/*************************************************************************/
/*  thread_windows.cpp                                                   */
/*************************************************************************/
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/*                           GODOT ENGINE                                */
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/* Copyright (c) 2007-2019 Juan Linietsky, Ariel Manzur.                 */
/* Copyright (c) 2014-2019 Godot Engine contributors (cf. AUTHORS.md)    */
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#include "thread_windows.h"

#if defined(WINDOWS_ENABLED) && !defined(UWP_ENABLED)

#include "os/memory.h"

Thread::ID ThreadWindows::get_id() const {

	return id;
}

Thread *ThreadWindows::create_thread_windows() {

	return memnew(ThreadWindows);
}

DWORD ThreadWindows::thread_callback(LPVOID userdata) {

	ThreadWindows *t = reinterpret_cast<ThreadWindows *>(userdata);

	ScriptServer::thread_enter(); //scripts may need to attach a stack

	t->id = (ID)GetCurrentThreadId(); // must implement
	t->callback(t->user);

	ScriptServer::thread_exit();

	return 0;
}

Thread *ThreadWindows::create_func_windows(ThreadCreateCallback p_callback, void *p_user, const Settings &) {

	ThreadWindows *tr = memnew(ThreadWindows);
	tr->callback = p_callback;
	tr->user = p_user;
	tr->handle = CreateThread(
			NULL, // default security attributes
			0, // use default stack size
			thread_callback, // thread function name
			tr, // argument to thread function
			0, // use default creation flags
			NULL); // returns the thread identifier

	return tr;
}
Thread::ID ThreadWindows::get_thread_id_func_windows() {

	return (ID)GetCurrentThreadId(); //must implement
}
void ThreadWindows::wait_to_finish_func_windows(Thread *p_thread) {

	ThreadWindows *tp = static_cast<ThreadWindows *>(p_thread);
	ERR_FAIL_COND(!tp);
	WaitForSingleObject(tp->handle, INFINITE);
	CloseHandle(tp->handle);
	//`memdelete(tp);
}

void ThreadWindows::make_default() {

	create_func = create_func_windows;
	get_thread_id_func = get_thread_id_func_windows;
	wait_to_finish_func = wait_to_finish_func_windows;
}

ThreadWindows::ThreadWindows() {

	handle = NULL;
}

ThreadWindows::~ThreadWindows() {
}

#endif