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//
// 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),
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);
}
InputData input_data(buf, len);
input_callback_.Run(&input_data);
}
void IOInputHandler::OnFileCanWriteWithoutBlocking(int fd) {
NOTREACHED() << "Not watching file descriptor for write";
}
} // namespace shill
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