diff options
Diffstat (limited to 'memory/jemalloc/src/test/integration/mallocx.c')
| -rw-r--r-- | memory/jemalloc/src/test/integration/mallocx.c | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/memory/jemalloc/src/test/integration/mallocx.c b/memory/jemalloc/src/test/integration/mallocx.c new file mode 100644 index 000000000..43b76ebac --- /dev/null +++ b/memory/jemalloc/src/test/integration/mallocx.c @@ -0,0 +1,234 @@ +#include "test/jemalloc_test.h" + +#ifdef JEMALLOC_FILL +const char *malloc_conf = "junk:false"; +#endif + +static unsigned +get_nsizes_impl(const char *cmd) +{ + unsigned ret; + size_t z; + + z = sizeof(unsigned); + assert_d_eq(mallctl(cmd, &ret, &z, NULL, 0), 0, + "Unexpected mallctl(\"%s\", ...) failure", cmd); + + return (ret); +} + +static unsigned +get_nhuge(void) +{ + + return (get_nsizes_impl("arenas.nhchunks")); +} + +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, &ret, &z, NULL, 0), + 0, "Unexpected mallctlbymib([\"%s\", %zu], ...) failure", cmd, ind); + + return (ret); +} + +static size_t +get_huge_size(size_t ind) +{ + + return (get_size_impl("arenas.hchunk.0.size", ind)); +} + +/* + * On systems which can't merge extents, tests that call this function generate + * a lot of dirty memory very quickly. Purging between cycles mitigates + * potential OOM on e.g. 32-bit Windows. + */ +static void +purge(void) +{ + + assert_d_eq(mallctl("arena.0.purge", NULL, NULL, NULL, 0), 0, + "Unexpected mallctl error"); +} + +TEST_BEGIN(test_overflow) +{ + size_t hugemax; + + hugemax = get_huge_size(get_nhuge()-1); + + assert_ptr_null(mallocx(hugemax+1, 0), + "Expected OOM for mallocx(size=%#zx, 0)", hugemax+1); + + assert_ptr_null(mallocx(ZU(PTRDIFF_MAX)+1, 0), + "Expected OOM for mallocx(size=%#zx, 0)", ZU(PTRDIFF_MAX)+1); + + assert_ptr_null(mallocx(SIZE_T_MAX, 0), + "Expected OOM for mallocx(size=%#zx, 0)", SIZE_T_MAX); + + assert_ptr_null(mallocx(1, MALLOCX_ALIGN(ZU(PTRDIFF_MAX)+1)), + "Expected OOM for mallocx(size=1, MALLOCX_ALIGN(%#zx))", + ZU(PTRDIFF_MAX)+1); +} +TEST_END + +TEST_BEGIN(test_oom) +{ + size_t hugemax; + bool oom; + void *ptrs[3]; + unsigned i; + + /* + * It should be impossible to allocate three objects that each consume + * nearly half the virtual address space. + */ + hugemax = get_huge_size(get_nhuge()-1); + oom = false; + for (i = 0; i < sizeof(ptrs) / sizeof(void *); i++) { + ptrs[i] = mallocx(hugemax, 0); + if (ptrs[i] == NULL) + oom = true; + } + assert_true(oom, + "Expected OOM during series of calls to mallocx(size=%zu, 0)", + hugemax); + for (i = 0; i < sizeof(ptrs) / sizeof(void *); i++) { + if (ptrs[i] != NULL) + dallocx(ptrs[i], 0); + } + purge(); + +#if LG_SIZEOF_PTR == 3 + assert_ptr_null(mallocx(0x8000000000000000ULL, + MALLOCX_ALIGN(0x8000000000000000ULL)), + "Expected OOM for mallocx()"); + assert_ptr_null(mallocx(0x8000000000000000ULL, + MALLOCX_ALIGN(0x80000000)), + "Expected OOM for mallocx()"); +#else + assert_ptr_null(mallocx(0x80000000UL, MALLOCX_ALIGN(0x80000000UL)), + "Expected OOM for mallocx()"); +#endif +} +TEST_END + +TEST_BEGIN(test_basic) +{ +#define MAXSZ (((size_t)1) << 23) + size_t sz; + + for (sz = 1; sz < MAXSZ; sz = nallocx(sz, 0) + 1) { + size_t nsz, rsz; + void *p; + nsz = nallocx(sz, 0); + assert_zu_ne(nsz, 0, "Unexpected nallocx() error"); + p = mallocx(sz, 0); + assert_ptr_not_null(p, + "Unexpected mallocx(size=%zx, flags=0) error", sz); + 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(size=%zx, flags=0) error", sz); + 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(size=%zx, flags=MALLOCX_ZERO) error", + nsz); + rsz = sallocx(p, 0); + assert_zu_eq(nsz, rsz, "nallocx()/sallocx() rsize mismatch"); + dallocx(p, 0); + purge(); + } +#undef MAXSZ +} +TEST_END + +TEST_BEGIN(test_alignment_and_size) +{ +#define MAXALIGN (((size_t)1) << 23) +#define NITER 4 + 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; + } + } + } + purge(); + } +#undef MAXALIGN +#undef NITER +} +TEST_END + +int +main(void) +{ + + return (test( + test_overflow, + test_oom, + test_basic, + test_alignment_and_size)); +} |