understanding mmap, the workhorse behind keeping memory access efficient in linux

Рет қаралды 52,043

Chris Kanich

Күн бұрын

Course schedule: www.cs.uic.edu/~ckanich/cs361...

Пікірлер: 27

@yonahcitron226 9 ай бұрын

It’s a joke that this is available online for free. Absolute gold. Love every minute!

@j5ylim396 Жыл бұрын

wished my lecturers were like this. great one man, cheers

@stevewu9372 3 жыл бұрын

Thank you, Chris, I learned a lot from you!

@DJ-vx9gl 2 жыл бұрын

Wonderful explanations, thank you!

@whata4head666 3 жыл бұрын

Greetings from Brazil Chris, just wanna say thank you, you're really helping me :)

@ZubairAhmad-wu2tw 3 жыл бұрын

you might also want to watch "Tech Instance" kzfaq.info

@flyxtop 3 жыл бұрын

thanks I learned some things today again! (I knew this earlier but it's interesting every program or library exists as a file)

@ZubairAhmad-wu2tw 3 жыл бұрын

give "Tech Instance" a try too kzfaq.info

@user-jx1go3bf8k 25 күн бұрын

Thank you!

@glenyeldho5782 3 жыл бұрын

Waiting for the next video in this series 😁😁

@ZubairAhmad-wu2tw 3 жыл бұрын

I found Y/T channel "Tech Instance" helpful too kzfaq.info

@alex_d_lee Ай бұрын

this is so good

@nang88 2 жыл бұрын

cool

@ninjazhu 11 ай бұрын

That is one method of implementing VM. There are multiple methods. Not all hardware has the came features which limits sometimes which techniques are used and can even force you to think outside the box which programmers should do anyway.

@gleventhal 4 ай бұрын

Boy, do I love when a native english speaker who actually knows the topic well presents a technical topic this well. Thanks for being you!

@demablogia Жыл бұрын

Great video, thanks. One question: when source is compiled & linked into an ELF file , this file doesn't have any virtual address but local offsets. So , I guess, someone and sometime translate those local offsets to virtual adresses . Is the code (.text, .data ) stored into real memory modified ( by someone ) with virtual address references ? Or code stored into real memory still has got offsets ?

@Henry-sv3wv Жыл бұрын

(i am no expert, just writing what i just learned from web) * every process only "sees" virtual memory. * a static linked ELF contains no symbols and is ready to run with a fixed entry point address. * an ELF that uses dynamic libraries contains symbols and needs dynamic linking which is done by the loader ( ld-linux ) In my current Arch Linux the dynamic linker/loader ld-linux is: ld-linux-x86-64.so.2 coming from the glibc 2.36 library package. (it itself is a statically linked ELF executable)