public static void AddCache(string name, CacheManager cacheManager)
{
if (String.IsNullOrEmpty(name))
{
throw new ArgumentNullException(nameof(name));
}
using (TimedLock.Lock(_dictionaryLockObject))
{
if (CacheExists(name))
{
throw new InvalidOperationException("cache already exists");
}
_allCaches[name] = cacheManager ?? throw new ArgumentNullException(nameof(cacheManager));
}
}
/// <summary>
/// Returns the numer of caches
/// </summary>
/// <returns></returns>
internal static CacheManager GetCache(string cacheName)
{
if (String.IsNullOrEmpty(cacheName))
{
throw new ArgumentNullException(nameof(cacheName));
}
using (TimedLock.Lock(_dictionaryLockObject))
{
if (_allCaches.ContainsKey(cacheName))
{
return(_allCaches[cacheName]);
}
}
return(null);
}
/// <summary>
/// Retrieves a parameter value
/// </summary>
/// <param name="paramName">parameter name
///
/// does not include the parameter seperator i.e. - or /</param>
/// <param name="defaultValue">Default value if not found</param>
/// <returns>Parameter value if found, otherwise defaultValue</returns>
public static string GetOption(string paramName, string defaultValue = "")
{
if (_parameters == null)
{
throw new Exception("Parameters not initialised");
}
using (TimedLock.Lock(_lockObject))
{
if (_parameters.ContainsKey(_caseSensitive ? paramName : paramName.ToLower()))
{
return(_parameters[_caseSensitive ? paramName : paramName.ToLower()]);
}
}
return(defaultValue);
}
private void HookFolders()
{
using (TimedLock.Lock(_fileLockObject))
{
foreach (string path in _hookedFolders)
{
FileSystemWatcher watcher = new System.IO.FileSystemWatcher(path);
watcher.Changed += watcher_Changed;
watcher.Deleted += watcher_Deleted;
watcher.Renamed += watcher_Renamed;
watcher.Created += watcher_Created;
watcher.EnableRaisingEvents = true;
watcher.IncludeSubdirectories = true;
_watchedFolders.Add(watcher);
}
}
}
/// <summary>
///
/// </summary>
/// <param name="session"></param>
public static void UpdateSession(UserSession session)
{
if (session.Status == SessionStatus.Updated)
{
return;
}
using (TimedLock.Lock(_tempLockObject))
{
_tempUserSessions.Add(session);
if (session.Status == SessionStatus.Continuing)
{
session.Status = SessionStatus.Initialising;
}
}
}
/// <summary>
/// Returns the number of items in the cache
/// </summary>
/// <param name="index">Index of cache</param>
/// <returns>integer</returns>
public static int GetCacheCount(int index)
{
int i = 0;
using (TimedLock.Lock(_dictionaryLockObject))
{
foreach (KeyValuePair <string, CacheManager> cManager in _allCaches)
{
if (i == index)
{
return(cManager.Value.Count);
}
i++;
}
}
throw new IndexOutOfRangeException();
}
/// <summary>
/// Cancel's a running thread
/// </summary>
/// <param name="name">Name of the thread</param>
public static void Cancel(string name)
{
if (_cpuUsage == null)
{
throw new InvalidOperationException("ThreadManager must be initialised");
}
using (TimedLock.Lock(_lockObject, new TimeSpan(0, 0, 30)))
{
foreach (ThreadManager item in _threadList)
{
if (item.Name == name && !item.MarkedForRemoval)
{
item.CancelThread();
break;
}
}
}
}
/// <summary>
/// Checks wether a thread with a specific name exists and if so returns it
/// </summary>
/// <param name="name">Name of Thread
///
/// Exact match which is case sensistive</param>
/// <returns>ThreadManager object if thread exists, otherwise null</returns>
public static ThreadManager Find(string name)
{
if (_cpuUsage == null)
{
throw new InvalidOperationException("ThreadManager must be initialised");
}
using (TimedLock.Lock(_lockObject))
{
foreach (ThreadManager item in _threadList)
{
if (item.Name == name && !item.MarkedForRemoval)
{
return(item);
}
}
}
return(null);
}
/// <summary>
/// Adds a thread to the list of threads being watched
/// </summary>
/// <param name="thread">Thread to start watching</param>
public void ThreadAdd(ThreadManager thread)
{
using (TimedLock.Lock(_lockObject))
{
foreach (ThreadManager watchedThread in _watchedThreads)
{
if (thread.ThreadID == watchedThread.ThreadID)
{
return;
}
}
_watchedThreads.Add(thread);
if (!_threadTimes.ContainsKey(thread.ID))
{
_threadTimes.Add(thread.ID, new TimeSpan());
}
}
}
/// <summary>
/// PageView is used whenever a user visits a page
/// </summary>
/// <param name="page">Current page being viewed</param>
/// <param name="referrer">Current Referrer</param>
/// <param name="isPostBack">Is Post Back</param>
public void PageView(string page, string referrer, bool isPostBack)
{
using (TimedLock.Lock(_pageViewLockObject))
{
PageViewData newPageView = new PageViewData(page, referrer, isPostBack);
_pageViews.Add(newPageView);
if (UserSessionManager.SaveImmediately)
{
newPageView.SaveStatus = Classes.SaveStatus.RequiresSave;
UserSessionManager.Instance.RaiseSavePage(this, newPageView);
}
else
{
newPageView.SaveStatus = SaveStatus.Pending;
}
}
int pages = _pageViews.Count - 1;
if (pages >= 1)
{
// calculate page time for previous page
PageViewData previousPage = _pageViews[pages - 1];
previousPage.TotalTime = DateTime.UtcNow - previousPage.TimeStamp;
// not a bounce as already moved onto another page
if (Bounced)
{
Bounced = false;
}
previousPage.SaveStatus = Classes.SaveStatus.RequiresSave;
PageSaveStatus = Classes.SaveStatus.RequiresSave;
}
CurrentPage = page;
}
public static void Initialise(ICpuUsage cpuUsage)
{
// only initialize once
if (_cpuUsage != null)
{
return;
}
_cpuUsage = cpuUsage ?? throw new ArgumentNullException(nameof(cpuUsage));
using (TimedLock.Lock(_lockObject))
{
_globalCancelRequested = false;
if (_threadManager == null)
{
_threadManager = new ThreadManagerManager();
ThreadStart(_threadManager, "Thread Manager - Management Thread", ThreadPriority.BelowNormal, false);
}
if (_threadAbortManager == null)
{
_threadAbortManager = new ThreadAbortManager();
ThreadStart(_threadAbortManager, "Thread Abort - Management Thread", ThreadPriority.Lowest, false);
}
if (_threadCacheManager == null)
{
_threadCacheManager = new ThreadCacheManager();
Classes.ThreadManager.ThreadStart(_threadCacheManager,
"Cache Management Thread", ThreadPriority.Lowest);
}
}
}
/// <summary>
/// Starts a new thread
/// </summary>
/// <param name="thread"></param>
/// <param name="name"></param>
/// <param name="priority"></param>
/// <param name="addToList"></param>
private static void ThreadStart(ThreadManager thread, string name, ThreadPriority priority, bool addToList, bool isBackgroundThread)
{
if (_cpuUsage == null)
{
throw new InvalidOperationException("ThreadManager must be initialised");
}
if (thread == null)
{
throw new ArgumentNullException("thread parameter can not be null");
}
// generic properties
thread.ThreadFinishing += thread_ThreadFinishing;
thread.IsBackGround = isBackgroundThread;
thread._thread = new Thread(thread.ThreadRun);
thread._thread.IsBackground = isBackgroundThread;
thread._thread.Name = name;
if (addToList)
{
lock (_lockObject)
{
if (_threadList.Count >= _maximumRunningThreads)
{
if (_allowThreadsToPool)
{
if (_threadPool.Count > _maximumThreadPoolSize)
{
throw new Exception("Thread Pool Count exceeded");
}
_threadPool.Add(thread);
// notify listners that a thread has been added to the queue
ThreadQueueAddItem?.Invoke(null, new ThreadManagerEventArgs(thread));
return;
}
else
{
throw new Exception("Maximum running threads exceeded.");
}
}
}
}
thread._thread.Priority = priority;
thread._thread.IsBackground = isBackgroundThread;
thread._thread.Start(thread._parameters);
if (addToList)
{
using (TimedLock.Lock(_lockObject))
{
thread._lastCommunication = DateTime.UtcNow;
//_countOfThreads++;
//_threadList.Add(thread);
}
}
}
/// <summary>
/// Thread run method
/// </summary>
/// <param name="parameters">Thread parameters</param>
/// <returns>true if execution should continue, otherwise false</returns>
protected override bool Run(object parameters)
{
// move sessions from temp storage to processing storage
using (TimedLock.Lock(_tempLockObject))
{
for (int i = _tempUserSessions.Count - 1; i >= 0; i--)
{
using (TimedLock.Lock(_sessionLockObject))
{
_userSessions.Add(_tempUserSessions[i]);
System.Threading.Thread.Sleep(0);
}
_tempUserSessions.RemoveAt(i);
}
}
using (TimedLock.Lock(_sessionLockObject))
{
for (int i = _userSessions.Count - 1; i >= 0; i--)
{
UserSession session = _userSessions[i];
switch (session.Status)
{
case SessionStatus.Updated:
_userSessions.Remove(session);
break;
case SessionStatus.Initialising:
if (InitialiseWebsite)
{
InitialiseSession(session);
}
_userSessions.Remove(session);
break;
case SessionStatus.Closing:
FinaliseSession(session);
_userSessions.Remove(session);
break;
}
}
}
if (_loopCounter % 3 == 0)
{
if (OnSessionSave != null && UserSessions != null)
{
foreach (CacheItem item in UserSessions.Items)
{
UserSession session = (UserSession)item.GetValue(true);
// every 15 seconds or so save the data
using (TimedLock.Lock(_sessionLockObject))
{
using (TimedLock.Lock(session))
{
if (session.SaveStatus == SaveStatus.RequiresSave || session.PageSaveStatus == SaveStatus.RequiresSave)
{
RaiseSessionSave(session);
session.PageSaveStatus = SaveStatus.Saved;
}
}
}
System.Threading.Thread.Sleep(0);
}
}
if (_loopCounter > Int64.MaxValue - 50)
{
_loopCounter = Int64.MinValue;
}
}
_loopCounter++;
return(!this.HasCancelled());
}
protected override bool Run(object parameters)
{
// check to see if timeout value of cancel has expired, if so, kill the thread
using (TimedLock.Lock(_lockObject))
{
_cpuUsage.GetProcessUsage();
for (int i = _threadList.Count - 1; i >= 0; i--)
{
ThreadManager item = _threadList[i];
if (_checkForHangingThreads)
{
TimeSpan hangingSpan = DateTime.UtcNow - item._lastCommunication;
if (item.HangTimeout > 0 && !item._cancel && hangingSpan.TotalMinutes > item.HangTimeout)
{
//set time out long enough for the thread to clear itself out
// if it doesn't then we will force the closure
item.CancelThread(10000, true);
}
}
if (item.MarkedForRemoval)
{
item.ThreadFinishing -= thread_ThreadFinishing;
}
if (item._cancel)
{
TimeSpan span = DateTime.UtcNow - item._cancelRequested;
if (span.TotalMilliseconds > item._cancelTimeoutMilliseconds)
{
if (!item.MarkedForRemoval)
{
_countOfThreads--;
item.ThreadFinishing -= thread_ThreadFinishing;
_threadList.Remove(item);
}
RaiseThreadForcedToClose(item);
_abortPool.Add(item);
}
}
// if there is enough space, can we run one of the threads in the pool?
if (AllowThreadPool && _threadPool.Count > 0)
{
while (_threadList.Count < MaximumRunningThreads)
{
ThreadManager nextRunItem = _threadPool[0];
_threadPool.RemoveAt(0);
RaiseThreadQueueRemoveItem(nextRunItem);
ThreadStart(nextRunItem, nextRunItem.Name, nextRunItem._thread.Priority, _thread.IsBackground);
}
}
}
}
return(!HasCancelled());
}
/// <summary>
/// Thread execution method
/// </summary>
/// <param name="parameters"></param>
protected void ThreadRun(object parameters)
{
ThreadID = _cpuUsage.GetCurrentThreadId();
ID = Thread.CurrentThread.ManagedThreadId;
if (_monitorCPUUsage)
{
_cpuUsage.ThreadAdd(this);
}
TimeStart = DateTime.UtcNow;
// is the start being delayed
if (_delayStart > 0)
{
// need to ensure that if the app is closed prior to the thread being
// run then we provide a mechanism for the thread to close
DateTime continueTime = DateTime.UtcNow.AddMilliseconds(_delayStart);
while (continueTime > DateTime.UtcNow)
{
Thread.Sleep(100);
if (HasCancelled())
{
break;
}
}
}
_lastRun = DateTime.UtcNow.AddDays(RunAtStartup ? -1 : 0);
DateTime lastPing = DateTime.UtcNow;
using (TimedLock.Lock(_lockObject))
{
_threadList.Add(this);
_countOfThreads++;
}
RaiseThreadStart(this);
try
{
while (true) // always loop
{
try
{
//have we been asked to cancel the thread?
if (_cancel)
{
return;
}
TimeSpan span = DateTime.UtcNow - _lastRun;
// run the thread
if (span.TotalMilliseconds > RunInterval.TotalMilliseconds)
{
if (!Run(_parameters))
{
return;
}
_lastRun = DateTime.UtcNow;
}
span = DateTime.UtcNow - lastPing;
if (span.TotalSeconds > 30)
{
lastPing = DateTime.UtcNow;
Ping();
}
// play niceley with everyone else
Thread.Sleep(SleepInterval);
}
catch (ThreadAbortException)
{
return;
}
catch (Exception error)
{
RaiseOnException(error);
if (!ContinueIfGlobalException)
{
throw;
}
}
}
}
finally
{
TimeFinish = DateTime.UtcNow;
if (_monitorCPUUsage && _cpuUsage != null)
{
_cpuUsage.ThreadRemove(this);
}
using (TimedLock.Lock(_lockObject))
{
_threadList.Remove(this);
_countOfThreads--;
}
RaiseThreadFinished(this);
}
}
/// <summary>
/// Retrieves the total process usage for the current process
/// </summary>
/// <returns></returns>
public decimal GetProcessUsage()
{
decimal Result = _cpuUsage;
if (!EnoughTimePassed)
{
return(Result);
}
#if WINDOWS_ONLY
using (TimedLock.Lock(_lockObject))
{
ThreadCPUChanged = false;
ComTypes.FILETIME sysIdle, sysKernel, sysUser;
Process process = Process.GetCurrentProcess();
TimeSpan procTime = process.TotalProcessorTime;
if (!GetSystemTimes(out sysIdle, out sysKernel, out sysUser))
{
return(Result);
}
// get thread times
foreach (ProcessThread thread in Process.GetCurrentProcess().Threads)
{
if (_threadTimes.ContainsKey(thread.Id))
{
_threadTimes[thread.Id] = thread.TotalProcessorTime;
}
}
Int64 sysKernelDiff = SubtractTimes(sysKernel, _prevSysKernel);
Int64 sysUserDiff = SubtractTimes(sysUser, _prevSysUser);
Int64 sysTotal = sysKernelDiff + sysUserDiff;
Int64 processTotal = procTime.Ticks - _prevProcTotal.Ticks;
if (sysTotal > 0 && processTotal > 0)
{
_cpuUsage = (100.0m * processTotal) / sysTotal;
}
else
{
_cpuUsage = 0;
}
_prevProcTotal = procTime;
_prevSysKernel = sysKernel;
_prevSysUser = sysUser;
decimal otherUsage = 0.0m;
foreach (ThreadManager watchedThread in _watchedThreads)
{
TimeSpan span;
if (_threadTimes.ContainsKey(watchedThread.ID))
{
span = _threadTimes[watchedThread.ID];
}
else
{
span = new TimeSpan();
}
watchedThread.CPUUsageChanged = false;
watchedThread.UpdateThreadUsage(processTotal, sysTotal, span);
if (!ThreadCPUChanged && watchedThread.CPUUsageChanged)
{
ThreadCPUChanged = true;
}
otherUsage += watchedThread.ProcessCpuUsage;
}
OtherProcessCPUUsage = Utilities.CheckMinMax(100 - otherUsage, 0.0m, 100.00m); //_cpuUsage - otherUsage;
_lastRun = DateTime.UtcNow;
Result = _cpuUsage;
}
if (ThreadCPUChanged)
{
ThreadManager.RaiseThreadCpuChanged();
}
#endif
return(Result);
}