tbb::queuing_rw_mutex::scoped_lock Class Reference

The scoped locking pattern. More...

#include <queuing_rw_mutex.h>

Inherits tbb::internal::no_copy.

Inheritance diagram for tbb::queuing_rw_mutex::scoped_lock:

[legend]List of all members.

Public Member Functions
	scoped_lock ()
	Construct lock that has not acquired a mutex.
	scoped_lock (queuing_rw_mutex &m, bool write=true)
	Acquire lock on given mutex.
	~scoped_lock ()
	Release lock (if lock is held).
void	acquire (queuing_rw_mutex &m, bool write=true)
	Acquire lock on given mutex.
bool	try_acquire (queuing_rw_mutex &m, bool write=true)
	Try acquire lock on given mutex.
void	release ()
	Release lock.
bool	upgrade_to_writer ()
	Upgrade reader to become a writer.
bool	downgrade_to_reader ()
	Downgrade writer to become a reader.

---

Detailed Description

The scoped locking pattern.

It helps to avoid the common problem of forgetting to release lock. It also nicely provides the "node" for queuing locks.

---

Constructor & Destructor Documentation

tbb::queuing_rw_mutex::scoped_lock::scoped_lock (   )  [inline]

Construct lock that has not acquired a mutex. Equivalent to zero-initialization of *this.

tbb::queuing_rw_mutex::scoped_lock::scoped_lock (  queuing_rw_mutex &  m, bool  write = true )  [inline]

Acquire lock on given mutex. Upon entry, *this should not be in the "have acquired a mutex" state.

---

Member Function Documentation

bool tbb::queuing_rw_mutex::scoped_lock::upgrade_to_writer (   )

Upgrade reader to become a writer. Returns true if the upgrade happened without re-acquiring the lock and false if opposite

---

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

• queuing_rw_mutex.h

---

Copyright © 2005-2008 Intel Corporation. All Rights Reserved.

Intel, Pentium, Intel Xeon, Itanium, Intel XScale and VTune are registered trademarks or trademarks of Intel Corporation or its subsidiaries in the United States and other countries.

* Other names and brands may be claimed as the property of others.