зеркало из https://github.com/mozilla/gecko-dev.git
58 строки
1.8 KiB
C++
58 строки
1.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef DOM_MEDIA_PRINCIPALHANDLE_H_
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#define DOM_MEDIA_PRINCIPALHANDLE_H_
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#include "nsIPrincipal.h"
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#include "nsProxyRelease.h"
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namespace mozilla {
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/**
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* We pass the principal through the MediaTrackGraph by wrapping it in a thread
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* safe nsMainThreadPtrHandle, since it cannot be used directly off the main
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* thread. We can compare two PrincipalHandles to each other on any thread, but
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* they can only be created and converted back to nsIPrincipal* on main thread.
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*/
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typedef nsMainThreadPtrHandle<nsIPrincipal> PrincipalHandle;
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inline PrincipalHandle MakePrincipalHandle(nsIPrincipal* aPrincipal) {
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RefPtr<nsMainThreadPtrHolder<nsIPrincipal>> holder =
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new nsMainThreadPtrHolder<nsIPrincipal>(
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"MakePrincipalHandle::nsIPrincipal", aPrincipal);
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return PrincipalHandle(holder);
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}
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#define PRINCIPAL_HANDLE_NONE nullptr
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inline nsIPrincipal* GetPrincipalFromHandle(
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const PrincipalHandle& aPrincipalHandle) {
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MOZ_ASSERT(NS_IsMainThread());
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return aPrincipalHandle.get();
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}
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inline bool PrincipalHandleMatches(const PrincipalHandle& aPrincipalHandle,
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nsIPrincipal* aOther) {
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if (!aOther) {
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return false;
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}
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nsIPrincipal* principal = GetPrincipalFromHandle(aPrincipalHandle);
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if (!principal) {
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return false;
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}
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bool result;
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if (NS_FAILED(principal->Equals(aOther, &result))) {
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NS_ERROR("Principal check failed");
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return false;
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}
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return result;
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}
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} // namespace mozilla
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#endif // DOM_MEDIA_PRINCIPALHANDLE_H_
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