tools/perf/tests/thread-map.c

   1 #include <sys/types.h>
   2 #include <unistd.h>
   3 #include <sys/prctl.h>
   4 #include "tests.h"
   5 #include "thread_map.h"
   6 #include "debug.h"
   7
   8 #define NAME    (const char *) "perf"
   9 #define NAMEUL  (unsigned long) NAME
  10
  11 int test__thread_map(int subtest __maybe_unused)
  12 {
  13         struct thread_map *map;
  14
  15         TEST_ASSERT_VAL("failed to set process name",
  16                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  17
  18         /* test map on current pid */
  19         map = thread_map__new_by_pid(getpid());
  20         TEST_ASSERT_VAL("failed to alloc map", map);
  21
  22         thread_map__read_comms(map);
  23
  24         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  25         TEST_ASSERT_VAL("wrong pid",
  26                         thread_map__pid(map, 0) == getpid());
  27         TEST_ASSERT_VAL("wrong comm",
  28                         thread_map__comm(map, 0) &&
  29                         !strcmp(thread_map__comm(map, 0), NAME));
  30         TEST_ASSERT_VAL("wrong refcnt",
  31                         atomic_read(&map->refcnt) == 1);
  32         thread_map__put(map);
  33
  34         /* test dummy pid */
  35         map = thread_map__new_dummy();
  36         TEST_ASSERT_VAL("failed to alloc map", map);
  37
  38         thread_map__read_comms(map);
  39
  40         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  41         TEST_ASSERT_VAL("wrong pid", thread_map__pid(map, 0) == -1);
  42         TEST_ASSERT_VAL("wrong comm",
  43                         thread_map__comm(map, 0) &&
  44                         !strcmp(thread_map__comm(map, 0), "dummy"));
  45         TEST_ASSERT_VAL("wrong refcnt",
  46                         atomic_read(&map->refcnt) == 1);
  47         thread_map__put(map);
  48         return 0;
  49 }
  50
  51 static int process_event(struct perf_tool *tool __maybe_unused,
  52                          union perf_event *event,
  53                          struct perf_sample *sample __maybe_unused,
  54                          struct machine *machine __maybe_unused)
  55 {
  56         struct thread_map_event *map = &event->thread_map;
  57         struct thread_map *threads;
  58
  59         TEST_ASSERT_VAL("wrong nr",   map->nr == 1);
  60         TEST_ASSERT_VAL("wrong pid",  map->entries[0].pid == (u64) getpid());
  61         TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME));
  62
  63         threads = thread_map__new_event(&event->thread_map);
  64         TEST_ASSERT_VAL("failed to alloc map", threads);
  65
  66         TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
  67         TEST_ASSERT_VAL("wrong pid",
  68                         thread_map__pid(threads, 0) == getpid());
  69         TEST_ASSERT_VAL("wrong comm",
  70                         thread_map__comm(threads, 0) &&
  71                         !strcmp(thread_map__comm(threads, 0), NAME));
  72         TEST_ASSERT_VAL("wrong refcnt",
  73                         atomic_read(&threads->refcnt) == 1);
  74         thread_map__put(threads);
  75         return 0;
  76 }
  77
  78 int test__thread_map_synthesize(int subtest __maybe_unused)
  79 {
  80         struct thread_map *threads;
  81
  82         TEST_ASSERT_VAL("failed to set process name",
  83                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  84
  85         /* test map on current pid */
  86         threads = thread_map__new_by_pid(getpid());
  87         TEST_ASSERT_VAL("failed to alloc map", threads);
  88
  89         thread_map__read_comms(threads);
  90
  91         TEST_ASSERT_VAL("failed to synthesize map",
  92                 !perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL));
  93
  94         return 0;
  95 }