gdb/testsuite/gdb.perf/lib/perftest/reporter.py

   1 # Copyright (C) 2013-2016 Free Software Foundation, Inc.
   2
   3 # This program is free software; you can redistribute it and/or modify
   4 # it under the terms of the GNU General Public License as published by
   5 # the Free Software Foundation; either version 3 of the License, or
   6 # (at your option) any later version.
   7 #
   8 # This program is distributed in the hope that it will be useful,
   9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11 # GNU General Public License for more details.
  12 #
  13 # You should have received a copy of the GNU General Public License
  14 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15
  16 # Text reports are written here.
  17 # This is the perftest counterpart to gdb.sum.
  18 SUM_FILE_NAME = "perftest.sum"
  19
  20 # Raw data that went into the report is written here.
  21 # This is the perftest counterpart to gdb.log.
  22 LOG_FILE_NAME = "perftest.log"
  23
  24
  25 class Reporter(object):
  26     """Base class of reporter to report test results in a certain format.
  27
  28     Subclass, which is specific to a report format, should overwrite
  29     methods report, start and end.
  30     """
  31
  32     def __init__(self, append):
  33         """Constructor of Reporter.
  34
  35         attribute append is used to determine whether to append or
  36         overwrite log file.
  37         """
  38         self.append = append
  39
  40     def report(self, *args):
  41         raise NotImplementedError("Abstract Method:report.")
  42
  43     def start(self):
  44         """Invoked when reporting is started."""
  45         raise NotImplementedError("Abstract Method:start.")
  46
  47     def end(self):
  48         """Invoked when reporting is done.
  49
  50         It must be overridden to do some cleanups, such as closing file
  51         descriptors.
  52         """
  53         raise NotImplementedError("Abstract Method:end.")
  54
  55
  56 class TextReporter(Reporter):
  57     """Report results in a plain text file 'perftest.log'."""
  58
  59     def __init__(self, append):
  60         super (TextReporter, self).__init__(Reporter(append))
  61         self.txt_sum = None
  62         self.txt_log = None
  63
  64     def report(self, test_name, measurement_name, data_points):
  65         if len(data_points) == 0:
  66             self.txt_sum.write("%s %s *no data recorded*\n" % (
  67                 test_name, measurement_name))
  68             return
  69         average = sum(data_points) / len(data_points)
  70         data_min = min(data_points)
  71         data_max = max(data_points)
  72         self.txt_sum.write("%s %s %s\n" % (
  73             test_name, measurement_name, average))
  74         self.txt_log.write("%s %s %s, min %s, max %s, data %s\n" % (
  75             test_name, measurement_name, average, data_min, data_max,
  76             data_points))
  77
  78     def start(self):
  79         mode = "a+" if self.append else "w"
  80         self.txt_sum = open (SUM_FILE_NAME, mode);
  81         self.txt_log = open (LOG_FILE_NAME, mode);
  82
  83     def end(self):
  84         self.txt_sum.close ()
  85         self.txt_log.close ()