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author | Fred Drake <fdrake@acm.org> | 1998-05-07 01:49:07 (GMT) |
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committer | Fred Drake <fdrake@acm.org> | 1998-05-07 01:49:07 (GMT) |
commit | cda63cc875f54b047018cad362aa23d5493b97f3 (patch) | |
tree | f43f888293bb4046a7622dffefd561b669e993c2 /Doc/libqueue.tex | |
parent | bbe33c559403c7e06642111c494bd32d9abe528f (diff) | |
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Relocating file to Doc/lib/
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-rw-r--r-- | Doc/libqueue.tex | 68 |
1 files changed, 0 insertions, 68 deletions
diff --git a/Doc/libqueue.tex b/Doc/libqueue.tex deleted file mode 100644 index 680238d..0000000 --- a/Doc/libqueue.tex +++ /dev/null @@ -1,68 +0,0 @@ -\section{Standard Module \module{Queue}} -\stmodindex{Queue} -\label{module-Queue} - - -The \module{Queue} module implements a multi-producer, multi-consumer -FIFO queue. It is especially useful in threads programming when -information must be exchanged safely between multiple threads. The -\class{Queue} class in this module implements all the required locking -semantics. It depends on the availability of thread support in -Python. - -The \module{Queue} module defines the following class and exception: - - -\begin{classdesc}{Queue}{maxsize} -Constructor for the class. \var{maxsize} is an integer that sets the -upperbound limit on the number of items that can be placed in the -queue. Insertion will block once this size has been reached, until -queue items are consumed. If \var{maxsize} is less than or equal to -zero, the queue size is infinite. -\end{classdesc} - -\begin{excdesc}{Empty} -Exception raised when non-blocking get (e.g. \method{get_nowait()}) is -called on a \class{Queue} object which is empty, or for which the -emptyiness cannot be determined (i.e. because the appropriate locks -cannot be acquired). -\end{excdesc} - -\subsection{Queue Objects} -\label{QueueObjects} - -Class \class{Queue} implements queue objects and has the methods -described below. This class can be derived from in order to implement -other queue organizations (e.g. stack) but the inheritable interface -is not described here. See the source code for details. The public -methods are: - -\begin{methoddesc}{qsize}{} -Returns the approximate size of the queue. Because of multithreading -semantics, this number is not reliable. -\end{methoddesc} - -\begin{methoddesc}{empty}{} -Returns \code{1} if the queue is empty, \code{0} otherwise. Because -of multithreading semantics, this is not reliable. -\end{methoddesc} - -\begin{methoddesc}{full}{} -Returns \code{1} if the queue is full, \code{0} otherwise. Because of -multithreading semantics, this is not reliable. -\end{methoddesc} - -\begin{methoddesc}{put}{item} -Puts \var{item} into the queue. -\end{methoddesc} - -\begin{methoddesc}{get}{} -Gets and returns an item from the queue, blocking if necessary until -one is available. -\end{methoddesc} - -\begin{methoddesc}{get_nowait}{} -Gets and returns an item from the queue if one is immediately -available. Raises an \exception{Empty} exception if the queue is -empty or if the queue's emptiness cannot be determined. -\end{methoddesc} |