LXR linux/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
  12int 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
  52static 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
  79int 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
  98int 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}
 140