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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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16
parser/html/nsHtml5Highlighter.cpp
View file

@ -91,7 +91,7 @@ nsHtml5Highlighter::Start(const nsAutoString& aTitle)
if (length > INT32_MAX) {
length = INT32_MAX;
}
AppendCharacters(aTitle.get(), 0, (int32_t)length);
AppendCharacters(aTitle.BeginReading(), 0, (int32_t)length);
Pop(); // title
Push(nsGkAtoms::link, nsHtml5ViewSourceUtils::NewLinkAttributes());
@ -105,7 +105,7 @@ nsHtml5Highlighter::Start(const nsAutoString& aTitle)
Push(nsGkAtoms::body, nsHtml5ViewSourceUtils::NewBodyAttributes());
nsHtml5HtmlAttributes* preAttrs = new nsHtml5HtmlAttributes(0);
nsString* preId = new nsString(NS_LITERAL_STRING("line1"));
nsHtml5String preId = nsHtml5Portability::newStringFromLiteral("line1");
preAttrs->addAttribute(nsHtml5AttributeName::ATTR_ID, preId, -1);
Push(nsGkAtoms::pre, preAttrs);
@ -618,7 +618,7 @@ nsHtml5Highlighter::FlushOps()
void
nsHtml5Highlighter::MaybeLinkifyAttributeValue(nsHtml5AttributeName* aName,
nsString* aValue)
nsHtml5String aValue)
{
if (!(nsHtml5AttributeName::ATTR_HREF == aName ||
nsHtml5AttributeName::ATTR_SRC == aName ||
@ -630,7 +630,7 @@ nsHtml5Highlighter::MaybeLinkifyAttributeValue(nsHtml5AttributeName* aName,
nsHtml5AttributeName::ATTR_DEFINITIONURL == aName)) {
return;
}
AddViewSourceHref(*aValue);
AddViewSourceHref(aValue);
}
void
@ -717,10 +717,10 @@ nsHtml5Highlighter::AddClass(const char16_t* aClass)
}
void
nsHtml5Highlighter::AddViewSourceHref(const nsString& aValue)
nsHtml5Highlighter::AddViewSourceHref(nsHtml5String aValue)
{
char16_t* bufferCopy = new char16_t[aValue.Length() + 1];
memcpy(bufferCopy, aValue.get(), aValue.Length() * sizeof(char16_t));
aValue.CopyToBuffer(bufferCopy);
bufferCopy[aValue.Length()] = 0;
mOpQueue.AppendElement()->Init(eTreeOpAddViewSourceHref,
@ -730,14 +730,14 @@ nsHtml5Highlighter::AddViewSourceHref(const nsString& aValue)
}
void
nsHtml5Highlighter::AddBase(const nsString& aValue)
nsHtml5Highlighter::AddBase(nsHtml5String aValue)
{
if(mSeenBase) {
return;
}
mSeenBase = true;
char16_t* bufferCopy = new char16_t[aValue.Length() + 1];
memcpy(bufferCopy, aValue.get(), aValue.Length() * sizeof(char16_t));
aValue.CopyToBuffer(bufferCopy);
bufferCopy[aValue.Length()] = 0;
mOpQueue.AppendElement()->Init(eTreeOpAddViewSourceBase,