SA_SIGINFO tells the OS to queue this signal. The default is not to queue a signal delivered to a process. If a signal isn’t queued, setting the same signal multiple times on a process or thread before it runs results in only the last signal’s being delivered. If you set SA_SIGINFO, the signals are queued and they’re all delivered.
多个定时器几乎同时到时（比如1个100ms，1个50ms）, 部分定时器信号仍会丢失，设置SA_SIGINFO后信号排队了吗。
该问题如何解决呢，谢谢