Perf_get_num_starts(), Alt_get_cpu_freq(), Perf_get_num_starts() -10 – Altera Embedded Peripherals IP User Manual
Page 310: Alt_get_cpu_freq() -10
Description:
Function
perf_get_section_time()
reads the raw time for a given section.
This is the time, in clock cycles, that the section has been running. This function
has the side effect of stopping the counters.
perf_get_num_starts()
Prototype:
alt_u32 perf_get_num_starts
(void* hw_base_address, int which_section)
Thread-safe:
Yes.
Available from
ISR:
Yes.
Include:
Parameters:
hw_base_address
—performance counter core base address.
which_section
—counter section number.
Returns:
Number of counter events.
Description:
Function
perf_get_num_starts()
retrieves the number of counter events (or
times a counter has been started). If
which_section
= 0, it retrieves the number
of global events (times the performance counter core has been enabled). This
function does not stop the counters.
alt_get_cpu_freq()
Prototype:
alt_u32 alt_get_cpu_freq()
Thread-safe:
Yes.
Available from
ISR:
Yes.
Include:
Parameters:
Returns:
CPU frequency in Hz.
Description:
Function
alt_get_cpu_freq()
returns the CPU frequency in Hz.
31-10
perf_get_num_starts()
UG-01085
2014.24.07
Altera Corporation
Performance Counter Core