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/*
htop - HugePageMeter.c
(C) 2021 htop dev team
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "linux/HugePageMeter.h"
#include <assert.h>
#include <math.h>
#include <stddef.h>
#include "CRT.h"
#include "Machine.h"
#include "Macros.h"
#include "Object.h"
#include "RichString.h"
#include "linux/LinuxMachine.h"
static const char* HugePageMeter_active_labels[4] = { NULL, NULL, NULL, NULL };
static const int HugePageMeter_attributes[] = {
HUGEPAGE_1,
HUGEPAGE_2,
HUGEPAGE_3,
HUGEPAGE_4,
};
static const char* const HugePageMeter_labels[] = {
" 64K:", " 128K:", " 256K:", " 512K:",
" 1M:", " 2M:", " 4M:", " 8M:", " 16M:", " 32M:", " 64M:", " 128M:", " 256M:", " 512M:",
" 1G:", " 2G:", " 4G:", " 8G:", " 16G:", " 32G:", " 64G:", " 128G:", " 256G:", " 512G:",
};
static void HugePageMeter_updateValues(Meter* this) {
assert(ARRAYSIZE(HugePageMeter_labels) == HTOP_HUGEPAGE_COUNT);
char* buffer = this->txtBuffer;
size_t size = sizeof(this->txtBuffer);
int written;
memory_t usedTotal = 0;
unsigned nextUsed = 0;
const LinuxMachine* host = (const LinuxMachine*) this->host;
this->total = host->totalHugePageMem;
this->values[0] = 0;
HugePageMeter_active_labels[0] = " used:";
for (unsigned i = 1; i < ARRAYSIZE(HugePageMeter_active_labels); i++) {
this->values[i] = NAN;
HugePageMeter_active_labels[i] = NULL;
}
for (unsigned i = 0; i < HTOP_HUGEPAGE_COUNT; i++) {
memory_t value = host->usedHugePageMem[i];
if (value != MEMORY_MAX) {
this->values[nextUsed] = value;
usedTotal += value;
HugePageMeter_active_labels[nextUsed] = HugePageMeter_labels[i];
if (++nextUsed == ARRAYSIZE(HugePageMeter_active_labels)) {
break;
}
}
}
written = Meter_humanUnit(buffer, usedTotal, size);
METER_BUFFER_CHECK(buffer, size, written);
METER_BUFFER_APPEND_CHR(buffer, size, '/');
Meter_humanUnit(buffer, this->total, size);
}
static void HugePageMeter_display(const Object* cast, RichString* out) {
char buffer[50];
const Meter* this = (const Meter*)cast;
RichString_writeAscii(out, CRT_colors[METER_TEXT], ":");
Meter_humanUnit(buffer, this->total, sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
for (unsigned i = 0; i < ARRAYSIZE(HugePageMeter_active_labels); i++) {
if (!HugePageMeter_active_labels[i]) {
break;
}
RichString_appendAscii(out, CRT_colors[METER_TEXT], HugePageMeter_active_labels[i]);
Meter_humanUnit(buffer, this->values[i], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[HUGEPAGE_1 + i], buffer);
}
}
const MeterClass HugePageMeter_class = {
.super = {
.extends = Class(Meter),
.delete = Meter_delete,
.display = HugePageMeter_display,
},
.updateValues = HugePageMeter_updateValues,
.defaultMode = BAR_METERMODE,
.maxItems = ARRAYSIZE(HugePageMeter_active_labels),
.total = 100.0,
.attributes = HugePageMeter_attributes,
.name = "HugePages",
.uiName = "HugePages",
.caption = "HP"
};
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