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Diff for /pegasus/src/Pegasus/Common/Thread.cpp between version 1.24 and 1.36.4.6

version 1.24, 2002/08/28 01:18:45 version 1.36.4.6, 2003/08/14 14:26:20
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 PEGASUS_NAMESPACE_BEGIN PEGASUS_NAMESPACE_BEGIN
  
   
 void thread_data::default_delete(void * data) void thread_data::default_delete(void * data)
 { {
    if( data != NULL)    if( data != NULL)
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 } }
  
 Boolean Thread::_signals_blocked = false; Boolean Thread::_signals_blocked = false;
   // l10n
   
   
   // l10n
   PEGASUS_THREAD_KEY_TYPE Thread::_platform_thread_key;
   Boolean Thread::_key_initialized = false;
   Boolean Thread::_key_error = false;
  
 // for non-native implementations // for non-native implementations
 #ifndef PEGASUS_THREAD_CLEANUP_NATIVE #ifndef PEGASUS_THREAD_CLEANUP_NATIVE
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 #endif #endif
  
   // l10n start
   Sint8 Thread::initializeKey()
   {
      PEG_METHOD_ENTER(TRC_THREAD, "Thread::initializeKey");
      if (!Thread::_key_initialized)
      {
           if (Thread::_key_error)
           {
                   Tracer::trace(TRC_THREAD, Tracer::LEVEL4,
                             "Thread: ERROR - thread key error");
                   return -1;
           }
   
           if (pegasus_key_create(&Thread::_platform_thread_key) == 0)
           {
                   Tracer::trace(TRC_THREAD, Tracer::LEVEL4,
                             "Thread: able to create a thread key");
                   Thread::_key_initialized = true;
           }
           else
           {
                   Tracer::trace(TRC_THREAD, Tracer::LEVEL4,
                             "Thread: ERROR - unable to create a thread key");
                   Thread::_key_error = true;
                   return -1;
           }
      }
   
      PEG_METHOD_EXIT();
      return 0;
   }
   
   Thread * Thread::getCurrent()
   {
       PEG_METHOD_ENTER(TRC_THREAD, "Thread::getCurrent");
       if (Thread::initializeKey() != 0)
       {
           return NULL;
       }
       PEG_METHOD_EXIT();
       return (Thread *)pegasus_get_thread_specific(_platform_thread_key);
   }
   
   void Thread::setCurrent(Thread * thrd)
   {
      PEG_METHOD_ENTER(TRC_THREAD, "Thread::setCurrent");
      if (Thread::initializeKey() == 0)
      {
           if (pegasus_set_thread_specific(Thread::_platform_thread_key,
                                                                    (void *) thrd) == 0)
           {
                   Tracer::trace(TRC_THREAD, Tracer::LEVEL4,
                             "Successful set Thread * into thread specific storage");
           }
           else
           {
                   Tracer::trace(TRC_THREAD, Tracer::LEVEL4,
                             "ERROR: got error setting Thread * into thread specific storage");
           }
      }
      PEG_METHOD_EXIT();
   }
   
   AcceptLanguages * Thread::getLanguages()
   {
       PEG_METHOD_ENTER(TRC_THREAD, "Thread::getLanguages");
   
           Thread * curThrd = Thread::getCurrent();
           if (curThrd == NULL)
                   return NULL;
           AcceptLanguages * acceptLangs =
                    (AcceptLanguages *)curThrd->reference_tsd("acceptLanguages");
           curThrd->dereference_tsd();
       PEG_METHOD_EXIT();
           return acceptLangs;
   }
   
   void Thread::setLanguages(AcceptLanguages *langs) //l10n
   {
      PEG_METHOD_ENTER(TRC_THREAD, "Thread::setLanguages");
   
      Thread * currentThrd = Thread::getCurrent();
      if (currentThrd != NULL)
      {
                   // deletes the old tsd and creates a new one
                   currentThrd->put_tsd("acceptLanguages",
                           thread_data::default_delete,
                           sizeof(AcceptLanguages *),
                           langs);
      }
   
      PEG_METHOD_EXIT();
   }
   
   void Thread::clearLanguages() //l10n
   {
      PEG_METHOD_ENTER(TRC_THREAD, "Thread::clearLanguages");
   
      Thread * currentThrd = Thread::getCurrent();
      if (currentThrd != NULL)
      {
                   // deletes the old tsd
                   currentThrd->delete_tsd("acceptLanguages");
      }
   
      PEG_METHOD_EXIT();
   }
   // l10n end
   
 DQueue<ThreadPool> ThreadPool::_pools(true); DQueue<ThreadPool> ThreadPool::_pools(true);
  
  
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       _link_pool(_init_thread());       _link_pool(_init_thread());
    }    }
    _pools.insert_last(this);    _pools.insert_last(this);
   
 } }
  
  
  
 ThreadPool::~ThreadPool(void) ThreadPool::~ThreadPool(void)
 { {
      try
      {
    _pools.remove(this);    _pools.remove(this);
    _dying++;    _dying++;
    Thread *th = 0;    Thread *th = 0;
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       delete th;       delete th;
       th = _dead.remove_first();       th = _dead.remove_first();
    }    }
      }
      catch(...)
      {
      }
 } }
  
 // make this static to the class // make this static to the class
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       PEG_METHOD_EXIT();       PEG_METHOD_EXIT();
       throw NullPointer();       throw NullPointer();
    }    }
   
   // l10n
      // Set myself into thread specific storage
      // This will allow code to get its own Thread
      Thread::setCurrent(myself);
   
    ThreadPool *pool = (ThreadPool *)myself->get_parm();    ThreadPool *pool = (ThreadPool *)myself->get_parm();
    if(pool == 0 )    if(pool == 0 )
    {    {
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       PEG_METHOD_EXIT();       PEG_METHOD_EXIT();
       myself->exit_self(0);       myself->exit_self(0);
    }    }
      catch(...)
      {
         PEG_METHOD_EXIT();
         myself->exit_self(0);
      }
   
    if(sleep_sem == 0 || deadlock_timer == 0)    if(sleep_sem == 0 || deadlock_timer == 0)
    {    {
       PEG_METHOD_EXIT();       PEG_METHOD_EXIT();
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       {       {
          gettimeofday(deadlock_timer, NULL);          gettimeofday(deadlock_timer, NULL);
       }       }
   
       gettimeofday(deadlock_timer, NULL);       gettimeofday(deadlock_timer, NULL);
       if( blocking_sem != 0 )       if( blocking_sem != 0 )
          blocking_sem->signal();          blocking_sem->signal();
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    // first go thread the dead q and clean it up as much as possible    // first go thread the dead q and clean it up as much as possible
    while(_dead.count() > 0)    while(_dead.count() > 0)
    {    {
         Tracer::trace(TRC_THREAD, Tracer::LEVEL4, "ThreadPool:: removing and joining dead thread");
       Thread *dead = _dead.remove_first();       Thread *dead = _dead.remove_first();
       if(dead == 0)       if(dead == 0)
          throw NullPointer();          throw NullPointer();
       if(dead->_handle.thid != 0)        dead->join();
       {  
          dead->detach();  
          destroy_thread(dead->_handle.thid, 0);  
          dead->_handle.thid = 0;  
          while(dead->_cleanup.count() )  
          {  
             // this may throw a permission exception,  
             // which I will remove from the code prior to stabilizing  
             dead->cleanup_pop(true);  
          }  
       }  
       delete dead;       delete dead;
       pegasus_sleep(1);  
    }    }
  
    DQueue<Thread> * map[2] =    DQueue<Thread> * map[2] =
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    int i = 0;    int i = 0;
    AtomicInt needed(0);    AtomicInt needed(0);
  
   #ifdef PEGASUS_DISABLE_KILLING_HUNG_THREADS
      // This change prevents the thread pool from killing "hung" threads.
      // The definition of a "hung" thread is one that has been on the run queue
      // for longer than the time interval set when the thread pool was created.
      // Cancelling "hung" threads has proven to be problematic.
   
      // With this change the thread pool will not cancel "hung" threads.  This
      // may prevent a crash depending upon the state of the "hung" thread.  In
      // the case that the thread is actually hung, this change causes the
      // thread resources not to be reclaimed.
   
      // Idle threads, those that have not executed a routine for a time
      // interval, continue to be destroyed.  This is normal and should not
      // cause any problems.
      for( ; i < 1; i++)
   #else
    for( ; i < 2; i++)    for( ; i < 2; i++)
   #endif
    {    {
       q = map[i];       q = map[i];
       if(q->count() > 0 )       if(q->count() > 0 )
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             }             }
             catch(...)             catch(...)
             {             {
                  q->unlock();
                return bodies;                return bodies;
             }             }
  
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                if(th != 0)                if(th != 0)
                {                {
                     if( i == 0 )
                     {
                   th->delete_tsd("work func");                   th->delete_tsd("work func");
                   th->put_tsd("work func", NULL,                   th->put_tsd("work func", NULL,
                               sizeof( PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)),                               sizeof( PEGASUS_THREAD_RETURN (PEGASUS_THREAD_CDECL *)(void *)),
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                   if(sleep_sem == 0)                   if(sleep_sem == 0)
                   {                   {
                           q->unlock();
                      th->dereference_tsd();                      th->dereference_tsd();
                      throw NullPointer();                      throw NullPointer();
                   }                   }
  
                   // put the thread on the dead  list  
                   _dead.insert_first(th);  
                   bodies++;                   bodies++;
                   sleep_sem->signal();  
   
                   th->dereference_tsd();                   th->dereference_tsd();
                        _dead.insert_first(th);
                        sleep_sem->signal();
                   th = 0;                   th = 0;
                }                }
                     else
                     {
                        // deadlocked threads
                        Tracer::trace(TRC_THREAD, Tracer::LEVEL4, "Killing a deadlocked thread");
                        th->cancel();
                        delete th;
                     }
                  }
             }             }
             th = q->next(th);             th = q->next(th);
             pegasus_sleep(1);             pegasus_sleep(1);
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    struct timeval now, finish, remaining;    struct timeval now, finish, remaining;
    Uint32 usec;    Uint32 usec;
    gettimeofday(&now, NULL);     pegasus_gettimeofday(&now);
      /* remove valgrind error */
      pegasus_gettimeofday(&remaining);
   
  
    finish.tv_sec = start->tv_sec + interval->tv_sec;    finish.tv_sec = start->tv_sec + interval->tv_sec;
    usec = start->tv_usec + interval->tv_usec;    usec = start->tv_usec + interval->tv_usec;
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       return false;       return false;
 } }
  
   
 PEGASUS_THREAD_RETURN ThreadPool::_undertaker( void *parm ) PEGASUS_THREAD_RETURN ThreadPool::_undertaker( void *parm )
 { {
    Thread *myself = reinterpret_cast<Thread *>(parm);     exit_thread((PEGASUS_THREAD_RETURN)1);
    if(myself != 0)     return (PEGASUS_THREAD_RETURN)1;
    {  
       myself->detach();  
       myself->_handle.thid = 0;  
       myself->cancel();  
       myself->test_cancel();  
       myself->exit_self(0);  
    }  
    return((PEGASUS_THREAD_RETURN)0);  
 } }
  
  
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    th->put_tsd("sleep sem", &_sleep_sem_del, sizeof(Semaphore), (void *)sleep_sem);    th->put_tsd("sleep sem", &_sleep_sem_del, sizeof(Semaphore), (void *)sleep_sem);
  
    struct timeval *dldt = (struct timeval *) ::operator new(sizeof(struct timeval));    struct timeval *dldt = (struct timeval *) ::operator new(sizeof(struct timeval));
      pegasus_gettimeofday(dldt);
   
    th->put_tsd("deadlock timer", thread_data::default_delete, sizeof(struct timeval), (void *)dldt);    th->put_tsd("deadlock timer", thread_data::default_delete, sizeof(struct timeval), (void *)dldt);
    // thread will enter _loop(void *) and sleep on sleep_sem until we signal it    // thread will enter _loop(void *) and sleep on sleep_sem until we signal it
   
    th->run();    th->run();
    _current_threads++;    _current_threads++;
    pegasus_yield();    pegasus_yield();
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 } }
  
  
   
 PEGASUS_NAMESPACE_END PEGASUS_NAMESPACE_END
  

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  Added in v.1.36.4.6
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