我开始在我的应用程序中收到此异常。我进行了转储，这是线程池的样子：
0:014> !threadpool
CPU utilization: 81%
Worker Thread: Total: 1000 Running: 4 Idle: 996 MaxLimit: 1000 MinLimit: 1000
Work Request in Queue: 0
--------------------------------------
Number of Timers: 1
--------------------------------------
Completion Port Thread:Total: 32 Free: 31 MaxFree: 8 CurrentLimit: 32 MaxLimit: 1000 MinLimit: 1000
那些996个空闲线程具有类似的调用栈，如下所示：
ntdll!NtWaitForSingleObject+0x14
KERNELBASE!WaitForSingleObjectEx+0x8f
clr!CLRSemaphore::Wait+0x8a
clr!ThreadpoolMgr::UnfairSemaphore::Wait+0x115
clr!ThreadpoolMgr::WorkerThreadStart+0x28b
clr!Thread::intermediateThreadProc+0x86
kernel32!BaseThreadInitThunk+0x14
ntdll!RtlUserThreadStart+0x21
如果所有那些空闲线程都在等待工作，那为什么我会得到“ ThreadPool中没有足够的空闲线程来完成操作消息”的异常？