Move Query to rustc_query_system.
Rename it to QueryStackFrame and document a bit.
This commit is contained in:
parent
0144d6a3b7
commit
3897395787
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@ -17,7 +17,6 @@ extern crate rustc_middle;
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extern crate tracing;
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use rustc_data_structures::fingerprint::Fingerprint;
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use rustc_data_structures::fx::FxHashMap;
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use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
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use rustc_errors::{Diagnostic, Handler, Level};
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use rustc_hir::def_id::CrateNum;
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@ -2,16 +2,15 @@
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//! generate the actual methods on tcx which find and execute the provider,
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//! manage the caches, and so forth.
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use super::{queries, Query};
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use super::queries;
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use rustc_middle::dep_graph::{DepKind, DepNode, DepNodeExt, DepNodeIndex, SerializedDepNodeIndex};
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use rustc_middle::ty::query::on_disk_cache;
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use rustc_middle::ty::tls::{self, ImplicitCtxt};
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use rustc_middle::ty::{self, TyCtxt};
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use rustc_query_system::dep_graph::HasDepContext;
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use rustc_query_system::query::{CycleError, QueryJobId, QueryJobInfo};
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use rustc_query_system::query::{QueryContext, QueryDescription};
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use rustc_query_system::query::{CycleError, QueryJobId};
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use rustc_query_system::query::{QueryContext, QueryDescription, QueryMap, QueryStackFrame};
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use rustc_data_structures::fx::FxHashMap;
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use rustc_data_structures::sync::Lock;
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use rustc_data_structures::thin_vec::ThinVec;
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use rustc_errors::{struct_span_err, Diagnostic, DiagnosticBuilder};
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@ -45,8 +44,6 @@ impl HasDepContext for QueryCtxt<'tcx> {
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}
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impl QueryContext for QueryCtxt<'tcx> {
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type Query = Query;
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fn def_path_str(&self, def_id: DefId) -> String {
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self.tcx.def_path_str(def_id)
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}
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@ -55,10 +52,7 @@ impl QueryContext for QueryCtxt<'tcx> {
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tls::with_related_context(**self, |icx| icx.query)
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}
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fn try_collect_active_jobs(
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&self,
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) -> Option<FxHashMap<QueryJobId<Self::DepKind>, QueryJobInfo<Self::DepKind, Self::Query>>>
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{
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fn try_collect_active_jobs(&self) -> Option<QueryMap<Self::DepKind>> {
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self.queries.try_collect_active_jobs(**self)
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}
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@ -185,11 +179,11 @@ impl<'tcx> QueryCtxt<'tcx> {
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#[cold]
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pub(super) fn report_cycle(
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self,
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CycleError { usage, cycle: stack }: CycleError<Query>,
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CycleError { usage, cycle: stack }: CycleError,
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) -> DiagnosticBuilder<'tcx> {
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assert!(!stack.is_empty());
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let fix_span = |span: Span, query: &Query| {
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let fix_span = |span: Span, query: &QueryStackFrame| {
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self.sess.source_map().guess_head_span(query.default_span(span))
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};
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@ -371,17 +365,12 @@ macro_rules! define_queries {
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input: ($(([$($modifiers)*] [$($attr)*] [$name]))*)
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}
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#[derive(Clone, Debug)]
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pub struct Query {
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pub name: &'static str,
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hash: Fingerprint,
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description: String,
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span: Option<Span>,
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}
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mod make_query {
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use super::*;
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impl Query {
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// Create an eponymous constructor for each query.
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$(#[allow(nonstandard_style)] $(#[$attr])*
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pub fn $name<$tcx>(tcx: QueryCtxt<$tcx>, key: query_keys::$name<$tcx>) -> Self {
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pub fn $name<$tcx>(tcx: QueryCtxt<$tcx>, key: query_keys::$name<$tcx>) -> QueryStackFrame {
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let kind = dep_graph::DepKind::$name;
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let name = stringify!($name);
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let description = ty::print::with_forced_impl_filename_line(
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@ -408,22 +397,8 @@ macro_rules! define_queries {
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hasher.finish()
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};
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Self { name, description, span, hash }
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QueryStackFrame::new(name, description, span, hash)
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})*
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// FIXME(eddyb) Get more valid `Span`s on queries.
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pub fn default_span(&self, span: Span) -> Span {
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if !span.is_dummy() {
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return span;
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}
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self.span.unwrap_or(span)
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}
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}
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impl<'a> HashStable<StableHashingContext<'a>> for Query {
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fn hash_stable(&self, hcx: &mut StableHashingContext<'a>, hasher: &mut StableHasher) {
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self.hash.hash_stable(hcx, hasher)
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}
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}
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#[allow(nonstandard_style)]
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@ -450,7 +425,7 @@ macro_rules! define_queries {
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type Cache = query_storage::$name<$tcx>;
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#[inline(always)]
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fn query_state<'a>(tcx: QueryCtxt<$tcx>) -> &'a QueryState<crate::dep_graph::DepKind, Query, Self::Key>
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fn query_state<'a>(tcx: QueryCtxt<$tcx>) -> &'a QueryState<crate::dep_graph::DepKind, Self::Key>
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where QueryCtxt<$tcx>: 'a
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{
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&tcx.queries.$name
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@ -484,7 +459,7 @@ macro_rules! define_queries {
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fn handle_cycle_error(
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tcx: QueryCtxt<'tcx>,
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error: CycleError<Query>
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error: CycleError,
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) -> Self::Value {
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handle_cycle_error!([$($modifiers)*][tcx, error])
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}
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@ -587,7 +562,6 @@ macro_rules! define_queries_struct {
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$($(#[$attr])* $name: QueryState<
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crate::dep_graph::DepKind,
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Query,
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query_keys::$name<$tcx>,
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>,)*
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}
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@ -607,15 +581,15 @@ macro_rules! define_queries_struct {
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pub(crate) fn try_collect_active_jobs(
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&$tcx self,
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tcx: TyCtxt<$tcx>,
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) -> Option<FxHashMap<QueryJobId<crate::dep_graph::DepKind>, QueryJobInfo<crate::dep_graph::DepKind, Query>>> {
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) -> Option<QueryMap<crate::dep_graph::DepKind>> {
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let tcx = QueryCtxt { tcx, queries: self };
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let mut jobs = FxHashMap::default();
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let mut jobs = QueryMap::default();
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$(
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self.$name.try_collect_active_jobs(
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tcx,
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dep_graph::DepKind::$name,
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Query::$name,
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make_query::$name,
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&mut jobs,
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)?;
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)*
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@ -27,7 +27,7 @@ pub(crate) struct QueryVtable<CTX: QueryContext, K, V> {
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pub compute: fn(CTX, K) -> V,
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pub hash_result: fn(&mut CTX::StableHashingContext, &V) -> Option<Fingerprint>,
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pub handle_cycle_error: fn(CTX, CycleError<CTX::Query>) -> V,
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pub handle_cycle_error: fn(CTX, CycleError) -> V,
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pub cache_on_disk: fn(CTX, &K, Option<&V>) -> bool,
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pub try_load_from_disk: fn(CTX, SerializedDepNodeIndex) -> Option<V>,
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}
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@ -52,7 +52,7 @@ impl<CTX: QueryContext, K, V> QueryVtable<CTX, K, V> {
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(self.hash_result)(hcx, value)
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}
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pub(crate) fn handle_cycle_error(&self, tcx: CTX, error: CycleError<CTX::Query>) -> V {
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pub(crate) fn handle_cycle_error(&self, tcx: CTX, error: CycleError) -> V {
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(self.handle_cycle_error)(tcx, error)
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}
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@ -73,7 +73,7 @@ pub trait QueryAccessors<CTX: QueryContext>: QueryConfig {
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type Cache: QueryCache<Key = Self::Key, Stored = Self::Stored, Value = Self::Value>;
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// Don't use this method to access query results, instead use the methods on TyCtxt
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fn query_state<'a>(tcx: CTX) -> &'a QueryState<CTX::DepKind, CTX::Query, Self::Key>
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fn query_state<'a>(tcx: CTX) -> &'a QueryState<CTX::DepKind, Self::Key>
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where
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CTX: 'a;
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@ -90,7 +90,7 @@ pub trait QueryAccessors<CTX: QueryContext>: QueryConfig {
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result: &Self::Value,
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) -> Option<Fingerprint>;
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fn handle_cycle_error(tcx: CTX, error: CycleError<CTX::Query>) -> Self::Value;
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fn handle_cycle_error(tcx: CTX, error: CycleError) -> Self::Value;
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}
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pub trait QueryDescription<CTX: QueryContext>: QueryAccessors<CTX> {
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@ -1,4 +1,5 @@
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use crate::query::plumbing::CycleError;
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use crate::query::QueryStackFrame;
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use rustc_data_structures::fx::FxHashMap;
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use rustc_span::Span;
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@ -26,13 +27,13 @@ use {
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/// Represents a span and a query key.
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#[derive(Clone, Debug)]
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pub struct QueryInfo<Q> {
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pub struct QueryInfo {
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/// The span corresponding to the reason for which this query was required.
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pub span: Span,
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pub query: Q,
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pub query: QueryStackFrame,
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}
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pub(crate) type QueryMap<D, Q> = FxHashMap<QueryJobId<D>, QueryJobInfo<D, Q>>;
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pub type QueryMap<D> = FxHashMap<QueryJobId<D>, QueryJobInfo<D>>;
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/// A value uniquely identifying an active query job within a shard in the query cache.
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#[derive(Copy, Clone, Eq, PartialEq, Hash)]
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QueryJobId { job, shard: u16::try_from(shard).unwrap(), kind }
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}
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fn query<Q: Clone>(self, map: &QueryMap<D, Q>) -> Q {
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fn query(self, map: &QueryMap<D>) -> QueryStackFrame {
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map.get(&self).unwrap().info.query.clone()
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}
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#[cfg(parallel_compiler)]
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fn span<Q: Clone>(self, map: &QueryMap<D, Q>) -> Span {
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fn span(self, map: &QueryMap<D>) -> Span {
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map.get(&self).unwrap().job.span
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}
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#[cfg(parallel_compiler)]
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fn parent<Q: Clone>(self, map: &QueryMap<D, Q>) -> Option<QueryJobId<D>> {
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fn parent(self, map: &QueryMap<D>) -> Option<QueryJobId<D>> {
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map.get(&self).unwrap().job.parent
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}
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#[cfg(parallel_compiler)]
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fn latch<'a, Q: Clone>(self, map: &'a QueryMap<D, Q>) -> Option<&'a QueryLatch<D, Q>> {
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fn latch<'a>(self, map: &'a QueryMap<D>) -> Option<&'a QueryLatch<D>> {
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map.get(&self).unwrap().job.latch.as_ref()
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}
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}
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pub struct QueryJobInfo<D, Q> {
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pub info: QueryInfo<Q>,
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pub job: QueryJob<D, Q>,
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pub struct QueryJobInfo<D> {
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pub info: QueryInfo,
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pub job: QueryJob<D>,
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}
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/// Represents an active query job.
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#[derive(Clone)]
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pub struct QueryJob<D, Q> {
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pub struct QueryJob<D> {
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pub id: QueryShardJobId,
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/// The span corresponding to the reason for which this query was required.
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@ -97,15 +98,14 @@ pub struct QueryJob<D, Q> {
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/// The latch that is used to wait on this job.
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#[cfg(parallel_compiler)]
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latch: Option<QueryLatch<D, Q>>,
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latch: Option<QueryLatch<D>>,
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dummy: PhantomData<QueryLatch<D, Q>>,
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dummy: PhantomData<QueryLatch<D>>,
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}
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impl<D, Q> QueryJob<D, Q>
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impl<D> QueryJob<D>
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where
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D: Copy + Clone + Eq + Hash,
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Q: Clone,
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{
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/// Creates a new query job.
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pub fn new(id: QueryShardJobId, span: Span, parent: Option<QueryJobId<D>>) -> Self {
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@ -120,7 +120,7 @@ where
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}
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#[cfg(parallel_compiler)]
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pub(super) fn latch(&mut self, _id: QueryJobId<D>) -> QueryLatch<D, Q> {
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pub(super) fn latch(&mut self, _id: QueryJobId<D>) -> QueryLatch<D> {
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if self.latch.is_none() {
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self.latch = Some(QueryLatch::new());
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}
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@ -128,8 +128,8 @@ where
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}
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#[cfg(not(parallel_compiler))]
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pub(super) fn latch(&mut self, id: QueryJobId<D>) -> QueryLatch<D, Q> {
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QueryLatch { id, dummy: PhantomData }
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pub(super) fn latch(&mut self, id: QueryJobId<D>) -> QueryLatch<D> {
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QueryLatch { id }
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}
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/// Signals to waiters that the query is complete.
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@ -148,23 +148,21 @@ where
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#[cfg(not(parallel_compiler))]
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#[derive(Clone)]
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pub(super) struct QueryLatch<D, Q> {
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pub(super) struct QueryLatch<D> {
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id: QueryJobId<D>,
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dummy: PhantomData<Q>,
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}
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#[cfg(not(parallel_compiler))]
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impl<D, Q> QueryLatch<D, Q>
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impl<D> QueryLatch<D>
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where
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D: Copy + Clone + Eq + Hash,
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Q: Clone,
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{
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pub(super) fn find_cycle_in_stack(
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&self,
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query_map: QueryMap<D, Q>,
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query_map: QueryMap<D>,
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current_job: &Option<QueryJobId<D>>,
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span: Span,
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) -> CycleError<Q> {
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) -> CycleError {
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// Find the waitee amongst `current_job` parents
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let mut cycle = Vec::new();
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let mut current_job = Option::clone(current_job);
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@ -198,15 +196,15 @@ where
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}
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#[cfg(parallel_compiler)]
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struct QueryWaiter<D, Q> {
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struct QueryWaiter<D> {
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query: Option<QueryJobId<D>>,
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condvar: Condvar,
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span: Span,
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cycle: Lock<Option<CycleError<Q>>>,
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cycle: Lock<Option<CycleError>>,
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}
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#[cfg(parallel_compiler)]
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impl<D, Q> QueryWaiter<D, Q> {
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impl<D> QueryWaiter<D> {
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fn notify(&self, registry: &rayon_core::Registry) {
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rayon_core::mark_unblocked(registry);
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self.condvar.notify_one();
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@ -214,19 +212,19 @@ impl<D, Q> QueryWaiter<D, Q> {
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}
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#[cfg(parallel_compiler)]
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struct QueryLatchInfo<D, Q> {
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struct QueryLatchInfo<D> {
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complete: bool,
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waiters: Vec<Lrc<QueryWaiter<D, Q>>>,
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waiters: Vec<Lrc<QueryWaiter<D>>>,
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}
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#[cfg(parallel_compiler)]
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#[derive(Clone)]
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pub(super) struct QueryLatch<D, Q> {
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info: Lrc<Mutex<QueryLatchInfo<D, Q>>>,
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pub(super) struct QueryLatch<D> {
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info: Lrc<Mutex<QueryLatchInfo<D>>>,
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}
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#[cfg(parallel_compiler)]
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impl<D: Eq + Hash, Q: Clone> QueryLatch<D, Q> {
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impl<D: Eq + Hash> QueryLatch<D> {
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fn new() -> Self {
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QueryLatch {
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info: Lrc::new(Mutex::new(QueryLatchInfo { complete: false, waiters: Vec::new() })),
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@ -235,13 +233,13 @@ impl<D: Eq + Hash, Q: Clone> QueryLatch<D, Q> {
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}
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#[cfg(parallel_compiler)]
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impl<D, Q> QueryLatch<D, Q> {
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impl<D> QueryLatch<D> {
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/// Awaits for the query job to complete.
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pub(super) fn wait_on(
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&self,
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query: Option<QueryJobId<D>>,
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span: Span,
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) -> Result<(), CycleError<Q>> {
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) -> Result<(), CycleError> {
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let waiter =
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Lrc::new(QueryWaiter { query, span, cycle: Lock::new(None), condvar: Condvar::new() });
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self.wait_on_inner(&waiter);
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@ -256,7 +254,7 @@ impl<D, Q> QueryLatch<D, Q> {
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}
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/// Awaits the caller on this latch by blocking the current thread.
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fn wait_on_inner(&self, waiter: &Lrc<QueryWaiter<D, Q>>) {
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fn wait_on_inner(&self, waiter: &Lrc<QueryWaiter<D>>) {
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let mut info = self.info.lock();
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if !info.complete {
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// We push the waiter on to the `waiters` list. It can be accessed inside
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@ -290,7 +288,7 @@ impl<D, Q> QueryLatch<D, Q> {
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/// Removes a single waiter from the list of waiters.
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/// This is used to break query cycles.
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fn extract_waiter(&self, waiter: usize) -> Lrc<QueryWaiter<D, Q>> {
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fn extract_waiter(&self, waiter: usize) -> Lrc<QueryWaiter<D>> {
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let mut info = self.info.lock();
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debug_assert!(!info.complete);
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// Remove the waiter from the list of waiters
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@ -312,14 +310,13 @@ type Waiter<D> = (QueryJobId<D>, usize);
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/// required information to resume the waiter.
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/// If all `visit` calls returns None, this function also returns None.
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#[cfg(parallel_compiler)]
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fn visit_waiters<D, Q, F>(
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query_map: &QueryMap<D, Q>,
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fn visit_waiters<D, F>(
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query_map: &QueryMap<D>,
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query: QueryJobId<D>,
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mut visit: F,
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) -> Option<Option<Waiter<D>>>
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where
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D: Copy + Clone + Eq + Hash,
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Q: Clone,
|
||||
F: FnMut(Span, QueryJobId<D>) -> Option<Option<Waiter<D>>>,
|
||||
{
|
||||
// Visit the parent query which is a non-resumable waiter since it's on the same stack
|
||||
|
@ -349,8 +346,8 @@ where
|
|||
/// If a cycle is detected, this initial value is replaced with the span causing
|
||||
/// the cycle.
|
||||
#[cfg(parallel_compiler)]
|
||||
fn cycle_check<D, Q>(
|
||||
query_map: &QueryMap<D, Q>,
|
||||
fn cycle_check<D>(
|
||||
query_map: &QueryMap<D>,
|
||||
query: QueryJobId<D>,
|
||||
span: Span,
|
||||
stack: &mut Vec<(Span, QueryJobId<D>)>,
|
||||
|
@ -358,7 +355,6 @@ fn cycle_check<D, Q>(
|
|||
) -> Option<Option<Waiter<D>>>
|
||||
where
|
||||
D: Copy + Clone + Eq + Hash,
|
||||
Q: Clone,
|
||||
{
|
||||
if !visited.insert(query) {
|
||||
return if let Some(p) = stack.iter().position(|q| q.1 == query) {
|
||||
|
@ -394,14 +390,13 @@ where
|
|||
/// from `query` without going through any of the queries in `visited`.
|
||||
/// This is achieved with a depth first search.
|
||||
#[cfg(parallel_compiler)]
|
||||
fn connected_to_root<D, Q>(
|
||||
query_map: &QueryMap<D, Q>,
|
||||
fn connected_to_root<D>(
|
||||
query_map: &QueryMap<D>,
|
||||
query: QueryJobId<D>,
|
||||
visited: &mut FxHashSet<QueryJobId<D>>,
|
||||
) -> bool
|
||||
where
|
||||
D: Copy + Clone + Eq + Hash,
|
||||
Q: Clone,
|
||||
{
|
||||
// We already visited this or we're deliberately ignoring it
|
||||
if !visited.insert(query) {
|
||||
|
@ -422,7 +417,7 @@ where
|
|||
// Deterministically pick an query from a list
|
||||
#[cfg(parallel_compiler)]
|
||||
fn pick_query<'a, CTX, T, F>(
|
||||
query_map: &QueryMap<CTX::DepKind, CTX::Query>,
|
||||
query_map: &QueryMap<CTX::DepKind>,
|
||||
tcx: CTX,
|
||||
queries: &'a [T],
|
||||
f: F,
|
||||
|
@ -456,9 +451,9 @@ where
|
|||
/// the function returns false.
|
||||
#[cfg(parallel_compiler)]
|
||||
fn remove_cycle<CTX: QueryContext>(
|
||||
query_map: &QueryMap<CTX::DepKind, CTX::Query>,
|
||||
query_map: &QueryMap<CTX::DepKind>,
|
||||
jobs: &mut Vec<QueryJobId<CTX::DepKind>>,
|
||||
wakelist: &mut Vec<Lrc<QueryWaiter<CTX::DepKind, CTX::Query>>>,
|
||||
wakelist: &mut Vec<Lrc<QueryWaiter<CTX::DepKind>>>,
|
||||
tcx: CTX,
|
||||
) -> bool {
|
||||
let mut visited = FxHashSet::default();
|
||||
|
|
|
@ -4,7 +4,7 @@ pub use self::plumbing::*;
|
|||
mod job;
|
||||
#[cfg(parallel_compiler)]
|
||||
pub use self::job::deadlock;
|
||||
pub use self::job::{QueryInfo, QueryJob, QueryJobId, QueryJobInfo};
|
||||
pub use self::job::{QueryInfo, QueryJob, QueryJobId, QueryJobInfo, QueryMap};
|
||||
|
||||
mod caches;
|
||||
pub use self::caches::{
|
||||
|
@ -15,24 +15,63 @@ 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::fingerprint::Fingerprint;
|
||||
use rustc_data_structures::stable_hasher::{HashStable, StableHasher};
|
||||
use rustc_data_structures::sync::Lock;
|
||||
use rustc_data_structures::thin_vec::ThinVec;
|
||||
use rustc_errors::Diagnostic;
|
||||
use rustc_span::def_id::DefId;
|
||||
use rustc_span::Span;
|
||||
|
||||
/// Description of a frame in the query stack.
|
||||
///
|
||||
/// This is mostly used in case of cycles for error reporting.
|
||||
#[derive(Clone, Debug)]
|
||||
pub struct QueryStackFrame {
|
||||
pub name: &'static str,
|
||||
pub description: String,
|
||||
span: Option<Span>,
|
||||
/// This hash is used to deterministically pick
|
||||
/// a query to remove cycles in the parallel compiler.
|
||||
hash: Fingerprint,
|
||||
}
|
||||
|
||||
impl QueryStackFrame {
|
||||
#[inline]
|
||||
pub fn new(
|
||||
name: &'static str,
|
||||
description: String,
|
||||
span: Option<Span>,
|
||||
hash: Fingerprint,
|
||||
) -> Self {
|
||||
Self { name, hash, description, span }
|
||||
}
|
||||
|
||||
// FIXME(eddyb) Get more valid `Span`s on queries.
|
||||
#[inline]
|
||||
pub fn default_span(&self, span: Span) -> Span {
|
||||
if !span.is_dummy() {
|
||||
return span;
|
||||
}
|
||||
self.span.unwrap_or(span)
|
||||
}
|
||||
}
|
||||
|
||||
impl<CTX> HashStable<CTX> for QueryStackFrame {
|
||||
fn hash_stable(&self, hcx: &mut CTX, hasher: &mut StableHasher) {
|
||||
self.hash.hash_stable(hcx, hasher)
|
||||
}
|
||||
}
|
||||
|
||||
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>>;
|
||||
fn try_collect_active_jobs(&self) -> Option<QueryMap<Self::DepKind>>;
|
||||
|
||||
/// Load data from the on-disk cache.
|
||||
fn try_load_from_on_disk_cache(&self, dep_node: &DepNode<Self::DepKind>);
|
||||
|
|
|
@ -7,7 +7,7 @@ use crate::dep_graph::{DepNodeIndex, SerializedDepNodeIndex};
|
|||
use crate::query::caches::QueryCache;
|
||||
use crate::query::config::{QueryDescription, QueryVtable, QueryVtableExt};
|
||||
use crate::query::job::{QueryInfo, QueryJob, QueryJobId, QueryJobInfo, QueryShardJobId};
|
||||
use crate::query::{QueryContext, QueryMap};
|
||||
use crate::query::{QueryContext, QueryMap, QueryStackFrame};
|
||||
|
||||
#[cfg(not(parallel_compiler))]
|
||||
use rustc_data_structures::cold_path;
|
||||
|
@ -81,37 +81,36 @@ impl<C: QueryCache> QueryCacheStore<C> {
|
|||
}
|
||||
}
|
||||
|
||||
struct QueryStateShard<D, Q, K> {
|
||||
active: FxHashMap<K, QueryResult<D, Q>>,
|
||||
struct QueryStateShard<D, K> {
|
||||
active: FxHashMap<K, QueryResult<D>>,
|
||||
|
||||
/// Used to generate unique ids for active jobs.
|
||||
jobs: u32,
|
||||
}
|
||||
|
||||
impl<D, Q, K> Default for QueryStateShard<D, Q, K> {
|
||||
fn default() -> QueryStateShard<D, Q, K> {
|
||||
impl<D, K> Default for QueryStateShard<D, K> {
|
||||
fn default() -> QueryStateShard<D, K> {
|
||||
QueryStateShard { active: Default::default(), jobs: 0 }
|
||||
}
|
||||
}
|
||||
|
||||
pub struct QueryState<D, Q, K> {
|
||||
shards: Sharded<QueryStateShard<D, Q, K>>,
|
||||
pub struct QueryState<D, K> {
|
||||
shards: Sharded<QueryStateShard<D, K>>,
|
||||
}
|
||||
|
||||
/// Indicates the state of a query for a given key in a query map.
|
||||
enum QueryResult<D, Q> {
|
||||
enum QueryResult<D> {
|
||||
/// An already executing query. The query job can be used to await for its completion.
|
||||
Started(QueryJob<D, Q>),
|
||||
Started(QueryJob<D>),
|
||||
|
||||
/// The query panicked. Queries trying to wait on this will raise a fatal error which will
|
||||
/// silently panic.
|
||||
Poisoned,
|
||||
}
|
||||
|
||||
impl<D, Q, K> QueryState<D, Q, K>
|
||||
impl<D, K> QueryState<D, K>
|
||||
where
|
||||
D: Copy + Clone + Eq + Hash,
|
||||
Q: Clone,
|
||||
K: Eq + Hash + Clone + Debug,
|
||||
{
|
||||
pub fn all_inactive(&self) -> bool {
|
||||
|
@ -123,8 +122,8 @@ where
|
|||
&self,
|
||||
tcx: CTX,
|
||||
kind: D,
|
||||
make_query: fn(CTX, K) -> Q,
|
||||
jobs: &mut QueryMap<D, Q>,
|
||||
make_query: fn(CTX, K) -> QueryStackFrame,
|
||||
jobs: &mut QueryMap<D>,
|
||||
) -> Option<()> {
|
||||
// We use try_lock_shards here since we are called from the
|
||||
// deadlock handler, and this shouldn't be locked.
|
||||
|
@ -146,30 +145,28 @@ where
|
|||
}
|
||||
}
|
||||
|
||||
impl<D, Q, K> Default for QueryState<D, Q, K> {
|
||||
fn default() -> QueryState<D, Q, K> {
|
||||
impl<D, K> Default for QueryState<D, K> {
|
||||
fn default() -> QueryState<D, K> {
|
||||
QueryState { shards: Default::default() }
|
||||
}
|
||||
}
|
||||
|
||||
/// A type representing the responsibility to execute the job in the `job` field.
|
||||
/// This will poison the relevant query if dropped.
|
||||
struct JobOwner<'tcx, D, Q, C>
|
||||
struct JobOwner<'tcx, D, C>
|
||||
where
|
||||
D: Copy + Clone + Eq + Hash,
|
||||
Q: Clone,
|
||||
C: QueryCache,
|
||||
{
|
||||
state: &'tcx QueryState<D, Q, C::Key>,
|
||||
state: &'tcx QueryState<D, C::Key>,
|
||||
cache: &'tcx QueryCacheStore<C>,
|
||||
key: C::Key,
|
||||
id: QueryJobId<D>,
|
||||
}
|
||||
|
||||
impl<'tcx, D, Q, C> JobOwner<'tcx, D, Q, C>
|
||||
impl<'tcx, D, C> JobOwner<'tcx, D, C>
|
||||
where
|
||||
D: Copy + Clone + Eq + Hash,
|
||||
Q: Clone,
|
||||
C: QueryCache,
|
||||
{
|
||||
/// Either gets a `JobOwner` corresponding the query, allowing us to
|
||||
|
@ -183,13 +180,13 @@ where
|
|||
#[inline(always)]
|
||||
fn try_start<'b, CTX>(
|
||||
tcx: CTX,
|
||||
state: &'b QueryState<CTX::DepKind, CTX::Query, C::Key>,
|
||||
state: &'b QueryState<CTX::DepKind, C::Key>,
|
||||
cache: &'b QueryCacheStore<C>,
|
||||
span: Span,
|
||||
key: &C::Key,
|
||||
lookup: QueryLookup,
|
||||
query: &QueryVtable<CTX, C::Key, C::Value>,
|
||||
) -> TryGetJob<'b, CTX::DepKind, CTX::Query, C>
|
||||
) -> TryGetJob<'b, CTX::DepKind, C>
|
||||
where
|
||||
CTX: QueryContext,
|
||||
{
|
||||
|
@ -243,7 +240,7 @@ where
|
|||
// so we just return the error.
|
||||
#[cfg(not(parallel_compiler))]
|
||||
return TryGetJob::Cycle(cold_path(|| {
|
||||
let error: CycleError<CTX::Query> = latch.find_cycle_in_stack(
|
||||
let error: CycleError = latch.find_cycle_in_stack(
|
||||
tcx.try_collect_active_jobs().unwrap(),
|
||||
&tcx.current_query_job(),
|
||||
span,
|
||||
|
@ -328,10 +325,9 @@ where
|
|||
(result, diagnostics.into_inner())
|
||||
}
|
||||
|
||||
impl<'tcx, D, Q, C> Drop for JobOwner<'tcx, D, Q, C>
|
||||
impl<'tcx, D, C> Drop for JobOwner<'tcx, D, C>
|
||||
where
|
||||
D: Copy + Clone + Eq + Hash,
|
||||
Q: Clone,
|
||||
C: QueryCache,
|
||||
{
|
||||
#[inline(never)]
|
||||
|
@ -356,21 +352,20 @@ where
|
|||
}
|
||||
|
||||
#[derive(Clone)]
|
||||
pub struct CycleError<Q> {
|
||||
pub struct CycleError {
|
||||
/// The query and related span that uses the cycle.
|
||||
pub usage: Option<(Span, Q)>,
|
||||
pub cycle: Vec<QueryInfo<Q>>,
|
||||
pub usage: Option<(Span, QueryStackFrame)>,
|
||||
pub cycle: Vec<QueryInfo>,
|
||||
}
|
||||
|
||||
/// The result of `try_start`.
|
||||
enum TryGetJob<'tcx, D, Q, C>
|
||||
enum TryGetJob<'tcx, D, C>
|
||||
where
|
||||
D: Copy + Clone + Eq + Hash,
|
||||
Q: Clone,
|
||||
C: QueryCache,
|
||||
{
|
||||
/// The query is not yet started. Contains a guard to the cache eventually used to start it.
|
||||
NotYetStarted(JobOwner<'tcx, D, Q, C>),
|
||||
NotYetStarted(JobOwner<'tcx, D, C>),
|
||||
|
||||
/// The query was already completed.
|
||||
/// Returns the result of the query and its dep-node index
|
||||
|
@ -414,7 +409,7 @@ where
|
|||
|
||||
fn try_execute_query<CTX, C>(
|
||||
tcx: CTX,
|
||||
state: &QueryState<CTX::DepKind, CTX::Query, C::Key>,
|
||||
state: &QueryState<CTX::DepKind, C::Key>,
|
||||
cache: &QueryCacheStore<C>,
|
||||
span: Span,
|
||||
key: C::Key,
|
||||
|
@ -426,7 +421,7 @@ where
|
|||
C::Key: crate::dep_graph::DepNodeParams<CTX::DepContext>,
|
||||
CTX: QueryContext,
|
||||
{
|
||||
let job = match JobOwner::<'_, CTX::DepKind, CTX::Query, C>::try_start(
|
||||
let job = match JobOwner::<'_, CTX::DepKind, C>::try_start(
|
||||
tcx, state, cache, span, &key, lookup, query,
|
||||
) {
|
||||
TryGetJob::NotYetStarted(job) => job,
|
||||
|
@ -590,7 +585,7 @@ fn incremental_verify_ich<CTX, K, V: Debug>(
|
|||
fn force_query_with_job<C, CTX>(
|
||||
tcx: CTX,
|
||||
key: C::Key,
|
||||
job: JobOwner<'_, CTX::DepKind, CTX::Query, C>,
|
||||
job: JobOwner<'_, CTX::DepKind, C>,
|
||||
dep_node: DepNode<CTX::DepKind>,
|
||||
query: &QueryVtable<CTX, C::Key, C::Value>,
|
||||
) -> (C::Stored, DepNodeIndex)
|
||||
|
@ -650,7 +645,7 @@ where
|
|||
#[inline(never)]
|
||||
fn get_query_impl<CTX, C>(
|
||||
tcx: CTX,
|
||||
state: &QueryState<CTX::DepKind, CTX::Query, C::Key>,
|
||||
state: &QueryState<CTX::DepKind, C::Key>,
|
||||
cache: &QueryCacheStore<C>,
|
||||
span: Span,
|
||||
key: C::Key,
|
||||
|
@ -708,7 +703,7 @@ where
|
|||
#[inline(never)]
|
||||
fn force_query_impl<CTX, C>(
|
||||
tcx: CTX,
|
||||
state: &QueryState<CTX::DepKind, CTX::Query, C::Key>,
|
||||
state: &QueryState<CTX::DepKind, C::Key>,
|
||||
cache: &QueryCacheStore<C>,
|
||||
key: C::Key,
|
||||
span: Span,
|
||||
|
@ -736,7 +731,7 @@ fn force_query_impl<CTX, C>(
|
|||
Err(lookup) => lookup,
|
||||
};
|
||||
|
||||
let job = match JobOwner::<'_, CTX::DepKind, CTX::Query, C>::try_start(
|
||||
let job = match JobOwner::<'_, CTX::DepKind, C>::try_start(
|
||||
tcx, state, cache, span, &key, lookup, query,
|
||||
) {
|
||||
TryGetJob::NotYetStarted(job) => job,
|
||||
|
|
Loading…
Reference in New Issue