1 /* 2 * Copyright (c) 2015, 2018, 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 #ifndef SHARE_VM_GC_G1_G1ALLOCATOR_INLINE_HPP 26 #define SHARE_VM_GC_G1_G1ALLOCATOR_INLINE_HPP 27 28 #include "gc/g1/g1Allocator.hpp" 29 #include "gc/g1/g1AllocRegion.inline.hpp" 30 #include "gc/shared/plab.inline.hpp" 31 32 inline MutatorAllocRegion* G1Allocator::mutator_alloc_region() { 33 return &_mutator_alloc_region; 34 } 35 36 inline SurvivorGCAllocRegion* G1Allocator::survivor_gc_alloc_region() { 37 return &_survivor_gc_alloc_region; 38 } 39 40 inline OldGCAllocRegion* G1Allocator::old_gc_alloc_region() { 41 return &_old_gc_alloc_region; 42 } 43 44 inline HeapWord* G1Allocator::attempt_allocation(size_t min_word_size, 45 size_t desired_word_size, 46 size_t* actual_word_size) { 47 HeapWord* result = mutator_alloc_region()->attempt_retained_allocation(min_word_size, desired_word_size, actual_word_size); 48 if (result != NULL) { 49 return result; 50 } 51 return mutator_alloc_region()->attempt_allocation(min_word_size, desired_word_size, actual_word_size); 52 } 53 54 inline HeapWord* G1Allocator::attempt_allocation_locked(size_t word_size) { 55 HeapWord* result = mutator_alloc_region()->attempt_allocation_locked(word_size); 56 assert(result != NULL || mutator_alloc_region()->get() == NULL, 57 "Must not have a mutator alloc region if there is no memory, but is " PTR_FORMAT, p2i(mutator_alloc_region()->get())); 58 return result; 59 } 60 61 inline HeapWord* G1Allocator::attempt_allocation_force(size_t word_size) { 62 return mutator_alloc_region()->attempt_allocation_force(word_size); 63 } 64 65 inline PLAB* G1PLABAllocator::alloc_buffer(InCSetState dest) { 66 assert(dest.is_valid(), 67 "Allocation buffer index out of bounds: " CSETSTATE_FORMAT, dest.value()); 68 assert(_alloc_buffers[dest.value()] != NULL, 69 "Allocation buffer is NULL: " CSETSTATE_FORMAT, dest.value()); 70 return _alloc_buffers[dest.value()]; 71 } 72 73 inline HeapWord* G1PLABAllocator::plab_allocate(InCSetState dest, 74 size_t word_sz) { 75 PLAB* buffer = alloc_buffer(dest); 76 if (_survivor_alignment_bytes == 0 || !dest.is_young()) { 77 return buffer->allocate(word_sz); 78 } else { 79 return buffer->allocate_aligned(word_sz, _survivor_alignment_bytes); 80 } 81 } 82 83 inline HeapWord* G1PLABAllocator::allocate(InCSetState dest, 84 size_t word_sz, 85 bool* refill_failed) { 86 HeapWord* const obj = plab_allocate(dest, word_sz); 87 if (obj != NULL) { 88 return obj; 89 } 90 return allocate_direct_or_new_plab(dest, word_sz, refill_failed); 91 } 92 93 // Create the maps which is used to identify archive objects. 94 inline void G1ArchiveAllocator::enable_archive_object_check() { 95 if (_archive_check_enabled) { 96 return; 97 } 98 99 _archive_check_enabled = true; 100 size_t length = Universe::heap()->max_capacity(); 101 _closed_archive_region_map.initialize((HeapWord*)Universe::heap()->base(), 102 (HeapWord*)Universe::heap()->base() + length, 103 HeapRegion::GrainBytes); 104 _open_archive_region_map.initialize((HeapWord*)Universe::heap()->base(), 105 (HeapWord*)Universe::heap()->base() + length, 106 HeapRegion::GrainBytes); 107 } 108 109 // Set the regions containing the specified address range as archive. 110 inline void G1ArchiveAllocator::set_range_archive(MemRegion range, bool open) { 111 assert(_archive_check_enabled, "archive range check not enabled"); 112 if (open) { 113 _open_archive_region_map.set_by_address(range, true); 114 } else { 115 _closed_archive_region_map.set_by_address(range, true); 116 } 117 } 118 119 // Check if an object is in a closed archive region using the _archive_region_map. 120 inline bool G1ArchiveAllocator::in_closed_archive_range(oop object) { 121 // This is the out-of-line part of is_closed_archive_object test, done separately 122 // to avoid additional performance impact when the check is not enabled. 123 return _closed_archive_region_map.get_by_address((HeapWord*)object); 124 } 125 126 inline bool G1ArchiveAllocator::in_open_archive_range(oop object) { 127 return _open_archive_region_map.get_by_address((HeapWord*)object); 128 } 129 130 // Check if archive object checking is enabled, to avoid calling in_open/closed_archive_range 131 // unnecessarily. 132 inline bool G1ArchiveAllocator::archive_check_enabled() { 133 return _archive_check_enabled; 134 } 135 136 inline bool G1ArchiveAllocator::is_closed_archive_object(oop object) { 137 return (archive_check_enabled() && in_closed_archive_range(object)); 138 } 139 140 inline bool G1ArchiveAllocator::is_open_archive_object(oop object) { 141 return (archive_check_enabled() && in_open_archive_range(object)); 142 } 143 144 inline bool G1ArchiveAllocator::is_archive_object(oop object) { 145 return (archive_check_enabled() && (in_closed_archive_range(object) || 146 in_open_archive_range(object))); 147 } 148 149 #endif // SHARE_VM_GC_G1_G1ALLOCATOR_HPP