painless/System_8hpp_source.html

#pragma once


#include <atomic>

#include <chrono>

#include <string>

#include <sys/resource.h>


namespace SystemResourceMonitor {

extern std::atomic<rlim_t> memoryLimitKB;


extern const std::chrono::steady_clock::time_point startTime;


double

getRelativeTimeSeconds();


double

getAbsoluteTimeSeconds();


bool

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


long

getTotalMemoryKB();


long

getUsedMemoryKB();


long

getFreeMemoryKB();


long

getAvailableMemoryKB();


bool

setMemoryLimitKB(rlim_t limitInKB);


rlim_t

getMemoryLimitKB();


bool

isMemoryLimitExceeded();


void

printProcessResourceUsage();

}


SystemResourceMonitor
A set of utilities for monitoring and managing system resources.
Definition System.hpp:24

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

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

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

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

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

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

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

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

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

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

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

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

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