[Zero Iteration] add control measuring thread in measurer

Author: Nikita

main.rb

@@ -112,8 +112,6 @@ def work
     end
 
     File.write('result.json', "#{report.to_json}\n")
-
-    puts "MEMORY USAGE: #{(`ps -o rss= -p #{Process.pid}`.to_i / 1024)} MB" if is_print_memory_usage
   end
 
   def parse_user(user)

measurer.rb

@@ -1,10 +1,27 @@
 require_relative 'main'
 
 class Measurer
-  def call
-    Main.new(options: { count_lines: 15_000, is_print_memory_usage: true }).call
+  MEMORY_USAGE_LIMIT_MB = 70
+  CHECK_USAGE_INTERVAL_SEC = 1
+
+  def initialize
+
+  def call = [memory_measurer_thread, work_thread].map(&:join)
+
+  private
+
+  attr_reader :count_lines
+
+  def work_thread = Thread.new { Main.new.call }
+
+  def memory_measurer_thread = Thread.new do
+    sleep CHECK_USAGE_INTERVAL_SEC
+    current_memory_usage_mb = `ps -o rss= -p #{Process.pid}`.to_i / 1024
+    if current_memory_usage_mb > MEMORY_USAGE_LIMIT_MB
+      puts "MEMORY USAGE: #{current_memory_usage_mb} MB, BUT LIMIT: #{MEMORY_USAGE_LIMIT_MB}"
+      exit
+    end
   end
 end
 
-# Zero iteration:
-# 15_000 lines: 103 MB
+# Zero iteration: 103 MB