printload.h
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/****************************************************************************
*
* Copyright (c) 2015 PX4 Development Team. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name PX4 nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/**
* @file printload.h
*
* Print the current system load.
*
* @author Lorenz Meier <lorenz@px4.io>
*/
#pragma once
#include <px4_platform_common/px4_config.h>
#include <stdint.h>
#ifndef CONFIG_MAX_TASKS
#define CONFIG_MAX_TASKS 64
#endif
struct print_load_s {
uint64_t total_user_time{0};
int running_count{0};
int blocked_count{0};
uint64_t new_time{0};
uint64_t interval_start_time{0};
uint64_t last_times[CONFIG_MAX_TASKS] {};
float interval_time_us{0.f};
};
__BEGIN_DECLS
__EXPORT void init_print_load(struct print_load_s *s);
__EXPORT void print_load(int fd, struct print_load_s *print_state);
typedef void (*print_load_callback_f)(void *user);
/**
* Print load to a buffer, and call cb after each written line (buffer will not include '\n')
*/
void print_load_buffer(char *buffer, int buffer_length, print_load_callback_f cb, void *user,
struct print_load_s *print_state);
__END_DECLS