rust/compiler/rustc_query_system/src/query/mod.rs

66 lines
2.3 KiB
Rust

mod plumbing;
pub use self::plumbing::*;
mod job;
#[cfg(parallel_compiler)]
pub use self::job::deadlock;
pub use self::job::{QueryInfo, QueryJob, QueryJobId, QueryJobInfo};
mod caches;
pub use self::caches::{
ArenaCacheSelector, CacheSelector, DefaultCacheSelector, QueryCache, QueryStorage,
};
mod config;
pub use self::config::{QueryAccessors, QueryConfig, QueryDescription};
use crate::dep_graph::{DepNode, DepNodeIndex, HasDepContext, SerializedDepNodeIndex};
use crate::query::job::QueryMap;
use rustc_data_structures::stable_hasher::HashStable;
use rustc_data_structures::sync::Lock;
use rustc_data_structures::thin_vec::ThinVec;
use rustc_errors::Diagnostic;
use rustc_span::def_id::DefId;
pub trait QueryContext: HasDepContext {
type Query: Clone + HashStable<Self::StableHashingContext>;
/// Get string representation from DefPath.
fn def_path_str(&self, def_id: DefId) -> String;
/// Get the query information from the TLS context.
fn current_query_job(&self) -> Option<QueryJobId<Self::DepKind>>;
fn try_collect_active_jobs(&self) -> Option<QueryMap<Self::DepKind, Self::Query>>;
/// Load data from the on-disk cache.
fn try_load_from_on_disk_cache(&self, dep_node: &DepNode<Self::DepKind>);
/// Try to force a dep node to execute and see if it's green.
fn try_force_from_dep_node(&self, dep_node: &DepNode<Self::DepKind>) -> bool;
/// Load diagnostics associated to the node in the previous session.
fn load_diagnostics(&self, prev_dep_node_index: SerializedDepNodeIndex) -> Vec<Diagnostic>;
/// Register diagnostics for the given node, for use in next session.
fn store_diagnostics(&self, dep_node_index: DepNodeIndex, diagnostics: ThinVec<Diagnostic>);
/// Register diagnostics for the given node, for use in next session.
fn store_diagnostics_for_anon_node(
&self,
dep_node_index: DepNodeIndex,
diagnostics: ThinVec<Diagnostic>,
);
/// Executes a job by changing the `ImplicitCtxt` to point to the
/// new query job while it executes. It returns the diagnostics
/// captured during execution and the actual result.
fn start_query<R>(
&self,
token: QueryJobId<Self::DepKind>,
diagnostics: Option<&Lock<ThinVec<Diagnostic>>>,
compute: impl FnOnce() -> R,
) -> R;
}