low-level_开发者

How va_list and company work?

Currently i try to create a small trampoline for Objective-C IMP function. This function receive a variadic list of arguments. And i try to resend all parameters from trampoline to imp. So, va_start(a[详细]

2023-04-11 07:44 分类：问答

How does Android test network connectivity (system level)

This is not about Java level code. What I\'m looking for is how Android test the connectivities in low level.[详细]

2023-04-08 15:25 分类：问答

How does a computer draw the screen?

How does a computer draw anything to the screen at the lowest level (nothing about external libraries like X11)? Are t开发者_JS百科here supposed to be assembly commands that do this? How exactly does[详细]

2023-04-06 02:38 分类：问答

How to map two virtual adresses on the same physical memory on linux?

I\'m facing a quite tricky problem. I\'m trying to get 2 virtual memory areas pointing to the same physical memory. The point is to have different page protection parameters on开发者_高级运维 differen[详细]

2023-04-03 11:35 分类：问答

Where to learn about low-level, hard-core performance stuffs?

This is actually a 2 part question: For people who want to squeeze every clock cycle, people talk about pipelines, cache locality, et开发者_开发百科c.[详细]

2023-04-01 18:44 分类：问答

Low level keyboard hook set with SetWindowsHookEx stops calling function in C#

I am creating a program that monitors key presses for controlling iTunes globally. It also has a few WinForms (for displaying track information and editing options).[详细]

2023-03-22 03:50 分类：问答

Is there a way to enforce specific endianness for a C or C++ struct?

I\'ve seen a few questions and answers regarding to the endianness of structs, but they were about detecting the endianness of a system, or converting data between the two different endianness.[详细]

2023-03-21 05:07 分类：问答

It is possible to write less than 1 byte to a file

As far as I know the smallest unit in C is a byte. Where does this constraint comes from? CPU? For example, how can I write a nibble or a single bit t开发者_开发百科o a file?no, you can\'t... files a[详细]

2023-03-20 05:44 分类：问答

Confused over memory mapping

I\'ve r开发者_开发知识库ecently started getting into low level stuff and looking into bootloaders and operating systems etc...[详细]

2023-03-19 21:20 分类：问答

reading an int from a file with read()

I\'m working on a C programming assignment where we are only allowed to use lower level file IO commands (so no fprintf() or fscanf() function calls) to read and write a file.[详细]

2023-03-19 15:38 分类：问答