1 files changed, 87 insertions, 0 deletions
diff --git a/zfs/ZfsCompressedArcMeter.c b/zfs/ZfsCompressedArcMeter.c
new file mode 100644
index 0000000..2e49473
--- /dev/null
+++ b/zfs/ZfsCompressedArcMeter.c
@@ -0,0 +1,87 @@
+/*
+htop - ZfsCompressedArcMeter.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 "zfs/ZfsCompressedArcMeter.h"
+
+#include <stddef.h>
+
+#include "CRT.h"
+#include "Meter.h"
+#include "Object.h"
+#include "Platform.h"
+#include "RichString.h"
+#include "XUtils.h"
+#include "zfs/ZfsArcStats.h"
+
+
+static const int ZfsCompressedArcMeter_attributes[] = {
+   ZFS_COMPRESSED
+};
+
+void ZfsCompressedArcMeter_readStats(Meter* this, const ZfsArcStats* stats) {
+   if ( stats->isCompressed ) {
+      this->total = stats->uncompressed;
+      this->values[0] = stats->compressed;
+   } else {
+      // For uncompressed ARC, report 1:1 ratio
+      this->total = stats->size;
+      this->values[0] = stats->size;
+   }
+}
+
+static int ZfsCompressedArcMeter_printRatioString(const Meter* this, char* buffer, size_t size) {
+   if (this->values[0] > 0) {
+      return xSnprintf(buffer, size, "%.2f:1", this->total / this->values[0]);
+   }
+
+   return xSnprintf(buffer, size, "N/A");
+}
+
+static void ZfsCompressedArcMeter_updateValues(Meter* this) {
+   Platform_setZfsCompressedArcValues(this);
+
+   ZfsCompressedArcMeter_printRatioString(this, this->txtBuffer, sizeof(this->txtBuffer));
+}
+
+static void ZfsCompressedArcMeter_display(const Object* cast, RichString* out) {
+   const Meter* this = (const Meter*)cast;
+
+   if (this->values[0] > 0) {
+      char buffer[50];
+      int len;
+
+      Meter_humanUnit(buffer, this->total, sizeof(buffer));
+      RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], " Uncompressed, ");
+      Meter_humanUnit(buffer, this->values[0], sizeof(buffer));
+      RichString_appendAscii(out, CRT_colors[METER_VALUE], buffer);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], " Compressed, ");
+      len = ZfsCompressedArcMeter_printRatioString(this, buffer, sizeof(buffer));
+      RichString_appendnAscii(out, CRT_colors[ZFS_RATIO], buffer, len);
+      RichString_appendAscii(out, CRT_colors[METER_TEXT], " Ratio");
+   } else {
+      RichString_writeAscii(out, CRT_colors[METER_TEXT], " ");
+      RichString_appendAscii(out, CRT_colors[FAILED_READ], "Compression Unavailable");
+   }
+}
+
+const MeterClass ZfsCompressedArcMeter_class = {
+   .super = {
+      .extends = Class(Meter),
+      .delete = Meter_delete,
+      .display = ZfsCompressedArcMeter_display,
+   },
+   .updateValues = ZfsCompressedArcMeter_updateValues,
+   .defaultMode = TEXT_METERMODE,
+   .maxItems = 1,
+   .total = 100.0,
+   .attributes = ZfsCompressedArcMeter_attributes,
+   .name = "ZFSCARC",
+   .uiName = "ZFS CARC",
+   .description = "ZFS CARC: Compressed ARC statistics",
+   .caption = "ARC: "
+};