1 #include "prof_accum.h"
2
3 #ifdef JEMALLOC_PROF
4 const char *malloc_conf =
5 "prof:true,prof_accum:true,prof_active:false,lg_prof_sample:0";
6 #endif
7
8 static int
prof_dump_open_intercept(bool propagate_err,const char * filename)9 prof_dump_open_intercept(bool propagate_err, const char *filename)
10 {
11 int fd;
12
13 fd = open("/dev/null", O_WRONLY);
14 assert_d_ne(fd, -1, "Unexpected open() failure");
15
16 return (fd);
17 }
18
19 static void *
alloc_from_permuted_backtrace(unsigned thd_ind,unsigned iteration)20 alloc_from_permuted_backtrace(unsigned thd_ind, unsigned iteration)
21 {
22
23 return (alloc_0(thd_ind*NALLOCS_PER_THREAD + iteration));
24 }
25
26 static void *
thd_start(void * varg)27 thd_start(void *varg)
28 {
29 unsigned thd_ind = *(unsigned *)varg;
30 size_t bt_count_prev, bt_count;
31 unsigned i_prev, i;
32
33 i_prev = 0;
34 bt_count_prev = 0;
35 for (i = 0; i < NALLOCS_PER_THREAD; i++) {
36 void *p = alloc_from_permuted_backtrace(thd_ind, i);
37 dallocx(p, 0);
38 if (i % DUMP_INTERVAL == 0) {
39 assert_d_eq(mallctl("prof.dump", NULL, NULL, NULL, 0),
40 0, "Unexpected error while dumping heap profile");
41 }
42
43 if (i % BT_COUNT_CHECK_INTERVAL == 0 ||
44 i+1 == NALLOCS_PER_THREAD) {
45 bt_count = prof_bt_count();
46 assert_zu_le(bt_count_prev+(i-i_prev), bt_count,
47 "Expected larger backtrace count increase");
48 i_prev = i;
49 bt_count_prev = bt_count;
50 }
51 }
52
53 return (NULL);
54 }
55
TEST_BEGIN(test_idump)56 TEST_BEGIN(test_idump)
57 {
58 bool active;
59 thd_t thds[NTHREADS];
60 unsigned thd_args[NTHREADS];
61 unsigned i;
62
63 test_skip_if(!config_prof);
64
65 active = true;
66 assert_d_eq(mallctl("prof.active", NULL, NULL, &active, sizeof(active)),
67 0, "Unexpected mallctl failure while activating profiling");
68
69 prof_dump_open = prof_dump_open_intercept;
70
71 for (i = 0; i < NTHREADS; i++) {
72 thd_args[i] = i;
73 thd_create(&thds[i], thd_start, (void *)&thd_args[i]);
74 }
75 for (i = 0; i < NTHREADS; i++)
76 thd_join(thds[i], NULL);
77 }
78 TEST_END
79
80 int
main(void)81 main(void)
82 {
83
84 return (test(
85 test_idump));
86 }
87