projects / babeltrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 300b4c33 | 1 | #!/usr/bin/env python2 |
| 24a3136a | 2 | # eventcountlist.py |
| 300b4c33 | 3 | # |
| 24a3136a | 4 | # Babeltrace event count list example script |
| 300b4c33 | 5 | # |
| 24a3136a | 6 | # Copyright 2012 EfficiOS Inc. |
| 300b4c33 | 7 | # |
| 24a3136a | 8 | # Author: Danny Serres <danny.serres@efficios.com> |
| 300b4c33 | 9 | # |
| 24a3136a DS |
10 | # Permission is hereby granted, free of charge, to any person obtaining a copy |
| 11 | # of this software and associated documentation files (the "Software"), to deal | |
| 12 | # in the Software without restriction, including without limitation the rights | |
| 13 | # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
| 14 | # copies of the Software, and to permit persons to whom the Software is | |
| 15 | # furnished to do so, subject to the following conditions: | |
| 300b4c33 | 16 | # |
| 24a3136a DS |
17 | # The above copyright notice and this permission notice shall be included in |
| 18 | # all copies or substantial portions of the Software. | |
| 19 | ||
| 20 | # The script prints a count and rate of events. | |
| 21 | # It also outputs a bar graph of count per event, using the cairoplot module. | |
| 22 | ||
| 23 | import sys | |
| 24 | from babeltrace import * | |
| 25 | from output_format_modules import cairoplot | |
| 26 | from output_format_modules.pprint_table import pprint_table as pprint | |
| 27 | ||
| 28 | # Check for path arg: | |
| 29 | if len(sys.argv) < 2: | |
| 30 | raise TypeError("Usage: python eventcountlist.py path/to/trace") | |
| 31 | ||
| 32 | ctx = Context() | |
| 33 | ret = ctx.add_trace(sys.argv[1], "ctf") | |
| 34 | if ret is None: | |
| 35 | raise IOError("Error adding trace") | |
| 36 | ||
| 37 | # Events and their assossiated count | |
| 38 | # will be stored as a dict: | |
| 39 | events_count = {} | |
| 40 | ||
| 41 | # Setting iterator: | |
| 42 | bp = IterPos(SEEK_BEGIN) | |
| 43 | ctf_it = ctf.Iterator(ctx,bp) | |
| 44 | ||
| 45 | prev_event = None | |
| 46 | event = ctf_it.read_event() | |
| 47 | ||
| 48 | start_time = event.get_timestamp() | |
| 49 | ||
| 50 | # Reading events: | |
| 51 | while(event is not None): | |
| 52 | if event.get_name() in events_count: | |
| 53 | events_count[event.get_name()] += 1 | |
| 54 | else: | |
| 55 | events_count[event.get_name()] = 1 | |
| 56 | ||
| 57 | ret = ctf_it.next() | |
| 58 | if ret < 0: | |
| 59 | break | |
| 60 | else: | |
| 61 | prev_event = event | |
| 62 | event = ctf_it.read_event() | |
| 63 | ||
| 64 | if event: | |
| 65 | total_time = event.get_timestamp() - start_time | |
| 66 | else: | |
| 67 | total_time = prev_event.get_timestamp() - start_time | |
| 68 | ||
| 69 | del ctf_it | |
| 70 | ||
| 71 | # Printing encountered events with respective count and rate: | |
| 72 | print("Total time: {} ns".format(total_time)) | |
| 73 | table = [["EVENT", "COUNT", "RATE (Hz)"]] | |
| 74 | for item in sorted(events_count.iterkeys()): | |
| 75 | tmp = [item, events_count[item], | |
| 76 | events_count[item]/(total_time/1000000000.0)] | |
| 77 | table.append(tmp) | |
| 78 | pprint(table) | |
| 79 | ||
| 80 | # Exporting data as bar graph | |
| 81 | cairoplot.vertical_bar_plot ( 'eventcountlist.svg', events_count, 50+85*len(events_count), | |
| 82 | 800, border = 20, display_values = True, grid = True, | |
| 83 | rounded_corners = True, | |
| 84 | x_labels = sorted(events_count.keys()) ) |