--- a/src/hotspot/share/gc/g1/g1HeterogeneousCollectorPolicy.cpp Thu May 02 10:38:00 2019 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,103 +0,0 @@
-/*
- * Copyright (c) 2018, 2019, 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/g1HeterogeneousCollectorPolicy.hpp"
-#include "logging/log.hpp"
-#include "runtime/globals_extension.hpp"
-#include "runtime/os.hpp"
-#include "utilities/formatBuffer.hpp"
-
-const double G1HeterogeneousCollectorPolicy::MaxRamFractionForYoung = 0.8;
-size_t G1HeterogeneousCollectorPolicy::MaxMemoryForYoung;
-
-static size_t calculate_reasonable_max_memory_for_young(FormatBuffer<100> &calc_str, double max_ram_fraction_for_young) {
- julong phys_mem;
- // If MaxRam is specified, we use that as maximum physical memory available.
- if (FLAG_IS_DEFAULT(MaxRAM)) {
- phys_mem = os::physical_memory();
- calc_str.append("Physical_Memory");
- } else {
- phys_mem = (julong)MaxRAM;
- calc_str.append("MaxRAM");
- }
-
- julong reasonable_max = phys_mem;
-
- // If either MaxRAMFraction or MaxRAMPercentage is specified, we use them to calculate
- // reasonable max size of young generation.
- if (!FLAG_IS_DEFAULT(MaxRAMFraction)) {
- reasonable_max = (julong)(phys_mem / MaxRAMFraction);
- calc_str.append(" / MaxRAMFraction");
- } else if (!FLAG_IS_DEFAULT(MaxRAMPercentage)) {
- reasonable_max = (julong)((phys_mem * MaxRAMPercentage) / 100);
- calc_str.append(" * MaxRAMPercentage / 100");
- } else {
- // We use our own fraction to calculate max size of young generation.
- reasonable_max = phys_mem * max_ram_fraction_for_young;
- calc_str.append(" * %0.2f", max_ram_fraction_for_young);
- }
-
- return (size_t)reasonable_max;
-}
-
-void G1HeterogeneousCollectorPolicy::initialize_flags() {
-
- FormatBuffer<100> calc_str("");
-
- MaxMemoryForYoung = calculate_reasonable_max_memory_for_young(calc_str, MaxRamFractionForYoung);
-
- if (MaxNewSize > MaxMemoryForYoung) {
- if (FLAG_IS_CMDLINE(MaxNewSize)) {
- log_warning(gc, ergo)("Setting MaxNewSize to " SIZE_FORMAT " based on dram available (calculation = align(%s))",
- MaxMemoryForYoung, calc_str.buffer());
- } else {
- log_info(gc, ergo)("Setting MaxNewSize to " SIZE_FORMAT " based on dram available (calculation = align(%s)). "
- "Dram usage can be lowered by setting MaxNewSize to a lower value", MaxMemoryForYoung, calc_str.buffer());
- }
- MaxNewSize = MaxMemoryForYoung;
- }
- if (NewSize > MaxMemoryForYoung) {
- if (FLAG_IS_CMDLINE(NewSize)) {
- log_warning(gc, ergo)("Setting NewSize to " SIZE_FORMAT " based on dram available (calculation = align(%s))",
- MaxMemoryForYoung, calc_str.buffer());
- }
- NewSize = MaxMemoryForYoung;
- }
-
- // After setting new size flags, call base class initialize_flags()
- G1CollectorPolicy::initialize_flags();
-}
-
-size_t G1HeterogeneousCollectorPolicy::reasonable_max_memory_for_young() {
- return MaxMemoryForYoung;
-}
-
-size_t G1HeterogeneousCollectorPolicy::heap_reserved_size_bytes() const {
- return 2 * _max_heap_byte_size;
-}
-
-bool G1HeterogeneousCollectorPolicy::is_heterogeneous_heap() const {
- return true;
-}