Operating Systems Lab #06: Inter Process Communication

IPC is a mechanism that allows multiple processes to communicate and share resources with each other.

Shared memory is used when two or more processes need to share a large amount of data.

Semaphores and mutexes prevent race conditions when multiple processes access shared resources simultaneously.

<p>Pipes and FIFOs are used to communicate related processes with a common ancestry, while shared memory is used for sharing a large amount of data among processes.</p> Signup and view all the answers

<p>Signals are used to notify processes of events or errors.</p> Signup and view all the answers

<ol> <li>standard input (0), 2. standard output (1), 3. standard error (2)</li> </ol> Signup and view all the answers

<p>read() attempts to read up to count bytes of data from the file associated with the file descriptor fd and places them into the buffer starting at buf.</p> Signup and view all the answers

<p>write() writes up to count bytes from the buffer pointed to by buf to the file referred to by the file descriptor fd.</p> Signup and view all the answers

<p>If a read call returns 0, it means it had nothing to read; it reached the end of the file.</p> Signup and view all the answers

<p>If a write call returns -1, it means there has been an error in the write call.</p> Signup and view all the answers