Questions tagged as 'sistema-operacional'

Tagged questions
3
answers

Should I free up all allocated memory at the end of a program?

It is commonly accepted that when I allocate a block of memory I am responsible for releasing it. This is particularly true when programming based on RAII. However the following program works perfectly: int main() { int* ptr = new int[9999...
asked by 16.02.2014 / 15:49
1
answer

What is POSIX?

I know the acronym Portable Operating System Interface (POSIX), but what is it? Is it UNIX? Can not Windows be POSIX? What does it matter to the developer?     
asked by 04.04.2017 / 12:57
1
answer

What are and how do signs work?

Do they exist only on * Unix or also on Windows? If so, what would be the equivalent on the Windows system? What is the relationship with signal handling ? A practical example of a signal handling can be any language just to demonstrate...
asked by 21.12.2018 / 14:54
3
answers

How to free all memory allocated by an object - Delphi

What is the best way to release all memory allocated by creating an object to the S.O. Let's not consider: Objeto.Free; Objeto := Nil; Sysutils.FreeAndNil(Objeto); Would there be more ways to free up memory for OS?     
asked by 18.02.2014 / 13:35
5
answers

Today (06/30/2015) we will have a second more, what can be the consequences for our systems?

If someone does not know, today 30/06/2015 will have a second more. That is, today after the 23h59m59s we will have 23h59m60s ! This is to do the correction of the International Atomic Time. I know that there are severa...
asked by 30.06.2015 / 22:07
2
answers

What is shebang? [duplicate]

Since in many languages the # character represents a comet, what's the point of using it? Does it have any special meaning?     
asked by 17.03.2017 / 19:07
1
answer

Switching from 16 to 64 bits during the boot of an Intel compatible PC

Some time ago I studied to create a draft operating system for Intel compatible PC computers, which really did not have to do much, besides putting the computer in 32-bit mode, handling the keyboard interrupts, and (at the time) of the serial po...
asked by 28.04.2014 / 22:45
4
answers

How to detect the operating system with Python?

How can I do in Python to identify which operating system is being used?     
asked by 23.11.2016 / 13:20
1
answer

Why do DBMSs use their own paging if the operating system already has one?

I'm studying database and I ended up getting to the subject of replacing pages like LRU and MRU. The operating system already does this normally, why does the DB need to do its own paging?     
asked by 15.11.2015 / 06:55
3
answers

Licensing: How to deal with tampering with a computer's local time / date?

I'm developing an application (Desktop) that requires license renewal periodically, following a SaaS template. The license template should work as follows: The license will be downloaded from a web service. This requires the user to be...
asked by 29.02.2016 / 19:49