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Subject[PATCH 29/29] perf evsel: Introduce perf_evsel__{in,ex}it
Date
From: Arnaldo Carvalho de Melo <acme@redhat.com>

Out of the {con,des}structor, as in interpreted language bindings we will
need to go back from the wrapper object to the real thing. In that case
using container_of will save us to have an extra pointer in the perf_evsel
struct.
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Tom Zanussi <tzanussi@gmail.com>
LKML-Reference: <new-submission>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/evlist.c | 29 ++++++++++++++++++++---------
tools/perf/util/evlist.h | 2 ++
tools/perf/util/evsel.c | 22 ++++++++++++++++------
tools/perf/util/evsel.h | 3 +++
4 files changed, 41 insertions(+), 15 deletions(-)
diff --git a/tools/perf/util/evlist.c b/tools/perf/util/evlist.c
index 4b3b84c..df0610e 100644
--- a/tools/perf/util/evlist.c
+++ b/tools/perf/util/evlist.c
@@ -6,17 +6,21 @@
#include <linux/bitops.h>
#include <linux/hash.h>

+void perf_evlist__init(struct perf_evlist *evlist)
+{
+ int i;
+
+ for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i)
+ INIT_HLIST_HEAD(&evlist->heads[i]);
+ INIT_LIST_HEAD(&evlist->entries);
+}
+
struct perf_evlist *perf_evlist__new(void)
{
struct perf_evlist *evlist = zalloc(sizeof(*evlist));

- if (evlist != NULL) {
- int i;
-
- for (i = 0; i < PERF_EVLIST__HLIST_SIZE; ++i)
- INIT_HLIST_HEAD(&evlist->heads[i]);
- INIT_LIST_HEAD(&evlist->entries);
- }
+ if (evlist != NULL)
+ perf_evlist__init(evlist);

return evlist;
}
@@ -33,11 +37,18 @@ static void perf_evlist__purge(struct perf_evlist *evlist)
evlist->nr_entries = 0;
}

-void perf_evlist__delete(struct perf_evlist *evlist)
+void perf_evlist__exit(struct perf_evlist *evlist)
{
- perf_evlist__purge(evlist);
free(evlist->mmap);
free(evlist->pollfd);
+ evlist->mmap = NULL;
+ evlist->pollfd = NULL;
+}
+
+void perf_evlist__delete(struct perf_evlist *evlist)
+{
+ perf_evlist__purge(evlist);
+ perf_evlist__exit(evlist);
free(evlist);
}

diff --git a/tools/perf/util/evlist.h b/tools/perf/util/evlist.h
index 2871206..acbe48e 100644
--- a/tools/perf/util/evlist.h
+++ b/tools/perf/util/evlist.h
@@ -24,6 +24,8 @@ struct perf_evlist {
struct perf_evsel;

struct perf_evlist *perf_evlist__new(void);
+void perf_evlist__init(struct perf_evlist *evlist);
+void perf_evlist__exit(struct perf_evlist *evlist);
void perf_evlist__delete(struct perf_evlist *evlist);

void perf_evlist__add(struct perf_evlist *evlist, struct perf_evsel *entry);
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index a85ae12..76ab553 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -14,15 +14,20 @@
#define FD(e, x, y) (*(int *)xyarray__entry(e->fd, x, y))
#define SID(e, x, y) xyarray__entry(e->id, x, y)

+void perf_evsel__init(struct perf_evsel *evsel,
+ struct perf_event_attr *attr, int idx)
+{
+ evsel->idx = idx;
+ evsel->attr = *attr;
+ INIT_LIST_HEAD(&evsel->node);
+}
+
struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx)
{
struct perf_evsel *evsel = zalloc(sizeof(*evsel));

- if (evsel != NULL) {
- evsel->idx = idx;
- evsel->attr = *attr;
- INIT_LIST_HEAD(&evsel->node);
- }
+ if (evsel != NULL)
+ perf_evsel__init(evsel, attr, idx);

return evsel;
}
@@ -87,11 +92,16 @@ int perf_evlist__alloc_mmap(struct perf_evlist *evlist, int ncpus)
return evlist->mmap != NULL ? 0 : -ENOMEM;
}

-void perf_evsel__delete(struct perf_evsel *evsel)
+void perf_evsel__exit(struct perf_evsel *evsel)
{
assert(list_empty(&evsel->node));
xyarray__delete(evsel->fd);
xyarray__delete(evsel->id);
+}
+
+void perf_evsel__delete(struct perf_evsel *evsel)
+{
+ perf_evsel__exit(evsel);
free(evsel);
}

diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 667ee4e..7962e75 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -52,6 +52,9 @@ struct thread_map;
struct perf_evlist;

struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx);
+void perf_evsel__init(struct perf_evsel *evsel,
+ struct perf_event_attr *attr, int idx);
+void perf_evsel__exit(struct perf_evsel *evsel);
void perf_evsel__delete(struct perf_evsel *evsel);

int perf_evsel__alloc_fd(struct perf_evsel *evsel, int ncpus, int nthreads);
--
1.6.2.5


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