114 lines
2.6 KiB
C++
114 lines
2.6 KiB
C++
/* -*- 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 "nsIGlobalObject.h"
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#include "nsContentUtils.h"
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#include "nsThreadUtils.h"
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#include "nsHostObjectProtocolHandler.h"
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nsIGlobalObject::~nsIGlobalObject()
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{
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UnlinkHostObjectURIs();
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}
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nsIPrincipal*
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nsIGlobalObject::PrincipalOrNull()
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{
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JSObject *global = GetGlobalJSObject();
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if (NS_WARN_IF(!global))
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return nullptr;
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return nsContentUtils::ObjectPrincipal(global);
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}
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void
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nsIGlobalObject::RegisterHostObjectURI(const nsACString& aURI)
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{
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MOZ_ASSERT(!mHostObjectURIs.Contains(aURI));
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mHostObjectURIs.AppendElement(aURI);
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}
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void
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nsIGlobalObject::UnregisterHostObjectURI(const nsACString& aURI)
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{
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mHostObjectURIs.RemoveElement(aURI);
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}
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namespace {
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class UnlinkHostObjectURIsRunnable final : public nsRunnable
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{
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public:
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explicit UnlinkHostObjectURIsRunnable(nsTArray<nsCString>& aURIs)
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{
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mURIs.SwapElements(aURIs);
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}
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NS_IMETHOD Run() override
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{
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MOZ_ASSERT(NS_IsMainThread());
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for (uint32_t index = 0; index < mURIs.Length(); ++index) {
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nsHostObjectProtocolHandler::RemoveDataEntry(mURIs[index]);
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}
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return NS_OK;
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}
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private:
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~UnlinkHostObjectURIsRunnable() {}
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nsTArray<nsCString> mURIs;
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};
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} // namespace
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void
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nsIGlobalObject::UnlinkHostObjectURIs()
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{
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if (mHostObjectURIs.IsEmpty()) {
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return;
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}
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if (NS_IsMainThread()) {
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for (uint32_t index = 0; index < mHostObjectURIs.Length(); ++index) {
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nsHostObjectProtocolHandler::RemoveDataEntry(mHostObjectURIs[index]);
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}
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mHostObjectURIs.Clear();
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return;
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}
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// nsHostObjectProtocolHandler is main-thread only.
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RefPtr<UnlinkHostObjectURIsRunnable> runnable =
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new UnlinkHostObjectURIsRunnable(mHostObjectURIs);
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MOZ_ASSERT(mHostObjectURIs.IsEmpty());
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nsresult rv = NS_DispatchToMainThread(runnable);
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if (NS_FAILED(rv)) {
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NS_WARNING("Failed to dispatch a runnable to the main-thread.");
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}
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}
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void
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nsIGlobalObject::TraverseHostObjectURIs(nsCycleCollectionTraversalCallback &aCb)
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{
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if (mHostObjectURIs.IsEmpty()) {
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return;
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}
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// Currently we only store BlobImpl objects off the the main-thread and they
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// are not CCed.
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if (!NS_IsMainThread()) {
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return;
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}
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for (uint32_t index = 0; index < mHostObjectURIs.Length(); ++index) {
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nsHostObjectProtocolHandler::Traverse(mHostObjectURIs[index], aCb);
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}
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}
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