/* * Copyright (C) 2008-2017 Max Kellermann * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the * distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "Init.hxx" #include "Global.hxx" #include "event/Call.hxx" #include "thread/Mutex.hxx" #include #include Mutex CurlInit::mutex; unsigned CurlInit::ref; CurlGlobal *CurlInit::instance; CurlInit::CurlInit(EventLoop &event_loop) { const std::lock_guard protect(mutex); if (++ref > 1) { assert(&event_loop == &instance->GetEventLoop()); return; } CURLcode code = curl_global_init(CURL_GLOBAL_ALL); if (code != CURLE_OK) throw std::runtime_error(curl_easy_strerror(code)); assert(instance == nullptr); instance = new CurlGlobal(event_loop); } CurlInit::~CurlInit() noexcept { const std::lock_guard protect(mutex); if (--ref > 0) return; BlockingCall(instance->GetEventLoop(), [](){ delete instance; instance = nullptr; }); curl_global_cleanup(); }