Sutter's Mill

MARCH 11, 2024

To talk about C++’s current safety problems and solutions well, I need to include the context of the broad landscape of security and safety threats facing all software. When I say “safety” unqualified here, I mean programming language safety, which benefits both software security and software safety. Acknowledgments.

C++ 139

C++ Programming Code Java 139

O'Reilly

OCTOBER 12, 2021

Kevlin Henney and I were riffing on some ideas about GitHub Copilot , the tool for automatically generating code base on GPT-3’s language model, trained on the body of code that’s in GitHub. First, we wondered about code quality. We know how to test whether or not code is correct (at least up to a certain limit).

Code 120

Code Programming C++ Testing 120

Percona

OCTOBER 12, 2023

It shows which code paths are more busy on the CPU in given samples. An example of a flame graph can be found below: Each box is a function in the stack, and wider boxes mean more time the system was busy on CPU on these functions. An example is kubectl-flame ( [link] ). ✔ Launching profiler. ✔ Profiling.

Code 114

Code Tuning C++ Benchmarking 114

HammerDB

MARCH 25, 2023

Docker build, example CLI scripts were added to build and run the TPROC-C workload in the Tcl language. these were enhanced to also add Python based scripts, and to include scripts for both TPROC-C and TPROC-H and a driver script for Linux environments. Copy Code Copied Use a different Browser ~/HammerDB-4.7$

C++ 83

C++ Virtualization Benchmarking Database 83

The Polyglot Developer

APRIL 1, 2019

I mentioned a few months ago that I was going to periodically go back to the basics when it comes to computer programming and application development. Building a Hello World Example C++ Application was a first example of what I was talking about. It works, but it isn’t the most elegant.

C++ 49

C++ Code Development Programming 49

O'Reilly

JANUARY 13, 2020

As we enter a new decade, we asked programming experts?—including The experimental DSL for code contracts gives developers the ability to provide guarantees about the ways that code behaves. Code contracts allow you to make these promises, and the compiler can use them to loosen compile-time checks.

Programming 130

Programming Java Google C++ 130

Brendan Gregg

JANUARY 1, 2019

So instead of a static HTML website, JavaScript lets you define mini programs that run on events like mouse clicks, which are run in a safe virtual machine in the browser. And with eBPF, instead of a fixed kernel, you can now write mini programs that run on events like disk I/O, which are run in a safe virtual machine in the kernel.

C++ 111

C++ Virtualization Programming Code 111

Sutter's Mill

JULY 20, 2019

Obligatory comment: The C++20 Eagle has wings. At noon today, July 20 2019, the ISO C++ committee completed its summer meeting in Cologne, Germany, hosted with thanks by Think-Cell, SIGS Datacom, SimuNova, Silexica, Meeting C++, Josuttis Eckstein, Xara, Volker Dörr, Mike Spertus, and the Standard C++ Foundation.

C++ 98

C++ Education Programming Design 98

Dynatrace

JANUARY 17, 2023

Code changes are often required to refine observability data. This results in site reliability engineers nudging development teams to add resource attributes, endpoints, and tokens to their source code. This example is a good starting point for exploratory analysis with context-aware Dynatrace Davis insights.

Analytics 280

Analytics Metrics Open Source Java 280

Nick Desaulniers

JULY 23, 2015

21st Century C by Ben Klemens. There are a few other useful tools that came to mind that I’ve used when working with C and C++ codebases. C & C++ codebases; running these tools on the code or adding them to the codebases. Code Formatters. with lots of C++ code have documents.

C++ 75

C++ Programming Open Source Code 75

Dynatrace

DECEMBER 13, 2023

That’s why many organizations are turning to generative AI—which uses its training data to create text, images, code, or other types of content that reflect its users’ natural language queries—and platform engineering to create new efficiencies and opportunities for innovation. No one will be around who fully understands the code.

Technology 203

Technology Technology Artificial Intelligence Analytics 203

Percona

JUNE 20, 2023

In order to understand “segmentation fault,” it is a must to know the basic idea of segmentation and its implementation in C programming. When we need to execute any program, it should be loaded into memory first. Here, memory is divided into equal sizes of partitions where the code of a program resides.

Programming 86

Programming C++ Database Virtualization 86

Brendan Gregg

DECEMBER 31, 2018

So instead of a static HTML website, JavaScript lets you define mini programs that run on events like mouse clicks, which are run in a safe virtual machine in the browser. And with eBPF, instead of a fixed kernel, you can now write mini programs that run on events like disk I/O, which are run in a safe virtual machine in the kernel.

C++ 52

C++ Virtualization Programming Code 52

PDC

AUGUST 2, 2019

In previous posts we have introduced the multiprocessing module which makes it possible to parallelize Python programs on shared memory systems. This module provides an object-oriented interface that resembles the message passing interface (MPI) , and hence allows Python programs to exploit multiple processors on multiple compute nodes.

Programming 64

Programming Code Processing Open Source 64

Official Blog - World Web Technology

AUGUST 27, 2023

For example, website design is very crucial to impress your website visitors. Similarly, using the best programming language for your website is also crucial. When it comes to programming languages, you will find many options, but PHP is the most viable option to choose. What is PHP? PHP is an acronym for Hypertext Preprocessor.

Development 98

Development Ecommerce Open Source Website 98

The Morning Paper

OCTOBER 17, 2019

HackPPL: a universal probabilistic programming language Ai et al., The Hack programming language, as the authors proudly tell us, is “ a dominant web development language across large technology firms with over 100 million lines of production code.” Let’s start with an example use case. MAPL’19.

Programming 50

Programming Social Media Media Open Source 50

O'Reilly

AUGUST 9, 2022

GitHub Copilot (based on a model named Codex , which is derived from GPT-3) generates code in a number of programming languages, based on comments that the user writes. Going in the other direction, GPT-3 has proven to be surprisingly good at explaining code. In the 1950s, computers were programmed in machine language.

Programming 105

Programming Java C++ Design 105

Sutter's Mill

APRIL 3, 2023

This time, we chatted about news in the C++ world, and then about my Cpp2 and cppfront experimental work. Thanks to Timur Doumler and Phil Nash for inviting me on their show – and for continuing CppCast, which was so wonderfully founded by Rob Irving and Jason Turner !

C++ 86

C++ Programming Design Code 86

Percona

DECEMBER 29, 2022

In this blog post, I will show you a particular example I faced when working with an upgrade exercise using pg_upgrade. These are not in this blog’s scope to keep this example simple. Example case. 1 amd64 front-end programs for PostgreSQL 11 ii postgresql-client-12 12.13-1.pgdg20.04+1

C++ 84

C++ Open Source Database Programming 84

Sutter's Mill

JANUARY 11, 2021

Assertions have been a foundational tool for writing understandable computer code since we could write computer code… far older than C’s assert() macro, they go back to at least John von Neumann and Herman Goldstine (1947) and Alan Turing (1949). Assertions are only about finding bugs, not doing program work.

C++ 58

C++ Programming Code Testing 58

Sutter's Mill

JUNE 3, 2021

Briefly, what is the difference among: (a) undefined behavior Undefined behavior is what happens when your program tries to do something whose meaning is not defined at all in the C++ standard language or library (illegal code and/or data).

C++ 54

C++ Programming Lambda Code 54

PDC

NOVEMBER 6, 2019

In part 1 of this post , we introduced the mpi4py module (MPI for Python) which provides an object-oriented interface for Python resembling the message passing interface (MPI) and enables Python programs to exploit multiple processors on multiple compute nodes. from mpi4py import MPI import numpy as np comm = MPI. Process 0 sent data: [0.

Programming 49

Programming Processing Code C++ 49

Testlodge

MARCH 15, 2023

Internal structure may include code, architecture, integrations, and data flows of a system. The more code is tested, the less likely it is to have defects, and any defects found will have less severity. Suppose developers perform unit testing before delivering code to testers. Why is White Box Testing Performed?

Testing 83

Testing Testing Tools Java Programming 83

Dynatrace

APRIL 11, 2023

The CVE Program, which publishes vulnerabilities as they become known, reported a 25% increase in vulnerabilities between 2021 and 2022. For example, the open source Java library at the heart of the Log4Shell crisis in 2021 was patched within days given the pervasiveness of the code.

Cloud 186

Cloud DevOps Open Source Retail 186

Testsigma

MARCH 23, 2022

“ Source ” stands for the source code or design. In short, Open Source is any solution/program/project whose source code is freely available for use or modification from the original design. Examples include: a. Programming Languages i. Code-Based Automation Libraries i. Automation Engineers c.

Open Source 76

Open Source C++ Programming Education 76

The Morning Paper

NOVEMBER 12, 2019

Scaling symbolic evaluation for automated verification of systems code with Serval Nelson et al., Here are the resulting code and specification sizes, together with the verification runtimes (impressively short!). The basic idea is to execute the program, but with symbolic values for inputs instead of actual inputs.

Code 45

Code Systems Programming Google 45

Brendan Gregg

JULY 30, 2017

I recently improved flame graph code coloring. Code-type coloring was a regex hack that took five minutes. In late 2014 I was modifying the JDK to preserve the frame pointer so that traditional stack walkers and profilers would work (an example of the problem is here , where Java methods lack ancestry). And that's what I coded.

Code 40

Code Java C++ Website 40

Brendan Gregg

DECEMBER 22, 2019

In the video I explained how I arrived at tracing __iwl_dbg() in this way, and how you can follow a similar approach for tracing unfamiliar code. This is not my best code, since I hacked it in a hurry, but here it is: #!/usr/bin/python Embedded C. # # Tone generation from: [link] # # 29-Apr-2019 Brendan Gregg Created this.

C++ 102

C++ Education Java AWS 102

Scalegrid

JUNE 18, 2019

for this example. The Ruby version used in both the examples below is 2.6.3. servers.mongodirector.com:27017,SG-example-17027.servers.mongodirector.com:27017,SG-example-17028.servers.mongodirector.com:27017/test?replicaSet=RS-example-0&ssl=true" servers.mongodirector.com:27017,SG-example-17028.servers.mongodirector.com:27017/test?replicaSet=RS-example-0&ssl=true"

C++ 100

C++ Servers Database Network 100

Sutter's Mill

FEBRUARY 10, 2021

Explain your answer using the following example, which uses a variation of a proposed post-C++20 syntax for preconditions. [1] Rewrite the example in Question 1 to show how to approximate the same effect using assertions in today’s C++. P0542: Support for contract based programming in C++” (WG21 paper, June 2018).

C++ 46

C++ Programming Code 46

Sutter's Mill

APRIL 30, 2012

At GoingNative in February , I emphasized the need for more modern and portable C++ libraries, including for things like RESTful web/cloud services, HTTP, JSON, and more. The goal is to find or develop modern C++ libraries that leverage C++11 features, and then submit the best for standardization.

C++ 43

C++ Azure Programming Cloud 43

Sutter's Mill

FEBRUARY 17, 2020

C++ “move” semantics are simple, and unchanged since C++11. Move: What it is, and how to use it In C++, copying or moving from an object a to an object b sets b to a ’s original value. This post is an attempt to shed light on that situation. That’s it for what advanced users need to know. Yes, but don’t.

C++ 98

C++ Testing Design Strategy 98

Sutter's Mill

JANUARY 25, 2021

One commonly cited example is is_sorted. The icing on the cake: In this example, just evaluating the assertion requires doing more work than the entire function it appears in, which is only O(log N) complexity! Give an example of an asserted condition that is in general impossible to evaluate, and so cannot be checked.

C++ 45

C++ Programming Cache Testing 45

Dynatrace

JULY 2, 2019

Automatic failure detection works well in most cases especially for web services and when developers follow good coding practices. It is basically an exception which the code doesn’t expect to occur and therefore doesn’t deal with. For instance, if I expect a “dataValidationException”, the code would look like this: Try. {.

Tuning 115

Tuning Artificial Intelligence Code Java 115

Sutter's Mill

APRIL 14, 2011

Scott Meyers, Andrei Alexandrescu and I are continuing to craft and announce the technical program for C++ and Beyond (C&B) 2011 , and two more sessions are now posted. All talks are brand-new material created specifically for C&B 2011. Here are short blurbs; follow the links for longer descriptions.

C++ 40

C++ Programming Strategy Scalability 40

Brendan Gregg

AUGUST 18, 2019

It was created by Alastair Robertson, a talented UK-based developer who has previously won various coding competitions. For example, iostat(1), or a monitoring agent, may tell you your average disk latency, but not the distribution of this latency. This example instrumented one of many thousands of available events. name global.

Latency 68

Latency C++ Cache Programming 68

Testlodge

JULY 19, 2023

SOX compliance testing validates changes made to code and verifies adherence to internal controls. Testers are responsible for testing code changes to ensure accuracy. J-SOX and C-SOX are the Japanese and Canadian equivalents, respectively. Management work with internal auditors to create policies and controls.

Testing 81

Testing Energy Programming Government 81