| <html lang="en"> |
| <head> |
| <title>SVR4 Process Information - Debugging with GDB</title> |
| <meta http-equiv="Content-Type" content="text/html"> |
| <meta name="description" content="Debugging with GDB"> |
| <meta name="generator" content="makeinfo 4.13"> |
| <link title="Top" rel="start" href="index.html#Top"> |
| <link rel="up" href="Native.html#Native" title="Native"> |
| <link rel="prev" href="BSD-libkvm-Interface.html#BSD-libkvm-Interface" title="BSD libkvm Interface"> |
| <link rel="next" href="DJGPP-Native.html#DJGPP-Native" title="DJGPP Native"> |
| <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> |
| <!-- |
| Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, |
| 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
| 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.''--> |
| <meta http-equiv="Content-Style-Type" content="text/css"> |
| <style type="text/css"><!-- |
| pre.display { font-family:inherit } |
| pre.format { font-family:inherit } |
| pre.smalldisplay { font-family:inherit; font-size:smaller } |
| pre.smallformat { font-family:inherit; font-size:smaller } |
| pre.smallexample { font-size:smaller } |
| pre.smalllisp { font-size:smaller } |
| span.sc { font-variant:small-caps } |
| span.roman { font-family:serif; font-weight:normal; } |
| span.sansserif { font-family:sans-serif; font-weight:normal; } |
| --></style> |
| <link rel="stylesheet" type="text/css" href="../cs.css"> |
| </head> |
| <body> |
| <div class="node"> |
| <a name="SVR4-Process-Information"></a> |
| <p> |
| Next: <a rel="next" accesskey="n" href="DJGPP-Native.html#DJGPP-Native">DJGPP Native</a>, |
| Previous: <a rel="previous" accesskey="p" href="BSD-libkvm-Interface.html#BSD-libkvm-Interface">BSD libkvm Interface</a>, |
| Up: <a rel="up" accesskey="u" href="Native.html#Native">Native</a> |
| <hr> |
| </div> |
| |
| <h4 class="subsection">21.1.3 SVR4 Process Information</h4> |
| |
| <p><a name="index-g_t_002fproc-1151"></a><a name="index-examine-process-image-1152"></a><a name="index-process-info-via-_0040file_007b_002fproc_007d-1153"></a> |
| Many versions of SVR4 and compatible systems provide a facility called |
| ‘<samp><span class="samp">/proc</span></samp>’ that can be used to examine the image of a running |
| process using file-system subroutines. If <span class="sc">gdb</span> is configured |
| for an operating system with this facility, the command <code>info |
| proc</code> is available to report information about the process running |
| your program, or about any process running on your system. <code>info |
| proc</code> works only on SVR4 systems that include the <code>procfs</code> code. |
| This includes, as of this writing, <span class="sc">gnu</span>/Linux, OSF/1 (Digital |
| Unix), Solaris, Irix, and Unixware, but not HP-UX, for example. |
| |
| |
| <a name="index-info-proc-1154"></a> |
| <a name="index-process-ID-1155"></a> |
| <dl><dt><code>info proc</code><dt><code>info proc </code><var>process-id</var><dd>Summarize available information about any running process. If a |
| process ID is specified by <var>process-id</var>, display information about |
| that process; otherwise display information about the program being |
| debugged. The summary includes the debugged process ID, the command |
| line used to invoke it, its current working directory, and its |
| executable file's absolute file name. |
| |
| <p>On some systems, <var>process-id</var> can be of the form |
| ‘<samp><span class="samp">[</span><var>pid</var><span class="samp">]/</span><var>tid</var></samp>’ which specifies a certain thread ID |
| within a process. If the optional <var>pid</var> part is missing, it means |
| a thread from the process being debugged (the leading ‘<samp><span class="samp">/</span></samp>’ still |
| needs to be present, or else <span class="sc">gdb</span> will interpret the number as |
| a process ID rather than a thread ID). |
| |
| <br><dt><code>info proc mappings</code><dd><a name="index-memory-address-space-mappings-1156"></a>Report the memory address space ranges accessible in the program, with |
| information on whether the process has read, write, or execute access |
| rights to each range. On <span class="sc">gnu</span>/Linux systems, each memory range |
| includes the object file which is mapped to that range, instead of the |
| memory access rights to that range. |
| |
| <br><dt><code>info proc stat</code><dt><code>info proc status</code><dd><a name="index-process-detailed-status-information-1157"></a>These subcommands are specific to <span class="sc">gnu</span>/Linux systems. They show |
| the process-related information, including the user ID and group ID; |
| how many threads are there in the process; its virtual memory usage; |
| the signals that are pending, blocked, and ignored; its TTY; its |
| consumption of system and user time; its stack size; its ‘<samp><span class="samp">nice</span></samp>’ |
| value; etc. For more information, see the ‘<samp><span class="samp">proc</span></samp>’ man page |
| (type <kbd>man 5 proc</kbd> from your shell prompt). |
| |
| <br><dt><code>info proc all</code><dd>Show all the information about the process described under all of the |
| above <code>info proc</code> subcommands. |
| |
| <br><dt><code>set procfs-trace</code><dd><a name="index-set-procfs_002dtrace-1158"></a><a name="index-g_t_0040code_007bprocfs_007d-API-calls-1159"></a>This command enables and disables tracing of <code>procfs</code> API calls. |
| |
| <br><dt><code>show procfs-trace</code><dd><a name="index-show-procfs_002dtrace-1160"></a>Show the current state of <code>procfs</code> API call tracing. |
| |
| <br><dt><code>set procfs-file </code><var>file</var><dd><a name="index-set-procfs_002dfile-1161"></a>Tell <span class="sc">gdb</span> to write <code>procfs</code> API trace to the named |
| <var>file</var>. <span class="sc">gdb</span> appends the trace info to the previous |
| contents of the file. The default is to display the trace on the |
| standard output. |
| |
| <br><dt><code>show procfs-file</code><dd><a name="index-show-procfs_002dfile-1162"></a>Show the file to which <code>procfs</code> API trace is written. |
| |
| <br><dt><code>proc-trace-entry</code><dt><code>proc-trace-exit</code><dt><code>proc-untrace-entry</code><dt><code>proc-untrace-exit</code><dd><a name="index-proc_002dtrace_002dentry-1163"></a><a name="index-proc_002dtrace_002dexit-1164"></a><a name="index-proc_002duntrace_002dentry-1165"></a><a name="index-proc_002duntrace_002dexit-1166"></a>These commands enable and disable tracing of entries into and exits |
| from the <code>syscall</code> interface. |
| |
| <br><dt><code>info pidlist</code><dd><a name="index-info-pidlist-1167"></a><a name="index-process-list_002c-QNX-Neutrino-1168"></a>For QNX Neutrino only, this command displays the list of all the |
| processes and all the threads within each process. |
| |
| <br><dt><code>info meminfo</code><dd><a name="index-info-meminfo-1169"></a><a name="index-mapinfo-list_002c-QNX-Neutrino-1170"></a>For QNX Neutrino only, this command displays the list of all mapinfos. |
| </dl> |
| |
| </body></html> |
| |
