/* * Copyright (c) 2018, 2019, Red Hat, Inc. 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. * */ #ifndef SHARE_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP #define SHARE_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP #include "gc/shenandoah/shenandoahMarkingContext.hpp" inline MarkBitMap* ShenandoahMarkingContext::mark_bit_map() { return &_mark_bit_map; } inline bool ShenandoahMarkingContext::mark(oop obj) { shenandoah_assert_not_forwarded(NULL, obj); return (! allocated_after_mark_start(obj)) && _mark_bit_map.par_mark(obj); } inline bool ShenandoahMarkingContext::is_marked(oop obj) const { return allocated_after_mark_start(obj) || _mark_bit_map.is_marked(obj); } inline bool ShenandoahMarkingContext::allocated_after_mark_start(oop obj) const { HeapWord* addr = cast_from_oop(obj); return allocated_after_mark_start(addr); } inline bool ShenandoahMarkingContext::allocated_after_mark_start(HeapWord* addr) const { uintx index = ((uintx) addr) >> ShenandoahHeapRegion::region_size_bytes_shift(); HeapWord* top_at_mark_start = _top_at_mark_starts[index]; bool alloc_after_mark_start = addr >= top_at_mark_start; return alloc_after_mark_start; } inline void ShenandoahMarkingContext::capture_top_at_mark_start(ShenandoahHeapRegion *r) { size_t idx = r->index(); HeapWord* old_tams = _top_at_mark_starts_base[idx]; HeapWord* new_tams = r->top(); assert(new_tams >= old_tams, "Region " SIZE_FORMAT", TAMS updates should be monotonic: " PTR_FORMAT " -> " PTR_FORMAT, idx, p2i(old_tams), p2i(new_tams)); assert(is_bitmap_clear_range(old_tams, new_tams), "Region " SIZE_FORMAT ", bitmap should be clear while adjusting TAMS: " PTR_FORMAT " -> " PTR_FORMAT, idx, p2i(old_tams), p2i(new_tams)); _top_at_mark_starts_base[idx] = new_tams; _top_bitmaps[idx] = new_tams; } inline void ShenandoahMarkingContext::reset_top_at_mark_start(ShenandoahHeapRegion* r) { _top_at_mark_starts_base[r->index()] = r->bottom(); } inline HeapWord* ShenandoahMarkingContext::top_at_mark_start(ShenandoahHeapRegion* r) const { return _top_at_mark_starts_base[r->index()]; } inline void ShenandoahMarkingContext::reset_top_bitmap(ShenandoahHeapRegion* r) { assert(is_bitmap_clear_range(r->bottom(), r->end()), "Region " SIZE_FORMAT " should have no marks in bitmap", r->index()); _top_bitmaps[r->index()] = r->bottom(); } #endif // SHARE_GC_SHENANDOAH_SHENANDOAHMARKINGCONTEXT_INLINE_HPP