我有一个脚本在我的
linux服务器的后台运行,我想捕获像重启或任何会杀死这个脚本的信号,而是在实际退出之前保存任何importante信息.
我认为我需要捕获的大部分内容是SIGINT,SIGTERM,SIGHUP,SIGKILL.
如何捕获这些信号并使其执行退出功能,否则继续执行它正在执行的任何操作?
伪perl代码:
#!/usr/bin/perl use stricts; use warnings; while (true) { #my happy code is running #my happy code will sleep for a few until its breath is back to keep running. } #ops I have detected an evil force trying to kill me #let's call the safe exit. sub safe_exit() { # save stuff exit(1); }
<?PHP while (1) { #my happy code is running #my happy code will sleep for a few until its breath is back to keep running. } #ops I have detected an evil force trying to kill me #let's call the safe exit. function safe_exit() { # save stuff exit(1); } ?>
PHP使用
pcntl_signal
来注册信号处理程序,所以像这样:
declare(ticks = 1); function sig_handler($sig) { switch($sig) { case SIGINT: # one branch for signal... } } pcntl_signal(SIGINT,"sig_handler"); pcntl_signal(SIGTERM,"sig_handler"); pcntl_signal(SIGHUP,"sig_handler"); # nothing for SIGKILL as it won't work and trying to will give you a warning.
原文地址:https://www.jb51.cc/php/138248.html
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