src/system/kernel/scheduler/scheduler_modes.h

   1 /*
   2  * Copyright 2013, Paweł Dziepak, pdziepak@quarnos.org.
   3  * Distributed under the terms of the MIT License.
   4  */
   5 #ifndef KERNEL_SCHEDULER_MODES_H
   6 #define KERNEL_SCHEDULER_MODES_H
   7
   8
   9 #include <kscheduler.h>
  10 #include <thread_types.h>
  11
  12
  13 struct scheduler_mode_operations {
  14         const char*                             name;
  15
  16         bigtime_t                               base_quantum;
  17         bigtime_t                               minimal_quantum;
  18         bigtime_t                               quantum_multipliers[2];
  19
  20         bigtime_t                               maximum_latency;
  21
  22         void                                    (*switch_to_mode)();
  23         void                                    (*set_cpu_enabled)(int32 cpu, bool enabled);
  24         bool                                    (*has_cache_expired)(
  25                                                                 const Scheduler::ThreadData* threadData);
  26         Scheduler::CoreEntry*   (*choose_core)(
  27                                                                 const Scheduler::ThreadData* threadData);
  28         Scheduler::CoreEntry*   (*rebalance)(
  29                                                                 const Scheduler::ThreadData* threadData);
  30         void                                    (*rebalance_irqs)(bool idle);
  31 };
  32
  33 extern struct scheduler_mode_operations gSchedulerLowLatencyMode;
  34 extern struct scheduler_mode_operations gSchedulerPowerSavingMode;
  35
  36
  37 namespace Scheduler {
  38
  39
  40 extern scheduler_mode gCurrentModeID;
  41 extern scheduler_mode_operations* gCurrentMode;
  42
  43
  44 }
  45
  46
  47 #endif  // KERNEL_SCHEDULER_MODES_H
  48