Files
nethogs/refresh.cpp
2016-03-03 21:34:25 +08:00

142 lines
3.5 KiB
C++

/*
* refresh.cpp
*
* Copyright (c) 2004 Arnout Engelen
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
#include <iostream>
#include <csignal>
#include <unistd.h>
#include "process.h"
extern bool needrefresh;
extern unsigned refreshdelay;
extern timeval curtime;
void alarm_cb (int /*i*/)
{
needrefresh = true;
//cout << "Setting needrefresh\n";
signal (SIGALRM, &alarm_cb);
alarm(refreshdelay);
}
float tomb (u_int32_t bytes)
{
return ((double)bytes) / 1024 / 1024;
}
float tokb (u_int32_t bytes)
{
return ((double)bytes) / 1024;
}
float tokbps (u_int32_t bytes)
{
return (((double)bytes) / PERIOD) / 1024;
}
/** Get the kb/s values for this process */
void getkbps (Process * curproc, float * recvd, float * sent)
{
u_int32_t sum_sent = 0,
sum_recv = 0;
/* walk though all this process's connections, and sum
* them up */
ConnList * curconn = curproc->connections;
ConnList * previous = NULL;
while (curconn != NULL)
{
if (curconn->getVal()->getLastPacket() <= curtime.tv_sec - CONNTIMEOUT)
{
/* stalled connection, remove. */
ConnList * todelete = curconn;
Connection * conn_todelete = curconn->getVal();
curconn = curconn->getNext();
if (todelete == curproc->connections)
curproc->connections = curconn;
if (previous != NULL)
previous->setNext(curconn);
delete (todelete);
delete (conn_todelete);
}
else
{
u_int32_t sent = 0, recv = 0;
curconn->getVal()->sumanddel(curtime, &recv, &sent);
sum_sent += sent;
sum_recv += recv;
previous = curconn;
curconn = curconn->getNext();
}
}
*recvd = tokbps(sum_recv);
*sent = tokbps(sum_sent);
}
/** get total values for this process */
void gettotal(Process * curproc, u_int32_t * recvd, u_int32_t * sent)
{
u_int32_t sum_sent = 0,
sum_recv = 0;
ConnList * curconn = curproc->connections;
while (curconn != NULL)
{
Connection * conn = curconn->getVal();
sum_sent += conn->sumSent;
sum_recv += conn->sumRecv;
curconn = curconn->getNext();
}
//std::cout << "Sum sent: " << sum_sent << std::endl;
//std::cout << "Sum recv: " << sum_recv << std::endl;
*recvd = sum_recv;
*sent = sum_sent;
}
void gettotalmb(Process * curproc, float * recvd, float * sent)
{
u_int32_t sum_sent = 0,
sum_recv = 0;
gettotal(curproc, &sum_recv, &sum_sent);
*recvd = tomb(sum_recv);
*sent = tomb(sum_sent);
}
/** get total values for this process */
void gettotalkb(Process * curproc, float * recvd, float * sent)
{
u_int32_t sum_sent = 0,
sum_recv = 0;
gettotal(curproc, &sum_recv, &sum_sent);
*recvd = tokb(sum_recv);
*sent = tokb(sum_sent);
}
void gettotalb(Process * curproc, float * recvd, float * sent)
{
u_int32_t sum_sent = 0,
sum_recv = 0;
gettotal(curproc, &sum_recv, &sum_sent);
//std::cout << "Total sent: " << sum_sent << std::endl;
*sent = sum_sent;
*recvd = sum_recv;
}