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mirror of https://github.com/Llewellynvdm/conky.git synced 2024-12-25 12:10:03 +00:00

Fix for initial spike on program start plus documentation as much as needed to implement that fix

Also some end of line white spaces were automatically removed by SciTE.
This commit is contained in:
mxmlnkn 2015-12-10 21:13:29 +01:00
parent 3723edb4e9
commit d8f75860b2
4 changed files with 107 additions and 38 deletions

View File

@ -281,7 +281,7 @@ static void print_version(void)
#endif /* BUILD_MYSQL */
#ifdef BUILD_WEATHER_METAR
<< _(" * Weather (METAR)\n")
#endif /* BUILD_WEATHER_METAR */
#endif /* BUILD_WEATHER_METAR */
#ifdef BUILD_WEATHER_XOAP
<< _(" * Weather (XOAP)\n")
#endif /* BUILD_WEATHER_XOAP */
@ -2007,7 +2007,7 @@ static void clear_text(int exposures)
/* there is some extra space for borders and outlines */
int border_total = get_border_total();
XClearArea(display, window.window, text_start_x - border_total,
XClearArea(display, window.window, text_start_x - border_total,
text_start_y - border_total, text_width + 2*border_total,
text_height + 2*border_total, exposures ? True : 0);
}
@ -2142,7 +2142,7 @@ static void main_loop(void)
XFreePixmap(display, window.back_buffer);
window.back_buffer = XCreatePixmap(display,
window.window, window.width, window.height, DefaultDepth(display, screen));
if (window.back_buffer != None) {
window.drawable = window.back_buffer;
} else {
@ -2721,7 +2721,7 @@ void load_config_file()
l.replace(-2);
if(l.type(-1) != lua::TSTRING)
throw conky::error(_("missing text block in configuration"));
/* Remove \\-\n. */
l.gsub(l.tocstring(-1), "\\\n", "");
l.replace(-2);
@ -2878,6 +2878,7 @@ void set_current_config() {
void initialisation(int argc, char **argv) {
struct sigaction act, oact;
clear_net_stats();
set_default_configurations();
set_current_config();
@ -3063,7 +3064,6 @@ int main(int argc, char **argv)
argc_copy = argc;
argv_copy = argv;
g_signal_pending = 0;
clear_net_stats();
#ifdef BUILD_CURL
struct curl_global_initializer {

View File

@ -367,10 +367,24 @@ void print_gateway_ip(struct text_object *obj, char *p, int p_max_size)
snprintf(p, p_max_size, "%s", gw_info.ip);
}
/**
* Parses information from /proc/net/dev and stores them in ???
*
* For the output format of /proc/net/dev @see http://linux.die.net/man/5/proc
*
* @return always returns 0. May change in the future, e.g. returning non zero
* if some error happened
**/
int update_net_stats(void)
{
FILE *net_dev_fp;
static int rep = 0;
/* variably to notify the parts averaging the download speed, that this
* is the first call ever to this function. This variable can't be used
* to decide if this is the first time an interface was parsed as there
* are many interfaces, which can be activated and deactivated at arbitrary
* times */
static char first = 1;
// FIXME: arbitrary size chosen to keep code simple.
@ -394,12 +408,15 @@ int update_net_stats(void)
return 0;
}
/* open file and ignore first two lines */
/* open file /proc/net/dev. If not something went wrong, clear all
* network statistics */
if (!(net_dev_fp = open_file("/proc/net/dev", &rep))) {
clear_net_stats();
return 0;
}
/* ignore first two header lines in file /proc/net/dev. If somethings
* goes wrong, e.g. end of file reached, quit.
* (Why isn't clear_net_stats called for this case ??? */
if (!fgets(buf, 255, net_dev_fp) || /* garbage */
!fgets(buf, 255, net_dev_fp)) { /* garbage (field names) */
fclose(net_dev_fp);
@ -413,48 +430,68 @@ int update_net_stats(void)
char temp_addr[18];
long long r, t, last_recv, last_trans;
/* quit only after all non-header lines from /proc/net/dev parsed */
if (fgets(buf, 255, net_dev_fp) == NULL) {
break;
}
p = buf;
while (isspace((int) *p)) {
/* change char * p to first non-space character, which is the beginning
* of the interface name */
while (*p != '\0' && isspace((int) *p)) {
p++;
}
s = p;
while (*p && *p != ':') {
/* increment p until the end of the interface name has been reached */
while (*p != '\0' && *p != ':') {
p++;
}
if (*p == '\0') {
continue;
}
/* replace ':' with '\0' in output of /proc/net/dev */
*p = '\0';
p++;
/* get pointer to interface statistics with the interface name in s */
ns = get_net_stat(s, NULL, NULL);
ns->up = 1;
memset(&(ns->addr.sa_data), 0, 14);
memset(ns->addrs, 0, 17 * MAX_NET_INTERFACES + 1); /* Up to 17 chars per ip, max MAX_NET_INTERFACES interfaces. Nasty memory usage... */
last_recv = ns->recv;
last_trans = ns->trans;
/* bytes packets errs drop fifo frame compressed multicast|bytes ... */
sscanf(p, "%lld %*d %*d %*d %*d %*d %*d %*d %lld",
&r, &t);
/* if recv or trans is less than last time, an overflow happened */
/* if the interface is parsed the first time, then set recv and trans
* to currently received, meaning the change in network traffic is 0 */
if (ns->last_read_recv == -1) {
ns->recv = r;
first = 1;
}
if (ns->last_read_trans == -1) {
ns->trans = t;
first = 1;
}
/* move current traffic statistic to last thereby obsoleting the
* current statistic */
last_recv = ns->recv;
last_trans = ns->trans;
/* If recv or trans is less than last time, an overflow happened.
* In that case set the last traffic to the current one, don't set
* it to 0, else a spike in the download and upload speed will occur! */
if (r < ns->last_read_recv) {
last_recv = 0;
last_recv = r;
} else {
ns->recv += (r - ns->last_read_recv);
}
ns->last_read_recv = r;
if (t < ns->last_read_trans) {
last_trans = 0;
last_trans = t;
} else {
ns->trans += (t - ns->last_read_trans);
}
@ -490,19 +527,19 @@ int update_net_stats(void)
close((long) i);
free(conf.ifc_buf);
/*** end ip addr patch ***/
if (!first) {
/* calculate speeds */
ns->net_rec[0] = (ns->recv - last_recv) / delta;
/* calculate instantenous speeds */
ns->net_rec [0] = (ns->recv - last_recv ) / delta;
ns->net_trans[0] = (ns->trans - last_trans) / delta;
}
curtmp1 = 0;
curtmp2 = 0;
// get an average
/* get an average over the last speed samples */
int samples = net_avg_samples.get(*state);
/* is OpenMP actually useful here? How large is samples? > 1000 ? */
#ifdef HAVE_OPENMP
#pragma omp parallel for reduction(+:curtmp1, curtmp2) schedule(dynamic,10)
#endif /* HAVE_OPENMP */

View File

@ -58,9 +58,19 @@ conky::lua_traits<if_up_strictness_>::Map conky::lua_traits<if_up_strictness_>::
static conky::simple_config_setting<if_up_strictness_> if_up_strictness("if_up_strictness",
IFUP_UP, true);
/**
* global array of structs containing network statistics for each interface
**/
struct net_stat netstats[MAX_NET_INTERFACES];
/**
* Returns pointer to specified interface in netstats array.
* If not found then add the specified interface to the array.
* The added interface will have all its members initialized to 0,
* because clear_net_stats() is called from main() in conky.cc!
*
* @param[in] dev device / interface name. Silently ignores char * == NULL
**/
struct net_stat *get_net_stat(const char *dev, void *free_at_crash1, void *free_at_crash2)
{
unsigned int i;
@ -80,6 +90,10 @@ struct net_stat *get_net_stat(const char *dev, void *free_at_crash1, void *free_
for (i = 0; i < MAX_NET_INTERFACES; i++) {
if (netstats[i].dev == 0) {
netstats[i].dev = strndup(dev, text_buffer_size.get(*state));
/* initialize last_read_recv and last_read_trans to -1 denoting
* that they were never read before */
netstats[i].last_read_recv = -1;
netstats[i].last_read_trans = -1;
return &netstats[i];
}
}
@ -415,6 +429,11 @@ double wireless_link_barval(struct text_object *obj)
}
#endif /* BUILD_WLAN */
/**
* Clears the global array of net_stat structs which contains networks
* statistics for every interface.
**/
void clear_net_stats(void)
{
#ifdef BUILD_IPV6

View File

@ -43,30 +43,43 @@ struct v6addr {
#endif /* BUILD_IPV6 */
struct net_stat {
char *dev;
int up;
long long last_read_recv, last_read_trans;
long long recv, trans;
double recv_speed, trans_speed;
struct sockaddr addr;
/* interface name, e.g. wlan0, eth0, ... */
char *dev;
/* set to 1, if interface is up */
int up;
/* network traffic read on last call in order to calculate how much
* was received or transmitted since the last call. contains -1 if
* it was never read before. in bytes */
long long last_read_recv, last_read_trans;
/* total received and transmitted data statistics in bytes */
long long recv, trans;
/* averaged network speed in bytes / second */
double recv_speed, trans_speed;
/* struct with at least the member sa_data which is a const * containing
* the socket address.
* @see http://pubs.opengroup.org/onlinepubs/7908799/xns/syssocket.h.html */
struct sockaddr addr;
#ifdef BUILD_IPV6
struct v6addr *v6addrs;
struct v6addr *v6addrs;
bool v6show_nm;
bool v6show_sc;
#endif /* BUILD_IPV6 */
#if defined(__linux__)
char addrs[17 * MAX_NET_INTERFACES + 1];
char addrs[17 * MAX_NET_INTERFACES + 1];
#endif /* __linux__ */
double net_rec[15], net_trans[15];
// wireless extensions
char essid[32];
int channel;
char freq[16];
char bitrate[16];
char mode[16];
int link_qual;
int link_qual_max;
char ap[18];
/* network speeds between two conky calls in bytes per second.
* An average over these samples is calculated in recv_speed and
* trans_speed */
double net_rec[15], net_trans[15];
// wireless extensions
char essid[32];
int channel;
char freq[16];
char bitrate[16];
char mode[16];
int link_qual;
int link_qual_max;
char ap[18];
};
extern struct net_stat netstats[];