ide_db/
apply_change.rs

1//! Applies changes to the IDE state transactionally.
2
3use std::time::{Duration, Instant};
4
5use profile::Bytes;
6use salsa::Database as _;
7
8use crate::{ChangeWithProcMacros, RootDatabase};
9
10impl RootDatabase {
11    pub fn apply_change(&mut self, change: ChangeWithProcMacros) -> Duration {
12        let _p = tracing::info_span!("RootDatabase::apply_change").entered();
13        let now = Instant::now();
14        self.trigger_cancellation();
15        let elapsed = now.elapsed();
16        tracing::trace!("apply_change {:?}", change);
17        change.apply(self);
18        elapsed
19    }
20
21    // Feature: Memory Usage
22    //
23    // Clears rust-analyzer's internal database and prints memory usage statistics.
24    //
25    // | Editor  | Action Name |
26    // |---------|-------------|
27    // | VS Code | **rust-analyzer: Memory Usage (Clears Database)**
28
29    // ![Memory Usage](https://user-images.githubusercontent.com/48062697/113065592-08559f00-91b1-11eb-8c96-64b88068ec02.gif)
30    pub fn per_query_memory_usage(&mut self) -> Vec<(String, Bytes, usize)> {
31        let mut acc: Vec<(String, Bytes, usize)> = vec![];
32
33        // fn collect_query_count<'q, Q>(table: &QueryTable<'q, Q>) -> usize
34        // where
35        //     QueryTable<'q, Q>: DebugQueryTable,
36        //     Q: Query,
37        //     <Q as Query>::Storage: 'q,
38        // {
39        //     struct EntryCounter(usize);
40        //     impl<K, V> FromIterator<TableEntry<K, V>> for EntryCounter {
41        //         fn from_iter<T>(iter: T) -> EntryCounter
42        //         where
43        //             T: IntoIterator<Item = TableEntry<K, V>>,
44        //         {
45        //             EntryCounter(iter.into_iter().count())
46        //         }
47        //     }
48        //     table.entries::<EntryCounter>().0
49        // }
50
51        macro_rules! purge_each_query {
52            ($($q:path)*) => {$(
53                let before = memory_usage().allocated;
54                let table = $q.in_db(self);
55                let count = collect_query_count(&table);
56                table.purge();
57                let after = memory_usage().allocated;
58                let q: $q = Default::default();
59                let name = format!("{:?}", q);
60                acc.push((name, before - after, count));
61            )*}
62        }
63        purge_each_query![
64            // // SymbolsDatabase
65            // crate::symbol_index::ModuleSymbolsQuery
66            // crate::symbol_index::LibrarySymbolsQuery
67            // crate::symbol_index::LocalRootsQuery
68            // crate::symbol_index::LibraryRootsQuery
69            // // HirDatabase
70            // hir::db::AdtDatumQuery
71            // hir::db::AdtVarianceQuery
72            // hir::db::AssociatedTyDataQuery
73            // hir::db::AssociatedTyValueQuery
74            // hir::db::BorrowckQuery
75            // hir::db::CallableItemSignatureQuery
76            // hir::db::ConstEvalDiscriminantQuery
77            // hir::db::ConstEvalQuery
78            // hir::db::ConstEvalStaticQuery
79            // hir::db::ConstParamTyQuery
80            // hir::db::DynCompatibilityOfTraitQuery
81            // hir::db::FieldTypesQuery
82            // hir::db::FnDefDatumQuery
83            // hir::db::FnDefVarianceQuery
84            // hir::db::GenericDefaultsQuery
85            // hir::db::GenericPredicatesForParamQuery
86            // hir::db::GenericPredicatesQuery
87            // hir::db::GenericPredicatesWithoutParentQuery
88            // hir::db::ImplDatumQuery
89            // hir::db::ImplSelfTyQuery
90            // hir::db::ImplTraitQuery
91            // hir::db::IncoherentInherentImplCratesQuery
92            // hir::db::InferQuery
93            // hir::db::InherentImplsInBlockQuery
94            // hir::db::InherentImplsInCrateQuery
95            // hir::db::InternCallableDefQuery
96            // hir::db::InternClosureQuery
97            // hir::db::InternCoroutineQuery
98            // hir::db::InternImplTraitIdQuery
99            // hir::db::InternLifetimeParamIdQuery
100            // hir::db::InternTypeOrConstParamIdQuery
101            // hir::db::LayoutOfAdtQuery
102            // hir::db::LayoutOfTyQuery
103            // hir::db::LookupImplMethodQuery
104            // hir::db::MirBodyForClosureQuery
105            // hir::db::MirBodyQuery
106            // hir::db::MonomorphizedMirBodyForClosureQuery
107            // hir::db::MonomorphizedMirBodyQuery
108            // hir::db::ProgramClausesForChalkEnvQuery
109            // hir::db::ReturnTypeImplTraitsQuery
110            // hir::db::TargetDataLayoutQuery
111            // hir::db::TraitDatumQuery
112            // hir::db::TraitEnvironmentQuery
113            // hir::db::TraitImplsInBlockQuery
114            // hir::db::TraitImplsInCrateQuery
115            // hir::db::TraitImplsInDepsQuery
116            // hir::db::TraitSolveQuery
117            // hir::db::TyQuery
118            // hir::db::TypeAliasImplTraitsQuery
119            // hir::db::ValueTyQuery
120
121            // // InternDatabase
122            // hir::db::InternFunctionQuery
123            // hir::db::InternStructQuery
124            // hir::db::InternUnionQuery
125            // hir::db::InternEnumQuery
126            // hir::db::InternConstQuery
127            // hir::db::InternStaticQuery
128            // hir::db::InternTraitQuery
129            // hir::db::InternTraitAliasQuery
130            // hir::db::InternTypeAliasQuery
131            // hir::db::InternImplQuery
132            // hir::db::InternExternBlockQuery
133            // hir::db::InternBlockQuery
134            // hir::db::InternMacro2Query
135            // hir::db::InternProcMacroQuery
136            // hir::db::InternMacroRulesQuery
137
138            // // LineIndexDatabase
139            // crate::LineIndexQuery
140
141            // // SourceDatabase
142            // base_db::ParseQuery
143            // base_db::ParseErrorsQuery
144            // base_db::AllCratesQuery
145            // base_db::InternUniqueCrateDataQuery
146            // base_db::InternUniqueCrateDataLookupQuery
147            // base_db::CrateDataQuery
148            // base_db::ExtraCrateDataQuery
149            // base_db::CrateCfgQuery
150            // base_db::CrateEnvQuery
151            // base_db::CrateWorkspaceDataQuery
152
153            // // SourceDatabaseExt
154            // base_db::FileTextQuery
155            // base_db::CompressedFileTextQuery
156            // base_db::FileSourceRootQuery
157            // base_db::SourceRootQuery
158            // base_db::SourceRootCratesQuery
159        ];
160
161        acc.sort_by_key(|it| std::cmp::Reverse(it.1));
162        acc
163    }
164}
ide_db/apply_change.rs

ide_db/
apply_change.rs
