Add AwaitGroup!

Author: VennDev

src/vennv/vapm/AwaitGroup.php

@@ -0,0 +1,112 @@
+<?php
+
+/**
+ * Vapm - A library support for PHP about Async, Promise, Coroutine, Thread, GreenThread
+ *          and other non-blocking methods. The library also includes some Javascript packages
+ *          such as Express. The method is based on Fibers & Generator & Processes, requires
+ *          you to have php version from >= 8.1
+ *
+ * Copyright (C) 2023  VennDev
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+declare(strict_types=1);
+
+namespace vennv\vapm;
+
+use Generator;
+
+interface AwaitGroupInterface
+{
+
+    /**
+     * @param int $count
+     * @return void
+     *
+     * This function is used to add the count to the group
+     */
+    public function add(int $count): void;
+
+    /**
+     * @return Generator
+     *
+     * This function is used to decrement the count
+     */
+    public function done(): Generator;
+
+    /**
+     * @return bool
+     *
+     * This function is used to check if the count is zero
+     */
+    public function isDone(): bool;
+
+    /**
+     * @return int
+     *
+     * This function is used to get the count
+     */
+    public function getCount(): int;
+
+    /**
+     * @return void
+     *
+     * This function is used to wait for the count to be zero
+     */
+    public function reset(): void;
+
+}
+
+final class AwaitGroup implements AwaitGroupInterface
+{
+
+    private int $count = 0;
+
+    public function add(int $count): void
+    {
+        $this->count += $count;
+    }
+
+    public function done(): Generator
+    {
+        $this->count--;
+        yield;
+    }
+
+    public function isDone(): bool
+    {
+        return $this->count === 0;
+    }
+
+    public function getCount(): int
+    {
+        return $this->count;
+    }
+
+    public function reset(): void
+    {
+        $this->count = 0;
+    }
+
+    public function wait(): void
+    {
+        while ($this->count > 0) {
+            // Wait for the count to be zero
+        }
+    }
+
+    public function __destruct()
+    {
+        $this->reset();
+    }
+
+}