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