projects / babeltrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 24a3136a DS |
1 | # eventcountlist.py |
| 2 | # | |
| 3 | # Babeltrace event count list example script | |
| 4 | # | |
| 5 | # Copyright 2012 EfficiOS Inc. | |
| 6 | # | |
| 7 | # Author: Danny Serres <danny.serres@efficios.com> | |
| 8 | # | |
| 9 | # Permission is hereby granted, free of charge, to any person obtaining a copy | |
| 10 | # of this software and associated documentation files (the "Software"), to deal | |
| 11 | # in the Software without restriction, including without limitation the rights | |
| 12 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| 13 | # copies of the Software, and to permit persons to whom the Software is | |
| 14 | # furnished to do so, subject to the following conditions: | |
| 15 | # | |
| 16 | # The above copyright notice and this permission notice shall be included in | |
| 17 | # all copies or substantial portions of the Software. | |
| 18 | ||
| 19 | # The script prints a count and rate of events. | |
| 20 | # It also outputs a bar graph of count per event, using the cairoplot module. | |
| 21 | ||
| 22 | import sys | |
| 23 | from babeltrace import * | |
| 24 | from output_format_modules import cairoplot | |
| 25 | from output_format_modules.pprint_table import pprint_table as pprint | |
| 26 | ||
| 27 | # Check for path arg: | |
| 28 | if len(sys.argv) < 2: | |
| 29 | raise TypeError("Usage: python eventcountlist.py path/to/trace") | |
| 30 | ||
| 31 | ctx = Context() | |
| 32 | ret = ctx.add_trace(sys.argv[1], "ctf") | |
| 33 | if ret is None: | |
| 34 | raise IOError("Error adding trace") | |
| 35 | ||
| 36 | # Events and their assossiated count | |
| 37 | # will be stored as a dict: | |
| 38 | events_count = {} | |
| 39 | ||
| 40 | # Setting iterator: | |
| 41 | bp = IterPos(SEEK_BEGIN) | |
| 42 | ctf_it = ctf.Iterator(ctx,bp) | |
| 43 | ||
| 44 | prev_event = None | |
| 45 | event = ctf_it.read_event() | |
| 46 | ||
| 47 | start_time = event.get_timestamp() | |
| 48 | ||
| 49 | # Reading events: | |
| 50 | while(event is not None): | |
| 51 | if event.get_name() in events_count: | |
| 52 | events_count[event.get_name()] += 1 | |
| 53 | else: | |
| 54 | events_count[event.get_name()] = 1 | |
| 55 | ||
| 56 | ret = ctf_it.next() | |
| 57 | if ret < 0: | |
| 58 | break | |
| 59 | else: | |
| 60 | prev_event = event | |
| 61 | event = ctf_it.read_event() | |
| 62 | ||
| 63 | if event: | |
| 64 | total_time = event.get_timestamp() - start_time | |
| 65 | else: | |
| 66 | total_time = prev_event.get_timestamp() - start_time | |
| 67 | ||
| 68 | del ctf_it | |
| 69 | ||
| 70 | # Printing encountered events with respective count and rate: | |
| 71 | print("Total time: {} ns".format(total_time)) | |
| 72 | table = [["EVENT", "COUNT", "RATE (Hz)"]] | |
| 73 | for item in sorted(events_count.iterkeys()): | |
| 74 | tmp = [item, events_count[item], | |
| 75 | events_count[item]/(total_time/1000000000.0)] | |
| 76 | table.append(tmp) | |
| 77 | pprint(table) | |
| 78 | ||
| 79 | # Exporting data as bar graph | |
| 80 | cairoplot.vertical_bar_plot ( 'eventcountlist.svg', events_count, 50+85*len(events_count), | |
| 81 | 800, border = 20, display_values = True, grid = True, | |
| 82 | rounded_corners = True, | |
| 83 | x_labels = sorted(events_count.keys()) ) |