Confessions of a Code Addict
Abhinav UpadhyayI write about how computers work underneath the abstractions: compilers, operating systems, memory, performance, and low-level programming.
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 116 | Founded | 3 years ago | Last Issue | 15 days ago |
| Active | |||||
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blog.codingconfessions.comLatest Issues
How Big Is a Physical Address?
A short aside from the virtual memory series on physical address size, why it differs from virtual address size, and why different CPUs expose different limits.
This is a short aside in our virtual memory series. We have talked extensively...
What Does a Page Table Entry Actually Store?
Watch now | Learn about the page-level metadata that is stored in the page table and how is that used by the hardware during memory access
This is the 5th video in our virtual memory series. In the previous video, we learned about the page...
Page Tables from First Principles
Watch now | Constructing page tables from first principle as a way to store virtual-to-physical address mappings
This is the fourth video in our virtual memory series based on the article/ebook I wrote. In the last few videos, we covered w...
Understanding a Process’s Address Space Layout
In this video, we look at how a process’s virtual address space is laid out: code, data, heap, stack, shared libraries, mmap regions, and more.
This is the third video in the virtual memory series based on the virtual memory article/book t...
Why Git Has a Variable Named false_but_the_compiler_does_not_know_it
Today, in weird C code tricks, I want to show you a small example from Git’s source code.
Recently, I was poking around the Git source when a directory name caught my eye, it was named “compiler-tricks”. I thought, “This is a promising nam...
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Authors
The writers behind this newsletter.
I'm a software engineer obsessed with understanding how computers work. I write about Python internals, assembly, operating systems, performance engineering, and the machinery that powers modern software.
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