mutex.py 文件源码

def lock(self, id=None):
        c = 0
        waitTime = 5000  # in ms
        while True:
            if self.tryLock(waitTime, id):
                break
            c += 1
            if self.debug:
                self.l.lock()
                try:
                    print("Waiting for mutex lock (%0.1f sec). Traceback follows:" 
                          % (c*waitTime/1000.))
                    traceback.print_stack()
                    if len(self.tb) > 0:
                        print("Mutex is currently locked from:\n")
                        print(self.tb[-1])
                    else:
                        print("Mutex is currently locked from [???]")
                finally:
                    self.l.unlock()
        #print 'lock', self, len(self.tb)