public override int GetHashCode()
{
unchecked
{
return(CurrentCulture.GetHashCode() * CurrentUICulture.GetHashCode() * ManagedThreadId.GetHashCode()
* Priority.GetHashCode() * ThreadName.GetHashCode() * ThreadState.GetHashCode()
* IsBackground.GetHashCode() * IsThreadPoolThread.GetHashCode());
}
}
/// <summary>
/// Reduces application memory usage.
/// </summary>
/// <remarks>
/// When the app enters the background, receives a memory limit changing
/// event, or receives a memory usage increased event, it can
/// can optionally unload cached data or even its view content in
/// order to reduce memory usage and the chance of being suspended.
/// This must be called from multiple event handlers because an application may already
/// be in a high memory usage state when entering the background, or it
/// may be in a low memory usage state with no need to unload resources yet
/// and only enter a higher state later.
/// </remarks>
private void ReduceMemoryUsage()
{
var memUsage = MemoryManager.AppMemoryUsage;
var removeUi = false;
// If the app has caches or other memory it can free, it should do so now.
// << App can release memory here >>
// Additionally, if the application is currently
// in background mode and still has a view with content
// then the view can be released to save memory and
// can be recreated again later when leaving the background.
if (IsBackground && Window.Current != null && Window.Current.Content != null)
{
VisualTreeHelper.DisconnectChildrenRecursive(Window.Current.Content);
// Clear the view content. Note that views should rely on
// events like Page.Unloaded to further release resources.
// Release event handlers in views since references can
// prevent objects from being collected.
Window.Current.Content = null;
removeUi = true;
}
var shell = Window.Current?.Content as MainShell;
shell?.RootFrame.Navigate(typeof(BlankPage));
// Clear the page cache
if (shell?.RootFrame != null)
{
var cacheSize = shell.RootFrame.CacheSize;
shell.RootFrame.CacheSize = 0;
shell.RootFrame.CacheSize = cacheSize;
}
// Run the GC to collect released resources.
GC.Collect();
var diffMemUsage = (memUsage - MemoryManager.AppMemoryUsage);
TelemetryService.Current.TrackEvent("Memory Collection Completed", new Dictionary <string, string>()
{
{ "cleaned_memory", diffMemUsage + "kb" },
{ "is_background", IsBackground.ToString() },
{ "remove_ui", removeUi.ToString() },
});
}
/// <summary>
/// Create a list view item describing this HidEvent
/// </summary>
/// <returns></returns>
public ListViewItem ToListViewItem()
{
string usageText = "";
string inputReport = null;
foreach (ushort usage in Usages)
{
if (usageText != "")
{
//Add a separator
usageText += ", ";
}
//Try to get a name for that usage
string name = "";
if (Enum.IsDefined(typeof(Hid.UsagePage), UsagePage))
{
UsagePage usagePage = (UsagePage)UsagePage;
try
{
name = Enum.GetName(Utils.UsageType(usagePage), usage);
}
catch
{
}
}
if (name == null || name.Equals("") || Device.IsGamePad) //Gamepad buttons do not belong to Usage enumeration, they are just ordinal
{
name = usage.ToString("X2");
}
usageText += name;
}
// Get input report for generic HID events
if (IsGeneric)
{
inputReport = InputReportString();
}
//If we are a gamepad display axis and dpad values
if (Device != null && Device.IsGamePad)
{
//uint dpadUsageValue = GetUsageValue((ushort)Hid.UsagePage.GenericDesktopControls, (ushort)Hid.Usage.GenericDesktop.HatSwitch);
//usageText = dpadUsageValue.ToString("X") + " (dpad), " + usageText;
if (usageText != "")
{
//Add a separator
usageText += " (Buttons)";
}
if (usageText != "")
{
//Add a separator
usageText += ", ";
}
usageText += GetDirectionPadState().ToString();
//For each axis
foreach (KeyValuePair <HIDP_VALUE_CAPS, uint> entry in UsageValues)
{
if (entry.Key.IsRange)
{
continue;
}
//Get our usage type
Type usageType = Utils.UsageType((UsagePage)entry.Key.UsagePage);
if (usageType == null)
{
//Unknown usage type
//TODO: check why this is happening on Logitech rumble gamepad 2.
//Probably some of our axis are hiding in there.
continue;
}
//Get the name of our axis
string name = Enum.GetName(usageType, entry.Key.NotRange.Usage);
if (usageText != "")
{
//Add a separator
usageText += ", ";
}
usageText += entry.Value.ToString("X") + " (" + name + ")";
}
}
//Handle keyboard events
else if (IsKeyboard)
{
//Get the virtual key
System.Windows.Forms.Keys vKey = (Keys)RawInput.keyboard.VKey;
usageText = vKey.ToString() + " -";
//Get the key flag
if (IsButtonUp)
{
usageText += " UP";
}
else if (IsButtonDown)
{
usageText += " DOWN";
}
if (RawInput.keyboard.Flags.HasFlag(RawInputKeyFlags.RI_KEY_E0))
{
usageText += " E0";
}
if (RawInput.keyboard.Flags.HasFlag(RawInputKeyFlags.RI_KEY_E1))
{
usageText += " E1";
}
if (HasModifierShift)
{
usageText += " SHIFT";
}
if (HasModifierControl)
{
usageText += " CTRL";
}
if (HasModifierAlt)
{
usageText += " ALT";
}
if (HasModifierWindows)
{
usageText += " WIN";
}
//Put our scan code into our input report field
inputReport = "0x" + RawInput.keyboard.MakeCode.ToString("X4");
}
//Now create our list item
ListViewItem item = new ListViewItem(new[] { usageText, inputReport, UsagePageNameAndValue(), UsageCollectionNameAndValue(), RepeatCount.ToString(), Time.ToString("HH:mm:ss:fff"), IsBackground.ToString() });
return(item);
}
