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https://github.com/libretro/scummvm.git
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98150beb38
ConnectionManager now storages Request * (not generates ids for it), Requests have control on their RequestState, RequestIdPair is now called Response and storages Request * with some response together. All related classes are changed to use it in more clean and understandable way. Request, RequestState and Response are carefully commented/documented.
132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
/* ScummVM - Graphic Adventure Engine
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*
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* ScummVM is the legal property of its developers, whose names
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* are too numerous to list here. Please refer to the COPYRIGHT
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* file distributed with this source distribution.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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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 General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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*/
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#define FORBIDDEN_SYMBOL_ALLOW_ALL
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#include "backends/networking/curl/connectionmanager.h"
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#include "backends/networking/curl/networkreadstream.h"
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#include "common/debug.h"
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#include "common/system.h"
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#include "common/timer.h"
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#include <curl/curl.h>
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using Common::Singleton;
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DECLARE_SINGLETON(Networking::ConnectionManager);
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namespace Networking {
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ConnectionManager::ConnectionManager(): _multi(0), _timerStarted(false) {
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curl_global_init(CURL_GLOBAL_ALL);
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_multi = curl_multi_init();
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}
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ConnectionManager::~ConnectionManager() {
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curl_multi_cleanup(_multi);
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curl_global_cleanup();
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}
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void ConnectionManager::registerEasyHandle(CURL *easy) {
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curl_multi_add_handle(_multi, easy);
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}
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Request *ConnectionManager::addRequest(Request *request) {
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_requests.push_back(request);
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if (!_timerStarted) startTimer();
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return request;
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}
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//private goes here:
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void connectionsThread(void *ignored) {
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ConnMan.handle();
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}
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void ConnectionManager::startTimer(int interval) {
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Common::TimerManager *manager = g_system->getTimerManager();
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if (manager->installTimerProc(connectionsThread, interval, 0, "Networking::ConnectionManager's Timer")) {
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_timerStarted = true;
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} else {
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warning("Failed to install Networking::ConnectionManager's timer");
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}
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}
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void ConnectionManager::stopTimer() {
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debug("timer stopped");
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Common::TimerManager *manager = g_system->getTimerManager();
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manager->removeTimerProc(connectionsThread);
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_timerStarted = false;
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}
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void ConnectionManager::handle() {
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//TODO: lock mutex here (in case another handle() would be called before this one ends)
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interateRequests();
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processTransfers();
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//TODO: unlock mutex here
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}
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void ConnectionManager::interateRequests() {
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//call handle() of all running requests (so they can do their work)
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debug("handling %d request(s)", _requests.size());
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for (Common::Array<Request *>::iterator i = _requests.begin(); i != _requests.end();) {
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Request *request = *i;
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if (!request || request->state() == FINISHED) {
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delete (*i);
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_requests.erase(i);
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continue;
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}
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if (request) {
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if (request->state() == PROCESSING) request->handle();
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else if (request->state() == RETRY) request->handleRetry();
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}
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++i;
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}
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if (_requests.empty()) stopTimer();
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}
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void ConnectionManager::processTransfers() {
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//check libcurl's transfers and notify requests of messages from queue (transfer completion or failure)
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int transfersRunning;
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curl_multi_perform(_multi, &transfersRunning);
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int messagesInQueue;
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CURLMsg *curlMsg;
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while ((curlMsg = curl_multi_info_read(_multi, &messagesInQueue))) {
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CURL *easyHandle = curlMsg->easy_handle;
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NetworkReadStream *stream;
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curl_easy_getinfo(easyHandle, CURLINFO_PRIVATE, &stream);
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if (stream) stream->finished();
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if (curlMsg->msg == CURLMSG_DONE) {
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debug("ConnectionManager: SUCCESS (%d - %s)", curlMsg->data.result, curl_easy_strerror(curlMsg->data.result));
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} else {
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debug("ConnectionManager: FAILURE (CURLMsg (%d))", curlMsg->msg);
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}
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curl_multi_remove_handle(_multi, easyHandle);
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}
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}
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} //end of namespace Cloud
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