Package org.eclipse.jgit.internal.storage.file

Class WindowCache.StatsRecorderImpl

java.lang.Object

org.eclipse.jgit.internal.storage.file.WindowCache.StatsRecorderImpl

All Implemented Interfaces:

WindowCache.StatsRecorder, WindowCacheStats

Enclosing class:

WindowCache

static class WindowCache.StatsRecorderImpl
extends java.lang.Object
implements WindowCache.StatsRecorder, WindowCacheStats

Field Summary

Fields

Modifier and Type	Field	Description
private java.util.concurrent.atomic.LongAdder	evictionCount
private java.util.concurrent.atomic.LongAdder	hitCount
private java.util.concurrent.atomic.LongAdder	loadFailureCount
private java.util.concurrent.atomic.LongAdder	loadSuccessCount
private java.util.concurrent.atomic.LongAdder	missCount
private java.util.concurrent.atomic.LongAdder	openByteCount
private java.util.Map<java.lang.String,java.util.concurrent.atomic.LongAdder>	openByteCountPerRepository
private java.util.concurrent.atomic.LongAdder	openFileCount
private java.util.concurrent.atomic.LongAdder	totalLoadTime

Constructor Summary

Constructors

Constructor	Description
StatsRecorderImpl()	Constructs an instance with all counts initialized to zero.

Method Summary

Modifier and Type	Method	Description
long	getEvictionCount()	Number of cache evictions
long	getHitCount()	Number of cache hits
long	getLoadFailureCount()	Number of failed loads
long	getLoadSuccessCount()	Number of successful loads
long	getMissCount()	Number of cache misses.
long	getOpenByteCount()	Number of bytes cached
java.util.Map<java.lang.String,java.lang.Long>	getOpenByteCountPerRepository()	Number of bytes cached per repository
long	getOpenFileCount()	Number of pack files kept open by the cache
WindowCacheStats	getStats()	Returns a snapshot of this recorder's stats.
long	getTotalLoadTime()	Total time in nanoseconds the cache spent loading new values.
void	recordEvictions(int count)	Record cache evictions due to the cache evictions strategy
void	recordHits(int count)	Record cache hits.
void	recordLoadFailure(long loadTimeNanos)	Record a failed load of a cache entry
void	recordLoadSuccess(long loadTimeNanos)	Record a successful load of a cache entry
void	recordMisses(int count)	Record cache misses.
void	recordOpenBytes(Pack pack, int delta)	Record cached bytes
void	recordOpenFiles(int delta)	Record files opened by cache
private static java.lang.String	repositoryId(Pack pack)
void	resetCounters()	Reset counters.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.eclipse.jgit.storage.file.WindowCacheStats

getAverageLoadTime, getEvictionRatio, getHitRatio, getLoadCount, getLoadFailureRatio, getMissRatio, getRequestCount

Field Detail

hitCount

private final java.util.concurrent.atomic.LongAdder hitCount

missCount

private final java.util.concurrent.atomic.LongAdder missCount

loadSuccessCount

private final java.util.concurrent.atomic.LongAdder loadSuccessCount

loadFailureCount

private final java.util.concurrent.atomic.LongAdder loadFailureCount

totalLoadTime

private final java.util.concurrent.atomic.LongAdder totalLoadTime

evictionCount

private final java.util.concurrent.atomic.LongAdder evictionCount

openFileCount

private final java.util.concurrent.atomic.LongAdder openFileCount

openByteCount

private final java.util.concurrent.atomic.LongAdder openByteCount

openByteCountPerRepository

private final java.util.Map<java.lang.String,java.util.concurrent.atomic.LongAdder> openByteCountPerRepository

Constructor Detail

StatsRecorderImpl

public StatsRecorderImpl()

Constructs an instance with all counts initialized to zero.

Method Detail

recordHits

public void recordHits(int count)

Description copied from interface: WindowCache.StatsRecorder

Record cache hits. Called when cache returns a cached entry.

Specified by:

recordHits in interface WindowCache.StatsRecorder

Parameters:

count - number of cache hits to record

recordMisses

public void recordMisses(int count)

Description copied from interface: WindowCache.StatsRecorder

Record cache misses. Called when the cache returns an entry which had to be loaded.

Specified by:

recordMisses in interface WindowCache.StatsRecorder

Parameters:

count - number of cache misses to record

recordLoadSuccess

public void recordLoadSuccess(long loadTimeNanos)

Description copied from interface: WindowCache.StatsRecorder

Record a successful load of a cache entry

Specified by:

recordLoadSuccess in interface WindowCache.StatsRecorder

Parameters:

loadTimeNanos - time to load a cache entry

recordLoadFailure

public void recordLoadFailure(long loadTimeNanos)

Description copied from interface: WindowCache.StatsRecorder

Record a failed load of a cache entry

Specified by:

recordLoadFailure in interface WindowCache.StatsRecorder

Parameters:

loadTimeNanos - time used trying to load a cache entry

recordEvictions

public void recordEvictions(int count)

Description copied from interface: WindowCache.StatsRecorder

Record cache evictions due to the cache evictions strategy

Specified by:

recordEvictions in interface WindowCache.StatsRecorder

Parameters:

count - number of evictions to record

recordOpenFiles

public void recordOpenFiles(int delta)

Description copied from interface: WindowCache.StatsRecorder

Record files opened by cache

Specified by:

recordOpenFiles in interface WindowCache.StatsRecorder

Parameters:

delta - delta of number of files opened by cache

recordOpenBytes

public void recordOpenBytes(Pack pack,
                            int delta)

Description copied from interface: WindowCache.StatsRecorder

Record cached bytes

Specified by:

recordOpenBytes in interface WindowCache.StatsRecorder

Parameters:

pack - pack file the bytes are read from

delta - delta of cached bytes

repositoryId

private static java.lang.String repositoryId(Pack pack)

getStats

public WindowCacheStats getStats()

Description copied from interface: WindowCache.StatsRecorder

Returns a snapshot of this recorder's stats. Note that this may be an inconsistent view, as it may be interleaved with update operations.

Specified by:

getStats in interface WindowCache.StatsRecorder

Returns:

a snapshot of this recorder's stats

getHitCount

public long getHitCount()

Description copied from interface: WindowCacheStats

Number of cache hits

Specified by:

getHitCount in interface WindowCacheStats

Returns:

number of cache hits

getMissCount

public long getMissCount()

Description copied from interface: WindowCacheStats

Number of cache misses.

Specified by:

getMissCount in interface WindowCacheStats

Returns:

number of cash misses

getLoadSuccessCount

public long getLoadSuccessCount()

Description copied from interface: WindowCacheStats

Number of successful loads

Specified by:

getLoadSuccessCount in interface WindowCacheStats

Returns:

number of successful loads

getLoadFailureCount

public long getLoadFailureCount()

Description copied from interface: WindowCacheStats

Number of failed loads

Specified by:

getLoadFailureCount in interface WindowCacheStats

Returns:

number of failed loads

getEvictionCount

public long getEvictionCount()

Description copied from interface: WindowCacheStats

Number of cache evictions

Specified by:

getEvictionCount in interface WindowCacheStats

Returns:

number of evictions

getTotalLoadTime

public long getTotalLoadTime()

Description copied from interface: WindowCacheStats

Total time in nanoseconds the cache spent loading new values.

Specified by:

getTotalLoadTime in interface WindowCacheStats

Returns:

the total number of nanoseconds the cache has spent loading new values

getOpenFileCount

public long getOpenFileCount()

Description copied from interface: WindowCacheStats

Number of pack files kept open by the cache

Specified by:

getOpenFileCount in interface WindowCacheStats

Returns:

number of files kept open by cache

getOpenByteCount

public long getOpenByteCount()

Description copied from interface: WindowCacheStats

Number of bytes cached

Specified by:

getOpenByteCount in interface WindowCacheStats

Returns:

number of bytes cached

resetCounters

public void resetCounters()

Description copied from interface: WindowCacheStats

Reset counters. Does not reset open bytes and open files counters.

Specified by:

resetCounters in interface WindowCacheStats

getOpenByteCountPerRepository

public java.util.Map<java.lang.String,java.lang.Long> getOpenByteCountPerRepository()

Description copied from interface: WindowCacheStats

Number of bytes cached per repository

Specified by:

getOpenByteCountPerRepository in interface WindowCacheStats

Returns:

number of bytes cached per repository