/* * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. * */ #include "precompiled.hpp" #include "gc/g1/g1Arguments.hpp" #include "gc/g1/g1HeterogeneousHeapYoungGenSizer.hpp" #include "gc/g1/heapRegion.hpp" G1HeterogeneousHeapYoungGenSizer::G1HeterogeneousHeapYoungGenSizer() : G1YoungGenSizer() { // will be used later when min and max young size is calculated. _max_young_length = (uint)(G1Arguments::reasonable_max_memory_for_young() / HeapRegion::GrainBytes); } // Since heap is sized potentially to larger value accounting for dram + nvdimm, we need to limit // max young gen size to the available dram. // Call parent class method first and then adjust sizes based on available dram void G1HeterogeneousHeapYoungGenSizer::adjust_max_new_size(uint number_of_heap_regions) { G1YoungGenSizer::adjust_max_new_size(number_of_heap_regions); adjust_lengths_based_on_dram_memory(); } void G1HeterogeneousHeapYoungGenSizer::heap_size_changed(uint new_number_of_heap_regions) { G1YoungGenSizer::heap_size_changed(new_number_of_heap_regions); adjust_lengths_based_on_dram_memory(); } void G1HeterogeneousHeapYoungGenSizer::adjust_lengths_based_on_dram_memory() { _min_desired_young_length = MIN2(_min_desired_young_length, _max_young_length); _max_desired_young_length = MIN2(_max_desired_young_length, _max_young_length); }