Class: ProcView

Inherits:
Object
  • Object
show all
Defined in:
lib/procview.rb,
lib/procview/version.rb

Constant Summary collapse

STRACE = 
%w{ /usr/bin/env strace -f -T -e desc,network,file }
LSOF = 
%w{ /usr/bin/env lsof }
VERSION = 
'0.6.1'

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(quiet = false) ⇒ ProcView

Returns a new instance of ProcView.



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# File 'lib/procview.rb', line 18

def initialize quiet=false
    @calls = Hash.new {|h,k| h[k] = [0,0.0]}
    @unk = []
    @hmap = Hash.new{|h,k| @unk.push k; h[k] = "h#{k}".to_sym;} # current handle map
    @quiet = quiet
    @iomap = Hash.new(0.0)
    @sigmap = Hash.new(0)
    @resume = []
    @debug = nil
end

Instance Attribute Details

#calls ⇒ Object (readonly)

Returns the value of attribute calls.



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# File 'lib/procview.rb', line 15

def calls
  @calls
end

#debug=(value) ⇒ Object (writeonly)

Sets the attribute debug

Parameters:

  • the value to set the attribute debug to.



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# File 'lib/procview.rb', line 16

def debug=(value)
  @debug = value
end

#hmap ⇒ Object (readonly)

Returns the value of attribute hmap.



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# File 'lib/procview.rb', line 15

def hmap
  @hmap
end

#iomap ⇒ Object (readonly)

Returns the value of attribute iomap.



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# File 'lib/procview.rb', line 15

def iomap
  @iomap
end

#resume ⇒ Object (readonly)

Returns the value of attribute resume.



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# File 'lib/procview.rb', line 15

def resume
  @resume
end

#sigmap ⇒ Object (readonly)

Returns the value of attribute sigmap.



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# File 'lib/procview.rb', line 15

def sigmap
  @sigmap
end

#unk ⇒ Object (readonly)

Returns the value of attribute unk.



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# File 'lib/procview.rb', line 15

def unk
  @unk
end

Instance Method Details

#checklsof ⇒ Object 



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# File 'lib/procview.rb', line 29

def checklsof
    lsof = `#{(ProcView::LSOF+%w{ -v 2>&1 }).join(' ')}`
    /\s+revision:\s+(?<rev>[.\d]+)\s+/ =~ lsof
    raise "'lsof' not found! Check that it is installed and on your PATH" if rev.nil?
    STDERR.puts "Using lsof #{rev}" unless @quiet
end

#checkstrace ⇒ Object 



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# File 'lib/procview.rb', line 36

def checkstrace
    strace = `#{(ProcView::STRACE+%w{ -V 2>&1 }).join(' ')}`
    /^strace\s+--\s+version\s+(?<rev>[.\d]+)$/ =~ strace
    raise "'strace' not found! Check that it is installed and on your PATH" if rev.nil?
    STDERR.puts "Using strace #{rev}" unless @quiet
end

#digest(line) ⇒ Object 



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# File 'lib/procview.rb', line 69

def digest line

    pid = (line.slice! /^(\d+)\s+/) ? $~[1].to_i: 0

    case line
    when /^TIME\s+/
        puts "TRACED on #{$'}"

    when /^REQUEST\s+/
        puts $'

    when /^LSOF/
        fields = line.split /\s+/
        unless fields.size > 9
            STDERR.print "Too few fields" unless @quiet
            return 1
        end
        handle = fields[4].chop.to_i
        @hmap[handle] = fields[9..-1].join(' ')

    when /^(?<call>\w+)
            \((?<args>.*)\)\s+=\s+(?<rc>-?\d+)\s*
            (?<ret>.*)\s*
            <(?<duration>.*)>$
        /x
        return handleCall($1.to_sym, $2, $3.to_i, $4, $5.to_f)

    when /<unfinished ...>/
        @resume.push $`
    when /<... (\w+) resumed>/
        call = $1.to_sym
        rest = $'.chomp
        prev = @resume.find_index {|f| f =~ /^#{call}/}
        unless prev
            STDERR.print "Failed to find resumable call" unless @quiet
            return 1
        end
        first = @resume.delete_at(prev)
        return digest (first+rest)

    when /^---\s*(\w+)\s*/
        signal = $1.to_sym
        @sigmap[signal] += 1
    else
        STDERR.print "Unknown" unless @quiet
        return 1
    end
    return 0
end

#load(io) ⇒ Object 



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# File 'lib/procview.rb', line 49

def load io
    badLines = 0
    while line = io.gets
        @debug.puts line if @debug
        begin
            if digest(line) > 0
                puts ": #{line}" unless @quiet
                badLines += 1
            end
        rescue StandardError => e
            STDERR.puts "#{e.message} (#{e.backtrace[0]}): #{line}" unless @quiet
            badLines += 1
        end
    end
    unless @quiet
        STDERR.puts "WARNING: Unknown handles: #{@unk.join(', ')}" if @unk.size > 0
        STDERR.puts "WARNING: #{badLines} bad lines" if badLines > 0
    end
end

#setupstdio ⇒ Object 



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# File 'lib/procview.rb', line 43

def setupstdio
    @hmap[0] = :stdin
    @hmap[1] = :stdout
    @hmap[2] = :stderr
end