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fix condition/round_robin

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This commit is contained in:
Oliver Kowalke
2013-01-06 14:10:50 +01:00
parent 20803f4c1d
commit 2903581791
6 changed files with 131 additions and 118 deletions
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30
src/condition.cpp
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@@ -23,7 +23,9 @@ condition::condition() :
cmd_( SLEEPING),
waiters_( 0),
enter_mtx_( false),
check_mtx_()
check_mtx_(),
waiting_mtx_(),
waiting_()
{}
condition::~condition()
@@ -42,11 +44,20 @@ condition::notify_one()
return;
}
command expected = NOTIFY_ONE;
while ( SLEEPING != cmd_.compare_exchange_strong( expected, SLEEPING) )
command expected = SLEEPING;
while ( ! cmd_.compare_exchange_strong( expected, NOTIFY_ONE) )
{
this_fiber::yield();
expected = NOTIFY_ONE;
expected = SLEEPING;
}
detail::spin_mutex::scoped_lock lk( waiting_mtx_);
if ( ! waiting_.empty() )
{
detail::fiber_base::ptr_t f;
f.swap( waiting_.front() );
waiting_.pop_front();
f->set_ready();
}
}
@@ -70,12 +81,17 @@ condition::notify_all()
}
//Notify that all threads should execute wait logic
command expected = NOTIFY_ALL;
while ( SLEEPING != cmd_.compare_exchange_strong( expected, SLEEPING) )
command expected = SLEEPING;
while ( SLEEPING != cmd_.compare_exchange_strong( expected, NOTIFY_ALL) )
{
this_fiber::yield();
expected = NOTIFY_ALL;
expected = SLEEPING;
}
detail::spin_mutex::scoped_lock lk( waiting_mtx_);
BOOST_FOREACH( detail::fiber_base::ptr_t const& f, waiting_)
{ f->set_ready(); }
waiting_.clear();
}
}}