server-skynet-source-3rd-je.../test/unit/prof_accum.c

82 lines
1.8 KiB
C

#include "test/jemalloc_test.h"
#define NTHREADS 4
#define NALLOCS_PER_THREAD 50
#define DUMP_INTERVAL 1
#define BT_COUNT_CHECK_INTERVAL 5
static int
prof_dump_open_file_intercept(const char *filename, int mode) {
int fd;
fd = open("/dev/null", O_WRONLY);
assert_d_ne(fd, -1, "Unexpected open() failure");
return fd;
}
static void *
alloc_from_permuted_backtrace(unsigned thd_ind, unsigned iteration) {
return btalloc(1, thd_ind*NALLOCS_PER_THREAD + iteration);
}
static void *
thd_start(void *varg) {
unsigned thd_ind = *(unsigned *)varg;
size_t bt_count_prev, bt_count;
unsigned i_prev, i;
i_prev = 0;
bt_count_prev = 0;
for (i = 0; i < NALLOCS_PER_THREAD; i++) {
void *p = alloc_from_permuted_backtrace(thd_ind, i);
dallocx(p, 0);
if (i % DUMP_INTERVAL == 0) {
expect_d_eq(mallctl("prof.dump", NULL, NULL, NULL, 0),
0, "Unexpected error while dumping heap profile");
}
if (i % BT_COUNT_CHECK_INTERVAL == 0 ||
i+1 == NALLOCS_PER_THREAD) {
bt_count = prof_bt_count();
expect_zu_le(bt_count_prev+(i-i_prev), bt_count,
"Expected larger backtrace count increase");
i_prev = i;
bt_count_prev = bt_count;
}
}
return NULL;
}
TEST_BEGIN(test_idump) {
bool active;
thd_t thds[NTHREADS];
unsigned thd_args[NTHREADS];
unsigned i;
test_skip_if(!config_prof);
active = true;
expect_d_eq(mallctl("prof.active", NULL, NULL, (void *)&active,
sizeof(active)), 0,
"Unexpected mallctl failure while activating profiling");
prof_dump_open_file = prof_dump_open_file_intercept;
for (i = 0; i < NTHREADS; i++) {
thd_args[i] = i;
thd_create(&thds[i], thd_start, (void *)&thd_args[i]);
}
for (i = 0; i < NTHREADS; i++) {
thd_join(thds[i], NULL);
}
}
TEST_END
int
main(void) {
return test_no_reentrancy(
test_idump);
}