cleanup: Fix some typos

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

Bug: v8:12425
Change-Id: I75b4b244e6fa259a29f6cf28bd8258b035af4be6
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3673536
Reviewed-by: Dominik Inführ <dinfuehr@chromium.org>
Commit-Queue: Nikolaos Papaspyrou <nikolaos@chromium.org>
Cr-Commit-Position: refs/heads/main@{#80808}

src/heap/embedder-tracing.h

@@ -88,7 +88,7 @@ class V8_EXPORT_PRIVATE LocalEmbedderHeapTracer final {
 
   ~LocalEmbedderHeapTracer() {
     if (remote_tracer_) remote_tracer_->v8_isolate_ = nullptr;
-    // CppHeap is not detached from Isolate here. Detaching is done explciitly
+    // CppHeap is not detached from Isolate here. Detaching is done explicitly
     // on Isolate/Heap/CppHeap destruction.
   }
 

src/heap/factory-base.cc

@@ -977,7 +977,7 @@ HeapObject FactoryBase<Impl>::AllocateRawWithImmortalMap(
     AllocationAlignment alignment) {
   // TODO(delphick): Potentially you could also pass a immortal immovable Map
   // from MAP_SPACE here, like external_map or message_object_map, but currently
-  // noone does so this check is sufficient.
+  // no one does so this check is sufficient.
   DCHECK(ReadOnlyHeap::Contains(map));
   HeapObject result = AllocateRaw(size, allocation, alignment);
   DisallowGarbageCollection no_gc;

src/heap/factory-base.h

@@ -194,7 +194,7 @@ class EXPORT_TEMPLATE_DECLARE(V8_EXPORT_PRIVATE) FactoryBase
                                           int32_t end_position,
                                           Handle<PreparseData>);
 
-  // Allocates a FeedbackMedata object and zeroes the data section.
+  // Allocates a FeedbackMetadata object and zeroes the data section.
   Handle<FeedbackMetadata> NewFeedbackMetadata(
       int slot_count, int create_closure_slot_count,
       AllocationType allocation = AllocationType::kOld);

src/heap/factory.h

@@ -310,7 +310,7 @@ class V8_EXPORT_PRIVATE Factory : public FactoryBase<Factory> {
   // A table is used for Latin1 codes.
   Handle<String> LookupSingleCharacterStringFromCode(uint16_t code);
 
-  // Create or lookup a single characters tring made up of a utf16 surrogate
+  // Create or lookup a single character string made up of a utf16 surrogate
   // pair.
   Handle<String> NewSurrogatePairString(uint16_t lead, uint16_t trail);
 

src/heap/free-list.h

@@ -138,7 +138,7 @@ class FreeList {
   // and the size should be a non-zero multiple of the word size.
   virtual size_t Free(Address start, size_t size_in_bytes, FreeMode mode);
 
-  // Allocates a free space node frome the free list of at least size_in_bytes
+  // Allocates a free space node from the free list of at least size_in_bytes
   // bytes. Returns the actual node size in node_size which can be bigger than
   // size_in_bytes. This method returns null if the allocation request cannot be
   // handled by the free list.
@@ -473,7 +473,7 @@ class V8_EXPORT_PRIVATE FreeListManyCachedFastPath : public FreeListManyCached {
 };
 
 // Uses FreeListManyCached if in the GC; FreeListManyCachedFastPath otherwise.
-// The reasonning behind this FreeList is the following: the GC runs in
+// The reasoning behind this FreeList is the following: the GC runs in
 // parallel, and therefore, more expensive allocations there are less
 // noticeable. On the other hand, the generated code and runtime need to be very
 // fast. Therefore, the strategy for the former is one that is not very

src/heap/heap-write-barrier.cc

@@ -93,7 +93,7 @@ int WriteBarrier::MarkingFromCode(Address raw_host, Address raw_slot) {
   }
 #endif
   WriteBarrier::Marking(host, slot, MaybeObject(value));
-  // Called by WriteBarrierCodeStubAssembler, which doesnt accept void type
+  // Called by WriteBarrierCodeStubAssembler, which doesn't accept void type
   return 0;
 }
 

src/heap/heap.cc

@@ -3772,7 +3772,7 @@ bool Heap::HasHighFragmentation() {
 bool Heap::HasHighFragmentation(size_t used, size_t committed) {
   const size_t kSlack = 16 * MB;
   // Fragmentation is high if committed > 2 * used + kSlack.
-  // Rewrite the exression to avoid overflow.
+  // Rewrite the expression to avoid overflow.
   DCHECK_GE(committed, used);
   return committed - used > used + kSlack;
 }

test/cctest/test-debug.cc

@@ -4743,33 +4743,33 @@ TEST(SourceInfo) {
     }
   }
 
-  // Test first positon.
+  // Test first position.
   CHECK_EQ(script->GetSourceLocation(0).GetLineNumber(), 0);
   CHECK_EQ(script->GetSourceLocation(0).GetColumnNumber(), 0);
 
-  // Test second positon.
+  // Test second position.
   CHECK_EQ(script->GetSourceLocation(1).GetLineNumber(), 0);
   CHECK_EQ(script->GetSourceLocation(1).GetColumnNumber(), 1);
 
-  // Test first positin in function a().
+  // Test first position in function a().
   const int start_a =
       static_cast<int>(strstr(source, "function a") - source) + 10;
   CHECK_EQ(script->GetSourceLocation(start_a).GetLineNumber(), 1);
   CHECK_EQ(script->GetSourceLocation(start_a).GetColumnNumber(), 10);
 
-  // Test first positin in function b().
+  // Test first position in function b().
   const int start_b =
       static_cast<int>(strstr(source, "function    b") - source) + 13;
   CHECK_EQ(script->GetSourceLocation(start_b).GetLineNumber(), 2);
   CHECK_EQ(script->GetSourceLocation(start_b).GetColumnNumber(), 13);
 
-  // Test first positin in function c().
+  // Test first position in function c().
   const int start_c =
       static_cast<int>(strstr(source, "function c") - source) + 10;
   CHECK_EQ(script->GetSourceLocation(start_c).GetLineNumber(), 5);
   CHECK_EQ(script->GetSourceLocation(start_c).GetColumnNumber(), 12);
 
-  // Test first positin in function d().
+  // Test first position in function d().
   const int start_d =
       static_cast<int>(strstr(source, "function d") - source) + 10;
   CHECK_EQ(script->GetSourceLocation(start_d).GetLineNumber(), 12);
@@ -5561,7 +5561,7 @@ TEST(TerminateOnResumeAtUnhandledRejectionCppImpl) {
   auto data = std::make_pair(isolate, &env);
   v8::debug::SetDebugDelegate(env->GetIsolate(), &delegate);
   {
-    // We want to trigger a breapoint upon Promise rejection, but we will only
+    // We want to trigger a breakpoint upon Promise rejection, but we will only
     // get the callback if there is at least one JavaScript frame in the stack.
     v8::Local<v8::Function> func =
         v8::Function::New(env.local(), RejectPromiseThroughCpp,