class Poco::RWLock

Overview

A reader writer lock allows multiple concurrent readers or one exclusive writer. More…

#include <RWLock.h>

class RWLock: private Poco::RWLockImpl
{
public:
    // typedefs

    typedef ScopedRWLock ScopedLock;
    typedef ScopedReadRWLock ScopedReadLock;
    typedef ScopedWriteRWLock ScopedWriteLock;

    // methods

    void
    readLock();

    bool
    tryReadLock();

    void
    writeLock();

    bool
    tryWriteLock();

    void
    unlock();
};

Inherited Members

protected:
    // methods

    bool
    tryReadLockImpl();

    bool
    tryWriteLockImpl();

    void
    readLockImpl();

    bool
    tryReadLockImpl(DWORD timeout = 1);

    void
    writeLockImpl();

    bool
    tryWriteLockImpl(DWORD timeout = 1);

    void
    unlockImpl();

Detailed Documentation

A reader writer lock allows multiple concurrent readers or one exclusive writer.

Construction

~RWLock()

Destroys the Reader/Writer lock.

Methods

void
readLock()

Acquires a read lock.

If another thread currently holds a write lock, waits until the write lock is released.

bool
tryReadLock()

Tries to acquire a read lock.

Immediately returns true if successful, or false if another thread currently holds a write lock.

void
writeLock()

Acquires a write lock.

If one or more other threads currently hold locks, waits until all locks are released. The results are undefined if the same thread already holds a read or write lock

bool
tryWriteLock()

Tries to acquire a write lock.

Immediately returns true if successful, or false if one or more other threads currently hold locks. The result is undefined if the same thread already holds a read or write lock.

void
unlock()

Releases the read or write lock.