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#include "test/jemalloc_test.h"
#include "test/arena_util.h"
#include "jemalloc/internal/arena_structs.h"
#include "jemalloc/internal/san_bump.h"
TEST_BEGIN(test_san_bump_alloc) {
test_skip_if(!maps_coalesce || !opt_retain);
tsdn_t *tsdn = tsdn_fetch();
san_bump_alloc_t sba;
san_bump_alloc_init(&sba);
unsigned arena_ind = do_arena_create(0, 0);
assert_u_ne(arena_ind, UINT_MAX, "Failed to create an arena");
arena_t *arena = arena_get(tsdn, arena_ind, false);
pac_t *pac = &arena->pa_shard.pac;
size_t alloc_size = PAGE * 16;
size_t alloc_n = alloc_size / sizeof(unsigned);
edata_t* edata = san_bump_alloc(tsdn, &sba, pac, pac_ehooks_get(pac),
alloc_size, /* zero */ false);
expect_ptr_not_null(edata, "Failed to allocate edata");
expect_u_eq(edata_arena_ind_get(edata), arena_ind,
"Edata was assigned an incorrect arena id");
expect_zu_eq(edata_size_get(edata), alloc_size,
"Allocated edata of incorrect size");
expect_false(edata_slab_get(edata),
"Bump allocator incorrectly assigned 'slab' to true");
expect_true(edata_committed_get(edata), "Edata is not committed");
void *ptr = edata_addr_get(edata);
expect_ptr_not_null(ptr, "Edata was assigned an invalid address");
/* Test that memory is allocated; no guard pages are misplaced */
for (unsigned i = 0; i < alloc_n; ++i) {
((unsigned *)ptr)[i] = 1;
}
size_t alloc_size2 = PAGE * 28;
size_t alloc_n2 = alloc_size / sizeof(unsigned);
edata_t *edata2 = san_bump_alloc(tsdn, &sba, pac, pac_ehooks_get(pac),
alloc_size2, /* zero */ true);
expect_ptr_not_null(edata2, "Failed to allocate edata");
expect_u_eq(edata_arena_ind_get(edata2), arena_ind,
"Edata was assigned an incorrect arena id");
expect_zu_eq(edata_size_get(edata2), alloc_size2,
"Allocated edata of incorrect size");
expect_false(edata_slab_get(edata2),
"Bump allocator incorrectly assigned 'slab' to true");
expect_true(edata_committed_get(edata2), "Edata is not committed");
void *ptr2 = edata_addr_get(edata2);
expect_ptr_not_null(ptr, "Edata was assigned an invalid address");
uintptr_t ptrdiff = ptr2 > ptr ? (uintptr_t)ptr2 - (uintptr_t)ptr
: (uintptr_t)ptr - (uintptr_t)ptr2;
size_t between_allocs = (size_t)ptrdiff - alloc_size;
expect_zu_ge(between_allocs, PAGE,
"Guard page between allocs is missing");
for (unsigned i = 0; i < alloc_n2; ++i) {
expect_u_eq(((unsigned *)ptr2)[i], 0, "Memory is not zeroed");
}
}
TEST_END
TEST_BEGIN(test_large_alloc_size) {
test_skip_if(!maps_coalesce || !opt_retain);
tsdn_t *tsdn = tsdn_fetch();
san_bump_alloc_t sba;
san_bump_alloc_init(&sba);
unsigned arena_ind = do_arena_create(0, 0);
assert_u_ne(arena_ind, UINT_MAX, "Failed to create an arena");
arena_t *arena = arena_get(tsdn, arena_ind, false);
pac_t *pac = &arena->pa_shard.pac;
size_t alloc_size = SBA_RETAINED_ALLOC_SIZE * 2;
edata_t* edata = san_bump_alloc(tsdn, &sba, pac, pac_ehooks_get(pac),
alloc_size, /* zero */ false);
expect_u_eq(edata_arena_ind_get(edata), arena_ind,
"Edata was assigned an incorrect arena id");
expect_zu_eq(edata_size_get(edata), alloc_size,
"Allocated edata of incorrect size");
expect_false(edata_slab_get(edata),
"Bump allocator incorrectly assigned 'slab' to true");
expect_true(edata_committed_get(edata), "Edata is not committed");
void *ptr = edata_addr_get(edata);
expect_ptr_not_null(ptr, "Edata was assigned an invalid address");
/* Test that memory is allocated; no guard pages are misplaced */
for (unsigned i = 0; i < alloc_size / PAGE; ++i) {
*((char *)ptr + PAGE * i) = 1;
}
}
TEST_END
int
main(void) {
return test(
test_san_bump_alloc,
test_large_alloc_size);
}
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