信号常量

版本历史

版本	变更
v5.11.0	添加了对 `SIGINFO` 的支持。

以下信号常量由 os.constants.signals 导出。

常量	描述
`SIGHUP`	发送以指示控制终端何时关闭或父进程退出。
`SIGINT`	发送以指示用户何时希望中断进程 (`Ctrl`+`C`)。
`SIGQUIT`	发送以指示用户何时希望终止进程并执行核心转储。
`SIGILL`	发送给进程以通知其已尝试执行非法、格式错误、未知、或特权指令。
`SIGTRAP`	发生异常时发送给进程。
`SIGABRT`	发送给进程以请求其中止。
`SIGIOT`	`SIGABRT` 的同义词
`SIGBUS`	发送给进程以通知其已导致总线错误。
`SIGFPE`	发送给进程以通知其执行了非法的算术运算。
`SIGKILL`	发送给进程以立即终止其。
`SIGUSR1` `SIGUSR2`	发送给进程以识别用户定义的条件。
`SIGSEGV`	发送给进程以通知分段错误。
`SIGPIPE`	当进程尝试写入断开的管道时发送给进程。
`SIGALRM`	当系统定时器结束时发送给进程。
`SIGTERM`	发送给进程以请求终止。
`SIGCHLD`	当子进程终止时发送给进程。
`SIGSTKFLT`	发送给进程以指示协处理器上的堆栈错误。
`SIGCONT`	发送以指示操作系统继续暂停的进程。
`SIGSTOP`	发送以指示操作系统停止进程。
`SIGTSTP`	发送给进程以请求停止。
`SIGBREAK`	发送以指示用户何时希望中断进程。
`SIGTTIN`	在后台从终端读取时发送给进程。
`SIGTTOU`	在后台写入终端时发送给进程。
`SIGURG`	当套接字有紧急数据要读取时发送给进程。
`SIGXCPU`	当进程超过其 CPU 使用限制时发送给进程。
`SIGXFSZ`	当文件增长超过允许的最大值时发送给进程。
`SIGVTALRM`	当虚拟定时器已过时时发送给进程。
`SIGPROF`	当系统定时器已过时发送给进程。
`SIGWINCH`	当控制终端改变其大小时发送给进程。
`SIGIO`	当 I/O 可用时发送给进程。
`SIGPOLL`	`SIGIO` 的同义词
`SIGLOST`	当文件锁丢失时发送给进程。
`SIGPWR`	发送给进程以通知电源故障。
`SIGINFO`	`SIGPWR` 的同义词
`SIGSYS`	发送给进程以通知错误的参数。
`SIGUNUSED`	`SIGSYS` 的同义词

History

Version	Changes
v5.11.0	Added support for `SIGINFO`.

The following signal constants are exported by os.constants.signals.

Constant	Description
`SIGHUP`	Sent to indicate when a controlling terminal is closed or a parent process exits.
`SIGINT`	Sent to indicate when a user wishes to interrupt a process (`Ctrl`+`C`).
`SIGQUIT`	Sent to indicate when a user wishes to terminate a process and perform a core dump.
`SIGILL`	Sent to a process to notify that it has attempted to perform an illegal, malformed, unknown, or privileged instruction.
`SIGTRAP`	Sent to a process when an exception has occurred.
`SIGABRT`	Sent to a process to request that it abort.
`SIGIOT`	Synonym for `SIGABRT`
`SIGBUS`	Sent to a process to notify that it has caused a bus error.
`SIGFPE`	Sent to a process to notify that it has performed an illegal arithmetic operation.
`SIGKILL`	Sent to a process to terminate it immediately.
`SIGUSR1` `SIGUSR2`	Sent to a process to identify user-defined conditions.
`SIGSEGV`	Sent to a process to notify of a segmentation fault.
`SIGPIPE`	Sent to a process when it has attempted to write to a disconnected pipe.
`SIGALRM`	Sent to a process when a system timer elapses.
`SIGTERM`	Sent to a process to request termination.
`SIGCHLD`	Sent to a process when a child process terminates.
`SIGSTKFLT`	Sent to a process to indicate a stack fault on a coprocessor.
`SIGCONT`	Sent to instruct the operating system to continue a paused process.
`SIGSTOP`	Sent to instruct the operating system to halt a process.
`SIGTSTP`	Sent to a process to request it to stop.
`SIGBREAK`	Sent to indicate when a user wishes to interrupt a process.
`SIGTTIN`	Sent to a process when it reads from the TTY while in the background.
`SIGTTOU`	Sent to a process when it writes to the TTY while in the background.
`SIGURG`	Sent to a process when a socket has urgent data to read.
`SIGXCPU`	Sent to a process when it has exceeded its limit on CPU usage.
`SIGXFSZ`	Sent to a process when it grows a file larger than the maximum allowed.
`SIGVTALRM`	Sent to a process when a virtual timer has elapsed.
`SIGPROF`	Sent to a process when a system timer has elapsed.
`SIGWINCH`	Sent to a process when the controlling terminal has changed its size.
`SIGIO`	Sent to a process when I/O is available.
`SIGPOLL`	Synonym for `SIGIO`
`SIGLOST`	Sent to a process when a file lock has been lost.
`SIGPWR`	Sent to a process to notify of a power failure.
`SIGINFO`	Synonym for `SIGPWR`
`SIGSYS`	Sent to a process to notify of a bad argument.
`SIGUNUSED`	Synonym for `SIGSYS`