1 files changed, 96 insertions, 0 deletions
diff --git a/xmrstak/backend/plugin.hpp b/xmrstak/backend/plugin.hpp
new file mode 100644
index 0000000..9ba9716
--- /dev/null
+++ b/xmrstak/backend/plugin.hpp
@@ -0,0 +1,96 @@
+#pragma once
+#include <thread>
+#include <atomic>
+#include <vector>
+#include <string>
+#include "IBackend.hpp"
+#include <iostream>
+#include "../Environment.hpp"
+
+#ifndef USE_PRECOMPILED_HEADERS
+#ifdef WIN32
+#include <direct.h>
+#include <windows.h>
+#else
+#include <sys/types.h>
+#include <dlfcn.h>
+#endif
+#include <iostream>
+#endif
+
+namespace xmrstak
+{
+
+struct Plugin
+{
+
+	Plugin(const std::string backendName, const std::string libName) : fn_starterBackend(nullptr), m_backendName(backendName)
+	{
+#ifdef WIN32
+		libBackend = LoadLibrary(TEXT((libName + ".dll").c_str()));
+		if(!libBackend)
+		{
+			std::cerr << "WARNING: "<< m_backendName <<" cannot load backend library: " << (libName + ".dll") << std::endl;
+			return;
+		}
+#else
+		libBackend = dlopen((std::string("./lib") + libName + ".so").c_str(), RTLD_LAZY);
+		if(!libBackend)
+		{
+			std::cerr << "WARNING: "<< m_backendName <<" cannot load backend library: " << dlerror() << std::endl;
+			return;
+		}
+#endif
+
+#ifdef WIN32
+		fn_starterBackend = (starterBackend_t) GetProcAddress(libBackend, "xmrstak_start_backend");
+		if (!fn_starterBackend)
+		{
+			std::cerr << "WARNING: backend plugin " << libName << " contains no entry 'xmrstak_start_backend': " <<GetLastError()<< std::endl;
+		}
+#else
+		// reset last error
+		dlerror();
+		fn_starterBackend = (starterBackend_t) dlsym(libBackend, "xmrstak_start_backend");
+		const char* dlsym_error = dlerror();
+		if(dlsym_error)
+		{
+			std::cerr << "WARNING: backend plugin " << libName << " contains no entry 'xmrstak_start_backend': " << dlsym_error << std::endl;
+		}
+#endif
+	}
+
+	std::vector<IBackend*>* startBackend(uint32_t threadOffset, miner_work& pWork, Environment& env)
+	{
+		if(fn_starterBackend == nullptr)
+		{
+			std::vector<IBackend*>* pvThreads = new std::vector<IBackend*>();
+			std::cerr << "WARNING: " << m_backendName << " Backend disabled"<< std::endl;
+			return pvThreads;
+		}
+
+		return fn_starterBackend(threadOffset, pWork, env);
+	}
+
+	std::string m_backendName;
+
+	typedef std::vector<IBackend*>* (*starterBackend_t)(uint32_t threadOffset, miner_work& pWork, Environment& env);
+
+	starterBackend_t fn_starterBackend;
+
+#ifdef WIN32
+    HINSTANCE libBackend;
+#else
+    void *libBackend;
+#endif
+
+/* \todo add unload to destructor and change usage of Plugin that libs keeped open until the miner endss
+#ifdef WIN32
+    FreeLibrary(libBackend);
+#else
+    dlclose(libBackend);
+#endif
+ * */
+};
+
+} // namepsace xmrstak