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1 /* | 1 /* |
2 * Copyright (C) 2011 Google Inc. All rights reserved. | 2 * Copyright (C) 2011 Google Inc. All rights reserved. |
3 * | 3 * |
4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
5 * modification, are permitted provided that the following conditions | 5 * modification, are permitted provided that the following conditions |
6 * are met: | 6 * are met: |
7 * | 7 * |
8 * 1. Redistributions of source code must retain the above copyright | 8 * 1. Redistributions of source code must retain the above copyright |
9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
10 * 2. Redistributions in binary form must reproduce the above copyright | 10 * 2. Redistributions in binary form must reproduce the above copyright |
(...skipping 10 matching lines...) Expand all Loading... |
21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | 21 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
24 */ | 24 */ |
25 #ifndef WebThread_h | 25 #ifndef WebThread_h |
26 #define WebThread_h | 26 #define WebThread_h |
27 | 27 |
28 #include "WebCommon.h" | 28 #include "WebCommon.h" |
29 #include <stdint.h> | 29 #include <stdint.h> |
30 | 30 |
31 #ifdef INSIDE_BLINK | |
32 #include "wtf/Functional.h" | |
33 #endif | |
34 | |
35 namespace blink { | 31 namespace blink { |
36 class WebScheduler; | 32 class WebScheduler; |
37 class WebTaskRunner; | 33 class WebTaskRunner; |
38 class WebTraceLocation; | 34 class WebTraceLocation; |
39 | 35 |
40 // Always an integer value. | 36 // Always an integer value. |
41 typedef uintptr_t PlatformThreadId; | 37 typedef uintptr_t PlatformThreadId; |
42 | 38 |
43 // Provides an interface to an embedder-defined thread implementation. | 39 // Provides an interface to an embedder-defined thread implementation. |
44 // | 40 // |
45 // Deleting the thread blocks until all pending, non-delayed tasks have been | 41 // Deleting the thread blocks until all pending, non-delayed tasks have been |
46 // run. | 42 // run. |
47 class BLINK_PLATFORM_EXPORT WebThread { | 43 class BLINK_PLATFORM_EXPORT WebThread { |
48 public: | 44 public: |
49 // An IdleTask is passed a deadline in CLOCK_MONOTONIC seconds and is | 45 // An IdleTask is passed a deadline in CLOCK_MONOTONIC seconds and is |
50 // expected to complete before this deadline. | 46 // expected to complete before this deadline. |
51 class IdleTask { | 47 class IdleTask { |
52 public: | 48 public: |
53 virtual ~IdleTask() { } | 49 virtual ~IdleTask() { } |
54 virtual void run(double deadlineSeconds) = 0; | 50 virtual void run(double deadlineSeconds) = 0; |
55 }; | 51 }; |
56 | 52 |
| 53 // TODO(alexclarke): Remove this once it's no longer referenced by chromium. |
57 class BLINK_PLATFORM_EXPORT Task { | 54 class BLINK_PLATFORM_EXPORT Task { |
58 public: | 55 public: |
59 virtual ~Task() { } | 56 virtual ~Task() { } |
60 virtual void run() = 0; | 57 virtual void run() = 0; |
61 }; | 58 }; |
62 | 59 |
63 class BLINK_PLATFORM_EXPORT TaskObserver { | 60 class BLINK_PLATFORM_EXPORT TaskObserver { |
64 public: | 61 public: |
65 virtual ~TaskObserver() { } | 62 virtual ~TaskObserver() { } |
66 virtual void willProcessTask() = 0; | 63 virtual void willProcessTask() = 0; |
67 virtual void didProcessTask() = 0; | 64 virtual void didProcessTask() = 0; |
68 }; | 65 }; |
69 | 66 |
70 // postTask() and postDelayedTask() take ownership of the passed Task | |
71 // object. It is safe to invoke postTask() and postDelayedTask() from any | |
72 // thread. | |
73 // TODO(alexclarke): Remove postTask & postDelayedTask. | |
74 virtual void postTask(const WebTraceLocation&, Task*) = 0; | |
75 virtual void postDelayedTask(const WebTraceLocation&, Task*, long long delay
Ms) = 0; | |
76 | |
77 // Returns a WebTaskRunner bound to the underlying scheduler's default task
queue. | |
78 virtual WebTaskRunner* defaultTaskRunner() { return nullptr; } | 67 virtual WebTaskRunner* defaultTaskRunner() { return nullptr; } |
79 | 68 |
80 virtual bool isCurrentThread() const = 0; | 69 virtual bool isCurrentThread() const = 0; |
81 virtual PlatformThreadId threadId() const { return 0; } | 70 virtual PlatformThreadId threadId() const { return 0; } |
82 | 71 |
83 virtual void addTaskObserver(TaskObserver*) { } | 72 virtual void addTaskObserver(TaskObserver*) { } |
84 virtual void removeTaskObserver(TaskObserver*) { } | 73 virtual void removeTaskObserver(TaskObserver*) { } |
85 | 74 |
86 // Returns the scheduler associated with the thread. | 75 // Returns the scheduler associated with the thread. |
87 virtual WebScheduler* scheduler() const = 0; | 76 virtual WebScheduler* scheduler() const = 0; |
88 | 77 |
89 virtual ~WebThread() { } | 78 virtual ~WebThread() { } |
90 | |
91 #ifdef INSIDE_BLINK | |
92 // Helpers for posting bound functions as tasks. | |
93 void postTask(const WebTraceLocation&, PassOwnPtr<Function<void()>>); | |
94 void postDelayedTask(const WebTraceLocation&, PassOwnPtr<Function<void()>>,
long long delayMs); | |
95 #endif | |
96 }; | 79 }; |
97 | 80 |
98 } // namespace blink | 81 } // namespace blink |
99 | 82 |
100 #endif | 83 #endif |
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