1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
| | # -*- encoding: binary -*-
# Copyright (C) 2013-2016 all contributors <yahns-public@yhbt.net>
# License: GPL-3.0+ (https://www.gnu.org/licenses/gpl-3.0.txt)
# frozen_string_literal: true
module Yahns::SendfileCompat # :nodoc:
def trysendfile(io, offset, count)
return 0 if count == 0
if respond_to?(:yahns_init_ssl) && !@ssl_blocked.empty?
str = @ssl_blocked
#warn "#{fileno} unblocking #{str.bytesize} #{str.object_id}"
else
count = 0x4000 if count > 0x4000
buf = Thread.current[:yahns_sfbuf] ||= ''.dup
io.pos = offset
str = io.read(count, buf) or return # nil for EOF
end
n = 0
case rv = kgio_trywrite(str)
when String # partial write, keep trying
n += (str.bytesize - rv.size)
str = rv
when :wait_writable, :wait_readable
if respond_to?(:ssl_blocked)
#warn "empty: #{@ssl_blocked.empty?}"
end
return n > 0 ? n : rv
when nil
return n + str.bytesize # yay!
end while true
end
end
|