htop/SwapMeter.c

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/*
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htop - SwapMeter.c
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(C) 2004-2011 Hisham H. Muhammad
Released under the GNU GPLv2+, see the COPYING file
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in the source distribution for its full text.
*/
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#include "config.h" // IWYU pragma: keep
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#include "SwapMeter.h"
#include <math.h>
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#include <stddef.h>
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#include "CRT.h"
#include "Object.h"
#include "Platform.h"
#include "RichString.h"
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static const int SwapMeter_attributes[] = {
SWAP,
SWAP_CACHE
};
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static void SwapMeter_updateValues(Meter* this) {
char* buffer = this->txtBuffer;
size_t size = sizeof(this->txtBuffer);
int written;
this->values[1] = NAN; /* 'cached' not present on all platforms */
Platform_setSwapValues(this);
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);
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}
static void SwapMeter_display(const Object* cast, RichString* out) {
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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[METER_VALUE], buffer);
if (!isnan(this->values[1])) {
Meter_humanUnit(buffer, this->values[1], sizeof(buffer));
RichString_appendAscii(out, CRT_colors[METER_TEXT], " cache:");
RichString_appendAscii(out, CRT_colors[SWAP_CACHE], buffer);
}
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}
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const MeterClass SwapMeter_class = {
.super = {
.extends = Class(Meter),
.delete = Meter_delete,
.display = SwapMeter_display,
},
.updateValues = SwapMeter_updateValues,
.defaultMode = BAR_METERMODE,
.maxItems = 2,
.total = 100.0,
.attributes = SwapMeter_attributes,
.name = "Swap",
.uiName = "Swap",
.caption = "Swp"
};