转发iOS稳定性问题治理（字节跳动技术团队）
文中参考地址
[1]https://developer.apple.com/documentation/xcode/diagnosing_issues_using_crash_reports_and_device_logs/identifying_the_cause_of_common_crashes/addressing_watchdog_terminations
[2]https://geek-is-stupid.github.io/2018-10-15-0x8badf00d-ate-bad-food/
[3]https://honchwong.github.io/2018/05/05/Crash%E5%88%86%E6%9E%90%E7%B3%BB%E5%88%97%E4%B9%8B%E4%B8%80%EF%BC%9ALaunchDaemons%E4%B8%AD%E7%9A%84ReportCrash/
[4]https://zhuanlan.zhihu.com/p/37652140
[5]http://openfibers.github.io/blog/2016/10/22/deadlock-caused-by-dispatch-once/
