From b4415bccc91f54b8e76e1443e90cc4caa36a82fc Mon Sep 17 00:00:00 2001
From: momo5502 <mauriceheumann@gmail.com>
Date: Sat, 26 Oct 2024 13:18:52 +0200
Subject: [PATCH] Make query performance counter reproducible

---
 src/windows-emulator/syscalls.cpp | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/windows-emulator/syscalls.cpp b/src/windows-emulator/syscalls.cpp
index c8f948eb..a848be4b 100644
--- a/src/windows-emulator/syscalls.cpp
+++ b/src/windows-emulator/syscalls.cpp
@@ -11,7 +11,7 @@
 
 namespace
 {
-	NTSTATUS handle_NtQueryPerformanceCounter(const syscall_context&,
+	NTSTATUS handle_NtQueryPerformanceCounter(const syscall_context& c,
 	                                          const emulator_object<LARGE_INTEGER> performance_counter,
 	                                          const emulator_object<LARGE_INTEGER> performance_frequency)
 	{
@@ -19,9 +19,10 @@ namespace
 		{
 			if (performance_counter)
 			{
-				performance_counter.access([](LARGE_INTEGER& value)
+				performance_counter.access([&](LARGE_INTEGER& value)
 				{
-					QueryPerformanceCounter(&value);
+					value.QuadPart = static_cast<LONGLONG>(c.proc.executed_instructions);
+					//QueryPerformanceCounter(&value);
 				});
 			}
 
@@ -29,7 +30,8 @@ namespace
 			{
 				performance_frequency.access([](LARGE_INTEGER& value)
 				{
-					QueryPerformanceFrequency(&value);
+					value.QuadPart = 10000;
+					//QueryPerformanceFrequency(&value);
 				});
 			}