<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> <meta name="Author" content="Johannes Sixt"> <title>KDbg - User's Manual - Threads</title> </head> <body text="#000000" bgcolor="#FFFFFF"> <p><a href="index.html">Contents</a></p> <h1> The Threads Window</h1> <p>The threads window is displayed using <i>View|Threads</i>. The threads window lists the active threads of the program.</p> <p><b><i>Note:</i></b> Debugging threaded programs must be supported by the version of gdb that is used - it is not a feature of KDbg. For Linux systems this works best with gdb5 and later. However, at the time of this writing gdb still poorly supports threads on NPTL- (New Posix Threads Library) enabled systems (glibc 2.3.x and kernel 2.6.x).</p> <p>The contents of the threads window are updated every time the program is stopped by the debugger. (That is, the window does <em>not</em> reflect the state while the program is running.)</p> <p>The first column shows the thread ID, the second column identifies the location where the thread currently executes.</p> <p>The marker in front of the line tells which thread currently is <em>active</em>:</p> <ul> <li> The <a href="stack.html">stack window</a> displays the active threads's backtrace.</li> <li> The <a href="localvars.html">local variables</a> window displays the active thread's local variables.</li> <li> The <a href="watches.html">watch window</a> uses the active thread's local variables to evaluate the expressions.</li> </ul> <p>By clicking a listed thread, the active thread is switched, and the corresponding windows are updated. In particular, the <a href="sourcecode.html">source window</a> displays the location where the active thread is currently halted.</p> </body> </html>