Class: Procview::Options

Inherits:
OpenStruct
  • Object
show all
Defined in:
lib/procview/options.rb

Constant Summary collapse

SYSRE = 
%r{^/(usr/(lib64|share|bin|sbin|tmp)|lib64|proc|etc|usr|var|sbin|bin|dev|selinux|$)}
DEFAULTS = 
{
  buckets: {},
  calls: false,
  debug: false,
  digits: 3,
  quiet: false,
  raw: false,
  missing: true,
  sys: true
}

Instance Method Summary collapse

Constructor Details

#initialize(argv) ⇒ Options

Returns a new instance of Options.



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
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
 
# File 'lib/procview/options.rb', line 23

def initialize argv
  super(DEFAULTS)

  OptionParser.new do |o|
    o.banner = "usage: #{o.program_name} [options] [-- command [args...]]"
    o.separator "Analyze a Linux strace file. Options (v#{VERSION}):"

    o.on('-f', '--file FILE', "Analyze strace file only") do |f|
      self.filename = f
    end
    o.on('--digits NUM', Integer, "Number of digits (default: #{self.digits})") do |d|
      self.digits = d
    end
    o.on('-p', '--pid PID', Integer, "Process ID to examine") do |p|
      self.pid = p
    end
    o.on('-s', '--system', "Summarize system files") do
      self.buckets[:'System files'] = [SYSRE, Stats.new]
    end
    o.on('--sum [name=]pattern', "Summarize patterns") do |sum|
      if sum =~/^(\w+)=(.*)$/
        self.buckets[$1] = [Regexp.new($2), Stats.new]
      else
        self.buckets[self.buckets.keys.size] = [Regexp.new(sum), Stats.new]
      end
    end
    o.on('-F', "Summarize all disk file activity") do
      self.buckets[:'All files'] = [%r{/.*}, Stats.new]
    end
    o.on('-c', "--calls", "Show calls and signals (default: #{self.calls})") do |c|
      self.calls = c
    end
    o.on('-m', "--[no-]missing", "Ignore missing files in open() and stat() calls (default: #{self.missing})") do |m|
      self.missing = m
    end
    o.on('-q', '--quiet', "Quiet - no errors (default: #{self.quiet})") do |q|
      self.quiet = q
    end
    o.on('-r', '--raw', "Raw trace - assume cwd and stdio (default: #{self.raw})") do |r|
      self.raw = r
    end
    o.on('-d', '--debug', "Debug - write trace to /tmp (default: #{self.debug})") do |d|
      self.debug = d
    end
    o.on_tail( '-?', '--help', 'Display this screen' ) do
      STDERR.puts o
      exit
    end
    o.parse!(argv) rescue (STDERR.puts "#{o.program_name}: #{$!}\n#{o.to_s}"; exit)
    if self.pid.nil? and self.filename.nil? and argv.size == 0
      STDERR.puts o.help
      exit 2
    end
  end
end