folly::fibers::Fiber::LocalData Class Reference

Public Member Functions
	LocalData ()
	~LocalData ()
	LocalData (const LocalData &other)
LocalData &	operator= (const LocalData &other)
template<typename T >
T &	get ()
void	reset ()
template<typename T >
FOLLY_NOINLINE T &	getSlow ()
template<typename T >
T &	getSlow ()

Static Public Member Functions
static void *	allocateHeapBuffer (size_t size)
static void	freeHeapBuffer (void *buffer)
template<typename T >
static void	dataCopyConstructor (void *, const void *)
template<typename T >
static void	dataBufferDestructor (void *)
template<typename T >
static void	dataHeapDestructor (void *)

Public Attributes
std::aligned_storage< kBufferSize >::type	buffer_
size_t	dataSize_
const std::type_info *	dataType_
void(*	dataDestructor_ )(void *)
void(*	dataCopyConstructor_ )(void *, const void *)
void *	data_ {nullptr}

Static Public Attributes
static constexpr size_t	kBufferSize = 128

Detailed Description

Definition at line 131 of file Fiber.h.

Constructor & Destructor Documentation

folly::fibers::Fiber::LocalData::LocalData ( )

inline

Definition at line 133 of file Fiber.h.

References operator=(), and ~LocalData().

{}

folly::fibers::Fiber::LocalData::~LocalData

(

)

Definition at line 197 of file Fiber.cpp.

Referenced by LocalData().

                           {
  reset();
}

folly::fibers::Fiber::LocalData::LocalData

(

const LocalData &

other

)

Definition at line 201 of file Fiber.cpp.

                                                : data_(nullptr) {
  *this = other;
}

Member Function Documentation

void * folly::fibers::Fiber::LocalData::allocateHeapBuffer ( size_t  size )

static

Definition at line 236 of file Fiber.cpp.

References folly::size().

Referenced by get(), and operator=().

                                                    {
  return new char[size];
}

template<typename T >

void folly::fibers::Fiber::LocalData::dataBufferDestructor ( void *  ptr )

static

Definition at line 66 of file Fiber-inl.h.

References ptr, and folly::T.

Referenced by get().

                                                   {
  reinterpret_cast<T*>(ptr)->~T();
}

template<typename T >

void folly::fibers::Fiber::LocalData::dataCopyConstructor ( void *  ptr, const void *  other  )

static

Definition at line 61 of file Fiber-inl.h.

References ptr, and folly::T.

Referenced by get().

                                                                     {
  new (reinterpret_cast<T*>(ptr)) T(*reinterpret_cast<const T*>(other));
}

template<typename T >

void folly::fibers::Fiber::LocalData::dataHeapDestructor ( void *  ptr )

static

Definition at line 71 of file Fiber-inl.h.

References ptr, and folly::T.

Referenced by get().

                                                 {
  reinterpret_cast<T*>(ptr)->~T();
  freeHeapBuffer(ptr);
}

void folly::fibers::Fiber::LocalData::freeHeapBuffer ( void *  buffer )

static

Definition at line 240 of file Fiber.cpp.

References buffer().

Referenced by get().

                                                {
  delete[] reinterpret_cast<char*>(buffer);
}

template<typename T >

T& folly::fibers::Fiber::LocalData::get ( )

inline

Definition at line 139 of file Fiber.h.

References allocateHeapBuffer(), buffer(), data_, dataBufferDestructor(), dataCopyConstructor(), dataHeapDestructor(), dataType_, FOLLY_NOINLINE, freeHeapBuffer(), getSlow(), reset(), folly::size(), and folly::T.

Referenced by folly::fibers::FiberManager::local().

             {
      if (data_) {
        assert(*dataType_ == typeid(T));
        return *reinterpret_cast<T*>(data_);
      }
      return getSlow<T>();
    }

template<typename T >

T& folly::fibers::Fiber::LocalData::getSlow

(

)

Definition at line 43 of file Fiber-inl.h.

References buffer_, data_, kBufferSize, and folly::T.

                           {
  dataSize_ = sizeof(T);
  dataType_ = &typeid(T);
  if (sizeof(T) <= kBufferSize) {
    dataDestructor_ = dataBufferDestructor<T>;
    data_ = &buffer_;
  } else {
    dataDestructor_ = dataHeapDestructor<T>;
    data_ = allocateHeapBuffer(dataSize_);
  }
  dataCopyConstructor_ = dataCopyConstructor<T>;

  new (reinterpret_cast<T*>(data_)) T();

  return *reinterpret_cast<T*>(data_);
}

template<typename T >

FOLLY_NOINLINE T& folly::fibers::Fiber::LocalData::getSlow

(

)

Referenced by get().

Fiber::LocalData & folly::fibers::Fiber::LocalData::operator=

(

const LocalData &

other

)

Definition at line 205 of file Fiber.cpp.

References allocateHeapBuffer(), buffer_, data_, dataCopyConstructor_, dataDestructor_, dataSize_, dataType_, kBufferSize, and reset().

Referenced by LocalData().

                                                                {
  reset();
  if (!other.data_) {
    return *this;
  }

  dataSize_ = other.dataSize_;
  dataType_ = other.dataType_;
  dataDestructor_ = other.dataDestructor_;
  dataCopyConstructor_ = other.dataCopyConstructor_;

  if (dataSize_ <= kBufferSize) {
    data_ = &buffer_;
  } else {
    data_ = allocateHeapBuffer(dataSize_);
  }

  dataCopyConstructor_(data_, other.data_);

  return *this;
}

void folly::fibers::Fiber::LocalData::reset

(

)

Definition at line 227 of file Fiber.cpp.

References data_, and dataDestructor_.

Referenced by get(), operator=(), and folly::fibers::FiberManager::runReadyFiber().

                           {
  if (!data_) {
    return;
  }

  dataDestructor_(data_);
  data_ = nullptr;
}

Member Data Documentation

std::aligned_storage<kBufferSize>::type folly::fibers::Fiber::LocalData::buffer_

Definition at line 164 of file Fiber.h.

Referenced by operator=().

void* folly::fibers::Fiber::LocalData::data_ {nullptr}

Definition at line 170 of file Fiber.h.

Referenced by get(), operator=(), and reset().

void(* folly::fibers::Fiber::LocalData::dataCopyConstructor_) (void *, const void *)

Definition at line 169 of file Fiber.h.

Referenced by operator=().

void(* folly::fibers::Fiber::LocalData::dataDestructor_) (void *)

Definition at line 168 of file Fiber.h.

Referenced by operator=(), and reset().

size_t folly::fibers::Fiber::LocalData::dataSize_

Definition at line 165 of file Fiber.h.

Referenced by operator=().

const std::type_info* folly::fibers::Fiber::LocalData::dataType_

Definition at line 167 of file Fiber.h.

Referenced by get(), and operator=().

constexpr size_t folly::fibers::Fiber::LocalData::kBufferSize = 128

static

Definition at line 163 of file Fiber.h.

Referenced by operator=().

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

• proxygen/folly/folly/fibers/Fiber.h
• proxygen/folly/folly/fibers/Fiber-inl.h
• proxygen/folly/folly/fibers/Fiber.cpp