T-Kernel Specification (1.B0.02)

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192 CHAPTER 4. T-KERNEL/OS FUNCTIONS priority High ✻ ❄ Low 1 2 3 ✲ ✲ [Task B] ✲ [Task C] ✲ [Task D] [Task E] Figure 4.9: Precedence Before Issuing tk rot rdq priority High ✻ ❄ Low 1 2 3 ✲ ✲ [Task C] ✲ [Task D] ✲ [Task B] [Task E] • Task C executes next. Figure 4.10: Precedence After Issuing tk rot rdq (tskpri = 2) Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
4.9. SYSTEM MANAGEMENT FUNCTIONS 193 tk get tid Get Task Identifier [C Language Interface] ID tskid = tk_get_tid ( ) ; [Parameters] None [Return Parameters] ID tskid ID of the task in RUN state [Error Codes] None [Description] Gets the ID number of the task currently in RUN state. Unless the task-independent portion is executing, the current RUN state task will be the invoking task. If there is no task currently in RUN state, 0 is returned. [Additional Notes] The task ID returned by tk get tid is identical to runtskid returned by tk ref sys. Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
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T-Kernel Specification T-Kernel 1.B
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Contents 1 T-Kernel Overview 1 1.1
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CONTENTS v tk set flg (Set Event Fl
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CONTENTS vii 5.2.2 Address Space Ch
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CONTENTS ix td cal que (Reference Q
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List of Figures 1.1 Position of T-K
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List of Tables 2.1 State Transition
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System Call Notation In the parts o
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Index of T-Kernel/OS System Calls T
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INDEX OF T-KERNEL/OS SYSTEM CALLS x
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Index of T-Kernel/SM Extended SVC L
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Index of T-Kernel/DS System Calls T
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Chapter 1 T-Kernel Overview 1.1 Pos
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1.2. SCALABILITY 3 • Middleware m
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Chapter 2 Concepts Underlying the T
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2.2. TASK STATES AND SCHEDULING RUL
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2.2. TASK STATES AND SCHEDULING RUL
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2.3. INTERRUPT HANDLING 11 preceden
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2.5. SYSTEM STATES 13 Transient sta
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2.7. MEMORY 15 which the upper and
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Chapter 3 Common T-Kernel Specifica
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3.2. SYSTEM CALLS 19 /* * Common co
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3.2. SYSTEM CALLS 21 Ordinarily a f
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3.3. HIGH-LEVEL LANGUAGE SUPPORT RO
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Chapter 4 T-Kernel/OS Functions Thi
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4.1. TASK MANAGEMENT FUNCTIONS 27 t
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4.2. TASK-DEPENDENT SYNCHRONIZATION
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4.3. TASK EXCEPTION HANDLING FUNCTI
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4.4. SYNCHRONIZATION AND COMMUNICAT
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4.5. EXTENDED SYNCHRONIZATION AND C
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5.3. DEVICE MANAGEMENT FUNCTIONS 24
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5.4. INTERRUPT MANAGEMENT FUNCTIONS
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5.5. IO PORT ACCESS SUPPORT FUNCTIO
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5.7. SYSTEM CONFIGURATION INFORMATI
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5.7. SYSTEM CONFIGURATION INFORMATI
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5.8. SUBSYSTEM AND DEVICE DRIVER ST
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260 CHAPTER 6. T-KERNEL/DS FUNCTION
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284 CHAPTER 7. REFERENCE INT tevptn
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286 CHAPTER 7. REFERENCE ER ercd =
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288 CHAPTER 7. REFERENCE INT ct = t
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290 CHAPTER 7. REFERENCE E OACV ERC
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T-Kernel Specification (1.B0.02)

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