Swoole을 사용하여 비동기 작업 스케줄링을 구현하는 방법

<?php
// 创建一个进程池
$pool = new SwooleProcessPool(4);

// 自定义任务处理逻辑
$pool->on('WorkerStart', function ($pool, $workerId) {
    // 建立消息队列
    $msgQueueKey = ftok(__FILE__, 'a');
    $msgQueue = msg_get_queue($msgQueueKey);

    // 循环处理任务
    while (true) {
        // 从消息队列中获取任务
        $data = null;
        $messageType = 0;
        if (msg_receive($msgQueue, 0, $messageType, 1024, $data, true, MSG_IPC_NOWAIT)) {
            // 执行任务
            $result = handleTask($data);
            // 将处理结果返回主进程
            msg_send($msgQueue, 1, $result);
        } else {
            // 没有任务，等待一段时间
            usleep(100);
        }
    }
});

// 启动进程池
$pool->start();

// 读取文件内容并进行任务拆分
$file = 'test.txt';
$content = file_get_contents($file);
$parts = preg_split('/[s,.!:?"'']/', $content);

// 将任务分发到进程池中
foreach ($parts as $part) {
    $pool->write($part);
}

// 等待所有任务执行完毕
$results = [];
for ($i = 0; $i < count($parts); $i++) {
    $result = null;
    $pool->read($result);
    $results[] = $result;
}

// 汇总任务执行结果
$wordCount = [];
foreach ($results as $result) {
    foreach ($result as $word => $count) {
        if (!isset($wordCount[$word])) {
            $wordCount[$word] = 0;
        }
        $wordCount[$word] += $count;
    }
}

// 获取出现次数最多的单词及其出现次数
arsort($wordCount);
$mostFrequentWord = key($wordCount);
$mostFrequentCount = current($wordCount);

echo "Most frequent word: $mostFrequentWord ($mostFrequentCount occurrences)
";

// 自定义任务处理函数
function handleTask($data)
{
    $wordCount = [];
    foreach (explode(' ', $data) as $word) {
        if (mb_strlen($word) > 0 && mb_strlen($word) <= 20) {
            if (!isset($wordCount[$word])) {
                $wordCount[$word] = 0;
            }
            $wordCount[$word]++;
        }
    }
    return $wordCount;
}