T-Kernel Specification (1.B0.02)

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212 CHAPTER 4. T-KERNEL/OS FUNCTIONS tk evt ssy Call Event Function of Sub-System [C Language Interface] ER ercd = tk_evt_ssy ( ID ssid, INT evttyp, ID resid, INT info ) ; [Parameters] ID ssid Subsystem ID INT evttyp Event request type ID resid Resource ID INT info Any parameter [Return Parameters] ER ercd Error code [Error Codes] E OK E ID E NOEXS E CTX Other Normal completion Invalid ID number (ssid, resid is invalid or cannot be used) Object does not exist (the subsystem designated in ssid is not defined) Context error (issued from task-independent portion or in dispatch disabled state) Error code returned by the event handling function [Description] Calls the event handling function of the subsystem designated in ssid. A designation of ssid = 0 makes the system call applicable to all currently defined subsystems. In this case the event handling function of each subsystem is called in sequence. When evttyp is an odd number: Calls in order starting from the highest subsystem priority. When evttyp is an even number: Calls in order starting from the lowest subsystem priority. The order among subsystems having the same priority is not defined. If this system call is issued for a subsystem with no event handling function defined, the function is simply not called; no error results. If this system call is not invoked for any particular resource group, resid = 0 is designated. If the event handling function returns an error, the error code is passed transparently in the system call return code. When ssid = 0 and an event handler returns an error, the event handling functions of all other subsystems continue to be called. In the system call return code, only one error code is returned even if more than one event handling function returned an error. It is not possible to know which subsystem’s event handling function returned the error. If during event handling function execution a task exception is raised for the task that called tk evt ssy, the task exception is held until the event handling function completes its processing. Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
4.10. SUBSYSTEM MANAGEMENT FUNCTIONS 213 tk ref ssy Reference Subsystem Status [C Language Interface] ER ercd = tk_ref_ssy ( ID ssid, T_RSSY *pk_rssy ) ; [Parameters] ID ssid Subsystem ID T RSSY* pk rssy Subsystem definition information [Return Parameters] ER ercd Error code pk rssy detail: PRI ssypri Subsystem priority INT resblksz Resource control block size (in bytes) (Other implementation-dependent parameters may be added beyond this point.) [Error Codes] E OK E ID E NOEXS E PAR Normal completion Invalid ID number (ssid is invalid or cannot be used) Object does not exist (the subsystem designated in ssid is not defined) Parameter error (pk rssy is invalid or cannot be used) [Description] References information about the status of the subsystem designated in ssid. resblksz returns the size of the resource control block designated with tk def ssy. If the subsystem designated in ssid does not exist, E NOEXS is returned. 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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4.6. MEMORY POOL MANAGEMENT FUNCTIO
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Page 245 and 246: 5.1. SYSTEM MEMORY MANAGEMENT FUNCT
Page 247 and 248: 5.2. ADDRESS SPACE MANAGEMENT FUNCT
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Page 277 and 278: 5.7. SYSTEM CONFIGURATION INFORMATI
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Page 284 and 285: 260 CHAPTER 6. T-KERNEL/DS FUNCTION
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262 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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