bugfix

appPublic/process_workers.py

@@ -0,0 +1,36 @@
+import time
+from multiprocessing import Process
+import threading
+import random
+from appPublic.background import Background
+
+class ProcessWorkers:
+	def __init__(self, worker_cnt=10):
+		self.semaphore = threading.Semaphore(value=worker_cnt)
+		self.co_worker = 0
+	def _do(self, func, *args, **kwargs):
+		self.semaphore.acquire()
+		self.co_worker += 1
+		p = Process(target=func, args=args, kwargs=kwargs)
+		p.start()
+		p.join()
+		self.co_worker -= 1
+		self.semaphore.release()
+
+	def do(self, func, *args, **kwargs):
+		b = Background(self._do, func, *args, **kwargs)
+		b.start()
+
+	def get_workers(self):
+		return self.co_worker
+
+if __name__ == '__main__':
+	def k(worker):
+		t = random.randint(1,4)
+		print('current workers=',worker.get_workers(), 'sleep=', t)
+		time.sleep(t)
+
+	w = ProcessWorkers()
+	for i in range(100):
+		w.do(k, w)
+