src/hotspot/share/gc/z/zNUMA.cpp

/*
 * 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 "precompiled.hpp"
#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";
}