Function internal_inspect_all

system/lib/dlmalloc.c:5235–5272

/* Traversal */
#if MALLOC_INSPECT_ALL
static void internal_inspect_all(mstate m,
                                 void(*handler)(void *start,
                                                void *end,
                                                size_t used_bytes,
                                                void* callback_arg),
                                 void* arg) {
    if (is_initialized(m)) {
        mchunkptr top = m->top;
        msegmentptr s;
        for (s = &m->seg; s != 0; s = s->next) {
            mchunkptr q = align_as_chunk(s->base);
            while (segment_holds(s, q) && q->head != FENCEPOST_HEAD) {
                mchunkptr next = next_chunk(q);
                size_t sz = chunksize(q);
                size_t used;
                void* start;
                if (is_inuse(q)) {
                    used = sz - CHUNK_OVERHEAD; /* must not be mmapped */
                    start = chunk2mem(q);
                }
                else {
                    used = 0;
                    if (is_small(sz)) {     /* offset by possible bookkeeping */
                        start = (void*)((char*)q + sizeof(struct malloc_chunk));
                    }
                    else {
                        start = (void*)((char*)q + sizeof(struct malloc_tree_chunk));
                    }
                }
                if (start < (void*)next)  /* skip if all space is bookkeeping */
                    handler(start, next, used, arg);
                if (q == top)
                    break;
                q = next;
            }
        }
    }
}
#endif /* MALLOC_INSPECT_ALL */

/* ------------------ Exported realloc, memalign, etc -------------------- */