summaryrefslogtreecommitdiffstats
path: root/Doc/lib/libsched.tex
diff options
context:
space:
mode:
Diffstat (limited to 'Doc/lib/libsched.tex')
-rw-r--r--Doc/lib/libsched.tex97
1 files changed, 0 insertions, 97 deletions
diff --git a/Doc/lib/libsched.tex b/Doc/lib/libsched.tex
deleted file mode 100644
index 75bab7e..0000000
--- a/Doc/lib/libsched.tex
+++ /dev/null
@@ -1,97 +0,0 @@
-\section{\module{sched} ---
- Event scheduler}
-
-% LaTeXed and enhanced from comments in file
-
-\declaremodule{standard}{sched}
-\sectionauthor{Moshe Zadka}{moshez@zadka.site.co.il}
-\modulesynopsis{General purpose event scheduler.}
-
-The \module{sched} module defines a class which implements a general
-purpose event scheduler:\index{event scheduling}
-
-\begin{classdesc}{scheduler}{timefunc, delayfunc}
-The \class{scheduler} class defines a generic interface to scheduling
-events. It needs two functions to actually deal with the ``outside world''
---- \var{timefunc} should be callable without arguments, and return
-a number (the ``time'', in any units whatsoever). The \var{delayfunc}
-function should be callable with one argument, compatible with the output
-of \var{timefunc}, and should delay that many time units.
-\var{delayfunc} will also be called with the argument \code{0} after
-each event is run to allow other threads an opportunity to run in
-multi-threaded applications.
-\end{classdesc}
-
-Example:
-
-\begin{verbatim}
->>> import sched, time
->>> s=sched.scheduler(time.time, time.sleep)
->>> def print_time(): print "From print_time", time.time()
-...
->>> def print_some_times():
-... print time.time()
-... s.enter(5, 1, print_time, ())
-... s.enter(10, 1, print_time, ())
-... s.run()
-... print time.time()
-...
->>> print_some_times()
-930343690.257
-From print_time 930343695.274
-From print_time 930343700.273
-930343700.276
-\end{verbatim}
-
-
-\subsection{Scheduler Objects \label{scheduler-objects}}
-
-\class{scheduler} instances have the following methods:
-
-\begin{methoddesc}[scheduler]{enterabs}{time, priority, action, argument}
-Schedule a new event. The \var{time} argument should be a numeric type
-compatible with the return value of the \var{timefunc} function passed
-to the constructor. Events scheduled for
-the same \var{time} will be executed in the order of their
-\var{priority}.
-
-Executing the event means executing
-\code{\var{action}(*\var{argument})}. \var{argument} must be a
-sequence holding the parameters for \var{action}.
-
-Return value is an event which may be used for later cancellation of
-the event (see \method{cancel()}).
-\end{methoddesc}
-
-\begin{methoddesc}[scheduler]{enter}{delay, priority, action, argument}
-Schedule an event for \var{delay} more time units. Other then the
-relative time, the other arguments, the effect and the return value
-are the same as those for \method{enterabs()}.
-\end{methoddesc}
-
-\begin{methoddesc}[scheduler]{cancel}{event}
-Remove the event from the queue. If \var{event} is not an event
-currently in the queue, this method will raise a
-\exception{RuntimeError}.
-\end{methoddesc}
-
-\begin{methoddesc}[scheduler]{empty}{}
-Return true if the event queue is empty.
-\end{methoddesc}
-
-\begin{methoddesc}[scheduler]{run}{}
-Run all scheduled events. This function will wait
-(using the \function{delayfunc} function passed to the constructor)
-for the next event, then execute it and so on until there are no more
-scheduled events.
-
-Either \var{action} or \var{delayfunc} can raise an exception. In
-either case, the scheduler will maintain a consistent state and
-propagate the exception. If an exception is raised by \var{action},
-the event will not be attempted in future calls to \method{run()}.
-
-If a sequence of events takes longer to run than the time available
-before the next event, the scheduler will simply fall behind. No
-events will be dropped; the calling code is responsible for canceling
-events which are no longer pertinent.
-\end{methoddesc}