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// $Id$
#include "ace/Barrier.h"
#if defined (ACE_HAS_THREADS)
#if !defined (__ACE_INLINE__)
#include "ace/Barrier.inl"
#endif /* __ACE_INLINE__ */
#include "ace/Guard_T.h"
#if defined (ACE_HAS_DUMP)
# include "ace/Log_Msg.h"
#endif /* ACE_HAS_DUMP */
ACE_RCSID(ace, Barrier, "$Id$")
ACE_ALLOC_HOOK_DEFINE(ACE_Sub_Barrier)
void
ACE_Sub_Barrier::dump (void) const
{
#if defined (ACE_HAS_DUMP)
// ACE_TRACE ("ACE_Sub_Barrier::dump");
ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
this->barrier_finished_.dump ();
ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("running_threads_ = %d"), this->running_threads_));
ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("\n")));
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_HAS_DUMP */
}
ACE_Sub_Barrier::ACE_Sub_Barrier (unsigned int count,
ACE_Thread_Mutex &lock,
const ACE_TCHAR *name,
void *arg)
: barrier_finished_ (lock, name, arg),
running_threads_ (count)
{
// ACE_TRACE ("ACE_Sub_Barrier::ACE_Sub_Barrier");
}
ACE_ALLOC_HOOK_DEFINE(ACE_Barrier)
void
ACE_Barrier::dump (void) const
{
#if defined (ACE_HAS_DUMP)
// ACE_TRACE ("ACE_Barrier::dump");
ACE_DEBUG ((LM_DEBUG, ACE_BEGIN_DUMP, this));
this->lock_.dump ();
ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("current_generation_ = %d"), this->current_generation_));
ACE_DEBUG ((LM_DEBUG, ACE_LIB_TEXT ("\ncount_ = %d"), this->count_));
this->sub_barrier_1_.dump ();
this->sub_barrier_2_.dump ();
ACE_DEBUG ((LM_DEBUG, ACE_END_DUMP));
#endif /* ACE_HAS_DUMP */
}
ACE_Barrier::ACE_Barrier (unsigned int count,
const ACE_TCHAR *name,
void *arg)
: lock_ (name, (ACE_mutexattr_t *) arg),
current_generation_ (0),
count_ (count),
sub_barrier_1_ (count, lock_, name, arg),
sub_barrier_2_ (count, lock_, name, arg)
{
// ACE_TRACE ("ACE_Barrier::ACE_Barrier");
this->sub_barrier_[0] = &this->sub_barrier_1_;
this->sub_barrier_[1] = &this->sub_barrier_2_;
}
int
ACE_Barrier::wait (void)
{
// ACE_TRACE ("ACE_Barrier::wait");
ACE_GUARD_RETURN (ACE_Thread_Mutex, ace_mon, this->lock_, -1);
ACE_Sub_Barrier *sbp =
this->sub_barrier_[this->current_generation_];
// Check for shutdown...
if (sbp == 0)
return -1;
if (sbp->running_threads_ == 1)
{
// We're the last running thread, so swap generations and tell
// all the threads waiting on the barrier to continue on their
// way.
sbp->running_threads_ = this->count_;
// Swap generations.
this->current_generation_ = 1 - this->current_generation_;
sbp->barrier_finished_.broadcast ();
}
else
{
--sbp->running_threads_;
// Block until all the other threads wait().
while (sbp->running_threads_ != this->count_)
sbp->barrier_finished_.wait ();
}
return 0;
}
ACE_ALLOC_HOOK_DEFINE(ACE_Thread_Barrier)
ACE_Thread_Barrier::ACE_Thread_Barrier (unsigned int count,
const ACE_TCHAR *name)
: ACE_Barrier (count, name)
{
// ACE_TRACE ("ACE_Thread_Barrier::ACE_Thread_Barrier");
}
void
ACE_Thread_Barrier::dump (void) const
{
#if defined (ACE_HAS_DUMP)
// ACE_TRACE ("ACE_Thread_Barrier::dump");
ACE_Barrier::dump ();
#endif /* ACE_HAS_DUMP */
}
#if 0
ACE_ALLOC_HOOK_DEFINE(ACE_Process_Barrier)
ACE_Process_Barrier::ACE_Process_Barrier (u_int count,
const ACE_TCHAR *name)
: ACE_Barrier (count, USYNC_PROCESS, name)
{
// ACE_TRACE ("ACE_Process_Barrier::ACE_Process_Barrier");
}
void
ACE_Process_Barrier::dump (void) const
{
#if defined (ACE_HAS_DUMP)
// ACE_TRACE ("ACE_Process_Barrier::dump");
ACE_Barrier::dump ();
#endif /* ACE_HAS_DUMP */
}
#endif /* 0 */
#endif /* ACE_HAS_THREADS */
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