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