Package io.github.zhengzhengyiyi.util

Class PerformanceMonitor

java.lang.Object

io.github.zhengzhengyiyi.util.PerformanceMonitor

public class PerformanceMonitor
extends Object

A performance monitoring utility for tracking operation execution times, memory usage, and error rates. Provides detailed statistics for performance analysis and optimization.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PerformanceMonitor.OperationStats	Statistics container for tracking performance metrics of individual operations.
static class	PerformanceMonitor.Timer	AutoCloseable timer that automatically records performance metrics when closed.

Constructor Summary

Constructors

Constructor	Description
PerformanceMonitor()

Method Summary

Modifier and Type	Method	Description
static int	getActiveOperations()	Gets the number of currently active operations being monitored.
static ConcurrentHashMap<String,PerformanceMonitor.OperationStats>	getAllStats()	Gets all collected performance statistics.
static PerformanceMonitor.OperationStats	getStats(String operationName)	Gets statistics for a specific operation.
static String	getSummary()	Generates a formatted summary of all performance statistics.
static long	getTotalMemoryUsed()	Gets the total memory used by all monitored operations.
static boolean	isEnabled()	Checks if performance monitoring is currently enabled.
static void	reset()	Resets all collected statistics and counters.
static void	setEnabled(boolean isEnabled)	Enables or disables performance monitoring.
static PerformanceMonitor.Timer	start(String operationName)	Starts timing an operation.

Methods inherited from class java.lang.Object

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

Constructor Details

PerformanceMonitor

public PerformanceMonitor()

Method Details

start

public static PerformanceMonitor.Timer start(String operationName)

Starts timing an operation.

Parameters:

operationName - the name of the operation to monitor

Returns:

a Timer instance that should be closed when the operation completes

getStats

public static PerformanceMonitor.OperationStats getStats(String operationName)

Gets statistics for a specific operation.

Parameters:

operationName - the name of the operation

Returns:

the OperationStats for the specified operation, or null if not found

getAllStats

public static ConcurrentHashMap<String,PerformanceMonitor.OperationStats> getAllStats()

Gets all collected performance statistics.

Returns:

a copy of all operation statistics

reset

public static void reset()

Resets all collected statistics and counters.

setEnabled

public static void setEnabled(boolean isEnabled)

Enables or disables performance monitoring.

Parameters:

isEnabled - true to enable monitoring, false to disable

isEnabled

public static boolean isEnabled()

Checks if performance monitoring is currently enabled.

Returns:

true if monitoring is enabled

getTotalMemoryUsed

public static long getTotalMemoryUsed()

Gets the total memory used by all monitored operations.

Returns:

total memory usage in bytes

getActiveOperations

public static int getActiveOperations()

Gets the number of currently active operations being monitored.

Returns:

count of active operations

getSummary

public static String getSummary()

Generates a formatted summary of all performance statistics.

Returns:

a string containing formatted performance summary