tools/perf/tests/thread-map.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <stdlib.h>
   3 #include <string.h>
   4 #include <sys/types.h>
   5 #include <unistd.h>
   6 #include <sys/prctl.h>
   7 #include "tests.h"
   8 #include "thread_map.h"
   9 #include "debug.h"
  10 #include "event.h"
  11 #include "util/synthetic-events.h"
  12 #include <linux/zalloc.h>
  13 #include <perf/event.h>
  14 #include <internal/threadmap.h>
  15
  16 struct perf_sample;
  17 struct perf_tool;
  18 struct machine;
  19
  20 #define NAME    (const char *) "perf"
  21 #define NAMEUL  (unsigned long) NAME
  22
  23 static int test__thread_map(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
  24 {
  25         struct perf_thread_map *map;
  26
  27         TEST_ASSERT_VAL("failed to set process name",
  28                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  29
  30         /* test map on current pid */
  31         map = thread_map__new_by_pid(getpid());
  32         TEST_ASSERT_VAL("failed to alloc map", map);
  33
  34         thread_map__read_comms(map);
  35
  36         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  37         TEST_ASSERT_VAL("wrong pid",
  38                         perf_thread_map__pid(map, 0) == getpid());
  39         TEST_ASSERT_VAL("wrong comm",
  40                         perf_thread_map__comm(map, 0) &&
  41                         !strcmp(perf_thread_map__comm(map, 0), NAME));
  42         TEST_ASSERT_VAL("wrong refcnt",
  43                         refcount_read(&map->refcnt) == 1);
  44         perf_thread_map__put(map);
  45
  46         /* test dummy pid */
  47         map = perf_thread_map__new_dummy();
  48         TEST_ASSERT_VAL("failed to alloc map", map);
  49
  50         thread_map__read_comms(map);
  51
  52         TEST_ASSERT_VAL("wrong nr", map->nr == 1);
  53         TEST_ASSERT_VAL("wrong pid", perf_thread_map__pid(map, 0) == -1);
  54         TEST_ASSERT_VAL("wrong comm",
  55                         perf_thread_map__comm(map, 0) &&
  56                         !strcmp(perf_thread_map__comm(map, 0), "dummy"));
  57         TEST_ASSERT_VAL("wrong refcnt",
  58                         refcount_read(&map->refcnt) == 1);
  59         perf_thread_map__put(map);
  60         return 0;
  61 }
  62
  63 static int process_event(struct perf_tool *tool __maybe_unused,
  64                          union perf_event *event,
  65                          struct perf_sample *sample __maybe_unused,
  66                          struct machine *machine __maybe_unused)
  67 {
  68         struct perf_record_thread_map *map = &event->thread_map;
  69         struct perf_thread_map *threads;
  70
  71         TEST_ASSERT_VAL("wrong nr",   map->nr == 1);
  72         TEST_ASSERT_VAL("wrong pid",  map->entries[0].pid == (u64) getpid());
  73         TEST_ASSERT_VAL("wrong comm", !strcmp(map->entries[0].comm, NAME));
  74
  75         threads = thread_map__new_event(&event->thread_map);
  76         TEST_ASSERT_VAL("failed to alloc map", threads);
  77
  78         TEST_ASSERT_VAL("wrong nr", threads->nr == 1);
  79         TEST_ASSERT_VAL("wrong pid",
  80                         perf_thread_map__pid(threads, 0) == getpid());
  81         TEST_ASSERT_VAL("wrong comm",
  82                         perf_thread_map__comm(threads, 0) &&
  83                         !strcmp(perf_thread_map__comm(threads, 0), NAME));
  84         TEST_ASSERT_VAL("wrong refcnt",
  85                         refcount_read(&threads->refcnt) == 1);
  86         perf_thread_map__put(threads);
  87         return 0;
  88 }
  89
  90 static int test__thread_map_synthesize(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
  91 {
  92         struct perf_thread_map *threads;
  93
  94         TEST_ASSERT_VAL("failed to set process name",
  95                         !prctl(PR_SET_NAME, NAMEUL, 0, 0, 0));
  96
  97         /* test map on current pid */
  98         threads = thread_map__new_by_pid(getpid());
  99         TEST_ASSERT_VAL("failed to alloc map", threads);
 100
 101         thread_map__read_comms(threads);
 102
 103         TEST_ASSERT_VAL("failed to synthesize map",
 104                 !perf_event__synthesize_thread_map2(NULL, threads, process_event, NULL));
 105
 106         perf_thread_map__put(threads);
 107         return 0;
 108 }
 109
 110 static int test__thread_map_remove(struct test_suite *test __maybe_unused, int subtest __maybe_unused)
 111 {
 112         struct perf_thread_map *threads;
 113         char *str;
 114
 115         TEST_ASSERT_VAL("failed to allocate map string",
 116                         asprintf(&str, "%d,%d", getpid(), getppid()) >= 0);
 117
 118         threads = thread_map__new_str(str, NULL, 0, false);
 119         free(str);
 120
 121         TEST_ASSERT_VAL("failed to allocate thread_map",
 122                         threads);
 123
 124         if (verbose > 0)
 125                 thread_map__fprintf(threads, stderr);
 126
 127         TEST_ASSERT_VAL("failed to remove thread",
 128                         !thread_map__remove(threads, 0));
 129
 130         TEST_ASSERT_VAL("thread_map count != 1", threads->nr == 1);
 131
 132         if (verbose > 0)
 133                 thread_map__fprintf(threads, stderr);
 134
 135         TEST_ASSERT_VAL("failed to remove thread",
 136                         !thread_map__remove(threads, 0));
 137
 138         TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0);
 139
 140         if (verbose > 0)
 141                 thread_map__fprintf(threads, stderr);
 142
 143         TEST_ASSERT_VAL("failed to not remove thread",
 144                         thread_map__remove(threads, 0));
 145
 146         perf_thread_map__put(threads);
 147         return 0;
 148 }
 149
 150 DEFINE_SUITE("Thread map", thread_map);
 151 DEFINE_SUITE("Synthesize thread map", thread_map_synthesize);
 152 DEFINE_SUITE("Remove thread map", thread_map_remove);