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 #include "jemalloc/internal/jemalloc_internal.h" 18 19 extern unsigned narenas_auto; 20 extern malloc_mutex_t arenas_lock; 21 extern arena_t **arenas; 22 23 // This is an implementation that uses the same arena access pattern found 24 // in the arena_stats_merge function from src/arena.c. 25 struct mallinfo je_mallinfo() { 26 struct mallinfo mi; 27 memset(&mi, 0, sizeof(mi)); 28 29 malloc_mutex_lock(&arenas_lock); 30 for (unsigned i = 0; i < narenas_auto; i++) { 31 if (arenas[i] != NULL) { 32 malloc_mutex_lock(&arenas[i]->lock); 33 mi.hblkhd += arenas[i]->stats.mapped; 34 mi.uordblks += arenas[i]->stats.allocated_large; 35 mi.uordblks += arenas[i]->stats.allocated_huge; 36 malloc_mutex_unlock(&arenas[i]->lock); 37 38 for (unsigned j = 0; j < NBINS; j++) { 39 arena_bin_t* bin = &arenas[i]->bins[j]; 40 41 malloc_mutex_lock(&bin->lock); 42 mi.uordblks += bin->stats.allocated; 43 malloc_mutex_unlock(&bin->lock); 44 } 45 } 46 } 47 malloc_mutex_unlock(&arenas_lock); 48 mi.fordblks = mi.hblkhd - mi.uordblks; 49 mi.usmblks = mi.hblkhd; 50 return mi; 51 } 52
