cosmopolitan/libc/intrin/flushviewoffile.c
2024-07-19 19:38:00 -07:00

44 lines
2.6 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 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.h"
#include "libc/nt/memory.h"
__msabi extern typeof(FlushViewOfFile) *const __imp_FlushViewOfFile;
/**
* Syncs memory created by MapViewOfFileEx().
*
* This doesn't wait until the pages are written out to the physical
* medium. This doesn't update timestamps or file/dir metadata.
*
* @note this wrapper takes care of ABI, STRACE(), and __winerr()
* @note consider buying a ups
* @see FlushFileBuffers()
*/
textwindows bool32 FlushViewOfFile(const void *lpBaseAddress,
size_t dwNumberOfBytesToFlush) {
bool32 ok;
ok = __imp_FlushViewOfFile(lpBaseAddress, dwNumberOfBytesToFlush);
if (!ok)
__winerr();
NTTRACE("FlushViewOfFile(%p, %'zu) → %hhhd% m", lpBaseAddress,
dwNumberOfBytesToFlush, ok);
return ok;
}