POSIX real-time signals in Linux
1.0 Signals Signals are notifications delivered asynchronously to a process by the kernel. Signals are grouped in two categories. First, there are standard signals, which have been there since the…
POSIX Shared Memory in Linux
1.0 Shared Memory Shared memory is an inter process communication (IPC) mechanism in Linux and other UNIX-like systems. Based on input parameters, the kernel provides a (shared) memory segment to…
POSIX Threads Synchronization in C
1.0 POSIX Threads Synchronization POSIX Threads provide multiple flows of execution within a process. The threads have their own stacks but share the global data and the heap. So the…
POSIX Threads Programming in C
1.0 POSIX threads A process is an execution environment in an operating system. A process has code and data segments which are initialized from a program during an exec system…
POSIX Semaphores in Linux
1.0 Semaphores Semaphores are used for process and thread synchronization. Semaphores are clubbed with message queues and shared memory under the Interprocess Communication (IPC) facilities in Unix-like systems such as…
POSIX message queues in Linux
POSIX message queue calls for interprocess communication (IPC) between processes are explained with an example of server and client programs in C under Linux.