1 #include "test/jemalloc_test.h"
2
3 #ifdef JEMALLOC_PROF
4 const char *malloc_conf = "prof:true,prof_active:false";
5 #endif
6
7 static void
mallctl_thread_name_get_impl(const char * thread_name_expected,const char * func,int line)8 mallctl_thread_name_get_impl(const char *thread_name_expected, const char *func,
9 int line)
10 {
11 const char *thread_name_old;
12 size_t sz;
13
14 sz = sizeof(thread_name_old);
15 assert_d_eq(mallctl("thread.prof.name", (void *)&thread_name_old, &sz,
16 NULL, 0), 0,
17 "%s():%d: Unexpected mallctl failure reading thread.prof.name",
18 func, line);
19 assert_str_eq(thread_name_old, thread_name_expected,
20 "%s():%d: Unexpected thread.prof.name value", func, line);
21 }
22 #define mallctl_thread_name_get(a) \
23 mallctl_thread_name_get_impl(a, __func__, __LINE__)
24
25 static void
mallctl_thread_name_set_impl(const char * thread_name,const char * func,int line)26 mallctl_thread_name_set_impl(const char *thread_name, const char *func,
27 int line)
28 {
29 assert_d_eq(mallctl("thread.prof.name", NULL, NULL,
30 (void *)&thread_name, sizeof(thread_name)), 0,
31 "%s():%d: Unexpected mallctl failure reading thread.prof.name",
32 func, line);
33 mallctl_thread_name_get_impl(thread_name, func, line);
34 }
35 #define mallctl_thread_name_set(a) \
36 mallctl_thread_name_set_impl(a, __func__, __LINE__)
37
TEST_BEGIN(test_prof_thread_name_validation)38 TEST_BEGIN(test_prof_thread_name_validation)
39 {
40 const char *thread_name;
41
42 test_skip_if(!config_prof);
43
44 mallctl_thread_name_get("");
45 mallctl_thread_name_set("hi there");
46
47 /* NULL input shouldn't be allowed. */
48 thread_name = NULL;
49 assert_d_eq(mallctl("thread.prof.name", NULL, NULL,
50 (void *)&thread_name, sizeof(thread_name)), EFAULT,
51 "Unexpected mallctl result writing \"%s\" to thread.prof.name",
52 thread_name);
53
54 /* '\n' shouldn't be allowed. */
55 thread_name = "hi\nthere";
56 assert_d_eq(mallctl("thread.prof.name", NULL, NULL,
57 (void *)&thread_name, sizeof(thread_name)), EFAULT,
58 "Unexpected mallctl result writing \"%s\" to thread.prof.name",
59 thread_name);
60
61 /* Simultaneous read/write shouldn't be allowed. */
62 {
63 const char *thread_name_old;
64 size_t sz;
65
66 sz = sizeof(thread_name_old);
67 assert_d_eq(mallctl("thread.prof.name",
68 (void *)&thread_name_old, &sz, (void *)&thread_name,
69 sizeof(thread_name)), EPERM,
70 "Unexpected mallctl result writing \"%s\" to "
71 "thread.prof.name", thread_name);
72 }
73
74 mallctl_thread_name_set("");
75 }
76 TEST_END
77
78 #define NTHREADS 4
79 #define NRESET 25
80 static void *
thd_start(void * varg)81 thd_start(void *varg)
82 {
83 unsigned thd_ind = *(unsigned *)varg;
84 char thread_name[16] = "";
85 unsigned i;
86
87 malloc_snprintf(thread_name, sizeof(thread_name), "thread %u", thd_ind);
88
89 mallctl_thread_name_get("");
90 mallctl_thread_name_set(thread_name);
91
92 for (i = 0; i < NRESET; i++) {
93 assert_d_eq(mallctl("prof.reset", NULL, NULL, NULL, 0), 0,
94 "Unexpected error while resetting heap profile data");
95 mallctl_thread_name_get(thread_name);
96 }
97
98 mallctl_thread_name_set(thread_name);
99 mallctl_thread_name_set("");
100
101 return (NULL);
102 }
103
TEST_BEGIN(test_prof_thread_name_threaded)104 TEST_BEGIN(test_prof_thread_name_threaded)
105 {
106 thd_t thds[NTHREADS];
107 unsigned thd_args[NTHREADS];
108 unsigned i;
109
110 test_skip_if(!config_prof);
111
112 for (i = 0; i < NTHREADS; i++) {
113 thd_args[i] = i;
114 thd_create(&thds[i], thd_start, (void *)&thd_args[i]);
115 }
116 for (i = 0; i < NTHREADS; i++)
117 thd_join(thds[i], NULL);
118 }
119 TEST_END
120 #undef NTHREADS
121 #undef NRESET
122
123 int
main(void)124 main(void)
125 {
126 return (test(
127 test_prof_thread_name_validation,
128 test_prof_thread_name_threaded));
129 }
130