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); 153