public void Commit(ulong commitId, BrightstarProfiler profiler)
{
if (CanWrite)
{
foreach (var pageId in _modifiedPages.Keys)
{
var page = PageCache.Instance.Lookup(_partitionId, pageId) as BinaryFilePage;
if (page != null && page.IsDirty)
{
_backgroundPageWriter.QueueWrite(page, commitId);
}
}
_backgroundPageWriter.Flush();
lock (_restartLock)
{
_backgroundPageWriter.Shutdown();
_backgroundPageWriter.Dispose();
PageCache.Instance.Clear(_partitionId);
UpdatePartitionId();
_readTxnId = _writeTxnId;
_writeTxnId++;
_backgroundPageWriter =
new BackgroundPageWriter(_persistenceManager.GetOutputStream(_filePath, FileMode.Open));
}
}
else
{
throw new InvalidOperationException("Attempt to Commit on a read-only store instance");
}
}
public AppendOnlyFilePageStore(IPersistenceManager persistenceManager, string filePath, int pageSize, bool readOnly, bool disableBackgroundWrites)
{
_peristenceManager = persistenceManager;
_path = filePath;
if ((_pageSize % 4096) != 0)
{
throw new ArgumentException("Page size must be a multiple of 4096 bytes");
}
_pageSize = pageSize;
_bitShift = (int)Math.Log(_pageSize, 2.0);
if (!_peristenceManager.FileExists(filePath) && !readOnly)
{
// Create an empty file that we can write to later
_peristenceManager.CreateFile(filePath);
}
_stream = _peristenceManager.GetInputStream(_path);
_nextPageId = ((ulong)_stream.Length >> _bitShift) + 1;
if (!readOnly)
{
_newPages = new List <IPage>(512);
_newPageOffset = _nextPageId;
}
_pageSize = pageSize;
_readonly = readOnly;
if (!readOnly && !disableBackgroundWrites)
{
_backgroundPageWriter =
new BackgroundPageWriter(persistenceManager.GetOutputStream(filePath, FileMode.Open));
}
}
public AppendOnlyFilePageStore(IPersistenceManager persistenceManager, string filePath, int pageSize, bool readOnly, bool disableBackgroundWrites)
{
_peristenceManager = persistenceManager;
_path = filePath;
if ((_pageSize % 4096) != 0)
{
throw new ArgumentException("Page size must be a multiple of 4096 bytes");
}
_pageSize = pageSize;
_bitShift = (int)Math.Log(_pageSize, 2.0);
if (!_peristenceManager.FileExists(filePath) && !readOnly)
{
// Create an empty file that we can write to later
_peristenceManager.CreateFile(filePath);
}
_stream = _peristenceManager.GetInputStream(_path);
_nextPageId = ((ulong)_stream.Length >> _bitShift) + 1;
if (!readOnly)
{
_newPages = new List<IPage>(512);
_newPageOffset = _nextPageId;
}
_pageSize = pageSize;
_readonly = readOnly;
if (!readOnly && !disableBackgroundWrites)
{
_backgroundPageWriter =
new BackgroundPageWriter(persistenceManager.GetOutputStream(filePath, FileMode.Open));
}
}
private void RestartBackgroundWriter()
{
lock (this)
{
_backgroundPageWriter.Shutdown();
_backgroundPageWriter.Dispose();
_backgroundPageWriter =
new BackgroundPageWriter(_peristenceManager.GetOutputStream(_path, FileMode.Open));
}
}
private void RestartBackgroundWriter()
{
if (_backgroundPageWriter != null)
{
lock (this)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter =
new BackgroundPageWriter(_peristenceManager.GetOutputStream(_path, FileMode.Open), 1024);
}
}
}
/// <summary>
/// Close the store, releasing any resources (such as file handles) it may be using
/// </summary>
public void Close()
{
if (_stream != null)
{
_stream.Close();
}
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Shutdown();
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
public void Close()
{
if (_inputStream != null)
{
_inputStream.Close();
_inputStream.Dispose();
_inputStream = null;
}
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
private void Dispose(bool disposing)
{
if (!_disposed)
{
if (disposing)
{
Close();
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
_disposed = true;
}
}
/// <summary>
/// Close the store, releasing any resources (such as file handles) it may be using
/// </summary>
public void Close()
{
lock (this)
{
if (_stream != null)
{
_stream.Close();
_stream = null;
}
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
}
public BinaryFilePageStore(IPersistenceManager persistenceManager, string filePath, int pageSize, bool readOnly,
ulong transactionId, ulong nextTransactionId)
{
_persistenceManager = persistenceManager;
_nominalPageSize = pageSize;
_filePath = filePath;
_readTxnId = transactionId;
_writeTxnId = nextTransactionId;
PageSize = _nominalPageSize - 8;
CanWrite = !readOnly;
OpenInputStream();
_nextPageId = (ulong)_inputStream.Length / ((uint)_nominalPageSize * 2) + 1;
if (CanWrite)
{
_backgroundPageWriter =
new BackgroundPageWriter(_persistenceManager.GetOutputStream(_filePath, FileMode.Open));
PageCache.Instance.BeforeEvict += BeforePageCacheEvict;
}
_modifiedPages = new ConcurrentDictionary <ulong, bool>();
UpdatePartitionId();
}
private void RestartBackgroundWriter()
{
lock (this)
{
_backgroundPageWriter.Shutdown();
_backgroundPageWriter.Dispose();
_backgroundPageWriter =
new BackgroundPageWriter(_peristenceManager.GetOutputStream(_path, FileMode.Open));
}
}
public void Commit(ulong commitId, BrightstarProfiler profiler)
{
if (CanWrite)
{
foreach (var pageId in _modifiedPages.Keys)
{
var page = PageCache.Instance.Lookup(_partitionId, pageId) as BinaryFilePage;
if (page != null && page.IsDirty)
{
_backgroundPageWriter.QueueWrite(page, commitId);
}
}
_backgroundPageWriter.Flush();
lock (_restartLock)
{
_backgroundPageWriter.Shutdown();
_backgroundPageWriter.Dispose();
PageCache.Instance.Clear(_partitionId);
UpdatePartitionId();
_readTxnId = _writeTxnId;
_writeTxnId++;
_backgroundPageWriter =
new BackgroundPageWriter(_persistenceManager.GetOutputStream(_filePath, FileMode.Open));
}
}
else
{
throw new InvalidOperationException("Attempt to Commit on a read-only store instance");
}
}
private void RestartBackgroundWriter()
{
if (_backgroundPageWriter != null)
{
lock (this)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter =
new BackgroundPageWriter(_peristenceManager.GetOutputStream(_path, FileMode.Open), 1024);
}
}
}
private void Dispose(bool disposing)
{
if (!_disposed)
{
if (disposing)
{
Close();
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
_disposed = true;
}
}
/// <summary>
/// Close the store, releasing any resources (such as file handles) it may be using
/// </summary>
public void Close()
{
lock (this)
{
if (_stream != null)
{
_stream.Close();
_stream = null;
}
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
}
public BinaryFilePageStore(IPersistenceManager persistenceManager, string filePath, int pageSize, bool readOnly,
ulong transactionId, ulong nextTransactionId)
{
_persistenceManager = persistenceManager;
_nominalPageSize = pageSize;
_filePath = filePath;
_readTxnId = transactionId;
_writeTxnId = nextTransactionId;
PageSize = _nominalPageSize - 8;
CanWrite = !readOnly;
OpenInputStream();
_nextPageId = (ulong) _inputStream.Length/((uint) _nominalPageSize*2) + 1;
if (CanWrite)
{
_backgroundPageWriter =
new BackgroundPageWriter(_persistenceManager.GetOutputStream(_filePath, FileMode.Open));
PageCache.Instance.BeforeEvict += BeforePageCacheEvict;
}
_modifiedPages = new ConcurrentDictionary<ulong, bool>();
UpdatePartitionId();
}
public void Close()
{
if (_inputStream != null)
{
_inputStream.Close();
_inputStream.Dispose();
_inputStream = null;
}
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
/// <summary>
/// Close the store, releasing any resources (such as file handles) it may be using
/// </summary>
public void Close()
{
if (_stream != null)
{
_stream.Close();
}
if (_backgroundPageWriter != null)
{
_backgroundPageWriter.Shutdown();
_backgroundPageWriter.Dispose();
_backgroundPageWriter = null;
}
}
