mirror of https://github.com/htop-dev/htop.git
346 lines
13 KiB
C
346 lines
13 KiB
C
/*
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htop - PCPProcessTable.c
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(C) 2014 Hisham H. Muhammad
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(C) 2020-2023 htop dev team
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(C) 2020-2023 Red Hat, Inc.
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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 "pcp/PCPMachine.h"
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#include <assert.h>
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#include <limits.h>
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#include <math.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include "Machine.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 "Settings.h"
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#include "XUtils.h"
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#include "pcp/Metric.h"
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#include "pcp/PCPProcess.h"
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static void PCPMachine_updateCPUcount(PCPMachine* this) {
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Machine* super = &this->super;
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super->activeCPUs = Metric_instanceCount(PCP_PERCPU_SYSTEM);
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unsigned int cpus = Platform_getMaxCPU();
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if (cpus == super->existingCPUs)
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return;
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if (cpus == 0)
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cpus = super->activeCPUs;
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if (cpus <= 1)
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cpus = super->activeCPUs = 1;
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super->existingCPUs = cpus;
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free(this->percpu);
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free(this->values);
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this->percpu = xCalloc(cpus, sizeof(pmAtomValue*));
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for (unsigned int i = 0; i < cpus; i++)
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this->percpu[i] = xCalloc(CPU_METRIC_COUNT, sizeof(pmAtomValue));
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this->values = xCalloc(cpus, sizeof(pmAtomValue));
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}
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static void PCPMachine_updateMemoryInfo(Machine* host) {
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unsigned long long int freeMem = 0;
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unsigned long long int swapFreeMem = 0;
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unsigned long long int sreclaimableMem = 0;
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host->totalMem = host->usedMem = host->cachedMem = 0;
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host->usedSwap = host->totalSwap = host->sharedMem = 0;
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pmAtomValue value;
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if (Metric_values(PCP_MEM_TOTAL, &value, 1, PM_TYPE_U64) != NULL)
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host->totalMem = value.ull;
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if (Metric_values(PCP_MEM_FREE, &value, 1, PM_TYPE_U64) != NULL)
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freeMem = value.ull;
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if (Metric_values(PCP_MEM_BUFFERS, &value, 1, PM_TYPE_U64) != NULL)
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host->buffersMem = value.ull;
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if (Metric_values(PCP_MEM_SRECLAIM, &value, 1, PM_TYPE_U64) != NULL)
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sreclaimableMem = value.ull;
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if (Metric_values(PCP_MEM_SHARED, &value, 1, PM_TYPE_U64) != NULL)
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host->sharedMem = value.ull;
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if (Metric_values(PCP_MEM_CACHED, &value, 1, PM_TYPE_U64) != NULL)
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host->cachedMem = value.ull + sreclaimableMem - host->sharedMem;
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const memory_t usedDiff = freeMem + host->cachedMem + sreclaimableMem + host->buffersMem;
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host->usedMem = (host->totalMem >= usedDiff) ?
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host->totalMem - usedDiff : host->totalMem - freeMem;
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if (Metric_values(PCP_MEM_AVAILABLE, &value, 1, PM_TYPE_U64) != NULL)
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host->availableMem = MINIMUM(value.ull, host->totalMem);
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else
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host->availableMem = freeMem;
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if (Metric_values(PCP_MEM_SWAPFREE, &value, 1, PM_TYPE_U64) != NULL)
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swapFreeMem = value.ull;
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if (Metric_values(PCP_MEM_SWAPTOTAL, &value, 1, PM_TYPE_U64) != NULL)
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host->totalSwap = value.ull;
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if (Metric_values(PCP_MEM_SWAPCACHED, &value, 1, PM_TYPE_U64) != NULL)
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host->cachedSwap = value.ull;
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host->usedSwap = host->totalSwap - swapFreeMem - host->cachedSwap;
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}
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/* make copies of previously sampled values to avoid overwrite */
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static inline void PCPMachine_backupCPUTime(pmAtomValue* values) {
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/* the PERIOD fields (must) mirror the TIME fields */
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for (int metric = CPU_TOTAL_TIME; metric < CPU_TOTAL_PERIOD; metric++) {
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values[metric + CPU_TOTAL_PERIOD] = values[metric];
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}
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}
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static inline void PCPMachine_saveCPUTimePeriod(pmAtomValue* values, CPUMetric previous, pmAtomValue* latest) {
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pmAtomValue* value;
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/* new value for period */
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value = &values[previous];
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if (latest->ull > value->ull)
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value->ull = latest->ull - value->ull;
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else
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value->ull = 0;
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/* new value for time */
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value = &values[previous - CPU_TOTAL_PERIOD];
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value->ull = latest->ull;
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}
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/* using copied sampled values and new values, calculate derivations */
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static void PCPMachine_deriveCPUTime(pmAtomValue* values) {
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pmAtomValue* usertime = &values[CPU_USER_TIME];
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pmAtomValue* guesttime = &values[CPU_GUEST_TIME];
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usertime->ull -= guesttime->ull;
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pmAtomValue* nicetime = &values[CPU_NICE_TIME];
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pmAtomValue* guestnicetime = &values[CPU_GUESTNICE_TIME];
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nicetime->ull -= guestnicetime->ull;
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pmAtomValue* idletime = &values[CPU_IDLE_TIME];
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pmAtomValue* iowaittime = &values[CPU_IOWAIT_TIME];
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pmAtomValue* idlealltime = &values[CPU_IDLE_ALL_TIME];
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idlealltime->ull = idletime->ull + iowaittime->ull;
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pmAtomValue* systemtime = &values[CPU_SYSTEM_TIME];
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pmAtomValue* irqtime = &values[CPU_IRQ_TIME];
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pmAtomValue* softirqtime = &values[CPU_SOFTIRQ_TIME];
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pmAtomValue* systalltime = &values[CPU_SYSTEM_ALL_TIME];
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systalltime->ull = systemtime->ull + irqtime->ull + softirqtime->ull;
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pmAtomValue* virtalltime = &values[CPU_GUEST_TIME];
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virtalltime->ull = guesttime->ull + guestnicetime->ull;
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pmAtomValue* stealtime = &values[CPU_STEAL_TIME];
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pmAtomValue* totaltime = &values[CPU_TOTAL_TIME];
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totaltime->ull = usertime->ull + nicetime->ull + systalltime->ull +
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idlealltime->ull + stealtime->ull + virtalltime->ull;
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PCPMachine_saveCPUTimePeriod(values, CPU_USER_PERIOD, usertime);
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PCPMachine_saveCPUTimePeriod(values, CPU_NICE_PERIOD, nicetime);
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PCPMachine_saveCPUTimePeriod(values, CPU_SYSTEM_PERIOD, systemtime);
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PCPMachine_saveCPUTimePeriod(values, CPU_SYSTEM_ALL_PERIOD, systalltime);
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PCPMachine_saveCPUTimePeriod(values, CPU_IDLE_ALL_PERIOD, idlealltime);
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PCPMachine_saveCPUTimePeriod(values, CPU_IDLE_PERIOD, idletime);
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PCPMachine_saveCPUTimePeriod(values, CPU_IOWAIT_PERIOD, iowaittime);
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PCPMachine_saveCPUTimePeriod(values, CPU_IRQ_PERIOD, irqtime);
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PCPMachine_saveCPUTimePeriod(values, CPU_SOFTIRQ_PERIOD, softirqtime);
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PCPMachine_saveCPUTimePeriod(values, CPU_STEAL_PERIOD, stealtime);
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PCPMachine_saveCPUTimePeriod(values, CPU_GUEST_PERIOD, virtalltime);
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PCPMachine_saveCPUTimePeriod(values, CPU_TOTAL_PERIOD, totaltime);
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}
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static void PCPMachine_updateAllCPUTime(PCPMachine* this, Metric metric, CPUMetric cpumetric)
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{
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pmAtomValue* value = &this->cpu[cpumetric];
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if (Metric_values(metric, value, 1, PM_TYPE_U64) == NULL)
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memset(value, 0, sizeof(pmAtomValue));
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}
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static void PCPMachine_updatePerCPUTime(PCPMachine* this, Metric metric, CPUMetric cpumetric)
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{
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int cpus = this->super.existingCPUs;
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if (Metric_values(metric, this->values, cpus, PM_TYPE_U64) == NULL)
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memset(this->values, 0, cpus * sizeof(pmAtomValue));
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for (int i = 0; i < cpus; i++)
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this->percpu[i][cpumetric].ull = this->values[i].ull;
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}
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static void PCPMachine_updatePerCPUReal(PCPMachine* this, Metric metric, CPUMetric cpumetric)
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{
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int cpus = this->super.existingCPUs;
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if (Metric_values(metric, this->values, cpus, PM_TYPE_DOUBLE) == NULL)
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memset(this->values, 0, cpus * sizeof(pmAtomValue));
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for (int i = 0; i < cpus; i++)
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this->percpu[i][cpumetric].d = this->values[i].d;
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}
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static inline void PCPMachine_scanZswapInfo(PCPMachine* this) {
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pmAtomValue value;
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memset(&this->zswap, 0, sizeof(ZswapStats));
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if (Metric_values(PCP_MEM_ZSWAP, &value, 1, PM_TYPE_U64))
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this->zswap.usedZswapComp = value.ull;
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if (Metric_values(PCP_MEM_ZSWAPPED, &value, 1, PM_TYPE_U64))
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this->zswap.usedZswapOrig = value.ull;
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}
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static inline void PCPMachine_scanZfsArcstats(PCPMachine* this) {
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unsigned long long int dbufSize = 0;
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unsigned long long int dnodeSize = 0;
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unsigned long long int bonusSize = 0;
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pmAtomValue value;
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memset(&this->zfs, 0, sizeof(ZfsArcStats));
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if (Metric_values(PCP_ZFS_ARC_ANON_SIZE, &value, 1, PM_TYPE_U64))
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this->zfs.anon = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_C_MIN, &value, 1, PM_TYPE_U64))
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this->zfs.min = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_C_MAX, &value, 1, PM_TYPE_U64))
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this->zfs.max = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_BONUS_SIZE, &value, 1, PM_TYPE_U64))
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bonusSize = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_DBUF_SIZE, &value, 1, PM_TYPE_U64))
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dbufSize = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_DNODE_SIZE, &value, 1, PM_TYPE_U64))
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dnodeSize = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_COMPRESSED_SIZE, &value, 1, PM_TYPE_U64))
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this->zfs.compressed = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_UNCOMPRESSED_SIZE, &value, 1, PM_TYPE_U64))
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this->zfs.uncompressed = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_HDR_SIZE, &value, 1, PM_TYPE_U64))
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this->zfs.header = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_MFU_SIZE, &value, 1, PM_TYPE_U64))
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this->zfs.MFU = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_MRU_SIZE, &value, 1, PM_TYPE_U64))
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this->zfs.MRU = value.ull / ONE_K;
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if (Metric_values(PCP_ZFS_ARC_SIZE, &value, 1, PM_TYPE_U64))
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this->zfs.size = value.ull / ONE_K;
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this->zfs.other = (dbufSize + dnodeSize + bonusSize) / ONE_K;
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this->zfs.enabled = (this->zfs.size > 0);
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this->zfs.isCompressed = (this->zfs.compressed > 0);
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}
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static void PCPMachine_scan(PCPMachine* this) {
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Machine* super = &this->super;
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PCPMachine_updateMemoryInfo(super);
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PCPMachine_updateCPUcount(this);
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PCPMachine_backupCPUTime(this->cpu);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_USER, CPU_USER_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_NICE, CPU_NICE_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_SYSTEM, CPU_SYSTEM_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_IDLE, CPU_IDLE_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_IOWAIT, CPU_IOWAIT_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_IRQ, CPU_IRQ_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_SOFTIRQ, CPU_SOFTIRQ_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_STEAL, CPU_STEAL_TIME);
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PCPMachine_updateAllCPUTime(this, PCP_CPU_GUEST, CPU_GUEST_TIME);
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PCPMachine_deriveCPUTime(this->cpu);
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for (unsigned int i = 0; i < super->existingCPUs; i++)
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PCPMachine_backupCPUTime(this->percpu[i]);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_USER, CPU_USER_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_NICE, CPU_NICE_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_SYSTEM, CPU_SYSTEM_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_IDLE, CPU_IDLE_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_IOWAIT, CPU_IOWAIT_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_IRQ, CPU_IRQ_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_SOFTIRQ, CPU_SOFTIRQ_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_STEAL, CPU_STEAL_TIME);
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PCPMachine_updatePerCPUTime(this, PCP_PERCPU_GUEST, CPU_GUEST_TIME);
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for (unsigned int i = 0; i < super->existingCPUs; i++)
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PCPMachine_deriveCPUTime(this->percpu[i]);
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if (super->settings->showCPUFrequency)
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PCPMachine_updatePerCPUReal(this, PCP_HINV_CPUCLOCK, CPU_FREQUENCY);
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PCPMachine_scanZfsArcstats(this);
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PCPMachine_scanZswapInfo(this);
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}
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void Machine_scan(Machine* super) {
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PCPMachine* host = (PCPMachine*) super;
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const Settings* settings = super->settings;
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uint32_t flags = settings->ss->flags;
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bool flagged;
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for (int metric = PCP_PROC_PID; metric < PCP_METRIC_COUNT; metric++)
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Metric_enable(metric, true);
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flagged = settings->showCPUFrequency;
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Metric_enable(PCP_HINV_CPUCLOCK, flagged);
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flagged = flags & PROCESS_FLAG_LINUX_CGROUP;
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Metric_enable(PCP_PROC_CGROUPS, flagged);
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flagged = flags & PROCESS_FLAG_LINUX_OOM;
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Metric_enable(PCP_PROC_OOMSCORE, flagged);
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flagged = flags & PROCESS_FLAG_LINUX_CTXT;
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Metric_enable(PCP_PROC_VCTXSW, flagged);
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Metric_enable(PCP_PROC_NVCTXSW, flagged);
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flagged = flags & PROCESS_FLAG_LINUX_SECATTR;
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Metric_enable(PCP_PROC_LABELS, flagged);
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flagged = flags & PROCESS_FLAG_LINUX_AUTOGROUP;
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Metric_enable(PCP_PROC_AUTOGROUP_ID, flagged);
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Metric_enable(PCP_PROC_AUTOGROUP_NICE, flagged);
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/* Sample smaps metrics on every second pass to improve performance */
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host->smaps_flag = !!host->smaps_flag;
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Metric_enable(PCP_PROC_SMAPS_PSS, host->smaps_flag);
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Metric_enable(PCP_PROC_SMAPS_SWAP, host->smaps_flag);
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Metric_enable(PCP_PROC_SMAPS_SWAPPSS, host->smaps_flag);
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struct timeval timestamp;
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if (Metric_fetch(×tamp) != true)
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return;
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double sample = host->timestamp;
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host->timestamp = pmtimevalToReal(×tamp);
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host->period = (host->timestamp - sample) * 100;
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PCPMachine_scan(host);
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}
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Machine* Machine_new(UsersTable* usersTable, uid_t userId) {
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PCPMachine* this = xCalloc(1, sizeof(PCPMachine));
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Machine* super = &this->super;
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Machine_init(super, usersTable, userId);
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struct timeval timestamp;
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gettimeofday(×tamp, NULL);
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this->timestamp = pmtimevalToReal(×tamp);
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this->cpu = xCalloc(CPU_METRIC_COUNT, sizeof(pmAtomValue));
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PCPMachine_updateCPUcount(this);
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Platform_updateTables(super);
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return super;
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}
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void Machine_delete(Machine* super) {
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PCPMachine* this = (PCPMachine*) super;
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Machine_done(super);
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free(this->values);
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for (unsigned int i = 0; i < super->existingCPUs; i++)
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free(this->percpu[i]);
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free(this->percpu);
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free(this->cpu);
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free(this);
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}
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bool Machine_isCPUonline(const Machine* host, unsigned int id) {
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assert(id < host->existingCPUs);
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(void) host;
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pmAtomValue value;
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if (Metric_instance(PCP_PERCPU_SYSTEM, id, id, &value, PM_TYPE_U32))
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return true;
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return false;
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}
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