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mmap: handle ENOMEM error

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This commit causes a memory map strategy to fall back to a file backed
strategy if the mmap call fails with an `ENOMEM` error.

Fixes #852
This commit is contained in:
Andrew Gallant 2018-03-10 08:12:24 -05:00
parent 9163aaac27
commit dbf6f15625
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1 changed files with 5 additions and 2 deletions
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7
src/worker.rs
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@ -341,14 +341,17 @@ impl Worker {
#[cfg(unix)]
fn mmap(&self, file: &File) -> Result<Option<Mmap>> {
use libc::{ENODEV, EOVERFLOW};
use libc::{EOVERFLOW, ENODEV, ENOMEM};
let err = match mmap_readonly(file) {
Ok(mmap) => return Ok(Some(mmap)),
Err(err) => err,
};
let code = err.raw_os_error();
if code == Some(ENODEV) || code == Some(EOVERFLOW) {
if code == Some(EOVERFLOW)
|| code == Some(ENODEV)
|| code == Some(ENOMEM)
{
return Ok(None);
}
Err(From::from(err))