227fe7d34a
- Moved scheduler listening interface to <listeners.h> and added more
convenient to use templatized notification functions.
- Added a listener mechanism for the wait objects (semaphores, condition
variables, mutex, rw_lock).
* system profiler:
- Hopefully fixed locking issues related to notifying the profiler thread
for good. We still had an inconsistent locking order, since the scheduler
notification callbacks are invoked with the thread lock held and have to
acquire the object lock then, while the other callbacks acquired the object
lock first and as a side effect of ConditionVariable::NotifyOne() acquired
the thread lock. Now we make sure the object lock is the innermost lock.
- Track the number of dropped events due to a full buffer.
_user_system_profiler_next_buffer() returns this count now.
- When scheduling profiling events are requested also listen to wait objects
and generate the respective profiling events. We send those events lazily
and cache the infos to avoid resending an event for the same wait object.
- When starting profiling we do now generate "thread scheduled" events for
the already running threads.
- _user_system_profiler_start(): Check whether the parameters pointer is a
userland address at all.
- The system_profiler_team_added event does now also contain the team's name.
* Added a sem_get_name_unsafe() returning a semaphore's name. It is "unsafe",
since the caller has to ensure that the semaphore exists and continues to
exist as long as the returned name is used.
* Adjusted the "profile" and "scheduling_recorder" according to the system
profiling changes. The latter prints the number of dropped events, now.
git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30345 a95241bf-73f2-0310-859d-f6bbb57e9c96
69 lines
2.1 KiB
C
69 lines
2.1 KiB
C
/*
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* Copyright 2008-2009, Ingo Weinhold, ingo_weinhold@gmx.de.
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* Copyright 2005, Axel Dörfler, axeld@pinc-software.de.
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* Distributed under the terms of the MIT License.
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*/
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#ifndef KERNEL_SCHEDULER_H
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#define KERNEL_SCHEDULER_H
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#include <SupportDefs.h>
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struct scheduling_analysis;
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struct thread;
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struct SchedulerListener;
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struct scheduler_ops {
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void (*enqueue_in_run_queue)(struct thread* thread);
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void (*reschedule)(void);
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void (*set_thread_priority)(struct thread* thread, int32 priority);
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// called when the thread structure is first created -
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// initialization of per-thread housekeeping data structures should
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// be done here
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void (*on_thread_create)(struct thread* thread);
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// called when a thread structure is initialized and made ready for
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// use - should be used to reset the housekeeping data structures
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// if needed
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void (*on_thread_init)(struct thread* thread);
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// called when a thread structure is freed - freeing up any allocated
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// mem on the scheduler's part should be done here
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void (*on_thread_destroy)(struct thread* thread);
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void (*start)(void);
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};
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extern struct scheduler_ops* gScheduler;
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#define scheduler_enqueue_in_run_queue(thread) \
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gScheduler->enqueue_in_run_queue(thread)
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#define scheduler_set_thread_priority(thread, priority) \
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gScheduler->set_thread_priority(thread, priority)
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#define scheduler_reschedule() gScheduler->reschedule()
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#define scheduler_start() gScheduler->start()
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#define scheduler_on_thread_create(thread) \
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gScheduler->on_thread_create(thread)
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#define scheduler_on_thread_init(thread) \
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gScheduler->on_thread_init(thread)
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#define scheduler_on_thread_destroy(thread) \
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gScheduler->on_thread_destroy(thread)
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#ifdef __cplusplus
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extern "C" {
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#endif
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void scheduler_add_listener(struct SchedulerListener* listener);
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void scheduler_remove_listener(struct SchedulerListener* listener);
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void scheduler_init(void);
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status_t _user_analyze_scheduling(bigtime_t from, bigtime_t until, void* buffer,
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size_t size, struct scheduling_analysis* analysis);
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#ifdef __cplusplus
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}
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#endif
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#endif /* KERNEL_SCHEDULER_H */
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