/// <summary>
/// Starts a locking-block scope using the given <paramref cref="lockObject"/> parameter.
/// </summary>
/// <param name="lockObject">The object to do the locking on.</param>
/// <exception cref="NotSupportedException">Nested locks currently not supported.</exception>
public void BeginLock(FieldDefinition lockObject)
{
var body = _method.Body;
_method.Body.InitLocals = true;
_lockLocal = body.Variables.Count;
if (_tryBegin != null)
{
throw new NotSupportedException("nested locks currently not supported");
}
_tryBegin = _processor.CreateLdloc(_lockLocal);
body.Variables.Add(new VariableDefinition(_module.TypeSystem.Object));
_lockCheckLocal = body.Variables.Count;
var checkLocalVariable = new VariableDefinition(_module.TypeSystem.Boolean);
body.Variables.Add(checkLocalVariable);
_processor.Emit(OpCodes.Ldsfld, lockObject);
_processor.EmitStloc(_lockLocal);
_processor.Emit(OpCodes.Ldc_I4_0);
_processor.EmitStloc(_lockCheckLocal);
_processor.Append(_tryBegin);
_processor.Emit(OpCodes.Ldloca_S, checkLocalVariable);
MethodReference monitorEnter = _module.ImportReference(GetMonitorEnter(_module));
_processor.Emit(OpCodes.Call, monitorEnter);
}
private void CreateLibraryLoadSymbol(MethodDefinition m, string mangledName, ILProcessor processor)
{
int fnPtrLocalIndex = m.Body.Variables.Count;
m.Body.Variables.Add(new VariableDefinition(Module.TypeSystem.IntPtr));
var importLoaderAttribute = GetImportLoaderAttribute();
if (importLoaderAttribute.LoaderCookie == null)
{
processor.Emit(OpCodes.Ldnull);
}
else
{
processor.Emit(OpCodes.Ldstr, importLoaderAttribute.LoaderCookie);
}
processor.Emit(OpCodes.Call, Module.ImportReference(importLoaderAttribute.GetInstanceMethod));
processor.Emit(OpCodes.Call, CreateOrGetLibraryLoadLib(importLoaderAttribute));
var libLoaderGetProc = new MethodReference(nameof(ICustomLibraryLoader.GetProcAddress), Module.TypeSystem.IntPtr, Module.ImportReference(importLoaderAttribute.GetInstanceMethod.ReturnType));
libLoaderGetProc.HasThis = true;
libLoaderGetProc.Parameters.Add(new ParameterDefinition(Module.TypeSystem.IntPtr));
libLoaderGetProc.Parameters.Add(new ParameterDefinition(Module.TypeSystem.String));
processor.Emit(OpCodes.Ldstr, _mangledName);
processor.Emit(OpCodes.Callvirt, libLoaderGetProc);
processor.Emit(OpCodes.Dup);
processor.EmitStloc(fnPtrLocalIndex);
var reloadFnPtr = processor.CreateLdloc(fnPtrLocalIndex);
processor.Emit(OpCodes.Brtrue_S, reloadFnPtr);
//TODO: perhaps special error handling
processor.Append(reloadFnPtr);
processor.Emit(OpCodes.Stsfld, FunctionPointer);
}
private void AddLoadMethod(TypeDefinition type, FieldDefinition dataField)
{
MethodDefinition item = new MethodDefinition("Load", MethodAttributes.CompilerControlled | MethodAttributes.FamANDAssem | MethodAttributes.Family | MethodAttributes.HideBySig | MethodAttributes.Static, base.ModuleContext.IntPtrType);
type.Methods.Add(item);
MethodBody body = item.Body;
ILProcessor iLProcessor = body.GetILProcessor();
TypeReference corLibType = base.ModuleContext.GetCorLibType("System.Byte");
TypeReference variableType = base.ModuleContext.GetCorLibType("System.Int32");
TypeReference reference3 = base.ModuleContext.GetCorLibType("System.IntPtr");
TypeReference reference4 = base.ModuleContext.GetCorLibType("System.Runtime.InteropServices.Marshal");
TypeReference reference5 = base.ModuleContext.GetCorLibType("System.IO.Stream");
TypeReference reference6 = base.ModuleContext.GetCorLibType("System.Type");
VariableDefinition definition2 = new VariableDefinition("stream", reference5);
VariableDefinition definition3 = new VariableDefinition("length", variableType);
VariableDefinition definition4 = new VariableDefinition("buffer", new ArrayType(corLibType));
VariableDefinition definition5 = new VariableDefinition("result", reference3);
body.Variables.Add(definition2);
body.Variables.Add(definition3);
body.Variables.Add(definition4);
body.Variables.Add(definition5);
body.InitLocals = true;
iLProcessor.Emit(OpCodes.Ldtoken, type);
iLProcessor.Emit(OpCodes.Call, base.ModuleContext.GetCorLibMethod(reference6, "GetTypeFromHandle"));
if (base.OperationContext.IsWSA)
{
iLProcessor.Emit(OpCodes.Call, base.ModuleContext.GetCorLibMethod("System.Reflection.IntrospectionExtensions", "GetTypeInfo"));
iLProcessor.Emit(OpCodes.Callvirt, base.ModuleContext.GetCorLibMethod("System.Reflection.TypeInfo", "get_Assembly"));
}
else
{
iLProcessor.Emit(OpCodes.Callvirt, base.ModuleContext.GetCorLibMethod(reference6, "get_Assembly"));
}
iLProcessor.Emit(OpCodes.Ldstr, "UnityMetadata");
iLProcessor.Emit(OpCodes.Callvirt, base.ModuleContext.GetCorLibMethod("System.Reflection.Assembly", <> c.< > 9__2_0 ?? (< > c.< > 9__2_0 = new Func <MethodDefinition, bool>(< > c.< > 9. < AddLoadMethod > b__2_0))));
iLProcessor.EmitStloc(definition2);
iLProcessor.EmitLdloc(definition2);
iLProcessor.Emit(OpCodes.Callvirt, base.ModuleContext.GetCorLibMethod(reference5, "get_Length"));
iLProcessor.Emit(OpCodes.Conv_I4);
iLProcessor.EmitStloc(definition3);
iLProcessor.EmitLdloc(definition3);
iLProcessor.Emit(OpCodes.Newarr, corLibType);
iLProcessor.EmitStloc(definition4);
iLProcessor.EmitLdloc(definition2);
iLProcessor.EmitLdloc(definition4);
iLProcessor.EmitLdc_I4(0);
iLProcessor.EmitLdloc(definition3);
iLProcessor.Emit(OpCodes.Callvirt, base.ModuleContext.GetCorLibMethod(reference5, "Read"));
iLProcessor.Emit(OpCodes.Pop);
iLProcessor.EmitLdloc(definition2);
iLProcessor.Emit(OpCodes.Callvirt, base.ModuleContext.GetCorLibMethod(reference5, <> c.< > 9__2_1 ?? (< > c.< > 9__2_1 = new Func <MethodDefinition, bool>(< > c.< > 9. < AddLoadMethod > b__2_1))));
iLProcessor.EmitLdloc(definition3);
iLProcessor.Emit(OpCodes.Call, base.ModuleContext.GetCorLibMethod(reference4, "AllocCoTaskMem"));
iLProcessor.EmitStloc(definition5);
iLProcessor.EmitLdloc(definition4);
iLProcessor.EmitLdc_I4(0);
iLProcessor.EmitLdloc(definition5);
iLProcessor.EmitLdloc(definition3);
iLProcessor.Emit(OpCodes.Call, base.ModuleContext.GetCorLibMethod(reference4, <> c.< > 9__2_2 ?? (< > c.< > 9__2_2 = new Func <MethodDefinition, bool>(< > c.< > 9. < AddLoadMethod > b__2_2))));
foreach (AssemblyWrapper wrapper in base.MetadataContainer.Assemblies)
{
if (wrapper.GetUnityTypeMethod != null)
{
iLProcessor.EmitLdloc(definition5);
iLProcessor.EmitLdc_I4(wrapper.Offset);
iLProcessor.Emit(OpCodes.Add);
iLProcessor.Emit(OpCodes.Ldftn, base.ModuleContext.Import(wrapper.GetUnityTypeMethod));
iLProcessor.Emit(OpCodes.Stind_I);
}
}
iLProcessor.EmitLdloc(definition5);
iLProcessor.Emit(OpCodes.Stsfld, dataField);
iLProcessor.EmitLdloc(definition5);
iLProcessor.Emit(OpCodes.Ret);
}
public static void EmitBool(this ILProcessor il, bool value, VariableDefinition variable)
{
il.EmitBool(value);
il.EmitStloc(variable);
}
