[PATCH 08/46] perf annotate: Introduce constructor/destructor for annotated_source

Arnaldo Carvalho de Melo
2018-06-05T17:51:10Z

More stuff will go in there, all the parts that are not needed when a
symbol had no samples and that were mistakenly added to 'struct
annotation'.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Wang Nan <wangnan0@huawei.com>
Link: https://lkml.kernel.org/n/tip-u4761kyzhixw9ydk6kib3f0o@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/annotate.c | 25 ++++++++++++++++++++++---
1 file changed, 22 insertions(+), 3 deletions(-)

diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index f0c6941bca6c..f6c9bb29ac84 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -678,6 +678,25 @@ static struct arch *arch__find(const char *name)
return bsearch(name, architectures, nmemb, sizeof(struct arch), arch__key_cmp);
}

+static struct annotated_source *annotated_source__new(void)
+{
+ struct annotated_source *src = zalloc(sizeof(*src));
+
+ if (src != NULL)
+ INIT_LIST_HEAD(&src->source);
+
+ return src;
+}
+
+static void annotated_source__delete(struct annotated_source *src)
+{
+ if (src == NULL)
+ return;
+ zfree(&src->histograms);
+ zfree(&src->cycles_hist);
+ free(src);
+}
+
int symbol__alloc_hist(struct symbol *sym)
{
struct annotation *notes = symbol__annotation(sym);
@@ -704,17 +723,17 @@ int symbol__alloc_hist(struct symbol *sym)
if (sizeof_sym_hist > SIZE_MAX / symbol_conf.nr_events)
return -1;

- notes->src = zalloc(sizeof(*notes->src));
+ notes->src = annotated_source__new();
if (notes->src == NULL)
return -1;
notes->src->histograms = calloc(symbol_conf.nr_events, sizeof_sym_hist);
if (notes->src->histograms == NULL) {
- zfree(&notes->src);
+ annotated_source__delete(notes->src);
+ notes->src = NULL;
return -1;
}
notes->src->sizeof_sym_hist = sizeof_sym_hist;
notes->src->nr_histograms = symbol_conf.nr_events;
- INIT_LIST_HEAD(&notes->src->source);
return 0;
}

--
2.14.3