static KVOObservableForProperty()
{
var monotouchAssemblyName = typeof(NSObject).Assembly.FullName;
declaredInNSObject = new MemoizingMRUCache <Tuple <Type, string>, bool>(
(pair, _) =>
{
var thisType = pair.Item1;
// Types that aren't NSObjects at all are uninteresting to us
if (typeof(NSObject).IsAssignableFrom(thisType) == false)
{
return(false);
}
while (thisType != null)
{
if (thisType.GetMembers(BindingFlags.Public | BindingFlags.Instance | BindingFlags.DeclaredOnly).Any(x => x.Name == pair.Item2))
{
// NB: This is a not-completely correct way to detect if
// an object is defined in an Obj-C class (it will fail if
// you're using a binding to a 3rd-party Obj-C library).
return(thisType.Assembly.FullName == monotouchAssemblyName);
}
thisType = thisType.BaseType;
}
// The property doesn't exist at all
return(false);
}, RxApp.BigCacheLimit);
}
public DefaultLogManager(IDependencyResolver dependencyResolver = null)
{
dependencyResolver = dependencyResolver ?? RxApp.DependencyResolver;
loggerCache = new MemoizingMRUCache <Type, IFullLogger>((type, _) => {
var ret = dependencyResolver.GetService <ILogger>() ?? defaultLogger;
if (ret == null)
{
return(new WrappingFullLogger(defaultLogger, type));
}
return(new WrappingFullLogger(ret, type));
}, RxApp.BigCacheLimit);
}
public DefaultLogManager(IDependencyResolver dependencyResolver = null)
{
dependencyResolver = dependencyResolver ?? RxApp.DependencyResolver;
loggerCache = new MemoizingMRUCache <Type, IFullLogger>((type, _) => {
var ret = dependencyResolver.GetService <ILogger>();
if (ret == null)
{
throw new Exception("Couldn't find an ILogger. This should never happen, your dependency resolver is probably broken.");
}
return(new WrappingFullLogger(ret, type));
}, RxApp.BigCacheLimit);
}
/// <summary>
/// Constructs an ObservableAsyncMRUCache object.
/// </summary>
/// <param name="calculationFunc">The function that performs the
/// expensive or asyncronous calculation and returns an async result -
/// for CPU-based operations, Observable.Return may be used to return
/// the result.
///
/// Note that this function *must* return an equivalently-same result given a
/// specific input - because the function is being memoized, if the
/// calculationFunc depends on other varables other than the input
/// value, the results will be unpredictable.
/// </param>
/// <param name="maxSize">The number of items to cache. When this limit
/// is reached, not recently used items will be discarded.</param>
/// <param name="maxConcurrent">The maximum number of concurrent
/// asynchronous operations regardless of key - this is important for
/// web-based caches to limit the number of concurrent requests to a
/// server. The default is 5.</param>
/// <param name="onRelease">This optional method is called when an item
/// is evicted from the cache - this can be used to clean up / manage an
/// on-disk cache; the calculationFunc can download a file and save it
/// to a temporary folder, and the onRelease action will delete the
/// file.</param>
/// <param name="sched">The scheduler to run asynchronous operations on
/// - defaults to TaskpoolScheduler</param>
public ObservableAsyncMRUCache(
Func <TParam, IObservable <TVal> > calculationFunc,
int maxSize,
int maxConcurrent = 5,
Action <TVal> onRelease = null,
IScheduler sched = null)
{
sched = sched ?? RxApp.TaskpoolScheduler;
_callQueue = new SemaphoreSubject <int>(maxConcurrent, sched);
_fetcher = calculationFunc;
Action <IObservable <TVal> > release = null;
if (onRelease != null)
{
release = new Action <IObservable <TVal> >(x => onRelease(x.First()));
}
_innerCache = new MemoizingMRUCache <TParam, IObservable <TVal> >((x, val) => {
var ret = (IObservable <TVal>)val;
return(ret);
}, maxSize, release);
}