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author | Moonchild <moonchild@palemoon.org> | 2020-08-24 11:11:17 +0000 |
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committer | Moonchild <moonchild@palemoon.org> | 2020-08-30 09:47:49 +0000 |
commit | d58cb8e11b15c054f0773918cd7fd89ce2a7464e (patch) | |
tree | 380d82f3b0ad12222da2338da83408b97b402634 | |
parent | 429a7bdb93e443236f4a4b04afc9a12c78f54247 (diff) | |
download | UXP-d58cb8e11b15c054f0773918cd7fd89ce2a7464e.tar UXP-d58cb8e11b15c054f0773918cd7fd89ce2a7464e.tar.gz UXP-d58cb8e11b15c054f0773918cd7fd89ce2a7464e.tar.lz UXP-d58cb8e11b15c054f0773918cd7fd89ce2a7464e.tar.xz UXP-d58cb8e11b15c054f0773918cd7fd89ce2a7464e.zip |
Issue #618 - (async, preload) Correctly pass info about async/defer to parser.
This makes sure we don't block body-referred sub-resources by head-referenced
defer and async scripts. This is important for all script loads, not just
modules, but is added here because it was run into while implementing modules.
-rw-r--r-- | dom/script/ScriptLoader.cpp | 12 | ||||
-rw-r--r-- | dom/script/ScriptLoader.h | 6 | ||||
-rw-r--r-- | parser/html/nsHtml5SpeculativeLoad.cpp | 11 | ||||
-rw-r--r-- | parser/html/nsHtml5SpeculativeLoad.h | 13 | ||||
-rw-r--r-- | parser/html/nsHtml5TreeBuilderCppSupplement.h | 16 | ||||
-rw-r--r-- | parser/html/nsHtml5TreeOpExecutor.cpp | 6 | ||||
-rw-r--r-- | parser/html/nsHtml5TreeOpExecutor.h | 4 |
7 files changed, 53 insertions, 15 deletions
diff --git a/dom/script/ScriptLoader.cpp b/dom/script/ScriptLoader.cpp index 58f0c0bbe..9216be835 100644 --- a/dom/script/ScriptLoader.cpp +++ b/dom/script/ScriptLoader.cpp @@ -1050,15 +1050,17 @@ ScriptLoader::StartLoad(ScriptLoadRequest *aRequest, const nsAString &aType, NS_ENSURE_SUCCESS(rv, rv); nsIScriptElement *script = aRequest->mElement; + bool async = script ? script->GetScriptAsync() : aRequest->mPreloadAsAsync; + bool defer = script ? script->GetScriptDeferred() : aRequest->mPreloadAsDefer; + nsCOMPtr<nsIClassOfService> cos(do_QueryInterface(channel)); if (cos) { - if (aScriptFromHead && - !(script && (script->GetScriptAsync() || script->GetScriptDeferred()))) { + if (aScriptFromHead && !async && !defer) { // synchronous head scripts block lading of most other non js/css // content such as images cos->AddClassFlags(nsIClassOfService::Leader); - } else if (!(script && script->GetScriptDeferred())) { + } else if (!defer) { // other scripts are neither blocked nor prioritized unless marked deferred cos->AddClassFlags(nsIClassOfService::Unblocked); } @@ -2571,6 +2573,8 @@ ScriptLoader::PreloadURI(nsIURI *aURI, const nsAString &aCharset, const nsAString &aCrossOrigin, const nsAString& aIntegrity, bool aScriptFromHead, + bool aAsync, + bool aDefer, const mozilla::net::ReferrerPolicy aReferrerPolicy) { NS_ENSURE_TRUE_VOID(mDocument); @@ -2601,6 +2605,8 @@ ScriptLoader::PreloadURI(nsIURI *aURI, const nsAString &aCharset, Element::StringToCORSMode(aCrossOrigin), sriMetadata, aReferrerPolicy); request->mIsInline = false; + request->mPreloadAsAsync = aAsync; + request->mPreloadAsDefer = aDefer; nsresult rv = StartLoad(request, aType, aScriptFromHead); if (NS_FAILED(rv)) { diff --git a/dom/script/ScriptLoader.h b/dom/script/ScriptLoader.h index 61680a3ee..b7e20c7ee 100644 --- a/dom/script/ScriptLoader.h +++ b/dom/script/ScriptLoader.h @@ -76,6 +76,8 @@ public: mHasSourceMapURL(false), mInDeferList(false), mInAsyncList(false), + mPreloadAsAsync(false), + mPreloadAsDefer(false), mIsNonAsyncScriptInserted(false), mIsXSLT(false), mIsCanceled(false), @@ -161,6 +163,8 @@ public: bool mHasSourceMapURL; // Does the HTTP header have a source map url? bool mInDeferList; // True if we live in mDeferRequests. bool mInAsyncList; // True if we live in mLoadingAsyncRequests or mLoadedAsyncRequests. + bool mPreloadAsAsync; // True if this is a preload request and the script is async + bool mPreloadAsDefer; // True if this is a preload request and the script is defer bool mIsNonAsyncScriptInserted; // True if we live in mNonAsyncExternalScriptInsertedRequests bool mIsXSLT; // True if we live in mXSLTRequests. bool mIsCanceled; // True if we have been explicitly canceled. @@ -459,6 +463,8 @@ public: const nsAString &aCrossOrigin, const nsAString& aIntegrity, bool aScriptFromHead, + bool aAsync, + bool aDefer, const mozilla::net::ReferrerPolicy aReferrerPolicy); /** diff --git a/parser/html/nsHtml5SpeculativeLoad.cpp b/parser/html/nsHtml5SpeculativeLoad.cpp index 8ffc4d063..7bae0699f 100644 --- a/parser/html/nsHtml5SpeculativeLoad.cpp +++ b/parser/html/nsHtml5SpeculativeLoad.cpp @@ -6,9 +6,12 @@ #include "nsHtml5TreeOpExecutor.h" nsHtml5SpeculativeLoad::nsHtml5SpeculativeLoad() + : #ifdef DEBUG - : mOpCode(eSpeculativeLoadUninitialized) + mOpCode(eSpeculativeLoadUninitialized), #endif + mIsAsync(false), + mIsDefer(false) { MOZ_COUNT_CTOR(nsHtml5SpeculativeLoad); } @@ -48,11 +51,13 @@ nsHtml5SpeculativeLoad::Perform(nsHtml5TreeOpExecutor* aExecutor) break; case eSpeculativeLoadScript: aExecutor->PreloadScript(mUrl, mCharset, mTypeOrCharsetSourceOrDocumentMode, - mCrossOrigin, mIntegrity, false); + mCrossOrigin, mIntegrity, false, + mIsAsync, mIsDefer); break; case eSpeculativeLoadScriptFromHead: aExecutor->PreloadScript(mUrl, mCharset, mTypeOrCharsetSourceOrDocumentMode, - mCrossOrigin, mIntegrity, true); + mCrossOrigin, mIntegrity, true, + mIsAsync, mIsDefer); break; case eSpeculativeLoadStyle: aExecutor->PreloadStyle(mUrl, mCharset, mCrossOrigin, mIntegrity); diff --git a/parser/html/nsHtml5SpeculativeLoad.h b/parser/html/nsHtml5SpeculativeLoad.h index 6f1365bcf..fcc84de4f 100644 --- a/parser/html/nsHtml5SpeculativeLoad.h +++ b/parser/html/nsHtml5SpeculativeLoad.h @@ -128,7 +128,9 @@ class nsHtml5SpeculativeLoad { nsHtml5String aType, nsHtml5String aCrossOrigin, nsHtml5String aIntegrity, - bool aParserInHead) + bool aParserInHead, + bool aAsync, + bool aDefer) { NS_PRECONDITION(mOpCode == eSpeculativeLoadUninitialized, "Trying to reinitialize a speculative load!"); @@ -139,6 +141,8 @@ class nsHtml5SpeculativeLoad { aType.ToString(mTypeOrCharsetSourceOrDocumentMode); aCrossOrigin.ToString(mCrossOrigin); aIntegrity.ToString(mIntegrity); + mIsAsync = aAsync; + mIsDefer = aDefer; } inline void InitStyle(nsHtml5String aUrl, @@ -221,6 +225,13 @@ class nsHtml5SpeculativeLoad { private: eHtml5SpeculativeLoad mOpCode; + + /** + * Whether the refering element has async and/or defer attributes. + */ + bool mIsAsync; + bool mIsDefer; + nsString mUrl; nsString mReferrerPolicy; nsString mMetaCSP; diff --git a/parser/html/nsHtml5TreeBuilderCppSupplement.h b/parser/html/nsHtml5TreeBuilderCppSupplement.h index aacc5a3e0..9709396c7 100644 --- a/parser/html/nsHtml5TreeBuilderCppSupplement.h +++ b/parser/html/nsHtml5TreeBuilderCppSupplement.h @@ -167,16 +167,20 @@ nsHtml5TreeBuilder::createElement(int32_t aNamespace, nsIAtom* aName, aAttributes->getValue(nsHtml5AttributeName::ATTR_CROSSORIGIN); nsHtml5String integrity = aAttributes->getValue(nsHtml5AttributeName::ATTR_INTEGRITY); + bool async = + aAttributes->contains(nsHtml5AttributeName::ATTR_ASYNC); + bool defer = + aAttributes->contains(nsHtml5AttributeName::ATTR_DEFER); mSpeculativeLoadQueue.AppendElement()->InitScript( url, charset, type, crossOrigin, integrity, - mode == NS_HTML5TREE_BUILDER_IN_HEAD); - mCurrentHtmlScriptIsAsyncOrDefer = - aAttributes->contains(nsHtml5AttributeName::ATTR_ASYNC) || - aAttributes->contains(nsHtml5AttributeName::ATTR_DEFER); + mode == NS_HTML5TREE_BUILDER_IN_HEAD, + async, + defer); + mCurrentHtmlScriptIsAsyncOrDefer = async || defer; } } else if (nsHtml5Atoms::link == aName) { nsHtml5String rel = @@ -279,7 +283,9 @@ nsHtml5TreeBuilder::createElement(int32_t aNamespace, nsIAtom* aName, type, crossOrigin, integrity, - mode == NS_HTML5TREE_BUILDER_IN_HEAD); + mode == NS_HTML5TREE_BUILDER_IN_HEAD, + false /* async */, + false /* defer */); } } else if (nsHtml5Atoms::style == aName) { nsHtml5TreeOperation* treeOp = mOpQueue.AppendElement(); diff --git a/parser/html/nsHtml5TreeOpExecutor.cpp b/parser/html/nsHtml5TreeOpExecutor.cpp index 3ed634d0c..9be7f3b0d 100644 --- a/parser/html/nsHtml5TreeOpExecutor.cpp +++ b/parser/html/nsHtml5TreeOpExecutor.cpp @@ -921,14 +921,16 @@ nsHtml5TreeOpExecutor::PreloadScript(const nsAString& aURL, const nsAString& aType, const nsAString& aCrossOrigin, const nsAString& aIntegrity, - bool aScriptFromHead) + bool aScriptFromHead, + bool aAsync, + bool aDefer) { nsCOMPtr<nsIURI> uri = ConvertIfNotPreloadedYet(aURL); if (!uri) { return; } mDocument->ScriptLoader()->PreloadURI(uri, aCharset, aType, aCrossOrigin, - aIntegrity, aScriptFromHead, + aIntegrity, aScriptFromHead, aAsync, aDefer, mSpeculationReferrerPolicy); } diff --git a/parser/html/nsHtml5TreeOpExecutor.h b/parser/html/nsHtml5TreeOpExecutor.h index c4b6a4594..64a5daa96 100644 --- a/parser/html/nsHtml5TreeOpExecutor.h +++ b/parser/html/nsHtml5TreeOpExecutor.h @@ -249,7 +249,9 @@ class nsHtml5TreeOpExecutor final : public nsHtml5DocumentBuilder, const nsAString& aType, const nsAString& aCrossOrigin, const nsAString& aIntegrity, - bool aScriptFromHead); + bool aScriptFromHead, + bool aAsync, + bool aDefer); void PreloadStyle(const nsAString& aURL, const nsAString& aCharset, const nsAString& aCrossOrigin, |