def worker_process(self, log_queue):
""" Simple multi-processing target that uses the helper log
configuration in applog, and logs the current process name and an
expected string.
"""
applog.process_log_configure(log_queue)
# The root logger has now been created for this process, along with the
# queue handler. Get a reference to the root_log and write a debug log
# entry. In a real application the module level log =
# logging.getLogger(__name__) still will be called, but then the log
# module level variable will be overwritten witht the root logger
# created in the applog.process_log_configure call above.
root_log = logging.getLogger()
proc_name = multiprocessing.current_process().name
root_log.debug("%s Sub process debug log info", proc_name)
def worker_process(self, log_queue):
""" Simple multi-processing target that uses the helper log
configuration in applog, and logs the current process name and an
expected string.
"""
applog.process_log_configure(log_queue)
# The root logger has now been created for this process, along with the
# queue handler. Get a reference to the root_log and write a debug log
# entry. In a real application the module level log =
# logging.getLogger(__name__) still will be called, but then the log
# module level variable will be overwritten witht the root logger
# created in the applog.process_log_configure call above.
root_log = logging.getLogger()
proc_name = multiprocessing.current_process().name
root_log.debug("%s Sub process debug log info", proc_name)
def run(self, log_queue, delay_time, results, control):
""" Main infinite loop for acquiring from hardware device. Searches for
any entry on the control queue to indicate a poison pill. Read from the
hardware device at every pass, and if the current data queue is empty
(by reading from it in a different process), add it to the data queue.
"""
applog.process_log_configure(log_queue)
import_str = "devices.{0}()".format(self.device_name)
log.debug("Import of %s", import_str)
device = eval(import_str)
log.debug("Start of while loop with delay [%s]", delay_time)
while True:
if control.full():
log.debug("Control queue full, exit poison pill")
self.print_exit_stats()
break
self.read_count += 1
msg = (self.read_count, device.read())
if results.empty():
try:
results.put(msg, block=False)
# Silent failures on exit if you don't catch this exception
except Queue.Full:
pass
if delay_time is not None:
time.sleep(delay_time)
log.debug("End of run while")