bindings/python/babeltrace/examples/sequence_test.py

   1 #!/usr/bin/env python3
   2 # sequence_test.py
   3 #
   4 # Babeltrace example script based on the Babeltrace API test script
   5 #
   6 # Copyright 2013 Xiaona Han
   7 # Copyright 2012 EfficiOS Inc.
   8 #
   9 # Author: Danny Serres <danny.serres@efficios.com>
  10 # Author: Xiaona Han <xiaonahappy13@163.com>
  11 #
  12 # Permission is hereby granted, free of charge, to any person obtaining a copy
  13 # of this software and associated documentation files (the "Software"), to deal
  14 # in the Software without restriction, including without limitation the rights
  15 # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  16 # copies of the Software, and to permit persons to whom the Software is
  17 # furnished to do so, subject to the following conditions:
  18 #
  19 # The above copyright notice and this permission notice shall be included in
  20 # all copies or substantial portions of the Software.
  21
  22 # This example uses the babeltrace python module
  23 # to partially test the sequence API
  24
  25 import sys
  26 from babeltrace import *
  27
  28 # Check for path arg:
  29 if len(sys.argv) < 2:
  30         raise TypeError("Usage: sequence_test.py path/to/file")
  31
  32 # Create TraceCollection and add trace:
  33 traces = TraceCollection()
  34 trace_handle = traces.add_trace(sys.argv[1], "ctf")
  35 if trace_handle is None:
  36         raise IOError("Error adding trace")
  37
  38 # Listing events
  39 print("--- Event list ---")
  40 for event_declaration in trace_handle.events:
  41         print("event : {}".format(event_declaration.name))
  42 print("--- Done ---")
  43
  44 for event in traces.events:
  45         print("TS: {}, {} : {}".format(event.timestamp,
  46                 event.cycles, event.name))
  47
  48         try:
  49                 sequence = event["seq_int_field"]
  50                 print("int sequence values: {}". format(sequence))
  51         except KeyError:
  52                 pass
  53
  54         try:
  55                 sequence = event["seq_long_field"]
  56                 print("long sequence values: {}". format(sequence))
  57         except KeyError:
  58                 pass