rust-lang/rust
1
0
Fork 0
Code Issues Pull Requests Actions 1 Packages Projects Releases Wiki Activity

internal: more visibility into why things happen

Browse Source
This commit is contained in:
Aleksey Kladov
2022-04-16 13:16:58 +01:00
parent 6f037da8cb
commit 3f4235d59b
4 changed files with 35 additions and 28 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
crates/rust-analyzer/src/op_queue.rs
View File

@@ -1,29 +1,30 @@
//! Bookkeeping to make sure only one long-running operation is being executed
//! at a time.
pub(crate) type Cause = String;
pub(crate) struct OpQueue<Output> {
op_requested: bool,
op_requested: Option<Cause>,
op_in_progress: bool,
last_op_result: Output,
}
impl<Output: Default> Default for OpQueue<Output> {
fn default() -> Self {
Self { op_requested: false, op_in_progress: false, last_op_result: Default::default() }
Self { op_requested: None, op_in_progress: false, last_op_result: Default::default() }
}
}
impl<Output> OpQueue<Output> {
pub(crate) fn request_op(&mut self) {
self.op_requested = true;
pub(crate) fn request_op(&mut self, reason: Cause) {
self.op_requested = Some(reason);
}
pub(crate) fn should_start_op(&mut self) -> bool {
pub(crate) fn should_start_op(&mut self) -> Option<Cause> {
if self.op_in_progress {
return false;
return None;
}
self.op_in_progress = self.op_requested;
self.op_requested = false;
self.op_in_progress
self.op_in_progress = self.op_requested.is_some();
self.op_requested.take()
}
pub(crate) fn op_completed(&mut self, result: Output) {
assert!(self.op_in_progress);
@@ -38,6 +39,6 @@ impl<Output> OpQueue<Output> {
self.op_in_progress
}
pub(crate) fn op_requested(&self) -> bool {
self.op_requested
self.op_requested.is_some()
}
}