perf::Recorder Class Reference

#include <statistics.h>

Public Member Functions
	Recorder (uint32_t resolution_s, uint32_t capacity_s)
void	Tick ()
void	TickAt (uint64_t timestamp)
uint64_t	GetNoTicks (uint32_t retrospect_s) const
uint32_t	capacity_s () const
uint32_t	resolution_s () const

Private Attributes
std::vector< uint32_t >	bins_
uint64_t	last_timestamp_
uint32_t	capacity_s_
uint32_t	resolution_s_
unsigned	no_bins_

Detailed Description

Keeps track of events over time. Can be used to query the number of events between now and a point in time in the past. The time range should be smaller than capacity_s seconds. Uses a monotonic clock. Not thread-safe.

Definition at line 182 of file statistics.h.

Constructor & Destructor Documentation

perf::Recorder::Recorder	(	uint32_t	resolution_s,
		uint32_t	capacity_s
	)

If necessary, capacity_s is extended to be a multiple of resolution_s

Definition at line 196 of file statistics.cc.

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Member Function Documentation

uint32_t perf::Recorder::capacity_s ( ) const

inline

Definition at line 190 of file statistics.h.

uint64_t perf::Recorder::GetNoTicks

(

uint32_t

retrospect_s

)

const

Definition at line 245 of file statistics.cc.

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uint32_t perf::Recorder::resolution_s ( ) const

inline

Definition at line 191 of file statistics.h.

void perf::Recorder::Tick

(

)

Definition at line 213 of file statistics.cc.

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void perf::Recorder::TickAt

(

uint64_t

timestamp

)

Definition at line 218 of file statistics.cc.

Referenced by Tick().

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Member Data Documentation

std::vector<uint32_t> perf::Recorder::bins_

private

Records number of ticks (events) per unit of resolution. A ring buffer. Entries older than capacity_s get overwritten by new events.

Definition at line 198 of file statistics.h.

Referenced by GetNoTicks(), Recorder(), and TickAt().

uint32_t perf::Recorder::capacity_s_

private

Time window in seconds that the recorder is supposed to remember.

Definition at line 208 of file statistics.h.

Referenced by Recorder().

uint64_t perf::Recorder::last_timestamp_

private

When the most recent tick occurred.

Definition at line 203 of file statistics.h.

Referenced by GetNoTicks(), and TickAt().

unsigned perf::Recorder::no_bins_

private

Shorthand for bins_.size(), constant during lifetime of the recorder.

Definition at line 218 of file statistics.h.

Referenced by GetNoTicks(), Recorder(), and TickAt().

uint32_t perf::Recorder::resolution_s_

private

Size of the bins for the tick counters.

Definition at line 213 of file statistics.h.

Referenced by GetNoTicks(), Recorder(), and TickAt().

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The documentation for this class was generated from the following files:

• /home/sftnight/jenkins/workspace/CvmfsDoxygen/label/docker-x86_64/cvmfs/cvmfs/statistics.h
• /home/sftnight/jenkins/workspace/CvmfsDoxygen/label/docker-x86_64/cvmfs/cvmfs/statistics.cc