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With truncate() the OS might not actually allocate the space leading to a SIGBUS if /dev/shm runs out of space when actually using the mmap. By using fallocate we ensure that once the SHM mmap is created it wont fail
21 lines
317 B
Go
21 lines
317 B
Go
// License: GPLv3 Copyright: 2023, Kovid Goyal, <kovid at kovidgoyal.net>
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package shm
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import (
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"errors"
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"fmt"
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"golang.org/x/sys/unix"
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)
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var _ = fmt.Print
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func Fallocate_simple(fd int, size int64) (err error) {
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for {
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if err = unix.Fallocate(fd, 0, 0, size); !errors.Is(err, unix.EINTR) {
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return
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}
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}
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}
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