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37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
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// Copyright 2016 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_MEMORY_SHARED_MEMORY_HELPER_H_
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#define BASE_MEMORY_SHARED_MEMORY_HELPER_H_
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#include "base/memory/shared_memory.h"
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#include "build/build_config.h"
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#include <fcntl.h>
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namespace base {
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#if !defined(OS_ANDROID)
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// Makes a temporary file, fdopens it, and then unlinks it. |fd| is populated
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// with the opened fd. |readonly_fd| is populated with the opened fd if
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// options.share_read_only is true. |path| is populated with the location of
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// the file before it was unlinked.
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// Returns false if there's an unhandled failure.
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bool CreateAnonymousSharedMemory(const SharedMemoryCreateOptions& options,
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ScopedFD* fd,
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ScopedFD* readonly_fd,
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FilePath* path);
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// Takes the outputs of CreateAnonymousSharedMemory and maps them properly to
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// |mapped_file| or |readonly_mapped_file|, depending on which one is populated.
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bool PrepareMapFile(ScopedFD fd,
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ScopedFD readonly_fd,
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int* mapped_file,
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int* readonly_mapped_file);
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#endif // !defined(OS_ANDROID)
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} // namespace base
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#endif // BASE_MEMORY_SHARED_MEMORY_HELPER_H_
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