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| author | Nicholas Nethercote <n.nethercote@gmail.com> | 2023-11-20 13:12:07 +1100 |
|---|---|---|
| committer | Nicholas Nethercote <n.nethercote@gmail.com> | 2023-11-22 13:20:56 +1100 |
| commit | cf561904dbf4c2d8be6547b827af3a7387212580 (patch) | |
| tree | 08936ef33d2e29d229d777b4cabd04132f57a4f6 /compiler/rustc_interface/src | |
| parent | fec80b4475c871ad3e4d70d29d1781ee771fe631 (diff) | |
| download | rust-cf561904dbf4c2d8be6547b827af3a7387212580.tar.gz rust-cf561904dbf4c2d8be6547b827af3a7387212580.zip | |
Add comments about a timer.
Diffstat (limited to 'compiler/rustc_interface/src')
| -rw-r--r-- | compiler/rustc_interface/src/queries.rs | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/compiler/rustc_interface/src/queries.rs b/compiler/rustc_interface/src/queries.rs index 3fee2d28981..416ffeba4c7 100644 --- a/compiler/rustc_interface/src/queries.rs +++ b/compiler/rustc_interface/src/queries.rs @@ -304,6 +304,7 @@ impl Compiler { where F: for<'tcx> FnOnce(&'tcx Queries<'tcx>) -> T, { + // Must declare `_timer` first so that it is dropped after `queries`. let mut _timer = None; let queries = Queries::new(self); let ret = f(&queries); @@ -324,6 +325,8 @@ impl Compiler { .time("serialize_dep_graph", || gcx.enter(rustc_incremental::save_dep_graph)); } + // The timer's lifetime spans the dropping of `queries`, which contains + // the global context. _timer = Some(self.session().timer("free_global_ctxt")); ret |