htop/LoadAverageMeter.c
Hisham Muhammad 09e241fb12 Security review: check results of snprintf.
Calls marked with xSnprintf shouldn't fail.
Abort program cleanly if any of them does.
2017-07-27 16:07:50 -03:00

88 lines
2.6 KiB
C

/*
htop - LoadAverageMeter.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "LoadAverageMeter.h"
#include "CRT.h"
#include "Platform.h"
/*{
#include "Meter.h"
}*/
int LoadAverageMeter_attributes[] = {
LOAD_AVERAGE_ONE, LOAD_AVERAGE_FIVE, LOAD_AVERAGE_FIFTEEN
};
int LoadMeter_attributes[] = { LOAD };
static void LoadAverageMeter_updateValues(Meter* this, char* buffer, int size) {
Platform_getLoadAverage(&this->values[0], &this->values[1], &this->values[2]);
xSnprintf(buffer, size, "%.2f/%.2f/%.2f", this->values[0], this->values[1], this->values[2]);
}
static void LoadAverageMeter_display(Object* cast, RichString* out) {
Meter* this = (Meter*)cast;
char buffer[20];
xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[0]);
RichString_write(out, CRT_colors[LOAD_AVERAGE_ONE], buffer);
xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[1]);
RichString_append(out, CRT_colors[LOAD_AVERAGE_FIVE], buffer);
xSnprintf(buffer, sizeof(buffer), "%.2f ", this->values[2]);
RichString_append(out, CRT_colors[LOAD_AVERAGE_FIFTEEN], buffer);
}
static void LoadMeter_updateValues(Meter* this, char* buffer, int size) {
double five, fifteen;
Platform_getLoadAverage(&this->values[0], &five, &fifteen);
if (this->values[0] > this->total) {
this->total = this->values[0];
}
xSnprintf(buffer, size, "%.2f", this->values[0]);
}
static void LoadMeter_display(Object* cast, RichString* out) {
Meter* this = (Meter*)cast;
char buffer[20];
xSnprintf(buffer, sizeof(buffer), "%.2f ", ((Meter*)this)->values[0]);
RichString_write(out, CRT_colors[LOAD], buffer);
}
MeterClass LoadAverageMeter_class = {
.super = {
.extends = Class(Meter),
.delete = Meter_delete,
.display = LoadAverageMeter_display,
},
.updateValues = LoadAverageMeter_updateValues,
.defaultMode = TEXT_METERMODE,
.maxItems = 3,
.total = 100.0,
.attributes = LoadAverageMeter_attributes,
.name = "LoadAverage",
.uiName = "Load average",
.description = "Load averages: 1 minute, 5 minutes, 15 minutes",
.caption = "Load average: "
};
MeterClass LoadMeter_class = {
.super = {
.extends = Class(Meter),
.delete = Meter_delete,
.display = LoadMeter_display,
},
.updateValues = LoadMeter_updateValues,
.defaultMode = TEXT_METERMODE,
.maxItems = 1,
.total = 100.0,
.attributes = LoadMeter_attributes,
.name = "Load",
.uiName = "Load",
.description = "Load: average of ready processes in the last minute",
.caption = "Load: "
};