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