1 files changed, 35 insertions, 6 deletions
diff --git a/cli/lsp/performance.rs b/cli/lsp/performance.rs
index 9a2ac24ab..87e29f3db 100644
--- a/cli/lsp/performance.rs
+++ b/cli/lsp/performance.rs
@@ -2,6 +2,8 @@
 
 use deno_core::serde::Deserialize;
 use deno_core::serde::Serialize;
+use deno_core::serde_json::json;
+use log::debug;
 use std::cmp;
 use std::collections::HashMap;
 use std::collections::VecDeque;
@@ -132,11 +134,29 @@ impl Performance {
   /// Marks the start of a measurement which returns a performance mark
   /// structure, which is then passed to `.measure()` to finalize the duration
   /// and add it to the internal buffer.
-  pub fn mark<S: AsRef<str>>(&self, name: S) -> PerformanceMark {
+  pub fn mark<S: AsRef<str>, V: Serialize>(
+    &self,
+    name: S,
+    maybe_args: Option<V>,
+  ) -> PerformanceMark {
     let name = name.as_ref();
     let mut counts = self.counts.lock().unwrap();
     let count = counts.entry(name.to_string()).or_insert(0);
     *count += 1;
+    let msg = if let Some(args) = maybe_args {
+      json!({
+        "type": "mark",
+        "name": name,
+        "count": count,
+        "args": args,
+      })
+    } else {
+      json!({
+        "type": "mark",
+        "name": name,
+      })
+    };
+    debug!("{},", msg);
     PerformanceMark {
       name: name.to_string(),
       count: *count,
@@ -149,6 +169,15 @@ impl Performance {
   /// measurement to the internal buffer.
   pub fn measure(&self, mark: PerformanceMark) -> Duration {
     let measure = PerformanceMeasure::from(mark);
+    debug!(
+      "{},",
+      json!({
+        "type": "measure",
+        "name": measure.name,
+        "count": measure.count,
+        "duration": measure.duration.as_millis() as u32,
+      })
+    );
     let duration = measure.duration;
     let mut measures = self.measures.lock().unwrap();
     measures.push_front(measure);
@@ -171,9 +200,9 @@ mod tests {
   #[test]
   fn test_average() {
     let performance = Performance::default();
-    let mark1 = performance.mark("a");
-    let mark2 = performance.mark("a");
-    let mark3 = performance.mark("b");
+    let mark1 = performance.mark("a", None::<()>);
+    let mark2 = performance.mark("a", None::<()>);
+    let mark3 = performance.mark("b", None::<()>);
     performance.measure(mark2);
     performance.measure(mark1);
     performance.measure(mark3);
@@ -187,8 +216,8 @@ mod tests {
   #[test]
   fn test_averages() {
     let performance = Performance::default();
-    let mark1 = performance.mark("a");
-    let mark2 = performance.mark("a");
+    let mark1 = performance.mark("a", None::<()>);
+    let mark2 = performance.mark("a", None::<()>);
     performance.measure(mark2);
     performance.measure(mark1);
     let averages = performance.averages();