| # Copyright 2016-2016 ARM Limited |
| # |
| # Licensed under the Apache License, Version 2.0 (the "License"); |
| # you may not use this file except in compliance with the License. |
| # You may obtain a copy of the License at |
| # |
| # http://www.apache.org/licenses/LICENSE-2.0 |
| # |
| # Unless required by applicable law or agreed to in writing, software |
| # distributed under the License is distributed on an "AS IS" BASIS, |
| # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| # See the License for the specific language governing permissions and |
| # limitations under the License. |
| # |
| |
| import trappy |
| |
| import utils_tests |
| |
| class TestSchedFunctions(utils_tests.SetupDirectory): |
| def __init__(self, *args, **kwargs): |
| super(TestSchedFunctions, self).__init__([], *args, **kwargs) |
| |
| def test_get_pids_for_processes_no_sched_switch(self): |
| """get_pids_for_processes() raises an exception if the trace doesn't have a sched_switch event""" |
| from bart.sched.functions import get_pids_for_process |
| |
| trace_file = "trace.txt" |
| raw_trace_file = "trace.raw.txt" |
| |
| with open(trace_file, "w") as fout: |
| fout.write("") |
| |
| with open(raw_trace_file, "w") as fout: |
| fout.write("") |
| |
| trace = trappy.FTrace(trace_file) |
| with self.assertRaises(ValueError): |
| get_pids_for_process(trace, "foo") |
| |
| def test_get_pids_for_process_funny_process_names(self): |
| """get_pids_for_process() works when a process name is a substring of another""" |
| from bart.sched.functions import get_pids_for_process |
| |
| trace_file = "trace.txt" |
| raw_trace_file = "trace.raw.txt" |
| in_data = """ <idle>-0 [001] 10826.894644: sched_switch: prev_comm=swapper/1 prev_pid=0 prev_prio=120 prev_state=0 next_comm=rt-app next_pid=3268 next_prio=120 |
| wmig-3268 [001] 10826.894778: sched_switch: prev_comm=wmig prev_pid=3268 prev_prio=120 prev_state=1 next_comm=rt-app next_pid=3269 next_prio=120 |
| wmig1-3269 [001] 10826.905152: sched_switch: prev_comm=wmig1 prev_pid=3269 prev_prio=120 prev_state=1 next_comm=wmig next_pid=3268 next_prio=120 |
| wmig-3268 [001] 10826.915384: sched_switch: prev_comm=wmig prev_pid=3268 prev_prio=120 prev_state=1 next_comm=swapper/1 next_pid=0 next_prio=120 |
| <idle>-0 [005] 10826.995169: sched_switch: prev_comm=swapper/5 prev_pid=0 prev_prio=120 prev_state=0 next_comm=wmig1 next_pid=3269 next_prio=120 |
| wmig1-3269 [005] 10827.007064: sched_switch: prev_comm=wmig1 prev_pid=3269 prev_prio=120 prev_state=0 next_comm=wmig next_pid=3268 next_prio=120 |
| wmig-3268 [005] 10827.019061: sched_switch: prev_comm=wmig prev_pid=3268 prev_prio=120 prev_state=0 next_comm=wmig1 next_pid=3269 next_prio=120 |
| wmig1-3269 [005] 10827.031061: sched_switch: prev_comm=wmig1 prev_pid=3269 prev_prio=120 prev_state=0 next_comm=wmig next_pid=3268 next_prio=120 |
| wmig-3268 [005] 10827.050645: sched_switch: prev_comm=wmig prev_pid=3268 prev_prio=120 prev_state=1 next_comm=swapper/5 next_pid=0 next_prio=120 |
| """ |
| |
| # We create an empty trace.txt to please trappy ... |
| with open(trace_file, "w") as fout: |
| fout.write("") |
| |
| # ... but we only put the sched_switch events in the raw trace |
| # file because that's where trappy is going to look for |
| with open(raw_trace_file, "w") as fout: |
| fout.write(in_data) |
| |
| trace = trappy.FTrace(trace_file) |
| |
| self.assertEquals(get_pids_for_process(trace, "wmig"), [3268]) |