67 lines
2.0 KiB
C
67 lines
2.0 KiB
C
#include "test/jemalloc_test.h"
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TEST_BEGIN(test_sz_psz2ind) {
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/*
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* Testing page size classes which reside prior to the regular group
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* with all size classes divisible by page size.
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* For x86_64 Linux, it's 4096, 8192, 12288, 16384, with corresponding
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* pszind 0, 1, 2 and 3.
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*/
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for (size_t i = 0; i < SC_NGROUP; i++) {
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for (size_t psz = i * PAGE + 1; psz <= (i + 1) * PAGE; psz++) {
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pszind_t ind = sz_psz2ind(psz);
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expect_zu_eq(ind, i, "Got %u as sz_psz2ind of %zu", ind,
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psz);
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}
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}
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sc_data_t data;
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memset(&data, 0, sizeof(data));
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sc_data_init(&data);
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/*
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* 'base' is the base of the first regular group with all size classes
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* divisible by page size.
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* For x86_64 Linux, it's 16384, and base_ind is 36.
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*/
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size_t base_psz = 1 << (SC_LG_NGROUP + LG_PAGE);
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size_t base_ind = 0;
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while (base_ind < SC_NSIZES &&
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reg_size_compute(data.sc[base_ind].lg_base,
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data.sc[base_ind].lg_delta,
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data.sc[base_ind].ndelta) < base_psz) {
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base_ind++;
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}
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expect_zu_eq(
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reg_size_compute(data.sc[base_ind].lg_base,
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data.sc[base_ind].lg_delta, data.sc[base_ind].ndelta),
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base_psz, "Size class equal to %zu not found", base_psz);
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/*
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* Test different sizes falling into groups after the 'base'. The
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* increment is PAGE / 3 for the execution speed purpose.
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*/
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base_ind -= SC_NGROUP;
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for (size_t psz = base_psz; psz <= 64 * 1024 * 1024; psz += PAGE / 3) {
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pszind_t ind = sz_psz2ind(psz);
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sc_t gt_sc = data.sc[ind + base_ind];
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expect_zu_gt(psz,
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reg_size_compute(gt_sc.lg_base, gt_sc.lg_delta,
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gt_sc.ndelta),
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"Got %u as sz_psz2ind of %zu", ind, psz);
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sc_t le_sc = data.sc[ind + base_ind + 1];
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expect_zu_le(psz,
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reg_size_compute(le_sc.lg_base, le_sc.lg_delta,
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le_sc.ndelta),
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"Got %u as sz_psz2ind of %zu", ind, psz);
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}
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pszind_t max_ind = sz_psz2ind(SC_LARGE_MAXCLASS + 1);
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expect_lu_eq(max_ind, SC_NPSIZES,
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"Got %u as sz_psz2ind of %llu", max_ind, SC_LARGE_MAXCLASS);
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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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return test(test_sz_psz2ind);
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}
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