/// <summary>
/// try to rent some memory
/// </summary>
/// <param name="length">the length of memory</param>
/// <param name="rentedMemory">rented memory</param>
/// <returns>if false, rent operation is failed</returns>
public bool TryRent(int length, out RentedMemory rentedMemory)
{
if (indexer.TryLock(length, out var range))
{
rentedMemory = new RentedMemory(this, range, bytes[range]);
return(true);
}
rentedMemory = default;
return(false);
}
/// <summary>
/// try to rent some memory
/// </summary>
/// <param name="length">the length of memory</param>
/// <param name="rentedMemory">rented memory</param>
/// <returns>if false, rent operation is failed</returns>
public bool TryRent(int length, out RentedMemory rentedMemory)
{
if (length > BlockSize)
{
rentedMemory = default;
return(false);
}
rentableResetEvent.WaitOne();
Interlocked.Increment(ref rentingCount);
try
{
foreach (var rentableMemories in pool)
{
if (rentableMemories.TryRent(length, out rentedMemory))
{
return(true);
}
}
if (BlockCount < MaxBlockCount)
{
rentableResetEvent.Reset();
expansionRequiredResetEvent.Set();
}
rentedMemory = default;
return(false);
}
finally
{
Interlocked.Decrement(ref rentingCount);
}
}
/// <summary>
/// return rented memory
/// </summary>
/// <param name="rentedMemory">rented memory</param>
public void Return(RentedMemory rentedMemory)
{
indexer.Unlock(rentedMemory.RentedRange);
rentedMemory.Memory.Span.Fill(0);
}