从5.0.2版本开始，Process::signal收到不信号回调

[bobyang007]

Please answer these questions before submitting your issue.

1. What did you do? If possible, provide a simple script for reproducing the error.
   Process::signal(SIGTERM, function () {
   echo '收到退出信号';
   $this->pool->getProcess()->exit();
   });

2. What did you expect to see?
   从5.0.2版本开始，该注册收不到信号回调，切回5.0.1,或4版本均正常

3. What did you see instead?

4. What version of Swoole are you using (show your php --ri swoole)?

5. What is your machine environment used (show your uname -a & php -v & gcc -v) ?
   Swoole => enabled
   Author => Swoole Team [email protected]
   Version => 5.0.1
   Built => Jun 26 2023 16:56:00
   coroutine => enabled with boost asm context
   epoll => enabled
   eventfd => enabled
   signalfd => enabled
   cpu_affinity => enabled
   spinlock => enabled
   rwlock => enabled
   sockets => enabled
   openssl => OpenSSL 3.0.2 15 Mar 2022
   dtls => enabled
   http2 => enabled
   json => enabled
   curl-native => enabled
   c-ares => 1.18.1
   mutex_timedlock => enabled
   pthread_barrier => enabled
   futex => enabled
   mysqlnd => enabled
   async_redis => enabled
   coroutine_postgresql => enabled

Directive => Local Value => Master Value
swoole.enable_coroutine => On => On
swoole.enable_library => On => On
swoole.enable_preemptive_scheduler => Off => Off
swoole.display_errors => On => On
swoole.use_shortname => On => On
swoole.unixsock_buffer_size => 8388608 => 8388608

[NathanFreeman]

麻烦提供一下复现代码。

[bobyang007]

<?php

use Swoole\Process;
use Swoole\Coroutine;

echo 'Main Process kill -15 ' . posix_getpid() . "\n" . 'swoole version:' . swoole_version() . "\n";
$pool = new Process\Pool(5);
$pool->set(['enable_coroutine' => true]);
$pool->on('WorkerStart', function (Process\Pool $pool, $workerId) {
    /**
     * 当前是 Worker 进程
     */
    static $running = true;
    Process::signal(SIGTERM, function () use (&$running) {
        $running = false;
        echo "TERM\n";
    });
    echo "[Worker #{$workerId}] WorkerStart, pid: " . posix_getpid() . "\n";
    while ($running) {
        Coroutine::sleep(1);
        echo 'sleep 1';
    }
    echo "[Worker #{$workerId}] WorkerStart, pid: " . posix_getpid() . " over\n";
});
$pool->on('WorkerStop', function (\Swoole\Process\Pool $pool, $workerId) {
    echo "[Worker #{$workerId}] WorkerStop\n";
});
$pool->start();

[NathanFreeman]

我没法复现出来，在master分支，V5.0.1版本上，发送SIGTERM给主进程可以终止程序运行，发送SIGTERM给子进程，子进程可以退出并且被父进程重新拉起。

[bobyang007]

5.0.2及之后，是可以结束子进程
但是在些版本之前，使用Process::signal注册的信号回调，是会被执行的
5.0.2及之后，这个回调不会被执行，进程是直接被干死了，就实现不了优雅退出服务了

[bobyang007]

你看我上面发的图，5.0.1及之前的版本，收到15信号后，是会输出TERM,及进程循环退出时打印的输出
5.0.2及之后，是进程直接死了，没有退出信号输出，没有进程结束输出

[bobyang007]

5.0.2版本之后，这里的没有执行

[NathanFreeman]

我这里测试了可以执行，你是在linux环境下的测试的吗？

[bobyang007]

buntu 22.04
核对了下编译参数，开启了
--enable-thread-context
增强
就不能收到信号了

[NathanFreeman]

复现出来了，我看看是为啥

[NathanFreeman]

Fixed by #5081