src/objects.cc - Issue 141046: Added descriptor lookup cache to eliminate some search overhead....

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Unified Diff: src/objects.cc

Issue 141046: Added descriptor lookup cache to eliminate some search overhead.... (Closed) Base URL: http://v8.googlecode.com/svn/branches/bleeding_edge/

Patch Set: Created 11 years, 6 months ago

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Index: src/objects.cc

===================================================================

--- src/objects.cc (revision 2237)

+++ src/objects.cc (working copy)

@@ -1565,7 +1565,11 @@

void JSObject::LookupInDescriptor(String* name, LookupResult* result) {

DescriptorArray* descriptors = map()->instance_descriptors();

- int number = descriptors->Search(name);

+ int number = DescriptorLookupCache::Lookup(descriptors, name);

+ if (number == DescriptorLookupCache::kAbsent) {

+ number = descriptors->Search(name);

+ DescriptorLookupCache::Update(descriptors, name, number);

+ }

if (number != DescriptorArray::kNotFound) {

result->DescriptorResult(this, descriptors->GetDetails(number), number);

} else {

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