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|
use std::{fmt, iter::FromIterator, sync::Arc};
use hir::{MacroFile, MacroResult};
use ide_db::base_db::{
salsa::debug::{DebugQueryTable, TableEntry},
CrateId, FileId, FileTextQuery, SourceDatabase, SourceRootId,
};
use ide_db::{
symbol_index::{LibrarySymbolsQuery, SymbolIndex},
RootDatabase,
};
use itertools::Itertools;
use profile::{memory_usage, Bytes};
use rustc_hash::FxHashMap;
use stdx::format_to;
use syntax::{ast, Parse, SyntaxNode};
fn syntax_tree_stats(db: &RootDatabase) -> SyntaxTreeStats {
ide_db::base_db::ParseQuery.in_db(db).entries::<SyntaxTreeStats>()
}
fn macro_syntax_tree_stats(db: &RootDatabase) -> SyntaxTreeStats {
hir::db::ParseMacroQuery.in_db(db).entries::<SyntaxTreeStats>()
}
// Feature: Status
//
// Shows internal statistic about memory usage of rust-analyzer.
//
// |===
// | Editor | Action Name
//
// | VS Code | **Rust Analyzer: Status**
// |===
pub(crate) fn status(db: &RootDatabase, file_id: Option<FileId>) -> String {
let mut buf = String::new();
format_to!(buf, "{}\n", FileTextQuery.in_db(db).entries::<FilesStats>());
format_to!(buf, "{}\n", LibrarySymbolsQuery.in_db(db).entries::<LibrarySymbolsStats>());
format_to!(buf, "{}\n", syntax_tree_stats(db));
format_to!(buf, "{} (macros)\n", macro_syntax_tree_stats(db));
format_to!(buf, "{} total\n", memory_usage());
if let Some(file_id) = file_id {
format_to!(buf, "\nfile info:\n");
let krate = crate::parent_module::crate_for(db, file_id).pop();
match krate {
Some(krate) => {
let crate_graph = db.crate_graph();
let display_crate = |krate: CrateId| match &crate_graph[krate].display_name {
Some(it) => format!("{}({:?})", it, krate),
None => format!("{:?}", krate),
};
format_to!(buf, "crate: {}\n", display_crate(krate));
let deps = crate_graph[krate]
.dependencies
.iter()
.map(|dep| format!("{}={:?}", dep.name, dep.crate_id))
.format(", ");
format_to!(buf, "deps: {}\n", deps);
}
None => format_to!(buf, "does not belong to any crate"),
}
}
buf
}
#[derive(Default)]
struct FilesStats {
total: usize,
size: Bytes,
}
impl fmt::Display for FilesStats {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{} ({}) files", self.total, self.size)
}
}
impl FromIterator<TableEntry<FileId, Arc<String>>> for FilesStats {
fn from_iter<T>(iter: T) -> FilesStats
where
T: IntoIterator<Item = TableEntry<FileId, Arc<String>>>,
{
let mut res = FilesStats::default();
for entry in iter {
res.total += 1;
res.size += entry.value.unwrap().len();
}
res
}
}
#[derive(Default)]
pub(crate) struct SyntaxTreeStats {
total: usize,
pub(crate) retained: usize,
}
impl fmt::Display for SyntaxTreeStats {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{} trees, {} retained", self.total, self.retained)
}
}
impl FromIterator<TableEntry<FileId, Parse<ast::SourceFile>>> for SyntaxTreeStats {
fn from_iter<T>(iter: T) -> SyntaxTreeStats
where
T: IntoIterator<Item = TableEntry<FileId, Parse<ast::SourceFile>>>,
{
let mut res = SyntaxTreeStats::default();
for entry in iter {
res.total += 1;
res.retained += entry.value.is_some() as usize;
}
res
}
}
impl<M> FromIterator<TableEntry<MacroFile, MacroResult<(Parse<SyntaxNode>, M)>>>
for SyntaxTreeStats
{
fn from_iter<T>(iter: T) -> SyntaxTreeStats
where
T: IntoIterator<Item = TableEntry<MacroFile, MacroResult<(Parse<SyntaxNode>, M)>>>,
{
let mut res = SyntaxTreeStats::default();
for entry in iter {
res.total += 1;
res.retained += entry.value.is_some() as usize;
}
res
}
}
#[derive(Default)]
struct LibrarySymbolsStats {
total: usize,
size: Bytes,
}
impl fmt::Display for LibrarySymbolsStats {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{} ({}) index symbols", self.total, self.size)
}
}
impl FromIterator<TableEntry<(), Arc<FxHashMap<SourceRootId, SymbolIndex>>>>
for LibrarySymbolsStats
{
fn from_iter<T>(iter: T) -> LibrarySymbolsStats
where
T: IntoIterator<Item = TableEntry<(), Arc<FxHashMap<SourceRootId, SymbolIndex>>>>,
{
let mut res = LibrarySymbolsStats::default();
for entry in iter {
let value = entry.value.unwrap();
for symbols in value.values() {
res.total += symbols.len();
res.size += symbols.memory_size();
}
}
res
}
}
|
