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Diffstat (limited to 'Doc/libselect.tex')
| -rw-r--r-- | Doc/libselect.tex | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/Doc/libselect.tex b/Doc/libselect.tex index 421d1aa..0b50101 100644 --- a/Doc/libselect.tex +++ b/Doc/libselect.tex @@ -12,14 +12,14 @@ corresponding string, as would be printed by the C function \code{perror()}. \end{excdesc} -\begin{funcdesc}{select}{iwtd\, owtd\, ewtd\, timeout} +\begin{funcdesc}{select}{iwtd\, owtd\, ewtd\optional{\, timeout}} This is a straightforward interface to the \UNIX{} \code{select()} system call. The first three arguments are lists of `waitable objects': either integers representing \UNIX{} file descriptors or objects with a parameterless method named \code{fileno()} returning such an integer. The three lists of waitable objects are for input, output and `exceptional conditions', respectively. Empty lists are -allowed. The optional last argument is a time-out specified as a +allowed. The optional \var{timeout} argument specifies a time-out as a floating point number in seconds. When the \var{timeout} argument is omitted the function blocks until at least one file descriptor is ready. A time-out value of zero specifies a poll and never blocks. |