/// <summary>
/// Waits for all the specified <see cref="ManualResetEventSlim"/> elements to receive a signal.
/// </summary>
/// <param name="resetEvents">Collection of <see cref="ManualResetEventSlim"/> elements to operate on.</param>
/// <param name="cancellationToken">A <see cref="System.Threading.CancellationToken"/> to observe.</param>
/// <returns><c>true</c> when every <see cref="ManualResetEventSlim"/> element has received a signal; otherwise the method never returns unless cancelled.</returns>
/// <exception cref="ArgumentNullException"><paramref name="resetEvents"/> is <c>null</c>.</exception>
/// <remarks>
/// Using <see cref="WaitHandle.WaitAll(WaitHandle[])"/> will cause all <see cref="ManualResetEventSlim"/> elements
/// to be upgraded to a standard <see cref="ManualResetEvent"/>, these overloads allow similar functionality without
/// incurring unconditional inflation of the underlying <see cref="ManualResetEvent"/>.
/// </remarks>
public static bool WaitAll(this IEnumerable<ManualResetEventSlim> resetEvents, System.Threading.CancellationToken cancellationToken)
{
if ((object)resetEvents == null)
throw new ArgumentNullException(nameof(resetEvents));
return resetEvents.AllParallel(resetEvent => { resetEvent.Wait(cancellationToken); return !cancellationToken.IsCancellationRequested; });
}
/// <summary>
/// Waits for all the specified <see cref="ManualResetEventSlim"/> elements to receive a signal.
/// </summary>
/// <param name="resetEvents">Collection of <see cref="ManualResetEventSlim"/> elements to operate on.</param>
/// <param name="cancellationToken">A <see cref="CancellationToken"/> to observe, if any.</param>
/// <returns><c>true</c> when every <see cref="ManualResetEventSlim"/> element has received a signal; otherwise the method never returns unless cancelled.</returns>
/// <exception cref="ArgumentNullException"><paramref name="resetEvents"/> is <c>null</c>.</exception>
/// <remarks>
/// Using <see cref="WaitHandle.WaitAll(WaitHandle[])"/> will cause all <see cref="ManualResetEventSlim"/> elements
/// to be upgraded to a standard <see cref="ManualResetEvent"/>, these overloads allow similar functionality without
/// incurring unconditional inflation of the underlying <see cref="ManualResetEvent"/>.
/// </remarks>
public static bool WaitAll(this IEnumerable<ManualResetEventSlim> resetEvents, CancellationToken cancellationToken = null)
{
if ((object)resetEvents == null)
throw new ArgumentNullException(nameof(resetEvents));
if ((object)cancellationToken == null)
return resetEvents.AllParallel(resetEvent => { resetEvent.Wait(); return true; } );
return resetEvents.WaitAll(new CompatibleCancellationToken(cancellationToken));
}
/// <summary>
/// Waits for all the specified <see cref="ManualResetEventSlim"/> elements to receive a signal, using a <see cref="TimeSpan"/> value to specify the maximum time interval to wait.
/// </summary>
/// <param name="resetEvents">Collection of <see cref="ManualResetEventSlim"/> elements to operate on.</param>
/// <param name="timeout">A <see cref="TimeSpan"/> that represents the number of milliseconds to wait, or a <see cref="TimeSpan"/> that represents -1 milliseconds, to wait indefinitely.</param>
/// <param name="cancellationToken">A <see cref="System.Threading.CancellationToken"/> to observe.</param>
/// <returns><c>true</c> when every <see cref="ManualResetEventSlim"/> element has received a signal; otherwise <c>false</c>.</returns>
/// <exception cref="ArgumentNullException"><paramref name="resetEvents"/> is <c>null</c>.</exception>
/// <remarks>
/// Using <see cref="WaitHandle.WaitAll(WaitHandle[])"/> will cause all <see cref="ManualResetEventSlim"/> elements
/// to be upgraded to a standard <see cref="ManualResetEvent"/>, these overloads allow similar functionality without
/// incurring unconditional inflation of the underlying <see cref="ManualResetEvent"/>.
/// </remarks>
public static bool WaitAll(this IEnumerable<ManualResetEventSlim> resetEvents, TimeSpan timeout, System.Threading.CancellationToken cancellationToken)
{
if ((object)resetEvents == null)
throw new ArgumentNullException(nameof(resetEvents));
return resetEvents.AllParallel(resetEvent => resetEvent.Wait(timeout, cancellationToken));
}
