/* * Copyright (c) 2009 Apple Inc. All rights reserved. * * @APPLE_APACHE_LICENSE_HEADER_START@ * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. * * @APPLE_APACHE_LICENSE_HEADER_END@ */ /* AutoWriteBarrierIterator.h Copyright (c) 2004-2009 Apple Inc. All rights reserved. */ #pragma once #ifndef __AUTO_WRITEBARRIERITERATOR__ #define __AUTO_WRITEBARRIERITERATOR__ #include "AutoAdmin.h" #include "AutoDefs.h" #include "AutoLarge.h" #include "AutoRangeIterator.h" #include "AutoRegion.h" #include "AutoSubzone.h" #include "AutoWriteBarrier.h" #include "AutoZone.h" namespace Auto { //----- WriteBarrierIterator -----// // // Visit all the write barriers. // template <class Visitor> bool visitWriteBarriers(Zone *zone, Visitor &visitor) { // iterate through the regions first for (Region *region = zone->region_list(); region != NULL; region = region->next()) { // iterate through the subzones SubzoneRangeIterator iterator(region->subzone_range()); while (Subzone *subzone = iterator.next()) { // extract the write barrier information WriteBarrier& wb = subzone->write_barrier(); // let the visitor visit the write barrier if (!visitor.visit(zone, wb)) return false; } } // iterate through the large blocks list. we assume that either the large_lock() is held, // or that the collector has made large block deallocation lazy. for (Large *large = zone->large_list(); large != NULL; large = large->next()) { // skip unscanned large blocks, which have no write-barrier cards. if (!large->is_scanned()) continue; // extract the write barrier information WriteBarrier& wb = large->write_barrier(); // let the visitor visit the write barrier if (!visitor.visit(zone, wb)) return false; } return true; } }; #endif // __AUTO_WRITEBARRIERITERATOR__