perf: 增加原生缓存

vendor/illuminate/support/Timebox.php

@@ -0,0 +1,72 @@
+<?php
+
+namespace Illuminate\Support;
+
+class Timebox
+{
+    /**
+     * Indicates if the timebox is allowed to return early.
+     *
+     * @var bool
+     */
+    public $earlyReturn = false;
+
+    /**
+     * Invoke the given callback within the specified timebox minimum.
+     *
+     * @template TCallReturnType
+     *
+     * @param  (callable($this): TCallReturnType)  $callback
+     * @param  int  $microseconds
+     * @return TCallReturnType
+     */
+    public function call(callable $callback, int $microseconds)
+    {
+        $start = microtime(true);
+
+        $result = $callback($this);
+
+        $remainder = intval($microseconds - ((microtime(true) - $start) * 1000000));
+
+        if (! $this->earlyReturn && $remainder > 0) {
+            $this->usleep($remainder);
+        }
+
+        return $result;
+    }
+
+    /**
+     * Indicate that the timebox can return early.
+     *
+     * @return $this
+     */
+    public function returnEarly()
+    {
+        $this->earlyReturn = true;
+
+        return $this;
+    }
+
+    /**
+     * Indicate that the timebox cannot return early.
+     *
+     * @return $this
+     */
+    public function dontReturnEarly()
+    {
+        $this->earlyReturn = false;
+
+        return $this;
+    }
+
+    /**
+     * Sleep for the specified number of microseconds.
+     *
+     * @param  int  $microseconds
+     * @return void
+     */
+    protected function usleep(int $microseconds)
+    {
+        usleep($microseconds);
+    }
+}