Lab8

.vscode/tasks.json

@@ -0,0 +1,28 @@
+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: gcc build active file",
+            "command": "/usr/bin/gcc",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}/${fileBasenameNoExtension}"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "Task generated by Debugger."
+        }
+    ],
+    "version": "2.0.0"
+}

CMakeLists.txt

@@ -8,5 +8,4 @@ SET(GCC_COVERAGE_COMPILE_FLAGS "-pthread")
 
 
 add_executable(OS
-        Lab6/agent.c
+        Lab8/ex1.c)
-        Lab6/agent.c)

Lab8/ex1.c

@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <unistd.h>
+#include "string.h"
+
+int main() {    
+    char* pass = "";
+
+    size_t pid = getpid();
+    printf("\n%d\n", pid);
+    while (1) {}
+    
+}
+
+
+
+/*
+Create a simple program which stores only a message in the heap.
+Keep the program running and access the maps file at
+/proc/{pid}/maps. Print the content of the file to stdout. Locate
+the start and end addresses of the heap.
+You can access the virtual memory of the process whose id is pid
+at /proc/{pid}/mem. Try to access the file using less command.
+Access the heap of the program using 
+Navigate the heap memory file till finding the message. Locate the
+page number where the message is stored and its address.
+Access the file /proc/{pid}/smaps and specify what the total size
+of pages of the heap. What is the file /proc/{pid}/map files?
+Use the command pmap to check the memory mappings of the
+process.
+*/