cosmopolitan/libc/stdio/stdout.c
2022-08-11 12:13:18 -07:00

51 lines
2.7 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=8 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 "libc/intrin/pushpop.h"
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/stdio/internal.h"
#include "libc/stdio/stdio.h"
STATIC_YOINK("_init_stdout");
/**
* Pointer to standard output stream.
*/
FILE *stdout;
hidden FILE __stdout;
hidden unsigned char __stdout_buf[BUFSIZ];
static textstartup void __stdout_init() {
struct FILE *sf;
sf = stdout;
asm("" : "+r"(sf));
/*
* Unlike other C libraries we don't bother calling fstat() to check
* if stdio is a character device and we instead choose to always line
* buffer it. We need it because there's no way to use the unbuffer
* command on a statically linked binary. This still goes fast. We
* value latency more than throughput, and stdio isn't the best api
* when the goal is throughput.
*/
sf->bufmode = _IOLBF;
__fflush_register(sf);
}
const void *const __stdout_ctor[] initarray = {__stdout_init};