1 //===-- Implementation of fwrite and fwrite_unlocked ------------*- C++ -*-===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 #include "src/stdio/fwrite.h"
10 #include "src/stdio/FILE.h"
11 #include "src/threads/mtx_lock.h"
12 #include "src/threads/mtx_unlock.h"
13 
14 namespace __llvm_libc {
15 
16 size_t fwrite_unlocked(const void *__restrict ptr, size_t size, size_t nmeb,
17                        __llvm_libc::FILE *__restrict stream) {
18   return stream->write(stream, reinterpret_cast<const char *>(ptr),
19                        size * nmeb);
20 }
21 
22 size_t fwrite(const void *__restrict ptr, size_t size, size_t nmeb,
23               __llvm_libc::FILE *__restrict stream) {
24   __llvm_libc::mtx_lock(&stream->lock);
25   size_t written = fwrite_unlocked(ptr, size, nmeb, stream);
26   __llvm_libc::mtx_unlock(&stream->lock);
27   return written;
28 }
29 
30 } // namespace __llvm_libc
31