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Side by Side Diff: base/threading/watchdog.h

Issue 7461141: Rename BASE_API to BASE_EXPORT. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months 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 // The Watchdog class creates a second thread that can Alarm if a specific 5 // The Watchdog class creates a second thread that can Alarm if a specific
6 // duration of time passes without proper attention. The duration of time is 6 // duration of time passes without proper attention. The duration of time is
7 // specified at construction time. The Watchdog may be used many times by 7 // specified at construction time. The Watchdog may be used many times by
8 // simply calling Arm() (to start timing) and Disarm() (to reset the timer). 8 // simply calling Arm() (to start timing) and Disarm() (to reset the timer).
9 // The Watchdog is typically used under a debugger, where the stack traces on 9 // The Watchdog is typically used under a debugger, where the stack traces on
10 // other threads can be examined if/when the Watchdog alarms. 10 // other threads can be examined if/when the Watchdog alarms.
11 11
12 // Some watchdogs will be enabled or disabled via command line switches. To 12 // Some watchdogs will be enabled or disabled via command line switches. To
13 // facilitate such code, an "enabled" argument for the constuctor can be used 13 // facilitate such code, an "enabled" argument for the constuctor can be used
14 // to permanently disable the watchdog. Disabled watchdogs don't even spawn 14 // to permanently disable the watchdog. Disabled watchdogs don't even spawn
15 // a second thread, and their methods call (Arm() and Disarm()) return very 15 // a second thread, and their methods call (Arm() and Disarm()) return very
16 // quickly. 16 // quickly.
17 17
18 #ifndef BASE_THREADING_WATCHDOG_H_ 18 #ifndef BASE_THREADING_WATCHDOG_H_
19 #define BASE_THREADING_WATCHDOG_H_ 19 #define BASE_THREADING_WATCHDOG_H_
20 #pragma once 20 #pragma once
21 21
22 #include <string> 22 #include <string>
23 23
24 #include "base/base_api.h" 24 #include "base/base_export.h"
25 #include "base/synchronization/condition_variable.h" 25 #include "base/synchronization/condition_variable.h"
26 #include "base/synchronization/lock.h" 26 #include "base/synchronization/lock.h"
27 #include "base/threading/platform_thread.h" 27 #include "base/threading/platform_thread.h"
28 #include "base/time.h" 28 #include "base/time.h"
29 29
30 namespace base { 30 namespace base {
31 31
32 class BASE_API Watchdog { 32 class BASE_EXPORT Watchdog {
33 public: 33 public:
34 // Constructor specifies how long the Watchdog will wait before alarming. 34 // Constructor specifies how long the Watchdog will wait before alarming.
35 Watchdog(const TimeDelta& duration, 35 Watchdog(const TimeDelta& duration,
36 const std::string& thread_watched_name, 36 const std::string& thread_watched_name,
37 bool enabled); 37 bool enabled);
38 virtual ~Watchdog(); 38 virtual ~Watchdog();
39 39
40 // Start timing, and alarm when time expires (unless we're disarm()ed.) 40 // Start timing, and alarm when time expires (unless we're disarm()ed.)
41 void Arm(); // Arm starting now. 41 void Arm(); // Arm starting now.
42 void ArmSomeTimeDeltaAgo(const TimeDelta& time_delta); 42 void ArmSomeTimeDeltaAgo(const TimeDelta& time_delta);
(...skipping 47 matching lines...) Expand 10 before | Expand all | Expand 10 after
90 static TimeTicks last_debugged_alarm_time_; 90 static TimeTicks last_debugged_alarm_time_;
91 // How long did we sit on a break in the debugger? 91 // How long did we sit on a break in the debugger?
92 static TimeDelta last_debugged_alarm_delay_; 92 static TimeDelta last_debugged_alarm_delay_;
93 93
94 DISALLOW_COPY_AND_ASSIGN(Watchdog); 94 DISALLOW_COPY_AND_ASSIGN(Watchdog);
95 }; 95 };
96 96
97 } // namespace base 97 } // namespace base
98 98
99 #endif // BASE_THREADING_WATCHDOG_H_ 99 #endif // BASE_THREADING_WATCHDOG_H_
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