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
16struct perf_sample;
17struct perf_tool;
18struct machine;
19
20#define NAME	(const char *) "perf"
21#define NAMEUL	(unsigned long) NAME
22
23static 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
63static 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
90static 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
110static 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
150DEFINE_SUITE("Thread map", thread_map);
151DEFINE_SUITE("Synthesize thread map", thread_map_synthesize);
152DEFINE_SUITE("Remove thread map", thread_map_remove);
153