tools/perf/util/counts.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <errno.h>
   3 #include <stdlib.h>
   4 #include <string.h>
   5 #include "evsel.h"
   6 #include "counts.h"
   7 #include <perf/threadmap.h>
   8 #include <linux/zalloc.h>
   9
  10 struct perf_counts *perf_counts__new(int ncpus, int nthreads)
  11 {
  12         struct perf_counts *counts = zalloc(sizeof(*counts));
  13
  14         if (counts) {
  15                 struct xyarray *values;
  16
  17                 values = xyarray__new(ncpus, nthreads, sizeof(struct perf_counts_values));
  18                 if (!values) {
  19                         free(counts);
  20                         return NULL;
  21                 }
  22
  23                 counts->values = values;
  24
  25                 values = xyarray__new(ncpus, nthreads, sizeof(bool));
  26                 if (!values) {
  27                         xyarray__delete(counts->values);
  28                         free(counts);
  29                         return NULL;
  30                 }
  31
  32                 counts->loaded = values;
  33         }
  34
  35         return counts;
  36 }
  37
  38 void perf_counts__delete(struct perf_counts *counts)
  39 {
  40         if (counts) {
  41                 xyarray__delete(counts->loaded);
  42                 xyarray__delete(counts->values);
  43                 free(counts);
  44         }
  45 }
  46
  47 void perf_counts__reset(struct perf_counts *counts)
  48 {
  49         xyarray__reset(counts->loaded);
  50         xyarray__reset(counts->values);
  51         memset(&counts->aggr, 0, sizeof(struct perf_counts_values));
  52 }
  53
  54 void evsel__reset_counts(struct evsel *evsel)
  55 {
  56         perf_counts__reset(evsel->counts);
  57 }
  58
  59 int evsel__alloc_counts(struct evsel *evsel)
  60 {
  61         struct perf_cpu_map *cpus = evsel__cpus(evsel);
  62         int nthreads = perf_thread_map__nr(evsel->core.threads);
  63
  64         evsel->counts = perf_counts__new(perf_cpu_map__nr(cpus), nthreads);
  65         return evsel->counts != NULL ? 0 : -ENOMEM;
  66 }
  67
  68 void evsel__free_counts(struct evsel *evsel)
  69 {
  70         perf_counts__delete(evsel->counts);
  71         evsel->counts = NULL;
  72 }