Rename "NoBarrier" memory operations to "Relaxed".

src/zone/accounting-allocator.cc

 // Copyright 2016 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/zone/accounting-allocator.h"
 
 #include <cstdlib>
 
 #if V8_LIBC_BIONIC
 #include <malloc.h>  // NOLINT
@@ skipping 67 matching lines @@
     }
   }
 
   return result;
 }
 
 Segment* AccountingAllocator::AllocateSegment(size_t bytes) {
   void* memory = malloc(bytes);
   if (memory) {
     base::AtomicWord current =
-        base::NoBarrier_AtomicIncrement(&current_memory_usage_, bytes);
-    base::AtomicWord max = base::NoBarrier_Load(&max_memory_usage_);
+        base::Relaxed_AtomicIncrement(&current_memory_usage_, bytes);
+    base::AtomicWord max = base::Relaxed_Load(&max_memory_usage_);
     while (current > max) {
-      max = base::NoBarrier_CompareAndSwap(&max_memory_usage_, max, current);
+      max = base::Relaxed_CompareAndSwap(&max_memory_usage_, max, current);
     }
   }
   return reinterpret_cast<Segment*>(memory);
 }
 
 void AccountingAllocator::ReturnSegment(Segment* segment) {
   segment->ZapContents();
 
   if (memory_pressure_level_.Value() != MemoryPressureLevel::kNone) {
     FreeSegment(segment);
   } else if (!AddSegmentToPool(segment)) {
     FreeSegment(segment);
   }
 }
 
 void AccountingAllocator::FreeSegment(Segment* memory) {
-  base::NoBarrier_AtomicIncrement(
-      &current_memory_usage_, -static_cast<base::AtomicWord>(memory->size()));
+  base::Relaxed_AtomicIncrement(&current_memory_usage_,
+                                -static_cast<base::AtomicWord>(memory->size()));
   memory->ZapHeader();
   free(memory);
 }
 
 size_t AccountingAllocator::GetCurrentMemoryUsage() const {
-  return base::NoBarrier_Load(&current_memory_usage_);
+  return base::Relaxed_Load(&current_memory_usage_);
 }
 
 size_t AccountingAllocator::GetMaxMemoryUsage() const {
-  return base::NoBarrier_Load(&max_memory_usage_);
+  return base::Relaxed_Load(&max_memory_usage_);
 }
 
 size_t AccountingAllocator::GetCurrentPoolSize() const {
-  return base::NoBarrier_Load(&current_pool_size_);
+  return base::Relaxed_Load(&current_pool_size_);
 }
 
 Segment* AccountingAllocator::GetSegmentFromPool(size_t requested_size) {
   if (requested_size > (1 << kMaxSegmentSizePower)) {
     return nullptr;
   }
 
   size_t power = kMinSegmentSizePower;
   while (requested_size > (static_cast<size_t>(1) << power)) power++;
 
   DCHECK_GE(power, kMinSegmentSizePower + 0);
   power -= kMinSegmentSizePower;
 
   Segment* segment;
   {
     base::LockGuard<base::Mutex> lock_guard(&unused_segments_mutex_);
 
     segment = unused_segments_heads_[power];
 
     if (segment != nullptr) {
       unused_segments_heads_[power] = segment->next();
       segment->set_next(nullptr);
 
       unused_segments_sizes_[power]--;
-      base::NoBarrier_AtomicIncrement(
+      base::Relaxed_AtomicIncrement(
           &current_pool_size_, -static_cast<base::AtomicWord>(segment->size()));
     }
   }
 
   if (segment) {
     DCHECK_GE(segment->size(), requested_size);
   }
   return segment;
 }
 
@@ skipping 13 matching lines @@
 
   {
     base::LockGuard<base::Mutex> lock_guard(&unused_segments_mutex_);
 
     if (unused_segments_sizes_[power] >= unused_segments_max_sizes_[power]) {
       return false;
     }
 
     segment->set_next(unused_segments_heads_[power]);
     unused_segments_heads_[power] = segment;
-    base::NoBarrier_AtomicIncrement(&current_pool_size_, size);
+    base::Relaxed_AtomicIncrement(&current_pool_size_, size);
     unused_segments_sizes_[power]++;
   }
 
   return true;
 }
 
 void AccountingAllocator::ClearPool() {
   base::LockGuard<base::Mutex> lock_guard(&unused_segments_mutex_);
 
   for (size_t power = 0; power <= kMaxSegmentSizePower - kMinSegmentSizePower;
        power++) {
     Segment* current = unused_segments_heads_[power];
     while (current) {
       Segment* next = current->next();
       FreeSegment(current);
       current = next;
     }
     unused_segments_heads_[power] = nullptr;
   }
 }
 
 }  // namespace internal
 }  // namespace v8