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Annotation of researchv10dc/man/manb/wait3.2j, revision 1.1

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

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