/// <summary>
/// Returns the hash code for this instance.
/// </summary>
/// <returns>A hash code for the <see cref="cef_v8value_t"/> object.</returns>
public override int GetHashCode()
{
if (IsValid() == 0)
return(0);
fixed(cef_v8value_t *self = &this)
{
RefCountedWrapperStruct *ws = RefCountedWrapperStruct.FromRefCounted(self);
V8ValueImplLayout * cppobj = ((V8ValueImplLayout *)(ws->cppObject));
switch (cppobj->Type)
{
case CefV8ValueType.Object:
V8ValueImplHandleLayout *v8ValueHandle = cppobj->handle;
if (v8ValueHandle == null)
{
return(0);
}
IntPtr *handle = v8ValueHandle->handle;
return((handle != null) ? (*handle).GetHashCode() : 0);
case CefV8ValueType.Bool:
return(cppobj->value.bool_value_ | (int)CefV8ValueType.Bool);
case CefV8ValueType.Double:
return(cppobj->value.double_value_.GetHashCode());
case CefV8ValueType.Int:
case CefV8ValueType.UInt:
return(cppobj->value.int_value_);
case CefV8ValueType.Null:
case CefV8ValueType.Undefined:
return((int)cppobj->Type);
case CefV8ValueType.String:
return(cppobj->value.string_value_.GetHashCode());
case CefV8ValueType.Date:
return(cppobj->value.date_value_.GetHashCode());
}
}
return(0);
}
#pragma warning disable CS1591
protected unsafe override void Dispose(bool disposing)
{
IntPtr key = Volatile.Read(ref _instance);
if (key != IntPtr.Zero)
{
GlobalSyncRoot.EnterWriteLock();
try
{
if (CefApi.UseUnsafeImplementation)
{
RefCountedWrapperStruct *ws = GetWrapperStructPtr((void *)key);
if (ws != null)
{
UnsafeRefCounted.Remove(ws->cppObject);
}
}
RefCounted.Remove(key);
}
finally
{
GlobalSyncRoot.ExitWriteLock();
}
#if NETFRAMEWORK
if (Environment.HasShutdownStarted)
{
if (CefStructure.IsAllocated(key)) // allow leaks to fix potential UAF
{
return;
}
}
else
#endif
if (CefStructure.Free(key))
{
return;
}
base.Dispose(disposing);
}
}
/// <summary>
/// Returns a wrapper for the specified pointer.
/// </summary>
/// <typeparam name="TClass">The type of wrapper.</typeparam>
/// <param name="create">Represents a method that create a new wrapper.</param>
/// <param name="instance">The pointer to ref-counted CEF struct.</param>
/// <returns>Returns an existing or new wrapper for the specified pointer.</returns>
public unsafe static TClass Wrap <TClass>(Func <IntPtr, TClass> create, T *instance)
where TClass : CefBaseRefCounted <T>
{
if (instance == null)
{
return(null);
}
RefCountedWrapperStruct *ws = null;
CefBaseRefCounted wrapper;
IntPtr key = new IntPtr(instance);
Internal.CefBaseRefCountedImpl.GlobalSyncRoot.EnterUpgradeableReadLock();
try
{
if (CefApi.UseUnsafeImplementation)
{
ws = GetWrapperStructPtr(instance);
if (ws != null && UnsafeRefCounted.TryGetValue(ws->cppObject, out WeakReference <CefBaseRefCounted> weakRef) &&
weakRef.TryGetTarget(out wrapper))
{
((cef_base_ref_counted_t *)instance)->Release();
return((TClass)wrapper);
}
}
if (RefCounted.TryGetValue(key, out RefCountedReference reference) &&
reference.Instance.TryGetTarget(out wrapper))
{
((cef_base_ref_counted_t *)instance)->Release();
return((TClass)wrapper);
}
#if DEBUG
else if (CefStructure.IsAllocated(key))
{
throw new InvalidCefObjectException(string.Format("Unexpected access to {0}.", typeof(TClass).Name));
}
#endif
else
{
Internal.CefBaseRefCountedImpl.GlobalSyncRoot.EnterWriteLock();
try
{
TClass typedWrapper = create(key);
var weakRef = new WeakReference <CefBaseRefCounted>(typedWrapper);
RefCounted[key] = new RefCountedReference(weakRef);
if (ws != null)
{
UnsafeRefCounted[ws->cppObject] = weakRef;
}
return(typedWrapper);
}
finally
{
Internal.CefBaseRefCountedImpl.GlobalSyncRoot.ExitWriteLock();
}
}
}
finally
{
Internal.CefBaseRefCountedImpl.GlobalSyncRoot.ExitUpgradeableReadLock();
}
}
