我看pcntl源码中php_pcntl_pending_signal先初始化为32个,丢失信号的场景就是信号队列满了吧,代码如下: psig = PCNTL_G(spares); if (!psig) { / oops, too many signals for us to track, so we'll forget about this one / return; } 如果队列没满的话是可以继续处理的,如果满了,...