esp-idf/tools/unit-test-app/components/test_utils/include/ccomp_timer.h

63 lines
1.9 KiB
C

// Copyright 2019 Espressif Systems (Shanghai) PTE LTD
//
// 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 <stdint.h>
#include "esp_err.h"
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Start the timer on the current core.
*
* @return
* - ESP_OK: Success
* - ESP_ERR_INVALID_STATE: The timer has already been started previously.
* - Others: Fail
*/
esp_err_t ccomp_timer_start(void);
/**
* @brief Stop the timer on the current core.
*
* @note Returns -1 if an error has occured and stopping the timer failed.
*
* @return The time elapsed from the last ccomp_timer_start call on the current
* core.
*/
int64_t ccomp_timer_stop(void);
/**
* Return the current timer value on the current core without stopping the timer.
*
* @note Returns -1 if an error has occured and stopping the timer failed.
*
* @note If called while timer is active i.e. between ccomp_timer_start and ccomp_timer_stop,
* this function returns the elapsed time from ccomp_timer_start. Once ccomp_timer_stop
* has been called, the timer becomes inactive and stops keeping time. As a result, if this function gets
* called after esp_cccomp_timer_stop, this function will return the same value as when the timer was stopped.
*
* @return The elapsed time from the last ccomp_timer_start call on the current
* core.
*/
int64_t ccomp_timer_get_time(void);
#ifdef __cplusplus
}
#endif