1 /* 2 * Copyright (c) 2015, 2019, 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_GC_G1_G1ALLOCATOR_INLINE_HPP 26 #define SHARE_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 #include "memory/universe.hpp" 32 33 inline uint G1Allocator::current_node_index() const { 34 return _mnm->index_of_current_thread(); 35 } 36 37 inline MutatorAllocRegion* G1Allocator::mutator_alloc_region(uint node_index) { 38 assert(node_index < _num_alloc_regions, "Invalid index: %u", node_index); 39 return &_mutator_alloc_regions[node_index]; 40 } 41 42 inline SurvivorGCAllocRegion* G1Allocator::survivor_gc_alloc_region() { 43 return &_survivor_gc_alloc_region; 44 } 45 46 inline OldGCAllocRegion* G1Allocator::old_gc_alloc_region() { 47 return &_old_gc_alloc_region; 48 } 49 50 inline HeapWord* G1Allocator::attempt_allocation(size_t min_word_size, 51 size_t desired_word_size, 52 size_t* actual_word_size) { 53 uint node_index = current_node_index(); 54 HeapWord* result = mutator_alloc_region(node_index)->attempt_retained_allocation(min_word_size, desired_word_size, actual_word_size); 55 if (result != NULL) { 56 return result; 57 } 58 return mutator_alloc_region(node_index)->attempt_allocation(min_word_size, desired_word_size, actual_word_size); 59 } 60 61 inline HeapWord* G1Allocator::attempt_allocation_locked(size_t word_size) { 62 uint node_index = current_node_index(); 63 HeapWord* result = mutator_alloc_region(node_index)->attempt_allocation_locked(word_size); 64 assert(result != NULL || mutator_alloc_region(node_index)->get() == NULL, 65 "Must not have a mutator alloc region if there is no memory, but is " PTR_FORMAT, p2i(mutator_alloc_region(node_index)->get())); 66 return result; 67 } 68 69 inline HeapWord* G1Allocator::attempt_allocation_force(size_t word_size) { 70 uint node_index = current_node_index(); 71 return mutator_alloc_region(node_index)->attempt_allocation_force(word_size); 72 } 73 74 inline PLAB* G1PLABAllocator::alloc_buffer(G1HeapRegionAttr dest) { 75 assert(dest.is_valid(), 76 "Allocation buffer index out of bounds: %s", dest.get_type_str()); 77 assert(_alloc_buffers[dest.type()] != NULL, 78 "Allocation buffer is NULL: %s", dest.get_type_str()); 79 return _alloc_buffers[dest.type()]; 80 } 81 82 inline HeapWord* G1PLABAllocator::plab_allocate(G1HeapRegionAttr dest, 83 size_t word_sz) { 84 PLAB* buffer = alloc_buffer(dest); 85 if (_survivor_alignment_bytes == 0 || !dest.is_young()) { 86 return buffer->allocate(word_sz); 87 } else { 88 return buffer->allocate_aligned(word_sz, _survivor_alignment_bytes); 89 } 90 } 91 92 inline HeapWord* G1PLABAllocator::allocate(G1HeapRegionAttr dest, 93 size_t word_sz, 94 bool* refill_failed) { 95 HeapWord* const obj = plab_allocate(dest, word_sz); 96 if (obj != NULL) { 97 return obj; 98 } 99 return allocate_direct_or_new_plab(dest, word_sz, refill_failed); 100 } 101 102 // Create the maps which is used to identify archive objects. 103 inline void G1ArchiveAllocator::enable_archive_object_check() { 104 if (_archive_check_enabled) { 105 return; 106 } 107 108 _archive_check_enabled = true; 109 size_t length = G1CollectedHeap::heap()->max_reserved_capacity(); 110 _closed_archive_region_map.initialize(G1CollectedHeap::heap()->base(), 111 G1CollectedHeap::heap()->base() + length, 112 HeapRegion::GrainBytes); 113 _open_archive_region_map.initialize(G1CollectedHeap::heap()->base(), 114 G1CollectedHeap::heap()->base() + length, 115 HeapRegion::GrainBytes); 116 } 117 118 // Set the regions containing the specified address range as archive. 119 inline void G1ArchiveAllocator::set_range_archive(MemRegion range, bool open) { 120 assert(_archive_check_enabled, "archive range check not enabled"); 121 log_info(gc, cds)("Mark %s archive regions in map: [" PTR_FORMAT ", " PTR_FORMAT "]", 122 open ? "open" : "closed", 123 p2i(range.start()), 124 p2i(range.last())); 125 if (open) { 126 _open_archive_region_map.set_by_address(range, true); 127 } else { 128 _closed_archive_region_map.set_by_address(range, true); 129 } 130 } 131 132 // Clear the archive regions map containing the specified address range. 133 inline void G1ArchiveAllocator::clear_range_archive(MemRegion range, bool open) { 134 assert(_archive_check_enabled, "archive range check not enabled"); 135 log_info(gc, cds)("Clear %s archive regions in map: [" PTR_FORMAT ", " PTR_FORMAT "]", 136 open ? "open" : "closed", 137 p2i(range.start()), 138 p2i(range.last())); 139 if (open) { 140 _open_archive_region_map.set_by_address(range, false); 141 } else { 142 _closed_archive_region_map.set_by_address(range, false); 143 } 144 } 145 146 // Check if an object is in a closed archive region using the _archive_region_map. 147 inline bool G1ArchiveAllocator::in_closed_archive_range(oop object) { 148 // This is the out-of-line part of is_closed_archive_object test, done separately 149 // to avoid additional performance impact when the check is not enabled. 150 return _closed_archive_region_map.get_by_address((HeapWord*)object); 151 } 152 153 inline bool G1ArchiveAllocator::in_open_archive_range(oop object) { 154 return _open_archive_region_map.get_by_address((HeapWord*)object); 155 } 156 157 // Check if archive object checking is enabled, to avoid calling in_open/closed_archive_range 158 // unnecessarily. 159 inline bool G1ArchiveAllocator::archive_check_enabled() { 160 return _archive_check_enabled; 161 } 162 163 inline bool G1ArchiveAllocator::is_closed_archive_object(oop object) { 164 return (archive_check_enabled() && in_closed_archive_range(object)); 165 } 166 167 inline bool G1ArchiveAllocator::is_open_archive_object(oop object) { 168 return (archive_check_enabled() && in_open_archive_range(object)); 169 } 170 171 inline bool G1ArchiveAllocator::is_archived_object(oop object) { 172 return (archive_check_enabled() && (in_closed_archive_range(object) || 173 in_open_archive_range(object))); 174 } 175 176 #endif // SHARE_GC_G1_G1ALLOCATOR_INLINE_HPP