From e62fc51052dadb0690d9bb87d4b6c85d1bc2f086 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Mon, 4 Jul 2022 18:22:22 +0300
Subject: [PATCH] Reimplement async::future::ready without a wait

---
 libs/async/include/psemek/async/future.hpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/libs/async/include/psemek/async/future.hpp b/libs/async/include/psemek/async/future.hpp
index ecefbcea..7a281526 100644
--- a/libs/async/include/psemek/async/future.hpp
+++ b/libs/async/include/psemek/async/future.hpp
@@ -158,7 +158,9 @@ namespace psemek::async
 
 		bool ready() const
 		{
-			return wait_for(std::chrono::seconds{0});
+			if (!state_) throw empty_future_error{};
+			std::unique_lock lock(state_->value_mutex);
+			return has_value_unsafe();
 		}
 
 		template <typename F>