[Fiber] Log the Render/Commit phases and the gaps in between (#31016)

A slight behavior change here too is that I now mark the start of the
commit phase before the BeforeMutationEffect phase. This affects
`<Profiler>` too.

The named sequences are as follows:

Render -> Suspended or Throttled -> Commit -> Waiting for Paint ->
Remaining Effects

The Suspended phase is only logged if we delay the Commit due to CSS /
images.

The Throttled phase is only logged if we delay the commit due to the
Suspense throttling timer.

<img width="1246" alt="Screenshot 2024-09-20 at 9 14 23 PM"
src="https://github.com/user-attachments/assets/8d01f444-bb85-472b-9b42-6157d92c81b4">

I don't yet log render phases that don't complete. I think I also need
to special case renders that or don't commit after being suspended.

packages/react-reconciler/src/ReactFiberCommitEffects.js

@@ -899,7 +899,7 @@ function safelyCallDestroy(
 function commitProfiler(
   finishedWork: Fiber,
   current: Fiber | null,
-  commitTime: number,
+  commitStartTime: number,
   effectDuration: number,
 ) {
   const {id, onCommit, onRender} = finishedWork.memoizedProps;
@@ -918,7 +918,7 @@ function commitProfiler(
       finishedWork.actualDuration,
       finishedWork.treeBaseDuration,
       finishedWork.actualStartTime,
-      commitTime,
+      commitStartTime,
     );
   }
 
@@ -928,7 +928,7 @@ function commitProfiler(
         finishedWork.memoizedProps.id,
         phase,
         effectDuration,
-        commitTime,
+        commitStartTime,
       );
     }
   }
@@ -937,7 +937,7 @@ function commitProfiler(
 export function commitProfilerUpdate(
   finishedWork: Fiber,
   current: Fiber | null,
-  commitTime: number,
+  commitStartTime: number,
   effectDuration: number,
 ) {
   if (enableProfilerTimer) {
@@ -948,11 +948,11 @@ export function commitProfilerUpdate(
           commitProfiler,
           finishedWork,
           current,
-          commitTime,
+          commitStartTime,
           effectDuration,
         );
       } else {
-        commitProfiler(finishedWork, current, commitTime, effectDuration);
+        commitProfiler(finishedWork, current, commitStartTime, effectDuration);
       }
     } catch (error) {
       captureCommitPhaseError(finishedWork, finishedWork.return, error);
@@ -963,7 +963,7 @@ export function commitProfilerUpdate(
 function commitProfilerPostCommitImpl(
   finishedWork: Fiber,
   current: Fiber | null,
-  commitTime: number,
+  commitStartTime: number,
   passiveEffectDuration: number,
 ): void {
   const {id, onPostCommit} = finishedWork.memoizedProps;
@@ -976,14 +976,14 @@ function commitProfilerPostCommitImpl(
   }
 
   if (typeof onPostCommit === 'function') {
-    onPostCommit(id, phase, passiveEffectDuration, commitTime);
+    onPostCommit(id, phase, passiveEffectDuration, commitStartTime);
   }
 }
 
 export function commitProfilerPostCommit(
   finishedWork: Fiber,
   current: Fiber | null,
-  commitTime: number,
+  commitStartTime: number,
   passiveEffectDuration: number,
 ) {
   try {
@@ -993,14 +993,14 @@ export function commitProfilerPostCommit(
         commitProfilerPostCommitImpl,
         finishedWork,
         current,
-        commitTime,
+        commitStartTime,
         passiveEffectDuration,
       );
     } else {
       commitProfilerPostCommitImpl(
         finishedWork,
         current,
-        commitTime,
+        commitStartTime,
         passiveEffectDuration,
       );
     }

packages/react-reconciler/src/ReactFiberCommitWork.js

@@ -99,8 +99,7 @@ import {
   Cloned,
 } from './ReactFiberFlags';
 import {
-  commitTime,
-  completeTime,
+  commitStartTime,
   pushNestedEffectDurations,
   popNestedEffectDurations,
   bubbleNestedEffectDurations,
@@ -505,7 +504,7 @@ function commitLayoutEffectOnFiber(
         commitProfilerUpdate(
           finishedWork,
           current,
-          commitTime,
+          commitStartTime,
           profilerInstance.effectDuration,
         );
       } else {
@@ -2345,7 +2344,7 @@ export function reappearLayoutEffects(
         commitProfilerUpdate(
           finishedWork,
           current,
-          commitTime,
+          commitStartTime,
           profilerInstance.effectDuration,
         );
       } else {
@@ -2568,6 +2567,7 @@ export function commitPassiveMountEffects(
   finishedWork: Fiber,
   committedLanes: Lanes,
   committedTransitions: Array<Transition> | null,
+  renderEndTime: number, // Profiling-only
 ): void {
   resetComponentEffectTimers();
 
@@ -2576,7 +2576,7 @@ export function commitPassiveMountEffects(
     finishedWork,
     committedLanes,
     committedTransitions,
-    enableProfilerTimer && enableComponentPerformanceTrack ? completeTime : 0,
+    enableProfilerTimer && enableComponentPerformanceTrack ? renderEndTime : 0,
   );
 }
 
@@ -2763,7 +2763,7 @@ function commitPassiveMountOnFiber(
           finishedWork.alternate,
           // This value will still reflect the previous commit phase.
           // It does not get reset until the start of the next commit phase.
-          commitTime,
+          commitStartTime,
           profilerInstance.passiveEffectDuration,
         );
       } else {

packages/react-reconciler/src/ReactFiberPerformanceTrack.js

@@ -164,3 +164,68 @@ export function logTransitionStart(
     }
   }
 }
+
+export function logRenderPhase(startTime: number, endTime: number): void {
+  if (supportsUserTiming) {
+    reusableComponentDevToolDetails.color = 'primary-dark';
+    reusableComponentOptions.start = startTime;
+    reusableComponentOptions.end = endTime;
+    performance.measure('Render', reusableComponentOptions);
+  }
+}
+
+export function logSuspenseThrottlePhase(
+  startTime: number,
+  endTime: number,
+): void {
+  // This was inside a throttled Suspense boundary commit.
+  if (supportsUserTiming) {
+    reusableComponentDevToolDetails.color = 'secondary-light';
+    reusableComponentOptions.start = startTime;
+    reusableComponentOptions.end = endTime;
+    performance.measure('Throttled', reusableComponentOptions);
+  }
+}
+
+export function logSuspendedCommitPhase(
+  startTime: number,
+  endTime: number,
+): void {
+  // This means the commit was suspended on CSS or images.
+  if (supportsUserTiming) {
+    reusableComponentDevToolDetails.color = 'secondary-light';
+    reusableComponentOptions.start = startTime;
+    reusableComponentOptions.end = endTime;
+    performance.measure('Suspended', reusableComponentOptions);
+  }
+}
+
+export function logCommitPhase(startTime: number, endTime: number): void {
+  if (supportsUserTiming) {
+    reusableComponentDevToolDetails.color = 'secondary-dark';
+    reusableComponentOptions.start = startTime;
+    reusableComponentOptions.end = endTime;
+    performance.measure('Commit', reusableComponentOptions);
+  }
+}
+
+export function logPaintYieldPhase(startTime: number, endTime: number): void {
+  if (supportsUserTiming) {
+    reusableComponentDevToolDetails.color = 'secondary-light';
+    reusableComponentOptions.start = startTime;
+    reusableComponentOptions.end = endTime;
+    performance.measure('Waiting for Paint', reusableComponentOptions);
+  }
+}
+
+export function logPassiveCommitPhase(
+  startTime: number,
+  endTime: number,
+): void {
+  if (supportsUserTiming) {
+    reusableComponentDevToolDetails.color = 'secondary-dark';
+    reusableComponentOptions.start = startTime;
+    reusableComponentOptions.end = endTime;
+    performance.measure('Remaining Effects', reusableComponentOptions);
+  }
+}