xref: /linux/tools/perf/util/counts.c (revision 7ae9fb1b7ecbb5d85d07857943f677fd1a559b18) 
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 
perf_counts__new(int ncpus,int nthreads)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 
perf_counts__delete(struct perf_counts * counts)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 
perf_counts__reset(struct perf_counts * counts)47 void perf_counts__reset(struct perf_counts *counts)
48 {
49 	xyarray__reset(counts->loaded);
50 	xyarray__reset(counts->values);
51 }
52 
evsel__reset_counts(struct evsel * evsel)53 void evsel__reset_counts(struct evsel *evsel)
54 {
55 	perf_counts__reset(evsel->counts);
56 }
57 
evsel__alloc_counts(struct evsel * evsel)58 int evsel__alloc_counts(struct evsel *evsel)
59 {
60 	struct perf_cpu_map *cpus = evsel__cpus(evsel);
61 	int nthreads = perf_thread_map__nr(evsel->core.threads);
62 
63 	evsel->counts = perf_counts__new(perf_cpu_map__nr(cpus), nthreads);
64 	return evsel->counts != NULL ? 0 : -ENOMEM;
65 }
66 
evsel__free_counts(struct evsel * evsel)67 void evsel__free_counts(struct evsel *evsel)
68 {
69 	perf_counts__delete(evsel->counts);
70 	evsel->counts = NULL;
71 }
72