Difference between Mutex and Semaphore
Besides the better readability, the code for mutex is smaller and slightly faster than the semaphore implementation. … Read more
Operating System Concepts
What is Zombie process and How to create zombie process in Linux ?
Zombie process is the process which died immediately and whose parent didn’t cared to handled the status … Read more
C program to read mac address using WiFi interface name
If you need to get the mac address of certain wifi interface using C program, you can … Read more
What is Linux Out-Of-Memory OOM Killer ?
Major distribution kernels set the default value of /proc/sys/vm/overcommit_memory to zero, which means that processes can request … Read more
How to avoid a process from being killed in case of Out of Memory ?
In our previous post, we understood “What is Out of Memory Killer ?” In this post, we … Read more
How to avoid zombie process in Linux ?
Zombie process is the process which dies/finishes immediately and whose parent didn’t cares to handle the status … Read more
How to create process in Linux using fork system call ?
Below is simple process creation program using fork system call, fork return child’s process Id in main/parent … Read more
C program to check total and free RAM memory in Linux
Following C program helps you to identify what is the total and free memory / RAM available … Read more
Example for using shared data between two Unix threads
Following is the simple example to show, how we can create two threads at a time and … Read more
How to use pthread_mutex_lock to prevent modification of shared variables ?
Following is the simple example to show, how we can create two threads at a time and … Read more