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Results tagged with io
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user 60357
Input/Output of data to/from a system. This usually implies file storage or network communication, but may also mean interaction with a user through a user interface.
3
votes
How does a process know the location of another's stdout, stderr, stdin?
Under Unix, processes have file descriptors (fd). They are numbered, and the numbers are unique to a process. The fd 0 is stdin, fd 1 and 2 are stdout and stderr, respectively. These initial file desc …
- 135k
8
votes
Accepted
Who is responsible for stream positioning?
The caller is responsible for putting the Stream in a suitable state to be consumed by the reader. There are two main reasons:
Not all streams support repositioning. You should only set the Stream.P …
- 135k
2
votes
Accepted
Is Epoll/Multiplexing suitable to make network requests instead of "listen to" incoming requ...
Select and Epoll were and are fundamentally flawed APIs. They tell us efficiently if I/O operations are possible on a particular file descriptor, but do not actually let us perform the I/O operation i …
- 135k
47
votes
Accepted
Why do we have to mention the data type of the variable in C
You are comparing variable declarations to #defines, which is incorrect. With a #define, you create a mapping between an identifier and a snippet of source code. The C preprocessor will then literally …
- 135k