projects / babeltrace.git / blame
| Commit | Line | Data |
|---|---|---|
| 24a3136a DS |
1 | # eventcount.py |
| 2 | # | |
| 3 | # Babeltrace event count 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 of specified events and | |
| 20 | # their related tid's in a given trace. | |
| 21 | # The trace needs TID context (lttng add-context -k -t tid) | |
| 22 | ||
| 23 | import sys | |
| 24 | from babeltrace import * | |
| 25 | from output_format_modules.pprint_table import pprint_table as pprint | |
| 26 | ||
| 27 | if len(sys.argv) < 3: | |
| 28 | raise TypeError("Usage: python eventcount.py event1 [event2 ...] path/to/trace") | |
| 29 | ||
| 30 | ctx = Context() | |
| 31 | ret = ctx.add_trace(sys.argv[len(sys.argv)-1], "ctf") | |
| 32 | if ret is None: | |
| 33 | raise IOError("Error adding trace") | |
| 34 | ||
| 35 | counts = {} | |
| 36 | ||
| 37 | # Setting iterator | |
| 38 | bp = IterPos(SEEK_BEGIN) | |
| 39 | ctf_it = ctf.Iterator(ctx, bp) | |
| 40 | ||
| 41 | # Reading events | |
| 42 | event = ctf_it.read_event() | |
| 43 | while(event is not None): | |
| 44 | for event_type in sys.argv[1:len(sys.argv)-1]: | |
| 45 | if event_type == event.get_name(): | |
| 46 | ||
| 47 | # Getting scope definition | |
| 48 | sco = event.get_top_level_scope(ctf.scope.STREAM_EVENT_CONTEXT) | |
| 49 | if sco is None: | |
| 50 | print("ERROR: Cannot get definition scope for {}".format( | |
| 51 | event.get_name())) | |
| 52 | continue | |
| 53 | ||
| 54 | # Getting TID | |
| 55 | tid_field = event.get_field(sco, "_tid") | |
| 56 | tid = tid_field.get_int64() | |
| 57 | ||
| 58 | if ctf.field_error(): | |
| 59 | print("ERROR: Missing TID info for {}".format( | |
| 60 | event.get_name())) | |
| 61 | continue | |
| 62 | ||
| 63 | tmp = (tid, event.get_name()) | |
| 64 | ||
| 65 | if tmp in counts: | |
| 66 | counts[tmp] += 1 | |
| 67 | else: | |
| 68 | counts[tmp] = 1 | |
| 69 | ||
| 70 | # Next event | |
| 71 | ret = ctf_it.next() | |
| 72 | if ret < 0: | |
| 73 | break | |
| 74 | event = ctf_it.read_event() | |
| 75 | ||
| 76 | del ctf_it | |
| 77 | ||
| 78 | # Appending data to table for output | |
| 79 | table = [] | |
| 80 | for item in counts: | |
| 81 | table.append([item[0], item[1], counts[item]]) | |
| 82 | table = sorted(table) | |
| 83 | table.insert(0,["TID", "EVENT", "COUNT"]) | |
| 84 | pprint(table, 2) |