<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <!-- Generated by HsColour, http://www.cs.york.ac.uk/fp/darcs/hscolour/ --> <title>Control/Concurrent/STM/TVar.hs</title> <link type='text/css' rel='stylesheet' href='hscolour.css' /> </head> <body> <pre><a name="line-1"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-2"></a><span class='hs-comment'>-- |</span> <a name="line-3"></a><span class='hs-comment'>-- Module : Control.Concurrent.STM.TVar</span> <a name="line-4"></a><span class='hs-comment'>-- Copyright : (c) The University of Glasgow 2004</span> <a name="line-5"></a><span class='hs-comment'>-- License : BSD-style (see the file libraries/base/LICENSE)</span> <a name="line-6"></a><span class='hs-comment'>-- </span> <a name="line-7"></a><span class='hs-comment'>-- Maintainer : libraries@haskell.org</span> <a name="line-8"></a><span class='hs-comment'>-- Stability : experimental</span> <a name="line-9"></a><span class='hs-comment'>-- Portability : non-portable (requires STM)</span> <a name="line-10"></a><span class='hs-comment'>--</span> <a name="line-11"></a><span class='hs-comment'>-- TVar: Transactional variables</span> <a name="line-12"></a><span class='hs-comment'>--</span> <a name="line-13"></a><span class='hs-comment'>-----------------------------------------------------------------------------</span> <a name="line-14"></a> <a name="line-15"></a><span class='hs-keyword'>module</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Concurrent</span><span class='hs-varop'>.</span><span class='hs-conid'>STM</span><span class='hs-varop'>.</span><span class='hs-conid'>TVar</span> <span class='hs-layout'>(</span> <a name="line-16"></a> <span class='hs-comment'>-- * TVars</span> <a name="line-17"></a> <span class='hs-conid'>TVar</span><span class='hs-layout'>,</span> <a name="line-18"></a> <span class='hs-varid'>newTVar</span><span class='hs-layout'>,</span> <a name="line-19"></a> <span class='hs-varid'>readTVar</span><span class='hs-layout'>,</span> <a name="line-20"></a> <span class='hs-varid'>writeTVar</span><span class='hs-layout'>,</span> <a name="line-21"></a> <span class='hs-varid'>newTVarIO</span><span class='hs-layout'>,</span> <a name="line-22"></a> <span class='hs-varid'>readTVarIO</span><span class='hs-layout'>,</span> <a name="line-23"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span> <a name="line-24"></a> <span class='hs-varid'>registerDelay</span> <a name="line-25"></a><span class='hs-cpp'>#endif</span> <a name="line-26"></a> <span class='hs-layout'>)</span> <span class='hs-keyword'>where</span> <a name="line-27"></a> <a name="line-28"></a><span class='hs-cpp'>#ifdef __GLASGOW_HASKELL__</span> <a name="line-29"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>GHC</span><span class='hs-varop'>.</span><span class='hs-conid'>Conc</span> <a name="line-30"></a><span class='hs-cpp'>#else</span> <a name="line-31"></a><span class='hs-keyword'>import</span> <span class='hs-conid'>Control</span><span class='hs-varop'>.</span><span class='hs-conid'>Sequential</span><span class='hs-varop'>.</span><span class='hs-conid'>STM</span> <a name="line-32"></a><span class='hs-cpp'>#endif</span> <a name="line-33"></a> <a name="line-34"></a><span class='hs-cpp'>#if ! (MIN_VERSION_base(4,2,0))</span> <a name="line-35"></a><a name="readTVarIO"></a><span class='hs-definition'>readTVarIO</span> <span class='hs-keyglyph'>=</span> <span class='hs-varid'>atomically</span> <span class='hs-varop'>.</span> <span class='hs-varid'>readTVar</span> <a name="line-36"></a><span class='hs-cpp'>#endif</span> </pre></body> </html>
