EXIT(2) BSD EXIT(2)
NAME
_exit - terminate a process
SYNOPSIS
_exit(status)
int status;
DESCRIPTION
The _exit system call terminates a process with the following
consequences:
⊕ All of the descriptors open in the calling process are closed. This
may entail delays, for example, waiting for output to drain; a process
in this state can't be killed, as it is already dying.
⊕ If the parent process of the calling process is executing a wait or is
interested in the SIGCHLD signal, then it is notified of the calling
process' termination, and the low-order eight bits of status are made
available to it. See wait(2).
⊕ The parent process ID of all of the calling process' existing child
processes are also set to 1. This means that the initialization
process (see intro(2)) inherits each of these processes as well. Any
stopped children are restarted with a hangup signal (SIGHUP).
Most C programs call the library routine exit(3), which performs clean-up
actions in the standard I/O library before calling _exit.
SEE ALSO
fork(2), sigvec(2), wait(2), exit(3)
DIAGNOSTICS
This call never returns.