/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2022 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/calls/syscall_support-nt.internal.h"
#include "libc/intrin/strace.internal.h"
#include "libc/nt/files.h"
#include "libc/nt/runtime.h"

__msabi extern typeof(FlushFileBuffers) *const __imp_FlushFileBuffers;
__msabi extern typeof(GetLastError) *const __imp_GetLastError;

/**
 * Flushes buffers of specified file to disk.
 *
 * This provides a stronger degree of assurance and blocking for things
 * to be sent to a physical medium, but it's not guaranteed unless your
 * file is opened in a direct non-caching mode. One main advantage here
 * seems to be coherency.
 *
 * @note consider buying a ups
 * @see FlushViewOfFile()
 */
textwindows bool32 FlushFileBuffers(int64_t hFile) {
  bool32 ok;
  ok = __imp_FlushFileBuffers(hFile);
  NTTRACE("FlushFileBuffers(%ld) → {%hhhd, %d}", hFile, ok,
          __imp_GetLastError());
  return ok;
}