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#include "test/jemalloc_test.h"
#include "test/extent_hooks.h"
#include "jemalloc/internal/arena_types.h"
static void
test_extent_body(unsigned arena_ind) {
void *p;
size_t large0, large1, large2, sz;
size_t purge_mib[3];
size_t purge_miblen;
int flags;
bool xallocx_success_a, xallocx_success_b, xallocx_success_c;
flags = MALLOCX_ARENA(arena_ind) | MALLOCX_TCACHE_NONE;
/* Get large size classes. */
sz = sizeof(size_t);
expect_d_eq(mallctl("arenas.lextent.0.size", (void *)&large0, &sz, NULL,
0), 0, "Unexpected arenas.lextent.0.size failure");
expect_d_eq(mallctl("arenas.lextent.1.size", (void *)&large1, &sz, NULL,
0), 0, "Unexpected arenas.lextent.1.size failure");
expect_d_eq(mallctl("arenas.lextent.2.size", (void *)&large2, &sz, NULL,
0), 0, "Unexpected arenas.lextent.2.size failure");
/* Test dalloc/decommit/purge cascade. */
purge_miblen = sizeof(purge_mib)/sizeof(size_t);
expect_d_eq(mallctlnametomib("arena.0.purge", purge_mib, &purge_miblen),
0, "Unexpected mallctlnametomib() failure");
purge_mib[1] = (size_t)arena_ind;
called_alloc = false;
try_alloc = true;
try_dalloc = false;
try_decommit = false;
p = mallocx(large0 * 2, flags);
expect_ptr_not_null(p, "Unexpected mallocx() error");
expect_true(called_alloc, "Expected alloc call");
called_dalloc = false;
called_decommit = false;
did_purge_lazy = false;
did_purge_forced = false;
called_split = false;
xallocx_success_a = (xallocx(p, large0, 0, flags) == large0);
expect_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
0, "Unexpected arena.%u.purge error", arena_ind);
if (xallocx_success_a) {
expect_true(called_dalloc, "Expected dalloc call");
expect_true(called_decommit, "Expected decommit call");
expect_true(did_purge_lazy || did_purge_forced,
"Expected purge");
expect_true(called_split, "Expected split call");
}
dallocx(p, flags);
try_dalloc = true;
/* Test decommit/commit and observe split/merge. */
try_dalloc = false;
try_decommit = true;
p = mallocx(large0 * 2, flags);
expect_ptr_not_null(p, "Unexpected mallocx() error");
did_decommit = false;
did_commit = false;
called_split = false;
did_split = false;
did_merge = false;
xallocx_success_b = (xallocx(p, large0, 0, flags) == large0);
expect_d_eq(mallctlbymib(purge_mib, purge_miblen, NULL, NULL, NULL, 0),
0, "Unexpected arena.%u.purge error", arena_ind);
if (xallocx_success_b) {
expect_true(did_split, "Expected split");
}
xallocx_success_c = (xallocx(p, large0 * 2, 0, flags) == large0 * 2);
if (did_split) {
expect_b_eq(did_decommit, did_commit,
"Expected decommit/commit match");
}
if (xallocx_success_b && xallocx_success_c) {
expect_true(did_merge, "Expected merge");
}
dallocx(p, flags);
try_dalloc = true;
try_decommit = false;
/* Make sure non-large allocation succeeds. */
p = mallocx(42, flags);
expect_ptr_not_null(p, "Unexpected mallocx() error");
dallocx(p, flags);
}
static void
test_manual_hook_auto_arena(void) {
unsigned narenas;
size_t old_size, new_size, sz;
size_t hooks_mib[3];
size_t hooks_miblen;
extent_hooks_t *new_hooks, *old_hooks;
extent_hooks_prep();
sz = sizeof(unsigned);
/* Get number of auto arenas. */
expect_d_eq(mallctl("opt.narenas", (void *)&narenas, &sz, NULL, 0),
0, "Unexpected mallctl() failure");
if (narenas == 1) {
return;
}
/* Install custom extent hooks on arena 1 (might not be initialized). */
hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
expect_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
&hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
hooks_mib[1] = 1;
old_size = sizeof(extent_hooks_t *);
new_hooks = &hooks;
new_size = sizeof(extent_hooks_t *);
expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
&old_size, (void *)&new_hooks, new_size), 0,
"Unexpected extent_hooks error");
static bool auto_arena_created = false;
if (old_hooks != &hooks) {
expect_b_eq(auto_arena_created, false,
"Expected auto arena 1 created only once.");
auto_arena_created = true;
}
}
static void
test_manual_hook_body(void) {
unsigned arena_ind;
size_t old_size, new_size, sz;
size_t hooks_mib[3];
size_t hooks_miblen;
extent_hooks_t *new_hooks, *old_hooks;
extent_hooks_prep();
sz = sizeof(unsigned);
expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz, NULL, 0),
0, "Unexpected mallctl() failure");
/* Install custom extent hooks. */
hooks_miblen = sizeof(hooks_mib)/sizeof(size_t);
expect_d_eq(mallctlnametomib("arena.0.extent_hooks", hooks_mib,
&hooks_miblen), 0, "Unexpected mallctlnametomib() failure");
hooks_mib[1] = (size_t)arena_ind;
old_size = sizeof(extent_hooks_t *);
new_hooks = &hooks;
new_size = sizeof(extent_hooks_t *);
expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
&old_size, (void *)&new_hooks, new_size), 0,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->alloc, extent_alloc_hook,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->dalloc, extent_dalloc_hook,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->commit, extent_commit_hook,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->decommit, extent_decommit_hook,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->purge_lazy, extent_purge_lazy_hook,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->purge_forced, extent_purge_forced_hook,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->split, extent_split_hook,
"Unexpected extent_hooks error");
expect_ptr_ne(old_hooks->merge, extent_merge_hook,
"Unexpected extent_hooks error");
if (!is_background_thread_enabled()) {
test_extent_body(arena_ind);
}
/* Restore extent hooks. */
expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, NULL, NULL,
(void *)&old_hooks, new_size), 0, "Unexpected extent_hooks error");
expect_d_eq(mallctlbymib(hooks_mib, hooks_miblen, (void *)&old_hooks,
&old_size, NULL, 0), 0, "Unexpected extent_hooks error");
expect_ptr_eq(old_hooks, default_hooks, "Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->alloc, default_hooks->alloc,
"Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->dalloc, default_hooks->dalloc,
"Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->commit, default_hooks->commit,
"Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->decommit, default_hooks->decommit,
"Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->purge_lazy, default_hooks->purge_lazy,
"Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->purge_forced, default_hooks->purge_forced,
"Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->split, default_hooks->split,
"Unexpected extent_hooks error");
expect_ptr_eq(old_hooks->merge, default_hooks->merge,
"Unexpected extent_hooks error");
}
TEST_BEGIN(test_extent_manual_hook) {
test_manual_hook_auto_arena();
test_manual_hook_body();
/* Test failure paths. */
try_split = false;
test_manual_hook_body();
try_merge = false;
test_manual_hook_body();
try_purge_lazy = false;
try_purge_forced = false;
test_manual_hook_body();
try_split = try_merge = try_purge_lazy = try_purge_forced = true;
}
TEST_END
TEST_BEGIN(test_extent_auto_hook) {
unsigned arena_ind;
size_t new_size, sz;
extent_hooks_t *new_hooks;
extent_hooks_prep();
sz = sizeof(unsigned);
new_hooks = &hooks;
new_size = sizeof(extent_hooks_t *);
expect_d_eq(mallctl("arenas.create", (void *)&arena_ind, &sz,
(void *)&new_hooks, new_size), 0, "Unexpected mallctl() failure");
test_skip_if(is_background_thread_enabled());
test_extent_body(arena_ind);
}
TEST_END
static void
test_arenas_create_ext_base(arena_config_t config,
bool expect_hook_data, bool expect_hook_metadata)
{
unsigned arena, arena1;
void *ptr;
size_t sz = sizeof(unsigned);
extent_hooks_prep();
called_alloc = false;
expect_d_eq(mallctl("experimental.arenas_create_ext",
(void *)&arena, &sz, &config, sizeof(arena_config_t)), 0,
"Unexpected mallctl() failure");
expect_b_eq(called_alloc, expect_hook_metadata,
"expected hook metadata alloc mismatch");
called_alloc = false;
ptr = mallocx(42, MALLOCX_ARENA(arena) | MALLOCX_TCACHE_NONE);
expect_b_eq(called_alloc, expect_hook_data,
"expected hook data alloc mismatch");
expect_ptr_not_null(ptr, "Unexpected mallocx() failure");
expect_d_eq(mallctl("arenas.lookup", &arena1, &sz, &ptr, sizeof(ptr)),
0, "Unexpected mallctl() failure");
expect_u_eq(arena, arena1, "Unexpected arena index");
dallocx(ptr, 0);
}
TEST_BEGIN(test_arenas_create_ext_with_ehooks_no_metadata) {
arena_config_t config;
config.extent_hooks = &hooks;
config.metadata_use_hooks = false;
test_arenas_create_ext_base(config, true, false);
}
TEST_END
TEST_BEGIN(test_arenas_create_ext_with_ehooks_with_metadata) {
arena_config_t config;
config.extent_hooks = &hooks;
config.metadata_use_hooks = true;
test_arenas_create_ext_base(config, true, true);
}
TEST_END
int
main(void) {
return test(
test_extent_manual_hook,
test_extent_auto_hook,
test_arenas_create_ext_with_ehooks_no_metadata,
test_arenas_create_ext_with_ehooks_with_metadata);
}
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