Winapi WCT WAITCHAIN\u节点\u信息联合验证

我正在使用C代码中的WCT Api（使用

pinvoke

），我有一个问题：

调用

GetThreadWaitChain

时，我得到WAITCHAIN\u NODE\u INFO数组的结果：

WAITCHAIN\u节点\u信息：

WAITCHAIN_NODE_INFO包含两个结构的并集-这意味着只有一个值是有效的，我如何知道从WAITCHAIN_NODE_INFO结构中获取哪些信息

目前我正在检查ProcessId和ThreadId是否为0，由此我假设另一半联合已初始化

这是我的C#WAITCHAIN_NODE_信息结构模型：

[StructLayout(LayoutKind.Sequential)]
public struct WAITCHAIN_NODE_INFO
{
    public WCT_OBJECT_TYPE ObjectType;
    public WCT_OBJECT_STATUS ObjectStatus;
    public _WAITCHAIN_NODE_INFO_UNION Union;
}


[StructLayout(LayoutKind.Explicit)]
public struct _WAITCHAIN_NODE_INFO_UNION
{
    [FieldOffset(0)]
    public _WAITCHAIN_NODE_INFO_LOCK_OBJECT LockObject;
    [FieldOffset(0)]
    public _WAITCHAIN_NODE_INFO_THREAD_OBJECT ThreadObject;
}

public unsafe struct _WAITCHAIN_NODE_INFO_LOCK_OBJECT
{
    /*The name of the object. Object names are only available for certain object, such as mutexes. If the object does not have a name, this member is an empty string.*/
    public fixed char ObjectName[WctApiConst.WCT_OBJNAME_LENGTH];
    /*This member is reserved for future use.*/
    public UInt64 Timeout;
    /*This member is reserved for future use.*/
    public UInt32 Alertable;
}

public struct _WAITCHAIN_NODE_INFO_THREAD_OBJECT
{
    /*The process identifier.*/
    public UInt32 ProcessId;
    /*The thread identifier. For COM and ALPC, this member can be 0.*/
    public UInt32 ThreadId;
    /*The wait time.*/
    public UInt32 WaitTime;
    /*The number of context switches.*/
    public UInt32 ContextSwitches;
}

有没有更好的方法来实现这一点

---

提前感谢

如果

ObjectType

是

WctThreadType

，那么您应该阅读union的

ThreadObject

部分。否则，您将读取union的

LockObject

部分

---

可以从MS提供的各种示例中收集到这种情况。例如：

我重新标记了这个。互操作其实并不重要。这是一个纯粹的winapi问题。