aboutsummaryrefslogtreecommitdiffstats
path: root/linux/HugePageMeter.c
diff options
context:
space:
mode:
Diffstat (limited to 'linux/HugePageMeter.c')
-rw-r--r--linux/HugePageMeter.c106
1 files changed, 106 insertions, 0 deletions
diff --git a/linux/HugePageMeter.c b/linux/HugePageMeter.c
new file mode 100644
index 0000000..8c637fd
--- /dev/null
+++ b/linux/HugePageMeter.c
@@ -0,0 +1,106 @@
+/*
+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 "linux/HugePageMeter.h"
+
+#include <assert.h>
+#include <math.h>
+#include <stddef.h>
+
+#include "CRT.h"
+#include "Macros.h"
+#include "Object.h"
+#include "ProcessList.h"
+#include "RichString.h"
+#include "linux/LinuxProcessList.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 LinuxProcessList* lpl = (const LinuxProcessList*) this->pl;
+ this->total = lpl->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 = lpl->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 (isnan(this->values[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"
+};

© 2014-2024 Faster IT GmbH | imprint | privacy policy