ROOT::TReentrantRWLock< MutexT, RecurseCountsT > Class Template Reference

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>
class ROOT::TReentrantRWLock< MutexT, RecurseCountsT >

Definition at line 279 of file TReentrantRWLock.hxx.

Public Types
using	State = TVirtualRWMutex::State
using	StateDelta = TVirtualRWMutex::StateDelta

Public Member Functions
	TReentrantRWLock ()
	Regular constructor.
void	Apply (std::unique_ptr< StateDelta > &&delta)
	Re-apply a delta.
std::unique_ptr< State >	GetStateBefore ()
	Get the lock state before the most recent write lock was taken.
TVirtualRWMutex::Hint_t *	ReadLock ()
	Acquire the lock in read mode.
void	ReadUnLock (TVirtualRWMutex::Hint_t *)
	Release the lock in read mode.
std::unique_ptr< StateDelta >	Rewind (const State &earlierState)
	Rewind to an earlier mutex state, returning the delta.
TVirtualRWMutex::Hint_t *	WriteLock ()
	Acquire the lock in write mode.
void	WriteUnLock (TVirtualRWMutex::Hint_t *)
	Release the lock in write mode.

Private Member Functions
void	AssertReadCountLocIsFromCurrentThread (const size_t *presumedLocalReadersCount)
	Assert that presumedLocalReadersCount really matches the local read count.

Private Attributes
std::condition_variable_any	fCond
	! RWlock internal condition variable
MutexT	fMutex
	! RWlock internal mutex
std::atomic< int >	fReaderReservation
	! A reader wants access
std::atomic< int >	fReaders
	! Number of readers
RecurseCountsT	fRecurseCounts
	! Trackers for re-entry in the lock by the same thread.
std::atomic< bool >	fWriter
	! Is there a writer?
std::atomic< int >	fWriterReservation
	! A writer wants access

#include </home/sftnight/build/workspace/root-makedoc-v630/rootspi/rdoc/src/v6-30-00-patches/core/thread/src/TReentrantRWLock.hxx>

Member Typedef Documentation

State

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

using ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::State = TVirtualRWMutex::State

Definition at line 299 of file TReentrantRWLock.hxx.

StateDelta

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

using ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::StateDelta = TVirtualRWMutex::StateDelta

Definition at line 300 of file TReentrantRWLock.hxx.

Constructor & Destructor Documentation

TReentrantRWLock()

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::TReentrantRWLock ( )

inline

Regular constructor.

Definition at line 304 of file TReentrantRWLock.hxx.

Member Function Documentation

Apply()

template<typename MutexT , typename RecurseCountsT >

void TReentrantRWLock::Apply

(

std::unique_ptr< StateDelta > &&

delta

)

Re-apply a delta.

Definition at line 358 of file TReentrantRWLock.cxx.

AssertReadCountLocIsFromCurrentThread()

template<typename MutexT , typename RecurseCountsT >

void TReentrantRWLock::AssertReadCountLocIsFromCurrentThread ( const size_t *  presumedLocalReadersCount )

private

Assert that presumedLocalReadersCount really matches the local read count.

Print an error message if not.

Definition at line 394 of file TReentrantRWLock.cxx.

GetStateBefore()

template<typename MutexT , typename RecurseCountsT >

std::unique_ptr< TVirtualRWMutex::State > TReentrantRWLock::GetStateBefore

Get the lock state before the most recent write lock was taken.

Definition at line 260 of file TReentrantRWLock.cxx.

ReadLock()

template<typename MutexT , typename RecurseCountsT >

TVirtualRWMutex::Hint_t * TReentrantRWLock::ReadLock

Acquire the lock in read mode.

Definition at line 70 of file TReentrantRWLock.cxx.

ReadUnLock()

template<typename MutexT , typename RecurseCountsT >

void TReentrantRWLock::ReadUnLock

(

TVirtualRWMutex::Hint_t *

hint

)

Release the lock in read mode.

Definition at line 137 of file TReentrantRWLock.cxx.

Rewind()

template<typename MutexT , typename RecurseCountsT >

std::unique_ptr< TVirtualRWMutex::StateDelta > TReentrantRWLock::Rewind

(

const State &

earlierState

)

Rewind to an earlier mutex state, returning the delta.

Definition at line 300 of file TReentrantRWLock.cxx.

WriteLock()

template<typename MutexT , typename RecurseCountsT >

TVirtualRWMutex::Hint_t * TReentrantRWLock::WriteLock

Acquire the lock in write mode.

Definition at line 169 of file TReentrantRWLock.cxx.

WriteUnLock()

template<typename MutexT , typename RecurseCountsT >

void TReentrantRWLock::WriteUnLock

(

TVirtualRWMutex::Hint_t *

)

Release the lock in write mode.

Definition at line 217 of file TReentrantRWLock.cxx.

Member Data Documentation

fCond

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

std::condition_variable_any ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::fCond

private

! RWlock internal condition variable

Definition at line 287 of file TReentrantRWLock.hxx.

fMutex

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

MutexT ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::fMutex

private

! RWlock internal mutex

Definition at line 286 of file TReentrantRWLock.hxx.

fReaderReservation

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

std::atomic<int> ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::fReaderReservation

private

! A reader wants access

Definition at line 283 of file TReentrantRWLock.hxx.

fReaders

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

std::atomic<int> ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::fReaders

private

! Number of readers

Definition at line 282 of file TReentrantRWLock.hxx.

fRecurseCounts

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

RecurseCountsT ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::fRecurseCounts

private

! Trackers for re-entry in the lock by the same thread.

Definition at line 289 of file TReentrantRWLock.hxx.

fWriter

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

std::atomic<bool> ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::fWriter

private

! Is there a writer?

Definition at line 285 of file TReentrantRWLock.hxx.

fWriterReservation

template<typename MutexT = ROOT::TSpinMutex, typename RecurseCountsT = Internal::RecurseCounts>

std::atomic<int> ROOT::TReentrantRWLock< MutexT, RecurseCountsT >::fWriterReservation

private

! A writer wants access

Definition at line 284 of file TReentrantRWLock.hxx.