folly::detail::ThreadCachedInts< Tag >::Integer Class Reference

Public Member Functions
constexpr	Integer (ThreadCachedInts *ints) noexcept
	~Integer () noexcept

Public Attributes
ThreadCachedInts *	ints_
std::atomic< int64_t >	inc_ [2]
std::atomic< int64_t >	dec_ [2]
Integer *&	cache_

Detailed Description

template<typename Tag>
class folly::detail::ThreadCachedInts< Tag >::Integer

Definition at line 43 of file ThreadCachedInts.h.

Constructor & Destructor Documentation

template<typename Tag>

constexpr folly::detail::ThreadCachedInts< Tag >::Integer::Integer ( ThreadCachedInts *  ints )

inlinenoexcept

Definition at line 46 of file ThreadCachedInts.h.

References folly::detail::ThreadCachedInts< Tag >::Integer::cache_, and folly::detail::ThreadCachedInts< Tag >::Integer::dec_.

Referenced by folly::detail::ThreadCachedInts< folly::detail::folly::detail::Tag >::init().

        : ints_(ints), inc_{}, dec_{}, cache_(ints->int_cache_) {}

template<typename Tag>

folly::detail::ThreadCachedInts< Tag >::Integer::~Integer ( )

inlinenoexcept

Definition at line 51 of file ThreadCachedInts.h.

References folly::asymmetricLightBarrier(), folly::detail::futexWake(), deadlock::load(), folly::detail::ThreadCachedInts< Tag >::orphan_dec_, folly::detail::ThreadCachedInts< Tag >::orphan_inc_, and folly::detail::ThreadCachedInts< Tag >::waiting_.

                        {
      // Increment counts must be set before decrement counts
      ints_->orphan_inc_[0].fetch_add(
          inc_[0].load(std::memory_order_relaxed), std::memory_order_relaxed);
      ints_->orphan_inc_[1].fetch_add(
          inc_[1].load(std::memory_order_relaxed), std::memory_order_relaxed);
      folly::asymmetricLightBarrier(); // B
      ints_->orphan_dec_[0].fetch_add(
          dec_[0].load(std::memory_order_relaxed), std::memory_order_relaxed);
      ints_->orphan_dec_[1].fetch_add(
          dec_[1].load(std::memory_order_relaxed), std::memory_order_relaxed);
      ints_->waiting_.store(0, std::memory_order_release);
      detail::futexWake(&ints_->waiting_);
      // reset the cache_ on destructor so we can handle the delete/recreate
      cache_ = nullptr;
    }

Member Data Documentation

template<typename Tag>

Integer*& folly::detail::ThreadCachedInts< Tag >::Integer::cache_

Definition at line 50 of file ThreadCachedInts.h.

Referenced by folly::detail::ThreadCachedInts< Tag >::Integer::Integer().

template<typename Tag>

std::atomic<int64_t> folly::detail::ThreadCachedInts< Tag >::Integer::dec_[2]

Definition at line 49 of file ThreadCachedInts.h.

Referenced by folly::detail::ThreadCachedInts< Tag >::Integer::Integer().

template<typename Tag>

std::atomic<int64_t> folly::detail::ThreadCachedInts< Tag >::Integer::inc_[2]

Definition at line 48 of file ThreadCachedInts.h.

template<typename Tag>

ThreadCachedInts* folly::detail::ThreadCachedInts< Tag >::Integer::ints_

Definition at line 45 of file ThreadCachedInts.h.

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

• proxygen/folly/folly/synchronization/detail/ThreadCachedInts.h