1 /* 2 * Copyright (c) 2018, Red Hat, Inc. and/or its affiliates. 3 * 4 * This code is free software; you can redistribute it and/or modify it 5 * under the terms of the GNU General Public License version 2 only, as 6 * published by the Free Software Foundation. 7 * 8 * This code is distributed in the hope that it will be useful, but WITHOUT 9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 11 * version 2 for more details (a copy is included in the LICENSE file that 12 * accompanied this code). 13 * 14 * You should have received a copy of the GNU General Public License version 15 * 2 along with this work; if not, write to the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 17 * 18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 19 * or visit www.oracle.com if you need additional information or have any 20 * questions. 21 * 22 */ 23 24 #ifndef SHARE_VM_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP 25 #define SHARE_VM_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP 26 27 #include "gc_implementation/shenandoah/shenandoahMarkingContext.hpp" 28 #include "gc_implementation/shenandoah/shenandoahHeapRegion.hpp" 29 30 inline MarkBitMap* ShenandoahMarkingContext::mark_bit_map() { 31 return &_mark_bit_map; 32 } 33 34 inline bool ShenandoahMarkingContext::mark(oop obj) { 35 shenandoah_assert_not_forwarded(NULL, obj); 36 HeapWord* addr = (HeapWord*) obj; 37 return (! allocated_after_mark_start(addr)) && _mark_bit_map.parMark(addr); 38 } 39 40 inline bool ShenandoahMarkingContext::is_marked(oop obj) const { 41 HeapWord* addr = (HeapWord*) obj; 42 return allocated_after_mark_start(addr) || _mark_bit_map.isMarked(addr); 43 } 44 45 inline bool ShenandoahMarkingContext::allocated_after_mark_start(HeapWord* addr) const { 46 uintx index = ((uintx) addr) >> ShenandoahHeapRegion::region_size_bytes_shift(); 47 HeapWord* top_at_mark_start = _top_at_mark_starts[index]; 48 bool alloc_after_mark_start = addr >= top_at_mark_start; 49 return alloc_after_mark_start; 50 } 51 52 #endif // SHARE_VM_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP