T-Kernel Specification (1.B0.02)

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278 CHAPTER 6. T-KERNEL/DS FUNCTIONS td hoc dsp Define Task Dispatch Hook Routine [C Language Interface] ER ercd = td_hok_dsp ( TD_HDSP *hdsp ) ; [Parameters] TD HDSP hdsp Hook routine definition information hdsp detail: FP exec Hook routine when execution starts FP stop Hook routine when execution stops [Return Parameters] ER ercd Error code [Description] Sets hook routines in the task dispatcher. A hook routine is canceled by setting NULL in hdsp. The hook routines are called in dispatch disabled state. The hook routines must not invoke T-Kernel/OS system calls (tk_—) or extended SVC. T-Kernel/DS service calls (td_—) may be invoked. void exec( ID tskid, INT lsid ) tskid Task ID of the started or resumed task lsid Logical ID of the task designated in tskid This is called when the designated task starts execution or resumes. At the time exec() is called, the task designated in tskid is already in RUN state and logical space has been switched. However, execution of the tskid task program code occurs after the return from exec(). void stop( ID tskid, INT lsid, UINT tskstat ) tskid Task ID of the executed or stopped task lsid Logical ID of the task designated in tskid tskstat State of the task designated in tskid This is called when the designated task executes or stops. tskstat indicates the task state after stopping, as one of the following states. TTS RDY READY state TTS WAI WAIT state TTS SUS SUSPEND state TTS WAS WAIT-SUSPEND state TTS DM TDORMANT state 0 NON-EXISTENT state Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
6.2. TRACE FUNCTIONS 279 At the time stop() is called, the task designated in tskid has already entered the state indicated in tskstat. The logical space is indeterminate. 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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4.1. TASK MANAGEMENT FUNCTIONS 29 #
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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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4.6. MEMORY POOL MANAGEMENT FUNCTIO
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4.7. TIME MANAGEMENT FUNCTIONS 163
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4.8. INTERRUPT MANAGEMENT FUNCTIONS
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4.9. SYSTEM MANAGEMENT FUNCTIONS 19
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4.10. SUBSYSTEM MANAGEMENT FUNCTION
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Chapter 5 T-Kernel/SM Details of th
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5.1. SYSTEM MEMORY MANAGEMENT FUNCT
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5.2. ADDRESS SPACE MANAGEMENT FUNCT
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5.2. ADDRESS SPACE MANAGEMENT FUNCT
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