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 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
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