Function prof_log_bt_index

deps/jemalloc/src/prof.c:364–405

}

static size_t
prof_log_bt_index(tsd_t *tsd, prof_bt_t *bt) {
	assert(prof_logging_state == prof_logging_state_started);
	malloc_mutex_assert_owner(tsd_tsdn(tsd), &log_mtx);

	prof_bt_node_t dummy_node;
	dummy_node.bt = *bt;
	prof_bt_node_t *node;

	/* See if this backtrace is already cached in the table. */
	if (ckh_search(&log_bt_node_set, (void *)(&dummy_node),
	    (void **)(&node), NULL)) {
		size_t sz = offsetof(prof_bt_node_t, vec) +
			        (bt->len * sizeof(void *));
		prof_bt_node_t *new_node = (prof_bt_node_t *)
		    iallocztm(tsd_tsdn(tsd), sz, sz_size2index(sz), false, NULL,
		    true, arena_get(TSDN_NULL, 0, true), true);
		if (log_bt_first == NULL) {
			log_bt_first = new_node;
			log_bt_last = new_node;
		} else {
			log_bt_last->next = new_node;
			log_bt_last = new_node;
		}

		new_node->next = NULL;
		new_node->index = log_bt_index;
		/*
		 * Copy the backtrace: bt is inside a tdata or gctx, which
		 * might die before prof_log_stop is called.
		 */
		new_node->bt.len = bt->len;
		memcpy(new_node->vec, bt->vec, bt->len * sizeof(void *));
		new_node->bt.vec = new_node->vec;

		log_bt_index++;
		ckh_insert(tsd, &log_bt_node_set, (void *)new_node, NULL);
		return new_node->index;
	} else {
		return node->index;
	}
}
static size_t
prof_log_thr_index(tsd_t *tsd, uint64_t thr_uid, const char *name) {
	assert(prof_logging_state == prof_logging_state_started);