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Introduce a new non-heap-allocated type for holding nsStringBuffer* in the HTML parser.

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An innerHTML setter profile shows about 10% of the time being spent under nsHtml5HtmlAttributes::clear, mostly deleting nsStrings.
This commit is contained in:
win7-7 2019-07-05 21:58:21 +03:00 • committed by Roy Tam
commit 1be77e0f3f
34 changed files with 719 additions and 358 deletions
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27
parser/html/nsHtml5TreeBuilder.h
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@ -35,7 +35,7 @@
#include "nsIAtom.h"
#include "nsHtml5AtomTable.h"
#include "nsITimer.h"
#include "nsString.h"
#include "nsHtml5String.h"
#include "nsNameSpaceManager.h"
#include "nsIContent.h"
#include "nsTraceRefcnt.h"
@ -103,7 +103,10 @@ class nsHtml5TreeBuilder : public nsAHtml5TreeBuilderState
bool isSrcdocDocument;
public:
void startTokenization(nsHtml5Tokenizer* self);
void doctype(nsIAtom* name, nsString* publicIdentifier, nsString* systemIdentifier, bool forceQuirks);
void doctype(nsIAtom* name,
nsHtml5String publicIdentifier,
nsHtml5String systemIdentifier,
bool forceQuirks);
void comment(char16_t* buf, int32_t start, int32_t length);
void characters(const char16_t* buf, int32_t start, int32_t length);
void zeroOriginatingReplacementCharacter();
@ -119,7 +122,8 @@ class nsHtml5TreeBuilder : public nsAHtml5TreeBuilderState
bool isTemplateModeStackEmpty();
bool isSpecialParentInForeign(nsHtml5StackNode* stackNode);
public:
static nsString* extractCharsetFromContent(nsString* attributeValue, nsHtml5TreeBuilder* tb);
static nsHtml5String extractCharsetFromContent(nsHtml5String attributeValue,
nsHtml5TreeBuilder* tb);
private:
void checkMetaCharset(nsHtml5HtmlAttributes* attributes);
public:
@ -136,9 +140,16 @@ class nsHtml5TreeBuilder : public nsAHtml5TreeBuilderState
void generateImpliedEndTagsExceptFor(nsIAtom* name);
void generateImpliedEndTags();
bool isSecondOnStackBody();
void documentModeInternal(nsHtml5DocumentMode m, nsString* publicIdentifier, nsString* systemIdentifier, bool html4SpecificAdditionalErrorChecks);
bool isAlmostStandards(nsString* publicIdentifier, nsString* systemIdentifier);
bool isQuirky(nsIAtom* name, nsString* publicIdentifier, nsString* systemIdentifier, bool forceQuirks);
void documentModeInternal(nsHtml5DocumentMode m,
nsHtml5String publicIdentifier,
nsHtml5String systemIdentifier,
bool html4SpecificAdditionalErrorChecks);
bool isAlmostStandards(nsHtml5String publicIdentifier,
nsHtml5String systemIdentifier);
bool isQuirky(nsIAtom* name,
nsHtml5String publicIdentifier,
nsHtml5String systemIdentifier,
bool forceQuirks);
void closeTheCell(int32_t eltPos);
int32_t findLastInTableScopeTdTh();
void clearStackBackTo(int32_t eltPos);
@ -224,7 +235,9 @@ class nsHtml5TreeBuilder : public nsAHtml5TreeBuilderState
void markMalformedIfScript(nsIContentHandle* elt);
void start(bool fragmentMode);
void end();
void appendDoctypeToDocument(nsIAtom* name, nsString* publicIdentifier, nsString* systemIdentifier);
void appendDoctypeToDocument(nsIAtom* name,
nsHtml5String publicIdentifier,
nsHtml5String systemIdentifier);
void elementPushed(int32_t ns, nsIAtom* name, nsIContentHandle* node);
void elementPopped(int32_t ns, nsIAtom* name, nsIContentHandle* node);
public: