T-Kernel Specification (1.B0.02)

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216 CHAPTER 4. T-KERNEL/OS FUNCTIONS tk del res Delete Resource Group [C Language Interface] ER ercd = tk_del_res ( ID resid ) ; [Parameters] ID resid Resource ID [Return Parameters] ER ercd Error code [Error Codes] E OK E ID E NOEXS Normal completion Invalid ID number (resid is invalid or cannot be used) Object does not exist (the resource designated in resid does not exist) [Description] Deletes the resource control blocks of the resource group designated in resid, and releases the resource ID. The resource control blocks of all subsystems are deleted. [Additional Notes] Resources are deleted even if there are still tasks belonging to a resource to be deleted. In principle, resource deletion must be performed after exit and deletion of all tasks belonging to the resources. The behavior is not guaranteed if a resource is deleted while a task belonging to that resource remains and is calling a subsystem (extended SVC). Likewise, the behavior is not guaranteed if a task belonging to a deleted resource calls a subsystem (extended SVC). The timing for actual resource control block deletion is implementation-dependent. (See tk cre res.) The system resource group cannot be deleted (error code E ID is returned). Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
4.10. SUBSYSTEM MANAGEMENT FUNCTIONS 217 tk get res Get Resource Management Block [C Language Interface] ER ercd = tk_get_res ( ID resid, ID ssid, VP *p_resblk ) ; [Parameters] ID resid Resource ID ID ssid Subsystem ID [Return Parameters] VP resblk Resource control block ER ercd Error code [Error Codes] E OK E ID E NOEXS E PAR Normal completion Invalid ID number (resid or ssid is invalid or cannot be used) Object does not exist (the resource designated in resid or ssid does not exist) Parameter error (value that cannot be used in p resblk) [Description] Gets the address of the resource control block of resource group resid for subsystem ssid. [Additional Notes] E OK might be returned even if this system call is issued for a deleted resource ID. Whether or not error (E NOEXS) is returned in this case is implementation-dependent. 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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4.7. TIME MANAGEMENT FUNCTIONS 163
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266 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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