Calculate CPU averages on Darwin (See #295).

CPUMeter.c

@@ -18,6 +18,19 @@ in the source distribution for its full text.
 
 /*{
 #include "Meter.h"
+
+typedef enum {
+   CPU_METER_NICE = 0,
+   CPU_METER_NORMAL = 1,
+   CPU_METER_KERNEL = 2,
+   CPU_METER_IRQ = 3,
+   CPU_METER_SOFTIRQ = 4,
+   CPU_METER_STEAL = 5,
+   CPU_METER_GUEST = 6,
+   CPU_METER_IOWAIT = 7,
+   CPU_METER_ITEMCOUNT = 8, // number of entries in this enum
+} CPUMeterValues;
+
 }*/
 
 int CPUMeter_attributes[] = {
@@ -48,6 +61,7 @@ static void CPUMeter_setValues(Meter* this, char* buffer, int size) {
       snprintf(buffer, size, "absent");
       return;
    }
+   memset(this->values, 0, sizeof(double) * CPU_METER_ITEMCOUNT);
    double percent = Platform_setCPUValues(this, cpu);
    snprintf(buffer, size, "%5.1f%%", percent);
 }
@@ -60,44 +74,44 @@ static void CPUMeter_display(Object* cast, RichString* out) {
       RichString_append(out, CRT_colors[METER_TEXT], "absent");
       return;
    }
-   sprintf(buffer, "%5.1f%% ", this->values[1]);
+   sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_NORMAL]);
    RichString_append(out, CRT_colors[METER_TEXT], ":");
    RichString_append(out, CRT_colors[CPU_NORMAL], buffer);
    if (this->pl->settings->detailedCPUTime) {
-      sprintf(buffer, "%5.1f%% ", this->values[2]);
+      sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_KERNEL]);
       RichString_append(out, CRT_colors[METER_TEXT], "sy:");
       RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[0]);
+      sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_NICE]);
       RichString_append(out, CRT_colors[METER_TEXT], "ni:");
       RichString_append(out, CRT_colors[CPU_NICE_TEXT], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[3]);
+      sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_IRQ]);
       RichString_append(out, CRT_colors[METER_TEXT], "hi:");
       RichString_append(out, CRT_colors[CPU_IRQ], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[4]);
+      sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_SOFTIRQ]);
       RichString_append(out, CRT_colors[METER_TEXT], "si:");
       RichString_append(out, CRT_colors[CPU_SOFTIRQ], buffer);
-      if (this->values[5]) {
-         sprintf(buffer, "%5.1f%% ", this->values[5]);
+      if (this->values[CPU_METER_STEAL]) {
+         sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_STEAL]);
          RichString_append(out, CRT_colors[METER_TEXT], "st:");
          RichString_append(out, CRT_colors[CPU_STEAL], buffer);
       }
-      if (this->values[6]) {
-         sprintf(buffer, "%5.1f%% ", this->values[6]);
+      if (this->values[CPU_METER_GUEST]) {
+         sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_GUEST]);
          RichString_append(out, CRT_colors[METER_TEXT], "gu:");
          RichString_append(out, CRT_colors[CPU_GUEST], buffer);
       }
-      sprintf(buffer, "%5.1f%% ", this->values[7]);
+      sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_IOWAIT]);
       RichString_append(out, CRT_colors[METER_TEXT], "wa:");
       RichString_append(out, CRT_colors[CPU_IOWAIT], buffer);
    } else {
-      sprintf(buffer, "%5.1f%% ", this->values[2]);
+      sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_KERNEL]);
       RichString_append(out, CRT_colors[METER_TEXT], "sys:");
       RichString_append(out, CRT_colors[CPU_KERNEL], buffer);
-      sprintf(buffer, "%5.1f%% ", this->values[0]);
+      sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_NICE]);
       RichString_append(out, CRT_colors[METER_TEXT], "low:");
       RichString_append(out, CRT_colors[CPU_NICE_TEXT], buffer);
-      if (this->values[3]) {
-         sprintf(buffer, "%5.1f%% ", this->values[3]);
+      if (this->values[CPU_METER_IRQ]) {
+         sprintf(buffer, "%5.1f%% ", this->values[CPU_METER_IRQ]);
          RichString_append(out, CRT_colors[METER_TEXT], "vir:");
          RichString_append(out, CRT_colors[CPU_GUEST], buffer);
       }
@@ -203,7 +217,7 @@ MeterClass CPUMeter_class = {
    },
    .setValues = CPUMeter_setValues, 
    .defaultMode = BAR_METERMODE,
-   .maxItems = 8,
+   .maxItems = CPU_METER_ITEMCOUNT,
    .total = 100.0,
    .attributes = CPUMeter_attributes, 
    .name = "CPU",

CPUMeter.h

@@ -11,6 +11,19 @@ in the source distribution for its full text.
 
 #include "Meter.h"
 
+typedef enum {
+   CPU_METER_NICE = 0,
+   CPU_METER_NORMAL = 1,
+   CPU_METER_KERNEL = 2,
+   CPU_METER_IRQ = 3,
+   CPU_METER_SOFTIRQ = 4,
+   CPU_METER_STEAL = 5,
+   CPU_METER_GUEST = 6,
+   CPU_METER_IOWAIT = 7,
+   CPU_METER_ITEMCOUNT = 8, // number of entries in this enum
+} CPUMeterValues;
+
+
 extern int CPUMeter_attributes[];
 
 #ifndef MIN

darwin/Platform.c

@@ -21,6 +21,7 @@ in the source distribution for its full text.
 
 /*{
 #include "Action.h"
+#include "CPUMeter.h"
 #include "BatteryMeter.h"
 #include "DarwinProcess.h"
 }*/
@@ -163,11 +164,27 @@ ProcessPidColumn Process_pidColumns[] = {
    { .id = 0, .label = NULL },
 };
 
+static double Platform_setCPUAverageValues(Meter* mtr) {
+   DarwinProcessList *dpl = (DarwinProcessList *)mtr->pl;
+   int cpus = dpl->super.cpuCount;
+   double sumNice, sumNormal, sumKernel, sumPercent;
+   for (int i = 1; i <= cpus; i++) {
+      sumPercent += Platform_setCPUValues(mtr, i);
+      sumNice    += mtr->values[CPU_METER_NICE];
+      sumNormal  += mtr->values[CPU_METER_NORMAL];
+      sumKernel  += mtr->values[CPU_METER_KERNEL];
+   }
+   mtr->values[CPU_METER_NICE]   = sumNice   / cpus;
+   mtr->values[CPU_METER_NORMAL] = sumNormal / cpus;
+   mtr->values[CPU_METER_KERNEL] = sumKernel / cpus;
+   return sumPercent / cpus;
+}
+
 double Platform_setCPUValues(Meter* mtr, int cpu) {
-   /* All just from CPUMeter.c */
-   static const int CPU_METER_NICE = 0;
-   static const int CPU_METER_NORMAL = 1;
-   static const int CPU_METER_KERNEL = 2;
+
+   if (cpu == 0) {
+      return Platform_setCPUAverageValues(mtr);
+   }
 
    DarwinProcessList *dpl = (DarwinProcessList *)mtr->pl;
    processor_cpu_load_info_t prev = &dpl->prev_load[cpu-1];

linux/Platform.c

@@ -162,15 +162,15 @@ double Platform_setCPUValues(Meter* this, int cpu) {
    double total = (double) ( cpuData->totalPeriod == 0 ? 1 : cpuData->totalPeriod);
    double percent;
    double* v = this->values;
-   v[0] = cpuData->nicePeriod / total * 100.0;
-   v[1] = cpuData->userPeriod / total * 100.0;
+   v[CPU_METER_NICE] = cpuData->nicePeriod / total * 100.0;
+   v[CPU_METER_NORMAL] = cpuData->userPeriod / total * 100.0;
    if (this->pl->settings->detailedCPUTime) {
-      v[2] = cpuData->systemPeriod / total * 100.0;
-      v[3] = cpuData->irqPeriod / total * 100.0;
-      v[4] = cpuData->softIrqPeriod / total * 100.0;
-      v[5] = cpuData->stealPeriod / total * 100.0;
-      v[6] = cpuData->guestPeriod / total * 100.0;
-      v[7] = cpuData->ioWaitPeriod / total * 100.0;
+      v[CPU_METER_KERNEL]  = cpuData->systemPeriod / total * 100.0;
+      v[CPU_METER_IRQ]     = cpuData->irqPeriod / total * 100.0;
+      v[CPU_METER_SOFTIRQ] = cpuData->softIrqPeriod / total * 100.0;
+      v[CPU_METER_STEAL]   = cpuData->stealPeriod / total * 100.0;
+      v[CPU_METER_GUEST]   = cpuData->guestPeriod / total * 100.0;
+      v[CPU_METER_IOWAIT]  = cpuData->ioWaitPeriod / total * 100.0;
       Meter_setItems(this, 8);
       if (this->pl->settings->accountGuestInCPUMeter) {
          percent = v[0]+v[1]+v[2]+v[3]+v[4]+v[5]+v[6];