# File lib/facter/util/memory.rb, line 60
60:   def self.vmstat_darwin_find_free_memory()
61: 
62:     memfree = 0
63:     pagesize = 0
64:     memspecfree = 0
65: 
66:     vmstats = Facter::Util::Resolution.exec('vm_stat')
67:     vmstats.each_line do |vmline|
68:       case
69:       when vmline =~ /page\ssize\sof\s(\d+)\sbytes/
70:         pagesize = $1.to_i
71:       when vmline =~ /^Pages\sfree:\s+(\d+)\./
72:         memfree = $1.to_i
73:       when vmline =~ /^Pages\sspeculative:\s+(\d+)\./
74:         memspecfree = $1.to_i
75:       end
76:     end
77: 
78:     freemem = ( memfree + memspecfree ) * pagesize
79:     Facter.add("MemoryFree") do
80:       setcode do
81:         Facter::Memory.scale_number(freemem.to_f, "")
82:       end
83:     end
84:   end