Real-Time Programming Languages - Operating Systems

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Example 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 protected body Overrun is entry Stop_Task when Abandon is begin Abandon := False; First_Occurence := True; end Stop_Task; procedure Reset(C1, C2 : Time_Span) is begin Abandon := False; First_Occurence := True; WCET := C1; WCET_Overrun := C2; end Reset; procedure Handler(TM : in out Timer) is begin if First_Occurence then Set_Handler(TM,WCET_Overrun,Handler); Set_Priority(2, TM.T.all); First_Occurence := False; else Abandon := True; end if; end Handler; end Overrun; Burns, Wellings Ch. 15.5 Page 373 WS 2013/14 Real-Time Systems, Real-Time Prog. Languages / Hermann Härtig 62
Example 01 02 03 04 05 06 07 08 09 task Hard_Example; task body Hard_Example is ID : aliased Task_ID := Current_Task; WCET_Error : Timer(ID); WCET : Time_Span := Microseconds(1250); WCET_Overrun : Time_Span := Microseconds(250); Bool : Boolean := False; ... Burns, Wellings Ch. 15.5 Page 373 WS 2013/14 Real-Time Systems, Real-Time Prog. Languages / Hermann Härtig 63
Page 1 and 2:
Real-Time Systems Hermann Härtig R
Page 3 and 4:
RT Language Classes Synchronous HLL
Page 5 and 6:
Synchronous Systems → Synchronous
Page 7 and 8:
Esterel at a glance Most statements
Page 9 and 10:
Esterel „Data“: Variables and S
Page 11 and 12: Signals vs Variables 01 Emit Count(
Page 13 and 14: Examples (all by Berry): ABRO Speci
Page 15 and 16: Speed Specification SPEED: Count th
Page 17 and 18: Few general points Ada has “Annex
Page 19 and 20: Concurrency Tasks ● ● ● ● a
Page 21 and 22: Termination of Tasks Every task has
Page 23 and 24: The Rendezvous Based on client/serv
Page 25 and 26: In detail task executing Server Cli
Page 27 and 28: Select Statement ● ● Arbitrary
Page 29 and 30: Example: Resource with Locking 01 0
Page 31 and 32: Tasks ./. Protected Objects 01 02 0
Page 33 and 34: Fixed Priorities ● task (type) T
Page 35 and 36: Active Priority Base priority or
Page 37 and 38: EDF Dispatching How to set deadline
Page 39 and 40: Mixed Scheduling Policies, example
Page 41 and 42: Explicit Request Ordering: Requeue
Page 43 and 44: Timing events 01 02 03 04 05 06 07
Page 45 and 46: Example: Watchdog 01 02 03 04 05 06
Page 47 and 48: Time: Delay Statement 01 02 03 04 0
Page 49 and 50: Delay and Select, client side(1) 01
Page 51 and 52: Example 01 02 03 04 05 06 07 select
Page 53 and 54: Example: Operator/Subscriber 01 02
Page 55 and 56: Example: Operator/Subscriber 01 02
Page 57 and 58: Recurrent Tasks (1) 01 02 03 04 05
Page 59 and 60: Recurrent Tasks (3) Periodic tasks
Page 61: Example 01 02 03 04 05 06 07 08 09
Page 65 and 66: Missing in this RT-HLL lecture ●
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Real-Time Programming Languages - Operating Systems

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