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Auto merge of #107586 - SparrowLii:parallel-query, r=cjgillot

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Introduce `DynSend` and `DynSync` auto trait for parallel compiler

part of parallel-rustc #101566

This PR introduces `DynSend / DynSync` trait and `FromDyn / IntoDyn` structure in rustc_data_structure::marker. `FromDyn` can dynamically check data structures for thread safety when switching to parallel environments (such as calling `par_for_each_in`). This happens only when `-Z threads > 1` so it doesn't affect single-threaded mode's compile efficiency.

r? `@cjgillot`
This commit is contained in:
bors 2023-05-13 13:47:53 +00:00
commit dd8ec9c88d
26 changed files with 557 additions and 110 deletions
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3
compiler/rustc_driver_impl/src/lib.rs
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@ -256,6 +256,9 @@ fn run_compiler(
let sopts = config::build_session_options(&matches);
// Set parallel mode before thread pool creation, which will create `Lock`s.
interface::set_thread_safe_mode(&sopts.unstable_opts);
if let Some(ref code) = matches.opt_str("explain") {
handle_explain(diagnostics_registry(), code, sopts.error_format);
return Ok(());