1b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// Copyright 2013 the V8 project authors. All rights reserved. 2b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// Redistribution and use in source and binary forms, with or without 3b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// modification, are permitted provided that the following conditions are 4b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// met: 5b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// 6b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// * Redistributions of source code must retain the above copyright 7b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// notice, this list of conditions and the following disclaimer. 8b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// * Redistributions in binary form must reproduce the above 9b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// copyright notice, this list of conditions and the following 10b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// disclaimer in the documentation and/or other materials provided 11b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// with the distribution. 12b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// * Neither the name of Google Inc. nor the names of its 13b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// contributors may be used to endorse or promote products derived 14b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// from this software without specific prior written permission. 15b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// 16b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 28b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org#include "allocation-site-scopes.h" 29b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 30b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.orgnamespace v8 { 31b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.orgnamespace internal { 32b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 33b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 34b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.orgHandle<AllocationSite> AllocationSiteCreationContext::EnterNewScope() { 35b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org Handle<AllocationSite> scope_site; 36b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org if (top().is_null()) { 37b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org // We are creating the top level AllocationSite as opposed to a nested 38b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org // AllocationSite. 39b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org InitializeTraversal(isolate()->factory()->NewAllocationSite()); 40b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org scope_site = Handle<AllocationSite>(*top(), isolate()); 41b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org if (FLAG_trace_creation_allocation_sites) { 42b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org PrintF("*** Creating top level AllocationSite %p\n", 43b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*scope_site)); 44b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } 45b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } else { 46b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org ASSERT(!current().is_null()); 47b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org scope_site = isolate()->factory()->NewAllocationSite(); 48b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org if (FLAG_trace_creation_allocation_sites) { 49b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org PrintF("Creating nested site (top, current, new) (%p, %p, %p)\n", 50b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*top()), 51b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*current()), 52b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*scope_site)); 53b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } 54b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org current()->set_nested_site(*scope_site); 55b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org update_current_site(*scope_site); 56b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } 57b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org ASSERT(!scope_site.is_null()); 58b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org return scope_site; 59b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org} 60b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 61b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 62b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.orgvoid AllocationSiteCreationContext::ExitScope( 63b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org Handle<AllocationSite> scope_site, 64b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org Handle<JSObject> object) { 65b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org if (!object.is_null() && !object->IsFailure()) { 66b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org bool top_level = !scope_site.is_null() && 67b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org top().is_identical_to(scope_site); 68b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 69b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org scope_site->set_transition_info(*object); 70b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org if (FLAG_trace_creation_allocation_sites) { 71b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org if (top_level) { 72b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org PrintF("*** Setting AllocationSite %p transition_info %p\n", 73b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*scope_site), 74b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*object)); 75b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } else { 76b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org PrintF("Setting AllocationSite (%p, %p) transition_info %p\n", 77b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*top()), 78b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*scope_site), 79b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org static_cast<void*>(*object)); 80b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } 81b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } 82b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org } 83b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org} 84b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org 85c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org 86c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.orgbool AllocationSiteUsageContext::ShouldCreateMemento(Handle<JSObject> object) { 87c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org if (activated_ && AllocationSite::CanTrack(object->map()->instance_type())) { 88c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org if (FLAG_allocation_site_pretenuring || 89c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org AllocationSite::GetMode(object->GetElementsKind()) == 90c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org TRACK_ALLOCATION_SITE) { 91c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org if (FLAG_trace_creation_allocation_sites) { 92c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org PrintF("*** Creating Memento for %s %p\n", 93c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org object->IsJSArray() ? "JSArray" : "JSObject", 94c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org static_cast<void*>(*object)); 95c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org } 96c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org return true; 97c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org } 98c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org } 99c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org return false; 100c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org} 101c86e8c29eea534916f0d6a2a285b65a86d1b3b67machenbach@chromium.org 102b4968bea48ba224f54110f626278e2c04649dd5bmstarzinger@chromium.org} } // namespace v8::internal 103