perf_counter.cpp File Reference

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sys/queue.h>
#include <drivers/drv_hrt.h>
#include <math.h>
#include <pthread.h>
#include <systemlib/err.h>
#include "perf_counter.h"

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Classes
struct	perf_ctr_header
	Header common to all counters. More...
struct	perf_ctr_count
	PC_EVENT counter. More...
struct	perf_ctr_elapsed
	PC_ELAPSED counter. More...
struct	perf_ctr_interval
	PC_INTERVAL counter. More...

Functions
perf_counter_t	perf_alloc (enum perf_counter_type type, const char *name)
	Create a new local counter. More...
perf_counter_t	perf_alloc_once (enum perf_counter_type type, const char *name)
	Get the reference to an existing counter or create a new one if it does not exist. More...
void	perf_free (perf_counter_t handle)
	Free a counter. More...
void	perf_count (perf_counter_t handle)
	Count a performance event. More...
void	perf_begin (perf_counter_t handle)
	Begin a performance event. More...
void	perf_end (perf_counter_t handle)
	End a performance event. More...
void	perf_set_elapsed (perf_counter_t handle, int64_t elapsed)
	Register a measurement. More...
void	perf_set_count (perf_counter_t handle, uint64_t count)
	Set a counter. More...
void	perf_cancel (perf_counter_t handle)
	Cancel a performance event. More...
void	perf_reset (perf_counter_t handle)
	Reset a performance counter. More...
void	perf_print_counter (perf_counter_t handle)
	Print one performance counter to stdout. More...
void	perf_print_counter_fd (int fd, perf_counter_t handle)
	Print one performance counter to a fd. More...
int	perf_print_counter_buffer (char *buffer, int length, perf_counter_t handle)
	Print one performance counter to a buffer. More...
uint64_t	perf_event_count (perf_counter_t handle)
	Return current event_count. More...
void	perf_iterate_all (perf_callback cb, void *user)
	Iterate over all performance counters using a callback. More...
void	perf_print_all (int fd)
	Print all of the performance counters. More...
void	perf_print_latency (int fd)
	Print hrt latency counters. More...
void	perf_reset_all (void)
	Reset all of the performance counters. More...

Variables
const uint16_t	latency_bucket_count = LATENCY_BUCKET_COUNT
const uint16_t	latency_buckets [LATENCY_BUCKET_COUNT] = { 1, 2, 5, 10, 20, 50, 100, 1000 }
__EXPORT uint32_t	latency_counters [LATENCY_BUCKET_COUNT+1]
static sq_queue_t	perf_counters = { nullptr, nullptr }
	List of all known counters. More...
pthread_mutex_t	perf_counters_mutex = PTHREAD_MUTEX_INITIALIZER
	mutex protecting access to the perf_counters linked list (which is read from & written to by different threads) More...

Function Documentation

perf_alloc()

perf_counter_t perf_alloc	(	enum perf_counter_type	type,
		const char *	name
	)

Create a new local counter.

Parameters

type	The type of the new counter.
name	The counter name.

Returns

Handle for the new counter, or NULL if a counter could not be allocated.

Definition at line 123 of file perf_counter.cpp.

References perf_ctr_header::link, perf_ctr_header::name, PC_COUNT, PC_ELAPSED, PC_INTERVAL, perf_counters, perf_counters_mutex, and perf_ctr_header::type.

Referenced by perf_alloc_once().

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perf_alloc_once()

perf_counter_t perf_alloc_once	(	enum perf_counter_type	type,
		const char *	name
	)

Get the reference to an existing counter or create a new one if it does not exist.

Parameters

type	The type of the counter.
name	The counter name.

Returns

Handle for the counter, or NULL if a counter could not be allocated.

Definition at line 156 of file perf_counter.cpp.

References perf_ctr_header::link, perf_ctr_header::name, perf_alloc(), perf_counters, perf_counters_mutex, and perf_ctr_header::type.

Referenced by AirspeedModule::AirspeedModule().

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perf_begin()

void perf_begin

(

perf_counter_t

handle

)

Begin a performance event.

This call applies to counters that operate over ranges of time; PC_ELAPSED etc.

Parameters

handle

The handle returned from perf_alloc.

Definition at line 258 of file perf_counter.cpp.

References hrt_absolute_time(), PC_ELAPSED, and perf_ctr_header::type.

Referenced by DfMS5607Wrapper::_publish(), DfMS5611Wrapper::_publish(), DfBmp280Wrapper::_publish(), DfAK8963Wrapper::_publish(), DfHmc5883Wrapper::_publish(), DfMPU6050Wrapper::_publish(), DfLsm9ds1Wrapper::_publish(), DfMpu9250Wrapper::_publish(), load_mon::LoadMon::_ram_used(), adc_measure(), at24c_bread(), at24c_bwrite(), at24c_initialize(), BMP280::collect(), MS5525::collect(), TFMINI::collect(), ETSAirspeed::collect(), SDP3X::collect(), MEASAirspeed::collect(), SRF02::collect(), TERARANGER::collect(), CM8JL65::collect(), VL53LXX::collect(), LidarLiteI2C::collect(), Radar::collect(), MB12XX::collect(), MPL3115A2::collect(), SF1XX::collect(), LeddarOne::collect(), PX4FLOW::collect(), SF0X::collect(), LSM303AGR::collect(), MS5611::collect(), LPS22HB::collect(), RM3100::collect(), MappyDot::collect(), LIS3MDL::collect(), INA226::collect(), LPS25H::collect(), QMC5883::collect(), HMC5883::collect(), BMM150::collect(), IST8310::collect(), BMP388::collect(), controls_tick(), RCInput::cycle(), dm_read(), dm_write(), dsm_port_input(), px4::logger::LogWriterFile::LogFileBuffer::fsync(), BMP280::measure(), LidarLitePWM::measure(), ADIS16477::measure(), FXAS21002C::measure(), MPL3115A2::measure(), ADIS16448::measure(), ADIS16497::measure(), VOXLPM::measure(), MS5611::measure(), BMA180::measure(), BMI055_gyro::measure(), BMI055_accel::measure(), BMI088_gyro::measure(), BMI088_accel::measure(), L3GD20::measure(), BMM150::measure(), MPU9250::measure(), BMI160::measure(), BMP388::measure(), MPU6000::measure(), ICM20948::measure(), LSM303D::measureAccelerometer(), LSM303D::measureMagnetometer(), param_export(), param_find_internal(), param_get(), param_save_default(), param_set_internal(), Sih::run(), MulticopterRateControl::Run(), MulticopterAttitudeControl::Run(), RCUpdate::RCUpdate::Run(), AirspeedModule::Run(), FixedwingAttitudeControl::Run(), MulticopterPositionControl::Run(), RoverPositionControl::run(), VtolAttitudeControl::Run(), Sensors::run(), PAW3902::Run(), Ekf2::Run(), Navigator::run(), BatteryStatus::Run(), DShotOutput::Run(), FXOS8701CQ::Run(), PX4FMU::Run(), PMW3901::Run(), FixedwingPositionControl::Run(), UavcanNode::Run(), land_detector::LandDetector::Run(), rx_dma_callback(), ADC::sample(), PX4IO::task_main(), Mavlink::task_main(), test_perf(), user_start(), PX4IO::write(), and px4::logger::LogWriterFile::LogFileBuffer::write_to_file().

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perf_cancel()

void perf_cancel

(

perf_counter_t

handle

)

Cancel a performance event.

This call applies to counters that operate over ranges of time; PC_ELAPSED etc. It reverts the effect of a previous perf_begin.

Parameters

handle

The handle returned from perf_alloc.

Definition at line 380 of file perf_counter.cpp.

References PC_ELAPSED, perf_ctr_elapsed::time_start, and perf_ctr_header::type.

Referenced by BMP280::collect(), BMP388::collect(), BMP280::measure(), BMM150::measure(), and BMP388::measure().

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perf_count()

void perf_count

(

perf_counter_t

handle

)

Count a performance event.

This call only affects counters that take single events; PC_COUNT, PC_INTERVAL etc.

Parameters

handle

The handle returned from perf_alloc.

Definition at line 199 of file perf_counter.cpp.

References dt, perf_ctr_interval::event_count, hrt_absolute_time(), hrt_abstime, perf_ctr_interval::M2, perf_ctr_interval::mean, PC_COUNT, PC_INTERVAL, perf_ctr_interval::time_first, perf_ctr_interval::time_last, perf_ctr_interval::time_least, perf_ctr_interval::time_most, and perf_ctr_header::type.

Referenced by at24c_bread(), at24c_bwrite(), QMC5883::check_conf(), HMC5883::check_conf(), IST8310::check_conf(), MPU9250::check_duplicate(), ICM20948::check_duplicate(), MPU9250::check_null_data(), ICM20948::check_null_data(), HMC5883::check_range(), FXAS21002C::check_registers(), FXOS8701CQ::check_registers(), LSM303D::check_registers(), BMI055_gyro::check_registers(), BMI055_accel::check_registers(), BMI088_gyro::check_registers(), L3GD20::check_registers(), BMI088_accel::check_registers(), BMI160::check_registers(), MPU9250::check_registers(), MPU6000::check_registers(), ICM20948::check_registers(), BMP280::collect(), MS5525::collect(), TFMINI::collect(), ETSAirspeed::collect(), SDP3X::collect(), MEASAirspeed::collect(), SRF02::collect(), TERARANGER::collect(), CM8JL65::collect(), VL53LXX::collect(), LidarLiteI2C::collect(), MB12XX::collect(), MPL3115A2::collect(), SF1XX::collect(), LeddarOne::collect(), PX4FLOW::collect(), SF0X::collect(), MS5611::collect(), LPS22HB::collect(), RM3100::collect(), MappyDot::collect(), LIS3MDL::collect(), INA226::collect(), LPS25H::collect(), QMC5883::collect(), HMC5883::collect(), BMM150::collect(), IST8310::collect(), BMP388::collect(), RCInput::cycle(), hott_telemetry_thread_main(), MS5525::init_ms5525(), SDP3X::init_sdp3x(), AK09916::is_ready(), BMP280::measure(), MS5525::measure(), LidarLitePWM::measure(), ETSAirspeed::measure(), MEASAirspeed::measure(), AK09916::measure(), LidarLiteI2C::measure(), ADIS16477::measure(), SRF02::measure(), TERARANGER::measure(), VL53LXX::measure(), FXAS21002C::measure(), ICM20948_mag::measure(), MPL3115A2::measure(), MPU9250_mag::measure(), ADIS16448::measure(), SF1XX::measure(), PX4FLOW::measure(), SF0X::measure(), ADIS16497::measure(), MS5611::measure(), LPS22HB::measure(), BMI055_gyro::measure(), BMI055_accel::measure(), BMI088_gyro::measure(), INA226::measure(), RM3100::measure(), BMI088_accel::measure(), LIS3MDL::measure(), LPS25H::measure(), L3GD20::measure(), HMC5883::measure(), BMM150::measure(), BMI160::measure(), IST8310::measure(), BMP388::measure(), MPU6000::measure(), ICM20948::measure(), LSM303D::measureAccelerometer(), INA226::probe(), PX4IO_serial_interface(), INA226::read(), PCA9685::read8(), PMW3901::readMotionCount(), VL53LXX::readRegister(), PMW3901::readRegister(), VL53LXX::readRegisterMulti(), recv_req_id(), MPU6000::reset(), ETSAirspeed::Run(), PAW3902::Run(), FXOS8701CQ::Run(), UavcanNode::Run(), rx_handle_packet(), serial_interrupt(), HMC5883::set_excitement(), LIS3MDL::set_excitement(), HMC5883::set_range(), LIS3MDL::set_range(), IST8310::set_selftest(), HMC5883::set_temperature_compensation(), PCA9685::setPWM(), Mavlink::task_main(), test_perf(), user_start(), PCA9685::write8(), VL53LXX::writeRegister(), PMW3901::writeRegister(), and VL53LXX::writeRegisterMulti().

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perf_end()

void perf_end

(

perf_counter_t

handle

)

End a performance event.

This call applies to counters that operate over ranges of time; PC_ELAPSED etc. If a call is made without a corresponding perf_begin call, or if perf_cancel has been called subsequently, no change is made to the counter.

Parameters

handle

The handle returned from perf_alloc.

Definition at line 275 of file perf_counter.cpp.

References dt, perf_ctr_elapsed::event_count, hrt_absolute_time(), perf_ctr_elapsed::M2, perf_ctr_elapsed::mean, PC_ELAPSED, perf_ctr_elapsed::time_least, perf_ctr_elapsed::time_most, perf_ctr_elapsed::time_start, perf_ctr_elapsed::time_total, and perf_ctr_header::type.

Referenced by DfMS5607Wrapper::_publish(), DfMS5611Wrapper::_publish(), DfBmp280Wrapper::_publish(), DfAK8963Wrapper::_publish(), DfHmc5883Wrapper::_publish(), DfMPU6050Wrapper::_publish(), DfLsm9ds1Wrapper::_publish(), DfMpu9250Wrapper::_publish(), load_mon::LoadMon::_ram_used(), adc_measure(), at24c_bread(), at24c_bwrite(), at24c_initialize(), MPU9250::check_duplicate(), ICM20948::check_duplicate(), MPU9250::check_null_data(), ICM20948::check_null_data(), BMP280::collect(), MS5525::collect(), TFMINI::collect(), ETSAirspeed::collect(), SDP3X::collect(), MEASAirspeed::collect(), SRF02::collect(), TERARANGER::collect(), CM8JL65::collect(), VL53LXX::collect(), LidarLiteI2C::collect(), Radar::collect(), MB12XX::collect(), MPL3115A2::collect(), SF1XX::collect(), LeddarOne::collect(), PX4FLOW::collect(), SF0X::collect(), LSM303AGR::collect(), MS5611::collect(), LPS22HB::collect(), RM3100::collect(), MappyDot::collect(), LIS3MDL::collect(), INA226::collect(), QMC5883::collect(), LPS25H::collect(), HMC5883::collect(), BMM150::collect(), IST8310::collect(), BMP388::collect(), controls_tick(), RCInput::cycle(), dm_read(), dm_write(), dsm_port_input(), px4::logger::LogWriterFile::LogFileBuffer::fsync(), BMP280::measure(), LidarLitePWM::measure(), ADIS16477::measure(), FXAS21002C::measure(), MPL3115A2::measure(), ADIS16448::measure(), ADIS16497::measure(), VOXLPM::measure(), MS5611::measure(), BMA180::measure(), BMI055_gyro::measure(), BMI055_accel::measure(), BMI088_gyro::measure(), BMI088_accel::measure(), L3GD20::measure(), BMM150::measure(), MPU9250::measure(), BMI160::measure(), BMP388::measure(), MPU6000::measure(), ICM20948::measure(), LSM303D::measureAccelerometer(), LSM303D::measureMagnetometer(), param_export(), param_find_internal(), param_get(), param_save_default(), param_set_internal(), Sih::run(), MulticopterRateControl::Run(), MulticopterAttitudeControl::Run(), RCUpdate::RCUpdate::Run(), AirspeedModule::Run(), FixedwingAttitudeControl::Run(), RoverPositionControl::run(), MulticopterPositionControl::Run(), VtolAttitudeControl::Run(), PAW3902::Run(), Sensors::run(), Ekf2::Run(), Navigator::run(), BatteryStatus::Run(), DShotOutput::Run(), FXOS8701CQ::Run(), PX4FMU::Run(), PMW3901::Run(), FixedwingPositionControl::Run(), UavcanNode::Run(), land_detector::LandDetector::Run(), rx_dma_callback(), ADC::sample(), PX4IO::task_main(), Mavlink::task_main(), test_perf(), user_start(), PX4IO::write(), and px4::logger::LogWriterFile::LogFileBuffer::write_to_file().

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perf_event_count()

uint64_t perf_event_count

(

perf_counter_t

handle

)

Return current event_count.

Parameters

handle

The counter returned from perf_alloc.

Returns

event_count

Definition at line 547 of file perf_counter.cpp.

References perf_ctr_elapsed::event_count, perf_ctr_interval::event_count, PC_COUNT, PC_ELAPSED, PC_INTERVAL, and perf_ctr_header::type.

Referenced by BMP280::collect(), MS5525::collect(), ETSAirspeed::collect(), SDP3X::collect(), MEASAirspeed::collect(), LidarLiteI2C::collect(), MPL3115A2::collect(), LSM303AGR::collect(), MS5611::collect(), LPS22HB::collect(), RM3100::collect(), LIS3MDL::collect(), LPS25H::collect(), QMC5883::collect(), HMC5883::collect(), BMM150::collect(), IST8310::collect(), BMP388::collect(), AK09916::measure(), LidarLiteI2C::measure(), FXAS21002C::measure(), ICM20948_mag::measure(), ADIS16448::measure(), MPU9250_mag::measure(), ADIS16497::measure(), BMI055_gyro::measure(), BMI055_accel::measure(), BMI088_gyro::measure(), BMI088_accel::measure(), L3GD20::measure(), MPU9250::measure(), BMI160::measure(), MPU6000::measure(), ICM20948::measure(), LSM303D::measureAccelerometer(), LSM303D::measureMagnetometer(), FXOS8701CQ::Run(), and BMM150::self_test().

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perf_free()

void perf_free

(

perf_counter_t

handle

)

Free a counter.

Parameters

handle

The performance counter's handle.

Definition at line 185 of file perf_counter.cpp.

References perf_ctr_header::link, perf_counters, and perf_counters_mutex.

Referenced by hott_telemetry_thread_main(), PX4IO_serial_interface(), linux_pwm_out::task_main(), snapdragon_pwm::task_main(), task_main(), test_perf(), ADC::~ADC(), ADIS16448::~ADIS16448(), ADIS16477::~ADIS16477(), ADIS16497::~ADIS16497(), Airspeed::~Airspeed(), AirspeedModule::~AirspeedModule(), AK09916::~AK09916(), BATT_SMBUS::~BATT_SMBUS(), BMA180::~BMA180(), BMI055_accel::~BMI055_accel(), BMI055_gyro::~BMI055_gyro(), BMI088_accel::~BMI088_accel(), BMI088_gyro::~BMI088_gyro(), BMI160::~BMI160(), BMM150::~BMM150(), BMP280::~BMP280(), BMP388::~BMP388(), CM8JL65::~CM8JL65(), DfAK8963Wrapper::~DfAK8963Wrapper(), DfBmp280Wrapper::~DfBmp280Wrapper(), DfHmc5883Wrapper::~DfHmc5883Wrapper(), DfLsm9ds1Wrapper::~DfLsm9ds1Wrapper(), DfMPU6050Wrapper::~DfMPU6050Wrapper(), DfMpu9250Wrapper::~DfMpu9250Wrapper(), DfMS5607Wrapper::~DfMS5607Wrapper(), DfMS5611Wrapper::~DfMS5611Wrapper(), DShotOutput::~DShotOutput(), Ekf2::~Ekf2(), FixedwingAttitudeControl::~FixedwingAttitudeControl(), FixedwingPositionControl::~FixedwingPositionControl(), FXAS21002C::~FXAS21002C(), FXOS8701CQ::~FXOS8701CQ(), HMC5883::~HMC5883(), ICM20948::~ICM20948(), ICM20948_mag::~ICM20948_mag(), INA226::~INA226(), IST8310::~IST8310(), L3GD20::~L3GD20(), land_detector::LandDetector::~LandDetector(), LeddarOne::~LeddarOne(), LidarLite::~LidarLite(), LIS3MDL::~LIS3MDL(), load_mon::LoadMon::~LoadMon(), px4::logger::LogWriterFile::LogFileBuffer::~LogFileBuffer(), LPS22HB::~LPS22HB(), LPS25H::~LPS25H(), LSM303AGR::~LSM303AGR(), LSM303D::~LSM303D(), MappyDot::~MappyDot(), Mavlink::~Mavlink(), MB12XX::~MB12XX(), MixingOutput::~MixingOutput(), MPL3115A2::~MPL3115A2(), MPU6000::~MPU6000(), MPU9250::~MPU9250(), MPU9250_mag::~MPU9250_mag(), MS5611::~MS5611(), MulticopterAttitudeControl::~MulticopterAttitudeControl(), MulticopterPositionControl::~MulticopterPositionControl(), MulticopterRateControl::~MulticopterRateControl(), PAW3902::~PAW3902(), PMW3901::~PMW3901(), PX4FLOW::~PX4FLOW(), PX4FMU::~PX4FMU(), PX4IO::~PX4IO(), QMC5883::~QMC5883(), Radar::~Radar(), RCInput::~RCInput(), RCUpdate::RCUpdate::~RCUpdate(), RM3100::~RM3100(), RoverPositionControl::~RoverPositionControl(), SF0X::~SF0X(), SF1XX::~SF1XX(), Simulator::~Simulator(), SRF02::~SRF02(), TAP_ESC::~TAP_ESC(), TERARANGER::~TERARANGER(), TFMINI::~TFMINI(), UavcanNode::~UavcanNode(), VL53LXX::~VL53LXX(), VOXLPM::~VOXLPM(), and VtolAttitudeControl::~VtolAttitudeControl().

perf_iterate_all()

void perf_iterate_all	(	perf_callback	cb,
		void *	user
	)

Iterate over all performance counters using a callback.

Caution: This will aquire the mutex, so do not call any other perf_* method that aquire the mutex as well from the callback (If this is needed, configure the mutex to be reentrant).

Parameters

cb	callback method
user	custom argument for the callback

Definition at line 575 of file perf_counter.cpp.

References perf_ctr_header::link, perf_counters, and perf_counters_mutex.

Referenced by px4::logger::Logger::write_perf_data().

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perf_print_all()

void perf_print_all

(

int

fd

)

Print all of the performance counters.

Parameters

fd	File descriptor to print to - e.g. 0 for stdout

Definition at line 589 of file perf_counter.cpp.

References perf_ctr_header::link, perf_counters, perf_counters_mutex, and perf_print_counter_fd().

Referenced by perf_main(), and test_perf().

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perf_print_counter()

void perf_print_counter

(

perf_counter_t

handle

)

Print one performance counter to stdout.

Parameters

handle

The counter to print.

Definition at line 437 of file perf_counter.cpp.

References perf_print_counter_fd().

Referenced by hott_telemetry_main(), DfMPU6050Wrapper::info(), DfLsm9ds1Wrapper::info(), DfMpu9250Wrapper::info(), param_print_status(), BMP280::print_info(), ADIS16477::print_info(), FXAS21002C::print_info(), TFMINI::print_info(), LidarLite::print_info(), MPL3115A2::print_info(), PX4FLOW::print_info(), AK09916::print_info(), SF0X::print_info(), ADIS16497::print_info(), TERARANGER::print_info(), PAW3902::print_info(), LPS22HB::print_info(), CM8JL65::print_info(), SF1XX::print_info(), PMW3901::print_info(), VL53LXX::print_info(), MB12XX::print_info(), SRF02::print_info(), LSM303AGR::print_info(), MS5611::print_info(), ADIS16448::print_info(), LeddarOne::print_info(), FXOS8701CQ::print_info(), Radar::print_info(), LIS3MDL::print_info(), HMC5883::print_info(), RM3100::print_info(), BMA180::print_info(), BMI088_gyro::print_info(), UavcanNode::print_info(), BMI055_gyro::print_info(), VOXLPM::print_info(), LSM303D::print_info(), BMI055_accel::print_info(), QMC5883::print_info(), INA226::print_info(), MappyDot::print_info(), LPS25H::print_info(), BMI088_accel::print_info(), L3GD20::print_info(), IST8310::print_info(), BMM150::print_info(), MPU9250::print_info(), BMI160::print_info(), MPU6000::print_info(), BMP388::print_info(), ICM20948::print_info(), MulticopterRateControl::print_status(), MulticopterAttitudeControl::print_status(), load_mon::LoadMon::print_status(), RCUpdate::RCUpdate::print_status(), FixedwingAttitudeControl::print_status(), RCInput::print_status(), AirspeedModule::print_status(), MulticopterPositionControl::print_status(), VtolAttitudeControl::print_status(), Ekf2::print_status(), DShotOutput::print_status(), PX4FMU::print_status(), FixedwingPositionControl::print_status(), MixingOutput::printStatus(), status(), and test_perf().

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perf_print_counter_buffer()

int perf_print_counter_buffer	(	char *	buffer,
		int	length,
		perf_counter_t	handle
	)

Print one performance counter to a buffer.

Parameters

buffer	buffer to write to
length	buffer length
handle	The counter to print.
return	number of bytes written

Definition at line 495 of file perf_counter.cpp.

References perf_ctr_elapsed::event_count, perf_ctr_interval::event_count, perf_ctr_elapsed::M2, perf_ctr_interval::M2, perf_ctr_header::name, PC_COUNT, PC_ELAPSED, PC_INTERVAL, perf_ctr_interval::time_first, perf_ctr_interval::time_last, perf_ctr_elapsed::time_least, perf_ctr_interval::time_least, perf_ctr_elapsed::time_most, perf_ctr_interval::time_most, perf_ctr_elapsed::time_total, and perf_ctr_header::type.

Referenced by px4::logger::Logger::perf_iterate_callback().

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perf_print_counter_fd()

void perf_print_counter_fd	(	int	fd,
		perf_counter_t	handle
	)

Print one performance counter to a fd.

Parameters

fd	File descriptor to print to - e.g. 0 for stdout
handle	The counter to print.

Definition at line 447 of file perf_counter.cpp.

References perf_ctr_elapsed::event_count, perf_ctr_interval::event_count, perf_ctr_elapsed::M2, perf_ctr_interval::M2, perf_ctr_header::name, PC_COUNT, PC_ELAPSED, PC_INTERVAL, perf_ctr_interval::time_first, perf_ctr_interval::time_last, perf_ctr_elapsed::time_least, perf_ctr_interval::time_least, perf_ctr_elapsed::time_most, perf_ctr_interval::time_most, perf_ctr_elapsed::time_total, and perf_ctr_header::type.

Referenced by perf_print_all(), and perf_print_counter().

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perf_print_latency()

void perf_print_latency

(

int

fd

)

Print hrt latency counters.

Parameters

fd	File descriptor to print to - e.g. 0 for stdout

Definition at line 603 of file perf_counter.cpp.

References latency_bucket_count, latency_buckets, and latency_counters.

Referenced by perf_main().

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perf_reset()

void perf_reset

(

perf_counter_t

handle

)

Reset a performance counter.

This call resets performance counter to initial state

Parameters

handle

The handle returned from perf_alloc.

Definition at line 402 of file perf_counter.cpp.

References perf_ctr_elapsed::event_count, perf_ctr_interval::event_count, PC_COUNT, PC_ELAPSED, PC_INTERVAL, perf_ctr_interval::time_event, perf_ctr_interval::time_first, perf_ctr_interval::time_last, perf_ctr_elapsed::time_least, perf_ctr_interval::time_least, perf_ctr_elapsed::time_most, perf_ctr_interval::time_most, perf_ctr_elapsed::time_start, perf_ctr_elapsed::time_total, and perf_ctr_header::type.

Referenced by hott_telemetry_thread_main(), and perf_reset_all().

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perf_reset_all()

void perf_reset_all

(

void

)

Reset all of the performance counters.

Definition at line 616 of file perf_counter.cpp.

References latency_bucket_count, latency_counters, perf_ctr_header::link, perf_counters, perf_counters_mutex, and perf_reset().

Referenced by perf_main(), and px4::logger::Logger::start_log_file().

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perf_set_count()

void perf_set_count	(	perf_counter_t	handle,
		uint64_t	count
	)

Set a counter.

This call applies to counters of type PC_COUNT. It (re-)sets the count.

Parameters

handle	The handle returned from perf_alloc.
count	The counter value to be set.

Definition at line 361 of file perf_counter.cpp.

References PC_COUNT, and perf_ctr_header::type.

Referenced by DfMPU6050Wrapper::_publish(), DfLsm9ds1Wrapper::_publish(), and DfMpu9250Wrapper::_publish().

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perf_set_elapsed()

void perf_set_elapsed	(	perf_counter_t	handle,
		int64_t	elapsed
	)

Register a measurement.

This call applies to counters that operate over ranges of time; PC_ELAPSED etc. If a call is made without a corresponding perf_begin call. It sets the value provided as argument as a new measurement.

Parameters

handle	The handle returned from perf_alloc.
elapsed	The time elapsed. Negative values lead to incrementing the overrun counter.

Definition at line 320 of file perf_counter.cpp.

References dt, perf_ctr_elapsed::event_count, perf_ctr_elapsed::M2, perf_ctr_elapsed::mean, PC_ELAPSED, perf_ctr_elapsed::time_least, perf_ctr_elapsed::time_most, perf_ctr_elapsed::time_start, perf_ctr_elapsed::time_total, and perf_ctr_header::type.

Referenced by TAP_ESC::cycle(), PX4IO::io_set_control_state(), linux_pwm_out::task_main(), snapdragon_pwm::task_main(), and MixingOutput::updateLatencyPerfCounter().

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Variable Documentation

latency_bucket_count

const uint16_t latency_bucket_count = LATENCY_BUCKET_COUNT

Definition at line 52 of file perf_counter.cpp.

Referenced by perf_print_latency(), and perf_reset_all().

latency_buckets

const uint16_t latency_buckets[LATENCY_BUCKET_COUNT] = { 1, 2, 5, 10, 20, 50, 100, 1000 }

Definition at line 53 of file perf_counter.cpp.

Referenced by perf_print_latency().

latency_counters

__EXPORT uint32_t latency_counters[LATENCY_BUCKET_COUNT+1]

Definition at line 54 of file perf_counter.cpp.

Referenced by perf_print_latency(), and perf_reset_all().

perf_counters

sq_queue_t perf_counters = { nullptr, nullptr }

static

List of all known counters.

Definition at line 108 of file perf_counter.cpp.

Referenced by perf_alloc(), perf_alloc_once(), perf_free(), perf_iterate_all(), perf_print_all(), and perf_reset_all().

perf_counters_mutex

pthread_mutex_t perf_counters_mutex = PTHREAD_MUTEX_INITIALIZER

mutex protecting access to the perf_counters linked list (which is read from & written to by different threads)

Definition at line 113 of file perf_counter.cpp.

Referenced by perf_alloc(), perf_alloc_once(), perf_free(), perf_iterate_all(), perf_print_all(), and perf_reset_all().