Mutexes

Collaboration diagram for Mutexes:

Macros
#define	__cpp_lib_scoped_lock
#define	__cpp_lib_shared_mutex
#define	__cpp_lib_shared_timed_mutex

Functions
void	std::__once_proxy (void)
template<typename _Callable , typename... _Args>
void	std::call_once (once_flag &__once, _Callable &&__f, _Args &&... __args)
template<typename _L1 , typename _L2 , typename... _L3>
void	std::lock (_L1 &__l1, _L2 &__l2, _L3 &... __l3)
template<typename _Mutex >
void	swap (shared_lock< _Mutex > &__x, shared_lock< _Mutex > &__y) noexcept
template<typename _L1 , typename _L2 , typename... _L3>
int	std::try_lock (_L1 &__l1, _L2 &__l2, _L3 &... __l3)

Variables
constexpr adopt_lock_t	std::adopt_lock
constexpr defer_lock_t	std::defer_lock
constexpr try_to_lock_t	std::try_to_lock

Detailed Description

Classes for mutex support.

Function Documentation

call_once()

template<typename _Callable , typename... _Args>

void std::call_once	(	once_flag &	__once,
		_Callable &&	__f,
		_Args &&...	__args
	)

Invoke a callable and synchronize with other calls using the same flag.

Definition at line 848 of file mutex.

lock()

template<typename _L1 , typename _L2 , typename... _L3>

void std::lock	(	_L1 &	__l1,
		_L2 &	__l2,
		_L3 &...	__l3
	)

Generic lock.

Parameters

__l1	Meets Lockable requirements (try_lock() may throw).
__l2	Meets Lockable requirements (try_lock() may throw).
__l3	Meets Lockable requirements (try_lock() may throw).

Exceptions

An	exception thrown by an argument's lock() or try_lock() member.

Postcondition

All arguments are locked.

All arguments are locked via a sequence of calls to lock(), try_lock() and unlock(). If this function exits via an exception any locks that were obtained will be released.

Definition at line 648 of file mutex.

References std::defer_lock, and std::try_lock().

swap()

template<typename _Mutex >

void swap ( shared_lock< _Mutex > &  __x, shared_lock< _Mutex > &  __y  )

related

Swap specialization for shared_lock.

Definition at line 851 of file shared_mutex.

try_lock()

template<typename _L1 , typename _L2 , typename... _L3>

int std::try_lock ( _L1 &  __l1, _L2 &  __l2, _L3 &...  __l3  )

inline

Generic try_lock.

Parameters

__l1	Meets Lockable requirements (try_lock() may throw).
__l2	Meets Lockable requirements (try_lock() may throw).
__l3	Meets Lockable requirements (try_lock() may throw).

Returns

Returns -1 if all try_lock() calls return true. Otherwise returns a 0-based index corresponding to the argument that returned false.

Postcondition

Either all arguments are locked, or none will be.

Sequentially calls try_lock() on each argument.

Definition at line 589 of file mutex.

Referenced by std::lock().

Variable Documentation

adopt_lock

constexpr adopt_lock_t std::adopt_lock

inlineconstexpr

Tag used to make a scoped lock take ownership of a locked mutex.

Definition at line 215 of file std_mutex.h.

defer_lock

constexpr defer_lock_t std::defer_lock

inlineconstexpr

Tag used to prevent a scoped lock from acquiring ownership of a mutex.

Definition at line 209 of file std_mutex.h.

Referenced by std::lock().

try_to_lock

constexpr try_to_lock_t std::try_to_lock

inlineconstexpr

Tag used to prevent a scoped lock from blocking if a mutex is locked.

Definition at line 212 of file std_mutex.h.