我正在运行一个SpringBoot应用程序。我使用@PreDestroy批注添加了一些清理操作。当我使用杀死Tomcat的$ {PID}的SIGTERM终止进程时,它将通过调用标有@PreDestroy的方法来执行所有清理任务。但是,当我使用SIGKILL即杀死tomcat的-9 $ {PID}时,不会执行清理。
使用SIGKILL终止应用程序时,有什么方法可以使应用程序执行所有销毁工作?
答案 0 :(得分:0)
不,没有。常规kill
等待进程退出,而kill -9
不退出并立即终止进程。重要的是,不能捕获,阻止或忽略信号SIGKILL和SIGSTOP。 man 7 signal简要概述了每种信号的含义:
Signal Value Action Comment
──────────────────────────────────────────────────────────────────────
SIGHUP 1 Term Hangup detected on controlling terminal
or death of controlling process
SIGINT 2 Term Interrupt from keyboard
SIGQUIT 3 Core Quit from keyboard
SIGILL 4 Core Illegal Instruction
SIGABRT 6 Core Abort signal from abort(3)
SIGFPE 8 Core Floating-point exception
SIGKILL 9 Term Kill signal
SIGSEGV 11 Core Invalid memory reference
SIGPIPE 13 Term Broken pipe: write to pipe with no
readers; see pipe(7)
SIGALRM 14 Term Timer signal from alarm(2)
SIGTERM 15 Term Termination signal
SIGUSR1 30,10,16 Term User-defined signal 1
SIGUSR2 31,12,17 Term User-defined signal 2
SIGCHLD 20,17,18 Ign Child stopped or terminated
SIGCONT 19,18,25 Cont Continue if stopped
SIGSTOP 17,19,23 Stop Stop process
SIGTSTP 18,20,24 Stop Stop typed at terminal
SIGTTIN 21,21,26 Stop Terminal input for background process
SIGTTOU 22,22,27 Stop Terminal output for background process