54 lines
1.2 KiB
C++
54 lines
1.2 KiB
C++
//===-- FDReader.cpp ------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "FDReader.h"
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#include <cassert>
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#include <cstring>
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#include <iostream>
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#include <unistd.h>
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namespace __llvm_libc {
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namespace testutils {
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FDReader::FDReader() {
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if (::pipe(pipefd)) {
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std::cerr << "pipe(2) failed";
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abort();
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}
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}
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FDReader::~FDReader() {
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::close(pipefd[0]);
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::close(pipefd[1]);
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}
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bool FDReader::match_written(const char *str) {
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::close(pipefd[1]);
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constexpr ssize_t ChunkSize = 4096 * 4;
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char Buffer[ChunkSize];
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std::string PipeStr;
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std::string InputStr(str);
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for (int BytesRead; (BytesRead = ::read(pipefd[0], Buffer, ChunkSize));) {
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if (BytesRead > 0) {
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PipeStr.insert(PipeStr.size(), Buffer, BytesRead);
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} else {
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assert(0 && "Error reading from pipe");
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return false;
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}
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}
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return PipeStr == InputStr;
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}
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} // namespace testutils
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} // namespace __llvm_libc
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