mirror of https://github.com/htop-dev/htop.git
119 lines
4.0 KiB
C
119 lines
4.0 KiB
C
/*
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htop - MemoryMeter.c
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(C) 2004-2011 Hisham H. Muhammad
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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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*/
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#include "config.h" // IWYU pragma: keep
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#include "MemoryMeter.h"
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#include <assert.h>
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#include <math.h>
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#include <stddef.h>
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#include "CRT.h"
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#include "Macros.h"
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#include "Object.h"
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#include "Platform.h"
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#include "RichString.h"
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static const int MemoryMeter_attributes[] = {
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MEMORY_USED,
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MEMORY_SHARED,
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MEMORY_COMPRESSED,
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MEMORY_BUFFERS,
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MEMORY_CACHE
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};
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static void MemoryMeter_updateValues(Meter* this) {
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char* buffer = this->txtBuffer;
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size_t size = sizeof(this->txtBuffer);
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int written;
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/* shared, compressed and available memory are not supported on all platforms */
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this->values[MEMORY_METER_SHARED] = NAN;
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this->values[MEMORY_METER_COMPRESSED] = NAN;
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this->values[MEMORY_METER_AVAILABLE] = NAN;
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Platform_setMemoryValues(this);
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/* Do not print available memory in bar mode */
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static_assert(MEMORY_METER_AVAILABLE + 1 == MEMORY_METER_ITEMCOUNT,
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"MEMORY_METER_AVAILABLE is not the last item in MemoryMeterValues");
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this->curItems = MEMORY_METER_AVAILABLE;
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/* we actually want to show "used + shared + compressed" */
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double used = this->values[MEMORY_METER_USED];
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if (isPositive(this->values[MEMORY_METER_SHARED]))
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used += this->values[MEMORY_METER_SHARED];
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if (isPositive(this->values[MEMORY_METER_COMPRESSED]))
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used += this->values[MEMORY_METER_COMPRESSED];
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written = Meter_humanUnit(buffer, used, size);
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METER_BUFFER_CHECK(buffer, size, written);
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METER_BUFFER_APPEND_CHR(buffer, size, '/');
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Meter_humanUnit(buffer, this->total, size);
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}
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static void MemoryMeter_display(const Object* cast, RichString* out) {
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char buffer[50];
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const Meter* this = (const Meter*)cast;
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RichString_writeAscii(out, CRT_colors[METER_TEXT], ":");
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Meter_humanUnit(buffer, this->total, sizeof(buffer));
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RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
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Meter_humanUnit(buffer, this->values[MEMORY_METER_USED], sizeof(buffer));
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RichString_appendAscii(out, CRT_colors[METER_TEXT], " used:");
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RichString_appendAscii(out, CRT_colors[MEMORY_USED], buffer);
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/* shared memory is not supported on all platforms */
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if (isNonnegative(this->values[MEMORY_METER_SHARED])) {
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Meter_humanUnit(buffer, this->values[MEMORY_METER_SHARED], sizeof(buffer));
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RichString_appendAscii(out, CRT_colors[METER_TEXT], " shared:");
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RichString_appendAscii(out, CRT_colors[MEMORY_SHARED], buffer);
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}
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/* compressed memory is not supported on all platforms */
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if (isNonnegative(this->values[MEMORY_METER_COMPRESSED])) {
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Meter_humanUnit(buffer, this->values[MEMORY_METER_COMPRESSED], sizeof(buffer));
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RichString_appendAscii(out, CRT_colors[METER_TEXT], " compressed:");
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RichString_appendAscii(out, CRT_colors[MEMORY_COMPRESSED], buffer);
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}
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Meter_humanUnit(buffer, this->values[MEMORY_METER_BUFFERS], sizeof(buffer));
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RichString_appendAscii(out, CRT_colors[METER_TEXT], " buffers:");
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RichString_appendAscii(out, CRT_colors[MEMORY_BUFFERS_TEXT], buffer);
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Meter_humanUnit(buffer, this->values[MEMORY_METER_CACHE], sizeof(buffer));
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RichString_appendAscii(out, CRT_colors[METER_TEXT], " cache:");
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RichString_appendAscii(out, CRT_colors[MEMORY_CACHE], buffer);
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/* available memory is not supported on all platforms */
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if (isNonnegative(this->values[MEMORY_METER_AVAILABLE])) {
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Meter_humanUnit(buffer, this->values[MEMORY_METER_AVAILABLE], sizeof(buffer));
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RichString_appendAscii(out, CRT_colors[METER_TEXT], " available:");
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RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
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}
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}
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const MeterClass MemoryMeter_class = {
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.super = {
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.extends = Class(Meter),
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.delete = Meter_delete,
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.display = MemoryMeter_display,
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},
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.updateValues = MemoryMeter_updateValues,
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.defaultMode = BAR_METERMODE,
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.maxItems = MEMORY_METER_ITEMCOUNT,
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.total = 100.0,
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.attributes = MemoryMeter_attributes,
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.name = "Memory",
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.uiName = "Memory",
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.caption = "Mem"
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};
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