1 use std::{fmt, iter::FromIterator, sync::Arc};
3 use hir::{ExpandResult, MacroFile};
5 salsa::debug::{DebugQueryTable, TableEntry},
6 CrateId, FileId, FileTextQuery, SourceDatabase, SourceRootId,
9 symbol_index::{LibrarySymbolsQuery, SymbolIndex},
12 use itertools::Itertools;
13 use profile::{memory_usage, Bytes};
16 use syntax::{ast, Parse, SyntaxNode};
18 fn syntax_tree_stats(db: &RootDatabase) -> SyntaxTreeStats {
19 ide_db::base_db::ParseQuery.in_db(db).entries::<SyntaxTreeStats>()
21 fn macro_syntax_tree_stats(db: &RootDatabase) -> SyntaxTreeStats {
22 hir::db::ParseMacroExpansionQuery.in_db(db).entries::<SyntaxTreeStats>()
27 // Shows internal statistic about memory usage of rust-analyzer.
30 // | Editor | Action Name
32 // | VS Code | **Rust Analyzer: Status**
34 // image::https://user-images.githubusercontent.com/48062697/113065584-05f34500-91b1-11eb-98cc-5c196f76be7f.gif[]
35 pub(crate) fn status(db: &RootDatabase, file_id: Option<FileId>) -> String {
36 let mut buf = String::new();
37 format_to!(buf, "{}\n", FileTextQuery.in_db(db).entries::<FilesStats>());
38 format_to!(buf, "{}\n", LibrarySymbolsQuery.in_db(db).entries::<LibrarySymbolsStats>());
39 format_to!(buf, "{}\n", syntax_tree_stats(db));
40 format_to!(buf, "{} (Macros)\n", macro_syntax_tree_stats(db));
41 format_to!(buf, "{} in total\n", memory_usage());
42 if env::var("RA_COUNT").is_ok() {
43 format_to!(buf, "\nCounts:\n{}", profile::countme::get_all());
46 if let Some(file_id) = file_id {
47 format_to!(buf, "\nFile info:\n");
48 let crates = crate::parent_module::crate_for(db, file_id);
49 if crates.is_empty() {
50 format_to!(buf, "Does not belong to any crate");
52 let crate_graph = db.crate_graph();
54 let display_crate = |krate: CrateId| match &crate_graph[krate].display_name {
55 Some(it) => format!("{}({:?})", it, krate),
56 None => format!("{:?}", krate),
58 format_to!(buf, "Crate: {}\n", display_crate(krate));
59 let deps = crate_graph[krate]
62 .map(|dep| format!("{}={:?}", dep.name, dep.crate_id))
64 format_to!(buf, "Dependencies: {}\n", deps);
68 buf.trim().to_string()
77 impl fmt::Display for FilesStats {
78 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
79 write!(fmt, "{} of files", self.size)
83 impl FromIterator<TableEntry<FileId, Arc<String>>> for FilesStats {
84 fn from_iter<T>(iter: T) -> FilesStats
86 T: IntoIterator<Item = TableEntry<FileId, Arc<String>>>,
88 let mut res = FilesStats::default();
91 res.size += entry.value.unwrap().len();
98 pub(crate) struct SyntaxTreeStats {
100 pub(crate) retained: usize,
103 impl fmt::Display for SyntaxTreeStats {
104 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
105 write!(fmt, "{} trees, {} preserved", self.total, self.retained)
109 impl FromIterator<TableEntry<FileId, Parse<ast::SourceFile>>> for SyntaxTreeStats {
110 fn from_iter<T>(iter: T) -> SyntaxTreeStats
112 T: IntoIterator<Item = TableEntry<FileId, Parse<ast::SourceFile>>>,
114 let mut res = SyntaxTreeStats::default();
117 res.retained += entry.value.is_some() as usize;
123 impl<M> FromIterator<TableEntry<MacroFile, ExpandResult<Option<(Parse<SyntaxNode>, M)>>>>
126 fn from_iter<T>(iter: T) -> SyntaxTreeStats
128 T: IntoIterator<Item = TableEntry<MacroFile, ExpandResult<Option<(Parse<SyntaxNode>, M)>>>>,
130 let mut res = SyntaxTreeStats::default();
133 res.retained += entry.value.is_some() as usize;
140 struct LibrarySymbolsStats {
145 impl fmt::Display for LibrarySymbolsStats {
146 fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
147 write!(fmt, "{} of index symbols ({})", self.size, self.total)
151 impl FromIterator<TableEntry<SourceRootId, Arc<SymbolIndex>>> for LibrarySymbolsStats {
152 fn from_iter<T>(iter: T) -> LibrarySymbolsStats
154 T: IntoIterator<Item = TableEntry<SourceRootId, Arc<SymbolIndex>>>,
156 let mut res = LibrarySymbolsStats::default();
158 let symbols = entry.value.unwrap();
159 res.total += symbols.len();
160 res.size += symbols.memory_size();