save

.vscode/settings.json

@@ -0,0 +1,7 @@
+{
+    "spellright.language": [],
+    "spellright.documentTypes": [
+        "latex",
+        "plaintext"
+    ]
+}

README.md

@@ -1,5 +1,7 @@
 # Thought dump
 
+The repository for the book [Future Explained in 200 Lines of Rust](https://cfsamson.github.io/books-futures-explained/)
+
 ### Data + Vtable
 
 We need to get a basic grasp of this to be able to understand how we implement a Waker.

src/0_1_BackgroundInformation.md

@@ -6,13 +6,34 @@ information that will help demystify some of the concepts we encounter.
 ## Concurrency in general
 
 If you find the concepts of concurrency and async programming confusing in
-general, I'd recommend that you spend a little time exploring some of the
+general, I know where you're coming from and I have written some resources to 
-basic concepts first. Learning `Futures` in Rust is not the best introduction
+try to give a high level overview that will make it easier to learn Rusts 
-to the subject.
+`Futures` afterwards:
 
-I have spent quite a bit of time digging into these subjects myself, and I'll
+[Async Basics - The difference between concurrency and parallelism](https://cfsamson.github.io/book-exploring-async-basics/1_concurrent_vs_parallel.html)
-point you to some of thos sources
+[Async Basics - Async history](https://cfsamson.github.io/book-exploring-async-basics/2_async_history.html)
+[Async Basics - Strategies for handling I/O](https://cfsamson.github.io/book-exploring-async-basics/5_strategies_for_handling_io.html)
+[Async Basics - Epoll, Kqueue and IOCP](https://cfsamson.github.io/book-exploring-async-basics/6_epoll_kqueue_iocp.html)
 
-**The absolute minimum**
+## Trait objects and dynamic dispatch
 
-[Async Basics - The Difference Between Concurrency And Parallelism]()
+The single most confusing topic we encounter when implementing our own `Futures`
+is how we implement a `Waker`. Creating a `Waker` involves creating a `vtable`
+which allows using dynamic dispatch to call methods on a _type erased_ trait 
+object we construct our selves.
+
+If you want to know more about dynamic dispatch in Rust I can recommend this article:
+
+https://alschwalm.com/blog/static/2017/03/07/exploring-dynamic-dispatch-in-rust/
+
+
+Let's explain this a bit more in detail.
+
+## Fat pointers in Rust
+
+Let's take a look at the size of some different pointer types in Rust. If we
+run the following code:
+
+```rust
+
+```