The Data Display Debugger Ddd [−−Gdb] [−−Dbx] [−−Xdb] [−−Jdb]
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Debugging with DDD
Debugging with DDD User’s Guide and Reference Manual First Edition, for DDD Version 3.2 Last updated 2000-01-03 Andreas Zeller Debugging with DDD User’s Guide and Reference Manual Copyright c 2000 Universität Passau Lehrstuhl für Software-Systeme Innstraße 33 D-94032 Passau GERMANY Distributed by Free Software Foundation, Inc. 59 Temple Place – Suite 330 Boston, MA 02111-1307 USA ddd and this manual are available via the ddd www page. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided also that the sections entitled “Copying” and “GNU General Public License” (see Appendix G [License], page 181) are included exactly as in the original, and provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions, except that this permission notice may be stated in a translation approved by the Free Software Foundation. Send questions, comments, suggestions, etc. to [email protected]. Send bug reports to [email protected]. i Short Contents Summary of DDD .............................................. 1 1 A Sample DDD Session ...................................... 5 2 Getting In and Out of DDD ................................... 15 3 The DDD Windows ........................................ 39 4 Navigating through the Code .................................. 71 5 Stopping the Program ....................................... 79 6 Running the Program ....................................... 89 7 Examining Data ......................................... -
Ethereal Developer's Guide Draft 0.0.2 (15684) for Ethereal 0.10.11
Ethereal Developer's Guide Draft 0.0.2 (15684) for Ethereal 0.10.11 Ulf Lamping, Ethereal Developer's Guide: Draft 0.0.2 (15684) for Ethere- al 0.10.11 by Ulf Lamping Copyright © 2004-2005 Ulf Lamping Permission is granted to copy, distribute and/or modify this document under the terms of the GNU General Public License, Version 2 or any later version published by the Free Software Foundation. All logos and trademarks in this document are property of their respective owner. Table of Contents Preface .............................................................................................................................. vii 1. Foreword ............................................................................................................... vii 2. Who should read this document? ............................................................................... viii 3. Acknowledgements ................................................................................................... ix 4. About this document .................................................................................................. x 5. Where to get the latest copy of this document? ............................................................... xi 6. Providing feedback about this document ...................................................................... xii I. Ethereal Build Environment ................................................................................................14 1. Introduction .............................................................................................................15 -
A.5.1. Linux Programming and the GNU Toolchain
Making the Transition to Linux A Guide to the Linux Command Line Interface for Students Joshua Glatt Making the Transition to Linux: A Guide to the Linux Command Line Interface for Students Joshua Glatt Copyright © 2008 Joshua Glatt Revision History Revision 1.31 14 Sept 2008 jg Various small but useful changes, preparing to revise section on vi Revision 1.30 10 Sept 2008 jg Revised further reading and suggestions, other revisions Revision 1.20 27 Aug 2008 jg Revised first chapter, other revisions Revision 1.10 20 Aug 2008 jg First major revision Revision 1.00 11 Aug 2008 jg First official release (w00t) Revision 0.95 06 Aug 2008 jg Second beta release Revision 0.90 01 Aug 2008 jg First beta release License This document is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License [http:// creativecommons.org/licenses/by-nc-sa/3.0/us/]. Legal Notice This document is distributed in the hope that it will be useful, but it is provided “as is” without express or implied warranty of any kind; without even the implied warranties of merchantability or fitness for a particular purpose. Although the author makes every effort to make this document as complete and as accurate as possible, the author assumes no responsibility for errors or omissions, nor does the author assume any liability whatsoever for incidental or consequential damages in connection with or arising out of the use of the information contained in this document. The author provides links to external websites for informational purposes only and is not responsible for the content of those websites. -
The Focus - Issue 36
Contents The Focus - Issue 36 A Publication for ANSYS Users Contents Feature Articles ● Linux & ANSYS: Lessons Learned ● Backup Tool ● Design Modeler FAQ On the Web ● APDL Customization course notes now available for purchase ● ANSYS and MathCAD ● ANSYS Acquires Century Dynamics Resources ● PADT Support: How can we help? ● Upcoming Training at PADT ● About The Focus ❍ The Focus Library ❍ Contributor Information ❍ Subscribe / Unsubscribe ❍ Legal Disclaimer http://www.padtinc.com/epubs/focus/common/contents.asp [3/28/2005 9:06:12 AM] Linux & ANSYS: Lessons Learned The Focus - Issue 36 A Publication for ANSYS Users Linux & ANSYS: Lessons Learned by Eric Miller, PADT Every couple of years, the computing picture for analysts gets turned upside down. For a long time now the industry has been moving from Unix workstations to Windows/Intel desktop machines. The wintel price/performance has been fantastic, the IT guys are happier, and all of that productivity software that you spend so much time with runs in the same spot. We have been happy with a stable and known environment. However, accepting the fact that unless you work for a big company that can buy some Unix servers, you just don’t have an easy way to get some extra horsepower other then getting a new box. Then along comes this Finnish guy that may or may not have been named after Lucy’s little brother. With not much of a life and a very large brain, he popped out the majority of a complete and free version of Unix that anyone can use, breaking the stranglehold of (expensive) proprietary Unix OS’s that ran on (expensive) proprietary hardware. -
Hands on #1 Overview
Hands On #1 ercises Overview See Wednesday’ s hands on Part Where1 : Starting is your andinstallation familiarizing ? Getting the example programs Running novice examples : N01, N03, N02 … Part Examine2 : Looking cross into sections Geant4, trying it out with ex Simulate depth dose curve Compute and plot Bragg curve Addenda : other examples, histogramming Your Geant4 installation VMware Player users under Windows or Mac OS all files downloaded from http://geant4.in2p3.fr/cenbg/vmware.html in principle, no installation needed all your peripherals should be operational (WiFi, disks,…) Installation from beginning CERN link http://geant4.web.cern.ch/geant4/support/download.shtml SLAC link http://geant4.slac.stanford.edu/installation/ User forum http://geant4-hn.slac.stanford.edu:5090/HyperNews/public/get/installconfig.html Installation guide http://geant4.web.cern.ch/geant4/UserDocumentation/UsersGuides/InstallationGuide/html/index.html This Hands On will help you check your installation of Geant4 is correct If not, we can try to help during this Hands On… Access your Geant4 installation for VMware users Start the VMware player software Start your VMware machine Log onto the VMware machine Username: local1 , password: local1 Open a terminal (right click on desktop with mouse) You are now working under Scientific Linux 4.2 with gcc 3.4.4 By default on your Windows PC, the directory /mnt/hgfs/echanges is a link to C:\ Tips for VMware users (1/2) Geant4 8.3 installation path : /usr/local/geant4 you need root privileges -
Source Level Debugging GDB: Gnu Debugger Starting/Exiting GDB Stopping and Continuing the Execution of Your Program In
Source Level Debugging GDB: Gnu DeBugger ● A source level debugger has a number of useful features that facilitates debugging problems ● GDB is a line oriented debugger where actions associated with executing your program. are issued by typing in commands. ● You have to create symbolic table information ● It can be invoked for executables compiled by within the executable by using the -g option when gcc or g++ with the -g option. compiling with gcc or g++. ● General capabilities: ● This symbolic table information includes the correspondances between – Starting/exiting your program from the debugger. – Stopping and continuing the execution of your – statements in the source code and locations of instructions program. in the executable – Examining the state of your program. – variables in the source code and locations in the data areas of the executable – Changing state in your program. Starting/Exiting GDB Stopping and Continuing the ● Bring up the gdb debugger by typing: Execution of Your Program in GDB gdb executable_name ● Setting and deleting breakpoints. ● Initiate your executable by using the command: run [command-line arguments] ● Execution stepping and continuing. – Command line arguments can include anything that would normally appear after the executable name on the command line. ● run-time options, filenames, I/O redirection, etc. – When no arguments are specified, then gdb uses the arguments specified for the previous run command during the current gdb session. ● Exit the gdb debugger by typing: quit Setting and Deleting Breakpoints Examples of Setting and Deleting Breakpoints ● Can set a breakpoint to stop: – at a particular source line number or function (gdb) break # sets breakpoint at current line # number – when a specified condition occurs (gdb) break 74 # sets breakpoint at line 74 in the # current file ● General form. -
Appendix B Development Tools
Appendix B Development Tools Problem Statement Although more proprietary packages are available, there are abundant open source packages, giving its users unprecedented flexibility and freedom of choice, that most users can find an application that exactly meets their needs. However, it is also this pool of choices that drive individuals to share a wide range of preferences and biases. As a result, Linux/Open source packages (and softeware in general) is flooded with religious wars over programming languages, editors, licences, etc. Some are worthwhile debates, others are meaningless flamewars. Throughout Appendix B and next chapter, Appendix C, we intend to summarize a few essential tools (from our point of view) that may help readers to know the aspects and how-to of (1) development tools including programming, debugging, and maintaining, and (2) network experiment tools including name-addressing, perimeter probing, traffic-monitoring, benchmarking, simulating/emulating, and finally hacking. Section B.1 guides readers to begin the developing journey with programming tools. A good first step would be writing the first piece of codes using a Visual Improved (vim) text editor. Then compiling it to binary executables with GNU C compiler (gcc), and furthermore offloading some repetitive compiling steps to the make utility. The old 80/20 rule still works on programming where 80% of your codes come from 20% of your efforts leaving 80% of your efforts go buggy about your program. Therefore you would need some debugging tools as dicussed in Section 1.2. including source-level debugging, GNU Debugger (gdb), or a GUI fasion approach, Data Display Debugger (ddd), and debug the kernel itself using remote Kernel GNU Debugger (kgdb). -
An Introduction to PWF Linux
An Introduction to PWF Linux Dr MJ Rutter [email protected] Michaelmas 2001 Typeset by FoilTEX °c 2001 MJ Rutter UNIX Development of UNIX started in 1969 in AT&T Bell Labs. Version 1, written in assembler, appeared in 1971. A couple of years later it was rewritten in the new C language, also developed by Bell Labs. In 1975 UNIX was made available outside Bell Labs. By the early 1990s it was the operating system for largish computers. Cray, DEC, HP, IBM, SGI and Sun all sold versions with their computers. None of its competitors achieved this level of cross-platform support. Competitors included MVS (IBM only), VMS (DEC only) and WinNT (effectively Intel only). 1 Linux Linux famously started being developed by a Finnish graduate student, Linus Torvalds, in 1991. It was intended to be a UNIX variant running on Intel i386- based PCs. From an early stage Linus made the source freely available and encouraged others to contribute. In 1994 version 1 was released, followed by 1.2 a year later, and 2.0 the following year. By this time support had grown to include Macintoshes and Alphas as well as PCs. The current version is 2.4, released in 2001, and development continues. 2 The Computer Resources The computers in the Physics PWF and in the CS-run PWFs in the centre of Cambridge all run a version of Linux which contains all the software needed for this course. These computers use the same Novell server for your home directories that they do when running Windows. -
Debugging and Tuning Linux for EDA
Debugging and Tuning Linux for EDA Fabio Somenzi [email protected] University of Colorado at Boulder Outline Compiling gcc icc/ecc Debugging valgrind purify ddd Profiling gcov, gprof quantify vtl valgrind Compiling Compiler options related to static checks debugging optimization Profiling-driven optimization Compiling with GCC gcc -Wall -O3 -g reports most uses of potentially uninitialized variables -O3 (or -O6) necessary to trigger dataflow analysis can be fooled by if (cond) x = VALUE; ... if (cond) y = x; Uninitialized variables not considered for register allocation may escape Achieving -Wall-clean code is not too painful and highly desirable Compiling C code with g++ is more painful, but has its rewards Compiling with GCC gcc -mcpu=pentium4 -malign-double -mcpu=pentium4 optimizes for the Pentium 4, but produces code that runs on any x86 -march=pentium4 uses Pentium 4-specific instructions -malign-double forces alignment of double’s to double-word boundary Use either for all files or for none gcc -mfpmath=sse Controls the use of SSE instructions for floating point For complete listing, check gcc’s info page under Invoking gcc ! Submodel Options Compiling with ICC ICC is the Intel compiler for IA-32 systems. http://www.intel.com/software/products/ icc -O3 -g -ansi -w2 -Wall Aggressive optimization Retain debugging info Strict ANSI conformance Display remarks, warnings, and errors Enable all warnings Remarks tend to be a bit overwhelming Fine grain control over diagnostic: see man page Compiling with ICC icc -tpp7 Optimize instruction scheduling -
SAS on Unix/Linux- from the Terminal to GUI
SAS on Unix/Linux- from the terminal to GUI. L Gakava & S Kannan – October 2015 Agenda All about the terminal o Customising your terminal o Basic Linux terminal commands o Running SAS in non-interactive mode o Available SAS file editors o What to look out for on Unix/Linux platform All about Graphical User Interface (GUI) o Launching SAS GUI. o Changing SAS default behaviour o SAS ToolBox commands o SAS editor commands. Motivation - Why Use SAS On Unix/Linux? Using SAS on UNIX/Linux Platform o Company migrating to UNIX/Linux o Joining a company which is using SAS on the Linux platform Challenge Too many commands to learn! Why Use SAS On Unix/Linux o Customising Linux sessions will ensure you increase work efficiency by taking advantage of the imbedded Linux tools. In general transferring and running large files will be quicker in Linux compared to PC*. Terminal What to expect when you login? % pwd /home/username % ls Customise: Update .bashrc file with this line PS1='$IV $PWD$EE> ' will change your prompt to show the following: /home/username> Terminal Navigation Command Meaning ls list files and directories ls -a list all files and directories mkdir make a directory cd directory change to named directory cd change to home-directory cd ~ change to home-directory cd .. change to parent directory Terminal Navigation Command Meaning cp file1 file2 copy file1 and call it file2 mv file1 file2 move or rename file1 to file2 rm file remove a file rmdir directory remove a directory cat file display a file less file display a file a page at a time head file display the first few lines of a file tail file display the last few lines of a file grep 'keyword' file search a file for keywords count number of lines/words/ wc file characters in file Terminal useful commands How do you find out if a version of a file has changed? /home/username>diff file1.txt file2.txt Command to compare two files. -
The Visual Development of GCC Plug-Ins with GDE
The Visual Development of GCC Plug-ins with GDE Daniel J. Dean Sean Callanah Erez Zadok Stony Brook University Stony Brook University Stony Brook University [email protected] [email protected] [email protected] Appears in the Proceedings of the 2009 GCC Developers’ Summit Abstract application-specific custom optimizations, integrated type checking, function call logging, or parallism to Being able to directly affect code compilation with code code at compile time [2] [30] [24] [21]. Code trans- transformations allows the seamless addition of custom formations give developers this ability by modify- optimizations and specialized functionality to code at ing the compiler’s internal representation of compiling compile time. Traditionally, this has only been possi- code. The traditional development of code transforma- ble by directly modifying compiler source code: a very tions,however, requires the direct modification of com- difficult task. Using GCC plug-ins, developers can di- piler source files, a difficult and error prone task. As rectly affect code compilation, without actually modi- Section 3 explains, GNU Compiler Collection (GCC) fying the source code of GCC. While this makes ap- plug-ins are code transformations which do not require plying a completed plug-in easy, plug-in development the developer modify the compiler source itself [6]. Al- is transformation development nonetheless: an arduous though this makes the application and deployment of task. The plug-in developer is required to have the same completed transformations a relatively simple process, thorough understanding of compiler internals, complex plug-in development is an arduous task. compiler internal representations, and non-trivial source to internal representation mappings as any other trans- The GCC developer community has a great deal of ex- formation developer. -
Professional Linux Programming.Pdf
01_776130 ffirs.qxp 2/2/07 10:13 PM Page iii Professional Linux® Programming Jon Masters Richard Blum 01_776130 ffirs.qxp 2/2/07 10:13 PM Page ii 01_776130 ffirs.qxp 2/2/07 10:13 PM Page i Professional Linux® Programming 01_776130 ffirs.qxp 2/2/07 10:13 PM Page ii 01_776130 ffirs.qxp 2/2/07 10:13 PM Page iii Professional Linux® Programming Jon Masters Richard Blum 01_776130 ffirs.qxp 2/2/07 10:13 PM Page iv Professional Linux® Programming Published by Wiley Publishing, Inc. 10475 Crosspoint Boulevard Indianapolis, IN 46256 www.wiley.com Copyright © 2007 by Wiley Publishing, Inc., Indianapolis, Indiana Published simultaneously in Canada Manufactured in the United States of America 10 9 8 7 6 5 4 3 2 1 Library of Congress Cataloging-in-Publication Data: Masters, Jon, 1981- Professional Linux programming / Jon Masters, Richard Blum. p. cm. Includes index. ISBN: 978-0-471-77613-0 (paper/website) 1. Linux. 2. Operating systems (Computers) I. Blum, Richard, 1962- II. Title. QA76.76.O63M37153 2007 005.4’32—dc22 2006102202 No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without either the prior written permission of the Publisher, or authorization through payment of the appropriate per-copy fee to the Copyright Clearance Center, 222 Rosewood Drive, Danvers, MA 01923, (978) 750-8400, fax (978) 646-8600.