///////////////////////////////////////////////////////////////////////////////
//
//  Microsoft Research Singularity
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
//  File:   Scheduler.csi
//
//  Note:   Assembly strong name information.
//

using System;

[assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
[assembly: System.Reflection.AssemblyKeyFileAttribute("public.snk")]
[assembly: System.Reflection.AssemblyDelaySignAttribute(true)]

namespace Microsoft.Singularity.Scheduling
{
    public class Scheduler
    {
        public static void Initialize();
        public static void Start();
        public static void Finalize();

        // Methods inherited from old IScheduler.

        public static ISchedulerThread CreateSchedulerThread(Thread thread);
        public static ISchedulerProcessor CreateSchedulerProcessor(Processor processor);
        public static ISchedulerActivity CreateSchedulerActivity();
        public static ISchedulerCpuReservation ReserveCpu(ISchedulerActivity activity,
                                                          CpuResourceAmount amount,
                                                          TimeSpan period);
        public static bool NextThread(out Thread nextThread);
        public static bool ShouldReschedule();

        /// <summary>
        /// Note that as tasks now contain resource accounting, there is
        /// no need to pass out the resource usage from the scheduler.
        /// For consistency we'll still pass it out of the Task API at least
        /// until instantaneous usage is fixed.
        /// </summary>
        /// <returns>Returns true if admitted.</returns>
        public static bool BeginConstraint(Hashtable resourceEstimates,
                                           SchedulerTime deadline,
                                           ISchedulerTask taskToEnd,
                                           out ISchedulerTask schedulerTask);
        public static void BeginDelayedConstraint(Hashtable resourceEstimates,
                                                  TimeSpan relativeDeadline,
                                                  ISchedulerTask taskToEnd,
                                                  out ISchedulerTask schedulerTask);
        public static bool EndConstraint(ISchedulerTask taskToEnd);
    }
}