d82a5e6a34
Implement the *allocx() API, which is a successor to the *allocm() API.
The *allocx() functions are slightly simpler to use because they have
fewer parameters, they directly return the results of primary interest,
and mallocx()/rallocx() avoid the strict aliasing pitfall that
allocm()/rallocx() share with posix_memalign(). The following code
violates strict aliasing rules:
foo_t *foo;
allocm((void **)&foo, NULL, 42, 0);
whereas the following is safe:
foo_t *foo;
void *p;
allocm(&p, NULL, 42, 0);
foo = (foo_t *)p;
mallocx() does not have this problem:
foo_t *foo = (foo_t *)mallocx(42, 0);
150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
#include "test/jemalloc_test.h"
|
|
|
|
#define CHUNK 0x400000
|
|
/* #define MAXALIGN ((size_t)UINT64_C(0x80000000000)) */
|
|
#define MAXALIGN ((size_t)0x2000000LU)
|
|
#define NITER 4
|
|
|
|
TEST_BEGIN(test_basic)
|
|
{
|
|
size_t nsz, rsz, sz;
|
|
void *p;
|
|
|
|
sz = 42;
|
|
nsz = nallocx(sz, 0);
|
|
assert_zu_ne(nsz, 0, "Unexpected nallocx() error");
|
|
p = mallocx(sz, 0);
|
|
assert_ptr_not_null(p, "Unexpected mallocx() error");
|
|
rsz = sallocx(p, 0);
|
|
assert_zu_ge(rsz, sz, "Real size smaller than expected");
|
|
assert_zu_eq(nsz, rsz, "nallocx()/sallocx() size mismatch");
|
|
dallocx(p, 0);
|
|
|
|
p = mallocx(sz, 0);
|
|
assert_ptr_not_null(p, "Unexpected mallocx() error");
|
|
dallocx(p, 0);
|
|
|
|
nsz = nallocx(sz, MALLOCX_ZERO);
|
|
assert_zu_ne(nsz, 0, "Unexpected nallocx() error");
|
|
p = mallocx(sz, MALLOCX_ZERO);
|
|
assert_ptr_not_null(p, "Unexpected mallocx() error");
|
|
rsz = sallocx(p, 0);
|
|
assert_zu_eq(nsz, rsz, "nallocx()/sallocx() rsize mismatch");
|
|
dallocx(p, 0);
|
|
}
|
|
TEST_END
|
|
|
|
TEST_BEGIN(test_alignment_errors)
|
|
{
|
|
void *p;
|
|
size_t nsz, sz, alignment;
|
|
|
|
#if LG_SIZEOF_PTR == 3
|
|
alignment = UINT64_C(0x8000000000000000);
|
|
sz = UINT64_C(0x8000000000000000);
|
|
#else
|
|
alignment = 0x80000000LU;
|
|
sz = 0x80000000LU;
|
|
#endif
|
|
nsz = nallocx(sz, MALLOCX_ALIGN(alignment));
|
|
assert_zu_eq(nsz, 0, "Expected error for nallocx(%zu, %#x)", sz,
|
|
MALLOCX_ALIGN(alignment));
|
|
p = mallocx(sz, MALLOCX_ALIGN(alignment));
|
|
assert_ptr_null(p, "Expected error for mallocx(%zu, %#x)", sz,
|
|
MALLOCX_ALIGN(alignment));
|
|
|
|
#if LG_SIZEOF_PTR == 3
|
|
alignment = UINT64_C(0x4000000000000000);
|
|
sz = UINT64_C(0x8400000000000001);
|
|
#else
|
|
alignment = 0x40000000LU;
|
|
sz = 0x84000001LU;
|
|
#endif
|
|
nsz = nallocx(sz, MALLOCX_ALIGN(alignment));
|
|
assert_zu_ne(nsz, 0, "Unexpected nallocx() error");
|
|
p = mallocx(sz, MALLOCX_ALIGN(alignment));
|
|
assert_ptr_null(p, "Expected error for mallocx(%zu, %#x)", sz,
|
|
MALLOCX_ALIGN(alignment));
|
|
|
|
alignment = 0x10LU;
|
|
#if LG_SIZEOF_PTR == 3
|
|
sz = UINT64_C(0xfffffffffffffff0);
|
|
#else
|
|
sz = 0xfffffff0LU;
|
|
#endif
|
|
nsz = nallocx(sz, MALLOCX_ALIGN(alignment));
|
|
assert_zu_eq(nsz, 0, "Expected error for nallocx(%zu, %#x)", sz,
|
|
MALLOCX_ALIGN(alignment));
|
|
nsz = nallocx(sz, MALLOCX_ALIGN(alignment));
|
|
assert_zu_eq(nsz, 0, "Expected error for nallocx(%zu, %#x)", sz,
|
|
MALLOCX_ALIGN(alignment));
|
|
p = mallocx(sz, MALLOCX_ALIGN(alignment));
|
|
assert_ptr_null(p, "Expected error for mallocx(%zu, %#x)", sz,
|
|
MALLOCX_ALIGN(alignment));
|
|
}
|
|
TEST_END
|
|
|
|
TEST_BEGIN(test_alignment_and_size)
|
|
{
|
|
size_t nsz, rsz, sz, alignment, total;
|
|
unsigned i;
|
|
void *ps[NITER];
|
|
|
|
for (i = 0; i < NITER; i++)
|
|
ps[i] = NULL;
|
|
|
|
for (alignment = 8;
|
|
alignment <= MAXALIGN;
|
|
alignment <<= 1) {
|
|
total = 0;
|
|
for (sz = 1;
|
|
sz < 3 * alignment && sz < (1U << 31);
|
|
sz += (alignment >> (LG_SIZEOF_PTR-1)) - 1) {
|
|
for (i = 0; i < NITER; i++) {
|
|
nsz = nallocx(sz, MALLOCX_ALIGN(alignment) |
|
|
MALLOCX_ZERO);
|
|
assert_zu_ne(nsz, 0,
|
|
"nallocx() error for alignment=%zu, "
|
|
"size=%zu (%#zx)", alignment, sz, sz);
|
|
ps[i] = mallocx(sz, MALLOCX_ALIGN(alignment) |
|
|
MALLOCX_ZERO);
|
|
assert_ptr_not_null(ps[i],
|
|
"mallocx() error for alignment=%zu, "
|
|
"size=%zu (%#zx)", alignment, sz, sz);
|
|
rsz = sallocx(ps[i], 0);
|
|
assert_zu_ge(rsz, sz,
|
|
"Real size smaller than expected for "
|
|
"alignment=%zu, size=%zu", alignment, sz);
|
|
assert_zu_eq(nsz, rsz,
|
|
"nallocx()/sallocx() size mismatch for "
|
|
"alignment=%zu, size=%zu", alignment, sz);
|
|
assert_ptr_null(
|
|
(void *)((uintptr_t)ps[i] & (alignment-1)),
|
|
"%p inadequately aligned for"
|
|
" alignment=%zu, size=%zu", ps[i],
|
|
alignment, sz);
|
|
total += rsz;
|
|
if (total >= (MAXALIGN << 1))
|
|
break;
|
|
}
|
|
for (i = 0; i < NITER; i++) {
|
|
if (ps[i] != NULL) {
|
|
dallocx(ps[i], 0);
|
|
ps[i] = NULL;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
TEST_END
|
|
|
|
int
|
|
main(void)
|
|
{
|
|
|
|
return (test(
|
|
test_basic,
|
|
test_alignment_errors,
|
|
test_alignment_and_size));
|
|
}
|