1 /*
2 * Copyright (C) 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 /* This is an implementation that uses the same arena access pattern found
18 * in the arena_stats_merge function from src/arena.c.
19 */
je_mallinfo()20 struct mallinfo je_mallinfo() {
21 struct mallinfo mi;
22 memset(&mi, 0, sizeof(mi));
23
24 malloc_mutex_lock(TSDN_NULL, &arenas_lock);
25 for (unsigned i = 0; i < narenas_auto; i++) {
26 if (arenas[i] != NULL) {
27 malloc_mutex_lock(TSDN_NULL, &arenas[i]->lock);
28 mi.hblkhd += arenas[i]->stats.mapped;
29 mi.uordblks += arenas[i]->stats.allocated_large;
30 mi.uordblks += arenas[i]->stats.allocated_huge;
31 malloc_mutex_unlock(TSDN_NULL, &arenas[i]->lock);
32
33 for (unsigned j = 0; j < NBINS; j++) {
34 arena_bin_t* bin = &arenas[i]->bins[j];
35
36 malloc_mutex_lock(TSDN_NULL, &bin->lock);
37 mi.uordblks += arena_bin_info[j].reg_size * bin->stats.curregs;
38 malloc_mutex_unlock(TSDN_NULL, &bin->lock);
39 }
40 }
41 }
42 malloc_mutex_unlock(TSDN_NULL, &arenas_lock);
43 mi.fordblks = mi.hblkhd - mi.uordblks;
44 mi.usmblks = mi.hblkhd;
45 return mi;
46 }
47
__mallinfo_narenas()48 size_t __mallinfo_narenas() {
49 return narenas_auto;
50 }
51
__mallinfo_nbins()52 size_t __mallinfo_nbins() {
53 return NBINS;
54 }
55
__mallinfo_arena_info(size_t aidx)56 struct mallinfo __mallinfo_arena_info(size_t aidx) {
57 struct mallinfo mi;
58 memset(&mi, 0, sizeof(mi));
59
60 malloc_mutex_lock(TSDN_NULL, &arenas_lock);
61 if (aidx < narenas_auto) {
62 if (arenas[aidx] != NULL) {
63 malloc_mutex_lock(TSDN_NULL, &arenas[aidx]->lock);
64 mi.hblkhd = arenas[aidx]->stats.mapped;
65 mi.ordblks = arenas[aidx]->stats.allocated_large;
66 mi.uordblks = arenas[aidx]->stats.allocated_huge;
67 malloc_mutex_unlock(TSDN_NULL, &arenas[aidx]->lock);
68
69 for (unsigned j = 0; j < NBINS; j++) {
70 arena_bin_t* bin = &arenas[aidx]->bins[j];
71
72 malloc_mutex_lock(TSDN_NULL, &bin->lock);
73 mi.fsmblks += arena_bin_info[j].reg_size * bin->stats.curregs;
74 malloc_mutex_unlock(TSDN_NULL, &bin->lock);
75 }
76 }
77 }
78 malloc_mutex_unlock(TSDN_NULL, &arenas_lock);
79 return mi;
80 }
81
__mallinfo_bin_info(size_t aidx,size_t bidx)82 struct mallinfo __mallinfo_bin_info(size_t aidx, size_t bidx) {
83 struct mallinfo mi;
84 memset(&mi, 0, sizeof(mi));
85
86 malloc_mutex_lock(TSDN_NULL, &arenas_lock);
87 if (aidx < narenas_auto && bidx < NBINS) {
88 if (arenas[aidx] != NULL) {
89 arena_bin_t* bin = &arenas[aidx]->bins[bidx];
90
91 malloc_mutex_lock(TSDN_NULL, &bin->lock);
92 mi.ordblks = arena_bin_info[bidx].reg_size * bin->stats.curregs;
93 mi.uordblks = bin->stats.nmalloc;
94 mi.fordblks = bin->stats.ndalloc;
95 malloc_mutex_unlock(TSDN_NULL, &bin->lock);
96 }
97 }
98 malloc_mutex_unlock(TSDN_NULL, &arenas_lock);
99 return mi;
100 }
101