public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (_isLowMemory.Raise())
{
Interlocked.Increment(ref _generation);
}
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
if (_isExtremelyLowMemory.Raise() == false)
{
return;
}
for (int i = 0; i < _items.Length; i++)
{
ClearStack(_globalStacks[i]);
foreach (var allocation in _items[i].EnumerateAndClear())
{
if (allocation.InUse.Raise())
{
allocation.Dispose();
}
}
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (_isLowMemory.Raise())
{
Interlocked.Increment(ref _generation);
}
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
if (_isExtremelyLowMemory.Raise() == false)
{
return;
}
foreach (var container in _items)
{
foreach (var allocation in container.EnumerateAndClear())
{
if (allocation.InUse.Raise())
{
allocation.Dispose();
}
}
}
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (_isLowMemory.Raise())
{
Interlocked.Increment(ref _generation);
}
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
if (_isExtremelyLowMemory.Raise() == false)
{
return;
}
foreach (var container in _items)
{
while (container.TryPull(out var allocation))
{
if (allocation.InUse.Raise() == false)
{
continue;
}
allocation.Dispose();
}
}
}
private void RunLowMemoryHandlers(bool isLowMemory, LowMemorySeverity lowMemorySeverity = LowMemorySeverity.ExtremelyLow)
{
try
{
foreach (var lowMemoryHandler in _lowMemoryHandlers)
{
if (lowMemoryHandler.TryGetTarget(out var handler))
{
try
{
if (isLowMemory)
{
handler.LowMemory(lowMemorySeverity);
}
else if (_wasLowMemory)
{
handler.LowMemoryOver();
}
}
catch (Exception e)
{
try
{
if (_logger.IsInfoEnabled)
{
_logger.Info("Failure to process low memory notification (low memory handler - " + handler + ")", e);
}
}
catch
{
// ignored
}
}
}
else
{
// make sure that we aren't allocating here, we reserve 128 items
// and worst case we'll get it in the next run
if (_inactiveHandlers.Count < _inactiveHandlers.Capacity)
{
_inactiveHandlers.Add(lowMemoryHandler);
}
}
}
foreach (var x in _inactiveHandlers)
{
if (x == null)
{
continue;
}
_lowMemoryHandlers.TryRemove(x);
}
}
finally
{
_wasLowMemory = isLowMemory;
_inactiveHandlers.Clear();
}
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
ReleaseUnmanagedResources();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
FreeSpace();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
InLowMemoryMode.Raise();
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
// can't call clear, etc, just forget the whole thing, so GC will clean
CacheByReader = new();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
if (_lowMemoryFlag.Raise())
{
Clear();
}
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
foreach (var state in _subscriptionConnectionStates)
{
if (state.Value.Connection != null)
{
continue;
}
_subscriptionConnectionStates.Remove(state.Key, out _);
}
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
var size = FreeAllPooledMemory();
if (_log.IsInfoEnabled)
{
_log.Info($"{_debugTag}: HandleLowMemory freed {new Size(size, SizeUnit.Bytes)} in {_debugTag}");
}
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
var size = FreeAllPooledMemory();
if (_log.IsInfoEnabled)
{
_log.Info($"{_debugTag}: HandleLowMemory freed {size:#,#;;0} bytes in {_debugTag}");
}
}
public void clear_all_buffers_from_current_generation_on_low_memory(LowMemorySeverity lowMemorySeverity)
{
var encryptionBuffersPool = new EncryptionBuffersPool();
var generation = encryptionBuffersPool.Generation;
var i = 1;
var toFree = new List <(IntPtr, long)>();
while (i <= new Size(8, SizeUnit.Megabytes).GetValue(SizeUnit.Bytes))
{
var ptr = encryptionBuffersPool.Get(i, out _);
toFree.Add(((IntPtr)ptr, i));
i *= 2;
}
var stats = encryptionBuffersPool.GetStats();
Assert.Equal(0, stats.TotalSize);
encryptionBuffersPool.LowMemory(lowMemorySeverity);
stats = encryptionBuffersPool.GetStats();
Assert.Equal(0, stats.TotalSize);
foreach (var o in toFree)
{
encryptionBuffersPool.Return((byte *)o.Item1, o.Item2, NativeMemory.ThreadAllocations.Value, generation);
}
stats = encryptionBuffersPool.GetStats();
Assert.Equal(0, stats.TotalSize);
var size = 8 * 1024;
var pointer = encryptionBuffersPool.Get(size, out _);
encryptionBuffersPool.Return(pointer, size, NativeMemory.ThreadAllocations.Value, encryptionBuffersPool.Generation);
// will cache the buffer
stats = encryptionBuffersPool.GetStats();
Assert.Equal(size, stats.TotalSize);
// will continue to cache the buffer
encryptionBuffersPool.LowMemory(lowMemorySeverity);
stats = encryptionBuffersPool.GetStats();
Assert.Equal(size, stats.TotalSize);
encryptionBuffersPool.LowMemoryOver();
ClearMemory(encryptionBuffersPool);
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
var alreadyInLowMem = !LowMemoryFlag.Raise();
if (lowMemorySeverity != LowMemorySeverity.ExtremelyLow)
{
return;
}
if (alreadyInLowMem)
{
return;
}
Interlocked.Increment(ref _generation);
while (_globalQueue.TryDequeue(out var result))
{
if (result.InUse.Raise())
{
result.Dispose();
}
}
foreach (var coreContext in _perCoreContexts)
{
for (int i = 0; i < coreContext.Length; i++)
{
var context = coreContext[i];
if (context != null && context.InUse.Raise())
{
context.Dispose();
Interlocked.CompareExchange(ref coreContext[i], null, context);
}
}
}
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
// cleanup operations older than 1 minute only
// Client API might still be waiting for the status
CleanupOperationsInternal(_completed, TimeSpan.FromMinutes(1));
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
_isLowMemory = true;
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
RunIdleOperations();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
TermsCachePerReader.Clear();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
Results.Clear();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
_cache.Clear();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
// will defer the timeout event if we detected low-memory
_timeoutEventSlim.Set();
}
public void LowMemory(LowMemorySeverity lowMemorySeverity)
{
_lastLowMemoryEventTicks = DateTime.UtcNow.Ticks;
_lowMemoryFlag.Raise();
}
