first commit

vendor/laravel/framework/src/Illuminate/Process/InvokedProcessPool.php

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+<?php
+
+namespace Illuminate\Process;
+
+use Countable;
+
+class InvokedProcessPool implements Countable
+{
+    /**
+     * The array of invoked processes.
+     *
+     * @var array
+     */
+    protected $invokedProcesses;
+
+    /**
+     * Create a new invoked process pool.
+     *
+     * @param  array  $invokedProcesses
+     * @return void
+     */
+    public function __construct(array $invokedProcesses)
+    {
+        $this->invokedProcesses = $invokedProcesses;
+    }
+
+    /**
+     * Send a signal to each running process in the pool, returning the processes that were signalled.
+     *
+     * @param  int  $signal
+     * @return \Illuminate\Support\Collection
+     */
+    public function signal(int $signal)
+    {
+        return $this->running()->each->signal($signal);
+    }
+
+    /**
+     * Get the processes in the pool that are still currently running.
+     *
+     * @return \Illuminate\Support\Collection
+     */
+    public function running()
+    {
+        return collect($this->invokedProcesses)->filter->running()->values();
+    }
+
+    /**
+     * Wait for the processes to finish.
+     *
+     * @return \Illuminate\Process\ProcessPoolResults
+     */
+    public function wait()
+    {
+        return new ProcessPoolResults(collect($this->invokedProcesses)->map->wait()->all());
+    }
+
+    /**
+     * Get the total number of processes.
+     *
+     * @return int
+     */
+    public function count(): int
+    {
+        return count($this->invokedProcesses);
+    }
+}