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