对数据调用进行设置:点击File(文件)菜单下的Load Signal(调用信号)并选中Load using Signal Details(按照信号细节的规定调用)。
基于24个网页-相关网页
本例是把插槽连接到信号并调用信号的基本例子。
This example is a basic example of connecting a slot to a signal and then invoking the signal.
然后使用值18 (SIGCHLD)来调用信号处理程序,确认子进程的退出,并且父进程返回到sleep (60)。
The signal handler is called with a value of 18 (SIGCHLD), the child's exit is acknowledged, and the parent goes back to its sleep (60).
在第 2 种情况中,我们使用了 Linux 中的 strace 实用程序,它能够跟踪系统调用和信号,从而找出程序发生错误的地方。
Scenario 2 uses the strace utility in Linux that enables the tracing of system calls and signals to identify where a program is failing.
应用推荐