Systems Programming in C++ Practical Course
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J1939 Data Mapping Explained
J1939 Data Mapping Explained Part No. BW2031 Revision: 1.05 May 18, 2018 Pyramid Solutions, Inc. 30200 Telegraph Road, Suite 440 Bingham Farms, MI 48025 www.pyramidsolutions.com | P: 248.549.1200 | F: 248.549.1400 © Pyramid Solutions 1 PUB-BW4031-001 Table of Contents Overview ......................................................................................................................... 2 J1939 Message Terminology ............................................................................................ 2 J1939 PGN Message Definitions ....................................................................................... 3 PGN and Parameter Documentation Examples ........................................................................ 3 J1939 Specification Example ........................................................................................................ 3 Parameter Table Example ............................................................................................................ 5 Determining the BridgeWay Data Table Layout ................................................................ 6 Data Table Layout for Modbus RTU and Modbus TCP (Big Endian) ........................................... 6 Data Table Layout for EtherNet/IP (Little Endian) .................................................................... 7 Configuring the BridgeWay I/O Mapping ......................................................................... 8 Configuration Attributes ........................................................................................................ -
Advanced Software Engineering with C++ Templates Lecture 4: Separate Compilation and Templates III
Advanced Software Engineering with C++ Templates Lecture 4: Separate Compilation and Templates III Thomas Gschwind <thgatzurichdotibmdotcom> Agenda . Separate Compilation • Introduction (C++ versus Java) • Variables • Routines (Functions & Operators) • Types (Structures, Classes) • Makefiles . Templates III • Design and Implementation (C++ versus Java versus C#) • “Dynamic” Static Algorithm Selection • Binders Th. Gschwind. Fortgeschrittene Programmierung in C++. 2 Separate Compilation . Why? • Having only one source file is unrealistic • Break the code up into its logical structure • Reduction of compile time - Only changed parts need to be recompiled . How? • Use multiple source files • Need to know what information about functions and variables “used” from other files Th. Gschwind. Fortgeschrittene Programmierung in C++. 3 Separate Compilation in Java . Each Java file is compiled into a class file . If a Java class invokes a method of another class, the compiler consults that other class file to • Determine whether the class provides the requested method • Determine whether a class file implements a given interface • etc. • Hence, the .class file contains the entire interface . That’s why in Java, the compiler needs the class path . Finally, all class files are loaded by the Java Virtual Machine (and “linked”) . Java source code can be relatively well reconstructed from .class file (see Java Decompiler: jd, jad) Th. Gschwind. Fortgeschrittene Programmierung in C++. 4 Some Java Trivia . Let us write Hello World in Java . In order to simplify the reconfiguration (e.g., translation) • Put all the constants into one Java file • Put the complex application code into another public class Const { public static final String msg="Hello World!"; } public class Cool { public static void main(String[] args) { System.out.println(Const.msg); } } Th. -
P2356R0 Date 2021-04-09 Reply-To Matus Chochlik [email protected] Audience SG7 Overview Details
Overview Details Implementing Factory builder on top of P2320 Document Number P2356R0 Date 2021-04-09 Reply-to Matus Chochlik [email protected] Audience SG7 Overview Details The goal (Semi-)automate the implementation of the Factory design pattern Overview Details What is meant by \Factory" here? • Class that constructs instances of a \Product" type. • From some external representation: • XML, • JSON, • YAML, • a GUI, • a scripting language, • a relational database, • ... Overview Details Factory builder • Framework combining the following parts • Meta-data • obtained from reflection. • Traits • units of code that handle various stages of construction, • specific to a particular external representation, • provided by user. Overview Details Factory builder • Used meta-data • type name strings, • list of meta-objects reflecting constructors, • list of meta-objects reflecting constructor parameters, • parameter type, • parameter name, • ... Overview Details Factory builder • Units handling the stages of construction • selecting the \best" constructor, • invoking the selected constructor, • conversion of parameter values from the external representation, • may recursively use factories for composite parameter types. Overview Details Used reflection features • ^T • [: :]1 • meta::name_of • meta::type_of • meta::members_of • meta::is_constructor • meta::is_default_constructor • meta::is_move_constructor • meta::is_copy_constructor • meta::parameters_of • size(Range) • range iterators 1to get back the reflected type Overview Details Reflection review • The good2 • How extensive and powerful the API is • The bad • Didn't find much3 • The ugly • Some of the syntax4 2great actually! 3some details follow 4but then this is a matter of personal preference Overview Details What is missing • The ability to easily unpack meta-objects from a range into a template, without un-reflecting them. • I used the following workaround + make_index_sequence: template <typename Iterator > consteval auto advance(Iterator it, size_t n) { while (n-- > 0) { ++ it; } return it; } • Details follow. -
XL C/C++ for AIX, V13.1.2 IBM
IBM XL C/C++ for AIX, V13.1.2 IBM Optimization and Programming Guide Version 13.1.2 SC27-4261-01 IBM XL C/C++ for AIX, V13.1.2 IBM Optimization and Programming Guide Version 13.1.2 SC27-4261-01 Note Before using this information and the product it supports, read the information in “Notices” on page 185. First edition This edition applies to IBM XL C/C++ for AIX, V13.1.2 (Program 5765-J07; 5725-C72) and to all subsequent releases and modifications until otherwise indicated in new editions. Make sure you are using the correct edition for the level of the product. © Copyright IBM Corporation 1996, 2015. US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract with IBM Corp. Contents About this document ........ vii Using a heap ............. 33 Who should read this document ....... vii Getting information about a heap ...... 34 How to use this document ......... vii Closing and destroying a heap ....... 34 How this document is organized ....... vii Changing the default heap used in a program .. 35 Conventions .............. viii Compiling and linking a program with Related information ........... xii user-created heaps ........... 35 IBM XL C/C++ information ........ xii Example of a user heap with regular memory .. 35 Standards and specifications ....... xiii Debugging memory heaps ......... 36 Other IBM information ......... xiv Functions for checking memory heaps .... 37 Other information ........... xiv Functions for debugging memory heaps .... 37 Technical support ............ xiv Using memory allocation fill patterns..... 39 How to send your comments ........ xiv Skipping heap checking ......... 39 Using stack traces ........... 40 Chapter 1. -
CM-5 C* User's Guide
The Connection Machine System CM-5 C* User's Guide ---------__------- . Version 7.1 May 1993 Thinking Machines Corporation Cambridge, Massachusetts Frst printing, May 1993 The informatiaonin this document is subject to change without notice and should not be constnued as a commitmentby ThinngMacMachines po Thk Machinesreservestheright toae changesto any product described herein Although the information inthis document has beenreviewed and is believed to bereliable, Thinldng Machines Coaporation assumes no liability for erns in this document Thinklng Machines does not assume any liability arising from the application or use of any information or product described herein Connection Machine is a registered traemark of Thinking Machines Corporation. CM and CM-5 are trademarks of Thinking Machines Corpoation. CMosr, Prism, and CMAX are trademaks of Thinking Machines Corporation. C*4is a registered trademark of Thinking Machines Corporation CM Fortran is a trademark of Thinking Machines Corporation CMMD,CMSSL, and CMXIl are tdemarks of Thinking Machines Corporation. Thinking Machines is a registered trademark of Thinking Machines Corporatin. SPARCand SPARCstationare trademarks of SPARCintematinal, Inc. Sun, Sun,4, and Sun Workstation are trademarks of Sun Microsystems, Inc. UNIX is a registered trademark of UNIX System Laboratoies, Inc. The X Window System is a trademark of the Massachusetts Institute of Technology. Copyright © 1990-1993 by Thinking Machines Corporatin. All rights reserved. Thinking Machines Corporation 245 First Street Cambridge, Massachusetts 02142-1264 (617) 234-1000 Contents About This Manual .......................................................... viU Custom Support ........................................................ ix Chapter 1 Introduction ........................................ 1 1.1 Developing a C* Program ........................................ 1 1.2 Compiling a C* Program ......................................... 1 1.3 Executing a C* Program ........................................ -
Metaclasses: Generative C++
Metaclasses: Generative C++ Document Number: P0707 R3 Date: 2018-02-11 Reply-to: Herb Sutter ([email protected]) Audience: SG7, EWG Contents 1 Overview .............................................................................................................................................................2 2 Language: Metaclasses .......................................................................................................................................7 3 Library: Example metaclasses .......................................................................................................................... 18 4 Applying metaclasses: Qt moc and C++/WinRT .............................................................................................. 35 5 Alternatives for sourcedefinition transform syntax .................................................................................... 41 6 Alternatives for applying the transform .......................................................................................................... 43 7 FAQs ................................................................................................................................................................. 46 8 Revision history ............................................................................................................................................... 51 Major changes in R3: Switched to function-style declaration syntax per SG7 direction in Albuquerque (old: $class M new: constexpr void M(meta::type target, -
Generic Programming
Generic Programming July 21, 1998 A Dagstuhl Seminar on the topic of Generic Programming was held April 27– May 1, 1998, with forty seven participants from ten countries. During the meeting there were thirty seven lectures, a panel session, and several problem sessions. The outcomes of the meeting include • A collection of abstracts of the lectures, made publicly available via this booklet and a web site at http://www-ca.informatik.uni-tuebingen.de/dagstuhl/gpdag.html. • Plans for a proceedings volume of papers submitted after the seminar that present (possibly extended) discussions of the topics covered in the lectures, problem sessions, and the panel session. • A list of generic programming projects and open problems, which will be maintained publicly on the World Wide Web at http://www-ca.informatik.uni-tuebingen.de/people/musser/gp/pop/index.html http://www.cs.rpi.edu/˜musser/gp/pop/index.html. 1 Contents 1 Motivation 3 2 Standards Panel 4 3 Lectures 4 3.1 Foundations and Methodology Comparisons ........ 4 Fundamentals of Generic Programming.................. 4 Jim Dehnert and Alex Stepanov Automatic Program Specialization by Partial Evaluation........ 4 Robert Gl¨uck Evaluating Generic Programming in Practice............... 6 Mehdi Jazayeri Polytypic Programming........................... 6 Johan Jeuring Recasting Algorithms As Objects: AnAlternativetoIterators . 7 Murali Sitaraman Using Genericity to Improve OO Designs................. 8 Karsten Weihe Inheritance, Genericity, and Class Hierarchies.............. 8 Wolf Zimmermann 3.2 Programming Methodology ................... 9 Hierarchical Iterators and Algorithms................... 9 Matt Austern Generic Programming in C++: Matrix Case Study........... 9 Krzysztof Czarnecki Generative Programming: Beyond Generic Programming........ 10 Ulrich Eisenecker Generic Programming Using Adaptive and Aspect-Oriented Programming . -
User's Manual
rBOX610 Linux Software User’s Manual Disclaimers This manual has been carefully checked and believed to contain accurate information. Axiomtek Co., Ltd. assumes no responsibility for any infringements of patents or any third party’s rights, and any liability arising from such use. Axiomtek does not warrant or assume any legal liability or responsibility for the accuracy, completeness or usefulness of any information in this document. Axiomtek does not make any commitment to update the information in this manual. Axiomtek reserves the right to change or revise this document and/or product at any time without notice. No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of Axiomtek Co., Ltd. Trademarks Acknowledgments Axiomtek is a trademark of Axiomtek Co., Ltd. ® Windows is a trademark of Microsoft Corporation. Other brand names and trademarks are the properties and registered brands of their respective owners. Copyright 2014 Axiomtek Co., Ltd. All Rights Reserved February 2014, Version A2 Printed in Taiwan ii Table of Contents Disclaimers ..................................................................................................... ii Chapter 1 Introduction ............................................. 1 1.1 Specifications ...................................................................................... 2 Chapter 2 Getting Started ...................................... -
Red Hat Developer Toolset 9 User Guide
Red Hat Developer Toolset 9 User Guide Installing and Using Red Hat Developer Toolset Last Updated: 2020-08-07 Red Hat Developer Toolset 9 User Guide Installing and Using Red Hat Developer Toolset Zuzana Zoubková Red Hat Customer Content Services Olga Tikhomirova Red Hat Customer Content Services [email protected] Supriya Takkhi Red Hat Customer Content Services Jaromír Hradílek Red Hat Customer Content Services Matt Newsome Red Hat Software Engineering Robert Krátký Red Hat Customer Content Services Vladimír Slávik Red Hat Customer Content Services Legal Notice Copyright © 2020 Red Hat, Inc. The text of and illustrations in this document are licensed by Red Hat under a Creative Commons Attribution–Share Alike 3.0 Unported license ("CC-BY-SA"). An explanation of CC-BY-SA is available at http://creativecommons.org/licenses/by-sa/3.0/ . In accordance with CC-BY-SA, if you distribute this document or an adaptation of it, you must provide the URL for the original version. Red Hat, as the licensor of this document, waives the right to enforce, and agrees not to assert, Section 4d of CC-BY-SA to the fullest extent permitted by applicable law. Red Hat, Red Hat Enterprise Linux, the Shadowman logo, the Red Hat logo, JBoss, OpenShift, Fedora, the Infinity logo, and RHCE are trademarks of Red Hat, Inc., registered in the United States and other countries. Linux ® is the registered trademark of Linus Torvalds in the United States and other countries. Java ® is a registered trademark of Oracle and/or its affiliates. XFS ® is a trademark of Silicon Graphics International Corp. -
RICH: Automatically Protecting Against Integer-Based Vulnerabilities
RICH: Automatically Protecting Against Integer-Based Vulnerabilities David Brumley, Tzi-cker Chiueh, Robert Johnson [email protected], [email protected], [email protected] Huijia Lin, Dawn Song [email protected], [email protected] Abstract against integer-based attacks. Integer bugs appear because programmers do not antici- We present the design and implementation of RICH pate the semantics of C operations. The C99 standard [16] (Run-time Integer CHecking), a tool for efficiently detecting defines about a dozen rules governinghow integer types can integer-based attacks against C programs at run time. C be cast or promoted. The standard allows several common integer bugs, a popular avenue of attack and frequent pro- cases, such as many types of down-casting, to be compiler- gramming error [1–15], occur when a variable value goes implementation specific. In addition, the written rules are out of the range of the machine word used to materialize it, not accompanied by an unambiguous set of formal rules, e.g. when assigning a large 32-bit int to a 16-bit short. making it difficult for a programmer to verify that he un- We show that safe and unsafe integer operations in C can derstands C99 correctly. Integer bugs are not exclusive to be captured by well-known sub-typing theory. The RICH C. Similar languages such as C++, and even type-safe lan- compiler extension compiles C programs to object code that guages such as Java and OCaml, do not raise exceptions on monitors its own execution to detect integer-based attacks. -
The Complete Guide to Return X;
The Complete Guide to return x; I also do C++ training! [email protected] Arthur O’Dwyer 2021-05-04 Outline ● The “return slot”; NRVO; C++17 “deferred materialization” [4–23] ● C++11 implicit move [24–29]. Question break. ● Problems in C++11; solutions in C++20 [30–46]. Question break. ● The reference_wrapper saga; pretty tables of vendor divergence [47–55] ● Quick sidebar on coroutines and related topics [56–65]. Question break. ● P2266 proposed for C++23 [66–79]. Questions! Hey look! Slide numbers! 3 x86-64 calling convention int f() { _Z1fv: int i = 42; movl $42, -4(%rsp) return i; movl -4(%rsp), %eax } retq int test() _Z4testv: { callq _Z1fv int j = f(); addl $1, %eax return j + 1; retq } On x86-64, the function’s return value usually goes into the %eax register. 4 x86-64 calling convention Stack Segment int f() { Since f and test each have their own int i = 42; f i printf("%p\n", &i); stack frame, i and j naturally are different return i; prints “0x9ff00020” variables. } test j j is initialized with a int test() { copy of i — C++ : int j = f(); loves copy semantics. : printf("%p\n", &j); : return j + 1; prints “0x9ff00040” } main 5 x86-64 calling convention Stack Segment struct S { int m; }; Even for class types, C++ does “return by f i S f() { copy.” prints “ ” S i = S{42}; 0x9ff00020 The return value is printf("%p\n", &i); still passed in a test j return i; machine register } when possible. : : S test() { : S j = f(); prints “0x9ff00040” printf("%p\n", &j); main return j; } 6 x86-64 calling convention But what about when Stack Segment struct S { int m[3]; }; S is too big to fit in a register? S f() { f i Then x86-64 says that S i = S{{1,3,5}}; the caller should pass printf("%p\n", &i); an extra parameter, return i; pointing to space in } the caller’s own : return slot stack frame big : S test() { enough to hold the test: S j = f(); result. -
Reference Guide for X86-64 Cpus
REFERENCE GUIDE FOR X86-64 CPUS Version 2019 TABLE OF CONTENTS Preface............................................................................................................. xi Audience Description.......................................................................................... xi Compatibility and Conformance to Standards............................................................ xi Organization....................................................................................................xii Hardware and Software Constraints...................................................................... xiii Conventions....................................................................................................xiii Terms............................................................................................................xiv Related Publications.......................................................................................... xv Chapter 1. Fortran, C, and C++ Data Types................................................................ 1 1.1. Fortran Data Types....................................................................................... 1 1.1.1. Fortran Scalars.......................................................................................1 1.1.2. FORTRAN real(2).....................................................................................3 1.1.3. FORTRAN 77 Aggregate Data Type Extensions.................................................. 3 1.1.4. Fortran 90 Aggregate Data Types (Derived