37 lines
937 B
Go
37 lines
937 B
Go
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// This package is a lightly modified version of the mmap code
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// in github.com/google/codesearch/index.
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// The mmap package provides an abstraction for memory mapping files
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// on different platforms.
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package mmap
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import (
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"os"
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)
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// The backing file is never closed, so Data
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// remains valid for the lifetime of the process.
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type Data struct {
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// TODO(pjw): might be better to define versions of Data
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// for the 3 specializations
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f *os.File
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Data []byte
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// Some windows magic
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Windows interface{}
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}
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// Mmap maps the given file into memory.
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// When remapping a file, pass the most recently returned Data.
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func Mmap(f *os.File) (*Data, error) {
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return mmapFile(f)
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}
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// Munmap unmaps the given file from memory.
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func Munmap(d *Data) error {
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return munmapFile(d)
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}
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