module Memory keys = [] vals = [] case when File.exist?(procfile = "/proc/self/status") PROC_FILE = procfile VM_PAT = /^Vm(\w+):\s+(\d+)/ def self.read_status IO.foreach(PROC_FILE, encoding: Encoding::ASCII_8BIT) do |l| yield($1.downcase.intern, $2.to_i * 1024) if VM_PAT =~ l end end read_status {|k, v| keys << k; vals << v} when /mswin|mingw/ =~ RUBY_PLATFORM require 'dl/import' require 'dl/types' module Win32 extend DL::Importer dlload "kernel32.dll", "psapi.dll" include DL::Win32Types if [nil].pack('p').bytesize == 8 typealias "SIZE_T", "DWORD64" else typealias "SIZE_T", "DWORD32" end PROCESS_MEMORY_COUNTERS = struct [ "DWORD cb", "DWORD PageFaultCount", "SIZE_T PeakWorkingSetSize", "SIZE_T WorkingSetSize", "SIZE_T QuotaPeakPagedPoolUsage", "SIZE_T QuotaPagedPoolUsage", "SIZE_T QuotaPeakNonPagedPoolUsage", "SIZE_T QuotaNonPagedPoolUsage", "SIZE_T PagefileUsage", "SIZE_T PeakPagefileUsage", ] typealias "PPROCESS_MEMORY_COUNTERS", "PROCESS_MEMORY_COUNTERS*" extern "HANDLE GetCurrentProcess()", :stdcall extern "BOOL GetProcessMemoryInfo(HANDLE, PPROCESS_MEMORY_COUNTERS, DWORD)", :stdcall module_function def memory_info size = PROCESS_MEMORY_COUNTERS.size data = PROCESS_MEMORY_COUNTERS.malloc data.cb = size data if GetProcessMemoryInfo(GetCurrentProcess(), data, size) end end keys << :peak << :size def self.read_status if info = Win32.memory_info yield :peak, info.PeakPagefileUsage yield :size, info.PagefileUsage end end else PSCMD = ["ps", "-ovsz=","-orss=", "-p"] PAT = /^\s*(\d+)\s+(\d+)$/ keys << :size << :rss def self.read_status if PAT =~ IO.popen(PSCMD + [$$.to_s], "r", err: [:child, :out], &:read) yield :size, $1.to_i*1024 yield :rss, $2.to_i*1024 end end end Status = Struct.new(*keys) class Status def _update Memory.read_status do |key, val| self[key] = val end end end class Status Header = members.map {|k| k.to_s.upcase.rjust(6)}.join('') Format = "%6d" def initialize _update end end end