mirror of
https://github.com/tokio-rs/tracing.git
synced 2025-10-02 15:24:47 +00:00
df9666bdeb
## Motivation Currently, compiling `tracing-core` with `default-features = false` (i.e. for `no_std` targets) emits a few warnings. This is due to the spinlock implementation's use of the deprecated `atomic::spin_loop_hint` function (renamed to `hint::spin_loop`), and the use of deprecated `compare_and_swap` instead of `compare_exchange` methods. Now that our MSRV is 1.49 (the version in which `hint::spin_loop` was stabilized), we can fix these warnings. ## Solution This branch replaces the deprecated APIs. Also, I noticed that one of the tests emits unused-imports warnings with `--no-default-features`. This is because the actual tests are feature flagged to require `std`, but the module itself doesn't, so the imports are just hanging out and not getting used for anything. I went ahead and fixed that as well. Signed-off-by: Eliza Weisman <eliza@buoyant.io>
57 lines
1.4 KiB
Rust
57 lines
1.4 KiB
Rust
#![cfg(feature = "std")]
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mod common;
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use common::*;
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use tracing_core::dispatcher::*;
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#[test]
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fn set_default_dispatch() {
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set_global_default(Dispatch::new(TestSubscriberA)).expect("global dispatch set failed");
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get_default(|current| {
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assert!(
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current.is::<TestSubscriberA>(),
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"global dispatch get failed"
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)
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});
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let guard = set_default(&Dispatch::new(TestSubscriberB));
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get_default(|current| assert!(current.is::<TestSubscriberB>(), "set_default get failed"));
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// Drop the guard, setting the dispatch back to the global dispatch
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drop(guard);
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get_default(|current| {
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assert!(
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current.is::<TestSubscriberA>(),
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"global dispatch get failed"
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)
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});
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}
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#[test]
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fn nested_set_default() {
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let _guard = set_default(&Dispatch::new(TestSubscriberA));
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get_default(|current| {
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assert!(
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current.is::<TestSubscriberA>(),
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"set_default for outer subscriber failed"
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)
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});
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let inner_guard = set_default(&Dispatch::new(TestSubscriberB));
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get_default(|current| {
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assert!(
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current.is::<TestSubscriberB>(),
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"set_default inner subscriber failed"
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)
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});
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drop(inner_guard);
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get_default(|current| {
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assert!(
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current.is::<TestSubscriberA>(),
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"set_default outer subscriber failed"
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)
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});
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}
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