diff options
Diffstat (limited to 'doc/DetachPids.3')
| -rw-r--r-- | doc/DetachPids.3 | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/doc/DetachPids.3 b/doc/DetachPids.3 index 23b16c5..818fb32 100644 --- a/doc/DetachPids.3 +++ b/doc/DetachPids.3 @@ -5,13 +5,13 @@ '\" See the file "license.terms" for information on usage and redistribution '\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. '\" -'\" RCS: @(#) $Id: DetachPids.3,v 1.2 1998/09/14 18:39:48 stanton Exp $ +'\" RCS: @(#) $Id: DetachPids.3,v 1.3 2001/04/03 14:53:45 andreas_kupries Exp $ '\" .so man.macros .TH Tcl_DetachPids 3 "" Tcl "Tcl Library Procedures" .BS .SH NAME -Tcl_DetachPids, Tcl_ReapDetachedProcs \- manage child processes in background +Tcl_DetachPids, Tcl_ReapDetachedProcs, Tcl_WaitPid \- manage child processes in background .SH SYNOPSIS .nf \fB#include <tcl.h>\fR @@ -19,14 +19,23 @@ Tcl_DetachPids, Tcl_ReapDetachedProcs \- manage child processes in background \fBTcl_DetachPids\fR(\fInumPids, pidPtr\fR) .sp \fBTcl_ReapDetachedProcs\fR() +.sp +Tcl_Pid +\fBTcl_WaitPid\fR(\fIpid, statPtr, options\fR) .SH ARGUMENTS .AS int *statusPtr .AP int numPids in Number of process ids contained in the array pointed to by \fIpidPtr\fR. .AP int *pidPtr in Address of array containing \fInumPids\fR process ids. +.AP Tcl_Pid pid in +The id of the process (pipe) to wait for. +.AP int* statPtr out +The result of waiting on a process (pipe). Either 0 or ECHILD. +.AP int options +The options controlling the wait. WNOHANG specifies not to wait when +checking the process. .BE - .SH DESCRIPTION .PP \fBTcl_DetachPids\fR and \fBTcl_ReapDetachedProcs\fR provide a @@ -57,6 +66,12 @@ However, if you call \fBTcl_DetachPids\fR in situations where the \fBexec\fR command may never get executed, you may wish to call \fBTcl_ReapDetachedProcs\fR from time to time so that background processes can be cleaned up. +.PP +\fBTcl_WaitPid\fR is a thin wrapper around the facilities provided by +the operating system to wait on the end of a spawned process and to +check a whether spawned process is still running. It is used by +\fBTcl_ReapDetachedProcs\fR and the channel system to portably access +the operating system. .SH KEYWORDS background, child, detach, process, wait |