Sha256: fe985c51077f3b546644d16a68740b794d8f1eeb500905e3b9ba063ee570577a
Contents?: true
Size: 1.91 KB
Versions: 12
Compression:
Stored size: 1.91 KB
Contents
# encoding: utf-8
# This file is distributed under New Relic's license terms.
# See https://github.com/newrelic/rpm/blob/master/LICENSE for complete details.
# This module is intended to provide access to information about the host OS and
# [virtual] machine. It intentionally does no caching and maintains no state -
# caching should be handled by clients if needed. Methods should return nil if
# the requested information is unavailable.
require 'rbconfig'
module NewRelic
module Agent
module SystemInfo
def self.ruby_os_identifier
RbConfig::CONFIG['target_os']
end
def self.processor_count
case ruby_os_identifier
when /darwin/, /freebsd/
`sysctl -n hw.ncpu`.to_i
when /linux/
cpuinfo = proc_try_read('/proc/cpuinfo')
return unless cpuinfo
processors = cpuinfo.split("\n").select {|line| line =~ /^processor\s*:/ }.size
processors == 0 ? nil : processors
end
rescue
nil
end
def self.processor_arch
RbConfig::CONFIG['target_cpu']
end
def self.os_version
proc_try_read('/proc/version')
end
# A File.read against /(proc|sysfs)/* can hang with some older Linuxes.
# See https://bugzilla.redhat.com/show_bug.cgi?id=604887, RUBY-736, and
# https://github.com/opscode/ohai/commit/518d56a6cb7d021b47ed3d691ecf7fba7f74a6a7
# for details on why we do it this way.
def self.proc_try_read(path)
return nil unless File.exist?(path)
content = ''
File.open(path) do |f|
loop do
begin
content << f.read_nonblock(4096)
rescue EOFError
break
rescue Errno::EWOULDBLOCK, Errno::EAGAIN
content = nil
break # don't select file handle, just give up
end
end
end
content
end
end
end
end
Version data entries
12 entries across 12 versions & 1 rubygems