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| | require_relative 'helper'
require 'fcntl'
require 'socket'
require 'thread'
class TestEpoll < Test::Unit::TestCase
include SleepyPenguin
def setup
@rd, @wr = IO.pipe
@ep = Epoll.new
end
def test_constants
Epoll.constants.each do |const|
next if const.to_sym == :IO
nr = Epoll.const_get(const)
assert nr <= 0xffffffff, "#{const}=#{nr}"
end
end
def test_cross_thread
tmp = []
t0 = Time.now
Thread.new { sleep 0.100; @ep.add(@wr, Epoll::OUT) }
@ep.wait { |flags,obj| tmp << [ flags, obj ] }
elapsed = Time.now - t0
assert elapsed >= 0.100
assert_equal [[Epoll::OUT, @wr]], tmp, tmp.inspect
end
def test_fork_safe
tmp = []
@ep.add @rd, Epoll::IN
pid = fork do
@ep.wait(nil, 100) { |flags,obj| tmp << [ flags, obj ] }
exit!(tmp.empty?)
end
@wr.syswrite "HI"
_, status = Process.waitpid2(pid)
assert status.success?
@ep.wait(nil, 0) { |flags,obj| tmp << [ flags, obj ] }
assert_equal [[Epoll::IN, @rd]], tmp
end
def test_dup_and_fork
epdup = @ep.dup
@ep.close
assert ! epdup.closed?
pid = fork do
exit!(!epdup.closed? && @ep.closed?)
end
_, status = Process.waitpid2(pid)
assert status.success?, status.inspect
ensure
epdup.close
end
def test_after_fork_usability
fork { @ep.add(@rd, Epoll::IN); exit!(0) }
fork { @ep.set(@rd, Epoll::IN); exit!(0) }
fork { @ep.to_io; exit!(0) }
fork { @ep.dup; exit!(0) }
fork { @ep.clone; exit!(0) }
fork { @ep.close; exit!(0) }
fork { @ep.closed?; exit!(0) }
fork {
begin
@ep.del(@rd)
rescue Errno::ENOENT
exit!(0)
end
exit!(1)
}
res = Process.waitall
res.each { |(_,status)| assert status.success? }
end
def test_tcp_connect_nonblock_edge
epflags = Epoll::OUT | Epoll::ET
host = '127.0.0.1'
srv = TCPServer.new(host, 0)
port = srv.addr[1]
addr = Socket.pack_sockaddr_in(port, host)
sock = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
begin
sock.connect_nonblock(addr)
exc = nil
rescue Errno::EINPROGRESS => exc
end
assert_kind_of Errno::EINPROGRESS, exc
IO.select(nil, [ sock ], [sock ])
@ep.add(sock, epflags)
tmp = []
@ep.wait(1) { |flags, obj| tmp << [ flags, obj ] }
assert_equal [ [Epoll::OUT, sock] ], tmp
end
def test_tcp_connect_edge
epflags = Epoll::OUT | Epoll::ET
host = '127.0.0.1'
srv = TCPServer.new(host, 0)
port = srv.addr[1]
sock = TCPSocket.new(host, port)
@ep.add(sock, epflags)
tmp = []
@ep.wait(1) { |flags, obj| tmp << [ flags, obj ] }
assert_equal [ [Epoll::OUT, sock] ], tmp
end
def test_edge_accept
host = '127.0.0.1'
srv = TCPServer.new(host, 0)
port = srv.addr[1]
sock = TCPSocket.new(host, port)
asock = srv.accept
assert_equal 3, asock.syswrite("HI\n")
@ep.add(asock, Epoll::OUT| Epoll::ET | Epoll::ONESHOT)
tmp = []
@ep.wait(1) { |flags, obj| tmp << [ flags, obj ] }
assert_equal [ [Epoll::OUT, asock] ], tmp
end
def teardown
@rd.close unless @rd.closed?
@wr.close unless @wr.closed?
@ep.close unless @ep.closed?
end
def test_max_events_big
@ep.add @rd, Epoll::IN
tmp = []
thr = Thread.new { @ep.wait(1024) { |flags, obj| tmp << [ flags, obj ] } }
Thread.pass
assert tmp.empty?
@wr.write '.'
thr.join
assert_equal([[Epoll::IN, @rd]], tmp)
tmp.clear
thr = Thread.new { @ep.wait { |flags, obj| tmp << [ flags, obj ] } }
thr.join
assert_equal([[Epoll::IN, @rd]], tmp)
end
def test_max_events_small
@ep.add @rd, Epoll::IN | Epoll::ET
@ep.add @wr, Epoll::OUT | Epoll::ET
@wr.write '.'
tmp = []
@ep.wait(1) { |flags, obj| tmp << [ flags, obj ] }
assert_equal 1, tmp.size
@ep.wait(1) { |flags, obj| tmp << [ flags, obj ] }
assert_equal 2, tmp.size
end
def test_signal_safe_wait_forever
sigpipe = IO.pipe
time = {}
thr = Thread.new do
IO.select([sigpipe[0]]) # wait for USR1
sigpipe[0].read(1)
sleep 0.5
@wr.syswrite '.'
end
trap(:USR1) do
time[:USR1] = Time.now
sigpipe[1].syswrite('.') # wake up thr
end
@ep.add @rd, Epoll::IN
tmp = []
pid = fork do
sleep 0.5 # slightly racy :<
Process.kill(:USR1, Process.ppid)
exit!(0)
end
time[:START_WAIT] = Time.now
@ep.wait do |flags, obj|
tmp << [ flags, obj ]
time[:EP] = Time.now
end
assert_equal([[Epoll::IN, @rd]], tmp)
_, status = Process.waitpid2(pid)
assert status.success?, status.inspect
usr1_delay = time[:USR1] - time[:START_WAIT]
assert_in_delta(0.5, usr1_delay, 0.1, "usr1_delay=#{usr1_delay}")
ep_delay = time[:EP] - time[:USR1]
assert_in_delta(0.5, ep_delay, 0.1, "ep1_delay=#{ep_delay}")
assert_kind_of Thread, thr
thr.join
ensure
sigpipe.each { |io| io.close }
trap(:USR1, 'DEFAULT')
end
def test_close
@ep.add @rd, Epoll::IN
tmp = []
thr = Thread.new { @ep.wait { |flags, obj| tmp << [ flags, obj ] } }
@rd.close
@wr.close
Thread.pass
assert_nil thr.join(0.25)
assert thr.alive?
thr.kill
assert tmp.empty?
thr.join
end
def test_rdhup
defined?(Epoll::RDHUP) or
return warn "skipping test, EPOLLRDHUP not available"
rd, wr = UNIXSocket.pair
@ep.add rd, Epoll::RDHUP
tmp = []
thr = Thread.new { @ep.wait { |flags, obj| tmp << [ flags, obj ] } }
wr.shutdown Socket::SHUT_WR
thr.join
assert_equal([[ Epoll::RDHUP, rd ]], tmp)
end
def test_hup
@ep.add @rd, Epoll::IN
tmp = []
thr = Thread.new { @ep.wait { |flags, obj| tmp << [ flags, obj ] } }
@wr.close
thr.join
assert_equal([[ Epoll::HUP, @rd ]], tmp)
end
def test_multiple
r, w = IO.pipe
@ep.add r, Epoll::IN
@ep.add @rd, Epoll::IN
@ep.add w, Epoll::OUT
@ep.add @wr, Epoll::OUT
tmp = []
@ep.wait { |flags, obj| tmp << [ flags, obj ] }
assert_equal 2, tmp.size
assert_equal [ Epoll::OUT ], tmp.map { |flags, obj| flags }.uniq
ios = tmp.map { |flags, obj| obj }
assert ios.include?(@wr)
assert ios.include?(w)
end
def test_clone
tmp = []
clone = @ep.clone
assert @ep.to_io.fileno != clone.to_io.fileno
clone.add @wr, Epoll::OUT
@ep.wait(nil, 0) { |flags, obj| tmp << [ flags, obj ] }
assert_equal([[Epoll::OUT, @wr]], tmp)
clone.close
end
def test_dup
tmp = []
clone = @ep.dup
assert @ep.to_io.fileno != clone.to_io.fileno
clone.add @wr, Epoll::OUT
@ep.wait(nil, 0) { |flags, obj| tmp << [ flags, obj ] }
assert_equal([[Epoll::OUT, @wr]], tmp)
clone.close
end
def test_set_idempotency
@ep.set @rd, Epoll::IN
@ep.set @rd, Epoll::IN
@ep.set @wr, Epoll::OUT
@ep.set @wr, Epoll::OUT
end
def test_wait_timeout
t0 = Time.now
assert_equal 0, @ep.wait(nil, 100) { |flags,obj| assert false }
diff = Time.now - t0
assert(diff >= 0.075, "#{diff} < 0.100s")
end
def test_del
assert_raises(Errno::ENOENT) { @ep.del(@rd) }
@ep.add(@rd, Epoll::IN)
@ep.del(@rd)
end
def test_wait_read
@ep.add(@rd, Epoll::IN)
assert_equal 0, @ep.wait(nil, 0) { |flags,obj| assert false }
@wr.syswrite '.'
i = 0
nr = @ep.wait(nil, 0) do |flags,obj|
assert_equal Epoll::IN, flags
assert_equal obj, @rd
i += 1
end
assert_equal 1, i
assert_equal 1, nr
end
def test_wait_write
@ep.add(@wr, Epoll::OUT | Epoll::IN)
i = 0
nr = @ep.wait(nil, 0) do |flags, obj|
assert_equal Epoll::OUT, flags
assert_equal obj, @wr
i += 1
end
assert_equal 1, nr
assert_equal 1, i
end
def test_wait_write_blocked
begin
@wr.write_nonblock('.' * 65536)
rescue Errno::EAGAIN
break
end while true
@ep.add(@wr, Epoll::OUT | Epoll::IN)
assert_equal 0, @ep.wait(nil, 0) { |flags,event| assert false }
end
def test_selectable
tmp = nil
@ep.add @rd, Epoll::IN
thr = Thread.new { tmp = IO.select([ @ep ]) }
thr.join 0.01
assert_nil tmp
@wr.write '.'
thr.join
assert_equal([[@ep],[],[]], tmp)
end
def test_new_no_cloexec
@ep.close
io = Epoll.new(0).to_io
assert((io.fcntl(Fcntl::F_GETFD) & Fcntl::FD_CLOEXEC) == 0)
end
def test_new_cloexec
@ep.close
io = Epoll.new(Epoll::CLOEXEC).to_io
assert((io.fcntl(Fcntl::F_GETFD) & Fcntl::FD_CLOEXEC) == Fcntl::FD_CLOEXEC)
io.close
# prettier, slower, but more memory efficient due to lack of caching
# due to the constant cache:
io = Epoll.new(:CLOEXEC).to_io
assert((io.fcntl(Fcntl::F_GETFD) & Fcntl::FD_CLOEXEC) == Fcntl::FD_CLOEXEC)
end
def test_new
@ep.close
io = Epoll.new.to_io
check_cloexec(io)
end
def test_delete
assert_nil @ep.delete(@rd)
assert_nil @ep.delete(@wr)
@ep.add @rd, Epoll::IN
assert_equal @rd, @ep.delete(@rd)
assert_nil @ep.delete(@rd)
end
def test_io_for
@ep.add @rd, Epoll::IN
assert_equal @rd, @ep.io_for(@rd.fileno)
assert_equal @rd, @ep.io_for(@rd)
@ep.del @rd
assert_nil @ep.io_for(@rd.fileno)
assert_nil @ep.io_for(@rd)
end
def test_flags_for
@ep.add @rd, Epoll::IN
assert_equal Epoll::IN, @ep.flags_for(@rd.fileno)
assert_equal Epoll::IN, @ep.flags_for(@rd)
@ep.del @rd
assert_nil @ep.flags_for(@rd.fileno)
assert_nil @ep.flags_for(@rd)
end
def test_flags_for_sym
@ep.add @rd, :IN
assert_equal Epoll::IN, @ep.flags_for(@rd.fileno)
assert_equal Epoll::IN, @ep.flags_for(@rd)
@ep.del @rd
assert_nil @ep.flags_for(@rd.fileno)
assert_nil @ep.flags_for(@rd)
end
def test_flags_for_sym_ary
@ep.add @rd, [:IN, :ET]
expect = Epoll::IN | Epoll::ET
assert_equal expect, @ep.flags_for(@rd.fileno)
assert_equal expect, @ep.flags_for(@rd)
@ep.del @rd
assert_nil @ep.flags_for(@rd.fileno)
assert_nil @ep.flags_for(@rd)
end
def test_include?
assert ! @ep.include?(@rd)
@ep.add @rd, Epoll::IN
assert @ep.include?(@rd), @ep.instance_variable_get(:@marks).inspect
assert @ep.include?(@rd.fileno)
assert ! @ep.include?(@wr)
assert ! @ep.include?(@wr.fileno)
end
def test_cross_thread_close
tmp = []
thr = Thread.new { sleep(1); @ep.close }
assert_raises(IOError) do
@ep.wait { |flags, obj| tmp << [ flags, obj ] }
end
assert_nil thr.value
end if RUBY_VERSION == "1.9.3"
def test_epoll_level_trigger
@ep.add(@wr, Epoll::OUT)
tmp = nil
@ep.wait { |flags, obj| tmp = obj }
assert_equal @wr, tmp
tmp = nil
@ep.wait { |flags, obj| tmp = obj }
assert_equal @wr, tmp
buf = '.' * 16384
begin
@wr.write_nonblock(buf)
rescue Errno::EAGAIN
break
end while true
@rd.read(16384)
tmp = nil
@ep.wait { |flags, obj| tmp = obj }
assert_equal @wr, tmp
end
def test_epoll_wait_signal_torture
usr1 = 0
empty = 0
nr = 100
@ep.add(@rd, Epoll::IN)
tmp = []
trap(:USR1) { usr1 += 1 }
pid = fork do
trap(:USR1, "DEFAULT")
sleep 0.1
ppid = Process.ppid
nr.times { Process.kill(:USR1, ppid); sleep 0.05 }
@wr.syswrite('.')
exit!(0)
end
while tmp.empty?
@ep.wait(nil, 100) { |flags,obj| tmp << obj }
empty += 1
end
_, status = Process.waitpid2(pid)
assert status.success?, status.inspect
assert usr1 > 0, "usr1: #{usr1}"
ensure
trap(:USR1, "DEFAULT")
end if ENV["STRESS"].to_i != 0
def test_wait_one_event_per_thread
thr = []
pipes = {}
lock = Mutex.new
maxevents = 1
ok = []
nr = 10
nr.times do
r, w = IO.pipe
lock.synchronize { pipes[r] = w }
@ep.add(r, Epoll::IN | Epoll::ET | Epoll::ONESHOT)
t = Thread.new do
sleep 2
events = 0
@ep.wait(maxevents) do |_,obj|
lock.synchronize do
assert pipes.include?(obj), "#{obj.inspect} is unknown"
ok << obj
end
events += 1
end
events
end
thr << t
end
lock.synchronize do
pipes.each_value { |w| w.syswrite '.' }
end
thr.each do |t|
begin
t.run
rescue ThreadError
end
end
thr.each { |t| assert_equal 1, t.value }
assert_equal nr, ok.size, ok.inspect
assert_equal ok.size, ok.uniq.size, ok.inspect
assert_equal ok.map { |io| io.fileno }.sort,
pipes.keys.map { |io| io.fileno }.sort
ensure
pipes.each do |r,w|
r.close
w.close
end
end
def test_epoll_as_queue
fl = Epoll::OUT | Epoll::ET
first = nil
to_close = []
500.times do
r, w = ary = IO.pipe
to_close.concat(ary)
@ep.add(w, fl)
first ||= begin
@ep.add(r, Epoll::IN | Epoll::ET)
[ r, w ]
end
end
500.times do |i|
@ep.wait(1) { |flags, io| first[1].write('.') if i == 0 }
end
@ep.wait(1) { |flags, io| assert_equal(first[0], io) }
to_close.each(&:close)
end
def test_epoll_nest
ep2 = Epoll.new
r, w = IO.pipe
@ep.add(@rd, :IN)
@ep.add(@wr, :OUT)
ep2.add(r, :IN)
ep2.add(w, :OUT)
w.write('.')
@wr.write('.')
outer = []
inner = []
nr = 0
@ep.wait(2) do |_, io|
outer << io
ep2.wait(2) do |_, io2|
(inner[nr] ||= []) << io2
end
nr += 1
end
assert_equal [ @rd, @wr ].sort_by(&:fileno), outer.sort_by(&:fileno)
exp = [ r, w ].sort_by(&:fileno)
assert_equal [ exp, exp ], inner.map { |x| x.sort_by(&:fileno) }
ensure
[ r, w, ep2 ].compact.each(&:close)
end
end if defined?(SleepyPenguin::Epoll)
|