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The Domain field tells us which application domain the thread is running in We can use the DumpDomain command on the pointers to get extended information application domain information The LockCount field indicates whether the thread has taken a managed lock Finally, the APT field stands for Apartment and tells us which COM apartment mode the thread is in There are a couple of switches available to the Threads command More specifically, the live switch limits the output of the Threads command to only threads that are considered alive and active The special switch displays all the special threads of the process such as the garbage collection thread, debugger threads, threads pool timer threads, and so on
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The ClrStack command shows only the managed code call stack, whereas the k family of commands only shows the native call stack To dump the managed code and native code call stacks, the DumpStack command can be used To illustrate the output of the DumpStack command, we use the same debug session we investigated before (breaking into the debugger when 03simpleexe prompts for pressing any key) Listing 3-18 shows the output of the DumpStack command in abbreviated form Listing 3-18 Output of DumpStack command
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0:000> !DumpStack OS Thread Id: 0x10ac (0) Current frame: ntdll!KiFastSystemCallRet ChildEBP RetAddr Caller,Callee 0013f244 7c90dacc ntdll!NtRequestWaitReplyPort+0xc 0013f248 7c912dc8 ntdll!CsrClientCallServer+0x8c, calling ntdll!ZwRequestWaitReplyPort 0013f268 7c8743e8 KERNEL32!GetConsoleInput+0xdd, calling ntdll!CsrClientCallServer 0013f2dc 79e85194 mscorwks!Thread::HandleThreadAbort+0x9c, calling ntdll!RtlRestoreLastWin32Error 0013f2e0 79e85199 mscorwks!Thread::HandleThreadAbort+0xa1, calling mscorwks!_EH_epilog3 0013f300 79e7b7f3 mscorwks!Module::IsJumpTargetTableEntry+0x26, calling mscorwks!X86JumpTargetTable::ComputeSize 0013f314 79e84cf7 mscorwks!NDirectSlimStubWorker1+0xa9, calling mscorwks!RunML 0013f320 79e77d92 mscorwks!Thread::EnablePreemptiveGC+0xf, calling mscorwks!Thread::CatchAtSafePoint 0013f350 7c87450d KERNEL32!ReadConsoleInputA+0x1a, calling KERNEL32!GetConsoleInput
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Listing 3-18 Output of DumpStack command (continued)
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0013f370 0090a61c 0090a61c 0013fba4 7c91003d ntdll!RtlFreeHeap+0x647, calling ntdll!_SEH_epilog 0013fbd4 7c91003d ntdll!RtlFreeHeap+0x647, calling ntdll!_SEH_epilog 0013fbd8 7c911432 ntdll!RtlpFreeDebugInfo+0x5c, calling ntdll!RtlFreeHeap 0013fbdc 7c911463 ntdll!RtlpFreeDebugInfo+0x77, calling ntdll!RtlLeaveCriticalSection 0013fbe4 7c911440 ntdll!RtlpFreeDebugInfo+0x6a, calling ntdll!_SEH_epilog 0013fbfc 79e739ea mscorwks!UnsafeEELeaveCriticalSection+0x1d, calling (JitHelp: CORINFO_HELP_GET_THREAD) 0013fc04 79e739d7 mscorwks!UnsafeEELeaveCriticalSection+0xa, calling ntdll!RtlLeaveCriticalSection 0013fc08 79e739ea mscorwks!UnsafeEELeaveCriticalSection+0x1d, calling (JitHelp: CORINFO_HELP_GET_THREAD) 0013fc0c 79e739af mscorwks!CrstBase::Leave+0x77, calling mscorwks!UnsafeEELeaveCriticalSection 0013fc10 79e739cc mscorwks!CrstBase::Leave+0x96, calling mscorwks!_EH_epilog3 0013fc50 79e75877 mscorwks!EEHeapAlloc+0x12d, calling ntdll!RtlAllocateHeap 0013fc64 7c91003d ntdll!RtlFreeHeap+0x647, calling ntdll!_SEH_epilog 0013fc68 79e75923 mscorwks!EEHeapFree+0x83, calling ntdll!RtlFreeHeap 0013fc74 79e7593f mscorwks!EEHeapFree+0xa5, calling mscorwks!_EH_epilog3 0013fc88 79e75896 mscorwks!EEHeapAlloc+0x163, calling mscorwks!_EH_epilog3 0013fc8c 79e75848 mscorwks!EEHeapAllocInProcessHeap+0x51, calling mscorwks!EEHeapAlloc 0013fc9c 79e7593f mscorwks!EEHeapFree+0xa5, calling mscorwks!_EH_epilog3 0013fca0 79e758f6 mscorwks!EEHeapFreeInProcessHeap+0x21, calling mscorwks!EEHeapFree 0013fcb0 79e737aa mscorwks!SaveLastErrorHolder::~SaveLastErrorHolder+0x14, calling ntdll!RtlGetLastWin32Error 0013fcb8 79e758da mscorwks!operator delete[]+0x41, calling mscorwks!_EH_epilog3 0013fce0 79e758da mscorwks!operator delete[]+0x41, calling mscorwks!_EH_epilog3 0013fce4 79e7fe39 mscorwks!SArray<CORBBTPROF_TOKEN_LIST_ENTRY,1>::~SArray<CORBBTPROF_TOKEN_LIST_ENTRY, 1>+0x21, calling mscorwks!operator delete 0013fce8 79e7fdeb mscorwks!SArray<CORBBTPROF_TOKEN_LIST_ENTRY,1>::~SArray<CORBBTPROF_TOKEN_LIST_ENTRY, 1>+0x27, calling mscorwks!_EH_epilog3 0013fdb0 79e7b29b mscorwks!HardCodedMetaSig::GetBinarySig+0x146, calling mscorwks!_EH_epilog3 0013fdb4 79e7ce70 mscorwks!Binder::FetchMethod+0x5a, calling mscorwks!HardCodedMetaSig::GetBinarySig
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0013fdcc 79e7c4bb mscorwks!Binder::CheckInit+0xb, calling mscorwks!MethodTable::IsClassInited 0013fdd4 79e7ce07 mscorwks!Binder::GetMethod+0x63, calling mscorwks!Binder::CheckInit 0013fdd8 79e7ce1b mscorwks!Binder::GetMethod+0x79, calling mscorwks!_EH_epilog3 0013fddc 79ede7a0 mscorwks!EEPolicy::GetActionOnFailure+0x8f, calling mscorwks!_EH_epilog3 0013fe00 79e75a3a mscorwks!CLRException::HandlerState::CleanupTry+0x13, calling mscorwks!GetCurrentSEHRecord 0013fe10 79ed32ec mscorwks!EEStartupHelper+0x7d5, calling mscorwks!CLRException::HandlerState::CleanupTry 0013fe28 79ed3333 mscorwks!EEStartupHelper+0x904, calling mscorwks!__security_check_cookie 0013fe4c 79f11b6a mscorwks!REGUTIL::InitOptionalConfigCache+0x186, calling mscorwks!SString::CaseCompareHelper 0013feb8 7c9101bb ntdll!RtlAllocateHeap+0xeac, calling ntdll!_SEH_epilog 0013febc 79e75877 mscorwks!EEHeapAlloc+0x12d, calling ntdll!RtlAllocateHeap 0013feec 79ed3477 mscorwks!EEStartup+0x50, calling mscorwks!EEStartupHelper 0013fef0 79ed3496 mscorwks!EEStartup+0x75, calling mscorwks!_SEH_epilog4 0013ff18 79edae8b mscorwks!ExecuteEXE+0x59, calling mscorwks!SystemDomain::ExecuteMainMethod 0013ff68 79edadf3 mscorwks!_CorExeMain+0x11b, calling mscorwks!ExecuteEXE 0013ff74 7c911440 ntdll!RtlpFreeDebugInfo+0x6a, calling ntdll!_SEH_epilog 0013ffb0 79004044 mscoree!_CorExeMain+0x2c 0013ffc0 7c817067 KERNEL32!BaseProcessStart+0x23 0013ffc4 7c911440 ntdll!RtlpFreeDebugInfo+0x6a, calling ntdll!_SEH_epilog 0:000>
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As you can see, the output from DumpStack is quite elaborate but can be very valuable when an aggregate call stack view is required Using the EE switch to the DumpStack command results in only managed functions being displayed The net result is essentially the same as using the ClrStack command with the exception of displaying the method descriptor pointers It is also possible to specify a stack range that you want DumpStack to work on This can help reduce the amount of information that the command displays
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Sometimes, it is important to get the call stacks for all the managed threads in a process, and rather than using the Threads command followed by DumpStack for each and every thread in the Threads command output, the EEStack command can
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