46 lines
1.5 KiB
C++
46 lines
1.5 KiB
C++
// Copyright (c) 2006-2009 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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#ifndef BASE_FILE_DESCRIPTOR_POSIX_H_
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#define BASE_FILE_DESCRIPTOR_POSIX_H_
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namespace base {
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// -----------------------------------------------------------------------------
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// We introduct a special structure for file descriptors in order that we are
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// able to use template specialisation to special-case their handling.
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//
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// WARNING: (Chromium only) There are subtleties to consider if serialising
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// these objects over IPC. See comments in ipc/ipc_message_utils.h
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// above the template specialisation for this structure.
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// -----------------------------------------------------------------------------
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struct FileDescriptor {
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FileDescriptor()
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: fd(-1),
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auto_close(false) { }
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FileDescriptor(int ifd, bool iauto_close)
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: fd(ifd),
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auto_close(iauto_close) { }
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bool operator==(const FileDescriptor& other) const {
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return (fd == other.fd && auto_close == other.auto_close);
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}
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// A comparison operator so that we can use these as keys in a std::map.
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bool operator<(const FileDescriptor& other) const {
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return other.fd < fd;
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}
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int fd;
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// If true, this file descriptor should be closed after it has been used. For
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// example an IPC system might interpret this flag as indicating that the
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// file descriptor it has been given should be closed after use.
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bool auto_close;
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};
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} // namespace base
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#endif // BASE_FILE_DESCRIPTOR_POSIX_H_
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