128 lines
3.3 KiB
Python
128 lines
3.3 KiB
Python
import threading
|
|
import queue
|
|
import time
|
|
|
|
class Job():
|
|
def __init__(self, func, args=[], kwargs={}, name=None):
|
|
if name == None:
|
|
name = 'job'
|
|
self.id = None
|
|
self.name = name
|
|
self.func = func
|
|
self.args = args
|
|
self.kwargs = kwargs
|
|
self.results = None
|
|
|
|
def run(self):
|
|
self.results = self.func(*self.args, **self.kwargs)
|
|
|
|
def set_name(self, name):
|
|
self.name = name
|
|
|
|
def set_id(self, jid):
|
|
self.id = jid
|
|
|
|
def __call__(self):
|
|
self.run()
|
|
|
|
class Worker(threading.Thread):
|
|
def __init__(self, work_queue, finished_queue):
|
|
super(Worker, self).__init__()
|
|
self.queue = work_queue
|
|
self.finished = finished_queue
|
|
self.terminate = False
|
|
self.daemon=True
|
|
|
|
def stop(self):
|
|
self.terminate = True
|
|
|
|
def run(self):
|
|
while not self.terminate:
|
|
try:
|
|
task = self.queue.get(timeout=1)
|
|
task.run()
|
|
self.queue.task_done()
|
|
self.finished.put(task)
|
|
except queue.Empty:
|
|
pass
|
|
except KeyboardInterrupt:
|
|
print("you stop the threading")
|
|
|
|
class ParallelHost():
|
|
def __init__(self, num_threads=8):
|
|
self.num_threads = num_threads
|
|
self.workers = []
|
|
self.tasks = queue.Queue()
|
|
self.results = queue.Queue()
|
|
self.rets = {}
|
|
self.id = 0
|
|
for i in range(self.num_threads):
|
|
worker = Worker(self.tasks, self.results)
|
|
self.workers.append(worker)
|
|
for worker in self.workers:
|
|
worker.start()
|
|
|
|
def __del__(self):
|
|
self.stop('kill')
|
|
|
|
# soft stop: wait until all job done
|
|
# hard stop: stop even with unfinished job
|
|
# kill stop: whatever the thread is doing, exit.
|
|
def stop(self, mode='soft'):
|
|
print('Trying to stop.')
|
|
if mode == 'soft':
|
|
self.tasks.join()
|
|
print('All job finished.')
|
|
for worker in self.workers:
|
|
worker.stop()
|
|
if mode == 'kill':
|
|
worker.join(0.01)
|
|
|
|
def commit(self, job):
|
|
self.id += 1
|
|
job.set_id(self.id)
|
|
self.tasks.put(job)
|
|
return self.id
|
|
|
|
def add_job(self, func, args=[], kwargs={}, name=None):
|
|
job = Job(func, args, kwargs, name)
|
|
return self.commit(job)
|
|
|
|
def collect_all(self):
|
|
while not self.results.empty():
|
|
task = self.results.get()
|
|
jid = task.id
|
|
self.rets[jid] = task.results
|
|
|
|
def get_result(self, jid, block=False):
|
|
if jid in self.rets:
|
|
ret = self.rets[jid]
|
|
del self.rets[jid]
|
|
return ret
|
|
while True:
|
|
if self.results.empty() and not block:
|
|
break
|
|
task = self.results.get()
|
|
if task.jid == jid:
|
|
return task.results
|
|
else:
|
|
self.rets[task.jid] = task.results
|
|
|
|
def clear_results(self):
|
|
while not self.results.empty():
|
|
self.results.get()
|
|
self.rets = {}
|
|
|
|
if __name__ == '__main__':
|
|
host = ParallelHost()
|
|
|
|
def loop_print(info, num):
|
|
for i in range(num):
|
|
print(info + ':' + str(i))
|
|
time.sleep(1)
|
|
|
|
for i in range(10):
|
|
host.add_job(loop_print, ["loop_print_{0}".format(i), 5])
|
|
|
|
host.terminate('kill')
|