这样做
import multiprocessing
import schedule
def worker():
#do some stuff
def sched(argv):
schedule.every(0.01).minutes.do(worker)
while True:
schedule.run_pending()
processs = []
..
..
p = multiprocessing.Process(target=sched,args)
..
..
processs.append(p)
for p in processs:
p.terminate()
如何优雅地杀死进程列表?
如果不行,有没有更简单的方法?
目标是重新加载配置文件到内存中,因此我想杀死所有子进程并创建其他进程,后者将读取新的配置文件。
编辑:添加了更多代码以说明我正在运行一个while True
循环
编辑:这是@dano suggestion之后的新代码
def get_config(self):
from ConfigParser import SafeConfigParser
..
return argv
def sched(self, args, event):
#schedule instruction:
schedule.every(0.01).minutes.do(self.worker,args)
while not event.is_set():
schedule.run_pending()
def dispatch_processs(self, conf):
processs = []
event = multiprocessing.Event()
for conf in self.get_config():
process = multiprocessing.Process(target=self.sched,args=( i for i in conf), kwargs={'event' : event})
processs.append((process, event)
return processs
def start_process(self, process):
process.start()
def gracefull_process(self, process):
process.join()
def main(self):
while True:
processs = self.dispatch_processs(self.get_config())
print ("%s processes running " % len(processs) )
for process, event in processs:
self.start_process(process)
time.sleep(1)
event.set()
self.gracefull_process(process)
代码的好处是,我可以编辑配置文件,进程将重新加载其配置。
问题在于只有第一个进程运行,其他进程被忽略。
编辑:这拯救了我的生命,在schedule()中使用while True不是一个好主意,所以我设置了refresh_time。
def sched(self, args, event):
schedule.every(0.01).minutes.do(self.worker,args)
for i in range(refresh_time):
schedule.run_pending()
time.sleep(1)
def start_processs(self, processs):
for p,event in processs:
if not p.is_alive():
p.start()
time.sleep(1)
event.set()
self.gracefull_processs(processs)
def gracefull_processs(self, processs):
for p,event in processs:
p.join()
processs = self.dispatch_processs(self.get_config())
self.start_processs(processs)
def main(self):
while True:
processs = self.dispatch_processs(self.get_config())
self.start_processs(processs)
break
print ("Reloading function main")
self.main()
multiprocessing.Event
来向工作进程发出关闭信号。 - dano