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	return 0;
106}
107
108int test__thread_map_remove(struct test *test __maybe_unused, int subtest __maybe_unused)
109{
110	struct perf_thread_map *threads;
111	char *str;
112	int i;
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
119	TEST_ASSERT_VAL("failed to allocate thread_map",
120			threads);
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 != 1", threads->nr == 1);
129
130	if (verbose > 0)
131		thread_map__fprintf(threads, stderr);
132
133	TEST_ASSERT_VAL("failed to remove thread",
134			!thread_map__remove(threads, 0));
135
136	TEST_ASSERT_VAL("thread_map count != 0", threads->nr == 0);
137
138	if (verbose > 0)
139		thread_map__fprintf(threads, stderr);
140
141	TEST_ASSERT_VAL("failed to not remove thread",
142			thread_map__remove(threads, 0));
143
144	for (i = 0; i < threads->nr; i++)
145		zfree(&threads->map[i].comm);
146
147	free(threads);
148	return 0;
149}
150