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<head>
<title>NSThread class reference</title>
</head>
<body>
<font face="serif">
<a href="Base.html">Up</a>
<br />
<h1><a name="title$NSThread">NSThread class reference</a></h1>
<h3>Authors</h3>
<dl>
<dt>Scott Christley (<a href="mailto:scottc@net-community.com"><code>scottc@net-community.com</code></a>)</dt>
<dd>
</dd>
<dt>Andrew Kachites McCallum (<a href="mailto:mccallum@gnu.ai.mit.edu"><code>mccallum@gnu.ai.mit.edu</code></a>)</dt>
<dd>
</dd>
<dt>Richard Frith-Macdonald (<a href="mailto:richard@brainstorm.co.uk"><code>richard@brainstorm.co.uk</code></a>)</dt>
<dd>
</dd>
<dt>Nicola Pero (<a href="mailto:n.pero@mi.flashnet.it"><code>n.pero@mi.flashnet.it</code></a>)</dt>
<dd>
</dd>
</dl>
<p><b>Copyright:</b> (C) 1996-2018 Free Software Foundation, Inc.</p>
<div>
<hr width="50%" align="left" />
<h3>Contents -</h3>
<ol>
<li>
<a href="#001000000000">Software documentation for the NSThread class</a>
</li>
<li>
<a href="#002000000000">Software documentation for the
NSObject(NSThreadPerformAdditions)
category</a>
</li>
<li>
<a href="#003000000000">Software documentation for the
NSThread(CallStackSymbols) category</a>
</li>
<li>
<a href="#004000000000">Software documentation for the NSThread(GSLockInfo)
category</a>
</li>
</ol>
<hr width="50%" align="left" />
</div>
<h1><a name="001000000000">
Software documentation for the NSThread class
</a></h1>
<h2><a name="class$NSThread">NSThread</a> : <a rel="gsdoc" href="NSObject.html#class$NSObject">NSObject</a></h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSThread.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
This class encapsulates OpenStep threading. See
<a rel="gsdoc" href="NSLock.html#class$NSLock">NSLock</a>
and its subclasses for handling synchronisation between
threads. <br /> Each process begins with a main
thread and additional threads can be created using
NSThread. The GNUstep implementation of OpenStep
has been carefully designed so that the internals of
the base library do not use threading (except for
methods which explicitly deal with threads of
course) so that you can write applications without
threading. Non-threaded applications are more
efficient (no locking is required) and are easier
to debug during development.
</div>
<hr width="50%" align="left" />
<a href="#_NSThread_ivars">Instance Variables</a>
<br/><br/>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(CallStackSymbols)+callStackSymbols">+callStackSymbols</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(GSLockInfo)-mutexDrop$">-mutexDrop:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(GSLockInfo)-mutexHold$">-mutexHold:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(GSLockInfo)-mutexWait$">-mutexWait:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+callStackReturnAddresses">+callStackReturnAddresses</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+currentThread">+currentThread</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+detachNewThreadSelector$toTarget$withObject$">+detachNewThreadSelector:toTarget:withObject:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+exit">+exit</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+isMainThread">+isMainThread</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+isMultiThreaded">+isMultiThreaded</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+mainThread">+mainThread</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+setThreadPriority$">+setThreadPriority:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+sleepForTimeInterval$">+sleepForTimeInterval:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+sleepUntilDate$">+sleepUntilDate:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread+threadPriority">+threadPriority</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-cancel">-cancel</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-init">-init</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-initWithTarget$selector$object$">-initWithTarget:selector:object:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-isCancelled">-isCancelled</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-isExecuting">-isExecuting</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-isFinished">-isFinished</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-isMainThread">-isMainThread</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-main">-main</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-name">-name</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-setName$">-setName:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-setStackSize$">-setStackSize:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-stackSize">-stackSize</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-start">-start</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread-threadDictionary">-threadDictionary</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSThread+callStackReturnAddresses">callStackReturnAddresses </a></h3>
+ (<a rel="gsdoc" href="NSArray.html#class$NSArray">NSArray</a>*) <b>callStackReturnAddresses</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns an array of the call stack return
addresses.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+currentThread">currentThread </a></h3>
+ (<a rel="gsdoc" href="#class$NSThread">NSThread</a>*) <b>currentThread</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
</p>
<p>
Returns the NSThread object corresponding to the
current thread.
</p>
<p>
</p>
<p>
NB. In GNUstep the library internals use the
GSCurrentThread()
function as a more efficient mechanism for doing
this job - so you cannot use a category to override
this method and expect the library internals to use
your implementation.
</p>
<p>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+detachNewThreadSelector$toTarget$withObject$">detachNewThreadSelector: toTarget: withObject: </a></h3>
+ (void) <b>detachNewThreadSelector:</b> (SEL)aSelector<b> toTarget:</b> (id)aTarget<b> withObject:</b> (id)anArgument;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
</p>
<p>
Create a new thread - use this method rather than
alloc-init. The new thread will begin
executing the message given by
<var>aSelector</var>, <var>aTarget</var>, and
<var>anArgument</var>. This should have no return
value, and must set up an autorelease pool if
retain/release memory management is used.
It should free this pool before it finishes execution.
</p>
<p>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+exit">exit </a></h3>
+ (void) <b>exit</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Terminates the current thread. <br /> Normally
you don't need to call this method explicitly, since
exiting the method with which the thread was
detached causes this method to be called
automatically.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+isMainThread">isMainThread </a></h3>
+ (BOOL) <b>isMainThread</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns a boolean indicating whether this thread is
the main thread of the process.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+isMultiThreaded">isMultiThreaded </a></h3>
+ (BOOL) <b>isMultiThreaded</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Returns a flag to say whether the application is
multi-threaded or not. <br /> An application
is considered to be multi-threaded if any thread other
than the main thread has been started, irrespective of
whether that thread has since terminated. <br />
NB. This method returns <code>YES</code> if called
within a handler processing
<code>NSWillBecomeMultiThreadedNotification</code>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+mainThread">mainThread </a></h3>
+ (<a rel="gsdoc" href="#class$NSThread">NSThread</a>*) <b>mainThread</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns the main thread of the process.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+setThreadPriority$">setThreadPriority: </a></h3>
+ (void) <b>setThreadPriority:</b> (double)pri;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.2.0, Base 1.2.0</div>
<br />
<div class="desc">
Set the priority of the current thread. This is a value
in the range 0.0 (lowest) to 1.0 (highest) which is
mapped to the underlying system priorities.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+sleepForTimeInterval$">sleepForTimeInterval: </a></h3>
+ (void) <b>sleepForTimeInterval:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSTimeInterval">NSTimeInterval</a>)ti;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Suspends execution of the process for the
specified period.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+sleepUntilDate$">sleepUntilDate: </a></h3>
+ (void) <b>sleepUntilDate:</b> (<a rel="gsdoc" href="NSDate.html#class$NSDate">NSDate</a>*)date;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Delaying a thread... pause until the specified
<var>date</var>.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread+threadPriority">threadPriority </a></h3>
+ (double) <b>threadPriority</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.2.0, Base 1.2.0</div>
<br />
<div class="desc">
Return the priority of the current thread.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-cancel">cancel </a></h3>
- (void) <b>cancel</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Cancels the receiving thread.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-init">init </a></h3>
- (id) <b>init</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
This is a designated initialiser for the class.<br />
<div class="desc">
<em>Description forthcoming.</em>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-initWithTarget$selector$object$">initWithTarget: selector: object: </a></h3>
- (id) <b>initWithTarget:</b> (id)aTarget<b> selector:</b> (SEL)aSelector<b> object:</b> (id)anArgument;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Initialises the receiver to send the message
<var>aSelector</var> to the object <var>aTarget</var>
with the argument <var>anArgument</var> (which may be
<code>nil</code>). <br /> The arguments
<var>aTarget</var> and <var>aSelector</var> are
retained while the thread is running.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-isCancelled">isCancelled </a></h3>
- (BOOL) <b>isCancelled</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns a boolean indicating whether the receiving
thread has been cancelled.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-isExecuting">isExecuting </a></h3>
- (BOOL) <b>isExecuting</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns a boolean indicating whether the receiving
thread has been started (and has not yet finished or
been cancelled).
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-isFinished">isFinished </a></h3>
- (BOOL) <b>isFinished</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns a boolean indicating whether the receiving
thread has completed executing.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-isMainThread">isMainThread </a></h3>
- (BOOL) <b>isMainThread</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns a boolean indicating whether this thread is
the main thread of the process.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-main">main </a></h3>
- (void) <b>main</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
FIXME... what does this do?
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-name">name </a></h3>
- (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>name</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns the name of the receiver.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-setName$">setName: </a></h3>
- (void) <b>setName:</b> (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*)aName;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Sets the name of the receiver.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-setStackSize$">setStackSize: </a></h3>
- (void) <b>setStackSize:</b> (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>)stackSize;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Sets the size of the receiver's stack.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-stackSize">stackSize </a></h3>
- (<a rel="gsdoc" href="TypesAndConstants.html#type$NSUInteger">NSUInteger</a>) <b>stackSize</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Returns the size of the receiver's stack.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-start">start </a></h3>
- (void) <b>start</b>;<br />
<div class="availability">
<b>Availability:</b> MacOS-X 10.5.0, Base 1.15.1</div>
<br />
<div class="desc">
Starts the receiver executing.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread-threadDictionary">threadDictionary </a></h3>
- (<a rel="gsdoc" href="NSDictionary.html#class$NSMutableDictionary">NSMutableDictionary</a>*) <b>threadDictionary</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Return the thread dictionary. This dictionary can be
used to store arbitrary thread specific data. <br />
NB. This cannot be autoreleased, since we cannot be
sure that the autorelease pool for the thread will
continue to exist for the entire life of the
thread!
</div>
<hr width="25%" align="left" />
</div>
<a name="_NSThread_ivars"/> <br/><hr width="50%" align="left" />
<h2>Instance Variables for NSThread Class</h2>
<h3><a name="ivariable$NSThread*_active">_active</a></h3>
@public BOOL <b>_active</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_arg">_arg</a></h3>
@public id <b>_arg</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_autorelease_vars">_autorelease_vars</a></h3>
@public struct autorelease_thread_vars <b>_autorelease_vars</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_cancelled">_cancelled</a></h3>
@public BOOL <b>_cancelled</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_exception_handler">_exception_handler</a></h3>
@public NSHandler* <b>_exception_handler</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_finished">_finished</a></h3>
@public BOOL <b>_finished</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_gcontext">_gcontext</a></h3>
@public id <b>_gcontext</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_name">_name</a></h3>
@public NSString* <b>_name</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_runLoopInfo">_runLoopInfo</a></h3>
@public void* <b>_runLoopInfo</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_selector">_selector</a></h3>
@public SEL <b>_selector</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_stackSize">_stackSize</a></h3>
@public NSUInteger <b>_stackSize</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_target">_target</a></h3>
@public id <b>_target</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<h3><a name="ivariable$NSThread*_thread_dictionary">_thread_dictionary</a></h3>
@public NSMutableDictionary* <b>_thread_dictionary</b>;<br />
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Warning</em> the underscore at the start of the
name of this instance variable indicates that, even
though it is not technically <em>private</em>, it is
intended for internal use within the package, and
you should not use the variable in other code.
</div>
<hr width="25%" align="left" />
<br/><hr width="50%" align="left" /><br/>
<h1><a name="002000000000">
Software documentation for the
NSObject(NSThreadPerformAdditions)
category
</a></h1>
<h2><a rel="gsdoc" href="NSObject.html#class$NSObject">NSObject</a>(<a name="category$NSObject(NSThreadPerformAdditions)">NSThreadPerformAdditions</a>)</h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSThread.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
Extra methods to permit messages to be sent to an
object such that they are executed in <em>another</em>
thread. <br /> The main thread is the thread in which
the GNUstep system is started, and where the GNUstep gui
is used, it is the thread in which gui drawing operations
<strong>must</strong> be performed.
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSThread.html#method$NSObject(NSThreadPerformAdditions)-performSelector$onThread$withObject$waitUntilDone$">-performSelector:onThread:withObject:waitUntilDone:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSObject(NSThreadPerformAdditions)-performSelector$onThread$withObject$waitUntilDone$modes$">-performSelector:onThread:withObject:waitUntilDone:modes:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSObject(NSThreadPerformAdditions)-performSelectorInBackground$withObject$">-performSelectorInBackground:withObject:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSObject(NSThreadPerformAdditions)-performSelectorOnMainThread$withObject$waitUntilDone$">-performSelectorOnMainThread:withObject:waitUntilDone:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSObject(NSThreadPerformAdditions)-performSelectorOnMainThread$withObject$waitUntilDone$modes$">-performSelectorOnMainThread:withObject:waitUntilDone:modes:</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSObject(NSThreadPerformAdditions)-performSelector$onThread$withObject$waitUntilDone$">performSelector: onThread: withObject: waitUntilDone: </a></h3>
- (void) <b>performSelector:</b> (SEL)aSelector<b> onThread:</b> (<a rel="gsdoc" href="#class$NSThread">NSThread</a>*)aThread<b> withObject:</b> (id)anObject<b> waitUntilDone:</b> (BOOL)aFlag;<br />
<div class="availability">
<b>Availability:</b> Base 10.5.0<br />
</div>
<br />
<div class="desc">
Invokes
<a rel="gsdoc" href="#method$NSObject(NSThreadPerformAdditions)-performSelector$onThread$withObject$waitUntilDone$modes$">-performSelector:onThread:withObject:waitUntilDone:modes:</a>
using the supplied arguments and an array containing common modes. <br /> These modes consist of NSRunLoopMode, NSConnectionreplyMode, and if in an application, the NSApplication modes.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSObject(NSThreadPerformAdditions)-performSelector$onThread$withObject$waitUntilDone$modes$">performSelector: onThread: withObject: waitUntilDone: modes: </a></h3>
- (void) <b>performSelector:</b> (SEL)aSelector<b> onThread:</b> (<a rel="gsdoc" href="#class$NSThread">NSThread</a>*)aThread<b> withObject:</b> (id)anObject<b> waitUntilDone:</b> (BOOL)aFlag<b> modes:</b> (<a rel="gsdoc" href="NSArray.html#class$NSArray">NSArray</a>*)anArray;<br />
<div class="availability">
<b>Availability:</b> Base 10.5.0<br />
</div>
<br />
<div class="desc">
</p>
<p>
This method performs <var>aSelector</var> on the
receiver, passing <var>anObject</var> as an
argument, but does so in the specified thread.
The receiver and <var>anObject</var> are both
retained until the method is performed.
</p>
<p>
</p>
<p>
The selector is performed when the runloop of
<var>aThread</var> next runs in one of the modes
specified in <var>anArray</var>. <br /> Where
this method has been called more than once before
the runloop of the thread runs in the required mode,
the order in which the operations in the thread is
done is the same as that in which they were added
using this method.
</p>
<p>
</p>
<p>
If there are no modes in <var>anArray</var>, the
method has no effect and simply returns
immediately.
</p>
<p>
</p>
<p>
The argument <var>aFlag</var> specifies whether the
method should wait until the selector has been
performed before returning. <br />
<strong>NB.</strong> This method does
<em>not</em> cause the runloop of <var>aThread</var>
to be run... so if the runloop is not executed by some
code in <var>aThread</var>, the thread waiting for
the perform to complete will block forever.
</p>
<p>
</p>
<p>
As a special case, if <var>aFlag</var> ==
<code>YES</code> and the current thread is
<var>aThread</var>, the modes array is ignored and
the selector is performed immediately. This behavior
is necessary to avoid the current thread being blocked
by waiting for a perform which will never happen
because the runloop is not executing.
</p>
<p>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSObject(NSThreadPerformAdditions)-performSelectorInBackground$withObject$">performSelectorInBackground: withObject: </a></h3>
- (void) <b>performSelectorInBackground:</b> (SEL)aSelector<b> withObject:</b> (id)anObject;<br />
<div class="availability">
<b>Availability:</b> Base 10.5.0<br />
</div>
<br />
<div class="desc">
Creates and runs a new background thread sending
<var>aSelector</var> to the receiver and passing
<var>anObject</var> (which may be <code>nil</code>)
as the argument.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSObject(NSThreadPerformAdditions)-performSelectorOnMainThread$withObject$waitUntilDone$">performSelectorOnMainThread: withObject: waitUntilDone: </a></h3>
- (void) <b>performSelectorOnMainThread:</b> (SEL)aSelector<b> withObject:</b> (id)anObject<b> waitUntilDone:</b> (BOOL)aFlag;<br />
<div class="availability">
<b>Availability:</b> Base 10.2.0<br />
</div>
<br />
<div class="desc">
Invokes
<a rel="gsdoc" href="#method$NSObject(NSThreadPerformAdditions)-performSelectorOnMainThread$withObject$waitUntilDone$modes$">-performSelectorOnMainThread:withObject:waitUntilDone:modes:</a>
using the supplied arguments and an array containing common modes. <br /> These modes consist of NSRunLoopMode, NSConnectionReplyMode, and if in an application, the NSApplication modes.
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSObject(NSThreadPerformAdditions)-performSelectorOnMainThread$withObject$waitUntilDone$modes$">performSelectorOnMainThread: withObject: waitUntilDone: modes: </a></h3>
- (void) <b>performSelectorOnMainThread:</b> (SEL)aSelector<b> withObject:</b> (id)anObject<b> waitUntilDone:</b> (BOOL)aFlag<b> modes:</b> (<a rel="gsdoc" href="NSArray.html#class$NSArray">NSArray</a>*)anArray;<br />
<div class="availability">
<b>Availability:</b> Base 10.2.0<br />
</div>
<br />
<div class="desc">
</p>
<p>
This method performs <var>aSelector</var> on the
receiver, passing <var>anObject</var> as an
argument, but does so in the main thread of the
program. The receiver and <var>anObject</var>
are both retained until the method is performed.
</p>
<p>
</p>
<p>
The selector is performed when the runloop of the
main thread next runs in one of the modes specified
in <var>anArray</var>. <br /> Where this method has
been called more than once before the runloop of the
main thread runs in the required mode, the order in
which the operations in the main thread is done is
the same as that in which they were added using this
method.
</p>
<p>
</p>
<p>
If there are no modes in <var>anArray</var>, the
method has no effect and simply returns
immediately.
</p>
<p>
</p>
<p>
The argument <var>aFlag</var> specifies whether the
method should wait until the selector has been
performed before returning. <br />
<strong>NB.</strong> This method does
<em>not</em> cause the runloop of the main thread to
be run... so if the runloop is not executed by some
code in the main thread, the thread waiting for the
perform to complete will block forever.
</p>
<p>
</p>
<p>
As a special case, if <var>aFlag</var> ==
<code>YES</code> and the current thread is the
main thread, the modes array is ignored and the
selector is performed immediately. This behavior
is necessary to avoid the main thread being blocked by
waiting for a perform which will never happen
because the runloop is not executing.
</p>
<p>
</div>
<hr width="25%" align="left" />
</div>
<h1><a name="003000000000">
Software documentation for the
NSThread(CallStackSymbols) category
</a></h1>
<h2><a rel="gsdoc" href="#class$NSThread">NSThread</a>(<a name="category$NSThread(CallStackSymbols)">CallStackSymbols</a>)</h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSThread.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> OpenStep</div>
<br />
<div class="desc">
<em>Description forthcoming.</em>
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(CallStackSymbols)+callStackSymbols">+callStackSymbols</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSThread(CallStackSymbols)+callStackSymbols">callStackSymbols </a></h3>
+ (<a rel="gsdoc" href="NSArray.html#class$NSArray">NSArray</a>*) <b>callStackSymbols</b>;<br />
<div class="availability">
<b>Availability:</b> Base 10.6.0<br />
</div>
<br />
<div class="desc">
Returns an array of NSString objects representing
the current stack in an implementation-defined format.
May return an empty array if this feature is not
available.
</div>
<hr width="25%" align="left" />
</div>
<h1><a name="004000000000">
Software documentation for the NSThread(GSLockInfo)
category
</a></h1>
<h2><a rel="gsdoc" href="#class$NSThread">NSThread</a>(<a name="category$NSThread(GSLockInfo)">GSLockInfo</a>)</h2>
<blockquote class="declared">
<dl>
<dt><b>Declared in:</b></dt>
<dd>Foundation/NSThread.h</dd>
</dl>
</blockquote>
<div class="availability">
<b>Availability:</b> Base<br />
Likely to be changed/moved/removed at 0.0.0</div>
<br />
<div class="desc">
<em>Description forthcoming.</em>
</div>
<b>Method summary</b>
<ul>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(GSLockInfo)-mutexDrop$">-mutexDrop:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(GSLockInfo)-mutexHold$">-mutexHold:</a></li>
<li><a rel="gsdoc" href="NSThread.html#method$NSThread(GSLockInfo)-mutexWait$">-mutexWait:</a></li>
</ul>
<hr width="50%" align="left" />
<div class="method">
<h3><a name="method$NSThread(GSLockInfo)-mutexDrop$">mutexDrop: </a></h3>
- (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>mutexDrop:</b> (id)mutex;<br />
<div class="availability">
<b>Availability:</b> Base<br />
Likely to be changed/moved/removed at 0.0.0</div>
<br />
<div class="desc">
<em>Description forthcoming.</em>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread(GSLockInfo)-mutexHold$">mutexHold: </a></h3>
- (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>mutexHold:</b> (id)mutex;<br />
<div class="availability">
<b>Availability:</b> Base<br />
Likely to be changed/moved/removed at 0.0.0</div>
<br />
<div class="desc">
<em>Description forthcoming.</em>
</div>
<hr width="25%" align="left" />
</div>
<div class="method">
<h3><a name="method$NSThread(GSLockInfo)-mutexWait$">mutexWait: </a></h3>
- (<a rel="gsdoc" href="NSString.html#class$NSString">NSString</a>*) <b>mutexWait:</b> (id)mutex;<br />
<div class="availability">
<b>Availability:</b> Base<br />
Likely to be changed/moved/removed at 0.0.0</div>
<br />
<div class="desc">
<em>Description forthcoming.</em>
</div>
<hr width="25%" align="left" />
</div>
<br />
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