haiku/headers/private/kernel/kscheduler.h
Ingo Weinhold 79257a4ad6 Added a listener mechanism to the scheduler (ATM only for scheduler_simple).
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30242 a95241bf-73f2-0310-859d-f6bbb57e9c96
2009-04-18 17:24:58 +00:00

90 lines
2.6 KiB
C

/*
* Copyright 2008-2009, Ingo Weinhold, ingo_weinhold@gmx.de.
* Copyright 2005, Axel Dörfler, axeld@pinc-software.de.
* Distributed under the terms of the MIT License.
*/
#ifndef KERNEL_SCHEDULER_H
#define KERNEL_SCHEDULER_H
#include <SupportDefs.h>
struct scheduling_analysis;
struct thread;
struct SchedulerListener;
#ifdef __cplusplus
#include <util/DoublyLinkedList.h>
struct SchedulerListener : DoublyLinkedListLinkImpl<SchedulerListener> {
virtual ~SchedulerListener();
virtual void ThreadEnqueuedInRunQueue(
struct thread* thread) = 0;
virtual void ThreadRemovedFromRunQueue(
struct thread* thread) = 0;
virtual void ThreadScheduled(struct thread* oldThread,
struct thread* newThread) = 0;
};
typedef DoublyLinkedList<SchedulerListener> SchedulerListenerList;
extern SchedulerListenerList gSchedulerListeners;
#endif // __cplusplus
struct scheduler_ops {
void (*enqueue_in_run_queue)(struct thread* thread);
void (*reschedule)(void);
void (*set_thread_priority)(struct thread* thread, int32 priority);
// called when the thread structure is first created -
// initialization of per-thread housekeeping data structures should
// be done here
void (*on_thread_create)(struct thread* thread);
// called when a thread structure is initialized and made ready for
// use - should be used to reset the housekeeping data structures
// if needed
void (*on_thread_init)(struct thread* thread);
// called when a thread structure is freed - freeing up any allocated
// mem on the scheduler's part should be done here
void (*on_thread_destroy)(struct thread* thread);
void (*start)(void);
};
extern struct scheduler_ops* gScheduler;
#define scheduler_enqueue_in_run_queue(thread) \
gScheduler->enqueue_in_run_queue(thread)
#define scheduler_set_thread_priority(thread, priority) \
gScheduler->set_thread_priority(thread, priority)
#define scheduler_reschedule() gScheduler->reschedule()
#define scheduler_start() gScheduler->start()
#define scheduler_on_thread_create(thread) \
gScheduler->on_thread_create(thread)
#define scheduler_on_thread_init(thread) \
gScheduler->on_thread_init(thread)
#define scheduler_on_thread_destroy(thread) \
gScheduler->on_thread_destroy(thread)
#ifdef __cplusplus
extern "C" {
#endif
void scheduler_add_listener(struct SchedulerListener* listener);
void scheduler_remove_listener(struct SchedulerListener* listener);
void scheduler_init(void);
status_t _user_analyze_scheduling(bigtime_t from, bigtime_t until, void* buffer,
size_t size, struct scheduling_analysis* analysis);
#ifdef __cplusplus
}
#endif
#endif /* KERNEL_SCHEDULER_H */