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我们正在将视频从实现 IHttpAsyncHandler 的 ashx 流式传输到 Silverlight 客户端。

在客户端，异步处理程序正在 MediaStreamSource 的实现中使用。

它在最新的 Firefox、chrome 和 Internet Explorer 8 中运行良好。

但是在 Internet Explorer 9 中，我们看到了内存泄漏。我一直在使用 umdh 来调试内存，并找到了一个调用堆栈，它在内存转储之间使用了 127mb。所以我想我已经把它缩小到这个调用堆栈。

但现在我不知道现在继续我的调试。这是 umdh 信息：

首先是第一次和第二次的比较

+ 117440512 ( 134217712 - 16777200)      1 allocs   BackTrace121282BC
+       0 (      1 -      1)    BackTrace121282BC   allocations

ntdll!RtlAllocateHeap+00000274
npctrl!???+00000000 : 56FE1A65
npctrl!DllCanUnloadNow+000157F0
npctrl!???+00000000 : 56FF477E
npctrl!???+00000000 : 56FF48D5
urlmon!CBSCHolder::OnDataAvailable+0000003A
urlmon!CBinding::CallOnDataAvailable+0000002B
urlmon!CBinding::OnDataNotification+000000D7
urlmon!CBinding::OnTransNotification+000001DB
urlmon!CBinding::ReportData+00000085
urlmon!COInetProt::ReportData+0000006E
mscorie!CorFltr::ReportData+0000002B
urlmon!CTransaction::DispatchReport+0000037A
urlmon!CTransaction::OnINetCallback+000000DB
urlmon!TransactionWndProc+00000028
USER32!InternalCallWinProc+00000023
USER32!UserCallWinProcCheckWow+00000109
USER32!DispatchMessageWorker+000003BC
USER32!DispatchMessageW+0000000F
IEFRAME!CTabWindow::_TabWindowThreadProc+00000722
IEFRAME!LCIETab_ThreadProc+00000317
iertutil!CIsoScope::RegisterThread+000000AB
IEFRAME!Detour_DefWindowProcA+0000006C
kernel32!BaseThreadInitThunk+0000000E
ntdll!__RtlUserThreadStart+00000070
ntdll!_RtlUserThreadStart+0000001B

第二次运行调用栈

+ 7fffff0 ( 7fffff0 -     0)      1 allocs  BackTrace121282BC
+       1 (     1 -     0)  BackTrace121282BC   allocations

ntdll!RtlAllocateHeap+00000274
npctrl!???+00000000 : 56FE1A65
npctrl!DllCanUnloadNow+000157F0
npctrl!???+00000000 : 56FF477E
npctrl!???+00000000 : 56FF48D5
urlmon!CBSCHolder::OnDataAvailable+0000003A
urlmon!CBinding::CallOnDataAvailable+0000002B
urlmon!CBinding::OnDataNotification+000000D7
urlmon!CBinding::OnTransNotification+000001DB
urlmon!CBinding::ReportData+00000085
urlmon!COInetProt::ReportData+0000006E
mscorie!CorFltr::ReportData+0000002B
urlmon!CTransaction::DispatchReport+0000037A
urlmon!CTransaction::OnINetCallback+000000DB
urlmon!TransactionWndProc+00000028
USER32!InternalCallWinProc+00000023
USER32!UserCallWinProcCheckWow+00000109
USER32!DispatchMessageWorker+000003BC
USER32!DispatchMessageW+0000000F
IEFRAME!CTabWindow::_TabWindowThreadProc+00000722
IEFRAME!LCIETab_ThreadProc+00000317
iertutil!CIsoScope::RegisterThread+000000AB
IEFRAME!Detour_DefWindowProcA+0000006C
kernel32!BaseThreadInitThunk+0000000E
ntdll!__RtlUserThreadStart+00000070
ntdll!_RtlUserThreadStart+0000001B
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