From 14a425e487b63a3b49cade8b48e7e4c90b2567b9 Mon Sep 17 00:00:00 2001
From: Megamouse <studienricky89@googlemail.com>
Date: Tue, 7 Sep 2021 23:39:39 +0200
Subject: [PATCH] rsx: wait when emulation is paused

This decreases my cpu usage by to <1% during Emu.Pause()
---
 rpcs3/Emu/RSX/RSXThread.cpp | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/rpcs3/Emu/RSX/RSXThread.cpp b/rpcs3/Emu/RSX/RSXThread.cpp
index a2bce9f1ef..d20bb79af1 100644
--- a/rpcs3/Emu/RSX/RSXThread.cpp
+++ b/rpcs3/Emu/RSX/RSXThread.cpp
@@ -555,7 +555,7 @@ namespace rsx
 		on_exit();
 	}
 
-	void thread::cpu_wait(bs_t<cpu_flag>)
+	void thread::cpu_wait(bs_t<cpu_flag> old)
 	{
 		if (external_interrupt_lock)
 		{
@@ -563,7 +563,16 @@ namespace rsx
 		}
 
 		on_semaphore_acquire_wait();
-		std::this_thread::yield();
+
+		if ((state & (cpu_flag::dbg_global_pause + cpu_flag::exit)) == cpu_flag::dbg_global_pause)
+		{
+			// Wait 16ms during emulation pause. This reduces cpu load while still giving us the chance to render overlays.
+			thread_ctrl::wait_on(state, old, 16000);
+		}
+		else
+		{
+			std::this_thread::yield();
+		}
 	}
 
 	void thread::on_task()