detail::CycleCounterArm Struct Reference

Hardware cycle counter for AArch64/ARM. More...

#include <cycle_counter_arm.h>

Public Member Functions
FORCE_INLINE void	start () noexcept
	Record the starting tick count.
FORCE_INLINE void	stop () noexcept
	Record the ending tick count and accumulate.
void	reset () noexcept
	Reset accumulated ticks and run count to zero.
double	avg_cycles () const
	Return the average ticks per start/stop pair.

Public Attributes
unsigned long long	start_cycles
unsigned long long	total_cycles = 0
unsigned long long	runs = 0

Detailed Description

Hardware cycle counter for AArch64/ARM.

Reads the virtual count register (cntvct_el0) via inline assembly. Note that this returns timer ticks, not raw CPU cycles — the tick frequency is given by cntfrq_el0.

Member Function Documentation

avg_cycles()

double detail::CycleCounterArm::avg_cycles ( ) const

inline

Return the average ticks per start/stop pair.

reset()

void detail::CycleCounterArm::reset ( )

inlinenoexcept

Reset accumulated ticks and run count to zero.

start()

FORCE_INLINE void detail::CycleCounterArm::start ( )

inlinenoexcept

Record the starting tick count.

stop()

FORCE_INLINE void detail::CycleCounterArm::stop ( )

inlinenoexcept

Record the ending tick count and accumulate.

Member Data Documentation

runs

unsigned long long detail::CycleCounterArm::runs = 0

start_cycles

unsigned long long detail::CycleCounterArm::start_cycles

total_cycles

unsigned long long detail::CycleCounterArm::total_cycles = 0

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The documentation for this struct was generated from the following file:

• core/include/utilities/cycle_counter/cycle_counter_arm.h