1 use crate::ty::query::queries;
3 use rustc_hir::def_id::{DefId, LOCAL_CRATE};
4 use rustc_query_system::query::{QueryAccessors, QueryCache, QueryContext, QueryState};
6 use std::any::type_name;
9 #[cfg(debug_assertions)]
10 use std::sync::atomic::Ordering;
13 fn key_stats(&self, stats: &mut QueryStats);
16 impl<T> KeyStats for T {
17 default fn key_stats(&self, _: &mut QueryStats) {}
20 impl KeyStats for DefId {
21 fn key_stats(&self, stats: &mut QueryStats) {
22 if self.krate == LOCAL_CRATE {
23 stats.local_def_id_keys = Some(stats.local_def_id_keys.unwrap_or(0) + 1);
33 key_type: &'static str,
35 value_type: &'static str,
37 local_def_id_keys: Option<usize>,
40 fn stats<D, Q, C>(name: &'static str, map: &QueryState<D, Q, C>) -> QueryStats
42 D: Copy + Clone + Eq + Hash,
46 let mut stats = QueryStats {
48 #[cfg(debug_assertions)]
49 cache_hits: map.cache_hits.load(Ordering::Relaxed),
50 #[cfg(not(debug_assertions))]
52 key_size: mem::size_of::<C::Key>(),
53 key_type: type_name::<C::Key>(),
54 value_size: mem::size_of::<C::Value>(),
55 value_type: type_name::<C::Value>(),
56 entry_count: map.iter_results(|results| results.count()),
57 local_def_id_keys: None,
59 map.iter_results(|results| {
60 for (key, _, _) in results {
61 key.key_stats(&mut stats)
67 pub fn print_stats(tcx: TyCtxt<'_>) {
68 let queries = query_stats(tcx);
70 if cfg!(debug_assertions) {
71 let hits: usize = queries.iter().map(|s| s.cache_hits).sum();
72 let results: usize = queries.iter().map(|s| s.entry_count).sum();
73 println!("\nQuery cache hit rate: {}", hits as f64 / (hits + results) as f64);
76 let mut query_key_sizes = queries.clone();
77 query_key_sizes.sort_by_key(|q| q.key_size);
78 println!("\nLarge query keys:");
79 for q in query_key_sizes.iter().rev().filter(|q| q.key_size > 8) {
80 println!(" {} - {} x {} - {}", q.name, q.key_size, q.entry_count, q.key_type);
83 let mut query_value_sizes = queries.clone();
84 query_value_sizes.sort_by_key(|q| q.value_size);
85 println!("\nLarge query values:");
86 for q in query_value_sizes.iter().rev().filter(|q| q.value_size > 8) {
87 println!(" {} - {} x {} - {}", q.name, q.value_size, q.entry_count, q.value_type);
90 if cfg!(debug_assertions) {
91 let mut query_cache_hits = queries.clone();
92 query_cache_hits.sort_by_key(|q| q.cache_hits);
93 println!("\nQuery cache hits:");
94 for q in query_cache_hits.iter().rev() {
99 q.cache_hits as f64 / (q.cache_hits + q.entry_count) as f64
104 let mut query_value_count = queries.clone();
105 query_value_count.sort_by_key(|q| q.entry_count);
106 println!("\nQuery value count:");
107 for q in query_value_count.iter().rev() {
108 println!(" {} - {}", q.name, q.entry_count);
111 let mut def_id_density: Vec<_> =
112 queries.iter().filter(|q| q.local_def_id_keys.is_some()).collect();
113 def_id_density.sort_by_key(|q| q.local_def_id_keys.unwrap());
114 println!("\nLocal DefId density:");
115 let total = tcx.hir().definitions().def_index_count() as f64;
116 for q in def_id_density.iter().rev() {
117 let local = q.local_def_id_keys.unwrap();
118 println!(" {} - {} = ({}%)", q.name, local, (local as f64 * 100.0) / total);
122 macro_rules! print_stats {
123 (<$tcx:tt> $($category:tt {
124 $($(#[$attr:meta])* [$($modifiers:tt)*] fn $name:ident: $node:ident($K:ty) -> $V:ty,)*
126 fn query_stats(tcx: TyCtxt<'_>) -> Vec<QueryStats> {
127 let mut queries = Vec::new();
130 queries.push(stats::<
131 crate::dep_graph::DepKind,
132 <TyCtxt<'_> as QueryContext>::Query,
133 <queries::$name<'_> as QueryAccessors<TyCtxt<'_>>>::Cache,
145 rustc_query_append! { [print_stats!][<'tcx>] }