e3195fa4a5
This fixes compilation warnings regarding integer overflow that were
introduced by 0c516a00c4 (Make *allocx()
size class overflow behavior defined.).
113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
#include "test/jemalloc_test.h"
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static size_t
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get_max_size_class(void)
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{
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unsigned nhchunks;
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size_t mib[4];
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size_t sz, miblen, max_size_class;
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sz = sizeof(unsigned);
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assert_d_eq(mallctl("arenas.nhchunks", &nhchunks, &sz, NULL, 0), 0,
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"Unexpected mallctl() error");
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miblen = sizeof(mib) / sizeof(size_t);
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assert_d_eq(mallctlnametomib("arenas.hchunk.0.size", mib, &miblen), 0,
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"Unexpected mallctlnametomib() error");
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mib[2] = nhchunks - 1;
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sz = sizeof(size_t);
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assert_d_eq(mallctlbymib(mib, miblen, &max_size_class, &sz, NULL, 0), 0,
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"Unexpected mallctlbymib() error");
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return (max_size_class);
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}
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TEST_BEGIN(test_size_classes)
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{
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size_t size_class, max_size_class;
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szind_t index, max_index;
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max_size_class = get_max_size_class();
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max_index = size2index(max_size_class);
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for (index = 0, size_class = index2size(index); index < max_index ||
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size_class < max_size_class; index++, size_class =
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index2size(index)) {
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assert_true(index < max_index,
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"Loop conditionals should be equivalent; index=%u, "
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"size_class=%zu (%#zx)", index, size_class, size_class);
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assert_true(size_class < max_size_class,
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"Loop conditionals should be equivalent; index=%u, "
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"size_class=%zu (%#zx)", index, size_class, size_class);
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assert_u_eq(index, size2index(size_class),
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"size2index() does not reverse index2size(): index=%u -->"
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" size_class=%zu --> index=%u --> size_class=%zu", index,
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size_class, size2index(size_class),
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index2size(size2index(size_class)));
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assert_zu_eq(size_class, index2size(size2index(size_class)),
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"index2size() does not reverse size2index(): index=%u -->"
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" size_class=%zu --> index=%u --> size_class=%zu", index,
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size_class, size2index(size_class),
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index2size(size2index(size_class)));
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assert_u_eq(index+1, size2index(size_class+1),
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"Next size_class does not round up properly");
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assert_zu_eq(size_class, (index > 0) ?
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s2u(index2size(index-1)+1) : s2u(1),
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"s2u() does not round up to size class");
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assert_zu_eq(size_class, s2u(size_class-1),
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"s2u() does not round up to size class");
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assert_zu_eq(size_class, s2u(size_class),
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"s2u() does not compute same size class");
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assert_zu_eq(s2u(size_class+1), index2size(index+1),
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"s2u() does not round up to next size class");
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}
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assert_u_eq(index, size2index(index2size(index)),
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"size2index() does not reverse index2size()");
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assert_zu_eq(max_size_class, index2size(size2index(max_size_class)),
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"index2size() does not reverse size2index()");
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assert_zu_eq(size_class, s2u(index2size(index-1)+1),
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"s2u() does not round up to size class");
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assert_zu_eq(size_class, s2u(size_class-1),
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"s2u() does not round up to size class");
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assert_zu_eq(size_class, s2u(size_class),
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"s2u() does not compute same size class");
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}
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TEST_END
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TEST_BEGIN(test_overflow)
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{
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size_t max_size_class;
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max_size_class = get_max_size_class();
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assert_u_ge(size2index(max_size_class+1), NSIZES,
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"size2index() should return >= NSIZES on overflow");
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assert_u_ge(size2index(ZU(PTRDIFF_MAX)+1), NSIZES,
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"size2index() should return >= NSIZES on overflow");
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assert_u_ge(size2index(SIZE_T_MAX), NSIZES,
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"size2index() should return >= NSIZES on overflow");
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assert_zu_gt(s2u(max_size_class+1), HUGE_MAXCLASS,
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"s2u() should return > HUGE_MAXCLASS for unsupported size");
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assert_zu_gt(s2u(ZU(PTRDIFF_MAX)+1), HUGE_MAXCLASS,
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"s2u() should return > HUGE_MAXCLASS for unsupported size");
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assert_zu_eq(s2u(SIZE_T_MAX), 0,
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"s2u() should return 0 on overflow");
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}
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TEST_END
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int
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main(void)
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{
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return (test(
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test_size_classes,
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test_overflow));
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}
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