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137 lines
4.0 KiB
C++
137 lines
4.0 KiB
C++
/**
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* Copyright (c) 2021, Timothy Stack
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* * Neither the name of Timothy Stack nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ''AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @file isc.cc
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*/
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#include <algorithm>
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#include "isc.hh"
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#include "config.h"
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namespace isc {
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void
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service_base::start()
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{
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log_debug("starting service thread for: %s", this->s_name.c_str());
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this->s_thread = std::thread(&service_base::run, this);
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this->s_started = true;
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}
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void*
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service_base::run()
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{
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log_info("BEGIN isc thread: %s", this->s_name.c_str());
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while (this->s_looping) {
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mstime_t current_time = getmstime();
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auto timeout = this->compute_timeout(current_time);
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this->s_port.process_for(timeout);
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this->s_children.cleanup_children();
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this->loop_body();
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}
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if (!this->s_children.empty()) {
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log_debug("stopping children of service: %s", this->s_name.c_str());
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this->s_children.stop_children();
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}
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this->stopped();
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log_info("END isc thread: %s", this->s_name.c_str());
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return nullptr;
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}
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void
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service_base::stop()
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{
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if (this->s_started) {
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log_debug("stopping service thread: %s", this->s_name.c_str());
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if (this->s_looping) {
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this->s_looping = false;
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this->s_port.send(empty_msg());
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}
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log_debug("waiting for service thread: %s", this->s_name.c_str());
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this->s_thread.join();
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log_debug("joined service thread: %s", this->s_name.c_str());
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this->s_started = false;
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}
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}
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supervisor::supervisor(service_list servs, service_base* parent)
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: s_service_list(std::move(servs)), s_parent(parent)
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{
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for (auto& serv : this->s_service_list) {
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serv->start();
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}
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}
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supervisor::~supervisor()
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{
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this->stop_children();
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}
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void
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supervisor::stop_children()
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{
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for (auto& serv : this->s_service_list) {
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serv->stop();
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}
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this->cleanup_children();
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}
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void
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supervisor::cleanup_children()
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{
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this->s_service_list.erase(
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std::remove_if(this->s_service_list.begin(),
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this->s_service_list.end(),
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[this](auto& child) {
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if (child->is_looping()) {
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return false;
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}
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child->stop();
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if (this->s_parent != nullptr) {
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this->s_parent->child_finished(child);
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}
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return true;
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}),
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this->s_service_list.end());
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}
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void
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supervisor::add_child_service(std::shared_ptr<service_base> new_service)
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{
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this->s_service_list.emplace_back(new_service);
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new_service->start();
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}
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} // namespace isc
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