wait.3f

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· 3F 代码 · 共 33 行

.\" SCCSID: @(#)wait.3f	8.1	9/11/90
.TH wait 3f VAX "" Unsupported
.SH Name
wait \- wait for a process to terminate
.SH Syntax
.B integer function wait (status)
.br
.B integer status
.SH Description
.NXR "wait subroutine (FORTRAN)"
.NXR "process" "suspending"
The
.PN wait
routine causes its caller to be suspended 
until a signal is received or one of
its child processes terminates.
If any child has terminated since the last
.PN wait ,
return is immediate; if there are no children, return is immediate
with an error code.
.PP
If the returned value is positive, it is the process ID of the child and
.I status
is its termination status.  For further information, see
.MS wait 2 .
If the returned value is negative,
it is the negation of a system error code.
.SH Files
.ie \nM /usr/ucb/lib/libU77.a
.el /usr/lib/libU77.a
.SH See Also
wait(2), kill(3f), perror(3f), signal(3f)