Factory function that returns a new reentrant lock.
A reentrant lock must be released by the thread that acquired it. Once a thread has acquired a reentrant lock, the same thread may acquire it again without blocking; the thread must release it once for each time it has acquired it
可重入锁必须由获取它的线程释放。一旦一个线程获取了可重入锁定，同一个线程就可以再次获取它而不会阻塞；线程每次获取它时都必须释放它一次
# 使用如下：
import os
import json
import threading
from collections import OrderedDictpath = os.path.abspath(os.path.dirname(os.path.dirname(__file__)))
report_name = os.path.join(path, 'result/test_report.json')lock = threading.RLock()def refresh_report(**kwargs):lock.acquire()try:with open(report_name, 'r') as f:data = json.load(f)data_now = dataif kwargs.get("component"):comp = kwargs['component'] + "StressTest"for k, v in kwargs.items():if k == 'component':continuedata_now[comp][k] = velse:for k, v in kwargs.items():data_now["FinalResult"][k] = vwith open(report_name, 'w') as f:json.dump(OrderedDict(data_now), f, indent=4, ensure_ascii=False)except Exception as e:print("write " + report_name + "error:" + str(e))return Falsefinally:lock.release()return True
