bool io_service_pool::run(bool join_threads)
{
boost::lock_guard<boost::mutex> l(mtx_);
// Create a pool of threads to run all of the io_services.
if (!threads_.empty()) // should be called only once
{
HPX_ASSERT(pool_size_ == io_services_.size());
HPX_ASSERT(threads_.size() == io_services_.size());
HPX_ASSERT(work_.size() == io_services_.size());
if (join_threads)
join_locked();
return false;
}
// Give all the io_services work to do so that their run() functions
// will not exit until they are explicitly stopped.
if (!io_services_.empty())
clear_locked();
if (io_services_.empty())
{
for (std::size_t i = 0; i < pool_size_; ++i)
{
io_service_ptr io_service(new boost::asio::io_service);
work_ptr work(new boost::asio::io_service::work(*io_service));
io_services_.push_back(io_service);
work_.push_back(work);
}
}
for (std::size_t i = 0; i < pool_size_; ++i)
{
boost::shared_ptr<boost::thread> thread(new boost::thread(
boost::bind(&io_service_pool::thread_run, this, i)));
threads_.push_back(thread);
}
next_io_service_ = 0;
stopped_ = false;
HPX_ASSERT(pool_size_ == io_services_.size());
HPX_ASSERT(threads_.size() == io_services_.size());
HPX_ASSERT(work_.size() == io_services_.size());
if (join_threads)
join_locked();
return true;
}
io_service_pool::~io_service_pool()
{
boost::lock_guard<boost::mutex> l(mtx_);
stop_locked();
join_locked();
clear_locked();
}
io_service_pool::~io_service_pool()
{
boost::mutex::scoped_lock l(mtx_);
stop_locked();
join_locked();
clear_locked();
}
bool io_service_pool::run_locked(std::size_t num_threads, bool join_threads,
compat::barrier* startup)
{
if (io_services_.empty())
{
pool_size_ = num_threads;
for (std::size_t i = 0; i < num_threads; ++i)
{
io_services_.emplace_back(new boost::asio::io_service);
work_.emplace_back(initialize_work(*io_services_[i]));
}
}
for (std::size_t i = 0; i < num_threads; ++i)
{
compat::thread t(
&io_service_pool::thread_run, this, i, startup);
threads_.emplace_back(std::move(t));
}
next_io_service_ = 0;
stopped_ = false;
HPX_ASSERT(pool_size_ == io_services_.size());
HPX_ASSERT(threads_.size() == io_services_.size());
HPX_ASSERT(work_.size() == io_services_.size());
if (join_threads)
join_locked();
return true;
}
bool io_service_pool::run(std::size_t num_threads, bool join_threads,
compat::barrier* startup)
{
std::lock_guard<compat::mutex> l(mtx_);
// Create a pool of threads to run all of the io_services.
if (!threads_.empty()) // should be called only once
{
HPX_ASSERT(pool_size_ == io_services_.size());
HPX_ASSERT(threads_.size() == io_services_.size());
HPX_ASSERT(work_.size() == io_services_.size());
if (join_threads)
join_locked();
return false;
}
// Give all the io_services work to do so that their run() functions
// will not exit until they are explicitly stopped.
if (!io_services_.empty())
clear_locked();
return run_locked(num_threads, join_threads, startup);
}
io_service_pool::~io_service_pool()
{
std::lock_guard<compat::mutex> l(mtx_);
stop_locked();
join_locked();
clear_locked();
}
void io_service_pool::join()
{
boost::lock_guard<boost::mutex> l(mtx_);
join_locked();
}
void io_service_pool::join()
{
boost::mutex::scoped_lock l(mtx_);
join_locked();
}
void io_service_pool::join()
{
std::lock_guard<compat::mutex> l(mtx_);
join_locked();
}
