htop/linux/Platform.c
Christian Hesse 08829cbc3b fix compiler warnings
gcc gives warnings like this:

warning: ignoring return value of ‘fscanf’, declared with attribute
warn_unused_result

Assign value to a variable, cast to (void) to discard it.
2015-05-15 11:33:25 +02:00

168 lines
4.8 KiB
C

/*
htop - linux/Platform.c
(C) 2014 Hisham H. Muhammad
Released under the GNU GPL, see the COPYING file
in the source distribution for its full text.
*/
#include "Platform.h"
#include "IOPriority.h"
#include "IOPriorityPanel.h"
#include "LinuxProcess.h"
#include "LinuxProcessList.h"
#include "Battery.h"
#include "Meter.h"
#include "CPUMeter.h"
#include "MemoryMeter.h"
#include "SwapMeter.h"
#include "TasksMeter.h"
#include "LoadAverageMeter.h"
#include "UptimeMeter.h"
#include "ClockMeter.h"
#include "HostnameMeter.h"
#include "LinuxProcess.h"
#include <math.h>
#include <assert.h>
/*{
#include "Action.h"
#include "MainPanel.h"
#include "BatteryMeter.h"
#include "LinuxProcess.h"
}*/
ProcessField Platform_defaultFields[] = { PID, USER, PRIORITY, NICE, M_SIZE, M_RESIDENT, M_SHARE, STATE, PERCENT_CPU, PERCENT_MEM, TIME, COMM, 0 };
//static ProcessField defaultIoFields[] = { PID, IO_PRIORITY, USER, IO_READ_RATE, IO_WRITE_RATE, IO_RATE, COMM, 0 };
int Platform_numberOfFields = LAST_PROCESSFIELD;
static Htop_Reaction Platform_actionSetIOPriority(State* st) {
Panel* panel = st->panel;
LinuxProcess* p = (LinuxProcess*) Panel_getSelected(panel);
if (!p) return HTOP_OK;
IOPriority ioprio = p->ioPriority;
Panel* ioprioPanel = IOPriorityPanel_new(ioprio);
void* set = Action_pickFromVector(st, ioprioPanel, 21);
if (set) {
IOPriority ioprio = IOPriorityPanel_getIOPriority(ioprioPanel);
bool ok = MainPanel_foreachProcess((MainPanel*)panel, (MainPanel_ForeachProcessFn) LinuxProcess_setIOPriority, (size_t) ioprio, NULL);
if (!ok)
beep();
}
Panel_delete((Object*)ioprioPanel);
return HTOP_REFRESH | HTOP_REDRAW_BAR | HTOP_UPDATE_PANELHDR;
}
void Platform_setBindings(Htop_Action* keys) {
keys['i'] = Platform_actionSetIOPriority;
}
MeterClass* Platform_meterTypes[] = {
&CPUMeter_class,
&ClockMeter_class,
&LoadAverageMeter_class,
&LoadMeter_class,
&MemoryMeter_class,
&SwapMeter_class,
&TasksMeter_class,
&UptimeMeter_class,
&BatteryMeter_class,
&HostnameMeter_class,
&AllCPUsMeter_class,
&AllCPUs2Meter_class,
&LeftCPUsMeter_class,
&RightCPUsMeter_class,
&LeftCPUs2Meter_class,
&RightCPUs2Meter_class,
&BlankMeter_class,
NULL
};
int Platform_getUptime() {
double uptime = 0;
FILE* fd = fopen(PROCDIR "/uptime", "r");
if (fd) {
int n = fscanf(fd, "%64lf", &uptime);
fclose(fd);
if (n <= 0) return 0;
}
return (int) floor(uptime);
}
void Platform_getLoadAverage(double* one, double* five, double* fifteen) {
int activeProcs, totalProcs, lastProc;
*one = 0; *five = 0; *fifteen = 0;
FILE *fd = fopen(PROCDIR "/loadavg", "r");
if (fd) {
int total = fscanf(fd, "%32lf %32lf %32lf %32d/%32d %32d", one, five, fifteen,
&activeProcs, &totalProcs, &lastProc);
(void) total;
assert(total == 6);
fclose(fd);
}
}
int Platform_getMaxPid() {
FILE* file = fopen(PROCDIR "/sys/kernel/pid_max", "r");
if (!file) return -1;
int maxPid = 4194303;
int match = fscanf(file, "%32d", &maxPid);
(void) match;
fclose(file);
return maxPid;
}
double Platform_setCPUValues(Meter* this, int cpu) {
LinuxProcessList* pl = (LinuxProcessList*) this->pl;
CPUData* cpuData = &(pl->cpus[cpu]);
double total = (double) ( cpuData->totalPeriod == 0 ? 1 : cpuData->totalPeriod);
double percent;
double* v = this->values;
v[0] = cpuData->nicePeriod / total * 100.0;
v[1] = cpuData->userPeriod / total * 100.0;
if (this->pl->settings->detailedCPUTime) {
v[2] = cpuData->systemPeriod / total * 100.0;
v[3] = cpuData->irqPeriod / total * 100.0;
v[4] = cpuData->softIrqPeriod / total * 100.0;
v[5] = cpuData->stealPeriod / total * 100.0;
v[6] = cpuData->guestPeriod / total * 100.0;
v[7] = cpuData->ioWaitPeriod / total * 100.0;
Meter_setItems(this, 8);
if (this->pl->settings->accountGuestInCPUMeter) {
percent = v[0]+v[1]+v[2]+v[3]+v[4]+v[5]+v[6];
} else {
percent = v[0]+v[1]+v[2]+v[3]+v[4];
}
} else {
v[2] = cpuData->systemAllPeriod / total * 100.0;
v[3] = (cpuData->stealPeriod + cpuData->guestPeriod) / total * 100.0;
Meter_setItems(this, 4);
percent = v[0]+v[1]+v[2]+v[3];
}
percent = MIN(100.0, MAX(0.0, percent));
if (isnan(percent)) percent = 0.0;
return percent;
}
void Platform_setMemoryValues(Meter* this) {
ProcessList* pl = (ProcessList*) this->pl;
long int usedMem = pl->usedMem;
long int buffersMem = pl->buffersMem;
long int cachedMem = pl->cachedMem;
usedMem -= buffersMem + cachedMem;
this->total = pl->totalMem;
this->values[0] = usedMem;
this->values[1] = buffersMem;
this->values[2] = cachedMem;
}
void Platform_setSwapValues(Meter* this) {
ProcessList* pl = (ProcessList*) this->pl;
this->total = pl->totalSwap;
this->values[0] = pl->usedSwap;
}