| // |
| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| #include "shill/net/io_input_handler.h" |
| |
| #include <string> |
| #include <unistd.h> |
| |
| #include <base/logging.h> |
| #include <base/strings/stringprintf.h> |
| |
| namespace shill { |
| |
| IOInputHandler::IOInputHandler(int fd, |
| const InputCallback& input_callback, |
| const ErrorCallback& error_callback) |
| : fd_(fd), |
| fd_watcher_(FROM_HERE), |
| input_callback_(input_callback), |
| error_callback_(error_callback) {} |
| |
| IOInputHandler::~IOInputHandler() { |
| Stop(); |
| } |
| |
| void IOInputHandler::Start() { |
| if (!base::MessageLoopForIO::current()->WatchFileDescriptor( |
| fd_, true, base::MessageLoopForIO::WATCH_READ, |
| &fd_watcher_, this)) { |
| LOG(ERROR) << "WatchFileDescriptor failed on read"; |
| } |
| } |
| |
| void IOInputHandler::Stop() { |
| fd_watcher_.StopWatchingFileDescriptor(); |
| } |
| |
| void IOInputHandler::OnFileCanReadWithoutBlocking(int fd) { |
| CHECK_EQ(fd_, fd); |
| |
| unsigned char buf[IOHandler::kDataBufferSize]; |
| ssize_t len = read(fd, buf, sizeof(buf)); |
| if (len < 0) { |
| std::string condition = base::StringPrintf( |
| "File read error: %d", errno); |
| LOG(ERROR) << condition; |
| error_callback_.Run(condition); |
| } else { |
| InputData input_data(buf, len); |
| input_callback_.Run(&input_data); |
| } |
| } |
| |
| void IOInputHandler::OnFileCanWriteWithoutBlocking(int fd) { |
| NOTREACHED() << "Not watching file descriptor for write"; |
| } |
| |
| } // namespace shill |