| 1 | #!/usr/bin/env python3 |
| 2 | # example_api_test.py |
| 3 | # |
| 4 | # Babeltrace example script based on the Babeltrace API test script |
| 5 | # |
| 6 | # Copyright 2012 EfficiOS Inc. |
| 7 | # |
| 8 | # Author: Danny Serres <danny.serres@efficios.com> |
| 9 | # |
| 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: |
| 16 | # |
| 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 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. |
| 27 | |
| 28 | # This example uses the babeltrace python module |
| 29 | # to partially test the api. |
| 30 | |
| 31 | import sys |
| 32 | import babeltrace.reader |
| 33 | |
| 34 | |
| 35 | # Check for path arg: |
| 36 | if len(sys.argv) < 2: |
| 37 | raise TypeError("Usage: python example-api-test.py path/to/file") |
| 38 | |
| 39 | # Create TraceCollection and add trace: |
| 40 | traces = babeltrace.reader.TraceCollection() |
| 41 | trace_handle = traces.add_trace(sys.argv[1], "ctf") |
| 42 | if trace_handle is None: |
| 43 | raise IOError("Error adding trace") |
| 44 | |
| 45 | # Listing events |
| 46 | print("--- Event list ---") |
| 47 | for event_declaration in trace_handle.events: |
| 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) |
| 52 | print("--- Done ---") |
| 53 | |
| 54 | for event in traces.events: |
| 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)) |