cosmopolitan/libc/stdio/stdout.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/bits/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));
  if (IsWindows() || ischardev(pushpop(sf->fd))) {
    sf->bufmode = _IOLBF;
  }
  __fflush_register(sf);
}

const void *const __stdout_ctor[] initarray = {__stdout_init};