殺死被「系統」調用吸收，從不觸發pcntl_signal

Question

我有一個守護進程腳本，我試圖通過避免線程保持簡單。

當我ctrl-c或殺死PID，「系統」調用退出，但不調用exitFunction。

declare(ticks = 100); 

function exitFunction($signo) { 
    global $pidFile, $exit; 
    unlink($pidFile); 
    echo "Daemon is exiting (signal: $signo). Removing pidFile: $pidFile\n"; 
    $exit = true; 
}; 
//create the signal handler and shutdown function 
pcntl_signal(SIGINT, "exitFunction"); 
pcntl_signal(SIGTERM, "exitFunction"); 

//create the pid file with our command 
file_put_contents($pidFile, posix_getpid()); 

echo "pid: " . posix_getpid() . "\n"; 
echo "Time to start!\n"; 
while(!$exit) { 
    echo "running $command...\n"; 
    system($command, $return); 
    echo "done $command\n"; 
    if($return) { 
     echo "didn't find any domains with command, so sleeping for 60...\n"; 
     sleep(60); 
    } 
} 

Answer 1

您需要添加declare(ticks=1);作爲腳本的第一行。實際上可以找到更詳細的解釋，可以找到here。