projects/linux·blob master · refs

151 lines · 4.2 KiB

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 <perf/event.h>
13#include <internal/threadmap.h>
14
15struct perf_sample;
16struct perf_tool;
17struct machine;
18
19#define NAME (const char *) "perf"
20#define NAMEUL (unsigned long) NAME
21
22static 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
62static int process_event(const 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
89static 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
109static 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, /*tid=*/NULL, /*all_threads=*/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
149DEFINE_SUITE("Thread map", thread_map);
150DEFINE_SUITE("Synthesize thread map", thread_map_synthesize);
151DEFINE_SUITE("Remove thread map", thread_map_remove);