/*
 * Copyright 2016 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.
 */

#pragma once

#include "bt_common.h"

#include <hardware/bluetooth.h>

struct uid_set_t;
typedef struct uid_set_t uid_set_t;

/**
 * Creates a UID set to keep track of traffic per UID.
 * Caller is responsible for destroying this object via uid_set_destroy().
 */
uid_set_t* uid_set_create();

void uid_set_destroy(uid_set_t* set);

void uid_set_add_tx(uid_set_t* set, int32_t app_uid, uint64_t bytes);
void uid_set_add_rx(uid_set_t* set, int32_t app_uid, uint64_t bytes);

/**
 * Returns an array of bt_uid_traffic_t structs, where the end of the array
 * is signaled by an element with app_uid == -1.
 *
 * The caller is responsible for calling osi_free() on the returned array.
 */
bt_uid_traffic_t* uid_set_read_and_clear(uid_set_t* set);