usr/man/cat2/exit.0



EXIT(2)             UNIX Programmer's Manual              EXIT(2)


N\bNA\bAM\bME\bE
     _exit - terminate a process

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
     _\b_e\bex\bxi\bit\bt(\b(s\bst\bta\bat\btu\bus\bs)\b)
     i\bin\bnt\bt s\bst\bta\bat\btu\bus\bs;\b;

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
     __\be_\bx_\bi_\bt 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 may not be killed,
     as it is already dying.

     If the parent process of the calling process is executing a
     _\bw_\ba_\bi_\bt or is interested in the SIGCHLD signal, then it is
     notified of the calling process's termination and the low-
     order eight bits of _\bs_\bt_\ba_\bt_\bu_\bs are made available to it; see
     _\bw_\ba_\bi_\bt(2).

     The parent process ID of all of the calling process's exist-
     ing child processes are also set to 1.  This means that the
     initialization process (see _\bi_\bn_\bt_\br_\bo(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 _\be_\bx_\bi_\bt(3), which per-
     forms cleanup actions in the standard I/O library before
     calling __\be_\bx_\bi_\bt.

R\bRE\bET\bTU\bUR\bRN\bN V\bVA\bAL\bLU\bUE\bE
     This call never returns.

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
     fork(2), sigvec(2), wait(2), exit(3)


Printed 7/9/88            May 22, 1986                          1