User Guide

  • 2020.4
  • 12/10/2020
  • Public Content
Contents

Counter API

Counter is a user-defined characteristic or metric of hardware or software behavior that can be used to collect information about and correlate with execution breakdown, such as tasks, events, and markers. For example, different counters may represent different parts of the system on a chip (SoC) and count hardware and software characteristics.
To define and create a counter object, use the following primitives:
__itt_counter ITTAPI __itt_counter_create_typedA __itt_counter_create_typedA(const char *name, const char *domain, __itt_metadata_type type)
__itt_counter ITTAPI __itt_counter_create_typedW __itt_counter_create_typedW(const wchar_t *name, const wchar_t *domain, __itt_metadata_type type)
Parameters of the primitives:
[in]
domain
Counter domain
[in]
name
Counter name
[in]
type
Counter type
To directly set the counter value, use the following primitive:
void ITTAPI __itt_counter_set_value(__itt_counter id, void *value_ptr)
Parameters of the primitive:
[in]
id
Counter ID
[in]
value_ptr
Counter value
Example
The following example creates a counter that measures temperature and memory usage metrics.
#include "ittnotify.h" __itt_counter temperatureCounter = __itt_counter_create_typed(__TEXT("Temperature"), __TEXT("Domain"), __itt_metadata_u64); unsigned __int64 temperature; while (...) { ... temperature = getTemperature(); __itt_counter_set_value(temperatureCounter, &temperature); ... }
 
 

Product and Performance Information

1

Performance varies by use, configuration and other factors. Learn more at www.Intel.com/PerformanceIndex.