void output_stream::write_async(detail::buffer const& in)
{ // {{{
if (in.empty())
return;
// Perform the IO in another OS thread.
hpx::get_thread_pool("io_pool")->get_io_service().post(
boost::bind(&output_stream::call_write_async, this, in));
} // }}}
void output_stream::call_write_sync(detail::buffer in,
threads::thread_id_type caller)
{
// Perform the IO operation.
in.write(write_f, mtx_);
// Wake up caller.
threads::set_thread_state(caller, threads::pending);
}
void output(boost::uint32_t locality_id, boost::uint64_t count,
detail::buffer in, F const& write_f, Mutex& mtx)
{
typename Mutex::scoped_lock l(mtx);
data_type& data = output_data_map_[locality_id];
if (count == data.first)
{
// this is the next expected output line
if (!in.empty())
{
// output the line as requested
util::scoped_unlock<typename Mutex::scoped_lock> ul(l);
in.write(write_f, mtx);
}
++data.first;
// print all consecutive pending buffers
output_data_type::iterator next = data.second.find(++count);
while (next != data.second.end())
{
buffer next_in = (*next).second;
if (!next_in.empty())
{
// output the next line
util::scoped_unlock<typename Mutex::scoped_lock> ul(l);
next_in.write(write_f, mtx);
}
data.second.erase(next);
// find next entry in map
++data.first;
next = data.second.find(++count);
}
}
else
{
HPX_ASSERT(count > data.first);
data.second.insert(output_data_type::value_type(count, in));
}
}
void output_stream::write_sync(detail::buffer const& in)
{ // {{{
if (in.empty())
return;
// Perform the IO in another OS thread.
hpx::get_thread_pool("io_pool")->get_io_service().post(
boost::bind(&output_stream::call_write_sync, this, in,
threads::get_self_id()));
// Sleep until the worker thread wakes us up.
this_thread::suspend(threads::suspended, "output_stream::write_sync");
} // }}}
void output_stream::call_write_async(detail::buffer in)
{ // {{{
// Perform the IO operation.
in.write(write_f, mtx_);
} // }}}