write()/read() system call
write() system call is used to write to a file descriptor. In other words write() can be used to write to any file (all hardware are also referred as file
Programs
Program for IPC using named pipes (mkfifo())
Program for IPC using named pipes (mkfifo()) The third method for IPC is using mkfifo() function. mkfifo() creates a named pipe which can be used exactly like a file. So, if you know how to read/write in a file this is a convenient method for IPC Syntax: #include<sys/types.h>#include<sys/stat.h>int mkfifo(const char *pathname, mode_t mode); mkfifo() makes …
Program for IPC using pipe() function
The second method for IPC is using the pipe() function. Before writing a program for IPC using pipe() function let us first understand its working. Syntax: #include<unistd.h>int pipe(int pipefd[2]); pipe() function creates a unidirectional pipe for IPC. On success it return two file descriptors pipefd[0] and pipefd[1]. pipefd[0] is the reading end of the pipe. …
Program for IPC using popen()
Program for IPC using pipes
Program for Process Synchronization using Semaphores
int shared=1; //shared variable
sem_t s; //semaphore variable
int main()
{
sem_init(&s,0,1)
Program to create an orphan process
An orphan process is a process whose parent has finished. Suppose P1 and P2 are two process such that P1 is the parent process and P2
Program to replace process image using execl( )
There is a family of function which can be used for replacing the current process with a new process. They differ in the number of arguments and the way they start a new process. The various functions are execl, execlp, execle, execv and execvp. In this post we will write a Program to replace process image using execl( …
Program for Process Synchronization using mutex locks
/* Program for process synchronization using locks Program create two threads: one to increment the value of a shared variable and second to decrement the value of shared variable. Both the threads make use of locks so that only one of the threads is executing in its critical section */ #include<pthread.h>#include<stdio.h>#include<unistd.h>void *fun1();void *fun2(); int shared=1; …
Program for Process Synchronization using mutex locks Read More »
Program to simulate Race Condition
Program to create two threads: one to increment the value of a shared variable and second to decrement the value of shared variable.
Program to create Threads in Linux
Program to create threads using C in Linux