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31 lines
523 B
31 lines
523 B
4 years ago
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use super::*;
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/// Represents an open and memory mapped file
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#[derive(Debug)]
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pub struct MemMap
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{
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map: memmap::Mmap,
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file: fs::File,
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}
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impl MemMap
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{
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/// Get the memory mapped portion as a slice
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#[inline] pub fn as_slice(&self) -> &[u8]
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{
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&self.map[..]
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}
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}
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/// Attempt to map this file
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pub fn map(file: impl AsRef<Path>) -> io::Result<MemMap>
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{
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let file = OpenOptions::new()
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.read(true)
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.open(file)?;
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Ok(MemMap {
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map: unsafe { memmap::Mmap::map(&file)? },
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file,
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})
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}
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