buffered

Python output buffering

Is output buffering enabled by default in Python's interpreter for sys.stdout ? If the answer is positive, what are all the ways to disable it ? Suggestions so far: Use the -u command line switch Wrap sys.stdout in an object that flushes after every write Set PYTHONUNBUFFERED env var sys.stdout = os.fdopen(sys.stdout.fileno(), 'w', ...

How can I buffer non-blocking IO?

When I need buffered IO on blocking file descriptor I use stdio. But if I turn file descriptor into non-blocking mode according to manual stdio buffering is unusable. After some research I see that BIO can be usable for buffering non-blocking IO. But may be there are other alternatives? I need this to avoid using threads in a multi-co...

Buffered vs non buffered, which one to use?

I am sorry if this is a duplicate but I was not able to find a definitive answer to what is the best practice for each type. I would like to know what the appropriate conditions are that define when to use BufferedReader vs FileReader or BufferedInput/OutputStream vs FileInput/OutputStream? Is there a formula of sorts that will always ...

Search for Binary Pattern in C (Read buffered binary file)

Hey there. I'm trying to write a small program that will read the four following bytes after the last occurrence of "0xFF 0xC0 0x00 0x11" which can be converted easily to binary or decimal. The purpose is that the 2-5 bytes following the last occurrence of that hex pattern represent the width and height of a JPEG file. #include <stdio.h...

Efficient way of handling file pointers in Java? (Using BufferedReader with file pointer)

I have a log file which gets updated every second. I need to read the log file periodically, and once I do a read, I need to store the file pointer position at the end of the last line I read and in the next periodic read I should start from that point. Currently, I am using a random access file in Java and using the getFilePointer() m...

Type of Linux/Unix I/O

hi guys, i have to make a presentation about Linux/Unix I/O: File I/O,Standard I/O, buffered/unbuffered I/O and formatted/unformatted I/O. i'm not sure how to order these kinds of I/O to make sense. here is my try: file I/O unbuffered I/O buffered I/O Standard I/O formatted/unformatted I/O is this correct ?? thx anyway ...

Buffered Reader readLine() with Empty lines

Hi, I am using buffered reader to grab a line at a time from a text file. I am trying to also get the line number from the text file using a tracking integer. Unfortunately BufferedReader is skipping empty lines (ones with just /n or the carriage return). Is there a better way to solve this? Would using scanner work? Example code: i...

Is stdout line buffered, unbuffered or indeterminate by default?

Section 7.9.13/7 of c99 states that: At program start-up, three text streams are predefined and need not be opened explicitly - standard input (for reading conventional input), standard output (for writing conventional output), and standard error (for writing diagnostic output). As initially opened, the standard error stream is ...

client socket sends data but server socket does not receive them. c++ buffered stream!?

I am working on a project where a partner provides a service as socket server. And I write client sockets to communicate with it. The communication is two way: I send a request to server and then receive a response from server. The problem is that I send the data to the server but apparently the server cannot receive the data. From my ...