如何理解ReentrantReadWriteLock的“非公平”模式?(How to understand the “non-fair” mode of ReentrantReadWriteLock?)
ReentrantReadWriteLock具有公平和不公平的(默认)模式,但该文档对我来说很难理解。
我怎么理解它? 如果有一些代码示例来演示它,那很棒。
UPDATE
如果我有一个写作线程和很多很多阅读线程,哪个模式更好用? 如果我使用非公平模式,写入线程是否有可能获得锁定?
ReentrantReadWriteLock has a fair and non-fair(default) mode, but the document is so hard for me to understand it.
How can I understand it? It's great if there is some code example to demo it.
UPDATE
If I have a writing thread, and many many reading thread, which mode is better to use? If I use non-fair mode, is it possible the writing thread has little chance to get the lock?
原文:https://stackoverflow.com/questions/7962312
最满意答案
您可能正在使用自签名的SSL certifiacate,如果设置了CURLOPT_SSL_VERIFYPEER选项,它将不会通过。
有两种解决方案:
- 购买有效的SSL证书。
- 在Curl中禁用SSL验证。 ( 添加 - disincure选项 )
如果您禁用验证,则无法确定您是否真的与主机通信。 所以这取决于你需要的安全级别。
You are probably using self-signed SSL certifiacate, which will not pass when the CURLOPT_SSL_VERIFYPEER options is set.
There are two solutions:
- Buy valid SSL certificate.
- Disable SSL verification in Curl. (add --insecure option)
If you disable verification, you can't be sure if you are really communicating with your host. So it depends on level of security you need.
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