1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
|
module God
module System
class Process
def self.fetch_system_poller
@@poller ||= if SlashProcPoller.usable?
SlashProcPoller
else
PortablePoller
end
end
def initialize(pid)
@pid = pid.to_i
@poller = self.class.fetch_system_poller.new(@pid)
end
# Return true if this process is running, false otherwise
def exists?
!!::Process.kill(0, @pid) rescue false
end
# Memory usage in kilobytes (resident set size)
def memory
@poller.memory
end
# Percentage memory usage
def percent_memory
@poller.percent_memory
end
# Percentage CPU usage
def percent_cpu
@poller.percent_cpu
end
private
def fetch_system_poller
if SlashProcPoller.usable?
SlashProcPoller
else
PortablePoller
end
end
end
end
end
|
