server-skynet-source-3rd-je.../test/integration/xallocx.c
Jason Evans de49674fbd Use MALLOC_CONF rather than malloc_conf for tests.
malloc_conf does not reliably work with MSVC, which complains of
"inconsistent dll linkage", i.e. its inability to support the
application overriding malloc_conf when dynamically linking/loading.
Work around this limitation by adding test harness support for per test
shell script sourcing, and converting all tests to use MALLOC_CONF
instead of malloc_conf.
2017-02-23 08:57:02 -08:00

385 lines
9.8 KiB
C

#include "test/jemalloc_test.h"
/*
* Use a separate arena for xallocx() extension/contraction tests so that
* internal allocation e.g. by heap profiling can't interpose allocations where
* xallocx() would ordinarily be able to extend.
*/
static unsigned
arena_ind(void) {
static unsigned ind = 0;
if (ind == 0) {
size_t sz = sizeof(ind);
assert_d_eq(mallctl("arenas.create", (void *)&ind, &sz, NULL,
0), 0, "Unexpected mallctl failure creating arena");
}
return ind;
}
TEST_BEGIN(test_same_size) {
void *p;
size_t sz, tsz;
p = mallocx(42, 0);
assert_ptr_not_null(p, "Unexpected mallocx() error");
sz = sallocx(p, 0);
tsz = xallocx(p, sz, 0, 0);
assert_zu_eq(tsz, sz, "Unexpected size change: %zu --> %zu", sz, tsz);
dallocx(p, 0);
}
TEST_END
TEST_BEGIN(test_extra_no_move) {
void *p;
size_t sz, tsz;
p = mallocx(42, 0);
assert_ptr_not_null(p, "Unexpected mallocx() error");
sz = sallocx(p, 0);
tsz = xallocx(p, sz, sz-42, 0);
assert_zu_eq(tsz, sz, "Unexpected size change: %zu --> %zu", sz, tsz);
dallocx(p, 0);
}
TEST_END
TEST_BEGIN(test_no_move_fail) {
void *p;
size_t sz, tsz;
p = mallocx(42, 0);
assert_ptr_not_null(p, "Unexpected mallocx() error");
sz = sallocx(p, 0);
tsz = xallocx(p, sz + 5, 0, 0);
assert_zu_eq(tsz, sz, "Unexpected size change: %zu --> %zu", sz, tsz);
dallocx(p, 0);
}
TEST_END
static unsigned
get_nsizes_impl(const char *cmd) {
unsigned ret;
size_t z;
z = sizeof(unsigned);
assert_d_eq(mallctl(cmd, (void *)&ret, &z, NULL, 0), 0,
"Unexpected mallctl(\"%s\", ...) failure", cmd);
return ret;
}
static unsigned
get_nsmall(void) {
return get_nsizes_impl("arenas.nbins");
}
static unsigned
get_nlarge(void) {
return get_nsizes_impl("arenas.nlextents");
}
static size_t
get_size_impl(const char *cmd, size_t ind) {
size_t ret;
size_t z;
size_t mib[4];
size_t miblen = 4;
z = sizeof(size_t);
assert_d_eq(mallctlnametomib(cmd, mib, &miblen),
0, "Unexpected mallctlnametomib(\"%s\", ...) failure", cmd);
mib[2] = ind;
z = sizeof(size_t);
assert_d_eq(mallctlbymib(mib, miblen, (void *)&ret, &z, NULL, 0),
0, "Unexpected mallctlbymib([\"%s\", %zu], ...) failure", cmd, ind);
return ret;
}
static size_t
get_small_size(size_t ind) {
return get_size_impl("arenas.bin.0.size", ind);
}
static size_t
get_large_size(size_t ind) {
return get_size_impl("arenas.lextent.0.size", ind);
}
TEST_BEGIN(test_size) {
size_t small0, largemax;
void *p;
/* Get size classes. */
small0 = get_small_size(0);
largemax = get_large_size(get_nlarge()-1);
p = mallocx(small0, 0);
assert_ptr_not_null(p, "Unexpected mallocx() error");
/* Test smallest supported size. */
assert_zu_eq(xallocx(p, 1, 0, 0), small0,
"Unexpected xallocx() behavior");
/* Test largest supported size. */
assert_zu_le(xallocx(p, largemax, 0, 0), largemax,
"Unexpected xallocx() behavior");
/* Test size overflow. */
assert_zu_le(xallocx(p, largemax+1, 0, 0), largemax,
"Unexpected xallocx() behavior");
assert_zu_le(xallocx(p, SIZE_T_MAX, 0, 0), largemax,
"Unexpected xallocx() behavior");
dallocx(p, 0);
}
TEST_END
TEST_BEGIN(test_size_extra_overflow) {
size_t small0, largemax;
void *p;
/* Get size classes. */
small0 = get_small_size(0);
largemax = get_large_size(get_nlarge()-1);
p = mallocx(small0, 0);
assert_ptr_not_null(p, "Unexpected mallocx() error");
/* Test overflows that can be resolved by clamping extra. */
assert_zu_le(xallocx(p, largemax-1, 2, 0), largemax,
"Unexpected xallocx() behavior");
assert_zu_le(xallocx(p, largemax, 1, 0), largemax,
"Unexpected xallocx() behavior");
/* Test overflow such that largemax-size underflows. */
assert_zu_le(xallocx(p, largemax+1, 2, 0), largemax,
"Unexpected xallocx() behavior");
assert_zu_le(xallocx(p, largemax+2, 3, 0), largemax,
"Unexpected xallocx() behavior");
assert_zu_le(xallocx(p, SIZE_T_MAX-2, 2, 0), largemax,
"Unexpected xallocx() behavior");
assert_zu_le(xallocx(p, SIZE_T_MAX-1, 1, 0), largemax,
"Unexpected xallocx() behavior");
dallocx(p, 0);
}
TEST_END
TEST_BEGIN(test_extra_small) {
size_t small0, small1, largemax;
void *p;
/* Get size classes. */
small0 = get_small_size(0);
small1 = get_small_size(1);
largemax = get_large_size(get_nlarge()-1);
p = mallocx(small0, 0);
assert_ptr_not_null(p, "Unexpected mallocx() error");
assert_zu_eq(xallocx(p, small1, 0, 0), small0,
"Unexpected xallocx() behavior");
assert_zu_eq(xallocx(p, small1, 0, 0), small0,
"Unexpected xallocx() behavior");
assert_zu_eq(xallocx(p, small0, small1 - small0, 0), small0,
"Unexpected xallocx() behavior");
/* Test size+extra overflow. */
assert_zu_eq(xallocx(p, small0, largemax - small0 + 1, 0), small0,
"Unexpected xallocx() behavior");
assert_zu_eq(xallocx(p, small0, SIZE_T_MAX - small0, 0), small0,
"Unexpected xallocx() behavior");
dallocx(p, 0);
}
TEST_END
TEST_BEGIN(test_extra_large) {
int flags = MALLOCX_ARENA(arena_ind());
size_t smallmax, large1, large2, large3, largemax;
void *p;
/* Get size classes. */
smallmax = get_small_size(get_nsmall()-1);
large1 = get_large_size(1);
large2 = get_large_size(2);
large3 = get_large_size(3);
largemax = get_large_size(get_nlarge()-1);
p = mallocx(large3, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
assert_zu_eq(xallocx(p, large3, 0, flags), large3,
"Unexpected xallocx() behavior");
/* Test size decrease with zero extra. */
assert_zu_ge(xallocx(p, large1, 0, flags), large1,
"Unexpected xallocx() behavior");
assert_zu_ge(xallocx(p, smallmax, 0, flags), large1,
"Unexpected xallocx() behavior");
if (xallocx(p, large3, 0, flags) != large3) {
p = rallocx(p, large3, flags);
assert_ptr_not_null(p, "Unexpected rallocx() failure");
}
/* Test size decrease with non-zero extra. */
assert_zu_eq(xallocx(p, large1, large3 - large1, flags), large3,
"Unexpected xallocx() behavior");
assert_zu_eq(xallocx(p, large2, large3 - large2, flags), large3,
"Unexpected xallocx() behavior");
assert_zu_ge(xallocx(p, large1, large2 - large1, flags), large2,
"Unexpected xallocx() behavior");
assert_zu_ge(xallocx(p, smallmax, large1 - smallmax, flags), large1,
"Unexpected xallocx() behavior");
assert_zu_ge(xallocx(p, large1, 0, flags), large1,
"Unexpected xallocx() behavior");
/* Test size increase with zero extra. */
assert_zu_le(xallocx(p, large3, 0, flags), large3,
"Unexpected xallocx() behavior");
assert_zu_le(xallocx(p, largemax+1, 0, flags), large3,
"Unexpected xallocx() behavior");
assert_zu_ge(xallocx(p, large1, 0, flags), large1,
"Unexpected xallocx() behavior");
/* Test size increase with non-zero extra. */
assert_zu_le(xallocx(p, large1, SIZE_T_MAX - large1, flags), largemax,
"Unexpected xallocx() behavior");
assert_zu_ge(xallocx(p, large1, 0, flags), large1,
"Unexpected xallocx() behavior");
/* Test size increase with non-zero extra. */
assert_zu_le(xallocx(p, large1, large3 - large1, flags), large3,
"Unexpected xallocx() behavior");
if (xallocx(p, large3, 0, flags) != large3) {
p = rallocx(p, large3, flags);
assert_ptr_not_null(p, "Unexpected rallocx() failure");
}
/* Test size+extra overflow. */
assert_zu_le(xallocx(p, large3, largemax - large3 + 1, flags), largemax,
"Unexpected xallocx() behavior");
dallocx(p, flags);
}
TEST_END
static void
print_filled_extents(const void *p, uint8_t c, size_t len) {
const uint8_t *pc = (const uint8_t *)p;
size_t i, range0;
uint8_t c0;
malloc_printf(" p=%p, c=%#x, len=%zu:", p, c, len);
range0 = 0;
c0 = pc[0];
for (i = 0; i < len; i++) {
if (pc[i] != c0) {
malloc_printf(" %#x[%zu..%zu)", c0, range0, i);
range0 = i;
c0 = pc[i];
}
}
malloc_printf(" %#x[%zu..%zu)\n", c0, range0, i);
}
static bool
validate_fill(const void *p, uint8_t c, size_t offset, size_t len) {
const uint8_t *pc = (const uint8_t *)p;
bool err;
size_t i;
for (i = offset, err = false; i < offset+len; i++) {
if (pc[i] != c) {
err = true;
}
}
if (err) {
print_filled_extents(p, c, offset + len);
}
return err;
}
static void
test_zero(size_t szmin, size_t szmax) {
int flags = MALLOCX_ARENA(arena_ind()) | MALLOCX_ZERO;
size_t sz, nsz;
void *p;
#define FILL_BYTE 0x7aU
sz = szmax;
p = mallocx(sz, flags);
assert_ptr_not_null(p, "Unexpected mallocx() error");
assert_false(validate_fill(p, 0x00, 0, sz), "Memory not filled: sz=%zu",
sz);
/*
* Fill with non-zero so that non-debug builds are more likely to detect
* errors.
*/
memset(p, FILL_BYTE, sz);
assert_false(validate_fill(p, FILL_BYTE, 0, sz),
"Memory not filled: sz=%zu", sz);
/* Shrink in place so that we can expect growing in place to succeed. */
sz = szmin;
if (xallocx(p, sz, 0, flags) != sz) {
p = rallocx(p, sz, flags);
assert_ptr_not_null(p, "Unexpected rallocx() failure");
}
assert_false(validate_fill(p, FILL_BYTE, 0, sz),
"Memory not filled: sz=%zu", sz);
for (sz = szmin; sz < szmax; sz = nsz) {
nsz = nallocx(sz+1, flags);
if (xallocx(p, sz+1, 0, flags) != nsz) {
p = rallocx(p, sz+1, flags);
assert_ptr_not_null(p, "Unexpected rallocx() failure");
}
assert_false(validate_fill(p, FILL_BYTE, 0, sz),
"Memory not filled: sz=%zu", sz);
assert_false(validate_fill(p, 0x00, sz, nsz-sz),
"Memory not filled: sz=%zu, nsz-sz=%zu", sz, nsz-sz);
memset((void *)((uintptr_t)p + sz), FILL_BYTE, nsz-sz);
assert_false(validate_fill(p, FILL_BYTE, 0, nsz),
"Memory not filled: nsz=%zu", nsz);
}
dallocx(p, flags);
}
TEST_BEGIN(test_zero_large) {
size_t large0, large1;
/* Get size classes. */
large0 = get_large_size(0);
large1 = get_large_size(1);
test_zero(large1, large0 * 2);
}
TEST_END
int
main(void) {
return test(
test_same_size,
test_extra_no_move,
test_no_move_fail,
test_size,
test_size_extra_overflow,
test_extra_small,
test_extra_large,
test_zero_large);
}