#include <RWLocks.h>

Public Member Functions
	read_lock (const T *cat)

	~read_lock ()

Private Member Functions
template<typename inner_type >
void	lock_catalog (const inner_type *cat)

Private Attributes
const T *	catalog

mapd_shared_lock < mapd_shared_mutex >	lock

bool	holds_lock

Detailed Description

template<typename T>
class Catalog_Namespace::read_lock< T >

Definition at line 37 of file RWLocks.h.

Constructor & Destructor Documentation

template<typename T >

Catalog_Namespace::read_lock< T >::read_lock ( const T * cat )

inline

Definition at line 54 of file RWLocks.h.

References Catalog_Namespace::read_lock< T >::lock_catalog().

54 : catalog(cat), holds_lock(false) { lock_catalog(cat); }

Catalog_Namespace::read_lock::catalog

const T * catalog

Definition: RWLocks.h:38

Catalog_Namespace::read_lock::holds_lock

bool holds_lock

Definition: RWLocks.h:40

Catalog_Namespace::read_lock::lock_catalog

void lock_catalog(const inner_type *cat)

Definition: RWLocks.h:43

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template<typename T >

Catalog_Namespace::read_lock< T >::~read_lock ( )

inline

Definition at line 56 of file RWLocks.h.

References Catalog_Namespace::read_lock< T >::holds_lock.

                {
     if (holds_lock) {
       T::thread_holds_read_lock = false;
     }
   }

Member Function Documentation

template<typename T >

template<typename inner_type >

void Catalog_Namespace::read_lock< T >::lock_catalog ( const inner_type * cat )

inlineprivate

Definition at line 43 of file RWLocks.h.

References Catalog_Namespace::read_lock< T >::holds_lock, and Catalog_Namespace::read_lock< T >::lock.

Referenced by Catalog_Namespace::read_lock< T >::read_lock().

                                            {
     std::thread::id tid = std::this_thread::get_id();
 
     if (cat->thread_holding_write_lock != tid && !inner_type::thread_holds_read_lock) {
       lock = mapd_shared_lock<mapd_shared_mutex>(cat->sharedMutex_);
       inner_type::thread_holds_read_lock = true;
       holds_lock = true;
     }
   }