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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_SharedScriptCache_h
#define mozilla_dom_SharedScriptCache_h
#include "PLDHashTable.h" // PLDHashEntryHdr
#include "js/loader/LoadedScript.h" // JS::loader::LoadedScript
#include "js/loader/ScriptKind.h" // JS::loader::ScriptKind
#include "js/loader/ScriptLoadRequest.h" // JS::loader::ScriptLoadRequest
#include "mozilla/CORSMode.h" // mozilla::CORSMode
#include "mozilla/MemoryReporting.h" // MallocSizeOf
#include "mozilla/RefPtr.h" // RefPtr
#include "mozilla/SharedSubResourceCache.h" // SharedSubResourceCache, SharedSubResourceCacheLoadingValueBase, SubResourceNetworkMetadataHolder
#include "mozilla/WeakPtr.h" // SupportsWeakPtr
#include "mozilla/dom/CacheExpirationTime.h" // CacheExpirationTime
#include "mozilla/dom/SRIMetadata.h" // mozilla::dom::SRIMetadata
#include "nsIMemoryReporter.h" // nsIMemoryReporter, NS_DECL_NSIMEMORYREPORTER
#include "nsIPrincipal.h" // nsIPrincipal
#include "nsISupports.h" // nsISupports, NS_DECL_ISUPPORTS
#include "nsStringFwd.h" // nsACString
namespace mozilla {
namespace dom {
class ScriptLoader;
class ScriptLoadData;
class ScriptHashKey : public PLDHashEntryHdr {
public:
using KeyType = const ScriptHashKey&;
using KeyTypePointer = const ScriptHashKey*;
explicit ScriptHashKey(const ScriptHashKey& aKey)
: PLDHashEntryHdr(),
mURI(aKey.mURI),
mLoaderPrincipal(aKey.mLoaderPrincipal),
mPartitionPrincipal(aKey.mPartitionPrincipal),
mCORSMode(aKey.mCORSMode),
mSRIMetadata(aKey.mSRIMetadata),
mKind(aKey.mKind),
mNonce(aKey.mNonce),
mHintCharset(aKey.mHintCharset),
mIsLinkRelPreload(aKey.mIsLinkRelPreload) {
MOZ_COUNT_CTOR(ScriptHashKey);
}
explicit ScriptHashKey(const ScriptHashKey* aKey) : ScriptHashKey(*aKey) {}
ScriptHashKey(ScriptHashKey&& aKey)
: PLDHashEntryHdr(),
mURI(std::move(aKey.mURI)),
mLoaderPrincipal(std::move(aKey.mLoaderPrincipal)),
mPartitionPrincipal(std::move(aKey.mPartitionPrincipal)),
mCORSMode(std::move(aKey.mCORSMode)),
mSRIMetadata(std::move(aKey.mSRIMetadata)),
mKind(std::move(aKey.mKind)),
mNonce(std::move(aKey.mNonce)),
mHintCharset(std::move(aKey.mHintCharset)),
mIsLinkRelPreload(std::move(aKey.mIsLinkRelPreload)) {
MOZ_COUNT_CTOR(ScriptHashKey);
}
ScriptHashKey(ScriptLoader* aLoader,
const JS::loader::ScriptLoadRequest* aRequest);
explicit ScriptHashKey(const ScriptLoadData& aLoadData);
MOZ_COUNTED_DTOR(ScriptHashKey)
const ScriptHashKey& GetKey() const { return *this; }
const ScriptHashKey* GetKeyPointer() const { return this; }
bool KeyEquals(const ScriptHashKey* aKey) const { return KeyEquals(*aKey); }
bool KeyEquals(const ScriptHashKey&) const;
static const ScriptHashKey* KeyToPointer(const ScriptHashKey& aKey) {
return &aKey;
}
static PLDHashNumber HashKey(const ScriptHashKey* aKey) {
return nsURIHashKey::HashKey(aKey->mURI);
}
nsIPrincipal* LoaderPrincipal() const { return mLoaderPrincipal; }
nsIPrincipal* PartitionPrincipal() const { return mPartitionPrincipal; }
nsIURI* URI() const { return mURI; }
enum { ALLOW_MEMMOVE = true };
protected:
const nsCOMPtr<nsIURI> mURI;
const nsCOMPtr<nsIPrincipal> mLoaderPrincipal;
const nsCOMPtr<nsIPrincipal> mPartitionPrincipal;
const CORSMode mCORSMode;
const SRIMetadata mSRIMetadata;
const JS::loader::ScriptKind mKind;
const nsString mNonce;
// charset attribute for classic script.
// module always use UTF-8.
nsString mHintCharset;
// TODO: Reflect URL classifier data source.
// mozilla::dom::ContentType
// maybe implicit
// top-level document's host
// maybe part of principal?
// what if it's inside frame in different host?
const bool mIsLinkRelPreload;
};
class ScriptLoadData final
: public SupportsWeakPtr,
public nsISupports,
public SharedSubResourceCacheLoadingValueBase<ScriptLoadData> {
protected:
~ScriptLoadData() {}
public:
ScriptLoadData(ScriptLoader* aLoader,
JS::loader::ScriptLoadRequest* aRequest);
NS_DECL_ISUPPORTS
// Only completed loads are used for the cache.
bool IsLoading() const override { return false; }
bool IsCancelled() const override { return false; }
bool IsSyncLoad() const override { return true; }
SubResourceNetworkMetadataHolder* GetNetworkMetadata() const override {
return mNetworkMetadata.get();
}
void StartLoading() override {}
void SetLoadCompleted() override {}
void OnCoalescedTo(const ScriptLoadData& aExistingLoad) override {}
void Cancel() override {}
void DidCancelLoad() {}
bool ShouldDefer() const { return false; }
JS::loader::LoadedScript* ValueForCache() const {
return mLoadedScript.get();
}
const CacheExpirationTime& ExpirationTime() const { return mExpirationTime; }
ScriptLoader& Loader() { return *mLoader; }
const ScriptHashKey& CacheKey() const { return mKey; }
private:
CacheExpirationTime mExpirationTime = CacheExpirationTime::Never();
ScriptLoader* mLoader;
ScriptHashKey mKey;
RefPtr<JS::loader::LoadedScript> mLoadedScript;
RefPtr<SubResourceNetworkMetadataHolder> mNetworkMetadata;
};
struct SharedScriptCacheTraits {
using Loader = ScriptLoader;
using Key = ScriptHashKey;
using Value = JS::loader::LoadedScript;
using LoadingValue = ScriptLoadData;
static ScriptHashKey KeyFromLoadingValue(const LoadingValue& aValue) {
return ScriptHashKey(aValue);
}
};
class SharedScriptCache final
: public SharedSubResourceCache<SharedScriptCacheTraits, SharedScriptCache>,
public nsIMemoryReporter {
public:
using Base =
SharedSubResourceCache<SharedScriptCacheTraits, SharedScriptCache>;
NS_DECL_ISUPPORTS
NS_DECL_NSIMEMORYREPORTER
SharedScriptCache();
void Init();
// This has to be static because it's also called for loaders that don't have
// a sheet cache (loaders that are not owned by a document).
static void LoadCompleted(SharedScriptCache*, ScriptLoadData&);
using Base::LoadCompleted;
static void Clear(const Maybe<bool>& aChrome = Nothing(),
const Maybe<nsCOMPtr<nsIPrincipal>>& aPrincipal = Nothing(),
const Maybe<nsCString>& aSchemelessSite = Nothing(),
const Maybe<OriginAttributesPattern>& aPattern = Nothing(),
const Maybe<nsCString>& aURL = Nothing());
static void PrepareForLastCC();
protected:
~SharedScriptCache();
};
} // namespace dom
} // namespace mozilla
#endif // mozilla_dom_SharedScriptCache_h
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