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| author | Michele Calgaro <michele.calgaro@yahoo.it> | 2024-06-30 12:33:25 +0900 |
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| committer | Michele Calgaro <michele.calgaro@yahoo.it> | 2024-06-30 12:33:25 +0900 |
| commit | aeefd3fe454bfaed093355278b1e2caa84bfd77a (patch) | |
| tree | 2d2b7ae985b004b3114ad2b25a879797be18d427 /doc/html/ntqthreadstorage.html | |
| parent | 2cbcca0db1343e1c40e52af729a5eb34ca8a7e37 (diff) | |
| download | tqt3-aeefd3fe454bfaed093355278b1e2caa84bfd77a.tar.gz tqt3-aeefd3fe454bfaed093355278b1e2caa84bfd77a.zip | |
Rename threading nt* related files to equivalent tq*
Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>
Diffstat (limited to 'doc/html/ntqthreadstorage.html')
| -rw-r--r-- | doc/html/ntqthreadstorage.html | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/doc/html/ntqthreadstorage.html b/doc/html/ntqthreadstorage.html deleted file mode 100644 index c18111bd..00000000 --- a/doc/html/ntqthreadstorage.html +++ /dev/null @@ -1,189 +0,0 @@ -<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> -<!-- /home/espenr/tmp/qt-3.3.8-espenr-2499/qt-x11-free-3.3.8/src/tools/qthreadstorage_unix.cpp:163 --> -<html> -<head> -<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> -<title>TQThreadStorage Class</title> -<style type="text/css"><!-- -fn { margin-left: 1cm; text-indent: -1cm; } -a:link { color: #004faf; text-decoration: none } -a:visited { color: #672967; text-decoration: none } -body { background: #ffffff; color: black; } ---></style> -</head> -<body> - -<table border="0" cellpadding="0" cellspacing="0" width="100%"> -<tr bgcolor="#E5E5E5"> -<td valign=center> - <a href="index.html"> -<font color="#004faf">Home</font></a> - | <a href="classes.html"> -<font color="#004faf">All Classes</font></a> - | <a href="mainclasses.html"> -<font color="#004faf">Main Classes</font></a> - | <a href="annotated.html"> -<font color="#004faf">Annotated</font></a> - | <a href="groups.html"> -<font color="#004faf">Grouped Classes</font></a> - | <a href="functions.html"> -<font color="#004faf">Functions</font></a> -</td> -<td align="right" valign="center"><img src="logo32.png" align="right" width="64" height="32" border="0"></td></tr></table><h1 align=center>TQThreadStorage Class Reference</h1> - -<p>The TQThreadStorage class provides per-thread data storage. -<a href="#details">More...</a> -<p>All the functions in this class are <a href="threads.html#threadsafe">thread-safe</a> when TQt is built with thread support.</p> -<p><tt>#include <<a href="qthreadstorage-h.html">ntqthreadstorage.h</a>></tt> -<p><a href="qthreadstorage-members.html">List of all member functions.</a> -<h2>Public Members</h2> -<ul> -<li class=fn><a href="#TQThreadStorage"><b>TQThreadStorage</b></a> ()</li> -<li class=fn><a href="#~TQThreadStorage"><b>~TQThreadStorage</b></a> ()</li> -<li class=fn>bool <a href="#hasLocalData"><b>hasLocalData</b></a> () const</li> -<li class=fn>T & <a href="#localData"><b>localData</b></a> ()</li> -<li class=fn>T <a href="#localData-2"><b>localData</b></a> () const</li> -<li class=fn>void <a href="#setLocalData"><b>setLocalData</b></a> ( T data )</li> -</ul> -<hr><a name="details"></a><h2>Detailed Description</h2> - - -The TQThreadStorage class provides per-thread data storage. -<p> - - -<p> TQThreadStorage is a template class that provides per-thread data -storage. -<p> <em>Note that due to compiler limitations, TQThreadStorage can only store pointers.</em> -<p> The <a href="#setLocalData">setLocalData</a>() function stores a single thread-specific value -for the calling thread. The data can be accessed later using the -<a href="#localData">localData</a>() functions. TQThreadStorage takes ownership of the -data (which must be created on the heap with <em>new</em>) and deletes -it when the thread exits (either normally or via termination). -<p> The <a href="#hasLocalData">hasLocalData</a>() function allows the programmer to determine if -data has previously been set using the setLocalData() function. -This is useful for lazy initializiation. -<p> For example, the following code uses TQThreadStorage to store a -single cache for each thread that calls the <em>cacheObject()</em> and -<em>removeFromCache()</em> functions. The cache is automatically -deleted when the calling thread exits (either normally or via -termination). -<p> <pre> - TQThreadStorage<TQCache<SomeClass> *> caches; - - void cacheObject( const <a href="tqstring.html">TQString</a> &key, SomeClass *object ) - { - if ( ! caches.hasLocalData() ) - caches.setLocalData( new <a href="ntqcache.html">TQCache</a><SomeClass> ); - - caches.localData()->insert( key, object ); - } - - void removeFromCache( const <a href="tqstring.html">TQString</a> &key ) - { - if ( ! caches.hasLocalData() ) - return; // nothing to do - - caches.localData()->remove( key ); - } - </pre> - -<p> <h3> Caveats -</h3> -<a name="1"></a><p> <ul> -<p> <li> As noted above, TQThreadStorage can only store pointers due to -compiler limitations. Support for value-based objects will be -added when the majority of compilers are able to support partial -template specialization. -<p> <li> The <a href="#~TQThreadStorage">destructor</a> does <em>not</em> -delete per-thread data. TQThreadStorage only deletes per-thread -data when the thread exits or when <a href="#setLocalData">setLocalData</a>() is called -multiple times. -<p> <li> TQThreadStorage can only be used with threads started with -<a href="ntqthread.html">TQThread</a>. It <em>cannot</em> be used with threads started with -platform-specific APIs. -<p> <li> As a corollary to the above, platform-specific APIs cannot be -used to exit or terminate a TQThread using TQThreadStorage. Doing so -will cause all per-thread data to be leaked. See <a href="ntqthread.html#exit">TQThread::exit</a>() -and <a href="ntqthread.html#terminate">TQThread::terminate</a>(). -<p> <li> TQThreadStorage <em>can</em> be used to store data for the <em>main()</em> -thread <em>after</em> <a href="ntqapplication.html">TQApplication</a> has been constructed. TQThreadStorage -deletes all data set for the <em>main()</em> thread when TQApplication is -destroyed, regardless of whether or not the <em>main()</em> thread has -actually finished. -<p> <li> The implementation of TQThreadStorage limits the total number of -TQThreadStorage objects to 256. An unlimited number of threads -can store per-thread data in each TQThreadStorage object. -<p> </ul> -<p>See also <a href="environment.html">Environment Classes</a> and <a href="thread.html">Threading</a>. - -<hr><h2>Member Function Documentation</h2> -<h3 class=fn><a name="TQThreadStorage"></a>TQThreadStorage::TQThreadStorage () -</h3> - -<p> Constructs a new per-thread data storage object. - -<h3 class=fn><a name="~TQThreadStorage"></a>TQThreadStorage::~TQThreadStorage () -</h3> - -<p> Destroys the per-thread data storage object. -<p> Note: The per-thread data stored is <em>not</em> deleted. Any data left -in TQThreadStorage is leaked. Make sure that all threads using -TQThreadStorage have exited before deleting the TQThreadStorage. -<p> <p>See also <a href="#hasLocalData">hasLocalData</a>(). - -<h3 class=fn>bool <a name="hasLocalData"></a>TQThreadStorage::hasLocalData () const -</h3> - -<p> Returns TRUE if the calling thread has non-zero data available; -otherwise returns FALSE. -<p> <p>See also <a href="#localData">localData</a>(). - -<h3 class=fn>T & <a name="localData"></a>TQThreadStorage::localData () -</h3> - -<p> Returns a reference to the data that was set by the calling -thread. -<p> Note: TQThreadStorage can only store pointers. This function -returns a <em>reference</em> to the pointer that was set by the calling -thread. The value of this reference is 0 if no data was set by -the calling thread, -<p> <p>See also <a href="#hasLocalData">hasLocalData</a>(). - -<h3 class=fn>T <a name="localData-2"></a>TQThreadStorage::localData () const -</h3> - -This is an overloaded member function, provided for convenience. It behaves essentially like the above function. -<p> Returns a copy of the data that was set by the calling thread. -<p> Note: TQThreadStorage can only store pointers. This function -returns a pointer to the data that was set by the calling thread. -If no data was set by the calling thread, this function returns 0. -<p> <p>See also <a href="#hasLocalData">hasLocalData</a>(). - -<h3 class=fn>void <a name="setLocalData"></a>TQThreadStorage::setLocalData ( T data ) -</h3> - -<p> Sets the local data for the calling thread to <em>data</em>. It can be -accessed later using the <a href="#localData">localData</a>() functions. -<p> If <em>data</em> is 0, this function deletes the previous data (if -any) and returns immediately. -<p> If <em>data</em> is non-zero, TQThreadStorage takes ownership of the <em>data</em> and deletes it automatically either when the thread exits -(either normally or via termination) or when <a href="#setLocalData">setLocalData</a>() is -called again. -<p> Note: TQThreadStorage can only store pointers. The <em>data</em> -argument must be either a pointer to an object created on the heap -(i.e. using <em>new</em>) or 0. You should not delete <em>data</em> -yourself; TQThreadStorage takes ownership and will delete the <em>data</em> itself. -<p> <p>See also <a href="#localData">localData</a>() and <a href="#hasLocalData">hasLocalData</a>(). - -<!-- eof --> -<hr><p> -This file is part of the <a href="index.html">TQt toolkit</a>. -Copyright © 1995-2007 -<a href="http://www.trolltech.com/">Trolltech</a>. All Rights Reserved.<p><address><hr><div align=center> -<table width=100% cellspacing=0 border=0><tr> -<td>Copyright © 2007 -<a href="troll.html">Trolltech</a><td align=center><a href="trademarks.html">Trademarks</a> -<td align=right><div align=right>TQt 3.3.8</div> -</table></div></address></body> -</html> |