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Contents
# (c) Copyright IBM Corp. 2021
# (c) Copyright Instana Inc. 2021
module Instana
module Backend
# Wrapper around {Sys::ProcTable} that adds support for reading the /proc
# file system for extra information around containers
# @since 1.197.0
class ProcessInfo < SimpleDelegator
def name
cmdline
.split(' ').first
end
def arguments
_, *arguments = cmdline.split(' ')
clean_arguments(arguments)
end
def parent_pid
if in_container? && !sched_pid.nil?
sched_pid
else
pid
end
end
def from_parent_namespace
!in_container? || in_container? && sched_pid != pid
end
def cpuset
path = "/proc/#{pid}/cpuset"
return unless File.exist?(path)
File.read(path).strip
end
def in_container?
!cpuset.nil? && cpuset != '/'
end
def sched_pid
path = '/proc/self/sched'
return unless File.exist?(path)
File.read(path).match(/\d+/).to_s.to_i
end
def memory_used
if RbConfig::CONFIG['host_os'].include?('darwin')
rss
else
rss * 4096
end
end
private
def clean_arguments(arguments)
return arguments unless RbConfig::CONFIG['host_os'].include?('darwin')
arguments.reject do |a|
if a.include?('=')
k, = a.split('=', 2)
ENV[k]
end
end
end
end
end
end
Version data entries
21 entries across 21 versions & 1 rubygems