1a1be5d69SJoseph Huber //===-- GPU implementation of fgets ---------------------------------------===// 2a1be5d69SJoseph Huber // 3a1be5d69SJoseph Huber // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4a1be5d69SJoseph Huber // See https://llvm.org/LICENSE.txt for license information. 5a1be5d69SJoseph Huber // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6a1be5d69SJoseph Huber // 7a1be5d69SJoseph Huber //===----------------------------------------------------------------------===// 8a1be5d69SJoseph Huber 9a1be5d69SJoseph Huber #include "src/stdio/fgets.h" 10a1be5d69SJoseph Huber #include "file.h" 115ff3ff33SPetr Hosek #include "src/__support/macros/config.h" 12a1be5d69SJoseph Huber #include "src/stdio/feof.h" 13a1be5d69SJoseph Huber #include "src/stdio/ferror.h" 14a1be5d69SJoseph Huber 155aed6d67SMichael Jones #include "hdr/stdio_macros.h" // for EOF. 165aed6d67SMichael Jones #include "hdr/types/FILE.h" 17a1be5d69SJoseph Huber #include <stddef.h> 18a1be5d69SJoseph Huber 195ff3ff33SPetr Hosek namespace LIBC_NAMESPACE_DECL { 20a1be5d69SJoseph Huber 21a1be5d69SJoseph Huber LLVM_LIBC_FUNCTION(char *, fgets, 22a1be5d69SJoseph Huber (char *__restrict str, int count, 23a1be5d69SJoseph Huber ::FILE *__restrict stream)) { 24a1be5d69SJoseph Huber if (count < 1) 25a1be5d69SJoseph Huber return nullptr; 26a1be5d69SJoseph Huber 27a3921576SJoseph Huber uint64_t recv_size; 28a3921576SJoseph Huber void *buf = nullptr; 29*a6ef0debSJoseph Huber rpc::Client::Port port = rpc::client.open<LIBC_READ_FGETS>(); 30be0c67c9SJoseph Huber port.send([=](rpc::Buffer *buffer, uint32_t) { 31a3921576SJoseph Huber buffer->data[0] = count; 32a3921576SJoseph Huber buffer->data[1] = file::from_stream(stream); 33a3921576SJoseph Huber }); 34a3921576SJoseph Huber port.recv_n(&buf, &recv_size, 35a3921576SJoseph Huber [&](uint64_t) { return reinterpret_cast<void *>(str); }); 36a3921576SJoseph Huber port.close(); 37a1be5d69SJoseph Huber 38a3921576SJoseph Huber if (recv_size == 0) 39a1be5d69SJoseph Huber return nullptr; 40a1be5d69SJoseph Huber 41a1be5d69SJoseph Huber return str; 42a1be5d69SJoseph Huber } 43a1be5d69SJoseph Huber 445ff3ff33SPetr Hosek } // namespace LIBC_NAMESPACE_DECL 45