public override MemoryHandle Pin(int byteOffset = 0)
{
try {
lock (_syncObj) {
if (_isDisposed)
{
MemoryPoolThrowHelper.ThrowObjectDisposedException(MemoryPoolThrowHelper.ExceptionArgument.MemoryPoolBlock);
}
if (_pool.IsDisposed)
{
MemoryPoolThrowHelper.ThrowInvalidOperationException_BlockIsBackedByDisposedSlab(this);
}
if (byteOffset < 0 || byteOffset > _memory.Length)
{
MemoryPoolThrowHelper.ThrowArgumentOutOfRangeException(_memory.Length, byteOffset);
}
_pinCount++;
_memoryHandle = _memoryHandle ?? _memory.Pin();
unsafe {
return(new MemoryHandle(((IntPtr)_memoryHandle.Value.Pointer + byteOffset).ToPointer(), default, this));
public override IMemoryOwner <byte> Rent(int size = AnySize)
{
lock (_syncObj) {
if (IsDisposed)
{
MemoryPoolThrowHelper.ThrowObjectDisposedException(MemoryPoolThrowHelper.ExceptionArgument.MemoryPool);
}
var diagnosticPoolBlock = new DiagnosticPoolBlock(this, _pool.Rent(size));
if (_rentTracking)
{
diagnosticPoolBlock.Track();
}
_totalBlocks++;
_blocks.Add(diagnosticPoolBlock);
return(diagnosticPoolBlock);
}
}
/// <summary>
/// Called to take a block from the pool.
/// </summary>
/// <returns>The block that is reserved for the called. It must be passed to Return when it is no longer being used.</returns>
private MemoryPoolBlock Lease()
{
if (_isDisposed)
{
MemoryPoolThrowHelper.ThrowObjectDisposedException(MemoryPoolThrowHelper.ExceptionArgument.MemoryPool);
}
if (_blocks.TryDequeue(out MemoryPoolBlock block))
{
// block successfully taken from the stack - return it
block.Lease();
return(block);
}
// no blocks available - grow the pool
block = AllocateSlab();
block.Lease();
return(block);
}
public override Span <byte> GetSpan()
{
try {
lock (_syncObj) {
if (_isDisposed)
{
MemoryPoolThrowHelper.ThrowObjectDisposedException(MemoryPoolThrowHelper.ExceptionArgument.MemoryPoolBlock);
}
if (_pool.IsDisposed)
{
MemoryPoolThrowHelper.ThrowInvalidOperationException_BlockIsBackedByDisposedSlab(this);
}
return(_memory.Span);
}
} catch (Exception exception) {
_pool.ReportException(exception);
throw;
}
}