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300b4c33 | 1 | #!/usr/bin/env python3 |
24a3136a | 2 | # example_api_test.py |
300b4c33 | 3 | # |
24a3136a | 4 | # Babeltrace example script based on the Babeltrace API test 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. | |
5aa9939f JD |
19 | # |
20 | # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
21 | # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
22 | # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | |
23 | # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
24 | # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
25 | # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
26 | # SOFTWARE. | |
24a3136a DS |
27 | |
28 | # This example uses the babeltrace python module | |
29 | # to partially test the api. | |
30 | ||
31 | import sys | |
62c4fc67 PP |
32 | import babeltrace.reader |
33 | ||
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34 | |
35 | # Check for path arg: | |
36 | if len(sys.argv) < 2: | |
a47ab64a | 37 | raise TypeError("Usage: python example-api-test.py path/to/file") |
24a3136a | 38 | |
74ea15ad | 39 | # Create TraceCollection and add trace: |
62c4fc67 | 40 | traces = babeltrace.reader.TraceCollection() |
74ea15ad | 41 | trace_handle = traces.add_trace(sys.argv[1], "ctf") |
24a3136a | 42 | if trace_handle is None: |
a47ab64a | 43 | raise IOError("Error adding trace") |
24a3136a DS |
44 | |
45 | # Listing events | |
24a3136a | 46 | print("--- Event list ---") |
8bb27181 | 47 | for event_declaration in trace_handle.events: |
a47ab64a JG |
48 | print("event : {}".format(event_declaration.name)) |
49 | if event_declaration.name == "sched_switch": | |
50 | for field_declaration in event_declaration.fields: | |
51 | print(field_declaration) | |
24a3136a DS |
52 | print("--- Done ---") |
53 | ||
74ea15ad | 54 | for event in traces.events: |
a47ab64a JG |
55 | print("TS: {}, {} : {}".format(event.timestamp, event.cycles, event.name)) |
56 | ||
57 | if event.name == "sched_switch": | |
58 | prev_comm = event["prev_comm"] | |
59 | if prev_comm is None: | |
60 | print("ERROR: Missing prev_comm context info") | |
61 | else: | |
62 | print("sched_switch prev_comm: {}".format(prev_comm)) | |
63 | ||
64 | if event.name == "exit_syscall": | |
65 | ret_code = event["ret"] | |
66 | if ret_code is None: | |
67 | print("ERROR: Unable to extract ret") | |
68 | else: | |
69 | print("exit_syscall ret: {}".format(ret_code)) |