| <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> |
| <html> |
| <!-- Copyright (C) 1988-2015 Free Software Foundation, Inc. |
| |
| Permission is granted to copy, distribute and/or modify this document |
| under the terms of the GNU Free Documentation License, Version 1.3 or |
| any later version published by the Free Software Foundation; with the |
| Invariant Sections being "Free Software" and "Free Software Needs |
| Free Documentation", with the Front-Cover Texts being "A GNU Manual," |
| and with the Back-Cover Texts as in (a) below. |
| |
| (a) The FSF's Back-Cover Text is: "You are free to copy and modify |
| this GNU Manual. Buying copies from GNU Press supports the FSF in |
| developing GNU and promoting software freedom." --> |
| <!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ --> |
| <head> |
| <title>Debugging with GDB: Threads In Python</title> |
| |
| <meta name="description" content="Debugging with GDB: Threads In Python"> |
| <meta name="keywords" content="Debugging with GDB: Threads In Python"> |
| <meta name="resource-type" content="document"> |
| <meta name="distribution" content="global"> |
| <meta name="Generator" content="makeinfo"> |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> |
| <link href="index.html#Top" rel="start" title="Top"> |
| <link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index"> |
| <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> |
| <link href="Python-API.html#Python-API" rel="up" title="Python API"> |
| <link href="Commands-In-Python.html#Commands-In-Python" rel="next" title="Commands In Python"> |
| <link href="Events-In-Python.html#Events-In-Python" rel="prev" title="Events In Python"> |
| <style type="text/css"> |
| <!-- |
| a.summary-letter {text-decoration: none} |
| blockquote.smallquotation {font-size: smaller} |
| div.display {margin-left: 3.2em} |
| div.example {margin-left: 3.2em} |
| div.indentedblock {margin-left: 3.2em} |
| div.lisp {margin-left: 3.2em} |
| div.smalldisplay {margin-left: 3.2em} |
| div.smallexample {margin-left: 3.2em} |
| div.smallindentedblock {margin-left: 3.2em; font-size: smaller} |
| div.smalllisp {margin-left: 3.2em} |
| kbd {font-style:oblique} |
| pre.display {font-family: inherit} |
| pre.format {font-family: inherit} |
| pre.menu-comment {font-family: serif} |
| pre.menu-preformatted {font-family: serif} |
| pre.smalldisplay {font-family: inherit; font-size: smaller} |
| pre.smallexample {font-size: smaller} |
| pre.smallformat {font-family: inherit; font-size: smaller} |
| pre.smalllisp {font-size: smaller} |
| span.nocodebreak {white-space:nowrap} |
| span.nolinebreak {white-space:nowrap} |
| span.roman {font-family:serif; font-weight:normal} |
| span.sansserif {font-family:sans-serif; font-weight:normal} |
| ul.no-bullet {list-style: none} |
| --> |
| </style> |
| |
| |
| </head> |
| |
| <body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> |
| <a name="Threads-In-Python"></a> |
| <div class="header"> |
| <p> |
| Next: <a href="Commands-In-Python.html#Commands-In-Python" accesskey="n" rel="next">Commands In Python</a>, Previous: <a href="Events-In-Python.html#Events-In-Python" accesskey="p" rel="prev">Events In Python</a>, Up: <a href="Python-API.html#Python-API" accesskey="u" rel="up">Python API</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> |
| </div> |
| <hr> |
| <a name="Threads-In-Python-1"></a> |
| <h4 class="subsubsection">23.2.2.18 Threads In Python</h4> |
| <a name="index-threads-in-python"></a> |
| |
| <a name="index-gdb_002eInferiorThread"></a> |
| <p>Python scripts can access information about, and manipulate inferior threads |
| controlled by <small>GDB</small>, via objects of the <code>gdb.InferiorThread</code> class. |
| </p> |
| <p>The following thread-related functions are available in the <code>gdb</code> |
| module: |
| </p> |
| <a name="index-gdb_002eselected_005fthread"></a> |
| <dl> |
| <dt><a name="index-gdb_002eselected_005fthread-1"></a>Function: <strong>gdb.selected_thread</strong> <em>()</em></dt> |
| <dd><p>This function returns the thread object for the selected thread. If there |
| is no selected thread, this will return <code>None</code>. |
| </p></dd></dl> |
| |
| <p>A <code>gdb.InferiorThread</code> object has the following attributes: |
| </p> |
| <dl> |
| <dt><a name="index-InferiorThread_002ename"></a>Variable: <strong>InferiorThread.name</strong></dt> |
| <dd><p>The name of the thread. If the user specified a name using |
| <code>thread name</code>, then this returns that name. Otherwise, if an |
| OS-supplied name is available, then it is returned. Otherwise, this |
| returns <code>None</code>. |
| </p> |
| <p>This attribute can be assigned to. The new value must be a string |
| object, which sets the new name, or <code>None</code>, which removes any |
| user-specified thread name. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-InferiorThread_002enum"></a>Variable: <strong>InferiorThread.num</strong></dt> |
| <dd><p>ID of the thread, as assigned by GDB. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-InferiorThread_002eptid"></a>Variable: <strong>InferiorThread.ptid</strong></dt> |
| <dd><p>ID of the thread, as assigned by the operating system. This attribute is a |
| tuple containing three integers. The first is the Process ID (PID); the second |
| is the Lightweight Process ID (LWPID), and the third is the Thread ID (TID). |
| Either the LWPID or TID may be 0, which indicates that the operating system |
| does not use that identifier. |
| </p></dd></dl> |
| |
| <p>A <code>gdb.InferiorThread</code> object has the following methods: |
| </p> |
| <dl> |
| <dt><a name="index-InferiorThread_002eis_005fvalid"></a>Function: <strong>InferiorThread.is_valid</strong> <em>()</em></dt> |
| <dd><p>Returns <code>True</code> if the <code>gdb.InferiorThread</code> object is valid, |
| <code>False</code> if not. A <code>gdb.InferiorThread</code> object will become |
| invalid if the thread exits, or the inferior that the thread belongs |
| is deleted. All other <code>gdb.InferiorThread</code> methods will throw an |
| exception if it is invalid at the time the method is called. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-InferiorThread_002eswitch"></a>Function: <strong>InferiorThread.switch</strong> <em>()</em></dt> |
| <dd><p>This changes <small>GDB</small>’s currently selected thread to the one represented |
| by this object. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-InferiorThread_002eis_005fstopped"></a>Function: <strong>InferiorThread.is_stopped</strong> <em>()</em></dt> |
| <dd><p>Return a Boolean indicating whether the thread is stopped. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-InferiorThread_002eis_005frunning"></a>Function: <strong>InferiorThread.is_running</strong> <em>()</em></dt> |
| <dd><p>Return a Boolean indicating whether the thread is running. |
| </p></dd></dl> |
| |
| <dl> |
| <dt><a name="index-InferiorThread_002eis_005fexited"></a>Function: <strong>InferiorThread.is_exited</strong> <em>()</em></dt> |
| <dd><p>Return a Boolean indicating whether the thread is exited. |
| </p></dd></dl> |
| |
| <hr> |
| <div class="header"> |
| <p> |
| Next: <a href="Commands-In-Python.html#Commands-In-Python" accesskey="n" rel="next">Commands In Python</a>, Previous: <a href="Events-In-Python.html#Events-In-Python" accesskey="p" rel="prev">Events In Python</a>, Up: <a href="Python-API.html#Python-API" accesskey="u" rel="up">Python API</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p> |
| </div> |
| |
| |
| |
| </body> |
| </html> |
