Question

我有一个像这样的方法调用序列：

//This is the Load method
BusinessLogic.Models.ProjectEngineer p = new BusinessLogic.Models.ProjectEngineer(project);
p.IsQualifiedFor(enType, educationEnum);
.
.
.


[UsesRule]
public static void IsQualifiedFor(this Models.ProjectEngineer p, EngineerTypeEnum enType, FieldEducationEnum fieldEducation)
{
    RuleCache.EvaluateRule(p, enType, fieldEducation);
}

.
.
.
public static bool EvaluateRule<TClass>(TClass sourceObj, params object[] parameters)
{
        var frame = new StackTrace().GetFrame(1);
        var methodInfo = frame.GetMethod();
        var atr = methodInfo.GetCustomAttribute<UsesRuleAttribute>();
        if (atr == null)
            throw new EISException("You can't call 'EvaluateRule' method in a method that does not have 'UsesRuleAttribute'.");
    ...
}

它在生产服务器上工作正常，直到今天我改变了一些无关紧要的东西。现在EvaluateRule方法抛出异常，因为它在调用者中找不到UsesRuleAttribute。这是异常的堆栈跟踪：

BusinessLogic.EISException: You can't call 'EvaluateRule' method in a method that does not have 'UsesRuleAttribute'.
   at BusinessLogic.Rule.RuleCache.EvaluateRule[TClass](TClass sourceObj, Object[] parameters) in e:\EIS\EISMvc\BusinessLogic\Rule\RuleCache.cs:line 146
   at EIS.Quota.Owner.EngineerList.Load() in e:\EIS\EISMvc\EIS\Quota\Owner\EngineerList.aspx.cs:line 66

正如您所见，此处缺少IsQualifiedFor方法调用（这是一种扩展方法）。我在我的机器上调试项目时工作正常。这是某种优化还是什么？

Answer 1

JIT（即时编译器）很可能是inlined，即在生成的本机代码中被其主体替换，因此它不会出现在堆栈中。

您可以使用MethodImpl属性阻止内联：

[UsesRule]
[MethodImpl(MethodImplOptions.NoInlining)]
public static void IsQualifiedFor(this Models.ProjectEngineer p, EngineerTypeEnum enType, FieldEducationEnum fieldEducation)

方法未在生产中的堆栈跟踪中显示

1 个答案: