32 lines
618 B
Go
32 lines
618 B
Go
// +build !windows,!plan9,!solaris
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package tsm1
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import (
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"os"
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"syscall"
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"unsafe"
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)
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func mmap(f *os.File, offset int64, length int) ([]byte, error) {
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mmap, err := syscall.Mmap(int(f.Fd()), 0, length, syscall.PROT_READ, syscall.MAP_SHARED)
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if err != nil {
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return nil, err
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}
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return mmap, nil
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}
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func munmap(b []byte) (err error) {
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return syscall.Munmap(b)
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}
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// From: github.com/boltdb/bolt/bolt_unix.go
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func madvise(b []byte, advice int) (err error) {
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_, _, e1 := syscall.Syscall(syscall.SYS_MADVISE, uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), uintptr(advice))
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if e1 != 0 {
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err = e1
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}
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return
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}
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