perf/util/counts.c

0001 // SPDX-License-Identifier: GPL-2.0
0002 #include <errno.h>
0003 #include <stdlib.h>
0004 #include <string.h>
0005 #include "evsel.h"
0006 #include "counts.h"
0007 #include <perf/threadmap.h>
0008 #include <linux/zalloc.h>
0009
0010 struct perf_counts *perf_counts__new(int ncpus, int nthreads)
0011 {
0012     struct perf_counts *counts = zalloc(sizeof(*counts));
0013
0014     if (counts) {
0015         struct xyarray *values;
0016
0017         values = xyarray__new(ncpus, nthreads, sizeof(struct perf_counts_values));
0018         if (!values) {
0019             free(counts);
0020             return NULL;
0021         }
0022
0023         counts->values = values;
0024
0025         values = xyarray__new(ncpus, nthreads, sizeof(bool));
0026         if (!values) {
0027             xyarray__delete(counts->values);
0028             free(counts);
0029             return NULL;
0030         }
0031
0032         counts->loaded = values;
0033     }
0034
0035     return counts;
0036 }
0037
0038 void perf_counts__delete(struct perf_counts *counts)
0039 {
0040     if (counts) {
0041         xyarray__delete(counts->loaded);
0042         xyarray__delete(counts->values);
0043         free(counts);
0044     }
0045 }
0046
0047 void perf_counts__reset(struct perf_counts *counts)
0048 {
0049     xyarray__reset(counts->loaded);
0050     xyarray__reset(counts->values);
0051     memset(&counts->aggr, 0, sizeof(struct perf_counts_values));
0052 }
0053
0054 void evsel__reset_counts(struct evsel *evsel)
0055 {
0056     perf_counts__reset(evsel->counts);
0057 }
0058
0059 int evsel__alloc_counts(struct evsel *evsel)
0060 {
0061     struct perf_cpu_map *cpus = evsel__cpus(evsel);
0062     int nthreads = perf_thread_map__nr(evsel->core.threads);
0063
0064     evsel->counts = perf_counts__new(perf_cpu_map__nr(cpus), nthreads);
0065     return evsel->counts != NULL ? 0 : -ENOMEM;
0066 }
0067
0068 void evsel__free_counts(struct evsel *evsel)
0069 {
0070     perf_counts__delete(evsel->counts);
0071     evsel->counts = NULL;
0072 }