/// <summary>
/// Releases an acquired lock.
/// </summary>
/// <param name="Lock">Lock object to release.</param>
public void ReleaseLock(DatabaseLock Lock)
{
log.Trace("(Lock:{0})", Lock);
Lock.Lock.Release();
log.Trace("(-)");
}
/// <summary>
/// Asynchronously acquires a lock to prevent race conditions.
/// </summary>
/// <param name="Lock">Lock object to acquire.</param>
/// <remarks>The caller is responsible for releasing the lock by calling ReleaseLock.</remarks>
public async Task AcquireLockAsync(DatabaseLock Lock)
{
log.Trace("(Lock:{0})", Lock);
await Lock.Lock.WaitAsync();
log.Trace("(-)");
}
/// <summary>
/// Acquires a lock to prevent race conditions.
/// </summary>
/// <param name="Lock">Lock object to acquire.</param>
/// <remarks>The caller is responsible for releasing the lock by calling ReleaseLock.</remarks>
public void AcquireLock(DatabaseLock Lock)
{
log.Trace("(Lock:{0})", Lock);
Lock.Lock.Wait();
log.Trace("(-)");
}
/// <summary>
/// Starts database transaction and acquires a lock.
/// The transaction makes sure the whole operation is atomic,
/// the lock is used to prevent race conditions among threads.
/// </summary>
/// <param name="Lock">Lock to protect the transaction.</param>
/// <returns>Entity Framework transaction object.</returns>
/// <remarks>The caller is responsible for releasing the lock by calling ReleaseLock.</remarks>
public IDbContextTransaction BeginTransactionWithLock(DatabaseLock Lock)
{
log.Trace("(Lock:{0})", Lock);
Lock.Lock.Wait();
IDbContextTransaction result = Context.Database.BeginTransaction(IsolationLevel.Serializable);
log.Trace("(-)");
return(result);
}
/// <summary>
/// Asynchronously starts database transaction and acquires a lock.
/// The transaction makes sure the whole operation is atomic,
/// the lock is used to prevent race conditions among threads.
/// </summary>
/// <param name="Lock">Lock to protect the transaction.</param>
/// <returns>Entity Framework transaction object.</returns>
/// <remarks>The caller is responsible for releasing the lock by calling ReleaseLock.</remarks>
public async Task <IDbContextTransaction> BeginTransactionWithLockAsync(DatabaseLock Lock)
{
log.Trace("(Lock:{0})", Lock);
await Lock.Lock.WaitAsync();
IDbContextTransaction result = await Context.Database.BeginTransactionAsync(IsolationLevel.Serializable);
log.Trace("(-)");
return(result);
}