c# - CPU is 100% at multithreading -

first i've read posts here regarding issue , manged progress bit. seems need :)

i have program several threads, (not always) cpu usage of program increasing 100% , never reduced until shut down program.

as read in other similar posts, ran app using visual studio (2012 - ultimate). paused app, , open threads window. there pauses threads until i've found 4 threads stuck app. refer same line of code (a call constructor). checked constructor inside , outside , couldn't find loop cause it. more careful i've added break point every line of code , resume app. none of them have been triggered.

this line of code:

   public static void generatedefacementsensors(icrawlermanager cm)     {         m_sensorsmap = new dictionary<defacementsensortype, defacementsensor>();          // create instance of sensors         // new defacement sensor, don't forget add appropriate line here         // m_sensorsmap.add(defacementsensortype.[type], new [type]sensor())         try         {              if (m_sensorsmap.count <= 0)             {                 m_sensorsmap.add(defacementsensortype.backgroundsensor, new backgroundsensor());                 m_sensorsmap.add(defacementsensortype.taglinessensor, new taglinessensor(cm.database));                 m_sensorsmap.add(defacementsensortype.singleimagesensor, new singleimagesensor());             }         }         catch (exception)         {             console.writeline("there problem initializing defacement sensors");          }       } 

the second "m_sensorsmap.add" marked green arrow, understand it, means it's still waiting first line finish.

by way, m_sensorsmap.count value 3.

how can find problem? loop? or maybe deadlock (not make sense because shouldn't 100% cpu, right?) it's pointless upload code because huge project. need more general how debug? else loop?

because it's bug returns every while , i'm not closing app until found problem :)

thanks in advance!!

edit: constructors:

     public taglinessensor(idatabase db)     {         m_db = db;     } 

i couldn't found problem i've changed design on order not call constructors anymore.

thanks guys tried help.

shaul