101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
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#ifndef YAKK_H
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#define YAKK_H
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#include "yaku.h"
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#define null 0
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#define IDLETASKSTACKSIZE 512
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//Error Codes
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#define NEW_TASK_FAILED 1
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#define READY_QUEUE_EMPTY 2
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#define NEW_SEM_FAILED 3
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#define NEW_QUEUE_FAILED 4
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//Kernel Data Structures
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enum TaskState {T_BLOCKED, T_READY, T_RUNNING};
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enum KernelState {K_BLOCKED, K_RUNNING};
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typedef struct TCB {
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unsigned int tid;
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unsigned char priority;
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void* stackPointer;
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enum TaskState state;
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unsigned int delayCount;
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struct TCB* next;
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struct TCB* prev;
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} TCB;
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typedef struct TaskBlock {
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TCB TCBPool[MAX_TASKS+1];
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unsigned int nextFreeTCB;
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} TaskBlock;
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typedef struct PriorityQueue {
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TCB* head;
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TCB* tail;
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unsigned int size;
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} PriorityQueue;
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typedef struct DelayQueue {
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TCB* head;
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unsigned int size;
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} DelayQueue;
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typedef struct Semaphore {
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int value;
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PriorityQueue queue;
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} YKSEM;
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typedef struct SemBlock {
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YKSEM SemPool[MAX_SEMS];
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unsigned int nextFreeSem;
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} SemBlock;
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typedef struct MessageQueue {
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void** messages;
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unsigned int currentSize;
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unsigned int maxSize;
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PriorityQueue queue;
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} YKQ;
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typedef struct MessageQueueBlock {
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YKQ QueuePool[MAX_QUEUES];
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unsigned int nextFreeQueue;
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} MsgQueueBlock;
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//Kernel API
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void YKInitialize(void);
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void YKEnterMutex(void);
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void YKExitMutex(void);
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void YKIdleTask(void);
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void YKNewTask(void (* task) (void), void *taskStack, unsigned char priority);
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void YKDelayTask(unsigned count);
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void YKEnterISR(void);
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void YKExitISR(void);
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unsigned int YKGetISRCallDepth(void);
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void YKScheduler(void);
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void YKDispatcher(TCB* readyTask);
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void YKTickHandler(void);
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YKSEM* YKSemCreate(int initialValue);
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void YKSemPend(YKSEM* semaphore);
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void YKSemPost(YKSEM* semaphore);
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YKQ* YKQCreate(void** start, unsigned size);
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void* YKQPend(YKQ* queue);
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int YKQPost(YKQ* queue, void* msg);
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//YKEVENT* YKEventCreate(unsigned initialValue);
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//void YKEventSet(YKEVENT* event, unsigned eventMask);
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//void YKEVentReset(YKEVENT* event, unsigned eventMask);
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TCB* getNewTCB(void);
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YKSEM* getNewSem(void);
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YKQ* getNewQueue(void);
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void YKRun(void);
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unsigned int getYKCtxSwCount();
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unsigned int getYKIdelCount();
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void setYKIdelCount(int value);
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void setYKCtxSwCount(int value);
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unsigned int getYKTickNum();
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#endif
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