plugin manager example

Author: siddharthdeore

CMakeLists.txt

@@ -50,4 +50,4 @@ add_subdirectory(examples)
 
 add_executable(main main.cpp)
 target_link_libraries(main ${COMON_LIBS})
-target_link_directories(main PUBLIC ${CMAKE_BINARY_DIR}) 
+target_link_directories(main PUBLIC ${CMAKE_BINARY_DIR})

examples/PluginManager.h

@@ -0,0 +1,47 @@
+#ifndef TINY_PLUGIN_PLUGIN_MANAGER_H
+#define TINY_PLUGIN_PLUGIN_MANAGER_H
+
+#pragma once
+
+#include <tiny_plugin/SharedLibrary.h>
+#include <unordered_map>
+#include <mutex>
+
+class PluginManager
+{
+private:
+ std::unordered_map<std::string, std::shared_ptr<SharedLibrary>> plugins;
+ std::mutex mtx;
+
+public:
+ PluginManager()
+ {
+ }
+
+ void load_library(const std::string &name, const std::string &path = "")
+ {
+ std::lock_guard<std::mutex> lock(mtx);
+ plugins[name] = std::make_shared<SharedLibrary>(name, path);
+ }
+
+ template <typename T, typename... Args>
+ std::shared_ptr<T> create_instance_sptr(const std::string &name, Args... args)
+ {
+ std::lock_guard<std::mutex> lock(mtx);
+ if (plugins.find(name) == plugins.end())
+ {
+ std::cerr << "Plugin not found, load library before making instance!" <<std::endl;
+ return nullptr;
+ }
+ else
+ {
+ return plugins[name]->create_instance_sptr<T>(args...);
+ }
+ }
+
+ ~PluginManager()
+ {
+ }
+};
+
+#endif // TINY_PLUGIN_PLUGIN_MANAGER_H

main.cpp

@@ -1,16 +1,22 @@
 
 #include <memory>
 
-#include <tiny_plugin/SharedLibrary.h>
+#include "examples/PluginManager.h"
 
 int main()
 {
- SharedLibrary simple("SimplePlugin");
+ PluginManager manager;
 
- if (simple.is_loaded())
- {
- auto instance = simple.create_instance_sptr<void *>();
- }
+ manager.load_library("SimplePlugin");
+ manager.load_library("ComplexPlugin");
+
+ // simple shared library instance
+ auto instance_simple = manager.create_instance_sptr<void *>("SimplePlugin");
+
+ // shared library instance with arguments, make sure to pass valid arguments
+ auto x = std::make_shared<int>(123);
+ auto instance_complex = manager.create_instance_sptr<void *>("ComplexPlugin", x);
+ auto instance_simple2 = manager.create_instance_sptr<void *>("SimplePlugin2");
 
  return 0;
 }