methodmissing/eio

A libeio (http://software.schmorp.de/pkg/libeio.html) wrapper for Ruby

eio's Issues

How do you gracefully handle eio errrors, ie. file you want to stat doesn't exist?

Currently the whole EM flips over:

/Library/Ruby/Gems/1.8/gems/eio-0.1/lib/eio/eventmachine.rb:13:in `poll': No such file or directory - /test/testfile (Errno::ENOENT)
    from /Library/Ruby/Gems/1.8/gems/eio-0.1/lib/eio/eventmachine.rb:13:in `notify_readable'
    from /Library/Ruby/Gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run_machine'
    from /Library/Ruby/Gems/1.8/gems/eventmachine-0.12.10/lib/eventmachine.rb:256:in `run'
    from server.rb:7

Fails to read big dir in parallel

Preparation

mkdir many
for i in {1..100000} ; do touch many/$i ; done

Failed

require 'eventmachine'
require 'eio/eventmachine'

EM.run do
  EIO.eventmachine_handler
  EIO.readdir('many') {|f|  }
  EIO.readdir('many') {|f|  }
  EM.add_timer(5){ EM.stop }
end

EIO Texture failure - Inconsistent

Mod list upon request
Minecraft 1.10.2 custom mod pack using Curse launcher
EIO textures vanish and reappear at will, see attached screen shot for an example.

How to replicate:
Place eio conduit down, in my example I'm using the farming station, placed 4 item conduits through the "floor" I built, and what you see are the textures missing.

Sometimes I can get them back for good by holding a conduit in my "active hand" and some times they only show when I am holding the conduit in "active hand" soon as I move off they vanish again.

http://prntscr.com/e7ssdm

This screenshot shows they laying on a floor, not through anything just placed three down in a row

http://prntscr.com/e7suzj

unable to do open/write

I try this

path = "/tmp/asyncdl.out"
file = nil
EM.run do
  EIO.eventmachine_handler # let libeio notify when there's result callbacks to invoke
  # file = File.new('/tmp/asyncdl.out', 'w')
  # EIO.write(file.fileno, "buf contents: hello") do |b|
  #   EIO.close(file.fileno) { EM.stop_event_loop }
  # end
  EIO.open(path, EIO::APPEND) do |fd|
    EIO.write(fd, "buf contents: hello") do |b|
      EIO.close(fd) { EM.stop_event_loop }
    end
  end
end

but got

/Library/Ruby/Gems/1.8/gems/eio-0.1/lib/eio/eventmachine.rb:13:in `poll': Bad file descriptor (Errno::EBADF)
    from /Library/Ruby/Gems/1.8/gems/eio-0.1/lib/eio/eventmachine.rb:13:in `notify_readable'
    from /Library/Ruby/Gems/1.8/gems/eventmachine-1.0.0.beta.4/lib/eventmachine.rb:179:in `run_machine'
    from /Library/Ruby/Gems/1.8/gems/eventmachine-1.0.0.beta.4/lib/eventmachine.rb:179:in `run'
    from asyndl-eio.rb:21

`write': string contains null byte (ArgumentError)

The issue is taken from: https://groups.google.com/forum/#!msg/eventmachine/oK74Pc92TvE/TX2lU0QvrBkJ

Below is a snippet which fails with:
./async_write.rb:8:in write': string contains null byte (ArgumentError) from ./async_write.rb:8:inblock (2 levels) in

'
from /usr/local/lib/ruby/gems/1.9.1/gems/eio-0.1/lib/eio/eventmachine.rb:13:in call' from /usr/local/lib/ruby/gems/1.9.1/gems/eio-0.1/lib/eio/eventmachine.rb:13:inpoll'
from /usr/local/lib/ruby/gems/1.9.1/gems/eio-0.1/lib/eio/eventmachine.rb:13:in notify_readable' from /usr/local/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0.beta.4/lib/eventmachine.rb:179:inrun_machine'
from /usr/local/lib/ruby/gems/1.9.1/gems/eventmachine-1.0.0.beta.4/lib/eventmachine.rb:179:in run' from ./async_write.rb:4:in'

====== async_write.rb =======

require 'eventmachine'
require 'eio/eventmachine'

EM.run do
EIO.eventmachine_handler

EIO.open("./test.txt", EIO::RDWR|EIO::CREAT) do |fd|
EIO.write(fd, "buf contents: \0hello") do |b| # put the zero byte using \0
EM.stop_event_loop
end
end
end

unable to write binary data to file

This is a blocker.

This can be easily reproduced using

    EM.run do
      EIO.eventmachine_handler # let libeio notify when there's result callbacks to invoke
      EIO.open(path, EIO::RDWR|EIO::CREAT) do |fd|
        EIO.write(fd, "buf contents: \0hello") do |b| # put the zero byte using \0
          EM.stop_event_loop
        end
      end
    end