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Diffstat (limited to 'osdep/BackgroundResolver.hpp')
| -rw-r--r-- | osdep/BackgroundResolver.hpp | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/osdep/BackgroundResolver.hpp b/osdep/BackgroundResolver.hpp deleted file mode 100644 index ba895487..00000000 --- a/osdep/BackgroundResolver.hpp +++ /dev/null @@ -1,118 +0,0 @@ -/* - * ZeroTier One - Network Virtualization Everywhere - * Copyright (C) 2011-2016 ZeroTier, Inc. https://www.zerotier.com/ - * - * 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, see <http://www.gnu.org/licenses/>. - */ - -#ifndef ZT_BACKGROUNDRESOLVER_HPP -#define ZT_BACKGROUNDRESOLVER_HPP - -#include <vector> -#include <string> - -#include "../node/Constants.hpp" -#include "../node/Mutex.hpp" -#include "../node/InetAddress.hpp" -#include "../node/NonCopyable.hpp" -#include "Thread.hpp" - -namespace ZeroTier { - -class BackgroundResolverJob; - -/** - * A simple background resolver - */ -class BackgroundResolver : NonCopyable -{ - friend class BackgroundResolverJob; - -public: - /** - * Construct a new resolver - * - * resolveNow() must be called to actually initiate background resolution. - * - * @param name Name to resolve - */ - BackgroundResolver(const char *name); - - ~BackgroundResolver(); - - /** - * @return Most recent resolver results or empty vector if none - */ - std::vector<InetAddress> get() const; - - /** - * Launch a background resolve job now - * - * If a resolve job is currently in progress, it is aborted and another - * job is started. - * - * Note that jobs can't actually be aborted due to the limitations of the - * ancient synchronous OS resolver APIs. As a result, in progress jobs - * that are aborted are simply abandoned. Don't call this too frequently - * or background threads might pile up. - * - * @param callback Callback function to receive notification or NULL if none - * @praam arg Second argument to callback function - */ - void resolveNow(void (*callback)(BackgroundResolver *,void *) = 0,void *arg = 0); - - /** - * Abort (abandon) any current resolve jobs - */ - void abort(); - - /** - * @return True if a background job is in progress - */ - inline bool running() const - { - Mutex::Lock _l(_lock); - return (_job != (BackgroundResolverJob *)0); - } - - /** - * Wait for pending job to complete (if any) - */ - inline void wait() const - { - Thread t; - { - Mutex::Lock _l(_lock); - if (!_job) - return; - t = _jobThread; - } - Thread::join(t); - } - -private: - void _postResult(const std::vector<InetAddress> &ips); - - std::string _name; - BackgroundResolverJob *_job; - Thread _jobThread; - void (*_callback)(BackgroundResolver *,void *); - void *_arg; - std::vector<InetAddress> _ips; - Mutex _lock; -}; - -} // namespace ZeroTier - -#endif |