project-base/server-skynet-source-3rd-jemalloc
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Tests: Shouldn't be able to change global slowness.

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This can help ensure that we don't leave slowness changes behind in case of
resource exhaustion.
This commit is contained in:
David Goldblatt 2018-05-11 16:43:43 -07:00 committed by David Goldblatt
parent 59e371f463
commit 0379235f47
3 changed files with 19 additions and 1 deletions
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1
include/jemalloc/internal/tsd.h
View File

@ -117,6 +117,7 @@ void tsd_slow_update(tsd_t *tsd);
*/
void tsd_global_slow_inc(tsdn_t *tsdn);
void tsd_global_slow_dec(tsdn_t *tsdn);
bool tsd_global_slow();
enum {
/* Common case --> jnz. */

2
src/tsd.c
View File

@ -141,7 +141,7 @@ tsd_local_slow(tsd_t *tsd) {
|| tsd_reentrancy_level_get(tsd) > 0;
}
static bool
bool
tsd_global_slow() {
return atomic_load_u32(&tsd_global_slow_count, ATOMIC_RELAXED) > 0;
}

17
test/src/test.c
View File

@ -110,6 +110,20 @@ p_test_fini(void) {
test_status_string(test_status));
}
static void
check_global_slow(test_status_t *status) {
#ifdef JEMALLOC_UNIT_TEST
/*
* This check needs to peek into tsd internals, which is why it's only
* exposed in unit tests.
*/
if (tsd_global_slow()) {
malloc_printf("Testing increased global slow count\n");
*status = test_status_fail;
}
#endif
}
static test_status_t
p_test_impl(bool do_malloc_init, bool do_reentrant, test_t *t, va_list ap) {
test_status_t ret;
@ -136,6 +150,7 @@ p_test_impl(bool do_malloc_init, bool do_reentrant, test_t *t, va_list ap) {
if (test_status > ret) {
ret = test_status;
}
check_global_slow(&ret);
/* Reentrant run. */
if (do_reentrant) {
reentrancy = libc_reentrant;
@ -145,6 +160,7 @@ p_test_impl(bool do_malloc_init, bool do_reentrant, test_t *t, va_list ap) {
if (test_status > ret) {
ret = test_status;
}
check_global_slow(&ret);
reentrancy = arena_new_reentrant;
test_hooks_libc_hook = NULL;
@ -153,6 +169,7 @@ p_test_impl(bool do_malloc_init, bool do_reentrant, test_t *t, va_list ap) {
if (test_status > ret) {
ret = test_status;
}
check_global_slow(&ret);
}
}