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/************************************************************************
*
* Copyright (C) 2018-2024 IRCAD France
* Copyright (C) 2018-2020 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "signal_gate.hpp"
#include <core/com/signal.hxx>
#include <core/com/slots.hxx>
#include <data/object.hpp>
#include <future>
#include <regex>
namespace sight::module::sync
{
// Public signal
const core::com::signals::key_t signal_gate::ALL_RECEIVED_SIG = "all_received";
//-----------------------------------------------------------------------------
signal_gate::signal_gate()
{
new_signal<all_received_signal_t>(ALL_RECEIVED_SIG);
}
//-----------------------------------------------------------------------------
signal_gate::~signal_gate()
= default;
//-----------------------------------------------------------------------------
void signal_gate::configuring()
{
}
//------------------------------------------------------------------------------
void signal_gate::starting()
{
service::config_t config = this->get_config();
const std::regex re("(.*)/(.*)");
std::smatch match;
auto signals_cfg = config.equal_range("signal");
for(auto it_cfg = signals_cfg.first ; it_cfg != signals_cfg.second ; ++it_cfg)
{
const std::string& signal = it_cfg->second.get_value<std::string>();
if(std::regex_match(signal, match, re))
{
SIGHT_ASSERT("Wrong value for attribute src: " + signal, match.size() >= 3);
std::string uid;
std::string signal_key;
uid.assign(match[1].first, match[1].second);
signal_key.assign(match[2].first, match[2].second);
if(core::id::exist(uid))
{
core::object::sptr obj = core::id::get_object(uid);
core::com::has_signals::sptr signals_holder = std::dynamic_pointer_cast<core::com::has_signals>(obj);
SIGHT_ASSERT("Object with id " << uid << " is not a has_slots", signals_holder);
const std::size_t index = m_flags.size();
m_flags.push_back(false);
// Create a slot to our callback with a bound index to identify it
std::function<void()> task([this, index](auto&& ...){received(index);});
auto slot = core::com::new_slot(task);
slot->set_worker(this->worker());
// Connect the configured signal to this slot
auto sig = signals_holder->signal(signal_key);
SIGHT_ASSERT("Object with id " + uid + " does not have a signalKey '" + signal_key + "'", sig);
sig->connect(slot);
m_waiting_slots.push_back(slot);
}
}
}
}
//-----------------------------------------------------------------------------
void signal_gate::stopping()
{
m_waiting_slots.clear();
m_flags.clear();
}
//-----------------------------------------------------------------------------
void signal_gate::updating()
{
}
//------------------------------------------------------------------------------
void signal_gate::received(std::size_t _index)
{
SIGHT_DEBUG("'" << this->get_id() << "' received a signal at position : " << _index);
SIGHT_ASSERT("Could not find a signal at index " << _index, _index < m_flags.size());
m_flags[_index] = true;
bool all_received = true;
for(bool received : m_flags)
{
all_received &= received;
}
if(all_received)
{
// Reset all flags before sending the signal
std::fill(m_flags.begin(), m_flags.end(), false);
SIGHT_DEBUG("'" << this->get_id() << "' received all signals, sending 'allReceived' now.");
auto sig = this->signal<all_received_signal_t>(ALL_RECEIVED_SIG);
sig->async_emit();
}
}
//-----------------------------------------------------------------------------
} // namespace sight::module::sync
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