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extend EventArgRecorder into span-aware SpannedEventArgRecorder

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The self-profiler's `EventArgRecorder` is general-purpose in its ability to record Strings (and `rustc_span` depends on the crate its defined in, `rustc_data_structure`).

Some generic activities could use recording locations where they happen in the user's code: to allow e.g. to track macro expansions and diagnose performance issues there.

This adds a `SpannedEventArgRecorder` that can record an argument given as a span, rather than a String, since turning spans into Strings can be tricky if you're not happy with its default Debug output. This way the recorder can have a `record_arg_spanned` method which will do that.
This commit is contained in:
Rémy Rakic 2022-04-01 20:59:23 +02:00
parent a8272f23cc
commit 215b377cc3
2 changed files with 37 additions and 0 deletions
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compiler/rustc_span/src/lib.rs
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@ -59,6 +59,8 @@ pub use symbol::{sym, Symbol};
mod analyze_source_file;
pub mod fatal_error;
pub mod profiling;
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
use rustc_data_structures::sync::{Lock, Lrc};