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48 lines
2.9 KiB
C
48 lines
2.9 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/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/struct/iovec.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/sock/internal.h"
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#include "libc/sysv/consts/nr.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/testlib/ezbench.h"
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#include "libc/testlib/testlib.h"
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static long Write(long fd, const void *data, unsigned long size) {
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long ax, di, si, dx;
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asm volatile("syscall"
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: "=a"(ax), "=D"(di), "=S"(si), "=d"(dx)
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: "0"(__NR_write), "1"(fd), "2"(data), "3"(size)
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: "rcx", "r8", "r9", "r10", "r11", "memory", "cc");
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return ax;
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}
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BENCH(write, bench) {
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ASSERT_SYS(0, 3, open("/dev/null", O_WRONLY));
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EZBENCH2("write", donothing, write(3, "hello", 5));
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EZBENCH2("writev", donothing, writev(3, &(struct iovec){"hello", 5}, 1));
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EZBENCH2("sys_write", donothing, sys_write(3, "hello", 5));
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EZBENCH2("sys_writev", donothing,
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sys_writev(3, &(struct iovec){"hello", 5}, 1));
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EZBENCH2("Write", donothing, Write(3, "hello", 5));
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EZBENCH2("Write", donothing, Write(3, "hello", 5));
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ASSERT_SYS(0, 0, close(3));
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}
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