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/*
* Copyright (C) 2014 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/* This is an implementation that uses the same arena access pattern found
* in the arena_stats_merge function from src/arena.c.
*/
struct mallinfo je_mallinfo() {
struct mallinfo mi;
memset(&mi, 0, sizeof(mi));
malloc_mutex_lock(&arenas_lock);
for (unsigned i = 0; i < narenas_auto; i++) {
if (arenas[i] != NULL) {
malloc_mutex_lock(&arenas[i]->lock);
mi.hblkhd += arenas[i]->stats.mapped;
mi.uordblks += arenas[i]->stats.allocated_large;
mi.uordblks += arenas[i]->stats.allocated_huge;
malloc_mutex_unlock(&arenas[i]->lock);
for (unsigned j = 0; j < NBINS; j++) {
arena_bin_t* bin = &arenas[i]->bins[j];
malloc_mutex_lock(&bin->lock);
mi.uordblks += arena_bin_info[j].reg_size * bin->stats.curregs;
malloc_mutex_unlock(&bin->lock);
}
}
}
malloc_mutex_unlock(&arenas_lock);
mi.fordblks = mi.hblkhd - mi.uordblks;
mi.usmblks = mi.hblkhd;
return mi;
}
size_t __mallinfo_narenas() {
return narenas_auto;
}
size_t __mallinfo_nbins() {
return NBINS;
}
struct mallinfo __mallinfo_arena_info(size_t aidx) {
struct mallinfo mi;
memset(&mi, 0, sizeof(mi));
malloc_mutex_lock(&arenas_lock);
if (aidx < narenas_auto) {
if (arenas[aidx] != NULL) {
malloc_mutex_lock(&arenas[aidx]->lock);
mi.hblkhd = arenas[aidx]->stats.mapped;
mi.ordblks = arenas[aidx]->stats.allocated_large;
mi.uordblks = arenas[aidx]->stats.allocated_huge;
malloc_mutex_unlock(&arenas[aidx]->lock);
for (unsigned j = 0; j < NBINS; j++) {
arena_bin_t* bin = &arenas[aidx]->bins[j];
malloc_mutex_lock(&bin->lock);
mi.fsmblks += arena_bin_info[j].reg_size * bin->stats.curregs;
malloc_mutex_unlock(&bin->lock);
}
}
}
malloc_mutex_unlock(&arenas_lock);
return mi;
}
struct mallinfo __mallinfo_bin_info(size_t aidx, size_t bidx) {
struct mallinfo mi;
memset(&mi, 0, sizeof(mi));
malloc_mutex_lock(&arenas_lock);
if (aidx < narenas_auto && bidx < NBINS) {
if (arenas[aidx] != NULL) {
arena_bin_t* bin = &arenas[aidx]->bins[bidx];
malloc_mutex_lock(&bin->lock);
mi.ordblks = arena_bin_info[bidx].reg_size * bin->stats.curregs;
mi.uordblks = bin->stats.nmalloc;
mi.fordblks = bin->stats.ndalloc;
malloc_mutex_unlock(&bin->lock);
}
}
malloc_mutex_unlock(&arenas_lock);
return mi;
}
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