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New scheduler and interruptible blocking.

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A new scheduler replaces the old one.
  - There are no sched_xxx_notify() calls that ask scheduler to change task state.
  - Tasks now have priorities and different timeslices.
  - One second interval is distributed among processes.
  - There are just runnable and expired queues.
  - SCHED_GRANULARITY determines a maximum running boundary for tasks.
  - Scheduler can now detect a safe point and suspend a task.

Interruptible blocking is implemented.
  - Mutexes, waitqueues and ipc are modified to have an interruptible nature.
  - Sleep information is stored on the ktcb. (which waitqueue? etc.)
This commit is contained in:
Bahadir Balban
2008-10-01 12:43:44 +03:00
parent c54d505709
commit f6d0a79298
21 changed files with 681 additions and 429 deletions
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3
include/l4/generic/preempt.h
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@@ -9,4 +9,7 @@ void preempt_disable(void);
int preemptive(void);
int preempt_count(void);
int in_nested_irq_context(void);
int in_irq_context(void);
int in_task_context(void);
#endif /* __PREEMPT_H__ */