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#include "test/jemalloc_test.h"
#include "jemalloc/internal/edata_cache.h"
static void
test_edata_cache_init(edata_cache_t *edata_cache) {
base_t *base = base_new(TSDN_NULL, /* ind */ 1,
&ehooks_default_extent_hooks, /* metadata_use_hooks */ true);
assert_ptr_not_null(base, "");
bool err = edata_cache_init(edata_cache, base);
assert_false(err, "");
}
static void
test_edata_cache_destroy(edata_cache_t *edata_cache) {
base_delete(TSDN_NULL, edata_cache->base);
}
TEST_BEGIN(test_edata_cache) {
edata_cache_t ec;
test_edata_cache_init(&ec);
/* Get one */
edata_t *ed1 = edata_cache_get(TSDN_NULL, &ec);
assert_ptr_not_null(ed1, "");
/* Cache should be empty */
assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
/* Get another */
edata_t *ed2 = edata_cache_get(TSDN_NULL, &ec);
assert_ptr_not_null(ed2, "");
/* Still empty */
assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
/* Put one back, and the cache should now have one item */
edata_cache_put(TSDN_NULL, &ec, ed1);
assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 1, "");
/* Reallocating should reuse the item, and leave an empty cache. */
edata_t *ed1_again = edata_cache_get(TSDN_NULL, &ec);
assert_ptr_eq(ed1, ed1_again, "");
assert_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
test_edata_cache_destroy(&ec);
}
TEST_END
static size_t
ecf_count(edata_cache_fast_t *ecf) {
size_t count = 0;
edata_t *cur;
ql_foreach(cur, &ecf->list.head, ql_link_inactive) {
count++;
}
return count;
}
TEST_BEGIN(test_edata_cache_fast_simple) {
edata_cache_t ec;
edata_cache_fast_t ecf;
test_edata_cache_init(&ec);
edata_cache_fast_init(&ecf, &ec);
edata_t *ed1 = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_ptr_not_null(ed1, "");
expect_zu_eq(ecf_count(&ecf), 0, "");
expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
edata_t *ed2 = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_ptr_not_null(ed2, "");
expect_zu_eq(ecf_count(&ecf), 0, "");
expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
edata_cache_fast_put(TSDN_NULL, &ecf, ed1);
expect_zu_eq(ecf_count(&ecf), 1, "");
expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
edata_cache_fast_put(TSDN_NULL, &ecf, ed2);
expect_zu_eq(ecf_count(&ecf), 2, "");
expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
/* LIFO ordering. */
expect_ptr_eq(ed2, edata_cache_fast_get(TSDN_NULL, &ecf), "");
expect_zu_eq(ecf_count(&ecf), 1, "");
expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
expect_ptr_eq(ed1, edata_cache_fast_get(TSDN_NULL, &ecf), "");
expect_zu_eq(ecf_count(&ecf), 0, "");
expect_zu_eq(atomic_load_zu(&ec.count, ATOMIC_RELAXED), 0, "");
test_edata_cache_destroy(&ec);
}
TEST_END
TEST_BEGIN(test_edata_cache_fill) {
edata_cache_t ec;
edata_cache_fast_t ecf;
test_edata_cache_init(&ec);
edata_cache_fast_init(&ecf, &ec);
edata_t *allocs[EDATA_CACHE_FAST_FILL * 2];
/*
* If the fallback cache can't satisfy the request, we shouldn't do
* extra allocations until compelled to. Put half the fill goal in the
* fallback.
*/
for (int i = 0; i < EDATA_CACHE_FAST_FILL / 2; i++) {
allocs[i] = edata_cache_get(TSDN_NULL, &ec);
}
for (int i = 0; i < EDATA_CACHE_FAST_FILL / 2; i++) {
edata_cache_put(TSDN_NULL, &ec, allocs[i]);
}
expect_zu_eq(EDATA_CACHE_FAST_FILL / 2,
atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
allocs[0] = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_zu_eq(EDATA_CACHE_FAST_FILL / 2 - 1, ecf_count(&ecf),
"Should have grabbed all edatas available but no more.");
for (int i = 1; i < EDATA_CACHE_FAST_FILL / 2; i++) {
allocs[i] = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_ptr_not_null(allocs[i], "");
}
expect_zu_eq(0, ecf_count(&ecf), "");
/* When forced, we should alloc from the base. */
edata_t *edata = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_ptr_not_null(edata, "");
expect_zu_eq(0, ecf_count(&ecf), "Allocated more than necessary");
expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED),
"Allocated more than necessary");
/*
* We should correctly fill in the common case where the fallback isn't
* exhausted, too.
*/
for (int i = 0; i < EDATA_CACHE_FAST_FILL * 2; i++) {
allocs[i] = edata_cache_get(TSDN_NULL, &ec);
expect_ptr_not_null(allocs[i], "");
}
for (int i = 0; i < EDATA_CACHE_FAST_FILL * 2; i++) {
edata_cache_put(TSDN_NULL, &ec, allocs[i]);
}
allocs[0] = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_zu_eq(EDATA_CACHE_FAST_FILL - 1, ecf_count(&ecf), "");
expect_zu_eq(EDATA_CACHE_FAST_FILL,
atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
for (int i = 1; i < EDATA_CACHE_FAST_FILL; i++) {
expect_zu_eq(EDATA_CACHE_FAST_FILL - i, ecf_count(&ecf), "");
expect_zu_eq(EDATA_CACHE_FAST_FILL,
atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
allocs[i] = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_ptr_not_null(allocs[i], "");
}
expect_zu_eq(0, ecf_count(&ecf), "");
expect_zu_eq(EDATA_CACHE_FAST_FILL,
atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
allocs[0] = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_zu_eq(EDATA_CACHE_FAST_FILL - 1, ecf_count(&ecf), "");
expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
for (int i = 1; i < EDATA_CACHE_FAST_FILL; i++) {
expect_zu_eq(EDATA_CACHE_FAST_FILL - i, ecf_count(&ecf), "");
expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
allocs[i] = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_ptr_not_null(allocs[i], "");
}
expect_zu_eq(0, ecf_count(&ecf), "");
expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
test_edata_cache_destroy(&ec);
}
TEST_END
TEST_BEGIN(test_edata_cache_disable) {
edata_cache_t ec;
edata_cache_fast_t ecf;
test_edata_cache_init(&ec);
edata_cache_fast_init(&ecf, &ec);
for (int i = 0; i < EDATA_CACHE_FAST_FILL; i++) {
edata_t *edata = edata_cache_get(TSDN_NULL, &ec);
expect_ptr_not_null(edata, "");
edata_cache_fast_put(TSDN_NULL, &ecf, edata);
}
expect_zu_eq(EDATA_CACHE_FAST_FILL, ecf_count(&ecf), "");
expect_zu_eq(0, atomic_load_zu(&ec.count, ATOMIC_RELAXED), "");
edata_cache_fast_disable(TSDN_NULL, &ecf);
expect_zu_eq(0, ecf_count(&ecf), "");
expect_zu_eq(EDATA_CACHE_FAST_FILL,
atomic_load_zu(&ec.count, ATOMIC_RELAXED), "Disabling should flush");
edata_t *edata = edata_cache_fast_get(TSDN_NULL, &ecf);
expect_zu_eq(0, ecf_count(&ecf), "");
expect_zu_eq(EDATA_CACHE_FAST_FILL - 1,
atomic_load_zu(&ec.count, ATOMIC_RELAXED),
"Disabled ecf should forward on get");
edata_cache_fast_put(TSDN_NULL, &ecf, edata);
expect_zu_eq(0, ecf_count(&ecf), "");
expect_zu_eq(EDATA_CACHE_FAST_FILL,
atomic_load_zu(&ec.count, ATOMIC_RELAXED),
"Disabled ecf should forward on put");
test_edata_cache_destroy(&ec);
}
TEST_END
int
main(void) {
return test(
test_edata_cache,
test_edata_cache_fast_simple,
test_edata_cache_fill,
test_edata_cache_disable);
}
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