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performance-metrics: Add sync drain completions helper

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Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>
This commit is contained in:
Anatol Belski
2026-03-27 22:32:07 +01:00
committed by Rob Bradford
parent ab1dddb62a
commit 97b109bc89
1 changed files with 8 additions and 0 deletions
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8
performance-metrics/src/util.rs
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@@ -8,6 +8,7 @@ use std::io::{ErrorKind, Seek, SeekFrom, Write};
use std::thread; use std::thread;
use std::time::Duration; use std::time::Duration;
use block::async_io::AsyncIo;
use block::qcow::{QcowFile, RawFile}; use block::qcow::{QcowFile, RawFile};
use block::qcow_async::QcowDiskAsync; use block::qcow_async::QcowDiskAsync;
use block::qcow_sync::QcowDiskSync; use block::qcow_sync::QcowDiskSync;
@@ -65,6 +66,13 @@ pub fn qcow_async_tempfile(num_clusters: usize) -> (TempFile, QcowDiskAsync) {
(tmp, disk) (tmp, disk)
} }
/// Drain `count` completions from a synchronous async_io backend.
pub fn drain_completions(async_io: &mut dyn AsyncIo, count: usize) {
for _ in 0..count {
async_io.next_completed_request();
}
}
/// Spin and wait until the given eventfd becomes readable. /// Spin and wait until the given eventfd becomes readable.
pub fn wait_for_eventfd(notifier: &EventFd) { pub fn wait_for_eventfd(notifier: &EventFd) {
loop { loop {