1 #include "test/jemalloc_test.h" 2 3 static size_t 4 get_max_size_class(void) 5 { 6 unsigned nhchunks; 7 size_t mib[4]; 8 size_t sz, miblen, max_size_class; 9 10 sz = sizeof(unsigned); 11 assert_d_eq(mallctl("arenas.nhchunks", &nhchunks, &sz, NULL, 0), 0, 12 "Unexpected mallctl() error"); 13 14 miblen = sizeof(mib) / sizeof(size_t); 15 assert_d_eq(mallctlnametomib("arenas.hchunk.0.size", mib, &miblen), 0, 16 "Unexpected mallctlnametomib() error"); 17 mib[2] = nhchunks - 1; 18 19 sz = sizeof(size_t); 20 assert_d_eq(mallctlbymib(mib, miblen, &max_size_class, &sz, NULL, 0), 0, 21 "Unexpected mallctlbymib() error"); 22 23 return (max_size_class); 24 } 25 26 TEST_BEGIN(test_size_classes) 27 { 28 size_t size_class, max_size_class; 29 szind_t index, max_index; 30 31 max_size_class = get_max_size_class(); 32 max_index = size2index(max_size_class); 33 34 for (index = 0, size_class = index2size(index); index < max_index || 35 size_class < max_size_class; index++, size_class = 36 index2size(index)) { 37 assert_true(index < max_index, 38 "Loop conditionals should be equivalent; index=%u, " 39 "size_class=%zu (%#zx)", index, size_class, size_class); 40 assert_true(size_class < max_size_class, 41 "Loop conditionals should be equivalent; index=%u, " 42 "size_class=%zu (%#zx)", index, size_class, size_class); 43 44 assert_u_eq(index, size2index(size_class), 45 "size2index() does not reverse index2size(): index=%u -->" 46 " size_class=%zu --> index=%u --> size_class=%zu", index, 47 size_class, size2index(size_class), 48 index2size(size2index(size_class))); 49 assert_zu_eq(size_class, index2size(size2index(size_class)), 50 "index2size() does not reverse size2index(): index=%u -->" 51 " size_class=%zu --> index=%u --> size_class=%zu", index, 52 size_class, size2index(size_class), 53 index2size(size2index(size_class))); 54 55 assert_u_eq(index+1, size2index(size_class+1), 56 "Next size_class does not round up properly"); 57 58 assert_zu_eq(size_class, (index > 0) ? 59 s2u(index2size(index-1)+1) : s2u(1), 60 "s2u() does not round up to size class"); 61 assert_zu_eq(size_class, s2u(size_class-1), 62 "s2u() does not round up to size class"); 63 assert_zu_eq(size_class, s2u(size_class), 64 "s2u() does not compute same size class"); 65 assert_zu_eq(s2u(size_class+1), index2size(index+1), 66 "s2u() does not round up to next size class"); 67 } 68 69 assert_u_eq(index, size2index(index2size(index)), 70 "size2index() does not reverse index2size()"); 71 assert_zu_eq(max_size_class, index2size(size2index(max_size_class)), 72 "index2size() does not reverse size2index()"); 73 74 assert_zu_eq(size_class, s2u(index2size(index-1)+1), 75 "s2u() does not round up to size class"); 76 assert_zu_eq(size_class, s2u(size_class-1), 77 "s2u() does not round up to size class"); 78 assert_zu_eq(size_class, s2u(size_class), 79 "s2u() does not compute same size class"); 80 } 81 TEST_END 82 83 TEST_BEGIN(test_overflow) 84 { 85 size_t max_size_class; 86 87 max_size_class = get_max_size_class(); 88 89 assert_u_ge(size2index(max_size_class+1), NSIZES, 90 "size2index() should return >= NSIZES on overflow"); 91 assert_u_ge(size2index(ZU(PTRDIFF_MAX)+1), NSIZES, 92 "size2index() should return >= NSIZES on overflow"); 93 assert_u_ge(size2index(SIZE_T_MAX), NSIZES, 94 "size2index() should return >= NSIZES on overflow"); 95 96 assert_zu_gt(s2u(max_size_class+1), HUGE_MAXCLASS, 97 "s2u() should return > HUGE_MAXCLASS for unsupported size"); 98 assert_zu_gt(s2u(ZU(PTRDIFF_MAX)+1), HUGE_MAXCLASS, 99 "s2u() should return > HUGE_MAXCLASS for unsupported size"); 100 assert_zu_eq(s2u(SIZE_T_MAX), 0, 101 "s2u() should return 0 on overflow"); 102 } 103 TEST_END 104 105 int 106 main(void) 107 { 108 109 return (test( 110 test_size_classes, 111 test_overflow)); 112 } 113
