From dd05837c7aa5314a553235f46d13c88df8e448a9 Mon Sep 17 00:00:00 2001
From: Erik Kundiman <erik@megapahit.org>
Date: Mon, 9 Jun 2025 22:37:39 +0800
Subject: Fix usleep implementation for Windows

https://stackoverflow.com/questions/5801813/c-usleep-is-obsolete-workarounds-for-windows-mingw
---
 indra/newview/llappviewer.cpp | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index d91d2d3f4c..94e8fabcb2 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -1545,11 +1545,7 @@ bool LLAppViewer::doFrame()
             if(fpsLimitSleepFor)
             {
 #if LL_WINDOWS
-                U64 time1 = 0, time2 = 0;
-                QueryPerformanceCounter((LARGE_INTEGER *)&time1);
-                do {
-                    QueryPerformanceCounter((LARGE_INTEGER *)&time2);
-                } while ((time2-time1) < fpsLimitSleepFor);
+                std::this_thread::sleep_for(std::chrono::microseconds(fpsLimitSleepFor));
 #else
                 usleep(fpsLimitSleepFor);
 #endif
-- 
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