/// <summary>
/// Executes a parallel Foreach loop.
/// </summary>
/// <typeparam name="T">type</typeparam>
/// <param name="items">Loop items.</param>
/// <param name="loopBody">Loop body.</param>
/// <remarks>The method is used to parallelise for loop by running iterations across
/// several threads.
/// Example usage:
/// <code>
/// foreach ( Molecule molecule in molecules )
/// {
/// System.Diagnostics.Debug.WriteLine( "molecule.Title = " + molecule.Title );
/// }
/// </code>
/// can be replaced by:
/// <code>
/// Parallel.ForEach{Molecule}( molecules, delegate( Molecule molecule )
/// {
/// System.Diagnostics.Debug.WriteLine( "molecule.Title = " + molecule.Title );
/// } );
/// </code>
/// If <c>Parallel.ThreadCount</c> is exactly <c>1</c>, no threads are spawned.
/// </remarks>
public static void ForEach <T>(IEnumerable <T> items, [NotNull, InstantHandle] Action <T> loopBody)
{
if (items == null)
{
throw new ArgumentNullException("items");
}
if (loopBody == null)
{
throw new ArgumentNullException("loopBody");
}
if (Parallel.threadCount == 1)
{
foreach (T item in items)
{
loopBody(item);
}
}
else
{
lock (lockObject)
{
ParallelForEach <T> parallel = ParallelForEach <T> .GetInstance(threadCount);
parallel.DoForEach(items, loopBody);
}
}
}
/// <summary>
/// Executes a parallel Foreach loop.
/// </summary>
/// <typeparam name="T">type</typeparam>
/// <param name="items">Loop items.</param>
/// <param name="loopBody">Loop body.</param>
/// <remarks>The method is used to parallelise for loop by running iterations across
/// several threads.
/// Example usage:
/// <code>
/// foreach ( Molecule molecule in molecules )
/// {
/// System.Diagnostics.Debug.WriteLine( "molecule.Title = " + molecule.Title );
/// }
/// </code>
/// can be replaced by:
/// <code>
/// Parallel.ForEach{Molecule}( molecules, delegate( Molecule molecule )
/// {
/// System.Diagnostics.Debug.WriteLine( "molecule.Title = " + molecule.Title );
/// } );
/// </code>
/// If <c>Parallel.ThreadCount</c> is exactly <c>1</c>, no threads are spawned.
/// </remarks>
public static void ForEach <T>(IEnumerable <T> items, ParallelForEach <T> .ForEachLoopDelegate loopBody)
{
if (Parallel.threadCount == 1)
{
foreach (T item in items)
{
loopBody(item);
}
}
else
{
lock (lockObject) {
ParallelForEach <T> parallel = ParallelForEach <T> .GetInstance(threadCount);
parallel.DoForEach(items, loopBody);
}
}
}