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| 1 /* | |
| 2 * Copyright (C) 2012 Google Inc. All rights reserved. | |
| 3 * | |
| 4 * Redistribution and use in source and binary forms, with or without | |
| 5 * modification, are permitted provided that the following conditions are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #ifndef WebScopedMicrotaskSuppression_h | |
| 32 #define WebScopedMicrotaskSuppression_h | |
| 33 | |
| 34 #include "../platform/WebPrivateOwnPtr.h" | |
| 35 | |
| 36 namespace blink { | |
| 37 | |
| 38 // This class wraps V8RecursionScope::BypassMicrotaskCheckpoint. Please | |
| 39 // see V8RecursionScope.h for full usage. Short story: Embedder calls into | |
| 40 // script contexts which also host page script must do one of two things: | |
| 41 // | |
| 42 // 1. If the call may cause any page/author script to run, it must be | |
| 43 // captured for pre/post work (e.g. inspector instrumentation/microtask | |
| 44 // delivery) and thus be invoked through WebFrame (e.g. executeScript*, | |
| 45 // callFunction*). | |
| 46 // 2. If the call will not cause any page/author script to run, the call | |
| 47 // should be made directly via the v8 context, but the callsite must be | |
| 48 // accompanied by a stack allocated WebScopedMicrotaskSuppression, e.g.: | |
| 49 // | |
| 50 // ... | |
| 51 // { | |
| 52 // blink::WebScopedMicrotaskSuppression suppression; | |
| 53 // func->Call(global, argv, args); | |
| 54 // } | |
| 55 // ... | |
| 56 // | |
| 57 class WebScopedMicrotaskSuppression { | |
| 58 public: | |
| 59 WebScopedMicrotaskSuppression() { initialize(); } | |
| 60 ~WebScopedMicrotaskSuppression() { reset(); } | |
| 61 | |
| 62 private: | |
| 63 BLINK_EXPORT void initialize(); | |
| 64 BLINK_EXPORT void reset(); | |
| 65 | |
| 66 // Always declare this data member. When assertions are on in | |
| 67 // Release builds of Blink, this header may be included from | |
| 68 // Chromium with different preprocessor options than used when | |
| 69 // building Blink itself. | |
| 70 class Impl; | |
| 71 WebPrivateOwnPtr<Impl> m_impl; | |
| 72 }; | |
| 73 | |
| 74 } // namespace blink | |
| 75 | |
| 76 #endif | |
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Chromium Code Reviews
Issue 1769273004:
Remove V8RecrusionScope, cleanup call sites. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master