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// Copyright (C) 2022-2023 Joel Rosdahl and other contributors
//
// See doc/AUTHORS.adoc for a complete list of contributors.
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 3 of the License, or (at your option)
// any later version.
//
// This program 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 General Public License for
// more details.
//
// You should have received a copy of the GNU General Public License along with
// this program; if not, write to the Free Software Foundation, Inc., 51
// Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#include "LongLivedLockFileManager.hpp"
#include <Logging.hpp>
#include <Util.hpp>
#include <util/file.hpp>
#include <chrono>
#ifndef _WIN32
std::chrono::milliseconds k_keep_alive_interval{500};
#endif
namespace util {
LongLivedLockFileManager::~LongLivedLockFileManager()
{
#ifndef _WIN32
if (m_thread.joinable()) {
LOG_RAW("Stopping keep-alive thread");
{
std::unique_lock<std::mutex> lock(m_mutex);
m_stop = true;
}
m_stop_condition.notify_one();
m_thread.join();
LOG_RAW("Stopped keep-alive thread");
}
#endif
}
void
LongLivedLockFileManager::register_alive_file(
[[maybe_unused]] const std::string& path)
{
#ifndef _WIN32
std::unique_lock<std::mutex> lock(m_mutex);
if (!m_thread.joinable()) {
start_thread();
}
m_alive_files.insert(path);
#endif
}
void
LongLivedLockFileManager::deregister_alive_file(
[[maybe_unused]] const std::string& path)
{
#ifndef _WIN32
std::unique_lock<std::mutex> lock(m_mutex);
m_alive_files.erase(path);
#endif
}
#ifndef _WIN32
void
LongLivedLockFileManager::start_thread()
{
LOG_RAW("Starting keep-alive thread");
m_thread = std::thread([&] {
auto awake_time = std::chrono::steady_clock::now();
while (true) {
std::unique_lock<std::mutex> lock(m_mutex);
m_stop_condition.wait_until(lock, awake_time, [this] { return m_stop; });
if (m_stop) {
return;
}
for (const auto& alive_file : m_alive_files) {
util::set_timestamps(alive_file);
}
awake_time += k_keep_alive_interval;
}
});
LOG_RAW("Started keep-alive thread");
}
#endif
} // namespace util
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