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