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  • 如何用windbg分析内存泄露

    1.     必须在命令行中设置为要分析的进程打开用户堆栈信息:C:Program FilesDebugging Tools for Windows (x64)>gflags.exe -i YourDebugProcess.exe +ust
    2.     必须是Debug版本的进程
    3.     设置好windbg的pdb路径,即symbol path
    4.     利用windbg的AttachToProcess (貌似后面这个方案不行:在目标机器上产生转储文件(dump)然后用windbg分析)。
    5.     利用!heap命令

     
    示例:
    0:032> !heap -s
    NtGlobalFlag enables following debugging aids for new heaps:
        stack back traces
    LFH Key                   : 0x00000052389f3a7e
    Termination on corruption : ENABLED
              Heap     Flags   Reserv  Commit  Virt   Free  List   UCR  Virt  Lock  Fast
                                (k)     (k)    (k)     (k) length      blocks cont. heap
    -------------------------------------------------------------------------------------
    0000000001b40000 08000002    1024    828   1024     19    20     1    0      0   LFH
    0000000000010000 08008000      64      8     64      5     1     1    0      0     
    0000000000020000 08008000      64     64     64     61     1     1    0      0     
    0000000001d30000 08001002    1088    308   1088     18     2     2    0      0   LFH
    00000000036b0000 08001002     512    288    512      7     9     1    0      0   LFH
    0000000001c60000 08001002  355456 338872 355456   7750   140    26    0      0   LFH
    0000000003e40000 08001002     512    260    512      7     2     1    0      0   LFH
    0000000003f80000 08001002      64      8     64      3     1     1    0      0     
    0000000004040000 08001002      64      8     64      3     1     1    0      0     
    00000000048c0000 08011002     512      8    512      3     2     1    0      0     
    00000000049e0000 08001002     512      8    512      3     2     1    0      0     
    0000000004850000 08001002    3136   2192   3136    403     6     3    0      0   LFH
        External fragmentation  18 % (6 free blocks)
    0000000006d30000 08001002    1088    288   1088      5     2     2    0      0   LFH
    00000000049a0000 08001002    1088    544   1088    265     4     2    0      0   LFH
    00000000048a0000 08001002    1088    288   1088      9     3     2    0      0   LFH
    00000000079d0000 08001002    1088    288   1088      9     3     2    0      0   LFH
    0000000007b30000 08001002    1088    288   1088      9     3     2    0      0   LFH
    0000000004c10000 08001002    1088    288   1088      9     3     2    0      0   LFH
    0000000008820000 08001002    1088    288   1088      9     3     2    0      0   LFH
    0000000008d80000 08001002    1088    288   1088     13     3     2    0      0   LFH
    0000000004c00000 08001002    1088    288   1088      9     3     2    0      0   LFH
    0000000006ce0000 08001002    1088    288   1088      9     3     2    0      0   LFH
    0000000004940000 08001002    1088    288   1088      9     3     2    0      0   LFH
    000000000a510000 08001002    1088    288   1088      9     3     2    0      0   LFH
    000000000a780000 08001002    1088    292   1088     12     4     2    0      0   LFH
    0000000008d70000 08001002    1088    256   1088      8     3     2    0      0   LFH
    000000000b1a0000 08001002     512      8    512      2     1     1    0      0     
    -------------------------------------------------------------------------------------
    0:032> !heap -stat -h 0000000001c60000
    heap @ 0000000001c60000
    group-by: TOTSIZE max-display: 20
        size     #blocks     total     ( %) (percent of total busy bytes)
        80034 261 - 13087bb4  (96.84)
        8c 3579 - 1d3e2c  (0.58)
        44 4a8a - 13cca8  (0.39)
        5c 35c9 - 13543c  (0.38)
        12c d0b - f48e4  (0.30)
        54 2a65 - de924  (0.28)
        4c 2c7f - d35b4  (0.26)
        6c e53 - 60b04  (0.12)
        1825c 3 - 48714  (0.09)
        8034 8 - 401a0  (0.08)
        2003e 2 - 4007c  (0.08)
        834 64 - 33450  (0.06)
        64 815 - 32834  (0.06)
        74 5a0 - 28c80  (0.05)
        4034 9 - 241d4  (0.04)
        84 273 - 1434c  (0.03)
        402c 4 - 100b0  (0.02)
        10034 1 - 10034  (0.02)
        1035 f - f31b  (0.02)
        94 185 - e0e4  (0.02)
    0:032> !heap -flt s 80034
        _HEAP @ 1b40000
        _HEAP @ 10000
        _HEAP @ 20000
        _HEAP @ 1d30000
        _HEAP @ 36b0000
        _HEAP @ 1c60000
                  HEAP_ENTRY Size Prev Flags            UserPtr UserSize - state
            00000000102e5a40 8006 0000  [00]   00000000102e5a70    80034 - (busy)
            0000000010365aa0 8006 8006  [00]   0000000010365ad0    80034 - (busy)
            0000000010402210 8006 8006  [00]   0000000010402240    80034 - (busy)
            0000000010482270 8006 8006  [00]   00000000104822a0    80034 - (busy)
            00000000105022d0 8006 8006  [00]   0000000010502300    80034 - (busy)
            00000000105e9630 8006 8006  [00]   00000000105e9660    80034 - (busy)

            ...............

            00000000250306d0 8006 8006  [00]   0000000025030700    80034 - (busy)
            00000000250b0730 8006 8006  [00]   00000000250b0760    80034 - (busy)
            0000000025130790 8006 8006  [00]   00000000251307c0    80034 - (busy)
            00000000251b07f0 8006 8006  [00]   00000000251b0820    80034 - (busy)
            0000000025230850 8006 8006  [00]   0000000025230880    80034 - (busy)
            00000000252b08b0 8006 8006  [00]   00000000252b08e0    80034 - (busy)
            0000000025330910 8006 8006  [00]   0000000025330940    80034 - (busy)
            00000000253b0970 8006 8006  [00]   00000000253b09a0    80034 - (busy)
            00000000254309d0 8006 8006  [00]   0000000025430a00    80034 - (busy)
            00000000254b0a30 8006 8006  [00]   00000000254b0a60    80034 - (busy)
            0000000025530a90 8006 8006  [00]   0000000025530ac0    80034 - (busy)
            00000000255b0af0 8006 8006  [00]   00000000255b0b20    80034 - (busy)
            0000000025630b50 8006 8006  [00]   0000000025630b80    80034 - (busy)
            00000000256b0bb0 8006 8006  [00]   00000000256b0be0    80034 - (busy)
            0000000025780070 8006 8006  [00]   00000000257800a0    80034 - (busy)
            00000000258000d0 8006 8006  [00]   0000000025800100    80034 - (busy)
        _HEAP @ 3e40000
        _HEAP @ 3f80000
        _HEAP @ 4040000
        _HEAP @ 48c0000
        _HEAP @ 49e0000
        _HEAP @ 4850000
        _HEAP @ 6d30000
        _HEAP @ 49a0000
        _HEAP @ 48a0000
        _HEAP @ 79d0000
        _HEAP @ 7b30000
        _HEAP @ 4c10000
        _HEAP @ 8820000
        _HEAP @ 8d80000
        _HEAP @ 4c00000
        _HEAP @ 6ce0000
        _HEAP @ 4940000
        _HEAP @ a510000
        _HEAP @ a780000
        _HEAP @ 8d70000
        _HEAP @ b1a0000
    0:032> !heap -p -a 0000000025030700   
        address 0000000025030700 found in
        _HEAP @ 1c60000
                  HEAP_ENTRY Size Prev Flags            UserPtr UserSize - state
            00000000250306d0 8006 0000  [00]   0000000025030700    80034 - (busy)
            76efcc0d ntdll! ?? ::FNODOBFM::`string'+0x000000000001913b
            fbaf4fd MSVCR100D!heap_alloc_base+0x000000000000005d
            fbc1efd MSVCR100D!nh_malloc_dbg+0x00000000000003bd
            fbc1c09 MSVCR100D!nh_malloc_dbg+0x00000000000000c9
            fbc1b89 MSVCR100D!nh_malloc_dbg+0x0000000000000049
            fbc617a MSVCR100D!malloc+0x000000000000002a
    *** WARNING: Unable to verify checksum for D:XXXXXXXXXXXXXXXXXXXXXXXXX.dll
            7febb5c37e1 XXXXXXXXX!XXXXXX::XXXXXXXXXXX::TransformPixelData+0x00000000000009a1
    X        7febb5dca4c XXXXXXXXXXXXXXXXX!XXXXXXXXX::LogicProcess::UpdatePixelDataByPSR+0x000000000000017c
            7febb5e07f5 XXXXXXXXXX!XXXXXXXXX::LogicProcess::RenderToOverlay+0x0000000000000055
            7febb5df0b2 XXXXXXXXXXXXXX!XXXXXXXXXXXX::LogicProcess::ExportBySpecifiedMode+0x00000000000005b2
            7feb800918f XXXXXXXXXXX!XXXXXXXXX::XXXXXXXXXXXXXXXXXX::ExportGSPSInfoBySpecifiedMode+0x0000000000000daf
            7feb808fb89 XXXXXXXXXX!XXXXXXX::XXXXXXXXXX::storeSCU+0x0000000000000c29
            7feb808e628 XXXXXXXXXXXX!XXXXXXXXXX::XXXXXXXXXX::DoRealStore+0x0000000000000438
            7feb80a763a XXXXXXXXXXXXX!boost::_bi::list0::operator()<void (__cdecl*)(void),boost::_bi::list0>+0x000000000000003a
            7feb80a75c1 XXXXXXXXXXXXX!boost::_bi::bind_t<void,void (__cdecl*)(void),boost::_bi::list0>::operator()+0x0000000000000061
            7feb80a753f XXXXXXXXXXXXXXXX!boost::detail::thread_data<boost::_bi::bind_t<void,void (__cdecl*)(void),boost::_bi::list0> >::run+0x000000000000002f
            7feb82ef7a7 XXXXXXXXXXXX!boost::`anonymous namespace'::thread_start_function+0x0000000000000037
            fab72e5 MSVCR100D!beginthreadex+0x00000000000002d5
            fab72a4 MSVCR100D!beginthreadex+0x0000000000000294
            76d5652d kernel32!BaseThreadInitThunk+0x000000000000000d
            76e8c521 ntdll!RtlUserThreadStart+0x000000000000001d


     
         
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  • 原文地址:https://www.cnblogs.com/muzizongheng/p/3524401.html
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