Archive for category: Blog

deadlockResolved

Prefer Locks to Mutexes

May 12, 2016

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If the previous post showed something, it's that you should use mutexes with great care. That's why you…

Deadlock

The Risks of Mutexes

May 10, 2016

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The usage of mutexes seems extremely simple. There is a critical section in the code that a single thread…

readerWriterLocks

Reader-Writer Locks

May 7, 2016

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With C++14 came reader-writer locks. The idea is straightforward and promising. Arbitrary reading threads…

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Source Code Repository

May 5, 2016

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I created a repository for the source code. It's on GitHub and has the name ModernesCppSource:https://github.com/RainerGrimm/ModernesCppSource.git This…

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Threads Sharing Data

April 30, 2016

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One of the biggest challenges of thread management begins when the threads share non-const data Data…

Sleeper

Thread Arguments

April 26, 2016

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A thread gets its data by copy or by reference. By default, you should use by copy. Why? In case your…

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Threads Lifetime

April 24, 2016

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The parent has to take care of their child. This simple idea has big consequences for a thread lifetime.…

RainerGrimmSmall

For the Proofreaders and the Curious People

April 23, 2016

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After a lot of discussion with my proofreaders, we finally have a process to publish the articles. How…

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Thread Creation

April 19, 2016

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Thread creation is easy. Call std::thread, and a new thread will be created. The thread gets a…

timeline

Multithreading in Modern C++

April 18, 2016

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With the new C++11 Standard, C++ faces the first-time challenges of multicore architectures. The…

Latest news

std::executionNovember 18, 2024 - 9:03 am
std::execution, previously known as executors or Senders/Receivers, provides “a Standard C++ framework for managing asynchronous execution on generic execution resources“. (P2300R10) Side Note Change of plans. My original plan was to present the C++26 library after the core language. However, the implementation status of the library is not good enough. Therefore, I decided to continue […]
C++26 Core Language: Small ImprovementsNovember 4, 2024 - 8:34 am
There are more small improvements in the C++26 language, which you should know. static_assert extension First, here’s the syntax of static_assert in C++11: static_assert(compile time predicate, unevaluated string) With C++26, the string can be a user-defined type having the following properties: static_assert can now be used with a format string. Here’s a nice example from […]
Placeholders and Extended Character SetOctober 28, 2024 - 10:19 am
Placeholders are a nice way to highlight variables that are no longer needed. Additionally, the character set of C++26 will be extended. Placeholders Structured bindings are a C++17 feature that allows you to bind multiple variables to the elements of a structured object. The following program demonstrates using tuples and structured bindings to return and […]
Contracts in C++26October 21, 2024 - 9:54 am
Contracts allow you to specify preconditions, postconditions, and invariants for functions. Contracts should already be part of C++20 but were removed in the standard meeting in Cologne. Here is what Herb Sutter said about contracts on Sutter’s Mill: “contracts is the most impactful feature of C++20 so far, and arguably the most impactful feature we […]
Reflection in C++26: Determine the LayoutOctober 14, 2024 - 9:42 am
Thanks to reflection, you can determine the layout of types. My examples are based on the reflection proposal P2996R5. Class Layout The following program determines the class layout of a few members. // classLayout.cpp #include <experimental/meta> #include <iostream> #include <utility> #include <vector> #include <array> struct member_descriptor { std::size_t offset; std::size_t size; bool operator==(member_descriptor const&) const […]
Reflection in C++26: Metafunctions for Enums and ClassesOctober 7, 2024 - 1:53 pm
Today, I continue my journey through reflection in C++26 and play with enums and classes. The names of the metafunctions to access an Enum or a Class member are often identical. Access the Members of an Enum The following program is based on one by Daveed Vandevoorde. Daveed is one of the fathers of reflection, […]