exits, _exits, atexit, atexitdont, terminate – terminate process, process cleanup
void _exits(char *msg)
void exits(char *msg)
is the conventional way to terminate a process.
is the underlying system call.
can never return.
conventionally includes a brief (maximum length
explanation of the reason for
exiting, or a null pointer or empty string to indicate normal termination.
The string is passed to the parent process, prefixed by the name and process
id of the exiting process, when the parent does a
as an argument,
calls in reverse order all the functions
as a function to be called by
It returns zero if it failed,
A typical use is to register a cleanup routine for an I/O package.
To simplify programs that fork or share memory,
only calls those
functions that were registered by the same
process as that calling
twice (or more) with the same function argument causes
to invoke the function twice (or more).
There is a limit to the number of exit functions
that will be recorded;
returns 0 if that limit has been reached.
cancels a previous registration of an exit function.