def _updateCounterPathsForChildProcesses(self, counter):
# Create a counter path for each instance of the child process that
# is running. If any of these paths are not in our counter list,
# add them to our counter query and append them to the counter list,
# so that we'll begin tracking their statistics. We don't need to
# worry about removing invalid paths from the list, as
# getCounterValue() will generate a value of 0 for those.
hq = self.registeredCounters[counter][0]
oldCounterListLength = len(self.registeredCounters[counter][1])
pdh.PdhEnumObjectsA(None, None, 0, 1, 0, True)
expandedPaths = _getExpandedCounterPaths(self.childProcess, counter)
if not expandedPaths:
return
for expandedPath in expandedPaths:
alreadyInCounterList = False
for singleCounter in self.registeredCounters[counter][1]:
if expandedPath == singleCounter[1]:
alreadyInCounterList = True
if not alreadyInCounterList:
try:
newhc = HANDLE()
if pdh.PdhAddCounterA(hq, expandedPath, 0,
byref(newhc)) != 0:
raise TalosError(
"Could not add expanded win32 counter %s" %
expandedPath)
self.registeredCounters[counter][1].append(
(newhc, expandedPath))
except:
continue
if oldCounterListLength != len(self.registeredCounters[counter][1]):
pdh.PdhCollectQueryData(hq)
def _addCounter(self, processName, counterType, counterName):
pCounterPathElements = _PDH_COUNTER_PATH_ELEMENTS_A(
LPSTR(None),
LPSTR(counterType),
LPSTR(processName),
LPSTR(None),
DWORD(-1),
LPSTR(counterName)
)
pcchbufferSize = DWORD(0)
# First run we just try to get the buffer size so we can allocate a
# string big enough to fill it
if pdh.PdhMakeCounterPathA(pointer(pCounterPathElements),
LPCSTR(0), pointer(pcchbufferSize),
DWORD(0)) != _PDH_MORE_DATA:
raise TalosError(
"Could not create counter path for counter %s for %s"
% (counterName, processName)
)
szFullPathBuffer = LPCSTR('\0'*pcchbufferSize.value)
# Then we run to get the actual value
if pdh.PdhMakeCounterPathA(pointer(pCounterPathElements),
szFullPathBuffer, pointer(pcchbufferSize),
DWORD(0)) != 0:
raise TalosError(
"Could not create counter path for counter %s for %s"
% (counterName, processName)
)
path = szFullPathBuffer.value
hq = HANDLE()
if pdh.PdhOpenQuery(None, None, byref(hq)) != 0:
raise TalosError("Could not open win32 counter query")
hc = HANDLE()
if pdh.PdhAddCounterA(hq, path, 0, byref(hc)) != 0:
raise TalosError("Could not add win32 counter %s" % path)
self.registeredCounters[counterName] = [hq, [(hc, path)]]
def find_debugger_info(debug, debugger, debugger_args):
debuggerInfo = None
if debug or debugger or debugger_args:
import mozdebug
if not debugger:
# No debugger name was provided. Look for the default ones on
# current OS.
debugger = mozdebug.get_default_debugger_name(
mozdebug.DebuggerSearch.KeepLooking)
debuggerInfo = None
if debugger:
debuggerInfo = mozdebug.get_debugger_info(debugger, debugger_args)
if debuggerInfo is None:
raise TalosError(
'Could not find a suitable debugger in your PATH.')
return debuggerInfo
def run_browser(command,
minidump_dir,
timeout=None,
on_started=None,
debug=None,
debugger=None,
debugger_args=None,
**kwargs):
"""
Run the browser using the given `command`.
After the browser prints __endTimestamp, we give it 5
seconds to quit and kill it if it's still alive at that point.
Note that this method ensure that the process is killed at
the end. If this is not possible, an exception will be raised.
:param command: the commad (as a string list) to run the browser
:param minidump_dir: a path where to extract minidumps in case the
browser hang. This have to be the same value
used in `mozcrash.check_for_crashes`.
:param timeout: if specified, timeout to wait for the browser before
we raise a :class:`TalosError`
:param on_started: a callback that can be used to do things just after
the browser has been started. The callback must takes
an argument, which is the psutil.Process instance
:param kwargs: additional keyword arguments for the :class:`ProcessHandler`
instance
Returns a ProcessContext instance, with available output and pid used.
"""
debugger_info = find_debugger_info(debug, debugger, debugger_args)
if debugger_info is not None:
return run_in_debug_mode(command,
debugger_info,
on_started=on_started,
env=kwargs.get('env'))
context = ProcessContext()
first_time = int(time.time()) * 1000
wait_for_quit_timeout = 5
event = Event()
reader = Reader(event)
LOG.info("Using env: %s" % pprint.pformat(kwargs['env']))
kwargs['storeOutput'] = False
kwargs['processOutputLine'] = reader
kwargs['onFinish'] = event.set
proc = ProcessHandler(command, **kwargs)
reader.proc = proc
proc.run()
LOG.process_start(proc.pid, ' '.join(command))
try:
context.process = psutil.Process(proc.pid)
if on_started:
on_started(context.process)
# wait until we saw __endTimestamp in the proc output,
# or the browser just terminated - or we have a timeout
if not event.wait(timeout):
LOG.info("Timeout waiting for test completion; killing browser...")
# try to extract the minidump stack if the browser hangs
mozcrash.kill_and_get_minidump(proc.pid, minidump_dir)
raise TalosError("timeout")
if reader.got_end_timestamp:
for i in range(1, wait_for_quit_timeout):
if proc.wait(1) is not None:
break
if proc.poll() is None:
LOG.info(
"Browser shutdown timed out after {0} seconds, terminating"
" process.".format(wait_for_quit_timeout))
elif reader.got_timeout:
raise TalosError('TIMEOUT: %s' % reader.timeout_message)
finally:
# this also handle KeyboardInterrupt
# ensure early the process is really terminated
return_code = None
try:
return_code = context.kill_process()
if return_code is None:
return_code = proc.wait(1)
except Exception:
# Maybe killed by kill_and_get_minidump(), maybe ended?
LOG.info("Unable to kill process")
LOG.info(traceback.format_exc())
reader.output.append(
"__startBeforeLaunchTimestamp%d__endBeforeLaunchTimestamp" %
first_time)
reader.output.append(
"__startAfterTerminationTimestamp%d__endAfterTerminationTimestamp" %
(int(time.time()) * 1000))
if return_code is not None:
LOG.process_exit(proc.pid, return_code)
else:
LOG.debug("Unable to detect exit code of the process %s." % proc.pid)
context.output = reader.output
return context
def run_browser(command,
minidump_dir,
timeout=None,
on_started=None,
**kwargs):
"""
Run the browser using the given `command`.
After the browser prints __endTimestamp, we give it 5
seconds to quit and kill it if it's still alive at that point.
Note that this method ensure that the process is killed at
the end. If this is not possible, an exception will be raised.
:param command: the commad (as a string list) to run the browser
:param minidump_dir: a path where to extract minidumps in case the
browser hang. This have to be the same value
used in `mozcrash.check_for_crashes`.
:param timeout: if specified, timeout to wait for the browser before
we raise a :class:`TalosError`
:param on_started: a callback that can be used to do things just after
the browser has been started. The callback must takes
an argument, which is the psutil.Process instance
:param kwargs: additional keyword arguments for the :class:`ProcessHandler`
instance
Returns a ProcessContext instance, with available output and pid used.
"""
context = ProcessContext()
first_time = int(time.time()) * 1000
wait_for_quit_timeout = 5
event = Event()
reader = Reader(event)
kwargs['storeOutput'] = False
kwargs['processOutputLine'] = reader
kwargs['onFinish'] = event.set
proc = ProcessHandler(command, **kwargs)
proc.run()
try:
context.process = psutil.Process(proc.pid)
if on_started:
on_started(context.process)
# wait until we saw __endTimestamp in the proc output,
# or the browser just terminated - or we have a timeout
if not event.wait(timeout):
# try to extract the minidump stack if the browser hangs
mozcrash.kill_and_get_minidump(proc.pid, minidump_dir)
raise TalosError("timeout")
if reader.got_end_timestamp:
for i in range(1, wait_for_quit_timeout):
if proc.wait(1) is not None:
break
if proc.poll() is None:
logging.info(
"Browser shutdown timed out after {0} seconds, terminating"
" process.".format(wait_for_quit_timeout))
elif reader.got_timeout:
raise TalosError('TIMEOUT: %s' % reader.timeout_message)
finally:
# this also handle KeyboardInterrupt
# ensure early the process is really terminated
context.kill_process()
return_code = proc.wait(1)
reader.output.append(
"__startBeforeLaunchTimestamp%d__endBeforeLaunchTimestamp" %
first_time)
reader.output.append(
"__startAfterTerminationTimestamp%d__endAfterTerminationTimestamp" %
(int(time.time()) * 1000))
logging.info("Browser exited with error code: {0}".format(return_code))
context.output = reader.output
return context
