mirror of https://github.com/hslam/shm.git
32 lines
731 B
Go
32 lines
731 B
Go
// Copyright (c) 2020 Meng Huang (mhboy@outlook.com)
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// This package is licensed under a MIT license that can be found in the LICENSE file.
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// Package shm provides a way to use shared memory.
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package shm
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import (
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"os"
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"syscall"
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)
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const (
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// O_RDONLY opens the file read-only.
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O_RDONLY int = syscall.O_RDONLY
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// O_WRONLY opens the file write-only.
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O_WRONLY int = syscall.O_WRONLY
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// O_RDWR opens the file read-write.
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O_RDWR int = syscall.O_RDWR
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// O_CREATE creates a new file if none exists.
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O_CREATE int = syscall.O_CREAT
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)
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// validSize returns the valid size.
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func validSize(size int64) int64 {
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pageSize := int64(os.Getpagesize())
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if size%pageSize == 0 {
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return size
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}
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return (size/pageSize + 1) * pageSize
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}
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