A set of utilities for monitoring and managing system resources. More...

Functions
double	getRelativeTimeSeconds ()
	Get the relative time in seconds since the program started.

double	getAbsoluteTimeSeconds ()
	Get the absolute time in seconds since the epoch.

bool	parseMemInfo (const std::string &key, long &value)
	Parse a specific key from /proc/meminfo.

long	getTotalMemoryKB ()
	Get the total system memory in kilobytes.

long	getUsedMemoryKB ()
	Get the used system memory in kilobytes.

long	getFreeMemoryKB ()
	Get the free system memory in kilobytes(totally free memory, not even used for cache).

long	getAvailableMemoryKB ()
	Get the available system memory in kilobytes(accounts page cache as available).

bool	setMemoryLimitKB (rlim_t limitInKB)
	Set the memory limit for the process.

rlim_t	getMemoryLimitKB ()
	Get the current memory limit for the process.

bool	isMemoryLimitExceeded ()
	Check if the current memory usage exceeds the set limit.

void	printProcessResourceUsage ()
	Pretty print for the resource usage data gotten from getrusage()

Variables
std::atomic< rlim_t >	memoryLimitKB
	The current memory limit for the process in kilobytes.

const std::chrono::steady_clock::time_point	startTime
	The start time of the program.

Detailed Description

A set of utilities for monitoring and managing system resources.

This group provides functions and variables for:

Tracking system memory usage
Setting and checking memory limits
Measuring elapsed time

Function Documentation

◆ getAbsoluteTimeSeconds()

double SystemResourceMonitor::getAbsoluteTimeSeconds ( )

Get the absolute time in seconds since the epoch.

Returns: Double representing the current time in seconds.

◆ getAvailableMemoryKB()

long SystemResourceMonitor::getAvailableMemoryKB ( )

Get the available system memory in kilobytes(accounts page cache as available).

Returns: Long representing the available memory in KB.

◆ getFreeMemoryKB()

long SystemResourceMonitor::getFreeMemoryKB ( )

Get the free system memory in kilobytes(totally free memory, not even used for cache).

Returns: Long representing the free memory in KB.

◆ getMemoryLimitKB()

rlim_t SystemResourceMonitor::getMemoryLimitKB ( )

Get the current memory limit for the process.

Returns: The memory limit in kilobytes.

◆ getRelativeTimeSeconds()

double SystemResourceMonitor::getRelativeTimeSeconds ( )

Get the relative time in seconds since the program started.

Returns: Double representing the elapsed time in seconds.

◆ getTotalMemoryKB()

long SystemResourceMonitor::getTotalMemoryKB ( )

Get the total system memory in kilobytes.

Returns: Long representing the total memory in KB.

◆ getUsedMemoryKB()

long SystemResourceMonitor::getUsedMemoryKB ( )

Get the used system memory in kilobytes.

Returns: Long representing the used memory in KB.

◆ isMemoryLimitExceeded()

bool SystemResourceMonitor::isMemoryLimitExceeded ( )

Check if the current memory usage exceeds the set limit.

Returns: True if the limit is exceeded, false otherwise.

◆ parseMemInfo()

bool SystemResourceMonitor::parseMemInfo	(	const std::string &	key,
		long &	value )

Parse a specific key from /proc/meminfo.

Parameters

key	The key to search for in /proc/meminfo.
value	Reference to store the parsed value.

Returns: True if parsing was successful, false otherwise.

◆ setMemoryLimitKB()

bool SystemResourceMonitor::setMemoryLimitKB ( rlim_t limitInKB )

Set the memory limit for the process.