// Assumed that the caller releases the lock acquired here
internal BufferPage getWritablePage(int writeLength)
{
if (_pool == null)
{
_pool = new ConcurrentQueue <BufferPage>();
for (int i = 0; i < MaxBufferPages; i++)
{
var bufferPageBytes = new byte[Math.Max(defaultPageSize, writeLength)];
var bufferPage = new BufferPage(bufferPageBytes);
_pool.Enqueue(bufferPage);
}
}
LockOutputBuffer();
if (_bufferQ.IsEmpty())
{
// Q is empty, must add an empty page
addBufferPage(writeLength);
}
else
{
// There is something already in the buffer. Check it out.
var outPage = _bufferQ.PeekLast();
if ((outPage.PageBytes.Length - outPage.curLength) < writeLength)
{
// Not enough space on last page. Add another
addBufferPage(writeLength);
}
}
var retVal = _bufferQ.PeekLast();
return(retVal);
}
internal static EventBuffer Deserialize(Stream readFromStream)
{
var _retVal = new EventBuffer();
var bufferCount = readFromStream.ReadIntFixed();
for (int i = 0; i < bufferCount; i++)
{
var pageSize = readFromStream.ReadIntFixed();
var pageFilled = readFromStream.ReadIntFixed();
var myBytes = new byte[pageSize];
readFromStream.Read(myBytes, 0, pageFilled);
var newBufferPage = new BufferPage(myBytes);
newBufferPage.curLength = pageFilled;
newBufferPage.NumMessages = readFromStream.ReadIntFixed();
_retVal._bufferQ.Enqueue(ref newBufferPage);
}
return(_retVal);
}
