From ec1c7e1a1f2f7c751fd6012b624dc476903ecb2d Mon Sep 17 00:00:00 2001
From: Brian Warner <warner@lothar.com>
Date: Tue, 17 Aug 2021 21:44:55 -0700
Subject: [PATCH] fix(swingset): record cranks and crankhash/activityhash in
 slog

refs #3720
---
 packages/SwingSet/src/kernel/kernel.js | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/packages/SwingSet/src/kernel/kernel.js b/packages/SwingSet/src/kernel/kernel.js
index 46a08a29f35..61c255e30fd 100644
--- a/packages/SwingSet/src/kernel/kernel.js
+++ b/packages/SwingSet/src/kernel/kernel.js
@@ -743,6 +743,7 @@ export default function buildKernel(
       console.error(`We're currently already running at`, processQueueRunning);
       assert.fail(X`Kernel reentrancy is forbidden`);
     }
+    kernelSlog.write({ type: 'crank-start', message });
     /** @type { PolicyInput } */
     let policyInput = ['none'];
     try {
@@ -800,7 +801,14 @@ export default function buildKernel(
       }
       kernelKeeper.processRefcounts();
       kernelKeeper.saveStats();
-      kernelKeeper.commitCrank();
+      const { crankhash, activityhash } = kernelKeeper.commitCrank();
+      const crankNum = kernelKeeper.getCrankNumber();
+      kernelSlog.write({
+        type: 'crank-finish',
+        crankNum,
+        crankhash,
+        activityhash,
+      });
       kernelKeeper.incrementCrankNumber();
     } finally {
       processQueueRunning = undefined;