public void Stop(CancellationToken cancellationToken = default, bool immediate = false)
{
_logger.Info(() => "Stopping background task host");
var options = new ParallelOptions
{
CancellationToken = cancellationToken, MaxDegreeOfParallelism = ResolveConcurrency()
};
var pendingTasks = _pending.Where(entry => entry.Value.OnHalt != null);
Parallel.ForEach(pendingTasks, options, async e =>
{
// FIXME: halt operation won't have user data in this context
using var context = ProvisionExecutionContext(cancellationToken, null);
// ReSharper disable once AccessToDisposedClosure (this is safe: immediately invoked and blocking)
await e.Value.OnHalt.HaltAsync(context, immediate);
});
_pending.Clear();
_scheduler?.Dispose();
_scheduler = null;
_background.Stop(immediate);
_maintenance.Stop(immediate);
}
public void Stop(bool immediate, CancellationToken cancellationToken = default)
{
cancellationToken.ThrowIfCancellationRequested();
_logger.LogInformation(_localizer.GetString("Stopping operations host"));
_scheduler?.Dispose();
_scheduler = null;
_background?.Stop(immediate);
_maintenance?.Stop(immediate);
}
public void Stop()
{
if (_queue != null)
{
_queue.Dispose();
_queue = null;
}
if (_background != null)
{
_background.Dispose();
_background = null;
}
}
static void _mainTaskSheduler_QueueIsEmpty(object sender, EventArgs e)
{
QueuedTaskScheduler deprecatedScheduler = (QueuedTaskScheduler)sender;
deprecatedScheduler.QueueIsEmpty -= _mainTaskSheduler_QueueIsEmpty;
deprecatedScheduler.Dispose();
}
public void Stop(bool immediate = false)
{
Parallel.ForEach(_pending.Where(entry => entry.Value.OnHalt != null), e =>
{
e.Value.OnHalt.Halt(immediate);
});
_pending.Clear();
if (_scheduler != null)
{
_scheduler.Dispose();
_scheduler = null;
}
Background.Stop(immediate);
Maintenance.Stop(immediate);
}
public async Task Shutdown()
{
cancellationTokenSource.Cancel();
try
{
taskScheduler.Dispose();
await task.ConfigureAwait(false);
}
catch (OperationCanceledException)
{
}
}
public static void Dispose()
{
//Before disposing, Have to stop working thread on them
if (_mainTaskSheduler != null)
{
_mainTaskSheduler.Dispose();
}
if (_monoConcurrencyTaskSheduler != null)
{
_monoConcurrencyTaskSheduler.Dispose();
}
}
protected void parseSources(ParserFactory factory, IEnumerable <InputDescriptor> sources)
{
Stopwatch startTime = Stopwatch.StartNew();
Thread.VolatileWrite(ref tokenCount, 0);
int sourceCount = 0;
int inputSize = 0;
#if NET40PLUS
BlockingCollection <int> threadIdentifiers = new BlockingCollection <int>();
for (int i = 0; i < NUMBER_OF_THREADS; i++)
{
threadIdentifiers.Add(i);
}
ICollection <Task <int> > results = new List <Task <int> >();
QueuedTaskScheduler executorServiceHost = new QueuedTaskScheduler(NUMBER_OF_THREADS);
TaskScheduler executorService = executorServiceHost.ActivateNewQueue();
#else
ICollection <Func <int> > results = new List <Func <int> >();
#endif
foreach (InputDescriptor inputDescriptor in sources)
{
ICharStream input = inputDescriptor.GetInputStream();
sourceCount++;
input.Seek(0);
inputSize += input.Size;
#if NET40PLUS
Task <int> futureChecksum = Task.Factory.StartNew <int>(new Callable_1(input, factory, threadIdentifiers).call, CancellationToken.None, TaskCreationOptions.None, executorService);
#else
Func <int> futureChecksum = new Callable_1(input, factory).call;
#endif
results.Add(futureChecksum);
}
Checksum checksum = new CRC32();
foreach (var future in results)
{
#if NET40PLUS
int value = future.Result;
#else
int value = future();
#endif
if (COMPUTE_CHECKSUM)
{
updateChecksum(checksum, value);
}
}
#if NET40PLUS
executorServiceHost.Dispose();
#endif
Console.Out.WriteLine("Total parse time for {0} files ({1} KB, {2} tokens, checksum 0x{3:X8}): {4}ms",
sourceCount,
inputSize / 1024,
Thread.VolatileRead(ref tokenCount),
COMPUTE_CHECKSUM ? checksum.Value : 0,
startTime.ElapsedMilliseconds);
if (sharedLexers.Length > 0)
{
Lexer lexer = sharedLexers[0];
LexerATNSimulator lexerInterpreter = lexer.Interpreter;
DFA[] modeToDFA = lexerInterpreter.atn.modeToDFA;
if (SHOW_DFA_STATE_STATS)
{
int states = 0;
int configs = 0;
HashSet <ATNConfig> uniqueConfigs = new HashSet <ATNConfig>();
for (int i = 0; i < modeToDFA.Length; i++)
{
DFA dfa = modeToDFA[i];
if (dfa == null || dfa.states == null)
{
continue;
}
states += dfa.states.Count;
foreach (DFAState state in dfa.states.Values)
{
configs += state.configs.Count;
uniqueConfigs.UnionWith(state.configs);
}
}
Console.Out.WriteLine("There are {0} lexer DFAState instances, {1} configs ({2} unique), {3} prediction contexts.", states, configs, uniqueConfigs.Count, lexerInterpreter.atn.ContextCacheSize);
}
}
if (RUN_PARSER && sharedParsers.Length > 0)
{
Parser parser = sharedParsers[0];
// make sure the individual DFAState objects actually have unique ATNConfig arrays
ParserATNSimulator interpreter = parser.Interpreter;
DFA[] decisionToDFA = interpreter.atn.decisionToDFA;
if (SHOW_DFA_STATE_STATS)
{
int states = 0;
int configs = 0;
HashSet <ATNConfig> uniqueConfigs = new HashSet <ATNConfig>();
for (int i = 0; i < decisionToDFA.Length; i++)
{
DFA dfa = decisionToDFA[i];
if (dfa == null || dfa.states == null)
{
continue;
}
states += dfa.states.Count;
foreach (DFAState state in dfa.states.Values)
{
configs += state.configs.Count;
uniqueConfigs.UnionWith(state.configs);
}
}
Console.Out.WriteLine("There are {0} parser DFAState instances, {1} configs ({2} unique), {3} prediction contexts.", states, configs, uniqueConfigs.Count, interpreter.atn.ContextCacheSize);
}
int localDfaCount = 0;
int globalDfaCount = 0;
int localConfigCount = 0;
int globalConfigCount = 0;
int[] contextsInDFAState = new int[0];
for (int i = 0; i < decisionToDFA.Length; i++)
{
DFA dfa = decisionToDFA[i];
if (dfa == null || dfa.states == null)
{
continue;
}
if (SHOW_CONFIG_STATS)
{
foreach (DFAState state in dfa.states.Keys)
{
if (state.configs.Count >= contextsInDFAState.Length)
{
Array.Resize(ref contextsInDFAState, state.configs.Count + 1);
}
if (state.IsAcceptState)
{
bool hasGlobal = false;
foreach (ATNConfig config in state.configs)
{
if (config.ReachesIntoOuterContext)
{
globalConfigCount++;
hasGlobal = true;
}
else
{
localConfigCount++;
}
}
if (hasGlobal)
{
globalDfaCount++;
}
else
{
localDfaCount++;
}
}
contextsInDFAState[state.configs.Count]++;
}
}
if (EXPORT_LARGEST_CONFIG_CONTEXTS)
{
foreach (DFAState state in dfa.states.Keys)
{
foreach (ATNConfig config in state.configs)
{
string configOutput = config.ToDotString();
if (configOutput.Length <= configOutputSize)
{
continue;
}
configOutputSize = configOutput.Length;
writeFile(tmpdir, "d" + dfa.decision + ".s" + state.stateNumber + ".a" + config.Alt + ".config.dot", configOutput);
}
}
}
}
if (SHOW_CONFIG_STATS && currentPass == 0)
{
Console.Out.WriteLine(" DFA accept states: {0} total, {1} with only local context, {2} with a global context", localDfaCount + globalDfaCount, localDfaCount, globalDfaCount);
Console.Out.WriteLine(" Config stats: {0} total, {1} local, {2} global", localConfigCount + globalConfigCount, localConfigCount, globalConfigCount);
if (SHOW_DFA_STATE_STATS)
{
for (int i = 0; i < contextsInDFAState.Length; i++)
{
if (contextsInDFAState[i] != 0)
{
Console.Out.WriteLine(" {0} configs = {1}", i, contextsInDFAState[i]);
}
}
}
}
}
}
public void Dispose()
{
m_QueuedTaskScheduler.Dispose();
}
protected void parseSources(ParserFactory factory, IEnumerable<ICharStream> sources)
{
Stopwatch startTime = Stopwatch.StartNew();
Thread.VolatileWrite(ref tokenCount, 0);
int sourceCount = 0;
int inputSize = 0;
#if NET_4_0
BlockingCollection<int> threadIdentifiers = new BlockingCollection<int>();
for (int i = 0; i < NUMBER_OF_THREADS; i++)
threadIdentifiers.Add(i);
ICollection<Task<int>> results = new List<Task<int>>();
QueuedTaskScheduler executorServiceHost = new QueuedTaskScheduler(NUMBER_OF_THREADS);
TaskScheduler executorService = executorServiceHost.ActivateNewQueue();
#else
ICollection<Func<int>> results = new List<Func<int>>();
#endif
foreach (ICharStream input in sources)
{
sourceCount++;
input.Seek(0);
inputSize += input.Size;
#if NET_4_0
Task<int> futureChecksum = Task.Factory.StartNew<int>(new Callable_1(input, factory, threadIdentifiers).call, CancellationToken.None, TaskCreationOptions.None, executorService);
#else
Func<int> futureChecksum = new Callable_1(input, factory).call;
#endif
results.Add(futureChecksum);
}
Checksum checksum = new CRC32();
foreach (var future in results)
{
#if NET_4_0
int value = future.Result;
#else
int value = future();
#endif
if (COMPUTE_CHECKSUM)
{
updateChecksum(checksum, value);
}
}
#if NET_4_0
executorServiceHost.Dispose();
#endif
Console.Out.WriteLine("Total parse time for {0} files ({1} KB, {2} tokens, checksum 0x{3:X8}): {4}ms",
sourceCount,
inputSize / 1024,
Thread.VolatileRead(ref tokenCount),
COMPUTE_CHECKSUM ? checksum.Value : 0,
startTime.ElapsedMilliseconds);
if (sharedLexers.Length > 0)
{
Lexer lexer = sharedLexers[0];
LexerATNSimulator lexerInterpreter = lexer.Interpreter;
DFA[] modeToDFA = lexerInterpreter.atn.modeToDFA;
if (SHOW_DFA_STATE_STATS)
{
int states = 0;
int configs = 0;
HashSet<ATNConfig> uniqueConfigs = new HashSet<ATNConfig>();
for (int i = 0; i < modeToDFA.Length; i++)
{
DFA dfa = modeToDFA[i];
if (dfa == null || dfa.states == null)
{
continue;
}
states += dfa.states.Count;
foreach (DFAState state in dfa.states.Values)
{
configs += state.configs.Count;
uniqueConfigs.UnionWith(state.configs);
}
}
Console.Out.WriteLine("There are {0} lexer DFAState instances, {1} configs ({2} unique), {3} prediction contexts.", states, configs, uniqueConfigs.Count, lexerInterpreter.atn.GetContextCacheSize());
}
}
if (RUN_PARSER && sharedParsers.Length > 0)
{
Parser parser = sharedParsers[0];
// make sure the individual DFAState objects actually have unique ATNConfig arrays
ParserATNSimulator interpreter = parser.Interpreter;
DFA[] decisionToDFA = interpreter.atn.decisionToDFA;
if (SHOW_DFA_STATE_STATS)
{
int states = 0;
int configs = 0;
HashSet<ATNConfig> uniqueConfigs = new HashSet<ATNConfig>();
for (int i = 0; i < decisionToDFA.Length; i++)
{
DFA dfa = decisionToDFA[i];
if (dfa == null || dfa.states == null)
{
continue;
}
states += dfa.states.Count;
foreach (DFAState state in dfa.states.Values)
{
configs += state.configs.Count;
uniqueConfigs.UnionWith(state.configs);
}
}
Console.Out.WriteLine("There are {0} parser DFAState instances, {1} configs ({2} unique), {3} prediction contexts.", states, configs, uniqueConfigs.Count, interpreter.atn.GetContextCacheSize());
}
int localDfaCount = 0;
int globalDfaCount = 0;
int localConfigCount = 0;
int globalConfigCount = 0;
int[] contextsInDFAState = new int[0];
for (int i = 0; i < decisionToDFA.Length; i++)
{
DFA dfa = decisionToDFA[i];
if (dfa == null || dfa.states == null)
{
continue;
}
if (SHOW_CONFIG_STATS)
{
foreach (DFAState state in dfa.states.Keys)
{
if (state.configs.Count >= contextsInDFAState.Length)
{
Array.Resize(ref contextsInDFAState, state.configs.Count + 1);
}
if (state.isAcceptState)
{
bool hasGlobal = false;
foreach (ATNConfig config in state.configs)
{
if (config.ReachesIntoOuterContext)
{
globalConfigCount++;
hasGlobal = true;
}
else
{
localConfigCount++;
}
}
if (hasGlobal)
{
globalDfaCount++;
}
else
{
localDfaCount++;
}
}
contextsInDFAState[state.configs.Count]++;
}
}
if (EXPORT_LARGEST_CONFIG_CONTEXTS)
{
foreach (DFAState state in dfa.states.Keys)
{
foreach (ATNConfig config in state.configs)
{
string configOutput = config.ToDotString();
if (configOutput.Length <= configOutputSize)
{
continue;
}
configOutputSize = configOutput.Length;
writeFile(tmpdir, "d" + dfa.decision + ".s" + state.stateNumber + ".a" + config.Alt + ".config.dot", configOutput);
}
}
}
}
if (SHOW_CONFIG_STATS && currentPass == 0)
{
Console.Out.WriteLine(" DFA accept states: {0} total, {1} with only local context, {2} with a global context", localDfaCount + globalDfaCount, localDfaCount, globalDfaCount);
Console.Out.WriteLine(" Config stats: {0} total, {1} local, {2} global", localConfigCount + globalConfigCount, localConfigCount, globalConfigCount);
if (SHOW_DFA_STATE_STATS)
{
for (int i = 0; i < contextsInDFAState.Length; i++)
{
if (contextsInDFAState[i] != 0)
{
Console.Out.WriteLine(" {0} configs = {1}", i, contextsInDFAState[i]);
}
}
}
}
}
}
public void Dispose()
{
m_TaskScheduler.Dispose();
}
