//private static void ReconfigLazyInstance()
//{
// _instance = new Lazy<SocketAsyncEventArgsPool>(
// PoolFactory,
// false);
//}
public static SocketAsyncEventArgsPool GetInstance()
{
//lock (_criticalLock)
//{
// return _instance.Value;
//}
if (_instance == null)
{
lock (_criticalLock)
{
if (_instance == null)
{
_instance = PoolFactory();
}
}
}
return(_instance);
}
//private static void ReconfigLazyInstance()
//{
// _instance = new Lazy<SocketAsyncEventArgsPool>(
// PoolFactory,
// false);
//}
public static SocketAsyncEventArgsPool GetInstance()
{
//lock (_criticalLock)
//{
// return _instance.Value;
//}
if (_instance == null)
{
lock (_criticalLock)
{
if (_instance == null)
{
_instance = PoolFactory();
}
}
}
return _instance;
}
private static SocketAsyncEventArgsPool PoolFactory()
{
//Create buffer blocks.
//long acturalBufferSize = (long)_poolSize * (long)_bufferSize;
//var steps = acturalBufferSize / _bufferBlockStepSize;
//var mod = acturalBufferSize % _bufferBlockStepSize;
//if (mod > 0)
//{
// steps++;
//}
//int maxBufferBlockSize = _maxBuffersInBufferBlockCount * _bufferSize;
//long totalSize = (long)(steps * _bufferBlockStepSize);
//var fullBlockCount = (int)(totalSize / maxBufferBlockSize);
//var lastBlockSize = totalSize % maxBufferBlockSize;
//var buffers =
// Enumerable.Range(0, fullBlockCount)
// .Select(
// i => new byte[maxBufferBlockSize]
// )
// .ToList();
//if (lastBlockSize != 0) buffers.Add(new byte[(int)lastBlockSize]);
//Create reserved items in overlap pool.
//These overlap objects in SAES will be return to overlap pool for other io after SAE pool is built.
var reservedList = Enumerable.Range(0, _reservedOverlapCount)
.Select(
i =>
{
unsafe
{
NativeOverlapped* ptr = new Overlapped().Pack((x, y, z) => { }, null);
return new Action(() =>
{
Overlapped.Free(ptr);
});
}
}
)
.ToList();
//Create working SAEs
var query = Enumerable.Range(0, _poolSize)
.Select
(
i =>
{
var e = new SocketAsyncEventArgs();
//long totalOffset = i * (long)_bufferSize;
//var blockIndex = (int)(totalOffset / maxBufferBlockSize);
//var offset = (int)(totalOffset % maxBufferBlockSize);
e.SetBuffer(new byte[_bufferSize], 0, _bufferSize);
return e;
}
);
var itmsList = query.ToList();
//Create SAE pool instance
var rval = new SocketAsyncEventArgsPool(new ConcurrentBag<SocketAsyncEventArgs>(itmsList));
//Release the reserved overlap object.
//Best practice of overlap pool: the last released object will be visited first.
reservedList.Reverse();
reservedList.ForEach(
act =>
{
try
{
act();
}
catch (Exception)
{
}
}
);
reservedList.Clear();
//make sure all items in pool are in MaxGen of GC
for (int i = 0; i < GC.MaxGeneration; i++)
{
GC.Collect();
GC.WaitForFullGCComplete();
}
//Pin all buffer & SocketEventArgs to GC.
//GC will ignore them.
return rval;
}
private static SocketAsyncEventArgsPool PoolFactory()
{
//Create buffer blocks.
//long acturalBufferSize = (long)_poolSize * (long)_bufferSize;
//var steps = acturalBufferSize / _bufferBlockStepSize;
//var mod = acturalBufferSize % _bufferBlockStepSize;
//if (mod > 0)
//{
// steps++;
//}
//int maxBufferBlockSize = _maxBuffersInBufferBlockCount * _bufferSize;
//long totalSize = (long)(steps * _bufferBlockStepSize);
//var fullBlockCount = (int)(totalSize / maxBufferBlockSize);
//var lastBlockSize = totalSize % maxBufferBlockSize;
//var buffers =
// Enumerable.Range(0, fullBlockCount)
// .Select(
// i => new byte[maxBufferBlockSize]
// )
// .ToList();
//if (lastBlockSize != 0) buffers.Add(new byte[(int)lastBlockSize]);
//Create reserved items in overlap pool.
//These overlap objects in SAES will be return to overlap pool for other io after SAE pool is built.
var reservedList = Enumerable.Range(0, _reservedOverlapCount)
.Select(
i =>
{
unsafe
{
NativeOverlapped *ptr = new Overlapped().Pack((x, y, z) => { }, null);
return(new Action(() =>
{
Overlapped.Free(ptr);
}));
}
}
)
.ToList();
//Create working SAEs
var query = Enumerable.Range(0, _poolSize)
.Select
(
i =>
{
var e = new SocketAsyncEventArgs();
//long totalOffset = i * (long)_bufferSize;
//var blockIndex = (int)(totalOffset / maxBufferBlockSize);
//var offset = (int)(totalOffset % maxBufferBlockSize);
e.SetBuffer(new byte[_bufferSize], 0, _bufferSize);
return(e);
}
);
var itmsList = query.ToList();
//Create SAE pool instance
var rval = new SocketAsyncEventArgsPool(new ConcurrentBag <SocketAsyncEventArgs>(itmsList));
//Release the reserved overlap object.
//Best practice of overlap pool: the last released object will be visited first.
reservedList.Reverse();
reservedList.ForEach(
act =>
{
try
{
act();
}
catch (Exception)
{
}
}
);
reservedList.Clear();
//make sure all items in pool are in MaxGen of GC
for (int i = 0; i < GC.MaxGeneration; i++)
{
GC.Collect();
GC.WaitForFullGCComplete();
}
//Pin all buffer & SocketEventArgs to GC.
//GC will ignore them.
return(rval);
}
