Class: Paraspec::Supervisor
- Inherits:
-
Object
- Object
- Paraspec::Supervisor
- Includes:
- DrbHelpers, ProcessHelpers
- Defined in:
- lib/paraspec/supervisor.rb
Overview
Supervisor is the process that spawns all other processes. Its primary responsibility is to be a “clean slate”, specifically the supervisor should not ever have any of the tests loaded in its address space.
Constant Summary
Constants included from DrbHelpers
Instance Method Summary collapse
- #ident ⇒ Object
-
#initialize(options = {}) ⇒ Supervisor
constructor
A new instance of Supervisor.
- #run ⇒ Object
- #run_supervisor ⇒ Object
- #wait_for_process(pid) ⇒ Object
Methods included from ProcessHelpers
Methods included from DrbHelpers
Constructor Details
#initialize(options = {}) ⇒ Supervisor
Returns a new instance of Supervisor.
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# File 'lib/paraspec/supervisor.rb', line 10 def initialize(={}) @original_process_title = $0 $0 = "#{@original_process_title} [supervisor]" Paraspec.logger.ident = '[s]' @concurrency = [:concurrency] || 1 @terminal = [:terminal] @options = end |
Instance Method Details
#ident ⇒ Object
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# File 'lib/paraspec/supervisor.rb', line 123 def ident "[s]" end |
#run ⇒ Object
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# File 'lib/paraspec/supervisor.rb', line 19 def run unless @terminal Process.setpgrp end supervisor_pid = $$ at_exit do # We fork, therefore this handler will be run in master and # workers as well but it should only run in supervisor. # Guard accordingly if $$ == supervisor_pid # first kill workers, then master ((@worker_pids || []) + [@master_pid]).compact.each do |pid| begin Process.kill('TERM', pid) rescue SystemCallError end end # then kill our process group unless @terminal kill_child_processes end end end rd, wr = IO.pipe if @master_pid = fork # parent wr.close @master_pipe = rd run_supervisor else # child - master $0 = "#{@original_process_title} [master]" if @options[:master_is_1] ENV['TEST_ENV_NUMBER'] = '1' end Paraspec.logger.ident = '[m]' rd.close master = Master.new(:supervisor_pipe => wr) master.run exit(0) end end |
#run_supervisor ⇒ Object
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# File 'lib/paraspec/supervisor.rb', line 64 def run_supervisor start_time = Time.now if master_client.request('non-example-exception-count').to_i == 0 master_client.request('suite-started') @worker_pipes = [] @worker_pids = [] 1.upto(@concurrency) do |i| rd, wr = IO.pipe if worker_pid = fork # parent wr.close @worker_pipes << rd @worker_pids << worker_pid else # child - worker $0 = "#{@original_process_title} [worker-#{i}]" Paraspec.logger.ident = "[w#{i}]" rd.close if RSpec.world.example_groups.count > 0 raise 'Example groups loaded too early/spilled across processes' end Worker.new(:number => i, :supervisor_pipe => wr).run exit(0) end end Paraspec.logger.debug_state("Waiting for workers") @worker_pids.each_with_index do |pid, i| Paraspec.logger.debug_state("Waiting for worker #{i+1} at #{pid}") wait_for_process(pid) end status = 0 else status = 1 end master_client.reconnect! puts "dumping summary" master_client.request('dump-summary') if status == 0 status = master_client.request('status') end Paraspec.logger.debug_state("Asking master to stop") master_client.request('stop') wait_for_process(@master_pid) exit status end |
#wait_for_process(pid) ⇒ Object
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# File 'lib/paraspec/supervisor.rb', line 115 def wait_for_process(pid) begin Process.wait(pid) rescue Errno::ECHILD # already dead end end |