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 */ 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 48 size_t __mallinfo_narenas() { 49 return narenas_auto; 50 } 51 52 size_t __mallinfo_nbins() { 53 return NBINS; 54 } 55 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 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
