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/* <!-- copyright */
/*
* aria2 - a simple utility for downloading files faster
*
* Copyright (C) 2006 Tatsuhiro Tsujikawa
*
* 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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/* copyright --> */
#include "DownloadEngine.h"
#include "Util.h"
#include "LogFactory.h"
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <algorithm>
using namespace std;
DownloadEngine::DownloadEngine():noWait(false), segmentMan(NULL) {
logger = LogFactory::getInstance();
}
DownloadEngine::~DownloadEngine() {
assert(rsockets.empty());
assert(wsockets.empty());
}
void DownloadEngine::run() {
initStatistics();
while(!commands.empty()) {
int max = commands.size();
for(int i = 0; i < max; i++) {
Command* com = commands.front();
commands.pop();
if(com->execute()) {
delete(com);
}
}
afterEachIteration();
shortSleep();
if(!noWait && !commands.empty()) {
waitData();
}
noWait = false;
calculateStatistics();
}
onEndOfRun();
}
void DownloadEngine::shortSleep() const {
struct timeval tv;
tv.tv_sec = 0;
tv.tv_usec = 1000;
fd_set rfds;
FD_ZERO(&rfds);
select(0, &rfds, NULL, NULL, &tv);
}
void DownloadEngine::waitData() {
fd_set rfds;
fd_set wfds;
struct timeval tv;
int retval;
FD_ZERO(&rfds);
FD_ZERO(&wfds);
int max = 0;
for(Sockets::iterator itr = rsockets.begin(); itr != rsockets.end(); itr++) {
FD_SET((*itr)->getSockfd(), &rfds);
if(max < (*itr)->getSockfd()) {
max = (*itr)->getSockfd();
}
}
for(Sockets::iterator itr = wsockets.begin(); itr != wsockets.end(); itr++) {
FD_SET((*itr)->getSockfd(), &wfds);
if(max < (*itr)->getSockfd()) {
max = (*itr)->getSockfd();
}
}
tv.tv_sec = 1;
tv.tv_usec = 0;
retval = select(max+1, &rfds, /*&wfds*/NULL, NULL, &tv);
}
bool DownloadEngine::addSocket(Sockets& sockets, Socket* socket) {
Sockets::iterator itr = find(sockets.begin(),
sockets.end(),
socket);
if(itr == sockets.end()) {
sockets.push_back(socket);
return true;
} else {
return false;
}
}
bool DownloadEngine::deleteSocket(Sockets& sockets, Socket* socket) {
Sockets::iterator itr = find(sockets.begin(),
sockets.end(),
socket);
if(itr != sockets.end()) {
sockets.erase(itr);
return true;
} else {
return false;
}
}
bool DownloadEngine::addSocketForReadCheck(Socket* socket) {
return addSocket(rsockets, socket);
}
bool DownloadEngine::deleteSocketForReadCheck(Socket* socket) {
return deleteSocket(rsockets , socket);
}
bool DownloadEngine::addSocketForWriteCheck(Socket* socket) {
return addSocket(wsockets, socket);
}
bool DownloadEngine::deleteSocketForWriteCheck(Socket* socket) {
return deleteSocket(wsockets, socket);
}
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