44 lines
1.0 KiB
C++
44 lines
1.0 KiB
C++
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "tools/android/forwarder2/pipe_notifier.h"
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sys/types.h>
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#include "base/logging.h"
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#include "base/posix/eintr_wrapper.h"
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#include "base/safe_strerror_posix.h"
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namespace forwarder2 {
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PipeNotifier::PipeNotifier() {
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int pipe_fd[2];
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int ret = pipe(pipe_fd);
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CHECK_EQ(0, ret);
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receiver_fd_ = pipe_fd[0];
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sender_fd_ = pipe_fd[1];
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fcntl(sender_fd_, F_SETFL, O_NONBLOCK);
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}
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PipeNotifier::~PipeNotifier() {
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(void) HANDLE_EINTR(close(receiver_fd_));
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(void) HANDLE_EINTR(close(sender_fd_));
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}
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bool PipeNotifier::Notify() {
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CHECK_NE(-1, sender_fd_);
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errno = 0;
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int ret = HANDLE_EINTR(write(sender_fd_, "1", 1));
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if (ret < 0) {
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LOG(WARNING) << "Error while notifying pipe. " << safe_strerror(errno);
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return false;
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}
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return true;
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}
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} // namespace forwarder
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