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Rework CPU counting

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Currently htop does not support offline CPUs and hot-swapping, e.g. via
    echo 0 > /sys/devices/system/cpu/cpu2/online

Split the current single cpuCount variable into activeCPUs and
existingCPUs.

Supersedes: #650
Related: #580
This commit is contained in:
Christian Göttsche
2021-06-12 18:17:28 +02:00
committed by Benny Baumann
parent c9abd788b1
commit 41af31be7f
28 changed files with 276 additions and 148 deletions
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8
darwin/DarwinProcessList.c
View File

@ -134,7 +134,9 @@ ProcessList* ProcessList_new(UsersTable* usersTable, Hashtable* dynamicMeters, H
ProcessList_init(&this->super, Class(DarwinProcess), usersTable, dynamicMeters, pidMatchList, userId);
/* Initialize the CPU information */
this->super.cpuCount = ProcessList_allocateCPULoadInfo(&this->prev_load);
this->super.activeCPUs = ProcessList_allocateCPULoadInfo(&this->prev_load);
// TODO: support offline CPUs and hot swapping
this->super.existingCPUs = this->super.activeCPUs;
ProcessList_getHostInfo(&this->host_info);
ProcessList_allocateCPULoadInfo(&this->curr_load);
@ -184,13 +186,13 @@ void ProcessList_goThroughEntries(ProcessList* super, bool pauseProcessUpdate) {
/* Get the time difference */
dpl->global_diff = 0;
for (unsigned int i = 0; i < dpl->super.cpuCount; ++i) {
for (unsigned int i = 0; i < dpl->super.existingCPUs; ++i) {
for (size_t j = 0; j < CPU_STATE_MAX; ++j) {
dpl->global_diff += dpl->curr_load[i].cpu_ticks[j] - dpl->prev_load[i].cpu_ticks[j];
}
}
const double time_interval = ticksToNanoseconds(dpl->global_diff) / (double) dpl->super.cpuCount;
const double time_interval = ticksToNanoseconds(dpl->global_diff) / (double) dpl->super.activeCPUs;
/* Clear the thread counts */
super->kernelThreads = 0;

12
darwin/Platform.c
View File

@ -186,21 +186,21 @@ int Platform_getMaxPid() {
static double Platform_setCPUAverageValues(Meter* mtr) {
const ProcessList* dpl = mtr->pl;
unsigned int cpus = dpl->cpuCount;
unsigned int activeCPUs = dpl->activeCPUs;
double sumNice = 0.0;
double sumNormal = 0.0;
double sumKernel = 0.0;
double sumPercent = 0.0;
for (unsigned int i = 1; i <= cpus; i++) {
for (unsigned int i = 1; i <= dpl->existingCPUs; 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;
mtr->values[CPU_METER_NICE] = sumNice / activeCPUs;
mtr->values[CPU_METER_NORMAL] = sumNormal / activeCPUs;
mtr->values[CPU_METER_KERNEL] = sumKernel / activeCPUs;
return sumPercent / activeCPUs;
}
double Platform_setCPUValues(Meter* mtr, unsigned int cpu) {