def _validate_pid(self, pid):
"""Validate the passed pid argument"""
if not pid:
pids = sched_funcs.get_pids_for_process(self._ftrace,
self.execname)
if len(pids) != 1:
raise RuntimeError(
"There should be exactly one PID {0} for {1}".format(
pids,
self.execname))
return pids[0]
elif self.execname:
pids = sched_funcs.get_pids_for_process(self._ftrace,
self.execname)
if pid not in pids:
raise RuntimeError(
"PID {0} not mapped to {1}".format(
pid,
self.execname))
else:
self.execname = sched_funcs.get_task_name(self._ftrace, pid)
return pid
def _populate_pids(self):
"""Map the input execnames to PIDs"""
if len(self._execnames) == 1:
return sched_funcs.get_pids_for_process(self._ftrace, self._execnames[0])
pids = []
for proc in self._execnames:
pids += sched_funcs.get_pids_for_process(self._ftrace, proc)
return list(set(pids))
def _populate_pids(self, run):
"""Populate the qualifying PIDs from the run"""
if len(self._execnames) == 1:
return sched_funcs.get_pids_for_process(run, self._execnames[0])
pids = []
for proc in self._execnames:
pids += sched_funcs.get_pids_for_process(run, proc)
return list(set(pids))
def _populate_pids(self):
"""Map the input execnames to PIDs"""
if len(self._execnames) == 1:
return sched_funcs.get_pids_for_process(self._ftrace, self._execnames[0])
pids = []
for proc in self._execnames:
pids += sched_funcs.get_pids_for_process(self._ftrace, proc)
return list(set(pids))
def _populate_pids(self, run):
"""Populate the qualifying PIDs from the run"""
if len(self._execnames) == 1:
return sched_funcs.get_pids_for_process(run, self._execnames[0])
pids = []
for proc in self._execnames:
pids += sched_funcs.get_pids_for_process(run, proc)
return list(set(pids))
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])
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_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])
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"
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
"""
with open(trace_file, "w") as fout:
fout.write(in_data)
trace = trappy.FTrace(trace_file)
self.assertEquals(get_pids_for_process(trace, "wmig"), [3268])
