concurrent::ItemMutex< Key, Equal > Class Template Reference

#include <userver/concurrent/mutex_set.hpp>

Detailed Description

template<typename Key, typename Equal>
class concurrent::ItemMutex< Key, Equal >

Mutex-like object associated with the key of a MutexSet. It provides the same interface as engine::Mutex, you may use it with std::unique_lock, std::lock_guard, etc.

Note

different ItemMutex'es of the same MutexSet obtained with the same argument to GetMutexForKey() share the same critical section. IOW, if the first mutex is locked, the second one will block until the first mutex is unlocked.

can be used only from coroutines.

Definition at line 50 of file mutex_set.hpp.

Public Types
using	HashAndKey = utils::CachedHash<Key>
using	MutexDatum

Public Member Functions
	ItemMutex (MutexDatum &md, HashAndKey &&key)
void	lock ()
void	unlock ()
bool	try_lock ()
template<typename Rep , typename Period >
bool	try_lock_for (std::chrono::duration< Rep, Period >)
template<typename Clock , typename Duration >
bool	try_lock_until (std::chrono::time_point< Clock, Duration >)

Member Typedef Documentation

HashAndKey

template<typename Key , typename Equal >

using concurrent::ItemMutex< Key, Equal >::HashAndKey = utils::CachedHash<Key>

Definition at line 52 of file mutex_set.hpp.

MutexDatum

template<typename Key , typename Equal >

using concurrent::ItemMutex< Key, Equal >::MutexDatum

Initial value:

 
      impl::MutexDatum<HashAndKey, utils::CachedHashKeyEqual<Equal>>

Definition at line 54 of file mutex_set.hpp.

Constructor & Destructor Documentation

ItemMutex()

template<typename Key , typename Equal >

concurrent::ItemMutex< Key, Equal >::ItemMutex	(	MutexDatum &	md,
		HashAndKey &&	key )

Definition at line 124 of file mutex_set.hpp.

Member Function Documentation

lock()

template<typename Key , typename Equal >

void concurrent::ItemMutex< Key, Equal >::lock

(

)

Definition at line 128 of file mutex_set.hpp.

try_lock()

template<typename Key , typename Equal >

bool concurrent::ItemMutex< Key, Equal >::try_lock

(

)

Definition at line 162 of file mutex_set.hpp.

try_lock_for()

template<typename Key , typename Equal >

template<typename Rep , typename Period >

bool concurrent::ItemMutex< Key, Equal >::try_lock_for

(

std::chrono::duration< Rep, Period >

duration

)

Definition at line 169 of file mutex_set.hpp.

try_lock_until()

template<typename Key , typename Equal >

template<typename Clock , typename Duration >

bool concurrent::ItemMutex< Key, Equal >::try_lock_until

(

std::chrono::time_point< Clock, Duration >

time_point

)

Definition at line 177 of file mutex_set.hpp.

unlock()

template<typename Key , typename Equal >

void concurrent::ItemMutex< Key, Equal >::unlock

(

)

Definition at line 138 of file mutex_set.hpp.

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

• userver/concurrent/mutex_set.hpp