What is 'the heap' ? #programming #coding #lowcode

WTF EVEN IS A HEAP???? 📚🚀 #Cplusplus #CodingTips #OperatorOverloading #MatrixMultiplication #CodeTricks

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[justicelegends]

Maturity is when you realize c is a 'high level programming language'

[egotrip]

First PirateSoftware, now this guy.
Youtube is revitalizing my lost will to learn to code.
Alright, let's see what happens.

[heroclixrz]

The stack is an arbitrary chunk of memory too. It's all just....memory. The stack pointer register is really the only thing the hardware "knows" about. It's up to the compiler to generate commands that incr/decr the SP, to place things on the stack relative to the SP, and to look on the stack for where it placed things. All of that is software controlled.

[almazingsker]

The best family trip I’ve ever been on

[felixkunze]

“C is not a low level language”
Highly recommend this article

[MarkWatsonY]

You can also write your own memory allocator as well, instead of using the default provided through malloc. Some programs that need very high performance and have unique allocation patterns do it.

[Olodus]

Another thing that might be good to know if you are the person asking the original question is that you can switch out your allocator if you want. You don't have to use the libc allocator if you don't want to.
At work we use jemalloc (which is a very widely used one) but we have also had others as well.

[kja]

"we can all go do it together as a family."

Dad?

[matthewread]

It’s cool because we learn all this in our OS and Assembly classes as well as coding our own versions.

[alexanderd.]

Not only that, you can implement your own allocator on top of another allocator. Which might be working on top of another allocator and so on.

[tommyhuffman]

Confuses me a lot as well. Thanks for the clarification!

[eduardoduran]

Thank you for this short. I’m starting to study to be a computer engineer but I’ve been stuck trying to learn C and watching this makes me want to keep pushing. Not sure why, it just did so thanks :)

[asdfghyter]

the stack isn’t hardware either, right?

*edit:* I believe the conclusion is yes and no: no there's no specific memory or anything similar dedicated to being the stack, but yes there are stack registers and several specialized instructions that manipulate the stack using these registers. so, kinda, kinda not.

[motbus]

Yes. More or less like that. It is your MMU processor that manages a virtual table which translates to physical addresses. When you request more memory, lots of work go on on thr background so the SO can have the biggest chunk of memory. This is also where SLR happens

[kexerino]

Recently had a presentation about OS memory management in uni. Fun to see how it relates to the programming as well

[bigthinkie]

Building my own malloc for a class was the hardest thing I’ve ever done

[lightspd]

Great content as always man. Appreciate it!

[platinummyrr]

You can also go read the implementation of the systemcall that malloc uses to see how the kernel actually does the allocation too :D

[tintorhd]

Omg this short clip made me finally understand malloc

[kylemsguy_]

For one of my OS class assignments I had to implement malloc. It was a great way to teach how this stuff works.