Class: PPool::ProcessPool

Inherits:
Object
  • Object
show all
Defined in:
lib/process_pool.rb

Instance Method Summary collapse

Constructor Details

#initialize(controller) ⇒ ProcessPool

Returns a new instance of ProcessPool.



29
30
31
32
33
34
35
 
# File 'lib/process_pool.rb', line 29

def initialize(controller)
  @controller = controller
  @active_processes = 0
  @started_count = 0
  @ended_count = 0
  @errors = 0
end

Instance Method Details

#progress ⇒ Object 



91
92
93
94
95
96
97
98
99
 
# File 'lib/process_pool.rb', line 91

def progress

   @controller.progress({
	  :active_processes => @active_processes, 
	  :processes_started => @started_count, 
	  :processes_ended => @ended_count, 
	  :errors => @errors
   })
end

#run ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
 
# File 'lib/process_pool.rb', line 38

def run

  progress

  while @controller.running?

	num_processes = @controller.num_processes

	# Create processes
	while @active_processes < num_processes

	  @controller.info "num_proceses #{num_processes}, active_processes #{@active_processes}; forking"

	  pid = Process.fork do
 @controller.run_process
	  end


	  @active_processes = @active_processes + 1
	  @controller.process_started(pid, @active_processes)
	  @started_count = @started_count + 1

	  progress
	end

	doneWaiting = false
	while ! doneWaiting 
	 begin
pidStatus = Process.wait2(-1, Process::WNOHANG)
if pidStatus != nil
  @controller.process_ended(pidStatus[0], pidStatus[1].exitstatus)
  @active_processes = @active_processes - 1 
  @ended_count = @ended_count + 1
  if pidStatus[1].exitstatus != 0 
    @errors = @errors + 1
  end
else 
  doneWaiting = true
end
	 rescue => e
doneWaiting = true
	 end
   end

   progress

   Kernel.sleep @controller.delay

  end
  @controller.terminate

end