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1 /* | 1 /* |
2 * Copyright (C) 2014 Google Inc. All rights reserved. | 2 * Copyright (C) 2014 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 are | 5 * modification, are permitted provided that the following conditions are |
6 * met: | 6 * met: |
7 * | 7 * |
8 * * Redistributions of source code must retain the above copyright | 8 * * 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 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
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46 unsigned numberOfLiveResources; | 46 unsigned numberOfLiveResources; |
47 unsigned numberOfLiveActiveDOMObjects; | 47 unsigned numberOfLiveActiveDOMObjects; |
48 unsigned numberOfLiveScriptPromises; | 48 unsigned numberOfLiveScriptPromises; |
49 unsigned numberOfLiveFrames; | 49 unsigned numberOfLiveFrames; |
50 unsigned numberOfLiveV8PerContextData; | 50 unsigned numberOfLiveV8PerContextData; |
51 }; | 51 }; |
52 | 52 |
53 virtual void onLeakDetectionComplete(const Result&) = 0; | 53 virtual void onLeakDetectionComplete(const Result&) = 0; |
54 }; | 54 }; |
55 | 55 |
| 56 // |WebLeakDetector| detects leaks of various Blink objects, counting |
| 57 // the ones remaining after having reset Blink's global state and |
| 58 // collected all garbage. See |WebLeakDetectorClient::Results| |
| 59 // for the kinds of objects supported. |
56 class WebLeakDetector { | 60 class WebLeakDetector { |
57 public: | 61 public: |
58 virtual ~WebLeakDetector() { } | 62 virtual ~WebLeakDetector() { } |
59 | 63 |
60 BLINK_EXPORT static WebLeakDetector* create(WebLeakDetectorClient*); | 64 BLINK_EXPORT static WebLeakDetector* create(WebLeakDetectorClient*); |
61 | 65 |
62 // Cleans up the DOM objects and counts them. |WebLeakDetectorClient::onLeak
DetectionComplete()| is called when done. | 66 // Leak detection is performed in two stages, |
63 // This is supposed to be used for detecting DOM-object leaks. | 67 // |prepareForLeakDetection()| and |collectGarbageAndReport()|. |
64 virtual void collectGarbageAndGetDOMCounts(WebLocalFrame*) = 0; | 68 // |
| 69 // The first clearing out various global resources that a frame |
| 70 // keeps, with the second clearing out all garbage in Blink's |
| 71 // managed heaps before reporting leak counts. |
| 72 // |
| 73 // |WebLeakDetectorClient::onLeakDetectionComplete()| is called |
| 74 // with the result of the (leaked) resource counting. |
| 75 // |
| 76 // By separating into two, the caller is able to inject any |
| 77 // additional releasing of resources needed before the garbage |
| 78 // collections go ahead. |
| 79 |
| 80 // Perform initial stage of preparing for leak detection, |
| 81 // releasing references to resources held globally. |
| 82 virtual void prepareForLeakDetection(WebLocalFrame*) = 0; |
| 83 |
| 84 // Garbage collect Blink's heaps and report leak counts. |
| 85 // |WebLeakDetectorClient::onLeakDetectionComplete()| is called |
| 86 // upon completion. |
| 87 virtual void collectGarbageAndReport() = 0; |
65 }; | 88 }; |
66 | 89 |
67 } // namespace blink | 90 } // namespace blink |
68 | 91 |
69 #endif // WebLeakDetector_h | 92 #endif // WebLeakDetector_h |
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