// 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_STATS_H_
|
#define V8_COMPILER_ZONE_STATS_H_
|
|
#include <map>
|
#include <set>
|
#include <vector>
|
|
#include "src/globals.h"
|
#include "src/zone/zone.h"
|
|
namespace v8 {
|
namespace internal {
|
namespace compiler {
|
|
class V8_EXPORT_PRIVATE ZoneStats final {
|
public:
|
class Scope final {
|
public:
|
explicit Scope(ZoneStats* zone_stats, const char* zone_name)
|
: zone_name_(zone_name), zone_stats_(zone_stats), zone_(nullptr) {}
|
~Scope() { Destroy(); }
|
|
Zone* zone() {
|
if (zone_ == nullptr) zone_ = zone_stats_->NewEmptyZone(zone_name_);
|
return zone_;
|
}
|
void Destroy() {
|
if (zone_ != nullptr) zone_stats_->ReturnZone(zone_);
|
zone_ = nullptr;
|
}
|
|
private:
|
const char* zone_name_;
|
ZoneStats* const zone_stats_;
|
Zone* zone_;
|
DISALLOW_COPY_AND_ASSIGN(Scope);
|
};
|
|
class V8_EXPORT_PRIVATE StatsScope final {
|
public:
|
explicit StatsScope(ZoneStats* zone_stats);
|
~StatsScope();
|
|
size_t GetMaxAllocatedBytes();
|
size_t GetCurrentAllocatedBytes();
|
size_t GetTotalAllocatedBytes();
|
|
private:
|
friend class ZoneStats;
|
void ZoneReturned(Zone* zone);
|
|
typedef std::map<Zone*, size_t> InitialValues;
|
|
ZoneStats* const zone_stats_;
|
InitialValues initial_values_;
|
size_t total_allocated_bytes_at_start_;
|
size_t max_allocated_bytes_;
|
|
DISALLOW_COPY_AND_ASSIGN(StatsScope);
|
};
|
|
explicit ZoneStats(AccountingAllocator* allocator);
|
~ZoneStats();
|
|
size_t GetMaxAllocatedBytes() const;
|
size_t GetTotalAllocatedBytes() const;
|
size_t GetCurrentAllocatedBytes() const;
|
|
private:
|
Zone* NewEmptyZone(const char* zone_name);
|
void ReturnZone(Zone* zone);
|
|
static const size_t kMaxUnusedSize = 3;
|
typedef std::vector<Zone*> Zones;
|
typedef std::vector<StatsScope*> Stats;
|
|
Zones zones_;
|
Stats stats_;
|
size_t max_allocated_bytes_;
|
size_t total_deleted_bytes_;
|
AccountingAllocator* allocator_;
|
|
DISALLOW_COPY_AND_ASSIGN(ZoneStats);
|
};
|
|
} // namespace compiler
|
} // namespace internal
|
} // namespace v8
|
|
#endif // V8_COMPILER_ZONE_STATS_H_
|
