我有一个应用程序,它对一组数字进行大量的数字运算。我将其设置为每100000次操作显示这些数字的状态。对于操作员来说,这只是一种视觉指示,表明应用程序仍在处理中,以及离完成还有多远。
在运行应用程序几个小时后,它会因OutOfMemoryException而崩溃。我在上面运行了CLRProfiler,发现泄漏发生在显示数组当前状态的文本框中。。。应用程序在Char[]中构建~4K,每次接口更新时,挂起内存的每个位的堆栈跟踪都是相同的。
这是WPF中的一个bug,还是我不知道应该做些什么来防止这种情况发生?我没有看到其他任何关于这个的参考资料。由于这是一个相当处理器密集型的操作,如果我不必仅仅显示数组的当前状态,我宁愿不必销毁和重建TextBox。
这是我能找到的唯一的内存泄漏,但是由于所需操作的数量太多,它实际上是应用程序的一个大问题,即使我只是简单地减少接口更新的频率。如果您需要更多信息,我会尽可能提供帮助,但请理解,由于此应用程序的功能,我几乎不能发布任何源代码,我将不得不匿名发布任何我可以发布的内容(删除任何应用程序用途的指示)。
<root> : 3.7 kB (100.00%)
WpfApplication0.App::Main static void (): 3.7 kB (100.00%)
System.Windows.Application::Run int32 (): 3.7 kB (100.00%)
System.Windows.Application::Run int32 (System.Windows.Window): 3.7 kB (100.00%)
System.Windows.Application::RunInternal int32 (System.Windows.Window): 3.7 kB (100.00%)
System.Windows.Application::RunDispatcher Object (Object): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::Run static void (): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::PushFrame static void (System.Windows.Threading.DispatcherFrame): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::PushFrameImpl void (System.Windows.Threading.DispatcherFrame): 3.7 kB (100.00%)
NATIVE FUNCTION ( UNKNOWN ARGUMENTS ): 3.7 kB (100.00%)
MS.Win32.HwndSubclass::SubclassWndProc int_ptr (int_ptr int32 int_ptr int_ptr): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::Invoke Object (System.Windows.Threading.DispatcherPriority Object): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::InvokeImpl Object (System.Windows.Threading.DispatcherPriority Object bool): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::WrappedInvoke Object ( Object bool ): 3.7 kB (100.00%)
System.Windows.Threading.ExceptionWrapper::TryCatchWhen Object (Object Object bool ): 3.7 kB (100.00%)
System.Windows.Threading.ExceptionWrapper::InternalRealCall Object ( Object bool): 3.7 kB (100.00%)
MS.Win32.HwndSubclass::DispatcherCallbackOperation Object (Object): 3.7 kB (100.00%)
MS.Win32.HwndWrapper::WndProc int_ptr (int_ptr int32 int_ptr int_ptr bool&): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::WndProcHook int_ptr (int_ptr int32 int_ptr int_ptr bool&): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::ProcessQueue void (): 3.7 kB (100.00%)
System.Windows.Threading.DispatcherOperation::Invoke Object (): 3.7 kB (100.00%)
System.Threading.ExecutionContext::Run static void (System.Threading.ExecutionContext System.Threading.ContextCallback Object): 3.7 kB (100.00%)
System.Threading.ExecutionContext::RunInternal static void (System.Threading.ExecutionContext System.Threading.ContextCallback Object): 3.7 kB (100.00%)
System.Threading.ExecutionContext::runTryCode static void (Object): 3.7 kB (100.00%)
System.Windows.Threading.DispatcherOperation::InvokeInSecurityContext static void (Object): 3.7 kB (100.00%)
System.Windows.Threading.DispatcherOperation::InvokeImpl void (): 3.7 kB (100.00%)
System.Windows.Threading.Dispatcher::WrappedInvoke(1) Object ( Object bool ): 3.7 kB (100.00%)
System.Windows.Threading.ExceptionWrapper::TryCatchWhen(1) Object (Object Object bool ): 3.7 kB (100.00%)
System.Windows.Threading.ExceptionWrapper::InternalRealCall(1) Object ( Object bool): 3.7 kB (100.00%)
System.Delegate::DynamicInvokeImpl Object (Object[]): 3.7 kB (100.00%)
System.Reflection.RuntimeMethodInfo::Invoke Object (Object System.Reflection.BindingFlags System.Reflection.Binder Object[] System.Globalization.CultureInfo bool): 3.7 kB (100.00%)
System.RuntimeMethodHandle::InvokeMethodFast Object (Object Object[] System.Signature System.Reflection.MethodAttributes System.RuntimeTypeHandle): 3.7 kB (100.00%)
WpfApplication0.Window1::UpdateUI void (): 3.7 kB (100.00%)
System.Windows.Controls.TextBox::set_Text void (String): 3.7 kB (100.00%)
System.Windows.DependencyObject::SetValue void (System.Windows.DependencyProperty Object): 3.7 kB (100.00%)
System.Windows.DependencyObject::SetValueCommon void (System.Windows.DependencyProperty Object System.Windows.PropertyMetadata bool System.Windows.OperationType bool): 3.7 kB (100.00%)
System.Windows.DependencyObject::UpdateEffectiveValue System.Windows.UpdateResult (System.Windows.EntryIndex System.Windows.DependencyProperty System.Windows.PropertyMetadata System.Windows.EffectiveValueEntry System.Windows.EffectiveValueEntry& bool System.Windows.OperationType): 3.7 kB (100.00%)
System.Windows.DependencyObject::NotifyPropertyChange void (System.Windows.DependencyPropertyChangedEventArgs): 3.7 kB (100.00%)
System.Windows.Controls.TextBox::OnPropertyChanged void (): 3.7 kB (100.00%)
System.Windows.FrameworkElement::OnPropertyChanged void (): 3.7 kB (100.00%)
System.Windows.DependencyObject::OnPropertyChanged void (System.Windows.DependencyPropertyChangedEventArgs): 3.7 kB (100.00%)
System.Windows.Controls.TextBox::OnTextPropertyChanged static void ( ): 3.7 kB (100.00%)
System.Windows.Documents.TextContainer::DeleteContentInternal void (System.Windows.Documents.TextPointer System.Windows.Documents.TextPointer): 3.7 kB (100.00%)
System.Windows.Documents.TextTreeUndo::CreateDeleteContentUndoUnit static System.Windows.Documents.TextTreeDeleteContentUndoUnit (System.Windows.Documents.TextContainer System.Windows.Documents.TextPointer System.Windows.Documents.TextPointer): 3.7 kB (100.00%)
System.Windows.Documents.TextTreeDeleteContentUndoUnit::.ctor void (System.Windows.Documents.TextContainer System.Windows.Documents.TextPointer System.Windows.Documents.TextPointer): 3.7 kB (100.00%)
System.Windows.Documents.TextTreeDeleteContentUndoUnit::CopyContent ContentContainer (System.Windows.Documents.TextTreeNode System.Windows.Documents.TextTreeNode): 3.7 kB (100.00%)
System.Windows.Documents.TextTreeDeleteContentUndoUnit::CopyTextNode System.Windows.Documents.TextTreeNode (System.Windows.Documents.TextTreeTextNode System.Windows.Documents.TextTreeNode ContentContainer&): 3.7 kB (100.00%)
System.Char [] : 3.7 kB (100.00%)
生成UI更新的代码是:
List<int> arraystatus = new List<int>(displayarray.ToArray());
StringBuilder s = new StringBuilder();
int i = 1;
foreach (int item in arraystatus)
{
s.Append(i.ToString() + ":\t" + item.ToString() + (i % 8 == 0 ? "\n" : "\t"));
i++;
}
txtStatus.Text = s.ToString();
arraystatus = null;
s = null;
