Storing Clang Data. For IDEs and static analysis. Marc-André Laperle, Ericsson
|
|
|
- Jonathan Parker
- 5 years ago
- Views:
Transcription
1 Storing Clang Data For IDEs and static analysis Marc-André Laperle, Ericsson
2 AGENDA 1 Introductions 2 3 What do we want to store 4 What kind of format 5 What is being done now Discussions Ericsson AB Page 2
3 Introductions Marc-André Laperle Software Developer at Ericsson since 2013 Eclipse committer for CDT (C/C++) and several other projects New-ish LLVM/Clang contributor (early 2017) Enthusiastic about C/C++, IDEs and tooling in general (Not a compiler expert! Yet?) Your turn! Ericsson AB Page 3
4 What is being done now Some ongoing things in Clang and Clang extra Xcode 9 s Index-while-building Clangd s indexing Clang Static Analyzer s Cross-TU feature Regular improvements to Clang/Index Ericsson AB Page 4
5 Xcode 9 Index-while-building Source: Ericsson AB Page 5
6 Xcode 9 Index-while-building Source: Ericsson AB Page 6
7 Xcode 9 Index-while-building Source: Ericsson AB Page 7
8 Clangd s ClangdIndexDataStorage Malloc-like interface to writing in a file Stores raw bytes, ints, string and pointers (to other locations in the file) Inspired from CDT s database Ericsson AB Page 8
9 Clangd s ClangdIndexDataStorage File layout 0 File version 4 Linked list to free blocks of 8 bytes 8 Linked list to free blocks of 16 bytes Linked list to free blocks of 4096B 2052 User data (Blocks) Data block 0 Block size 2..size Free block 0 Free block size 2 Pointer to next free block of same size 6..size Any user data Unused (until it becomes a data block) Ericsson AB Page 9
10 Clangd s ClangdIndexDataStorage { Data block Free block Free Data Data Free Data 4K pieces Data Free Data { Data Data Data Free Data Data Cache! Data Free Free Data Ericsson AB Page 10
11 Clangd s BTree Tree with nodes containing multiple children Balanced Logarithmic insertion, search, deletion B D A C E F Ericsson AB Page 11
12 Clangd s BTree Keys are pointers to data in ClangdIndexDataStorage ClangdIndexFile Path: B.cpp Occurrences, etc ClangdIndexFile Path: C.cpp Occurrences, etc Ericsson AB Page 12
13 Clangd s Index Model ClangdIndexFile -Path -First Occurrence (linked list) * * ClangdIndexOccurrence -NextForSymbol (linked list) -NextInFile (linked list) -Location -Roles -Symbol ClangdIndex -BTree of Files -BTree of Symbols * ClangdIndexSymbol -USR -FirstOccurrence (linked list) Ericsson AB Page 13
14 Clang Static Analyzer When an analysis is executed, a function to file location mapping is generated in a file externalfnmap.txt Other stored information would be useful for performance: A call graph would help incremental Cross-TU analysis An include graph would help to know which build commands need to be reanalyzed when a file changes Ericsson AB Page 14
15 What do we want to store Symbols Occurrences (calls, references, definitions, declarations, relations) File dependencies Static analysis checker-specific information (per symbol, per function function definition, etc). I.e. make the model extensible Ability to not store some information (field occurrences, etc) Ericsson AB Page 15
16 What kind of format Xcode s libindexstore (LLVM Bitstream) Not yet fully upstreamed to Clang (Swift Github) Format used for Index-while-building Needs liblmdb as new dependency for mappings (or need to replace with something else) Ericsson AB Page 16
17 What kind of format Clangd s IndexStorage Not yet upstreamed to Clang (Github) Stand-alone (no new dependency) Not production ready yet Not created with Index-while-building in mind, but libindexstore could be used as input Ericsson AB Page 17
18 What kind of format Third-party Databases Some are just too big dependencies to include in Clang (MySQL, PostgreSQL, etc) Smaller ones interesting: SQLite, LMDB. LMDB is quite simple and fast, could be used in combination of other formats (libindexstore, ClangdIndexStorage) How likely would a third-party database be accepted in LLVM repos? Ericsson AB Page 18
19 What kind of format How could other tools reuse this? Link libclangindex? Link libclangdaemon Launch Clangd, communicate with JSON-RPC All of the above? Ericsson AB Page 19
20 Things considered for Clangd Index-While-Building feature in Xcode 9 should be reused. The index store could be used (instead of ClangdIndexStorage). Or used as input to ClangdIndexStorage. Move some indexing logic to Clang/Index instead of Clangd, for others to reuse Make indexing extensible enough so that other tools can add information to the index (Clang Static Analyzer) Use liblmdb, for symbol mapping, similar to Xcode Support for multiple indexes for merging different projects, libraries, etc Use linking information (compile_commands.json) in order to solve the multiple definitions problem Ericsson AB Page 20
21 References Clangd: Clang Static Analyzer: Clang mailing list: Xcode s Index-while-building: Ericsson AB Page 21
22 BoF Notes/Minutes Ericsson AB Page 22
Advancing Clangd. Bringing persisted indexing to Clang tooling. Marc-André Laperle, Ericsson
Advancing Clangd Bringing persisted indexing to Clang tooling Marc-André Laperle, Ericsson AGENDA 1 Introductions 2 3 The road to persisted indexing 4 Current state 5 What s new in Clangd Future and challenges
CodeCompass an Open Software Comprehension Framework
CodeCompass an Open Software Comprehension Framework Zoltán Porkoláb 1,2, Dániel Krupp 1, Tibor Brunner 2, Márton Csordás 2 https://github.com/ericsson/codecompass Motto: If it was hard to write it should
Optimizing for Bugs Fixed
Optimizing for Bugs Fixed The Design Principles behind the Clang Static Analyzer Anna Zaks, Manager of Program Analysis Team @ Apple What is This Talk About? LLVM/clang project Overview of the Clang Static
Heap Arrays. Steven R. Bagley
Heap Arrays Steven R. Bagley Recap Data is stored in variables Can be accessed by the variable name Or in an array, accessed by name and index a[42] = 35; Variables and arrays have a type int, char, double,
Physical Level of Databases: B+-Trees
Physical Level of Databases: B+-Trees Adnan YAZICI Computer Engineering Department METU (Fall 2005) 1 B + -Tree Index Files l Disadvantage of indexed-sequential files: performance degrades as file grows,
LLVMLinux: x86 Kernel Build
LLVMLinux: x86 Kernel Build Presented by: Jan-Simon Möller Presentation Date: 2012.08.30 Topics Common issues (x86 perspective) Specific Issues with Clang/LLVM Specific Issues with the Linux Kernel Status
CS61C : Machine Structures
inst.eecs.berkeley.edu/~cs61c/su06 CS61C : Machine Structures Lecture #6: Memory Management CS 61C L06 Memory Management (1) 2006-07-05 Andy Carle Memory Management (1/2) Variable declaration allocates
Types II. Hwansoo Han
Types II Hwansoo Han Arrays Most common and important composite data types Homogeneous elements, unlike records Fortran77 requires element type be scalar Elements can be any type (Fortran90, etc.) A mapping
CS 536 Introduction to Programming Languages and Compilers Charles N. Fischer Lecture 11
CS 536 Introduction to Programming Languages and Compilers Charles N. Fischer Lecture 11 CS 536 Spring 2015 1 Handling Overloaded Declarations Two approaches are popular: 1. Create a single symbol table
At this time we have all the pieces necessary to allocate memory for an array dynamically. Following our example, we allocate N integers as follows:
Pointers and Arrays Part II We will continue with our discussion on the relationship between pointers and arrays, and in particular, discuss how arrays with dynamical length can be created at run-time
CDT 7.0 Helios Release Review. Planned Review Date: June 11, 2010 Communication Channel: cdt-dev Doug Schaefer
CDT 7.0 Helios Release Review Planned Review Date: June 11, 2010 Communication Channel: cdt-dev Doug Schaefer Introduction The CDT (C/C++ Development Tools) project builds a platform that supports edit,
Git Workflows. Sylvain Bouveret, Grégory Mounié, Matthieu Moy
s Sylvain Bouveret, Grégory Mounié, Matthieu Moy 2017 [first].[last]@imag.fr http://recherche.noiraudes.net/resources/git/git-workflow-slides.pdf 1 / 16 Goals of the presentation Global history: multiple
Signals Documentation
Signals Documentation Release 0.1 Yeti November 22, 2015 Contents 1 Quickstart 1 2 What is Signals? 3 3 Contents 5 3.1 Get Started................................................ 5 3.2 Try the Demo Server...........................................
Project C: B+Tree. This project may be done in groups of up to three people.
Project C: B+Tree In this last project, you will implement a B+Tree index in C++. At the end of the project, you will have a C++ class that conforms to a specific interface. Your class is then used by
APT Session 4: C. Software Development Team Laurence Tratt. 1 / 14
APT Session 4: C Laurence Tratt Software Development Team 2017-11-10 1 / 14 http://soft-dev.org/ What to expect from this session 1 C. 2 / 14 http://soft-dev.org/ Prerequisites 1 Install either GCC or
pybdg Documentation Release 1.0.dev2 Outernet Inc
pybdg Documentation Release 1.0.dev2 Outernet Inc April 17, 2016 Contents 1 Source code 3 2 License 5 3 Documentation 7 Python Module Index 15 i ii Bitloads, or bit payloads, are compact payloads containing
CSE 530A. B+ Trees. Washington University Fall 2013
CSE 530A B+ Trees Washington University Fall 2013 B Trees A B tree is an ordered (non-binary) tree where the internal nodes can have a varying number of child nodes (within some range) B Trees When a key
Programming Languages
Programming Languages Tevfik Koşar Lecture - VIII February 9 th, 2006 1 Roadmap Allocation techniques Static Allocation Stack-based Allocation Heap-based Allocation Scope Rules Static Scopes Dynamic Scopes
Run-time Environments -Part 3
Run-time Environments -Part 3 Y.N. Srikant Computer Science and Automation Indian Institute of Science Bangalore 560 012 NPTEL Course on Compiler Design Outline of the Lecture Part 3 What is run-time support?
FPLLL. Contributing. Martin R. Albrecht 2017/07/06
FPLLL Contributing Martin R. Albrecht 2017/07/06 Outline Communication Setup Reporting Bugs Topic Branches and Pull Requests How to Get your Pull Request Accepted Documentation Overview All contributions
Faster, Stronger C++ Analysis with the Clang Static Analyzer. George Karpenkov, Apple Artem Dergachev, Apple
Faster, Stronger C++ Analysis with the Clang Static Analyzer George Karpenkov, Apple Artem Dergachev, Apple Agenda Introduction to Clang Static Analyzer Using coverage-based iteration order Improved C++
Introducing LLDB for Linux on Arm and AArch64. Omair Javaid
Introducing LLDB for Linux on Arm and AArch64 Omair Javaid Agenda ENGINEERS AND DEVICES WORKING TOGETHER Brief introduction and history behind LLDB Status of LLDB on Linux and Android Linaro s contributions
void setup(){ void loop() { The above setup works, however the function is limited in the fact it can not be reused easily. To make the code more gene
Passing arrays to functions A big topic for beginners is how to write a function that can be passed an array. A very common way of achieving this is done using pointers. This method can be seen all through
E&CE 454/750-5: Spring 2010 Programming Assignment 1 Due: 11:59 PM Friday 11 th June 2010
E&CE 454/750-5: Spring 2010 Programming Assignment 1 Due: 11:59 PM Friday 11 th June 2010 For this assignment you are required to implement a crude version of Remote Procedure Call (RPC). Normally this
Final CSE 131B Spring 2004
Login name Signature Name Student ID Final CSE 131B Spring 2004 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 (25 points) (24 points) (32 points) (24 points) (28 points) (26 points) (22 points)
How to git with proper etiquette
How to git with proper etiquette Let's start fixing how we use git here in crew so our GitHub looks even more awesome and you all get experience working in a professional-like git environment. How to use
Bypassing Memory Leak in Modern C++ Realm
Annales Mathematicae et Informaticae 48 (2018) pp. 43 50 http://ami.uni-eszterhazy.hu Bypassing Memory Leak in Modern C++ Realm Dorottya Papp, Norbert Pataki Dept. of Programming Languages and Compilers,
Advanced Debugging and the Address Sanitizer
Developer Tools #WWDC15 Advanced Debugging and the Address Sanitizer Finding your undocumented features Session 413 Mike Swingler Xcode UI Infrastructure Anna Zaks LLVM Program Analysis 2015 Apple Inc.
pointers + memory double x; string a; int x; main overhead int y; main overhead
pointers + memory computer have memory to store data. every program gets a piece of it to use as we create and use more variables, more space is allocated to a program memory int x; double x; string a;
Run-time Environments - 3
Run-time Environments - 3 Y.N. Srikant Computer Science and Automation Indian Institute of Science Bangalore 560 012 NPTEL Course on Principles of Compiler Design Outline of the Lecture n What is run-time
BuildPal Documentation
BuildPal Documentation Release 0.1.1 PKE sistemi August 05, 2014 Contents 1 Introduction 3 1.1 What is it?................................................ 3 1.2 Why another distributed compiler?...................................
Pointers II. Class 31
Pointers II Class 31 Compile Time all of the variables we have seen so far have been declared at compile time they are written into the program code you can see by looking at the program how many variables
Pointers in C/C++ 1 Memory Addresses 2
Pointers in C/C++ Contents 1 Memory Addresses 2 2 Pointers and Indirection 3 2.1 The & and * Operators.............................................. 4 2.2 A Comment on Types - Muy Importante!...................................
Pointer Analysis for C/C++ with cclyzer. George Balatsouras University of Athens
Pointer Analysis for C/C++ with cclyzer George Balatsouras University of Athens Analyzes C/C++ programs translated to LLVM Bitcode Declarative framework Analyzes written in Datalog
My malloc: mylloc and mhysa. Johan Montelius HT2016
1 Introduction My malloc: mylloc and mhysa Johan Montelius HT2016 So this is an experiment where we will implement our own malloc. We will not implement the world s fastest allocator, but it will work
Heap Arrays and Linked Lists. Steven R. Bagley
Heap Arrays and Linked Lists Steven R. Bagley Recap Data is stored in variables Can be accessed by the variable name Or in an array, accessed by name and index Variables and arrays have a type Create our
Intermediate Programming, Spring 2017*
600.120 Intermediate Programming, Spring 2017* Misha Kazhdan *Much of the code in these examples is not commented because it would otherwise not fit on the slides. This is bad coding practice in general
Meeting of the Technical Steering Committee (TSC) Board
http://openhpc.community Meeting of the Technical Steering Committee (TSC) Board Tuesday, October 17th 11:00am ET Meeting Logistics https://www.uberconference.com/jeff_ef United States : +1 (510) 224-9559
Run-Time Data Structures
Run-Time Data Structures Static Structures For static structures, a fixed address is used throughout execution. This is the oldest and simplest memory organization. In current compilers, it is used for:
VMware s (Open Source) Way of Container. Dr. Udo Seidel
VMware s (Open Source) Way of Container Dr. Udo Seidel Agenda Introduction The Big Picture Open Source Dimensions Summary Sneak Preview Lots of text/data No demo No I am not working for Vmware VMware competitor
Recitation: C Review. TA s 20 Feb 2017
15-213 Recitation: C Review TA s 20 Feb 2017 Agenda Logistics Attack Lab Conclusion C Assessment C Programming Style C Exercise Cache Lab Overview Appendix: Valgrind Clang / LLVM Cache Structure Logistics
Low level security. Andrew Ruef
Low level security Andrew Ruef What s going on Stuff is getting hacked all the time We re writing tons of software Often with little regard to reliability let alone security The regulatory environment
The Life of an Open-Source Project
The Life of an Open-Source Project David Garcia Quintas Xoogler, grpc C Core Team dgquintas@gmail.com How I Got Here Agenda Why develop [a new project] in open-source. What is being developed: grpc. How
What is the Best Way for Children to Learn Computer Programming?
What is the Best Way for Children to Learn Computer Programming? Dr Alex Davidovic One of the defining characteristics of today s society is that the computers and mobile devices are the integral and natural
BuildPal Documentation
BuildPal Documentation Release 0.2 development PKE sistemi October 10, 2014 Contents 1 Introduction 3 1.1 What is it?................................................ 3 1.2 Why another distributed compiler?...................................
Static Analysis for C++ with Phasar
Static Analysis for C++ with Phasar Philipp Schubert philipp.schubert@upb.de Ben Hermann ben.hermann@upb.de Eric Bodden eric.bodden@upb.de Who are we? Philipp Schubert Chief Developer of PHASAR Teaches
Midterm 2. 7] Explain in your own words the concept of a handle class and how it s implemented in C++: What s wrong with this answer?
![Midterm 2. 7] Explain in your own words the concept of a handle class and how it s implemented in C++: What s wrong with this answer?](/thumbs/81/84523328.jpg "Midterm 2. 7] Explain in your own words the concept of a handle class and how it s implemented in C++: What s wrong with this answer?")
Midterm 2 7] Explain in your own words the concept of a handle class and how it s implemented in C++: What s wrong with this answer? A handle class is a pointer vith no visible type. What s wrong with
CS1622. Semantic Analysis. The Compiler So Far. Lecture 15 Semantic Analysis. How to build symbol tables How to use them to find
CS1622 Lecture 15 Semantic Analysis CS 1622 Lecture 15 1 Semantic Analysis How to build symbol tables How to use them to find multiply-declared and undeclared variables. How to perform type checking CS
Naming in OOLs and Storage Layout Comp 412
COMP 412 FALL 2018 Naming in OOLs and Storage Layout Comp 412 source IR IR target Front End Optimizer Back End Copyright 2018, Keith D. Cooper & Linda Torczon, all rights reserved. Students enrolled in
CSE Database Management Systems. York University. Parke Godfrey. Winter CSE-4411M Database Management Systems Godfrey p.
CSE-4411 Database Management Systems York University Parke Godfrey Winter 2014 CSE-4411M Database Management Systems Godfrey p. 1/16 CSE-3421 vs CSE-4411 CSE-4411 is a continuation of CSE-3421, right?
CS 241 Data Organization Binary Trees
CS 241 Data Organization Binary Trees Brooke Chenoweth University of New Mexico Fall 2017 Binary Tree: Kernighan and Ritchie 6.5 Read a file and count the occurrences of each word. now is the time for
INITIALISING POINTER VARIABLES; DYNAMIC VARIABLES; OPERATIONS ON POINTERS
INITIALISING POINTER VARIABLES; DYNAMIC VARIABLES; OPERATIONS ON POINTERS Pages 792 to 800 Anna Rakitianskaia, University of Pretoria INITIALISING POINTER VARIABLES Pointer variables are declared by putting
Language Reference Manual
TAPE: A File Handling Language Language Reference Manual Tianhua Fang (tf2377) Alexander Sato (as4628) Priscilla Wang (pyw2102) Edwin Chan (cc3919) Programming Languages and Translators COMSW 4115 Fall
Programming. Dr Ben Dudson University of York
Programming Dr Ben Dudson University of York Outline Last lecture covered the basics of programming and IDL This lecture will cover More advanced IDL and plotting Fortran and C++ Programming techniques
The COS 333 Project. Robert M. Dondero, Ph.D. Princeton University
The COS 333 Project Robert M. Dondero, Ph.D. Princeton University 1 Overview A simulation of reality In groups of 3-5 people... Build a substantial three tier software system 2 Three-Tier Systems "Three
What s New in the LLVM Compiler. Chris Lattner LLVM Chief Architect
What s New in the LLVM Compiler Chris Lattner LLVM Chief Architect 2 Apple Compiler Evolution Renovating the Apple compiler landscape Phasing out GCC-based tools Driving innovation in LLVM-based technologies
ITP 342 Advanced Mobile App Dev. Memory
ITP 342 Advanced Mobile App Dev Memory Memory Management Objective-C provides two methods of application memory management. 1. In the method described in this guide, referred to as manual retain-release
Binghamton University. CS-211 Fall Software Design
Software Design 1 Typical Life Cycle of an Application Requirements Evaluate Design Support Implement 2 Design starts from Specifications No good formal method of capturing specifications Figuring out
class 12 b-trees 2.0 prof. Stratos Idreos
class 12 b-trees 2.0 prof. Stratos Idreos HTTP://DASLAB.SEAS.HARVARD.EDU/CLASSES/CS165/ A B C A B C clustered/primary index on A Stratos Idreos /26 2 A B C A B C clustered/primary index on A pos C pos
CS61C : Machine Structures
inst.eecs.berkeley.edu/~cs61c CS61C : Machine Structures Lecture 7 More Memory Management CS 61C L07 More Memory Management (1) 2004-09-15 Lecturer PSOE Dan Garcia www.cs.berkeley.edu/~ddgarcia Star Wars
Section 4 SOLUTION: AVL Trees & B-Trees
Section 4 SOLUTION: AVL Trees & B-Trees 1. What 3 properties must an AVL tree have? a. Be a binary tree b. Have Binary Search Tree ordering property (left children < parent, right children > parent) c.
6.S096 Lecture 10 Course Recap, Interviews, Advanced Topics
6.S096 Lecture 10 Course Recap, Interviews, Advanced Topics Grab Bag & Perspective January 31, 2014 6.S096 Lecture 10 Course Recap, Interviews, Advanced Topics January 31, 2014 1 / 19 Outline 1 Perspective
Scientific Computing
Scientific Computing Martin Lotz School of Mathematics The University of Manchester Lecture 1, September 22, 2014 Outline Course Overview Programming Basics The C++ Programming Language Outline Course
Assist. Prof. Dr. Caner ÖZCAN
Assist. Prof. Dr. Caner ÖZCAN Memory Structure When a variable defined it is stored somewhere in memory. Memory can be thought as block consist of cells. When a variable defined, required number of cell
CS61C : Machine Structures
inst.eecs.berkeley.edu/~cs61c CS61C : Machine Structures Lecture 7 C Memory Management 2007-02-06 Hello to Said S. from Columbus, OH CS61C L07 More Memory Management (1) Lecturer SOE Dan Garcia www.cs.berkeley.edu/~ddgarcia
Operating Systems. File Systems. Thomas Ropars.
1 Operating Systems File Systems Thomas Ropars thomas.ropars@univ-grenoble-alpes.fr 2017 2 References The content of these lectures is inspired by: The lecture notes of Prof. David Mazières. Operating
Hello, World! in C. Johann Myrkraverk Oskarsson October 23, The Quintessential Example Program 1. I Printing Text 2. II The Main Function 3
Hello, World! in C Johann Myrkraverk Oskarsson October 23, 2018 Contents 1 The Quintessential Example Program 1 I Printing Text 2 II The Main Function 3 III The Header Files 4 IV Compiling and Running
CS61C : Machine Structures
inst.eecs.berkeley.edu/~cs61c CS61C : Machine Structures Lecture 7 C Memory Management!!Lecturer SOE Dan Garcia!!!www.cs.berkeley.edu/~ddgarcia CS61C L07 More Memory Management (1)! 2010-02-03! Flexible
OCLint Documentation. Release 0.7. Longyi Qi
OCLint Documentation Release 0.7 Longyi Qi June 24, 2013 CONTENTS 1 Overview 1 1.1 Features.................................................. 1 1.2 Current Status..............................................
New features in AddressSanitizer. LLVM developer meeting Nov 7, 2013 Alexey Samsonov, Kostya Serebryany
New features in AddressSanitizer LLVM developer meeting Nov 7, 2013 Alexey Samsonov, Kostya Serebryany Agenda AddressSanitizer (ASan): a quick reminder New features: Initialization-order-fiasco Stack-use-after-scope
A product of Byte Works, Inc. Credits Programming Mike Westerfield. Art Karen Bennett. Documentation Mike Westerfield
A product of Byte Works, Inc. http://www.byteworks.us Credits Programming Mike Westerfield Art Karen Bennett Documentation Mike Westerfield Copyright 2016 By The Byte Works, Inc. All Rights Reserved Apple,
Memory Management: The process by which memory is shared, allocated, and released. Not applicable to cache memory.
Memory Management Page 1 Memory Management Wednesday, October 27, 2004 4:54 AM Memory Management: The process by which memory is shared, allocated, and released. Not applicable to cache memory. Two kinds
Understanding Undefined Behavior
Session Developer Tools #WWDC17 Understanding Undefined Behavior 407 Fred Riss, Clang Team Ryan Govostes, Security Engineering and Architecture Team Anna Zaks, Program Analysis Team 2017 Apple Inc. All
Lecture 13: more class, C++ memory management
CIS 330: / / / / (_) / / / / _/_/ / / / / / \/ / /_/ / `/ \/ / / / _/_// / / / / /_ / /_/ / / / / /> < / /_/ / / / / /_/ / / / /_/ / / / / / \ /_/ /_/_/_/ _ \,_/_/ /_/\,_/ \ /_/ \ //_/ /_/ Lecture 13:
Lecture Set 4: More About Methods and More About Operators
Lecture Set 4: More About Methods and More About Operators Methods Definitions Invocations More arithmetic operators Operator Side effects Operator Precedence Short-circuiting main method public static
IP Log for DSDP/Device Debugging move of DSF, MI, and GDB components to CDT
IP Log for DSDP/Device Debugging move of DSF,, and GDB components to CDT Third-Party Code CQ Third-Party Code License Use No pre-req dependencies Committers Past and Present Active Name Organization Francois
CprE 288 Spring 2014 Homework 5 Due Fri. Feb. 21
CprE 288 Spring 2014 Homework 5 Due Fri. Feb. 21 Notes: Homework answers must be typed using a word editor. Homework is individual work. Adhere to the University s policy relating to the integrity of scholarship.
<Insert Picture Here> OpenJDK - When And How To Contribute To The Java SE Reference Implementation OSCON 2011, July 26th, 2011
OpenJDK - When And How To Contribute To The Java SE Reference Implementation OSCON 2011, July 26th, 2011 Dalibor Topić Java F/OSS Ambassador The following is intended to outline our
Introducing C++ David Chisnall. March 15, 2011
Introducing C++ David Chisnall March 15, 2011 Why Learn C++? Lots of people used it to write huge, unmaintainable code......which someone then gets paid a lot to maintain. C With Classes Predecessor of
COMSC-051 Java Programming Part 1. Part-Time Instructor: Joenil Mistal
COMSC-051 Java Programming Part 1 Part-Time Instructor: Joenil Mistal Chapter 5 5 Controlling the Flow of Your Program Control structures allow a programmer to define how and when certain statements will
CSE Lecture In Class Example Handout
CSE 30321 Lecture 07-08 In Class Example Handout Part A: J-Type Example: If you look in your book at the syntax for j (an unconditional jump instruction), you see something like: e.g. j addr would seemingly
However, in C we can group related variables together into something called a struct.
CIT 593: Intro to Computer Systems Lecture #21 (11/27/12) Structs Unlike Java, C++, and to some extent Python, C is not traditionally considered an objectoriented language. That is, there is no concept
CSE 15L Winter Midterm :) Review
CSE 15L Winter 2015 Midterm :) Review Makefiles Makefiles - The Overview Questions you should be able to answer What is the point of a Makefile Why don t we just compile it again? Why don t we just use
COMP 321: Introduction to Computer Systems
Assigned: 3/8/18, Due: 3/29/18 Important: This project may be done individually or in pairs. Be sure to carefully read the course policies for assignments (including the honor code policy) on the assignments
DevOps, Continuous Integration & Automated Testing: Rule Them All
DevOps, Continuous Integration & Automated Testing: Rule Them All SAMIR BEHARA Solution Architect EBSCO, Birmingham, AL DATABASE RELEASE? EMAIL THE SCRIPTS & I WILL EXECUTE IT Database Lifecycle Management
Mastering Xcode for iphone OS Development Part 1. Todd Fernandez Sr. Manager, IDEs
Mastering Xcode for iphone OS Development Part 1 Todd Fernandez Sr. Manager, IDEs 2 3 Customer Reviews Write a Review Current Version (1) All Versions (24) Gorgeous and Addictive Report a Concern by Play
MadCap Lingo at HPE Big Data
MadCap Lingo at HPE Big Data Dr. Uwe Schwenk L10N Coordinator August 10, 2017 Quality means doing it right when no one is looking. Henry Ford 2 AGENDA Environment Design structure and Goals Products in
Eclipse PDE and Bndtools
An Epic Split between OSGi Tooling Eclipse PDE and Bndtools created by Peter Kirschner for EclipseCon Europe 2014 Seminarräume 1-3 - Wednesday, October 29, 2014-10:30 to 11:05 copyright for Epic Split
LLVM IR Code Generations Inside YACC. Li-Wei Kuo
LLVM IR Code Generations Inside YACC Li-Wei Kuo LLVM IR LLVM code representation In memory compiler IR (Intermediate Representation) On-disk bitcode representation (*.bc) Human readable assembly language
Java Basics. Object Orientated Programming in Java. Benjamin Kenwright
Java Basics Object Orientated Programming in Java Benjamin Kenwright Outline Essential Java Concepts Syntax, Grammar, Formatting, Introduce Object-Orientated Concepts Encapsulation, Abstract Data, OO Languages,
CS211 Computers and Programming Matthew Harris and Alexa Sharp July 9, Boggle
Boggle If you are not familiar with the game Boggle, the game is played with 16 dice that have letters on all faces. The dice are randomly deposited into a four-by-four grid so that the players see the
Lesson 3 Introduction to Programming in C
jgromero@inf.uc3m.es Lesson 3 Introduction to Programming in C Programming Grade in Industrial Technology Engineering This work is licensed under a Creative Commons Reconocimiento-NoComercial-CompartirIgual
Finding Bugs Using Xcode Runtime Tools
Session Developer Tools #WWDC17 Finding Bugs Using Xcode Runtime Tools 406 Kuba Mracek, Program Analysis Engineer Vedant Kumar, Compiler Engineer 2017 Apple Inc. All rights reserved. Redistribution or
Memory and Addresses. Pointers in C. Memory is just a sequence of byte-sized storage devices.
Memory and Addresses Memory is just a sequence of byte-sized storage devices. 1 The bytes are assigned numeric addresses, starting with zero, just like the indexing of the cells of an array. It is the
Programs in memory. The layout of memory is roughly:
Memory 1 Programs in memory 2 The layout of memory is roughly: Virtual memory means that memory is allocated in pages or segments, accessed as if adjacent - the platform looks after this, so your program
NoSQL Unit & Travis CI Test Automation for NoSQL Databases
NoSQL Unit & Travis CI Test Automation for NoSQL Databases Tobias.Trelle@codecentric.de @tobiastrelle codecentric AG 1 Senior IT Consultant @ codecentric AG Java / JEE / EAI / RDBMS background Committer
Final CSE 131B Spring 2005
Login name Signature Name Student ID Final CSE 131B Spring 2005 Page 1 Page 2 Page 3 Page 4 Page 5 Page 6 Page 7 Page 8 (27 points) (24 points) (32 points) (24 points) (32 points) (26 points) (31 points)
Data Structure Series
Data Structure Series This series is actually something I started back when I was part of the Sweet.Oblivion staff, but then some things happened and I was no longer able to complete it. So now, after
Page 1. Agenda. Programming Languages. C Compilation Process
EE 472 Embedded Systems Dr. Shwetak Patel Assistant Professor Computer Science & Engineering Electrical Engineering Agenda Announcements C programming intro + pointers Shwetak N. Patel - EE 472 2 Programming
ComSpOC: 3D Buildings:
1 ComSpOC: http://apps.agi.com/satelliteviewer/ 3D Buildings: http://cesiumjs.org/newyork/ Red Bull X-Alps: http://www.redbullxalps.com/news/article/relive-the-day-10-battle.html NORAD Tracks Santa: http://cesiumjs.org/demos/noradtrackssanta.html