src/hotspot/share/gc/z/zNUMA.cpp
author pliden
Tue, 12 Jun 2018 17:40:28 +0200
changeset 50525 767cdb97f103
child 58236 312126722609
permissions -rw-r--r--
8204210: Implementation: JEP 333: ZGC: A Scalable Low-Latency Garbage Collector (Experimental) Reviewed-by: pliden, stefank, eosterlund, ehelin, sjohanss, rbackman, coleenp, ihse, jgeorge, lmesnik, rkennke Contributed-by: per.liden@oracle.com, stefan.karlsson@oracle.com, erik.osterlund@oracle.com, mikael.gerdin@oracle.com, kim.barrett@oracle.com, nils.eliasson@oracle.com, rickard.backman@oracle.com, rwestrel@redhat.com, coleen.phillimore@oracle.com, robbin.ehn@oracle.com, gerard.ziemski@oracle.com, hugh.wilkinson@intel.com, sandhya.viswanathan@intel.com, bill.npo.wheeler@intel.com, vinay.k.awasthi@intel.com, yasuenag@gmail.com

/*
 * Copyright (c) 2016, 2017, 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 "gc/z/zNUMA.hpp"
#include "logging/log.hpp"
#include "runtime/os.hpp"

bool ZNUMA::_enabled;

void ZNUMA::initialize() {
  initialize_platform();

  log_info(gc, init)("NUMA Support: %s", to_string());
  if (is_enabled()) {
    log_info(gc, init)("NUMA Nodes: %u", count());
  }
}

bool ZNUMA::is_enabled() {
  return _enabled;
}

void ZNUMA::memory_interleave(uintptr_t addr, size_t size) {
  if (!_enabled) {
    // NUMA support not enabled
    return;
  }

  os::numa_make_global((char*)addr, size);
}

const char* ZNUMA::to_string() {
  return _enabled ? "Enabled" : "Disabled";
}