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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2016-10-15 20:35:23 +0000 |
|---|---|---|
| committer | Laurent Bercot <ska-skaware@skarnet.org> | 2016-10-15 20:35:23 +0000 |
| commit | ff4ac0ca4b41deba5e3cb100bee23431c694963f (patch) | |
| tree | ee3a1f9f0b76a8e6aa8201d93ebda12ae48a9f36 /doc/wait.html | |
| parent | 86ae96a366603fdf6795692a9f089272bea424aa (diff) | |
| download | execline-ff4ac0ca4b41deba5e3cb100bee23431c694963f.tar.xz | |
Implement a timeout in wait
Diffstat (limited to 'doc/wait.html')
| -rw-r--r-- | doc/wait.html | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/doc/wait.html b/doc/wait.html index 94587a1..913e17c 100644 --- a/doc/wait.html +++ b/doc/wait.html @@ -29,7 +29,7 @@ </p> <pre> - wait [ -r ] { [ <em>pids...</em> ] } <em>prog...</em> + wait [ -I | -i ] [ -r | -t <em>timeout</em> ] { [ <em>pids...</em> ] } <em>prog...</em> </pre> <ul> @@ -45,9 +45,19 @@ empty list, it waits for every child process it has. </li> <h2> Options </h2> <ul> - <li> <tt>-r</tt> : reap mode. Do not pause until a child has -exited; only reap all pending zombies. The read block must be empty -for that option to be effective. </li> + <li> <tt>-r</tt> : equivalent to <tt>-t 0</tt>. Do not +pause: only reap processes that are already dead when <tt>wait</tt> +is invoked. </li> + <li> <tt>-t</tt> <em>timeout</em> : wait for a maximum +of <em>timeout</em> milliseconds. If there still are living processes +among <em>pids...</em> (or among <tt>wait</tt>'s children if +<em>pids...</em> is an empty list), after <em>timeout</em> +milliseconds, they will not be reaped. </li> + <li> <tt>-I</tt> : loose. If <tt>wait</tt> times out while +waiting for children to die, it will still +exec into <em>prog...</em>. This is the default. </li> + <li> <tt>-i</tt> : strict. If <tt>wait</tt> times out, it +will print an error message and exit 1. </li> </ul> </body> |