folly::Arena< Alloc >::Block Struct Reference

Public Member Functions
void	deallocate (Alloc &alloc)
char *	start ()

Static Public Member Functions
static std::pair< Block *, size_t >	allocate (Alloc &alloc, size_t size, bool allowSlack)

Public Attributes
BlockLink	link

Private Member Functions
	Block ()=default
	~Block ()=default

Detailed Description

template<class Alloc>
struct folly::Arena< Alloc >::Block

Definition at line 132 of file Arena.h.

Constructor & Destructor Documentation

template<class Alloc>

folly::Arena< Alloc >::Block::Block ( )

privatedefault

Referenced by folly::Arena< Alloc >::Block::allocate(), and folly::Arena< Alloc >::allocateSlow().

template<class Alloc>

folly::Arena< Alloc >::Block::~Block ( )

privatedefault

Referenced by folly::Arena< Alloc >::Block::deallocate().

Member Function Documentation

template<class Alloc>

std::pair< typename Arena< Alloc >::Block *, size_t > folly::Arena< Alloc >::Block::allocate ( Alloc &  alloc, size_t  size, bool  allowSlack  )

static

Definition at line 27 of file Arena-inl.h.

References folly::Arena< Alloc >::Block::Block(), and folly::ArenaAllocatorTraits< Alloc >::goodSize().

Referenced by folly::Arena< Alloc >::allocateSlow().

                                                                      {
  size_t allocSize = sizeof(Block) + size;
  if (allowSlack) {
    allocSize = ArenaAllocatorTraits<Alloc>::goodSize(alloc, allocSize);
  }

  void* mem = std::allocator_traits<Alloc>::allocate(alloc, allocSize);
  return std::make_pair(new (mem) Block(), allocSize - sizeof(Block));
}

template<class Alloc>

void folly::Arena< Alloc >::Block::deallocate

(

Alloc &

alloc

)

Definition at line 38 of file Arena-inl.h.

References folly::Arena< Alloc >::Block::~Block().

                                               {
  this->~Block();
  std::allocator_traits<Alloc>::deallocate(alloc, this, 1);
}

template<class Alloc>

char* folly::Arena< Alloc >::Block::start ( )

inline

Definition at line 143 of file Arena.h.

Referenced by folly::Arena< Alloc >::allocateSlow().

                  {
      return reinterpret_cast<char*>(this + 1);
    }

Member Data Documentation

template<class Alloc>

BlockLink folly::Arena< Alloc >::Block::link

Definition at line 133 of file Arena.h.

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

• proxygen/folly/folly/memory/Arena.h
• proxygen/folly/folly/memory/Arena-inl.h