/// <summary>
/// Removes the value with the specified key.
/// </summary>
/// <param name="key">
/// The key of the element to remove.
/// </param>
/// <returns>
/// True if the element is successfully found and removed; otherwise, false.
/// This method returns false if key is not found.
/// </returns>
public bool Remove(TKey key)
{
bool flag;
using (WriteLock.Enter(readerWriterLock))
{
TValue local;
if (items.TryGetValue(key, out local))
{
items.Remove(key);
DisposeItem(key, local);
return(true);
}
flag = false;
}
return(flag);
}
/// <summary>
/// Gets or sets the value associated with the specified key.
/// </summary>
/// <param name="key">The key of the value to get or set.</param>
/// <returns>The value for the key.</returns>
public TValue this[TKey key]
{
get
{
TValue local;
using (ReadLock.Enter(readerWriterLock))
{
local = dictionary[key];
}
return(local);
}
set
{
using (WriteLock.Enter(readerWriterLock))
{
dictionary[key] = value;
}
}
}
/// <summary>
/// Adds a key/value pair to the <see cref="T:ExitGames.Threading.SynchronizedDictionary`2"/> if the key
/// does not already exist
/// </summary>
/// <param name="key">The key of the element to get or add.</param>
/// <param name="valueFactory">The function used to generate a value for the key</param>
/// <returns>The value for the key. This will be either the existing value for the key if the
/// key is already in the dictionary, or the new value for the key as returned by valueFactory
/// if the key was not in the dictionary.</returns>
public TValue GetOrAdd(TKey key, Func <TKey, TValue> valueFactory)
{
TValue local2;
using (UpgradeableReadLock.Enter(readerWriterLock))
{
TValue local;
if (dictionary.TryGetValue(key, out local))
{
local2 = local;
}
else
{
using (WriteLock.Enter(readerWriterLock))
{
local = valueFactory(key);
dictionary.Add(key, local);
local2 = local;
}
}
}
return(local2);
}
/// <summary>
/// Enters a critical write section. Exit the critical section by disposing the return value.
/// </summary>
/// <returns>A disposable write lock.</returns>
/// <exception cref="T:ExitGames.Threading.LockTimeoutException">
/// A write lock could not be obtained within the <see cref="P:ExitGames.Threading.SynchronizedSingletonFactory`2.LockTimeout"/>.
/// </exception>
protected IDisposable WriterLock()
{
return(WriteLock.TryEnter(this.readerWriterLockSlim, this.lockTimeout));
}
