1//===-- GPU implementation of fgets ---------------------------------------===//
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/fgets.h"
10
11#include "file.h"
12#include "hdr/stdio_macros.h" // for EOF.
13#include "hdr/types/FILE.h"
14#include "src/__support/common.h"
15
16#include <stdint.h>
17
18namespace LIBC_NAMESPACE_DECL {
19
20LLVM_LIBC_FUNCTION(char *, fgets,
21 (char *__restrict str, int count,
22 ::FILE *__restrict stream)) {
23 if (count < 1)
24 return nullptr;
25
26 uint64_t recv_size;
27 void *buf = nullptr;
28 rpc::Client::Port port = rpc::client.open<LIBC_READ_FGETS>();
29 port.send([=](rpc::Buffer *buffer, uint32_t) {
30 buffer->data[0] = count;
31 buffer->data[1] = file::from_stream(stream);
32 });
33 port.recv_n(&buf, &recv_size,
34 [&](uint64_t) { return reinterpret_cast<void *>(str); });
35 port.close();
36
37 if (recv_size == 0)
38 return nullptr;
39
40 return str;
41}
42
43} // namespace LIBC_NAMESPACE_DECL
44

source code of libc/src/stdio/gpu/fgets.cpp