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Side by Side Diff: third_party/WebKit/public/platform/WebTaskRunner.h

Issue 2387113002: reflow comments in public/platform/ (Closed)
Patch Set: Created 4 years, 2 months ago
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1 // Copyright 2015 The Chromium Authors. All rights reserved. 1 // Copyright 2015 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 WebTaskRunner_h 5 #ifndef WebTaskRunner_h
6 #define WebTaskRunner_h 6 #define WebTaskRunner_h
7 7
8 #include "WebCommon.h" 8 #include "WebCommon.h"
9 #include "base/callback_forward.h" 9 #include "base/callback_forward.h"
10 #include "public/platform/WebTraceLocation.h" 10 #include "public/platform/WebTraceLocation.h"
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51 51
52 // Returns a clone of the WebTaskRunner. 52 // Returns a clone of the WebTaskRunner.
53 virtual std::unique_ptr<WebTaskRunner> clone() = 0; 53 virtual std::unique_ptr<WebTaskRunner> clone() = 0;
54 54
55 // Returns true if the current thread is a thread on which a task may be run. 55 // Returns true if the current thread is a thread on which a task may be run.
56 // Can be called from any thread. 56 // Can be called from any thread.
57 virtual bool runsTasksOnCurrentThread() = 0; 57 virtual bool runsTasksOnCurrentThread() = 0;
58 58
59 // --- 59 // ---
60 60
61 // Headless Chrome virtualises time for determinism and performance (fast forw arding 61 // Headless Chrome virtualises time for determinism and performance (fast
62 // of timers). To make this work some parts of blink (e.g. Timers) need to use virtual 62 // forwarding of timers). To make this work some parts of blink (e.g. Timers)
63 // time, however by default new code should use the normal non-virtual time AP Is. 63 // need to use virtual time, however by default new code should use the normal
64 // non-virtual time APIs.
64 65
65 // Returns a double which is the number of seconds since epoch (Jan 1, 1970). 66 // Returns a double which is the number of seconds since epoch (Jan 1, 1970).
66 // This may represent either the real time, or a virtual time depending on 67 // This may represent either the real time, or a virtual time depending on
67 // whether or not the WebTaskRunner is associated with a virtual time domain o r a 68 // whether or not the WebTaskRunner is associated with a virtual time domain
68 // real time domain. 69 // or a real time domain.
69 virtual double virtualTimeSeconds() const = 0; 70 virtual double virtualTimeSeconds() const = 0;
70 71
71 // Returns a microsecond resolution platform dependant time source. 72 // Returns a microsecond resolution platform dependant time source.
72 // This may represent either the real time, or a virtual time depending on 73 // This may represent either the real time, or a virtual time depending on
73 // whether or not the WebTaskRunner is associated with a virtual time domain o r a 74 // whether or not the WebTaskRunner is associated with a virtual time domain
74 // real time domain. 75 // or a real time domain.
75 virtual double monotonicallyIncreasingVirtualTimeSeconds() const = 0; 76 virtual double monotonicallyIncreasingVirtualTimeSeconds() const = 0;
76 77
77 // Returns the underlying task runner object. 78 // Returns the underlying task runner object.
78 virtual SingleThreadTaskRunner* toSingleThreadTaskRunner() = 0; 79 virtual SingleThreadTaskRunner* toSingleThreadTaskRunner() = 0;
79 80
80 #ifdef INSIDE_BLINK 81 #ifdef INSIDE_BLINK
81 // Helpers for posting bound functions as tasks. 82 // Helpers for posting bound functions as tasks.
82 83
83 // For cross-thread posting. Can be called from any thread. 84 // For cross-thread posting. Can be called from any thread.
84 void postTask(const WebTraceLocation&, std::unique_ptr<CrossThreadClosure>); 85 void postTask(const WebTraceLocation&, std::unique_ptr<CrossThreadClosure>);
85 void postDelayedTask(const WebTraceLocation&, 86 void postDelayedTask(const WebTraceLocation&,
86 std::unique_ptr<CrossThreadClosure>, 87 std::unique_ptr<CrossThreadClosure>,
87 long long delayMs); 88 long long delayMs);
88 89
89 // For same-thread posting. Must be called from the associated WebThread. 90 // For same-thread posting. Must be called from the associated WebThread.
90 void postTask(const WebTraceLocation&, std::unique_ptr<WTF::Closure>); 91 void postTask(const WebTraceLocation&, std::unique_ptr<WTF::Closure>);
91 void postDelayedTask(const WebTraceLocation&, 92 void postDelayedTask(const WebTraceLocation&,
92 std::unique_ptr<WTF::Closure>, 93 std::unique_ptr<WTF::Closure>,
93 long long delayMs); 94 long long delayMs);
94 #endif 95 #endif
95 }; 96 };
96 97
97 } // namespace blink 98 } // namespace blink
98 99
99 #endif // WebTaskRunner_h 100 #endif // WebTaskRunner_h
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