htop/MemoryMeter.c
2021-10-12 17:46:44 +11:00

97 lines
2.8 KiB
C

/*
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 "MemoryMeter.h"
#include <math.h>
#include <stddef.h>
#include "CRT.h"
#include "Object.h"
#include "Platform.h"
#include "RichString.h"
static const int MemoryMeter_attributes[] = {
MEMORY_USED,
MEMORY_BUFFERS,
MEMORY_SHARED,
MEMORY_CACHE
};
static void MemoryMeter_updateValues(Meter* this) {
char* buffer = this->txtBuffer;
size_t size = sizeof(this->txtBuffer);
int written;
/* shared and available memory are not supported on all platforms */
this->values[2] = NAN;
this->values[4] = NAN;
Platform_setMemoryValues(this);
/* Do not print available memory in bar mode */
this->curItems = 4;
written = Meter_humanUnit(buffer, this->values[0], 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[0], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " used:");
RichString_appendAscii(out, CRT_colors[MEMORY_USED], buffer);
Meter_humanUnit(buffer, this->values[1], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " buffers:");
RichString_appendAscii(out, CRT_colors[MEMORY_BUFFERS_TEXT], buffer);
/* shared memory is not supported on all platforms */
if (!isnan(this->values[2])) {
Meter_humanUnit(buffer, this->values[2], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " shared:");
RichString_appendAscii(out, CRT_colors[MEMORY_SHARED], buffer);
}
Meter_humanUnit(buffer, this->values[3], 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 (!isnan(this->values[4])) {
Meter_humanUnit(buffer, this->values[4], 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 = 5,
.total = 100.0,
.attributes = MemoryMeter_attributes,
.name = "Memory",
.uiName = "Memory",
.caption = "Mem"
};