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当我在 WinDbg 中使用!htrace -diff调试句柄泄漏时，我得到了很多不显示调用堆栈的句柄（可能是正在泄漏的句柄）：

这可能是什么原因，我有哪些选项可以进一步调试？ 

Handle = 0x000273e4 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273e0 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273dc - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273d8 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273d4 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273d0 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273cc - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273c8 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273c4 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273c0 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273bc - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273b8 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273b4 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273b0 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273ac - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273a8 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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Handle = 0x000273a4 - OPEN
Thread ID = 0x00001190, Process ID = 0x0000114c

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更新：句柄泄漏似乎取决于图形驱动程序或图形卡。当我使用任何形式的 WPF 时，它就会开始泄漏，它只会在某些具有特定显卡/驱动程序的 Windows XP 系统上泄漏。

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1 回答 1

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调用是由 ZwOpenProcess 例程 (http://msdn.microsoft.com/en-us/library/windows/hardware/ff567022(v=vs.85).aspx) 在内核模式下执行的，而不是 ZwClose 调用。然后手柄泄漏。您看不到调用堆栈，因为它们仅在从用户模式（OpenProcess / CloseHandle）执行调用时可用。

在 XP SP3 上，似乎很难找到罪魁祸首。解决方案是使用操作系统中内置的“对象引用跟踪”功能，但这条路径存在问题（请参阅http://www.osronline.com/showthread.cfm?link=198302以获取更多参考）。由于您发现此问题仅在存在特定视频卡时出现，您可以尝试联系供应商或检查更新版本的驱动程序。

于 2011-10-21T21:26:15.237 回答