int perf_event__synthesize_thread_map2(struct perf_tool *tool,
struct thread_map *threads,
perf_event__handler_t process,
struct machine *machine)
{
union perf_event *event;
int i, err, size;
size = sizeof(event->thread_map);
size += threads->nr * sizeof(event->thread_map.entries[0]);
event = zalloc(size);
if (!event)
return -ENOMEM;
event->header.type = PERF_RECORD_THREAD_MAP;
event->header.size = size;
event->thread_map.nr = threads->nr;
for (i = 0; i < threads->nr; i++) {
struct thread_map_event_entry *entry = &event->thread_map.entries[i];
char *comm = thread_map__comm(threads, i);
if (!comm)
comm = (char *) "";
entry->pid = thread_map__pid(threads, i);
strncpy((char *) &entry->comm, comm, sizeof(entry->comm));
}
err = process(tool, event, NULL, machine);
free(event);
return err;
}
static void thread_map__delete(struct thread_map *threads)
{
if (threads) {
int i;
WARN_ONCE(atomic_read(&threads->refcnt) != 0,
"thread map refcnt unbalanced\n");
for (i = 0; i < threads->nr; i++)
free(thread_map__comm(threads, i));
free(threads);
}
}
int test__thread_map(int subtest __maybe_unused)
{
struct thread_map *map;
/* test map on current pid */
map = thread_map__new_by_pid(getpid());
TEST_ASSERT_VAL("failed to alloc map", map);
thread_map__read_comms(map);
TEST_ASSERT_VAL("wrong nr", map->nr == 1);
TEST_ASSERT_VAL("wrong pid",
thread_map__pid(map, 0) == getpid());
TEST_ASSERT_VAL("wrong comm",
thread_map__comm(map, 0) &&
!strcmp(thread_map__comm(map, 0), "perf"));
TEST_ASSERT_VAL("wrong refcnt",
atomic_read(&map->refcnt) == 1);
thread_map__put(map);
/* test dummy pid */
map = thread_map__new_dummy();
TEST_ASSERT_VAL("failed to alloc map", map);
thread_map__read_comms(map);
TEST_ASSERT_VAL("wrong nr", map->nr == 1);
TEST_ASSERT_VAL("wrong pid", thread_map__pid(map, 0) == -1);
TEST_ASSERT_VAL("wrong comm",
thread_map__comm(map, 0) &&
!strcmp(thread_map__comm(map, 0), "dummy"));
TEST_ASSERT_VAL("wrong refcnt",
atomic_read(&map->refcnt) == 1);
thread_map__put(map);
return 0;
}
{
struct thread_map_event *map = &event->thread_map;
struct thread_map *threads;
TEST_ASSERT_VAL("wrong nr", map->nr == 1);
TEST_ASSERT_VAL("wrong pid", map->entries[0].pid == (u64) getpid());
TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, "perf"));
threads = thread_map__new_event(&event->thread_map);
TEST_ASSERT_VAL("failed to alloc map", threads);
TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
TEST_ASSERT_VAL("wrong pid",
thread_map__pid(threads, 0) == getpid());
TEST_ASSERT_VAL("wrong comm",
thread_map__comm(threads, 0) &&
!strcmp(thread_map__comm(threads, 0), "perf"));
TEST_ASSERT_VAL("wrong refcnt",
atomic_read(&threads->refcnt) == 1);
thread_map__put(threads);
return 0;
}
int test__thread_map_synthesize(int subtest __maybe_unused)
{
struct thread_map *threads;
/* test map on current pid */
threads = thread_map__new_by_pid(getpid());
TEST_ASSERT_VAL("failed to alloc map", threads);
