Module: Perfer::Platform::POSIX

Included in:
Perfer::Platform
Defined in:
lib/perfer/platform/posix.rb

Defined Under Namespace

Modules: LibC Classes: RUsageStruct, TimeValStruct

Constant Summary collapse

PID = 
Process.pid

Instance Method Summary collapse

Instance Method Details

#command_line ⇒ Object 



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# File 'lib/perfer/platform/posix.rb', line 70

def command_line
  return Rubinius::OS_ARGV.join(' ') if defined? Rubinius::OS_ARGV
  case OS
  when /^darwin/, /^linux/, /^solaris/
    `ps -o args= -p #{PID}`.lines.to_a.last.rstrip
  else
    warn "Unknown platform for Platform.command_line: #{os.inspect}"
    nil
  end
end

#maximum_memory_used ⇒ Object 



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# File 'lib/perfer/platform/posix.rb', line 51

def maximum_memory_used
  rusage = RUsageStruct.new
  r = LibC.getrusage(LibC::RUSAGE_SELF, rusage)
  if r != 0
    warn "Could not retrieve memory information with getrusage(2)"
    0
  else
    m = rusage[:ru_maxrss]
    warn "Memory information with getrusage(2) is inaccurate, ru_maxrss was 0" if m == 0
    if /darwin/ =~ OS
      m # reported in bytes
    else
      m * 1024 # reported in KB, as the man page says
    end
  end
ensure
  rusage.pointer.free if rusage
end

#memory_used ⇒ Object 



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# File 'lib/perfer/platform/posix.rb', line 41

def memory_used
  case OS
  when /^darwin/, /^linux/, /^solaris/
    Integer(`ps -o rss= -p #{PID}`) * 1024
  else
    warn "Unknown platform for Platform.command_line: #{os.inspect}"
    nil
  end
end