| /* |
| * Copyright (c) 2015, 2018, Red Hat, Inc. All rights reserved. |
| * |
| * 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_SHENANDOAHHEAPREGION_INLINE_HPP |
| #define SHARE_GC_SHENANDOAH_SHENANDOAHHEAPREGION_INLINE_HPP |
| |
| #include "gc/shenandoah/shenandoahHeap.inline.hpp" |
| #include "gc/shenandoah/shenandoahHeapRegion.hpp" |
| #include "gc/shenandoah/shenandoahPacer.inline.hpp" |
| #include "runtime/atomic.hpp" |
| |
| HeapWord* ShenandoahHeapRegion::allocate(size_t size, ShenandoahAllocRequest::Type type) { |
| _heap->assert_heaplock_or_safepoint(); |
| |
| assert(is_object_aligned(size), "alloc size breaks alignment: " SIZE_FORMAT, size); |
| |
| HeapWord* obj = top(); |
| if (pointer_delta(end(), obj) >= size) { |
| make_regular_allocation(); |
| adjust_alloc_metadata(type, size); |
| |
| HeapWord* new_top = obj + size; |
| set_top(new_top); |
| |
| assert(is_object_aligned(new_top), "new top breaks alignment: " PTR_FORMAT, p2i(new_top)); |
| assert(is_object_aligned(obj), "obj is not aligned: " PTR_FORMAT, p2i(obj)); |
| |
| return obj; |
| } else { |
| return NULL; |
| } |
| } |
| |
| inline void ShenandoahHeapRegion::adjust_alloc_metadata(ShenandoahAllocRequest::Type type, size_t size) { |
| bool is_first_alloc = (top() == bottom()); |
| |
| switch (type) { |
| case ShenandoahAllocRequest::_alloc_shared: |
| case ShenandoahAllocRequest::_alloc_tlab: |
| _seqnum_last_alloc_mutator = _alloc_seq_num.value++; |
| if (is_first_alloc) { |
| assert (_seqnum_first_alloc_mutator == 0, "Region " SIZE_FORMAT " metadata is correct", _region_number); |
| _seqnum_first_alloc_mutator = _seqnum_last_alloc_mutator; |
| } |
| break; |
| case ShenandoahAllocRequest::_alloc_shared_gc: |
| case ShenandoahAllocRequest::_alloc_gclab: |
| _seqnum_last_alloc_gc = _alloc_seq_num.value++; |
| if (is_first_alloc) { |
| assert (_seqnum_first_alloc_gc == 0, "Region " SIZE_FORMAT " metadata is correct", _region_number); |
| _seqnum_first_alloc_gc = _seqnum_last_alloc_gc; |
| } |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| |
| switch (type) { |
| case ShenandoahAllocRequest::_alloc_shared: |
| case ShenandoahAllocRequest::_alloc_shared_gc: |
| _shared_allocs += size; |
| break; |
| case ShenandoahAllocRequest::_alloc_tlab: |
| _tlab_allocs += size; |
| break; |
| case ShenandoahAllocRequest::_alloc_gclab: |
| _gclab_allocs += size; |
| break; |
| default: |
| ShouldNotReachHere(); |
| } |
| } |
| |
| inline void ShenandoahHeapRegion::increase_live_data_alloc_words(size_t s) { |
| internal_increase_live_data(s); |
| } |
| |
| inline void ShenandoahHeapRegion::increase_live_data_gc_words(size_t s) { |
| internal_increase_live_data(s); |
| if (ShenandoahPacing) { |
| _heap->pacer()->report_mark(s); |
| } |
| } |
| |
| inline void ShenandoahHeapRegion::internal_increase_live_data(size_t s) { |
| size_t new_live_data = Atomic::add(s, &_live_data); |
| #ifdef ASSERT |
| size_t live_bytes = new_live_data * HeapWordSize; |
| size_t used_bytes = used(); |
| assert(live_bytes <= used_bytes, |
| "can't have more live data than used: " SIZE_FORMAT ", " SIZE_FORMAT, live_bytes, used_bytes); |
| #endif |
| } |
| |
| #endif // SHARE_GC_SHENANDOAH_SHENANDOAHHEAPREGION_INLINE_HPP |