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This commit is contained in:
Michael Kerrisk 2007-12-25 16:16:06 +00:00
parent 863b571e68
commit a325cc6045
1 changed files with 13 additions and 8 deletions
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21
man2/wait.2
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@ -136,7 +136,7 @@ value of
The value of The value of
.I options .I options
is an OR of zero or more of the following constants: is an OR of zero or more of the following constants:
.TP .TP 12
.B WNOHANG .B WNOHANG
return immediately if no child has exited. return immediately if no child has exited.
.TP .TP
@ -263,7 +263,7 @@ is ignored.
The child state changes to wait for are specified by ORing The child state changes to wait for are specified by ORing
one or more of the following flags in one or more of the following flags in
.IR options : .IR options :
.TP .TP 12
.B WEXITED .B WEXITED
Wait for children that have terminated. Wait for children that have terminated.
.TP .TP
@ -277,7 +277,7 @@ resumed by delivery of
.PP .PP
The following flags may additionally be ORed in The following flags may additionally be ORed in
.IR options : .IR options :
.TP .TP 12
.B WNOHANG .B WNOHANG
As for As for
.BR waitpid (). .BR waitpid ().
@ -292,15 +292,19 @@ fills in the following fields of the
.I siginfo_t .I siginfo_t
structure pointed to by structure pointed to by
.IR infop : .IR infop :
.IP \fIsi_pid\fP .TP 12
\fIsi_pid\fP
The process ID of the child. The process ID of the child.
.IP \fIsi_uid\fP .TP
\fIsi_uid\fP
The real user ID of the child. The real user ID of the child.
(This field is not set on most other implementations.) (This field is not set on most other implementations.)
.IP \fIsi_signo\fP .TP
\fIsi_signo\fP
Always set to Always set to
.BR SIGCHLD . .BR SIGCHLD .
.IP \fIsi_status\fP .TP
\fIsi_status\fP
Either the exit status of the child, as given to Either the exit status of the child, as given to
.BR _exit (2) .BR _exit (2)
(or (or
@ -309,7 +313,8 @@ or the signal that caused the child to terminate, stop, or continue.
The The
.I si_code .I si_code
field can be used to determine how to interpret this field. field can be used to determine how to interpret this field.
.IP \fIsi_code\fP .TP
\fIsi_code\fP
Set to one of: Set to one of:
.B CLD_EXITED .B CLD_EXITED
(child called (child called