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