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 } 141