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