/// <summary>
/// Initializes a new instance of the <see cref="DisposableReaderWriter"/> class.
/// </summary>
/// <param name="root">The root.</param>
/// <param name="type">The type.</param>
public DisposableReaderWriter(IExposesReaderWriterLock root, ReaderWriterLockSynchronizeType type)
{
m_Root = root;
m_SynchronizeType = type;
AcquireLock();
}
/// <summary>
/// Initializes a new instance of the <see cref="DisposableLockGrabber"/> class.
/// </summary>
/// <param name="rwlock">The rwlock.</param>
/// <param name="type">The type.</param>
/// <param name="timeoutMilliseconds">The timeout milliseconds.</param>
public DisposableLockGrabber(ReaderWriterLock rwlock, ReaderWriterLockSynchronizeType type, int timeoutMilliseconds)
{
m_rwlock = rwlock;
m_type = type;
DoLock(timeoutMilliseconds);
}
/// <summary>
/// Initializes a new instance of the <see cref="DisposableReaderWriter"/> class.
/// </summary>
/// <param name="root">The root.</param>
/// <param name="type">The type.</param>
public DisposableReaderWriter(IExposesReaderWriterLock root, ReaderWriterLockSynchronizeType type)
{
m_Root = root;
m_SynchronizeType = type;
AcquireLock();
}
/// <summary>
/// Downgrades from writer lock.
/// </summary>
public virtual void DowngradeFromWriterLock()
{
if (m_UpgradeLockCookie != null)
{
m_SynchronizeType = ReaderWriterLockSynchronizeType.Read;
LockCookie tempCookie = m_UpgradeLockCookie.Value;
m_Root.Sync.DowngradeFromWriterLock(ref tempCookie);
m_UpgradeLockCookie = null;
}
}
/// <summary>
/// This can only be used if there will be no other static calls to this method within the
/// context of this call on this thread.
/// </summary>
/// <param name="rwlock">The rwlock.</param>
/// <param name="type">The type.</param>
/// <param name="timeoutMilliseconds">The timeout milliseconds.</param>
/// <returns></returns>
public static DisposableLockGrabber GetLock(ReaderWriterLock rwlock, ReaderWriterLockSynchronizeType type, int timeoutMilliseconds)
{
// This is because there is only one instance per thread
if (s_lock == null)
{
s_lock = new DisposableLockGrabber();
}
s_lock.m_rwlock = rwlock;
s_lock.m_type = type;
s_lock.DoLock(timeoutMilliseconds);
return s_lock;
}
/// <summary>
/// This can only be used if there will be no other static calls to this method within the
/// context of this call on this thread.
/// </summary>
/// <param name="rwlock">The rwlock.</param>
/// <param name="type">The type.</param>
/// <returns></returns>
public static DisposableLockGrabber GetLock(ReaderWriterLock rwlock, ReaderWriterLockSynchronizeType type)
{
return GetLock(rwlock, type, -1);
}
/// <summary>
/// Initializes a new instance of the <see cref="DisposableLockGrabber"/> class.
/// </summary>
/// <param name="rwlock">The rwlock.</param>
/// <param name="type">The type.</param>
public DisposableLockGrabber(ReaderWriterLock rwlock, ReaderWriterLockSynchronizeType type)
: this(rwlock, type, -1)
{
}
/// <summary>
/// Upgrades to writer lock.
/// </summary>
public virtual void UpgradeToWriterLock()
{
m_SynchronizeType = ReaderWriterLockSynchronizeType.Write;
m_UpgradeLockCookie = m_Root.Sync.UpgradeToWriterLock(DefaultLockTimeout);
}
