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
 15struct perf_sample;
 16struct perf_tool;
 17struct machine;
 18
 19#define NAME	(const char *) "perf"
 20#define NAMEUL	(unsigned long) NAME
 21
 22int test__thread_map(struct test *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
 62static 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
 89int test__thread_map_synthesize(struct test *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
109int test__thread_map_remove(struct test *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}