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#include "memory_usage_tracker.h"
#include "leaky_ref_counted_singleton.h"
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
class TNulSimplelMemoryUsageTracker
: public ISimpleMemoryUsageTracker
{
public:
bool Acquire(i64 /*size*/) override
{
return false;
}
void Release(i64 /*size*/) override
{ }
TSharedRef Track(TSharedRef reference, bool /*keepExistingTracking*/) override
{
return reference;
}
};
////////////////////////////////////////////////////////////////////////////////
TSimpleMemoryUsageTrackerGuard::TSimpleMemoryUsageTrackerGuard(TSimpleMemoryUsageTrackerGuard&& other)
{
MoveFrom(std::move(other));
}
TSimpleMemoryUsageTrackerGuard::~TSimpleMemoryUsageTrackerGuard()
{
Release();
}
TSimpleMemoryUsageTrackerGuard& TSimpleMemoryUsageTrackerGuard::operator=(TSimpleMemoryUsageTrackerGuard&& other)
{
if (this != &other) {
Release();
MoveFrom(std::move(other));
}
return *this;
}
void TSimpleMemoryUsageTrackerGuard::MoveFrom(TSimpleMemoryUsageTrackerGuard&& other)
{
Tracker_ = other.Tracker_;
AcquiredSize_ = other.AcquiredSize_;
other.Tracker_ = nullptr;
other.AcquiredSize_ = 0;
}
TSimpleMemoryUsageTrackerGuard TSimpleMemoryUsageTrackerGuard::Build(ISimpleMemoryUsageTrackerPtr tracker)
{
if (!tracker) {
return {};
}
TSimpleMemoryUsageTrackerGuard guard;
guard.Tracker_ = tracker;
return guard;
}
void TSimpleMemoryUsageTrackerGuard::Release()
{
if (Tracker_) {
if (AcquiredSize_) {
Tracker_->Release(AcquiredSize_);
}
Tracker_.Reset();
AcquiredSize_ = 0;
}
}
void TSimpleMemoryUsageTrackerGuard::SetSize(i64 size)
{
if (!Tracker_) {
return;
}
YT_VERIFY(size >= 0);
if (size > AcquiredSize_) {
Tracker_->Acquire(size - AcquiredSize_);
} else if (size < AcquiredSize_) {
Tracker_->Release(AcquiredSize_ - size);
}
AcquiredSize_ = size;
}
////////////////////////////////////////////////////////////////////////////////
ISimpleMemoryUsageTrackerPtr GetNullSimpleMemoryUsageTracker()
{
return LeakyRefCountedSingleton<TNulSimplelMemoryUsageTracker>();
}
TSharedRef TrackMemory(
const ISimpleMemoryUsageTrackerPtr& tracker,
TSharedRef reference,
bool keepExistingTracking)
{
if (!tracker || !reference) {
return reference;
}
return tracker->Track(std::move(reference), keepExistingTracking);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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