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Ryonald Teofilo

Oct 3

Atomics in C++ — CAS and Memory Order

Continuing from the last post, we discussed atomic read, write and read-modify-write. However, we have yet to discuss arguably the most important and commonly used operation on a std::atomic, the compare-and-swap (CAS). Compare-and-Swap CAS would not be complete without the swap operation. This is available through the exchange() member function. std::atomic<int>…

10 min read

Atomics in C++ — CAS and Memory Order

10 min read

Sep 26

Atomics in C++ — What is a std::atomic?

The radioactive part of C++, std::atomic was added in C++11 as a way to declare an atomic variable — a variable whose value changes atomically, which means there is a guarantee that no other processes/threads would see any intermediary state. Since C++11 introduced std::thread as a standard language-provided way to…

7 min read

Atomics in C++ — What is a std::atomic?

7 min read

Sep 11

Cache Line Alignment in C++ — How It Makes Your Program Faster.

As discussed in Memory and Data Alignment in C++, memory alignment is commonly used for optimisation. One of the methods is cache line alignment. Cache Lines As a prerequisite, data is moved between the CPU cache and main memory in fixed size blocks, known as cache lines. …

4 min read

Cache Line Alignment in C++ — How It Makes Your Program Faster.

4 min read

Sep 11

Memory and Data Alignment in C++ — What is Misaligned Access?

Data or memory alignment is a significant concept in software development that surprisingly isn’t discussed often. Mostly because of how advanced compilers and interpreters have gotten, that these lower-level complications are taken care of without most of us knowing. But since you are programming in C++, you’re always looking for…

6 min read

Memory and Data Alignment in C++ — What is Misaligned Access?

6 min read

Aug 27

Inline in C++ — What it has to do with the One Definition Rule.

The inline keyword has got to be the most misunderstood keyword in C++. I remember when I first started, most online sources solely mention inline as a way to hint the compiler to substitute logic of a function in-place of every instance of it being called; In other words, inlining. …

6 min read

Inline in C++ — What it has to do with the One Definition Rule.

6 min read

Aug 20

Copy and Move Elision in C++ — What is RVO/NRVO?

Copy and move elision is an optimisation technique used by many C++ compilers to avoid unnecessary copying and moving of temporary variables. This speeds up processes that may otherwise be slow and inefficient, especially with objects that are “expensive” — such as containers or complex user-defined types. Let’s take a…

4 min read

Copy and Move Elision in C++ — What is RVO/NRVO?

4 min read

Aug 6

Template type deduction in C++ — Behind the magic.

Template programming is a powerful built-in feature of C++ that most developers neglect to take the time to truly understand — mostly because it “just works”. However, it is important to be cognizant of the template type deduction process, since picking the wrong deduction behaviour could cause unintended side effects…

7 min read

Template type deduction in C++ — Behind the magic.

7 min read

Jul 30

Static and Extern in C++ — What it really does to your program?

C++ is a popular programming language, but it is also known to be difficult to grasp. One of the obscure concepts in the language is the use of static and extern. // what makes these different? int y; static int x; extern int z; Seeing the static keyword for the…

6 min read

Static and Extern in C++ — What it really does to your program?

6 min read

Ryonald Teofilo

Ryonald Teofilo

Sharing my thoughts on programming, one debug break at a time 🖤 ryonaldteofilo.github.io

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