scheduler

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// vi:set ft=cpp: -*- Mode: C++ -*-
/*
 * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
 *               Alexander Warg <warg@os.inf.tu-dresden.de>
 *     economic rights: Technische Universität Dresden (Germany)
 *
 * This file is part of TUD:OS and distributed under the terms of the
 * GNU General Public License 2.
 * Please see the COPYING-GPL-2 file for details.
 *
 * As a special exception, you may use this file as part of a free software
 * library without restriction.  Specifically, if other files instantiate
 * templates or use macros or inline functions from this file, or you compile
 * this file and link it with other files to produce an executable, this
 * file does not by itself cause the resulting executable to be covered by
 * the GNU General Public License.  This exception does not however
 * invalidate any other reasons why the executable file might be covered by
 * the GNU General Public License.
 */
#pragma once
 
#include <l4/sys/icu>
#include <l4/sys/scheduler.h>
#include <l4/sys/capability>
#include <l4/sys/cxx/ipc_iface>
 
namespace L4 {
 
class L4_EXPORT Scheduler :
  public Kobject_t<Scheduler, Icu, L4_PROTO_SCHEDULER,
                   Type_info::Demand_t<1> >
{
public:
  // ABI function for 'info' call
  L4_INLINE_RPC_NF_OP(L4_SCHEDULER_INFO_OP,
      l4_msgtag_t, info, (l4_umword_t gran_offset, l4_umword_t *map,
                          l4_umword_t *cpu_max, l4_umword_t *sched_classes));
 
  l4_msgtag_t info(l4_umword_t *cpu_max, l4_sched_cpu_set_t *cpus,
                   l4_umword_t *sched_classes = nullptr,
                   l4_utcb_t *utcb = l4_utcb()) const noexcept
  {
    l4_umword_t max = 0;
    l4_umword_t sc = 0;
    l4_msgtag_t t =
      info_t::call(c(), cpus->gran_offset, &cpus->map, &max, &sc, utcb);
    if (cpu_max) *cpu_max = max;
    if (sched_classes) *sched_classes = sc;
    return t;
  }
 
  L4_INLINE_RPC_OP(L4_SCHEDULER_RUN_THREAD_OP,
      l4_msgtag_t, run_thread, (Ipc::Cap<Thread> thread, l4_sched_param_t const &sp));
 
  L4_INLINE_RPC_OP(L4_SCHEDULER_IDLE_TIME_OP,
      l4_msgtag_t, idle_time, (l4_sched_cpu_set_t const &cpus,
                               l4_kernel_clock_t *us));
 
  bool is_online(l4_umword_t cpu, l4_utcb_t *utcb = l4_utcb()) const noexcept
  { return l4_scheduler_is_online_u(cap(), cpu, utcb); }
 
  typedef L4::Typeid::Rpcs_sys<info_t, run_thread_t, idle_time_t> Rpcs;
};
}