зеркало из https://github.com/mozilla/gecko-dev.git
64 строки
1.6 KiB
C++
64 строки
1.6 KiB
C++
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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WeakPointer.h"
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#include "mozilla/dom/ScriptSettings.h"
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#include "mozilla/StaticMutex.h"
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#include "jsapi.h"
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#include <unordered_map>
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namespace mozilla {
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namespace recordreplay {
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typedef std::unordered_map<const void*, UniquePtr<JS::PersistentRootedObject>> WeakPointerRootMap;
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static WeakPointerRootMap* gWeakPointerRootMap;
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static StaticMutexNotRecorded gWeakPointerMutex;
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static UniquePtr<JS::PersistentRootedObject>
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NewRoot(JSObject* aJSObj)
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{
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MOZ_RELEASE_ASSERT(aJSObj);
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JSContext* cx = dom::danger::GetJSContext();
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UniquePtr<JS::PersistentRootedObject> root = MakeUnique<JS::PersistentRootedObject>(cx);
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*root = aJSObj;
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return root;
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}
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extern "C" {
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MOZ_EXPORT void
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RecordReplayInterface_SetWeakPointerJSRoot(const void* aPtr, JSObject* aJSObj)
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{
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MOZ_RELEASE_ASSERT(IsReplaying());
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StaticMutexAutoLock lock(gWeakPointerMutex);
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auto iter = gWeakPointerRootMap->find(aPtr);
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if (iter != gWeakPointerRootMap->end()) {
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if (aJSObj) {
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*iter->second = aJSObj;
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} else {
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gWeakPointerRootMap->erase(aPtr);
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}
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} else if (aJSObj) {
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gWeakPointerRootMap->insert(WeakPointerRootMap::value_type(aPtr, NewRoot(aJSObj)));
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}
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}
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} // extern "C"
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void
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InitializeWeakPointers()
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{
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gWeakPointerRootMap = new WeakPointerRootMap();
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}
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} // namespace recordreplay
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} // namespace mozilla
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