cosmopolitan/libc/testlib/benchrunner.c
Jōshin e16a7d8f3b
flip et / noet in modelines
`et` means `expandtab`.

```sh
rg 'vi: .* :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\)  :vi/vi: \1 xoet\2:vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2  :vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/'
```
2023-12-07 22:17:11 -05:00

77 lines
3.5 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/sections.internal.h"
#include "libc/calls/blockcancel.internal.h"
#include "libc/calls/calls.h"
#include "libc/calls/syscall-sysv.internal.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/log/log.h"
#include "libc/nexgen32e/x86feature.h"
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/at.h"
#include "libc/sysv/consts/f.h"
#include "libc/sysv/consts/mlock.h"
#include "libc/sysv/consts/o.h"
#include "libc/testlib/testlib.h"
double g_avx2_juiceup_doubles_[4] forcealign(32);
unsigned long long g_avx2_juiceup_quadwords_[4] forcealign(32);
void testlib_benchwarmup(void) {
/* get mathematical parts of cpu juiced up */
if (X86_HAVE(AVX2) && X86_HAVE(FMA)) {
asm("vmovdqa\t%1,%%ymm0\n\t"
"vpmaddwd\t(%2),%%ymm0,%%ymm0\n\t"
"vmovdqa\t%%ymm0,%0\n\t"
"vzeroall"
: "=m"(g_avx2_juiceup_quadwords_)
: "m"(g_avx2_juiceup_quadwords_), "r"(&__executable_start[0]));
asm("vmovapd\t%1,%%ymm1\n\t"
"vfmadd132pd\t(%2),%%ymm1,%%ymm1\n\t"
"vmovapd\t%%ymm1,%0\n\t"
"vzeroall"
: "=m"(g_avx2_juiceup_doubles_)
: "m"(g_avx2_juiceup_doubles_), "r"(&__executable_start[32]));
}
}
void EnableCruiseControlForCool(void) {
int fd, micros = 10;
if (!IsLinux()) return;
BLOCK_CANCELATION;
if ((fd = __sys_openat(AT_FDCWD, "/dev/cpu_dma_latency", O_WRONLY, 0)) !=
-1) {
sys_write(fd, &micros, sizeof(micros));
sys_fcntl(fd, F_DUPFD_CLOEXEC, 123, __sys_fcntl);
sys_close(fd);
}
ALLOW_CANCELATION;
}
/**
* Runs all benchmark functions in sorted order.
*
* @see BENCH()
*/
void testlib_runallbenchmarks(void) {
__log_level = kLogWarn;
EnableCruiseControlForCool();
testlib_runtestcases(__bench_start, __bench_end, testlib_benchwarmup);
}