gral_thread

demos/CMakeLists.txt

@@ -18,3 +18,7 @@ target_link_libraries(file_dialogs gral)
 
 add_executable(text text.c)
 target_link_libraries(text gral)
+
+add_executable(thread thread.cpp)
+target_link_libraries(thread gral)
+target_compile_features(thread PUBLIC cxx_std_11)

demos/thread.cpp

@@ -0,0 +1,11 @@
+#include <gral_thread.hpp>
+
+struct Foo {
+	void hello() {}
+};
+
+Foo foo;
+
+int main() {
+	auto thread = gral::Thread::create<Foo, &Foo::hello>(&foo);
+}

gral_thread.hpp

@@ -0,0 +1,71 @@
+#ifndef GRAL_THREAD_HPP
+#define GRAL_THREAD_HPP
+
+#ifdef GRAL_WINDOWS
+#include <Windows.h>
+#include <process.h>
+#else
+#include <pthread.h>
+#endif
+
+namespace gral {
+
+class Thread {
+	#ifdef GRAL_WINDOWS
+	HANDLE thread;
+	template <class C, void (C::*M)()> static unsigned WINAPI thread_function(LPVOID user_data) {
+		C *object = static_cast<C *>(user_data);
+		(object->*M)();
+		return 0;
+	}
+	Thread(unsigned (*function)(LPVOID), LPVOID user_data) {
+		thread = reinterpret_cast<HANDLE>(_beginthreadex(nullptr, 0, function, user_data, 0, nullptr));
+	}
+	#else
+	pthread_t thread;
+	template <class C, void (C::*M)()> static void *thread_function(void *user_data) {
+		C *object = static_cast<C *>(user_data);
+		(object->*M)();
+		return nullptr;
+	}
+	Thread(void *(*function)(void *), void *user_data) {
+		pthread_create(&thread, nullptr, function, user_data);
+	}
+	#endif
+public:
+	Thread(): thread(0) {}
+	Thread(Thread const &) = delete;
+	Thread(Thread &&thread): thread(thread.thread) {
+		this->thread = thread.thread;
+		thread.thread = 0;
+	}
+	~Thread() {
+		if (thread) {
+			#ifdef GRAL_WINDOWS
+			CloseHandle(thread);
+			#else
+			pthread_detach(thread);
+			#endif
+		}
+	}
+	Thread &operator =(Thread const &) = delete;
+	explicit operator bool() const {
+		return thread;
+	}
+	template <class C, void (C::*M)()> static Thread create(C *object) {
+		return Thread(&thread_function<C, M>, object);
+	}
+	void join() {
+		#ifdef GRAL_WINDOWS
+		WaitForSingleObject(thread, INFINITE);
+		CloseHandle(thread);
+		#else
+		pthread_join(thread, NULL);
+		#endif
+		thread = 0;
+	}
+};
+
+}
+
+#endif