hypervisor
too-many-lists
hypervisor | too-many-lists | |
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3 | 219 | |
1,317 | 3,027 | |
1.0% | 1.0% | |
0.0 | 0.0 | |
over 2 years ago | 21 days ago | |
C++ | Rust | |
GNU General Public License v3.0 or later | MIT License |
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hypervisor
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Free hypervisor source code?
So I'm working on making a hypervisor for my school. I've looked into the vendors like Proxmox, Vmware, etc. and I haven't found one that will let me make my own GUI. I have looked at pages like this https://rayanfam.com/topics/hypervisor-from-scratch-part-1/ or projects like Bareflank here https://github.com/Bareflank/hypervisor and they don't QUITE seem like what I am looking for, unless I'm just blind. I just want to have a hypervisor that can spin up oh so many virtual machine instances of Windows 10 and accessible in a browser. I want to have the freedom to make my own GUI so I can tailor it to my school's website. The idea is it's just something freshman can screw around with and have the option of spinning up a few VM instances as they please, while keeping in mind a very simple GUI a freshman could figure out. I'm not too concerned with hardware limitations, I just want to see if this is even possible, and if I have to deal with crap hardware/software that can only spin up 2 instances or something, so be it. I understand that I very well may be looking for a unicorn in that I will have to either use a vendor and accept their GUI or go through a monolith of assembly code to build my own, but if anyone has any suggestions or github links to help me do this in a reasonable amount of time it would be much appreciated.
- CppNow 2021: Don't constexpr All the Things
- Type trait for "does the default constructor 0 initialize all non-static members"
too-many-lists
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Towards memory safety with ownership checks for C
You seem to have a preset opinion, and I'm not sure you are interested in re-evaluating it. So this is not written to change your mind.
I've developed production code in C, C++, Rust, and several other languages. And while like pretty much everything, there are situations where it's not a good fit, I find that the solutions tend to be the most robust and require the least post release debugging in Rust. That's my personal experience. It's not hard data. And yes occasionally it's annoying to please the compiler, and if there were no trait constraints or borrow rules, those instances would be easier. But way more often in my experience the compiler complained because my initial solution had problems I didn't realize before. So for me, these situations have been about going from building it the way I wanted to -> compiler tells me I didn't consider an edge case -> changing the implementation and or design to account for that edge case. Also using one example, where is Rust is notoriously hard and or un-ergonomic to use, and dismissing the entire language seems premature to me. For those that insist on learning Rust by implementing a linked list there is https://rust-unofficial.github.io/too-many-lists/.
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Command Line Rust is a great book
Advent of Code was okay until I encounterd a problem that required a graph, tree or linked list to solve, where I hit a wall. Most coding exercises are similar--those requiring arrays and hashmaps and sets are okay, but complex data structures are a PITA. (There is an online course dedicated to linked lists in Rust but I couldn't grok it either). IMO you should simply skip problems that you can't solve with your current knowledge level and move on.
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[Media] I'm comparing writing a double-linked list in C++ vs with Rust. The Rust implementation looks substantially more complex. Is this a bad example? (URL in the caption)
I feel obligated to point to the original cannon literature: https://rust-unofficial.github.io/too-many-lists/
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Need review on my `remove()` implementation for singly linked lists
I started learning Rust and like how the compiler is fussy about things. My plan was to implement the data structures I knew, but I got stuck at the singly linked list's remove() method. I've read the book as well, but I have no clue how to simplify this further:
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Factor is faster than Zig
My impression from the article is that Zig provides several different hashtables and not all of them are broken in this way.
This reminds me of Aria's comment in her Rust tutorial https://rust-unofficial.github.io/too-many-lists/ about failing to kill LinkedList. One philosophy (and the one Rust chose) for a stdlib is that this is only where things should live when they're so commonly needed that essentially everybody needs them either directly or to talk about. So, HashTable is needed by so much otherwise unrelated software that qualifies, BloomFilter, while it's real useful for some people, not so much. Aria cleaned out Rust's set of standard library containers before Rust 1.0, trying to keep only those most people would need. LinkedList isn't a good general purpose data structure, but, it was too popular and Aria was not able to remove it.
Having multiple hash tables feels like a win (they're optimized for different purposes) but may cost too much in terms of the necessary testing to ensure they all hit the quality you want.
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Was Rust Worth It?
> Cyclic references can be dealt with runtime safety checks too - like Rc and Weak.
Indeed. Starting out with code sprinkled with Rc, Weak, RefCell, etc is perfectly fine and performance will probably not be worse than in any other safe languages. And if you do this, Rust is pretty close to those languages in ease of use for what are otherwise complex topics in Rust.
A good reference for different approaches is Learn Rust With Entirely Too Many Linked Lists https://rust-unofficial.github.io/too-many-lists/
- What are some of projects to start with for a beginner in rust but experienced in programming (ex: C++, Go, python) ?
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How to start learning a systems language
Second, once you've finished something introductory like The Book, read Learning Rust With Entirely Too Many Linked Lists. It really helped me to understand what ownership and borrowing actually mean in practical terms. If you don't mind paying for learning materials, a lot of people recommend Programming Rust, Second Edition by Blandy, Orendorff, and Tindall as either a complement, follow-up, or alternative to The Book.
- My team might work with Rust! But I need good article recommendations
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Conversion?
Learning Rust With Entirely Too Many Linked Lists which highlights a lot of the differences with how you need to structure your code in Rust compared to other languages.
What are some alternatives?
circle - The compiler is available for download. Get it!
rust - Empowering everyone to build reliable and efficient software.
Savefile-Saver - A program to backup all of your game savefiles on your system, neatly, and into a single folder.
Rustlings - :crab: Small exercises to get you used to reading and writing Rust code!
HyperPlatform - Intel VT-x based hypervisor aiming to provide a thin VM-exit filtering platform on Windows.
book - The Rust Programming Language
RisohEditor - Another free Win32 resource editor
CppCoreGuidelines - The C++ Core Guidelines are a set of tried-and-true guidelines, rules, and best practices about coding in C++
hvpp - hvpp is a lightweight Intel x64/VT-x hypervisor written in C++ focused primarily on virtualization of already running operating system
easy_rust - Rust explained using easy English
node-vsphere-soap - Node.js module for accessing VMware vCenter/ESXi hosts using SOAP
x11rb - X11 bindings for the rust programming language, similar to xcb being the X11 C bindings