Source code of Windows XP (NT5)
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//-----------------------------------------------------------------------
//
// TDBX.H - TDBX data structure definition
//
//-----------------------------------------------------------------------
// File Description:
// Provides a definition of the TDBX data structure which is a
// non-pageable data structure used for storage of thread specific
// data which must be accessed from ring 0 at event or thread switch
// time.
//
//-----------------------------------------------------------------------
// Revision History:
// 5/21/93 - created (miketout)
//
//-----------------------------------------------------------------------
/* XLATOFF */#pragma pack(1)
/* XLATON */
#define MEOW_BOP_STACK_SIZE (48*1024)
#define MEOW_BOP_STACK_FILL 0x5A
typedef struct WNLST { struct _wnod *wnlst_pwnCirc; // 1 node in circular wait node list
DWORD wnlst_flFlags; // wait flags for any or all, etc.
} WNLST;
typedef struct TDBX {#ifdef WOW
BYTE tdbxType; BYTE tdbxUnused; WORD tdbxCntUses; // Ref count
#else // WOW
DWORD tdbxCntUses; // Ref count
#endif // else WOW
WNLST tdbxWaitNodeList; // wait node list
DWORD tdbxR0ThreadHandle; // ring 0 thread handle
DWORD tdbxContextHandle; // ring 0 memory context handle
DWORD tdbxProcessHandle; // ring 3 process handle
#ifdef WOW
struct _tdb *tdbxThreadHandle; // ring 3 thread handle
#else // WOW
DWORD tdbxThreadHandle; // ring 3 thread handle
#endif // else WOW
DWORD tdbxMustCpltCount; // nested must-complete count
DWORD tdbxSuspendHandle; // suspend apc handle
DWORD tdbxSuspendCount; // nested suspend count
#ifdef WOW
LONG tdbxBlockState; // -1 = blkd, 0 = norm, 1 = wake pending
HANDLE tdbxBlockHandle; // handle to thread's private semaphore
#else // WOW
DWORD tdbxBlockState; // -1 = blkd, 0 = norm, 1 = wake pending
DWORD tdbxBlockHandle; // handle to thread's private semaphore
#endif // else WOW
DWORD tdbxWakeParam; // caller defined wakeup parameter
DWORD tdbxTimeOutHandle; // handle from Set_Global_Time_Out
DWORD tdbxCreateDestroyData; // create/destroy parameter
KERNELAPCREC tdbxkernelapcrec; // apc record for terminate and freeze
volatile DWORD tdbxBlockedOnID; // if the thread is blocked on id
DWORD tdbxpPMPSPSelector; // ptr to TCB_PMPSPSelector field in TCB
DWORD tdbxKernAPCList; // pointer to first kernel APC
#ifdef WOW
struct _userapcrec *tdbxUserAPCList; // pointer to first user APC in list
#else // WOW
DWORD tdbxUserAPCList; // pointer to first user APC in list
#endif // else WOW
DWORD tdbxQueuedSyncAPCs; // waiting till out of nested Wait()
DWORD tdbxSyncWaitCount; // nested Wait() count
volatile DWORD tdbxWaitExFlags; // bit mask used for alertable waits
DWORD tdbxTraceEventHandle; // trace out event handle
DWORD tdbxTraceCallBack; // trace out call back function
DWORD tdbxTraceRefData; // trace out reference data
WORD tdbxDosPDBSeg; // DOS PDB segment value for this thread
WORD tdbxK16Task; // actual sel for K16 TDB of this TDB
DWORD tdbxDR7; // debug registers
DWORD tdbxDR6; DWORD tdbxDR3; DWORD tdbxDR2; DWORD tdbxDR1; DWORD tdbxDR0;#ifdef SYSLEVELCHECK
LONG tdbxLvlCounts[SL_TOTAL]; // to keep track of CRST level
LPLCRST tdbxOwnedCrsts[SL_TOTAL]; // ptrs to crit sections owned
#endif
WORD tdbxTraceOutLastCS; // trace out last CS
WORD tdbxK16PDB; // selector for PDB
BYTE tdbxExceptionCount; // number of nested exceptions
BYTE tdbxSavedIrql; // irql saved by VWIN32_SaveIrql
BYTE tdbxSavedIrqlCount; // INIT <-1>
#ifdef WOW
BYTE tdbxAlign; struct TDBX *tdbxNext; HANDLE tdbxNTThreadHandle; HANDLE tdbxVxDBlockOnIDEvent; DWORD tdbxVxDBlockOnIDID; WORD tdbxCurrentPSP; WORD tdbxAlign2; DWORD tdbxVxDMutexTry; DWORD tdbxVxDMutexGrant;#endif // def WOW
} TDBX;
typedef struct TDBX *PTDBX;
// bit numbers of flags in tdbxWaitExFlags
#define TDBX_WAITEXBIT 0 // wait includes APCs
#define TDBX_WAITEXBIT_MASK (1 << TDBX_WAITEXBIT)
#define TDBX_WAITACKBIT 1 // set once during wake
#define TDBX_WAITACKBIT_MASK (1 << TDBX_WAITACKBIT)
#define TDBX_SUSPEND_APC_PENDING 2 // kernel mode APC pending
#define TDBX_SUSPEND_APC_PENDING_MASK (1 << TDBX_SUSPEND_APC_PENDING)
#define TDBX_SUSPEND_TERMINATED 3 // thread has resumed
#define TDBX_SUSPEND_TERMINATED_MASK (1 << TDBX_SUSPEND_TERMINATED)
#define TDBX_BLOCKED_FOR_TERMINATION 4 // thread is blocked for term
#define TDBX_BLOCKED_FOR_TERMINATION_MASK (1 << TDBX_BLOCKED_FOR_TERMINATION)
#define TDBX_EMULATE_NPX 5 // thread is using FP emulator
#define TDBX_EMULATE_NPX_MASK (1 << TDBX_EMULATE_NPX)
#define TDBX_WIN32_NPX 6 // thread uses Win32 FP model
#define TDBX_WIN32_NPX_MASK (1 << TDBX_WIN32_NPX)
#define TDBX_EXTENDED_HANDLES 7 // uses extended file handles
#define TDBX_EXTENDED_HANDLES_MASK (1 << TDBX_EXTENDED_HANDLES)
#define TDBX_FROZEN 8 // thread is frozen
#define TDBX_FROZEN_MASK (1 << TDBX_FROZEN)
#define TDBX_DONT_FREEZE 9 // don't frozen the thread
#define TDBX_DONT_FREEZE_MASK (1 << TDBX_DONT_FREEZE)
#define TDBX_DONT_UNFREEZE 10 // keep the thread frozen
#define TDBX_DONT_UNFREEZE_MASK (1 << TDBX_DONT_UNFREEZE)
#define TDBX_DONT_TRACE 11 // don't trace the thread
#define TDBX_DONT_TRACE_MASK (1 << TDBX_DONT_TRACE)
#define TDBX_STOP_TRACING 12 // stop tracing the thread
#define TDBX_STOP_TRACING_MASK (1 << TDBX_STOP_TRACING)
#define TDBX_WAITING_FOR_CRST_SAFE 13 // waiting thread to get safe
#define TDBX_WAITING_FOR_CRST_SAFE_MASK (1 << TDBX_WAITING_FOR_CRST_SAFE)
#define TDBX_CRST_SAFE 14 // we know this thread is safe
#define TDBX_CRST_SAFE_MASK (1 << TDBX_CRST_SAFE)
#define TDBX_WTUSROWNMTX 15 // thread waited in user with VxD Mutex Owned
#define TDBX_WTUSROWNMTX_MASK (1 << TDBX_WTUSROWNMTX)
#define TDBX_THREAD_NOT_INIT 17 // thread init not complete
#define TDBX_THREAD_NOT_INIT_MASK (1 << TDBX_THREAD_NOT_INIT)
#define TDBX_BLOCK_TERMINATE_APC 18
#define TDBX_BLOCK_TERMINATE_APC_MASK (1 << TDBX_BLOCK_TERMINATE_APC)
#define TDBX_TERMINATING 19
#define TDBX_TERMINATING_MASK (1 << TDBX_TERMINATING)
// Special block ids (added to tdbx address)
#define TDBX_BLOCK_TERMINATE_APC_ID 0x00569595
#define TDBX_BLOCKED_FOR_TERMINATION_ID 0x00289816
// Equates for thread priority boosting by ring 3 code
#define HIGH_PRI_DEVICE_BOOST 0x00001000
#define LOW_PRI_DEVICE_BOOST 0x00000010
#define KERNEL_EXIT_PRI_BOOST 8
/* XLATOFF */#pragma pack()
/* XLATON */
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