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reader_writer_lock Class

Visual Studio 2012

Visual Studio 2010

A writer-preference queue-based reader-writer lock with local only spinning. The lock grants first in - first out (FIFO) access to writers and starves readers under a continuous load of writers.

class reader_writer_lock;

Members

Public Classes

Name	Description
reader_writer_lock::scoped_lock Class	An exception safe RAII wrapper that can be used to acquire reader_writer_lock lock objects as a writer.
reader_writer_lock::scoped_lock_read Class	An exception safe RAII wrapper that can be used to acquire reader_writer_lock lock objects as a reader.

Public Constructors

Name	Description
reader_writer_lock::reader_writer_lock Constructor	Constructs a new reader_writer_lock object.
reader_writer_lock::~reader_writer_lock Destructor	Destroys the reader_writer_lock object.

Public Methods

Name	Description
reader_writer_lock::lock Method	Acquires the reader-writer lock as a writer.
reader_writer_lock::lock_read Method	Acquires the reader-writer lock as a reader. If there are writers, active readers have to wait until they are done. The reader simply registers an interest in the lock and waits for writers to release it.
reader_writer_lock::try_lock Method	Attempts to acquire the reader-writer lock as a writer without blocking.
reader_writer_lock::try_lock_read Method	Attempts to acquire the reader-writer lock as a reader without blocking.
reader_writer_lock::unlock Method	Unlocks the reader-writer lock based on who locked it, reader or writer.

Remarks

For more information, see Synchronization Data Structures.

Inheritance Hierarchy

reader_writer_lock

Requirements

Header: concrt.h

Namespace: concurrency

Reference

concurrency Namespace

critical_section Class

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