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63 lines
1.7 KiB
C++
63 lines
1.7 KiB
C++
// Copyright 2014 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_FILES_SCOPED_FILE_H_
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#define BASE_FILES_SCOPED_FILE_H_
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#include <stdio.h>
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#include <memory>
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#include "base/base_export.h"
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#include "base/logging.h"
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#include "base/scoped_generic.h"
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#include "build/build_config.h"
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namespace base {
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namespace internal {
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#if defined(OS_POSIX) || defined(OS_FUCHSIA)
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struct BASE_EXPORT ScopedFDCloseTraits {
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static int InvalidValue() {
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return -1;
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}
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static void Free(int fd);
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};
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#endif
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// Functor for |ScopedFILE| (below).
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struct ScopedFILECloser {
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inline void operator()(FILE* x) const {
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if (x)
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fclose(x);
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}
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};
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} // namespace internal
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// -----------------------------------------------------------------------------
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#if defined(OS_POSIX) || defined(OS_FUCHSIA)
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// A low-level Posix file descriptor closer class. Use this when writing
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// platform-specific code, especially that does non-file-like things with the
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// FD (like sockets).
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//
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// If you're writing low-level Windows code, see base/win/scoped_handle.h
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// which provides some additional functionality.
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//
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// If you're writing cross-platform code that deals with actual files, you
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// should generally use base::File instead which can be constructed with a
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// handle, and in addition to handling ownership, has convenient cross-platform
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// file manipulation functions on it.
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typedef ScopedGeneric<int, internal::ScopedFDCloseTraits> ScopedFD;
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#endif
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// Automatically closes |FILE*|s.
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typedef std::unique_ptr<FILE, internal::ScopedFILECloser> ScopedFILE;
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} // namespace base
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#endif // BASE_FILES_SCOPED_FILE_H_
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