| public WriteToSortedBlockTable ( Manifest manifest ) : void | ||
| manifest | Manifest | |
| return | void | |
#pragma warning restore 420
private void CheckForIncompleteJournalRotation(string baseFileName, int currentMemTableVersion)
{
int previousMemTableVersion = currentMemTableVersion - 1;
// Is there a left-over journal from a previous rotation that was aborted while in rotation.
if (File.Exists(Config.JournalFile(baseFileName, previousMemTableVersion)))
{
var memTable = new JournaledMemTable(baseFileName, previousMemTableVersion);
memTable.WriteToSortedBlockTable(_manifest);
memTable.Close();
}
}
#pragma warning disable 420
public void RotateMemTable()
{
lock (memTableRotationLock) {
// Double check the flag in case we have multiple threads that make it into this routine
if (_currentJournaledMemTable.Full)
{
_rotationSemaphore.WaitOne(); // Wait for the rotation gate to be open, and automatically reset once a single thread gets through.
_rotatedJournaledMemTable = Interlocked.Exchange <JournaledMemTable>(ref _currentJournaledMemTable, new JournaledMemTable(_manifest.BaseFileName, _manifest.NextVersion(0)));
ThreadPool.QueueUserWorkItem((o) => {
try {
_rotatedJournaledMemTable.WriteToSortedBlockTable(_manifest);
_rotatedJournaledMemTable = null;
} finally {
_rotationSemaphore.Release(); // Open the gate for the next rotation
}
});
}
}
}
#pragma warning restore 420
private void CheckForIncompleteJournalRotation(string baseFileName, int currentMemTableVersion) {
int previousMemTableVersion = currentMemTableVersion - 1;
// Is there a left-over journal from a previous rotation that was aborted while in rotation.
if (File.Exists(Config.JournalFile(baseFileName, previousMemTableVersion))) {
var memTable = new JournaledMemTable(baseFileName, previousMemTableVersion);
memTable.WriteToSortedBlockTable(_manifest);
memTable.Close();
}
}
#pragma warning disable 420
public void RotateMemTable() {
lock (memTableRotationLock) {
// Double check the flag in case we have multiple threads that make it into this routine
if (_currentJournaledMemTable.Full) {
_rotationSemaphore.WaitOne(); // Wait for the rotation gate to be open, and automatically reset once a single thread gets through.
_rotatedJournaledMemTable = Interlocked.Exchange<JournaledMemTable>(ref _currentJournaledMemTable, new JournaledMemTable(_manifest.BaseFileName, _manifest.NextVersion(0)));
ThreadPool.QueueUserWorkItem((o) => {
try {
_rotatedJournaledMemTable.WriteToSortedBlockTable(_manifest);
_rotatedJournaledMemTable = null;
} finally {
_rotationSemaphore.Release(); // Open the gate for the next rotation
}
});
}
}
}
