| // Copyright 2013 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| #include "allocation-site-scopes.h" |
| |
| namespace v8 { |
| namespace internal { |
| |
| |
| Handle<AllocationSite> AllocationSiteCreationContext::EnterNewScope() { |
| Handle<AllocationSite> scope_site; |
| if (top().is_null()) { |
| // We are creating the top level AllocationSite as opposed to a nested |
| // AllocationSite. |
| InitializeTraversal(isolate()->factory()->NewAllocationSite()); |
| scope_site = Handle<AllocationSite>(*top(), isolate()); |
| if (FLAG_trace_creation_allocation_sites) { |
| PrintF("*** Creating top level AllocationSite %p\n", |
| static_cast<void*>(*scope_site)); |
| } |
| } else { |
| ASSERT(!current().is_null()); |
| scope_site = isolate()->factory()->NewAllocationSite(); |
| if (FLAG_trace_creation_allocation_sites) { |
| PrintF("Creating nested site (top, current, new) (%p, %p, %p)\n", |
| static_cast<void*>(*top()), |
| static_cast<void*>(*current()), |
| static_cast<void*>(*scope_site)); |
| } |
| current()->set_nested_site(*scope_site); |
| update_current_site(*scope_site); |
| } |
| ASSERT(!scope_site.is_null()); |
| return scope_site; |
| } |
| |
| |
| void AllocationSiteCreationContext::ExitScope( |
| Handle<AllocationSite> scope_site, |
| Handle<JSObject> object) { |
| if (!object.is_null() && !object->IsFailure()) { |
| bool top_level = !scope_site.is_null() && |
| top().is_identical_to(scope_site); |
| |
| scope_site->set_transition_info(*object); |
| if (FLAG_trace_creation_allocation_sites) { |
| if (top_level) { |
| PrintF("*** Setting AllocationSite %p transition_info %p\n", |
| static_cast<void*>(*scope_site), |
| static_cast<void*>(*object)); |
| } else { |
| PrintF("Setting AllocationSite (%p, %p) transition_info %p\n", |
| static_cast<void*>(*top()), |
| static_cast<void*>(*scope_site), |
| static_cast<void*>(*object)); |
| } |
| } |
| } |
| } |
| |
| |
| 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. |
| ASSERT(nested_site->IsAllocationSite()); |
| 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. |
| ASSERT(object.is_null() || *object == scope_site->transition_info()); |
| } |
| |
| } } // namespace v8::internal |