private static void InstanceTests()
{
MethodBase[] methods =
{
typeof(InstanceClassA).GetMethod("A", BindingFlags.Instance | BindingFlags.Public),
typeof(InstanceClassA).GetMethod("B", BindingFlags.Instance | BindingFlags.Public),
typeof(InstanceClassB).GetMethod("A", BindingFlags.Instance | BindingFlags.Public),
typeof(InstanceClassB).GetMethod("B", BindingFlags.Instance | BindingFlags.Public)
};
// Jit TestStaticReplaceJited
RuntimeHelpers.PrepareMethod(
typeof(Program).GetMethod("TestInstanceReplaceJited", BindingFlags.Static | BindingFlags.NonPublic).MethodHandle);
// Replace StaticClassA.A() with StaticClassB.A()
Console.WriteLine("Replacing InstanceClassA.A() with InstanceClassB.A()");
MethodUtil.ReplaceMethod(methods[2], methods[0]);
// Call StaticClassA.A() from a method that has already been jited
Console.WriteLine("Call InstanceClassA.A() from a method that has already been jited");
TestInstanceReplaceJited();
// Call StaticClassA.A() from a method that has not been jited
Console.WriteLine("Call InstanceClassA.A() from a method that has not been jited");
TestInstanceReplace();
}
private void KillProfiler()
{
var keenStart = typeof(MySimpleProfiler).GetMethod("Begin");
var keenEnd = typeof(MySimpleProfiler).GetMethod("End");
var ourStart = typeof(Server).GetMethod("Begin");
var ourEnd = typeof(Server).GetMethod("End");
MethodUtil.ReplaceMethod(ourStart, keenStart);
MethodUtil.ReplaceMethod(ourEnd, keenEnd);
}
public static void Run()
{
// I think at a lower level this call uses the one below so may not be necessary
MethodBase checkMethod = typeof(GraphicsAdapter).GetMethod("IsProfileSupported", BindingFlags.Instance | BindingFlags.Public);
MethodBase replaceCheckMethod = typeof(GraphicsAdapterReplacement).GetMethod("IsProfileSupported", BindingFlags.Instance | BindingFlags.Public);
MethodUtil.ReplaceMethod(replaceCheckMethod, checkMethod);
// Disable the profile capabilities check
MethodBase profileMethod = typeof(GraphicsAdapter).GetMethod("IsProfileSupported", BindingFlags.Instance | BindingFlags.NonPublic);
MethodBase replaceProfileMethod = typeof(GraphicsAdapterReplacement).GetMethod("IsProfileSupported", BindingFlags.Instance | BindingFlags.NonPublic);
MethodUtil.ReplaceMethod(replaceProfileMethod, profileMethod);
}
public static void Init()
{
//ApplicationLog.BaseLog.Warn("Skipping profiler init");
//return;
var entType = typeof(MyEntities);
m_entitiesForUpdate = (MyDistributedUpdater <CachingList <MyEntity>, MyEntity>)entType.GetField("m_entitiesForUpdate", BindingFlags.NonPublic | BindingFlags.Static).GetValue(null);
m_entitiesForUpdate10 = (MyDistributedUpdater <CachingList <MyEntity>, MyEntity>)entType.GetField("m_entitiesForUpdate10", BindingFlags.NonPublic | BindingFlags.Static).GetValue(null);
m_entitiesForUpdate100 = (MyDistributedUpdater <CachingList <MyEntity>, MyEntity>)entType.GetField("m_entitiesForUpdate100", BindingFlags.NonPublic | BindingFlags.Static).GetValue(null);
m_creationThread = (MyEntityCreationThread)entType.GetField("m_creationThread", BindingFlags.NonPublic | BindingFlags.Static).GetValue(null);
var keenBefore = entType.GetMethod("UpdateBeforeSimulation");
var ourBefore = typeof(ProfilerInjection).GetMethod("UpdateBeforeSimulation");
var keenAfter = entType.GetMethod("UpdateAfterSimulation");
var ourAfter = typeof(ProfilerInjection).GetMethod("UpdateAfterSimulation");
//using (var md5 = MD5.Create())
//{
// var body = keenBefore.GetMethodBody().GetILAsByteArray();
// var hash = md5.ComputeHash(body);
// string compStr = Convert.ToBase64String(hash).ToUpper();
// if (compStr!= "YXXKWK+W+OHP+LNOGGM32A==" || body.Length != 238)
// {
// BaseLog.Warn("UpdateBeforeSimulation signature has changed! Cannot load profiler injector!");
// BaseLog.Error($"{compStr}:{body.Length}");
// return;
// }
// body = keenAfter.GetMethodBody().GetILAsByteArray();
// hash = md5.ComputeHash(body);
// compStr = Convert.ToBase64String(hash).ToUpper();
// if (compStr!= "7ZKFYWZRON9U3G43AV4QRA==" || body.Length != 220)
// {
// BaseLog.Warn("UpdateAfterSimulation signature has changed! Cannot load profiler injector!");
// BaseLog.Error($"{compStr}:{body.Length}");
// return;
// }
//}
BaseLog.Info("Replacing UpdateBeforeSimulation");
MethodUtil.ReplaceMethod(ourBefore, keenBefore);
BaseLog.Info("Replacing UpdateAfterSimulation");
MethodUtil.ReplaceMethod(ourAfter, keenAfter);
}
private static void DynamicTests()
{
// Create dynamic method C in StaticClassA
var dynamicMethod = CreateTestMethod(typeof(StaticClassA), "C");
// Get methodbase for class
MethodBase method = typeof(StaticClassA).GetMethod("B", BindingFlags.Static | BindingFlags.Public);
// Jit TestStaticReplaceJited
RuntimeHelpers.PrepareMethod(typeof(Program)
.GetMethod("TestDynamicReplaceJited", BindingFlags.Static | BindingFlags.NonPublic).MethodHandle);
// Replace StaticClassA.B() with dynamic StaticClassA.C()
Console.WriteLine("Replacing StaticClassA.B() with dynamic StaticClassA.C()");
MethodUtil.ReplaceMethod(dynamicMethod, method);
// Call StaticClassA.B() from a method that has already been jited
Console.WriteLine("Call StaticClassA.B() from a method that has already been jited");
TestDynamicReplaceJited();
// Call StaticClassA.B() from a method that has not been jited
Console.WriteLine("Call StaticClassA.B() from a method that has not been jited");
TestDynamicReplace();
}