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
 13int 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
 53static 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
 80int 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
 99int 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}