/
errno.rb
42 lines (33 loc) · 882 Bytes
/
errno.rb
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
35
36
37
38
39
40
41
42
##
# Interface to the C errno integer.
module Errno
##
# Raises the appropriate SystemCallError exception with +additional+ as the
# message. Equivalent to MRI's rb_sys_fail().
#
# Unlike rb_sys_fail(), handle does not raise an exception if errno is 0.
def self.handle(additional = nil)
err = errno
return if err == 0
raise SystemCallError.new(additional, err)
end
def self.errno
FFI.errno
end
def self.eql?(code)
FFI.errno == code
end
def self.raise_waitreadable(message=nil)
raise IO::EAGAINWaitReadable, message
end
def self.raise_waitwritable(message=nil)
raise IO::EAGAINWaitWritable, message
end
def self.raise_eagain(message=nil)
raise_errno(message, Errno::EAGAIN::Errno)
end
def self.raise_errno(message, errno)
raise SystemCallError.new(message, errno)
end
private :raise_errno
end