folly::threadlocal_detail::StaticMetaBase::EntryID Class Reference

#include <ThreadLocalDetail.h>

Public Member Functions
constexpr	EntryID ()
	EntryID (EntryID &&other) noexcept
EntryID &	operator= (EntryID &&other)
	EntryID (const EntryID &other)=delete
EntryID &	operator= (const EntryID &other)=delete
uint32_t	getOrInvalid ()
uint32_t	getOrAllocate (StaticMetaBase &meta)

Public Attributes
std::atomic< uint32_t >	value

Detailed Description

Definition at line 304 of file ThreadLocalDetail.h.

Constructor & Destructor Documentation

constexpr folly::threadlocal_detail::StaticMetaBase::EntryID::EntryID ( )

inline

Definition at line 308 of file ThreadLocalDetail.h.

: value(kEntryIDInvalid) {}

folly::threadlocal_detail::StaticMetaBase::EntryID::EntryID ( EntryID &&  other )

inlinenoexcept

Definition at line 310 of file ThreadLocalDetail.h.

References folly::threadlocal_detail::kEntryIDInvalid.

                                      : value(other.value.load()) {
      other.value = kEntryIDInvalid;
    }

folly::threadlocal_detail::StaticMetaBase::EntryID::EntryID ( const EntryID &  other )

delete

Member Function Documentation

uint32_t folly::threadlocal_detail::StaticMetaBase::EntryID::getOrAllocate ( StaticMetaBase &  meta )

inline

Definition at line 332 of file ThreadLocalDetail.h.

References folly::threadlocal_detail::StaticMetaBase::allocate(), and uint32_t.

                                                 {
      uint32_t id = getOrInvalid();
      if (id != kEntryIDInvalid) {
        return id;
      }
      // The lock inside allocate ensures that a single value is allocated
      return meta.allocate(this);
    }

uint32_t folly::threadlocal_detail::StaticMetaBase::EntryID::getOrInvalid ( )

inline

Definition at line 324 of file ThreadLocalDetail.h.

Referenced by folly::threadlocal_detail::StaticMeta< Tag, AccessMode >::getSlowReserveAndCache().

                            {
      // It's OK for this to be relaxed, even though we're effectively doing
      // double checked locking in using this value. We only care about the
      // uniqueness of IDs, getOrAllocate does not modify any other memory
      // this thread will use.
      return value.load(std::memory_order_relaxed);
    }

EntryID& folly::threadlocal_detail::StaticMetaBase::EntryID::operator= ( EntryID &&  other )

inline

Definition at line 314 of file ThreadLocalDetail.h.

References folly::threadlocal_detail::kEntryIDInvalid.

                                        {
      assert(this != &other);
      value = other.value.load();
      other.value = kEntryIDInvalid;
      return *this;
    }

EntryID& folly::threadlocal_detail::StaticMetaBase::EntryID::operator= ( const EntryID &  other )

delete

Member Data Documentation

std::atomic<uint32_t> folly::threadlocal_detail::StaticMetaBase::EntryID::value

Definition at line 306 of file ThreadLocalDetail.h.

Referenced by folly::threadlocal_detail::StaticMetaBase::allocate(), and folly::threadlocal_detail::StaticMetaBase::destroy().

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

• proxygen/folly/folly/detail/ThreadLocalDetail.h