cleanup: Fix some typos

Mostly in comments, again, not much to be said...

Bug: v8:12425
Change-Id: I6d6c70b4e4dba70ec6ac7574caecc77b65316050
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3693698Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80977}

src/heap/incremental-marking.cc

@@ -579,7 +579,7 @@ double IncrementalMarking::CurrentTimeToMarkingTask() const {
 }
 
 void IncrementalMarking::MarkingComplete(CompletionAction action) {
-  // Allowed overshoot percantage of incremental marking walltime.
+  // Allowed overshoot percentage of incremental marking walltime.
   constexpr double kAllowedOvershoot = 0.1;
   // Minimum overshoot in ms. This is used to allow moving away from stack when
   // marking was fast.

src/heap/new-spaces.cc

@@ -717,7 +717,7 @@ bool SemiSpaceNewSpace::AddFreshPage() {
     return false;
   }
 
-  // We park unused allocation buffer space of allocations happenting from the
+  // We park unused allocation buffer space of allocations happening from the
   // mutator.
   if (FLAG_allocation_buffer_parking && heap()->gc_state() == Heap::NOT_IN_GC &&
       remaining_in_page >= kAllocationBufferParkingThreshold) {
@@ -741,7 +741,7 @@ bool SemiSpaceNewSpace::AddParkedAllocationBuffer(
     if (size_in_bytes + filler_size <= parked_size) {
       parked_allocation_buffers_.erase(it);
       Page* page = Page::FromAddress(start);
-      // We move a page with a parked allocaiton to the end of the pages list
+      // We move a page with a parked allocation to the end of the pages list
       // to maintain the invariant that the last page is the used one.
       to_space_.MovePageToTheEnd(page);
       UpdateLinearAllocationArea(start);

src/heap/new-spaces.h

@@ -89,7 +89,7 @@ class SemiSpace final : public Space {
 
   bool AdvancePage() {
     Page* next_page = current_page_->next_page();
-    // We cannot expand if we reached the target capcity. Note
+    // We cannot expand if we reached the target capacity. Note
     // that we need to account for the next page already for this check as we
     // could potentially fill the whole page after advancing.
     if (next_page == nullptr || (current_capacity_ == target_capacity_)) {

src/heap/object-stats.cc

@@ -921,7 +921,7 @@ void ObjectStatsCollectorImpl::RecordVirtualScriptDetails(Script script) {
   Object raw_source = script.source();
   if (raw_source.IsExternalString(cage_base())) {
     // The contents of external strings aren't on the heap, so we have to record
-    // them manually. The on-heap String object is recorded indepentendely in
+    // them manually. The on-heap String object is recorded independently in
     // the normal pass.
     ExternalString string = ExternalString::cast(raw_source);
     Address resource = string.resource_as_address();

src/heap/objects-visiting.h

@@ -105,7 +105,7 @@ class HeapVisitor : public ObjectVisitorWithCageBases {
   // Guard predicate for visiting the objects map pointer separately.
   V8_INLINE bool ShouldVisitMapPointer() { return true; }
   // If this predicate returns false, then the heap visitor will fail
-  // in default Visit implemention for subclasses of JSObject.
+  // in default Visit implementation for subclasses of JSObject.
   V8_INLINE bool AllowDefaultJSObjectVisit() { return true; }
 
 #define VISIT(TypeName) \

src/heap/promote-young-generation.cc

@@ -63,7 +63,7 @@ void PromoteYoungGenerationGC::EvacuateYoungGeneration() {
 
   // Fix up special trackers.
   heap_->external_string_table_.PromoteYoung();
-  // GlobalHandles are updated in PostGarbageCollectonProcessing
+  // GlobalHandles are updated in PostGarbageCollectionProcessing
 
   size_t promoted = heap_->new_space()->Size() + heap_->new_lo_space()->Size();
   heap_->IncrementYoungSurvivorsCounter(promoted);