1 /* 2 * Copyright (c) 2014, 2015, 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 "precompiled.hpp" 26 #include "gc/shared/gcId.hpp" 27 #include "runtime/safepoint.hpp" 28 #include "runtime/thread.inline.hpp" 29 30 uint GCId::_next_id = 0; 31 32 const uint GCId::create() { 33 return _next_id++; 34 } 35 36 const uint GCId::current() { 37 assert(Thread::current()->gc_id() != undefined(), "Using undefined GC id."); 38 return current_raw(); 39 } 40 41 const uint GCId::current_raw() { 42 return Thread::current()->gc_id(); 43 } 44 45 GCIdMark::GCIdMark() : _gc_id(GCId::create()) { 46 Thread::current()->set_gc_id(_gc_id); 47 } 48 49 GCIdMark::GCIdMark(uint gc_id) : _gc_id(gc_id) { 50 Thread::current()->set_gc_id(_gc_id); 51 } 52 53 GCIdMark::~GCIdMark() { 54 Thread::current()->set_gc_id(GCId::undefined()); 55 } 56