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1 /* | 1 /* |
2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 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 |
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45 // | 45 // |
46 // 1. Calls into page/author script from a frame | 46 // 1. Calls into page/author script from a frame |
47 // 2. Calls into page/author script from a worker | 47 // 2. Calls into page/author script from a worker |
48 // 3. Calls into internal script (typically setup/teardown work) | 48 // 3. Calls into internal script (typically setup/teardown work) |
49 // | 49 // |
50 // Debug-time checking of this is enforced via v8::MicrotasksScope. | 50 // Debug-time checking of this is enforced via v8::MicrotasksScope. |
51 // | 51 // |
52 // Calls of type (1) should generally go through ScriptController, as inspector | 52 // Calls of type (1) should generally go through ScriptController, as inspector |
53 // instrumentation is needed. ScriptController allocates V8RecursionScope for yo
u. | 53 // instrumentation is needed. ScriptController allocates V8RecursionScope for yo
u. |
54 // | 54 // |
55 // Calls of type (2) should always stack-allocate a v8::MicrotasksScope(kRunMicr
toasks) | 55 // Calls of type (2) should always stack-allocate a v8::MicrotasksScope(kRunMicr
otasks) |
56 // in the same block as the call into script. | 56 // in the same block as the call into script. |
57 // | 57 // |
58 // Calls of type (3) should stack allocate a v8::MicrotasksScope(kDoNotRunMicrot
asks) -- | 58 // Calls of type (3) should stack allocate a v8::MicrotasksScope(kDoNotRunMicrot
asks) -- |
59 // this skips work that is spec'd to happen at the end of the outer-most | 59 // this skips work that is spec'd to happen at the end of the outer-most |
60 // script stack frame of calls into page script: | 60 // script stack frame of calls into page script: |
61 // http://www.whatwg.org/specs/web-apps/current-work/#perform-a-microtask-checkp
oint | 61 // http://www.whatwg.org/specs/web-apps/current-work/#perform-a-microtask-checkp
oint |
62 class CORE_EXPORT Microtask { | 62 class CORE_EXPORT Microtask { |
63 STATIC_ONLY(Microtask); | 63 STATIC_ONLY(Microtask); |
64 public: | 64 public: |
65 static void performCheckpoint(v8::Isolate*); | 65 static void performCheckpoint(v8::Isolate*); |
66 | 66 |
67 // TODO(jochen): Make all microtasks pass in the ScriptState they want to be | 67 // TODO(jochen): Make all microtasks pass in the ScriptState they want to be |
68 // executed in. Until then, all microtasks have to keep track of their | 68 // executed in. Until then, all microtasks have to keep track of their |
69 // ScriptState themselves. | 69 // ScriptState themselves. |
70 static void enqueueMicrotask(std::unique_ptr<SameThreadClosure>); | 70 static void enqueueMicrotask(std::unique_ptr<SameThreadClosure>); |
71 }; | 71 }; |
72 | 72 |
73 } // namespace blink | 73 } // namespace blink |
74 | 74 |
75 #endif // Microtask_h | 75 #endif // Microtask_h |
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