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|
use std::{
fmt,
iter::FromIterator,
sync::Arc,
};
use ra_syntax::{TreeArc, SyntaxNode};
use ra_db::{
FileTextQuery, SourceRootId,
salsa::{Database, debug::{DebugQueryTable, TableEntry}},
};
use hir::HirFileId;
use crate::{
FileId, db::RootDatabase,
symbol_index::{SymbolIndex, LibrarySymbolsQuery},
};
pub(crate) fn syntax_tree_stats(db: &RootDatabase) -> SyntaxTreeStats {
db.query(hir::db::ParseOrExpandQuery).entries::<SyntaxTreeStats>()
}
pub(crate) fn status(db: &RootDatabase) -> String {
let files_stats = db.query(FileTextQuery).entries::<FilesStats>();
let syntax_tree_stats = syntax_tree_stats(db);
let symbols_stats = db.query(LibrarySymbolsQuery).entries::<LibrarySymbolsStats>();
format!(
"{}\n{}\n{}\n\n\nmemory:\n{}\ngc {:?} seconds ago",
files_stats,
symbols_stats,
syntax_tree_stats,
MemoryStats::current(),
db.last_gc.elapsed().as_secs(),
)
}
#[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,
retained_size: Bytes,
}
impl fmt::Display for SyntaxTreeStats {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{} trees, {} ({}) retained", self.total, self.retained, self.retained_size,)
}
}
impl FromIterator<TableEntry<HirFileId, Option<TreeArc<SyntaxNode>>>> for SyntaxTreeStats {
fn from_iter<T>(iter: T) -> SyntaxTreeStats
where
T: IntoIterator<Item = TableEntry<HirFileId, Option<TreeArc<SyntaxNode>>>>,
{
let mut res = SyntaxTreeStats::default();
for entry in iter {
res.total += 1;
if let Some(tree) = entry.value.and_then(|it| it) {
res.retained += 1;
res.retained_size += tree.memory_size_of_subtree();
}
}
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, "{} ({}) symbols", self.total, self.size,)
}
}
impl FromIterator<TableEntry<SourceRootId, Arc<SymbolIndex>>> for LibrarySymbolsStats {
fn from_iter<T>(iter: T) -> LibrarySymbolsStats
where
T: IntoIterator<Item = TableEntry<SourceRootId, Arc<SymbolIndex>>>,
{
let mut res = LibrarySymbolsStats::default();
for entry in iter {
let value = entry.value.unwrap();
res.total += value.len();
res.size += value.memory_size();
}
res
}
}
struct MemoryStats {
allocated: Bytes,
resident: Bytes,
}
impl MemoryStats {
#[cfg(feature = "jemalloc")]
fn current() -> MemoryStats {
jemalloc_ctl::epoch().unwrap();
MemoryStats {
allocated: Bytes(jemalloc_ctl::stats::allocated().unwrap()),
resident: Bytes(jemalloc_ctl::stats::resident().unwrap()),
}
}
#[cfg(not(feature = "jemalloc"))]
fn current() -> MemoryStats {
MemoryStats { allocated: Bytes(0), resident: Bytes(0) }
}
}
impl fmt::Display for MemoryStats {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
write!(fmt, "{} allocated {} resident", self.allocated, self.resident,)
}
}
#[derive(Default)]
struct Bytes(usize);
impl fmt::Display for Bytes {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let bytes = self.0;
if bytes < 4096 {
return write!(f, "{} bytes", bytes);
}
let kb = bytes / 1024;
if kb < 4096 {
return write!(f, "{}kb", kb);
}
let mb = kb / 1024;
write!(f, "{}mb", mb)
}
}
impl std::ops::AddAssign<usize> for Bytes {
fn add_assign(&mut self, x: usize) {
self.0 += x;
}
}
|
