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/*
htop - MemoryMeter.c
(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2+, see the COPYING file
in the source distribution for its full text.
*/
#include "config.h" // IWYU pragma: keep
#include "MemoryMeter.h"
#include <assert.h>
#include <math.h>
#include <stddef.h>
#include "CRT.h"
#include "Macros.h"
#include "Object.h"
#include "Platform.h"
#include "RichString.h"
static const int MemoryMeter_attributes[] = {
MEMORY_USED,
MEMORY_SHARED,
MEMORY_COMPRESSED,
MEMORY_BUFFERS,
MEMORY_CACHE
};
static void MemoryMeter_updateValues(Meter* this) {
char* buffer = this->txtBuffer;
size_t size = sizeof(this->txtBuffer);
int written;
/* shared, compressed and available memory are not supported on all platforms */
this->values[MEMORY_METER_SHARED] = NAN;
this->values[MEMORY_METER_COMPRESSED] = NAN;
this->values[MEMORY_METER_AVAILABLE] = NAN;
Platform_setMemoryValues(this);
/* Do not print available memory in bar mode */
static_assert(MEMORY_METER_AVAILABLE + 1 == MEMORY_METER_ITEMCOUNT,
"MEMORY_METER_AVAILABLE is not the last item in MemoryMeterValues");
this->curItems = MEMORY_METER_AVAILABLE;
/* we actually want to show "used + shared + compressed" */
double used = this->values[MEMORY_METER_USED];
if (isPositive(this->values[MEMORY_METER_SHARED]))
used += this->values[MEMORY_METER_SHARED];
if (isPositive(this->values[MEMORY_METER_COMPRESSED]))
used += this->values[MEMORY_METER_COMPRESSED];
written = Meter_humanUnit(buffer, used, size);
METER_BUFFER_CHECK(buffer, size, written);
METER_BUFFER_APPEND_CHR(buffer, size, '/');
Meter_humanUnit(buffer, this->total, size);
}
static void MemoryMeter_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);
Meter_humanUnit(buffer, this->values[MEMORY_METER_USED], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " used:");
RichString_appendAscii(out, CRT_colors[MEMORY_USED], buffer);
/* shared memory is not supported on all platforms */
if (isNonnegative(this->values[MEMORY_METER_SHARED])) {
Meter_humanUnit(buffer, this->values[MEMORY_METER_SHARED], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " shared:");
RichString_appendAscii(out, CRT_colors[MEMORY_SHARED], buffer);
}
/* compressed memory is not supported on all platforms */
if (isNonnegative(this->values[MEMORY_METER_COMPRESSED])) {
Meter_humanUnit(buffer, this->values[MEMORY_METER_COMPRESSED], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " compressed:");
RichString_appendAscii(out, CRT_colors[MEMORY_COMPRESSED], buffer);
}
Meter_humanUnit(buffer, this->values[MEMORY_METER_BUFFERS], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " buffers:");
RichString_appendAscii(out, CRT_colors[MEMORY_BUFFERS_TEXT], buffer);
Meter_humanUnit(buffer, this->values[MEMORY_METER_CACHE], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " cache:");
RichString_appendAscii(out, CRT_colors[MEMORY_CACHE], buffer);
/* available memory is not supported on all platforms */
if (isNonnegative(this->values[MEMORY_METER_AVAILABLE])) {
Meter_humanUnit(buffer, this->values[MEMORY_METER_AVAILABLE], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " available:");
RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
}
}
const MeterClass MemoryMeter_class = {
.super = {
.extends = Class(Meter),
.delete = Meter_delete,
.display = MemoryMeter_display,
},
.updateValues = MemoryMeter_updateValues,
.defaultMode = BAR_METERMODE,
.maxItems = MEMORY_METER_ITEMCOUNT,
.total = 100.0,
.attributes = MemoryMeter_attributes,
.name = "Memory",
.uiName = "Memory",
.caption = "Mem"
};
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