Add hook microbenchmark.

This commit is contained in:
David Goldblatt 2018-08-01 14:22:05 -07:00 committed by David Goldblatt
parent 0771ff2cea
commit 1f71e1ca43
2 changed files with 76 additions and 1 deletions

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@ -242,7 +242,9 @@ else
CPP_SRCS :=
TESTS_INTEGRATION_CPP :=
endif
TESTS_STRESS := $(srcroot)test/stress/microbench.c
TESTS_STRESS := $(srcroot)test/stress/microbench.c \
$(srcroot)test/stress/hookbench.c
TESTS := $(TESTS_UNIT) $(TESTS_INTEGRATION) $(TESTS_INTEGRATION_CPP) $(TESTS_STRESS)

73
test/stress/hookbench.c Normal file
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@ -0,0 +1,73 @@
#include "test/jemalloc_test.h"
static void
noop_alloc_hook(void *extra, hook_alloc_t type, void *result,
uintptr_t result_raw, uintptr_t args_raw[3]) {
}
static void
noop_dalloc_hook(void *extra, hook_dalloc_t type, void *address,
uintptr_t args_raw[3]) {
}
static void
noop_expand_hook(void *extra, hook_expand_t type, void *address,
size_t old_usize, size_t new_usize, uintptr_t result_raw,
uintptr_t args_raw[4]) {
}
static void
malloc_free_loop(int iters) {
for (int i = 0; i < iters; i++) {
void *p = mallocx(1, 0);
free(p);
}
}
static void
test_hooked(int iters) {
hooks_t hooks = {&noop_alloc_hook, &noop_dalloc_hook, &noop_expand_hook,
NULL};
int err;
void *handles[HOOK_MAX];
size_t sz = sizeof(handles[0]);
for (int i = 0; i < HOOK_MAX; i++) {
err = mallctl("experimental.hooks.install", &handles[i],
&sz, &hooks, sizeof(hooks));
assert(err == 0);
timedelta_t timer;
timer_start(&timer);
malloc_free_loop(iters);
timer_stop(&timer);
malloc_printf("With %d hook%s: %"FMTu64"us\n", i + 1,
i + 1 == 1 ? "" : "s", timer_usec(&timer));
}
for (int i = 0; i < HOOK_MAX; i++) {
err = mallctl("experimental.hooks.remove", NULL, NULL,
&handles[i], sizeof(handles[i]));
assert(err == 0);
}
}
static void
test_unhooked(int iters) {
timedelta_t timer;
timer_start(&timer);
malloc_free_loop(iters);
timer_stop(&timer);
malloc_printf("Without hooks: %"FMTu64"us\n", timer_usec(&timer));
}
int
main(void) {
/* Initialize */
free(mallocx(1, 0));
int iters = 10 * 1000 * 1000;
malloc_printf("Benchmarking hooks with %d iterations:\n", iters);
test_hooked(iters);
test_unhooked(iters);
}