Merged changes to avoid OOM for large wasm modules.

src/compiler/zone-stats.cc

 // Copyright 2014 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/compiler/zone-stats.h"
 
 namespace v8 {
 namespace internal {
 namespace compiler {
 
@@ skipping 50 matching lines @@
 }
 
 ZoneStats::ZoneStats(AccountingAllocator* allocator)
     : max_allocated_bytes_(0), total_deleted_bytes_(0), allocator_(allocator) {}
 
 ZoneStats::~ZoneStats() {
   DCHECK(zones_.empty());
   DCHECK(stats_.empty());
 }
 
-size_t ZoneStats::GetMaxAllocatedBytes() {
+size_t ZoneStats::GetMaxAllocatedBytes() const {
   return std::max(max_allocated_bytes_, GetCurrentAllocatedBytes());
 }
 
-size_t ZoneStats::GetCurrentAllocatedBytes() {
+size_t ZoneStats::GetCurrentAllocatedBytes() const {
   size_t total = 0;
   for (Zone* zone : zones_) {
     total += static_cast<size_t>(zone->allocation_size());
   }
   return total;
 }
 
-size_t ZoneStats::GetTotalAllocatedBytes() {
+size_t ZoneStats::GetTotalAllocatedBytes() const {
   return total_deleted_bytes_ + GetCurrentAllocatedBytes();
 }
 
 Zone* ZoneStats::NewEmptyZone(const char* zone_name) {
   Zone* zone = new Zone(allocator_, zone_name);
   zones_.push_back(zone);
   return zone;
 }
 
 void ZoneStats::ReturnZone(Zone* zone) {
   size_t current_total = GetCurrentAllocatedBytes();
   // Update max.
   max_allocated_bytes_ = std::max(max_allocated_bytes_, current_total);
   // Update stats.
   for (StatsScope* stat_scope : stats_) {
     stat_scope->ZoneReturned(zone);
   }
   // Remove from used.
   Zones::iterator it = std::find(zones_.begin(), zones_.end(), zone);
   DCHECK(it != zones_.end());
   zones_.erase(it);
   total_deleted_bytes_ += static_cast<size_t>(zone->allocation_size());
   delete zone;
 }
 
 }  // namespace compiler
 }  // namespace internal
 }  // namespace v8