Use two separate functions instead of branch by flag

Author: sebmarkbage

packages/react-reconciler/src/ReactFiberWorkLoop.js

@@ -225,7 +225,8 @@ import {
   recordCommitTime,
   resetNestedUpdateFlag,
   startProfilerTimer,
-  stopProfilerTimerIfRunningAndRecordDelta,
+  stopProfilerTimerIfRunningAndRecordDuration,
+  stopProfilerTimerIfRunningAndRecordIncompleteDuration,
   syncNestedUpdateFlag,
 } from './ReactProfilerTimer';
 
@@ -1844,7 +1845,7 @@ function handleThrow(root: FiberRoot, thrownValue: any): void {
     // Record the time spent rendering before an error was thrown. This
     // avoids inaccurate Profiler durations in the case of a
     // suspended render.
-    stopProfilerTimerIfRunningAndRecordDelta(erroredWork, true);
+    stopProfilerTimerIfRunningAndRecordDuration(erroredWork);
   }
 
   if (enableSchedulingProfiler) {
@@ -2516,7 +2517,7 @@ function performUnitOfWork(unitOfWork: Fiber): void {
     } else {
       next = beginWork(current, unitOfWork, entangledRenderLanes);
     }
-    stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true);
+    stopProfilerTimerIfRunningAndRecordDuration(unitOfWork);
   } else {
     if (__DEV__) {
       next = runWithFiberInDEV(
@@ -2660,7 +2661,7 @@ function replayBeginWork(unitOfWork: Fiber): null | Fiber {
     }
   }
   if (isProfilingMode) {
-    stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true);
+    stopProfilerTimerIfRunningAndRecordDuration(unitOfWork);
   }
 
   return next;
@@ -2851,7 +2852,7 @@ function completeUnitOfWork(unitOfWork: Fiber): void {
         next = completeWork(current, completedWork, entangledRenderLanes);
       }
       // Update render duration assuming we didn't error.
-      stopProfilerTimerIfRunningAndRecordDelta(completedWork, false);
+      stopProfilerTimerIfRunningAndRecordIncompleteDuration(completedWork);
     }
 
     if (next !== null) {
@@ -2909,7 +2910,7 @@ function unwindUnitOfWork(unitOfWork: Fiber, skipSiblings: boolean): void {
 
     if (enableProfilerTimer && (incompleteWork.mode & ProfileMode) !== NoMode) {
       // Record the render duration for the fiber that errored.
-      stopProfilerTimerIfRunningAndRecordDelta(incompleteWork, false);
+      stopProfilerTimerIfRunningAndRecordIncompleteDuration(incompleteWork);
 
       // Include the time spent working on failed children before continuing.
       let actualDuration = incompleteWork.actualDuration;

packages/react-reconciler/src/ReactProfilerTimer.js

@@ -29,7 +29,8 @@ export type ProfilerTimer = {
   recordCommitTime(): void,
   startProfilerTimer(fiber: Fiber): void,
   stopProfilerTimerIfRunning(fiber: Fiber): void,
-  stopProfilerTimerIfRunningAndRecordDelta(fiber: Fiber): void,
+  stopProfilerTimerIfRunningAndRecordDuration(fiber: Fiber): void,
+  stopProfilerTimerIfRunningAndRecordIncompleteDuration(fiber: Fiber): void,
   syncNestedUpdateFlag(): void,
   ...
 };
@@ -112,9 +113,21 @@ function stopProfilerTimerIfRunning(fiber: Fiber): void {
   profilerStartTime = -1;
 }
 
-function stopProfilerTimerIfRunningAndRecordDelta(
+function stopProfilerTimerIfRunningAndRecordDuration(fiber: Fiber): void {
+  if (!enableProfilerTimer) {
+    return;
+  }
+
+  if (profilerStartTime >= 0) {
+    const elapsedTime = now() - profilerStartTime;
+    fiber.actualDuration += elapsedTime;
+    fiber.selfBaseDuration = elapsedTime;
+    profilerStartTime = -1;
+  }
+}
+
+function stopProfilerTimerIfRunningAndRecordIncompleteDuration(
   fiber: Fiber,
-  overrideBaseTime: boolean,
 ): void {
   if (!enableProfilerTimer) {
     return;
@@ -123,9 +136,7 @@ function stopProfilerTimerIfRunningAndRecordDelta(
   if (profilerStartTime >= 0) {
     const elapsedTime = now() - profilerStartTime;
     fiber.actualDuration += elapsedTime;
-    if (overrideBaseTime) {
-      fiber.selfBaseDuration = elapsedTime;
-    }
+    // We don't update the selfBaseDuration here because we errored.
     profilerStartTime = -1;
   }
 }
@@ -233,7 +244,8 @@ export {
   startPassiveEffectTimer,
   startProfilerTimer,
   stopProfilerTimerIfRunning,
-  stopProfilerTimerIfRunningAndRecordDelta,
+  stopProfilerTimerIfRunningAndRecordDuration,
+  stopProfilerTimerIfRunningAndRecordIncompleteDuration,
   syncNestedUpdateFlag,
   transferActualDuration,
 };