tools/perf/tests/thread-map.c

   1 #include <stdlib.h>
   2 #include <sys/types.h>
   3 #include <unistd.h>
   4 #include <sys/prctl.h>
   5 #include "tests.h"
   6 #include "thread_map.h"
   7 #include "debug.h"
   8
   9 #define NAME    (const char *) "perf"
  10 #define NAMEUL  (unsigned long) NAME
  11
  12 int test__thread_map(int subtest __maybe_unused)
  13 {
  14         struct thread_map *map;
  15
  16         TEST_ASSERT_VAL("failed to set process name",
  17                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  18
  19         /* test map on current pid */
  20         map = thread_map__new_by_pid(getpid());
  21         TEST_ASSERT_VAL("failed to alloc map", map);
  22
  23         thread_map__read_comms(map);
  24
  25         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  26         TEST_ASSERT_VAL("wrong pid",
  27                         thread_map__pid(map, 0) == getpid());
  28         TEST_ASSERT_VAL("wrong comm",
  29                         thread_map__comm(map, 0) &&
  30                         !strcmp(thread_map__comm(map, 0), NAME));
  31         TEST_ASSERT_VAL("wrong refcnt",
  32                         refcount_read(&map->refcnt) == 1);
  33         thread_map__put(map);
  34
  35         /* test dummy pid */
  36         map = thread_map__new_dummy();
  37         TEST_ASSERT_VAL("failed to alloc map", map);
  38
  39         thread_map__read_comms(map);
  40
  41         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  42         TEST_ASSERT_VAL("wrong pid", thread_map__pid(map, 0) == -1);
  43         TEST_ASSERT_VAL("wrong comm",
  44                         thread_map__comm(map, 0) &&
  45                         !strcmp(thread_map__comm(map, 0), "dummy"));
  46         TEST_ASSERT_VAL("wrong refcnt",
  47                         refcount_read(&map->refcnt) == 1);
  48         thread_map__put(map);
  49         return 0;
  50 }
  51
  52 static int process_event(struct perf_tool *tool __maybe_unused,
  53                          union perf_event *event,
  54                          struct perf_sample *sample __maybe_unused,
  55                          struct machine *machine __maybe_unused)
  56 {
  57         struct thread_map_event *map = &event->thread_map;
  58         struct thread_map *threads;
  59
  60         TEST_ASSERT_VAL("wrong nr",   map->nr == 1);
  61         TEST_ASSERT_VAL("wrong pid",  map->entries[0].pid == (u64) getpid());
  62         TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME));
  63
  64         threads = thread_map__new_event(&event->thread_map);
  65         TEST_ASSERT_VAL("failed to alloc map", threads);
  66
  67         TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
  68         TEST_ASSERT_VAL("wrong pid",
  69                         thread_map__pid(threads, 0) == getpid());
  70         TEST_ASSERT_VAL("wrong comm",
  71                         thread_map__comm(threads, 0) &&
  72                         !strcmp(thread_map__comm(threads, 0), NAME));
  73         TEST_ASSERT_VAL("wrong refcnt",
  74                         refcount_read(&threads->refcnt) == 1);
  75         thread_map__put(threads);
  76         return 0;
  77 }
  78
  79 int test__thread_map_synthesize(int subtest __maybe_unused)
  80 {
  81         struct thread_map *threads;
  82
  83         TEST_ASSERT_VAL("failed to set process name",
  84                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  85
  86         /* test map on current pid */
  87         threads = thread_map__new_by_pid(getpid());
  88         TEST_ASSERT_VAL("failed to alloc map", threads);
  89
  90         thread_map__read_comms(threads);
  91
  92         TEST_ASSERT_VAL("failed to synthesize map",
  93                 !perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL));
  94
  95         return 0;
  96 }
  97
  98 int test__thread_map_remove(int subtest __maybe_unused)
  99 {
 100         struct thread_map *threads;
 101         char *str;
 102         int i;
 103
 104         TEST_ASSERT_VAL("failed to allocate map string",
 105                         asprintf(&str, "%d,%d", getpid(), getppid()) >= 0);
 106
 107         threads = thread_map__new_str(str, NULL, 0);
 108
 109         TEST_ASSERT_VAL("failed to allocate thread_map",
 110                         threads);
 111
 112         if (verbose > 0)
 113                 thread_map__fprintf(threads, stderr);
 114
 115         TEST_ASSERT_VAL("failed to remove thread",
 116                         !thread_map__remove(threads, 0));
 117
 118         TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1);
 119
 120         if (verbose > 0)
 121                 thread_map__fprintf(threads, stderr);
 122
 123         TEST_ASSERT_VAL("failed to remove thread",
 124                         !thread_map__remove(threads, 0));
 125
 126         TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0);
 127
 128         if (verbose > 0)
 129                 thread_map__fprintf(threads, stderr);
 130
 131         TEST_ASSERT_VAL("failed to not remove thread",
 132                         thread_map__remove(threads, 0));
 133
 134         for (i = 0; i < threads->nr; i++)
 135                 free(threads->map[i].comm);
 136
 137         free(threads);
 138         return 0;
 139 }