tasks_map_ptr tasks_monitor_impl::active_tasks()
{
auto procs = build_tasks_list();
if( procs.size() <= 0 )
{
BOOST_THROW_EXCEPTION( err::internal_error() << err::description(
"Tasks array could not be empty" ) );
}
m_log->debug( "{}: tasks count {}", __func__, procs.size() );
m_stamp++;
std::list<std::future<std::shared_ptr<task_impl>>> tasks_list;
for( auto &proc : procs )
{
auto pid = proc.kp_proc.p_pid;
auto task = m_tasks->find( pid );
if( task == m_tasks->end() )
{
auto f = utils::async( [&proc, this ]() -> auto {
return std::make_shared<task_impl>( m_stamp, proc, m_log );
} );
tasks_list.emplace_back( std::move( f ) );
}
else
{
auto task_i = std::static_pointer_cast<task_impl>( task->second );
task_i->refresh( m_stamp, proc );
}
}
for( auto &tf : tasks_list )
{
auto t = tf.get();
m_tasks->insert( std::make_pair( t->pid(), t ) );
}
for( auto it = m_tasks->begin(); it != m_tasks->end(); )
{
auto task_i = std::static_pointer_cast<task_impl>( it->second );
if( task_i->stamp() != m_stamp )
m_tasks->erase( it++ );
else
++it;
}
return m_tasks;
}
void tasks_monitor_impl::refresh_tasks( tasks_refresh_list &tl )
{
timeval now;
gettimeofday( &now, NULL );
auto procs = build_tasks_list();
if( procs.size() <= 0 )
{
BOOST_THROW_EXCEPTION( err::internal_error() << err::description(
"Tasks array could not be empty" ) );
}
m_log->debug( "{}: tasks count {}", __func__, procs.size() );
timeval elapsed;
timersub( &now, &m_refresh_time, &elapsed );
for( auto &proc : procs )
{
auto pid = proc.kp_proc.p_pid;
auto task = m_tasks->find( pid );
if( task == m_tasks->end() )
{
auto f = std::async( [&proc, &elapsed, this ]() -> auto {
return std::make_shared<task_impl>( m_stamp, elapsed, proc,
m_log );
} );
tl.emplace_back( std::move( f ) );
}
else
{
auto task_i = std::static_pointer_cast<task_impl>( task->second );
task_i->refresh( m_stamp, elapsed, proc );
}
}
m_refresh_time = now;
}
