1/*
2 * Copyright (c) 2011, 2015, 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.
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23 */
24
25#ifndef SHARE_VM_GC_G1_G1ALLOCREGION_INLINE_HPP
26#define SHARE_VM_GC_G1_G1ALLOCREGION_INLINE_HPP
27
28#include "gc/g1/g1AllocRegion.hpp"
29#include "gc/g1/heapRegion.inline.hpp"
30
31#define assert_alloc_region(p, message)                                  \
32  do {                                                                   \
33    assert((p), "[%s] %s c: %u b: %s r: " PTR_FORMAT " u: " SIZE_FORMAT, \
34           _name, (message), _count, BOOL_TO_STR(_bot_updates),          \
35           p2i(_alloc_region), _used_bytes_before);                      \
36  } while (0)
37
38
39inline HeapWord* G1AllocRegion::allocate(HeapRegion* alloc_region,
40                                         size_t word_size,
41                                         bool bot_updates) {
42  assert(alloc_region != NULL, "pre-condition");
43
44  if (!bot_updates) {
45    return alloc_region->allocate_no_bot_updates(word_size);
46  } else {
47    return alloc_region->allocate(word_size);
48  }
49}
50
51inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region, size_t word_size, bool bot_updates) {
52  size_t temp;
53  return par_allocate(alloc_region, word_size, word_size, &temp, bot_updates);
54}
55
56inline HeapWord* G1AllocRegion::par_allocate(HeapRegion* alloc_region,
57                                             size_t min_word_size,
58                                             size_t desired_word_size,
59                                             size_t* actual_word_size,
60                                             bool bot_updates) {
61  assert(alloc_region != NULL, "pre-condition");
62  assert(!alloc_region->is_empty(), "pre-condition");
63
64  if (!bot_updates) {
65    return alloc_region->par_allocate_no_bot_updates(min_word_size, desired_word_size, actual_word_size);
66  } else {
67    return alloc_region->par_allocate(min_word_size, desired_word_size, actual_word_size);
68  }
69}
70
71inline HeapWord* G1AllocRegion::attempt_allocation(size_t word_size, bool bot_updates) {
72  size_t temp;
73  return attempt_allocation(word_size, word_size, &temp, bot_updates);
74}
75
76inline HeapWord* G1AllocRegion::attempt_allocation(size_t min_word_size,
77                                                   size_t desired_word_size,
78                                                   size_t* actual_word_size,
79                                                   bool bot_updates) {
80  assert_alloc_region(bot_updates == _bot_updates, "pre-condition");
81
82  HeapRegion* alloc_region = _alloc_region;
83  assert_alloc_region(alloc_region != NULL, "not initialized properly");
84
85  HeapWord* result = par_allocate(alloc_region, min_word_size, desired_word_size, actual_word_size, bot_updates);
86  if (result != NULL) {
87    trace("alloc", min_word_size, desired_word_size, *actual_word_size, result);
88    return result;
89  }
90  trace("alloc failed", min_word_size, desired_word_size);
91  return NULL;
92}
93
94inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t word_size, bool bot_updates) {
95  size_t temp;
96  return attempt_allocation_locked(word_size, word_size, &temp, bot_updates);
97}
98
99inline HeapWord* G1AllocRegion::attempt_allocation_locked(size_t min_word_size,
100                                                          size_t desired_word_size,
101                                                          size_t* actual_word_size,
102                                                          bool bot_updates) {
103  // First we have to redo the allocation, assuming we're holding the
104  // appropriate lock, in case another thread changed the region while
105  // we were waiting to get the lock.
106  HeapWord* result = attempt_allocation(min_word_size, desired_word_size, actual_word_size, bot_updates);
107  if (result != NULL) {
108    return result;
109  }
110
111  retire(true /* fill_up */);
112  result = new_alloc_region_and_allocate(desired_word_size, false /* force */);
113  if (result != NULL) {
114    *actual_word_size = desired_word_size;
115    trace("alloc locked (second attempt)", min_word_size, desired_word_size, *actual_word_size, result);
116    return result;
117  }
118  trace("alloc locked failed", min_word_size, desired_word_size);
119  return NULL;
120}
121
122inline HeapWord* G1AllocRegion::attempt_allocation_force(size_t word_size,
123                                                         bool bot_updates) {
124  assert_alloc_region(bot_updates == _bot_updates, "pre-condition");
125  assert_alloc_region(_alloc_region != NULL, "not initialized properly");
126
127  trace("forcing alloc", word_size, word_size);
128  HeapWord* result = new_alloc_region_and_allocate(word_size, true /* force */);
129  if (result != NULL) {
130    trace("alloc forced", word_size, word_size, word_size, result);
131    return result;
132  }
133  trace("alloc forced failed", word_size, word_size);
134  return NULL;
135}
136
137#endif // SHARE_VM_GC_G1_G1ALLOCREGION_INLINE_HPP
138