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| 1 /* | |
| 2 * Copyright (C) 2013 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 | |
| 6 * are met: | |
| 7 * | |
| 8 * 1. Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * 2. Redistributions in binary form must reproduce the above copyright | |
| 11 * notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * 3. Neither the name of Google Inc. nor the names of its contributors | |
| 15 * may be used to endorse or promote products derived from this | |
| 16 * 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 Microtask_h | |
| 32 #define Microtask_h | |
| 33 | |
| 34 #include "core/CoreExport.h" | |
| 35 #include "public/platform/WebTaskRunner.h" | |
| 36 #include "wtf/Allocator.h" | |
| 37 #include "wtf/Functional.h" | |
| 38 #include "wtf/PassOwnPtr.h" | |
| 39 #include <v8.h> | |
| 40 | |
| 41 namespace blink { | |
| 42 | |
| 43 // C++ calls into script contexts which are "owned" by blink (created in a | |
| 44 // process where WebKit.cpp initializes v8) must declare their type: | |
| 45 // | |
| 46 // 1. Calls into page/author script from a frame | |
| 47 // 2. Calls into page/author script from a worker | |
| 48 // 3. Calls into internal script (typically setup/teardown work) | |
| 49 // | |
| 50 // Debug-time checking of this is enforced via v8::MicrotasksScope. | |
| 51 // | |
| 52 // Calls of type (1) should generally go through ScriptController, as inspector | |
| 53 // instrumentation is needed. ScriptController allocates V8RecursionScope for yo
u. | |
| 54 // | |
| 55 // Calls of type (2) should always stack-allocate a v8::MicrotasksScope(kRunMicr
toasks) | |
| 56 // in the same block as the call into script. | |
| 57 // | |
| 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 | |
| 60 // script stack frame of calls into page script: | |
| 61 // http://www.whatwg.org/specs/web-apps/current-work/#perform-a-microtask-checkp
oint | |
| 62 class CORE_EXPORT Microtask { | |
| 63 STATIC_ONLY(Microtask); | |
| 64 public: | |
| 65 static void performCheckpoint(v8::Isolate*); | |
| 66 | |
| 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 | |
| 69 // ScriptState themselves. | |
| 70 static void enqueueMicrotask(PassOwnPtr<WebTaskRunner::Task>); | |
| 71 static void enqueueMicrotask(PassOwnPtr<SameThreadClosure>); | |
| 72 }; | |
| 73 | |
| 74 } // namespace blink | |
| 75 | |
| 76 #endif // Microtask_h | |
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Chromium Code Reviews
Issue 1804043002:
Revert of Remove V8RecrusionScope, cleanup call sites. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master