mirror of
https://github.com/OpenVPN/openvpn3.git
synced 2024-09-20 12:12:15 +02:00
37d848ca20
This makes it easier to scan log files for exceptions. Signed-off-by: James Yonan <james@openvpn.net>
114 lines
3.0 KiB
C++
114 lines
3.0 KiB
C++
// OpenVPN -- An application to securely tunnel IP networks
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// over a single port, with support for SSL/TLS-based
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// session authentication and key exchange,
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// packet encryption, packet authentication, and
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// packet compression.
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//
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// Copyright (C) 2012-2017 OpenVPN Inc.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License Version 3
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// as published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program in the COPYING file.
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// If not, see <http://www.gnu.org/licenses/>.
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#ifndef OPENVPN_COMMON_ACTIONTHREAD_H
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#define OPENVPN_COMMON_ACTIONTHREAD_H
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#include <thread>
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#include <openvpn/common/rc.hpp>
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#include <openvpn/common/action.hpp>
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#include <openvpn/log/logthread.hpp>
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namespace openvpn {
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class ActionThread : public RC<thread_safe_refcount>
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{
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public:
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typedef RCPtr<ActionThread> Ptr;
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struct Notify
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{
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virtual void action_thread_finished(const ActionThread* self, bool status) = 0;
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};
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ActionThread(openvpn_io::io_context& io_context_arg,
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const ActionList::Ptr& action_list,
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Notify* completion_handler_arg)
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: io_context(io_context_arg),
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thread(nullptr),
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actions(action_list),
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completion_handler(completion_handler_arg)
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{
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if (actions)
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thread = new std::thread(&ActionThread::thread_func, this);
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}
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void stop(const bool halt)
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{
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if (thread)
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{
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if (halt)
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actions->halt();
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thread->join();
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delete thread;
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thread = nullptr;
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// Necessary because no guarantee that completion_handler
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// obj will remain in scope during io_context.post delay.
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completion_handler = nullptr;
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}
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}
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virtual ~ActionThread()
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{
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stop(true);
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}
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private:
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void completion_post(bool status)
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{
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Notify* n = completion_handler;
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completion_handler = nullptr;
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if (n)
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n->action_thread_finished(this, status);
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}
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void thread_func()
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{
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Log::Context logctx(logwrap);
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bool status = false;
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try {
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OPENVPN_LOG("START THREAD...");
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status = actions->execute();
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OPENVPN_LOG("END THREAD");
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}
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catch (const std::exception& e)
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{
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OPENVPN_LOG("ActionThread exception: " << e.what());
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}
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openvpn_io::post(io_context, [self=Ptr(this), status]()
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{
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self->completion_post(status);
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});
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}
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openvpn_io::io_context& io_context;
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std::thread* thread;
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ActionList::Ptr actions; // actions to execute in child thread
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Notify* completion_handler; // completion handler
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Log::Context::Wrapper logwrap; // used to carry forward the log context from parent thread
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};
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}
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#endif
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