lock with timeout
clumsy, but I have node idea how to make it better
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@ -98,7 +98,7 @@ impl ChunkStore {
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let mut lockfile_path = base.clone();
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lockfile_path.push(".lock");
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let lockfile = match OpenOptions::new()
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let lockfile = match OpenOptions::new()
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.create(true)
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.append(true)
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.open(&lockfile_path) {
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@ -109,12 +109,34 @@ impl ChunkStore {
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let fd = lockfile.as_raw_fd();
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// fixme: lock with timeout
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flock(fd, FlockArg::LockExclusive)?;
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let now = std::time::SystemTime::now();
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let timeout = 10;
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let mut print_msg = true;
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loop {
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match flock(fd, FlockArg::LockExclusiveNonblock) {
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Ok(_) => break,
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Err(_) => {
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if print_msg {
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print_msg = false;
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eprintln!("trying to aquire lock...");
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}
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}
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}
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println!("Got LOCK {:?}", fd);
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//std::thread::sleep_ms(30000);
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match now.elapsed() {
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Ok(elapsed) => {
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if elapsed.as_secs() >= timeout {
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bail!("unable to aquire chunk store lock {:?} - got timeout",
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lockfile_path);
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}
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}
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Err(err) => {
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bail!("unable to aquire chunk store lock {:?} - clock problems - {}",
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lockfile_path, err);
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}
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}
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std::thread::sleep_ms(100);
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}
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Ok(ChunkStore {
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base,
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