1 /*
   2  * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.
   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 "precompiled.hpp"
  26 #include "gc/shared/gc.hpp"
  27 #include "runtime/globals.hpp"
  28 #include "runtime/globals_extension.hpp"
  29 #include "runtime/java.hpp"
  30 
  31 GC* GC::gc() {
  32   assert(_gc != NULL, "GC not yet created");
  33   return _gc;
  34 }
  35 
  36 bool GC::is_initialized() {
  37   return _gc != NULL;
  38 }
  39 
  40 void GC::select_gc() {
  41   if (!gc_selected()) {
  42     select_gc_ergonomically();
  43     if (!gc_selected()) {
  44       vm_exit_during_initialization("Garbage collector not selected (default collector explicitly disabled)", NULL);
  45     }
  46   }
  47 }
  48 
  49 
  50 void GC::initialize_flags() {
  51   // Default does nothing.
  52 }