Current File : //opt/alt/ruby18/share/ri/1.8/system/IO/read_nonblock-i.yaml
--- !ruby/object:RI::MethodDescription
aliases: []
block_params:
comment:
- !ruby/struct:SM::Flow::P
body: Reads at most <em>maxlen</em> bytes from <em>ios</em> using read(2) system call after O_NONBLOCK is set for the underlying file descriptor.
- !ruby/struct:SM::Flow::P
body: If the optional <em>outbuf</em> argument is present, it must reference a String, which will receive the data.
- !ruby/struct:SM::Flow::P
body: "read_nonblock just calls read(2). It causes all errors read(2) causes: EAGAIN, EINTR, etc. The caller should care such errors."
- !ruby/struct:SM::Flow::P
body: read_nonblock causes EOFError on EOF.
- !ruby/struct:SM::Flow::P
body: If the read buffer is not empty, read_nonblock reads from the buffer like readpartial. In this case, read(2) is not called.
full_name: IO#read_nonblock
is_singleton: false
name: read_nonblock
params: |
ios.read_nonblock(maxlen) => string
ios.read_nonblock(maxlen, outbuf) => outbuf
visibility: public