Init

.gitignore

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+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/master/VisualStudio.gitignore
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
+*.sln.docstates
+
+# User-specific files (MonoDevelop/Xamarin Studio)
+*.userprefs
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
+[Rr]elease/
+[Rr]eleases/
+x64/
+x86/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
+[Bb]in/
+[Oo]bj/
+[Ll]og/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
+[Tt]est[Rr]esult*/
+[Bb]uild[Ll]og.*
+
+# NUNIT
+*.VisualState.xml
+TestResult.xml
+
+# Build Results of an ATL Project
+[Dd]ebugPS/
+[Rr]eleasePS/
+dlldata.c
+
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
+project.lock.json
+project.fragment.lock.json
+artifacts/
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
+*_i.c
+*_p.c
+*_h.h
+*.ilk
+*.meta
+*.obj
+*.iobj
+*.pch
+*.pdb
+*.ipdb
+*.pgc
+*.pgd
+*.rsp
+*.sbr
+*.tlb
+*.tli
+*.tlh
+*.tmp
+*.tmp_proj
+*_wpftmp.csproj
+*.log
+*.vspscc
+*.vssscc
+.builds
+*.pidb
+*.svclog
+*.scc
+
+# Chutzpah Test files
+_Chutzpah*
+
+# Visual C++ cache files
+ipch/
+*.aps
+*.ncb
+*.opendb
+*.opensdf
+*.sdf
+*.cachefile
+*.VC.db
+*.VC.VC.opendb
+
+# Visual Studio profiler
+*.psess
+*.vsp
+*.vspx
+*.sap
+
+# Visual Studio Trace Files
+*.e2e
+
+# TFS 2012 Local Workspace
+$tf/
+
+# Guidance Automation Toolkit
+*.gpState
+
+# ReSharper is a .NET coding add-in
+_ReSharper*/
+*.[Rr]e[Ss]harper
+*.DotSettings.user
+
+# JustCode is a .NET coding add-in
+.JustCode
+
+# TeamCity is a build add-in
+_TeamCity*
+
+# DotCover is a Code Coverage Tool
+*.dotCover
+
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
+# NCrunch
+_NCrunch_*
+.*crunch*.local.xml
+nCrunchTemp_*
+
+# MightyMoose
+*.mm.*
+AutoTest.Net/
+
+# Web workbench (sass)
+.sass-cache/
+
+# Installshield output folder
+[Ee]xpress/
+
+# DocProject is a documentation generator add-in
+DocProject/buildhelp/
+DocProject/Help/*.HxT
+DocProject/Help/*.HxC
+DocProject/Help/*.hhc
+DocProject/Help/*.hhk
+DocProject/Help/*.hhp
+DocProject/Help/Html2
+DocProject/Help/html
+
+# Click-Once directory
+publish/
+
+# Publish Web Output
+*.[Pp]ublish.xml
+*.azurePubxml
+# Note: Comment the next line if you want to checkin your web deploy settings,
+# but database connection strings (with potential passwords) will be unencrypted
+*.pubxml
+*.publishproj
+
+# Microsoft Azure Web App publish settings. Comment the next line if you want to
+# checkin your Azure Web App publish settings, but sensitive information contained
+# in these scripts will be unencrypted
+PublishScripts/
+
+# NuGet Packages
+*.nupkg
+# The packages folder can be ignored because of Package Restore
+**/[Pp]ackages/*
+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
+# Uncomment if necessary however generally it will be regenerated when needed
+#!**/[Pp]ackages/repositories.config
+# NuGet v3's project.json files produces more ignorable files
+*.nuget.props
+*.nuget.targets
+
+# Microsoft Azure Build Output
+csx/
+*.build.csdef
+
+# Microsoft Azure Emulator
+ecf/
+rcf/
+
+# Windows Store app package directories and files
+AppPackages/
+BundleArtifacts/
+Package.StoreAssociation.xml
+_pkginfo.txt
+*.appx
+
+# Visual Studio cache files
+# files ending in .cache can be ignored
+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
+ClientBin/
+~$*
+*~
+*.dbmdl
+*.dbproj.schemaview
+*.jfm
+*.pfx
+*.publishsettings
+orleans.codegen.cs
+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
+_UpgradeReport_Files/
+Backup*/
+UpgradeLog*.XML
+UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
+
+# SQL Server files
+*.mdf
+*.ldf
+*.ndf
+
+# Business Intelligence projects
+*.rdl.data
+*.bim.layout
+*.bim_*.settings
+*.rptproj.rsuser
+*- Backup*.rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
+
+# Node.js Tools for Visual Studio
+.ntvs_analysis.dat
+node_modules/
+
+# Visual Studio 6 build log
+*.plg
+
+# Visual Studio 6 workspace options file
+*.opt
+
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
+**/*.DesktopClient/ModelManifest.xml
+**/*.Server/GeneratedArtifacts
+**/*.Server/ModelManifest.xml
+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# JetBrains Rider
+.idea/
+*.sln.iml
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb

common.c

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+#include "common.h"
+
+// Prints the time
+void printTimeStamp(FILE *fp)
+{
+    time_t ltime;
+    struct tm result;
+    char stime[32];
+    bzero(stime, sizeof(stime));
+
+    ltime = time(NULL);
+    localtime_r(&ltime, &result);
+    asctime_r(&result, stime);
+    fprintf(fp, "\nTimeStamp: %s\n", stime);
+}

common.h

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+#ifndef COMMON_H
+#define COMMON_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <strings.h>
+#include <time.h>
+#include <unistd.h>
+
+void printTimeStamp(FILE *fp);
+
+#define BUFFER_SIZE 4096
+
+#endif /* COMMON_H */

main.c

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+#include "common.h"
+#include <signal.h>
+#include "monitor.h"
+
+volatile sig_atomic_t sigint_received = 0;
+
+void sigint_handler(int a)
+{
+    sigint_received = 1;
+}
+
+int main(int argc, char *argv[])
+{
+    if (argc < 2)
+    {
+        printf("Name of the program is missing\n");
+        printf("Usage: <name of the program>\n");
+        return 2;
+    }
+
+    struct sigaction act;
+    act.sa_handler = sigint_handler;
+    sigaction(SIGINT, &act, NULL);
+
+    setup(argv[1]);
+
+    while (!sigint_received)
+    {
+        analyse();
+        sleep(10);
+    }
+
+    printf("Normal shutdown\n");
+    return 0;
+}

monitor.c

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+#include "common.h"
+#include <errno.h>
+#include "monitor.h"
+#include "utils.h"
+
+#include <sys/types.h>
+#include <signal.h>
+
+#define MAX_MEMORY 1048576
+#define PROGRAM_NAME 255
+#define MAX_TRACK_SIZE 30
+
+FILE *popen(const char *command, const char *mode);
+int pclose(FILE *stream);
+char *strerror(int errnum);
+
+void checkStatus(FILE *file, int *currRealMem, int *peakRealMem,
+                 int *currVirtMem, int *peakVirtMem)
+{
+
+    char result[BUFFER_SIZE];
+    bzero(result, sizeof(result));
+
+    if (file == NULL)
+    {
+        perror("popen");
+        exit(EXIT_FAILURE);
+    }
+
+    while (fscanf(file, " %1023s", result) == 1)
+    {
+        if (strcmp(result, "VmRSS:") == 0)
+        {
+            fscanf(file, " %d", currRealMem);
+        }
+
+        if (strcmp(result, "VmHWM:") == 0)
+        {
+            fscanf(file, " %d", peakRealMem);
+        }
+
+        if (strcmp(result, "VmSize:") == 0)
+        {
+            fscanf(file, " %d", currVirtMem);
+        }
+
+        if (strcmp(result, "VmPeak:") == 0)
+        {
+            fscanf(file, " %d", peakVirtMem);
+        }
+    }
+}
+
+void isProcessWild(int currRealMem, int peakRealMem,
+                   int currVirtMem, int peakVirtMem, int ID)
+{
+    // Logs to a file in case something is up
+    if (currRealMem > MAX_MEMORY)
+    {
+        FILE *fp;
+        fp = fopen("Diavolo.txt", "a");
+        printTimeStamp(fp);
+        fprintf(fp, "WARNING: Exceeded %d KiB of Real Memory for process ID: %d\n", MAX_MEMORY, ID);
+        fprintf(fp, "Process ID: %d\ncurrRealMem:%d KiB\npeakRealMem:%d KiB\ncurrVirtMem:%d KiB\npeakVirtMem:%d KiB\n", ID, currRealMem, peakRealMem, currVirtMem, peakVirtMem);
+        fclose(fp);
+        // Sends a polite request to terminate
+        int result = kill(ID, SIGTERM);
+        if (result)
+        {
+            printf("Error while terminating process: %d\n", ID);
+            printf("Error message: %s\n", strerror(errno));
+        }
+    }
+}
+
+static processID[MAX_TRACK_SIZE] = {0};
+
+void setup(const char *pid)
+{
+    char *command = va("pgrep %s", pid);
+    FILE *file = popen(command, "r");
+
+    if (file == NULL)
+    {
+        perror("popen");
+        exit(EXIT_FAILURE);
+    }
+
+    char result[BUFFER_SIZE];
+    bzero(result, sizeof(result));
+    int i = 0;
+
+    while (fgets(result, BUFFER_SIZE, file))
+    {
+        printf("Process ID: %s", result);
+        processID[i] = atoi(result);
+        i++;
+
+        if (i > MAX_TRACK_SIZE - 1)
+        {
+            printf("Too many processes found\n");
+            break;
+        }
+    }
+
+    pclose(file);
+}
+
+void analyse()
+{
+    int i;
+    FILE *status;
+    int currRealMem = 0, peakRealMem = 0, currVirtMem = 0, peakVirtMem = 0;
+
+    for (i = 0; i < MAX_TRACK_SIZE && processID[i] != 0; i++)
+    {
+        char *command = va("cat /proc/%d/status", processID[i]);
+        status = popen(command, "r");
+        if (file == NULL)
+        {
+            perror("popen");
+            exit(EXIT_FAILURE);
+        }
+
+        checkStatus(status, &currRealMem, &peakRealMem, &currVirtMem, &peakVirtMem);
+        isProcessWild(currRealMem, peakRealMem, currVirtMem, peakVirtMem, processID[i]);
+        pclose(status);
+    }
+}

monitor.h

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+#ifndef MONITOR_H
+#define MONITOR_H
+
+void setup(const char *pid);
+void analyse();
+
+#endif /* MONITOR_H */

utils.c

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+#include "common.h"
+#include "utils.h"
+
+#define VA_BUFFER_COUNT 4
+#define VA_BUFFER_SIZE 4096
+
+char *va(const char *fmt, ...)
+{
+    static char g_vaBuffer[VA_BUFFER_COUNT][VA_BUFFER_SIZE];
+    static int g_vaNextBufferIndex = 0;
+
+    va_list ap;
+    char *dest = &g_vaBuffer[g_vaNextBufferIndex][0];
+    bzero(dest, VA_BUFFER_SIZE);
+    g_vaNextBufferIndex = (g_vaNextBufferIndex + 1) % VA_BUFFER_COUNT;
+    va_start(ap, fmt);
+    vsnprintf(dest, VA_BUFFER_SIZE, fmt, ap);
+    va_end(ap);
+    dest[VA_BUFFER_SIZE - 1] = '\0';
+
+    return dest;
+}

utils.h

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+#ifndef UTILS_H
+#define UTILS_H
+
+char *va(const char *fmt, ...);
+
+#endif /* UTILS_H */