d779b4bd81
Backed out changeset e5c32a502e0f (bug 1915419) Backed out changeset 8cbcbb25fc99 (bug 1915419) Backed out changeset 947379a2f167 (bug 1915419) Backed out changeset 4cfe3a954ade (bug 1915419) Backed out changeset 94fba1a2786b (bug 1915419) Backed out changeset 477b4f7c2760 (bug 1915419) Backed out changeset ed6c8d9d39d4 (bug 1915419) Backed out changeset e534c390101c (bug 1915419) Backed out changeset bc3fe74a8b03 (bug 1915419) Backed out changeset afefdce605f9 (bug 1915419) Backed out changeset e58887b90d39 (bug 1915419) Backed out changeset 114298b7b855 (bug 1915419)
81 lines
2.5 KiB
C++
81 lines
2.5 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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#ifndef mozilla_SharedStyleSheetCache_h__
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#define mozilla_SharedStyleSheetCache_h__
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// The shared style sheet cache is a cache that allows us to share sheets across
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// documents.
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//
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// It's generally a singleton, but it is different from GlobalStyleSheetCache in
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// the sense that:
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//
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// * It needs to be cycle-collectable, as it can keep alive style sheets from
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// various documents.
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//
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// * It is conceptually a singleton, but given its cycle-collectable nature, we
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// might re-create it.
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#include "mozilla/SharedSubResourceCache.h"
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#include "nsRefPtrHashtable.h"
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#include "mozilla/MemoryReporting.h"
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#include "mozilla/css/Loader.h"
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namespace mozilla {
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class StyleSheet;
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class SheetLoadDataHashKey;
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namespace css {
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class SheetLoadData;
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class Loader;
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} // namespace css
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struct SharedStyleSheetCacheTraits {
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using Loader = css::Loader;
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using Key = SheetLoadDataHashKey;
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using Value = StyleSheet;
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using LoadingValue = css::SheetLoadData;
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static SheetLoadDataHashKey KeyFromLoadingValue(const LoadingValue& aValue) {
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return SheetLoadDataHashKey(aValue);
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}
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};
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class SharedStyleSheetCache final
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: public SharedSubResourceCache<SharedStyleSheetCacheTraits,
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SharedStyleSheetCache>,
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public nsIMemoryReporter {
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public:
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using Base = SharedSubResourceCache<SharedStyleSheetCacheTraits,
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SharedStyleSheetCache>;
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NS_DECL_ISUPPORTS
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NS_DECL_NSIMEMORYREPORTER
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SharedStyleSheetCache();
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void Init();
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// This has to be static because it's also called for loaders that don't have
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// a sheet cache (loaders that are not owned by a document).
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static void LoadCompleted(SharedStyleSheetCache*, css::SheetLoadData&,
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nsresult);
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using Base::LoadCompleted;
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static void LoadCompletedInternal(SharedStyleSheetCache*, css::SheetLoadData&,
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nsTArray<RefPtr<css::SheetLoadData>>&);
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static void Clear(nsIPrincipal* aForPrincipal = nullptr,
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const nsACString* aBaseDomain = nullptr);
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protected:
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void InsertIfNeeded(css::SheetLoadData&);
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~SharedStyleSheetCache();
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};
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} // namespace mozilla
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#endif
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