Class: Procmon::ProcessConditions::MemUsage

Inherits:
ProcessCondition show all
Defined in:
lib/procmon/process_conditions/mem_usage.rb

Constant Summary collapse

MB = 
1024 ** 2
FORMAT_STR = 
"%d%s"
MB_LABEL = 
"MB"
KB_LABEL = 
"KB"

Instance Attribute Summary

Attributes inherited from ProcessCondition

#actions

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ MemUsage

Returns a new instance of MemUsage.



9
10
11
12
13
14
15
16
17
18
 
# File 'lib/procmon/process_conditions/mem_usage.rb', line 9

def initialize(options = {})
  super(options)
  @below = options[:below]
  @above = options[:above]
  if @below && @above && @below < @above
    raise "Invalid range for mem check condition"
  elsif @below.nil? && @above.nil?
    raise "Invalid range for mem check condition"
  end
end

Instance Method Details

#check(value) ⇒ Object 



25
26
27
28
29
30
31
32
33
 
# File 'lib/procmon/process_conditions/mem_usage.rb', line 25

def check(value)
  if @below && @above
    value.kilobytes < @below && value.kilobytes > @above
  elsif @below
    value.kilobytes < @below 
  elsif @above
    value.kilobytes > @above
  end
end

#description ⇒ Object 



43
44
45
46
47
48
49
 
# File 'lib/procmon/process_conditions/mem_usage.rb', line 43

def description
  ret = "Memory usage is "
  conditions = {}
  conditions[:below] = @options[:below] if @options[:below]
  conditions[:above] = @options[:above] if @options[:above]
  ret += conditions.inspect
end

#format_value(value) ⇒ Object 



35
36
37
38
39
40
41
 
# File 'lib/procmon/process_conditions/mem_usage.rb', line 35

def format_value(value)
  if value.kilobytes >= MB
    FORMAT_STR % [(value / 1024).round, MB_LABEL]
  else
    FORMAT_STR % [value, KB_LABEL]
  end
end

#run(pid) ⇒ Object 



20
21
22
23
 
# File 'lib/procmon/process_conditions/mem_usage.rb', line 20

def run(pid)
  # rss is on the 5th col
  System.memory_usage(pid).to_f
end