① SIGINT 终止进程 中断进程 程序终止(interrupt)信号, 在用户键入INTR字符(通常是Ctrl-C)时发出。 ② SIGQUIT 建立CORE文件终止进程,并且生成core文件 ③ SIGQUIT 和 SIGINT 类似,但由QUIT字符(通常是Ctrl-)来控制;进程在因收到SIGQUIT退出时会产生core文件,在这个意义上类似于一个程序错误信号。 ④ SIGKILL ...
importsignalimportosimportsysimporttimeprint("The process's PID is:",os.getpid())defhandle_signal(signum,frame):print('Received and handle:',signum)defhandle_interrupt(signum,frame):print('Receive keyboard interrupt') sys.exit(0)#退出进程#注册信号处理程序signal.signal(signal.SIGINT,handle_interrup...
SIGINT 当键盘按下CTRL+C从shell中发出信号,信号被传递给shell中前台运行的进程,对应该信号的默认操作是中断 (INTERRUPT) 该进程。 SIGQUIT 当键盘按下CTRL+\从shell中发出信号,信号被传递给shell中前台运行的进程,对应该信号的默认操作是退出 (QUIT) 该进程。 SIGTSTP 当键盘按下CTRL+Z从shell中发出信号,信号被...
#include <signal.h> void ( *signal (int sig, void(*func)(int)) )(int); Language Level ANSI Threadsafe Yes Description The signal() function allows a program to choose one of several ways to handle an interrupt signal from the operating system or from the raise() function. If compiled...
The action taken when the interrupt signal is received depends on the value of func. Value Meaning SIG_DFL Default handling for the signal will occur. SIG_IGN The signal is to be ignored. As of Language Environment® Release 3, the defaults for SIGUSR1, SIGUSR2, SIGINT, and SIGTERM ar...
代码很简单,就是用signal注册SIGINT信号处理函数为sigint_handler,sigint_handler也只是打印一条信息而已,编译运行: 图中显示的^C就是我用键盘ctrl+c发出去的信号打印出来的,可见发了5次SIGINT信号,sigint_handler函数也执行了5次,好像signal注册的信号处理函数并不恢复成默认值,但是……请先看下面的实验二。
通常SIGINT(当用户按下 Ctrl-C 时由 shell 发送到程序的信号)会引发 KeyboardInterrupt。这个例子在它看到 SIGINT 时直接忽略了。输出中的每个 ^C 表示尝试从终端终止脚本。 从另一个终端使用 kill -USR1 72598 将脚本退出。 信号与线程 多线程环境下使用信号,只有 main thread 可以设置 signal 的 handler,也只...
SIGTERM, SIGINT, SIGHUP These signals are used to support the shutdown hook mechanism (java.lang.Runtime.addShutdownHook) when the VM is terminated abnormally. (Optional) SIGUSR1 This signal is used in the implementation of the java.lang.Thread.interrupt method. Not used starting with Oracle...
SIGINT is not supported for any Win32 application. When a CTRL+C interrupt occurs, Win32 operating systems generate a new thread to specifically handle that interrupt. This can cause a single-thread application, such as one in UNIX, to become multithreaded and cause unexpected behavior.The func...
This article will demonstrate multiple methods about how to handle the SIGINT signal in C. Use signal Function to Register SIGINT Signal Handler Routine SIGINT is one of the predefined signals that’s associated with the terminal interrupt character (commonly Ctrl+C). It causes the shell to stop...