/*
 * Copyright (c) 2016, 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/shared/gc.hpp"
#include "gc/serial/serialGC.hpp"
#include "runtime/globals.hpp"
#include "utilities/globalDefinitions.hpp"
#include "utilities/macros.hpp"

#if INCLUDE_ALL_GCS
#include "gc/parallel/parallelGC.hpp"
#include "gc/cms/concurrentMarkSweepGC.hpp"
#include "gc/g1/g1GC.hpp"
#endif

GC* GC::_gc = NULL;

jint GC::initialize() {
  assert(_gc == NULL, "GC already created");
#if !INCLUDE_ALL_GCS
  if (UseParallelGC) {
    fatal("UseParallelGC not supported in this VM.");
  } else if (UseG1GC) {
    fatal("UseG1GC not supported in this VM.");
  } else if (UseConcMarkSweepGC) {
    fatal("UseConcMarkSweepGC not supported in this VM.");
#else
  if (UseParallelGC) {
    _gc = new ParallelGC();
  } else if (UseG1GC) {
    _gc = new G1GC();
  } else if (UseConcMarkSweepGC) {
    _gc = new ConcurrentMarkSweepGC();
#endif
  } else if (UseSerialGC) {
    _gc = new SerialGC();
  } else {
    ShouldNotReachHere();
  }
  return JNI_OK;
}