time: advance frozen time in park_timeout
#2059
Merged
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
This patch improves the behavior of frozen time (a testing utility made available with the `test-util` feature flag). Instead of of requiring `time::advance` to be called in order to advance the value returned by `Instant::now`, calls to `time::Driver::park_timeout` will use the provided duration to advance the time. This is the desired behavior as the timeout is used to indicate when the next scheduled delay needs to be fired.
LucioFranco
approved these changes
Jan 6, 2020
Marwes
pushed a commit
to Marwes/tokio
that referenced
this pull request
Jul 7, 2020
This was changed in tokio-rs#2059. This had me extremely confused for some time as my timeouts fired immediately, without the wrapped future that were waiting on IO to actually run long enough. I am not sure about the exact wording here but this had me very confused for some time. Deprecating "pause" and giving it a more accurate name may be a good idea as well. ```rust async fn timeout_advances() { time::pause(); timeout(ms(1), async { // Change to 1 and the this future resolve, 2 or // more and the timeout resolves for _ in 0..2 { tokio::task::yield_now().await } }) .await .unwrap(); } ```
Marwes
pushed a commit
to Marwes/tokio
that referenced
this pull request
Jul 7, 2020
This was changed in tokio-rs#2059. This had me extremely confused for some time as my timeouts fired immediately, without the wrapped future that were waiting on IO to actually run long enough. I am not sure about the exact wording here but this had me very confused for some time. Deprecating "pause" and giving it a more accurate name may be a good idea as well. ```rust async fn timeout_advances() { time::pause(); timeout(ms(1), async { // Change to 1 and the this future resolve, 2 or // more and the timeout resolves for _ in 0..2 { tokio::task::yield_now().await } }) .await .unwrap(); } ```
hawkw
pushed a commit
that referenced
this pull request
Jul 10, 2020
…#2647) * doc: Update the docs of "pause" to state that time will still advance This was changed in #2059. This had me extremely confused for some time as my timeouts fired immediately, without the wrapped future that were waiting on IO to actually run long enough. I am not sure about the exact wording here but this had me very confused for some time. Deprecating "pause" and giving it a more accurate name may be a good idea as well. ```rust async fn timeout_advances() { time::pause(); timeout(ms(1), async { // Change to 1 and the this future resolve, 2 or // more and the timeout resolves for _ in 0..2 { tokio::task::yield_now().await } }) .await .unwrap(); } ``` * Update tokio/src/time/clock.rs Co-authored-by: Alice Ryhl <[email protected]> Co-authored-by: Alice Ryhl <[email protected]>
This was referenced Nov 7, 2020
Closed
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This patch improves the behavior of frozen time (a testing utility made
available with the
test-utilfeature flag). Instead of of requiringtime::advanceto be called in order to advance the value returned byInstant::now, calls totime::Driver::park_timeoutwill use theprovided duration to advance the time.
This is the desired behavior as the timeout is used to indicate when the
next scheduled delay needs to be fired.