC, not over the |socketpair()| that |
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| 77 | 78 |
| 78 // Mutex that guards |mach_map_|. | 79 // Mutex that guards |mach_map_|. |
| 79 mutable Lock lock_; | 80 mutable Lock lock_; |
| 80 | 81 |
| 81 friend class RegisterNotificationTask; | 82 friend class RegisterNotificationTask; |
| 82 DISALLOW_COPY_AND_ASSIGN(MachBroker); | 83 DISALLOW_COPY_AND_ASSIGN(MachBroker); |
| 83 }; | 84 }; |
| 84 | 85 |
| 85 #endif // CHROME_BROWSER_MACH_BROKER_H_ | 86 #endif // CHROME_BROWSER_MACH_BROKER_H_ |
| 86 | 87 |
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