rev 49945 : imported patch 8191471-g1-varying-tlab-allocation
rev 49946 : imported patch 8191471-g1-retained-mutator-region

   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 word_size) {
  45   return mutator_alloc_region()->attempt_allocation(word_size);






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