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Annotation of 43BSDReno/old/man/wait3.2j, revision 1.1

1.1     ! root        1: .\" Copyright (c) 1980 Regents of the University of California.
        !             2: .\" All rights reserved.  The Berkeley software License Agreement
        !             3: .\" specifies the terms and conditions for redistribution.
        !             4: .\"
        !             5: .\"    @(#)wait3.2j    4.1 (Berkeley) 5/9/85
        !             6: .\"
        !             7: .TH WAIT3 2J
        !             8: .UC 4
        !             9: .SH NAME
        !            10: wait3 \- wait for process to terminate
        !            11: .SH SYNOPSIS
        !            12: .nf
        !            13: .B "#include <wait.h>"
        !            14: .B "#include <sys/vtimes.h>"
        !            15: .PP
        !            16: .B wait3(status, options, vtimep)
        !            17: .B union wait status;
        !            18: .B int options;
        !            19: .B struct vtimes *vtimep;
        !            20: .PP
        !            21: .B cc ... \-ljobs
        !            22: .fi
        !            23: .SH DESCRIPTION
        !            24: The
        !            25: .I status
        !            26: and
        !            27: .I option
        !            28: words are described by definitions and macros in the file
        !            29: <wait.h>; the union and its bitfield definitions and associated
        !            30: macros given there provide
        !            31: convenient and mnemonic access to the word of status returned by a
        !            32: .I wait3
        !            33: call.
        !            34: See this file for more information.
        !            35: .PP
        !            36: There are two
        !            37: .I options,
        !            38: which may be combined by
        !            39: .IR or ing
        !            40: them together.
        !            41: The first is WNOHANG which causes the
        !            42: .I wait3
        !            43: to not hang if there are no
        !            44: processes which wish to report status, rather returning a pid of 0 in this
        !            45: case as the result of the
        !            46: .I wait3.
        !            47: The second option is WUNTRACED which causes
        !            48: .I wait3
        !            49: to return information when children of the current process which are
        !            50: stopped but not traced (with
        !            51: .IR ptrace (2))
        !            52: because they received a SIGTTIN, SIGTTOU, SIGTSTP or SIGSTOP signal.
        !            53: See
        !            54: .IR sigsys (2))
        !            55: for a description of these signals.
        !            56: .PP
        !            57: The
        !            58: .I vtimep
        !            59: pointer is an optional structure where a
        !            60: .I vtimes
        !            61: structure is returned describing the resources used by the terminated
        !            62: process and all its children.  This may be given as \*(lq0\*(rq if the
        !            63: information is not desired.  Currently this information is not available
        !            64: for stopped processes.
        !            65: .SH "SEE ALSO"
        !            66: wait(2), exit(2), fork(2), sigsys(2)
        !            67: .SH DIAGNOSTICS
        !            68: Returns
        !            69: \-1 if there are no children not previously waited for, or 0 if the WNOHANG
        !            70: option is given and there are no stopped or exited children.
        !            71: .SH BUGS
        !            72: This call is peculiar to this version of UNIX.
        !            73: The options and specifications of this system call and even the call itself
        !            74: are subject to change.  It may be replaced by other facilities in future
        !            75: versions of the system.

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