43 lines · cpp
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-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/stdio/fgets.h"10 11#include "file.h"12#include "hdr/stdint_proxy.h"13#include "hdr/stdio_macros.h" // for EOF.14#include "hdr/types/FILE.h"15#include "src/__support/common.h"16 17namespace LIBC_NAMESPACE_DECL {18 19LLVM_LIBC_FUNCTION(char *, fgets,20 (char *__restrict str, int count,21 ::FILE *__restrict stream)) {22 if (count < 1)23 return nullptr;24 25 uint64_t recv_size;26 void *buf = nullptr;27 rpc::Client::Port port = rpc::client.open<LIBC_READ_FGETS>();28 port.send([=](rpc::Buffer *buffer, uint32_t) {29 buffer->data[0] = count;30 buffer->data[1] = file::from_stream(stream);31 });32 port.recv_n(&buf, &recv_size,33 [&](uint64_t) { return reinterpret_cast<void *>(str); });34 port.close();35 36 if (recv_size == 0)37 return nullptr;38 39 return str;40}41 42} // namespace LIBC_NAMESPACE_DECL43