T-Kernel Specification (1.B0.02)

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162 CHAPTER 4. T-KERNEL/OS FUNCTIONS tk ref mpl Reference Variable-size Memory Pool Status [C Language Interface] ER ercd = tk_ref_mpl ( ID mplid, T_RMPL *pk_rmpl ) ; [Parameters] ID mplid Variable-size memory pool ID T RMPL* pk rmpl Address of packet for returning status information [Return Parameters] ER ercd Error code pk rmpl detail: VP exinf Extended information ID wtsk Waiting task information INT frsz Free memory size (in bytes) INT maxsz Maximum memory space 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 (mplid is invalid or cannot be used) Object does not exist (the variable-size memory pool designated in mplid does not exist) Parameter error (the return parameter packet address cannot be used) [Description] References the status of the variable-size memory pool designated in mplid, passing in return parameters the total size of free space frsz, the maximum size of memory immediately available maxsz, waiting task information (wtsk), and extended information (exinf). wtsk indicates the ID of a task waiting for memory block allocation from this variable-size memory pool. If multiple tasks are waiting for the variable-size memory pool, the ID of the task at the head of the queue is returned. If there are no waiting tasks, wtsk = 0 is returned. If the variable-size memory pool designated with tk ref mpl does not exist, error code E NOEXS is returned. Copyright c○ 2002, 2003 by T-Engine Forum T-Kernel 1.B0.02
4.7. TIME MANAGEMENT FUNCTIONS 163 4.7 Time Management Functions Time management functions are for performing time-dependent processing. They include functions for system time management, cyclic handlers, and alarm handlers. The general name used here for cyclic handlers and alarm handlers is time event handlers. 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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4.5. EXTENDED SYNCHRONIZATION AND C
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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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5.3. DEVICE MANAGEMENT FUNCTIONS 22
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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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