libMesh::Threads::spin_mutex Class Reference

Spin mutex. More...

#include <threads_none.h>

Classes
class	scoped_lock

Public Member Functions
	spin_mutex ()
void	lock ()
void	unlock ()
	spin_mutex ()
	~spin_mutex ()=default
void	lock ()
void	unlock ()
	spin_mutex ()
	~spin_mutex ()=default
void	lock ()
void	unlock ()
	spin_mutex ()
	~spin_mutex ()
void	lock ()
void	unlock ()

Private Attributes
os_unfair_lock	ulock
OSSpinLock	slock
pthread_spinlock_t	slock

Detailed Description

Spin mutex.

Implements mutual exclusion by busy-waiting in user space for the lock to be acquired.

Definition at line 127 of file threads_none.h.

Constructor & Destructor Documentation

spin_mutex() [1/4]

libMesh::Threads::spin_mutex::spin_mutex ( )

inline

Definition at line 130 of file threads_none.h.

{}

spin_mutex() [2/4]

libMesh::Threads::spin_mutex::spin_mutex ( )

inline

Definition at line 87 of file threads_pthread.h.

References ulock.

{ ulock = OS_UNFAIR_LOCK_INIT; }

~spin_mutex() [1/3]

libMesh::Threads::spin_mutex::~spin_mutex ( )

default

spin_mutex() [3/4]

libMesh::Threads::spin_mutex::spin_mutex ( )

inline

Definition at line 115 of file threads_pthread.h.

: slock(0) {} // The convention is that the lock being zero is _unlocked_

~spin_mutex() [2/3]

libMesh::Threads::spin_mutex::~spin_mutex ( )

default

spin_mutex() [4/4]

libMesh::Threads::spin_mutex::spin_mutex ( )

inline

Definition at line 145 of file threads_pthread.h.

References slock.

{ pthread_spin_init(&slock, PTHREAD_PROCESS_PRIVATE); }

~spin_mutex() [3/3]

libMesh::Threads::spin_mutex::~spin_mutex ( )

inline

Definition at line 146 of file threads_pthread.h.

References slock.

{ pthread_spin_destroy(&slock); }

Member Function Documentation

lock() [1/4]

void libMesh::Threads::spin_mutex::lock ( )

inline

Definition at line 90 of file threads_pthread.h.

References ulock.

{ os_unfair_lock_lock(&ulock); }

lock() [2/4]

void libMesh::Threads::spin_mutex::lock ( )

inline

Definition at line 118 of file threads_pthread.h.

References slock.

{ OSSpinLockLock(&slock); }

lock() [3/4]

void libMesh::Threads::spin_mutex::lock ( )

inline

Definition at line 131 of file threads_none.h.

Referenced by libMesh::Threads::spin_mutex::scoped_lock::acquire(), libMesh::Threads::lock_singleton_spin_mutex(), and libMesh::Threads::spin_mutex::scoped_lock::scoped_lock().

{}

lock() [4/4]

void libMesh::Threads::spin_mutex::lock ( )

inline

Definition at line 148 of file threads_pthread.h.

References slock.

{ pthread_spin_lock(&slock); }

unlock() [1/4]

void libMesh::Threads::spin_mutex::unlock ( )

inline

Definition at line 91 of file threads_pthread.h.

References ulock.

{ os_unfair_lock_unlock(&ulock); }

unlock() [2/4]

void libMesh::Threads::spin_mutex::unlock ( )

inline

Definition at line 119 of file threads_pthread.h.

References slock.

{ OSSpinLockUnlock(&slock); }

unlock() [3/4]

void libMesh::Threads::spin_mutex::unlock ( )

inline

Definition at line 132 of file threads_none.h.

Referenced by libMesh::Threads::spin_mutex::scoped_lock::release(), and libMesh::Threads::unlock_singleton_spin_mutex().

{}

unlock() [4/4]

void libMesh::Threads::spin_mutex::unlock ( )

inline

Definition at line 149 of file threads_pthread.h.

References slock.

{ pthread_spin_unlock(&slock); }

Member Data Documentation

slock [1/2]

OSSpinLock libMesh::Threads::spin_mutex::slock

private

Definition at line 137 of file threads_pthread.h.

Referenced by lock(), spin_mutex(), unlock(), and ~spin_mutex().

slock [2/2]

pthread_spinlock_t libMesh::Threads::spin_mutex::slock

private

Definition at line 167 of file threads_pthread.h.

ulock

os_unfair_lock libMesh::Threads::spin_mutex::ulock

private

Definition at line 109 of file threads_pthread.h.

Referenced by lock(), spin_mutex(), and unlock().

---

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

• include/parallel/threads_none.h
• include/parallel/threads_pthread.h