/// <summary>
/// Returns memory buffer to work with, be aware, this buffer is not thread safe
/// </summary>
/// <param name="requestedSize"></param>
/// <returns></returns>
public unsafe byte *GetNativeTempBuffer(int requestedSize)
{
if (_tempBuffer == null ||
_tempBuffer.Address == null ||
_tempBuffer.SizeInBytes < requestedSize)
{
if (_tempBuffer != null && _tempBuffer.Address != null)
{
_arenaAllocator.Return(_tempBuffer);
}
_tempBuffer = GetMemory(Math.Max(_tempBuffer?.SizeInBytes ?? 0, requestedSize));
}
return(_tempBuffer.Address);
}
protected internal virtual unsafe void Reset(bool forceReleaseLongLivedAllocator = false)
{
if (_tempBuffer != null && _tempBuffer.Address != null)
{
_arenaAllocator.Return(_tempBuffer);
_tempBuffer = null;
}
_documentBuilder.Reset();
// We don't reset _arenaAllocatorForLongLivedValues. It's used as a cache buffer for long lived strings like field names.
// When a context is re-used, the buffer containing those field names was not reset and the strings are still valid and alive.
var allocatorForLongLivedValues = _arenaAllocatorForLongLivedValues;
if (allocatorForLongLivedValues != null &&
(allocatorForLongLivedValues.Allocated > _initialSize || forceReleaseLongLivedAllocator))
{
foreach (var mem in _fieldNames.Values)
{
_arenaAllocatorForLongLivedValues.Return(mem.AllocatedMemoryData);
mem.AllocatedMemoryData = null;
mem.Dispose();
}
_arenaAllocatorForLongLivedValues = null;
// at this point, the long lived section is far too large, this is something that can happen
// if we have dynamic properties. A back of the envelope calculation gives us roughly 32K
// property names before this kicks in, which is a true abuse of the system. In this case,
// in order to avoid unlimited growth, we'll reset the long lived section
allocatorForLongLivedValues.Dispose();
_fieldNames.Clear();
CachedProperties = null; // need to release this so can be collected
}
_objectJsonParser.Reset(null);
_arenaAllocator.ResetArena();
_numberOfAllocatedStringsValues = 0;
_generation = _generation + 1;
}
public void ReturnMemory(AllocatedMemoryData allocation)
{
_arenaAllocator.Return(allocation);
}
