Threads::Mutex::ScopedLock Class Reference

#include <deal.II/base/thread_management.h>

Public Member Functions
	ScopedLock (Mutex &m)
	~ScopedLock ()

Private Attributes
Mutex &	mutex

Detailed Description

Scoped lock class. When you declare an object of this type, you have to pass it a mutex, which is locked in the constructor of this class and unlocked in the destructor. The lock is thus held during the entire lifetime of this object, i.e. until the end of the present scope, which explains where the name comes from. This pattern of using locks with mutexes follows the resource-acquisition-is-initialization pattern, and was used first for mutexes by Doug Schmidt. It has the advantage that locking a mutex this way is thread-safe, i.e. when an exception is thrown between the locking and unlocking point, the destructor makes sure that the mutex is unlocked; this would not automatically be the case when you lock and unlock the mutex "by hand", i.e. using Mutex::acquire() and Mutex::release().

Definition at line 283 of file thread_management.h.

Constructor & Destructor Documentation

Threads::Mutex::ScopedLock::ScopedLock ( Mutex &  m )

inline

Constructor. Lock the mutex.

Definition at line 289 of file thread_management.h.

Threads::Mutex::ScopedLock::~ScopedLock ( )

inline

Destructor. Unlock the mutex. Since this is a dummy mutex class, this of course does nothing.

Definition at line 299 of file thread_management.h.

Member Data Documentation

Mutex& Threads::Mutex::ScopedLock::mutex

private

Store the address of the mutex object.

Definition at line 308 of file thread_management.h.

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

• deal.II/base/thread_management.h