改进exception范例代码

tutorial/test_async_exception.cpp

 //请打开结构化异常(/EHa)
 auto async_signal_exception(const intptr_t dividend)
 {
-	using namespace std::chrono;
-
-	resumef::awaitable_t<int64_t> awaitable;
+	awaitable_t<int64_t> awaitable;
 
 	std::thread([dividend, st = awaitable._state]
 	{
-		std::this_thread::sleep_for(50ms);
+		std::this_thread::sleep_for(std::chrono::milliseconds(50));
 		try
 		{
+			//也可以注释掉这个判断，使用结构化异常。但就获得不了具体描述信息了
 			if (dividend == 0)
 				throw std::logic_error("divided by zero");
 			st->set_value(10000 / dividend);
 	return awaitable;
 }
 
+auto async_signal_exception2(const intptr_t dividend)
+{
+	awaitable_t<int64_t> awaitable;
+
+	std::thread([dividend, st = awaitable._state]
+	{
+		std::this_thread::sleep_for(std::chrono::milliseconds(50));
+		if (dividend == 0)
+			st->throw_exception(std::logic_error("divided by zero"));
+		else
+			st->set_value(10000 / dividend);
+	}).detach();
+
+	return awaitable;
+}
+
 future_vt test_signal_exception()
 {
 	for (intptr_t i = 10; i >= 0; --i)
 	{
 		try
 		{
-			auto r = co_await async_signal_exception(i);
+			auto r = co_await async_signal_exception2(i);
 			std::cout << "result is " << r << std::endl;
 		}
 		catch (const std::exception& e)

vs_proj/librf.cpp

 
 int main(int argc, const char * argv[])
 {
-	resumable_main_benchmark_mem();
+	resumable_main_exception();
 	return 0;
 
 	resumable_main_yield_return();
 	resumable_main_routine();
 	resumable_main_resumable();
 	resumable_main_mutex();
-	resumable_main_exception();
 	resumable_main_event();
 	resumable_main_event_timeout();
 	resumable_main_dynamic_go();
 	resumable_main_channel();
 	resumable_main_cb();
+	resumable_main_exception();
 
 	return 0;
 }