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
43
44
45
46
47
48
49
50
51
52
53
54
|
## memory.rb
## Support module for memory related facts
##
## This program is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License
## as published by the Free Software Foundation (version 2 of the License)
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston MA 02110-1301 USA
##
module Facter::Memory
require 'thread'
def self.meminfo_number(tag)
memsize = ""
Thread::exclusive do
size, scale = [0, ""]
File.readlines("/proc/meminfo").each do |l|
size, scale = [$1.to_f, $2] if l =~ /^#{tag}:\s+(\d+)\s+(\S+)/
# MemoryFree == memfree + cached + buffers
# (assume scales are all the same as memfree)
if tag == "MemFree" &&
l =~ /^(?:Buffers|Cached):\s+(\d+)\s+(?:\S+)/
size += $1.to_f
end
end
memsize = scale_number(size, scale)
end
memsize
end
def self.scale_number(size, multiplier)
suffixes = ['', 'kB', 'MB', 'GB', 'TB']
s = suffixes.shift
while s != multiplier
s = suffixes.shift
end
while size > 1024.0
size /= 1024.0
s = suffixes.shift
end
return "%.2f %s" % [size, s]
end
end
|
