15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "tools/android/forwarder2/pipe_notifier.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <fcntl.h> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <unistd.h> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <sys/socket.h> 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <sys/types.h> 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 132a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/posix/eintr_wrapper.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/safe_strerror_posix.h" 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace forwarder2 { 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PipeNotifier::PipeNotifier() { 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int pipe_fd[2]; 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ret = pipe(pipe_fd); 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK_EQ(0, ret); 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) receiver_fd_ = pipe_fd[0]; 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) sender_fd_ = pipe_fd[1]; 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fcntl(sender_fd_, F_SETFL, O_NONBLOCK); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)PipeNotifier::~PipeNotifier() { 28a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) close(receiver_fd_); 29a3f6a49ab37290eeeb8db0f41ec0f1cb74a68be7Torne (Richard Coles) close(sender_fd_); 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool PipeNotifier::Notify() { 335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK_NE(-1, sender_fd_); 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) errno = 0; 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) int ret = HANDLE_EINTR(write(sender_fd_, "1", 1)); 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (ret < 0) { 375d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) PLOG(ERROR) << "write"; 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return true; 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)void PipeNotifier::Reset() { 445d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) char c; 455d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) int ret = HANDLE_EINTR(read(receiver_fd_, &c, 1)); 465d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) if (ret < 0) { 475d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) PLOG(ERROR) << "read"; 485d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) return; 495d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) } 505d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DCHECK_EQ(1, ret); 515d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) DCHECK_EQ('1', c); 525d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles)} 535d1f7b1de12d16ceb2c938c56701a3e8bfa558f7Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace forwarder 55