tools/perf/tests/thread-map.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <stdlib.h>
   3 #include <sys/types.h>
   4 #include <unistd.h>
   5 #include <sys/prctl.h>
   6 #include "tests.h"
   7 #include "thread_map.h"
   8 #include "debug.h"
   9
  10 #define NAME    (const char *) "perf"
  11 #define NAMEUL  (unsigned long) NAME
  12
  13 int test__thread_map(struct test *test __maybe_unused, int subtest __maybe_unused)
  14 {
  15         struct thread_map *map;
  16
  17         TEST_ASSERT_VAL("failed to set process name",
  18                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  19
  20         /* test map on current pid */
  21         map = thread_map__new_by_pid(getpid());
  22         TEST_ASSERT_VAL("failed to alloc map", map);
  23
  24         thread_map__read_comms(map);
  25
  26         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  27         TEST_ASSERT_VAL("wrong pid",
  28                         thread_map__pid(map, 0) == getpid());
  29         TEST_ASSERT_VAL("wrong comm",
  30                         thread_map__comm(map, 0) &&
  31                         !strcmp(thread_map__comm(map, 0), NAME));
  32         TEST_ASSERT_VAL("wrong refcnt",
  33                         refcount_read(&map->refcnt) == 1);
  34         thread_map__put(map);
  35
  36         /* test dummy pid */
  37         map = thread_map__new_dummy();
  38         TEST_ASSERT_VAL("failed to alloc map", map);
  39
  40         thread_map__read_comms(map);
  41
  42         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  43         TEST_ASSERT_VAL("wrong pid", thread_map__pid(map, 0) == -1);
  44         TEST_ASSERT_VAL("wrong comm",
  45                         thread_map__comm(map, 0) &&
  46                         !strcmp(thread_map__comm(map, 0), "dummy"));
  47         TEST_ASSERT_VAL("wrong refcnt",
  48                         refcount_read(&map->refcnt) == 1);
  49         thread_map__put(map);
  50         return 0;
  51 }
  52
  53 static int process_event(struct perf_tool *tool __maybe_unused,
  54                          union perf_event *event,
  55                          struct perf_sample *sample __maybe_unused,
  56                          struct machine *machine __maybe_unused)
  57 {
  58         struct thread_map_event *map = &event->thread_map;
  59         struct thread_map *threads;
  60
  61         TEST_ASSERT_VAL("wrong nr",   map->nr == 1);
  62         TEST_ASSERT_VAL("wrong pid",  map->entries[0].pid == (u64) getpid());
  63         TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME));
  64
  65         threads = thread_map__new_event(&event->thread_map);
  66         TEST_ASSERT_VAL("failed to alloc map", threads);
  67
  68         TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
  69         TEST_ASSERT_VAL("wrong pid",
  70                         thread_map__pid(threads, 0) == getpid());
  71         TEST_ASSERT_VAL("wrong comm",
  72                         thread_map__comm(threads, 0) &&
  73                         !strcmp(thread_map__comm(threads, 0), NAME));
  74         TEST_ASSERT_VAL("wrong refcnt",
  75                         refcount_read(&threads->refcnt) == 1);
  76         thread_map__put(threads);
  77         return 0;
  78 }
  79
  80 int test__thread_map_synthesize(struct test *test __maybe_unused, int subtest __maybe_unused)
  81 {
  82         struct thread_map *threads;
  83
  84         TEST_ASSERT_VAL("failed to set process name",
  85                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  86
  87         /* test map on current pid */
  88         threads = thread_map__new_by_pid(getpid());
  89         TEST_ASSERT_VAL("failed to alloc map", threads);
  90
  91         thread_map__read_comms(threads);
  92
  93         TEST_ASSERT_VAL("failed to synthesize map",
  94                 !perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL));
  95
  96         return 0;
  97 }
  98
  99 int test__thread_map_remove(struct test *test __maybe_unused, int subtest __maybe_unused)
 100 {
 101         struct thread_map *threads;
 102         char *str;
 103         int i;
 104
 105         TEST_ASSERT_VAL("failed to allocate map string",
 106                         asprintf(&str, "%d,%d", getpid(), getppid()) >= 0);
 107
 108         threads = thread_map__new_str(str, NULL, 0, false);
 109
 110         TEST_ASSERT_VAL("failed to allocate thread_map",
 111                         threads);
 112
 113         if (verbose > 0)
 114                 thread_map__fprintf(threads, stderr);
 115
 116         TEST_ASSERT_VAL("failed to remove thread",
 117                         !thread_map__remove(threads, 0));
 118
 119         TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1);
 120
 121         if (verbose > 0)
 122                 thread_map__fprintf(threads, stderr);
 123
 124         TEST_ASSERT_VAL("failed to remove thread",
 125                         !thread_map__remove(threads, 0));
 126
 127         TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0);
 128
 129         if (verbose > 0)
 130                 thread_map__fprintf(threads, stderr);
 131
 132         TEST_ASSERT_VAL("failed to not remove thread",
 133                         thread_map__remove(threads, 0));
 134
 135         for (i = 0; i < threads->nr; i++)
 136                 free(threads->map[i].comm);
 137
 138         free(threads);
 139         return 0;
 140 }