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[tor-commits] [tor-browser] 244/311: Backed out changeset 77b0b0003ca0 (bug 1661293) for causing Bug 1758370



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pierov pushed a commit to branch geckoview-99.0.1-11.0-1
in repository tor-browser.

commit 2d36d04f26c6e057d982303db49eb0f6d8b132f7
Author: donal meehan <dmeehan@xxxxxxxxxxx>
AuthorDate: Wed Mar 23 17:24:15 2022 -0400

    Backed out changeset 77b0b0003ca0 (bug 1661293) for causing Bug 1758370
---
 dom/base/CCGCScheduler.cpp   | 16 +---------------
 dom/base/CCGCScheduler.h     | 30 +-----------------------------
 dom/base/nsJSEnvironment.cpp |  5 -----
 3 files changed, 2 insertions(+), 49 deletions(-)

diff --git a/dom/base/CCGCScheduler.cpp b/dom/base/CCGCScheduler.cpp
index f361be97baa44..efa5c77720beb 100644
--- a/dom/base/CCGCScheduler.cpp
+++ b/dom/base/CCGCScheduler.cpp
@@ -135,7 +135,6 @@ void CCGCScheduler::NoteGCBegin(JS::GCReason aReason) {
 void CCGCScheduler::NoteGCEnd() {
   mMajorGCReason = JS::GCReason::NO_REASON;
   mEagerMajorGCReason = JS::GCReason::NO_REASON;
-  mEagerMinorGCReason = JS::GCReason::NO_REASON;
 
   mInIncrementalGC = false;
   mCCBlockStart = TimeStamp();
@@ -230,11 +229,6 @@ bool CCGCScheduler::GCRunnerFired(TimeStamp aDeadline) {
       KillGCRunner();
       return false;
 
-    case GCRunnerAction::MinorGC:
-      JS::RunIdleTimeGCTask(CycleCollectedJSRuntime::Get()->Runtime());
-      NoteMinorGCEnd();
-      return HasMoreIdleGCRunnerWork();
-
     case GCRunnerAction::WaitToMajorGC: {
       MOZ_ASSERT(!mHaveAskedParent, "GCRunner alive after asking the parent");
       RefPtr<CCGCScheduler::MayGCPromise> mbPromise =
@@ -475,7 +469,7 @@ void CCGCScheduler::PokeGC(JS::GCReason aReason, JSObject* aObj,
   }
 
   if (mGCRunner || mHaveAskedParent) {
-    // There's already a GC runner, or there will be, so just return.
+    // There's already a GC runner, there or will be, so just return.
     return;
   }
 
@@ -805,10 +799,6 @@ CCRunnerStep CCGCScheduler::AdvanceCCRunner(TimeStamp aDeadline, TimeStamp aNow,
     return {CCRunnerAction::StopRunning, Yield};
   }
 
-  if (mEagerMinorGCReason != JS::GCReason::NO_REASON && !aDeadline.IsNull()) {
-    return {CCRunnerAction::MinorGC, Continue};
-  }
-
   switch (mCCRunnerState) {
       // ReducePurple: a GC ran (or we otherwise decided to try CC'ing). Wait
       // for some amount of time (kCCDelay, or less if incremental GC blocked
@@ -923,10 +913,6 @@ GCRunnerStep CCGCScheduler::GetNextGCRunnerAction(TimeStamp aDeadline) const {
                                : GCRunnerAction::WaitToMajorGC,
               mEagerMajorGCReason};
     }
-
-    if (mEagerMinorGCReason != JS::GCReason::NO_REASON) {
-      return {GCRunnerAction::MinorGC, mEagerMinorGCReason};
-    }
   }
 
   return {GCRunnerAction::None, JS::GCReason::NO_REASON};
diff --git a/dom/base/CCGCScheduler.h b/dom/base/CCGCScheduler.h
index cf9c2c90aee20..466e5ace9977d 100644
--- a/dom/base/CCGCScheduler.h
+++ b/dom/base/CCGCScheduler.h
@@ -63,7 +63,6 @@ static const uint32_t kCCPurpleLimit = 200;
 
 // Actions performed by the GCRunner state machine.
 enum class GCRunnerAction {
-  MinorGC,        // Run a minor GC (nursery collection)
   WaitToMajorGC,  // We want to start a new major GC
   StartMajorGC,   // The parent says we may begin our major GC
   GCSlice,        // Run a single slice of a major GC
@@ -75,24 +74,12 @@ struct GCRunnerStep {
   JS::GCReason mReason;
 };
 
-// Actions that are output from the CCRunner state machine.
 enum class CCRunnerAction {
-  // Do nothing.
   None,
-
-  // We crossed an eager minor GC threshold in the middle of an incremental CC,
-  // and we have some idle time.
-  MinorGC,
-
-  // Various cleanup actions.
   ForgetSkippable,
   CleanupContentUnbinder,
   CleanupDeferred,
-
-  // Do the actual cycle collection (build the graph etc).
   CycleCollect,
-
-  // All done.
   StopRunning
 };
 
@@ -104,7 +91,7 @@ enum CCRunnerForgetSkippableRemoveChildless {
 };
 
 struct CCRunnerStep {
-  // The action the scheduler is instructing the caller to perform.
+  // The action to scheduler is instructing the caller to perform.
   CCRunnerAction mAction;
 
   // Whether to stop processing actions for this invocation of the timer
@@ -228,12 +215,6 @@ class CCGCScheduler {
     }
   }
 
-  void SetWantEagerMinorGC(JS::GCReason aReason) {
-    if (mEagerMinorGCReason == JS::GCReason::NO_REASON) {
-      mEagerMinorGCReason = aReason;
-    }
-  }
-
   // Ensure that the current runner does a cycle collection, and trigger a GC
   // after it finishes.
   void EnsureCCThenGC(CCReason aReason) {
@@ -262,8 +243,6 @@ class CCGCScheduler {
   // A timer fired, but then decided not to run a GC.
   void NoteWontGC();
 
-  void NoteMinorGCEnd() { mEagerMinorGCReason = JS::GCReason::NO_REASON; }
-
   // This is invoked when we reach the actual cycle collection portion of the
   // overall cycle collection.
   void NoteCCBegin(CCReason aReason, TimeStamp aWhen);
@@ -445,12 +424,6 @@ class CCGCScheduler {
     mCCReason = CCReason::NO_REASON;
   }
 
-  bool HasMoreIdleGCRunnerWork() const {
-    return mMajorGCReason != JS::GCReason::NO_REASON ||
-           mEagerMajorGCReason != JS::GCReason::NO_REASON ||
-           mEagerMinorGCReason != JS::GCReason::NO_REASON;
-  }
-
   GCRunnerStep GetNextGCRunnerAction(TimeStamp aDeadline) const;
 
   CCRunnerStep AdvanceCCRunner(TimeStamp aDeadline, TimeStamp aNow,
@@ -524,7 +497,6 @@ class CCGCScheduler {
   mozilla::CCReason mCCReason = mozilla::CCReason::NO_REASON;
   JS::GCReason mMajorGCReason = JS::GCReason::NO_REASON;
   JS::GCReason mEagerMajorGCReason = JS::GCReason::NO_REASON;
-  JS::GCReason mEagerMinorGCReason = JS::GCReason::NO_REASON;
 
   bool mIsCompactingOnUserInactive = false;
   bool mIsCollectingCycles = false;
diff --git a/dom/base/nsJSEnvironment.cpp b/dom/base/nsJSEnvironment.cpp
index 3af7d18feac13..eed3705ab33d8 100644
--- a/dom/base/nsJSEnvironment.cpp
+++ b/dom/base/nsJSEnvironment.cpp
@@ -1547,11 +1547,6 @@ bool CCGCScheduler::CCRunnerFired(TimeStamp aDeadline) {
       case CCRunnerAction::None:
         break;
 
-      case CCRunnerAction::MinorGC:
-        JS::RunIdleTimeGCTask(CycleCollectedJSRuntime::Get()->Runtime());
-        sScheduler.NoteMinorGCEnd();
-        break;
-
       case CCRunnerAction::ForgetSkippable:
         // 'Forget skippable' only, then end this invocation.
         FireForgetSkippable(bool(step.mRemoveChildless), aDeadline);

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