private TypeDesc EmitSafeHandleMarshalling(TypeDesc type)
{
var safeHandleType = this.SafeHandleType;
var vAddRefed = _emitter.NewLocal(_context.GetWellKnownType(WellKnownType.Boolean));
var vSafeHandle = _emitter.NewLocal(type);
_marshallingCodeStream.EmitStLoc(vSafeHandle);
_marshallingCodeStream.EmitLdLoc(vSafeHandle);
_marshallingCodeStream.EmitLdLoca(vAddRefed);
_marshallingCodeStream.Emit(ILOpcode.call, _emitter.NewToken(
safeHandleType.GetKnownMethod("DangerousAddRef", null)));
_marshallingCodeStream.EmitLdLoc(vSafeHandle);
_marshallingCodeStream.Emit(ILOpcode.call, _emitter.NewToken(
safeHandleType.GetKnownMethod("DangerousGetHandle", null)));
// TODO: This should be inside finally block and only executed it the handle was addrefed
_unmarshallingCodestream.EmitLdLoc(vSafeHandle);
_unmarshallingCodestream.Emit(ILOpcode.call, _emitter.NewToken(
safeHandleType.GetKnownMethod("DangerousRelease", null)));
return(_context.GetWellKnownType(WellKnownType.IntPtr));
}
