信号常量

【Signal constants】

os.constants.signals 导出了以下信号常量。

【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