mirror of
https://github.com/jart/cosmopolitan.git
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96 lines
5.7 KiB
C
96 lines
5.7 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/mem/mem.h"
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#include "libc/stdio/rand.h"
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#include "libc/runtime/gc.internal.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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TEST(bzero, test) {
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int n;
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char *a, *b;
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a = gc(malloc(128));
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b = gc(malloc(128));
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for (n = 0; n < 128; ++n) {
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rngset(a, 128, rand64, -1);
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memcpy(b, a, 128);
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bzero(a, n);
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memset(b, 0, n);
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ASSERT_EQ(0, memcmp(a, b, 128), "%d", n);
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}
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}
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void explicit_memset(void *, int, size_t) asm("memset");
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char doge[129];
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BENCH(bzero, bench) {
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EZBENCH2("bzero 0", donothing, explicit_bzero(doge, 0));
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EZBENCH2("memset 0", donothing, explicit_memset(doge, 0, 0));
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EZBENCH2("bzero 1", donothing, explicit_bzero(doge, 1));
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EZBENCH2("memset 1", donothing, explicit_memset(doge, 0, 1));
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EZBENCH2("bzero 2", donothing, explicit_bzero(doge, 2));
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EZBENCH2("memset 2", donothing, explicit_memset(doge, 0, 2));
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EZBENCH2("bzero 4", donothing, explicit_bzero(doge, 4));
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EZBENCH2("memset 4", donothing, explicit_memset(doge, 0, 4));
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EZBENCH2("bzero 8", donothing, explicit_bzero(doge, 8));
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EZBENCH2("memset 8", donothing, explicit_memset(doge, 0, 8));
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EZBENCH2("bzero 16", donothing, explicit_bzero(doge, 16));
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EZBENCH2("memset 16", donothing, explicit_memset(doge, 0, 16));
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EZBENCH2("bzero 31", donothing, explicit_bzero(doge, 31));
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EZBENCH2("memset 31", donothing, explicit_memset(doge, 0, 31));
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EZBENCH2("bzero 32", donothing, explicit_bzero(doge, 32));
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EZBENCH2("memset 32", donothing, explicit_memset(doge, 0, 32));
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EZBENCH2("bzero 33", donothing, explicit_bzero(doge, 33));
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EZBENCH2("memset 33", donothing, explicit_memset(doge, 0, 33));
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EZBENCH2("bzero 64", donothing, explicit_bzero(doge, 64));
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EZBENCH2("memset 64", donothing, explicit_memset(doge, 0, 64));
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EZBENCH2("bzero 127", donothing, explicit_bzero(doge, 127));
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EZBENCH2("memset 127", donothing, explicit_memset(doge, 0, 127));
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EZBENCH2("bzero 128", donothing, explicit_bzero(doge, 128));
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EZBENCH2("memset 128", donothing, explicit_memset(doge, 0, 128));
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EZBENCH2("bzero 0 [misalign]", donothing, explicit_bzero(doge + 1, 0));
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EZBENCH2("memset 0 [misalign]", donothing, explicit_memset(doge + 1, 0, 0));
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EZBENCH2("bzero 1 [misalign]", donothing, explicit_bzero(doge + 1, 1));
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EZBENCH2("memset 1 [misalign]", donothing, explicit_memset(doge + 1, 0, 1));
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EZBENCH2("bzero 2 [misalign]", donothing, explicit_bzero(doge + 1, 2));
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EZBENCH2("memset 2 [misalign]", donothing, explicit_memset(doge + 1, 0, 2));
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EZBENCH2("bzero 4 [misalign]", donothing, explicit_bzero(doge + 1, 4));
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EZBENCH2("memset 4 [misalign]", donothing, explicit_memset(doge + 1, 0, 4));
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EZBENCH2("bzero 8 [misalign]", donothing, explicit_bzero(doge + 1, 8));
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EZBENCH2("memset 8 [misalign]", donothing, explicit_memset(doge + 1, 0, 8));
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EZBENCH2("bzero 16 [misalign]", donothing, explicit_bzero(doge + 1, 16));
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EZBENCH2("memset 16 [misalign]", donothing, explicit_memset(doge + 1, 0, 16));
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EZBENCH2("bzero 31 [misalign]", donothing, explicit_bzero(doge + 1, 31));
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EZBENCH2("memset 31 [misalign]", donothing, explicit_memset(doge + 1, 0, 31));
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EZBENCH2("bzero 32 [misalign]", donothing, explicit_bzero(doge + 1, 32));
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EZBENCH2("memset 32 [misalign]", donothing, explicit_memset(doge + 1, 0, 32));
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EZBENCH2("bzero 33 [misalign]", donothing, explicit_bzero(doge + 1, 33));
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EZBENCH2("memset 33 [misalign]", donothing, explicit_memset(doge + 1, 0, 33));
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EZBENCH2("bzero 64 [misalign]", donothing, explicit_bzero(doge + 1, 64));
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EZBENCH2("memset 64 [misalign]", donothing, explicit_memset(doge + 1, 0, 64));
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EZBENCH2("bzero 127 [misalign]", donothing, explicit_bzero(doge + 1, 127));
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EZBENCH2("memset 127 [misalign]", donothing,
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explicit_memset(doge + 1, 0, 127));
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EZBENCH2("bzero 128 [misalign]", donothing, explicit_bzero(doge + 1, 128));
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EZBENCH2("memset 128 [misalign]", donothing,
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explicit_memset(doge + 1, 0, 128));
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}
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