| // 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. |
| |
| #ifndef V8_COMPILER_ZONE_POOL_H_ |
| #define V8_COMPILER_ZONE_POOL_H_ |
| |
| #include <map> |
| #include <set> |
| #include <vector> |
| |
| #include "src/v8.h" |
| |
| namespace v8 { |
| namespace internal { |
| namespace compiler { |
| |
| class ZonePool FINAL { |
| public: |
| class Scope FINAL { |
| public: |
| explicit Scope(ZonePool* zone_pool) : zone_pool_(zone_pool), zone_(NULL) {} |
| ~Scope() { Destroy(); } |
| |
| Zone* zone() { |
| if (zone_ == NULL) zone_ = zone_pool_->NewEmptyZone(); |
| return zone_; |
| } |
| void Destroy() { |
| if (zone_ != NULL) zone_pool_->ReturnZone(zone_); |
| zone_ = NULL; |
| } |
| |
| private: |
| ZonePool* const zone_pool_; |
| Zone* zone_; |
| DISALLOW_COPY_AND_ASSIGN(Scope); |
| }; |
| |
| class StatsScope FINAL { |
| public: |
| explicit StatsScope(ZonePool* zone_pool); |
| ~StatsScope(); |
| |
| size_t GetMaxAllocatedBytes(); |
| size_t GetCurrentAllocatedBytes(); |
| size_t GetTotalAllocatedBytes(); |
| |
| private: |
| friend class ZonePool; |
| void ZoneReturned(Zone* zone); |
| |
| typedef std::map<Zone*, size_t> InitialValues; |
| |
| ZonePool* const zone_pool_; |
| InitialValues initial_values_; |
| size_t total_allocated_bytes_at_start_; |
| size_t max_allocated_bytes_; |
| |
| DISALLOW_COPY_AND_ASSIGN(StatsScope); |
| }; |
| |
| explicit ZonePool(Isolate* isolate); |
| ~ZonePool(); |
| |
| size_t GetMaxAllocatedBytes(); |
| size_t GetTotalAllocatedBytes(); |
| size_t GetCurrentAllocatedBytes(); |
| |
| private: |
| Zone* NewEmptyZone(); |
| void ReturnZone(Zone* zone); |
| |
| static const size_t kMaxUnusedSize = 3; |
| typedef std::vector<Zone*> Unused; |
| typedef std::vector<Zone*> Used; |
| typedef std::vector<StatsScope*> Stats; |
| |
| Isolate* const isolate_; |
| Unused unused_; |
| Used used_; |
| Stats stats_; |
| size_t max_allocated_bytes_; |
| size_t total_deleted_bytes_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ZonePool); |
| }; |
| |
| } // namespace compiler |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif |