From e7df0ad2fb48166937fdd061e1ae559c72a81990 Mon Sep 17 00:00:00 2001
From: Aleksey Kladov <aleksey.kladov@gmail.com>
Date: Tue, 29 Sep 2020 21:13:58 +0200
Subject: Remove periodic gc stub

---
 crates/ide_db/src/change.rs     | 15 +--------------
 crates/ide_db/src/lib.rs        | 15 ++-------------
 crates/ide_db/src/wasm_shims.rs | 19 -------------------
 3 files changed, 3 insertions(+), 46 deletions(-)
 delete mode 100644 crates/ide_db/src/wasm_shims.rs

(limited to 'crates/ide_db')

diff --git a/crates/ide_db/src/change.rs b/crates/ide_db/src/change.rs
index 8b4fd7ab8..7f98111c4 100644
--- a/crates/ide_db/src/change.rs
+++ b/crates/ide_db/src/change.rs
@@ -1,7 +1,7 @@
 //! Defines a unit of change that can applied to a state of IDE to get the next
 //! state. Changes are transactional.
 
-use std::{fmt, sync::Arc, time};
+use std::{fmt, sync::Arc};
 
 use base_db::{
     salsa::{Database, Durability, SweepStrategy},
@@ -81,8 +81,6 @@ impl fmt::Debug for RootChange {
     }
 }
 
-const GC_COOLDOWN: time::Duration = time::Duration::from_millis(100);
-
 impl RootDatabase {
     pub fn request_cancellation(&mut self) {
         let _p = profile::span("RootDatabase::request_cancellation");
@@ -126,23 +124,12 @@ impl RootDatabase {
         }
     }
 
-    pub fn maybe_collect_garbage(&mut self) {
-        if cfg!(feature = "wasm") {
-            return;
-        }
-
-        if self.last_gc_check.elapsed() > GC_COOLDOWN {
-            self.last_gc_check = crate::wasm_shims::Instant::now();
-        }
-    }
-
     pub fn collect_garbage(&mut self) {
         if cfg!(feature = "wasm") {
             return;
         }
 
         let _p = profile::span("RootDatabase::collect_garbage");
-        self.last_gc = crate::wasm_shims::Instant::now();
 
         let sweep = SweepStrategy::default().discard_values().sweep_all_revisions();
 
diff --git a/crates/ide_db/src/lib.rs b/crates/ide_db/src/lib.rs
index 70ada02f3..0d209c6ec 100644
--- a/crates/ide_db/src/lib.rs
+++ b/crates/ide_db/src/lib.rs
@@ -10,7 +10,6 @@ pub mod defs;
 pub mod search;
 pub mod imports_locator;
 pub mod source_change;
-mod wasm_shims;
 
 use std::{fmt, sync::Arc};
 
@@ -36,8 +35,6 @@ use crate::{line_index::LineIndex, symbol_index::SymbolsDatabase};
 )]
 pub struct RootDatabase {
     storage: salsa::Storage<RootDatabase>,
-    pub last_gc: crate::wasm_shims::Instant,
-    pub last_gc_check: crate::wasm_shims::Instant,
 }
 
 impl fmt::Debug for RootDatabase {
@@ -99,11 +96,7 @@ impl Default for RootDatabase {
 
 impl RootDatabase {
     pub fn new(lru_capacity: Option<usize>) -> RootDatabase {
-        let mut db = RootDatabase {
-            storage: salsa::Storage::default(),
-            last_gc: crate::wasm_shims::Instant::now(),
-            last_gc_check: crate::wasm_shims::Instant::now(),
-        };
+        let mut db = RootDatabase { storage: salsa::Storage::default() };
         db.set_crate_graph_with_durability(Default::default(), Durability::HIGH);
         db.set_local_roots_with_durability(Default::default(), Durability::HIGH);
         db.set_library_roots_with_durability(Default::default(), Durability::HIGH);
@@ -121,11 +114,7 @@ impl RootDatabase {
 
 impl salsa::ParallelDatabase for RootDatabase {
     fn snapshot(&self) -> salsa::Snapshot<RootDatabase> {
-        salsa::Snapshot::new(RootDatabase {
-            storage: self.storage.snapshot(),
-            last_gc: self.last_gc,
-            last_gc_check: self.last_gc_check,
-        })
+        salsa::Snapshot::new(RootDatabase { storage: self.storage.snapshot() })
     }
 }
 
diff --git a/crates/ide_db/src/wasm_shims.rs b/crates/ide_db/src/wasm_shims.rs
deleted file mode 100644
index 7af9f9d9b..000000000
--- a/crates/ide_db/src/wasm_shims.rs
+++ /dev/null
@@ -1,19 +0,0 @@
-//! A version of `std::time::Instant` that doesn't panic in WASM.
-
-#[cfg(not(feature = "wasm"))]
-pub use std::time::Instant;
-
-#[cfg(feature = "wasm")]
-#[derive(Clone, Copy, Debug)]
-pub struct Instant;
-
-#[cfg(feature = "wasm")]
-impl Instant {
-    pub fn now() -> Self {
-        Self
-    }
-
-    pub fn elapsed(&self) -> std::time::Duration {
-        std::time::Duration::new(0, 0)
-    }
-}
-- 
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