Module « os » Python 3.11.3

Fonction preadv - module os

Signature de la fonction preadv

def preadv(fd, buffers, offset, flags=0) 

Description

help(os.preadv)

Reads from a file descriptor into a number of mutable bytes-like objects.

Combines the functionality of readv() and pread(). As readv(), it will
transfer data into each buffer until it is full and then move on to the next
buffer in the sequence to hold the rest of the data. Its fourth argument,
specifies the file offset at which the input operation is to be performed. It
will return the total number of bytes read (which can be less than the total
capacity of all the objects).

The flags argument contains a bitwise OR of zero or more of the following flags:

- RWF_HIPRI
- RWF_NOWAIT

Using non-zero flags requires Linux 4.6 or newer.