mirror of
https://github.com/ARM-software/workload-automation.git
synced 2024-10-06 19:01:15 +01:00
bb9f735cd4
Import Parameter from the module that defines it rather than from wa to avoid circular import errors.
144 lines
4.3 KiB
Python
144 lines
4.3 KiB
Python
import logging
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import os
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import shutil
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import sys
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import tempfile
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import threading
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import time
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from wa.framework.plugin import Parameter
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from wa.framework.exception import WorkerThreadError
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from wa.utils.misc import touch
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class LinuxAssistant(object):
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parameters = []
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def __init__(self, target):
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self.target = target
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def start(self):
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pass
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def extract_results(self, context):
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pass
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def stop(self):
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pass
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class AndroidAssistant(object):
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parameters = [
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Parameter('logcat_poll_period', kind=int,
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constraint=lambda x: x > 0,
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description="""
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Polling period for logcat in seconds. If not specified,
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no polling will be used.
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Logcat buffer on android is of limited size and it cannot be
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adjusted at run time. Depending on the amount of logging activity,
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the buffer may not be enought to capture comlete trace for a
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workload execution. For those situations, logcat may be polled
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periodically during the course of the run and stored in a
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temporary locaiton on the host. Setting the value of the poll
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period enables this behavior.
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"""),
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]
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def __init__(self, target, logcat_poll_period=None):
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self.target = target
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if logcat_poll_period:
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self.logcat_poller = LogcatPoller(target, logcat_poll_period)
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else:
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self.logcat_poller = None
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def start(self):
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if self.logcat_poller:
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self.logcat_poller.start()
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def stop(self):
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if self.logcat_poller:
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self.logcat_poller.stop()
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def extract_results(self, context):
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logcat_file = os.path.join(context.output_directory, 'logcat.log')
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self.dump_logcat(logcat_file)
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context.add_artifact('logcat', logcat_file, kind='log')
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self.clear_logcat()
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def dump_logcat(self, outfile):
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if self.logcat_poller:
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self.logcat_poller.write_log(outfile)
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else:
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self.target.dump_logcat(outfile)
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def clear_logcat(self):
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if self.logcat_poller:
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self.logcat_poller.clear_buffer()
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class LogcatPoller(threading.Thread):
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def __init__(self, target, period=60, timeout=30):
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super(LogcatPoller, self).__init__()
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self.target = target
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self.logger = logging.getLogger('logcat')
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self.period = period
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self.timeout = timeout
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self.stop_signal = threading.Event()
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self.lock = threading.Lock()
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self.buffer_file = tempfile.mktemp()
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self.last_poll = 0
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self.daemon = True
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self.exc = None
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def start(self):
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self.logger.debug('starting polling')
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try:
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while True:
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if self.stop_signal.is_set():
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break
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with self.lock:
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current_time = time.time()
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if (current_time - self.last_poll) >= self.period:
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self.poll()
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time.sleep(0.5)
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except Exception: # pylint: disable=W0703
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self.exc = WorkerThreadError(self.name, sys.exc_info())
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self.logger.debug('polling stopped')
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def stop(self):
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self.logger.debug('Stopping logcat polling')
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self.stop_signal.set()
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self.join(self.timeout)
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if self.is_alive():
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self.logger.error('Could not join logcat poller thread.')
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if self.exc:
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raise self.exc # pylint: disable=E0702
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def clear_buffer(self):
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self.logger.debug('clearing logcat buffer')
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with self.lock:
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self.target.clear_logcat()
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touch(self.buffer_file)
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def write_log(self, outfile):
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with self.lock:
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self.poll()
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if os.path.isfile(self.buffer_file):
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shutil.copy(self.buffer_file, outfile)
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else: # there was no logcat trace at this time
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touch(outfile)
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def close(self):
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self.logger.debug('closing poller')
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if os.path.isfile(self.buffer_file):
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os.remove(self.buffer_file)
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def poll(self):
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self.last_poll = time.time()
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self.target.dump_logcat(self.buffer_file, append=True, timeout=self.timeout)
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self.target.clear_logcat()
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