Extended maintenance of Ruby versions 1.8.7 and 1.9.2 ended on July 31, 2014. Read more

In Files

  • benchmark.rb

Class/Module Index [+]

Quicksearch

Benchmark::Tms

A data object, representing the times associated with a benchmark measurement.

Constants

CAPTION
FMTSTR

Attributes

cstime[R]

System CPU time of children

cutime[R]

User CPU time of children

label[R]

Label

real[R]

Elapsed real time

stime[R]

System CPU time

total[R]

Total time, that is utime + stime + cutime + cstime

utime[R]

User CPU time

Public Class Methods

new(u = 0.0, s = 0.0, cu = 0.0, cs = 0.0, real = 0.0, l = nil) click to toggle source

Returns an initialized Tms object which has u as the user CPU time, s as the system CPU time, cu as the children’s user CPU time, cs as the children’s system CPU time, real as the elapsed real time and l as the label.

 
               # File benchmark.rb, line 426
def initialize(u = 0.0, s = 0.0, cu = 0.0, cs = 0.0, real = 0.0, l = nil)
  @utime, @stime, @cutime, @cstime, @real, @label = u, s, cu, cs, real, l
  @total = @utime + @stime + @cutime + @cstime
end
            

Public Instance Methods

*(x) click to toggle source

Returns a new Tms object obtained by memberwise multiplication of the individual times for this Tms object by x.

 
               # File benchmark.rb, line 471
def *(x); memberwise(:*, x) end
            
+(other) click to toggle source

Returns a new Tms object obtained by memberwise summation of the individual times for this Tms object with those of the other Tms object. This method and #/() are useful for taking statistics.

 
               # File benchmark.rb, line 458
def +(other); memberwise(:+, other) end
            
-(other) click to toggle source

Returns a new Tms object obtained by memberwise subtraction of the individual times for the other Tms object from those of this Tms object.

 
               # File benchmark.rb, line 465
def -(other); memberwise(:-, other) end
            
/(x) click to toggle source

Returns a new Tms object obtained by memberwise division of the individual times for this Tms object by x. This method and #+() are useful for taking statistics.

 
               # File benchmark.rb, line 478
def /(x); memberwise(:/, x) end
            
add() click to toggle source

Returns a new Tms object whose times are the sum of the times for this Tms object, plus the time required to execute the code block (blk).

 
               # File benchmark.rb, line 435
def add(&blk) # :yield:
  self + Benchmark::measure(&blk) 
end
            
add!() click to toggle source

An in-place version of add.

 
               # File benchmark.rb, line 442
def add!
  t = Benchmark::measure(&blk) 
  @utime  = utime + t.utime
  @stime  = stime + t.stime
  @cutime = cutime + t.cutime
  @cstime = cstime + t.cstime
  @real   = real + t.real
  self
end
            
format(arg0 = nil, *args) click to toggle source

Returns the contents of this Tms object as a formatted string, according to a format string like that passed to Kernel.format. In addition, format accepts the following extensions:

%u

Replaced by the user CPU time, as reported by #utime.

%y

Replaced by the system CPU time, as reported by stime (Mnemonic: y of “s*y*stem”)

%U

Replaced by the children’s user CPU time, as reported by #cutime

%Y

Replaced by the children’s system CPU time, as reported by #cstime

%t

Replaced by the total CPU time, as reported by #total

%r

Replaced by the elapsed real time, as reported by #real

%n

Replaced by the label string, as reported by #label (Mnemonic: n of “*n*ame”)

If fmtstr is not given, FMTSTR is used as default value, detailing the user, system and real elapsed time.

 
               # File benchmark.rb, line 497
def format(arg0 = nil, *args)
  fmtstr = (arg0 || FMTSTR).dup
  fmtstr.gsub!(/(%[-+\.\d]*)n/){"#{$1}s" % label}
  fmtstr.gsub!(/(%[-+\.\d]*)u/){"#{$1}f" % utime}
  fmtstr.gsub!(/(%[-+\.\d]*)y/){"#{$1}f" % stime}
  fmtstr.gsub!(/(%[-+\.\d]*)U/){"#{$1}f" % cutime}
  fmtstr.gsub!(/(%[-+\.\d]*)Y/){"#{$1}f" % cstime}
  fmtstr.gsub!(/(%[-+\.\d]*)t/){"#{$1}f" % total}
  fmtstr.gsub!(/(%[-+\.\d]*)r/){"(#{$1}f)" % real}
  arg0 ? Kernel::format(fmtstr, *args) : fmtstr
end
            
to_a() click to toggle source

Returns a new 6-element array, consisting of the label, user CPU time, system CPU time, children’s user CPU time, children’s system CPU time and elapsed real time.

 
               # File benchmark.rb, line 522
def to_a
  [@label, @utime, @stime, @cutime, @cstime, @real]
end
            
to_s() click to toggle source

Same as format.

 
               # File benchmark.rb, line 512
def to_s
  format
end
            

Protected Instance Methods

memberwise(op, x) click to toggle source
 
               # File benchmark.rb, line 527
def memberwise(op, x)
  case x
  when Benchmark::Tms
    Benchmark::Tms.new(utime.__send__(op, x.utime),
                       stime.__send__(op, x.stime),
                       cutime.__send__(op, x.cutime),
                       cstime.__send__(op, x.cstime),
                       real.__send__(op, x.real)
                       )
  else
    Benchmark::Tms.new(utime.__send__(op, x),
                       stime.__send__(op, x),
                       cutime.__send__(op, x),
                       cstime.__send__(op, x),
                       real.__send__(op, x)
                       )
  end
end
            

Commenting is here to help enhance the documentation. For example, code samples, or clarification of the documentation.

If you have questions about Ruby or the documentation, please post to one of the Ruby mailing lists. You will get better, faster, help that way.

If you wish to post a correction of the docs, please do so, but also file bug report so that it can be corrected for the next release. Thank you.

If you want to help improve the Ruby documentation, please visit Documenting-ruby.org.

blog comments powered by Disqus