blob: 80640da2fd42afd97ae2d3e9451860b3a22d8c8d [file] [log] [blame]
/*
* Copyright (c) 2019 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/sys/sys_heap.h>
#include <zephyr/sys/util.h>
#include <zephyr/kernel.h>
#include "heap.h"
/*
* Print heap info for debugging / analysis purpose
*/
static void heap_print_info(struct z_heap *h, bool dump_chunks)
{
int i, nb_buckets = bucket_idx(h, h->end_chunk) + 1;
size_t free_bytes, allocated_bytes, total, overhead;
printk("Heap at %p contains %d units in %d buckets\n\n",
chunk_buf(h), h->end_chunk, nb_buckets);
printk(" bucket# min units total largest largest\n"
" threshold chunks (units) (bytes)\n"
" -----------------------------------------------------------\n");
for (i = 0; i < nb_buckets; i++) {
chunkid_t first = h->buckets[i].next;
chunksz_t largest = 0;
int count = 0;
if (first) {
chunkid_t curr = first;
do {
count++;
largest = MAX(largest, chunk_size(h, curr));
curr = next_free_chunk(h, curr);
} while (curr != first);
}
if (count) {
printk("%9d %12d %12d %12d %12zd\n",
i, (1 << i) - 1 + min_chunk_size(h), count,
largest, chunksz_to_bytes(h, largest));
}
}
if (dump_chunks) {
printk("\nChunk dump:\n");
for (chunkid_t c = 0; ; c = right_chunk(h, c)) {
printk("chunk %4d: [%c] size=%-4d left=%-4d right=%d\n",
c,
chunk_used(h, c) ? '*'
: solo_free_header(h, c) ? '.'
: '-',
chunk_size(h, c),
left_chunk(h, c),
right_chunk(h, c));
if (c == h->end_chunk) {
break;
}
}
}
get_alloc_info(h, &allocated_bytes, &free_bytes);
/* The end marker chunk has a header. It is part of the overhead. */
total = h->end_chunk * CHUNK_UNIT + chunk_header_bytes(h);
overhead = total - free_bytes - allocated_bytes;
printk("\n%zd free bytes, %zd allocated bytes, overhead = %zd bytes (%zd.%zd%%)\n",
free_bytes, allocated_bytes, overhead,
(1000 * overhead + total/2) / total / 10,
(1000 * overhead + total/2) / total % 10);
}
void sys_heap_print_info(struct sys_heap *heap, bool dump_chunks)
{
heap_print_info(heap->heap, dump_chunks);
}