def perf_process_events(self, source, condition):
had_events = True
while had_events:
had_events = False
for cpu in self.cpu_map:
event = self.evlist.read_on_cpu(cpu)
if event:
had_events = True
if event.type == perf.RECORD_FORK:
if event.pid == event.tid:
try:
self.ps.processes[event.pid] = procfs.process(
event.pid)
except: # short lived thread
pass
else:
try:
self.ps.processes[event.pid].threads.processes[
event.tid] = procfs.process(event.tid)
except AttributeError:
self.ps.processes[
event.pid].threads = procfs.pidstats(
"/proc/%d/task/" % event.pid)
elif event.type == perf.RECORD_EXIT:
del self.ps[int(event.tid)]
elif event.type == perf.RECORD_SAMPLE:
tid = event.sample_tid
if self.perf_counter.has_key(tid):
self.perf_counter[tid] += event.sample_period
else:
self.perf_counter[tid] = event.sample_period
self.show()
return True
def perf_process_events(self, source, condition):
had_events = True
while had_events:
had_events = False
for cpu in self.cpu_map:
event = self.evlist.read_on_cpu(cpu)
if event:
had_events = True
if event.type == perf.RECORD_FORK:
if event.pid == event.tid:
try:
self.ps.processes[event.pid] = procfs.process(event.pid)
except: # short lived thread
pass
else:
try:
self.ps.processes[event.pid].threads.processes[event.tid] = procfs.process(event.tid)
except AttributeError:
self.ps.processes[event.pid].threads = procfs.pidstats("/proc/%d/task/" % event.pid)
elif event.type == perf.RECORD_EXIT:
del self.ps[int(event.tid)]
elif event.type == perf.RECORD_SAMPLE:
tid = event.sample_tid
if self.perf_counter.has_key(tid):
self.perf_counter[tid] += event.sample_period
else:
self.perf_counter[tid] = event.sample_period
self.show()
return True
def _affinity_changeable(self, pid):
try:
process = procfs.process(pid)
if process["stat"].is_bound_to_cpu():
if process["stat"]["state"] == "Z":
log.debug(
"Affinity of zombie task with PID %d cannot be changed, the task's affinity mask is fixed."
% pid)
elif self._is_kthread(process):
log.debug(
"Affinity of kernel thread with PID %d cannot be changed, the task's affinity mask is fixed."
% pid)
else:
log.warn(
"Affinity of task with PID %d cannot be changed, the task's affinity mask is fixed."
% pid)
return 0
else:
return 1
except (OSError, IOError) as e:
if e.errno == errno.ENOENT or e.errno == errno.ESRCH:
log.debug(
"Failed to get task info for PID %d, the task vanished." %
pid)
return -1
else:
log.error("Failed to get task info for PID %d: %s" % (pid, e))
return -2
except (AttributeError, KeyError) as e:
log.error("Failed to get task info for PID %d: %s" % (pid, e))
return -2
def _affinity_changeable(self, pid, process=None):
try:
if process is None:
process = procfs.process(pid)
if process["stat"].is_bound_to_cpu():
if process["stat"]["state"] == "Z":
log.debug(
"Affinity of zombie task with PID %s cannot be changed, the task's affinity mask is fixed."
% pid)
elif len(process["cmdline"]) == 0:
log.debug(
"Affinity of kernel thread with PID %s cannot be changed, the task's affinity mask is fixed."
% pid)
else:
log.warn(
"Affinity of task with PID %s cannot be changed, the task's affinity mask is fixed."
% pid)
return 0
else:
return 1
except IOError as e:
if e[0] == errno.ENOENT or e[0] == errno.ESRCH:
log.debug(
"Unable to set affinity for PID %s, the task vanished." %
pid)
return -1
else:
log.error("Failed to get task info for PID %s: %s" %
(pid, str(e)))
return -2
except (OSError, AttributeError, KeyError) as e:
log.error("Failed to get task info for PID %s: %s" % (pid, str(e)))
return -2
def _get_cmdline(self, process):
if not isinstance(process, procfs.process):
pid = process
process = procfs.process(pid)
cmdline = procfs.process_cmdline(process)
if self._is_kthread(process):
cmdline = "[" + cmdline + "]"
return cmdline
