first commit

composer.json

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+{
+    "name": "bit/taskman_lock",
+    "description": "taskman gamectl lock utils",
+    "homepage": "https://git.bit5.ru/composer/taskman_lock",
+    "require": {
+        "php": ">=7.4"
+    },
+    "autoload": {
+        "classmap": ["lock.inc.php"]
+    }
+}

lock.inc.php

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+<?php
+namespace taskman;
+
+function gamectl_check_lock()
+{
+  global $GAME_ROOT;
+
+  if(getenv("GAMECTL_IN_LOCK"))
+    return;
+
+  //don't bother with windows
+  if(DIRECTORY_SEPARATOR != '/')
+    return;
+
+  $lock = $GAME_ROOT . '/gamectl.lock';
+
+  while(file_exists($lock))
+  {
+    echo "gamectl is locked. Waiting...\n";
+    $pid = file_get_contents($lock);
+    if(!trim(exec("lsof -p $pid")))
+    {
+      echo "Seems gamectl process is gone but lock still exists, proceeding..\n";
+      break;
+    }
+
+    sleep(1);
+  }
+
+  register_shutdown_function('taskman\\gamectl_unlock');
+
+  putenv("GAMECTL_IN_LOCK=1");
+
+  file_put_contents($lock, getmypid());
+}
+
+function gamectl_unlock()
+{
+  global $GAME_ROOT;
+
+  $lock = $GAME_ROOT . '/gamectl.lock';
+  if(file_exists($lock))
+    unlink($lock);
+}