// Copyright 2018 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef V8_OBJECTS_ALLOCATION_SITE_SCOPES_INL_H_ #define V8_OBJECTS_ALLOCATION_SITE_SCOPES_INL_H_ #include "src/objects/allocation-site-scopes.h" #include "src/objects/allocation-site-inl.h" namespace v8 { namespace internal { void AllocationSiteContext::InitializeTraversal(Handle<AllocationSite> site) { top_ = site; // {current_} is updated in place to not create unnecessary Handles, hence // we initially need a separate handle. current_ = Handle<AllocationSite>::New(*top_, isolate()); } Handle<AllocationSite> AllocationSiteUsageContext::EnterNewScope() { if (top().is_null()) { InitializeTraversal(top_site_); } else { // Advance current site Object nested_site = current()->nested_site(); // Something is wrong if we advance to the end of the list here. update_current_site(AllocationSite::cast(nested_site)); } return Handle<AllocationSite>(*current(), isolate()); } void AllocationSiteUsageContext::ExitScope(Handle<AllocationSite> scope_site, Handle<JSObject> object) { // This assert ensures that we are pointing at the right sub-object in a // recursive walk of a nested literal. DCHECK(object.is_null() || *object == scope_site->boilerplate()); } bool AllocationSiteUsageContext::ShouldCreateMemento(Handle<JSObject> object) { if (activated_ && AllocationSite::CanTrack(object->map().instance_type())) { if (FLAG_allocation_site_pretenuring || AllocationSite::ShouldTrack(object->GetElementsKind())) { if (FLAG_trace_creation_allocation_sites) { PrintF("*** Creating Memento for %s %p\n", object->IsJSArray() ? "JSArray" : "JSObject", reinterpret_cast<void*>(object->ptr())); } return true; } } return false; } } // namespace internal } // namespace v8 #endif // V8_OBJECTS_ALLOCATION_SITE_SCOPES_INL_H_