/// <nodoc />
public void UnsafeClear()
{
// Order is important here, inverse order could cause deadlock.
using (_flushMutex.AcquireSemaphore())
using (_exchangeLock.AcquireWriteLock())
{
if (_cache.Count != 0)
{
// Nothing guarantees that some number of updates couldn't have happened in between the last flush
// and this reset, because acquisition of the write lock happens after the flush lock. The only way
// to deal with this situation is to force a flush before this assignment and after locks have been
// acquired. However, this isn't required by our code right now; although it is a simple change.
_cache = new ConcurrentBigMap <ShortHash, ContentLocationEntry>();
}
}
}
public void Dispose()
{
using (m_queryJobDataLock.AcquireWriteLock())
{
// Prevent further data queries
m_disposeStarted = true;
}
if (m_processStarted)
{
InternalKill();
m_resultTaskCompletionSource.Task.Wait();
}
m_detouredProcess?.Dispose();
m_detouredProcess = null;
m_output?.Dispose();
m_output = null;
m_error?.Dispose();
m_error = null;
m_reports = null;
m_fileAccessManifestStreamWrapper.Dispose();
}
protected void TogglePauseChooseWorkerQueue(bool pause, RunnablePip blockedPip = null)
{
Contract.Requires(pause == (blockedPip != null), "Must specify blocked pip if and only if pausing the choose worker queue");
if (pause)
{
using (m_chooseWorkerTogglePauseLock.AcquireWriteLock())
{
// Compare with the captured sequence number before the pip re-entered the queue
// to avoid race conditions where pip cannot acquire worker resources become available then queue is paused
// potentially indefinitely (not likely but theoretically possilbe)
if (Volatile.Read(ref WorkerEnableSequenceNumber) == blockedPip.ChooseWorkerSequenceNumber)
{
SetQueueMaxParallelDegree(0);
}
}
}
else
{
using (m_chooseWorkerTogglePauseLock.AcquireReadLock())
{
// Update the sequence number. This essentially is called for every increase in resources
// and successful acquisition of workers to track changes in resource state that invalidate
// decision to pause choose worker queue.
Interlocked.Increment(ref WorkerEnableSequenceNumber);
// Unpause the queue
SetQueueMaxParallelDegree(MaxParallelDegree);
}
}
}
/// <summary>
/// Tries to kill the process and all child processes.
/// </summary>
/// <remarks>
/// It's okay to call this method at any time; however, before process start and after process termination or disposing of
/// this instance, it does nothing.
/// </remarks>
public void Kill(int exitCode)
{
// Notify the injected that the process is being killed
m_processInjector?.OnKilled();
var processHandle = m_processHandle;
if (processHandle != null && !processHandle.IsInvalid)
{
// Ignore result, as there is a race with regular process termination that we cannot do anything about.
m_killed = true;
// No job object means that we are on an old OS; let's just terminate this process (we can't reliably terminate all child processes)
Analysis.IgnoreResult(Native.Processes.ProcessUtilities.TerminateProcess(processHandle, exitCode));
}
using (m_queryJobDataLock.AcquireWriteLock())
{
JobObject jobObject = m_job;
if (jobObject != null)
{
// Ignore result, as there is a race with regular shutdown.
m_killed = true;
Analysis.IgnoreResult(jobObject.Terminate(exitCode));
}
}
}
/// <summary>
/// Add a mapping from <paramref name="machineId"/> to <paramref name="machineLocation"/>.
/// </summary>
public void AddMachine(MachineId machineId, MachineLocation machineLocation)
{
using (_lock.AcquireWriteLock())
{
while (machineId.Index >= _locationByIdMap.Length)
{
Array.Resize(ref _locationByIdMap, _locationByIdMap.Length * 2);
}
_locationByIdMap[machineId.Index] = machineLocation;
}
_idByLocationMap[machineLocation] = machineId;
}
private Result <ClusterStateInternal> Mutate(Func <ClusterStateInternal, Result <ClusterStateInternal> > mutation)
{
using var token = _lock.AcquireWriteLock();
var newClusterState = mutation(ClusterStateInternal.Value !);
if (!newClusterState.Succeeded)
{
return(newClusterState);
}
ClusterStateInternal = newClusterState;
return(ClusterStateInternal);
}
/// <summary>
/// Finishes up/cleans remaining RocksDB tasks and flushes DB to disk.
/// </summary>
public void Dispose()
{
using (m_rwl.AcquireWriteLock())
{
if (!m_disposed)
{
m_disposed = true;
if (m_invalidateStoreOnDispose)
{
InvalidateStore();
}
((RocksDbStore)m_store).Dispose();
}
}
}
/// <summary>
/// Finishes up/cleans remaining RocksDB tasks and flushes DB to disk.
/// </summary>
public void Dispose()
{
using (m_rwl.AcquireWriteLock())
{
if (!m_disposed)
{
m_disposed = true;
if (m_invalidateStoreOnDispose)
{
InvalidateStore();
}
if (m_store is IDisposable disposableStore)
{
disposableStore.Dispose();
}
}
}
}
