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85 lines
2.6 KiB
C++
85 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 "mozilla/dom/cache/ManagerId.h"
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#include "nsIPrincipal.h"
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#include "nsProxyRelease.h"
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#include "nsRefPtr.h"
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#include "nsThreadUtils.h"
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namespace mozilla {
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namespace dom {
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namespace cache {
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// static
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nsresult
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ManagerId::Create(nsIPrincipal* aPrincipal, ManagerId** aManagerIdOut)
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{
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MOZ_ASSERT(NS_IsMainThread());
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// The QuotaManager::GetInfoFromPrincipal() has special logic for system
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// and about: principals. We currently don't need the system principal logic
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// because ManagerId only uses the origin for in memory comparisons. We
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// also don't do any special logic to host the same Cache for different about:
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// pages, so we don't need those checks either.
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//
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// But, if we get the same QuotaManager directory for different about:
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// origins, we probably only want one Manager instance. So, we might
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// want to start using the QM's concept of origin uniqueness here.
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//
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// TODO: consider using QuotaManager's modified origin here (bug 1112071)
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nsCString origin;
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nsresult rv = aPrincipal->GetOriginNoSuffix(origin);
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if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
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nsCString jarPrefix;
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rv = aPrincipal->GetJarPrefix(jarPrefix);
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if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
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nsRefPtr<ManagerId> ref = new ManagerId(aPrincipal, origin, jarPrefix);
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ref.forget(aManagerIdOut);
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return NS_OK;
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}
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already_AddRefed<nsIPrincipal>
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ManagerId::Principal() const
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{
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MOZ_ASSERT(NS_IsMainThread());
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nsCOMPtr<nsIPrincipal> ref = mPrincipal;
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return ref.forget();
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}
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ManagerId::ManagerId(nsIPrincipal* aPrincipal, const nsACString& aOrigin,
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const nsACString& aJarPrefix)
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: mPrincipal(aPrincipal)
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, mExtendedOrigin(aJarPrefix + aOrigin)
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{
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MOZ_ASSERT(mPrincipal);
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}
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ManagerId::~ManagerId()
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{
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// If we're already on the main thread, then default destruction is fine
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if (NS_IsMainThread()) {
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return;
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}
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// Otherwise we need to proxy to main thread to do the release
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// The PBackground worker thread shouldn't be running after the main thread
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// is stopped. So main thread is guaranteed to exist here.
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nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
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MOZ_ASSERT(mainThread);
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NS_ProxyRelease(mainThread, mPrincipal.forget().take());
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}
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} // namespace cache
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} // namespace dom
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} // namespace mozilla
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