CpuMgrArenaAllocator Class Reference

#include <CpuMgrArenaAllocator.h>

Inheritance diagram for CpuMgrArenaAllocator:

Collaboration diagram for CpuMgrArenaAllocator:

Public Member Functions
	CpuMgrArenaAllocator ()
	~CpuMgrArenaAllocator () override
void *	allocate (size_t num_bytes) override
void *	allocateAndZero (const size_t num_bytes) override
size_t	bytesUsed () const override
size_t	totalBytes () const override
MemoryType	getMemoryType () const override
Public Member Functions inherited from Arena
virtual	~Arena ()

Private Attributes
Data_Namespace::DataMgr &	data_mgr_
std::vector < Data_Namespace::AbstractBuffer * >	allocated_buffers_
size_t	size_

Additional Inherited Members
Public Types inherited from Arena
enum	MemoryType { MemoryType::DRAM, MemoryType::PMEM }

Detailed Description

Definition at line 31 of file CpuMgrArenaAllocator.h.

Constructor & Destructor Documentation

CpuMgrArenaAllocator::CpuMgrArenaAllocator

(

)

Definition at line 29 of file CpuMgrArenaAllocator.cpp.

    : data_mgr_(get_data_mgr_instance()), size_(0) {}

CpuMgrArenaAllocator::~CpuMgrArenaAllocator ( )

override

Definition at line 32 of file CpuMgrArenaAllocator.cpp.

References allocated_buffers_, data_mgr_, and Data_Namespace::DataMgr::free().

                                            {
  for (auto buffer : allocated_buffers_) {
    data_mgr_.free(buffer);
  }
}

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Member Function Documentation

void * CpuMgrArenaAllocator::allocate ( size_t  num_bytes )

overridevirtual

Implements Arena.

Definition at line 38 of file CpuMgrArenaAllocator.cpp.

References Data_Namespace::DataMgr::alloc(), allocated_buffers_, CHECK, Data_Namespace::CPU_LEVEL, data_mgr_, logger::ERROR, Data_Namespace::AbstractBuffer::getMemoryPtr(), LOG, and size_.

Referenced by allocateAndZero().

                                                     {
  if (num_bytes == 0) {
    return nullptr;
  }
  AbstractBuffer* buffer = nullptr;
  try {
    buffer = data_mgr_.alloc(Data_Namespace::CPU_LEVEL, 0, num_bytes);
  } catch (const OutOfMemory& e) {
    LOG(ERROR) << e.what();
    throw OutOfHostMemory(num_bytes);
  }
  CHECK(buffer);
  allocated_buffers_.emplace_back(buffer);

  auto mem_ptr = buffer->getMemoryPtr();
  CHECK(mem_ptr);
  size_ += num_bytes;
  return mem_ptr;
}

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void * CpuMgrArenaAllocator::allocateAndZero ( const size_t  num_bytes )

overridevirtual

Implements Arena.

Definition at line 58 of file CpuMgrArenaAllocator.cpp.

References allocate().

                                                                  {
  auto ret = allocate(num_bytes);
  std::memset(ret, 0, num_bytes);
  return ret;
}

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size_t CpuMgrArenaAllocator::bytesUsed ( ) const

overridevirtual

Implements Arena.

Definition at line 64 of file CpuMgrArenaAllocator.cpp.

References size_.

                                             {
  return size_;
}

Arena::MemoryType CpuMgrArenaAllocator::getMemoryType ( ) const

overridevirtual

Implements Arena.

Definition at line 72 of file CpuMgrArenaAllocator.cpp.

References Arena::DRAM.

                                                          {
  return Arena::MemoryType::DRAM;
}

size_t CpuMgrArenaAllocator::totalBytes ( ) const

overridevirtual

Implements Arena.

Definition at line 68 of file CpuMgrArenaAllocator.cpp.

References size_.

                                              {
  return size_;
}

Member Data Documentation

std::vector<Data_Namespace::AbstractBuffer*> CpuMgrArenaAllocator::allocated_buffers_

private

Definition at line 49 of file CpuMgrArenaAllocator.h.

Referenced by allocate(), and ~CpuMgrArenaAllocator().

Data_Namespace::DataMgr& CpuMgrArenaAllocator::data_mgr_

private

Definition at line 48 of file CpuMgrArenaAllocator.h.

Referenced by allocate(), and ~CpuMgrArenaAllocator().

size_t CpuMgrArenaAllocator::size_

private

Definition at line 50 of file CpuMgrArenaAllocator.h.

Referenced by allocate(), bytesUsed(), and totalBytes().

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The documentation for this class was generated from the following files:

• /home/jenkins-slave/workspace/core-os-doxygen/DataMgr/Allocators/CpuMgrArenaAllocator.h
• /home/jenkins-slave/workspace/core-os-doxygen/DataMgr/Allocators/CpuMgrArenaAllocator.cpp