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TTD Thread Objects

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Description

TTD Thread objects are used to give information about threads and their lifetime during a time travel trace.

Properties

Property Description
UniqueId A unique ID for the thread across the trace.
Id The TID of the thread.

Children

Object Description
LifeTime A TTD range object that describes the lifetime of the thread.
ActiveTime A TTD range object that describes the time the thread was active.

Example Usage

Use this dx command to display all of the threads in the array.

0:0:000> dx -g @$curprocess.TTD.Threads
=================================================================================================================
=                             = (+) UniqueId = (+) Id    = (+) Lifetime                 = (+) ActiveTime        =
=================================================================================================================
= [0x0] : UID: 2, TID: 0x2428 - 0x2          - 0x2428    - [0:0, 6F0C4:0]               - [50C63:0, 6F0C4:0]    =
= [0x1] : UID: 3, TID: 0x3520 - 0x3          - 0x3520    - [0:0, FFFFFFFFFFFFFFFE:0]    - [5115A:0, 56B07:0]    =
= [0x2] : UID: 4, TID: 0x18E8 - 0x4          - 0x18e8    - [0:0, FFFFFFFFFFFFFFFE:0]    - [52F65:0, 56B1E:0]    =
= [0x3] : UID: 5, TID: 0x5690 - 0x5          - 0x5690    - [0:0, FFFFFFFFFFFFFFFE:0]    - [5300D:0, 5D4FA:0]    =
= [0x4] : UID: 6, TID: 0x46FC - 0x6          - 0x46fc    - [0:0, FFFFFFFFFFFFFFFE:0]    - [53782:0, 5433B:0]    =
= [0x5] : UID: 7, TID: 0x58D0 - 0x7          - 0x58d0    - [0:0, FFFFFFFFFFFFFFFE:0]    - [542FE:0, 543B9:0]    =
= [0x6] : UID: 8, TID: 0x950  - 0x8          - 0x950     - [0:0, FFFFFFFFFFFFFFFE:0]    - [543C4:0, 544B8:0]    =
= [0x7] : UID: 9, TID: 0x4514 - 0x9          - 0x4514    - [0:0, 6D61B:0]               - [5DBBD:0, 6D61B:0]    =
=================================================================================================================

Use this dx command to display information about the first thread in the array.

0:0:000 dx -r2 @$curprocess.TTD.Threads[0]
@$curprocess.TTD.Threads[0]                 : UID: 2, TID: 0x2428
    UniqueId         : 0x2
    Id               : 0x2428
    Lifetime         : [0:0, 6F0C4:0]
        MinPosition      : Min Position [Time Travel]
        MaxPosition      : 6F0C4:0 [Time Travel]
    ActiveTime       : [50C63:0, 6F0C4:0]
        MinPosition      : 50C63:0 [Time Travel]
        MaxPosition      : 6F0C4:0 [Time Travel]

The [Time Travel] links provide a link to SeekTo() the specific postion in the trace when the thread was active.

0:0:000> dx @$curprocess.TTD.Threads[0].@"ActiveTime".@"MinPosition".SeekTo()
Setting position: 50C63:0
@$curprocess.TTD.Threads[0].@"ActiveTime".@"MinPosition".SeekTo()
(40b4.2428): Break instruction exception - code 80000003 (first/second chance not available)
Time Travel Position: 50C63:0
ntdll!NtTestAlert+0x14:
00007ffb`e3e289d4 c3              ret

See Also

Time Travel Debugging - Introduction to Time Travel Debugging objects

Time Travel Debugging - Overview