完善FindDriver热更新 (#2193)

* 完善FindDriver热更新

* Update CHANGELOG-2.0.md

Co-authored-by: zhangzibin <zhangzibin@ecomxhat.com>
Co-authored-by: 李铭昕 <715557344@qq.com>

CHANGELOG-2.0.md

@@ -1,5 +1,9 @@
 # v2.0.5 - TBD
 
+## Optimized
+
+- [#2193](https://github.com/hyperf/hyperf/pull/2193) Optimized the scan accuracy for `Hyperf\Watcher\Driver\FindDriver`.
+
 # v2.0.4 - 2020-07-27
 
 ## Added

src/watcher/src/Driver/FindDriver.php

@@ -56,7 +56,7 @@ class FindDriver implements DriverInterface
             }
 
             $seconds = ceil(($ms + 1000) / 1000);
-            $minutes = sprintf('%.2f', $seconds / 60);
+            $minutes = sprintf('-%.2f', $seconds / 60);
 
             [$fileModifyTimes, $changedFiles] = $this->scan($fileModifyTimes, $minutes);
 
@@ -70,6 +70,10 @@ class FindDriver implements DriverInterface
     {
         $changedFiles = [];
         $dest = implode(' ', $targets);
+        /**
+         * In linux system, you can use command below
+         * find app -mmin -0.05 -type f -printf "%p %T+\n"
+         */
         $ret = System::exec($this->getBin() . ' ' . $dest . ' -mmin ' . $minutes . ' -type f -printf "%p %T+' . PHP_EOL . '"');
         if ($ret['code'] === 0 && strlen($ret['output'])) {
             $stdout = $ret['output'];