From 5788daa4106d721f662bd5afa6e406d29023acc2 Mon Sep 17 00:00:00 2001
From: Dennis Klein <d.klein@gsi.de>
Date: Mon, 6 Apr 2020 18:24:42 +0200
Subject: [PATCH] Plugin manager: extent lifetime of DLLs

---
 fairmq/PluginManager.cxx | 2 ++
 fairmq/PluginManager.h   | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/fairmq/PluginManager.cxx b/fairmq/PluginManager.cxx
index b1ffc0cf..39c817c1 100644
--- a/fairmq/PluginManager.cxx
+++ b/fairmq/PluginManager.cxx
@@ -28,6 +28,8 @@ using boost::optional;
 
 const std::string fair::mq::PluginManager::fgkLibPrefix = "FairMQPlugin_";
 
+std::vector<boost::dll::shared_library> fair::mq::PluginManager::fgDLLKeepAlive = std::vector<boost::dll::shared_library>();
+
 fair::mq::PluginManager::PluginManager()
     : fSearchPaths{}
     , fPluginFactories()
diff --git a/fairmq/PluginManager.h b/fairmq/PluginManager.h
index 085ac6b8..d6206f52 100644
--- a/fairmq/PluginManager.h
+++ b/fairmq/PluginManager.h
@@ -97,6 +97,7 @@ class PluginManager
         using fair::mq::tools::ToString;
 
         auto lib = shared_library{std::forward<Args>(args)...};
+        fgDLLKeepAlive.push_back(lib);
 
         fPluginFactories[pluginName] = import_alias<PluginFactory>(
             shared_library{lib},
@@ -117,6 +118,7 @@ class PluginManager
 
     static const std::string fgkLibPrefix;
     std::vector<boost::filesystem::path> fSearchPaths;
+    static std::vector<boost::dll::shared_library> fgDLLKeepAlive;
     std::map<std::string, std::function<PluginFactory>> fPluginFactories;
     std::unique_ptr<PluginServices> fPluginServices;
     std::map<std::string, std::unique_ptr<Plugin>> fPlugins;