From 25f9c78961daae10b9084d78901d71bc56691aa1 Mon Sep 17 00:00:00 2001
From: youkaichao <youkaichao@gmail.com>
Date: Tue, 19 Nov 2024 02:43:21 -0800
Subject: [PATCH] [misc][plugin] improve plugin loading (#10443)

Signed-off-by: youkaichao <youkaichao@gmail.com>
---
 vllm/plugins/__init__.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/vllm/plugins/__init__.py b/vllm/plugins/__init__.py
index fdc848ce..05a9739d 100644
--- a/vllm/plugins/__init__.py
+++ b/vllm/plugins/__init__.py
@@ -9,12 +9,19 @@ if TYPE_CHECKING:
 
 logger = logging.getLogger(__name__)
 
+# make sure one process only loads plugins once
+plugins_loaded = False
+
 
 def load_general_plugins():
     """WARNING: plugins can be loaded for multiple times in different
     processes. They should be designed in a way that they can be loaded
     multiple times without causing issues.
     """
+    global plugins_loaded
+    if plugins_loaded:
+        return
+    plugins_loaded = True
     import sys
     if sys.version_info < (3, 10):
         from importlib_metadata import entry_points