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128c09ccdd
We do some initialization of gfxFontSrcURI and gfxFontFaceSrc that is main thread only on the DOM worker threads. These portions of the initialization can easily be deferred to on demand access since they are only ever used on the main thread itself. Differential Revision: https://phabricator.services.mozilla.com/D153461
113 lines
2.9 KiB
C++
113 lines
2.9 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "gfxFontSrcURI.h"
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#include "mozilla/ServoStyleSet.h"
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#include "nsIProtocolHandler.h"
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#include "nsProxyRelease.h"
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#include "nsNetUtil.h"
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#include "nsSimpleURI.h"
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#include "nsURIHashKey.h"
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static bool HasFlag(nsIURI* aURI, uint32_t aFlag) {
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nsresult rv;
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bool value = false;
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rv = NS_URIChainHasFlags(aURI, aFlag, &value);
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return NS_SUCCEEDED(rv) && value;
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}
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gfxFontSrcURI::gfxFontSrcURI(nsIURI* aURI) : mURI(aURI) {
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MOZ_ASSERT(aURI);
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// If we have a data: URI, we know that it is backed by an nsSimpleURI,
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// and that we don't need to serialize it ahead of time.
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nsCString scheme;
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mURI->GetScheme(scheme);
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if (scheme.EqualsLiteral("data")) {
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// We know that nsSimpleURI::From returns us a pointer to the same object,
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// and we hold a strong reference to the object in mURI, so no need to
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// hold it strongly here as well. (And we'd have to
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// NS_ReleaseOnMainThread it in our destructor anyway.)
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RefPtr<mozilla::net::nsSimpleURI> simpleURI =
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mozilla::net::nsSimpleURI::From(aURI);
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mSimpleURI = simpleURI;
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NS_ASSERTION(mSimpleURI,
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"Why aren't our data: URLs backed by nsSimpleURI?");
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} else {
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mSimpleURI = nullptr;
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}
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if (!mSimpleURI) {
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mURI->GetSpec(mSpec);
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}
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mHash = nsURIHashKey::HashKey(mURI);
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}
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gfxFontSrcURI::~gfxFontSrcURI() = default;
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void gfxFontSrcURI::EnsureInitialized() {
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MOZ_ASSERT(NS_IsMainThread() || mozilla::ServoStyleSet::IsInServoTraversal());
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if (mInitialized) {
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return;
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}
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mInheritsSecurityContext =
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HasFlag(mURI, nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT);
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mSyncLoadIsOK = HasFlag(mURI, nsIProtocolHandler::URI_SYNC_LOAD_IS_OK);
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mInitialized = true;
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}
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bool gfxFontSrcURI::Equals(gfxFontSrcURI* aOther) {
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if (mSimpleURI) {
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if (aOther->mSimpleURI) {
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return mSimpleURI->Equals(aOther->mSimpleURI);
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}
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// The two URIs are probably different. Do a quick check on the
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// schemes before deciding to serialize mSimpleURI (which might be
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// quite large).
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{
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nsCString thisScheme;
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mSimpleURI->GetScheme(thisScheme);
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nsCString otherScheme;
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if (!StringBeginsWith(aOther->mSpec, thisScheme)) {
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return false;
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}
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}
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nsCString thisSpec;
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mSimpleURI->GetSpec(thisSpec);
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return thisSpec == aOther->mSpec;
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}
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if (aOther->mSimpleURI) {
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return aOther->Equals(this);
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}
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return mSpec == aOther->mSpec;
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}
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nsresult gfxFontSrcURI::GetSpec(nsACString& aResult) {
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if (mSimpleURI) {
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return mSimpleURI->GetSpec(aResult);
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}
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aResult = mSpec;
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return NS_OK;
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}
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nsCString gfxFontSrcURI::GetSpecOrDefault() {
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if (mSimpleURI) {
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return mSimpleURI->GetSpecOrDefault();
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}
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return mSpec;
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}
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