chore: capture time inside benchmark operation

Author: joshamaju

tasks/bench/scenarios/effect.startup.ts

@@ -1,12 +1,20 @@
-import { Effect } from "npm:effect";
-import { call } from "../../../mod.ts";
+import { Effect, Fiber } from "npm:effect";
+import { call, ensure } from "../../../mod.ts";
 import { scenario } from "./scenario.ts";
 
 await scenario("effect.startup", function* (_, exit) {
+  let start = performance.now();
+
   const startup = Effect.gen(function* () {
-    exit(performance.now());
+    exit(performance.now() - start);
     yield* Effect.promise(() => Promise.resolve());
   });
 
-  return yield* call(() => Effect.runPromise(startup));
+  const fiber = Effect.runFork(startup);
+
+  yield* ensure(function* () {
+    yield* call(() => Effect.runPromise(Fiber.interrupt(fiber)));
+  });
+
+  return yield* call(() => Effect.runPromise(Fiber.join(fiber)));
 });

tasks/bench/scenarios/effection.startup.ts

@@ -2,8 +2,10 @@ import { call, type Operation } from "../../../mod.ts";
 import { scenario } from "./scenario.ts";
 
 await scenario("effection.startup", function* (_, exit) {
+  let start = performance.now();
+
   function* startup(): Operation<void> {
-    exit(performance.now());
+    exit(performance.now() - start);
     yield* call(() => Promise.resolve());
   }
 

tasks/bench/scenarios/scenario.ts

@@ -71,7 +71,7 @@ export function scenario(
               times.push(time);
 
               if (entryTime) {
-                entryTimes.push(entryTime - start);
+                entryTimes.push(entryTime);
               }
             }