1 /* 2 * Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #include "gc/shared/gc.hpp" 26 #include "gc/serial/serialGC.hpp" 27 #include "runtime/globals.hpp" 28 #include "utilities/globalDefinitions.hpp" 29 #include "utilities/macros.hpp" 30 31 #if INCLUDE_ALL_GCS 32 #include "gc/parallel/parallelGC.hpp" 33 #include "gc/cms/concurrentMarkSweepGC.hpp" 34 #include "gc/g1/g1GC.hpp" 35 #endif 36 37 GC* GC::_gc = NULL; 38 39 jint GC::initialize() { 40 assert(_gc == NULL, "GC already created"); 41 #if !INCLUDE_ALL_GCS 42 if (UseParallelGC) { 43 fatal("UseParallelGC not supported in this VM."); 44 } else if (UseG1GC) { 45 fatal("UseG1GC not supported in this VM."); 46 } else if (UseConcMarkSweepGC) { 47 fatal("UseConcMarkSweepGC not supported in this VM."); 48 #else 49 if (UseParallelGC) { 50 _gc = new ParallelGC(); 51 } else if (UseG1GC) { 52 _gc = new G1GC(); 53 } else if (UseConcMarkSweepGC) { 54 _gc = new ConcurrentMarkSweepGC(); 55 #endif 56 } else if (UseSerialGC) { 57 _gc = new SerialGC(); 58 } else { 59 ShouldNotReachHere(); 60 } 61 return JNI_OK; 62 } 63